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