Commit | Line | Data |
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8594f568 | 1 | /* Main program of GNU linker. |
7d6439d9 | 2 | Copyright (C) 1991, 92, 93, 94, 1995 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 | |
18 | along with GLD; see the file COPYING. If not, write to | |
943fbd5b | 19 | the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
2fa0b342 | 20 | |
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 | ||
fcf276c4 ILT |
49 | static char *get_emulation PARAMS ((int, char **)); |
50 | static void set_scripts_dir PARAMS ((void)); | |
e47bfa63 | 51 | |
2fa0b342 DHW |
52 | /* EXPORTS */ |
53 | ||
54 | char *default_target; | |
fcf276c4 | 55 | const char *output_filename = "a.out"; |
e47bfa63 | 56 | |
2fa0b342 DHW |
57 | /* Name this program was invoked by. */ |
58 | char *program_name; | |
59 | ||
60 | /* The file that we're creating */ | |
b6316534 | 61 | bfd *output_bfd = 0; |
2fa0b342 | 62 | |
173a0c3d DM |
63 | /* Set by -G argument, for MIPS ECOFF target. */ |
64 | int g_switch_value = 8; | |
65 | ||
2fa0b342 DHW |
66 | /* Nonzero means print names of input files as processed. */ |
67 | boolean trace_files; | |
68 | ||
bbd2521f DM |
69 | /* Nonzero means same, but note open failures, too. */ |
70 | boolean trace_file_tries; | |
71 | ||
7b40f2b1 DM |
72 | /* Nonzero means version number was printed, so exit successfully |
73 | instead of complaining if no input files are given. */ | |
74 | boolean version_printed; | |
75 | ||
f2f55b16 ILT |
76 | /* Nonzero means link in every member of an archive. */ |
77 | boolean whole_archive; | |
78 | ||
2fa0b342 | 79 | args_type command_line; |
173a0c3d | 80 | |
2fa0b342 | 81 | ld_config_type config; |
9f629407 ILT |
82 | |
83 | static boolean check_for_scripts_dir PARAMS ((char *dir)); | |
b9395be3 ILT |
84 | static boolean add_archive_element PARAMS ((struct bfd_link_info *, bfd *, |
85 | const char *)); | |
86 | static boolean multiple_definition PARAMS ((struct bfd_link_info *, | |
87 | const char *, | |
88 | bfd *, asection *, bfd_vma, | |
89 | bfd *, asection *, bfd_vma)); | |
90 | static boolean multiple_common PARAMS ((struct bfd_link_info *, | |
91 | const char *, bfd *, | |
92 | enum bfd_link_hash_type, bfd_vma, | |
93 | bfd *, enum bfd_link_hash_type, | |
94 | bfd_vma)); | |
95 | static boolean add_to_set PARAMS ((struct bfd_link_info *, | |
96 | struct bfd_link_hash_entry *, | |
2a9fa50c | 97 | bfd_reloc_code_real_type, |
b9395be3 ILT |
98 | bfd *, asection *, bfd_vma)); |
99 | static boolean constructor_callback PARAMS ((struct bfd_link_info *, | |
100 | boolean constructor, | |
b9395be3 ILT |
101 | const char *name, |
102 | bfd *, asection *, bfd_vma)); | |
103 | static boolean warning_callback PARAMS ((struct bfd_link_info *, | |
7d6439d9 ILT |
104 | const char *, const char *, bfd *, |
105 | asection *, bfd_vma)); | |
106 | static void warning_find_reloc PARAMS ((bfd *, asection *, PTR)); | |
b9395be3 ILT |
107 | static boolean undefined_symbol PARAMS ((struct bfd_link_info *, |
108 | const char *, bfd *, | |
109 | asection *, bfd_vma)); | |
5dad4c97 ILT |
110 | static boolean reloc_overflow PARAMS ((struct bfd_link_info *, const char *, |
111 | const char *, bfd_vma, | |
112 | bfd *, asection *, bfd_vma)); | |
b9395be3 ILT |
113 | static boolean reloc_dangerous PARAMS ((struct bfd_link_info *, const char *, |
