Mercurial > hg > CbC > CbC_gcc
annotate gcc/tlink.c @ 67:f6334be47118
update gcc from gcc-4.6-20100522 to gcc-4.6-20110318
| author | nobuyasu <dimolto@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Tue, 22 Mar 2011 17:18:12 +0900 |
| parents | b7f97abdc517 |
| children | 04ced10e8804 |
| rev | line source |
|---|---|
| 0 | 1 /* Scan linker error messages for missing template instantiations and provide |
| 2 them. | |
| 3 | |
|
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
|
4 Copyright (C) 1995, 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2007, 2008, |
|
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
|
5 2009, 2010 Free Software Foundation, Inc. |
| 0 | 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 | |
|
63
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update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
55
diff
changeset
|
34 /* TARGET_64BIT may be defined to use driver specific functionality. */ |
|
b7f97abdc517
update gcc from gcc-4.5.0 to gcc-4.6
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parents:
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changeset
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35 #undef TARGET_64BIT |
|
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update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
36 #define TARGET_64BIT TARGET_64BIT_DEFAULT |
|
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update gcc from gcc-4.5.0 to gcc-4.6
ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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changeset
|
37 |
| 0 | 38 #define MAX_ITERATIONS 17 |
| 39 | |
| 40 /* Defined in the automatically-generated underscore.c. */ | |
| 41 extern int prepends_underscore; | |
| 42 | |
| 43 static int tlink_verbose; | |
| 44 | |
| 45 static char *initial_cwd; | |
| 46 | |
| 47 /* Hash table boilerplate for working with htab_t. We have hash tables | |
| 48 for symbol names, file names, and demangled symbols. */ | |
| 49 | |
| 50 typedef struct symbol_hash_entry | |
| 51 { | |
| 52 const char *key; | |
| 53 struct file_hash_entry *file; | |
| 54 int chosen; | |
| 55 int tweaking; | |
| 56 int tweaked; | |
| 57 } symbol; | |
| 58 | |
| 59 typedef struct file_hash_entry | |
| 60 { | |
| 61 const char *key; | |
| 62 const char *args; | |
| 63 const char *dir; | |
| 64 const char *main; | |
| 65 int tweaking; | |
| 66 } file; | |
| 67 | |
| 68 typedef struct demangled_hash_entry | |
| 69 { | |
| 70 const char *key; | |
| 71 const char *mangled; | |
| 72 } demangled; | |
| 73 | |
| 74 /* Hash and comparison functions for these hash tables. */ | |
| 75 | |
| 76 static int hash_string_eq (const void *, const void *); | |
| 77 static hashval_t hash_string_hash (const void *); | |
| 78 | |
| 79 static int | |
| 80 hash_string_eq (const void *s1_p, const void *s2_p) | |
| 81 { | |
| 82 const char *const *s1 = (const char *const *) s1_p; | |
| 83 const char *s2 = (const char *) s2_p; | |
| 84 return strcmp (*s1, s2) == 0; | |
| 85 } | |
| 86 | |
| 87 static hashval_t | |
| 88 hash_string_hash (const void *s_p) | |
| 89 { | |
| 90 const char *const *s = (const char *const *) s_p; | |
