[p5sagit/p5-mst-13.2.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"

/*
 * This value determines how small an SV is "small enough" to keep
 * in a lexical variable in anticipation of the next invocation.
 */
#define PADVAL_SMALL_ENOUGH 240

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:
		    if (AvMAX(sv) < (PADVAL_SMALL_ENOUGH / sizeof(SV*)))
			av_clear((AV*)sv);
		    else
			av_undef((AV*)sv);
		    break;
		case SVt_PVHV:
		    if (HvMAX(sv) < (PADVAL_SMALL_ENOUGH / sizeof(SV*)))
			hv_clear((HV*)sv);
		    else
			hv_undef((HV*)sv);
		    break;
		case SVt_PVCV:
		    croak("panic: leave_scope pad code");
		case SVt_RV:
		case SVt_IV:
		case SVt_NV:
		    (void)SvOK_off(sv);
		    break;
		default:
		    (void)SvOK_off(sv);
		    (void)SvOOK_off(sv);
		    if (SvPVX(sv) && SvLEN(sv) > PADVAL_SMALL_ENOUGH) {
			Safefree(SvPVX(sv));
			SvPVX(sv) = Nullch;
			SvLEN(sv) = 0;
			SvCUR(sv) = 0;
		    }
		    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	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	8	*/
	9
	10	/*
	11	* "For the fashion of Minas Tirith was such that it was built on seven
	12	* levels..."
79072805	13	*/
	14
	15	#include "EXTERN.h"
	16	#include "perl.h"
	17
5377b701	18	/*
	19	* This value determines how small an SV is "small enough" to keep
	20	* in a lexical variable in anticipation of the next invocation.
	21	*/
	22	#define PADVAL_SMALL_ENOUGH 240
	23
a0d0e21e	24	SV**
	25	stack_grow(sp, p, n)
	26	SV** sp;
	27	SV** p;
	28	int n;
	29	{
	30	stack_sp = sp;
1f96a9ed	31	av_extend(curstack, (p - stack_base) + (n) + 128);
a0d0e21e	32	return stack_sp;
	33	}
	34
79072805	35	I32
	36	cxinc()
	37	{
	38	cxstack_max = cxstack_max * 3 / 2;
a38d6535	39	Renew(cxstack, cxstack_max + 1, CONTEXT); /* XXX should fix CXINC macro */
79072805	40	return cxstack_ix + 1;
	41	}
	42
	43	void
	44	push_return(retop)
	45	OP *retop;
	46	{
	47	if (retstack_ix == retstack_max) {
	48	retstack_max = retstack_max * 3 / 2;
	49	Renew(retstack, retstack_max, OP*);
	50	}
	51	retstack[retstack_ix++] = retop;
	52	}
	53
	54	OP *
	55	pop_return()
	56	{
	57	if (retstack_ix > 0)
	58	return retstack[--retstack_ix];
	59	else
	60	return Nullop;
	61	}
	62
	63	void
	64	push_scope()
	65	{
	66	if (scopestack_ix == scopestack_max) {
	67	scopestack_max = scopestack_max * 3 / 2;
	68	Renew(scopestack, scopestack_max, I32);
	69	}
	70	scopestack[scopestack_ix++] = savestack_ix;
	71
	72	}
	73
	74	void
	75	pop_scope()
	76	{
	77	I32 oldsave = scopestack[--scopestack_ix];
8990e307	78	LEAVE_SCOPE(oldsave);
79072805	79	}
	80
	81	void
a0d0e21e	82	markstack_grow()
	83	{
	84	I32 oldmax = markstack_max - markstack;
	85	I32 newmax = oldmax * 3 / 2;
	86
	87	Renew(markstack, newmax, I32);
	88	markstack_ptr = markstack + oldmax;
	89	markstack_max = markstack + newmax;
	90	}
