| 1 | /* scope.c |
| 2 | * |
| 3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
| 4 | * 2000, 2001, 2002, 2003, 2004, by Larry Wall and others |
| 5 | * |
| 6 | * You may distribute under the terms of either the GNU General Public |
| 7 | * License or the Artistic License, as specified in the README file. |
| 8 | * |
| 9 | */ |
| 10 | |
| 11 | /* |
| 12 | * "For the fashion of Minas Tirith was such that it was built on seven |
| 13 | * levels..." |
| 14 | */ |
| 15 | |
| 16 | #include "EXTERN.h" |
| 17 | #define PERL_IN_SCOPE_C |
| 18 | #include "perl.h" |
| 19 | |
| 20 | #if defined(PERL_FLEXIBLE_EXCEPTIONS) |
| 21 | void * |
| 22 | Perl_default_protect(pTHX_ volatile JMPENV *pcur_env, int *excpt, |
| 23 | protect_body_t body, ...) |
| 24 | { |
| 25 | void *ret; |
| 26 | va_list args; |
| 27 | va_start(args, body); |
| 28 | ret = vdefault_protect(pcur_env, excpt, body, &args); |
| 29 | va_end(args); |
| 30 | return ret; |
| 31 | } |
| 32 | |
| 33 | void * |
| 34 | Perl_vdefault_protect(pTHX_ volatile JMPENV *pcur_env, int *excpt, |
| 35 | protect_body_t body, va_list *args) |
| 36 | { |
| 37 | int ex; |
| 38 | void *ret; |
| 39 | |
| 40 | JMPENV_PUSH(ex); |
| 41 | if (ex) |
| 42 | ret = NULL; |
| 43 | else |
| 44 | ret = CALL_FPTR(body)(aTHX_ *args); |
| 45 | *excpt = ex; |
| 46 | JMPENV_POP; |
| 47 | return ret; |
| 48 | } |
| 49 | #endif |
| 50 | |
| 51 | SV** |
| 52 | Perl_stack_grow(pTHX_ SV **sp, SV **p, int n) |
| 53 | { |
| 54 | PL_stack_sp = sp; |
| 55 | #ifndef STRESS_REALLOC |
| 56 | av_extend(PL_curstack, (p - PL_stack_base) + (n) + 128); |
| 57 | #else |
| 58 | av_extend(PL_curstack, (p - PL_stack_base) + (n) + 1); |
| 59 | #endif |
| 60 | return PL_stack_sp; |
| 61 | } |
| 62 | |
| 63 | #ifndef STRESS_REALLOC |
| 64 | #define GROW(old) ((old) * 3 / 2) |
| 65 | #else |
| 66 | #define GROW(old) ((old) + 1) |
| 67 | #endif |
| 68 | |
| 69 | PERL_SI * |
| 70 | Perl_new_stackinfo(pTHX_ I32 stitems, I32 cxitems) |
| 71 | { |
| 72 | PERL_SI *si; |
| 73 | New(56, si, 1, PERL_SI); |
| 74 | si->si_stack = newAV(); |
| 75 | AvREAL_off(si->si_stack); |
| 76 | av_extend(si->si_stack, stitems > 0 ? stitems-1 : 0); |
| 77 | AvALLOC(si->si_stack)[0] = &PL_sv_undef; |
| 78 | AvFILLp(si->si_stack) = 0; |
| 79 | si->si_prev = 0; |
| 80 | si->si_next = 0; |
| 81 | si->si_cxmax = cxitems - 1; |
| 82 | si->si_cxix = -1; |
| 83 | si->si_type = PERLSI_UNDEF; |
| 84 | New(56, si->si_cxstack, cxitems, PERL_CONTEXT); |
| 85 | /* Without any kind of initialising PUSHSUBST() |
| 86 | * in pp_subst() will read uninitialised heap. */ |
| 87 | Poison(si->si_cxstack, cxitems, PERL_CONTEXT); |
| 88 | return si; |
| 89 | } |
| 90 | |
| 91 | I32 |
| 92 | Perl_cxinc(pTHX) |
| 93 | { |
| 94 | IV old_max = cxstack_max; |
| 95 | cxstack_max = GROW(cxstack_max); |
| 96 | Renew(cxstack, cxstack_max + 1, PERL_CONTEXT); /* XXX should fix CXINC macro */ |
| 97 | /* Without any kind of initialising deep enough recursion |
| 98 | * will end up reading uninitialised PERL_CONTEXTs. */ |
| 99 | Poison(cxstack + old_max + 1, cxstack_max - old_max, PERL_CONTEXT); |
| 100 | return cxstack_ix + 1; |
| 101 | } |
| 102 | |
| 103 | void |
| 104 | Perl_push_return(pTHX_ OP *retop) |
| 105 | { |
| 106 | if (PL_retstack_ix == PL_retstack_max) { |
| 107 | PL_retstack_max = GROW(PL_retstack_max); |
| 108 | Renew(PL_retstack, PL_retstack_max, OP*); |
| 109 | } |
| 110 | PL_retstack[PL_retstack_ix++] = retop; |
| 111 | } |
| 112 | |
| 113 | OP * |
| 114 | Perl_pop_return(pTHX) |
| 115 | { |
| 116 | if (PL_retstack_ix > 0) |
| 117 | return PL_retstack[--PL_retstack_ix]; |
| 118 | else |
| 119 | return Nullop; |
| 120 | } |
| 121 | |
| 122 | void |
| 123 | Perl_push_scope(pTHX) |
| 124 | { |
| 125 | if (PL_scopestack_ix == PL_scopestack_max) { |
| 126 | PL_scopestack_max = GROW(PL_scopestack_max); |
| 127 | Renew(PL_scopestack, PL_scopestack_max, I32); |
| 128 | } |
| 129 | PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix; |
| 130 | |
| 131 | } |
| 132 | |
| 133 | void |
| 134 | Perl_pop_scope(pTHX) |
| 135 | { |
| 136 | I32 oldsave = PL_scopestack[--PL_scopestack_ix]; |
| 137 | LEAVE_SCOPE(oldsave); |
| 138 | } |
| 139 | |
| 140 | void |
| 141 | Perl_markstack_grow(pTHX) |
| 142 | { |
| 143 | I32 oldmax = PL_markstack_max - PL_markstack; |
| 144 | I32 newmax = GROW(oldmax); |
| 145 | |
| 146 | Renew(PL_markstack, newmax, I32); |
| 147 | PL_markstack_ptr = PL_markstack + oldmax; |
| 148 | PL_markstack_max = PL_markstack + newmax; |
| 149 | } |
| 150 | |
| 151 | void |
| 152 | Perl_savestack_grow(pTHX) |
| 153 | { |
| 154 | PL_savestack_max = GROW(PL_savestack_max) + 4; |
| 155 | Renew(PL_savestack, PL_savestack_max, ANY); |
