[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!!! */
	}
    }
}

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;
}

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);
    }
}

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_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;
	    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_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);
	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
	110	SV *
	111	save_scalar(gv)
	112	GV *gv;
	113	{
	114	register SV *sv;
	115	SV *osv = GvSV(gv);
	116
	117	SSCHECK(3);
	118	SSPUSHPTR(gv);
	119	SSPUSHPTR(osv);
	120	SSPUSHINT(SAVEt_SV);
	121
	122	sv = GvSV(gv) = NEWSV(0,0);
a0d0e21e	123	if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
79072805	124	sv_upgrade(sv, SvTYPE(osv));
a0d0e21e	125	if (SvGMAGICAL(osv)) {
748a9306 LW	126	MAGIC* mg;
748a9306 LW	127	bool oldtainted = tainted;
a0d0e21e	128	mg_get(osv);
748a9306 LW	129	if (tainting && tainted && (mg = mg_find(osv, 't'))) {
	130	SAVESPTR(mg->mg_obj);
	131	mg->mg_obj = osv;
	132	}
a0d0e21e LW	133	SvFLAGS(osv) \|= (SvFLAGS(osv) &
a0d0e21e LW	134	(SVp_IOK\|SVp_NOK\|SVp_POK)) >> PRIVSHIFT;
748a9306	135	tainted = oldtainted;
a0d0e21e	136	}
79072805	137	SvMAGIC(sv) = SvMAGIC(osv);
a0d0e21e	138	SvFLAGS(sv) \|= SvMAGICAL(osv);
748a9306	139	localizing = 1;
79072805	140	SvSETMAGIC(sv);
748a9306	141	localizing = 0;
79072805 LW	142	}
	143	return sv;
	144	}
	145
79072805	146	void
5f05dabc	147	save_gp(gv, empty)
79072805	148	GV *gv;
5f05dabc	149	I32 empty;
79072805	150	{
79072805	151	SSCHECK(3);
4633a7c4	152	SSPUSHPTR(SvREFCNT_inc(gv));
5f05dabc	153	SSPUSHPTR(GvGP(gv));
79072805 LW	154	SSPUSHINT(SAVEt_GP);
79072805 LW	155
5f05dabc	156	if (empty) {
	157	register GP *gp;
	158	Newz(602, gp, 1, GP);
	159	GvGP(gv) = gp;
	160	GvREFCNT(gv) = 1;
	161	GvSV(gv) = NEWSV(72,0);
	162	GvLINE(gv) = curcop->cop_line;
	163	GvEGV(gv) = gv;
	164	}
	165	else {
	166	GvGP(gv)->gp_refcnt++;
	167	GvINTRO_on(gv);
	168	}
79072805	169	}
79072805 LW	170
	171	SV*
	172	save_svref(sptr)
	173	SV **sptr;
	174	{
	175	register SV *sv;
	176	SV osv = sptr;
	177
	178	SSCHECK(3);
	179	SSPUSHPTR(*sptr);
	180	SSPUSHPTR(sptr);
	181	SSPUSHINT(SAVEt_SVREF);
	182
	183	sv = *sptr = NEWSV(0,0);
a0d0e21e	184	if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) {