	91
	92	void
79072805	93	savestack_grow()
	94	{
	95	savestack_max = savestack_max * 3 / 2;
	96	Renew(savestack, savestack_max, ANY);
	97	}
	98
	99	void
	100	free_tmps()
	101	{
	102	/* XXX should tmps_floor live in cxstack? */
	103	I32 myfloor = tmps_floor;
	104	while (tmps_ix > myfloor) { /* clean up after last statement */
	105	SV* sv = tmps_stack[tmps_ix];
	106	tmps_stack[tmps_ix--] = Nullsv;
463ee0b2	107	if (sv) {
	108	#ifdef DEBUGGING
	109	SvTEMP_off(sv);
	110	#endif
8990e307	111	SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */
463ee0b2	112	}
79072805	113	}
	114	}
	115
7a4c00b4	116	static SV *
	117	save_scalar_at(sptr)
	118	SV **sptr;
79072805	119	{
79072805	120	register SV *sv;
7a4c00b4	121	SV osv = sptr;
79072805	122
7a4c00b4	123	sv = *sptr = NEWSV(0,0);
a0d0e21e	124	if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
79072805	125	sv_upgrade(sv, SvTYPE(osv));
a0d0e21e	126	if (SvGMAGICAL(osv)) {
748a9306	127	MAGIC* mg;
748a9306	128	bool oldtainted = tainted;
a0d0e21e	129	mg_get(osv);
748a9306	130	if (tainting && tainted && (mg = mg_find(osv, 't'))) {
	131	SAVESPTR(mg->mg_obj);
	132	mg->mg_obj = osv;
	133	}
a0d0e21e	134	SvFLAGS(osv) \|= (SvFLAGS(osv) &
a0d0e21e	135	(SVp_IOK\|SVp_NOK\|SVp_POK)) >> PRIVSHIFT;
748a9306	136	tainted = oldtainted;
a0d0e21e	137	}
79072805	138	SvMAGIC(sv) = SvMAGIC(osv);
a0d0e21e	139	SvFLAGS(sv) \|= SvMAGICAL(osv);
748a9306	140	localizing = 1;
79072805	141	SvSETMAGIC(sv);
748a9306	142	localizing = 0;
79072805	143	}
	144	return sv;
	145	}
	146
7a4c00b4	147	SV *
	148	save_scalar(gv)
	149	GV *gv;
	150	{
	151	SSCHECK(3);
	152	SSPUSHPTR(gv);
	153	SSPUSHPTR(GvSV(gv));
	154	SSPUSHINT(SAVEt_SV);
	155	return save_scalar_at(&GvSV(gv));
	156	}
	157
	158	SV*
	159	save_svref(sptr)
	160	SV **sptr;
	161	{
	162	SSCHECK(3);
	163	SSPUSHPTR(sptr);
	164	SSPUSHPTR(*sptr);
	165	SSPUSHINT(SAVEt_SVREF);
	166	return save_scalar_at(sptr);
	167	}
	168
79072805	169	void
5f05dabc	170	save_gp(gv, empty)
79072805	171	GV *gv;
5f05dabc	172	I32 empty;
79072805	173	{
79072805	174	SSCHECK(3);
4633a7c4	175	SSPUSHPTR(SvREFCNT_inc(gv));
5f05dabc	176	SSPUSHPTR(GvGP(gv));
79072805	177	SSPUSHINT(SAVEt_GP);
79072805	178
5f05dabc	179	if (empty) {
	180	register GP *gp;
	181	Newz(602, gp, 1, GP);
	182	GvGP(gv) = gp;
	183	GvREFCNT(gv) = 1;
	184	GvSV(gv) = NEWSV(72,0);
	185	GvLINE(gv) = curcop->cop_line;
	186	GvEGV(gv) = gv;
	187	}
	188	else {
	189	GvGP(gv)->gp_refcnt++;
	190	GvINTRO_on(gv);
	191	}
79072805	192	}
79072805	193
79072805	194	AV *
	195	save_ary(gv)
	196	GV *gv;
	197	{
	198	SSCHECK(3);
	199	SSPUSHPTR(gv);
	200	SSPUSHPTR(GvAVn(gv));
	201	SSPUSHINT(SAVEt_AV);
	202
	203	GvAV(gv) = Null(AV*);
	204	return GvAVn(gv);
	205	}
	206
	207	HV *
	208	save_hash(gv)
	209	GV *gv;
	210	{
	211	SSCHECK(3);
	212	SSPUSHPTR(gv);
	213	SSPUSHPTR(GvHVn(gv));