| 156 | } |
| 157 | |
| 158 | void |
| 159 | Perl_savestack_grow_cnt(pTHX_ I32 need) |
| 160 | { |
| 161 | PL_savestack_max = PL_savestack_ix + need; |
| 162 | Renew(PL_savestack, PL_savestack_max, ANY); |
| 163 | } |
| 164 | |
| 165 | #undef GROW |
| 166 | |
| 167 | void |
| 168 | Perl_tmps_grow(pTHX_ I32 n) |
| 169 | { |
| 170 | #ifndef STRESS_REALLOC |
| 171 | if (n < 128) |
| 172 | n = (PL_tmps_max < 512) ? 128 : 512; |
| 173 | #endif |
| 174 | PL_tmps_max = PL_tmps_ix + n + 1; |
| 175 | Renew(PL_tmps_stack, PL_tmps_max, SV*); |
| 176 | } |
| 177 | |
| 178 | |
| 179 | void |
| 180 | Perl_free_tmps(pTHX) |
| 181 | { |
| 182 | /* XXX should tmps_floor live in cxstack? */ |
| 183 | I32 myfloor = PL_tmps_floor; |
| 184 | while (PL_tmps_ix > myfloor) { /* clean up after last statement */ |
| 185 | SV* sv = PL_tmps_stack[PL_tmps_ix]; |
| 186 | PL_tmps_stack[PL_tmps_ix--] = Nullsv; |
| 187 | if (sv && sv != &PL_sv_undef) { |
| 188 | SvTEMP_off(sv); |
| 189 | SvREFCNT_dec(sv); /* note, can modify tmps_ix!!! */ |
| 190 | } |
| 191 | } |
| 192 | } |
| 193 | |
| 194 | STATIC SV * |
| 195 | S_save_scalar_at(pTHX_ SV **sptr) |
| 196 | { |
| 197 | register SV *sv; |
| 198 | SV *osv = *sptr; |
| 199 | |
| 200 | sv = *sptr = NEWSV(0,0); |
| 201 | if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv) && SvTYPE(osv) != SVt_PVGV) { |
| 202 | MAGIC *mg; |
| 203 | sv_upgrade(sv, SvTYPE(osv)); |
| 204 | if (SvGMAGICAL(osv)) { |
| 205 | bool oldtainted = PL_tainted; |
| 206 | mg_get(osv); /* note, can croak! */ |
| 207 | if (PL_tainting && PL_tainted && |
| 208 | (mg = mg_find(osv, PERL_MAGIC_taint))) { |
| 209 | SAVESPTR(mg->mg_obj); |
| 210 | mg->mg_obj = osv; |
| 211 | } |
| 212 | SvFLAGS(osv) |= (SvFLAGS(osv) & |
| 213 | (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
| 214 | PL_tainted = oldtainted; |
| 215 | } |
| 216 | SvMAGIC(sv) = SvMAGIC(osv); |
| 217 | /* if it's a special scalar or if it has no 'set' magic, |
| 218 | * propagate the SvREADONLY flag. --rgs 20030922 */ |
| 219 | for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { |
| 220 | if (SvMAGIC(sv)->mg_type == '\0' |
| 221 | || !SvMAGIC(sv)->mg_virtual->svt_set) |
| 222 | { |
| 223 | SvFLAGS(sv) |= SvREADONLY(osv); |
| 224 | break; |
| 225 | } |
| 226 | } |
| 227 | SvFLAGS(sv) |= SvMAGICAL(osv); |
| 228 | /* XXX SvMAGIC() is *shared* between osv and sv. This can |
| 229 | * lead to coredumps when both SVs are destroyed without one |
| 230 | * of their SvMAGIC() slots being NULLed. */ |
| 231 | PL_localizing = 1; |
| 232 | SvSETMAGIC(sv); |
| 233 | PL_localizing = 0; |
| 234 | } |
| 235 | return sv; |
| 236 | } |
| 237 | |
| 238 | SV * |
| 239 | Perl_save_scalar(pTHX_ GV *gv) |
| 240 | { |
| 241 | SV **sptr = &GvSV(gv); |
| 242 | SSCHECK(3); |
| 243 | SSPUSHPTR(SvREFCNT_inc(gv)); |
| 244 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
| 245 | SSPUSHINT(SAVEt_SV); |
| 246 | return save_scalar_at(sptr); |
| 247 | } |
| 248 | |
| 249 | SV* |
| 250 | Perl_save_svref(pTHX_ SV **sptr) |
| 251 | { |
| 252 | SSCHECK(3); |
| 253 | SSPUSHPTR(sptr); |
| 254 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
| 255 | SSPUSHINT(SAVEt_SVREF); |
| 256 | return save_scalar_at(sptr); |
| 257 | } |
| 258 | |
| 259 | /* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to |
| 260 | * restore a global SV to its prior contents, freeing new value. */ |
| 261 | void |
| 262 | Perl_save_generic_svref(pTHX_ SV **sptr) |
| 263 | { |
| 264 | SSCHECK(3); |
| 265 | SSPUSHPTR(sptr); |
| 266 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
| 267 | SSPUSHINT(SAVEt_GENERIC_SVREF); |
| 268 | } |
| 269 | |
| 270 | /* Like save_pptr(), but also Safefree()s the new value if it is different |
| 271 | * from the old one. Can be used to restore a global char* to its prior |
| 272 | * contents, freeing new value. */ |
| 273 | void |
| 274 | Perl_save_generic_pvref(pTHX_ char **str) |
| 275 | { |
| 276 | SSCHECK(3); |
| 277 | SSPUSHPTR(str); |
| 278 | SSPUSHPTR(*str); |
| 279 | SSPUSHINT(SAVEt_GENERIC_PVREF); |
| 280 | } |
| 281 | |
| 282 | /* Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree(). |
| 283 | * Can be used to restore a shared global char* to its prior |
| 284 | * contents, freeing new value. */ |
| 285 | void |
| 286 | Perl_save_shared_pvref(pTHX_ char **str) |
| 287 | { |
| 288 | SSCHECK(3); |
| 289 | SSPUSHPTR(str); |
| 290 | SSPUSHPTR(*str); |
| 291 | SSPUSHINT(SAVEt_SHARED_PVREF); |
| 292 | } |
| 293 | |
| 294 | /* set the SvFLAGS specified by mask to the values in val */ |
| 295 | |
| 296 | void |
| 297 | Perl_save_set_svflags(pTHX_ SV* sv, U32 mask, U32 val) |
| 298 | { |
| 299 | SSCHECK(4); |
| 300 | SSPUSHPTR(sv); |
