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-rw-r--r--sim/h8300/writecode.c1033
1 files changed, 0 insertions, 1033 deletions
diff --git a/sim/h8300/writecode.c b/sim/h8300/writecode.c
deleted file mode 100644
index ea5c8ac3405..00000000000
--- a/sim/h8300/writecode.c
+++ /dev/null
@@ -1,1033 +0,0 @@
-/* Code generator for the Hitachi H8/300 architecture simulator.
-
- Written by Steve Chamberlain of Cygnus Support.
- sac@cygnus.com
-
- This file is part of H8/300 sim
-
-
- THIS SOFTWARE IS NOT COPYRIGHTED
-
- Cygnus offers the following for use in the public domain. Cygnus
- makes no warranty with regard to the software or it's performance
- and the user accepts the software "AS IS" with all faults.
-
- CYGNUS DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD TO
- THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
- MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
-
-*/
-
-/* This program reads the H8/300 opcode table and writes out
- a large switch statement to understand the opcodes (with ifs if
- there is more than one opcode per case) and code to do the stuff */
-
-#include <stdio.h>
-
-#define DEFINE_TABLE
-#define INSIM
-#include"opcode/h8300.h"
-
-#define MAXSAME 140
-
-#define PTWO 256
-static struct h8_opcode *h8_opcodes_sorted[PTWO][MAXSAME];
-
-char *cs = "/*";
-char *ce = "*/";
-
-/* How to get at nibble n from the instruction */
-char *nibs[] =
-{
- "foo",
- "(b0&0xf)",
- "((b1>>4)&0xf)",
- "((b1)&0xf)",
- "((pc[1]>>12)&0xf)",
- "((pc[1]>>8)&0xf)",
- "((pc[1]>>4)&0xf)",
- "((pc[1])&0xf)",
- 0, 0};
-
-/* how to get at the 3 bit immediate in the instruction */
-char *imm3[] =
-{"foo",
- "foo",
- "((b1>>4)&0x7)",
- "foo",
- "foo",
- "foo",
- "(pc[1]>>4)&0x7"};
-
-/* How to get at a byte register from an index in the instruction at
- nibble n */
-char *breg[] =
-{"foo",
- "*(blow[b0])",
- "*(bhigh[b1])",
- "*(blow[b1])",
- 0, 0,
- "*(bhigh[pc[1]>>8])"};
-
-/* How to get at a word register from an index in the instruction at
- nibble n */
-
-char *wreg[] =
-{"foo",
- "*(wlow[b0])",
- "*(whigh[b1])",
- "*(wlow[b1])"};
-
-#define sorted_key noperands
-
-/* sort the opcode table into h8_opcodes_sorted[0..255] */
-static void
-init ()
-{
- unsigned int i;
- struct h8_opcode *p;
-
- for (p = h8_opcodes; p->name; p++)
- {
- int n1 = 0;
- int n2 = 0;
- int j;
-#if 0
- for (j = 0; p->data.nib[j] != E; j++)
- {
- if ((int) p->data.nib[j] == ABS16ORREL8SRC)
- p->data.nib[j] = ABS16SRC;
- if ((int) p->data.nib[j] == ABS16OR8SRC)
- p->data.nib[j] = ABS16SRC;
- if ((int) p->data.nib[j] == ABS16OR8DST)
- p->data.nib[j] = ABS16DST;
- }
-#endif
-
- if ((int) p->data.nib[0] < 16)
- {
- n1 = (int) p->data.nib[0];
- }
- else
