Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Main program of GNU linker. |
4e5bae56 DJ |
2 | Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
3 | 2002 | |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | Written by Steve Chamberlain steve@cygnus.com | |
6 | ||
7 | This file is part of GLD, the Gnu Linker. | |
8 | ||
9 | GLD is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2, or (at your option) | |
12 | any later version. | |
13 | ||
14 | GLD is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GLD; see the file COPYING. If not, write to the Free | |
21 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
22 | 02111-1307, USA. */ | |
23 | ||
24 | #include "bfd.h" | |
25 | #include "sysdep.h" | |
26 | #include <stdio.h> | |
3882b010 | 27 | #include "safe-ctype.h" |
252b5132 RH |
28 | #include "libiberty.h" |
29 | #include "progress.h" | |
30 | #include "bfdlink.h" | |
5af11cab | 31 | #include "filenames.h" |
252b5132 RH |
32 | |
33 | #include "ld.h" | |
34 | #include "ldmain.h" | |
35 | #include "ldmisc.h" | |
36 | #include "ldwrite.h" | |
252b5132 RH |
37 | #include "ldexp.h" |
38 | #include "ldlang.h" | |
2c382fb6 | 39 | #include "ldgram.h" |
252b5132 RH |
40 | #include "ldlex.h" |
41 | #include "ldfile.h" | |
b71e2778 | 42 | #include "ldemul.h" |
252b5132 RH |
43 | #include "ldctor.h" |
44 | ||
6d5e62f8 | 45 | /* Somewhere above, sys/stat.h got included . . . . */ |
252b5132 RH |
46 | #if !defined(S_ISDIR) && defined(S_IFDIR) |
47 | #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) | |
48 | #endif | |
49 | ||
50 | #include <string.h> | |
51 | ||
52 | #ifdef HAVE_SBRK | |
53 | #ifdef NEED_DECLARATION_SBRK | |
54 | extern PTR sbrk (); | |
55 | #endif | |
56 | #endif | |
57 | ||
4e5bae56 DJ |
58 | int main PARAMS ((int, char **)); |
59 | ||
252b5132 RH |
60 | static char *get_emulation PARAMS ((int, char **)); |
61 | static void set_scripts_dir PARAMS ((void)); | |
62 | ||
63 | /* EXPORTS */ | |
64 | ||
65 | char *default_target; | |
66 | const char *output_filename = "a.out"; | |
67 | ||
68 | /* Name this program was invoked by. */ | |
69 | char *program_name; | |
70 | ||
6d5e62f8 | 71 | /* The file that we're creating. */ |
252b5132 RH |
72 | bfd *output_bfd = 0; |
73 | ||
74 | /* Set by -G argument, for MIPS ECOFF target. */ | |
75 | int g_switch_value = 8; | |
76 | ||
77 | /* Nonzero means print names of input files as processed. */ | |
78 | boolean trace_files; | |
79 | ||
80 | /* Nonzero means same, but note open failures, too. */ | |
81 | boolean trace_file_tries; | |
82 | ||
83 | /* Nonzero means version number was printed, so exit successfully | |
84 | instead of complaining if no input files are given. */ | |
85 | boolean version_printed; | |
86 | ||
87 | /* Nonzero means link in every member of an archive. */ | |
88 | boolean whole_archive; | |
89 | ||
90 | /* True if we should demangle symbol names. */ | |
91 | boolean demangling; | |
92 | ||
93 | args_type command_line; | |
94 | ||
95 | ld_config_type config; | |
96 | ||
97 | static void remove_output PARAMS ((void)); | |
98 | static boolean check_for_scripts_dir PARAMS ((char *dir)); | |
99 | static boolean add_archive_element PARAMS ((struct bfd_link_info *, bfd *, | |
100 | const char *)); | |
101 | static boolean multiple_definition PARAMS ((struct bfd_link_info *, | |
102 | const char *, | |
103 | bfd *, asection *, bfd_vma, | |
104 | bfd *, asection *, bfd_vma)); | |
105 | static boolean multiple_common PARAMS ((struct bfd_link_info *, | |
106 | const char *, bfd *, | |
107 | enum bfd_link_hash_type, bfd_vma, | |
108 | bfd *, enum bfd_link_hash_type, | |
109 | bfd_vma)); | |
110 | static boolean add_to_set PARAMS ((struct bfd_link_info *, | |
111 | struct bfd_link_hash_entry *, | |
112 | bfd_reloc_code_real_type, | |
113 | bfd *, asection *, bfd_vma)); | |
114 | static boolean constructor_callback PARAMS ((struct bfd_link_info *, | |
115 | boolean constructor, | |
116 | const char *name, | |
117 | bfd *, asection *, bfd_vma)); | |
118 | static boolean warning_callback PARAMS ((struct bfd_link_info *, | |
119 | const char *, const char *, bfd *, | |
120 | asection *, bfd_vma)); | |
121 | static void warning_find_reloc PARAMS ((bfd *, asection *, PTR)); | |
122 | static boolean undefined_symbol PARAMS ((struct bfd_link_info *, | |
123 | const char *, bfd *, | |
b6f29aaa | 124 | asection *, bfd_vma, boolean)); |
252b5132 RH |
125 | static boolean reloc_overflow PARAMS ((struct bfd_link_info *, const char *, |
126 | const char *, bfd_vma, | |
127 | bfd *, asection *, bfd_vma)); | |
128 | static boolean reloc_dangerous PARAMS ((struct bfd_link_info *, const char *, | |
129 | bfd *, asection *, bfd_vma)); | |
130 | static boolean unattached_reloc PARAMS ((struct bfd_link_info *, | |
131 | const char *, bfd *, asection *, | |
132 | bfd_vma)); | |
133 | static boolean notice PARAMS ((struct bfd_link_info *, const char *, | |
134 | bfd *, asection *, bfd_vma)); | |
135 | ||
6d5e62f8 | 136 | static struct bfd_link_callbacks link_callbacks = { |
252b5132 RH |
137 | add_archive_element, |
138 | multiple_definition, | |
139 | multiple_common, | |
140 | add_to_set, | |
141 | constructor_callback, | |
142 | warning_callback, | |
143 | undefined_symbol, | |
144 | reloc_overflow, | |
145 | reloc_dangerous, | |
146 | unattached_reloc, | |
147 | notice | |
148 | }; | |
149 | ||
150 | struct bfd_link_info link_info; | |
151 | \f | |
152 | static void | |
153 | remove_output () | |
154 | { | |
6d5e62f8 | 155 | if (output_filename) |
252b5132 RH |
156 | { |
157 | if (output_bfd && output_bfd->iostream) | |
6d5e62f8 | 158 | fclose ((FILE *) (output_bfd->iostream)); |
252b5132 RH |
159 | if (delete_output_file_on_failure) |
160 | unlink (output_filename); | |
161 | } | |
162 | } | |
163 | ||
164 | int | |
165 | main (argc, argv) | |
166 | int argc; | |
167 | char **argv; | |
168 | { | |
169 | char *emulation; | |
170 | long start_time = get_run_time (); | |
171 | ||
