Commit | Line | Data |
---|---|---|
a0d0e21e | 1 | /* scope.c |
79072805 | 2 | * |
1129b882 NC |
3 | * Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
4 | * 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others | |
79072805 LW |
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 | * | |
a0d0e21e LW |
9 | */ |
10 | ||
11 | /* | |
4ac71550 TC |
12 | * For the fashion of Minas Tirith was such that it was built on seven |
13 | * levels... | |
14 | * | |
15 | * [p.751 of _The Lord of the Rings_, V/i: "Minas Tirith"] | |
79072805 LW |
16 | */ |
17 | ||
ddfa107c | 18 | /* This file contains functions to manipulate several of Perl's stacks; |
166f8a29 DM |
19 | * in particular it contains code to push various types of things onto |
20 | * the savestack, then to pop them off and perform the correct restorative | |
21 | * action for each one. This corresponds to the cleanup Perl does at | |
22 | * each scope exit. | |
23 | */ | |
24 | ||
79072805 | 25 | #include "EXTERN.h" |
864dbfa3 | 26 | #define PERL_IN_SCOPE_C |
79072805 LW |
27 | #include "perl.h" |
28 | ||
a0d0e21e | 29 | SV** |
fc16c392 | 30 | Perl_stack_grow(pTHX_ SV **sp, SV **p, SSize_t n) |
a0d0e21e | 31 | { |
402d079e DM |
32 | SSize_t extra; |
33 | SSize_t current = (p - PL_stack_base); | |
34 | ||
7918f24d NC |
35 | PERL_ARGS_ASSERT_STACK_GROW; |
36 | ||
402d079e | 37 | if (UNLIKELY(n < 0)) |
6768377c | 38 | Perl_croak(aTHX_ |
147e3846 | 39 | "panic: stack_grow() negative count (%" IVdf ")", (IV)n); |
6768377c | 40 | |
3280af22 | 41 | PL_stack_sp = sp; |
402d079e DM |
42 | extra = |
43 | #ifdef STRESS_REALLOC | |
44 | 1; | |
2ce36478 | 45 | #else |
402d079e | 46 | 128; |
2ce36478 | 47 | #endif |
402d079e DM |
48 | /* If the total might wrap, panic instead. This is really testing |
49 | * that (current + n + extra < SSize_t_MAX), but done in a way that | |
50 | * can't wrap */ | |
51 | if (UNLIKELY( current > SSize_t_MAX - extra | |
52 | || current + extra > SSize_t_MAX - n | |
53 | )) | |
54 | /* diag_listed_as: Out of memory during %s extend */ | |
55 | Perl_croak(aTHX_ "Out of memory during stack extend"); | |
56 | ||
57 | av_extend(PL_curstack, current + n + extra); | |
87058c31 DM |
58 | #ifdef DEBUGGING |
59 | PL_curstackinfo->si_stack_hwm = current + n + extra; | |
60 | #endif | |
61 | ||
3280af22 | 62 | return PL_stack_sp; |
a0d0e21e LW |
63 | } |
64 | ||
2ce36478 SM |
65 | #ifndef STRESS_REALLOC |
66 | #define GROW(old) ((old) * 3 / 2) | |
67 | #else | |
68 | #define GROW(old) ((old) + 1) | |
69 | #endif | |
70 | ||
e336de0d | 71 | PERL_SI * |
864dbfa3 | 72 | Perl_new_stackinfo(pTHX_ I32 stitems, I32 cxitems) |
e336de0d GS |
73 | { |
74 | PERL_SI *si; | |
a02a5408 | 75 | Newx(si, 1, PERL_SI); |
e336de0d GS |
76 | si->si_stack = newAV(); |
77 | AvREAL_off(si->si_stack); | |
78 | av_extend(si->si_stack, stitems > 0 ? stitems-1 : 0); | |
3280af22 | 79 | AvALLOC(si->si_stack)[0] = &PL_sv_undef; |
e336de0d GS |
80 | AvFILLp(si->si_stack) = 0; |
81 | si->si_prev = 0; | |
82 | si->si_next = 0; | |
83 | si->si_cxmax = cxitems - 1; | |
84 | si->si_cxix = -1; | |
e788e7d3 | 85 | si->si_type = PERLSI_UNDEF; |
a02a5408 | 86 | Newx(si->si_cxstack, cxitems, PERL_CONTEXT); |
490576d1 | 87 | /* Without any kind of initialising CX_PUSHSUBST() |
9965345d | 88 | * in pp_subst() will read uninitialised heap. */ |
7e337ee0 | 89 | PoisonNew(si->si_cxstack, cxitems, PERL_CONTEXT); |
e336de0d GS |
90 | return si; |
91 | } | |
92 | ||
79072805 | 93 | I32 |
864dbfa3 | 94 | Perl_cxinc(pTHX) |
79072805 | 95 | { |
a3b680e6 | 96 | const IV old_max = cxstack_max; |
00195859 HS |
97 | const IV new_max = GROW(cxstack_max); |
98 | Renew(cxstack, new_max + 1, PERL_CONTEXT); | |
99 | cxstack_max = new_max; | |
9965345d JH |
100 | /* Without any kind of initialising deep enough recursion |
101 | * will end up reading uninitialised PERL_CONTEXTs. */ | |
00195859 | 102 | PoisonNew(cxstack + old_max + 1, new_max - old_max, PERL_CONTEXT); |
79072805 LW |
103 | return cxstack_ix + 1; |
104 | } | |
105 | ||
79072805 | 106 | void |
864dbfa3 | 107 | Perl_push_scope(pTHX) |
79072805 | 108 | { |
5d9574c1 | 109 | if (UNLIKELY(PL_scopestack_ix == PL_scopestack_max)) { |
00195859 HS |
110 | const IV new_max = GROW(PL_scopestack_max); |
111 | Renew(PL_scopestack, new_max, I32); | |
d343c3ef | 112 | #ifdef DEBUGGING |
00195859 | 113 | Renew(PL_scopestack_name, new_max, const char*); |
520bb150 | 114 | #endif |
00195859 | 115 | PL_scopestack_max = new_max; |
79072805 | 116 | } |
d343c3ef GG |
117 | #ifdef DEBUGGING |
118 | PL_scopestack_name[PL_scopestack_ix] = "unknown"; | |
119 | #endif | |
3280af22 | 120 | PL_scopestack[PL_scopestack_ix++] = PL_savestack_ix; |
79072805 LW |
121 | |
122 | } | |
123 | ||
124 | void | |
864dbfa3 | 125 | Perl_pop_scope(pTHX) |
79072805 | 126 | { |
35a4481c | 127 | const I32 oldsave = PL_scopestack[--PL_scopestack_ix]; |
8990e307 | 128 | LEAVE_SCOPE(oldsave); |
79072805 LW |
129 | } |
130 | ||
ba5248fc | 131 | I32 * |
864dbfa3 | 132 | Perl_markstack_grow(pTHX) |
a0d0e21e | 133 | { |
35a4481c AL |
134 | const I32 oldmax = PL_markstack_max - PL_markstack; |
135 | const I32 newmax = GROW(oldmax); | |
a0d0e21e | 136 | |
3280af22 | 137 | Renew(PL_markstack, newmax, I32); |
3280af22 | 138 | PL_markstack_max = PL_markstack + newmax; |
ba5248fc | 139 | PL_markstack_ptr = PL_markstack + oldmax; |
30773234 | 140 | DEBUG_s(DEBUG_v(PerlIO_printf(Perl_debug_log, |
147e3846 | 141 | "MARK grow %p %" IVdf " by %" IVdf "\n", |
30773234 | 142 | PL_markstack_ptr, (IV)*PL_markstack_ptr, (IV)oldmax))); |
ba5248fc | 143 | return PL_markstack_ptr; |
a0d0e21e LW |
144 | } |
145 | ||
146 | void | |
864dbfa3 | 147 | Perl_savestack_grow(pTHX) |
79072805 | 148 | { |
00195859 | 149 | IV new_max; |
49706441 | 150 | #ifdef STRESS_REALLOC |
00195859 | 151 | new_max = PL_savestack_max + SS_MAXPUSH; |
49706441 | 152 | #else |
00195859 | 153 | new_max = GROW(PL_savestack_max); |
49706441 | 154 | #endif |
3caf0269 DM |
155 | /* Note that we allocate SS_MAXPUSH slots higher than ss_max |
156 | * so that SS_ADD_END(), SSGROW() etc can do a simper check */ | |
00195859 HS |
157 | Renew(PL_savestack, new_max + SS_MAXPUSH, ANY); |
158 | PL_savestack_max = new_max; | |
79072805 LW |
159 | } |
160 | ||
4b3c1a47 AE |
161 | void |
162 | Perl_savestack_grow_cnt(pTHX_ I32 need) | |
163 | { | |
00195859 | 164 | const IV new_max = PL_savestack_ix + need; |
3caf0269 DM |
165 | /* Note that we allocate SS_MAXPUSH slots higher than ss_max |
166 | * so that SS_ADD_END(), SSGROW() etc can do a simper check */ | |
00195859 HS |
167 | Renew(PL_savestack, new_max + SS_MAXPUSH, ANY); |
168 | PL_savestack_max = new_max; | |
4b3c1a47 AE |
169 | } |
170 | ||
2ce36478 SM |
171 | #undef GROW |
172 | ||
a953aca5 DD |
173 | /* The original function was called Perl_tmps_grow and was removed from public |
174 | API, Perl_tmps_grow_p is the replacement and it used in public macros but | |
175 | isn't public itself. | |
176 | ||
177 | Perl_tmps_grow_p takes a proposed ix. A proposed ix is PL_tmps_ix + extend_by, | |
178 | where the result of (PL_tmps_ix + extend_by) is >= PL_tmps_max | |
179 | Upon return, PL_tmps_stack[ix] will be a valid address. For machine code | |
180 | optimization and register usage reasons, the proposed ix passed into | |
181 | tmps_grow is returned to the caller which the caller can then use to write | |
182 | an SV * to PL_tmps_stack[ix]. If the caller was using tmps_grow in | |
183 | pre-extend mode (EXTEND_MORTAL macro), then it ignores the return value of | |
184 | tmps_grow. Note, tmps_grow DOES NOT write ix to PL_tmps_ix, the caller | |