| 301 | SSPUSHINT(mask); |
| 302 | SSPUSHINT(val); |
| 303 | SSPUSHINT(SAVEt_SET_SVFLAGS); |
| 304 | } |
| 305 | |
| 306 | void |
| 307 | Perl_save_gp(pTHX_ GV *gv, I32 empty) |
| 308 | { |
| 309 | SSGROW(6); |
| 310 | SSPUSHIV((IV)SvLEN(gv)); |
| 311 | SvLEN(gv) = 0; /* forget that anything was allocated here */ |
| 312 | SSPUSHIV((IV)SvCUR(gv)); |
| 313 | SSPUSHPTR(SvPVX(gv)); |
| 314 | SvPOK_off(gv); |
| 315 | SSPUSHPTR(SvREFCNT_inc(gv)); |
| 316 | SSPUSHPTR(GvGP(gv)); |
| 317 | SSPUSHINT(SAVEt_GP); |
| 318 | |
| 319 | if (empty) { |
| 320 | register GP *gp; |
| 321 | |
| 322 | Newz(602, gp, 1, GP); |
| 323 | |
| 324 | if (GvCVu(gv)) |
| 325 | PL_sub_generation++; /* taking a method out of circulation */ |
| 326 | if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) { |
| 327 | gp->gp_io = newIO(); |
| 328 | IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START; |
| 329 | } |
| 330 | GvGP(gv) = gp_ref(gp); |
| 331 | GvSV(gv) = NEWSV(72,0); |
| 332 | GvLINE(gv) = CopLINE(PL_curcop); |
| 333 | GvFILE(gv) = CopFILE(PL_curcop) ? CopFILE(PL_curcop) : ""; |
| 334 | GvEGV(gv) = gv; |
| 335 | } |
| 336 | else { |
| 337 | gp_ref(GvGP(gv)); |
| 338 | GvINTRO_on(gv); |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | AV * |
| 343 | Perl_save_ary(pTHX_ GV *gv) |
| 344 | { |
| 345 | AV *oav = GvAVn(gv); |
| 346 | AV *av; |
| 347 | |
| 348 | if (!AvREAL(oav) && AvREIFY(oav)) |
| 349 | av_reify(oav); |
| 350 | SSCHECK(3); |
| 351 | SSPUSHPTR(gv); |
| 352 | SSPUSHPTR(oav); |
| 353 | SSPUSHINT(SAVEt_AV); |
| 354 | |
| 355 | GvAV(gv) = Null(AV*); |
| 356 | av = GvAVn(gv); |
| 357 | if (SvMAGIC(oav)) { |
| 358 | SvMAGIC(av) = SvMAGIC(oav); |
| 359 | SvFLAGS((SV*)av) |= SvMAGICAL(oav); |
| 360 | SvMAGICAL_off(oav); |
| 361 | SvMAGIC(oav) = 0; |
| 362 | PL_localizing = 1; |
| 363 | SvSETMAGIC((SV*)av); |
| 364 | PL_localizing = 0; |
| 365 | } |
| 366 | return av; |
| 367 | } |
| 368 | |
| 369 | HV * |
| 370 | Perl_save_hash(pTHX_ GV *gv) |
| 371 | { |
| 372 | HV *ohv, *hv; |
| 373 | |
| 374 | SSCHECK(3); |
| 375 | SSPUSHPTR(gv); |
| 376 | SSPUSHPTR(ohv = GvHVn(gv)); |
| 377 | SSPUSHINT(SAVEt_HV); |
| 378 | |
| 379 | GvHV(gv) = Null(HV*); |
| 380 | hv = GvHVn(gv); |
| 381 | if (SvMAGIC(ohv)) { |
| 382 | SvMAGIC(hv) = SvMAGIC(ohv); |
| 383 | SvFLAGS((SV*)hv) |= SvMAGICAL(ohv); |
| 384 | SvMAGICAL_off(ohv); |
| 385 | SvMAGIC(ohv) = 0; |
| 386 | PL_localizing = 1; |
| 387 | SvSETMAGIC((SV*)hv); |
| 388 | PL_localizing = 0; |
| 389 | } |
| 390 | return hv; |
| 391 | } |
| 392 | |
| 393 | void |
| 394 | Perl_save_item(pTHX_ register SV *item) |
| 395 | { |
| 396 | register SV *sv = NEWSV(0,0); |
| 397 | |
| 398 | sv_setsv(sv,item); |
| 399 | SSCHECK(3); |
| 400 | SSPUSHPTR(item); /* remember the pointer */ |
| 401 | SSPUSHPTR(sv); /* remember the value */ |
| 402 | SSPUSHINT(SAVEt_ITEM); |
| 403 | } |
| 404 | |
| 405 | void |
| 406 | Perl_save_int(pTHX_ int *intp) |
| 407 | { |
| 408 | SSCHECK(3); |
| 409 | SSPUSHINT(*intp); |
| 410 | SSPUSHPTR(intp); |
| 411 | SSPUSHINT(SAVEt_INT); |
| 412 | } |
| 413 | |
| 414 | void |
| 415 | Perl_save_long(pTHX_ long int *longp) |
| 416 | { |
| 417 | SSCHECK(3); |
| 418 | SSPUSHLONG(*longp); |
| 419 | SSPUSHPTR(longp); |
| 420 | SSPUSHINT(SAVEt_LONG); |
| 421 | } |
| 422 | |
| 423 | void |
| 424 | Perl_save_bool(pTHX_ bool *boolp) |
| 425 | { |
| 426 | SSCHECK(3); |
| 427 | SSPUSHBOOL(*boolp); |
| 428 | SSPUSHPTR(boolp); |
| 429 | SSPUSHINT(SAVEt_BOOL); |
| 430 | } |
| 431 | |
| 432 | void |
| 433 | Perl_save_I32(pTHX_ I32 *intp) |
| 434 | { |
| 435 | SSCHECK(3); |
| 436 | SSPUSHINT(*intp); |
| 437 | SSPUSHPTR(intp); |
| 438 | SSPUSHINT(SAVEt_I32); |
| 439 | } |
| 440 | |
| 441 | void |
| 442 | Perl_save_I16(pTHX_ I16 *intp) |
| 443 | { |
| 444 | SSCHECK(3); |
| 445 | SSPUSHINT(*intp); |
| 446 | SSPUSHPTR(intp); |
| 447 | SSPUSHINT(SAVEt_I16); |
| 448 | } |
| 449 | |
| 450 | void |
| 451 | Perl_save_I8(pTHX_ I8 *bytep) |
| 452 | { |
| 453 | SSCHECK(3); |
| 454 | SSPUSHINT(*bytep); |
| 455 | SSPUSHPTR(bytep); |
| 456 | SSPUSHINT(SAVEt_I8); |
| 457 | } |
| 458 | |
| 459 | void |
| 460 | Perl_save_iv(pTHX_ IV *ivp) |
| 461 | { |
| 462 | SSCHECK(3); |
| 463 | SSPUSHIV(*ivp); |
| 464 | SSPUSHPTR(ivp); |
| 465 | SSPUSHINT(SAVEt_IV); |
| 466 | } |
| 467 | |
| 468 | /* Cannot use save_sptr() to store a char* since the SV** cast will |
| 469 | * force word-alignment and we'll miss the pointer. |
| 470 | */ |
| 471 | void |
| 472 | Perl_save_pptr(pTHX_ char **pptr) |
| 473 | { |
| 474 | SSCHECK(3); |
| 475 | SSPUSHPTR(*pptr); |
| 476 | SSPUSHPTR(pptr); |
| 477 | SSPUSHINT(SAVEt_PPTR); |
| 478 | } |
| 479 | |
| 480 | void |
| 481 | Perl_save_vptr(pTHX_ void *ptr) |
