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Commit | Line | Data |
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aa32d841 JL |
1 | /* Scan linker error messages for missing template instantiations and provide |
2 | them. | |
3 | ||
1fff69c9 | 4 | Copyright (C) 1995, 1998, 1999, 2000, 2001, 2003, 2004, 2005 |
46c5ad27 | 5 | Free Software Foundation, Inc. |
aa32d841 JL |
6 | Contributed by Jason Merrill (jason@cygnus.com). |
7 | ||
1322177d | 8 | This file is part of GCC. |
aa32d841 | 9 | |
1322177d LB |
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 2, or (at your option) any later | |
13 | version. | |
aa32d841 | 14 | |
1322177d LB |
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. | |
aa32d841 JL |
19 | |
20 | You should have received a copy of the GNU General Public License | |
1322177d | 21 | along with GCC; see the file COPYING. If not, write to the Free |
366ccddb KC |
22 | Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA |
23 | 02110-1301, USA. */ | |
aa32d841 | 24 | |
aa32d841 | 25 | #include "config.h" |
670ee920 | 26 | #include "system.h" |
4977bab6 ZW |
27 | #include "coretypes.h" |
28 | #include "tm.h" | |
993c790e | 29 | #include "intl.h" |
e2500fed GK |
30 | #include "obstack.h" |
31 | #include "hashtab.h" | |
aa32d841 | 32 | #include "demangle.h" |
2edfd4ee | 33 | #include "collect2.h" |
aa32d841 JL |
34 | |
35 | #define MAX_ITERATIONS 17 | |
36 | ||
aa32d841 JL |
37 | /* Defined in the automatically-generated underscore.c. */ |
38 | extern int prepends_underscore; | |
39 | ||
40 | static int tlink_verbose; | |
4185f1ce AN |
41 | |
42 | static char initial_cwd[MAXPATHLEN + 1]; | |
aa32d841 | 43 | \f |
e2500fed | 44 | /* Hash table boilerplate for working with htab_t. We have hash tables |
eb686064 | 45 | for symbol names, file names, and demangled symbols. */ |
aa32d841 JL |
46 | |
47 | typedef struct symbol_hash_entry | |
48 | { | |
e2500fed | 49 | const char *key; |
aa32d841 JL |
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 | { | |
e2500fed | 58 | const char *key; |
aa32d841 JL |
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 | { | |
e2500fed | 67 | const char *key; |
aa32d841 JL |
68 | const char *mangled; |
69 | } demangled; | |
70 | ||
e2500fed GK |
71 | /* Hash and comparison functions for these hash tables. */ |
72 | ||
46c5ad27 AJ |
73 | static int hash_string_eq (const void *, const void *); |
74 | static hashval_t hash_string_hash (const void *); | |
e2500fed GK |
75 | |
76 | static int | |
46c5ad27 | 77 | hash_string_eq (const void *s1_p, const void *s2_p) |
e2500fed | 78 | { |
17fa74a2 KH |
79 | const char *const *s1 = (const char *const *) s1_p; |
80 | const char *s2 = (const char *) s2_p; | |
e2500fed GK |
81 | return strcmp (*s1, s2) == 0; |
82 | } | |
83 | ||
84 | static hashval_t | |
46c5ad27 | 85 | hash_string_hash (const void *s_p) |
e2500fed | 86 | { |
17fa74a2 | 87 | const char *const *s = (const char *const *) s_p; |
e2500fed GK |
88 | return (*htab_hash_string) (*s); |
89 | } | |
90 | ||
91 | static htab_t symbol_table; | |
aa32d841 | 92 | |
46c5ad27 AJ |
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); | |
68ec3111 | 101 | static int tlink_execute (const char *, char **, const char *, const char *); |