185 | must assign ix or ret val of tmps_grow to PL_temps_ix themselves if that is | |
186 | appropriate. The assignment to PL_temps_ix can happen before or after | |
187 | tmps_grow call since tmps_grow doesn't look at PL_tmps_ix. | |
188 | */ | |
189 | ||
190 | SSize_t | |
191 | Perl_tmps_grow_p(pTHX_ SSize_t ix) | |
677b06e3 | 192 | { |
a953aca5 | 193 | SSize_t extend_to = ix; |
677b06e3 | 194 | #ifndef STRESS_REALLOC |
a953aca5 DD |
195 | if (ix - PL_tmps_max < 128) |
196 | extend_to += (PL_tmps_max < 512) ? 128 : 512; | |
677b06e3 | 197 | #endif |
00195859 | 198 | Renew(PL_tmps_stack, extend_to + 1, SV*); |
a953aca5 | 199 | PL_tmps_max = extend_to + 1; |
a953aca5 | 200 | return ix; |
677b06e3 GS |
201 | } |
202 | ||
203 | ||
204 | void | |
864dbfa3 | 205 | Perl_free_tmps(pTHX) |
79072805 LW |
206 | { |
207 | /* XXX should tmps_floor live in cxstack? */ | |
e8eb279c | 208 | const SSize_t myfloor = PL_tmps_floor; |
3280af22 | 209 | while (PL_tmps_ix > myfloor) { /* clean up after last statement */ |
22ade07d | 210 | SV* const sv = PL_tmps_stack[PL_tmps_ix--]; |
72581b5b VP |
211 | #ifdef PERL_POISON |
212 | PoisonWith(PL_tmps_stack + PL_tmps_ix + 1, 1, SV *, 0xAB); | |
22ade07d | 213 | #endif |
520275ba | 214 | if (LIKELY(sv)) { |
463ee0b2 | 215 | SvTEMP_off(sv); |
4a9a56a7 | 216 | SvREFCNT_dec_NN(sv); /* note, can modify tmps_ix!!! */ |
463ee0b2 | 217 | } |
79072805 LW |
218 | } |
219 | } | |
220 | ||
76e3520e | 221 | STATIC SV * |
af7df257 | 222 | S_save_scalar_at(pTHX_ SV **sptr, const U32 flags) |
79072805 | 223 | { |
75d34a09 | 224 | SV * osv; |
eb578fdb | 225 | SV *sv; |
79072805 | 226 | |
7918f24d NC |
227 | PERL_ARGS_ASSERT_SAVE_SCALAR_AT; |
228 | ||
75d34a09 | 229 | osv = *sptr; |
3c84a230 DM |
230 | if (flags & SAVEf_KEEPOLDELEM) |
231 | sv = osv; | |
232 | else { | |
233 | sv = (*sptr = newSV(0)); | |
234 | if (SvTYPE(osv) >= SVt_PVMG && SvMAGIC(osv)) | |
235 | mg_localize(osv, sv, cBOOL(flags & SAVEf_SETMAGIC)); | |
79072805 | 236 | } |
75d34a09 | 237 | |
79072805 LW |
238 | return sv; |
239 | } | |
240 | ||
dfcd3de5 NC |
241 | void |
242 | Perl_save_pushptrptr(pTHX_ void *const ptr1, void *const ptr2, const int type) | |
e22024d3 | 243 | { |
a3444cc5 DM |
244 | dSS_ADD; |
245 | SS_ADD_PTR(ptr1); | |
246 | SS_ADD_PTR(ptr2); | |
247 | SS_ADD_UV(type); | |
248 | SS_ADD_END(3); | |
e22024d3 NC |
249 | } |
250 | ||
7a4c00b4 | 251 | SV * |
864dbfa3 | 252 | Perl_save_scalar(pTHX_ GV *gv) |
7a4c00b4 | 253 | { |
13c59d41 | 254 | SV ** const sptr = &GvSVn(gv); |
7918f24d NC |
255 | |
256 | PERL_ARGS_ASSERT_SAVE_SCALAR; | |
257 | ||
13c59d41 | 258 | if (UNLIKELY(SvGMAGICAL(*sptr))) { |
b492a59e | 259 | PL_localizing = 1; |
13c59d41 | 260 | (void)mg_get(*sptr); |
b492a59e DM |
261 | PL_localizing = 0; |
262 | } | |
13c59d41 MH |
263 | save_pushptrptr(SvREFCNT_inc_simple(gv), SvREFCNT_inc(*sptr), SAVEt_SV); |
264 | return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */ | |
7a4c00b4 | 265 | } |
266 | ||
f4dd75d9 | 267 | /* Like save_sptr(), but also SvREFCNT_dec()s the new value. Can be used to |
b9d12d37 GS |
268 | * restore a global SV to its prior contents, freeing new value. */ |
269 | void | |
864dbfa3 | 270 | Perl_save_generic_svref(pTHX_ SV **sptr) |
b9d12d37 | 271 | { |
7918f24d NC |
272 | PERL_ARGS_ASSERT_SAVE_GENERIC_SVREF; |
273 | ||
e22024d3 | 274 | save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_GENERIC_SVREF); |
b9d12d37 GS |
275 | } |
276 | ||
f4dd75d9 GS |
277 | /* Like save_pptr(), but also Safefree()s the new value if it is different |
278 | * from the old one. Can be used to restore a global char* to its prior | |
279 | * contents, freeing new value. */ | |
280 | void | |
281 | Perl_save_generic_pvref(pTHX_ char **str) | |
282 | { | |
7918f24d NC |
283 | PERL_ARGS_ASSERT_SAVE_GENERIC_PVREF; |
284 | ||
e22024d3 | 285 | save_pushptrptr(*str, str, SAVEt_GENERIC_PVREF); |
f4dd75d9 GS |
286 | } |
287 | ||
05ec9bb3 NIS |
288 | /* Like save_generic_pvref(), but uses PerlMemShared_free() rather than Safefree(). |
289 | * Can be used to restore a shared global char* to its prior | |
290 | * contents, freeing new value. */ | |
291 | void | |
292 | Perl_save_shared_pvref(pTHX_ char **str) | |
293 | { | |
7918f24d NC |
294 | PERL_ARGS_ASSERT_SAVE_SHARED_PVREF; |
295 | ||
e22024d3 | 296 | save_pushptrptr(str, *str, SAVEt_SHARED_PVREF); |
05ec9bb3 NIS |
297 | } |
298 | ||
14f338dc DM |
299 | /* set the SvFLAGS specified by mask to the values in val */ |
300 | ||
301 | void | |
302 | Perl_save_set_svflags(pTHX_ SV* sv, U32 mask, U32 val) | |
303 | { | |
a3444cc5 | 304 | dSS_ADD; |
7918f24d NC |
305 | |
306 | PERL_ARGS_ASSERT_SAVE_SET_SVFLAGS; | |
307 | ||
a3444cc5 DM |
308 | SS_ADD_PTR(sv); |
309 | SS_ADD_INT(mask); | |
310 | SS_ADD_INT(val); | |
311 | SS_ADD_UV(SAVEt_SET_SVFLAGS); | |
312 | SS_ADD_END(4); | |
14f338dc DM |
313 | } |
314 | ||
364bbfa4 TC |
315 | /* |
316 | =for apidoc save_gp | |
317 | ||
318 | Saves the current GP of gv on the save stack to be restored on scope exit. | |
319 | ||
320 | If empty is true, replace the GP with a new GP. | |
321 | ||
322 | If empty is false, mark gv with GVf_INTRO so the next reference | |
323 | assigned is localized, which is how C< local *foo = $someref; > works. | |
324 | ||
325 | =cut | |
326 | */ | |
327 | ||
79072805 | 328 | void |
864dbfa3 | 329 | Perl_save_gp(pTHX_ GV *gv, I32 empty) |
79072805 | 330 | { |
7918f24d NC |
331 | PERL_ARGS_ASSERT_SAVE_GP; |
332 | ||
6881372e FC |
333 | /* XXX For now, we just upgrade any coderef in the stash to a full GV |
334 | during localisation. Maybe at some point we could make localis- | |
335 | ation work without needing the upgrade. (In which case our | |
336 | callers should probably call a different function, not save_gp.) | |
337 | */ | |
338 | if (!isGV(gv)) { | |
339 | assert(isGV_or_RVCV(gv)); | |
340 | (void)CvGV(SvRV((SV *)gv)); /* CvGV does the upgrade */ | |
341 | assert(isGV(gv)); | |
342 | } | |
343 | ||
10507e11 | 344 | save_pushptrptr(SvREFCNT_inc(gv), GvGP(gv), SAVEt_GP); |
79072805 | 345 | |
5f05dabc | 346 | if (empty) { |
12816592 | 347 | GP *gp = Perl_newGP(aTHX_ gv); |
959f7ad7 | 348 | HV * const stash = GvSTASH(gv); |
3d460042 FC |
349 | bool isa_changed = 0; |
350 | ||
351 | if (stash && HvENAME(stash)) { | |
b59bf0b2 | 352 | if (memEQs(GvNAME(gv), GvNAMELEN(gv), "ISA")) |
3d460042 FC |
353 | isa_changed = TRUE; |
354 | else if (GvCVu(gv)) | |
355 | /* taking a method out of circulation ("local")*/ | |
356 | mro_method_changed_in(stash); | |
357 | } | |
146174a9 CB |
358 | if (GvIOp(gv) && (IoFLAGS(GvIOp(gv)) & IOf_ARGV)) { |
359 | gp->gp_io = newIO(); | |
360 | IoFLAGS(gp->gp_io) |= IOf_ARGV|IOf_START; | |
361 | } | |
c43ae56f | 362 | GvGP_set(gv,gp); |
3d460042 | 363 | if (isa_changed) mro_isa_changed_in(stash); |
5f05dabc | 364 | } |
365 | else { | |
44a8e56a | 366 | gp_ref(GvGP(gv)); |
5f05dabc | 367 | GvINTRO_on(gv); |
368 | } | |
79072805 | 369 | } |
79072805 | 370 | |
79072805 | 371 | AV * |
864dbfa3 | 372 | Perl_save_ary(pTHX_ GV *gv) |
79072805 | 373 | { |
901017d6 | 374 | AV * const oav = GvAVn(gv); |
67a38de0 | 375 | AV *av; |
fb73857a | 376 | |
7918f24d NC |
377 | PERL_ARGS_ASSERT_SAVE_ARY; |
378 | ||
5d9574c1 | 379 | if (UNLIKELY(!AvREAL(oav) && AvREIFY(oav))) |
67a38de0 | 380 | av_reify(oav); |
01433346 | 381 | save_pushptrptr(SvREFCNT_inc_simple_NN(gv), oav, SAVEt_AV); |
79072805 | 382 | |
4608196e | 383 | GvAV(gv) = NULL; |
fb73857a | 384 | av = GvAVn(gv); |
5d9574c1 | 385 | if (UNLIKELY(SvMAGIC(oav))) |
9711599e | 386 | mg_localize(MUTABLE_SV(oav), MUTABLE_SV(av), TRUE); |