114 | bfd *, asection *, bfd_vma)); | |
115 | static boolean unattached_reloc PARAMS ((struct bfd_link_info *, | |
116 | const char *, bfd *, asection *, | |
117 | bfd_vma)); | |
118 | static boolean notice_ysym PARAMS ((struct bfd_link_info *, const char *, | |
119 | bfd *, asection *, bfd_vma)); | |
120 | ||
121 | static struct bfd_link_callbacks link_callbacks = | |
122 | { | |
123 | add_archive_element, | |
124 | multiple_definition, | |
125 | multiple_common, | |
126 | add_to_set, | |
127 | constructor_callback, | |
128 | warning_callback, | |
129 | undefined_symbol, | |
130 | reloc_overflow, | |
131 | reloc_dangerous, | |
132 | unattached_reloc, | |
133 | notice_ysym | |
134 | }; | |
135 | ||
136 | struct bfd_link_info link_info; | |
173a0c3d | 137 | \f |
0b2f8d2e DM |
138 | static void |
139 | remove_output () | |
140 | { | |
141 | if (output_filename) | |
142 | { | |
143 | if (output_bfd && output_bfd->iostream) | |
144 | fclose((FILE *)(output_bfd->iostream)); | |
145 | if (delete_output_file_on_failure) | |
146 | unlink (output_filename); | |
147 | } | |
148 | } | |
149 | ||
9f629407 | 150 | int |
2fa0b342 | 151 | main (argc, argv) |
2fa0b342 | 152 | int argc; |
9f629407 | 153 | char **argv; |
2fa0b342 DHW |
154 | { |
155 | char *emulation; | |
8594f568 | 156 | long start_time = get_run_time (); |
e47bfa63 | 157 | |
2fa0b342 | 158 | program_name = argv[0]; |
5bcb7f28 | 159 | xmalloc_set_program_name (program_name); |
99fe4553 | 160 | |
a735edad ILT |
161 | START_PROGRESS (program_name, 0); |
162 | ||
e47bfa63 | 163 | bfd_init (); |
bfbdc80f | 164 | |
28113e82 ILT |
165 | bfd_set_error_program_name (program_name); |
166 | ||
5bcb7f28 | 167 | xatexit (remove_output); |
0b2f8d2e | 168 | |
2fa0b342 | 169 | /* Initialize the data about options. */ |
7b40f2b1 | 170 | trace_files = trace_file_tries = version_printed = false; |
f2f55b16 | 171 | whole_archive = false; |
b9395be3 | 172 | config.build_constructors = true; |
2a9fa50c | 173 | config.dynamic_link = false; |
2fa0b342 | 174 | command_line.force_common_definition = false; |
7fb9ca5f | 175 | command_line.interpreter = NULL; |
cc23cc69 | 176 | command_line.rpath = NULL; |
2fa0b342 | 177 | |
b9395be3 ILT |
178 | link_info.callbacks = &link_callbacks; |
179 | link_info.relocateable = false; | |
64887de2 | 180 | link_info.shared = false; |
4551e108 | 181 | link_info.symbolic = false; |
7d6439d9 | 182 | link_info.static_link = false; |
6799c638 | 183 | link_info.traditional_format = false; |
b9395be3 ILT |
184 | link_info.strip = strip_none; |
185 | link_info.discard = discard_none; | |
186 | link_info.lprefix_len = 1; | |
187 | link_info.lprefix = "L"; | |
188 | link_info.keep_memory = true; | |
189 | link_info.input_bfds = NULL; | |
190 | link_info.create_object_symbols_section = NULL; | |
191 | link_info.hash = NULL; | |
192 | link_info.keep_hash = NULL; | |
193 | link_info.notice_hash = NULL; | |
e3d73386 | 194 | link_info.wrap_hash = NULL; |
7d6439d9 | 195 | |
e47bfa63 | 196 | ldfile_add_arch (""); |
a72f4e5f | 197 | |
2fa0b342 DHW |
198 | config.make_executable = true; |
199 | force_make_executable = false; | |
ce4d59e2 SC |
200 | config.magic_demand_paged = true; |
201 | config.text_read_only = true; | |
2fa0b342 | 202 | config.make_executable = true; |
1418c83b | 203 | |
d723cd17 | 204 | emulation = get_emulation (argc, argv); |
e47bfa63 SC |
205 | ldemul_choose_mode (emulation); |