| 482 | { |
| 483 | SSCHECK(3); |
| 484 | SSPUSHPTR(*(char**)ptr); |
| 485 | SSPUSHPTR(ptr); |
| 486 | SSPUSHINT(SAVEt_VPTR); |
| 487 | } |
| 488 | |
| 489 | void |
| 490 | Perl_save_sptr(pTHX_ SV **sptr) |
| 491 | { |
| 492 | SSCHECK(3); |
| 493 | SSPUSHPTR(*sptr); |
| 494 | SSPUSHPTR(sptr); |
| 495 | SSPUSHINT(SAVEt_SPTR); |
| 496 | } |
| 497 | |
| 498 | void |
| 499 | Perl_save_padsv(pTHX_ PADOFFSET off) |
| 500 | { |
| 501 | SSCHECK(4); |
| 502 | ASSERT_CURPAD_ACTIVE("save_padsv"); |
| 503 | SSPUSHPTR(PL_curpad[off]); |
| 504 | SSPUSHPTR(PL_comppad); |
| 505 | SSPUSHLONG((long)off); |
| 506 | SSPUSHINT(SAVEt_PADSV); |
| 507 | } |
| 508 | |
| 509 | SV ** |
| 510 | Perl_save_threadsv(pTHX_ PADOFFSET i) |
| 511 | { |
| 512 | Perl_croak(aTHX_ "panic: save_threadsv called in non-threaded perl"); |
| 513 | return 0; |
| 514 | } |
| 515 | |
| 516 | void |
| 517 | Perl_save_nogv(pTHX_ GV *gv) |
| 518 | { |
| 519 | SSCHECK(2); |
| 520 | SSPUSHPTR(gv); |
| 521 | SSPUSHINT(SAVEt_NSTAB); |
| 522 | } |
| 523 | |
| 524 | void |
| 525 | Perl_save_hptr(pTHX_ HV **hptr) |
| 526 | { |
| 527 | SSCHECK(3); |
| 528 | SSPUSHPTR(*hptr); |
| 529 | SSPUSHPTR(hptr); |
| 530 | SSPUSHINT(SAVEt_HPTR); |
| 531 | } |
| 532 | |
| 533 | void |
| 534 | Perl_save_aptr(pTHX_ AV **aptr) |
| 535 | { |
| 536 | SSCHECK(3); |
| 537 | SSPUSHPTR(*aptr); |
| 538 | SSPUSHPTR(aptr); |
| 539 | SSPUSHINT(SAVEt_APTR); |
| 540 | } |
| 541 | |
| 542 | void |
| 543 | Perl_save_freesv(pTHX_ SV *sv) |
| 544 | { |
| 545 | SSCHECK(2); |
| 546 | SSPUSHPTR(sv); |
| 547 | SSPUSHINT(SAVEt_FREESV); |
| 548 | } |
| 549 | |
| 550 | void |
| 551 | Perl_save_mortalizesv(pTHX_ SV *sv) |
| 552 | { |
| 553 | SSCHECK(2); |
| 554 | SSPUSHPTR(sv); |
| 555 | SSPUSHINT(SAVEt_MORTALIZESV); |
| 556 | } |
| 557 | |
| 558 | void |
| 559 | Perl_save_freeop(pTHX_ OP *o) |
| 560 | { |
| 561 | SSCHECK(2); |
| 562 | SSPUSHPTR(o); |
| 563 | SSPUSHINT(SAVEt_FREEOP); |
| 564 | } |
| 565 | |
| 566 | void |
| 567 | Perl_save_freepv(pTHX_ char *pv) |
| 568 | { |
| 569 | SSCHECK(2); |
| 570 | SSPUSHPTR(pv); |
| 571 | SSPUSHINT(SAVEt_FREEPV); |
| 572 | } |
| 573 | |
| 574 | void |
| 575 | Perl_save_clearsv(pTHX_ SV **svp) |
| 576 | { |
| 577 | ASSERT_CURPAD_ACTIVE("save_clearsv"); |
| 578 | SSCHECK(2); |
| 579 | SSPUSHLONG((long)(svp-PL_curpad)); |
| 580 | SSPUSHINT(SAVEt_CLEARSV); |
| 581 | SvPADSTALE_off(*svp); /* mark lexical as active */ |
| 582 | } |
| 583 | |
| 584 | void |
| 585 | Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen) |
| 586 | { |
| 587 | SSCHECK(4); |
| 588 | SSPUSHINT(klen); |
| 589 | SSPUSHPTR(key); |
| 590 | SSPUSHPTR(SvREFCNT_inc(hv)); |
| 591 | SSPUSHINT(SAVEt_DELETE); |
| 592 | } |
| 593 | |
| 594 | void |
| 595 | Perl_save_list(pTHX_ register SV **sarg, I32 maxsarg) |
| 596 | { |
| 597 | register SV *sv; |
| 598 | register I32 i; |
| 599 | |
| 600 | for (i = 1; i <= maxsarg; i++) { |
| 601 | sv = NEWSV(0,0); |
| 602 | sv_setsv(sv,sarg[i]); |
| 603 | SSCHECK(3); |
| 604 | SSPUSHPTR(sarg[i]); /* remember the pointer */ |
| 605 | SSPUSHPTR(sv); /* remember the value */ |
| 606 | SSPUSHINT(SAVEt_ITEM); |
| 607 | } |
| 608 | } |
| 609 | |
| 610 | void |
| 611 | Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p) |
| 612 | { |
| 613 | SSCHECK(3); |
| 614 | SSPUSHDPTR(f); |
| 615 | SSPUSHPTR(p); |
| 616 | SSPUSHINT(SAVEt_DESTRUCTOR); |
| 617 | } |
| 618 | |
| 619 | void |
| 620 | Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p) |
| 621 | { |
| 622 | SSCHECK(3); |
| 623 | SSPUSHDXPTR(f); |
| 624 | SSPUSHPTR(p); |
| 625 | SSPUSHINT(SAVEt_DESTRUCTOR_X); |
| 626 | } |
| 627 | |
| 628 | void |
| 629 | Perl_save_aelem(pTHX_ AV *av, I32 idx, SV **sptr) |
| 630 | { |
| 631 | SV *sv; |
| 632 | SSCHECK(4); |
| 633 | SSPUSHPTR(SvREFCNT_inc(av)); |
| 634 | SSPUSHINT(idx); |
| 635 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
| 636 | SSPUSHINT(SAVEt_AELEM); |
| 637 | /* if it gets reified later, the restore will have the wrong refcnt */ |
| 638 | if (!AvREAL(av) && AvREIFY(av)) |
| 639 | SvREFCNT_inc(*sptr); |
| 640 | save_scalar_at(sptr); |
| 641 | sv = *sptr; |
| 642 | /* If we're localizing a tied array element, this new sv |
| 643 | * won't actually be stored in the array - so it won't get |
| 644 | * reaped when the localize ends. Ensure it gets reaped by |
| 645 | * mortifying it instead. DAPM */ |
| 646 | if (SvTIED_mg(sv, PERL_MAGIC_tiedelem)) |
| 647 | sv_2mortal(sv); |
| 648 | } |
| 649 | |
| 650 | void |
| 651 | Perl_save_helem(pTHX_ HV *hv, SV *key, SV **sptr) |
| 652 | { |
| 653 | SV *sv; |
| 654 | SSCHECK(4); |
| 655 | SSPUSHPTR(SvREFCNT_inc(hv)); |
| 656 | SSPUSHPTR(SvREFCNT_inc(key)); |
| 657 | SSPUSHPTR(SvREFCNT_inc(*sptr)); |
