diff options
| author | Russ Cox <rsc@golang.org> | 2014-11-20 11:30:43 -0500 |
|---|---|---|
| committer | Russ Cox <rsc@golang.org> | 2014-11-20 11:30:43 -0500 |
| commit | 1ac4b754e58ba42944de03808fb96210b065e4c4 (patch) | |
| tree | 7e903d8afe4ac7dc3f7a19cce1765d48d44ec5aa /src/cmd | |
| parent | 76fd55b06c1f4f9d5b5981810d4a723f4bf9952e (diff) | |
| parent | 4556dad5c76734a7966c6d0c23f9dec4de7196a6 (diff) | |
| download | go-1ac4b754e58ba42944de03808fb96210b065e4c4.tar.gz | |
[dev.cc] all: merge dev.power64 (f57928630b36) into dev.cc
This will be the last dev.power64 merge; we'll finish on dev.cc.
TBR=austin
CC=golang-codereviews
https://codereview.appspot.com/175420043
Diffstat (limited to 'src/cmd')
100 files changed, 806 insertions, 50497 deletions
diff --git a/src/cmd/5c/Makefile b/src/cmd/5c/Makefile deleted file mode 100644 index 3f528d751..000000000 --- a/src/cmd/5c/Makefile +++ /dev/null @@ -1,5 +0,0 @@ -# Copyright 2012 The Go Authors. All rights reserved. -# Use of this source code is governed by a BSD-style -# license that can be found in the LICENSE file. - -include ../../Make.dist diff --git a/src/cmd/5c/cgen.c b/src/cmd/5c/cgen.c deleted file mode 100644 index 5a049ae62..000000000 --- a/src/cmd/5c/cgen.c +++ /dev/null @@ -1,1213 +0,0 @@ -// Inferno utils/5c/cgen.c -// http://code.google.com/p/inferno-os/source/browse/utils/5c/cgen.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" -#include "../../runtime/funcdata.h" - -void -_cgen(Node *n, Node *nn, int inrel) -{ - Node *l, *r; - Prog *p1; - Node nod, nod1, nod2, nod3, nod4; - int o, t; - int32 v, curs; - - if(debug['g']) { - prtree(nn, "cgen lhs"); - prtree(n, "cgen"); - } - if(n == Z || n->type == T) - return; - if(typesuv[n->type->etype] && (n->op != OFUNC || nn != Z)) { - sugen(n, nn, n->type->width); - return; - } - l = n->left; - r = n->right; - o = n->op; - if(n->addable >= INDEXED) { - if(nn == Z) { - switch(o) { - default: - nullwarn(Z, Z); - break; - case OINDEX: - nullwarn(l, r); - break; - } - return; - } - gmove(n, nn); - return; - } - curs = cursafe; - - if(n->complex >= FNX) - if(l->complex >= FNX) - if(r != Z && r->complex >= FNX) - switch(o) { - default: - regret(&nod, r, 0, 0); - cgen(r, &nod); - - regsalloc(&nod1, r); - gopcode(OAS, &nod, Z, &nod1); - - regfree(&nod); - nod = *n; - nod.right = &nod1; - cgen(&nod, nn); - return; - - case OFUNC: - case OCOMMA: - case OANDAND: - case OOROR: - case OCOND: - case ODOT: - break; - } - - switch(o) { - default: - diag(n, "unknown op in cgen: %O", o); - break; - - case OAS: - if(l->op == OBIT) - goto bitas; - if(l->addable >= INDEXED && l->complex < FNX) { - if(nn != Z || r->addable < INDEXED) { - if(r->complex >= FNX && nn == Z) - regret(&nod, r, 0, 0); - else - regalloc(&nod, r, nn); - cgen(r, &nod); - gmove(&nod, l); - if(nn != Z) - gmove(&nod, nn); - regfree(&nod); - } else - gmove(r, l); - break; - } - if(l->complex >= r->complex) { - reglcgen(&nod1, l, Z); - if(r->addable >= INDEXED) { - gmove(r, &nod1); - if(nn != Z) - gmove(r, nn); - regfree(&nod1); - break; - } - regalloc(&nod, r, nn); - cgen(r, &nod); - } else { - regalloc(&nod, r, nn); - cgen(r, &nod); - reglcgen(&nod1, l, Z); - } - gmove(&nod, &nod1); - regfree(&nod); - regfree(&nod1); - break; - - bitas: - n = l->left; - regalloc(&nod, r, nn); - if(l->complex >= r->complex) { - reglcgen(&nod1, n, Z); - cgen(r, &nod); - } else { - cgen(r, &nod); - reglcgen(&nod1, n, Z); - } - regalloc(&nod2, n, Z); - gopcode(OAS, &nod1, Z, &nod2); - bitstore(l, &nod, &nod1, &nod2, nn); - break; - - case OBIT: - if(nn == Z) { - nullwarn(l, Z); - break; - } - bitload(n, &nod, Z, Z, nn); - gopcode(OAS, &nod, Z, nn); - regfree(&nod); - break; - - case ODIV: - case OMOD: - if(nn != Z) - if((t = vlog(r)) >= 0) { - /* signed div/mod by constant power of 2 */ - cgen(l, nn); - gopcode(OGE, nodconst(0), nn, Z); - p1 = p; - if(o == ODIV) { - gopcode(OADD, nodconst((1<<t)-1), Z, nn); - patch(p1, pc); - gopcode(OASHR, nodconst(t), Z, nn); - } else { - gopcode(OSUB, nn, nodconst(0), nn); - gopcode(OAND, nodconst((1<<t)-1), Z, nn); - gopcode(OSUB, nn, nodconst(0), nn); - gbranch(OGOTO); - patch(p1, pc); - p1 = p; - gopcode(OAND, nodconst((1<<t)-1), Z, nn); - patch(p1, pc); - } - break; - } - goto muldiv; - - case OSUB: - if(nn != Z) - if(l->op == OCONST) - if(!typefd[n->type->etype]) { - cgen(r, nn); - gopcode(o, Z, l, nn); - break; - } - case OADD: - case OAND: - case OOR: - case OXOR: - case OLSHR: - case OASHL: - case OASHR: - /* - * immediate operands - */ - if(nn != Z) - if(r->op == OCONST) - if(!typefd[n->type->etype]) { - cgen(l, nn); - if(r->vconst == 0) - if(o != OAND) - break; - if(nn != Z) - gopcode(o, r, Z, nn); - break; - } - - case OLMUL: - case OLDIV: - case OLMOD: - case OMUL: - muldiv: - if(nn == Z) { - nullwarn(l, r); - break; - } - if(o == OMUL || o == OLMUL) { - if(mulcon(n, nn)) - break; - } - if(l->complex >= r->complex) { - regalloc(&nod, l, nn); - cgen(l, &nod); - regalloc(&nod1, r, Z); - cgen(r, &nod1); - gopcode(o, &nod1, Z, &nod); - } else { - regalloc(&nod, r, nn); - cgen(r, &nod); - regalloc(&nod1, l, Z); - cgen(l, &nod1); - gopcode(o, &nod, &nod1, &nod); - } - gopcode(OAS, &nod, Z, nn); - regfree(&nod); - regfree(&nod1); - break; - - case OASLSHR: - case OASASHL: - case OASASHR: - case OASAND: - case OASADD: - case OASSUB: - case OASXOR: - case OASOR: - if(l->op == OBIT) - goto asbitop; - if(r->op == OCONST) - if(!typefd[r->type->etype]) - if(!typefd[n->type->etype]) { - if(l->addable < INDEXED) - reglcgen(&nod2, l, Z); - else - nod2 = *l; - regalloc(&nod, r, nn); - gopcode(OAS, &nod2, Z, &nod); - gopcode(o, r, Z, &nod); - gopcode(OAS, &nod, Z, &nod2); - - regfree(&nod); - if(l->addable < INDEXED) - regfree(&nod2); - break; - } - - case OASLMUL: - case OASLDIV: - case OASLMOD: - case OASMUL: - case OASDIV: - case OASMOD: - if(l->op == OBIT) - goto asbitop; - if(l->complex >= r->complex) { - if(l->addable < INDEXED) - reglcgen(&nod2, l, Z); - else - nod2 = *l; - regalloc(&nod1, r, Z); - cgen(r, &nod1); - } else { - regalloc(&nod1, r, Z); - cgen(r, &nod1); - if(l->addable < INDEXED) - reglcgen(&nod2, l, Z); - else - nod2 = *l; - } - - regalloc(&nod, n, nn); - gmove(&nod2, &nod); - gopcode(o, &nod1, Z, &nod); - gmove(&nod, &nod2); - if(nn != Z) - gopcode(OAS, &nod, Z, nn); - regfree(&nod); - regfree(&nod1); - if(l->addable < INDEXED) - regfree(&nod2); - break; - - asbitop: - regalloc(&nod4, n, nn); - if(l->complex >= r->complex) { - bitload(l, &nod, &nod1, &nod2, &nod4); - regalloc(&nod3, r, Z); - cgen(r, &nod3); - } else { - regalloc(&nod3, r, Z); - cgen(r, &nod3); - bitload(l, &nod, &nod1, &nod2, &nod4); - } - gmove(&nod, &nod4); - gopcode(o, &nod3, Z, &nod4); - regfree(&nod3); - gmove(&nod4, &nod); - regfree(&nod4); - bitstore(l, &nod, &nod1, &nod2, nn); - break; - - case OADDR: - if(nn == Z) { - nullwarn(l, Z); - break; - } - lcgen(l, nn); - break; - - case OFUNC: - if(l->complex >= FNX) { - if(l->op != OIND) - diag(n, "bad function call"); - - regret(&nod, l->left, 0, 0); - cgen(l->left, &nod); - regsalloc(&nod1, l->left); - gopcode(OAS, &nod, Z, &nod1); - regfree(&nod); - - nod = *n; - nod.left = &nod2; - nod2 = *l; - nod2.left = &nod1; - nod2.complex = 1; - cgen(&nod, nn); - - return; - } - if(REGARG >= 0) - o = reg[REGARG]; - gargs(r, &nod, &nod1); - if(l->addable < INDEXED) { - reglcgen(&nod, l, Z); - gopcode(OFUNC, Z, Z, &nod); - regfree(&nod); - } else - gopcode(OFUNC, Z, Z, l); - if(REGARG >= 0) - if(o != reg[REGARG]) - reg[REGARG]--; - regret(&nod, n, l->type, 1); - if(nn != Z) - gmove(&nod, nn); - if(nod.op == OREGISTER) - regfree(&nod); - break; - - case OIND: - if(nn == Z) { - nullwarn(l, Z); - break; - } - regialloc(&nod, n, nn); - r = l; - while(r->op == OADD) - r = r->right; - if(sconst(r) && (v = r->vconst+nod.xoffset) > -4096 && v < 4096) { - v = r->vconst; - r->vconst = 0; - cgen(l, &nod); - nod.xoffset += v; - r->vconst = v; - } else - cgen(l, &nod); - regind(&nod, n); - gopcode(OAS, &nod, Z, nn); - regfree(&nod); - break; - - case OEQ: - case ONE: - case OLE: - case OLT: - case OGE: - case OGT: - case OLO: - case OLS: - case OHI: - case OHS: - if(nn == Z) { - nullwarn(l, r); - break; - } - boolgen(n, 1, nn); - break; - - case OANDAND: - case OOROR: - boolgen(n, 1, nn); - if(nn == Z) - patch(p, pc); - break; - - case ONOT: - if(nn == Z) { - nullwarn(l, Z); - break; - } - boolgen(n, 1, nn); - break; - - case OCOMMA: - cgen(l, Z); - cgen(r, nn); - break; - - case OCAST: - if(nn == Z) { - nullwarn(l, Z); - break; - } - /* - * convert from types l->n->nn - */ - if(nocast(l->type, n->type)) { - if(nocast(n->type, nn->type)) { - cgen(l, nn); - break; - } - } - regalloc(&nod, l, nn); - cgen(l, &nod); - regalloc(&nod1, n, &nod); - if(inrel) - gmover(&nod, &nod1); - else - gopcode(OAS, &nod, Z, &nod1); - gopcode(OAS, &nod1, Z, nn); - regfree(&nod1); - regfree(&nod); - break; - - case ODOT: - sugen(l, nodrat, l->type->width); - if(nn != Z) { - warn(n, "non-interruptable temporary"); - nod = *nodrat; - if(!r || r->op != OCONST) { - diag(n, "DOT and no offset"); - break; - } - nod.xoffset += (int32)r->vconst; - nod.type = n->type; - cgen(&nod, nn); - } - break; - - case OCOND: - bcgen(l, 1); - p1 = p; - cgen(r->left, nn); - gbranch(OGOTO); - patch(p1, pc); - p1 = p; - cgen(r->right, nn); - patch(p1, pc); - break; - - case OPOSTINC: - case OPOSTDEC: - v = 1; - if(l->type->etype == TIND) - v = l->type->link->width; - if(o == OPOSTDEC) - v = -v; - if(l->op == OBIT) - goto bitinc; - if(nn == Z) - goto pre; - - if(l->addable < INDEXED) - reglcgen(&nod2, l, Z); - else - nod2 = *l; - - regalloc(&nod, l, nn); - gopcode(OAS, &nod2, Z, &nod); - regalloc(&nod1, l, Z); - if(typefd[l->type->etype]) { - regalloc(&nod3, l, Z); - if(v < 0) { - gopcode(OAS, nodfconst(-v), Z, &nod3); - gopcode(OSUB, &nod3, &nod, &nod1); - } else { - gopcode(OAS, nodfconst(v), Z, &nod3); - gopcode(OADD, &nod3, &nod, &nod1); - } - regfree(&nod3); - } else - gopcode(OADD, nodconst(v), &nod, &nod1); - gopcode(OAS, &nod1, Z, &nod2); - - regfree(&nod); - regfree(&nod1); - if(l->addable < INDEXED) - regfree(&nod2); - break; - - case OPREINC: - case OPREDEC: - v = 1; - if(l->type->etype == TIND) - v = l->type->link->width; - if(o == OPREDEC) - v = -v; - if(l->op == OBIT) - goto bitinc; - - pre: - if(l->addable < INDEXED) - reglcgen(&nod2, l, Z); - else - nod2 = *l; - - regalloc(&nod, l, nn); - gopcode(OAS, &nod2, Z, &nod); - if(typefd[l->type->etype]) { - regalloc(&nod3, l, Z); - if(v < 0) { - gopcode(OAS, nodfconst(-v), Z, &nod3); - gopcode(OSUB, &nod3, Z, &nod); - } else { - gopcode(OAS, nodfconst(v), Z, &nod3); - gopcode(OADD, &nod3, Z, &nod); - } - regfree(&nod3); - } else - gopcode(OADD, nodconst(v), Z, &nod); - gopcode(OAS, &nod, Z, &nod2); - - regfree(&nod); - if(l->addable < INDEXED) - regfree(&nod2); - break; - - bitinc: - if(nn != Z && (o == OPOSTINC || o == OPOSTDEC)) { - bitload(l, &nod, &nod1, &nod2, Z); - gopcode(OAS, &nod, Z, nn); - gopcode(OADD, nodconst(v), Z, &nod); - bitstore(l, &nod, &nod1, &nod2, Z); - break; - } - bitload(l, &nod, &nod1, &nod2, nn); - gopcode(OADD, nodconst(v), Z, &nod); - bitstore(l, &nod, &nod1, &nod2, nn); - break; - } - cursafe = curs; - return; -} - -void -cgen(Node *n, Node *nn) -{ - _cgen(n, nn, 0); -} - -void -cgenrel(Node *n, Node *nn) -{ - _cgen(n, nn, 1); -} - -void -reglcgen(Node *t, Node *n, Node *nn) -{ - Node *r; - int32 v; - - regialloc(t, n, nn); - if(n->op == OIND) { - r = n->left; - while(r->op == OADD) - r = r->right; - if(sconst(r) && (v = r->vconst+t->xoffset) > -4096 && v < 4096) { - v = r->vconst; - r->vconst = 0; - lcgen(n, t); - t->xoffset += v; - r->vconst = v; - regind(t, n); - return; - } - } else if(n->op == OINDREG) { - if((v = n->xoffset) > -4096 && v < 4096) { - n->op = OREGISTER; - cgen(n, t); - t->xoffset += v; - n->op = OINDREG; - regind(t, n); - return; - } - } - lcgen(n, t); - regind(t, n); -} - -void -reglpcgen(Node *n, Node *nn, int f) -{ - Type *t; - - t = nn->type; - nn->type = types[TLONG]; - if(f) - reglcgen(n, nn, Z); - else { - regialloc(n, nn, Z); - lcgen(nn, n); - regind(n, nn); - } - nn->type = t; -} - -void -lcgen(Node *n, Node *nn) -{ - Prog *p1; - Node nod; - - if(debug['g']) { - prtree(nn, "lcgen lhs"); - prtree(n, "lcgen"); - } - if(n == Z || n->type == T) - return; - if(nn == Z) { - nn = &nod; - regalloc(&nod, n, Z); - } - switch(n->op) { - default: - if(n->addable < INDEXED) { - diag(n, "unknown op in lcgen: %O", n->op); - break; - } - nod = *n; - nod.op = OADDR; - nod.left = n; - nod.right = Z; - nod.type = types[TIND]; - gopcode(OAS, &nod, Z, nn); - break; - - case OCOMMA: - cgen(n->left, n->left); - lcgen(n->right, nn); - break; - - case OIND: - cgen(n->left, nn); - break; - - case OCOND: - bcgen(n->left, 1); - p1 = p; - lcgen(n->right->left, nn); - gbranch(OGOTO); - patch(p1, pc); - p1 = p; - lcgen(n->right->right, nn); - patch(p1, pc); - break; - } -} - -void -bcgen(Node *n, int true) -{ - - if(n->type == T) - gbranch(OGOTO); - else - boolgen(n, true, Z); -} - -void -boolgen(Node *n, int true, Node *nn) -{ - int o; - Prog *p1, *p2; - Node *l, *r, nod, nod1; - int32 curs; - - if(debug['g']) { - prtree(nn, "boolgen lhs"); - prtree(n, "boolgen"); - } - curs = cursafe; - l = n->left; - r = n->right; - switch(n->op) { - - default: - regalloc(&nod, n, nn); - cgen(n, &nod); - o = ONE; - if(true) - o = comrel[relindex(o)]; - if(typefd[n->type->etype]) { - gopcode(o, nodfconst(0), &nod, Z); - } else - gopcode(o, nodconst(0), &nod, Z); - regfree(&nod); - goto com; - - case OCONST: - o = vconst(n); - if(!true) - o = !o; - gbranch(OGOTO); - if(o) { - p1 = p; - gbranch(OGOTO); - patch(p1, pc); - } - goto com; - - case OCOMMA: - cgen(l, Z); - boolgen(r, true, nn); - break; - - case ONOT: - boolgen(l, !true, nn); - break; - - case OCOND: - bcgen(l, 1); - p1 = p; - bcgen(r->left, true); - p2 = p; - gbranch(OGOTO); - patch(p1, pc); - p1 = p; - bcgen(r->right, !true); - patch(p2, pc); - p2 = p; - gbranch(OGOTO); - patch(p1, pc); - patch(p2, pc); - goto com; - - case OANDAND: - if(!true) - goto caseor; - - caseand: - bcgen(l, true); - p1 = p; - bcgen(r, !true); - p2 = p; - patch(p1, pc); - gbranch(OGOTO); - patch(p2, pc); - goto com; - - case OOROR: - if(!true) - goto caseand; - - caseor: - bcgen(l, !true); - p1 = p; - bcgen(r, !true); - p2 = p; - gbranch(OGOTO); - patch(p1, pc); - patch(p2, pc); - goto com; - - case OEQ: - case ONE: - case OLE: - case OLT: - case OGE: - case OGT: - case OHI: - case OHS: - case OLO: - case OLS: - o = n->op; - if(true) - o = comrel[relindex(o)]; - if(l->complex >= FNX && r->complex >= FNX) { - regret(&nod, r, 0, 0); - cgenrel(r, &nod); - regsalloc(&nod1, r); - gopcode(OAS, &nod, Z, &nod1); - regfree(&nod); - nod = *n; - nod.right = &nod1; - boolgen(&nod, true, nn); - break; - } - if(sconst(l)) { - regalloc(&nod, r, nn); - cgenrel(r, &nod); - o = invrel[relindex(o)]; - gopcode(o, l, &nod, Z); - regfree(&nod); - goto com; - } - if(sconst(r)) { - regalloc(&nod, l, nn); - cgenrel(l, &nod); - gopcode(o, r, &nod, Z); - regfree(&nod); - goto com; - } - if(l->complex >= r->complex) { - regalloc(&nod1, l, nn); - cgenrel(l, &nod1); - regalloc(&nod, r, Z); - cgenrel(r, &nod); - } else { - regalloc(&nod, r, nn); - cgenrel(r, &nod); - regalloc(&nod1, l, Z); - cgenrel(l, &nod1); - } - gopcode(o, &nod, &nod1, Z); - regfree(&nod); - regfree(&nod1); - - com: - if(nn != Z) { - p1 = p; - gopcode(OAS, nodconst(1), Z, nn); - gbranch(OGOTO); - p2 = p; - patch(p1, pc); - gopcode(OAS, nodconst(0), Z, nn); - patch(p2, pc); - } - break; - } - cursafe = curs; -} - -void -sugen(Node *n, Node *nn, int32 w) -{ - Prog *p1; - Node nod0, nod1, nod2, nod3, nod4, *l, *r; - Type *t; - int32 pc1; - int i, m, c; - - if(n == Z || n->type == T) - return; - if(debug['g']) { - prtree(nn, "sugen lhs"); - prtree(n, "sugen"); - } - if(nn == nodrat) - if(w > nrathole) - nrathole = w; - switch(n->op) { - case OIND: - if(nn == Z) { - nullwarn(n->left, Z); - break; - } - - default: - goto copy; - - case OCONST: - if(n->type && typev[n->type->etype]) { - if(nn == Z) { - nullwarn(n->left, Z); - break; - } - - t = nn->type; - nn->type = types[TLONG]; - reglcgen(&nod1, nn, Z); - nn->type = t; - - if(isbigendian) - gopcode(OAS, nod32const(n->vconst>>32), Z, &nod1); - else - gopcode(OAS, nod32const(n->vconst), Z, &nod1); - nod1.xoffset += SZ_LONG; - if(isbigendian) - gopcode(OAS, nod32const(n->vconst), Z, &nod1); - else - gopcode(OAS, nod32const(n->vconst>>32), Z, &nod1); - - regfree(&nod1); - break; - } - goto copy; - - case ODOT: - l = n->left; - sugen(l, nodrat, l->type->width); - if(nn != Z) { - warn(n, "non-interruptable temporary"); - nod1 = *nodrat; - r = n->right; - if(!r || r->op != OCONST) { - diag(n, "DOT and no offset"); - break; - } - nod1.xoffset += (int32)r->vconst; - nod1.type = n->type; - sugen(&nod1, nn, w); - } - break; - - case OSTRUCT: - /* - * rewrite so lhs has no side effect. - */ - if(nn != Z && side(nn)) { - nod1 = *n; - nod1.type = typ(TIND, n->type); - regret(&nod2, &nod1, 0, 0); - lcgen(nn, &nod2); - regsalloc(&nod0, &nod1); - gopcode(OAS, &nod2, Z, &nod0); - regfree(&nod2); - - nod1 = *n; - nod1.op = OIND; - nod1.left = &nod0; - nod1.right = Z; - nod1.complex = 1; - - sugen(n, &nod1, w); - return; - } - - r = n->left; - for(t = n->type->link; t != T; t = t->down) { - l = r; - if(r->op == OLIST) { - l = r->left; - r = r->right; - } - if(nn == Z) { - cgen(l, nn); - continue; - } - /* - * hand craft *(&nn + o) = l - */ - nod0 = znode; - nod0.op = OAS; - nod0.type = t; - nod0.left = &nod1; - nod0.right = l; - - nod1 = znode; - nod1.op = OIND; - nod1.type = t; - nod1.left = &nod2; - - nod2 = znode; - nod2.op = OADD; - nod2.type = typ(TIND, t); - nod2.left = &nod3; - nod2.right = &nod4; - - nod3 = znode; - nod3.op = OADDR; - nod3.type = nod2.type; - nod3.left = nn; - - nod4 = znode; - nod4.op = OCONST; - nod4.type = nod2.type; - nod4.vconst = t->offset; - - ccom(&nod0); - acom(&nod0); - xcom(&nod0); - nod0.addable = 0; - - cgen(&nod0, Z); - } - break; - - case OAS: - if(nn == Z) { - if(n->addable < INDEXED) - sugen(n->right, n->left, w); - break; - } - sugen(n->right, nodrat, w); - warn(n, "non-interruptable temporary"); - sugen(nodrat, n->left, w); - sugen(nodrat, nn, w); - break; - - case OFUNC: - if(!hasdotdotdot(n->left->type)) { - cgen(n, Z); - if(nn != Z) { - curarg -= n->type->width; - regret(&nod1, n, n->left->type, 1); - if(nn->complex >= FNX) { - regsalloc(&nod2, n); - cgen(&nod1, &nod2); - nod1 = nod2; - } - cgen(&nod1, nn); - } - break; - } - if(nn == Z) { - sugen(n, nodrat, w); - break; - } - if(nn->op != OIND) { - nn = new1(OADDR, nn, Z); - nn->type = types[TIND]; - nn->addable = 0; - } else - nn = nn->left; - n = new(OFUNC, n->left, new(OLIST, nn, n->right)); - n->type = types[TVOID]; - n->left->type = types[TVOID]; - cgen(n, Z); - break; - - case OCOND: - bcgen(n->left, 1); - p1 = p; - sugen(n->right->left, nn, w); - gbranch(OGOTO); - patch(p1, pc); - p1 = p; - sugen(n->right->right, nn, w); - patch(p1, pc); - break; - - case OCOMMA: - cgen(n->left, Z); - sugen(n->right, nn, w); - break; - } - return; - -copy: - if(nn == Z) - return; - if(n->complex >= FNX && nn->complex >= FNX) { - t = nn->type; - nn->type = types[TLONG]; - regialloc(&nod1, nn, Z); - lcgen(nn, &nod1); - regsalloc(&nod2, nn); - nn->type = t; - - gopcode(OAS, &nod1, Z, &nod2); - regfree(&nod1); - - nod2.type = typ(TIND, t); - - nod1 = nod2; - nod1.op = OIND; - nod1.left = &nod2; - nod1.right = Z; - nod1.complex = 1; - nod1.type = t; - - sugen(n, &nod1, w); - return; - } - - w /= SZ_LONG; - if(w <= 2) { - if(n->complex > nn->complex) { - reglpcgen(&nod1, n, 1); - reglpcgen(&nod2, nn, 1); - } else { - reglpcgen(&nod2, nn, 1); - reglpcgen(&nod1, n, 1); - } - regalloc(&nod3, ®node, Z); - regalloc(&nod4, ®node, Z); - nod0 = *nodconst((1<<nod3.reg)|(1<<nod4.reg)); - if(w == 2 && nod1.xoffset == 0) - gmovm(&nod1, &nod0, 0); - else { - gmove(&nod1, &nod3); - if(w == 2) { - nod1.xoffset += SZ_LONG; - gmove(&nod1, &nod4); - } - } - if(w == 2 && nod2.xoffset == 0) - gmovm(&nod0, &nod2, 0); - else { - gmove(&nod3, &nod2); - if(w == 2) { - nod2.xoffset += SZ_LONG; - gmove(&nod4, &nod2); - } - } - regfree(&nod1); - regfree(&nod2); - regfree(&nod3); - regfree(&nod4); - return; - } - - if(n->complex > nn->complex) { - reglpcgen(&nod1, n, 0); - reglpcgen(&nod2, nn, 0); - } else { - reglpcgen(&nod2, nn, 0); - reglpcgen(&nod1, n, 0); - } - - m = 0; - for(c = 0; c < w && c < 4; c++) { - i = tmpreg(); - if (i == 0) - break; - reg[i]++; - m |= 1<<i; - } - nod4 = *(nodconst(m)); - if(w < 3*c) { - for (; w>c; w-=c) { - gmovm(&nod1, &nod4, 1); - gmovm(&nod4, &nod2, 1); - } - goto out; - } - - regalloc(&nod3, ®node, Z); - gopcode(OAS, nodconst(w/c), Z, &nod3); - w %= c; - - pc1 = pc; - gmovm(&nod1, &nod4, 1); - gmovm(&nod4, &nod2, 1); - - gopcode(OSUB, nodconst(1), Z, &nod3); - gopcode(OEQ, nodconst(0), &nod3, Z); - p->as = ABGT; - patch(p, pc1); - regfree(&nod3); - -out: - if (w) { - i = 0; - while (c>w) { - while ((m&(1<<i)) == 0) - i++; - m &= ~(1<<i); - reg[i] = 0; - c--; - i++; - } - nod4.vconst = m; - gmovm(&nod1, &nod4, 0); - gmovm(&nod4, &nod2, 0); - } - i = 0; - do { - while ((m&(1<<i)) == 0) - i++; - reg[i] = 0; - c--; - i++; - } while (c>0); - regfree(&nod1); - regfree(&nod2); -} diff --git a/src/cmd/5c/doc.go b/src/cmd/5c/doc.go deleted file mode 100644 index 7291d45f4..000000000 --- a/src/cmd/5c/doc.go +++ /dev/null @@ -1,16 +0,0 @@ -// Copyright 2009 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build ignore - -/* - -5c is a version of the Plan 9 C compiler. The original is documented at - - http://plan9.bell-labs.com/magic/man2html/1/8c - -Its target architecture is the ARM, referred to by these tools as arm. - -*/ -package main diff --git a/src/cmd/5c/gc.h b/src/cmd/5c/gc.h deleted file mode 100644 index 7417b7dbe..000000000 --- a/src/cmd/5c/gc.h +++ /dev/null @@ -1,333 +0,0 @@ -// Inferno utils/5c/gc.h -// http://code.google.com/p/inferno-os/source/browse/utils/5c/gc.h -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <u.h> -#include "../cc/cc.h" -#include "../5l/5.out.h" - -/* - * 5c/arm - * Arm 7500 - */ -#define SZ_CHAR 1 -#define SZ_SHORT 2 -#define SZ_INT 4 -#define SZ_LONG 4 -#define SZ_IND 4 -#define SZ_FLOAT 4 -#define SZ_VLONG 8 -#define SZ_DOUBLE 8 -#define FNX 100 - -typedef struct Case Case; -typedef struct C1 C1; -typedef struct Multab Multab; -typedef struct Hintab Hintab; -typedef struct Reg Reg; -typedef struct Rgn Rgn; - - -#define R0ISZERO 0 - -#define A ((Addr*)0) - -#define INDEXED 9 -#define P ((Prog*)0) - -struct Case -{ - Case* link; - int32 val; - int32 label; - char def; - char isv; -}; -#define C ((Case*)0) - -struct C1 -{ - int32 val; - int32 label; -}; - -struct Multab -{ - int32 val; - char code[20]; -}; - -struct Hintab -{ - ushort val; - char hint[10]; -}; - -struct Reg -{ - int32 pc; - int32 rpo; /* reverse post ordering */ - - Bits set; - Bits use1; - Bits use2; - - Bits refbehind; - Bits refahead; - Bits calbehind; - Bits calahead; - Bits regdiff; - Bits act; - - int32 regu; - int32 loop; /* could be shorter */ - - - Reg* log5; - int32 active; - - Reg* p1; - Reg* p2; - Reg* p2link; - Reg* s1; - Reg* s2; - Reg* link; - Prog* prog; -}; -#define R ((Reg*)0) - -#define NRGN 600 -struct Rgn -{ - Reg* enter; - short cost; - short varno; - short regno; -}; - -EXTERN int32 breakpc; -EXTERN int32 nbreak; -EXTERN Case* cases; -EXTERN Node constnode; -EXTERN Node fconstnode; -EXTERN int32 continpc; -EXTERN int32 curarg; -EXTERN int32 cursafe; -EXTERN int32 isbigendian; -EXTERN Prog* lastp; -EXTERN int32 maxargsafe; -EXTERN int mnstring; -EXTERN Multab multab[20]; -extern int hintabsize; -EXTERN Node* nodrat; -EXTERN Node* nodret; -EXTERN Node* nodsafe; -EXTERN int32 nrathole; -EXTERN int32 nstring; -EXTERN Prog* p; -EXTERN int32 pc; -EXTERN Node regnode; -EXTERN char string[NSNAME]; -EXTERN Sym* symrathole; -EXTERN Node znode; -EXTERN Prog zprog; -EXTERN char reg[NREG+NFREG]; -EXTERN int32 exregoffset; -EXTERN int32 exfregoffset; -EXTERN int suppress; - -#define BLOAD(r) band(bnot(r->refbehind), r->refahead) -#define BSTORE(r) band(bnot(r->calbehind), r->calahead) -#define LOAD(r) (~r->refbehind.b[z] & r->refahead.b[z]) -#define STORE(r) (~r->calbehind.b[z] & r->calahead.b[z]) - -#define bset(a,n) ((a).b[(n)/32]&(1L<<(n)%32)) - -#define CLOAD 4 -#define CREF 5 -#define CINF 1000 -#define LOOP 3 - -EXTERN Rgn region[NRGN]; -EXTERN Rgn* rgp; -EXTERN int nregion; -EXTERN int nvar; - -EXTERN Bits externs; -EXTERN Bits params; -EXTERN Bits consts; -EXTERN Bits addrs; - -EXTERN int32 regbits; -EXTERN int32 exregbits; - -EXTERN int change; - -EXTERN Reg* firstr; -EXTERN Reg* lastr; -EXTERN Reg zreg; -EXTERN Reg* freer; -EXTERN int32* idom; -EXTERN Reg** rpo2r; -EXTERN int32 maxnr; - -extern char* anames[]; -extern Hintab hintab[]; - -/* - * sgen.c - */ -void codgen(Node*, Node*); -void gen(Node*); -void noretval(int); -void usedset(Node*, int); -void xcom(Node*); -int bcomplex(Node*, Node*); -Prog* gtext(Sym*, int32); -vlong argsize(int); - -/* - * cgen.c - */ -void cgen(Node*, Node*); -void reglcgen(Node*, Node*, Node*); -void lcgen(Node*, Node*); -void bcgen(Node*, int); -void boolgen(Node*, int, Node*); -void sugen(Node*, Node*, int32); -void layout(Node*, Node*, int, int, Node*); -void cgenrel(Node*, Node*); - -/* - * txt.c - */ -void ginit(void); -void gclean(void); -void nextpc(void); -void gargs(Node*, Node*, Node*); -void garg1(Node*, Node*, Node*, int, Node**); -Node* nodconst(int32); -Node* nod32const(vlong); -Node* nodfconst(double); -void nodreg(Node*, Node*, int); -void regret(Node*, Node*, Type*, int); -int tmpreg(void); -void regalloc(Node*, Node*, Node*); -void regfree(Node*); -void regialloc(Node*, Node*, Node*); -void regsalloc(Node*, Node*); -void regaalloc1(Node*, Node*); -void regaalloc(Node*, Node*); -void regind(Node*, Node*); -void gprep(Node*, Node*); -void raddr(Node*, Prog*); -void naddr(Node*, Addr*); -void gmovm(Node*, Node*, int); -void gmove(Node*, Node*); -void gmover(Node*, Node*); -void gins(int a, Node*, Node*); -void gopcode(int, Node*, Node*, Node*); -int samaddr(Node*, Node*); -void gbranch(int); -void patch(Prog*, int32); -int sconst(Node*); -int sval(int32); -void gpseudo(int, Sym*, Node*); -void gprefetch(Node*); -void gpcdata(int, int); - -/* - * swt.c - */ -int swcmp(const void*, const void*); -void doswit(Node*); -void swit1(C1*, int, int32, Node*); -void swit2(C1*, int, int32, Node*); -void newcase(void); -void bitload(Node*, Node*, Node*, Node*, Node*); -void bitstore(Node*, Node*, Node*, Node*, Node*); -int mulcon(Node*, Node*); -Multab* mulcon0(int32); -void nullwarn(Node*, Node*); -void outcode(void); - -/* - * list - */ -void listinit(void); - -/* - * reg.c - */ -Reg* rega(void); -int rcmp(const void*, const void*); -void regopt(Prog*); -void addmove(Reg*, int, int, int); -Bits mkvar(Addr*, int); -void prop(Reg*, Bits, Bits); -void loopit(Reg*, int32); -void synch(Reg*, Bits); -uint32 allreg(uint32, Rgn*); -void paint1(Reg*, int); -uint32 paint2(Reg*, int); -void paint3(Reg*, int, int32, int); -void addreg(Addr*, int); - -/* - * peep.c - */ -void peep(void); -void excise(Reg*); -Reg* uniqp(Reg*); -Reg* uniqs(Reg*); -int regtyp(Addr*); -int regzer(Addr*); -int anyvar(Addr*); -int subprop(Reg*); -int copyprop(Reg*); -int shiftprop(Reg*); -void constprop(Addr*, Addr*, Reg*); -int copy1(Addr*, Addr*, Reg*, int); -int copyu(Prog*, Addr*, Addr*); - -int copyas(Addr*, Addr*); -int copyau(Addr*, Addr*); -int copyau1(Prog*, Addr*); -int copysub(Addr*, Addr*, Addr*, int); -int copysub1(Prog*, Addr*, Addr*, int); - -int32 RtoB(int); -int32 FtoB(int); -int BtoR(int32); -int BtoF(int32); - -void predicate(void); -int isbranch(Prog *); -int predicable(Prog *p); -int modifiescpsr(Prog *p); diff --git a/src/cmd/5c/list.c b/src/cmd/5c/list.c deleted file mode 100644 index 98da424de..000000000 --- a/src/cmd/5c/list.c +++ /dev/null @@ -1,39 +0,0 @@ -// Inferno utils/5c/list.c -// http://code.google.com/p/inferno-os/source/browse/utils/5c/list.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - - -#define EXTERN -#include "gc.h" - -void -listinit(void) -{ - listinit5(); -} diff --git a/src/cmd/5c/mul.c b/src/cmd/5c/mul.c deleted file mode 100644 index ff50c4845..000000000 --- a/src/cmd/5c/mul.c +++ /dev/null @@ -1,640 +0,0 @@ -// Inferno utils/5c/mul.c -// http://code.google.com/p/inferno-os/source/browse/utils/5c/mul.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - - -#include "gc.h" - -/* - * code sequences for multiply by constant. - * [a-l][0-3] - * lsl $(A-'a'),r0,r1 - * [+][0-7] - * add r0,r1,r2 - * [-][0-7] - * sub r0,r1,r2 - */ - -static int maxmulops = 3; /* max # of ops to replace mul with */ -static int multabp; -static int32 mulval; -static char* mulcp; -static int32 valmax; -static int shmax; - -static int docode(char *hp, char *cp, int r0, int r1); -static int gen1(int len); -static int gen2(int len, int32 r1); -static int gen3(int len, int32 r0, int32 r1, int flag); -enum -{ - SR1 = 1<<0, /* r1 has been shifted */ - SR0 = 1<<1, /* r0 has been shifted */ - UR1 = 1<<2, /* r1 has not been used */ - UR0 = 1<<3, /* r0 has not been used */ -}; - -Multab* -mulcon0(int32 v) -{ - int a1, a2, g; - Multab *m, *m1; - char hint[10]; - - if(v < 0) - v = -v; - - /* - * look in cache - */ - m = multab; - for(g=0; g<nelem(multab); g++) { - if(m->val == v) { - if(m->code[0] == 0) - return 0; - return m; - } - m++; - } - - /* - * select a spot in cache to overwrite - */ - multabp++; - if(multabp < 0 || multabp >= nelem(multab)) - multabp = 0; - m = multab+multabp; - m->val = v; - mulval = v; - - /* - * look in execption hint table - */ - a1 = 0; - a2 = hintabsize; - for(;;) { - if(a1 >= a2) - goto no; - g = (a2 + a1)/2; - if(v < hintab[g].val) { - a2 = g; - continue; - } - if(v > hintab[g].val) { - a1 = g+1; - continue; - } - break; - } - - if(docode(hintab[g].hint, m->code, 1, 0)) - return m; - print("multiply table failure %d\n", v); - m->code[0] = 0; - return 0; - -no: - /* - * try to search - */ - hint[0] = 0; - for(g=1; g<=maxmulops; g++) { - if(g >= maxmulops && v >= 65535) - break; - mulcp = hint+g; - *mulcp = 0; - if(gen1(g)) { - if(docode(hint, m->code, 1, 0)) - return m; - print("multiply table failure %d\n", v); - break; - } - } - - /* - * try a recur followed by a shift - */ - g = 0; - while(!(v & 1)) { - g++; - v >>= 1; - } - if(g) { - m1 = mulcon0(v); - if(m1) { - strcpy(m->code, m1->code); - sprint(strchr(m->code, 0), "%c0", g+'a'); - return m; - } - } - m->code[0] = 0; - return 0; -} - -static int -docode(char *hp, char *cp, int r0, int r1) -{ - int c, i; - - c = *hp++; - *cp = c; - cp += 2; - switch(c) { - default: - c -= 'a'; - if(c < 1 || c >= 30) - break; - for(i=0; i<4; i++) { - switch(i) { - case 0: - if(docode(hp, cp, r0<<c, r1)) - goto out; - break; - case 1: - if(docode(hp, cp, r1<<c, r1)) - goto out; - break; - case 2: - if(docode(hp, cp, r0, r0<<c)) - goto out; - break; - case 3: - if(docode(hp, cp, r0, r1<<c)) - goto out; - break; - } - } - break; - - case '+': - for(i=0; i<8; i++) { - cp[-1] = i+'0'; - switch(i) { - case 1: - if(docode(hp, cp, r0+r1, r1)) - goto out; - break; - case 5: - if(docode(hp, cp, r0, r0+r1)) - goto out; - break; - } - } - break; - - case '-': - for(i=0; i<8; i++) { - cp[-1] = i+'0'; - switch(i) { - case 1: - if(docode(hp, cp, r0-r1, r1)) - goto out; - break; - case 2: - if(docode(hp, cp, r1-r0, r1)) - goto out; - break; - case 5: - if(docode(hp, cp, r0, r0-r1)) - goto out; - break; - case 6: - if(docode(hp, cp, r0, r1-r0)) - goto out; - break; - } - } - break; - - case 0: - if(r0 == mulval) - return 1; - } - return 0; - -out: - cp[-1] = i+'0'; - return 1; -} - -static int -gen1(int len) -{ - int i; - - for(shmax=1; shmax<30; shmax++) { - valmax = 1<<shmax; - if(valmax >= mulval) - break; - } - if(mulval == 1) - return 1; - - len--; - for(i=1; i<=shmax; i++) - if(gen2(len, 1<<i)) { - *--mulcp = 'a'+i; - return 1; - } - return 0; -} - -static int -gen2(int len, int32 r1) -{ - int i; - - if(len <= 0) { - if(r1 == mulval) - return 1; - return 0; - } - - len--; - if(len == 0) - goto calcr0; - - if(gen3(len, r1, r1+1, UR1)) { - i = '+'; - goto out; - } - if(gen3(len, r1-1, r1, UR0)) { - i = '-'; - goto out; - } - if(gen3(len, 1, r1+1, UR1)) { - i = '+'; - goto out; - } - if(gen3(len, 1, r1-1, UR1)) { - i = '-'; - goto out; - } - - return 0; - -calcr0: - if(mulval == r1+1) { - i = '+'; - goto out; - } - if(mulval == r1-1) { - i = '-'; - goto out; - } - return 0; - -out: - *--mulcp = i; - return 1; -} - -static int -gen3(int len, int32 r0, int32 r1, int flag) -{ - int i, f1, f2; - int32 x; - - if(r0 <= 0 || - r0 >= r1 || - r1 > valmax) - return 0; - - len--; - if(len == 0) - goto calcr0; - - if(!(flag & UR1)) { - f1 = UR1|SR1; - for(i=1; i<=shmax; i++) { - x = r0<<i; - if(x > valmax) - break; - if(gen3(len, r0, x, f1)) { - i += 'a'; - goto out; - } - } - } - - if(!(flag & UR0)) { - f1 = UR1|SR1; - for(i=1; i<=shmax; i++) { - x = r1<<i; - if(x > valmax) - break; - if(gen3(len, r1, x, f1)) { - i += 'a'; - goto out; - } - } - } - - if(!(flag & SR1)) { - f1 = UR1|SR1|(flag&UR0); - for(i=1; i<=shmax; i++) { - x = r1<<i; - if(x > valmax) - break; - if(gen3(len, r0, x, f1)) { - i += 'a'; - goto out; - } - } - } - - if(!(flag & SR0)) { - f1 = UR0|SR0|(flag&(SR1|UR1)); - - f2 = UR1|SR1; - if(flag & UR1) - f2 |= UR0; - if(flag & SR1) - f2 |= SR0; - - for(i=1; i<=shmax; i++) { - x = r0<<i; - if(x > valmax) - break; - if(x > r1) { - if(gen3(len, r1, x, f2)) { - i += 'a'; - goto out; - } - } else - if(gen3(len, x, r1, f1)) { - i += 'a'; - goto out; - } - } - } - - x = r1+r0; - if(gen3(len, r0, x, UR1)) { - i = '+'; - goto out; - } - - if(gen3(len, r1, x, UR1)) { - i = '+'; - goto out; - } - - x = r1-r0; - if(gen3(len, x, r1, UR0)) { - i = '-'; - goto out; - } - - if(x > r0) { - if(gen3(len, r0, x, UR1)) { - i = '-'; - goto out; - } - } else - if(gen3(len, x, r0, UR0)) { - i = '-'; - goto out; - } - - return 0; - -calcr0: - f1 = flag & (UR0|UR1); - if(f1 == UR1) { - for(i=1; i<=shmax; i++) { - x = r1<<i; - if(x >= mulval) { - if(x == mulval) { - i += 'a'; - goto out; - } - break; - } - } - } - - if(mulval == r1+r0) { - i = '+'; - goto out; - } - if(mulval == r1-r0) { - i = '-'; - goto out; - } - - return 0; - -out: - *--mulcp = i; - return 1; -} - -/* - * hint table has numbers that - * the search algorithm fails on. - * <1000: - * all numbers - * <5000: - * ÷ by 5 - * <10000: - * ÷ by 50 - * <65536: - * ÷ by 250 - */ -Hintab hintab[] = -{ - 683, "b++d+e+", - 687, "b+e++e-", - 691, "b++d+e+", - 731, "b++d+e+", - 811, "b++d+i+", - 821, "b++e+e+", - 843, "b+d++e+", - 851, "b+f-+e-", - 853, "b++e+e+", - 877, "c++++g-", - 933, "b+c++g-", - 981, "c-+e-d+", - 1375, "b+c+b+h-", - 1675, "d+b++h+", - 2425, "c++f-e+", - 2675, "c+d++f-", - 2750, "b+d-b+h-", - 2775, "c-+g-e-", - 3125, "b++e+g+", - 3275, "b+c+g+e+", - 3350, "c++++i+", - 3475, "c-+e-f-", - 3525, "c-+d+g-", - 3625, "c-+e-j+", - 3675, "b+d+d+e+", - 3725, "b+d-+h+", - 3925, "b+d+f-d-", - 4275, "b+g++e+", - 4325, "b+h-+d+", - 4425, "b+b+g-j-", - 4525, "b+d-d+f+", - 4675, "c++d-g+", - 4775, "b+d+b+g-", - 4825, "c+c-+i-", - 4850, "c++++i-", - 4925, "b++e-g-", - 4975, "c+f++e-", - 5500, "b+g-c+d+", - 6700, "d+b++i+", - 9700, "d++++j-", - 11000, "b+f-c-h-", - 11750, "b+d+g+j-", - 12500, "b+c+e-k+", - 13250, "b+d+e-f+", - 13750, "b+h-c-d+", - 14250, "b+g-c+e-", - 14500, "c+f+j-d-", - 14750, "d-g--f+", - 16750, "b+e-d-n+", - 17750, "c+h-b+e+", - 18250, "d+b+h-d+", - 18750, "b+g-++f+", - 19250, "b+e+b+h+", - 19750, "b++h--f-", - 20250, "b+e-l-c+", - 20750, "c++bi+e-", - 21250, "b+i+l+c+", - 22000, "b+e+d-g-", - 22250, "b+d-h+k-", - 22750, "b+d-e-g+", - 23250, "b+c+h+e-", - 23500, "b+g-c-g-", - 23750, "b+g-b+h-", - 24250, "c++g+m-", - 24750, "b+e+e+j-", - 25000, "b++dh+g+", - 25250, "b+e+d-g-", - 25750, "b+e+b+j+", - 26250, "b+h+c+e+", - 26500, "b+h+c+g+", - 26750, "b+d+e+g-", - 27250, "b+e+e+f+", - 27500, "c-i-c-d+", - 27750, "b+bd++j+", - 28250, "d-d-++i-", - 28500, "c+c-h-e-", - 29000, "b+g-d-f+", - 29500, "c+h+++e-", - 29750, "b+g+f-c+", - 30250, "b+f-g-c+", - 33500, "c-f-d-n+", - 33750, "b+d-b+j-", - 34250, "c+e+++i+", - 35250, "e+b+d+k+", - 35500, "c+e+d-g-", - 35750, "c+i-++e+", - 36250, "b+bh-d+e+", - 36500, "c+c-h-e-", - 36750, "d+e--i+", - 37250, "b+g+g+b+", - 37500, "b+h-b+f+", - 37750, "c+be++j-", - 38500, "b+e+b+i+", - 38750, "d+i-b+d+", - 39250, "b+g-l-+d+", - 39500, "b+g-c+g-", - 39750, "b+bh-c+f-", - 40250, "b+bf+d+g-", - 40500, "b+g-c+g+", - 40750, "c+b+i-e+", - 41250, "d++bf+h+", - 41500, "b+j+c+d-", - 41750, "c+f+b+h-", - 42500, "c+h++g+", - 42750, "b+g+d-f-", - 43250, "b+l-e+d-", - 43750, "c+bd+h+f-", - 44000, "b+f+g-d-", - 44250, "b+d-g--f+", - 44500, "c+e+c+h+", - 44750, "b+e+d-h-", - 45250, "b++g+j-g+", - 45500, "c+d+e-g+", - 45750, "b+d-h-e-", - 46250, "c+bd++j+", - 46500, "b+d-c-j-", - 46750, "e-e-b+g-", - 47000, "b+c+d-j-", - 47250, "b+e+e-g-", - 47500, "b+g-c-h-", - 47750, "b+f-c+h-", - 48250, "d--h+n-", - 48500, "b+c-g+m-", - 48750, "b+e+e-g+", - 49500, "c-f+e+j-", - 49750, "c+c+g++f-", - 50000, "b+e+e+k+", - 50250, "b++i++g+", - 50500, "c+g+f-i+", - 50750, "b+e+d+k-", - 51500, "b+i+c-f+", - 51750, "b+bd+g-e-", - 52250, "b+d+g-j+", - 52500, "c+c+f+g+", - 52750, "b+c+e+i+", - 53000, "b+i+c+g+", - 53500, "c+g+g-n+", - 53750, "b+j+d-c+", - 54250, "b+d-g-j-", - 54500, "c-f+e+f+", - 54750, "b+f-+c+g+", - 55000, "b+g-d-g-", - 55250, "b+e+e+g+", - 55500, "b+cd++j+", - 55750, "b+bh-d-f-", - 56250, "c+d-b+j-", - 56500, "c+d+c+i+", - 56750, "b+e+d++h-", - 57000, "b+d+g-f+", - 57250, "b+f-m+d-", - 57750, "b+i+c+e-", - 58000, "b+e+d+h+", - 58250, "c+b+g+g+", - 58750, "d-e-j--e+", - 59000, "d-i-+e+", - 59250, "e--h-m+", - 59500, "c+c-h+f-", - 59750, "b+bh-e+i-", - 60250, "b+bh-e-e-", - 60500, "c+c-g-g-", - 60750, "b+e-l-e-", - 61250, "b+g-g-c+", - 61750, "b+g-c+g+", - 62250, "f--+c-i-", - 62750, "e+f--+g+", - 64750, "b+f+d+p-", -}; -int hintabsize = nelem(hintab); diff --git a/src/cmd/5c/peep.c b/src/cmd/5c/peep.c deleted file mode 100644 index 1de56b594..000000000 --- a/src/cmd/5c/peep.c +++ /dev/null @@ -1,1478 +0,0 @@ -// Inferno utils/5c/peep.c -// http://code.google.com/p/inferno-os/source/browse/utils/5c/peep.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - - -#include "gc.h" - -int xtramodes(Reg*, Addr*); - -void -peep(void) -{ - Reg *r, *r1, *r2; - Prog *p, *p1; - int t; -/* - * complete R structure - */ - t = 0; - for(r=firstr; r!=R; r=r1) { - r1 = r->link; - if(r1 == R) - break; - p = r->prog->link; - while(p != r1->prog) - switch(p->as) { - default: - r2 = rega(); - r->link = r2; - r2->link = r1; - - r2->prog = p; - r2->p1 = r; - r->s1 = r2; - r2->s1 = r1; - r1->p1 = r2; - - r = r2; - t++; - - case ADATA: - case AGLOBL: - case ANAME: - case ASIGNAME: - p = p->link; - } - } - -loop1: - t = 0; - for(r=firstr; r!=R; r=r->link) { - p = r->prog; - if(p->as == ASLL || p->as == ASRL || p->as == ASRA) { - /* - * elide shift into D_SHIFT operand of subsequent instruction - */ - if(shiftprop(r)) { - excise(r); - t++; - } - } - if(p->as == AMOVW || p->as == AMOVF || p->as == AMOVD) - if(regtyp(&p->to)) { - if(p->from.type == D_CONST) - constprop(&p->from, &p->to, r->s1); - else if(regtyp(&p->from)) - if(p->from.type == p->to.type) { - if(copyprop(r)) { - excise(r); - t++; - } else - if(subprop(r) && copyprop(r)) { - excise(r); - t++; - } - } - } - } - if(t) - goto loop1; - /* - * look for MOVB x,R; MOVB R,R - */ - for(r=firstr; r!=R; r=r->link) { - p = r->prog; - switch(p->as) { - default: - continue; - case AEOR: - /* - * EOR -1,x,y => MVN x,y - */ - if(p->from.type == D_CONST && p->from.offset == -1) { - p->as = AMVN; - p->from.type = D_REG; - if(p->reg != NREG) - p->from.reg = p->reg; - else - p->from.reg = p->to.reg; - p->reg = NREG; - } - continue; - case AMOVH: - case AMOVHS: - case AMOVHU: - case AMOVB: - case AMOVBS: - case AMOVBU: - if(p->to.type != D_REG) - continue; - break; - } - r1 = r->link; - if(r1 == R) - continue; - p1 = r1->prog; - if(p1->as != p->as) - continue; - if(p1->from.type != D_REG || p1->from.reg != p->to.reg) - continue; - if(p1->to.type != D_REG || p1->to.reg != p->to.reg) - continue; - excise(r1); - } - - for(r=firstr; r!=R; r=r->link) { - p = r->prog; - switch(p->as) { - case AMOVW: - case AMOVB: - case AMOVBS: - case AMOVBU: - if(p->from.type == D_OREG && p->from.offset == 0) - xtramodes(r, &p->from); - else if(p->to.type == D_OREG && p->to.offset == 0) - xtramodes(r, &p->to); - else - continue; - break; - case ACMP: - /* - * elide CMP $0,x if calculation of x can set condition codes - */ - if(p->from.type != D_CONST || p->from.offset != 0) - continue; - r2 = r->s1; - if(r2 == R) - continue; - t = r2->prog->as; - switch(t) { - default: - continue; - case ABEQ: - case ABNE: - case ABMI: - case ABPL: - break; - case ABGE: - t = ABPL; - break; - case ABLT: - t = ABMI; - break; - case ABHI: - t = ABNE; - break; - case ABLS: - t = ABEQ; - break; - } - r1 = r; - do - r1 = uniqp(r1); - while (r1 != R && r1->prog->as == ANOP); - if(r1 == R) - continue; - p1 = r1->prog; - if(p1->to.type != D_REG) - continue; - if(p1->to.reg != p->reg) - if(!(p1->as == AMOVW && p1->from.type == D_REG && p1->from.reg == p->reg)) - continue; - switch(p1->as) { - default: - continue; - case AMOVW: - if(p1->from.type != D_REG) - continue; - case AAND: - case AEOR: - case AORR: - case ABIC: - case AMVN: - case ASUB: - case ARSB: - case AADD: - case AADC: - case ASBC: - case ARSC: - break; - } - p1->scond |= C_SBIT; - r2->prog->as = t; - excise(r); - continue; - } - } - - predicate(); -} - -void -excise(Reg *r) -{ - Prog *p; - - p = r->prog; - p->as = ANOP; - p->scond = zprog.scond; - p->from = zprog.from; - p->to = zprog.to; - p->reg = zprog.reg; /**/ -} - -Reg* -uniqp(Reg *r) -{ - Reg *r1; - - r1 = r->p1; - if(r1 == R) { - r1 = r->p2; - if(r1 == R || r1->p2link != R) - return R; - } else - if(r->p2 != R) - return R; - return r1; -} - -Reg* -uniqs(Reg *r) -{ - Reg *r1; - - r1 = r->s1; - if(r1 == R) { - r1 = r->s2; - if(r1 == R) - return R; - } else - if(r->s2 != R) - return R; - return r1; -} - -int -regtyp(Addr *a) -{ - - if(a->type == D_REG) - return 1; - if(a->type == D_FREG) - return 1; - return 0; -} - -/* - * the idea is to substitute - * one register for another - * from one MOV to another - * MOV a, R0 - * ADD b, R0 / no use of R1 - * MOV R0, R1 - * would be converted to - * MOV a, R1 - * ADD b, R1 - * MOV R1, R0 - * hopefully, then the former or latter MOV - * will be eliminated by copy propagation. - */ -int -subprop(Reg *r0) -{ - Prog *p; - Addr *v1, *v2; - Reg *r; - int t; - - p = r0->prog; - v1 = &p->from; - if(!regtyp(v1)) - return 0; - v2 = &p->to; - if(!regtyp(v2)) - return 0; - for(r=uniqp(r0); r!=R; r=uniqp(r)) { - if(uniqs(r) == R) - break; - p = r->prog; - switch(p->as) { - case ABL: - return 0; - - case ACMP: - case ACMN: - case AADD: - case ASUB: - case ARSB: - case ASLL: - case ASRL: - case ASRA: - case AORR: - case AAND: - case AEOR: - case AMUL: - case ADIV: - case ADIVU: - - case ACMPF: - case ACMPD: - case AADDD: - case AADDF: - case ASUBD: - case ASUBF: - case AMULD: - case AMULF: - case ADIVD: - case ADIVF: - if(p->to.type == v1->type) - if(p->to.reg == v1->reg) { - if(p->reg == NREG) - p->reg = p->to.reg; - goto gotit; - } - break; - - case AMOVF: - case AMOVD: - case AMOVW: - if(p->to.type == v1->type) - if(p->to.reg == v1->reg) - goto gotit; - break; - - case AMOVM: - t = 1<<v2->reg; - if((p->from.type == D_CONST && (p->from.offset&t)) || - (p->to.type == D_CONST && (p->to.offset&t))) - return 0; - break; - } - if(copyau(&p->from, v2) || - copyau1(p, v2) || - copyau(&p->to, v2)) - break; - if(copysub(&p->from, v1, v2, 0) || - copysub1(p, v1, v2, 0) || - copysub(&p->to, v1, v2, 0)) - break; - } - return 0; - -gotit: - copysub(&p->to, v1, v2, 1); - if(debug['P']) { - print("gotit: %D->%D\n%P", v1, v2, r->prog); - if(p->from.type == v2->type) - print(" excise"); - print("\n"); - } - for(r=uniqs(r); r!=r0; r=uniqs(r)) { - p = r->prog; - copysub(&p->from, v1, v2, 1); - copysub1(p, v1, v2, 1); - copysub(&p->to, v1, v2, 1); - if(debug['P']) - print("%P\n", r->prog); - } - t = v1->reg; - v1->reg = v2->reg; - v2->reg = t; - if(debug['P']) - print("%P last\n", r->prog); - return 1; -} - -/* - * The idea is to remove redundant copies. - * v1->v2 F=0 - * (use v2 s/v2/v1/)* - * set v1 F=1 - * use v2 return fail - * ----------------- - * v1->v2 F=0 - * (use v2 s/v2/v1/)* - * set v1 F=1 - * set v2 return success - */ -int -copyprop(Reg *r0) -{ - Prog *p; - Addr *v1, *v2; - Reg *r; - - p = r0->prog; - v1 = &p->from; - v2 = &p->to; - if(copyas(v1, v2)) - return 1; - for(r=firstr; r!=R; r=r->link) - r->active = 0; - return copy1(v1, v2, r0->s1, 0); -} - -int -copy1(Addr *v1, Addr *v2, Reg *r, int f) -{ - int t; - Prog *p; - - if(r->active) { - if(debug['P']) - print("act set; return 1\n"); - return 1; - } - r->active = 1; - if(debug['P']) - print("copy %D->%D f=%d\n", v1, v2, f); - for(; r != R; r = r->s1) { - p = r->prog; - if(debug['P']) - print("%P", p); - if(!f && uniqp(r) == R) { - f = 1; - if(debug['P']) - print("; merge; f=%d", f); - } - t = copyu(p, v2, A); - switch(t) { - case 2: /* rar, can't split */ - if(debug['P']) - print("; %Drar; return 0\n", v2); - return 0; - - case 3: /* set */ - if(debug['P']) - print("; %Dset; return 1\n", v2); - return 1; - - case 1: /* used, substitute */ - case 4: /* use and set */ - if(f) { - if(!debug['P']) - return 0; - if(t == 4) - print("; %Dused+set and f=%d; return 0\n", v2, f); - else - print("; %Dused and f=%d; return 0\n", v2, f); - return 0; - } - if(copyu(p, v2, v1)) { - if(debug['P']) - print("; sub fail; return 0\n"); - return 0; - } - if(debug['P']) - print("; sub%D/%D", v2, v1); - if(t == 4) { - if(debug['P']) - print("; %Dused+set; return 1\n", v2); - return 1; - } - break; - } - if(!f) { - t = copyu(p, v1, A); - if(!f && (t == 2 || t == 3 || t == 4)) { - f = 1; - if(debug['P']) - print("; %Dset and !f; f=%d", v1, f); - } - } - if(debug['P']) - print("\n"); - if(r->s2) - if(!copy1(v1, v2, r->s2, f)) - return 0; - } - return 1; -} - -/* - * The idea is to remove redundant constants. - * $c1->v1 - * ($c1->v2 s/$c1/v1)* - * set v1 return - * The v1->v2 should be eliminated by copy propagation. - */ -void -constprop(Addr *c1, Addr *v1, Reg *r) -{ - Prog *p; - - if(debug['C']) - print("constprop %D->%D\n", c1, v1); - for(; r != R; r = r->s1) { - p = r->prog; - if(debug['C']) - print("%P", p); - if(uniqp(r) == R) { - if(debug['C']) - print("; merge; return\n"); - return; - } - if(p->as == AMOVW && copyas(&p->from, c1)) { - if(debug['C']) - print("; sub%D/%D", &p->from, v1); - p->from = *v1; - } else if(copyu(p, v1, A) > 1) { - if(debug['C']) - print("; %Dset; return\n", v1); - return; - } - if(debug['C']) - print("\n"); - if(r->s2) - constprop(c1, v1, r->s2); - } -} - -/* - * ASLL x,y,w - * .. (not use w, not set x y w) - * AXXX w,a,b (a != w) - * .. (not use w) - * (set w) - * ----------- changed to - * .. - * AXXX (x<<y),a,b - * .. - */ -#define FAIL(msg) { if(debug['H']) print("\t%s; FAILURE\n", msg); return 0; } -int -shiftprop(Reg *r) -{ - Reg *r1; - Prog *p, *p1, *p2; - int n, o; - Addr a; - - p = r->prog; - if(p->to.type != D_REG) - FAIL("BOTCH: result not reg"); - n = p->to.reg; - a = zprog.from; - if(p->reg != NREG && p->reg != p->to.reg) { - a.type = D_REG; - a.reg = p->reg; - } - if(debug['H']) - print("shiftprop\n%P", p); - r1 = r; - for(;;) { - /* find first use of shift result; abort if shift operands or result are changed */ - r1 = uniqs(r1); - if(r1 == R) - FAIL("branch"); - if(uniqp(r1) == R) - FAIL("merge"); - p1 = r1->prog; - if(debug['H']) - print("\n%P", p1); - switch(copyu(p1, &p->to, A)) { - case 0: /* not used or set */ - if((p->from.type == D_REG && copyu(p1, &p->from, A) > 1) || - (a.type == D_REG && copyu(p1, &a, A) > 1)) - FAIL("args modified"); - continue; - case 3: /* set, not used */ - FAIL("BOTCH: noref"); - } - break; - } - /* check whether substitution can be done */ - switch(p1->as) { - default: - FAIL("non-dpi"); - case AAND: - case AEOR: - case AADD: - case AADC: - case AORR: - case ASUB: - case ARSB: - case ASBC: - case ARSC: - if(p1->reg == n || (p1->reg == NREG && p1->to.type == D_REG && p1->to.reg == n)) { - if(p1->from.type != D_REG) - FAIL("can't swap"); - p1->reg = p1->from.reg; - p1->from.reg = n; - switch(p1->as) { - case ASUB: - p1->as = ARSB; - break; - case ARSB: - p1->as = ASUB; - break; - case ASBC: - p1->as = ARSC; - break; - case ARSC: - p1->as = ASBC; - break; - } - if(debug['H']) - print("\t=>%P", p1); - } - case ABIC: - case ACMP: - case ACMN: - if(p1->reg == n) - FAIL("can't swap"); - if(p1->reg == NREG && p1->to.reg == n) - FAIL("shift result used twice"); - case AMVN: - if(p1->from.type == D_SHIFT) - FAIL("shift result used in shift"); - if(p1->from.type != D_REG || p1->from.reg != n) - FAIL("BOTCH: where is it used?"); - break; - } - /* check whether shift result is used subsequently */ - p2 = p1; - if(p1->to.reg != n) - for (;;) { - r1 = uniqs(r1); - if(r1 == R) - FAIL("inconclusive"); - p1 = r1->prog; - if(debug['H']) - print("\n%P", p1); - switch(copyu(p1, &p->to, A)) { - case 0: /* not used or set */ - continue; - case 3: /* set, not used */ - break; - default:/* used */ - FAIL("reused"); - } - break; - } - /* make the substitution */ - p2->from.type = D_SHIFT; - p2->from.reg = NREG; - o = p->reg; - if(o == NREG) - o = p->to.reg; - switch(p->from.type){ - case D_CONST: - o |= (p->from.offset&0x1f)<<7; - break; - case D_REG: - o |= (1<<4) | (p->from.reg<<8); - break; - } - switch(p->as){ - case ASLL: - o |= 0<<5; - break; - case ASRL: - o |= 1<<5; - break; - case ASRA: - o |= 2<<5; - break; - } - p2->from.offset = o; - if(debug['H']) - print("\t=>%P\tSUCCEED\n", p2); - return 1; -} - -Reg* -findpre(Reg *r, Addr *v) -{ - Reg *r1; - - for(r1=uniqp(r); r1!=R; r=r1,r1=uniqp(r)) { - if(uniqs(r1) != r) - return R; - switch(copyu(r1->prog, v, A)) { - case 1: /* used */ - case 2: /* read-alter-rewrite */ - return R; - case 3: /* set */ - case 4: /* set and used */ - return r1; - } - } - return R; -} - -Reg* -findinc(Reg *r, Reg *r2, Addr *v) -{ - Reg *r1; - Prog *p; - - - for(r1=uniqs(r); r1!=R && r1!=r2; r=r1,r1=uniqs(r)) { - if(uniqp(r1) != r) - return R; - switch(copyu(r1->prog, v, A)) { - case 0: /* not touched */ - continue; - case 4: /* set and used */ - p = r1->prog; - if(p->as == AADD) - if(p->from.type == D_CONST) - if(p->from.offset > -4096 && p->from.offset < 4096) - return r1; - default: - return R; - } - } - return R; -} - -int -nochange(Reg *r, Reg *r2, Prog *p) -{ - Addr a[3]; - int i, n; - - if(r == r2) - return 1; - n = 0; - if(p->reg != NREG && p->reg != p->to.reg) { - a[n].type = D_REG; - a[n++].reg = p->reg; - } - switch(p->from.type) { - case D_SHIFT: - a[n].type = D_REG; - a[n++].reg = p->from.offset&0xf; - case D_REG: - a[n].type = D_REG; - a[n++].reg = p->from.reg; - } - if(n == 0) - return 1; - for(; r!=R && r!=r2; r=uniqs(r)) { - p = r->prog; - for(i=0; i<n; i++) - if(copyu(p, &a[i], A) > 1) - return 0; - } - return 1; -} - -int -findu1(Reg *r, Addr *v) -{ - for(; r != R; r = r->s1) { - if(r->active) - return 0; - r->active = 1; - switch(copyu(r->prog, v, A)) { - case 1: /* used */ - case 2: /* read-alter-rewrite */ - case 4: /* set and used */ - return 1; - case 3: /* set */ - return 0; - } - if(r->s2) - if (findu1(r->s2, v)) - return 1; - } - return 0; -} - -int -finduse(Reg *r, Addr *v) -{ - Reg *r1; - - for(r1=firstr; r1!=R; r1=r1->link) - r1->active = 0; - return findu1(r, v); -} - -int -xtramodes(Reg *r, Addr *a) -{ - Reg *r1, *r2, *r3; - Prog *p, *p1; - Addr v; - - p = r->prog; - if((p->as == AMOVB || p->as == AMOVBS) && p->from.type == D_OREG) /* byte load */ - return 0; - v = *a; - v.type = D_REG; - r1 = findpre(r, &v); - if(r1 != R) { - p1 = r1->prog; - if(p1->to.type == D_REG && p1->to.reg == v.reg) - switch(p1->as) { - case AADD: - if(p1->from.type == D_REG || - (p1->from.type == D_SHIFT && (p1->from.offset&(1<<4)) == 0 && - ((p->as != AMOVB && p->as != AMOVBS) || (a == &p->from && (p1->from.offset&~0xf) == 0))) || - (p1->from.type == D_CONST && - p1->from.offset > -4096 && p1->from.offset < 4096)) - if(nochange(uniqs(r1), r, p1)) { - if(a != &p->from || v.reg != p->to.reg) - if (finduse(r->s1, &v)) { - if(p1->reg == NREG || p1->reg == v.reg) - /* pre-indexing */ - p->scond |= C_WBIT; - else return 0; - } - switch (p1->from.type) { - case D_REG: - /* register offset */ - if(nacl) - return 0; - a->type = D_SHIFT; - a->offset = p1->from.reg; - break; - case D_SHIFT: - /* scaled register offset */ - if(nacl) - return 0; - a->type = D_SHIFT; - case D_CONST: - /* immediate offset */ - a->offset = p1->from.offset; - break; - } - if(p1->reg != NREG) - a->reg = p1->reg; - excise(r1); - return 1; - } - break; - case AMOVW: - if(p1->from.type == D_REG) - if((r2 = findinc(r1, r, &p1->from)) != R) { - for(r3=uniqs(r2); r3->prog->as==ANOP; r3=uniqs(r3)) - ; - if(r3 == r) { - /* post-indexing */ - p1 = r2->prog; - a->reg = p1->to.reg; - a->offset = p1->from.offset; - p->scond |= C_PBIT; - if(!finduse(r, &r1->prog->to)) - excise(r1); - excise(r2); - return 1; - } - } - break; - } - } - if(a != &p->from || a->reg != p->to.reg) - if((r1 = findinc(r, R, &v)) != R) { - /* post-indexing */ - p1 = r1->prog; - a->offset = p1->from.offset; - p->scond |= C_PBIT; - excise(r1); - return 1; - } - return 0; -} - -/* - * return - * 1 if v only used (and substitute), - * 2 if read-alter-rewrite - * 3 if set - * 4 if set and used - * 0 otherwise (not touched) - */ -int -copyu(Prog *p, Addr *v, Addr *s) -{ - - switch(p->as) { - - default: - if(debug['P']) - print(" (?)"); - return 2; - - case AMOVM: - if(v->type != D_REG) - return 0; - if(p->from.type == D_CONST) { /* read reglist, read/rar */ - if(s != A) { - if(p->from.offset&(1<<v->reg)) - return 1; - if(copysub(&p->to, v, s, 1)) - return 1; - return 0; - } - if(copyau(&p->to, v)) { - if(p->scond&C_WBIT) - return 2; - return 1; - } - if(p->from.offset&(1<<v->reg)) - return 1; - } else { /* read/rar, write reglist */ - if(s != A) { - if(p->to.offset&(1<<v->reg)) - return 1; - if(copysub(&p->from, v, s, 1)) - return 1; - return 0; - } - if(copyau(&p->from, v)) { - if(p->scond&C_WBIT) - return 2; - if(p->to.offset&(1<<v->reg)) - return 4; - return 1; - } - if(p->to.offset&(1<<v->reg)) - return 3; - } - return 0; - - case ANOP: /* read, write */ - case AMOVW: - case AMOVF: - case AMOVD: - case AMOVH: - case AMOVHS: - case AMOVHU: - case AMOVB: - case AMOVBS: - case AMOVBU: - case AMOVDW: - case AMOVWD: - case AMOVFD: - case AMOVDF: - if(p->scond&(C_WBIT|C_PBIT)) - if(v->type == D_REG) { - if(p->from.type == D_OREG || p->from.type == D_SHIFT) { - if(p->from.reg == v->reg) - return 2; - } else { - if(p->to.reg == v->reg) - return 2; - } - } - if(s != A) { - if(copysub(&p->from, v, s, 1)) - return 1; - if(!copyas(&p->to, v)) - if(copysub(&p->to, v, s, 1)) - return 1; - return 0; - } - if(copyas(&p->to, v)) { - if(copyau(&p->from, v)) - return 4; - return 3; - } - if(copyau(&p->from, v)) - return 1; - if(copyau(&p->to, v)) - return 1; - return 0; - - - case AADD: /* read, read, write */ - case ASUB: - case ARSB: - case ASLL: - case ASRL: - case ASRA: - case AORR: - case AAND: - case AEOR: - case AMUL: - case ADIV: - case ADIVU: - case AADDF: - case AADDD: - case ASUBF: - case ASUBD: - case AMULF: - case AMULD: - case ADIVF: - case ADIVD: - - case ACMPF: - case ACMPD: - case ACMP: - case ACMN: - case ACASE: - if(s != A) { - if(copysub(&p->from, v, s, 1)) - return 1; - if(copysub1(p, v, s, 1)) - return 1; - if(!copyas(&p->to, v)) - if(copysub(&p->to, v, s, 1)) - return 1; - return 0; - } - if(copyas(&p->to, v)) { - if(p->reg == NREG) - p->reg = p->to.reg; - if(copyau(&p->from, v)) - return 4; - if(copyau1(p, v)) - return 4; - return 3; - } - if(copyau(&p->from, v)) - return 1; - if(copyau1(p, v)) - return 1; - if(copyau(&p->to, v)) - return 1; - return 0; - - case ABEQ: /* read, read */ - case ABNE: - case ABCS: - case ABHS: - case ABCC: - case ABLO: - case ABMI: - case ABPL: - case ABVS: - case ABVC: - case ABHI: - case ABLS: - case ABGE: - case ABLT: - case ABGT: - case ABLE: - case APLD: - if(s != A) { - if(copysub(&p->from, v, s, 1)) - return 1; - return copysub1(p, v, s, 1); - } - if(copyau(&p->from, v)) - return 1; - if(copyau1(p, v)) - return 1; - return 0; - - case AB: /* funny */ - if(s != A) { - if(copysub(&p->to, v, s, 1)) - return 1; - return 0; - } - if(copyau(&p->to, v)) - return 1; - return 0; - - case ARET: /* funny */ - if(v->type == D_REG) - if(v->reg == REGRET) - return 2; - if(v->type == D_FREG) - if(v->reg == FREGRET) - return 2; - - case ABL: /* funny */ - if(v->type == D_REG) { - if(v->reg <= REGEXT && v->reg > exregoffset) - return 2; - if(v->reg == REGARG) - return 2; - } - if(v->type == D_FREG) - if(v->reg <= FREGEXT && v->reg > exfregoffset) - return 2; - - if(s != A) { - if(copysub(&p->to, v, s, 1)) - return 1; - return 0; - } - if(copyau(&p->to, v)) - return 4; - return 3; - - case ATEXT: /* funny */ - if(v->type == D_REG) - if(v->reg == REGARG) - return 3; - return 0; - } -} - -int -a2type(Prog *p) -{ - - switch(p->as) { - - case ACMP: - case ACMN: - - case AADD: - case ASUB: - case ARSB: - case ASLL: - case ASRL: - case ASRA: - case AORR: - case AAND: - case AEOR: - case AMUL: - case ADIV: - case ADIVU: - return D_REG; - - case ACMPF: - case ACMPD: - - case AADDF: - case AADDD: - case ASUBF: - case ASUBD: - case AMULF: - case AMULD: - case ADIVF: - case ADIVD: - return D_FREG; - } - return D_NONE; -} - -/* - * direct reference, - * could be set/use depending on - * semantics - */ -int -copyas(Addr *a, Addr *v) -{ - - if(regtyp(v)) { - if(a->type == v->type) - if(a->reg == v->reg) - return 1; - } else if(v->type == D_CONST) { /* for constprop */ - if(a->type == v->type) - if(a->name == v->name) - if(a->sym == v->sym) - if(a->reg == v->reg) - if(a->offset == v->offset) - return 1; - } - return 0; -} - -/* - * either direct or indirect - */ -int -copyau(Addr *a, Addr *v) -{ - - if(copyas(a, v)) - return 1; - if(v->type == D_REG) { - if(a->type == D_OREG) { - if(v->reg == a->reg) - return 1; - } else if(a->type == D_SHIFT) { - if((a->offset&0xf) == v->reg) - return 1; - if((a->offset&(1<<4)) && (a->offset>>8) == v->reg) - return 1; - } - } - return 0; -} - -int -copyau1(Prog *p, Addr *v) -{ - - if(regtyp(v)) { - if(a2type(p) == v->type) - if(p->reg == v->reg) { - if(a2type(p) != v->type) - print("botch a2type %P\n", p); - return 1; - } - } - return 0; -} - -/* - * substitute s for v in a - * return failure to substitute - */ -int -copysub(Addr *a, Addr *v, Addr *s, int f) -{ - - if(f) - if(copyau(a, v)) { - if(a->type == D_SHIFT) { - if((a->offset&0xf) == v->reg) - a->offset = (a->offset&~0xf)|s->reg; - if((a->offset&(1<<4)) && (a->offset>>8) == v->reg) - a->offset = (a->offset&~(0xf<<8))|(s->reg<<8); - } else - a->reg = s->reg; - } - return 0; -} - -int -copysub1(Prog *p1, Addr *v, Addr *s, int f) -{ - - if(f) - if(copyau1(p1, v)) - p1->reg = s->reg; - return 0; -} - -struct { - int opcode; - int notopcode; - int scond; - int notscond; -} predinfo[] = { - { ABEQ, ABNE, 0x0, 0x1, }, - { ABNE, ABEQ, 0x1, 0x0, }, - { ABCS, ABCC, 0x2, 0x3, }, - { ABHS, ABLO, 0x2, 0x3, }, - { ABCC, ABCS, 0x3, 0x2, }, - { ABLO, ABHS, 0x3, 0x2, }, - { ABMI, ABPL, 0x4, 0x5, }, - { ABPL, ABMI, 0x5, 0x4, }, - { ABVS, ABVC, 0x6, 0x7, }, - { ABVC, ABVS, 0x7, 0x6, }, - { ABHI, ABLS, 0x8, 0x9, }, - { ABLS, ABHI, 0x9, 0x8, }, - { ABGE, ABLT, 0xA, 0xB, }, - { ABLT, ABGE, 0xB, 0xA, }, - { ABGT, ABLE, 0xC, 0xD, }, - { ABLE, ABGT, 0xD, 0xC, }, -}; - -typedef struct { - Reg *start; - Reg *last; - Reg *end; - int len; -} Joininfo; - -enum { - Join, - Split, - End, - Branch, - Setcond, - Toolong -}; - -enum { - Falsecond, - Truecond, - Delbranch, - Keepbranch -}; - -int -isbranch(Prog *p) -{ - return (ABEQ <= p->as) && (p->as <= ABLE); -} - -int -predicable(Prog *p) -{ - if (isbranch(p) - || p->as == ANOP - || p->as == AXXX - || p->as == ADATA - || p->as == AGLOBL - || p->as == AGOK - || p->as == AHISTORY - || p->as == ANAME - || p->as == ASIGNAME - || p->as == ATEXT - || p->as == AWORD - || p->as == ABCASE - || p->as == ACASE) - return 0; - return 1; -} - -/* - * Depends on an analysis of the encodings performed by 5l. - * These seem to be all of the opcodes that lead to the "S" bit - * being set in the instruction encodings. - * - * C_SBIT may also have been set explicitly in p->scond. - */ -int -modifiescpsr(Prog *p) -{ - return (p->scond&C_SBIT) - || p->as == ATST - || p->as == ATEQ - || p->as == ACMN - || p->as == ACMP - || p->as == AMULU - || p->as == ADIVU - || p->as == AMUL - || p->as == ADIV - || p->as == AMOD - || p->as == AMODU - || p->as == ABL; -} - -/* - * Find the maximal chain of instructions starting with r which could - * be executed conditionally - */ -int -joinsplit(Reg *r, Joininfo *j) -{ - j->start = r; - j->last = r; - j->len = 0; - do { - if (r->p2 && (r->p1 || r->p2->p2link)) { - j->end = r; - return Join; - } - if (r->s1 && r->s2) { - j->end = r; - return Split; - } - j->last = r; - if (r->prog->as != ANOP) - j->len++; - if (!r->s1 && !r->s2) { - j->end = r->link; - return End; - } - if (r->s2) { - j->end = r->s2; - return Branch; - } - if (modifiescpsr(r->prog)) { - j->end = r->s1; - return Setcond; - } - r = r->s1; - } while (j->len < 4); - j->end = r; - return Toolong; -} - -Reg * -successor(Reg *r) -{ - if (r->s1) - return r->s1; - else - return r->s2; -} - -void -applypred(Reg *rstart, Joininfo *j, int cond, int branch) -{ - int pred; - Reg *r; - - if(j->len == 0) - return; - if (cond == Truecond) - pred = predinfo[rstart->prog->as - ABEQ].scond; - else - pred = predinfo[rstart->prog->as - ABEQ].notscond; - - for (r = j->start; ; r = successor(r)) { - if (r->prog->as == AB) { - if (r != j->last || branch == Delbranch) - excise(r); - else { - if (cond == Truecond) - r->prog->as = predinfo[rstart->prog->as - ABEQ].opcode; - else - r->prog->as = predinfo[rstart->prog->as - ABEQ].notopcode; - } - } - else if (predicable(r->prog)) - r->prog->scond = (r->prog->scond&~C_SCOND)|pred; - if (r->s1 != r->link) { - r->s1 = r->link; - r->link->p1 = r; - } - if (r == j->last) - break; - } -} - -void -predicate(void) -{ - Reg *r; - int t1, t2; - Joininfo j1, j2; - - for(r=firstr; r!=R; r=r->link) { - if (isbranch(r->prog)) { - t1 = joinsplit(r->s1, &j1); - t2 = joinsplit(r->s2, &j2); - if(j1.last->link != j2.start) - continue; - if(j1.end == j2.end) - if((t1 == Branch && (t2 == Join || t2 == Setcond)) || - (t2 == Join && (t1 == Join || t1 == Setcond))) { - applypred(r, &j1, Falsecond, Delbranch); - applypred(r, &j2, Truecond, Delbranch); - excise(r); - continue; - } - if(t1 == End || t1 == Branch) { - applypred(r, &j1, Falsecond, Keepbranch); - excise(r); - continue; - } - } - } -} diff --git a/src/cmd/5c/reg.c b/src/cmd/5c/reg.c deleted file mode 100644 index 9024d5f49..000000000 --- a/src/cmd/5c/reg.c +++ /dev/null @@ -1,1210 +0,0 @@ -// Inferno utils/5c/reg.c -// http://code.google.com/p/inferno-os/source/browse/utils/5c/reg.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - - -#include "gc.h" - -void addsplits(void); - -Reg* -rega(void) -{ - Reg *r; - - r = freer; - if(r == R) { - r = alloc(sizeof(*r)); - } else - freer = r->link; - - *r = zreg; - return r; -} - -int -rcmp(const void *a1, const void *a2) -{ - Rgn *p1, *p2; - int c1, c2; - - p1 = (Rgn*)a1; - p2 = (Rgn*)a2; - c1 = p2->cost; - c2 = p1->cost; - if(c1 -= c2) - return c1; - return p2->varno - p1->varno; -} - -void -regopt(Prog *p) -{ - Reg *r, *r1, *r2; - Prog *p1; - int i, z; - int32 initpc, val, npc; - uint32 vreg; - Bits bit; - struct - { - int32 m; - int32 c; - Reg* p; - } log5[6], *lp; - - firstr = R; - lastr = R; - nvar = 0; - regbits = 0; - for(z=0; z<BITS; z++) { - externs.b[z] = 0; - params.b[z] = 0; - consts.b[z] = 0; - addrs.b[z] = 0; - } - - /* - * pass 1 - * build aux data structure - * allocate pcs - * find use and set of variables - */ - val = 5L * 5L * 5L * 5L * 5L; - lp = log5; - for(i=0; i<5; i++) { - lp->m = val; - lp->c = 0; - lp->p = R; - val /= 5L; - lp++; - } - val = 0; - for(; p != P; p = p->link) { - switch(p->as) { - case ADATA: - case AGLOBL: - case ANAME: - case ASIGNAME: - case AFUNCDATA: - continue; - } - r = rega(); - if(firstr == R) { - firstr = r; - lastr = r; - } else { - lastr->link = r; - r->p1 = lastr; - lastr->s1 = r; - lastr = r; - } - r->prog = p; - r->pc = val; - val++; - - lp = log5; - for(i=0; i<5; i++) { - lp->c--; - if(lp->c <= 0) { - lp->c = lp->m; - if(lp->p != R) - lp->p->log5 = r; - lp->p = r; - (lp+1)->c = 0; - break; - } - lp++; - } - - r1 = r->p1; - if(r1 != R) - switch(r1->prog->as) { - case ARET: - case AB: - case ARFE: - r->p1 = R; - r1->s1 = R; - } - - /* - * left side always read - */ - bit = mkvar(&p->from, p->as==AMOVW); - for(z=0; z<BITS; z++) - r->use1.b[z] |= bit.b[z]; - - /* - * right side depends on opcode - */ - bit = mkvar(&p->to, 0); - if(bany(&bit)) - switch(p->as) { - default: - diag(Z, "reg: unknown asop: %A", p->as); - break; - - /* - * right side write - */ - case ANOP: - case AMOVB: - case AMOVBS: - case AMOVBU: - case AMOVH: - case AMOVHS: - case AMOVHU: - case AMOVW: - case AMOVF: - case AMOVD: - for(z=0; z<BITS; z++) - r->set.b[z] |= bit.b[z]; - break; - - /* - * right side read - */ - case APLD: - for(z=0; z<BITS; z++) - r->use2.b[z] |= bit.b[z]; - break; - - /* - * funny - */ - case ABL: - for(z=0; z<BITS; z++) - addrs.b[z] |= bit.b[z]; - break; - } - - /* the mod/div runtime routines smash R12 */ - switch(p->as) { - case AMOD: - case AMODU: - case ADIV: - case ADIVU: - regbits |= RtoB(12); - break; - } - - if(p->as == AMOVM) { - if(p->from.type == D_CONST) - z = p->from.offset; - else - z = p->to.offset; - for(i=0; z; i++) { - if(z&1) - regbits |= RtoB(i); - z >>= 1; - } - } - } - if(firstr == R) - return; - initpc = pc - val; - npc = val; - - /* - * pass 2 - * turn branch references to pointers - * build back pointers - */ - for(r = firstr; r != R; r = r->link) { - p = r->prog; - if(p->to.type == D_BRANCH) { - val = p->to.offset - initpc; - r1 = firstr; - while(r1 != R) { - r2 = r1->log5; - if(r2 != R && val >= r2->pc) { - r1 = r2; - continue; - } - if(r1->pc == val) - break; - r1 = r1->link; - } - if(r1 == R) { - nearln = p->lineno; - diag(Z, "ref not found\n%P", p); - continue; - } - if(r1 == r) { - nearln = p->lineno; - diag(Z, "ref to self\n%P", p); - continue; - } - r->s2 = r1; - r->p2link = r1->p2; - r1->p2 = r; - } - } - if(debug['R']) { - p = firstr->prog; - print("\n%L %D\n", p->lineno, &p->from); - } - - /* - * pass 2.5 - * find looping structure - */ - for(r = firstr; r != R; r = r->link) - r->active = 0; - change = 0; - loopit(firstr, npc); - - /* - * pass 3 - * iterate propagating usage - * back until flow graph is complete - */ -loop1: - change = 0; - for(r = firstr; r != R; r = r->link) - r->active = 0; - for(r = firstr; r != R; r = r->link) - if(r->prog->as == ARET) - prop(r, zbits, zbits); -loop11: - /* pick up unreachable code */ - i = 0; - for(r = firstr; r != R; r = r1) { - r1 = r->link; - if(r1 && r1->active && !r->active) { - prop(r, zbits, zbits); - i = 1; - } - } - if(i) - goto loop11; - if(change) - goto loop1; - - - /* - * pass 4 - * iterate propagating register/variable synchrony - * forward until graph is complete - */ -loop2: - change = 0; - for(r = firstr; r != R; r = r->link) - r->active = 0; - synch(firstr, zbits); - if(change) - goto loop2; - - addsplits(); - - if(debug['R'] && debug['v']) { - print("\nprop structure:\n"); - for(r = firstr; r != R; r = r->link) { - print("%d:%P", r->loop, r->prog); - for(z=0; z<BITS; z++) - bit.b[z] = r->set.b[z] | - r->refahead.b[z] | r->calahead.b[z] | - r->refbehind.b[z] | r->calbehind.b[z] | - r->use1.b[z] | r->use2.b[z]; - if(bany(&bit)) { - print("\t"); - if(bany(&r->use1)) - print(" u1=%B", r->use1); - if(bany(&r->use2)) - print(" u2=%B", r->use2); - if(bany(&r->set)) - print(" st=%B", r->set); - if(bany(&r->refahead)) - print(" ra=%B", r->refahead); - if(bany(&r->calahead)) - print(" ca=%B", r->calahead); - if(bany(&r->refbehind)) - print(" rb=%B", r->refbehind); - if(bany(&r->calbehind)) - print(" cb=%B", r->calbehind); - } - print("\n"); - } - } - - /* - * pass 5 - * isolate regions - * calculate costs (paint1) - */ - r = firstr; - if(r) { - for(z=0; z<BITS; z++) - bit.b[z] = (r->refahead.b[z] | r->calahead.b[z]) & - ~(externs.b[z] | params.b[z] | addrs.b[z] | consts.b[z]); - if(bany(&bit)) { - nearln = r->prog->lineno; - warn(Z, "used and not set: %B", bit); - if(debug['R'] && !debug['w']) - print("used and not set: %B\n", bit); - } - } - - for(r = firstr; r != R; r = r->link) - r->act = zbits; - rgp = region; - nregion = 0; - for(r = firstr; r != R; r = r->link) { - for(z=0; z<BITS; z++) - bit.b[z] = r->set.b[z] & - ~(r->refahead.b[z] | r->calahead.b[z] | addrs.b[z]); - if(bany(&bit)) { - nearln = r->prog->lineno; - warn(Z, "set and not used: %B", bit); - if(debug['R']) - print("set and not used: %B\n", bit); - excise(r); - } - for(z=0; z<BITS; z++) - bit.b[z] = LOAD(r) & ~(r->act.b[z] | addrs.b[z]); - while(bany(&bit)) { - i = bnum(bit); - rgp->enter = r; - rgp->varno = i; - change = 0; - if(debug['R'] && debug['v']) - print("\n"); - paint1(r, i); - bit.b[i/32] &= ~(1L<<(i%32)); - if(change <= 0) { - if(debug['R']) - print("%L $%d: %B\n", - r->prog->lineno, change, blsh(i)); - continue; - } - rgp->cost = change; - nregion++; - if(nregion >= NRGN) { - fatal(Z, "too many regions"); - goto brk; - } - rgp++; - } - } -brk: - qsort(region, nregion, sizeof(region[0]), rcmp); - - /* - * pass 6 - * determine used registers (paint2) - * replace code (paint3) - */ - rgp = region; - for(i=0; i<nregion; i++) { - bit = blsh(rgp->varno); - vreg = paint2(rgp->enter, rgp->varno); - vreg = allreg(vreg, rgp); - if(debug['R']) { - if(rgp->regno >= NREG) - print("%L $%d F%d: %B\n", - rgp->enter->prog->lineno, - rgp->cost, - rgp->regno-NREG, - bit); - else - print("%L $%d R%d: %B\n", - rgp->enter->prog->lineno, - rgp->cost, - rgp->regno, - bit); - } - if(rgp->regno != 0) - paint3(rgp->enter, rgp->varno, vreg, rgp->regno); - rgp++; - } - /* - * pass 7 - * peep-hole on basic block - */ - if(!debug['R'] || debug['P']) - peep(); - - /* - * pass 8 - * recalculate pc - */ - val = initpc; - for(r = firstr; r != R; r = r1) { - r->pc = val; - p = r->prog; - p1 = P; - r1 = r->link; - if(r1 != R) - p1 = r1->prog; - for(; p != p1; p = p->link) { - switch(p->as) { - default: - val++; - break; - - case ANOP: - case ADATA: - case AGLOBL: - case ANAME: - case ASIGNAME: - case AFUNCDATA: - break; - } - } - } - pc = val; - - /* - * fix up branches - */ - if(debug['R']) - if(bany(&addrs)) - print("addrs: %B\n", addrs); - - r1 = 0; /* set */ - for(r = firstr; r != R; r = r->link) { - p = r->prog; - if(p->to.type == D_BRANCH) { - p->to.offset = r->s2->pc; - p->to.u.branch = r->s2->prog; - } - r1 = r; - } - - /* - * last pass - * eliminate nops - * free aux structures - */ - for(p = firstr->prog; p != P; p = p->link){ - while(p->link && p->link->as == ANOP) - p->link = p->link->link; - } - if(r1 != R) { - r1->link = freer; - freer = firstr; - } -} - -void -addsplits(void) -{ - Reg *r, *r1; - int z, i; - Bits bit; - - for(r = firstr; r != R; r = r->link) { - if(r->loop > 1) - continue; - if(r->prog->as == ABL) - continue; - for(r1 = r->p2; r1 != R; r1 = r1->p2link) { - if(r1->loop <= 1) - continue; - for(z=0; z<BITS; z++) - bit.b[z] = r1->calbehind.b[z] & - (r->refahead.b[z] | r->use1.b[z] | r->use2.b[z]) & - ~(r->calahead.b[z] & addrs.b[z]); - while(bany(&bit)) { - i = bnum(bit); - bit.b[i/32] &= ~(1L << (i%32)); - } - } - } -} - -/* - * add mov b,rn - * just after r - */ -void -addmove(Reg *r, int bn, int rn, int f) -{ - Prog *p, *p1; - Addr *a; - Var *v; - - p1 = alloc(sizeof(*p1)); - *p1 = zprog; - p = r->prog; - - p1->link = p->link; - p->link = p1; - p1->lineno = p->lineno; - - v = var + bn; - - a = &p1->to; - a->sym = v->sym; - a->name = v->name; - a->offset = v->offset; - a->etype = v->etype; - a->type = D_OREG; - if(a->etype == TARRAY || a->sym == nil) - a->type = D_CONST; - - p1->as = AMOVW; - if(v->etype == TCHAR || v->etype == TUCHAR) - p1->as = AMOVBS; - if(v->etype == TSHORT || v->etype == TUSHORT) - p1->as = AMOVHS; - if(v->etype == TFLOAT) - p1->as = AMOVF; - if(v->etype == TDOUBLE) - p1->as = AMOVD; - - p1->from.type = D_REG; - p1->from.reg = rn; - if(rn >= NREG) { - p1->from.type = D_FREG; - p1->from.reg = rn-NREG; - } - if(!f) { - p1->from = *a; - *a = zprog.from; - a->type = D_REG; - a->reg = rn; - if(rn >= NREG) { - a->type = D_FREG; - a->reg = rn-NREG; - } - if(v->etype == TUCHAR) - p1->as = AMOVBU; - if(v->etype == TUSHORT) - p1->as = AMOVHU; - } - if(debug['R']) - print("%P\t.a%P\n", p, p1); -} - -Bits -mkvar(Addr *a, int docon) -{ - Var *v; - int i, t, n, et, z; - int32 o; - Bits bit; - LSym *s; - - t = a->type; - if(t == D_REG && a->reg != NREG) - regbits |= RtoB(a->reg); - if(t == D_FREG && a->reg != NREG) - regbits |= FtoB(a->reg); - s = a->sym; - o = a->offset; - et = a->etype; - if(s == nil) { - if(t != D_CONST || !docon || a->reg != NREG) - goto none; - et = TLONG; - } - if(t == D_CONST) { - if(s == nil && sval(o)) - goto none; - } - - n = a->name; - v = var; - for(i=0; i<nvar; i++) { - if(s == v->sym) - if(n == v->name) - if(o == v->offset) - goto out; - v++; - } - if(s) - if(s->name[0] == '.') - goto none; - if(nvar >= NVAR) - fatal(Z, "variable not optimized: %s", s->name); - i = nvar; - nvar++; - v = &var[i]; - v->sym = s; - v->offset = o; - v->etype = et; - v->name = n; - if(debug['R']) - print("bit=%2d et=%2d %D\n", i, et, a); -out: - bit = blsh(i); - if(n == D_EXTERN || n == D_STATIC) - for(z=0; z<BITS; z++) - externs.b[z] |= bit.b[z]; - if(n == D_PARAM) - for(z=0; z<BITS; z++) - params.b[z] |= bit.b[z]; - if(v->etype != et || !typechlpfd[et]) /* funny punning */ - for(z=0; z<BITS; z++) - addrs.b[z] |= bit.b[z]; - if(t == D_CONST) { - if(s == nil) { - for(z=0; z<BITS; z++) - consts.b[z] |= bit.b[z]; - return bit; - } - if(et != TARRAY) - for(z=0; z<BITS; z++) - addrs.b[z] |= bit.b[z]; - for(z=0; z<BITS; z++) - params.b[z] |= bit.b[z]; - return bit; - } - if(t == D_OREG) - return bit; - -none: - return zbits; -} - -void -prop(Reg *r, Bits ref, Bits cal) -{ - Reg *r1, *r2; - int z; - - for(r1 = r; r1 != R; r1 = r1->p1) { - for(z=0; z<BITS; z++) { - ref.b[z] |= r1->refahead.b[z]; - if(ref.b[z] != r1->refahead.b[z]) { - r1->refahead.b[z] = ref.b[z]; - change++; - } - cal.b[z] |= r1->calahead.b[z]; - if(cal.b[z] != r1->calahead.b[z]) { - r1->calahead.b[z] = cal.b[z]; - change++; - } - } - switch(r1->prog->as) { - case ABL: - for(z=0; z<BITS; z++) { - cal.b[z] |= ref.b[z] | externs.b[z]; - ref.b[z] = 0; - } - break; - - case ATEXT: - for(z=0; z<BITS; z++) { - cal.b[z] = 0; - ref.b[z] = 0; - } - break; - - case ARET: - for(z=0; z<BITS; z++) { - cal.b[z] = externs.b[z]; - ref.b[z] = 0; - } - } - for(z=0; z<BITS; z++) { - ref.b[z] = (ref.b[z] & ~r1->set.b[z]) | - r1->use1.b[z] | r1->use2.b[z]; - cal.b[z] &= ~(r1->set.b[z] | r1->use1.b[z] | r1->use2.b[z]); - r1->refbehind.b[z] = ref.b[z]; - r1->calbehind.b[z] = cal.b[z]; - } - if(r1->active) - break; - r1->active = 1; - } - for(; r != r1; r = r->p1) - for(r2 = r->p2; r2 != R; r2 = r2->p2link) - prop(r2, r->refbehind, r->calbehind); -} - -/* - * find looping structure - * - * 1) find reverse postordering - * 2) find approximate dominators, - * the actual dominators if the flow graph is reducible - * otherwise, dominators plus some other non-dominators. - * See Matthew S. Hecht and Jeffrey D. Ullman, - * "Analysis of a Simple Algorithm for Global Data Flow Problems", - * Conf. Record of ACM Symp. on Principles of Prog. Langs, Boston, Massachusetts, - * Oct. 1-3, 1973, pp. 207-217. - * 3) find all nodes with a predecessor dominated by the current node. - * such a node is a loop head. - * recursively, all preds with a greater rpo number are in the loop - */ -int32 -postorder(Reg *r, Reg **rpo2r, int32 n) -{ - Reg *r1; - - r->rpo = 1; - r1 = r->s1; - if(r1 && !r1->rpo) - n = postorder(r1, rpo2r, n); - r1 = r->s2; - if(r1 && !r1->rpo) - n = postorder(r1, rpo2r, n); - rpo2r[n] = r; - n++; - return n; -} - -int32 -rpolca(int32 *idom, int32 rpo1, int32 rpo2) -{ - int32 t; - - if(rpo1 == -1) - return rpo2; - while(rpo1 != rpo2){ - if(rpo1 > rpo2){ - t = rpo2; - rpo2 = rpo1; - rpo1 = t; - } - while(rpo1 < rpo2){ - t = idom[rpo2]; - if(t >= rpo2) - fatal(Z, "bad idom"); - rpo2 = t; - } - } - return rpo1; -} - -int -doms(int32 *idom, int32 r, int32 s) -{ - while(s > r) - s = idom[s]; - return s == r; -} - -int -loophead(int32 *idom, Reg *r) -{ - int32 src; - - src = r->rpo; - if(r->p1 != R && doms(idom, src, r->p1->rpo)) - return 1; - for(r = r->p2; r != R; r = r->p2link) - if(doms(idom, src, r->rpo)) - return 1; - return 0; -} - -void -loopmark(Reg **rpo2r, int32 head, Reg *r) -{ - if(r->rpo < head || r->active == head) - return; - r->active = head; - r->loop += LOOP; - if(r->p1 != R) - loopmark(rpo2r, head, r->p1); - for(r = r->p2; r != R; r = r->p2link) - loopmark(rpo2r, head, r); -} - -void -loopit(Reg *r, int32 nr) -{ - Reg *r1; - int32 i, d, me; - - if(nr > maxnr) { - rpo2r = alloc(nr * sizeof(Reg*)); - idom = alloc(nr * sizeof(int32)); - maxnr = nr; - } - d = postorder(r, rpo2r, 0); - if(d > nr) - fatal(Z, "too many reg nodes"); - nr = d; - for(i = 0; i < nr / 2; i++){ - r1 = rpo2r[i]; - rpo2r[i] = rpo2r[nr - 1 - i]; - rpo2r[nr - 1 - i] = r1; - } - for(i = 0; i < nr; i++) - rpo2r[i]->rpo = i; - - idom[0] = 0; - for(i = 0; i < nr; i++){ - r1 = rpo2r[i]; - me = r1->rpo; - d = -1; - if(r1->p1 != R && r1->p1->rpo < me) - d = r1->p1->rpo; - for(r1 = r1->p2; r1 != nil; r1 = r1->p2link) - if(r1->rpo < me) - d = rpolca(idom, d, r1->rpo); - idom[i] = d; - } - - for(i = 0; i < nr; i++){ - r1 = rpo2r[i]; - r1->loop++; - if(r1->p2 != R && loophead(idom, r1)) - loopmark(rpo2r, i, r1); - } -} - -void -synch(Reg *r, Bits dif) -{ - Reg *r1; - int z; - - for(r1 = r; r1 != R; r1 = r1->s1) { - for(z=0; z<BITS; z++) { - dif.b[z] = (dif.b[z] & - ~(~r1->refbehind.b[z] & r1->refahead.b[z])) | - r1->set.b[z] | r1->regdiff.b[z]; - if(dif.b[z] != r1->regdiff.b[z]) { - r1->regdiff.b[z] = dif.b[z]; - change++; - } - } - if(r1->active) - break; - r1->active = 1; - for(z=0; z<BITS; z++) - dif.b[z] &= ~(~r1->calbehind.b[z] & r1->calahead.b[z]); - if(r1->s2 != R) - synch(r1->s2, dif); - } -} - -uint32 -allreg(uint32 b, Rgn *r) -{ - Var *v; - int i; - - v = var + r->varno; - r->regno = 0; - switch(v->etype) { - - default: - diag(Z, "unknown etype %d/%d", bitno(b), v->etype); - break; - - case TCHAR: - case TUCHAR: - case TSHORT: - case TUSHORT: - case TINT: - case TUINT: - case TLONG: - case TULONG: - case TIND: - case TARRAY: - i = BtoR(~b); - if(i && r->cost >= 0) { - r->regno = i; - return RtoB(i); - } - break; - - case TVLONG: - case TDOUBLE: - case TFLOAT: - i = BtoF(~b); - if(i && r->cost >= 0) { - r->regno = i+NREG; - return FtoB(i); - } - break; - } - return 0; -} - -void -paint1(Reg *r, int bn) -{ - Reg *r1; - Prog *p; - int z; - uint32 bb; - - z = bn/32; - bb = 1L<<(bn%32); - if(r->act.b[z] & bb) - return; - for(;;) { - if(!(r->refbehind.b[z] & bb)) - break; - r1 = r->p1; - if(r1 == R) - break; - if(!(r1->refahead.b[z] & bb)) - break; - if(r1->act.b[z] & bb) - break; - r = r1; - } - - if(LOAD(r) & ~(r->set.b[z] & ~(r->use1.b[z]|r->use2.b[z])) & bb) { - change -= CLOAD * r->loop; - if(debug['R'] && debug['v']) - print("%d%P\td %B $%d\n", r->loop, - r->prog, blsh(bn), change); - } - for(;;) { - r->act.b[z] |= bb; - p = r->prog; - - if(r->use1.b[z] & bb) { - change += CREF * r->loop; - if(debug['R'] && debug['v']) - print("%d%P\tu1 %B $%d\n", r->loop, - p, blsh(bn), change); - } - - if((r->use2.b[z]|r->set.b[z]) & bb) { - change += CREF * r->loop; - if(debug['R'] && debug['v']) - print("%d%P\tu2 %B $%d\n", r->loop, - p, blsh(bn), change); - } - - if(STORE(r) & r->regdiff.b[z] & bb) { - change -= CLOAD * r->loop; - if(debug['R'] && debug['v']) - print("%d%P\tst %B $%d\n", r->loop, - p, blsh(bn), change); - } - - if(r->refbehind.b[z] & bb) - for(r1 = r->p2; r1 != R; r1 = r1->p2link) - if(r1->refahead.b[z] & bb) - paint1(r1, bn); - - if(!(r->refahead.b[z] & bb)) - break; - r1 = r->s2; - if(r1 != R) - if(r1->refbehind.b[z] & bb) - paint1(r1, bn); - r = r->s1; - if(r == R) - break; - if(r->act.b[z] & bb) - break; - if(!(r->refbehind.b[z] & bb)) - break; - } -} - -uint32 -paint2(Reg *r, int bn) -{ - Reg *r1; - int z; - uint32 bb, vreg; - - z = bn/32; - bb = 1L << (bn%32); - vreg = regbits; - if(!(r->act.b[z] & bb)) - return vreg; - for(;;) { - if(!(r->refbehind.b[z] & bb)) - break; - r1 = r->p1; - if(r1 == R) - break; - if(!(r1->refahead.b[z] & bb)) - break; - if(!(r1->act.b[z] & bb)) - break; - r = r1; - } - for(;;) { - r->act.b[z] &= ~bb; - - vreg |= r->regu; - - if(r->refbehind.b[z] & bb) - for(r1 = r->p2; r1 != R; r1 = r1->p2link) - if(r1->refahead.b[z] & bb) - vreg |= paint2(r1, bn); - - if(!(r->refahead.b[z] & bb)) - break; - r1 = r->s2; - if(r1 != R) - if(r1->refbehind.b[z] & bb) - vreg |= paint2(r1, bn); - r = r->s1; - if(r == R) - break; - if(!(r->act.b[z] & bb)) - break; - if(!(r->refbehind.b[z] & bb)) - break; - } - return vreg; -} - -void -paint3(Reg *r, int bn, int32 rb, int rn) -{ - Reg *r1; - Prog *p; - int z; - uint32 bb; - - z = bn/32; - bb = 1L << (bn%32); - if(r->act.b[z] & bb) - return; - for(;;) { - if(!(r->refbehind.b[z] & bb)) - break; - r1 = r->p1; - if(r1 == R) - break; - if(!(r1->refahead.b[z] & bb)) - break; - if(r1->act.b[z] & bb) - break; - r = r1; - } - - if(LOAD(r) & ~(r->set.b[z] & ~(r->use1.b[z]|r->use2.b[z])) & bb) - addmove(r, bn, rn, 0); - for(;;) { - r->act.b[z] |= bb; - p = r->prog; - - if(r->use1.b[z] & bb) { - if(debug['R']) - print("%P", p); - addreg(&p->from, rn); - if(debug['R']) - print("\t.c%P\n", p); - } - if((r->use2.b[z]|r->set.b[z]) & bb) { - if(debug['R']) - print("%P", p); - addreg(&p->to, rn); - if(debug['R']) - print("\t.c%P\n", p); - } - - if(STORE(r) & r->regdiff.b[z] & bb) - addmove(r, bn, rn, 1); - r->regu |= rb; - - if(r->refbehind.b[z] & bb) - for(r1 = r->p2; r1 != R; r1 = r1->p2link) - if(r1->refahead.b[z] & bb) - paint3(r1, bn, rb, rn); - - if(!(r->refahead.b[z] & bb)) - break; - r1 = r->s2; - if(r1 != R) - if(r1->refbehind.b[z] & bb) - paint3(r1, bn, rb, rn); - r = r->s1; - if(r == R) - break; - if(r->act.b[z] & bb) - break; - if(!(r->refbehind.b[z] & bb)) - break; - } -} - -void -addreg(Addr *a, int rn) -{ - - a->sym = 0; - a->name = D_NONE; - a->type = D_REG; - a->reg = rn; - if(rn >= NREG) { - a->type = D_FREG; - a->reg = rn-NREG; - } -} - -/* - * bit reg - * 0 R0 - * 1 R1 - * ... ... - * 10 R10 - * 12 R12 - */ -int32 -RtoB(int r) -{ - - if(r < 2 || (r >= REGTMP-2 && r != 12)) // excluded R9 and R10 for m and g, but not R12 - return 0; - return 1L << r; -} - -int -BtoR(int32 b) -{ - b &= 0x11fcL; // excluded R9 and R10 for m and g, but not R12 - if(b == 0) - return 0; - return bitno(b); -} - -/* - * bit reg - * 18 F2 - * 19 F3 - * ... ... - * 31 F15 - */ -int32 -FtoB(int f) -{ - - if(f < 2 || f > NFREG-1) - return 0; - return 1L << (f + 16); -} - -int -BtoF(int32 b) -{ - - b &= 0xfffc0000L; - if(b == 0) - return 0; - return bitno(b) - 16; -} diff --git a/src/cmd/5c/sgen.c b/src/cmd/5c/sgen.c deleted file mode 100644 index a36612caa..000000000 --- a/src/cmd/5c/sgen.c +++ /dev/null @@ -1,265 +0,0 @@ -// Inferno utils/5c/sgen.c -// http://code.google.com/p/inferno-os/source/browse/utils/5c/sgen.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - - -#include "gc.h" - -Prog* -gtext(Sym *s, int32 stkoff) -{ - int32 a; - - a = argsize(1); - if((textflag & NOSPLIT) != 0 && stkoff >= 128) - yyerror("stack frame too large for NOSPLIT function"); - - gpseudo(ATEXT, s, nodconst(stkoff)); - p->to.type = D_CONST2; - p->to.offset2 = a; - return p; -} - -void -noretval(int n) -{ - - if(n & 1) { - gins(ANOP, Z, Z); - p->to.type = D_REG; - p->to.reg = REGRET; - } - if(n & 2) { - gins(ANOP, Z, Z); - p->to.type = D_FREG; - p->to.reg = FREGRET; - } -} - -/* - * calculate addressability as follows - * CONST ==> 20 $value - * NAME ==> 10 name - * REGISTER ==> 11 register - * INDREG ==> 12 *[(reg)+offset] - * &10 ==> 2 $name - * ADD(2, 20) ==> 2 $name+offset - * ADD(3, 20) ==> 3 $(reg)+offset - * &12 ==> 3 $(reg)+offset - * *11 ==> 11 ?? - * *2 ==> 10 name - * *3 ==> 12 *(reg)+offset - * calculate complexity (number of registers) - */ -void -xcom(Node *n) -{ - Node *l, *r; - int t; - - if(n == Z) - return; - l = n->left; - r = n->right; - n->addable = 0; - n->complex = 0; - switch(n->op) { - case OCONST: - n->addable = 20; - return; - - case OREGISTER: - n->addable = 11; - return; - - case OINDREG: - n->addable = 12; - return; - - case ONAME: - n->addable = 10; - return; - - case OADDR: - xcom(l); - if(l->addable == 10) - n->addable = 2; - if(l->addable == 12) - n->addable = 3; - break; - - case OIND: - xcom(l); - if(l->addable == 11) - n->addable = 12; - if(l->addable == 3) - n->addable = 12; - if(l->addable == 2) - n->addable = 10; - break; - - case OADD: - xcom(l); - xcom(r); - if(l->addable == 20) { - if(r->addable == 2) - n->addable = 2; - if(r->addable == 3) - n->addable = 3; - } - if(r->addable == 20) { - if(l->addable == 2) - n->addable = 2; - if(l->addable == 3) - n->addable = 3; - } - break; - - case OASLMUL: - case OASMUL: - xcom(l); - xcom(r); - t = vlog(r); - if(t >= 0) { - n->op = OASASHL; - r->vconst = t; - r->type = types[TINT]; - } - break; - - case OMUL: - case OLMUL: - xcom(l); - xcom(r); - t = vlog(r); - if(t >= 0) { - n->op = OASHL; - r->vconst = t; - r->type = types[TINT]; - } - t = vlog(l); - if(t >= 0) { - n->op = OASHL; - n->left = r; - n->right = l; - r = l; - l = n->left; - r->vconst = t; - r->type = types[TINT]; - } - break; - - case OASLDIV: - xcom(l); - xcom(r); - t = vlog(r); - if(t >= 0) { - n->op = OASLSHR; - r->vconst = t; - r->type = types[TINT]; - } - break; - - case OLDIV: - xcom(l); - xcom(r); - t = vlog(r); - if(t >= 0) { - n->op = OLSHR; - r->vconst = t; - r->type = types[TINT]; - } - break; - - case OASLMOD: - xcom(l); - xcom(r); - t = vlog(r); - if(t >= 0) { - n->op = OASAND; - r->vconst--; - } - break; - - case OLMOD: - xcom(l); - xcom(r); - t = vlog(r); - if(t >= 0) { - n->op = OAND; - r->vconst--; - } - break; - - default: - if(l != Z) - xcom(l); - if(r != Z) - xcom(r); - break; - } - if(n->addable >= 10) - return; - - if(l != Z) - n->complex = l->complex; - if(r != Z) { - if(r->complex == n->complex) - n->complex = r->complex+1; - else - if(r->complex > n->complex) - n->complex = r->complex; - } - if(n->complex == 0) - n->complex++; - - if(com64(n)) - return; - - switch(n->op) { - case OFUNC: - n->complex = FNX; - break; - - case OADD: - case OXOR: - case OAND: - case OOR: - case OEQ: - case ONE: - /* - * immediate operators, make const on right - */ - if(l->op == OCONST) { - n->left = r; - n->right = l; - } - break; - } -} diff --git a/src/cmd/5c/swt.c b/src/cmd/5c/swt.c deleted file mode 100644 index f39963b8f..000000000 --- a/src/cmd/5c/swt.c +++ /dev/null @@ -1,461 +0,0 @@ -// Inferno utils/5c/swt.c -// http://code.google.com/p/inferno-os/source/browse/utils/5c/swt.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -void -swit1(C1 *q, int nc, int32 def, Node *n) -{ - Node nreg; - - if(typev[n->type->etype]) { - regsalloc(&nreg, n); - nreg.type = types[TVLONG]; - cgen(n, &nreg); - swit2(q, nc, def, &nreg); - return; - } - - regalloc(&nreg, n, Z); - nreg.type = types[TLONG]; - cgen(n, &nreg); - swit2(q, nc, def, &nreg); - regfree(&nreg); -} - -void -swit2(C1 *q, int nc, int32 def, Node *n) -{ - C1 *r; - int i; - int32 v; - Prog *sp; - - if(nc >= 3) { - i = (q+nc-1)->val - (q+0)->val; - if(!nacl && i > 0 && i < nc*2) - goto direct; - } - if(nc < 5) { - for(i=0; i<nc; i++) { - if(debug['W']) - print("case = %.8ux\n", q->val); - gopcode(OEQ, nodconst(q->val), n, Z); - patch(p, q->label); - q++; - } - gbranch(OGOTO); - patch(p, def); - return; - } - - i = nc / 2; - r = q+i; - if(debug['W']) - print("case > %.8ux\n", r->val); - gopcode(OGT, nodconst(r->val), n, Z); - sp = p; - gopcode(OEQ, nodconst(r->val), n, Z); /* just gen the B.EQ */ - patch(p, r->label); - swit2(q, i, def, n); - - if(debug['W']) - print("case < %.8ux\n", r->val); - patch(sp, pc); - swit2(r+1, nc-i-1, def, n); - return; - -direct: - v = q->val; - if(v != 0) - gopcode(OSUB, nodconst(v), Z, n); - gopcode(OCASE, nodconst((q+nc-1)->val - v), n, Z); - patch(p, def); - for(i=0; i<nc; i++) { - if(debug['W']) - print("case = %.8ux\n", q->val); - while(q->val != v) { - nextpc(); - p->as = ABCASE; - patch(p, def); - v++; - } - nextpc(); - p->as = ABCASE; - patch(p, q->label); - q++; - v++; - } - gbranch(OGOTO); /* so that regopt() won't be confused */ - patch(p, def); -} - -void -bitload(Node *b, Node *n1, Node *n2, Node *n3, Node *nn) -{ - int sh; - int32 v; - Node *l; - - /* - * n1 gets adjusted/masked value - * n2 gets address of cell - * n3 gets contents of cell - */ - l = b->left; - if(n2 != Z) { - regalloc(n1, l, nn); - reglcgen(n2, l, Z); - regalloc(n3, l, Z); - gopcode(OAS, n2, Z, n3); - gopcode(OAS, n3, Z, n1); - } else { - regalloc(n1, l, nn); - cgen(l, n1); - } - if(b->type->shift == 0 && typeu[b->type->etype]) { - v = ~0 + (1L << b->type->nbits); - gopcode(OAND, nodconst(v), Z, n1); - } else { - sh = 32 - b->type->shift - b->type->nbits; - if(sh > 0) - gopcode(OASHL, nodconst(sh), Z, n1); - sh += b->type->shift; - if(sh > 0) - if(typeu[b->type->etype]) - gopcode(OLSHR, nodconst(sh), Z, n1); - else - gopcode(OASHR, nodconst(sh), Z, n1); - } -} - -void -bitstore(Node *b, Node *n1, Node *n2, Node *n3, Node *nn) -{ - int32 v; - Node nod, *l; - int sh; - - /* - * n1 has adjusted/masked value - * n2 has address of cell - * n3 has contents of cell - */ - l = b->left; - regalloc(&nod, l, Z); - v = ~0 + (1L << b->type->nbits); - gopcode(OAND, nodconst(v), Z, n1); - gopcode(OAS, n1, Z, &nod); - if(nn != Z) - gopcode(OAS, n1, Z, nn); - sh = b->type->shift; - if(sh > 0) - gopcode(OASHL, nodconst(sh), Z, &nod); - v <<= sh; - gopcode(OAND, nodconst(~v), Z, n3); - gopcode(OOR, n3, Z, &nod); - gopcode(OAS, &nod, Z, n2); - - regfree(&nod); - regfree(n1); - regfree(n2); - regfree(n3); -} - -int32 -outstring(char *s, int32 n) -{ - int32 r; - - if(suppress) - return nstring; - r = nstring; - while(n) { - string[mnstring] = *s++; - mnstring++; - nstring++; - if(mnstring >= NSNAME) { - gpseudo(ADATA, symstring, nodconst(0L)); - p->from.offset += nstring - NSNAME; - p->reg = NSNAME; - p->to.type = D_SCONST; - memmove(p->to.u.sval, string, NSNAME); - mnstring = 0; - } - n--; - } - return r; -} - -int -mulcon(Node *n, Node *nn) -{ - Node *l, *r, nod1, nod2; - Multab *m; - int32 v, vs; - int o; - char code[sizeof(m->code)+2], *p; - - if(typefd[n->type->etype]) - return 0; - l = n->left; - r = n->right; - if(l->op == OCONST) { - l = r; - r = n->left; - } - if(r->op != OCONST) - return 0; - v = convvtox(r->vconst, n->type->etype); - if(v != r->vconst) { - if(debug['M']) - print("%L multiply conv: %lld\n", n->lineno, r->vconst); - return 0; - } - m = mulcon0(v); - if(!m) { - if(debug['M']) - print("%L multiply table: %lld\n", n->lineno, r->vconst); - return 0; - } - if(debug['M'] && debug['v']) - print("%L multiply: %d\n", n->lineno, v); - - memmove(code, m->code, sizeof(m->code)); - code[sizeof(m->code)] = 0; - - p = code; - if(p[1] == 'i') - p += 2; - regalloc(&nod1, n, nn); - cgen(l, &nod1); - vs = v; - regalloc(&nod2, n, Z); - -loop: - switch(*p) { - case 0: - regfree(&nod2); - if(vs < 0) { - gopcode(OAS, &nod1, Z, &nod1); - gopcode(OSUB, &nod1, nodconst(0), nn); - } else - gopcode(OAS, &nod1, Z, nn); - regfree(&nod1); - return 1; - case '+': - o = OADD; - goto addsub; - case '-': - o = OSUB; - addsub: /* number is r,n,l */ - v = p[1] - '0'; - r = &nod1; - if(v&4) - r = &nod2; - n = &nod1; - if(v&2) - n = &nod2; - l = &nod1; - if(v&1) - l = &nod2; - gopcode(o, l, n, r); - break; - default: /* op is shiftcount, number is r,l */ - v = p[1] - '0'; - r = &nod1; - if(v&2) - r = &nod2; - l = &nod1; - if(v&1) - l = &nod2; - v = *p - 'a'; - if(v < 0 || v >= 32) { - diag(n, "mulcon unknown op: %c%c", p[0], p[1]); - break; - } - gopcode(OASHL, nodconst(v), l, r); - break; - } - p += 2; - goto loop; -} - -void -sextern(Sym *s, Node *a, int32 o, int32 w) -{ - int32 e, lw; - - for(e=0; e<w; e+=NSNAME) { - lw = NSNAME; - if(w-e < lw) - lw = w-e; - gpseudo(ADATA, s, nodconst(0)); - p->from.offset += o+e; - p->reg = lw; - p->to.type = D_SCONST; - memmove(p->to.u.sval, a->cstring+e, lw); - } -} - -void -gextern(Sym *s, Node *a, int32 o, int32 w) -{ - - if(a->op == OCONST && typev[a->type->etype]) { - if(isbigendian) - gpseudo(ADATA, s, nod32const(a->vconst>>32)); - else - gpseudo(ADATA, s, nod32const(a->vconst)); - p->from.offset += o; - p->reg = 4; - if(isbigendian) - gpseudo(ADATA, s, nod32const(a->vconst)); - else - gpseudo(ADATA, s, nod32const(a->vconst>>32)); - p->from.offset += o + 4; - p->reg = 4; - return; - } - gpseudo(ADATA, s, a); - p->from.offset += o; - p->reg = w; - if(p->to.type == D_OREG) - p->to.type = D_CONST; -} - -void -outcode(void) -{ - Bprint(&outbuf, "go object %s %s %s\n", getgoos(), getgoarch(), getgoversion()); - if(pragcgobuf.to > pragcgobuf.start) { - Bprint(&outbuf, "\n"); - Bprint(&outbuf, "$$ // exports\n\n"); - Bprint(&outbuf, "$$ // local types\n\n"); - Bprint(&outbuf, "$$ // cgo\n"); - Bprint(&outbuf, "%s", fmtstrflush(&pragcgobuf)); - Bprint(&outbuf, "\n$$\n\n"); - } - Bprint(&outbuf, "!\n"); - - writeobj(ctxt, &outbuf); - lastp = P; -} - -int32 -align(int32 i, Type *t, int op, int32 *maxalign) -{ - int32 o; - Type *v; - int w, packw; - - o = i; - w = 1; - packw = 0; - switch(op) { - default: - diag(Z, "unknown align opcode %d", op); - break; - - case Asu2: /* padding at end of a struct */ - w = *maxalign; - if(w < 1) - w = 1; - if(packflg) - packw = packflg; - break; - - case Ael1: /* initial align of struct element */ - for(v=t; v->etype==TARRAY; v=v->link) - ; - if(v->etype == TSTRUCT || v->etype == TUNION) - w = v->align; - else { - w = ewidth[v->etype]; - if(w == 8) - w = 4; - } - if(w < 1 || w > SZ_LONG) - fatal(Z, "align"); - if(packflg) - packw = packflg; - break; - - case Ael2: /* width of a struct element */ - o += t->width; - break; - - case Aarg0: /* initial passbyptr argument in arg list */ - if(typesuv[t->etype]) { - o = align(o, types[TIND], Aarg1, nil); - o = align(o, types[TIND], Aarg2, nil); - } - break; - - case Aarg1: /* initial align of parameter */ - w = ewidth[t->etype]; - if(w <= 0 || w >= SZ_LONG) { - w = SZ_LONG; - break; - } - w = 1; /* little endian no adjustment */ - break; - - case Aarg2: /* width of a parameter */ - o += t->width; - w = t->width; - if(w > SZ_LONG) - w = SZ_LONG; - break; - - case Aaut3: /* total align of automatic */ - o = align(o, t, Ael2, nil); - o = align(o, t, Ael1, nil); - w = SZ_LONG; /* because of a pun in cc/dcl.c:contig() */ - break; - } - if(packw != 0 && xround(o, w) != xround(o, packw)) - diag(Z, "#pragma pack changes offset of %T", t); - o = xround(o, w); - if(maxalign != nil && *maxalign < w) - *maxalign = w; - if(debug['A']) - print("align %s %d %T = %d\n", bnames[op], i, t, o); - return o; -} - -int32 -maxround(int32 max, int32 v) -{ - v = xround(v, SZ_LONG); - if(v > max) - return v; - return max; -} diff --git a/src/cmd/5c/txt.c b/src/cmd/5c/txt.c deleted file mode 100644 index af40220cc..000000000 --- a/src/cmd/5c/txt.c +++ /dev/null @@ -1,1361 +0,0 @@ -// Inferno utils/5c/txt.c -// http://code.google.com/p/inferno-os/source/browse/utils/5c/txt.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - - -#include "gc.h" - - -int thechar = '5'; -char *thestring = "arm"; - -LinkArch *thelinkarch = &linkarm; - -void -linkarchinit(void) -{ -} - -void -ginit(void) -{ - Type *t; - - exregoffset = REGEXT; - exfregoffset = FREGEXT; - listinit(); - nstring = 0; - mnstring = 0; - nrathole = 0; - pc = 0; - breakpc = -1; - continpc = -1; - cases = C; - lastp = P; - tfield = types[TLONG]; - - zprog.link = P; - zprog.as = AGOK; - zprog.reg = NREG; - zprog.from.type = D_NONE; - zprog.from.name = D_NONE; - zprog.from.reg = NREG; - zprog.to = zprog.from; - zprog.scond = 0xE; - - regnode.op = OREGISTER; - regnode.class = CEXREG; - regnode.reg = REGTMP; - regnode.complex = 0; - regnode.addable = 11; - regnode.type = types[TLONG]; - - constnode.op = OCONST; - constnode.class = CXXX; - constnode.complex = 0; - constnode.addable = 20; - constnode.type = types[TLONG]; - - fconstnode.op = OCONST; - fconstnode.class = CXXX; - fconstnode.complex = 0; - fconstnode.addable = 20; - fconstnode.type = types[TDOUBLE]; - - nodsafe = new(ONAME, Z, Z); - nodsafe->sym = slookup(".safe"); - nodsafe->type = types[TINT]; - nodsafe->etype = types[TINT]->etype; - nodsafe->class = CAUTO; - complex(nodsafe); - - t = typ(TARRAY, types[TCHAR]); - symrathole = slookup(".rathole"); - symrathole->class = CGLOBL; - symrathole->type = t; - - nodrat = new(ONAME, Z, Z); - nodrat->sym = symrathole; - nodrat->type = types[TIND]; - nodrat->etype = TVOID; - nodrat->class = CGLOBL; - complex(nodrat); - nodrat->type = t; - - nodret = new(ONAME, Z, Z); - nodret->sym = slookup(".ret"); - nodret->type = types[TIND]; - nodret->etype = TIND; - nodret->class = CPARAM; - nodret = new(OIND, nodret, Z); - complex(nodret); - - com64init(); - - memset(reg, 0, sizeof(reg)); -} - -void -gclean(void) -{ - int i; - Sym *s; - - for(i=0; i<NREG; i++) - if(reg[i]) - diag(Z, "reg %d left allocated", i); - for(i=NREG; i<NREG+NFREG; i++) - if(reg[i]) - diag(Z, "freg %d left allocated", i-NREG); - while(mnstring) - outstring("", 1L); - symstring->type->width = nstring; - symrathole->type->width = nrathole; - for(i=0; i<NHASH; i++) - for(s = hash[i]; s != S; s = s->link) { - if(s->type == T) - continue; - if(s->type->width == 0) - continue; - if(s->class != CGLOBL && s->class != CSTATIC) - continue; - if(s->type == types[TENUM]) - continue; - gpseudo(AGLOBL, s, nodconst(s->type->width)); - } - nextpc(); - p->as = AEND; - outcode(); -} - -void -nextpc(void) -{ - Plist *pl; - - p = alloc(sizeof(*p)); - *p = zprog; - p->lineno = nearln; - pc++; - if(lastp == nil) { - pl = linknewplist(ctxt); - pl->firstpc = p; - } else - lastp->link = p; - lastp = p; -} - -void -gargs(Node *n, Node *tn1, Node *tn2) -{ - int32 regs; - Node fnxargs[20], *fnxp; - - regs = cursafe; - - fnxp = fnxargs; - garg1(n, tn1, tn2, 0, &fnxp); /* compile fns to temps */ - - curarg = 0; - fnxp = fnxargs; - garg1(n, tn1, tn2, 1, &fnxp); /* compile normal args and temps */ - - cursafe = regs; -} - -void -garg1(Node *n, Node *tn1, Node *tn2, int f, Node **fnxp) -{ - Node nod; - - if(n == Z) - return; - if(n->op == OLIST) { - garg1(n->left, tn1, tn2, f, fnxp); - garg1(n->right, tn1, tn2, f, fnxp); - return; - } - if(f == 0) { - if(n->complex >= FNX) { - regsalloc(*fnxp, n); - nod = znode; - nod.op = OAS; - nod.left = *fnxp; - nod.right = n; - nod.type = n->type; - cgen(&nod, Z); - (*fnxp)++; - } - return; - } - if(typesuv[n->type->etype]) { - regaalloc(tn2, n); - if(n->complex >= FNX) { - sugen(*fnxp, tn2, n->type->width); - (*fnxp)++; - } else - sugen(n, tn2, n->type->width); - return; - } - if(REGARG >= 0 && curarg == 0 && typechlp[n->type->etype]) { - regaalloc1(tn1, n); - if(n->complex >= FNX) { - cgen(*fnxp, tn1); - (*fnxp)++; - } else - cgen(n, tn1); - return; - } - regalloc(tn1, n, Z); - if(n->complex >= FNX) { - cgen(*fnxp, tn1); - (*fnxp)++; - } else - cgen(n, tn1); - regaalloc(tn2, n); - gopcode(OAS, tn1, Z, tn2); - regfree(tn1); -} - -Node* -nodconst(int32 v) -{ - constnode.vconst = v; - return &constnode; -} - -Node* -nod32const(vlong v) -{ - constnode.vconst = v & MASK(32); - return &constnode; -} - -Node* -nodfconst(double d) -{ - fconstnode.fconst = d; - return &fconstnode; -} - -void -nodreg(Node *n, Node *nn, int reg) -{ - *n = regnode; - n->reg = reg; - n->type = nn->type; - n->lineno = nn->lineno; -} - -void -regret(Node *n, Node *nn, Type *t, int mode) -{ - int r; - - if(mode == 0 || hasdotdotdot(t) || nn->type->width == 0) { - r = REGRET; - if(typefd[nn->type->etype]) - r = FREGRET+NREG; - nodreg(n, nn, r); - reg[r]++; - return; - } - - if(mode == 1) { - // fetch returned value after call. - // already called gargs, so curarg is set. - curarg = (curarg+3) & ~3; - regaalloc(n, nn); - return; - } - - if(mode == 2) { - // store value to be returned. - // must compute arg offset. - if(t->etype != TFUNC) - fatal(Z, "bad regret func %T", t); - *n = *nn; - n->op = ONAME; - n->class = CPARAM; - n->sym = slookup(".ret"); - n->complex = nodret->complex; - n->xoffset = argsize(0); - n->addable = 20; - return; - } - - fatal(Z, "bad regret"); -} - -int -tmpreg(void) -{ - int i; - - for(i=REGRET+1; i<NREG; i++) - if(reg[i] == 0) - return i; - diag(Z, "out of fixed registers"); - return 0; -} - -void -regalloc(Node *n, Node *tn, Node *o) -{ - int i; - - switch(tn->type->etype) { - case TCHAR: - case TUCHAR: - case TSHORT: - case TUSHORT: - case TINT: - case TUINT: - case TLONG: - case TULONG: - case TIND: - if(o != Z && o->op == OREGISTER) { - i = o->reg; - if(i >= 0 && i < NREG) - goto out; - } - for(i=REGRET+1; i<=REGEXT-2; i++) - if(reg[i] == 0) - goto out; - diag(tn, "out of fixed registers"); - goto err; - - case TFLOAT: - case TDOUBLE: - case TVLONG: - if(o != Z && o->op == OREGISTER) { - i = o->reg; - if(i >= NREG && i < NREG+NFREG) - goto out; - } - for(i=NREG; i<NREG+NFREG; i++) - if(reg[i] == 0) - goto out; - diag(tn, "out of float registers"); - goto err; - } - diag(tn, "unknown type in regalloc: %T", tn->type); -err: - nodreg(n, tn, 0); - return; -out: - reg[i]++; - nodreg(n, tn, i); -} - -void -regialloc(Node *n, Node *tn, Node *o) -{ - Node nod; - - nod = *tn; - nod.type = types[TIND]; - regalloc(n, &nod, o); -} - -void -regfree(Node *n) -{ - int i; - - i = 0; - if(n->op != OREGISTER && n->op != OINDREG) - goto err; - i = n->reg; - if(i < 0 || i >= nelem(reg)) - goto err; - if(reg[i] <= 0) - goto err; - reg[i]--; - return; -err: - diag(n, "error in regfree: %d", i); -} - -void -regsalloc(Node *n, Node *nn) -{ - cursafe = align(cursafe, nn->type, Aaut3, nil); - maxargsafe = maxround(maxargsafe, cursafe+curarg); - *n = *nodsafe; - n->xoffset = -(stkoff + cursafe); - n->type = nn->type; - n->etype = nn->type->etype; - n->lineno = nn->lineno; -} - -void -regaalloc1(Node *n, Node *nn) -{ - if(REGARG < 0) { - fatal(n, "regaalloc1 and REGARG<0"); - return; - } - nodreg(n, nn, REGARG); - reg[REGARG]++; - curarg = align(curarg, nn->type, Aarg1, nil); - curarg = align(curarg, nn->type, Aarg2, nil); - maxargsafe = maxround(maxargsafe, cursafe+curarg); -} - -void -regaalloc(Node *n, Node *nn) -{ - curarg = align(curarg, nn->type, Aarg1, nil); - *n = *nn; - n->op = OINDREG; - n->reg = REGSP; - n->xoffset = curarg + SZ_LONG; - n->complex = 0; - n->addable = 20; - curarg = align(curarg, nn->type, Aarg2, nil); - maxargsafe = maxround(maxargsafe, cursafe+curarg); -} - -void -regind(Node *n, Node *nn) -{ - - if(n->op != OREGISTER) { - diag(n, "regind not OREGISTER"); - return; - } - n->op = OINDREG; - n->type = nn->type; -} - -void -raddr(Node *n, Prog *p) -{ - Addr a; - - naddr(n, &a); - if(R0ISZERO && a.type == D_CONST && a.offset == 0) { - a.type = D_REG; - a.reg = 0; - } - if(a.type != D_REG && a.type != D_FREG) { - if(n) - diag(n, "bad in raddr: %O", n->op); - else - diag(n, "bad in raddr: <null>"); - p->reg = NREG; - } else - p->reg = a.reg; -} - -void -naddr(Node *n, Addr *a) -{ - int32 v; - - a->type = D_NONE; - if(n == Z) - return; - switch(n->op) { - default: - bad: - diag(n, "bad in naddr: %O", n->op); - break; - - case OREGISTER: - a->type = D_REG; - a->sym = nil; - a->reg = n->reg; - if(a->reg >= NREG) { - a->type = D_FREG; - a->reg -= NREG; - } - break; - - case OIND: - naddr(n->left, a); - if(a->type == D_REG) { - a->type = D_OREG; - break; - } - if(a->type == D_CONST) { - a->type = D_OREG; - break; - } - goto bad; - - case OINDREG: - a->type = D_OREG; - a->sym = nil; - a->offset = n->xoffset; - a->reg = n->reg; - break; - - case ONAME: - a->etype = n->etype; - a->type = D_OREG; - a->name = D_STATIC; - a->sym = linksym(n->sym); - a->offset = n->xoffset; - if(n->class == CSTATIC) - break; - if(n->class == CEXTERN || n->class == CGLOBL) { - a->name = D_EXTERN; - break; - } - if(n->class == CAUTO) { - a->name = D_AUTO; - break; - } - if(n->class == CPARAM) { - a->name = D_PARAM; - break; - } - goto bad; - - case OCONST: - a->sym = nil; - a->reg = NREG; - if(typefd[n->type->etype]) { - a->type = D_FCONST; - a->u.dval = n->fconst; - } else { - a->type = D_CONST; - a->offset = n->vconst; - } - break; - - case OADDR: - naddr(n->left, a); - if(a->type == D_OREG) { - a->type = D_CONST; - break; - } - goto bad; - - case OADD: - if(n->left->op == OCONST) { - naddr(n->left, a); - v = a->offset; - naddr(n->right, a); - } else { - naddr(n->right, a); - v = a->offset; - naddr(n->left, a); - } - a->offset += v; - break; - - } -} - -void -fop(int as, int f1, int f2, Node *t) -{ - Node nod1, nod2, nod3; - - nodreg(&nod1, t, NREG+f1); - nodreg(&nod2, t, NREG+f2); - regalloc(&nod3, t, t); - gopcode(as, &nod1, &nod2, &nod3); - gmove(&nod3, t); - regfree(&nod3); -} - -void -gmovm(Node *f, Node *t, int w) -{ - gins(AMOVM, f, t); - p->scond |= C_UBIT; - if(w) - p->scond |= C_WBIT; -} - -void -gmove(Node *f, Node *t) -{ - int ft, tt, a; - Node nod, nod1; - Prog *p1; - - ft = f->type->etype; - tt = t->type->etype; - - if(ft == TDOUBLE && f->op == OCONST) { - } - if(ft == TFLOAT && f->op == OCONST) { - } - - /* - * a load -- - * put it into a register then - * worry what to do with it. - */ - if(f->op == ONAME || f->op == OINDREG || f->op == OIND) { - switch(ft) { - default: - a = AMOVW; - break; - case TFLOAT: - a = AMOVF; - break; - case TDOUBLE: - a = AMOVD; - break; - case TCHAR: - a = AMOVBS; - break; - case TUCHAR: - a = AMOVBU; - break; - case TSHORT: - a = AMOVHS; - break; - case TUSHORT: - a = AMOVHU; - break; - } - if(typechlp[ft] && typeilp[tt]) - regalloc(&nod, t, t); - else - regalloc(&nod, f, t); - gins(a, f, &nod); - gmove(&nod, t); - regfree(&nod); - return; - } - - /* - * a store -- - * put it into a register then - * store it. - */ - if(t->op == ONAME || t->op == OINDREG || t->op == OIND) { - switch(tt) { - default: - a = AMOVW; - break; - case TUCHAR: - a = AMOVBU; - break; - case TCHAR: - a = AMOVBS; - break; - case TUSHORT: - a = AMOVHU; - break; - case TSHORT: - a = AMOVHS; - break; - case TFLOAT: - a = AMOVF; - break; - case TVLONG: - case TDOUBLE: - a = AMOVD; - break; - } - if(ft == tt) - regalloc(&nod, t, f); - else - regalloc(&nod, t, Z); - gmove(f, &nod); - gins(a, &nod, t); - regfree(&nod); - return; - } - - /* - * type x type cross table - */ - a = AGOK; - switch(ft) { - case TDOUBLE: - case TVLONG: - case TFLOAT: - switch(tt) { - case TDOUBLE: - case TVLONG: - a = AMOVD; - if(ft == TFLOAT) - a = AMOVFD; - break; - case TFLOAT: - a = AMOVDF; - if(ft == TFLOAT) - a = AMOVF; - break; - case TINT: - case TUINT: - case TLONG: - case TULONG: - case TIND: - a = AMOVDW; - if(ft == TFLOAT) - a = AMOVFW; - break; - case TSHORT: - case TUSHORT: - case TCHAR: - case TUCHAR: - a = AMOVDW; - if(ft == TFLOAT) - a = AMOVFW; - break; - } - break; - case TUINT: - case TULONG: - if(tt == TFLOAT || tt == TDOUBLE) { - // ugly and probably longer than necessary, - // but vfp has a single instruction for this, - // so hopefully it won't last long. - // - // tmp = f - // tmp1 = tmp & 0x80000000 - // tmp ^= tmp1 - // t = float(int32(tmp)) - // if(tmp1) - // t += 2147483648. - // - regalloc(&nod, f, Z); - regalloc(&nod1, f, Z); - gins(AMOVW, f, &nod); - gins(AMOVW, &nod, &nod1); - gins(AAND, nodconst(0x80000000), &nod1); - gins(AEOR, &nod1, &nod); - if(tt == TFLOAT) - gins(AMOVWF, &nod, t); - else - gins(AMOVWD, &nod, t); - gins(ACMP, nodconst(0), Z); - raddr(&nod1, p); - gins(ABEQ, Z, Z); - regfree(&nod); - regfree(&nod1); - p1 = p; - regalloc(&nod, t, Z); - gins(AMOVF, nodfconst(2147483648.), &nod); - gins(AADDF, &nod, t); - regfree(&nod); - patch(p1, pc); - return; - } - // fall through - - case TINT: - case TLONG: - case TIND: - switch(tt) { - case TDOUBLE: - gins(AMOVWD, f, t); - return; - case TFLOAT: - gins(AMOVWF, f, t); - return; - case TINT: - case TUINT: - case TLONG: - case TULONG: - case TIND: - case TSHORT: - case TUSHORT: - case TCHAR: - case TUCHAR: - a = AMOVW; - break; - } - break; - case TSHORT: - switch(tt) { - case TDOUBLE: - regalloc(&nod, f, Z); - gins(AMOVHS, f, &nod); - gins(AMOVWD, &nod, t); - regfree(&nod); - return; - case TFLOAT: - regalloc(&nod, f, Z); - gins(AMOVHS, f, &nod); - gins(AMOVWF, &nod, t); - regfree(&nod); - return; - case TUINT: - case TINT: - case TULONG: - case TLONG: - case TIND: - a = AMOVHS; - break; - case TSHORT: - case TUSHORT: - case TCHAR: - case TUCHAR: - a = AMOVW; - break; - } - break; - case TUSHORT: - switch(tt) { - case TDOUBLE: - regalloc(&nod, f, Z); - gins(AMOVHU, f, &nod); - gins(AMOVWD, &nod, t); - regfree(&nod); - return; - case TFLOAT: - regalloc(&nod, f, Z); - gins(AMOVHU, f, &nod); - gins(AMOVWF, &nod, t); - regfree(&nod); - return; - case TINT: - case TUINT: - case TLONG: - case TULONG: - case TIND: - a = AMOVHU; - break; - case TSHORT: - case TUSHORT: - case TCHAR: - case TUCHAR: - a = AMOVW; - break; - } - break; - case TCHAR: - switch(tt) { - case TDOUBLE: - regalloc(&nod, f, Z); - gins(AMOVBS, f, &nod); - gins(AMOVWD, &nod, t); - regfree(&nod); - return; - case TFLOAT: - regalloc(&nod, f, Z); - gins(AMOVBS, f, &nod); - gins(AMOVWF, &nod, t); - regfree(&nod); - return; - case TINT: - case TUINT: - case TLONG: - case TULONG: - case TIND: - case TSHORT: - case TUSHORT: - a = AMOVBS; - break; - case TCHAR: - case TUCHAR: - a = AMOVW; - break; - } - break; - case TUCHAR: - switch(tt) { - case TDOUBLE: - regalloc(&nod, f, Z); - gins(AMOVBU, f, &nod); - gins(AMOVWD, &nod, t); - regfree(&nod); - return; - case TFLOAT: - regalloc(&nod, f, Z); - gins(AMOVBU, f, &nod); - gins(AMOVWF, &nod, t); - regfree(&nod); - return; - case TINT: - case TUINT: - case TLONG: - case TULONG: - case TIND: - case TSHORT: - case TUSHORT: - a = AMOVBU; - break; - case TCHAR: - case TUCHAR: - a = AMOVW; - break; - } - break; - } - if(a == AGOK) - diag(Z, "bad opcode in gmove %T -> %T", f->type, t->type); - if(a == AMOVW || a == AMOVF || a == AMOVD) - if(samaddr(f, t)) - return; - gins(a, f, t); -} - -void -gmover(Node *f, Node *t) -{ - int ft, tt, a; - - ft = f->type->etype; - tt = t->type->etype; - a = AGOK; - if(typechlp[ft] && typechlp[tt] && ewidth[ft] >= ewidth[tt]){ - switch(tt){ - case TSHORT: - a = AMOVHS; - break; - case TUSHORT: - a = AMOVHU; - break; - case TCHAR: - a = AMOVBS; - break; - case TUCHAR: - a = AMOVBU; - break; - } - } - if(a == AGOK) - gmove(f, t); - else - gins(a, f, t); -} - -void -gins(int a, Node *f, Node *t) -{ - - nextpc(); - p->as = a; - if(f != Z) - naddr(f, &p->from); - if(t != Z) - naddr(t, &p->to); - if(debug['g']) - print("%P\n", p); -} - -void -gopcode(int o, Node *f1, Node *f2, Node *t) -{ - int a, et; - Addr ta; - - et = TLONG; - if(f1 != Z && f1->type != T) - et = f1->type->etype; - a = AGOK; - switch(o) { - case OAS: - gmove(f1, t); - return; - - case OASADD: - case OADD: - a = AADD; - if(et == TFLOAT) - a = AADDF; - else - if(et == TDOUBLE || et == TVLONG) - a = AADDD; - break; - - case OASSUB: - case OSUB: - if(f2 && f2->op == OCONST) { - Node *t = f1; - f1 = f2; - f2 = t; - a = ARSB; - } else - a = ASUB; - if(et == TFLOAT) - a = ASUBF; - else - if(et == TDOUBLE || et == TVLONG) - a = ASUBD; - break; - - case OASOR: - case OOR: - a = AORR; - break; - - case OASAND: - case OAND: - a = AAND; - break; - - case OASXOR: - case OXOR: - a = AEOR; - break; - - case OASLSHR: - case OLSHR: - a = ASRL; - break; - - case OASASHR: - case OASHR: - a = ASRA; - break; - - case OASASHL: - case OASHL: - a = ASLL; - break; - - case OFUNC: - a = ABL; - break; - - case OASMUL: - case OMUL: - a = AMUL; - if(et == TFLOAT) - a = AMULF; - else - if(et == TDOUBLE || et == TVLONG) - a = AMULD; - break; - - case OASDIV: - case ODIV: - a = ADIV; - if(et == TFLOAT) - a = ADIVF; - else - if(et == TDOUBLE || et == TVLONG) - a = ADIVD; - break; - - case OASMOD: - case OMOD: - a = AMOD; - break; - - case OASLMUL: - case OLMUL: - a = AMULU; - break; - - case OASLMOD: - case OLMOD: - a = AMODU; - break; - - case OASLDIV: - case OLDIV: - a = ADIVU; - break; - - case OCASE: - case OEQ: - case ONE: - case OLT: - case OLE: - case OGE: - case OGT: - case OLO: - case OLS: - case OHS: - case OHI: - a = ACMP; - if(et == TFLOAT) - a = ACMPF; - else - if(et == TDOUBLE || et == TVLONG) - a = ACMPD; - nextpc(); - p->as = a; - naddr(f1, &p->from); - if(a == ACMP && f1->op == OCONST && p->from.offset < 0) { - p->as = ACMN; - p->from.offset = -p->from.offset; - } - raddr(f2, p); - switch(o) { - case OEQ: - a = ABEQ; - break; - case ONE: - a = ABNE; - break; - case OLT: - a = ABLT; - break; - case OLE: - a = ABLE; - break; - case OGE: - a = ABGE; - break; - case OGT: - a = ABGT; - break; - case OLO: - a = ABLO; - break; - case OLS: - a = ABLS; - break; - case OHS: - a = ABHS; - break; - case OHI: - a = ABHI; - break; - case OCASE: - nextpc(); - p->as = ACASE; - p->scond = 0x9; - naddr(f2, &p->from); - a = ABHI; - break; - } - f1 = Z; - f2 = Z; - break; - } - if(a == AGOK) - diag(Z, "bad in gopcode %O", o); - nextpc(); - p->as = a; - if(f1 != Z) - naddr(f1, &p->from); - if(f2 != Z) { - naddr(f2, &ta); - p->reg = ta.reg; - } - if(t != Z) - naddr(t, &p->to); - if(debug['g']) - print("%P\n", p); -} - -int -samaddr(Node *f, Node *t) -{ - - if(f->op != t->op) - return 0; - switch(f->op) { - - case OREGISTER: - if(f->reg != t->reg) - break; - return 1; - } - return 0; -} - -void -gbranch(int o) -{ - int a; - - a = AGOK; - switch(o) { - case ORETURN: - a = ARET; - break; - case OGOTO: - a = AB; - break; - } - nextpc(); - if(a == AGOK) { - diag(Z, "bad in gbranch %O", o); - nextpc(); - } - p->as = a; -} - -void -patch(Prog *op, int32 pc) -{ - - op->to.offset = pc; - op->to.type = D_BRANCH; -} - -void -gpseudo(int a, Sym *s, Node *n) -{ - nextpc(); - p->as = a; - p->from.type = D_OREG; - p->from.sym = linksym(s); - p->from.name = D_EXTERN; - - switch(a) { - case ATEXT: - p->reg = textflag; - textflag = 0; - break; - case AGLOBL: - p->reg = s->dataflag; - break; - } - - if(s->class == CSTATIC) - p->from.name = D_STATIC; - naddr(n, &p->to); - if(a == ADATA || a == AGLOBL) - pc--; -} - -void -gpcdata(int index, int value) -{ - Node n1; - - n1 = *nodconst(index); - gins(APCDATA, &n1, nodconst(value)); -} - -void -gprefetch(Node *n) -{ - Node n1; - - regalloc(&n1, n, Z); - gmove(n, &n1); - n1.op = OINDREG; - gins(APLD, &n1, Z); - regfree(&n1); -} - -int -sconst(Node *n) -{ - vlong vv; - - if(n->op == OCONST) { - if(!typefd[n->type->etype]) { - vv = n->vconst; - if(vv >= (vlong)(-32766) && vv < (vlong)32766) - return 1; - /* - * should be specialised for constant values which will - * fit in different instructionsl; for now, let 5l - * sort it out - */ - return 1; - } - } - return 0; -} - -int -sval(int32 v) -{ - int i; - - for(i=0; i<16; i++) { - if((v & ~0xff) == 0) - return 1; - if((~v & ~0xff) == 0) - return 1; - v = (v<<2) | ((uint32)v>>30); - } - return 0; -} - -int32 -exreg(Type *t) -{ - int32 o; - - if(typechlp[t->etype]) { - if(exregoffset <= REGEXT-4) - return 0; - o = exregoffset; - exregoffset--; - return o; - } - if(typefd[t->etype]) { - if(exfregoffset <= NFREG-1) - return 0; - o = exfregoffset + NREG; - exfregoffset--; - return o; - } - return 0; -} - -schar ewidth[NTYPE] = -{ - -1, /* [TXXX] */ - SZ_CHAR, /* [TCHAR] */ - SZ_CHAR, /* [TUCHAR] */ - SZ_SHORT, /* [TSHORT] */ - SZ_SHORT, /* [TUSHORT] */ - SZ_INT, /* [TINT] */ - SZ_INT, /* [TUINT] */ - SZ_LONG, /* [TLONG] */ - SZ_LONG, /* [TULONG] */ - SZ_VLONG, /* [TVLONG] */ - SZ_VLONG, /* [TUVLONG] */ - SZ_FLOAT, /* [TFLOAT] */ - SZ_DOUBLE, /* [TDOUBLE] */ - SZ_IND, /* [TIND] */ - 0, /* [TFUNC] */ - -1, /* [TARRAY] */ - 0, /* [TVOID] */ - -1, /* [TSTRUCT] */ - -1, /* [TUNION] */ - SZ_INT, /* [TENUM] */ -}; - -int32 ncast[NTYPE] = -{ - 0, /* [TXXX] */ - BCHAR|BUCHAR, /* [TCHAR] */ - BCHAR|BUCHAR, /* [TUCHAR] */ - BSHORT|BUSHORT, /* [TSHORT] */ - BSHORT|BUSHORT, /* [TUSHORT] */ - BINT|BUINT|BLONG|BULONG|BIND, /* [TINT] */ - BINT|BUINT|BLONG|BULONG|BIND, /* [TUINT] */ - BINT|BUINT|BLONG|BULONG|BIND, /* [TLONG] */ - BINT|BUINT|BLONG|BULONG|BIND, /* [TULONG] */ - BVLONG|BUVLONG, /* [TVLONG] */ - BVLONG|BUVLONG, /* [TUVLONG] */ - BFLOAT, /* [TFLOAT] */ - BDOUBLE, /* [TDOUBLE] */ - BLONG|BULONG|BIND, /* [TIND] */ - 0, /* [TFUNC] */ - 0, /* [TARRAY] */ - 0, /* [TVOID] */ - BSTRUCT, /* [TSTRUCT] */ - BUNION, /* [TUNION] */ - 0, /* [TENUM] */ -}; diff --git a/src/cmd/5g/reg.c b/src/cmd/5g/reg.c index 86a1f7efb..56ea7826e 100644 --- a/src/cmd/5g/reg.c +++ b/src/cmd/5g/reg.c @@ -199,7 +199,7 @@ regopt(Prog *firstp) proginfo(&info, p); // Avoid making variables for direct-called functions. - if(p->as == ABL && p->to.type == D_EXTERN) + if(p->as == ABL && p->to.name == D_EXTERN) continue; bit = mkvar(r, &p->from); diff --git a/src/cmd/6c/Makefile b/src/cmd/6c/Makefile deleted file mode 100644 index 3f528d751..000000000 --- a/src/cmd/6c/Makefile +++ /dev/null @@ -1,5 +0,0 @@ -# Copyright 2012 The Go Authors. All rights reserved. -# Use of this source code is governed by a BSD-style -# license that can be found in the LICENSE file. - -include ../../Make.dist diff --git a/src/cmd/6c/cgen.c b/src/cmd/6c/cgen.c deleted file mode 100644 index 68dd7bb5f..000000000 --- a/src/cmd/6c/cgen.c +++ /dev/null @@ -1,2046 +0,0 @@ -// Inferno utils/6c/cgen.c -// http://code.google.com/p/inferno-os/source/browse/utils/6c/cgen.