172 | #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) | |
173 | setlocale (LC_MESSAGES, ""); | |
3882b010 L |
174 | #endif |
175 | #if defined (HAVE_SETLOCALE) | |
176 | setlocale (LC_CTYPE, ""); | |
252b5132 RH |
177 | #endif |
178 | bindtextdomain (PACKAGE, LOCALEDIR); | |
179 | textdomain (PACKAGE); | |
180 | ||
181 | program_name = argv[0]; | |
182 | xmalloc_set_program_name (program_name); | |
183 | ||
184 | START_PROGRESS (program_name, 0); | |
185 | ||
186 | bfd_init (); | |
187 | ||
188 | bfd_set_error_program_name (program_name); | |
189 | ||
190 | xatexit (remove_output); | |
191 | ||
192 | /* Set the default BFD target based on the configured target. Doing | |
193 | this permits the linker to be configured for a particular target, | |
194 | and linked against a shared BFD library which was configured for | |
195 | a different target. The macro TARGET is defined by Makefile. */ | |
196 | if (! bfd_set_default_target (TARGET)) | |
197 | { | |
198 | einfo (_("%X%P: can't set BFD default target to `%s': %E\n"), TARGET); | |
199 | xexit (1); | |
200 | } | |
201 | ||
b47c4208 AM |
202 | #if YYDEBUG |
203 | { | |
204 | extern int yydebug; | |
205 | yydebug = 1; | |
206 | } | |
207 | #endif | |
208 | ||
252b5132 RH |
209 | /* Initialize the data about options. */ |
210 | trace_files = trace_file_tries = version_printed = false; | |
211 | whole_archive = false; | |
212 | config.build_constructors = true; | |
213 | config.dynamic_link = false; | |
214 | config.has_shared = false; | |
a854a4a7 AM |
215 | config.split_by_reloc = (unsigned) -1; |
216 | config.split_by_file = (bfd_size_type) -1; | |
252b5132 | 217 | command_line.force_common_definition = false; |
4818e05f | 218 | command_line.inhibit_common_definition = false; |
252b5132 RH |
219 | command_line.interpreter = NULL; |
220 | command_line.rpath = NULL; | |
221 | command_line.warn_mismatch = true; | |
222 | command_line.check_section_addresses = true; | |
223 | ||
224 | /* We initialize DEMANGLING based on the environment variable | |
225 | COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the | |
226 | output of the linker, unless COLLECT_NO_DEMANGLE is set in the | |
227 | environment. Acting the same way here lets us provide the same | |
228 | interface by default. */ | |
229 | demangling = getenv ("COLLECT_NO_DEMANGLE") == NULL; | |
230 | ||
231 | link_info.callbacks = &link_callbacks; | |
232 | link_info.relocateable = false; | |
a712da20 | 233 | link_info.emitrelocations = false; |
252b5132 RH |
234 | link_info.shared = false; |
235 | link_info.symbolic = false; | |
2a096f04 | 236 | link_info.export_dynamic = false; |
252b5132 RH |
237 | link_info.static_link = false; |
238 | link_info.traditional_format = false; | |
239 | link_info.optimize = false; | |
240 | link_info.no_undefined = false; | |
b79e8c78 | 241 | link_info.allow_shlib_undefined = false; |
252b5132 | 242 | link_info.strip = strip_none; |
f5fa8ca2 | 243 | link_info.discard = discard_sec_merge; |
252b5132 RH |
244 | link_info.keep_memory = true; |
245 | link_info.input_bfds = NULL; | |
246 | link_info.create_object_symbols_section = NULL; | |
247 | link_info.hash = NULL; | |
248 | link_info.keep_hash = NULL; | |
249 | link_info.notice_all = false; | |
250 | link_info.notice_hash = NULL; | |
251 | link_info.wrap_hash = NULL; | |
252 | link_info.mpc860c0 = 0; | |
3dbf70a2 MM |
253 | /* SVR4 linkers seem to set DT_INIT and DT_FINI based on magic _init |
254 | and _fini symbols. We are compatible. */ | |
255 | link_info.init_function = "_init"; | |
256 | link_info.fini_function = "_fini"; | |
6c1439be | 257 | link_info.new_dtags = false; |
320fec9a | 258 | link_info.eh_frame_hdr = false; |
e0ee487b L |
259 | link_info.flags = (bfd_vma) 0; |
260 | link_info.flags_1 = (bfd_vma) 0; | |
b044cda1 | 261 | link_info.pei386_auto_import = false; |
db6751f2 JJ |
262 | link_info.combreloc = false; |
263 | link_info.spare_dynamic_tags = 5; | |
3dbf70a2 | 264 | |
252b5132 RH |
265 | ldfile_add_arch (""); |
266 | ||
267 | config.make_executable = true; | |
268 | force_make_executable = false; | |
269 | config.magic_demand_paged = true; | |
270 | config.text_read_only = true; | |
252b5132 RH |
271 | |
272 | emulation = get_emulation (argc, argv); | |
273 | ldemul_choose_mode (emulation); | |
742aeb63 | 274 | default_target = ldemul_choose_target (argc, argv); |
252b5132 RH |
275 | lang_init (); |
276 | ldemul_before_parse (); | |
277 | lang_has_input_file = false; | |
278 | parse_args (argc, argv); | |
279 | ||
280 | ldemul_set_symbols (); | |
281 | ||
282 | if (link_info.relocateable) | |
283 | { | |
284 | if (command_line.gc_sections) | |
285 | einfo ("%P%F: --gc-sections and -r may not be used together\n"); | |
286 | if (link_info.mpc860c0) | |
287 | einfo (_("%P%F: -r and --mpc860c0 may not be used together\n")); | |
288 | else if (command_line.relax) | |
289 | einfo (_("%P%F: --relax and -r may not be used together\n")); | |
290 | if (link_info.shared) | |
291 | einfo (_("%P%F: -r and -shared may not be used together\n")); | |
292 | } | |
293 | ||
7333607e JJ |
294 | if (! link_info.shared) |
295 | { | |
296 | if (command_line.filter_shlib) | |
e97cb84f | 297 | einfo (_("%P%F: -F may not be used without -shared\n")); |
7333607e | 298 | if (command_line.auxiliary_filters) |
e97cb84f | 299 | einfo (_("%P%F: -f may not be used without -shared\n")); |
7333607e JJ |
300 | } |
301 | ||
252b5132 RH |
302 | /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I |
303 | don't see how else this can be handled, since in this case we | |
304 | must preserve all externally visible symbols. */ | |
305 | if (link_info.relocateable && link_info.strip == strip_all) | |
306 | { | |
307 | link_info.strip = strip_debugger; | |
f5fa8ca2 | 308 | if (link_info.discard == discard_sec_merge) |
252b5132 RH |
309 | link_info.discard = discard_all; |
310 | } | |
311 | ||
312 | /* This essentially adds another -L directory so this must be done after | |