206 | default_target = ldemul_choose_target (); | |
207 | lang_init (); | |
208 | ldemul_before_parse (); | |
2fa0b342 | 209 | lang_has_input_file = false; |
e47bfa63 | 210 | parse_args (argc, argv); |
f3739bc3 | 211 | |
7d6439d9 ILT |
212 | ldemul_set_symbols (); |
213 | ||
2a9fa50c ILT |
214 | if (link_info.relocateable) |
215 | { | |
216 | if (command_line.relax) | |
217 | einfo ("%P%F: -relax and -r may not be used together\n"); | |
64887de2 ILT |
218 | if (link_info.shared) |
219 | einfo ("%P%F: -r and -shared may not be used together\n"); | |
2a9fa50c ILT |
220 | } |
221 | ||
8ed88239 ILT |
222 | /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I |
223 | don't see how else this can be handled, since in this case we | |
224 | must preserve all externally visible symbols. */ | |
225 | if (link_info.relocateable && link_info.strip == strip_all) | |
226 | { | |
227 | link_info.strip = strip_debugger; | |
228 | if (link_info.discard == discard_none) | |
229 | link_info.discard = discard_all; | |
230 | } | |
231 | ||
973e421e ILT |
232 | /* This essentially adds another -L directory so this must be done after |
233 | the -L's in argv have been processed. */ | |
234 | set_scripts_dir (); | |
235 | ||
bbd2521f DM |
236 | if (had_script == false) |
237 | { | |
238 | /* Read the emulation's appropriate default script. */ | |
2a28d8b0 DM |
239 | int isfile; |
240 | char *s = ldemul_get_script (&isfile); | |
241 | ||
242 | if (isfile) | |
d4e5e3c3 | 243 | ldfile_open_command_file (s); |
2a28d8b0 | 244 | else |
22c41f00 ILT |
245 | { |
246 | if (trace_file_tries) | |
247 | { | |
248 | info_msg ("using internal linker script:\n"); | |
249 | info_msg ("==================================================\n"); | |
250 | info_msg (s); | |
251 | info_msg ("\n==================================================\n"); | |
252 | } | |
7d6439d9 | 253 | lex_string = s; |
22c41f00 ILT |
254 | lex_redirect (s); |
255 | } | |
d4e5e3c3 DM |
256 | parser_input = input_script; |
257 | yyparse (); | |
7d6439d9 | 258 | lex_string = NULL; |
bbd2521f DM |
259 | } |
260 | ||
e47bfa63 | 261 | lang_final (); |
9d1fe8a4 | 262 | |
e47bfa63 SC |
263 | if (lang_has_input_file == false) |
264 | { | |
7b40f2b1 | 265 | if (version_printed) |
0b2f8d2e | 266 | xexit (0); |
973e421e | 267 | einfo ("%P%F: no input files\n"); |
870f54b2 | 268 | } |
2fa0b342 | 269 | |
bbd2521f DM |
270 | if (trace_files) |
271 | { | |
973e421e | 272 | info_msg ("%P: mode %s\n", emulation); |
bbd2521f DM |
273 | } |
274 | ||
e47bfa63 | 275 | ldemul_after_parse (); |
870f54b2 | 276 | |
9d1fe8a4 | 277 | |
e47bfa63 | 278 | if (config.map_filename) |
870f54b2 | 279 | { |
e47bfa63 | 280 | if (strcmp (config.map_filename, "-") == 0) |
2e2bf962 | 281 | { |
e47bfa63 | 282 | config.map_file = stdout; |
2e2bf962 | 283 | } |
e47bfa63 SC |
284 | else |
285 | { | |
286 | config.map_file = fopen (config.map_filename, FOPEN_WT); | |
287 | if (config.map_file == (FILE *) NULL) | |
288 | { | |
de71eb77 | 289 | bfd_set_error (bfd_error_system_call); |
bbd2521f | 290 | einfo ("%P%F: cannot open map file %s: %E\n", |
e47bfa63 SC |
291 | config.map_filename); |
292 | } | |
293 | } | |
294 | } | |
870f54b2 | 295 | |
2e2bf962 | 296 | |
e47bfa63 | 297 | lang_process (); |
2fa0b342 | 298 | |
2fa0b342 DHW |
299 | /* Print error messages for any missing symbols, for any warning |
