Import of Perl 5.003 into the tree. Makefile.bsd-wrapper and

config.sh.OpenBSD are the only local changes.

1 files changed, 701 insertions, 0 deletions

diff --git a/gnu/usr.bin/perl/scope.c b/gnu/usr.bin/perl/scope.c
new file mode 100644
index 00000000000..3f4860990d7
--- /dev/null
+++ b/gnu/usr.bin/perl/scope.c
@@ -0,0 +1,701 @@
+/*    scope.c
+ *
+ *    Copyright (c) 1991-1994, Larry Wall
+ *
+ *    You may distribute under the terms of either the GNU General Public
+ *    License or the Artistic License, as specified in the README file.
+ *
+ */
+
+/*
+ * "For the fashion of Minas Tirith was such that it was built on seven
+ * levels..."
+ */
+
+#include "EXTERN.h"
+#include "perl.h"
+
+SV**
+stack_grow(sp, p, n)
+SV** sp;
+SV** p;
+int n;
+{
+    stack_sp = sp;
+    av_extend(stack, (p - stack_base) + (n) + 128);
+    return stack_sp;
+}
+
+I32
+cxinc()
+{
+    cxstack_max = cxstack_max * 3 / 2;
+    Renew(cxstack, cxstack_max + 1, CONTEXT);	/* XXX should fix CXINC macro */
+    return cxstack_ix + 1;
+}
+
+void
+push_return(retop)
+OP *retop;
+{
+    if (retstack_ix == retstack_max) {
+	retstack_max = retstack_max * 3 / 2;
+	Renew(retstack, retstack_max, OP*);
+    }
+    retstack[retstack_ix++] = retop;
+}
+
+OP *
+pop_return()
+{
+    if (retstack_ix > 0)
+	return retstack[--retstack_ix];
+    else
+	return Nullop;
+}
+
+void
+push_scope()
+{
+    if (scopestack_ix == scopestack_max) {
+	scopestack_max = scopestack_max * 3 / 2;
+	Renew(scopestack, scopestack_max, I32);
+    }
+    scopestack[scopestack_ix++] = savestack_ix;
+
+}
+
+void
+pop_scope()
+{
+    I32 oldsave = scopestack[--scopestack_ix];
+    LEAVE_SCOPE(oldsave);
+}
+
+void
+markstack_grow()
+{
+    I32 oldmax = markstack_max - markstack;
+    I32 newmax = oldmax * 3 / 2;
+
+    Renew(markstack, newmax, I32);
+    markstack_ptr = markstack + oldmax;
+    markstack_max = markstack + newmax;
+}
+
+void
+savestack_grow()
+{
+    savestack_max = savestack_max * 3 / 2;
+    Renew(savestack, savestack_max, ANY);
+}
+
+void
+free_tmps()
+{
+    /* XXX should tmps_floor live in cxstack? */
+    I32 myfloor = tmps_floor;
+    while (tmps_ix > myfloor) {      /* clean up after last statement */
+	SV* sv = tmps_stack[tmps_ix];
+	tmps_stack[tmps_ix--] = Nullsv;
+	if (sv) {
+#ifdef DEBUGGING
+	    SvTEMP_off(sv);
+#endif
+	    SvREFCNT_dec(sv);		/* note, can modify tmps_ix!!! */
+	}
+    }
+}
+
+SV *
+save_scalar(gv)
+GV *gv;
+{
+    register SV *sv;
+    SV *osv = GvSV(gv);
+
+    SSCHECK(3);
+    SSPUSHPTR(gv);
+    SSPUSHPTR(osv);
+    SSPUSHINT(SAVEt_SV);
+
+    sv = GvSV(gv) = NEWSV(0,0);
+    if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
+	sv_upgrade(sv, SvTYPE(osv));
+	if (SvGMAGICAL(osv)) {
+	    MAGIC* mg;
+	    bool oldtainted = tainted;
+	    mg_get(osv);