313 | the -L's in argv have been processed. */ | |
314 | set_scripts_dir (); | |
315 | ||
b9a8de1e NC |
316 | /* If we have not already opened and parsed a linker script |
317 | read the emulation's appropriate default script. */ | |
b90e1c6f | 318 | if (saved_script_handle == NULL) |
252b5132 | 319 | { |
252b5132 | 320 | int isfile; |
b9a8de1e | 321 | char *s = ldemul_get_script (& isfile); |
252b5132 RH |
322 | |
323 | if (isfile) | |
324 | ldfile_open_command_file (s); | |
325 | else | |
b9a8de1e | 326 | { |
252b5132 RH |
327 | lex_string = s; |
328 | lex_redirect (s); | |
329 | } | |
330 | parser_input = input_script; | |
331 | yyparse (); | |
332 | lex_string = NULL; | |
333 | } | |
334 | ||
b9a8de1e NC |
335 | if (trace_file_tries) |
336 | { | |
9cb61eab AM |
337 | if (saved_script_handle) |
338 | info_msg (_("using external linker script:")); | |
339 | else | |
340 | info_msg (_("using internal linker script:")); | |
341 | info_msg ("\n==================================================\n"); | |
b9a8de1e NC |
342 | |
343 | if (saved_script_handle) | |
344 | { | |
74699268 | 345 | static const int ld_bufsz = 8193; |
b9a8de1e | 346 | size_t n; |
74699268 | 347 | char *buf = xmalloc (ld_bufsz); |
b9a8de1e NC |
348 | |
349 | rewind (saved_script_handle); | |
74699268 | 350 | while ((n = fread (buf, 1, ld_bufsz - 1, saved_script_handle)) > 0) |
b9a8de1e NC |
351 | { |
352 | buf [n] = 0; | |
353 | info_msg (buf); | |
354 | } | |
355 | rewind (saved_script_handle); | |
356 | free (buf); | |
357 | } | |
358 | else | |
359 | { | |
360 | int isfile; | |
361 | ||
362 | info_msg (ldemul_get_script (& isfile)); | |
363 | } | |
364 | ||
365 | info_msg ("\n==================================================\n"); | |
366 | } | |
367 | ||
252b5132 RH |
368 | lang_final (); |
369 | ||
370 | if (lang_has_input_file == false) | |
371 | { | |
372 | if (version_printed) | |
373 | xexit (0); | |
374 | einfo (_("%P%F: no input files\n")); | |
375 | } | |
376 | ||
377 | if (trace_files) | |
378 | { | |
379 | info_msg (_("%P: mode %s\n"), emulation); | |
380 | } | |
381 | ||
382 | ldemul_after_parse (); | |
383 | ||
252b5132 RH |
384 | if (config.map_filename) |
385 | { | |
386 | if (strcmp (config.map_filename, "-") == 0) | |
387 | { | |
388 | config.map_file = stdout; | |
389 | } | |
390 | else | |
391 | { | |
392 | config.map_file = fopen (config.map_filename, FOPEN_WT); | |
393 | if (config.map_file == (FILE *) NULL) | |
394 | { | |
395 | bfd_set_error (bfd_error_system_call); | |
396 | einfo (_("%P%F: cannot open map file %s: %E\n"), | |
397 | config.map_filename); | |
398 | } | |
399 | } | |
400 | } | |
401 | ||
252b5132 RH |
402 | lang_process (); |
403 | ||
404 | /* Print error messages for any missing symbols, for any warning | |
6d5e62f8 | 405 | symbols, and possibly multiple definitions. */ |
252b5132 | 406 | |
252b5132 RH |
407 | if (link_info.relocateable) |
408 | output_bfd->flags &= ~EXEC_P; | |
409 | else | |
410 | output_bfd->flags |= EXEC_P; | |
411 | ||
412 | ldwrite (); | |
413 | ||
414 | if (config.map_file != NULL) | |
415 | lang_map (); | |
416 | if (command_line.cref) | |
417 | output_cref (config.map_file != NULL ? config.map_file : stdout); | |
418 | if (nocrossref_list != NULL) | |
419 | check_nocrossrefs (); | |
420 | ||
421 | /* Even if we're producing relocateable output, some non-fatal errors should | |
422 | be reported in the exit status. (What non-fatal errors, if any, do we | |
423 | want to ignore for relocateable output?) */ | |
424 | ||
425 | if (config.make_executable == false && force_make_executable == false) | |
426 | { | |
427 | if (trace_files == true) | |
428 | { | |
429 | einfo (_("%P: link errors found, deleting executable `%s'\n"), | |
430 | output_filename); | |
431 | } | |
432 | ||
433 | /* The file will be removed by remove_output. */ | |
434 | ||
435 | xexit (1); | |
436 | } | |
437 | else | |
438 | { | |
439 | if (! bfd_close (output_bfd)) | |
440 | einfo (_("%F%B: final close failed: %E\n"), output_bfd); | |
441 | ||
442 | /* If the --force-exe-suffix is enabled, and we're making an | |
6d5e62f8 KH |
443 | executable file and it doesn't end in .exe, copy it to one |
444 | which does. */ | |
252b5132 RH |
445 | if (! link_info.relocateable && command_line.force_exe_suffix) |
446 | { | |
447 | int len = strlen (output_filename); | |
6d5e62f8 | 448 | if (len < 4 |
252b5132 RH |
449 | || (strcasecmp (output_filename + len - 4, ".exe") != 0 |
450 | && strcasecmp (output_filename + len - 4, ".dll") != 0)) | |
451 | { | |
452 | FILE *src; | |
453 | FILE *dst; | |
454 | const int bsize = 4096; | |
455 | char *buf = xmalloc (bsize); | |
456 | int l; | |
457 | char *dst_name = xmalloc (len + 5); | |
458 | strcpy (dst_name, output_filename); | |
459 | strcat (dst_name, ".exe"); | |
460 | src = fopen (output_filename, FOPEN_RB); | |
461 | dst = fopen (dst_name, FOPEN_WB); | |
462 | ||
463 | if (!src) | |
464 | einfo (_("%X%P: unable to open for source of copy `%s'\n"), output_filename); | |
465 | if (!dst) | |
466 | einfo (_("%X%P: unable to open for destination of copy `%s'\n"), dst_name); | |
467 | while ((l = fread (buf, 1, bsize, src)) > 0) | |
468 | { | |
469 | int done = fwrite (buf, 1, l, dst); | |
470 | if (done != l) | |
471 | { | |
472 | einfo (_("%P: Error writing file `%s'\n"), dst_name); | |
473 | } | |
474 | } | |
475 | fclose (src); | |
476 | if (fclose (dst) == EOF) | |
477 | { | |
478 | einfo (_("%P: Error closing file `%s'\n"), dst_name); | |
479 | } | |
480 | free (dst_name); | |
481 | free (buf); | |
482 | } | |
483 | } | |
484 | } | |
485 | ||
486 | END_PROGRESS (program_name); | |
487 | ||
488 | if (config.stats) | |
489 | { | |
490 | #ifdef HAVE_SBRK | |
491 | char *lim = (char *) sbrk (0); | |
492 | #endif | |
493 | long run_time = get_run_time () - start_time; | |
494 | ||
495 | fprintf (stderr, _("%s: total time in link: %ld.%06ld\n"), | |
496 | program_name, run_time / 1000000, run_time % 1000000); | |