	214	SSPUSHINT(SAVEt_HV);
	215
	216	GvHV(gv) = Null(HV*);
	217	return GvHVn(gv);
	218	}
	219
	220	void
	221	save_item(item)
	222	register SV *item;
	223	{
	224	register SV *sv;
	225
	226	SSCHECK(3);
	227	SSPUSHPTR(item); /* remember the pointer */
	228	sv = NEWSV(0,0);
	229	sv_setsv(sv,item);
	230	SSPUSHPTR(sv); /* remember the value */
	231	SSPUSHINT(SAVEt_ITEM);
	232	}
	233
	234	void
	235	save_int(intp)
	236	int *intp;
	237	{
	238	SSCHECK(3);
	239	SSPUSHINT(*intp);
	240	SSPUSHPTR(intp);
	241	SSPUSHINT(SAVEt_INT);
	242	}
	243
	244	void
85e6fe83	245	save_long(longp)
	246	long *longp;
	247	{
	248	SSCHECK(3);
	249	SSPUSHLONG(*longp);
	250	SSPUSHPTR(longp);
	251	SSPUSHINT(SAVEt_LONG);
	252	}
	253
	254	void
79072805	255	save_I32(intp)
	256	I32 *intp;
	257	{
	258	SSCHECK(3);
	259	SSPUSHINT(*intp);
	260	SSPUSHPTR(intp);
	261	SSPUSHINT(SAVEt_I32);
	262	}
	263
a0d0e21e	264	void
55497cff	265	save_I16(intp)
	266	I16 *intp;
	267	{
	268	SSCHECK(3);
	269	SSPUSHINT(*intp);
	270	SSPUSHPTR(intp);
	271	SSPUSHINT(SAVEt_I16);
	272	}
	273
	274	void
a0d0e21e	275	save_iv(ivp)
	276	IV *ivp;
	277	{
	278	SSCHECK(3);
4aa0a1f7	279	SSPUSHIV(*ivp);
a0d0e21e	280	SSPUSHPTR(ivp);
	281	SSPUSHINT(SAVEt_IV);
	282	}
	283
85e6fe83	284	/* Cannot use save_sptr() to store a char* since the SV** cast will
	285	* force word-alignment and we'll miss the pointer.
	286	*/
	287	void
	288	save_pptr(pptr)
	289	char **pptr;
	290	{
	291	SSCHECK(3);
	292	SSPUSHPTR(*pptr);
	293	SSPUSHPTR(pptr);
	294	SSPUSHINT(SAVEt_PPTR);
	295	}
	296
79072805	297	void
	298	save_sptr(sptr)
	299	SV **sptr;
	300	{
	301	SSCHECK(3);
	302	SSPUSHPTR(*sptr);
	303	SSPUSHPTR(sptr);
	304	SSPUSHINT(SAVEt_SPTR);
	305	}
	306
	307	void
	308	save_nogv(gv)
	309	GV *gv;
	310	{
	311	SSCHECK(2);
	312	SSPUSHPTR(gv);
	313	SSPUSHINT(SAVEt_NSTAB);
	314	}
	315
	316	void
	317	save_hptr(hptr)
	318	HV **hptr;
	319	{
	320	SSCHECK(3);
85e6fe83	321	SSPUSHPTR(*hptr);
79072805	322	SSPUSHPTR(hptr);
	323	SSPUSHINT(SAVEt_HPTR);
	324	}
	325
	326	void
	327	save_aptr(aptr)
	328	AV **aptr;
	329	{
	330	SSCHECK(3);
85e6fe83	331	SSPUSHPTR(*aptr);
79072805	332	SSPUSHPTR(aptr);
	333	SSPUSHINT(SAVEt_APTR);
	334	}
	335
	336	void
8990e307	337	save_freesv(sv)
	338	SV *sv;
	339	{
	340	SSCHECK(2);
	341	SSPUSHPTR(sv);
	342	SSPUSHINT(SAVEt_FREESV);
	343	}
	344
	345	void
	346	save_freeop(op)
	347	OP *op;
	348	{
	349	SSCHECK(2);
	350	SSPUSHPTR(op);
	351	SSPUSHINT(SAVEt_FREEOP);
	352	}
	353
	354	void
	355	save_freepv(pv)
	356	char *pv;
	357	{
	358	SSCHECK(2);
	359	SSPUSHPTR(pv);
	360	SSPUSHINT(SAVEt_FREEPV);
	361	}
	362
	363	void
	364	save_clearsv(svp)
	365	SV** svp;
	366	{
	367	SSCHECK(2);
4aa0a1f7	368	SSPUSHLONG((long)(svp-curpad));
8990e307	369	SSPUSHINT(SAVEt_CLEARSV);
	370	}
	371
	372	void
	373	save_delete(hv,key,klen)
	374	HV *hv;
	375	char *key;
	376	I32 klen;
	377	{