+	    if (tainting && tainted && (mg = mg_find(osv, 't'))) {
+		SAVESPTR(mg->mg_obj);
+		mg->mg_obj = osv;
+	    }
+	    SvFLAGS(osv) |= (SvFLAGS(osv) &
+		(SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
+	    tainted = oldtainted;
+	}
+	SvMAGIC(sv) = SvMAGIC(osv);
+	SvFLAGS(sv) |= SvMAGICAL(osv);
+	localizing = 1;
+	SvSETMAGIC(sv);
+	localizing = 0;
+    }
+    return sv;
+}
+
+#ifdef INLINED_ELSEWHERE
+void
+save_gp(gv)
+GV *gv;
+{
+    register GP *gp;
+    GP *ogp = GvGP(gv);
+
+    SSCHECK(3);
+    SSPUSHPTR(SvREFCNT_inc(gv));
+    SSPUSHPTR(ogp);
+    SSPUSHINT(SAVEt_GP);
+
+    Newz(602,gp, 1, GP);
+    GvGP(gv) = gp;
+    GvREFCNT(gv) = 1;
+    GvSV(gv) = NEWSV(72,0);
+    GvLINE(gv) = curcop->cop_line;
+    GvEGV(gv) = gv;
+}
+#endif
+
+SV*
+save_svref(sptr)
+SV **sptr;
+{
+    register SV *sv;
+    SV *osv = *sptr;
+
+    SSCHECK(3);
+    SSPUSHPTR(*sptr);
+    SSPUSHPTR(sptr);
+    SSPUSHINT(SAVEt_SVREF);
+
+    sv = *sptr = NEWSV(0,0);
+    if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
+	sv_upgrade(sv, SvTYPE(osv));
+	if (SvGMAGICAL(osv)) {
+	    MAGIC* mg;
+	    bool oldtainted = tainted;
+	    mg_get(osv);
+	    if (tainting && tainted && (mg = mg_find(osv, 't'))) {
+		SAVESPTR(mg->mg_obj);
+		mg->mg_obj = osv;
+	    }
+	    SvFLAGS(osv) |= (SvFLAGS(osv) &
+		(SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
+	    tainted = oldtainted;
+	}
+	SvMAGIC(sv) = SvMAGIC(osv);
+	SvFLAGS(sv) |= SvMAGICAL(osv);
+	localizing = 1;
+	SvSETMAGIC(sv);
+	localizing = 0;
+    }
+    return sv;
+}
+
+AV *
+save_ary(gv)
+GV *gv;
+{
+    SSCHECK(3);
+    SSPUSHPTR(gv);
+    SSPUSHPTR(GvAVn(gv));
+    SSPUSHINT(SAVEt_AV);
+
+    GvAV(gv) = Null(AV*);
+    return GvAVn(gv);
+}
+
+HV *
+save_hash(gv)
+GV *gv;
+{
+    SSCHECK(3);
+    SSPUSHPTR(gv);
+    SSPUSHPTR(GvHVn(gv));
+    SSPUSHINT(SAVEt_HV);
+
+    GvHV(gv) = Null(HV*);
+    return GvHVn(gv);
+}
+
+void
+save_item(item)
+register SV *item;
+{
+    register SV *sv;
+
+    SSCHECK(3);
+    SSPUSHPTR(item);		/* remember the pointer */
+    sv = NEWSV(0,0);
+    sv_setsv(sv,item);
+    SSPUSHPTR(sv);		/* remember the value */
+    SSPUSHINT(SAVEt_ITEM);
+}
+
+void
+save_int(intp)
+int *intp;
+{
+    SSCHECK(3);
+    SSPUSHINT(*intp);
+    SSPUSHPTR(intp);
+    SSPUSHINT(SAVEt_INT);
+}
+
+void
+save_long(longp)
+long *longp;
+{
+    SSCHECK(3);
+    SSPUSHLONG(*longp);
+    SSPUSHPTR(longp);
+    SSPUSHINT(SAVEt_LONG);
+}
+
+void
+save_I32(intp)
+I32 *intp;
+{
+    SSCHECK(3);
+    SSPUSHINT(*intp);
+    SSPUSHPTR(intp);
+    SSPUSHINT(SAVEt_I32);
+}
+
+void
+save_iv(ivp)
+IV *ivp;
+{
+    SSCHECK(3);
+    SSPUSHIV(*ivp);
+    SSPUSHPTR(ivp);
+    SSPUSHINT(SAVEt_IV);
+}
+
+/* Cannot use save_sptr() to store a char* since the SV** cast will
+ * force word-alignment and we'll miss the pointer.