300 | symbols, and possibly multiple definitions */ | |
301 | ||
2fa0b342 | 302 | |
e47bfa63 SC |
303 | if (config.text_read_only) |
304 | { | |
305 | /* Look for a text section and mark the readonly attribute in it */ | |
306 | asection *found = bfd_get_section_by_name (output_bfd, ".text"); | |
307 | ||
308 | if (found != (asection *) NULL) | |
309 | { | |
310 | found->flags |= SEC_READONLY; | |
311 | } | |
3e4c643d | 312 | } |
2fa0b342 | 313 | |
a735edad | 314 | if (link_info.relocateable) |
f3739bc3 | 315 | output_bfd->flags &= ~EXEC_P; |
a72f4e5f | 316 | else |
f3739bc3 | 317 | output_bfd->flags |= EXEC_P; |
b257477f | 318 | |
f3739bc3 | 319 | ldwrite (); |
b257477f | 320 | |
0cacbcbe ILT |
321 | if (config.map_file != NULL) |
322 | lang_map (); | |
323 | ||
f3739bc3 SC |
324 | /* Even if we're producing relocateable output, some non-fatal errors should |
325 | be reported in the exit status. (What non-fatal errors, if any, do we | |
326 | want to ignore for relocateable output?) */ | |
a72f4e5f | 327 | |
f3739bc3 SC |
328 | if (config.make_executable == false && force_make_executable == false) |
329 | { | |
330 | if (trace_files == true) | |
e47bfa63 | 331 | { |
973e421e | 332 | einfo ("%P: link errors found, deleting executable `%s'\n", |
f3739bc3 | 333 | output_filename); |
e47bfa63 | 334 | } |
a72f4e5f | 335 | |
f3739bc3 SC |
336 | if (output_bfd->iostream) |
337 | fclose ((FILE *) (output_bfd->iostream)); | |
a72f4e5f | 338 | |
f3739bc3 | 339 | unlink (output_filename); |
0b2f8d2e | 340 | xexit (1); |
f3739bc3 SC |
341 | } |
342 | else | |
343 | { | |
2a9fa50c ILT |
344 | if (! bfd_close (output_bfd)) |
345 | einfo ("%F%B: final close failed: %E\n", output_bfd); | |
f3739bc3 | 346 | } |
2fa0b342 | 347 | |
a735edad ILT |
348 | END_PROGRESS (program_name); |
349 | ||
b9395be3 ILT |
350 | if (config.stats) |
351 | { | |
352 | extern char **environ; | |
eac6290c | 353 | #ifdef HAVE_SBRK |
b9395be3 | 354 | char *lim = (char *) sbrk (0); |
de71eb77 | 355 | #endif |
8594f568 | 356 | long run_time = get_run_time () - start_time; |
b9395be3 | 357 | |
5bcb7f28 | 358 | fprintf (stderr, "%s: total time in link: %ld.%06ld\n", |
8594f568 | 359 | program_name, run_time / 1000000, run_time % 1000000); |
eac6290c | 360 | #ifdef HAVE_SBRK |
b9395be3 ILT |
361 | fprintf (stderr, "%s: data size %ld\n", program_name, |
362 | (long) (lim - (char *) &environ)); | |
de71eb77 | 363 | #endif |
b9395be3 ILT |
364 | } |
365 | ||
52a8ebfe DM |
366 | /* Prevent remove_output from doing anything, after a successful link. */ |
367 | output_filename = NULL; | |
368 | ||
0b2f8d2e | 369 | xexit (0); |
9f629407 | 370 | return 0; |
d723cd17 DM |
371 | } |
372 | ||
373 | /* We need to find any explicitly given emulation in order to initialize the | |
374 | state that's needed by the lex&yacc argument parser (parse_args). */ | |
375 | ||
376 | static char * | |
377 | get_emulation (argc, argv) | |
378 | int argc; | |
379 | char **argv; | |
380 | { | |
381 | char *emulation; | |
382 | int i; | |
383 | ||
d723cd17 DM |
384 | emulation = (char *) getenv (EMULATION_ENVIRON); |
385 | if (emulation == NULL) | |
386 | emulation = DEFAULT_EMULATION; | |
d723cd17 DM |
387 | |
388 | for (i = 1; i < argc; i++) | |
389 | { | |
390 | if (!strncmp (argv[i], "-m", 2)) | |
391 | { | |
392 | if (argv[i][2] == '\0') | |
393 | { | |
394 | /* -m EMUL */ | |
