[perl5.git] / scope.c

/*    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(curstack, (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!!! */
	}
    }
}

static SV *
save_scalar_at(sptr)
SV **sptr;
{
    register SV *sv;
    SV *osv = *sptr;

    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;
}

SV *
save_scalar(gv)
GV *gv;
{
    SSCHECK(3);
    SSPUSHPTR(gv);
    SSPUSHPTR(GvSV(gv));
    SSPUSHINT(SAVEt_SV);
    return save_scalar_at(&GvSV(gv));
}

SV*
save_svref(sptr)
SV **sptr;
{
    SSCHECK(3);
    SSPUSHPTR(sptr);
    SSPUSHPTR(*sptr);
    SSPUSHINT(SAVEt_SVREF);
    return save_scalar_at(sptr);
}

void
save_gp(gv, empty)
GV *gv;
I32 empty;
{
    SSCHECK(3);
    SSPUSHPTR(SvREFCNT_inc(gv));
    SSPUSHPTR(GvGP(gv));
    SSPUSHINT(SAVEt_GP);

    if (empty) {
	register GP *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;
    }
    else {
	GvGP(gv)->gp_refcnt++;
	GvINTRO_on(gv);
    }
}

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_I16(intp)
I16 *intp;
{
    SSCHECK(3);
    SSPUSHINT(*intp);
    SSPUSHPTR(intp);
    SSPUSHINT(SAVEt_I16);
}

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;
	    ptr = &GvSV(gv);
	    goto restore_sv;
        case SAVEt_SVREF:			/* scalar reference */
	    value = (SV*)SSPOPPTR;
	    ptr = SSPOPPTR;
	restore_sv:
	    sv = *(SV**)ptr;
	    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;
	    }
	    else if (SvTYPE(value) >= SVt_PVMG && SvMAGIC(value) &&
		     SvTYPE(value) != SVt_PVGV)
	    {
		SvFLAGS(value) |= (SvFLAGS(value) &
				   (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
		SvMAGICAL_off(value);
		SvMAGIC(value) = 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_I16:				/* I16 reference */
	    ptr = SSPOPPTR;
	    *(I16*)ptr = (I16)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((SV*)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;
	case SAVEt_STACK_POS:		/* Position on Perl stack */
	    {
		I32 delta = SSPOPINT;
		stack_sp = stack_base + delta;
	    }
	    break;
	default:
	    croak("panic: leave_scope inconsistency");
	}
    }
}

#ifdef DEBUGGING

void
cx_dump(cx)
CONTEXT* cx;
{
    PerlIO_printf(Perl_debug_log, "CX %d = %s\n", cx - cxstack, block_type[cx->cx_type]);
    if (cx->cx_type != CXt_SUBST) {
	PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
	PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%lx\n", (long)cx->blk_oldcop);
	PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
	PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
	PerlIO_printf(Perl_debug_log, "BLK_OLDRETSP = %ld\n", (long)cx->blk_oldretsp);
	PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%lx\n", (long)cx->blk_oldpm);
	PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
    }
    switch (cx->cx_type) {
    case CXt_NULL:
    case CXt_BLOCK:
	break;
    case CXt_SUB:
	PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%lx\n",
		(long)cx->blk_sub.cv);
	PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%lx\n",
		(long)cx->blk_sub.gv);
	PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%lx\n",
		(long)cx->blk_sub.dfoutgv);
	PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
		(long)cx->blk_sub.olddepth);
	PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
		(int)cx->blk_sub.hasargs);
	break;
    case CXt_EVAL:
	PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
		(long)cx->blk_eval.old_in_eval);
	PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
		op_name[cx->blk_eval.old_op_type],
		op_desc[cx->blk_eval.old_op_type]);
	PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
		cx->blk_eval.old_name);
	PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%lx\n",
		(long)cx->blk_eval.old_eval_root);
	break;

    case CXt_LOOP:
	PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n",
		cx->blk_loop.label);
	PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n",
		(long)cx->blk_loop.resetsp);
	PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%lx\n",
		(long)cx->blk_loop.redo_op);
	PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%lx\n",
		(long)cx->blk_loop.next_op);
	PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%lx\n",
		(long)cx->blk_loop.last_op);
	PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n",
		(long)cx->blk_loop.iterix);
	PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%lx\n",
		(long)cx->blk_loop.iterary);
	PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%lx\n",
		(long)cx->blk_loop.itervar);
	if (cx->blk_loop.itervar)
	    PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%lx\n",
		(long)cx->blk_loop.itersave);
	PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERLVAL = 0x%lx\n",
		(long)cx->blk_loop.iterlval);
	break;

    case CXt_SUBST:
	PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
		(long)cx->sb_iters);
	PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
		(long)cx->sb_maxiters);
	PerlIO_printf(Perl_debug_log, "SB_SAFEBASE = %ld\n",
		(long)cx->sb_safebase);
	PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
		(long)cx->sb_once);
	PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
		cx->sb_orig);
	PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%lx\n",
		(long)cx->sb_dstr);
	PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%lx\n",
		(long)cx->sb_targ);
	PerlIO_printf(Perl_debug_log, "SB_S = 0x%lx\n",
		(long)cx->sb_s);
	PerlIO_printf(Perl_debug_log, "SB_M = 0x%lx\n",
		(long)cx->sb_m);
	PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%lx\n",
		(long)cx->sb_strend);
	PerlIO_printf(Perl_debug_log, "SB_SUBBASE = 0x%lx\n",
		(long)cx->sb_subbase);
	break;
    }
}
#endif
Commit	Line	Data
a0d0e21e	1	/* scope.c
79072805	2	*
a0d0e21e	3	* Copyright (c) 1991-1994, Larry Wall
79072805 LW	4	*
	5	* You may distribute under the terms of either the GNU General Public