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" -#include "../../runtime/funcdata.h" - -/* ,x/^(print|prtree)\(/i/\/\/ */ -int castup(Type*, Type*); -int vaddr(Node *n, int a); - -void -cgen(Node *n, Node *nn) -{ - Node *l, *r, *t; - Prog *p1; - Node nod, nod1, nod2, nod3, nod4; - int o, hardleft; - int32 v, curs; - vlong c; - - if(debug['g']) { - prtree(nn, "cgen lhs"); - prtree(n, "cgen"); - } - if(n == Z || n->type == T) - return; - if(typesu[n->type->etype] && (n->op != OFUNC || nn != Z)) { - sugen(n, nn, n->type->width); - return; - } - l = n->left; - r = n->right; - o = n->op; - - if(n->op == OEXREG || (nn != Z && nn->op == OEXREG)) { - gmove(n, nn); - return; - } - - if(n->addable >= INDEXED) { - if(nn == Z) { - switch(o) { - default: - nullwarn(Z, Z); - break; - case OINDEX: - nullwarn(l, r); - break; - } - return; - } - gmove(n, nn); - return; - } - curs = cursafe; - - if(l->complex >= FNX) - if(r != Z && r->complex >= FNX) - switch(o) { - default: - if(cond(o) && typesu[l->type->etype]) - break; - - regret(&nod, r, 0, 0); - cgen(r, &nod); - - regsalloc(&nod1, r); - gmove(&nod, &nod1); - - regfree(&nod); - nod = *n; - nod.right = &nod1; - - cgen(&nod, nn); - return; - - case OFUNC: - case OCOMMA: - case OANDAND: - case OOROR: - case OCOND: - case ODOT: - break; - } - - hardleft = l->addable < INDEXED || l->complex >= FNX; - switch(o) { - default: - diag(n, "unknown op in cgen: %O", o); - break; - - case ONEG: - case OCOM: - if(nn == Z) { - nullwarn(l, Z); - break; - } - regalloc(&nod, l, nn); - cgen(l, &nod); - gopcode(o, n->type, Z, &nod); - gmove(&nod, nn); - regfree(&nod); - break; - - case OAS: - if(l->op == OBIT) - goto bitas; - if(!hardleft) { - if(nn != Z || r->addable < INDEXED || hardconst(r)) { - if(r->complex >= FNX && nn == Z) - regret(&nod, r, 0, 0); - else - regalloc(&nod, r, nn); - cgen(r, &nod); - gmove(&nod, l); - if(nn != Z) - gmove(&nod, nn); - regfree(&nod); - } else - gmove(r, l); - break; - } - if(l->complex >= r->complex) { - if(l->op == OINDEX && immconst(r)) { - gmove(r, l); - break; - } - reglcgen(&nod1, l, Z); - if(r->addable >= INDEXED && !hardconst(r)) { - gmove(r, &nod1); - if(nn != Z) - gmove(r, nn); - regfree(&nod1); - break; - } - regalloc(&nod, r, nn); - cgen(r, &nod); - } else { - regalloc(&nod, r, nn); - cgen(r, &nod); - reglcgen(&nod1, l, Z); - } - gmove(&nod, &nod1); - regfree(&nod); - regfree(&nod1); - break; - - bitas: - n = l->left; - regalloc(&nod, r, nn); - if(l->complex >= r->complex) { - reglcgen(&nod1, n, Z); - cgen(r, &nod); - } else { - cgen(r, &nod); - reglcgen(&nod1, n, Z); - } - regalloc(&nod2, n, Z); - gmove(&nod1, &nod2); - bitstore(l, &nod, &nod1, &nod2, nn); - break; - - case OBIT: - if(nn == Z) { - nullwarn(l, Z); - break; - } - bitload(n, &nod, Z, Z, nn); - gmove(&nod, nn); - regfree(&nod); - break; - - case OLSHR: - case OASHL: - case OASHR: - if(nn == Z) { - nullwarn(l, r); - break; - } - if(r->op == OCONST) { - if(r->vconst == 0) { - cgen(l, nn); - break; - } - regalloc(&nod, l, nn); - cgen(l, &nod); - if(o == OASHL && r->vconst == 1) - gopcode(OADD, n->type, &nod, &nod); - else - gopcode(o, n->type, r, &nod); - gmove(&nod, nn); - regfree(&nod); - break; - } - - /* - * get nod to be D_CX - */ - if(nodreg(&nod, nn, D_CX)) { - regsalloc(&nod1, n); - gmove(&nod, &nod1); - cgen(n, &nod); /* probably a bug */ - gmove(&nod, nn); - gmove(&nod1, &nod); - break; - } - reg[D_CX]++; - if(nn->op == OREGISTER && nn->reg == D_CX) - regalloc(&nod1, l, Z); - else - regalloc(&nod1, l, nn); - if(r->complex >= l->complex) { - cgen(r, &nod); - cgen(l, &nod1); - } else { - cgen(l, &nod1); - cgen(r, &nod); - } - gopcode(o, n->type, &nod, &nod1); - gmove(&nod1, nn); - regfree(&nod); - regfree(&nod1); - break; - - case OADD: - case OSUB: - case OOR: - case OXOR: - case OAND: - if(nn == Z) { - nullwarn(l, r); - break; - } - if(typefd[n->type->etype]) - goto fop; - if(r->op == OCONST) { - if(r->vconst == 0 && o != OAND) { - cgen(l, nn); - break; - } - } - if(n->op == OOR && l->op == OASHL && r->op == OLSHR - && l->right->op == OCONST && r->right->op == OCONST - && l->left->op == ONAME && r->left->op == ONAME - && l->left->sym == r->left->sym - && l->right->vconst + r->right->vconst == 8 * l->left->type->width) { - regalloc(&nod, l->left, nn); - cgen(l->left, &nod); - gopcode(OROTL, n->type, l->right, &nod); - gmove(&nod, nn); - regfree(&nod); - break; - } - if(n->op == OADD && l->op == OASHL && l->right->op == OCONST - && (r->op != OCONST || r->vconst < -128 || r->vconst > 127)) { - c = l->right->vconst; - if(c > 0 && c <= 3) { - if(l->left->complex >= r->complex) { - regalloc(&nod, l->left, nn); - cgen(l->left, &nod); - if(r->addable < INDEXED) { - regalloc(&nod1, r, Z); - cgen(r, &nod1); - genmuladd(&nod, &nod, 1 << c, &nod1); - regfree(&nod1); - } - else - genmuladd(&nod, &nod, 1 << c, r); - } - else { - regalloc(&nod, r, nn); - cgen(r, &nod); - regalloc(&nod1, l->left, Z); - cgen(l->left, &nod1); - genmuladd(&nod, &nod1, 1 << c, &nod); - regfree(&nod1); - } - gmove(&nod, nn); - regfree(&nod); - break; - } - } - if(r->addable >= INDEXED && !hardconst(r)) { - regalloc(&nod, l, nn); - cgen(l, &nod); - gopcode(o, n->type, r, &nod); - gmove(&nod, nn); - regfree(&nod); - break; - } - if(l->complex >= r->complex) { - regalloc(&nod, l, nn); - cgen(l, &nod); - regalloc(&nod1, r, Z); - cgen(r, &nod1); - gopcode(o, n->type, &nod1, &nod); - } else { - regalloc(&nod1, r, nn); - cgen(r, &nod1); - regalloc(&nod, l, Z); - cgen(l, &nod); - gopcode(o, n->type, &nod1, &nod); - } - gmove(&nod, nn); - regfree(&nod); - regfree(&nod1); - break; - - case OLMOD: - case OMOD: - case OLMUL: - case OLDIV: - case OMUL: - case ODIV: - if(nn == Z) { - nullwarn(l, r); - break; - } - if(typefd[n->type->etype]) - goto fop; - if(r->op == OCONST && typechl[n->type->etype]) { /* TO DO */ - SET(v); - switch(o) { - case ODIV: - case OMOD: - c = r->vconst; - if(c < 0) - c = -c; - v = xlog2(c); - if(v < 0) - break; - /* fall thru */ - case OMUL: - case OLMUL: - regalloc(&nod, l, nn); - cgen(l, &nod); - switch(o) { - case OMUL: - case OLMUL: - mulgen(n->type, r, &nod); - break; - case ODIV: - sdiv2(r->vconst, v, l, &nod); - break; - case OMOD: - smod2(r->vconst, v, l, &nod); - break; - } - gmove(&nod, nn); - regfree(&nod); - goto done; - case OLDIV: - c = r->vconst; - if((c & 0x80000000) == 0) - break; - regalloc(&nod1, l, Z); - cgen(l, &nod1); - regalloc(&nod, l, nn); - zeroregm(&nod); - gins(ACMPL, &nod1, nodconst(c)); - gins(ASBBL, nodconst(-1), &nod); - regfree(&nod1); - gmove(&nod, nn); - regfree(&nod); - goto done; - } - } - - if(o == OMUL || o == OLMUL) { - if(l->addable >= INDEXED) { - t = l; - l = r; - r = t; - } - reg[D_DX]++; // for gopcode case OMUL - regalloc(&nod, l, nn); - cgen(l, &nod); - if(r->addable < INDEXED || hardconst(r)) { - regalloc(&nod1, r, Z); - cgen(r, &nod1); - gopcode(OMUL, n->type, &nod1, &nod); - regfree(&nod1); - }else - gopcode(OMUL, n->type, r, &nod); /* addressible */ - gmove(&nod, nn); - regfree(&nod); - reg[D_DX]--; - break; - } - - /* - * get nod to be D_AX - * get nod1 to be D_DX - */ - if(nodreg(&nod, nn, D_AX)) { - regsalloc(&nod2, n); - gmove(&nod, &nod2); - v = reg[D_AX]; - reg[D_AX] = 0; - - if(isreg(l, D_AX)) { - nod3 = *n; - nod3.left = &nod2; - cgen(&nod3, nn); - } else - if(isreg(r, D_AX)) { - nod3 = *n; - nod3.right = &nod2; - cgen(&nod3, nn); - } else - cgen(n, nn); - - gmove(&nod2, &nod); - reg[D_AX] = v; - break; - } - if(nodreg(&nod1, nn, D_DX)) { - regsalloc(&nod2, n); - gmove(&nod1, &nod2); - v = reg[D_DX]; - reg[D_DX] = 0; - - if(isreg(l, D_DX)) { - nod3 = *n; - nod3.left = &nod2; - cgen(&nod3, nn); - } else - if(isreg(r, D_DX)) { - nod3 = *n; - nod3.right = &nod2; - cgen(&nod3, nn); - } else - cgen(n, nn); - - gmove(&nod2, &nod1); - reg[D_DX] = v; - break; - } - reg[D_AX]++; - - if(r->op == OCONST && (o == ODIV || o == OLDIV) && immconst(r) && typechl[r->type->etype]) { - reg[D_DX]++; - if(l->addable < INDEXED) { - regalloc(&nod2, l, Z); - cgen(l, &nod2); - l = &nod2; - } - if(o == ODIV) - sdivgen(l, r, &nod, &nod1); - else - udivgen(l, r, &nod, &nod1); - gmove(&nod1, nn); - if(l == &nod2) - regfree(l); - goto freeaxdx; - } - - if(l->complex >= r->complex) { - cgen(l, &nod); - reg[D_DX]++; - if(o == ODIV || o == OMOD) - gins(typechl[l->type->etype]? ACDQ: ACQO, Z, Z); - if(o == OLDIV || o == OLMOD) - zeroregm(&nod1); - if(r->addable < INDEXED || r->op == OCONST) { - regsalloc(&nod3, r); - cgen(r, &nod3); - gopcode(o, n->type, &nod3, Z); - } else - gopcode(o, n->type, r, Z); - } else { - regsalloc(&nod3, r); - cgen(r, &nod3); - cgen(l, &nod); - reg[D_DX]++; - if(o == ODIV || o == OMOD) - gins(typechl[l->type->etype]? ACDQ: ACQO, Z, Z); - if(o == OLDIV || o == OLMOD) - zeroregm(&nod1); - gopcode(o, n->type, &nod3, Z); - } - if(o == OMOD || o == OLMOD) - gmove(&nod1, nn); - else - gmove(&nod, nn); - freeaxdx: - regfree(&nod); - regfree(&nod1); - break; - - case OASLSHR: - case OASASHL: - case OASASHR: - if(r->op == OCONST) - goto asand; - if(l->op == OBIT) - goto asbitop; - if(typefd[n->type->etype]) - goto asand; /* can this happen? */ - - /* - * get nod to be D_CX - */ - if(nodreg(&nod, nn, D_CX)) { - regsalloc(&nod1, n); - gmove(&nod, &nod1); - cgen(n, &nod); - if(nn != Z) - gmove(&nod, nn); - gmove(&nod1, &nod); - break; - } - reg[D_CX]++; - - if(r->complex >= l->complex) { - cgen(r, &nod); - if(hardleft) - reglcgen(&nod1, l, Z); - else - nod1 = *l; - } else { - if(hardleft) - reglcgen(&nod1, l, Z); - else - nod1 = *l; - cgen(r, &nod); - } - - gopcode(o, l->type, &nod, &nod1); - regfree(&nod); - if(nn != Z) - gmove(&nod1, nn); - if(hardleft) - regfree(&nod1); - break; - - case OASAND: - case OASADD: - case OASSUB: - case OASXOR: - case OASOR: - asand: - if(l->op == OBIT) - goto asbitop; - if(typefd[l->type->etype] || typefd[r->type->etype]) - goto asfop; - if(l->complex >= r->complex) { - if(hardleft) - reglcgen(&nod, l, Z); - else - nod = *l; - if(!immconst(r)) { - regalloc(&nod1, r, nn); - cgen(r, &nod1); - gopcode(o, l->type, &nod1, &nod); - regfree(&nod1); - } else - gopcode(o, l->type, r, &nod); - } else { - regalloc(&nod1, r, nn); - cgen(r, &nod1); - if(hardleft) - reglcgen(&nod, l, Z); - else - nod = *l; - gopcode(o, l->type, &nod1, &nod); - regfree(&nod1); - } - if(nn != Z) - gmove(&nod, nn); - if(hardleft) - regfree(&nod); - break; - - asfop: - if(l->complex >= r->complex) { - if(hardleft) - reglcgen(&nod, l, Z); - else - nod = *l; - if(r->addable < INDEXED){ - regalloc(&nod1, r, nn); - cgen(r, &nod1); - }else - nod1 = *r; - regalloc(&nod2, r, Z); - gmove(&nod, &nod2); - gopcode(o, r->type, &nod1, &nod2); - gmove(&nod2, &nod); - regfree(&nod2); - if(r->addable < INDEXED) - regfree(&nod1); - } else { - regalloc(&nod1, r, nn); - cgen(r, &nod1); - if(hardleft) - reglcgen(&nod, l, Z); - else - nod = *l; - if(o != OASMUL && o != OASADD) { - regalloc(&nod2, r, Z); - gmove(&nod, &nod2); - gopcode(o, r->type, &nod1, &nod2); - regfree(&nod1); - gmove(&nod2, &nod); - regfree(&nod2); - } else { - gopcode(o, r->type, &nod, &nod1); - gmove(&nod1, &nod); - regfree(&nod1); - } - } - if(nn != Z) - gmove(&nod, nn); - if(hardleft) - regfree(&nod); - break; - - case OASLMUL: - case OASLDIV: - case OASLMOD: - case OASMUL: - case OASDIV: - case OASMOD: - if(l->op == OBIT) - goto asbitop; - if(typefd[n->type->etype] || typefd[r->type->etype]) - goto asfop; - if(r->op == OCONST && typechl[n->type->etype]) { - SET(v); - switch(o) { - case OASDIV: - case OASMOD: - c = r->vconst; - if(c < 0) - c = -c; - v = xlog2(c); - if(v < 0) - break; - /* fall thru */ - case OASMUL: - case OASLMUL: - if(hardleft) - reglcgen(&nod2, l, Z); - else - nod2 = *l; - regalloc(&nod, l, nn); - cgen(&nod2, &nod); - switch(o) { - case OASMUL: - case OASLMUL: - mulgen(n->type, r, &nod); - break; - case OASDIV: - sdiv2(r->vconst, v, l, &nod); - break; - case OASMOD: - smod2(r->vconst, v, l, &nod); - break; - } - havev: - gmove(&nod, &nod2); - if(nn != Z) - gmove(&nod, nn); - if(hardleft) - regfree(&nod2); - regfree(&nod); - goto done; - case OASLDIV: - c = r->vconst; - if((c & 0x80000000) == 0) - break; - if(hardleft) - reglcgen(&nod2, l, Z); - else - nod2 = *l; - regalloc(&nod1, l, nn); - cgen(&nod2, &nod1); - regalloc(&nod, l, nn); - zeroregm(&nod); - gins(ACMPL, &nod1, nodconst(c)); - gins(ASBBL, nodconst(-1), &nod); - regfree(&nod1); - goto havev; - } - } - - if(o == OASMUL) { - /* should favour AX */ - regalloc(&nod, l, nn); - if(r->complex >= FNX) { - regalloc(&nod1, r, Z); - cgen(r, &nod1); - r = &nod1; - } - if(hardleft) - reglcgen(&nod2, l, Z); - else - nod2 = *l; - cgen(&nod2, &nod); - if(r->addable < INDEXED || hardconst(r)) { - if(r->complex < FNX) { - regalloc(&nod1, r, Z); - cgen(r, &nod1); - } - gopcode(OASMUL, n->type, &nod1, &nod); - regfree(&nod1); - } - else - gopcode(OASMUL, n->type, r, &nod); - if(r == &nod1) - regfree(r); - gmove(&nod, &nod2); - if(nn != Z) - gmove(&nod, nn); - regfree(&nod); - if(hardleft) - regfree(&nod2); - break; - } - - /* - * get nod to be D_AX - * get nod1 to be D_DX - */ - if(nodreg(&nod, nn, D_AX)) { - regsalloc(&nod2, n); - gmove(&nod, &nod2); - v = reg[D_AX]; - reg[D_AX] = 0; - - if(isreg(l, D_AX)) { - nod3 = *n; - nod3.left = &nod2; - cgen(&nod3, nn); - } else - if(isreg(r, D_AX)) { - nod3 = *n; - nod3.right = &nod2; - cgen(&nod3, nn); - } else - cgen(n, nn); - - gmove(&nod2, &nod); - reg[D_AX] = v; - break; - } - if(nodreg(&nod1, nn, D_DX)) { - regsalloc(&nod2, n); - gmove(&nod1, &nod2); - v = reg[D_DX]; - reg[D_DX] = 0; - - if(isreg(l, D_DX)) { - nod3 = *n; - nod3.left = &nod2; - cgen(&nod3, nn); - } else - if(isreg(r, D_DX)) { - nod3 = *n; - nod3.right = &nod2; - cgen(&nod3, nn); - } else - cgen(n, nn); - - gmove(&nod2, &nod1); - reg[D_DX] = v; - break; - } - reg[D_AX]++; - reg[D_DX]++; - - if(l->complex >= r->complex) { - if(hardleft) - reglcgen(&nod2, l, Z); - else - nod2 = *l; - cgen(&nod2, &nod); - if(r->op == OCONST && typechl[r->type->etype]) { - switch(o) { - case OASDIV: - sdivgen(&nod2, r, &nod, &nod1); - goto divdone; - case OASLDIV: - udivgen(&nod2, r, &nod, &nod1); - divdone: - gmove(&nod1, &nod2); - if(nn != Z) - gmove(&nod1, nn); - goto freelxaxdx; - } - } - if(o == OASDIV || o == OASMOD) - gins(typechl[l->type->etype]? ACDQ: ACQO, Z, Z); - if(o == OASLDIV || o == OASLMOD) - zeroregm(&nod1); - if(r->addable < INDEXED || r->op == OCONST || - !typeil[r->type->etype]) { - regalloc(&nod3, r, Z); - cgen(r, &nod3); - gopcode(o, l->type, &nod3, Z); - regfree(&nod3); - } else - gopcode(o, n->type, r, Z); - } else { - regalloc(&nod3, r, Z); - cgen(r, &nod3); - if(hardleft) - reglcgen(&nod2, l, Z); - else - nod2 = *l; - cgen(&nod2, &nod); - if(o == OASDIV || o == OASMOD) - gins(typechl[l->type->etype]? ACDQ: ACQO, Z, Z); - if(o == OASLDIV || o == OASLMOD) - zeroregm(&nod1); - gopcode(o, l->type, &nod3, Z); - regfree(&nod3); - } - if(o == OASMOD || o == OASLMOD) { - gmove(&nod1, &nod2); - if(nn != Z) - gmove(&nod1, nn); - } else { - gmove(&nod, &nod2); - if(nn != Z) - gmove(&nod, nn); - } - freelxaxdx: - if(hardleft) - regfree(&nod2); - regfree(&nod); - regfree(&nod1); - break; - - fop: - if(l->complex >= r->complex) { - regalloc(&nod, l, nn); - cgen(l, &nod); - if(r->addable < INDEXED) { - regalloc(&nod1, r, Z); - cgen(r, &nod1); - gopcode(o, n->type, &nod1, &nod); - regfree(&nod1); - } else - gopcode(o, n->type, r, &nod); - } else { - /* TO DO: could do better with r->addable >= INDEXED */ - regalloc(&nod1, r, Z); - cgen(r, &nod1); - regalloc(&nod, l, nn); - cgen(l, &nod); - gopcode(o, n->type, &nod1, &nod); - regfree(&nod1); - } - gmove(&nod, nn); - regfree(&nod); - break; - - asbitop: - regalloc(&nod4, n, nn); - if(l->complex >= r->complex) { - bitload(l, &nod, &nod1, &nod2, &nod4); - regalloc(&nod3, r, Z); - cgen(r, &nod3); - } else { - regalloc(&nod3, r, Z); - cgen(r, &nod3); - bitload(l, &nod, &nod1, &nod2, &nod4); - } - gmove(&nod, &nod4); - - { /* TO DO: check floating point source */ - Node onod; - - /* incredible grot ... */ - onod = nod3; - onod.op = o; - onod.complex = 2; - onod.addable = 0; - onod.type = tfield; - onod.left = &nod4; - onod.right = &nod3; - cgen(&onod, Z); - } - regfree(&nod3); - gmove(&nod4, &nod); - regfree(&nod4); - bitstore(l, &nod, &nod1, &nod2, nn); - break; - - case OADDR: - if(nn == Z) { - nullwarn(l, Z); - break; - } - lcgen(l, nn); - break; - - case OFUNC: - if(l->complex >= FNX) { - if(l->op != OIND) - diag(n, "bad function call"); - - regret(&nod, l->left, 0, 0); - cgen(l->left, &nod); - regsalloc(&nod1, l->left); - gmove(&nod, &nod1); - regfree(&nod); - - nod = *n; - nod.left = &nod2; - nod2 = *l; - nod2.left = &nod1; - nod2.complex = 1; - cgen(&nod, nn); - - return; - } - gargs(r, &nod, &nod1); - if(l->addable < INDEXED) { - reglcgen(&nod, l, nn); - nod.op = OREGISTER; - gopcode(OFUNC, n->type, Z, &nod); - regfree(&nod); - } else - gopcode(OFUNC, n->type, Z, l); - if(REGARG >= 0 && reg[REGARG]) - reg[REGARG]--; - regret(&nod, n, l->type, 1); // update maxarg if nothing else - if(nn != Z) - gmove(&nod, nn); - if(nod.op == OREGISTER) - regfree(&nod); - break; - - case OIND: - if(nn == Z) { - nullwarn(l, Z); - break; - } - regialloc(&nod, n, nn); - r = l; - while(r->op == OADD) - r = r->right; - if(sconst(r)) { - v = r->vconst; - r->vconst = 0; - cgen(l, &nod); - nod.xoffset += v; - r->vconst = v; - } else - cgen(l, &nod); - regind(&nod, n); - gmove(&nod, nn); - regfree(&nod); - break; - - case OEQ: - case ONE: - case OLE: - case OLT: - case OGE: - case OGT: - case OLO: - case OLS: - case OHI: - case OHS: - if(nn == Z) { - nullwarn(l, r); - break; - } - boolgen(n, 1, nn); - break; - - case OANDAND: - case OOROR: - boolgen(n, 1, nn); - if(nn == Z) - patch(p, pc); - break; - - case ONOT: - if(nn == Z) { - nullwarn(l, Z); - break; - } - boolgen(n, 1, nn); - break; - - case OCOMMA: - cgen(l, Z); - cgen(r, nn); - break; - - case OCAST: - if(nn == Z) { - nullwarn(l, Z); - break; - } - /* - * convert from types l->n->nn - */ - if(nocast(l->type, n->type) && nocast(n->type, nn->type)) { - /* both null, gen l->nn */ - cgen(l, nn); - break; - } - if(ewidth[n->type->etype] < ewidth[l->type->etype]){ - if(l->type->etype == TIND && typechlp[n->type->etype]) - warn(n, "conversion of pointer to shorter integer"); - }else if(0){ - if(nocast(n->type, nn->type) || castup(n->type, nn->type)){ - if(typefd[l->type->etype] != typefd[nn->type->etype]) - regalloc(&nod, l, nn); - else - regalloc(&nod, nn, nn); - cgen(l, &nod); - gmove(&nod, nn); - regfree(&nod); - break; - } - } - regalloc(&nod, l, nn); - cgen(l, &nod); - regalloc(&nod1, n, &nod); - gmove(&nod, &nod1); - gmove(&nod1, nn); - regfree(&nod1); - regfree(&nod); - break; - - case ODOT: - sugen(l, nodrat, l->type->width); - if(nn == Z) - break; - warn(n, "non-interruptable temporary"); - nod = *nodrat; - if(!r || r->op != OCONST) { - diag(n, "DOT and no offset"); - break; - } - nod.xoffset += (int32)r->vconst; - nod.type = n->type; - cgen(&nod, nn); - break; - - case OCOND: - bcgen(l, 1); - p1 = p; - cgen(r->left, nn); - gbranch(OGOTO); - patch(p1, pc); - p1 = p; - cgen(r->right, nn); - patch(p1, pc); - break; - - case OPOSTINC: - case OPOSTDEC: - v = 1; - if(l->type->etype == TIND) - v = l->type->link->width; - if(o == OPOSTDEC) - v = -v; - if(l->op == OBIT) - goto bitinc; - if(nn == Z) - goto pre; - - if(hardleft) - reglcgen(&nod, l, Z); - else - nod = *l; - - gmove(&nod, nn); - if(typefd[n->type->etype]) { - regalloc(&nod1, l, Z); - gmove(&nod, &nod1); - if(v < 0) - gopcode(OSUB, n->type, nodfconst(-v), &nod1); - else - gopcode(OADD, n->type, nodfconst(v), &nod1); - gmove(&nod1, &nod); - regfree(&nod1); - } else - gopcode(OADD, n->type, nodconst(v), &nod); - if(hardleft) - regfree(&nod); - break; - - case OPREINC: - case OPREDEC: - v = 1; - if(l->type->etype == TIND) - v = l->type->link->width; - if(o == OPREDEC) - v = -v; - if(l->op == OBIT) - goto bitinc; - - pre: - if(hardleft) - reglcgen(&nod, l, Z); - else - nod = *l; - if(typefd[n->type->etype]) { - regalloc(&nod1, l, Z); - gmove(&nod, &nod1); - if(v < 0) - gopcode(OSUB, n->type, nodfconst(-v), &nod1); - else - gopcode(OADD, n->type, nodfconst(v), &nod1); - gmove(&nod1, &nod); - regfree(&nod1); - } else - gopcode(OADD, n->type, nodconst(v), &nod); - if(nn != Z) - gmove(&nod, nn); - if(hardleft) - regfree(&nod); - break; - - bitinc: - if(nn != Z && (o == OPOSTINC || o == OPOSTDEC)) { - bitload(l, &nod, &nod1, &nod2, Z); - gmove(&nod, nn); - gopcode(OADD, tfield, nodconst(v), &nod); - bitstore(l, &nod, &nod1, &nod2, Z); - break; - } - bitload(l, &nod, &nod1, &nod2, nn); - gopcode(OADD, tfield, nodconst(v), &nod); - bitstore(l, &nod, &nod1, &nod2, nn); - break; - } -done: - cursafe = curs; -} - -void -reglcgen(Node *t, Node *n, Node *nn) -{ - Node *r; - int32 v; - - regialloc(t, n, nn); - if(n->op == OIND) { - r = n->left; - while(r->op == OADD) - r = r->right; - if(sconst(r)) { - v = r->vconst; - r->vconst = 0; - lcgen(n, t); - t->xoffset += v; - r->vconst = v; - regind(t, n); - return; - } - } - lcgen(n, t); - regind(t, n); -} - -void -lcgen(Node *n, Node *nn) -{ - Prog *p1; - Node nod; - - if(debug['g']) { - prtree(nn, "lcgen lhs"); - prtree(n, "lcgen"); - } - if(n == Z || n->type == T) - return; - if(nn == Z) { - nn = &nod; - regalloc(&nod, n, Z); - } - switch(n->op) { - default: - if(n->addable < INDEXED) { - diag(n, "unknown op in lcgen: %O", n->op); - break; - } - gopcode(OADDR, n->type, n, nn); - break; - - case OCOMMA: - cgen(n->left, n->left); - lcgen(n->right, nn); - break; - - case OIND: - cgen(n->left, nn); - break; - - case OCOND: - bcgen(n->left, 1); - p1 = p; - lcgen(n->right->left, nn); - gbranch(OGOTO); - patch(p1, pc); - p1 = p; - lcgen(n->right->right, nn); - patch(p1, pc); - break; - } -} - -void -bcgen(Node *n, int true) -{ - - if(n->type == T) - gbranch(OGOTO); - else - boolgen(n, true, Z); -} - -void -boolgen(Node *n, int true, Node *nn) -{ - int o; - Prog *p1, *p2, *p3; - Node *l, *r, nod, nod1; - int32 curs; - - if(debug['g']) { - print("boolgen %d\n", true); - prtree(nn, "boolgen lhs"); - prtree(n, "boolgen"); - } - curs = cursafe; - l = n->left; - r = n->right; - switch(n->op) { - - default: - o = ONE; - if(true) - o = OEQ; - /* bad, 13 is address of external that becomes constant */ - if(n->addable >= INDEXED && n->addable != 13) { - if(typefd[n->type->etype]) { - regalloc(&nod1, n, Z); - gmove(nodfconst(0.0), &nod1); /* TO DO: FREGZERO */ - gopcode(o, n->type, n, &nod1); - regfree(&nod1); - } else - gopcode(o, n->type, n, nodconst(0)); - goto com; - } - regalloc(&nod, n, nn); - cgen(n, &nod); - if(typefd[n->type->etype]) { - regalloc(&nod1, n, Z); - gmove(nodfconst(0.0), &nod1); /* TO DO: FREGZERO */ - gopcode(o, n->type, &nod, &nod1); - regfree(&nod1); - } else - gopcode(o, n->type, &nod, nodconst(0)); - regfree(&nod); - goto com; - - case OCONST: - o = vconst(n); - if(!true) - o = !o; - gbranch(OGOTO); - if(o) { - p1 = p; - gbranch(OGOTO); - patch(p1, pc); - } - goto com; - - case OCOMMA: - cgen(l, Z); - boolgen(r, true, nn); - break; - - case ONOT: - boolgen(l, !true, nn); - break; - - case OCOND: - bcgen(l, 1); - p1 = p; - bcgen(r->left, true); - p2 = p; - gbranch(OGOTO); - patch(p1, pc); - p1 = p; - bcgen(r->right, !true); - patch(p2, pc); - p2 = p; - gbranch(OGOTO); - patch(p1, pc); - patch(p2, pc); - goto com; - - case OANDAND: - if(!true) - goto caseor; - - caseand: - bcgen(l, true); - p1 = p; - bcgen(r, !true); - p2 = p; - patch(p1, pc); - gbranch(OGOTO); - patch(p2, pc); - goto com; - - case OOROR: - if(!true) - goto caseand; - - caseor: - bcgen(l, !true); - p1 = p; - bcgen(r, !true); - p2 = p; - gbranch(OGOTO); - patch(p1, pc); - patch(p2, pc); - goto com; - - case OEQ: - case ONE: - case OLE: - case OLT: - case OGE: - case OGT: - case OHI: - case OHS: - case OLO: - case OLS: - o = n->op; - if(true && typefd[l->type->etype] && (o == OEQ || o == ONE)) { - // Cannot rewrite !(l == r) into l != r with float64; it breaks NaNs. - // Jump around instead. - boolgen(n, 0, Z); - p1 = p; - gbranch(OGOTO); - patch(p1, pc); - goto com; - } - if(true) - o = comrel[relindex(o)]; - if(l->complex >= FNX && r->complex >= FNX) { - regret(&nod, r, 0, 0); - cgen(r, &nod); - regsalloc(&nod1, r); - gmove(&nod, &nod1); - regfree(&nod); - nod = *n; - nod.right = &nod1; - boolgen(&nod, true, nn); - break; - } - if(immconst(l)) { - // NOTE: Reversing the comparison here is wrong - // for floating point ordering comparisons involving NaN, - // but we don't have any of those yet so we don't - // bother worrying about it. - o = invrel[relindex(o)]; - /* bad, 13 is address of external that becomes constant */ - if(r->addable < INDEXED || r->addable == 13) { - regalloc(&nod, r, nn); - cgen(r, &nod); - gopcode(o, l->type, &nod, l); - regfree(&nod); - } else - gopcode(o, l->type, r, l); - goto com; - } - if(typefd[l->type->etype]) - o = invrel[relindex(logrel[relindex(o)])]; - if(l->complex >= r->complex) { - regalloc(&nod, l, nn); - cgen(l, &nod); - if(r->addable < INDEXED || hardconst(r) || typefd[l->type->etype]) { - regalloc(&nod1, r, Z); - cgen(r, &nod1); - gopcode(o, l->type, &nod, &nod1); - regfree(&nod1); - } else { - gopcode(o, l->type, &nod, r); - } - regfree(&nod); - goto fixfloat; - } - regalloc(&nod, r, nn); - cgen(r, &nod); - if(l->addable < INDEXED || l->addable == 13 || hardconst(l)) { - regalloc(&nod1, l, Z); - cgen(l, &nod1); - if(typechl[l->type->etype] && ewidth[l->type->etype] <= ewidth[TINT]) - gopcode(o, types[TINT], &nod1, &nod); - else - gopcode(o, l->type, &nod1, &nod); - regfree(&nod1); - } else - gopcode(o, l->type, l, &nod); - regfree(&nod); - fixfloat: - if(typefd[l->type->etype]) { - switch(o) { - case OEQ: - // Already emitted AJEQ; want AJEQ and AJPC. - p1 = p; - gbranch(OGOTO); - p2 = p; - patch(p1, pc); - gins(AJPC, Z, Z); - patch(p2, pc); - break; - - case ONE: - // Already emitted AJNE; want AJNE or AJPS. - p1 = p; - gins(AJPS, Z, Z); - p2 = p; - gbranch(OGOTO); - p3 = p; - patch(p1, pc); - patch(p2, pc); - gbranch(OGOTO); - patch(p3, pc); - break; - } - } - - com: - if(nn != Z) { - p1 = p; - gmove(nodconst(1L), nn); - gbranch(OGOTO); - p2 = p; - patch(p1, pc); - gmove(nodconst(0L), nn); - patch(p2, pc); - } - break; - } - cursafe = curs; -} - -void -sugen(Node *n, Node *nn, int32 w) -{ - Prog *p1; - Node nod0, nod1, nod2, nod3, nod4, *l, *r; - Type *t; - int c, mt, mo; - vlong o0, o1; - - if(n == Z || n->type == T) - return; - if(debug['g']) { - prtree(nn, "sugen lhs"); - prtree(n, "sugen"); - } - if(nn == nodrat) - if(w > nrathole) - nrathole = w; - switch(n->op) { - case OIND: - if(nn == Z) { - nullwarn(n->left, Z); - break; - } - - default: - goto copy; - - case OCONST: - goto copy; - - case ODOT: - l = n->left; - sugen(l, nodrat, l->type->width); - if(nn == Z) - break; - warn(n, "non-interruptable temporary"); - nod1 = *nodrat; - r = n->right; - if(!r || r->op != OCONST) { - diag(n, "DOT and no offset"); - break; - } - nod1.xoffset += (int32)r->vconst; - nod1.type = n->type; - sugen(&nod1, nn, w); - break; - - case OSTRUCT: - /* - * rewrite so lhs has no fn call - */ - if(nn != Z && side(nn)) { - nod1 = *n; - nod1.type = typ(TIND, n->type); - regret(&nod2, &nod1, 0, 0); - lcgen(nn, &nod2); - regsalloc(&nod0, &nod1); - cgen(&nod2, &nod0); - regfree(&nod2); - - nod1 = *n; - nod1.op = OIND; - nod1.left = &nod0; - nod1.right = Z; - nod1.complex = 1; - - sugen(n, &nod1, w); - return; - } - - r = n->left; - for(t = n->type->link; t != T; t = t->down) { - l = r; - if(r->op == OLIST) { - l = r->left; - r = r->right; - } - if(nn == Z) { - cgen(l, nn); - continue; - } - /* - * hand craft *(&nn + o) = l - */ - nod0 = znode; - nod0.op = OAS; - nod0.type = t; - nod0.left = &nod1; - nod0.right = nil; - - nod1 = znode; - nod1.op = OIND; - nod1.type = t; - nod1.left = &nod2; - - nod2 = znode; - nod2.op = OADD; - nod2.type = typ(TIND, t); - nod2.left = &nod3; - nod2.right = &nod4; - - nod3 = znode; - nod3.op = OADDR; - nod3.type = nod2.type; - nod3.left = nn; - - nod4 = znode; - nod4.op = OCONST; - nod4.type = nod2.type; - nod4.vconst = t->offset; - - ccom(&nod0); - acom(&nod0); - xcom(&nod0); - nod0.addable = 0; - nod0.right = l; - - // prtree(&nod0, "hand craft"); - cgen(&nod0, Z); - } - break; - - case OAS: - if(nn == Z) { - if(n->addable < INDEXED) - sugen(n->right, n->left, w); - break; - } - - sugen(n->right, nodrat, w); - warn(n, "non-interruptable temporary"); - sugen(nodrat, n->left, w); - sugen(nodrat, nn, w); - break; - - case OFUNC: - if(!hasdotdotdot(n->left->type)) { - cgen(n, Z); - if(nn != Z) { - curarg -= n->type->width; - regret(&nod1, n, n->left->type, 1); - if(nn->complex >= FNX) { - regsalloc(&nod2, n); - cgen(&nod1, &nod2); - nod1 = nod2; - } - cgen(&nod1, nn); - } - break; - } - if(nn == Z) { - sugen(n, nodrat, w); - break; - } - if(nn->op != OIND) { - nn = new1(OADDR, nn, Z); - nn->type = types[TIND]; - nn->addable = 0; - } else - nn = nn->left; - n = new(OFUNC, n->left, new(OLIST, nn, n->right)); - n->type = types[TVOID]; - n->left->type = types[TVOID]; - cgen(n, Z); - break; - - case OCOND: - bcgen(n->left, 1); - p1 = p; - sugen(n->right->left, nn, w); - gbranch(OGOTO); - patch(p1, pc); - p1 = p; - sugen(n->right->right, nn, w); - patch(p1, pc); - break; - - case OCOMMA: - cgen(n->left, Z); - sugen(n->right, nn, w); - break; - } - return; - -copy: - if(nn == Z) { - switch(n->op) { - case OASADD: - case OASSUB: - case OASAND: - case OASOR: - case OASXOR: - - case OASMUL: - case OASLMUL: - - - case OASASHL: - case OASASHR: - case OASLSHR: - break; - - case OPOSTINC: - case OPOSTDEC: - case OPREINC: - case OPREDEC: - break; - - default: - return; - } - } - - if(n->complex >= FNX && nn != nil && nn->complex >= FNX) { - t = nn->type; - nn->type = types[TIND]; - regialloc(&nod1, nn, Z); - lcgen(nn, &nod1); - regsalloc(&nod2, nn); - nn->type = t; - - gins(AMOVQ, &nod1, &nod2); - regfree(&nod1); - - nod2.type = typ(TIND, t); - - nod1 = nod2; - nod1.op = OIND; - nod1.left = &nod2; - nod1.right = Z; - nod1.complex = 1; - nod1.type = t; - - sugen(n, &nod1, w); - return; - } - - if(w <= 32) { - c = cursafe; - if(n->left != Z && n->left->complex >= FNX - && n->right != Z && n->right->complex >= FNX) { - regsalloc(&nod1, n->right); - cgen(n->right, &nod1); - nod2 = *n; - nod2.right = &nod1; - cgen(&nod2, nn); - cursafe = c; - return; - } - if(w & 7) { - mt = TLONG; - mo = AMOVL; - } else { - mt = TVLONG; - mo = AMOVQ; - } - if(n->complex > nn->complex) { - t = n->type; - n->type = types[mt]; - regalloc(&nod0, n, Z); - if(!vaddr(n, 0)) { - reglcgen(&nod1, n, Z); - n->type = t; - n = &nod1; - } - else - n->type = t; - - t = nn->type; - nn->type = types[mt]; - if(!vaddr(nn, 0)) { - reglcgen(&nod2, nn, Z); - nn->type = t; - nn = &nod2; - } - else - nn->type = t; - } else { - t = nn->type; - nn->type = types[mt]; - regalloc(&nod0, nn, Z); - if(!vaddr(nn, 0)) { - reglcgen(&nod2, nn, Z); - nn->type = t; - nn = &nod2; - } - else - nn->type = t; - - t = n->type; - n->type = types[mt]; - if(!vaddr(n, 0)) { - reglcgen(&nod1, n, Z); - n->type = t; - n = &nod1; - } - else - n->type = t; - } - o0 = n->xoffset; - o1 = nn->xoffset; - w /= ewidth[mt]; - while(--w >= 0) { - gins(mo, n, &nod0); - gins(mo, &nod0, nn); - n->xoffset += ewidth[mt]; - nn->xoffset += ewidth[mt]; - } - n->xoffset = o0; - nn->xoffset = o1; - if(nn == &nod2) - regfree(&nod2); - if(n == &nod1) - regfree(&nod1); - regfree(&nod0); - return; - } - - /* botch, need to save in .safe */ - c = 0; - if(n->complex > nn->complex) { - t = n->type; - n->type = types[TIND]; - nodreg(&nod1, n, D_SI); - if(reg[D_SI]) { - gins(APUSHQ, &nod1, Z); - c |= 1; - reg[D_SI]++; - } - lcgen(n, &nod1); - n->type = t; - - t = nn->type; - nn->type = types[TIND]; - nodreg(&nod2, nn, D_DI); - if(reg[D_DI]) { -warn(Z, "DI botch"); - gins(APUSHQ, &nod2, Z); - c |= 2; - reg[D_DI]++; - } - lcgen(nn, &nod2); - nn->type = t; - } else { - t = nn->type; - nn->type = types[TIND]; - nodreg(&nod2, nn, D_DI); - if(reg[D_DI]) { -warn(Z, "DI botch"); - gins(APUSHQ, &nod2, Z); - c |= 2; - reg[D_DI]++; - } - lcgen(nn, &nod2); - nn->type = t; - - t = n->type; - n->type = types[TIND]; - nodreg(&nod1, n, D_SI); - if(reg[D_SI]) { - gins(APUSHQ, &nod1, Z); - c |= 1; - reg[D_SI]++; - } - lcgen(n, &nod1); - n->type = t; - } - nodreg(&nod3, n, D_CX); - if(reg[D_CX]) { - gins(APUSHQ, &nod3, Z); - c |= 4; - reg[D_CX]++; - } - gins(AMOVL, nodconst(w/SZ_INT), &nod3); - gins(ACLD, Z, Z); - gins(AREP, Z, Z); - gins(AMOVSL, Z, Z); - if(c & 4) { - gins(APOPQ, Z, &nod3); - reg[D_CX]--; - } - if(c & 2) { - gins(APOPQ, Z, &nod2); - reg[nod2.reg]--; - } - if(c & 1) { - gins(APOPQ, Z, &nod1); - reg[nod1.reg]--; - } -} - -/* - * TO DO - */ -void -layout(Node *f, Node *t, int c, int cv, Node *cn) -{ - Node t1, t2; - - while(c > 3) { - layout(f, t, 2, 0, Z); - c -= 2; - } - - regalloc(&t1, &lregnode, Z); - regalloc(&t2, &lregnode, Z); - if(c > 0) { - gmove(f, &t1); - f->xoffset += SZ_INT; - } - if(cn != Z) - gmove(nodconst(cv), cn); - if(c > 1) { - gmove(f, &t2); - f->xoffset += SZ_INT; - } - if(c > 0) { - gmove(&t1, t); - t->xoffset += SZ_INT; - } - if(c > 2) { - gmove(f, &t1); - f->xoffset += SZ_INT; - } - if(c > 1) { - gmove(&t2, t); - t->xoffset += SZ_INT; - } - if(c > 2) { - gmove(&t1, t); - t->xoffset += SZ_INT; - } - regfree(&t1); - regfree(&t2); -} - -/* - * constant is not vlong or fits as 32-bit signed immediate - */ -int -immconst(Node *n) -{ - int32 v; - - if(n->op != OCONST || !typechlpv[n->type->etype]) - return 0; - if(typechl[n->type->etype]) - return 1; - v = n->vconst; - return n->vconst == (vlong)v; -} - -/* - * if a constant and vlong, doesn't fit as 32-bit signed immediate - */ -int -hardconst(Node *n) -{ - return n->op == OCONST && !immconst(n); -} - -/* - * casting up to t2 covers an intermediate cast to t1 - */ -int -castup(Type *t1, Type *t2) -{ - int ft; - - if(!nilcast(t1, t2)) - return 0; - /* known to be small to large */ - ft = t1->etype; - switch(t2->etype){ - case TINT: - case TLONG: - return ft == TLONG || ft == TINT || ft == TSHORT || ft == TCHAR; - case TUINT: - case TULONG: - return ft == TULONG || ft == TUINT || ft == TUSHORT || ft == TUCHAR; - case TVLONG: - return ft == TLONG || ft == TINT || ft == TSHORT; - case TUVLONG: - return ft == TULONG || ft == TUINT || ft == TUSHORT; - } - return 0; -} - -void -zeroregm(Node *n) -{ - gins(AMOVL, nodconst(0), n); -} - -/* do we need to load the address of a vlong? */ -int -vaddr(Node *n, int a) -{ - switch(n->op) { - case ONAME: - if(a) - return 1; - return !(n->class == CEXTERN || n->class == CGLOBL || n->class == CSTATIC); - - case OCONST: - case OREGISTER: - case OINDREG: - return 1; - } - return 0; -} - -int32 -hi64v(Node *n) -{ - if(align(0, types[TCHAR], Aarg1, nil)) /* isbigendian */ - return (int32)(n->vconst) & ~0L; - else - return (int32)((uvlong)n->vconst>>32) & ~0L; -} - -int32 -lo64v(Node *n) -{ - if(align(0, types[TCHAR], Aarg1, nil)) /* isbigendian */ - return (int32)((uvlong)n->vconst>>32) & ~0L; - else - return (int32)(n->vconst) & ~0L; -} - -Node * -hi64(Node *n) -{ - return nodconst(hi64v(n)); -} - -Node * -lo64(Node *n) -{ - return nodconst(lo64v(n)); -} - -int -cond(int op) -{ - switch(op) { - case OANDAND: - case OOROR: - case ONOT: - return 1; - - case OEQ: - case ONE: - case OLE: - case OLT: - case OGE: - case OGT: - case OHI: - case OHS: - case OLO: - case OLS: - return 1; - } - return 0; -} diff --git a/src/cmd/6c/div.c b/src/cmd/6c/div.c deleted file mode 100644 index bad6c5e27..000000000 --- a/src/cmd/6c/div.c +++ /dev/null @@ -1,236 +0,0 @@ -// Inferno utils/6c/div.c -// http://code.google.com/p/inferno-os/source/browse/utils/6c/div.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -/* - * Based on: Granlund, T.; Montgomery, P.L. - * "Division by Invariant Integers using Multiplication". - * SIGPLAN Notices, Vol. 29, June 1994, page 61. - */ - -#define TN(n) ((uvlong)1 << (n)) -#define T31 TN(31) -#define T32 TN(32) - -int -multiplier(uint32 d, int p, uvlong *mp) -{ - int l; - uvlong mlo, mhi, tlo, thi; - - l = topbit(d - 1) + 1; - mlo = (((TN(l) - d) << 32) / d) + T32; - if(l + p == 64) - mhi = (((TN(l) + 1 - d) << 32) / d) + T32; - else - mhi = (TN(32 + l) + TN(32 + l - p)) / d; - /*assert(mlo < mhi);*/ - while(l > 0) { - tlo = mlo >> 1; - thi = mhi >> 1; - if(tlo == thi) - break; - mlo = tlo; - mhi = thi; - l--; - } - *mp = mhi; - return l; -} - -int -sdiv(uint32 d, uint32 *mp, int *sp) -{ - int s; - uvlong m; - - s = multiplier(d, 32 - 1, &m); - *mp = m; - *sp = s; - if(m >= T31) - return 1; - else - return 0; -} - -int -udiv(uint32 d, uint32 *mp, int *sp, int *pp) -{ - int p, s; - uvlong m; - - s = multiplier(d, 32, &m); - p = 0; - if(m >= T32) { - while((d & 1) == 0) { - d >>= 1; - p++; - } - s = multiplier(d, 32 - p, &m); - } - *mp = m; - *pp = p; - if(m >= T32) { - /*assert(p == 0);*/ - *sp = s - 1; - return 1; - } - else { - *sp = s; - return 0; - } -} - -void -sdivgen(Node *l, Node *r, Node *ax, Node *dx) -{ - int a, s; - uint32 m; - vlong c; - - c = r->vconst; - if(c < 0) - c = -c; - a = sdiv(c, &m, &s); -//print("a=%d i=%d s=%d m=%ux\n", a, (long)r->vconst, s, m); - gins(AMOVL, nodconst(m), ax); - gins(AIMULL, l, Z); - gins(AMOVL, l, ax); - if(a) - gins(AADDL, ax, dx); - gins(ASHRL, nodconst(31), ax); - gins(ASARL, nodconst(s), dx); - gins(AADDL, ax, dx); - if(r->vconst < 0) - gins(ANEGL, Z, dx); -} - -void -udivgen(Node *l, Node *r, Node *ax, Node *dx) -{ - int a, s, t; - uint32 m; - Node nod; - - a = udiv(r->vconst, &m, &s, &t); -//print("a=%ud i=%d p=%d s=%d m=%ux\n", a, (long)r->vconst, t, s, m); - if(t != 0) { - gins(AMOVL, l, ax); - gins(ASHRL, nodconst(t), ax); - gins(AMOVL, nodconst(m), dx); - gins(AMULL, dx, Z); - } - else if(a) { - if(l->op != OREGISTER) { - regalloc(&nod, l, Z); - gins(AMOVL, l, &nod); - l = &nod; - } - gins(AMOVL, nodconst(m), ax); - gins(AMULL, l, Z); - gins(AADDL, l, dx); - gins(ARCRL, nodconst(1), dx); - if(l == &nod) - regfree(l); - } - else { - gins(AMOVL, nodconst(m), ax); - gins(AMULL, l, Z); - } - if(s != 0) - gins(ASHRL, nodconst(s), dx); -} - -void -sext(Node *d, Node *s, Node *l) -{ - if(s->reg == D_AX && !nodreg(d, Z, D_DX)) { - reg[D_DX]++; - gins(ACDQ, Z, Z); - } - else { - regalloc(d, l, Z); - gins(AMOVL, s, d); - gins(ASARL, nodconst(31), d); - } -} - -void -sdiv2(int32 c, int v, Node *l, Node *n) -{ - Node nod; - - if(v > 0) { - if(v > 1) { - sext(&nod, n, l); - gins(AANDL, nodconst((1 << v) - 1), &nod); - gins(AADDL, &nod, n); - regfree(&nod); - } - else { - gins(ACMPL, n, nodconst(0x80000000)); - gins(ASBBL, nodconst(-1), n); - } - gins(ASARL, nodconst(v), n); - } - if(c < 0) - gins(ANEGL, Z, n); -} - -void -smod2(int32 c, int v, Node *l, Node *n) -{ - Node nod; - - if(c == 1) { - zeroregm(n); - return; - } - - sext(&nod, n, l); - if(v == 0) { - zeroregm(n); - gins(AXORL, &nod, n); - gins(ASUBL, &nod, n); - } - else if(v > 1) { - gins(AANDL, nodconst((1 << v) - 1), &nod); - gins(AADDL, &nod, n); - gins(AANDL, nodconst((1 << v) - 1), n); - gins(ASUBL, &nod, n); - } - else { - gins(AANDL, nodconst(1), n); - gins(AXORL, &nod, n); - gins(ASUBL, &nod, n); - } - regfree(&nod); -} diff --git a/src/cmd/6c/doc.go b/src/cmd/6c/doc.go deleted file mode 100644 index e0a22e78b..000000000 --- a/src/cmd/6c/doc.go +++ /dev/null @@ -1,16 +0,0 @@ -// Copyright 2009 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build ignore - -/* - -6c is a version of the Plan 9 C compiler. The original is documented at - - http://plan9.bell-labs.com/magic/man2html/1/8c - -Its target architecture is the x86-64, referred to by these tools as amd64. - -*/ -package main diff --git a/src/cmd/6c/gc.h b/src/cmd/6c/gc.h deleted file mode 100644 index aa9d95d21..000000000 --- a/src/cmd/6c/gc.h +++ /dev/null @@ -1,359 +0,0 @@ -// Inferno utils/6c/gc.h -// http://code.google.com/p/inferno-os/source/browse/utils/6c/gc.h -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <u.h> -#include "../cc/cc.h" -#include "../6l/6.out.h" - -/* - * 6c/amd64 - * Intel 386 with AMD64 extensions - */ -#define SZ_CHAR 1 -#define SZ_SHORT 2 -#define SZ_INT 4 -#define SZ_LONG 4 -#define SZ_IND 8 -#define SZ_FLOAT 4 -#define SZ_VLONG 8 -#define SZ_DOUBLE 8 -#define FNX 100 - -typedef struct Case Case; -typedef struct C1 C1; -typedef struct Reg Reg; -typedef struct Rgn Rgn; -typedef struct Renv Renv; - -EXTERN struct -{ - Node* regtree; - Node* basetree; - short scale; - short reg; - short ptr; -} idx; - -#define INDEXED 9 - -#define A ((Addr*)0) -#define P ((Prog*)0) - -struct Case -{ - Case* link; - vlong val; - int32 label; - char def; - char isv; -}; -#define C ((Case*)0) - -struct C1 -{ - vlong val; - int32 label; -}; - -struct Reg -{ - int32 pc; - int32 rpo; /* reverse post ordering */ - - Bits set; - Bits use1; - Bits use2; - - Bits refbehind; - Bits refahead; - Bits calbehind; - Bits calahead; - Bits regdiff; - Bits act; - - int32 regu; - int32 loop; /* could be shorter */ - - Reg* log5; - int32 active; - - Reg* p1; - Reg* p2; - Reg* p2link; - Reg* s1; - Reg* s2; - Reg* link; - Prog* prog; -}; -#define R ((Reg*)0) - -struct Renv -{ - int safe; - Node base; - Node* saved; - Node* scope; -}; - -#define NRGN 600 -struct Rgn -{ - Reg* enter; - short cost; - short varno; - short regno; -}; - -EXTERN int32 breakpc; -EXTERN int32 nbreak; -EXTERN Case* cases; -EXTERN Node constnode; -EXTERN Node fconstnode; -EXTERN Node vconstnode; -EXTERN int32 continpc; -EXTERN int32 curarg; -EXTERN int32 cursafe; -EXTERN Prog* lastp; -EXTERN int32 maxargsafe; -EXTERN int mnstring; -EXTERN Node* nodrat; -EXTERN Node* nodret; -EXTERN Node* nodsafe; -EXTERN int32 nrathole; -EXTERN int32 nstring; -EXTERN Prog* p; -EXTERN int32 pc; -EXTERN Node lregnode; -EXTERN Node qregnode; -EXTERN char string[NSNAME]; -EXTERN Sym* symrathole; -EXTERN Node znode; -EXTERN Prog zprog; -EXTERN int reg[D_NONE]; -EXTERN int32 exregoffset; -EXTERN int32 exfregoffset; -EXTERN uchar typechlpv[NTYPE]; - -#define BLOAD(r) band(bnot(r->refbehind), r->refahead) -#define BSTORE(r) band(bnot(r->calbehind), r->calahead) -#define LOAD(r) (~r->refbehind.b[z] & r->refahead.b[z]) -#define STORE(r) (~r->calbehind.b[z] & r->calahead.b[z]) - -#define bset(a,n) ((a).b[(n)/32]&(1L<<(n)%32)) - -#define CLOAD 5 -#define CREF 5 -#define CINF 1000 -#define LOOP 3 - -EXTERN Rgn region[NRGN]; -EXTERN Rgn* rgp; -EXTERN int nregion; -EXTERN int nvar; - -EXTERN Bits externs; -EXTERN Bits params; -EXTERN Bits consts; -EXTERN Bits addrs; - -EXTERN int32 regbits; -EXTERN int32 exregbits; - -EXTERN int change; -EXTERN int suppress; - -EXTERN Reg* firstr; -EXTERN Reg* lastr; -EXTERN Reg zreg; -EXTERN Reg* freer; -EXTERN int32* idom; -EXTERN Reg** rpo2r; -EXTERN int32 maxnr; - -extern char* anames[]; - -/* - * sgen.c - */ -void codgen(Node*, Node*); -void gen(Node*); -void noretval(int); -void usedset(Node*, int); -void xcom(Node*); -void indx(Node*); -int bcomplex(Node*, Node*); -Prog* gtext(Sym*, int32); -vlong argsize(int); - -/* - * cgen.c - */ -void zeroregm(Node*); -void cgen(Node*, Node*); -void reglcgen(Node*, Node*, Node*); -void lcgen(Node*, Node*); -void bcgen(Node*, int); -void boolgen(Node*, int, Node*); -void sugen(Node*, Node*, int32); -int needreg(Node*, int); -int hardconst(Node*); -int immconst(Node*); - -/* - * txt.c - */ -void ginit(void); -void gclean(void); -void nextpc(void); -void gargs(Node*, Node*, Node*); -void garg1(Node*, Node*, Node*, int, Node**); -Node* nodconst(int32); -Node* nodfconst(double); -Node* nodgconst(vlong, Type*); -int nodreg(Node*, Node*, int); -int isreg(Node*, int); -void regret(Node*, Node*, Type*, int); -void regalloc(Node*, Node*, Node*); -void regfree(Node*); -void regialloc(Node*, Node*, Node*); -void regsalloc(Node*, Node*); -void regaalloc1(Node*, Node*); -void regaalloc(Node*, Node*); -void regind(Node*, Node*); -void gprep(Node*, Node*); -void naddr(Node*, Addr*); -void gcmp(int, Node*, vlong); -void gmove(Node*, Node*); -void gins(int a, Node*, Node*); -void gopcode(int, Type*, Node*, Node*); -int samaddr(Node*, Node*); -void gbranch(int); -void patch(Prog*, int32); -int sconst(Node*); -void gpseudo(int, Sym*, Node*); -void gprefetch(Node*); -void gpcdata(int, int); - -/* - * swt.c - */ -int swcmp(const void*, const void*); -void doswit(Node*); -void swit1(C1*, int, int32, Node*); -void swit2(C1*, int, int32, Node*); -void newcase(void); -void bitload(Node*, Node*, Node*, Node*, Node*); -void bitstore(Node*, Node*, Node*, Node*, Node*); -int32 outstring(char*, int32); -void nullwarn(Node*, Node*); -void sextern(Sym*, Node*, int32, int32); -void gextern(Sym*, Node*, int32, int32); -void outcode(void); - -/* - * list - */ -void listinit(void); - -/* - * reg.c - */ -Reg* rega(void); -int rcmp(const void*, const void*); -void regopt(Prog*); -void addmove(Reg*, int, int, int); -Bits mkvar(Reg*, Addr*); -void prop(Reg*, Bits, Bits); -void loopit(Reg*, int32); -void synch(Reg*, Bits); -uint32 allreg(uint32, Rgn*); -void paint1(Reg*, int); -uint32 paint2(Reg*, int); -void paint3(Reg*, int, int32, int); -void addreg(Addr*, int); - -/* - * peep.c - */ -void peep(void); -void excise(Reg*); -Reg* uniqp(Reg*); -Reg* uniqs(Reg*); -int regtyp(Addr*); -int anyvar(Addr*); -int subprop(Reg*); -int copyprop(Reg*); -int copy1(Addr*, Addr*, Reg*, int); -int copyu(Prog*, Addr*, Addr*); - -int copyas(Addr*, Addr*); -int copyau(Addr*, Addr*); -int copysub(Addr*, Addr*, Addr*, int); -int copysub1(Prog*, Addr*, Addr*, int); - -int32 RtoB(int); -int32 FtoB(int); -int BtoR(int32); -int BtoF(int32); - -#define D_HI D_NONE -#define D_LO D_NONE - -/* - * bound - */ -void comtarg(void); - -/* - * com64 - */ -int cond(int); -int com64(Node*); -void com64init(void); -void bool64(Node*); -int32 lo64v(Node*); -int32 hi64v(Node*); -Node* lo64(Node*); -Node* hi64(Node*); - -/* - * div/mul - */ -void sdivgen(Node*, Node*, Node*, Node*); -void udivgen(Node*, Node*, Node*, Node*); -void sdiv2(int32, int, Node*, Node*); -void smod2(int32, int, Node*, Node*); -void mulgen(Type*, Node*, Node*); -void genmuladd(Node*, Node*, int, Node*); -void shiftit(Type*, Node*, Node*); - -#define D_X7 (D_X0+7) - -void fgopcode(int, Node*, Node*, int, int); diff --git a/src/cmd/6c/list.c b/src/cmd/6c/list.c deleted file mode 100644 index 28f5b8df7..000000000 --- a/src/cmd/6c/list.c +++ /dev/null @@ -1,38 +0,0 @@ -// Inferno utils/6c/list.c -// http://code.google.com/p/inferno-os/source/browse/utils/6c/list.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#define EXTERN -#include "gc.h" - -void -listinit(void) -{ - listinit6(); -} diff --git a/src/cmd/6c/machcap.c b/src/cmd/6c/machcap.c deleted file mode 100644 index 820d9a0aa..000000000 --- a/src/cmd/6c/machcap.c +++ /dev/null @@ -1,107 +0,0 @@ -// Inferno utils/6c/machcap.c -// http://code.google.com/p/inferno-os/source/browse/utils/6c/machcap.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -int -machcap(Node *n) -{ - - if(n == Z) - return 1; /* test */ - - switch(n->op) { - case OMUL: - case OLMUL: - case OASMUL: - case OASLMUL: - if(typechl[n->type->etype]) - return 1; - if(typev[n->type->etype]) - return 1; - break; - - case OCOM: - case ONEG: - case OADD: - case OAND: - case OOR: - case OSUB: - case OXOR: - case OASHL: - case OLSHR: - case OASHR: - if(typechlv[n->left->type->etype]) - return 1; - break; - - case OCAST: - return 1; - - case OCOND: - case OCOMMA: - case OLIST: - case OANDAND: - case OOROR: - case ONOT: - return 1; - - case OASADD: - case OASSUB: - case OASAND: - case OASOR: - case OASXOR: - return 1; - - case OASASHL: - case OASASHR: - case OASLSHR: - return 1; - - case OPOSTINC: - case OPOSTDEC: - case OPREINC: - case OPREDEC: - return 1; - - case OEQ: - case ONE: - case OLE: - case OGT: - case OLT: - case OGE: - case OHI: - case OHS: - case OLO: - case OLS: - return 1; - } - return 0; -} diff --git a/src/cmd/6c/mul.c b/src/cmd/6c/mul.c deleted file mode 100644 index 510edc05c..000000000 --- a/src/cmd/6c/mul.c +++ /dev/null @@ -1,458 +0,0 @@ -// Inferno utils/6c/mul.c -// http://code.google.com/p/inferno-os/source/browse/utils/6c/mul.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -typedef struct Malg Malg; -typedef struct Mparam Mparam; - -struct Malg -{ - schar vals[10]; -}; - -struct Mparam -{ - uint32 value; - schar alg; - char neg; - char shift; - char arg; - schar off; -}; - -static Mparam multab[32]; -static int mulptr; - -static Malg malgs[] = -{ - {0, 100}, - {-1, 1, 100}, - {-9, -5, -3, 3, 5, 9, 100}, - {6, 10, 12, 18, 20, 24, 36, 40, 72, 100}, - {-8, -4, -2, 2, 4, 8, 100}, -}; - -/* - * return position of lowest 1 - */ -int -lowbit(uint32 v) -{ - int s, i; - uint32 m; - - s = 0; - m = 0xFFFFFFFFUL; - for(i = 16; i > 0; i >>= 1) { - m >>= i; - if((v & m) == 0) { - v >>= i; - s += i; - } - } - return s; -} - -void -genmuladd(Node *d, Node *s, int m, Node *a) -{ - Node nod; - - nod.op = OINDEX; - nod.left = a; - nod.right = s; - nod.scale = m; - nod.type = types[TIND]; - nod.xoffset = 0; - xcom(&nod); - gopcode(OADDR, d->type, &nod, d); -} - -void -mulparam(uint32 m, Mparam *mp) -{ - int c, i, j, n, o, q, s; - int bc, bi, bn, bo, bq, bs, bt; - schar *p; - int32 u; - uint32 t; - - bc = bq = 10; - bi = bn = bo = bs = bt = 0; - for(i = 0; i < nelem(malgs); i++) { - for(p = malgs[i].vals, j = 0; (o = p[j]) < 100; j++) - for(s = 0; s < 2; s++) { - c = 10; - q = 10; - u = m - o; - if(u == 0) - continue; - if(s) { - o = -o; - if(o > 0) - continue; - u = -u; - } - n = lowbit(u); - t = (uint32)u >> n; - switch(i) { - case 0: - if(t == 1) { - c = s + 1; - q = 0; - break; - } - switch(t) { - case 3: - case 5: - case 9: - c = s + 1; - if(n) - c++; - q = 0; - break; - } - if(s) - break; - switch(t) { - case 15: - case 25: - case 27: - case 45: - case 81: - c = 2; - if(n) - c++; - q = 1; - break; - } - break; - case 1: - if(t == 1) { - c = 3; - q = 3; - break; - } - switch(t) { - case 3: - case 5: - case 9: - c = 3; - q = 2; - break; - } - break; - case 2: - if(t == 1) { - c = 3; - q = 2; - break; - } - break; - case 3: - if(s) - break; - if(t == 1) { - c = 3; - q = 1; - break; - } - break; - case 4: - if(t == 1) { - c = 3; - q = 0; - break; - } - break; - } - if(c < bc || (c == bc && q > bq)) { - bc = c; - bi = i; - bn = n; - bo = o; - bq = q; - bs = s; - bt = t; - } - } - } - mp->value = m; - if(bc <= 3) { - mp->alg = bi; - mp->shift = bn; - mp->off = bo; - mp->neg = bs; - mp->arg = bt; - } - else - mp->alg = -1; -} - -int -m0(int a) -{ - switch(a) { - case -2: - case 2: - return 2; - case -3: - case 3: - return 2; - case -4: - case 4: - return 4; - case -5: - case 5: - return 4; - case 6: - return 2; - case -8: - case 8: - return 8; - case -9: - case 9: - return 8; - case 10: - return 4; - case 12: - return 2; - case 15: - return 2; - case 18: - return 8; - case 20: - return 4; - case 24: - return 2; - case 25: - return 4; - case 27: - return 2; - case 36: - return 8; - case 40: - return 4; - case 45: - return 4; - case 72: - return 8; - case 81: - return 8; - } - diag(Z, "bad m0"); - return 0; -} - -int -m1(int a) -{ - switch(a) { - case 15: - return 4; - case 25: - return 4; - case 27: - return 8; - case 45: - return 8; - case 81: - return 8; - } - diag(Z, "bad m1"); - return 0; -} - -int -m2(int a) -{ - switch(a) { - case 6: - return 2; - case 10: - return 2; - case 12: - return 4; - case 18: - return 2; - case 20: - return 4; - case 24: - return 8; - case 36: - return 4; - case 40: - return 8; - case 72: - return 8; - } - diag(Z, "bad m2"); - return 0; -} - -void -shiftit(Type *t, Node *s, Node *d) -{ - int32 c; - - c = (int32)s->vconst & 31; - switch(c) { - case 0: - break; - case 1: - gopcode(OADD, t, d, d); - break; - default: - gopcode(OASHL, t, s, d); - } -} - -static int -mulgen1(uint32 v, Node *n) -{ - int i, o; - Mparam *p; - Node nod, nods; - - for(i = 0; i < nelem(multab); i++) { - p = &multab[i]; - if(p->value == v) - goto found; - } - - p = &multab[mulptr]; - if(++mulptr == nelem(multab)) - mulptr = 0; - - mulparam(v, p); - -found: -// print("v=%.x a=%d n=%d s=%d g=%d o=%d \n", p->value, p->alg, p->neg, p->shift, p->arg, p->off); - if(p->alg < 0) - return 0; - - nods = *nodconst(p->shift); - - o = OADD; - if(p->alg > 0) { - regalloc(&nod, n, Z); - if(p->off < 0) - o = OSUB; - } - - switch(p->alg) { - case 0: - switch(p->arg) { - case 1: - shiftit(n->type, &nods, n); - break; - case 15: - case 25: - case 27: - case 45: - case 81: - genmuladd(n, n, m1(p->arg), n); - /* fall thru */ - case 3: - case 5: - case 9: - genmuladd(n, n, m0(p->arg), n); - shiftit(n->type, &nods, n); - break; - default: - goto bad; - } - if(p->neg == 1) - gins(ANEGL, Z, n); - break; - case 1: - switch(p->arg) { - case 1: - gmove(n, &nod); - shiftit(n->type, &nods, &nod); - break; - case 3: - case 5: - case 9: - genmuladd(&nod, n, m0(p->arg), n); - shiftit(n->type, &nods, &nod); - break; - default: - goto bad; - } - if(p->neg) - gopcode(o, n->type, &nod, n); - else { - gopcode(o, n->type, n, &nod); - gmove(&nod, n); - } - break; - case 2: - genmuladd(&nod, n, m0(p->off), n); - shiftit(n->type, &nods, n); - goto comop; - case 3: - genmuladd(&nod, n, m0(p->off), n); - shiftit(n->type, &nods, n); - genmuladd(n, &nod, m2(p->off), n); - break; - case 4: - genmuladd(&nod, n, m0(p->off), nodconst(0)); - shiftit(n->type, &nods, n); - goto comop; - default: - diag(Z, "bad mul alg"); - break; - comop: - if(p->neg) { - gopcode(o, n->type, n, &nod); - gmove(&nod, n); - } - else - gopcode(o, n->type, &nod, n); - } - - if(p->alg > 0) - regfree(&nod); - - return 1; - -bad: - diag(Z, "mulgen botch"); - return 1; -} - -void -mulgen(Type *t, Node *r, Node *n) -{ - if(!mulgen1(r->vconst, n)) - gopcode(OMUL, t, r, n); -} diff --git a/src/cmd/6c/peep.c b/src/cmd/6c/peep.c deleted file mode 100644 index a11067c84..000000000 --- a/src/cmd/6c/peep.c +++ /dev/null @@ -1,902 +0,0 @@ -// Inferno utils/6c/peep.c -// http://code.google.com/p/inferno-os/source/browse/utils/6c/peep.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -static int -needc(Prog *p) -{ - while(p != P) { - switch(p->as) { - case AADCL: - case AADCQ: - case ASBBL: - case ASBBQ: - case ARCRL: - case ARCRQ: - return 1; - case AADDL: - case AADDQ: - case ASUBL: - case ASUBQ: - case AJMP: - case ARET: - case ACALL: - return 0; - default: - if(p->to.type == D_BRANCH) - return 0; - } - p = p->link; - } - return 0; -} - -static Reg* -rnops(Reg *r) -{ - Prog *p; - Reg *r1; - - if(r != R) - for(;;){ - p = r->prog; - if(p->as != ANOP || p->from.type != D_NONE || p->to.type != D_NONE) - break; - r1 = uniqs(r); - if(r1 == R) - break; - r = r1; - } - return r; -} - -void -peep(void) -{ - Reg *r, *r1, *r2; - Prog *p, *p1; - int t; - - /* - * complete R structure - */ - t = 0; - for(r=firstr; r!=R; r=r1) { - r1 = r->link; - if(r1 == R) - break; - p = r->prog->link; - while(p != r1->prog) - switch(p->as) { - default: - r2 = rega(); - r->link = r2; - r2->link = r1; - - r2->prog = p; - r2->p1 = r; - r->s1 = r2; - r2->s1 = r1; - r1->p1 = r2; - - r = r2; - t++; - - case ADATA: - case AGLOBL: - case ANAME: - case ASIGNAME: - p = p->link; - } - } - - pc = 0; /* speculating it won't kill */ - -loop1: - - t = 0; - for(r=firstr; r!=R; r=r->link) { - p = r->prog; - switch(p->as) { - case AMOVL: - case AMOVQ: - case AMOVSS: - case AMOVSD: - if(regtyp(&p->to)) - if(regtyp(&p->from)) { - if(copyprop(r)) { - excise(r); - t++; - } else - if(subprop(r) && copyprop(r)) { - excise(r); - t++; - } - } - break; - - case AMOVBLZX: - case AMOVWLZX: - case AMOVBLSX: - case AMOVWLSX: - if(regtyp(&p->to)) { - r1 = rnops(uniqs(r)); - if(r1 != R) { - p1 = r1->prog; - if(p->as == p1->as && p->to.type == p1->from.type){ - p1->as = AMOVL; - t++; - } - } - } - break; - - case AMOVBQSX: - case AMOVBQZX: - case AMOVWQSX: - case AMOVWQZX: - case AMOVLQSX: - case AMOVLQZX: - if(regtyp(&p->to)) { - r1 = rnops(uniqs(r)); - if(r1 != R) { - p1 = r1->prog; - if(p->as == p1->as && p->to.type == p1->from.type){ - p1->as = AMOVQ; - t++; - } - } - } - break; - - case AADDL: - case AADDQ: - case AADDW: - if(p->from.type != D_CONST || needc(p->link)) - break; - if(p->from.offset == -1){ - if(p->as == AADDQ) - p->as = ADECQ; - else if(p->as == AADDL) - p->as = ADECL; - else - p->as = ADECW; - p->from = zprog.from; - } - else if(p->from.offset == 1){ - if(p->as == AADDQ) - p->as = AINCQ; - else if(p->as == AADDL) - p->as = AINCL; - else - p->as = AINCW; - p->from = zprog.from; - } - break; - - case ASUBL: - case ASUBQ: - case ASUBW: - if(p->from.type != D_CONST || needc(p->link)) - break; - if(p->from.offset == -1) { - if(p->as == ASUBQ) - p->as = AINCQ; - else if(p->as == ASUBL) - p->as = AINCL; - else - p->as = AINCW; - p->from = zprog.from; - } - else if(p->from.offset == 1){ - if(p->as == ASUBQ) - p->as = ADECQ; - else if(p->as == ASUBL) - p->as = ADECL; - else - p->as = ADECW; - p->from = zprog.from; - } - break; - } - } - if(t) - goto loop1; -} - -void -excise(Reg *r) -{ - Prog *p; - - p = r->prog; - p->as = ANOP; - p->from = zprog.from; - p->to = zprog.to; -} - -Reg* -uniqp(Reg *r) -{ - Reg *r1; - - r1 = r->p1; - if(r1 == R) { - r1 = r->p2; - if(r1 == R || r1->p2link != R) - return R; - } else - if(r->p2 != R) - return R; - return r1; -} - -Reg* -uniqs(Reg *r) -{ - Reg *r1; - - r1 = r->s1; - if(r1 == R) { - r1 = r->s2; - if(r1 == R) - return R; - } else - if(r->s2 != R) - return R; - return r1; -} - -int -regtyp(Addr *a) -{ - int t; - - t = a->type; - if(t >= D_AX && t <= D_R15) - return 1; - if(t >= D_X0 && t <= D_X0+15) - return 1; - return 0; -} - -/* - * the idea is to substitute - * one register for another - * from one MOV to another - * MOV a, R0 - * ADD b, R0 / no use of R1 - * MOV R0, R1 - * would be converted to - * MOV a, R1 - * ADD b, R1 - * MOV R1, R0 - * hopefully, then the former or latter MOV - * will be eliminated by copy propagation. - */ -int -subprop(Reg *r0) -{ - Prog *p; - Addr *v1, *v2; - Reg *r; - int t; - - p = r0->prog; - v1 = &p->from; - if(!regtyp(v1)) - return 0; - v2 = &p->to; - if(!regtyp(v2)) - return 0; - for(r=uniqp(r0); r!=R; r=uniqp(r)) { - if(uniqs(r) == R) - break; - p = r->prog; - switch(p->as) { - case ACALL: - return 0; - - case AIMULL: - case AIMULQ: - case AIMULW: - if(p->to.type != D_NONE) - break; - goto giveup; - - case AROLB: - case AROLL: - case AROLQ: - case AROLW: - case ARORB: - case ARORL: - case ARORQ: - case ARORW: - case ASALB: - case ASALL: - case ASALQ: - case ASALW: - case ASARB: - case ASARL: - case ASARQ: - case ASARW: - case ASHLB: - case ASHLL: - case ASHLQ: - case ASHLW: - case ASHRB: - case ASHRL: - case ASHRQ: - case ASHRW: - if(p->from.type == D_CONST) - break; - goto giveup; - - case ADIVB: - case ADIVL: - case ADIVQ: - case ADIVW: - case AIDIVB: - case AIDIVL: - case AIDIVQ: - case AIDIVW: - case AIMULB: - case AMULB: - case AMULL: - case AMULQ: - case AMULW: - - case AREP: - case AREPN: - - case ACWD: - case ACDQ: - case ACQO: - - case ASTOSB: - case ASTOSL: - case ASTOSQ: - case AMOVSB: - case AMOVSL: - case AMOVSQ: - case AMOVQL: - giveup: - return 0; - - case AMOVL: - case AMOVQ: - if(p->to.type == v1->type) - goto gotit; - break; - } - if(copyau(&p->from, v2) || - copyau(&p->to, v2)) - break; - if(copysub(&p->from, v1, v2, 0) || - copysub(&p->to, v1, v2, 0)) - break; - } - return 0; - -gotit: - copysub(&p->to, v1, v2, 1); - if(debug['P']) { - print("gotit: %D->%D\n%P", v1, v2, r->prog); - if(p->from.type == v2->type) - print(" excise"); - print("\n"); - } - for(r=uniqs(r); r!=r0; r=uniqs(r)) { - p = r->prog; - copysub(&p->from, v1, v2, 1); - copysub(&p->to, v1, v2, 1); - if(debug['P']) - print("%P\n", r->prog); - } - t = v1->type; - v1->type = v2->type; - v2->type = t; - if(debug['P']) - print("%P last\n", r->prog); - return 1; -} - -/* - * The idea is to remove redundant copies. - * v1->v2 F=0 - * (use v2 s/v2/v1/)* - * set v1 F=1 - * use v2 return fail - * ----------------- - * v1->v2 F=0 - * (use v2 s/v2/v1/)* - * set v1 F=1 - * set v2 return success - */ -int -copyprop(Reg *r0) -{ - Prog *p; - Addr *v1, *v2; - Reg *r; - - p = r0->prog; - v1 = &p->from; - v2 = &p->to; - if(copyas(v1, v2)) - return 1; - for(r=firstr; r!=R; r=r->link) - r->active = 0; - return copy1(v1, v2, r0->s1, 0); -} - -int -copy1(Addr *v1, Addr *v2, Reg *r, int f) -{ - int t; - Prog *p; - - if(r->active) { - if(debug['P']) - print("act set; return 1\n"); - return 1; - } - r->active = 1; - if(debug['P']) - print("copy %D->%D f=%d\n", v1, v2, f); - for(; r != R; r = r->s1) { - p = r->prog; - if(debug['P']) - print("%P", p); - if(!f && uniqp(r) == R) { - f = 1; - if(debug['P']) - print("; merge; f=%d", f); - } - t = copyu(p, v2, A); - switch(t) { - case 2: /* rar, can't split */ - if(debug['P']) - print("; %D rar; return 0\n", v2); - return 0; - - case 3: /* set */ - if(debug['P']) - print("; %D set; return 1\n", v2); - return 1; - - case 1: /* used, substitute */ - case 4: /* use and set */ - if(f) { - if(!debug['P']) - return 0; - if(t == 4) - print("; %D used+set and f=%d; return 0\n", v2, f); - else - print("; %D used and f=%d; return 0\n", v2, f); - return 0; - } - if(copyu(p, v2, v1)) { - if(debug['P']) - print("; sub fail; return 0\n"); - return 0; - } - if(debug['P']) - print("; sub %D/%D", v2, v1); - if(t == 4) { - if(debug['P']) - print("; %D used+set; return 1\n", v2); - return 1; - } - break; - } - if(!f) { - t = copyu(p, v1, A); - if(!f && (t == 2 || t == 3 || t == 4)) { - f = 1; - if(debug['P']) - print("; %D set and !f; f=%d", v1, f); - } - } - if(debug['P']) - print("\n"); - if(r->s2) - if(!copy1(v1, v2, r->s2, f)) - return 0; - } - return 1; -} - -/* - * return - * 1 if v only used (and substitute), - * 2 if read-alter-rewrite - * 3 if set - * 4 if set and used - * 0 otherwise (not touched) - */ -int -copyu(Prog *p, Addr *v, Addr *s) -{ - - switch(p->as) { - - default: - if(debug['P']) - print("unknown op %A\n", p->as); - /* SBBL; ADCL; FLD1; SAHF */ - return 2; - - - case ANEGB: - case ANEGW: - case ANEGL: - case ANEGQ: - case ANOTB: - case ANOTW: - case ANOTL: - case ANOTQ: - if(copyas(&p->to, v)) - return 2; - break; - - case ALEAL: /* lhs addr, rhs store */ - case ALEAQ: - if(copyas(&p->from, v)) - return 2; - - - case ANOP: /* rhs store */ - case AMOVL: - case AMOVQ: - case AMOVBLSX: - case AMOVBLZX: - case AMOVBQSX: - case AMOVBQZX: - case AMOVLQSX: - case AMOVLQZX: - case AMOVWLSX: - case AMOVWLZX: - case AMOVWQSX: - case AMOVWQZX: - case AMOVQL: - - case AMOVSS: - case AMOVSD: - case ACVTSD2SL: - case ACVTSD2SQ: - case ACVTSD2SS: - case ACVTSL2SD: - case ACVTSL2SS: - case ACVTSQ2SD: - case ACVTSQ2SS: - case ACVTSS2SD: - case ACVTSS2SL: - case ACVTSS2SQ: - case ACVTTSD2SL: - case ACVTTSD2SQ: - case ACVTTSS2SL: - case ACVTTSS2SQ: - if(copyas(&p->to, v)) { - if(s != A) - return copysub(&p->from, v, s, 1); - if(copyau(&p->from, v)) - return 4; - return 3; - } - goto caseread; - - case AROLB: - case AROLL: - case AROLQ: - case AROLW: - case ARORB: - case ARORL: - case ARORQ: - case ARORW: - case ASALB: - case ASALL: - case ASALQ: - case ASALW: - case ASARB: - case ASARL: - case ASARQ: - case ASARW: - case ASHLB: - case ASHLL: - case ASHLQ: - case ASHLW: - case ASHRB: - case ASHRL: - case ASHRQ: - case ASHRW: - if(copyas(&p->to, v)) - return 2; - if(copyas(&p->from, v)) - if(p->from.type == D_CX) - return 2; - goto caseread; - - case AADDB: /* rhs rar */ - case AADDL: - case AADDQ: - case AADDW: - case AANDB: - case AANDL: - case AANDQ: - case AANDW: - case ADECL: - case ADECQ: - case ADECW: - case AINCL: - case AINCQ: - case AINCW: - case ASUBB: - case ASUBL: - case ASUBQ: - case ASUBW: - case AORB: - case AORL: - case AORQ: - case AORW: - case AXORB: - case AXORL: - case AXORQ: - case AXORW: - case AMOVB: - case AMOVW: - - case AADDSD: - case AADDSS: - case ACMPSD: - case ACMPSS: - case ADIVSD: - case ADIVSS: - case AMAXSD: - case AMAXSS: - case AMINSD: - case AMINSS: - case AMULSD: - case AMULSS: - case ARCPSS: - case ARSQRTSS: - case ASQRTSD: - case ASQRTSS: - case ASUBSD: - case ASUBSS: - case AXORPD: - if(copyas(&p->to, v)) - return 2; - goto caseread; - - case ACMPL: /* read only */ - case ACMPW: - case ACMPB: - case ACMPQ: - - case APREFETCHT0: - case APREFETCHT1: - case APREFETCHT2: - case APREFETCHNTA: - - case ACOMISD: - case ACOMISS: - case AUCOMISD: - case AUCOMISS: - caseread: - if(s != A) { - if(copysub(&p->from, v, s, 1)) - return 1; - return copysub(&p->to, v, s, 1); - } - if(copyau(&p->from, v)) - return 1; - if(copyau(&p->to, v)) - return 1; - break; - - case AJGE: /* no reference */ - case AJNE: - case AJLE: - case AJEQ: - case AJHI: - case AJLS: - case AJMI: - case AJPL: - case AJGT: - case AJLT: - case AJCC: - case AJCS: - - case AADJSP: - case AWAIT: - case ACLD: - break; - - case AIMULL: - case AIMULQ: - case AIMULW: - if(p->to.type != D_NONE) { - if(copyas(&p->to, v)) - return 2; - goto caseread; - } - - case ADIVB: - case ADIVL: - case ADIVQ: - case ADIVW: - case AIDIVB: - case AIDIVL: - case AIDIVQ: - case AIDIVW: - case AIMULB: - case AMULB: - case AMULL: - case AMULQ: - case AMULW: - - case ACWD: - case ACDQ: - case ACQO: - if(v->type == D_AX || v->type == D_DX) - return 2; - goto caseread; - - case AREP: - case AREPN: - if(v->type == D_CX) - return 2; - goto caseread; - - case AMOVSB: - case AMOVSL: - case AMOVSQ: - if(v->type == D_DI || v->type == D_SI) - return 2; - goto caseread; - - case ASTOSB: - case ASTOSL: - case ASTOSQ: - if(v->type == D_AX || v->type == D_DI) - return 2; - goto caseread; - - case AJMP: /* funny */ - if(s != A) { - if(copysub(&p->to, v, s, 1)) - return 1; - return 0; - } - if(copyau(&p->to, v)) - return 1; - return 0; - - case ARET: /* funny */ - if(v->type == REGRET || v->type == FREGRET) - return 2; - if(s != A) - return 1; - return 3; - - case ACALL: /* funny */ - if(REGARG >= 0 && v->type == (uchar)REGARG) - return 2; - - if(s != A) { - if(copysub(&p->to, v, s, 1)) - return 1; - return 0; - } - if(copyau(&p->to, v)) - return 4; - return 3; - - case ATEXT: /* funny */ - if(REGARG >= 0 && v->type == (uchar)REGARG) - return 3; - return 0; - } - return 0; -} - -/* - * direct reference, - * could be set/use depending on - * semantics - */ -int -copyas(Addr *a, Addr *v) -{ - if(a->type != v->type) - return 0; - if(regtyp(v)) - return 1; - if(v->type == D_AUTO || v->type == D_PARAM) - if(v->offset == a->offset) - return 1; - return 0; -} - -/* - * either direct or indirect - */ -int -copyau(Addr *a, Addr *v) -{ - - if(copyas(a, v)) - return 1; - if(regtyp(v)) { - if(a->type-D_INDIR == v->type) - return 1; - if(a->index == v->type) - return 1; - } - return 0; -} - -/* - * substitute s for v in a - * return failure to substitute - */ -int -copysub(Addr *a, Addr *v, Addr *s, int f) -{ - int t; - - if(copyas(a, v)) { - t = s->type; - if(t >= D_AX && t <= D_R15 || t >= D_X0 && t <= D_X0+15) { - if(f) - a->type = t; - } - return 0; - } - if(regtyp(v)) { - t = v->type; - if(a->type == t+D_INDIR) { - if((s->type == D_BP || s->type == D_R13) && a->index != D_NONE) - return 1; /* can't use BP-base with index */ - if(f) - a->type = s->type+D_INDIR; -// return 0; - } - if(a->index == t) { - if(f) - a->index = s->type; - return 0; - } - return 0; - } - return 0; -} diff --git a/src/cmd/6c/reg.c b/src/cmd/6c/reg.c deleted file mode 100644 index 6f8d3ce14..000000000 --- a/src/cmd/6c/reg.c +++ /dev/null @@ -1,1523 +0,0 @@ -// Inferno utils/6c/reg.c -// http://code.google.com/p/inferno-os/source/browse/utils/6c/reg.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -static void fixjmp(Reg*); - -Reg* -rega(void) -{ - Reg *r; - - r = freer; - if(r == R) { - r = alloc(sizeof(*r)); - } else - freer = r->link; - - *r = zreg; - return r; -} - -int -rcmp(const void *a1, const void *a2) -{ - Rgn *p1, *p2; - int c1, c2; - - p1 = (Rgn*)a1; - p2 = (Rgn*)a2; - c1 = p2->cost; - c2 = p1->cost; - if(c1 -= c2) - return c1; - return p2->varno - p1->varno; -} - -void -regopt(Prog *p) -{ - Reg *r, *r1, *r2; - Prog *p1; - int i, z; - int32 initpc, val, npc; - uint32 vreg; - Bits bit; - struct - { - int32 m; - int32 c; - Reg* p; - } log5[6], *lp; - - firstr = R; - lastr = R; - nvar = 0; - regbits = RtoB(D_SP) | RtoB(D_AX) | RtoB(D_X0); - for(z=0; z<BITS; z++) { - externs.b[z] = 0; - params.b[z] = 0; - consts.b[z] = 0; - addrs.b[z] = 0; - } - - /* - * pass 1 - * build aux data structure - * allocate pcs - * find use and set of variables - */ - val = 5L * 5L * 5L * 5L * 5L; - lp = log5; - for(i=0; i<5; i++) { - lp->m = val; - lp->c = 0; - lp->p = R; - val /= 5L; - lp++; - } - val = 0; - for(; p != P; p = p->link) { - switch(p->as) { - case ADATA: - case AGLOBL: - case ANAME: - case ASIGNAME: - case AFUNCDATA: - continue; - } - r = rega(); - if(firstr == R) { - firstr = r; - lastr = r; - } else { - lastr->link = r; - r->p1 = lastr; - lastr->s1 = r; - lastr = r; - } - r->prog = p; - r->pc = val; - val++; - - lp = log5; - for(i=0; i<5; i++) { - lp->c--; - if(lp->c <= 0) { - lp->c = lp->m; - if(lp->p != R) - lp->p->log5 = r; - lp->p = r; - (lp+1)->c = 0; - break; - } - lp++; - } - - r1 = r->p1; - if(r1 != R) - switch(r1->prog->as) { - case ARET: - case AJMP: - case AIRETL: - case AIRETQ: - r->p1 = R; - r1->s1 = R; - } - - bit = mkvar(r, &p->from); - if(bany(&bit)) - switch(p->as) { - /* - * funny - */ - case ALEAL: - case ALEAQ: - for(z=0; z<BITS; z++) - addrs.b[z] |= bit.b[z]; - break; - - /* - * left side read - */ - default: - for(z=0; z<BITS; z++) - r->use1.b[z] |= bit.b[z]; - break; - } - - bit = mkvar(r, &p->to); - if(bany(&bit)) - switch(p->as) { - default: - diag(Z, "reg: unknown op: %A", p->as); - break; - - /* - * right side read - */ - case ACMPB: - case ACMPL: - case ACMPQ: - case ACMPW: - case APREFETCHT0: - case APREFETCHT1: - case APREFETCHT2: - case APREFETCHNTA: - case ACOMISS: - case ACOMISD: - case AUCOMISS: - case AUCOMISD: - for(z=0; z<BITS; z++) - r->use2.b[z] |= bit.b[z]; - break; - - /* - * right side write - */ - case ANOP: - case AMOVL: - case AMOVQ: - case AMOVB: - case AMOVW: - case AMOVBLSX: - case AMOVBLZX: - case AMOVBQSX: - case AMOVBQZX: - case AMOVLQSX: - case AMOVLQZX: - case AMOVWLSX: - case AMOVWLZX: - case AMOVWQSX: - case AMOVWQZX: - case AMOVQL: - - case AMOVSS: - case AMOVSD: - case ACVTSD2SL: - case ACVTSD2SQ: - case ACVTSD2SS: - case ACVTSL2SD: - case ACVTSL2SS: - case ACVTSQ2SD: - case ACVTSQ2SS: - case ACVTSS2SD: - case ACVTSS2SL: - case ACVTSS2SQ: - case ACVTTSD2SL: - case ACVTTSD2SQ: - case ACVTTSS2SL: - case ACVTTSS2SQ: - for(z=0; z<BITS; z++) - r->set.b[z] |= bit.b[z]; - break; - - /* - * right side read+write - */ - case AADDB: - case AADDL: - case AADDQ: - case AADDW: - case AANDB: - case AANDL: - case AANDQ: - case AANDW: - case ASUBB: - case ASUBL: - case ASUBQ: - case ASUBW: - case AORB: - case AORL: - case AORQ: - case AORW: - case AXORB: - case AXORL: - case AXORQ: - case AXORW: - case ASALB: - case ASALL: - case ASALQ: - case ASALW: - case ASARB: - case ASARL: - case ASARQ: - case ASARW: - case AROLB: - case AROLL: - case AROLQ: - case AROLW: - case ARORB: - case ARORL: - case ARORQ: - case ARORW: - case ASHLB: - case ASHLL: - case ASHLQ: - case ASHLW: - case ASHRB: - case ASHRL: - case ASHRQ: - case ASHRW: - case AIMULL: - case AIMULQ: - case AIMULW: - case ANEGL: - case ANEGQ: - case ANOTL: - case ANOTQ: - case AADCL: - case AADCQ: - case ASBBL: - case ASBBQ: - - case AADDSD: - case AADDSS: - case ACMPSD: - case ACMPSS: - case ADIVSD: - case ADIVSS: - case AMAXSD: - case AMAXSS: - case AMINSD: - case AMINSS: - case AMULSD: - case AMULSS: - case ARCPSS: - case ARSQRTSS: - case ASQRTSD: - case ASQRTSS: - case ASUBSD: - case ASUBSS: - case AXORPD: - for(z=0; z<BITS; z++) { - r->set.b[z] |= bit.b[z]; - r->use2.b[z] |= bit.b[z]; - } - break; - - /* - * funny - */ - case ACALL: - for(z=0; z<BITS; z++) - addrs.b[z] |= bit.b[z]; - break; - } - - switch(p->as) { - case AIMULL: - case AIMULQ: - case AIMULW: - if(p->to.type != D_NONE) - break; - - case AIDIVB: - case AIDIVL: - case AIDIVQ: - case AIDIVW: - case AIMULB: - case ADIVB: - case ADIVL: - case ADIVQ: - case ADIVW: - case AMULB: - case AMULL: - case AMULQ: - case AMULW: - - case ACWD: - case ACDQ: - case ACQO: - r->regu |= RtoB(D_AX) | RtoB(D_DX); - break; - - case AREP: - case AREPN: - case ALOOP: - case ALOOPEQ: - case ALOOPNE: - r->regu |= RtoB(D_CX); - break; - - case AMOVSB: - case AMOVSL: - case AMOVSQ: - case AMOVSW: - case ACMPSB: - case ACMPSL: - case ACMPSQ: - case ACMPSW: - r->regu |= RtoB(D_SI) | RtoB(D_DI); - break; - - case ASTOSB: - case ASTOSL: - case ASTOSQ: - case ASTOSW: - case ASCASB: - case ASCASL: - case ASCASQ: - case ASCASW: - r->regu |= RtoB(D_AX) | RtoB(D_DI); - break; - - case AINSB: - case AINSL: - case AINSW: - case AOUTSB: - case AOUTSL: - case AOUTSW: - r->regu |= RtoB(D_DI) | RtoB(D_DX); - break; - } - } - if(firstr == R) - return; - initpc = pc - val; - npc = val; - - /* - * pass 2 - * turn branch references to pointers - * build back pointers - */ - for(r = firstr; r != R; r = r->link) { - p = r->prog; - if(p->to.type == D_BRANCH) { - val = p->to.offset - initpc; - r1 = firstr; - while(r1 != R) { - r2 = r1->log5; - if(r2 != R && val >= r2->pc) { - r1 = r2; - continue; - } - if(r1->pc == val) - break; - r1 = r1->link; - } - if(r1 == R) { - nearln = p->lineno; - diag(Z, "ref not found\n%P", p); - continue; - } - if(r1 == r) { - nearln = p->lineno; - diag(Z, "ref to self\n%P", p); - continue; - } - r->s2 = r1; - r->p2link = r1->p2; - r1->p2 = r; - } - } - if(debug['R']) { - p = firstr->prog; - print("\n%L %D\n", p->lineno, &p->from); - } - - /* - * pass 2.1 - * fix jumps - */ - fixjmp(firstr); - - /* - * pass 2.5 - * find looping structure - */ - for(r = firstr; r != R; r = r->link) - r->active = 0; - change = 0; - loopit(firstr, npc); - if(debug['R'] && debug['v']) { - print("\nlooping structure:\n"); - for(r = firstr; r != R; r = r->link) { - print("%d:%P", r->loop, r->prog); - for(z=0; z<BITS; z++) - bit.b[z] = r->use1.b[z] | - r->use2.b[z] | - r->set.b[z]; - if(bany(&bit)) { - print("\t"); - if(bany(&r->use1)) - print(" u1=%B", r->use1); - if(bany(&r->use2)) - print(" u2=%B", r->use2); - if(bany(&r->set)) - print(" st=%B", r->set); - } - print("\n"); - } - } - - /* - * pass 3 - * iterate propagating usage - * back until flow graph is complete - */ -loop1: - change = 0; - for(r = firstr; r != R; r = r->link) - r->active = 0; - for(r = firstr; r != R; r = r->link) - if(r->prog->as == ARET) - prop(r, zbits, zbits); -loop11: - /* pick up unreachable code */ - i = 0; - for(r = firstr; r != R; r = r1) { - r1 = r->link; - if(r1 && r1->active && !r->active) { - prop(r, zbits, zbits); - i = 1; - } - } - if(i) - goto loop11; - if(change) - goto loop1; - - - /* - * pass 4 - * iterate propagating register/variable synchrony - * forward until graph is complete - */ -loop2: - change = 0; - for(r = firstr; r != R; r = r->link) - r->active = 0; - synch(firstr, zbits); - if(change) - goto loop2; - - - /* - * pass 5 - * isolate regions - * calculate costs (paint1) - */ - r = firstr; - if(r) { - for(z=0; z<BITS; z++) - bit.b[z] = (r->refahead.b[z] | r->calahead.b[z]) & - ~(externs.b[z] | params.b[z] | addrs.b[z] | consts.b[z]); - if(bany(&bit)) { - nearln = r->prog->lineno; - warn(Z, "used and not set: %B", bit); - if(debug['R'] && !debug['w']) - print("used and not set: %B\n", bit); - } - } - if(debug['R'] && debug['v']) - print("\nprop structure:\n"); - for(r = firstr; r != R; r = r->link) - r->act = zbits; - rgp = region; - nregion = 0; - for(r = firstr; r != R; r = r->link) { - if(debug['R'] && debug['v']) { - print("%P\t", r->prog); - if(bany(&r->set)) - print("s:%B ", r->set); - if(bany(&r->refahead)) - print("ra:%B ", r->refahead); - if(bany(&r->calahead)) - print("ca:%B ", r->calahead); - print("\n"); - } - for(z=0; z<BITS; z++) - bit.b[z] = r->set.b[z] & - ~(r->refahead.b[z] | r->calahead.b[z] | addrs.b[z]); - if(bany(&bit)) { - nearln = r->prog->lineno; - warn(Z, "set and not used: %B", bit); - if(debug['R']) - print("set and not used: %B\n", bit); - excise(r); - } - for(z=0; z<BITS; z++) - bit.b[z] = LOAD(r) & ~(r->act.b[z] | addrs.b[z]); - while(bany(&bit)) { - i = bnum(bit); - rgp->enter = r; - rgp->varno = i; - change = 0; - if(debug['R'] && debug['v']) - print("\n"); - paint1(r, i); - bit.b[i/32] &= ~(1L<<(i%32)); - if(change <= 0) { - if(debug['R']) - print("%L$%d: %B\n", - r->prog->lineno, change, blsh(i)); - continue; - } - rgp->cost = change; - nregion++; - if(nregion >= NRGN) - fatal(Z, "too many regions"); - rgp++; - } - } - qsort(region, nregion, sizeof(region[0]), rcmp); - - /* - * pass 6 - * determine used registers (paint2) - * replace code (paint3) - */ - rgp = region; - for(i=0; i<nregion; i++) { - bit = blsh(rgp->varno); - vreg = paint2(rgp->enter, rgp->varno); - vreg = allreg(vreg, rgp); - if(debug['R']) { - print("%L$%d %R: %B\n", - rgp->enter->prog->lineno, - rgp->cost, - rgp->regno, - bit); - } - if(rgp->regno != 0) - paint3(rgp->enter, rgp->varno, vreg, rgp->regno); - rgp++; - } - /* - * pass 7 - * peep-hole on basic block - */ - if(!debug['R'] || debug['P']) - peep(); - - /* - * pass 8 - * recalculate pc - */ - val = initpc; - for(r = firstr; r != R; r = r1) { - r->pc = val; - p = r->prog; - p1 = P; - r1 = r->link; - if(r1 != R) - p1 = r1->prog; - for(; p != p1; p = p->link) { - switch(p->as) { - default: - val++; - break; - - case ANOP: - case ADATA: - case AGLOBL: - case ANAME: - case ASIGNAME: - case AFUNCDATA: - break; - } - } - } - pc = val; - - /* - * fix up branches - */ - if(debug['R']) - if(bany(&addrs)) - print("addrs: %B\n", addrs); - - r1 = 0; /* set */ - for(r = firstr; r != R; r = r->link) { - p = r->prog; - if(p->to.type == D_BRANCH) { - p->to.offset = r->s2->pc; - p->to.u.branch = r->s2->prog; - } - r1 = r; - } - - /* - * last pass - * eliminate nops - * free aux structures - */ - for(p = firstr->prog; p != P; p = p->link){ - while(p->link && p->link->as == ANOP) - p->link = p->link->link; - } - if(r1 != R) { - r1->link = freer; - freer = firstr; - } -} - -/* - * add mov b,rn - * just after r - */ -void -addmove(Reg *r, int bn, int rn, int f) -{ - Prog *p, *p1; - Addr *a; - Var *v; - - p1 = alloc(sizeof(*p1)); - *p1 = zprog; - p = r->prog; - - p1->link = p->link; - p->link = p1; - p1->lineno = p->lineno; - - v = var + bn; - - a = &p1->to; - a->sym = v->sym; - a->offset = v->offset; - a->etype = v->etype; - a->type = v->name; - - p1->as = AMOVL; - if(v->etype == TCHAR || v->etype == TUCHAR) - p1->as = AMOVB; - if(v->etype == TSHORT || v->etype == TUSHORT) - p1->as = AMOVW; - if(v->etype == TVLONG || v->etype == TUVLONG || (v->etype == TIND && ewidth[TIND] == 8)) - p1->as = AMOVQ; - if(v->etype == TFLOAT) - p1->as = AMOVSS; - if(v->etype == TDOUBLE) - p1->as = AMOVSD; - - p1->from.type = rn; - if(!f) { - p1->from = *a; - *a = zprog.from; - a->type = rn; - if(v->etype == TUCHAR) - p1->as = AMOVB; - if(v->etype == TUSHORT) - p1->as = AMOVW; - } - if(debug['R']) - print("%P\t.a%P\n", p, p1); -} - -uint32 -doregbits(int r) -{ - uint32 b; - - b = 0; - if(r >= D_INDIR) - r -= D_INDIR; - if(r >= D_AX && r <= D_R15) - b |= RtoB(r); - else - if(r >= D_AL && r <= D_R15B) - b |= RtoB(r-D_AL+D_AX); - else - if(r >= D_AH && r <= D_BH) - b |= RtoB(r-D_AH+D_AX); - else - if(r >= D_X0 && r <= D_X0+15) - b |= FtoB(r); - return b; -} - -Bits -mkvar(Reg *r, Addr *a) -{ - Var *v; - int i, t, n, et, z; - int32 o; - Bits bit; - LSym *s; - - /* - * mark registers used - */ - t = a->type; - r->regu |= doregbits(t); - r->regu |= doregbits(a->index); - - switch(t) { - default: - goto none; - case D_ADDR: - a->type = a->index; - bit = mkvar(r, a); - for(z=0; z<BITS; z++) - addrs.b[z] |= bit.b[z]; - a->type = t; - goto none; - case D_EXTERN: - case D_STATIC: - case D_PARAM: - case D_AUTO: - n = t; - break; - } - s = a->sym; - if(s == nil) - goto none; - if(s->name[0] == '.') - goto none; - et = a->etype; - o = a->offset; - v = var; - for(i=0; i<nvar; i++) { - if(s == v->sym) - if(n == v->name) - if(o == v->offset) - goto out; - v++; - } - if(nvar >= NVAR) - fatal(Z, "variable not optimized: %s", s->name); - i = nvar; - nvar++; - v = &var[i]; - v->sym = s; - v->offset = o; - v->name = n; - v->etype = et; - if(debug['R']) - print("bit=%2d et=%2d %D\n", i, et, a); - -out: - bit = blsh(i); - if(n == D_EXTERN || n == D_STATIC) - for(z=0; z<BITS; z++) - externs.b[z] |= bit.b[z]; - if(n == D_PARAM) - for(z=0; z<BITS; z++) - params.b[z] |= bit.b[z]; - if(v->etype != et || !(typechlpfd[et] || typev[et])) /* funny punning */ - for(z=0; z<BITS; z++) - addrs.b[z] |= bit.b[z]; - return bit; - -none: - return zbits; -} - -void -prop(Reg *r, Bits ref, Bits cal) -{ - Reg *r1, *r2; - int z; - - for(r1 = r; r1 != R; r1 = r1->p1) { - for(z=0; z<BITS; z++) { - ref.b[z] |= r1->refahead.b[z]; - if(ref.b[z] != r1->refahead.b[z]) { - r1->refahead.b[z] = ref.b[z]; - change++; - } - cal.b[z] |= r1->calahead.b[z]; - if(cal.b[z] != r1->calahead.b[z]) { - r1->calahead.b[z] = cal.b[z]; - change++; - } - } - switch(r1->prog->as) { - case ACALL: - for(z=0; z<BITS; z++) { - cal.b[z] |= ref.b[z] | externs.b[z]; - ref.b[z] = 0; - } - break; - - case ATEXT: - for(z=0; z<BITS; z++) { - cal.b[z] = 0; - ref.b[z] = 0; - } - break; - - case ARET: - for(z=0; z<BITS; z++) { - cal.b[z] = externs.b[z]; - ref.b[z] = 0; - } - } - for(z=0; z<BITS; z++) { - ref.b[z] = (ref.b[z] & ~r1->set.b[z]) | - r1->use1.b[z] | r1->use2.b[z]; - cal.b[z] &= ~(r1->set.b[z] | r1->use1.b[z] | r1->use2.b[z]); - r1->refbehind.b[z] = ref.b[z]; - r1->calbehind.b[z] = cal.b[z]; - } - if(r1->active) - break; - r1->active = 1; - } - for(; r != r1; r = r->p1) - for(r2 = r->p2; r2 != R; r2 = r2->p2link) - prop(r2, r->refbehind, r->calbehind); -} - -/* - * find looping structure - * - * 1) find reverse postordering - * 2) find approximate dominators, - * the actual dominators if the flow graph is reducible - * otherwise, dominators plus some other non-dominators. - * See Matthew S. Hecht and Jeffrey D. Ullman, - * "Analysis of a Simple Algorithm for Global Data Flow Problems", - * Conf. Record of ACM Symp. on Principles of Prog. Langs, Boston, Massachusetts, - * Oct. 1-3, 1973, pp. 207-217. - * 3) find all nodes with a predecessor dominated by the current node. - * such a node is a loop head. - * recursively, all preds with a greater rpo number are in the loop - */ -int32 -postorder(Reg *r, Reg **rpo2r, int32 n) -{ - Reg *r1; - - r->rpo = 1; - r1 = r->s1; - if(r1 && !r1->rpo) - n = postorder(r1, rpo2r, n); - r1 = r->s2; - if(r1 && !r1->rpo) - n = postorder(r1, rpo2r, n); - rpo2r[n] = r; - n++; - return n; -} - -int32 -rpolca(int32 *idom, int32 rpo1, int32 rpo2) -{ - int32 t; - - if(rpo1 == -1) - return rpo2; - while(rpo1 != rpo2){ - if(rpo1 > rpo2){ - t = rpo2; - rpo2 = rpo1; - rpo1 = t; - } - while(rpo1 < rpo2){ - t = idom[rpo2]; - if(t >= rpo2) - fatal(Z, "bad idom"); - rpo2 = t; - } - } - return rpo1; -} - -int -doms(int32 *idom, int32 r, int32 s) -{ - while(s > r) - s = idom[s]; - return s == r; -} - -int -loophead(int32 *idom, Reg *r) -{ - int32 src; - - src = r->rpo; - if(r->p1 != R && doms(idom, src, r->p1->rpo)) - return 1; - for(r = r->p2; r != R; r = r->p2link) - if(doms(idom, src, r->rpo)) - return 1; - return 0; -} - -void -loopmark(Reg **rpo2r, int32 head, Reg *r) -{ - if(r->rpo < head || r->active == head) - return; - r->active = head; - r->loop += LOOP; - if(r->p1 != R) - loopmark(rpo2r, head, r->p1); - for(r = r->p2; r != R; r = r->p2link) - loopmark(rpo2r, head, r); -} - -void -loopit(Reg *r, int32 nr) -{ - Reg *r1; - int32 i, d, me; - - if(nr > maxnr) { - rpo2r = alloc(nr * sizeof(Reg*)); - idom = alloc(nr * sizeof(int32)); - maxnr = nr; - } - - d = postorder(r, rpo2r, 0); - if(d > nr) - fatal(Z, "too many reg nodes"); - nr = d; - for(i = 0; i < nr / 2; i++){ - r1 = rpo2r[i]; - rpo2r[i] = rpo2r[nr - 1 - i]; - rpo2r[nr - 1 - i] = r1; - } - for(i = 0; i < nr; i++) - rpo2r[i]->rpo = i; - - idom[0] = 0; - for(i = 0; i < nr; i++){ - r1 = rpo2r[i]; - me = r1->rpo; - d = -1; - if(r1->p1 != R && r1->p1->rpo < me) - d = r1->p1->rpo; - for(r1 = r1->p2; r1 != nil; r1 = r1->p2link) - if(r1->rpo < me) - d = rpolca(idom, d, r1->rpo); - idom[i] = d; - } - - for(i = 0; i < nr; i++){ - r1 = rpo2r[i]; - r1->loop++; - if(r1->p2 != R && loophead(idom, r1)) - loopmark(rpo2r, i, r1); - } -} - -void -synch(Reg *r, Bits dif) -{ - Reg *r1; - int z; - - for(r1 = r; r1 != R; r1 = r1->s1) { - for(z=0; z<BITS; z++) { - dif.b[z] = (dif.b[z] & - ~(~r1->refbehind.b[z] & r1->refahead.b[z])) | - r1->set.b[z] | r1->regdiff.b[z]; - if(dif.b[z] != r1->regdiff.b[z]) { - r1->regdiff.b[z] = dif.b[z]; - change++; - } - } - if(r1->active) - break; - r1->active = 1; - for(z=0; z<BITS; z++) - dif.b[z] &= ~(~r1->calbehind.b[z] & r1->calahead.b[z]); - if(r1->s2 != R) - synch(r1->s2, dif); - } -} - -uint32 -allreg(uint32 b, Rgn *r) -{ - Var *v; - int i; - - v = var + r->varno; - r->regno = 0; - switch(v->etype) { - - default: - diag(Z, "unknown etype %d/%d", bitno(b), v->etype); - break; - - case TCHAR: - case TUCHAR: - case TSHORT: - case TUSHORT: - case TINT: - case TUINT: - case TLONG: - case TULONG: - case TVLONG: - case TUVLONG: - case TIND: - case TARRAY: - i = BtoR(~b); - if(i && r->cost > 0) { - r->regno = i; - return RtoB(i); - } - break; - - case TDOUBLE: - case TFLOAT: - i = BtoF(~b); - if(i && r->cost > 0) { - r->regno = i; - return FtoB(i); - } - break; - } - return 0; -} - -void -paint1(Reg *r, int bn) -{ - Reg *r1; - Prog *p; - int z; - uint32 bb; - - z = bn/32; - bb = 1L<<(bn%32); - if(r->act.b[z] & bb) - return; - for(;;) { - if(!(r->refbehind.b[z] & bb)) - break; - r1 = r->p1; - if(r1 == R) - break; - if(!(r1->refahead.b[z] & bb)) - break; - if(r1->act.b[z] & bb) - break; - r = r1; - } - - if(LOAD(r) & ~(r->set.b[z]&~(r->use1.b[z]|r->use2.b[z])) & bb) { - change -= CLOAD * r->loop; - if(debug['R'] && debug['v']) - print("%d%P\td %B $%d\n", r->loop, - r->prog, blsh(bn), change); - } - for(;;) { - r->act.b[z] |= bb; - p = r->prog; - - if(r->use1.b[z] & bb) { - change += CREF * r->loop; - if(debug['R'] && debug['v']) - print("%d%P\tu1 %B $%d\n", r->loop, - p, blsh(bn), change); - } - - if((r->use2.b[z]|r->set.b[z]) & bb) { - change += CREF * r->loop; - if(debug['R'] && debug['v']) - print("%d%P\tu2 %B $%d\n", r->loop, - p, blsh(bn), change); - } - - if(STORE(r) & r->regdiff.b[z] & bb) { - change -= CLOAD * r->loop; - if(debug['R'] && debug['v']) - print("%d%P\tst %B $%d\n", r->loop, - p, blsh(bn), change); - } - - if(r->refbehind.b[z] & bb) - for(r1 = r->p2; r1 != R; r1 = r1->p2link) - if(r1->refahead.b[z] & bb) - paint1(r1, bn); - - if(!(r->refahead.b[z] & bb)) - break; - r1 = r->s2; - if(r1 != R) - if(r1->refbehind.b[z] & bb) - paint1(r1, bn); - r = r->s1; - if(r == R) - break; - if(r->act.b[z] & bb) - break; - if(!(r->refbehind.b[z] & bb)) - break; - } -} - -uint32 -regset(Reg *r, uint32 bb) -{ - uint32 b, set; - Addr v; - int c; - - set = 0; - v = zprog.from; - while(b = bb & ~(bb-1)) { - v.type = b & 0xFFFF? BtoR(b): BtoF(b); - if(v.type == 0) - diag(Z, "zero v.type for %#ux", b); - c = copyu(r->prog, &v, A); - if(c == 3) - set |= b; - bb &= ~b; - } - return set; -} - -uint32 -reguse(Reg *r, uint32 bb) -{ - uint32 b, set; - Addr v; - int c; - - set = 0; - v = zprog.from; - while(b = bb & ~(bb-1)) { - v.type = b & 0xFFFF? BtoR(b): BtoF(b); - c = copyu(r->prog, &v, A); - if(c == 1 || c == 2 || c == 4) - set |= b; - bb &= ~b; - } - return set; -} - -uint32 -paint2(Reg *r, int bn) -{ - Reg *r1; - int z; - uint32 bb, vreg, x; - - z = bn/32; - bb = 1L << (bn%32); - vreg = regbits; - if(!(r->act.b[z] & bb)) - return vreg; - for(;;) { - if(!(r->refbehind.b[z] & bb)) - break; - r1 = r->p1; - if(r1 == R) - break; - if(!(r1->refahead.b[z] & bb)) - break; - if(!(r1->act.b[z] & bb)) - break; - r = r1; - } - for(;;) { - r->act.b[z] &= ~bb; - - vreg |= r->regu; - - if(r->refbehind.b[z] & bb) - for(r1 = r->p2; r1 != R; r1 = r1->p2link) - if(r1->refahead.b[z] & bb) - vreg |= paint2(r1, bn); - - if(!(r->refahead.b[z] & bb)) - break; - r1 = r->s2; - if(r1 != R) - if(r1->refbehind.b[z] & bb) - vreg |= paint2(r1, bn); - r = r->s1; - if(r == R) - break; - if(!(r->act.b[z] & bb)) - break; - if(!(r->refbehind.b[z] & bb)) - break; - } - - bb = vreg; - for(; r; r=r->s1) { - x = r->regu & ~bb; - if(x) { - vreg |= reguse(r, x); - bb |= regset(r, x); - } - } - return vreg; -} - -void -paint3(Reg *r, int bn, int32 rb, int rn) -{ - Reg *r1; - Prog *p; - int z; - uint32 bb; - - z = bn/32; - bb = 1L << (bn%32); - if(r->act.b[z] & bb) - return; - for(;;) { - if(!(r->refbehind.b[z] & bb)) - break; - r1 = r->p1; - if(r1 == R) - break; - if(!(r1->refahead.b[z] & bb)) - break; - if(r1->act.b[z] & bb) - break; - r = r1; - } - - if(LOAD(r) & ~(r->set.b[z] & ~(r->use1.b[z]|r->use2.b[z])) & bb) - addmove(r, bn, rn, 0); - for(;;) { - r->act.b[z] |= bb; - p = r->prog; - - if(r->use1.b[z] & bb) { - if(debug['R']) - print("%P", p); - addreg(&p->from, rn); - if(debug['R']) - print("\t.c%P\n", p); - } - if((r->use2.b[z]|r->set.b[z]) & bb) { - if(debug['R']) - print("%P", p); - addreg(&p->to, rn); - if(debug['R']) - print("\t.c%P\n", p); - } - - if(STORE(r) & r->regdiff.b[z] & bb) - addmove(r, bn, rn, 1); - r->regu |= rb; - - if(r->refbehind.b[z] & bb) - for(r1 = r->p2; r1 != R; r1 = r1->p2link) - if(r1->refahead.b[z] & bb) - paint3(r1, bn, rb, rn); - - if(!(r->refahead.b[z] & bb)) - break; - r1 = r->s2; - if(r1 != R) - if(r1->refbehind.b[z] & bb) - paint3(r1, bn, rb, rn); - r = r->s1; - if(r == R) - break; - if(r->act.b[z] & bb) - break; - if(!(r->refbehind.b[z] & bb)) - break; - } -} - -void -addreg(Addr *a, int rn) -{ - - a->sym = 0; - a->offset = 0; - a->type = rn; -} - -int32 -RtoB(int r) -{ - - if(r < D_AX || r > D_R15) - return 0; - return 1L << (r-D_AX); -} - -int -BtoR(int32 b) -{ - - b &= 0xffffL; - if(nacl) - b &= ~((1<<(D_BP-D_AX)) | (1<<(D_R15-D_AX))); - if(b == 0) - return 0; - return bitno(b) + D_AX; -} - -/* - * bit reg - * 16 X5 - * 17 X6 - * 18 X7 - */ -int32 -FtoB(int f) -{ - if(f < FREGMIN || f > FREGEXT) - return 0; - return 1L << (f - FREGMIN + 16); -} - -int -BtoF(int32 b) -{ - - b &= 0x70000L; - if(b == 0) - return 0; - return bitno(b) - 16 + FREGMIN; -} - -/* what instruction does a JMP to p eventually land on? */ -static Reg* -chasejmp(Reg *r, int *jmploop) -{ - int n; - - n = 0; - for(; r; r=r->s2) { - if(r->prog->as != AJMP || r->prog->to.type != D_BRANCH) - break; - if(++n > 10) { - *jmploop = 1; - break; - } - } - return r; -} - -/* mark all code reachable from firstp as alive */ -static void -mark(Reg *firstr) -{ - Reg *r; - Prog *p; - - for(r=firstr; r; r=r->link) { - if(r->active) - break; - r->active = 1; - p = r->prog; - if(p->as != ACALL && p->to.type == D_BRANCH) - mark(r->s2); - if(p->as == AJMP || p->as == ARET || p->as == AUNDEF) - break; - } -} - -/* - * the code generator depends on being able to write out JMP - * instructions that it can jump to now but fill in later. - * the linker will resolve them nicely, but they make the code - * longer and more difficult to follow during debugging. - * remove them. - */ -static void -fixjmp(Reg *firstr) -{ - int jmploop; - Reg *r; - Prog *p; - - if(debug['R'] && debug['v']) - print("\nfixjmp\n"); - - // pass 1: resolve jump to AJMP, mark all code as dead. - jmploop = 0; - for(r=firstr; r; r=r->link) { - p = r->prog; - if(debug['R'] && debug['v']) - print("%04d %P\n", (int)r->pc, p); - if(p->as != ACALL && p->to.type == D_BRANCH && r->s2 && r->s2->prog->as == AJMP) { - r->s2 = chasejmp(r->s2, &jmploop); - p->to.offset = r->s2->pc; - p->to.u.branch = r->s2->prog; - if(debug['R'] && debug['v']) - print("->%P\n", p); - } - r->active = 0; - } - if(debug['R'] && debug['v']) - print("\n"); - - // pass 2: mark all reachable code alive - mark(firstr); - - // pass 3: delete dead code (mostly JMPs). - for(r=firstr; r; r=r->link) { - if(!r->active) { - p = r->prog; - if(p->link == P && p->as == ARET && r->p1 && r->p1->prog->as != ARET) { - // This is the final ARET, and the code so far doesn't have one. - // Let it stay. - } else { - if(debug['R'] && debug['v']) - print("del %04d %P\n", (int)r->pc, p); - p->as = ANOP; - } - } - } - - // pass 4: elide JMP to next instruction. - // only safe if there are no jumps to JMPs anymore. - if(!jmploop) { - for(r=firstr; r; r=r->link) { - p = r->prog; - if(p->as == AJMP && p->to.type == D_BRANCH && r->s2 == r->link) { - if(debug['R'] && debug['v']) - print("del %04d %P\n", (int)r->pc, p); - p->as = ANOP; - } - } - } - - // fix back pointers. - for(r=firstr; r; r=r->link) { - r->p2 = R; - r->p2link = R; - } - for(r=firstr; r; r=r->link) { - if(r->s2) { - r->p2link = r->s2->p2; - r->s2->p2 = r; - } - } - - if(debug['R'] && debug['v']) { - print("\n"); - for(r=firstr; r; r=r->link) - print("%04d %P\n", (int)r->pc, r->prog); - print("\n"); - } -} - diff --git a/src/cmd/6c/sgen.c b/src/cmd/6c/sgen.c deleted file mode 100644 index fceb332b2..000000000 --- a/src/cmd/6c/sgen.c +++ /dev/null @@ -1,483 +0,0 @@ -// Inferno utils/6c/sgen.c -// http://code.google.com/p/inferno-os/source/browse/utils/6c/sgen.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" -#include "../../runtime/funcdata.h" - -Prog* -gtext(Sym *s, int32 stkoff) -{ - vlong v; - - v = ((uvlong)argsize(1) << 32) | (stkoff & 0xffffffff); - if((textflag & NOSPLIT) && stkoff >= 128) - yyerror("stack frame too large for NOSPLIT function"); - - gpseudo(ATEXT, s, nodgconst(v, types[TVLONG])); - return p; -} - -void -noretval(int n) -{ - - if(n & 1) { - gins(ANOP, Z, Z); - p->to.type = REGRET; - } - if(n & 2) { - gins(ANOP, Z, Z); - p->to.type = FREGRET; - } -} - -/* welcome to commute */ -static void -commute(Node *n) -{ - Node *l, *r; - - l = n->left; - r = n->right; - if(r->complex > l->complex) { - n->left = r; - n->right = l; - } -} - -void -indexshift(Node *n) -{ - int g; - - if(!typechlpv[n->type->etype]) - return; - simplifyshift(n); - if(n->op == OASHL && n->right->op == OCONST){ - g = vconst(n->right); - if(g >= 0 && g <= 3) - n->addable = 7; - } -} - -/* - * calculate addressability as follows - * NAME ==> 10/11 name+value(SB/SP) - * REGISTER ==> 12 register - * CONST ==> 20 $value - * *(20) ==> 21 value - * &(10) ==> 13 $name+value(SB) - * &(11) ==> 1 $name+value(SP) - * (13) + (20) ==> 13 fold constants - * (1) + (20) ==> 1 fold constants - * *(13) ==> 10 back to name - * *(1) ==> 11 back to name - * - * (20) * (X) ==> 7 multiplier in indexing - * (X,7) + (13,1) ==> 8 adder in indexing (addresses) - * (8) ==> &9(OINDEX) index, almost addressable - * - * calculate complexity (number of registers) - */ -void -xcom(Node *n) -{ - Node *l, *r; - int g; - - if(n == Z) - return; - l = n->left; - r = n->right; - n->complex = 0; - n->addable = 0; - switch(n->op) { - case OCONST: - n->addable = 20; - break; - - case ONAME: - n->addable = 9; - if(n->class == CPARAM || n->class == CAUTO) - n->addable = 11; - break; - - case OEXREG: - n->addable = 0; - break; - - case OREGISTER: - n->addable = 12; - break; - - case OINDREG: - n->addable = 12; - break; - - case OADDR: - xcom(l); - if(l->addable == 10) - n->addable = 13; - else - if(l->addable == 11) - n->addable = 1; - break; - - case OADD: - xcom(l); - xcom(r); - if(n->type->etype != TIND) - break; - - switch(r->addable) { - case 20: - switch(l->addable) { - case 1: - case 13: - commadd: - l->type = n->type; - *n = *l; - l = new(0, Z, Z); - *l = *(n->left); - l->xoffset += r->vconst; - n->left = l; - r = n->right; - goto brk; - } - break; - - case 1: - case 13: - case 10: - case 11: - /* l is the base, r is the index */ - if(l->addable != 20) - n->addable = 8; - break; - } - switch(l->addable) { - case 20: - switch(r->addable) { - case 13: - case 1: - r = n->left; - l = n->right; - n->left = l; - n->right = r; - goto commadd; - } - break; - - case 13: - case 1: - case 10: - case 11: - /* r is the base, l is the index */ - if(r->addable != 20) - n->addable = 8; - break; - } - if(n->addable == 8 && !side(n) && !nacl) { - indx(n); - l = new1(OINDEX, idx.basetree, idx.regtree); - l->scale = idx.scale; - l->addable = 9; - l->complex = l->right->complex; - l->type = l->left->type; - n->op = OADDR; - n->left = l; - n->right = Z; - n->addable = 8; - break; - } - break; - - case OINDEX: - xcom(l); - xcom(r); - n->addable = 9; - break; - - case OIND: - xcom(l); - if(l->op == OADDR) { - l = l->left; - l->type = n->type; - *n = *l; - return; - } - switch(l->addable) { - case 20: - n->addable = 21; - break; - case 1: - n->addable = 11; - break; - case 13: - n->addable = 10; - break; - } - break; - - case OASHL: - xcom(l); - xcom(r); - indexshift(n); - break; - - case OMUL: - case OLMUL: - xcom(l); - xcom(r); - g = vlog(l); - if(g >= 0) { - n->left = r; - n->right = l; - l = r; - r = n->right; - } - g = vlog(r); - if(g >= 0) { - n->op = OASHL; - r->vconst = g; - r->type = types[TINT]; - indexshift(n); - break; - } - commute(n); - break; - - case OASLDIV: - xcom(l); - xcom(r); - g = vlog(r); - if(g >= 0) { - n->op = OASLSHR; - r->vconst = g; - r->type = types[TINT]; - } - break; - - case OLDIV: - xcom(l); - xcom(r); - g = vlog(r); - if(g >= 0) { - n->op = OLSHR; - r->vconst = g; - r->type = types[TINT]; - indexshift(n); - break; - } - break; - - case OASLMOD: - xcom(l); - xcom(r); - g = vlog(r); - if(g >= 0) { - n->op = OASAND; - r->vconst--; - } - break; - - case OLMOD: - xcom(l); - xcom(r); - g = vlog(r); - if(g >= 0) { - n->op = OAND; - r->vconst--; - } - break; - - case OASMUL: - case OASLMUL: - xcom(l); - xcom(r); - g = vlog(r); - if(g >= 0) { - n->op = OASASHL; - r->vconst = g; - } - break; - - case OLSHR: - case OASHR: - xcom(l); - xcom(r); - indexshift(n); - break; - - default: - if(l != Z) - xcom(l); - if(r != Z) - xcom(r); - break; - } -brk: - if(n->addable >= 10) - return; - if(l != Z) - n->complex = l->complex; - if(r != Z) { - if(r->complex == n->complex) - n->complex = r->complex+1; - else - if(r->complex > n->complex) - n->complex = r->complex; - } - if(n->complex == 0) - n->complex++; - - switch(n->op) { - - case OFUNC: - n->complex = FNX; - break; - - case OCAST: - if(l->type->etype == TUVLONG && typefd[n->type->etype]) - n->complex += 2; - break; - - case OLMOD: - case OMOD: - case OLMUL: - case OLDIV: - case OMUL: - case ODIV: - case OASLMUL: - case OASLDIV: - case OASLMOD: - case OASMUL: - case OASDIV: - case OASMOD: - if(r->complex >= l->complex) { - n->complex = l->complex + 3; - if(r->complex > n->complex) - n->complex = r->complex; - } else { - n->complex = r->complex + 3; - if(l->complex > n->complex) - n->complex = l->complex; - } - break; - - case OLSHR: - case OASHL: - case OASHR: - case OASLSHR: - case OASASHL: - case OASASHR: - if(r->complex >= l->complex) { - n->complex = l->complex + 2; - if(r->complex > n->complex) - n->complex = r->complex; - } else { - n->complex = r->complex + 2; - if(l->complex > n->complex) - n->complex = l->complex; - } - break; - - case OADD: - case OXOR: - case OAND: - case OOR: - /* - * immediate operators, make const on right - */ - if(l->op == OCONST) { - n->left = r; - n->right = l; - } - break; - - case OEQ: - case ONE: - case OLE: - case OLT: - case OGE: - case OGT: - case OHI: - case OHS: - case OLO: - case OLS: - /* - * compare operators, make const on left - */ - if(r->op == OCONST) { - n->left = r; - n->right = l; - n->op = invrel[relindex(n->op)]; - } - break; - } -} - -void -indx(Node *n) -{ - Node *l, *r; - - if(debug['x']) - prtree(n, "indx"); - - l = n->left; - r = n->right; - if(l->addable == 1 || l->addable == 13 || r->complex > l->complex) { - n->right = l; - n->left = r; - l = r; - r = n->right; - } - if(l->addable != 7) { - idx.regtree = l; - idx.scale = 1; - } else - if(l->right->addable == 20) { - idx.regtree = l->left; - idx.scale = 1 << l->right->vconst; - } else - if(l->left->addable == 20) { - idx.regtree = l->right; - idx.scale = 1 << l->left->vconst; - } else - diag(n, "bad index"); - - idx.basetree = r; - if(debug['x']) { - print("scale = %d\n", idx.scale); - prtree(idx.regtree, "index"); - prtree(idx.basetree, "base"); - } -} diff --git a/src/cmd/6c/swt.c b/src/cmd/6c/swt.c deleted file mode 100644 index 6e918eb10..000000000 --- a/src/cmd/6c/swt.c +++ /dev/null @@ -1,353 +0,0 @@ -// Inferno utils/6c/swt.c -// http://code.google.com/p/inferno-os/source/browse/utils/6c/swt.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -void -swit1(C1 *q, int nc, int32 def, Node *n) -{ - Node nreg; - - regalloc(&nreg, n, Z); - if(typev[n->type->etype]) - nreg.type = types[TVLONG]; - else - nreg.type = types[TLONG]; - cgen(n, &nreg); - swit2(q, nc, def, &nreg); - regfree(&nreg); -} - -void -swit2(C1 *q, int nc, int32 def, Node *n) -{ - C1 *r; - int i; - Prog *sp; - - if(nc < 5) { - for(i=0; i<nc; i++) { - if(debug['W']) - print("case = %.8llux\n", q->val); - gcmp(OEQ, n, q->val); - patch(p, q->label); - q++; - } - gbranch(OGOTO); - patch(p, def); - return; - } - i = nc / 2; - r = q+i; - if(debug['W']) - print("case > %.8llux\n", r->val); - gcmp(OGT, n, r->val); - sp = p; - gbranch(OGOTO); - p->as = AJEQ; - patch(p, r->label); - swit2(q, i, def, n); - - if(debug['W']) - print("case < %.8llux\n", r->val); - patch(sp, pc); - swit2(r+1, nc-i-1, def, n); -} - -void -bitload(Node *b, Node *n1, Node *n2, Node *n3, Node *nn) -{ - int sh; - int32 v; - Node *l; - - /* - * n1 gets adjusted/masked value - * n2 gets address of cell - * n3 gets contents of cell - */ - l = b->left; - if(n2 != Z) { - regalloc(n1, l, nn); - reglcgen(n2, l, Z); - regalloc(n3, l, Z); - gmove(n2, n3); - gmove(n3, n1); - } else { - regalloc(n1, l, nn); - cgen(l, n1); - } - if(b->type->shift == 0 && typeu[b->type->etype]) { - v = ~0 + (1L << b->type->nbits); - gopcode(OAND, tfield, nodconst(v), n1); - } else { - sh = 32 - b->type->shift - b->type->nbits; - if(sh > 0) - gopcode(OASHL, tfield, nodconst(sh), n1); - sh += b->type->shift; - if(sh > 0) - if(typeu[b->type->etype]) - gopcode(OLSHR, tfield, nodconst(sh), n1); - else - gopcode(OASHR, tfield, nodconst(sh), n1); - } -} - -void -bitstore(Node *b, Node *n1, Node *n2, Node *n3, Node *nn) -{ - int32 v; - Node nod; - int sh; - - regalloc(&nod, b->left, Z); - v = ~0 + (1L << b->type->nbits); - gopcode(OAND, types[TLONG], nodconst(v), n1); - gmove(n1, &nod); - if(nn != Z) - gmove(n1, nn); - sh = b->type->shift; - if(sh > 0) - gopcode(OASHL, types[TLONG], nodconst(sh), &nod); - v <<= sh; - gopcode(OAND, types[TLONG], nodconst(~v), n3); - gopcode(OOR, types[TLONG], n3, &nod); - gmove(&nod, n2); - - regfree(&nod); - regfree(n1); - regfree(n2); - regfree(n3); -} - -int32 -outstring(char *s, int32 n) -{ - int32 r; - - if(suppress) - return nstring; - r = nstring; - while(n) { - string[mnstring] = *s++; - mnstring++; - nstring++; - if(mnstring >= NSNAME) { - gpseudo(ADATA, symstring, nodconst(0L)); - p->from.offset += nstring - NSNAME; - p->from.scale = NSNAME; - p->to.type = D_SCONST; - memmove(p->to.u.sval, string, NSNAME); - mnstring = 0; - } - n--; - } - return r; -} - -void -sextern(Sym *s, Node *a, int32 o, int32 w) -{ - int32 e, lw; - - for(e=0; e<w; e+=NSNAME) { - lw = NSNAME; - if(w-e < lw) - lw = w-e; - gpseudo(ADATA, s, nodconst(0L)); - p->from.offset += o+e; - p->from.scale = lw; - p->to.type = D_SCONST; - memmove(p->to.u.sval, a->cstring+e, lw); - } -} - -void -gextern(Sym *s, Node *a, int32 o, int32 w) -{ - if(0 && a->op == OCONST && typev[a->type->etype]) { - gpseudo(ADATA, s, lo64(a)); - p->from.offset += o; - p->from.scale = 4; - gpseudo(ADATA, s, hi64(a)); - p->from.offset += o + 4; - p->from.scale = 4; - return; - } - gpseudo(ADATA, s, a); - p->from.offset += o; - p->from.scale = w; - switch(p->to.type) { - default: - p->to.index = p->to.type; - p->to.type = D_ADDR; - case D_CONST: - case D_FCONST: - case D_ADDR: - break; - } -} - -void -outcode(void) -{ - int f; - Biobuf b; - - f = open(outfile, OWRITE); - if(f < 0) { - diag(Z, "cannot open %s", outfile); - return; - } - Binit(&b, f, OWRITE); - - Bprint(&b, "go object %s %s %s\n", getgoos(), getgoarch(), getgoversion()); - if(pragcgobuf.to > pragcgobuf.start) { - Bprint(&b, "\n"); - Bprint(&b, "$$ // exports\n\n"); - Bprint(&b, "$$ // local types\n\n"); - Bprint(&b, "$$ // cgo\n"); - Bprint(&b, "%s", fmtstrflush(&pragcgobuf)); - Bprint(&b, "\n$$\n\n"); - } - Bprint(&b, "!\n"); - - writeobj(ctxt, &b); - Bterm(&b); - close(f); - lastp = P; -} - -int32 -align(int32 i, Type *t, int op, int32 *maxalign) -{ - int32 o; - Type *v; - int w, packw; - - o = i; - w = 1; - packw = 0; - switch(op) { - default: - diag(Z, "unknown align opcode %d", op); - break; - - case Asu2: /* padding at end of a struct */ - w = *maxalign; - if(w < 1) - w = 1; - if(packflg) - packw = packflg; - break; - - case Ael1: /* initial align of struct element */ - for(v=t; v->etype==TARRAY; v=v->link) - ; - if(v->etype == TSTRUCT || v->etype == TUNION) - w = v->align; - else - w = ewidth[v->etype]; - if(w < 1 || w > SZ_VLONG) - fatal(Z, "align"); - if(packflg) - packw = packflg; - break; - - case Ael2: /* width of a struct element */ - o += t->width; - break; - - case Aarg0: /* initial passbyptr argument in arg list */ - if(typesu[t->etype]) { - o = align(o, types[TIND], Aarg1, nil); - o = align(o, types[TIND], Aarg2, nil); - } - break; - - case Aarg1: /* initial align of parameter */ - if(ewidth[TIND] == 4) { - if(typesu[t->etype]) { - for(v = t->link; v != T; v = v->down) - o = align(o, v, Aarg1, maxalign); - goto out; - } - w = ewidth[t->etype]; - if(typev[t->etype] || t->etype == TDOUBLE) - w = 8; - else if(w <= 0 || w >= 4) - w = 4; - else - w = 1; - break; - } - w = ewidth[t->etype]; - if(w <= 0 || w >= SZ_VLONG) { - w = SZ_VLONG; - break; - } - w = 1; /* little endian no adjustment */ - break; - - case Aarg2: /* width of a parameter */ - o += t->width; - if(ewidth[TIND] == 4) { - o = align(o, t, Aarg1, maxalign); - goto out; - } - w = t->width; - if(w > SZ_VLONG) - w = SZ_VLONG; - break; - - case Aaut3: /* total align of automatic */ - o = align(o, t, Ael1, nil); - o = align(o, t, Ael2, nil); - break; - } - if(packw != 0 && xround(o, w) != xround(o, packw)) - diag(Z, "#pragma pack changes offset of %T", t); - o = xround(o, w); - if(maxalign && *maxalign < w) - *maxalign = w; -out: - if(debug['A']) - print("align %s %d %T = %d\n", bnames[op], i, t, o); - return o; -} - -int32 -maxround(int32 max, int32 v) -{ - v = xround(v, SZ_VLONG); - if(v > max) - return v; - return max; -} diff --git a/src/cmd/6c/txt.c b/src/cmd/6c/txt.c deleted file mode 100644 index 3bdbf410e..000000000 --- a/src/cmd/6c/txt.c +++ /dev/null @@ -1,1674 +0,0 @@ -// Inferno utils/6c/txt.c -// http://code.google.com/p/inferno-os/source/browse/utils/6c/txt.