79072805	185	sv_upgrade(sv, SvTYPE(osv));
a0d0e21e	186	if (SvGMAGICAL(osv)) {
748a9306 LW	187	MAGIC* mg;
748a9306 LW	188	bool oldtainted = tainted;
a0d0e21e	189	mg_get(osv);
748a9306 LW	190	if (tainting && tainted && (mg = mg_find(osv, 't'))) {
	191	SAVESPTR(mg->mg_obj);
	192	mg->mg_obj = osv;
	193	}
a0d0e21e LW	194	SvFLAGS(osv) \|= (SvFLAGS(osv) &
a0d0e21e LW	195	(SVp_IOK\|SVp_NOK\|SVp_POK)) >> PRIVSHIFT;
748a9306	196	tainted = oldtainted;
a0d0e21e	197	}
79072805	198	SvMAGIC(sv) = SvMAGIC(osv);
a0d0e21e	199	SvFLAGS(sv) \|= SvMAGICAL(osv);
748a9306	200	localizing = 1;
79072805	201	SvSETMAGIC(sv);
748a9306	202	localizing = 0;
79072805 LW	203	}
	204	return sv;
	205	}
	206
	207	AV *
	208	save_ary(gv)
	209	GV *gv;
	210	{
	211	SSCHECK(3);
	212	SSPUSHPTR(gv);
	213	SSPUSHPTR(GvAVn(gv));
	214	SSPUSHINT(SAVEt_AV);
	215
	216	GvAV(gv) = Null(AV*);
	217	return GvAVn(gv);
	218	}
	219
	220	HV *
	221	save_hash(gv)
	222	GV *gv;
	223	{
	224	SSCHECK(3);
	225	SSPUSHPTR(gv);
	226	SSPUSHPTR(GvHVn(gv));
	227	SSPUSHINT(SAVEt_HV);
	228
	229	GvHV(gv) = Null(HV*);
	230	return GvHVn(gv);
	231	}
	232
	233	void
	234	save_item(item)
	235	register SV *item;
	236	{
	237	register SV *sv;
	238
	239	SSCHECK(3);
	240	SSPUSHPTR(item); /* remember the pointer */
	241	sv = NEWSV(0,0);
	242	sv_setsv(sv,item);
	243	SSPUSHPTR(sv); /* remember the value */
	244	SSPUSHINT(SAVEt_ITEM);
	245	}
	246
	247	void
	248	save_int(intp)
	249	int *intp;
	250	{
	251	SSCHECK(3);
	252	SSPUSHINT(*intp);
	253	SSPUSHPTR(intp);
	254	SSPUSHINT(SAVEt_INT);
	255	}
	256
	257	void
85e6fe83 LW	258	save_long(longp)
	259	long *longp;
	260	{
	261	SSCHECK(3);
	262	SSPUSHLONG(*longp);
	263	SSPUSHPTR(longp);
	264	SSPUSHINT(SAVEt_LONG);
	265	}
	266
	267	void
79072805 LW	268	save_I32(intp)
	269	I32 *intp;
	270	{
	271	SSCHECK(3);
	272	SSPUSHINT(*intp);
	273	SSPUSHPTR(intp);
	274	SSPUSHINT(SAVEt_I32);
	275	}
	276
a0d0e21e	277	void
55497cff	278	save_I16(intp)
	279	I16 *intp;
	280	{
	281	SSCHECK(3);
	282	SSPUSHINT(*intp);
	283	SSPUSHPTR(intp);
	284	SSPUSHINT(SAVEt_I16);
	285	}
	286
	287	void
a0d0e21e LW	288	save_iv(ivp)
	289	IV *ivp;
	290	{
	291	SSCHECK(3);
4aa0a1f7	292	SSPUSHIV(*ivp);
a0d0e21e LW	293	SSPUSHPTR(ivp);
	294	SSPUSHINT(SAVEt_IV);
	295	}
	296
85e6fe83 LW	297	/* Cannot use save_sptr() to store a char* since the SV** cast will
	298	* force word-alignment and we'll miss the pointer.
