Mercurial > hg > CbC > CbC_gcc
annotate gcc/tlink.c @ 55:77e2b8dfacca gcc-4.4.5
update it from 4.4.3 to 4.5.0
| author | ryoma <e075725@ie.u-ryukyu.ac.jp> |
|---|---|
| date | Fri, 12 Feb 2010 23:39:51 +0900 |
| parents | a06113de4d67 |
| children | b7f97abdc517 |
| rev | line source |
|---|---|
| 0 | 1 /* Scan linker error messages for missing template instantiations and provide |
| 2 them. | |
| 3 | |
| 4 Copyright (C) 1995, 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2007, 2008 | |
| 5 Free Software Foundation, Inc. | |
| 6 Contributed by Jason Merrill (jason@cygnus.com). | |
| 7 | |
| 8 This file is part of GCC. | |
| 9 | |
| 10 GCC is free software; you can redistribute it and/or modify it under | |
| 11 the terms of the GNU General Public License as published by the Free | |
| 12 Software Foundation; either version 3, or (at your option) any later | |
| 13 version. | |
| 14 | |
| 15 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
| 16 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 18 for more details. | |
| 19 | |
| 20 You should have received a copy of the GNU General Public License | |
| 21 along with GCC; see the file COPYING3. If not see | |
| 22 <http://www.gnu.org/licenses/>. */ | |
| 23 | |
| 24 #include "config.h" | |
| 25 #include "system.h" | |
| 26 #include "coretypes.h" | |
| 27 #include "tm.h" | |
| 28 #include "intl.h" | |
| 29 #include "obstack.h" | |
| 30 #include "hashtab.h" | |
| 31 #include "demangle.h" | |
| 32 #include "collect2.h" | |
| 33 #include "libiberty.h" | |
| 34 | |
| 35 #define MAX_ITERATIONS 17 | |
| 36 | |
| 37 /* Defined in the automatically-generated underscore.c. */ | |
| 38 extern int prepends_underscore; | |
| 39 | |
| 40 static int tlink_verbose; | |
| 41 | |
| 42 static char *initial_cwd; | |
| 43 | |
| 44 /* Hash table boilerplate for working with htab_t. We have hash tables | |
| 45 for symbol names, file names, and demangled symbols. */ | |
| 46 | |
| 47 typedef struct symbol_hash_entry | |
| 48 { | |
| 49 const char *key; | |
| 50 struct file_hash_entry *file; | |
| 51 int chosen; | |
| 52 int tweaking; | |
| 53 int tweaked; | |
| 54 } symbol; | |
| 55 | |
| 56 typedef struct file_hash_entry | |
| 57 { | |
| 58 const char *key; | |
| 59 const char *args; | |
| 60 const char *dir; | |
| 61 const char *main; | |
| 62 int tweaking; | |
| 63 } file; | |
| 64 | |
| 65 typedef struct demangled_hash_entry | |
| 66 { | |
| 67 const char *key; | |
| 68 const char *mangled; | |
| 69 } demangled; | |
| 70 | |
| 71 /* Hash and comparison functions for these hash tables. */ | |
| 72 | |
| 73 static int hash_string_eq (const void *, const void *); | |
| 74 static hashval_t hash_string_hash (const void *); | |
| 75 | |
| 76 static int | |
| 77 hash_string_eq (const void *s1_p, const void *s2_p) | |
| 78 { | |
| 79 const char *const *s1 = (const char *const *) s1_p; | |
| 80 const char *s2 = (const char *) s2_p; | |
| 81 return strcmp (*s1, s2) == 0; | |
| 82 } | |
| 83 | |
| 84 static hashval_t | |
| 85 hash_string_hash (const void *s_p) | |
| 86 { | |
| 87 const char *const *s = (const char *const *) s_p; | |
| 88 return (*htab_hash_string) (*s); | |