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -int thechar = '6'; -char *thestring = "amd64"; - -LinkArch *thelinkarch = &linkamd64; - -void -linkarchinit(void) -{ - if(strcmp(getgoarch(), "amd64p32") == 0) - thelinkarch = &linkamd64p32; -} - -void -ginit(void) -{ - int i; - Type *t; - - dodefine("_64BITREG"); - if(ewidth[TIND] == 8) - dodefine("_64BIT"); - listinit(); - nstring = 0; - mnstring = 0; - nrathole = 0; - pc = 0; - breakpc = -1; - continpc = -1; - cases = C; - lastp = P; - tfield = types[TINT]; - - typeword = typechlvp; - typecmplx = typesu; - - /* TO DO */ - memmove(typechlpv, typechlp, sizeof(typechlpv)); - typechlpv[TVLONG] = 1; - typechlpv[TUVLONG] = 1; - - zprog.link = P; - zprog.as = AGOK; - zprog.from.type = D_NONE; - zprog.from.index = D_NONE; - zprog.from.scale = 0; - zprog.to = zprog.from; - - lregnode.op = OREGISTER; - lregnode.class = CEXREG; - lregnode.reg = REGTMP; - lregnode.complex = 0; - lregnode.addable = 11; - lregnode.type = types[TLONG]; - - qregnode = lregnode; - qregnode.type = types[TVLONG]; - - constnode.op = OCONST; - constnode.class = CXXX; - constnode.complex = 0; - constnode.addable = 20; - constnode.type = types[TLONG]; - - vconstnode = constnode; - vconstnode.type = types[TVLONG]; - - fconstnode.op = OCONST; - fconstnode.class = CXXX; - fconstnode.complex = 0; - fconstnode.addable = 20; - fconstnode.type = types[TDOUBLE]; - - nodsafe = new(ONAME, Z, Z); - nodsafe->sym = slookup(".safe"); - nodsafe->type = types[TINT]; - nodsafe->etype = types[TINT]->etype; - nodsafe->class = CAUTO; - complex(nodsafe); - - t = typ(TARRAY, types[TCHAR]); - symrathole = slookup(".rathole"); - symrathole->class = CGLOBL; - symrathole->type = t; - - nodrat = new(ONAME, Z, Z); - nodrat->sym = symrathole; - nodrat->type = types[TIND]; - nodrat->etype = TVOID; - nodrat->class = CGLOBL; - complex(nodrat); - nodrat->type = t; - - nodret = new(ONAME, Z, Z); - nodret->sym = slookup(".ret"); - nodret->type = types[TIND]; - nodret->etype = TIND; - nodret->class = CPARAM; - nodret = new(OIND, nodret, Z); - complex(nodret); - - if(0) - com64init(); - - for(i=0; i<nelem(reg); i++) { - reg[i] = 1; - if(i >= D_AX && i <= D_R15 && i != D_SP) - reg[i] = 0; - if(i >= D_X0 && i <= D_X7) - reg[i] = 0; - } - if(nacl) { - reg[D_BP] = 1; - reg[D_R15] = 1; - } -} - -void -gclean(void) -{ - int i; - Sym *s; - - reg[D_SP]--; - if(nacl) { - reg[D_BP]--; - reg[D_R15]--; - } - for(i=D_AX; i<=D_R15; i++) - if(reg[i]) - diag(Z, "reg %R left allocated", i); - for(i=D_X0; i<=D_X7; i++) - if(reg[i]) - diag(Z, "reg %R left allocated", i); - while(mnstring) - outstring("", 1L); - symstring->type->width = nstring; - symrathole->type->width = nrathole; - for(i=0; i<NHASH; i++) - for(s = hash[i]; s != S; s = s->link) { - if(s->type == T) - continue; - if(s->type->width == 0) - continue; - if(s->class != CGLOBL && s->class != CSTATIC) - continue; - if(s->type == types[TENUM]) - continue; - gpseudo(AGLOBL, s, nodconst(s->type->width)); - } - nextpc(); - p->as = AEND; - outcode(); -} - -void -nextpc(void) -{ - Plist *pl; - - p = alloc(sizeof(*p)); - *p = zprog; - p->lineno = nearln; - p->pc = pc; - pc++; - if(lastp == nil) { - pl = linknewplist(ctxt); - pl->firstpc = p; - } else - lastp->link = p; - lastp = p; -} - -void -gargs(Node *n, Node *tn1, Node *tn2) -{ - int32 regs; - Node fnxargs[20], *fnxp; - - regs = cursafe; - - fnxp = fnxargs; - garg1(n, tn1, tn2, 0, &fnxp); /* compile fns to temps */ - - curarg = 0; - fnxp = fnxargs; - garg1(n, tn1, tn2, 1, &fnxp); /* compile normal args and temps */ - - cursafe = regs; -} - -int -nareg(void) -{ - int i, n; - - n = 0; - for(i=D_AX; i<=D_R15; i++) - if(reg[i] == 0) - n++; - return n; -} - -void -garg1(Node *n, Node *tn1, Node *tn2, int f, Node **fnxp) -{ - Node nod; - - if(n == Z) - return; - if(n->op == OLIST) { - garg1(n->left, tn1, tn2, f, fnxp); - garg1(n->right, tn1, tn2, f, fnxp); - return; - } - if(f == 0) { - if(n->complex >= FNX) { - regsalloc(*fnxp, n); - nod = znode; - nod.op = OAS; - nod.left = *fnxp; - nod.right = n; - nod.type = n->type; - cgen(&nod, Z); - (*fnxp)++; - } - return; - } - if(typesu[n->type->etype]) { - regaalloc(tn2, n); - if(n->complex >= FNX) { - sugen(*fnxp, tn2, n->type->width); - (*fnxp)++; - } else - sugen(n, tn2, n->type->width); - return; - } - if(REGARG >= 0 && curarg == 0 && typechlpv[n->type->etype]) { - regaalloc1(tn1, n); - if(n->complex >= FNX) { - cgen(*fnxp, tn1); - (*fnxp)++; - } else - cgen(n, tn1); - return; - } - if(vconst(n) == 0) { - regaalloc(tn2, n); - gmove(n, tn2); - return; - } - regalloc(tn1, n, Z); - if(n->complex >= FNX) { - cgen(*fnxp, tn1); - (*fnxp)++; - } else - cgen(n, tn1); - regaalloc(tn2, n); - gmove(tn1, tn2); - regfree(tn1); -} - -Node* -nodgconst(vlong v, Type *t) -{ - if(!typev[t->etype]) - return nodconst((int32)v); - vconstnode.vconst = v; - return &vconstnode; -} - -Node* -nodconst(int32 v) -{ - constnode.vconst = v; - return &constnode; -} - -Node* -nodfconst(double d) -{ - fconstnode.fconst = d; - return &fconstnode; -} - -int -isreg(Node *n, int r) -{ - - if(n->op == OREGISTER) - if(n->reg == r) - return 1; - return 0; -} - -int -nodreg(Node *n, Node *nn, int r) -{ - int et; - - *n = qregnode; - n->reg = r; - if(nn != Z){ - et = nn->type->etype; - if(!typefd[et] && nn->type->width <= SZ_LONG && 0) - n->type = typeu[et]? types[TUINT]: types[TINT]; - else - n->type = nn->type; -//print("nodreg %s [%s]\n", tnames[et], tnames[n->type->etype]); - n->lineno = nn->lineno; - } - if(reg[r] == 0) - return 0; - if(nn != Z) { - if(nn->op == OREGISTER) - if(nn->reg == r) - return 0; - } - return 1; -} - -void -regret(Node *n, Node *nn, Type *t, int mode) -{ - int r; - - if(mode == 0 || hasdotdotdot(t) || nn->type->width == 0) { - r = REGRET; - if(typefd[nn->type->etype]) - r = FREGRET; - nodreg(n, nn, r); - reg[r]++; - return; - } - - if(mode == 1) { - // fetch returned value after call. - // already called gargs, so curarg is set. - curarg = (curarg+7) & ~7; - regaalloc(n, nn); - return; - } - - if(mode == 2) { - // store value to be returned. - // must compute arg offset. - if(t->etype != TFUNC) - fatal(Z, "bad regret func %T", t); - *n = *nn; - n->op = ONAME; - n->class = CPARAM; - n->sym = slookup(".ret"); - n->complex = nodret->complex; - n->addable = 20; - n->xoffset = argsize(0); - return; - } - - fatal(Z, "bad regret"); -} - -void -regalloc(Node *n, Node *tn, Node *o) -{ - int i; - - switch(tn->type->etype) { - case TCHAR: - case TUCHAR: - case TSHORT: - case TUSHORT: - case TINT: - case TUINT: - case TLONG: - case TULONG: - case TVLONG: - case TUVLONG: - case TIND: - if(o != Z && o->op == OREGISTER) { - i = o->reg; - if(i >= D_AX && i <= D_R15) - goto out; - } - for(i=D_AX; i<=D_R15; i++) - if(reg[i] == 0) - goto out; - diag(tn, "out of fixed registers"); - goto err; - - case TFLOAT: - case TDOUBLE: - if(o != Z && o->op == OREGISTER) { - i = o->reg; - if(i >= D_X0 && i <= D_X7) - goto out; - } - for(i=D_X0; i<=D_X7; i++) - if(reg[i] == 0) - goto out; - diag(tn, "out of float registers"); - goto out; - } - diag(tn, "unknown type in regalloc: %T", tn->type); -err: - i = 0; -out: - if(i) - reg[i]++; - nodreg(n, tn, i); -} - -void -regialloc(Node *n, Node *tn, Node *o) -{ - Node nod; - - nod = *tn; - nod.type = types[TIND]; - regalloc(n, &nod, o); -} - -void -regfree(Node *n) -{ - int i; - - i = 0; - if(n->op != OREGISTER && n->op != OINDREG) - goto err; - i = n->reg; - if(i < 0 || i >= nelem(reg)) - goto err; - if(reg[i] <= 0) - goto err; - reg[i]--; - return; -err: - diag(n, "error in regfree: %R", i); -} - -void -regsalloc(Node *n, Node *nn) -{ - cursafe = align(cursafe, nn->type, Aaut3, nil); - maxargsafe = maxround(maxargsafe, cursafe+curarg); - *n = *nodsafe; - n->xoffset = -(stkoff + cursafe); - n->type = nn->type; - n->etype = nn->type->etype; - n->lineno = nn->lineno; -} - -void -regaalloc1(Node *n, Node *nn) -{ - if(REGARG < 0) { - fatal(n, "regaalloc1 and REGARG<0"); - return; - } - nodreg(n, nn, REGARG); - reg[(uchar)REGARG]++; - curarg = align(curarg, nn->type, Aarg1, nil); - curarg = align(curarg, nn->type, Aarg2, nil); - maxargsafe = maxround(maxargsafe, cursafe+curarg); -} - -void -regaalloc(Node *n, Node *nn) -{ - curarg = align(curarg, nn->type, Aarg1, nil); - *n = *nn; - n->op = OINDREG; - n->reg = REGSP; - n->xoffset = curarg; - n->complex = 0; - n->addable = 20; - curarg = align(curarg, nn->type, Aarg2, nil); - maxargsafe = maxround(maxargsafe, cursafe+curarg); -} - -void -regind(Node *n, Node *nn) -{ - - if(n->op != OREGISTER) { - diag(n, "regind not OREGISTER"); - return; - } - n->op = OINDREG; - n->type = nn->type; -} - -void -naddr(Node *n, Addr *a) -{ - int32 v; - - a->type = D_NONE; - if(n == Z) - return; - switch(n->op) { - default: - bad: - diag(n, "bad in naddr: %O %D", n->op, a); - break; - - case OREGISTER: - a->type = n->reg; - a->sym = nil; - break; - - case OEXREG: - a->type = D_INDIR + D_TLS; - a->offset = n->reg - 1; - break; - - case OIND: - naddr(n->left, a); - if(a->type >= D_AX && a->type <= D_R15) - a->type += D_INDIR; - else - if(a->type == D_CONST) - a->type = D_NONE+D_INDIR; - else - if(a->type == D_ADDR) { - a->type = a->index; - a->index = D_NONE; - } else - goto bad; - break; - - case OINDEX: - a->type = idx.ptr; - if(n->left->op == OADDR || n->left->op == OCONST) - naddr(n->left, a); - if(a->type >= D_AX && a->type <= D_R15) - a->type += D_INDIR; - else - if(a->type == D_CONST) - a->type = D_NONE+D_INDIR; - else - if(a->type == D_ADDR) { - a->type = a->index; - a->index = D_NONE; - } else - goto bad; - a->index = idx.reg; - a->scale = n->scale; - a->offset += n->xoffset; - break; - - case OINDREG: - a->type = n->reg+D_INDIR; - a->sym = nil; - a->offset = n->xoffset; - break; - - case ONAME: - a->etype = n->etype; - a->type = D_STATIC; - a->sym = linksym(n->sym); - a->offset = n->xoffset; - if(n->class == CSTATIC) - break; - if(n->class == CEXTERN || n->class == CGLOBL) { - a->type = D_EXTERN; - break; - } - if(n->class == CAUTO) { - a->type = D_AUTO; - break; - } - if(n->class == CPARAM) { - a->type = D_PARAM; - break; - } - goto bad; - - case OCONST: - if(typefd[n->type->etype]) { - a->type = D_FCONST; - a->u.dval = n->fconst; - break; - } - a->sym = nil; - a->type = D_CONST; - if(typev[n->type->etype] || (n->type->etype == TIND && ewidth[TIND] == 8)) - a->offset = n->vconst; - else - a->offset = convvtox(n->vconst, typeu[n->type->etype]? TULONG: TLONG); - break; - - case OADDR: - naddr(n->left, a); - if(a->type >= D_INDIR) { - a->type -= D_INDIR; - break; - } - if(a->type == D_EXTERN || a->type == D_STATIC || - a->type == D_AUTO || a->type == D_PARAM) - if(a->index == D_NONE) { - a->index = a->type; - a->type = D_ADDR; - break; - } - goto bad; - - case OADD: - if(n->right->op == OCONST) { - v = n->right->vconst; - naddr(n->left, a); - } else - if(n->left->op == OCONST) { - v = n->left->vconst; - naddr(n->right, a); - } else - goto bad; - a->offset += v; - break; - - } -} - -void -gcmp(int op, Node *n, vlong val) -{ - Node *cn, nod; - - cn = nodgconst(val, n->type); - if(!immconst(cn)){ - regalloc(&nod, n, Z); - gmove(cn, &nod); - gopcode(op, n->type, n, &nod); - regfree(&nod); - }else - gopcode(op, n->type, n, cn); -} - -#define CASE(a,b) ((a<<8)|(b<<0)) - -void -gmove(Node *f, Node *t) -{ - int ft, tt, t64, a; - Node nod, nod1, nod2, nod3; - Prog *p1, *p2; - - ft = f->type->etype; - tt = t->type->etype; - if(ewidth[TIND] == 4) { - if(ft == TIND) - ft = TUINT; - if(tt == TIND) - tt = TUINT; - } - t64 = tt == TVLONG || tt == TUVLONG || tt == TIND; - if(debug['M']) - print("gop: %O %O[%s],%O[%s]\n", OAS, - f->op, tnames[ft], t->op, tnames[tt]); - if(typefd[ft] && f->op == OCONST) { - /* TO DO: pick up special constants, possibly preloaded */ - if(f->fconst == 0.0){ - regalloc(&nod, t, t); - gins(AXORPD, &nod, &nod); - gmove(&nod, t); - regfree(&nod); - return; - } - } -/* - * load - */ - if(ft == TVLONG || ft == TUVLONG) - if(f->op == OCONST) - if(f->vconst > 0x7fffffffLL || f->vconst < -0x7fffffffLL) - if(t->op != OREGISTER) { - regalloc(&nod, f, Z); - gmove(f, &nod); - gmove(&nod, t); - regfree(&nod); - return; - } - - if(f->op == ONAME || f->op == OINDREG || - f->op == OIND || f->op == OINDEX) - switch(ft) { - case TCHAR: - a = AMOVBLSX; - if(t64) - a = AMOVBQSX; - goto ld; - case TUCHAR: - a = AMOVBLZX; - if(t64) - a = AMOVBQZX; - goto ld; - case TSHORT: - a = AMOVWLSX; - if(t64) - a = AMOVWQSX; - goto ld; - case TUSHORT: - a = AMOVWLZX; - if(t64) - a = AMOVWQZX; - goto ld; - case TINT: - case TLONG: - if(typefd[tt]) { - regalloc(&nod, t, t); - if(tt == TDOUBLE) - a = ACVTSL2SD; - else - a = ACVTSL2SS; - gins(a, f, &nod); - gmove(&nod, t); - regfree(&nod); - return; - } - a = AMOVL; - if(t64) - a = AMOVLQSX; - goto ld; - case TUINT: - case TULONG: - a = AMOVL; - if(t64) - a = AMOVLQZX; /* could probably use plain MOVL */ - goto ld; - case TVLONG: - if(typefd[tt]) { - regalloc(&nod, t, t); - if(tt == TDOUBLE) - a = ACVTSQ2SD; - else - a = ACVTSQ2SS; - gins(a, f, &nod); - gmove(&nod, t); - regfree(&nod); - return; - } - case TUVLONG: - a = AMOVQ; - goto ld; - case TIND: - a = AMOVQ; - if(ewidth[TIND] == 4) - a = AMOVL; - - ld: - regalloc(&nod, f, t); - nod.type = t64? types[TVLONG]: types[TINT]; - gins(a, f, &nod); - gmove(&nod, t); - regfree(&nod); - return; - - case TFLOAT: - a = AMOVSS; - goto fld; - case TDOUBLE: - a = AMOVSD; - fld: - regalloc(&nod, f, t); - if(tt != TDOUBLE && tt != TFLOAT){ /* TO DO: why is this here */ - prtree(f, "odd tree"); - nod.type = t64? types[TVLONG]: types[TINT]; - } - gins(a, f, &nod); - gmove(&nod, t); - regfree(&nod); - return; - } - -/* - * store - */ - if(t->op == ONAME || t->op == OINDREG || - t->op == OIND || t->op == OINDEX) - switch(tt) { - case TCHAR: - case TUCHAR: - a = AMOVB; goto st; - case TSHORT: - case TUSHORT: - a = AMOVW; goto st; - case TINT: - case TUINT: - case TLONG: - case TULONG: - a = AMOVL; goto st; - case TVLONG: - case TUVLONG: - case TIND: - a = AMOVQ; goto st; - - st: - if(f->op == OCONST) { - gins(a, f, t); - return; - } - fst: - regalloc(&nod, t, f); - gmove(f, &nod); - gins(a, &nod, t); - regfree(&nod); - return; - - case TFLOAT: - a = AMOVSS; - goto fst; - case TDOUBLE: - a = AMOVSD; - goto fst; - } - -/* - * convert - */ - switch(CASE(ft,tt)) { - default: -/* - * integer to integer - ******** - a = AGOK; break; - - case CASE( TCHAR, TCHAR): - case CASE( TUCHAR, TCHAR): - case CASE( TSHORT, TCHAR): - case CASE( TUSHORT,TCHAR): - case CASE( TINT, TCHAR): - case CASE( TUINT, TCHAR): - case CASE( TLONG, TCHAR): - case CASE( TULONG, TCHAR): - - case CASE( TCHAR, TUCHAR): - case CASE( TUCHAR, TUCHAR): - case CASE( TSHORT, TUCHAR): - case CASE( TUSHORT,TUCHAR): - case CASE( TINT, TUCHAR): - case CASE( TUINT, TUCHAR): - case CASE( TLONG, TUCHAR): - case CASE( TULONG, TUCHAR): - - case CASE( TSHORT, TSHORT): - case CASE( TUSHORT,TSHORT): - case CASE( TINT, TSHORT): - case CASE( TUINT, TSHORT): - case CASE( TLONG, TSHORT): - case CASE( TULONG, TSHORT): - - case CASE( TSHORT, TUSHORT): - case CASE( TUSHORT,TUSHORT): - case CASE( TINT, TUSHORT): - case CASE( TUINT, TUSHORT): - case CASE( TLONG, TUSHORT): - case CASE( TULONG, TUSHORT): - - case CASE( TINT, TINT): - case CASE( TUINT, TINT): - case CASE( TLONG, TINT): - case CASE( TULONG, TINT): - - case CASE( TINT, TUINT): - case CASE( TUINT, TUINT): - case CASE( TLONG, TUINT): - case CASE( TULONG, TUINT): - *****/ - a = AMOVL; - break; - - case CASE( TINT, TIND): - case CASE( TINT, TVLONG): - case CASE( TINT, TUVLONG): - case CASE( TLONG, TIND): - case CASE( TLONG, TVLONG): - case CASE( TLONG, TUVLONG): - a = AMOVLQSX; - if(f->op == OCONST) { - f->vconst &= (uvlong)0xffffffffU; - if(f->vconst & 0x80000000) - f->vconst |= (vlong)0xffffffff << 32; - a = AMOVQ; - } - break; - - case CASE( TUINT, TIND): - case CASE( TUINT, TVLONG): - case CASE( TUINT, TUVLONG): - case CASE( TULONG, TVLONG): - case CASE( TULONG, TUVLONG): - case CASE( TULONG, TIND): - a = AMOVLQZX; - if(f->op == OCONST) { - f->vconst &= (uvlong)0xffffffffU; - a = AMOVQ; - } - break; - - case CASE( TIND, TCHAR): - case CASE( TIND, TUCHAR): - case CASE( TIND, TSHORT): - case CASE( TIND, TUSHORT): - case CASE( TIND, TINT): - case CASE( TIND, TUINT): - case CASE( TIND, TLONG): - case CASE( TIND, TULONG): - case CASE( TVLONG, TCHAR): - case CASE( TVLONG, TUCHAR): - case CASE( TVLONG, TSHORT): - case CASE( TVLONG, TUSHORT): - case CASE( TVLONG, TINT): - case CASE( TVLONG, TUINT): - case CASE( TVLONG, TLONG): - case CASE( TVLONG, TULONG): - case CASE( TUVLONG, TCHAR): - case CASE( TUVLONG, TUCHAR): - case CASE( TUVLONG, TSHORT): - case CASE( TUVLONG, TUSHORT): - case CASE( TUVLONG, TINT): - case CASE( TUVLONG, TUINT): - case CASE( TUVLONG, TLONG): - case CASE( TUVLONG, TULONG): - a = AMOVQL; - if(f->op == OCONST) { - f->vconst &= (int)0xffffffffU; - a = AMOVL; - } - break; - - case CASE( TIND, TIND): - case CASE( TIND, TVLONG): - case CASE( TIND, TUVLONG): - case CASE( TVLONG, TIND): - case CASE( TVLONG, TVLONG): - case CASE( TVLONG, TUVLONG): - case CASE( TUVLONG, TIND): - case CASE( TUVLONG, TVLONG): - case CASE( TUVLONG, TUVLONG): - a = AMOVQ; - break; - - case CASE( TSHORT, TINT): - case CASE( TSHORT, TUINT): - case CASE( TSHORT, TLONG): - case CASE( TSHORT, TULONG): - a = AMOVWLSX; - if(f->op == OCONST) { - f->vconst &= 0xffff; - if(f->vconst & 0x8000) - f->vconst |= 0xffff0000; - a = AMOVL; - } - break; - - case CASE( TSHORT, TVLONG): - case CASE( TSHORT, TUVLONG): - case CASE( TSHORT, TIND): - a = AMOVWQSX; - if(f->op == OCONST) { - f->vconst &= 0xffff; - if(f->vconst & 0x8000){ - f->vconst |= 0xffff0000; - f->vconst |= (vlong)~0 << 32; - } - a = AMOVL; - } - break; - - case CASE( TUSHORT,TINT): - case CASE( TUSHORT,TUINT): - case CASE( TUSHORT,TLONG): - case CASE( TUSHORT,TULONG): - a = AMOVWLZX; - if(f->op == OCONST) { - f->vconst &= 0xffff; - a = AMOVL; - } - break; - - case CASE( TUSHORT,TVLONG): - case CASE( TUSHORT,TUVLONG): - case CASE( TUSHORT,TIND): - a = AMOVWQZX; - if(f->op == OCONST) { - f->vconst &= 0xffff; - a = AMOVL; /* MOVL also zero-extends to 64 bits */ - } - break; - - case CASE( TCHAR, TSHORT): - case CASE( TCHAR, TUSHORT): - case CASE( TCHAR, TINT): - case CASE( TCHAR, TUINT): - case CASE( TCHAR, TLONG): - case CASE( TCHAR, TULONG): - a = AMOVBLSX; - if(f->op == OCONST) { - f->vconst &= 0xff; - if(f->vconst & 0x80) - f->vconst |= 0xffffff00; - a = AMOVL; - } - break; - - case CASE( TCHAR, TVLONG): - case CASE( TCHAR, TUVLONG): - case CASE( TCHAR, TIND): - a = AMOVBQSX; - if(f->op == OCONST) { - f->vconst &= 0xff; - if(f->vconst & 0x80){ - f->vconst |= 0xffffff00; - f->vconst |= (vlong)~0 << 32; - } - a = AMOVQ; - } - break; - - case CASE( TUCHAR, TSHORT): - case CASE( TUCHAR, TUSHORT): - case CASE( TUCHAR, TINT): - case CASE( TUCHAR, TUINT): - case CASE( TUCHAR, TLONG): - case CASE( TUCHAR, TULONG): - a = AMOVBLZX; - if(f->op == OCONST) { - f->vconst &= 0xff; - a = AMOVL; - } - break; - - case CASE( TUCHAR, TVLONG): - case CASE( TUCHAR, TUVLONG): - case CASE( TUCHAR, TIND): - a = AMOVBQZX; - if(f->op == OCONST) { - f->vconst &= 0xff; - a = AMOVL; /* zero-extends to 64-bits */ - } - break; - -/* - * float to fix - */ - case CASE( TFLOAT, TCHAR): - case CASE( TFLOAT, TUCHAR): - case CASE( TFLOAT, TSHORT): - case CASE( TFLOAT, TUSHORT): - case CASE( TFLOAT, TINT): - case CASE( TFLOAT, TUINT): - case CASE( TFLOAT, TLONG): - case CASE( TFLOAT, TULONG): - case CASE( TFLOAT, TVLONG): - case CASE( TFLOAT, TUVLONG): - case CASE( TFLOAT, TIND): - - case CASE( TDOUBLE,TCHAR): - case CASE( TDOUBLE,TUCHAR): - case CASE( TDOUBLE,TSHORT): - case CASE( TDOUBLE,TUSHORT): - case CASE( TDOUBLE,TINT): - case CASE( TDOUBLE,TUINT): - case CASE( TDOUBLE,TLONG): - case CASE( TDOUBLE,TULONG): - case CASE( TDOUBLE,TVLONG): - case CASE( TDOUBLE,TUVLONG): - case CASE( TDOUBLE,TIND): - regalloc(&nod, t, Z); - if(ewidth[tt] == SZ_VLONG || typeu[tt] && ewidth[tt] == SZ_INT){ - if(ft == TFLOAT) - a = ACVTTSS2SQ; - else - a = ACVTTSD2SQ; - }else{ - if(ft == TFLOAT) - a = ACVTTSS2SL; - else - a = ACVTTSD2SL; - } - gins(a, f, &nod); - gmove(&nod, t); - regfree(&nod); - return; - -/* - * uvlong to float - */ - case CASE( TUVLONG, TDOUBLE): - case CASE( TUVLONG, TFLOAT): - a = ACVTSQ2SS; - if(tt == TDOUBLE) - a = ACVTSQ2SD; - regalloc(&nod, f, f); - gmove(f, &nod); - regalloc(&nod1, t, t); - gins(ACMPQ, &nod, nodconst(0)); - gins(AJLT, Z, Z); - p1 = p; - gins(a, &nod, &nod1); - gins(AJMP, Z, Z); - p2 = p; - patch(p1, pc); - regalloc(&nod2, f, Z); - regalloc(&nod3, f, Z); - gmove(&nod, &nod2); - gins(ASHRQ, nodconst(1), &nod2); - gmove(&nod, &nod3); - gins(AANDL, nodconst(1), &nod3); - gins(AORQ, &nod3, &nod2); - gins(a, &nod2, &nod1); - gins(tt == TDOUBLE? AADDSD: AADDSS, &nod1, &nod1); - regfree(&nod2); - regfree(&nod3); - patch(p2, pc); - regfree(&nod); - regfree(&nod1); - return; - - case CASE( TULONG, TDOUBLE): - case CASE( TUINT, TDOUBLE): - case CASE( TULONG, TFLOAT): - case CASE( TUINT, TFLOAT): - a = ACVTSQ2SS; - if(tt == TDOUBLE) - a = ACVTSQ2SD; - regalloc(&nod, f, f); - gins(AMOVLQZX, f, &nod); - regalloc(&nod1, t, t); - gins(a, &nod, &nod1); - gmove(&nod1, t); - regfree(&nod); - regfree(&nod1); - return; - -/* - * fix to float - */ - case CASE( TCHAR, TFLOAT): - case CASE( TUCHAR, TFLOAT): - case CASE( TSHORT, TFLOAT): - case CASE( TUSHORT,TFLOAT): - case CASE( TINT, TFLOAT): - case CASE( TLONG, TFLOAT): - case CASE( TVLONG, TFLOAT): - case CASE( TIND, TFLOAT): - - case CASE( TCHAR, TDOUBLE): - case CASE( TUCHAR, TDOUBLE): - case CASE( TSHORT, TDOUBLE): - case CASE( TUSHORT,TDOUBLE): - case CASE( TINT, TDOUBLE): - case CASE( TLONG, TDOUBLE): - case CASE( TVLONG, TDOUBLE): - case CASE( TIND, TDOUBLE): - regalloc(&nod, t, t); - if(ewidth[ft] == SZ_VLONG){ - if(tt == TFLOAT) - a = ACVTSQ2SS; - else - a = ACVTSQ2SD; - }else{ - if(tt == TFLOAT) - a = ACVTSL2SS; - else - a = ACVTSL2SD; - } - gins(a, f, &nod); - gmove(&nod, t); - regfree(&nod); - return; - -/* - * float to float - */ - case CASE( TFLOAT, TFLOAT): - a = AMOVSS; - break; - case CASE( TDOUBLE,TFLOAT): - a = ACVTSD2SS; - break; - case CASE( TFLOAT, TDOUBLE): - a = ACVTSS2SD; - break; - case CASE( TDOUBLE,TDOUBLE): - a = AMOVSD; - break; - } - if(a == AMOVQ || a == AMOVSD || a == AMOVSS || a == AMOVL && ewidth[ft] == ewidth[tt]) /* TO DO: check AMOVL */ - if(samaddr(f, t)) - return; - gins(a, f, t); -} - -void -doindex(Node *n) -{ - Node nod, nod1; - int32 v; - -if(debug['Y']) -prtree(n, "index"); - -if(n->left->complex >= FNX) -print("botch in doindex\n"); - - regalloc(&nod, &qregnode, Z); - v = constnode.vconst; - cgen(n->right, &nod); - idx.ptr = D_NONE; - if(n->left->op == OCONST) - idx.ptr = D_CONST; - else if(n->left->op == OREGISTER) - idx.ptr = n->left->reg; - else if(n->left->op != OADDR) { - reg[D_BP]++; // can't be used as a base - regalloc(&nod1, &qregnode, Z); - cgen(n->left, &nod1); - idx.ptr = nod1.reg; - regfree(&nod1); - reg[D_BP]--; - } - idx.reg = nod.reg; - regfree(&nod); - constnode.vconst = v; -} - -void -gins(int a, Node *f, Node *t) -{ - - if(f != Z && f->op == OINDEX) - doindex(f); - if(t != Z && t->op == OINDEX) - doindex(t); - nextpc(); - p->as = a; - if(f != Z) - naddr(f, &p->from); - if(t != Z) - naddr(t, &p->to); - if(debug['g']) - print("%P\n", p); -} - -void -gopcode(int o, Type *ty, Node *f, Node *t) -{ - int a, et; - - et = TLONG; - if(ty != T) - et = ty->etype; - if(et == TIND && ewidth[TIND] == 4) - et = TUINT; - if(debug['M']) { - if(f != Z && f->type != T) - print("gop: %O %O[%s],", o, f->op, tnames[et]); - else - print("gop: %O Z,", o); - if(t != Z && t->type != T) - print("%O[%s]\n", t->op, tnames[t->type->etype]); - else - print("Z\n"); - } - a = AGOK; - switch(o) { - case OCOM: - a = ANOTL; - if(et == TCHAR || et == TUCHAR) - a = ANOTB; - if(et == TSHORT || et == TUSHORT) - a = ANOTW; - if(et == TVLONG || et == TUVLONG || et == TIND) - a = ANOTQ; - break; - - case ONEG: - a = ANEGL; - if(et == TCHAR || et == TUCHAR) - a = ANEGB; - if(et == TSHORT || et == TUSHORT) - a = ANEGW; - if(et == TVLONG || et == TUVLONG || et == TIND) - a = ANEGQ; - break; - - case OADDR: - a = ALEAQ; - break; - - case OASADD: - case OADD: - a = AADDL; - if(et == TCHAR || et == TUCHAR) - a = AADDB; - if(et == TSHORT || et == TUSHORT) - a = AADDW; - if(et == TVLONG || et == TUVLONG || et == TIND) - a = AADDQ; - if(et == TFLOAT) - a = AADDSS; - if(et == TDOUBLE) - a = AADDSD; - break; - - case OASSUB: - case OSUB: - a = ASUBL; - if(et == TCHAR || et == TUCHAR) - a = ASUBB; - if(et == TSHORT || et == TUSHORT) - a = ASUBW; - if(et == TVLONG || et == TUVLONG || et == TIND) - a = ASUBQ; - if(et == TFLOAT) - a = ASUBSS; - if(et == TDOUBLE) - a = ASUBSD; - break; - - case OASOR: - case OOR: - a = AORL; - if(et == TCHAR || et == TUCHAR) - a = AORB; - if(et == TSHORT || et == TUSHORT) - a = AORW; - if(et == TVLONG || et == TUVLONG || et == TIND) - a = AORQ; - break; - - case OASAND: - case OAND: - a = AANDL; - if(et == TCHAR || et == TUCHAR) - a = AANDB; - if(et == TSHORT || et == TUSHORT) - a = AANDW; - if(et == TVLONG || et == TUVLONG || et == TIND) - a = AANDQ; - break; - - case OASXOR: - case OXOR: - a = AXORL; - if(et == TCHAR || et == TUCHAR) - a = AXORB; - if(et == TSHORT || et == TUSHORT) - a = AXORW; - if(et == TVLONG || et == TUVLONG || et == TIND) - a = AXORQ; - break; - - case OASLSHR: - case OLSHR: - a = ASHRL; - if(et == TCHAR || et == TUCHAR) - a = ASHRB; - if(et == TSHORT || et == TUSHORT) - a = ASHRW; - if(et == TVLONG || et == TUVLONG || et == TIND) - a = ASHRQ; - break; - - case OASASHR: - case OASHR: - a = ASARL; - if(et == TCHAR || et == TUCHAR) - a = ASARB; - if(et == TSHORT || et == TUSHORT) - a = ASARW; - if(et == TVLONG || et == TUVLONG || et == TIND) - a = ASARQ; - break; - - case OASASHL: - case OASHL: - a = ASALL; - if(et == TCHAR || et == TUCHAR) - a = ASALB; - if(et == TSHORT || et == TUSHORT) - a = ASALW; - if(et == TVLONG || et == TUVLONG || et == TIND) - a = ASALQ; - break; - - case OROTL: - a = AROLL; - if(et == TCHAR || et == TUCHAR) - a = AROLB; - if(et == TSHORT || et == TUSHORT) - a = AROLW; - if(et == TVLONG || et == TUVLONG || et == TIND) - a = AROLQ; - break; - - case OFUNC: - a = ACALL; - break; - - case OASMUL: - case OMUL: - if(f->op == OREGISTER && t != Z && isreg(t, D_AX) && reg[D_DX] == 0) - t = Z; - a = AIMULL; - if(et == TVLONG || et == TUVLONG || et == TIND) - a = AIMULQ; - if(et == TFLOAT) - a = AMULSS; - if(et == TDOUBLE) - a = AMULSD; - break; - - case OASMOD: - case OMOD: - case OASDIV: - case ODIV: - a = AIDIVL; - if(et == TVLONG || et == TUVLONG || et == TIND) - a = AIDIVQ; - if(et == TFLOAT) - a = ADIVSS; - if(et == TDOUBLE) - a = ADIVSD; - break; - - case OASLMUL: - case OLMUL: - a = AMULL; - if(et == TVLONG || et == TUVLONG || et == TIND) - a = AMULQ; - break; - - case OASLMOD: - case OLMOD: - case OASLDIV: - case OLDIV: - a = ADIVL; - if(et == TVLONG || et == TUVLONG || et == TIND) - a = ADIVQ; - break; - - case OEQ: - case ONE: - case OLT: - case OLE: - case OGE: - case OGT: - case OLO: - case OLS: - case OHS: - case OHI: - a = ACMPL; - if(et == TCHAR || et == TUCHAR) - a = ACMPB; - if(et == TSHORT || et == TUSHORT) - a = ACMPW; - if(et == TVLONG || et == TUVLONG || et == TIND) - a = ACMPQ; - if(et == TFLOAT) - a = AUCOMISS; - if(et == TDOUBLE) - a = AUCOMISD; - gins(a, f, t); - switch(o) { - case OEQ: a = AJEQ; break; - case ONE: a = AJNE; break; - case OLT: a = AJLT; break; - case OLE: a = AJLE; break; - case OGE: a = AJGE; break; - case OGT: a = AJGT; break; - case OLO: a = AJCS; break; - case OLS: a = AJLS; break; - case OHS: a = AJCC; break; - case OHI: a = AJHI; break; - } - gins(a, Z, Z); - return; - } - if(a == AGOK) - diag(Z, "bad in gopcode %O", o); - gins(a, f, t); -} - -int -samaddr(Node *f, Node *t) -{ - return f->op == OREGISTER && t->op == OREGISTER && f->reg == t->reg; -} - -void -gbranch(int o) -{ - int a; - - a = AGOK; - switch(o) { - case ORETURN: - a = ARET; - break; - case OGOTO: - a = AJMP; - break; - } - nextpc(); - if(a == AGOK) { - diag(Z, "bad in gbranch %O", o); - nextpc(); - } - p->as = a; -} - -void -patch(Prog *op, int32 pc) -{ - op->to.offset = pc; - op->to.type = D_BRANCH; - op->to.u.branch = nil; - op->pcond = nil; -} - -void -gpseudo(int a, Sym *s, Node *n) -{ - - nextpc(); - p->as = a; - p->from.type = D_EXTERN; - p->from.sym = linksym(s); - - switch(a) { - case ATEXT: - p->from.scale = textflag; - textflag = 0; - break; - case AGLOBL: - p->from.scale = s->dataflag; - break; - } - - if(s->class == CSTATIC) - p->from.type = D_STATIC; - naddr(n, &p->to); - if(a == ADATA || a == AGLOBL) - pc--; -} - -void -gpcdata(int index, int value) -{ - Node n1; - - n1 = *nodconst(index); - gins(APCDATA, &n1, nodconst(value)); -} - -void -gprefetch(Node *n) -{ - Node n1; - - regalloc(&n1, n, Z); - gmove(n, &n1); - n1.op = OINDREG; - gins(APREFETCHNTA, &n1, Z); - regfree(&n1); -} - -int -sconst(Node *n) -{ - int32 v; - - if(n->op == OCONST && !typefd[n->type->etype]) { - v = n->vconst; - if(v >= -32766L && v < 32766L) - return 1; - } - return 0; -} - -int32 -exreg(Type *t) -{ - int32 o; - - if(typechlpv[t->etype]) { - if(exregoffset >= 64) - return 0; - o = exregoffset; - exregoffset += ewidth[TIND]; - return o+1; // +1 to avoid 0 == failure; naddr's case OEXREG will subtract 1. - } - return 0; -} - -schar ewidth[NTYPE] = -{ - -1, /*[TXXX]*/ - SZ_CHAR, /*[TCHAR]*/ - SZ_CHAR, /*[TUCHAR]*/ - SZ_SHORT, /*[TSHORT]*/ - SZ_SHORT, /*[TUSHORT]*/ - SZ_INT, /*[TINT]*/ - SZ_INT, /*[TUINT]*/ - SZ_LONG, /*[TLONG]*/ - SZ_LONG, /*[TULONG]*/ - SZ_VLONG, /*[TVLONG]*/ - SZ_VLONG, /*[TUVLONG]*/ - SZ_FLOAT, /*[TFLOAT]*/ - SZ_DOUBLE, /*[TDOUBLE]*/ - SZ_IND, /*[TIND]*/ - 0, /*[TFUNC]*/ - -1, /*[TARRAY]*/ - 0, /*[TVOID]*/ - -1, /*[TSTRUCT]*/ - -1, /*[TUNION]*/ - SZ_INT, /*[TENUM]*/ -}; -int32 ncast[NTYPE] = -{ - 0, /*[TXXX]*/ - BCHAR|BUCHAR, /*[TCHAR]*/ - BCHAR|BUCHAR, /*[TUCHAR]*/ - BSHORT|BUSHORT, /*[TSHORT]*/ - BSHORT|BUSHORT, /*[TUSHORT]*/ - BINT|BUINT|BLONG|BULONG, /*[TINT]*/ - BINT|BUINT|BLONG|BULONG, /*[TUINT]*/ - BINT|BUINT|BLONG|BULONG, /*[TLONG]*/ - BINT|BUINT|BLONG|BULONG, /*[TULONG]*/ - BVLONG|BUVLONG|BIND, /*[TVLONG]*/ - BVLONG|BUVLONG|BIND, /*[TUVLONG]*/ - BFLOAT, /*[TFLOAT]*/ - BDOUBLE, /*[TDOUBLE]*/ - BVLONG|BUVLONG|BIND, /*[TIND]*/ - 0, /*[TFUNC]*/ - 0, /*[TARRAY]*/ - 0, /*[TVOID]*/ - BSTRUCT, /*[TSTRUCT]*/ - BUNION, /*[TUNION]*/ - 0, /*[TENUM]*/ -}; diff --git a/src/cmd/8c/Makefile b/src/cmd/8c/Makefile deleted file mode 100644 index 3f528d751..000000000 --- a/src/cmd/8c/Makefile +++ /dev/null @@ -1,5 +0,0 @@ -# Copyright 2012 The Go Authors. All rights reserved. -# Use of this source code is governed by a BSD-style -# license that can be found in the LICENSE file. - -include ../../Make.dist diff --git a/src/cmd/8c/cgen.c b/src/cmd/8c/cgen.c deleted file mode 100644 index 87e8fdad8..000000000 --- a/src/cmd/8c/cgen.c +++ /dev/null @@ -1,1939 +0,0 @@ -// Inferno utils/8c/cgen.c -// http://code.google.com/p/inferno-os/source/browse/utils/8c/cgen.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" -#include "../../runtime/funcdata.h" - -/* ,x/^(print|prtree)\(/i/\/\/ */ - -void -cgen(Node *n, Node *nn) -{ - Node *l, *r, *t; - Prog *p1; - Node nod, nod1, nod2, nod3, nod4; - int o, hardleft; - int32 v, curs; - vlong c; - - if(debug['g']) { - prtree(nn, "cgen lhs"); - prtree(n, "cgen"); - } - if(n == Z || n->type == T) - return; - if(typesuv[n->type->etype] && (n->op != OFUNC || nn != Z)) { - sugen(n, nn, n->type->width); - return; - } - l = n->left; - r = n->right; - o = n->op; - - if(n->op == OEXREG || (nn != Z && nn->op == OEXREG)) { - gmove(n, nn); - return; - } - - if(n->addable >= INDEXED) { - if(nn == Z) { - switch(o) { - default: - nullwarn(Z, Z); - break; - case OINDEX: - nullwarn(l, r); - break; - } - return; - } - gmove(n, nn); - return; - } - curs = cursafe; - - if(l->complex >= FNX) - if(r != Z && r->complex >= FNX) - switch(o) { - default: - if(cond(o) && typesuv[l->type->etype]) - break; - - regret(&nod, r, 0, 0); - cgen(r, &nod); - - regsalloc(&nod1, r); - gmove(&nod, &nod1); - - regfree(&nod); - nod = *n; - nod.right = &nod1; - - cgen(&nod, nn); - return; - - case OFUNC: - case OCOMMA: - case OANDAND: - case OOROR: - case OCOND: - case ODOT: - break; - } - - hardleft = l->addable < INDEXED || l->complex >= FNX; - switch(o) { - default: - diag(n, "unknown op in cgen: %O", o); - break; - - case ONEG: - case OCOM: - if(nn == Z) { - nullwarn(l, Z); - break; - } - regalloc(&nod, l, nn); - cgen(l, &nod); - gopcode(o, n->type, Z, &nod); - gmove(&nod, nn); - regfree(&nod); - break; - - case OAS: - if(typefd[n->type->etype]) { - cgen(r, &fregnode0); - if(nn != Z) - gins(AFMOVD, &fregnode0, &fregnode0); - if(l->addable < INDEXED) { - reglcgen(&nod, l, Z); - gmove(&fregnode0, &nod); - regfree(&nod); - } else - gmove(&fregnode0, l); - if(nn != Z) - gmove(&fregnode0, nn); - return; - } - if(l->op == OBIT) - goto bitas; - if(!hardleft) { - if(nn != Z || r->addable < INDEXED) { - if(r->complex >= FNX && nn == Z) - regret(&nod, r, 0, 0); - else - regalloc(&nod, r, nn); - cgen(r, &nod); - gmove(&nod, l); - if(nn != Z) - gmove(&nod, nn); - regfree(&nod); - } else - gmove(r, l); - break; - } - if(l->complex >= r->complex) { - if(l->op == OINDEX && r->op == OCONST) { - gmove(r, l); - break; - } - reglcgen(&nod1, l, Z); - if(r->addable >= INDEXED) { - gmove(r, &nod1); - if(nn != Z) - gmove(r, nn); - regfree(&nod1); - break; - } - regalloc(&nod, r, nn); - cgen(r, &nod); - } else { - regalloc(&nod, r, nn); - cgen(r, &nod); - reglcgen(&nod1, l, Z); - } - gmove(&nod, &nod1); - regfree(&nod); - regfree(&nod1); - break; - - bitas: - n = l->left; - regalloc(&nod, r, nn); - if(l->complex >= r->complex) { - reglcgen(&nod1, n, Z); - cgen(r, &nod); - } else { - cgen(r, &nod); - reglcgen(&nod1, n, Z); - } - regalloc(&nod2, n, Z); - gmove(&nod1, &nod2); - bitstore(l, &nod, &nod1, &nod2, nn); - break; - - case OBIT: - if(nn == Z) { - nullwarn(l, Z); - break; - } - bitload(n, &nod, Z, Z, nn); - gmove(&nod, nn); - regfree(&nod); - break; - - case OLSHR: - case OASHL: - case OASHR: - if(nn == Z) { - nullwarn(l, r); - break; - } - if(r->op == OCONST) { - if(r->vconst == 0) { - cgen(l, nn); - break; - } - regalloc(&nod, l, nn); - cgen(l, &nod); - if(o == OASHL && r->vconst == 1) - gopcode(OADD, n->type, &nod, &nod); - else - gopcode(o, n->type, r, &nod); - gmove(&nod, nn); - regfree(&nod); - break; - } - - /* - * get nod to be D_CX - */ - if(nodreg(&nod, nn, D_CX)) { - regsalloc(&nod1, n); - gmove(&nod, &nod1); - cgen(n, &nod); /* probably a bug */ - gmove(&nod, nn); - gmove(&nod1, &nod); - break; - } - reg[D_CX]++; - if(nn->op == OREGISTER && nn->reg == D_CX) - regalloc(&nod1, l, Z); - else - regalloc(&nod1, l, nn); - if(r->complex >= l->complex) { - cgen(r, &nod); - cgen(l, &nod1); - } else { - cgen(l, &nod1); - cgen(r, &nod); - } - gopcode(o, n->type, &nod, &nod1); - gmove(&nod1, nn); - regfree(&nod); - regfree(&nod1); - break; - - case OADD: - case OSUB: - case OOR: - case OXOR: - case OAND: - if(nn == Z) { - nullwarn(l, r); - break; - } - if(typefd[n->type->etype]) - goto fop; - if(r->op == OCONST) { - if(r->vconst == 0 && o != OAND) { - cgen(l, nn); - break; - } - } - if(n->op == OOR && l->op == OASHL && r->op == OLSHR - && l->right->op == OCONST && r->right->op == OCONST - && l->left->op == ONAME && r->left->op == ONAME - && l->left->sym == r->left->sym - && l->right->vconst + r->right->vconst == 8 * l->left->type->width) { - regalloc(&nod, l->left, nn); - cgen(l->left, &nod); - gopcode(OROTL, n->type, l->right, &nod); - gmove(&nod, nn); - regfree(&nod); - break; - } - if(n->op == OADD && l->op == OASHL && l->right->op == OCONST - && (r->op != OCONST || r->vconst < -128 || r->vconst > 127)) { - c = l->right->vconst; - if(c > 0 && c <= 3) { - if(l->left->complex >= r->complex) { - regalloc(&nod, l->left, nn); - cgen(l->left, &nod); - if(r->addable < INDEXED) { - regalloc(&nod1, r, Z); - cgen(r, &nod1); - genmuladd(&nod, &nod, 1 << c, &nod1); - regfree(&nod1); - } - else - genmuladd(&nod, &nod, 1 << c, r); - } - else { - regalloc(&nod, r, nn); - cgen(r, &nod); - regalloc(&nod1, l->left, Z); - cgen(l->left, &nod1); - genmuladd(&nod, &nod1, 1 << c, &nod); - regfree(&nod1); - } - gmove(&nod, nn); - regfree(&nod); - break; - } - } - if(r->addable >= INDEXED) { - regalloc(&nod, l, nn); - cgen(l, &nod); - gopcode(o, n->type, r, &nod); - gmove(&nod, nn); - regfree(&nod); - break; - } - if(l->complex >= r->complex) { - regalloc(&nod, l, nn); - cgen(l, &nod); - regalloc(&nod1, r, Z); - cgen(r, &nod1); - gopcode(o, n->type, &nod1, &nod); - } else { - regalloc(&nod1, r, nn); - cgen(r, &nod1); - regalloc(&nod, l, Z); - cgen(l, &nod); - gopcode(o, n->type, &nod1, &nod); - } - gmove(&nod, nn); - regfree(&nod); - regfree(&nod1); - break; - - case OLMOD: - case OMOD: - case OLMUL: - case OLDIV: - case OMUL: - case ODIV: - if(nn == Z) { - nullwarn(l, r); - break; - } - if(typefd[n->type->etype]) - goto fop; - if(r->op == OCONST) { - SET(v); - switch(o) { - case ODIV: - case OMOD: - c = r->vconst; - if(c < 0) - c = -c; - v = xlog2(c); - if(v < 0) - break; - /* fall thru */ - case OMUL: - case OLMUL: - regalloc(&nod, l, nn); - cgen(l, &nod); - switch(o) { - case OMUL: - case OLMUL: - mulgen(n->type, r, &nod); - break; - case ODIV: - sdiv2(r->vconst, v, l, &nod); - break; - case OMOD: - smod2(r->vconst, v, l, &nod); - break; - } - gmove(&nod, nn); - regfree(&nod); - goto done; - case OLDIV: - c = r->vconst; - if((c & 0x80000000) == 0) - break; - regalloc(&nod1, l, Z); - cgen(l, &nod1); - regalloc(&nod, l, nn); - zeroregm(&nod); - gins(ACMPL, &nod1, nodconst(c)); - gins(ASBBL, nodconst(-1), &nod); - regfree(&nod1); - gmove(&nod, nn); - regfree(&nod); - goto done; - } - } - - if(o == OMUL || o == OLMUL) { - if(l->addable >= INDEXED) { - t = l; - l = r; - r = t; - } - reg[D_DX]++; // for gopcode case OMUL - regalloc(&nod, l, nn); - cgen(l, &nod); - if(r->addable < INDEXED) { - regalloc(&nod1, r, Z); - cgen(r, &nod1); - gopcode(OMUL, n->type, &nod1, &nod); - regfree(&nod1); - }else - gopcode(OMUL, n->type, r, &nod); /* addressible */ - gmove(&nod, nn); - regfree(&nod); - reg[D_DX]--; - break; - } - - /* - * get nod to be D_AX - * get nod1 to be D_DX - */ - if(nodreg(&nod, nn, D_AX)) { - regsalloc(&nod2, n); - gmove(&nod, &nod2); - v = reg[D_AX]; - reg[D_AX] = 0; - - if(isreg(l, D_AX)) { - nod3 = *n; - nod3.left = &nod2; - cgen(&nod3, nn); - } else - if(isreg(r, D_AX)) { - nod3 = *n; - nod3.right = &nod2; - cgen(&nod3, nn); - } else - cgen(n, nn); - - gmove(&nod2, &nod); - reg[D_AX] = v; - break; - } - if(nodreg(&nod1, nn, D_DX)) { - regsalloc(&nod2, n); - gmove(&nod1, &nod2); - v = reg[D_DX]; - reg[D_DX] = 0; - - if(isreg(l, D_DX)) { - nod3 = *n; - nod3.left = &nod2; - cgen(&nod3, nn); - } else - if(isreg(r, D_DX)) { - nod3 = *n; - nod3.right = &nod2; - cgen(&nod3, nn); - } else - cgen(n, nn); - - gmove(&nod2, &nod1); - reg[D_DX] = v; - break; - } - reg[D_AX]++; - - if(r->op == OCONST && (o == ODIV || o == OLDIV)) { - reg[D_DX]++; - if(l->addable < INDEXED) { - regalloc(&nod2, l, Z); - cgen(l, &nod2); - l = &nod2; - } - if(o == ODIV) - sdivgen(l, r, &nod, &nod1); - else - udivgen(l, r, &nod, &nod1); - gmove(&nod1, nn); - if(l == &nod2) - regfree(l); - goto freeaxdx; - } - - if(l->complex >= r->complex) { - cgen(l, &nod); - reg[D_DX]++; - if(o == ODIV || o == OMOD) - gins(ACDQ, Z, Z); - if(o == OLDIV || o == OLMOD) - zeroregm(&nod1); - if(r->addable < INDEXED || r->op == OCONST) { - regsalloc(&nod3, r); - cgen(r, &nod3); - gopcode(o, n->type, &nod3, Z); - } else - gopcode(o, n->type, r, Z); - } else { - regsalloc(&nod3, r); - cgen(r, &nod3); - cgen(l, &nod); - reg[D_DX]++; - if(o == ODIV || o == OMOD) - gins(ACDQ, Z, Z); - if(o == OLDIV || o == OLMOD) - zeroregm(&nod1); - gopcode(o, n->type, &nod3, Z); - } - if(o == OMOD || o == OLMOD) - gmove(&nod1, nn); - else - gmove(&nod, nn); - freeaxdx: - regfree(&nod); - regfree(&nod1); - break; - - case OASLSHR: - case OASASHL: - case OASASHR: - if(r->op == OCONST) - goto asand; - if(l->op == OBIT) - goto asbitop; - if(typefd[n->type->etype]) - goto asfop; - - /* - * get nod to be D_CX - */ - if(nodreg(&nod, nn, D_CX)) { - regsalloc(&nod1, n); - gmove(&nod, &nod1); - cgen(n, &nod); - if(nn != Z) - gmove(&nod, nn); - gmove(&nod1, &nod); - break; - } - reg[D_CX]++; - - if(r->complex >= l->complex) { - cgen(r, &nod); - if(hardleft) - reglcgen(&nod1, l, Z); - else - nod1 = *l; - } else { - if(hardleft) - reglcgen(&nod1, l, Z); - else - nod1 = *l; - cgen(r, &nod); - } - - gopcode(o, l->type, &nod, &nod1); - regfree(&nod); - if(nn != Z) - gmove(&nod1, nn); - if(hardleft) - regfree(&nod1); - break; - - case OASAND: - case OASADD: - case OASSUB: - case OASXOR: - case OASOR: - asand: - if(l->op == OBIT) - goto asbitop; - if(typefd[n->type->etype]||typefd[r->type->etype]) - goto asfop; - if(l->complex >= r->complex) { - if(hardleft) - reglcgen(&nod, l, Z); - else - nod = *l; - if(r->op != OCONST) { - regalloc(&nod1, r, nn); - cgen(r, &nod1); - gopcode(o, l->type, &nod1, &nod); - regfree(&nod1); - } else - gopcode(o, l->type, r, &nod); - } else { - regalloc(&nod1, r, nn); - cgen(r, &nod1); - if(hardleft) - reglcgen(&nod, l, Z); - else - nod = *l; - gopcode(o, l->type, &nod1, &nod); - regfree(&nod1); - } - if(nn != Z) - gmove(&nod, nn); - if(hardleft) - regfree(&nod); - break; - - case OASLMUL: - case OASLDIV: - case OASLMOD: - case OASMUL: - case OASDIV: - case OASMOD: - if(l->op == OBIT) - goto asbitop; - if(typefd[n->type->etype]||typefd[r->type->etype]) - goto asfop; - if(r->op == OCONST) { - SET(v); - switch(o) { - case OASDIV: - case OASMOD: - c = r->vconst; - if(c < 0) - c = -c; - v = xlog2(c); - if(v < 0) - break; - /* fall thru */ - case OASMUL: - case OASLMUL: - if(hardleft) - reglcgen(&nod2, l, Z); - else - nod2 = *l; - regalloc(&nod, l, nn); - cgen(&nod2, &nod); - switch(o) { - case OASMUL: - case OASLMUL: - mulgen(n->type, r, &nod); - break; - case OASDIV: - sdiv2(r->vconst, v, l, &nod); - break; - case OASMOD: - smod2(r->vconst, v, l, &nod); - break; - } - havev: - gmove(&nod, &nod2); - if(nn != Z) - gmove(&nod, nn); - if(hardleft) - regfree(&nod2); - regfree(&nod); - goto done; - case OASLDIV: - c = r->vconst; - if((c & 0x80000000) == 0) - break; - if(hardleft) - reglcgen(&nod2, l, Z); - else - nod2 = *l; - regalloc(&nod1, l, nn); - cgen(&nod2, &nod1); - regalloc(&nod, l, nn); - zeroregm(&nod); - gins(ACMPL, &nod1, nodconst(c)); - gins(ASBBL, nodconst(-1), &nod); - regfree(&nod1); - goto havev; - } - } - - if(o == OASMUL) { - /* should favour AX */ - regalloc(&nod, l, nn); - if(r->complex >= FNX) { - regalloc(&nod1, r, Z); - cgen(r, &nod1); - r = &nod1; - } - if(hardleft) - reglcgen(&nod2, l, Z); - else - nod2 = *l; - cgen(&nod2, &nod); - if(r->addable < INDEXED) { - if(r->complex < FNX) { - regalloc(&nod1, r, Z); - cgen(r, &nod1); - } - gopcode(OASMUL, n->type, &nod1, &nod); - regfree(&nod1); - } - else - gopcode(OASMUL, n->type, r, &nod); - if(r == &nod1) - regfree(r); - gmove(&nod, &nod2); - if(nn != Z) - gmove(&nod, nn); - regfree(&nod); - if(hardleft) - regfree(&nod2); - break; - } - - /* - * get nod to be D_AX - * get nod1 to be D_DX - */ - if(nodreg(&nod, nn, D_AX)) { - regsalloc(&nod2, n); - gmove(&nod, &nod2); - v = reg[D_AX]; - reg[D_AX] = 0; - - if(isreg(l, D_AX)) { - nod3 = *n; - nod3.left = &nod2; - cgen(&nod3, nn); - } else - if(isreg(r, D_AX)) { - nod3 = *n; - nod3.right = &nod2; - cgen(&nod3, nn); - } else - cgen(n, nn); - - gmove(&nod2, &nod); - reg[D_AX] = v; - break; - } - if(nodreg(&nod1, nn, D_DX)) { - regsalloc(&nod2, n); - gmove(&nod1, &nod2); - v = reg[D_DX]; - reg[D_DX] = 0; - - if(isreg(l, D_DX)) { - nod3 = *n; - nod3.left = &nod2; - cgen(&nod3, nn); - } else - if(isreg(r, D_DX)) { - nod3 = *n; - nod3.right = &nod2; - cgen(&nod3, nn); - } else - cgen(n, nn); - - gmove(&nod2, &nod1); - reg[D_DX] = v; - break; - } - reg[D_AX]++; - reg[D_DX]++; - - if(l->complex >= r->complex) { - if(hardleft) - reglcgen(&nod2, l, Z); - else - nod2 = *l; - cgen(&nod2, &nod); - if(r->op == OCONST) { - switch(o) { - case OASDIV: - sdivgen(&nod2, r, &nod, &nod1); - goto divdone; - case OASLDIV: - udivgen(&nod2, r, &nod, &nod1); - divdone: - gmove(&nod1, &nod2); - if(nn != Z) - gmove(&nod1, nn); - goto freelxaxdx; - } - } - if(o == OASDIV || o == OASMOD) - gins(ACDQ, Z, Z); - if(o == OASLDIV || o == OASLMOD) - zeroregm(&nod1); - if(r->addable < INDEXED || r->op == OCONST || - !typeil[r->type->etype]) { - regalloc(&nod3, r, Z); - cgen(r, &nod3); - gopcode(o, l->type, &nod3, Z); - regfree(&nod3); - } else - gopcode(o, n->type, r, Z); - } else { - regalloc(&nod3, r, Z); - cgen(r, &nod3); - if(hardleft) - reglcgen(&nod2, l, Z); - else - nod2 = *l; - cgen(&nod2, &nod); - if(o == OASDIV || o == OASMOD) - gins(ACDQ, Z, Z); - if(o == OASLDIV || o == OASLMOD) - zeroregm(&nod1); - gopcode(o, l->type, &nod3, Z); - regfree(&nod3); - } - if(o == OASMOD || o == OASLMOD) { - gmove(&nod1, &nod2); - if(nn != Z) - gmove(&nod1, nn); - } else { - gmove(&nod, &nod2); - if(nn != Z) - gmove(&nod, nn); - } - freelxaxdx: - if(hardleft) - regfree(&nod2); - regfree(&nod); - regfree(&nod1); - break; - - fop: - if(l->complex >= r->complex) { - cgen(l, &fregnode0); - if(r->addable < INDEXED) { - cgen(r, &fregnode0); - fgopcode(o, &fregnode0, &fregnode1, 1, 0); - } else - fgopcode(o, r, &fregnode0, 0, 0); - } else { - cgen(r, &fregnode0); - if(l->addable < INDEXED) { - cgen(l, &fregnode0); - fgopcode(o, &fregnode0, &fregnode1, 1, 1); - } else - fgopcode(o, l, &fregnode0, 0, 1); - } - gmove(&fregnode0, nn); - break; - - asfop: - if(l->complex >= r->complex) { - if(hardleft) - reglcgen(&nod, l, Z); - else - nod = *l; - cgen(r, &fregnode0); - } else { - cgen(r, &fregnode0); - if(hardleft) - reglcgen(&nod, l, Z); - else - nod = *l; - } - if(!typefd[l->type->etype]) { - gmove(&nod, &fregnode0); - fgopcode(o, &fregnode0, &fregnode1, 1, 1); - } else - fgopcode(o, &nod, &fregnode0, 0, 1); - if(nn != Z) - gins(AFMOVD, &fregnode0, &fregnode0); - gmove(&fregnode0, &nod); - if(nn != Z) - gmove(&fregnode0, nn); - if(hardleft) - regfree(&nod); - break; - - asbitop: - regalloc(&nod4, n, nn); - if(l->complex >= r->complex) { - bitload(l, &nod, &nod1, &nod2, &nod4); - regalloc(&nod3, r, Z); - cgen(r, &nod3); - } else { - regalloc(&nod3, r, Z); - cgen(r, &nod3); - bitload(l, &nod, &nod1, &nod2, &nod4); - } - gmove(&nod, &nod4); - - if(typefd[nod3.type->etype]) - fgopcode(o, &fregnode0, &fregnode1, 1, 1); - else { - Node onod; - - /* incredible grot ... */ - onod = nod3; - onod.op = o; - onod.complex = 2; - onod.addable = 0; - onod.type = tfield; - onod.left = &nod4; - onod.right = &nod3; - cgen(&onod, Z); - } - regfree(&nod3); - gmove(&nod4, &nod); - regfree(&nod4); - bitstore(l, &nod, &nod1, &nod2, nn); - break; - - case OADDR: - if(nn == Z) { - nullwarn(l, Z); - break; - } - lcgen(l, nn); - break; - - case OFUNC: - if(l->complex >= FNX) { - if(l->op != OIND) - diag(n, "bad function call"); - - regret(&nod, l->left, 0, 0); - cgen(l->left, &nod); - regsalloc(&nod1, l->left); - gmove(&nod, &nod1); - regfree(&nod); - - nod = *n; - nod.left = &nod2; - nod2 = *l; - nod2.left = &nod1; - nod2.complex = 1; - cgen(&nod, nn); - - return; - } - gargs(r, &nod, &nod1); - if(l->addable < INDEXED) { - reglcgen(&nod, l, nn); - nod.op = OREGISTER; - gopcode(OFUNC, n->type, Z, &nod); - regfree(&nod); - } else - gopcode(OFUNC, n->type, Z, l); - if(REGARG >= 0 && reg[REGARG]) - reg[REGARG]--; - regret(&nod, n, l->type, 1); // update maxarg if nothing else - if(nn != Z) - gmove(&nod, nn); - if(nod.op == OREGISTER) - regfree(&nod); - if(nn == Z && hasdotdotdot(l->type) && typefd[n->type->etype]) - gins(AFMOVDP, &fregnode0, &fregnode0); - break; - - case OIND: - if(nn == Z) { - nullwarn(l, Z); - break; - } - regialloc(&nod, n, nn); - r = l; - while(r->op == OADD) - r = r->right; - if(sconst(r)) { - v = r->vconst; - r->vconst = 0; - cgen(l, &nod); - nod.xoffset += v; - r->vconst = v; - } else - cgen(l, &nod); - regind(&nod, n); - gmove(&nod, nn); - regfree(&nod); - break; - - case OEQ: - case ONE: - case OLE: - case OLT: - case OGE: - case OGT: - case OLO: - case OLS: - case OHI: - case OHS: - if(nn == Z) { - nullwarn(l, r); - break; - } - boolgen(n, 1, nn); - break; - - case OANDAND: - case OOROR: - boolgen(n, 1, nn); - if(nn == Z) - patch(p, pc); - break; - - case ONOT: - if(nn == Z) { - nullwarn(l, Z); - break; - } - boolgen(n, 1, nn); - break; - - case OCOMMA: - cgen(l, Z); - cgen(r, nn); - break; - - case OCAST: - if(nn == Z) { - nullwarn(l, Z); - break; - } - /* - * convert from types l->n->nn - */ - if(nocast(l->type, n->type) && nocast(n->type, nn->type)) { - /* both null, gen l->nn */ - cgen(l, nn); - break; - } - if(typev[l->type->etype]) { - cgen64(n, nn); - break; - } - regalloc(&nod, l, nn); - cgen(l, &nod); - regalloc(&nod1, n, &nod); - gmove(&nod, &nod1); - gmove(&nod1, nn); - regfree(&nod1); - regfree(&nod); - break; - - case ODOT: - sugen(l, nodrat, l->type->width); - if(nn == Z) - break; - warn(n, "non-interruptable temporary"); - nod = *nodrat; - if(!r || r->op != OCONST) { - diag(n, "DOT and no offset"); - break; - } - nod.xoffset += (int32)r->vconst; - nod.type = n->type; - cgen(&nod, nn); - break; - - case OCOND: - bcgen(l, 1); - p1 = p; - cgen(r->left, nn); - gbranch(OGOTO); - patch(p1, pc); - p1 = p; - cgen(r->right, nn); - patch(p1, pc); - break; - - case OPOSTINC: - case OPOSTDEC: - v = 1; - if(l->type->etype == TIND) - v = l->type->link->width; - if(o == OPOSTDEC) - v = -v; - if(l->op == OBIT) - goto bitinc; - if(nn == Z) - goto pre; - - if(hardleft) - reglcgen(&nod, l, Z); - else - nod = *l; - - if(typefd[n->type->etype]) - goto fltinc; - gmove(&nod, nn); - gopcode(OADD, n->type, nodconst(v), &nod); - if(hardleft) - regfree(&nod); - break; - - case OPREINC: - case OPREDEC: - v = 1; - if(l->type->etype == TIND) - v = l->type->link->width; - if(o == OPREDEC) - v = -v; - if(l->op == OBIT) - goto bitinc; - - pre: - if(hardleft) - reglcgen(&nod, l, Z); - else - nod = *l; - if(typefd[n->type->etype]) - goto fltinc; - gopcode(OADD, n->type, nodconst(v), &nod); - if(nn != Z) - gmove(&nod, nn); - if(hardleft) - regfree(&nod); - break; - - fltinc: - gmove(&nod, &fregnode0); - if(nn != Z && (o == OPOSTINC || o == OPOSTDEC)) - gins(AFMOVD, &fregnode0, &fregnode0); - gins(AFLD1, Z, Z); - if(v < 0) - fgopcode(OSUB, &fregnode0, &fregnode1, 1, 0); - else - fgopcode(OADD, &fregnode0, &fregnode1, 1, 0); - if(nn != Z && (o == OPREINC || o == OPREDEC)) - gins(AFMOVD, &fregnode0, &fregnode0); - gmove(&fregnode0, &nod); - if(hardleft) - regfree(&nod); - break; - - bitinc: - if(nn != Z && (o == OPOSTINC || o == OPOSTDEC)) { - bitload(l, &nod, &nod1, &nod2, Z); - gmove(&nod, nn); - gopcode(OADD, tfield, nodconst(v), &nod); - bitstore(l, &nod, &nod1, &nod2, Z); - break; - } - bitload(l, &nod, &nod1, &nod2, nn); - gopcode(OADD, tfield, nodconst(v), &nod); - bitstore(l, &nod, &nod1, &nod2, nn); - break; - } -done: - cursafe = curs; -} - -void -reglcgen(Node *t, Node *n, Node *nn) -{ - Node *r; - int32 v; - - regialloc(t, n, nn); - if(n->op == OIND) { - r = n->left; - while(r->op == OADD) - r = r->right; - if(sconst(r)) { - v = r->vconst; - r->vconst = 0; - lcgen(n, t); - t->xoffset += v; - r->vconst = v; - regind(t, n); - return; - } - } - lcgen(n, t); - regind(t, n); -} - -void -lcgen(Node *n, Node *nn) -{ - Prog *p1; - Node nod; - - if(debug['g']) { - prtree(nn, "lcgen lhs"); - prtree(n, "lcgen"); - } - if(n == Z || n->type == T) - return; - if(nn == Z) { - nn = &nod; - regalloc(&nod, n, Z); - } - switch(n->op) { - default: - if(n->addable < INDEXED) { - diag(n, "unknown op in lcgen: %O", n->op); - break; - } - gopcode(OADDR, n->type, n, nn); - break; - - case OCOMMA: - cgen(n->left, n->left); - lcgen(n->right, nn); - break; - - case OIND: - cgen(n->left, nn); - break; - - case OCOND: - bcgen(n->left, 1); - p1 = p; - lcgen(n->right->left, nn); - gbranch(OGOTO); - patch(p1, pc); - p1 = p; - lcgen(n->right->right, nn); - patch(p1, pc); - break; - } -} - -void -bcgen(Node *n, int true) -{ - - if(n->type == T) - gbranch(OGOTO); - else - boolgen(n, true, Z); -} - -void -boolgen(Node *n, int true, Node *nn) -{ - int o; - Prog *p1, *p2, *p3; - Node *l, *r, nod, nod1; - int32 curs; - - if(debug['g']) { - prtree(nn, "boolgen lhs"); - prtree(n, "boolgen"); - } - curs = cursafe; - l = n->left; - r = n->right; - switch(n->op) { - - default: - if(typev[n->type->etype]) { - testv(n, true); - goto com; - } - o = ONE; - if(true) - o = OEQ; - if(typefd[n->type->etype]) { - if(n->addable < INDEXED) { - cgen(n, &fregnode0); - gins(AFLDZ, Z, Z); - fgopcode(o, &fregnode0, &fregnode1, 1, 1); - } else { - gins(AFLDZ, Z, Z); - fgopcode(o, n, &fregnode0, 0, 1); - } - goto com; - } - /* bad, 13 is address of external that becomes constant */ - if(n->addable >= INDEXED && n->addable != 13) { - gopcode(o, n->type, n, nodconst(0)); - goto com; - } - regalloc(&nod, n, nn); - cgen(n, &nod); - gopcode(o, n->type, &nod, nodconst(0)); - regfree(&nod); - goto com; - - case OCONST: - o = vconst(n); - if(!true) - o = !o; - gbranch(OGOTO); - if(o) { - p1 = p; - gbranch(OGOTO); - patch(p1, pc); - } - goto com; - - case OCOMMA: - cgen(l, Z); - boolgen(r, true, nn); - break; - - case ONOT: - boolgen(l, !true, nn); - break; - - case OCOND: - bcgen(l, 1); - p1 = p; - bcgen(r->left, true); - p2 = p; - gbranch(OGOTO); - patch(p1, pc); - p1 = p; - bcgen(r->right, !true); - patch(p2, pc); - p2 = p; - gbranch(OGOTO); - patch(p1, pc); - patch(p2, pc); - goto com; - - case OANDAND: - if(!true) - goto caseor; - - caseand: - bcgen(l, true); - p1 = p; - bcgen(r, !true); - p2 = p; - patch(p1, pc); - gbranch(OGOTO); - patch(p2, pc); - goto com; - - case OOROR: - if(!true) - goto caseand; - - caseor: - bcgen(l, !true); - p1 = p; - bcgen(r, !true); - p2 = p; - gbranch(OGOTO); - patch(p1, pc); - patch(p2, pc); - goto com; - - case OEQ: - case ONE: - case OLE: - case OLT: - case OGE: - case OGT: - case OHI: - case OHS: - case OLO: - case OLS: - o = n->op; - if(typev[l->type->etype]) { - if(!true) - n->op = comrel[relindex(o)]; - cgen64(n, Z); - goto com; - } - if(true && typefd[l->type->etype] && (o == OEQ || o == ONE)) { - // Cannot rewrite !(l == r) into l != r with float64; it breaks NaNs. - // Jump around instead. - boolgen(n, 0, Z); - p1 = p; - gbranch(OGOTO); - patch(p1, pc); - goto com; - } - if(true) - o = comrel[relindex(o)]; - if(l->complex >= FNX && r->complex >= FNX) { - regret(&nod, r, 0, 0); - cgen(r, &nod); - regsalloc(&nod1, r); - gmove(&nod, &nod1); - regfree(&nod); - nod = *n; - nod.right = &nod1; - boolgen(&nod, true, nn); - break; - } - if(typefd[l->type->etype]) { - if(l->complex >= r->complex) { - cgen(l, &fregnode0); - if(r->addable < INDEXED) { - cgen(r, &fregnode0); - o = invrel[relindex(o)]; - fgopcode(o, &fregnode0, &fregnode1, 1, 1); - } else - fgopcode(o, r, &fregnode0, 0, 1); - } else { - o = invrel[relindex(o)]; - cgen(r, &fregnode0); - if(l->addable < INDEXED) { - cgen(l, &fregnode0); - o = invrel[relindex(o)]; - fgopcode(o, &fregnode0, &fregnode1, 1, 1); - } else - fgopcode(o, l, &fregnode0, 0, 1); - } - switch(o) { - case OEQ: - // Already emitted AJEQ; want AJEQ and AJPC. - p1 = p; - gbranch(OGOTO); - p2 = p; - patch(p1, pc); - gins(AJPC, Z, Z); - patch(p2, pc); - break; - - case ONE: - // Already emitted AJNE; want AJNE or AJPS. - p1 = p; - gins(AJPS, Z, Z); - p2 = p; - gbranch(OGOTO); - p3 = p; - patch(p1, pc); - patch(p2, pc); - gbranch(OGOTO); - patch(p3, pc); - break; - } - goto com; - } - if(l->op == OCONST) { - o = invrel[relindex(o)]; - /* bad, 13 is address of external that becomes constant */ - if(r->addable < INDEXED || r->addable == 13) { - regalloc(&nod, r, nn); - cgen(r, &nod); - gopcode(o, l->type, &nod, l); - regfree(&nod); - } else - gopcode(o, l->type, r, l); - goto com; - } - if(l->complex >= r->complex) { - regalloc(&nod, l, nn); - cgen(l, &nod); - if(r->addable < INDEXED) { - regalloc(&nod1, r, Z); - cgen(r, &nod1); - gopcode(o, l->type, &nod, &nod1); - regfree(&nod1); - } else - gopcode(o, l->type, &nod, r); - regfree(&nod); - goto com; - } - regalloc(&nod, r, nn); - cgen(r, &nod); - if(l->addable < INDEXED || l->addable == 13) { - regalloc(&nod1, l, Z); - cgen(l, &nod1); - if(typechlp[l->type->etype]) - gopcode(o, types[TINT], &nod1, &nod); - else - gopcode(o, l->type, &nod1, &nod); - regfree(&nod1); - } else - gopcode(o, l->type, l, &nod); - regfree(&nod); - - com: - if(nn != Z) { - p1 = p; - gmove(nodconst(1L), nn); - gbranch(OGOTO); - p2 = p; - patch(p1, pc); - gmove(nodconst(0L), nn); - patch(p2, pc); - } - break; - } - cursafe = curs; -} - -void -sugen(Node *n, Node *nn, int32 w) -{ - Prog *p1; - Node nod0, nod1, nod2, nod3, nod4, *h, *l, *r; - Type *t; - int c, v, x; - - if(n == Z || n->type == T) - return; - if(debug['g']) { - prtree(nn, "sugen lhs"); - prtree(n, "sugen"); - } - if(nn == nodrat) - if(w > nrathole) - nrathole = w; - switch(n->op) { - case OIND: - if(nn == Z) { - nullwarn(n->left, Z); - break; - } - - default: - goto copy; - - case OCONST: - if(n->type && typev[n->type->etype]) { - if(nn == Z) { - nullwarn(n->left, Z); - break; - } - - if(nn->op == OREGPAIR) { - loadpair(n, nn); - break; - } - else if(!vaddr(nn, 0)) { - t = nn->type; - nn->type = types[TLONG]; - reglcgen(&nod1, nn, Z); - nn->type = t; - - gmove(lo64(n), &nod1); - nod1.xoffset += SZ_LONG; - gmove(hi64(n), &nod1); - regfree(&nod1); - } - else { - gins(AMOVL, lo64(n), nn); - nn->xoffset += SZ_LONG; - gins(AMOVL, hi64(n), nn); - nn->xoffset -= SZ_LONG; - break; - } - break; - } - goto copy; - - case ODOT: - l = n->left; - sugen(l, nodrat, l->type->width); - if(nn == Z) - break; - warn(n, "non-interruptable temporary"); - nod1 = *nodrat; - r = n->right; - if(!r || r->op != OCONST) { - diag(n, "DOT and no offset"); - break; - } - nod1.xoffset += (int32)r->vconst; - nod1.type = n->type; - sugen(&nod1, nn, w); - break; - - case OSTRUCT: - /* - * rewrite so lhs has no fn call - */ - if(nn != Z && side(nn)) { - nod1 = *n; - nod1.type = typ(TIND, n->type); - regret(&nod2, &nod1, 0, 0); - lcgen(nn, &nod2); - regsalloc(&nod0, &nod1); - cgen(&nod2, &nod0); - regfree(&nod2); - - nod1 = *n; - nod1.op = OIND; - nod1.left = &nod0; - nod1.right = Z; - nod1.complex = 1; - - sugen(n, &nod1, w); - return; - } - - r = n->left; - for(t = n->type->link; t != T; t = t->down) { - l = r; - if(r->op == OLIST) { - l = r->left; - r = r->right; - } - if(nn == Z) { - cgen(l, nn); - continue; - } - /* - * hand craft *(&nn + o) = l - */ - nod0 = znode; - nod0.op = OAS; - nod0.type = t; - nod0.left = &nod1; - nod0.right = nil; - - nod1 = znode; - nod1.op = OIND; - nod1.type = t; - nod1.left = &nod2; - - nod2 = znode; - nod2.op = OADD; - nod2.type = typ(TIND, t); - nod2.left = &nod3; - nod2.right = &nod4; - - nod3 = znode; - nod3.op = OADDR; - nod3.type = nod2.type; - nod3.left = nn; - - nod4 = znode; - nod4.op = OCONST; - nod4.type = nod2.type; - nod4.vconst = t->offset; - - ccom(&nod0); - acom(&nod0); - xcom(&nod0); - nod0.addable = 0; - nod0.right = l; - - // prtree(&nod0, "hand craft"); - cgen(&nod0, Z); - } - break; - - case OAS: - if(nn == Z) { - if(n->addable < INDEXED) - sugen(n->right, n->left, w); - break; - } - - sugen(n->right, nodrat, w); - warn(n, "non-interruptable temporary"); - sugen(nodrat, n->left, w); - sugen(nodrat, nn, w); - break; - - case OFUNC: - if(!hasdotdotdot(n->left->type)) { - cgen(n, Z); - if(nn != Z) { - curarg -= n->type->width; - regret(&nod1, n, n->left->type, 1); - if(nn->complex >= FNX) { - regsalloc(&nod2, n); - cgen(&nod1, &nod2); - nod1 = nod2; - } - cgen(&nod1, nn); - } - break; - } - if(nn == Z) { - sugen(n, nodrat, w); - break; - } - h = nn; - if(nn->op == OREGPAIR) { - regsalloc(&nod1, nn); - nn = &nod1; - } - if(nn->op != OIND) { - nn = new1(OADDR, nn, Z); - nn->type = types[TIND]; - nn->addable = 0; - } else - nn = nn->left; - n = new(OFUNC, n->left, new(OLIST, nn, n->right)); - n->type = types[TVOID]; - n->left->type = types[TVOID]; - cgen(n, Z); - if(h->op == OREGPAIR) - loadpair(nn->left, h); - break; - - case OCOND: - bcgen(n->left, 1); - p1 = p; - sugen(n->right->left, nn, w); - gbranch(OGOTO); - patch(p1, pc); - p1 = p; - sugen(n->right->right, nn, w); - patch(p1, pc); - break; - - case OCOMMA: - cgen(n->left, Z); - sugen(n->right, nn, w); - break; - } - return; - -copy: - if(nn == Z) { - switch(n->op) { - case OASADD: - case OASSUB: - case OASAND: - case OASOR: - case OASXOR: - - case OASMUL: - case OASLMUL: - - - case OASASHL: - case OASASHR: - case OASLSHR: - break; - - case OPOSTINC: - case OPOSTDEC: - case OPREINC: - case OPREDEC: - break; - - default: - return; - } - } - - v = w == 8; - if(n->complex >= FNX && nn != nil && nn->complex >= FNX) { - t = nn->type; - nn->type = types[TLONG]; - regialloc(&nod1, nn, Z); - lcgen(nn, &nod1); - regsalloc(&nod2, nn); - nn->type = t; - - gins(AMOVL, &nod1, &nod2); - regfree(&nod1); - - nod2.type = typ(TIND, t); - - nod1 = nod2; - nod1.op = OIND; - nod1.left = &nod2; - nod1.right = Z; - nod1.complex = 1; - nod1.type = t; - - sugen(n, &nod1, w); - return; - } - - x = 0; - if(v) { - if(nn != nil && nn->complex >= FNX) { - t = nn->type; - nn->type = types[TLONG]; - regialloc(&nod2, nn, Z); - lcgen(nn, &nod2); - nn->type = t; - - nod2.type = typ(TIND, t); - - nod1 = nod2; - nod1.op = OIND; - nod1.left = &nod2; - nod1.right = Z; - nod1.complex = 1; - nod1.type = t; - - sugen(n, &nod1, w); - regfree(&nod2); - return; - } - - c = cursafe; - if(n->left != Z && n->left->complex >= FNX - && n->right != Z && n->right->complex >= FNX) { -// warn(n, "toughie"); - regsalloc(&nod1, n->right); - cgen(n->right, &nod1); - nod2 = *n; - nod2.right = &nod1; - cgen(&nod2, nn); - cursafe = c; - return; - } - if(cgen64(n, nn)) { - cursafe = c; - return; - } - if(n->op == OCOM) { - n = n->left; - x = 1; - } - } - - /* botch, need to save in .safe */ - c = 0; - if(n->complex > nn->complex) { - t = n->type; - n->type = types[TLONG]; - if(v) { - regalloc(&nod0, n, Z); - if(!vaddr(n, 0)) { - reglcgen(&nod1, n, Z); - n->type = t; - n = &nod1; - } - else - n->type = t; - } - else { - nodreg(&nod1, n, D_SI); - if(reg[D_SI]) { - gins(APUSHL, &nod1, Z); - c |= 1; - reg[D_SI]++; - } - lcgen(n, &nod1); - n->type = t; - } - - t = nn->type; - nn->type = types[TLONG]; - if(v) { - if(!vaddr(nn, 0)) { - reglcgen(&nod2, nn, Z); - nn->type = t; - nn = &nod2; - } - else - nn->type = t; - } - else { - nodreg(&nod2, nn, D_DI); - if(reg[D_DI]) { - gins(APUSHL, &nod2, Z); - c |= 2; - reg[D_DI]++; - } - lcgen(nn, &nod2); - nn->type = t; - } - } else { - t = nn->type; - nn->type = types[TLONG]; - if(v) { - regalloc(&nod0, nn, Z); - if(!vaddr(nn, 0)) { - reglcgen(&nod2, nn, Z); - nn->type = t; - nn = &nod2; - } - else - nn->type = t; - } - else { - nodreg(&nod2, nn, D_DI); - if(reg[D_DI]) { - gins(APUSHL, &nod2, Z); - c |= 2; - reg[D_DI]++; - } - lcgen(nn, &nod2); - nn->type = t; - } - - t = n->type; - n->type = types[TLONG]; - if(v) { - if(!vaddr(n, 0)) { - reglcgen(&nod1, n, Z); - n->type = t; - n = &nod1; - } - else - n->type = t; - } - else { - nodreg(&nod1, n, D_SI); - if(reg[D_SI]) { - gins(APUSHL, &nod1, Z); - c |= 1; - reg[D_SI]++; - } - lcgen(n, &nod1); - n->type = t; - } - } - if(v) { - gins(AMOVL, n, &nod0); - if(x) - gins(ANOTL, Z, &nod0); - gins(AMOVL, &nod0, nn); - n->xoffset += SZ_LONG; - nn->xoffset += SZ_LONG; - gins(AMOVL, n, &nod0); - if(x) - gins(ANOTL, Z, &nod0); - gins(AMOVL, &nod0, nn); - n->xoffset -= SZ_LONG; - nn->xoffset -= SZ_LONG; - if(nn == &nod2) - regfree(&nod2); - if(n == &nod1) - regfree(&nod1); - regfree(&nod0); - return; - } - nodreg(&nod3, n, D_CX); - if(reg[D_CX]) { - gins(APUSHL, &nod3, Z); - c |= 4; - reg[D_CX]++; - } - gins(AMOVL, nodconst(w/SZ_LONG), &nod3); - gins(ACLD, Z, Z); - gins(AREP, Z, Z); - gins(AMOVSL, Z, Z); - if(c & 4) { - gins(APOPL, Z, &nod3); - reg[D_CX]--; - } - if(c & 2) { - gins(APOPL, Z, &nod2); - reg[nod2.reg]--; - } - if(c & 1) { - gins(APOPL, Z, &nod1); - reg[nod1.reg]--; - } -} diff --git a/src/cmd/8c/cgen64.c b/src/cmd/8c/cgen64.c deleted file mode 100644 index 3424f762c..000000000 --- a/src/cmd/8c/cgen64.c +++ /dev/null @@ -1,2657 +0,0 @@ -// Inferno utils/8c/cgen64.c -// http://code.google.com/p/inferno-os/source/browse/utils/8c/cgen64.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -void -zeroregm(Node *n) -{ - gins(AMOVL, nodconst(0), n); -} - -/* do we need to load the address of a vlong? */ -int -vaddr(Node *n, int a) -{ - switch(n->op) { - case ONAME: - if(a) - return 1; - return !(n->class == CEXTERN || n->class == CGLOBL || n->class == CSTATIC); - - case OCONST: - case OREGISTER: - case OINDREG: - return 1; - } - return 0; -} - -int32 -hi64v(Node *n) -{ - if(align(0, types[TCHAR], Aarg1, nil)) /* isbigendian */ - return (int32)(n->vconst) & ~0L; - else - return (int32)((uvlong)n->vconst>>32) & ~0L; -} - -int32 -lo64v(Node *n) -{ - if(align(0, types[TCHAR], Aarg1, nil)) /* isbigendian */ - return (int32)((uvlong)n->vconst>>32) & ~0L; - else - return (int32)(n->vconst) & ~0L; -} - -Node * -hi64(Node *n) -{ - return nodconst(hi64v(n)); -} - -Node * -lo64(Node *n) -{ - return nodconst(lo64v(n)); -} - -static Node * -anonreg(void) -{ - Node *n; - - n = new(OREGISTER, Z, Z); - n->reg = D_NONE; - n->type = types[TLONG]; - return n; -} - -static Node * -regpair(Node *n, Node *t) -{ - Node *r; - - if(n != Z && n->op == OREGPAIR) - return n; - r = new(OREGPAIR, anonreg(), anonreg()); - if(n != Z) - r->type = n->type; - else - r->type = t->type; - return r; -} - -static void -evacaxdx(Node *r) -{ - Node nod1, nod2; - - if(r->reg == D_AX || r->reg == D_DX) { - reg[D_AX]++; - reg[D_DX]++; - /* - * this is just an optim that should - * check for spill - */ - r->type = types[TULONG]; - regalloc(&nod1, r, Z); - nodreg(&nod2, Z, r->reg); - gins(AMOVL, &nod2, &nod1); - regfree(r); - r->reg = nod1.reg; - reg[D_AX]--; - reg[D_DX]--; - } -} - -/* lazy instantiation of register pair */ -static int -instpair(Node *n, Node *l) -{ - int r; - - r = 0; - if(n->left->reg == D_NONE) { - if(l != Z) { - n->left->reg = l->reg; - r = 1; - } - else - regalloc(n->left, n->left, Z); - } - if(n->right->reg == D_NONE) - regalloc(n->right, n->right, Z); - return r; -} - -static void -zapreg(Node *n) -{ - if(n->reg != D_NONE) { - regfree(n); - n->reg = D_NONE; - } -} - -static void -freepair(Node *n) -{ - regfree(n->left); - regfree(n->right); -} - -/* n is not OREGPAIR, nn is */ -void -loadpair(Node *n, Node *nn) -{ - Node nod; - - instpair(nn, Z); - if(n->op == OCONST) { - gins(AMOVL, lo64(n), nn->left); - n->xoffset += SZ_LONG; - gins(AMOVL, hi64(n), nn->right); - n->xoffset -= SZ_LONG; - return; - } - if(!vaddr(n, 0)) { - /* steal the right register for the laddr */ - nod = regnode; - nod.reg = nn->right->reg; - lcgen(n, &nod); - n = &nod; - regind(n, n); - n->xoffset = 0; - } - gins(AMOVL, n, nn->left); - n->xoffset += SZ_LONG; - gins(AMOVL, n, nn->right); - n->xoffset -= SZ_LONG; -} - -/* n is OREGPAIR, nn is not */ -static void -storepair(Node *n, Node *nn, int f) -{ - Node nod; - - if(!vaddr(nn, 0)) { - reglcgen(&nod, nn, Z); - nn = &nod; - } - gins(AMOVL, n->left, nn); - nn->xoffset += SZ_LONG; - gins(AMOVL, n->right, nn); - nn->xoffset -= SZ_LONG; - if(nn == &nod) - regfree(&nod); - if(f) - freepair(n); -} - -enum -{ -/* 4 only, see WW */ - WNONE = 0, - WCONST, - WADDR, - WHARD, -}; - -static int -whatof(Node *n, int a) -{ - if(n->op == OCONST) - return WCONST; - return !vaddr(n, a) ? WHARD : WADDR; -} - -/* can upgrade an extern to addr for AND */ -static int -reduxv(Node *n) -{ - return lo64v(n) == 0 || hi64v(n) == 0; -} - -int -cond(int op) -{ - switch(op) { - case OANDAND: - case OOROR: - case ONOT: - return 1; - - case OEQ: - case ONE: - case OLE: - case OLT: - case OGE: - case OGT: - case OHI: - case OHS: - case OLO: - case OLS: - return 1; - } - return 0; -} - -/* - * for a func operand call it and then return - * the safe node - */ -static Node * -vfunc(Node *n, Node *nn) -{ - Node *t; - - if(n->op != OFUNC) - return n; - t = new(0, Z, Z); - if(nn == Z || nn == nodret) - nn = n; - regsalloc(t, nn); - sugen(n, t, 8); - return t; -} - -/* try to steal a reg */ -static int -getreg(Node **np, Node *t, int r) -{ - Node *n, *p; - - n = *np; - if(n->reg == r) { - p = new(0, Z, Z); - regalloc(p, n, Z); - gins(AMOVL, n, p); - *t = *n; - *np = p; - return 1; - } - return 0; -} - -static Node * -snarfreg(Node *n, Node *t, int r, Node *d, Node *c) -{ - if(n == Z || n->op != OREGPAIR || (!getreg(&n->left, t, r) && !getreg(&n->right, t, r))) { - if(nodreg(t, Z, r)) { - regalloc(c, d, Z); - gins(AMOVL, t, c); - reg[r]++; - return c; - } - reg[r]++; - } - return Z; -} - -enum -{ - Vstart = OEND, - - Vgo, - Vamv, - Vmv, - Vzero, - Vop, - Vopx, - Vins, - Vins0, - Vinsl, - Vinsr, - Vinsla, - Vinsra, - Vinsx, - Vmul, - Vshll, - VT, - VF, - V_l_lo_f, - V_l_hi_f, - V_l_lo_t, - V_l_hi_t, - V_l_lo_u, - V_l_hi_u, - V_r_lo_f, - V_r_hi_f, - V_r_lo_t, - V_r_hi_t, - V_r_lo_u, - V_r_hi_u, - Vspazz, - Vend, - - V_T0, - V_T1, - V_F0, - V_F1, - - V_a0, - V_a1, - V_f0, - V_f1, - - V_p0, - V_p1, - V_p2, - V_p3, - V_p4, - - V_s0, - V_s1, - V_s2, - V_s3, - V_s4, - - C00, - C01, - C31, - C32, - - O_l_lo, - O_l_hi, - O_r_lo, - O_r_hi, - O_t_lo, - O_t_hi, - O_l, - O_r, - O_l_rp, - O_r_rp, - O_t_rp, - O_r0, - O_r1, - O_Zop, - - O_a0, - O_a1, - - V_C0, - V_C1, - - V_S0, - V_S1, - - VOPS = 5, - VLEN = 5, - VARGS = 2, - - S00 = 0, - Sc0, - Sc1, - Sc2, - Sac3, - Sac4, - S10, - - SAgen = 0, - SAclo, - SAc32, - SAchi, - SAdgen, - SAdclo, - SAdc32, - SAdchi, - - B0c = 0, - Bca, - Bac, - - T0i = 0, - Tii, - - Bop0 = 0, - Bop1, -}; - -/* - * _testv: - * CMPL lo,$0 - * JNE true - * CMPL hi,$0 - * JNE true - * GOTO false - * false: - * GOTO code - * true: - * GOTO patchme - * code: - */ - -static uchar testi[][VLEN] = -{ - {Vop, ONE, O_l_lo, C00}, - {V_s0, Vop, ONE, O_l_hi, C00}, - {V_s1, Vgo, V_s2, Vgo, V_s3}, - {VF, V_p0, V_p1, VT, V_p2}, - {Vgo, V_p3}, - {VT, V_p0, V_p1, VF, V_p2}, - {Vend}, -}; - -/* shift left general case */ -static uchar shll00[][VLEN] = -{ - {Vop, OGE, O_r, C32}, - {V_s0, Vinsl, ASHLL, O_r, O_l_rp}, - {Vins, ASHLL, O_r, O_l_lo, Vgo}, - {V_p0, V_s0}, - {Vins, ASHLL, O_r, O_l_lo}, - {Vins, AMOVL, O_l_lo, O_l_hi}, - {Vzero, O_l_lo, V_p0, Vend}, -}; - -/* shift left rp, const < 32 */ -static uchar shllc0[][VLEN] = -{ - {Vinsl, ASHLL, O_r, O_l_rp}, - {Vshll, O_r, O_l_lo, Vend}, -}; - -/* shift left rp, const == 32 */ -static uchar shllc1[][VLEN] = -{ - {Vins, AMOVL, O_l_lo, O_l_hi}, - {Vzero, O_l_lo, Vend}, -}; - -/* shift left rp, const > 32 */ -static uchar shllc2[][VLEN] = -{ - {Vshll, O_r, O_l_lo}, - {Vins, AMOVL, O_l_lo, O_l_hi}, - {Vzero, O_l_lo, Vend}, -}; - -/* shift left addr, const == 32 */ -static uchar shllac3[][VLEN] = -{ - {Vins, AMOVL, O_l_lo, O_t_hi}, - {Vzero, O_t_lo, Vend}, -}; - -/* shift left addr, const > 32 */ -static uchar shllac4[][VLEN] = -{ - {Vins, AMOVL, O_l_lo, O_t_hi}, - {Vshll, O_r, O_t_hi}, - {Vzero, O_t_lo, Vend}, -}; - -/* shift left of constant */ -static uchar shll10[][VLEN] = -{ - {Vop, OGE, O_r, C32}, - {V_s0, Vins, AMOVL, O_l_lo, O_t_lo}, - {Vins, AMOVL, O_l_hi, O_t_hi}, - {Vinsl, ASHLL, O_r, O_t_rp}, - {Vins, ASHLL, O_r, O_t_lo, Vgo}, - {V_p0, V_s0}, - {Vins, AMOVL, O_l_lo, O_t_hi}, - {V_l_lo_t, Vins, ASHLL, O_r, O_t_hi}, - {Vzero, O_t_lo, V_p0, Vend}, -}; - -static uchar (*shlltab[])[VLEN] = -{ - shll00, - shllc0, - shllc1, - shllc2, - shllac3, - shllac4, - shll10, -}; - -/* shift right general case */ -static uchar shrl00[][VLEN] = -{ - {Vop, OGE, O_r, C32}, - {V_s0, Vinsr, ASHRL, O_r, O_l_rp}, - {Vins, O_a0, O_r, O_l_hi, Vgo}, - {V_p0, V_s0}, - {Vins, O_a0, O_r, O_l_hi}, - {Vins, AMOVL, O_l_hi, O_l_lo}, - {V_T1, Vzero, O_l_hi}, - {V_F1, Vins, ASARL, C31, O_l_hi}, - {V_p0, Vend}, -}; - -/* shift right rp, const < 32 */ -static uchar shrlc0[][VLEN] = -{ - {Vinsr, ASHRL, O_r, O_l_rp}, - {Vins, O_a0, O_r, O_l_hi, Vend}, -}; - -/* shift right rp, const == 32 */ -static uchar shrlc1[][VLEN] = -{ - {Vins, AMOVL, O_l_hi, O_l_lo}, - {V_T1, Vzero, O_l_hi}, - {V_F1, Vins, ASARL, C31, O_l_hi}, - {Vend}, -}; - -/* shift right rp, const > 32 */ -static uchar shrlc2[][VLEN] = -{ - {Vins, O_a0, O_r, O_l_hi}, - {Vins, AMOVL, O_l_hi, O_l_lo}, - {V_T1, Vzero, O_l_hi}, - {V_F1, Vins, ASARL, C31, O_l_hi}, - {Vend}, -}; - -/* shift right addr, const == 32 */ -static uchar shrlac3[][VLEN] = -{ - {Vins, AMOVL, O_l_hi, O_t_lo}, - {V_T1, Vzero, O_t_hi}, - {V_F1, Vins, AMOVL, O_t_lo, O_t_hi}, - {V_F1, Vins, ASARL, C31, O_t_hi}, - {Vend}, -}; - -/* shift right addr, const > 32 */ -static uchar shrlac4[][VLEN] = -{ - {Vins, AMOVL, O_l_hi, O_t_lo}, - {Vins, O_a0, O_r, O_t_lo}, - {V_T1, Vzero, O_t_hi}, - {V_F1, Vins, AMOVL, O_t_lo, O_t_hi}, - {V_F1, Vins, ASARL, C31, O_t_hi}, - {Vend}, -}; - -/* shift right of constant */ -static uchar shrl10[][VLEN] = -{ - {Vop, OGE, O_r, C32}, - {V_s0, Vins, AMOVL, O_l_lo, O_t_lo}, - {Vins, AMOVL, O_l_hi, O_t_hi}, - {Vinsr, ASHRL, O_r, O_t_rp}, - {Vins, O_a0, O_r, O_t_hi, Vgo}, - {V_p0, V_s0}, - {Vins, AMOVL, O_l_hi, O_t_lo}, - {V_l_hi_t, Vins, O_a0, O_r, O_t_lo}, - {V_l_hi_u, V_S1}, - {V_T1, Vzero, O_t_hi, V_p0}, - {V_F1, Vins, AMOVL, O_t_lo, O_t_hi}, - {V_F1, Vins, ASARL, C31, O_t_hi}, - {Vend}, -}; - -static uchar (*shrltab[])[VLEN] = -{ - shrl00, - shrlc0, - shrlc1, - shrlc2, - shrlac3, - shrlac4, - shrl10, -}; - -/* shift asop left general case */ -static uchar asshllgen[][VLEN] = -{ - {V_a0, V_a1}, - {Vop, OGE, O_r, C32}, - {V_s0, Vins, AMOVL, O_l_lo, O_r0}, - {Vins, AMOVL, O_l_hi, O_r1}, - {Vinsla, ASHLL, O_r, O_r0}, - {Vins, ASHLL, O_r, O_r0}, - {Vins, AMOVL, O_r1, O_l_hi}, - {Vins, AMOVL, O_r0, O_l_lo, Vgo}, - {V_p0, V_s0}, - {Vins, AMOVL, O_l_lo, O_r0}, - {Vzero, O_l_lo}, - {Vins, ASHLL, O_r, O_r0}, - {Vins, AMOVL, O_r0, O_l_hi, V_p0}, - {V_f0, V_f1, Vend}, -}; - -/* shift asop left, const < 32 */ -static uchar asshllclo[][VLEN] = -{ - {V_a0, V_a1}, - {Vins, AMOVL, O_l_lo, O_r0}, - {Vins, AMOVL, O_l_hi, O_r1}, - {Vinsla, ASHLL, O_r, O_r0}, - {Vshll, O_r, O_r0}, - {Vins, AMOVL, O_r1, O_l_hi}, - {Vins, AMOVL, O_r0, O_l_lo}, - {V_f0, V_f1, Vend}, -}; - -/* shift asop left, const == 32 */ -static uchar asshllc32[][VLEN] = -{ - {V_a0}, - {Vins, AMOVL, O_l_lo, O_r0}, - {Vzero, O_l_lo}, - {Vins, AMOVL, O_r0, O_l_hi}, - {V_f0, Vend}, -}; - -/* shift asop left, const > 32 */ -static uchar asshllchi[][VLEN] = -{ - {V_a0}, - {Vins, AMOVL, O_l_lo, O_r0}, - {Vzero, O_l_lo}, - {Vshll, O_r, O_r0}, - {Vins, AMOVL, O_r0, O_l_hi}, - {V_f0, Vend}, -}; - -/* shift asop dest left general case */ -static uchar asdshllgen[][VLEN] = -{ - {Vop, OGE, O_r, C32}, - {V_s0, Vins, AMOVL, O_l_lo, O_t_lo}, - {Vins, AMOVL, O_l_hi, O_t_hi}, - {Vinsl, ASHLL, O_r, O_t_rp}, - {Vins, ASHLL, O_r, O_t_lo}, - {Vins, AMOVL, O_t_hi, O_l_hi}, - {Vins, AMOVL, O_t_lo, O_l_lo, Vgo}, - {V_p0, V_s0}, - {Vins, AMOVL, O_l_lo, O_t_hi}, - {Vzero, O_l_lo}, - {Vins, ASHLL, O_r, O_t_hi}, - {Vzero, O_t_lo}, - {Vins, AMOVL, O_t_hi, O_l_hi, V_p0}, - {Vend}, -}; - -/* shift asop dest left, const < 32 */ -static uchar asdshllclo[][VLEN] = -{ - {Vins, AMOVL, O_l_lo, O_t_lo}, - {Vins, AMOVL, O_l_hi, O_t_hi}, - {Vinsl, ASHLL, O_r, O_t_rp}, - {Vshll, O_r, O_t_lo}, - {Vins, AMOVL, O_t_hi, O_l_hi}, - {Vins, AMOVL, O_t_lo, O_l_lo}, - {Vend}, -}; - -/* shift asop dest left, const == 32 */ -static uchar asdshllc32[][VLEN] = -{ - {Vins, AMOVL, O_l_lo, O_t_hi}, - {Vzero, O_t_lo}, - {Vins, AMOVL, O_t_hi, O_l_hi}, - {Vins, AMOVL, O_t_lo, O_l_lo}, - {Vend}, -}; - -/* shift asop dest, const > 32 */ -static uchar asdshllchi[][VLEN] = -{ - {Vins, AMOVL, O_l_lo, O_t_hi}, - {Vzero, O_t_lo}, - {Vshll, O_r, O_t_hi}, - {Vins, AMOVL, O_t_lo, O_l_lo}, - {Vins, AMOVL, O_t_hi, O_l_hi}, - {Vend}, -}; - -static uchar (*asshlltab[])[VLEN] = -{ - asshllgen, - asshllclo, - asshllc32, - asshllchi, - asdshllgen, - asdshllclo, - asdshllc32, - asdshllchi, -}; - -/* shift asop right general case */ -static uchar asshrlgen[][VLEN] = -{ - {V_a0, V_a1}, - {Vop, OGE, O_r, C32}, - {V_s0, Vins, AMOVL, O_l_lo, O_r0}, - {Vins, AMOVL, O_l_hi, O_r1}, - {Vinsra, ASHRL, O_r, O_r0}, - {Vinsx, Bop0, O_r, O_r1}, - {Vins, AMOVL, O_r0, O_l_lo}, - {Vins, AMOVL, O_r1, O_l_hi, Vgo}, - {V_p0, V_s0}, - {Vins, AMOVL, O_l_hi, O_r0}, - {Vinsx, Bop0, O_r, O_r0}, - {V_T1, Vzero, O_l_hi}, - {Vins, AMOVL, O_r0, O_l_lo}, - {V_F1, Vins, ASARL, C31, O_r0}, - {V_F1, Vins, AMOVL, O_r0, O_l_hi}, - {V_p0, V_f0, V_f1, Vend}, -}; - -/* shift asop right, const < 32 */ -static uchar asshrlclo[][VLEN] = -{ - {V_a0, V_a1}, - {Vins, AMOVL, O_l_lo, O_r0}, - {Vins, AMOVL, O_l_hi, O_r1}, - {Vinsra, ASHRL, O_r, O_r0}, - {Vinsx, Bop0, O_r, O_r1}, - {Vins, AMOVL, O_r0, O_l_lo}, - {Vins, AMOVL, O_r1, O_l_hi}, - {V_f0, V_f1, Vend}, -}; - -/* shift asop right, const == 32 */ -static uchar asshrlc32[][VLEN] = -{ - {V_a0}, - {Vins, AMOVL, O_l_hi, O_r0}, - {V_T1, Vzero, O_l_hi}, - {Vins, AMOVL, O_r0, O_l_lo}, - {V_F1, Vins, ASARL, C31, O_r0}, - {V_F1, Vins, AMOVL, O_r0, O_l_hi}, - {V_f0, Vend}, -}; - -/* shift asop right, const > 32 */ -static uchar asshrlchi[][VLEN] = -{ - {V_a0}, - {Vins, AMOVL, O_l_hi, O_r0}, - {V_T1, Vzero, O_l_hi}, - {Vinsx, Bop0, O_r, O_r0}, - {Vins, AMOVL, O_r0, O_l_lo}, - {V_F1, Vins, ASARL, C31, O_r0}, - {V_F1, Vins, AMOVL, O_r0, O_l_hi}, - {V_f0, Vend}, -}; - -/* shift asop dest right general case */ -static uchar asdshrlgen[][VLEN] = -{ - {Vop, OGE, O_r, C32}, - {V_s0, Vins, AMOVL, O_l_lo, O_t_lo}, - {Vins, AMOVL, O_l_hi, O_t_hi}, - {Vinsr, ASHRL, O_r, O_t_rp}, - {Vinsx, Bop0, O_r, O_t_hi}, - {Vins, AMOVL, O_t_lo, O_l_lo}, - {Vins, AMOVL, O_t_hi, O_l_hi, Vgo}, - {V_p0, V_s0}, - {Vins, AMOVL, O_l_hi, O_t_lo}, - {V_T1, Vzero, O_t_hi}, - {Vinsx, Bop0, O_r, O_t_lo}, - {V_F1, Vins, AMOVL, O_t_lo, O_t_hi}, - {V_F1, Vins, ASARL, C31, O_t_hi}, - {Vins, AMOVL, O_t_hi, O_l_hi, V_p0}, - {Vend}, -}; - -/* shift asop dest right, const < 32 */ -static uchar asdshrlclo[][VLEN] = -{ - {Vins, AMOVL, O_l_lo, O_t_lo}, - {Vins, AMOVL, O_l_hi, O_t_hi}, - {Vinsr, ASHRL, O_r, O_t_rp}, - {Vinsx, Bop0, O_r, O_t_hi}, - {Vins, AMOVL, O_t_lo, O_l_lo}, - {Vins, AMOVL, O_t_hi, O_l_hi}, - {Vend}, -}; - -/* shift asop dest right, const == 32 */ -static uchar asdshrlc32[][VLEN] = -{ - {Vins, AMOVL, O_l_hi, O_t_lo}, - {V_T1, Vzero, O_t_hi}, - {V_F1, Vins, AMOVL, O_t_lo, O_t_hi}, - {V_F1, Vins, ASARL, C31, O_t_hi}, - {Vins, AMOVL, O_t_lo, O_l_lo}, - {Vins, AMOVL, O_t_hi, O_l_hi}, - {Vend}, -}; - -/* shift asop dest, const > 32 */ -static uchar asdshrlchi[][VLEN] = -{ - {Vins, AMOVL, O_l_hi, O_t_lo}, - {V_T1, Vzero, O_t_hi}, - {Vinsx, Bop0, O_r, O_t_lo}, - {V_T1, Vins, AMOVL, O_t_hi, O_l_hi}, - {V_T1, Vins, AMOVL, O_t_lo, O_l_lo}, - {V_F1, Vins, AMOVL, O_t_lo, O_t_hi}, - {V_F1, Vins, ASARL, C31, O_t_hi}, - {V_F1, Vins, AMOVL, O_t_lo, O_l_lo}, - {V_F1, Vins, AMOVL, O_t_hi, O_l_hi}, - {Vend}, -}; - -static uchar (*asshrltab[])[VLEN] = -{ - asshrlgen, - asshrlclo, - asshrlc32, - asshrlchi, - asdshrlgen, - asdshrlclo, - asdshrlc32, - asdshrlchi, -}; - -static uchar shrlargs[] = { ASHRL, 1 }; -static uchar sarlargs[] = { ASARL, 0 }; - -/* ++ -- */ -static uchar incdec[][VLEN] = -{ - {Vinsx, Bop0, C01, O_l_lo}, - {Vinsx, Bop1, C00, O_l_hi, Vend}, -}; - -/* ++ -- *p */ -static uchar incdecpre[][VLEN] = -{ - {Vins, AMOVL, O_l_lo, O_t_lo}, - {Vins, AMOVL, O_l_hi, O_t_hi}, - {Vinsx, Bop0, C01, O_t_lo}, - {Vinsx, Bop1, C00, O_t_hi}, - {Vins, AMOVL, O_t_lo, O_l_lo}, - {Vins, AMOVL, O_t_hi, O_l_hi, Vend}, -}; - -/* *p ++ -- */ -static uchar incdecpost[][VLEN] = -{ - {Vins, AMOVL, O_l_lo, O_t_lo}, - {Vins, AMOVL, O_l_hi, O_t_hi}, - {Vinsx, Bop0, C01, O_l_lo}, - {Vinsx, Bop1, C00, O_l_hi, Vend}, -}; - -/* binop rp, rp */ -static uchar binop00[][VLEN] = -{ - {Vinsx, Bop0, O_r_lo, O_l_lo}, - {Vinsx, Bop1, O_r_hi, O_l_hi, Vend}, - {Vend}, -}; - -/* binop rp, addr */ -static uchar binoptmp[][VLEN] = -{ - {V_a0, Vins, AMOVL, O_r_lo, O_r0}, - {Vinsx, Bop0, O_r0, O_l_lo}, - {Vins, AMOVL, O_r_hi, O_r0}, - {Vinsx, Bop1, O_r0, O_l_hi}, - {V_f0, Vend}, -}; - -/* binop t = *a op *b */ -static uchar binop11[][VLEN] = -{ - {Vins, AMOVL, O_l_lo, O_t_lo}, - {Vinsx, Bop0, O_r_lo, O_t_lo}, - {Vins, AMOVL, O_l_hi, O_t_hi}, - {Vinsx, Bop1, O_r_hi, O_t_hi, Vend}, -}; - -/* binop t = rp +- c */ -static uchar add0c[][VLEN] = -{ - {V_r_lo_t, Vinsx, Bop0, O_r_lo, O_l_lo}, - {V_r_lo_f, Vamv, Bop0, Bop1}, - {Vinsx, Bop1, O_r_hi, O_l_hi}, - {Vend}, -}; - -/* binop t = rp & c */ -static uchar and0c[][VLEN] = -{ - {V_r_lo_t, Vinsx, Bop0, O_r_lo, O_l_lo}, - {V_r_lo_f, Vins, AMOVL, C00, O_l_lo}, - {V_r_hi_t, Vinsx, Bop1, O_r_hi, O_l_hi}, - {V_r_hi_f, Vins, AMOVL, C00, O_l_hi}, - {Vend}, -}; - -/* binop t = rp | c */ -static uchar or0c[][VLEN] = -{ - {V_r_lo_t, Vinsx, Bop0, O_r_lo, O_l_lo}, - {V_r_hi_t, Vinsx, Bop1, O_r_hi, O_l_hi}, - {Vend}, -}; - -/* binop t = c - rp */ -static uchar sub10[][VLEN] = -{ - {V_a0, Vins, AMOVL, O_l_lo, O_r0}, - {Vinsx, Bop0, O_r_lo, O_r0}, - {Vins, AMOVL, O_l_hi, O_r_lo}, - {Vinsx, Bop1, O_r_hi, O_r_lo}, - {Vspazz, V_f0, Vend}, -}; - -/* binop t = c + *b */ -static uchar addca[][VLEN] = -{ - {Vins, AMOVL, O_r_lo, O_t_lo}, - {V_l_lo_t, Vinsx, Bop0, O_l_lo, O_t_lo}, - {V_l_lo_f, Vamv, Bop0, Bop1}, - {Vins, AMOVL, O_r_hi, O_t_hi}, - {Vinsx, Bop1, O_l_hi, O_t_hi}, - {Vend}, -}; - -/* binop t = c & *b */ -static uchar andca[][VLEN] = -{ - {V_l_lo_t, Vins, AMOVL, O_r_lo, O_t_lo}, - {V_l_lo_t, Vinsx, Bop0, O_l_lo, O_t_lo}, - {V_l_lo_f, Vzero, O_t_lo}, - {V_l_hi_t, Vins, AMOVL, O_r_hi, O_t_hi}, - {V_l_hi_t, Vinsx, Bop1, O_l_hi, O_t_hi}, - {V_l_hi_f, Vzero, O_t_hi}, - {Vend}, -}; - -/* binop t = c | *b */ -static uchar orca[][VLEN] = -{ - {Vins, AMOVL, O_r_lo, O_t_lo}, - {V_l_lo_t, Vinsx, Bop0, O_l_lo, O_t_lo}, - {Vins, AMOVL, O_r_hi, O_t_hi}, - {V_l_hi_t, Vinsx, Bop1, O_l_hi, O_t_hi}, - {Vend}, -}; - -/* binop t = c - *b */ -static uchar subca[][VLEN] = -{ - {Vins, AMOVL, O_l_lo, O_t_lo}, - {Vins, AMOVL, O_l_hi, O_t_hi}, - {Vinsx, Bop0, O_r_lo, O_t_lo}, - {Vinsx, Bop1, O_r_hi, O_t_hi}, - {Vend}, -}; - -/* binop t = *a +- c */ -static uchar addac[][VLEN] = -{ - {Vins, AMOVL, O_l_lo, O_t_lo}, - {V_r_lo_t, Vinsx, Bop0, O_r_lo, O_t_lo}, - {V_r_lo_f, Vamv, Bop0, Bop1}, - {Vins, AMOVL, O_l_hi, O_t_hi}, - {Vinsx, Bop1, O_r_hi, O_t_hi}, - {Vend}, -}; - -/* binop t = *a | c */ -static uchar orac[][VLEN] = -{ - {Vins, AMOVL, O_l_lo, O_t_lo}, - {V_r_lo_t, Vinsx, Bop0, O_r_lo, O_t_lo}, - {Vins, AMOVL, O_l_hi, O_t_hi}, - {V_r_hi_t, Vinsx, Bop1, O_r_hi, O_t_hi}, - {Vend}, -}; - -/* binop t = *a & c */ -static uchar andac[][VLEN] = -{ - {V_r_lo_t, Vins, AMOVL, O_l_lo, O_t_lo}, - {V_r_lo_t, Vinsx, Bop0, O_r_lo, O_t_lo}, - {V_r_lo_f, Vzero, O_t_lo}, - {V_r_hi_t, Vins, AMOVL, O_l_hi, O_t_hi}, - {V_r_hi_t, Vinsx, Bop0, O_r_hi, O_t_hi}, - {V_r_hi_f, Vzero, O_t_hi}, - {Vend}, -}; - -static uchar ADDargs[] = { AADDL, AADCL }; -static uchar ANDargs[] = { AANDL, AANDL }; -static uchar ORargs[] = { AORL, AORL }; -static uchar SUBargs[] = { ASUBL, ASBBL }; -static uchar XORargs[] = { AXORL, AXORL }; - -static uchar (*ADDtab[])[VLEN] = -{ - add0c, addca, addac, -}; - -static uchar (*ANDtab[])[VLEN] = -{ - and0c, andca, andac, -}; - -static uchar (*ORtab[])[VLEN] = -{ - or0c, orca, orac, -}; - -static uchar (*SUBtab[])[VLEN] = -{ - add0c, subca, addac, -}; - -/* mul of const32 */ -static uchar mulc32[][VLEN] = -{ - {V_a0, Vop, ONE, O_l_hi, C00}, - {V_s0, Vins, AMOVL, O_r_lo, O_r0}, - {Vins, AMULL, O_r0, O_Zop}, - {Vgo, V_p0, V_s0}, - {Vins, AMOVL, O_l_hi, O_r0}, - {Vmul, O_r_lo, O_r0}, - {Vins, AMOVL, O_r_lo, O_l_hi}, - {Vins, AMULL, O_l_hi, O_Zop}, - {Vins, AADDL, O_r0, O_l_hi}, - {V_f0, V_p0, Vend}, -}; - -/* mul of const64 */ -static uchar mulc64[][VLEN] = -{ - {V_a0, Vins, AMOVL, O_r_hi, O_r0}, - {Vop, OOR, O_l_hi, O_r0}, - {Vop, ONE, O_r0, C00}, - {V_s0, Vins, AMOVL, O_r_lo, O_r0}, - {Vins, AMULL, O_r0, O_Zop}, - {Vgo, V_p0, V_s0}, - {Vmul, O_r_lo, O_l_hi}, - {Vins, AMOVL, O_l_lo, O_r0}, - {Vmul, O_r_hi, O_r0}, - {Vins, AADDL, O_l_hi, O_r0}, - {Vins, AMOVL, O_r_lo, O_l_hi}, - {Vins, AMULL, O_l_hi, O_Zop}, - {Vins, AADDL, O_r0, O_l_hi}, - {V_f0, V_p0, Vend}, -}; - -/* mul general */ -static uchar mull[][VLEN] = -{ - {V_a0, Vins, AMOVL, O_r_hi, O_r0}, - {Vop, OOR, O_l_hi, O_r0}, - {Vop, ONE, O_r0, C00}, - {V_s0, Vins, AMOVL, O_r_lo, O_r0}, - {Vins, AMULL, O_r0, O_Zop}, - {Vgo, V_p0, V_s0}, - {Vins, AIMULL, O_r_lo, O_l_hi}, - {Vins, AMOVL, O_l_lo, O_r0}, - {Vins, AIMULL, O_r_hi, O_r0}, - {Vins, AADDL, O_l_hi, O_r0}, - {Vins, AMOVL, O_r_lo, O_l_hi}, - {Vins, AMULL, O_l_hi, O_Zop}, - {Vins, AADDL, O_r0, O_l_hi}, - {V_f0, V_p0, Vend}, -}; - -/* cast rp l to rp t */ -static uchar castrp[][VLEN] = -{ - {Vmv, O_l, O_t_lo}, - {VT, Vins, AMOVL, O_t_lo, O_t_hi}, - {VT, Vins, ASARL, C31, O_t_hi}, - {VF, Vzero, O_t_hi}, - {Vend}, -}; - -/* cast rp l to addr t */ -static uchar castrpa[][VLEN] = -{ - {VT, V_a0, Vmv, O_l, O_r0}, - {VT, Vins, AMOVL, O_r0, O_t_lo}, - {VT, Vins, ASARL, C31, O_r0}, - {VT, Vins, AMOVL, O_r0, O_t_hi}, - {VT, V_f0}, - {VF, Vmv, O_l, O_t_lo}, - {VF, Vzero, O_t_hi}, - {Vend}, -}; - -static uchar netab0i[][VLEN] = -{ - {Vop, ONE, O_l_lo, O_r_lo}, - {V_s0, Vop, ONE, O_l_hi, O_r_hi}, - {V_s1, Vgo, V_s2, Vgo, V_s3}, - {VF, V_p0, V_p1, VT, V_p2}, - {Vgo, V_p3}, - {VT, V_p0, V_p1, VF, V_p2}, - {Vend}, -}; - -static uchar netabii[][VLEN] = -{ - {V_a0, Vins, AMOVL, O_l_lo, O_r0}, - {Vop, ONE, O_r0, O_r_lo}, - {V_s0, Vins, AMOVL, O_l_hi, O_r0}, - {Vop, ONE, O_r0, O_r_hi}, - {V_s1, Vgo, V_s2, Vgo, V_s3}, - {VF, V_p0, V_p1, VT, V_p2}, - {Vgo, V_p3}, - {VT, V_p0, V_p1, VF, V_p2}, - {V_f0, Vend}, -}; - -static uchar cmptab0i[][VLEN] = -{ - {Vopx, Bop0, O_l_hi, O_r_hi}, - {V_s0, Vins0, AJNE}, - {V_s1, Vopx, Bop1, O_l_lo, O_r_lo}, - {V_s2, Vgo, V_s3, Vgo, V_s4}, - {VT, V_p1, V_p3}, - {VF, V_p0, V_p2}, - {Vgo, V_p4}, - {VT, V_p0, V_p2}, - {VF, V_p1, V_p3}, - {Vend}, -}; - -static uchar cmptabii[][VLEN] = -{ - {V_a0, Vins, AMOVL, O_l_hi, O_r0}, - {Vopx, Bop0, O_r0, O_r_hi}, - {V_s0, Vins0, AJNE}, - {V_s1, Vins, AMOVL, O_l_lo, O_r0}, - {Vopx, Bop1, O_r0, O_r_lo}, - {V_s2, Vgo, V_s3, Vgo, V_s4}, - {VT, V_p1, V_p3}, - {VF, V_p0, V_p2}, - {Vgo, V_p4}, - {VT, V_p0, V_p2}, - {VF, V_p1, V_p3}, - {V_f0, Vend}, -}; - -static uchar (*NEtab[])[VLEN] = -{ - netab0i, netabii, -}; - -static uchar (*cmptab[])[VLEN] = -{ - cmptab0i, cmptabii, -}; - -static uchar GEargs[] = { OGT, OHS }; -static uchar GTargs[] = { OGT, OHI }; -static uchar HIargs[] = { OHI, OHI }; -static uchar HSargs[] = { OHI, OHS }; - -/* Big Generator */ -static void -biggen(Node *l, Node *r, Node *t, int true, uchar code[][VLEN], uchar *a) -{ - int i, j, g, oc, op, lo, ro, to, xo, *xp; - Type *lt; - Prog *pr[VOPS]; - Node *ot, *tl, *tr, tmps[2]; - uchar *c, (*cp)[VLEN], args[VARGS]; - - if(a != nil) - memmove(args, a, VARGS); -//print("biggen %d %d %d\n", args[0], args[1], args[2]); -//if(l) prtree(l, "l"); -//if(r) prtree(r, "r"); -//if(t) prtree(t, "t"); - lo = ro = to = 0; - cp = code; - - for (;;) { - c = *cp++; - g = 1; - i = 0; -//print("code %d %d %d %d %d\n", c[0], c[1], c[2], c[3], c[4]); - for(;;) { - switch(op = c[i]) { - case Vgo: - if(g) - gbranch(OGOTO); - i++; - break; - - case Vamv: - i += 3; - if(i > VLEN) { - diag(l, "bad Vop"); - return; - } - if(g) - args[c[i - 1]] = args[c[i - 2]]; - break; - - case Vzero: - i += 2; - if(i > VLEN) { - diag(l, "bad Vop"); - return; - } - j = i - 1; - goto op; - - case Vspazz: // nasty hack to save a reg in SUB -//print("spazz\n"); - if(g) { -//print("hi %R lo %R t %R\n", r->right->reg, r->left->reg, tmps[0].reg); - ot = r->right; - r->right = r->left; - tl = new(0, Z, Z); - *tl = tmps[0]; - r->left = tl; - tmps[0] = *ot; -//print("hi %R lo %R t %R\n", r->right->reg, r->left->reg, tmps[0].reg); - } - i++; - break; - - case Vmv: - case Vmul: - case Vshll: - i += 3; - if(i > VLEN) { - diag(l, "bad Vop"); - return; - } - j = i - 2; - goto op; - - case Vins0: - i += 2; - if(i > VLEN) { - diag(l, "bad Vop"); - return; - } - gins(c[i - 1], Z, Z); - break; - - case Vop: - case Vopx: - case Vins: - case Vinsl: - case Vinsr: - case Vinsla: - case Vinsra: - case Vinsx: - i += 4; - if(i > VLEN) { - diag(l, "bad Vop"); - return; - } - j = i - 2; - goto op; - - op: - if(!g) - break; - tl = Z; - tr = Z; - for(; j < i; j++) { - switch(c[j]) { - case C00: - ot = nodconst(0); - break; - case C01: - ot = nodconst(1); - break; - case C31: - ot = nodconst(31); - break; - case C32: - ot = nodconst(32); - break; - - case O_l: - case O_l_lo: - ot = l; xp = &lo; xo = 0; - goto op0; - case O_l_hi: - ot = l; xp = &lo; xo = SZ_LONG; - goto op0; - case O_r: - case O_r_lo: - ot = r; xp = &ro; xo = 0; - goto op0; - case O_r_hi: - ot = r; xp = &ro; xo = SZ_LONG; - goto op0; - case O_t_lo: - ot = t; xp = &to; xo = 0; - goto op0; - case O_t_hi: - ot = t; xp = &to; xo = SZ_LONG; - goto op0; - case O_l_rp: - ot = l; - break; - case O_r_rp: - ot = r; - break; - case O_t_rp: - ot = t; - break; - case O_r0: - case O_r1: - ot = &tmps[c[j] - O_r0]; - break; - case O_Zop: - ot = Z; - break; - - op0: - switch(ot->op) { - case OCONST: - if(xo) - ot = hi64(ot); - else - ot = lo64(ot); - break; - case OREGPAIR: - if(xo) - ot = ot->right; - else - ot = ot->left; - break; - case OREGISTER: - break; - default: - if(xo != *xp) { - ot->xoffset += xo - *xp; - *xp = xo; - } - } - break; - - default: - diag(l, "bad V_lop"); - return; - } - if(tl == nil) - tl = ot; - else - tr = ot; - } - if(op == Vzero) { - zeroregm(tl); - break; - } - oc = c[i - 3]; - if(op == Vinsx || op == Vopx) { -//print("%d -> %d\n", oc, args[oc]); - oc = args[oc]; - } - else { - switch(oc) { - case O_a0: - case O_a1: - oc = args[oc - O_a0]; - break; - } - } - switch(op) { - case Vmul: - mulgen(tr->type, tl, tr); - break; - case Vmv: - gmove(tl, tr); - break; - case Vshll: - shiftit(tr->type, tl, tr); - break; - case Vop: - case Vopx: - gopcode(oc, types[TULONG], tl, tr); - break; - case Vins: - case Vinsx: - gins(oc, tl, tr); - break; - case Vinsl: - gins(oc, tl, tr->right); - p->from.index = tr->left->reg; - break; - case Vinsr: - gins(oc, tl, tr->left); - p->from.index = tr->right->reg; - break; - case Vinsla: - gins(oc, tl, tr + 1); - p->from.index = tr->reg; - break; - case Vinsra: - gins(oc, tl, tr); - p->from.index = (tr + 1)->reg; - break; - } - break; - - case VT: - g = true; - i++; - break; - case VF: - g = !true; - i++; - break; - - case V_T0: case V_T1: - g = args[op - V_T0]; - i++; - break; - - case V_F0: case V_F1: - g = !args[op - V_F0]; - i++; - break; - - case V_C0: case V_C1: - if(g) - args[op - V_C0] = 0; - i++; - break; - - case V_S0: case V_S1: - if(g) - args[op - V_S0] = 1; - i++; - break; - - case V_l_lo_f: - g = lo64v(l) == 0; - i++; - break; - case V_l_hi_f: - g = hi64v(l) == 0; - i++; - break; - case V_l_lo_t: - g = lo64v(l) != 0; - i++; - break; - case V_l_hi_t: - g = hi64v(l) != 0; - i++; - break; - case V_l_lo_u: - g = lo64v(l) >= 0; - i++; - break; - case V_l_hi_u: - g = hi64v(l) >= 0; - i++; - break; - case V_r_lo_f: - g = lo64v(r) == 0; - i++; - break; - case V_r_hi_f: - g = hi64v(r) == 0; - i++; - break; - case V_r_lo_t: - g = lo64v(r) != 0; - i++; - break; - case V_r_hi_t: - g = hi64v(r) != 0; - i++; - break; - case V_r_lo_u: - g = lo64v(r) >= 0; - i++; - break; - case V_r_hi_u: - g = hi64v(r) >= 0; - i++; - break; - - case Vend: - goto out; - - case V_a0: case V_a1: - if(g) { - lt = l->type; - l->type = types[TULONG]; - regalloc(&tmps[op - V_a0], l, Z); - l->type = lt; - } - i++; - break; - - case V_f0: case V_f1: - if(g) - regfree(&tmps[op - V_f0]); - i++; - break; - - case V_p0: case V_p1: case V_p2: case V_p3: case V_p4: - if(g) - patch(pr[op - V_p0], pc); - i++; - break; - - case V_s0: case V_s1: case V_s2: case V_s3: case V_s4: - if(g) - pr[op - V_s0] = p; - i++; - break; - - default: - diag(l, "bad biggen: %d", op); - return; - } - if(i == VLEN || c[i] == 0) - break; - } - } -out: - if(lo) - l->xoffset -= lo; - if(ro) - r->xoffset -= ro; - if(to) - t->xoffset -= to; -} - -int -cgen64(Node *n, Node *nn) -{ - Type *dt; - uchar *args, (*cp)[VLEN], (**optab)[VLEN]; - int li, ri, lri, dr, si, m, op, sh, cmp, true; - Node *c, *d, *l, *r, *t, *s, nod1, nod2, nod3, nod4, nod5; - - if(debug['g']) { - prtree(nn, "cgen64 lhs"); - prtree(n, "cgen64"); - print("AX = %d\n", reg[D_AX]); - } - cmp = 0; - sh = 0; - - switch(n->op) { - case ONEG: - d = regpair(nn, n); - sugen(n->left, d, 8); - gins(ANOTL, Z, d->right); - gins(ANEGL, Z, d->left); - gins(ASBBL, nodconst(-1), d->right); - break; - - case OCOM: - if(!vaddr(n->left, 0) || !vaddr(nn, 0)) - d = regpair(nn, n); - else - return 0; - sugen(n->left, d, 8); - gins(ANOTL, Z, d->left); - gins(ANOTL, Z, d->right); - break; - - case OADD: - optab = ADDtab; - args = ADDargs; - goto twoop; - case OAND: - optab = ANDtab; - args = ANDargs; - goto twoop; - case OOR: - optab = ORtab; - args = ORargs; - goto twoop; - case OSUB: - optab = SUBtab; - args = SUBargs; - goto twoop; - case OXOR: - optab = ORtab; - args = XORargs; - goto twoop; - case OASHL: - sh = 1; - args = nil; - optab = shlltab; - goto twoop; - case OLSHR: - sh = 1; - args = shrlargs; - optab = shrltab; - goto twoop; - case OASHR: - sh = 1; - args = sarlargs; - optab = shrltab; - goto twoop; - case OEQ: - cmp = 1; - args = nil; - optab = nil; - goto twoop; - case ONE: - cmp = 1; - args = nil; - optab = nil; - goto twoop; - case OLE: - cmp = 1; - args = nil; - optab = nil; - goto twoop; - case OLT: - cmp = 1; - args = nil; - optab = nil; - goto twoop; - case OGE: - cmp = 1; - args = nil; - optab = nil; - goto twoop; - case OGT: - cmp = 1; - args = nil; - optab = nil; - goto twoop; - case OHI: - cmp = 1; - args = nil; - optab = nil; - goto twoop; - case OHS: - cmp = 1; - args = nil; - optab = nil; - goto twoop; - case OLO: - cmp = 1; - args = nil; - optab = nil; - goto twoop; - case OLS: - cmp = 1; - args = nil; - optab = nil; - goto twoop; - -twoop: - dr = nn != Z && nn->op == OREGPAIR; - l = vfunc(n->left, nn); - if(sh) - r = n->right; - else - r = vfunc(n->right, nn); - - li = l->op == ONAME || l->op == OINDREG || l->op == OCONST; - ri = r->op == ONAME || r->op == OINDREG || r->op == OCONST; - -#define IMM(l, r) ((l) | ((r) << 1)) - - lri = IMM(li, ri); - - /* find out what is so easy about some operands */ - if(li) - li = whatof(l, sh | cmp); - if(ri) - ri = whatof(r, cmp); - - if(sh) - goto shift; - - if(cmp) - goto cmp; - - /* evaluate hard subexps, stealing nn if possible. */ - switch(lri) { - case IMM(0, 0): - bin00: - if(l->complex > r->complex) { - if(dr) - t = nn; - else - t = regpair(Z, n); - sugen(l, t, 8); - l = t; - t = regpair(Z, n); - sugen(r, t, 8); - r = t; - } - else { - t = regpair(Z, n); - sugen(r, t, 8); - r = t; - if(dr) - t = nn; - else - t = regpair(Z, n); - sugen(l, t, 8); - l = t; - } - break; - case IMM(0, 1): - if(dr) - t = nn; - else - t = regpair(Z, n); - sugen(l, t, 8); - l = t; - break; - case IMM(1, 0): - if(n->op == OSUB && l->op == OCONST && hi64v(l) == 0) { - lri = IMM(0, 0); - goto bin00; - } - if(dr) - t = nn; - else - t = regpair(Z, n); - sugen(r, t, 8); - r = t; - break; - case IMM(1, 1): - break; - } - -#define WW(l, r) ((l) | ((r) << 2)) - d = Z; - dt = nn->type; - nn->type = types[TLONG]; - - switch(lri) { - case IMM(0, 0): - biggen(l, r, Z, 0, binop00, args); - break; - case IMM(0, 1): - switch(ri) { - case WNONE: - diag(r, "bad whatof\n"); - break; - case WCONST: - biggen(l, r, Z, 0, optab[B0c], args); - break; - case WHARD: - reglcgen(&nod2, r, Z); - r = &nod2; - /* fall thru */ - case WADDR: - biggen(l, r, Z, 0, binoptmp, args); - if(ri == WHARD) - regfree(r); - break; - } - break; - case IMM(1, 0): - if(n->op == OSUB) { - switch(li) { - case WNONE: - diag(l, "bad whatof\n"); - break; - case WHARD: - reglcgen(&nod2, l, Z); - l = &nod2; - /* fall thru */ - case WADDR: - case WCONST: - biggen(l, r, Z, 0, sub10, args); - break; - } - if(li == WHARD) - regfree(l); - } - else { - switch(li) { - case WNONE: - diag(l, "bad whatof\n"); - break; - case WCONST: - biggen(r, l, Z, 0, optab[B0c], args); - break; - case WHARD: - reglcgen(&nod2, l, Z); - l = &nod2; - /* fall thru */ - case WADDR: - biggen(r, l, Z, 0, binoptmp, args); - if(li == WHARD) - regfree(l); - break; - } - } - break; - case IMM(1, 1): - switch(WW(li, ri)) { - case WW(WCONST, WHARD): - if(r->op == ONAME && n->op == OAND && reduxv(l)) - ri = WADDR; - break; - case WW(WHARD, WCONST): - if(l->op == ONAME && n->op == OAND && reduxv(r)) - li = WADDR; - break; - } - if(li == WHARD) { - reglcgen(&nod3, l, Z); - l = &nod3; - } - if(ri == WHARD) { - reglcgen(&nod2, r, Z); - r = &nod2; - } - d = regpair(nn, n); - instpair(d, Z); - switch(WW(li, ri)) { - case WW(WCONST, WADDR): - case WW(WCONST, WHARD): - biggen(l, r, d, 0, optab[Bca], args); - break; - - case WW(WADDR, WCONST): - case WW(WHARD, WCONST): - biggen(l, r, d, 0, optab[Bac], args); - break; - - case WW(WADDR, WADDR): - case WW(WADDR, WHARD): - case WW(WHARD, WADDR): - case WW(WHARD, WHARD): - biggen(l, r, d, 0, binop11, args); - break; - - default: - diag(r, "bad whatof pair %d %d\n", li, ri); - break; - } - if(li == WHARD) - regfree(l); - if(ri == WHARD) - regfree(r); - break; - } - - nn->type = dt; - - if(d != Z) - goto finished; - - switch(lri) { - case IMM(0, 0): - freepair(r); - /* fall thru */; - case IMM(0, 1): - if(!dr) - storepair(l, nn, 1); - break; - case IMM(1, 0): - if(!dr) - storepair(r, nn, 1); - break; - case IMM(1, 1): - break; - } - return 1; - - shift: - c = Z; - - /* evaluate hard subexps, stealing nn if possible. */ - /* must also secure CX. not as many optims as binop. */ - switch(lri) { - case IMM(0, 0): - imm00: - if(l->complex + 1 > r->complex) { - if(dr) - t = nn; - else - t = regpair(Z, l); - sugen(l, t, 8); - l = t; - t = &nod1; - c = snarfreg(l, t, D_CX, r, &nod2); - cgen(r, t); - r = t; - } - else { - t = &nod1; - c = snarfreg(nn, t, D_CX, r, &nod2); - cgen(r, t); - r = t; - if(dr) - t = nn; - else - t = regpair(Z, l); - sugen(l, t, 8); - l = t; - } - break; - case IMM(0, 1): - imm01: - if(ri != WCONST) { - lri = IMM(0, 0); - goto imm00; - } - if(dr) - t = nn; - else - t = regpair(Z, n); - sugen(l, t, 8); - l = t; - break; - case IMM(1, 0): - imm10: - if(li != WCONST) { - lri = IMM(0, 0); - goto imm00; - } - t = &nod1; - c = snarfreg(nn, t, D_CX, r, &nod2); - cgen(r, t); - r = t; - break; - case IMM(1, 1): - if(ri != WCONST) { - lri = IMM(1, 0); - goto imm10; - } - if(li == WHARD) { - lri = IMM(0, 1); - goto imm01; - } - break; - } - - d = Z; - - switch(lri) { - case IMM(0, 0): - biggen(l, r, Z, 0, optab[S00], args); - break; - case IMM(0, 1): - switch(ri) { - case WNONE: - case WADDR: - case WHARD: - diag(r, "bad whatof\n"); - break; - case WCONST: - m = r->vconst & 63; - s = nodconst(m); - if(m < 32) - cp = optab[Sc0]; - else if(m == 32) - cp = optab[Sc1]; - else - cp = optab[Sc2]; - biggen(l, s, Z, 0, cp, args); - break; - } - break; - case IMM(1, 0): - /* left is const */ - d = regpair(nn, n); - instpair(d, Z); - biggen(l, r, d, 0, optab[S10], args); - regfree(r); - break; - case IMM(1, 1): - d = regpair(nn, n); - instpair(d, Z); - switch(WW(li, ri)) { - case WW(WADDR, WCONST): - m = r->vconst & 63; - s = nodconst(m); - if(m < 32) { - loadpair(l, d); - l = d; - cp = optab[Sc0]; - } - else if(m == 32) - cp = optab[Sac3]; - else - cp = optab[Sac4]; - biggen(l, s, d, 0, cp, args); - break; - - default: - diag(r, "bad whatof pair %d %d\n", li, ri); - break; - } - break; - } - - if(c != Z) { - gins(AMOVL, c, r); - regfree(c); - } - - if(d != Z) - goto finished; - - switch(lri) { - case IMM(0, 0): - regfree(r); - /* fall thru */ - case IMM(0, 1): - if(!dr) - storepair(l, nn, 1); - break; - case IMM(1, 0): - regfree(r); - break; - case IMM(1, 1): - break; - } - return 1; - - cmp: - op = n->op; - /* evaluate hard subexps */ - switch(lri) { - case IMM(0, 0): - if(l->complex > r->complex) { - t = regpair(Z, l); - sugen(l, t, 8); - l = t; - t = regpair(Z, r); - sugen(r, t, 8); - r = t; - } - else { - t = regpair(Z, r); - sugen(r, t, 8); - r = t; - t = regpair(Z, l); - sugen(l, t, 8); - l = t; - } - break; - case IMM(1, 0): - t = r; - r = l; - l = t; - ri = li; - op = invrel[relindex(op)]; - /* fall thru */ - case IMM(0, 1): - t = regpair(Z, l); - sugen(l, t, 8); - l = t; - break; - case IMM(1, 1): - break; - } - - true = 1; - optab = cmptab; - switch(op) { - case OEQ: - optab = NEtab; - true = 0; - break; - case ONE: - optab = NEtab; - break; - case OLE: - args = GTargs; - true = 0; - break; - case OGT: - args = GTargs; - break; - case OLS: - args = HIargs; - true = 0; - break; - case OHI: - args = HIargs; - break; - case OLT: - args = GEargs; - true = 0; - break; - case OGE: - args = GEargs; - break; - case OLO: - args = HSargs; - true = 0; - break; - case OHS: - args = HSargs; - break; - default: - diag(n, "bad cmp\n"); - SET(optab); - } - - switch(lri) { - case IMM(0, 0): - biggen(l, r, Z, true, optab[T0i], args); - break; - case IMM(0, 1): - case IMM(1, 0): - switch(ri) { - case WNONE: - diag(l, "bad whatof\n"); - break; - case WCONST: - biggen(l, r, Z, true, optab[T0i], args); - break; - case WHARD: - reglcgen(&nod2, r, Z); - r = &nod2; - /* fall thru */ - case WADDR: - biggen(l, r, Z, true, optab[T0i], args); - if(ri == WHARD) - regfree(r); - break; - } - break; - case IMM(1, 1): - if(li == WHARD) { - reglcgen(&nod3, l, Z); - l = &nod3; - } - if(ri == WHARD) { - reglcgen(&nod2, r, Z); - r = &nod2; - } - biggen(l, r, Z, true, optab[Tii], args); - if(li == WHARD) - regfree(l); - if(ri == WHARD) - regfree(r); - break; - } - - switch(lri) { - case IMM(0, 0): - freepair(r); - /* fall thru */; - case IMM(0, 1): - case IMM(1, 0): - freepair(l); - break; - case IMM(1, 1): - break; - } - return 1; - - case OASMUL: - case OASLMUL: - m = 0; - goto mulop; - - case OMUL: - case OLMUL: - m = 1; - goto mulop; - - mulop: - dr = nn != Z && nn->op == OREGPAIR; - l = vfunc(n->left, nn); - r = vfunc(n->right, nn); - if(r->op != OCONST) { - if(l->complex > r->complex) { - if(m) { - t = l; - l = r; - r = t; - } - else if(!vaddr(l, 1)) { - reglcgen(&nod5, l, Z); - l = &nod5; - evacaxdx(l); - } - } - t = regpair(Z, n); - sugen(r, t, 8); - r = t; - evacaxdx(r->left); - evacaxdx(r->right); - if(l->complex <= r->complex && !m && !vaddr(l, 1)) { - reglcgen(&nod5, l, Z); - l = &nod5; - evacaxdx(l); - } - } - if(dr) - t = nn; - else - t = regpair(Z, n); - c = Z; - d = Z; - if(!nodreg(&nod1, t->left, D_AX)) { - if(t->left->reg != D_AX){ - t->left->reg = D_AX; - reg[D_AX]++; - }else if(reg[D_AX] == 0) - fatal(Z, "vlong mul AX botch"); - } - if(!nodreg(&nod2, t->right, D_DX)) { - if(t->right->reg != D_DX){ - t->right->reg = D_DX; - reg[D_DX]++; - }else if(reg[D_DX] == 0) - fatal(Z, "vlong mul DX botch"); - } - if(m) - sugen(l, t, 8); - else - loadpair(l, t); - if(t->left->reg != D_AX) { - c = &nod3; - regsalloc(c, t->left); - gmove(&nod1, c); - gmove(t->left, &nod1); - zapreg(t->left); - } - if(t->right->reg != D_DX) { - d = &nod4; - regsalloc(d, t->right); - gmove(&nod2, d); - gmove(t->right, &nod2); - zapreg(t->right); - } - if(c != Z || d != Z) { - s = regpair(Z, n); - s->left = &nod1; - s->right = &nod2; - } - else - s = t; - if(r->op == OCONST) { - if(hi64v(r) == 0) - biggen(s, r, Z, 0, mulc32, nil); - else - biggen(s, r, Z, 0, mulc64, nil); - } - else - biggen(s, r, Z, 0, mull, nil); - instpair(t, Z); - if(c != Z) { - gmove(&nod1, t->left); - gmove(&nod3, &nod1); - } - if(d != Z) { - gmove(&nod2, t->right); - gmove(&nod4, &nod2); - } - if(r->op == OREGPAIR) - freepair(r); - if(!m) - storepair(t, l, 0); - if(l == &nod5) - regfree(l); - if(!dr) { - if(nn != Z) - storepair(t, nn, 1); - else - freepair(t); - } - return 1; - - case OASADD: - args = ADDargs; - goto vasop; - case OASAND: - args = ANDargs; - goto vasop; - case OASOR: - args = ORargs; - goto vasop; - case OASSUB: - args = SUBargs; - goto vasop; - case OASXOR: - args = XORargs; - goto vasop; - - vasop: - l = n->left; - r = n->right; - dr = nn != Z && nn->op == OREGPAIR; - m = 0; - if(l->complex > r->complex) { - if(!vaddr(l, 1)) { - reglcgen(&nod1, l, Z); - l = &nod1; - } - if(!vaddr(r, 1) || nn != Z || r->op == OCONST) { - if(dr) - t = nn; - else - t = regpair(Z, r); - sugen(r, t, 8); - r = t; - m = 1; - } - } - else { - if(!vaddr(r, 1) || nn != Z || r->op == OCONST) { - if(dr) - t = nn; - else - t = regpair(Z, r); - sugen(r, t, 8); - r = t; - m = 1; - } - if(!vaddr(l, 1)) { - reglcgen(&nod1, l, Z); - l = &nod1; - } - } - if(nn != Z) { - if(n->op == OASSUB) - biggen(l, r, Z, 0, sub10, args); - else - biggen(r, l, Z, 0, binoptmp, args); - storepair(r, l, 0); - } - else { - if(m) - biggen(l, r, Z, 0, binop00, args); - else - biggen(l, r, Z, 0, binoptmp, args); - } - if(l == &nod1) - regfree(&nod1); - if(m) { - if(nn == Z) - freepair(r); - else if(!dr) - storepair(r, nn, 1); - } - return 1; - - case OASASHL: - args = nil; - optab = asshlltab; - goto assh; - case OASLSHR: - args = shrlargs; - optab = asshrltab; - goto assh; - case OASASHR: - args = sarlargs; - optab = asshrltab; - goto assh; - - assh: - c = Z; - l = n->left; - r = n->right; - if(r->op == OCONST) { - m = r->vconst & 63; - if(m < 32) - m = SAclo; - else if(m == 32) - m = SAc32; - else - m = SAchi; - } - else - m = SAgen; - if(l->complex > r->complex) { - if(!vaddr(l, 0)) { - reglcgen(&nod1, l, Z); - l = &nod1; - } - if(m == SAgen) { - t = &nod2; - if(l->reg == D_CX) { - regalloc(t, r, Z); - gmove(l, t); - l->reg = t->reg; - t->reg = D_CX; - } - else - c = snarfreg(nn, t, D_CX, r, &nod3); - cgen(r, t); - r = t; - } - } - else { - if(m == SAgen) { - t = &nod2; - c = snarfreg(nn, t, D_CX, r, &nod3); - cgen(r, t); - r = t; - } - if(!vaddr(l, 0)) { - reglcgen(&nod1, l, Z); - l = &nod1; - } - } - - if(nn != Z) { - m += SAdgen - SAgen; - d = regpair(nn, n); - instpair(d, Z); - biggen(l, r, d, 0, optab[m], args); - if(l == &nod1) { - regfree(&nod1); - l = Z; - } - if(r == &nod2 && c == Z) { - regfree(&nod2); - r = Z; - } - if(d != nn) - storepair(d, nn, 1); - } - else - biggen(l, r, Z, 0, optab[m], args); - - if(c != Z) { - gins(AMOVL, c, r); - regfree(c); - } - if(l == &nod1) - regfree(&nod1); - if(r == &nod2) - regfree(&nod2); - return 1; - - case OPOSTINC: - args = ADDargs; - cp = incdecpost; - goto vinc; - case OPOSTDEC: - args = SUBargs; - cp = incdecpost; - goto vinc; - case OPREINC: - args = ADDargs; - cp = incdecpre; - goto vinc; - case OPREDEC: - args = SUBargs; - cp = incdecpre; - goto vinc; - - vinc: - l = n->left; - if(!vaddr(l, 1)) { - reglcgen(&nod1, l, Z); - l = &nod1; - } - - if(nn != Z) { - d = regpair(nn, n); - instpair(d, Z); - biggen(l, Z, d, 0, cp, args); - if(l == &nod1) { - regfree(&nod1); - l = Z; - } - if(d != nn) - storepair(d, nn, 1); - } - else - biggen(l, Z, Z, 0, incdec, args); - - if(l == &nod1) - regfree(&nod1); - return 1; - - case OCAST: - l = n->left; - if(typev[l->type->etype]) { - if(!vaddr(l, 1)) { - if(l->complex + 1 > nn->complex) { - d = regpair(Z, l); - sugen(l, d, 8); - if(!vaddr(nn, 1)) { - reglcgen(&nod1, nn, Z); - r = &nod1; - } - else - r = nn; - } - else { - if(!vaddr(nn, 1)) { - reglcgen(&nod1, nn, Z); - r = &nod1; - } - else - r = nn; - d = regpair(Z, l); - sugen(l, d, 8); - } -// d->left->type = r->type; - d->left->type = types[TLONG]; - gmove(d->left, r); - freepair(d); - } - else { - if(nn->op != OREGISTER && !vaddr(nn, 1)) { - reglcgen(&nod1, nn, Z); - r = &nod1; - } - else - r = nn; -// l->type = r->type; - l->type = types[TLONG]; - gmove(l, r); - } - if(r != nn) - regfree(r); - } - else { - if(typeu[l->type->etype] || cond(l->op)) - si = TUNSIGNED; - else - si = TSIGNED; - regalloc(&nod1, l, Z); - cgen(l, &nod1); - if(nn->op == OREGPAIR) { - m = instpair(nn, &nod1); - biggen(&nod1, Z, nn, si == TSIGNED, castrp, nil); - } - else { - m = 0; - if(!vaddr(nn, si != TSIGNED)) { - dt = nn->type; - nn->type = types[TLONG]; - reglcgen(&nod2, nn, Z); - nn->type = dt; - nn = &nod2; - } - dt = nn->type; - nn->type = types[TLONG]; - biggen(&nod1, Z, nn, si == TSIGNED, castrpa, nil); - nn->type = dt; - if(nn == &nod2) - regfree(&nod2); - } - if(!m) - regfree(&nod1); - } - return 1; - - default: - if(n->op == OREGPAIR) { - storepair(n, nn, 1); - return 1; - } - if(nn->op == OREGPAIR) { - loadpair(n, nn); - return 1; - } - return 0; - } -finished: - if(d != nn) - storepair(d, nn, 1); - return 1; -} - -void -testv(Node *n, int true) -{ - Type *t; - Node *nn, nod; - - switch(n->op) { - case OINDREG: - case ONAME: - biggen(n, Z, Z, true, testi, nil); - break; - - default: - n = vfunc(n, n); - if(n->addable >= INDEXED) { - t = n->type; - n->type = types[TLONG]; - reglcgen(&nod, n, Z); - n->type = t; - n = &nod; - biggen(n, Z, Z, true, testi, nil); - if(n == &nod) - regfree(n); - } - else { - nn = regpair(Z, n); - sugen(n, nn, 8); - biggen(nn, Z, Z, true, testi, nil); - freepair(nn); - } - } -} diff --git a/src/cmd/8c/div.c b/src/cmd/8c/div.c deleted file mode 100644 index 14945052e..000000000 --- a/src/cmd/8c/div.c +++ /dev/null @@ -1,236 +0,0 @@ -// Inferno utils/8c/div.c -// http://code.google.com/p/inferno-os/source/browse/utils/8c/div.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -/* - * Based on: Granlund, T.; Montgomery, P.L. - * "Division by Invariant Integers using Multiplication". - * SIGPLAN Notices, Vol. 29, June 1994, page 61. - */ - -#define TN(n) ((uvlong)1 << (n)) -#define T31 TN(31) -#define T32 TN(32) - -int -multiplier(uint32 d, int p, uvlong *mp) -{ - int l; - uvlong mlo, mhi, tlo, thi; - - l = topbit(d - 1) + 1; - mlo = (((TN(l) - d) << 32) / d) + T32; - if(l + p == 64) - mhi = (((TN(l) + 1 - d) << 32) / d) + T32; - else - mhi = (TN(32 + l) + TN(32 + l - p)) / d; - /*assert(mlo < mhi);*/ - while(l > 0) { - tlo = mlo >> 1; - thi = mhi >> 1; - if(tlo == thi) - break; - mlo = tlo; - mhi = thi; - l--; - } - *mp = mhi; - return l; -} - -int -sdiv(uint32 d, uint32 *mp, int *sp) -{ - int s; - uvlong m; - - s = multiplier(d, 32 - 1, &m); - *mp = m; - *sp = s; - if(m >= T31) - return 1; - else - return 0; -} - -int -udiv(uint32 d, uint32 *mp, int *sp, int *pp) -{ - int p, s; - uvlong m; - - s = multiplier(d, 32, &m); - p = 0; - if(m >= T32) { - while((d & 1) == 0) { - d >>= 1; - p++; - } - s = multiplier(d, 32 - p, &m); - } - *mp = m; - *pp = p; - if(m >= T32) { - /*assert(p == 0);*/ - *sp = s - 1; - return 1; - } - else { - *sp = s; - return 0; - } -} - -void -sdivgen(Node *l, Node *r, Node *ax, Node *dx) -{ - int a, s; - uint32 m; - vlong c; - - c = r->vconst; - if(c < 0) - c = -c; - a = sdiv(c, &m, &s); -//print("a=%d i=%d s=%d m=%ux\n", a, (int32)r->vconst, s, m); - gins(AMOVL, nodconst(m), ax); - gins(AIMULL, l, Z); - gins(AMOVL, l, ax); - if(a) - gins(AADDL, ax, dx); - gins(ASHRL, nodconst(31), ax); - gins(ASARL, nodconst(s), dx); - gins(AADDL, ax, dx); - if(r->vconst < 0) - gins(ANEGL, Z, dx); -} - -void -udivgen(Node *l, Node *r, Node *ax, Node *dx) -{ - int a, s, t; - uint32 m; - Node nod; - - a = udiv(r->vconst, &m, &s, &t); -//print("a=%ud i=%d p=%d s=%d m=%ux\n", a, (int32)r->vconst, t, s, m); - if(t != 0) { - gins(AMOVL, l, ax); - gins(ASHRL, nodconst(t), ax); - gins(AMOVL, nodconst(m), dx); - gins(AMULL, dx, Z); - } - else if(a) { - if(l->op != OREGISTER) { - regalloc(&nod, l, Z); - gins(AMOVL, l, &nod); - l = &nod; - } - gins(AMOVL, nodconst(m), ax); - gins(AMULL, l, Z); - gins(AADDL, l, dx); - gins(ARCRL, nodconst(1), dx); - if(l == &nod) - regfree(l); - } - else { - gins(AMOVL, nodconst(m), ax); - gins(AMULL, l, Z); - } - if(s != 0) - gins(ASHRL, nodconst(s), dx); -} - -void -sext(Node *d, Node *s, Node *l) -{ - if(s->reg == D_AX && !nodreg(d, Z, D_DX)) { - reg[D_DX]++; - gins(ACDQ, Z, Z); - } - else { - regalloc(d, l, Z); - gins(AMOVL, s, d); - gins(ASARL, nodconst(31), d); - } -} - -void -sdiv2(int32 c, int v, Node *l, Node *n) -{ - Node nod; - - if(v > 0) { - if(v > 1) { - sext(&nod, n, l); - gins(AANDL, nodconst((1 << v) - 1), &nod); - gins(AADDL, &nod, n); - regfree(&nod); - } - else { - gins(ACMPL, n, nodconst(0x80000000)); - gins(ASBBL, nodconst(-1), n); - } - gins(ASARL, nodconst(v), n); - } - if(c < 0) - gins(ANEGL, Z, n); -} - -void -smod2(int32 c, int v, Node *l, Node *n) -{ - Node nod; - - if(c == 1) { - zeroregm(n); - return; - } - - sext(&nod, n, l); - if(v == 0) { - zeroregm(n); - gins(AXORL, &nod, n); - gins(ASUBL, &nod, n); - } - else if(v > 1) { - gins(AANDL, nodconst((1 << v) - 1), &nod); - gins(AADDL, &nod, n); - gins(AANDL, nodconst((1 << v) - 1), n); - gins(ASUBL, &nod, n); - } - else { - gins(AANDL, nodconst(1), n); - gins(AXORL, &nod, n); - gins(ASUBL, &nod, n); - } - regfree(&nod); -} diff --git a/src/cmd/8c/doc.go b/src/cmd/8c/doc.go deleted file mode 100644 index 0d07db14d..000000000 --- a/src/cmd/8c/doc.go +++ /dev/null @@ -1,16 +0,0 @@ -// Copyright 2009 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build ignore - -/* - -8c is a version of the Plan 9 C compiler. The original is documented at - - http://plan9.bell-labs.com/magic/man2html/1/8c - -Its target architecture is the x86, referred to by these tools for historical reasons as 386. - -*/ -package main diff --git a/src/cmd/8c/gc.h b/src/cmd/8c/gc.h deleted file mode 100644 index aa3888d73..000000000 --- a/src/cmd/8c/gc.h +++ /dev/null @@ -1,364 +0,0 @@ -// Inferno utils/8c/gc.h -// http://code.google.com/p/inferno-os/source/browse/utils/8c/gc.h -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <u.h> -#include "../cc/cc.h" -#include "../8l/8.out.h" - -/* - * 8c/386 - * Intel 386 - */ -#define SZ_CHAR 1 -#define SZ_SHORT 2 -#define SZ_INT 4 -#define SZ_LONG 4 -#define SZ_IND 4 -#define SZ_FLOAT 4 -#define SZ_VLONG 8 -#define SZ_DOUBLE 8 -#define FNX 100 - -typedef struct Case Case; -typedef struct C1 C1; -typedef struct Reg Reg; -typedef struct Rgn Rgn; -typedef struct Renv Renv; - -EXTERN struct -{ - Node* regtree; - Node* basetree; - short scale; - short reg; - short ptr; -} idx; - -#define A ((Addr*)0) - -#define INDEXED 9 - -#define P ((Prog*)0) - -struct Case -{ - Case* link; - int32 val; - int32 label; - char def; - char isv; -}; -#define C ((Case*)0) - -struct C1 -{ - int32 val; - int32 label; -}; - -struct Reg -{ - int32 pc; - int32 rpo; /* reverse post ordering */ - - Bits set; - Bits use1; - Bits use2; - - Bits refbehind; - Bits refahead; - Bits calbehind; - Bits calahead; - Bits regdiff; - Bits act; - - int32 regu; - int32 loop; /* could be shorter */ - - Reg* log5; - int32 active; - - Reg* p1; - Reg* p2; - Reg* p2link; - Reg* s1; - Reg* s2; - Reg* link; - Prog* prog; -}; -#define R ((Reg*)0) - -struct Renv -{ - int safe; - Node base; - Node* saved; - Node* scope; -}; - -#define NRGN 600 -struct Rgn -{ - Reg* enter; - short cost; - short varno; - short regno; -}; - -EXTERN int32 breakpc; -EXTERN int32 nbreak; -EXTERN Case* cases; -EXTERN Node constnode; -EXTERN Node fconstnode; -EXTERN int32 continpc; -EXTERN int32 curarg; -EXTERN int32 cursafe; -EXTERN Prog* lastp; -EXTERN int32 maxargsafe; -EXTERN int mnstring; -EXTERN Node* nodrat; -EXTERN Node* nodret; -EXTERN Node* nodsafe; -EXTERN int32 nrathole; -EXTERN int32 nstring; -EXTERN Prog* p; -EXTERN int32 pc; -EXTERN Node regnode; -EXTERN Node fregnode0; -EXTERN Node fregnode1; -EXTERN char string[NSNAME]; -EXTERN Sym* symrathole; -EXTERN Node znode; -EXTERN Prog zprog; -EXTERN int reg[D_NONE]; -EXTERN int32 exregoffset; -EXTERN int32 exfregoffset; - -#define BLOAD(r) band(bnot(r->refbehind), r->refahead) -#define BSTORE(r) band(bnot(r->calbehind), r->calahead) -#define LOAD(r) (~r->refbehind.b[z] & r->refahead.b[z]) -#define STORE(r) (~r->calbehind.b[z] & r->calahead.b[z]) - -#define bset(a,n) ((a).b[(n)/32]&(1L<<(n)%32)) - -#define CLOAD 5 -#define CREF 5 -#define CINF 1000 -#define LOOP 3 - -EXTERN Rgn region[NRGN]; -EXTERN Rgn* rgp; -EXTERN int nregion; -EXTERN int nvar; - -EXTERN Bits externs; -EXTERN Bits params; -EXTERN Bits consts; -EXTERN Bits addrs; - -EXTERN int32 regbits; -EXTERN int32 exregbits; - -EXTERN int change; -EXTERN int suppress; - -EXTERN Reg* firstr; -EXTERN Reg* lastr; -EXTERN Reg zreg; -EXTERN Reg* freer; -EXTERN int32* idom; -EXTERN Reg** rpo2r; -EXTERN int32 maxnr; - -extern char* anames[]; - -/* - * sgen.c - */ -void codgen(Node*, Node*); -void gen(Node*); -void noretval(int); -void usedset(Node*, int); -void xcom(Node*); -void indx(Node*); -int bcomplex(Node*, Node*); -Prog* gtext(Sym*, int32); -vlong argsize(int); - -/* - * cgen.c - */ -void zeroregm(Node*); -void cgen(Node*, Node*); -void reglcgen(Node*, Node*, Node*); -void lcgen(Node*, Node*); -void bcgen(Node*, int); -void boolgen(Node*, int, Node*); -void sugen(Node*, Node*, int32); -int needreg(Node*, int); - -/* - * cgen64.c - */ -int vaddr(Node*, int); -void loadpair(Node*, Node*); -int cgen64(Node*, Node*); -void testv(Node*, int); - -/* - * txt.c - */ -void ginit(void); -void gclean(void); -void nextpc(void); -void gargs(Node*, Node*, Node*); -void garg1(Node*, Node*, Node*, int, Node**); -Node* nodconst(int32); -Node* nodfconst(double); -int nodreg(Node*, Node*, int); -int isreg(Node*, int); -void regret(Node*, Node*, Type*, int); -void regalloc(Node*, Node*, Node*); -void regfree(Node*); -void regialloc(Node*, Node*, Node*); -void regsalloc(Node*, Node*); -void regaalloc1(Node*, Node*); -void regaalloc(Node*, Node*); -void regind(Node*, Node*); -void gprep(Node*, Node*); -void naddr(Node*, Addr*); -void gmove(Node*, Node*); -void gins(int a, Node*, Node*); -void fgopcode(int, Node*, Node*, int, int); -void gopcode(int, Type*, Node*, Node*); -int samaddr(Node*, Node*); -void gbranch(int); -void patch(Prog*, int32); -int sconst(Node*); -void gpseudo(int, Sym*, Node*); -void gprefetch(Node*); -void gpcdata(int, int); - -/* - * swt.c - */ -int swcmp(const void*, const void*); -void doswit(Node*); -void swit1(C1*, int, int32, Node*); -void swit2(C1*, int, int32, Node*); -void newcase(void); -void bitload(Node*, Node*, Node*, Node*, Node*); -void bitstore(Node*, Node*, Node*, Node*, Node*); -int32 outstring(char*, int32); -void nullwarn(Node*, Node*); -void sextern(Sym*, Node*, int32, int32); -void gextern(Sym*, Node*, int32, int32); -void outcode(void); - -/* - * list - */ -void listinit(void); - -/* - * reg.c - */ -Reg* rega(void); -int rcmp(const void*, const void*); -void regopt(Prog*); -void addmove(Reg*, int, int, int); -Bits mkvar(Reg*, Addr*); -void prop(Reg*, Bits, Bits); -void loopit(Reg*, int32); -void synch(Reg*, Bits); -uint32 allreg(uint32, Rgn*); -void paint1(Reg*, int); -uint32 paint2(Reg*, int); -void paint3(Reg*, int, int32, int); -void addreg(Addr*, int); - -/* - * peep.c - */ -void peep(void); -void excise(Reg*); -Reg* uniqp(Reg*); -Reg* uniqs(Reg*); -int regtyp(Addr*); -int anyvar(Addr*); -int subprop(Reg*); -int copyprop(Reg*); -int copy1(Addr*, Addr*, Reg*, int); -int copyu(Prog*, Addr*, Addr*); - -int copyas(Addr*, Addr*); -int copyau(Addr*, Addr*); -int copysub(Addr*, Addr*, Addr*, int); -int copysub1(Prog*, Addr*, Addr*, int); - -int32 RtoB(int); -int32 FtoB(int); -int BtoR(int32); -int BtoF(int32); - -#define D_HI D_NONE -#define D_LO D_NONE - -/* - * bound - */ -void comtarg(void); - -/* - * com64 - */ -int cond(int); -int com64(Node*); -void com64init(void); -void bool64(Node*); -int32 lo64v(Node*); -int32 hi64v(Node*); -Node* lo64(Node*); -Node* hi64(Node*); - -/* - * div/mul - */ -void sdivgen(Node*, Node*, Node*, Node*); -void udivgen(Node*, Node*, Node*, Node*); -void sdiv2(int32, int, Node*, Node*); -void smod2(int32, int, Node*, Node*); -void mulgen(Type*, Node*, Node*); -void genmuladd(Node*, Node*, int, Node*); -void shiftit(Type*, Node*, Node*); - -/* wrecklessly steal a field */ - -#define rplink label diff --git a/src/cmd/8c/list.c b/src/cmd/8c/list.c deleted file mode 100644 index 1730eccd0..000000000 --- a/src/cmd/8c/list.c +++ /dev/null @@ -1,38 +0,0 @@ -// Inferno utils/8c/list.c -// http://code.google.com/p/inferno-os/source/browse/utils/8c/list.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#define EXTERN -#include "gc.h" - -void -listinit(void) -{ - listinit8(); -} diff --git a/src/cmd/8c/machcap.c b/src/cmd/8c/machcap.c deleted file mode 100644 index 61e5aad16..000000000 --- a/src/cmd/8c/machcap.c +++ /dev/null @@ -1,116 +0,0 @@ -// Inferno utils/8c/machcap.c -// http://code.google.com/p/inferno-os/source/browse/utils/8c/machcap.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -int -machcap(Node *n) -{ - - if(n == Z) - return 1; /* test */ - - switch(n->op) { - case OMUL: - case OLMUL: - case OASMUL: - case OASLMUL: - if(typechl[n->type->etype]) - return 1; - if(typev[n->type->etype]) { - return 1; - } - break; - - case OCOM: - case ONEG: - case OADD: - case OAND: - case OOR: - case OSUB: - case OXOR: - case OASHL: - case OLSHR: - case OASHR: - if(typechlv[n->left->type->etype]) - return 1; - break; - - case OCAST: - if(typev[n->type->etype]) { - if(typechlp[n->left->type->etype]) - return 1; - } - else if(!typefd[n->type->etype]) { - if(typev[n->left->type->etype]) - return 1; - } - break; - - case OCOND: - case OCOMMA: - case OLIST: - case OANDAND: - case OOROR: - case ONOT: - return 1; - - case OASADD: - case OASSUB: - case OASAND: - case OASOR: - case OASXOR: - return 1; - - case OASASHL: - case OASASHR: - case OASLSHR: - return 1; - - case OPOSTINC: - case OPOSTDEC: - case OPREINC: - case OPREDEC: - return 1; - - case OEQ: - case ONE: - case OLE: - case OGT: - case OLT: - case OGE: - case OHI: - case OHS: - case OLO: - case OLS: - return 1; - } - return 0; -} diff --git a/src/cmd/8c/mul.c b/src/cmd/8c/mul.c deleted file mode 100644 index 9955e762f..000000000 --- a/src/cmd/8c/mul.c +++ /dev/null @@ -1,458 +0,0 @@ -// Inferno utils/8c/mul.c -// http://code.google.com/p/inferno-os/source/browse/utils/8c/mul.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -typedef struct Malg Malg; -typedef struct Mparam Mparam; - -struct Malg -{ - schar vals[10]; -}; - -struct Mparam -{ - uint32 value; - schar alg; - char neg; - char shift; - char arg; - schar off; -}; - -static Mparam multab[32]; -static int mulptr; - -static Malg malgs[] = -{ - {0, 100}, - {-1, 1, 100}, - {-9, -5, -3, 3, 5, 9, 100}, - {6, 10, 12, 18, 20, 24, 36, 40, 72, 100}, - {-8, -4, -2, 2, 4, 8, 100}, -}; - -/* - * return position of lowest 1 - */ -int -lowbit(uint32 v) -{ - int s, i; - uint32 m; - - s = 0; - m = 0xFFFFFFFFUL; - for(i = 16; i > 0; i >>= 1) { - m >>= i; - if((v & m) == 0) { - v >>= i; - s += i; - } - } - return s; -} - -void -genmuladd(Node *d, Node *s, int m, Node *a) -{ - Node nod; - - nod.op = OINDEX; - nod.left = a; - nod.right = s; - nod.scale = m; - nod.type = types[TIND]; - nod.xoffset = 0; - xcom(&nod); - gopcode(OADDR, d->type, &nod, d); -} - -void -mulparam(uint32 m, Mparam *mp) -{ - int c, i, j, n, o, q, s; - int bc, bi, bn, bo, bq, bs, bt; - schar *p; - int32 u; - uint32 t; - - bc = bq = 10; - bi = bn = bo = bs = bt = 0; - for(i = 0; i < nelem(malgs); i++) { - for(p = malgs[i].vals, j = 0; (o = p[j]) < 100; j++) - for(s = 0; s < 2; s++) { - c = 10; - q = 10; - u = m - o; - if(u == 0) - continue; - if(s) { - o = -o; - if(o > 0) - continue; - u = -u; - } - n = lowbit(u); - t = (uint32)u >> n; - switch(i) { - case 0: - if(t == 1) { - c = s + 1; - q = 0; - break; - } - switch(t) { - case 3: - case 5: - case 9: - c = s + 1; - if(n) - c++; - q = 0; - break; - } - if(s) - break; - switch(t) { - case 15: - case 25: - case 27: - case 45: - case 81: - c = 2; - if(n) - c++; - q = 1; - break; - } - break; - case 1: - if(t == 1) { - c = 3; - q = 3; - break; - } - switch(t) { - case 3: - case 5: - case 9: - c = 3; - q = 2; - break; - } - break; - case 2: - if(t == 1) { - c = 3; - q = 2; - break; - } - break; - case 3: - if(s) - break; - if(t == 1) { - c = 3; - q = 1; - break; - } - break; - case 4: - if(t == 1) { - c = 3; - q = 0; - break; - } - break; - } - if(c < bc || (c == bc && q > bq)) { - bc = c; - bi = i; - bn = n; - bo = o; - bq = q; - bs = s; - bt = t; - } - } - } - mp->value = m; - if(bc <= 3) { - mp->alg = bi; - mp->shift = bn; - mp->off = bo; - mp->neg = bs; - mp->arg = bt; - } - else - mp->alg = -1; -} - -int -m0(int a) -{ - switch(a) { - case -2: - case 2: - return 2; - case -3: - case 3: - return 2; - case -4: - case 4: - return 4; - case -5: - case 5: - return 4; - case 6: - return 2; - case -8: - case 8: - return 8; - case -9: - case 9: - return 8; - case 10: - return 4; - case 12: - return 2; - case 15: - return 2; - case 18: - return 8; - case 20: - return 4; - case 24: - return 2; - case 25: - return 4; - case 27: - return 2; - case 36: - return 8; - case 40: - return 4; - case 45: - return 4; - case 72: - return 8; - case 81: - return 8; - } - diag(Z, "bad m0"); - return 0; -} - -int -m1(int a) -{ - switch(a) { - case 15: - return 4; - case 25: - return 4; - case 27: - return 8; - case 45: - return 8; - case 81: - return 8; - } - diag(Z, "bad m1"); - return 0; -} - -int -m2(int a) -{ - switch(a) { - case 6: - return 2; - case 10: - return 2; - case 12: - return 4; - case 18: - return 2; - case 20: - return 4; - case 24: - return 8; - case 36: - return 4; - case 40: - return 8; - case 72: - return 8; - } - diag(Z, "bad m2"); - return 0; -} - -void -shiftit(Type *t, Node *s, Node *d) -{ - int32 c; - - c = (int32)s->vconst & 31; - switch(c) { - case 0: - break; - case 1: - gopcode(OADD, t, d, d); - break; - default: - gopcode(OASHL, t, s, d); - } -} - -static int -mulgen1(uint32 v, Node *n) -{ - int i, o; - Mparam *p; - Node nod, nods; - - for(i = 0; i < nelem(multab); i++) { - p = &multab[i]; - if(p->value == v) - goto found; - } - - p = &multab[mulptr]; - if(++mulptr == nelem(multab)) - mulptr = 0; - - mulparam(v, p); - -found: -// print("v=%.x a=%d n=%d s=%d g=%d o=%d \n", p->value, p->alg, p->neg, p->shift, p->arg, p->off); - if(p->alg < 0) - return 0; - - nods = *nodconst(p->shift); - - o = OADD; - if(p->alg > 0) { - regalloc(&nod, n, Z); - if(p->off < 0) - o = OSUB; - } - - switch(p->alg) { - case 0: - switch(p->arg) { - case 1: - shiftit(n->type, &nods, n); - break; - case 15: - case 25: - case 27: - case 45: - case 81: - genmuladd(n, n, m1(p->arg), n); - /* fall thru */ - case 3: - case 5: - case 9: - genmuladd(n, n, m0(p->arg), n); - shiftit(n->type, &nods, n); - break; - default: - goto bad; - } - if(p->neg == 1) - gins(ANEGL, Z, n); - break; - case 1: - switch(p->arg) { - case 1: - gmove(n, &nod); - shiftit(n->type, &nods, &nod); - break; - case 3: - case 5: - case 9: - genmuladd(&nod, n, m0(p->arg), n); - shiftit(n->type, &nods, &nod); - break; - default: - goto bad; - } - if(p->neg) - gopcode(o, n->type, &nod, n); - else { - gopcode(o, n->type, n, &nod); - gmove(&nod, n); - } - break; - case 2: - genmuladd(&nod, n, m0(p->off), n); - shiftit(n->type, &nods, n); - goto comop; - case 3: - genmuladd(&nod, n, m0(p->off), n); - shiftit(n->type, &nods, n); - genmuladd(n, &nod, m2(p->off), n); - break; - case 4: - genmuladd(&nod, n, m0(p->off), nodconst(0)); - shiftit(n->type, &nods, n); - goto comop; - default: - diag(Z, "bad mul alg"); - break; - comop: - if(p->neg) { - gopcode(o, n->type, n, &nod); - gmove(&nod, n); - } - else - gopcode(o, n->type, &nod, n); - } - - if(p->alg > 0) - regfree(&nod); - - return 1; - -bad: - diag(Z, "mulgen botch"); - return 1; -} - -void -mulgen(Type *t, Node *r, Node *n) -{ - if(!mulgen1(r->vconst, n)) - gopcode(OMUL, t, r, n); -} diff --git a/src/cmd/8c/peep.c b/src/cmd/8c/peep.c deleted file mode 100644 index 4f58fc05c..000000000 --- a/src/cmd/8c/peep.c +++ /dev/null @@ -1,807 +0,0 @@ -// Inferno utils/8c/peep.c -// http://code.google.com/p/inferno-os/source/browse/utils/8c/peep.