| 91 return (*htab_hash_string) (*s); | |
| 92 } | |
| 93 | |
| 94 static htab_t symbol_table; | |
| 95 | |
| 96 static struct symbol_hash_entry * symbol_hash_lookup (const char *, int); | |
| 97 static struct file_hash_entry * file_hash_lookup (const char *); | |
| 98 static struct demangled_hash_entry *demangled_hash_lookup (const char *, int); | |
| 99 static void symbol_push (symbol *); | |
| 100 static symbol * symbol_pop (void); | |
| 101 static void file_push (file *); | |
| 102 static file * file_pop (void); | |
| 103 static void tlink_init (void); | |
| 104 static int tlink_execute (const char *, char **, const char *, const char *); | |
| 105 static char * frob_extension (const char *, const char *); | |
| 106 static char * obstack_fgets (FILE *, struct obstack *); | |
| 107 static char * tfgets (FILE *); | |
| 108 static char * pfgets (FILE *); | |
| 109 static void freadsym (FILE *, file *, int); | |
| 110 static void read_repo_file (file *); | |
| 111 static void maybe_tweak (char *, file *); | |
| 112 static int recompile_files (void); | |
| 113 static int read_repo_files (char **); | |
| 114 static void demangle_new_symbols (void); | |
| 115 static int scan_linker_output (const char *); | |
| 116 | |
| 117 /* Look up an entry in the symbol hash table. */ | |
| 118 | |
| 119 static struct symbol_hash_entry * | |
| 120 symbol_hash_lookup (const char *string, int create) | |
| 121 { | |
| 122 void **e; | |
| 123 e = htab_find_slot_with_hash (symbol_table, string, | |
| 124 (*htab_hash_string) (string), | |
| 125 create ? INSERT : NO_INSERT); | |
| 126 if (e == NULL) | |
| 127 return NULL; | |
| 128 if (*e == NULL) | |
| 129 { | |
| 130 struct symbol_hash_entry *v; | |
| 131 *e = v = XCNEW (struct symbol_hash_entry); | |
| 132 v->key = xstrdup (string); | |
| 133 } | |
| 134 return (struct symbol_hash_entry *) *e; | |
| 135 } | |
| 136 | |
| 137 static htab_t file_table; | |
| 138 | |
| 139 /* Look up an entry in the file hash table. */ | |
| 140 | |
| 141 static struct file_hash_entry * | |
| 142 file_hash_lookup (const char *string) | |
| 143 { | |
| 144 void **e; | |
| 145 e = htab_find_slot_with_hash (file_table, string, | |
| 146 (*htab_hash_string) (string), | |
| 147 INSERT); | |
| 148 if (*e == NULL) | |
| 149 { | |
| 150 struct file_hash_entry *v; | |
| 151 *e = v = XCNEW (struct file_hash_entry); | |
| 152 v->key = xstrdup (string); | |
| 153 } | |
| 154 return (struct file_hash_entry *) *e; | |
| 155 } | |
| 156 | |
| 157 static htab_t demangled_table; | |
| 158 | |
| 159 /* Look up an entry in the demangled name hash table. */ | |
| 160 | |
| 161 static struct demangled_hash_entry * | |
| 162 demangled_hash_lookup (const char *string, int create) | |
| 163 { | |
| 164 void **e; | |
| 165 e = htab_find_slot_with_hash (demangled_table, string, | |
| 166 (*htab_hash_string) (string), | |
| 167 create ? INSERT : NO_INSERT); | |
| 168 if (e == NULL) | |
| 169 return NULL; | |
| 170 if (*e == NULL) | |
| 171 { | |
| 172 struct demangled_hash_entry *v; | |
| 173 *e = v = XCNEW (struct demangled_hash_entry); | |
| 174 v->key = xstrdup (string); | |
| 175 } | |