| 89 } | |
| 90 | |
| 91 static htab_t symbol_table; | |
| 92 | |
| 93 static struct symbol_hash_entry * symbol_hash_lookup (const char *, int); | |
| 94 static struct file_hash_entry * file_hash_lookup (const char *); | |
| 95 static struct demangled_hash_entry *demangled_hash_lookup (const char *, int); | |
| 96 static void symbol_push (symbol *); | |
| 97 static symbol * symbol_pop (void); | |
| 98 static void file_push (file *); | |
| 99 static file * file_pop (void); | |
| 100 static void tlink_init (void); | |
| 101 static int tlink_execute (const char *, char **, const char *, const char *); | |
| 102 static char * frob_extension (const char *, const char *); | |
| 103 static char * obstack_fgets (FILE *, struct obstack *); | |
| 104 static char * tfgets (FILE *); | |
| 105 static char * pfgets (FILE *); | |
| 106 static void freadsym (FILE *, file *, int); | |
| 107 static void read_repo_file (file *); | |
| 108 static void maybe_tweak (char *, file *); | |
| 109 static int recompile_files (void); | |
| 110 static int read_repo_files (char **); | |
| 111 static void demangle_new_symbols (void); | |
| 112 static int scan_linker_output (const char *); | |
| 113 | |
| 114 /* Look up an entry in the symbol hash table. */ | |
| 115 | |
| 116 static struct symbol_hash_entry * | |
| 117 symbol_hash_lookup (const char *string, int create) | |
| 118 { | |
| 119 void **e; | |
| 120 e = htab_find_slot_with_hash (symbol_table, string, | |
| 121 (*htab_hash_string) (string), | |
| 122 create ? INSERT : NO_INSERT); | |
| 123 if (e == NULL) | |
| 124 return NULL; | |
| 125 if (*e == NULL) | |
| 126 { | |
| 127 struct symbol_hash_entry *v; | |
| 128 *e = v = XCNEW (struct symbol_hash_entry); | |
| 129 v->key = xstrdup (string); | |
| 130 } | |
| 131 return (struct symbol_hash_entry *) *e; | |
| 132 } | |
| 133 | |
| 134 static htab_t file_table; | |
| 135 | |
| 136 /* Look up an entry in the file hash table. */ | |
| 137 | |
| 138 static struct file_hash_entry * | |
| 139 file_hash_lookup (const char *string) | |
| 140 { | |
| 141 void **e; | |
| 142 e = htab_find_slot_with_hash (file_table, string, | |
| 143 (*htab_hash_string) (string), | |
| 144 INSERT); | |
| 145 if (*e == NULL) | |
| 146 { | |
| 147 struct file_hash_entry *v; | |
| 148 *e = v = XCNEW (struct file_hash_entry); | |
| 149 v->key = xstrdup (string); | |
| 150 } | |
| 151 return (struct file_hash_entry *) *e; | |
| 152 } | |
| 153 | |
| 154 static htab_t demangled_table; | |
| 155 | |
| 156 /* Look up an entry in the demangled name hash table. */ | |
| 157 | |
| 158 static struct demangled_hash_entry * | |
| 159 demangled_hash_lookup (const char *string, int create) | |
| 160 { | |
| 161 void **e; | |
| 162 e = htab_find_slot_with_hash (demangled_table, string, | |
| 163 (*htab_hash_string) (string), | |
| 164 create ? INSERT : NO_INSERT); | |
| 165 if (e == NULL) | |
| 166 return NULL; | |
| 167 if (*e == NULL) | |
| 168 { | |
| 169 struct demangled_hash_entry *v; | |
| 170 *e = v = XCNEW (struct demangled_hash_entry); | |
| 171 v->key = xstrdup (string); | |
| 172 } | |
| 173 return (struct demangled_hash_entry *) *e; | |
| 174 } | |