+ */
+void
+save_pptr(pptr)
+char **pptr;
+{
+    SSCHECK(3);
+    SSPUSHPTR(*pptr);
+    SSPUSHPTR(pptr);
+    SSPUSHINT(SAVEt_PPTR);
+}
+
+void
+save_sptr(sptr)
+SV **sptr;
+{
+    SSCHECK(3);
+    SSPUSHPTR(*sptr);
+    SSPUSHPTR(sptr);
+    SSPUSHINT(SAVEt_SPTR);
+}
+
+void
+save_nogv(gv)
+GV *gv;
+{
+    SSCHECK(2);
+    SSPUSHPTR(gv);
+    SSPUSHINT(SAVEt_NSTAB);
+}
+
+void
+save_hptr(hptr)
+HV **hptr;
+{
+    SSCHECK(3);
+    SSPUSHPTR(*hptr);
+    SSPUSHPTR(hptr);
+    SSPUSHINT(SAVEt_HPTR);
+}
+
+void
+save_aptr(aptr)
+AV **aptr;
+{
+    SSCHECK(3);
+    SSPUSHPTR(*aptr);
+    SSPUSHPTR(aptr);
+    SSPUSHINT(SAVEt_APTR);
+}
+
+void
+save_freesv(sv)
+SV *sv;
+{
+    SSCHECK(2);
+    SSPUSHPTR(sv);
+    SSPUSHINT(SAVEt_FREESV);
+}
+
+void
+save_freeop(op)
+OP *op;
+{
+    SSCHECK(2);
+    SSPUSHPTR(op);
+    SSPUSHINT(SAVEt_FREEOP);
+}
+
+void
+save_freepv(pv)
+char *pv;
+{
+    SSCHECK(2);
+    SSPUSHPTR(pv);
+    SSPUSHINT(SAVEt_FREEPV);
+}
+
+void
+save_clearsv(svp)
+SV** svp;
+{
+    SSCHECK(2);
+    SSPUSHLONG((long)(svp-curpad));
+    SSPUSHINT(SAVEt_CLEARSV);
+}
+
+void
+save_delete(hv,key,klen)
+HV *hv;
+char *key;
+I32 klen;
+{
+    SSCHECK(4);
+    SSPUSHINT(klen);
+    SSPUSHPTR(key);
+    SSPUSHPTR(hv);
+    SSPUSHINT(SAVEt_DELETE);
+}
+
+void
+save_list(sarg,maxsarg)
+register SV **sarg;
+I32 maxsarg;
+{
+    register SV *sv;
+    register I32 i;
+
+    SSCHECK(3 * maxsarg);
+    for (i = 1; i <= maxsarg; i++) {
+	SSPUSHPTR(sarg[i]);		/* remember the pointer */
+	sv = NEWSV(0,0);
+	sv_setsv(sv,sarg[i]);
+	SSPUSHPTR(sv);			/* remember the value */
+	SSPUSHINT(SAVEt_ITEM);
+    }
+}
+
+void
+save_destructor(f,p)
+void (*f) _((void*));
+void* p;
+{
+    SSCHECK(3);
+    SSPUSHDPTR(f);
+    SSPUSHPTR(p);
+    SSPUSHINT(SAVEt_DESTRUCTOR);
+}
+
+void
+leave_scope(base)
+I32 base;
+{
+    register SV *sv;
+    register SV *value;
+    register GV *gv;
+    register AV *av;
+    register HV *hv;
+    register void* ptr;
+
+    if (base < -1)
+	croak("panic: corrupt saved stack index");
+    while (savestack_ix > base) {
+	switch (SSPOPINT) {
+	case SAVEt_ITEM:			/* normal string */
+	    value = (SV*)SSPOPPTR;
+	    sv = (SV*)SSPOPPTR;
+	    sv_replace(sv,value);
+	    localizing = 2;
+	    SvSETMAGIC(sv);
+	    localizing = 0;
+	    break;
+        case SAVEt_SV:				/* scalar reference */
+	    value = (SV*)SSPOPPTR;
+	    gv = (GV*)SSPOPPTR;
+	    sv = GvSV(gv);
+	    if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) &&