	299	*/
	300	void
	301	save_pptr(pptr)
	302	char **pptr;
	303	{
	304	SSCHECK(3);
	305	SSPUSHPTR(*pptr);
	306	SSPUSHPTR(pptr);
	307	SSPUSHINT(SAVEt_PPTR);
	308	}
	309
79072805 LW	310	void
	311	save_sptr(sptr)
	312	SV **sptr;
	313	{
	314	SSCHECK(3);
	315	SSPUSHPTR(*sptr);
	316	SSPUSHPTR(sptr);
	317	SSPUSHINT(SAVEt_SPTR);
	318	}
	319
	320	void
	321	save_nogv(gv)
	322	GV *gv;
	323	{
	324	SSCHECK(2);
	325	SSPUSHPTR(gv);
	326	SSPUSHINT(SAVEt_NSTAB);
	327	}
	328
	329	void
	330	save_hptr(hptr)
	331	HV **hptr;
	332	{
	333	SSCHECK(3);
85e6fe83	334	SSPUSHPTR(*hptr);
79072805 LW	335	SSPUSHPTR(hptr);
	336	SSPUSHINT(SAVEt_HPTR);
	337	}
	338
	339	void
	340	save_aptr(aptr)
	341	AV **aptr;
	342	{
	343	SSCHECK(3);
85e6fe83	344	SSPUSHPTR(*aptr);
79072805 LW	345	SSPUSHPTR(aptr);
	346	SSPUSHINT(SAVEt_APTR);
	347	}
	348
	349	void
8990e307 LW	350	save_freesv(sv)
	351	SV *sv;
	352	{
	353	SSCHECK(2);
	354	SSPUSHPTR(sv);
	355	SSPUSHINT(SAVEt_FREESV);
	356	}
	357
	358	void
	359	save_freeop(op)
	360	OP *op;
	361	{
	362	SSCHECK(2);
	363	SSPUSHPTR(op);
	364	SSPUSHINT(SAVEt_FREEOP);
	365	}
	366
	367	void
	368	save_freepv(pv)
	369	char *pv;
	370	{
	371	SSCHECK(2);
	372	SSPUSHPTR(pv);
	373	SSPUSHINT(SAVEt_FREEPV);
	374	}
	375
	376	void
	377	save_clearsv(svp)
	378	SV** svp;
	379	{
	380	SSCHECK(2);
4aa0a1f7	381	SSPUSHLONG((long)(svp-curpad));
8990e307 LW	382	SSPUSHINT(SAVEt_CLEARSV);
	383	}
	384
	385	void
	386	save_delete(hv,key,klen)
	387	HV *hv;
	388	char *key;
	389	I32 klen;
	390	{
	391	SSCHECK(4);
	392	SSPUSHINT(klen);
	393	SSPUSHPTR(key);
	394	SSPUSHPTR(hv);
	395	SSPUSHINT(SAVEt_DELETE);
	396	}
	397
	398	void
79072805 LW	399	save_list(sarg,maxsarg)
	400	register SV **sarg;
	401	I32 maxsarg;
	402	{
	403	register SV *sv;
	404	register I32 i;
	405
	406	SSCHECK(3 * maxsarg);
	407	for (i = 1; i <= maxsarg; i++) {
	408	SSPUSHPTR(sarg[i]); /* remember the pointer */
	409	sv = NEWSV(0,0);
	410	sv_setsv(sv,sarg[i]);
	411	SSPUSHPTR(sv); /* remember the value */
	412	SSPUSHINT(SAVEt_ITEM);
	413	}
	414	}
	415
	416	void
a0d0e21e LW	417	save_destructor(f,p)
	418	void (f) _((void));
	419	void* p;
	420	{
	421	SSCHECK(3);
	422	SSPUSHDPTR(f);
	423	SSPUSHPTR(p);
	424	SSPUSHINT(SAVEt_DESTRUCTOR);
	425	}
	426
	427	void
79072805 LW	428	leave_scope(base)
	429	I32 base;
	430	{
	431	register SV *sv;
	432	register SV *value;
	433	register GV *gv;
	434	register AV *av;
	435	register HV *hv;
	436	register void* ptr;
	437
	438	if (base < -1)
463ee0b2	439	croak("panic: corrupt saved stack index");
79072805 LW	440	while (savestack_ix > base) {
	441	switch (SSPOPINT) {
	442	case SAVEt_ITEM: /* normal string */
	443	value = (SV*)SSPOPPTR;
	444	sv = (SV*)SSPOPPTR;
	445	sv_replace(sv,value);
748a9306	446	localizing = 2;
79072805	447	SvSETMAGIC(sv);
748a9306	448	localizing = 0;
79072805 LW	449	break;
	450	case SAVEt_SV: /* scalar reference */
	451	value = (SV*)SSPOPPTR;
	452	gv = (GV*)SSPOPPTR;
	453	sv = GvSV(gv);
748a9306 LW	454	if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) &&
	455	SvTYPE(sv) != SVt_PVGV)
	456	{
a0d0e21e	457	(void)SvUPGRADE(value, SvTYPE(sv));
85e6fe83	458	SvMAGIC(value) = SvMAGIC(sv);
