Mercurial > hg > CbC > CbC_gcc
annotate libcpp/pch.c @ 158:494b0b89df80 default tip
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| author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Mon, 25 May 2020 18:13:55 +0900 |
| parents | 1830386684a0 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* Part of CPP library. (Precompiled header reading/writing.) |
| 145 | 2 Copyright (C) 2000-2020 Free Software Foundation, Inc. |
| 0 | 3 |
| 4 This program is free software; you can redistribute it and/or modify it | |
| 5 under the terms of the GNU General Public License as published by the | |
| 6 Free Software Foundation; either version 3, or (at your option) any | |
| 7 later version. | |
| 8 | |
| 9 This program is distributed in the hope that it will be useful, | |
| 10 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 12 GNU General Public License for more details. | |
| 13 | |
| 14 You should have received a copy of the GNU General Public License | |
| 15 along with this program; see the file COPYING3. If not see | |
| 16 <http://www.gnu.org/licenses/>. */ | |
| 17 | |
| 18 #include "config.h" | |
| 19 #include "system.h" | |
| 20 #include "cpplib.h" | |
| 21 #include "internal.h" | |
| 22 #include "hashtab.h" | |
| 23 #include "mkdeps.h" | |
| 24 | |
| 25 static int write_macdef (cpp_reader *, cpp_hashnode *, void *); | |
| 26 static int save_idents (cpp_reader *, cpp_hashnode *, void *); | |
| 27 static hashval_t hashmem (const void *, size_t); | |
| 28 static hashval_t cpp_string_hash (const void *); | |
| 29 static int cpp_string_eq (const void *, const void *); | |
| 30 static int count_defs (cpp_reader *, cpp_hashnode *, void *); | |
| 31 static int comp_hashnodes (const void *, const void *); | |
| 32 static int collect_ht_nodes (cpp_reader *, cpp_hashnode *, void *); | |
| 33 static int write_defs (cpp_reader *, cpp_hashnode *, void *); | |
| 34 static int save_macros (cpp_reader *, cpp_hashnode *, void *); | |
|
47
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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changeset
|
35 static int _cpp_save_pushed_macros (cpp_reader *, FILE *); |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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changeset
|
36 static int _cpp_restore_pushed_macros (cpp_reader *, FILE *); |
| 0 | 37 |
| 38 /* This structure represents a macro definition on disk. */ | |
| 39 struct macrodef_struct | |
| 40 { | |
| 41 unsigned int definition_length; | |
| 42 unsigned short name_length; | |
| 43 unsigned short flags; | |
| 44 }; | |
| 45 | |
| 46 /* This is how we write out a macro definition. | |
| 47 Suitable for being called by cpp_forall_identifiers. */ | |
| 48 | |
| 49 static int | |
| 50 write_macdef (cpp_reader *pfile, cpp_hashnode *hn, void *file_p) | |
| 51 { | |
| 52 FILE *f = (FILE *) file_p; | |
| 131 | 53 bool is_void = false; |
| 0 | 54 switch (hn->type) |
| 55 { | |
| 56 case NT_VOID: | |
| 57 if (! (hn->flags & NODE_POISONED)) | |
| 58 return 1; | |
| 131 | 59 is_void = true; |
| 60 goto poisoned; | |
| 0 | 61 |
| 131 | 62 case NT_BUILTIN_MACRO: |
| 0 | 63 return 1; |
| 64 | |
| 131 | 65 case NT_USER_MACRO: |
| 66 if (hn->value.macro->kind != cmk_assert) | |
| 67 { | |
| 68 poisoned: | |
| 69 struct macrodef_struct s; | |
| 70 const unsigned char *defn; | |
| 71 | |
| 72 s.name_length = NODE_LEN (hn); | |
| 73 s.flags = hn->flags & NODE_POISONED; | |
| 74 | |
| 75 if (is_void) | |
| 76 { | |
| 77 defn = NODE_NAME (hn); | |
| 78 s.definition_length = s.name_length; | |
| 79 } | |
| 80 else | |
| 81 { | |
| 82 defn = cpp_macro_definition (pfile, hn); | |
| 83 s.definition_length = ustrlen (defn); | |
| 84 } | |
| 85 | |
| 86 if (fwrite (&s, sizeof (s), 1, f) != 1 | |
| 87 || fwrite (defn, 1, s.definition_length, f) != s.definition_length) | |
| 88 { | |
| 89 cpp_errno (pfile, CPP_DL_ERROR, | |
| 90 "while writing precompiled header"); | |
| 91 return 0; | |
| 92 } | |
| 93 } | |
| 0 | 94 return 1; |
| 95 | |
| 96 default: | |
| 97 abort (); | |
| 98 } | |
| 99 } | |
| 100 | |
| 101 /* This structure records the names of the defined macros. | |
| 102 It's also used as a callback structure for size_initial_idents | |
| 103 and save_idents. */ | |
| 104 | |
| 105 struct cpp_savedstate | |
| 106 { | |
| 107 /* A hash table of the defined identifiers. */ | |
| 108 htab_t definedhash; | |
| 109 /* The size of the definitions of those identifiers (the size of | |
| 110 'definedstrs'). */ | |
| 111 size_t hashsize; | |
| 112 /* Number of definitions */ | |
| 113 size_t n_defs; | |
| 114 /* Array of definitions. In cpp_write_pch_deps it is used for sorting. */ | |
| 115 cpp_hashnode **defs; | |
| 116 /* Space for the next definition. Definitions are null-terminated | |