+		SvTYPE(sv) != SVt_PVGV)
+	    {
+		(void)SvUPGRADE(value, SvTYPE(sv));
+		SvMAGIC(value) = SvMAGIC(sv);
+		SvFLAGS(value) |= SvMAGICAL(sv);
+		SvMAGICAL_off(sv);
+		SvMAGIC(sv) = 0;
+	    }
+            SvREFCNT_dec(sv);
+            GvSV(gv) = value;
+	    localizing = 2;
+	    SvSETMAGIC(value);
+	    localizing = 0;
+            break;
+        case SAVEt_SVREF:			/* scalar reference */
+	    ptr = SSPOPPTR;
+	    sv = *(SV**)ptr;
+	    value = (SV*)SSPOPPTR;
+	    if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) &&
+		SvTYPE(sv) != SVt_PVGV)
+	    {
+		(void)SvUPGRADE(value, SvTYPE(sv));
+		SvMAGIC(value) = SvMAGIC(sv);
+		SvFLAGS(value) |= SvMAGICAL(sv);
+		SvMAGICAL_off(sv);
+		SvMAGIC(sv) = 0;
+	    }
+            SvREFCNT_dec(sv);
+	    *(SV**)ptr = value;
+	    localizing = 2;
+	    SvSETMAGIC(value);
+	    localizing = 0;
+            break;
+        case SAVEt_AV:				/* array reference */
+	    av = (AV*)SSPOPPTR;
+	    gv = (GV*)SSPOPPTR;
+            SvREFCNT_dec(GvAV(gv));
+            GvAV(gv) = av;
+            break;
+        case SAVEt_HV:				/* hash reference */
+	    hv = (HV*)SSPOPPTR;
+	    gv = (GV*)SSPOPPTR;
+            SvREFCNT_dec(GvHV(gv));
+            GvHV(gv) = hv;
+            break;
+	case SAVEt_INT:				/* int reference */
+	    ptr = SSPOPPTR;
+	    *(int*)ptr = (int)SSPOPINT;
+	    break;
+	case SAVEt_LONG:			/* long reference */
+	    ptr = SSPOPPTR;
+	    *(long*)ptr = (long)SSPOPLONG;
+	    break;
+	case SAVEt_I32:				/* I32 reference */
+	    ptr = SSPOPPTR;
+	    *(I32*)ptr = (I32)SSPOPINT;
+	    break;
+	case SAVEt_IV:				/* IV reference */
+	    ptr = SSPOPPTR;
+	    *(IV*)ptr = (IV)SSPOPIV;
+	    break;
+	case SAVEt_SPTR:			/* SV* reference */
+	    ptr = SSPOPPTR;
+	    *(SV**)ptr = (SV*)SSPOPPTR;
+	    break;
+	case SAVEt_PPTR:			/* char* reference */
+	    ptr = SSPOPPTR;
+	    *(char**)ptr = (char*)SSPOPPTR;
+	    break;
+	case SAVEt_HPTR:			/* HV* reference */
+	    ptr = SSPOPPTR;
+	    *(HV**)ptr = (HV*)SSPOPPTR;
+	    break;
+	case SAVEt_APTR:			/* AV* reference */
+	    ptr = SSPOPPTR;
+	    *(AV**)ptr = (AV*)SSPOPPTR;
+	    break;
+	case SAVEt_NSTAB:
+	    gv = (GV*)SSPOPPTR;
+	    (void)sv_clear(gv);
+	    break;
+        case SAVEt_GP:				/* scalar reference */
+	    ptr = SSPOPPTR;
+	    gv = (GV*)SSPOPPTR;
+            gp_free(gv);
+            GvGP(gv) = (GP*)ptr;
+	    SvREFCNT_dec(gv);
+            break;
+	case SAVEt_FREESV:
+	    ptr = SSPOPPTR;
+	    SvREFCNT_dec((SV*)ptr);