497 | #ifdef HAVE_SBRK | |
498 | fprintf (stderr, _("%s: data size %ld\n"), program_name, | |
499 | (long) (lim - (char *) &environ)); | |
500 | #endif | |
501 | } | |
502 | ||
503 | /* Prevent remove_output from doing anything, after a successful link. */ | |
504 | output_filename = NULL; | |
505 | ||
506 | xexit (0); | |
507 | return 0; | |
508 | } | |
509 | ||
510 | /* We need to find any explicitly given emulation in order to initialize the | |
511 | state that's needed by the lex&yacc argument parser (parse_args). */ | |
512 | ||
513 | static char * | |
514 | get_emulation (argc, argv) | |
515 | int argc; | |
516 | char **argv; | |
517 | { | |
518 | char *emulation; | |
519 | int i; | |
520 | ||
521 | emulation = getenv (EMULATION_ENVIRON); | |
522 | if (emulation == NULL) | |
523 | emulation = DEFAULT_EMULATION; | |
524 | ||
525 | for (i = 1; i < argc; i++) | |
526 | { | |
527 | if (!strncmp (argv[i], "-m", 2)) | |
528 | { | |
529 | if (argv[i][2] == '\0') | |
530 | { | |
531 | /* -m EMUL */ | |
532 | if (i < argc - 1) | |
533 | { | |
534 | emulation = argv[i + 1]; | |
535 | i++; | |
536 | } | |
537 | else | |
538 | { | |
6d5e62f8 | 539 | einfo (_("%P%F: missing argument to -m\n")); |
252b5132 RH |
540 | } |
541 | } | |
542 | else if (strcmp (argv[i], "-mips1") == 0 | |
543 | || strcmp (argv[i], "-mips2") == 0 | |
544 | || strcmp (argv[i], "-mips3") == 0 | |
39e5585e EC |
545 | || strcmp (argv[i], "-mips32") == 0 |
546 | || strcmp (argv[i], "-mips64") == 0 | |
d1cf510e NC |
547 | || strcmp (argv[i], "-mips4") == 0 |
548 | || strcmp (argv[i], "-mips5") == 0) | |
252b5132 | 549 | { |
31d677f9 | 550 | /* FIXME: The arguments -mips1, -mips2, -mips3, etc. are |
252b5132 RH |
551 | passed to the linker by some MIPS compilers. They |
552 | generally tell the linker to use a slightly different | |
553 | library path. Perhaps someday these should be | |
554 | implemented as emulations; until then, we just ignore | |
555 | the arguments and hope that nobody ever creates | |
556 | emulations named ips1, ips2 or ips3. */ | |
557 | } | |
558 | else if (strcmp (argv[i], "-m486") == 0) | |
559 | { | |
560 | /* FIXME: The argument -m486 is passed to the linker on | |
561 | some Linux systems. Hope that nobody creates an | |
562 | emulation named 486. */ | |
563 | } | |
564 | else | |
565 | { | |
566 | /* -mEMUL */ | |
567 | emulation = &argv[i][2]; | |
568 | } | |
569 | } | |
570 | } | |
571 | ||
572 | return emulation; | |
573 | } | |
574 | ||
575 | /* If directory DIR contains an "ldscripts" subdirectory, | |
576 | add DIR to the library search path and return true, | |
577 | else return false. */ | |
578 | ||
579 | static boolean | |
580 | check_for_scripts_dir (dir) | |
581 | char *dir; | |
582 | { | |
583 | size_t dirlen; | |
584 | char *buf; | |
585 | struct stat s; | |
586 | boolean res; | |
587 | ||
588 | dirlen = strlen (dir); | |
589 | /* sizeof counts the terminating NUL. */ | |
6d5e62f8 | 590 | buf = (char *) xmalloc (dirlen + sizeof ("/ldscripts")); |
252b5132 RH |
591 | sprintf (buf, "%s/ldscripts", dir); |
592 | ||
593 | res = stat (buf, &s) == 0 && S_ISDIR (s.st_mode); | |
594 | free (buf); | |
595 | if (res) | |
596 | ldfile_add_library_path (dir, false); | |
597 | return res; | |
598 | } | |
599 | ||
600 | /* Set the default directory for finding script files. | |
601 | Libraries will be searched for here too, but that's ok. | |
602 | We look for the "ldscripts" directory in: | |
603 | ||
604 | SCRIPTDIR (passed from Makefile) | |
605 | the dir where this program is (for using it from the build tree) | |
606 | the dir where this program is/../lib (for installing the tool suite elsewhere) */ | |
607 | ||
608 | static void | |
609 | set_scripts_dir () | |
610 | { | |
611 | char *end, *dir; | |
612 | size_t dirlen; | |
613 | ||
614 | if (check_for_scripts_dir (SCRIPTDIR)) | |
6d5e62f8 KH |
615 | /* We've been installed normally. */ |
616 | return; | |
252b5132 RH |
617 | |
618 | /* Look for "ldscripts" in the dir where our binary is. */ | |
619 | end = strrchr (program_name, '/'); | |
5af11cab AM |
620 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
621 | { | |
622 | /* We could have \foo\bar, or /foo\bar. */ | |
623 | char *bslash = strrchr (program_name, '\\'); | |
2ab47eed | 624 | if (end == NULL || (bslash != NULL && bslash > end)) |
5af11cab AM |
625 | end = bslash; |
626 | } | |
627 | #endif | |
252b5132 RH |
628 | |
629 | if (end == NULL) | |
630 | { | |
631 | /* Don't look for ldscripts in the current directory. There is | |
632 | too much potential for confusion. */ | |
633 | return; | |
634 | } | |
635 | ||
636 | dirlen = end - program_name; | |
637 | /* Make a copy of program_name in dir. | |
638 | Leave room for later "/../lib". */ | |
639 | dir = (char *) xmalloc (dirlen + 8); | |
640 | strncpy (dir, program_name, dirlen); | |
641 | dir[dirlen] = '\0'; | |
642 | ||
643 | if (check_for_scripts_dir (dir)) | |
6d5e62f8 KH |
644 | /* Don't free dir. */ |
645 | return; | |
252b5132 RH |
646 | |
647 | /* Look for "ldscripts" in <the dir where our binary is>/../lib. */ | |
648 | strcpy (dir + dirlen, "/../lib"); | |
649 | if (check_for_scripts_dir (dir)) | |
650 | return; | |
651 | ||
6d5e62f8 KH |
652 | /* Well, we tried. */ |
653 | free (dir); | |
252b5132 RH |
654 | } |
655 | ||
656 | void | |
657 | add_ysym (name) | |
658 | const char *name; | |
659 | { | |
660 | if (link_info.notice_hash == (struct bfd_hash_table *) NULL) | |
661 | { | |
662 | link_info.notice_hash = ((struct bfd_hash_table *) | |
663 | xmalloc (sizeof (struct bfd_hash_table))); | |
664 | if (! bfd_hash_table_init_n (link_info.notice_hash, | |
665 | bfd_hash_newfunc, | |
666 | 61)) | |
667 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
6d5e62f8 | 668 | } |
252b5132 RH |
669 | |
670 | if (bfd_hash_lookup (link_info.notice_hash, name, true, true) | |
671 | == (struct bfd_hash_entry *) NULL) | |