| 117 strings. */ | |
| 118 unsigned char *definedstrs; | |
| 119 }; | |
| 120 | |
| 121 /* Save this identifier into the state: put it in the hash table, | |
| 122 put the definition in 'definedstrs'. */ | |
| 123 | |
| 124 static int | |
| 125 save_idents (cpp_reader *pfile ATTRIBUTE_UNUSED, cpp_hashnode *hn, void *ss_p) | |
| 126 { | |
| 127 struct cpp_savedstate *const ss = (struct cpp_savedstate *)ss_p; | |
| 128 | |
| 129 if (hn->type != NT_VOID) | |
| 130 { | |
| 131 struct cpp_string news; | |
| 132 void **slot; | |
| 133 | |
| 134 news.len = NODE_LEN (hn); | |
| 135 news.text= NODE_NAME (hn); | |
| 136 slot = htab_find_slot (ss->definedhash, &news, INSERT); | |
| 137 if (*slot == NULL) | |
| 138 { | |
| 139 struct cpp_string *sp; | |
| 140 unsigned char *text; | |
| 141 | |
| 142 sp = XNEW (struct cpp_string); | |
| 143 *slot = sp; | |
| 144 | |
| 145 sp->len = NODE_LEN (hn); | |
| 146 sp->text = text = XNEWVEC (unsigned char, NODE_LEN (hn)); | |
| 147 memcpy (text, NODE_NAME (hn), NODE_LEN (hn)); | |
| 148 } | |
| 149 } | |
| 150 | |
| 151 return 1; | |
| 152 } | |
| 153 | |
| 154 /* Hash some memory in a generic way. */ | |
| 155 | |
| 156 static hashval_t | |
| 157 hashmem (const void *p_p, size_t sz) | |
| 158 { | |
| 159 const unsigned char *p = (const unsigned char *)p_p; | |
| 160 size_t i; | |
| 161 hashval_t h; | |
| 162 | |
| 163 h = 0; | |
| 164 for (i = 0; i < sz; i++) | |
| 165 h = h * 67 - (*p++ - 113); | |
| 166 return h; | |
| 167 } | |
| 168 | |
| 169 /* Hash a cpp string for the hashtable machinery. */ | |
| 170 | |
| 171 static hashval_t | |
| 172 cpp_string_hash (const void *a_p) | |
| 173 { | |
| 174 const struct cpp_string *a = (const struct cpp_string *) a_p; | |
| 175 return hashmem (a->text, a->len); | |
| 176 } | |
| 177 | |
| 178 /* Compare two cpp strings for the hashtable machinery. */ | |
| 179 | |
| 180 static int | |
| 181 cpp_string_eq (const void *a_p, const void *b_p) | |
| 182 { | |
| 183 const struct cpp_string *a = (const struct cpp_string *) a_p; | |
| 184 const struct cpp_string *b = (const struct cpp_string *) b_p; | |
| 185 return (a->len == b->len | |
| 186 && memcmp (a->text, b->text, a->len) == 0); | |
| 187 } | |
| 188 | |
| 111 | 189 /* Free memory associated with cpp_string. */ |
| 190 | |
| 191 static void | |
| 192 cpp_string_free (void *a_p) | |
| 193 { | |
| 194 struct cpp_string *a = (struct cpp_string *) a_p; | |
| 195 free ((void *) a->text); | |
| 196 free (a); | |
| 197 } | |
| 198 | |
| 0 | 199 /* Save the current definitions of the cpp_reader for dependency |
| 200 checking purposes. When writing a precompiled header, this should | |
| 201 be called at the same point in the compilation as cpp_valid_state | |
| 202 would be called when reading the precompiled header back in. */ | |
| 203 | |
| 204 int | |
| 205 cpp_save_state (cpp_reader *r, FILE *f) | |
| 206 { | |
| 207 /* Save the list of non-void identifiers for the dependency checking. */ | |
| 208 r->savedstate = XNEW (struct cpp_savedstate); | |
| 209 r->savedstate->definedhash = htab_create (100, cpp_string_hash, | |
| 111 | 210 cpp_string_eq, cpp_string_free); |
| 0 | 211 cpp_forall_identifiers (r, save_idents, r->savedstate); |
| 212 | |
| 213 /* Write out the list of defined identifiers. */ | |
| 214 cpp_forall_identifiers (r, write_macdef, f); | |
| 215 | |
| 216 return 0; | |
| 217 } | |
| 218 | |
| 219 /* Calculate the 'hashsize' field of the saved state. */ | |
| 220 | |
| 221 static int | |
| 222 count_defs (cpp_reader *pfile ATTRIBUTE_UNUSED, cpp_hashnode *hn, void *ss_p) | |
| 223 { | |
| 224 struct cpp_savedstate *const ss = (struct cpp_savedstate *)ss_p; | |
| 225 | |
| 226 switch (hn->type) | |
| 227 { | |
| 131 | 228 case NT_BUILTIN_MACRO: |
| 229 return 1; | |
| 230 | |
| 231 case NT_USER_MACRO: | |
| 232 if (hn->value.macro->kind == cmk_assert) | |
| 0 | 233 return 1; |
| 234 | |
| 111 | 235 /* fall through. */ |
| 0 | 236 |
| 237 case NT_VOID: | |
| 238 { | |
| 239 struct cpp_string news; | |
| 240 void **slot; | |
| 241 | |
| 242 news.len = NODE_LEN (hn); | |
| 243 news.text = NODE_NAME (hn); | |
| 244 slot = (void **) htab_find (ss->definedhash, &news); | |
| 245 if (slot == NULL) | |
| 246 { | |
| 247 ss->hashsize += NODE_LEN (hn) + 1; | |
| 248 ss->n_defs += 1; | |
| 249 } | |
| 250 } | |
| 251 return 1; | |
| 252 | |
| 253 default: | |
| 254 abort (); | |
| 255 } | |
| 256 } | |
| 257 | |
| 258 /* Collect the identifiers into the state's string table. */ | |
| 259 static int | |
| 260 write_defs (cpp_reader *pfile ATTRIBUTE_UNUSED, cpp_hashnode *hn, void *ss_p) | |
| 261 { | |
| 262 struct cpp_savedstate *const ss = (struct cpp_savedstate *)ss_p; | |
| 263 | |
| 264 switch (hn->type) | |
| 265 { | |