| 175 | |
| 176 /* Stack code. */ | |
| 177 | |
| 178 struct symbol_stack_entry | |
| 179 { | |
| 180 symbol *value; | |
| 181 struct symbol_stack_entry *next; | |
| 182 }; | |
| 183 struct obstack symbol_stack_obstack; | |
| 184 struct symbol_stack_entry *symbol_stack; | |
| 185 | |
| 186 struct file_stack_entry | |
| 187 { | |
| 188 file *value; | |
| 189 struct file_stack_entry *next; | |
| 190 }; | |
| 191 struct obstack file_stack_obstack; | |
| 192 struct file_stack_entry *file_stack; | |
| 193 | |
| 194 static void | |
| 195 symbol_push (symbol *p) | |
| 196 { | |
| 197 struct symbol_stack_entry *ep | |
| 198 = XOBNEW (&symbol_stack_obstack, struct symbol_stack_entry); | |
| 199 ep->value = p; | |
| 200 ep->next = symbol_stack; | |
| 201 symbol_stack = ep; | |
| 202 } | |
| 203 | |
| 204 static symbol * | |
| 205 symbol_pop (void) | |
| 206 { | |
| 207 struct symbol_stack_entry *ep = symbol_stack; | |
| 208 symbol *p; | |
| 209 if (ep == NULL) | |
| 210 return NULL; | |
| 211 p = ep->value; | |
| 212 symbol_stack = ep->next; | |
| 213 obstack_free (&symbol_stack_obstack, ep); | |
| 214 return p; | |
| 215 } | |
| 216 | |
| 217 static void | |
| 218 file_push (file *p) | |
| 219 { | |
| 220 struct file_stack_entry *ep; | |
| 221 | |
| 222 if (p->tweaking) | |
| 223 return; | |
| 224 | |
| 225 ep = XOBNEW (&file_stack_obstack, struct file_stack_entry); | |
| 226 ep->value = p; | |
| 227 ep->next = file_stack; | |
| 228 file_stack = ep; | |
| 229 p->tweaking = 1; | |
| 230 } | |
| 231 | |
| 232 static file * | |
| 233 file_pop (void) | |
| 234 { | |
| 235 struct file_stack_entry *ep = file_stack; | |
| 236 file *p; | |
| 237 if (ep == NULL) | |
| 238 return NULL; | |
| 239 p = ep->value; | |
| 240 file_stack = ep->next; | |
| 241 obstack_free (&file_stack_obstack, ep); | |
| 242 p->tweaking = 0; | |
| 243 return p; | |
| 244 } | |
| 245 | |
| 246 /* Other machinery. */ | |
| 247 | |
| 248 /* Initialize the tlink machinery. Called from do_tlink. */ | |
| 249 | |
| 250 static void | |
| 251 tlink_init (void) | |
| 252 { | |
| 253 const char *p; | |
| 254 | |
| 255 symbol_table = htab_create (500, hash_string_hash, hash_string_eq, | |
| 256 NULL); | |
| 257 file_table = htab_create (500, hash_string_hash, hash_string_eq, | |
| 258 NULL); | |
| 259 demangled_table = htab_create (500, hash_string_hash, hash_string_eq, | |
| 260 NULL); | |
| 261 | |
| 262 obstack_begin (&symbol_stack_obstack, 0); | |
| 263 obstack_begin (&file_stack_obstack, 0); | |
| 264 | |
| 265 p = getenv ("TLINK_VERBOSE"); | |
| 266 if (p) | |
| 267 tlink_verbose = atoi (p); | |
| 268 else | |
| 269 { | |
| 270 tlink_verbose = 1; | |
| 271 if (vflag) | |
| 272 tlink_verbose = 2; | |
| 273 if (debug) | |
| 274 tlink_verbose = 3; | |
| 275 } | |
| 276 | |
| 277 initial_cwd = getpwd (); | |
| 278 } | |
| 279 | |
| 280 static int | |
| 281 tlink_execute (const char *prog, char **argv, const char *outname, | |
| 282 const char *errname) | |
| 283 { | |
| 284 struct pex_obj *pex; | |
| 285 | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
286 pex = collect_execute (prog, argv, outname, errname, PEX_LAST | PEX_SEARCH); |