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -static int -needc(Prog *p) -{ - while(p != P) { - switch(p->as) { - case AADCL: - case ASBBL: - case ARCRL: - return 1; - case AADDL: - case ASUBL: - case AJMP: - case ARET: - case ACALL: - return 0; - default: - if(p->to.type == D_BRANCH) - return 0; - } - p = p->link; - } - return 0; -} - -void -peep(void) -{ - Reg *r, *r1, *r2; - Prog *p, *p1; - int t; - - /* - * complete R structure - */ - t = 0; - for(r=firstr; r!=R; r=r1) { - r1 = r->link; - if(r1 == R) - break; - p = r->prog->link; - while(p != r1->prog) - switch(p->as) { - default: - r2 = rega(); - r->link = r2; - r2->link = r1; - - r2->prog = p; - r2->p1 = r; - r->s1 = r2; - r2->s1 = r1; - r1->p1 = r2; - - r = r2; - t++; - - case ADATA: - case AGLOBL: - case ANAME: - case ASIGNAME: - p = p->link; - } - } - - pc = 0; /* speculating it won't kill */ - -loop1: - - t = 0; - for(r=firstr; r!=R; r=r->link) { - p = r->prog; - switch(p->as) { - case AMOVL: - if(regtyp(&p->to)) - if(regtyp(&p->from)) { - if(copyprop(r)) { - excise(r); - t++; - } - if(subprop(r) && copyprop(r)) { - excise(r); - t++; - } - } - break; - - case AMOVBLSX: - case AMOVBLZX: - case AMOVWLSX: - case AMOVWLZX: - if(regtyp(&p->to)) { - r1 = uniqs(r); - if(r1 != R) { - p1 = r1->prog; - if(p->as == p1->as && p->to.type == p1->from.type) - p1->as = AMOVL; - } - } - break; - case AADDL: - case AADDW: - if(p->from.type != D_CONST || needc(p->link)) - break; - if(p->from.offset == -1){ - if(p->as == AADDL) - p->as = ADECL; - else - p->as = ADECW; - p->from = zprog.from; - } - else if(p->from.offset == 1){ - if(p->as == AADDL) - p->as = AINCL; - else - p->as = AINCW; - p->from = zprog.from; - } - break; - case ASUBL: - case ASUBW: - if(p->from.type != D_CONST || needc(p->link)) - break; - if(p->from.offset == -1) { - if(p->as == ASUBL) - p->as = AINCL; - else - p->as = AINCW; - p->from = zprog.from; - } - else if(p->from.offset == 1){ - if(p->as == ASUBL) - p->as = ADECL; - else - p->as = ADECW; - p->from = zprog.from; - } - break; - } - } - if(t) - goto loop1; -} - -void -excise(Reg *r) -{ - Prog *p; - - p = r->prog; - p->as = ANOP; - p->from = zprog.from; - p->to = zprog.to; -} - -Reg* -uniqp(Reg *r) -{ - Reg *r1; - - r1 = r->p1; - if(r1 == R) { - r1 = r->p2; - if(r1 == R || r1->p2link != R) - return R; - } else - if(r->p2 != R) - return R; - return r1; -} - -Reg* -uniqs(Reg *r) -{ - Reg *r1; - - r1 = r->s1; - if(r1 == R) { - r1 = r->s2; - if(r1 == R) - return R; - } else - if(r->s2 != R) - return R; - return r1; -} - -int -regtyp(Addr *a) -{ - int t; - - t = a->type; - if(t >= D_AX && t <= D_DI) - return 1; - return 0; -} - -/* - * the idea is to substitute - * one register for another - * from one MOV to another - * MOV a, R0 - * ADD b, R0 / no use of R1 - * MOV R0, R1 - * would be converted to - * MOV a, R1 - * ADD b, R1 - * MOV R1, R0 - * hopefully, then the former or latter MOV - * will be eliminated by copy propagation. - */ -int -subprop(Reg *r0) -{ - Prog *p; - Addr *v1, *v2; - Reg *r; - int t; - - p = r0->prog; - v1 = &p->from; - if(!regtyp(v1)) - return 0; - v2 = &p->to; - if(!regtyp(v2)) - return 0; - for(r=uniqp(r0); r!=R; r=uniqp(r)) { - if(uniqs(r) == R) - break; - p = r->prog; - switch(p->as) { - case ACALL: - return 0; - - case AIMULL: - case AIMULW: - if(p->to.type != D_NONE) - break; - - case ADIVB: - case ADIVL: - case ADIVW: - case AIDIVB: - case AIDIVL: - case AIDIVW: - case AIMULB: - case AMULB: - case AMULL: - case AMULW: - - case AROLB: - case AROLL: - case AROLW: - case ARORB: - case ARORL: - case ARORW: - case ASALB: - case ASALL: - case ASALW: - case ASARB: - case ASARL: - case ASARW: - case ASHLB: - case ASHLL: - case ASHLW: - case ASHRB: - case ASHRL: - case ASHRW: - - case AREP: - case AREPN: - - case ACWD: - case ACDQ: - - case ASTOSB: - case ASTOSL: - case AMOVSB: - case AMOVSL: - case AFSTSW: - return 0; - - case AMOVL: - if(p->to.type == v1->type) - goto gotit; - break; - } - if(copyau(&p->from, v2) || - copyau(&p->to, v2)) - break; - if(copysub(&p->from, v1, v2, 0) || - copysub(&p->to, v1, v2, 0)) - break; - } - return 0; - -gotit: - copysub(&p->to, v1, v2, 1); - if(debug['P']) { - print("gotit: %D->%D\n%P", v1, v2, r->prog); - if(p->from.type == v2->type) - print(" excise"); - print("\n"); - } - for(r=uniqs(r); r!=r0; r=uniqs(r)) { - p = r->prog; - copysub(&p->from, v1, v2, 1); - copysub(&p->to, v1, v2, 1); - if(debug['P']) - print("%P\n", r->prog); - } - t = v1->type; - v1->type = v2->type; - v2->type = t; - if(debug['P']) - print("%P last\n", r->prog); - return 1; -} - -/* - * The idea is to remove redundant copies. - * v1->v2 F=0 - * (use v2 s/v2/v1/)* - * set v1 F=1 - * use v2 return fail - * ----------------- - * v1->v2 F=0 - * (use v2 s/v2/v1/)* - * set v1 F=1 - * set v2 return success - */ -int -copyprop(Reg *r0) -{ - Prog *p; - Addr *v1, *v2; - Reg *r; - - p = r0->prog; - v1 = &p->from; - v2 = &p->to; - if(copyas(v1, v2)) - return 1; - for(r=firstr; r!=R; r=r->link) - r->active = 0; - return copy1(v1, v2, r0->s1, 0); -} - -int -copy1(Addr *v1, Addr *v2, Reg *r, int f) -{ - int t; - Prog *p; - - if(r->active) { - if(debug['P']) - print("act set; return 1\n"); - return 1; - } - r->active = 1; - if(debug['P']) - print("copy %D->%D f=%d\n", v1, v2, f); - for(; r != R; r = r->s1) { - p = r->prog; - if(debug['P']) - print("%P", p); - if(!f && uniqp(r) == R) { - f = 1; - if(debug['P']) - print("; merge; f=%d", f); - } - t = copyu(p, v2, A); - switch(t) { - case 2: /* rar, can't split */ - if(debug['P']) - print("; %D rar; return 0\n", v2); - return 0; - - case 3: /* set */ - if(debug['P']) - print("; %D set; return 1\n", v2); - return 1; - - case 1: /* used, substitute */ - case 4: /* use and set */ - if(f) { - if(!debug['P']) - return 0; - if(t == 4) - print("; %D used+set and f=%d; return 0\n", v2, f); - else - print("; %D used and f=%d; return 0\n", v2, f); - return 0; - } - if(copyu(p, v2, v1)) { - if(debug['P']) - print("; sub fail; return 0\n"); - return 0; - } - if(debug['P']) - print("; sub %D/%D", v2, v1); - if(t == 4) { - if(debug['P']) - print("; %D used+set; return 1\n", v2); - return 1; - } - break; - } - if(!f) { - t = copyu(p, v1, A); - if(!f && (t == 2 || t == 3 || t == 4)) { - f = 1; - if(debug['P']) - print("; %D set and !f; f=%d", v1, f); - } - } - if(debug['P']) - print("\n"); - if(r->s2) - if(!copy1(v1, v2, r->s2, f)) - return 0; - } - return 1; -} - -/* - * return - * 1 if v only used (and substitute), - * 2 if read-alter-rewrite - * 3 if set - * 4 if set and used - * 0 otherwise (not touched) - */ -int -copyu(Prog *p, Addr *v, Addr *s) -{ - - switch(p->as) { - - default: - if(debug['P']) - print("unknown op %A\n", p->as); - return 2; - - case ANEGB: - case ANEGW: - case ANEGL: - case ANOTB: - case ANOTW: - case ANOTL: - if(copyas(&p->to, v)) - return 2; - break; - - case ALEAL: /* lhs addr, rhs store */ - if(copyas(&p->from, v)) - return 2; - - - case ANOP: /* rhs store */ - case AMOVL: - case AMOVBLSX: - case AMOVBLZX: - case AMOVWLSX: - case AMOVWLZX: - if(copyas(&p->to, v)) { - if(s != A) - return copysub(&p->from, v, s, 1); - if(copyau(&p->from, v)) - return 4; - return 3; - } - goto caseread; - - case AROLB: - case AROLL: - case AROLW: - case ARORB: - case ARORL: - case ARORW: - case ASALB: - case ASALL: - case ASALW: - case ASARB: - case ASARL: - case ASARW: - case ASHLB: - case ASHLL: - case ASHLW: - case ASHRB: - case ASHRL: - case ASHRW: - if(copyas(&p->to, v)) - return 2; - if(copyas(&p->from, v)) - if(p->from.type == D_CX) - return 2; - goto caseread; - - case AADDB: /* rhs rar */ - case AADDL: - case AADDW: - case AANDB: - case AANDL: - case AANDW: - case ADECL: - case ADECW: - case AINCL: - case AINCW: - case ASUBB: - case ASUBL: - case ASUBW: - case AORB: - case AORL: - case AORW: - case AXORB: - case AXORL: - case AXORW: - case AMOVB: - case AMOVW: - - case AFMOVB: - case AFMOVBP: - case AFMOVD: - case AFMOVDP: - case AFMOVF: - case AFMOVFP: - case AFMOVL: - case AFMOVLP: - case AFMOVV: - case AFMOVVP: - case AFMOVW: - case AFMOVWP: - case AFMOVX: - case AFMOVXP: - case AFADDDP: - case AFADDW: - case AFADDL: - case AFADDF: - case AFADDD: - case AFMULDP: - case AFMULW: - case AFMULL: - case AFMULF: - case AFMULD: - case AFSUBDP: - case AFSUBW: - case AFSUBL: - case AFSUBF: - case AFSUBD: - case AFSUBRDP: - case AFSUBRW: - case AFSUBRL: - case AFSUBRF: - case AFSUBRD: - case AFDIVDP: - case AFDIVW: - case AFDIVL: - case AFDIVF: - case AFDIVD: - case AFDIVRDP: - case AFDIVRW: - case AFDIVRL: - case AFDIVRF: - case AFDIVRD: - if(copyas(&p->to, v)) - return 2; - goto caseread; - - case ACMPL: /* read only */ - case ACMPW: - case ACMPB: - - case APREFETCHT0: - case APREFETCHT1: - case APREFETCHT2: - case APREFETCHNTA: - - - case AFCOMB: - case AFCOMBP: - case AFCOMD: - case AFCOMDP: - case AFCOMDPP: - case AFCOMF: - case AFCOMFP: - case AFCOML: - case AFCOMLP: - case AFCOMW: - case AFCOMWP: - case AFUCOM: - case AFUCOMP: - case AFUCOMPP: - caseread: - if(s != A) { - if(copysub(&p->from, v, s, 1)) - return 1; - return copysub(&p->to, v, s, 1); - } - if(copyau(&p->from, v)) - return 1; - if(copyau(&p->to, v)) - return 1; - break; - - case AJGE: /* no reference */ - case AJNE: - case AJLE: - case AJEQ: - case AJHI: - case AJLS: - case AJMI: - case AJPL: - case AJGT: - case AJLT: - case AJCC: - case AJCS: - - case AADJSP: - case AFLDZ: - case AWAIT: - break; - - case AIMULL: - case AIMULW: - if(p->to.type != D_NONE) { - if(copyas(&p->to, v)) - return 2; - goto caseread; - } - - case ADIVB: - case ADIVL: - case ADIVW: - case AIDIVB: - case AIDIVL: - case AIDIVW: - case AIMULB: - case AMULB: - case AMULL: - case AMULW: - - case ACWD: - case ACDQ: - if(v->type == D_AX || v->type == D_DX) - return 2; - goto caseread; - - case AREP: - case AREPN: - if(v->type == D_CX) - return 2; - goto caseread; - - case AMOVSB: - case AMOVSL: - if(v->type == D_DI || v->type == D_SI) - return 2; - goto caseread; - - case ASTOSB: - case ASTOSL: - if(v->type == D_AX || v->type == D_DI) - return 2; - goto caseread; - - case AFSTSW: - if(v->type == D_AX) - return 2; - goto caseread; - - case AJMP: /* funny */ - if(s != A) { - if(copysub(&p->to, v, s, 1)) - return 1; - return 0; - } - if(copyau(&p->to, v)) - return 1; - return 0; - - case ARET: /* funny */ - if(v->type == REGRET) - return 2; - if(s != A) - return 1; - return 3; - - case ACALL: /* funny */ - if(REGARG >= 0 && v->type == (uchar)REGARG) - return 2; - - if(s != A) { - if(copysub(&p->to, v, s, 1)) - return 1; - return 0; - } - if(copyau(&p->to, v)) - return 4; - return 3; - } - return 0; -} - -/* - * direct reference, - * could be set/use depending on - * semantics - */ -int -copyas(Addr *a, Addr *v) -{ - if(a->type != v->type) - return 0; - if(regtyp(v)) - return 1; - if(v->type == D_AUTO || v->type == D_PARAM) - if(v->offset == a->offset) - return 1; - return 0; -} - -/* - * either direct or indirect - */ -int -copyau(Addr *a, Addr *v) -{ - - if(copyas(a, v)) - return 1; - if(regtyp(v)) { - if(a->type-D_INDIR == v->type) - return 1; - if(a->index == v->type) - return 1; - } - return 0; -} - -/* - * substitute s for v in a - * return failure to substitute - */ -int -copysub(Addr *a, Addr *v, Addr *s, int f) -{ - int t; - - if(copyas(a, v)) { - t = s->type; - if(t >= D_AX && t <= D_DI) { - if(f) - a->type = t; - } - return 0; - } - if(regtyp(v)) { - t = v->type; - if(a->type == t+D_INDIR) { - if(s->type == D_BP && a->index != D_NONE) - return 1; /* can't use BP-base with index */ - if(f) - a->type = s->type+D_INDIR; -// return 0; - } - if(a->index == t) { - if(f) - a->index = s->type; - return 0; - } - return 0; - } - return 0; -} diff --git a/src/cmd/8c/reg.c b/src/cmd/8c/reg.c deleted file mode 100644 index ea862f388..000000000 --- a/src/cmd/8c/reg.c +++ /dev/null @@ -1,1438 +0,0 @@ -// Inferno utils/8c/reg.c -// http://code.google.com/p/inferno-os/source/browse/utils/8c/reg.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -static void fixjmp(Reg*); - -Reg* -rega(void) -{ - Reg *r; - - r = freer; - if(r == R) { - r = alloc(sizeof(*r)); - } else - freer = r->link; - - *r = zreg; - return r; -} - -int -rcmp(const void *a1, const void *a2) -{ - Rgn *p1, *p2; - int c1, c2; - - p1 = (Rgn*)a1; - p2 = (Rgn*)a2; - c1 = p2->cost; - c2 = p1->cost; - if(c1 -= c2) - return c1; - return p2->varno - p1->varno; -} - -void -regopt(Prog *p) -{ - Reg *r, *r1, *r2; - Prog *p1; - int i, z; - int32 initpc, val, npc; - uint32 vreg; - Bits bit; - struct - { - int32 m; - int32 c; - Reg* p; - } log5[6], *lp; - - firstr = R; - lastr = R; - nvar = 0; - regbits = RtoB(D_SP) | RtoB(D_AX); - for(z=0; z<BITS; z++) { - externs.b[z] = 0; - params.b[z] = 0; - consts.b[z] = 0; - addrs.b[z] = 0; - } - - /* - * pass 1 - * build aux data structure - * allocate pcs - * find use and set of variables - */ - val = 5L * 5L * 5L * 5L * 5L; - lp = log5; - for(i=0; i<5; i++) { - lp->m = val; - lp->c = 0; - lp->p = R; - val /= 5L; - lp++; - } - val = 0; - for(; p != P; p = p->link) { - switch(p->as) { - case ADATA: - case AGLOBL: - case ANAME: - case ASIGNAME: - case AFUNCDATA: - continue; - } - r = rega(); - if(firstr == R) { - firstr = r; - lastr = r; - } else { - lastr->link = r; - r->p1 = lastr; - lastr->s1 = r; - lastr = r; - } - r->prog = p; - r->pc = val; - val++; - - lp = log5; - for(i=0; i<5; i++) { - lp->c--; - if(lp->c <= 0) { - lp->c = lp->m; - if(lp->p != R) - lp->p->log5 = r; - lp->p = r; - (lp+1)->c = 0; - break; - } - lp++; - } - - r1 = r->p1; - if(r1 != R) - switch(r1->prog->as) { - case ARET: - case AJMP: - case AIRETL: - r->p1 = R; - r1->s1 = R; - } - bit = mkvar(r, &p->from); - if(bany(&bit)) - switch(p->as) { - /* - * funny - */ - case ALEAL: - for(z=0; z<BITS; z++) - addrs.b[z] |= bit.b[z]; - break; - - /* - * left side read - */ - default: - for(z=0; z<BITS; z++) - r->use1.b[z] |= bit.b[z]; - break; - } - - bit = mkvar(r, &p->to); - if(bany(&bit)) - switch(p->as) { - default: - diag(Z, "reg: unknown op: %A", p->as); - break; - - /* - * right side read - */ - case ACMPB: - case ACMPL: - case ACMPW: - case APREFETCHT0: - case APREFETCHT1: - case APREFETCHT2: - case APREFETCHNTA: - for(z=0; z<BITS; z++) - r->use2.b[z] |= bit.b[z]; - break; - - /* - * right side write - */ - case ANOP: - case AMOVL: - case AMOVB: - case AMOVW: - case AMOVBLSX: - case AMOVBLZX: - case AMOVWLSX: - case AMOVWLZX: - for(z=0; z<BITS; z++) - r->set.b[z] |= bit.b[z]; - break; - - /* - * right side read+write - */ - case AADDB: - case AADDL: - case AADDW: - case AANDB: - case AANDL: - case AANDW: - case ASUBB: - case ASUBL: - case ASUBW: - case AORB: - case AORL: - case AORW: - case AXORB: - case AXORL: - case AXORW: - case ASALB: - case ASALL: - case ASALW: - case ASARB: - case ASARL: - case ASARW: - case AROLB: - case AROLL: - case AROLW: - case ARORB: - case ARORL: - case ARORW: - case ASHLB: - case ASHLL: - case ASHLW: - case ASHRB: - case ASHRL: - case ASHRW: - case AIMULL: - case AIMULW: - case ANEGL: - case ANOTL: - case AADCL: - case ASBBL: - for(z=0; z<BITS; z++) { - r->set.b[z] |= bit.b[z]; - r->use2.b[z] |= bit.b[z]; - } - break; - - /* - * funny - */ - case AFMOVDP: - case AFMOVFP: - case AFMOVLP: - case AFMOVVP: - case AFMOVWP: - case ACALL: - for(z=0; z<BITS; z++) - addrs.b[z] |= bit.b[z]; - break; - } - - switch(p->as) { - case AIMULL: - case AIMULW: - if(p->to.type != D_NONE) - break; - - case AIDIVB: - case AIDIVL: - case AIDIVW: - case AIMULB: - case ADIVB: - case ADIVL: - case ADIVW: - case AMULB: - case AMULL: - case AMULW: - - case ACWD: - case ACDQ: - r->regu |= RtoB(D_AX) | RtoB(D_DX); - break; - - case AREP: - case AREPN: - case ALOOP: - case ALOOPEQ: - case ALOOPNE: - r->regu |= RtoB(D_CX); - break; - - case AMOVSB: - case AMOVSL: - case AMOVSW: - case ACMPSB: - case ACMPSL: - case ACMPSW: - r->regu |= RtoB(D_SI) | RtoB(D_DI); - break; - - case ASTOSB: - case ASTOSL: - case ASTOSW: - case ASCASB: - case ASCASL: - case ASCASW: - r->regu |= RtoB(D_AX) | RtoB(D_DI); - break; - - case AINSB: - case AINSL: - case AINSW: - case AOUTSB: - case AOUTSL: - case AOUTSW: - r->regu |= RtoB(D_DI) | RtoB(D_DX); - break; - - case AFSTSW: - case ASAHF: - r->regu |= RtoB(D_AX); - break; - } - } - if(firstr == R) - return; - initpc = pc - val; - npc = val; - - /* - * pass 2 - * turn branch references to pointers - * build back pointers - */ - for(r = firstr; r != R; r = r->link) { - p = r->prog; - if(p->to.type == D_BRANCH) { - val = p->to.offset - initpc; - r1 = firstr; - while(r1 != R) { - r2 = r1->log5; - if(r2 != R && val >= r2->pc) { - r1 = r2; - continue; - } - if(r1->pc == val) - break; - r1 = r1->link; - } - if(r1 == R) { - nearln = p->lineno; - diag(Z, "ref not found\n%P", p); - continue; - } - if(r1 == r) { - nearln = p->lineno; - diag(Z, "ref to self\n%P", p); - continue; - } - r->s2 = r1; - r->p2link = r1->p2; - r1->p2 = r; - } - } - if(debug['R']) { - p = firstr->prog; - print("\n%L %D\n", p->lineno, &p->from); - } - - /* - * pass 2.1 - * fix jumps - */ - fixjmp(firstr); - - /* - * pass 2.5 - * find looping structure - */ - for(r = firstr; r != R; r = r->link) - r->active = 0; - change = 0; - loopit(firstr, npc); - if(debug['R'] && debug['v']) { - print("\nlooping structure:\n"); - for(r = firstr; r != R; r = r->link) { - print("%d:%P", r->loop, r->prog); - for(z=0; z<BITS; z++) - bit.b[z] = r->use1.b[z] | - r->use2.b[z] | - r->set.b[z]; - if(bany(&bit)) { - print("\t"); - if(bany(&r->use1)) - print(" u1=%B", r->use1); - if(bany(&r->use2)) - print(" u2=%B", r->use2); - if(bany(&r->set)) - print(" st=%B", r->set); - } - print("\n"); - } - } - - /* - * pass 3 - * iterate propagating usage - * back until flow graph is complete - */ -loop1: - change = 0; - for(r = firstr; r != R; r = r->link) - r->active = 0; - for(r = firstr; r != R; r = r->link) - if(r->prog->as == ARET) - prop(r, zbits, zbits); -loop11: - /* pick up unreachable code */ - i = 0; - for(r = firstr; r != R; r = r1) { - r1 = r->link; - if(r1 && r1->active && !r->active) { - prop(r, zbits, zbits); - i = 1; - } - } - if(i) - goto loop11; - if(change) - goto loop1; - - - /* - * pass 4 - * iterate propagating register/variable synchrony - * forward until graph is complete - */ -loop2: - change = 0; - for(r = firstr; r != R; r = r->link) - r->active = 0; - synch(firstr, zbits); - if(change) - goto loop2; - - - /* - * pass 5 - * isolate regions - * calculate costs (paint1) - */ - r = firstr; - if(r) { - for(z=0; z<BITS; z++) - bit.b[z] = (r->refahead.b[z] | r->calahead.b[z]) & - ~(externs.b[z] | params.b[z] | addrs.b[z] | consts.b[z]); - if(bany(&bit)) { - nearln = r->prog->lineno; - warn(Z, "used and not set: %B", bit); - if(debug['R'] && !debug['w']) - print("used and not set: %B\n", bit); - } - } - if(debug['R'] && debug['v']) - print("\nprop structure:\n"); - for(r = firstr; r != R; r = r->link) - r->act = zbits; - rgp = region; - nregion = 0; - for(r = firstr; r != R; r = r->link) { - if(debug['R'] && debug['v']) { - print("%P\t", r->prog); - if(bany(&r->set)) - print("s:%B ", r->set); - if(bany(&r->refahead)) - print("ra:%B ", r->refahead); - if(bany(&r->calahead)) - print("ca:%B ", r->calahead); - print("\n"); - } - for(z=0; z<BITS; z++) - bit.b[z] = r->set.b[z] & - ~(r->refahead.b[z] | r->calahead.b[z] | addrs.b[z]); - if(bany(&bit)) { - nearln = r->prog->lineno; - warn(Z, "set and not used: %B", bit); - if(debug['R']) - print("set and not used: %B\n", bit); - excise(r); - } - for(z=0; z<BITS; z++) - bit.b[z] = LOAD(r) & ~(r->act.b[z] | addrs.b[z]); - while(bany(&bit)) { - i = bnum(bit); - rgp->enter = r; - rgp->varno = i; - change = 0; - if(debug['R'] && debug['v']) - print("\n"); - paint1(r, i); - bit.b[i/32] &= ~(1L<<(i%32)); - if(change <= 0) { - if(debug['R']) - print("%L$%d: %B\n", - r->prog->lineno, change, blsh(i)); - continue; - } - rgp->cost = change; - nregion++; - if(nregion >= NRGN) { - fatal(Z, "too many regions"); - goto brk; - } - rgp++; - } - } -brk: - qsort(region, nregion, sizeof(region[0]), rcmp); - - /* - * pass 6 - * determine used registers (paint2) - * replace code (paint3) - */ - rgp = region; - for(i=0; i<nregion; i++) { - bit = blsh(rgp->varno); - vreg = paint2(rgp->enter, rgp->varno); - vreg = allreg(vreg, rgp); - if(debug['R']) { - print("%L$%d %R: %B\n", - rgp->enter->prog->lineno, - rgp->cost, - rgp->regno, - bit); - } - if(rgp->regno != 0) - paint3(rgp->enter, rgp->varno, vreg, rgp->regno); - rgp++; - } - /* - * pass 7 - * peep-hole on basic block - */ - if(!debug['R'] || debug['P']) - peep(); - - if(debug['R'] && debug['v']) { - print("after pass 7 (peep)\n"); - for(r=firstr; r; r=r->link) - print("%04d %P\n", (int)r->pc, r->prog); - print("\n"); - } - - /* - * pass 8 - * recalculate pc - */ - val = initpc; - for(r = firstr; r != R; r = r1) { - r->pc = val; - p = r->prog; - p1 = P; - r1 = r->link; - if(r1 != R) - p1 = r1->prog; - for(; p != p1; p = p->link) { - switch(p->as) { - default: - val++; - break; - - case ANOP: - case ADATA: - case AGLOBL: - case ANAME: - case ASIGNAME: - case AFUNCDATA: - break; - } - } - } - pc = val; - - /* - * fix up branches - */ - if(debug['R']) - if(bany(&addrs)) - print("addrs: %B\n", addrs); - - r1 = 0; /* set */ - for(r = firstr; r != R; r = r->link) { - p = r->prog; - if(p->to.type == D_BRANCH) { - p->to.offset = r->s2->pc; - p->to.u.branch = r->s2->prog; - } - r1 = r; - } - - /* - * last pass - * eliminate nops - * free aux structures - */ - for(p = firstr->prog; p != P; p = p->link){ - while(p->link && p->link->as == ANOP) - p->link = p->link->link; - } - - if(debug['R'] && debug['v']) { - print("after pass 8 (fixup pc)\n"); - for(p1=firstr->prog; p1!=P; p1=p1->link) - print("%P\n", p1); - print("\n"); - } - - if(r1 != R) { - r1->link = freer; - freer = firstr; - } -} - -/* - * add mov b,rn - * just after r - */ -void -addmove(Reg *r, int bn, int rn, int f) -{ - Prog *p, *p1; - Addr *a; - Var *v; - - p1 = alloc(sizeof(*p1)); - *p1 = zprog; - p = r->prog; - - p1->link = p->link; - p->link = p1; - p1->lineno = p->lineno; - - v = var + bn; - - a = &p1->to; - a->sym = v->sym; - a->offset = v->offset; - a->etype = v->etype; - a->type = v->name; - - p1->as = AMOVL; - if(v->etype == TCHAR || v->etype == TUCHAR) - p1->as = AMOVB; - if(v->etype == TSHORT || v->etype == TUSHORT) - p1->as = AMOVW; - - p1->from.type = rn; - if(!f) { - p1->from = *a; - *a = zprog.from; - a->type = rn; - if(v->etype == TUCHAR) - p1->as = AMOVB; - if(v->etype == TUSHORT) - p1->as = AMOVW; - } - if(debug['R']) - print("%P\t.a%P\n", p, p1); -} - -uint32 -doregbits(int r) -{ - uint32 b; - - b = 0; - if(r >= D_INDIR) - r -= D_INDIR; - if(r >= D_AX && r <= D_DI) - b |= RtoB(r); - else - if(r >= D_AL && r <= D_BL) - b |= RtoB(r-D_AL+D_AX); - else - if(r >= D_AH && r <= D_BH) - b |= RtoB(r-D_AH+D_AX); - return b; -} - -Bits -mkvar(Reg *r, Addr *a) -{ - Var *v; - int i, t, n, et, z; - int32 o; - Bits bit; - LSym *s; - - /* - * mark registers used - */ - t = a->type; - r->regu |= doregbits(t); - r->regu |= doregbits(a->index); - - switch(t) { - default: - goto none; - case D_ADDR: - a->type = a->index; - bit = mkvar(r, a); - for(z=0; z<BITS; z++) - addrs.b[z] |= bit.b[z]; - a->type = t; - goto none; - case D_EXTERN: - case D_STATIC: - case D_PARAM: - case D_AUTO: - n = t; - break; - } - s = a->sym; - if(s == nil) - goto none; - if(s->name[0] == '.') - goto none; - et = a->etype; - o = a->offset; - v = var; - for(i=0; i<nvar; i++) { - if(s == v->sym) - if(n == v->name) - if(o == v->offset) - goto out; - v++; - } - if(nvar >= NVAR) - fatal(Z, "variable not optimized: %s", s->name); - i = nvar; - nvar++; - v = &var[i]; - v->sym = s; - v->offset = o; - v->name = n; - v->etype = et; - if(debug['R']) - print("bit=%2d et=%2d %D\n", i, et, a); - -out: - bit = blsh(i); - if(n == D_EXTERN || n == D_STATIC) - for(z=0; z<BITS; z++) - externs.b[z] |= bit.b[z]; - if(n == D_PARAM) - for(z=0; z<BITS; z++) - params.b[z] |= bit.b[z]; - if(v->etype != et || !typechlpfd[et]) /* funny punning */ - for(z=0; z<BITS; z++) - addrs.b[z] |= bit.b[z]; - return bit; - -none: - return zbits; -} - -void -prop(Reg *r, Bits ref, Bits cal) -{ - Reg *r1, *r2; - int z; - - for(r1 = r; r1 != R; r1 = r1->p1) { - for(z=0; z<BITS; z++) { - ref.b[z] |= r1->refahead.b[z]; - if(ref.b[z] != r1->refahead.b[z]) { - r1->refahead.b[z] = ref.b[z]; - change++; - } - cal.b[z] |= r1->calahead.b[z]; - if(cal.b[z] != r1->calahead.b[z]) { - r1->calahead.b[z] = cal.b[z]; - change++; - } - } - switch(r1->prog->as) { - case ACALL: - for(z=0; z<BITS; z++) { - cal.b[z] |= ref.b[z] | externs.b[z]; - ref.b[z] = 0; - } - break; - - case ATEXT: - for(z=0; z<BITS; z++) { - cal.b[z] = 0; - ref.b[z] = 0; - } - break; - - case ARET: - for(z=0; z<BITS; z++) { - cal.b[z] = externs.b[z]; - ref.b[z] = 0; - } - } - for(z=0; z<BITS; z++) { - ref.b[z] = (ref.b[z] & ~r1->set.b[z]) | - r1->use1.b[z] | r1->use2.b[z]; - cal.b[z] &= ~(r1->set.b[z] | r1->use1.b[z] | r1->use2.b[z]); - r1->refbehind.b[z] = ref.b[z]; - r1->calbehind.b[z] = cal.b[z]; - } - if(r1->active) - break; - r1->active = 1; - } - for(; r != r1; r = r->p1) - for(r2 = r->p2; r2 != R; r2 = r2->p2link) - prop(r2, r->refbehind, r->calbehind); -} - -/* - * find looping structure - * - * 1) find reverse postordering - * 2) find approximate dominators, - * the actual dominators if the flow graph is reducible - * otherwise, dominators plus some other non-dominators. - * See Matthew S. Hecht and Jeffrey D. Ullman, - * "Analysis of a Simple Algorithm for Global Data Flow Problems", - * Conf. Record of ACM Symp. on Principles of Prog. Langs, Boston, Massachusetts, - * Oct. 1-3, 1973, pp. 207-217. - * 3) find all nodes with a predecessor dominated by the current node. - * such a node is a loop head. - * recursively, all preds with a greater rpo number are in the loop - */ -int32 -postorder(Reg *r, Reg **rpo2r, int32 n) -{ - Reg *r1; - - r->rpo = 1; - r1 = r->s1; - if(r1 && !r1->rpo) - n = postorder(r1, rpo2r, n); - r1 = r->s2; - if(r1 && !r1->rpo) - n = postorder(r1, rpo2r, n); - rpo2r[n] = r; - n++; - return n; -} - -int32 -rpolca(int32 *idom, int32 rpo1, int32 rpo2) -{ - int32 t; - - if(rpo1 == -1) - return rpo2; - while(rpo1 != rpo2){ - if(rpo1 > rpo2){ - t = rpo2; - rpo2 = rpo1; - rpo1 = t; - } - while(rpo1 < rpo2){ - t = idom[rpo2]; - if(t >= rpo2) - fatal(Z, "bad idom"); - rpo2 = t; - } - } - return rpo1; -} - -int -doms(int32 *idom, int32 r, int32 s) -{ - while(s > r) - s = idom[s]; - return s == r; -} - -int -loophead(int32 *idom, Reg *r) -{ - int32 src; - - src = r->rpo; - if(r->p1 != R && doms(idom, src, r->p1->rpo)) - return 1; - for(r = r->p2; r != R; r = r->p2link) - if(doms(idom, src, r->rpo)) - return 1; - return 0; -} - -void -loopmark(Reg **rpo2r, int32 head, Reg *r) -{ - if(r->rpo < head || r->active == head) - return; - r->active = head; - r->loop += LOOP; - if(r->p1 != R) - loopmark(rpo2r, head, r->p1); - for(r = r->p2; r != R; r = r->p2link) - loopmark(rpo2r, head, r); -} - -void -loopit(Reg *r, int32 nr) -{ - Reg *r1; - int32 i, d, me; - - if(nr > maxnr) { - rpo2r = alloc(nr * sizeof(Reg*)); - idom = alloc(nr * sizeof(int32)); - maxnr = nr; - } - - d = postorder(r, rpo2r, 0); - if(d > nr) - fatal(Z, "too many reg nodes"); - nr = d; - for(i = 0; i < nr / 2; i++){ - r1 = rpo2r[i]; - rpo2r[i] = rpo2r[nr - 1 - i]; - rpo2r[nr - 1 - i] = r1; - } - for(i = 0; i < nr; i++) - rpo2r[i]->rpo = i; - - idom[0] = 0; - for(i = 0; i < nr; i++){ - r1 = rpo2r[i]; - me = r1->rpo; - d = -1; - if(r1->p1 != R && r1->p1->rpo < me) - d = r1->p1->rpo; - for(r1 = r1->p2; r1 != nil; r1 = r1->p2link) - if(r1->rpo < me) - d = rpolca(idom, d, r1->rpo); - idom[i] = d; - } - - for(i = 0; i < nr; i++){ - r1 = rpo2r[i]; - r1->loop++; - if(r1->p2 != R && loophead(idom, r1)) - loopmark(rpo2r, i, r1); - } -} - -void -synch(Reg *r, Bits dif) -{ - Reg *r1; - int z; - - for(r1 = r; r1 != R; r1 = r1->s1) { - for(z=0; z<BITS; z++) { - dif.b[z] = (dif.b[z] & - ~(~r1->refbehind.b[z] & r1->refahead.b[z])) | - r1->set.b[z] | r1->regdiff.b[z]; - if(dif.b[z] != r1->regdiff.b[z]) { - r1->regdiff.b[z] = dif.b[z]; - change++; - } - } - if(r1->active) - break; - r1->active = 1; - for(z=0; z<BITS; z++) - dif.b[z] &= ~(~r1->calbehind.b[z] & r1->calahead.b[z]); - if(r1->s2 != R) - synch(r1->s2, dif); - } -} - -uint32 -allreg(uint32 b, Rgn *r) -{ - Var *v; - int i; - - v = var + r->varno; - r->regno = 0; - switch(v->etype) { - - default: - diag(Z, "unknown etype %d/%d", bitno(b), v->etype); - break; - - case TCHAR: - case TUCHAR: - case TSHORT: - case TUSHORT: - case TINT: - case TUINT: - case TLONG: - case TULONG: - case TIND: - case TARRAY: - i = BtoR(~b); - if(i && r->cost > 0) { - r->regno = i; - return RtoB(i); - } - break; - - case TDOUBLE: - case TFLOAT: - break; - } - return 0; -} - -void -paint1(Reg *r, int bn) -{ - Reg *r1; - Prog *p; - int z; - uint32 bb; - - z = bn/32; - bb = 1L<<(bn%32); - if(r->act.b[z] & bb) - return; - for(;;) { - if(!(r->refbehind.b[z] & bb)) - break; - r1 = r->p1; - if(r1 == R) - break; - if(!(r1->refahead.b[z] & bb)) - break; - if(r1->act.b[z] & bb) - break; - r = r1; - } - - if(LOAD(r) & ~(r->set.b[z]&~(r->use1.b[z]|r->use2.b[z])) & bb) { - change -= CLOAD * r->loop; - if(debug['R'] && debug['v']) - print("%d%P\td %B $%d\n", r->loop, - r->prog, blsh(bn), change); - } - for(;;) { - r->act.b[z] |= bb; - p = r->prog; - - if(r->use1.b[z] & bb) { - change += CREF * r->loop; - if(p->as == AFMOVL) - if(BtoR(bb) != D_F0) - change = -CINF; - if(debug['R'] && debug['v']) - print("%d%P\tu1 %B $%d\n", r->loop, - p, blsh(bn), change); - } - - if((r->use2.b[z]|r->set.b[z]) & bb) { - change += CREF * r->loop; - if(p->as == AFMOVL) - if(BtoR(bb) != D_F0) - change = -CINF; - if(debug['R'] && debug['v']) - print("%d%P\tu2 %B $%d\n", r->loop, - p, blsh(bn), change); - } - - if(STORE(r) & r->regdiff.b[z] & bb) { - change -= CLOAD * r->loop; - if(p->as == AFMOVL) - if(BtoR(bb) != D_F0) - change = -CINF; - if(debug['R'] && debug['v']) - print("%d%P\tst %B $%d\n", r->loop, - p, blsh(bn), change); - } - - if(r->refbehind.b[z] & bb) - for(r1 = r->p2; r1 != R; r1 = r1->p2link) - if(r1->refahead.b[z] & bb) - paint1(r1, bn); - - if(!(r->refahead.b[z] & bb)) - break; - r1 = r->s2; - if(r1 != R) - if(r1->refbehind.b[z] & bb) - paint1(r1, bn); - r = r->s1; - if(r == R) - break; - if(r->act.b[z] & bb) - break; - if(!(r->refbehind.b[z] & bb)) - break; - } -} - -uint32 -regset(Reg *r, uint32 bb) -{ - uint32 b, set; - Addr v; - int c; - - set = 0; - v = zprog.from; - while(b = bb & ~(bb-1)) { - v.type = BtoR(b); - c = copyu(r->prog, &v, A); - if(c == 3) - set |= b; - bb &= ~b; - } - return set; -} - -uint32 -reguse(Reg *r, uint32 bb) -{ - uint32 b, set; - Addr v; - int c; - - set = 0; - v = zprog.from; - while(b = bb & ~(bb-1)) { - v.type = BtoR(b); - c = copyu(r->prog, &v, A); - if(c == 1 || c == 2 || c == 4) - set |= b; - bb &= ~b; - } - return set; -} - -uint32 -paint2(Reg *r, int bn) -{ - Reg *r1; - int z; - uint32 bb, vreg, x; - - z = bn/32; - bb = 1L << (bn%32); - vreg = regbits; - if(!(r->act.b[z] & bb)) - return vreg; - for(;;) { - if(!(r->refbehind.b[z] & bb)) - break; - r1 = r->p1; - if(r1 == R) - break; - if(!(r1->refahead.b[z] & bb)) - break; - if(!(r1->act.b[z] & bb)) - break; - r = r1; - } - for(;;) { - r->act.b[z] &= ~bb; - - vreg |= r->regu; - - if(r->refbehind.b[z] & bb) - for(r1 = r->p2; r1 != R; r1 = r1->p2link) - if(r1->refahead.b[z] & bb) - vreg |= paint2(r1, bn); - - if(!(r->refahead.b[z] & bb)) - break; - r1 = r->s2; - if(r1 != R) - if(r1->refbehind.b[z] & bb) - vreg |= paint2(r1, bn); - r = r->s1; - if(r == R) - break; - if(!(r->act.b[z] & bb)) - break; - if(!(r->refbehind.b[z] & bb)) - break; - } - - bb = vreg; - for(; r; r=r->s1) { - x = r->regu & ~bb; - if(x) { - vreg |= reguse(r, x); - bb |= regset(r, x); - } - } - return vreg; -} - -void -paint3(Reg *r, int bn, int32 rb, int rn) -{ - Reg *r1; - Prog *p; - int z; - uint32 bb; - - z = bn/32; - bb = 1L << (bn%32); - if(r->act.b[z] & bb) - return; - for(;;) { - if(!(r->refbehind.b[z] & bb)) - break; - r1 = r->p1; - if(r1 == R) - break; - if(!(r1->refahead.b[z] & bb)) - break; - if(r1->act.b[z] & bb) - break; - r = r1; - } - - if(LOAD(r) & ~(r->set.b[z] & ~(r->use1.b[z]|r->use2.b[z])) & bb) - addmove(r, bn, rn, 0); - for(;;) { - r->act.b[z] |= bb; - p = r->prog; - - if(r->use1.b[z] & bb) { - if(debug['R']) - print("%P", p); - addreg(&p->from, rn); - if(debug['R']) - print("\t.c%P\n", p); - } - if((r->use2.b[z]|r->set.b[z]) & bb) { - if(debug['R']) - print("%P", p); - addreg(&p->to, rn); - if(debug['R']) - print("\t.c%P\n", p); - } - - if(STORE(r) & r->regdiff.b[z] & bb) - addmove(r, bn, rn, 1); - r->regu |= rb; - - if(r->refbehind.b[z] & bb) - for(r1 = r->p2; r1 != R; r1 = r1->p2link) - if(r1->refahead.b[z] & bb) - paint3(r1, bn, rb, rn); - - if(!(r->refahead.b[z] & bb)) - break; - r1 = r->s2; - if(r1 != R) - if(r1->refbehind.b[z] & bb) - paint3(r1, bn, rb, rn); - r = r->s1; - if(r == R) - break; - if(r->act.b[z] & bb) - break; - if(!(r->refbehind.b[z] & bb)) - break; - } -} - -void -addreg(Addr *a, int rn) -{ - - a->sym = 0; - a->offset = 0; - a->type = rn; -} - -int32 -RtoB(int r) -{ - - if(r < D_AX || r > D_DI) - return 0; - return 1L << (r-D_AX); -} - -int -BtoR(int32 b) -{ - - b &= 0xffL; - if(b == 0) - return 0; - return bitno(b) + D_AX; -} - -/* what instruction does a JMP to p eventually land on? */ -static Reg* -chasejmp(Reg *r, int *jmploop) -{ - int n; - - n = 0; - for(; r; r=r->s2) { - if(r->prog->as != AJMP || r->prog->to.type != D_BRANCH) - break; - if(++n > 10) { - *jmploop = 1; - break; - } - } - return r; -} - -/* mark all code reachable from firstp as alive */ -static void -mark(Reg *firstr) -{ - Reg *r; - Prog *p; - - for(r=firstr; r; r=r->link) { - if(r->active) - break; - r->active = 1; - p = r->prog; - if(p->as != ACALL && p->to.type == D_BRANCH) - mark(r->s2); - if(p->as == AJMP || p->as == ARET || p->as == AUNDEF) - break; - } -} - -/* - * the code generator depends on being able to write out JMP - * instructions that it can jump to now but fill in later. - * the linker will resolve them nicely, but they make the code - * longer and more difficult to follow during debugging. - * remove them. - */ -static void -fixjmp(Reg *firstr) -{ - int jmploop; - Reg *r; - Prog *p; - - if(debug['R'] && debug['v']) - print("\nfixjmp\n"); - - // pass 1: resolve jump to AJMP, mark all code as dead. - jmploop = 0; - for(r=firstr; r; r=r->link) { - p = r->prog; - if(debug['R'] && debug['v']) - print("%04d %P\n", (int)r->pc, p); - if(p->as != ACALL && p->to.type == D_BRANCH && r->s2 && r->s2->prog->as == AJMP) { - r->s2 = chasejmp(r->s2, &jmploop); - p->to.offset = r->s2->pc; - p->to.u.branch = r->s2->prog; - if(debug['R'] && debug['v']) - print("->%P\n", p); - } - r->active = 0; - } - if(debug['R'] && debug['v']) - print("\n"); - - // pass 2: mark all reachable code alive - mark(firstr); - - // pass 3: delete dead code (mostly JMPs). - for(r=firstr; r; r=r->link) { - if(!r->active) { - p = r->prog; - if(p->link == P && p->as == ARET && r->p1 && r->p1->prog->as != ARET) { - // This is the final ARET, and the code so far doesn't have one. - // Let it stay. - } else { - if(debug['R'] && debug['v']) - print("del %04d %P\n", (int)r->pc, p); - p->as = ANOP; - } - } - } - - // pass 4: elide JMP to next instruction. - // only safe if there are no jumps to JMPs anymore. - if(!jmploop) { - for(r=firstr; r; r=r->link) { - p = r->prog; - if(p->as == AJMP && p->to.type == D_BRANCH && r->s2 == r->link) { - if(debug['R'] && debug['v']) - print("del %04d %P\n", (int)r->pc, p); - p->as = ANOP; - } - } - } - - // fix back pointers. - for(r=firstr; r; r=r->link) { - r->p2 = R; - r->p2link = R; - } - for(r=firstr; r; r=r->link) { - if(r->s2) { - r->p2link = r->s2->p2; - r->s2->p2 = r; - } - } - - if(debug['R'] && debug['v']) { - print("\n"); - for(r=firstr; r; r=r->link) - print("%04d %P\n", (int)r->pc, r->prog); - print("\n"); - } -} - diff --git a/src/cmd/8c/sgen.c b/src/cmd/8c/sgen.c deleted file mode 100644 index d647010ef..000000000 --- a/src/cmd/8c/sgen.c +++ /dev/null @@ -1,483 +0,0 @@ -// Inferno utils/8c/sgen.c -// http://code.google.com/p/inferno-os/source/browse/utils/8c/sgen.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -Prog* -gtext(Sym *s, int32 stkoff) -{ - int32 a; - - a = argsize(1); - if((textflag & NOSPLIT) != 0 && stkoff >= 128) - yyerror("stack frame too large for NOSPLIT function"); - - gpseudo(ATEXT, s, nodconst(stkoff)); - p->to.type = D_CONST2; - p->to.offset2 = a; - return p; -} - -void -noretval(int n) -{ - - if(n & 1) { - gins(ANOP, Z, Z); - p->to.type = REGRET; - } - if(n & 2) { - gins(ANOP, Z, Z); - p->to.type = FREGRET; - } -} - -/* welcome to commute */ -static void -commute(Node *n) -{ - Node *l, *r; - - l = n->left; - r = n->right; - if(r->complex > l->complex) { - n->left = r; - n->right = l; - } -} - -void -indexshift(Node *n) -{ - int g; - - if(!typechlp[n->type->etype]) - return; - simplifyshift(n); - if(n->op == OASHL && n->right->op == OCONST){ - g = vconst(n->right); - if(g >= 0 && g < 4) - n->addable = 7; - } -} - -/* - * calculate addressability as follows - * NAME ==> 10/11 name+value(SB/SP) - * REGISTER ==> 12 register - * CONST ==> 20 $value - * *(20) ==> 21 value - * &(10) ==> 13 $name+value(SB) - * &(11) ==> 1 $name+value(SP) - * (13) + (20) ==> 13 fold constants - * (1) + (20) ==> 1 fold constants - * *(13) ==> 10 back to name - * *(1) ==> 11 back to name - * - * (20) * (X) ==> 7 multiplier in indexing - * (X,7) + (13,1) ==> 8 adder in indexing (addresses) - * (8) ==> &9(OINDEX) index, almost addressable - * 100 extern register - * - * calculate complexity (number of registers) - */ -void -xcom(Node *n) -{ - Node *l, *r; - int g; - - if(n == Z) - return; - l = n->left; - r = n->right; - n->complex = 0; - n->addable = 0; - switch(n->op) { - case OCONST: - n->addable = 20; - break; - - case ONAME: - n->addable = 10; - if(n->class == CPARAM || n->class == CAUTO) - n->addable = 11; - break; - - case OEXREG: - n->addable = 0; - break; - - case OREGISTER: - n->addable = 12; - break; - - case OINDREG: - n->addable = 12; - break; - - case OADDR: - xcom(l); - if(l->addable == 10) - n->addable = 13; - else - if(l->addable == 11) - n->addable = 1; - break; - - case OADD: - xcom(l); - xcom(r); - if(n->type->etype != TIND) - break; - - switch(r->addable) { - case 20: - switch(l->addable) { - case 1: - case 13: - commadd: - l->type = n->type; - *n = *l; - l = new(0, Z, Z); - *l = *(n->left); - l->xoffset += r->vconst; - n->left = l; - r = n->right; - goto brk; - } - break; - - case 1: - case 13: - case 10: - case 11: - /* l is the base, r is the index */ - if(l->addable != 20) - n->addable = 8; - break; - } - switch(l->addable) { - case 20: - switch(r->addable) { - case 13: - case 1: - r = n->left; - l = n->right; - n->left = l; - n->right = r; - goto commadd; - } - break; - - case 13: - case 1: - case 10: - case 11: - /* r is the base, l is the index */ - if(r->addable != 20) - n->addable = 8; - break; - } - if(n->addable == 8 && !side(n)) { - indx(n); - l = new1(OINDEX, idx.basetree, idx.regtree); - l->scale = idx.scale; - l->addable = 9; - l->complex = l->right->complex; - l->type = l->left->type; - n->op = OADDR; - n->left = l; - n->right = Z; - n->addable = 8; - break; - } - break; - - case OINDEX: - xcom(l); - xcom(r); - n->addable = 9; - break; - - case OIND: - xcom(l); - if(l->op == OADDR) { - l = l->left; - l->type = n->type; - *n = *l; - return; - } - switch(l->addable) { - case 20: - n->addable = 21; - break; - case 1: - n->addable = 11; - break; - case 13: - n->addable = 10; - break; - } - break; - - case OASHL: - xcom(l); - xcom(r); - indexshift(n); - break; - - case OMUL: - case OLMUL: - xcom(l); - xcom(r); - g = vlog(l); - if(g >= 0) { - n->left = r; - n->right = l; - l = r; - r = n->right; - } - g = vlog(r); - if(g >= 0) { - n->op = OASHL; - r->vconst = g; - r->type = types[TINT]; - indexshift(n); - break; - } -commute(n); - break; - - case OASLDIV: - xcom(l); - xcom(r); - g = vlog(r); - if(g >= 0) { - n->op = OASLSHR; - r->vconst = g; - r->type = types[TINT]; - } - break; - - case OLDIV: - xcom(l); - xcom(r); - g = vlog(r); - if(g >= 0) { - n->op = OLSHR; - r->vconst = g; - r->type = types[TINT]; - indexshift(n); - break; - } - break; - - case OASLMOD: - xcom(l); - xcom(r); - g = vlog(r); - if(g >= 0) { - n->op = OASAND; - r->vconst--; - } - break; - - case OLMOD: - xcom(l); - xcom(r); - g = vlog(r); - if(g >= 0) { - n->op = OAND; - r->vconst--; - } - break; - - case OASMUL: - case OASLMUL: - xcom(l); - xcom(r); - g = vlog(r); - if(g >= 0) { - n->op = OASASHL; - r->vconst = g; - } - break; - - case OLSHR: - case OASHR: - xcom(l); - xcom(r); - indexshift(n); - break; - - default: - if(l != Z) - xcom(l); - if(r != Z) - xcom(r); - break; - } -brk: - if(n->addable >= 10) - return; - if(l != Z) - n->complex = l->complex; - if(r != Z) { - if(r->complex == n->complex) - n->complex = r->complex+1; - else - if(r->complex > n->complex) - n->complex = r->complex; - } - if(n->complex == 0) - n->complex++; - - if(com64(n)) - return; - - switch(n->op) { - - case OFUNC: - n->complex = FNX; - break; - - case OLMOD: - case OMOD: - case OLMUL: - case OLDIV: - case OMUL: - case ODIV: - case OASLMUL: - case OASLDIV: - case OASLMOD: - case OASMUL: - case OASDIV: - case OASMOD: - if(r->complex >= l->complex) { - n->complex = l->complex + 3; - if(r->complex > n->complex) - n->complex = r->complex; - } else { - n->complex = r->complex + 3; - if(l->complex > n->complex) - n->complex = l->complex; - } - break; - - case OLSHR: - case OASHL: - case OASHR: - case OASLSHR: - case OASASHL: - case OASASHR: - if(r->complex >= l->complex) { - n->complex = l->complex + 2; - if(r->complex > n->complex) - n->complex = r->complex; - } else { - n->complex = r->complex + 2; - if(l->complex > n->complex) - n->complex = l->complex; - } - break; - - case OADD: - case OXOR: - case OAND: - case OOR: - /* - * immediate operators, make const on right - */ - if(l->op == OCONST) { - n->left = r; - n->right = l; - } - break; - - case OEQ: - case ONE: - case OLE: - case OLT: - case OGE: - case OGT: - case OHI: - case OHS: - case OLO: - case OLS: - /* - * compare operators, make const on left - */ - if(r->op == OCONST) { - n->left = r; - n->right = l; - n->op = invrel[relindex(n->op)]; - } - break; - } -} - -void -indx(Node *n) -{ - Node *l, *r; - - if(debug['x']) - prtree(n, "indx"); - - l = n->left; - r = n->right; - if(l->addable == 1 || l->addable == 13 || r->complex > l->complex) { - n->right = l; - n->left = r; - l = r; - r = n->right; - } - if(l->addable != 7) { - idx.regtree = l; - idx.scale = 1; - } else - if(l->right->addable == 20) { - idx.regtree = l->left; - idx.scale = 1 << l->right->vconst; - } else - if(l->left->addable == 20) { - idx.regtree = l->right; - idx.scale = 1 << l->left->vconst; - } else - diag(n, "bad index"); - - idx.basetree = r; - if(debug['x']) { - print("scale = %d\n", idx.scale); - prtree(idx.regtree, "index"); - prtree(idx.basetree, "base"); - } -} diff --git a/src/cmd/8c/swt.c b/src/cmd/8c/swt.c deleted file mode 100644 index d960519e3..000000000 --- a/src/cmd/8c/swt.c +++ /dev/null @@ -1,341 +0,0 @@ -// Inferno utils/8c/swt.c -// http://code.google.com/p/inferno-os/source/browse/utils/8c/swt.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -void -swit1(C1 *q, int nc, int32 def, Node *n) -{ - Node nreg; - - if(typev[n->type->etype]) { - regsalloc(&nreg, n); - nreg.type = types[TVLONG]; - cgen(n, &nreg); - swit2(q, nc, def, &nreg); - return; - } - - regalloc(&nreg, n, Z); - nreg.type = types[TLONG]; - cgen(n, &nreg); - swit2(q, nc, def, &nreg); - regfree(&nreg); -} - -void -swit2(C1 *q, int nc, int32 def, Node *n) -{ - C1 *r; - int i; - Prog *sp; - - if(nc < 5) { - for(i=0; i<nc; i++) { - if(debug['W']) - print("case = %.8ux\n", q->val); - gopcode(OEQ, n->type, n, nodconst(q->val)); - patch(p, q->label); - q++; - } - gbranch(OGOTO); - patch(p, def); - return; - } - i = nc / 2; - r = q+i; - if(debug['W']) - print("case > %.8ux\n", r->val); - gopcode(OGT, n->type, n, nodconst(r->val)); - sp = p; - gbranch(OGOTO); - p->as = AJEQ; - patch(p, r->label); - swit2(q, i, def, n); - - if(debug['W']) - print("case < %.8ux\n", r->val); - patch(sp, pc); - swit2(r+1, nc-i-1, def, n); -} - -void -bitload(Node *b, Node *n1, Node *n2, Node *n3, Node *nn) -{ - int sh; - int32 v; - Node *l; - - /* - * n1 gets adjusted/masked value - * n2 gets address of cell - * n3 gets contents of cell - */ - l = b->left; - if(n2 != Z) { - regalloc(n1, l, nn); - reglcgen(n2, l, Z); - regalloc(n3, l, Z); - gmove(n2, n3); - gmove(n3, n1); - } else { - regalloc(n1, l, nn); - cgen(l, n1); - } - if(b->type->shift == 0 && typeu[b->type->etype]) { - v = ~0 + (1L << b->type->nbits); - gopcode(OAND, types[TLONG], nodconst(v), n1); - } else { - sh = 32 - b->type->shift - b->type->nbits; - if(sh > 0) - gopcode(OASHL, types[TLONG], nodconst(sh), n1); - sh += b->type->shift; - if(sh > 0) - if(typeu[b->type->etype]) - gopcode(OLSHR, types[TLONG], nodconst(sh), n1); - else - gopcode(OASHR, types[TLONG], nodconst(sh), n1); - } -} - -void -bitstore(Node *b, Node *n1, Node *n2, Node *n3, Node *nn) -{ - int32 v; - Node nod; - int sh; - - regalloc(&nod, b->left, Z); - v = ~0 + (1L << b->type->nbits); - gopcode(OAND, types[TLONG], nodconst(v), n1); - gmove(n1, &nod); - if(nn != Z) - gmove(n1, nn); - sh = b->type->shift; - if(sh > 0) - gopcode(OASHL, types[TLONG], nodconst(sh), &nod); - v <<= sh; - gopcode(OAND, types[TLONG], nodconst(~v), n3); - gopcode(OOR, types[TLONG], n3, &nod); - gmove(&nod, n2); - - regfree(&nod); - regfree(n1); - regfree(n2); - regfree(n3); -} - -int32 -outstring(char *s, int32 n) -{ - int32 r; - - if(suppress) - return nstring; - r = nstring; - while(n) { - string[mnstring] = *s++; - mnstring++; - nstring++; - if(mnstring >= NSNAME) { - gpseudo(ADATA, symstring, nodconst(0L)); - p->from.offset += nstring - NSNAME; - p->from.scale = NSNAME; - p->to.type = D_SCONST; - memmove(p->to.u.sval, string, NSNAME); - mnstring = 0; - } - n--; - } - return r; -} - -void -sextern(Sym *s, Node *a, int32 o, int32 w) -{ - int32 e, lw; - - for(e=0; e<w; e+=NSNAME) { - lw = NSNAME; - if(w-e < lw) - lw = w-e; - gpseudo(ADATA, s, nodconst(0L)); - p->from.offset += o+e; - p->from.scale = lw; - p->to.type = D_SCONST; - memmove(p->to.u.sval, a->cstring+e, lw); - } -} - -void -gextern(Sym *s, Node *a, int32 o, int32 w) -{ - if(a->op == OCONST && typev[a->type->etype]) { - gpseudo(ADATA, s, lo64(a)); - p->from.offset += o; - p->from.scale = 4; - gpseudo(ADATA, s, hi64(a)); - p->from.offset += o + 4; - p->from.scale = 4; - return; - } - gpseudo(ADATA, s, a); - p->from.offset += o; - p->from.scale = w; - switch(p->to.type) { - default: - p->to.index = p->to.type; - p->to.type = D_ADDR; - case D_CONST: - case D_FCONST: - case D_ADDR: - break; - } -} - -void -outcode(void) -{ - int f; - Biobuf b; - - f = open(outfile, OWRITE); - if(f < 0) { - diag(Z, "cannot open %s", outfile); - return; - } - Binit(&b, f, OWRITE); - - Bprint(&b, "go object %s %s %s\n", getgoos(), getgoarch(), getgoversion()); - if(pragcgobuf.to > pragcgobuf.start) { - Bprint(&b, "\n"); - Bprint(&b, "$$ // exports\n\n"); - Bprint(&b, "$$ // local types\n\n"); - Bprint(&b, "$$ // cgo\n"); - Bprint(&b, "%s", fmtstrflush(&pragcgobuf)); - Bprint(&b, "\n$$\n\n"); - } - Bprint(&b, "!\n"); - - writeobj(ctxt, &b); - Bterm(&b); - close(f); - lastp = P; -} - -int32 -align(int32 i, Type *t, int op, int32 *maxalign) -{ - int32 o; - Type *v; - int w, packw; - - o = i; - w = 1; - packw = 0; - switch(op) { - default: - diag(Z, "unknown align opcode %d", op); - break; - - case Asu2: /* padding at end of a struct */ - w = *maxalign; - if(w < 1) - w = 1; - if(packflg) - packw = packflg; - break; - - case Ael1: /* initial align of struct element */ - for(v=t; v->etype==TARRAY; v=v->link) - ; - if(v->etype == TSTRUCT || v->etype == TUNION) - w = v->align; - else { - w = ewidth[v->etype]; - if(w == 8) - w = 4; - } - if(w < 1 || w > SZ_LONG) - fatal(Z, "align"); - if(packflg) - packw = packflg; - break; - - case Ael2: /* width of a struct element */ - o += t->width; - break; - - case Aarg0: /* initial passbyptr argument in arg list */ - if(typesuv[t->etype]) { - o = align(o, types[TIND], Aarg1, nil); - o = align(o, types[TIND], Aarg2, nil); - } - break; - - case Aarg1: /* initial align of parameter */ - w = ewidth[t->etype]; - if(w <= 0 || w >= SZ_LONG) { - w = SZ_LONG; - break; - } - w = 1; /* little endian no adjustment */ - break; - - case Aarg2: /* width of a parameter */ - o += t->width; - w = t->width; - if(w > SZ_LONG) - w = SZ_LONG; - break; - - case Aaut3: /* total align of automatic */ - o = align(o, t, Ael1, nil); - o = align(o, t, Ael2, nil); - break; - } - if(packw != 0 && xround(o, w) != xround(o, packw)) - diag(Z, "#pragma pack changes offset of %T", t); - o = xround(o, w); - if(maxalign && *maxalign < w) - *maxalign = w; - if(debug['A']) - print("align %s %d %T = %d\n", bnames[op], i, t, o); - return o; -} - -int32 -maxround(int32 max, int32 v) -{ - v = xround(v, SZ_LONG); - if(v > max) - return v; - return max; -} diff --git a/src/cmd/8c/txt.c b/src/cmd/8c/txt.c deleted file mode 100644 index 7f87a0a0d..000000000 --- a/src/cmd/8c/txt.c +++ /dev/null @@ -1,1537 +0,0 @@ -// Inferno utils/8c/txt.c -// http://code.google.com/p/inferno-os/source/browse/utils/8c/txt.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - - -int thechar = '8'; -char *thestring = "386"; - -LinkArch *thelinkarch = &link386; - -void -linkarchinit(void) -{ -} - -void -ginit(void) -{ - int i; - Type *t; - - exregoffset = 0; - exfregoffset = 0; - listinit(); - nstring = 0; - mnstring = 0; - nrathole = 0; - pc = 0; - breakpc = -1; - continpc = -1; - cases = C; - lastp = P; - tfield = types[TLONG]; - - zprog.link = P; - zprog.as = AGOK; - zprog.from.type = D_NONE; - zprog.from.index = D_NONE; - zprog.from.scale = 0; - zprog.to = zprog.from; - - regnode.op = OREGISTER; - regnode.class = CEXREG; - regnode.reg = REGTMP; - regnode.complex = 0; - regnode.addable = 11; - regnode.type = types[TLONG]; - - fregnode0 = regnode; - fregnode0.reg = D_F0; - fregnode0.type = types[TDOUBLE]; - - fregnode1 = fregnode0; - fregnode1.reg = D_F0+1; - - constnode.op = OCONST; - constnode.class = CXXX; - constnode.complex = 0; - constnode.addable = 20; - constnode.type = types[TLONG]; - - fconstnode.op = OCONST; - fconstnode.class = CXXX; - fconstnode.complex = 0; - fconstnode.addable = 20; - fconstnode.type = types[TDOUBLE]; - - nodsafe = new(ONAME, Z, Z); - nodsafe->sym = slookup(".safe"); - nodsafe->type = types[TINT]; - nodsafe->etype = types[TINT]->etype; - nodsafe->class = CAUTO; - complex(nodsafe); - - t = typ(TARRAY, types[TCHAR]); - symrathole = slookup(".rathole"); - symrathole->class = CGLOBL; - symrathole->type = t; - - nodrat = new(ONAME, Z, Z); - nodrat->sym = symrathole; - nodrat->type = types[TIND]; - nodrat->etype = TVOID; - nodrat->class = CGLOBL; - complex(nodrat); - nodrat->type = t; - - nodret = new(ONAME, Z, Z); - nodret->sym = slookup(".ret"); - nodret->type = types[TIND]; - nodret->etype = TIND; - nodret->class = CPARAM; - nodret = new(OIND, nodret, Z); - complex(nodret); - - com64init(); - - for(i=0; i<nelem(reg); i++) { - reg[i] = 1; - if(i >= D_AX && i <= D_DI && i != D_SP) - reg[i] = 0; - } -} - -void -gclean(void) -{ - int i; - Sym *s; - - reg[D_SP]--; - for(i=D_AX; i<=D_DI; i++) - if(reg[i]) - diag(Z, "reg %R left allocated", i); - while(mnstring) - outstring("", 1L); - symstring->type->width = nstring; - symrathole->type->width = nrathole; - for(i=0; i<NHASH; i++) - for(s = hash[i]; s != S; s = s->link) { - if(s->type == T) - continue; - if(s->type->width == 0) - continue; - if(s->class != CGLOBL && s->class != CSTATIC) - continue; - if(s->type == types[TENUM]) - continue; - gpseudo(AGLOBL, s, nodconst(s->type->width)); - } - nextpc(); - p->as = AEND; - outcode(); -} - -void -nextpc(void) -{ - Plist *pl; - - p = alloc(sizeof(*p)); - *p = zprog; - p->lineno = nearln; - p->pc = pc; - pc++; - if(lastp == nil) { - pl = linknewplist(ctxt); - pl->firstpc = p; - } else - lastp->link = p; - lastp = p; -} - -void -gargs(Node *n, Node *tn1, Node *tn2) -{ - int32 regs; - Node fnxargs[20], *fnxp; - - regs = cursafe; - - fnxp = fnxargs; - garg1(n, tn1, tn2, 0, &fnxp); /* compile fns to temps */ - - curarg = 0; - fnxp = fnxargs; - garg1(n, tn1, tn2, 1, &fnxp); /* compile normal args and temps */ - - cursafe = regs; -} - -int -nareg(void) -{ - int i, n; - - n = 0; - for(i=D_AX; i<=D_DI; i++) - if(reg[i] == 0) - n++; - return n; -} - -void -garg1(Node *n, Node *tn1, Node *tn2, int f, Node **fnxp) -{ - Node nod; - - if(n == Z) - return; - if(n->op == OLIST) { - garg1(n->left, tn1, tn2, f, fnxp); - garg1(n->right, tn1, tn2, f, fnxp); - return; - } - if(f == 0) { - if(n->complex >= FNX) { - regsalloc(*fnxp, n); - nod = znode; - nod.op = OAS; - nod.left = *fnxp; - nod.right = n; - nod.type = n->type; - cgen(&nod, Z); - (*fnxp)++; - } - return; - } - if(typesu[n->type->etype] || typev[n->type->etype]) { - regaalloc(tn2, n); - if(n->complex >= FNX) { - sugen(*fnxp, tn2, n->type->width); - (*fnxp)++; - } else - sugen(n, tn2, n->type->width); - return; - } - if(REGARG >= 0 && curarg == 0 && typeilp[n->type->etype]) { - regaalloc1(tn1, n); - if(n->complex >= FNX) { - cgen(*fnxp, tn1); - (*fnxp)++; - } else - cgen(n, tn1); - return; - } - if(vconst(n) == 0) { - regaalloc(tn2, n); - gmove(n, tn2); - return; - } - regalloc(tn1, n, Z); - if(n->complex >= FNX) { - cgen(*fnxp, tn1); - (*fnxp)++; - } else - cgen(n, tn1); - regaalloc(tn2, n); - gmove(tn1, tn2); - regfree(tn1); -} - -Node* -nodconst(int32 v) -{ - constnode.vconst = v; - return &constnode; -} - -Node* -nodfconst(double d) -{ - fconstnode.fconst = d; - return &fconstnode; -} - -int -isreg(Node *n, int r) -{ - - if(n->op == OREGISTER) - if(n->reg == r) - return 1; - return 0; -} - -int -nodreg(Node *n, Node *nn, int r) -{ - - *n = regnode; - n->reg = r; - if(reg[r] == 0) - return 0; - if(nn != Z) { - n->type = nn->type; - n->lineno = nn->lineno; - if(nn->op == OREGISTER) - if(nn->reg == r) - return 0; - } - return 1; -} - -void -regret(Node *n, Node *nn, Type *t, int mode) -{ - int r; - - if(mode == 0 || hasdotdotdot(t) || nn->type->width == 0) { - r = REGRET; - if(typefd[nn->type->etype]) - r = FREGRET; - nodreg(n, nn, r); - reg[r]++; - return; - } - - if(mode == 1) { - // fetch returned value after call. - // already called gargs, so curarg is set. - curarg = (curarg+3) & ~3; - regaalloc(n, nn); - return; - } - - if(mode == 2) { - // store value to be returned. - // must compute arg offset. - if(t->etype != TFUNC) - fatal(Z, "bad regret func %T", t); - *n = *nn; - n->op = ONAME; - n->class = CPARAM; - n->sym = slookup(".retx"); - n->complex = 0; - n->addable = 20; - n->xoffset = argsize(0); - return; - } - - fatal(Z, "bad regret"); -} - -void -regalloc(Node *n, Node *tn, Node *o) -{ - int i; - - switch(tn->type->etype) { - case TCHAR: - case TUCHAR: - case TSHORT: - case TUSHORT: - case TINT: - case TUINT: - case TLONG: - case TULONG: - case TIND: - if(o != Z && o->op == OREGISTER) { - i = o->reg; - if(i >= D_AX && i <= D_DI) - goto out; - } - for(i=D_AX; i<=D_DI; i++) - if(reg[i] == 0) - goto out; - diag(tn, "out of fixed registers"); - goto err; - - case TFLOAT: - case TDOUBLE: - case TVLONG: - i = D_F0; - goto out; - } - diag(tn, "unknown type in regalloc: %T", tn->type); -err: - i = 0; -out: - if(i) - reg[i]++; - nodreg(n, tn, i); -} - -void -regialloc(Node *n, Node *tn, Node *o) -{ - Node nod; - - nod = *tn; - nod.type = types[TIND]; - regalloc(n, &nod, o); -} - -void -regfree(Node *n) -{ - int i; - - i = 0; - if(n->op != OREGISTER && n->op != OINDREG) - goto err; - i = n->reg; - if(i < 0 || i >= nelem(reg)) - goto err; - if(reg[i] <= 0) - goto err; - reg[i]--; - return; -err: - diag(n, "error in regfree: %R", i); -} - -void -regsalloc(Node *n, Node *nn) -{ - cursafe = align(cursafe, nn->type, Aaut3, nil); - maxargsafe = maxround(maxargsafe, cursafe+curarg); - *n = *nodsafe; - n->xoffset = -(stkoff + cursafe); - n->type = nn->type; - n->etype = nn->type->etype; - n->lineno = nn->lineno; -} - -void -regaalloc1(Node *n, Node *nn) -{ - if(REGARG < 0) { - fatal(n, "regaalloc1 and REGARG<0"); - return; - } - nodreg(n, nn, REGARG); - reg[REGARG]++; - curarg = align(curarg, nn->type, Aarg1, nil); - curarg = align(curarg, nn->type, Aarg2, nil); - maxargsafe = maxround(maxargsafe, cursafe+curarg); -} - -void -regaalloc(Node *n, Node *nn) -{ - curarg = align(curarg, nn->type, Aarg1, nil); - *n = *nn; - n->op = OINDREG; - n->reg = REGSP; - n->xoffset = curarg; - n->complex = 0; - n->addable = 20; - curarg = align(curarg, nn->type, Aarg2, nil); - maxargsafe = maxround(maxargsafe, cursafe+curarg); -} - -void -regind(Node *n, Node *nn) -{ - - if(n->op != OREGISTER) { - diag(n, "regind not OREGISTER"); - return; - } - n->op = OINDREG; - n->type = nn->type; -} - -void -naddr(Node *n, Addr *a) -{ - int32 v; - - a->type = D_NONE; - if(n == Z) - return; - switch(n->op) { - default: - bad: - diag(n, "bad in naddr: %O %D", n->op, a); - break; - - case OREGISTER: - a->type = n->reg; - a->sym = nil; - break; - - case OEXREG: - a->type = D_INDIR + D_TLS; - a->offset = n->reg - 1; - break; - - case OIND: - naddr(n->left, a); - if(a->type >= D_AX && a->type <= D_DI) - a->type += D_INDIR; - else - if(a->type == D_CONST) - a->type = D_NONE+D_INDIR; - else - if(a->type == D_ADDR) { - a->type = a->index; - a->index = D_NONE; - } else - goto bad; - break; - - case OINDEX: - a->type = idx.ptr; - if(n->left->op == OADDR || n->left->op == OCONST) - naddr(n->left, a); - if(a->type >= D_AX && a->type <= D_DI) - a->type += D_INDIR; - else - if(a->type == D_CONST) - a->type = D_NONE+D_INDIR; - else - if(a->type == D_ADDR) { - a->type = a->index; - a->index = D_NONE; - } else - goto bad; - a->index = idx.reg; - a->scale = n->scale; - a->offset += n->xoffset; - break; - - case OINDREG: - a->type = n->reg+D_INDIR; - a->sym = nil; - a->offset = n->xoffset; - break; - - case ONAME: - a->etype = n->etype; - a->type = D_STATIC; - a->sym = linksym(n->sym); - a->offset = n->xoffset; - if(n->class == CSTATIC) - break; - if(n->class == CEXTERN || n->class == CGLOBL) { - a->type = D_EXTERN; - break; - } - if(n->class == CAUTO) { - a->type = D_AUTO; - break; - } - if(n->class == CPARAM) { - a->type = D_PARAM; - break; - } - goto bad; - - case OCONST: - if(typefd[n->type->etype]) { - a->type = D_FCONST; - a->u.dval = n->fconst; - break; - } - a->sym = nil; - a->type = D_CONST; - a->offset = n->vconst; - break; - - case OADDR: - naddr(n->left, a); - if(a->type >= D_INDIR) { - a->type -= D_INDIR; - break; - } - if(a->type == D_EXTERN || a->type == D_STATIC || - a->type == D_AUTO || a->type == D_PARAM) - if(a->index == D_NONE) { - a->index = a->type; - a->type = D_ADDR; - break; - } - goto bad; - - case OADD: - if(n->right->op == OCONST) { - v = n->right->vconst; - naddr(n->left, a); - } else - if(n->left->op == OCONST) { - v = n->left->vconst; - naddr(n->right, a); - } else - goto bad; - a->offset += v; - break; - - } -} - -#define CASE(a,b) ((a<<8)|(b<<0)) - -void -gmove(Node *f, Node *t) -{ - int ft, tt, a; - Node nod, nod1; - Prog *p1; - - ft = f->type->etype; - tt = t->type->etype; - if(debug['M']) - print("gop: %O %O[%s],%O[%s]\n", OAS, - f->op, tnames[ft], t->op, tnames[tt]); - if(typefd[ft] && f->op == OCONST) { - if(f->fconst == 0) - gins(AFLDZ, Z, Z); - else - if(f->fconst == 1) - gins(AFLD1, Z, Z); - else - gins(AFMOVD, f, &fregnode0); - gmove(&fregnode0, t); - return; - } -/* - * load - */ - if(f->op == ONAME || f->op == OINDREG || - f->op == OIND || f->op == OINDEX) - switch(ft) { - case TCHAR: - a = AMOVBLSX; - goto ld; - case TUCHAR: - a = AMOVBLZX; - goto ld; - case TSHORT: - if(typefd[tt]) { - gins(AFMOVW, f, &fregnode0); - gmove(&fregnode0, t); - return; - } - a = AMOVWLSX; - goto ld; - case TUSHORT: - a = AMOVWLZX; - goto ld; - case TINT: - case TUINT: - case TLONG: - case TULONG: - case TIND: - if(typefd[tt]) { - gins(AFMOVL, f, &fregnode0); - gmove(&fregnode0, t); - return; - } - a = AMOVL; - - ld: - regalloc(&nod, f, t); - nod.type = types[TLONG]; - gins(a, f, &nod); - gmove(&nod, t); - regfree(&nod); - return; - - case TFLOAT: - gins(AFMOVF, f, t); - return; - case TDOUBLE: - gins(AFMOVD, f, t); - return; - case TVLONG: - gins(AFMOVV, f, t); - return; - } - -/* - * store - */ - if(t->op == ONAME || t->op == OINDREG || - t->op == OIND || t->op == OINDEX) - switch(tt) { - case TCHAR: - case TUCHAR: - a = AMOVB; goto st; - case TSHORT: - case TUSHORT: - a = AMOVW; goto st; - case TINT: - case TUINT: - case TLONG: - case TULONG: - case TIND: - a = AMOVL; goto st; - - st: - if(f->op == OCONST) { - gins(a, f, t); - return; - } - regalloc(&nod, t, f); - gmove(f, &nod); - gins(a, &nod, t); - regfree(&nod); - return; - - case TFLOAT: - gins(AFMOVFP, f, t); - return; - case TDOUBLE: - gins(AFMOVDP, f, t); - return; - case TVLONG: - gins(AFMOVVP, f, t); - return; - } - -/* - * convert - */ - switch(CASE(ft,tt)) { - default: -/* - * integer to integer - ******** - a = AGOK; break; - - case CASE( TCHAR, TCHAR): - case CASE( TUCHAR, TCHAR): - case CASE( TSHORT, TCHAR): - case CASE( TUSHORT,TCHAR): - case CASE( TINT, TCHAR): - case CASE( TUINT, TCHAR): - case CASE( TLONG, TCHAR): - case CASE( TULONG, TCHAR): - case CASE( TIND, TCHAR): - - case CASE( TCHAR, TUCHAR): - case CASE( TUCHAR, TUCHAR): - case CASE( TSHORT, TUCHAR): - case CASE( TUSHORT,TUCHAR): - case CASE( TINT, TUCHAR): - case CASE( TUINT, TUCHAR): - case CASE( TLONG, TUCHAR): - case CASE( TULONG, TUCHAR): - case CASE( TIND, TUCHAR): - - case CASE( TSHORT, TSHORT): - case CASE( TUSHORT,TSHORT): - case CASE( TINT, TSHORT): - case CASE( TUINT, TSHORT): - case CASE( TLONG, TSHORT): - case CASE( TULONG, TSHORT): - case CASE( TIND, TSHORT): - - case CASE( TSHORT, TUSHORT): - case CASE( TUSHORT,TUSHORT): - case CASE( TINT, TUSHORT): - case CASE( TUINT, TUSHORT): - case CASE( TLONG, TUSHORT): - case CASE( TULONG, TUSHORT): - case CASE( TIND, TUSHORT): - - case CASE( TINT, TINT): - case CASE( TUINT, TINT): - case CASE( TLONG, TINT): - case CASE( TULONG, TINT): - case CASE( TIND, TINT): - - case CASE( TINT, TUINT): - case CASE( TUINT, TUINT): - case CASE( TLONG, TUINT): - case CASE( TULONG, TUINT): - case CASE( TIND, TUINT): - - case CASE( TINT, TLONG): - case CASE( TUINT, TLONG): - case CASE( TLONG, TLONG): - case CASE( TULONG, TLONG): - case CASE( TIND, TLONG): - - case CASE( TINT, TULONG): - case CASE( TUINT, TULONG): - case CASE( TLONG, TULONG): - case CASE( TULONG, TULONG): - case CASE( TIND, TULONG): - - case CASE( TINT, TIND): - case CASE( TUINT, TIND): - case CASE( TLONG, TIND): - case CASE( TULONG, TIND): - case CASE( TIND, TIND): - *****/ - a = AMOVL; - break; - - case CASE( TSHORT, TINT): - case CASE( TSHORT, TUINT): - case CASE( TSHORT, TLONG): - case CASE( TSHORT, TULONG): - case CASE( TSHORT, TIND): - a = AMOVWLSX; - if(f->op == OCONST) { - f->vconst &= 0xffff; - if(f->vconst & 0x8000) - f->vconst |= 0xffff0000; - a = AMOVL; - } - break; - - case CASE( TUSHORT,TINT): - case CASE( TUSHORT,TUINT): - case CASE( TUSHORT,TLONG): - case CASE( TUSHORT,TULONG): - case CASE( TUSHORT,TIND): - a = AMOVWLZX; - if(f->op == OCONST) { - f->vconst &= 0xffff; - a = AMOVL; - } - break; - - case CASE( TCHAR, TSHORT): - case CASE( TCHAR, TUSHORT): - case CASE( TCHAR, TINT): - case CASE( TCHAR, TUINT): - case CASE( TCHAR, TLONG): - case CASE( TCHAR, TULONG): - case CASE( TCHAR, TIND): - a = AMOVBLSX; - if(f->op == OCONST) { - f->vconst &= 0xff; - if(f->vconst & 0x80) - f->vconst |= 0xffffff00; - a = AMOVL; - } - break; - - case CASE( TUCHAR, TSHORT): - case CASE( TUCHAR, TUSHORT): - case CASE( TUCHAR, TINT): - case CASE( TUCHAR, TUINT): - case CASE( TUCHAR, TLONG): - case CASE( TUCHAR, TULONG): - case CASE( TUCHAR, TIND): - a = AMOVBLZX; - if(f->op == OCONST) { - f->vconst &= 0xff; - a = AMOVL; - } - break; - -/* - * float to fix - */ - case CASE( TFLOAT, TCHAR): - case CASE( TFLOAT, TUCHAR): - case CASE( TFLOAT, TSHORT): - case CASE( TFLOAT, TUSHORT): - case CASE( TFLOAT, TINT): - case CASE( TFLOAT, TUINT): - case CASE( TFLOAT, TLONG): - case CASE( TFLOAT, TULONG): - case CASE( TFLOAT, TIND): - - case CASE( TDOUBLE,TCHAR): - case CASE( TDOUBLE,TUCHAR): - case CASE( TDOUBLE,TSHORT): - case CASE( TDOUBLE,TUSHORT): - case CASE( TDOUBLE,TINT): - case CASE( TDOUBLE,TUINT): - case CASE( TDOUBLE,TLONG): - case CASE( TDOUBLE,TULONG): - case CASE( TDOUBLE,TIND): - - case CASE( TVLONG, TCHAR): - case CASE( TVLONG, TUCHAR): - case CASE( TVLONG, TSHORT): - case CASE( TVLONG, TUSHORT): - case CASE( TVLONG, TINT): - case CASE( TVLONG, TUINT): - case CASE( TVLONG, TLONG): - case CASE( TVLONG, TULONG): - case CASE( TVLONG, TIND): - if(fproundflg) { - regsalloc(&nod, ®node); - gins(AFMOVLP, f, &nod); - gmove(&nod, t); - return; - } - regsalloc(&nod, ®node); - regsalloc(&nod1, ®node); - gins(AFSTCW, Z, &nod1); - nod1.xoffset += 2; - gins(AMOVW, nodconst(0xf7f), &nod1); - gins(AFLDCW, &nod1, Z); - gins(AFMOVLP, f, &nod); - nod1.xoffset -= 2; - gins(AFLDCW, &nod1, Z); - gmove(&nod, t); - return; - -/* - * ulong to float - */ - case CASE( TULONG, TDOUBLE): - case CASE( TULONG, TVLONG): - case CASE( TULONG, TFLOAT): - case CASE( TUINT, TDOUBLE): - case CASE( TUINT, TVLONG): - case CASE( TUINT, TFLOAT): - regalloc(&nod, f, f); - gmove(f, &nod); - regsalloc(&nod1, ®node); - gmove(&nod, &nod1); - gins(AFMOVL, &nod1, &fregnode0); - gins(ACMPL, &nod, nodconst(0)); - gins(AJGE, Z, Z); - p1 = p; - gins(AFADDD, nodfconst(4294967296.), &fregnode0); - patch(p1, pc); - regfree(&nod); - return; - -/* - * fix to float - */ - case CASE( TCHAR, TFLOAT): - case CASE( TUCHAR, TFLOAT): - case CASE( TSHORT, TFLOAT): - case CASE( TUSHORT,TFLOAT): - case CASE( TINT, TFLOAT): - case CASE( TLONG, TFLOAT): - case CASE( TIND, TFLOAT): - - case CASE( TCHAR, TDOUBLE): - case CASE( TUCHAR, TDOUBLE): - case CASE( TSHORT, TDOUBLE): - case CASE( TUSHORT,TDOUBLE): - case CASE( TINT, TDOUBLE): - case CASE( TLONG, TDOUBLE): - case CASE( TIND, TDOUBLE): - - case CASE( TCHAR, TVLONG): - case CASE( TUCHAR, TVLONG): - case CASE( TSHORT, TVLONG): - case CASE( TUSHORT,TVLONG): - case CASE( TINT, TVLONG): - case CASE( TLONG, TVLONG): - case CASE( TIND, TVLONG): - regsalloc(&nod, ®node); - gmove(f, &nod); - gins(AFMOVL, &nod, &fregnode0); - return; - -/* - * float to float - */ - case CASE( TFLOAT, TFLOAT): - case CASE( TDOUBLE,TFLOAT): - case CASE( TVLONG, TFLOAT): - - case CASE( TFLOAT, TDOUBLE): - case CASE( TDOUBLE,TDOUBLE): - case CASE( TVLONG, TDOUBLE): - - case CASE( TFLOAT, TVLONG): - case CASE( TDOUBLE,TVLONG): - case CASE( TVLONG, TVLONG): - a = AFMOVD; break; - } - if(a == AMOVL || a == AFMOVD) - if(samaddr(f, t)) - return; - gins(a, f, t); -} - -void -doindex(Node *n) -{ - Node nod, nod1; - int32 v; - -if(debug['Y']) -prtree(n, "index"); - -if(n->left->complex >= FNX) -print("botch in doindex\n"); - - regalloc(&nod, ®node, Z); - v = constnode.vconst; - cgen(n->right, &nod); - idx.ptr = D_NONE; - if(n->left->op == OCONST) - idx.ptr = D_CONST; - else if(n->left->op == OREGISTER) - idx.ptr = n->left->reg; - else if(n->left->op != OADDR) { - reg[D_BP]++; // can't be used as a base - regalloc(&nod1, ®node, Z); - cgen(n->left, &nod1); - idx.ptr = nod1.reg; - regfree(&nod1); - reg[D_BP]--; - } - idx.reg = nod.reg; - regfree(&nod); - constnode.vconst = v; -} - -void -gins(int a, Node *f, Node *t) -{ - - if(f != Z && f->op == OINDEX) - doindex(f); - if(t != Z && t->op == OINDEX) - doindex(t); - nextpc(); - p->as = a; - if(f != Z) - naddr(f, &p->from); - if(t != Z) - naddr(t, &p->to); - if(debug['g']) - print("%P\n", p); -} - -void -fgopcode(int o, Node *f, Node *t, int pop, int rev) -{ - int a, et; - Node nod; - - et = TLONG; - if(f != Z && f->type != T) - et = f->type->etype; - if(!typefd[et]) { - diag(f, "fop: integer %O", o); - return; - } - if(debug['M']) { - if(t != Z && t->type != T) - print("gop: %O %O-%s Z\n", o, f->op, tnames[et]); - else - print("gop: %O %O-%s %O-%s\n", o, - f->op, tnames[et], t->op, tnames[t->type->etype]); - } - a = AGOK; - switch(o) { - - case OASADD: - case OADD: - if(et == TFLOAT) - a = AFADDF; - else - if(et == TDOUBLE || et == TVLONG) { - a = AFADDD; - if(pop) - a = AFADDDP; - } - break; - - case OASSUB: - case OSUB: - if(et == TFLOAT) { - a = AFSUBF; - if(rev) - a = AFSUBRF; - } else - if(et == TDOUBLE || et == TVLONG) { - a = AFSUBD; - if(pop) - a = AFSUBDP; - if(rev) { - a = AFSUBRD; - if(pop) - a = AFSUBRDP; - } - } - break; - - case OASMUL: - case OMUL: - if(et == TFLOAT) - a = AFMULF; - else - if(et == TDOUBLE || et == TVLONG) { - a = AFMULD; - if(pop) - a = AFMULDP; - } - break; - - case OASMOD: - case OMOD: - case OASDIV: - case ODIV: - if(et == TFLOAT) { - a = AFDIVF; - if(rev) - a = AFDIVRF; - } else - if(et == TDOUBLE || et == TVLONG) { - a = AFDIVD; - if(pop) - a = AFDIVDP; - if(rev) { - a = AFDIVRD; - if(pop) - a = AFDIVRDP; - } - } - break; - - case OEQ: - case ONE: - case OLT: - case OLE: - case OGE: - case OGT: - pop += rev; - if(et == TFLOAT) { - a = AFCOMF; - if(pop) { - a = AFCOMFP; - if(pop > 1) - a = AGOK; - } - } else - if(et == TDOUBLE || et == TVLONG) { - a = AFCOMF; - if(pop) { - a = AFCOMDP; - if(pop > 1) - a = AFCOMDPP; - } - } - gins(a, f, t); - regalloc(&nod, ®node, Z); - if(nod.reg != D_AX) { - regfree(&nod); - nod.reg = D_AX; - gins(APUSHL, &nod, Z); - gins(AWAIT, Z, Z); - gins(AFSTSW, Z, &nod); - gins(ASAHF, Z, Z); - gins(APOPL, Z, &nod); - } else { - gins(AWAIT, Z, Z); - gins(AFSTSW, Z, &nod); - gins(ASAHF, Z, Z); - regfree(&nod); - } - switch(o) { - case OEQ: a = AJEQ; break; - case ONE: a = AJNE; break; - case OLT: a = AJCS; break; - case OLE: a = AJLS; break; - case OGE: a = AJCC; break; - case OGT: a = AJHI; break; - } - gins(a, Z, Z); - return; - } - if(a == AGOK) - diag(Z, "bad in gopcode %O", o); - gins(a, f, t); -} - -void -gopcode(int o, Type *ty, Node *f, Node *t) -{ - int a, et; - - et = TLONG; - if(ty != T) - et = ty->etype; - if(typefd[et] && o != OADDR && o != OFUNC) { - diag(f, "gop: float %O", o); - return; - } - if(debug['M']) { - if(f != Z && f->type != T) - print("gop: %O %O[%s],", o, f->op, tnames[et]); - else - print("gop: %O Z,", o); - if(t != Z && t->type != T) - print("%O[%s]\n", t->op, tnames[t->type->etype]); - else - print("Z\n"); - } - a = AGOK; - switch(o) { - case OCOM: - a = ANOTL; - if(et == TCHAR || et == TUCHAR) - a = ANOTB; - if(et == TSHORT || et == TUSHORT) - a = ANOTW; - break; - - case ONEG: - a = ANEGL; - if(et == TCHAR || et == TUCHAR) - a = ANEGB; - if(et == TSHORT || et == TUSHORT) - a = ANEGW; - break; - - case OADDR: - a = ALEAL; - break; - - case OASADD: - case OADD: - a = AADDL; - if(et == TCHAR || et == TUCHAR) - a = AADDB; - if(et == TSHORT || et == TUSHORT) - a = AADDW; - break; - - case OASSUB: - case OSUB: - a = ASUBL; - if(et == TCHAR || et == TUCHAR) - a = ASUBB; - if(et == TSHORT || et == TUSHORT) - a = ASUBW; - break; - - case OASOR: - case OOR: - a = AORL; - if(et == TCHAR || et == TUCHAR) - a = AORB; - if(et == TSHORT || et == TUSHORT) - a = AORW; - break; - - case OASAND: - case OAND: - a = AANDL; - if(et == TCHAR || et == TUCHAR) - a = AANDB; - if(et == TSHORT || et == TUSHORT) - a = AANDW; - break; - - case OASXOR: - case OXOR: - a = AXORL; - if(et == TCHAR || et == TUCHAR) - a = AXORB; - if(et == TSHORT || et == TUSHORT) - a = AXORW; - break; - - case OASLSHR: - case OLSHR: - a = ASHRL; - if(et == TCHAR || et == TUCHAR) - a = ASHRB; - if(et == TSHORT || et == TUSHORT) - a = ASHRW; - break; - - case OASASHR: - case OASHR: - a = ASARL; - if(et == TCHAR || et == TUCHAR) - a = ASARB; - if(et == TSHORT || et == TUSHORT) - a = ASARW; - break; - - case OASASHL: - case OASHL: - a = ASALL; - if(et == TCHAR || et == TUCHAR) - a = ASALB; - if(et == TSHORT || et == TUSHORT) - a = ASALW; - break; - - case OROTL: - a = AROLL; - if(et == TCHAR || et == TUCHAR) - a = AROLB; - if(et == TSHORT || et == TUSHORT) - a = AROLW; - break; - - case OFUNC: - a = ACALL; - break; - - case OASMUL: - case OMUL: - if(f->op == OREGISTER && t != Z && isreg(t, D_AX) && reg[D_DX] == 0) - t = Z; - a = AIMULL; - break; - - case OASMOD: - case OMOD: - case OASDIV: - case ODIV: - a = AIDIVL; - break; - - case OASLMUL: - case OLMUL: - a = AMULL; - break; - - case OASLMOD: - case OLMOD: - case OASLDIV: - case OLDIV: - a = ADIVL; - break; - - case OEQ: - case ONE: - case OLT: - case OLE: - case OGE: - case OGT: - case OLO: - case OLS: - case OHS: - case OHI: - a = ACMPL; - if(et == TCHAR || et == TUCHAR) - a = ACMPB; - if(et == TSHORT || et == TUSHORT) - a = ACMPW; - gins(a, f, t); - switch(o) { - case OEQ: a = AJEQ; break; - case ONE: a = AJNE; break; - case OLT: a = AJLT; break; - case OLE: a = AJLE; break; - case OGE: a = AJGE; break; - case OGT: a = AJGT; break; - case OLO: a = AJCS; break; - case OLS: a = AJLS; break; - case OHS: a = AJCC; break; - case OHI: a = AJHI; break; - } - gins(a, Z, Z); - return; - } - if(a == AGOK) - diag(Z, "bad in gopcode %O", o); - gins(a, f, t); -} - -int -samaddr(Node *f, Node *t) -{ - - if(f->op != t->op) - return 0; - switch(f->op) { - - case OREGISTER: - if(f->reg != t->reg) - break; - return 1; - } - return 0; -} - -void -gbranch(int o) -{ - int a; - - a = AGOK; - switch(o) { - case ORETURN: - a = ARET; - break; - case OGOTO: - a = AJMP; - break; - } - nextpc(); - if(a == AGOK) { - diag(Z, "bad in gbranch %O", o); - nextpc(); - } - p->as = a; -} - -void -patch(Prog *op, int32 pc) -{ - op->to.offset = pc; - op->to.type = D_BRANCH; - op->to.u.branch = nil; - op->pcond = nil; -} - -void -gpseudo(int a, Sym *s, Node *n) -{ - - nextpc(); - p->as = a; - p->from.type = D_EXTERN; - p->from.sym = linksym(s); - - switch(a) { - case ATEXT: - p->from.scale = textflag; - textflag = 0; - break; - case AGLOBL: - p->from.scale = s->dataflag; - break; - } - - if(s->class == CSTATIC) - p->from.type = D_STATIC; - naddr(n, &p->to); - if(a == ADATA || a == AGLOBL) - pc--; -} - -void -gpcdata(int index, int value) -{ - Node n1; - - n1 = *nodconst(index); - gins(APCDATA, &n1, nodconst(value)); -} - -void -gprefetch(Node *n) -{ - Node n1; - - if(strcmp(getgo386(), "sse2") != 0) // assume no prefetch on old machines - return; - - regalloc(&n1, n, Z); - gmove(n, &n1); - n1.op = OINDREG; - gins(APREFETCHNTA, &n1, Z); - regfree(&n1); -} - -int -sconst(Node *n) -{ - int32 v; - - if(n->op == OCONST && !typefd[n->type->etype]) { - v = n->vconst; - if(v >= -32766L && v < 32766L) - return 1; - } - return 0; -} - -int32 -exreg(Type *t) -{ - int32 o; - - if(typechlp[t->etype]){ - if(exregoffset >= 32) - return 0; - o = exregoffset; - exregoffset += 4; - return o+1; // +1 to avoid 0 == failure; naddr case OEXREG will -1. - } - - return 0; -} - -schar ewidth[NTYPE] = -{ - -1, /*[TXXX]*/ - SZ_CHAR, /*[TCHAR]*/ - SZ_CHAR, /*[TUCHAR]*/ - SZ_SHORT, /*[TSHORT]*/ - SZ_SHORT, /*[TUSHORT]*/ - SZ_INT, /*[TINT]*/ - SZ_INT, /*[TUINT]*/ - SZ_LONG, /*[TLONG]*/ - SZ_LONG, /*[TULONG]*/ - SZ_VLONG, /*[TVLONG]*/ - SZ_VLONG, /*[TUVLONG]*/ - SZ_FLOAT, /*[TFLOAT]*/ - SZ_DOUBLE, /*[TDOUBLE]*/ - SZ_IND, /*[TIND]*/ - 0, /*[TFUNC]*/ - -1, /*[TARRAY]*/ - 0, /*[TVOID]*/ - -1, /*[TSTRUCT]*/ - -1, /*[TUNION]*/ - SZ_INT, /*[TENUM]*/ -}; -int32 ncast[NTYPE] = -{ - 0, /*[TXXX]*/ - BCHAR|BUCHAR, /*[TCHAR]*/ - BCHAR|BUCHAR, /*[TUCHAR]*/ - BSHORT|BUSHORT, /*[TSHORT]*/ - BSHORT|BUSHORT, /*[TUSHORT]*/ - BINT|BUINT|BLONG|BULONG|BIND, /*[TINT]*/ - BINT|BUINT|BLONG|BULONG|BIND, /*[TUINT]*/ - BINT|BUINT|BLONG|BULONG|BIND, /*[TLONG]*/ - BINT|BUINT|BLONG|BULONG|BIND, /*[TULONG]*/ - BVLONG|BUVLONG, /*[TVLONG]*/ - BVLONG|BUVLONG, /*[TUVLONG]*/ - BFLOAT, /*[TFLOAT]*/ - BDOUBLE, /*[TDOUBLE]*/ - BLONG|BULONG|BIND, /*[TIND]*/ - 0, /*[TFUNC]*/ - 0, /*[TARRAY]*/ - 0, /*[TVOID]*/ - BSTRUCT, /*[TSTRUCT]*/ - BUNION, /*[TUNION]*/ - 0, /*[TENUM]*/ -}; diff --git a/src/cmd/8g/reg.c b/src/cmd/8g/reg.c index 45aea2c33..13beaf941 100644 --- a/src/cmd/8g/reg.c +++ b/src/cmd/8g/reg.c @@ -936,7 +936,7 @@ paint1(Reg *r, int bn) Reg *r1; Prog *p; int z; - uint64 bb; + uint64 bb, rbz; z = bn/64; bb = 1LL<<(bn%64); @@ -955,7 +955,8 @@ paint1(Reg *r, int bn) r = r1; } - if(LOAD(r) & ~(r->set.b[z]&~(r->use1.b[z]|r->use2.b[z])) & bb) { + rbz = ~(r->set.b[z]&~(r->use1.b[z]|r->use2.b[z])); + if(LOAD(r) & rbz & bb) { change -= CLOAD * r->f.loop; } for(;;) { @@ -1066,7 +1067,7 @@ paint3(Reg *r, int bn, uint32 rb, int rn) Reg *r1; Prog *p; int z; - uint64 bb; + uint64 bb, rbz; z = bn/64; bb = 1LL << (bn%64); @@ -1085,7 +1086,8 @@ paint3(Reg *r, int bn, uint32 rb, int rn) r = r1; } - if(LOAD(r) & ~(r->set.b[z] & ~(r->use1.b[z]|r->use2.b[z])) & bb) + rbz = ~(r->set.b[z] & ~(r->use1.b[z]|r->use2.b[z])); + if(LOAD(r) & rbz & bb) addmove(r, bn, rn, 0); for(;;) { r->act.b[z] |= bb; diff --git a/src/cmd/9a/lex.c b/src/cmd/9a/lex.c index 26f21f743..e2945ef89 100644 --- a/src/cmd/9a/lex.c +++ b/src/cmd/9a/lex.c @@ -250,7 +250,7 @@ struct "R27", LREG, 27, "R28", LREG, 28, "R29", LREG, 29, - "R30", LREG, 30, + "g", LREG, 30, // avoid unintentionally clobbering g using R30 "R31", LREG, 31, "F", LF, 0, @@ -488,6 +488,7 @@ struct "SYSCALL", LNOP, ASYSCALL, "UNDEF", LNOP, AUNDEF, + "RET", LRETRN, ARETURN, "RETURN", LRETRN, ARETURN, "RFI", LRETRN, ARFI, "RFCI", LRETRN, ARFCI, diff --git a/src/cmd/9c/Makefile b/src/cmd/9c/Makefile deleted file mode 100644 index 3f528d751..000000000 --- a/src/cmd/9c/Makefile +++ /dev/null @@ -1,5 +0,0 @@ -# Copyright 2012 The Go Authors. All rights reserved. -# Use of this source code is governed by a BSD-style -# license that can be found in the LICENSE file. - -include ../../Make.dist diff --git a/src/cmd/9c/Notes b/src/cmd/9c/Notes deleted file mode 100644 index 92dd9deb3..000000000 --- a/src/cmd/9c/Notes +++ /dev/null @@ -1,14 +0,0 @@ -- effect of register expansion on 32-bit shifts and masks etc -9c -- multab -- floating-point conversions -- conversions of constants -- nodtype for loads -- sign-extension instruction (32-64) when in register? -- double indexing -- SLW (eg, in cat) -- scheduling - -9l -- D_QCONST, DWORD -- maskgen diff --git a/src/cmd/9c/cgen.c b/src/cmd/9c/cgen.c deleted file mode 100644 index bd1f7b28f..000000000 --- a/src/cmd/9c/cgen.c +++ /dev/null @@ -1,1147 +0,0 @@ -// cmd/9c/cgen.c from Vita Nuova. -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" -#include "../../runtime/funcdata.h" - -void -cgen(Node *n, Node *nn) -{ - Node *l, *r; - Prog *p1; - Node nod, nod1, nod2, nod3, nod4; - int o; - int32 v, curs; - - if(debug['g']) { - prtree(nn, "cgen lhs"); - prtree(n, "cgen"); - } - if(n == Z || n->type == T) - return; - if(typesu[n->type->etype] && (n->op != OFUNC || nn != Z)) { - sugen(n, nn, n->type->width); - return; - } - l = n->left; - r = n->right; - o = n->op; - if(n->addable >= INDEXED) { - if(nn == Z) { - switch(o) { - default: - nullwarn(Z, Z); - break; - case OINDEX: - nullwarn(l, r); - break; - } - return; - } - gmove(n, nn); - return; - } - curs = cursafe; - - if(n->complex >= FNX) - if(l->complex >= FNX) - if(r != Z && r->complex >= FNX) - switch(o) { - default: - regret(&nod, r, 0, 0); - cgen(r, &nod); - - regsalloc(&nod1, r); - gopcode(OAS, &nod, Z, &nod1); - - regfree(&nod); - nod = *n; - nod.right = &nod1; - cgen(&nod, nn); - return; - - case OFUNC: - case OCOMMA: - case OANDAND: - case OOROR: - case OCOND: - case ODOT: - break; - } - - switch(o) { - default: - diag(n, "unknown op in cgen: %O", o); - break; - - case OAS: - if(l->op == OBIT) - goto bitas; - if(l->addable >= INDEXED) { - if(nn != Z || r->addable < INDEXED) { - regalloc(&nod, r, nn); - cgen(r, &nod); - gmove(&nod, l); - regfree(&nod); - } else - gmove(r, l); - break; - } - if(l->complex >= r->complex) { - reglcgen(&nod1, l, Z); - if(r->addable >= INDEXED) { - gmove(r, &nod1); - if(nn != Z) - gmove(r, nn); - regfree(&nod1); - break; - } - regalloc(&nod, r, nn); - cgen(r, &nod); - } else { - regalloc(&nod, r, nn); - cgen(r, &nod); - reglcgen(&nod1, l, Z); - } - gmove(&nod, &nod1); - regfree(&nod); - regfree(&nod1); - break; - - bitas: - n = l->left; - regalloc(&nod, r, nn); - if(l->complex >= r->complex) { - reglcgen(&nod1, n, Z); - cgen(r, &nod); - } else { - cgen(r, &nod); - reglcgen(&nod1, n, Z); - } - regalloc(&nod2, n, Z); - gopcode(OAS, &nod1, Z, &nod2); - bitstore(l, &nod, &nod1, &nod2, nn); - break; - - case OBIT: - if(nn == Z) { - nullwarn(l, Z); - break; - } - bitload(n, &nod, Z, Z, nn); - gopcode(OAS, &nod, Z, nn); - regfree(&nod); - break; - - case OXOR: - if(nn != Z) - if(r->op == OCONST && r->vconst == -1){ - cgen(l, nn); - gopcode(OCOM, nn, Z, nn); - break; - } - - case OADD: - case OSUB: - case OAND: - case OOR: - case OLSHR: - case OASHL: - case OASHR: - /* - * immediate operands - */ - if(nn != Z && - r->op == OCONST && - !typefd[n->type->etype] && - immconst(r)) { - cgen(l, nn); - if(r->vconst == 0) - if(o != OAND) - break; - if(nn != Z) - gopcode(o, r, Z, nn); - break; - } - - case OMUL: - case OLMUL: - case OLDIV: - case OLMOD: - case ODIV: - case OMOD: - if(nn == Z) { - nullwarn(l, r); - break; - } - if(o == OMUL || o == OLMUL) { - if(mulcon(n, nn)) - break; - if(debug['M']) - print("%L multiply\n", n->lineno); - } - if(l->complex >= r->complex) { - regalloc(&nod, l, nn); - cgen(l, &nod); - regalloc(&nod1, l, Z); /* note: l used for type, so shifts work! */ - cgen(r, &nod1); - gopcode(o, &nod1, Z, &nod); - } else { - regalloc(&nod, l, nn); /* note: l used for type, so shifts work! */ - cgen(r, &nod); - regalloc(&nod1, l, Z); - cgen(l, &nod1); - gopcode(o, &nod, &nod1, &nod); - } - gopcode(OAS, &nod, Z, nn); - regfree(&nod); - regfree(&nod1); - break; - - case OASLSHR: - case OASASHL: - case OASASHR: - case OASAND: - case OASADD: - case OASSUB: - case OASXOR: - case OASOR: - if(l->op == OBIT) - goto asbitop; - if(r->op == OCONST && - !typefd[n->type->etype] && - immconst(r)) { - if(l->addable < INDEXED) - reglcgen(&nod2, l, Z); - else - nod2 = *l; - regalloc(&nod, l, nn); /* note: l used for type, so shifts work! */ - gopcode(OAS, &nod2, Z, &nod); - gopcode(o, r, Z, &nod); - gopcode(OAS, &nod, Z, &nod2); - - regfree(&nod); - if(l->addable < INDEXED) - regfree(&nod2); - break; - } - - case OASLMUL: - case OASLDIV: - case OASLMOD: - case OASMUL: - case OASDIV: - case OASMOD: - if(l->op == OBIT) - goto asbitop; - if(l->complex >= r->complex) { - if(l->addable < INDEXED) - reglcgen(&nod2, l, Z); - else - nod2 = *l; - regalloc(&nod, n, nn); - cgen(r, &nod); - } else { - regalloc(&nod, n, nn); - cgen(r, &nod); - if(l->addable < INDEXED) - reglcgen(&nod2, l, Z); - else - nod2 = *l; - } - regalloc(&nod1, n, Z); - gopcode(OAS, &nod2, Z, &nod1); - if(nod1.type->etype != nod.type->etype){ - regalloc(&nod3, &nod, Z); - gmove(&nod1, &nod3); - regfree(&nod1); - nod1 = nod3; - } - gopcode(o, &nod, &nod1, &nod); - gmove(&nod, &nod2); - if(nn != Z) - gmove(&nod, nn); - regfree(&nod); - regfree(&nod1); - if(l->addable < INDEXED) - regfree(&nod2); - break; - - asbitop: - regalloc(&nod4, n, nn); - regalloc(&nod3, r, Z); - if(l->complex >= r->complex) { - bitload(l, &nod, &nod1, &nod2, &nod4); - cgen(r, &nod3); - } else { - cgen(r, &nod3); - bitload(l, &nod, &nod1, &nod2, &nod4); - } - gmove(&nod, &nod4); - gopcode(n->op, &nod3, Z, &nod4); - regfree(&nod3); - gmove(&nod4, &nod); - regfree(&nod4); - bitstore(l, &nod, &nod1, &nod2, nn); - break; - - case OADDR: - if(nn == Z) { - nullwarn(l, Z); - break; - } - lcgen(l, nn); - break; - - case OFUNC: - if(l->complex >= FNX) { - if(l->op != OIND) - diag(n, "bad function call"); - - regret(&nod, l->left, 0, 0); - cgen(l->left, &nod); - regsalloc(&nod1, l->left); - gopcode(OAS, &nod, Z, &nod1); - regfree(&nod); - - nod = *n; - nod.left = &nod2; - nod2 = *l; - nod2.left = &nod1; - nod2.complex = 1; - cgen(&nod, nn); - - return; - } - if(REGARG >= 0) - o = reg[REGARG]; - gargs(r, &nod, &nod1); - if(l->addable < INDEXED) { - reglcgen(&nod, l, Z); - gopcode(OFUNC, Z, Z, &nod); - regfree(&nod); - } else - gopcode(OFUNC, Z, Z, l); - if(REGARG>=0) - if(o != reg[REGARG]) - reg[REGARG]--; - regret(&nod, n, l->type, 1); // update maxarg if nothing else - if(nn != Z) - gopcode(OAS, &nod, Z, nn); - if(nod.op == OREGISTER) - regfree(&nod); - break; - - case OIND: - if(nn == Z) { - cgen(l, nn); - break; - } - regialloc(&nod, n, nn); - r = l; - while(r->op == OADD) - r = r->right; - if(sconst(r)) { - v = r->vconst; - r->vconst = 0; - cgen(l, &nod); - nod.xoffset += v; - r->vconst = v; - } else - cgen(l, &nod); - regind(&nod, n); - gopcode(OAS, &nod, Z, nn); - regfree(&nod); - break; - - case OEQ: - case ONE: - case OLE: - case OLT: - case OGE: - case OGT: - case OLO: - case OLS: - case OHI: - case OHS: - if(nn == Z) { - nullwarn(l, r); - break; - } - boolgen(n, 1, nn); - break; - - case OANDAND: - case OOROR: - boolgen(n, 1, nn); - if(nn == Z) - patch(p, pc); - break; - - case ONOT: - if(nn == Z) { - nullwarn(l, Z); - break; - } - boolgen(n, 1, nn); - break; - - case OCOMMA: - cgen(l, Z); - cgen(r, nn); - break; - - case OCAST: - if(nn == Z) { - nullwarn(l, Z); - break; - } - /* - * convert from types l->n->nn - */ - if(nocast(l->type, n->type) && nocast(n->type, nn->type)) { - /* both null, gen l->nn */ - cgen(l, nn); - break; - } - regalloc(&nod, l, nn); - cgen(l, &nod); - regalloc(&nod1, n, &nod); - gopcode(OAS, &nod, Z, &nod1); - gopcode(OAS, &nod1, Z, nn); - regfree(&nod1); - regfree(&nod); - break; - - case ODOT: - sugen(l, nodrat, l->type->width); - if(nn != Z) { - warn(n, "non-interruptable temporary"); - nod = *nodrat; - if(!r || r->op != OCONST) { - diag(n, "DOT and no offset"); - break; - } - nod.xoffset += (int32)r->vconst; - nod.type = n->type; - cgen(&nod, nn); - } - break; - - case OCOND: - bcgen(l, 1); - p1 = p; - cgen(r->left, nn); - gbranch(OGOTO); - patch(p1, pc); - p1 = p; - cgen(r->right, nn); - patch(p1, pc); - break; - - case OPOSTINC: - case OPOSTDEC: - v = 1; - if(l->type->etype == TIND) - v = l->type->link->width; - if(o == OPOSTDEC) - v = -v; - if(l->op == OBIT) - goto bitinc; - if(nn == Z) - goto pre; - - if(l->addable < INDEXED) - reglcgen(&nod2, l, Z); - else - nod2 = *l; - - regalloc(&nod, l, nn); - gopcode(OAS, &nod2, Z, &nod); - regalloc(&nod1, l, Z); - if(typefd[l->type->etype]) { - regalloc(&nod3, l, Z); - if(v < 0) { - gopcode(OAS, nodfconst(-v), Z, &nod3); - gopcode(OSUB, &nod3, &nod, &nod1); - } else { - gopcode(OAS, nodfconst(v), Z, &nod3); - gopcode(OADD, &nod3, &nod, &nod1); - } - regfree(&nod3); - } else - gopcode(OADD, nodconst(v), &nod, &nod1); - gopcode(OAS, &nod1, Z, &nod2); - - regfree(&nod); - regfree(&nod1); - if(l->addable < INDEXED) - regfree(&nod2); - break; - - case OPREINC: - case OPREDEC: - v = 1; - if(l->type->etype == TIND) - v = l->type->link->width; - if(o == OPREDEC) - v = -v; - if(l->op == OBIT) - goto bitinc; - - pre: - if(l->addable < INDEXED) - reglcgen(&nod2, l, Z); - else - nod2 = *l; - - regalloc(&nod, l, nn); - gopcode(OAS, &nod2, Z, &nod); - if(typefd[l->type->etype]) { - regalloc(&nod3, l, Z); - if(v < 0) { - gopcode(OAS, nodfconst(-v), Z, &nod3); - gopcode(OSUB, &nod3, Z, &nod); - } else { - gopcode(OAS, nodfconst(v), Z, &nod3); - gopcode(OADD, &nod3, Z, &nod); - } - regfree(&nod3); - } else - gopcode(OADD, nodconst(v), Z, &nod); - gopcode(OAS, &nod, Z, &nod2); - if(nn && l->op == ONAME) /* in x=++i, emit USED(i) */ - gins(ANOP, l, Z); - - regfree(&nod); - if(l->addable < INDEXED) - regfree(&nod2); - break; - - bitinc: - if(nn != Z && (o == OPOSTINC || o == OPOSTDEC)) { - bitload(l, &nod, &nod1, &nod2, Z); - gopcode(OAS, &nod, Z, nn); - gopcode(OADD, nodconst(v), Z, &nod); - bitstore(l, &nod, &nod1, &nod2, Z); - break; - } - bitload(l, &nod, &nod1, &nod2, nn); - gopcode(OADD, nodconst(v), Z, &nod); - bitstore(l, &nod, &nod1, &nod2, nn); - break; - } - cursafe = curs; -} - -void -reglcgen(Node *t, Node *n, Node *nn) -{ - Node *r; - int32 v; - - regialloc(t, n, nn); - if(n->op == OIND) { - r = n->left; - while(r->op == OADD) - r = r->right; - if(sconst(r)) { - v = r->vconst; - r->vconst = 0; - lcgen(n, t); - t->xoffset += v; - r->vconst = v; - regind(t, n); - return; - } - } - lcgen(n, t); - regind(t, n); -} - -void -lcgen(Node *n, Node *nn) -{ - Prog *p1; - Node nod; - - if(debug['g']) { - prtree(nn, "lcgen lhs"); - prtree(n, "lcgen"); - } - if(n == Z || n->type == T) - return; - if(nn == Z) { - nn = &nod; - regalloc(&nod, n, Z); - } - switch(n->op) { - default: - if(n->addable < INDEXED) { - diag(n, "unknown op in lcgen: %O", n->op); - break; - } - nod = *n; - nod.op = OADDR; - nod.left = n; - nod.right = Z; - nod.type = types[TIND]; - gopcode(OAS, &nod, Z, nn); - break; - - case OCOMMA: - cgen(n->left, n->left); - lcgen(n->right, nn); - break; - - case OIND: - cgen(n->left, nn); - break; - - case OCOND: - bcgen(n->left, 1); - p1 = p; - lcgen(n->right->left, nn); - gbranch(OGOTO); - patch(p1, pc); - p1 = p; - lcgen(n->right->right, nn); - patch(p1, pc); - break; - } -} - -void -bcgen(Node *n, int true) -{ - - if(n->type == T) - gbranch(OGOTO); - else - boolgen(n, true, Z); -} - -void -boolgen(Node *n, int true, Node *nn) -{ - int o; - Prog *p1, *p2; - Node *l, *r, nod, nod1; - int32 curs; - - if(debug['g']) { - prtree(nn, "boolgen lhs"); - prtree(n, "boolgen"); - } - curs = cursafe; - l = n->left; - r = n->right; - switch(n->op) { - - default: - if(n->op == OCONST) { - o = vconst(n); - if(!true) - o = !o; - gbranch(OGOTO); - if(o) { - p1 = p; - gbranch(OGOTO); - patch(p1, pc); - } - goto com; - } - regalloc(&nod, n, nn); - cgen(n, &nod); - o = ONE; - if(true) - o = comrel[relindex(o)]; - if(typefd[n->type->etype]) { - nodreg(&nod1, n, NREG+FREGZERO); - gopcode(o, &nod, Z, &nod1); - } else - gopcode(o, &nod, Z, nodconst(0)); - regfree(&nod); - goto com; - - case OCOMMA: - cgen(l, Z); - boolgen(r, true, nn); - break; - - case ONOT: - boolgen(l, !true, nn); - break; - - case OCOND: - bcgen(l, 1); - p1 = p; - bcgen(r->left, true); - p2 = p; - gbranch(OGOTO); - patch(p1, pc); - p1 = p; - bcgen(r->right, !true); - patch(p2, pc); - p2 = p; - gbranch(OGOTO); - patch(p1, pc); - patch(p2, pc); - goto com; - - case OANDAND: - if(!true) - goto caseor; - - caseand: - bcgen(l, true); - p1 = p; - bcgen(r, !true); - p2 = p; - patch(p1, pc); - gbranch(OGOTO); - patch(p2, pc); - goto com; - - case OOROR: - if(!true) - goto caseand; - - caseor: - bcgen(l, !true); - p1 = p; - bcgen(r, !true); - p2 = p; - gbranch(OGOTO); - patch(p1, pc); - patch(p2, pc); - goto com; - - case OEQ: - case ONE: - case OLE: - case OLT: - case OGE: - case OGT: - case OHI: - case OHS: - case OLO: - case OLS: - o = n->op; - if(true) - o = comrel[relindex(o)]; - if(l->complex >= FNX && r->complex >= FNX) { - regret(&nod, r, 0, 0); - cgen(r, &nod); - regsalloc(&nod1, r); - gopcode(OAS, &nod, Z, &nod1); - regfree(&nod); - nod = *n; - nod.right = &nod1; - boolgen(&nod, true, nn); - break; - } - if(sconst(r)) { - regalloc(&nod, l, nn); - cgen(l, &nod); - gopcode(o, &nod, Z, r); - regfree(&nod); - goto com; - } - if(l->complex >= r->complex) { - regalloc(&nod1, l, nn); - cgen(l, &nod1); - regalloc(&nod, r, Z); - cgen(r, &nod); - } else { - regalloc(&nod, r, nn); - cgen(r, &nod); - regalloc(&nod1, l, Z); - cgen(l, &nod1); - } - gopcode(o, &nod1, Z, &nod); - regfree(&nod); - regfree(&nod1); - - com: - if(nn != Z) { - p1 = p; - gopcode(OAS, nodconst(1L), Z, nn); - gbranch(OGOTO); - p2 = p; - patch(p1, pc); - gopcode(OAS, nodconst(0L), Z, nn); - patch(p2, pc); - } - break; - } - cursafe = curs; -} - -void -sugen(Node *n, Node *nn, int32 w) -{ - Prog *p1; - Node nod0, nod1, nod2, nod3, nod4, *l, *r; - Type *t; - int32 pc1; - int i, m, c; - - if(n == Z || n->type == T) - return; - if(debug['g']) { - prtree(nn, "sugen lhs"); - prtree(n, "sugen"); - } - if(nn == nodrat) - if(w > nrathole) - nrathole = w; - switch(n->op) { - case OIND: - if(nn == Z) { - nullwarn(n->left, Z); - break; - } - - default: - goto copy; - - case OCONST: - if(n->type && typev[n->type->etype]) { - if(nn == Z) { - nullwarn(n->left, Z); - break; - } - - t = nn->type; - nn->type = types[TLONG]; - reglcgen(&nod1, nn, Z); - nn->type = t; - - if(align(0, types[TCHAR], Aarg1, nil)) /* isbigendian */ - gopcode(OAS, nod32const(n->vconst>>32), Z, &nod1); - else - gopcode(OAS, nod32const(n->vconst), Z, &nod1); - nod1.xoffset += SZ_LONG; - if(align(0, types[TCHAR], Aarg1, nil)) /* isbigendian */ - gopcode(OAS, nod32const(n->vconst), Z, &nod1); - else - gopcode(OAS, nod32const(n->vconst>>32), Z, &nod1); - - regfree(&nod1); - break; - } - goto copy; - - case ODOT: - l = n->left; - sugen(l, nodrat, l->type->width); - if(nn != Z) { - warn(n, "non-interruptable temporary"); - nod1 = *nodrat; - r = n->right; - if(!r || r->op != OCONST) { - diag(n, "DOT and no offset"); - break; - } - nod1.xoffset += (int32)r->vconst; - nod1.type = n->type; - sugen(&nod1, nn, w); - } - break; - - case OSTRUCT: - /* - * rewrite so lhs has no side effects - */ - if(nn != Z && side(nn)) { - nod1 = *n; - nod1.type = typ(TIND, n->type); - regalloc(&nod2, &nod1, Z); - lcgen(nn, &nod2); - regsalloc(&nod0, &nod1); - gopcode(OAS, &nod2, Z, &nod0); - regfree(&nod2); - - nod1 = *n; - nod1.op = OIND; - nod1.left = &nod0; - nod1.right = Z; - nod1.complex = 1; - - sugen(n, &nod1, w); - return; - } - - r = n->left; - for(t = n->type->link; t != T; t = t->down) { - l = r; - if(r->op == OLIST) { - l = r->left; - r = r->right; - } - if(nn == Z) { - cgen(l, nn); - continue; - } - /* - * hand craft *(&nn + o) = l - */ - nod0 = znode; - nod0.op = OAS; - nod0.type = t; - nod0.left = &nod1; - nod0.right = l; - - nod1 = znode; - nod1.op = OIND; - nod1.type = t; - nod1.left = &nod2; - - nod2 = znode; - nod2.op = OADD; - nod2.type = typ(TIND, t); - nod2.left = &nod3; - nod2.right = &nod4; - - nod3 = znode; - nod3.op = OADDR; - nod3.type = nod2.type; - nod3.left = nn; - - nod4 = znode; - nod4.op = OCONST; - nod4.type = nod2.type; - nod4.vconst = t->offset; - - ccom(&nod0); - acom(&nod0); - xcom(&nod0); - nod0.addable = 0; - - /* prtree(&nod0, "hand craft"); /* */ - cgen(&nod0, Z); - } - break; - - case OAS: - if(nn == Z) { - if(n->addable < INDEXED) - sugen(n->right, n->left, w); - break; - } - /* BOTCH -- functions can clobber rathole */ - sugen(n->right, nodrat, w); - warn(n, "non-interruptable temporary"); - sugen(nodrat, n->left, w); - sugen(nodrat, nn, w); - break; - - case OFUNC: - if(!hasdotdotdot(n->left->type)) { - cgen(n, Z); - if(nn != Z) { - curarg -= n->type->width; - regret(&nod1, n, n->left->type, 1); - if(nn->complex >= FNX) { - regsalloc(&nod2, n); - cgen(&nod1, &nod2); - nod1 = nod2; - } - cgen(&nod1, nn); - } - break; - } - if(nn == Z) { - sugen(n, nodrat, w); - break; - } - if(nn->op != OIND) { - nn = new1(OADDR, nn, Z); - nn->type = types[TIND]; - nn->addable = 0; - } else - nn = nn->left; - n = new(OFUNC, n->left, new(OLIST, nn, n->right)); - n->type = types[TVOID]; - n->left->type = types[TVOID]; - cgen(n, Z); - break; - - case OCOND: - bcgen(n->left, 1); - p1 = p; - sugen(n->right->left, nn, w); - gbranch(OGOTO); - patch(p1, pc); - p1 = p; - sugen(n->right->right, nn, w); - patch(p1, pc); - break; - - case OCOMMA: - cgen(n->left, Z); - sugen(n->right, nn, w); - break; - } - return; - -copy: - if(nn == Z) - return; - if(n->complex >= FNX && nn->complex >= FNX) { - t = nn->type; - nn->type = types[TLONG]; - regialloc(&nod1, nn, Z); - lcgen(nn, &nod1); - regsalloc(&nod2, nn); - nn->type = t; - - gopcode(OAS, &nod1, Z, &nod2); - regfree(&nod1); - - nod2.type = typ(TIND, t); - - nod1 = nod2; - nod1.op = OIND; - nod1.left = &nod2; - nod1.right = Z; - nod1.complex = 1; - nod1.type = t; - - sugen(n, &nod1, w); - return; - } - - if(n->complex > nn->complex) { - t = n->type; - n->type = types[TLONG]; - reglcgen(&nod1, n, Z); - n->type = t; - - t = nn->type; - nn->type = types[TLONG]; - reglcgen(&nod2, nn, Z); - nn->type = t; - } else { - t = nn->type; - nn->type = types[TLONG]; - reglcgen(&nod2, nn, Z); - nn->type = t; - - t = n->type; - n->type = types[TLONG]; - reglcgen(&nod1, n, Z); - n->type = t; - } - - w /= SZ_LONG; - if(w <= 5) { - layout(&nod1, &nod2, w, 0, Z); - goto out; - } - - /* - * minimize space for unrolling loop - * 3,4,5 times. (6 or more is never minimum) - * if small structure, try 2 also. - */ - c = 0; /* set */ - m = 100; - i = 3; - if(w <= 15) - i = 2; - for(; i<=5; i++) - if(i + w%i <= m) { - c = i; - m = c + w%c; - } - - regalloc(&nod3, ®node, Z); - layout(&nod1, &nod2, w%c, w/c, &nod3); - - pc1 = pc; - layout(&nod1, &nod2, c, 0, Z); - - gopcode(OSUB, nodconst(1L), Z, &nod3); - nod1.op = OREGISTER; - gopcode(OADD, nodconst(c*SZ_LONG), Z, &nod1); - nod2.op = OREGISTER; - gopcode(OADD, nodconst(c*SZ_LONG), Z, &nod2); - - gopcode(OGT, &nod3, Z, nodconst(0)); - patch(p, pc1); - - regfree(&nod3); -out: - regfree(&nod1); - regfree(&nod2); -} - -void -layout(Node *f, Node *t, int c, int cv, Node *cn) -{ - Node t1, t2; - - while(c > 3) { - layout(f, t, 2, 0, Z); - c -= 2; - } - - regalloc(&t1, ®node, Z); - regalloc(&t2, ®node, Z); - if(c > 0) { - gopcode(OAS, f, Z, &t1); - f->xoffset += SZ_LONG; - } - if(cn != Z) - gopcode(OAS, nodconst(cv), Z, cn); - if(c > 1) { - gopcode(OAS, f, Z, &t2); - f->xoffset += SZ_LONG; - } - if(c > 0) { - gopcode(OAS, &t1, Z, t); - t->xoffset += SZ_LONG; - } - if(c > 2) { - gopcode(OAS, f, Z, &t1); - f->xoffset += SZ_LONG; - } - if(c > 1) { - gopcode(OAS, &t2, Z, t); - t->xoffset += SZ_LONG; - } - if(c > 2) { - gopcode(OAS, &t1, Z, t); - t->xoffset += SZ_LONG; - } - regfree(&t1); - regfree(&t2); -} diff --git a/src/cmd/9c/doc.go b/src/cmd/9c/doc.go deleted file mode 100644 index 6c9b4762d..000000000 --- a/src/cmd/9c/doc.go +++ /dev/null @@ -1,17 +0,0 @@ -// Copyright 2009 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build ignore - -/* - -9c is a version of the Plan 9 C compiler. The original is documented at - - http://plan9.bell-labs.com/magic/man2html/1/8c - -Its target architecture is the Power64, referred to by these tools as -power64 (big endian) or power64le (little endian). - -*/ -package main diff --git a/src/cmd/9c/gc.h b/src/cmd/9c/gc.h deleted file mode 100644 index fbe5099fe..000000000 --- a/src/cmd/9c/gc.h +++ /dev/null @@ -1,350 +0,0 @@ -// cmd/9c/gc.h from Vita Nuova. -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <u.h> -#include "../cc/cc.h" -#include "../9l/9.out.h" - -/* - * 9c/powerpc64 - */ -#define SZ_CHAR 1 -#define SZ_SHORT 2 -#define SZ_INT 4 -#define SZ_LONG 4 -#define SZ_IND 8 -#define SZ_FLOAT 4 -#define SZ_VLONG 8 -#define SZ_DOUBLE 8 -#define FNX 100 - -typedef struct Case Case; -typedef struct C1 C1; -typedef struct Multab Multab; -typedef struct Hintab Hintab; -typedef struct Reg Reg; -typedef struct Rgn Rgn; - -#define A ((Adr*)0) - -#define INDEXED 9 -#define P ((Prog*)0) - -struct Case -{ - Case* link; - vlong val; - int32 label; - char def; - char isv; -}; -#define C ((Case*)0) - -struct C1 -{ - vlong val; - int32 label; -}; - -struct Multab -{ - int32 val; - char code[20]; -}; - -struct Hintab -{ - ushort val; - char hint[10]; -}; - -struct Reg -{ - int32 pc; - int32 rpo; /* reverse post ordering */ - - Bits set; - Bits use1; - Bits use2; - - Bits refbehind; - Bits refahead; - Bits calbehind; - Bits calahead; - Bits regdiff; - Bits act; - - int32 regu; - int32 loop; /* could be shorter */ - - union - { - Reg* log5; - int32 active; - }; - Reg* p1; - Reg* p2; - Reg* p2link; - Reg* s1; - Reg* s2; - Reg* link; - Prog* prog; -}; -#define R ((Reg*)0) - -#define NRGN 600 -struct Rgn -{ - Reg* enter; - short cost; - short varno; - short regno; -}; - -EXTERN int32 breakpc; -EXTERN int32 nbreak; -EXTERN Case* cases; -EXTERN Node constnode; -EXTERN Node fconstnode; -EXTERN Node vconstnode; -EXTERN int32 continpc; -EXTERN int32 curarg; -EXTERN int32 cursafe; -EXTERN Prog* lastp; -extern int hintabsize; -EXTERN int32 maxargsafe; -EXTERN Multab multab[20]; -EXTERN int mnstring; -EXTERN Node* nodrat; -EXTERN Node* nodret; -EXTERN Node* nodsafe; -EXTERN int32 nrathole; -EXTERN int32 nstring; -EXTERN Prog* p; -EXTERN int32 pc; -EXTERN Node regnode; -EXTERN Node qregnode; -EXTERN char string[NSNAME]; -EXTERN Sym* symrathole; -EXTERN Node znode; -EXTERN Prog zprog; -EXTERN int reg[NREG+NREG]; -EXTERN int32 exregoffset; -EXTERN int32 exfregoffset; -EXTERN uchar typechlpv[NTYPE]; - -#define BLOAD(r) band(bnot(r->refbehind), r->refahead) -#define BSTORE(r) band(bnot(r->calbehind), r->calahead) -#define LOAD(r) (~r->refbehind.b[z] & r->refahead.b[z]) -#define STORE(r) (~r->calbehind.b[z] & r->calahead.b[z]) - -#define bset(a,n) ((a).b[(n)/32]&(1L<<(n)%32)) - -#define CLOAD 5 -#define CREF 5 -#define CINF 1000 -#define LOOP 3 - -EXTERN Rgn region[NRGN]; -EXTERN Rgn* rgp; -EXTERN int nregion; -EXTERN int nvar; - -EXTERN Bits externs; -EXTERN Bits params; -EXTERN Bits consts; -EXTERN Bits addrs; - -EXTERN int32 regbits; -EXTERN int32 exregbits; - -EXTERN int change; -EXTERN int suppress; - -EXTERN Reg* firstr; -EXTERN Reg* lastr; -EXTERN Reg zreg; -EXTERN Reg* freer; -EXTERN Var var[NVAR]; -EXTERN int32* idom; -EXTERN Reg** rpo2r; -EXTERN int32 maxnr; - -#define R0ISZERO (debug['0']==0) - -extern char* anames[]; -extern Hintab hintab[]; - -/* - * sgen.c - */ -void codgen(Node*, Node*); -void gen(Node*); -void usedset(Node*, int); -void noretval(int); -void xcom(Node*); -int bcomplex(Node*, Node*); -Prog* gtext(Sym*, int32); -vlong argsize(int); - -/* - * cgen.c - */ -void cgen(Node*, Node*); -void reglcgen(Node*, Node*, Node*); -void lcgen(Node*, Node*); -void bcgen(Node*, int); -void boolgen(Node*, int, Node*); -void sugen(Node*, Node*, int32); -void layout(Node*, Node*, int, int, Node*); - -/* - * txt.c - */ -void ginit(void); -void gclean(void); -void nextpc(void); -void gargs(Node*, Node*, Node*); -void garg1(Node*, Node*, Node*, int, Node**); -Node* nodconst(int32); -Node* nod32const(vlong); -Node* nodfconst(double); -Node* nodgconst(vlong v, Type *t); -void nodreg(Node*, Node*, int); -void regret(Node*, Node*, Type*, int); -void regalloc(Node*, Node*, Node*); -void regfree(Node*); -void regialloc(Node*, Node*, Node*); -void regsalloc(Node*, Node*); -void regaalloc1(Node*, Node*); -void regaalloc(Node*, Node*); -void regind(Node*, Node*); -void gprep(Node*, Node*); -void raddr(Node*, Prog*); -void naddr(Node*, Addr*); -void gmove(Node*, Node*); -void gins(int a, Node*, Node*); -void gopcode(int, Node*, Node*, Node*); -int samaddr(Node*, Node*); -void gbranch(int); -int immconst(Node*); -void patch(Prog*, int32); -int sconst(Node*); -int sval(int32); -int uconst(Node*); -void gpseudo(int, Sym*, Node*); -void gprefetch(Node*); -void gpcdata(int, int); - -/* - * swt.c - */ -int swcmp(const void*, const void*); -void doswit(Node*); -void swit1(C1*, int, int32, Node*); -void swit2(C1*, int, int32, Node*, Node*); -void newcase(void); -void bitload(Node*, Node*, Node*, Node*, Node*); -void bitstore(Node*, Node*, Node*, Node*, Node*); -int32 outstring(char*, int32); -int mulcon(Node*, Node*); -Multab* mulcon0(Node*, int32); -int mulcon1(Node*, int32, Node*); -void nullwarn(Node*, Node*); -void sextern(Sym*, Node*, int32, int32); -void gextern(Sym*, Node*, int32, int32); -void outcode(void); - -/* - * list - */ -void listinit(void); -int Pconv(Fmt*); -int Aconv(Fmt*); -int Dconv(Fmt*); -int Sconv(Fmt*); -int Nconv(Fmt*); -int Bconv(Fmt*); - -/* - * reg.c - */ -Reg* rega(void); -int rcmp(const void*, const void*); -void regopt(Prog*); -void addmove(Reg*, int, int, int); -Bits mkvar(Addr*, int); -void prop(Reg*, Bits, Bits); -void loopit(Reg*, int32); -void synch(Reg*, Bits); -uint32 allreg(uint32, Rgn*); -void paint1(Reg*, int); -uint32 paint2(Reg*, int); -void paint3(Reg*, int, int32, int); -void addreg(Addr*, int); - -/* - * peep.c - */ -void peep(void); -void excise(Reg*); -Reg* uniqp(Reg*); -Reg* uniqs(Reg*); -int regtyp(Addr*); -int regzer(Addr*); -int anyvar(Addr*); -int subprop(Reg*); -int copyprop(Reg*); -int copy1(Addr*, Addr*, Reg*, int); -int copyu(Prog*, Addr*, Addr*); - -int copyas(Addr*, Addr*); -int copyau(Addr*, Addr*); -int copyau1(Prog*, Addr*); -int copysub(Addr*, Addr*, Addr*, int); -int copysub1(Prog*, Addr*, Addr*, int); - -int32 RtoB(int); -int32 FtoB(int); -int BtoR(int32); -int BtoF(int32); - -/* - * com64.c - */ -int com64(Node*); -void com64init(void); -void bool64(Node*); - -#pragma varargck type "A" int -#pragma varargck type "B" Bits -#pragma varargck type "D" Addr* -#pragma varargck type "N" Addr* -#pragma varargck type "P" Prog* -#pragma varargck type "S" char* diff --git a/src/cmd/9c/list.c b/src/cmd/9c/list.c deleted file mode 100644 index 5cfc442cb..000000000 --- a/src/cmd/9c/list.c +++ /dev/null @@ -1,37 +0,0 @@ -// cmd/9c/list.c from Vita Nuova. -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#define EXTERN -#include "gc.h" - -void -listinit(void) -{ - listinit9(); -} diff --git a/src/cmd/9c/machcap.c b/src/cmd/9c/machcap.c deleted file mode 100644 index af44bc820..000000000 --- a/src/cmd/9c/machcap.c +++ /dev/null @@ -1,105 +0,0 @@ -// cmd/9c/machcap.c from Vita Nuova. -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -int -machcap(Node *n) -{ - - if(n == Z) - return 1; /* test */ - - switch(n->op) { - case OMUL: - case OLMUL: - case OASMUL: - case OASLMUL: - if(typechlv[n->type->etype]) - return 1; - break; - - case OADD: - case OAND: - case OOR: - case OSUB: - case OXOR: - case OASHL: - case OLSHR: - case OASHR: - if(typechlv[n->left->type->etype]) - return 1; - break; - - case OCAST: - return 1; - - case OCOND: - case OCOMMA: - case OLIST: - case OANDAND: - case OOROR: - case ONOT: - return 1; - - case OASADD: - case OASSUB: - case OASAND: - case OASOR: - case OASXOR: - return 1; - - case OASASHL: - case OASASHR: - case OASLSHR: - return 1; - - case OPOSTINC: - case OPOSTDEC: - case OPREINC: - case OPREDEC: - return 1; - - case OEQ: - case ONE: - case OLE: - case OGT: - case OLT: - case OGE: - case OHI: - case OHS: - case OLO: - case OLS: - return 1; - case ONEG: - case OCOM: - break; - } - return 0; -} diff --git a/src/cmd/9c/mul.c b/src/cmd/9c/mul.c deleted file mode 100644 index 353376f15..000000000 --- a/src/cmd/9c/mul.c +++ /dev/null @@ -1,638 +0,0 @@ -// cmd/9c/mul.c from Vita Nuova. -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -/* - * code sequences for multiply by constant. - * [a-l][0-3] - * lsl $(A-'a'),r0,r1 - * [+][0-7] - * add r0,r1,r2 - * [-][0-7] - * sub r0,r1,r2 - */ - -static int multabp; -static int32 mulval; -static char* mulcp; -static int32 valmax; -static int shmax; - -static int docode(char *hp, char *cp, int r0, int r1); -static int gen1(int len); -static int gen2(int len, int32 r1); -static int gen3(int len, int32 r0, int32 r1, int flag); -enum -{ - SR1 = 1<<0, /* r1 has been shifted */ - SR0 = 1<<1, /* r0 has been shifted */ - UR1 = 1<<2, /* r1 has not been used */ - UR0 = 1<<3, /* r0 has not been used */ -}; - -Multab* -mulcon0(Node *n, int32 v) -{ - int a1, a2, g; - Multab *m, *m1; - char hint[10]; - - if(v < 0) - v = -v; - - /* - * look in cache - */ - m = multab; - for(g=0; g<nelem(multab); g++) { - if(m->val == v) { - if(m->code[0] == 0) - return 0; - return m; - } - m++; - } - - /* - * select a spot in cache to overwrite - */ - multabp++; - if(multabp < 0 || multabp >= nelem(multab)) - multabp = 0; - m = multab+multabp; - m->val = v; - mulval = v; - - /* - * look in execption hint table - */ - a1 = 0; - a2 = hintabsize; - for(;;) { - if(a1 >= a2) - goto no; - g = (a2 + a1)/2; - if(v < hintab[g].val) { - a2 = g; - continue; - } - if(v > hintab[g].val) { - a1 = g+1; - continue; - } - break; - } - - if(docode(hintab[g].hint, m->code, 1, 0)) - return m; - print("%L: multiply table failure %ld\n", n->lineno, v); - m->code[0] = 0; - return 0; - -no: - /* - * try to search - */ - hint[0] = 0; - for(g=1; g<=6; g++) { - if(g >= 6 && v >= 65535) - break; - mulcp = hint+g; - *mulcp = 0; - if(gen1(g)) { - if(docode(hint, m->code, 1, 0)) - return m; - print("%L: multiply table failure (g=%d h=%s) %ld\n", - n->lineno, g, hint, v); - break; - } - } - - /* - * try a recur followed by a shift - */ - g = 0; - while(!(v & 1)) { - g++; - v >>= 1; - } - if(g) { - m1 = mulcon0(n, v); - if(m1) { - strcpy(m->code, m1->code); - sprint(strchr(m->code, 0), "%c0", g+'a'); - return m; - } - } - m->code[0] = 0; - return 0; -} - -static int -docode(char *hp, char *cp, int r0, int r1) -{ - int c, i; - - c = *hp++; - *cp = c; - cp += 2; - switch(c) { - default: - c -= 'a'; - if(c < 1 || c >= 30) - break; - for(i=0; i<4; i++) { - switch(i) { - case 0: - if(docode(hp, cp, r0<<c, r1)) - goto out; - break; - case 1: - if(docode(hp, cp, r1<<c, r1)) - goto out; - break; - case 2: - if(docode(hp, cp, r0, r0<<c)) - goto out; - break; - case 3: - if(docode(hp, cp, r0, r1<<c)) - goto out; - break; - } - } - break; - - case '+': - for(i=0; i<8; i++) { - cp[-1] = i+'0'; - switch(i) { - case 1: - if(docode(hp, cp, r0+r1, r1)) - goto out; - break; - case 5: - if(docode(hp, cp, r0, r0+r1)) - goto out; - break; - } - } - break; - - case '-': - for(i=0; i<8; i++) { - cp[-1] = i+'0'; - switch(i) { - case 1: - if(docode(hp, cp, r0-r1, r1)) - goto out; - break; - case 2: - if(docode(hp, cp, r1-r0, r1)) - goto out; - break; - case 5: - if(docode(hp, cp, r0, r0-r1)) - goto out; - break; - case 6: - if(docode(hp, cp, r0, r1-r0)) - goto out; - break; - } - } - break; - - case 0: - if(r0 == mulval) - return 1; - } - return 0; - -out: - cp[-1] = i+'0'; - return 1; -} - -static int -gen1(int len) -{ - int i; - - for(shmax=1; shmax<30; shmax++) { - valmax = 1<<shmax; - if(valmax >= mulval) - break; - } - if(mulval == 1) - return 1; - - len--; - for(i=1; i<=shmax; i++) - if(gen2(len, 1<<i)) { - *--mulcp = 'a'+i; - return 1; - } - return 0; -} - -static int -gen2(int len, int32 r1) -{ - int i; - - if(len <= 0) { - if(r1 == mulval) - return 1; - return 0; - } - - len--; - if(len == 0) - goto calcr0; - - if(gen3(len, r1, r1+1, UR1)) { - i = '+'; - goto out; - } - if(gen3(len, r1-1, r1, UR0)) { - i = '-'; - goto out; - } - if(gen3(len, 1, r1+1, UR1)) { - i = '+'; - goto out; - } - if(gen3(len, 1, r1-1, UR1)) { - i = '-'; - goto out; - } - - return 0; - -calcr0: - if(mulval == r1+1) { - i = '+'; - goto out; - } - if(mulval == r1-1) { - i = '-'; - goto out; - } - return 0; - -out: - *--mulcp = i; - return 1; -} - -static int -gen3(int len, int32 r0, int32 r1, int flag) -{ - int i, f1, f2; - int32 x; - - if(r0 <= 0 || - r0 >= r1 || - r1 > valmax) - return 0; - - len--; - if(len == 0) - goto calcr0; - - if(!(flag & UR1)) { - f1 = UR1|SR1; - for(i=1; i<=shmax; i++) { - x = r0<<i; - if(x > valmax) - break; - if(gen3(len, r0, x, f1)) { - i += 'a'; - goto out; - } - } - } - - if(!(flag & UR0)) { - f1 = UR1|SR1; - for(i=1; i<=shmax; i++) { - x = r1<<i; - if(x > valmax) - break; - if(gen3(len, r1, x, f1)) { - i += 'a'; - goto out; - } - } - } - - if(!(flag & SR1)) { - f1 = UR1|SR1|(flag&UR0); - for(i=1; i<=shmax; i++) { - x = r1<<i; - if(x > valmax) - break; - if(gen3(len, r0, x, f1)) { - i += 'a'; - goto out; - } - } - } - - if(!(flag & SR0)) { - f1 = UR0|SR0|(flag&(SR1|UR1)); - - f2 = UR1|SR1; - if(flag & UR1) - f2 |= UR0; - if(flag & SR1) - f2 |= SR0; - - for(i=1; i<=shmax; i++) { - x = r0<<i; - if(x > valmax) - break; - if(x > r1) { - if(gen3(len, r1, x, f2)) { - i += 'a'; - goto out; - } - } else - if(gen3(len, x, r1, f1)) { - i += 'a'; - goto out; - } - } - } - - x = r1+r0; - if(gen3(len, r0, x, UR1)) { - i = '+'; - goto out; - } - - if(gen3(len, r1, x, UR1)) { - i = '+'; - goto out; - } - - x = r1-r0; - if(gen3(len, x, r1, UR0)) { - i = '-'; - goto out; - } - - if(x > r0) { - if(gen3(len, r0, x, UR1)) { - i = '-'; - goto out; - } - } else - if(gen3(len, x, r0, UR0)) { - i = '-'; - goto out; - } - - return 0; - -calcr0: - f1 = flag & (UR0|UR1); - if(f1 == UR1) { - for(i=1; i<=shmax; i++) { - x = r1<<i; - if(x >= mulval) { - if(x == mulval) { - i += 'a'; - goto out; - } - break; - } - } - } - - if(mulval == r1+r0) { - i = '+'; - goto out; - } - if(mulval == r1-r0) { - i = '-'; - goto out; - } - - return 0; - -out: - *--mulcp = i; - return 1; -} - -/* - * hint table has numbers that - * the search algorithm fails on. - * <1000: - * all numbers - * <5000: - * ÷ by 5 - * <10000: - * ÷ by 50 - * <65536: - * ÷ by 250 - */ -Hintab hintab[] = -{ - 683, "b++d+e+", - 687, "b+e++e-", - 691, "b++d+e+", - 731, "b++d+e+", - 811, "b++d+i+", - 821, "b++e+e+", - 843, "b+d++e+", - 851, "b+f-+e-", - 853, "b++e+e+", - 877, "c++++g-", - 933, "b+c++g-", - 981, "c-+e-d+", - 1375, "b+c+b+h-", - 1675, "d+b++h+", - 2425, "c++f-e+", - 2675, "c+d++f-", - 2750, "b+d-b+h-", - 2775, "c-+g-e-", - 3125, "b++e+g+", - 3275, "b+c+g+e+", - 3350, "c++++i+", - 3475, "c-+e-f-", - 3525, "c-+d+g-", - 3625, "c-+e-j+", - 3675, "b+d+d+e+", - 3725, "b+d-+h+", - 3925, "b+d+f-d-", - 4275, "b+g++e+", - 4325, "b+h-+d+", - 4425, "b+b+g-j-", - 4525, "b+d-d+f+", - 4675, "c++d-g+", - 4775, "b+d+b+g-", - 4825, "c+c-+i-", - 4850, "c++++i-", - 4925, "b++e-g-", - 4975, "c+f++e-", - 5500, "b+g-c+d+", - 6700, "d+b++i+", - 9700, "d++++j-", - 11000, "b+f-c-h-", - 11750, "b+d+g+j-", - 12500, "b+c+e-k+", - 13250, "b+d+e-f+", - 13750, "b+h-c-d+", - 14250, "b+g-c+e-", - 14500, "c+f+j-d-", - 14750, "d-g--f+", - 16750, "b+e-d-n+", - 17750, "c+h-b+e+", - 18250, "d+b+h-d+", - 18750, "b+g-++f+", - 19250, "b+e+b+h+", - 19750, "b++h--f-", - 20250, "b+e-l-c+", - 20750, "c++bi+e-", - 21250, "b+i+l+c+", - 22000, "b+e+d-g-", - 22250, "b+d-h+k-", - 22750, "b+d-e-g+", - 23250, "b+c+h+e-", - 23500, "b+g-c-g-", - 23750, "b+g-b+h-", - 24250, "c++g+m-", - 24750, "b+e+e+j-", - 25000, "b++dh+g+", - 25250, "b+e+d-g-", - 25750, "b+e+b+j+", - 26250, "b+h+c+e+", - 26500, "b+h+c+g+", - 26750, "b+d+e+g-", - 27250, "b+e+e+f+", - 27500, "c-i-c-d+", - 27750, "b+bd++j+", - 28250, "d-d-++i-", - 28500, "c+c-h-e-", - 29000, "b+g-d-f+", - 29500, "c+h+++e-", - 29750, "b+g+f-c+", - 30250, "b+f-g-c+", - 33500, "c-f-d-n+", - 33750, "b+d-b+j-", - 34250, "c+e+++i+", - 35250, "e+b+d+k+", - 35500, "c+e+d-g-", - 35750, "c+i-++e+", - 36250, "b+bh-d+e+", - 36500, "c+c-h-e-", - 36750, "d+e--i+", - 37250, "b+g+g+b+", - 37500, "b+h-b+f+", - 37750, "c+be++j-", - 38500, "b+e+b+i+", - 38750, "d+i-b+d+", - 39250, "b+g-l-+d+", - 39500, "b+g-c+g-", - 39750, "b+bh-c+f-", - 40250, "b+bf+d+g-", - 40500, "b+g-c+g+", - 40750, "c+b+i-e+", - 41250, "d++bf+h+", - 41500, "b+j+c+d-", - 41750, "c+f+b+h-", - 42500, "c+h++g+", - 42750, "b+g+d-f-", - 43250, "b+l-e+d-", - 43750, "c+bd+h+f-", - 44000, "b+f+g-d-", - 44250, "b+d-g--f+", - 44500, "c+e+c+h+", - 44750, "b+e+d-h-", - 45250, "b++g+j-g+", - 45500, "c+d+e-g+", - 45750, "b+d-h-e-", - 46250, "c+bd++j+", - 46500, "b+d-c-j-", - 46750, "e-e-b+g-", - 47000, "b+c+d-j-", - 47250, "b+e+e-g-", - 47500, "b+g-c-h-", - 47750, "b+f-c+h-", - 48250, "d--h+n-", - 48500, "b+c-g+m-", - 48750, "b+e+e-g+", - 49500, "c-f+e+j-", - 49750, "c+c+g++f-", - 50000, "b+e+e+k+", - 50250, "b++i++g+", - 50500, "c+g+f-i+", - 50750, "b+e+d+k-", - 51500, "b+i+c-f+", - 51750, "b+bd+g-e-", - 52250, "b+d+g-j+", - 52500, "c+c+f+g+", - 52750, "b+c+e+i+", - 53000, "b+i+c+g+", - 53500, "c+g+g-n+", - 53750, "b+j+d-c+", - 54250, "b+d-g-j-", - 54500, "c-f+e+f+", - 54750, "b+f-+c+g+", - 55000, "b+g-d-g-", - 55250, "b+e+e+g+", - 55500, "b+cd++j+", - 55750, "b+bh-d-f-", - 56250, "c+d-b+j-", - 56500, "c+d+c+i+", - 56750, "b+e+d++h-", - 57000, "b+d+g-f+", - 57250, "b+f-m+d-", - 57750, "b+i+c+e-", - 58000, "b+e+d+h+", - 58250, "c+b+g+g+", - 58750, "d-e-j--e+", - 59000, "d-i-+e+", - 59250, "e--h-m+", - 59500, "c+c-h+f-", - 59750, "b+bh-e+i-", - 60250, "b+bh-e-e-", - 60500, "c+c-g-g-", - 60750, "b+e-l-e-", - 61250, "b+g-g-c+", - 61750, "b+g-c+g+", - 62250, "f--+c-i-", - 62750, "e+f--+g+", - 64750, "b+f+d+p-", -}; -int hintabsize = nelem(hintab); diff --git a/src/cmd/9c/peep.c b/src/cmd/9c/peep.c deleted file mode 100644 index 2e8e2adcc..000000000 --- a/src/cmd/9c/peep.c +++ /dev/null @@ -1,1076 +0,0 @@ -// cmd/9c/peep.c from Vita Nuova. -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -/* -static Reg* -rnops(Reg *r) -{ - Prog *p; - Reg *r1; - - if(r != R) - for(;;){ - p = r->prog; - if(p->as != ANOP || p->from.type != D_NONE || p->to.type != D_NONE) - break; - r1 = uniqs(r); - if(r1 == R) - break; - r = r1; - } - return r; -} -*/ - -void -peep(void) -{ - Reg *r, *r1, *r2; - Prog *p, *p1; - int t; -/* - * complete R structure - */ - t = 0; - for(r=firstr; r!