| 131 | 266 case NT_BUILTIN_MACRO: |
| 267 return 1; | |
| 268 | |
| 269 case NT_USER_MACRO: | |
| 270 if (hn->value.macro->kind == cmk_assert) | |
| 0 | 271 return 1; |
| 272 | |
| 111 | 273 /* fall through. */ |
| 0 | 274 |
| 275 case NT_VOID: | |
| 276 { | |
| 277 struct cpp_string news; | |
| 278 void **slot; | |
| 279 | |
| 280 news.len = NODE_LEN (hn); | |
| 281 news.text = NODE_NAME (hn); | |
| 282 slot = (void **) htab_find (ss->definedhash, &news); | |
| 283 if (slot == NULL) | |
| 284 { | |
| 285 ss->defs[ss->n_defs] = hn; | |
| 286 ss->n_defs += 1; | |
| 287 } | |
| 288 } | |
| 289 return 1; | |
| 290 | |
| 291 default: | |
| 292 abort (); | |
| 293 } | |
| 294 } | |
| 295 | |
| 296 /* Comparison function for qsort. The arguments point to pointers of | |
| 297 type ht_hashnode *. */ | |
| 298 static int | |
| 299 comp_hashnodes (const void *px, const void *py) | |
| 300 { | |
| 301 cpp_hashnode *x = *(cpp_hashnode **) px; | |
| 302 cpp_hashnode *y = *(cpp_hashnode **) py; | |
| 303 return ustrcmp (NODE_NAME (x), NODE_NAME (y)); | |
| 304 } | |
| 305 | |
| 306 /* Write out the remainder of the dependency information. This should be | |
| 307 called after the PCH is ready to be saved. */ | |
| 308 | |
| 309 int | |
| 310 cpp_write_pch_deps (cpp_reader *r, FILE *f) | |
| 311 { | |
| 312 struct macrodef_struct z; | |
| 313 struct cpp_savedstate *const ss = r->savedstate; | |
| 314 unsigned char *definedstrs; | |
| 315 size_t i; | |
| 316 | |
| 317 /* Collect the list of identifiers which have been seen and | |
| 318 weren't defined to anything previously. */ | |
| 319 ss->hashsize = 0; | |
| 320 ss->n_defs = 0; | |
| 321 cpp_forall_identifiers (r, count_defs, ss); | |
| 322 | |
| 323 ss->defs = XNEWVEC (cpp_hashnode *, ss->n_defs); | |
| 324 ss->n_defs = 0; | |
| 325 cpp_forall_identifiers (r, write_defs, ss); | |
| 326 | |
| 327 /* Sort the list, copy it into a buffer, and write it out. */ | |
| 328 qsort (ss->defs, ss->n_defs, sizeof (cpp_hashnode *), &comp_hashnodes); | |
| 329 definedstrs = ss->definedstrs = XNEWVEC (unsigned char, ss->hashsize); | |
| 330 for (i = 0; i < ss->n_defs; ++i) | |
| 331 { | |
| 332 size_t len = NODE_LEN (ss->defs[i]); | |
| 333 memcpy (definedstrs, NODE_NAME (ss->defs[i]), len + 1); | |
| 334 definedstrs += len + 1; | |
| 335 } | |
| 336 | |
| 337 memset (&z, 0, sizeof (z)); | |
| 338 z.definition_length = ss->hashsize; | |
| 339 if (fwrite (&z, sizeof (z), 1, f) != 1 | |
| 340 || fwrite (ss->definedstrs, ss->hashsize, 1, f) != 1) | |
| 341 { | |
| 342 cpp_errno (r, CPP_DL_ERROR, "while writing precompiled header"); | |
| 343 return -1; | |
| 344 } | |
| 345 free (ss->definedstrs); | |
| 111 | 346 free (ss->defs); |
| 347 htab_delete (ss->definedhash); | |
| 0 | 348 |
| 349 /* Free the saved state. */ | |
| 350 free (ss); | |
| 351 r->savedstate = NULL; | |
| 352 | |
| 353 /* Save the next value of __COUNTER__. */ | |
| 354 if (fwrite (&r->counter, sizeof (r->counter), 1, f) != 1) | |
| 355 { | |
| 356 cpp_errno (r, CPP_DL_ERROR, "while writing precompiled header"); | |
| 357 return -1; | |
| 358 } | |
| 359 | |
| 360 return 0; | |
| 361 } | |
| 362 | |
| 363 /* Write out the definitions of the preprocessor, in a form suitable for | |
| 364 cpp_read_state. */ | |
| 365 | |
| 366 int | |
| 367 cpp_write_pch_state (cpp_reader *r, FILE *f) | |
| 368 { | |
| 369 if (!r->deps) | |
| 370 r->deps = deps_init (); | |
| 371 | |
| 372 if (deps_save (r->deps, f) != 0) | |
| 373 { | |
| 374 cpp_errno (r, CPP_DL_ERROR, "while writing precompiled header"); | |
| 375 return -1; | |
| 376 } | |
| 377 | |
| 378 if (! _cpp_save_file_entries (r, f)) | |
| 379 { | |
| 380 cpp_errno (r, CPP_DL_ERROR, "while writing precompiled header"); | |
| 381 return -1; | |
| 382 } | |
| 383 | |
| 384 /* Save the next __COUNTER__ value. When we include a precompiled header, | |
| 385 we need to start at the offset we would have if the header had been | |
| 386 included normally. */ | |
| 387 if (fwrite (&r->counter, sizeof (r->counter), 1, f) != 1) | |
| 388 { | |
| 389 cpp_errno (r, CPP_DL_ERROR, "while writing precompiled header"); | |
| 390 return -1; | |
| 391 } | |
| 392 | |
|
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3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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diff
changeset
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393 /* Write saved macros. */ |
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3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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394 if (! _cpp_save_pushed_macros (r, f)) |
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3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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395 { |