46c5ad27 AJ |
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 *); | |
54ea1de9 | 113 | |
eb686064 JM |
114 | /* Look up an entry in the symbol hash table. */ |
115 | ||
aa32d841 | 116 | static struct symbol_hash_entry * |
46c5ad27 | 117 | symbol_hash_lookup (const char *string, int create) |
aa32d841 | 118 | { |
fad205ff | 119 | void **e; |
e2500fed | 120 | e = htab_find_slot_with_hash (symbol_table, string, |
17fa74a2 | 121 | (*htab_hash_string) (string), |
e2500fed GK |
122 | create ? INSERT : NO_INSERT); |
123 | if (e == NULL) | |
124 | return NULL; | |
125 | if (*e == NULL) | |
aa32d841 | 126 | { |
e2500fed | 127 | struct symbol_hash_entry *v; |
5ed6ace5 | 128 | *e = v = XCNEW (struct symbol_hash_entry); |
e2500fed | 129 | v->key = xstrdup (string); |
aa32d841 | 130 | } |
e2500fed | 131 | return *e; |
aa32d841 JL |
132 | } |
133 | ||
e2500fed GK |
134 | static htab_t file_table; |
135 | ||
eb686064 JM |
136 | /* Look up an entry in the file hash table. */ |
137 | ||
aa32d841 | 138 | static struct file_hash_entry * |
46c5ad27 | 139 | file_hash_lookup (const char *string) |
aa32d841 | 140 | { |
fad205ff | 141 | void **e; |
e2500fed | 142 | e = htab_find_slot_with_hash (file_table, string, |
17fa74a2 | 143 | (*htab_hash_string) (string), |
e2500fed GK |
144 | INSERT); |
145 | if (*e == NULL) | |
aa32d841 | 146 | { |
e2500fed | 147 | struct file_hash_entry *v; |
5ed6ace5 | 148 | *e = v = XCNEW (struct file_hash_entry); |
e2500fed | 149 | v->key = xstrdup (string); |
aa32d841 | 150 | } |
e2500fed | 151 | return *e; |
aa32d841 JL |
152 | } |
153 | ||
e2500fed GK |
154 | static htab_t demangled_table; |
155 | ||
eb686064 JM |
156 | /* Look up an entry in the demangled name hash table. */ |
157 | ||
aa32d841 | 158 | static struct demangled_hash_entry * |
46c5ad27 | 159 | demangled_hash_lookup (const char *string, int create) |
aa32d841 | 160 | { |
fad205ff | 161 | void **e; |
e2500fed | 162 | e = htab_find_slot_with_hash (demangled_table, string, |
17fa74a2 | 163 | (*htab_hash_string) (string), |
e2500fed GK |
164 | create ? INSERT : NO_INSERT); |
165 | if (e == NULL) | |
166 | return NULL; | |
167 | if (*e == NULL) | |
168 | { | |
169 | struct demangled_hash_entry *v; | |
5ed6ace5 | 170 | *e = v = XCNEW (struct demangled_hash_entry); |
e2500fed GK |
171 | v->key = xstrdup (string); |
172 | } | |
173 | return *e; | |
aa32d841 JL |
174 | } |
175 | \f | |
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 | |
46c5ad27 | 195 | symbol_push (symbol *p) |
aa32d841 | 196 | { |
703ad42b | 197 | struct symbol_stack_entry *ep = obstack_alloc |
aa32d841 JL |
198 | (&symbol_stack_obstack, sizeof (struct symbol_stack_entry)); |
199 | ep->value = p; | |
200 | ep->next = symbol_stack; | |
201 | symbol_stack = ep; | |
202 | } | |
203 | ||
204 | static symbol * | |
46c5ad27 | 205 | symbol_pop (void) |
aa32d841 JL |
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 | |
46c5ad27 | 218 | file_push (file *p) |
aa32d841 JL |
219 | { |
220 | struct file_stack_entry *ep; | |
221 | ||
222 | if (p->tweaking) | |
223 | return; | |
224 | ||
703ad42b | 225 | ep = obstack_alloc |
aa32d841 JL |