672 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); | |
673 | } | |
674 | ||
675 | /* Record a symbol to be wrapped, from the --wrap option. */ | |
676 | ||
677 | void | |
678 | add_wrap (name) | |
679 | const char *name; | |
680 | { | |
681 | if (link_info.wrap_hash == NULL) | |
682 | { | |
683 | link_info.wrap_hash = ((struct bfd_hash_table *) | |
684 | xmalloc (sizeof (struct bfd_hash_table))); | |
685 | if (! bfd_hash_table_init_n (link_info.wrap_hash, | |
686 | bfd_hash_newfunc, | |
687 | 61)) | |
688 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
689 | } | |
690 | if (bfd_hash_lookup (link_info.wrap_hash, name, true, true) == NULL) | |
691 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); | |
692 | } | |
693 | ||
694 | /* Handle the -retain-symbols-file option. */ | |
695 | ||
696 | void | |
697 | add_keepsyms_file (filename) | |
698 | const char *filename; | |
699 | { | |
700 | FILE *file; | |
701 | char *buf; | |
702 | size_t bufsize; | |
703 | int c; | |
704 | ||
705 | if (link_info.strip == strip_some) | |
706 | einfo (_("%X%P: error: duplicate retain-symbols-file\n")); | |
707 | ||
708 | file = fopen (filename, "r"); | |
709 | if (file == (FILE *) NULL) | |
710 | { | |
711 | bfd_set_error (bfd_error_system_call); | |
712 | einfo ("%X%P: %s: %E\n", filename); | |
713 | return; | |
714 | } | |
715 | ||
716 | link_info.keep_hash = ((struct bfd_hash_table *) | |
717 | xmalloc (sizeof (struct bfd_hash_table))); | |
718 | if (! bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc)) | |
719 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
720 | ||
721 | bufsize = 100; | |
722 | buf = (char *) xmalloc (bufsize); | |
723 | ||
724 | c = getc (file); | |
725 | while (c != EOF) | |
726 | { | |
3882b010 | 727 | while (ISSPACE (c)) |
252b5132 RH |
728 | c = getc (file); |
729 | ||
730 | if (c != EOF) | |
731 | { | |
732 | size_t len = 0; | |
733 | ||
3882b010 | 734 | while (! ISSPACE (c) && c != EOF) |
252b5132 RH |
735 | { |
736 | buf[len] = c; | |
737 | ++len; | |
738 | if (len >= bufsize) | |
739 | { | |
740 | bufsize *= 2; | |
741 | buf = xrealloc (buf, bufsize); | |
742 | } | |
743 | c = getc (file); | |
744 | } | |
745 | ||
746 | buf[len] = '\0'; | |
747 | ||
748 | if (bfd_hash_lookup (link_info.keep_hash, buf, true, true) | |
749 | == (struct bfd_hash_entry *) NULL) | |
750 | einfo (_("%P%F: bfd_hash_lookup for insertion failed: %E\n")); | |
751 | } | |
752 | } | |
753 | ||
754 | if (link_info.strip != strip_none) | |
755 | einfo (_("%P: `-retain-symbols-file' overrides `-s' and `-S'\n")); | |
756 | ||
757 | link_info.strip = strip_some; | |
758 | } | |
759 | \f | |
760 | /* Callbacks from the BFD linker routines. */ | |
761 | ||
762 | /* This is called when BFD has decided to include an archive member in | |
763 | a link. */ | |
764 | ||
252b5132 RH |
765 | static boolean |
766 | add_archive_element (info, abfd, name) | |
87f2a346 | 767 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
768 | bfd *abfd; |
769 | const char *name; | |
770 | { | |
771 | lang_input_statement_type *input; | |
772 | ||
773 | input = ((lang_input_statement_type *) | |
774 | xmalloc (sizeof (lang_input_statement_type))); | |
775 | input->filename = abfd->filename; | |
776 | input->local_sym_name = abfd->filename; | |
777 | input->the_bfd = abfd; | |
778 | input->asymbols = NULL; | |
779 | input->next = NULL; | |
780 | input->just_syms_flag = false; | |
781 | input->loaded = false; | |
782 | input->search_dirs_flag = false; | |
783 | ||
784 | /* FIXME: The following fields are not set: header.next, | |
785 | header.type, closed, passive_position, symbol_count, | |
786 | next_real_file, is_archive, target, real. This bit of code is | |
787 | from the old decode_library_subfile function. I don't know | |
788 | whether any of those fields matters. */ | |
789 | ||
790 | ldlang_add_file (input); | |
791 | ||
792 | if (config.map_file != (FILE *) NULL) | |
793 | { | |
794 | static boolean header_printed; | |
795 | struct bfd_link_hash_entry *h; | |
796 | bfd *from; | |
797 | int len; | |
798 | ||
799 | h = bfd_link_hash_lookup (link_info.hash, name, false, false, true); | |
800 | ||
801 | if (h == NULL) | |
802 | from = NULL; | |
803 | else | |
804 | { | |
805 | switch (h->type) | |
806 | { | |
807 | default: | |
808 | from = NULL; | |
809 | break; | |
810 | ||
811 | case bfd_link_hash_defined: | |
812 | case bfd_link_hash_defweak: | |
813 | from = h->u.def.section->owner; | |
814 | break; | |
815 | ||
816 | case bfd_link_hash_undefined: | |
817 | case bfd_link_hash_undefweak: | |
818 | from = h->u.undef.abfd; | |
819 | break; | |
820 | ||
821 | case bfd_link_hash_common: | |
822 | from = h->u.c.p->section->owner; | |
823 | break; | |
824 | } | |
825 | } | |
826 | ||
827 | if (! header_printed) | |
828 | { | |
829 | char buf[100]; | |
830 | ||
e3c8793a | 831 | sprintf (buf, _("Archive member included because of file (symbol)\n\n")); |
252b5132 RH |
832 | minfo ("%s", buf); |
833 | header_printed = true; | |
834 | } | |
835 | ||
836 | if (bfd_my_archive (abfd) == NULL) | |
837 | { | |
838 | minfo ("%s", bfd_get_filename (abfd)); | |
839 | len = strlen (bfd_get_filename (abfd)); | |
840 | } | |
841 | else | |
842 | { | |
843 | minfo ("%s(%s)", bfd_get_filename (bfd_my_archive (abfd)), | |
844 | bfd_get_filename (abfd)); | |
845 | len = (strlen (bfd_get_filename (bfd_my_archive (abfd))) | |
846 | + strlen (bfd_get_filename (abfd)) | |
847 | + 2); | |
848 | } | |
849 | ||
850 | if (len >= 29) | |
851 | { | |
852 | print_nl (); | |
853 | len = 0; | |
854 | } | |
855 | while (len < 30) | |
856 | { | |
857 | print_space (); | |
858 | ++len; | |
859 | } | |
860 | ||
861 | if (from != NULL) | |
862 | minfo ("%B ", from); | |
863 | if (h != NULL) | |
864 | minfo ("(%T)\n", h->root.string); | |
865 | else | |
866 | minfo ("(%s)\n", name); | |
867 | } | |
868 | ||
869 | if (trace_files || trace_file_tries) | |
870 | info_msg ("%I\n", input); | |
871 | ||
872 | return true; | |