	6	* License or the Artistic License, as specified in the README file.
	7	*
a0d0e21e LW	8	*/
	9
	10	/*
	11	* "For the fashion of Minas Tirith was such that it was built on seven
	12	* levels..."
79072805 LW	13	*/
	14
	15	#include "EXTERN.h"
	16	#include "perl.h"
	17
a0d0e21e LW	18	SV**
	19	stack_grow(sp, p, n)
	20	SV** sp;
	21	SV** p;
	22	int n;
	23	{
	24	stack_sp = sp;
1f96a9ed	25	av_extend(curstack, (p - stack_base) + (n) + 128);
a0d0e21e LW	26	return stack_sp;
	27	}
	28
79072805 LW	29	I32
	30	cxinc()
	31	{
	32	cxstack_max = cxstack_max * 3 / 2;
a38d6535	33	Renew(cxstack, cxstack_max + 1, CONTEXT); /* XXX should fix CXINC macro */
79072805 LW	34	return cxstack_ix + 1;
	35	}
	36
	37	void
	38	push_return(retop)
	39	OP *retop;
	40	{
	41	if (retstack_ix == retstack_max) {
	42	retstack_max = retstack_max * 3 / 2;
	43	Renew(retstack, retstack_max, OP*);
	44	}
	45	retstack[retstack_ix++] = retop;
	46	}
	47
	48	OP *
	49	pop_return()
	50	{
	51	if (retstack_ix > 0)
	52	return retstack[--retstack_ix];
	53	else
	54	return Nullop;
	55	}
	56
	57	void
	58	push_scope()
	59	{
	60	if (scopestack_ix == scopestack_max) {
	61	scopestack_max = scopestack_max * 3 / 2;
	62	Renew(scopestack, scopestack_max, I32);
	63	}
	64	scopestack[scopestack_ix++] = savestack_ix;
	65
	66	}
	67
	68	void
	69	pop_scope()
	70	{
	71	I32 oldsave = scopestack[--scopestack_ix];
8990e307	72	LEAVE_SCOPE(oldsave);
79072805 LW	73	}
	74
	75	void
a0d0e21e LW	76	markstack_grow()
	77	{
	78	I32 oldmax = markstack_max - markstack;
	79	I32 newmax = oldmax * 3 / 2;
	80
	81	Renew(markstack, newmax, I32);
	82	markstack_ptr = markstack + oldmax;
	83	markstack_max = markstack + newmax;
	84	}
	85
	86	void
79072805 LW	87	savestack_grow()
	88	{
	89	savestack_max = savestack_max * 3 / 2;
	90	Renew(savestack, savestack_max, ANY);
	91	}
	92
	93	void
	94	free_tmps()
	95	{
	96	/* XXX should tmps_floor live in cxstack? */
	97	I32 myfloor = tmps_floor;
	98	while (tmps_ix > myfloor) { /* clean up after last statement */
	99	SV* sv = tmps_stack[tmps_ix];
	100	tmps_stack[tmps_ix--] = Nullsv;
463ee0b2 LW	101	if (sv) {
	102	#ifdef DEBUGGING
	103	SvTEMP_off(sv);
	104	#endif
8990e307	105	SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */
463ee0b2	106	}
79072805 LW	107	}
	108	}
	109
7a4c00b4	110	static SV *
	111	save_scalar_at(sptr)
	112	SV **sptr;
79072805 LW	113	{
79072805 LW	114	register SV *sv;
7a4c00b4	115	SV osv = sptr;
79072805	116
7a4c00b4	117	sv = *sptr = NEWSV(0,0);
a0d0e21e	118	if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
79072805	119	sv_upgrade(sv, SvTYPE(osv));
a0d0e21e	120	if (SvGMAGICAL(osv)) {
748a9306 LW	121	MAGIC* mg;
748a9306 LW	122	bool oldtainted = tainted;
a0d0e21e	123	mg_get(osv);
748a9306 LW	124	if (tainting && tainted && (mg = mg_find(osv, 't'))) {
	125	SAVESPTR(mg->mg_obj);
	126	mg->mg_obj = osv;
	127	}
a0d0e21e LW	128	SvFLAGS(osv) \|= (SvFLAGS(osv) &
a0d0e21e LW	129	(SVp_IOK\|SVp_NOK\|SVp_POK)) >> PRIVSHIFT;