| 176 return (struct demangled_hash_entry *) *e; | |
| 177 } | |
| 178 | |
| 179 /* Stack code. */ | |
| 180 | |
| 181 struct symbol_stack_entry | |
| 182 { | |
| 183 symbol *value; | |
| 184 struct symbol_stack_entry *next; | |
| 185 }; | |
| 186 struct obstack symbol_stack_obstack; | |
| 187 struct symbol_stack_entry *symbol_stack; | |
| 188 | |
| 189 struct file_stack_entry | |
| 190 { | |
| 191 file *value; | |
| 192 struct file_stack_entry *next; | |
| 193 }; | |
| 194 struct obstack file_stack_obstack; | |
| 195 struct file_stack_entry *file_stack; | |
| 196 | |
| 197 static void | |
| 198 symbol_push (symbol *p) | |
| 199 { | |
| 200 struct symbol_stack_entry *ep | |
| 201 = XOBNEW (&symbol_stack_obstack, struct symbol_stack_entry); | |
| 202 ep->value = p; | |
| 203 ep->next = symbol_stack; | |
| 204 symbol_stack = ep; | |
| 205 } | |
| 206 | |
| 207 static symbol * | |
| 208 symbol_pop (void) | |
| 209 { | |
| 210 struct symbol_stack_entry *ep = symbol_stack; | |
| 211 symbol *p; | |
| 212 if (ep == NULL) | |
| 213 return NULL; | |
| 214 p = ep->value; | |
| 215 symbol_stack = ep->next; | |
| 216 obstack_free (&symbol_stack_obstack, ep); | |
| 217 return p; | |
| 218 } | |
| 219 | |
| 220 static void | |
| 221 file_push (file *p) | |
| 222 { | |
| 223 struct file_stack_entry *ep; | |
| 224 | |
| 225 if (p->tweaking) | |
| 226 return; | |
| 227 | |
| 228 ep = XOBNEW (&file_stack_obstack, struct file_stack_entry); | |
| 229 ep->value = p; | |
| 230 ep->next = file_stack; | |
| 231 file_stack = ep; | |
| 232 p->tweaking = 1; | |
| 233 } | |
| 234 | |
| 235 static file * | |
| 236 file_pop (void) | |
| 237 { | |
| 238 struct file_stack_entry *ep = file_stack; | |
| 239 file *p; | |
| 240 if (ep == NULL) | |
| 241 return NULL; | |
| 242 p = ep->value; | |
| 243 file_stack = ep->next; | |
| 244 obstack_free (&file_stack_obstack, ep); | |
| 245 p->tweaking = 0; | |
| 246 return p; | |
| 247 } | |
| 248 | |
| 249 /* Other machinery. */ | |
| 250 | |
| 251 /* Initialize the tlink machinery. Called from do_tlink. */ | |
| 252 | |
| 253 static void | |
| 254 tlink_init (void) | |
| 255 { | |
| 256 const char *p; | |
| 257 | |
| 258 symbol_table = htab_create (500, hash_string_hash, hash_string_eq, | |
| 259 NULL); | |
| 260 file_table = htab_create (500, hash_string_hash, hash_string_eq, | |
| 261 NULL); | |
| 262 demangled_table = htab_create (500, hash_string_hash, hash_string_eq, | |
| 263 NULL); | |
| 264 | |
| 265 obstack_begin (&symbol_stack_obstack, 0); | |
| 266 obstack_begin (&file_stack_obstack, 0); | |
| 267 | |
| 268 p = getenv ("TLINK_VERBOSE"); | |
| 269 if (p) | |
| 270 tlink_verbose = atoi (p); | |
| 271 else | |
| 272 { | |
| 273 tlink_verbose = 1; | |
| 274 if (vflag) | |
| 275 tlink_verbose = 2; | |
| 276 if (debug) | |
| 277 tlink_verbose = 3; | |
| 278 } | |
| 279 | |
| 280 initial_cwd = getpwd (); | |
| 281 } | |
| 282 | |
| 283 static int | |
| 284 tlink_execute (const char *prog, char **argv, const char *outname, | |
| 285 const char *errname) | |
| 286 { | |
| 287 struct pex_obj *pex; | |
| 288 | |
|
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ryoma <e075725@ie.u-ryukyu.ac.jp>
parents:
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diff
changeset
|
289 pex = collect_execute (prog, argv, outname, errname, PEX_LAST | PEX_SEARCH); |
| 0 | 290 return collect_wait (prog, pex); |
| 291 } | |
| 292 | |
| 293 static char * | |
| 294 frob_extension (const char *s, const char *ext) | |
| 295 { | |
| 296 const char *p = strrchr (s, '/'); | |
| 297 if (! p) | |
| 298 p = s; | |
| 299 p = strrchr (p, '.'); | |
| 300 if (! p) | |
| 301 p = s + strlen (s); | |
| 302 | |
| 303 obstack_grow (&temporary_obstack, s, p - s); | |
| 304 return (char *) obstack_copy0 (&temporary_obstack, ext, strlen (ext)); | |
| 305 } | |
| 306 | |
| 307 static char * | |
| 308 obstack_fgets (FILE *stream, struct obstack *ob) | |
| 309 { | |
| 310 int c; | |
| 311 while ((c = getc (stream)) != EOF && c != '\n') | |
| 312 obstack_1grow (ob, c); | |
| 313 if (obstack_object_size (ob) == 0) | |
| 314 return NULL; | |
| 315 obstack_1grow (ob, '\0'); | |
| 316 return XOBFINISH (ob, char *); | |
| 317 } | |
| 318 | |
| 319 static char * | |
| 320 tfgets (FILE *stream) | |
| 321 { | |
| 322 return obstack_fgets (stream, &temporary_obstack); | |
| 323 } | |
| 324 | |
| 325 static char * | |
| 326 pfgets (FILE *stream) | |
| 327 { | |
| 328 return xstrdup (tfgets (stream)); | |
| 329 } | |
| 330 | |
| 331 /* Real tlink code. */ | |
| 332 | |
| 333 /* Subroutine of read_repo_file. We are reading the repo file for file F, | |
| 334 which is coming in on STREAM, and the symbol that comes next in STREAM | |
| 335 is offered, chosen or provided if CHOSEN is 0, 1 or 2, respectively. | |
| 336 | |
| 337 XXX "provided" is unimplemented, both here and in the compiler. */ | |
| 338 | |
| 339 static void | |
| 340 freadsym (FILE *stream, file *f, int chosen) | |
| 341 { | |
| 342 symbol *sym; | |
| 343 | |
| 344 { | |
| 345 const char *name = tfgets (stream); | |
| 346 sym = symbol_hash_lookup (name, true); | |
| 347 } | |
| 348 | |
| 349 if (sym->file == NULL) | |
| 350 { | |
| 351 /* We didn't have this symbol already, so we choose this file. */ | |
| 352 | |
| 353 symbol_push (sym); | |
| 354 sym->file = f; | |
| 355 sym->chosen = chosen; | |
| 356 } | |
| 357 else if (chosen) | |
| 358 { | |
| 359 /* We want this file; cast aside any pretender. */ | |
| 360 | |
| 361 if (sym->chosen && sym->file != f) | |
| 362 { | |
| 363 if (sym->chosen == 1) | |
| 364 file_push (sym->file); | |
| 365 else | |
| 366 { | |
| 367 file_push (f); | |
| 368 f = sym->file; | |
| 369 chosen = sym->chosen; | |
| 370 } | |
| 371 } | |
| 372 sym->file = f; | |
| 373 sym->chosen = chosen; | |
| 374 } | |
| 375 } | |
| 376 | |
| 377 /* Read in the repo file denoted by F, and record all its information. */ | |
| 378 | |
| 379 static void | |
| 380 read_repo_file (file *f) | |
| 381 { | |
| 382 char c; | |
| 383 FILE *stream = fopen (f->key, "r"); | |
| 384 | |
| 385 if (tlink_verbose >= 2) | |
| 386 fprintf (stderr, _("collect: reading %s\n"), f->key); | |
| 387 | |
| 388 while (fscanf (stream, "%c ", &c) == 1) | |
| 389 { | |
| 390 switch (c) | |
| 391 { | |
| 392 case 'A': | |
| 393 f->args = pfgets (stream); | |
| 394 break; | |
| 395 case 'D': | |