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3bfb6c00c1e0
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kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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396 cpp_errno (r, CPP_DL_ERROR, "while writing precompiled header"); |
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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397 return -1; |
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3bfb6c00c1e0
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398 } |
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3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
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399 |
| 0 | 400 return 0; |
| 401 } | |
| 402 | |
|
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3bfb6c00c1e0
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parents:
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403 static int |
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3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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404 _cpp_restore_pushed_macros (cpp_reader *r, FILE *f) |
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3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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405 { |
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3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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406 size_t count_saved = 0; |
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3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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407 size_t i; |
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3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
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408 struct def_pragma_macro *p; |
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update it from 4.4.2 to 4.4.3.
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409 size_t nlen; |
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update it from 4.4.2 to 4.4.3.
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410 uchar *defn; |
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3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
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411 size_t defnlen; |
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parents:
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412 |
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3bfb6c00c1e0
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kent <kent@cr.ie.u-ryukyu.ac.jp>
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413 if (fread (&count_saved, sizeof (count_saved), 1, f) != 1) |
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update it from 4.4.2 to 4.4.3.
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414 return 0; |
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3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
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415 if (! count_saved) |
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3bfb6c00c1e0
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416 return 1; |
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3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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417 for (i = 0; i < count_saved; i++) |
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3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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418 { |
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3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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changeset
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419 if (fread (&nlen, sizeof (nlen), 1, f) != 1) |
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3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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420 return 0; |
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3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
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parents:
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421 p = XNEW (struct def_pragma_macro); |
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f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
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422 memset (p, 0, sizeof (struct def_pragma_macro)); |
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423 p->name = XNEWVAR (char, nlen + 1); |
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update it from 4.4.2 to 4.4.3.