a0d0e21e LW	459	SvFLAGS(value) \|= SvMAGICAL(sv);
a0d0e21e LW	460	SvMAGICAL_off(sv);
79072805	461	SvMAGIC(sv) = 0;
85e6fe83	462	}
8990e307	463	SvREFCNT_dec(sv);
a0d0e21e	464	GvSV(gv) = value;
748a9306	465	localizing = 2;
a0d0e21e	466	SvSETMAGIC(value);
748a9306	467	localizing = 0;
79072805 LW	468	break;
	469	case SAVEt_SVREF: /* scalar reference */
	470	ptr = SSPOPPTR;
	471	sv = (SV*)ptr;
a0d0e21e	472	value = (SV*)SSPOPPTR;
748a9306 LW	473	if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) &&
	474	SvTYPE(sv) != SVt_PVGV)
	475	{
a0d0e21e LW	476	(void)SvUPGRADE(value, SvTYPE(sv));
	477	SvMAGIC(value) = SvMAGIC(sv);
	478	SvFLAGS(value) \|= SvMAGICAL(sv);
	479	SvMAGICAL_off(sv);
79072805	480	SvMAGIC(sv) = 0;
a0d0e21e	481	}
8990e307	482	SvREFCNT_dec(sv);
a0d0e21e	483	(SV*)ptr = value;
748a9306	484	localizing = 2;
a0d0e21e	485	SvSETMAGIC(value);
748a9306	486	localizing = 0;
79072805 LW	487	break;
	488	case SAVEt_AV: /* array reference */
	489	av = (AV*)SSPOPPTR;
	490	gv = (GV*)SSPOPPTR;
8990e307	491	SvREFCNT_dec(GvAV(gv));
79072805 LW	492	GvAV(gv) = av;
	493	break;
	494	case SAVEt_HV: /* hash reference */
	495	hv = (HV*)SSPOPPTR;
	496	gv = (GV*)SSPOPPTR;
8990e307	497	SvREFCNT_dec(GvHV(gv));
79072805 LW	498	GvHV(gv) = hv;
	499	break;
	500	case SAVEt_INT: /* int reference */
	501	ptr = SSPOPPTR;
	502	(int)ptr = (int)SSPOPINT;
	503	break;
85e6fe83 LW	504	case SAVEt_LONG: /* long reference */
	505	ptr = SSPOPPTR;
	506	(long)ptr = (long)SSPOPLONG;
	507	break;
79072805 LW	508	case SAVEt_I32: /* I32 reference */
	509	ptr = SSPOPPTR;
	510	(I32)ptr = (I32)SSPOPINT;
	511	break;
55497cff	512	case SAVEt_I16: /* I16 reference */
	513	ptr = SSPOPPTR;
	514	(I16)ptr = (I16)SSPOPINT;
	515	break;
a0d0e21e LW	516	case SAVEt_IV: /* IV reference */
	517	ptr = SSPOPPTR;
	518	(IV)ptr = (IV)SSPOPIV;
	519	break;
79072805 LW	520	case SAVEt_SPTR: /* SV* reference */
	521	ptr = SSPOPPTR;
	522	(SV)ptr = (SV)SSPOPPTR;
	523	break;
85e6fe83 LW	524	case SAVEt_PPTR: /* char* reference */
	525	ptr = SSPOPPTR;
	526	(char)ptr = (char)SSPOPPTR;
	527	break;
79072805 LW	528	case SAVEt_HPTR: /* HV* reference */
	529	ptr = SSPOPPTR;
	530	(HV)ptr = (HV)SSPOPPTR;
	531	break;
	532	case SAVEt_APTR: /* AV* reference */
	533	ptr = SSPOPPTR;
	534	(AV)ptr = (AV)SSPOPPTR;
	535	break;
	536	case SAVEt_NSTAB:
	537	gv = (GV*)SSPOPPTR;
1f96a9ed	538	(void)sv_clear((SV*)gv);
79072805 LW	539	break;
	540	case SAVEt_GP: /* scalar reference */
	541	ptr = SSPOPPTR;
	542	gv = (GV*)SSPOPPTR;
	543	gp_free(gv);
	544	GvGP(gv) = (GP*)ptr;
4633a7c4	545	SvREFCNT_dec(gv);
79072805	546	break;
8990e307 LW	547	case SAVEt_FREESV:
	548	ptr = SSPOPPTR;
	549	SvREFCNT_dec((SV*)ptr);
	550	break;
	551	case SAVEt_FREEOP:
	552	ptr = SSPOPPTR;
	553	curpad = AvARRAY(comppad);
	554	op_free((OP*)ptr);
	555	break;
	556	case SAVEt_FREEPV:
	557	ptr = SSPOPPTR;
	558	Safefree((char*)ptr);
	559	break;
	560	case SAVEt_CLEARSV:
4aa0a1f7	561	ptr = (void*)&curpad[SSPOPLONG];
8990e307	562	sv = (SV*)ptr;
a0d0e21e	563	if (SvREFCNT(sv) <= 1) { /* Can clear pad variable in place. */
8990e307 LW	564	if (SvTHINKFIRST(sv)) {
	565	if (SvREADONLY(sv))