226 | (&file_stack_obstack, sizeof (struct file_stack_entry)); |
227 | ep->value = p; | |
228 | ep->next = file_stack; | |
229 | file_stack = ep; | |
230 | p->tweaking = 1; | |
231 | } | |
232 | ||
233 | static file * | |
46c5ad27 | 234 | file_pop (void) |
aa32d841 JL |
235 | { |
236 | struct file_stack_entry *ep = file_stack; | |
237 | file *p; | |
238 | if (ep == NULL) | |
239 | return NULL; | |
240 | p = ep->value; | |
241 | file_stack = ep->next; | |
242 | obstack_free (&file_stack_obstack, ep); | |
243 | p->tweaking = 0; | |
244 | return p; | |
245 | } | |
246 | \f | |
247 | /* Other machinery. */ | |
248 | ||
eb686064 JM |
249 | /* Initialize the tlink machinery. Called from do_tlink. */ |
250 | ||
aa32d841 | 251 | static void |
46c5ad27 | 252 | tlink_init (void) |
aa32d841 | 253 | { |
d4058195 | 254 | const char *p; |
aa32d841 | 255 | |
e2500fed GK |
256 | symbol_table = htab_create (500, hash_string_hash, hash_string_eq, |
257 | NULL); | |
258 | file_table = htab_create (500, hash_string_hash, hash_string_eq, | |
259 | NULL); | |
260 | demangled_table = htab_create (500, hash_string_hash, hash_string_eq, | |
261 | NULL); | |
46c5ad27 | 262 | |
aa32d841 JL |
263 | obstack_begin (&symbol_stack_obstack, 0); |
264 | obstack_begin (&file_stack_obstack, 0); | |
265 | ||
266 | p = getenv ("TLINK_VERBOSE"); | |
267 | if (p) | |
268 | tlink_verbose = atoi (p); | |
269 | else | |
270 | { | |
271 | tlink_verbose = 1; | |
272 | if (vflag) | |
273 | tlink_verbose = 2; | |
274 | if (debug) | |
275 | tlink_verbose = 3; | |
276 | } | |
4185f1ce AN |
277 | |
278 | getcwd (initial_cwd, sizeof (initial_cwd)); | |
aa32d841 JL |
279 | } |
280 | ||
281 | static int | |
68ec3111 ILT |
282 | tlink_execute (const char *prog, char **argv, const char *outname, |
283 | const char *errname) | |
aa32d841 | 284 | { |
1fff69c9 ILT |
285 | struct pex_obj *pex; |
286 | ||
68ec3111 | 287 | pex = collect_execute (prog, argv, outname, errname); |
1fff69c9 | 288 | return collect_wait (prog, pex); |
d92b4486 | 289 | } |
aa32d841 JL |
290 | |
291 | static char * | |
46c5ad27 | 292 | frob_extension (const char *s, const char *ext) |
aa32d841 | 293 | { |
9473c522 | 294 | const char *p = strrchr (s, '/'); |
aa32d841 JL |
295 | if (! p) |
296 | p = s; | |
9473c522 | 297 | p = strrchr (p, '.'); |
aa32d841 JL |
298 | if (! p) |
299 | p = s + strlen (s); | |
300 | ||
301 | obstack_grow (&temporary_obstack, s, p - s); | |
302 | return obstack_copy0 (&temporary_obstack, ext, strlen (ext)); | |
303 | } | |
304 | ||
305 | static char * | |
46c5ad27 | 306 | obstack_fgets (FILE *stream, struct obstack *ob) |
aa32d841 JL |
307 | { |
308 | int c; | |
309 | while ((c = getc (stream)) != EOF && c != '\n') | |
310 | obstack_1grow (ob, c); | |
311 | if (obstack_object_size (ob) == 0) | |
312 | return NULL; | |
313 | obstack_1grow (ob, '\0'); | |
7973fd2a | 314 | return XOBFINISH (ob, char *); |
aa32d841 JL |
315 | } |
316 | ||
317 | static char * | |
46c5ad27 | 318 | tfgets (FILE *stream) |
aa32d841 JL |
319 | { |
320 | return obstack_fgets (stream, &temporary_obstack); | |
321 | } | |
322 | ||
323 | static char * | |
46c5ad27 | 324 | pfgets (FILE *stream) |
aa32d841 | 325 | { |
6d9f628e | 326 | return xstrdup (tfgets (stream)); |