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424 p->name[nlen] = 0; |
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3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
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changeset
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425 if (fread (p->name, nlen, 1, f) != 1) |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
426 return 0; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
427 if (fread (&defnlen, sizeof (defnlen), 1, f) != 1) |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
428 return 0; |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
429 if (defnlen == 0) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
430 p->is_undef = 1; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
431 else |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
432 { |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
433 defn = XNEWVEC (uchar, defnlen + 1); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
434 defn[defnlen] = 0; |
|
47
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
435 |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
436 if (fread (defn, defnlen, 1, f) != 1) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
437 return 0; |
|
47
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
438 |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
439 p->definition = defn; |
| 145 | 440 if (fread (&(p->line), sizeof (location_t), 1, f) != 1) |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
441 return 0; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
442 defnlen = 0; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
443 if (fread (&defnlen, sizeof (defnlen), 1, f) != 1) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
444 return 0; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
445 p->syshdr = ((defnlen & 1) != 0 ? 1 : 0); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
446 p->used = ((defnlen & 2) != 0 ? 1 : 0); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
447 } |
|
47
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
448 |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
449 p->next = r->pushed_macros; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
450 r->pushed_macros = p; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
451 } |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
452 return 1; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
453 } |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
454 |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
455 static int |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
456 _cpp_save_pushed_macros (cpp_reader *r, FILE *f) |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
457 { |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
458 size_t count_saved = 0; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
459 size_t i; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
460 struct def_pragma_macro *p,**pp; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
461 size_t defnlen; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
462 |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
463 /* Get count. */ |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
464 p = r->pushed_macros; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
465 while (p != NULL) |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
466 { |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
467 count_saved++; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
468 p = p->next; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
469 } |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
470 if (fwrite (&count_saved, sizeof (count_saved), 1, f) != 1) |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
471 return 0; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
472 if (!count_saved) |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
473 return 1; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
474 |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
475 pp = (struct def_pragma_macro **) alloca (sizeof (struct def_pragma_macro *) |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
476 * count_saved); |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
477 /* Store them in reverse order. */ |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
478 p = r->pushed_macros; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
479 i = count_saved; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
480 while (p != NULL) |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
481 { |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
482 --i; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
483 pp[i] = p; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
484 p = p->next; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
485 } |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
486 for (i = 0; i < count_saved; i++) |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
487 { |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
488 defnlen = strlen (pp[i]->name); |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
489 if (fwrite (&defnlen, sizeof (size_t), 1, f) != 1 |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