| 0 | 287 return collect_wait (prog, pex); |
| 288 } | |
| 289 | |
| 290 static char * | |
| 291 frob_extension (const char *s, const char *ext) | |
| 292 { | |
| 293 const char *p = strrchr (s, '/'); | |
| 294 if (! p) | |
| 295 p = s; | |
| 296 p = strrchr (p, '.'); | |
| 297 if (! p) | |
| 298 p = s + strlen (s); | |
| 299 | |
| 300 obstack_grow (&temporary_obstack, s, p - s); | |
| 301 return (char *) obstack_copy0 (&temporary_obstack, ext, strlen (ext)); | |
| 302 } | |
| 303 | |
| 304 static char * | |
| 305 obstack_fgets (FILE *stream, struct obstack *ob) | |
| 306 { | |
| 307 int c; | |
| 308 while ((c = getc (stream)) != EOF && c != '\n') | |
| 309 obstack_1grow (ob, c); | |
| 310 if (obstack_object_size (ob) == 0) | |
| 311 return NULL; | |
| 312 obstack_1grow (ob, '\0'); | |
| 313 return XOBFINISH (ob, char *); | |
| 314 } | |
| 315 | |
| 316 static char * | |
| 317 tfgets (FILE *stream) | |
| 318 { | |
| 319 return obstack_fgets (stream, &temporary_obstack); | |
| 320 } | |
| 321 | |
| 322 static char * | |
| 323 pfgets (FILE *stream) | |
| 324 { | |
| 325 return xstrdup (tfgets (stream)); | |
| 326 } | |
| 327 | |
| 328 /* Real tlink code. */ | |
| 329 | |
| 330 /* Subroutine of read_repo_file. We are reading the repo file for file F, | |
| 331 which is coming in on STREAM, and the symbol that comes next in STREAM | |
| 332 is offered, chosen or provided if CHOSEN is 0, 1 or 2, respectively. | |
| 333 | |
| 334 XXX "provided" is unimplemented, both here and in the compiler. */ | |
| 335 | |
| 336 static void | |
| 337 freadsym (FILE *stream, file *f, int chosen) | |
| 338 { | |
| 339 symbol *sym; | |
| 340 | |
| 341 { | |
| 342 const char *name = tfgets (stream); | |
| 343 sym = symbol_hash_lookup (name, true); | |
| 344 } | |
| 345 | |
| 346 if (sym->file == NULL) | |
| 347 { | |
| 348 /* We didn't have this symbol already, so we choose this file. */ | |
| 349 | |
| 350 symbol_push (sym); | |
| 351 sym->file = f; | |
| 352 sym->chosen = chosen; | |
| 353 } | |
| 354 else if (chosen) | |
| 355 { | |
| 356 /* We want this file; cast aside any pretender. */ | |
| 357 | |
| 358 if (sym->chosen && sym->file != f) | |
| 359 { | |
| 360 if (sym->chosen == 1) | |
| 361 file_push (sym->file); | |
| 362 else | |
| 363 { | |
| 364 file_push (f); | |
| 365 f = sym->file; | |
| 366 chosen = sym->chosen; | |
| 367 } | |
| 368 } | |
| 369 sym->file = f; | |
| 370 sym->chosen = chosen; | |
| 371 } | |
| 372 } | |
| 373 | |
| 374 /* Read in the repo file denoted by F, and record all its information. */ | |
| 375 | |
| 376 static void | |
| 377 read_repo_file (file *f) | |
| 378 { | |
| 379 char c; | |
| 380 FILE *stream = fopen (f->key, "r"); | |
| 381 | |
| 382 if (tlink_verbose >= 2) | |
| 383 fprintf (stderr, _("collect: reading %s\n"), f->key); | |
| 384 | |
| 385 while (fscanf (stream, "%c ", &c) == 1) | |
| 386 { | |
| 387 switch (c) | |
| 388 { | |
| 389 case 'A': | |
| 390 f->args = pfgets (stream); | |
| 391 break; | |
| 392 case 'D': | |
| 393 f->dir = pfgets (stream); | |
| 394 break; | |
| 395 case 'M': | |
| 396 f->main = pfgets (stream); | |
| 397 break; | |
| 398 case 'P': | |