aa32d841 JL |
327 | } |
328 | \f | |
329 | /* Real tlink code. */ | |
330 | ||
eb686064 JM |
331 | /* Subroutine of read_repo_file. We are reading the repo file for file F, |
332 | which is coming in on STREAM, and the symbol that comes next in STREAM | |
14b493d6 | 333 | is offered, chosen or provided if CHOSEN is 0, 1 or 2, respectively. |
eb686064 JM |
334 | |
335 | XXX "provided" is unimplemented, both here and in the compiler. */ | |
336 | ||
aa32d841 | 337 | static void |
46c5ad27 | 338 | freadsym (FILE *stream, file *f, int chosen) |
aa32d841 JL |
339 | { |
340 | symbol *sym; | |
341 | ||
342 | { | |
d4058195 | 343 | const char *name = tfgets (stream); |
aa32d841 JL |
344 | sym = symbol_hash_lookup (name, true); |
345 | } | |
346 | ||
347 | if (sym->file == NULL) | |
348 | { | |
eb686064 JM |
349 | /* We didn't have this symbol already, so we choose this file. */ |
350 | ||
aa32d841 JL |
351 | symbol_push (sym); |
352 | sym->file = f; | |
353 | sym->chosen = chosen; | |
354 | } | |
355 | else if (chosen) | |
356 | { | |
eb686064 JM |
357 | /* We want this file; cast aside any pretender. */ |
358 | ||
aa32d841 JL |
359 | if (sym->chosen && sym->file != f) |
360 | { | |
361 | if (sym->chosen == 1) | |
362 | file_push (sym->file); | |
363 | else | |
364 | { | |
365 | file_push (f); | |
366 | f = sym->file; | |
367 | chosen = sym->chosen; | |
368 | } | |
369 | } | |
370 | sym->file = f; | |
371 | sym->chosen = chosen; | |
372 | } | |
373 | } | |
374 | ||
eb686064 JM |
375 | /* Read in the repo file denoted by F, and record all its information. */ |
376 | ||
aa32d841 | 377 | static void |
46c5ad27 | 378 | read_repo_file (file *f) |
aa32d841 JL |
379 | { |
380 | char c; | |
e2500fed | 381 | FILE *stream = fopen (f->key, "r"); |
aa32d841 JL |
382 | |
383 | if (tlink_verbose >= 2) | |
e2500fed | 384 | fprintf (stderr, _("collect: reading %s\n"), f->key); |
aa32d841 JL |
385 | |
386 | while (fscanf (stream, "%c ", &c) == 1) | |
387 | { | |
388 | switch (c) | |
389 | { | |
390 | case 'A': | |
391 | f->args = pfgets (stream); | |
392 | break; | |
393 | case 'D': | |
394 | f->dir = pfgets (stream); | |
395 | break; | |
396 | case 'M': | |
397 | f->main = pfgets (stream); | |
398 | break; | |
399 | case 'P': | |
400 | freadsym (stream, f, 2); | |
401 | break; | |
402 | case 'C': | |
403 | freadsym (stream, f, 1); | |
404 | break; | |
405 | case 'O': | |
406 | freadsym (stream, f, 0); | |
407 | break; | |
408 | } | |
409 | obstack_free (&temporary_obstack, temporary_firstobj); | |
410 | } | |
411 | fclose (stream); | |
412 | if (f->args == NULL) | |
413 | f->args = getenv ("COLLECT_GCC_OPTIONS"); | |
414 | if (f->dir == NULL) | |
415 | f->dir = "."; | |
416 | } | |
417 | ||
eb686064 JM |
418 | /* We might want to modify LINE, which is a symbol line from file F. We do |
419 | this if either we saw an error message referring to the symbol in | |
420 | question, or we have already allocated the symbol to another file and | |
421 | this one wants to emit it as well. */ | |
422 | ||
aa32d841 | 423 | static void |
46c5ad27 | 424 | maybe_tweak (char *line, file *f) |
aa32d841 JL |
425 | { |
426 | symbol *sym = symbol_hash_lookup (line + 2, false); | |
427 | ||
