Commit | Line | Data |
---|---|---|
8594f568 | 1 | /* Main program of GNU linker. |
45408cd7 | 2 | Copyright (C) 1991, 92, 93, 94, 95, 96, 1997 Free Software Foundation, Inc. |
ce4d59e2 | 3 | Written by Steve Chamberlain steve@cygnus.com |
e47bfa63 | 4 | |
2fa0b342 DHW |
5 | This file is part of GLD, the Gnu Linker. |
6 | ||
7 | GLD is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
ce4d59e2 | 9 | the Free Software Foundation; either version 2, or (at your option) |
2fa0b342 DHW |
10 | any later version. |
11 | ||
12 | GLD is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
2ed9fe47 ILT |
18 | along with GLD; see the file COPYING. If not, write to the Free |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
2fa0b342 | 21 | |
2fa0b342 | 22 | #include "bfd.h" |
f177a611 | 23 | #include "sysdep.h" |
b9395be3 | 24 | #include <stdio.h> |
7d6439d9 | 25 | #include <ctype.h> |
d4e5e3c3 | 26 | #include "libiberty.h" |
a735edad | 27 | #include "progress.h" |
b9395be3 | 28 | #include "bfdlink.h" |
2fa0b342 | 29 | |
2fa0b342 DHW |
30 | #include "ld.h" |
31 | #include "ldmain.h" | |
32 | #include "ldmisc.h" | |
33 | #include "ldwrite.h" | |
34 | #include "ldgram.h" | |
fcf276c4 | 35 | #include "ldexp.h" |
2fa0b342 | 36 | #include "ldlang.h" |
8c514453 | 37 | #include "ldemul.h" |
2fa0b342 DHW |
38 | #include "ldlex.h" |
39 | #include "ldfile.h" | |
c611e285 | 40 | #include "ldctor.h" |
9d1fe8a4 | 41 | |
922018a1 | 42 | /* Somewhere above, sys/stat.h got included . . . . */ |
d723cd17 DM |
43 | #if !defined(S_ISDIR) && defined(S_IFDIR) |
44 | #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) | |
45 | #endif | |
46 | ||
47 | #include <string.h> | |
48 | ||
45408cd7 ILT |
49 | #ifdef HAVE_SBRK |
50 | #ifdef NEED_DECLARATION_SBRK | |
51 | extern PTR sbrk (); | |
52 | #endif | |
53 | #endif | |
54 | ||
fcf276c4 ILT |
55 | static char *get_emulation PARAMS ((int, char **)); |
56 | static void set_scripts_dir PARAMS ((void)); | |
e47bfa63 | 57 | |
2fa0b342 DHW |
58 | /* EXPORTS */ |
59 | ||
60 | char *default_target; | |
fcf276c4 | 61 | const char *output_filename = "a.out"; |
e47bfa63 | 62 | |
2fa0b342 DHW |
63 | /* Name this program was invoked by. */ |
64 | char *program_name; | |
65 | ||
66 | /* The file that we're creating */ | |
b6316534 | 67 | bfd *output_bfd = 0; |
2fa0b342 | 68 | |
173a0c3d DM |
69 | /* Set by -G argument, for MIPS ECOFF target. */ |
70 | int g_switch_value = 8; | |
71 | ||
2fa0b342 DHW |
72 | /* Nonzero means print names of input files as processed. */ |
73 | boolean trace_files; | |
74 | ||
bbd2521f DM |
75 | /* Nonzero means same, but note open failures, too. */ |
76 | boolean trace_file_tries; | |
77 | ||
7b40f2b1 DM |
78 | /* Nonzero means version number was printed, so exit successfully |
79 | instead of complaining if no input files are given. */ | |
80 | boolean version_printed; | |
81 | ||
f2f55b16 ILT |
82 | /* Nonzero means link in every member of an archive. */ |
83 | boolean whole_archive; | |
84 | ||
2fa0b342 | 85 | args_type command_line; |
173a0c3d | 86 | |
2fa0b342 | 87 | ld_config_type config; |
9f629407 ILT |
88 | |
89 | static boolean check_for_scripts_dir PARAMS ((char *dir)); | |
b9395be3 ILT |
90 | static boolean add_archive_element PARAMS ((struct bfd_link_info *, bfd *, |
91 | const char *)); | |
92 | static boolean multiple_definition PARAMS ((struct bfd_link_info *, | |
93 | const char *, | |
94 | bfd *, asection *, bfd_vma, | |
95 | bfd *, asection *, bfd_vma)); | |
96 | static boolean multiple_common PARAMS ((struct bfd_link_info *, | |
97 | const char *, bfd *, | |
98 | enum bfd_link_hash_type, bfd_vma, | |
99 | bfd *, enum bfd_link_hash_type, | |
100 | bfd_vma)); | |
101 | static boolean add_to_set PARAMS ((struct bfd_link_info *, | |
102 | struct bfd_link_hash_entry *, | |
2a9fa50c | 103 | bfd_reloc_code_real_type, |
b9395be3 ILT |
104 | bfd *, asection *, bfd_vma)); |
105 | static boolean constructor_callback PARAMS ((struct bfd_link_info *, | |
106 | boolean constructor, | |
b9395be3 ILT |
107 | const char *name, |
108 | bfd *, asection *, bfd_vma)); | |
109 | static boolean warning_callback PARAMS ((struct bfd_link_info *, | |
7d6439d9 ILT |
110 | const char *, const char *, bfd *, |
111 | asection *, bfd_vma)); | |
112 | static void warning_find_reloc PARAMS ((bfd *, asection *, PTR)); | |
b9395be3 ILT |
113 | static boolean undefined_symbol PARAMS ((struct bfd_link_info *, |
114 | const char *, bfd *, | |
115 | asection *, bfd_vma)); | |
5dad4c97 ILT |
116 | static boolean reloc_overflow PARAMS ((struct bfd_link_info *, const char *, |
117 | const char *, bfd_vma, | |
118 | bfd *, asection *, bfd_vma)); | |
b9395be3 ILT |
119 | static boolean reloc_dangerous PARAMS ((struct bfd_link_info *, const char *, |
120 | bfd *, asection *, bfd_vma)); | |
121 | static boolean unattached_reloc PARAMS ((struct bfd_link_info *, | |
122 | const char *, bfd *, asection *, | |
123 | bfd_vma)); | |
cd09553a ILT |
124 | static boolean notice PARAMS ((struct bfd_link_info *, const char *, |
125 | bfd *, asection *, bfd_vma)); | |
b9395be3 ILT |
126 | |
127 | static struct bfd_link_callbacks link_callbacks = | |
128 | { | |
129 | add_archive_element, | |
130 | multiple_definition, | |
131 | multiple_common, | |
132 | add_to_set, | |
133 | constructor_callback, | |
134 | warning_callback, | |
135 | undefined_symbol, | |
136 | reloc_overflow, | |
137 | reloc_dangerous, | |
138 | unattached_reloc, | |
cd09553a | 139 | notice |
b9395be3 ILT |
140 | }; |
141 | ||
142 | struct bfd_link_info link_info; | |
173a0c3d | 143 | \f |
0b2f8d2e DM |
144 | static void |
145 | remove_output () | |
146 | { | |
147 | if (output_filename) | |
148 | { | |
149 | if (output_bfd && output_bfd->iostream) | |
150 | fclose((FILE *)(output_bfd->iostream)); | |