873 | } | |
874 | ||
875 | /* This is called when BFD has discovered a symbol which is defined | |
876 | multiple times. */ | |
877 | ||
252b5132 RH |
878 | static boolean |
879 | multiple_definition (info, name, obfd, osec, oval, nbfd, nsec, nval) | |
87f2a346 | 880 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
881 | const char *name; |
882 | bfd *obfd; | |
883 | asection *osec; | |
884 | bfd_vma oval; | |
885 | bfd *nbfd; | |
886 | asection *nsec; | |
887 | bfd_vma nval; | |
888 | { | |
889 | /* If either section has the output_section field set to | |
890 | bfd_abs_section_ptr, it means that the section is being | |
891 | discarded, and this is not really a multiple definition at all. | |
892 | FIXME: It would be cleaner to somehow ignore symbols defined in | |
893 | sections which are being discarded. */ | |
894 | if ((osec->output_section != NULL | |
895 | && ! bfd_is_abs_section (osec) | |
896 | && bfd_is_abs_section (osec->output_section)) | |
897 | || (nsec->output_section != NULL | |
898 | && ! bfd_is_abs_section (nsec) | |
899 | && bfd_is_abs_section (nsec->output_section))) | |
900 | return true; | |
901 | ||
902 | einfo (_("%X%C: multiple definition of `%T'\n"), | |
903 | nbfd, nsec, nval, name); | |
904 | if (obfd != (bfd *) NULL) | |
905 | einfo (_("%D: first defined here\n"), obfd, osec, oval); | |
9b14b192 NC |
906 | |
907 | if (command_line.relax) | |
908 | { | |
909 | einfo (_("%P: Disabling relaxation: it will not work with multiple definitions\n")); | |
910 | command_line.relax = 0; | |
911 | } | |
6d5e62f8 | 912 | |
252b5132 RH |
913 | return true; |
914 | } | |
915 | ||
916 | /* This is called when there is a definition of a common symbol, or | |
917 | when a common symbol is found for a symbol that is already defined, | |
918 | or when two common symbols are found. We only do something if | |
919 | -warn-common was used. */ | |
920 | ||
252b5132 RH |
921 | static boolean |
922 | multiple_common (info, name, obfd, otype, osize, nbfd, ntype, nsize) | |
87f2a346 | 923 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
924 | const char *name; |
925 | bfd *obfd; | |
926 | enum bfd_link_hash_type otype; | |
927 | bfd_vma osize; | |
928 | bfd *nbfd; | |
929 | enum bfd_link_hash_type ntype; | |
930 | bfd_vma nsize; | |
931 | { | |
932 | if (! config.warn_common) | |
933 | return true; | |
934 | ||
935 | if (ntype == bfd_link_hash_defined | |
936 | || ntype == bfd_link_hash_defweak | |
937 | || ntype == bfd_link_hash_indirect) | |
938 | { | |
939 | ASSERT (otype == bfd_link_hash_common); | |
940 | einfo (_("%B: warning: definition of `%T' overriding common\n"), | |
941 | nbfd, name); | |
942 | if (obfd != NULL) | |
943 | einfo (_("%B: warning: common is here\n"), obfd); | |
944 | } | |
945 | else if (otype == bfd_link_hash_defined | |
946 | || otype == bfd_link_hash_defweak | |
947 | || otype == bfd_link_hash_indirect) | |
948 | { | |
949 | ASSERT (ntype == bfd_link_hash_common); | |
950 | einfo (_("%B: warning: common of `%T' overridden by definition\n"), | |
951 | nbfd, name); | |
952 | if (obfd != NULL) | |
953 | einfo (_("%B: warning: defined here\n"), obfd); | |
954 | } | |
955 | else | |
956 | { | |
957 | ASSERT (otype == bfd_link_hash_common && ntype == bfd_link_hash_common); | |
958 | if (osize > nsize) | |
959 | { | |
960 | einfo (_("%B: warning: common of `%T' overridden by larger common\n"), | |
961 | nbfd, name); | |
962 | if (obfd != NULL) | |
963 | einfo (_("%B: warning: larger common is here\n"), obfd); | |
964 | } | |
965 | else if (nsize > osize) | |
966 | { | |
967 | einfo (_("%B: warning: common of `%T' overriding smaller common\n"), | |
968 | nbfd, name); | |
969 | if (obfd != NULL) | |
970 | einfo (_("%B: warning: smaller common is here\n"), obfd); | |
971 | } | |
972 | else | |
973 | { | |
974 | einfo (_("%B: warning: multiple common of `%T'\n"), nbfd, name); | |
975 | if (obfd != NULL) | |
976 | einfo (_("%B: warning: previous common is here\n"), obfd); | |
977 | } | |
978 | } | |
979 | ||
980 | return true; | |
981 | } | |
982 | ||
983 | /* This is called when BFD has discovered a set element. H is the | |
984 | entry in the linker hash table for the set. SECTION and VALUE | |
985 | represent a value which should be added to the set. */ | |
986 | ||
252b5132 RH |
987 | static boolean |
988 | add_to_set (info, h, reloc, abfd, section, value) | |
87f2a346 | 989 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
990 | struct bfd_link_hash_entry *h; |
991 | bfd_reloc_code_real_type reloc; | |
992 | bfd *abfd; | |
993 | asection *section; | |
994 | bfd_vma value; | |
995 | { | |
996 | if (config.warn_constructors) | |
997 | einfo (_("%P: warning: global constructor %s used\n"), | |
998 | h->root.string); | |
999 | ||
1000 | if (! config.build_constructors) | |
1001 | return true; | |
1002 | ||
1003 | ldctor_add_set_entry (h, reloc, (const char *) NULL, section, value); | |
1004 | ||
1005 | if (h->type == bfd_link_hash_new) | |
1006 | { | |
1007 | h->type = bfd_link_hash_undefined; | |
1008 | h->u.undef.abfd = abfd; | |
1009 | /* We don't call bfd_link_add_undef to add this to the list of | |
1010 | undefined symbols because we are going to define it | |
1011 | ourselves. */ | |
1012 | } | |
1013 | ||
1014 | return true; | |
1015 | } | |
1016 | ||
1017 | /* This is called when BFD has discovered a constructor. This is only | |
1018 | called for some object file formats--those which do not handle | |
1019 | constructors in some more clever fashion. This is similar to | |
1020 | adding an element to a set, but less general. */ | |
1021 | ||
1022 | static boolean | |
1023 | constructor_callback (info, constructor, name, abfd, section, value) | |
1024 | struct bfd_link_info *info; | |
1025 | boolean constructor; | |
1026 | const char *name; | |
1027 | bfd *abfd; | |
1028 | asection *section; | |
1029 | bfd_vma value; | |
1030 | { | |
1031 | char *s; | |
1032 | struct bfd_link_hash_entry *h; | |