748a9306	130	tainted = oldtainted;
a0d0e21e	131	}
79072805	132	SvMAGIC(sv) = SvMAGIC(osv);
a0d0e21e	133	SvFLAGS(sv) \|= SvMAGICAL(osv);
748a9306	134	localizing = 1;
79072805	135	SvSETMAGIC(sv);
748a9306	136	localizing = 0;
79072805 LW	137	}
	138	return sv;
	139	}
	140
7a4c00b4	141	SV *
	142	save_scalar(gv)
	143	GV *gv;
	144	{
	145	SSCHECK(3);
	146	SSPUSHPTR(gv);
	147	SSPUSHPTR(GvSV(gv));
	148	SSPUSHINT(SAVEt_SV);
	149	return save_scalar_at(&GvSV(gv));
	150	}
	151
	152	SV*
	153	save_svref(sptr)
	154	SV **sptr;
	155	{
	156	SSCHECK(3);
	157	SSPUSHPTR(sptr);
	158	SSPUSHPTR(*sptr);
	159	SSPUSHINT(SAVEt_SVREF);
	160	return save_scalar_at(sptr);
	161	}
	162
79072805	163	void
5f05dabc	164	save_gp(gv, empty)
79072805	165	GV *gv;
5f05dabc	166	I32 empty;
79072805	167	{
79072805	168	SSCHECK(3);
4633a7c4	169	SSPUSHPTR(SvREFCNT_inc(gv));
5f05dabc	170	SSPUSHPTR(GvGP(gv));
79072805 LW	171	SSPUSHINT(SAVEt_GP);
79072805 LW	172
5f05dabc	173	if (empty) {
	174	register GP *gp;
	175	Newz(602, gp, 1, GP);
	176	GvGP(gv) = gp;
	177	GvREFCNT(gv) = 1;
	178	GvSV(gv) = NEWSV(72,0);
	179	GvLINE(gv) = curcop->cop_line;
	180	GvEGV(gv) = gv;
	181	}
	182	else {
	183	GvGP(gv)->gp_refcnt++;
	184	GvINTRO_on(gv);
	185	}
79072805	186	}
79072805	187
79072805 LW	188	AV *
	189	save_ary(gv)
	190	GV *gv;
	191	{
	192	SSCHECK(3);
	193	SSPUSHPTR(gv);
	194	SSPUSHPTR(GvAVn(gv));
	195	SSPUSHINT(SAVEt_AV);
	196
	197	GvAV(gv) = Null(AV*);
	198	return GvAVn(gv);
	199	}
	200
	201	HV *
	202	save_hash(gv)
	203	GV *gv;
	204	{
	205	SSCHECK(3);
	206	SSPUSHPTR(gv);
	207	SSPUSHPTR(GvHVn(gv));
	208	SSPUSHINT(SAVEt_HV);
	209
	210	GvHV(gv) = Null(HV*);
	211	return GvHVn(gv);
	212	}
	213
	214	void
	215	save_item(item)
	216	register SV *item;
	217	{
	218	register SV *sv;
	219
	220	SSCHECK(3);
	221	SSPUSHPTR(item); /* remember the pointer */
	222	sv = NEWSV(0,0);
	223	sv_setsv(sv,item);
	224	SSPUSHPTR(sv); /* remember the value */
	225	SSPUSHINT(SAVEt_ITEM);
	226	}
	227
	228	void
	229	save_int(intp)
	230	int *intp;
	231	{
	232	SSCHECK(3);
	233	SSPUSHINT(*intp);
	234	SSPUSHPTR(intp);
	235	SSPUSHINT(SAVEt_INT);
	236	}
	237
	238	void
85e6fe83 LW	239	save_long(longp)
	240	long *longp;
	241	{
	242	SSCHECK(3);
	243	SSPUSHLONG(*longp);
	244	SSPUSHPTR(longp);
	245	SSPUSHINT(SAVEt_LONG);
	246	}
	247
	248	void
79072805 LW	249	save_I32(intp)
	250	I32 *intp;
	251	{
	252	SSCHECK(3);
	253	SSPUSHINT(*intp);
	254	SSPUSHPTR(intp);
	255	SSPUSHINT(SAVEt_I32);
	256	}
	257
a0d0e21e	258	void
55497cff	259	save_I16(intp)
	260	I16 *intp;
	261	{
	262	SSCHECK(3);
	263	SSPUSHINT(*intp);
	264	SSPUSHPTR(intp);
	265	SSPUSHINT(SAVEt_I16);
	266	}
	267
	268	void
a0d0e21e LW	269	save_iv(ivp)
	270	IV *ivp;
	271	{
	272	SSCHECK(3);
4aa0a1f7	273	SSPUSHIV(*ivp);
a0d0e21e LW	274	SSPUSHPTR(ivp);
	275	SSPUSHINT(SAVEt_IV);
	276	}
	277
85e6fe83 LW	278	/* Cannot use save_sptr() to store a char* since the SV** cast will
	279	* force word-alignment and we'll miss the pointer.