151 | if (delete_output_file_on_failure) | |
152 | unlink (output_filename); | |
153 | } | |
154 | } | |
155 | ||
9f629407 | 156 | int |
2fa0b342 | 157 | main (argc, argv) |
2fa0b342 | 158 | int argc; |
9f629407 | 159 | char **argv; |
2fa0b342 DHW |
160 | { |
161 | char *emulation; | |
8594f568 | 162 | long start_time = get_run_time (); |
e47bfa63 | 163 | |
2fa0b342 | 164 | program_name = argv[0]; |
5bcb7f28 | 165 | xmalloc_set_program_name (program_name); |
99fe4553 | 166 | |
a735edad ILT |
167 | START_PROGRESS (program_name, 0); |
168 | ||
e47bfa63 | 169 | bfd_init (); |
bfbdc80f | 170 | |
28113e82 ILT |
171 | bfd_set_error_program_name (program_name); |
172 | ||
5bcb7f28 | 173 | xatexit (remove_output); |
0b2f8d2e | 174 | |
2fa0b342 | 175 | /* Initialize the data about options. */ |
7b40f2b1 | 176 | trace_files = trace_file_tries = version_printed = false; |
f2f55b16 | 177 | whole_archive = false; |
b9395be3 | 178 | config.build_constructors = true; |
2a9fa50c | 179 | config.dynamic_link = false; |
2fa0b342 | 180 | command_line.force_common_definition = false; |
7fb9ca5f | 181 | command_line.interpreter = NULL; |
cc23cc69 | 182 | command_line.rpath = NULL; |
2fa0b342 | 183 | |
b9395be3 ILT |
184 | link_info.callbacks = &link_callbacks; |
185 | link_info.relocateable = false; | |
64887de2 | 186 | link_info.shared = false; |
4551e108 | 187 | link_info.symbolic = false; |
7d6439d9 | 188 | link_info.static_link = false; |
6799c638 | 189 | link_info.traditional_format = false; |
b9395be3 ILT |
190 | link_info.strip = strip_none; |
191 | link_info.discard = discard_none; | |
b9395be3 ILT |
192 | link_info.keep_memory = true; |
193 | link_info.input_bfds = NULL; | |
194 | link_info.create_object_symbols_section = NULL; | |
195 | link_info.hash = NULL; | |
196 | link_info.keep_hash = NULL; | |
cd09553a | 197 | link_info.notice_all = false; |
b9395be3 | 198 | link_info.notice_hash = NULL; |
e3d73386 | 199 | link_info.wrap_hash = NULL; |
7d6439d9 | 200 | |
e47bfa63 | 201 | ldfile_add_arch (""); |
a72f4e5f | 202 | |
2fa0b342 DHW |
203 | config.make_executable = true; |
204 | force_make_executable = false; | |
ce4d59e2 SC |
205 | config.magic_demand_paged = true; |
206 | config.text_read_only = true; | |
2fa0b342 | 207 | config.make_executable = true; |
1418c83b | 208 | |
d723cd17 | 209 | emulation = get_emulation (argc, argv); |
e47bfa63 SC |
210 | ldemul_choose_mode (emulation); |
211 | default_target = ldemul_choose_target (); | |
212 | lang_init (); | |
213 | ldemul_before_parse (); | |
2fa0b342 | 214 | lang_has_input_file = false; |
e47bfa63 | 215 | parse_args (argc, argv); |
f3739bc3 | 216 | |
7d6439d9 ILT |
217 | ldemul_set_symbols (); |
218 | ||
2a9fa50c ILT |
219 | if (link_info.relocateable) |
220 | { | |
221 | if (command_line.relax) | |
222 | einfo ("%P%F: -relax and -r may not be used together\n"); | |
64887de2 ILT |
223 | if (link_info.shared) |
224 | einfo ("%P%F: -r and -shared may not be used together\n"); | |
2a9fa50c ILT |
225 | } |
226 | ||
8ed88239 ILT |
227 | /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I |
228 | don't see how else this can be handled, since in this case we | |
229 | must preserve all externally visible symbols. */ | |
230 | if (link_info.relocateable && link_info.strip == strip_all) | |
231 | { | |
232 | link_info.strip = strip_debugger; | |
233 | if (link_info.discard == discard_none) | |
234 | link_info.discard = discard_all; | |
235 | } | |
236 | ||
973e421e ILT |
237 | /* This essentially adds another -L directory so this must be done after |
238 | the -L's in argv have been processed. */ | |
239 | set_scripts_dir (); | |
240 | ||
bbd2521f DM |
241 | if (had_script == false) |
242 | { | |
243 | /* Read the emulation's appropriate default script. */ | |
2a28d8b0 DM |
244 | int isfile; |
245 | char *s = ldemul_get_script (&isfile); | |
246 | ||
247 | if (isfile) | |
d4e5e3c3 | 248 | ldfile_open_command_file (s); |
2a28d8b0 | 249 | else |
22c41f00 ILT |
250 | { |
251 | if (trace_file_tries) | |
252 | { | |
253 | info_msg ("using internal linker script:\n"); | |
254 | info_msg ("==================================================\n"); | |
255 | info_msg (s); | |
256 | info_msg ("\n==================================================\n"); | |
257 | } | |
7d6439d9 | 258 | lex_string = s; |
22c41f00 ILT |
259 | lex_redirect (s); |
260 | } | |
d4e5e3c3 DM |
261 | parser_input = input_script; |
262 | yyparse (); | |
7d6439d9 | 263 | lex_string = NULL; |
bbd2521f DM |
264 | } |
265 | ||
e47bfa63 | 266 | lang_final (); |
9d1fe8a4 | 267 | |
e47bfa63 SC |
268 | if (lang_has_input_file == false) |
269 | { | |
7b40f2b1 | 270 | if (version_printed) |
0b2f8d2e | 271 | xexit (0); |
973e421e | 272 | einfo ("%P%F: no input files\n"); |
870f54b2 | 273 | } |
2fa0b342 | 274 | |
bbd2521f DM |
275 | if (trace_files) |
276 | { | |
973e421e | 277 | info_msg ("%P: mode %s\n", emulation); |
bbd2521f DM |
278 | } |
279 | ||
e47bfa63 | 280 | ldemul_after_parse (); |
870f54b2 | 281 | |
9d1fe8a4 | 282 | |
e47bfa63 | 283 | if (config.map_filename) |
870f54b2 | 284 | { |
e47bfa63 | 285 | if (strcmp (config.map_filename, "-") == 0) |
2e2bf962 | 286 | { |
e47bfa63 | 287 | config.map_file = stdout; |
2e2bf962 | 288 | } |
e47bfa63 SC |
289 | else |
290 | { | |
291 | config.map_file = fopen (config.map_filename, FOPEN_WT); | |
292 | if (config.map_file == (FILE *) NULL) | |
293 | { | |
de71eb77 | 294 | bfd_set_error (bfd_error_system_call); |
bbd2521f | 295 | einfo ("%P%F: cannot open map file %s: %E\n", |
e47bfa63 SC |
296 | config.map_filename); |
297 | } | |
298 | } | |
299 | } | |
870f54b2 | 300 | |
2e2bf962 | 301 | |
e47bfa63 | 302 | lang_process (); |
2fa0b342 | 303 | |
2fa0b342 DHW |
304 | /* Print error messages for any missing symbols, for any warning |