| 399 freadsym (stream, f, 2); | |
| 400 break; | |
| 401 case 'C': | |
| 402 freadsym (stream, f, 1); | |
| 403 break; | |
| 404 case 'O': | |
| 405 freadsym (stream, f, 0); | |
| 406 break; | |
| 407 } | |
| 408 obstack_free (&temporary_obstack, temporary_firstobj); | |
| 409 } | |
| 410 fclose (stream); | |
| 411 if (f->args == NULL) | |
| 412 f->args = getenv ("COLLECT_GCC_OPTIONS"); | |
| 413 if (f->dir == NULL) | |
| 414 f->dir = "."; | |
| 415 } | |
| 416 | |
| 417 /* We might want to modify LINE, which is a symbol line from file F. We do | |
| 418 this if either we saw an error message referring to the symbol in | |
| 419 question, or we have already allocated the symbol to another file and | |
| 420 this one wants to emit it as well. */ | |
| 421 | |
| 422 static void | |
| 423 maybe_tweak (char *line, file *f) | |
| 424 { | |
| 425 symbol *sym = symbol_hash_lookup (line + 2, false); | |
| 426 | |
| 427 if ((sym->file == f && sym->tweaking) | |
| 428 || (sym->file != f && line[0] == 'C')) | |
| 429 { | |
| 430 sym->tweaking = 0; | |
| 431 sym->tweaked = 1; | |
| 432 | |
| 433 if (line[0] == 'O') | |
| 434 line[0] = 'C'; | |
| 435 else | |
| 436 line[0] = 'O'; | |
| 437 } | |
| 438 } | |
| 439 | |
| 440 /* Update the repo files for each of the object files we have adjusted and | |
| 441 recompile. */ | |
| 442 | |
| 443 static int | |
| 444 recompile_files (void) | |
| 445 { | |
| 446 file *f; | |
| 447 | |
| 448 putenv (xstrdup ("COMPILER_PATH=")); | |
| 449 putenv (xstrdup ("LIBRARY_PATH=")); | |
| 450 | |
| 451 while ((f = file_pop ()) != NULL) | |
| 452 { | |
| 453 char *line; | |
| 454 const char *p, *q; | |
| 455 char **argv; | |
| 456 struct obstack arg_stack; | |
| 457 FILE *stream = fopen (f->key, "r"); | |
| 458 const char *const outname = frob_extension (f->key, ".rnw"); | |
| 459 FILE *output = fopen (outname, "w"); | |
| 460 | |
| 461 while ((line = tfgets (stream)) != NULL) | |
| 462 { | |
| 463 switch (line[0]) | |
| 464 { | |
| 465 case 'C': | |
| 466 case 'O': | |
| 467 maybe_tweak (line, f); | |
| 468 } | |
| 469 fprintf (output, "%s\n", line); | |
| 470 } | |
| 471 fclose (stream); | |
| 472 fclose (output); | |
| 473 /* On Windows "rename" returns -1 and sets ERRNO to EACCESS if | |
| 474 the new file name already exists. Therefore, we explicitly | |
| 475 remove the old file first. */ | |
| 476 if (remove (f->key) == -1) | |
| 477 fatal_perror ("removing .rpo file"); | |
| 478 if (rename (outname, f->key) == -1) | |
| 479 fatal_perror ("renaming .rpo file"); | |
| 480 | |
| 481 if (!f->args) | |
| 482 { | |
| 483 error ("repository file '%s' does not contain command-line " | |
| 484 "arguments", f->key); | |
| 485 return 0; | |
| 486 } | |
| 487 | |
| 488 /* Build a null-terminated argv array suitable for | |
| 489 tlink_execute(). Manipulate arguments on the arg_stack while | |
| 490 building argv on the temporary_obstack. */ | |
| 491 | |
| 492 obstack_init (&arg_stack); | |
| 493 obstack_ptr_grow (&temporary_obstack, c_file_name); | |
| 494 | |
| 495 for (p = f->args; *p != '\0'; p = q + 1) | |
| 496 { | |
| 497 /* Arguments are delimited by single-quotes. Find the | |