- n1 = 0;
- if ((int) p->data.nib[1] < 16)
- {
- n2 = (int) p->data.nib[1];
- }
- else
- n2 = 0;
- for (i = 0; i < MAXSAME; i++)
- {
- int j = /* ((n3 >> 3) * 512) + ((n4 >> 3) * 256) + */ n1 * 16 + n2;
-
- if (h8_opcodes_sorted[j][i] == (struct h8_opcode *) NULL)
- {
- h8_opcodes_sorted[j][i] = p;
- p->sorted_key = j;
- break;
- }
- }
-
- if (i == MAXSAME)
- abort ();
-
- /* Just make sure there are an even number of nibbles in it, and
- that the count is the same s the length */
- for (i = 0; p->data.nib[i] != E; i++)
- /*EMPTY*/ ;
- if (i & 1)
- abort ();
- p->length = i / 2;
- }
- for (i = 0; i < PTWO; i++)
- {
- if (h8_opcodes_sorted[i][0])
- p = h8_opcodes_sorted[i][0];
- else
- h8_opcodes_sorted[i][0] = p;
- }
-}
-
-/* decode the lvalues, creating a pointer in real space to object -
- remember if the thing has to be swapped out of where it is */
-
-
-int swap[2];
-
-lval (p)
- struct h8_opcode *p;
-{
- int i;
-
- for (i = 0; p->data.nib[i] != E; i++)
- {
- int x = p->data.nib[i];
- int size;
- int op;
- op = (x & DST) ? 1 : 0;
-
- switch (x & SIZE)
- {
- case L_32:
- size = 32;
- break;
- case L_16:
- size = 16;
- break;
- case L_8:
- size = 8;
- break;
- default:
- size = 1234;
- }
-
- if (x & REG)
- {
- printf ("ir%d = GET_LVAL_%d_REG(%d);\n", op, size, i);
- }
- else if (x & IMM)
- {
- printf ("/* Imm has no lvalue */\n");
- }
-
- }
-
-
-
-}
-
-void
-decode (p, fetch, size)
- struct h8_opcode *p;
- int fetch;
- int size;
-{
- if (fetch)
- {
- lval (p);
- }
-
-}
-
-
-
-static void
-esleep ()
-{
- printf ("saved_state.exception = SIGSTOP;\n");
-}
-
-static void
-mov (p, s, sz)
- struct h8_opcode *p;
- char *s;
- int sz;
-{
- printf ("dst = srca;\n");
-}
-
-static void
-andc (p)
- struct h8_opcode *p;
-{
- printf ("SET_CCR(GET_CCR() & srca);\n");
-}
-
-static void
-addx (p)
- struct h8_opcode *p;
-{
- printf ("dst = srca + srcb+ (c != 0);\n");
-}
-
-static void
-subx (p)
- struct h8_opcode *p;
-{
- printf ("dst = srcb - srca - (c != 0);\n");
-}
-
-static void
-add (p, s, sz)
- struct h8_opcode *p;
- char *s;
- int sz;
-{
- printf ("%s;\n", s);
-}
-
-static void
-adds (p, s)
- struct h8_opcode *p;
- char *s;
-{
- printf ("%s;\n", s);
-}
-
-static void
-bra (p, a)
- struct h8_opcode *p;
- char *a;
-{
- printf ("if (%s) npc += ((char )b1)>>1;\n", a);
-}
-
-static void
-bsr (p, a)
- struct h8_opcode *p;
- char *a;
-{
- printf ("reg[7]-=2;\n");
- printf ("tmp = reg[7];\n");
- printf ("SET_WORD_MEM(tmp, (npc-saved_state.mem)*2);\n");
- printf ("npc += ((char)b1)>>1;\n");
-}
-
-static void
-cmp (p, a, s)
- struct h8_opcode *p;
- char *a;
- int s;
-{
- decode (p, 1, s);
- printf ("srca = -srca;\n");
- printf ("dst = srca + srcb;\n");
-}
-
-static