	378	SSCHECK(4);
	379	SSPUSHINT(klen);
	380	SSPUSHPTR(key);
	381	SSPUSHPTR(hv);
	382	SSPUSHINT(SAVEt_DELETE);
	383	}
	384
	385	void
79072805	386	save_list(sarg,maxsarg)
	387	register SV **sarg;
	388	I32 maxsarg;
	389	{
	390	register SV *sv;
	391	register I32 i;
	392
	393	SSCHECK(3 * maxsarg);
	394	for (i = 1; i <= maxsarg; i++) {
	395	SSPUSHPTR(sarg[i]); /* remember the pointer */
	396	sv = NEWSV(0,0);
	397	sv_setsv(sv,sarg[i]);
	398	SSPUSHPTR(sv); /* remember the value */
	399	SSPUSHINT(SAVEt_ITEM);
	400	}
	401	}
	402
	403	void
a0d0e21e	404	save_destructor(f,p)
	405	void (f) _((void));
	406	void* p;
	407	{
	408	SSCHECK(3);
	409	SSPUSHDPTR(f);
	410	SSPUSHPTR(p);
	411	SSPUSHINT(SAVEt_DESTRUCTOR);
	412	}
	413
	414	void
79072805	415	leave_scope(base)
	416	I32 base;
	417	{
	418	register SV *sv;
	419	register SV *value;
	420	register GV *gv;
	421	register AV *av;
	422	register HV *hv;
	423	register void* ptr;
	424
	425	if (base < -1)
463ee0b2	426	croak("panic: corrupt saved stack index");
79072805	427	while (savestack_ix > base) {
	428	switch (SSPOPINT) {
	429	case SAVEt_ITEM: /* normal string */
	430	value = (SV*)SSPOPPTR;
	431	sv = (SV*)SSPOPPTR;
	432	sv_replace(sv,value);
748a9306	433	localizing = 2;
79072805	434	SvSETMAGIC(sv);
748a9306	435	localizing = 0;
79072805	436	break;
	437	case SAVEt_SV: /* scalar reference */
	438	value = (SV*)SSPOPPTR;
	439	gv = (GV*)SSPOPPTR;
7a4c00b4	440	ptr = &GvSV(gv);
7a4c00b4	441	goto restore_sv;
79072805	442	case SAVEt_SVREF: /* scalar reference */
7a4c00b4	443	value = (SV*)SSPOPPTR;
79072805	444	ptr = SSPOPPTR;
7a4c00b4	445	restore_sv:
79072805	446	sv = (SV*)ptr;
748a9306	447	if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) &&
	448	SvTYPE(sv) != SVt_PVGV)
	449	{
a0d0e21e	450	(void)SvUPGRADE(value, SvTYPE(sv));
	451	SvMAGIC(value) = SvMAGIC(sv);
	452	SvFLAGS(value) \|= SvMAGICAL(sv);
	453	SvMAGICAL_off(sv);
79072805	454	SvMAGIC(sv) = 0;
a0d0e21e	455	}
7a4c00b4	456	else if (SvTYPE(value) >= SVt_PVMG && SvMAGIC(value) &&
	457	SvTYPE(value) != SVt_PVGV)
	458	{
	459	SvFLAGS(value) \|= (SvFLAGS(value) &
	460	(SVp_IOK\|SVp_NOK\|SVp_POK)) >> PRIVSHIFT;
	461	SvMAGICAL_off(value);
	462	SvMAGIC(value) = 0;
	463	}
8990e307	464	SvREFCNT_dec(sv);
a0d0e21e	465	(SV*)ptr = value;
748a9306	466	localizing = 2;
a0d0e21e	467	SvSETMAGIC(value);
748a9306	468	localizing = 0;
79072805	469	break;
	470	case SAVEt_AV: /* array reference */
	471	av = (AV*)SSPOPPTR;
	472	gv = (GV*)SSPOPPTR;
8990e307	473	SvREFCNT_dec(GvAV(gv));
79072805	474	GvAV(gv) = av;
	475	break;
	476	case SAVEt_HV: /* hash reference */
	477	hv = (HV*)SSPOPPTR;
	478	gv = (GV*)SSPOPPTR;
8990e307	479	SvREFCNT_dec(GvHV(gv));
79072805	480	GvHV(gv) = hv;
	481	break;
	482	case SAVEt_INT: /* int reference */
	483	ptr = SSPOPPTR;
	484	(int)ptr = (int)SSPOPINT;
	485	break;