=R; r=r1) { - r1 = r->link; - if(r1 == R) - break; - p = r->prog->link; - while(p != r1->prog) - switch(p->as) { - default: - r2 = rega(); - r->link = r2; - r2->link = r1; - - r2->prog = p; - r2->p1 = r; - r->s1 = r2; - r2->s1 = r1; - r1->p1 = r2; - - r = r2; - t++; - - case ADATA: - case AGLOBL: - case ANAME: - case ASIGNAME: - p = p->link; - } - } - -loop1: - t = 0; - for(r=firstr; r!=R; r=r->link) { - p = r->prog; - if(p->as == AMOVW || p->as == AMOVD || p->as == AFMOVS || p->as == AFMOVD) - if(regtyp(&p->to)) { - if(regtyp(&p->from)) - if(p->from.type == p->to.type) { - if(copyprop(r)) { - excise(r); - t++; - } else - if(subprop(r) && copyprop(r)) { - excise(r); - t++; - } - } - if(regzer(&p->from)) - if(p->to.type == D_REG) { - p->from.type = D_REG; - p->from.reg = REGZERO; - if(copyprop(r)) { - excise(r); - t++; - } else - if(subprop(r) && copyprop(r)) { - excise(r); - t++; - } - } - } - } - if(t) - goto loop1; - /* - * look for MOVB x,R; MOVB R,R - */ - for(r=firstr; r!=R; r=r->link) { - p = r->prog; - switch(p->as) { - default: - continue; - case AMOVH: - case AMOVHZ: - case AMOVB: - case AMOVBZ: - case AMOVW: - case AMOVWZ: - if(p->to.type != D_REG) - continue; - break; - } - r1 = r->link; - if(r1 == R) - continue; - p1 = r1->prog; - if(p1->as != p->as) - continue; - if(p1->from.type != D_REG || p1->from.reg != p->to.reg) - continue; - if(p1->to.type != D_REG || p1->to.reg != p->to.reg) - continue; - excise(r1); - } - - if(debug['D'] > 1) - return; /* allow following code improvement to be suppressed */ - - /* - * look for OP x,y,R; CMP R, $0 -> OPCC x,y,R - * when OP can set condition codes correctly - */ - for(r=firstr; r!=R; r=r->link) { - p = r->prog; - switch(p->as) { - case ACMP: - case ACMPW: /* always safe? */ - if(!regzer(&p->to)) - continue; - r1 = r->s1; - if(r1 == R) - continue; - switch(r1->prog->as) { - default: - continue; - case ABCL: - case ABC: - /* the conditions can be complex and these are currently little used */ - continue; - case ABEQ: - case ABGE: - case ABGT: - case ABLE: - case ABLT: - case ABNE: - case ABVC: - case ABVS: - break; - } - r1 = r; - do - r1 = uniqp(r1); - while (r1 != R && r1->prog->as == ANOP); - if(r1 == R) - continue; - p1 = r1->prog; - if(p1->to.type != D_REG || p1->to.reg != p->from.reg) - continue; - switch(p1->as) { - case ASUB: - case AADD: - case AXOR: - case AOR: - /* irregular instructions */ - if(p1->from.type == D_CONST) - continue; - break; - } - switch(p1->as) { - default: - continue; - case AMOVW: - case AMOVD: - if(p1->from.type != D_REG) - continue; - continue; - case AANDCC: - case AANDNCC: - case AORCC: - case AORNCC: - case AXORCC: - case ASUBCC: - case ASUBECC: - case ASUBMECC: - case ASUBZECC: - case AADDCC: - case AADDCCC: - case AADDECC: - case AADDMECC: - case AADDZECC: - case ARLWMICC: - case ARLWNMCC: - t = p1->as; - break; - /* don't deal with floating point instructions for now */ -/* - case AFABS: t = AFABSCC; break; - case AFADD: t = AFADDCC; break; - case AFADDS: t = AFADDSCC; break; - case AFCTIW: t = AFCTIWCC; break; - case AFCTIWZ: t = AFCTIWZCC; break; - case AFDIV: t = AFDIVCC; break; - case AFDIVS: t = AFDIVSCC; break; - case AFMADD: t = AFMADDCC; break; - case AFMADDS: t = AFMADDSCC; break; - case AFMOVD: t = AFMOVDCC; break; - case AFMSUB: t = AFMSUBCC; break; - case AFMSUBS: t = AFMSUBSCC; break; - case AFMUL: t = AFMULCC; break; - case AFMULS: t = AFMULSCC; break; - case AFNABS: t = AFNABSCC; break; - case AFNEG: t = AFNEGCC; break; - case AFNMADD: t = AFNMADDCC; break; - case AFNMADDS: t = AFNMADDSCC; break; - case AFNMSUB: t = AFNMSUBCC; break; - case AFNMSUBS: t = AFNMSUBSCC; break; - case AFRSP: t = AFRSPCC; break; - case AFSUB: t = AFSUBCC; break; - case AFSUBS: t = AFSUBSCC; break; - case ACNTLZW: t = ACNTLZWCC; break; - case AMTFSB0: t = AMTFSB0CC; break; - case AMTFSB1: t = AMTFSB1CC; break; -*/ - case AADD: t = AADDCC; break; - case AADDV: t = AADDVCC; break; - case AADDC: t = AADDCCC; break; - case AADDCV: t = AADDCVCC; break; - case AADDME: t = AADDMECC; break; - case AADDMEV: t = AADDMEVCC; break; - case AADDE: t = AADDECC; break; - case AADDEV: t = AADDEVCC; break; - case AADDZE: t = AADDZECC; break; - case AADDZEV: t = AADDZEVCC; break; - case AAND: t = AANDCC; break; - case AANDN: t = AANDNCC; break; - case ADIVW: t = ADIVWCC; break; - case ADIVWV: t = ADIVWVCC; break; - case ADIVWU: t = ADIVWUCC; break; - case ADIVWUV: t = ADIVWUVCC; break; - case ADIVD: t = ADIVDCC; break; - case ADIVDV: t = ADIVDVCC; break; - case ADIVDU: t = ADIVDUCC; break; - case ADIVDUV: t = ADIVDUVCC; break; - case AEQV: t = AEQVCC; break; - case AEXTSB: t = AEXTSBCC; break; - case AEXTSH: t = AEXTSHCC; break; - case AEXTSW: t = AEXTSWCC; break; - case AMULHW: t = AMULHWCC; break; - case AMULHWU: t = AMULHWUCC; break; - case AMULLW: t = AMULLWCC; break; - case AMULLWV: t = AMULLWVCC; break; - case AMULHD: t = AMULHDCC; break; - case AMULHDU: t = AMULHDUCC; break; - case AMULLD: t = AMULLDCC; break; - case AMULLDV: t = AMULLDVCC; break; - case ANAND: t = ANANDCC; break; - case ANEG: t = ANEGCC; break; - case ANEGV: t = ANEGVCC; break; - case ANOR: t = ANORCC; break; - case AOR: t = AORCC; break; - case AORN: t = AORNCC; break; - case AREM: t = AREMCC; break; - case AREMV: t = AREMVCC; break; - case AREMU: t = AREMUCC; break; - case AREMUV: t = AREMUVCC; break; - case AREMD: t = AREMDCC; break; - case AREMDV: t = AREMDVCC; break; - case AREMDU: t = AREMDUCC; break; - case AREMDUV: t = AREMDUVCC; break; - case ARLWMI: t = ARLWMICC; break; - case ARLWNM: t = ARLWNMCC; break; - case ASLW: t = ASLWCC; break; - case ASRAW: t = ASRAWCC; break; - case ASRW: t = ASRWCC; break; - case ASLD: t = ASLDCC; break; - case ASRAD: t = ASRADCC; break; - case ASRD: t = ASRDCC; break; - case ASUB: t = ASUBCC; break; - case ASUBV: t = ASUBVCC; break; - case ASUBC: t = ASUBCCC; break; - case ASUBCV: t = ASUBCVCC; break; - case ASUBME: t = ASUBMECC; break; - case ASUBMEV: t = ASUBMEVCC; break; - case ASUBE: t = ASUBECC; break; - case ASUBEV: t = ASUBEVCC; break; - case ASUBZE: t = ASUBZECC; break; - case ASUBZEV: t = ASUBZEVCC; break; - case AXOR: t = AXORCC; break; - break; - } - if(debug['D']) - print("cmp %P; %P -> ", p1, p); - p1->as = t; - if(debug['D']) - print("%P\n", p1); - excise(r); - continue; - } - } -} - -void -excise(Reg *r) -{ - Prog *p; - - p = r->prog; - p->as = ANOP; - p->from = zprog.from; - p->from3 = zprog.from3; - p->to = zprog.to; - p->reg = zprog.reg; /**/ -} - -Reg* -uniqp(Reg *r) -{ - Reg *r1; - - r1 = r->p1; - if(r1 == R) { - r1 = r->p2; - if(r1 == R || r1->p2link != R) - return R; - } else - if(r->p2 != R) - return R; - return r1; -} - -Reg* -uniqs(Reg *r) -{ - Reg *r1; - - r1 = r->s1; - if(r1 == R) { - r1 = r->s2; - if(r1 == R) - return R; - } else - if(r->s2 != R) - return R; - return r1; -} - -/* - * if the system forces R0 to be zero, - * convert references to $0 to references to R0. - */ -int -regzer(Addr *a) -{ - if(R0ISZERO) { - if(a->type == D_CONST) - if(a->sym == nil) - if(a->offset == 0) - return 1; - if(a->type == D_REG) - if(a->reg == REGZERO) - return 1; - } - return 0; -} - -int -regtyp(Addr *a) -{ - - if(a->type == D_REG) { - if(!R0ISZERO || a->reg != REGZERO) - return 1; - return 0; - } - if(a->type == D_FREG) - return 1; - return 0; -} - -/* - * the idea is to substitute - * one register for another - * from one MOV to another - * MOV a, R0 - * ADD b, R0 / no use of R1 - * MOV R0, R1 - * would be converted to - * MOV a, R1 - * ADD b, R1 - * MOV R1, R0 - * hopefully, then the former or latter MOV - * will be eliminated by copy propagation. - */ -int -subprop(Reg *r0) -{ - Prog *p; - Addr *v1, *v2; - Reg *r; - int t; - - p = r0->prog; - v1 = &p->from; - if(!regtyp(v1)) - return 0; - v2 = &p->to; - if(!regtyp(v2)) - return 0; - for(r=uniqp(r0); r!=R; r=uniqp(r)) { - if(uniqs(r) == R) - break; - p = r->prog; - switch(p->as) { - case ABL: - return 0; - - case AADD: - case AADDC: - case AADDCC: - case AADDE: - case AADDECC: - case ASUB: - case ASUBCC: - case ASUBC: - case ASUBCCC: - case ASUBE: - case ASUBECC: - case ASLW: - case ASRW: - case ASRWCC: - case ASRAW: - case ASRAWCC: - case ASLD: - case ASRD: - case ASRAD: - case AOR: - case AORCC: - case AORN: - case AORNCC: - case AAND: - case AANDCC: - case AANDN: - case AANDNCC: - case ANAND: - case ANANDCC: - case ANOR: - case ANORCC: - case AXOR: - case AXORCC: - case AMULHW: - case AMULHWU: - case AMULLW: - case AMULLD: - case ADIVW: - case ADIVWU: - case ADIVD: - case ADIVDU: - case AREM: - case AREMU: - case AREMD: - case AREMDU: - case ARLWNM: - case ARLWNMCC: - - case AFADD: - case AFADDS: - case AFSUB: - case AFSUBS: - case AFMUL: - case AFMULS: - case AFDIV: - case AFDIVS: - if(p->to.type == v1->type) - if(p->to.reg == v1->reg) { - if(p->reg == NREG) - p->reg = p->to.reg; - goto gotit; - } - break; - - case AADDME: - case AADDMECC: - case AADDZE: - case AADDZECC: - case ASUBME: - case ASUBMECC: - case ASUBZE: - case ASUBZECC: - case ANEG: - case ANEGCC: - case AFNEG: - case AFNEGCC: - case AFMOVS: - case AFMOVD: - case AMOVW: - case AMOVD: - if(p->to.type == v1->type) - if(p->to.reg == v1->reg) - goto gotit; - break; - } - if(copyau(&p->from, v2) || - copyau1(p, v2) || - copyau(&p->to, v2)) - break; - if(copysub(&p->from, v1, v2, 0) || - copysub1(p, v1, v2, 0) || - copysub(&p->to, v1, v2, 0)) - break; - } - return 0; - -gotit: - copysub(&p->to, v1, v2, 1); - if(debug['P']) { - print("gotit: %D->%D\n%P", v1, v2, r->prog); - if(p->from.type == v2->type) - print(" excise"); - print("\n"); - } - for(r=uniqs(r); r!=r0; r=uniqs(r)) { - p = r->prog; - copysub(&p->from, v1, v2, 1); - copysub1(p, v1, v2, 1); - copysub(&p->to, v1, v2, 1); - if(debug['P']) - print("%P\n", r->prog); - } - t = v1->reg; - v1->reg = v2->reg; - v2->reg = t; - if(debug['P']) - print("%P last\n", r->prog); - return 1; -} - -/* - * The idea is to remove redundant copies. - * v1->v2 F=0 - * (use v2 s/v2/v1/)* - * set v1 F=1 - * use v2 return fail - * ----------------- - * v1->v2 F=0 - * (use v2 s/v2/v1/)* - * set v1 F=1 - * set v2 return success - */ -int -copyprop(Reg *r0) -{ - Prog *p; - Addr *v1, *v2; - Reg *r; - - p = r0->prog; - v1 = &p->from; - v2 = &p->to; - if(copyas(v1, v2)) - return 1; - for(r=firstr; r!=R; r=r->link) - r->active = 0; - return copy1(v1, v2, r0->s1, 0); -} - -int -copy1(Addr *v1, Addr *v2, Reg *r, int f) -{ - int t; - Prog *p; - - if(r->active) { - if(debug['P']) - print("act set; return 1\n"); - return 1; - } - r->active = 1; - if(debug['P']) - print("copy %D->%D f=%d\n", v1, v2, f); - for(; r != R; r = r->s1) { - p = r->prog; - if(debug['P']) - print("%P", p); - if(!f && uniqp(r) == R) { - f = 1; - if(debug['P']) - print("; merge; f=%d", f); - } - t = copyu(p, v2, nil); - switch(t) { - case 2: /* rar, cant split */ - if(debug['P']) - print("; %Drar; return 0\n", v2); - return 0; - - case 3: /* set */ - if(debug['P']) - print("; %Dset; return 1\n", v2); - return 1; - - case 1: /* used, substitute */ - case 4: /* use and set */ - if(f) { - if(!debug['P']) - return 0; - if(t == 4) - print("; %Dused+set and f=%d; return 0\n", v2, f); - else - print("; %Dused and f=%d; return 0\n", v2, f); - return 0; - } - if(copyu(p, v2, v1)) { - if(debug['P']) - print("; sub fail; return 0\n"); - return 0; - } - if(debug['P']) - print("; sub%D/%D", v2, v1); - if(t == 4) { - if(debug['P']) - print("; %Dused+set; return 1\n", v2); - return 1; - } - break; - } - if(!f) { - t = copyu(p, v1, nil); - if(!f && (t == 2 || t == 3 || t == 4)) { - f = 1; - if(debug['P']) - print("; %Dset and !f; f=%d", v1, f); - } - } - if(debug['P']) - print("\n"); - if(r->s2) - if(!copy1(v1, v2, r->s2, f)) - return 0; - } - return 1; -} - -/* - * return - * 1 if v only used (and substitute), - * 2 if read-alter-rewrite - * 3 if set - * 4 if set and used - * 0 otherwise (not touched) - */ -int -copyu(Prog *p, Addr *v, Addr *s) -{ - - switch(p->as) { - - default: - if(debug['P']) - print(" (\?\?\?)"); - return 2; - - - case ANOP: /* read, write */ - case AMOVH: - case AMOVHZ: - case AMOVB: - case AMOVBZ: - case AMOVW: - case AMOVWZ: - case AMOVD: - - case ANEG: - case ANEGCC: - case AADDME: - case AADDMECC: - case AADDZE: - case AADDZECC: - case ASUBME: - case ASUBMECC: - case ASUBZE: - case ASUBZECC: - - case AFCTIW: - case AFCTIWZ: - case AFMOVS: - case AFMOVD: - case AFRSP: - case AFNEG: - case AFNEGCC: - if(s != nil) { - if(copysub(&p->from, v, s, 1)) - return 1; - if(!copyas(&p->to, v)) - if(copysub(&p->to, v, s, 1)) - return 1; - return 0; - } - if(copyas(&p->to, v)) { - if(copyau(&p->from, v)) - return 4; - return 3; - } - if(copyau(&p->from, v)) - return 1; - if(copyau(&p->to, v)) - return 1; - return 0; - - case ARLWMI: /* read read rar */ - case ARLWMICC: - if(copyas(&p->to, v)) - return 2; - /* fall through */ - - case AADD: /* read read write */ - case AADDC: - case AADDE: - case ASUB: - case ASLW: - case ASRW: - case ASRAW: - case ASLD: - case ASRD: - case ASRAD: - case AOR: - case AORCC: - case AORN: - case AORNCC: - case AAND: - case AANDCC: - case AANDN: - case AANDNCC: - case ANAND: - case ANANDCC: - case ANOR: - case ANORCC: - case AXOR: - case AMULHW: - case AMULHWU: - case AMULLW: - case AMULLD: - case ADIVW: - case ADIVD: - case ADIVWU: - case ADIVDU: - case AREM: - case AREMU: - case AREMD: - case AREMDU: - case ARLWNM: - case ARLWNMCC: - - case AFADDS: - case AFADD: - case AFSUBS: - case AFSUB: - case AFMULS: - case AFMUL: - case AFDIVS: - case AFDIV: - if(s != nil) { - if(copysub(&p->from, v, s, 1)) - return 1; - if(copysub1(p, v, s, 1)) - return 1; - if(!copyas(&p->to, v)) - if(copysub(&p->to, v, s, 1)) - return 1; - return 0; - } - if(copyas(&p->to, v)) { - if(p->reg == NREG) - p->reg = p->to.reg; - if(copyau(&p->from, v)) - return 4; - if(copyau1(p, v)) - return 4; - return 3; - } - if(copyau(&p->from, v)) - return 1; - if(copyau1(p, v)) - return 1; - if(copyau(&p->to, v)) - return 1; - return 0; - - case ABEQ: - case ABGT: - case ABGE: - case ABLT: - case ABLE: - case ABNE: - case ABVC: - case ABVS: - break; - - case ACMP: /* read read */ - case ACMPU: - case ACMPW: - case ACMPWU: - case AFCMPO: - case AFCMPU: - if(s != nil) { - if(copysub(&p->from, v, s, 1)) - return 1; - return copysub(&p->to, v, s, 1); - } - if(copyau(&p->from, v)) - return 1; - if(copyau(&p->to, v)) - return 1; - break; - - case ABR: /* funny */ - if(s != nil) { - if(copysub(&p->to, v, s, 1)) - return 1; - return 0; - } - if(copyau(&p->to, v)) - return 1; - return 0; - - case ARETURN: /* funny */ - if(v->type == D_REG) - if(v->reg == REGRET) - return 2; - if(v->type == D_FREG) - if(v->reg == FREGRET) - return 2; - - case ABL: /* funny */ - if(v->type == D_REG) { - if(v->reg <= REGEXT && v->reg > exregoffset) - return 2; - if(v->reg == REGARG) - return 2; - } - if(v->type == D_FREG) { - if(v->reg <= FREGEXT && v->reg > exfregoffset) - return 2; - } - - if(s != nil) { - if(copysub(&p->to, v, s, 1)) - return 1; - return 0; - } - if(copyau(&p->to, v)) - return 4; - return 3; - - case ATEXT: /* funny */ - if(v->type == D_REG) - if(v->reg == REGARG) - return 3; - return 0; - } - return 0; -} - -int -a2type(Prog *p) -{ - - switch(p->as) { - case AADD: - case AADDC: - case AADDCC: - case AADDCCC: - case AADDE: - case AADDECC: - case AADDME: - case AADDMECC: - case AADDZE: - case AADDZECC: - case ASUB: - case ASUBC: - case ASUBCC: - case ASUBCCC: - case ASUBE: - case ASUBECC: - case ASUBME: - case ASUBMECC: - case ASUBZE: - case ASUBZECC: - case ASLW: - case ASLWCC: - case ASRW: - case ASRWCC: - case ASRAW: - case ASRAWCC: - case ASLD: - case ASLDCC: - case ASRD: - case ASRDCC: - case ASRAD: - case ASRADCC: - case AOR: - case AORCC: - case AORN: - case AORNCC: - case AAND: - case AANDCC: - case AANDN: - case AANDNCC: - case AXOR: - case AXORCC: - case ANEG: - case ANEGCC: - case AMULHW: - case AMULHWU: - case AMULLW: - case AMULLWCC: - case ADIVW: - case ADIVWCC: - case ADIVWU: - case ADIVWUCC: - case AREM: - case AREMCC: - case AREMU: - case AREMUCC: - case AMULLD: - case AMULLDCC: - case ADIVD: - case ADIVDCC: - case ADIVDU: - case ADIVDUCC: - case AREMD: - case AREMDCC: - case AREMDU: - case AREMDUCC: - case ANAND: - case ANANDCC: - case ANOR: - case ANORCC: - case ARLWMI: - case ARLWMICC: - case ARLWNM: - case ARLWNMCC: - return D_REG; - - case AFADDS: - case AFADDSCC: - case AFADD: - case AFADDCC: - case AFSUBS: - case AFSUBSCC: - case AFSUB: - case AFSUBCC: - case AFMULS: - case AFMULSCC: - case AFMUL: - case AFMULCC: - case AFDIVS: - case AFDIVSCC: - case AFDIV: - case AFDIVCC: - case AFNEG: - case AFNEGCC: - return D_FREG; - } - return D_NONE; -} - -/* - * direct reference, - * could be set/use depending on - * semantics - */ -int -copyas(Addr *a, Addr *v) -{ - - if(regtyp(v)) - if(a->type == v->type) - if(a->reg == v->reg) - return 1; - return 0; -} - -/* - * either direct or indirect - */ -int -copyau(Addr *a, Addr *v) -{ - - if(copyas(a, v)) - return 1; - if(v->type == D_REG) - if(a->type == D_OREG) - if(v->reg == a->reg) - return 1; - return 0; -} - -int -copyau1(Prog *p, Addr *v) -{ - - if(regtyp(v)) - if(p->from.type == v->type || p->to.type == v->type) - if(p->reg == v->reg) { - if(a2type(p) != v->type) - print("botch a2type %P\n", p); - return 1; - } - return 0; -} - -/* - * substitute s for v in a - * return failure to substitute - */ -int -copysub(Addr *a, Addr *v, Addr *s, int f) -{ - - if(f) - if(copyau(a, v)) - a->reg = s->reg; - return 0; -} - -int -copysub1(Prog *p1, Addr *v, Addr *s, int f) -{ - - if(f) - if(copyau1(p1, v)) - p1->reg = s->reg; - return 0; -} diff --git a/src/cmd/9c/reg.c b/src/cmd/9c/reg.c deleted file mode 100644 index 81a7c7fe4..000000000 --- a/src/cmd/9c/reg.c +++ /dev/null @@ -1,1163 +0,0 @@ -// cmd/9c/reg.c from Vita Nuova. -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -Reg* -rega(void) -{ - Reg *r; - - r = freer; - if(r == R) { - r = alloc(sizeof(*r)); - } else - freer = r->link; - - *r = zreg; - return r; -} - -int -rcmp(const void *a1, const void *a2) -{ - const Rgn *p1, *p2; - int c1, c2; - - p1 = a1; - p2 = a2; - c1 = p2->cost; - c2 = p1->cost; - if(c1 -= c2) - return c1; - return p2->varno - p1->varno; -} - -void -regopt(Prog *p) -{ - Reg *r, *r1, *r2; - Prog *p1; - int i, z; - int32 initpc, val, npc; - uint32 vreg; - Bits bit; - struct - { - int32 m; - int32 c; - Reg* p; - } log5[6], *lp; - - firstr = R; - lastr = R; - nvar = 0; - regbits = 0; - for(z=0; z<BITS; z++) { - externs.b[z] = 0; - params.b[z] = 0; - consts.b[z] = 0; - addrs.b[z] = 0; - } - - /* - * pass 1 - * build aux data structure - * allocate pcs - * find use and set of variables - */ - val = 5L * 5L * 5L * 5L * 5L; - lp = log5; - for(i=0; i<5; i++) { - lp->m = val; - lp->c = 0; - lp->p = R; - val /= 5L; - lp++; - } - val = 0; - for(; p != P; p = p->link) { - switch(p->as) { - case ADATA: - case AGLOBL: - case ANAME: - case ASIGNAME: - case AFUNCDATA: - continue; - } - r = rega(); - if(firstr == R) { - firstr = r; - lastr = r; - } else { - lastr->link = r; - r->p1 = lastr; - lastr->s1 = r; - lastr = r; - } - r->prog = p; - r->pc = val; - val++; - - lp = log5; - for(i=0; i<5; i++) { - lp->c--; - if(lp->c <= 0) { - lp->c = lp->m; - if(lp->p != R) - lp->p->log5 = r; - lp->p = r; - (lp+1)->c = 0; - break; - } - lp++; - } - - r1 = r->p1; - if(r1 != R) - switch(r1->prog->as) { - case ARETURN: - case ABR: - case ARFI: - case ARFCI: - case ARFID: - r->p1 = R; - r1->s1 = R; - } - - /* - * left side always read - */ - bit = mkvar(&p->from, p->as==AMOVW || p->as == AMOVWZ || p->as == AMOVD); - for(z=0; z<BITS; z++) - r->use1.b[z] |= bit.b[z]; - - /* - * right side depends on opcode - */ - bit = mkvar(&p->to, 0); - if(bany(&bit)) - switch(p->as) { - default: - diag(Z, "reg: unknown asop: %A", p->as); - break; - - /* - * right side write - */ - case ANOP: - case AMOVB: - case AMOVBU: - case AMOVBZ: - case AMOVBZU: - case AMOVH: - case AMOVHBR: - case AMOVWBR: - case AMOVHU: - case AMOVHZ: - case AMOVHZU: - case AMOVW: - case AMOVWU: - case AMOVWZ: - case AMOVWZU: - case AMOVD: - case AMOVDU: - case AFMOVD: - case AFMOVDCC: - case AFMOVDU: - case AFMOVS: - case AFMOVSU: - case AFRSP: - for(z=0; z<BITS; z++) - r->set.b[z] |= bit.b[z]; - break; - - /* - * funny - */ - case ABL: - for(z=0; z<BITS; z++) - addrs.b[z] |= bit.b[z]; - break; - } - } - if(firstr == R) - return; - initpc = pc - val; - npc = val; - - /* - * pass 2 - * turn branch references to pointers - * build back pointers - */ - for(r = firstr; r != R; r = r->link) { - p = r->prog; - if(p->to.type == D_BRANCH) { - val = p->to.offset - initpc; - r1 = firstr; - while(r1 != R) { - r2 = r1->log5; - if(r2 != R && val >= r2->pc) { - r1 = r2; - continue; - } - if(r1->pc == val) - break; - r1 = r1->link; - } - if(r1 == R) { - nearln = p->lineno; - diag(Z, "ref not found\n%P", p); - continue; - } - if(r1 == r) { - nearln = p->lineno; - diag(Z, "ref to self\n%P", p); - continue; - } - r->s2 = r1; - r->p2link = r1->p2; - r1->p2 = r; - } - } - if(debug['R']) { - p = firstr->prog; - print("\n%L %D\n", p->lineno, &p->from); - } - - /* - * pass 2.5 - * find looping structure - */ - for(r = firstr; r != R; r = r->link) - r->active = 0; - change = 0; - loopit(firstr, npc); - if(debug['R'] && debug['v']) { - print("\nlooping structure:\n"); - for(r = firstr; r != R; r = r->link) { - print("%ld:%P", r->loop, r->prog); - for(z=0; z<BITS; z++) - bit.b[z] = r->use1.b[z] | - r->use2.b[z] | r->set.b[z]; - if(bany(&bit)) { - print("\t"); - if(bany(&r->use1)) - print(" u1=%B", r->use1); - if(bany(&r->use2)) - print(" u2=%B", r->use2); - if(bany(&r->set)) - print(" st=%B", r->set); - } - print("\n"); - } - } - - /* - * pass 3 - * iterate propagating usage - * back until flow graph is complete - */ -loop1: - change = 0; - for(r = firstr; r != R; r = r->link) - r->active = 0; - for(r = firstr; r != R; r = r->link) - if(r->prog->as == ARETURN) - prop(r, zbits, zbits); -loop11: - /* pick up unreachable code */ - i = 0; - for(r = firstr; r != R; r = r1) { - r1 = r->link; - if(r1 && r1->active && !r->active) { - prop(r, zbits, zbits); - i = 1; - } - } - if(i) - goto loop11; - if(change) - goto loop1; - - - /* - * pass 4 - * iterate propagating register/variable synchrony - * forward until graph is complete - */ -loop2: - change = 0; - for(r = firstr; r != R; r = r->link) - r->active = 0; - synch(firstr, zbits); - if(change) - goto loop2; - - - /* - * pass 5 - * isolate regions - * calculate costs (paint1) - */ - r = firstr; - if(r) { - for(z=0; z<BITS; z++) - bit.b[z] = (r->refahead.b[z] | r->calahead.b[z]) & - ~(externs.b[z] | params.b[z] | addrs.b[z] | consts.b[z]); - if(bany(&bit)) { - nearln = r->prog->lineno; - warn(Z, "used and not set: %B", bit); - if(debug['R'] && !debug['w']) - print("used and not set: %B\n", bit); - } - } - if(debug['R'] && debug['v']) - print("\nprop structure:\n"); - for(r = firstr; r != R; r = r->link) - r->act = zbits; - rgp = region; - nregion = 0; - for(r = firstr; r != R; r = r->link) { - if(debug['R'] && debug['v']) - print("%P\n set = %B; rah = %B; cal = %B\n", - r->prog, r->set, r->refahead, r->calahead); - for(z=0; z<BITS; z++) - bit.b[z] = r->set.b[z] & - ~(r->refahead.b[z] | r->calahead.b[z] | addrs.b[z]); - if(bany(&bit)) { - nearln = r->prog->lineno; - warn(Z, "set and not used: %B", bit); - if(debug['R']) - print("set an not used: %B\n", bit); - excise(r); - } - for(z=0; z<BITS; z++) - bit.b[z] = LOAD(r) & ~(r->act.b[z] | addrs.b[z]); - while(bany(&bit)) { - i = bnum(bit); - rgp->enter = r; - rgp->varno = i; - change = 0; - if(debug['R'] && debug['v']) - print("\n"); - paint1(r, i); - bit.b[i/32] &= ~(1L<<(i%32)); - if(change <= 0) { - if(debug['R']) - print("%L$%d: %B\n", - r->prog->lineno, change, blsh(i)); - continue; - } - rgp->cost = change; - nregion++; - if(nregion >= NRGN) - fatal(Z, "too many regions"); - rgp++; - } - } - qsort(region, nregion, sizeof(region[0]), rcmp); - - /* - * pass 6 - * determine used registers (paint2) - * replace code (paint3) - */ - rgp = region; - for(i=0; i<nregion; i++) { - bit = blsh(rgp->varno); - vreg = paint2(rgp->enter, rgp->varno); - vreg = allreg(vreg, rgp); - if(debug['R']) { - if(rgp->regno >= NREG) - print("%L$%d F%d: %B\n", - rgp->enter->prog->lineno, - rgp->cost, - rgp->regno-NREG, - bit); - else - print("%L$%d R%d: %B\n", - rgp->enter->prog->lineno, - rgp->cost, - rgp->regno, - bit); - } - if(rgp->regno != 0) - paint3(rgp->enter, rgp->varno, vreg, rgp->regno); - rgp++; - } - /* - * pass 7 - * peep-hole on basic block - */ - if(!debug['R'] || debug['P']) - peep(); - - /* - * pass 8 - * recalculate pc - */ - val = initpc; - for(r = firstr; r != R; r = r1) { - r->pc = val; - p = r->prog; - p1 = P; - r1 = r->link; - if(r1 != R) - p1 = r1->prog; - for(; p != p1; p = p->link) { - switch(p->as) { - default: - val++; - break; - - case ANOP: - case ADATA: - case AGLOBL: - case ANAME: - case ASIGNAME: - case AFUNCDATA: - break; - } - } - } - pc = val; - - /* - * fix up branches - */ - if(debug['R']) - if(bany(&addrs)) - print("addrs: %B\n", addrs); - - r1 = 0; /* set */ - for(r = firstr; r != R; r = r->link) { - p = r->prog; - if(p->to.type == D_BRANCH) { - p->to.offset = r->s2->pc; - p->to.u.branch = r->s2->prog; - } - r1 = r; - } - - /* - * last pass - * eliminate nops - * free aux structures - */ - for(p = firstr->prog; p != P; p = p->link){ - while(p->link && p->link->as == ANOP) - p->link = p->link->link; - } - if(r1 != R) { - r1->link = freer; - freer = firstr; - } -} - -/* - * add mov b,rn - * just after r - */ -void -addmove(Reg *r, int bn, int rn, int f) -{ - Prog *p, *p1; - Addr *a; - Var *v; - - p1 = alloc(sizeof(*p1)); - *p1 = zprog; - p = r->prog; - - p1->link = p->link; - p->link = p1; - p1->lineno = p->lineno; - - v = var + bn; - - a = &p1->to; - a->sym = v->sym; - a->name = v->name; - a->offset = v->offset; - a->etype = v->etype; - a->type = D_OREG; - if(a->etype == TARRAY || a->sym == nil) - a->type = D_CONST; - - p1->as = AMOVW; - if(v->etype == TCHAR || v->etype == TUCHAR) - p1->as = AMOVB; - if(v->etype == TSHORT || v->etype == TUSHORT) - p1->as = AMOVH; - if(v->etype == TVLONG || v->etype == TUVLONG || v->etype == TIND) - p1->as = AMOVD; - if(v->etype == TFLOAT) - p1->as = AFMOVS; - if(v->etype == TDOUBLE) - p1->as = AFMOVD; - - p1->from.type = D_REG; - p1->from.reg = rn; - if(rn >= NREG) { - p1->from.type = D_FREG; - p1->from.reg = rn-NREG; - } - if(!f) { - p1->from = *a; - *a = zprog.from; - a->type = D_REG; - a->reg = rn; - if(rn >= NREG) { - a->type = D_FREG; - a->reg = rn-NREG; - } - if(v->etype == TUCHAR) - p1->as = AMOVBZ; - if(v->etype == TUSHORT) - p1->as = AMOVHZ; - if(v->etype == TUINT || v->etype == TULONG) - p1->as = AMOVWZ; - } - if(debug['R']) - print("%P\t.a%P\n", p, p1); -} - -Bits -mkvar(Addr *a, int docon) -{ - Var *v; - int i, t, n, et, z; - int64 o; - Bits bit; - LSym *s; - - t = a->type; - if(t == D_REG && a->reg != NREG) - regbits |= RtoB(a->reg); - if(t == D_FREG && a->reg != NREG) - regbits |= FtoB(a->reg); - s = a->sym; - o = a->offset; - et = a->etype; - if(s == nil) { - if(t != D_CONST || !docon || a->reg != NREG) - goto none; - et = TLONG; - } - if(t == D_CONST) { - if(s == nil && sval(o)) - goto none; - } - n = a->name; - v = var; - for(i=0; i<nvar; i++) { - if(s == v->sym) - if(n == v->name) - if(o == v->offset) - goto out; - v++; - } - if(s) - if(s->name[0] == '.') - goto none; - if(nvar >= NVAR) - fatal(Z, "variable not optimized: %s", s->name); - i = nvar; - nvar++; - v = &var[i]; - v->sym = s; - v->offset = o; - v->etype = et; - v->name = n; - if(debug['R']) - print("bit=%2d et=%2d %D\n", i, et, a); -out: - bit = blsh(i); - if(n == D_EXTERN || n == D_STATIC) - for(z=0; z<BITS; z++) - externs.b[z] |= bit.b[z]; - if(n == D_PARAM) - for(z=0; z<BITS; z++) - params.b[z] |= bit.b[z]; - if(v->etype != et || !(typechlpfd[et] || typev[et])) /* funny punning */ - for(z=0; z<BITS; z++) - addrs.b[z] |= bit.b[z]; - if(t == D_CONST) { - if((int32)o != o) - v->etype = TVLONG; - if(s == nil) { - for(z=0; z<BITS; z++) - consts.b[z] |= bit.b[z]; - return bit; - } - if(et != TARRAY) - for(z=0; z<BITS; z++) - addrs.b[z] |= bit.b[z]; - for(z=0; z<BITS; z++) - params.b[z] |= bit.b[z]; - return bit; - } - if(t == D_OREG) - return bit; - -none: - return zbits; -} - -void -prop(Reg *r, Bits ref, Bits cal) -{ - Reg *r1, *r2; - int z; - - for(r1 = r; r1 != R; r1 = r1->p1) { - for(z=0; z<BITS; z++) { - ref.b[z] |= r1->refahead.b[z]; - if(ref.b[z] != r1->refahead.b[z]) { - r1->refahead.b[z] = ref.b[z]; - change++; - } - cal.b[z] |= r1->calahead.b[z]; - if(cal.b[z] != r1->calahead.b[z]) { - r1->calahead.b[z] = cal.b[z]; - change++; - } - } - switch(r1->prog->as) { - case ABL: - for(z=0; z<BITS; z++) { - cal.b[z] |= ref.b[z] | externs.b[z]; - ref.b[z] = 0; - } - break; - - case ATEXT: - for(z=0; z<BITS; z++) { - cal.b[z] = 0; - ref.b[z] = 0; - } - break; - - case ARETURN: - for(z=0; z<BITS; z++) { - cal.b[z] = externs.b[z]; - ref.b[z] = 0; - } - } - for(z=0; z<BITS; z++) { - ref.b[z] = (ref.b[z] & ~r1->set.b[z]) | - r1->use1.b[z] | r1->use2.b[z]; - cal.b[z] &= ~(r1->set.b[z] | r1->use1.b[z] | r1->use2.b[z]); - r1->refbehind.b[z] = ref.b[z]; - r1->calbehind.b[z] = cal.b[z]; - } - if(r1->active) - break; - r1->active = 1; - } - for(; r != r1; r = r->p1) - for(r2 = r->p2; r2 != R; r2 = r2->p2link) - prop(r2, r->refbehind, r->calbehind); -} - -/* - * find looping structure - * - * 1) find reverse postordering - * 2) find approximate dominators, - * the actual dominators if the flow graph is reducible - * otherwise, dominators plus some other non-dominators. - * See Matthew S. Hecht and Jeffrey D. Ullman, - * "Analysis of a Simple Algorithm for Global Data Flow Problems", - * Conf. Record of ACM Symp. on Principles of Prog. Langs, Boston, Massachusetts, - * Oct. 1-3, 1973, pp. 207-217. - * 3) find all nodes with a predecessor dominated by the current node. - * such a node is a loop head. - * recursively, all preds with a greater rpo number are in the loop - */ -int32 -postorder(Reg *r, Reg **rpo2r, int32 n) -{ - Reg *r1; - - r->rpo = 1; - r1 = r->s1; - if(r1 && !r1->rpo) - n = postorder(r1, rpo2r, n); - r1 = r->s2; - if(r1 && !r1->rpo) - n = postorder(r1, rpo2r, n); - rpo2r[n] = r; - n++; - return n; -} - -int32 -rpolca(int32 *idom, int32 rpo1, int32 rpo2) -{ - int32 t; - - if(rpo1 == -1) - return rpo2; - while(rpo1 != rpo2){ - if(rpo1 > rpo2){ - t = rpo2; - rpo2 = rpo1; - rpo1 = t; - } - while(rpo1 < rpo2){ - t = idom[rpo2]; - if(t >= rpo2) - fatal(Z, "bad idom"); - rpo2 = t; - } - } - return rpo1; -} - -int -doms(int32 *idom, int32 r, int32 s) -{ - while(s > r) - s = idom[s]; - return s == r; -} - -int -loophead(int32 *idom, Reg *r) -{ - int32 src; - - src = r->rpo; - if(r->p1 != R && doms(idom, src, r->p1->rpo)) - return 1; - for(r = r->p2; r != R; r = r->p2link) - if(doms(idom, src, r->rpo)) - return 1; - return 0; -} - -void -loopmark(Reg **rpo2r, int32 head, Reg *r) -{ - if(r->rpo < head || r->active == head) - return; - r->active = head; - r->loop += LOOP; - if(r->p1 != R) - loopmark(rpo2r, head, r->p1); - for(r = r->p2; r != R; r = r->p2link) - loopmark(rpo2r, head, r); -} - -void -loopit(Reg *r, int32 nr) -{ - Reg *r1; - int32 i, d, me; - - if(nr > maxnr) { - rpo2r = alloc(nr * sizeof(Reg*)); - idom = alloc(nr * sizeof(int32)); - maxnr = nr; - } - - d = postorder(r, rpo2r, 0); - if(d > nr) - fatal(Z, "too many reg nodes"); - nr = d; - for(i = 0; i < nr / 2; i++){ - r1 = rpo2r[i]; - rpo2r[i] = rpo2r[nr - 1 - i]; - rpo2r[nr - 1 - i] = r1; - } - for(i = 0; i < nr; i++) - rpo2r[i]->rpo = i; - - idom[0] = 0; - for(i = 0; i < nr; i++){ - r1 = rpo2r[i]; - me = r1->rpo; - d = -1; - if(r1->p1 != R && r1->p1->rpo < me) - d = r1->p1->rpo; - for(r1 = r1->p2; r1 != nil; r1 = r1->p2link) - if(r1->rpo < me) - d = rpolca(idom, d, r1->rpo); - idom[i] = d; - } - - for(i = 0; i < nr; i++){ - r1 = rpo2r[i]; - r1->loop++; - if(r1->p2 != R && loophead(idom, r1)) - loopmark(rpo2r, i, r1); - } -} - -void -synch(Reg *r, Bits dif) -{ - Reg *r1; - int z; - - for(r1 = r; r1 != R; r1 = r1->s1) { - for(z=0; z<BITS; z++) { - dif.b[z] = (dif.b[z] & - ~(~r1->refbehind.b[z] & r1->refahead.b[z])) | - r1->set.b[z] | r1->regdiff.b[z]; - if(dif.b[z] != r1->regdiff.b[z]) { - r1->regdiff.b[z] = dif.b[z]; - change++; - } - } - if(r1->active) - break; - r1->active = 1; - for(z=0; z<BITS; z++) - dif.b[z] &= ~(~r1->calbehind.b[z] & r1->calahead.b[z]); - if(r1->s2 != R) - synch(r1->s2, dif); - } -} - -uint32 -allreg(uint32 b, Rgn *r) -{ - Var *v; - int i; - - v = var + r->varno; - r->regno = 0; - switch(v->etype) { - - default: - diag(Z, "unknown etype %d/%d", bitno(b), v->etype); - break; - - case TCHAR: - case TUCHAR: - case TSHORT: - case TUSHORT: - case TINT: - case TUINT: - case TLONG: - case TULONG: - case TIND: - case TVLONG: - case TUVLONG: - case TARRAY: - i = BtoR(~b); - if(i && r->cost > 0) { - r->regno = i; - return RtoB(i); - } - break; - - case TDOUBLE: - case TFLOAT: - i = BtoF(~b); - if(i && r->cost > 0) { - r->regno = i+NREG; - return FtoB(i); - } - break; - } - return 0; -} - -void -paint1(Reg *r, int bn) -{ - Reg *r1; - Prog *p; - int z; - uint32 bb; - - z = bn/32; - bb = 1L<<(bn%32); - if(r->act.b[z] & bb) - return; - for(;;) { - if(!(r->refbehind.b[z] & bb)) - break; - r1 = r->p1; - if(r1 == R) - break; - if(!(r1->refahead.b[z] & bb)) - break; - if(r1->act.b[z] & bb) - break; - r = r1; - } - - if(LOAD(r) & ~(r->set.b[z]&~(r->use1.b[z]|r->use2.b[z])) & bb) { - change -= CLOAD * r->loop; - if(debug['R'] && debug['v']) - print("%ld%P\tld %B $%d\n", r->loop, - r->prog, blsh(bn), change); - } - for(;;) { - r->act.b[z] |= bb; - p = r->prog; - - if(r->use1.b[z] & bb) { - change += CREF * r->loop; - if(p->to.type == D_FREG && (p->as == AMOVW || p->as == AMOVD)) - change = -CINF; /* cant go Rreg to Freg */ - if(debug['R'] && debug['v']) - print("%ld%P\tu1 %B $%d\n", r->loop, - p, blsh(bn), change); - } - - if((r->use2.b[z]|r->set.b[z]) & bb) { - change += CREF * r->loop; - if(p->from.type == D_FREG && (p->as == AMOVW || p->as == AMOVD)) - change = -CINF; /* cant go Rreg to Freg */ - if(debug['R'] && debug['v']) - print("%ld%P\tu2 %B $%d\n", r->loop, - p, blsh(bn), change); - } - - if(STORE(r) & r->regdiff.b[z] & bb) { - change -= CLOAD * r->loop; - if(debug['R'] && debug['v']) - print("%ld%P\tst %B $%d\n", r->loop, - p, blsh(bn), change); - } - - if(r->refbehind.b[z] & bb) - for(r1 = r->p2; r1 != R; r1 = r1->p2link) - if(r1->refahead.b[z] & bb) - paint1(r1, bn); - - if(!(r->refahead.b[z] & bb)) - break; - r1 = r->s2; - if(r1 != R) - if(r1->refbehind.b[z] & bb) - paint1(r1, bn); - r = r->s1; - if(r == R) - break; - if(r->act.b[z] & bb) - break; - if(!(r->refbehind.b[z] & bb)) - break; - } -} - -uint32 -paint2(Reg *r, int bn) -{ - Reg *r1; - int z; - uint32 bb, vreg; - - z = bn/32; - bb = 1L << (bn%32); - vreg = regbits; - if(!(r->act.b[z] & bb)) - return vreg; - for(;;) { - if(!(r->refbehind.b[z] & bb)) - break; - r1 = r->p1; - if(r1 == R) - break; - if(!(r1->refahead.b[z] & bb)) - break; - if(!(r1->act.b[z] & bb)) - break; - r = r1; - } - for(;;) { - r->act.b[z] &= ~bb; - - vreg |= r->regu; - - if(r->refbehind.b[z] & bb) - for(r1 = r->p2; r1 != R; r1 = r1->p2link) - if(r1->refahead.b[z] & bb) - vreg |= paint2(r1, bn); - - if(!(r->refahead.b[z] & bb)) - break; - r1 = r->s2; - if(r1 != R) - if(r1->refbehind.b[z] & bb) - vreg |= paint2(r1, bn); - r = r->s1; - if(r == R) - break; - if(!(r->act.b[z] & bb)) - break; - if(!(r->refbehind.b[z] & bb)) - break; - } - return vreg; -} - -void -paint3(Reg *r, int bn, int32 rb, int rn) -{ - Reg *r1; - Prog *p; - int z; - uint32 bb; - - z = bn/32; - bb = 1L << (bn%32); - if(r->act.b[z] & bb) - return; - for(;;) { - if(!(r->refbehind.b[z] & bb)) - break; - r1 = r->p1; - if(r1 == R) - break; - if(!(r1->refahead.b[z] & bb)) - break; - if(r1->act.b[z] & bb) - break; - r = r1; - } - - if(LOAD(r) & ~(r->set.b[z] & ~(r->use1.b[z]|r->use2.b[z])) & bb) - addmove(r, bn, rn, 0); - for(;;) { - r->act.b[z] |= bb; - p = r->prog; - - if(r->use1.b[z] & bb) { - if(debug['R']) - print("%P", p); - addreg(&p->from, rn); - if(debug['R']) - print("\t.c%P\n", p); - } - if((r->use2.b[z]|r->set.b[z]) & bb) { - if(debug['R']) - print("%P", p); - addreg(&p->to, rn); - if(debug['R']) - print("\t.c%P\n", p); - } - - if(STORE(r) & r->regdiff.b[z] & bb) - addmove(r, bn, rn, 1); - r->regu |= rb; - - if(r->refbehind.b[z] & bb) - for(r1 = r->p2; r1 != R; r1 = r1->p2link) - if(r1->refahead.b[z] & bb) - paint3(r1, bn, rb, rn); - - if(!(r->refahead.b[z] & bb)) - break; - r1 = r->s2; - if(r1 != R) - if(r1->refbehind.b[z] & bb) - paint3(r1, bn, rb, rn); - r = r->s1; - if(r == R) - break; - if(r->act.b[z] & bb) - break; - if(!(r->refbehind.b[z] & bb)) - break; - } -} - -void -addreg(Addr *a, int rn) -{ - - a->sym = 0; - a->name = D_NONE; - a->type = D_REG; - a->reg = rn; - if(rn >= NREG) { - a->type = D_FREG; - a->reg = rn-NREG; - } -} - -/* - * track register variables including external registers: - * bit reg - * 0 R7 - * 1 R8 - * ... ... - * 21 R28 - */ -int32 -RtoB(int r) -{ - - if(r >= REGMIN && r <= REGMAX) - return 1L << (r-REGMIN); - return 0; -} - -int -BtoR(int32 b) -{ - b &= 0x001fffffL; - if(b == 0) - return 0; - return bitno(b) + REGMIN; -} - -/* - * bit reg - * 22 F17 - * 23 F18 - * ... ... - * 31 F26 - */ -int32 -FtoB(int f) -{ - if(f < FREGMIN || f > FREGEXT) - return 0; - return 1L << (f - FREGMIN + 22); -} - -int -BtoF(int32 b) -{ - - b &= 0xffc00000L; - if(b == 0) - return 0; - return bitno(b) - 22 + FREGMIN; -} diff --git a/src/cmd/9c/sgen.c b/src/cmd/9c/sgen.c deleted file mode 100644 index b03c17267..000000000 --- a/src/cmd/9c/sgen.c +++ /dev/null @@ -1,291 +0,0 @@ -// cmd/9c/sgen.c from Vita Nuova. -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -Prog* -gtext(Sym *s, int32 stkoff) -{ - vlong v; - - v = ((uvlong)argsize(1) << 32) | (stkoff & 0xffffffff); - if((textflag & NOSPLIT) && stkoff >= 128) - yyerror("stack frame too large for NOSPLIT function"); - - gpseudo(ATEXT, s, nodgconst(v, types[TVLONG])); - return p; -} - - -void -noretval(int n) -{ - - if(n & 1) { - gins(ANOP, Z, Z); - p->to.type = D_REG; - p->to.reg = REGRET; - } - if(n & 2) { - gins(ANOP, Z, Z); - p->to.type = D_FREG; - p->to.reg = FREGRET; - } -} - -/* - * calculate addressability as follows - * CONST ==> 20 $value - * NAME ==> 10 name - * REGISTER ==> 11 register - * INDREG ==> 12 *[(reg)+offset] - * &10 ==> 2 $name - * ADD(2, 20) ==> 2 $name+offset - * ADD(3, 20) ==> 3 $(reg)+offset - * &12 ==> 3 $(reg)+offset - * *11 ==> 11 ?? - * *2 ==> 10 name - * *3 ==> 12 *(reg)+offset - * calculate complexity (number of registers) - */ -void -xcom(Node *n) -{ - Node *l, *r; - int v; - - if(n == Z) - return; - l = n->left; - r = n->right; - n->addable = 0; - n->complex = 0; - switch(n->op) { - case OCONST: - n->addable = 20; - return; - - case OREGISTER: - n->addable = 11; - return; - - case OINDREG: - n->addable = 12; - return; - - case ONAME: - n->addable = 10; - return; - - case OADDR: - xcom(l); - if(l->addable == 10) - n->addable = 2; - if(l->addable == 12) - n->addable = 3; - break; - - case OIND: - xcom(l); - if(l->addable == 11) - n->addable = 12; - if(l->addable == 3) - n->addable = 12; - if(l->addable == 2) - n->addable = 10; - break; - - case OADD: - xcom(l); - xcom(r); - if(l->addable == 20) { - if(r->addable == 2) - n->addable = 2; - if(r->addable == 3) - n->addable = 3; - } - if(r->addable == 20) { - if(l->addable == 2) - n->addable = 2; - if(l->addable == 3) - n->addable = 3; - } - break; - - case OASMUL: - case OASLMUL: - xcom(l); - xcom(r); - v = vlog(r); - if(v >= 0) { - n->op = OASASHL; - r->vconst = v; - r->type = types[TINT]; - } - break; - - case OMUL: - case OLMUL: - xcom(l); - xcom(r); - v = vlog(r); - if(v >= 0) { - n->op = OASHL; - r->vconst = v; - r->type = types[TINT]; - } - v = vlog(l); - if(v >= 0) { - n->op = OASHL; - n->left = r; - n->right = l; - r = l; - l = n->left; - r->vconst = v; - r->type = types[TINT]; - simplifyshift(n); - } - break; - - case OASLDIV: - xcom(l); - xcom(r); - v = vlog(r); - if(v >= 0) { - n->op = OASLSHR; - r->vconst = v; - r->type = types[TINT]; - } - break; - - case OLDIV: - xcom(l); - xcom(r); - v = vlog(r); - if(v >= 0) { - n->op = OLSHR; - r->vconst = v; - r->type = types[TINT]; - simplifyshift(n); - } - break; - - case OASLMOD: - xcom(l); - xcom(r); - v = vlog(r); - if(v >= 0) { - n->op = OASAND; - r->vconst--; - } - break; - - case OLMOD: - xcom(l); - xcom(r); - v = vlog(r); - if(v >= 0) { - n->op = OAND; - r->vconst--; - } - break; - - case OLSHR: - case OASHL: - case OASHR: - xcom(l); - xcom(r); - simplifyshift(n); - break; - - default: - if(l != Z) - xcom(l); - if(r != Z) - xcom(r); - break; - } - if(n->addable >= 10) - return; - if(l != Z) - n->complex = l->complex; - if(r != Z) { - if(r->complex == n->complex) - n->complex = r->complex+1; - else - if(r->complex > n->complex) - n->complex = r->complex; - } - if(n->complex == 0) - n->complex++; - -// if(com64(n)) -// return; - - switch(n->op) { - - case OFUNC: - n->complex = FNX; - break; - - case OEQ: - case ONE: - case OLE: - case OLT: - case OGE: - case OGT: - case OHI: - case OHS: - case OLO: - case OLS: - /* - * immediate operators, make const on right - */ - if(l->op == OCONST) { - n->left = r; - n->right = l; - n->op = invrel[relindex(n->op)]; - } - break; - - case OADD: - case OXOR: - case OAND: - case OOR: - /* - * immediate operators, make const on right - */ - if(l->op == OCONST) { - n->left = r; - n->right = l; - } - break; - } -} - diff --git a/src/cmd/9c/swt.c b/src/cmd/9c/swt.c deleted file mode 100644 index a63db60b2..000000000 --- a/src/cmd/9c/swt.c +++ /dev/null @@ -1,407 +0,0 @@ -// cmd/9c/swt.c from Vita Nuova. -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -void -swit1(C1 *q, int nc, int32 def, Node *n) -{ - Node tn, nod; - - regalloc(&nod, n, Z); - /* always signed */ - if(typev[n->type->etype]) - nod.type = types[TVLONG]; - else - nod.type = types[TLONG]; - cgen(n, &nod); - regalloc(&tn, ®node, Z); - swit2(q, nc, def, &nod, &tn); - regfree(&tn); - regfree(&nod); -} - -void -swit2(C1 *q, int nc, int32 def, Node *n, Node *tn) -{ - C1 *r; - int i; - Prog *sp; - - if(nc < 5) { - for(i=0; i<nc; i++) { - if(sval(q->val)) { - gopcode(OEQ, n, Z, nodconst(q->val)); - } else { - gopcode(OSUB, nodconst(q->val), n, tn); - gopcode(OEQ, tn, Z, nodconst(0)); - } - patch(p, q->label); - q++; - } - gbranch(OGOTO); - patch(p, def); - return; - } - i = nc / 2; - r = q+i; - if(sval(r->val)) { - gopcode(OGT, n, Z, nodconst(r->val)); - sp = p; - } else { - gopcode(OSUB, nodconst(r->val), n, tn); - gopcode(OGT, tn, Z, nodconst(0)); - sp = p; - } - gbranch(OGOTO); - p->as = ABEQ; - patch(p, r->label); - swit2(q, i, def, n, tn); - - patch(sp, pc); - swit2(r+1, nc-i-1, def, n, tn); -} - -void -bitload(Node *b, Node *n1, Node *n2, Node *n3, Node *nn) -{ - int sh; - int32 v; - Node *l; - - /* - * n1 gets adjusted/masked value - * n2 gets address of cell - * n3 gets contents of cell - */ - l = b->left; - if(n2 != Z) { - regalloc(n1, l, nn); - reglcgen(n2, l, Z); - regalloc(n3, l, Z); - gopcode(OAS, n2, Z, n3); - gopcode(OAS, n3, Z, n1); - } else { - regalloc(n1, l, nn); - cgen(l, n1); - } - if(b->type->shift == 0 && typeu[b->type->etype]) { - v = ~0 + (1L << b->type->nbits); - gopcode(OAND, nodconst(v), Z, n1); - } else { - sh = 32 - b->type->shift - b->type->nbits; - if(sh > 0) - gopcode(OASHL, nodconst(sh), Z, n1); - sh += b->type->shift; - if(sh > 0) - if(typeu[b->type->etype]) - gopcode(OLSHR, nodconst(sh), Z, n1); - else - gopcode(OASHR, nodconst(sh), Z, n1); - } -} - -void -bitstore(Node *b, Node *n1, Node *n2, Node *n3, Node *nn) -{ - int32 v; - Node nod, *l; - int sh; - - /* - * n1 has adjusted/masked value - * n2 has address of cell - * n3 has contents of cell - */ - l = b->left; - regalloc(&nod, l, Z); - v = ~0 + (1L << b->type->nbits); - gopcode(OAND, nodconst(v), Z, n1); - gopcode(OAS, n1, Z, &nod); - if(nn != Z) - gopcode(OAS, n1, Z, nn); - sh = b->type->shift; - if(sh > 0) - gopcode(OASHL, nodconst(sh), Z, &nod); - v <<= sh; - gopcode(OAND, nodconst(~v), Z, n3); - gopcode(OOR, n3, Z, &nod); - gopcode(OAS, &nod, Z, n2); - - regfree(&nod); - regfree(n1); - regfree(n2); - regfree(n3); -} - -int32 -outstring(char *s, int32 n) -{ - int32 r; - - if(suppress) - return nstring; - r = nstring; - while(n) { - string[mnstring] = *s++; - mnstring++; - nstring++; - if(mnstring >= NSNAME) { - gpseudo(ADATA, symstring, nodconst(0L)); - p->from.offset += nstring - NSNAME; - p->reg = NSNAME; - p->to.type = D_SCONST; - memmove(p->to.u.sval, string, NSNAME); - mnstring = 0; - } - n--; - } - return r; -} - -int -mulcon(Node *n, Node *nn) -{ - Node *l, *r, nod1, nod2; - Multab *m; - int32 v; - int o; - char code[sizeof(m->code)+2], *p; - - if(typefd[n->type->etype]) - return 0; - l = n->left; - r = n->right; - if(l->op == OCONST) { - l = r; - r = n->left; - } - if(r->op != OCONST) - return 0; - v = convvtox(r->vconst, n->type->etype); - if(v != r->vconst) { - if(debug['M']) - print("%L multiply conv: %lld\n", n->lineno, r->vconst); - return 0; - } - m = mulcon0(n, v); - if(!m) { - if(debug['M']) - print("%L multiply table: %lld\n", n->lineno, r->vconst); - return 0; - } - - memmove(code, m->code, sizeof(m->code)); - code[sizeof(m->code)] = 0; - - p = code; - if(p[1] == 'i') - p += 2; - regalloc(&nod1, n, nn); - cgen(l, &nod1); - if(v < 0) - gopcode(ONEG, &nod1, Z, &nod1); - regalloc(&nod2, n, Z); - -loop: - switch(*p) { - case 0: - regfree(&nod2); - gopcode(OAS, &nod1, Z, nn); - regfree(&nod1); - return 1; - case '+': - o = OADD; - goto addsub; - case '-': - o = OSUB; - addsub: /* number is r,n,l */ - v = p[1] - '0'; - r = &nod1; - if(v&4) - r = &nod2; - n = &nod1; - if(v&2) - n = &nod2; - l = &nod1; - if(v&1) - l = &nod2; - gopcode(o, l, n, r); - break; - default: /* op is shiftcount, number is r,l */ - v = p[1] - '0'; - r = &nod1; - if(v&2) - r = &nod2; - l = &nod1; - if(v&1) - l = &nod2; - v = *p - 'a'; - if(v < 0 || v >= 32) { - diag(n, "mulcon unknown op: %c%c", p[0], p[1]); - break; - } - gopcode(OASHL, nodconst(v), l, r); - break; - } - p += 2; - goto loop; -} - -void -sextern(Sym *s, Node *a, int32 o, int32 w) -{ - int32 e, lw; - - for(e=0; e<w; e+=NSNAME) { - lw = NSNAME; - if(w-e < lw) - lw = w-e; - gpseudo(ADATA, s, nodconst(0)); - p->from.offset += o+e; - p->reg = lw; - p->to.type = D_SCONST; - memmove(p->to.u.sval, a->cstring+e, lw); - } -} - -void -gextern(Sym *s, Node *a, int32 o, int32 w) -{ - gpseudo(ADATA, s, a); - p->from.offset += o; - p->reg = w; - if(p->to.type == D_OREG) - p->to.type = D_CONST; -} - -void -outcode(void) -{ - Bprint(&outbuf, "go object %s %s %s\n", getgoos(), getgoarch(), getgoversion()); - if(pragcgobuf.to > pragcgobuf.start) { - Bprint(&outbuf, "\n"); - Bprint(&outbuf, "$$ // exports\n\n"); - Bprint(&outbuf, "$$ // local types\n\n"); - Bprint(&outbuf, "$$ // cgo\n"); - Bprint(&outbuf, "%s", fmtstrflush(&pragcgobuf)); - Bprint(&outbuf, "\n$$\n\n"); - } - Bprint(&outbuf, "!\n"); - - writeobj(ctxt, &outbuf); - lastp = nil; -} - -int32 -align(int32 i, Type *t, int op, int32 *maxalign) -{ - int32 o; - Type *v; - int w, packw; - - o = i; - w = 1; - packw = 0; - switch(op) { - default: - diag(Z, "unknown align opcode %d", op); - break; - - case Asu2: /* padding at end of a struct */ - w = *maxalign; - if(w < 1) - w = 1; - if(packflg) - packw = packflg; - break; - - case Ael1: /* initial allign of struct element */ - for(v=t; v->etype==TARRAY; v=v->link) - ; - if(v->etype == TSTRUCT || v->etype == TUNION) - w = v->align; - else - w = ewidth[v->etype]; - if(w < 1 || w > SZ_VLONG) - fatal(Z, "align"); - if(packflg) - packw = packflg; - break; - - case Ael2: /* width of a struct element */ - o += t->width; - break; - - case Aarg0: /* initial passbyptr argument in arg list */ - if(typesu[t->etype]) { - o = align(o, types[TIND], Aarg1, nil); - o = align(o, types[TIND], Aarg2, nil); - } - break; - - case Aarg1: /* initial align of parameter */ - w = ewidth[t->etype]; - if(w <= 0 || w >= SZ_VLONG) { - w = SZ_VLONG; - break; - } - w = 1; - break; - - case Aarg2: /* width of a parameter */ - o += t->width; - w = t->width; - if(w > SZ_VLONG) - w = SZ_VLONG; - break; - - case Aaut3: /* total align of automatic */ - o = align(o, t, Ael1, nil); - o = align(o, t, Ael2, nil); - break; - } - if(packw != 0 && xround(o, w) != xround(o, packw)) - diag(Z, "#pragma pack changes offset of %T", t); - o = xround(o, w); - if(maxalign && *maxalign < w) - *maxalign = w; - if(debug['A']) - print("align %s %ld %T = %ld\n", bnames[op], i, t, o); - return o; -} - -int32 -maxround(int32 max, int32 v) -{ - v = xround(v, SZ_VLONG); - if(v > max) - return v; - return max; -} diff --git a/src/cmd/9c/txt.c b/src/cmd/9c/txt.c deleted file mode 100644 index e46aba84e..000000000 --- a/src/cmd/9c/txt.c +++ /dev/null @@ -1,1537 +0,0 @@ -// cmd/9c/txt.c from Vita Nuova. -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2008 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2008 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -static int resvreg[nelem(reg)]; - -#define isv(et) ((et) == TVLONG || (et) == TUVLONG || (et) == TIND) - -int thechar = '9'; -char *thestring = "power64"; - -LinkArch *thelinkarch; - -void -linkarchinit(void) -{ - thestring = getgoarch(); - if(strcmp(thestring, "power64le") == 0) - thelinkarch = &linkpower64le; - else - thelinkarch = &linkpower64; -} - - -void -ginit(void) -{ - Type *t; - - dodefine("_64BITREG"); - dodefine("_64BIT"); - exregoffset = REGEXT; - exfregoffset = FREGEXT; - listinit(); - nstring = 0; - mnstring = 0; - nrathole = 0; - pc = 0; - breakpc = -1; - continpc = -1; - cases = C; - lastp = P; - tfield = types[TLONG]; - - typeword = typechlvp; - typecmplx = typesu; - /* TO DO */ - memmove(typechlpv, typechlp, sizeof(typechlpv)); - typechlpv[TVLONG] = 1; - typechlpv[TUVLONG] = 1; - - zprog.link = P; - zprog.as = AGOK; - zprog.reg = NREG; - zprog.from.type = D_NONE; - zprog.from.name = D_NONE; - zprog.from.reg = NREG; - zprog.from3 = zprog.from; - zprog.to = zprog.from; - - regnode.op = OREGISTER; - regnode.class = CEXREG; - regnode.reg = 0; - regnode.complex = 0; - regnode.addable = 11; - regnode.type = types[TLONG]; - - qregnode = regnode; - qregnode.type = types[TVLONG]; - - constnode.op = OCONST; - constnode.class = CXXX; - constnode.complex = 0; - constnode.addable = 20; - constnode.type = types[TLONG]; - - vconstnode = constnode; - vconstnode.type = types[TVLONG]; - - fconstnode.op = OCONST; - fconstnode.class = CXXX; - fconstnode.complex = 0; - fconstnode.addable = 20; - fconstnode.type = types[TDOUBLE]; - - nodsafe = new(ONAME, Z, Z); - nodsafe->sym = slookup(".safe"); - nodsafe->type = types[TINT]; - nodsafe->etype = types[TINT]->etype; - nodsafe->class = CAUTO; - complex(nodsafe); - - t = typ(TARRAY, types[TCHAR]); - symrathole = slookup(".rathole"); - symrathole->class = CGLOBL; - symrathole->type = t; - - nodrat = new(ONAME, Z, Z); - nodrat->sym = symrathole; - nodrat->type = types[TIND]; - nodrat->etype = TVOID; - nodrat->class = CGLOBL; - complex(nodrat); - nodrat->type = t; - - nodret = new(ONAME, Z, Z); - nodret->sym = slookup(".ret"); - nodret->type = types[TIND]; - nodret->etype = TIND; - nodret->class = CPARAM; - nodret = new(OIND, nodret, Z); - complex(nodret); - - com64init(); - - memset(reg, 0, sizeof(reg)); - reg[REGZERO] = 1; /* don't use */ - reg[REGTMP] = 1; - reg[FREGCVI+NREG] = 1; - reg[FREGZERO+NREG] = 1; - reg[FREGHALF+NREG] = 1; - reg[FREGONE+NREG] = 1; - reg[FREGTWO+NREG] = 1; - memmove(resvreg, reg, sizeof(reg)); -} - -void -gclean(void) -{ - int i; - Sym *s; - - for(i=0; i<NREG; i++) - if(reg[i] && !resvreg[i]) - diag(Z, "reg %d left allocated", i); - for(i=NREG; i<NREG+NREG; i++) - if(reg[i] && !resvreg[i]) - diag(Z, "freg %d left allocated", i-NREG); - while(mnstring) - outstring("", 1L); - symstring->type->width = nstring; - symrathole->type->width = nrathole; - for(i=0; i<NHASH; i++) - for(s = hash[i]; s != S; s = s->link) { - if(s->type == T) - continue; - if(s->type->width == 0) - continue; - if(s->class != CGLOBL && s->class != CSTATIC) - continue; - if(s->type == types[TENUM]) - continue; - gpseudo(AGLOBL, s, nodconst(s->type->width)); - } - nextpc(); - p->as = AEND; - outcode(); -} - -void -nextpc(void) -{ - Plist *pl; - - p = alloc(sizeof(*p)); - *p = zprog; - p->lineno = nearln; - p->pc = pc; - pc++; - if(lastp == P) { - pl = linknewplist(ctxt); - pl->firstpc = p; - } else - lastp->link = p; - lastp = p; -} - -void -gargs(Node *n, Node *tn1, Node *tn2) -{ - int32 regs; - Node fnxargs[20], *fnxp; - - regs = cursafe; - - fnxp = fnxargs; - garg1(n, tn1, tn2, 0, &fnxp); /* compile fns to temps */ - - curarg = 0; - fnxp = fnxargs; - garg1(n, tn1, tn2, 1, &fnxp); /* compile normal args and temps */ - - cursafe = regs; -} - -void -garg1(Node *n, Node *tn1, Node *tn2, int f, Node **fnxp) -{ - Node nod; - - if(n == Z) - return; - if(n->op == OLIST) { - garg1(n->left, tn1, tn2, f, fnxp); - garg1(n->right, tn1, tn2, f, fnxp); - return; - } - if(f == 0) { - if(n->complex >= FNX) { - regsalloc(*fnxp, n); - nod = znode; - nod.op = OAS; - nod.left = *fnxp; - nod.right = n; - nod.type = n->type; - cgen(&nod, Z); - (*fnxp)++; - } - return; - } - if(typesu[n->type->etype]) { - regaalloc(tn2, n); - if(n->complex >= FNX) { - sugen(*fnxp, tn2, n->type->width); - (*fnxp)++; - } else - sugen(n, tn2, n->type->width); - return; - } - if(REGARG>=0 && curarg == 0 && typechlpv[n->type->etype]) { - regaalloc1(tn1, n); - if(n->complex >= FNX) { - cgen(*fnxp, tn1); - (*fnxp)++; - } else - cgen(n, tn1); - return; - } - if(vconst(n) == 0) { - regaalloc(tn2, n); - gopcode(OAS, n, Z, tn2); - return; - } - regalloc(tn1, n, Z); - if(n->complex >= FNX) { - cgen(*fnxp, tn1); - (*fnxp)++; - } else - cgen(n, tn1); - regaalloc(tn2, n); - gopcode(OAS, tn1, Z, tn2); - regfree(tn1); -} - -Node* -nod32const(vlong v) -{ - constnode.vconst = v & MASK(32); - return &constnode; -} - -Node* -nodgconst(vlong v, Type *t) -{ - if(!typev[t->etype]) - return nodconst((int32)v); - vconstnode.vconst = v; - return &vconstnode; -} - -Node* -nodconst(int32 v) -{ - constnode.vconst = v; - return &constnode; -} - -Node* -nodfconst(double d) -{ - fconstnode.fconst = d; - return &fconstnode; -} - -void -nodreg(Node *n, Node *nn, int reg) -{ - *n = qregnode; - n->reg = reg; - n->type = nn->type; - n->lineno = nn->lineno; -} - -void -regret(Node *n, Node *nn, Type *t, int mode) -{ - int r; - - if(mode == 0 || hasdotdotdot(t) || nn->type->width == 0) { - r = REGRET; - if(typefd[nn->type->etype]) - r = FREGRET+NREG; - nodreg(n, nn, r); - reg[r]++; - return; - } - - if(mode == 1) { - // fetch returned value after call. - // already called gargs, so curarg is set. - curarg = (curarg+7) & ~7; - regaalloc(n, nn); - return; - } - - if(mode == 2) { - // store value to be returned. - // must compute arg offset. - if(t->etype != TFUNC) - fatal(Z, "bad regret func %T", t); - *n = *nn; - n->op = ONAME; - n->class = CPARAM; - n->sym = slookup(".ret"); - n->complex = nodret->complex; - n->addable = 20; - n->xoffset = argsize(0); - return; - } - - fatal(Z, "bad regret"); -} - -void -regalloc(Node *n, Node *tn, Node *o) -{ - int i, j; - static int lasti; - - switch(tn->type->etype) { - case TCHAR: - case TUCHAR: - case TSHORT: - case TUSHORT: - case TINT: - case TUINT: - case TLONG: - case TULONG: - case TVLONG: - case TUVLONG: - case TIND: - if(o != Z && o->op == OREGISTER) { - i = o->reg; - if(i > 0 && i < NREG) - goto out; - } - j = lasti + REGRET+1; - for(i=REGRET+1; i<NREG; i++) { - if(j >= NREG) - j = REGRET+1; - if(reg[j] == 0) { - i = j; - goto out; - } - j++; - } - diag(tn, "out of fixed registers"); - goto err; - - case TFLOAT: - case TDOUBLE: - if(o != Z && o->op == OREGISTER) { - i = o->reg; - if(i >= NREG && i < NREG+NREG) - goto out; - } - j = lasti + NREG; - for(i=NREG; i<NREG+NREG; i++) { - if(j >= NREG+NREG) - j = NREG; - if(reg[j] == 0) { - i = j; - goto out; - } - j++; - } - diag(tn, "out of float registers"); - goto err; - } - diag(tn, "unknown type in regalloc: %T", tn->type); -err: - i = 0; -out: - if(i) - reg[i]++; - lasti++; - if(lasti >= 5) - lasti = 0; - nodreg(n, tn, i); -} - -void -regialloc(Node *n, Node *tn, Node *o) -{ - Node nod; - - nod = *tn; - nod.type = types[TIND]; - regalloc(n, &nod, o); -} - -void -regfree(Node *n) -{ - int i; - - i = 0; - if(n->op != OREGISTER && n->op != OINDREG) - goto err; - i = n->reg; - if(i < 0 || i >= sizeof(reg)) - goto err; - if(reg[i] <= 0) - goto err; - reg[i]--; - return; -err: - diag(n, "error in regfree: %d", i); -} - -void -regsalloc(Node *n, Node *nn) -{ - cursafe = align(cursafe, nn->type, Aaut3, nil); - maxargsafe = maxround(maxargsafe, cursafe+curarg); - *n = *nodsafe; - n->xoffset = -(stkoff + cursafe); - n->type = nn->type; - n->etype = nn->type->etype; - n->lineno = nn->lineno; -} - -void -regaalloc1(Node *n, Node *nn) -{ - if(REGARG < 0) - return; - nodreg(n, nn, REGARG); - reg[REGARG]++; - curarg = align(curarg, nn->type, Aarg1, nil); - curarg = align(curarg, nn->type, Aarg2, nil); - maxargsafe = maxround(maxargsafe, cursafe+curarg); -} - -void -regaalloc(Node *n, Node *nn) -{ - curarg = align(curarg, nn->type, Aarg1, nil); - *n = *nn; - n->op = OINDREG; - n->reg = REGSP; - n->xoffset = curarg + SZ_VLONG; - n->complex = 0; - n->addable = 20; - curarg = align(curarg, nn->type, Aarg2, nil); - maxargsafe = maxround(maxargsafe, cursafe+curarg); -} - -void -regind(Node *n, Node *nn) -{ - - if(n->op != OREGISTER) { - diag(n, "regind not OREGISTER"); - return; - } - n->op = OINDREG; - n->type = nn->type; -} - -void -raddr(Node *n, Prog *p) -{ - Addr a; - - naddr(n, &a); - if(R0ISZERO && a.type == D_CONST && a.offset == 0) { - a.type = D_REG; - a.reg = REGZERO; - } - if(a.type != D_REG && a.type != D_FREG) { - if(n) - diag(n, "bad in raddr: %O", n->op); - else - diag(n, "bad in raddr: <null>"); - p->reg = NREG; - } else - p->reg = a.reg; -} - -void -naddr(Node *n, Addr *a) -{ - int32 v; - - a->type = D_NONE; - if(n == Z) - return; - switch(n->op) { - default: - bad: - prtree(n, "naddr"); - diag(n, "%L: !bad in naddr: %O", n->lineno, n->op); - break; - - case OREGISTER: - a->type = D_REG; - a->sym = nil; - a->reg = n->reg; - if(a->reg >= NREG) { - a->type = D_FREG; - a->reg -= NREG; - } - break; - - case OIND: - naddr(n->left, a); - if(a->type == D_REG) { - a->type = D_OREG; - break; - } - if(a->type == D_CONST) { - a->type = D_OREG; - break; - } - goto bad; - - case OINDREG: - a->type = D_OREG; - a->sym = nil; - a->offset = n->xoffset; - a->reg = n->reg; - break; - - case ONAME: - a->etype = n->etype; - a->type = D_OREG; - a->name = D_STATIC; - a->sym = linksym(n->sym); - a->offset = n->xoffset; - if(n->class == CSTATIC) - break; - if(n->class == CEXTERN || n->class == CGLOBL) { - a->name = D_EXTERN; - break; - } - if(n->class == CAUTO) { - a->name = D_AUTO; - break; - } - if(n->class == CPARAM) { - a->name = D_PARAM; - break; - } - goto bad; - - case OCONST: - a->sym = nil; - a->reg = NREG; - if(typefd[n->type->etype]) { - a->type = D_FCONST; - a->u.dval = n->fconst; - } else { - a->type = D_CONST; - a->offset = n->vconst; - } - break; - - case OADDR: - naddr(n->left, a); - if(a->type == D_OREG) { - a->type = D_CONST; - break; - } - goto bad; - - case OADD: - if(n->left->op == OCONST) { - naddr(n->left, a); - v = a->offset; - naddr(n->right, a); - } else { - naddr(n->right, a); - v = a->offset; - naddr(n->left, a); - } - a->offset += v; - break; - - } -} - -void -fop(int as, int f1, int f2, Node *t) -{ - Node nod1, nod2, nod3; - - nodreg(&nod1, t, NREG+f1); - nodreg(&nod2, t, NREG+f2); - regalloc(&nod3, t, t); - gopcode(as, &nod1, &nod2, &nod3); - gmove(&nod3, t); - regfree(&nod3); -} - -void -gmove(Node *f, Node *t) -{ - int ft, tt, a; - Node nod, fxc0, fxc1, fxc2, fxrat; - Prog *p1; - double d; - - ft = f->type->etype; - tt = t->type->etype; - - if(ft == TDOUBLE && f->op == OCONST) { - d = f->fconst; - if(d == 0.0) { - a = FREGZERO; - goto ffreg; - } - if(d == 0.5) { - a = FREGHALF; - goto ffreg; - } - if(d == 1.0) { - a = FREGONE; - goto ffreg; - } - if(d == 2.0) { - a = FREGTWO; - goto ffreg; - } - if(d == -.5) { - fop(OSUB, FREGHALF, FREGZERO, t); - return; - } - if(d == -1.0) { - fop(OSUB, FREGONE, FREGZERO, t); - return; - } - if(d == -2.0) { - fop(OSUB, FREGTWO, FREGZERO, t); - return; - } - if(d == 1.5) { - fop(OADD, FREGONE, FREGHALF, t); - return; - } - if(d == 2.5) { - fop(OADD, FREGTWO, FREGHALF, t); - return; - } - if(d == 3.0) { - fop(OADD, FREGTWO, FREGONE, t); - return; - } - } - if(ft == TFLOAT && f->op == OCONST) { - d = f->fconst; - if(d == 0) { - a = FREGZERO; - ffreg: - nodreg(&nod, f, NREG+a); - gmove(&nod, t); - return; - } - } - /* - * a load -- - * put it into a register then - * worry what to do with it. - */ - if(f->op == ONAME || f->op == OINDREG || f->op == OIND) { - switch(ft) { - default: - if(ewidth[ft] == 4){ - if(typeu[ft]) - a = AMOVWZ; - else - a = AMOVW; - }else - a = AMOVD; - break; - case TINT: - a = AMOVW; - break; - case TUINT: - a = AMOVWZ; - break; - case TFLOAT: - a = AFMOVS; - break; - case TDOUBLE: - a = AFMOVD; - break; - case TCHAR: - a = AMOVB; - break; - case TUCHAR: - a = AMOVBZ; - break; - case TSHORT: - a = AMOVH; - break; - case TUSHORT: - a = AMOVHZ; - break; - } - regalloc(&nod, f, t); - gins(a, f, &nod); - gmove(&nod, t); - regfree(&nod); - return; - } - - /* - * a store -- - * put it into a register then - * store it. - */ - if(t->op == ONAME || t->op == OINDREG || t->op == OIND) { - switch(tt) { - default: - if(ewidth[tt] == 4) - a = AMOVW; - else - a = AMOVD; - break; - case TINT: - a = AMOVW; - break; - case TUINT: - a = AMOVWZ; - break; - case TUCHAR: - a = AMOVBZ; - break; - case TCHAR: - a = AMOVB; - break; - case TUSHORT: - a = AMOVHZ; - break; - case TSHORT: - a = AMOVH; - break; - case TFLOAT: - a = AFMOVS; - break; - case TDOUBLE: - a = AFMOVD; - break; - } - if(!typefd[ft] && vconst(f) == 0) { - gins(a, f, t); - return; - } - if(ft == tt) - regalloc(&nod, t, f); - else - regalloc(&nod, t, Z); - gmove(f, &nod); - gins(a, &nod, t); - regfree(&nod); - return; - } - - /* - * type x type cross table - */ - a = AGOK; - switch(ft) { - case TDOUBLE: - case TFLOAT: - switch(tt) { - case TDOUBLE: - a = AFMOVD; - if(ft == TFLOAT) - a = AFMOVS; /* AFMOVSD */ - break; - case TFLOAT: - a = AFRSP; - if(ft == TFLOAT) - a = AFMOVS; - break; - case TINT: - case TUINT: - case TLONG: - case TULONG: - case TIND: - case TSHORT: - case TUSHORT: - case TCHAR: - case TUCHAR: - /* BUG: not right for unsigned int32 */ - regalloc(&nod, f, Z); /* should be type float */ - regsalloc(&fxrat, f); - gins(AFCTIWZ, f, &nod); - gins(AFMOVD, &nod, &fxrat); - regfree(&nod); - fxrat.type = nodrat->type; - fxrat.etype = nodrat->etype; - fxrat.xoffset += 4; - gins(AMOVW, &fxrat, t); /* TO DO */ - gmove(t, t); - return; - case TVLONG: - case TUVLONG: - /* BUG: not right for unsigned int32 */ - regalloc(&nod, f, Z); /* should be type float */ - regsalloc(&fxrat, f); - gins(AFCTIDZ, f, &nod); - gins(AFMOVD, &nod, &fxrat); - regfree(&nod); - fxrat.type = nodrat->type; - fxrat.etype = nodrat->etype; - gins(AMOVD, &fxrat, t); - gmove(t, t); - return; - } - break; - case TINT: - case TUINT: - case TLONG: - case TULONG: - switch(tt) { - case TDOUBLE: - case TFLOAT: - goto fxtofl; - case TINT: - case TUINT: - case TLONG: - case TULONG: - case TSHORT: - case TUSHORT: - case TCHAR: - case TUCHAR: - if(typeu[tt]) - a = AMOVWZ; - else - a = AMOVW; - break; - case TVLONG: - case TUVLONG: - case TIND: - a = AMOVD; - break; - } - break; - case TVLONG: - case TUVLONG: - case TIND: - switch(tt) { - case TDOUBLE: - case TFLOAT: - goto fxtofl; - case TINT: - case TUINT: - case TLONG: - case TULONG: - case TVLONG: - case TUVLONG: - case TIND: - case TSHORT: - case TUSHORT: - case TCHAR: - case TUCHAR: - a = AMOVD; /* TO DO: conversion done? */ - break; - } - break; - case TSHORT: - switch(tt) { - case TDOUBLE: - case TFLOAT: - goto fxtofl; - case TINT: - case TUINT: - case TLONG: - case TULONG: - case TVLONG: - case TUVLONG: - case TIND: - a = AMOVH; - break; - case TSHORT: - case TUSHORT: - case TCHAR: - case TUCHAR: - a = AMOVD; - break; - } - break; - case TUSHORT: - switch(tt) { - case TDOUBLE: - case TFLOAT: - goto fxtofl; - case TINT: - case TUINT: - case TLONG: - case TULONG: - case TVLONG: - case TUVLONG: - case TIND: - a = AMOVHZ; - break; - case TSHORT: - case TUSHORT: - case TCHAR: - case TUCHAR: - a = AMOVD; - break; - } - break; - case TCHAR: - switch(tt) { - case TDOUBLE: - case TFLOAT: - goto fxtofl; - case TINT: - case TUINT: - case TLONG: - case TULONG: - case TVLONG: - case TUVLONG: - case TIND: - case TSHORT: - case TUSHORT: - a = AMOVB; - break; - case TCHAR: - case TUCHAR: - a = AMOVD; - break; - } - break; - case TUCHAR: - switch(tt) { - case TDOUBLE: - case TFLOAT: - fxtofl: - /* - * rat[0] = 0x43300000; rat[1] = f^0x80000000; - * t = *(double*)rat - FREGCVI; - * is-unsigned(t) => if(t<0) t += 2^32; - * could be streamlined for int-to-float - */ - regalloc(&fxc0, f, Z); - regalloc(&fxc2, f, Z); - regsalloc(&fxrat, t); /* should be type float */ - gins(AMOVW, nodconst(0x43300000L), &fxc0); - gins(AMOVW, f, &fxc2); - gins(AXOR, nodconst(0x80000000L), &fxc2); - if(ctxt->arch->endian == BigEndian) { - gins(AMOVW, &fxc0, &fxrat); - fxc1 = fxrat; - fxc1.type = nodrat->type; - fxc1.etype = nodrat->etype; - fxc1.xoffset += SZ_LONG; - gins(AMOVW, &fxc2, &fxc1); - } else { - gins(AMOVW, &fxc2, &fxrat); - fxc1 = fxrat; - fxc1.type = nodrat->type; - fxc1.etype = nodrat->etype; - fxc1.xoffset += SZ_LONG; - gins(AMOVW, &fxc0, &fxc1); - } - regfree(&fxc2); - regfree(&fxc0); - regalloc(&nod, t, t); /* should be type float */ - gins(AFMOVD, &fxrat, &nod); - nodreg(&fxc1, t, NREG+FREGCVI); - gins(AFSUB, &fxc1, &nod); - a = AFMOVD; - if(tt == TFLOAT) - a = AFRSP; - gins(a, &nod, t); - regfree(&nod); - if(ft == TULONG) { - regalloc(&nod, t, Z); - if(tt == TFLOAT) { - gins(AFCMPU, t, Z); - p->to.type = D_FREG; - p->to.reg = FREGZERO; - gins(ABGE, Z, Z); - p1 = p; - gins(AFMOVS, nodfconst(4294967296.), &nod); - gins(AFADDS, &nod, t); - } else { - gins(AFCMPU, t, Z); - p->to.type = D_FREG; - p->to.reg = FREGZERO; - gins(ABGE, Z, Z); - p1 = p; - gins(AFMOVD, nodfconst(4294967296.), &nod); - gins(AFADD, &nod, t); - } - patch(p1, pc); - regfree(&nod); - } - return; - case TINT: - case TUINT: - case TLONG: - case TULONG: - case TVLONG: - case TUVLONG: - case TIND: - case TSHORT: - case TUSHORT: - a = AMOVBZ; - break; - case TCHAR: - case TUCHAR: - a = AMOVD; - break; - } - break; - } - if(a == AGOK) - diag(Z, "bad opcode in gmove %T -> %T", f->type, t->type); - if(a == AMOVD || (a == AMOVW || a == AMOVWZ) && ewidth[ft] == ewidth[tt] || a == AFMOVS || a == AFMOVD) - if(samaddr(f, t)) - return; - gins(a, f, t); -} - -void -gins(int a, Node *f, Node *t) -{ - - nextpc(); - p->as = a; - if(f != Z) - naddr(f, &p->from); - if(t != Z) - naddr(t, &p->to); - if(debug['g']) - print("%P\n", p); -} - -void -gopcode(int o, Node *f1, Node *f2, Node *t) -{ - int a, et; - Addr ta; - int uns; - - uns = 0; - et = TLONG; - if(f1 != Z && f1->type != T) { - if(f1->op == OCONST && t != Z && t->type != T) - et = t->type->etype; - else - et = f1->type->etype; - } - a = AGOK; - switch(o) { - case OAS: - gmove(f1, t); - return; - - case OASADD: - case OADD: - a = AADD; - if(et == TFLOAT) - a = AFADDS; - else - if(et == TDOUBLE) - a = AFADD; - break; - - case OASSUB: - case OSUB: - a = ASUB; - if(et == TFLOAT) - a = AFSUBS; - else - if(et == TDOUBLE) - a = AFSUB; - break; - - case OASOR: - case OOR: - a = AOR; - break; - - case OASAND: - case OAND: - a = AAND; - if(f1->op == OCONST) - a = AANDCC; - break; - - case OASXOR: - case OXOR: - a = AXOR; - break; - - case OASLSHR: - case OLSHR: - a = ASRW; - if(isv(et)) - a = ASRD; - break; - - case OASASHR: - case OASHR: - a = ASRAW; - if(isv(et)) - a = ASRAD; - break; - - case OASASHL: - case OASHL: - a = ASLW; - if(isv(et)) - a = ASLD; - break; - - case OFUNC: - a = ABL; - break; - - case OASLMUL: - case OLMUL: - case OASMUL: - case OMUL: - if(et == TFLOAT) { - a = AFMULS; - break; - } else - if(et == TDOUBLE) { - a = AFMUL; - break; - } - a = AMULLW; - if(isv(et)) - a = AMULLD; - break; - - case OASDIV: - case ODIV: - if(et == TFLOAT) { - a = AFDIVS; - break; - } else - if(et == TDOUBLE) { - a = AFDIV; - break; - } else - a = ADIVW; - if(isv(et)) - a = ADIVD; - break; - - case OASMOD: - case OMOD: - a = AREM; - if(isv(et)) - a = AREMD; - break; - - case OASLMOD: - case OLMOD: - a = AREMU; - if(isv(et)) - a = AREMDU; - break; - - case OASLDIV: - case OLDIV: - a = ADIVWU; - if(isv(et)) - a = ADIVDU; - break; - - case OCOM: - a = ANOR; - break; - - case ONEG: - a = ANEG; - if(et == TFLOAT || et == TDOUBLE) - a = AFNEG; - break; - - case OEQ: - a = ABEQ; - goto cmp; - - case ONE: - a = ABNE; - goto cmp; - - case OLT: - a = ABLT; - goto cmp; - - case OLE: - a = ABLE; - goto cmp; - - case OGE: - a = ABGE; - goto cmp; - - case OGT: - a = ABGT; - goto cmp; - - case OLO: - a = ABLT; - goto cmpu; - - case OLS: - a = ABLE; - goto cmpu; - - case OHS: - a = ABGE; - goto cmpu; - - case OHI: - a = ABGT; - goto cmpu; - - cmpu: - uns = 1; - cmp: - nextpc(); - switch(et){ - case TINT: - case TLONG: - p->as = ACMPW; - break; - case TUINT: - case TULONG: - p->as = ACMPWU; - break; - case TFLOAT: - case TDOUBLE: - p->as = AFCMPU; - break; - default: - p->as = uns? ACMPU: ACMP; - break; - } - if(f1 != Z) - naddr(f1, &p->from); - if(t != Z) - naddr(t, &p->to); - if(f1 == Z || t == Z || f2 != Z) - diag(Z, "bad cmp in gopcode %O", o); - if(debug['g']) - print("%P\n", p); - f1 = Z; - f2 = Z; - t = Z; - break; - } - if(a == AGOK) - diag(Z, "bad in gopcode %O", o); - nextpc(); - p->as = a; - if(f1 != Z) - naddr(f1, &p->from); - if(f2 != Z) { - naddr(f2, &ta); - p->reg = ta.reg; - if(ta.type == D_CONST && ta.offset == 0) { - if(R0ISZERO) - p->reg = REGZERO; - else - diag(Z, "REGZERO in gopcode %O", o); - } - } - if(t != Z) - naddr(t, &p->to); - if(debug['g']) - print("%P\n", p); -} - -int -samaddr(Node *f, Node *t) -{ - return f->op == OREGISTER && t->op == OREGISTER && f->reg == t->reg; -} - -void -gbranch(int o) -{ - int a; - - a = AGOK; - switch(o) { - case ORETURN: - a = ARETURN; - break; - case OGOTO: - a = ABR; - break; - } - nextpc(); - if(a == AGOK) { - diag(Z, "bad in gbranch %O", o); - nextpc(); - } - p->as = a; -} - -void -patch(Prog *op, int32 pc) -{ - - op->to.offset = pc; - op->to.type = D_BRANCH; -} - -void -gpseudo(int a, Sym *s, Node *n) -{ - - nextpc(); - p->as = a; - p->from.type = D_OREG; - p->from.sym = linksym(s); - - switch(a) { - case ATEXT: - p->reg = textflag; - textflag = 0; - break; - case AGLOBL: - p->reg = s->dataflag; - break; - } - - p->from.name = D_EXTERN; - if(s->class == CSTATIC) - p->from.name = D_STATIC; - naddr(n, &p->to); - if(a == ADATA || a == AGLOBL) - pc--; -} - -int -sval(int32 v) -{ - - if(v >= -(1<<15) && v < (1<<15)) - return 1; - return 0; -} - -void -gpcdata(int index, int value) -{ - Node n1; - - n1 = *nodconst(index); - gins(APCDATA, &n1, nodconst(value)); -} - -void -gprefetch(Node *n) -{ - // TODO(minux) - USED(n); - /* - Node n1; - - regalloc(&n1, n, Z); - gmove(n, &n1); - n1.op = OINDREG; - gins(ADCBT, &n1, Z); - regfree(&n1); - */ -} - - -int -sconst(Node *n) -{ - vlong vv; - - if(n->op == OCONST) { - if(!typefd[n->type->etype]) { - vv = n->vconst; - if(vv >= -(((vlong)1)<<15) && vv < (((vlong)1)<<15)) - return 1; - } - } - return 0; -} - -int -uconst(Node *n) -{ - vlong vv; - - if(n->op == OCONST) { - if(!typefd[n->type->etype]) { - vv = n->vconst; - if(vv >= 0 && vv < (((vlong)1)<<16)) - return 1; - } - } - return 0; -} - -int -immconst(Node *n) -{ - vlong v; - - if(n->op != OCONST || typefd[n->type->etype]) - return 0; - v = n->vconst; - if((v & 0xFFFF) == 0) - v >>= 16; - if(v >= 0 && v < ((vlong)1<<16)) - return 1; - if(v >= -((vlong)1<<15) && v <= ((vlong)1<<15)) - return 1; - return 0; -} - -int32 -exreg(Type *t) -{ - int32 o; - - if(typechlpv[t->etype]) { - if(exregoffset <= 3) - return 0; - o = exregoffset; - exregoffset--; - return o; - } - if(typefd[t->etype]) { - if(exfregoffset <= 16) - return 0; - o = exfregoffset + NREG; - exfregoffset--; - return o; - } - return 0; -} - -schar ewidth[NTYPE] = -{ - -1, /* [TXXX] */ - SZ_CHAR, /* [TCHAR] */ - SZ_CHAR, /* [TUCHAR] */ - SZ_SHORT, /* [TSHORT] */ - SZ_SHORT, /* [TUSHORT] */ - SZ_INT, /* [TINT] */ - SZ_INT, /* [TUINT] */ - SZ_LONG, /* [TLONG] */ - SZ_LONG, /* [TULONG] */ - SZ_VLONG, /* [TVLONG] */ - SZ_VLONG, /* [TUVLONG] */ - SZ_FLOAT, /* [TFLOAT] */ - SZ_DOUBLE, /* [TDOUBLE] */ - SZ_IND, /* [TIND] */ - 0, /* [TFUNC] */ - -1, /* [TARRAY] */ - 0, /* [TVOID] */ - -1, /* [TSTRUCT] */ - -1, /* [TUNION] */ - SZ_INT, /* [TENUM] */ -}; -int32 ncast[NTYPE] = -{ - 0, /* [TXXX] */ - BCHAR|BUCHAR, /* [TCHAR] */ - BCHAR|BUCHAR, /* [TUCHAR] */ - BSHORT|BUSHORT, /* [TSHORT] */ - BSHORT|BUSHORT, /* [TUSHORT] */ - BINT|BUINT|BLONG|BULONG, /* [TINT] */ - BINT|BUINT|BLONG|BULONG, /* [TUINT] */ - BINT|BUINT|BLONG|BULONG, /* [TLONG] */ - BINT|BUINT|BLONG|BULONG, /* [TULONG] */ - BVLONG|BUVLONG|BIND, /* [TVLONG] */ - BVLONG|BUVLONG|BIND, /* [TUVLONG] */ - BFLOAT, /* [TFLOAT] */ - BDOUBLE, /* [TDOUBLE] */ - BVLONG|BUVLONG|BIND, /* [TIND] */ - 0, /* [TFUNC] */ - 0, /* [TARRAY] */ - 0, /* [TVOID] */ - BSTRUCT, /* [TSTRUCT] */ - BUNION, /* [TUNION] */ - 0, /* [TENUM] */ -}; diff --git a/src/cmd/cc/Makefile b/src/cmd/cc/Makefile deleted file mode 100644 index 34df31d6f..000000000 --- a/src/cmd/cc/Makefile +++ /dev/null @@ -1,10 +0,0 @@ -# Copyright 2012 The Go Authors. All rights reserved. -# Use of this source code is governed by a BSD-style -# license that can be found in the LICENSE file. - -include ../../Make.dist - -install: y.tab.h - -y.tab.h: cc.y - LANG=C LANGUAGE=en_US.UTF8 bison -d -v -y cc.y diff --git a/src/cmd/cc/acid.c b/src/cmd/cc/acid.c deleted file mode 100644 index 23147e519..000000000 --- a/src/cmd/cc/acid.c +++ /dev/null @@ -1,344 +0,0 @@ -// Inferno utils/cc/acid.c -// http://code.google.com/p/inferno-os/source/browse/utils/cc/acid.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <u.h> -#include "cc.h" - -static char *kwd[] = -{ - "$adt", "$aggr", "$append", "$complex", "$defn", - "$delete", "$do", "$else", "$eval", "$head", "$if", - "$local", "$loop", "$return", "$tail", "$then", - "$union", "$whatis", "$while", -}; - -char* -amap(char *s) -{ - int i, bot, top, new; - - bot = 0; - top = bot + nelem(kwd) - 1; - while(bot <= top){ - new = bot + (top - bot)/2; - i = strcmp(kwd[new]+1, s); - if(i == 0) - return kwd[new]; - - if(i < 0) - bot = new + 1; - else - top = new - 1; - } - return s; -} - -Sym* -acidsue(Type *t) -{ - int h; - Sym *s; - - if(t != T) - for(h=0; h<nelem(hash); h++) - for(s = hash[h]; s != S; s = s->link) - if(s->suetag && s->suetag->link == t) - return s; - return 0; -} - -Sym* -acidfun(Type *t) -{ - int h; - Sym *s; - - for(h=0; h<nelem(hash); h++) - for(s = hash[h]; s != S; s = s->link) - if(s->type == t) - return s; - return 0; -} - -char acidchar[NTYPE]; -Init acidcinit[] = -{ - TCHAR, 'C', 0, - TUCHAR, 'b', 0, - TSHORT, 'd', 0, - TUSHORT, 'u', 0, - TLONG, 'D', 0, - TULONG, 'U', 0, - TVLONG, 'V', 0, - TUVLONG, 'W', 0, - TFLOAT, 'f', 0, - TDOUBLE, 'F', 0, - TARRAY, 'a', 0, - TIND, 'X', 0, - -1, 0, 0, -}; - -static void -acidinit(void) -{ - Init *p; - - for(p=acidcinit; p->code >= 0; p++) - acidchar[p->code] = p->value; - - acidchar[TINT] = acidchar[TLONG]; - acidchar[TUINT] = acidchar[TULONG]; - if(types[TINT]->width != types[TLONG]->width) { - acidchar[TINT] = acidchar[TSHORT]; - acidchar[TUINT] = acidchar[TUSHORT]; - if(types[TINT]->width != types[TSHORT]->width) - warn(Z, "acidmember int not long or short"); - } - if(types[TIND]->width == types[TUVLONG]->width) - acidchar[TIND] = 'Y'; - -} - -void -acidmember(Type *t, int32 off, int flag) -{ - Sym *s, *s1; - Type *l; - static int acidcharinit = 0; - - if(acidcharinit == 0) { - acidinit(); - acidcharinit = 1; - } - s = t->sym; - switch(t->etype) { - default: - Bprint(&outbuf, " T%d\n", t->etype); - break; - - case TIND: - if(s == S) - break; - l = t->link; - if(flag) { - if(typesu[l->etype]) { - s1 = acidsue(l->link); - if(s1 != S) { - Bprint(&outbuf, " 'A' %s %d %s;\n", - amap(s1->name), - t->offset+off, amap(s->name)); - break; - } - } - } else { - l = t->link; - s1 = S; - if(typesu[l->etype]) - s1 = acidsue(l->link); - if(s1 != S) { - Bprint(&outbuf, - "\tprint(indent, \"%s\t(%s)\", addr.%s\\X, \"\\n\");\n", - amap(s->name), amap(s1->name), amap(s->name)); - } else { - Bprint(&outbuf, - "\tprint(indent, \"%s\t\", addr.%s\\X, \"\\n\");\n", - amap(s->name), amap(s->name)); - } - break; - } - - case TINT: - case TUINT: - case TCHAR: - case TUCHAR: - case TSHORT: - case TUSHORT: - case TLONG: - case TULONG: - case TVLONG: - case TUVLONG: - case TFLOAT: - case TDOUBLE: - case TARRAY: - if(s == S) - break; - if(flag) { - Bprint(&outbuf, " '%c' %d %s;\n", - acidchar[t->etype], t->offset+off, amap(s->name)); - } else { - Bprint(&outbuf, "\tprint(indent, \"%s\t\", addr.%s, \"\\n\");\n", - amap(s->name), amap(s->name)); - } - break; - - case TSTRUCT: - case TUNION: - s1 = acidsue(t->link); - if(s1 == S) - break; - if(flag) { - if(s == S) { - Bprint(&outbuf, " {\n"); - for(l = t->link; l != T; l = l->down) - acidmember(l, t->offset+off, flag); - Bprint(&outbuf, " };\n"); - } else { - Bprint(&outbuf, " %s %d %s;\n", - amap(s1->name), - t->offset+off, amap(s->name)); - } - } else { - if(s != S) { - Bprint(&outbuf, "\tprint(indent, \"%s %s {\\n\");\n", - amap(s1->name), amap(s->name)); - Bprint(&outbuf, "\tindent_%s(addr.%s, indent+\"\\t\");\n", - amap(s1->name), amap(s->name)); - Bprint(&outbuf, "\tprint(indent, \"}\\n\");\n"); - } else { - Bprint(&outbuf, "\tprint(indent, \"%s {\\n\");\n", - amap(s1->name)); - Bprint(&outbuf, "\tindent_%s(addr+%d, indent+\"\\t\");\n", - amap(s1->name), t->offset+off); - Bprint(&outbuf, "\tprint(indent, \"}\\n\");\n"); - } - } - break; - } -} - -void -acidtype(Type *t) -{ - Sym *s; - Type *l; - Io *i; - int n; - char *an; - - if(!debug['a']) - return; - if(debug['a'] > 1) { - n = 0; - for(i=iostack; i; i=i->link) - n++; - if(n > 1) - return; - } - s = acidsue(t->link); - if(s == S) - return; - switch(t->etype) { - default: - Bprint(&outbuf, "T%d\n", t->etype); - return; - - case TUNION: - case TSTRUCT: - if(debug['s']) - goto asmstr; - an = amap(s->name); - Bprint(&outbuf, "sizeof%s = %d;\n", an, t->width); - Bprint(&outbuf, "aggr %s\n{\n", an); - for(l = t->link; l != T; l = l->down) - acidmember(l, 0, 1); - Bprint(&outbuf, "};\n\n"); - - Bprint(&outbuf, "defn\n%s(addr) {\n\tindent_%s(addr, \"\\t\");\n}\n", an, an); - Bprint(&outbuf, "defn\nindent_%s(addr, indent) {\n\tcomplex %s addr;\n", an, an); - for(l = t->link; l != T; l = l->down) - acidmember(l, 0, 0); - Bprint(&outbuf, "};\n\n"); - break; - asmstr: - if(s == S) - break; - for(l = t->link; l != T; l = l->down) - if(l->sym != S) - Bprint(&outbuf, "#define\t%s.%s\t%d\n", - s->name, - l->sym->name, - l->offset); - break; - } -} - -void -acidvar(Sym *s) -{ - int n; - Io *i; - Type *t; - Sym *s1, *s2; - - if(!debug['a'] || debug['s']) - return; - if(debug['a'] > 1) { - n = 0; - for(i=iostack; i; i=i->link) - n++; - if(n > 1) - return; - } - t = s->type; - while(t && t->etype == TIND) - t = t->link; - if(t == T) - return; - if(t->etype == TENUM) { - Bprint(&outbuf, "%s = ", amap(s->name)); - if(!typefd[t->etype]) - Bprint(&outbuf, "%lld;\n", s->vconst); - else - Bprint(&outbuf, "%f\n;", s->fconst); - return; - } - if(!typesu[t->etype]) - return; - s1 = acidsue(t->link); - if(s1 == S) - return; - switch(s->class) { - case CAUTO: - case CPARAM: - s2 = acidfun(thisfn); - if(s2) - Bprint(&outbuf, "complex %s %s:%s;\n", - amap(s1->name), amap(s2->name), amap(s->name)); - break; - - case CSTATIC: - case CEXTERN: - case CGLOBL: - case CLOCAL: - Bprint(&outbuf, "complex %s %s;\n", - amap(s1->name), amap(s->name)); - break; - } -} diff --git a/src/cmd/cc/bits.c b/src/cmd/cc/bits.c deleted file mode 100644 index 4496d65e7..000000000 --- a/src/cmd/cc/bits.c +++ /dev/null @@ -1,120 +0,0 @@ -// Inferno utils/cc/bits.c -// http://code.google.com/p/inferno-os/source/browse/utils/cc/bits.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <u.h> -#include "cc.h" - -Bits -bor(Bits a, Bits b) -{ - Bits c; - int i; - - for(i=0; i<BITS; i++) - c.b[i] = a.b[i] | b.b[i]; - return c; -} - -Bits -band(Bits a, Bits b) -{ - Bits c; - int i; - - for(i=0; i<BITS; i++) - c.b[i] = a.b[i] & b.b[i]; - return c; -} - -/* -Bits -bnot(Bits a) -{ - Bits c; - int i; - - for(i=0; i<BITS; i++) - c.b[i] = ~a.b[i]; - return c; -} -*/ - -int -bany(Bits *a) -{ - int i; - - for(i=0; i<BITS; i++) - if(a->b[i]) - return 1; - return 0; -} - -int -beq(Bits a, Bits b) -{ - int i; - - for(i=0; i<BITS; i++) - if(a.b[i] != b.b[i]) - return 0; - return 1; -} - -int -bnum(Bits a) -{ - int i; - int32 b; - - for(i=0; i<BITS; i++) - if(b = a.b[i]) - return 32*i + bitno(b); - diag(Z, "bad in bnum"); - return 0; -} - -Bits -blsh(uint n) -{ - Bits c; - - c = zbits; - c.b[n/32] = 1L << (n%32); - return c; -} - -int -bset(Bits a, uint n) -{ - if(a.b[n/32] & (1L << (n%32))) - return 1; - return 0; -} diff --git a/src/cmd/cc/cc.h b/src/cmd/cc/cc.h deleted file mode 100644 index 9530f5cf6..000000000 --- a/src/cmd/cc/cc.h +++ /dev/null @@ -1,835 +0,0 @@ -// Inferno utils/cc/cc.h -// http://code.google.com/p/inferno-os/source/browse/utils/cc/cc.h -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <libc.h> -#include <bio.h> -#include <link.h> - -#ifndef EXTERN -#define EXTERN extern -#endif - -#undef getc -#undef ungetc -#undef BUFSIZ - -#define getc ccgetc -#define ungetc ccungetc - -typedef struct Node Node; -typedef struct Sym Sym; -typedef struct Type Type; -typedef struct Funct Funct; -typedef struct Decl Decl; -typedef struct Io Io; -typedef struct Term Term; -typedef struct Init Init; -typedef struct Bits Bits; -typedef struct Bvec Bvec; -typedef struct Dynimp Dynimp; -typedef struct Dynexp Dynexp; -typedef struct Var Var; - -typedef Rune TRune; /* target system type */ - -#define BUFSIZ 8192 -#define NSYMB 500 -#define NHASH 1024 -#define STRINGSZ 200 -#define HISTSZ 20 -#define YYMAXDEPTH 500 -#define NTERM 10 -#define MAXALIGN 7 - -#define SIGN(n) ((uvlong)1<<(n-1)) -#define MASK(n) (SIGN(n)|(SIGN(n)-1)) - -#define BITS 5 -#define NVAR (BITS*sizeof(uint32)*8) -struct Bits -{ - uint32 b[BITS]; -}; - -struct Bvec -{ - int32 n; // number of bits - uint32 b[]; -}; - -struct Var -{ - vlong offset; - LSym* sym; - char name; - char etype; -}; - -struct Node -{ - Node* left; - Node* right; - void* label; - int32 pc; - int reg; - int32 xoffset; - double fconst; /* fp constant */ - vlong vconst; /* non fp const */ - char* cstring; /* character string */ - TRune* rstring; /* rune string */ - - Sym* sym; - Type* type; - int32 lineno; - uchar op; - uchar oldop; - uchar xcast; - uchar class; - uchar etype; - uchar complex; - uchar addable; - uchar scale; - uchar garb; -}; -#define Z ((Node*)0) - -struct Sym -{ - Sym* link; - LSym* lsym; - Type* type; - Type* suetag; - Type* tenum; - char* macro; - int32 varlineno; - int32 offset; - vlong vconst; - double fconst; - Node* label; - ushort lexical; - char *name; - ushort block; - ushort sueblock; - uchar class; - uchar sym; - uchar aused; - uchar sig; - uchar dataflag; -}; -#define S ((Sym*)0) - -enum{ - SIGNONE = 0, - SIGDONE = 1, - SIGINTERN = 2, - - SIGNINTERN = 1729*325*1729, -}; - -struct Decl -{ - Decl* link; - Sym* sym; - Type* type; - int32 varlineno; - int32 offset; - short val; - ushort block; - uchar class; - uchar aused; -}; -#define D ((Decl*)0) - -struct Type -{ - Sym* sym; - Sym* tag; - Funct* funct; - Type* link; - Type* down; - int32 width; - int32 offset; - int32 lineno; - uchar shift; - uchar nbits; - uchar etype; - uchar garb; - uchar align; -}; - -#define T ((Type*)0) -#define NODECL ((void(*)(int, Type*, Sym*))0) - -struct Init /* general purpose initialization */ -{ - int code; - uint32 value; - char* s; -}; - -EXTERN struct -{ - char* p; - int c; -} fi; - -struct Io -{ - Io* link; - char* p; - char b[BUFSIZ]; - short c; - short f; -}; -#define I ((Io*)0) - -struct Term -{ - vlong mult; - Node *node; -}; - -enum -{ - Axxx, - Ael1, - Ael2, - Asu2, - Aarg0, - Aarg1, - Aarg2, - Aaut3, - NALIGN, -}; - -enum -{ - DMARK, - DAUTO, - DSUE, - DLABEL, -}; -enum -{ - OXXX, - OADD, - OADDR, - OAND, - OANDAND, - OARRAY, - OAS, - OASI, - OASADD, - OASAND, - OASASHL, - OASASHR, - OASDIV, - OASHL, - OASHR, - OASLDIV, - OASLMOD, - OASLMUL, - OASLSHR, - OASMOD, - OASMUL, - OASOR, - OASSUB, - OASXOR, - OBIT, - OBREAK, - OCASE, - OCAST, - OCOMMA, - OCOND, - OCONST, - OCONTINUE, - ODIV, - ODOT, - ODOTDOT, - ODWHILE, - OENUM, - OEQ, - OEXREG, - OFOR, - OFUNC, - OGE, - OGOTO, - OGT, - OHI, - OHS, - OIF, - OIND, - OINDREG, - OINIT, - OLABEL, - OLDIV, - OLE, - OLIST, - OLMOD, - OLMUL, - OLO, - OLS, - OLSHR, - OLT, - OMOD, - OMUL, - ONAME, - ONE, - ONOT, - OOR, - OOROR, - OPOSTDEC, - OPOSTINC, - OPREDEC, - OPREINC, - OPREFETCH, - OPROTO, - OREGISTER, - ORETURN, - OSET, - OSIGN, - OSIZE, - OSTRING, - OLSTRING, - OSTRUCT, - OSUB, - OSWITCH, - OUNION, - OUSED, - OWHILE, - OXOR, - ONEG, - OCOM, - OPOS, - OELEM, - - OTST, /* used in some compilers */ - OINDEX, - OFAS, - OREGPAIR, - OROTL, - - OEND -}; -enum -{ - TXXX, - TCHAR, - TUCHAR, - TSHORT, - TUSHORT, - TINT, - TUINT, - TLONG, - TULONG, - TVLONG, - TUVLONG, - TFLOAT, - TDOUBLE, - TIND, - TFUNC, - TARRAY, - TVOID, - TSTRUCT, - TUNION, - TENUM, - NTYPE, - - TAUTO = NTYPE, - TEXTERN, - TSTATIC, - TTYPEDEF, - TTYPESTR, - TREGISTER, - TCONSTNT, - TVOLATILE, - TUNSIGNED, - TSIGNED, - TDOT, - TFILE, - TOLD, - NALLTYPES, - - /* adapt size of Rune to target system's size */ - TRUNE = sizeof(TRune)==4? TUINT: TUSHORT, -}; -enum -{ - CXXX, - CAUTO, - CEXTERN, - CGLOBL, - CSTATIC, - CLOCAL, - CTYPEDEF, - CTYPESTR, - CPARAM, - CSELEM, - CLABEL, - CEXREG, - NCTYPES, -}; -enum -{ - GXXX = 0, - GCONSTNT = 1<<0, - GVOLATILE = 1<<1, - NGTYPES = 1<<2, - - GINCOMPLETE = 1<<2, -}; -enum -{ - BCHAR = 1L<<TCHAR, - BUCHAR = 1L<<TUCHAR, - BSHORT = 1L<<TSHORT, - BUSHORT = 1L<<TUSHORT, - BINT = 1L<<TINT, - BUINT = 1L<<TUINT, - BLONG = 1L<<TLONG, - BULONG = 1L<<TULONG, - BVLONG = 1L<<TVLONG, - BUVLONG = 1L<<TUVLONG, - BFLOAT = 1L<<TFLOAT, - BDOUBLE = 1L<<TDOUBLE, - BIND = 1L<<TIND, - BFUNC = 1L<<TFUNC, - BARRAY = 1L<<TARRAY, - BVOID = 1L<<TVOID, - BSTRUCT = 1L<<TSTRUCT, - BUNION = 1L<<TUNION, - BENUM = 1L<<TENUM, - BFILE = 1L<<TFILE, - BDOT = 1L<<TDOT, - BCONSTNT = 1L<<TCONSTNT, - BVOLATILE = 1L<<TVOLATILE, - BUNSIGNED = 1L<<TUNSIGNED, - BSIGNED = 1L<<TSIGNED, - BAUTO = 1L<<TAUTO, - BEXTERN = 1L<<TEXTERN, - BSTATIC = 1L<<TSTATIC, - BTYPEDEF = 1L<<TTYPEDEF, - BTYPESTR = 1L<<TTYPESTR, - BREGISTER = 1L<<TREGISTER, - - BINTEGER = BCHAR|BUCHAR|BSHORT|BUSHORT|BINT|BUINT| - BLONG|BULONG|BVLONG|BUVLONG, - BNUMBER = BINTEGER|BFLOAT|BDOUBLE, - -/* these can be overloaded with complex types */ - - BCLASS = BAUTO|BEXTERN|BSTATIC|BTYPEDEF|BTYPESTR|BREGISTER, - BGARB = BCONSTNT|BVOLATILE, -}; - -struct Funct -{ - Sym* sym[OEND]; - Sym* castto[NTYPE]; - Sym* castfr[NTYPE]; -}; - -EXTERN struct -{ - Type* tenum; /* type of entire enum */ - Type* cenum; /* type of current enum run */ - vlong lastenum; /* value of current enum */ - double floatenum; /* value of current enum */ -} en; - -EXTERN int autobn; -EXTERN int32 autoffset; -EXTERN int blockno; -EXTERN Decl* dclstack; -EXTERN int debug[256]; -EXTERN int32 firstbit; -EXTERN Sym* firstarg; -EXTERN Type* firstargtype; -EXTERN Decl* firstdcl; -EXTERN int fperror; -EXTERN Sym* hash[NHASH]; -EXTERN char* hunk; -EXTERN char** include; -EXTERN Io* iofree; -EXTERN Io* ionext; -EXTERN Io* iostack; -EXTERN int32 lastbit; -EXTERN char lastclass; -EXTERN Type* lastdcl; -EXTERN int32 lastfield; -EXTERN Type* lasttype; -EXTERN int32 lineno; -EXTERN int32 nearln; -EXTERN int nerrors; -EXTERN int newflag; -EXTERN int32 nhunk; -EXTERN int ninclude; -EXTERN Node* nodproto; -EXTERN Node* nodcast; -EXTERN int32 nsymb; -EXTERN Biobuf outbuf; -EXTERN Biobuf diagbuf; -EXTERN char* outfile; -EXTERN int peekc; -EXTERN int32 stkoff; -EXTERN Type* strf; -EXTERN Type* strl; -EXTERN char* symb; -EXTERN Sym* symstring; -EXTERN int taggen; -EXTERN Type* tfield; -EXTERN Type* tufield; -extern int thechar; -extern char* thestring; -extern LinkArch* thelinkarch; -EXTERN Type* thisfn; -EXTERN int32 thunk; -EXTERN Type* types[NALLTYPES]; -EXTERN Type* fntypes[NALLTYPES]; -EXTERN Node* initlist; -EXTERN Term term[NTERM]; -EXTERN int nterm; -EXTERN int packflg; -EXTERN int fproundflg; -EXTERN int textflag; -EXTERN int dataflag; -EXTERN int flag_largemodel; -EXTERN int ncontin; -EXTERN int canreach; -EXTERN int warnreach; -EXTERN int nacl; -EXTERN Bits zbits; -EXTERN Fmt pragcgobuf; -EXTERN Biobuf bstdout; -EXTERN Var var[NVAR]; - -extern char *onames[], *tnames[], *gnames[]; -extern char *cnames[], *qnames[], *bnames[]; -extern uchar tab[NTYPE][NTYPE]; -extern uchar comrel[], invrel[], logrel[]; -extern int32 ncast[], tadd[], tand[]; -extern int32 targ[], tasadd[], tasign[], tcast[]; -extern int32 tdot[], tfunct[], tindir[], tmul[]; -extern int32 tnot[], trel[], tsub[]; - -extern uchar typeaf[]; -extern uchar typefd[]; -extern uchar typei[]; -extern uchar typesu[]; -extern uchar typesuv[]; -extern uchar typeu[]; -extern uchar typev[]; -extern uchar typec[]; -extern uchar typeh[]; -extern uchar typeil[]; -extern uchar typeilp[]; -extern uchar typechl[]; -extern uchar typechlv[]; -extern uchar typechlvp[]; -extern uchar typechlp[]; -extern uchar typechlpfd[]; - -EXTERN uchar* typeword; -EXTERN uchar* typecmplx; -EXTERN Link* ctxt; - -extern uint32 thash1; -extern uint32 thash2; -extern uint32 thash3; -extern uint32 thash[]; - -/* - * compat.c/unix.c/windows.c - */ -int systemtype(int); -int pathchar(void); - -/* - * parser - */ -int yyparse(void); -int mpatov(char*, vlong*); - -/* - * lex.c - */ -void* allocn(void*, int32, int32); -void* alloc(int32); -void ensuresymb(int32); -void cinit(void); -int compile(char*, char**, int); -void errorexit(void); -int filbuf(void); -int getc(void); -int32 getr(void); -int getnsc(void); -Sym* lookup(void); -void main(int, char*[]); -void newfile(char*, int); -void newio(void); -void pushio(void); -int32 escchar(int32, int, int); -Sym* slookup(char*); -void syminit(Sym*); -void unget(int); -int32 yylex(void); -int Lconv(Fmt*); -int Tconv(Fmt*); -int FNconv(Fmt*); -int Oconv(Fmt*); -int Qconv(Fmt*); -int VBconv(Fmt*); -int Bconv(Fmt*); -void setinclude(char*); - -/* - * mac.c - */ -void dodefine(char*); -void domacro(void); -Sym* getsym(void); -int32 getnsn(void); -void macdef(void); -void macprag(void); -void macend(void); -void macexpand(Sym*, char*); -void macif(int); -void macinc(void); -void maclin(void); -void macund(void); - -/* - * dcl.c - */ -Node* doinit(Sym*, Type*, int32, Node*); -Type* tcopy(Type*); -Node* init1(Sym*, Type*, int32, int); -Node* newlist(Node*, Node*); -void adecl(int, Type*, Sym*); -int anyproto(Node*); -void argmark(Node*, int); -void dbgdecl(Sym*); -Node* dcllabel(Sym*, int); -Node* dodecl(void(*)(int, Type*, Sym*), int, Type*, Node*); -Sym* mkstatic(Sym*); -void doenum(Sym*, Node*); -void snap(Type*); -Type* dotag(Sym*, int, int); -void edecl(int, Type*, Sym*); -Type* fnproto(Node*); -Type* fnproto1(Node*); -void markdcl(void); -Type* paramconv(Type*, int); -void pdecl(int, Type*, Sym*); -Decl* push(void); -Decl* push1(Sym*); -Node* revertdcl(void); -int32 xround(int32, int); -int rsametype(Type*, Type*, int, int); -int sametype(Type*, Type*); -uint32 sign(Sym*); -uint32 signature(Type*); -void sualign(Type*); -void tmerge(Type*, Sym*); -void walkparam(Node*, int); -void xdecl(int, Type*, Sym*); -Node* contig(Sym*, Node*, int32); - -/* - * com.c - */ -void ccom(Node*); -void complex(Node*); -int tcom(Node*); -int tcoma(Node*, Node*, Type*, int); -int tcomd(Node*); -int tcomo(Node*, int); -int tcomx(Node*); -int tlvalue(Node*); -void constas(Node*, Type*, Type*); - -/* - * con.c - */ -void acom(Node*); -void acom1(vlong, Node*); -void acom2(Node*, Type*); -int acomcmp1(const void*, const void*); -int acomcmp2(const void*, const void*); -int addo(Node*); -void evconst(Node*); - -/* - * funct.c - */ -int isfunct(Node*); -void dclfunct(Type*, Sym*); - -/* - * sub.c - */ -void arith(Node*, int); -int deadheads(Node*); -Type* dotsearch(Sym*, Type*, Node*, int32*); -int32 dotoffset(Type*, Type*, Node*); -void gethunk(void); -Node* invert(Node*); -int bitno(int32); -void makedot(Node*, Type*, int32); -int mixedasop(Type*, Type*); -Node* new(int, Node*, Node*); -Node* new1(int, Node*, Node*); -int nilcast(Type*, Type*); -int nocast(Type*, Type*); -void prtree(Node*, char*); -void prtree1(Node*, int, int); -void relcon(Node*, Node*); -int relindex(int); -int simpleg(int32); -Type* garbt(Type*, int32); -int simplec(int32); -Type* simplet(int32); -int stcompat(Node*, Type*, Type*, int32[]); -int tcompat(Node*, Type*, Type*, int32[]); -void tinit(void); -Type* typ(int, Type*); -Type* copytyp(Type*); -void typeext(Type*, Node*); -void typeext1(Type*, Node*); -int side(Node*); -int vconst(Node*); -int xlog2(uvlong); -int vlog(Node*); -int topbit(uint32); -void simplifyshift(Node*); -int32 typebitor(int32, int32); -void diag(Node*, char*, ...); -void warn(Node*, char*, ...); -void yyerror(char*, ...); -void fatal(Node*, char*, ...); -LSym* linksym(Sym*); - -/* - * acid.c - */ -void acidtype(Type*); -void acidvar(Sym*); - -/* - * godefs.c - */ -int Uconv(Fmt*); -void godeftype(Type*); -void godefvar(Sym*); - -/* - * bits.c - */ -Bits bor(Bits, Bits); -Bits band(Bits, Bits); -Bits bnot(Bits); -int bany(Bits*); -int bnum(Bits); -Bits blsh(uint); -int beq(Bits, Bits); -int bset(Bits, uint); - -/* - * dpchk.c - */ -void dpcheck(Node*); -void arginit(void); -void pragvararg(void); -void pragpack(void); -void pragfpround(void); -void pragdataflag(void); -void pragtextflag(void); -void pragincomplete(void); -void pragcgo(char*); - -/* - * calls to machine depend part - */ -void codgen(Node*, Node*); -void gclean(void); -void gextern(Sym*, Node*, int32, int32); -void ginit(void); -int32 outstring(char*, int32); -int32 outlstring(TRune*, int32); -void sextern(Sym*, Node*, int32, int32); -void xcom(Node*); -int32 exreg(Type*); -int32 align(int32, Type*, int, int32*); -int32 maxround(int32, int32); -int hasdotdotdot(Type*); -void linkarchinit(void); - -extern schar ewidth[]; - -/* - * com64 - */ -int com64(Node*); -void com64init(void); -void bool64(Node*); -double convvtof(vlong); -vlong convftov(double); -double convftox(double, int); -vlong convvtox(vlong, int); - -/* - * machcap - */ -int machcap(Node*); - -#pragma varargck argpos warn 2 -#pragma varargck argpos diag 2 -#pragma varargck argpos yyerror 1 - -#pragma varargck type "B" Bits -#pragma varargck type "F" Node* -#pragma varargck type "L" int32 -#pragma varargck type "Q" int32 -#pragma varargck type "O" int -#pragma varargck type "O" uint -#pragma varargck type "T" Type* -#pragma varargck type "U" char* -#pragma varargck type "|" int - -enum -{ - Plan9 = 1<<0, - Unix = 1<<1, - Windows = 1<<2, -}; -int pathchar(void); -int systemtype(int); -void* alloc(int32 n); -void* allocn(void*, int32, int32); diff --git a/src/cmd/cc/cc.y b/src/cmd/cc/cc.y deleted file mode 100644 index 8d7cb1472..000000000 --- a/src/cmd/cc/cc.y +++ /dev/null @@ -1,1220 +0,0 @@ -// Inferno utils/cc/cc.y -// http://code.google.com/p/inferno-os/source/browse/utils/cc/cc.y -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -%{ -#include <u.h> -#include <stdio.h> /* if we don't, bison will, and cc.h re-#defines getc */ -#include "cc.h" -%} -%union { - Node* node; - Sym* sym; - Type* type; - struct - { - Type* t; - uchar c; - } tycl; - struct - { - Type* t1; - Type* t2; - Type* t3; - uchar c; - } tyty; - struct - { - char* s; - int32 l; - } sval; - int32 lval; - double dval; - vlong vval; -} -%type <sym> ltag -%type <lval> gctname gcname cname gname tname -%type <lval> gctnlist gcnlist zgnlist -%type <type> tlist sbody complex -%type <tycl> types -%type <node> zarglist arglist zcexpr -%type <node> name block stmnt cexpr expr xuexpr pexpr -%type <node> zelist elist adecl slist uexpr string lstring -%type <node> xdecor xdecor2 labels label ulstmnt -%type <node> adlist edecor tag qual qlist -%type <node> abdecor abdecor1 abdecor2 abdecor3 -%type <node> zexpr lexpr init ilist forexpr - -%left ';' -%left ',' -%right '=' LPE LME LMLE LDVE LMDE LRSHE LLSHE LANDE LXORE LORE -%right '?' ':' -%left LOROR -%left LANDAND -%left '|' -%left '^' -%left '&' -%left LEQ LNE -%left '<' '>' LLE LGE -%left LLSH LRSH -%left '+' '-' -%left '*' '/' '%' -%right LMM LPP LMG '.' '[' '(' - -%token <sym> LNAME LTYPE -%token <dval> LFCONST LDCONST -%token <vval> LCONST LLCONST LUCONST LULCONST LVLCONST LUVLCONST -%token <sval> LSTRING LLSTRING -%token LAUTO LBREAK LCASE LCHAR LCONTINUE LDEFAULT LDO -%token LDOUBLE LELSE LEXTERN LFLOAT LFOR LGOTO -%token LIF LINT LLONG LPREFETCH LREGISTER LRETURN LSHORT LSIZEOF LUSED -%token LSTATIC LSTRUCT LSWITCH LTYPEDEF LTYPESTR LUNION LUNSIGNED -%token LWHILE LVOID LENUM LSIGNED LCONSTNT LVOLATILE LSET LSIGNOF -%token LRESTRICT LINLINE -%% -prog: -| prog xdecl - -/* - * external declarator - */ -xdecl: - zctlist ';' - { - dodecl(xdecl, lastclass, lasttype, Z); - } -| zctlist xdlist ';' -| zctlist xdecor - { - lastdcl = T; - firstarg = S; - dodecl(xdecl, lastclass, lasttype, $2); - if(lastdcl == T || lastdcl->etype != TFUNC) { - diag($2, "not a function"); - lastdcl = types[TFUNC]; - } - thisfn = lastdcl; - markdcl(); - firstdcl = dclstack; - argmark($2, 0); - } - pdecl - { - argmark($2, 1); - } - block - { - Node *n; - - n = revertdcl(); - if(n) - $6 = new(OLIST, n, $6); - if(!debug['a'] && !debug['Z']) - codgen($6, $2); - } - -xdlist: - xdecor - { - dodecl(xdecl, lastclass, lasttype, $1); - } -| xdecor - { - $1 = dodecl(xdecl, lastclass, lasttype, $1); - } - '=' init - { - doinit($1->sym, $1->type, 0L, $4); - } -| xdlist ',' xdlist - -xdecor: - xdecor2 -| '*' zgnlist xdecor - { - $$ = new(OIND, $3, Z); - $$->garb = simpleg($2); - } - -xdecor2: - tag -| '(' xdecor ')' - { - $$ = $2; - } -| xdecor2 '(' zarglist ')' - { - $$ = new(OFUNC, $1, $3); - } -| xdecor2 '[' zexpr ']' - { - $$ = new(OARRAY, $1, $3); - } - -/* - * automatic declarator - */ -adecl: - ctlist ';' - { - $$ = dodecl(adecl, lastclass, lasttype, Z); - } -| ctlist adlist ';' - { - $$ = $2; - } - -adlist: - xdecor - { - dodecl(adecl, lastclass, lasttype, $1); - $$ = Z; - } -| xdecor - { - $1 = dodecl(adecl, lastclass, lasttype, $1); - } - '=' init - { - int32 w; - - w = $1->sym->type->width; - $$ = doinit($1->sym, $1->type, 0L, $4); - $$ = contig($1->sym, $$, w); - } -| adlist ',' adlist - { - $$ = $1; - if($3 != Z) { - $$ = $3; - if($1 != Z) - $$ = new(OLIST, $1, $3); - } - } - -/* - * parameter declarator - */ -pdecl: -| pdecl ctlist pdlist ';' - -pdlist: - xdecor - { - dodecl(pdecl, lastclass, lasttype, $1); - } -| pdlist ',' pdlist - -/* - * structure element declarator - */ -edecl: - tlist - { - lasttype = $1; - } - zedlist ';' -| edecl tlist - { - lasttype = $2; - } - zedlist ';' - -zedlist: /* extension */ - { - lastfield = 0; - edecl(CXXX, lasttype, S); - } -| edlist - -edlist: - edecor - { - dodecl(edecl, CXXX, lasttype, $1); - } -| edlist ',' edlist - -edecor: - xdecor - { - lastbit = 0; - firstbit = 1; - } -| tag ':' lexpr - { - $$ = new(OBIT, $1, $3); - } -| ':' lexpr - { - $$ = new(OBIT, Z, $2); - } - -/* - * abstract declarator - */ -abdecor: - { - $$ = (Z); - } -| abdecor1 - -abdecor1: - '*' zgnlist - { - $$ = new(OIND, (Z), Z); - $$->garb = simpleg($2); - } -| '*' zgnlist abdecor1 - { - $$ = new(OIND, $3, Z); - $$->garb = simpleg($2); - } -| abdecor2 - -abdecor2: - abdecor3 -| abdecor2 '(' zarglist ')' - { - $$ = new(OFUNC, $1, $3); - } -| abdecor2 '[' zexpr ']' - { - $$ = new(OARRAY, $1, $3); - } - -abdecor3: - '(' ')' - { - $$ = new(OFUNC, (Z), Z); - } -| '[' zexpr ']' - { - $$ = new(OARRAY, (Z), $2); - } -| '(' abdecor1 ')' - { - $$ = $2; - } - -init: - expr -| '{' ilist '}' - { - $$ = new(OINIT, invert($2), Z); - } - -qual: - '[' lexpr ']' - { - $$ = new(OARRAY, $2, Z); - } -| '.' ltag - { - $$ = new(OELEM, Z, Z); - $$->sym = $2; - } -| qual '=' - -qlist: - init ',' -| qlist init ',' - { - $$ = new(OLIST, $1, $2); - } -| qual -| qlist qual - { - $$ = new(OLIST, $1, $2); - } - -ilist: - qlist -| init -| qlist init - { - $$ = new(OLIST, $1, $2); - } - -zarglist: - { - $$ = Z; - } -| arglist - { - $$ = invert($1); - } - - -arglist: - name -| tlist abdecor - { - $$ = new(OPROTO, $2, Z); - $$->type = $1; - } -| tlist xdecor - { - $$ = new(OPROTO, $2, Z); - $$->type = $1; - } -| '.' '.' '.' - { - $$ = new(ODOTDOT, Z, Z); - } -| arglist ',' arglist - { - $$ = new(OLIST, $1, $3); - } - -block: - '{' slist '}' - { - $$ = invert($2); - // if($2 != Z) - // $$ = new(OLIST, $2, $$); - if($$ == Z) - $$ = new(OLIST, Z, Z); - } - -slist: - { - $$ = Z; - } -| slist adecl - { - $$ = new(OLIST, $1, $2); - } -| slist stmnt - { - $$ = new(OLIST, $1, $2); - } - -labels: - label -| labels label - { - $$ = new(OLIST, $1, $2); - } - -label: - LCASE expr ':' - { - $$ = new(OCASE, $2, Z); - } -| LDEFAULT ':' - { - $$ = new(OCASE, Z, Z); - } -| LNAME ':' - { - $$ = new(OLABEL, dcllabel($1, 1), Z); - } - -stmnt: - error ';' - { - $$ = Z; - } -| ulstmnt -| labels ulstmnt - { - $$ = new(OLIST, $1, $2); - } - -forexpr: - zcexpr -| ctlist adlist - { - $$ = $2; - } - -ulstmnt: - zcexpr ';' -| { - markdcl(); - } - block - { - $$ = revertdcl(); - if($$) - $$ = new(OLIST, $$, $2); - else - $$ = $2; - } -| LIF '(' cexpr ')' stmnt - { - $$ = new(OIF, $3, new(OLIST, $5, Z)); - if($5 == Z) - warn($3, "empty if body"); - } -| LIF '(' cexpr ')' stmnt LELSE stmnt - { - $$ = new(OIF, $3, new(OLIST, $5, $7)); - if($5 == Z) - warn($3, "empty if body"); - if($7 == Z) - warn($3, "empty else body"); - } -| { markdcl(); } LFOR '(' forexpr ';' zcexpr ';' zcexpr ')' stmnt - { - $$ = revertdcl(); - if($$){ - if($4) - $4 = new(OLIST, $$, $4); - else - $4 = $$; - } - $$ = new(OFOR, new(OLIST, $6, new(OLIST, $4, $8)), $10); - } -| LWHILE '(' cexpr ')' stmnt - { - $$ = new(OWHILE, $3, $5); - } -| LDO stmnt LWHILE '(' cexpr ')' ';' - { - $$ = new(ODWHILE, $5, $2); - } -| LRETURN zcexpr ';' - { - $$ = new(ORETURN, $2, Z); - $$->type = thisfn->link; - } -| LSWITCH '(' cexpr ')' stmnt - { - $$ = new(OCONST, Z, Z); - $$->vconst = 0; - $$->type = types[TINT]; - $3 = new(OSUB, $$, $3); - - $$ = new(OCONST, Z, Z); - $$->vconst = 0; - $$->type = types[TINT]; - $3 = new(OSUB, $$, $3); - - $$ = new(OSWITCH, $3, $5); - } -| LBREAK ';' - { - $$ = new(OBREAK, Z, Z); - } -| LCONTINUE ';' - { - $$ = new(OCONTINUE, Z, Z); - } -| LGOTO ltag ';' - { - $$ = new(OGOTO, dcllabel($2, 0), Z); - } -| LUSED '(' zelist ')' ';' - { - $$ = new(OUSED, $3, Z); - } -| LPREFETCH '(' zelist ')' ';' - { - $$ = new(OPREFETCH, $3, Z); - } -| LSET '(' zelist ')' ';' - { - $$ = new(OSET, $3, Z); - } - -zcexpr: - { - $$ = Z; - } -| cexpr - -zexpr: - { - $$ = Z; - } -| lexpr - -lexpr: - expr - { - $$ = new(OCAST, $1, Z); - $$->type = types[TLONG]; - } - -cexpr: - expr -| cexpr ',' cexpr - { - $$ = new(OCOMMA, $1, $3); - } - -expr: - xuexpr -| expr '*' expr - { - $$ = new(OMUL, $1, $3); - } -| expr '/' expr - { - $$ = new(ODIV, $1, $3); - } -| expr '%' expr - { - $$ = new(OMOD, $1, $3); - } -| expr '+' expr - { - $$ = new(OADD, $1, $3); - } -| expr '-' expr - { - $$ = new(OSUB, $1, $3); - } -| expr LRSH expr - { - $$ = new(OASHR, $1, $3); - } -| expr LLSH expr - { - $$ = new(OASHL, $1, $3); - } -| expr '<' expr - { - $$ = new(OLT, $1, $3); - } -| expr '>' expr - { - $$ = new(OGT, $1, $3); - } -| expr LLE expr - { - $$ = new(OLE, $1, $3); - } -| expr LGE expr - { - $$ = new(OGE, $1, $3); - } -| expr LEQ expr - { - $$ = new(OEQ, $1, $3); - } -| expr LNE expr - { - $$ = new(ONE, $1, $3); - } -| expr '&' expr - { - $$ = new(OAND, $1, $3); - } -| expr '^' expr - { - $$ = new(OXOR, $1, $3); - } -| expr '|' expr - { - $$ = new(OOR, $1, $3); - } -| expr LANDAND expr - { - $$ = new(OANDAND, $1, $3); - } -| expr LOROR expr - { - $$ = new(OOROR, $1, $3); - } -| expr '?' cexpr ':' expr - { - $$ = new(OCOND, $1, new(OLIST, $3, $5)); - } -| expr '=' expr - { - $$ = new(OAS, $1, $3); - } -| expr LPE expr - { - $$ = new(OASADD, $1, $3); - } -| expr LME expr - { - $$ = new(OASSUB, $1, $3); - } -| expr LMLE expr - { - $$ = new(OASMUL, $1, $3); - } -| expr LDVE expr - { - $$ = new(OASDIV, $1, $3); - } -| expr LMDE expr - { - $$ = new(OASMOD, $1, $3); - } -| expr LLSHE expr - { - $$ = new(OASASHL, $1, $3); - } -| expr LRSHE expr - { - $$ = new(OASASHR, $1, $3); - } -| expr LANDE expr - { - $$ = new(OASAND, $1, $3); - } -| expr LXORE expr - { - $$ = new(OASXOR, $1, $3); - } -| expr LORE expr - { - $$ = new(OASOR, $1, $3); - } - -xuexpr: - uexpr -| '(' tlist abdecor ')' xuexpr - { - $$ = new(OCAST, $5, Z); - dodecl(NODECL, CXXX, $2, $3); - $$->type = lastdcl; - $$->xcast = 1; - } -| '(' tlist abdecor ')' '{' ilist '}' /* extension */ - { - $$ = new(OSTRUCT, $6, Z); - dodecl(NODECL, CXXX, $2, $3); - $$->type = lastdcl; - } - -uexpr: - pexpr -| '*' xuexpr - { - $$ = new(OIND, $2, Z); - } -| '&' xuexpr - { - $$ = new(OADDR, $2, Z); - } -| '+' xuexpr - { - $$ = new(OPOS, $2, Z); - } -| '-' xuexpr - { - $$ = new(ONEG, $2, Z); - } -| '!' xuexpr - { - $$ = new(ONOT, $2, Z); - } -| '~' xuexpr - { - $$ = new(OCOM, $2, Z); - } -| LPP xuexpr - { - $$ = new(OPREINC, $2, Z); - } -| LMM xuexpr - { - $$ = new(OPREDEC, $2, Z); - } -| LSIZEOF uexpr - { - $$ = new(OSIZE, $2, Z); - } -| LSIGNOF uexpr - { - $$ = new(OSIGN, $2, Z); - } - -pexpr: - '(' cexpr ')' - { - $$ = $2; - } -| LSIZEOF '(' tlist abdecor ')' - { - $$ = new(OSIZE, Z, Z); - dodecl(NODECL, CXXX, $3, $4); - $$->type = lastdcl; - } -| LSIGNOF '(' tlist abdecor ')' - { - $$ = new(OSIGN, Z, Z); - dodecl(NODECL, CXXX, $3, $4); - $$->type = lastdcl; - } -| pexpr '(' zelist ')' - { - $$ = new(OFUNC, $1, Z); - if($1->op == ONAME) - if($1->type == T) - dodecl(xdecl, CXXX, types[TINT], $$); - $$->right = invert($3); - } -| pexpr '[' cexpr ']' - { - $$ = new(OIND, new(OADD, $1, $3), Z); - } -| pexpr LMG ltag - { - $$ = new(ODOT, new(OIND, $1, Z), Z); - $$->sym = $3; - } -| pexpr '.' ltag - { - $$ = new(ODOT, $1, Z); - $$->sym = $3; - } -| pexpr LPP - { - $$ = new(OPOSTINC, $1, Z); - } -| pexpr LMM - { - $$ = new(OPOSTDEC, $1, Z); - } -| name -| LCONST - { - $$ = new(OCONST, Z, Z); - $$->type = types[TINT]; - $$->vconst = $1; - $$->cstring = strdup(symb); - } -| LLCONST - { - $$ = new(OCONST, Z, Z); - $$->type = types[TLONG]; - $$->vconst = $1; - $$->cstring = strdup(symb); - } -| LUCONST - { - $$ = new(OCONST, Z, Z); - $$->type = types[TUINT]; - $$->vconst = $1; - $$->cstring = strdup(symb); - } -| LULCONST - { - $$ = new(OCONST, Z, Z); - $$->type = types[TULONG]; - $$->vconst = $1; - $$->cstring = strdup(symb); - } -| LDCONST - { - $$ = new(OCONST, Z, Z); - $$->type = types[TDOUBLE]; - $$->fconst = $1; - $$->cstring = strdup(symb); - } -| LFCONST - { - $$ = new(OCONST, Z, Z); - $$->type = types[TFLOAT]; - $$->fconst = $1; - $$->cstring = strdup(symb); - } -| LVLCONST - { - $$ = new(OCONST, Z, Z); - $$->type = types[TVLONG]; - $$->vconst = $1; - $$->cstring = strdup(symb); - } -| LUVLCONST - { - $$ = new(OCONST, Z, Z); - $$->type = types[TUVLONG]; - $$->vconst = $1; - $$->cstring = strdup(symb); - } -| string -| lstring - -string: - LSTRING - { - $$ = new(OSTRING, Z, Z); - $$->type = typ(TARRAY, types[TCHAR]); - $$->type->width = $1.l + 1; - $$->cstring = $1.s; - $$->sym = symstring; - $$->etype = TARRAY; - $$->class = CSTATIC; - } -| string LSTRING - { - char *s; - int n; - - n = $1->type->width - 1; - s = alloc(n+$2.l+MAXALIGN); - - memcpy(s, $1->cstring, n); - memcpy(s+n, $2.s, $2.l); - s[n+$2.l] = 0; - - $$ = $1; - $$->type->width += $2.l; - $$->cstring = s; - } - -lstring: - LLSTRING - { - $$ = new(OLSTRING, Z, Z); - $$->type = typ(TARRAY, types[TRUNE]); - $$->type->width = $1.l + sizeof(TRune); - $$->rstring = (TRune*)$1.s; - $$->sym = symstring; - $$->etype = TARRAY; - $$->class = CSTATIC; - } -| lstring LLSTRING - { - char *s; - int n; - - n = $1->type->width - sizeof(TRune); - s = alloc(n+$2.l+MAXALIGN); - - memcpy(s, $1->rstring, n); - memcpy(s+n, $2.s, $2.l); - *(TRune*)(s+n+$2.l) = 0; - - $$ = $1; - $$->type->width += $2.l; - $$->rstring = (TRune*)s; - } - -zelist: - { - $$ = Z; - } -| elist - -elist: - expr -| elist ',' elist - { - $$ = new(OLIST, $1, $3); - } - -sbody: - '{' - { - $<tyty>$.t1 = strf; - $<tyty>$.t2 = strl; - $<tyty>$.t3 = lasttype; - $<tyty>$.c = lastclass; - strf = T; - strl = T; - lastbit = 0; - firstbit = 1; - lastclass = CXXX; - lasttype = T; - } - edecl '}' - { - $$ = strf; - strf = $<tyty>2.t1; - strl = $<tyty>2.t2; - lasttype = $<tyty>2.t3; - lastclass = $<tyty>2.c; - } - -zctlist: - { - lastclass = CXXX; - lasttype = types[TINT]; - } -| ctlist - -types: - complex - { - $$.t = $1; - $$.c = CXXX; - } -| tname - { - $$.t = simplet($1); - $$.c = CXXX; - } -| gcnlist - { - $$.t = simplet($1); - $$.c = simplec($1); - $$.t = garbt($$.t, $1); - } -| complex gctnlist - { - $$.t = $1; - $$.c = simplec($2); - $$.t = garbt($$.t, $2); - if($2 & ~BCLASS & ~BGARB) - diag(Z, "duplicate types given: %T and %Q", $1, $2); - } -| tname gctnlist - { - $$.t = simplet(typebitor($1, $2)); - $$.c = simplec($2); - $$.t = garbt($$.t, $2); - } -| gcnlist complex zgnlist - { - $$.t = $2; - $$.c = simplec($1); - $$.t = garbt($$.t, $1|$3); - } -| gcnlist tname - { - $$.t = simplet($2); - $$.c = simplec($1); - $$.t = garbt($$.t, $1); - } -| gcnlist tname gctnlist - { - $$.t = simplet(typebitor($2, $3)); - $$.c = simplec($1|$3); - $$.t = garbt($$.t, $1|$3); - } - -tlist: - types - { - $$ = $1.t; - if($1.c != CXXX) - diag(Z, "illegal combination of class 4: %s", cnames[$1.c]); - } - -ctlist: - types - { - lasttype = $1.t; - lastclass = $1.c; - } - -complex: - LSTRUCT ltag - { - dotag($2, TSTRUCT, 0); - $$ = $2->suetag; - } -| LSTRUCT ltag - { - dotag($2, TSTRUCT, autobn); - } - sbody - { - $$ = $2->suetag; - if($$->link != T) - diag(Z, "redeclare tag: %s", $2->name); - $$->link = $4; - sualign($$); - } -| LSTRUCT sbody - { - diag(Z, "struct must have tag"); - taggen++; - sprint(symb, "_%d_", taggen); - $$ = dotag(lookup(), TSTRUCT, autobn); - $$->link = $2; - sualign($$); - } -| LUNION ltag - { - dotag($2, TUNION, 0); - $$ = $2->suetag; - } -| LUNION ltag - { - dotag($2, TUNION, autobn); - } - sbody - { - $$ = $2->suetag; - if($$->link != T) - diag(Z, "redeclare tag: %s", $2->name); - $$->link = $4; - sualign($$); - } -| LUNION sbody - { - taggen++; - sprint(symb, "_%d_", taggen); - $$ = dotag(lookup(), TUNION, autobn); - $$->link = $2; - sualign($$); - } -| LENUM ltag - { - dotag($2, TENUM, 0); - $$ = $2->suetag; - if($$->link == T) - $$->link = types[TINT]; - $$ = $$->link; - } -| LENUM ltag - { - dotag($2, TENUM, autobn); - } - '{' - { - en.tenum = T; - en.cenum = T; - } - enum '}' - { - $$ = $2->suetag; - if($$->link != T) - diag(Z, "redeclare tag: %s", $2->name); - if(en.tenum == T) { - diag(Z, "enum type ambiguous: %s", $2->name); - en.tenum = types[TINT]; - } - $$->link = en.tenum; - $$ = en.tenum; - } -| LENUM '{' - { - en.tenum = T; - en.cenum = T; - } - enum '}' - { - $$ = en.tenum; - } -| LTYPE - { - $$ = tcopy($1->type); - } - -gctnlist: - gctname -| gctnlist gctname - { - $$ = typebitor($1, $2); - } - -zgnlist: - { - $$ = 0; - } -| zgnlist gname - { - $$ = typebitor($1, $2); - } - -gctname: - tname -| gname -| cname - -gcnlist: - gcname -| gcnlist gcname - { - $$ = typebitor($1, $2); - } - -gcname: - gname -| cname - -enum: - LNAME - { - doenum($1, Z); - } -| LNAME '=' expr - { - doenum($1, $3); - } -| enum ',' -| enum ',' enum - -tname: /* type words */ - LCHAR { $$ = BCHAR; } -| LSHORT { $$ = BSHORT; } -| LINT { $$ = BINT; } -| LLONG { $$ = BLONG; } -| LSIGNED { $$ = BSIGNED; } -| LUNSIGNED { $$ = BUNSIGNED; } -| LFLOAT { $$ = BFLOAT; } -| LDOUBLE { $$ = BDOUBLE; } -| LVOID { $$ = BVOID; } - -cname: /* class words */ - LAUTO { $$ = BAUTO; } -| LSTATIC { $$ = BSTATIC; } -| LEXTERN { $$ = BEXTERN; } -| LTYPEDEF { $$ = BTYPEDEF; } -| LTYPESTR { $$ = BTYPESTR; } -| LREGISTER { $$ = BREGISTER; } -| LINLINE { $$ = 0; } - -gname: /* garbage words */ - LCONSTNT { $$ = BCONSTNT; } -| LVOLATILE { $$ = BVOLATILE; } -| LRESTRICT { $$ = 0; } - -name: - LNAME - { - $$ = new(ONAME, Z, Z); - if($1->class == CLOCAL) - $1 = mkstatic($1); - $$->sym = $1; - $$->type = $1->type; - $$->etype = TVOID; - if($$->type != T) - $$->etype = $$->type->etype; - $$->xoffset = $1->offset; - $$->class = $1->class; - $1->aused = 1; - } -tag: - ltag - { - $$ = new(ONAME, Z, Z); - $$->sym = $1; - $$->type = $1->type; - $$->etype = TVOID; - if($$->type != T) - $$->etype = $$->type->etype; - $$->xoffset = $1->offset; - $$->class = $1->class; - } -ltag: - LNAME -| LTYPE -%% diff --git a/src/cmd/cc/com.c b/src/cmd/cc/com.c deleted file mode 100644 index 4886b73eb..000000000 --- a/src/cmd/cc/com.c +++ /dev/null @@ -1,1384 +0,0 @@ -// Inferno utils/cc/com.c -// http://code.google.com/p/inferno-os/source/browse/utils/cc/com.