fb73857a | 387 | return av; |
79072805 LW |
388 | } |
389 | ||
390 | HV * | |
864dbfa3 | 391 | Perl_save_hash(pTHX_ GV *gv) |
79072805 | 392 | { |
fb73857a | 393 | HV *ohv, *hv; |
394 | ||
7918f24d NC |
395 | PERL_ARGS_ASSERT_SAVE_HASH; |
396 | ||
01433346 FC |
397 | save_pushptrptr( |
398 | SvREFCNT_inc_simple_NN(gv), (ohv = GvHVn(gv)), SAVEt_HV | |
399 | ); | |
79072805 | 400 | |
4608196e | 401 | GvHV(gv) = NULL; |
fb73857a | 402 | hv = GvHVn(gv); |
5d9574c1 | 403 | if (UNLIKELY(SvMAGIC(ohv))) |
9711599e | 404 | mg_localize(MUTABLE_SV(ohv), MUTABLE_SV(hv), TRUE); |
fb73857a | 405 | return hv; |
79072805 LW |
406 | } |
407 | ||
408 | void | |
5aaab254 | 409 | Perl_save_item(pTHX_ SV *item) |
79072805 | 410 | { |
eb578fdb | 411 | SV * const sv = newSVsv(item); |
79072805 | 412 | |
7918f24d NC |
413 | PERL_ARGS_ASSERT_SAVE_ITEM; |
414 | ||
e22024d3 NC |
415 | save_pushptrptr(item, /* remember the pointer */ |
416 | sv, /* remember the value */ | |
417 | SAVEt_ITEM); | |
79072805 LW |
418 | } |
419 | ||
420 | void | |
1409bc06 | 421 | Perl_save_bool(pTHX_ bool *boolp) |
79072805 | 422 | { |
a3444cc5 | 423 | dSS_ADD; |
7918f24d | 424 | |
1409bc06 | 425 | PERL_ARGS_ASSERT_SAVE_BOOL; |
7918f24d | 426 | |
a3444cc5 DM |
427 | SS_ADD_PTR(boolp); |
428 | SS_ADD_UV(SAVEt_BOOL | (*boolp << 8)); | |
429 | SS_ADD_END(2); | |
1409bc06 NC |
430 | } |
431 | ||
7623d426 NC |
432 | void |
433 | Perl_save_pushi32ptr(pTHX_ const I32 i, void *const ptr, const int type) | |
1409bc06 | 434 | { |
a3444cc5 DM |
435 | dSS_ADD; |
436 | ||
437 | SS_ADD_INT(i); | |
438 | SS_ADD_PTR(ptr); | |
439 | SS_ADD_UV(type); | |
440 | SS_ADD_END(3); | |
79072805 LW |
441 | } |
442 | ||
443 | void | |
1409bc06 | 444 | Perl_save_int(pTHX_ int *intp) |
9febdf04 | 445 | { |
d172696c | 446 | const int i = *intp; |
9b139d09 | 447 | UV type = ((UV)((UV)i << SAVE_TIGHT_SHIFT) | SAVEt_INT_SMALL); |
d172696c DM |
448 | int size = 2; |
449 | dSS_ADD; | |
7918f24d | 450 | |
1409bc06 | 451 | PERL_ARGS_ASSERT_SAVE_INT; |
7918f24d | 452 | |
5d9574c1 | 453 | if (UNLIKELY((int)(type >> SAVE_TIGHT_SHIFT) != i)) { |
d172696c DM |
454 | SS_ADD_INT(i); |
455 | type = SAVEt_INT; | |
456 | size++; | |
457 | } | |
458 | SS_ADD_PTR(intp); | |
459 | SS_ADD_UV(type); | |
460 | SS_ADD_END(size); | |
9febdf04 RH |
461 | } |
462 | ||
463 | void | |
58188858 RGS |
464 | Perl_save_I8(pTHX_ I8 *bytep) |
465 | { | |
a3444cc5 | 466 | dSS_ADD; |
7918f24d NC |
467 | |
468 | PERL_ARGS_ASSERT_SAVE_I8; | |
469 | ||
a3444cc5 DM |
470 | SS_ADD_PTR(bytep); |
471 | SS_ADD_UV(SAVEt_I8 | ((UV)*bytep << 8)); | |
472 | SS_ADD_END(2); | |
58188858 RGS |
473 | } |
474 | ||
475 | void | |
87a84751 JH |
476 | Perl_save_I16(pTHX_ I16 *intp) |
477 | { | |
a3444cc5 | 478 | dSS_ADD; |
7918f24d NC |
479 | |
480 | PERL_ARGS_ASSERT_SAVE_I16; | |
481 | ||
a3444cc5 DM |
482 | SS_ADD_PTR(intp); |
483 | SS_ADD_UV(SAVEt_I16 | ((UV)*intp << 8)); | |
484 | SS_ADD_END(2); | |
87a84751 JH |
485 | } |
486 | ||
487 | void | |
864dbfa3 | 488 | Perl_save_I32(pTHX_ I32 *intp) |
79072805 | 489 | { |
d172696c | 490 | const I32 i = *intp; |
9b139d09 | 491 | UV type = ((I32)((U32)i << SAVE_TIGHT_SHIFT) | SAVEt_I32_SMALL); |
d172696c DM |
492 | int size = 2; |
493 | dSS_ADD; | |
7918f24d NC |
494 | |
495 | PERL_ARGS_ASSERT_SAVE_I32; | |
496 | ||
5d9574c1 | 497 | if (UNLIKELY((I32)(type >> SAVE_TIGHT_SHIFT) != i)) { |
d172696c DM |
498 | SS_ADD_INT(i); |
499 | type = SAVEt_I32; | |
500 | size++; | |
501 | } | |
502 | SS_ADD_PTR(intp); | |
503 | SS_ADD_UV(type); | |
504 | SS_ADD_END(size); | |
79072805 LW |
505 | } |
506 | ||
e8eb279c FC |
507 | void |
508 | Perl_save_strlen(pTHX_ STRLEN *ptr) | |
509 | { | |
e8eb279c FC |
510 | dSS_ADD; |
511 | ||
512 | PERL_ARGS_ASSERT_SAVE_STRLEN; | |
513 | ||
514 | SS_ADD_IV(*ptr); | |
515 | SS_ADD_PTR(ptr); | |
516 | SS_ADD_UV(SAVEt_STRLEN); | |
517 | SS_ADD_END(3); | |
518 | } | |
519 | ||
f8c11501 FC |
520 | void |
521 | Perl_save_iv(pTHX_ IV *ivp) | |
522 | { | |
523 | PERL_ARGS_ASSERT_SAVE_IV; | |
524 | ||
525 | SSCHECK(3); | |
526 | SSPUSHIV(*ivp); | |
527 | SSPUSHPTR(ivp); | |
528 | SSPUSHUV(SAVEt_IV); | |
529 | } | |
530 | ||
85e6fe83 LW |
531 | /* Cannot use save_sptr() to store a char* since the SV** cast will |
532 | * force word-alignment and we'll miss the pointer. | |
533 | */ | |
534 | void | |
864dbfa3 | 535 | Perl_save_pptr(pTHX_ char **pptr) |
85e6fe83 | 536 | { |
7918f24d NC |
537 | PERL_ARGS_ASSERT_SAVE_PPTR; |
538 | ||
e22024d3 | 539 | save_pushptrptr(*pptr, pptr, SAVEt_PPTR); |
85e6fe83 LW |
540 | } |
541 | ||
79072805 | 542 | void |
146174a9 CB |
543 | Perl_save_vptr(pTHX_ void *ptr) |
544 | { | |
7918f24d NC |
545 | PERL_ARGS_ASSERT_SAVE_VPTR; |
546 | ||
e22024d3 | 547 | save_pushptrptr(*(char**)ptr, ptr, SAVEt_VPTR); |
146174a9 CB |
548 | } |
549 | ||
550 | void | |
864dbfa3 | 551 | Perl_save_sptr(pTHX_ SV **sptr) |
79072805 | 552 | { |
7918f24d NC |
553 | PERL_ARGS_ASSERT_SAVE_SPTR; |
554 | ||
e22024d3 | 555 | save_pushptrptr(*sptr, sptr, SAVEt_SPTR); |
79072805 LW |
556 | } |
557 | ||
c3564e5c | 558 | void |
09edbca0 | 559 | Perl_save_padsv_and_mortalize(pTHX_ PADOFFSET off) |
c3564e5c | 560 | { |
a3444cc5 DM |
561 | dSS_ADD; |
562 | ||
f3548bdc | 563 | ASSERT_CURPAD_ACTIVE("save_padsv"); |
a3444cc5 DM |
564 | SS_ADD_PTR(SvREFCNT_inc_simple_NN(PL_curpad[off])); |
565 | SS_ADD_PTR(PL_comppad); | |
03dba561 | 566 | SS_ADD_UV((UV)off); |
a3444cc5 DM |
567 | SS_ADD_UV(SAVEt_PADSV_AND_MORTALIZE); |
568 | SS_ADD_END(4); | |
c3564e5c GS |
569 | } |
570 | ||
79072805 | 571 | void |
864dbfa3 | 572 | Perl_save_hptr(pTHX_ HV **hptr) |
79072805 | 573 | { |
7918f24d NC |
574 | PERL_ARGS_ASSERT_SAVE_HPTR; |
575 | ||
e22024d3 | 576 | save_pushptrptr(*hptr, hptr, SAVEt_HPTR); |
79072805 LW |
577 | } |
578 | ||
579 | void | |
864dbfa3 | 580 | Perl_save_aptr(pTHX_ AV **aptr) |
79072805 | 581 | { |
7918f24d NC |
582 | PERL_ARGS_ASSERT_SAVE_APTR; |
583 | ||
e22024d3 | 584 | save_pushptrptr(*aptr, aptr, SAVEt_APTR); |
79072805 LW |
585 | } |
586 | ||
587 | void | |
2fd8beea | 588 | Perl_save_pushptr(pTHX_ void *const ptr, const int type) |
8990e307 | 589 | { |
a3444cc5 DM |
590 | dSS_ADD; |
591 | SS_ADD_PTR(ptr); | |
592 | SS_ADD_UV(type); | |
593 | SS_ADD_END(2); | |
8990e307 LW |
594 | } |
595 | ||
596 | void | |
864dbfa3 | 597 | Perl_save_clearsv(pTHX_ SV **svp) |
8990e307 | 598 | { |
cdcdfc56 NC |
599 | const UV offset = svp - PL_curpad; |
600 | const UV offset_shifted = offset << SAVE_TIGHT_SHIFT; | |
7918f24d NC |
601 | |
602 | PERL_ARGS_ASSERT_SAVE_CLEARSV; | |
603 | ||
f3548bdc | 604 | ASSERT_CURPAD_ACTIVE("save_clearsv"); |
623e28c6 | 605 | SvPADSTALE_off(*svp); /* mark lexical as active */ |
5d9574c1 | 606 | if (UNLIKELY((offset_shifted >> SAVE_TIGHT_SHIFT) != offset)) { |
147e3846 | 607 | Perl_croak(aTHX_ "panic: pad offset %" UVuf " out of range (%p-%p)", |
cdcdfc56 | 608 | offset, svp, PL_curpad); |
a3444cc5 | 609 | } |
cdcdfc56 | 610 | |
a3444cc5 DM |
611 | { |
612 | dSS_ADD; | |
613 | SS_ADD_UV(offset_shifted | SAVEt_CLEARSV); | |
614 | SS_ADD_END(1); | |
615 | } | |
8990e307 LW |
616 | } |
617 | ||
618 | void | |
864dbfa3 | 619 | Perl_save_delete(pTHX_ HV *hv, char *key, I32 klen) |
8990e307 | 620 | { |
7918f24d NC |
621 | PERL_ARGS_ASSERT_SAVE_DELETE; |
622 | ||
85a721ca | 623 | save_pushptri32ptr(key, klen, SvREFCNT_inc_simple(hv), SAVEt_DELETE); |
8990e307 LW |
624 | } |
625 | ||
626 | void | |
af097752 VP |
627 | Perl_save_hdelete(pTHX_ HV *hv, SV *keysv) |
628 | { | |
629 | STRLEN len; | |
630 | I32 klen; | |
631 | const char *key; | |
632 | ||
633 | PERL_ARGS_ASSERT_SAVE_HDELETE; | |
634 | ||