305 | symbols, and possibly multiple definitions */ | |
306 | ||
2fa0b342 | 307 | |
e47bfa63 SC |
308 | if (config.text_read_only) |
309 | { | |
310 | /* Look for a text section and mark the readonly attribute in it */ | |
311 | asection *found = bfd_get_section_by_name (output_bfd, ".text"); | |
312 | ||
313 | if (found != (asection *) NULL) | |
314 | { | |
315 | found->flags |= SEC_READONLY; | |
316 | } | |
3e4c643d | 317 | } |
2fa0b342 | 318 | |
a735edad | 319 | if (link_info.relocateable) |
f3739bc3 | 320 | output_bfd->flags &= ~EXEC_P; |
a72f4e5f | 321 | else |
f3739bc3 | 322 | output_bfd->flags |= EXEC_P; |
b257477f | 323 | |
f3739bc3 | 324 | ldwrite (); |
b257477f | 325 | |
0cacbcbe ILT |
326 | if (config.map_file != NULL) |
327 | lang_map (); | |
cd09553a ILT |
328 | if (command_line.cref) |
329 | output_cref (config.map_file != NULL ? config.map_file : stdout); | |
582dd77f ILT |
330 | if (nocrossref_list != NULL) |
331 | check_nocrossrefs (); | |
0cacbcbe | 332 | |
f3739bc3 SC |
333 | /* Even if we're producing relocateable output, some non-fatal errors should |
334 | be reported in the exit status. (What non-fatal errors, if any, do we | |
335 | want to ignore for relocateable output?) */ | |
a72f4e5f | 336 | |
f3739bc3 SC |
337 | if (config.make_executable == false && force_make_executable == false) |
338 | { | |
339 | if (trace_files == true) | |
e47bfa63 | 340 | { |
973e421e | 341 | einfo ("%P: link errors found, deleting executable `%s'\n", |
f3739bc3 | 342 | output_filename); |
e47bfa63 | 343 | } |
a72f4e5f | 344 | |
cd09553a | 345 | /* The file will be removed by remove_output. */ |
a72f4e5f | 346 | |
0b2f8d2e | 347 | xexit (1); |
f3739bc3 SC |
348 | } |
349 | else | |
350 | { | |
2a9fa50c ILT |
351 | if (! bfd_close (output_bfd)) |
352 | einfo ("%F%B: final close failed: %E\n", output_bfd); | |
cd09553a ILT |
353 | |
354 | /* If the --force-exe-suffix is enabled, and we're making an | |
355 | executable file and it doesn't end in .exe, copy it to one which does. */ | |
356 | ||
357 | if (! link_info.relocateable && command_line.force_exe_suffix) | |
358 | { | |
359 | int len = strlen (output_filename); | |
360 | if (len < 4 | |
361 | || (strcasecmp (output_filename + len - 4, ".exe") != 0 | |
362 | && strcasecmp (output_filename + len - 4, ".dll") != 0)) | |
363 | { | |
364 | FILE *src; | |
365 | FILE *dst; | |
366 | const int bsize = 4096; | |
367 | char *buf = xmalloc (bsize); | |
368 | int l; | |
369 | char *dst_name = xmalloc (len + 5); | |
370 | strcpy (dst_name, output_filename); | |
371 | strcat (dst_name, ".exe"); | |
372 | src = fopen (output_filename, FOPEN_RB); | |
373 | dst = fopen (dst_name, FOPEN_WB); | |
374 | ||
375 | if (!src) | |
376 | einfo ("%X%P: unable to open for source of copy `%s'\n", output_filename); | |
377 | if (!dst) | |
378 | einfo ("%X%P: unable to open for destination of copy `%s'\n", dst_name); | |
379 | while ((l = fread (buf, 1, bsize, src)) > 0) | |
380 | { | |
381 | int done = fwrite (buf, 1, l, dst); | |
382 | if (done != l) | |
383 | { | |
384 | einfo ("%P: Error writing file `%s'\n", dst_name); | |
385 | } | |
386 | } | |
387 | fclose (src); | |
388 | if (!fclose (dst)) | |
389 | { | |
390 | einfo ("%P: Error closing file `%s'\n", dst_name); | |
391 | } | |
392 | free (dst_name); | |
393 | free (buf); | |
394 | } | |
395 | } | |
f3739bc3 | 396 | } |
2fa0b342 | 397 | |
a735edad ILT |
398 | END_PROGRESS (program_name); |
399 | ||
b9395be3 ILT |
400 | if (config.stats) |
401 | { | |
402 | extern char **environ; | |
eac6290c | 403 | #ifdef HAVE_SBRK |
b9395be3 | 404 | char *lim = (char *) sbrk (0); |
de71eb77 | 405 | #endif |
8594f568 | 406 | long run_time = get_run_time () - start_time; |
b9395be3 | 407 | |
5bcb7f28 | 408 | fprintf (stderr, "%s: total time in link: %ld.%06ld\n", |
8594f568 | 409 | program_name, run_time / 1000000, run_time % 1000000); |
eac6290c | 410 | #ifdef HAVE_SBRK |
b9395be3 ILT |
411 | fprintf (stderr, "%s: data size %ld\n", program_name, |
412 | (long) (lim - (char *) &environ)); | |
de71eb77 | 413 | #endif |
b9395be3 ILT |
414 | } |
415 | ||
52a8ebfe DM |
416 | /* Prevent remove_output from doing anything, after a successful link. */ |
417 | output_filename = NULL; | |
418 | ||
0b2f8d2e | 419 | xexit (0); |
9f629407 | 420 | return 0; |
d723cd17 DM |
421 | } |
422 | ||
423 | /* We need to find any explicitly given emulation in order to initialize the | |
424 | state that's needed by the lex&yacc argument parser (parse_args). */ | |
425 | ||
426 | static char * | |
427 | get_emulation (argc, argv) | |
428 | int argc; | |
429 | char **argv; | |
430 | { | |
431 | char *emulation; | |
432 | int i; | |
433 | ||
45408cd7 | 434 | emulation = getenv (EMULATION_ENVIRON); |
d723cd17 DM |
435 | if (emulation == NULL) |
436 | emulation = DEFAULT_EMULATION; | |
d723cd17 DM |
437 | |
438 | for (i = 1; i < argc; i++) | |
439 | { | |
440 | if (!strncmp (argv[i], "-m", 2)) | |
441 | { | |
442 | if (argv[i][2] == '\0') | |
443 | { | |
444 | /* -m EMUL */ | |
445 | if (i < argc - 1) | |
446 | { | |
447 | emulation = argv[i + 1]; | |
448 | i++; | |
449 | } | |
450 | else | |
451 | { | |
973e421e | 452 | einfo("%P%F: missing argument to -m\n"); |
d723cd17 DM |
453 | } |
454 | } | |
973e421e ILT |
455 | else if (strcmp (argv[i], "-mips1") == 0 |
456 | || strcmp (argv[i], "-mips2") == 0 | |
45408cd7 ILT |
457 | || strcmp (argv[i], "-mips3") == 0 |
458 | || strcmp (argv[i], "-mips4") == 0) | |
973e421e ILT |
459 | { |
460 | /* FIXME: The arguments -mips1, -mips2 and -mips3 are | |
461 | passed to the linker by some MIPS compilers. They | |
462 | generally tell the linker to use a slightly different | |
463 | library path. Perhaps someday these should be | |
464 | implemented as emulations; until then, we just ignore | |