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <u.h> -#include "cc.h" - -int compar(Node*, int); - -void -complex(Node *n) -{ - - if(n == Z) - return; - - nearln = n->lineno; - if(debug['t']) - if(n->op != OCONST) - prtree(n, "pre complex"); - if(tcom(n)) - return; - if(debug['t']) - if(n->op != OCONST) - prtree(n, "t complex"); - ccom(n); - if(debug['t']) - if(n->op != OCONST) - prtree(n, "c complex"); - acom(n); - if(debug['t']) - if(n->op != OCONST) - prtree(n, "a complex"); - xcom(n); - if(debug['t']) - if(n->op != OCONST) - prtree(n, "x complex"); -} - -/* - * evaluate types - * evaluate lvalues (addable == 1) - */ -enum -{ - ADDROF = 1<<0, - CASTOF = 1<<1, - ADDROP = 1<<2, -}; - -int -tcom(Node *n) -{ - - return tcomo(n, ADDROF); -} - -int -tcomo(Node *n, int f) -{ - Node *l, *r; - Type *t; - int o; - static TRune zer; - - if(n == Z) { - diag(Z, "Z in tcom"); - errorexit(); - } - n->addable = 0; - l = n->left; - r = n->right; - - switch(n->op) { - default: - diag(n, "unknown op in type complex: %O", n->op); - goto bad; - - case ODOTDOT: - /* - * tcom has already been called on this subtree - */ - *n = *n->left; - if(n->type == T) - goto bad; - break; - - case OCAST: - if(n->type == T) - break; - if(n->type->width == types[TLONG]->width) { - if(tcomo(l, ADDROF|CASTOF)) - goto bad; - } else - if(tcom(l)) - goto bad; - if(isfunct(n)) - break; - if(tcompat(n, l->type, n->type, tcast)) - goto bad; - break; - - case ORETURN: - if(l == Z) { - if(n->type->etype != TVOID) - diag(n, "null return of a typed function"); - break; - } - if(tcom(l)) - goto bad; - typeext(n->type, l); - if(tcompat(n, n->type, l->type, tasign)) - break; - constas(n, n->type, l->type); - if(!sametype(n->type, l->type)) { - l = new1(OCAST, l, Z); - l->type = n->type; - n->left = l; - } - break; - - case OASI: /* same as as, but no test for const */ - n->op = OAS; - o = tcom(l); - if(o | tcom(r)) - goto bad; - - typeext(l->type, r); - if(tlvalue(l) || tcompat(n, l->type, r->type, tasign)) - goto bad; - if(!sametype(l->type, r->type)) { - r = new1(OCAST, r, Z); - r->type = l->type; - n->right = r; - } - n->type = l->type; - break; - - case OAS: - o = tcom(l); - if(o | tcom(r)) - goto bad; - if(tlvalue(l)) - goto bad; - if(isfunct(n)) - break; - typeext(l->type, r); - if(tcompat(n, l->type, r->type, tasign)) - goto bad; - constas(n, l->type, r->type); - if(!sametype(l->type, r->type)) { - r = new1(OCAST, r, Z); - r->type = l->type; - n->right = r; - } - n->type = l->type; - break; - - case OASADD: - case OASSUB: - o = tcom(l); - if(o | tcom(r)) - goto bad; - if(tlvalue(l)) - goto bad; - if(isfunct(n)) - break; - typeext1(l->type, r); - if(tcompat(n, l->type, r->type, tasadd)) - goto bad; - constas(n, l->type, r->type); - t = l->type; - arith(n, 0); - while(n->left->op == OCAST) - n->left = n->left->left; - if(!sametype(t, n->type) && !mixedasop(t, n->type)) { - r = new1(OCAST, n->right, Z); - r->type = t; - n->right = r; - n->type = t; - } - break; - - case OASMUL: - case OASLMUL: - case OASDIV: - case OASLDIV: - o = tcom(l); - if(o | tcom(r)) - goto bad; - if(tlvalue(l)) - goto bad; - if(isfunct(n)) - break; - typeext1(l->type, r); - if(tcompat(n, l->type, r->type, tmul)) - goto bad; - constas(n, l->type, r->type); - t = l->type; - arith(n, 0); - while(n->left->op == OCAST) - n->left = n->left->left; - if(!sametype(t, n->type) && !mixedasop(t, n->type)) { - r = new1(OCAST, n->right, Z); - r->type = t; - n->right = r; - n->type = t; - } - if(typeu[n->type->etype]) { - if(n->op == OASDIV) - n->op = OASLDIV; - if(n->op == OASMUL) - n->op = OASLMUL; - } - break; - - case OASLSHR: - case OASASHR: - case OASASHL: - o = tcom(l); - if(o | tcom(r)) - goto bad; - if(tlvalue(l)) - goto bad; - if(isfunct(n)) - break; - if(tcompat(n, l->type, r->type, tand)) - goto bad; - n->type = l->type; - if(typeu[n->type->etype]) { - if(n->op == OASASHR) - n->op = OASLSHR; - } - break; - - case OASMOD: - case OASLMOD: - case OASOR: - case OASAND: - case OASXOR: - o = tcom(l); - if(o | tcom(r)) - goto bad; - if(tlvalue(l)) - goto bad; - if(isfunct(n)) - break; - if(tcompat(n, l->type, r->type, tand)) - goto bad; - t = l->type; - arith(n, 0); - while(n->left->op == OCAST) - n->left = n->left->left; - if(!sametype(t, n->type) && !mixedasop(t, n->type)) { - r = new1(OCAST, n->right, Z); - r->type = t; - n->right = r; - n->type = t; - } - if(typeu[n->type->etype]) { - if(n->op == OASMOD) - n->op = OASLMOD; - } - break; - - case OPREINC: - case OPREDEC: - case OPOSTINC: - case OPOSTDEC: - if(tcom(l)) - goto bad; - if(tlvalue(l)) - goto bad; - if(isfunct(n)) - break; - if(tcompat(n, l->type, types[TINT], tadd)) - goto bad; - n->type = l->type; - if(n->type->etype == TIND) - if(n->type->link->width < 1) - diag(n, "inc/dec of a void pointer"); - break; - - case OEQ: - case ONE: - o = tcom(l); - if(o | tcom(r)) - goto bad; - if(isfunct(n)) - break; - typeext(l->type, r); - typeext(r->type, l); - if(tcompat(n, l->type, r->type, trel)) - goto bad; - arith(n, 0); - n->type = types[TINT]; - break; - - case OLT: - case OGE: - case OGT: - case OLE: - o = tcom(l); - if(o | tcom(r)) - goto bad; - if(isfunct(n)) - break; - typeext1(l->type, r); - typeext1(r->type, l); - if(tcompat(n, l->type, r->type, trel)) - goto bad; - arith(n, 0); - if(typeu[n->type->etype]) - n->op = logrel[relindex(n->op)]; - n->type = types[TINT]; - break; - - case OCOND: - o = tcom(l); - o |= tcom(r->left); - if(o | tcom(r->right)) - goto bad; - if(r->right->type->etype == TIND && vconst(r->left) == 0) { - r->left->type = r->right->type; - r->left->vconst = 0; - } - if(r->left->type->etype == TIND && vconst(r->right) == 0) { - r->right->type = r->left->type; - r->right->vconst = 0; - } - if(sametype(r->right->type, r->left->type)) { - r->type = r->right->type; - n->type = r->type; - break; - } - if(tcompat(r, r->left->type, r->right->type, trel)) - goto bad; - arith(r, 0); - n->type = r->type; - break; - - case OADD: - o = tcom(l); - if(o | tcom(r)) - goto bad; - if(isfunct(n)) - break; - if(tcompat(n, l->type, r->type, tadd)) - goto bad; - arith(n, 1); - break; - - case OSUB: - o = tcom(l); - if(o | tcom(r)) - goto bad; - if(isfunct(n)) - break; - if(tcompat(n, l->type, r->type, tsub)) - goto bad; - arith(n, 1); - break; - - case OMUL: - case OLMUL: - case ODIV: - case OLDIV: - o = tcom(l); - if(o | tcom(r)) - goto bad; - if(isfunct(n)) - break; - if(tcompat(n, l->type, r->type, tmul)) - goto bad; - arith(n, 1); - if(typeu[n->type->etype]) { - if(n->op == ODIV) - n->op = OLDIV; - if(n->op == OMUL) - n->op = OLMUL; - } - break; - - case OLSHR: - case OASHL: - case OASHR: - o = tcom(l); - if(o | tcom(r)) - goto bad; - if(isfunct(n)) - break; - if(tcompat(n, l->type, r->type, tand)) - goto bad; - n->right = Z; - arith(n, 1); - n->right = new1(OCAST, r, Z); - n->right->type = types[TINT]; - if(typeu[n->type->etype]) - if(n->op == OASHR) - n->op = OLSHR; - break; - - case OAND: - case OOR: - case OXOR: - o = tcom(l); - if(o | tcom(r)) - goto bad; - if(isfunct(n)) - break; - if(tcompat(n, l->type, r->type, tand)) - goto bad; - arith(n, 1); - break; - - case OMOD: - case OLMOD: - o = tcom(l); - if(o | tcom(r)) - goto bad; - if(isfunct(n)) - break; - if(tcompat(n, l->type, r->type, tand)) - goto bad; - arith(n, 1); - if(typeu[n->type->etype]) - n->op = OLMOD; - break; - - case OPOS: - if(tcom(l)) - goto bad; - if(isfunct(n)) - break; - - r = l; - l = new(OCONST, Z, Z); - l->vconst = 0; - l->type = types[TINT]; - n->op = OADD; - n->right = r; - n->left = l; - - if(tcom(l)) - goto bad; - if(tcompat(n, l->type, r->type, tsub)) - goto bad; - arith(n, 1); - break; - - case ONEG: - if(tcom(l)) - goto bad; - if(isfunct(n)) - break; - - if(!machcap(n)) { - r = l; - l = new(OCONST, Z, Z); - l->vconst = 0; - l->type = types[TINT]; - n->op = OSUB; - n->right = r; - n->left = l; - - if(tcom(l)) - goto bad; - if(tcompat(n, l->type, r->type, tsub)) - goto bad; - } - arith(n, 1); - break; - - case OCOM: - if(tcom(l)) - goto bad; - if(isfunct(n)) - break; - - if(!machcap(n)) { - r = l; - l = new(OCONST, Z, Z); - l->vconst = -1; - l->type = types[TINT]; - n->op = OXOR; - n->right = r; - n->left = l; - - if(tcom(l)) - goto bad; - if(tcompat(n, l->type, r->type, tand)) - goto bad; - } - arith(n, 1); - break; - - case ONOT: - if(tcom(l)) - goto bad; - if(isfunct(n)) - break; - if(tcompat(n, T, l->type, tnot)) - goto bad; - n->type = types[TINT]; - break; - - case OANDAND: - case OOROR: - o = tcom(l); - if(o | tcom(r)) - goto bad; - if(tcompat(n, T, l->type, tnot) | - tcompat(n, T, r->type, tnot)) - goto bad; - n->type = types[TINT]; - break; - - case OCOMMA: - o = tcom(l); - if(o | tcom(r)) - goto bad; - n->type = r->type; - break; - - - case OSIGN: /* extension signof(type) returns a hash */ - if(l != Z) { - if(l->op != OSTRING && l->op != OLSTRING) - if(tcomo(l, 0)) - goto bad; - if(l->op == OBIT) { - diag(n, "signof bitfield"); - goto bad; - } - n->type = l->type; - } - if(n->type == T) - goto bad; - if(n->type->width < 0) { - diag(n, "signof undefined type"); - goto bad; - } - n->op = OCONST; - n->left = Z; - n->right = Z; - n->vconst = convvtox(signature(n->type), TULONG); - n->type = types[TULONG]; - break; - - case OSIZE: - if(l != Z) { - if(l->op != OSTRING && l->op != OLSTRING) - if(tcomo(l, 0)) - goto bad; - if(l->op == OBIT) { - diag(n, "sizeof bitfield"); - goto bad; - } - n->type = l->type; - } - if(n->type == T) - goto bad; - if(n->type->width <= 0) { - diag(n, "sizeof undefined type"); - goto bad; - } - if(n->type->etype == TFUNC) { - diag(n, "sizeof function"); - goto bad; - } - n->op = OCONST; - n->left = Z; - n->right = Z; - n->vconst = convvtox(n->type->width, TINT); - n->type = types[TINT]; - break; - - case OFUNC: - o = tcomo(l, 0); - if(o) - goto bad; - if(l->type->etype == TIND && l->type->link->etype == TFUNC) { - l = new1(OIND, l, Z); - l->type = l->left->type->link; - n->left = l; - } - if(tcompat(n, T, l->type, tfunct)) - goto bad; - if(o | tcoma(l, r, l->type->down, 1)) - goto bad; - n->type = l->type->link; - if(!debug['B']) - if(l->type->down == T || l->type->down->etype == TOLD) { - nerrors--; - diag(n, "function args not checked: %F", l); - } - dpcheck(n); - break; - - case ONAME: - if(n->type == T) { - diag(n, "name not declared: %F", n); - goto bad; - } - if(n->type->etype == TENUM) { - n->op = OCONST; - n->type = n->sym->tenum; - if(!typefd[n->type->etype]) - n->vconst = n->sym->vconst; - else - n->fconst = n->sym->fconst; - break; - } - n->addable = 1; - if(n->class == CEXREG) { - n->op = OREGISTER; - // on 386 or amd64, "extern register" generates - // memory references relative to the - // gs or fs segment. - if(thechar == '8' || thechar == '6') // [sic] - n->op = OEXREG; - n->reg = n->sym->offset; - n->xoffset = 0; - break; - } - break; - - case OLSTRING: - if(n->type->link != types[TRUNE]) { - o = outstring(0, 0); - while(o & 3) { - outlstring(&zer, sizeof(TRune)); - o = outlstring(0, 0); - } - } - n->op = ONAME; - n->xoffset = outlstring(n->rstring, n->type->width); - n->addable = 1; - break; - - case OSTRING: - if(n->type->link != types[TCHAR]) { - o = outstring(0, 0); - while(o & 3) { - outstring("", 1); - o = outstring(0, 0); - } - } - n->op = ONAME; - n->xoffset = outstring(n->cstring, n->type->width); - n->addable = 1; - break; - - case OCONST: - break; - - case ODOT: - if(tcom(l)) - goto bad; - if(tcompat(n, T, l->type, tdot)) - goto bad; - if(tcomd(n)) - goto bad; - break; - - case OADDR: - if(tcomo(l, ADDROP)) - goto bad; - if(tlvalue(l)) - goto bad; - if(l->type->nbits) { - diag(n, "address of a bit field"); - goto bad; - } - if(l->op == OREGISTER) { - diag(n, "address of a register"); - goto bad; - } - n->type = typ(TIND, l->type); - n->type->width = types[TIND]->width; - break; - - case OIND: - if(tcom(l)) - goto bad; - if(tcompat(n, T, l->type, tindir)) - goto bad; - n->type = l->type->link; - n->addable = 1; - break; - - case OSTRUCT: - if(tcomx(n)) - goto bad; - break; - } - t = n->type; - if(t == T) - goto bad; - if(t->width < 0) { - snap(t); - if(t->width < 0) { - if(typesu[t->etype] && t->tag) - diag(n, "structure not fully declared %s", t->tag->name); - else - diag(n, "structure not fully declared"); - goto bad; - } - } - if(typeaf[t->etype]) { - if(f & ADDROF) - goto addaddr; - if(f & ADDROP) - warn(n, "address of array/func ignored"); - } - return 0; - -addaddr: - if(tlvalue(n)) - goto bad; - l = new1(OXXX, Z, Z); - *l = *n; - n->op = OADDR; - if(l->type->etype == TARRAY) - l->type = l->type->link; - n->left = l; - n->right = Z; - n->addable = 0; - n->type = typ(TIND, l->type); - n->type->width = types[TIND]->width; - return 0; - -bad: - n->type = T; - return 1; -} - -int -tcoma(Node *l, Node *n, Type *t, int f) -{ - Node *n1; - int o; - - if(t != T) - if(t->etype == TOLD || t->etype == TDOT) /* .../old in prototype */ - t = T; - if(n == Z) { - if(t != T && !sametype(t, types[TVOID])) { - diag(n, "not enough function arguments: %F", l); - return 1; - } - return 0; - } - if(n->op == OLIST) { - o = tcoma(l, n->left, t, 0); - if(t != T) { - t = t->down; - if(t == T) - t = types[TVOID]; - } - return o | tcoma(l, n->right, t, 1); - } - if(f && t != T) - tcoma(l, Z, t->down, 0); - if(tcom(n) || tcompat(n, T, n->type, targ)) - return 1; - if(sametype(t, types[TVOID])) { - diag(n, "too many function arguments: %F", l); - return 1; - } - if(t != T) { - typeext(t, n); - if(stcompat(nodproto, t, n->type, tasign)) { - diag(l, "argument prototype mismatch \"%T\" for \"%T\": %F", - n->type, t, l); - return 1; - } -// switch(t->etype) { -// case TCHAR: -// case TSHORT: -// t = types[TINT]; -// break; -// -// case TUCHAR: -// case TUSHORT: -// t = types[TUINT]; -// break; -// } - } else { - switch(n->type->etype) { - case TCHAR: - case TSHORT: - t = types[TINT]; - break; - - case TUCHAR: - case TUSHORT: - t = types[TUINT]; - break; - - case TFLOAT: - t = types[TDOUBLE]; - } - } - - if(t != T && !sametype(t, n->type)) { - n1 = new1(OXXX, Z, Z); - *n1 = *n; - n->op = OCAST; - n->left = n1; - n->right = Z; - n->type = t; - n->addable = 0; - } - return 0; -} - -int -tcomd(Node *n) -{ - Type *t; - int32 o; - - o = 0; - t = dotsearch(n->sym, n->left->type->link, n, &o); - if(t == T) { - diag(n, "not a member of struct/union: %F", n); - return 1; - } - makedot(n, t, o); - return 0; -} - -int -tcomx(Node *n) -{ - Type *t; - Node *l, *r, **ar, **al; - int e; - - e = 0; - if(n->type->etype != TSTRUCT) { - diag(n, "constructor must be a structure"); - return 1; - } - l = invert(n->left); - n->left = l; - al = &n->left; - for(t = n->type->link; t != T; t = t->down) { - if(l == Z) { - diag(n, "constructor list too short"); - return 1; - } - if(l->op == OLIST) { - r = l->left; - ar = &l->left; - al = &l->right; - l = l->right; - } else { - r = l; - ar = al; - l = Z; - } - if(tcom(r)) - e++; - typeext(t, r); - if(tcompat(n, t, r->type, tasign)) - e++; - constas(n, t, r->type); - if(!e && !sametype(t, r->type)) { - r = new1(OCAST, r, Z); - r->type = t; - *ar = r; - } - } - if(l != Z) { - diag(n, "constructor list too long"); - return 1; - } - return e; -} - -int -tlvalue(Node *n) -{ - - if(!n->addable) { - diag(n, "not an l-value"); - return 1; - } - return 0; -} - -/* - * general rewrite - * (IND(ADDR x)) ==> x - * (ADDR(IND x)) ==> x - * remove some zero operands - * remove no op casts - * evaluate constants - */ -void -ccom(Node *n) -{ - Node *l, *r; - int t; - -loop: - if(n == Z) - return; - l = n->left; - r = n->right; - switch(n->op) { - - case OAS: - case OASXOR: - case OASAND: - case OASOR: - case OASMOD: - case OASLMOD: - case OASLSHR: - case OASASHR: - case OASASHL: - case OASDIV: - case OASLDIV: - case OASMUL: - case OASLMUL: - case OASSUB: - case OASADD: - ccom(l); - ccom(r); - if(n->op == OASLSHR || n->op == OASASHR || n->op == OASASHL) - if(r->op == OCONST) { - t = n->type->width * 8; /* bits per byte */ - if(r->vconst >= t || r->vconst < 0) - warn(n, "stupid shift: %lld", r->vconst); - } - break; - - case OCAST: - ccom(l); - if(l->op == OCONST) { - evconst(n); - if(n->op == OCONST) - break; - } - if(nocast(l->type, n->type)) { - l->type = n->type; - *n = *l; - } - break; - - case OCOND: - ccom(l); - ccom(r); - if(l->op == OCONST) - if(vconst(l) == 0) - *n = *r->right; - else - *n = *r->left; - break; - - case OREGISTER: - case OINDREG: - case OCONST: - case ONAME: - break; - - case OADDR: - ccom(l); - l->etype = TVOID; - if(l->op == OIND) { - l->left->type = n->type; - *n = *l->left; - break; - } - goto common; - - case OIND: - ccom(l); - if(l->op == OADDR) { - l->left->type = n->type; - *n = *l->left; - break; - } - goto common; - - case OEQ: - case ONE: - - case OLE: - case OGE: - case OLT: - case OGT: - - case OLS: - case OHS: - case OLO: - case OHI: - ccom(l); - ccom(r); - if(compar(n, 0) || compar(n, 1)) - break; - relcon(l, r); - relcon(r, l); - goto common; - - case OASHR: - case OASHL: - case OLSHR: - ccom(l); - if(vconst(l) == 0 && !side(r)) { - *n = *l; - break; - } - ccom(r); - if(vconst(r) == 0) { - *n = *l; - break; - } - if(r->op == OCONST) { - t = n->type->width * 8; /* bits per byte */ - if(r->vconst >= t || r->vconst <= -t) - warn(n, "stupid shift: %lld", r->vconst); - } - goto common; - - case OMUL: - case OLMUL: - ccom(l); - t = vconst(l); - if(t == 0 && !side(r)) { - *n = *l; - break; - } - if(t == 1) { - *n = *r; - goto loop; - } - ccom(r); - t = vconst(r); - if(t == 0 && !side(l)) { - *n = *r; - break; - } - if(t == 1) { - *n = *l; - break; - } - goto common; - - case ODIV: - case OLDIV: - ccom(l); - if(vconst(l) == 0 && !side(r)) { - *n = *l; - break; - } - ccom(r); - t = vconst(r); - if(t == 0) { - diag(n, "divide check"); - *n = *r; - break; - } - if(t == 1) { - *n = *l; - break; - } - goto common; - - case OSUB: - ccom(r); - if(r->op == OCONST) { - if(typefd[r->type->etype]) { - n->op = OADD; - r->fconst = -r->fconst; - goto loop; - } else { - n->op = OADD; - r->vconst = -r->vconst; - goto loop; - } - } - ccom(l); - goto common; - - case OXOR: - case OOR: - case OADD: - ccom(l); - if(vconst(l) == 0) { - *n = *r; - goto loop; - } - ccom(r); - if(vconst(r) == 0) { - *n = *l; - break; - } - goto commute; - - case OAND: - ccom(l); - ccom(r); - if(vconst(l) == 0 && !side(r)) { - *n = *l; - break; - } - if(vconst(r) == 0 && !side(l)) { - *n = *r; - break; - } - - commute: - /* look for commutative constant */ - if(r->op == OCONST) { - if(l->op == n->op) { - if(l->left->op == OCONST) { - n->right = l->right; - l->right = r; - goto loop; - } - if(l->right->op == OCONST) { - n->right = l->left; - l->left = r; - goto loop; - } - } - } - if(l->op == OCONST) { - if(r->op == n->op) { - if(r->left->op == OCONST) { - n->left = r->right; - r->right = l; - goto loop; - } - if(r->right->op == OCONST) { - n->left = r->left; - r->left = l; - goto loop; - } - } - } - goto common; - - case OANDAND: - ccom(l); - if(vconst(l) == 0) { - *n = *l; - break; - } - ccom(r); - goto common; - - case OOROR: - ccom(l); - if(l->op == OCONST && l->vconst != 0) { - *n = *l; - n->vconst = 1; - break; - } - ccom(r); - goto common; - - default: - if(l != Z) - ccom(l); - if(r != Z) - ccom(r); - common: - if(l != Z) - if(l->op != OCONST) - break; - if(r != Z) - if(r->op != OCONST) - break; - evconst(n); - } -} - -/* OEQ, ONE, OLE, OLS, OLT, OLO, OGE, OHS, OGT, OHI */ -static char *cmps[12] = -{ - "==", "!=", "<=", "<=", "<", "<", ">=", ">=", ">", ">", -}; - -/* 128-bit numbers */ -typedef struct Big Big; -struct Big -{ - vlong a; - uvlong b; -}; -static int -cmp(Big x, Big y) -{ - if(x.a != y.a){ - if(x.a < y.a) - return -1; - return 1; - } - if(x.b != y.b){ - if(x.b < y.b) - return -1; - return 1; - } - return 0; -} -static Big -add(Big x, int y) -{ - uvlong ob; - - ob = x.b; - x.b += y; - if(y > 0 && x.b < ob) - x.a++; - if(y < 0 && x.b > ob) - x.a--; - return x; -} - -Big -big(vlong a, uvlong b) -{ - Big x; - - x.a = a; - x.b = b; - return x; -} - -int -compar(Node *n, int reverse) -{ - Big lo, hi, x; - int op; - char xbuf[40], cmpbuf[50]; - Node *l, *r; - Type *lt, *rt; - - /* - * The point of this function is to diagnose comparisons - * that can never be true or that look misleading because - * of the `usual arithmetic conversions'. As an example - * of the latter, if x is a ulong, then if(x <= -1) really means - * if(x <= 0xFFFFFFFF), while if(x <= -1LL) really means - * what it says (but 8c compiles it wrong anyway). - */ - - if(reverse){ - r = n->left; - l = n->right; - op = comrel[relindex(n->op)]; - }else{ - l = n->left; - r = n->right; - op = n->op; - } - - /* - * Skip over left casts to find out the original expression range. - */ - while(l->op == OCAST) - l = l->left; - if(l->op == OCONST) - return 0; - lt = l->type; - if(l->op == ONAME && l->sym->type){ - lt = l->sym->type; - if(lt->etype == TARRAY) - lt = lt->link; - } - if(lt == T) - return 0; - if(lt->etype == TXXX || lt->etype > TUVLONG) - return 0; - - /* - * Skip over the right casts to find the on-screen value. - */ - if(r->op != OCONST) - return 0; - while(r->oldop == OCAST && !r->xcast) - r = r->left; - rt = r->type; - if(rt == T) - return 0; - - x.b = r->vconst; - x.a = 0; - if((rt->etype&1) && r->vconst < 0) /* signed negative */ - x.a = ~0ULL; - - if((lt->etype&1)==0){ - /* unsigned */ - lo = big(0, 0); - if(lt->width == 8) - hi = big(0, ~0ULL); - else - hi = big(0, (1ULL<<(l->type->width*8))-1); - }else{ - lo = big(~0ULL, -(1ULL<<(l->type->width*8-1))); - hi = big(0, (1ULL<<(l->type->width*8-1))-1); - } - - switch(op){ - case OLT: - case OLO: - case OGE: - case OHS: - if(cmp(x, lo) <= 0) - goto useless; - if(cmp(x, add(hi, 1)) >= 0) - goto useless; - break; - case OLE: - case OLS: - case OGT: - case OHI: - if(cmp(x, add(lo, -1)) <= 0) - goto useless; - if(cmp(x, hi) >= 0) - goto useless; - break; - case OEQ: - case ONE: - /* - * Don't warn about comparisons if the expression - * is as wide as the value: the compiler-supplied casts - * will make both outcomes possible. - */ - if(lt->width >= rt->width && debug['w'] < 2) - return 0; - if(cmp(x, lo) < 0 || cmp(x, hi) > 0) - goto useless; - break; - } - return 0; - -useless: - if((x.a==0 && x.b<=9) || (x.a==~0LL && x.b >= -9ULL)) - snprint(xbuf, sizeof xbuf, "%lld", x.b); - else if(x.a == 0) - snprint(xbuf, sizeof xbuf, "%#llux", x.b); - else - snprint(xbuf, sizeof xbuf, "%#llx", x.b); - if(reverse) - snprint(cmpbuf, sizeof cmpbuf, "%s %s %T", - xbuf, cmps[relindex(n->op)], lt); - else - snprint(cmpbuf, sizeof cmpbuf, "%T %s %s", - lt, cmps[relindex(n->op)], xbuf); - warn(n, "useless or misleading comparison: %s", cmpbuf); - return 0; -} - diff --git a/src/cmd/cc/com64.c b/src/cmd/cc/com64.c deleted file mode 100644 index f46fedc16..000000000 --- a/src/cmd/cc/com64.c +++ /dev/null @@ -1,644 +0,0 @@ -// Inferno utils/cc/com64.c -// http://code.google.com/p/inferno-os/source/browse/utils/cc/com64.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <u.h> -#include "cc.h" - -/* - * this is machine depend, but it is totally - * common on all of the 64-bit symulating machines. - */ - -#define FNX 100 /* botch -- redefinition */ - -Node* nodaddv; -Node* nodsubv; -Node* nodmulv; -Node* noddivv; -Node* noddivvu; -Node* nodmodv; -Node* nodmodvu; -Node* nodlshv; -Node* nodrshav; -Node* nodrshlv; -Node* nodandv; -Node* nodorv; -Node* nodxorv; -Node* nodnegv; -Node* nodcomv; - -Node* nodtestv; -Node* nodeqv; -Node* nodnev; -Node* nodlev; -Node* nodltv; -Node* nodgev; -Node* nodgtv; -Node* nodhiv; -Node* nodhsv; -Node* nodlov; -Node* nodlsv; - -Node* nodf2v; -Node* nodd2v; -Node* nodp2v; -Node* nodsi2v; -Node* nodui2v; -Node* nodsl2v; -Node* nodul2v; -Node* nodsh2v; -Node* noduh2v; -Node* nodsc2v; -Node* noduc2v; - -Node* nodv2f; -Node* nodv2d; -Node* nodv2ui; -Node* nodv2si; -Node* nodv2ul; -Node* nodv2sl; -Node* nodv2uh; -Node* nodv2sh; -Node* nodv2uc; -Node* nodv2sc; - -Node* nodvpp; -Node* nodppv; -Node* nodvmm; -Node* nodmmv; - -Node* nodvasop; - -char etconv[NALLTYPES]; /* for _vasop */ -Init initetconv[] = -{ - TCHAR, 1, 0, - TUCHAR, 2, 0, - TSHORT, 3, 0, - TUSHORT, 4, 0, - TLONG, 5, 0, - TULONG, 6, 0, - TVLONG, 7, 0, - TUVLONG, 8, 0, - TINT, 9, 0, - TUINT, 10, 0, - -1, 0, 0, -}; - -Node* -fvn(char *name, int type) -{ - Node *n; - - n = new(ONAME, Z, Z); - n->sym = slookup(name); - n->sym->sig = SIGINTERN; - if(fntypes[type] == 0) - fntypes[type] = typ(TFUNC, types[type]); - n->type = fntypes[type]; - n->etype = type; - n->class = CGLOBL; - n->addable = 10; - n->complex = 0; - return n; -} - -void -com64init(void) -{ - Init *p; - - nodaddv = fvn("_addv", TVLONG); - nodsubv = fvn("_subv", TVLONG); - nodmulv = fvn("_mulv", TVLONG); - noddivv = fvn("_divv", TVLONG); - noddivvu = fvn("_divvu", TVLONG); - nodmodv = fvn("_modv", TVLONG); - nodmodvu = fvn("_modvu", TVLONG); - nodlshv = fvn("_lshv", TVLONG); - nodrshav = fvn("_rshav", TVLONG); - nodrshlv = fvn("_rshlv", TVLONG); - nodandv = fvn("_andv", TVLONG); - nodorv = fvn("_orv", TVLONG); - nodxorv = fvn("_xorv", TVLONG); - nodnegv = fvn("_negv", TVLONG); - nodcomv = fvn("_comv", TVLONG); - - nodtestv = fvn("_testv", TLONG); - nodeqv = fvn("_eqv", TLONG); - nodnev = fvn("_nev", TLONG); - nodlev = fvn("_lev", TLONG); - nodltv = fvn("_ltv", TLONG); - nodgev = fvn("_gev", TLONG); - nodgtv = fvn("_gtv", TLONG); - nodhiv = fvn("_hiv", TLONG); - nodhsv = fvn("_hsv", TLONG); - nodlov = fvn("_lov", TLONG); - nodlsv = fvn("_lsv", TLONG); - - nodf2v = fvn("_f2v", TVLONG); - nodd2v = fvn("_d2v", TVLONG); - nodp2v = fvn("_p2v", TVLONG); - nodsi2v = fvn("_si2v", TVLONG); - nodui2v = fvn("_ui2v", TVLONG); - nodsl2v = fvn("_sl2v", TVLONG); - nodul2v = fvn("_ul2v", TVLONG); - nodsh2v = fvn("_sh2v", TVLONG); - noduh2v = fvn("_uh2v", TVLONG); - nodsc2v = fvn("_sc2v", TVLONG); - noduc2v = fvn("_uc2v", TVLONG); - - nodv2f = fvn("_v2f", TFLOAT); - nodv2d = fvn("_v2d", TDOUBLE); - nodv2sl = fvn("_v2sl", TLONG); - nodv2ul = fvn("_v2ul", TULONG); - nodv2si = fvn("_v2si", TINT); - nodv2ui = fvn("_v2ui", TUINT); - nodv2sh = fvn("_v2sh", TSHORT); - nodv2uh = fvn("_v2ul", TUSHORT); - nodv2sc = fvn("_v2sc", TCHAR); - nodv2uc = fvn("_v2uc", TUCHAR); - - nodvpp = fvn("_vpp", TVLONG); - nodppv = fvn("_ppv", TVLONG); - nodvmm = fvn("_vmm", TVLONG); - nodmmv = fvn("_mmv", TVLONG); - - nodvasop = fvn("_vasop", TVLONG); - - for(p = initetconv; p->code >= 0; p++) - etconv[p->code] = p->value; -} - -int -com64(Node *n) -{ - Node *l, *r, *a, *t; - int lv, rv; - - if(n->type == 0) - return 0; - - l = n->left; - r = n->right; - - lv = 0; - if(l && l->type && typev[l->type->etype]) - lv = 1; - rv = 0; - if(r && r->type && typev[r->type->etype]) - rv = 1; - - if(lv) { - switch(n->op) { - case OEQ: - a = nodeqv; - goto setbool; - case ONE: - a = nodnev; - goto setbool; - case OLE: - a = nodlev; - goto setbool; - case OLT: - a = nodltv; - goto setbool; - case OGE: - a = nodgev; - goto setbool; - case OGT: - a = nodgtv; - goto setbool; - case OHI: - a = nodhiv; - goto setbool; - case OHS: - a = nodhsv; - goto setbool; - case OLO: - a = nodlov; - goto setbool; - case OLS: - a = nodlsv; - goto setbool; - - case OANDAND: - case OOROR: - if(machcap(n)) - return 1; - - if(rv) { - r = new(OFUNC, nodtestv, r); - n->right = r; - r->complex = FNX; - r->op = OFUNC; - r->type = types[TLONG]; - } - - case OCOND: - case ONOT: - if(machcap(n)) - return 1; - - l = new(OFUNC, nodtestv, l); - n->left = l; - l->complex = FNX; - l->op = OFUNC; - l->type = types[TLONG]; - n->complex = FNX; - return 1; - } - } - - if(rv) { - if(machcap(n)) - return 1; - switch(n->op) { - case OANDAND: - case OOROR: - r = new(OFUNC, nodtestv, r); - n->right = r; - r->complex = FNX; - r->op = OFUNC; - r->type = types[TLONG]; - return 1; - } - } - - if(typev[n->type->etype]) { - if(machcap(n)) - return 1; - switch(n->op) { - default: - diag(n, "unknown vlong %O", n->op); - case OFUNC: - n->complex = FNX; - case ORETURN: - case OAS: - case OIND: - return 1; - case OADD: - a = nodaddv; - goto setbop; - case OSUB: - a = nodsubv; - goto setbop; - case OMUL: - case OLMUL: - a = nodmulv; - goto setbop; - case ODIV: - a = noddivv; - goto setbop; - case OLDIV: - a = noddivvu; - goto setbop; - case OMOD: - a = nodmodv; - goto setbop; - case OLMOD: - a = nodmodvu; - goto setbop; - case OASHL: - a = nodlshv; - goto setbop; - case OASHR: - a = nodrshav; - goto setbop; - case OLSHR: - a = nodrshlv; - goto setbop; - case OAND: - a = nodandv; - goto setbop; - case OOR: - a = nodorv; - goto setbop; - case OXOR: - a = nodxorv; - goto setbop; - case OPOSTINC: - a = nodvpp; - goto setvinc; - case OPOSTDEC: - a = nodvmm; - goto setvinc; - case OPREINC: - a = nodppv; - goto setvinc; - case OPREDEC: - a = nodmmv; - goto setvinc; - case ONEG: - a = nodnegv; - goto setfnx; - case OCOM: - a = nodcomv; - goto setfnx; - case OCAST: - switch(l->type->etype) { - case TCHAR: - a = nodsc2v; - goto setfnxl; - case TUCHAR: - a = noduc2v; - goto setfnxl; - case TSHORT: - a = nodsh2v; - goto setfnxl; - case TUSHORT: - a = noduh2v; - goto setfnxl; - case TINT: - a = nodsi2v; - goto setfnx; - case TUINT: - a = nodui2v; - goto setfnx; - case TLONG: - a = nodsl2v; - goto setfnx; - case TULONG: - a = nodul2v; - goto setfnx; - case TFLOAT: - a = nodf2v; - goto setfnx; - case TDOUBLE: - a = nodd2v; - goto setfnx; - case TIND: - a = nodp2v; - goto setfnx; - } - diag(n, "unknown %T->vlong cast", l->type); - return 1; - case OASADD: - a = nodaddv; - goto setasop; - case OASSUB: - a = nodsubv; - goto setasop; - case OASMUL: - case OASLMUL: - a = nodmulv; - goto setasop; - case OASDIV: - a = noddivv; - goto setasop; - case OASLDIV: - a = noddivvu; - goto setasop; - case OASMOD: - a = nodmodv; - goto setasop; - case OASLMOD: - a = nodmodvu; - goto setasop; - case OASASHL: - a = nodlshv; - goto setasop; - case OASASHR: - a = nodrshav; - goto setasop; - case OASLSHR: - a = nodrshlv; - goto setasop; - case OASAND: - a = nodandv; - goto setasop; - case OASOR: - a = nodorv; - goto setasop; - case OASXOR: - a = nodxorv; - goto setasop; - } - } - - if(typefd[n->type->etype] && l && l->op == OFUNC) { - switch(n->op) { - case OASADD: - case OASSUB: - case OASMUL: - case OASLMUL: - case OASDIV: - case OASLDIV: - case OASMOD: - case OASLMOD: - case OASASHL: - case OASASHR: - case OASLSHR: - case OASAND: - case OASOR: - case OASXOR: - if(l->right && typev[l->right->etype]) { - diag(n, "sorry float <asop> vlong not implemented\n"); - } - } - } - - if(n->op == OCAST) { - if(l->type && typev[l->type->etype]) { - if(machcap(n)) - return 1; - switch(n->type->etype) { - case TDOUBLE: - a = nodv2d; - goto setfnx; - case TFLOAT: - a = nodv2f; - goto setfnx; - case TLONG: - a = nodv2sl; - goto setfnx; - case TULONG: - a = nodv2ul; - goto setfnx; - case TINT: - a = nodv2si; - goto setfnx; - case TUINT: - a = nodv2ui; - goto setfnx; - case TSHORT: - a = nodv2sh; - goto setfnx; - case TUSHORT: - a = nodv2uh; - goto setfnx; - case TCHAR: - a = nodv2sc; - goto setfnx; - case TUCHAR: - a = nodv2uc; - goto setfnx; - case TIND: // small pun here - a = nodv2ul; - goto setfnx; - } - diag(n, "unknown vlong->%T cast", n->type); - return 1; - } - } - - return 0; - -setbop: - n->left = a; - n->right = new(OLIST, l, r); - n->complex = FNX; - n->op = OFUNC; - return 1; - -setfnxl: - l = new(OCAST, l, 0); - l->type = types[TLONG]; - l->complex = l->left->complex; - -setfnx: - n->left = a; - n->right = l; - n->complex = FNX; - n->op = OFUNC; - return 1; - -setvinc: - n->left = a; - l = new(OADDR, l, Z); - l->type = typ(TIND, l->left->type); - n->right = new(OLIST, l, r); - n->complex = FNX; - n->op = OFUNC; - return 1; - -setbool: - if(machcap(n)) - return 1; - n->left = a; - n->right = new(OLIST, l, r); - n->complex = FNX; - n->op = OFUNC; - n->type = types[TLONG]; - return 1; - -setasop: - if(l->op == OFUNC) { - l = l->right; - goto setasop; - } - - t = new(OCONST, 0, 0); - t->vconst = etconv[l->type->etype]; - t->type = types[TLONG]; - t->addable = 20; - r = new(OLIST, t, r); - - t = new(OADDR, a, 0); - t->type = typ(TIND, a->type); - r = new(OLIST, t, r); - - t = new(OADDR, l, 0); - t->type = typ(TIND, l->type); - r = new(OLIST, t, r); - - n->left = nodvasop; - n->right = r; - n->complex = FNX; - n->op = OFUNC; - - return 1; -} - -void -bool64(Node *n) -{ - Node *n1; - - if(machcap(Z)) - return; - if(typev[n->type->etype]) { - n1 = new(OXXX, 0, 0); - *n1 = *n; - - n->right = n1; - n->left = nodtestv; - n->complex = FNX; - n->addable = 0; - n->op = OFUNC; - n->type = types[TLONG]; - } -} - -/* - * more machine depend stuff. - * this is common for 8,16,32,64 bit machines. - * this is common for ieee machines. - */ -double -convvtof(vlong v) -{ - double d; - - d = v; /* BOTCH */ - return d; -} - -vlong -convftov(double d) -{ - vlong v; - - - v = d; /* BOTCH */ - return v; -} - -double -convftox(double d, int et) -{ - - if(!typefd[et]) - diag(Z, "bad type in castftox %s", tnames[et]); - return d; -} - -vlong -convvtox(vlong c, int et) -{ - int n; - - n = 8 * ewidth[et]; - c &= MASK(n); - if(!typeu[et]) - if(c & SIGN(n)) - c |= ~MASK(n); - return c; -} diff --git a/src/cmd/cc/dcl.c b/src/cmd/cc/dcl.c deleted file mode 100644 index 117508fd6..000000000 --- a/src/cmd/cc/dcl.c +++ /dev/null @@ -1,1707 +0,0 @@ -// Inferno utils/cc/dcl.c -// http://code.google.com/p/inferno-os/source/browse/utils/cc/dcl.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <u.h> -#include "cc.h" -#include "../ld/textflag.h" - -static int haspointers(Type*); - -Node* -dodecl(void (*f)(int,Type*,Sym*), int c, Type *t, Node *n) -{ - Sym *s; - Node *n1; - int32 v; - - nearln = lineno; - lastfield = 0; - -loop: - if(n != Z) - switch(n->op) { - default: - diag(n, "unknown declarator: %O", n->op); - break; - - case OARRAY: - t = typ(TARRAY, t); - t->width = 0; - n1 = n->right; - n = n->left; - if(n1 != Z) { - complex(n1); - v = -1; - if(n1->op == OCONST) - v = n1->vconst; - if(v <= 0) { - diag(n, "array size must be a positive constant"); - v = 1; - } - t->width = v * t->link->width; - } - goto loop; - - case OIND: - t = typ(TIND, t); - t->garb = n->garb; - n = n->left; - goto loop; - - case OFUNC: - t = typ(TFUNC, t); - t->down = fnproto(n); - n = n->left; - goto loop; - - case OBIT: - n1 = n->right; - complex(n1); - lastfield = -1; - if(n1->op == OCONST) - lastfield = n1->vconst; - if(lastfield < 0) { - diag(n, "field width must be non-negative constant"); - lastfield = 1; - } - if(lastfield == 0) { - lastbit = 0; - firstbit = 1; - if(n->left != Z) { - diag(n, "zero width named field"); - lastfield = 1; - } - } - if(!typei[t->etype]) { - diag(n, "field type must be int-like"); - t = types[TINT]; - lastfield = 1; - } - if(lastfield > tfield->width*8) { - diag(n, "field width larger than field unit"); - lastfield = 1; - } - lastbit += lastfield; - if(lastbit > tfield->width*8) { - lastbit = lastfield; - firstbit = 1; - } - n = n->left; - goto loop; - - case ONAME: - if(f == NODECL) - break; - s = n->sym; - (*f)(c, t, s); - if(s->class == CLOCAL) - s = mkstatic(s); - if(dataflag) { - s->dataflag = dataflag; - dataflag = 0; - } else if(s->type != T && !haspointers(s->type)) - s->dataflag = NOPTR; - firstbit = 0; - n->sym = s; - n->type = s->type; - n->xoffset = s->offset; - n->class = s->class; - n->etype = TVOID; - if(n->type != T) - n->etype = n->type->etype; - if(debug['d']) - dbgdecl(s); - acidvar(s); - godefvar(s); - s->varlineno = lineno; - break; - } - lastdcl = t; - return n; -} - -Sym* -mkstatic(Sym *s) -{ - Sym *s1; - - if(s->class != CLOCAL) - return s; - snprint(symb, NSYMB, "%s$%d", s->name, s->block); - s1 = lookup(); - if(s1->class != CSTATIC) { - s1->type = s->type; - s1->offset = s->offset; - s1->block = s->block; - s1->class = CSTATIC; - } - return s1; -} - -/* - * make a copy of a typedef - * the problem is to split out incomplete - * arrays so that it is in the variable - * rather than the typedef. - */ -Type* -tcopy(Type *t) -{ - Type *tl, *tx; - int et; - - if(t == T) - return t; - et = t->etype; - if(typesu[et]) - return t; - tl = tcopy(t->link); - if(tl != t->link || - (et == TARRAY && t->width == 0)) { - tx = copytyp(t); - tx->link = tl; - return tx; - } - return t; -} - -Node* -doinit(Sym *s, Type *t, int32 o, Node *a) -{ - Node *n; - - if(t == T) - return Z; - if(s->class == CEXTERN) { - s->class = CGLOBL; - if(debug['d']) - dbgdecl(s); - } - if(debug['i']) { - print("t = %T; o = %d; n = %s\n", t, o, s->name); - prtree(a, "doinit value"); - } - - - n = initlist; - if(a->op == OINIT) - a = a->left; - initlist = a; - - a = init1(s, t, o, 0); - if(initlist != Z) - diag(initlist, "more initializers than structure: %s", - s->name); - initlist = n; - - return a; -} - -/* - * get next major operator, - * dont advance initlist. - */ -Node* -peekinit(void) -{ - Node *a; - - a = initlist; - -loop: - if(a == Z) - return a; - if(a->op == OLIST) { - a = a->left; - goto loop; - } - return a; -} - -/* - * consume and return next element on - * initlist. expand strings. - */ -Node* -nextinit(void) -{ - Node *a, *b, *n; - - a = initlist; - n = Z; - - if(a == Z) - return a; - if(a->op == OLIST) { - n = a->right; - a = a->left; - } - if(a->op == OUSED) { - a = a->left; - b = new(OCONST, Z, Z); - b->type = a->type->link; - if(a->op == OSTRING) { - b->vconst = convvtox(*a->cstring, TCHAR); - a->cstring++; - } - if(a->op == OLSTRING) { - b->vconst = convvtox(*a->rstring, TRUNE); - a->rstring++; - } - a->type->width -= b->type->width; - if(a->type->width <= 0) - initlist = n; - return b; - } - initlist = n; - return a; -} - -int -isstruct(Node *a, Type *t) -{ - Node *n; - - switch(a->op) { - case ODOTDOT: - n = a->left; - if(n && n->type && sametype(n->type, t)) - return 1; - case OSTRING: - case OLSTRING: - case OCONST: - case OINIT: - case OELEM: - return 0; - } - - n = new(ODOTDOT, Z, Z); - *n = *a; - - /* - * ODOTDOT is a flag for tcom - * a second tcom will not be performed - */ - a->op = ODOTDOT; - a->left = n; - a->right = Z; - - if(tcom(n)) - return 0; - - if(sametype(n->type, t)) - return 1; - return 0; -} - -Node* -init1(Sym *s, Type *t, int32 o, int exflag) -{ - Node *a, *l, *r, nod; - Type *t1; - int32 e, w, so, mw; - - a = peekinit(); - if(a == Z) - return Z; - - if(debug['i']) { - print("t = %T; o = %d; n = %s\n", t, o, s->name); - prtree(a, "init1 value"); - } - - if(exflag && a->op == OINIT) - return doinit(s, t, o, nextinit()); - - switch(t->etype) { - default: - diag(Z, "unknown type in initialization: %T to: %s", t, s->name); - return Z; - - case TCHAR: - case TUCHAR: - case TINT: - case TUINT: - case TSHORT: - case TUSHORT: - case TLONG: - case TULONG: - case TVLONG: - case TUVLONG: - case TFLOAT: - case TDOUBLE: - case TIND: - single: - if(a->op == OARRAY || a->op == OELEM) - return Z; - - a = nextinit(); - if(a == Z) - return Z; - - if(t->nbits) - diag(Z, "cannot initialize bitfields"); - if(s->class == CAUTO) { - l = new(ONAME, Z, Z); - l->sym = s; - l->type = t; - l->etype = TVOID; - if(s->type) - l->etype = s->type->etype; - l->xoffset = s->offset + o; - l->class = s->class; - - l = new(OASI, l, a); - return l; - } - - complex(a); - if(a->type == T) - return Z; - - if(a->op == OCONST) { - if(vconst(a) && t->etype == TIND && a->type && a->type->etype != TIND){ - diag(a, "initialize pointer to an integer: %s", s->name); - return Z; - } - if(!sametype(a->type, t)) { - /* hoop jumping to save malloc */ - if(nodcast == Z) - nodcast = new(OCAST, Z, Z); - nod = *nodcast; - nod.left = a; - nod.type = t; - nod.lineno = a->lineno; - complex(&nod); - if(nod.type) - *a = nod; - } - if(a->op != OCONST) { - diag(a, "initializer is not a constant: %s", - s->name); - return Z; - } - if(vconst(a) == 0) - return Z; - goto gext; - } - if(t->etype == TIND) { - while(a->op == OCAST) { - warn(a, "CAST in initialization ignored"); - a = a->left; - } - if(!sametype(t, a->type)) { - diag(a, "initialization of incompatible pointers: %s\n%T and %T", - s->name, t, a->type); - } - if(a->op == OADDR) - a = a->left; - goto gext; - } - - while(a->op == OCAST) - a = a->left; - if(a->op == OADDR) { - warn(a, "initialize pointer to an integer: %s", s->name); - a = a->left; - goto gext; - } - diag(a, "initializer is not a constant: %s", s->name); - return Z; - - gext: - gextern(s, a, o, t->width); - - return Z; - - case TARRAY: - w = t->link->width; - if(a->op == OSTRING || a->op == OLSTRING) - if(typei[t->link->etype]) { - /* - * get rid of null if sizes match exactly - */ - a = nextinit(); - mw = t->width/w; - so = a->type->width/a->type->link->width; - if(mw && so > mw) { - if(so != mw+1) - diag(a, "string initialization larger than array"); - a->type->width -= a->type->link->width; - } - - /* - * arrange strings to be expanded - * inside OINIT braces. - */ - a = new(OUSED, a, Z); - return doinit(s, t, o, a); - } - - mw = -w; - l = Z; - for(e=0;;) { - /* - * peek ahead for element initializer - */ - a = peekinit(); - if(a == Z) - break; - if(a->op == OELEM && t->link->etype != TSTRUCT) - break; - if(a->op == OARRAY) { - if(e && exflag) - break; - a = nextinit(); - r = a->left; - complex(r); - if(r->op != OCONST) { - diag(r, "initializer subscript must be constant"); - return Z; - } - e = r->vconst; - if(t->width != 0) - if(e < 0 || e*w >= t->width) { - diag(a, "initialization index out of range: %d", e); - continue; - } - } - - so = e*w; - if(so > mw) - mw = so; - if(t->width != 0) - if(mw >= t->width) - break; - r = init1(s, t->link, o+so, 1); - l = newlist(l, r); - e++; - } - if(t->width == 0) - t->width = mw+w; - return l; - - case TUNION: - case TSTRUCT: - /* - * peek ahead to find type of rhs. - * if its a structure, then treat - * this element as a variable - * rather than an aggregate. - */ - if(isstruct(a, t)) - goto single; - - if(t->width <= 0) { - diag(Z, "incomplete structure: %s", s->name); - return Z; - } - l = Z; - - again: - for(t1 = t->link; t1 != T; t1 = t1->down) { - if(a->op == OARRAY && t1->etype != TARRAY) - break; - if(a->op == OELEM) { - if(t1->sym != a->sym) - continue; - nextinit(); - } - r = init1(s, t1, o+t1->offset, 1); - l = newlist(l, r); - a = peekinit(); - if(a == Z) - break; - if(a->op == OELEM) - goto again; - } - if(a && a->op == OELEM) - diag(a, "structure element not found %F", a); - return l; - } -} - -Node* -newlist(Node *l, Node *r) -{ - if(r == Z) - return l; - if(l == Z) - return r; - return new(OLIST, l, r); -} - -static int -haspointers(Type *t) -{ - Type *fld; - - switch(t->etype) { - case TSTRUCT: - for(fld = t->link; fld != T; fld = fld->down) { - if(haspointers(fld)) - return 1; - } - return 0; - case TARRAY: - return haspointers(t->link); - case TIND: - return t->link->etype != TFUNC; - default: - return 0; - } -} - -void -sualign(Type *t) -{ - Type *l; - int32 o, w, maxal; - - o = 0; - maxal = 0; - switch(t->etype) { - - case TSTRUCT: - t->offset = 0; - w = 0; - for(l = t->link; l != T; l = l->down) { - if(l->nbits) { - if(l->shift <= 0) { - l->shift = -l->shift; - w = xround(w, tfield->width); - o = w; - w += tfield->width; - } - l->offset = o; - } else { - if(l->width <= 0) - if(l->down != T) - if(l->sym) - diag(Z, "incomplete structure element: %s", - l->sym->name); - else - diag(Z, "incomplete structure element"); - w = align(w, l, Ael1, &maxal); - l->offset = w; - w = align(w, l, Ael2, &maxal); - } - } - w = align(w, t, Asu2, &maxal); - t->width = w; - t->align = maxal; - acidtype(t); - godeftype(t); - return; - - case TUNION: - t->offset = 0; - w = 0; - for(l = t->link; l != T; l = l->down) { - if(l->width <= 0) - if(l->sym) - diag(Z, "incomplete union element: %s", - l->sym->name); - else - diag(Z, "incomplete union element"); - l->offset = 0; - l->shift = 0; - if((debug['q'] || debug['Q']) && haspointers(l)) - diag(Z, "precise garbage collector cannot handle unions with pointers"); - - o = align(align(0, l, Ael1, &maxal), l, Ael2, &maxal); - if(o > w) - w = o; - } - w = align(w, t, Asu2, &maxal); - t->width = w; - t->align = maxal; - acidtype(t); - godeftype(t); - return; - - default: - diag(Z, "unknown type in sualign: %T", t); - break; - } -} - -int32 -xround(int32 v, int w) -{ - int r; - - if(w <= 0 || w > 8) { - diag(Z, "rounding by %d", w); - w = 1; - } - r = v%w; - if(r) - v += w-r; - return v; -} - -Type* -ofnproto(Node *n) -{ - Type *tl, *tr, *t; - - if(n == Z) - return T; - switch(n->op) { - case OLIST: - tl = ofnproto(n->left); - tr = ofnproto(n->right); - if(tl == T) - return tr; - tl->down = tr; - return tl; - - case ONAME: - t = copytyp(n->sym->type); - t->down = T; - return t; - } - return T; -} - -#define ANSIPROTO 1 -#define OLDPROTO 2 - -void -argmark(Node *n, int pass) -{ - Type *t; - - if(hasdotdotdot(thisfn->link)) - autoffset = align(0, thisfn->link, Aarg0, nil); - stkoff = 0; - for(; n->left != Z; n = n->left) { - if(n->op != OFUNC || n->left->op != ONAME) - continue; - walkparam(n->right, pass); - if(pass != 0 && anyproto(n->right) == OLDPROTO) { - t = typ(TFUNC, n->left->sym->type->link); - t->down = typ(TOLD, T); - t->down->down = ofnproto(n->right); - tmerge(t, n->left->sym); - n->left->sym->type = t; - } - break; - } - autoffset = 0; - stkoff = 0; -} - -void -walkparam(Node *n, int pass) -{ - Sym *s; - Node *n1; - - if(n != Z && n->op == OPROTO && n->left == Z && n->type == types[TVOID]) - return; - -loop: - if(n == Z) - return; - switch(n->op) { - default: - diag(n, "argument not a name/prototype: %O", n->op); - break; - - case OLIST: - walkparam(n->left, pass); - n = n->right; - goto loop; - - case OPROTO: - for(n1 = n; n1 != Z; n1=n1->left) - if(n1->op == ONAME) { - if(pass == 0) { - s = n1->sym; - push1(s); - s->offset = -1; - break; - } - dodecl(pdecl, CPARAM, n->type, n->left); - break; - } - if(n1) - break; - if(pass == 0) { - /* - * extension: - * allow no name in argument declaration - diag(Z, "no name in argument declaration"); - */ - break; - } - dodecl(NODECL, CPARAM, n->type, n->left); - pdecl(CPARAM, lastdcl, S); - break; - - case ODOTDOT: - break; - - case ONAME: - s = n->sym; - if(pass == 0) { - push1(s); - s->offset = -1; - break; - } - if(s->offset != -1) { - if(autoffset == 0) { - firstarg = s; - firstargtype = s->type; - } - autoffset = align(autoffset, s->type, Aarg1, nil); - s->offset = autoffset; - autoffset = align(autoffset, s->type, Aarg2, nil); - } else - dodecl(pdecl, CXXX, types[TINT], n); - break; - } -} - -void -markdcl(void) -{ - Decl *d; - - blockno++; - d = push(); - d->val = DMARK; - d->offset = autoffset; - d->block = autobn; - autobn = blockno; -} - -Node* -revertdcl(void) -{ - Decl *d; - Sym *s; - Node *n, *n1; - - n = Z; - for(;;) { - d = dclstack; - if(d == D) { - diag(Z, "pop off dcl stack"); - break; - } - dclstack = d->link; - s = d->sym; - switch(d->val) { - case DMARK: - autoffset = d->offset; - autobn = d->block; - return n; - - case DAUTO: - if(debug['d']) - print("revert1 \"%s\"\n", s->name); - if(s->aused == 0) { - nearln = s->varlineno; - if(s->class == CAUTO) - warn(Z, "auto declared and not used: %s", s->name); - if(s->class == CPARAM) - warn(Z, "param declared and not used: %s", s->name); - } - if(s->type && (s->type->garb & GVOLATILE)) { - n1 = new(ONAME, Z, Z); - n1->sym = s; - n1->type = s->type; - n1->etype = TVOID; - if(n1->type != T) - n1->etype = n1->type->etype; - n1->xoffset = s->offset; - n1->class = s->class; - - n1 = new(OADDR, n1, Z); - n1 = new(OUSED, n1, Z); - if(n == Z) - n = n1; - else - n = new(OLIST, n1, n); - } - s->type = d->type; - s->class = d->class; - s->offset = d->offset; - s->block = d->block; - s->varlineno = d->varlineno; - s->aused = d->aused; - break; - - case DSUE: - if(debug['d']) - print("revert2 \"%s\"\n", s->name); - s->suetag = d->type; - s->sueblock = d->block; - break; - - case DLABEL: - if(debug['d']) - print("revert3 \"%s\"\n", s->name); - if(s->label && s->label->addable == 0) - warn(s->label, "label declared and not used \"%s\"", s->name); - s->label = Z; - break; - } - } - return n; -} - -Type* -fnproto(Node *n) -{ - int r; - - r = anyproto(n->right); - if(r == 0 || (r & OLDPROTO)) { - if(r & ANSIPROTO) - diag(n, "mixed ansi/old function declaration: %F", n->left); - return T; - } - return fnproto1(n->right); -} - -int -anyproto(Node *n) -{ - int r; - - r = 0; - -loop: - if(n == Z) - return r; - switch(n->op) { - case OLIST: - r |= anyproto(n->left); - n = n->right; - goto loop; - - case ODOTDOT: - case OPROTO: - return r | ANSIPROTO; - } - return r | OLDPROTO; -} - -Type* -fnproto1(Node *n) -{ - Type *t; - - if(n == Z) - return T; - switch(n->op) { - case OLIST: - t = fnproto1(n->left); - if(t != T) - t->down = fnproto1(n->right); - return t; - - case OPROTO: - lastdcl = T; - dodecl(NODECL, CXXX, n->type, n->left); - t = typ(TXXX, T); - if(lastdcl != T) - *t = *paramconv(lastdcl, 1); - return t; - - case ONAME: - diag(n, "incomplete argument prototype"); - return typ(TINT, T); - - case ODOTDOT: - return typ(TDOT, T); - } - diag(n, "unknown op in fnproto"); - return T; -} - -void -dbgdecl(Sym *s) -{ - print("decl \"%s\": C=%s [B=%d:O=%d] T=%T\n", - s->name, cnames[s->class], s->block, s->offset, s->type); -} - -Decl* -push(void) -{ - Decl *d; - - d = alloc(sizeof(*d)); - d->link = dclstack; - dclstack = d; - return d; -} - -Decl* -push1(Sym *s) -{ - Decl *d; - - d = push(); - d->sym = s; - d->val = DAUTO; - d->type = s->type; - d->class = s->class; - d->offset = s->offset; - d->block = s->block; - d->varlineno = s->varlineno; - d->aused = s->aused; - return d; -} - -int -sametype(Type *t1, Type *t2) -{ - - if(t1 == t2) - return 1; - return rsametype(t1, t2, 5, 1); -} - -int -rsametype(Type *t1, Type *t2, int n, int f) -{ - int et; - - n--; - for(;;) { - if(t1 == t2) - return 1; - if(t1 == T || t2 == T) - return 0; - if(n <= 0) - return 1; - et = t1->etype; - if(et != t2->etype) - return 0; - if(et == TFUNC) { - if(!rsametype(t1->link, t2->link, n, 0)) - return 0; - t1 = t1->down; - t2 = t2->down; - while(t1 != T && t2 != T) { - if(t1->etype == TOLD) { - t1 = t1->down; - continue; - } - if(t2->etype == TOLD) { - t2 = t2->down; - continue; - } - while(t1 != T || t2 != T) { - if(!rsametype(t1, t2, n, 0)) - return 0; - t1 = t1->down; - t2 = t2->down; - } - break; - } - return 1; - } - if(et == TARRAY) - if(t1->width != t2->width && t1->width != 0 && t2->width != 0) - return 0; - if(typesu[et]) { - if(t1->link == T) - snap(t1); - if(t2->link == T) - snap(t2); - t1 = t1->link; - t2 = t2->link; - for(;;) { - if(t1 == t2) - return 1; - if(!rsametype(t1, t2, n, 0)) - return 0; - t1 = t1->down; - t2 = t2->down; - } - } - t1 = t1->link; - t2 = t2->link; - if((f || !debug['V']) && et == TIND) { - if(t1 != T && t1->etype == TVOID) - return 1; - if(t2 != T && t2->etype == TVOID) - return 1; - } - } -} - -typedef struct Typetab Typetab; - -struct Typetab{ - int n; - Type **a; -}; - -static int -sigind(Type *t, Typetab *tt) -{ - int n; - Type **a, **na, **p, **e; - - n = tt->n; - a = tt->a; - e = a+n; - /* linear search seems ok */ - for(p = a ; p < e; p++) - if(sametype(*p, t)) - return p-a; - if((n&15) == 0){ - na = malloc((n+16)*sizeof(Type*)); - if(na == nil) { - print("%s: out of memory", argv0); - errorexit(); - } - memmove(na, a, n*sizeof(Type*)); - free(a); - a = tt->a = na; - } - a[tt->n++] = t; - return -1; -} - -static uint32 -signat(Type *t, Typetab *tt) -{ - int i; - Type *t1; - int32 s; - - s = 0; - for(; t; t=t->link) { - s = s*thash1 + thash[t->etype]; - if(t->garb&GINCOMPLETE) - return s; - switch(t->etype) { - default: - return s; - case TARRAY: - s = s*thash2 + 0; /* was t->width */ - break; - case TFUNC: - for(t1=t->down; t1; t1=t1->down) - s = s*thash3 + signat(t1, tt); - break; - case TSTRUCT: - case TUNION: - if((i = sigind(t, tt)) >= 0){ - s = s*thash2 + i; - return s; - } - for(t1=t->link; t1; t1=t1->down) - s = s*thash3 + signat(t1, tt); - return s; - case TIND: - break; - } - } - return s; -} - -uint32 -signature(Type *t) -{ - uint32 s; - Typetab tt; - - tt.n = 0; - tt.a = nil; - s = signat(t, &tt); - free(tt.a); - return s; -} - -uint32 -sign(Sym *s) -{ - uint32 v; - Type *t; - - if(s->sig == SIGINTERN) - return SIGNINTERN; - if((t = s->type) == T) - return 0; - v = signature(t); - if(v == 0) - v = SIGNINTERN; - return v; -} - -void -snap(Type *t) -{ - if(typesu[t->etype]) - if(t->link == T && t->tag && t->tag->suetag) { - t->link = t->tag->suetag->link; - t->width = t->tag->suetag->width; - } -} - -Type* -dotag(Sym *s, int et, int bn) -{ - Decl *d; - - if(bn != 0 && bn != s->sueblock) { - d = push(); - d->sym = s; - d->val = DSUE; - d->type = s->suetag; - d->block = s->sueblock; - s->suetag = T; - } - if(s->suetag == T) { - s->suetag = typ(et, T); - s->sueblock = autobn; - } - if(s->suetag->etype != et) - diag(Z, "tag used for more than one type: %s", - s->name); - if(s->suetag->tag == S) - s->suetag->tag = s; - return s->suetag; -} - -Node* -dcllabel(Sym *s, int f) -{ - Decl *d, d1; - Node *n; - - n = s->label; - if(n != Z) { - if(f) { - if(n->complex) - diag(Z, "label reused: %s", s->name); - n->complex = 1; // declared - } else - n->addable = 1; // used - return n; - } - - d = push(); - d->sym = s; - d->val = DLABEL; - dclstack = d->link; - - d1 = *firstdcl; - *firstdcl = *d; - *d = d1; - - firstdcl->link = d; - firstdcl = d; - - n = new(OXXX, Z, Z); - n->sym = s; - n->complex = f; - n->addable = !f; - s->label = n; - - if(debug['d']) - dbgdecl(s); - return n; -} - -Type* -paramconv(Type *t, int f) -{ - - switch(t->etype) { - case TUNION: - case TSTRUCT: - if(t->width <= 0) - diag(Z, "incomplete structure: %s", t->tag->name); - break; - - case TARRAY: - t = typ(TIND, t->link); - t->width = types[TIND]->width; - break; - - case TFUNC: - t = typ(TIND, t); - t->width = types[TIND]->width; - break; - - case TFLOAT: - if(!f) - t = types[TDOUBLE]; - break; - - case TCHAR: - case TSHORT: - if(!f) - t = types[TINT]; - break; - - case TUCHAR: - case TUSHORT: - if(!f) - t = types[TUINT]; - break; - } - return t; -} - -void -adecl(int c, Type *t, Sym *s) -{ - - if(c == CSTATIC) - c = CLOCAL; - if(t->etype == TFUNC) { - if(c == CXXX) - c = CEXTERN; - if(c == CLOCAL) - c = CSTATIC; - if(c == CAUTO || c == CEXREG) - diag(Z, "function cannot be %s %s", cnames[c], s->name); - } - if(c == CXXX) - c = CAUTO; - if(s) { - if(s->class == CSTATIC) - if(c == CEXTERN || c == CGLOBL) { - warn(Z, "just say static: %s", s->name); - c = CSTATIC; - } - if(s->class == CAUTO || s->class == CPARAM || s->class == CLOCAL) - if(s->block == autobn) - diag(Z, "auto redeclaration of: %s", s->name); - if(c != CPARAM) - push1(s); - s->block = autobn; - s->offset = 0; - s->type = t; - s->class = c; - s->aused = 0; - } - switch(c) { - case CAUTO: - autoffset = align(autoffset, t, Aaut3, nil); - stkoff = maxround(stkoff, autoffset); - s->offset = -autoffset; - break; - - case CPARAM: - if(autoffset == 0) { - firstarg = s; - firstargtype = t; - } - autoffset = align(autoffset, t, Aarg1, nil); - if(s) - s->offset = autoffset; - autoffset = align(autoffset, t, Aarg2, nil); - break; - } -} - -void -pdecl(int c, Type *t, Sym *s) -{ - if(s && s->offset != -1) { - diag(Z, "not a parameter: %s", s->name); - return; - } - t = paramconv(t, c==CPARAM); - if(c == CXXX) - c = CPARAM; - if(c != CPARAM) { - diag(Z, "parameter cannot have class: %s", s->name); - c = CPARAM; - } - adecl(c, t, s); -} - -void -xdecl(int c, Type *t, Sym *s) -{ - int32 o; - - o = 0; - switch(c) { - case CEXREG: - o = exreg(t); - if(o == 0) - c = CEXTERN; - if(s->class == CGLOBL) - c = CGLOBL; - break; - - case CEXTERN: - if(s->class == CGLOBL) - c = CGLOBL; - break; - - case CXXX: - c = CGLOBL; - if(s->class == CEXTERN) - s->class = CGLOBL; - break; - - case CAUTO: - diag(Z, "overspecified class: %s %s %s", s->name, cnames[c], cnames[s->class]); - c = CEXTERN; - break; - - case CTYPESTR: - if(!typesuv[t->etype]) { - diag(Z, "typestr must be struct/union: %s", s->name); - break; - } - dclfunct(t, s); - break; - } - - if(s->class == CSTATIC) - if(c == CEXTERN || c == CGLOBL) { - warn(Z, "overspecified class: %s %s %s", s->name, cnames[c], cnames[s->class]); - c = CSTATIC; - } - if(s->type != T) - if(s->class != c || !sametype(t, s->type) || t->etype == TENUM) { - diag(Z, "external redeclaration of: %s", s->name); - Bprint(&diagbuf, " %s %T %L\n", cnames[c], t, nearln); - Bprint(&diagbuf, " %s %T %L\n", cnames[s->class], s->type, s->varlineno); - } - tmerge(t, s); - s->type = t; - if(c == CTYPEDEF && (typechlv[t->etype] || typefd[t->etype])) { - s->type = copytyp(t); - s->type->tag = s; - } - s->class = c; - s->block = 0; - s->offset = o; -} - -void -tmerge(Type *t1, Sym *s) -{ - Type *ta, *tb, *t2; - - t2 = s->type; - for(;;) { - if(t1 == T || t2 == T || t1 == t2) - break; - if(t1->etype != t2->etype) - break; - switch(t1->etype) { - case TFUNC: - ta = t1->down; - tb = t2->down; - if(ta == T) { - t1->down = tb; - break; - } - if(tb == T) - break; - while(ta != T && tb != T) { - if(ta == tb) - break; - /* ignore old-style flag */ - if(ta->etype == TOLD) { - ta = ta->down; - continue; - } - if(tb->etype == TOLD) { - tb = tb->down; - continue; - } - /* checking terminated by ... */ - if(ta->etype == TDOT && tb->etype == TDOT) { - ta = T; - tb = T; - break; - } - if(!sametype(ta, tb)) - break; - ta = ta->down; - tb = tb->down; - } - if(ta != tb) - diag(Z, "function inconsistently declared: %s", s->name); - - /* take new-style over old-style */ - ta = t1->down; - tb = t2->down; - if(ta != T && ta->etype == TOLD) - if(tb != T && tb->etype != TOLD) - t1->down = tb; - break; - - case TARRAY: - /* should we check array size change? */ - if(t2->width > t1->width) - t1->width = t2->width; - break; - - case TUNION: - case TSTRUCT: - return; - } - t1 = t1->link; - t2 = t2->link; - } -} - -void -edecl(int c, Type *t, Sym *s) -{ - Type *t1; - - if(s == S) - diag(Z, "unnamed structure elements not supported"); - else - if(c != CXXX) - diag(Z, "structure element cannot have class: %s", s->name); - t1 = t; - t = copytyp(t1); - t->sym = s; - t->down = T; - if(lastfield) { - t->shift = lastbit - lastfield; - t->nbits = lastfield; - if(firstbit) - t->shift = -t->shift; - if(typeu[t->etype]) - t->etype = tufield->etype; - else - t->etype = tfield->etype; - } - if(strf == T) - strf = t; - else - strl->down = t; - strl = t; -} - -/* - * this routine is very suspect. - * ansi requires the enum type to - * be represented as an 'int' - * this means that 0x81234567 - * would be illegal. this routine - * makes signed and unsigned go - * to unsigned. - */ -Type* -maxtype(Type *t1, Type *t2) -{ - - if(t1 == T) - return t2; - if(t2 == T) - return t1; - if(t1->etype > t2->etype) - return t1; - return t2; -} - -void -doenum(Sym *s, Node *n) -{ - - if(n) { - complex(n); - if(n->op != OCONST) { - diag(n, "enum not a constant: %s", s->name); - return; - } - en.cenum = n->type; - en.tenum = maxtype(en.cenum, en.tenum); - - if(!typefd[en.cenum->etype]) - en.lastenum = n->vconst; - else - en.floatenum = n->fconst; - } - if(dclstack) - push1(s); - xdecl(CXXX, types[TENUM], s); - - if(en.cenum == T) { - en.tenum = types[TINT]; - en.cenum = types[TINT]; - en.lastenum = 0; - } - s->tenum = en.cenum; - - if(!typefd[s->tenum->etype]) { - s->vconst = convvtox(en.lastenum, s->tenum->etype); - en.lastenum++; - } else { - s->fconst = en.floatenum; - en.floatenum++; - } - - if(debug['d']) - dbgdecl(s); - acidvar(s); - godefvar(s); -} - -void -symadjust(Sym *s, Node *n, int32 del) -{ - - switch(n->op) { - default: - if(n->left) - symadjust(s, n->left, del); - if(n->right) - symadjust(s, n->right, del); - return; - - case ONAME: - if(n->sym == s) - n->xoffset -= del; - return; - - case OCONST: - case OSTRING: - case OLSTRING: - case OINDREG: - case OREGISTER: - return; - } -} - -Node* -contig(Sym *s, Node *n, int32 v) -{ - Node *p, *r, *q, *m; - int32 w; - Type *zt; - - if(debug['i']) { - print("contig v = %d; s = %s\n", v, s->name); - prtree(n, "doinit value"); - } - - if(n == Z) - goto no; - w = s->type->width; - - /* - * nightmare: an automatic array whose size - * increases when it is initialized - */ - if(v != w) { - if(v != 0) - diag(n, "automatic adjustable array: %s", s->name); - v = s->offset; - autoffset = align(autoffset, s->type, Aaut3, nil); - s->offset = -autoffset; - stkoff = maxround(stkoff, autoffset); - symadjust(s, n, v - s->offset); - } - if(w <= ewidth[TIND]) - goto no; - if(n->op == OAS) - diag(Z, "oops in contig"); -/*ZZZ this appears incorrect -need to check if the list completely covers the data. -if not, bail - */ - if(n->op == OLIST) - goto no; - if(n->op == OASI) - if(n->left->type) - if(n->left->type->width == w) - goto no; - while(w & (ewidth[TIND]-1)) - w++; -/* - * insert the following code, where long becomes vlong if pointers are fat - * - *(long**)&X = (long*)((char*)X + sizeof(X)); - do { - *(long**)&X -= 1; - **(long**)&X = 0; - } while(*(long**)&X); - */ - - for(q=n; q->op != ONAME; q=q->left) - ; - - zt = ewidth[TIND] > ewidth[TLONG]? types[TVLONG]: types[TLONG]; - - p = new(ONAME, Z, Z); - *p = *q; - p->type = typ(TIND, zt); - p->xoffset = s->offset; - - r = new(ONAME, Z, Z); - *r = *p; - r = new(OPOSTDEC, r, Z); - - q = new(ONAME, Z, Z); - *q = *p; - q = new(OIND, q, Z); - - m = new(OCONST, Z, Z); - m->vconst = 0; - m->type = zt; - - q = new(OAS, q, m); - - r = new(OLIST, r, q); - - q = new(ONAME, Z, Z); - *q = *p; - r = new(ODWHILE, q, r); - - q = new(ONAME, Z, Z); - *q = *p; - q->type = q->type->link; - q->xoffset += w; - q = new(OADDR, q, 0); - - q = new(OASI, p, q); - r = new(OLIST, q, r); - - n = new(OLIST, r, n); - -no: - return n; -} diff --git a/src/cmd/cc/doc.go b/src/cmd/cc/doc.go deleted file mode 100644 index 10901b441..000000000 --- a/src/cmd/cc/doc.go +++ /dev/null @@ -1,13 +0,0 @@ -// Copyright 2009 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -// +build ignore - -/* - -This directory contains the portable section of the Plan 9 C compilers. -See ../6c, ../8c, and ../5c for more information. - -*/ -package main diff --git a/src/cmd/cc/dpchk.c b/src/cmd/cc/dpchk.c deleted file mode 100644 index 606bf40dd..000000000 --- a/src/cmd/cc/dpchk.c +++ /dev/null @@ -1,793 +0,0 @@ -// Inferno utils/cc/dpchk.c -// http://code.google.com/p/inferno-os/source/browse/utils/cc/dpchk.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <u.h> -#include "cc.h" -#include "y.tab.h" - -enum -{ - Fnone = 0, - Fl, - Fvl, - Fignor, - Fstar, - Fadj, - - Fverb = 10, -}; - -typedef struct Tprot Tprot; -struct Tprot -{ - Type* type; - Bits flag; - Tprot* link; -}; - -typedef struct Tname Tname; -struct Tname -{ - char* name; - int param; - int count; - Tname* link; - Tprot* prot; -}; - -static Type* indchar; -static uchar flagbits[512]; -static char* lastfmt; -static int lastadj; -static int lastverb; -static int nstar; -static Tprot* tprot; -static Tname* tname; - -void -argflag(int c, int v) -{ - - switch(v) { - case Fignor: - case Fstar: - case Fl: - case Fvl: - flagbits[c] = v; - break; - case Fverb: - flagbits[c] = lastverb; -/*print("flag-v %c %d\n", c, lastadj);*/ - lastverb++; - break; - case Fadj: - flagbits[c] = lastadj; -/*print("flag-l %c %d\n", c, lastadj);*/ - lastadj++; - break; - } -} - -Bits -getflag(char *s) -{ - Bits flag; - int f; - Fmt fmt; - Rune c; - - flag = zbits; - nstar = 0; - fmtstrinit(&fmt); - for(;;) { - s += chartorune(&c, s); - if(c == 0 || c >= nelem(flagbits)) - break; - fmtrune(&fmt, c); - f = flagbits[c]; - switch(f) { - case Fnone: - argflag(c, Fverb); - f = flagbits[c]; - break; - case Fstar: - nstar++; - case Fignor: - continue; - case Fl: - if(bset(flag, Fl)) - flag = bor(flag, blsh(Fvl)); - } - flag = bor(flag, blsh(f)); - if(f >= Fverb) - break; - } - free(lastfmt); - lastfmt = fmtstrflush(&fmt); - return flag; -} - -static void -newprot(Sym *m, Type *t, char *s, Tprot **prot) -{ - Bits flag; - Tprot *l; - - if(t == T) { - warn(Z, "%s: newprot: type not defined", m->name); - return; - } - flag = getflag(s); - for(l=*prot; l; l=l->link) - if(beq(flag, l->flag) && sametype(t, l->type)) - return; - l = alloc(sizeof(*l)); - l->type = t; - l->flag = flag; - l->link = *prot; - *prot = l; -} - -static Tname* -newname(char *s, int p, int count) -{ - Tname *l; - - for(l=tname; l; l=l->link) - if(strcmp(l->name, s) == 0) { - if(p >= 0 && l->param != p) - yyerror("vargck %s already defined\n", s); - return l; - } - if(p < 0) - return nil; - - l = alloc(sizeof(*l)); - l->name = s; - l->param = p; - l->link = tname; - l->count = count; - tname = l; - return l; -} - -void -arginit(void) -{ - int i; - -/* debug['F'] = 1;*/ -/* debug['w'] = 1;*/ - - lastadj = Fadj; - lastverb = Fverb; - indchar = typ(TIND, types[TCHAR]); - - memset(flagbits, Fnone, sizeof(flagbits)); - - for(i='0'; i<='9'; i++) - argflag(i, Fignor); - argflag('.', Fignor); - argflag('#', Fignor); - argflag('u', Fignor); - argflag('h', Fignor); - argflag('+', Fignor); - argflag('-', Fignor); - - argflag('*', Fstar); - argflag('l', Fl); - - argflag('o', Fverb); - flagbits['x'] = flagbits['o']; - flagbits['X'] = flagbits['o']; -} - -static char* -getquoted(void) -{ - int c; - Rune r; - Fmt fmt; - - c = getnsc(); - if(c != '"') - return nil; - fmtstrinit(&fmt); - for(;;) { - r = getr(); - if(r == '\n') { - free(fmtstrflush(&fmt)); - return nil; - } - if(r == '"') - break; - fmtrune(&fmt, r); - } - free(lastfmt); - lastfmt = fmtstrflush(&fmt); - return strdup(lastfmt); -} - -void -pragvararg(void) -{ - Sym *s; - int n, c; - char *t; - Type *ty; - Tname *l; - - if(!debug['F']) - goto out; - s = getsym(); - if(s && strcmp(s->name, "argpos") == 0) - goto ckpos; - if(s && strcmp(s->name, "type") == 0) - goto cktype; - if(s && strcmp(s->name, "flag") == 0) - goto ckflag; - if(s && strcmp(s->name, "countpos") == 0) - goto ckcount; - yyerror("syntax in #pragma varargck"); - goto out; - -ckpos: -/*#pragma varargck argpos warn 2*/ - s = getsym(); - if(s == S) - goto bad; - n = getnsn(); - if(n < 0) - goto bad; - newname(s->name, n, 0); - goto out; - -ckcount: -/*#pragma varargck countpos name 2*/ - s = getsym(); - if(s == S) - goto bad; - n = getnsn(); - if(n < 0) - goto bad; - newname(s->name, 0, n); - goto out; - -ckflag: -/*#pragma varargck flag 'c'*/ - c = getnsc(); - if(c != '\'') - goto bad; - c = getr(); - if(c == '\\') - c = getr(); - else if(c == '\'') - goto bad; - if(c == '\n') - goto bad; - if(getc() != '\'') - goto bad; - argflag(c, Fignor); - goto out; - -cktype: - c = getnsc(); - unget(c); - if(c != '"') { -/*#pragma varargck type name int*/ - s = getsym(); - if(s == S) - goto bad; - l = newname(s->name, -1, -1); - s = getsym(); - if(s == S) - goto bad; - ty = s->type; - while((c = getnsc()) == '*') - ty = typ(TIND, ty); - unget(c); - newprot(s, ty, "a", &l->prot); - goto out; - } - -/*#pragma varargck type O int*/ - t = getquoted(); - if(t == nil) - goto bad; - s = getsym(); - if(s == S) - goto bad; - ty = s->type; - while((c = getnsc()) == '*') - ty = typ(TIND, ty); - unget(c); - newprot(s, ty, t, &tprot); - goto out; - -bad: - yyerror("syntax in #pragma varargck"); - -out: - while(getnsc() != '\n') - ; -} - -Node* -nextarg(Node *n, Node **a) -{ - if(n == Z) { - *a = Z; - return Z; - } - if(n->op == OLIST) { - *a = n->left; - return n->right; - } - *a = n; - return Z; -} - -void -checkargs(Node *nn, char *s, int pos) -{ - Node *a, *n; - Bits flag; - Tprot *l; - - if(!debug['F']) - return; - n = nn; - for(;;) { - s = strchr(s, '%'); - if(s == 0) { - nextarg(n, &a); - if(a != Z) - warn(nn, "more arguments than format %T", - a->type); - return; - } - s++; - flag = getflag(s); - while(nstar > 0) { - n = nextarg(n, &a); - pos++; - nstar--; - if(a == Z) { - warn(nn, "more format than arguments %s", - lastfmt); - return; - } - if(a->type == T) - continue; - if(!sametype(types[TINT], a->type) && - !sametype(types[TUINT], a->type)) - warn(nn, "format mismatch '*' in %s %T, arg %d", - lastfmt, a->type, pos); - } - for(l=tprot; l; l=l->link) - if(sametype(types[TVOID], l->type)) { - if(beq(flag, l->flag)) { - s++; - goto loop; - } - } - - n = nextarg(n, &a); - pos++; - if(a == Z) { - warn(nn, "more format than arguments %s", - lastfmt); - return; - } - if(a->type == 0) - continue; - for(l=tprot; l; l=l->link) - if(sametype(a->type, l->type)) { -/*print("checking %T/%ux %T/%ux\n", a->type, flag.b[0], l->type, l->flag.b[0]);*/ - if(beq(flag, l->flag)) - goto loop; - } - warn(nn, "format mismatch %s %T, arg %d", lastfmt, a->type, pos); - loop:; - } -} - -void -dpcheck(Node *n) -{ - char *s; - Node *a, *b; - Tname *l; - Tprot *tl; - int i, j; - - if(n == Z) - return; - b = n->left; - if(b == Z || b->op != ONAME) - return; - s = b->sym->name; - for(l=tname; l; l=l->link) - if(strcmp(s, l->name) == 0) - break; - if(l == 0) - return; - - if(l->count > 0) { - // fetch count, then check remaining length - i = l->count; - a = nil; - b = n->right; - while(i > 0) { - b = nextarg(b, &a); - i--; - } - if(a == Z) { - diag(n, "can't find count arg"); - return; - } - if(a->op != OCONST || !typechl[a->type->etype]) { - diag(n, "count is invalid constant"); - return; - } - j = a->vconst; - i = 0; - while(b != Z) { - b = nextarg(b, &a); - i++; - } - if(i != j) - diag(n, "found %d argument%s after count %d", i, i == 1 ? "" : "s", j); - } - - if(l->prot != nil) { - // check that all arguments after param or count - // are listed in type list. - i = l->count; - if(i == 0) - i = l->param; - if(i == 0) - return; - a = nil; - b = n->right; - while(i > 0) { - b = nextarg(b, &a); - i--; - } - if(a == Z) { - diag(n, "can't find count/param arg"); - return; - } - while(b != Z) { - b = nextarg(b, &a); - for(tl=l->prot; tl; tl=tl->link) - if(sametype(a->type, tl->type)) - break; - if(tl == nil) - diag(a, "invalid type %T in call to %s", a->type, s); - } - } - - if(l->param <= 0) - return; - i = l->param; - a = nil; - b = n->right; - while(i > 0) { - b = nextarg(b, &a); - i--; - } - if(a == Z) { - diag(n, "can't find format arg"); - return; - } - if(!sametype(indchar, a->type)) { - diag(n, "format arg type %T", a->type); - return; - } - if(a->op != OADDR || a->left->op != ONAME || a->left->sym != symstring) { -/* warn(n, "format arg not constant string");*/ - return; - } - s = a->left->cstring; - checkargs(b, s, l->param); -} - -void -pragpack(void) -{ - Sym *s; - - packflg = 0; - s = getsym(); - if(s) { - packflg = atoi(s->name+1); - if(strcmp(s->name, "on") == 0 || - strcmp(s->name, "yes") == 0) - packflg = 1; - } - while(getnsc() != '\n') - ; - if(debug['f']) - if(packflg) - print("%4d: pack %d\n", lineno, packflg); - else - print("%4d: pack off\n", lineno); -} - -void -pragfpround(void) -{ - Sym *s; - - fproundflg = 0; - s = getsym(); - if(s) { - fproundflg = atoi(s->name+1); - if(strcmp(s->name, "on") == 0 || - strcmp(s->name, "yes") == 0) - fproundflg = 1; - } - while(getnsc() != '\n') - ; - if(debug['f']) - if(fproundflg) - print("%4d: fproundflg %d\n", lineno, fproundflg); - else - print("%4d: fproundflg off\n", lineno); -} - -void -pragtextflag(void) -{ - Sym *s; - - s = getsym(); - if(s == S) { - textflag = getnsn(); - } else { - if(s->macro) { - macexpand(s, symb); - } - if(symb[0] < '0' || symb[0] > '9') - yyerror("pragma textflag not an integer"); - textflag = atoi(symb); - } - while(getnsc() != '\n') - ; - if(debug['f']) - print("%4d: textflag %d\n", lineno, textflag); -} - -void -pragdataflag(void) -{ - Sym *s; - - s = getsym(); - if(s == S) { - dataflag = getnsn(); - } else { - if(s->macro) { - macexpand(s, symb); - } - if(symb[0] < '0' || symb[0] > '9') - yyerror("pragma dataflag not an integer"); - dataflag = atoi(symb); - } - while(getnsc() != '\n') - ; - if(debug['f']) - print("%4d: dataflag %d\n", lineno, dataflag); -} - -void -pragincomplete(void) -{ - Sym *s; - Type *t; - int istag, w, et; - - istag = 0; - s = getsym(); - if(s == nil) - goto out; - et = 0; - w = s->lexical; - if(w == LSTRUCT) - et = TSTRUCT; - else if(w == LUNION) - et = TUNION; - if(et != 0){ - s = getsym(); - if(s == nil){ - yyerror("missing struct/union tag in pragma incomplete"); - goto out; - } - if(s->lexical != LNAME && s->lexical != LTYPE){ - yyerror("invalid struct/union tag: %s", s->name); - goto out; - } - dotag(s, et, 0); - istag = 1; - }else if(strcmp(s->name, "_off_") == 0){ - debug['T'] = 0; - goto out; - }else if(strcmp(s->name, "_on_") == 0){ - debug['T'] = 1; - goto out; - } - t = s->type; - if(istag) - t = s->suetag; - if(t == T) - yyerror("unknown type %s in pragma incomplete", s->name); - else if(!typesu[t->etype]) - yyerror("not struct/union type in pragma incomplete: %s", s->name); - else - t->garb |= GINCOMPLETE; -out: - while(getnsc() != '\n') - ; - if(debug['f']) - print("%s incomplete\n", s->name); -} - -Sym* -getimpsym(void) -{ - int c; - char *cp; - - c = getnsc(); - if(isspace(c) || c == '"') { - unget(c); - return S; - } - for(cp = symb;;) { - if(cp <= symb+NSYMB-4) - *cp++ = c; - c = getc(); - if(c > 0 && !isspace(c) && c != '"') - continue; - unget(c); - break; - } - *cp = 0; - if(cp > symb+NSYMB-4) - yyerror("symbol too large: %s", symb); - return lookup(); -} - -static int -more(void) -{ - int c; - - do - c = getnsc(); - while(c == ' ' || c == '\t'); - unget(c); - return c != '\n'; -} - -void -pragcgo(char *verb) -{ - Sym *local, *remote; - char *p; - - if(strcmp(verb, "cgo_dynamic_linker") == 0 || strcmp(verb, "dynlinker") == 0) { - p = getquoted(); - if(p == nil) - goto err1; - fmtprint(&pragcgobuf, "cgo_dynamic_linker %q\n", p); - goto out; - - err1: - yyerror("usage: #pragma cgo_dynamic_linker \"path\""); - goto out; - } - - if(strcmp(verb, "dynexport") == 0) - verb = "cgo_export_dynamic"; - if(strcmp(verb, "cgo_export_static") == 0 || strcmp(verb, "cgo_export_dynamic") == 0) { - local = getimpsym(); - if(local == nil) - goto err2; - if(!more()) { - fmtprint(&pragcgobuf, "%s %q\n", verb, local->name); - goto out; - } - remote = getimpsym(); - if(remote == nil) - goto err2; - fmtprint(&pragcgobuf, "%s %q %q\n", verb, local->name, remote->name); - goto out; - - err2: - yyerror("usage: #pragma %s local [remote]", verb); - goto out; - } - - if(strcmp(verb, "cgo_import_dynamic") == 0 || strcmp(verb, "dynimport") == 0) { - local = getimpsym(); - if(local == nil) - goto err3; - if(!more()) { - fmtprint(&pragcgobuf, "cgo_import_dynamic %q\n", local->name); - goto out; - } - remote = getimpsym(); - if(remote == nil) - goto err3; - if(!more()) { - fmtprint(&pragcgobuf, "cgo_import_dynamic %q %q\n", local->name, remote->name); - goto out; - } - p = getquoted(); - if(p == nil) - goto err3; - fmtprint(&pragcgobuf, "cgo_import_dynamic %q %q %q\n", local->name, remote->name, p); - goto out; - - err3: - yyerror("usage: #pragma cgo_import_dynamic local [remote [\"library\"]]"); - goto out; - } - - if(strcmp(verb, "cgo_import_static") == 0) { - local = getimpsym(); - if(local == nil) - goto err4; - fmtprint(&pragcgobuf, "cgo_import_static %q\n", local->name); - goto out; - - err4: - yyerror("usage: #pragma cgo_import_static local [remote]"); - goto out; - } - - if(strcmp(verb, "cgo_ldflag") == 0) { - p = getquoted(); - if(p == nil) - goto err5; - fmtprint(&pragcgobuf, "cgo_ldflag %q\n", p); - goto out; - - err5: - yyerror("usage: #pragma cgo_ldflag \"arg\""); - goto out; - } - -out: - while(getnsc() != '\n') - ; -} diff --git a/src/cmd/cc/funct.c b/src/cmd/cc/funct.c deleted file mode 100644 index 92c067db8..000000000 --- a/src/cmd/cc/funct.c +++ /dev/null @@ -1,431 +0,0 @@ -// Inferno utils/cc/funct.c -// http://code.google.com/p/inferno-os/source/browse/utils/cc/funct.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <u.h> -#include "cc.h" - -typedef struct Ftab Ftab; -struct Ftab -{ - char op; - char* name; - char typ; -}; -typedef struct Gtab Gtab; -struct Gtab -{ - char etype; - char* name; -}; - -Ftab ftabinit[OEND]; -Gtab gtabinit[NALLTYPES]; - -int -isfunct(Node *n) -{ - Type *t, *t1; - Funct *f; - Node *l; - Sym *s; - int o; - - o = n->op; - if(n->left == Z) - goto no; - t = n->left->type; - if(t == T) - goto no; - f = t->funct; - - switch(o) { - case OAS: // put cast on rhs - case OASI: - case OASADD: - case OASAND: - case OASASHL: - case OASASHR: - case OASDIV: - case OASLDIV: - case OASLMOD: - case OASLMUL: - case OASLSHR: - case OASMOD: - case OASMUL: - case OASOR: - case OASSUB: - case OASXOR: - if(n->right == Z) - goto no; - t1 = n->right->type; - if(t1 == T) - goto no; - if(t1->funct == f) - break; - - l = new(OXXX, Z, Z); - *l = *n->right; - - n->right->left = l; - n->right->right = Z; - n->right->type = t; - n->right->op = OCAST; - - if(!isfunct(n->right)) - prtree(n, "isfunc !"); - break; - - case OCAST: // t f(T) or T f(t) - t1 = n->type; - if(t1 == T) - goto no; - if(f != nil) { - s = f->castfr[t1->etype]; - if(s == S) - goto no; - n->right = n->left; - goto build; - } - f = t1->funct; - if(f != nil) { - s = f->castto[t->etype]; - if(s == S) - goto no; - n->right = n->left; - goto build; - } - goto no; - } - - if(f == nil) - goto no; - s = f->sym[o]; - if(s == S) - goto no; - - /* - * the answer is yes, - * now we rewrite the node - * and give diagnostics - */ - switch(o) { - default: - diag(n, "isfunct op missing %O\n", o); - goto bad; - - case OADD: // T f(T, T) - case OAND: - case OASHL: - case OASHR: - case ODIV: - case OLDIV: - case OLMOD: - case OLMUL: - case OLSHR: - case OMOD: - case OMUL: - case OOR: - case OSUB: - case OXOR: - - case OEQ: // int f(T, T) - case OGE: - case OGT: - case OHI: - case OHS: - case OLE: - case OLO: - case OLS: - case OLT: - case ONE: - if(n->right == Z) - goto bad; - t1 = n->right->type; - if(t1 == T) - goto bad; - if(t1->funct != f) - goto bad; - n->right = new(OLIST, n->left, n->right); - break; - - case OAS: // structure copies done by the compiler - case OASI: - goto no; - - case OASADD: // T f(T*, T) - case OASAND: - case OASASHL: - case OASASHR: - case OASDIV: - case OASLDIV: - case OASLMOD: - case OASLMUL: - case OASLSHR: - case OASMOD: - case OASMUL: - case OASOR: - case OASSUB: - case OASXOR: - if(n->right == Z) - goto bad; - t1 = n->right->type; - if(t1 == T) - goto bad; - if(t1->funct != f) - goto bad; - n->right = new(OLIST, new(OADDR, n->left, Z), n->right); - break; - - case OPOS: // T f(T) - case ONEG: - case ONOT: - case OCOM: - n->right = n->left; - break; - - - } - -build: - l = new(ONAME, Z, Z); - l->sym = s; - l->type = s->type; - l->etype = s->type->etype; - l->xoffset = s->offset; - l->class = s->class; - tcomo(l, 0); - - n->op = OFUNC; - n->left = l; - n->type = l->type->link; - if(tcompat(n, T, l->type, tfunct)) - goto bad; - if(tcoma(n->left, n->right, l->type->down, 1)) - goto bad; - return 1; - -no: - return 0; - -bad: - diag(n, "can't rewrite typestr for op %O\n", o); - prtree(n, "isfunct"); - n->type = T; - return 1; -} - -void -dclfunct(Type *t, Sym *s) -{ - Funct *f; - Node *n; - Type *f1, *f2, *f3, *f4; - int o, i, c; - char str[100]; - - if(t->funct) - return; - - // recognize generated tag of dorm _%d_ - if(t->tag == S) - goto bad; - for(i=0; c = t->tag->name[i]; i++) { - if(c == '_') { - if(i == 0 || t->tag->name[i+1] == 0) - continue; - break; - } - if(c < '0' || c > '9') - break; - } - if(c == 0) - goto bad; - - f = alloc(sizeof(*f)); - for(o=0; o<nelem(f->sym); o++) - f->sym[o] = S; - - t->funct = f; - - f1 = typ(TFUNC, t); - f1->down = copytyp(t); - f1->down->down = t; - - f2 = typ(TFUNC, types[TINT]); - f2->down = copytyp(t); - f2->down->down = t; - - f3 = typ(TFUNC, t); - f3->down = typ(TIND, t); - f3->down->down = t; - - f4 = typ(TFUNC, t); - f4->down = t; - - for(i=0;; i++) { - o = ftabinit[i].op; - if(o == OXXX) - break; - sprint(str, "%s_%s_", t->tag->name, ftabinit[i].name); - n = new(ONAME, Z, Z); - n->sym = slookup(str); - f->sym[o] = n->sym; - switch(ftabinit[i].typ) { - default: - diag(Z, "dclfunct op missing %d\n", ftabinit[i].typ); - break; - - case 1: // T f(T,T) + - dodecl(xdecl, CEXTERN, f1, n); - break; - - case 2: // int f(T,T) == - dodecl(xdecl, CEXTERN, f2, n); - break; - - case 3: // void f(T*,T) += - dodecl(xdecl, CEXTERN, f3, n); - break; - - case 4: // T f(T) ~ - dodecl(xdecl, CEXTERN, f4, n); - break; - } - } - for(i=0;; i++) { - o = gtabinit[i].etype; - if(o == TXXX) - break; - - /* - * OCAST types T1 _T2_T1_(T2) - */ - sprint(str, "_%s%s_", gtabinit[i].name, t->tag->name); - n = new(ONAME, Z, Z); - n->sym = slookup(str); - f->castto[o] = n->sym; - - f1 = typ(TFUNC, t); - f1->down = types[o]; - dodecl(xdecl, CEXTERN, f1, n); - - sprint(str, "%s_%s_", t->tag->name, gtabinit[i].name); - n = new(ONAME, Z, Z); - n->sym = slookup(str); - f->castfr[o] = n->sym; - - f1 = typ(TFUNC, types[o]); - f1->down = t; - dodecl(xdecl, CEXTERN, f1, n); - } - return; -bad: - diag(Z, "dclfunct bad %T %s\n", t, s->name); -} - -Gtab gtabinit[NALLTYPES] = -{ - TCHAR, "c", - TUCHAR, "uc", - TSHORT, "h", - TUSHORT, "uh", - TINT, "i", - TUINT, "ui", - TLONG, "l", - TULONG, "ul", - TVLONG, "v", - TUVLONG, "uv", - TFLOAT, "f", - TDOUBLE, "d", - TXXX -}; - -Ftab ftabinit[OEND] = -{ - OADD, "add", 1, - OAND, "and", 1, - OASHL, "ashl", 1, - OASHR, "ashr", 1, - ODIV, "div", 1, - OLDIV, "ldiv", 1, - OLMOD, "lmod", 1, - OLMUL, "lmul", 1, - OLSHR, "lshr", 1, - OMOD, "mod", 1, - OMUL, "mul", 1, - OOR, "or", 1, - OSUB, "sub", 1, - OXOR, "xor", 1, - - OEQ, "eq", 2, - OGE, "ge", 2, - OGT, "gt", 2, - OHI, "hi", 2, - OHS, "hs", 2, - OLE, "le", 2, - OLO, "lo", 2, - OLS, "ls", 2, - OLT, "lt", 2, - ONE, "ne", 2, - - OASADD, "asadd", 3, - OASAND, "asand", 3, - OASASHL, "asashl", 3, - OASASHR, "asashr", 3, - OASDIV, "asdiv", 3, - OASLDIV, "asldiv", 3, - OASLMOD, "aslmod", 3, - OASLMUL, "aslmul", 3, - OASLSHR, "aslshr", 3, - OASMOD, "asmod", 3, - OASMUL, "asmul", 3, - OASOR, "asor", 3, - OASSUB, "assub", 3, - OASXOR, "asxor", 3, - - OPOS, "pos", 4, - ONEG, "neg", 4, - OCOM, "com", 4, - ONOT, "not", 4, - -// OPOSTDEC, -// OPOSTINC, -// OPREDEC, -// OPREINC, - - OXXX, -}; - -// Node* nodtestv; - -// Node* nodvpp; -// Node* nodppv; -// Node* nodvmm; -// Node* nodmmv; diff --git a/src/cmd/cc/godefs.c b/src/cmd/cc/godefs.c deleted file mode 100644 index d9f67f0ae..000000000 --- a/src/cmd/cc/godefs.c +++ /dev/null @@ -1,367 +0,0 @@ -// cmd/cc/godefs.cc -// -// derived from pickle.cc which itself was derived from acid.cc. -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009-2011 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <u.h> -#include "cc.h" - -static int upper; - -static char *kwd[] = -{ - "_bool", - "_break", - "_byte", - "_case", - "_chan", - "_complex128", - "_complex64", - "_const", - "_continue", - "_default", - "_defer", - "_else", - "_fallthrough", - "_false", - "_float32", - "_float64", - "_for", - "_func", - "_go", - "_goto", - "_if", - "_import", - "_int", - "_int16", - "_int32", - "_int64", - "_int8", - "_interface", - "_intptr", - "_map", - "_package", - "_panic", - "_range", - "_return", - "_select", - "_string", - "_struct", - "_switch", - "_true", - "_type", - "_uint", - "_uint16", - "_uint32", - "_uint64", - "_uint8", - "_uintptr", - "_var", -}; - -static char* -pmap(char *s) -{ - int i, bot, top, mid; - - bot = -1; - top = nelem(kwd); - while(top - bot > 1){ - mid = (bot + top) / 2; - i = strcmp(kwd[mid]+1, s); - if(i == 0) - return kwd[mid]; - if(i < 0) - bot = mid; - else - top = mid; - } - - return s; -} - - -int -Uconv(Fmt *fp) -{ - char str[STRINGSZ+1]; - char *s, *n; - int i; - - str[0] = 0; - s = va_arg(fp->args, char*); - - // strip package name - n = strrchr(s, '.'); - if(n != nil) - s = n + 1; - - if(s && *s) { - if(upper) - str[0] = toupper((uchar)*s); - else - str[0] = tolower((uchar)*s); - for(i = 1; i < STRINGSZ && s[i] != 0; i++) - str[i] = tolower((uchar)s[i]); - str[i] = 0; - } - - return fmtstrcpy(fp, pmap(str)); -} - - -static Sym* -findsue(Type *t) -{ - int h; - Sym *s; - - if(t != T) - for(h=0; h<nelem(hash); h++) - for(s = hash[h]; s != S; s = s->link) - if(s->suetag && s->suetag->link == t) - return s; - return 0; -} - -static void -printtypename(Type *t) -{ - Sym *s; - int w; - char *n; - - for( ; t != nil; t = t->link) { - switch(t->etype) { - case TIND: - // Special handling of *void. - if(t->link != nil && t->link->etype==TVOID) { - Bprint(&outbuf, "unsafe.Pointer"); - return; - } - // *func == func - if(t->link != nil && t->link->etype==TFUNC) - continue; - Bprint(&outbuf, "*"); - continue; - case TARRAY: - w = t->width; - if(t->link && t->link->width) - w /= t->link->width; - Bprint(&outbuf, "[%d]", w); - continue; - } - break; - } - - if(t == nil) { - Bprint(&outbuf, "bad // should not happen"); - return; - } - - switch(t->etype) { - case TINT: - case TUINT: - case TCHAR: - case TUCHAR: - case TSHORT: - case TUSHORT: - case TLONG: - case TULONG: - case TVLONG: - case TUVLONG: - case TFLOAT: - case TDOUBLE: - // All names used in the runtime code should be typedefs. - if(t->tag != nil) { - if(strcmp(t->tag->name, "intgo") == 0) - Bprint(&outbuf, "int"); - else if(strcmp(t->tag->name, "uintgo") == 0) - Bprint(&outbuf, "uint"); - else - Bprint(&outbuf, "%s", t->tag->name); - } else - Bprint(&outbuf, "C.%T", t); - break; - case TUNION: - case TSTRUCT: - s = findsue(t->link); - n = "bad"; - if(s != S) - n = s->name; - else if(t->tag) - n = t->tag->name; - if(strcmp(n, "String") == 0) - Bprint(&outbuf, "string"); - else if(strcmp(n, "Slice") == 0) - Bprint(&outbuf, "[]byte"); - else if(strcmp(n, "Eface") == 0) - Bprint(&outbuf, "interface{}"); - else - Bprint(&outbuf, "%U", n); - break; - case TFUNC: - // There's no equivalent to a C function in the Go world. - Bprint(&outbuf, "unsafe.Pointer"); - break; - case TDOT: - Bprint(&outbuf, "...interface{}"); - break; - default: - Bprint(&outbuf, " weird<%T>", t); - } -} - -static int -dontrun(void) -{ - Io *i; - int n; - - if(!debug['q'] && !debug['Q']) - return 1; - if(debug['q'] + debug['Q'] > 1) { - n = 0; - for(i=iostack; i; i=i->link) - n++; - if(n > 1) - return 1; - } - - upper = debug['Q']; - return 0; -} - -void -godeftype(Type *t) -{ - Sym *s; - Type *l; - int gotone; - - if(dontrun()) - return; - - switch(t->etype) { - case TUNION: - case TSTRUCT: - s = findsue(t->link); - if(s == S) { - Bprint(&outbuf, "/* can't find %T */\n\n", t); - return; - } - - gotone = 0; // for unions, take first member of size equal to union - Bprint(&outbuf, "type %U struct {\n", s->name); - for(l = t->link; l != T; l = l->down) { - Bprint(&outbuf, "\t"); - if(t->etype == TUNION) { - if(!gotone && l->width == t->width) - gotone = 1; - else - Bprint(&outbuf, "// (union)\t"); - } - if(l->sym != nil) // not anonymous field - Bprint(&outbuf, "%U\t", l->sym->name); - printtypename(l); - Bprint(&outbuf, "\n"); - } - Bprint(&outbuf, "}\n\n"); - break; - - default: - Bprint(&outbuf, "/* %T */\n\n", t); - break; - } -} - -void -godefvar(Sym *s) -{ - Type *t, *t1; - char n; - - if(dontrun()) - return; - - t = s->type; - if(t == nil) - return; - - switch(t->etype) { - case TENUM: - if(!typefd[t->etype]) - Bprint(&outbuf, "const %s = %lld\n", s->name, s->vconst); - else - Bprint(&outbuf, "const %s = %f\n;", s->name, s->fconst); - break; - - case TFUNC: - Bprint(&outbuf, "func %U(", s->name); - n = 'a'; - for(t1 = t->down; t1 != T; t1 = t1->down) { - if(t1->etype == TVOID) - break; - if(t1 != t->down) - Bprint(&outbuf, ", "); - Bprint(&outbuf, "%c ", n++); - printtypename(t1); - } - Bprint(&outbuf, ")"); - if(t->link && t->link->etype != TVOID) { - Bprint(&outbuf, " "); - printtypename(t->link); - } - Bprint(&outbuf, "\n"); - break; - - default: - switch(s->class) { - case CTYPEDEF: - if(!typesu[t->etype]) { - Bprint(&outbuf, "// type %U\t", s->name); - printtypename(t); - Bprint(&outbuf, "\n"); - } - break; - case CSTATIC: - case CEXTERN: - case CGLOBL: - if(strchr(s->name, '$') != nil) - break; - if(strncmp(s->name, "go.weak.", 8) == 0) - break; - Bprint(&outbuf, "var %U\t", s->name); - printtypename(t); - Bprint(&outbuf, "\n"); - break; - } - break; - } -} diff --git a/src/cmd/cc/lex.c b/src/cmd/cc/lex.c deleted file mode 100644 index 7c9f718c0..000000000 --- a/src/cmd/cc/lex.c +++ /dev/null @@ -1,1593 +0,0 @@ -// Inferno utils/cc/lex.c -// http://code.google.com/p/inferno-os/source/browse/utils/cc/lex.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <u.h> -#include "cc.h" -#include "y.tab.h" -#include "../ld/textflag.h" - -#ifndef CPP -#define CPP "cpp" -#endif - -int -systemtype(int sys) -{ -#ifdef _WIN32 - return sys&Windows; -#else - return sys&Plan9; -#endif -} - -int -pathchar(void) -{ - return '/'; -} - -/* - * known debug flags - * -a acid declaration output - * -A !B - * -B non ANSI - * -d print declarations - * -D name define - * -F format specification check - * -G print pgen stuff - * -g print cgen trees - * -i print initialization - * -I path include - * -l generate little-endian code - * -L print every NAME symbol - * -M constant multiplication - * -m print add/sub/mul trees - * -n print acid or godefs to file (%.c=%.acid) (with -a or -aa) - * -o file output file - * -p use standard cpp ANSI preprocessor (not on windows) - * -p something with peepholes - * -q print equivalent Go code for variables and types (lower-case identifiers) - * -Q print equivalent Go code for variables and types (upper-case identifiers) - * -r print registerization - * -s print structure offsets (with -a or -aa) - * -S print assembly - * -t print type trees - * -V enable void* conversion warnings - * -v verbose printing - * -w print warnings - * -X abort on error - * -. Inhibit search for includes in source directory - */ - -void -usage(void) -{ - print("usage: %cc [options] file.c...\n", thechar); - flagprint(1); - errorexit(); -} - -void -dospim(void) -{ - thechar = '0'; - thestring = "spim"; -} - -char **defs; -int ndef; - -void -dodef(char *p) -{ - if(ndef%8 == 0) - defs = allocn(defs, ndef*sizeof(char *), - 8*sizeof(char *)); - defs[ndef++] = p; - dodefine(p); -} - -void -main(int argc, char *argv[]) -{ - int c; - char *p; - - // Allow GOARCH=thestring or GOARCH=thestringsuffix, - // but not other values. - p = getgoarch(); - if(strncmp(p, thestring, strlen(thestring)) != 0) - sysfatal("cannot use %cc with GOARCH=%s", thechar, p); - if(strcmp(p, "amd64p32") == 0) // must be before cinit - ewidth[TIND] = 4; - - nacl = strcmp(getgoos(), "nacl") == 0; - if(nacl) - flag_largemodel = 1; - - quotefmtinstall(); // before cinit, which overrides %Q - - linkarchinit(); - ctxt = linknew(thelinkarch); - ctxt->diag = yyerror; - ctxt->bso = &bstdout; - Binit(&bstdout, 1, OWRITE); - - ensuresymb(NSYMB); - memset(debug, 0, sizeof(debug)); - tinit(); - cinit(); - ginit(); - arginit(); - - fmtstrinit(&pragcgobuf); - - tufield = simplet((1L<<tfield->etype) | BUNSIGNED); - ndef = 0; - defs = nil; - outfile = 0; - setinclude("."); - - flagcount("+", "pass -+ to preprocessor", &debug['+']); - flagcount(".", "pass -. to preprocessor", &debug['.']); - flagcount("<", "debug shift", &debug['<']); - flagcount("A", "debug alignment", &debug['A']); - flagcount("B", "allow pre-ANSI code", &debug['B']); - if(thechar == '5') - flagcount("C", "debug constant propagation", &debug['C']); - flagfn1("D", "name[=value]: add #define", dodef); - flagcount("F", "enable print format checks", &debug['F']); - if(thechar == '5') - flagcount("H", "debug shift propagation", &debug['H']); - flagfn1("I", "dir: add dir to include path", setinclude); - flagcount("L", "debug lexer", &debug['L']); - flagcount("M", "debug move generation", &debug['M']); - flagcount("N", "disable optimizations", &debug['N']); - flagcount("P", "debug peephole optimizer", &debug['P']); - flagcount("Q", "print exported Go definitions", &debug['Q']); - flagcount("R", "debug register optimizer", &debug['R']); - flagcount("S", "print assembly", &debug['S']); - flagcount("T", "enable type signatures", &debug['T']); - flagcount("V", "enable pointer type checks", &debug['V']); - flagcount("W", "debug switch generation", &debug['W']); - flagcount("X", "abort on error", &debug['X']); - flagcount("Y", "debug index generation", &debug['Y']); - flagcount("Z", "skip code generation", &debug['Z']); - flagcount("a", "print acid definitions", &debug['a']); - flagcount("c", "debug constant evaluation", &debug['c']); - flagcount("d", "debug declarations", &debug['d']); - flagcount("e", "debug macro expansion", &debug['e']); - flagcount("f", "debug pragmas", &debug['f']); - flagcount("g", "debug code generation", &debug['g']); - flagcount("i", "debug initialization", &debug['i']); - if(thechar == 'v') - flagfn0("l", "little-endian mips mode", dospim); - flagcount("m", "debug multiplication", &debug['m']); - flagcount("n", "print acid/Go to file, not stdout", &debug['n']); - flagstr("o", "file: set output file", &outfile); - flagcount("p", "invoke C preprocessor", &debug['p']); - flagcount("q", "print Go definitions", &debug['q']); - flagcount("s", "print #define assembly offsets", &debug['s']); - flagcount("t", "debug code generation", &debug['t']); - flagstr("trimpath", "prefix: remove prefix from recorded source file paths", &ctxt->trimpath); - flagcount("w", "enable warnings", &debug['w']); - flagcount("v", "increase debug verbosity", &debug['v']); - if(thechar == '6') - flagcount("largemodel", "generate code that assumes a large memory model", &flag_largemodel); - - flagparse(&argc, &argv, usage); - ctxt->debugasm = debug['S']; - ctxt->debugvlog = debug['v']; - - if(argc < 1 && outfile == 0) - usage(); - - if(argc > 1){ - print("can't compile multiple files\n"); - errorexit(); - } - - if(argc == 0) - c = compile("stdin", defs, ndef); - else - c = compile(argv[0], defs, ndef); - - Bflush(&bstdout); - if(c) - errorexit(); - exits(0); -} - -int -compile(char *file, char **defs, int ndef) -{ - char *ofile; - char *p, **av, opt[256]; - int i, c, fd[2]; - static int first = 1; - - ofile = alloc(strlen(file)+10); - strcpy(ofile, file); - p = utfrrune(ofile, pathchar()); - if(p) { - *p++ = 0; - if(!debug['.']) - include[0] = strdup(ofile); - } else - p = ofile; - - if(outfile == 0) { - outfile = p; - if(outfile) { - if(p = utfrrune(outfile, '.')) - if(p[1] == 'c' && p[2] == 0) - p[0] = 0; - p = utfrune(outfile, 0); - if(debug['a'] && debug['n']) - strcat(p, ".acid"); - else if((debug['q'] || debug['Q']) && debug['n']) - strcat(p, ".go"); - else { - p[0] = '.'; - p[1] = thechar; - p[2] = 0; - } - } else - outfile = "/dev/null"; - } - - if (first) - Binit(&diagbuf, 1, OWRITE); - /* - * if we're writing acid to standard output, don't keep scratching - * outbuf. - */ - if((debug['a'] || debug['q'] || debug['Q']) && !debug['n']) { - if (first) { - outfile = 0; - Binit(&outbuf, dup(1, -1), OWRITE); - dup(2, 1); - } - } else { - c = create(outfile, OWRITE, 0664); - if(c < 0) { - diag(Z, "cannot open %s - %r", outfile); - outfile = 0; - errorexit(); - } - Binit(&outbuf, c, OWRITE); - outfile = strdup(outfile); - } - newio(); - first = 0; - - /* Use an ANSI preprocessor */ - if(debug['p']) { - if(systemtype(Windows)) { - diag(Z, "-p option not supported on windows"); - errorexit(); - } - if(access(file, AREAD) < 0) { - diag(Z, "%s does not exist", file); - errorexit(); - } - if(pipe(fd) < 0) { - diag(Z, "pipe failed"); - errorexit(); - } - switch(fork()) { - case -1: - diag(Z, "fork failed"); - errorexit(); - case 0: - close(fd[0]); - dup(fd[1], 1); - close(fd[1]); - av = alloc((ndef+ninclude+5)*sizeof(char *)); - av[0] = CPP; - i = 1; - if(debug['.']){ - sprint(opt, "-."); - av[i++] = strdup(opt); - } - if(debug['+']) { - sprint(opt, "-+"); - av[i++] = strdup(opt); - } - for(c = 0; c < ndef; c++) - av[i++] = smprint("-D%s", defs[c]); - for(c = 0; c < ninclude; c++) - av[i++] = smprint("-I%s", include[c]); - if(strcmp(file, "stdin") != 0) - av[i++] = file; - av[i] = 0; - if(debug['p'] > 1) { - for(c = 0; c < i; c++) - fprint(2, "%s ", av[c]); - fprint(2, "\n"); - } - exec(av[0], av); - fprint(2, "can't exec C preprocessor %s: %r\n", CPP); - errorexit(); - default: - close(fd[1]); - newfile(file, fd[0]); - break; - } - } else { - if(strcmp(file, "stdin") == 0) - newfile(file, 0); - else - newfile(file, -1); - } - yyparse(); - if(!debug['a'] && !debug['q'] && !debug['Q']) - gclean(); - return nerrors; -} - -void -errorexit(void) -{ - Bflush(&bstdout); - if(outfile) - remove(outfile); - exits("error"); -} - -void -pushio(void) -{ - Io *i; - - i = iostack; - if(i == I) { - yyerror("botch in pushio"); - errorexit(); - } - i->p = fi.p; - i->c = fi.c; -} - -void -newio(void) -{ - Io *i; - static int pushdepth = 0; - - i = iofree; - if(i == I) { - pushdepth++; - if(pushdepth > 1000) { - yyerror("macro/io expansion too deep"); - errorexit(); - } - i = alloc(sizeof(*i)); - } else - iofree = i->link; - i->c = 0; - i->f = -1; - ionext = i; -} - -void -newfile(char *s, int f) -{ - Io *i; - - if(debug['e']) - print("%L: %s\n", lineno, s); - - i = ionext; - i->link = iostack; - iostack = i; - i->f = f; - if(f < 0) - i->f = open(s, 0); - if(i->f < 0) { - yyerror("%cc: %r: %s", thechar, s); - errorexit(); - } - fi.c = 0; - linklinehist(ctxt, lineno, s, 0); -} - -Sym* -slookup(char *s) -{ - ensuresymb(strlen(s)); - strcpy(symb, s); - return lookup(); -} - -Sym* -lookup(void) -{ - Sym *s; - uint32 h; - char *p; - int c, n; - char *r, *w; - - if((uchar)symb[0] == 0xc2 && (uchar)symb[1] == 0xb7) { - // turn leading · into ""· - h = strlen(symb); - ensuresymb(h+2); - memmove(symb+2, symb, h+1); - symb[0] = '"'; - symb[1] = '"'; - } - - for(r=w=symb; *r; r++) { - // turn · (U+00B7) into . - // turn ∕ (U+2215) into / - if((uchar)*r == 0xc2 && (uchar)*(r+1) == 0xb7) { - *w++ = '.'; - r++; - }else if((uchar)*r == 0xe2 && (uchar)*(r+1) == 0x88 && (uchar)*(r+2) == 0x95) { - *w++ = '/'; - r++; - r++; - }else - *w++ = *r; - } - *w = '\0'; - - h = 0; - for(p=symb; *p;) { - h = h * 3; - h += *p++; - } - n = (p - symb) + 1; - h &= 0xffffff; - h %= NHASH; - c = symb[0]; - for(s = hash[h]; s != S; s = s->link) { - if(s->name[0] != c) - continue; - if(strcmp(s->name, symb) == 0) - return s; - } - s = alloc(sizeof(*s)); - s->name = alloc(n); - memmove(s->name, symb, n); - s->link = hash[h]; - hash[h] = s; - syminit(s); - - return s; -} - -void -syminit(Sym *s) -{ - s->lexical = LNAME; - s->block = 0; - s->offset = 0; - s->type = T; - s->suetag = T; - s->class = CXXX; - s->aused = 0; - s->sig = SIGNONE; -} - -#define EOF (-1) -#define IGN (-2) -#define ESC (1<<20) -#define GETC() ((--fi.c < 0)? filbuf(): (*fi.p++ & 0xff)) - -enum -{ - Numdec = 1<<0, - Numlong = 1<<1, - Numuns = 1<<2, - Numvlong = 1<<3, - Numflt = 1<<4, -}; - -int32 -yylex(void) -{ - vlong vv; - int32 c, c1, t; - char *cp; - Rune rune; - Sym *s; - - if(peekc != IGN) { - c = peekc; - peekc = IGN; - goto l1; - } -l0: - c = GETC(); - -l1: - if(c >= Runeself) { - /* - * extension -- - * all multibyte runes are alpha - */ - cp = symb; - goto talph; - } - if(isspace(c)) { - if(c == '\n') - lineno++; - goto l0; - } - if(isalpha(c)) { - cp = symb; - if(c != 'L') - goto talph; - *cp++ = c; - c = GETC(); - if(c == '\'') { - /* L'x' */ - c = escchar('\'', 1, 0); - if(c == EOF) - c = '\''; - c1 = escchar('\'', 1, 0); - if(c1 != EOF) { - yyerror("missing '"); - peekc = c1; - } - yylval.vval = convvtox(c, TRUNE); - return LUCONST; - } - if(c == '"') { - goto caselq; - } - goto talph; - } - if(isdigit(c)) - goto tnum; - switch(c) - { - - case EOF: - peekc = EOF; - return -1; - - case '_': - cp = symb; - goto talph; - - case '#': - domacro(); - goto l0; - - case '.': - c1 = GETC(); - if(isdigit(c1)) { - cp = symb; - *cp++ = c; - c = c1; - c1 = 0; - goto casedot; - } - break; - - case '"': - strcpy(symb, "\"<string>\""); - cp = alloc(0); - c1 = 0; - - /* "..." */ - for(;;) { - c = escchar('"', 0, 1); - if(c == EOF) - break; - if(c & ESC) { - cp = allocn(cp, c1, 1); - cp[c1++] = c; - } else { - rune = c; - c = runelen(rune); - cp = allocn(cp, c1, c); - runetochar(cp+c1, &rune); - c1 += c; - } - } - yylval.sval.l = c1; - do { - cp = allocn(cp, c1, 1); - cp[c1++] = 0; - } while(c1 & MAXALIGN); - yylval.sval.s = cp; - return LSTRING; - - caselq: - /* L"..." */ - strcpy(symb, "\"L<string>\""); - cp = alloc(0); - c1 = 0; - for(;;) { - c = escchar('"', 1, 0); - if(c == EOF) - break; - cp = allocn(cp, c1, sizeof(TRune)); - *(TRune*)(cp + c1) = c; - c1 += sizeof(TRune); - } - yylval.sval.l = c1; - do { - cp = allocn(cp, c1, sizeof(TRune)); - *(TRune*)(cp + c1) = 0; - c1 += sizeof(TRune); - } while(c1 & MAXALIGN); - yylval.sval.s = cp; - return LLSTRING; - - case '\'': - /* '.' */ - c = escchar('\'', 0, 0); - if(c == EOF) - c = '\''; - c1 = escchar('\'', 0, 0); - if(c1 != EOF) { - yyerror("missing '"); - peekc = c1; - } - vv = c; - yylval.vval = convvtox(vv, TUCHAR); - if(yylval.vval != vv) - yyerror("overflow in character constant: 0x%x", c); - else - if(c & 0x80){ - nearln = lineno; - warn(Z, "sign-extended character constant"); - } - yylval.vval = convvtox(vv, TCHAR); - return LCONST; - - case '/': - c1 = GETC(); - if(c1 == '*') { - for(;;) { - c = getr(); - while(c == '*') { - c = getr(); - if(c == '/') - goto l0; - } - if(c == EOF) { - yyerror("eof in comment"); - errorexit(); - } - } - } - if(c1 == '/') { - for(;;) { - c = getr(); - if(c == '\n') - goto l0; - if(c == EOF) { - yyerror("eof in comment"); - errorexit(); - } - } - } - if(c1 == '=') - return LDVE; - break; - - case '*': - c1 = GETC(); - if(c1 == '=') - return LMLE; - break; - - case '%': - c1 = GETC(); - if(c1 == '=') - return LMDE; - break; - - case '+': - c1 = GETC(); - if(c1 == '+') - return LPP; - if(c1 == '=') - return LPE; - break; - - case '-': - c1 = GETC(); - if(c1 == '-') - return LMM; - if(c1 == '=') - return LME; - if(c1 == '>') - return LMG; - break; - - case '>': - c1 = GETC(); - if(c1 == '>') { - c = LRSH; - c1 = GETC(); - if(c1 == '=') - return LRSHE; - break; - } - if(c1 == '=') - return LGE; - break; - - case '<': - c1 = GETC(); - if(c1 == '<') { - c = LLSH; - c1 = GETC(); - if(c1 == '=') - return LLSHE; - break; - } - if(c1 == '=') - return LLE; - break; - - case '=': - c1 = GETC(); - if(c1 == '=') - return LEQ; - break; - - case '!': - c1 = GETC(); - if(c1 == '=') - return LNE; - break; - - case '&': - c1 = GETC(); - if(c1 == '&') - return LANDAND; - if(c1 == '=') - return LANDE; - break; - - case '|': - c1 = GETC(); - if(c1 == '|') - return LOROR; - if(c1 == '=') - return LORE; - break; - - case '^': - c1 = GETC(); - if(c1 == '=') - return LXORE; - break; - - default: - return c; - } - peekc = c1; - return c; - -talph: - /* - * cp is set to symb and some - * prefix has been stored - */ - for(;;) { - if(c >= Runeself) { - for(c1=0;;) { - cp[c1++] = c; - if(fullrune(cp, c1)) - break; - c = GETC(); - } - cp += c1; - c = GETC(); - continue; - } - if(!isalnum(c) && c != '_') - break; - *cp++ = c; - c = GETC(); - } - *cp = 0; - if(debug['L']) - print("%L: %s\n", lineno, symb); - peekc = c; - s = lookup(); - if(s->macro) { - newio(); - cp = ionext->b; - macexpand(s, cp); - pushio(); - ionext->link = iostack; - iostack = ionext; - fi.p = cp; - fi.c = strlen(cp); - if(peekc != IGN) { - cp[fi.c++] = peekc; - cp[fi.c] = 0; - peekc = IGN; - } - goto l0; - } - yylval.sym = s; - if(s->class == CTYPEDEF || s->class == CTYPESTR) - return LTYPE; - return s->lexical; - -tnum: - c1 = 0; - cp = symb; - if(c != '0') { - c1 |= Numdec; - for(;;) { - *cp++ = c; - c = GETC(); - if(isdigit(c)) - continue; - goto dc; - } - } - *cp++ = c; - c = GETC(); - if(c == 'x' || c == 'X') - for(;;) { - *cp++ = c; - c = GETC(); - if(isdigit(c)) - continue; - if(c >= 'a' && c <= 'f') - continue; - if(c >= 'A' && c <= 'F') - continue; - if(cp == symb+2) - yyerror("malformed hex constant"); - goto ncu; - } - if(c < '0' || c > '7') - goto dc; - for(;;) { - if(c >= '0' && c <= '7') { - *cp++ = c; - c = GETC(); - continue; - } - goto ncu; - } - -dc: - if(c == '.') - goto casedot; - if(c == 'e' || c == 'E') - goto casee; - -ncu: - if((c == 'U' || c == 'u') && !(c1 & Numuns)) { - c = GETC(); - c1 |= Numuns; - goto ncu; - } - if((c == 'L' || c == 'l') && !(c1 & Numvlong)) { - c = GETC(); - if(c1 & Numlong) - c1 |= Numvlong; - c1 |= Numlong; - goto ncu; - } - *cp = 0; - peekc = c; - if(mpatov(symb, &yylval.vval)) - yyerror("overflow in constant"); - - vv = yylval.vval; - if(c1 & Numvlong) { - if((c1 & Numuns) || convvtox(vv, TVLONG) < 0) { - c = LUVLCONST; - t = TUVLONG; - goto nret; - } - c = LVLCONST; - t = TVLONG; - goto nret; - } - if(c1 & Numlong) { - if((c1 & Numuns) || convvtox(vv, TLONG) < 0) { - c = LULCONST; - t = TULONG; - goto nret; - } - c = LLCONST; - t = TLONG; - goto nret; - } - if((c1 & Numuns) || convvtox(vv, TINT) < 0) { - c = LUCONST; - t = TUINT; - goto nret; - } - c = LCONST; - t = TINT; - goto nret; - -nret: - yylval.vval = convvtox(vv, t); - if(yylval.vval != vv){ - nearln = lineno; - warn(Z, "truncated constant: %T %s", types[t], symb); - } - return c; - -casedot: - for(;;) { - *cp++ = c; - c = GETC(); - if(!isdigit(c)) - break; - } - if(c != 'e' && c != 'E') - goto caseout; - -casee: - *cp++ = 'e'; - c = GETC(); - if(c == '+' || c == '-') { - *cp++ = c; - c = GETC(); - } - if(!isdigit(c)) - yyerror("malformed fp constant exponent"); - while(isdigit(c)) { - *cp++ = c; - c = GETC(); - } - -caseout: - if(c == 'L' || c == 'l') { - c = GETC(); - c1 |= Numlong; - } else - if(c == 'F' || c == 'f') { - c = GETC(); - c1 |= Numflt; - } - *cp = 0; - peekc = c; - yylval.dval = strtod(symb, nil); - if(isInf(yylval.dval, 1) || isInf(yylval.dval, -1)) { - yyerror("overflow in float constant"); - yylval.dval = 0; - } - if(c1 & Numflt) - return LFCONST; - return LDCONST; -} - -/* - * convert a string, s, to vlong in *v - * return conversion overflow. - * required syntax is [0[x]]d* - */ -int -mpatov(char *s, vlong *v) -{ - vlong n, nn; - int c; - - n = 0; - c = *s; - if(c == '0') - goto oct; - while(c = *s++) { - if(c >= '0' && c <= '9') - nn = n*10 + c-'0'; - else - goto bad; - if(n < 0 && nn >= 0) - goto bad; - n = nn; - } - goto out; - -oct: - s++; - c = *s; - if(c == 'x' || c == 'X') - goto hex; - while(c = *s++) { - if(c >= '0' || c <= '7') - nn = n*8 + c-'0'; - else - goto bad; - if(n < 0 && nn >= 0) - goto bad; - n = nn; - } - goto out; - -hex: - s++; - while(c = *s++) { - if(c >= '0' && c <= '9') - c += 0-'0'; - else - if(c >= 'a' && c <= 'f') - c += 10-'a'; - else - if(c >= 'A' && c <= 'F') - c += 10-'A'; - else - goto bad; - nn = (uvlong)n*16 + c; - if(n < 0 && nn >= 0) - goto bad; - n = nn; - } -out: - *v = n; - return 0; - -bad: - *v = ~0; - return 1; -} - -int -getc(void) -{ - int c; - - if(peekc != IGN) { - c = peekc; - peekc = IGN; - } else - c = GETC(); - if(c == '\n') - lineno++; - if(c == EOF) { - yyerror("End of file"); - errorexit(); - } - return c; -} - -int32 -getr(void) -{ - int c, i; - char str[UTFmax+1]; - Rune rune; - - - c = getc(); - if(c < Runeself) - return c; - i = 0; - str[i++] = c; - -loop: - c = getc(); - str[i++] = c; - if(!fullrune(str, i)) - goto loop; - c = chartorune(&rune, str); - if(rune == Runeerror && c == 1) { - nearln = lineno; - diag(Z, "illegal rune in string"); - for(c=0; c<i; c++) - print(" %.2x", *(uchar*)(str+c)); - print("\n"); - } - return rune; -} - -int -getnsc(void) -{ - int c; - - if(peekc != IGN) { - c = peekc; - peekc = IGN; - } else - c = GETC(); - for(;;) { - if(c >= Runeself || !isspace(c)) - return c; - if(c == '\n') { - lineno++; - return c; - } - c = GETC(); - } -} - -void -unget(int c) -{ - - peekc = c; - if(c == '\n') - lineno--; -} - -int32 -escchar(int32 e, int longflg, int escflg) -{ - int32 c, l; - int i; - -loop: - c = getr(); - if(c == '\n') { - yyerror("newline in string"); - return EOF; - } - if(c != '\\') { - if(c == e) - c = EOF; - return c; - } - c = getr(); - if(c == 'x') { - /* - * note this is not ansi, - * supposed to only accept 2 hex - */ - i = 2; - if(longflg) - i = 6; - l = 0; - for(; i>0; i--) { - c = getc(); - if(c >= '0' && c <= '9') { - l = l*16 + c-'0'; - continue; - } - if(c >= 'a' && c <= 'f') { - l = l*16 + c-'a' + 10; - continue; - } - if(c >= 'A' && c <= 'F') { - l = l*16 + c-'A' + 10; - continue; - } - unget(c); - break; - } - if(escflg) - l |= ESC; - return l; - } - if(c >= '0' && c <= '7') { - /* - * note this is not ansi, - * supposed to only accept 3 oct - */ - i = 2; - if(longflg) - i = 8; - l = c - '0'; - for(; i>0; i--) { - c = getc(); - if(c >= '0' && c <= '7') { - l = l*8 + c-'0'; - continue; - } - unget(c); - } - if(escflg) - l |= ESC; - return l; - } - switch(c) - { - case '\n': goto loop; - case 'n': return '\n'; - case 't': return '\t'; - case 'b': return '\b'; - case 'r': return '\r'; - case 'f': return '\f'; - case 'a': return '\a'; - case 'v': return '\v'; - } - return c; -} - -struct -{ - char *name; - ushort lexical; - ushort type; -} itab[] = -{ - "auto", LAUTO, 0, - "break", LBREAK, 0, - "case", LCASE, 0, - "char", LCHAR, TCHAR, - "const", LCONSTNT, 0, - "continue", LCONTINUE, 0, - "default", LDEFAULT, 0, - "do", LDO, 0, - "double", LDOUBLE, TDOUBLE, - "else", LELSE, 0, - "enum", LENUM, 0, - "extern", LEXTERN, 0, - "float", LFLOAT, TFLOAT, - "for", LFOR, 0, - "goto", LGOTO, 0, - "if", LIF, 0, - "inline", LINLINE, 0, - "int", LINT, TINT, - "long", LLONG, TLONG, - "PREFETCH", LPREFETCH, 0, - "register", LREGISTER, 0, - "restrict", LRESTRICT, 0, - "return", LRETURN, 0, - "SET", LSET, 0, - "short", LSHORT, TSHORT, - "signed", LSIGNED, 0, - "signof", LSIGNOF, 0, - "sizeof", LSIZEOF, 0, - "static", LSTATIC, 0, - "struct", LSTRUCT, 0, - "switch", LSWITCH, 0, - "typedef", LTYPEDEF, 0, - "typestr", LTYPESTR, 0, - "union", LUNION, 0, - "unsigned", LUNSIGNED, 0, - "USED", LUSED, 0, - "void", LVOID, TVOID, - "volatile", LVOLATILE, 0, - "while", LWHILE, 0, - 0 -}; - -void -cinit(void) -{ - Sym *s; - int i; - Type *t; - - nerrors = 0; - lineno = 1; - iostack = I; - iofree = I; - peekc = IGN; - nhunk = 0; - - types[TXXX] = T; - types[TCHAR] = typ(TCHAR, T); - types[TUCHAR] = typ(TUCHAR, T); - types[TSHORT] = typ(TSHORT, T); - types[TUSHORT] = typ(TUSHORT, T); - types[TINT] = typ(TINT, T); - types[TUINT] = typ(TUINT, T); - types[TLONG] = typ(TLONG, T); - types[TULONG] = typ(TULONG, T); - types[TVLONG] = typ(TVLONG, T); - types[TUVLONG] = typ(TUVLONG, T); - types[TFLOAT] = typ(TFLOAT, T); - types[TDOUBLE] = typ(TDOUBLE, T); - types[TVOID] = typ(TVOID, T); - types[TENUM] = typ(TENUM, T); - types[TFUNC] = typ(TFUNC, types[TINT]); - types[TIND] = typ(TIND, types[TVOID]); - - for(i=0; i<NHASH; i++) - hash[i] = S; - for(i=0; itab[i].name; i++) { - s = slookup(itab[i].name); - s->lexical = itab[i].lexical; - if(itab[i].type != 0) - s->type = types[itab[i].type]; - } - blockno = 0; - autobn = 0; - autoffset = 0; - - t = typ(TARRAY, types[TCHAR]); - t->width = 0; - symstring = slookup(".string"); - symstring->class = CSTATIC; - symstring->dataflag = NOPTR; - symstring->type = t; - - t = typ(TARRAY, types[TCHAR]); - t->width = 0; - - nodproto = new(OPROTO, Z, Z); - dclstack = D; - - fmtinstall('O', Oconv); - fmtinstall('T', Tconv); - fmtinstall('F', FNconv); - fmtinstall('L', Lconv); - fmtinstall('Q', Qconv); - fmtinstall('|', VBconv); - fmtinstall('U', Uconv); - fmtinstall('B', Bconv); -} - -int -filbuf(void) -{ - Io *i; - -loop: - i = iostack; - if(i == I) - return EOF; - if(i->f < 0) - goto pop; - fi.c = read(i->f, i->b, BUFSIZ) - 1; - if(fi.c < 0) { - close(i->f); - linklinehist(ctxt, lineno, nil, 0); - goto pop; - } - fi.p = i->b + 1; - return i->b[0] & 0xff; - -pop: - iostack = i->link; - i->link = iofree; - iofree = i; - i = iostack; - if(i == I) - return EOF; - fi.p = i->p; - fi.c = i->c; - if(--fi.c < 0) - goto loop; - return *fi.p++ & 0xff; -} - -int -Oconv(Fmt *fp) -{ - int a; - - a = va_arg(fp->args, int); - if(a < OXXX || a > OEND) - return fmtprint(fp, "***badO %d***", a); - - return fmtstrcpy(fp, onames[a]); -} - -int -Lconv(Fmt *fp) -{ - return linklinefmt(ctxt, fp); -} - -int -Tconv(Fmt *fp) -{ - char str[STRINGSZ+20], s[STRINGSZ+20]; - Type *t, *t1; - int et; - int32 n; - - str[0] = 0; - for(t = va_arg(fp->args, Type*); t != T; t = t->link) { - et = t->etype; - if(str[0]) - strcat(str, " "); - if(t->garb&~GINCOMPLETE) { - sprint(s, "%s ", gnames[t->garb&~GINCOMPLETE]); - if(strlen(str) + strlen(s) < STRINGSZ) - strcat(str, s); - } - sprint(s, "%s", tnames[et]); - if(strlen(str) + strlen(s) < STRINGSZ) - strcat(str, s); - if(et == TFUNC && (t1 = t->down)) { - sprint(s, "(%T", t1); - if(strlen(str) + strlen(s) < STRINGSZ) - strcat(str, s); - while(t1 = t1->down) { - sprint(s, ", %T", t1); - if(strlen(str) + strlen(s) < STRINGSZ) - strcat(str, s); - } - if(strlen(str) + strlen(s) < STRINGSZ) - strcat(str, ")"); - } - if(et == TARRAY) { - n = t->width; - if(t->link && t->link->width) - n /= t->link->width; - sprint(s, "[%d]", n); - if(strlen(str) + strlen(s) < STRINGSZ) - strcat(str, s); - } - if(t->nbits) { - sprint(s, " %d:%d", t->shift, t->nbits); - if(strlen(str) + strlen(s) < STRINGSZ) - strcat(str, s); - } - if(typesu[et]) { - if(t->tag) { - strcat(str, " "); - if(strlen(str) + strlen(t->tag->name) < STRINGSZ) - strcat(str, t->tag->name); - } else - strcat(str, " {}"); - break; - } - } - return fmtstrcpy(fp, str); -} - -int -FNconv(Fmt *fp) -{ - char *str; - Node *n; - - n = va_arg(fp->args, Node*); - str = "<indirect>"; - if(n != Z && (n->op == ONAME || n->op == ODOT || n->op == OELEM)) - str = n->sym->name; - return fmtstrcpy(fp, str); -} - -int -Qconv(Fmt *fp) -{ - char str[STRINGSZ+20], *s; - int32 b; - int i; - - str[0] = 0; - for(b = va_arg(fp->args, int32); b;) { - i = bitno(b); - if(str[0]) - strcat(str, " "); - s = qnames[i]; - if(strlen(str) + strlen(s) >= STRINGSZ) - break; - strcat(str, s); - b &= ~(1L << i); - } - return fmtstrcpy(fp, str); -} - -int -VBconv(Fmt *fp) -{ - char str[STRINGSZ]; - int i, n, t, pc; - - n = va_arg(fp->args, int); - pc = 0; /* BUG: was printcol */ - i = 0; - while(pc < n) { - t = (pc+4) & ~3; - if(t <= n) { - str[i++] = '\t'; - pc = t; - continue; - } - str[i++] = ' '; - pc++; - } - str[i] = 0; - - return fmtstrcpy(fp, str); -} - -int -Bconv(Fmt *fp) -{ - char str[STRINGSZ], ss[STRINGSZ], *s; - Bits bits; - int i; - - str[0] = 0; - bits = va_arg(fp->args, Bits); - while(bany(&bits)) { - i = bnum(bits); - if(str[0]) - strcat(str, " "); - if(var[i].sym == nil) { - sprint(ss, "$%lld", var[i].offset); - s = ss; - } else - s = var[i].sym->name; - if(strlen(str) + strlen(s) + 1 >= STRINGSZ) - break; - strcat(str, s); - bits.b[i/32] &= ~(1L << (i%32)); - } - return fmtstrcpy(fp, str); -} - -void -setinclude(char *p) -{ - int i; - - if(*p != 0) { - for(i=1; i < ninclude; i++) - if(strcmp(p, include[i]) == 0) - return; - - if(ninclude%8 == 0) - include = allocn(include, ninclude*sizeof(char *), - 8*sizeof(char *)); - include[ninclude++] = p; - } -} - -void* -alloc(int32 n) -{ - void *p; - - p = malloc(n); - if(p == nil) { - print("alloc out of mem\n"); - exits("alloc: out of mem"); - } - memset(p, 0, n); - return p; -} - -void* -allocn(void *p, int32 n, int32 d) -{ - if(p == nil) - return alloc(n+d); - p = realloc(p, n+d); - if(p == nil) { - print("allocn out of mem\n"); - exits("allocn: out of mem"); - } - if(d > 0) - memset((char*)p+n, 0, d); - return p; -} - -void -ensuresymb(int32 n) -{ - if(symb == nil) { - symb = alloc(NSYMB+1); - nsymb = NSYMB; - } - - if(n > nsymb) { - symb = allocn(symb, nsymb, n+1-nsymb); - nsymb = n; - } -} diff --git a/src/cmd/cc/mac.c b/src/cmd/cc/mac.c deleted file mode 100644 index b969662ae..000000000 --- a/src/cmd/cc/mac.c +++ /dev/null @@ -1,34 +0,0 @@ -// Inferno utils/cc/mac.c -// http://code.google.com/p/inferno-os/source/browse/utils/cc/mac.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <u.h> -#include "cc.h" - -#include "macbody" diff --git a/src/cmd/cc/omachcap.c b/src/cmd/cc/omachcap.c deleted file mode 100644 index f8fc1d88b..000000000 --- a/src/cmd/cc/omachcap.c +++ /dev/null @@ -1,40 +0,0 @@ -// Inferno utils/cc/machcap.c -// http://code.google.com/p/inferno-os/source/browse/utils/cc/machcap.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <u.h> -#include "cc.h" - -/* default, like old cc */ -int -machcap(Node *n) -{ - USED(n); - return 0; -} diff --git a/src/cmd/cc/pgen.c b/src/cmd/cc/pgen.c deleted file mode 100644 index 54cf0c5e1..000000000 --- a/src/cmd/cc/pgen.c +++ /dev/null @@ -1,622 +0,0 @@ -// Inferno utils/6c/sgen.c -// http://code.google.com/p/inferno-os/source/browse/utils/6c/sgen.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" -#include "../../runtime/funcdata.h" - -int -hasdotdotdot(Type *t) -{ - for(t=t->down; t!=T; t=t->down) - if(t->etype == TDOT) - return 1; - return 0; -} - -vlong -argsize(int doret) -{ - Type *t; - int32 s; - -//print("t=%T\n", thisfn); - s = 0; - if(hasdotdotdot(thisfn)) - s = align(s, thisfn->link, Aarg0, nil); - for(t=thisfn->down; t!