-void
-jsr (p, a, s)
- struct h8_opcode *p;
- char *a;
- int s;
-{
- printf ("if (b1 == 0xc4) {\n");
- printf ("printf(\"%%c\", reg[2]);\n");
- printf ("}\n");
- printf ("else {\n");
- printf ("reg[7]-=2;\n");
- printf ("tmp = reg[7];\n");
- printf ("SET_WORD_MEM(tmp, (npc-saved_state.mem)*2);\n");
- printf ("npc = (lval>>1) + saved_state.mem;\n");
- printf ("}");
-}
-
-static void
-jmp (p, a, s)
- struct h8_opcode *p;
- char *a;
- int s;
-{
- printf ("npc = (lval>>1) + saved_state.mem;\n");
-}
-
-static void
-rts (p, a, s)
- struct h8_opcode *p;
- char *a;
- int s;
-{
- printf ("tmp = reg[7];\n");
- printf ("reg[7]+=2;\n");
- printf ("npc = saved_state.mem + (WORD_MEM(tmp)>>1);\n");
-}
-
-static void
-rte (p, a, s)
- struct h8_opcode *p;
- char *a;
- int s;
-{
- printf ("reg[7]+=2;\n");
- printf ("tmp = reg[7];\n");
- printf ("reg[7]+=2;\n");
- printf ("SET_CCR(tmp);\n");
- printf ("npc = saved_state.mem + (WORD_MEM(tmp)>>1);\n");
-}
-
-static void
-setf (p, a, s)
- struct h8_opcode *p;
- char *a;
- int s;
-{
- printf ("tmp = GET_CCR();\n");
- printf ("tmp %s= srca;\n", a);
-}
-
-static void
-bpt (p, a, s)
- struct h8_opcode *p;
- char *a;
- int s;
-{
- printf ("saved_state.exception = SIGTRAP;\n");
- printf ("npc = pc;\n");
-}
-
-static void
-log (p, a, s)
- struct h8_opcode *p;
- char *a;
- int s;
-{
- printf ("dst = srcb %s srca;\n", a);
-}
-
-static void
-ulog (p, a, s)
- struct h8_opcode *p;
- char *a;
- int s;
-{
- printf ("dst = %s srcb ;\n", a);
-}
-
-static void
-nop ()
-{
-}
-
-static void
-rotl ()
-{
- printf ("c = srcb & 0x80;\n");
- printf ("dst = srcb << 1;\n");
- printf ("if (c) dst|=1;\n");
-}
-
-static void
-rotr ()
-{
- printf ("c = srcb & 1;\n");
- printf ("dst = srcb >> 1;\n");
- printf ("if (c) dst|=0x80;\n");
-}
-
-static void
-rotxl ()
-{
- printf ("tmp = srcb & 0x80;\n");
- printf ("dst = srcb << 1;\n");
- printf ("if (c) dst|=1;\n");
- printf ("c = tmp;\n");
-}
-
-static void
-rotxr ()
-{
- printf ("tmp = srcb & 1;\n");
- printf ("dst = srcb >> 1;\n");
- printf ("if (c) dst|=0x80;\n");
- printf ("c = tmp;\n");
-}
-
-static void
-shal ()
-{
- printf ("c = srcb&0x80;\n");
- printf ("dst = srcb << 1;\n");
-}
-
-static
-void
-shar ()
-{
- printf ("c = srcb&0x1;\n");
- printf ("if (srcb&0x80) dst = (srcb>>1) | 0x80;\n");
- printf ("else dst = (srcb>>1) &~ 0x80;\n");
-}
-
-static
-void
-shll ()
-{
- printf ("c = srcb&0x80;\n");
- printf ("dst = srcb << 1;\n");
-}
-
-static
-void
-shlr ()
-{
- printf ("c = srcb&0x1;\n");
- printf ("dst = (srcb>>1) &~ 0x80;\n");
-}
-
-static
-void
-divxu ()
-{
- printf ("srca = %s;\n", breg[2]);
- printf ("srcb = %s;\n", wreg[3]);
- printf ("n = srca & 0x80;\n");
- printf ("z = !srca;\n");