635 | key = SvPV_const(keysv, len); | |
636 | klen = SvUTF8(keysv) ? -(I32)len : (I32)len; | |
637 | SvREFCNT_inc_simple_void_NN(hv); | |
638 | save_pushptri32ptr(savepvn(key, len), klen, hv, SAVEt_DELETE); | |
639 | } | |
640 | ||
641 | void | |
c70927a6 | 642 | Perl_save_adelete(pTHX_ AV *av, SSize_t key) |
c68ec7a9 | 643 | { |
c70927a6 | 644 | dSS_ADD; |
c68ec7a9 VP |
645 | |
646 | PERL_ARGS_ASSERT_SAVE_ADELETE; | |
647 | ||
648 | SvREFCNT_inc_void(av); | |
c70927a6 FC |
649 | SS_ADD_UV(key); |
650 | SS_ADD_PTR(av); | |
651 | SS_ADD_IV(SAVEt_ADELETE); | |
652 | SS_ADD_END(3); | |
c68ec7a9 VP |
653 | } |
654 | ||
655 | void | |
12ab1f58 JH |
656 | Perl_save_destructor(pTHX_ DESTRUCTORFUNC_NOCONTEXT_t f, void* p) |
657 | { | |
a3444cc5 | 658 | dSS_ADD; |
7918f24d NC |
659 | PERL_ARGS_ASSERT_SAVE_DESTRUCTOR; |
660 | ||
a3444cc5 DM |
661 | SS_ADD_DPTR(f); |
662 | SS_ADD_PTR(p); | |
663 | SS_ADD_UV(SAVEt_DESTRUCTOR); | |
664 | SS_ADD_END(3); | |
12ab1f58 JH |
665 | } |
666 | ||
667 | void | |
146174a9 CB |
668 | Perl_save_destructor_x(pTHX_ DESTRUCTORFUNC_t f, void* p) |
669 | { | |
a3444cc5 DM |
670 | dSS_ADD; |
671 | ||
672 | SS_ADD_DXPTR(f); | |
673 | SS_ADD_PTR(p); | |
674 | SS_ADD_UV(SAVEt_DESTRUCTOR_X); | |
675 | SS_ADD_END(3); | |
146174a9 CB |
676 | } |
677 | ||
678 | void | |
da8315f8 NC |
679 | Perl_save_hints(pTHX) |
680 | { | |
20439bc7 | 681 | COPHH *save_cophh = cophh_copy(CopHINTHASH_get(&PL_compiling)); |
da8315f8 | 682 | if (PL_hints & HINT_LOCALIZE_HH) { |
52c7aca6 FC |
683 | HV *oldhh = GvHV(PL_hintgv); |
684 | save_pushptri32ptr(oldhh, PL_hints, save_cophh, SAVEt_HINTS); | |
685 | GvHV(PL_hintgv) = NULL; /* in case copying dies */ | |
686 | GvHV(PL_hintgv) = hv_copy_hints_hv(oldhh); | |
be84297e | 687 | } else { |
20439bc7 | 688 | save_pushi32ptr(PL_hints, save_cophh, SAVEt_HINTS); |
da8315f8 | 689 | } |
be84297e NC |
690 | } |
691 | ||
692 | static void | |
693 | S_save_pushptri32ptr(pTHX_ void *const ptr1, const I32 i, void *const ptr2, | |
694 | const int type) | |
695 | { | |
a3444cc5 DM |
696 | dSS_ADD; |
697 | SS_ADD_PTR(ptr1); | |
698 | SS_ADD_INT(i); | |
699 | SS_ADD_PTR(ptr2); | |
700 | SS_ADD_UV(type); | |
701 | SS_ADD_END(4); | |
da8315f8 NC |
702 | } |
703 | ||
704 | void | |
c70927a6 FC |
705 | Perl_save_aelem_flags(pTHX_ AV *av, SSize_t idx, SV **sptr, |
706 | const U32 flags) | |
4e4c362e | 707 | { |
20b7effb | 708 | dSS_ADD; |
bfc4de9f | 709 | SV *sv; |
7918f24d | 710 | |
91d1c79f | 711 | PERL_ARGS_ASSERT_SAVE_AELEM_FLAGS; |
7918f24d | 712 | |
0cbee0a4 | 713 | SvGETMAGIC(*sptr); |
c70927a6 FC |
714 | SS_ADD_PTR(SvREFCNT_inc_simple(av)); |
715 | SS_ADD_IV(idx); | |
716 | SS_ADD_PTR(SvREFCNT_inc(*sptr)); | |
717 | SS_ADD_UV(SAVEt_AELEM); | |
718 | SS_ADD_END(4); | |
1cdc9186 FC |
719 | /* The array needs to hold a reference count on its new element, so it |
720 | must be AvREAL. */ | |
5d9574c1 | 721 | if (UNLIKELY(!AvREAL(av) && AvREIFY(av))) |
1cdc9186 | 722 | av_reify(av); |
91d1c79f | 723 | save_scalar_at(sptr, flags); /* XXX - FIXME - see #60360 */ |
75d34a09 VP |
724 | if (flags & SAVEf_KEEPOLDELEM) |
725 | return; | |
bfc4de9f DM |
726 | sv = *sptr; |
727 | /* If we're localizing a tied array element, this new sv | |
728 | * won't actually be stored in the array - so it won't get | |
729 | * reaped when the localize ends. Ensure it gets reaped by | |
730 | * mortifying it instead. DAPM */ | |
5d9574c1 | 731 | if (UNLIKELY(SvTIED_mg((const SV *)av, PERL_MAGIC_tied))) |
bfc4de9f | 732 | sv_2mortal(sv); |
4e4c362e GS |
733 | } |
734 | ||
735 | void | |
af7df257 | 736 | Perl_save_helem_flags(pTHX_ HV *hv, SV *key, SV **sptr, const U32 flags) |
4e4c362e | 737 | { |
bfc4de9f | 738 | SV *sv; |
7918f24d | 739 | |
af7df257 | 740 | PERL_ARGS_ASSERT_SAVE_HELEM_FLAGS; |
7918f24d | 741 | |
0cbee0a4 | 742 | SvGETMAGIC(*sptr); |
a3444cc5 DM |
743 | { |
744 | dSS_ADD; | |
745 | SS_ADD_PTR(SvREFCNT_inc_simple(hv)); | |
746 | SS_ADD_PTR(newSVsv(key)); | |
747 | SS_ADD_PTR(SvREFCNT_inc(*sptr)); | |
748 | SS_ADD_UV(SAVEt_HELEM); | |
749 | SS_ADD_END(4); | |
750 | } | |
af7df257 | 751 | save_scalar_at(sptr, flags); |
75d34a09 VP |
752 | if (flags & SAVEf_KEEPOLDELEM) |
753 | return; | |
bfc4de9f DM |
754 | sv = *sptr; |
755 | /* If we're localizing a tied hash element, this new sv | |
756 | * won't actually be stored in the hash - so it won't get | |
757 | * reaped when the localize ends. Ensure it gets reaped by | |
758 | * mortifying it instead. DAPM */ | |
5d9574c1 | 759 | if (UNLIKELY(SvTIED_mg((const SV *)hv, PERL_MAGIC_tied))) |
bfc4de9f | 760 | sv_2mortal(sv); |
4e4c362e GS |
761 | } |
762 | ||
2053acbf NC |
763 | SV* |
764 | Perl_save_svref(pTHX_ SV **sptr) | |
765 | { | |
7918f24d NC |
766 | PERL_ARGS_ASSERT_SAVE_SVREF; |
767 | ||
2053acbf | 768 | SvGETMAGIC(*sptr); |
e22024d3 | 769 | save_pushptrptr(sptr, SvREFCNT_inc(*sptr), SAVEt_SVREF); |
af7df257 | 770 | return save_scalar_at(sptr, SAVEf_SETMAGIC); /* XXX - FIXME - see #60360 */ |
2053acbf NC |
771 | } |
772 | ||
2ef9a108 DM |
773 | |
774 | void | |
775 | Perl_savetmps(pTHX) | |
776 | { | |
777 | dSS_ADD; | |
778 | SS_ADD_IV(PL_tmps_floor); | |
779 | PL_tmps_floor = PL_tmps_ix; | |
780 | SS_ADD_UV(SAVEt_TMPSFLOOR); | |
781 | SS_ADD_END(2); | |
782 | } | |
783 | ||
784 | ||
455ece5e | 785 | I32 |
864dbfa3 | 786 | Perl_save_alloc(pTHX_ I32 size, I32 pad) |
455ece5e | 787 | { |
eb578fdb KW |
788 | const I32 start = pad + ((char*)&PL_savestack[PL_savestack_ix] |
789 | - (char*)PL_savestack); | |
1be36ce0 NC |
790 | const UV elems = 1 + ((size + pad - 1) / sizeof(*PL_savestack)); |
791 | const UV elems_shifted = elems << SAVE_TIGHT_SHIFT; | |
455ece5e | 792 | |
5d9574c1 | 793 | if (UNLIKELY((elems_shifted >> SAVE_TIGHT_SHIFT) != elems)) |
93a641ae | 794 | Perl_croak(aTHX_ |
147e3846 | 795 | "panic: save_alloc elems %" UVuf " out of range (%" IVdf "-%" IVdf ")", |
93a641ae | 796 | elems, (IV)size, (IV)pad); |
1be36ce0 NC |
797 | |
798 | SSGROW(elems + 1); | |
455ece5e AD |
799 | |
800 | PL_savestack_ix += elems; | |
1be36ce0 | 801 | SSPUSHUV(SAVEt_ALLOC | elems_shifted); |
455ece5e AD |
802 | return start; |
803 | } | |
804 | ||
03dba561 | 805 | |
8c036433 | 806 | static const U8 arg_counts[] = { |
9a2fefd6 DM |
807 | 0, /* SAVEt_ALLOC */ |
808 | 0, /* SAVEt_CLEARPADRANGE */ | |
809 | 0, /* SAVEt_CLEARSV */ | |
810 | 0, /* SAVEt_REGCONTEXT */ | |
811 | 1, /* SAVEt_TMPSFLOOR */ | |
812 | 1, /* SAVEt_BOOL */ | |
813 | 1, /* SAVEt_COMPILE_WARNINGS */ | |
814 | 1, /* SAVEt_COMPPAD */ | |
815 | 1, /* SAVEt_FREECOPHH */ | |
816 | 1, /* SAVEt_FREEOP */ | |
817 | 1, /* SAVEt_FREEPV */ | |
818 | 1, /* SAVEt_FREESV */ | |
819 | 1, /* SAVEt_I16 */ | |
820 | 1, /* SAVEt_I32_SMALL */ | |
821 | 1, /* SAVEt_I8 */ | |
822 | 1, /* SAVEt_INT_SMALL */ | |
823 | 1, /* SAVEt_MORTALIZESV */ | |
824 | 1, /* SAVEt_NSTAB */ | |
825 | 1, /* SAVEt_OP */ | |
826 | 1, /* SAVEt_PARSER */ | |
827 | 1, /* SAVEt_STACK_POS */ | |
828 | 1, /* SAVEt_READONLY_OFF */ | |
829 | 1, /* SAVEt_FREEPADNAME */ | |
830 | 2, /* SAVEt_AV */ | |
831 | 2, /* SAVEt_DESTRUCTOR */ | |
832 | 2, /* SAVEt_DESTRUCTOR_X */ | |
833 | 2, /* SAVEt_GENERIC_PVREF */ | |
834 | 2, /* SAVEt_GENERIC_SVREF */ | |
835 | 2, /* SAVEt_GP */ | |
836 | 2, /* SAVEt_GVSV */ | |
837 | 2, /* SAVEt_HINTS */ | |
838 | 2, /* SAVEt_HPTR */ | |
839 | 2, /* SAVEt_HV */ | |
840 | 2, /* SAVEt_I32 */ | |
841 | 2, /* SAVEt_INT */ | |
842 | 2, /* SAVEt_ITEM */ | |
843 | 2, /* SAVEt_IV */ | |
844 | 2, /* SAVEt_LONG */ | |
845 | 2, /* SAVEt_PPTR */ | |
846 | 2, /* SAVEt_SAVESWITCHSTACK */ | |
847 | 2, /* SAVEt_SHARED_PVREF */ | |
848 | 2, /* SAVEt_SPTR */ | |