| 658 | SSPUSHINT(SAVEt_HELEM); |
| 659 | save_scalar_at(sptr); |
| 660 | sv = *sptr; |
| 661 | /* If we're localizing a tied hash element, this new sv |
| 662 | * won't actually be stored in the hash - so it won't get |
| 663 | * reaped when the localize ends. Ensure it gets reaped by |
| 664 | * mortifying it instead. DAPM */ |
| 665 | if (SvTIED_mg(sv, PERL_MAGIC_tiedelem)) |
| 666 | sv_2mortal(sv); |
| 667 | } |
| 668 | |
| 669 | void |
| 670 | Perl_save_op(pTHX) |
| 671 | { |
| 672 | SSCHECK(2); |
| 673 | SSPUSHPTR(PL_op); |
| 674 | SSPUSHINT(SAVEt_OP); |
| 675 | } |
| 676 | |
| 677 | I32 |
| 678 | Perl_save_alloc(pTHX_ I32 size, I32 pad) |
| 679 | { |
| 680 | register I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix] |
| 681 | - (char*)PL_savestack); |
| 682 | register I32 elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack)); |
| 683 | |
| 684 | /* SSCHECK may not be good enough */ |
| 685 | while (PL_savestack_ix + elems + 2 > PL_savestack_max) |
| 686 | savestack_grow(); |
| 687 | |
| 688 | PL_savestack_ix += elems; |
| 689 | SSPUSHINT(elems); |
| 690 | SSPUSHINT(SAVEt_ALLOC); |
| 691 | return start; |
| 692 | } |
| 693 | |
| 694 | void |
| 695 | Perl_leave_scope(pTHX_ I32 base) |
| 696 | { |
| 697 | register SV *sv; |
| 698 | register SV *value; |
| 699 | register GV *gv; |
| 700 | register AV *av; |
| 701 | register HV *hv; |
| 702 | register void* ptr; |
| 703 | register char* str; |
| 704 | I32 i; |
| 705 | |
| 706 | if (base < -1) |
| 707 | Perl_croak(aTHX_ "panic: corrupt saved stack index"); |
| 708 | while (PL_savestack_ix > base) { |
| 709 | switch (SSPOPINT) { |
| 710 | case SAVEt_ITEM: /* normal string */ |
| 711 | value = (SV*)SSPOPPTR; |
| 712 | sv = (SV*)SSPOPPTR; |
| 713 | sv_replace(sv,value); |
| 714 | PL_localizing = 2; |
| 715 | SvSETMAGIC(sv); |
| 716 | PL_localizing = 0; |
| 717 | break; |
| 718 | case SAVEt_SV: /* scalar reference */ |
| 719 | value = (SV*)SSPOPPTR; |
| 720 | gv = (GV*)SSPOPPTR; |
| 721 | ptr = &GvSV(gv); |
| 722 | av = (AV*)gv; /* what to refcnt_dec */ |
| 723 | goto restore_sv; |
| 724 | case SAVEt_GENERIC_PVREF: /* generic pv */ |
| 725 | str = (char*)SSPOPPTR; |
| 726 | ptr = SSPOPPTR; |
| 727 | if (*(char**)ptr != str) { |
| 728 | Safefree(*(char**)ptr); |
| 729 | *(char**)ptr = str; |
| 730 | } |
| 731 | break; |
| 732 | case SAVEt_SHARED_PVREF: /* shared pv */ |
| 733 | str = (char*)SSPOPPTR; |
| 734 | ptr = SSPOPPTR; |
| 735 | if (*(char**)ptr != str) { |
| 736 | #ifdef NETWARE |
| 737 | PerlMem_free(*(char**)ptr); |
| 738 | #else |
| 739 | PerlMemShared_free(*(char**)ptr); |
| 740 | #endif |
| 741 | *(char**)ptr = str; |
| 742 | } |
| 743 | break; |
| 744 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
| 745 | value = (SV*)SSPOPPTR; |
| 746 | ptr = SSPOPPTR; |
| 747 | sv = *(SV**)ptr; |
| 748 | *(SV**)ptr = value; |
| 749 | SvREFCNT_dec(sv); |
| 750 | SvREFCNT_dec(value); |
| 751 | break; |
| 752 | case SAVEt_SVREF: /* scalar reference */ |
| 753 | value = (SV*)SSPOPPTR; |
| 754 | ptr = SSPOPPTR; |
| 755 | av = Nullav; /* what to refcnt_dec */ |
| 756 | restore_sv: |
| 757 | sv = *(SV**)ptr; |
| 758 | DEBUG_S(PerlIO_printf(Perl_debug_log, |
| 759 | "restore svref: %p %p:%s -> %p:%s\n", |
| 760 | ptr, sv, SvPEEK(sv), value, SvPEEK(value))); |
| 761 | if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv) && |
| 762 | SvTYPE(sv) != SVt_PVGV) |
| 763 | { |
| 764 | (void)SvUPGRADE(value, SvTYPE(sv)); |
| 765 | SvMAGIC(value) = SvMAGIC(sv); |
| 766 | SvFLAGS(value) |= SvMAGICAL(sv); |
| 767 | SvMAGICAL_off(sv); |
| 768 | SvMAGIC(sv) = 0; |
| 769 | } |
| 770 | /* XXX This branch is pretty bogus. This code irretrievably |
| 771 | * clears(!) the magic on the SV (either to avoid further |
| 772 | * croaking that might ensue when the SvSETMAGIC() below is |
| 773 | * called, or to avoid two different SVs pointing at the same |
| 774 | * SvMAGIC()). This needs a total rethink. --GSAR */ |
| 775 | else if (SvTYPE(value) >= SVt_PVMG && SvMAGIC(value) && |
| 776 | SvTYPE(value) != SVt_PVGV) |
| 777 | { |
| 778 | SvFLAGS(value) |= (SvFLAGS(value) & |
| 779 | (SVp_NOK|SVp_POK)) >> PRIVSHIFT; |
| 780 | SvMAGICAL_off(value); |
| 781 | /* XXX this is a leak when we get here because the |
| 782 | * mg_get() in save_scalar_at() croaked */ |
| 783 | SvMAGIC(value) = 0; |
| 784 | } |
| 785 | *(SV**)ptr = value; |
| 786 | SvREFCNT_dec(sv); |
| 787 | PL_localizing = 2; |
| 788 | SvSETMAGIC(value); |
| 789 | PL_localizing = 0; |
| 790 | SvREFCNT_dec(value); |
| 791 | if (av) /* actually an av, hv or gv */ |
| 792 | SvREFCNT_dec(av); |
| 793 | break; |
| 794 | case SAVEt_AV: /* array reference */ |
| 795 | av = (AV*)SSPOPPTR; |