	280	*/
	281	void
	282	save_pptr(pptr)
	283	char **pptr;
	284	{
	285	SSCHECK(3);
	286	SSPUSHPTR(*pptr);
	287	SSPUSHPTR(pptr);
	288	SSPUSHINT(SAVEt_PPTR);
	289	}
	290
79072805 LW	291	void
	292	save_sptr(sptr)
	293	SV **sptr;
	294	{
	295	SSCHECK(3);
	296	SSPUSHPTR(*sptr);
	297	SSPUSHPTR(sptr);
	298	SSPUSHINT(SAVEt_SPTR);
	299	}
	300
	301	void
	302	save_nogv(gv)
	303	GV *gv;
	304	{
	305	SSCHECK(2);
	306	SSPUSHPTR(gv);
	307	SSPUSHINT(SAVEt_NSTAB);
	308	}
	309
	310	void
	311	save_hptr(hptr)
	312	HV **hptr;
	313	{
	314	SSCHECK(3);
85e6fe83	315	SSPUSHPTR(*hptr);
79072805 LW	316	SSPUSHPTR(hptr);
	317	SSPUSHINT(SAVEt_HPTR);
	318	}
	319
	320	void
	321	save_aptr(aptr)
	322	AV **aptr;
	323	{
	324	SSCHECK(3);
85e6fe83	325	SSPUSHPTR(*aptr);
79072805 LW	326	SSPUSHPTR(aptr);
	327	SSPUSHINT(SAVEt_APTR);
	328	}
	329
	330	void
8990e307 LW	331	save_freesv(sv)
	332	SV *sv;
	333	{
	334	SSCHECK(2);
	335	SSPUSHPTR(sv);
	336	SSPUSHINT(SAVEt_FREESV);
	337	}
	338
	339	void
	340	save_freeop(op)
	341	OP *op;
	342	{
	343	SSCHECK(2);
	344	SSPUSHPTR(op);
	345	SSPUSHINT(SAVEt_FREEOP);
	346	}
	347
	348	void
	349	save_freepv(pv)
	350	char *pv;
	351	{
	352	SSCHECK(2);
	353	SSPUSHPTR(pv);
	354	SSPUSHINT(SAVEt_FREEPV);
	355	}
	356
	357	void
	358	save_clearsv(svp)
	359	SV** svp;
	360	{
	361	SSCHECK(2);
4aa0a1f7	362	SSPUSHLONG((long)(svp-curpad));
8990e307 LW	363	SSPUSHINT(SAVEt_CLEARSV);
	364	}
	365
	366	void
	367	save_delete(hv,key,klen)
	368	HV *hv;
	369	char *key;
	370	I32 klen;
	371	{
	372	SSCHECK(4);
	373	SSPUSHINT(klen);
	374	SSPUSHPTR(key);
	375	SSPUSHPTR(hv);
	376	SSPUSHINT(SAVEt_DELETE);
	377	}
	378
	379	void
79072805 LW	380	save_list(sarg,maxsarg)
	381	register SV **sarg;
	382	I32 maxsarg;
	383	{
	384	register SV *sv;
	385	register I32 i;
	386
	387	SSCHECK(3 * maxsarg);
	388	for (i = 1; i <= maxsarg; i++) {
	389	SSPUSHPTR(sarg[i]); /* remember the pointer */
	390	sv = NEWSV(0,0);
	391	sv_setsv(sv,sarg[i]);
	392	SSPUSHPTR(sv); /* remember the value */
	393	SSPUSHINT(SAVEt_ITEM);
	394	}
	395	}
	396
	397	void
a0d0e21e LW	398	save_destructor(f,p)
	399	void (f) _((void));
	400	void* p;
	401	{
	402	SSCHECK(3);
	403	SSPUSHDPTR(f);
	404	SSPUSHPTR(p);
	405	SSPUSHINT(SAVEt_DESTRUCTOR);
	406	}
	407
	408	void
79072805 LW	409	leave_scope(base)
	410	I32 base;
	411	{
	412	register SV *sv;
	413	register SV *value;
	414	register GV *gv;
	415	register AV *av;
	416	register HV *hv;
	417	register void* ptr;
	418
	419	if (base < -1)
463ee0b2	420	croak("panic: corrupt saved stack index");
79072805 LW	421	while (savestack_ix > base) {
	422	switch (SSPOPINT) {
	423	case SAVEt_ITEM: /* normal string */
	424	value = (SV*)SSPOPPTR;
	425	sv = (SV*)SSPOPPTR;
	426	sv_replace(sv,value);
748a9306	427	localizing = 2;
79072805	428	SvSETMAGIC(sv);
748a9306	429	localizing = 0;
79072805 LW	430	break;
	431	case SAVEt_SV: /* scalar reference */
	432	value = (SV*)SSPOPPTR;
	433	gv = (GV*)SSPOPPTR;
7a4c00b4	434	ptr = &GvSV(gv);
7a4c00b4	435	goto restore_sv;
79072805	436	case SAVEt_SVREF: /* scalar reference */
7a4c00b4	437	value = (SV*)SSPOPPTR;
79072805	438	ptr = SSPOPPTR;
7a4c00b4	439	restore_sv:
79072805	440	sv = (SV*)ptr;
748a9306 LW	441	if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) &&
	442	SvTYPE(sv) != SVt_PVGV)
	443	{
a0d0e21e LW	444	(void)SvUPGRADE(value, SvTYPE(sv));
	445	SvMAGIC(value) = SvMAGIC(sv);
	446	SvFLAGS(value) \|= SvMAGICAL(sv);
	447	SvMAGICAL_off(sv);
79072805	448	SvMAGIC(sv) = 0;
a0d0e21e	449	}
7a4c00b4	450	else if (SvTYPE(value) >= SVt_PVMG && SvMAGIC(value) &&
	451	SvTYPE(value) != SVt_PVGV)
	452	{
	453	SvFLAGS(value) \|= (SvFLAGS(value) &
	454	(SVp_IOK\|SVp_NOK\|SVp_POK)) >> PRIVSHIFT;
	455	SvMAGICAL_off(value);
	456	SvMAGIC(value) = 0;
	457	}
8990e307	458	SvREFCNT_dec(sv);
a0d0e21e	459	(SV*)ptr = value;
748a9306	460	localizing = 2;
a0d0e21e	461	SvSETMAGIC(value);
748a9306	462	localizing = 0;
79072805 LW	463	break;
	464	case SAVEt_AV: /* array reference */
	465	av = (AV*)SSPOPPTR;
	466	gv = (GV*)SSPOPPTR;
8990e307	467	SvREFCNT_dec(GvAV(gv));
79072805 LW	468	GvAV(gv) = av;
	469	break;
	470	case SAVEt_HV: /* hash reference */
	471	hv = (HV*)SSPOPPTR;
	472	gv = (GV*)SSPOPPTR;
8990e307	473	SvREFCNT_dec(GvHV(gv));
79072805 LW	474	GvHV(gv) = hv;
	475	break;
	476	case SAVEt_INT: /* int reference */
	477	ptr = SSPOPPTR;
	478	(int)ptr = (int)SSPOPINT;
	479	break;
85e6fe83 LW	480	case SAVEt_LONG: /* long reference */
	481	ptr = SSPOPPTR;
	482	(long)ptr = (long)SSPOPLONG;
	483	break;
79072805 LW	484	case SAVEt_I32: /* I32 reference */
	485	ptr = SSPOPPTR;
	486	(I32)ptr = (I32)SSPOPINT;
	487	break;
55497cff	488	case SAVEt_I16: /* I16 reference */
	489	ptr = SSPOPPTR;
	490	(I16)ptr = (I16)SSPOPINT;
	491	break;
a0d0e21e LW	492	case SAVEt_IV: /* IV reference */
	493	ptr = SSPOPPTR;
	494	(IV)ptr = (IV)SSPOPIV;
	495	break;
79072805 LW	496	case SAVEt_SPTR: /* SV* reference */
	497	ptr = SSPOPPTR;
	498	(SV)ptr = (SV)SSPOPPTR;
	499	break;
85e6fe83 LW	500	case SAVEt_PPTR: /* char* reference */
	501	ptr = SSPOPPTR;
	502	(char)ptr = (char)SSPOPPTR;
	503	break;
79072805 LW	504	case SAVEt_HPTR: /* HV* reference */
	505	ptr = SSPOPPTR;
	506	(HV)ptr = (HV)SSPOPPTR;
	507	break;
	508	case SAVEt_APTR: /* AV* reference */
	509	ptr = SSPOPPTR;
	510	(AV)ptr = (AV)SSPOPPTR;
	511	break;
	512	case SAVEt_NSTAB:
	513	gv = (GV*)SSPOPPTR;
1f96a9ed	514	(void)sv_clear((SV*)gv);
79072805 LW	515	break;
	516	case SAVEt_GP: /* scalar reference */
	517	ptr = SSPOPPTR;
	518	gv = (GV*)SSPOPPTR;
	519	gp_free(gv);
	520	GvGP(gv) = (GP*)ptr;
4633a7c4	521	SvREFCNT_dec(gv);
79072805	522	break;
8990e307 LW	523	case SAVEt_FREESV:
	524	ptr = SSPOPPTR;
	525	SvREFCNT_dec((SV*)ptr);
	526	break;
	527	case SAVEt_FREEOP:
	528	ptr = SSPOPPTR;
	529	curpad = AvARRAY(comppad);
	530	op_free((OP*)ptr);
	531	break;
	532	case SAVEt_FREEPV:
	533	ptr = SSPOPPTR;
	534	Safefree((char*)ptr);
	535	break;
	536	case SAVEt_CLEARSV:
4aa0a1f7	537	ptr = (void*)&curpad[SSPOPLONG];
8990e307	538	sv = (SV*)ptr;
a0d0e21e	539	if (SvREFCNT(sv) <= 1) { /* Can clear pad variable in place. */
8990e307 LW	540	if (SvTHINKFIRST(sv)) {
	541	if (SvREADONLY(sv))
	542	croak("panic: leave_scope clearsv");
	543	if (SvROK(sv))
	544	sv_unref(sv);
	545	}
a0d0e21e LW	546	if (SvMAGICAL(sv))