849 | 2, /* SAVEt_STRLEN */ | |
850 | 2, /* SAVEt_SV */ | |
851 | 2, /* SAVEt_SVREF */ | |
852 | 2, /* SAVEt_VPTR */ | |
853 | 2, /* SAVEt_ADELETE */ | |
854 | 2, /* SAVEt_APTR */ | |
855 | 3, /* SAVEt_HELEM */ | |
856 | 3, /* SAVEt_PADSV_AND_MORTALIZE*/ | |
857 | 3, /* SAVEt_SET_SVFLAGS */ | |
858 | 3, /* SAVEt_GVSLOT */ | |
859 | 3, /* SAVEt_AELEM */ | |
860 | 3 /* SAVEt_DELETE */ | |
861 | }; | |
862 | ||
03dba561 | 863 | |
462e5cf6 | 864 | void |
864dbfa3 | 865 | Perl_leave_scope(pTHX_ I32 base) |
79072805 | 866 | { |
302c0c93 | 867 | /* Localise the effects of the TAINT_NOT inside the loop. */ |
284167a5 | 868 | bool was = TAINT_get; |
79072805 | 869 | |
5d9574c1 | 870 | if (UNLIKELY(base < -1)) |
5637ef5b | 871 | Perl_croak(aTHX_ "panic: corrupt saved stack index %ld", (long) base); |
1c98cc53 DM |
872 | DEBUG_l(Perl_deb(aTHX_ "savestack: releasing items %ld -> %ld\n", |
873 | (long)PL_savestack_ix, (long)base)); | |
3280af22 | 874 | while (PL_savestack_ix > base) { |
03dba561 DM |
875 | UV uv; |
876 | U8 type; | |
9a2fefd6 | 877 | ANY *ap; /* arg pointer */ |
c9728782 | 878 | ANY a0, a1, a2; /* up to 3 args */ |
03dba561 | 879 | |
c6ae7647 NC |
880 | TAINT_NOT; |
881 | ||
03dba561 | 882 | { |
9a2fefd6 | 883 | U8 argcount; |
03dba561 | 884 | I32 ix = PL_savestack_ix - 1; |
9a2fefd6 DM |
885 | |
886 | ap = &PL_savestack[ix]; | |
887 | uv = ap->any_uv; | |
03dba561 | 888 | type = (U8)uv & SAVE_MASK; |
9a2fefd6 DM |
889 | argcount = arg_counts[type]; |
890 | PL_savestack_ix = ix - argcount; | |
891 | ap -= argcount; | |
03dba561 DM |
892 | } |
893 | ||
c6bf6a65 | 894 | switch (type) { |
79072805 | 895 | case SAVEt_ITEM: /* normal string */ |
c9728782 DM |
896 | a0 = ap[0]; a1 = ap[1]; |
897 | sv_replace(a0.any_sv, a1.any_sv); | |
898 | if (UNLIKELY(SvSMAGICAL(a0.any_sv))) { | |
b492a59e | 899 | PL_localizing = 2; |
c9728782 | 900 | mg_set(a0.any_sv); |
b492a59e DM |
901 | PL_localizing = 0; |
902 | } | |
79072805 | 903 | break; |
03dba561 DM |
904 | |
905 | /* This would be a mathom, but Perl_save_svref() calls a static | |
906 | function, S_save_scalar_at(), so has to stay in this file. */ | |
907 | case SAVEt_SVREF: /* scalar reference */ | |
c9728782 | 908 | a0 = ap[0]; a1 = ap[1]; |
75ebea3c | 909 | a2.any_svp = a0.any_svp; |
c9728782 | 910 | a0.any_sv = NULL; /* what to refcnt_dec */ |
03dba561 DM |
911 | goto restore_sv; |
912 | ||
8aacddc1 | 913 | case SAVEt_SV: /* scalar reference */ |
c9728782 | 914 | a0 = ap[0]; a1 = ap[1]; |
75ebea3c | 915 | a2.any_svp = &GvSV(a0.any_gv); |
2053acbf | 916 | restore_sv: |
03dba561 | 917 | { |
75ebea3c DM |
918 | /* do *a2.any_svp = a1 and free a0 */ |
919 | SV * const sv = *a2.any_svp; | |
920 | *a2.any_svp = a1.any_sv; | |
2053acbf | 921 | SvREFCNT_dec(sv); |
c9728782 DM |
922 | if (UNLIKELY(SvSMAGICAL(a1.any_sv))) { |
923 | /* mg_set could die, skipping the freeing of a0 and | |
924 | * a1; Ensure that they're always freed in that case */ | |
2baebb98 | 925 | dSS_ADD; |
c9728782 | 926 | SS_ADD_PTR(a1.any_sv); |
2baebb98 | 927 | SS_ADD_UV(SAVEt_FREESV); |
c9728782 | 928 | SS_ADD_PTR(a0.any_sv); |
2baebb98 DM |
929 | SS_ADD_UV(SAVEt_FREESV); |
930 | SS_ADD_END(4); | |
b492a59e | 931 | PL_localizing = 2; |
c9728782 | 932 | mg_set(a1.any_sv); |
b492a59e | 933 | PL_localizing = 0; |
2baebb98 | 934 | break; |
b492a59e | 935 | } |
c9728782 DM |
936 | SvREFCNT_dec_NN(a1.any_sv); |
937 | SvREFCNT_dec(a0.any_sv); | |
2053acbf | 938 | break; |
03dba561 | 939 | } |
c9728782 | 940 | |
8aacddc1 | 941 | case SAVEt_GENERIC_PVREF: /* generic pv */ |
c9728782 DM |
942 | a0 = ap[0]; a1 = ap[1]; |
943 | if (*a1.any_pvp != a0.any_pv) { | |
944 | Safefree(*a1.any_pvp); | |
945 | *a1.any_pvp = a0.any_pv; | |
f4dd75d9 GS |
946 | } |
947 | break; | |
c9728782 | 948 | |
05ec9bb3 | 949 | case SAVEt_SHARED_PVREF: /* shared pv */ |
c9728782 DM |
950 | a0 = ap[0]; a1 = ap[1]; |
951 | if (*a0.any_pvp != a1.any_pv) { | |
5e54c26f | 952 | #ifdef NETWARE |
c9728782 | 953 | PerlMem_free(*a0.any_pvp); |
5e54c26f | 954 | #else |
c9728782 | 955 | PerlMemShared_free(*a0.any_pvp); |
5e54c26f | 956 | #endif |
c9728782 | 957 | *a0.any_pvp = a1.any_pv; |
05ec9bb3 NIS |
958 | } |
959 | break; | |
c9728782 | 960 | |
f83b46a0 | 961 | case SAVEt_GVSV: /* scalar slot in GV */ |
c9728782 | 962 | a0 = ap[0]; a1 = ap[1]; |
75ebea3c | 963 | a0.any_svp = &GvSV(a0.any_gv); |
f83b46a0 | 964 | goto restore_svp; |
c9728782 | 965 | |
8aacddc1 | 966 | case SAVEt_GENERIC_SVREF: /* generic sv */ |
c9728782 | 967 | a0 = ap[0]; a1 = ap[1]; |
f83b46a0 | 968 | restore_svp: |
03dba561 | 969 | { |
75ebea3c DM |
970 | /* do *a0.any_svp = a1 */ |
971 | SV * const sv = *a0.any_svp; | |
972 | *a0.any_svp = a1.any_sv; | |
f4dd75d9 | 973 | SvREFCNT_dec(sv); |
c9728782 | 974 | SvREFCNT_dec(a1.any_sv); |
b9d12d37 | 975 | break; |
03dba561 | 976 | } |
c9728782 | 977 | |
db9306af | 978 | case SAVEt_GVSLOT: /* any slot in GV */ |
03dba561 | 979 | { |
9a2fefd6 | 980 | HV * hv; |
c9728782 DM |
981 | a0 = ap[0]; a1 = ap[1]; a2 = ap[2]; |
982 | hv = GvSTASH(a0.any_gv); | |
db9306af | 983 | if (hv && HvENAME(hv) && ( |
c9728782 | 984 | (a2.any_sv && SvTYPE(a2.any_sv) == SVt_PVCV) |
75ebea3c | 985 | || (*a1.any_svp && SvTYPE(*a1.any_svp) == SVt_PVCV) |
db9306af FC |
986 | )) |
987 | { | |
75ebea3c DM |
988 | if ((char *)a1.any_svp < (char *)GvGP(a0.any_gv) |
989 | || (char *)a1.any_svp > (char *)GvGP(a0.any_gv) + sizeof(struct gp) | |
c9728782 | 990 | || GvREFCNT(a0.any_gv) > 2) /* "> 2" to ignore savestack's ref */ |
db9306af FC |
991 | PL_sub_generation++; |
992 | else mro_method_changed_in(hv); | |
993 | } | |
75ebea3c DM |
994 | a0.any_svp = a1.any_svp; |
995 | a1.any_sv = a2.any_sv; | |
db9306af | 996 | goto restore_svp; |
03dba561 | 997 | } |
c9728782 | 998 | |
8aacddc1 | 999 | case SAVEt_AV: /* array reference */ |
c9728782 DM |
1000 | a0 = ap[0]; a1 = ap[1]; |
1001 | SvREFCNT_dec(GvAV(a0.any_gv)); | |
1002 | GvAV(a0.any_gv) = a1.any_av; | |
2baebb98 | 1003 | avhv_common: |
c9728782 DM |
1004 | if (UNLIKELY(SvSMAGICAL(a1.any_sv))) { |
1005 | /* mg_set might die, so make sure a0 isn't leaked */ | |
2baebb98 | 1006 | dSS_ADD; |
c9728782 | 1007 | SS_ADD_PTR(a0.any_sv); |
2baebb98 DM |
1008 | SS_ADD_UV(SAVEt_FREESV); |
1009 | SS_ADD_END(2); | |
b492a59e | 1010 | PL_localizing = 2; |
c9728782 | 1011 | mg_set(a1.any_sv); |
b492a59e | 1012 | PL_localizing = 0; |
2baebb98 | 1013 | break; |
b492a59e | 1014 | } |
c9728782 | 1015 | SvREFCNT_dec_NN(a0.any_sv); |
8aacddc1 | 1016 | break; |
c9728782 | 1017 | |
8aacddc1 | 1018 | case SAVEt_HV: /* hash reference */ |
c9728782 DM |
1019 | a0 = ap[0]; a1 = ap[1]; |
1020 | SvREFCNT_dec(GvHV(a0.any_gv)); | |
1021 | GvHV(a0.any_gv) = a1.any_hv; | |
2baebb98 DM |
1022 | goto avhv_common; |
1023 | ||
994d373a | 1024 | case SAVEt_INT_SMALL: |
c9728782 DM |
1025 | a0 = ap[0]; |
1026 | *(int*)a0.any_ptr = (int)(uv >> SAVE_TIGHT_SHIFT); | |
994d373a | 1027 | break; |
c9728782 | 1028 | |
79072805 | 1029 | case SAVEt_INT: /* int reference */ |
c9728782 DM |
1030 | a0 = ap[0]; a1 = ap[1]; |
1031 | *(int*)a1.any_ptr = (int)a0.any_i32; | |
79072805 | 1032 | break; |
c9728782 | 1033 | |
e8eb279c | 1034 | case SAVEt_STRLEN: /* STRLEN/size_t ref */ |
c9728782 DM |
1035 | a0 = ap[0]; a1 = ap[1]; |
1036 | *(STRLEN*)a1.any_ptr = (STRLEN)a0.any_iv; | |
e8eb279c | 1037 | break; |
c9728782 | 1038 | |
2ef9a108 | 1039 | case SAVEt_TMPSFLOOR: /* restore PL_tmps_floor */ |
c9728782 DM |
1040 | a0 = ap[0]; |
1041 | PL_tmps_floor = (SSize_t)a0.any_iv; | |
2ef9a108 | 1042 | break; |
c9728782 | 1043 | |
9febdf04 | 1044 | case SAVEt_BOOL: /* bool reference */ |