| 796 | gv = (GV*)SSPOPPTR; |
| 797 | if (GvAV(gv)) { |
| 798 | AV *goner = GvAV(gv); |
| 799 | SvMAGIC(av) = SvMAGIC(goner); |
| 800 | SvFLAGS((SV*)av) |= SvMAGICAL(goner); |
| 801 | SvMAGICAL_off(goner); |
| 802 | SvMAGIC(goner) = 0; |
| 803 | SvREFCNT_dec(goner); |
| 804 | } |
| 805 | GvAV(gv) = av; |
| 806 | if (SvMAGICAL(av)) { |
| 807 | PL_localizing = 2; |
| 808 | SvSETMAGIC((SV*)av); |
| 809 | PL_localizing = 0; |
| 810 | } |
| 811 | break; |
| 812 | case SAVEt_HV: /* hash reference */ |
| 813 | hv = (HV*)SSPOPPTR; |
| 814 | gv = (GV*)SSPOPPTR; |
| 815 | if (GvHV(gv)) { |
| 816 | HV *goner = GvHV(gv); |
| 817 | SvMAGIC(hv) = SvMAGIC(goner); |
| 818 | SvFLAGS(hv) |= SvMAGICAL(goner); |
| 819 | SvMAGICAL_off(goner); |
| 820 | SvMAGIC(goner) = 0; |
| 821 | SvREFCNT_dec(goner); |
| 822 | } |
| 823 | GvHV(gv) = hv; |
| 824 | if (SvMAGICAL(hv)) { |
| 825 | PL_localizing = 2; |
| 826 | SvSETMAGIC((SV*)hv); |
| 827 | PL_localizing = 0; |
| 828 | } |
| 829 | break; |
| 830 | case SAVEt_INT: /* int reference */ |
| 831 | ptr = SSPOPPTR; |
| 832 | *(int*)ptr = (int)SSPOPINT; |
| 833 | break; |
| 834 | case SAVEt_LONG: /* long reference */ |
| 835 | ptr = SSPOPPTR; |
| 836 | *(long*)ptr = (long)SSPOPLONG; |
| 837 | break; |
| 838 | case SAVEt_BOOL: /* bool reference */ |
| 839 | ptr = SSPOPPTR; |
| 840 | *(bool*)ptr = (bool)SSPOPBOOL; |
| 841 | break; |
| 842 | case SAVEt_I32: /* I32 reference */ |
| 843 | ptr = SSPOPPTR; |
| 844 | *(I32*)ptr = (I32)SSPOPINT; |
| 845 | break; |
| 846 | case SAVEt_I16: /* I16 reference */ |
| 847 | ptr = SSPOPPTR; |
| 848 | *(I16*)ptr = (I16)SSPOPINT; |
| 849 | break; |
| 850 | case SAVEt_I8: /* I8 reference */ |
| 851 | ptr = SSPOPPTR; |
| 852 | *(I8*)ptr = (I8)SSPOPINT; |
| 853 | break; |
| 854 | case SAVEt_IV: /* IV reference */ |
| 855 | ptr = SSPOPPTR; |
| 856 | *(IV*)ptr = (IV)SSPOPIV; |
| 857 | break; |
| 858 | case SAVEt_SPTR: /* SV* reference */ |
| 859 | ptr = SSPOPPTR; |
| 860 | *(SV**)ptr = (SV*)SSPOPPTR; |
| 861 | break; |
| 862 | case SAVEt_VPTR: /* random* reference */ |
| 863 | case SAVEt_PPTR: /* char* reference */ |
| 864 | ptr = SSPOPPTR; |
| 865 | *(char**)ptr = (char*)SSPOPPTR; |
| 866 | break; |
| 867 | case SAVEt_HPTR: /* HV* reference */ |
| 868 | ptr = SSPOPPTR; |
| 869 | *(HV**)ptr = (HV*)SSPOPPTR; |
| 870 | break; |
| 871 | case SAVEt_APTR: /* AV* reference */ |
| 872 | ptr = SSPOPPTR; |
| 873 | *(AV**)ptr = (AV*)SSPOPPTR; |
| 874 | break; |
| 875 | case SAVEt_NSTAB: |
| 876 | gv = (GV*)SSPOPPTR; |
| 877 | (void)sv_clear((SV*)gv); |
| 878 | break; |
| 879 | case SAVEt_GP: /* scalar reference */ |
| 880 | ptr = SSPOPPTR; |
| 881 | gv = (GV*)SSPOPPTR; |
| 882 | if (SvPVX(gv) && SvLEN(gv) > 0) { |
| 883 | Safefree(SvPVX(gv)); |
| 884 | } |
| 885 | SvPVX(gv) = (char *)SSPOPPTR; |
| 886 | SvCUR(gv) = (STRLEN)SSPOPIV; |
| 887 | SvLEN(gv) = (STRLEN)SSPOPIV; |
| 888 | gp_free(gv); |
| 889 | GvGP(gv) = (GP*)ptr; |
| 890 | if (GvCVu(gv)) |
| 891 | PL_sub_generation++; /* putting a method back into circulation */ |
| 892 | SvREFCNT_dec(gv); |
| 893 | break; |
| 894 | case SAVEt_FREESV: |
| 895 | ptr = SSPOPPTR; |
| 896 | SvREFCNT_dec((SV*)ptr); |
| 897 | break; |
| 898 | case SAVEt_MORTALIZESV: |
| 899 | ptr = SSPOPPTR; |
| 900 | sv_2mortal((SV*)ptr); |
| 901 | break; |
| 902 | case SAVEt_FREEOP: |
| 903 | ptr = SSPOPPTR; |
| 904 | ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); /* XXX DAPM tmp */ |
| 905 | op_free((OP*)ptr); |
| 906 | break; |
| 907 | case SAVEt_FREEPV: |
| 908 | ptr = SSPOPPTR; |
| 909 | Safefree((char*)ptr); |
| 910 | break; |
| 911 | case SAVEt_CLEARSV: |
| 912 | ptr = (void*)&PL_curpad[SSPOPLONG]; |
| 913 | sv = *(SV**)ptr; |
| 914 | |
| 915 | DEBUG_Xv(PerlIO_printf(Perl_debug_log, |
| 916 | "Pad 0x%"UVxf"[0x%"UVxf"] clearsv: %ld sv=0x%"UVxf"<%"IVdf"> %s\n", |
| 917 | PTR2UV(PL_comppad), PTR2UV(PL_curpad), |
| 918 | (long)((SV **)ptr-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv), |
| 919 | (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon" |
| 920 | )); |
| 921 | |
| 922 | /* Can clear pad variable in place? */ |
| 923 | if (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) { |
| 924 | /* |
| 925 | * if a my variable that was made readonly is going out of |
| 926 | * scope, we want to remove the readonlyness so that it can |
| 927 | * go out of scope quietly |
| 928 | */ |
| 929 | if (SvPADMY(sv) && !SvFAKE(sv)) |
| 930 | SvREADONLY_off(sv); |
| 931 | |
| 932 | if (SvTHINKFIRST(sv)) |
| 933 | sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF); |
| 934 | if (SvMAGICAL(sv)) |
| 935 | mg_free(sv); |
| 936 | |
| 937 | switch (SvTYPE(sv)) { |
| 938 | case SVt_NULL: |
| 939 | break; |