| 396 f->dir = pfgets (stream); | |
| 397 break; | |
| 398 case 'M': | |
| 399 f->main = pfgets (stream); | |
| 400 break; | |
| 401 case 'P': | |
| 402 freadsym (stream, f, 2); | |
| 403 break; | |
| 404 case 'C': | |
| 405 freadsym (stream, f, 1); | |
| 406 break; | |
| 407 case 'O': | |
| 408 freadsym (stream, f, 0); | |
| 409 break; | |
| 410 } | |
| 411 obstack_free (&temporary_obstack, temporary_firstobj); | |
| 412 } | |
| 413 fclose (stream); | |
| 414 if (f->args == NULL) | |
| 415 f->args = getenv ("COLLECT_GCC_OPTIONS"); | |
| 416 if (f->dir == NULL) | |
| 417 f->dir = "."; | |
| 418 } | |
| 419 | |
| 420 /* We might want to modify LINE, which is a symbol line from file F. We do | |
| 421 this if either we saw an error message referring to the symbol in | |
| 422 question, or we have already allocated the symbol to another file and | |
| 423 this one wants to emit it as well. */ | |
| 424 | |
| 425 static void | |
| 426 maybe_tweak (char *line, file *f) | |
| 427 { | |
| 428 symbol *sym = symbol_hash_lookup (line + 2, false); | |
| 429 | |
| 430 if ((sym->file == f && sym->tweaking) | |
| 431 || (sym->file != f && line[0] == 'C')) | |
| 432 { | |
| 433 sym->tweaking = 0; | |
| 434 sym->tweaked = 1; | |
| 435 | |
| 436 if (line[0] == 'O') | |
| 437 line[0] = 'C'; | |
| 438 else | |
| 439 line[0] = 'O'; | |
| 440 } | |
| 441 } | |
| 442 | |
| 443 /* Update the repo files for each of the object files we have adjusted and | |
| 444 recompile. */ | |
| 445 | |
| 446 static int | |
| 447 recompile_files (void) | |
| 448 { | |
| 449 file *f; | |
| 450 | |
| 451 putenv (xstrdup ("COMPILER_PATH=")); | |
| 452 putenv (xstrdup ("LIBRARY_PATH=")); | |
| 453 | |
| 454 while ((f = file_pop ()) != NULL) | |
| 455 { | |
| 456 char *line; | |
| 457 const char *p, *q; | |
| 458 char **argv; | |
| 459 struct obstack arg_stack; | |
| 460 FILE *stream = fopen (f->key, "r"); | |
| 461 const char *const outname = frob_extension (f->key, ".rnw"); | |
| 462 FILE *output = fopen (outname, "w"); | |
| 463 | |
| 464 while ((line = tfgets (stream)) != NULL) | |
| 465 { | |
| 466 switch (line[0]) | |
| 467 { | |
| 468 case 'C': | |
| 469 case 'O': | |
| 470 maybe_tweak (line, f); | |
| 471 } | |
| 472 fprintf (output, "%s\n", line); | |
| 473 } | |
| 474 fclose (stream); | |
| 475 fclose (output); | |
| 476 /* On Windows "rename" returns -1 and sets ERRNO to EACCESS if | |
| 477 the new file name already exists. Therefore, we explicitly | |
| 478 remove the old file first. */ | |
| 479 if (remove (f->key) == -1) | |
| 480 fatal_perror ("removing .rpo file"); | |
| 481 if (rename (outname, f->key) == -1) | |
| 482 fatal_perror ("renaming .rpo file"); | |
| 483 | |
| 484 if (!f->args) | |
| 485 { | |
| 486 error ("repository file '%s' does not contain command-line " | |
| 487 "arguments", f->key); | |
| 488 return 0; | |
| 489 } | |
| 490 | |
| 491 /* Build a null-terminated argv array suitable for | |
| 492 tlink_execute(). Manipulate arguments on the arg_stack while | |
| 493 building argv on the temporary_obstack. */ | |
| 494 | |
| 495 obstack_init (&arg_stack); | |
| 496 obstack_ptr_grow (&temporary_obstack, c_file_name); | |
| 497 | |