465 | the arguments and hope that nobody ever creates | |
466 | emulations named ips1, ips2 or ips3. */ | |
467 | } | |
cbbf9608 ILT |
468 | else if (strcmp (argv[i], "-m486") == 0) |
469 | { | |
470 | /* FIXME: The argument -m486 is passed to the linker on | |
471 | some Linux systems. Hope that nobody creates an | |
472 | emulation named 486. */ | |
473 | } | |
d723cd17 DM |
474 | else |
475 | { | |
476 | /* -mEMUL */ | |
477 | emulation = &argv[i][2]; | |
478 | } | |
479 | } | |
480 | } | |
481 | ||
482 | return emulation; | |
483 | } | |
484 | ||
485 | /* If directory DIR contains an "ldscripts" subdirectory, | |
486 | add DIR to the library search path and return true, | |
487 | else return false. */ | |
488 | ||
489 | static boolean | |
490 | check_for_scripts_dir (dir) | |
491 | char *dir; | |
492 | { | |
493 | size_t dirlen; | |
494 | char *buf; | |
495 | struct stat s; | |
496 | boolean res; | |
497 | ||
498 | dirlen = strlen (dir); | |
499 | /* sizeof counts the terminating NUL. */ | |
0b2f8d2e | 500 | buf = (char *) xmalloc (dirlen + sizeof("/ldscripts")); |
d723cd17 DM |
501 | sprintf (buf, "%s/ldscripts", dir); |
502 | ||
503 | res = stat (buf, &s) == 0 && S_ISDIR (s.st_mode); | |
f4208462 | 504 | free (buf); |
d723cd17 | 505 | if (res) |
0cd82d00 | 506 | ldfile_add_library_path (dir, false); |
d723cd17 DM |
507 | return res; |
508 | } | |
509 | ||
510 | /* Set the default directory for finding script files. | |
f4208462 DM |
511 | Libraries will be searched for here too, but that's ok. |
512 | We look for the "ldscripts" directory in: | |
513 | ||
f4208462 | 514 | SCRIPTDIR (passed from Makefile) |
bbd2521f DM |
515 | the dir where this program is (for using it from the build tree) |
516 | the dir where this program is/../lib (for installing the tool suite elsewhere) */ | |
d723cd17 DM |
517 | |
518 | static void | |
519 | set_scripts_dir () | |
520 | { | |
f4208462 DM |
521 | char *end, *dir; |
522 | size_t dirlen; | |
523 | ||
d723cd17 | 524 | if (check_for_scripts_dir (SCRIPTDIR)) |
f4208462 | 525 | return; /* We've been installed normally. */ |
d723cd17 DM |
526 | |
527 | /* Look for "ldscripts" in the dir where our binary is. */ | |
528 | end = strrchr (program_name, '/'); | |
7d6439d9 ILT |
529 | |
530 | if (end == NULL) | |
bbd2521f | 531 | { |
7d6439d9 ILT |
532 | /* Don't look for ldscripts in the current directory. There is |
533 | too much potential for confusion. */ | |
534 | return; | |
bbd2521f | 535 | } |
f4208462 | 536 | |
7d6439d9 ILT |
537 | dirlen = end - program_name; |
538 | /* Make a copy of program_name in dir. | |
539 | Leave room for later "/../lib". */ | |
540 | dir = (char *) xmalloc (dirlen + 8); | |
541 | strncpy (dir, program_name, dirlen); | |
542 | dir[dirlen] = '\0'; | |
543 | ||
f4208462 DM |
544 | if (check_for_scripts_dir (dir)) |
545 | return; /* Don't free dir. */ | |
546 | ||
547 | /* Look for "ldscripts" in <the dir where our binary is>/../lib. */ | |
548 | strcpy (dir + dirlen, "/../lib"); | |
549 | if (check_for_scripts_dir (dir)) | |
550 | return; | |
551 | ||
552 | free (dir); /* Well, we tried. */ | |
d723cd17 | 553 | } |
2fa0b342 | 554 | |
e47bfa63 | 555 | void |
b9395be3 ILT |
556 | add_ysym (name) |
557 | const char *name; | |
2fa0b342 | 558 | { |
b9395be3 ILT |
559 | if (link_info.notice_hash == (struct bfd_hash_table *) NULL) |
560 | { | |
561 | link_info.notice_hash = ((struct bfd_hash_table *) | |
0b2f8d2e | 562 | xmalloc (sizeof (struct bfd_hash_table))); |
b9395be3 ILT |
563 | if (! bfd_hash_table_init_n (link_info.notice_hash, |
564 | bfd_hash_newfunc, | |
565 | 61)) | |
566 | einfo ("%P%F: bfd_hash_table_init failed: %E\n"); | |
567 | } | |
568 | ||
569 | if (bfd_hash_lookup (link_info.notice_hash, name, true, true) | |
570 | == (struct bfd_hash_entry *) NULL) | |
571 | einfo ("%P%F: bfd_hash_lookup failed: %E\n"); | |
2fa0b342 | 572 | } |
e47bfa63 | 573 | |
28113e82 ILT |
574 | /* Record a symbol to be wrapped, from the --wrap option. */ |
575 | ||
576 | void | |
577 | add_wrap (name) | |
578 | const char *name; | |
579 | { | |
580 | if (link_info.wrap_hash == NULL) | |
581 | { | |
582 | link_info.wrap_hash = ((struct bfd_hash_table *) | |
583 | xmalloc (sizeof (struct bfd_hash_table))); | |
584 | if (! bfd_hash_table_init_n (link_info.wrap_hash, | |
585 | bfd_hash_newfunc, | |
586 | 61)) | |
587 | einfo ("%P%F: bfd_hash_table_init failed: %E\n"); | |
588 | } | |
589 | if (bfd_hash_lookup (link_info.wrap_hash, name, true, true) == NULL) | |
590 | einfo ("%P%F: bfd_hash_lookup failed: %E\n"); | |
591 | } | |
592 | ||
b9395be3 | 593 | /* Handle the -retain-symbols-file option. */ |
2fa0b342 | 594 | |
2fa0b342 | 595 | void |
b9395be3 ILT |
596 | add_keepsyms_file (filename) |
597 | const char *filename; | |
2fa0b342 | 598 | { |
b9395be3 ILT |
599 | FILE *file; |
600 | char *buf; | |
601 | size_t bufsize; | |
602 | int c; | |
2fa0b342 | 603 | |
b9395be3 ILT |
604 | if (link_info.strip == strip_some) |
605 | einfo ("%X%P: error: duplicate retain-symbols-file\n"); | |
3e4c643d | 606 | |
b9395be3 ILT |
607 | file = fopen (filename, "r"); |
608 | if (file == (FILE *) NULL) | |
e47bfa63 | 609 | { |
5bcb7f28 | 610 | bfd_set_error (bfd_error_system_call); |
7d6439d9 | 611 | einfo ("%X%P: %s: %E\n", filename); |
b9395be3 | 612 | return; |
be1627d3 | 613 | } |
be1627d3 | 614 | |
b9395be3 | 615 | link_info.keep_hash = ((struct bfd_hash_table *) |
0b2f8d2e | 616 | xmalloc (sizeof (struct bfd_hash_table))); |
b9395be3 ILT |
617 | if (! bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc)) |
618 | einfo ("%P%F: bfd_hash_table_init failed: %E\n"); | |
2fa0b342 | 619 | |
b9395be3 | 620 | bufsize = 100; |
0b2f8d2e | 621 | buf = (char *) xmalloc (bufsize); |
c611e285 | 622 | |
b9395be3 ILT |
623 | c = getc (file); |
624 | while (c != EOF) | |