=T; t=t->down) { - switch(t->etype) { - case TVOID: - break; - case TDOT: - if((textflag & NOSPLIT) == 0) - yyerror("function takes ... without textflag NOSPLIT"); - return ArgsSizeUnknown; - default: - s = align(s, t, Aarg1, nil); - s = align(s, t, Aarg2, nil); - break; - } -//print(" %d %T\n", s, t); - } - if(thechar == '6' || thechar == '9') - s = (s+7) & ~7; - else - s = (s+3) & ~3; - if(doret && thisfn->link->etype != TVOID) { - s = align(s, thisfn->link, Aarg1, nil); - s = align(s, thisfn->link, Aarg2, nil); - if(thechar == '6' || thechar == '9') - s = (s+7) & ~7; - else - s = (s+3) & ~3; - } - return s; -} - -void -codgen(Node *n, Node *nn) -{ - Prog *sp; - Node *n1, nod, nod1; - - cursafe = 0; - curarg = 0; - maxargsafe = 0; - - /* - * isolate name - */ - for(n1 = nn;; n1 = n1->left) { - if(n1 == Z) { - diag(nn, "can't find function name"); - return; - } - if(n1->op == ONAME) - break; - } - nearln = nn->lineno; - - p = gtext(n1->sym, stkoff); - p->from.sym->cfunc = 1; - sp = p; - - /* - * isolate first argument - */ - if(REGARG >= 0) { - if(typesuv[thisfn->link->etype]) { - nod1 = *nodret->left; - nodreg(&nod, &nod1, REGARG); - gmove(&nod, &nod1); - } else - if(firstarg && typechlp[firstargtype->etype]) { - nod1 = *nodret->left; - nod1.sym = firstarg; - nod1.type = firstargtype; - nod1.xoffset = align(0, firstargtype, Aarg1, nil); - nod1.etype = firstargtype->etype; - nodreg(&nod, &nod1, REGARG); - gmove(&nod, &nod1); - } - } - - canreach = 1; - warnreach = 1; - gen(n); - if(canreach && thisfn->link->etype != TVOID) - diag(Z, "no return at end of function: %s", n1->sym->name); - noretval(3); - gbranch(ORETURN); - - if(!debug['N'] || debug['R'] || debug['P']) - regopt(sp); - - if(thechar=='6' || thechar=='7') /* [sic] */ - maxargsafe = xround(maxargsafe, 8); - sp->to.offset += maxargsafe; -} - -void -supgen(Node *n) -{ - int owarn; - long spc; - Prog *sp; - - if(n == Z) - return; - suppress++; - owarn = warnreach; - warnreach = 0; - spc = pc; - sp = lastp; - gen(n); - lastp = sp; - pc = spc; - sp->link = nil; - suppress--; - warnreach = owarn; -} - -void -gen(Node *n) -{ - Node *l, nod, nod1; - Prog *sp, *spc, *spb; - Case *cn; - long sbc, scc; - int snbreak, sncontin; - int f, o, oldreach; - -loop: - if(n == Z) - return; - nearln = n->lineno; - o = n->op; - if(debug['G']) - if(o != OLIST) - print("%L %O\n", nearln, o); - - if(!canreach) { - switch(o) { - case OLABEL: - case OCASE: - case OLIST: - case OBREAK: - case OFOR: - case OWHILE: - case ODWHILE: - /* all handled specially - see switch body below */ - break; - default: - if(warnreach) { - warn(n, "unreachable code %O", o); - warnreach = 0; - } - } - } - - switch(o) { - - default: - complex(n); - cgen(n, Z); - break; - - case OLIST: - gen(n->left); - - rloop: - n = n->right; - goto loop; - - case ORETURN: - canreach = 0; - warnreach = !suppress; - complex(n); - if(n->type == T) - break; - l = n->left; - if(l == Z) { - noretval(3); - gbranch(ORETURN); - break; - } - if(typecmplx[n->type->etype] && !hasdotdotdot(thisfn)) { - regret(&nod, n, thisfn, 2); - sugen(l, &nod, n->type->width); - noretval(3); - gbranch(ORETURN); - break; - } - if(typecmplx[n->type->etype]) { - sugen(l, nodret, n->type->width); - noretval(3); - gbranch(ORETURN); - break; - } - regret(&nod1, n, thisfn, 2); - nod = nod1; - if(nod.op != OREGISTER) - regalloc(&nod, n, Z); - cgen(l, &nod); - if(nod1.op != OREGISTER) - gmove(&nod, &nod1); - regfree(&nod); - if(typefd[n->type->etype]) - noretval(1); - else - noretval(2); - gbranch(ORETURN); - break; - - case OLABEL: - canreach = 1; - l = n->left; - if(l) { - l->pc = pc; - if(l->label) - patch(l->label, pc); - } - gbranch(OGOTO); /* prevent self reference in reg */ - patch(p, pc); - goto rloop; - - case OGOTO: - canreach = 0; - warnreach = !suppress; - n = n->left; - if(n == Z) - return; - if(n->complex == 0) { - diag(Z, "label undefined: %s", n->sym->name); - return; - } - if(suppress) - return; - gbranch(OGOTO); - if(n->pc) { - patch(p, n->pc); - return; - } - if(n->label) - patch(n->label, pc-1); - n->label = p; - return; - - case OCASE: - canreach = 1; - l = n->left; - if(cases == C) - diag(n, "case/default outside a switch"); - if(l == Z) { - newcase(); - cases->val = 0; - cases->def = 1; - cases->label = pc; - cases->isv = 0; - goto rloop; - } - complex(l); - if(l->type == T) - goto rloop; - if(l->op == OCONST) - if(typeword[l->type->etype] && l->type->etype != TIND) { - newcase(); - cases->val = l->vconst; - cases->def = 0; - cases->label = pc; - cases->isv = typev[l->type->etype]; - goto rloop; - } - diag(n, "case expression must be integer constant"); - goto rloop; - - case OSWITCH: - l = n->left; - complex(l); - if(l->type == T) - break; - if(!typechlvp[l->type->etype] || l->type->etype == TIND) { - diag(n, "switch expression must be integer"); - break; - } - - gbranch(OGOTO); /* entry */ - sp = p; - - cn = cases; - cases = C; - newcase(); - - sbc = breakpc; - breakpc = pc; - snbreak = nbreak; - nbreak = 0; - gbranch(OGOTO); - spb = p; - - gen(n->right); /* body */ - if(canreach){ - gbranch(OGOTO); - patch(p, breakpc); - nbreak++; - } - - patch(sp, pc); - doswit(l); - patch(spb, pc); - - cases = cn; - breakpc = sbc; - canreach = nbreak!=0; - if(canreach == 0) - warnreach = !suppress; - nbreak = snbreak; - break; - - case OWHILE: - case ODWHILE: - l = n->left; - gbranch(OGOTO); /* entry */ - sp = p; - - scc = continpc; - continpc = pc; - gbranch(OGOTO); - spc = p; - - sbc = breakpc; - breakpc = pc; - snbreak = nbreak; - nbreak = 0; - gbranch(OGOTO); - spb = p; - - patch(spc, pc); - if(n->op == OWHILE) - patch(sp, pc); - bcomplex(l, Z); /* test */ - patch(p, breakpc); - if(l->op != OCONST || vconst(l) == 0) - nbreak++; - - if(n->op == ODWHILE) - patch(sp, pc); - gen(n->right); /* body */ - gbranch(OGOTO); - patch(p, continpc); - - patch(spb, pc); - continpc = scc; - breakpc = sbc; - canreach = nbreak!=0; - if(canreach == 0) - warnreach = !suppress; - nbreak = snbreak; - break; - - case OFOR: - l = n->left; - if(!canreach && l->right->left && warnreach) { - warn(n, "unreachable code FOR"); - warnreach = 0; - } - gen(l->right->left); /* init */ - gbranch(OGOTO); /* entry */ - sp = p; - - /* - * if there are no incoming labels in the - * body and the top's not reachable, warn - */ - if(!canreach && warnreach && deadheads(n)) { - warn(n, "unreachable code %O", o); - warnreach = 0; - } - - scc = continpc; - continpc = pc; - gbranch(OGOTO); - spc = p; - - sbc = breakpc; - breakpc = pc; - snbreak = nbreak; - nbreak = 0; - sncontin = ncontin; - ncontin = 0; - gbranch(OGOTO); - spb = p; - - patch(spc, pc); - gen(l->right->right); /* inc */ - patch(sp, pc); - if(l->left != Z) { /* test */ - bcomplex(l->left, Z); - patch(p, breakpc); - if(l->left->op != OCONST || vconst(l->left) == 0) - nbreak++; - } - canreach = 1; - gen(n->right); /* body */ - if(canreach){ - gbranch(OGOTO); - patch(p, continpc); - ncontin++; - } - if(!ncontin && l->right->right && warnreach) { - warn(l->right->right, "unreachable FOR inc"); - warnreach = 0; - } - - patch(spb, pc); - continpc = scc; - breakpc = sbc; - canreach = nbreak!=0; - if(canreach == 0) - warnreach = !suppress; - nbreak = snbreak; - ncontin = sncontin; - break; - - case OCONTINUE: - if(continpc < 0) { - diag(n, "continue not in a loop"); - break; - } - gbranch(OGOTO); - patch(p, continpc); - ncontin++; - canreach = 0; - warnreach = !suppress; - break; - - case OBREAK: - if(breakpc < 0) { - diag(n, "break not in a loop"); - break; - } - /* - * Don't complain about unreachable break statements. - * There are breaks hidden in yacc's output and some people - * write return; break; in their switch statements out of habit. - * However, don't confuse the analysis by inserting an - * unreachable reference to breakpc either. - */ - if(!canreach) - break; - gbranch(OGOTO); - patch(p, breakpc); - nbreak++; - canreach = 0; - warnreach = !suppress; - break; - - case OIF: - l = n->left; - if(bcomplex(l, n->right)) { - if(typefd[l->type->etype]) - f = !l->fconst; - else - f = !l->vconst; - if(debug['c']) - print("%L const if %s\n", nearln, f ? "false" : "true"); - if(f) { - canreach = 1; - supgen(n->right->left); - oldreach = canreach; - canreach = 1; - gen(n->right->right); - /* - * treat constant ifs as regular ifs for - * reachability warnings. - */ - if(!canreach && oldreach && debug['w'] < 2) - warnreach = 0; - } - else { - canreach = 1; - gen(n->right->left); - oldreach = canreach; - canreach = 1; - supgen(n->right->right); - /* - * treat constant ifs as regular ifs for - * reachability warnings. - */ - if(!oldreach && canreach && debug['w'] < 2) - warnreach = 0; - canreach = oldreach; - } - } - else { - sp = p; - canreach = 1; - if(n->right->left != Z) - gen(n->right->left); - oldreach = canreach; - canreach = 1; - if(n->right->right != Z) { - gbranch(OGOTO); - patch(sp, pc); - sp = p; - gen(n->right->right); - } - patch(sp, pc); - canreach = canreach || oldreach; - if(canreach == 0) - warnreach = !suppress; - } - break; - - case OSET: - case OUSED: - case OPREFETCH: - usedset(n->left, o); - break; - } -} - -void -usedset(Node *n, int o) -{ - if(n->op == OLIST) { - usedset(n->left, o); - usedset(n->right, o); - return; - } - complex(n); - if(o == OPREFETCH) { - gprefetch(n); - return; - } - switch(n->op) { - case OADDR: /* volatile */ - gins(ANOP, n, Z); - break; - case ONAME: - if(o == OSET) - gins(ANOP, Z, n); - else - gins(ANOP, n, Z); - break; - } -} - -int -bcomplex(Node *n, Node *c) -{ - Node *b, nod; - - complex(n); - if(n->type != T) - if(tcompat(n, T, n->type, tnot)) - n->type = T; - if(n->type == T) { - gbranch(OGOTO); - return 0; - } - if(c != Z && n->op == OCONST && deadheads(c)) - return 1; - if(typev[n->type->etype] && machcap(Z)) { - b = &nod; - b->op = ONE; - b->left = n; - b->right = new(0, Z, Z); - *b->right = *nodconst(0); - b->right->type = n->type; - b->type = types[TLONG]; - n = b; - } - bool64(n); - boolgen(n, 1, Z); - return 0; -} diff --git a/src/cmd/cc/pswt.c b/src/cmd/cc/pswt.c deleted file mode 100644 index bae57c64d..000000000 --- a/src/cmd/cc/pswt.c +++ /dev/null @@ -1,140 +0,0 @@ -// Inferno utils/6c/swt.c -// http://code.google.com/p/inferno-os/source/browse/utils/6c/swt.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include "gc.h" - -int -swcmp(const void *a1, const void *a2) -{ - C1 *p1, *p2; - - p1 = (C1*)a1; - p2 = (C1*)a2; - if(p1->val < p2->val) - return -1; - return p1->val > p2->val; -} - -void -doswit(Node *n) -{ - Case *c; - C1 *q, *iq; - int32 def, nc, i, isv; - - def = 0; - nc = 0; - isv = 0; - for(c = cases; c->link != C; c = c->link) { - if(c->def) { - if(def) - diag(n, "more than one default in switch"); - def = c->label; - continue; - } - isv |= c->isv; - nc++; - } - if(isv && !typev[n->type->etype]) - warn(n, "32-bit switch expression with 64-bit case constant"); - - iq = alloc(nc*sizeof(C1)); - q = iq; - for(c = cases; c->link != C; c = c->link) { - if(c->def) - continue; - q->label = c->label; - if(isv) - q->val = c->val; - else - q->val = (int32)c->val; /* cast ensures correct value for 32-bit switch on 64-bit architecture */ - q++; - } - qsort(iq, nc, sizeof(C1), swcmp); - if(debug['W']) - for(i=0; i<nc; i++) - print("case %2d: = %.8llux\n", i, (vlong)iq[i].val); - for(i=0; i<nc-1; i++) - if(iq[i].val == iq[i+1].val) - diag(n, "duplicate cases in switch %lld", (vlong)iq[i].val); - if(def == 0) { - def = breakpc; - nbreak++; - } - swit1(iq, nc, def, n); -} - -void -newcase(void) -{ - Case *c; - - c = alloc(sizeof(*c)); - c->link = cases; - cases = c; -} - -int32 -outlstring(TRune *s, int32 n) -{ - char buf[sizeof(TRune)]; - uint c; - int i; - int32 r; - - if(suppress) - return nstring; - while(nstring & (sizeof(TRune)-1)) - outstring("", 1); - r = nstring; - while(n > 0) { - c = *s++; - if(align(0, types[TCHAR], Aarg1, nil)) { - for(i = 0; i < sizeof(TRune); i++) - buf[i] = c>>(8*(sizeof(TRune) - i - 1)); - } else { - for(i = 0; i < sizeof(TRune); i++) - buf[i] = c>>(8*i); - } - outstring(buf, sizeof(TRune)); - n -= sizeof(TRune); - } - return r; -} - -void -nullwarn(Node *l, Node *r) -{ - warn(Z, "result of operation not used"); - if(l != Z) - cgen(l, Z); - if(r != Z) - cgen(r, Z); -} diff --git a/src/cmd/cc/scon.c b/src/cmd/cc/scon.c deleted file mode 100644 index b0b909759..000000000 --- a/src/cmd/cc/scon.c +++ /dev/null @@ -1,640 +0,0 @@ -// Inferno utils/cc/scon.c -// http://code.google.com/p/inferno-os/source/browse/utils/cc/scon.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <u.h> -#include "cc.h" - -static Node* -acast(Type *t, Node *n) -{ - if(n->type->etype != t->etype || n->op == OBIT) { - n = new1(OCAST, n, Z); - if(nocast(n->left->type, t)) - *n = *n->left; - n->type = t; - } - return n; -} - - -void -evconst(Node *n) -{ - Node *l, *r; - int et, isf; - vlong v; - double d; - - if(n == Z || n->type == T) - return; - - et = n->type->etype; - isf = typefd[et]; - - l = n->left; - r = n->right; - - d = 0; - v = 0; - - switch(n->op) { - default: - return; - - case ONEG: - if(isf) - d = -l->fconst; - else - v = -l->vconst; - break; - - case OCOM: - v = ~l->vconst; - break; - - case OCAST: - if(et == TVOID) - return; - et = l->type->etype; - if(isf) { - if(typefd[et]) - d = l->fconst; - else - d = l->vconst; - } else { - if(typefd[et]) - v = l->fconst; - else - v = convvtox(l->vconst, n->type->etype); - } - break; - - case OCONST: - break; - - case OADD: - if(isf) - d = l->fconst + r->fconst; - else { - v = l->vconst + r->vconst; - } - break; - - case OSUB: - if(isf) - d = l->fconst - r->fconst; - else - v = l->vconst - r->vconst; - break; - - case OMUL: - if(isf) - d = l->fconst * r->fconst; - else { - v = l->vconst * r->vconst; - } - break; - - case OLMUL: - v = (uvlong)l->vconst * (uvlong)r->vconst; - break; - - - case ODIV: - if(vconst(r) == 0) { - warn(n, "divide by zero"); - return; - } - if(isf) - d = l->fconst / r->fconst; - else - v = l->vconst / r->vconst; - break; - - case OLDIV: - if(vconst(r) == 0) { - warn(n, "divide by zero"); - return; - } - v = (uvlong)l->vconst / (uvlong)r->vconst; - break; - - case OMOD: - if(vconst(r) == 0) { - warn(n, "modulo by zero"); - return; - } - v = l->vconst % r->vconst; - break; - - case OLMOD: - if(vconst(r) == 0) { - warn(n, "modulo by zero"); - return; - } - v = (uvlong)l->vconst % (uvlong)r->vconst; - break; - - case OAND: - v = l->vconst & r->vconst; - break; - - case OOR: - v = l->vconst | r->vconst; - break; - - case OXOR: - v = l->vconst ^ r->vconst; - break; - - case OLSHR: - if(l->type->width != sizeof(uvlong)) - v = ((uvlong)l->vconst & 0xffffffffULL) >> r->vconst; - else - v = (uvlong)l->vconst >> r->vconst; - break; - - case OASHR: - v = l->vconst >> r->vconst; - break; - - case OASHL: - v = (uvlong)l->vconst << r->vconst; - break; - - case OLO: - v = (uvlong)l->vconst < (uvlong)r->vconst; - break; - - case OLT: - if(typefd[l->type->etype]) - v = l->fconst < r->fconst; - else - v = l->vconst < r->vconst; - break; - - case OHI: - v = (uvlong)l->vconst > (uvlong)r->vconst; - break; - - case OGT: - if(typefd[l->type->etype]) - v = l->fconst > r->fconst; - else - v = l->vconst > r->vconst; - break; - - case OLS: - v = (uvlong)l->vconst <= (uvlong)r->vconst; - break; - - case OLE: - if(typefd[l->type->etype]) - v = l->fconst <= r->fconst; - else - v = l->vconst <= r->vconst; - break; - - case OHS: - v = (uvlong)l->vconst >= (uvlong)r->vconst; - break; - - case OGE: - if(typefd[l->type->etype]) - v = l->fconst >= r->fconst; - else - v = l->vconst >= r->vconst; - break; - - case OEQ: - if(typefd[l->type->etype]) - v = l->fconst == r->fconst; - else - v = l->vconst == r->vconst; - break; - - case ONE: - if(typefd[l->type->etype]) - v = l->fconst != r->fconst; - else - v = l->vconst != r->vconst; - break; - - case ONOT: - if(typefd[l->type->etype]) - v = !l->fconst; - else - v = !l->vconst; - break; - - case OANDAND: - if(typefd[l->type->etype]) - v = l->fconst && r->fconst; - else - v = l->vconst && r->vconst; - break; - - case OOROR: - if(typefd[l->type->etype]) - v = l->fconst || r->fconst; - else - v = l->vconst || r->vconst; - break; - } - if(isf) { - n->fconst = d; - } else { - n->vconst = convvtox(v, n->type->etype); - } - n->oldop = n->op; - n->op = OCONST; -} - -void -acom(Node *n) -{ - Type *t; - Node *l, *r; - int i; - - switch(n->op) - { - - case ONAME: - case OCONST: - case OSTRING: - case OINDREG: - case OREGISTER: - return; - - case ONEG: - l = n->left; - if(addo(n) && addo(l)) - break; - acom(l); - return; - - case OADD: - case OSUB: - case OMUL: - l = n->left; - r = n->right; - if(addo(n)) { - if(addo(r)) - break; - if(addo(l)) - break; - } - acom(l); - acom(r); - return; - - default: - l = n->left; - r = n->right; - if(l != Z) - acom(l); - if(r != Z) - acom(r); - return; - } - - /* bust terms out */ - t = n->type; - term[0].mult = 0; - term[0].node = Z; - nterm = 1; - acom1(1, n); - if(debug['m']) - for(i=0; i<nterm; i++) { - print("%d %3lld ", i, term[i].mult); - prtree1(term[i].node, 1, 0); - } - if(nterm < NTERM) - acom2(n, t); - n->type = t; -} - -int -acomcmp1(const void *a1, const void *a2) -{ - vlong c1, c2; - Term *t1, *t2; - - t1 = (Term*)a1; - t2 = (Term*)a2; - c1 = t1->mult; - if(c1 < 0) - c1 = -c1; - c2 = t2->mult; - if(c2 < 0) - c2 = -c2; - if(c1 > c2) - return 1; - if(c1 < c2) - return -1; - c1 = 1; - if(t1->mult < 0) - c1 = 0; - c2 = 1; - if(t2->mult < 0) - c2 = 0; - if(c2 -= c1) - return c2; - if(t2 > t1) - return 1; - return -1; -} - -int -acomcmp2(const void *a1, const void *a2) -{ - vlong c1, c2; - Term *t1, *t2; - - t1 = (Term*)a1; - t2 = (Term*)a2; - c1 = t1->mult; - c2 = t2->mult; - if(c1 > c2) - return 1; - if(c1 < c2) - return -1; - if(t2 > t1) - return 1; - return -1; -} - -void -acom2(Node *n, Type *t) -{ - Node *l, *r; - Term trm[NTERM]; - int et, nt, i, j; - vlong c1, c2; - - /* - * copy into automatic - */ - c2 = 0; - nt = nterm; - for(i=0; i<nt; i++) - trm[i] = term[i]; - /* - * recur on subtrees - */ - j = 0; - for(i=1; i<nt; i++) { - c1 = trm[i].mult; - if(c1 == 0) - continue; - l = trm[i].node; - if(l != Z) { - j = 1; - acom(l); - } - } - c1 = trm[0].mult; - if(j == 0) { - n->oldop = n->op; - n->op = OCONST; - n->vconst = c1; - return; - } - et = t->etype; - - /* - * prepare constant term, - * combine it with an addressing term - */ - if(c1 != 0) { - l = new1(OCONST, Z, Z); - l->type = t; - l->vconst = c1; - trm[0].mult = 1; - for(i=1; i<nt; i++) { - if(trm[i].mult != 1) - continue; - r = trm[i].node; - if(r->op != OADDR) - continue; - r->type = t; - l = new1(OADD, r, l); - l->type = t; - trm[i].mult = 0; - break; - } - trm[0].node = l; - } - /* - * look for factorable terms - * c1*i + c1*c2*j -> c1*(i + c2*j) - */ - qsort(trm+1, nt-1, sizeof(trm[0]), acomcmp1); - for(i=nt-1; i>=0; i--) { - c1 = trm[i].mult; - if(c1 < 0) - c1 = -c1; - if(c1 <= 1) - continue; - for(j=i+1; j<nt; j++) { - c2 = trm[j].mult; - if(c2 < 0) - c2 = -c2; - if(c2 <= 1) - continue; - if(c2 % c1) - continue; - r = trm[j].node; - if(r->type->etype != et) - r = acast(t, r); - c2 = trm[j].mult/trm[i].mult; - if(c2 != 1 && c2 != -1) { - r = new1(OMUL, r, new(OCONST, Z, Z)); - r->type = t; - r->right->type = t; - r->right->vconst = c2; - } - l = trm[i].node; - if(l->type->etype != et) - l = acast(t, l); - r = new1(OADD, l, r); - r->type = t; - if(c2 == -1) - r->op = OSUB; - trm[i].node = r; - trm[j].mult = 0; - } - } - if(debug['m']) { - print("\n"); - for(i=0; i<nt; i++) { - print("%d %3lld ", i, trm[i].mult); - prtree1(trm[i].node, 1, 0); - } - } - - /* - * put it all back together - */ - qsort(trm+1, nt-1, sizeof(trm[0]), acomcmp2); - l = Z; - for(i=nt-1; i>=0; i--) { - c1 = trm[i].mult; - if(c1 == 0) - continue; - r = trm[i].node; - if(r->type->etype != et || r->op == OBIT) - r = acast(t, r); - if(c1 != 1 && c1 != -1) { - r = new1(OMUL, r, new(OCONST, Z, Z)); - r->type = t; - r->right->type = t; - if(c1 < 0) { - r->right->vconst = -c1; - c1 = -1; - } else { - r->right->vconst = c1; - c1 = 1; - } - } - if(l == Z) { - l = r; - c2 = c1; - continue; - } - if(c1 < 0) - if(c2 < 0) - l = new1(OADD, l, r); - else - l = new1(OSUB, l, r); - else - if(c2 < 0) { - l = new1(OSUB, r, l); - c2 = 1; - } else - l = new1(OADD, l, r); - l->type = t; - } - if(c2 < 0) { - r = new1(OCONST, 0, 0); - r->vconst = 0; - r->type = t; - l = new1(OSUB, r, l); - l->type = t; - } - *n = *l; -} - -void -acom1(vlong v, Node *n) -{ - Node *l, *r; - - if(v == 0 || nterm >= NTERM) - return; - if(!addo(n)) { - if(n->op == OCONST) - if(!typefd[n->type->etype]) { - term[0].mult += v*n->vconst; - return; - } - term[nterm].mult = v; - term[nterm].node = n; - nterm++; - return; - } - switch(n->op) { - - case OCAST: - acom1(v, n->left); - break; - - case ONEG: - acom1(-v, n->left); - break; - - case OADD: - acom1(v, n->left); - acom1(v, n->right); - break; - - case OSUB: - acom1(v, n->left); - acom1(-v, n->right); - break; - - case OMUL: - l = n->left; - r = n->right; - if(l->op == OCONST) - if(!typefd[n->type->etype]) { - acom1(v*l->vconst, r); - break; - } - if(r->op == OCONST) - if(!typefd[n->type->etype]) { - acom1(v*r->vconst, l); - break; - } - break; - - default: - diag(n, "not addo"); - } -} - -int -addo(Node *n) -{ - - if(n != Z) - if(!typefd[n->type->etype]) - if(!typev[n->type->etype] || ewidth[TVLONG] == ewidth[TIND]) - switch(n->op) { - - case OCAST: - if(nilcast(n->left->type, n->type)) - return 1; - break; - - case ONEG: - case OADD: - case OSUB: - return 1; - - case OMUL: - if(n->left->op == OCONST) - return 1; - if(n->right->op == OCONST) - return 1; - } - return 0; -} diff --git a/src/cmd/cc/sub.c b/src/cmd/cc/sub.c deleted file mode 100644 index 94c11d021..000000000 --- a/src/cmd/cc/sub.c +++ /dev/null @@ -1,2068 +0,0 @@ -// Inferno utils/cc/sub.c -// http://code.google.com/p/inferno-os/source/browse/utils/cc/sub.c -// -// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. -// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) -// Portions Copyright © 1997-1999 Vita Nuova Limited -// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) -// Portions Copyright © 2004,2006 Bruce Ellis -// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) -// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others -// Portions Copyright © 2009 The Go Authors. All rights reserved. -// -// Permission is hereby granted, free of charge, to any person obtaining a copy -// of this software and associated documentation files (the "Software"), to deal -// in the Software without restriction, including without limitation the rights -// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -// copies of the Software, and to permit persons to whom the Software is -// furnished to do so, subject to the following conditions: -// -// The above copyright notice and this permission notice shall be included in -// all copies or substantial portions of the Software. -// -// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -// THE SOFTWARE. - -#include <u.h> -#include "cc.h" - -Node* -new(int t, Node *l, Node *r) -{ - Node *n; - - n = alloc(sizeof(*n)); - n->op = t; - n->left = l; - n->right = r; - if(l && t != OGOTO) - n->lineno = l->lineno; - else if(r) - n->lineno = r->lineno; - else - n->lineno = lineno; - newflag = 1; - return n; -} - -Node* -new1(int o, Node *l, Node *r) -{ - Node *n; - - n = new(o, l, r); - n->lineno = nearln; - return n; -} - -void -prtree(Node *n, char *s) -{ - - print(" == %s ==\n", s); - prtree1(n, 0, 0); - print("\n"); -} - -void -prtree1(Node *n, int d, int f) -{ - int i; - - if(f) - for(i=0; i<d; i++) - print(" "); - if(n == Z) { - print("Z\n"); - return; - } - if(n->op == OLIST) { - prtree1(n->left, d, 0); - prtree1(n->right, d, 1); - return; - } - d++; - print("%O", n->op); - i = 3; - switch(n->op) - { - case ONAME: - print(" \"%F\"", n); - print(" %d", n->xoffset); - i = 0; - break; - - case OINDREG: - print(" %d(R%d)", n->xoffset, n->reg); - i = 0; - break; - - case OREGISTER: - if(n->xoffset) - print(" %d+R%d", n->xoffset, n->reg); - else - print(" R%d", n->reg); - i = 0; - break; - - case OSTRING: - print(" \"%s\"", n->cstring); - i = 0; - break; - - case OLSTRING: - if(sizeof(TRune) == sizeof(Rune)) - print(" \"%S\"", (Rune*)n->rstring); - else - print(" \"...\""); - i = 0; - break; - - case ODOT: - case OELEM: - print(" \"%F\"", n); - break; - - case OCONST: - if(typefd[n->type->etype]) - print(" \"%.8e\"", n->fconst); - else - print(" \"%lld\"", n->vconst); - i = 0; - break; - } - if(n->addable != 0) - print(" <%d>", n->addable); - if(n->type != T) - print(" %T", n->type); - if(n->complex != 0) - print(" (%d)", n->complex); - print(" %L\n", n->lineno); - if(i & 2) - prtree1(n->left, d, 1); - if(i & 1) - prtree1(n->right, d, 1); -} - -Type* -typ(int et, Type *d) -{ - Type *t; - - t = alloc(sizeof(*t)); - t->etype = et; - t->link = d; - t->down = T; - t->sym = S; - if(et < NTYPE) - t->width = ewidth[et]; - else - t->width = -1; // for TDOT or TOLD in prototype - t->offset = 0; - t->shift = 0; - t->nbits = 0; - t->garb = 0; - return t; -} - -Type* -copytyp(Type *t) -{ - Type *nt; - - nt = typ(TXXX, T); - *nt = *t; - return nt; -} - -Type* -garbt(Type *t, int32 b) -{ - Type *t1; - - if(b & BGARB) { - t1 = copytyp(t); - t1->garb = simpleg(b); - return t1; - } - return t; -} - -int -simpleg(int32 b) -{ - - b &= BGARB; - switch(b) { - case BCONSTNT: - return GCONSTNT; - case BVOLATILE: - return GVOLATILE; - case BVOLATILE|BCONSTNT: - return GCONSTNT|GVOLATILE; - } - return GXXX; -} - -int -simplec(int32 b) -{ - - b &= BCLASS; - switch(b) { - case 0: - case BREGISTER: - return CXXX; - case BAUTO: - case BAUTO|BREGISTER: - return CAUTO; - case BEXTERN: - return CEXTERN; - case BEXTERN|BREGISTER: - return CEXREG; - case BSTATIC: - return CSTATIC; - case BTYPEDEF: - return CTYPEDEF; - case BTYPESTR: - return CTYPESTR; - } - diag(Z, "illegal combination of classes %Q", b); - return CXXX; -} - -Type* -simplet(int32 b) -{ - - b &= ~BCLASS & ~BGARB; - switch(b) { - case BCHAR: - case BCHAR|BSIGNED: - return types[TCHAR]; - - case BCHAR|BUNSIGNED: - return types[TUCHAR]; - - case BSHORT: - case BSHORT|BINT: - case BSHORT|BSIGNED: - case BSHORT|BINT|BSIGNED: - return types[TSHORT]; - - case BUNSIGNED|BSHORT: - case BUNSIGNED|BSHORT|BINT: - return types[TUSHORT]; - - case 0: - case BINT: - case BINT|BSIGNED: - case BSIGNED: - return types[TINT]; - - case BUNSIGNED: - case BUNSIGNED|BINT: - return types[TUINT]; - - case BLONG: - case BLONG|BINT: - case BLONG|BSIGNED: - case BLONG|BINT|BSIGNED: - return types[TLONG]; - - case BUNSIGNED|BLONG: - case BUNSIGNED|BLONG|BINT: - return types[TULONG]; - - case BVLONG|BLONG: - case BVLONG|BLONG|BINT: - case BVLONG|BLONG|BSIGNED: - case BVLONG|BLONG|BINT|BSIGNED: - return types[TVLONG]; - - case BVLONG|BLONG|BUNSIGNED: - case BVLONG|BLONG|BINT|BUNSIGNED: - return types[TUVLONG]; - - case BFLOAT: - return types[TFLOAT]; - - case BDOUBLE: - case BDOUBLE|BLONG: - case BFLOAT|BLONG: - return types[TDOUBLE]; - - case BVOID: - return types[TVOID]; - } - - diag(Z, "illegal combination of types %Q", b); - return types[TINT]; -} - -int -stcompat(Node *n, Type *t1, Type *t2, int32 ttab[]) -{ - int i; - uint32 b; - - i = 0; - if(t2 != T) - i = t2->etype; - b = 1L << i; - i = 0; - if(t1 != T) - i = t1->etype; - if(b & ttab[i]) { - if(ttab == tasign) - if(b == BSTRUCT || b == BUNION) - if(!sametype(t1, t2)) - return 1; - if(n->op != OCAST) - if(b == BIND && i == TIND) - if(!sametype(t1, t2)) - return 1; - return 0; - } - return 1; -} - -int -tcompat(Node *n, Type *t1, Type *t2, int32 ttab[]) -{ - - if(stcompat(n, t1, t2, ttab)) { - if(t1 == T) - diag(n, "incompatible type: \"%T\" for op \"%O\"", - t2, n->op); - else - diag(n, "incompatible types: \"%T\" and \"%T\" for op \"%O\"", - t1, t2, n->op); - return 1; - } - return 0; -} - -void -makedot(Node *n, Type *t, int32 o) -{ - Node *n1, *n2; - - if(t->nbits) { - n1 = new(OXXX, Z, Z); - *n1 = *n; - n->op = OBIT; - n->left = n1; - n->right = Z; - n->type = t; - n->addable = n1->left->addable; - n = n1; - } - n->addable = n->left->addable; - if(n->addable == 0) { - n1 = new1(OCONST, Z, Z); - n1->vconst = o; - n1->type = types[TLONG]; - n->right = n1; - n->type = t; - return; - } - n->left->type = t; - if(o == 0) { - *n = *n->left; - return; - } - n->type = t; - n1 = new1(OCONST, Z, Z); - n1->vconst = o; - t = typ(TIND, t); - t->width = types[TIND]->width; - n1->type = t; - - n2 = new1(OADDR, n->left, Z); - n2->type = t; - - n1 = new1(OADD, n1, n2); - n1->type = t; - - n->op = OIND; - n->left = n1; - n->right = Z; -} - -Type* -dotsearch(Sym *s, Type *t, Node *n, int32 *off) -{ - Type *t1, *xt, *rt; - - xt = T; - - /* - * look it up by name - */ - for(t1 = t; t1 != T; t1 = t1->down) - if(t1->sym == s) { - if(xt != T) - goto ambig; - xt = t1; - } - - /* - * look it up by type - */ - if(s->class == CTYPEDEF || s->class == CTYPESTR) - for(t1 = t; t1 != T; t1 = t1->down) - if(t1->sym == S && typesu[t1->etype]) - if(sametype(s->type, t1)) { - if(xt != T) - goto ambig; - xt = t1; - } - if(xt != T) { - *off = xt->offset; - return xt; - } - - /* - * look it up in unnamed substructures - */ - for(t1 = t; t1 != T; t1 = t1->down) - if(t1->sym == S && typesu[t1->etype]){ - rt = dotsearch(s, t1->link, n, off); - if(rt != T) { - if(xt != T) - goto ambig; - xt = rt; - *off += t1->offset; - } - } - return xt; - -ambig: - diag(n, "ambiguous structure element: %s", s->name); - return xt; -} - -int32 -dotoffset(Type *st, Type *lt, Node *n) -{ - Type *t; - Sym *g; - int32 o, o1; - - o = -1; - /* - * first try matching at the top level - * for matching tag names - */ - g = st->tag; - if(g != S) - for(t=lt->link; t!=T; t=t->down) - if(t->sym == S) - if(g == t->tag) { - if(o >= 0) - goto ambig; - o = t->offset; - } - if(o >= 0) - return o; - - /* - * second try matching at the top level - * for similar types - */ - for(t=lt->link; t!=T; t=t->down) - if(t->sym == S) - if(sametype(st, t)) { - if(o >= 0) - goto ambig; - o = t->offset; - } - if(o >= 0) - return o; - - /* - * last try matching sub-levels - */ - for(t=lt->link; t!=T; t=t->down) - if(t->sym == S) - if(typesu[t->etype]) { - o1 = dotoffset(st, t, n); - if(o1 >= 0) { - if(o >= 0) - goto ambig; - o = o1 + t->offset; - } - } - return o; - -ambig: - diag(n, "ambiguous unnamed structure element"); - return o; -} - -/* - * look into tree for floating point constant expressions - */ -int -allfloat(Node *n, int flag) -{ - - if(n != Z) { - if(n->type->etype != TDOUBLE) - return 1; - switch(n->op) { - case OCONST: - if(flag) - n->type = types[TFLOAT]; - return 1; - case OADD: /* no need to get more exotic than this */ - case OSUB: - case OMUL: - case ODIV: - if(!allfloat(n->right, flag)) - break; - case OCAST: - if(!allfloat(n->left, flag)) - break; - if(flag) - n->type = types[TFLOAT]; - return 1; - } - } - return 0; -} - -void -constas(Node *n, Type *il, Type *ir) -{ - Type *l, *r; - - l = il; - r = ir; - - if(l == T) - return; - if(l->garb & GCONSTNT) { - warn(n, "assignment to a constant type (%T)", il); - return; - } - if(r == T) - return; - for(;;) { - if(l->etype != TIND || r->etype != TIND) - break; - l = l->link; - r = r->link; - if(l == T || r == T) - break; - if(r->garb & GCONSTNT) - if(!(l->garb & GCONSTNT)) { - warn(n, "assignment of a constant pointer type (%T)", ir); - break; - } - } -} - -void -typeext1(Type *st, Node *l) -{ - if(st->etype == TFLOAT && allfloat(l, 0)) - allfloat(l, 1); -} - -void -typeext(Type *st, Node *l) -{ - Type *lt; - Node *n1, *n2; - int32 o; - - lt = l->type; - if(lt == T) - return; - if(st->etype == TIND && vconst(l) == 0) { - l->type = st; - l->vconst = 0; - return; - } - typeext1(st, l); - - /* - * extension of C - * if assign of struct containing unnamed sub-struct - * to type of sub-struct, insert the DOT. - * if assign of *struct containing unnamed substruct - * to type of *sub-struct, insert the add-offset - */ - if(typesu[st->etype] && typesu[lt->etype]) { - o = dotoffset(st, lt, l); - if(o >= 0) { - n1 = new1(OXXX, Z, Z); - *n1 = *l; - l->op = ODOT; - l->left = n1; - l->right = Z; - makedot(l, st, o); - } - return; - } - if(st->etype == TIND && typesu[st->link->etype]) - if(lt->etype == TIND && typesu[lt->link->etype]) { - o = dotoffset(st->link, lt->link, l); - if(o >= 0) { - l->type = st; - if(o == 0) - return; - n1 = new1(OXXX, Z, Z); - *n1 = *l; - n2 = new1(OCONST, Z, Z); - n2->vconst = o; - n2->type = st; - l->op = OADD; - l->left = n1; - l->right = n2; - } - return; - } -} - -/* - * a cast that generates no code - * (same size move) - */ -int -nocast(Type *t1, Type *t2) -{ - int i, b; - - if(t1->nbits) - return 0; - i = 0; - if(t2 != T) - i = t2->etype; - b = 1<<i; - i = 0; - if(t1 != T) - i = t1->etype; - if(b & ncast[i]) - return 1; - return 0; -} - -/* - * a cast that has a noop semantic - * (small to large, convert) - */ -int -nilcast(Type *t1, Type *t2) -{ - int et1, et2; - - if(t1 == T) - return 0; - if(t1->nbits) - return 0; - if(t2 == T) - return 0; - et1 = t1->etype; - et2 = t2->etype; - if(et1 == et2) - return 1; - if(typefd[et1] && typefd[et2]) { - if(ewidth[et1] < ewidth[et2]) - return 1; - return 0; - } - if(typechlp[et1] && typechlp[et2]) { - if(ewidth[et1] < ewidth[et2]) - return 1; - return 0; - } - return 0; -} - -/* - * "the usual arithmetic conversions are performed" - */ -void -arith(Node *n, int f) -{ - Type *t1, *t2; - int i, j, k; - Node *n1; - int32 w; - - t1 = n->left->type; - if(n->right == Z) - t2 = t1; - else - t2 = n->right->type; - i = TXXX; - if(t1 != T) - i = t1->etype; - j = TXXX; - if(t2 != T) - j = t2->etype; - k = tab[i][j]; - if(k == TIND) { - if(i == TIND) - n->type = t1; - else - if(j == TIND) - n->type = t2; - } else { - /* convert up to at least int */ - if(f == 1) - while(k < TINT) - k += 2; - n->type = types[k]; - } - if(n->op == OSUB) - if(i == TIND && j == TIND) { - w = n->right->type->link->width; - if(w < 1 || n->left->type->link == T || n->left->type->link->width < 1) - goto bad; - n->type = types[ewidth[TIND] <= ewidth[TLONG]? TLONG: TVLONG]; - if(0 && ewidth[TIND] > ewidth[TLONG]){ - n1 = new1(OXXX, Z, Z); - *n1 = *n; - n->op = OCAST; - n->left = n1; - n->right = Z; - n->type = types[TLONG]; - } - if(w > 1) { - n1 = new1(OXXX, Z, Z); - *n1 = *n; - n->op = ODIV; - n->left = n1; - n1 = new1(OCONST, Z, Z); - n1->vconst = w; - n1->type = n->type; - n->right = n1; - w = vlog(n1); - if(w >= 0) { - n->op = OASHR; - n1->vconst = w; - } - } - return; - } - if(!sametype(n->type, n->left->type)) { - n->left = new1(OCAST, n->left, Z); - n->left->type = n->type; - if(n->type->etype == TIND) { - w = n->type->link->width; - if(w < 1) { - snap(n->type->link); - w = n->type->link->width; - if(w < 1) - goto bad; - } - if(w > 1) { - n1 = new1(OCONST, Z, Z); - n1->vconst = w; - n1->type = n->type; - n->left = new1(OMUL, n->left, n1); - n->left->type = n->type; - } - } - } - if(n->right != Z) - if(!sametype(n->type, n->right->type)) { - n->right = new1(OCAST, n->right, Z); - n->right->type = n->type; - if(n->type->etype == TIND) { - w = n->type->link->width; - if(w < 1) { - snap(n->type->link); - w = n->type->link->width; - if(w < 1) - goto bad; - } - if(w != 1) { - n1 = new1(OCONST, Z, Z); - n1->vconst = w; - n1->type = n->type; - n->right = new1(OMUL, n->right, n1); - n->right->type = n->type; - } - } - } - return; -bad: - diag(n, "pointer addition not fully declared: %T", n->type->link); -} - -/* - * try to rewrite shift & mask - */ -void -simplifyshift(Node *n) -{ - uint32 c3; - int o, s1, s2, c1, c2; - - if(!typechlp[n->type->etype]) - return; - switch(n->op) { - default: - return; - case OASHL: - s1 = 0; - break; - case OLSHR: - s1 = 1; - break; - case OASHR: - s1 = 2; - break; - } - if(n->right->op != OCONST) - return; - if(n->left->op != OAND) - return; - if(n->left->right->op != OCONST) - return; - switch(n->left->left->op) { - default: - return; - case OASHL: - s2 = 0; - break; - case OLSHR: - s2 = 1; - break; - case OASHR: - s2 = 2; - break; - } - if(n->left->left->right->op != OCONST) - return; - - c1 = n->right->vconst; - c2 = n->left->left->right->vconst; - c3 = n->left->right->vconst; - - o = n->op; - switch((s1<<3)|s2) { - case 000: /* (((e <<u c2) & c3) <<u c1) */ - c3 >>= c2; - c1 += c2; - if(c1 >= 32) - break; - goto rewrite1; - - case 002: /* (((e >>s c2) & c3) <<u c1) */ - if(topbit(c3) >= (32-c2)) - break; - case 001: /* (((e >>u c2) & c3) <<u c1) */ - if(c1 > c2) { - c3 <<= c2; - c1 -= c2; - o = OASHL; - goto rewrite1; - } - c3 <<= c1; - if(c1 == c2) - goto rewrite0; - c1 = c2-c1; - o = OLSHR; - goto rewrite2; - - case 022: /* (((e >>s c2) & c3) >>s c1) */ - if(c2 <= 0) - break; - case 012: /* (((e >>s c2) & c3) >>u c1) */ - if(topbit(c3) >= (32-c2)) - break; - goto s11; - case 021: /* (((e >>u c2) & c3) >>s c1) */ - if(topbit(c3) >= 31 && c2 <= 0) - break; - goto s11; - case 011: /* (((e >>u c2) & c3) >>u c1) */ - s11: - c3 <<= c2; - c1 += c2; - if(c1 >= 32) - break; - o = OLSHR; - goto rewrite1; - - case 020: /* (((e <<u c2) & c3) >>s c1) */ - if(topbit(c3) >= 31) - break; - case 010: /* (((e <<u c2) & c3) >>u c1) */ - c3 >>= c1; - if(c1 == c2) - goto rewrite0; - if(c1 > c2) { - c1 -= c2; - goto rewrite2; - } - c1 = c2 - c1; - o = OASHL; - goto rewrite2; - } - return; - -rewrite0: /* get rid of both shifts */ -if(debug['<'])prtree(n, "rewrite0"); - *n = *n->left; - n->left = n->left->left; - n->right->vconst = c3; - return; -rewrite1: /* get rid of lower shift */ -if(debug['<'])prtree(n, "rewrite1"); - n->left->left = n->left->left->left; - n->left->right->vconst = c3; - n->right->vconst = c1; - n->op = o; - return; -rewrite2: /* get rid of upper shift */ -if(debug['<'])prtree(n, "rewrite2"); - *n = *n->left; - n->right->vconst = c3; - n->left->right->vconst = c1; - n->left->op = o; -} - -int -side(Node *n) -{ - -loop: - if(n != Z) - switch(n->op) { - case OCAST: - case ONOT: - case OADDR: - case OIND: - n = n->left; - goto loop; - - case OCOND: - if(side(n->left)) - break; - n = n->right; - - case OEQ: - case ONE: - case OLT: - case OGE: - case OGT: - case OLE: - case OADD: - case OSUB: - case OMUL: - case OLMUL: - case ODIV: - case OLDIV: - case OLSHR: - case OASHL: - case OASHR: - case OAND: - case OOR: - case OXOR: - case OMOD: - case OLMOD: - case OANDAND: - case OOROR: - case OCOMMA: - case ODOT: - if(side(n->left)) - break; - n = n->right; - goto loop; - - case OSIGN: - case OSIZE: - case OCONST: - case OSTRING: - case OLSTRING: - case ONAME: - return 0; - } - return 1; -} - -int -vconst(Node *n) -{ - int i; - - if(n == Z) - goto no; - if(n->op != OCONST) - goto no; - if(n->type == T) - goto no; - switch(n->type->etype) - { - case TFLOAT: - case TDOUBLE: - i = 100; - if(n->fconst > i || n->fconst < -i) - goto no; - i = n->fconst; - if(i != n->fconst) - goto no; - return i; - - case TVLONG: - case TUVLONG: - i = n->vconst; - if(i != n->vconst) - goto no; - return i; - - case TCHAR: - case TUCHAR: - case TSHORT: - case TUSHORT: - case TINT: - case TUINT: - case TLONG: - case TULONG: - case TIND: - i = n->vconst; - if(i != n->vconst) - goto no; - return i; - } -no: - return -159; /* first uninteresting constant */ -} - -/* - * return log(n) if n is a power of 2 constant - */ -int -xlog2(uvlong v) -{ - int s, i; - uvlong m; - - s = 0; - m = MASK(8*sizeof(uvlong)); - for(i=32; i; i>>=1) { - m >>= i; - if(!(v & m)) { - v >>= i; - s += i; - } - } - if(v == 1) - return s; - return -1; -} - -int -vlog(Node *n) -{ - if(n->op != OCONST) - goto bad; - if(typefd[n->type->etype]) - goto bad; - - return xlog2(n->vconst); - -bad: - return -1; -} - -int -topbit(uint32 v) -{ - int i; - - for(i = -1; v; i++) - v >>= 1; - return i; -} - -/* - * try to cast a constant down - * rather than cast a variable up - * example: - * if(c == 'a') - */ -void -relcon(Node *l, Node *r) -{ - vlong v; - - if(l->op != OCONST) - return; - if(r->op != OCAST) - return; - if(!nilcast(r->left->type, r->type)) - return; - switch(r->type->etype) { - default: - return; - case TCHAR: - case TUCHAR: - case TSHORT: - case TUSHORT: - v = convvtox(l->vconst, r->type->etype); - if(v != l->vconst) - return; - break; - } - l->type = r->left->type; - *r = *r->left; -} - -int -relindex(int o) -{ - - switch(o) { - default: - diag(Z, "bad in relindex: %O", o); - case OEQ: return 0; - case ONE: return 1; - case OLE: return 2; - case OLS: return 3; - case OLT: return 4; - case OLO: return 5; - case OGE: return 6; - case OHS: return 7; - case OGT: return 8; - case OHI: return 9; - } -} - -Node* -invert(Node *n) -{ - Node *i; - - if(n == Z || n->op != OLIST) - return n; - i = n; - for(n = n->left; n != Z; n = n->left) { - if(n->op != OLIST) - break; - i->left = n->right; - n->right = i; - i = n; - } - i->left = n; - return i; -} - -int -bitno(int32 b) -{ - int i; - - for(i=0; i<32; i++) - if(b & (1L<<i)) - return i; - diag(Z, "bad in bitno"); - return 0; -} - -int32 -typebitor(int32 a, int32 b) -{ - int32 c; - - c = a | b; - if(a & b) - if((a & b) == BLONG) - c |= BVLONG; /* long long => vlong */ - else - warn(Z, "once is enough: %Q", a & b); - return c; -} - -void -diag(Node *n, char *fmt, ...) -{ - char buf[STRINGSZ]; - va_list arg; - - va_start(arg, fmt); - vseprint(buf, buf+sizeof(buf), fmt, arg); - va_end(arg); - Bprint(&diagbuf, "%L %s\n", (n==Z)? nearln: n->lineno, buf); - - if(debug['X']){ - Bflush(&diagbuf); - abort(); - } - if(n != Z) - if(debug['v']) - prtree(n, "diagnostic"); - - nerrors++; - if(nerrors > 10) { - Bprint(&diagbuf, "too many errors\n"); - errorexit(); - } -} - -void -warn(Node *n, char *fmt, ...) -{ - char buf[STRINGSZ]; - va_list arg; - - if(debug['w']) { - Bprint(&diagbuf, "warning: "); - va_start(arg, fmt); - vseprint(buf, buf+sizeof(buf), fmt, arg); - va_end(arg); - Bprint(&diagbuf, "%L %s\n", (n==Z)? nearln: n->lineno, buf); - - if(n != Z) - if(debug['v']) - prtree(n, "warning"); - } -} - -void -yyerror(char *fmt, ...) -{ - char buf[STRINGSZ]; - va_list arg; - - /* - * hack to intercept message from yaccpar - */ - if(strcmp(fmt, "syntax error") == 0) { - yyerror("syntax error, last name: %s", symb); - return; - } - va_start(arg, fmt); - vseprint(buf, buf+sizeof(buf), fmt, arg); - va_end(arg); - Bprint(&diagbuf, "%L %s\n", lineno, buf); - nerrors++; - if(nerrors > 10) { - Bprint(&diagbuf, "too many errors\n"); - errorexit(); - } -} - -void -fatal(Node *n, char *fmt, ...) -{ - char buf[STRINGSZ]; - va_list arg; - - va_start(arg, fmt); - vseprint(buf, buf+sizeof(buf), fmt, arg); - va_end(arg); - Bprint(&diagbuf, "%L %s\n", (n==Z)? nearln: n->lineno, buf); - - if(debug['X']){ - Bflush(&diagbuf); - abort(); - } - if(n != Z) - if(debug['v']) - prtree(n, "diagnostic"); - - nerrors++; - errorexit(); -} - -uint32 thash1 = 0x2edab8c9; -uint32 thash2 = 0x1dc74fb8; -uint32 thash3 = 0x1f241331; -uint32 thash[NALLTYPES]; -Init thashinit[] = -{ - TXXX, 0x17527bbd, 0, - TCHAR, 0x5cedd32b, 0, - TUCHAR, 0x552c4454, 0, - TSHORT, 0x63040b4b, 0, - TUSHORT, 0x32a45878, 0, - TINT, 0x4151d5bd, 0, - TUINT, 0x5ae707d6, 0, - TLONG, 0x5ef20f47, 0, - TULONG, 0x36d8eb8f, 0, - TVLONG, 0x6e5e9590, 0, - TUVLONG, 0x75910105, 0, - TFLOAT, 0x25fd7af1, 0, - TDOUBLE, 0x7c40a1b2, 0, - TIND, 0x1b832357, 0, - TFUNC, 0x6babc9cb, 0, - TARRAY, 0x7c50986d, 0, - TVOID, 0x44112eff, 0, - TSTRUCT, 0x7c2da3bf, 0, - TUNION, 0x3eb25e98, 0, - TENUM, 0x44b54f61, 0, - TFILE, 0x19242ac3, 0, - TOLD, 0x22b15988, 0, - TDOT, 0x0204f6b3, 0, - -1, 0, 0, -}; - -char* bnames[NALIGN]; -Init bnamesinit[] = -{ - Axxx, 0, "Axxx", - Ael1, 0, "el1", - Ael2, 0, "el2", - Asu2, 0, "su2", - Aarg0, 0, "arg0", - Aarg1, 0, "arg1", - Aarg2, 0, "arg2", - Aaut3, 0, "aut3", - -1, 0, 0, -}; - -char* tnames[NALLTYPES]; -Init tnamesinit[] = -{ - TXXX, 0, "TXXX", - TCHAR, 0, "CHAR", - TUCHAR, 0, "UCHAR", - TSHORT, 0, "SHORT", - TUSHORT, 0, "USHORT", - TINT, 0, "INT", - TUINT, 0, "UINT", - TLONG, 0, "LONG", - TULONG, 0, "ULONG", - TVLONG, 0, "VLONG", - TUVLONG, 0, "UVLONG", - TFLOAT, 0, "FLOAT", - TDOUBLE, 0, "DOUBLE", - TIND, 0, "IND", - TFUNC, 0, "FUNC", - TARRAY, 0, "ARRAY", - TVOID, 0, "VOID", - TSTRUCT, 0, "STRUCT", - TUNION, 0, "UNION", - TENUM, 0, "ENUM", - TFILE, 0, "FILE", - TOLD, 0, "OLD", - TDOT, 0, "DOT", - -1, 0, 0, -}; - -char* gnames[NGTYPES]; -Init gnamesinit[] = -{ - GXXX, 0, "GXXX", - GCONSTNT, 0, "CONST", - GVOLATILE, 0, "VOLATILE", - GVOLATILE|GCONSTNT, 0, "CONST-VOLATILE", - -1, 0, 0, -}; - -char* qnames[NALLTYPES]; -Init qnamesinit[] = -{ - TXXX, 0, "TXXX", - TCHAR, 0, "CHAR", - TUCHAR, 0, "UCHAR", - TSHORT, 0, "SHORT", - TUSHORT, 0, "USHORT", - TINT, 0, "INT", - TUINT, 0, "UINT", - TLONG, 0, "LONG", - TULONG, 0, "ULONG", - TVLONG, 0, "VLONG", - TUVLONG, 0, "UVLONG", - TFLOAT, 0, "FLOAT", - TDOUBLE, 0, "DOUBLE", - TIND, 0, "IND", - TFUNC, 0, "FUNC", - TARRAY, 0, "ARRAY", - TVOID, 0, "VOID", - TSTRUCT, 0, "STRUCT", - TUNION, 0, "UNION", - TENUM, 0, "ENUM", - - TAUTO, 0, "AUTO", - TEXTERN, 0, "EXTERN", - TSTATIC, 0, "STATIC", - TTYPEDEF, 0, "TYPEDEF", - TTYPESTR, 0, "TYPESTR", - TREGISTER, 0, "REGISTER", - TCONSTNT, 0, "CONSTNT", - TVOLATILE, 0, "VOLATILE", - TUNSIGNED, 0, "UNSIGNED", - TSIGNED, 0, "SIGNED", - TDOT, 0, "DOT", - TFILE, 0, "FILE", - TOLD, 0, "OLD", - -1, 0, 0, -}; -char* cnames[NCTYPES]; -Init cnamesinit[] = -{ - CXXX, 0, "CXXX", - CAUTO, 0, "AUTO", - CEXTERN, 0, "EXTERN", - CGLOBL, 0, "GLOBL", - CSTATIC, 0, "STATIC", - CLOCAL, 0, "LOCAL", - CTYPEDEF, 0, "TYPEDEF", - CTYPESTR, 0, "TYPESTR", - CPARAM, 0, "PARAM", - CSELEM, 0, "SELEM", - CLABEL, 0, "LABEL", - CEXREG, 0, "EXREG", - -1, 0, 0, -}; - -char* onames[OEND+1]; -Init onamesinit[] = -{ - OXXX, 0, "OXXX", - OADD, 0, "ADD", - OADDR, 0, "ADDR", - OAND, 0, "AND", - OANDAND, 0, "ANDAND", - OARRAY, 0, "ARRAY", - OAS, 0, "AS", - OASI, 0, "ASI", - OASADD, 0, "ASADD", - OASAND, 0, "ASAND", - OASASHL, 0, "ASASHL", - OASASHR, 0, "ASASHR", - OASDIV, 0, "ASDIV", - OASHL, 0, "ASHL", - OASHR, 0, "ASHR", - OASLDIV, 0, "ASLDIV", - OASLMOD, 0, "ASLMOD", - OASLMUL, 0, "ASLMUL", - OASLSHR, 0, "ASLSHR", - OASMOD, 0, "ASMOD", - OASMUL, 0, "ASMUL", - OASOR, 0, "ASOR", - OASSUB, 0, "ASSUB", - OASXOR, 0, "ASXOR", - OBIT, 0, "BIT", - OBREAK, 0, "BREAK", - OCASE, 0, "CASE", - OCAST, 0, "CAST", - OCOMMA, 0, "COMMA", - OCOND, 0, "COND", - OCONST, 0, "CONST", - OCONTINUE, 0, "CONTINUE", - ODIV, 0, "DIV", - ODOT, 0, "DOT", - ODOTDOT, 0, "DOTDOT", - ODWHILE, 0, "DWHILE", - OENUM, 0, "ENUM", - OEQ, 0, "EQ", - OEXREG, 0, "EXREG", - OFOR, 0, "FOR", - OFUNC, 0, "FUNC", - OGE, 0, "GE", - OGOTO, 0, "GOTO", - OGT, 0, "GT", - OHI, 0, "HI", - OHS, 0, "HS", - OIF, 0, "IF", - OIND, 0, "IND", - OINDREG, 0, "INDREG", - OINIT, 0, "INIT", - OLABEL, 0, "LABEL", - OLDIV, 0, "LDIV", - OLE, 0, "LE", - OLIST, 0, "LIST", - OLMOD, 0, "LMOD", - OLMUL, 0, "LMUL", - OLO, 0, "LO", - OLS, 0, "LS", - OLSHR, 0, "LSHR", - OLT, 0, "LT", - OMOD, 0, "MOD", - OMUL, 0, "MUL", - ONAME, 0, "NAME", - ONE, 0, "NE", - ONOT, 0, "NOT", - OOR, 0, "OR", - OOROR, 0, "OROR", - OPOSTDEC, 0, "POSTDEC", - OPOSTINC, 0, "POSTINC", - OPREDEC, 0, "PREDEC", - OPREINC, 0, "PREINC", - OPREFETCH, 0, "PREFETCH", - OPROTO, 0, "PROTO", - OREGISTER, 0, "REGISTER", - ORETURN, 0, "RETURN", - OSET, 0, "SET", - OSIGN, 0, "SIGN", - OSIZE, 0, "SIZE", - OSTRING, 0, "STRING", - OLSTRING, 0, "LSTRING", - OSTRUCT, 0, "STRUCT", - OSUB, 0, "SUB", - OSWITCH, 0, "SWITCH", - OUNION, 0, "UNION", - OUSED, 0, "USED", - OWHILE, 0, "WHILE", - OXOR, 0, "XOR", - OPOS, 0, "POS", - ONEG, 0, "NEG", - OCOM, 0, "COM", - OELEM, 0, "ELEM", - OTST, 0, "TST", - OINDEX, 0, "INDEX", - OFAS, 0, "FAS", - OREGPAIR, 0, "REGPAIR", - OROTL, 0, "ROTL", - OEND, 0, "END", - -1, 0, 0, -}; - -/* OEQ, ONE, OLE, OLS, OLT, OLO, OGE, OHS, OGT, OHI */ -uchar comrel[12] = -{ - ONE, OEQ, OGT, OHI, OGE, OHS, OLT, OLO, OLE, OLS, -}; -uchar invrel[12] = -{ - OEQ, ONE, OGE, OHS, OGT, OHI, OLE, OLS, OLT, OLO, -}; -uchar logrel[12] = -{ - OEQ, ONE, OLS, OLS, OLO, OLO, OHS, OHS, OHI, OHI, -}; - -uchar typei[NALLTYPES]; -int typeiinit[] = -{ - TCHAR, TUCHAR, TSHORT, TUSHORT, TINT, TUINT, TLONG, TULONG, TVLONG, TUVLONG, -1, -}; -uchar typeu[NALLTYPES]; -int typeuinit[] = -{ - TUCHAR, TUSHORT, TUINT, TULONG, TUVLONG, TIND, -1, -}; - -uchar typesuv[NALLTYPES]; -int typesuvinit[] = -{ - TVLONG, TUVLONG, TSTRUCT, TUNION, -1, -}; - -uchar typeilp[NALLTYPES]; -int typeilpinit[] = -{ - TINT, TUINT, TLONG, TULONG, TIND, -1 -}; - -uchar typechl[NALLTYPES]; -uchar typechlv[NALLTYPES]; -uchar typechlvp[NALLTYPES]; -int typechlinit[] = -{ - TCHAR, TUCHAR, TSHORT, TUSHORT, TINT, TUINT, TLONG, TULONG, -1, -}; - -uchar typechlp[NALLTYPES]; -int typechlpinit[] = -{ - TCHAR, TUCHAR, TSHORT, TUSHORT, TINT, TUINT, TLONG, TULONG, TIND, -1, -}; - -uchar typechlpfd[NALLTYPES]; -int typechlpfdinit[] = -{ - TCHAR, TUCHAR, TSHORT, TUSHORT, TINT, TUINT, TLONG, TULONG, TFLOAT, TDOUBLE, TIND, -1, -}; - -uchar typec[NALLTYPES]; -int typecinit[] = -{ - TCHAR, TUCHAR, -1 -}; - -uchar typeh[NALLTYPES]; -int typehinit[] = -{ - TSHORT, TUSHORT, -1, -}; - -uchar typeil[NALLTYPES]; -int typeilinit[] = -{ - TINT, TUINT, TLONG, TULONG, -1, -}; - -uchar typev[NALLTYPES]; -int typevinit[] = -{ - TVLONG, TUVLONG, -1, -}; - -uchar typefd[NALLTYPES]; -int typefdinit[] = -{ - TFLOAT, TDOUBLE, -1, -}; - -uchar typeaf[NALLTYPES]; -int typeafinit[] = -{ - TFUNC, TARRAY, -1, -}; - -uchar typesu[NALLTYPES]; -int typesuinit[] = -{ - TSTRUCT, TUNION, -1, -}; - -int32 tasign[NALLTYPES]; -Init tasigninit[] = -{ - TCHAR, BNUMBER, 0, - TUCHAR, BNUMBER, 0, - TSHORT, BNUMBER, 0, - TUSHORT, BNUMBER, 0, - TINT, BNUMBER, 0, - TUINT, BNUMBER, 0, - TLONG, BNUMBER, 0, - TULONG, BNUMBER, 0, - TVLONG, BNUMBER, 0, - TUVLONG, BNUMBER, 0, - TFLOAT, BNUMBER, 0, - TDOUBLE, BNUMBER, 0, - TIND, BIND, 0, - TSTRUCT, BSTRUCT, 0, - TUNION, BUNION, 0, - -1, 0, 0, -}; - -int32 tasadd[NALLTYPES]; -Init tasaddinit[] = -{ - TCHAR, BNUMBER, 0, - TUCHAR, BNUMBER, 0, - TSHORT, BNUMBER, 0, - TUSHORT, BNUMBER, 0, - TINT, BNUMBER, 0, - TUINT, BNUMBER, 0, - TLONG, BNUMBER, 0, - TULONG, BNUMBER, 0, - TVLONG, BNUMBER, 0, - TUVLONG, BNUMBER, 0, - TFLOAT, BNUMBER, 0, - TDOUBLE, BNUMBER, 0, - TIND, BINTEGER, 0, - -1, 0, 0, -}; - -int32 tcast[NALLTYPES]; -Init tcastinit[] = -{ - TCHAR, BNUMBER|BIND|BVOID, 0, - TUCHAR, BNUMBER|BIND|BVOID, 0, - TSHORT, BNUMBER|BIND|BVOID, 0, - TUSHORT, BNUMBER|BIND|BVOID, 0, - TINT, BNUMBER|BIND|BVOID, 0, - TUINT, BNUMBER|BIND|BVOID, 0, - TLONG, BNUMBER|BIND|BVOID, 0, - TULONG, BNUMBER|BIND|BVOID, 0, - TVLONG, BNUMBER|BIND|BVOID, 0, - TUVLONG, BNUMBER|BIND|BVOID, 0, - TFLOAT, BNUMBER|BVOID, 0, - TDOUBLE, BNUMBER|BVOID, 0, - TIND, BINTEGER|BIND|BVOID, 0, - TVOID, BVOID, 0, - TSTRUCT, BSTRUCT|BVOID, 0, - TUNION, BUNION|BVOID, 0, - -1, 0, 0, -}; - -int32 tadd[NALLTYPES]; -Init taddinit[] = -{ - TCHAR, BNUMBER|BIND, 0, - TUCHAR, BNUMBER|BIND, 0, - TSHORT, BNUMBER|BIND, 0, - TUSHORT, BNUMBER|BIND, 0, - TINT, BNUMBER|BIND, 0, - TUINT, BNUMBER|BIND, 0, - TLONG, BNUMBER|BIND, 0, - TULONG, BNUMBER|BIND, 0, - TVLONG, BNUMBER|BIND, 0, - TUVLONG, BNUMBER|BIND, 0, - TFLOAT, BNUMBER, 0, - TDOUBLE, BNUMBER, 0, - TIND, BINTEGER, 0, - -1, 0, 0, -}; - -int32 tsub[NALLTYPES]; -Init tsubinit[] = -{ - TCHAR, BNUMBER, 0, - TUCHAR, BNUMBER, 0, - TSHORT, BNUMBER, 0, - TUSHORT, BNUMBER, 0, - TINT, BNUMBER, 0, - TUINT, BNUMBER, 0, - TLONG, BNUMBER, 0, - TULONG, BNUMBER, 0, - TVLONG, BNUMBER, 0, - TUVLONG, BNUMBER, 0, - TFLOAT, BNUMBER, 0, - TDOUBLE, BNUMBER, 0, - TIND, BINTEGER|BIND, 0, - -1, 0, 0, -}; - -int32 tmul[NALLTYPES]; -Init tmulinit[] = -{ - TCHAR, BNUMBER, 0, - TUCHAR, BNUMBER, 0, - TSHORT, BNUMBER, 0, - TUSHORT, BNUMBER, 0, - TINT, BNUMBER, 0, - TUINT, BNUMBER, 0, - TLONG, BNUMBER, 0, - TULONG, BNUMBER, 0, - TVLONG, BNUMBER, 0, - TUVLONG, BNUMBER, 0, - TFLOAT, BNUMBER, 0, - TDOUBLE, BNUMBER, 0, - -1, 0, 0, -}; - -int32 tand[NALLTYPES]; -Init tandinit[] = -{ - TCHAR, BINTEGER, 0, - TUCHAR, BINTEGER, 0, - TSHORT, BINTEGER, 0, - TUSHORT, BINTEGER, 0, - TINT, BNUMBER, 0, - TUINT, BNUMBER, 0, - TLONG, BINTEGER, 0, - TULONG, BINTEGER, 0, - TVLONG, BINTEGER, 0, - TUVLONG, BINTEGER, 0, - -1, 0, 0, -}; - -int32 trel[NALLTYPES]; -Init trelinit[] = -{ - TCHAR, BNUMBER, 0, - TUCHAR, BNUMBER, 0, - TSHORT, BNUMBER, 0, - TUSHORT, BNUMBER, 0, - TINT, BNUMBER, 0, - TUINT, BNUMBER, 0, - TLONG, BNUMBER, 0, - TULONG, BNUMBER, 0, - TVLONG, BNUMBER, 0, - TUVLONG, BNUMBER, 0, - TFLOAT, BNUMBER, 0, - TDOUBLE, BNUMBER, 0, - TIND, BIND, 0, - -1, 0, 0, -}; - -int32 tfunct[1] = -{ - BFUNC, -}; - -int32 tindir[1] = -{ - BIND, -}; - -int32 tdot[1] = -{ - BSTRUCT|BUNION, -}; - -int32 tnot[1] = -{ - BNUMBER|BIND, -}; - -int32 targ[1] = -{ - BNUMBER|BIND|BSTRUCT|BUNION, -}; - -uchar tab[NTYPE][NTYPE] = -{ -/*TXXX*/ { 0, - }, - -/*TCHAR*/ { 0, TCHAR, TUCHAR, TSHORT, TUSHORT, TINT, TUINT, TLONG, - TULONG, TVLONG, TUVLONG, TFLOAT, TDOUBLE, TIND, - }, -/*TUCHAR*/ { 0, TUCHAR, TUCHAR, TUSHORT, TUSHORT, TUINT, TUINT, TULONG, - TULONG, TUVLONG, TUVLONG, TFLOAT, TDOUBLE, TIND, - }, -/*TSHORT*/ { 0, TSHORT, TUSHORT, TSHORT, TUSHORT, TINT, TUINT, TLONG, - TULONG, TVLONG, TUVLONG, TFLOAT, TDOUBLE, TIND, - }, -/*TUSHORT*/ { 0, TUSHORT, TUSHORT, TUSHORT, TUSHORT, TUINT, TUINT, TULONG, - TULONG, TUVLONG, TUVLONG, TFLOAT, TDOUBLE, TIND, - }, -/*TINT*/ { 0, TINT, TUINT, TINT, TUINT, TINT, TUINT, TLONG, - TULONG, TVLONG, TUVLONG, TFLOAT, TDOUBLE, TIND, - }, -/*TUINT*/ { 0, TUINT, TUINT, TUINT, TUINT, TUINT, TUINT, TULONG, - TULONG, TUVLONG, TUVLONG, TFLOAT, TDOUBLE, TIND, - }, -/*TLONG*/ { 0, TLONG, TULONG, TLONG, TULONG, TLONG, TULONG, TLONG, - TULONG, TVLONG, TUVLONG, TFLOAT, TDOUBLE, TIND, - }, -/*TULONG*/ { 0, TULONG, TULONG, TULONG, TULONG, TULONG, TULONG, TULONG, - TULONG, TUVLONG, TUVLONG, TFLOAT, TDOUBLE, TIND, - }, -/*TVLONG*/ { 0, TVLONG, TUVLONG, TVLONG, TUVLONG, TVLONG, TUVLONG, TVLONG, - TUVLONG, TVLONG, TUVLONG, TFLOAT, TDOUBLE, TIND, - }, -/*TUVLONG*/ { 0, TUVLONG, TUVLONG, TUVLONG, TUVLONG, TUVLONG, TUVLONG, TUVLONG, - TUVLONG, TUVLONG, TUVLONG, TFLOAT, TDOUBLE, TIND, - }, -/*TFLOAT*/ { 0, TFLOAT, TFLOAT, TFLOAT, TFLOAT, TFLOAT, TFLOAT, TFLOAT, - TFLOAT, TFLOAT, TFLOAT, TFLOAT, TDOUBLE, TIND, - }, -/*TDOUBLE*/ { 0, TDOUBLE, TDOUBLE, TDOUBLE, TDOUBLE, TDOUBLE, TDOUBLE, TDOUBLE, - TDOUBLE, TDOUBLE, TDOUBLE, TFLOAT, TDOUBLE, TIND, - }, -/*TIND*/ { 0, TIND, TIND, TIND, TIND, TIND, TIND, TIND, - TIND, TIND, TIND, TIND, TIND, TIND, - }, -}; - -void -urk(char *name, int max, int i) -{ - if(i >= max) { - fprint(2, "bad tinit: %s %d>=%d\n", name, i, max); - exits("init"); - } -} - -void -tinit(void) -{ - int *ip; - Init *p; - - for(p=thashinit; p->code >= 0; p++) { - urk("thash", nelem(thash), p->code); - thash[p->code] = p->value; - } - for(p=bnamesinit; p->code >= 0; p++) { - urk("bnames", nelem(bnames), p->code); - bnames[p->code] = p->s; - } - for(p=tnamesinit; p->code >= 0; p++) { - urk("tnames", nelem(tnames), p->code); - tnames[p->code] = p->s; - } - for(p=gnamesinit; p->code >= 0; p++) { - urk("gnames", nelem(gnames), p->code); - gnames[p->code] = p->s; - } - for(p=qnamesinit; p->code >= 0; p++) { - urk("qnames", nelem(qnames), p->code); - qnames[p->code] = p->s; - } - for(p=cnamesinit; p->code >= 0; p++) { - urk("cnames", nelem(cnames), p->code); - cnames[p->code] = p->s; - } - for(p=onamesinit; p->code >= 0; p++) { - urk("onames", nelem(onames), p->code); - onames[p->code] = p->s; - } - for(ip=typeiinit; *ip>=0; ip++) { - urk("typei", nelem(typei), *ip); - typei[*ip] = 1; - } - for(ip=typeuinit; *ip>=0; ip++) { - urk("typeu", nelem(typeu), *ip); - typeu[*ip] = 1; - } - for(ip=typesuvinit; *ip>=0; ip++) { - urk("typesuv", nelem(typesuv), *ip); - typesuv[*ip] = 1; - } - for(ip=typeilpinit; *ip>=0; ip++) { - urk("typeilp", nelem(typeilp), *ip); - typeilp[*ip] = 1; - } - for(ip=typechlinit; *ip>=0; ip++) { - urk("typechl", nelem(typechl), *ip); - typechl[*ip] = 1; - typechlv[*ip] = 1; - typechlvp[*ip] = 1; - } - for(ip=typechlpinit; *ip>=0; ip++) { - urk("typechlp", nelem(typechlp), *ip); - typechlp[*ip] = 1; - typechlvp[*ip] = 1; - } - for(ip=typechlpfdinit; *ip>=0; ip++) { - urk("typechlpfd", nelem(typechlpfd), *ip); - typechlpfd[*ip] = 1; - } - for(ip=typecinit; *ip>=0; ip++) { - urk("typec", nelem(typec), *ip); - typec[*ip] = 1; - } - for(ip=typehinit; *ip>=0; ip++) { - urk("typeh", nelem(typeh), *ip); - typeh[*ip] = 1; - } - for(ip=typeilinit; *ip>=0; ip++) { - urk("typeil", nelem(typeil), *ip); - typeil[*ip] = 1; - } - for(ip=typevinit; *ip>=0; ip++) { - urk("typev", nelem(typev), *ip); - typev[*ip] = 1; - typechlv[*ip] = 1; - typechlvp[*ip] = 1; - } - for(ip=typefdinit; *ip>=0; ip++) { - urk("typefd", nelem(typefd), *ip); - typefd[*ip] = 1; - } - for(ip=typeafinit; *ip>=0; ip++) { - urk("typeaf", nelem(typeaf), *ip); - typeaf[*ip] = 1; - } - for(ip=typesuinit; *ip >= 0; ip++) { - urk("typesu", nelem(typesu), *ip); - typesu[*ip] = 1; - } - for(p=tasigninit; p->code >= 0; p++) { - urk("tasign", nelem(tasign), p->code); - tasign[p->code] = p->value; - } - for(p=tasaddinit; p->code >= 0; p++) { - urk("tasadd", nelem(tasadd), p->code); - tasadd[p->code] = p->value; - } - for(p=tcastinit; p->code >= 0; p++) { - urk("tcast", nelem(tcast), p->code); - tcast[p->code] = p->value; - } - for(p=taddinit; p->code >= 0; p++) { - urk("tadd", nelem(tadd), p->code); - tadd[p->code] = p->value; - } - for(p=tsubinit; p->code >= 0; p++) { - urk("tsub", nelem(tsub), p->code); - tsub[p->code] = p->value; - } - for(p=tmulinit; p->code >= 0; p++) { - urk("tmul", nelem(tmul), p->code); - tmul[p->code] = p->value; - } - for(p=tandinit; p->code >= 0; p++) { - urk("tand", nelem(tand), p->code); - tand[p->code] = p->value; - } - for(p=trelinit; p->code >= 0; p++) { - urk("trel", nelem(trel), p->code); - trel[p->code] = p->value; - } - - /* 32-bit defaults */ - typeword = typechlp; - typecmplx = typesuv; -} - -/* - * return 1 if it is impossible to jump into the middle of n. - */ -static int -deadhead(Node *n, int caseok) -{ -loop: - if(n == Z) - return 1; - switch(n->op) { - case OLIST: - if(!deadhead(n->left, caseok)) - return 0; - rloop: - n = n->right; - goto loop; - - case ORETURN: - break; - - case OLABEL: - return 0; - - case OGOTO: - break; - - case OCASE: - if(!caseok) - return 0; - goto rloop; - - case OSWITCH: - return deadhead(n->right, 1); - - case OWHILE: - case ODWHILE: - goto rloop; - - case OFOR: - goto rloop; - - case OCONTINUE: - break; - - case OBREAK: - break; - - case OIF: - return deadhead(n->right->left, caseok) && deadhead(n->right->right, caseok); - - case OSET: - case OUSED: - break; - } - return 1; -} - -int -deadheads(Node *c) -{ - return deadhead(c->left, 0) && deadhead(c->right, 0); -} - -int -mixedasop(Type *l, Type *r) -{ - return !typefd[l->etype] && typefd[r->etype]; -} - -LSym* -linksym(Sym *s) -{ - if(s == nil) - return nil; - if(s->lsym != nil) - return s->lsym; - return linklookup(ctxt, s->name, s->class == CSTATIC); -} diff --git a/src/cmd/cc/y.tab.c b/src/cmd/cc/y.tab.c deleted file mode 100644 index 94932efe5..000000000 --- a/src/cmd/cc/y.tab.c +++ /dev/null @@ -1,3822 +0,0 @@ -/* A Bison parser, made by GNU Bison 2.3. */ - -/* Skeleton implementation for Bison's Yacc-like parsers in C - - Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006 - Free Software Foundation, Inc. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 51 Franklin Street, Fifth Floor, - Boston, MA 02110-1301, USA. */ - -/* As a special exception, you may create a larger work that contains - part or all of the Bison parser skeleton and distribute that work - under terms of your choice, so long as that work isn't itself a - parser generator using the skeleton or a modified version thereof - as a parser skeleton. Alternatively, if you modify or redistribute - the parser skeleton itself, you may (at your option) remove this - special exception, which will cause the skeleton and the resulting - Bison output files to be licensed under the GNU General Public - License without this special exception. - - This special exception was added by the Free Software Foundation in - version 2.2 of Bison. */ - -/* C LALR(1) parser skeleton written by Richard Stallman, by - simplifying the original so-called "semantic" parser. */ - -/* All symbols defined below should begin with yy or YY, to avoid - infringing on user name space. This should be done even for local - variables, as they might otherwise be expanded by user macros. - There are some unavoidable exceptions within include files to - define necessary library symbols; they are noted "INFRINGES ON - USER NAME SPACE" below. */ - -/* Identify Bison output. */ -#define YYBISON 1 - -/* Bison version. */ -#define YYBISON_VERSION "2.3" - -/* Skeleton name. */ -#define YYSKELETON_NAME "yacc.c" - -/* Pure parsers. */ -#define YYPURE 0 - -/* Using locations. */ -#define YYLSP_NEEDED 0 - - - -/* Tokens. */ -#ifndef YYTOKENTYPE -# define YYTOKENTYPE - /* Put the tokens into the symbol table, so that GDB and other debuggers - know about them. */ - enum yytokentype { - LORE = 258, - LXORE = 259, - LANDE = 260, - LLSHE = 261, - LRSHE = 262, - LMDE = 263, - LDVE = 264, - LMLE = 265, - LME = 266, - LPE = 267, - LOROR = 268, - LANDAND = 269, - LNE = 270, - LEQ = 271, - LGE = 272, - LLE = 273, - LRSH = 274, - LLSH = 275, - LMG = 276, - LPP = 277, - LMM = 278, - LNAME = 279, - LTYPE = 280, - LFCONST = 281, - LDCONST = 282, - LCONST = 283, - LLCONST = 284, - LUCONST = 285, - LULCONST = 286, - LVLCONST = 287, - LUVLCONST = 288, - LSTRING = 289, - LLSTRING = 290, - LAUTO = 291, - LBREAK = 292, - LCASE = 293, - LCHAR = 294, - LCONTINUE = 295, - LDEFAULT = 296, - LDO = 297, - LDOUBLE = 298, - LELSE = 299, - LEXTERN = 300, - LFLOAT = 301, - LFOR = 302, - LGOTO = 303, - LIF = 304, - LINT = 305, - LLONG = 306, - LPREFETCH = 307, - LREGISTER = 308, - LRETURN = 309, - LSHORT = 310, - LSIZEOF = 311, - LUSED = 312, - LSTATIC = 313, - LSTRUCT = 314, - LSWITCH = 315, - LTYPEDEF = 316, - LTYPESTR = 317, - LUNION = 318, - LUNSIGNED = 319, - LWHILE = 320, - LVOID = 321, - LENUM = 322, - LSIGNED = 323, - LCONSTNT = 324, - LVOLATILE = 325, - LSET = 326, - LSIGNOF = 327, - LRESTRICT = 328, - LINLINE = 329 - }; -#endif -/* Tokens. */ -#define LORE 258 -#define LXORE 259 -#define LANDE 260 -#define LLSHE 261 -#define LRSHE 262 -#define LMDE 263 -#define LDVE 264 -#define LMLE 265 -#define LME 266 -#define LPE 267 -#define LOROR 268 -#define LANDAND 269 -#define LNE 270 -#define LEQ 271 -#define LGE 272 -#define LLE 273 -#define LRSH 274 -#define LLSH 275 -#define LMG 276 -#define LPP 277 -#define LMM 278 -#define LNAME 279 -#define LTYPE 280 -#define LFCONST 281 -#define LDCONST 282 -#define LCONST 283 -#define LLCONST 284 -#define LUCONST 285 -#define LULCONST 286 -#define LVLCONST 287 -#define LUVLCONST 288 -#define LSTRING 289 -#define LLSTRING 290 -#define LAUTO 291 -#define LBREAK 292 -#define LCASE 293 -#define LCHAR 294 -#define LCONTINUE 295 -#define LDEFAULT 296 -#define LDO 297 -#define LDOUBLE 298 -#define LELSE 299 -#define LEXTERN 300 -#define LFLOAT 301 -#define LFOR 302 -#define LGOTO 303 -#define LIF 304 -#define LINT 305 -#define LLONG 306 -#define LPREFETCH 307 -#define LREGISTER 308 -#define LRETURN 309 -#define LSHORT 310 -#define LSIZEOF 311 -#define LUSED 312 -#define LSTATIC 313 -#define LSTRUCT 314 -#define LSWITCH 315 -#define LTYPEDEF 316 -#define LTYPESTR 317 -#define LUNION 318 -#define LUNSIGNED 319 -#define LWHILE 320 -#define LVOID 321 -#define LENUM 322 -#define LSIGNED 323 -#define LCONSTNT 324 -#define LVOLATILE 325 -#define LSET 326 -#define LSIGNOF 327 -#define LRESTRICT 328 -#define LINLINE 329 - - - - -/* Copy the first part of user declarations. */ -#line 31 "cc.y" - -#include <u.h> -#include <stdio.h> /* if we don't, bison will, and cc.h re-#defines getc */ -#include "cc.h" - - -/* Enabling traces. */ -#ifndef YYDEBUG -# define YYDEBUG 0 -#endif - -/* Enabling verbose error messages. */ -#ifdef YYERROR_VERBOSE -# undef YYERROR_VERBOSE -# define YYERROR_VERBOSE 1 -#else -# define YYERROR_VERBOSE 0 -#endif - -/* Enabling the token table. */ -#ifndef YYTOKEN_TABLE -# define YYTOKEN_TABLE 0 -#endif - -#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED -typedef union YYSTYPE -#line 36 "cc.y" -{ - Node* node; - Sym* sym; - Type* type; - struct - { - Type* t; - uchar c; - } tycl; - struct - { - Type* t1; - Type* t2; - Type* t3; - uchar c; - } tyty; - struct - { - char* s; - int32 l; - } sval; - int32 lval; - double dval; - vlong vval; -} -/* Line 193 of yacc.c. */ -#line 276 "y.tab.c" - YYSTYPE; -# define yystype YYSTYPE /* obsolescent; will be withdrawn */ -# define YYSTYPE_IS_DECLARED 1 -# define YYSTYPE_IS_TRIVIAL 1 -#endif - - - -/* Copy the second part of user declarations. */ - - -/* Line 216 of yacc.c. */ -#line 289 "y.tab.c" - -#ifdef short -# undef short -#endif - -#ifdef YYTYPE_UINT8 -typedef YYTYPE_UINT8 yytype_uint8; -#else -typedef unsigned char yytype_uint8; -#endif - -#ifdef YYTYPE_INT8 -typedef YYTYPE_INT8 yytype_int8; -#elif (defined __STDC__ || defined __C99__FUNC__ \ - || defined __cplusplus || defined _MSC_VER) -typedef signed char yytype_int8; -#else -typedef short int yytype_int8; -#endif - -#ifdef YYTYPE_UINT16 -typedef YYTYPE_UINT16 yytype_uint16; -#else -typedef unsigned short int yytype_uint16; -#endif - -#ifdef YYTYPE_INT16 -typedef YYTYPE_INT16 yytype_int16; -#else -typedef short int yytype_int16; -#endif - -#ifndef YYSIZE_T -# ifdef __SIZE_TYPE__ -# define YYSIZE_T __SIZE_TYPE__ -# elif defined size_t -# define YYSIZE_T size_t -# elif ! defined YYSIZE_T && (defined __STDC__ || defined __C99__FUNC__ \ - || defined __cplusplus || defined _MSC_VER) -# include <stddef.h> /* INFRINGES ON USER NAME SPACE */ -# define YYSIZE_T size_t -# else -# define YYSIZE_T unsigned int -# endif -#endif - -#define YYSIZE_MAXIMUM ((YYSIZE_T) -1) - -#ifndef YY_ -# if defined YYENABLE_NLS && YYENABLE_NLS -# if ENABLE_NLS -# include <libintl.h> /* INFRINGES ON USER NAME SPACE */ -# define YY_(msgid) dgettext ("bison-runtime", msgid) -# endif -# endif -# ifndef YY_ -# define YY_(msgid) msgid -# endif -#endif - -/* Suppress unused-variable warnings by "using" E. */ -#if ! defined lint || defined __GNUC__ -# define YYUSE(e) ((void) (e)) -#else -# define YYUSE(e) /* empty */ -#endif - -/* Identity function, used to suppress warnings about constant conditions. */ -#ifndef lint -# define YYID(n) (n) -#else -#if (defined __STDC__ || defined __C99__FUNC__ \ - || defined __cplusplus || defined _MSC_VER) -static int -YYID (int i) -#else -static int -YYID (i) - int i; -#endif -{ - return i; -} -#endif - -#if ! defined yyoverflow || YYERROR_VERBOSE - -/* The parser invokes alloca or malloc; define the necessary symbols. */ - -# ifdef YYSTACK_USE_ALLOCA -# if YYSTACK_USE_ALLOCA -# ifdef __GNUC__ -# define YYSTACK_ALLOC __builtin_alloca -# elif defined __BUILTIN_VA_ARG_INCR -# include <alloca.h> /* INFRINGES ON USER NAME SPACE */ -# elif defined _AIX -# define YYSTACK_ALLOC __alloca -# elif defined _MSC_VER -# include <malloc.h> /* INFRINGES ON USER NAME SPACE */ -# define alloca _alloca -# else -# define YYSTACK_ALLOC alloca -# if ! defined _ALLOCA_H && ! defined _STDLIB_H && (defined __STDC__ || defined __C99__FUNC__ \ - || defined __cplusplus || defined _MSC_VER) -# include <stdlib.h> /* INFRINGES ON USER NAME SPACE */ -# ifndef _STDLIB_H -# define _STDLIB_H 1 -# endif -# endif -# endif -# endif -# endif - -# ifdef YYSTACK_ALLOC - /* Pacify GCC's `empty if-body' warning. */ -# define YYSTACK_FREE(Ptr) do { /* empty */; } while (YYID (0)) -# ifndef YYSTACK_ALLOC_MAXIMUM - /* The OS might guarantee only one guard page at the bottom of the stack, - and a page size can be as small as 4096 bytes. So we cannot safely - invoke alloca (N) if N exceeds 4096. Use a slightly smaller number - to allow for a few compiler-allocated temporary stack slots. */ -# define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */ -# endif -# else -# define YYSTACK_ALLOC YYMALLOC -# define YYSTACK_FREE YYFREE -# ifndef YYSTACK_ALLOC_MAXIMUM -# define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM -# endif -# if (defined __cplusplus && ! defined _STDLIB_H \ - && ! ((defined YYMALLOC || defined malloc) \ - && (defined YYFREE || defined free))) -# include <stdlib.h> /* INFRINGES ON USER NAME SPACE */ -# ifndef _STDLIB_H -# define _STDLIB_H 1 -# endif -# endif -# ifndef YYMALLOC -# define YYMALLOC malloc -# if ! defined malloc && ! defined _STDLIB_H && (defined __STDC__ || defined __C99__FUNC__ \ - || defined __cplusplus || defined _MSC_VER) -void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */ -# endif -# endif -# ifndef YYFREE -# define YYFREE free -# if ! defined free && ! defined _STDLIB_H && (defined __STDC__ || defined __C99__FUNC__ \ - || defined __cplusplus || defined _MSC_VER) -void free (void *); /* INFRINGES ON USER NAME SPACE */ -# endif -# endif -# endif -#endif /* ! defined yyoverflow || YYERROR_VERBOSE */ - - -#if (! defined yyoverflow \ - && (! defined __cplusplus \ - || (defined YYSTYPE_IS_TRIVIAL && YYSTYPE_IS_TRIVIAL))) - -/* A type that is properly aligned for any stack member. */ -union yyalloc -{ - yytype_int16 yyss; - YYSTYPE yyvs; - }; - -/* The size of the maximum gap between one aligned stack and the next. */ -# define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1) - -/* The size of an array large to enough to hold all stacks, each with - N elements. */ -# define YYSTACK_BYTES(N) \ - ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \ - + YYSTACK_GAP_MAXIMUM) - -/* Copy COUNT objects from FROM to TO. The source and destination do - not overlap. */ -# ifndef YYCOPY -# if defined __GNUC__ && 1 < __GNUC__ -# define YYCOPY(To, From, Count) \ - __builtin_memcpy (To, From, (Count) * sizeof (*(From))) -# else -# define YYCOPY(To, From, Count) \ - do \ - { \ - YYSIZE_T yyi; \ - for (yyi = 0; yyi < (Count); yyi++) \ - (To)[yyi] = (From)[yyi]; \ - } \ - while (YYID (0)) -# endif -# endif - -/* Relocate STACK from its old location to the new one. The - local variables YYSIZE and YYSTACKSIZE give the old and new number of - elements in the stack, and YYPTR gives the new location of the - stack. Advance YYPTR to a properly aligned location for the next - stack. */ -# define YYSTACK_RELOCATE(Stack) \ - do \ - { \ - YYSIZE_T yynewbytes; \ - YYCOPY (&yyptr->Stack, Stack, yysize); \ - Stack = &yyptr->Stack; \ - yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \ - yyptr += yynewbytes / sizeof (*yyptr); \ - } \ - while (YYID (0)) - -#endif - -/* YYFINAL -- State number of the termination state. */ -#define YYFINAL 2 -/* YYLAST -- Last index in YYTABLE. */ -#define YYLAST 1188 - -/* YYNTOKENS -- Number of terminals. */ -#define YYNTOKENS 99 -/* YYNNTS -- Number of nonterminals. */ -#define YYNNTS 75 -/* YYNRULES -- Number of rules. */ -#define YYNRULES 247 -/* YYNRULES -- Number of states. */ -#define YYNSTATES 417 - -/* YYTRANSLATE(YYLEX) -- Bison symbol number corresponding to YYLEX. */ -#define YYUNDEFTOK 2 -#define YYMAXUTOK 329 - -#define YYTRANSLATE(YYX) \ - ((unsigned int) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK) - -/* YYTRANSLATE[YYLEX] -- Bison symbol number corresponding to YYLEX. */ -static const yytype_uint8 yytranslate[] = -{ - 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 97, 2, 2, 2, 35, 22, 2, - 38, 93, 33, 31, 4, 32, 36, 34, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 17, 3, - 25, 5, 26, 16, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 37, 2, 94, 21, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 95, 20, 96, 98, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 2, 2, 2, 1, 2, 6, 7, - 8, 9, 10, 11, 12, 13, 14, 15, 18, 19, - 23, 24, 27, 28, 29, 30, 39, 40, 41, 42, - 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, - 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, - 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, - 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, - 83, 84, 85, 86, 87, 88, 89, 90, 91, 92 -}; - -#if YYDEBUG -/* YYPRHS[YYN] -- Index of the first RHS symbol of rule number YYN in - YYRHS. */ -static const yytype_uint16 yyprhs[] = -{ - 0, 0, 3, 4, 7, 10, 14, 15, 16, 23, - 25, 26, 31, 35, 37, 41, 43, 47, 52, 57, - 60, 64, 66, 67, 72, 76, 77, 82, 84, 88, - 89, 94, 95, 101, 102, 104, 106, 110, 112, 116, - 119, 120, 122, 125, 129, 131, 133, 138, 143, 146, - 150, 154, 156, 160, 164, 167, 170, 173, 177, 179, - 182, 184, 186, 189, 190, 192, 194, 197, 200, 204, - 208, 212, 213, 216, 219, 221, 224, 228, 231, 234, - 237, 239, 242, 244, 247, 250, 251, 254, 260, 268, - 269, 280, 286, 294, 298, 304, 307, 310, 314, 320, - 326, 332, 333, 335, 336, 338, 340, 342, 346, 348, - 352, 356, 360, 364, 368, 372, 376, 380, 384, 388, - 392, 396, 400, 404, 408, 412, 416, 420, 426, 430, - 434, 438, 442, 446, 450, 454, 458, 462, 466, 470, - 472, 478, 486, 488, 491, 494, 497, 500, 503, 506, - 509, 512, 515, 518, 522, 528, 534, 539, 544, 548, - 552, 555, 558, 560, 562, 564, 566, 568, 570, 572, - 574, 576, 578, 580, 582, 585, 587, 590, 591, 593, - 595, 599, 600, 605, 606, 608, 610, 612, 614, 617, - 620, 624, 627, 631, 633, 635, 638, 639, 644, 647, - 650, 651, 656, 659, 662, 663, 664, 672, 673, 679, - 681, 683, 686, 687, 690, 692, 694, 696, 698, 701, - 703, 705, 707, 711, 714, 718, 720, 722, 724, 726, - 728, 730, 732, 734, 736, 738, 740, 742, 744, 746, - 748, 750, 752, 754, 756, 758, 760, 762 -}; - -/* YYRHS -- A `-1'-separated list of the rules' RHS. */ -static const yytype_int16 yyrhs[] = -{ - 100, 0, -1, -1, 100, 101, -1, 152, 3, -1, - 152, 104, 3, -1, -1, -1, 152, 106, 102, 111, - 103, 129, -1, 106, -1, -1, 106, 105, 5, 123, - -1, 104, 4, 104, -1, 107, -1, 33, 163, 106, - -1, 172, -1, 38, 106, 93, -1, 107, 38, 127, - 93, -1, 107, 37, 139, 94, -1, 155, 3, -1, - 155, 109, 3, -1, 106, -1, -1, 106, 110, 5, - 123, -1, 109, 4, 109, -1, -1, 111, 155, 112, - 3, -1, 106, -1, 112, 4, 112, -1, -1, 154, - 114, 116, 3, -1, -1, 113, 154, 115, 116, 3, - -1, -1, 117, -1, 118, -1, 117, 4, 117, -1, - 106, -1, 172, 17, 140, -1, 17, 140, -1, -1, - 120, -1, 33, 163, -1, 33, 163, 120, -1, 121, - -1, 122, -1, 121, 38, 127, 93, -1, 121, 37, - 139, 94, -1, 38, 93, -1, 37, 139, 94, -1, - 38, 120, 93, -1, 142, -1, 95, 126, 96, -1, - 37, 140, 94, -1, 36, 173, -1, 124, 5, -1, - 123, 4, -1, 125, 123, 4, -1, 124, -1, 125, - 124, -1, 125, -1, 123, -1, 125, 123, -1, -1, - 128, -1, 171, -1, 154, 119, -1, 154, 106, -1, - 36, 36, 36, -1, 128, 4, 128, -1, 95, 130, - 96, -1, -1, 130, 108, -1, 130, 133, -1, 132, - -1, 131, 132, -1, 56, 142, 17, -1, 59, 17, - -1, 42, 17, -1, 1, 3, -1, 135, -1, 131, - 135, -1, 138, -1, 155, 109, -1, 138, 3, -1, - -1, 136, 129, -1, 67, 38, 141, 93, 133, -1, - 67, 38, 141, 93, 133, 62, 133, -1, -1, 137, - 65, 38, 134, 3, 138, 3, 138, 93, 133, -1, - 83, 38, 141, 93, 133, -1, 60, 133, 83, 38, - 141, 93, 3, -1, 72, 138, 3, -1, 78, 38, - 141, 93, 133, -1, 55, 3, -1, 58, 3, -1, - 66, 173, 3, -1, 75, 38, 148, 93, 3, -1, - 70, 38, 148, 93, 3, -1, 89, 38, 148, 93, - 3, -1, -1, 141, -1, -1, 140, -1, 142, -1, - 142, -1, 141, 4, 141, -1, 143, -1, 142, 33, - 142, -1, 142, 34, 142, -1, 142, 35, 142, -1, - 142, 31, 142, -1, 142, 32, 142, -1, 142, 29, - 142, -1, 142, 30, 142, -1, 142, 25, 142, -1, - 142, 26, 142, -1, 142, 28, 142, -1, 142, 27, - 142, -1, 142, 24, 142, -1, 142, 23, 142, -1, - 142, 22, 142, -1, 142, 21, 142, -1, 142, 20, - 142, -1, 142, 19, 142, -1, 142, 18, 142, -1, - 142, 16, 141, 17, 142, -1, 142, 5, 142, -1, - 142, 15, 142, -1, 142, 14, 142, -1, 142, 13, - 142, -1, 142, 12, 142, -1, 142, 11, 142, -1, - 142, 9, 142, -1, 142, 10, 142, -1, 142, 8, - 142, -1, 142, 7, 142, -1, 142, 6, 142, -1, - 144, -1, 38, 154, 119, 93, 143, -1, 38, 154, - 119, 93, 95, 126, 96, -1, 145, -1, 33, 143, - -1, 22, 143, -1, 31, 143, -1, 32, 143, -1, - 97, 143, -1, 98, 143, -1, 40, 143, -1, 41, - 143, -1, 74, 144, -1, 90, 144, -1, 38, 141, - 93, -1, 74, 38, 154, 119, 93, -1, 90, 38, - 154, 119, 93, -1, 145, 38, 148, 93, -1, 145, - 37, 141, 94, -1, 145, 39, 173, -1, 145, 36, - 173, -1, 145, 40, -1, 145, 41, -1, 171, -1, - 46, -1, 47, -1, 48, -1, 49, -1, 45, -1, - 44, -1, 50, -1, 51, -1, 146, -1, 147, -1, - 52, -1, 146, 52, -1, 53, -1, 147, 53, -1, - -1, 149, -1, 142, -1, 149, 4, 149, -1, -1, - 95, 151, 113, 96, -1, -1, 155, -1, 156, -1, - 168, -1, 165, -1, 156, 162, -1, 168, 162, -1, - 165, 156, 163, -1, 165, 168, -1, 165, 168, 162, - -1, 153, -1, 153, -1, 77, 173, -1, -1, 77, - 173, 157, 150, -1, 77, 150, -1, 81, 173, -1, - -1, 81, 173, 158, 150, -1, 81, 150, -1, 85, - 173, -1, -1, -1, 85, 173, 159, 95, 160, 167, - 96, -1, -1, 85, 95, 161, 167, 96, -1, 43, - -1, 164, -1, 162, 164, -1, -1, 163, 170, -1, - 168, -1, 170, -1, 169, -1, 166, -1, 165, 166, - -1, 170, -1, 169, -1, 42, -1, 42, 5, 142, - -1, 167, 4, -1, 167, 4, 167, -1, 57, -1, - 73, -1, 68, -1, 69, -1, 86, -1, 82, -1, - 64, -1, 61, -1, 84, -1, 54, -1, 76, -1, - 63, -1, 79, -1, 80, -1, 71, -1, 92, -1, - 87, -1, 88, -1, 91, -1, 42, -1, 173, -1, - 42, -1, 43, -1 -}; - -/* YYRLINE[YYN] -- source line where rule number YYN was defined. */ -static const yytype_uint16 yyrline[] = -{ - 0, 101, 101, 102, 108, 112, 114, 128, 113, 143, - 148, 147, 155, 158, 159, 166, 167, 171, 175, 184, - 188, 194, 200, 199, 211, 224, 225, 228, 232, 239, - 238, 244, 243, 250, 254, 257, 261, 264, 269, 273, - 282, 285, 288, 293, 298, 301, 302, 306, 312, 316, - 320, 326, 327, 333, 337, 342, 345, 346, 350, 351, - 357, 358, 359, 365, 368, 375, 376, 381, 386, 390, - 396, 406, 409, 413, 419, 420, 426, 430, 434, 440, - 444, 445, 451, 452, 458, 459, 459, 470, 476, 484, - 484, 495, 499, 503, 508, 522, 526, 530, 534, 538, - 542, 548, 551, 554, 557, 560, 567, 568, 574, 575, - 579, 583, 587, 591, 595, 599, 603, 607, 611, 615, - 619, 623, 627, 631, 635, 639, 643, 647, 651, 655, - 659, 663, 667, 671, 675, 679, 683, 687, 691, 697, - 698, 705, 713, 714, 718, 722, 726, 730, 734, 738, - 742, 746, 750, 756, 760, 766, 772, 780, 784, 789, - 794, 798, 802, 803, 810, 817, 824, 831, 838, 845, - 852, 859, 860, 863, 873, 891, 901, 919, 922, 925, - 926, 933, 932, 955, 959, 962, 967, 972, 978, 986, - 992, 998, 1004, 1012, 1020, 1027, 1033, 1032, 1044, 1053, - 1059, 1058, 1070, 1078, 1087, 1091, 1086, 1108, 1107, 1116, - 1122, 1123, 1129, 1132, 1138, 1139, 1140, 1143, 1144, 1150, - 1151, 1154, 1158, 1162, 1163, 1166, 1167, 1168, 1169, 1170, - 1171, 1172, 1173, 1174, 1177, 1178, 1179, 1180, 1181, 1182, - 1183, 1186, 1187, 1188, 1191, 1206, 1218, 1219 -}; -#endif - -#if YYDEBUG || YYERROR_VERBOSE || YYTOKEN_TABLE -/* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM. - First, the terminals, then, starting at YYNTOKENS, nonterminals. */ -static const char *const yytname[] = -{ - "$end", "error", "$undefined", "';'", "','", "'='", "LORE", "LXORE", - "LANDE", "LLSHE", "LRSHE", "LMDE", "LDVE", "LMLE", "LME", "LPE", "'?'", - "':'", "LOROR", "LANDAND", "'|'", "'^'", "'&'", "LNE", "LEQ", "'<'", - "'>'", "LGE", "LLE", "LRSH", "LLSH", "'+'", "'-'", "'*'", "'/'", "'%'", - "'.'", "'['", "'('", "LMG", "LPP", "LMM", "LNAME", "LTYPE", "LFCONST", - "LDCONST", "LCONST", "LLCONST", "LUCONST", "LULCONST", "LVLCONST", - "LUVLCONST", "LSTRING", "LLSTRING", "LAUTO", "LBREAK", "LCASE", "LCHAR", - "LCONTINUE", "LDEFAULT", "LDO", "LDOUBLE", "LELSE", "LEXTERN", "LFLOAT", - "LFOR", "LGOTO", "LIF", "LINT", "LLONG", "LPREFETCH", "LREGISTER", - "LRETURN", "LSHORT", "LSIZEOF", "LUSED", "LSTATIC", "LSTRUCT", "LSWITCH", - "LTYPEDEF", "LTYPESTR", "LUNION", "LUNSIGNED", "LWHILE", "LVOID", - "LENUM", "LSIGNED", "LCONSTNT", "LVOLATILE", "LSET", "LSIGNOF", - "LRESTRICT", "LINLINE", "')'", "']'", "'{'", "'}'", "'!'", "'~'", - "$accept", "prog", "xdecl", "@1", "@2", "xdlist", "@3", "xdecor", - "xdecor2", "adecl", "adlist", "@4", "pdecl", "pdlist", "edecl", "@5", - "@6", "zedlist", "edlist", "edecor", "abdecor", "abdecor1", "abdecor2", - "abdecor3", "init", "qual", "qlist", "ilist", "zarglist", "arglist", - "block", "slist", "labels", "label", "stmnt", "forexpr", "ulstmnt", "@7", - "@8", "zcexpr", "zexpr", "lexpr", "cexpr", "expr", "xuexpr", "uexpr", - "pexpr", "string", "lstring", "zelist", "elist", "sbody", "@9", - "zctlist", "types", "tlist", "ctlist", "complex", "@10", "@11", "@12", - "@13", "@14", "gctnlist", "zgnlist", "gctname", "gcnlist", "gcname", - "enum", "tname", "cname", "gname", "name", "tag", "ltag", 0 -}; -#endif - -# ifdef YYPRINT -/* YYTOKNUM[YYLEX-NUM] -- Internal token number corresponding to - token YYLEX-NUM. */ -static const yytype_uint16 yytoknum[] = -{ - 0, 256, 257, 59, 44, 61, 258, 259, 260, 261, - 262, 263, 264, 265, 266, 267, 63, 58, 268, 269, - 124, 94, 38, 270, 271, 60, 62, 272, 273, 274, - 275, 43, 45, 42, 47, 37, 46, 91, 40, 276, - 277, 278, 279, 280, 281, 282, 283, 284, 285, 286, - 287, 288, 289, 290, 291, 292, 293, 294, 295, 296, - 297, 298, 299, 300, 301, 302, 303, 304, 305, 306, - 307, 308, 309, 310, 311, 312, 313, 314, 315, 316, - 317, 318, 319, 320, 321, 322, 323, 324, 325, 326, - 327, 328, 329, 41, 93, 123, 125, 33, 126 -}; -# endif - -/* YYR1[YYN] -- Symbol number of symbol that rule YYN derives. */ -static const yytype_uint8 yyr1[] = -{ - 0, 99, 100, 100, 101, 101, 102, 103, 101, 104, - 105, 104, 104, 106, 106, 107, 107, 107, 107, 108, - 108, 109, 110, 109, 109, 111, 111, 112, 112, 114, - 113, 115, 113, 116, 116, 117, 117, 118, 118, 118, - 119, 119, 120, 120, 120, 121, 121, 121, 122, 122, - 122, 123, 123, 124, 124, 124, 125, 125, 125, 125, - 126, 126, 126, 127, 127, 128, 128, 128, 128, 128, - 129, 130, 130, 130, 131, 131, 132, 132, 132, 133, - 133, 133, 134, 134, 135, 136, 135, 135, 135, 137, - 135, 135, 135, 135, 135, 135, 135, 135, 135, 135, - 135, 138, 138, 139, 139, 140, 141, 141, 142, 142, - 142, 142, 142, 142, 142, 142, 142, 142, 142, 142, - 142, 142, 142, 142, 142, 142, 142, 142, 142, 142, - 142, 142, 142, 142, 142, 142, 142, 142, 142, 143, - 143, 143, 144, 144, 144, 144, 144, 144, 144, 144, - 144, 144, 144, 145, 145, 145, 145, 145, 145, 145, - 145, 145, 145, 145, 145, 145, 145, 145, 145, 145, - 145, 145, 145, 146, 146, 147, 147, 148, 148, 149, - 149, 151, 150, 152, 152, 153, 153, 153, 153, 153, - 153, 153, 153, 154, 155, 156, 157, 156, 156, 156, - 158, 156, 156, 156, 159, 160, 156, 161, 156, 156, - 162, 162, 163, 163, 164, 164, 164, 165, 165, 166, - 166, 167, 167, 167, 167, 168, 168, 168, 168, 168, - 168, 168, 168, 168, 169, 169, 169, 169, 169, 169, - 169, 170, 170, 170, 171, 172, 173, 173 -}; - -/* YYR2[YYN] -- Number of symbols composing right hand side of rule YYN. */ -static const yytype_uint8 yyr2[] = -{ - 0, 2, 0, 2, 2, 3, 0, 0, 6, 1, - 0, 4, 3, 1, 3, 1, 3, 4, 4, 2, - 3, 1, 0, 4, 3, 0, 4, 1, 3, 0, - 4, 0, 5, 0, 1, 1, 3, 1, 3, 2, - 0, 1, 2, 3, 1, 1, 4, 4, 2, 3, - 3, 1, 3, 3, 2, 2, 2, 3, 1, 2, - 1, 1, 2, 0, 1, 1, 2, 2, 3, 3, - 3, 0, 2, 2, 1, 2, 3, 2, 2, 2, - 1, 2, 1, 2, 2, 0, 2, 5, 7, 0, - 10, 5, 7, 3, 5, 2, 2, 3, 5, 5, - 5, 0, 1, 0, 1, 1, 1, 3, 1, 3, - 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, - 3, 3, 3, 3, 3, 3, 3, 5, 3, 3, - 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, - 5, 7, 1, 2, 2, 2, 2, 2, 2, 2, - 2, 2, 2, 3, 5, 5, 4, 4, 3, 3, - 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 2, 1, 2, 0, 1, 1, - 3, 0, 4, 0, 1, 1, 1, 1, 2, 2, - 3, 2, 3, 1, 1, 2, 0, 4, 2, 2, - 0, 4, 2, 2, 0, 0, 7, 0, 5, 1, - 1, 2, 0, 2, 1, 1, 1, 1, 2, 1, - 1, 1, 3, 2, 3, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1 -}; - -/* YYDEFACT[STATE-NAME] -- Default rule to reduce with in state - STATE-NUM when YYTABLE doesn't specify something else to do. Zero - means the default is an error. */ -static const yytype_uint8 yydefact[] = -{ - 2, 183, 1, 209, 234, 225, 232, 236, 231, 227, - 228, 239, 226, 235, 0, 237, 238, 0, 230, 233, - 0, 229, 241, 242, 243, 240, 3, 0, 194, 184, - 185, 187, 217, 186, 220, 219, 246, 247, 181, 198, - 195, 202, 199, 207, 203, 4, 212, 0, 0, 6, - 13, 15, 245, 188, 210, 214, 216, 215, 212, 218, - 191, 189, 0, 0, 0, 0, 0, 0, 0, 5, - 0, 25, 0, 103, 63, 211, 190, 192, 0, 193, - 29, 197, 201, 221, 0, 205, 14, 213, 16, 12, - 9, 7, 0, 0, 0, 0, 0, 0, 0, 0, - 244, 168, 167, 163, 164, 165, 166, 169, 170, 173, - 175, 0, 0, 0, 0, 0, 104, 105, 108, 139, - 142, 171, 172, 162, 0, 0, 64, 40, 65, 182, - 31, 33, 0, 223, 208, 0, 0, 0, 0, 11, - 51, 144, 145, 146, 143, 0, 106, 40, 149, 150, - 0, 151, 0, 152, 147, 148, 18, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 177, - 0, 160, 161, 174, 176, 0, 17, 0, 212, 103, - 0, 67, 66, 41, 44, 45, 33, 0, 37, 0, - 34, 35, 15, 222, 224, 0, 71, 8, 27, 0, - 0, 0, 61, 58, 60, 0, 0, 153, 212, 0, - 0, 40, 40, 128, 138, 137, 136, 134, 135, 133, - 132, 131, 130, 129, 0, 126, 125, 124, 123, 122, - 121, 120, 116, 117, 119, 118, 114, 115, 112, 113, - 109, 110, 111, 159, 0, 179, 0, 178, 158, 68, - 69, 42, 0, 48, 0, 103, 63, 0, 39, 30, - 0, 0, 206, 0, 26, 0, 54, 0, 56, 55, - 62, 59, 52, 107, 42, 0, 0, 0, 0, 157, - 156, 0, 43, 49, 50, 0, 0, 32, 36, 38, - 0, 244, 0, 0, 0, 0, 0, 0, 0, 0, - 101, 0, 0, 0, 0, 70, 72, 85, 74, 73, - 80, 0, 0, 0, 102, 0, 28, 53, 57, 0, - 140, 154, 155, 127, 180, 47, 46, 79, 78, 95, - 0, 96, 77, 0, 0, 0, 177, 0, 177, 0, - 0, 177, 75, 81, 86, 0, 84, 19, 21, 0, - 0, 76, 0, 97, 0, 0, 93, 0, 0, 0, - 0, 101, 0, 20, 0, 141, 0, 0, 0, 0, - 0, 0, 0, 0, 82, 0, 0, 24, 0, 87, - 99, 98, 94, 91, 100, 101, 83, 23, 0, 0, - 0, 92, 88, 101, 0, 0, 90 -}; - -/* YYDEFGOTO[NTERM-NUM]. */ -static const yytype_int16 yydefgoto[] = -{ - -1, 1, 26, 71, 136, 48, 72, 208, 50, 326, - 369, 382, 91, 219, 78, 131, 206, 209, 210, 211, - 202, 203, 204, 205, 222, 223, 224, 225, 125, 126, - 217, 283, 327, 328, 329, 393, 330, 331, 332, 333, - 115, 116, 334, 146, 118, 119, 120, 121, 122, 266, - 267, 39, 62, 27, 79, 127, 29, 30, 63, 64, - 66, 135, 65, 53, 67, 54, 31, 32, 84, 33, - 34, 35, 123, 51, 52 -}; - -/* YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing - STATE-NUM. */ -#define YYPACT_NINF -331 -static const yytype_int16 yypact[] = -{ - -331, 548, -331, -331, -331, -331, -331, -331, -331, -331, - -331, -331, -331, -331, -3, -331, -331, -3, -331, -331, - 149, -331, -331, -331, -331, -331, -331, 264, -331, -331, - 965, 929, -331, 965, -331, -331, -331, -331, -331, -331, - -75, -331, -72, -331, -60, -331, -331, 307, 60, 270, - 156, -331, -331, 965, -331, -331, -331, -331, -331, -331, - 965, 965, 929, -44, -44, 29, -15, 199, -10, -331, - 307, -331, 83, 756, 849, -331, 140, 965, 889, -331, - -331, -331, -331, 86, 12, -331, -331, -331, -331, -331, - 90, 929, 686, 756, 756, 756, 756, 615, 756, 756, - -331, -331, -331, -331, -331, -331, -331, -331, -331, -331, - -331, 791, 826, 756, 756, 9, -331, 1084, -331, -331, - 708, 54, 57, -331, 110, 56, 152, 310, -331, -331, - -331, 279, 756, 29, -331, 29, 63, 307, 165, -331, - 1084, -331, -331, -331, -331, 30, 1084, 44, -331, -331, - 615, -331, 615, -331, -331, -331, -331, 756, 756, 756, - 756, 756, 756, 756, 756, 756, 756, 756, 756, 756, - 756, 756, 756, 756, 756, 756, 756, 756, 756, 756, - 756, 756, 756, 756, 756, 756, 756, 157, 756, 756, - 157, -331, -331, -331, -331, 115, -331, 849, -331, 756, - 128, -331, -331, -331, 182, -331, 279, 756, -331, 164, - 200, -331, 208, 1084, -331, 13, -331, -331, -331, 262, - 157, 756, 225, 228, 165, 73, 756, -331, -331, -7, - 150, 44, 44, 1084, 1084, 1084, 1084, 1084, 1084, 1084, - 1084, 1084, 1084, 1084, 28, 304, 1100, 1115, 1129, 1142, - 1153, 1153, 433, 433, 433, 433, 333, 333, 265, 265, - -331, -331, -331, -331, 8, 1084, 153, 236, -331, -331, - -331, 147, 158, -331, 161, 756, 849, 247, -331, -331, - 279, 756, -331, 341, -331, 307, -331, 175, -331, -331, - 254, 228, -331, -331, 135, 721, 188, 190, 756, -331, - -331, 756, -331, -331, -331, 191, 211, -331, -331, -331, - 298, 301, 338, 756, 343, 339, 439, 157, 319, 321, - 756, 322, 323, 324, 332, -331, -331, 509, -331, -331, - -331, 63, 306, 372, 373, 277, -331, -331, -331, 165, - -331, -331, -331, 425, -331, -331, -331, -331, -331, -331, - 1053, -331, -331, 293, 375, 756, 756, 400, 756, 756, - 756, 756, -331, -331, -331, 396, -331, -331, 430, 285, - 377, -331, 431, -331, 55, 381, -331, 382, 62, 64, - 383, 615, 473, -331, 307, -331, 756, 439, 479, 490, - 439, 439, 493, 497, -331, 307, 686, -331, 66, 440, - -331, -331, -331, -331, -331, 756, 499, -331, 498, 439, - 504, -331, -331, 756, 415, 439, -331 -}; - -/* YYPGOTO[NTERM-NUM]. */ -static const yytype_int16 yypgoto[] = -{ - -331, -331, -331, -331, -331, 445, -331, -26, -331, -331, - -330, -331, -331, 233, -331, -331, -331, 313, 230, -331, - -132, -187, -331, -331, -82, 292, -331, 181, 245, 326, - 193, -331, -331, 198, -227, -331, 203, -331, -331, -309, - -181, -183, -83, -45, -38, 243, -331, -331, -331, -175, - 226, 10, -331, -331, -1, 0, -88, 495, -331, -331, - -331, -331, -331, -14, -51, -28, -331, 501, -85, 218, - 231, -24, -52, -127, -12 -}; - -/* YYTABLE[YYPACT[STATE-NUM]]. What to do in state STATE-NUM. If - positive, shift that token. If negative, reduce the rule which - number is the opposite. If zero, do what YYDEFACT says. - If YYTABLE_NINF, syntax error. */ -#define YYTABLE_NINF -205 -static const yytype_int16 yytable[] = -{ - 28, 49, 40, 137, 212, 42, 57, 76, 44, 57, - 139, 357, 226, 274, 145, 230, 133, 133, 272, 61, - -196, 68, 128, -200, 278, 75, 228, 41, 117, 57, - 199, 229, 226, 75, 226, -204, 57, 57, 287, 36, - 37, 86, 274, 87, 90, 298, 77, 140, 214, 75, - 215, 38, 87, 57, 397, 141, 142, 143, 144, 226, - 148, 149, 80, 69, 70, 406, 226, 145, 226, 145, - 226, 83, 394, 81, 82, 154, 155, 228, 130, 212, - 85, 199, 229, 88, 302, 244, 273, 213, 92, 353, - 28, 132, 38, 140, 305, -10, 410, 147, 309, 296, - 297, 201, 299, 156, 414, 264, 193, 302, 134, 282, - 194, 218, 233, 234, 235, 236, 237, 238, 239, 240, - 241, 242, 243, 227, 245, 246, 247, 248, 249, 250, - 251, 252, 253, 254, 255, 256, 257, 258, 259, 260, - 261, 262, 290, 293, 265, 128, 195, 271, 387, 196, - 231, 269, 232, 212, 117, 390, 197, 391, 216, 408, - 399, 198, 117, 402, 403, 199, 200, 279, 228, 292, - 36, 37, 199, 229, 68, 263, 117, 294, 268, 140, - 198, 375, 412, 377, 199, 200, 380, 93, 416, 36, - 37, 36, 37, 73, 74, 335, 94, 95, 96, 36, - 37, 220, 221, 97, 280, 98, 99, 100, 286, 101, - 102, 103, 104, 105, 106, 107, 108, 109, 110, 275, - 276, 273, 22, 23, 128, 281, 24, 22, 23, 288, - 117, 24, 46, 289, 22, 23, 117, 47, 24, 111, - 301, 36, 37, 295, 43, 86, 300, 87, 55, 60, - 307, 55, 303, 343, 304, 112, 265, 340, 338, 218, - 138, 56, 113, 114, 56, 284, 285, 45, 350, 337, - 87, 55, 374, -9, -9, -10, 378, 379, 55, 55, - 367, 341, 28, 342, 56, 345, 22, 23, 383, 384, - 24, 56, 56, 395, 140, 55, 207, 46, 184, 185, - 186, 347, 47, 398, 346, 354, 36, 37, 56, 368, - 46, 265, 46, 265, 407, 47, 265, 47, 348, 36, - 37, 36, 37, 170, 171, 172, 173, 174, 175, 176, - 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, - 46, 349, 310, 198, -101, 47, 351, 199, 200, 36, - 37, 140, 36, 37, 151, 153, 352, 355, 368, 356, - 358, 359, 360, 93, 182, 183, 184, 185, 186, 368, - 361, 365, 94, 95, 96, 366, 372, 226, 373, 97, - 28, 98, 99, 311, 3, 101, 102, 103, 104, 105, - 106, 107, 108, 109, 110, 4, 312, 313, 5, 314, - 315, 316, 6, 376, 7, 8, -89, 317, 318, 9, - 10, 319, 11, 320, 12, 111, 321, 13, 14, 322, - 15, 16, 17, 18, 323, 19, 20, 21, 22, 23, - 324, 112, 24, 25, 381, -22, -85, 325, 113, 114, - 310, 168, -101, 169, 170, 171, 172, 173, 174, 175, - 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, - 186, 93, 180, 181, 182, 183, 184, 185, 186, 386, - 94, 95, 96, 385, 388, 389, 392, 97, 396, 98, - 99, 311, 400, 101, 102, 103, 104, 105, 106, 107, - 108, 109, 110, 401, 312, 313, 404, 314, 315, 316, - 405, 411, 409, 384, -89, 317, 318, 413, 415, 319, - 308, 320, -101, 111, 321, 89, 291, 322, 336, 277, - 370, 306, 323, 270, 364, 362, 58, 344, 324, 112, - 363, 93, 59, 0, -85, 0, 113, 114, 0, 0, - 94, 95, 96, 0, 0, 0, 0, 97, 2, 98, - 99, 311, 0, 101, 102, 103, 104, 105, 106, 107, - 108, 109, 110, 0, 312, 313, 0, 314, 315, 316, - 0, 0, 0, 0, -89, 317, 318, 0, 0, 319, - 0, 320, 0, 111, 321, 0, 0, 322, 0, 0, - 0, 3, 323, 0, 0, 0, 0, 0, 324, 112, - 0, 0, 4, 0, 0, 5, 113, 114, 0, 6, - 0, 7, 8, 0, 0, 0, 9, 10, 0, 11, - 0, 12, 0, 0, 13, 14, 0, 15, 16, 17, - 18, 0, 19, 20, 21, 22, 23, 93, 0, 24, - 25, 0, 0, 0, 0, 0, 94, 95, 96, 0, - 0, 0, 0, 97, 0, 98, 99, 100, 3, 101, - 102, 103, 104, 105, 106, 107, 108, 109, 110, 4, - 0, 0, 5, 0, 0, 0, 6, 0, 7, 8, - 0, 0, 0, 9, 10, 0, 11, 0, 12, 111, - 0, 13, 14, 0, 15, 16, 17, 18, 0, 19, - 20, 21, 22, 23, 0, 112, 24, 25, 93, 0, - 0, 0, 113, 114, 0, 0, 0, 94, 95, 96, - 0, 0, 0, 0, 97, 0, 98, 99, 100, 0, - 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, - 0, 0, 0, 93, 187, 188, 189, 190, 191, 192, - 0, 0, 94, 95, 96, 0, 0, 0, 0, 97, - 111, 98, 99, 100, 0, 101, 102, 103, 104, 105, - 106, 107, 108, 109, 110, 0, 112, 0, 93, 0, - 0, 138, 0, 113, 114, 0, 0, 94, 95, 96, - 0, 0, 0, 0, 97, 111, 98, 99, 100, 0, - 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, - 0, 112, 0, 93, 0, 0, 339, 0, 113, 114, - 0, 0, 94, 95, 96, 0, 0, 0, 0, 150, - 111, 98, 99, 100, 0, 101, 102, 103, 104, 105, - 106, 107, 108, 109, 110, 0, 112, 0, 93, 0, - 0, 0, 0, 113, 114, 0, 0, 94, 95, 96, - 0, 0, 0, 0, 152, 111, 98, 99, 100, 0, - 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, - 0, 112, 0, 0, 0, 124, 0, 0, 113, 114, - 0, 100, 3, 0, 0, 0, 0, 0, 0, 0, - 111, 0, 0, 4, 0, 0, 5, 0, 0, 0, - 6, 0, 7, 8, 0, 0, 112, 9, 10, 0, - 11, 0, 12, 113, 114, 13, 14, 0, 15, 16, - 17, 18, 3, 19, 20, 21, 22, 23, 0, 0, - 24, 25, 0, 4, 0, 0, 5, 0, 0, 0, - 6, 0, 7, 8, 0, 0, 0, 9, 10, 0, - 11, 0, 12, 0, 0, 13, 14, 0, 15, 16, - 17, 18, 3, 19, 20, 21, 22, 23, 0, 0, - 24, 25, 0, 4, 0, 129, 5, 0, 0, 0, - 6, 0, 7, 8, 0, 0, 0, 9, 10, 0, - 11, 0, 12, 0, 0, 13, 14, 0, 15, 16, - 17, 18, 0, 19, 20, 21, 22, 23, 0, 4, - 24, 25, 5, 0, 0, 0, 6, 0, 7, 8, - 0, 0, 0, 9, 10, 0, 11, 0, 12, 0, - 0, 13, 0, 0, 15, 16, 0, 18, 0, 19, - 0, 21, 22, 23, 0, 0, 24, 25, 157, 158, - 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, - 371, 169, 170, 171, 172, 173, 174, 175, 176, 177, - 178, 179, 180, 181, 182, 183, 184, 185, 186, 157, - 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, - 168, 0, 169, 170, 171, 172, 173, 174, 175, 176, - 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, - 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, - 181, 182, 183, 184, 185, 186, 172, 173, 174, 175, - 176, 177, 178, 179, 180, 181, 182, 183, 184, 185, - 186, 173, 174, 175, 176, 177, 178, 179, 180, 181, - 182, 183, 184, 185, 186, 174, 175, 176, 177, 178, - 179, 180, 181, 182, 183, 184, 185, 186, 176, 177, - 178, 179, 180, 181, 182, 183, 184, 185, 186 -}; - -static const yytype_int16 yycheck[] = -{ - 1, 27, 14, 91, 131, 17, 30, 58, 20, 33, - 92, 320, 4, 200, 97, 147, 4, 4, 199, 33, - 95, 47, 74, 95, 207, 53, 33, 17, 73, 53, - 37, 38, 4, 61, 4, 95, 60, 61, 221, 42, - 43, 67, 229, 67, 70, 17, 60, 92, 133, 77, - 135, 95, 76, 77, 384, 93, 94, 95, 96, 4, - 98, 99, 62, 3, 4, 395, 4, 150, 4, 152, - 4, 42, 381, 63, 64, 113, 114, 33, 78, 206, - 95, 37, 38, 93, 271, 168, 93, 132, 5, 316, - 91, 5, 95, 138, 275, 5, 405, 97, 281, 231, - 232, 127, 94, 94, 413, 188, 52, 294, 96, 96, - 53, 137, 157, 158, 159, 160, 161, 162, 163, 164, - 165, 166, 167, 93, 169, 170, 171, 172, 173, 174, - 175, 176, 177, 178, 179, 180, 181, 182, 183, 184, - 185, 186, 224, 226, 189, 197, 36, 198, 93, 93, - 150, 36, 152, 280, 199, 93, 4, 93, 95, 93, - 387, 33, 207, 390, 391, 37, 38, 3, 33, 96, - 42, 43, 37, 38, 200, 187, 221, 228, 190, 224, - 33, 356, 409, 358, 37, 38, 361, 22, 415, 42, - 43, 42, 43, 37, 38, 283, 31, 32, 33, 42, - 43, 36, 37, 38, 4, 40, 41, 42, 220, 44, - 45, 46, 47, 48, 49, 50, 51, 52, 53, 37, - 38, 93, 87, 88, 276, 17, 91, 87, 88, 4, - 275, 91, 33, 5, 87, 88, 281, 38, 91, 74, - 4, 42, 43, 93, 95, 271, 93, 271, 30, 31, - 3, 33, 94, 298, 93, 90, 301, 295, 4, 285, - 95, 30, 97, 98, 33, 3, 4, 3, 313, 94, - 294, 53, 355, 3, 4, 5, 359, 360, 60, 61, - 3, 93, 283, 93, 53, 94, 87, 88, 3, 4, - 91, 60, 61, 381, 339, 77, 17, 33, 33, 34, - 35, 3, 38, 386, 93, 317, 42, 43, 77, 335, - 33, 356, 33, 358, 396, 38, 361, 38, 17, 42, - 43, 42, 43, 19, 20, 21, 22, 23, 24, 25, - 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, - 33, 3, 1, 33, 3, 38, 3, 37, 38, 42, - 43, 396, 42, 43, 111, 112, 17, 38, 384, 38, - 38, 38, 38, 22, 31, 32, 33, 34, 35, 395, - 38, 65, 31, 32, 33, 3, 83, 4, 3, 38, - 381, 40, 41, 42, 43, 44, 45, 46, 47, 48, - 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, - 59, 60, 61, 3, 63, 64, 65, 66, 67, 68, - 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, - 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, - 89, 90, 91, 92, 38, 5, 95, 96, 97, 98, - 1, 16, 3, 18, 19, 20, 21, 22, 23, 24, - 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, - 35, 22, 29, 30, 31, 32, 33, 34, 35, 38, - 31, 32, 33, 96, 93, 93, 93, 38, 5, 40, - 41, 42, 3, 44, 45, 46, 47, 48, 49, 50, - 51, 52, 53, 3, 55, 56, 3, 58, 59, 60, - 3, 3, 62, 4, 65, 66, 67, 3, 93, 70, - 280, 72, 3, 74, 75, 70, 224, 78, 285, 206, - 339, 276, 83, 197, 331, 327, 31, 301, 89, 90, - 327, 22, 31, -1, 95, -1, 97, 98, -1, -1, - 31, 32, 33, -1, -1, -1, -1, 38, 0, 40, - 41, 42, -1, 44, 45, 46, 47, 48, 49, 50, - 51, 52, 53, -1, 55, 56, -1, 58, 59, 60, - -1, -1, -1, -1, 65, 66, 67, -1, -1, 70, - -1, 72, -1, 74, 75, -1, -1, 78, -1, -1, - -1, 43, 83, -1, -1, -1, -1, -1, 89, 90, - -1, -1, 54, -1, -1, 57, 97, 98, -1, 61, - -1, 63, 64, -1, -1, -1, 68, 69, -1, 71, - -1, 73, -1, -1, 76, 77, -1, 79, 80, 81, - 82, -1, 84, 85, 86, 87, 88, 22, -1, 91, - 92, -1, -1, -1, -1, -1, 31, 32, 33, -1, - -1, -1, -1, 38, -1, 40, 41, 42, 43, 44, - 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, - -1, -1, 57, -1, -1, -1, 61, -1, 63, 64, - -1, -1, -1, 68, 69, -1, 71, -1, 73, 74, - -1, 76, 77, -1, 79, 80, 81, 82, -1, 84, - 85, 86, 87, 88, -1, 90, 91, 92, 22, -1, - -1, -1, 97, 98, -1, -1, -1, 31, 32, 33, - -1, -1, -1, -1, 38, -1, 40, 41, 42, -1, - 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, - -1, -1, -1, 22, 36, 37, 38, 39, 40, 41, - -1, -1, 31, 32, 33, -1, -1, -1, -1, 38, - 74, 40, 41, 42, -1, 44, 45, 46, 47, 48, - 49, 50, 51, 52, 53, -1, 90, -1, 22, -1, - -1, 95, -1, 97, 98, -1, -1, 31, 32, 33, - -1, -1, -1, -1, 38, 74, 40, 41, 42, -1, - 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, - -1, 90, -1, 22, -1, -1, 95, -1, 97, 98, - -1, -1, 31, 32, 33, -1, -1, -1, -1, 38, - 74, 40, 41, 42, -1, 44, 45, 46, 47, 48, - 49, 50, 51, 52, 53, -1, 90, -1, 22, -1, - -1, -1, -1, 97, 98, -1, -1, 31, 32, 33, - -1, -1, -1, -1, 38, 74, 40, 41, 42, -1, - 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, - -1, 90, -1, -1, -1, 36, -1, -1, 97, 98, - -1, 42, 43, -1, -1, -1, -1, -1, -1, -1, - 74, -1, -1, 54, -1, -1, 57, -1, -1, -1, - 61, -1, 63, 64, -1, -1, 90, 68, 69, -1, - 71, -1, 73, 97, 98, 76, 77, -1, 79, 80, - 81, 82, 43, 84, 85, 86, 87, 88, -1, -1, - 91, 92, -1, 54, -1, -1, 57, -1, -1, -1, - 61, -1, 63, 64, -1, -1, -1, 68, 69, -1, - 71, -1, 73, -1, -1, 76, 77, -1, 79, 80, - 81, 82, 43, 84, 85, 86, 87, 88, -1, -1, - 91, 92, -1, 54, -1, 96, 57, -1, -1, -1, - 61, -1, 63, 64, -1, -1, -1, 68, 69, -1, - 71, -1, 73, -1, -1, 76, 77, -1, 79, 80, - 81, 82, -1, 84, 85, 86, 87, 88, -1, 54, - 91, 92, 57, -1, -1, -1, 61, -1, 63, 64, - -1, -1, -1, 68, 69, -1, 71, -1, 73, -1, - -1, 76, -1, -1, 79, 80, -1, 82, -1, 84, - -1, 86, 87, 88, -1, -1, 91, 92, 5, 6, - 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, - 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, - 27, 28, 29, 30, 31, 32, 33, 34, 35, 5, - 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, - 16, -1, 18, 19, 20, 21, 22, 23, 24, 25, - 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, - 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, - 30, 31, 32, 33, 34, 35, 21, 22, 23, 24, - 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, - 35, 22, 23, 24, 25, 26, 27, 28, 29, 30, - 31, 32, 33, 34, 35, 23, 24, 25, 26, 27, - 28, 29, 30, 31, 32, 33, 34, 35, 25, 26, - 27, 28, 29, 30, 31, 32, 33, 34, 35 -}; - -/* YYSTOS[STATE-NUM] -- The (internal number of the) accessing - symbol of state STATE-NUM. */ -static const yytype_uint8 yystos[] = -{ - 0, 100, 0, 43, 54, 57, 61, 63, 64, 68, - 69, 71, 73, 76, 77, 79, 80, 81, 82, 84, - 85, 86, 87, 88, 91, 92, 101, 152, 153, 155, - 156, 165, 166, 168, 169, 170, 42, 43, 95, 150, - 173, 150, 173, 95, 173, 3, 33, 38, 104, 106, - 107, 172, 173, 162, 164, 168, 169, 170, 156, 166, - 168, 162, 151, 157, 158, 161, 159, 163, 106, 3, - 4, 102, 105, 37, 38, 164, 163, 162, 113, 153, - 154, 150, 150, 42, 167, 95, 106, 170, 93, 104, - 106, 111, 5, 22, 31, 32, 33, 38, 40, 41, - 42, 44, 45, 46, 47, 48, 49, 50, 51, 52, - 53, 74, 90, 97, 98, 139, 140, 142, 143, 144, - 145, 146, 147, 171, 36, 127, 128, 154, 171, 96, - 154, 114, 5, 4, 96, 160, 103, 155, 95, 123, - 142, 143, 143, 143, 143, 141, 142, 154, 143, 143, - 38, 144, 38, 144, 143, 143, 94, 5, 6, 7, - 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, - 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, - 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, - 39, 40, 41, 52, 53, 36, 93, 4, 33, 37, - 38, 106, 119, 120, 121, 122, 115, 17, 106, 116, - 117, 118, 172, 142, 167, 167, 95, 129, 106, 112, - 36, 37, 123, 124, 125, 126, 4, 93, 33, 38, - 119, 154, 154, 142, 142, 142, 142, 142, 142, 142, - 142, 142, 142, 142, 141, 142, 142, 142, 142, 142, - 142, 142, 142, 142, 142, 142, 142, 142, 142, 142, - 142, 142, 142, 173, 141, 142, 148, 149, 173, 36, - 128, 163, 139, 93, 120, 37, 38, 116, 140, 3, - 4, 17, 96, 130, 3, 4, 173, 140, 4, 5, - 123, 124, 96, 141, 163, 93, 119, 119, 17, 94, - 93, 4, 120, 94, 93, 139, 127, 3, 117, 140, - 1, 42, 55, 56, 58, 59, 60, 66, 67, 70, - 72, 75, 78, 83, 89, 96, 108, 131, 132, 133, - 135, 136, 137, 138, 141, 155, 112, 94, 4, 95, - 143, 93, 93, 142, 149, 94, 93, 3, 17, 3, - 142, 3, 17, 133, 173, 38, 38, 138, 38, 38, - 38, 38, 132, 135, 129, 65, 3, 3, 106, 109, - 126, 17, 83, 3, 141, 148, 3, 148, 141, 141, - 148, 38, 110, 3, 4, 96, 38, 93, 93, 93, - 93, 93, 93, 134, 138, 155, 5, 109, 141, 133, - 3, 3, 133, 133, 3, 3, 109, 123, 93, 62, - 138, 3, 133, 3, 138, 93, 133 -}; - -#define yyerrok (yyerrstatus = 0) -#define yyclearin (yychar = YYEMPTY) -#define YYEMPTY (-2) -#define YYEOF 0 - -#define YYACCEPT goto yyacceptlab -#define YYABORT goto yyabortlab -#define YYERROR goto yyerrorlab - - -/* Like YYERROR except do call yyerror. This remains here temporarily - to ease the transition to the new meaning of YYERROR, for GCC. - Once GCC version 2 has supplanted version 1, this can go. */ - -#define YYFAIL goto yyerrlab - -#define YYRECOVERING() (!!yyerrstatus) - -#define YYBACKUP(Token, Value) \ -do \ - if (yychar == YYEMPTY && yylen == 1) \ - { \ - yychar = (Token); \ - yylval = (Value); \ - yytoken = YYTRANSLATE (yychar); \ - YYPOPSTACK (1); \ - goto yybackup; \ - } \ - else \ - { \ - yyerror (YY_("syntax error: cannot back up")); \ - YYERROR; \ - } \ -while (YYID (0)) - - -#define YYTERROR 1 -#define YYERRCODE 256 - - -/* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N]. - If N is 0, then set CURRENT to the empty location which ends - the previous symbol: RHS[0] (always defined). */ - -#define YYRHSLOC(Rhs, K) ((Rhs)[K]) -#ifndef YYLLOC_DEFAULT -# define YYLLOC_DEFAULT(Current, Rhs, N) \ - do \ - if (YYID (N)) \ - { \ - (Current).first_line = YYRHSLOC (Rhs, 1).first_line; \ - (Current).first_column = YYRHSLOC (Rhs, 1).first_column; \ - (Current).last_line = YYRHSLOC (Rhs, N).last_line; \ - (Current).last_column = YYRHSLOC (Rhs, N).last_column; \ - } \ - else \ - { \ - (Current).first_line = (Current).last_line = \ - YYRHSLOC (Rhs, 0).last_line; \ - (Current).first_column = (Current).last_column = \ - YYRHSLOC (Rhs, 0).last_column; \ - } \ - while (YYID (0)) -#endif - - -/* YY_LOCATION_PRINT -- Print the location on the stream. - This macro was not mandated originally: define only if we know - we won't break user code: when these are the locations we know. */ - -#ifndef YY_LOCATION_PRINT -# if defined YYLTYPE_IS_TRIVIAL && YYLTYPE_IS_TRIVIAL -# define YY_LOCATION_PRINT(File, Loc) \ - fprintf (File, "%d.%d-%d.%d", \ - (Loc).first_line, (Loc).first_column, \ - (Loc).last_line, (Loc).last_column) -# else -# define YY_LOCATION_PRINT(File, Loc) ((void) 0) -# endif -#endif - - -/* YYLEX -- calling `yylex' with the right arguments. */ - -#ifdef YYLEX_PARAM -# define YYLEX yylex (YYLEX_PARAM) -#else -# define YYLEX yylex () -#endif - -/* Enable debugging if requested. */ -#if YYDEBUG - -# ifndef YYFPRINTF -# include <stdio.h> /* INFRINGES ON USER NAME SPACE */ -# define YYFPRINTF fprintf -# endif - -# define YYDPRINTF(Args) \ -do { \ - if (yydebug) \ - YYFPRINTF Args; \ -} while (YYID (0)) - -# define YY_SYMBOL_PRINT(Title, Type, Value, Location) \ -do { \ - if (yydebug) \ - { \ - YYFPRINTF (stderr, "%s ", Title); \ - yy_symbol_print (stderr, \ - Type, Value); \ - YYFPRINTF (stderr, "\n"); \ - } \ -} while (YYID (0)) - - -/*--------------------------------. -| Print this symbol on YYOUTPUT. | -`--------------------------------*/ - -/*ARGSUSED*/ -#if (defined __STDC__ || defined __C99__FUNC__ \ - || defined __cplusplus || defined _MSC_VER) -static void -yy_symbol_value_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep) -#else -static void -yy_symbol_value_print (yyoutput, yytype, yyvaluep) - FILE *yyoutput; - int yytype; - YYSTYPE const * const yyvaluep; -#endif -{ - if (!yyvaluep) - return; -# ifdef YYPRINT - if (yytype < YYNTOKENS) - YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep); -# else - YYUSE (yyoutput); -# endif - switch (yytype) - { - default: - break; - } -} - - -/*--------------------------------. -| Print this symbol on YYOUTPUT. | -`--------------------------------*/ - -#if (defined __STDC__ || defined __C99__FUNC__ \ - || defined __cplusplus || defined _MSC_VER) -static void -yy_symbol_print (FILE *yyoutput, int yytype, YYSTYPE const * const yyvaluep) -#else -static void -yy_symbol_print (yyoutput, yytype, yyvaluep) - FILE *yyoutput; - int yytype; - YYSTYPE const * const yyvaluep; -#endif -{ - if (yytype < YYNTOKENS) - YYFPRINTF (yyoutput, "token %s (", yytname[yytype]); - else - YYFPRINTF (yyoutput, "nterm %s (", yytname[yytype]); - - yy_symbol_value_print (yyoutput, yytype, yyvaluep); - YYFPRINTF (yyoutput, ")"); -} - -/*------------------------------------------------------------------. -| yy_stack_print -- Print the state stack from its BOTTOM up to its | -| TOP (included). | -`------------------------------------------------------------------*/ - -#if (defined __STDC__ || defined __C99__FUNC__ \ - || defined __cplusplus || defined _MSC_VER) -static void -yy_stack_print (yytype_int16 *bottom, yytype_int16 *top) -#else -static void -yy_stack_print (bottom, top) - yytype_int16 *bottom; - yytype_int16 *top; -#endif -{ - YYFPRINTF (stderr, "Stack now"); - for (; bottom <= top; ++bottom) - YYFPRINTF (stderr, " %d", *bottom); - YYFPRINTF (stderr, "\n"); -} - -# define YY_STACK_PRINT(Bottom, Top) \ -do { \ - if (yydebug) \ - yy_stack_print ((Bottom), (Top)); \ -} while (YYID (0)) - - -/*------------------------------------------------. -| Report that the YYRULE is going to be reduced. | -`------------------------------------------------*/ - -#if (defined __STDC__ || defined __C99__FUNC__ \ - || defined __cplusplus || defined _MSC_VER) -static void -yy_reduce_print (YYSTYPE *yyvsp, int yyrule) -#else -static void -yy_reduce_print (yyvsp, yyrule) - YYSTYPE *yyvsp; - int yyrule; -#endif -{ - int yynrhs = yyr2[yyrule]; - int yyi; - unsigned long int yylno = yyrline[yyrule]; - YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n", - yyrule - 1, yylno); - /* The symbols being reduced. */ - for (yyi = 0; yyi < yynrhs; yyi++) - { - fprintf (stderr, " $%d = ", yyi + 1); - yy_symbol_print (stderr, yyrhs[yyprhs[yyrule] + yyi], - &(yyvsp[(yyi + 1) - (yynrhs)]) - ); - fprintf (stderr, "\n"); - } -} - -# define YY_REDUCE_PRINT(Rule) \ -do { \ - if (yydebug) \ - yy_reduce_print (yyvsp, Rule); \ -} while (YYID (0)) - -/* Nonzero means print parse trace. It is left uninitialized so that - multiple parsers can coexist. */ -int yydebug; -#else /* !YYDEBUG */ -# define YYDPRINTF(Args) -# define YY_SYMBOL_PRINT(Title, Type, Value, Location) -# define YY_STACK_PRINT(Bottom, Top) -# define YY_REDUCE_PRINT(Rule) -#endif /* !YYDEBUG */ - - -/* YYINITDEPTH -- initial size of the parser's stacks. */ -#ifndef YYINITDEPTH -# define YYINITDEPTH 200 -#endif - -/* YYMAXDEPTH -- maximum size the stacks can grow to (effective only - if the built-in stack extension method is used). - - Do not make this value too large; the results are undefined if - YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH) - evaluated with infinite-precision integer arithmetic. */ - -#ifndef YYMAXDEPTH -# define YYMAXDEPTH 10000 -#endif - - - -#if YYERROR_VERBOSE - -# ifndef yystrlen -# if defined __GLIBC__ && defined _STRING_H -# define yystrlen strlen -# else -/* Return the length of YYSTR. */ -#if (defined __STDC__ || defined __C99__FUNC__ \ - || defined __cplusplus || defined _MSC_VER) -static YYSIZE_T -yystrlen (const char *yystr) -#else -static YYSIZE_T -yystrlen (yystr) - const char *yystr; -#endif -{ - YYSIZE_T yylen; - for (yylen = 0; yystr[yylen]; yylen++) - continue; - return yylen; -} -# endif -# endif - -# ifndef yystpcpy -# if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE -# define yystpcpy stpcpy -# else -/* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in - YYDEST. */ -#if (defined __STDC__ || defined __C99__FUNC__ \ - || defined __cplusplus || defined _MSC_VER) -static char * -yystpcpy (char *yydest, const char *yysrc) -#else -static char * -yystpcpy (yydest, yysrc) - char *yydest; - const char *yysrc; -#endif -{ - char *yyd = yydest; - const char *yys = yysrc; - - while ((*yyd++ = *yys++) != '\0') - continue; - - return yyd - 1; -} -# endif -# endif - -# ifndef yytnamerr -/* Copy to YYRES the contents of YYSTR after stripping away unnecessary - quotes and backslashes, so that it's suitable for yyerror. The - heuristic is that double-quoting is unnecessary unless the string - contains an apostrophe, a comma, or backslash (other than - backslash-backslash). YYSTR is taken from yytname. If YYRES is - null, do not copy; instead, return the length of what the result - would have been. */ -static YYSIZE_T -yytnamerr (char *yyres, const char *yystr) -{ - if (*yystr == '"') - { - YYSIZE_T yyn = 0; - char const *yyp = yystr; - - for (;;) - switch (*++yyp) - { - case '\'': - case ',': - goto do_not_strip_quotes; - - case '\\': - if (*++yyp != '\\') - goto do_not_strip_quotes; - /* Fall through. */ - default: - if (yyres) - yyres[yyn] = *yyp; - yyn++; - break; - - case '"': - if (yyres) - yyres[yyn] = '\0'; - return yyn; - } - do_not_strip_quotes: ; - } - - if (! yyres) - return yystrlen (yystr); - - return yystpcpy (yyres, yystr) - yyres; -} -# endif - -/* Copy into YYRESULT an error message about the unexpected token - YYCHAR while in state YYSTATE. Return the number of bytes copied, - including the terminating null byte. If YYRESULT is null, do not - copy anything; just return the number of bytes that would be - copied. As a special case, return 0 if an ordinary "syntax error" - message will do. Return YYSIZE_MAXIMUM if overflow occurs during - size calculation. */ -static YYSIZE_T -yysyntax_error (char *yyresult, int yystate, int yychar) -{ - int yyn = yypact[yystate]; - - if (! (YYPACT_NINF < yyn && yyn <= YYLAST)) - return 0; - else - { - int yytype = YYTRANSLATE (yychar); - YYSIZE_T yysize0 = yytnamerr (0, yytname[yytype]); - YYSIZE_T yysize = yysize0; - YYSIZE_T yysize1; - int yysize_overflow = 0; - enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 }; - char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM]; - int yyx; - -# if 0 - /* This is so xgettext sees the translatable formats that are - constructed on the fly. */ - YY_("syntax error, unexpected %s"); - YY_("syntax error, unexpected %s, expecting %s"); - YY_("syntax error, unexpected %s, expecting %s or %s"); - YY_("syntax error, unexpected %s, expecting %s or %s or %s"); - YY_("syntax error, unexpected %s, expecting %s or %s or %s or %s"); -# endif - char *yyfmt; - char const *yyf; - static char const yyunexpected[] = "syntax error, unexpected %s"; - static char const yyexpecting[] = ", expecting %s"; - static char const yyor[] = " or %s"; - char yyformat[sizeof yyunexpected - + sizeof yyexpecting - 1 - + ((YYERROR_VERBOSE_ARGS_MAXIMUM - 2) - * (sizeof yyor - 1))]; - char const *yyprefix = yyexpecting; - - /* Start YYX at -YYN if negative to avoid negative indexes in - YYCHECK. */ - int yyxbegin = yyn < 0 ? -yyn : 0; - - /* Stay within bounds of both yycheck and yytname. */ - int yychecklim = YYLAST - yyn + 1; - int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS; - int yycount = 1; - - yyarg[0] = yytname[yytype]; - yyfmt = yystpcpy (yyformat, yyunexpected); - - for (yyx = yyxbegin; yyx < yyxend; ++yyx) - if (yycheck[yyx + yyn] == yyx && yyx != YYTERROR) - { - if (yycount == YYERROR_VERBOSE_ARGS_MAXIMUM) - { - yycount = 1; - yysize = yysize0; - yyformat[sizeof yyunexpected - 1] = '\0'; - break; - } - yyarg[yycount++] = yytname[yyx]; - yysize1 = yysize + yytnamerr (0, yytname[yyx]); - yysize_overflow |= (yysize1 < yysize); - yysize = yysize1; - yyfmt = yystpcpy (yyfmt, yyprefix); - yyprefix = yyor; - } - - yyf = YY_(yyformat); - yysize1 = yysize + yystrlen (yyf); - yysize_overflow |= (yysize1 < yysize); - yysize = yysize1; - - if (yysize_overflow) - return YYSIZE_MAXIMUM; - - if (yyresult) - { - /* Avoid sprintf, as that infringes on the user's name space. - Don't have undefined behavior even if the translation - produced a string with the wrong number of "%s"s. */ - char *yyp = yyresult; - int yyi = 0; - while ((*yyp = *yyf) != '\0') - { - if (*yyp == '%' && yyf[1] == 's' && yyi < yycount) - { - yyp += yytnamerr (yyp, yyarg[yyi++]); - yyf += 2; - } - else - { - yyp++; - yyf++; - } - } - } - return yysize; - } -} -#endif /* YYERROR_VERBOSE */ - - -/*-----------------------------------------------. -| Release the memory associated to this symbol. | -`-----------------------------------------------*/ - -/*ARGSUSED*/ -#if (defined __STDC__ || defined __C99__FUNC__ \ - || defined __cplusplus || defined _MSC_VER) -static void -yydestruct (const char *yymsg, int yytype, YYSTYPE *yyvaluep) -#else -static void -yydestruct (yymsg, yytype, yyvaluep) - const char *yymsg; - int yytype; - YYSTYPE *yyvaluep; -#endif -{ - YYUSE (yyvaluep); - - if (!yymsg) - yymsg = "Deleting"; - YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp); - - switch (yytype) - { - - default: - break; - } -} - - -/* Prevent warnings from -Wmissing-prototypes. */ - -#ifdef YYPARSE_PARAM -#if defined __STDC__ || defined __cplusplus -int yyparse (void *YYPARSE_PARAM); -#else -int yyparse (); -#endif -#else /* ! YYPARSE_PARAM */ -#if defined __STDC__ || defined __cplusplus -int yyparse (void); -#else -int yyparse (); -#endif -#endif /* ! YYPARSE_PARAM */ - - - -/* The look-ahead symbol. */ -int yychar; - -/* The semantic value of the look-ahead symbol. */ -YYSTYPE yylval; - -/* Number of syntax errors so far. */ -int yynerrs; - - - -/*----------. -| yyparse. | -`----------*/ - -#ifdef YYPARSE_PARAM -#if (defined __STDC__ || defined __C99__FUNC__ \ - || defined __cplusplus || defined _MSC_VER) -int -yyparse (void *YYPARSE_PARAM) -#else -int -yyparse (YYPARSE_PARAM) - void *YYPARSE_PARAM; -#endif -#else /* ! YYPARSE_PARAM */ -#if (defined __STDC__ || defined __C99__FUNC__ \ - || defined __cplusplus || defined _MSC_VER) -int -yyparse (void) -#else -int -yyparse () - -#endif -#endif -{ - - int yystate; - int yyn; - int yyresult; - /* Number of tokens to shift before error messages enabled. */ - int yyerrstatus; - /* Look-ahead token as an internal (translated) token number. */ - int yytoken = 0; -#if YYERROR_VERBOSE - /* Buffer for error messages, and its allocated size. */ - char yymsgbuf[128]; - char *yymsg = yymsgbuf; - YYSIZE_T yymsg_alloc = sizeof yymsgbuf; -#endif - - /* Three stacks and their tools: - `yyss': related to states, - `yyvs': related to semantic values, - `yyls': related to locations. - - Refer to the stacks thru separate pointers, to allow yyoverflow - to reallocate them elsewhere. */ - - /* The state stack. */ - yytype_int16 yyssa[YYINITDEPTH]; - yytype_int16 *yyss = yyssa; - yytype_int16 *yyssp; - - /* The semantic value stack. */ - YYSTYPE yyvsa[YYINITDEPTH]; - YYSTYPE *yyvs = yyvsa; - YYSTYPE *yyvsp; - - - -#define YYPOPSTACK(N) (yyvsp -= (N), yyssp -= (N)) - - YYSIZE_T yystacksize = YYINITDEPTH; - - /* The variables used to return semantic value and location from the - action routines. */ - YYSTYPE yyval; - - - /* The number of symbols on the RHS of the reduced rule. - Keep to zero when no symbol should be popped. */ - int yylen = 0; - - YYDPRINTF ((stderr, "Starting parse\n")); - - yystate = 0; - yyerrstatus = 0; - yynerrs = 0; - yychar = YYEMPTY; /* Cause a token to be read. */ - - /* Initialize stack pointers. - Waste one element of value and location stack - so that they stay on the same level as the state stack. - The wasted elements are never initialized. */ - - yyssp = yyss; - yyvsp = yyvs; - - goto yysetstate; - -/*------------------------------------------------------------. -| yynewstate -- Push a new state, which is found in yystate. | -`------------------------------------------------------------*/ - yynewstate: - /* In all cases, when you get here, the value and location stacks - have just been pushed. So pushing a state here evens the stacks. */ - yyssp++; - - yysetstate: - *yyssp = yystate; - - if (yyss + yystacksize - 1 <= yyssp) - { - /* Get the current used size of the three stacks, in elements. */ - YYSIZE_T yysize = yyssp - yyss + 1; - -#ifdef yyoverflow - { - /* Give user a chance to reallocate the stack. Use copies of - these so that the &'s don't force the real ones into - memory. */ - YYSTYPE *yyvs1 = yyvs; - yytype_int16 *yyss1 = yyss; - - - /* Each stack pointer address is followed by the size of the - data in use in that stack, in bytes. This used to be a - conditional around just the two extra args, but that might - be undefined if yyoverflow is a macro. */ - yyoverflow (YY_("memory exhausted"), - &yyss1, yysize * sizeof (*yyssp), - &yyvs1, yysize * sizeof (*yyvsp), - - &yystacksize); - - yyss = yyss1; - yyvs = yyvs1; - } -#else /* no yyoverflow */ -# ifndef YYSTACK_RELOCATE - goto yyexhaustedlab; -# else - /* Extend the stack our own way. */ - if (YYMAXDEPTH <= yystacksize) - goto yyexhaustedlab; - yystacksize *= 2; - if (YYMAXDEPTH < yystacksize) - yystacksize = YYMAXDEPTH; - - { - yytype_int16 *yyss1 = yyss; - union yyalloc *yyptr = - (union yyalloc *) YYSTACK_ALLOC (YYSTACK_BYTES (yystacksize)); - if (! yyptr) - goto yyexhaustedlab; - YYSTACK_RELOCATE (yyss); - YYSTACK_RELOCATE (yyvs); - -# undef YYSTACK_RELOCATE - if (yyss1 != yyssa) - YYSTACK_FREE (yyss1); - } -# endif -#endif /* no yyoverflow */ - - yyssp = yyss + yysize - 1; - yyvsp = yyvs + yysize - 1; - - - YYDPRINTF ((stderr, "Stack size increased to %lu\n", - (unsigned long int) yystacksize)); - - if (yyss + yystacksize - 1 <= yyssp) - YYABORT; - } - - YYDPRINTF ((stderr, "Entering state %d\n", yystate)); - - goto yybackup; - -/*-----------. -| yybackup. | -`-----------*/ -yybackup: - - /* Do appropriate processing given the current state. Read a - look-ahead token if we need one and don't already have one. */ - - /* First try to decide what to do without reference to look-ahead token. */ - yyn = yypact[yystate]; - if (yyn == YYPACT_NINF) - goto yydefault; - - /* Not known => get a look-ahead token if don't already have one. */ - - /* YYCHAR is either YYEMPTY or YYEOF or a valid look-ahead symbol. */ - if (yychar == YYEMPTY) - { - YYDPRINTF ((stderr, "Reading a token: ")); - yychar = YYLEX; - } - - if (yychar <= YYEOF) - { - yychar = yytoken = YYEOF; - YYDPRINTF ((stderr, "Now at end of input.