| 498 for (p = f->args; *p != '\0'; p = q + 1) | |
| 499 { | |
| 500 /* Arguments are delimited by single-quotes. Find the | |
| 501 opening quote. */ | |
| 502 p = strchr (p, '\''); | |
| 503 if (!p) | |
| 504 goto done; | |
| 505 | |
| 506 /* Find the closing quote. */ | |
| 507 q = strchr (p + 1, '\''); | |
| 508 if (!q) | |
| 509 goto done; | |
| 510 | |
| 511 obstack_grow (&arg_stack, p + 1, q - (p + 1)); | |
| 512 | |
| 513 /* Replace '\'' with '. This is how set_collect_gcc_options | |
| 514 encodes a single-quote. */ | |
| 515 while (q[1] == '\\' && q[2] == '\'' && q[3] == '\'') | |
| 516 { | |
| 517 const char *r; | |
| 518 | |
| 519 r = strchr (q + 4, '\''); | |
| 520 if (!r) | |
| 521 goto done; | |
| 522 | |
| 523 obstack_grow (&arg_stack, q + 3, r - (q + 3)); | |
| 524 q = r; | |
| 525 } | |
| 526 | |
| 527 obstack_1grow (&arg_stack, '\0'); | |
| 528 obstack_ptr_grow (&temporary_obstack, obstack_finish (&arg_stack)); | |
| 529 } | |
| 530 done: | |
| 531 obstack_ptr_grow (&temporary_obstack, f->main); | |
| 532 obstack_ptr_grow (&temporary_obstack, NULL); | |
| 533 argv = XOBFINISH (&temporary_obstack, char **); | |
| 534 | |
| 535 if (tlink_verbose) | |
| 536 fprintf (stderr, _("collect: recompiling %s\n"), f->main); | |
| 537 | |
| 538 if (chdir (f->dir) != 0 | |
| 539 || tlink_execute (c_file_name, argv, NULL, NULL) != 0 | |
| 540 || chdir (initial_cwd) != 0) | |
| 541 return 0; | |
| 542 | |
| 543 read_repo_file (f); | |
| 544 | |
| 545 obstack_free (&arg_stack, NULL); | |
| 546 obstack_free (&temporary_obstack, temporary_firstobj); | |
| 547 } | |
| 548 return 1; | |
| 549 } | |
| 550 | |
| 551 /* The first phase of processing: determine which object files have | |
| 552 .rpo files associated with them, and read in the information. */ | |
| 553 | |
| 554 static int | |
| 555 read_repo_files (char **object_lst) | |
| 556 { | |
| 557 char **object = object_lst; | |
| 558 | |
| 559 for (; *object; object++) | |
| 560 { | |
| 561 const char *p; | |
| 562 file *f; | |
| 563 | |
| 564 /* Don't bother trying for ld flags. */ | |
| 565 if (*object[0] == '-') | |
| 566 continue; | |
| 567 | |
| 568 p = frob_extension (*object, ".rpo"); | |
| 569 | |
| 570 if (! file_exists (p)) | |
| 571 continue; | |
| 572 | |
| 573 f = file_hash_lookup (p); | |
| 574 | |
| 575 read_repo_file (f); | |
| 576 } | |
| 577 | |
| 578 if (file_stack != NULL && ! recompile_files ()) | |
| 579 return 0; | |
| 580 | |
| 581 return (symbol_stack != NULL); | |
| 582 } | |
| 583 | |
| 584 /* Add the demangled forms of any new symbols to the hash table. */ | |
| 585 | |
| 586 static void | |
| 587 demangle_new_symbols (void) | |
| 588 { | |
| 589 symbol *sym; | |
| 590 | |
| 591 while ((sym = symbol_pop ()) != NULL) | |
| 592 { | |
| 593 demangled *dem; | |
| 594 const char *p = cplus_demangle (sym->key, DMGL_PARAMS | DMGL_ANSI); | |
| 595 | |
| 596 if (! p) | |
| 597 continue; | |
| 598 | |
| 599 dem = demangled_hash_lookup (p, true); | |
| 600 dem->mangled = sym->key; | |
| 601 } | |
| 602 } | |
| 603 | |
| 604 /* Step through the output of the linker, in the file named FNAME, and | |
| 605 adjust the settings for each symbol encountered. */ | |