29f33467 | 625 | { |
b9395be3 ILT |
626 | while (isspace (c)) |
627 | c = getc (file); | |
e47bfa63 | 628 | |
b9395be3 | 629 | if (c != EOF) |
29f33467 | 630 | { |
b9395be3 | 631 | size_t len = 0; |
8a045e50 | 632 | |
b9395be3 | 633 | while (! isspace (c) && c != EOF) |
29f33467 | 634 | { |
b9395be3 ILT |
635 | buf[len] = c; |
636 | ++len; | |
637 | if (len >= bufsize) | |
29f33467 | 638 | { |
b9395be3 | 639 | bufsize *= 2; |
0b2f8d2e | 640 | buf = xrealloc (buf, bufsize); |
29f33467 | 641 | } |
b9395be3 | 642 | c = getc (file); |
29f33467 | 643 | } |
81016051 | 644 | |
b9395be3 ILT |
645 | buf[len] = '\0'; |
646 | ||
647 | if (bfd_hash_lookup (link_info.keep_hash, buf, true, true) | |
648 | == (struct bfd_hash_entry *) NULL) | |
7d6439d9 | 649 | einfo ("%P%F: bfd_hash_lookup for insertion failed: %E\n"); |
29f33467 | 650 | } |
e47bfa63 | 651 | } |
2fa0b342 | 652 | |
b9395be3 ILT |
653 | if (link_info.strip != strip_none) |
654 | einfo ("%P: `-retain-symbols-file' overrides `-s' and `-S'\n"); | |
8a045e50 | 655 | |
b9395be3 ILT |
656 | link_info.strip = strip_some; |
657 | } | |
658 | \f | |
659 | /* Callbacks from the BFD linker routines. */ | |
2fa0b342 | 660 | |
b9395be3 ILT |
661 | /* This is called when BFD has decided to include an archive member in |
662 | a link. */ | |
2fa0b342 | 663 | |
b9395be3 ILT |
664 | /*ARGSUSED*/ |
665 | static boolean | |
666 | add_archive_element (info, abfd, name) | |
667 | struct bfd_link_info *info; | |
668 | bfd *abfd; | |
669 | const char *name; | |
2fa0b342 | 670 | { |
b9395be3 ILT |
671 | lang_input_statement_type *input; |
672 | ||
673 | input = ((lang_input_statement_type *) | |
7d6439d9 | 674 | xmalloc (sizeof (lang_input_statement_type))); |
b9395be3 ILT |
675 | input->filename = abfd->filename; |
676 | input->local_sym_name = abfd->filename; | |
677 | input->the_bfd = abfd; | |
678 | input->asymbols = NULL; | |
b9395be3 ILT |
679 | input->next = NULL; |
680 | input->just_syms_flag = false; | |
681 | input->loaded = false; | |
210c52ac | 682 | input->search_dirs_flag = false; |
b9395be3 ILT |
683 | |
684 | /* FIXME: The following fields are not set: header.next, | |
210c52ac | 685 | header.type, closed, passive_position, symbol_count, |
cd09553a ILT |
686 | next_real_file, is_archive, target, real. This bit of code is |
687 | from the old decode_library_subfile function. I don't know | |
688 | whether any of those fields matters. */ | |
b9395be3 ILT |
689 | |
690 | ldlang_add_file (input); | |
691 | ||
2a9fa50c | 692 | if (config.map_file != (FILE *) NULL) |
efa6c497 ILT |
693 | { |
694 | static boolean header_printed; | |
695 | struct bfd_link_hash_entry *h; | |
696 | bfd *from; | |
697 | int len; | |
698 | ||
699 | h = bfd_link_hash_lookup (link_info.hash, name, false, false, true); | |
700 | ||
701 | if (h == NULL) | |
702 | from = NULL; | |
703 | else | |
704 | { | |
705 | switch (h->type) | |
706 | { | |
707 | default: | |
708 | from = NULL; | |
709 | break; | |
710 | ||
711 | case bfd_link_hash_defined: | |
712 | case bfd_link_hash_defweak: | |
713 | from = h->u.def.section->owner; | |
714 | break; | |
715 | ||
716 | case bfd_link_hash_undefined: | |
717 | case bfd_link_hash_undefweak: | |
718 | from = h->u.undef.abfd; | |
719 | break; | |
720 | ||
721 | case bfd_link_hash_common: | |
722 | from = h->u.c.p->section->owner; | |
723 | break; | |
724 | } | |
725 | } | |
726 | ||
727 | if (! header_printed) | |
728 | { | |
729 | char buf[100]; | |
730 | ||
731 | sprintf (buf, "%-29s %s\n\n", "Archive member included", | |
732 | "because of file (symbol)"); | |
733 | minfo ("%s", buf); | |
734 | header_printed = true; | |
735 | } | |
736 | ||
737 | if (bfd_my_archive (abfd) == NULL) | |
738 | { | |
739 | minfo ("%s", bfd_get_filename (abfd)); | |
740 | len = strlen (bfd_get_filename (abfd)); | |
741 | } | |
742 | else | |
743 | { | |
744 | minfo ("%s(%s)", bfd_get_filename (bfd_my_archive (abfd)), | |
745 | bfd_get_filename (abfd)); | |
746 | len = (strlen (bfd_get_filename (bfd_my_archive (abfd))) | |
747 | + strlen (bfd_get_filename (abfd)) | |
748 | + 2); | |
749 | } | |
750 | ||
751 | if (len >= 29) | |
752 | { | |
753 | print_nl (); | |
754 | len = 0; | |
755 | } | |
756 | while (len < 30) | |
757 | { | |
758 | print_space (); | |
759 | ++len; | |
760 | } | |
761 | ||
762 | if (from != NULL) | |
763 | minfo ("%B ", from); | |
764 | if (h != NULL) | |
765 | minfo ("(%T)\n", h->root.string); | |
766 | else | |
767 | minfo ("(%s)\n", name); | |
768 | } | |
b9395be3 | 769 | |
5dad4c97 ILT |
770 | if (trace_files || trace_file_tries) |
771 | info_msg ("%I\n", input); | |
772 | ||
b9395be3 ILT |
773 | return true; |
774 | } | |
2fa0b342 | 775 | |
b9395be3 ILT |
776 | /* This is called when BFD has discovered a symbol which is defined |
777 | multiple times. */ | |
2fa0b342 | 778 | |
b9395be3 ILT |
779 | /*ARGSUSED*/ |
780 | static boolean | |
781 | multiple_definition (info, name, obfd, osec, oval, nbfd, nsec, nval) | |
782 | struct bfd_link_info *info; | |
783 | const char *name; | |
784 | bfd *obfd; | |
785 | asection *osec; | |
786 | bfd_vma oval; | |
787 | bfd *nbfd; | |
788 | asection *nsec; | |
789 | bfd_vma nval; | |
790 | { | |
6799c638 ILT |
791 | /* If either section has the output_section field set to |
792 | bfd_abs_section_ptr, it means that the section is being | |
793 | discarded, and this is not really a multiple definition at all. | |
794 | FIXME: It would be cleaner to somehow ignore symbols defined in | |
795 | sections which are being discarded. */ | |
796 | if ((osec->output_section != NULL | |
797 | && bfd_is_abs_section (osec->output_section)) | |
798 | || (nsec->output_section != NULL | |
799 | && bfd_is_abs_section (nsec->output_section))) | |
800 | return true; | |
801 | ||
b9395be3 ILT |