428 | if ((sym->file == f && sym->tweaking) | |
429 | || (sym->file != f && line[0] == 'C')) | |
430 | { | |
431 | sym->tweaking = 0; | |
432 | sym->tweaked = 1; | |
433 | ||
434 | if (line[0] == 'O') | |
435 | line[0] = 'C'; | |
436 | else | |
437 | line[0] = 'O'; | |
438 | } | |
439 | } | |
440 | ||
eb686064 | 441 | /* Update the repo files for each of the object files we have adjusted and |
4185f1ce | 442 | recompile. */ |
eb686064 | 443 | |
aa32d841 | 444 | static int |
46c5ad27 | 445 | recompile_files (void) |
aa32d841 JL |
446 | { |
447 | file *f; | |
448 | ||
e4d72771 KJ |
449 | putenv (xstrdup ("COMPILER_PATH=")); |
450 | putenv (xstrdup ("LIBRARY_PATH=")); | |
d92b4486 | 451 | |
aa32d841 JL |
452 | while ((f = file_pop ()) != NULL) |
453 | { | |
4185f1ce AN |
454 | char *line; |
455 | const char *p, *q; | |
456 | char **argv; | |
457 | struct obstack arg_stack; | |
e2500fed GK |
458 | FILE *stream = fopen (f->key, "r"); |
459 | const char *const outname = frob_extension (f->key, ".rnw"); | |
aa32d841 JL |
460 | FILE *output = fopen (outname, "w"); |
461 | ||
462 | while ((line = tfgets (stream)) != NULL) | |
463 | { | |
464 | switch (line[0]) | |
465 | { | |
466 | case 'C': | |
467 | case 'O': | |
468 | maybe_tweak (line, f); | |
469 | } | |
470 | fprintf (output, "%s\n", line); | |
471 | } | |
472 | fclose (stream); | |
473 | fclose (output); | |
2d8a7f23 DS |
474 | /* On Windows "rename" returns -1 and sets ERRNO to EACCESS if |
475 | the new file name already exists. Therefore, we explicitly | |
476 | remove the old file first. */ | |
477 | if (remove (f->key) == -1) | |
478 | fatal_perror ("removing .rpo file"); | |
479 | if (rename (outname, f->key) == -1) | |
480 | fatal_perror ("renaming .rpo file"); | |
aa32d841 | 481 | |
4684cd27 MM |
482 | if (!f->args) |
483 | { | |
9e637a26 | 484 | error ("repository file '%s' does not contain command-line " |
4684cd27 MM |
485 | "arguments", f->key); |
486 | return 0; | |
487 | } | |
4185f1ce AN |
488 | |
489 | /* Build a null-terminated argv array suitable for | |
490 | tlink_execute(). Manipulate arguments on the arg_stack while | |
491 | building argv on the temporary_obstack. */ | |
492 | ||
493 | obstack_init (&arg_stack); | |
494 | obstack_ptr_grow (&temporary_obstack, c_file_name); | |
495 | ||
496 | for (p = f->args; *p != '\0'; p = q + 1) | |
497 | { | |
498 | /* Arguments are delimited by single-quotes. Find the | |
499 | opening quote. */ | |
500 | p = strchr (p, '\''); | |
501 | if (!p) | |
502 | goto done; | |
503 | ||
504 | /* Find the closing quote. */ | |
505 | q = strchr (p + 1, '\''); | |
506 | if (!q) | |
507 | goto done; | |
508 | ||
509 | obstack_grow (&arg_stack, p + 1, q - (p + 1)); | |
510 | ||
511 | /* Replace '\'' with '. This is how set_collect_gcc_options | |
512 | encodes a single-quote. */ | |
513 | while (q[1] == '\\' && q[2] == '\'' && q[3] == '\'') | |
514 | { | |
515 | const char *r; | |
516 | ||
517 | r = strchr (q + 4, '\''); | |
518 | if (!r) | |
519 | goto done; | |
520 | ||
521 | obstack_grow (&arg_stack, q + 3, r - (q + 3)); | |
522 | q = r; | |
523 | } | |
524 | ||
525 | obstack_1grow (&arg_stack, '\0'); | |
526 | obstack_ptr_grow (&temporary_obstack, obstack_finish (&arg_stack)); | |