85e6fe83	486	case SAVEt_LONG: /* long reference */
	487	ptr = SSPOPPTR;
	488	(long)ptr = (long)SSPOPLONG;
	489	break;
79072805	490	case SAVEt_I32: /* I32 reference */
	491	ptr = SSPOPPTR;
	492	(I32)ptr = (I32)SSPOPINT;
	493	break;
55497cff	494	case SAVEt_I16: /* I16 reference */
	495	ptr = SSPOPPTR;
	496	(I16)ptr = (I16)SSPOPINT;
	497	break;
a0d0e21e	498	case SAVEt_IV: /* IV reference */
	499	ptr = SSPOPPTR;
	500	(IV)ptr = (IV)SSPOPIV;
	501	break;
79072805	502	case SAVEt_SPTR: /* SV* reference */
	503	ptr = SSPOPPTR;
	504	(SV)ptr = (SV)SSPOPPTR;
	505	break;
85e6fe83	506	case SAVEt_PPTR: /* char* reference */
	507	ptr = SSPOPPTR;
	508	(char)ptr = (char)SSPOPPTR;
	509	break;
79072805	510	case SAVEt_HPTR: /* HV* reference */
	511	ptr = SSPOPPTR;
	512	(HV)ptr = (HV)SSPOPPTR;
	513	break;
	514	case SAVEt_APTR: /* AV* reference */
	515	ptr = SSPOPPTR;
	516	(AV)ptr = (AV)SSPOPPTR;
	517	break;
	518	case SAVEt_NSTAB:
	519	gv = (GV*)SSPOPPTR;
1f96a9ed	520	(void)sv_clear((SV*)gv);
79072805	521	break;
	522	case SAVEt_GP: /* scalar reference */
	523	ptr = SSPOPPTR;
	524	gv = (GV*)SSPOPPTR;
	525	gp_free(gv);
	526	GvGP(gv) = (GP*)ptr;
4633a7c4	527	SvREFCNT_dec(gv);
79072805	528	break;
8990e307	529	case SAVEt_FREESV:
	530	ptr = SSPOPPTR;
	531	SvREFCNT_dec((SV*)ptr);
	532	break;
	533	case SAVEt_FREEOP:
	534	ptr = SSPOPPTR;
	535	curpad = AvARRAY(comppad);
	536	op_free((OP*)ptr);
	537	break;
	538	case SAVEt_FREEPV:
	539	ptr = SSPOPPTR;
	540	Safefree((char*)ptr);
	541	break;
	542	case SAVEt_CLEARSV:
4aa0a1f7	543	ptr = (void*)&curpad[SSPOPLONG];
8990e307	544	sv = (SV*)ptr;
a0d0e21e	545	if (SvREFCNT(sv) <= 1) { /* Can clear pad variable in place. */
8990e307	546	if (SvTHINKFIRST(sv)) {
	547	if (SvREADONLY(sv))
	548	croak("panic: leave_scope clearsv");
	549	if (SvROK(sv))
	550	sv_unref(sv);
	551	}
a0d0e21e	552	if (SvMAGICAL(sv))
a0d0e21e	553	mg_free(sv);
8990e307	554
	555	switch (SvTYPE(sv)) {
	556	case SVt_NULL:
	557	break;
	558	case SVt_PVAV:
5377b701	559	if (AvMAX(sv) < (PADVAL_SMALL_ENOUGH / sizeof(SV*)))
	560	av_clear((AV*)sv);
	561	else
	562	av_undef((AV*)sv);
8990e307	563	break;
8990e307	564	case SVt_PVHV:
5377b701	565	if (HvMAX(sv) < (PADVAL_SMALL_ENOUGH / sizeof(SV*)))
	566	hv_clear((HV*)sv);
	567	else
	568	hv_undef((HV*)sv);
8990e307	569	break;
8990e307	570	case SVt_PVCV:
5377b701	571	croak("panic: leave_scope pad code");
	572	case SVt_RV:
	573	case SVt_IV:
	574	case SVt_NV:
	575	(void)SvOK_off(sv);
8990e307	576	break;
8990e307	577	default:
a0d0e21e	578	(void)SvOK_off(sv);
5377b701	579	(void)SvOOK_off(sv);
	580	if (SvPVX(sv) && SvLEN(sv) > PADVAL_SMALL_ENOUGH) {
	581	Safefree(SvPVX(sv));
	582	SvPVX(sv) = Nullch;
	583	SvLEN(sv) = 0;
	584	SvCUR(sv) = 0;
	585	}
8990e307	586	break;
	587	}
	588	}
	589	else { /* Someone has a claim on this, so abandon it. */