c9728782 DM |
1045 | a0 = ap[0]; |
1046 | *(bool*)a0.any_ptr = cBOOL(uv >> 8); | |
9a9b5ec9 DM |
1047 | #ifdef NO_TAINT_SUPPORT |
1048 | PERL_UNUSED_VAR(was); | |
1049 | #else | |
c9728782 | 1050 | if (UNLIKELY(a0.any_ptr == &(TAINT_get))) { |
b6f93e7a KW |
1051 | /* If we don't update <was>, to reflect what was saved on the |
1052 | * stack for PL_tainted, then we will overwrite this attempt to | |
1053 | * restore it when we exit this routine. Note that this won't | |
1054 | * work if this value was saved in a wider-than necessary type, | |
1055 | * such as I32 */ | |
c9728782 | 1056 | was = *(bool*)a0.any_ptr; |
b6f93e7a | 1057 | } |
284167a5 | 1058 | #endif |
9febdf04 | 1059 | break; |
c9728782 | 1060 | |
89abef21 | 1061 | case SAVEt_I32_SMALL: |
c9728782 DM |
1062 | a0 = ap[0]; |
1063 | *(I32*)a0.any_ptr = (I32)(uv >> SAVE_TIGHT_SHIFT); | |
89abef21 | 1064 | break; |
c9728782 | 1065 | |
79072805 | 1066 | case SAVEt_I32: /* I32 reference */ |
c9728782 | 1067 | a0 = ap[0]; a1 = ap[1]; |
3235b7a3 | 1068 | #ifdef PERL_DEBUG_READONLY_OPS |
c9728782 | 1069 | if (*(I32*)a1.any_ptr != a0.any_i32) |
3235b7a3 | 1070 | #endif |
c9728782 | 1071 | *(I32*)a1.any_ptr = a0.any_i32; |
79072805 | 1072 | break; |
c9728782 | 1073 | |
79072805 | 1074 | case SAVEt_SPTR: /* SV* reference */ |
146174a9 | 1075 | case SAVEt_VPTR: /* random* reference */ |
85e6fe83 | 1076 | case SAVEt_PPTR: /* char* reference */ |
79072805 | 1077 | case SAVEt_HPTR: /* HV* reference */ |
79072805 | 1078 | case SAVEt_APTR: /* AV* reference */ |
c9728782 | 1079 | a0 = ap[0]; a1 = ap[1]; |
212a001e | 1080 | *a1.any_svp= a0.any_sv; |
79072805 | 1081 | break; |
c9728782 | 1082 | |
fb73857a | 1083 | case SAVEt_GP: /* scalar reference */ |
03dba561 DM |
1084 | { |
1085 | HV *hv; | |
9a2fefd6 DM |
1086 | bool had_method; |
1087 | ||
c9728782 | 1088 | a0 = ap[0]; a1 = ap[1]; |
03dba561 | 1089 | /* possibly taking a method out of circulation */ |
c9728782 DM |
1090 | had_method = !!GvCVu(a0.any_gv); |
1091 | gp_free(a0.any_gv); | |
1092 | GvGP_set(a0.any_gv, (GP*)a1.any_ptr); | |
1093 | if ((hv=GvSTASH(a0.any_gv)) && HvENAME_get(hv)) { | |
b59bf0b2 | 1094 | if (memEQs(GvNAME(a0.any_gv), GvNAMELEN(a0.any_gv), "ISA")) |
03dba561 | 1095 | mro_isa_changed_in(hv); |
c9728782 | 1096 | else if (had_method || GvCVu(a0.any_gv)) |
03dba561 | 1097 | /* putting a method back into circulation ("local")*/ |
c9728782 | 1098 | gv_method_changed(a0.any_gv); |
3d460042 | 1099 | } |
c9728782 | 1100 | SvREFCNT_dec_NN(a0.any_gv); |
8aacddc1 | 1101 | break; |
03dba561 | 1102 | } |
c9728782 | 1103 | |
8990e307 | 1104 | case SAVEt_FREESV: |
c9728782 DM |
1105 | a0 = ap[0]; |
1106 | SvREFCNT_dec(a0.any_sv); | |
8990e307 | 1107 | break; |
c9728782 | 1108 | |
0f94cb1f | 1109 | case SAVEt_FREEPADNAME: |
c9728782 DM |
1110 | a0 = ap[0]; |
1111 | PadnameREFCNT_dec((PADNAME *)a0.any_ptr); | |
0f94cb1f | 1112 | break; |
c9728782 | 1113 | |
3987a177 | 1114 | case SAVEt_FREECOPHH: |
c9728782 DM |
1115 | a0 = ap[0]; |
1116 | cophh_free((COPHH *)a0.any_ptr); | |
3987a177 | 1117 | break; |
c9728782 | 1118 | |
26d9b02f | 1119 | case SAVEt_MORTALIZESV: |
c9728782 DM |
1120 | a0 = ap[0]; |
1121 | sv_2mortal(a0.any_sv); | |
26d9b02f | 1122 | break; |
c9728782 | 1123 | |
8990e307 | 1124 | case SAVEt_FREEOP: |
c9728782 | 1125 | a0 = ap[0]; |
5e5ba94b | 1126 | ASSERT_CURPAD_LEGAL("SAVEt_FREEOP"); |
6ffb8402 | 1127 | op_free(a0.any_op); |
8990e307 | 1128 | break; |
c9728782 | 1129 | |
8990e307 | 1130 | case SAVEt_FREEPV: |
c9728782 DM |
1131 | a0 = ap[0]; |
1132 | Safefree(a0.any_ptr); | |
8990e307 | 1133 | break; |
4e09461c | 1134 | |
4e09461c | 1135 | case SAVEt_CLEARPADRANGE: |
75ebea3c | 1136 | { |
bdb0ae96 FC |
1137 | I32 i; |
1138 | SV **svp; | |
1139 | i = (I32)((uv >> SAVE_TIGHT_SHIFT) & OPpPADRANGE_COUNTMASK); | |
1140 | svp = &PL_curpad[uv >> | |
4e09461c DM |
1141 | (OPpPADRANGE_COUNTSHIFT + SAVE_TIGHT_SHIFT)] + i - 1; |
1142 | goto clearsv; | |
8990e307 | 1143 | case SAVEt_CLEARSV: |
4e09461c DM |
1144 | svp = &PL_curpad[uv >> SAVE_TIGHT_SHIFT]; |
1145 | i = 1; | |
1146 | clearsv: | |
1147 | for (; i; i--, svp--) { | |
9a2fefd6 | 1148 | SV *sv = *svp; |
528ad060 DM |
1149 | |
1150 | DEBUG_Xv(PerlIO_printf(Perl_debug_log, | |
147e3846 | 1151 | "Pad 0x%" UVxf "[0x%" UVxf "] clearsv: %ld sv=0x%" UVxf "<%" IVdf "> %s\n", |
528ad060 DM |
1152 | PTR2UV(PL_comppad), PTR2UV(PL_curpad), |
1153 | (long)(svp-PL_curpad), PTR2UV(sv), (IV)SvREFCNT(sv), | |
1154 | (SvREFCNT(sv) <= 1 && !SvOBJECT(sv)) ? "clear" : "abandon" | |
1155 | )); | |
1156 | ||
1157 | /* Can clear pad variable in place? */ | |
9af15990 | 1158 | if (SvREFCNT(sv) == 1 && !SvOBJECT(sv)) { |
a07f0bef | 1159 | |
a07f0bef DM |
1160 | /* these flags are the union of all the relevant flags |
1161 | * in the individual conditions within */ | |
1162 | if (UNLIKELY(SvFLAGS(sv) & ( | |
a623f893 | 1163 | SVf_READONLY|SVf_PROTECT /*for SvREADONLY_off*/ |
a07f0bef | 1164 | | (SVs_GMG|SVs_SMG|SVs_RMG) /* SvMAGICAL() */ |
7532eaae | 1165 | | SVf_OOK |
a07f0bef DM |
1166 | | SVf_THINKFIRST))) |
1167 | { | |
7500fc82 DM |
1168 | /* if a my variable that was made readonly is |
1169 | * going out of scope, we want to remove the | |
1170 | * readonlyness so that it can go out of scope | |
1171 | * quietly | |
1172 | */ | |
57c404c9 | 1173 | if (SvREADONLY(sv)) |
7500fc82 DM |
1174 | SvREADONLY_off(sv); |
1175 | ||
7532eaae DM |
1176 | if (SvOOK(sv)) { /* OOK or HvAUX */ |
1177 | if (SvTYPE(sv) == SVt_PVHV) | |
1178 | Perl_hv_kill_backrefs(aTHX_ MUTABLE_HV(sv)); | |
1179 | else | |
1180 | sv_backoff(sv); | |
1181 | } | |
1182 | ||
7500fc82 | 1183 | if (SvMAGICAL(sv)) { |
7532eaae DM |
1184 | /* note that backrefs (either in HvAUX or magic) |
1185 | * must be removed before other magic */ | |
7500fc82 DM |
1186 | sv_unmagic(sv, PERL_MAGIC_backref); |
1187 | if (SvTYPE(sv) != SVt_PVCV) | |
1188 | mg_free(sv); | |
1189 | } | |
1190 | if (SvTHINKFIRST(sv)) | |
1191 | sv_force_normal_flags(sv, SV_IMMEDIATE_UNREF | |
1192 | |SV_COW_DROP_PV); | |
528ad060 | 1193 | |
a07f0bef | 1194 | } |
528ad060 DM |
1195 | switch (SvTYPE(sv)) { |
1196 | case SVt_NULL: | |
1197 | break; | |
1198 | case SVt_PVAV: | |
1199 | av_clear(MUTABLE_AV(sv)); | |
1200 | break; | |
1201 | case SVt_PVHV: | |
1202 | hv_clear(MUTABLE_HV(sv)); | |
1203 | break; | |
1204 | case SVt_PVCV: | |
1205 | { | |
79656330 | 1206 | HEK *hek = CvGvNAME_HEK(sv); |
528ad060 | 1207 | assert(hek); |
6110d17a | 1208 | (void)share_hek_hek(hek); |
528ad060 DM |
1209 | cv_undef((CV *)sv); |
1210 | CvNAME_HEK_set(sv, hek); | |
f3feca7a | 1211 | CvLEXICAL_on(sv); |
528ad060 DM |
1212 | break; |
1213 | } | |
1214 | default: | |
c79d0076 NC |
1215 | /* This looks odd, but these two macros are for use in |
1216 | expressions and finish with a trailing comma, so | |
1217 | adding a ; after them would be wrong. */ | |
1218 | assert_not_ROK(sv) | |
1219 | assert_not_glob(sv) | |
5c85b638 | 1220 | SvFLAGS(sv) &=~ (SVf_OK|SVf_IVisUV|SVf_UTF8); |
528ad060 DM |
1221 | break; |
1222 | } | |
82e85a9c | 1223 | SvPADTMP_off(sv); |
528ad060 DM |
1224 | SvPADSTALE_on(sv); /* mark as no longer live */ |
1225 | } | |
1226 | else { /* Someone has a claim on this, so abandon it. */ | |
528ad060 DM |
1227 | switch (SvTYPE(sv)) { /* Console ourselves with a new value */ |
1228 | case SVt_PVAV: *svp = MUTABLE_SV(newAV()); break; | |
1229 | case SVt_PVHV: *svp = MUTABLE_SV(newHV()); break; | |
1230 | case SVt_PVCV: | |
1231 | { | |
79656330 | 1232 | HEK * const hek = CvGvNAME_HEK(sv); |
9c98a81f | 1233 | |
528ad060 DM |
1234 | /* Create a stub */ |
1235 | *svp = newSV_type(SVt_PVCV); | |