802 | einfo ("%X%C: multiple definition of `%T'\n", |
803 | nbfd, nsec, nval, name); | |
804 | if (obfd != (bfd *) NULL) | |
cc23cc69 | 805 | einfo ("%D: first defined here\n", obfd, osec, oval); |
b9395be3 | 806 | return true; |
2fa0b342 DHW |
807 | } |
808 | ||
b9395be3 ILT |
809 | /* This is called when there is a definition of a common symbol, or |
810 | when a common symbol is found for a symbol that is already defined, | |
811 | or when two common symbols are found. We only do something if | |
812 | -warn-common was used. */ | |
813 | ||
814 | /*ARGSUSED*/ | |
815 | static boolean | |
816 | multiple_common (info, name, obfd, otype, osize, nbfd, ntype, nsize) | |
817 | struct bfd_link_info *info; | |
818 | const char *name; | |
819 | bfd *obfd; | |
820 | enum bfd_link_hash_type otype; | |
821 | bfd_vma osize; | |
822 | bfd *nbfd; | |
823 | enum bfd_link_hash_type ntype; | |
824 | bfd_vma nsize; | |
99fe4553 | 825 | { |
b9395be3 ILT |
826 | if (! config.warn_common) |
827 | return true; | |
99fe4553 | 828 | |
8ed88239 ILT |
829 | if (ntype == bfd_link_hash_defined |
830 | || ntype == bfd_link_hash_defweak | |
831 | || ntype == bfd_link_hash_indirect) | |
e47bfa63 | 832 | { |
b9395be3 ILT |
833 | ASSERT (otype == bfd_link_hash_common); |
834 | einfo ("%B: warning: definition of `%T' overriding common\n", | |
835 | nbfd, name); | |
8ed88239 ILT |
836 | if (obfd != NULL) |
837 | einfo ("%B: warning: common is here\n", obfd); | |
e47bfa63 | 838 | } |
8ed88239 ILT |
839 | else if (otype == bfd_link_hash_defined |
840 | || otype == bfd_link_hash_defweak | |
841 | || otype == bfd_link_hash_indirect) | |
2fa0b342 | 842 | { |
b9395be3 ILT |
843 | ASSERT (ntype == bfd_link_hash_common); |
844 | einfo ("%B: warning: common of `%T' overridden by definition\n", | |
845 | nbfd, name); | |
8ed88239 ILT |
846 | if (obfd != NULL) |
847 | einfo ("%B: warning: defined here\n", obfd); | |
b9395be3 ILT |
848 | } |
849 | else | |
850 | { | |
851 | ASSERT (otype == bfd_link_hash_common && ntype == bfd_link_hash_common); | |
852 | if (osize > nsize) | |
2fa0b342 | 853 | { |
b9395be3 ILT |
854 | einfo ("%B: warning: common of `%T' overridden by larger common\n", |
855 | nbfd, name); | |
8ed88239 ILT |
856 | if (obfd != NULL) |
857 | einfo ("%B: warning: larger common is here\n", obfd); | |
2fa0b342 | 858 | } |
b9395be3 | 859 | else if (nsize > osize) |
2fa0b342 | 860 | { |
b9395be3 ILT |
861 | einfo ("%B: warning: common of `%T' overriding smaller common\n", |
862 | nbfd, name); | |
8ed88239 ILT |
863 | if (obfd != NULL) |
864 | einfo ("%B: warning: smaller common is here\n", obfd); | |
2fa0b342 | 865 | } |
e47bfa63 | 866 | else |
2fa0b342 | 867 | { |
b9395be3 | 868 | einfo ("%B: warning: multiple common of `%T'\n", nbfd, name); |
8ed88239 ILT |
869 | if (obfd != NULL) |
870 | einfo ("%B: warning: previous common is here\n", obfd); | |
2fa0b342 DHW |
871 | } |
872 | } | |
873 | ||
b9395be3 | 874 | return true; |
2fa0b342 DHW |
875 | } |
876 | ||
b9395be3 ILT |
877 | /* This is called when BFD has discovered a set element. H is the |
878 | entry in the linker hash table for the set. SECTION and VALUE | |
879 | represent a value which should be added to the set. */ | |
2fa0b342 | 880 | |
b9395be3 ILT |
881 | /*ARGSUSED*/ |
882 | static boolean | |
2a9fa50c | 883 | add_to_set (info, h, reloc, abfd, section, value) |
b9395be3 ILT |
884 | struct bfd_link_info *info; |
885 | struct bfd_link_hash_entry *h; | |
2a9fa50c | 886 | bfd_reloc_code_real_type reloc; |
b9395be3 ILT |
887 | bfd *abfd; |
888 | asection *section; | |
889 | bfd_vma value; | |
2fa0b342 | 890 | { |
7d6439d9 ILT |
891 | if (config.warn_constructors) |
892 | einfo ("%P: warning: global constructor %s used\n", | |
893 | h->root.string); | |
894 | ||
2a9fa50c ILT |
895 | if (! config.build_constructors) |
896 | return true; | |
897 | ||
4b7d2399 | 898 | ldctor_add_set_entry (h, reloc, (const char *) NULL, section, value); |
2a9fa50c ILT |
899 | |
900 | if (h->type == bfd_link_hash_new) | |
901 | { | |
902 | h->type = bfd_link_hash_undefined; | |
903 | h->u.undef.abfd = abfd; | |
904 | /* We don't call bfd_link_add_undef to add this to the list of | |
905 | undefined symbols because we are going to define it | |
906 | ourselves. */ | |
907 | } | |
908 | ||
b9395be3 ILT |
909 | return true; |
910 | } | |
1418c83b | 911 | |
b9395be3 ILT |
912 | /* This is called when BFD has discovered a constructor. This is only |
913 | called for some object file formats--those which do not handle | |
914 | constructors in some more clever fashion. This is similar to | |
915 | adding an element to a set, but less general. */ | |
2fa0b342 | 916 | |
b9395be3 | 917 | static boolean |
2a9fa50c | 918 | constructor_callback (info, constructor, name, abfd, section, value) |
b9395be3 ILT |
919 | struct bfd_link_info *info; |
920 | boolean constructor; | |
b9395be3 ILT |
921 | const char *name; |
922 | bfd *abfd; | |
923 | asection *section; | |
924 | bfd_vma value; | |
925 | { | |
b9395be3 ILT |
926 | char *s; |
927 | struct bfd_link_hash_entry *h; | |
7d6439d9 ILT |
928 | char set_name[1 + sizeof "__CTOR_LIST__"]; |
929 | ||
930 | if (config.warn_constructors) | |
931 | einfo ("%P: warning: global constructor %s used\n", name); | |
b9395be3 ILT |
932 | |
933 | if (! config.build_constructors) | |
934 | return true; | |
935 | ||
2a9fa50c ILT |
936 | /* Ensure that BFD_RELOC_CTOR exists now, so that we can give a |
937 | useful error message. */ | |
4b7d2399 ILT |
938 | if (bfd_reloc_type_lookup (output_bfd, BFD_RELOC_CTOR) == NULL |
939 | && (link_info.relocateable | |
940 | || bfd_reloc_type_lookup (abfd, BFD_RELOC_CTOR) == NULL)) | |
7d6439d9 | 941 | einfo ("%P%F: BFD backend error: BFD_RELOC_CTOR unsupported\n"); |
2a9fa50c | 942 | |
b9395be3 ILT |
943 | s = set_name; |