	566	croak("panic: leave_scope clearsv");
	567	if (SvROK(sv))
	568	sv_unref(sv);
	569	}
a0d0e21e LW	570	if (SvMAGICAL(sv))
a0d0e21e LW	571	mg_free(sv);
8990e307 LW	572
	573	switch (SvTYPE(sv)) {
	574	case SVt_NULL:
	575	break;
	576	case SVt_PVAV:
	577	av_clear((AV*)sv);
	578	break;
	579	case SVt_PVHV:
	580	hv_clear((HV*)sv);
	581	break;
	582	case SVt_PVCV:
	583	sub_generation++;
85e6fe83	584	cv_undef((CV*)sv);
8990e307 LW	585	break;
	586	default:
	587	if (SvPOK(sv) && SvLEN(sv))
a0d0e21e LW	588	(void)SvOOK_off(sv);
a0d0e21e LW	589	(void)SvOK_off(sv);
8990e307 LW	590	break;
	591	}
	592	}
	593	else { /* Someone has a claim on this, so abandon it. */
4aa0a1f7	594	U32 padflags = SvFLAGS(sv) & (SVs_PADBUSY\|SVs_PADMY\|SVs_PADTMP);
8990e307 LW	595	SvREFCNT_dec(sv); /* Cast current value to the winds. */
	596	switch (SvTYPE(sv)) { /* Console ourselves with a new value */
	597	case SVt_PVAV: (SV)ptr = (SV)newAV(); break;
	598	case SVt_PVHV: (SV)ptr = (SV)newHV(); break;
	599	default: (SV*)ptr = NEWSV(0,0); break;
	600	}
4aa0a1f7	601	SvFLAGS((SV)ptr) \|= padflags; / preserve pad nature */
8990e307 LW	602	}
	603	break;
	604	case SAVEt_DELETE:
	605	ptr = SSPOPPTR;
	606	hv = (HV*)ptr;
	607	ptr = SSPOPPTR;
748a9306	608	(void)hv_delete(hv, (char*)ptr, (U32)SSPOPINT, G_DISCARD);
adbc6bb1	609	Safefree(ptr);
8990e307	610	break;
a0d0e21e LW	611	case SAVEt_DESTRUCTOR:
	612	ptr = SSPOPPTR;
	613	(*SSPOPDPTR)(ptr);
	614	break;
	615	case SAVEt_REGCONTEXT:
8e07c86e AD	616	{
	617	I32 delta = SSPOPINT;
	618	savestack_ix -= delta; /* regexp must have croaked */
	619	}
a0d0e21e	620	break;
55497cff	621	case SAVEt_STACK_POS: /* Position on Perl stack */
	622	{
	623	I32 delta = SSPOPINT;
	624	stack_sp = stack_base + delta;
	625	}
	626	break;
79072805	627	default:
463ee0b2	628	croak("panic: leave_scope inconsistency");
79072805 LW	629	}
	630	}
	631	}
8990e307 LW	632
8990e307 LW	633	#ifdef DEBUGGING
1f96a9ed	634
8990e307 LW	635	void
	636	cx_dump(cx)
	637	CONTEXT* cx;
	638	{
760ac839	639	PerlIO_printf(Perl_debug_log, "CX %d = %s\n", cx - cxstack, block_type[cx->cx_type]);
8990e307	640	if (cx->cx_type != CXt_SUBST) {
760ac839 LW	641	PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp);
	642	PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%lx\n", (long)cx->blk_oldcop);
	643	PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp);
	644	PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp);
	645	PerlIO_printf(Perl_debug_log, "BLK_OLDRETSP = %ld\n", (long)cx->blk_oldretsp);
	646	PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%lx\n", (long)cx->blk_oldpm);
	647	PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR");
8990e307 LW	648	}
	649	switch (cx->cx_type) {
	650	case CXt_NULL:
	651	case CXt_BLOCK:
	652	break;
	653	case CXt_SUB:
760ac839	654	PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%lx\n",
8990e307	655	(long)cx->blk_sub.cv);
760ac839	656	PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%lx\n",
8990e307	657	(long)cx->blk_sub.gv);
760ac839	658	PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%lx\n",
8990e307	659	(long)cx->blk_sub.dfoutgv);