+	    break;
+	case SAVEt_FREEOP:
+	    ptr = SSPOPPTR;
+	    curpad = AvARRAY(comppad);
+	    op_free((OP*)ptr);
+	    break;
+	case SAVEt_FREEPV:
+	    ptr = SSPOPPTR;
+	    Safefree((char*)ptr);
+	    break;
+	case SAVEt_CLEARSV:
+	    ptr = (void*)&curpad[SSPOPLONG];
+	    sv = *(SV**)ptr;
+	    if (SvREFCNT(sv) <= 1) { /* Can clear pad variable in place. */
+		if (SvTHINKFIRST(sv)) {
+		    if (SvREADONLY(sv))
+			croak("panic: leave_scope clearsv");
+		    if (SvROK(sv))
+			sv_unref(sv);
+		}
+		if (SvMAGICAL(sv))
+		    mg_free(sv);
+
+		switch (SvTYPE(sv)) {
+		case SVt_NULL:
+		    break;
+		case SVt_PVAV:
+		    av_clear((AV*)sv);
+		    break;
+		case SVt_PVHV:
+		    hv_clear((HV*)sv);
+		    break;
+		case SVt_PVCV:
+		    sub_generation++;
+		    cv_undef((CV*)sv);
+		    break;
+		default:
+		    if (SvPOK(sv) && SvLEN(sv))
+			(void)SvOOK_off(sv);
+		    (void)SvOK_off(sv);
+		    break;
+		}
+	    }
+	    else {	/* Someone has a claim on this, so abandon it. */
+		U32 padflags = SvFLAGS(sv) & (SVs_PADBUSY|SVs_PADMY|SVs_PADTMP);
+		SvREFCNT_dec(sv);	/* Cast current value to the winds. */
+		switch (SvTYPE(sv)) {	/* Console ourselves with a new value */
+		case SVt_PVAV:	*(SV**)ptr = (SV*)newAV();	break;
+		case SVt_PVHV:	*(SV**)ptr = (SV*)newHV();	break;
+		default:	*(SV**)ptr = NEWSV(0,0);	break;
+		}
+		SvFLAGS(*(SV**)ptr) |= padflags; /* preserve pad nature */
+	    }
+	    break;
+	case SAVEt_DELETE:
+	    ptr = SSPOPPTR;
+	    hv = (HV*)ptr;
+	    ptr = SSPOPPTR;
+	    (void)hv_delete(hv, (char*)ptr, (U32)SSPOPINT, G_DISCARD);
+	    Safefree(ptr);
+	    break;
+	case SAVEt_DESTRUCTOR:
+	    ptr = SSPOPPTR;
+	    (*SSPOPDPTR)(ptr);
+	    break;
+	case SAVEt_REGCONTEXT:
+	    {
+		I32 delta = SSPOPINT;
+		savestack_ix -= delta;	/* regexp must have croaked */
+	    }
+	    break;
+	default:
+	    croak("panic: leave_scope inconsistency");
+	}
+    }
+}
+
+#ifdef DEBUGGING
+void
+cx_dump(cx)
+CONTEXT* cx;
+{
+    fprintf(stderr, "CX %d = %s\n", cx - cxstack, block_type[cx->cx_type]);
+    if (cx->cx_type != CXt_SUBST) {
+	fprintf(stderr, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
+	fprintf(stderr, "BLK_OLDCOP = 0x%lx\n", (long)cx->blk_oldcop);
+	fprintf(stderr, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
+	fprintf(stderr, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
+	fprintf(stderr, "BLK_OLDRETSP = %ld\n", (long)cx->blk_oldretsp);
+	fprintf(stderr, "BLK_OLDPM = 0x%lx\n", (long)cx->blk_oldpm);