| 940 | case SVt_PVAV: |
| 941 | av_clear((AV*)sv); |
| 942 | break; |
| 943 | case SVt_PVHV: |
| 944 | hv_clear((HV*)sv); |
| 945 | break; |
| 946 | case SVt_PVCV: |
| 947 | Perl_croak(aTHX_ "panic: leave_scope pad code"); |
| 948 | case SVt_RV: |
| 949 | case SVt_IV: |
| 950 | case SVt_NV: |
| 951 | (void)SvOK_off(sv); |
| 952 | break; |
| 953 | default: |
| 954 | (void)SvOK_off(sv); |
| 955 | (void)SvOOK_off(sv); |
| 956 | break; |
| 957 | } |
| 958 | SvPADSTALE_on(sv); /* mark as no longer live */ |
| 959 | } |
| 960 | else { /* Someone has a claim on this, so abandon it. */ |
| 961 | U32 padflags = SvFLAGS(sv) & (SVs_PADMY|SVs_PADTMP); |
| 962 | switch (SvTYPE(sv)) { /* Console ourselves with a new value */ |
| 963 | case SVt_PVAV: *(SV**)ptr = (SV*)newAV(); break; |
| 964 | case SVt_PVHV: *(SV**)ptr = (SV*)newHV(); break; |
| 965 | default: *(SV**)ptr = NEWSV(0,0); break; |
| 966 | } |
| 967 | SvREFCNT_dec(sv); /* Cast current value to the winds. */ |
| 968 | /* preserve pad nature, but also mark as not live |
| 969 | * for any closure capturing */ |
| 970 | SvFLAGS(*(SV**)ptr) |= padflags | SVs_PADSTALE; |
| 971 | } |
| 972 | break; |
| 973 | case SAVEt_DELETE: |
| 974 | ptr = SSPOPPTR; |
| 975 | hv = (HV*)ptr; |
| 976 | ptr = SSPOPPTR; |
| 977 | (void)hv_delete(hv, (char*)ptr, (U32)SSPOPINT, G_DISCARD); |
| 978 | SvREFCNT_dec(hv); |
| 979 | Safefree(ptr); |
| 980 | break; |
| 981 | case SAVEt_DESTRUCTOR: |
| 982 | ptr = SSPOPPTR; |
| 983 | (*SSPOPDPTR)(ptr); |
| 984 | break; |
| 985 | case SAVEt_DESTRUCTOR_X: |
| 986 | ptr = SSPOPPTR; |
| 987 | (*SSPOPDXPTR)(aTHX_ ptr); |
| 988 | break; |
| 989 | case SAVEt_REGCONTEXT: |
| 990 | case SAVEt_ALLOC: |
| 991 | i = SSPOPINT; |
| 992 | PL_savestack_ix -= i; /* regexp must have croaked */ |
| 993 | break; |
| 994 | case SAVEt_STACK_POS: /* Position on Perl stack */ |
| 995 | i = SSPOPINT; |
| 996 | PL_stack_sp = PL_stack_base + i; |
| 997 | break; |
| 998 | case SAVEt_AELEM: /* array element */ |
| 999 | value = (SV*)SSPOPPTR; |
| 1000 | i = SSPOPINT; |
| 1001 | av = (AV*)SSPOPPTR; |
| 1002 | if (!AvREAL(av) && AvREIFY(av)) /* undo reify guard */ |
| 1003 | SvREFCNT_dec(value); |
| 1004 | ptr = av_fetch(av,i,1); |
| 1005 | if (ptr) { |
| 1006 | sv = *(SV**)ptr; |
| 1007 | if (sv && sv != &PL_sv_undef) { |
| 1008 | if (SvTIED_mg((SV*)av, PERL_MAGIC_tied)) |
| 1009 | (void)SvREFCNT_inc(sv); |
| 1010 | goto restore_sv; |
| 1011 | } |
| 1012 | } |
| 1013 | SvREFCNT_dec(av); |
| 1014 | SvREFCNT_dec(value); |
| 1015 | break; |
| 1016 | case SAVEt_HELEM: /* hash element */ |
| 1017 | value = (SV*)SSPOPPTR; |
| 1018 | sv = (SV*)SSPOPPTR; |
| 1019 | hv = (HV*)SSPOPPTR; |
| 1020 | ptr = hv_fetch_ent(hv, sv, 1, 0); |
| 1021 | if (ptr) { |
| 1022 | SV *oval = HeVAL((HE*)ptr); |
| 1023 | if (oval && oval != &PL_sv_undef) { |
| 1024 | ptr = &HeVAL((HE*)ptr); |
| 1025 | if (SvTIED_mg((SV*)hv, PERL_MAGIC_tied)) |
| 1026 | (void)SvREFCNT_inc(*(SV**)ptr); |
| 1027 | SvREFCNT_dec(sv); |
| 1028 | av = (AV*)hv; /* what to refcnt_dec */ |
| 1029 | goto restore_sv; |
| 1030 | } |
| 1031 | } |
| 1032 | SvREFCNT_dec(hv); |
| 1033 | SvREFCNT_dec(sv); |
| 1034 | SvREFCNT_dec(value); |
| 1035 | break; |
| 1036 | case SAVEt_OP: |
| 1037 | PL_op = (OP*)SSPOPPTR; |
| 1038 | break; |
| 1039 | case SAVEt_HINTS: |
| 1040 | if ((PL_hints & HINT_LOCALIZE_HH) && GvHV(PL_hintgv)) { |
| 1041 | SvREFCNT_dec((SV*)GvHV(PL_hintgv)); |
| 1042 | GvHV(PL_hintgv) = NULL; |
| 1043 | } |
| 1044 | *(I32*)&PL_hints = (I32)SSPOPINT; |
| 1045 | break; |
| 1046 | case SAVEt_COMPPAD: |
| 1047 | PL_comppad = (PAD*)SSPOPPTR; |
| 1048 | if (PL_comppad) |
| 1049 | PL_curpad = AvARRAY(PL_comppad); |
| 1050 | else |
| 1051 | PL_curpad = Null(SV**); |
| 1052 | break; |
| 1053 | case SAVEt_PADSV: |
| 1054 | { |
| 1055 | PADOFFSET off = (PADOFFSET)SSPOPLONG; |
| 1056 | ptr = SSPOPPTR; |
| 1057 | if (ptr) |
| 1058 | AvARRAY((PAD*)ptr)[off] = (SV*)SSPOPPTR; |
| 1059 | } |
| 1060 | break; |
| 1061 | case SAVEt_SET_SVFLAGS: |
| 1062 | { |
| 1063 | U32 val = (U32)SSPOPINT; |
| 1064 | U32 mask = (U32)SSPOPINT; |
| 1065 | sv = (SV*)SSPOPPTR; |
| 1066 | SvFLAGS(sv) &= ~mask; |
| 1067 | SvFLAGS(sv) |= val; |
| 1068 | } |
| 1069 | break; |
| 1070 | default: |
| 1071 | Perl_croak(aTHX_ "panic: leave_scope inconsistency"); |
| 1072 | } |
| 1073 | } |
| 1074 | } |
| 1075 | |
| 1076 | void |
| 1077 | Perl_cx_dump(pTHX_ PERL_CONTEXT *cx) |
| 1078 | { |
| 1079 | #ifdef DEBUGGING |
| 1080 | PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]); |
| 1081 | if (CxTYPE(cx) != CXt_SUBST) { |
| 1082 | PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp); |
| 1083 | PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%"UVxf"\n", |