527 | } | |
528 | done: | |
529 | obstack_ptr_grow (&temporary_obstack, f->main); | |
530 | obstack_ptr_grow (&temporary_obstack, NULL); | |
7973fd2a | 531 | argv = XOBFINISH (&temporary_obstack, char **); |
aa32d841 JL |
532 | |
533 | if (tlink_verbose) | |
5e4adfba | 534 | fprintf (stderr, _("collect: recompiling %s\n"), f->main); |
aa32d841 | 535 | |
4185f1ce | 536 | if (chdir (f->dir) != 0 |
68ec3111 | 537 | || tlink_execute (c_file_name, argv, NULL, NULL) != 0 |
4185f1ce | 538 | || chdir (initial_cwd) != 0) |
aa32d841 JL |
539 | return 0; |
540 | ||
541 | read_repo_file (f); | |
542 | ||
4185f1ce | 543 | obstack_free (&arg_stack, NULL); |
aa32d841 JL |
544 | obstack_free (&temporary_obstack, temporary_firstobj); |
545 | } | |
546 | return 1; | |
547 | } | |
548 | ||
eb686064 JM |
549 | /* The first phase of processing: determine which object files have |
550 | .rpo files associated with them, and read in the information. */ | |
551 | ||
aa32d841 | 552 | static int |
46c5ad27 | 553 | read_repo_files (char **object_lst) |
aa32d841 JL |
554 | { |
555 | char **object = object_lst; | |
556 | ||
557 | for (; *object; object++) | |
558 | { | |
2c561874 | 559 | const char *p; |
aa32d841 JL |
560 | file *f; |
561 | ||
2c561874 JM |
562 | /* Don't bother trying for ld flags. */ |
563 | if (*object[0] == '-') | |
564 | continue; | |
565 | ||
566 | p = frob_extension (*object, ".rpo"); | |
567 | ||
aa32d841 JL |
568 | if (! file_exists (p)) |
569 | continue; | |
570 | ||
571 | f = file_hash_lookup (p); | |
572 | ||
573 | read_repo_file (f); | |
574 | } | |
575 | ||
576 | if (file_stack != NULL && ! recompile_files ()) | |
577 | return 0; | |
578 | ||
579 | return (symbol_stack != NULL); | |
580 | } | |
581 | ||
eb686064 JM |
582 | /* Add the demangled forms of any new symbols to the hash table. */ |
583 | ||
aa32d841 | 584 | static void |
46c5ad27 | 585 | demangle_new_symbols (void) |
aa32d841 JL |
586 | { |
587 | symbol *sym; | |
588 | ||
589 | while ((sym = symbol_pop ()) != NULL) | |
590 | { | |
591 | demangled *dem; | |
e2500fed | 592 | const char *p = cplus_demangle (sym->key, DMGL_PARAMS | DMGL_ANSI); |
aa32d841 JL |
593 | |
594 | if (! p) | |
595 | continue; | |
596 | ||
597 | dem = demangled_hash_lookup (p, true); | |
e2500fed | 598 | dem->mangled = sym->key; |
aa32d841 JL |
599 | } |
600 | } | |
601 | ||
eb686064 JM |
602 | /* Step through the output of the linker, in the file named FNAME, and |
603 | adjust the settings for each symbol encountered. */ | |
604 | ||
aa32d841 | 605 | static int |
46c5ad27 | 606 | scan_linker_output (const char *fname) |
aa32d841 JL |
607 | { |
608 | FILE *stream = fopen (fname, "r"); | |
609 | char *line; | |
e7d406d5 | 610 | int skip_next_in_line = 0; |
aa32d841 JL |
611 | |
612 | while ((line = tfgets (stream)) != NULL) | |
613 | { | |
614 | char *p = line, *q; | |
615 | symbol *sym; | |
616 | int end; | |
196bea21 MS |
617 | int ok = 0; |
618 | ||
e7d406d5 MS |
619 | /* On darwin9, we might have to skip " in " lines as well. */ |
620 | if (skip_next_in_line | |
621 | && strstr (p, " in ")) | |
40728134 | 622 | continue; |
e7d406d5 | 623 | skip_next_in_line = 0; |
d92b4486 | 624 | |