1033 | char set_name[1 + sizeof "__CTOR_LIST__"]; | |
1034 | ||
1035 | if (config.warn_constructors) | |
1036 | einfo (_("%P: warning: global constructor %s used\n"), name); | |
1037 | ||
1038 | if (! config.build_constructors) | |
1039 | return true; | |
1040 | ||
1041 | /* Ensure that BFD_RELOC_CTOR exists now, so that we can give a | |
1042 | useful error message. */ | |
1043 | if (bfd_reloc_type_lookup (output_bfd, BFD_RELOC_CTOR) == NULL | |
1044 | && (link_info.relocateable | |
1045 | || bfd_reloc_type_lookup (abfd, BFD_RELOC_CTOR) == NULL)) | |
1046 | einfo (_("%P%F: BFD backend error: BFD_RELOC_CTOR unsupported\n")); | |
1047 | ||
1048 | s = set_name; | |
1049 | if (bfd_get_symbol_leading_char (abfd) != '\0') | |
1050 | *s++ = bfd_get_symbol_leading_char (abfd); | |
1051 | if (constructor) | |
1052 | strcpy (s, "__CTOR_LIST__"); | |
1053 | else | |
1054 | strcpy (s, "__DTOR_LIST__"); | |
1055 | ||
1056 | h = bfd_link_hash_lookup (info->hash, set_name, true, true, true); | |
1057 | if (h == (struct bfd_link_hash_entry *) NULL) | |
1058 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); | |
1059 | if (h->type == bfd_link_hash_new) | |
1060 | { | |
1061 | h->type = bfd_link_hash_undefined; | |
1062 | h->u.undef.abfd = abfd; | |
1063 | /* We don't call bfd_link_add_undef to add this to the list of | |
1064 | undefined symbols because we are going to define it | |
1065 | ourselves. */ | |
1066 | } | |
1067 | ||
1068 | ldctor_add_set_entry (h, BFD_RELOC_CTOR, name, section, value); | |
1069 | return true; | |
1070 | } | |
1071 | ||
1072 | /* A structure used by warning_callback to pass information through | |
1073 | bfd_map_over_sections. */ | |
1074 | ||
89cdebba | 1075 | struct warning_callback_info { |
252b5132 RH |
1076 | boolean found; |
1077 | const char *warning; | |
1078 | const char *symbol; | |
1079 | asymbol **asymbols; | |
1080 | }; | |
1081 | ||
1082 | /* This is called when there is a reference to a warning symbol. */ | |
1083 | ||
252b5132 RH |
1084 | static boolean |
1085 | warning_callback (info, warning, symbol, abfd, section, address) | |
87f2a346 | 1086 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
1087 | const char *warning; |
1088 | const char *symbol; | |
1089 | bfd *abfd; | |
1090 | asection *section; | |
1091 | bfd_vma address; | |
1092 | { | |
1093 | /* This is a hack to support warn_multiple_gp. FIXME: This should | |
1094 | have a cleaner interface, but what? */ | |
1095 | if (! config.warn_multiple_gp | |
1096 | && strcmp (warning, "using multiple gp values") == 0) | |
1097 | return true; | |
1098 | ||
1099 | if (section != NULL) | |
1100 | einfo ("%C: %s\n", abfd, section, address, warning); | |
1101 | else if (abfd == NULL) | |
1102 | einfo ("%P: %s\n", warning); | |
1103 | else if (symbol == NULL) | |
1104 | einfo ("%B: %s\n", abfd, warning); | |
1105 | else | |
1106 | { | |
1107 | lang_input_statement_type *entry; | |
1108 | asymbol **asymbols; | |
1109 | struct warning_callback_info info; | |
1110 | ||
1111 | /* Look through the relocs to see if we can find a plausible | |
1112 | address. */ | |
1113 | ||
1114 | entry = (lang_input_statement_type *) abfd->usrdata; | |
1115 | if (entry != NULL && entry->asymbols != NULL) | |
1116 | asymbols = entry->asymbols; | |
1117 | else | |
1118 | { | |
1119 | long symsize; | |
1120 | long symbol_count; | |
1121 | ||
1122 | symsize = bfd_get_symtab_upper_bound (abfd); | |
1123 | if (symsize < 0) | |
1124 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
1125 | asymbols = (asymbol **) xmalloc (symsize); | |
1126 | symbol_count = bfd_canonicalize_symtab (abfd, asymbols); | |
1127 | if (symbol_count < 0) | |
1128 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
1129 | if (entry != NULL) | |
1130 | { | |
1131 | entry->asymbols = asymbols; | |
1132 | entry->symbol_count = symbol_count; | |
1133 | } | |
1134 | } | |
1135 | ||
1136 | info.found = false; | |
1137 | info.warning = warning; | |
1138 | info.symbol = symbol; | |
1139 | info.asymbols = asymbols; | |
1140 | bfd_map_over_sections (abfd, warning_find_reloc, (PTR) &info); | |
1141 | ||
1142 | if (! info.found) | |
1143 | einfo ("%B: %s\n", abfd, warning); | |
1144 | ||
1145 | if (entry == NULL) | |
1146 | free (asymbols); | |
1147 | } | |
1148 | ||
1149 | return true; | |
1150 | } | |
1151 | ||
1152 | /* This is called by warning_callback for each section. It checks the | |
1153 | relocs of the section to see if it can find a reference to the | |
1154 | symbol which triggered the warning. If it can, it uses the reloc | |
1155 | to give an error message with a file and line number. */ | |
1156 | ||
1157 | static void | |
1158 | warning_find_reloc (abfd, sec, iarg) | |
1159 | bfd *abfd; | |
1160 | asection *sec; | |
1161 | PTR iarg; | |
1162 | { | |
1163 | struct warning_callback_info *info = (struct warning_callback_info *) iarg; | |
1164 | long relsize; | |
1165 | arelent **relpp; | |
1166 | long relcount; | |
1167 | arelent **p, **pend; | |
1168 | ||
1169 | if (info->found) | |
1170 | return; | |
1171 | ||
1172 | relsize = bfd_get_reloc_upper_bound (abfd, sec); | |
1173 | if (relsize < 0) | |
1174 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1175 | if (relsize == 0) | |
1176 | return; | |
1177 | ||
1178 | relpp = (arelent **) xmalloc (relsize); | |
1179 | relcount = bfd_canonicalize_reloc (abfd, sec, relpp, info->asymbols); | |
1180 | if (relcount < 0) | |
1181 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1182 | ||
1183 | p = relpp; | |
1184 | pend = p + relcount; | |
1185 | for (; p < pend && *p != NULL; p++) | |
1186 | { | |
1187 | arelent *q = *p; | |
1188 | ||
1189 | if (q->sym_ptr_ptr != NULL | |
1190 | && *q->sym_ptr_ptr != NULL | |
1191 | && strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), info->symbol) == 0) | |
1192 | { | |
1193 | /* We found a reloc for the symbol we are looking for. */ | |
1194 | einfo ("%C: %s\n", abfd, sec, q->address, info->warning); | |