+	fprintf(stderr, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
+    }
+    switch (cx->cx_type) {
+    case CXt_NULL:
+    case CXt_BLOCK:
+	break;
+    case CXt_SUB:
+	fprintf(stderr, "BLK_SUB.CV = 0x%lx\n",
+		(long)cx->blk_sub.cv);
+	fprintf(stderr, "BLK_SUB.GV = 0x%lx\n",
+		(long)cx->blk_sub.gv);
+	fprintf(stderr, "BLK_SUB.DFOUTGV = 0x%lx\n",
+		(long)cx->blk_sub.dfoutgv);
+	fprintf(stderr, "BLK_SUB.OLDDEPTH = %ld\n",
+		(long)cx->blk_sub.olddepth);
+	fprintf(stderr, "BLK_SUB.HASARGS = %d\n",
+		(int)cx->blk_sub.hasargs);
+	break;
+    case CXt_EVAL:
+	fprintf(stderr, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
+		(long)cx->blk_eval.old_in_eval);
+	fprintf(stderr, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
+		op_name[cx->blk_eval.old_op_type],
+		op_desc[cx->blk_eval.old_op_type]);
+	fprintf(stderr, "BLK_EVAL.OLD_NAME = %s\n",
+		cx->blk_eval.old_name);
+	fprintf(stderr, "BLK_EVAL.OLD_EVAL_ROOT = 0x%lx\n",
+		(long)cx->blk_eval.old_eval_root);
+	break;
+
+    case CXt_LOOP:
+	fprintf(stderr, "BLK_LOOP.LABEL = %s\n",
+		cx->blk_loop.label);
+	fprintf(stderr, "BLK_LOOP.RESETSP = %ld\n",
+		(long)cx->blk_loop.resetsp);
+	fprintf(stderr, "BLK_LOOP.REDO_OP = 0x%lx\n",
+		(long)cx->blk_loop.redo_op);
+	fprintf(stderr, "BLK_LOOP.NEXT_OP = 0x%lx\n",
+		(long)cx->blk_loop.next_op);
+	fprintf(stderr, "BLK_LOOP.LAST_OP = 0x%lx\n",
+		(long)cx->blk_loop.last_op);
+	fprintf(stderr, "BLK_LOOP.ITERIX = %ld\n",
+		(long)cx->blk_loop.iterix);
+	fprintf(stderr, "BLK_LOOP.ITERARY = 0x%lx\n",
+		(long)cx->blk_loop.iterary);
+	fprintf(stderr, "BLK_LOOP.ITERVAR = 0x%lx\n",
+		(long)cx->blk_loop.itervar);
+	if (cx->blk_loop.itervar)
+	    fprintf(stderr, "BLK_LOOP.ITERSAVE = 0x%lx\n",
+		(long)cx->blk_loop.itersave);
+	break;
+
+    case CXt_SUBST:
+	fprintf(stderr, "SB_ITERS = %ld\n",
+		(long)cx->sb_iters);
+	fprintf(stderr, "SB_MAXITERS = %ld\n",
+		(long)cx->sb_maxiters);
+	fprintf(stderr, "SB_SAFEBASE = %ld\n",
+		(long)cx->sb_safebase);
+	fprintf(stderr, "SB_ONCE = %ld\n",
+		(long)cx->sb_once);
+	fprintf(stderr, "SB_ORIG = %s\n",
+		cx->sb_orig);
+	fprintf(stderr, "SB_DSTR = 0x%lx\n",
+		(long)cx->sb_dstr);
+	fprintf(stderr, "SB_TARG = 0x%lx\n",
+		(long)cx->sb_targ);
+	fprintf(stderr, "SB_S = 0x%lx\n",
+		(long)cx->sb_s);
+	fprintf(stderr, "SB_M = 0x%lx\n",
+		(long)cx->sb_m);
+	fprintf(stderr, "SB_STREND = 0x%lx\n",
+		(long)cx->sb_strend);
+	fprintf(stderr, "SB_SUBBASE = 0x%lx\n",
+		(long)cx->sb_subbase);
+	break;
+    }
+}
+#endif