944 | if (bfd_get_symbol_leading_char (abfd) != '\0') | |
945 | *s++ = bfd_get_symbol_leading_char (abfd); | |
946 | if (constructor) | |
947 | strcpy (s, "__CTOR_LIST__"); | |
29f33467 | 948 | else |
b9395be3 | 949 | strcpy (s, "__DTOR_LIST__"); |
2fa0b342 | 950 | |
b9395be3 ILT |
951 | h = bfd_link_hash_lookup (info->hash, set_name, true, true, true); |
952 | if (h == (struct bfd_link_hash_entry *) NULL) | |
7d6439d9 | 953 | einfo ("%P%F: bfd_link_hash_lookup failed: %E\n"); |
b9395be3 | 954 | if (h->type == bfd_link_hash_new) |
e47bfa63 | 955 | { |
b9395be3 ILT |
956 | h->type = bfd_link_hash_undefined; |
957 | h->u.undef.abfd = abfd; | |
958 | /* We don't call bfd_link_add_undef to add this to the list of | |
959 | undefined symbols because we are going to define it | |
960 | ourselves. */ | |
2fa0b342 | 961 | } |
2fa0b342 | 962 | |
4b7d2399 | 963 | ldctor_add_set_entry (h, BFD_RELOC_CTOR, name, section, value); |
b9395be3 | 964 | return true; |
2fa0b342 DHW |
965 | } |
966 | ||
7d6439d9 ILT |
967 | /* A structure used by warning_callback to pass information through |
968 | bfd_map_over_sections. */ | |
969 | ||
970 | struct warning_callback_info | |
971 | { | |
972 | boolean found; | |
973 | const char *warning; | |
974 | const char *symbol; | |
975 | asymbol **asymbols; | |
976 | }; | |
977 | ||
b9395be3 | 978 | /* This is called when there is a reference to a warning symbol. */ |
2fa0b342 | 979 | |
b9395be3 ILT |
980 | /*ARGSUSED*/ |
981 | static boolean | |
7d6439d9 | 982 | warning_callback (info, warning, symbol, abfd, section, address) |
b9395be3 ILT |
983 | struct bfd_link_info *info; |
984 | const char *warning; | |
7d6439d9 ILT |
985 | const char *symbol; |
986 | bfd *abfd; | |
987 | asection *section; | |
988 | bfd_vma address; | |
2fa0b342 | 989 | { |
4b7d2399 ILT |
990 | /* This is a hack to support warn_multiple_gp. FIXME: This should |
991 | have a cleaner interface, but what? */ | |
992 | if (! config.warn_multiple_gp | |
993 | && strcmp (warning, "using multiple gp values") == 0) | |
994 | return true; | |
995 | ||
7d6439d9 ILT |
996 | if (section != NULL) |
997 | einfo ("%C: %s\n", abfd, section, address, warning); | |
998 | else if (abfd == NULL) | |
999 | einfo ("%P: %s\n", warning); | |
1000 | else if (symbol == NULL) | |
1001 | einfo ("%B: %s\n", abfd, warning); | |
1002 | else | |
1003 | { | |
1004 | lang_input_statement_type *entry; | |
1005 | asymbol **asymbols; | |
1006 | struct warning_callback_info info; | |
1007 | ||
1008 | /* Look through the relocs to see if we can find a plausible | |
1009 | address. */ | |
1010 | ||
1011 | entry = (lang_input_statement_type *) abfd->usrdata; | |
1012 | if (entry != NULL && entry->asymbols != NULL) | |
1013 | asymbols = entry->asymbols; | |
1014 | else | |
1015 | { | |
1016 | long symsize; | |
1017 | long symbol_count; | |
1018 | ||
1019 | symsize = bfd_get_symtab_upper_bound (abfd); | |
1020 | if (symsize < 0) | |
1021 | einfo ("%B%F: could not read symbols: %E\n", abfd); | |
1022 | asymbols = (asymbol **) xmalloc (symsize); | |
1023 | symbol_count = bfd_canonicalize_symtab (abfd, asymbols); | |
1024 | if (symbol_count < 0) | |
1025 | einfo ("%B%F: could not read symbols: %E\n", abfd); | |
1026 | if (entry != NULL) | |
1027 | { | |
1028 | entry->asymbols = asymbols; | |
1029 | entry->symbol_count = symbol_count; | |
1030 | } | |
1031 | } | |
1032 | ||
1033 | info.found = false; | |
1034 | info.warning = warning; | |
1035 | info.symbol = symbol; | |
1036 | info.asymbols = asymbols; | |
1037 | bfd_map_over_sections (abfd, warning_find_reloc, (PTR) &info); | |
1038 | ||
1039 | if (! info.found) | |
1040 | einfo ("%B: %s\n", abfd, warning); | |
582dd77f ILT |
1041 | |
1042 | if (entry == NULL) | |
1043 | free (asymbols); | |
7d6439d9 ILT |
1044 | } |
1045 | ||
b9395be3 | 1046 | return true; |
2fa0b342 DHW |
1047 | } |
1048 | ||
7d6439d9 ILT |
1049 | /* This is called by warning_callback for each section. It checks the |
1050 | relocs of the section to see if it can find a reference to the | |
1051 | symbol which triggered the warning. If it can, it uses the reloc | |
1052 | to give an error message with a file and line number. */ | |
1053 | ||
1054 | static void | |
1055 | warning_find_reloc (abfd, sec, iarg) | |
1056 | bfd *abfd; | |
1057 | asection *sec; | |
1058 | PTR iarg; | |
1059 | { | |
1060 | struct warning_callback_info *info = (struct warning_callback_info *) iarg; | |
1061 | long relsize; | |
1062 | arelent **relpp; | |
1063 | long relcount; | |
1064 | arelent **p, **pend; | |
1065 | ||
1066 | if (info->found) | |
1067 | return; | |
1068 | ||
1069 | relsize = bfd_get_reloc_upper_bound (abfd, sec); | |
1070 | if (relsize < 0) | |
1071 | einfo ("%B%F: could not read relocs: %E\n", abfd); | |
1072 | if (relsize == 0) | |
1073 | return; | |
1074 | ||
1075 | relpp = (arelent **) xmalloc (relsize); | |
1076 | relcount = bfd_canonicalize_reloc (abfd, sec, relpp, info->asymbols); | |
1077 | if (relcount < 0) | |
1078 | einfo ("%B%F: could not read relocs: %E\n", abfd); | |
1079 | ||
1080 | p = relpp; | |
1081 | pend = p + relcount; | |
1082 | for (; p < pend && *p != NULL; p++) | |
1083 | { | |
1084 | arelent *q = *p; | |
1085 | ||
1086 | if (q->sym_ptr_ptr != NULL | |
1087 | && *q->sym_ptr_ptr != NULL | |
1088 | && strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), info->symbol) == 0) | |
1089 | { | |
1090 | /* We found a reloc for the symbol we are looking for. */ | |
1091 | einfo ("%C: %s\n", abfd, sec, q->address, info->warning); | |
1092 | info->found = true; | |
1093 | break; | |
1094 | } | |
1095 | } | |
1096 | ||
1097 | free (relpp); | |
1098 | } | |
1099 | ||
b9395be3 | 1100 | /* This is called when an undefined symbol is found. */ |
2fa0b342 | 1101 | |
b9395be3 ILT |
1102 | /*ARGSUSED*/ |