1195 | info->found = true; | |
1196 | break; | |
1197 | } | |
1198 | } | |
1199 | ||
1200 | free (relpp); | |
1201 | } | |
1202 | ||
1203 | /* This is called when an undefined symbol is found. */ | |
1204 | ||
252b5132 | 1205 | static boolean |
b6f29aaa | 1206 | undefined_symbol (info, name, abfd, section, address, fatal) |
87f2a346 | 1207 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
1208 | const char *name; |
1209 | bfd *abfd; | |
1210 | asection *section; | |
1211 | bfd_vma address; | |
a712da20 | 1212 | boolean fatal ATTRIBUTE_UNUSED; |
252b5132 RH |
1213 | { |
1214 | static char *error_name; | |
1215 | static unsigned int error_count; | |
1216 | ||
1217 | #define MAX_ERRORS_IN_A_ROW 5 | |
1218 | ||
1219 | if (config.warn_once) | |
1220 | { | |
1221 | static struct bfd_hash_table *hash; | |
1222 | ||
1223 | /* Only warn once about a particular undefined symbol. */ | |
1224 | ||
1225 | if (hash == NULL) | |
1226 | { | |
1227 | hash = ((struct bfd_hash_table *) | |
1228 | xmalloc (sizeof (struct bfd_hash_table))); | |
1229 | if (! bfd_hash_table_init (hash, bfd_hash_newfunc)) | |
1230 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); | |
1231 | } | |
1232 | ||
1233 | if (bfd_hash_lookup (hash, name, false, false) != NULL) | |
1234 | return true; | |
1235 | ||
1236 | if (bfd_hash_lookup (hash, name, true, true) == NULL) | |
1237 | einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); | |
1238 | } | |
1239 | ||
1240 | /* We never print more than a reasonable number of errors in a row | |
1241 | for a single symbol. */ | |
1242 | if (error_name != (char *) NULL | |
1243 | && strcmp (name, error_name) == 0) | |
1244 | ++error_count; | |
1245 | else | |
1246 | { | |
1247 | error_count = 0; | |
1248 | if (error_name != (char *) NULL) | |
1249 | free (error_name); | |
d1b2b2dc | 1250 | error_name = xstrdup (name); |
252b5132 RH |
1251 | } |
1252 | ||
1253 | if (section != NULL) | |
1254 | { | |
1255 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa L |
1256 | { |
1257 | einfo (_("%C: undefined reference to `%T'\n"), | |
1258 | abfd, section, address, name); | |
1259 | if (fatal) | |
1260 | einfo ("%X"); | |
1261 | } | |
252b5132 RH |
1262 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
1263 | einfo (_("%D: more undefined references to `%T' follow\n"), | |
1264 | abfd, section, address, name); | |
1265 | } | |
1266 | else | |
1267 | { | |
1268 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa L |
1269 | { |
1270 | einfo (_("%B: undefined reference to `%T'\n"), | |
1271 | abfd, name); | |
1272 | if (fatal) | |
1273 | einfo ("%X"); | |
1274 | } | |
252b5132 RH |
1275 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
1276 | einfo (_("%B: more undefined references to `%T' follow\n"), | |
1277 | abfd, name); | |
1278 | } | |
1279 | ||
1280 | return true; | |
1281 | } | |
1282 | ||
1283 | /* This is called when a reloc overflows. */ | |
1284 | ||
252b5132 RH |
1285 | static boolean |
1286 | reloc_overflow (info, name, reloc_name, addend, abfd, section, address) | |
87f2a346 | 1287 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
1288 | const char *name; |
1289 | const char *reloc_name; | |
1290 | bfd_vma addend; | |
1291 | bfd *abfd; | |
1292 | asection *section; | |
1293 | bfd_vma address; | |
1294 | { | |
1295 | if (abfd == (bfd *) NULL) | |
1296 | einfo (_("%P%X: generated")); | |
1297 | else | |
1298 | einfo ("%X%C:", abfd, section, address); | |
1299 | einfo (_(" relocation truncated to fit: %s %T"), reloc_name, name); | |
1300 | if (addend != 0) | |
1301 | einfo ("+%v", addend); | |
1302 | einfo ("\n"); | |
1303 | return true; | |
1304 | } | |
1305 | ||
1306 | /* This is called when a dangerous relocation is made. */ | |
1307 | ||
252b5132 RH |
1308 | static boolean |
1309 | reloc_dangerous (info, message, abfd, section, address) | |
87f2a346 | 1310 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
1311 | const char *message; |
1312 | bfd *abfd; | |
1313 | asection *section; | |
1314 | bfd_vma address; | |
1315 | { | |
1316 | if (abfd == (bfd *) NULL) | |
1317 | einfo (_("%P%X: generated")); | |
1318 | else | |
1319 | einfo ("%X%C:", abfd, section, address); | |
1320 | einfo (_("dangerous relocation: %s\n"), message); | |
1321 | return true; | |
1322 | } | |
1323 | ||
1324 | /* This is called when a reloc is being generated attached to a symbol | |
1325 | that is not being output. */ | |
1326 | ||
252b5132 RH |
1327 | static boolean |
1328 | unattached_reloc (info, name, abfd, section, address) | |
87f2a346 | 1329 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
1330 | const char *name; |
1331 | bfd *abfd; | |
1332 | asection *section; | |
1333 | bfd_vma address; | |
1334 | { | |
1335 | if (abfd == (bfd *) NULL) | |
1336 | einfo (_("%P%X: generated")); | |
1337 | else | |
1338 | einfo ("%X%C:", abfd, section, address); | |
1339 | einfo (_(" reloc refers to symbol `%T' which is not being output\n"), name); | |
1340 | return true; | |
1341 | } | |
1342 | ||
1343 | /* This is called if link_info.notice_all is set, or when a symbol in | |
1344 | link_info.notice_hash is found. Symbols are put in notice_hash | |
1345 | using the -y option. */ | |
1346 | ||
1347 | static boolean | |
1348 | notice (info, name, abfd, section, value) | |
1349 | struct bfd_link_info *info; | |
1350 | const char *name; | |
1351 | bfd *abfd; | |
1352 | asection *section; | |
1353 | bfd_vma value; | |
1354 | { | |
1355 | if (! info->notice_all | |
1356 | || (info->notice_hash != NULL | |
1357 | && bfd_hash_lookup (info->notice_hash, name, false, false) != NULL)) | |
1358 | { | |
1359 | if (bfd_is_und_section (section)) | |
1360 | einfo ("%B: reference to %s\n", abfd, name); | |
1361 | else | |
1362 | einfo ("%B: definition of %s\n", abfd, name); | |
1363 | } | |
1364 | ||
1365 | if (command_line.cref || nocrossref_list != NULL) | |
1366 | add_cref (name, abfd, section, value); | |
1367 | ||
1368 | return true; | |
1369 | } |