490 || fwrite (pp[i]->name, defnlen, 1, f) != 1) |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
491 return 0; |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
492 if (pp[i]->is_undef) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
493 { |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
494 defnlen = 0; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
495 if (fwrite (&defnlen, sizeof (size_t), 1, f) != 1) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
496 return 0; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
497 } |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
498 else |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
499 { |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
500 defnlen = ustrlen (pp[i]->definition); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
501 if (fwrite (&defnlen, sizeof (size_t), 1, f) != 1 |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
502 || fwrite (pp[i]->definition, defnlen, 1, f) != 1) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
503 return 0; |
| 145 | 504 if (fwrite (&(pp[i]->line), sizeof (location_t), 1, f) != 1) |
|
67
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
505 return 0; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
506 defnlen = 0; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
507 defnlen |= (pp[i]->syshdr != 0 ? 1 : 0); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
508 defnlen |= (pp[i]->used != 0 ? 2 : 0); |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
509 if (fwrite (&defnlen, sizeof (defnlen), 1, f) != 1) |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
510 return 0; |
|
f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp>
parents:
63
diff
changeset
|
511 } |
|
47
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
512 } |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
513 return 1; |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
514 } |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
515 |
| 0 | 516 |
| 517 /* Data structure to transform hash table nodes into a sorted list */ | |
| 518 | |
| 519 struct ht_node_list | |
| 520 { | |
| 521 /* Array of nodes */ | |
| 522 cpp_hashnode **defs; | |
| 523 /* Number of nodes in the array */ | |
| 524 size_t n_defs; | |
| 525 /* Size of the allocated array */ | |
| 526 size_t asize; | |
| 527 }; | |
| 528 | |
| 529 /* Callback for collecting identifiers from hash table */ | |
| 530 | |
| 531 static int | |
| 532 collect_ht_nodes (cpp_reader *pfile ATTRIBUTE_UNUSED, cpp_hashnode *hn, | |
| 533 void *nl_p) | |
| 534 { | |
| 535 struct ht_node_list *const nl = (struct ht_node_list *)nl_p; | |
| 536 | |
| 537 if (hn->type != NT_VOID || hn->flags & NODE_POISONED) | |
| 538 { | |
| 539 if (nl->n_defs == nl->asize) | |
| 540 { | |
| 541 nl->asize *= 2; | |
| 542 nl->defs = XRESIZEVEC (cpp_hashnode *, nl->defs, nl->asize); | |
| 543 } | |
| 544 | |
| 545 nl->defs[nl->n_defs] = hn; | |
| 546 ++nl->n_defs; | |
| 547 } | |
| 548 return 1; | |
| 549 } | |
| 550 | |
| 551 | |
| 552 /* Return nonzero if FD is a precompiled header which is consistent | |
| 553 with the preprocessor's current definitions. It will be consistent | |
| 554 when: | |
| 555 | |
| 556 - anything that was defined just before the PCH was generated | |
| 557 is defined the same way now; and | |
| 558 - anything that was not defined then, but is defined now, was not | |
| 559 used by the PCH. | |
| 560 | |
| 561 NAME is used to print warnings if `warn_invalid_pch' is set in the | |
| 562 reader's flags. | |
| 563 */ | |
| 564 | |
| 565 int | |
| 566 cpp_valid_state (cpp_reader *r, const char *name, int fd) | |
| 567 { | |
| 568 struct macrodef_struct m; | |
| 569 size_t namebufsz = 256; | |
| 570 unsigned char *namebuf = XNEWVEC (unsigned char, namebufsz); | |
| 571 unsigned char *undeftab = NULL; | |
| 572 struct ht_node_list nl = { 0, 0, 0 }; | |
| 573 unsigned char *first, *last; | |
| 574 unsigned int i; | |
| 575 unsigned int counter; | |
| 576 | |
| 577 /* Read in the list of identifiers that must be defined | |
| 578 Check that they are defined in the same way. */ | |
| 579 for (;;) | |
| 580 { | |
| 581 cpp_hashnode *h; | |
| 582 const unsigned char *newdefn; | |
| 583 | |
| 584 if (read (fd, &m, sizeof (m)) != sizeof (m)) | |
| 585 goto error; | |
| 586 | |
| 587 if (m.name_length == 0) | |
| 588 break; | |
| 589 | |
| 590 /* If this file is already preprocessed, there won't be any | |
| 591 macros defined, and that's OK. */ | |
| 592 if (CPP_OPTION (r, preprocessed)) | |
| 593 { | |
| 594 if (lseek (fd, m.definition_length, SEEK_CUR) == -1) | |
| 595 goto error; | |
| 596 continue; | |
| 597 } | |
| 598 | |
| 599 if (m.definition_length > namebufsz) | |
| 600 { | |
| 601 free (namebuf); | |
| 602 namebufsz = m.definition_length + 256; | |
| 603 namebuf = XNEWVEC (unsigned char, namebufsz); | |
| 604 } | |
| 605 | |
| 606 if ((size_t)read (fd, namebuf, m.definition_length) | |
| 607 != m.definition_length) | |
| 608 goto error; | |
| 609 | |
| 610 h = cpp_lookup (r, namebuf, m.name_length); | |
| 611 if (m.flags & NODE_POISONED | |
| 612 || h->flags & NODE_POISONED) | |
| 613 { | |