| 606 | |
| 607 static int | |
| 608 scan_linker_output (const char *fname) | |
| 609 { | |
| 610 FILE *stream = fopen (fname, "r"); | |
| 611 char *line; | |
| 612 int skip_next_in_line = 0; | |
| 613 | |
| 614 while ((line = tfgets (stream)) != NULL) | |
| 615 { | |
| 616 char *p = line, *q; | |
| 617 symbol *sym; | |
| 618 int end; | |
| 619 int ok = 0; | |
| 620 | |
| 621 /* On darwin9, we might have to skip " in " lines as well. */ | |
| 622 if (skip_next_in_line | |
| 623 && strstr (p, " in ")) | |
| 624 continue; | |
| 625 skip_next_in_line = 0; | |
| 626 | |
| 627 while (*p && ISSPACE ((unsigned char) *p)) | |
| 628 ++p; | |
| 629 | |
| 630 if (! *p) | |
| 631 continue; | |
| 632 | |
| 633 for (q = p; *q && ! ISSPACE ((unsigned char) *q); ++q) | |
| 634 ; | |
| 635 | |
| 636 /* Try the first word on the line. */ | |
| 637 if (*p == '.') | |
| 638 ++p; | |
| 639 if (!strncmp (p, USER_LABEL_PREFIX, strlen (USER_LABEL_PREFIX))) | |
| 640 p += strlen (USER_LABEL_PREFIX); | |
| 641 | |
| 642 end = ! *q; | |
| 643 *q = 0; | |
| 644 sym = symbol_hash_lookup (p, false); | |
| 645 | |
| 646 /* Some SVR4 linkers produce messages like | |
| 647 ld: 0711-317 ERROR: Undefined symbol: .g__t3foo1Zi | |
| 648 */ | |
| 649 if (! sym && ! end && strstr (q + 1, "Undefined symbol: ")) | |
| 650 { | |
| 651 char *p = strrchr (q + 1, ' '); | |
| 652 p++; | |
| 653 if (*p == '.') | |
| 654 p++; | |
| 655 if (!strncmp (p, USER_LABEL_PREFIX, strlen (USER_LABEL_PREFIX))) | |
| 656 p += strlen (USER_LABEL_PREFIX); | |
| 657 sym = symbol_hash_lookup (p, false); | |
| 658 } | |
| 659 | |
| 660 if (! sym && ! end) | |
| 661 /* Try a mangled name in quotes. */ | |
| 662 { | |
| 663 char *oldq = q + 1; | |
| 664 demangled *dem = 0; | |
| 665 q = 0; | |
| 666 | |
| 667 /* On darwin9, we look for "foo" referenced from:\n\(.* in .*\n\)* */ | |
| 668 if (strcmp (oldq, "referenced from:") == 0) | |
| 669 { | |
| 670 /* We have to remember that we found a symbol to tweak. */ | |
| 671 ok = 1; | |
| 672 | |
| 673 /* We actually want to start from the first word on the | |
| 674 line. */ | |
| 675 oldq = p; | |
| 676 | |
| 677 /* Since the format is multiline, we have to skip | |
| 678 following lines with " in ". */ | |
| 679 skip_next_in_line = 1; | |
| 680 } | |
| 681 | |
| 682 /* First try `GNU style'. */ | |
| 683 p = strchr (oldq, '`'); | |
| 684 if (p) | |
| 685 p++, q = strchr (p, '\''); | |
| 686 /* Then try "double quotes". */ | |
| 687 else if (p = strchr (oldq, '"'), p) | |
| 688 p++, q = strchr (p, '"'); | |
| 689 /* Then try 'single quotes'. */ | |
| 690 else if (p = strchr (oldq, '\''), p) | |
| 691 p++, q = strchr (p, '\''); | |
| 692 else { | |
| 693 /* Then try entire line. */ | |
| 694 q = strchr (oldq, 0); | |
| 695 if (q != oldq) | |
| 696 p = (char *)oldq; | |
| 697 } | |
| 698 | |
| 699 if (p) | |
| 700 { | |
| 701 /* Don't let the strstr's below see the demangled name; we | |
| 702 might get spurious matches. */ | |
| 703 p[-1] = '\0'; | |
| 704 | |
| 705 /* powerpc64-linux references .foo when calling function foo. */ | |
| 706 if (*p == '.') | |
| 707 p++; | |
| 708 } | |
| 709 | |