\n")); - } - else - { - yytoken = YYTRANSLATE (yychar); - YY_SYMBOL_PRINT ("Next token is", yytoken, &yylval, &yylloc); - } - - /* If the proper action on seeing token YYTOKEN is to reduce or to - detect an error, take that action. */ - yyn += yytoken; - if (yyn < 0 || YYLAST < yyn || yycheck[yyn] != yytoken) - goto yydefault; - yyn = yytable[yyn]; - if (yyn <= 0) - { - if (yyn == 0 || yyn == YYTABLE_NINF) - goto yyerrlab; - yyn = -yyn; - goto yyreduce; - } - - if (yyn == YYFINAL) - YYACCEPT; - - /* Count tokens shifted since error; after three, turn off error - status. */ - if (yyerrstatus) - yyerrstatus--; - - /* Shift the look-ahead token. */ - YY_SYMBOL_PRINT ("Shifting", yytoken, &yylval, &yylloc); - - /* Discard the shifted token unless it is eof. */ - if (yychar != YYEOF) - yychar = YYEMPTY; - - yystate = yyn; - *++yyvsp = yylval; - - goto yynewstate; - - -/*-----------------------------------------------------------. -| yydefault -- do the default action for the current state. | -`-----------------------------------------------------------*/ -yydefault: - yyn = yydefact[yystate]; - if (yyn == 0) - goto yyerrlab; - goto yyreduce; - - -/*-----------------------------. -| yyreduce -- Do a reduction. | -`-----------------------------*/ -yyreduce: - /* yyn is the number of a rule to reduce with. */ - yylen = yyr2[yyn]; - - /* If YYLEN is nonzero, implement the default value of the action: - `$$ = $1'. - - Otherwise, the following line sets YYVAL to garbage. - This behavior is undocumented and Bison - users should not rely upon it. Assigning to YYVAL - unconditionally makes the parser a bit smaller, and it avoids a - GCC warning that YYVAL may be used uninitialized. */ - yyval = yyvsp[1-yylen]; - - - YY_REDUCE_PRINT (yyn); - switch (yyn) - { - case 4: -#line 109 "cc.y" - { - dodecl(xdecl, lastclass, lasttype, Z); - } - break; - - case 6: -#line 114 "cc.y" - { - lastdcl = T; - firstarg = S; - dodecl(xdecl, lastclass, lasttype, (yyvsp[(2) - (2)].node)); - if(lastdcl == T || lastdcl->etype != TFUNC) { - diag((yyvsp[(2) - (2)].node), "not a function"); - lastdcl = types[TFUNC]; - } - thisfn = lastdcl; - markdcl(); - firstdcl = dclstack; - argmark((yyvsp[(2) - (2)].node), 0); - } - break; - - case 7: -#line 128 "cc.y" - { - argmark((yyvsp[(2) - (4)].node), 1); - } - break; - - case 8: -#line 132 "cc.y" - { - Node *n; - - n = revertdcl(); - if(n) - (yyvsp[(6) - (6)].node) = new(OLIST, n, (yyvsp[(6) - (6)].node)); - if(!debug['a'] && !debug['Z']) - codgen((yyvsp[(6) - (6)].node), (yyvsp[(2) - (6)].node)); - } - break; - - case 9: -#line 144 "cc.y" - { - dodecl(xdecl, lastclass, lasttype, (yyvsp[(1) - (1)].node)); - } - break; - - case 10: -#line 148 "cc.y" - { - (yyvsp[(1) - (1)].node) = dodecl(xdecl, lastclass, lasttype, (yyvsp[(1) - (1)].node)); - } - break; - - case 11: -#line 152 "cc.y" - { - doinit((yyvsp[(1) - (4)].node)->sym, (yyvsp[(1) - (4)].node)->type, 0L, (yyvsp[(4) - (4)].node)); - } - break; - - case 14: -#line 160 "cc.y" - { - (yyval.node) = new(OIND, (yyvsp[(3) - (3)].node), Z); - (yyval.node)->garb = simpleg((yyvsp[(2) - (3)].lval)); - } - break; - - case 16: -#line 168 "cc.y" - { - (yyval.node) = (yyvsp[(2) - (3)].node); - } - break; - - case 17: -#line 172 "cc.y" - { - (yyval.node) = new(OFUNC, (yyvsp[(1) - (4)].node), (yyvsp[(3) - (4)].node)); - } - break; - - case 18: -#line 176 "cc.y" - { - (yyval.node) = new(OARRAY, (yyvsp[(1) - (4)].node), (yyvsp[(3) - (4)].node)); - } - break; - - case 19: -#line 185 "cc.y" - { - (yyval.node) = dodecl(adecl, lastclass, lasttype, Z); - } - break; - - case 20: -#line 189 "cc.y" - { - (yyval.node) = (yyvsp[(2) - (3)].node); - } - break; - - case 21: -#line 195 "cc.y" - { - dodecl(adecl, lastclass, lasttype, (yyvsp[(1) - (1)].node)); - (yyval.node) = Z; - } - break; - - case 22: -#line 200 "cc.y" - { - (yyvsp[(1) - (1)].node) = dodecl(adecl, lastclass, lasttype, (yyvsp[(1) - (1)].node)); - } - break; - - case 23: -#line 204 "cc.y" - { - int32 w; - - w = (yyvsp[(1) - (4)].node)->sym->type->width; - (yyval.node) = doinit((yyvsp[(1) - (4)].node)->sym, (yyvsp[(1) - (4)].node)->type, 0L, (yyvsp[(4) - (4)].node)); - (yyval.node) = contig((yyvsp[(1) - (4)].node)->sym, (yyval.node), w); - } - break; - - case 24: -#line 212 "cc.y" - { - (yyval.node) = (yyvsp[(1) - (3)].node); - if((yyvsp[(3) - (3)].node) != Z) { - (yyval.node) = (yyvsp[(3) - (3)].node); - if((yyvsp[(1) - (3)].node) != Z) - (yyval.node) = new(OLIST, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - } - break; - - case 27: -#line 229 "cc.y" - { - dodecl(pdecl, lastclass, lasttype, (yyvsp[(1) - (1)].node)); - } - break; - - case 29: -#line 239 "cc.y" - { - lasttype = (yyvsp[(1) - (1)].type); - } - break; - - case 31: -#line 244 "cc.y" - { - lasttype = (yyvsp[(2) - (2)].type); - } - break; - - case 33: -#line 250 "cc.y" - { - lastfield = 0; - edecl(CXXX, lasttype, S); - } - break; - - case 35: -#line 258 "cc.y" - { - dodecl(edecl, CXXX, lasttype, (yyvsp[(1) - (1)].node)); - } - break; - - case 37: -#line 265 "cc.y" - { - lastbit = 0; - firstbit = 1; - } - break; - - case 38: -#line 270 "cc.y" - { - (yyval.node) = new(OBIT, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 39: -#line 274 "cc.y" - { - (yyval.node) = new(OBIT, Z, (yyvsp[(2) - (2)].node)); - } - break; - - case 40: -#line 282 "cc.y" - { - (yyval.node) = (Z); - } - break; - - case 42: -#line 289 "cc.y" - { - (yyval.node) = new(OIND, (Z), Z); - (yyval.node)->garb = simpleg((yyvsp[(2) - (2)].lval)); - } - break; - - case 43: -#line 294 "cc.y" - { - (yyval.node) = new(OIND, (yyvsp[(3) - (3)].node), Z); - (yyval.node)->garb = simpleg((yyvsp[(2) - (3)].lval)); - } - break; - - case 46: -#line 303 "cc.y" - { - (yyval.node) = new(OFUNC, (yyvsp[(1) - (4)].node), (yyvsp[(3) - (4)].node)); - } - break; - - case 47: -#line 307 "cc.y" - { - (yyval.node) = new(OARRAY, (yyvsp[(1) - (4)].node), (yyvsp[(3) - (4)].node)); - } - break; - - case 48: -#line 313 "cc.y" - { - (yyval.node) = new(OFUNC, (Z), Z); - } - break; - - case 49: -#line 317 "cc.y" - { - (yyval.node) = new(OARRAY, (Z), (yyvsp[(2) - (3)].node)); - } - break; - - case 50: -#line 321 "cc.y" - { - (yyval.node) = (yyvsp[(2) - (3)].node); - } - break; - - case 52: -#line 328 "cc.y" - { - (yyval.node) = new(OINIT, invert((yyvsp[(2) - (3)].node)), Z); - } - break; - - case 53: -#line 334 "cc.y" - { - (yyval.node) = new(OARRAY, (yyvsp[(2) - (3)].node), Z); - } - break; - - case 54: -#line 338 "cc.y" - { - (yyval.node) = new(OELEM, Z, Z); - (yyval.node)->sym = (yyvsp[(2) - (2)].sym); - } - break; - - case 57: -#line 347 "cc.y" - { - (yyval.node) = new(OLIST, (yyvsp[(1) - (3)].node), (yyvsp[(2) - (3)].node)); - } - break; - - case 59: -#line 352 "cc.y" - { - (yyval.node) = new(OLIST, (yyvsp[(1) - (2)].node), (yyvsp[(2) - (2)].node)); - } - break; - - case 62: -#line 360 "cc.y" - { - (yyval.node) = new(OLIST, (yyvsp[(1) - (2)].node), (yyvsp[(2) - (2)].node)); - } - break; - - case 63: -#line 365 "cc.y" - { - (yyval.node) = Z; - } - break; - - case 64: -#line 369 "cc.y" - { - (yyval.node) = invert((yyvsp[(1) - (1)].node)); - } - break; - - case 66: -#line 377 "cc.y" - { - (yyval.node) = new(OPROTO, (yyvsp[(2) - (2)].node), Z); - (yyval.node)->type = (yyvsp[(1) - (2)].type); - } - break; - - case 67: -#line 382 "cc.y" - { - (yyval.node) = new(OPROTO, (yyvsp[(2) - (2)].node), Z); - (yyval.node)->type = (yyvsp[(1) - (2)].type); - } - break; - - case 68: -#line 387 "cc.y" - { - (yyval.node) = new(ODOTDOT, Z, Z); - } - break; - - case 69: -#line 391 "cc.y" - { - (yyval.node) = new(OLIST, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 70: -#line 397 "cc.y" - { - (yyval.node) = invert((yyvsp[(2) - (3)].node)); - // if($2 != Z) - // $$ = new(OLIST, $2, $$); - if((yyval.node) == Z) - (yyval.node) = new(OLIST, Z, Z); - } - break; - - case 71: -#line 406 "cc.y" - { - (yyval.node) = Z; - } - break; - - case 72: -#line 410 "cc.y" - { - (yyval.node) = new(OLIST, (yyvsp[(1) - (2)].node), (yyvsp[(2) - (2)].node)); - } - break; - - case 73: -#line 414 "cc.y" - { - (yyval.node) = new(OLIST, (yyvsp[(1) - (2)].node), (yyvsp[(2) - (2)].node)); - } - break; - - case 75: -#line 421 "cc.y" - { - (yyval.node) = new(OLIST, (yyvsp[(1) - (2)].node), (yyvsp[(2) - (2)].node)); - } - break; - - case 76: -#line 427 "cc.y" - { - (yyval.node) = new(OCASE, (yyvsp[(2) - (3)].node), Z); - } - break; - - case 77: -#line 431 "cc.y" - { - (yyval.node) = new(OCASE, Z, Z); - } - break; - - case 78: -#line 435 "cc.y" - { - (yyval.node) = new(OLABEL, dcllabel((yyvsp[(1) - (2)].sym), 1), Z); - } - break; - - case 79: -#line 441 "cc.y" - { - (yyval.node) = Z; - } - break; - - case 81: -#line 446 "cc.y" - { - (yyval.node) = new(OLIST, (yyvsp[(1) - (2)].node), (yyvsp[(2) - (2)].node)); - } - break; - - case 83: -#line 453 "cc.y" - { - (yyval.node) = (yyvsp[(2) - (2)].node); - } - break; - - case 85: -#line 459 "cc.y" - { - markdcl(); - } - break; - - case 86: -#line 463 "cc.y" - { - (yyval.node) = revertdcl(); - if((yyval.node)) - (yyval.node) = new(OLIST, (yyval.node), (yyvsp[(2) - (2)].node)); - else - (yyval.node) = (yyvsp[(2) - (2)].node); - } - break; - - case 87: -#line 471 "cc.y" - { - (yyval.node) = new(OIF, (yyvsp[(3) - (5)].node), new(OLIST, (yyvsp[(5) - (5)].node), Z)); - if((yyvsp[(5) - (5)].node) == Z) - warn((yyvsp[(3) - (5)].node), "empty if body"); - } - break; - - case 88: -#line 477 "cc.y" - { - (yyval.node) = new(OIF, (yyvsp[(3) - (7)].node), new(OLIST, (yyvsp[(5) - (7)].node), (yyvsp[(7) - (7)].node))); - if((yyvsp[(5) - (7)].node) == Z) - warn((yyvsp[(3) - (7)].node), "empty if body"); - if((yyvsp[(7) - (7)].node) == Z) - warn((yyvsp[(3) - (7)].node), "empty else body"); - } - break; - - case 89: -#line 484 "cc.y" - { markdcl(); } - break; - - case 90: -#line 485 "cc.y" - { - (yyval.node) = revertdcl(); - if((yyval.node)){ - if((yyvsp[(4) - (10)].node)) - (yyvsp[(4) - (10)].node) = new(OLIST, (yyval.node), (yyvsp[(4) - (10)].node)); - else - (yyvsp[(4) - (10)].node) = (yyval.node); - } - (yyval.node) = new(OFOR, new(OLIST, (yyvsp[(6) - (10)].node), new(OLIST, (yyvsp[(4) - (10)].node), (yyvsp[(8) - (10)].node))), (yyvsp[(10) - (10)].node)); - } - break; - - case 91: -#line 496 "cc.y" - { - (yyval.node) = new(OWHILE, (yyvsp[(3) - (5)].node), (yyvsp[(5) - (5)].node)); - } - break; - - case 92: -#line 500 "cc.y" - { - (yyval.node) = new(ODWHILE, (yyvsp[(5) - (7)].node), (yyvsp[(2) - (7)].node)); - } - break; - - case 93: -#line 504 "cc.y" - { - (yyval.node) = new(ORETURN, (yyvsp[(2) - (3)].node), Z); - (yyval.node)->type = thisfn->link; - } - break; - - case 94: -#line 509 "cc.y" - { - (yyval.node) = new(OCONST, Z, Z); - (yyval.node)->vconst = 0; - (yyval.node)->type = types[TINT]; - (yyvsp[(3) - (5)].node) = new(OSUB, (yyval.node), (yyvsp[(3) - (5)].node)); - - (yyval.node) = new(OCONST, Z, Z); - (yyval.node)->vconst = 0; - (yyval.node)->type = types[TINT]; - (yyvsp[(3) - (5)].node) = new(OSUB, (yyval.node), (yyvsp[(3) - (5)].node)); - - (yyval.node) = new(OSWITCH, (yyvsp[(3) - (5)].node), (yyvsp[(5) - (5)].node)); - } - break; - - case 95: -#line 523 "cc.y" - { - (yyval.node) = new(OBREAK, Z, Z); - } - break; - - case 96: -#line 527 "cc.y" - { - (yyval.node) = new(OCONTINUE, Z, Z); - } - break; - - case 97: -#line 531 "cc.y" - { - (yyval.node) = new(OGOTO, dcllabel((yyvsp[(2) - (3)].sym), 0), Z); - } - break; - - case 98: -#line 535 "cc.y" - { - (yyval.node) = new(OUSED, (yyvsp[(3) - (5)].node), Z); - } - break; - - case 99: -#line 539 "cc.y" - { - (yyval.node) = new(OPREFETCH, (yyvsp[(3) - (5)].node), Z); - } - break; - - case 100: -#line 543 "cc.y" - { - (yyval.node) = new(OSET, (yyvsp[(3) - (5)].node), Z); - } - break; - - case 101: -#line 548 "cc.y" - { - (yyval.node) = Z; - } - break; - - case 103: -#line 554 "cc.y" - { - (yyval.node) = Z; - } - break; - - case 105: -#line 561 "cc.y" - { - (yyval.node) = new(OCAST, (yyvsp[(1) - (1)].node), Z); - (yyval.node)->type = types[TLONG]; - } - break; - - case 107: -#line 569 "cc.y" - { - (yyval.node) = new(OCOMMA, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 109: -#line 576 "cc.y" - { - (yyval.node) = new(OMUL, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 110: -#line 580 "cc.y" - { - (yyval.node) = new(ODIV, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 111: -#line 584 "cc.y" - { - (yyval.node) = new(OMOD, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 112: -#line 588 "cc.y" - { - (yyval.node) = new(OADD, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 113: -#line 592 "cc.y" - { - (yyval.node) = new(OSUB, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 114: -#line 596 "cc.y" - { - (yyval.node) = new(OASHR, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 115: -#line 600 "cc.y" - { - (yyval.node) = new(OASHL, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 116: -#line 604 "cc.y" - { - (yyval.node) = new(OLT, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 117: -#line 608 "cc.y" - { - (yyval.node) = new(OGT, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 118: -#line 612 "cc.y" - { - (yyval.node) = new(OLE, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 119: -#line 616 "cc.y" - { - (yyval.node) = new(OGE, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 120: -#line 620 "cc.y" - { - (yyval.node) = new(OEQ, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 121: -#line 624 "cc.y" - { - (yyval.node) = new(ONE, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 122: -#line 628 "cc.y" - { - (yyval.node) = new(OAND, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 123: -#line 632 "cc.y" - { - (yyval.node) = new(OXOR, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 124: -#line 636 "cc.y" - { - (yyval.node) = new(OOR, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 125: -#line 640 "cc.y" - { - (yyval.node) = new(OANDAND, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 126: -#line 644 "cc.y" - { - (yyval.node) = new(OOROR, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 127: -#line 648 "cc.y" - { - (yyval.node) = new(OCOND, (yyvsp[(1) - (5)].node), new(OLIST, (yyvsp[(3) - (5)].node), (yyvsp[(5) - (5)].node))); - } - break; - - case 128: -#line 652 "cc.y" - { - (yyval.node) = new(OAS, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 129: -#line 656 "cc.y" - { - (yyval.node) = new(OASADD, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 130: -#line 660 "cc.y" - { - (yyval.node) = new(OASSUB, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 131: -#line 664 "cc.y" - { - (yyval.node) = new(OASMUL, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 132: -#line 668 "cc.y" - { - (yyval.node) = new(OASDIV, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 133: -#line 672 "cc.y" - { - (yyval.node) = new(OASMOD, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 134: -#line 676 "cc.y" - { - (yyval.node) = new(OASASHL, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 135: -#line 680 "cc.y" - { - (yyval.node) = new(OASASHR, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 136: -#line 684 "cc.y" - { - (yyval.node) = new(OASAND, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 137: -#line 688 "cc.y" - { - (yyval.node) = new(OASXOR, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 138: -#line 692 "cc.y" - { - (yyval.node) = new(OASOR, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 140: -#line 699 "cc.y" - { - (yyval.node) = new(OCAST, (yyvsp[(5) - (5)].node), Z); - dodecl(NODECL, CXXX, (yyvsp[(2) - (5)].type), (yyvsp[(3) - (5)].node)); - (yyval.node)->type = lastdcl; - (yyval.node)->xcast = 1; - } - break; - - case 141: -#line 706 "cc.y" - { - (yyval.node) = new(OSTRUCT, (yyvsp[(6) - (7)].node), Z); - dodecl(NODECL, CXXX, (yyvsp[(2) - (7)].type), (yyvsp[(3) - (7)].node)); - (yyval.node)->type = lastdcl; - } - break; - - case 143: -#line 715 "cc.y" - { - (yyval.node) = new(OIND, (yyvsp[(2) - (2)].node), Z); - } - break; - - case 144: -#line 719 "cc.y" - { - (yyval.node) = new(OADDR, (yyvsp[(2) - (2)].node), Z); - } - break; - - case 145: -#line 723 "cc.y" - { - (yyval.node) = new(OPOS, (yyvsp[(2) - (2)].node), Z); - } - break; - - case 146: -#line 727 "cc.y" - { - (yyval.node) = new(ONEG, (yyvsp[(2) - (2)].node), Z); - } - break; - - case 147: -#line 731 "cc.y" - { - (yyval.node) = new(ONOT, (yyvsp[(2) - (2)].node), Z); - } - break; - - case 148: -#line 735 "cc.y" - { - (yyval.node) = new(OCOM, (yyvsp[(2) - (2)].node), Z); - } - break; - - case 149: -#line 739 "cc.y" - { - (yyval.node) = new(OPREINC, (yyvsp[(2) - (2)].node), Z); - } - break; - - case 150: -#line 743 "cc.y" - { - (yyval.node) = new(OPREDEC, (yyvsp[(2) - (2)].node), Z); - } - break; - - case 151: -#line 747 "cc.y" - { - (yyval.node) = new(OSIZE, (yyvsp[(2) - (2)].node), Z); - } - break; - - case 152: -#line 751 "cc.y" - { - (yyval.node) = new(OSIGN, (yyvsp[(2) - (2)].node), Z); - } - break; - - case 153: -#line 757 "cc.y" - { - (yyval.node) = (yyvsp[(2) - (3)].node); - } - break; - - case 154: -#line 761 "cc.y" - { - (yyval.node) = new(OSIZE, Z, Z); - dodecl(NODECL, CXXX, (yyvsp[(3) - (5)].type), (yyvsp[(4) - (5)].node)); - (yyval.node)->type = lastdcl; - } - break; - - case 155: -#line 767 "cc.y" - { - (yyval.node) = new(OSIGN, Z, Z); - dodecl(NODECL, CXXX, (yyvsp[(3) - (5)].type), (yyvsp[(4) - (5)].node)); - (yyval.node)->type = lastdcl; - } - break; - - case 156: -#line 773 "cc.y" - { - (yyval.node) = new(OFUNC, (yyvsp[(1) - (4)].node), Z); - if((yyvsp[(1) - (4)].node)->op == ONAME) - if((yyvsp[(1) - (4)].node)->type == T) - dodecl(xdecl, CXXX, types[TINT], (yyval.node)); - (yyval.node)->right = invert((yyvsp[(3) - (4)].node)); - } - break; - - case 157: -#line 781 "cc.y" - { - (yyval.node) = new(OIND, new(OADD, (yyvsp[(1) - (4)].node), (yyvsp[(3) - (4)].node)), Z); - } - break; - - case 158: -#line 785 "cc.y" - { - (yyval.node) = new(ODOT, new(OIND, (yyvsp[(1) - (3)].node), Z), Z); - (yyval.node)->sym = (yyvsp[(3) - (3)].sym); - } - break; - - case 159: -#line 790 "cc.y" - { - (yyval.node) = new(ODOT, (yyvsp[(1) - (3)].node), Z); - (yyval.node)->sym = (yyvsp[(3) - (3)].sym); - } - break; - - case 160: -#line 795 "cc.y" - { - (yyval.node) = new(OPOSTINC, (yyvsp[(1) - (2)].node), Z); - } - break; - - case 161: -#line 799 "cc.y" - { - (yyval.node) = new(OPOSTDEC, (yyvsp[(1) - (2)].node), Z); - } - break; - - case 163: -#line 804 "cc.y" - { - (yyval.node) = new(OCONST, Z, Z); - (yyval.node)->type = types[TINT]; - (yyval.node)->vconst = (yyvsp[(1) - (1)].vval); - (yyval.node)->cstring = strdup(symb); - } - break; - - case 164: -#line 811 "cc.y" - { - (yyval.node) = new(OCONST, Z, Z); - (yyval.node)->type = types[TLONG]; - (yyval.node)->vconst = (yyvsp[(1) - (1)].vval); - (yyval.node)->cstring = strdup(symb); - } - break; - - case 165: -#line 818 "cc.y" - { - (yyval.node) = new(OCONST, Z, Z); - (yyval.node)->type = types[TUINT]; - (yyval.node)->vconst = (yyvsp[(1) - (1)].vval); - (yyval.node)->cstring = strdup(symb); - } - break; - - case 166: -#line 825 "cc.y" - { - (yyval.node) = new(OCONST, Z, Z); - (yyval.node)->type = types[TULONG]; - (yyval.node)->vconst = (yyvsp[(1) - (1)].vval); - (yyval.node)->cstring = strdup(symb); - } - break; - - case 167: -#line 832 "cc.y" - { - (yyval.node) = new(OCONST, Z, Z); - (yyval.node)->type = types[TDOUBLE]; - (yyval.node)->fconst = (yyvsp[(1) - (1)].dval); - (yyval.node)->cstring = strdup(symb); - } - break; - - case 168: -#line 839 "cc.y" - { - (yyval.node) = new(OCONST, Z, Z); - (yyval.node)->type = types[TFLOAT]; - (yyval.node)->fconst = (yyvsp[(1) - (1)].dval); - (yyval.node)->cstring = strdup(symb); - } - break; - - case 169: -#line 846 "cc.y" - { - (yyval.node) = new(OCONST, Z, Z); - (yyval.node)->type = types[TVLONG]; - (yyval.node)->vconst = (yyvsp[(1) - (1)].vval); - (yyval.node)->cstring = strdup(symb); - } - break; - - case 170: -#line 853 "cc.y" - { - (yyval.node) = new(OCONST, Z, Z); - (yyval.node)->type = types[TUVLONG]; - (yyval.node)->vconst = (yyvsp[(1) - (1)].vval); - (yyval.node)->cstring = strdup(symb); - } - break; - - case 173: -#line 864 "cc.y" - { - (yyval.node) = new(OSTRING, Z, Z); - (yyval.node)->type = typ(TARRAY, types[TCHAR]); - (yyval.node)->type->width = (yyvsp[(1) - (1)].sval).l + 1; - (yyval.node)->cstring = (yyvsp[(1) - (1)].sval).s; - (yyval.node)->sym = symstring; - (yyval.node)->etype = TARRAY; - (yyval.node)->class = CSTATIC; - } - break; - - case 174: -#line 874 "cc.y" - { - char *s; - int n; - - n = (yyvsp[(1) - (2)].node)->type->width - 1; - s = alloc(n+(yyvsp[(2) - (2)].sval).l+MAXALIGN); - - memcpy(s, (yyvsp[(1) - (2)].node)->cstring, n); - memcpy(s+n, (yyvsp[(2) - (2)].sval).s, (yyvsp[(2) - (2)].sval).l); - s[n+(yyvsp[(2) - (2)].sval).l] = 0; - - (yyval.node) = (yyvsp[(1) - (2)].node); - (yyval.node)->type->width += (yyvsp[(2) - (2)].sval).l; - (yyval.node)->cstring = s; - } - break; - - case 175: -#line 892 "cc.y" - { - (yyval.node) = new(OLSTRING, Z, Z); - (yyval.node)->type = typ(TARRAY, types[TRUNE]); - (yyval.node)->type->width = (yyvsp[(1) - (1)].sval).l + sizeof(TRune); - (yyval.node)->rstring = (TRune*)(yyvsp[(1) - (1)].sval).s; - (yyval.node)->sym = symstring; - (yyval.node)->etype = TARRAY; - (yyval.node)->class = CSTATIC; - } - break; - - case 176: -#line 902 "cc.y" - { - char *s; - int n; - - n = (yyvsp[(1) - (2)].node)->type->width - sizeof(TRune); - s = alloc(n+(yyvsp[(2) - (2)].sval).l+MAXALIGN); - - memcpy(s, (yyvsp[(1) - (2)].node)->rstring, n); - memcpy(s+n, (yyvsp[(2) - (2)].sval).s, (yyvsp[(2) - (2)].sval).l); - *(TRune*)(s+n+(yyvsp[(2) - (2)].sval).l) = 0; - - (yyval.node) = (yyvsp[(1) - (2)].node); - (yyval.node)->type->width += (yyvsp[(2) - (2)].sval).l; - (yyval.node)->rstring = (TRune*)s; - } - break; - - case 177: -#line 919 "cc.y" - { - (yyval.node) = Z; - } - break; - - case 180: -#line 927 "cc.y" - { - (yyval.node) = new(OLIST, (yyvsp[(1) - (3)].node), (yyvsp[(3) - (3)].node)); - } - break; - - case 181: -#line 933 "cc.y" - { - (yyval.tyty).t1 = strf; - (yyval.tyty).t2 = strl; - (yyval.tyty).t3 = lasttype; - (yyval.tyty).c = lastclass; - strf = T; - strl = T; - lastbit = 0; - firstbit = 1; - lastclass = CXXX; - lasttype = T; - } - break; - - case 182: -#line 946 "cc.y" - { - (yyval.type) = strf; - strf = (yyvsp[(2) - (4)].tyty).t1; - strl = (yyvsp[(2) - (4)].tyty).t2; - lasttype = (yyvsp[(2) - (4)].tyty).t3; - lastclass = (yyvsp[(2) - (4)].tyty).c; - } - break; - - case 183: -#line 955 "cc.y" - { - lastclass = CXXX; - lasttype = types[TINT]; - } - break; - - case 185: -#line 963 "cc.y" - { - (yyval.tycl).t = (yyvsp[(1) - (1)].type); - (yyval.tycl).c = CXXX; - } - break; - - case 186: -#line 968 "cc.y" - { - (yyval.tycl).t = simplet((yyvsp[(1) - (1)].lval)); - (yyval.tycl).c = CXXX; - } - break; - - case 187: -#line 973 "cc.y" - { - (yyval.tycl).t = simplet((yyvsp[(1) - (1)].lval)); - (yyval.tycl).c = simplec((yyvsp[(1) - (1)].lval)); - (yyval.tycl).t = garbt((yyval.tycl).t, (yyvsp[(1) - (1)].lval)); - } - break; - - case 188: -#line 979 "cc.y" - { - (yyval.tycl).t = (yyvsp[(1) - (2)].type); - (yyval.tycl).c = simplec((yyvsp[(2) - (2)].lval)); - (yyval.tycl).t = garbt((yyval.tycl).t, (yyvsp[(2) - (2)].lval)); - if((yyvsp[(2) - (2)].lval) & ~BCLASS & ~BGARB) - diag(Z, "duplicate types given: %T and %Q", (yyvsp[(1) - (2)].type), (yyvsp[(2) - (2)].lval)); - } - break; - - case 189: -#line 987 "cc.y" - { - (yyval.tycl).t = simplet(typebitor((yyvsp[(1) - (2)].lval), (yyvsp[(2) - (2)].lval))); - (yyval.tycl).c = simplec((yyvsp[(2) - (2)].lval)); - (yyval.tycl).t = garbt((yyval.tycl).t, (yyvsp[(2) - (2)].lval)); - } - break; - - case 190: -#line 993 "cc.y" - { - (yyval.tycl).t = (yyvsp[(2) - (3)].type); - (yyval.tycl).c = simplec((yyvsp[(1) - (3)].lval)); - (yyval.tycl).t = garbt((yyval.tycl).t, (yyvsp[(1) - (3)].lval)|(yyvsp[(3) - (3)].lval)); - } - break; - - case 191: -#line 999 "cc.y" - { - (yyval.tycl).t = simplet((yyvsp[(2) - (2)].lval)); - (yyval.tycl).c = simplec((yyvsp[(1) - (2)].lval)); - (yyval.tycl).t = garbt((yyval.tycl).t, (yyvsp[(1) - (2)].lval)); - } - break; - - case 192: -#line 1005 "cc.y" - { - (yyval.tycl).t = simplet(typebitor((yyvsp[(2) - (3)].lval), (yyvsp[(3) - (3)].lval))); - (yyval.tycl).c = simplec((yyvsp[(1) - (3)].lval)|(yyvsp[(3) - (3)].lval)); - (yyval.tycl).t = garbt((yyval.tycl).t, (yyvsp[(1) - (3)].lval)|(yyvsp[(3) - (3)].lval)); - } - break; - - case 193: -#line 1013 "cc.y" - { - (yyval.type) = (yyvsp[(1) - (1)].tycl).t; - if((yyvsp[(1) - (1)].tycl).c != CXXX) - diag(Z, "illegal combination of class 4: %s", cnames[(yyvsp[(1) - (1)].tycl).c]); - } - break; - - case 194: -#line 1021 "cc.y" - { - lasttype = (yyvsp[(1) - (1)].tycl).t; - lastclass = (yyvsp[(1) - (1)].tycl).c; - } - break; - - case 195: -#line 1028 "cc.y" - { - dotag((yyvsp[(2) - (2)].sym), TSTRUCT, 0); - (yyval.type) = (yyvsp[(2) - (2)].sym)->suetag; - } - break; - - case 196: -#line 1033 "cc.y" - { - dotag((yyvsp[(2) - (2)].sym), TSTRUCT, autobn); - } - break; - - case 197: -#line 1037 "cc.y" - { - (yyval.type) = (yyvsp[(2) - (4)].sym)->suetag; - if((yyval.type)->link != T) - diag(Z, "redeclare tag: %s", (yyvsp[(2) - (4)].sym)->name); - (yyval.type)->link = (yyvsp[(4) - (4)].type); - sualign((yyval.type)); - } - break; - - case 198: -#line 1045 "cc.y" - { - diag(Z, "struct must have tag"); - taggen++; - sprint(symb, "_%d_", taggen); - (yyval.type) = dotag(lookup(), TSTRUCT, autobn); - (yyval.type)->link = (yyvsp[(2) - (2)].type); - sualign((yyval.type)); - } - break; - - case 199: -#line 1054 "cc.y" - { - dotag((yyvsp[(2) - (2)].sym), TUNION, 0); - (yyval.type) = (yyvsp[(2) - (2)].sym)->suetag; - } - break; - - case 200: -#line 1059 "cc.y" - { - dotag((yyvsp[(2) - (2)].sym), TUNION, autobn); - } - break; - - case 201: -#line 1063 "cc.y" - { - (yyval.type) = (yyvsp[(2) - (4)].sym)->suetag; - if((yyval.type)->link != T) - diag(Z, "redeclare tag: %s", (yyvsp[(2) - (4)].sym)->name); - (yyval.type)->link = (yyvsp[(4) - (4)].type); - sualign((yyval.type)); - } - break; - - case 202: -#line 1071 "cc.y" - { - taggen++; - sprint(symb, "_%d_", taggen); - (yyval.type) = dotag(lookup(), TUNION, autobn); - (yyval.type)->link = (yyvsp[(2) - (2)].type); - sualign((yyval.type)); - } - break; - - case 203: -#line 1079 "cc.y" - { - dotag((yyvsp[(2) - (2)].sym), TENUM, 0); - (yyval.type) = (yyvsp[(2) - (2)].sym)->suetag; - if((yyval.type)->link == T) - (yyval.type)->link = types[TINT]; - (yyval.type) = (yyval.type)->link; - } - break; - - case 204: -#line 1087 "cc.y" - { - dotag((yyvsp[(2) - (2)].sym), TENUM, autobn); - } - break; - - case 205: -#line 1091 "cc.y" - { - en.tenum = T; - en.cenum = T; - } - break; - - case 206: -#line 1096 "cc.y" - { - (yyval.type) = (yyvsp[(2) - (7)].sym)->suetag; - if((yyval.type)->link != T) - diag(Z, "redeclare tag: %s", (yyvsp[(2) - (7)].sym)->name); - if(en.tenum == T) { - diag(Z, "enum type ambiguous: %s", (yyvsp[(2) - (7)].sym)->name); - en.tenum = types[TINT]; - } - (yyval.type)->link = en.tenum; - (yyval.type) = en.tenum; - } - break; - - case 207: -#line 1108 "cc.y" - { - en.tenum = T; - en.cenum = T; - } - break; - - case 208: -#line 1113 "cc.y" - { - (yyval.type) = en.tenum; - } - break; - - case 209: -#line 1117 "cc.y" - { - (yyval.type) = tcopy((yyvsp[(1) - (1)].sym)->type); - } - break; - - case 211: -#line 1124 "cc.y" - { - (yyval.lval) = typebitor((yyvsp[(1) - (2)].lval), (yyvsp[(2) - (2)].lval)); - } - break; - - case 212: -#line 1129 "cc.y" - { - (yyval.lval) = 0; - } - break; - - case 213: -#line 1133 "cc.y" - { - (yyval.lval) = typebitor((yyvsp[(1) - (2)].lval), (yyvsp[(2) - (2)].lval)); - } - break; - - case 218: -#line 1145 "cc.y" - { - (yyval.lval) = typebitor((yyvsp[(1) - (2)].lval), (yyvsp[(2) - (2)].lval)); - } - break; - - case 221: -#line 1155 "cc.y" - { - doenum((yyvsp[(1) - (1)].sym), Z); - } - break; - - case 222: -#line 1159 "cc.y" - { - doenum((yyvsp[(1) - (3)].sym), (yyvsp[(3) - (3)].node)); - } - break; - - case 225: -#line 1166 "cc.y" - { (yyval.lval) = BCHAR; } - break; - - case 226: -#line 1167 "cc.y" - { (yyval.lval) = BSHORT; } - break; - - case 227: -#line 1168 "cc.y" - { (yyval.lval) = BINT; } - break; - - case 228: -#line 1169 "cc.y" - { (yyval.lval) = BLONG; } - break; - - case 229: -#line 1170 "cc.y" - { (yyval.lval) = BSIGNED; } - break; - - case 230: -#line 1171 "cc.y" - { (yyval.lval) = BUNSIGNED; } - break; - - case 231: -#line 1172 "cc.y" - { (yyval.lval) = BFLOAT; } - break; - - case 232: -#line 1173 "cc.y" - { (yyval.lval) = BDOUBLE; } - break; - - case 233: -#line 1174 "cc.y" - { (yyval.lval) = BVOID; } - break; - - case 234: -#line 1177 "cc.y" - { (yyval.lval) = BAUTO; } - break; - - case 235: -#line 1178 "cc.y" - { (yyval.lval) = BSTATIC; } - break; - - case 236: -#line 1179 "cc.y" - { (yyval.lval) = BEXTERN; } - break; - - case 237: -#line 1180 "cc.y" - { (yyval.lval) = BTYPEDEF; } - break; - - case 238: -#line 1181 "cc.y" - { (yyval.lval) = BTYPESTR; } - break; - - case 239: -#line 1182 "cc.y" - { (yyval.lval) = BREGISTER; } - break; - - case 240: -#line 1183 "cc.y" - { (yyval.lval) = 0; } - break; - - case 241: -#line 1186 "cc.y" - { (yyval.lval) = BCONSTNT; } - break; - - case 242: -#line 1187 "cc.y" - { (yyval.lval) = BVOLATILE; } - break; - - case 243: -#line 1188 "cc.y" - { (yyval.lval) = 0; } - break; - - case 244: -#line 1192 "cc.y" - { - (yyval.node) = new(ONAME, Z, Z); - if((yyvsp[(1) - (1)].sym)->class == CLOCAL) - (yyvsp[(1) - (1)].sym) = mkstatic((yyvsp[(1) - (1)].sym)); - (yyval.node)->sym = (yyvsp[(1) - (1)].sym); - (yyval.node)->type = (yyvsp[(1) - (1)].sym)->type; - (yyval.node)->etype = TVOID; - if((yyval.node)->type != T) - (yyval.node)->etype = (yyval.node)->type->etype; - (yyval.node)->xoffset = (yyvsp[(1) - (1)].sym)->offset; - (yyval.node)->class = (yyvsp[(1) - (1)].sym)->class; - (yyvsp[(1) - (1)].sym)->aused = 1; - } - break; - - case 245: -#line 1207 "cc.y" - { - (yyval.node) = new(ONAME, Z, Z); - (yyval.node)->sym = (yyvsp[(1) - (1)].sym); - (yyval.node)->type = (yyvsp[(1) - (1)].sym)->type; - (yyval.node)->etype = TVOID; - if((yyval.node)->type != T) - (yyval.node)->etype = (yyval.node)->type->etype; - (yyval.node)->xoffset = (yyvsp[(1) - (1)].sym)->offset; - (yyval.node)->class = (yyvsp[(1) - (1)].sym)->class; - } - break; - - -/* Line 1267 of yacc.c. */ -#line 3607 "y.tab.c" - default: break; - } - YY_SYMBOL_PRINT ("-> $$ =", yyr1[yyn], &yyval, &yyloc); - - YYPOPSTACK (yylen); - yylen = 0; - YY_STACK_PRINT (yyss, yyssp); - - *++yyvsp = yyval; - - - /* Now `shift' the result of the reduction. Determine what state - that goes to, based on the state we popped back to and the rule - number reduced by. */ - - yyn = yyr1[yyn]; - - yystate = yypgoto[yyn - YYNTOKENS] + *yyssp; - if (0 <= yystate && yystate <= YYLAST && yycheck[yystate] == *yyssp) - yystate = yytable[yystate]; - else - yystate = yydefgoto[yyn - YYNTOKENS]; - - goto yynewstate; - - -/*------------------------------------. -| yyerrlab -- here on detecting error | -`------------------------------------*/ -yyerrlab: - /* If not already recovering from an error, report this error. */ - if (!yyerrstatus) - { - ++yynerrs; -#if ! YYERROR_VERBOSE - yyerror (YY_("syntax error")); -#else - { - YYSIZE_T yysize = yysyntax_error (0, yystate, yychar); - if (yymsg_alloc < yysize && yymsg_alloc < YYSTACK_ALLOC_MAXIMUM) - { - YYSIZE_T yyalloc = 2 * yysize; - if (! (yysize <= yyalloc && yyalloc <= YYSTACK_ALLOC_MAXIMUM)) - yyalloc = YYSTACK_ALLOC_MAXIMUM; - if (yymsg != yymsgbuf) - YYSTACK_FREE (yymsg); - yymsg = (char *) YYSTACK_ALLOC (yyalloc); - if (yymsg) - yymsg_alloc = yyalloc; - else - { - yymsg = yymsgbuf; - yymsg_alloc = sizeof yymsgbuf; - } - } - - if (0 < yysize && yysize <= yymsg_alloc) - { - (void) yysyntax_error (yymsg, yystate, yychar); - yyerror (yymsg); - } - else - { - yyerror (YY_("syntax error")); - if (yysize != 0) - goto yyexhaustedlab; - } - } -#endif - } - - - - if (yyerrstatus == 3) - { - /* If just tried and failed to reuse look-ahead token after an - error, discard it. */ - - if (yychar <= YYEOF) - { - /* Return failure if at end of input. */ - if (yychar == YYEOF) - YYABORT; - } - else - { - yydestruct ("Error: discarding", - yytoken, &yylval); - yychar = YYEMPTY; - } - } - - /* Else will try to reuse look-ahead token after shifting the error - token. */ - goto yyerrlab1; - - -/*---------------------------------------------------. -| yyerrorlab -- error raised explicitly by YYERROR. | -`---------------------------------------------------*/ -yyerrorlab: - - /* Pacify compilers like GCC when the user code never invokes - YYERROR and the label yyerrorlab therefore never appears in user - code. */ - if (/*CONSTCOND*/ 0) - goto yyerrorlab; - - /* Do not reclaim the symbols of the rule which action triggered - this YYERROR. */ - YYPOPSTACK (yylen); - yylen = 0; - YY_STACK_PRINT (yyss, yyssp); - yystate = *yyssp; - goto yyerrlab1; - - -/*-------------------------------------------------------------. -| yyerrlab1 -- common code for both syntax error and YYERROR. | -`-------------------------------------------------------------*/ -yyerrlab1: - yyerrstatus = 3; /* Each real token shifted decrements this. */ - - for (;;) - { - yyn = yypact[yystate]; - if (yyn != YYPACT_NINF) - { - yyn += YYTERROR; - if (0 <= yyn && yyn <= YYLAST && yycheck[yyn] == YYTERROR) - { - yyn = yytable[yyn]; - if (0 < yyn) - break; - } - } - - /* Pop the current state because it cannot handle the error token. */ - if (yyssp == yyss) - YYABORT; - - - yydestruct ("Error: popping", - yystos[yystate], yyvsp); - YYPOPSTACK (1); - yystate = *yyssp; - YY_STACK_PRINT (yyss, yyssp); - } - - if (yyn == YYFINAL) - YYACCEPT; - - *++yyvsp = yylval; - - - /* Shift the error token. */ - YY_SYMBOL_PRINT ("Shifting", yystos[yyn], yyvsp, yylsp); - - yystate = yyn; - goto yynewstate; - - -/*-------------------------------------. -| yyacceptlab -- YYACCEPT comes here. | -`-------------------------------------*/ -yyacceptlab: - yyresult = 0; - goto yyreturn; - -/*-----------------------------------. -| yyabortlab -- YYABORT comes here. | -`-----------------------------------*/ -yyabortlab: - yyresult = 1; - goto yyreturn; - -#ifndef yyoverflow -/*-------------------------------------------------. -| yyexhaustedlab -- memory exhaustion comes here. | -`-------------------------------------------------*/ -yyexhaustedlab: - yyerror (YY_("memory exhausted")); - yyresult = 2; - /* Fall through. */ -#endif - -yyreturn: - if (yychar != YYEOF && yychar != YYEMPTY) - yydestruct ("Cleanup: discarding lookahead", - yytoken, &yylval); - /* Do not reclaim the symbols of the rule which action triggered - this YYABORT or YYACCEPT. */ - YYPOPSTACK (yylen); - YY_STACK_PRINT (yyss, yyssp); - while (yyssp != yyss) - { - yydestruct ("Cleanup: popping", - yystos[*yyssp], yyvsp); - YYPOPSTACK (1); - } -#ifndef yyoverflow - if (yyss != yyssa) - YYSTACK_FREE (yyss); -#endif -#if YYERROR_VERBOSE - if (yymsg != yymsgbuf) - YYSTACK_FREE (yymsg); -#endif - /* Make sure YYID is used. */ - return YYID (yyresult); -} - - -#line 1220 "cc.y" - - diff --git a/src/cmd/cc/y.tab.h b/src/cmd/cc/y.tab.h deleted file mode 100644 index 32daca9b6..000000000 --- a/src/cmd/cc/y.tab.h +++ /dev/null @@ -1,230 +0,0 @@ -/* A Bison parser, made by GNU Bison 2.3. */ - -/* Skeleton interface for Bison's Yacc-like parsers in C - - Copyright (C) 1984, 1989, 1990, 2000, 2001, 2002, 2003, 2004, 2005, 2006 - Free Software Foundation, Inc. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 2, or (at your option) - any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 51 Franklin Street, Fifth Floor, - Boston, MA 02110-1301, USA. */ - -/* As a special exception, you may create a larger work that contains - part or all of the Bison parser skeleton and distribute that work - under terms of your choice, so long as that work isn't itself a - parser generator using the skeleton or a modified version thereof - as a parser skeleton. Alternatively, if you modify or redistribute - the parser skeleton itself, you may (at your option) remove this - special exception, which will cause the skeleton and the resulting - Bison output files to be licensed under the GNU General Public - License without this special exception. - - This special exception was added by the Free Software Foundation in - version 2.2 of Bison. */ - -/* Tokens. */ -#ifndef YYTOKENTYPE -# define YYTOKENTYPE - /* Put the tokens into the symbol table, so that GDB and other debuggers - know about them. */ - enum yytokentype { - LORE = 258, - LXORE = 259, - LANDE = 260, - LLSHE = 261, - LRSHE = 262, - LMDE = 263, - LDVE = 264, - LMLE = 265, - LME = 266, - LPE = 267, - LOROR = 268, - LANDAND = 269, - LNE = 270, - LEQ = 271, - LGE = 272, - LLE = 273, - LRSH = 274, - LLSH = 275, - LMG = 276, - LPP = 277, - LMM = 278, - LNAME = 279, - LTYPE = 280, - LFCONST = 281, - LDCONST = 282, - LCONST = 283, - LLCONST = 284, - LUCONST = 285, - LULCONST = 286, - LVLCONST = 287, - LUVLCONST = 288, - LSTRING = 289, - LLSTRING = 290, - LAUTO = 291, - LBREAK = 292, - LCASE = 293, - LCHAR = 294, - LCONTINUE = 295, - LDEFAULT = 296, - LDO = 297, - LDOUBLE = 298, - LELSE = 299, - LEXTERN = 300, - LFLOAT = 301, - LFOR = 302, - LGOTO = 303, - LIF = 304, - LINT = 305, - LLONG = 306, - LPREFETCH = 307, - LREGISTER = 308, - LRETURN = 309, - LSHORT = 310, - LSIZEOF = 311, - LUSED = 312, - LSTATIC = 313, - LSTRUCT = 314, - LSWITCH = 315, - LTYPEDEF = 316, - LTYPESTR = 317, - LUNION = 318, - LUNSIGNED = 319, - LWHILE = 320, - LVOID = 321, - LENUM = 322, - LSIGNED = 323, - LCONSTNT = 324, - LVOLATILE = 325, - LSET = 326, - LSIGNOF = 327, - LRESTRICT = 328, - LINLINE = 329 - }; -#endif -/* Tokens. */ -#define LORE 258 -#define LXORE 259 -#define LANDE 260 -#define LLSHE 261 -#define LRSHE 262 -#define LMDE 263 -#define LDVE 264 -#define LMLE 265 -#define LME 266 -#define LPE 267 -#define LOROR 268 -#define LANDAND 269 -#define LNE 270 -#define LEQ 271 -#define LGE 272 -#define LLE 273 -#define LRSH 274 -#define LLSH 275 -#define LMG 276 -#define LPP 277 -#define LMM 278 -#define LNAME 279 -#define LTYPE 280 -#define LFCONST 281 -#define LDCONST 282 -#define LCONST 283 -#define LLCONST 284 -#define LUCONST 285 -#define LULCONST 286 -#define LVLCONST 287 -#define LUVLCONST 288 -#define LSTRING 289 -#define LLSTRING 290 -#define LAUTO 291 -#define LBREAK 292 -#define LCASE 293 -#define LCHAR 294 -#define LCONTINUE 295 -#define LDEFAULT 296 -#define LDO 297 -#define LDOUBLE 298 -#define LELSE 299 -#define LEXTERN 300 -#define LFLOAT 301 -#define LFOR 302 -#define LGOTO 303 -#define LIF 304 -#define LINT 305 -#define LLONG 306 -#define LPREFETCH 307 -#define LREGISTER 308 -#define LRETURN 309 -#define LSHORT 310 -#define LSIZEOF 311 -#define LUSED 312 -#define LSTATIC 313 -#define LSTRUCT 314 -#define LSWITCH 315 -#define LTYPEDEF 316 -#define LTYPESTR 317 -#define LUNION 318 -#define LUNSIGNED 319 -#define LWHILE 320 -#define LVOID 321 -#define LENUM 322 -#define LSIGNED 323 -#define LCONSTNT 324 -#define LVOLATILE 325 -#define LSET 326 -#define LSIGNOF 327 -#define LRESTRICT 328 -#define LINLINE 329 - - - - -#if ! defined YYSTYPE && ! defined YYSTYPE_IS_DECLARED -typedef union YYSTYPE -#line 36 "cc.y" -{ - Node* node; - Sym* sym; - Type* type; - struct - { - Type* t; - uchar c; - } tycl; - struct - { - Type* t1; - Type* t2; - Type* t3; - uchar c; - } tyty; - struct - { - char* s; - int32 l; - } sval; - int32 lval; - double dval; - vlong vval; -} -/* Line 1529 of yacc.c. */ -#line 223 "y.tab.h" - YYSTYPE; -# define yystype YYSTYPE /* obsolescent; will be withdrawn */ -# define YYSTYPE_IS_DECLARED 1 -# define YYSTYPE_IS_TRIVIAL 1 -#endif - -extern YYSTYPE yylval; - diff --git a/src/cmd/cgo/main.go b/src/cmd/cgo/main.go index 0dc22dcd4..28ded816d 100644 --- a/src/cmd/cgo/main.go +++ b/src/cmd/cgo/main.go @@ -155,6 +155,7 @@ var fset = token.NewFileSet() var dynobj = flag.String("dynimport", "", "if non-empty, print dynamic import data for that file") var dynout = flag.String("dynout", "", "write -dynobj output to this file") +var dynpackage = flag.String("dynpackage", "main", "set Go package for dynobj output") var dynlinker = flag.Bool("dynlinker", false, "record dynamic linker information in dynimport mode") // These flags are for bootstrapping a new Go implementation, diff --git a/src/cmd/cgo/out.go b/src/cmd/cgo/out.go index d92bed9bf..78ecfd397 100644 --- a/src/cmd/cgo/out.go +++ b/src/cmd/cgo/out.go @@ -13,6 +13,7 @@ import ( "go/ast" "go/printer" "go/token" + "io" "os" "sort" "strings" @@ -23,8 +24,15 @@ var conf = printer.Config{Mode: printer.SourcePos, Tabwidth: 8} // writeDefs creates output files to be compiled by 6g, 6c, and gcc. // (The comments here say 6g and 6c but the code applies to the 8 and 5 tools too.) func (p *Package) writeDefs() { - fgo2 := creat(*objDir + "_cgo_gotypes.go") - fc := creat(*objDir + "_cgo_defun.c") + var fgo2, fc io.Writer + f := creat(*objDir + "_cgo_gotypes.go") + defer f.Close() + fgo2 = f + if *gccgo { + f := creat(*objDir + "_cgo_defun.c") + defer f.Close() + fc = f + } fm := creat(*objDir + "_cgo_main.c") var gccgoInit bytes.Buffer @@ -34,7 +42,7 @@ func (p *Package) writeDefs() { fmt.Fprintf(fflg, "_CGO_%s=%s\n", k, strings.Join(v, " ")) if k == "LDFLAGS" && !*gccgo { for _, arg := range v { - fmt.Fprintf(fc, "#pragma cgo_ldflag %q\n", arg) + fmt.Fprintf(fgo2, "//go:cgo_ldflag %q\n", arg) } } } @@ -88,7 +96,6 @@ func (p *Package) writeDefs() { if *gccgo { fmt.Fprint(fc, p.cPrologGccgo()) } else { - fmt.Fprint(fc, cProlog) fmt.Fprint(fgo2, goProlog) } @@ -104,42 +111,42 @@ func (p *Package) writeDefs() { if !cVars[n.C] { fmt.Fprintf(fm, "extern char %s[];\n", n.C) fmt.Fprintf(fm, "void *_cgohack_%s = %s;\n\n", n.C, n.C) - - if !*gccgo { - fmt.Fprintf(fc, "#pragma cgo_import_static %s\n", n.C) + if *gccgo { + fmt.Fprintf(fc, "extern byte *%s;\n", n.C) + } else { + fmt.Fprintf(fgo2, "//go:linkname __cgo_%s %s\n", n.C, n.C) + fmt.Fprintf(fgo2, "//go:cgo_import_static %s\n", n.C) + fmt.Fprintf(fgo2, "var __cgo_%s byte\n", n.C) } - - fmt.Fprintf(fc, "extern byte *%s;\n", n.C) - cVars[n.C] = true } - var amp string + var node ast.Node if n.Kind == "var" { - amp = "&" node = &ast.StarExpr{X: n.Type.Go} } else if n.Kind == "fpvar" { node = n.Type.Go - if *gccgo { - amp = "&" - } } else { panic(fmt.Errorf("invalid var kind %q", n.Kind)) } if *gccgo { fmt.Fprintf(fc, `extern void *%s __asm__("%s.%s");`, n.Mangle, gccgoSymbolPrefix, n.Mangle) - fmt.Fprintf(&gccgoInit, "\t%s = %s%s;\n", n.Mangle, amp, n.C) - } else { - fmt.Fprintf(fc, "#pragma dataflag NOPTR /* C pointer, not heap pointer */ \n") - fmt.Fprintf(fc, "void *·%s = %s%s;\n", n.Mangle, amp, n.C) + fmt.Fprintf(&gccgoInit, "\t%s = &%s;\n", n.Mangle, n.C) + fmt.Fprintf(fc, "\n") } - fmt.Fprintf(fc, "\n") fmt.Fprintf(fgo2, "var %s ", n.Mangle) conf.Fprint(fgo2, fset, node) + if !*gccgo { + fmt.Fprintf(fgo2, " = (") + conf.Fprint(fgo2, fset, node) + fmt.Fprintf(fgo2, ")(unsafe.Pointer(&__cgo_%s))", n.C) + } fmt.Fprintf(fgo2, "\n") } - fmt.Fprintf(fc, "\n") + if *gccgo { + fmt.Fprintf(fc, "\n") + } for _, key := range nameKeys(p.Name) { n := p.Name[key] @@ -169,9 +176,6 @@ func (p *Package) writeDefs() { fmt.Fprint(fc, init) fmt.Fprintln(fc, "}") } - - fgo2.Close() - fc.Close() } func dynimport(obj string) { @@ -184,13 +188,15 @@ func dynimport(obj string) { stdout = f } + fmt.Fprintf(stdout, "package %s\n", *dynpackage) + if f, err := elf.Open(obj); err == nil { if *dynlinker { // Emit the cgo_dynamic_linker line. if sec := f.Section(".interp"); sec != nil { if data, err := sec.Data(); err == nil && len(data) > 1 { // skip trailing \0 in data - fmt.Fprintf(stdout, "#pragma cgo_dynamic_linker %q\n", string(data[:len(data)-1])) + fmt.Fprintf(stdout, "//go:cgo_dynamic_linker %q\n", string(data[:len(data)-1])) } } } @@ -203,14 +209,14 @@ func dynimport(obj string) { if s.Version != "" { targ += "#" + s.Version } - fmt.Fprintf(stdout, "#pragma cgo_import_dynamic %s %s %q\n", s.Name, targ, s.Library) + fmt.Fprintf(stdout, "//go:cgo_import_dynamic %s %s %q\n", s.Name, targ, s.Library) } lib, err := f.ImportedLibraries() if err != nil { fatalf("cannot load imported libraries from ELF file %s: %v", obj, err) } for _, l := range lib { - fmt.Fprintf(stdout, "#pragma cgo_import_dynamic _ _ %q\n", l) + fmt.Fprintf(stdout, "//go:cgo_import_dynamic _ _ %q\n", l) } return } @@ -224,14 +230,14 @@ func dynimport(obj string) { if len(s) > 0 && s[0] == '_' { s = s[1:] } - fmt.Fprintf(stdout, "#pragma cgo_import_dynamic %s %s %q\n", s, s, "") + fmt.Fprintf(stdout, "//go:cgo_import_dynamic %s %s %q\n", s, s, "") } lib, err := f.ImportedLibraries() if err != nil { fatalf("cannot load imported libraries from Mach-O file %s: %v", obj, err) } for _, l := range lib { - fmt.Fprintf(stdout, "#pragma cgo_import_dynamic _ _ %q\n", l) + fmt.Fprintf(stdout, "//go:cgo_import_dynamic _ _ %q\n", l) } return } @@ -244,7 +250,7 @@ func dynimport(obj string) { for _, s := range sym { ss := strings.Split(s, ":") name := strings.Split(ss[0], "@")[0] - fmt.Fprintf(stdout, "#pragma cgo_import_dynamic %s %s %q\n", name, ss[0], strings.ToLower(ss[1])) + fmt.Fprintf(stdout, "//go:cgo_import_dynamic %s %s %q\n", name, ss[0], strings.ToLower(ss[1])) } return } @@ -304,7 +310,7 @@ func (p *Package) structType(n *Name) (string, int64) { return buf.String(), off } -func (p *Package) writeDefsFunc(fc, fgo2 *os.File, n *Name) { +func (p *Package) writeDefsFunc(fc, fgo2 io.Writer, n *Name) { name := n.Go gtype := n.FuncType.Go void := gtype.Results == nil || len(gtype.Results.List) == 0 @@ -397,10 +403,10 @@ func (p *Package) writeDefsFunc(fc, fgo2 *os.File, n *Name) { } // C wrapper calls into gcc, passing a pointer to the argument frame. - fmt.Fprintf(fc, "#pragma cgo_import_static %s\n", cname) - fmt.Fprintf(fc, "void %s(void*);\n", cname) - fmt.Fprintf(fc, "#pragma dataflag NOPTR\n") - fmt.Fprintf(fc, "void *·%s = %s;\n", cname, cname) + fmt.Fprintf(fgo2, "//go:cgo_import_static %s\n", cname) + fmt.Fprintf(fgo2, "//go:linkname __cgofn_%s %s\n", cname, cname) + fmt.Fprintf(fgo2, "var __cgofn_%s byte\n", cname) + fmt.Fprintf(fgo2, "var %s = unsafe.Pointer(&__cgofn_%s)\n", cname, cname) nret := 0 if !void { @@ -412,7 +418,6 @@ func (p *Package) writeDefsFunc(fc, fgo2 *os.File, n *Name) { } fmt.Fprint(fgo2, "\n") - fmt.Fprintf(fgo2, "var %s unsafe.Pointer\n", cname) conf.Fprint(fgo2, fset, d) fmt.Fprint(fgo2, " {\n") @@ -626,7 +631,7 @@ func (p *Package) packedAttribute() string { // Write out the various stubs we need to support functions exported // from Go so that they are callable from C. -func (p *Package) writeExports(fgo2, fc, fm *os.File) { +func (p *Package) writeExports(fgo2, fc, fm io.Writer) { fgcc := creat(*objDir + "_cgo_export.c") fgcch := creat(*objDir + "_cgo_export.h") @@ -763,15 +768,15 @@ func (p *Package) writeExports(fgo2, fc, fm *os.File) { if fn.Recv != nil { goname = "_cgoexpwrap" + cPrefix + "_" + fn.Recv.List[0].Names[0].Name + "_" + goname } - fmt.Fprintf(fc, "#pragma cgo_export_dynamic %s\n", goname) - fmt.Fprintf(fc, "extern void ·%s();\n\n", goname) - fmt.Fprintf(fc, "#pragma cgo_export_static _cgoexp%s_%s\n", cPrefix, exp.ExpName) - fmt.Fprintf(fc, "#pragma textflag 7\n") // no split stack, so no use of m or g - fmt.Fprintf(fc, "void\n") - fmt.Fprintf(fc, "_cgoexp%s_%s(void *a, int32 n)\n", cPrefix, exp.ExpName) - fmt.Fprintf(fc, "{\n") - fmt.Fprintf(fc, "\truntime·cgocallback(·%s, a, n);\n", goname) - fmt.Fprintf(fc, "}\n") + fmt.Fprintf(fgo2, "//go:cgo_export_dynamic %s\n", goname) + fmt.Fprintf(fgo2, "//go:linkname _cgoexp%s_%s _cgoexp%s_%s\n", cPrefix, exp.ExpName, cPrefix, exp.ExpName) + fmt.Fprintf(fgo2, "//go:cgo_export_static _cgoexp%s_%s\n", cPrefix, exp.ExpName) + fmt.Fprintf(fgo2, "//go:nosplit\n") // no split stack, so no use of m or g + fmt.Fprintf(fgo2, "func _cgoexp%s_%s(a unsafe.Pointer, n int32) {", cPrefix, exp.ExpName) + fmt.Fprintf(fgo2, "\tfn := %s\n", goname) + // The indirect here is converting from a Go function pointer to a C function pointer. + fmt.Fprintf(fgo2, "\t_cgo_runtime_cgocallback(**(**unsafe.Pointer)(unsafe.Pointer(&fn)), a, uintptr(n));\n") + fmt.Fprintf(fgo2, "}\n") fmt.Fprintf(fm, "int _cgoexp%s_%s;\n", cPrefix, exp.ExpName) @@ -817,7 +822,7 @@ func (p *Package) writeExports(fgo2, fc, fm *os.File) { } // Write out the C header allowing C code to call exported gccgo functions. -func (p *Package) writeGccgoExports(fgo2, fc, fm *os.File) { +func (p *Package) writeGccgoExports(fgo2, fc, fm io.Writer) { fgcc := creat(*objDir + "_cgo_export.c") fgcch := creat(*objDir + "_cgo_export.h") @@ -1164,60 +1169,39 @@ char *CString(_GoString_); void *_CMalloc(size_t); ` -const cProlog = ` -#include "runtime.h" -#include "cgocall.h" -#include "textflag.h" - -#pragma dataflag NOPTR -static void *cgocall_errno = runtime·cgocall_errno; -#pragma dataflag NOPTR -void *·_cgo_runtime_cgocall_errno = &cgocall_errno; - -#pragma dataflag NOPTR -static void *runtime_gostring = runtime·gostring; -#pragma dataflag NOPTR -void *·_cgo_runtime_gostring = &runtime_gostring; - -#pragma dataflag NOPTR -static void *runtime_gostringn = runtime·gostringn; -#pragma dataflag NOPTR -void *·_cgo_runtime_gostringn = &runtime_gostringn; - -#pragma dataflag NOPTR -static void *runtime_gobytes = runtime·gobytes; -#pragma dataflag NOPTR -void *·_cgo_runtime_gobytes = &runtime_gobytes; - -#pragma dataflag NOPTR -static void *runtime_cmalloc = runtime·cmalloc; -#pragma dataflag NOPTR -void *·_cgo_runtime_cmalloc = &runtime_cmalloc; - -void ·_Cerrno(void*, int32); -` - const goProlog = ` -var _cgo_runtime_cgocall_errno func(unsafe.Pointer, uintptr) int32 -var _cgo_runtime_cmalloc func(uintptr) unsafe.Pointer +//go:linkname _cgo_runtime_cgocall_errno runtime.cgocall_errno +func _cgo_runtime_cgocall_errno(unsafe.Pointer, uintptr) int32 + +//go:linkname _cgo_runtime_cmalloc runtime.cmalloc +func _cgo_runtime_cmalloc(uintptr) unsafe.Pointer + +//go:linkname _cgo_runtime_cgocallback runtime.cgocallback +func _cgo_runtime_cgocallback(unsafe.Pointer, unsafe.Pointer, uintptr) ` const goStringDef = ` -var _cgo_runtime_gostring func(*_Ctype_char) string +//go:linkname _cgo_runtime_gostring runtime.gostring +func _cgo_runtime_gostring(*_Ctype_char) string + func _Cfunc_GoString(p *_Ctype_char) string { return _cgo_runtime_gostring(p) } ` const goStringNDef = ` -var _cgo_runtime_gostringn func(*_Ctype_char, int) string +//go:linkname _cgo_runtime_gostringn runtime.gostringn +func _cgo_runtime_gostringn(*_Ctype_char, int) string + func _Cfunc_GoStringN(p *_Ctype_char, l _Ctype_int) string { return _cgo_runtime_gostringn(p, int(l)) } ` const goBytesDef = ` -var _cgo_runtime_gobytes func(unsafe.Pointer, int) []byte +//go:linkname _cgo_runtime_gobytes runtime.gobytes +func _cgo_runtime_gobytes(unsafe.Pointer, int) []byte + func _Cfunc_GoBytes(p unsafe.Pointer, l _Ctype_int) []byte { return _cgo_runtime_gobytes(p, int(l)) } diff --git a/src/cmd/dist/build.c b/src/cmd/dist/build.c index 8fd2e998a..bfb3d15b8 100644 --- a/src/cmd/dist/build.c +++ b/src/cmd/dist/build.c @@ -526,10 +526,6 @@ static struct { "anames8.c", "anames9.c", }}, - {"cmd/cc", { - "-pgen.c", - "-pswt.c", - }}, {"cmd/gc", { "-cplx.c", "-pgen.c", @@ -538,26 +534,6 @@ static struct { "-y1.tab.c", // makefile dreg "opnames.h", }}, - {"cmd/5c", { - "../cc/pgen.c", - "../cc/pswt.c", - "$GOROOT/pkg/obj/$GOHOSTOS_$GOHOSTARCH/libcc.a", - }}, - {"cmd/6c", { - "../cc/pgen.c", - "../cc/pswt.c", - "$GOROOT/pkg/obj/$GOHOSTOS_$GOHOSTARCH/libcc.a", - }}, - {"cmd/8c", { - "../cc/pgen.c", - "../cc/pswt.c", - "$GOROOT/pkg/obj/$GOHOSTOS_$GOHOSTARCH/libcc.a", - }}, - {"cmd/9c", { - "../cc/pgen.c", - "../cc/pswt.c", - "$GOROOT/pkg/obj/$GOHOSTOS_$GOHOSTARCH/libcc.a", - }}, {"cmd/5g", { "../gc/cplx.c", "../gc/pgen.c", @@ -611,12 +587,10 @@ static struct { "$GOROOT/pkg/obj/$GOHOSTOS_$GOHOSTARCH/lib9.a", }}, {"runtime", { - "zaexperiment.h", // must sort above zasm - "zasm_$GOOS_$GOARCH.h", + "zaexperiment.h", "zsys_$GOOS_$GOARCH.s", "zgoarch_$GOARCH.go", "zgoos_$GOOS.go", - "zruntime_defs_$GOOS_$GOARCH.go", "zversion.go", }}, }; @@ -639,12 +613,8 @@ static struct { {"anames6.c", mkanames}, {"anames8.c", mkanames}, {"anames9.c", mkanames}, - {"zasm_", mkzasm}, {"zdefaultcc.go", mkzdefaultcc}, {"zsys_", mkzsys}, - {"zgoarch_", mkzgoarch}, - {"zgoos_", mkzgoos}, - {"zruntime_defs_", mkzruntimedefs}, {"zversion.go", mkzversion}, {"zaexperiment.h", mkzexperiment}, @@ -659,7 +629,7 @@ install(char *dir) { char *name, *p, *elem, *prefix, *exe; bool islib, ispkg, isgo, stale, ispackcmd; - Buf b, b1, path, final_path, final_name; + Buf b, b1, path, final_path, final_name, archive; Vec compile, files, link, go, missing, clean, lib, extra; Time ttarg, t; int i, j, k, n, doclean, targ; @@ -676,6 +646,7 @@ install(char *dir) binit(&path); binit(&final_path); binit(&final_name); + binit(&archive); vinit(&compile); vinit(&files); vinit(&link); @@ -691,13 +662,6 @@ install(char *dir) bpathf(&final_path, "%s/src/%s", goroot_final, dir); name = lastelem(dir); - // For misc/prof, copy into the tool directory and we're done. - if(hasprefix(dir, "misc/")) { - copyfile(bpathf(&b, "%s/%s", tooldir, name), - bpathf(&b1, "%s/misc/%s", goroot, name), 1); - goto out; - } - // set up gcc command line on first run. if(gccargs.len == 0) { bprintf(&b, "%s %s", defaultcc, defaultcflags); @@ -726,7 +690,7 @@ install(char *dir) splitfields(&ldargs, bstr(&b)); } - islib = hasprefix(dir, "lib") || streq(dir, "cmd/cc") || streq(dir, "cmd/gc"); + islib = hasprefix(dir, "lib") || streq(dir, "cmd/gc"); ispkg = !islib && !hasprefix(dir, "cmd/"); isgo = ispkg || streq(dir, "cmd/go") || streq(dir, "cmd/cgo"); @@ -905,17 +869,6 @@ install(char *dir) // For package runtime, copy some files into the work space. if(streq(dir, "runtime")) { - copyfile(bpathf(&b, "%s/arch_GOARCH.h", workdir), - bpathf(&b1, "%s/arch_%s.h", bstr(&path), goarch), 0); - copyfile(bpathf(&b, "%s/defs_GOOS_GOARCH.h", workdir), - bpathf(&b1, "%s/defs_%s_%s.h", bstr(&path), goos, goarch), 0); - p = bpathf(&b1, "%s/signal_%s_%s.h", bstr(&path), goos, goarch); - if(isfile(p)) - copyfile(bpathf(&b, "%s/signal_GOOS_GOARCH.h", workdir), p, 0); - copyfile(bpathf(&b, "%s/os_GOOS.h", workdir), - bpathf(&b1, "%s/os_%s.h", bstr(&path), goos), 0); - copyfile(bpathf(&b, "%s/signals_GOOS.h", workdir), - bpathf(&b1, "%s/signals_%s.h", bstr(&path), goos), 0); copyfile(bpathf(&b, "%s/pkg/%s_%s/textflag.h", goroot, goos, goarch), bpathf(&b1, "%s/src/cmd/ld/textflag.h", goroot), 0); copyfile(bpathf(&b, "%s/pkg/%s_%s/funcdata.h", goroot, goos, goarch), @@ -949,14 +902,6 @@ install(char *dir) built:; } - // One more copy for package runtime. - // The last batch was required for the generators. - // This one is generated. - if(streq(dir, "runtime")) { - copyfile(bpathf(&b, "%s/zasm_GOOS_GOARCH.h", workdir), - bpathf(&b1, "%s/zasm_%s_%s.h", bstr(&path), goos, goarch), 0); - } - if((!streq(goos, gohostos) || !streq(goarch, gohostarch)) && isgo) { // We've generated the right files; the go command can do the build. if(vflag > 1) @@ -964,6 +909,42 @@ install(char *dir) goto nobuild; } + if(isgo) { + // The next loop will compile individual non-Go files. + // Hand the Go files to the compiler en masse. + // For package runtime, this writes go_asm.h, which + // the assembly files will need. + vreset(&compile); + vadd(&compile, bpathf(&b, "%s/%sg", tooldir, gochar)); + + bpathf(&b, "%s/_go_.a", workdir); + vadd(&compile, "-pack"); + vadd(&compile, "-o"); + vadd(&compile, bstr(&b)); + vadd(&clean, bstr(&b)); + if(!ispackcmd) + vadd(&link, bstr(&b)); + else + bwriteb(&archive, &b); + + vadd(&compile, "-p"); + if(hasprefix(dir, "cmd/")) + vadd(&compile, "main"); + else + vadd(&compile, dir); + + if(streq(dir, "runtime")) { + vadd(&compile, "-+"); + vadd(&compile, "-asmhdr"); + bpathf(&b1, "%s/go_asm.h", workdir); + vadd(&compile, bstr(&b1)); + } + + vcopy(&compile, go.p, go.len); + + runv(nil, bstr(&path), CheckExit, &compile); + } + // Compile the files. for(i=0; i<files.len; i++) { if(!hassuffix(files.p[i], ".c") && !hassuffix(files.p[i], ".s")) @@ -1077,38 +1058,10 @@ install(char *dir) } bgwait(); - if(isgo) { - // The last loop was compiling individual files. - // Hand the Go files to the compiler en masse. - vreset(&compile); - vadd(&compile, bpathf(&b, "%s/%sg", tooldir, gochar)); - - bpathf(&b, "%s/_go_.a", workdir); - vadd(&compile, "-pack"); - vadd(&compile, "-o"); - vadd(&compile, bstr(&b)); - vadd(&clean, bstr(&b)); - if(!ispackcmd) - vadd(&link, bstr(&b)); - - vadd(&compile, "-p"); - if(hasprefix(dir, "pkg/")) - vadd(&compile, dir+4); - else - vadd(&compile, "main"); - - if(streq(dir, "runtime")) - vadd(&compile, "-+"); - - vcopy(&compile, go.p, go.len); - - runv(nil, bstr(&path), CheckExit, &compile); - - if(ispackcmd) { - xremove(link.p[targ]); - dopack(link.p[targ], bstr(&b), &link.p[targ+1], link.len - (targ+1)); - goto nobuild; - } + if(isgo && ispackcmd) { + xremove(link.p[targ]); + dopack(link.p[targ], bstr(&archive), &link.p[targ+1], link.len - (targ+1)); + goto nobuild; } if(!islib && !isgo) { @@ -1122,17 +1075,7 @@ install(char *dir) xremove(link.p[targ]); runv(nil, nil, CheckExit, &link); - nobuild: - // In package runtime, we install runtime.h and cgocall.h too, - // for use by cgo compilation. - if(streq(dir, "runtime")) { - copyfile(bpathf(&b, "%s/pkg/%s_%s/cgocall.h", goroot, goos, goarch), - bpathf(&b1, "%s/src/runtime/cgocall.h", goroot), 0); - copyfile(bpathf(&b, "%s/pkg/%s_%s/runtime.h", goroot, goos, goarch), - bpathf(&b1, "%s/src/runtime/runtime.h", goroot), 0); - } - out: for(i=0; i<clean.len; i++) @@ -1141,6 +1084,7 @@ out: bfree(&b); bfree(&b1); bfree(&path); + bfree(&archive); vfree(&compile); vfree(&files); vfree(&link); @@ -1328,13 +1272,9 @@ static char *buildorder[] = { "libbio", "liblink", - "misc/pprof", - - "cmd/cc", // must be before c "cmd/gc", // must be before g - "cmd/%sl", // must be before a, c, g + "cmd/%sl", // must be before a, g "cmd/%sa", - "cmd/%sc", "cmd/%sg", // The dependency order here was copied from a buildscript @@ -1391,22 +1331,17 @@ static char *buildorder[] = { static char *cleantab[] = { // Commands and C libraries. "cmd/5a", - "cmd/5c", "cmd/5g", "cmd/5l", "cmd/6a", - "cmd/6c", "cmd/6g", "cmd/6l", "cmd/8a", - "cmd/8c", "cmd/8g", "cmd/8l", "cmd/9a", - "cmd/9c", "cmd/9g", "cmd/9l", - "cmd/cc", "cmd/gc", "cmd/go", "lib9", @@ -1482,12 +1417,13 @@ clean(void) xremove(bpathf(&b, "%s/%s", bstr(&path), cleantab[i]+4)); } - // remove src/runtime/z* unconditionally + // remove src/runtime/z* unconditionally, + // except leave zgoos and zgoarch, now maintained with go generate. vreset(&dir); bpathf(&path, "%s/src/runtime", goroot); xreaddir(&dir, bstr(&path)); for(j=0; j<dir.len; j++) { - if(hasprefix(dir.p[j], "z")) + if(hasprefix(dir.p[j], "z") && !hasprefix(dir.p[j], "zg")) xremove(bpathf(&b, "%s/%s", bstr(&path), dir.p[j])); } diff --git a/src/cmd/dist/buildruntime.c b/src/cmd/dist/buildruntime.c index d22e09955..38e99e116 100644 --- a/src/cmd/dist/buildruntime.c +++ b/src/cmd/dist/buildruntime.c @@ -67,234 +67,8 @@ mkzexperiment(char *dir, char *file) bfree(&exp); } -// mkzgoarch writes zgoarch_$GOARCH.go: -// -// package runtime -// const theGoarch = <goarch> -// -void -mkzgoarch(char *dir, char *file) -{ - Buf b, out; - - USED(dir); - - binit(&b); - binit(&out); - - bwritestr(&out, bprintf(&b, - "// auto generated by go tool dist\n" - "\n" - "package runtime\n" - "\n" - "const theGoarch = `%s`\n", goarch)); - - writefile(&out, file, 0); - - bfree(&b); - bfree(&out); -} - -// mkzgoos writes zgoos_$GOOS.go: -// -// package runtime -// const theGoos = <goos> -// -void -mkzgoos(char *dir, char *file) -{ - Buf b, out; - - USED(dir); - - binit(&b); - binit(&out); - - bwritestr(&out, "// auto generated by go tool dist\n\n"); - - if(streq(goos, "linux")) { - bwritestr(&out, "// +build !android\n\n"); - } - - bwritestr(&out, bprintf(&b, - "package runtime\n" - "\n" - "const theGoos = `%s`\n", goos)); - - writefile(&out, file, 0); - - bfree(&b); - bfree(&out); -} - -static struct { - char *goarch; - char *goos; - char *hdr; -} zasmhdr[] = { - {"386", "", - "#define get_tls(r) MOVL TLS, r\n" - "#define g(r) 0(r)(TLS*1)\n" - }, - {"amd64p32", "", - "#define get_tls(r) MOVL TLS, r\n" - "#define g(r) 0(r)(TLS*1)\n" - }, - {"amd64", "", - "#define get_tls(r) MOVQ TLS, r\n" - "#define g(r) 0(r)(TLS*1)\n" - }, - - {"arm", "", - "#define LR R14\n" - }, - - {"power64", "", - "#define g R30\n" - }, - {"power64le", "", - "#define g R30\n" - }, -}; - #define MAXWINCB 2000 /* maximum number of windows callbacks allowed */ -// mkzasm writes zasm_$GOOS_$GOARCH.h, -// which contains struct offsets for use by -// assembly files. It also writes a copy to the work space -// under the name zasm_GOOS_GOARCH.h (no expansion). -// -void -mkzasm(char *dir, char *file) -{ - int i, n; - char *aggr, *p; - Buf in, b, b1, out, exp; - Vec argv, lines, fields; - - binit(&in); - binit(&b); - binit(&b1); - binit(&out); - binit(&exp); - vinit(&argv); - vinit(&lines); - vinit(&fields); - - bwritestr(&out, "// auto generated by go tool dist\n\n"); - if(streq(goos, "linux")) { - bwritestr(&out, "// +build !android\n\n"); - } - - for(i=0; i<nelem(zasmhdr); i++) { - if(hasprefix(goarch, zasmhdr[i].goarch) && hasprefix(goos, zasmhdr[i].goos)) { - bwritestr(&out, zasmhdr[i].hdr); - goto ok; - } - } - fatal("unknown $GOOS/$GOARCH in mkzasm"); -ok: - - copyfile(bpathf(&b, "%s/pkg/%s_%s/textflag.h", goroot, goos, goarch), - bpathf(&b1, "%s/src/cmd/ld/textflag.h", goroot), 0); - - // Run 6c -D GOOS_goos -D GOARCH_goarch -I workdir -a -n -o workdir/proc.acid proc.c - // to get acid [sic] output. Run once without the -a -o workdir/proc.acid in order to - // report compilation failures (the -o redirects all messages, unfortunately). - vreset(&argv); - vadd(&argv, bpathf(&b, "%s/%sc", tooldir, gochar)); - vadd(&argv, "-D"); - vadd(&argv, bprintf(&b, "GOOS_%s", goos)); - vadd(&argv, "-D"); - vadd(&argv, bprintf(&b, "GOARCH_%s", goarch)); - vadd(&argv, "-I"); - vadd(&argv, bprintf(&b, "%s", workdir)); - vadd(&argv, "-I"); - vadd(&argv, bprintf(&b, "%s/pkg/%s_%s", goroot, goos, goarch)); - vadd(&argv, "-n"); - vadd(&argv, "-a"); - vadd(&argv, "-o"); - vadd(&argv, bpathf(&b, "%s/proc.acid", workdir)); - vadd(&argv, "proc.c"); - runv(nil, dir, CheckExit, &argv); - readfile(&in, bpathf(&b, "%s/proc.acid", workdir)); - - // Convert input like - // aggr G - // { - // Gobuf 24 sched; - // 'Y' 48 stack0; - // } - // StackMin = 128; - // into output like - // #define g_sched 24 - // #define g_stack0 48 - // #define const_StackMin 128 - aggr = nil; - splitlines(&lines, bstr(&in)); - for(i=0; i<lines.len; i++) { - splitfields(&fields, lines.p[i]); - if(fields.len == 2 && streq(fields.p[0], "aggr")) { - if(streq(fields.p[1], "G")) - aggr = "g"; - else if(streq(fields.p[1], "M")) - aggr = "m"; - else if(streq(fields.p[1], "P")) - aggr = "p"; - else if(streq(fields.p[1], "Gobuf")) - aggr = "gobuf"; - else if(streq(fields.p[1], "LibCall")) - aggr = "libcall"; - else if(streq(fields.p[1], "WinCallbackContext")) - aggr = "cbctxt"; - else if(streq(fields.p[1], "SEH")) - aggr = "seh"; - else if(streq(fields.p[1], "Alg")) - aggr = "alg"; - else if(streq(fields.p[1], "Panic")) - aggr = "panic"; - else if(streq(fields.p[1], "Stack")) - aggr = "stack"; - } - if(hasprefix(lines.p[i], "}")) - aggr = nil; - if(aggr && hasprefix(lines.p[i], "\t") && fields.len >= 2) { - n = fields.len; - p = fields.p[n-1]; - if(p[xstrlen(p)-1] == ';') - p[xstrlen(p)-1] = '\0'; - bwritestr(&out, bprintf(&b, "#define %s_%s %s\n", aggr, fields.p[n-1], fields.p[n-2])); - } - if(fields.len == 3 && streq(fields.p[1], "=")) { // generated from enumerated constants - p = fields.p[2]; - if(p[xstrlen(p)-1] == ';') - p[xstrlen(p)-1] = '\0'; - bwritestr(&out, bprintf(&b, "#define const_%s %s\n", fields.p[0], p)); - } - } - - // Some #defines that are used for .c files. - if(streq(goos, "windows")) { - bwritestr(&out, bprintf(&b, "#define cb_max %d\n", MAXWINCB)); - } - - xgetenv(&exp, "GOEXPERIMENT"); - bwritestr(&out, bprintf(&b, "#define GOEXPERIMENT \"%s\"\n", bstr(&exp))); - - // Write both to file and to workdir/zasm_GOOS_GOARCH.h. - writefile(&out, file, 0); - writefile(&out, bprintf(&b, "%s/zasm_GOOS_GOARCH.h", workdir), 0); - - bfree(&in); - bfree(&b); - bfree(&b1); - bfree(&out); - bfree(&exp); - vfree(&argv); - vfree(&lines); - vfree(&fields); -} - // mkzsys writes zsys_$GOOS_$GOARCH.s, // which contains arch or os specific asm code. // @@ -333,143 +107,3 @@ mkzsys(char *dir, char *file) bfree(&out); } - -static char *runtimedefs[] = { - "defs.c", - "malloc.c", - "mcache.c", - "mgc0.c", - "proc.c", - "parfor.c", - "stack.c", -}; - -// mkzruntimedefs writes zruntime_defs_$GOOS_$GOARCH.h, -// which contains Go struct definitions equivalent to the C ones. -// Mostly we just write the output of 6c -q to the file. -// However, we run it on multiple files, so we have to delete -// the duplicated definitions, and we don't care about the funcs, -// so we delete those too. -// -void -mkzruntimedefs(char *dir, char *file) -{ - int i, skip; - char *p; - Buf in, b, b1, out; - Vec argv, lines, fields, seen; - - binit(&in); - binit(&b); - binit(&b1); - binit(&out); - vinit(&argv); - vinit(&lines); - vinit(&fields); - vinit(&seen); - - bwritestr(&out, "// auto generated by go tool dist\n" - "\n"); - - if(streq(goos, "linux")) { - bwritestr(&out, "// +build !android\n\n"); - } - - bwritestr(&out, - "package runtime\n" - "import \"unsafe\"\n" - "var _ unsafe.Pointer\n" - "\n" - ); - - // Do not emit definitions for these. - vadd(&seen, "true"); - vadd(&seen, "false"); - vadd(&seen, "raceenabled"); - vadd(&seen, "allgs"); - - // Run 6c -D GOOS_goos -D GOARCH_goarch -I workdir -q -n -o workdir/runtimedefs - // on each of the runtimedefs C files. - vadd(&argv, bpathf(&b, "%s/%sc", tooldir, gochar)); - vadd(&argv, "-D"); - vadd(&argv, bprintf(&b, "GOOS_%s", goos)); - vadd(&argv, "-D"); - vadd(&argv, bprintf(&b, "GOARCH_%s", goarch)); - vadd(&argv, "-I"); - vadd(&argv, bprintf(&b, "%s", workdir)); - vadd(&argv, "-I"); - vadd(&argv, bprintf(&b, "%s/pkg/%s_%s", goroot, goos, goarch)); - vadd(&argv, "-q"); - vadd(&argv, "-n"); - vadd(&argv, "-o"); - vadd(&argv, bpathf(&b, "%s/runtimedefs", workdir)); - vadd(&argv, ""); - p = argv.p[argv.len-1]; - for(i=0; i<nelem(runtimedefs); i++) { - argv.p[argv.len-1] = runtimedefs[i]; - runv(nil, dir, CheckExit, &argv); - readfile(&b, bpathf(&b1, "%s/runtimedefs", workdir)); - bwriteb(&in, &b); - } - argv.p[argv.len-1] = p; - - // Process the aggregate output. - skip = 0; - splitlines(&lines, bstr(&in)); - for(i=0; i<lines.len; i++) { - p = lines.p[i]; - // Drop comment and func lines. - if(hasprefix(p, "//") || hasprefix(p, "func")) - continue; - - // Note beginning of type or var decl, which can be multiline. - // Remove duplicates. The linear check of seen here makes the - // whole processing quadratic in aggregate, but there are only - // about 100 declarations, so this is okay (and simple). - if(hasprefix(p, "type ") || hasprefix(p, "var ") || hasprefix(p, "const ")) { - splitfields(&fields, p); - if(fields.len < 2) - continue; - if(find(fields.p[1], seen.p, seen.len) >= 0) { - if(streq(fields.p[fields.len-1], "{")) - skip = 1; // skip until } - continue; - } - vadd(&seen, fields.p[1]); - } - - // Const lines are printed in original case (usually upper). Add a leading _ as needed. - if(hasprefix(p, "const ")) { - if('A' <= p[6] && p[6] <= 'Z') - bwritestr(&out, "const _"); - else - bwritestr(&out, "const "); - bwritestr(&out, p+6); - continue; - } - - if(skip) { - if(hasprefix(p, "}")) - skip = 0; - continue; - } - - bwritestr(&out, p); - } - - // Some windows specific const. - if(streq(goos, "windows")) { - bwritestr(&out, bprintf(&b, "const cb_max = %d\n", MAXWINCB)); - } - - writefile(&out, file, 0); - - bfree(&in); - bfree(&b); - bfree(&b1); - bfree(&out); - vfree(&argv); - vfree(&lines); - vfree(&fields); - vfree(&seen); -} diff --git a/src/cmd/gc/export.c b/src/cmd/gc/export.c index da5984ceb..aeee55236 100644 --- a/src/cmd/gc/export.c +++ b/src/cmd/gc/export.c @@ -7,6 +7,8 @@ #include "go.h" #include "y.tab.h" +static NodeList *asmlist; + static void dumpexporttype(Type *t); // Mark n's symbol as exported @@ -68,6 +70,11 @@ autoexport(Node *n, int ctxt) // -A is for cmd/gc/mkbuiltin script, so export everything if(debug['A'] || exportname(n->sym->name) || initname(n->sym->name)) exportsym(n); + if(asmhdr && n->sym->pkg == localpkg && !(n->sym->flags & SymAsm)) { + n->sym->flags |= SymAsm; + asmlist = list(asmlist, n); + } + } static void @@ -519,3 +526,37 @@ importtype(Type *pt, Type *t) if(debug['E']) print("import type %T %lT\n", pt, t); } + +void +dumpasmhdr(void) +{ + Biobuf *b; + NodeList *l; + Node *n; + Type *t; + + b = Bopen(asmhdr, OWRITE); + if(b == nil) + fatal("open %s: %r", asmhdr); + Bprint(b, "// generated by %cg -asmhdr from package %s\n\n", thechar, localpkg->name); + for(l=asmlist; l; l=l->next) { + n = l->n; + if(isblanksym(n->sym)) + continue; + switch(n->op) { + case OLITERAL: + Bprint(b, "#define const_%s %#V\n", n->sym->name, &n->val); + break; + case OTYPE: + t = n->type; + if(t->etype != TSTRUCT || t->map != T || t->funarg) + break; + for(t=t->type; t != T; t=t->down) + if(!isblanksym(t->sym)) + Bprint(b, "#define %s_%s %d\n", n->sym->name, t->sym->name, (int)t->width); + break; + } + } + + Bterm(b); +} diff --git a/src/cmd/gc/go.h b/src/cmd/gc/go.h index d3c4193b5..6e326961d 100644 --- a/src/cmd/gc/go.h +++ b/src/cmd/gc/go.h @@ -382,6 +382,7 @@ enum SymExported = 1<<2, // already written out by export SymUniq = 1<<3, SymSiggen = 1<<4, + SymAsm = 1<<5, }; struct Sym @@ -393,6 +394,7 @@ struct Sym int32 npkg; // number of imported packages with this name uint32 uniqgen; Pkg* importdef; // where imported definition was found + char* linkname; // link name // saved and restored by dcopy Pkg* pkg; @@ -860,6 +862,8 @@ EXTERN int32 lexlineno; EXTERN int32 lineno; EXTERN int32 prevlineno; +EXTERN Fmt pragcgobuf; + EXTERN char* infile; EXTERN char* outfile; EXTERN Biobuf* bout; @@ -890,6 +894,7 @@ EXTERN Pkg* typelinkpkg; // fake package for runtime type info (data) EXTERN Pkg* weaktypepkg; // weak references to runtime type info EXTERN Pkg* unsafepkg; // package unsafe EXTERN Pkg* trackpkg; // fake package for field tracking +EXTERN Pkg* rawpkg; // fake package for raw symbol names EXTERN Pkg* phash[128]; EXTERN int tptr; // either TPTR32 or TPTR64 extern char* runtimeimport; @@ -897,6 +902,7 @@ extern char* unsafeimport; EXTERN char* myimportpath; EXTERN Idir* idirs; EXTERN char* localimport; +EXTERN char* asmhdr; EXTERN Type* types[NTYPE]; EXTERN Type* idealstring; @@ -1147,6 +1153,7 @@ void escapes(NodeList*); */ void autoexport(Node *n, int ctxt); void dumpexport(void); +void dumpasmhdr(void); int exportname(char *s); void exportsym(Node *n); void importconst(Sym *s, Type *t, Node *n); diff --git a/src/cmd/gc/lex.c b/src/cmd/gc/lex.c index 2303b442c..2bd7adfb6 100644 --- a/src/cmd/gc/lex.c +++ b/src/cmd/gc/lex.c @@ -17,6 +17,8 @@ extern int yychar; int yyprev; int yylast; +static int imported_unsafe; + static void lexinit(void); static void lexinit1(void); static void lexfini(void); @@ -271,6 +273,9 @@ main(int argc, char *argv[]) flag_largemodel = 1; setexp(); + + fmtstrinit(&pragcgobuf); + quotefmtinstall(); outfile = nil; flagcount("+", "compiling runtime", &compiling_runtime); @@ -289,6 +294,7 @@ main(int argc, char *argv[]) flagcount("S", "print assembly listing", &debug['S']); flagfn0("V", "print compiler version", doversion); flagcount("W", "debug parse tree after type checking", &debug['W']); + flagstr("asmhdr", "file: write assembly header to named file", &asmhdr); flagcount("complete", "compiling complete package (no C or assembly)", &pure_go); flagstr("d", "list: print debug information about items in list", &debugstr); flagcount("e", "no limit on number of errors reported", &debug['e']); @@ -344,8 +350,8 @@ main(int argc, char *argv[]) break; } } - if(j == nelem(debugtab)) - fatal("unknown debug information -d '%s'\n", f[i]); + if(debugtab[j].name == nil) + sysfatal("unknown debug information -d '%s'\n", f[i]); } } @@ -403,6 +409,8 @@ main(int argc, char *argv[]) block = 1; iota = -1000000; + + imported_unsafe = 0; yyparse(); if(nsyntaxerrors != 0) @@ -509,6 +517,9 @@ main(int argc, char *argv[]) errorexit(); dumpobj(); + + if(asmhdr) + dumpasmhdr(); if(nerrors+nsavederrors) errorexit(); @@ -724,6 +735,7 @@ importfile(Val *f, int line) } importpkg = mkpkg(f->u.sval); cannedimports("unsafe.6", unsafeimport); + imported_unsafe = 1; return; } @@ -1501,6 +1513,20 @@ caseout: return LLITERAL; } +static void pragcgo(char*); + +static int +more(char **pp) +{ + char *p; + + p = *pp; + while(yy_isspace(*p)) + p++; + *pp = p; + return *p != '\0'; +} + /* * read and interpret syntax that looks like * //line parse.y:15 @@ -1583,9 +1609,39 @@ go: *cp++ = c; } *cp = 0; + + if(strncmp(lexbuf, "go:cgo_", 7) == 0) + pragcgo(lexbuf); + ep = strchr(lexbuf, ' '); if(ep != nil) *ep = 0; + + if(strcmp(lexbuf, "go:linkname") == 0) { + if(!imported_unsafe) + yyerror("//go:linkname only allowed in Go files that import \"unsafe\""); + if(ep == nil) { + yyerror("usage: //go:linkname localname linkname"); + goto out; + } + cp = ep+1; + while(yy_isspace(*cp)) + cp++; + ep = strchr(cp, ' '); + if(ep == nil) { + yyerror("usage: //go:linkname localname linkname"); + goto out; + } + *ep++ = 0; + while(yy_isspace(*ep)) + ep++; + if(*ep == 0) { + yyerror("usage: //go:linkname localname linkname"); + goto out; + } + lookup(cp)->linkname = strdup(ep); + goto out; + } if(strcmp(lexbuf, "go:nointerface") == 0 && fieldtrack_enabled) { nointerface = 1; @@ -1604,6 +1660,150 @@ out: return c; } +static char* +getimpsym(char **pp) +{ + char *p, *start; + + more(pp); // skip spaces + + p = *pp; + if(*p == '\0' || *p == '"') + return nil; + + start = p; + while(*p != '\0' && !yy_isspace(*p) && *p != '"') + p++; + if(*p != '\0') + *p++ = '\0'; + + *pp = p; + return start; +} + +static char* +getquoted(char **pp) +{ + char *p, *start; + + more(pp); // skip spaces + + p = *pp; + if(*p != '"') + return nil; + p++; + + start = p; + while(*p != '"') { + if(*p == '\0') + return nil; + p++; + } + *p++ = '\0'; + *pp = p; + return start; +} + +// Copied nearly verbatim from the C compiler's #pragma parser. +// TODO: Rewrite more cleanly once the compiler is written in Go. +static void +pragcgo(char *text) +{ + char *local, *remote, *p, *q, *verb; + + for(q=text; *q != '\0' && *q != ' '; q++) + ; + if(*q == ' ') + *q++ = '\0'; + + verb = text+3; // skip "go:" + + if(strcmp(verb, "cgo_dynamic_linker") == 0 || strcmp(verb, "dynlinker") == 0) { + p = getquoted(&q); + if(p == nil) + goto err1; + fmtprint(&pragcgobuf, "cgo_dynamic_linker %q\n", p); + goto out; + + err1: + yyerror("usage: //go:cgo_dynamic_linker \"path\""); + goto out; + } + + if(strcmp(verb, "dynexport") == 0) + verb = "cgo_export_dynamic"; + if(strcmp(verb, "cgo_export_static") == 0 || strcmp(verb, "cgo_export_dynamic") == 0) { + local = getimpsym(&q); + if(local == nil) + goto err2; + if(!more(&q)) { + fmtprint(&pragcgobuf, "%s %q\n", verb, local); + goto out; + } + remote = getimpsym(&q); + if(remote == nil) + goto err2; + fmtprint(&pragcgobuf, "%s %q %q\n", verb, local, remote); + goto out; + + err2: + yyerror("usage: //go:%s local [remote]", verb); + goto out; + } + + if(strcmp(verb, "cgo_import_dynamic") == 0 || strcmp(verb, "dynimport") == 0) { + local = getimpsym(&q); + if(local == nil) + goto err3; + if(!more(&q)) { + fmtprint(&pragcgobuf, "cgo_import_dynamic %q\n", local); + goto out; + } + remote = getimpsym(&q); + if(remote == nil) + goto err3; + if(!more(&q)) { + fmtprint(&pragcgobuf, "cgo_import_dynamic %q %q\n", local, remote); + goto out; + } + p = getquoted(&q); + if(p == nil) + goto err3; + fmtprint(&pragcgobuf, "cgo_import_dynamic %q %q %q\n", local, remote, p); + goto out; + + err3: + yyerror("usage: //go:cgo_import_dynamic local [remote [\"library\"]]"); + goto out; + } + + if(strcmp(verb, "cgo_import_static") == 0) { + local = getimpsym(&q); + if(local == nil || more(&q)) + goto err4; + fmtprint(&pragcgobuf, "cgo_import_static %q\n", local); + goto out; + + err4: + yyerror("usage: //go:cgo_import_static local"); + goto out; + } + + if(strcmp(verb, "cgo_ldflag") == 0) { + p = getquoted(&q); + if(p == nil) + goto err5; + fmtprint(&pragcgobuf, "cgo_ldflag %q\n", p); + goto out; + + err5: + yyerror("usage: //go:cgo_ldflag \"arg\""); + goto out; + } + +out:; +} + int32 yylex(void) { diff --git a/src/cmd/gc/obj.c b/src/cmd/gc/obj.c index b752a13ce..7e4e97854 100644 --- a/src/cmd/gc/obj.c +++ b/src/cmd/gc/obj.c @@ -67,6 +67,16 @@ dumpobj(void) startobj = Boffset(bout); Bprint(bout, "go object %s %s %s %s\n", getgoos(), getgoarch(), getgoversion(), expstring()); } + + if(pragcgobuf.to > pragcgobuf.start) { + if(writearchive) { + // write empty export section; must be before cgo section + Bprint(bout, "\n$$\n\n$$\n\n"); + } + Bprint(bout, "\n$$ // cgo\n"); + Bprint(bout, "%s\n$$\n\n", fmtstrflush(&pragcgobuf)); + } + Bprint(bout, "\n!\n"); @@ -153,6 +163,8 @@ linksym(Sym *s) return s->lsym; if(isblanksym(s)) s->lsym = linklookup(ctxt, "_", 0); + else if(s->linkname != nil) + s->lsym = linklookup(ctxt, s->linkname, 0); else { p = smprint("%s.%s", s->pkg->prefix, s->name); s->lsym = linklookup(ctxt, p, 0); diff --git a/src/cmd/gc/plive.c b/src/cmd/gc/plive.c index 0feb2c710..3bfa69b1f 100644 --- a/src/cmd/gc/plive.c +++ b/src/cmd/gc/plive.c @@ -1092,7 +1092,7 @@ twobitwalktype1(Type *t, vlong *xoffset, Bvec *bv) case TCOMPLEX64: case TCOMPLEX128: for(i = 0; i < t->width; i++) { - bvset(bv, ((*xoffset + i) / widthptr) * BitsPerPointer); // 1 = live scalar + bvset(bv, ((*xoffset + i) / widthptr) * BitsPerPointer); // 1 = live scalar (BitsScalar) } *xoffset += t->width; break; @@ -1105,7 +1105,7 @@ twobitwalktype1(Type *t, vlong *xoffset, Bvec *bv) case TMAP: if((*xoffset & (widthptr-1)) != 0) fatal("twobitwalktype1: invalid alignment, %T", t); - bvset(bv, (*xoffset / widthptr) * BitsPerPointer + 1); // 2 = live ptr + bvset(bv, (*xoffset / widthptr) * BitsPerPointer + 1); // 2 = live ptr (BitsPointer) *xoffset += t->width; break; @@ -1113,7 +1113,7 @@ twobitwalktype1(Type *t, vlong *xoffset, Bvec *bv) // struct { byte *str; intgo len; } if((*xoffset & (widthptr-1)) != 0) fatal("twobitwalktype1: invalid alignment, %T", t); - bvset(bv, (*xoffset / widthptr) * BitsPerPointer + 1); // 2 = live ptr in first slot + bvset(bv, (*xoffset / widthptr) * BitsPerPointer + 1); // 2 = live ptr in first slot (BitsPointer) *xoffset += t->width; break; @@ -1123,15 +1123,8 @@ twobitwalktype1(Type *t, vlong *xoffset, Bvec *bv) // struct { Type *type; union { void *ptr, uintptr val } data; } if((*xoffset & (widthptr-1)) != 0) fatal("twobitwalktype1: invalid alignment, %T", t); - bvset(bv, ((*xoffset / widthptr) * BitsPerPointer) + 0); - bvset(bv, ((*xoffset / widthptr) * BitsPerPointer) + 1); // 3 = multiword - // next word contains 2 = Iface, 3 = Eface - if(isnilinter(t)) { - bvset(bv, ((*xoffset / widthptr) * BitsPerPointer) + 2); - bvset(bv, ((*xoffset / widthptr) * BitsPerPointer) + 3); - } else { - bvset(bv, ((*xoffset / widthptr) * BitsPerPointer) + 3); - } + bvset(bv, (*xoffset / widthptr) * BitsPerPointer + 1); // 2 = live ptr in first slot (BitsPointer) + bvset(bv, (*xoffset / widthptr) * BitsPerPointer + 3); // 2 = live ptr in second slot (BitsPointer) *xoffset += t->width; break; @@ -1144,7 +1137,7 @@ twobitwalktype1(Type *t, vlong *xoffset, Bvec *bv) // struct { byte *array; uintgo len; uintgo cap; } if((*xoffset & (widthptr-1)) != 0) fatal("twobitwalktype1: invalid TARRAY alignment, %T", t); - bvset(bv, (*xoffset / widthptr) * BitsPerPointer + 1); // 2 = live ptr in first slot + bvset(bv, (*xoffset / widthptr) * BitsPerPointer + 1); // 2 = live ptr in first slot (BitsPointer) *xoffset += t->width; } else for(i = 0; i < t->bound; i++) diff --git a/src/cmd/gc/reflect.c b/src/cmd/gc/reflect.c index b2ff2fbc5..4155953be 100644 --- a/src/cmd/gc/reflect.c +++ b/src/cmd/gc/reflect.c @@ -1318,7 +1318,7 @@ gengcmask(Type *t, uint8 gcmask[16]) { Bvec *vec; vlong xoffset, nptr, i, j; - int half, mw; + int half; uint8 bits, *pos; memset(gcmask, 0, 16); @@ -1335,7 +1335,6 @@ gengcmask(Type *t, uint8 gcmask[16]) pos = (uint8*)gcmask; nptr = (t->width+widthptr-1)/widthptr; half = 0; - mw = 0; // If number of words is odd, repeat the mask. // This makes simpler handling of arrays in runtime. for(j=0; j<=(nptr%2); j++) { @@ -1344,9 +1343,8 @@ gengcmask(Type *t, uint8 gcmask[16]) // Some fake types (e.g. Hmap) has missing fileds. // twobitwalktype1 generates BitsDead for that holes, // replace BitsDead with BitsScalar. - if(!mw && bits == BitsDead) + if(bits == BitsDead) bits = BitsScalar; - mw = !mw && bits == BitsMultiWord; bits <<= 2; if(half) bits <<= 4; @@ -1525,11 +1523,9 @@ gengcprog1(ProgGen *g, Type *t, vlong *xoffset) *xoffset += t->width; break; case TINTER: - proggendata(g, BitsMultiWord); - if(isnilinter(t)) - proggendata(g, BitsEface); - else - proggendata(g, BitsIface); + // Assuming IfacePointerOnly=1. + proggendata(g, BitsPointer); + proggendata(g, BitsPointer); *xoffset += t->width; break; case TARRAY: diff --git a/src/cmd/gc/subr.c b/src/cmd/gc/subr.c index c3bc5af3b..5e369b695 100644 --- a/src/cmd/gc/subr.c +++ b/src/cmd/gc/subr.c @@ -3802,39 +3802,25 @@ checknil(Node *x, NodeList **init) /* * Can this type be stored directly in an interface word? + * Yes, if the representation is a single pointer. */ int isdirectiface(Type *t) { - // Setting IfacePointerOnly = 1 changes the - // interface representation so that the data word - // in an interface value must always be a pointer. - // Setting it to 0 uses the original representation, - // where the data word can hold a pointer or any - // non-pointer value no bigger than a pointer. - enum { - IfacePointerOnly = 1, - }; - - if(IfacePointerOnly) { - switch(t->etype) { - case TPTR32: - case TPTR64: - case TCHAN: - case TMAP: - case TFUNC: - case TUNSAFEPTR: - return 1; - case TARRAY: - // Array of 1 direct iface type can be direct. - return t->bound == 1 && isdirectiface(t->type); - case TSTRUCT: - // Struct with 1 field of direct iface type can be direct. - return t->type != T && t->type->down == T && isdirectiface(t->type->type); - } - return 0; + switch(t->etype) { + case TPTR32: + case TPTR64: + case TCHAN: + case TMAP: + case TFUNC: + case TUNSAFEPTR: + return 1; + case TARRAY: + // Array of 1 direct iface type can be direct. + return t->bound == 1 && isdirectiface(t->type); + case TSTRUCT: + // Struct with 1 field of direct iface type can be direct. + return t->type != T && t->type->down == T && isdirectiface(t->type->type); } - - dowidth(t); - return t->width <= widthptr; + return 0; } diff --git a/src/cmd/gc/walk.c b/src/cmd/gc/walk.c index d4d0f449c..77f9c80f9 100644 --- a/src/cmd/gc/walk.c +++ b/src/cmd/gc/walk.c @@ -1766,7 +1766,6 @@ walkprint(Node *nn, NodeList **init) int notfirst, et, op; NodeList *calls; - on = nil; op = nn->op; all = nn->list; calls = nil; diff --git a/src/cmd/go/build.go b/src/cmd/go/build.go index 79a27116a..5dcaa04a1 100644 --- a/src/cmd/go/build.go +++ b/src/cmd/go/build.go @@ -813,7 +813,7 @@ func (b *builder) build(a *action) (err error) { } if a.p.Standard && a.p.ImportPath == "runtime" && buildContext.Compiler == "gc" && - !hasString(a.p.HFiles, "zasm_"+buildContext.GOOS+"_"+buildContext.GOARCH+".h") { + !hasString(a.p.SFiles, "zsys_"+buildContext.GOOS+"_"+buildContext.GOARCH+".s") { return fmt.Errorf("%s/%s must be bootstrapped using make%v", buildContext.GOOS, buildContext.GOARCH, defaultSuffix()) } @@ -941,7 +941,7 @@ func (b *builder) build(a *action) (err error) { inc := b.includeArgs("-I", a.deps) // Compile Go. - ofile, out, err := buildToolchain.gc(b, a.p, a.objpkg, obj, inc, gofiles) + ofile, out, err := buildToolchain.gc(b, a.p, a.objpkg, obj, len(sfiles) > 0, inc, gofiles) if len(out) > 0 { b.showOutput(a.p.Dir, a.p.ImportPath, b.processOutput(out)) if err != nil { @@ -1550,7 +1550,7 @@ type toolchain interface { // gc runs the compiler in a specific directory on a set of files // and returns the name of the generated output file. // The compiler runs in the directory dir. - gc(b *builder, p *Package, archive, obj string, importArgs []string, gofiles []string) (ofile string, out []byte, err error) + gc(b *builder, p *Package, archive, obj string, asmhdr bool, importArgs []string, gofiles []string) (ofile string, out []byte, err error) // cc runs the toolchain's C compiler in a directory on a C file // to produce an output file. cc(b *builder, p *Package, objdir, ofile, cfile string) error @@ -1587,7 +1587,7 @@ func (noToolchain) linker() string { return "" } -func (noToolchain) gc(b *builder, p *Package, archive, obj string, importArgs []string, gofiles []string) (ofile string, out []byte, err error) { +func (noToolchain) gc(b *builder, p *Package, archive, obj string, asmhdr bool, importArgs []string, gofiles []string) (ofile string, out []byte, err error) { return "", nil, noCompiler() } @@ -1623,7 +1623,7 @@ func (gcToolchain) linker() string { return tool(archChar + "l") } -func (gcToolchain) gc(b *builder, p *Package, archive, obj string, importArgs []string, gofiles []string) (ofile string, output []byte, err error) { +func (gcToolchain) gc(b *builder, p *Package, archive, obj string, asmhdr bool, importArgs []string, gofiles []string) (ofile string, output []byte, err error) { if archive != "" { ofile = archive } else { @@ -1660,6 +1660,9 @@ func (gcToolchain) gc(b *builder, p *Package, archive, obj string, importArgs [] if ofile == archive { args = append(args, "-pack") } + if asmhdr { + args = append(args, "-asmhdr", obj+"go_asm.h") + } for _, f := range gofiles { args = append(args, mkAbs(p.Dir, f)) } @@ -1824,10 +1827,7 @@ func (gcToolchain) ld(b *builder, p *Package, out string, allactions []*action, } func (gcToolchain) cc(b *builder, p *Package, objdir, ofile, cfile string) error { - inc := filepath.Join(goroot, "pkg", fmt.Sprintf("%s_%s", goos, goarch)) - cfile = mkAbs(p.Dir, cfile) - args := stringList(tool(archChar+"c"), "-F", "-V", "-w", "-trimpath", b.work, "-I", objdir, "-I", inc, "-o", ofile, buildCcflags, "-D", "GOOS_"+goos, "-D", "GOARCH_"+goarch, cfile) - return b.run(p.Dir, p.ImportPath, nil, args) + return fmt.Errorf("%s: C source files not supported without cgo", mkAbs(p.Dir, cfile)) } // The Gccgo toolchain. @@ -1851,7 +1851,7 @@ func (gccgoToolchain) linker() string { return gccgoBin } -func (gccgoToolchain) gc(b *builder, p *Package, archive, obj string, importArgs []string, gofiles []string) (ofile string, output []byte, err error) { +func (gccgoToolchain) gc(b *builder, p *Package, archive, obj string, asmhdr bool, importArgs []string, gofiles []string) (ofile string, output []byte, err error) { out := "_go_.o" ofile = obj + out gcargs := []string{"-g"} @@ -2217,11 +2217,14 @@ func (b *builder) cgo(p *Package, cgoExe, obj string, pcCFLAGS, pcLDFLAGS, gccfi outGo = append(outGo, gofiles...) // cc _cgo_defun.c - defunObj := obj + "_cgo_defun." + objExt - if err := buildToolchain.cc(b, p, obj, defunObj, defunC); err != nil { - return nil, nil, err + _, gccgo := buildToolchain.(gccgoToolchain) + if gccgo { + defunObj := obj + "_cgo_defun." + objExt + if err := buildToolchain.cc(b, p, obj, defunObj, defunC); err != nil { + return nil, nil, err + } + outObj = append(outObj, defunObj) } - outObj = append(outObj, defunObj) // gcc var linkobj []string @@ -2335,20 +2338,15 @@ func (b *builder) cgo(p *Package, cgoExe, obj string, pcCFLAGS, pcLDFLAGS, gccfi } // cgo -dynimport - importC := obj + "_cgo_import.c" + importGo := obj + "_cgo_import.go" cgoflags = []string{} if p.Standard && p.ImportPath == "runtime/cgo" { cgoflags = append(cgoflags, "-dynlinker") // record path to dynamic linker } - if err := b.run(p.Dir, p.ImportPath, nil, cgoExe, "-objdir", obj, "-dynimport", dynobj, "-dynout", importC, cgoflags); err != nil { - return nil, nil, err - } - - // cc _cgo_import.ARCH - importObj := obj + "_cgo_import." + objExt - if err := buildToolchain.cc(b, p, obj, importObj, importC); err != nil { + if err := b.run(p.Dir, p.ImportPath, nil, cgoExe, "-objdir", obj, "-dynpackage", p.Name, "-dynimport", dynobj, "-dynout", importGo, cgoflags); err != nil { return nil, nil, err } + outGo = append(outGo, importGo) ofile := obj + "_all.o" var gccObjs, nonGccObjs []string @@ -2382,7 +2380,7 @@ func (b *builder) cgo(p *Package, cgoExe, obj string, pcCFLAGS, pcLDFLAGS, gccfi // NOTE(rsc): The importObj is a 5c/6c/8c object and on Windows // must be processed before the gcc-generated objects. // Put it first. http://golang.org/issue/2601 - outObj = stringList(importObj, nonGccObjs, ofile) + outObj = stringList(nonGccObjs, ofile) return outGo, outObj, nil } @@ -2518,7 +2516,7 @@ func (b *builder) swigIntSize(obj string) (intsize string, err error) { p := goFilesPackage(srcs) - if _, _, e := buildToolchain.gc(b, p, "", obj, nil, srcs); e != nil { + if _, _, e := buildToolchain.gc(b, p, "", obj, false, nil, srcs); e != nil { return "32", nil } return "64", nil diff --git a/src/cmd/go/doc.go b/src/cmd/go/doc.go index cf3a54565..43a315944 100644 --- a/src/cmd/go/doc.go +++ b/src/cmd/go/doc.go @@ -590,7 +590,7 @@ Usage: Vet runs the Go vet command on the packages named by the import paths. -For more about vet, see 'godoc code.google.com/p/go.tools/cmd/vet'. +For more about vet, see 'godoc golang.org/x/tools/cmd/vet'. For more about specifying packages, see 'go help packages'. To run the vet tool with specific options, run 'go tool vet'. diff --git a/src/cmd/go/pkg.go b/src/cmd/go/pkg.go index e17326442..b71feb7a6 100644 --- a/src/cmd/go/pkg.go +++ b/src/cmd/go/pkg.go @@ -383,9 +383,10 @@ func findInternal(path string) (index int, ok bool) { type targetDir int const ( - toRoot targetDir = iota // to bin dir inside package root (default) - toTool // GOROOT/pkg/tool - toBin // GOROOT/bin + toRoot targetDir = iota // to bin dir inside package root (default) + toTool // GOROOT/pkg/tool + toBin // GOROOT/bin + stalePath // the old import path; fail to build ) // goTools is a map of Go program import path to install target directory. @@ -398,10 +399,14 @@ var goTools = map[string]targetDir{ "cmd/nm": toTool, "cmd/objdump": toTool, "cmd/pack": toTool, + "cmd/pprof": toTool, "cmd/yacc": toTool, - "code.google.com/p/go.tools/cmd/cover": toTool, - "code.google.com/p/go.tools/cmd/godoc": toBin, - "code.google.com/p/go.tools/cmd/vet": toTool, + "golang.org/x/tools/cmd/cover": toTool, + "golang.org/x/tools/cmd/godoc": toBin, + "golang.org/x/tools/cmd/vet": toTool, + "code.google.com/p/go.tools/cmd/cover": stalePath, + "code.google.com/p/go.tools/cmd/godoc": stalePath, + "code.google.com/p/go.tools/cmd/vet": stalePath, } // expandScanner expands a scanner.List error into all the errors in the list. @@ -462,6 +467,13 @@ func (p *Package) load(stk *importStack, bp *build.Package, err error) *Package } if p.Name == "main" { + // Report an error when the old code.google.com/p/go.tools paths are used. + if goTools[p.ImportPath] == stalePath { + newPath := strings.Replace(p.ImportPath, "code.google.com/p/go.", "golang.org/x/", 1) + e := fmt.Sprintf("the %v command has moved; use %v instead.", p.ImportPath, newPath) + p.Error = &PackageError{Err: e} + return p + } _, elem := filepath.Split(p.Dir) full := buildContext.GOOS + "_" + buildContext.GOARCH + "/" + elem if buildContext.GOOS != toolGOOS || buildContext.GOARCH != toolGOARCH { diff --git a/src/cmd/go/test.bash b/src/cmd/go/test.bash index 2b5230b1a..e0f066f18 100755 --- a/src/cmd/go/test.bash +++ b/src/cmd/go/test.bash @@ -433,20 +433,20 @@ TEST godoc installs into GOBIN d=$(mktemp -d -t testgoXXX) export GOPATH=$d mkdir $d/gobin -GOBIN=$d/gobin ./testgo get code.google.com/p/go.tools/cmd/godoc || ok=false +GOBIN=$d/gobin ./testgo get golang.org/x/tools/cmd/godoc || ok=false if [ ! -x $d/gobin/godoc ]; then echo did not install godoc to '$GOBIN' - GOBIN=$d/gobin ./testgo list -f 'Target: {{.Target}}' code.google.com/p/go.tools/cmd/godoc || true + GOBIN=$d/gobin ./testgo list -f 'Target: {{.Target}}' golang.org/x/tools/cmd/godoc || true ok=false fi TEST godoc installs into GOROOT GOROOT=$(./testgo env GOROOT) rm -f $GOROOT/bin/godoc -./testgo install code.google.com/p/go.tools/cmd/godoc || ok=false +./testgo install golang.org/x/tools/cmd/godoc || ok=false if [ ! -x $GOROOT/bin/godoc ]; then echo did not install godoc to '$GOROOT/bin' - ./testgo list -f 'Target: {{.Target}}' code.google.com/p/go.tools/cmd/godoc || true + ./testgo list -f 'Target: {{.Target}}' golang.org/x/tools/cmd/godoc || true ok=false fi @@ -561,8 +561,8 @@ fi TEST without GOPATH, go get fails d=$(mktemp -d -t testgoXXX) mkdir -p $d/src -if GOPATH= GOROOT=$d ./testgo get -d code.google.com/p/go.codereview/cmd/hgpatch ; then - echo 'go get code.google.com/p/go.codereview/cmd/hgpatch should not succeed with $GOPATH unset' +if GOPATH= GOROOT=$d ./testgo get -d golang.org/x/codereview/cmd/hgpatch ; then + echo 'go get golang.org/x/codereview/cmd/hgpatch should not succeed with $GOPATH unset' ok=false fi rm -rf $d @@ -571,8 +571,8 @@ rm -rf $d TEST with GOPATH=GOROOT, go get fails d=$(mktemp -d -t testgoXXX) mkdir -p $d/src -if GOPATH=$d GOROOT=$d ./testgo get -d code.google.com/p/go.codereview/cmd/hgpatch ; then - echo 'go get code.google.com/p/go.codereview/cmd/hgpatch should not succeed with GOPATH=$GOROOT' +if GOPATH=$d GOROOT=$d ./testgo get -d golang.org/x/codereview/cmd/hgpatch ; then + echo 'go get golang.org/x/codereview/cmd/hgpatch should not succeed with GOPATH=$GOROOT' ok=false fi rm -rf $d @@ -728,7 +728,7 @@ elif ! grep "case-insensitive file name collision" $d/out >/dev/null; then fi TEST go get cover -./testgo get code.google.com/p/go.tools/cmd/cover || ok=false +./testgo get golang.org/x/tools/cmd/cover || ok=false unset GOPATH rm -rf $d diff --git a/src/cmd/go/tool.go b/src/cmd/go/tool.go index 6d26f7a4b..c96161e0f 100644 --- a/src/cmd/go/tool.go +++ b/src/cmd/go/tool.go @@ -53,7 +53,7 @@ func tool(toolName string) string { // Give a nice message if there is no tool with that name. if _, err := os.Stat(toolPath); err != nil { if isInGoToolsRepo(toolName) { - fmt.Fprintf(os.Stderr, "go tool: no such tool %q; to install:\n\tgo get code.google.com/p/go.tools/cmd/%s\n", toolName, toolName) + fmt.Fprintf(os.Stderr, "go tool: no such tool %q; to install:\n\tgo get golang.org/x/tools/cmd/%s\n", toolName, toolName) } else { fmt.Fprintf(os.Stderr, "go tool: no such tool %q\n", toolName) } diff --git a/src/cmd/go/vet.go b/src/cmd/go/vet.go index de7befc61..02ff54b2a 100644 --- a/src/cmd/go/vet.go +++ b/src/cmd/go/vet.go @@ -17,7 +17,7 @@ var cmdVet = &Command{ Long: ` Vet runs the Go vet command on the packages named by the import paths. -For more about vet, see 'godoc code.google.com/p/go.tools/cmd/vet'. +For more about vet, see 'godoc golang.org/x/tools/cmd/vet'. For more about specifying packages, see 'go help packages'. To run the vet tool with specific options, run 'go tool vet'. diff --git a/src/cmd/internal/objfile/disasm.go b/src/cmd/internal/objfile/disasm.go new file mode 100644 index 000000000..1a339c321 --- /dev/null +++ b/src/cmd/internal/objfile/disasm.go @@ -0,0 +1,248 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package objfile + +import ( + "bufio" + "debug/gosym" + "encoding/binary" + "fmt" + "io" + "regexp" + "sort" + "strings" + "text/tabwriter" + + "cmd/internal/rsc.io/arm/armasm" + "cmd/internal/rsc.io/x86/x86asm" +) + +// Disasm is a disassembler for a given File. +type Disasm struct { + syms []Sym //symbols in file, sorted by address + pcln *gosym.Table // pcln table + text []byte // bytes of text segment (actual instructions) + textStart uint64 // start PC of text + textEnd uint64 // end PC of text + goarch string // GOARCH string + disasm disasmFunc // disassembler function for goarch + byteOrder binary.ByteOrder // byte order for goarch +} + +// Disasm returns a disassembler for the file f. +func (f *File) Disasm() (*Disasm, error) { + syms, err := f.Symbols() + if err != nil { + return nil, err + } + + pcln, err := f.PCLineTable() + if err != nil { + return nil, err + } + + textStart, textBytes, err := f.Text() + if err != nil { + return nil, err + } + + goarch := f.GOARCH() + disasm := disasms[goarch] + byteOrder := byteOrders[goarch] + if disasm == nil || byteOrder == nil { + return nil, fmt.Errorf("unsupported architecture") + } + + // Filter out section symbols, overwriting syms in place. + keep := syms[:0] + for _, sym := range syms { + switch sym.Name { + case "runtime.text", "text", "_text", "runtime.etext", "etext", "_etext": + // drop + default: + keep = append(keep, sym) + } + } + syms = keep + d := &Disasm{ + syms: syms, + pcln: pcln, + text: textBytes, + textStart: textStart, + textEnd: textStart + uint64(len(textBytes)), + goarch: goarch, + disasm: disasm, + byteOrder: byteOrder, + } + + return d, nil +} + +// lookup finds the symbol name containing addr. +func (d *Disasm) lookup(addr uint64) (name string, base uint64) { + i := sort.Search(len(d.syms), func(i int) bool { return addr < d.syms[i].Addr }) + if i > 0 { + s := d.syms[i-1] + if s.Addr != 0 && s.Addr <= addr && addr < s.Addr+uint64(s.Size) { + return s.Name, s.Addr + } + } + return "", 0 +} + +// base returns the final element in the path. +// It works on both Windows and Unix paths, +// regardless of host operating system. +func base(path string) string { + path = path[strings.LastIndex(path, "/")+1:] + path = path[strings.LastIndex(path, `\`)+1:] + return path +} + +// Print prints a disassembly of the file to w. +// If filter is non-nil, the disassembly only includes functions with names matching filter. +// The disassembly only includes functions that overlap the range [start, end). +func (d *Disasm) Print(w io.Writer, filter *regexp.Regexp, start, end uint64) { + if start < d.textStart { + start = d.textStart + } + if end > d.textEnd { + end = d.textEnd + } + printed := false + bw := bufio.NewWriter(w) + for _, sym := range d.syms { + symStart := sym.Addr + symEnd := sym.Addr + uint64(sym.Size) + if sym.Code != 'T' && sym.Code != 't' || + symStart < d.textStart || + symEnd <= start || end <= symStart || + filter != nil && !filter.MatchString(sym.Name) { + continue + } + if printed { + fmt.Fprintf(bw, "\n") + } + printed = true + + file, _, _ := d.pcln.PCToLine(sym.Addr) + fmt.Fprintf(bw, "TEXT %s(SB) %s\n", sym.Name, file) + + tw := tabwriter.NewWriter(bw, 1, 8, 1, '\t', 0) + if symEnd > end { + symEnd = end + } + code := d.text[:end-d.textStart] + d.Decode(symStart, symEnd, func(pc, size uint64, file string, line int, text string) { + i := pc - d.textStart + fmt.Fprintf(tw, "\t%s:%d\t%#x\t", base(file), line, pc) + if size%4 != 0 || d.goarch == "386" || d.goarch == "amd64" { + // Print instruction as bytes. + fmt.Fprintf(tw, "%x", code[i:i+size]) + } else { + // Print instruction as 32-bit words. + for j := uint64(0); j < size; j += 4 { + if j > 0 { + fmt.Fprintf(tw, " ") + } + fmt.Fprintf(tw, "%08x", d.byteOrder.Uint32(code[i+j:])) + } + } + fmt.Fprintf(tw, "\t%s\n", text) + }) + tw.Flush() + } + bw.Flush() +} + +// Decode disassembles the text segment range [start, end), calling f for each instruction. +func (d *Disasm) Decode(start, end uint64, f func(pc, size uint64, file string, line int, text string)) { + if start < d.textStart { + start = d.textStart + } + if end > d.textEnd { + end = d.textEnd + } + code := d.text[:end-d.textStart] + lookup := d.lookup + for pc := start; pc < end; { + i := pc - d.textStart + text, size := d.disasm(code[i:], pc, lookup) + file, line, _ := d.pcln.PCToLine(pc) + f(pc, uint64(size), file, line, text) + pc += uint64(size) + } +} + +type lookupFunc func(addr uint64) (sym string, base uint64) +type disasmFunc func(code []byte, pc uint64, lookup lookupFunc) (text string, size int) + +func disasm_386(code []byte, pc uint64, lookup lookupFunc) (string, int) { + return disasm_x86(code, pc, lookup, 32) +} + +func disasm_amd64(code []byte, pc uint64, lookup lookupFunc) (string, int) { + return disasm_x86(code, pc, lookup, 64) +} + +func disasm_x86(code []byte, pc uint64, lookup lookupFunc, arch int) (string, int) { + inst, err := x86asm.Decode(code, 64) + var text string + size := inst.Len + if err != nil || size == 0 || inst.Op == 0 { + size = 1 + text = "?" + } else { + text = x86asm.Plan9Syntax(inst, pc, lookup) + } + return text, size +} + +type textReader struct { + code []byte + pc uint64 +} + +func (r textReader) ReadAt(data []byte, off int64) (n int, err error) { + if off < 0 || uint64(off) < r.pc { + return 0, io.EOF + } + d := uint64(off) - r.pc + if d >= uint64(len(r.code)) { + return 0, io.EOF + } + n = copy(data, r.code[d:]) + if n < len(data) { + err = io.ErrUnexpectedEOF + } + return +} + +func disasm_arm(code []byte, pc uint64, lookup lookupFunc) (string, int) { + inst, err := armasm.Decode(code, armasm.ModeARM) + var text string + size := inst.Len + if err != nil || size == 0 || inst.Op == 0 { + size = 4 + text = "?" + } else { + text = armasm.Plan9Syntax(inst, pc, lookup, textReader{code, pc}) + } + return text, size +} + +var disasms = map[string]disasmFunc{ + "386": disasm_386, + "amd64": disasm_amd64, + "arm": disasm_arm, +} + +var byteOrders = map[string]binary.ByteOrder{ + "386": binary.LittleEndian, + "amd64": binary.LittleEndian, + "arm": binary.LittleEndian, + "power64": binary.BigEndian, + "power64le": binary.LittleEndian, +} diff --git a/src/cmd/internal/objfile/objfile.go b/src/cmd/internal/objfile/objfile.go index 3d4a5d27c..9227ef387 100644 --- a/src/cmd/internal/objfile/objfile.go +++ b/src/cmd/internal/objfile/objfile.go @@ -9,6 +9,7 @@ import ( "debug/gosym" "fmt" "os" + "sort" ) type rawFile interface { @@ -62,9 +63,20 @@ func (f *File) Close() error { } func (f *File) Symbols() ([]Sym, error) { - return f.raw.symbols() + syms, err := f.raw.symbols() + if err != nil { + return nil, err + } + sort.Sort(byAddr(syms)) + return syms, nil } +type byAddr []Sym + +func (x byAddr) Less(i, j int) bool { return x[i].Addr < x[j].Addr } +func (x byAddr) Len() int { return len(x) } +func (x byAddr) Swap(i, j int) { x[i], x[j] = x[j], x[i] } + func (f *File) PCLineTable() (*gosym.Table, error) { textStart, symtab, pclntab, err := f.raw.pcln() if err != nil { diff --git a/src/cmd/objdump/main.go b/src/cmd/objdump/main.go index 0f125c98b..708a85370 100644 --- a/src/cmd/objdump/main.go +++ b/src/cmd/objdump/main.go @@ -32,24 +32,15 @@ package main import ( - "bufio" - "debug/gosym" - "encoding/binary" "flag" "fmt" - "io" "log" "os" "regexp" - "sort" "strconv" "strings" - "text/tabwriter" "cmd/internal/objfile" - - "cmd/internal/rsc.io/arm/armasm" - "cmd/internal/rsc.io/x86/x86asm" ) var symregexp = flag.String("s", "", "only dump symbols matching this regexp") @@ -87,227 +78,30 @@ func main() { log.Fatal(err) } - syms, err := f.Symbols() + dis, err := f.Disasm() if err != nil { - log.Fatalf("reading %s: %v", flag.Arg(0), err) + log.Fatal("disassemble %s: %v", flag.Arg(0), err) } - tab, err := f.PCLineTable() - if err != nil { - log.Fatalf("reading %s: %v", flag.Arg(0), err) - } - - textStart, textBytes, err := f.Text() - if err != nil { - log.Fatalf("reading %s: %v", flag.Arg(0), err) - } - - goarch := f.GOARCH() - - disasm := disasms[goarch] - if disasm == nil { - log.Fatalf("reading %s: unknown architecture", flag.Arg(0)) - } - - // Filter out section symbols, overwriting syms in place. - keep := syms[:0] - for _, sym := range syms { - switch sym.Name { - case "runtime.text", "text", "_text", "runtime.etext", "etext", "_etext": - // drop - default: - keep = append(keep, sym) - } - } - syms = keep - - sort.Sort(ByAddr(syms)) - lookup := func(addr uint64) (string, uint64) { - i := sort.Search(len(syms), func(i int) bool { return addr < syms[i].Addr }) - if i > 0 { - s := syms[i-1] - if s.Addr != 0 && s.Addr <= addr && addr < s.Addr+uint64(s.Size) { - return s.Name, s.Addr - } - } - return "", 0 - } - - if flag.NArg() == 1 { - // disassembly of entire object - our format - dump(tab, lookup, disasm, goarch, syms, textBytes, textStart) + switch flag.NArg() { + default: + usage() + case 1: + // disassembly of entire object + dis.Print(os.Stdout, symRE, 0, ^uint64(0)) os.Exit(0) - } - - // disassembly of specific piece of object - gnu objdump format for pprof - gnuDump(tab, lookup, disasm, textBytes, textStart) - os.Exit(0) -} - -// base returns the final element in the path. -// It works on both Windows and Unix paths. -func base(path string) string { - path = path[strings.LastIndex(path, "/")+1:] - path = path[strings.LastIndex(path, `\`)+1:] - return path -} - -func dump(tab *gosym.Table, lookup lookupFunc, disasm disasmFunc, goarch string, syms []objfile.Sym, textData []byte, textStart uint64) { - stdout := bufio.NewWriter(os.Stdout) - defer stdout.Flush() - - printed := false - for _, sym := range syms { - if (sym.Code != 'T' && sym.Code != 't') || sym.Size == 0 || sym.Addr < textStart || symRE != nil && !symRE.MatchString(sym.Name) { - continue - } - if sym.Addr >= textStart+uint64(len(textData)) || sym.Addr+uint64(sym.Size) > textStart+uint64(len(textData)) { - break - } - if printed { - fmt.Fprintf(stdout, "\n") - } else { - printed = true - } - file, _, _ := tab.PCToLine(sym.Addr) - fmt.Fprintf(stdout, "TEXT %s(SB) %s\n", sym.Name, file) - tw := tabwriter.NewWriter(stdout, 1, 8, 1, '\t', 0) - start := sym.Addr - end := sym.Addr + uint64(sym.Size) - for pc := start; pc < end; { - i := pc - textStart - text, size := disasm(textData[i:end-textStart], pc, lookup) - file, line, _ := tab.PCToLine(pc) - - // ARM is word-based, so show actual word hex, not byte hex. - // Since ARM is little endian, they're different. - if goarch == "arm" && size == 4 { - fmt.Fprintf(tw, "\t%s:%d\t%#x\t%08x\t%s\n", base(file), line, pc, binary.LittleEndian.Uint32(textData[i:i+uint64(size)]), text) - } else { - fmt.Fprintf(tw, "\t%s:%d\t%#x\t%x\t%s\n", base(file), line, pc, textData[i:i+uint64(size)], text) - } - pc += uint64(size) - } - tw.Flush() - } -} - -func disasm_386(code []byte, pc uint64, lookup lookupFunc) (string, int) { - return disasm_x86(code, pc, lookup, 32) -} - -func disasm_amd64(code []byte, pc uint64, lookup lookupFunc) (string, int) { - return disasm_x86(code, pc, lookup, 64) -} - -func disasm_x86(code []byte, pc uint64, lookup lookupFunc, arch int) (string, int) { - inst, err := x86asm.Decode(code, 64) - var text string - size := inst.Len - if err != nil || size == 0 || inst.Op == 0 { - size = 1 - text = "?" - } else { - text = x86asm.Plan9Syntax(inst, pc, lookup) - } - return text, size -} - -type textReader struct { - code []byte - pc uint64 -} - -func (r textReader) ReadAt(data []byte, off int64) (n int, err error) { - if off < 0 || uint64(off) < r.pc { - return 0, io.EOF - } - d := uint64(off) - r.pc - if d >= uint64(len(r.code)) { - return 0, io.EOF - } - n = copy(data, r.code[d:]) - if n < len(data) { - err = io.ErrUnexpectedEOF - } - return -} - -func disasm_arm(code []byte, pc uint64, lookup lookupFunc) (string, int) { - inst, err := armasm.Decode(code, armasm.ModeARM) - var text string - size := inst.Len - if err != nil || size == 0 || inst.Op == 0 { - size = 4 - text = "?" - } else { - text = armasm.Plan9Syntax(inst, pc, lookup, textReader{code, pc}) - } - return text, size -} - -var disasms = map[string]disasmFunc{ - "386": disasm_386, - "amd64": disasm_amd64, - "arm": disasm_arm, -} - -func gnuDump(tab *gosym.Table, lookup lookupFunc, disasm disasmFunc, textData []byte, textStart uint64) { - start, err := strconv.ParseUint(strings.TrimPrefix(flag.Arg(1), "0x"), 16, 64) - if err != nil { - log.Fatalf("invalid start PC: %v", err) - } - end, err := strconv.ParseUint(strings.TrimPrefix(flag.Arg(2), "0x"), 16, 64) - if err != nil { - log.Fatalf("invalid end PC: %v", err) - } - if start < textStart { - start = textStart - } - if end < start { - end = start - } - if end > textStart+uint64(len(textData)) { - end = textStart + uint64(len(textData)) - } - - stdout := bufio.NewWriter(os.Stdout) - defer stdout.Flush() - - // For now, find spans of same PC/line/fn and - // emit them as having dummy instructions. - var ( - spanPC uint64 - spanFile string - spanLine int - spanFn *gosym.Func - ) - flush := func(endPC uint64) { - if spanPC == 0 { - return - } - fmt.Fprintf(stdout, "%s:%d\n", spanFile, spanLine) - for pc := spanPC; pc < endPC; { - text, size := disasm(textData[pc-textStart:], pc, lookup) - fmt.Fprintf(stdout, " %x: %s\n", pc, text) - pc += uint64(size) + case 3: + // disassembly of PC range + start, err := strconv.ParseUint(strings.TrimPrefix(flag.Arg(1), "0x"), 16, 64) + if err != nil { + log.Fatalf("invalid start PC: %v", err) } - spanPC = 0 - } - - for pc := start; pc < end; pc++ { - file, line, fn := tab.PCToLine(pc) - if file != spanFile || line != spanLine || fn != spanFn { - flush(pc) - spanPC, spanFile, spanLine, spanFn = pc, file, line, fn + end, err := strconv.ParseUint(strings.TrimPrefix(flag.Arg(2), "0x"), 16, 64) + if err != nil { + log.Fatalf("invalid end PC: %v", err) } + dis.Print(os.Stdout, symRE, start, end) + os.Exit(0) } - flush(end) } - -type ByAddr []objfile.Sym - -func (x ByAddr) Less(i, j int) bool { return x[i].Addr < x[j].Addr } -func (x ByAddr) Len() int { return len(x) } -func (x ByAddr) Swap(i, j int) { x[i], x[j] = x[j], x[i] } diff --git a/src/cmd/objdump/objdump_test.go b/src/cmd/objdump/objdump_test.go index 5047f9aa8..bd09ae9f9 100644 --- a/src/cmd/objdump/objdump_test.go +++ b/src/cmd/objdump/objdump_test.go @@ -5,117 +5,15 @@ package main import ( - "bufio" - "bytes" - "fmt" "io/ioutil" "os" "os/exec" "path/filepath" "runtime" - "strconv" "strings" "testing" ) -func loadSyms(t *testing.T) map[string]string { - switch runtime.GOOS { - case "android", "nacl": - t.Skipf("skipping on %s", runtime.GOOS) - } - - cmd := exec.Command("go", "tool", "nm", os.Args[0]) - out, err := cmd.CombinedOutput() - if err != nil { - t.Fatalf("go tool nm %v: %v\n%s", os.Args[0], err, string(out)) - } - syms := make(map[string]string) - scanner := bufio.NewScanner(bytes.NewReader(out)) - for scanner.Scan() { - f := strings.Fields(scanner.Text()) - if len(f) < 3 { - continue - } - syms[f[2]] = f[0] - } - if err := scanner.Err(); err != nil { - t.Fatalf("error reading symbols: %v", err) - } - return syms -} - -func runObjDump(t *testing.T, exe, startaddr, endaddr string) (path, lineno string) { - switch runtime.GOOS { - case "android", "nacl": - t.Skipf("skipping on %s", runtime.GOOS) - } - switch runtime.GOARCH { - case "power64", "power64le": - t.Skipf("skipping on %s, issue 9039", runtime.GOARCH) - } - - cmd := exec.Command(exe, os.Args[0], startaddr, endaddr) - out, err := cmd.CombinedOutput() - if err != nil { - t.Fatalf("go tool objdump %v: %v\n%s", os.Args[0], err, string(out)) - } - f := strings.Split(string(out), "\n") - if len(f) < 1 { - t.Fatal("objdump output must have at least one line") - } - pathAndLineNo := f[0] - f = strings.Split(pathAndLineNo, ":") - if runtime.GOOS == "windows" { - switch len(f) { - case 2: - return f[0], f[1] - case 3: - return f[0] + ":" + f[1], f[2] - default: - t.Fatalf("no line number found in %q", pathAndLineNo) - } - } - if len(f) != 2 { - t.Fatalf("no line number found in %q", pathAndLineNo) - } - return f[0], f[1] -} - -func testObjDump(t *testing.T, exe, startaddr, endaddr string, line int) { - srcPath, srcLineNo := runObjDump(t, exe, startaddr, endaddr) - fi1, err := os.Stat("objdump_test.go") - if err != nil { - t.Fatalf("Stat failed: %v", err) - } - fi2, err := os.Stat(srcPath) - if err != nil { - t.Fatalf("Stat failed: %v", err) - } - if !os.SameFile(fi1, fi2) { - t.Fatalf("objdump_test.go and %s are not same file", srcPath) - } - if srcLineNo != fmt.Sprint(line) { - t.Fatalf("line number = %v; want %d", srcLineNo, line) - } -} - -func TestObjDump(t *testing.T) { - _, _, line, _ := runtime.Caller(0) - syms := loadSyms(t) - - tmp, exe := buildObjdump(t) - defer os.RemoveAll(tmp) - - startaddr := syms["cmd/objdump.TestObjDump"] - addr, err := strconv.ParseUint(startaddr, 16, 64) - if err != nil { - t.Fatalf("invalid start address %v: %v", startaddr, err) - } - endaddr := fmt.Sprintf("%x", addr+10) - testObjDump(t, exe, startaddr, endaddr, line-1) - testObjDump(t, exe, "0x"+startaddr, "0x"+endaddr, line-1) -} - func buildObjdump(t *testing.T) (tmp, exe string) { switch runtime.GOOS { case "android", "nacl": diff --git a/src/cmd/pprof/README b/src/cmd/pprof/README new file mode 100644 index 000000000..a728ef235 --- /dev/null +++ b/src/cmd/pprof/README @@ -0,0 +1,8 @@ +The pprof in this directory is adapted from the pprof used inside Google +for C++, Java, and Go programs. Because it was developed for that broader +context, it is overgeneralized when used here for the specific use case +of profiling standard Go programs. However, we've left the abstractions +intact in order to share updates between this copy and Google's internal one. + +Please do not take the level of abstraction in this program as an example +to follow in your own. diff --git a/src/cmd/pprof/doc.go b/src/cmd/pprof/doc.go new file mode 100644 index 000000000..c6ff11d10 --- /dev/null +++ b/src/cmd/pprof/doc.go @@ -0,0 +1,12 @@ +// Copyright 2014 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// Pprof interprets and displays profiles of Go programs. +// +// Usage: +// +// go tool pprof binary profile +// +// For more information, see http://blog.golang.org/profiling-go-programs. +package main diff --git a/src/cmd/pprof/pprof.go b/src/cmd/pprof/pprof.go index 89a5bb7d2..44f4f6cb7 100644 --- a/src/cmd/pprof/pprof.go +++ b/src/cmd/pprof/pprof.go @@ -11,6 +11,7 @@ import ( "os" "regexp" "strings" + "sync" "cmd/internal/objfile" "cmd/pprof/internal/commands" @@ -100,7 +101,10 @@ func (flags) ExtraUsage() string { // objTool implements plugin.ObjTool using Go libraries // (instead of invoking GNU binutils). -type objTool struct{} +type objTool struct { + mu sync.Mutex + disasmCache map[string]*objfile.Disasm +} func (*objTool) Open(name string, start uint64) (plugin.ObjFile, error) { of, err := objfile.Open(name) @@ -119,8 +123,39 @@ func (*objTool) Demangle(names []string) (map[string]string, error) { return make(map[string]string), nil } -func (*objTool) Disasm(file string, start, end uint64) ([]plugin.Inst, error) { - return nil, fmt.Errorf("disassembly not supported") +func (t *objTool) Disasm(file string, start, end uint64) ([]plugin.Inst, error) { + d, err := t.cachedDisasm(file) + if err != nil { + return nil, err + } + var asm []plugin.Inst + d.Decode(start, end, func(pc, size uint64, file string, line int, text string) { + asm = append(asm, plugin.Inst{Addr: pc, File: file, Line: line, Text: text}) + }) + return asm, nil +} + +func (t *objTool) cachedDisasm(file string) (*objfile.Disasm, error) { + t.mu.Lock() + defer t.mu.Unlock() + if t.disasmCache == nil { + t.disasmCache = make(map[string]*objfile.Disasm) + } + d := t.disasmCache[file] + if d != nil { + return d, nil + } + f, err := objfile.Open(file) + if err != nil { + return nil, err + } + d, err = f.Disasm() + f.Close() + if err != nil { + return nil, err + } + t.disasmCache[file] = d + return d, nil } func (*objTool) SetConfig(config string) { |