| 614 if (CPP_OPTION (r, warn_invalid_pch)) | |
|
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615 cpp_warning_syshdr (r, CPP_W_INVALID_PCH, |
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616 "%s: not used because `%.*s' is poisoned", |
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|
617 name, m.name_length, namebuf); |
| 0 | 618 goto fail; |
| 619 } | |
| 620 | |
| 131 | 621 if (h->type == NT_VOID) |
| 0 | 622 { |
| 623 /* It's ok if __GCC_HAVE_DWARF2_CFI_ASM becomes undefined, | |
| 624 as in, when the PCH file is created with -g and we're | |
| 625 attempting to use it without -g. Restoring the PCH file | |
| 626 is supposed to bring in this definition *and* enable the | |
| 627 generation of call frame information, so that precompiled | |
| 111 | 628 definitions that take this macro into account, to decide |
| 0 | 629 what asm to emit, won't issue .cfi directives when the |
| 630 compiler doesn't. */ | |
| 631 if (!(h->flags & NODE_USED) | |
| 632 && m.name_length == sizeof ("__GCC_HAVE_DWARF2_CFI_ASM") - 1 | |
| 633 && !memcmp (namebuf, "__GCC_HAVE_DWARF2_CFI_ASM", m.name_length)) | |
| 634 continue; | |
| 635 | |
| 636 if (CPP_OPTION (r, warn_invalid_pch)) | |
|
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637 cpp_warning_syshdr (r, CPP_W_INVALID_PCH, |
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638 "%s: not used because `%.*s' not defined", |
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639 name, m.name_length, namebuf); |
| 0 | 640 goto fail; |
| 641 } | |
| 642 | |
| 643 newdefn = cpp_macro_definition (r, h); | |
| 644 | |
| 645 if (m.definition_length != ustrlen (newdefn) | |
| 646 || memcmp (namebuf, newdefn, m.definition_length) != 0) | |
| 647 { | |
| 648 if (CPP_OPTION (r, warn_invalid_pch)) | |
|
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649 cpp_warning_syshdr (r, CPP_W_INVALID_PCH, |
| 0 | 650 "%s: not used because `%.*s' defined as `%s' not `%.*s'", |
| 651 name, m.name_length, namebuf, newdefn + m.name_length, | |
| 652 m.definition_length - m.name_length, | |
| 653 namebuf + m.name_length); | |
| 654 goto fail; | |
| 655 } | |
| 656 } | |
| 657 free (namebuf); | |
| 658 namebuf = NULL; | |
| 659 | |
| 660 /* Read in the list of identifiers that must not be defined. | |
| 661 Check that they really aren't. */ | |
| 662 undeftab = XNEWVEC (unsigned char, m.definition_length); | |
| 663 if ((size_t) read (fd, undeftab, m.definition_length) != m.definition_length) | |
| 664 goto error; | |
| 665 | |
| 666 /* Collect identifiers from the current hash table. */ | |
| 667 nl.n_defs = 0; | |
| 668 nl.asize = 10; | |
| 669 nl.defs = XNEWVEC (cpp_hashnode *, nl.asize); | |
| 670 cpp_forall_identifiers (r, &collect_ht_nodes, &nl); | |
| 671 qsort (nl.defs, nl.n_defs, sizeof (cpp_hashnode *), &comp_hashnodes); | |
| 672 | |
| 673 /* Loop through nl.defs and undeftab, both of which are sorted lists. | |
| 674 There should be no matches. */ | |
| 675 first = undeftab; | |
| 676 last = undeftab + m.definition_length; | |
| 677 i = 0; | |
| 678 | |
| 679 while (first < last && i < nl.n_defs) | |
| 680 { | |
| 681 int cmp = ustrcmp (first, NODE_NAME (nl.defs[i])); | |
| 682 | |
| 683 if (cmp < 0) | |
| 684 first += ustrlen (first) + 1; | |
| 685 else if (cmp > 0) | |
| 686 ++i; | |
| 687 else | |
| 688 { | |
| 689 if (CPP_OPTION (r, warn_invalid_pch)) | |
|
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690 cpp_warning_syshdr (r, CPP_W_INVALID_PCH, |
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691 "%s: not used because `%s' is defined", |
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|
692 name, first); |
| 0 | 693 goto fail; |
| 694 } | |
| 695 } | |
| 696 | |
| 697 free(nl.defs); | |
| 698 nl.defs = NULL; | |
| 699 free (undeftab); | |
| 700 undeftab = NULL; | |
| 701 | |
| 702 /* Read in the next value of __COUNTER__. | |
| 703 Check that (a) __COUNTER__ was not used in the pch or (b) __COUNTER__ | |
| 704 has not been used in this translation unit. */ | |
| 705 if (read (fd, &counter, sizeof (counter)) != sizeof (counter)) | |
| 706 goto error; | |
| 707 if (counter && r->counter) | |
| 708 { | |
| 709 if (CPP_OPTION (r, warn_invalid_pch)) | |
|
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710 cpp_warning_syshdr (r, CPP_W_INVALID_PCH, |
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|
711 "%s: not used because `__COUNTER__' is invalid", |
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|
712 name); |
| 111 | 713 goto fail; |
| 0 | 714 } |
| 715 | |
| 716 /* We win! */ | |
| 717 return 0; | |
| 718 | |
| 719 error: | |
| 720 cpp_errno (r, CPP_DL_ERROR, "while reading precompiled header"); | |
| 721 | |
| 722 fail: | |
| 111 | 723 free (namebuf); |
| 724 free (undeftab); | |
| 725 free (nl.defs); | |
| 0 | 726 return 1; |
| 727 } | |
| 728 | |
| 729 /* Save all the existing macros. */ | |
| 730 | |
| 731 struct save_macro_data | |
| 732 { | |
| 733 uchar **defns; | |
| 734 size_t count; | |
| 735 size_t array_size; | |
| 736 char **saved_pragmas; | |
| 737 }; | |
| 738 | |
| 739 /* Save the definition of a single macro, so that it will persist | |
| 740 across a PCH restore. Because macro data is in GCed memory, which | |