| 710 /* We need to check for certain error keywords here, or we would | |
| 711 mistakenly use GNU ld's "In function `foo':" message. */ | |
| 712 if (q && (ok | |
| 713 || strstr (oldq, "ndefined") | |
| 714 || strstr (oldq, "nresolved") | |
| 715 || strstr (oldq, "nsatisfied") | |
| 716 || strstr (oldq, "ultiple"))) | |
| 717 { | |
| 718 *q = 0; | |
| 719 dem = demangled_hash_lookup (p, false); | |
| 720 if (dem) | |
| 721 sym = symbol_hash_lookup (dem->mangled, false); | |
| 722 else | |
| 723 { | |
| 724 if (!strncmp (p, USER_LABEL_PREFIX, | |
| 725 strlen (USER_LABEL_PREFIX))) | |
| 726 p += strlen (USER_LABEL_PREFIX); | |
| 727 sym = symbol_hash_lookup (p, false); | |
| 728 } | |
| 729 } | |
| 730 } | |
| 731 | |
| 732 if (sym && sym->tweaked) | |
| 733 { | |
| 734 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
|
735 "during recompilation, or vice versa", |
| 0 | 736 sym->key, sym->file->key); |
| 737 fclose (stream); | |
| 738 return 0; | |
| 739 } | |
| 740 if (sym && !sym->tweaking) | |
| 741 { | |
| 742 if (tlink_verbose >= 2) | |
| 743 fprintf (stderr, _("collect: tweaking %s in %s\n"), | |
| 744 sym->key, sym->file->key); | |
| 745 sym->tweaking = 1; | |
| 746 file_push (sym->file); | |
| 747 } | |
| 748 | |
| 749 obstack_free (&temporary_obstack, temporary_firstobj); | |
| 750 } | |
| 751 | |
| 752 fclose (stream); | |
| 753 return (file_stack != NULL); | |
| 754 } | |
| 755 | |
| 756 /* Entry point for tlink. Called from main in collect2.c. | |
| 757 | |
| 758 Iteratively try to provide definitions for all the unresolved symbols | |
| 759 mentioned in the linker error messages. | |
| 760 | |
| 761 LD_ARGV is an array of arguments for the linker. | |
| 762 OBJECT_LST is an array of object files that we may be able to recompile | |
| 763 to provide missing definitions. Currently ignored. */ | |
| 764 | |
| 765 void | |
| 766 do_tlink (char **ld_argv, char **object_lst ATTRIBUTE_UNUSED) | |
| 767 { | |
| 768 int exit = tlink_execute ("ld", ld_argv, ldout, lderrout); | |
| 769 | |
| 770 tlink_init (); | |
| 771 | |
| 772 if (exit) | |
| 773 { | |
| 774 int i = 0; | |
| 775 | |
| 776 /* Until collect does a better job of figuring out which are object | |
| 777 files, assume that everything on the command line could be. */ | |
| 778 if (read_repo_files (ld_argv)) | |
| 779 while (exit && i++ < MAX_ITERATIONS) | |
| 780 { | |
| 781 if (tlink_verbose >= 3) | |
| 782 { | |
| 783 dump_file (ldout, stdout); | |
| 784 dump_file (lderrout, stderr); | |
| 785 } | |
| 786 demangle_new_symbols (); | |
| 787 if (! scan_linker_output (ldout) | |
| 788 && ! scan_linker_output (lderrout)) | |
| 789 break; | |
| 790 if (! recompile_files ()) | |
| 791 break; | |
| 792 if (tlink_verbose) | |
| 793 fprintf (stderr, _("collect: relinking\n")); | |
| 794 exit = tlink_execute ("ld", ld_argv, ldout, lderrout); | |
| 795 } | |
| 796 } | |
| 797 | |
| 798 dump_file (ldout, stdout); | |
| 799 unlink (ldout); | |
| 800 dump_file (lderrout, stderr); | |
| 801 unlink (lderrout); | |
| 802 if (exit) | |
| 803 { | |
| 804 error ("ld returned %d exit status", exit); | |
| 805 collect_exit (exit); | |
| 806 } | |
| 807 } |