a0d0e21e LW	547	mg_free(sv);
8990e307 LW	548
	549	switch (SvTYPE(sv)) {
	550	case SVt_NULL:
	551	break;
	552	case SVt_PVAV:
	553	av_clear((AV*)sv);
	554	break;
	555	case SVt_PVHV:
	556	hv_clear((HV*)sv);
	557	break;
	558	case SVt_PVCV:
	559	sub_generation++;
85e6fe83	560	cv_undef((CV*)sv);
8990e307 LW	561	break;
	562	default:
	563	if (SvPOK(sv) && SvLEN(sv))
a0d0e21e LW	564	(void)SvOOK_off(sv);
a0d0e21e LW	565	(void)SvOK_off(sv);
8990e307 LW	566	break;
	567	}
	568	}
	569	else { /* Someone has a claim on this, so abandon it. */
4aa0a1f7	570	U32 padflags = SvFLAGS(sv) & (SVs_PADBUSY\|SVs_PADMY\|SVs_PADTMP);
8990e307 LW	571	SvREFCNT_dec(sv); /* Cast current value to the winds. */
	572	switch (SvTYPE(sv)) { /* Console ourselves with a new value */
	573	case SVt_PVAV: (SV)ptr = (SV)newAV(); break;
	574	case SVt_PVHV: (SV)ptr = (SV)newHV(); break;
	575	default: (SV*)ptr = NEWSV(0,0); break;
	576	}
4aa0a1f7	577	SvFLAGS((SV)ptr) \|= padflags; / preserve pad nature */
8990e307 LW	578	}
	579	break;
	580	case SAVEt_DELETE:
	581	ptr = SSPOPPTR;
	582	hv = (HV*)ptr;
	583	ptr = SSPOPPTR;
748a9306	584	(void)hv_delete(hv, (char*)ptr, (U32)SSPOPINT, G_DISCARD);
adbc6bb1	585	Safefree(ptr);
8990e307	586	break;
a0d0e21e LW	587	case SAVEt_DESTRUCTOR:
	588	ptr = SSPOPPTR;
	589	(*SSPOPDPTR)(ptr);
	590	break;
	591	case SAVEt_REGCONTEXT:
8e07c86e AD	592	{
	593	I32 delta = SSPOPINT;
	594	savestack_ix -= delta; /* regexp must have croaked */
	595	}
a0d0e21e	596	break;
55497cff	597	case SAVEt_STACK_POS: /* Position on Perl stack */
	598	{
	599	I32 delta = SSPOPINT;
	600	stack_sp = stack_base + delta;
	601	}
	602	break;
79072805	603	default:
463ee0b2	604	croak("panic: leave_scope inconsistency");
79072805 LW	605	}
	606	}
	607	}
8990e307 LW	608
8990e307 LW	609	#ifdef DEBUGGING
1f96a9ed	610
8990e307 LW	611	void
	612	cx_dump(cx)
	613	CONTEXT* cx;
	614	{
760ac839	615	PerlIO_printf(Perl_debug_log, "CX %d = %s\n", cx - cxstack, block_type[cx->cx_type]);
8990e307	616	if (cx->cx_type != CXt_SUBST) {
760ac839 LW	617	PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
	618	PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%lx\n", (long)cx->blk_oldcop);
	619	PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
	620	PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
	621	PerlIO_printf(Perl_debug_log, "BLK_OLDRETSP = %ld\n", (long)cx->blk_oldretsp);
	622	PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%lx\n", (long)cx->blk_oldpm);
	623	PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
8990e307 LW	624	}
	625	switch (cx->cx_type) {
	626	case CXt_NULL:
	627	case CXt_BLOCK:
	628	break;
	629	case CXt_SUB:
760ac839	630	PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%lx\n",
8990e307	631	(long)cx->blk_sub.cv);
760ac839	632	PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%lx\n",
8990e307	633	(long)cx->blk_sub.gv);
760ac839	634	PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%lx\n",
8990e307	635	(long)cx->blk_sub.dfoutgv);
760ac839	636	PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
8990e307	637	(long)cx->blk_sub.olddepth);