17fa74a2 | 625 | while (*p && ISSPACE ((unsigned char) *p)) |
aa32d841 JL |
626 | ++p; |
627 | ||
628 | if (! *p) | |
629 | continue; | |
630 | ||
17fa74a2 | 631 | for (q = p; *q && ! ISSPACE ((unsigned char) *q); ++q) |
aa32d841 JL |
632 | ; |
633 | ||
634 | /* Try the first word on the line. */ | |
635 | if (*p == '.') | |
636 | ++p; | |
3fd9d606 ZW |
637 | if (!strncmp (p, USER_LABEL_PREFIX, strlen (USER_LABEL_PREFIX))) |
638 | p += strlen (USER_LABEL_PREFIX); | |
aa32d841 JL |
639 | |
640 | end = ! *q; | |
641 | *q = 0; | |
642 | sym = symbol_hash_lookup (p, false); | |
643 | ||
644c7c4f GK |
644 | /* Some SVR4 linkers produce messages like |
645 | ld: 0711-317 ERROR: Undefined symbol: .g__t3foo1Zi | |
646 | */ | |
17fa74a2 | 647 | if (! sym && ! end && strstr (q + 1, "Undefined symbol: ")) |
644c7c4f | 648 | { |
17fa74a2 | 649 | char *p = strrchr (q + 1, ' '); |
644c7c4f GK |
650 | p++; |
651 | if (*p == '.') | |
652 | p++; | |
3fd9d606 ZW |
653 | if (!strncmp (p, USER_LABEL_PREFIX, strlen (USER_LABEL_PREFIX))) |
654 | p += strlen (USER_LABEL_PREFIX); | |
644c7c4f GK |
655 | sym = symbol_hash_lookup (p, false); |
656 | } | |
657 | ||
aa32d841 | 658 | if (! sym && ! end) |
b4558b57 | 659 | /* Try a mangled name in quotes. */ |
aa32d841 | 660 | { |
17fa74a2 | 661 | const char *oldq = q + 1; |
aa32d841 | 662 | demangled *dem = 0; |
aa32d841 JL |
663 | q = 0; |
664 | ||
e7d406d5 | 665 | /* On darwin9, we look for "foo" referenced from:\n\(.* in .*\n\)* */ |
196bea21 MS |
666 | if (strcmp (oldq, "referenced from:") == 0) |
667 | { | |
668 | /* We have to remember that we found a symbol to tweak. */ | |
669 | ok = 1; | |
670 | ||
e7d406d5 MS |
671 | /* We actually want to start from the first word on the |
672 | line. */ | |
196bea21 MS |
673 | oldq = p; |
674 | ||
e7d406d5 MS |
675 | /* Since the format is multiline, we have to skip |
676 | following lines with " in ". */ | |
677 | skip_next_in_line = 1; | |
196bea21 MS |
678 | } |
679 | ||
b4558b57 | 680 | /* First try `GNU style'. */ |
9473c522 | 681 | p = strchr (oldq, '`'); |
b4558b57 | 682 | if (p) |
9473c522 | 683 | p++, q = strchr (p, '\''); |
b4558b57 | 684 | /* Then try "double quotes". */ |
9473c522 JM |
685 | else if (p = strchr (oldq, '"'), p) |
686 | p++, q = strchr (p, '"'); | |
973a43f6 MS |
687 | else { |
688 | /* Then try entire line. */ | |
689 | q = strchr (oldq, 0); | |
690 | if (q != oldq) | |
a7050d49 | 691 | p = (char *)oldq; |
973a43f6 | 692 | } |
aa32d841 | 693 | |
6ff7fb95 | 694 | if (p) |
8ace9f18 AM |
695 | { |
696 | /* Don't let the strstr's below see the demangled name; we | |
697 | might get spurious matches. */ | |
698 | p[-1] = '\0'; | |
699 | ||
700 | /* powerpc64-linux references .foo when calling function foo. */ | |
701 | if (*p == '.') | |
702 | p++; | |
703 | } | |
6ff7fb95 | 704 | |
57be4e89 JM |
705 | /* We need to check for certain error keywords here, or we would |
706 | mistakenly use GNU ld's "In function `foo':" message. */ | |
196bea21 MS |
707 | if (q && (ok |
708 | || strstr (oldq, "ndefined") | |
3f94eee6 | 709 | || strstr (oldq, "nresolved") |
eb20f668 | 710 | || strstr (oldq, "nsatisfied") |
57be4e89 | 711 | || strstr (oldq, "ultiple"))) |
aa32d841 | 712 | { |