- printf ("if (srca) dst = srcb / srca;tmp = srcb %% srca;\n");
- printf ("%s = (dst & 0xff) | (tmp << 8);\n", wreg[3]);
-}
-
-static
-void
-mulxu ()
-{
- printf ("srca = %s;\n", breg[2]);
- printf ("srcb = %s;\n", wreg[3]);
-
- printf ("dst = (srcb&0xff) * srca;\n");
- printf ("%s = dst;\n", wreg[3]);
-}
-
-static
-void
-inc ()
-{
- printf ("dst = %s;\n", breg[3]);
- printf ("v = (dst==0x7f);\n");
- printf ("dst++;\n");
- printf ("%s= dst;\n", breg[3]);
-}
-
-static
-void
-bit (p, a, s)
- struct h8_opcode *p;
- char *a;
- int s;
-{
- printf ("%s\n", a);
-}
-
-static
-void
-dec ()
-{
- printf ("dst = %s;\n", breg[3]);
- printf ("v = (dst==0x80);\n");
- printf ("dst--;\n");
- printf ("%s = dst;\n", breg[3]);
-}
-
-char saf[] = "goto setflags;";
-char sf[] = "goto shiftflags;";
-char af8[] = "goto aluflags8;";
-char af16[] = "goto aluflags16;";
-char lf[] = "goto logflags;";
-char icf[] = "goto incflags;";
-char mf8[] = "goto movflags8;";
-char mf16[] = "goto movflags16;";
-char nx[] = "goto next;";
-
-struct
-{
- char *ftype;
- int decode;
- char *name;
- void (*func) ();
- char *arg;
- int size;
-
-}
-
-table[] =
-{
- {
- nx, 1, "bld", bit, "dst = srcb; c = (srcb>>srca)&1;", 8
- }
- ,
- {
- nx, 1, "bild", bit, "dst = srcb; c = !((srcb>>srca)&1);", 8
- }
- ,
- {
- nx, 1, "band", bit, "dst = srcb; c = C &&((srcb>>srca)&1);", 8
- }
- ,
- {
- nx, 1, "biand", bit, "dst = srcb; c = C &&(!((srcb>>srca)&1));", 8
- }
- ,
- {
- nx, 1, "bior", bit, "dst = srcb; c = C ||(!((srcb>>srca)&1));", 8
- }
- ,
- {
- nx, 1, "bor", bit, "dst = srcb; c = C ||(((srcb>>srca)&1));", 8
- }
- ,
- {
- nx, 1, "bixor", bit, "dst = srcb; c = C ^(!((srcb>>srca)&1));", 8
- }
- ,
- {
- nx, 1, "bxor", bit, "dst = srcb; c = C ^(((srcb>>srca)&1));", 8
- }
- ,
- {
- nx, 1, "bnot", bit, "dst = srcb ^ (1<<srca);", 8
- }
- ,
- {
- nx, 1, "bclr", bit, "dst = srcb & ~(1<<srca);", 8
- }
- ,
- {
- nx, 1, "bset", bit, "dst = srcb | (1<<srca);", 8
- }
- ,
- {
- nx, 1, "bst", bit, "dst = (srcb & ~(1<<srca))| ((C)<<srca);", 8
- }
- ,
- {
- nx, 1, "bist", bit, "dst = (srcb & ~(1<<srca))| ((!C)<<srca);", 8
- }
- ,
- {
- nx, 1, "btst", bit, "dst = srcb; z = !((srcb>>srca)&1);", 8
- }
- ,
- {
- icf, 0, "dec", dec, 0, 0
- }
- ,
- {
- icf, 0, "inc", inc, 0, 0
- }
- ,
- {
- saf, 1, "orc", setf, "|", 0
- }
- ,
- {
- saf, 1, "xorc", setf, "^", 0
- }
- ,
- {
- saf, 1, "andc", setf, "&", 0
- }
- ,
- {
- nx, 1, "nop", nop, 0, 0
- }
- ,
- {
- nx, 1, "bra", bra, "1", 0
- }
- ,
- {
- nx, 1, "brn", bra, "0", 0
- }
- ,
- {
- nx, 1, "bhi", bra, "(C||Z)==0", 0
- }
- ,
- {
- nx, 1, "bls", bra, "(C||Z)==1", 0
- }
- ,
- {
- nx, 1, "bcs", bra, "C==1", 0
- }
- ,
- {
- nx, 1, "bcc", bra, "C==0", 0
- }
- ,
- {