1103 | static boolean | |
1104 | undefined_symbol (info, name, abfd, section, address) | |
1105 | struct bfd_link_info *info; | |
1106 | const char *name; | |
1107 | bfd *abfd; | |
1108 | asection *section; | |
1109 | bfd_vma address; | |
1110 | { | |
1111 | static char *error_name; | |
1112 | static unsigned int error_count; | |
29f33467 | 1113 | |
b9395be3 | 1114 | #define MAX_ERRORS_IN_A_ROW 5 |
8a045e50 | 1115 | |
809ee7e0 ILT |
1116 | if (config.warn_once) |
1117 | { | |
1118 | static struct bfd_hash_table *hash; | |
1119 | ||
1120 | /* Only warn once about a particular undefined symbol. */ | |
1121 | ||
1122 | if (hash == NULL) | |
1123 | { | |
1124 | hash = ((struct bfd_hash_table *) | |
1125 | xmalloc (sizeof (struct bfd_hash_table))); | |
1126 | if (! bfd_hash_table_init (hash, bfd_hash_newfunc)) | |
1127 | einfo ("%F%P: bfd_hash_table_init failed: %E\n"); | |
1128 | } | |
1129 | ||
1130 | if (bfd_hash_lookup (hash, name, false, false) != NULL) | |
1131 | return true; | |
1132 | ||
1133 | if (bfd_hash_lookup (hash, name, true, true) == NULL) | |
1134 | einfo ("%F%P: bfd_hash_lookup failed: %E\n"); | |
1135 | } | |
1136 | ||
b9395be3 ILT |
1137 | /* We never print more than a reasonable number of errors in a row |
1138 | for a single symbol. */ | |
1139 | if (error_name != (char *) NULL | |
1140 | && strcmp (name, error_name) == 0) | |
1141 | ++error_count; | |
1142 | else | |
e47bfa63 | 1143 | { |
b9395be3 ILT |
1144 | error_count = 0; |
1145 | if (error_name != (char *) NULL) | |
1146 | free (error_name); | |
1147 | error_name = buystring (name); | |
1148 | } | |
2fa0b342 | 1149 | |
23244cd6 ILT |
1150 | if (section != NULL) |
1151 | { | |
1152 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
1153 | einfo ("%X%C: undefined reference to `%T'\n", | |
1154 | abfd, section, address, name); | |
1155 | else if (error_count == MAX_ERRORS_IN_A_ROW) | |
1156 | einfo ("%D: more undefined references to `%T' follow\n", | |
1157 | abfd, section, address, name); | |
1158 | } | |
1159 | else | |
1160 | { | |
1161 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
1162 | einfo ("%X%B: undefined reference to `%T'\n", | |
1163 | abfd, name); | |
1164 | else if (error_count == MAX_ERRORS_IN_A_ROW) | |
1165 | einfo ("%B: more undefined references to `%T' follow\n", | |
1166 | abfd, name); | |
1167 | } | |
2fa0b342 | 1168 | |
b9395be3 | 1169 | return true; |
2fa0b342 DHW |
1170 | } |
1171 | ||
b9395be3 | 1172 | /* This is called when a reloc overflows. */ |
2fa0b342 | 1173 | |
b9395be3 | 1174 | /*ARGSUSED*/ |
9f629407 | 1175 | static boolean |
5dad4c97 | 1176 | reloc_overflow (info, name, reloc_name, addend, abfd, section, address) |
b9395be3 | 1177 | struct bfd_link_info *info; |
5dad4c97 ILT |
1178 | const char *name; |
1179 | const char *reloc_name; | |
1180 | bfd_vma addend; | |
b9395be3 ILT |
1181 | bfd *abfd; |
1182 | asection *section; | |
1183 | bfd_vma address; | |
2fa0b342 | 1184 | { |
2a9fa50c ILT |
1185 | if (abfd == (bfd *) NULL) |
1186 | einfo ("%P%X: generated"); | |
1187 | else | |
1188 | einfo ("%X%C:", abfd, section, address); | |
1189 | einfo (" relocation truncated to fit: %s %T", reloc_name, name); | |
5dad4c97 ILT |
1190 | if (addend != 0) |
1191 | einfo ("+%v", addend); | |
1192 | einfo ("\n"); | |
b9395be3 ILT |
1193 | return true; |
1194 | } | |
2fa0b342 | 1195 | |
b9395be3 | 1196 | /* This is called when a dangerous relocation is made. */ |
3e4c643d | 1197 | |
b9395be3 ILT |
1198 | /*ARGSUSED*/ |
1199 | static boolean | |
1200 | reloc_dangerous (info, message, abfd, section, address) | |
1201 | struct bfd_link_info *info; | |
1202 | const char *message; | |
1203 | bfd *abfd; | |
1204 | asection *section; | |
1205 | bfd_vma address; | |
1206 | { | |
2a9fa50c ILT |
1207 | if (abfd == (bfd *) NULL) |
1208 | einfo ("%P%X: generated"); | |
1209 | else | |
1210 | einfo ("%X%C:", abfd, section, address); | |
1211 | einfo ("dangerous relocation: %s\n", message); | |
b9395be3 ILT |
1212 | return true; |
1213 | } | |
973e421e | 1214 | |
b9395be3 ILT |
1215 | /* This is called when a reloc is being generated attached to a symbol |
1216 | that is not being output. */ | |
2fa0b342 | 1217 | |
b9395be3 ILT |
1218 | /*ARGSUSED*/ |
1219 | static boolean | |
1220 | unattached_reloc (info, name, abfd, section, address) | |
1221 | struct bfd_link_info *info; | |
1222 | const char *name; | |
1223 | bfd *abfd; | |
1224 | asection *section; | |
1225 | bfd_vma address; | |
1226 | { | |
2a9fa50c ILT |
1227 | if (abfd == (bfd *) NULL) |
1228 | einfo ("%P%X: generated"); | |
1229 | else | |
1230 | einfo ("%X%C:", abfd, section, address); | |
1231 | einfo (" reloc refers to symbol `%T' which is not being output\n", name); | |
b9395be3 | 1232 | return true; |
2fa0b342 | 1233 | } |
8a045e50 | 1234 | |
cd09553a ILT |
1235 | /* This is called if link_info.notice_all is set, or when a symbol in |
1236 | link_info.notice_hash is found. Symbols are put in notice_hash | |
1237 | using the -y option. */ | |
b9395be3 | 1238 | |
b9395be3 | 1239 | static boolean |
cd09553a | 1240 | notice (info, name, abfd, section, value) |
b9395be3 ILT |
1241 | struct bfd_link_info *info; |
1242 | const char *name; | |
1243 | bfd *abfd; | |
1244 | asection *section; | |
1245 | bfd_vma value; | |
8a045e50 | 1246 | { |
cd09553a ILT |
1247 | if (! info->notice_all |
1248 | || (info->notice_hash != NULL | |
1249 | && bfd_hash_lookup (info->notice_hash, name, false, false) != NULL)) | |
1250 | einfo ("%B: %s %s\n", abfd, | |
1251 | bfd_is_und_section (section) ? "reference to" : "definition of", | |
1252 | name); | |
1253 | ||
582dd77f | 1254 | if (command_line.cref || nocrossref_list != NULL) |
cd09553a ILT |
1255 | add_cref (name, abfd, section, value); |
1256 | ||
b9395be3 | 1257 | return true; |
8a045e50 | 1258 | } |