Merge perlext/Compiler/... into mainline. Some files move to

ext/B/..., some to lib/B/..., O.pm and B.pm go in lib and some
move to the base perl directory (e.g. headers). Will need some
cleaning up before it builds properly, I would guess.

p4raw-id: //depot/perl@562

1 files changed, 168 insertions, 0 deletions

diff --git a/bytecode.h b/bytecode.h
new file mode 100644
index 0000000000..bfa4025f14
--- /dev/null
+++ b/bytecode.h
@@ -0,0 +1,168 @@
+typedef char *pvcontents;
+typedef char *strconst;
+typedef U32 PV;
+typedef char *op_tr_array;
+typedef int comment;
+typedef SV *svindex;
+typedef OP *opindex;
+typedef IV IV64;
+
+EXT int iv_overflows INIT(0);
+void *bset_obj_store _((void *, I32));
+void freadpv _((U32, void *));
+
+EXT SV *sv;
+#ifndef USE_THREADS
+EXT OP *op;
+#endif
+EXT XPV pv;
+
+EXT void **obj_list;
+EXT I32 obj_list_fill INIT(-1);
+
+#ifdef INDIRECT_BGET_MACROS
+#define FREAD(argp, len, nelem) bs.fread((char*)(argp),(len),(nelem),bs.data)
+#define FGETC() bs.fgetc(bs.data)
+#else
+#define FREAD(argp, len, nelem) fread((argp), (len), (nelem), fp)
+#define FGETC() getc(fp)
+#endif /* INDIRECT_BGET_MACROS */
+
+#define BGET_U32(arg)	FREAD(&arg, sizeof(U32), 1); arg = ntohl((U32)arg)
+#define BGET_I32(arg)	FREAD(&arg, sizeof(I32), 1); arg = (I32)ntohl((U32)arg)
+#define BGET_U16(arg)	FREAD(&arg, sizeof(U16), 1); arg = ntohs((U16)arg)
+#define BGET_U8(arg)	arg = FGETC()
+
+#if INDIRECT_BGET_MACROS
+#define BGET_PV(arg)	do {		\
+	BGET_U32(arg);			\
+	if (arg)			\
+	    bs.freadpv(arg, bs.data);	\
+	else {				\
+	    pv.xpv_pv = 0;		\
+	    pv.xpv_len = 0;		\
+	    pv.xpv_cur = 0;		\
+	}				\
+    } while (0)
+#else
+#define BGET_PV(arg)	do {			\
+	BGET_U32(arg);				\
+	if (arg) {				\
+	    New(666, pv.xpv_pv, arg, char);	\
+	    fread(pv.xpv_pv, 1, arg, fp);	\
+	    pv.xpv_len = arg;			\
+	    pv.xpv_cur = arg - 1;		\
+	} else {				\
+	    pv.xpv_pv = 0;			\
+	    pv.xpv_len = 0;			\
+	    pv.xpv_cur = 0;			\
+	}					\
+    } while (0)
+#endif /* INDIRECT_BGET_MACROS */
+
+#define BGET_comment(arg) \
+	do { arg = FGETC(); } while (arg != '\n' && arg != EOF)
+
+/*
+ * In the following, sizeof(IV)*4 is just a way of encoding 32 on 64-bit-IV
+ * machines such that 32-bit machine compilers don't whine about the shift
+ * count being too high even though the code is never reached there.
+ */
+#define BGET_IV64(arg) do {				\
+	U32 hi, lo;					\
+	BGET_U32(hi);					\
+	BGET_U32(lo);					\
+	if (sizeof(IV) == 8)				\
+	    arg = (IV) (hi << (sizeof(IV)*4) | lo);	\
+	else if (((I32)hi == -1 && (I32)lo < 0)		\
+		 || ((I32)hi == 0 && (I32)lo >= 0)) {	\
+	    arg = (I32)lo;				\
+	}						\
+	else {						\