| 498 opening quote. */ | |
| 499 p = strchr (p, '\''); | |
| 500 if (!p) | |
| 501 goto done; | |
| 502 | |
| 503 /* Find the closing quote. */ | |
| 504 q = strchr (p + 1, '\''); | |
| 505 if (!q) | |
| 506 goto done; | |
| 507 | |
| 508 obstack_grow (&arg_stack, p + 1, q - (p + 1)); | |
| 509 | |
| 510 /* Replace '\'' with '. This is how set_collect_gcc_options | |
| 511 encodes a single-quote. */ | |
| 512 while (q[1] == '\\' && q[2] == '\'' && q[3] == '\'') | |
| 513 { | |
| 514 const char *r; | |
| 515 | |
| 516 r = strchr (q + 4, '\''); | |
| 517 if (!r) | |
| 518 goto done; | |
| 519 | |
| 520 obstack_grow (&arg_stack, q + 3, r - (q + 3)); | |
| 521 q = r; | |
| 522 } | |
| 523 | |
| 524 obstack_1grow (&arg_stack, '\0'); | |
| 525 obstack_ptr_grow (&temporary_obstack, obstack_finish (&arg_stack)); | |
| 526 } | |
| 527 done: | |
| 528 obstack_ptr_grow (&temporary_obstack, f->main); | |
| 529 obstack_ptr_grow (&temporary_obstack, NULL); | |
| 530 argv = XOBFINISH (&temporary_obstack, char **); | |
| 531 | |
| 532 if (tlink_verbose) | |
| 533 fprintf (stderr, _("collect: recompiling %s\n"), f->main); | |
| 534 | |
| 535 if (chdir (f->dir) != 0 | |
| 536 || tlink_execute (c_file_name, argv, NULL, NULL) != 0 | |
| 537 || chdir (initial_cwd) != 0) | |
| 538 return 0; | |
| 539 | |
| 540 read_repo_file (f); | |
| 541 | |
| 542 obstack_free (&arg_stack, NULL); | |
| 543 obstack_free (&temporary_obstack, temporary_firstobj); | |
| 544 } | |
| 545 return 1; | |
| 546 } | |
| 547 | |
| 548 /* The first phase of processing: determine which object files have | |
| 549 .rpo files associated with them, and read in the information. */ | |
| 550 | |
| 551 static int | |
| 552 read_repo_files (char **object_lst) | |
| 553 { | |
| 554 char **object = object_lst; | |
| 555 | |
| 556 for (; *object; object++) | |
| 557 { | |
| 558 const char *p; | |
| 559 file *f; | |
| 560 | |
| 561 /* Don't bother trying for ld flags. */ | |
| 562 if (*object[0] == '-') | |
| 563 continue; | |
| 564 | |
| 565 p = frob_extension (*object, ".rpo"); | |
| 566 | |
| 567 if (! file_exists (p)) | |
| 568 continue; | |
| 569 | |
| 570 f = file_hash_lookup (p); | |
| 571 | |
| 572 read_repo_file (f); | |
| 573 } | |
| 574 | |
| 575 if (file_stack != NULL && ! recompile_files ()) | |
| 576 return 0; | |
| 577 | |
| 578 return (symbol_stack != NULL); | |
| 579 } | |
| 580 | |
| 581 /* Add the demangled forms of any new symbols to the hash table. */ | |
| 582 | |
| 583 static void | |
| 584 demangle_new_symbols (void) | |
| 585 { | |
| 586 symbol *sym; | |
| 587 | |
| 588 while ((sym = symbol_pop ()) != NULL) | |
| 589 { | |
| 590 demangled *dem; | |
| 591 const char *p = cplus_demangle (sym->key, DMGL_PARAMS | DMGL_ANSI); | |
| 592 | |
| 593 if (! p) | |
| 594 continue; | |
| 595 | |
| 596 dem = demangled_hash_lookup (p, true); | |
| 597 dem->mangled = sym->key; | |
| 598 } | |
| 599 } | |
| 600 | |
| 601 /* Step through the output of the linker, in the file named FNAME, and | |
| 602 adjust the settings for each symbol encountered. */ | |
| 603 | |
| 604 static int | |
| 605 scan_linker_output (const char *fname) | |
| 606 { | |