1236 | ||
1237 | /* Share name */ | |
528ad060 | 1238 | CvNAME_HEK_set(*svp, |
9c98a81f | 1239 | share_hek_hek(hek)); |
f3feca7a | 1240 | CvLEXICAL_on(*svp); |
528ad060 DM |
1241 | break; |
1242 | } | |
1243 | default: *svp = newSV(0); break; | |
1244 | } | |
4a9a56a7 | 1245 | SvREFCNT_dec_NN(sv); /* Cast current value to the winds. */ |
528ad060 DM |
1246 | /* preserve pad nature, but also mark as not live |
1247 | * for any closure capturing */ | |
145bf8ee | 1248 | SvFLAGS(*svp) |= SVs_PADSTALE; |
528ad060 | 1249 | } |
4e09461c | 1250 | } |
8990e307 | 1251 | break; |
75ebea3c | 1252 | } |
c9728782 | 1253 | |
8990e307 | 1254 | case SAVEt_DELETE: |
c9728782 DM |
1255 | a0 = ap[0]; a1 = ap[1]; a2 = ap[2]; |
1256 | (void)hv_delete(a2.any_hv, a0.any_pv, a1.any_i32, G_DISCARD); | |
1257 | SvREFCNT_dec(a2.any_hv); | |
1258 | Safefree(a0.any_ptr); | |
8990e307 | 1259 | break; |
c9728782 | 1260 | |
c68ec7a9 | 1261 | case SAVEt_ADELETE: |
c9728782 DM |
1262 | a0 = ap[0]; a1 = ap[1]; |
1263 | (void)av_delete(a1.any_av, a0.any_iv, G_DISCARD); | |
1264 | SvREFCNT_dec(a1.any_av); | |
c68ec7a9 | 1265 | break; |
c9728782 | 1266 | |
146174a9 | 1267 | case SAVEt_DESTRUCTOR_X: |
c9728782 DM |
1268 | a0 = ap[0]; a1 = ap[1]; |
1269 | (*a0.any_dxptr)(aTHX_ a1.any_ptr); | |
a0d0e21e | 1270 | break; |
c9728782 | 1271 | |
a0d0e21e | 1272 | case SAVEt_REGCONTEXT: |
e0fa7e2b | 1273 | /* regexp must have croaked */ |
455ece5e | 1274 | case SAVEt_ALLOC: |
1be36ce0 | 1275 | PL_savestack_ix -= uv >> SAVE_TIGHT_SHIFT; |
a0d0e21e | 1276 | break; |
c9728782 | 1277 | |
55497cff | 1278 | case SAVEt_STACK_POS: /* Position on Perl stack */ |
c9728782 DM |
1279 | a0 = ap[0]; |
1280 | PL_stack_sp = PL_stack_base + a0.any_i32; | |
55497cff | 1281 | break; |
c9728782 | 1282 | |
161b7d16 | 1283 | case SAVEt_AELEM: /* array element */ |
75ebea3c DM |
1284 | { |
1285 | SV **svp; | |
c9728782 DM |
1286 | a0 = ap[0]; a1 = ap[1]; a2 = ap[2]; |
1287 | svp = av_fetch(a0.any_av, a1.any_iv, 1); | |
1288 | if (UNLIKELY(!AvREAL(a0.any_av) && AvREIFY(a0.any_av))) /* undo reify guard */ | |
1289 | SvREFCNT_dec(a2.any_sv); | |
5d9574c1 | 1290 | if (LIKELY(svp)) { |
03dba561 | 1291 | SV * const sv = *svp; |
5d9574c1 | 1292 | if (LIKELY(sv && sv != &PL_sv_undef)) { |
c9728782 | 1293 | if (UNLIKELY(SvTIED_mg((const SV *)a0.any_av, PERL_MAGIC_tied))) |
b37c2d43 | 1294 | SvREFCNT_inc_void_NN(sv); |
75ebea3c DM |
1295 | a1.any_sv = a2.any_sv; |
1296 | a2.any_svp = svp; | |
4e4c362e GS |
1297 | goto restore_sv; |
1298 | } | |
1299 | } | |
c9728782 DM |
1300 | SvREFCNT_dec(a0.any_av); |
1301 | SvREFCNT_dec(a2.any_sv); | |
4e4c362e | 1302 | break; |
75ebea3c | 1303 | } |
c9728782 | 1304 | |
161b7d16 | 1305 | case SAVEt_HELEM: /* hash element */ |
03dba561 | 1306 | { |
9a2fefd6 DM |
1307 | HE *he; |
1308 | ||
c9728782 DM |
1309 | a0 = ap[0]; a1 = ap[1]; a2 = ap[2]; |
1310 | he = hv_fetch_ent(a0.any_hv, a1.any_sv, 1, 0); | |
1311 | SvREFCNT_dec(a1.any_sv); | |
5d9574c1 | 1312 | if (LIKELY(he)) { |
03dba561 | 1313 | const SV * const oval = HeVAL(he); |
5d9574c1 | 1314 | if (LIKELY(oval && oval != &PL_sv_undef)) { |
75ebea3c | 1315 | SV **svp = &HeVAL(he); |
c9728782 | 1316 | if (UNLIKELY(SvTIED_mg((const SV *)a0.any_hv, PERL_MAGIC_tied))) |
03dba561 | 1317 | SvREFCNT_inc_void(*svp); |
75ebea3c DM |
1318 | a1.any_sv = a2.any_sv; |
1319 | a2.any_svp = svp; | |
4e4c362e GS |
1320 | goto restore_sv; |
1321 | } | |
1322 | } | |
c9728782 DM |
1323 | SvREFCNT_dec(a0.any_hv); |
1324 | SvREFCNT_dec(a2.any_sv); | |
4e4c362e | 1325 | break; |
03dba561 | 1326 | } |
75ebea3c | 1327 | |
462e5cf6 | 1328 | case SAVEt_OP: |
c9728782 DM |
1329 | a0 = ap[0]; |
1330 | PL_op = (OP*)a0.any_ptr; | |
462e5cf6 | 1331 | break; |
c9728782 | 1332 | |
25eaa213 | 1333 | case SAVEt_HINTS: |
c9728782 | 1334 | a0 = ap[0]; a1 = ap[1]; |
3607ca02 FC |
1335 | if ((PL_hints & HINT_LOCALIZE_HH)) { |
1336 | while (GvHV(PL_hintgv)) { | |
2653c1e3 | 1337 | HV *hv = GvHV(PL_hintgv); |
045ac317 | 1338 | GvHV(PL_hintgv) = NULL; |
2653c1e3 | 1339 | SvREFCNT_dec(MUTABLE_SV(hv)); |
3607ca02 | 1340 | } |
045ac317 | 1341 | } |
20439bc7 | 1342 | cophh_free(CopHINTHASH_get(&PL_compiling)); |
c9728782 DM |
1343 | CopHINTHASH_set(&PL_compiling, (COPHH*)a1.any_ptr); |
1344 | *(I32*)&PL_hints = a0.any_i32; | |
dfa41748 | 1345 | if (PL_hints & HINT_LOCALIZE_HH) { |
ad64d0ec | 1346 | SvREFCNT_dec(MUTABLE_SV(GvHV(PL_hintgv))); |
85fbaab2 | 1347 | GvHV(PL_hintgv) = MUTABLE_HV(SSPOPPTR); |
2653c1e3 DM |
1348 | } |
1349 | if (!GvHV(PL_hintgv)) { | |
a3fb8386 FC |
1350 | /* Need to add a new one manually, else rv2hv can |
1351 | add one via GvHVn and it won't have the magic set. */ | |
5b9c0671 NC |
1352 | HV *const hv = newHV(); |
1353 | hv_magic(hv, NULL, PERL_MAGIC_hints); | |
1354 | GvHV(PL_hintgv) = hv; | |
dfa41748 | 1355 | } |
5b9c0671 | 1356 | assert(GvHV(PL_hintgv)); |
b3ac6de7 | 1357 | break; |
c9728782 | 1358 | |
cb50131a | 1359 | case SAVEt_COMPPAD: |
c9728782 DM |
1360 | a0 = ap[0]; |
1361 | PL_comppad = (PAD*)a0.any_ptr; | |
5d9574c1 | 1362 | if (LIKELY(PL_comppad)) |
cb50131a CB |
1363 | PL_curpad = AvARRAY(PL_comppad); |
1364 | else | |
4608196e | 1365 | PL_curpad = NULL; |
cb50131a | 1366 | break; |
c9728782 | 1367 | |
09edbca0 | 1368 | case SAVEt_PADSV_AND_MORTALIZE: |
c3564e5c | 1369 | { |
09edbca0 | 1370 | SV **svp; |
9a2fefd6 | 1371 | |
c9728782 DM |
1372 | a0 = ap[0]; a1 = ap[1]; a2 = ap[2]; |
1373 | assert (a1.any_ptr); | |
1374 | svp = AvARRAY((PAD*)a1.any_ptr) + (PADOFFSET)a2.any_uv; | |
b405d38b DM |
1375 | /* This mortalizing used to be done by CX_POOPLOOP() via |
1376 | itersave. But as we have all the information here, we | |
1377 | can do it here, save even having to have itersave in | |
1378 | the struct. | |
1379 | */ | |
09edbca0 | 1380 | sv_2mortal(*svp); |
c9728782 | 1381 | *svp = a0.any_sv; |
c3564e5c GS |
1382 | } |
1383 | break; | |
c9728782 | 1384 | |
8b7059b1 DM |
1385 | case SAVEt_SAVESWITCHSTACK: |
1386 | { | |
1387 | dSP; | |
9a2fefd6 | 1388 | |
c9728782 DM |
1389 | a0 = ap[0]; a1 = ap[1]; |
1390 | SWITCHSTACK(a1.any_av, a0.any_av); | |
1391 | PL_curstackinfo->si_stack = a0.any_av; | |
8b7059b1 DM |
1392 | } |
1393 | break; | |
c9728782 | 1394 | |
14f338dc | 1395 | case SAVEt_SET_SVFLAGS: |
c9728782 DM |
1396 | a0 = ap[0]; a1 = ap[1]; a2 = ap[2]; |
1397 | SvFLAGS(a0.any_sv) &= ~(a1.any_u32); | |
1398 | SvFLAGS(a0.any_sv) |= a2.any_u32; | |
14f338dc | 1399 | break; |
95e06916 | 1400 | |
95e06916 NC |
1401 | /* These are only saved in mathoms.c */ |
1402 | case SAVEt_NSTAB: | |
c9728782 DM |
1403 | a0 = ap[0]; |
1404 | (void)sv_clear(a0.any_sv); | |
95e06916 | 1405 | break; |
c9728782 | 1406 | |
2053acbf | 1407 | case SAVEt_LONG: /* long reference */ |
c9728782 DM |
1408 | a0 = ap[0]; a1 = ap[1]; |
1409 | *(long*)a1.any_ptr = a0.any_long; | |
2053acbf | 1410 | break; |
c9728782 | 1411 | |
95e06916 | 1412 | case SAVEt_IV: /* IV reference */ |
c9728782 DM |
1413 | a0 = ap[0]; a1 = ap[1]; |
1414 | *(IV*)a1.any_ptr = a0.any_iv; | |
95e06916 NC |
1415 | break; |
1416 | ||
2053acbf | 1417 | case SAVEt_I16: /* I16 reference */ |
c9728782 DM |
1418 | a0 = ap[0]; |
1419 | *(I16*)a0.any_ptr = (I16)(uv >> 8); | |
2053acbf | 1420 | break; |
c9728782 | 1421 | |
2053acbf | 1422 | case SAVEt_I8: /* I8 reference */ |
c9728782 DM |
1423 | a0 = ap[0]; |
1424 | *(I8*)a0.any_ptr = (I8)(uv >> 8); | |
2053acbf | 1425 | break; |
c9728782 | 1426 | |
2053acbf | 1427 | case SAVEt_DESTRUCTOR: |
c9728782 DM |
1428 | a0 = ap[0]; a1 = ap[1]; |
1429 | (*a0.any_dptr)(a1.any_ptr); | |
2053acbf | 1430 | break; |
c9728782 | 1431 | |