395 | if (i < argc - 1) | |
396 | { | |
397 | emulation = argv[i + 1]; | |
398 | i++; | |
399 | } | |
400 | else | |
401 | { | |
973e421e | 402 | einfo("%P%F: missing argument to -m\n"); |
d723cd17 DM |
403 | } |
404 | } | |
973e421e ILT |
405 | else if (strcmp (argv[i], "-mips1") == 0 |
406 | || strcmp (argv[i], "-mips2") == 0 | |
407 | || strcmp (argv[i], "-mips3") == 0) | |
408 | { | |
409 | /* FIXME: The arguments -mips1, -mips2 and -mips3 are | |
410 | passed to the linker by some MIPS compilers. They | |
411 | generally tell the linker to use a slightly different | |
412 | library path. Perhaps someday these should be | |
413 | implemented as emulations; until then, we just ignore | |
414 | the arguments and hope that nobody ever creates | |
415 | emulations named ips1, ips2 or ips3. */ | |
416 | } | |
cbbf9608 ILT |
417 | else if (strcmp (argv[i], "-m486") == 0) |
418 | { | |
419 | /* FIXME: The argument -m486 is passed to the linker on | |
420 | some Linux systems. Hope that nobody creates an | |
421 | emulation named 486. */ | |
422 | } | |
d723cd17 DM |
423 | else |
424 | { | |
425 | /* -mEMUL */ | |
426 | emulation = &argv[i][2]; | |
427 | } | |
428 | } | |
429 | } | |
430 | ||
431 | return emulation; | |
432 | } | |
433 | ||
434 | /* If directory DIR contains an "ldscripts" subdirectory, | |
435 | add DIR to the library search path and return true, | |
436 | else return false. */ | |
437 | ||
438 | static boolean | |
439 | check_for_scripts_dir (dir) | |
440 | char *dir; | |
441 | { | |
442 | size_t dirlen; | |
443 | char *buf; | |
444 | struct stat s; | |
445 | boolean res; | |
446 | ||
447 | dirlen = strlen (dir); | |
448 | /* sizeof counts the terminating NUL. */ | |
0b2f8d2e | 449 | buf = (char *) xmalloc (dirlen + sizeof("/ldscripts")); |
d723cd17 DM |
450 | sprintf (buf, "%s/ldscripts", dir); |
451 | ||
452 | res = stat (buf, &s) == 0 && S_ISDIR (s.st_mode); | |
f4208462 | 453 | free (buf); |
d723cd17 | 454 | if (res) |
0cd82d00 | 455 | ldfile_add_library_path (dir, false); |
d723cd17 DM |
456 | return res; |
457 | } | |
458 | ||
459 | /* Set the default directory for finding script files. | |
f4208462 DM |
460 | Libraries will be searched for here too, but that's ok. |
461 | We look for the "ldscripts" directory in: | |
462 | ||
f4208462 | 463 | SCRIPTDIR (passed from Makefile) |
bbd2521f DM |
464 | the dir where this program is (for using it from the build tree) |
465 | the dir where this program is/../lib (for installing the tool suite elsewhere) */ | |
d723cd17 DM |
466 | |
467 | static void | |
468 | set_scripts_dir () | |
469 | { | |
f4208462 DM |
470 | char *end, *dir; |
471 | size_t dirlen; | |
472 | ||
d723cd17 | 473 | if (check_for_scripts_dir (SCRIPTDIR)) |
f4208462 | 474 | return; /* We've been installed normally. */ |
d723cd17 DM |
475 | |
476 | /* Look for "ldscripts" in the dir where our binary is. */ | |
477 | end = strrchr (program_name, '/'); | |
7d6439d9 ILT |
478 | |
479 | if (end == NULL) | |
bbd2521f | 480 | { |
7d6439d9 ILT |
481 | /* Don't look for ldscripts in the current directory. There is |
482 | too much potential for confusion. */ | |
483 | return; | |
bbd2521f | 484 | } |
f4208462 | 485 | |
7d6439d9 ILT |
486 | dirlen = end - program_name; |
487 | /* Make a copy of program_name in dir. | |
488 | Leave room for later "/../lib". */ | |
489 | dir = (char *) xmalloc (dirlen + 8); | |