b4558b57 JM |
713 | *q = 0; |
714 | dem = demangled_hash_lookup (p, false); | |
715 | if (dem) | |
716 | sym = symbol_hash_lookup (dem->mangled, false); | |
717 | else | |
d92b4486 | 718 | { |
3fd9d606 ZW |
719 | if (!strncmp (p, USER_LABEL_PREFIX, |
720 | strlen (USER_LABEL_PREFIX))) | |
721 | p += strlen (USER_LABEL_PREFIX); | |
9c5b50b3 JM |
722 | sym = symbol_hash_lookup (p, false); |
723 | } | |
aa32d841 | 724 | } |
aa32d841 JL |
725 | } |
726 | ||
727 | if (sym && sym->tweaked) | |
7b6ffd11 | 728 | { |
9e637a26 | 729 | error ("'%s' was assigned to '%s', but was not defined " |
4684cd27 MM |
730 | "during recompilation, or vice versa", |
731 | sym->key, sym->file->key); | |
7b6ffd11 KI |
732 | fclose (stream); |
733 | return 0; | |
734 | } | |
aa32d841 JL |
735 | if (sym && !sym->tweaking) |
736 | { | |
737 | if (tlink_verbose >= 2) | |
5e4adfba | 738 | fprintf (stderr, _("collect: tweaking %s in %s\n"), |
e2500fed | 739 | sym->key, sym->file->key); |
aa32d841 JL |
740 | sym->tweaking = 1; |
741 | file_push (sym->file); | |
742 | } | |
d92b4486 | 743 | |
aa32d841 JL |
744 | obstack_free (&temporary_obstack, temporary_firstobj); |
745 | } | |
746 | ||
7b6ffd11 | 747 | fclose (stream); |
aa32d841 JL |
748 | return (file_stack != NULL); |
749 | } | |
750 | ||
eb686064 JM |
751 | /* Entry point for tlink. Called from main in collect2.c. |
752 | ||
753 | Iteratively try to provide definitions for all the unresolved symbols | |
754 | mentioned in the linker error messages. | |
755 | ||
756 | LD_ARGV is an array of arguments for the linker. | |
757 | OBJECT_LST is an array of object files that we may be able to recompile | |
758 | to provide missing definitions. Currently ignored. */ | |
759 | ||
aa32d841 | 760 | void |
46c5ad27 | 761 | do_tlink (char **ld_argv, char **object_lst ATTRIBUTE_UNUSED) |
aa32d841 | 762 | { |
68ec3111 | 763 | int exit = tlink_execute ("ld", ld_argv, ldout, lderrout); |
aa32d841 JL |
764 | |
765 | tlink_init (); | |
766 | ||
767 | if (exit) | |
768 | { | |
769 | int i = 0; | |
770 | ||
771 | /* Until collect does a better job of figuring out which are object | |
772 | files, assume that everything on the command line could be. */ | |
773 | if (read_repo_files (ld_argv)) | |
774 | while (exit && i++ < MAX_ITERATIONS) | |
775 | { | |
776 | if (tlink_verbose >= 3) | |
68ec3111 ILT |
777 | { |
778 | dump_file (ldout, stdout); | |
779 | dump_file (lderrout, stderr); | |
780 | } | |
aa32d841 | 781 | demangle_new_symbols (); |
68ec3111 ILT |
782 | if (! scan_linker_output (ldout) |
783 | && ! scan_linker_output (lderrout)) | |
aa32d841 JL |
784 | break; |
785 | if (! recompile_files ()) | |
786 | break; | |
787 | if (tlink_verbose) | |
5e4adfba | 788 | fprintf (stderr, _("collect: relinking\n")); |
68ec3111 | 789 | exit = tlink_execute ("ld", ld_argv, ldout, lderrout); |
aa32d841 JL |
790 | } |
791 | } | |
792 | ||
68ec3111 | 793 | dump_file (ldout, stdout); |
aa32d841 | 794 | unlink (ldout); |
68ec3111 ILT |
795 | dump_file (lderrout, stderr); |
796 | unlink (lderrout); | |
aa32d841 JL |
797 | if (exit) |
798 | { | |
799 | error ("ld returned %d exit status", exit); | |
800 | collect_exit (exit); | |
801 | } | |
802 | } |