+	    iv_overflows++;				\
+	    arg = 0;					\
+	}						\
+    } while (0)
+
+#define BGET_op_tr_array(arg) do {	\
+	unsigned short *ary;		\
+	int i;				\
+	New(666, ary, 256, unsigned short); \
+	FREAD(ary, 256, 2);		\
+	for (i = 0; i < 256; i++)	\
+	    ary[i] = ntohs(ary[i]);	\
+	arg = (char *) ary;		\
+    } while (0)
+
+#define BGET_pvcontents(arg)	arg = pv.xpv_pv
+#define BGET_strconst(arg)	do {	\
+	for (arg = tokenbuf; (*arg = FGETC()); arg++) /* nothing */;	\
+	arg = tokenbuf;			\
+    } while (0)
+
+#define BGET_double(arg)	do {	\
+	char *str;			\
+	BGET_strconst(str);		\
+	arg = atof(str);		\
+    } while (0)
+
+#define BGET_objindex(arg) do {	\
+	U32 ix;			\
+	BGET_U32(ix);		\
+	arg = obj_list[ix];	\
+    } while (0)
+
+#define BSET_ldspecsv(sv, arg) sv = specialsv_list[arg]
+				    
+#define BSET_sv_refcnt_add(svrefcnt, arg)	svrefcnt += arg
+#define BSET_gp_refcnt_add(gprefcnt, arg)	gprefcnt += arg
+#define BSET_gp_share(sv, arg)	do {	\
+	gp_free((GV*)sv);		\
+	GvGP(sv) = GvGP(arg);		\
+    } while (0)
+
+#define BSET_gv_fetchpv(sv, arg)	sv = (SV*)gv_fetchpv(arg, TRUE, SVt_PV)
+#define BSET_gv_stashpv(sv, arg)	sv = (SV*)gv_stashpv(arg, TRUE)
+#define BSET_sv_magic(sv, arg)		sv_magic(sv, Nullsv, arg, 0, 0)
+#define BSET_mg_pv(mg, arg)	mg->mg_ptr = arg; mg->mg_len = pv.xpv_cur
+#define BSET_sv_upgrade(sv, arg)	(void)SvUPGRADE(sv, arg)
+#define BSET_xpv(sv)	do {	\
+	SvPV_set(sv, pv.xpv_pv);	\
+	SvCUR_set(sv, pv.xpv_cur);	\
+	SvLEN_set(sv, pv.xpv_len);	\
+    } while (0)
+#define BSET_av_extend(sv, arg)	av_extend((AV*)sv, arg)
+
+#define BSET_av_push(sv, arg)	av_push((AV*)sv, arg)
+#define BSET_hv_store(sv, arg)	\
+	hv_store((HV*)sv, pv.xpv_pv, pv.xpv_cur, arg, 0)
+#define BSET_pv_free(pv)	Safefree(pv.xpv_pv)
+#define BSET_pregcomp(o, arg) \
+	((PMOP*)o)->op_pmregexp = arg ? \
+		pregcomp(arg, arg + pv.xpv_cur, ((PMOP*)o)) : 0
+#define BSET_newsv(sv, arg)	sv = NEWSV(666,0); SvUPGRADE(sv, arg)
+#define BSET_newop(o, arg)	o = (OP*)safemalloc(optype_size[arg])
+#define BSET_newopn(o, arg)	do {	\
+	OP *oldop = o;			\
+	BSET_newop(o, arg);		\
+	oldop->op_next = o;		\
+    } while (0)
+
+#define BSET_ret(foo) return
+
+/*
+ * Kludge special-case workaround for OP_MAPSTART
+ * which needs the ppaddr for OP_GREPSTART. Blech.
+ */
+#define BSET_op_type(o, arg)	do {	\
+	o->op_type = arg;		\
+	if (arg == OP_MAPSTART)		\
+	    arg = OP_GREPSTART;		\
+	o->op_ppaddr = ppaddr[arg];	\
+    } while (0)
+#define BSET_op_ppaddr(o, arg) croak("op_ppaddr not yet implemented")
+#define BSET_curpad(pad, arg) pad = AvARRAY(arg)
+
+#define BSET_OBJ_STORE(obj, ix)		\
+	(I32)ix > obj_list_fill ?	\
+	bset_obj_store(obj, (I32)ix) : (obj_list[ix] = obj)