490 | strncpy (dir, program_name, dirlen); | |
491 | dir[dirlen] = '\0'; | |
492 | ||
f4208462 DM |
493 | if (check_for_scripts_dir (dir)) |
494 | return; /* Don't free dir. */ | |
495 | ||
496 | /* Look for "ldscripts" in <the dir where our binary is>/../lib. */ | |
497 | strcpy (dir + dirlen, "/../lib"); | |
498 | if (check_for_scripts_dir (dir)) | |
499 | return; | |
500 | ||
501 | free (dir); /* Well, we tried. */ | |
d723cd17 | 502 | } |
2fa0b342 | 503 | |
e47bfa63 | 504 | void |
b9395be3 ILT |
505 | add_ysym (name) |
506 | const char *name; | |
2fa0b342 | 507 | { |
b9395be3 ILT |
508 | if (link_info.notice_hash == (struct bfd_hash_table *) NULL) |
509 | { | |
510 | link_info.notice_hash = ((struct bfd_hash_table *) | |
0b2f8d2e | 511 | xmalloc (sizeof (struct bfd_hash_table))); |
b9395be3 ILT |
512 | if (! bfd_hash_table_init_n (link_info.notice_hash, |
513 | bfd_hash_newfunc, | |
514 | 61)) | |
515 | einfo ("%P%F: bfd_hash_table_init failed: %E\n"); | |
516 | } | |
517 | ||
518 | if (bfd_hash_lookup (link_info.notice_hash, name, true, true) | |
519 | == (struct bfd_hash_entry *) NULL) | |
520 | einfo ("%P%F: bfd_hash_lookup failed: %E\n"); | |
2fa0b342 | 521 | } |
e47bfa63 | 522 | |
28113e82 ILT |
523 | /* Record a symbol to be wrapped, from the --wrap option. */ |
524 | ||
525 | void | |
526 | add_wrap (name) | |
527 | const char *name; | |
528 | { | |
529 | if (link_info.wrap_hash == NULL) | |
530 | { | |
531 | link_info.wrap_hash = ((struct bfd_hash_table *) | |
532 | xmalloc (sizeof (struct bfd_hash_table))); | |
533 | if (! bfd_hash_table_init_n (link_info.wrap_hash, | |
534 | bfd_hash_newfunc, | |
535 | 61)) | |
536 | einfo ("%P%F: bfd_hash_table_init failed: %E\n"); | |
537 | } | |
538 | if (bfd_hash_lookup (link_info.wrap_hash, name, true, true) == NULL) | |
539 | einfo ("%P%F: bfd_hash_lookup failed: %E\n"); | |
540 | } | |
541 | ||
b9395be3 | 542 | /* Handle the -retain-symbols-file option. */ |
2fa0b342 | 543 | |
2fa0b342 | 544 | void |
b9395be3 ILT |
545 | add_keepsyms_file (filename) |
546 | const char *filename; | |
2fa0b342 | 547 | { |
b9395be3 ILT |
548 | FILE *file; |
549 | char *buf; | |
550 | size_t bufsize; | |
551 | int c; | |
2fa0b342 | 552 | |
b9395be3 ILT |
553 | if (link_info.strip == strip_some) |
554 | einfo ("%X%P: error: duplicate retain-symbols-file\n"); | |
3e4c643d | 555 | |
b9395be3 ILT |
556 | file = fopen (filename, "r"); |
557 | if (file == (FILE *) NULL) | |
e47bfa63 | 558 | { |
5bcb7f28 | 559 | bfd_set_error (bfd_error_system_call); |
7d6439d9 | 560 | einfo ("%X%P: %s: %E\n", filename); |
b9395be3 | 561 | return; |
be1627d3 | 562 | } |
be1627d3 | 563 | |
b9395be3 | 564 | link_info.keep_hash = ((struct bfd_hash_table *) |
0b2f8d2e | 565 | xmalloc (sizeof (struct bfd_hash_table))); |
b9395be3 ILT |
566 | if (! bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc)) |
567 | einfo ("%P%F: bfd_hash_table_init failed: %E\n"); | |
2fa0b342 | 568 | |
b9395be3 | 569 | bufsize = 100; |
0b2f8d2e | 570 | buf = (char *) xmalloc (bufsize); |
c611e285 | 571 | |
b9395be3 ILT |
572 | c = getc (file); |
573 | while (c != EOF) | |
29f33467 | 574 | { |
b9395be3 ILT |
575 | while (isspace (c)) |
576 | c = getc (file); | |
e47bfa63 | 577 | |
b9395be3 | 578 | if (c != EOF) |
29f33467 | 579 | { |
b9395be3 | 580 | size_t len = 0; |
8a045e50 | 581 | |
b9395be3 | 582 | while (! isspace (c) && c != EOF) |