- nx, 1, "bpl", bra, "N==0", 0
- }
- ,
- {
- nx, 1, "bmi", bra, "N==1", 0
- }
- ,
- {
- nx, 1, "bvs", bra, "V==1", 0
- }
- ,
- {
- nx, 1, "bvc", bra, "V==0", 0
- }
- ,
- {
- nx, 1, "bge", bra, "(N^V)==0", 0
- }
- ,
- {
- nx, 1, "bgt", bra, "(Z|(N^V))==0", 0
- }
- ,
- {
- nx, 1, "blt", bra, "(N^V)==1", 0
- }
- ,
- {
- nx, 1, "ble", bra, "(Z|(N^V))==1", 0
- }
- ,
- {
- nx, 1, "beq", bra, "Z==1", 0
- }
- ,
- {
- nx, 1, "bne", bra, "Z==0", 0
- }
- ,
- {
- nx, 1, "bsr", bsr, "", 0
- }
- ,
- {
- nx, 1, "jsr", jsr, 0, 0
- }
- ,
- {
- nx, 1, "jmp", jmp, 0, 0
- }
- ,
- {
- nx, 0, "rts", rts, 0, 0
- }
- ,
- {
- nx, 0, "rte", rte, 0, 0
- }
- ,
- {
- nx, 1, "andc", andc, 0, 0
- }
- ,
- {
- sf, 1, "shal", shal, 0, 0
- }
- ,
- {
- sf, 1, "shar", shar, 0, 0
- }
- ,
- {
- sf, 1, "shll", shll, 0, 0
- }
- ,
- {
- sf, 1, "shlr", shlr, 0, 0
- }
- ,
- {
- sf, 1, "rotxl", rotxl, 0, 0
- }
- ,
- {
- sf, 1, "rotxr", rotxr, 0, 0
- }
- ,
- {
- sf, 1, "rotl", rotl, 0, 0
- }
- ,
- {
- sf, 1, "rotr", rotr, 0, 0
- }
- ,
- {
- lf, 1, "xor", log, "^", 0
- }
- ,
- {
- lf, 1, "and", log, "&", 0
- }
- ,
- {
- lf, 1, "or", log, "|", 0
- }
- ,
- {
- lf, 1, "not", ulog, " ~", 0
- }
- ,
- {
- lf, 1, "neg", ulog, " - ", 0
- }
- ,
- {
- nx, 1, "adds", adds, "dst = srca + srcb", 0
- }
- ,
- {
- nx, 1, "subs", adds, "srca = -srca; dst = srcb + srca", 0
- }
- ,
- {
- af8, 1, "add.b", add, "dst = srca + srcb", 8
- }
- ,
- {
- af16, 1, "add.w", add, "dst = srca + srcb", 16
- }
- ,
- {
- af16, 1, "sub.w", add, "srca = -srca; dst = srcb + srca", 16
- }
- ,
- {
- af8, 1, "sub.b", add, "srca = -srca; dst = srcb + srca", 8
- }
- ,
- {
- af8, 1, "addx", addx, 0, 8
- }
- ,
- {
- af8, 1, "subx", subx, 0, 8
- }
- ,
- {
- af8, 0, "cmp.b", cmp, 0, 8
- }
- ,
- {
- af16, 0, "cmp.w", cmp, 0, 16
- }
- ,
- {
- nx, 1, "sleep", esleep, 0, 0
- }
- ,
- {
- nx, 0, "bpt", bpt, 0, 8
- }
- ,
- {
- nx, 0, "divxu", divxu, 0, 0
- }
- ,
- {
- nx, 0, "mulxu", mulxu, 0, 0
- }
- ,
- {
- mf8, 1, "mov.b", mov, 0, 8
- }
- ,
- {
- mf8, 1, "movtpe", mov, 0, 8
- }
- ,
- {
- mf8, 1, "movfpe", mov, 0, 8
- }
- ,
- {
- mf16, 1, "mov.w", mov, 0, 16
- }
- ,
- {
- 0
- }
-};
-
-static
-void
-edo (p)
- struct h8_opcode *p;
-{
- int i;
-
- printf ("%s %s %s\n", cs, p->name, ce);
-
- for (i = 0; table[i].name; i++)
- {
- if (strcmp (table[i].name, p->name) == 0)
- {
- printf ("{\n");
- if (table[i].decode)
- decode (p, 1, table[i].size);
- printf ("cycles += %d;\n", p->time);
- printf ("npc = pc + %d;\n", p->length / 2);
- table[i].func (p, table[i].arg, table[i].size);
- if (table[i].decode)
- decode (p, 0, table[i].size);
- if (table[i].ftype)
- printf (table[i].ftype);
- else
- printf ("goto next;\n");
- printf ("}\n");
- return;
- }
- }