| 607 FILE *stream = fopen (fname, "r"); | |
| 608 char *line; | |
| 609 int skip_next_in_line = 0; | |
| 610 | |
| 611 while ((line = tfgets (stream)) != NULL) | |
| 612 { | |
| 613 char *p = line, *q; | |
| 614 symbol *sym; | |
| 615 int end; | |
| 616 int ok = 0; | |
| 617 | |
| 618 /* On darwin9, we might have to skip " in " lines as well. */ | |
| 619 if (skip_next_in_line | |
| 620 && strstr (p, " in ")) | |
| 621 continue; | |
| 622 skip_next_in_line = 0; | |
| 623 | |
| 624 while (*p && ISSPACE ((unsigned char) *p)) | |
| 625 ++p; | |
| 626 | |
| 627 if (! *p) | |
| 628 continue; | |
| 629 | |
| 630 for (q = p; *q && ! ISSPACE ((unsigned char) *q); ++q) | |
| 631 ; | |
| 632 | |
| 633 /* Try the first word on the line. */ | |
| 634 if (*p == '.') | |
| 635 ++p; | |
| 636 if (!strncmp (p, USER_LABEL_PREFIX, strlen (USER_LABEL_PREFIX))) | |
| 637 p += strlen (USER_LABEL_PREFIX); | |
| 638 | |
| 639 end = ! *q; | |
| 640 *q = 0; | |
| 641 sym = symbol_hash_lookup (p, false); | |
| 642 | |
| 643 /* Some SVR4 linkers produce messages like | |
| 644 ld: 0711-317 ERROR: Undefined symbol: .g__t3foo1Zi | |
| 645 */ | |
| 646 if (! sym && ! end && strstr (q + 1, "Undefined symbol: ")) | |
| 647 { | |
| 648 char *p = strrchr (q + 1, ' '); | |
| 649 p++; | |
| 650 if (*p == '.') | |
| 651 p++; | |
| 652 if (!strncmp (p, USER_LABEL_PREFIX, strlen (USER_LABEL_PREFIX))) | |
| 653 p += strlen (USER_LABEL_PREFIX); | |
| 654 sym = symbol_hash_lookup (p, false); | |
| 655 } | |
| 656 | |
| 657 if (! sym && ! end) | |
| 658 /* Try a mangled name in quotes. */ | |
| 659 { | |
| 660 char *oldq = q + 1; | |
| 661 demangled *dem = 0; | |
| 662 q = 0; | |
| 663 | |
| 664 /* On darwin9, we look for "foo" referenced from:\n\(.* in .*\n\)* */ | |
| 665 if (strcmp (oldq, "referenced from:") == 0) | |
| 666 { | |
| 667 /* We have to remember that we found a symbol to tweak. */ | |
| 668 ok = 1; | |
| 669 | |
| 670 /* We actually want to start from the first word on the | |
| 671 line. */ | |
| 672 oldq = p; | |
| 673 | |
| 674 /* Since the format is multiline, we have to skip | |
| 675 following lines with " in ". */ | |
| 676 skip_next_in_line = 1; | |
| 677 } | |
| 678 | |
| 679 /* First try `GNU style'. */ | |
| 680 p = strchr (oldq, '`'); | |
| 681 if (p) | |
| 682 p++, q = strchr (p, '\''); | |
| 683 /* Then try "double quotes". */ | |
| 684 else if (p = strchr (oldq, '"'), p) | |
| 685 p++, q = strchr (p, '"'); | |
| 686 /* Then try 'single quotes'. */ | |
| 687 else if (p = strchr (oldq, '\''), p) | |
| 688 p++, q = strchr (p, '\''); | |
| 689 else { | |
| 690 /* Then try entire line. */ | |
| 691 q = strchr (oldq, 0); | |
| 692 if (q != oldq) | |
| 693 p = (char *)oldq; | |
| 694 } | |
| 695 | |
| 696 if (p) | |
| 697 { | |
| 698 /* Don't let the strstr's below see the demangled name; we | |
| 699 might get spurious matches. */ | |
| 700 p[-1] = '\0'; | |
| 701 | |
| 702 /* powerpc64-linux references .foo when calling function foo. */ | |
| 703 if (*p == '.') | |
| 704 p++; | |
| 705 } | |
| 706 | |
| 707 /* We need to check for certain error keywords here, or we would | |
| 708 mistakenly use GNU ld's "In function `foo':" message. */ | |