760ac839	638	PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
8990e307 LW	639	(int)cx->blk_sub.hasargs);
	640	break;
	641	case CXt_EVAL:
760ac839	642	PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
8990e307	643	(long)cx->blk_eval.old_in_eval);
760ac839	644	PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
c07a80fd	645	op_name[cx->blk_eval.old_op_type],
c07a80fd	646	op_desc[cx->blk_eval.old_op_type]);
760ac839	647	PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
8990e307	648	cx->blk_eval.old_name);
760ac839	649	PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%lx\n",
8990e307 LW	650	(long)cx->blk_eval.old_eval_root);
	651	break;
	652
	653	case CXt_LOOP:
760ac839	654	PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n",
8990e307	655	cx->blk_loop.label);
760ac839	656	PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n",
8990e307	657	(long)cx->blk_loop.resetsp);
760ac839	658	PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%lx\n",
8990e307	659	(long)cx->blk_loop.redo_op);
760ac839	660	PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%lx\n",
8990e307	661	(long)cx->blk_loop.next_op);
760ac839	662	PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%lx\n",
8990e307	663	(long)cx->blk_loop.last_op);
760ac839	664	PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n",
8990e307	665	(long)cx->blk_loop.iterix);
760ac839	666	PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%lx\n",
8990e307	667	(long)cx->blk_loop.iterary);
760ac839	668	PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%lx\n",
8990e307 LW	669	(long)cx->blk_loop.itervar);
8990e307 LW	670	if (cx->blk_loop.itervar)
760ac839	671	PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%lx\n",
8990e307	672	(long)cx->blk_loop.itersave);
7a4c00b4	673	PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERLVAL = 0x%lx\n",
7a4c00b4	674	(long)cx->blk_loop.iterlval);
8990e307 LW	675	break;
	676
	677	case CXt_SUBST:
760ac839	678	PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
8990e307	679	(long)cx->sb_iters);
760ac839	680	PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
8990e307	681	(long)cx->sb_maxiters);
760ac839	682	PerlIO_printf(Perl_debug_log, "SB_SAFEBASE = %ld\n",
8990e307	683	(long)cx->sb_safebase);
760ac839	684	PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
8990e307	685	(long)cx->sb_once);
760ac839	686	PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
8990e307	687	cx->sb_orig);
760ac839	688	PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%lx\n",
8990e307	689	(long)cx->sb_dstr);
760ac839	690	PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%lx\n",
8990e307	691	(long)cx->sb_targ);
760ac839	692	PerlIO_printf(Perl_debug_log, "SB_S = 0x%lx\n",
8990e307	693	(long)cx->sb_s);
760ac839	694	PerlIO_printf(Perl_debug_log, "SB_M = 0x%lx\n",
8990e307	695	(long)cx->sb_m);
760ac839	696	PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%lx\n",
8990e307	697	(long)cx->sb_strend);
760ac839	698	PerlIO_printf(Perl_debug_log, "SB_SUBBASE = 0x%lx\n",
8990e307 LW	699	(long)cx->sb_subbase);
	700	break;
	701	}
	702	}
	703	#endif