4aa0a1f7	590	U32 padflags = SvFLAGS(sv) & (SVs_PADBUSY\|SVs_PADMY\|SVs_PADTMP);
8990e307	591	SvREFCNT_dec(sv); /* Cast current value to the winds. */
	592	switch (SvTYPE(sv)) { /* Console ourselves with a new value */
	593	case SVt_PVAV: (SV)ptr = (SV)newAV(); break;
	594	case SVt_PVHV: (SV)ptr = (SV)newHV(); break;
	595	default: (SV*)ptr = NEWSV(0,0); break;
	596	}
4aa0a1f7	597	SvFLAGS((SV)ptr) \|= padflags; / preserve pad nature */
8990e307	598	}
	599	break;
	600	case SAVEt_DELETE:
	601	ptr = SSPOPPTR;
	602	hv = (HV*)ptr;
	603	ptr = SSPOPPTR;
748a9306	604	(void)hv_delete(hv, (char*)ptr, (U32)SSPOPINT, G_DISCARD);
adbc6bb1	605	Safefree(ptr);
8990e307	606	break;
a0d0e21e	607	case SAVEt_DESTRUCTOR:
	608	ptr = SSPOPPTR;
	609	(*SSPOPDPTR)(ptr);
	610	break;
	611	case SAVEt_REGCONTEXT:
8e07c86e	612	{
	613	I32 delta = SSPOPINT;
	614	savestack_ix -= delta; /* regexp must have croaked */
	615	}
a0d0e21e	616	break;
55497cff	617	case SAVEt_STACK_POS: /* Position on Perl stack */
	618	{
	619	I32 delta = SSPOPINT;
	620	stack_sp = stack_base + delta;
	621	}
	622	break;
79072805	623	default:
463ee0b2	624	croak("panic: leave_scope inconsistency");
79072805	625	}
	626	}
	627	}
8990e307	628
8990e307	629	#ifdef DEBUGGING
1f96a9ed	630
8990e307	631	void
	632	cx_dump(cx)
	633	CONTEXT* cx;
	634	{
760ac839	635	PerlIO_printf(Perl_debug_log, "CX %d = %s\n", cx - cxstack, block_type[cx->cx_type]);
8990e307	636	if (cx->cx_type != CXt_SUBST) {
760ac839	637	PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
	638	PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%lx\n", (long)cx->blk_oldcop);
	639	PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
	640	PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
	641	PerlIO_printf(Perl_debug_log, "BLK_OLDRETSP = %ld\n", (long)cx->blk_oldretsp);
	642	PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%lx\n", (long)cx->blk_oldpm);
	643	PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
8990e307	644	}
	645	switch (cx->cx_type) {
	646	case CXt_NULL:
	647	case CXt_BLOCK:
	648	break;
	649	case CXt_SUB:
760ac839	650	PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%lx\n",
8990e307	651	(long)cx->blk_sub.cv);
760ac839	652	PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%lx\n",
8990e307	653	(long)cx->blk_sub.gv);
760ac839	654	PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%lx\n",
8990e307	655	(long)cx->blk_sub.dfoutgv);
760ac839	656	PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
8990e307	657	(long)cx->blk_sub.olddepth);
760ac839	658	PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
8990e307	659	(int)cx->blk_sub.hasargs);
	660	break;
	661	case CXt_EVAL:
760ac839	662	PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
8990e307	663	(long)cx->blk_eval.old_in_eval);
760ac839	664	PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