| 741 will be blown away by PCH, it must be temporarily copied to | |
| 742 malloced memory. (The macros will refer to identifier nodes which | |
| 743 are also GCed and so on, so the copying is done by turning them | |
| 744 into self-contained strings.) The assumption is that most macro | |
| 745 definitions will come from the PCH file, not from the compilation | |
| 746 before the PCH file is loaded, so it doesn't matter that this is | |
| 747 a little expensive. | |
| 748 | |
| 749 It would reduce the cost even further if macros defined in the PCH | |
| 750 file were not saved in this way, but this is not done (yet), except | |
| 751 for builtins, and for #assert by default. */ | |
| 752 | |
| 753 static int | |
| 754 save_macros (cpp_reader *r, cpp_hashnode *h, void *data_p) | |
| 755 { | |
| 756 struct save_macro_data *data = (struct save_macro_data *)data_p; | |
|
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diff
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|
757 |
| 131 | 758 if (cpp_user_macro_p (h)) |
| 0 | 759 { |
| 760 if (data->count == data->array_size) | |
| 761 { | |
| 762 data->array_size *= 2; | |
| 763 data->defns = XRESIZEVEC (uchar *, data->defns, (data->array_size)); | |
| 764 } | |
| 765 | |
| 131 | 766 const uchar * defn = cpp_macro_definition (r, h); |
| 767 size_t defnlen = ustrlen (defn); | |
| 0 | 768 |
| 131 | 769 data->defns[data->count] = (uchar *) xmemdup (defn, defnlen, defnlen + 2); |
| 770 data->defns[data->count][defnlen] = '\n'; | |
| 0 | 771 data->count++; |
| 772 } | |
| 131 | 773 |
| 0 | 774 return 1; |
| 775 } | |
| 776 | |
| 777 /* Prepare to restore the state, by saving the currently-defined | |
| 778 macros in 'data'. */ | |
| 779 | |
| 780 void | |
| 781 cpp_prepare_state (cpp_reader *r, struct save_macro_data **data) | |
| 782 { | |
| 783 struct save_macro_data *d = XNEW (struct save_macro_data); | |
| 784 | |
| 785 d->array_size = 512; | |
| 786 d->defns = XNEWVEC (uchar *, d->array_size); | |
| 787 d->count = 0; | |
| 788 cpp_forall_identifiers (r, save_macros, d); | |
| 789 d->saved_pragmas = _cpp_save_pragma_names (r); | |
| 790 *data = d; | |
| 791 } | |
| 792 | |
| 793 /* Given a precompiled header that was previously determined to be valid, | |
| 794 apply all its definitions (and undefinitions) to the current state. | |
| 795 DEPNAME is passed to deps_restore. */ | |
| 796 | |
| 797 int | |
| 798 cpp_read_state (cpp_reader *r, const char *name, FILE *f, | |
| 799 struct save_macro_data *data) | |
| 800 { | |
| 801 size_t i; | |
| 802 struct lexer_state old_state; | |
| 803 unsigned int counter; | |
| 804 | |
| 805 /* Restore spec_nodes, which will be full of references to the old | |
| 806 hashtable entries and so will now be invalid. */ | |
| 807 { | |
| 808 struct spec_nodes *s = &r->spec_nodes; | |
| 809 s->n_defined = cpp_lookup (r, DSC("defined")); | |
| 810 s->n_true = cpp_lookup (r, DSC("true")); | |
| 811 s->n_false = cpp_lookup (r, DSC("false")); | |
| 812 s->n__VA_ARGS__ = cpp_lookup (r, DSC("__VA_ARGS__")); | |
| 131 | 813 s->n__VA_OPT__ = cpp_lookup (r, DSC("__VA_OPT__")); |
| 0 | 814 } |
| 815 | |
| 816 old_state = r->state; | |
| 817 r->state.in_directive = 1; | |
| 818 r->state.prevent_expansion = 1; | |
| 819 r->state.angled_headers = 0; | |
| 820 | |
| 821 /* Run through the carefully-saved macros, insert them. */ | |
| 822 for (i = 0; i < data->count; i++) | |
| 823 { | |
| 824 cpp_hashnode *h; | |
| 825 size_t namelen; | |
| 826 uchar *defn; | |
| 827 | |
| 828 namelen = ustrcspn (data->defns[i], "( \n"); | |
| 829 h = cpp_lookup (r, data->defns[i], namelen); | |
| 830 defn = data->defns[i] + namelen; | |
| 831 | |
| 832 /* The PCH file is valid, so we know that if there is a definition | |
| 833 from the PCH file it must be the same as the one we had | |
| 834 originally, and so do not need to restore it. */ | |
| 835 if (h->type == NT_VOID) | |
| 836 { | |
| 837 if (cpp_push_buffer (r, defn, ustrchr (defn, '\n') - defn, true) | |
| 838 != NULL) | |
| 839 { | |
| 840 _cpp_clean_line (r); | |
| 841 if (!_cpp_create_definition (r, h)) | |
| 842 abort (); | |
| 843 _cpp_pop_buffer (r); | |
| 844 } | |
| 845 else | |
| 846 abort (); | |
| 847 } | |
| 848 | |
| 849 free (data->defns[i]); | |
| 850 } | |
| 851 r->state = old_state; | |
| 852 | |
| 853 _cpp_restore_pragma_names (r, data->saved_pragmas); | |
| 854 | |
| 855 free (data); | |
| 856 | |
| 857 if (deps_restore (r->deps, f, CPP_OPTION (r, restore_pch_deps) ? name : NULL) | |
| 858 != 0) | |
| 859 goto error; | |
| 860 | |
| 861 if (! _cpp_read_file_entries (r, f)) | |
| 862 goto error; | |
| 863 | |
| 864 if (fread (&counter, sizeof (counter), 1, f) != 1) | |
| 865 goto error; | |
| 866 | |
| 867 if (!r->counter) | |
| 868 r->counter = counter; | |
| 869 | |
|
47
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
870 /* Read pushed macros. */ |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
871 if (! _cpp_restore_pushed_macros (r, f)) |
|
3bfb6c00c1e0
update it from 4.4.2 to 4.4.3.
kent <kent@cr.ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
872 goto error; |
| 0 | 873 return 0; |
| 874 | |
| 875 error: | |
| 876 cpp_errno (r, CPP_DL_ERROR, "while reading precompiled header"); | |
| 877 return -1; | |
| 878 } |