68da3b2f | 1432 | case SAVEt_COMPILE_WARNINGS: |
c9728782 | 1433 | a0 = ap[0]; |
68da3b2f NC |
1434 | if (!specialWARN(PL_compiling.cop_warnings)) |
1435 | PerlMemShared_free(PL_compiling.cop_warnings); | |
c9728782 | 1436 | PL_compiling.cop_warnings = (STRLEN*)a0.any_ptr; |
72dc9ed5 | 1437 | break; |
c9728782 | 1438 | |
7c197c94 | 1439 | case SAVEt_PARSER: |
c9728782 DM |
1440 | a0 = ap[0]; |
1441 | parser_free((yy_parser *)a0.any_ptr); | |
7c197c94 | 1442 | break; |
c9728782 | 1443 | |
20d5dc23 | 1444 | case SAVEt_READONLY_OFF: |
c9728782 DM |
1445 | a0 = ap[0]; |
1446 | SvREADONLY_off(a0.any_sv); | |
20d5dc23 | 1447 | break; |
c9728782 | 1448 | |
79072805 | 1449 | default: |
75ebea3c DM |
1450 | Perl_croak(aTHX_ "panic: leave_scope inconsistency %u", |
1451 | (U8)uv & SAVE_MASK); | |
79072805 LW |
1452 | } |
1453 | } | |
302c0c93 | 1454 | |
284167a5 | 1455 | TAINT_set(was); |
79072805 | 1456 | } |
8990e307 | 1457 | |
8990e307 | 1458 | void |
864dbfa3 | 1459 | Perl_cx_dump(pTHX_ PERL_CONTEXT *cx) |
8990e307 | 1460 | { |
7918f24d NC |
1461 | PERL_ARGS_ASSERT_CX_DUMP; |
1462 | ||
35ff7856 | 1463 | #ifdef DEBUGGING |
22c35a8c | 1464 | PerlIO_printf(Perl_debug_log, "CX %ld = %s\n", (long)(cx - cxstack), PL_block_type[CxTYPE(cx)]); |
6b35e009 | 1465 | if (CxTYPE(cx) != CXt_SUBST) { |
e8d9e9d0 | 1466 | const char *gimme_text; |
760ac839 | 1467 | PerlIO_printf(Perl_debug_log, "BLK_OLDSP = %ld\n", (long)cx->blk_oldsp); |
147e3846 | 1468 | PerlIO_printf(Perl_debug_log, "BLK_OLDCOP = 0x%" UVxf "\n", |
146174a9 | 1469 | PTR2UV(cx->blk_oldcop)); |
760ac839 LW |
1470 | PerlIO_printf(Perl_debug_log, "BLK_OLDMARKSP = %ld\n", (long)cx->blk_oldmarksp); |
1471 | PerlIO_printf(Perl_debug_log, "BLK_OLDSCOPESP = %ld\n", (long)cx->blk_oldscopesp); | |
e992140c | 1472 | PerlIO_printf(Perl_debug_log, "BLK_OLDSAVEIX = %ld\n", (long)cx->blk_oldsaveix); |
147e3846 | 1473 | PerlIO_printf(Perl_debug_log, "BLK_OLDPM = 0x%" UVxf "\n", |
146174a9 | 1474 | PTR2UV(cx->blk_oldpm)); |
e8d9e9d0 VP |
1475 | switch (cx->blk_gimme) { |
1476 | case G_VOID: | |
1477 | gimme_text = "VOID"; | |
1478 | break; | |
1479 | case G_SCALAR: | |
1480 | gimme_text = "SCALAR"; | |
1481 | break; | |
1482 | case G_ARRAY: | |
1483 | gimme_text = "LIST"; | |
1484 | break; | |
1485 | default: | |
1486 | gimme_text = "UNKNOWN"; | |
1487 | break; | |
1488 | } | |
1489 | PerlIO_printf(Perl_debug_log, "BLK_GIMME = %s\n", gimme_text); | |
8990e307 | 1490 | } |
6b35e009 | 1491 | switch (CxTYPE(cx)) { |
8990e307 LW |
1492 | case CXt_NULL: |
1493 | case CXt_BLOCK: | |
1494 | break; | |
146174a9 | 1495 | case CXt_FORMAT: |
147e3846 | 1496 | PerlIO_printf(Perl_debug_log, "BLK_FORMAT.CV = 0x%" UVxf "\n", |
f9c764c5 | 1497 | PTR2UV(cx->blk_format.cv)); |
147e3846 | 1498 | PerlIO_printf(Perl_debug_log, "BLK_FORMAT.GV = 0x%" UVxf "\n", |
f9c764c5 | 1499 | PTR2UV(cx->blk_format.gv)); |
147e3846 | 1500 | PerlIO_printf(Perl_debug_log, "BLK_FORMAT.DFOUTGV = 0x%" UVxf "\n", |
f9c764c5 NC |
1501 | PTR2UV(cx->blk_format.dfoutgv)); |
1502 | PerlIO_printf(Perl_debug_log, "BLK_FORMAT.HASARGS = %d\n", | |
bafb2adc | 1503 | (int)CxHASARGS(cx)); |
147e3846 | 1504 | PerlIO_printf(Perl_debug_log, "BLK_FORMAT.RETOP = 0x%" UVxf "\n", |
f9c764c5 | 1505 | PTR2UV(cx->blk_format.retop)); |
146174a9 | 1506 | break; |
8990e307 | 1507 | case CXt_SUB: |
147e3846 | 1508 | PerlIO_printf(Perl_debug_log, "BLK_SUB.CV = 0x%" UVxf "\n", |
146174a9 | 1509 | PTR2UV(cx->blk_sub.cv)); |
760ac839 | 1510 | PerlIO_printf(Perl_debug_log, "BLK_SUB.OLDDEPTH = %ld\n", |
8990e307 | 1511 | (long)cx->blk_sub.olddepth); |
760ac839 | 1512 | PerlIO_printf(Perl_debug_log, "BLK_SUB.HASARGS = %d\n", |
bafb2adc NC |
1513 | (int)CxHASARGS(cx)); |
1514 | PerlIO_printf(Perl_debug_log, "BLK_SUB.LVAL = %d\n", (int)CxLVAL(cx)); | |
147e3846 | 1515 | PerlIO_printf(Perl_debug_log, "BLK_SUB.RETOP = 0x%" UVxf "\n", |
f39bc417 | 1516 | PTR2UV(cx->blk_sub.retop)); |
8990e307 LW |
1517 | break; |
1518 | case CXt_EVAL: | |
760ac839 | 1519 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_IN_EVAL = %ld\n", |
85a64632 | 1520 | (long)CxOLD_IN_EVAL(cx)); |
760ac839 | 1521 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_OP_TYPE = %s (%s)\n", |
85a64632 NC |
1522 | PL_op_name[CxOLD_OP_TYPE(cx)], |
1523 | PL_op_desc[CxOLD_OP_TYPE(cx)]); | |
0f79a09d GS |
1524 | if (cx->blk_eval.old_namesv) |
1525 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_NAME = %s\n", | |
aa07b2f6 | 1526 | SvPVX_const(cx->blk_eval.old_namesv)); |
147e3846 | 1527 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.OLD_EVAL_ROOT = 0x%" UVxf "\n", |
146174a9 | 1528 | PTR2UV(cx->blk_eval.old_eval_root)); |
147e3846 | 1529 | PerlIO_printf(Perl_debug_log, "BLK_EVAL.RETOP = 0x%" UVxf "\n", |
f39bc417 | 1530 | PTR2UV(cx->blk_eval.retop)); |
8990e307 LW |
1531 | break; |
1532 | ||
93661e56 | 1533 | case CXt_LOOP_PLAIN: |
c6fdafd0 | 1534 | case CXt_LOOP_LAZYIV: |
d01136d6 | 1535 | case CXt_LOOP_LAZYSV: |
93661e56 DM |
1536 | case CXt_LOOP_LIST: |
1537 | case CXt_LOOP_ARY: | |
0cbdab38 | 1538 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.LABEL = %s\n", CxLABEL(cx)); |
147e3846 | 1539 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.MY_OP = 0x%" UVxf "\n", |
022eaa24 | 1540 | PTR2UV(cx->blk_loop.my_op)); |
0925dc7f | 1541 | if (CxTYPE(cx) != CXt_LOOP_PLAIN) { |
147e3846 | 1542 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERVAR = 0x%" UVxf "\n", |
0925dc7f | 1543 | PTR2UV(CxITERVAR(cx))); |
147e3846 | 1544 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERSAVE = 0x%" UVxf "\n", |
0925dc7f | 1545 | PTR2UV(cx->blk_loop.itersave)); |
619bbb9a Z |
1546 | } |
1547 | if (CxTYPE(cx) == CXt_LOOP_ARY) { | |
147e3846 | 1548 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERARY = 0x%" UVxf "\n", |
0925dc7f DM |
1549 | PTR2UV(cx->blk_loop.state_u.ary.ary)); |
1550 | PerlIO_printf(Perl_debug_log, "BLK_LOOP.ITERIX = %ld\n", | |
1551 | (long)cx->blk_loop.state_u.ary.ix); | |
1552 | } | |
8990e307 LW |
1553 | break; |
1554 | ||
1555 | case CXt_SUBST: | |
760ac839 | 1556 | PerlIO_printf(Perl_debug_log, "SB_ITERS = %ld\n", |
8990e307 | 1557 | (long)cx->sb_iters); |
760ac839 | 1558 | PerlIO_printf(Perl_debug_log, "SB_MAXITERS = %ld\n", |
8990e307 | 1559 | (long)cx->sb_maxiters); |
35ef4773 GS |
1560 | PerlIO_printf(Perl_debug_log, "SB_RFLAGS = %ld\n", |
1561 | (long)cx->sb_rflags); | |
760ac839 | 1562 | PerlIO_printf(Perl_debug_log, "SB_ONCE = %ld\n", |
c5bed6a7 | 1563 | (long)CxONCE(cx)); |
760ac839 | 1564 | PerlIO_printf(Perl_debug_log, "SB_ORIG = %s\n", |
8990e307 | 1565 | cx->sb_orig); |
147e3846 | 1566 | PerlIO_printf(Perl_debug_log, "SB_DSTR = 0x%" UVxf "\n", |
146174a9 | 1567 | PTR2UV(cx->sb_dstr)); |
147e3846 | 1568 | PerlIO_printf(Perl_debug_log, "SB_TARG = 0x%" UVxf "\n", |
146174a9 | 1569 | PTR2UV(cx->sb_targ)); |
147e3846 | 1570 | PerlIO_printf(Perl_debug_log, "SB_S = 0x%" UVxf "\n", |
146174a9 | 1571 | PTR2UV(cx->sb_s)); |
147e3846 | 1572 | PerlIO_printf(Perl_debug_log, "SB_M = 0x%" UVxf "\n", |
146174a9 | 1573 | PTR2UV(cx->sb_m)); |
147e3846 | 1574 | PerlIO_printf(Perl_debug_log, "SB_STREND = 0x%" UVxf "\n", |
146174a9 | 1575 | PTR2UV(cx->sb_strend)); |
147e3846 | 1576 | PerlIO_printf(Perl_debug_log, "SB_RXRES = 0x%" UVxf "\n", |
146174a9 | 1577 | PTR2UV(cx->sb_rxres)); |
8990e307 LW |
1578 | break; |
1579 | } | |
65e66c80 | 1580 | #else |
96a5add6 | 1581 | PERL_UNUSED_CONTEXT; |
65e66c80 | 1582 | PERL_UNUSED_ARG(cx); |
17c3b450 | 1583 | #endif /* DEBUGGING */ |
35ff7856 | 1584 | } |
241d1a3b NC |
1585 | |
1586 | /* | |
14d04a33 | 1587 | * ex: set ts=8 sts=4 sw=4 et: |
37442d52 | 1588 | */ |