| 709 if (q && (ok | |
| 710 || strstr (oldq, "ndefined") | |
| 711 || strstr (oldq, "nresolved") | |
| 712 || strstr (oldq, "nsatisfied") | |
| 713 || strstr (oldq, "ultiple"))) | |
| 714 { | |
| 715 *q = 0; | |
| 716 dem = demangled_hash_lookup (p, false); | |
| 717 if (dem) | |
| 718 sym = symbol_hash_lookup (dem->mangled, false); | |
| 719 else | |
| 720 { | |
| 721 if (!strncmp (p, USER_LABEL_PREFIX, | |
| 722 strlen (USER_LABEL_PREFIX))) | |
| 723 p += strlen (USER_LABEL_PREFIX); | |
| 724 sym = symbol_hash_lookup (p, false); | |
| 725 } | |
| 726 } | |
| 727 } | |
| 728 | |
| 729 if (sym && sym->tweaked) | |
| 730 { | |
| 731 error ("'%s' was assigned to '%s', but was not defined " | |
|
55
77e2b8dfacca
update it from 4.4.3 to 4.5.0
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
0
diff
changeset
|
732 "during recompilation, or vice versa", |
| 0 | 733 sym->key, sym->file->key); |
| 734 fclose (stream); | |
| 735 return 0; | |
| 736 } | |
| 737 if (sym && !sym->tweaking) | |
| 738 { | |
| 739 if (tlink_verbose >= 2) | |
| 740 fprintf (stderr, _("collect: tweaking %s in %s\n"), | |
| 741 sym->key, sym->file->key); | |
| 742 sym->tweaking = 1; | |
| 743 file_push (sym->file); | |
| 744 } | |
| 745 | |
| 746 obstack_free (&temporary_obstack, temporary_firstobj); | |
| 747 } | |
| 748 | |
| 749 fclose (stream); | |
| 750 return (file_stack != NULL); | |
| 751 } | |
| 752 | |
| 753 /* Entry point for tlink. Called from main in collect2.c. | |
| 754 | |
| 755 Iteratively try to provide definitions for all the unresolved symbols | |
| 756 mentioned in the linker error messages. | |
| 757 | |
| 758 LD_ARGV is an array of arguments for the linker. | |
| 759 OBJECT_LST is an array of object files that we may be able to recompile | |
| 760 to provide missing definitions. Currently ignored. */ | |
| 761 | |
| 762 void | |
| 763 do_tlink (char **ld_argv, char **object_lst ATTRIBUTE_UNUSED) | |
| 764 { | |
| 765 int exit = tlink_execute ("ld", ld_argv, ldout, lderrout); | |
| 766 | |
| 767 tlink_init (); | |
| 768 | |
| 769 if (exit) | |
| 770 { | |
| 771 int i = 0; | |
| 772 | |
| 773 /* Until collect does a better job of figuring out which are object | |
| 774 files, assume that everything on the command line could be. */ | |
| 775 if (read_repo_files (ld_argv)) | |
| 776 while (exit && i++ < MAX_ITERATIONS) | |
| 777 { | |
| 778 if (tlink_verbose >= 3) | |
| 779 { | |
| 780 dump_file (ldout, stdout); | |
| 781 dump_file (lderrout, stderr); | |
| 782 } | |
| 783 demangle_new_symbols (); | |
| 784 if (! scan_linker_output (ldout) | |
| 785 && ! scan_linker_output (lderrout)) | |
| 786 break; | |
| 787 if (! recompile_files ()) | |
| 788 break; | |
| 789 if (tlink_verbose) | |
| 790 fprintf (stderr, _("collect: relinking\n")); | |
| 791 exit = tlink_execute ("ld", ld_argv, ldout, lderrout); | |
| 792 } | |
| 793 } | |
| 794 | |
| 795 dump_file (ldout, stdout); | |
| 796 unlink (ldout); | |
| 797 dump_file (lderrout, stderr); | |
| 798 unlink (lderrout); | |
| 799 if (exit) | |
| 800 { | |
| 801 error ("ld returned %d exit status", exit); | |
| 802 collect_exit (exit); | |
| 803 } | |
| 804 } |