- printf ("%s not found %s\n", cs, ce);
- printf ("saved_state.exception = SIGILL;\n");
- printf ("break;\n");
-}
-
-static
-int
-owrite (i)
- int i;
-{
- /* write if statements to select the right opcode */
- struct h8_opcode **p;
- int needand = 1;
-
- p = h8_opcodes_sorted[i];
- printf ("case 0x%03x:\n", i);
-
- if (p[1] == 0)
- {
- /* See if the next few also match */
- while (h8_opcodes_sorted[i + 1][0] == *p)
- {
- i++;
- printf ("case 0x%03x:\n", i);
- }
-
- /* Don't need any if's this is the only one */
- edo (*p);
- }
- else
- {
- while (*p)
- {
- /* start two nibbles in since we know we match in the first byte */
- int c;
- int nib = 2;
- int byte = 1;
- int mask1[5];
- int mask0[5];
- int nibshift = 4;
- int any = 0;
-
- for (c = 0; c < 5; c++)
- {
- mask1[c] = 0;
- mask0[c] = 0;
- }
- printf ("%s %x%x", cs, (*p)->data.nib[0], (*p)->data.nib[1]);
- while ((c = (*p)->data.nib[nib]) != E)
- {
- if (c & B30)
- {
- /* bit 3 must be zero */
- mask0[byte] |= 0x8 << nibshift;
- printf ("0");
- any = 1;
- }
- else if (c & B31)
- {
- /* bit 3 must be one */
- mask1[byte] |= 0x8 << nibshift;
- printf ("8");
- any = 1;
- }
- else if (c <= HexF)
- {
- mask0[byte] |= ((~c) & 0xf) << nibshift;
- mask1[byte] |= (c & 0xf) << nibshift;
- printf ("%x", c);
- any = 1;
- }
- else
- {
- printf ("x");
- }
- nib++;
- if (nibshift == 4)
- {
- nibshift = 0;
- }
- else
- {
- byte++;
- nibshift = 4;
- }
- }
- printf ("*/\n");
- if (any)
- {
- printf ("if (");
- needand = 0;
- for (c = 1; c < byte; c++)
- {
- if (mask0[c] | mask1[c])
- {
- int sh;
-
- if (needand)
- printf ("\n&&");
- if (c & 1)
- sh = 0;
- else
- sh = 8;
- if (c / 2 == 0 && sh == 0)
- printf ("((b1&0x%x)==0x%x)", mask0[c] | mask1[c],
- mask1[c]);
- else
- {
- printf ("((pc[%d]&(0x%02x<<%d))==(0x%x<<%d))",
- c / 2, mask0[c] | mask1[c], sh,
- mask1[c], sh);
- }
-
- needand = 1;
- }
- }
- printf (")\n");
- }
- edo (*p);
- p++;
-
- }
- }
- return i;
-}
-
-static
-void
-remove_dups ()
-{
- struct h8_opcode *s;
- struct h8_opcode *d;
-
- for (d = s = h8_opcodes; s->name; s++)
- {
- int doit = 1;
-
- if (strcmp (s->name, "push") == 0)
- doit = 0;
- if (strcmp (s->name, "bhs") == 0)
- doit = 0;
- if (strcmp (s->name, "blo") == 0)
- doit = 0;
- if (strcmp (s->name, "bt") == 0)
- doit = 0;
- if (strcmp (s->name, "bf") == 0)
- doit = 0;
- if (strcmp (s->name, "pop") == 0)
- doit = 0;
- if (doit)
- {
- *d++ = *s;
- }
- }
- *d++ = *s++;
-}
-
-int
-main ()
-{
- int i;
-
- remove_dups ();
- init ();
-
- printf ("%s do the operation %s\n", cs, ce);
- printf ("switch (b0) \n{\n");
- for (i = 0; i < PTWO; i++)
- {
- i = owrite (i);
- }
- printf ("}\n");
-
- return 0;
-}
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