760ac839	660	PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n",
8990e307	661	(long)cx->blk_sub.olddepth);
760ac839	662	PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n",
8990e307 LW	663	(int)cx->blk_sub.hasargs);
	664	break;
	665	case CXt_EVAL:
760ac839	666	PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n",
8990e307	667	(long)cx->blk_eval.old_in_eval);
760ac839	668	PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n",
c07a80fd	669	op_name[cx->blk_eval.old_op_type],
c07a80fd	670	op_desc[cx->blk_eval.old_op_type]);
760ac839	671	PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n",
8990e307	672	cx->blk_eval.old_name);
760ac839	673	PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%lx\n",
8990e307 LW	674	(long)cx->blk_eval.old_eval_root);
	675	break;
	676
	677	case CXt_LOOP:
760ac839	678	PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n",
8990e307	679	cx->blk_loop.label);
760ac839	680	PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n",
8990e307	681	(long)cx->blk_loop.resetsp);
760ac839	682	PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%lx\n",
8990e307	683	(long)cx->blk_loop.redo_op);
760ac839	684	PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%lx\n",
8990e307	685	(long)cx->blk_loop.next_op);
760ac839	686	PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%lx\n",
8990e307	687	(long)cx->blk_loop.last_op);
760ac839	688	PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n",
8990e307	689	(long)cx->blk_loop.iterix);
760ac839	690	PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%lx\n",
8990e307	691	(long)cx->blk_loop.iterary);
760ac839	692	PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%lx\n",
8990e307 LW	693	(long)cx->blk_loop.itervar);
8990e307 LW	694	if (cx->blk_loop.itervar)
760ac839	695	PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%lx\n",
8990e307 LW	696	(long)cx->blk_loop.itersave);
	697	break;
	698
	699	case CXt_SUBST:
760ac839	700	PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n",
8990e307	701	(long)cx->sb_iters);
760ac839	702	PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n",
8990e307	703	(long)cx->sb_maxiters);
760ac839	704	PerlIO_printf(Perl_debug_log, "SB_SAFEBASE = %ld\n",
8990e307	705	(long)cx->sb_safebase);
760ac839	706	PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n",
8990e307	707	(long)cx->sb_once);
760ac839	708	PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n",
8990e307	709	cx->sb_orig);
760ac839	710	PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%lx\n",
8990e307	711	(long)cx->sb_dstr);
760ac839	712	PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%lx\n",
8990e307	713	(long)cx->sb_targ);
760ac839	714	PerlIO_printf(Perl_debug_log, "SB_S = 0x%lx\n",
8990e307	715	(long)cx->sb_s);
760ac839	716	PerlIO_printf(Perl_debug_log, "SB_M = 0x%lx\n",
8990e307	717	(long)cx->sb_m);
760ac839	718	PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%lx\n",
8990e307	719	(long)cx->sb_strend);
760ac839	720	PerlIO_printf(Perl_debug_log, "SB_SUBBASE = 0x%lx\n",
8990e307 LW	721	(long)cx->sb_subbase);
	722	break;
	723	}
	724	}
	725	#endif