29f33467 | 583 | { |
b9395be3 ILT |
584 | buf[len] = c; |
585 | ++len; | |
586 | if (len >= bufsize) | |
29f33467 | 587 | { |
b9395be3 | 588 | bufsize *= 2; |
0b2f8d2e | 589 | buf = xrealloc (buf, bufsize); |
29f33467 | 590 | } |
b9395be3 | 591 | c = getc (file); |
29f33467 | 592 | } |
81016051 | 593 | |
b9395be3 ILT |
594 | buf[len] = '\0'; |
595 | ||
596 | if (bfd_hash_lookup (link_info.keep_hash, buf, true, true) | |
597 | == (struct bfd_hash_entry *) NULL) | |
7d6439d9 | 598 | einfo ("%P%F: bfd_hash_lookup for insertion failed: %E\n"); |
29f33467 | 599 | } |
e47bfa63 | 600 | } |
2fa0b342 | 601 | |
b9395be3 ILT |
602 | if (link_info.strip != strip_none) |
603 | einfo ("%P: `-retain-symbols-file' overrides `-s' and `-S'\n"); | |
8a045e50 | 604 | |
b9395be3 ILT |
605 | link_info.strip = strip_some; |
606 | } | |
607 | \f | |
608 | /* Callbacks from the BFD linker routines. */ | |
2fa0b342 | 609 | |
b9395be3 ILT |
610 | /* This is called when BFD has decided to include an archive member in |
611 | a link. */ | |
2fa0b342 | 612 | |
b9395be3 ILT |
613 | /*ARGSUSED*/ |
614 | static boolean | |
615 | add_archive_element (info, abfd, name) | |
616 | struct bfd_link_info *info; | |
617 | bfd *abfd; | |
618 | const char *name; | |
2fa0b342 | 619 | { |
b9395be3 ILT |
620 | lang_input_statement_type *input; |
621 | ||
622 | input = ((lang_input_statement_type *) | |
7d6439d9 | 623 | xmalloc (sizeof (lang_input_statement_type))); |
b9395be3 ILT |
624 | input->filename = abfd->filename; |
625 | input->local_sym_name = abfd->filename; | |
626 | input->the_bfd = abfd; | |
627 | input->asymbols = NULL; | |
b9395be3 ILT |
628 | input->next = NULL; |
629 | input->just_syms_flag = false; | |
630 | input->loaded = false; | |
210c52ac | 631 | input->search_dirs_flag = false; |
b9395be3 ILT |
632 | |
633 | /* FIXME: The following fields are not set: header.next, | |
210c52ac ILT |
634 | header.type, closed, passive_position, symbol_count, |
635 | next_real_file, is_archive, target, real, common_section, | |
636 | common_output_section, complained. This bit of code is from the | |
637 | old decode_library_subfile function. I don't know whether any of | |
638 | those fields matters. */ | |
b9395be3 ILT |
639 | |
640 | ldlang_add_file (input); | |
641 | ||
2a9fa50c | 642 | if (config.map_file != (FILE *) NULL) |
efa6c497 ILT |
643 | { |
644 | static boolean header_printed; | |
645 | struct bfd_link_hash_entry *h; | |
646 | bfd *from; | |
647 | int len; | |
648 | ||
649 | h = bfd_link_hash_lookup (link_info.hash, name, false, false, true); | |
650 | ||
651 | if (h == NULL) | |
652 | from = NULL; | |
653 | else | |
654 | { | |
655 | switch (h->type) | |
656 | { | |
657 | default: | |
658 | from = NULL; | |
659 | break; | |
660 | ||
661 | case bfd_link_hash_defined: | |
662 | case bfd_link_hash_defweak: | |
663 | from = h->u.def.section->owner; | |
664 | break; | |
665 | ||
666 | case bfd_link_hash_undefined: | |
667 | case bfd_link_hash_undefweak: | |
668 | from = h->u.undef.abfd; | |
669 | break; | |
670 | ||
671 | case bfd_link_hash_common: | |
672 | from = h->u.c.p->section->owner; | |
673 | break; | |
674 | } | |
675 | } | |
676 | ||
677 | if (! header_printed) | |
678 | { | |
679 | char buf[100]; | |
680 | ||
681 | sprintf (buf, "%-29s %s\n\n", "Archive member included", | |
682 | "because of file (symbol)"); | |