c07a80fd	665	op_name[cx->blk_eval.old_op_type],
c07a80fd	666	op_desc[cx->blk_eval.old_op_type]);
760ac839	667	PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
8990e307	668	cx->blk_eval.old_name);
760ac839	669	PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%lx\n",
8990e307	670	(long)cx->blk_eval.old_eval_root);
	671	break;
	672
	673	case CXt_LOOP:
760ac839	674	PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n",
8990e307	675	cx->blk_loop.label);
760ac839	676	PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n",
8990e307	677	(long)cx->blk_loop.resetsp);
760ac839	678	PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%lx\n",
8990e307	679	(long)cx->blk_loop.redo_op);
760ac839	680	PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%lx\n",
8990e307	681	(long)cx->blk_loop.next_op);
760ac839	682	PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%lx\n",
8990e307	683	(long)cx->blk_loop.last_op);
760ac839	684	PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n",
8990e307	685	(long)cx->blk_loop.iterix);
760ac839	686	PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%lx\n",
8990e307	687	(long)cx->blk_loop.iterary);
760ac839	688	PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%lx\n",
8990e307	689	(long)cx->blk_loop.itervar);
8990e307	690	if (cx->blk_loop.itervar)
760ac839	691	PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%lx\n",
8990e307	692	(long)cx->blk_loop.itersave);
7a4c00b4	693	PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERLVAL = 0x%lx\n",
7a4c00b4	694	(long)cx->blk_loop.iterlval);
8990e307	695	break;
	696
	697	case CXt_SUBST:
760ac839	698	PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
8990e307	699	(long)cx->sb_iters);
760ac839	700	PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
8990e307	701	(long)cx->sb_maxiters);
760ac839	702	PerlIO_printf(Perl_debug_log, "SB_SAFEBASE = %ld\n",
8990e307	703	(long)cx->sb_safebase);
760ac839	704	PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
8990e307	705	(long)cx->sb_once);
760ac839	706	PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
8990e307	707	cx->sb_orig);
760ac839	708	PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%lx\n",
8990e307	709	(long)cx->sb_dstr);
760ac839	710	PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%lx\n",
8990e307	711	(long)cx->sb_targ);
760ac839	712	PerlIO_printf(Perl_debug_log, "SB_S = 0x%lx\n",
8990e307	713	(long)cx->sb_s);
760ac839	714	PerlIO_printf(Perl_debug_log, "SB_M = 0x%lx\n",
8990e307	715	(long)cx->sb_m);
760ac839	716	PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%lx\n",
8990e307	717	(long)cx->sb_strend);
760ac839	718	PerlIO_printf(Perl_debug_log, "SB_SUBBASE = 0x%lx\n",
8990e307	719	(long)cx->sb_subbase);
	720	break;
	721	}
	722	}
	723	#endif