| 1084 | PTR2UV(cx->blk_oldcop)); |
| 1085 | PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp); |
| 1086 | PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp); |
| 1087 | PerlIO_printf(Perl_debug_log, "BLK_OLDRETSP = %ld\n", (long)cx->blk_oldretsp); |
| 1088 | PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%"UVxf"\n", |
| 1089 | PTR2UV(cx->blk_oldpm)); |
| 1090 | PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", cx->blk_gimme ? "LIST" : "SCALAR"); |
| 1091 | } |
| 1092 | switch (CxTYPE(cx)) { |
| 1093 | case CXt_NULL: |
| 1094 | case CXt_BLOCK: |
| 1095 | break; |
| 1096 | case CXt_FORMAT: |
| 1097 | PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n", |
| 1098 | PTR2UV(cx->blk_sub.cv)); |
| 1099 | PerlIO_printf(Perl_debug_log, "BLK_SUB.GV = 0x%"UVxf"\n", |
| 1100 | PTR2UV(cx->blk_sub.gv)); |
| 1101 | PerlIO_printf(Perl_debug_log, "BLK_SUB.DFOUTGV = 0x%"UVxf"\n", |
| 1102 | PTR2UV(cx->blk_sub.dfoutgv)); |
| 1103 | PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n", |
| 1104 | (int)cx->blk_sub.hasargs); |
| 1105 | break; |
| 1106 | case CXt_SUB: |
| 1107 | PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%"UVxf"\n", |
| 1108 | PTR2UV(cx->blk_sub.cv)); |
| 1109 | PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n", |
| 1110 | (long)cx->blk_sub.olddepth); |
| 1111 | PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n", |
| 1112 | (int)cx->blk_sub.hasargs); |
| 1113 | PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n", |
| 1114 | (int)cx->blk_sub.lval); |
| 1115 | break; |
| 1116 | case CXt_EVAL: |
| 1117 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n", |
| 1118 | (long)cx->blk_eval.old_in_eval); |
| 1119 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n", |
| 1120 | PL_op_name[cx->blk_eval.old_op_type], |
| 1121 | PL_op_desc[cx->blk_eval.old_op_type]); |
| 1122 | if (cx->blk_eval.old_namesv) |
| 1123 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n", |
| 1124 | SvPVX(cx->blk_eval.old_namesv)); |
| 1125 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%"UVxf"\n", |
| 1126 | PTR2UV(cx->blk_eval.old_eval_root)); |
| 1127 | break; |
| 1128 | |
| 1129 | case CXt_LOOP: |
| 1130 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", |
| 1131 | cx->blk_loop.label); |
| 1132 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.RESETSP = %ld\n", |
| 1133 | (long)cx->blk_loop.resetsp); |
| 1134 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.REDO_OP = 0x%"UVxf"\n", |
| 1135 | PTR2UV(cx->blk_loop.redo_op)); |
| 1136 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.NEXT_OP = 0x%"UVxf"\n", |
| 1137 | PTR2UV(cx->blk_loop.next_op)); |
| 1138 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LAST_OP = 0x%"UVxf"\n", |
| 1139 | PTR2UV(cx->blk_loop.last_op)); |
| 1140 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n", |
| 1141 | (long)cx->blk_loop.iterix); |
| 1142 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%"UVxf"\n", |
| 1143 | PTR2UV(cx->blk_loop.iterary)); |
| 1144 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%"UVxf"\n", |
| 1145 | PTR2UV(CxITERVAR(cx))); |
| 1146 | if (CxITERVAR(cx)) |
| 1147 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%"UVxf"\n", |
| 1148 | PTR2UV(cx->blk_loop.itersave)); |
| 1149 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERLVAL = 0x%"UVxf"\n", |
| 1150 | PTR2UV(cx->blk_loop.iterlval)); |
| 1151 | break; |
| 1152 | |
| 1153 | case CXt_SUBST: |
| 1154 | PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n", |
| 1155 | (long)cx->sb_iters); |
| 1156 | PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n", |
| 1157 | (long)cx->sb_maxiters); |
| 1158 | PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n", |
| 1159 | (long)cx->sb_rflags); |
| 1160 | PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n", |
| 1161 | (long)cx->sb_once); |
| 1162 | PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n", |
| 1163 | cx->sb_orig); |
| 1164 | PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%"UVxf"\n", |
| 1165 | PTR2UV(cx->sb_dstr)); |
| 1166 | PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%"UVxf"\n", |
| 1167 | PTR2UV(cx->sb_targ)); |
| 1168 | PerlIO_printf(Perl_debug_log, "SB_S = 0x%"UVxf"\n", |
| 1169 | PTR2UV(cx->sb_s)); |
| 1170 | PerlIO_printf(Perl_debug_log, "SB_M = 0x%"UVxf"\n", |
| 1171 | PTR2UV(cx->sb_m)); |
| 1172 | PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%"UVxf"\n", |
| 1173 | PTR2UV(cx->sb_strend)); |
| 1174 | PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%"UVxf"\n", |
| 1175 | PTR2UV(cx->sb_rxres)); |
| 1176 | break; |
| 1177 | } |
| 1178 | #endif /* DEBUGGING */ |
| 1179 | } |