683 | minfo ("%s", buf); | |
684 | header_printed = true; | |
685 | } | |
686 | ||
687 | if (bfd_my_archive (abfd) == NULL) | |
688 | { | |
689 | minfo ("%s", bfd_get_filename (abfd)); | |
690 | len = strlen (bfd_get_filename (abfd)); | |
691 | } | |
692 | else | |
693 | { | |
694 | minfo ("%s(%s)", bfd_get_filename (bfd_my_archive (abfd)), | |
695 | bfd_get_filename (abfd)); | |
696 | len = (strlen (bfd_get_filename (bfd_my_archive (abfd))) | |
697 | + strlen (bfd_get_filename (abfd)) | |
698 | + 2); | |
699 | } | |
700 | ||
701 | if (len >= 29) | |
702 | { | |
703 | print_nl (); | |
704 | len = 0; | |
705 | } | |
706 | while (len < 30) | |
707 | { | |
708 | print_space (); | |
709 | ++len; | |
710 | } | |
711 | ||
712 | if (from != NULL) | |
713 | minfo ("%B ", from); | |
714 | if (h != NULL) | |
715 | minfo ("(%T)\n", h->root.string); | |
716 | else | |
717 | minfo ("(%s)\n", name); | |
718 | } | |
b9395be3 | 719 | |
5dad4c97 ILT |
720 | if (trace_files || trace_file_tries) |
721 | info_msg ("%I\n", input); | |
722 | ||
b9395be3 ILT |
723 | return true; |
724 | } | |
2fa0b342 | 725 | |
b9395be3 ILT |
726 | /* This is called when BFD has discovered a symbol which is defined |
727 | multiple times. */ | |
2fa0b342 | 728 | |
b9395be3 ILT |
729 | /*ARGSUSED*/ |
730 | static boolean | |
731 | multiple_definition (info, name, obfd, osec, oval, nbfd, nsec, nval) | |
732 | struct bfd_link_info *info; | |
733 | const char *name; | |
734 | bfd *obfd; | |
735 | asection *osec; | |
736 | bfd_vma oval; | |
737 | bfd *nbfd; | |
738 | asection *nsec; | |
739 | bfd_vma nval; | |
740 | { | |
6799c638 ILT |
741 | /* If either section has the output_section field set to |
742 | bfd_abs_section_ptr, it means that the section is being | |
743 | discarded, and this is not really a multiple definition at all. | |
744 | FIXME: It would be cleaner to somehow ignore symbols defined in | |
745 | sections which are being discarded. */ | |
746 | if ((osec->output_section != NULL | |
747 | && bfd_is_abs_section (osec->output_section)) | |
748 | || (nsec->output_section != NULL | |
749 | && bfd_is_abs_section (nsec->output_section))) | |
750 | return true; | |
751 | ||
b9395be3 ILT |
752 | einfo ("%X%C: multiple definition of `%T'\n", |
753 | nbfd, nsec, nval, name); | |
754 | if (obfd != (bfd *) NULL) | |
cc23cc69 | 755 | einfo ("%D: first defined here\n", obfd, osec, oval); |
b9395be3 | 756 | return true; |
2fa0b342 DHW |
757 | } |
758 | ||
b9395be3 ILT |
759 | /* This is called when there is a definition of a common symbol, or |
760 | when a common symbol is found for a symbol that is already defined, | |
761 | or when two common symbols are found. We only do something if | |
762 | -warn-common was used. */ | |
763 | ||
764 | /*ARGSUSED*/ | |
765 | static boolean | |
766 | multiple_common (info, name, obfd, otype, osize, nbfd, ntype, nsize) | |
767 | struct bfd_link_info *info; | |
768 | const char *name; | |
769 | bfd *obfd; | |
770 | enum bfd_link_hash_type otype; | |
771 | bfd_vma osize; | |
772 | bfd *nbfd; | |
773 | enum bfd_link_hash_type ntype; | |
774 | bfd_vma nsize; | |
99fe4553 | 775 | { |
b9395be3 ILT |
776 | if (! config.warn_common) |
777 | return true; | |
99fe4553 | 778 | |
8ed88239 ILT |
779 | if (ntype == bfd_link_hash_defined |
780 | || ntype == bfd_link_hash_defweak | |
781 | || ntype == bfd_link_hash_indirect) | |
e47bfa63 | 782 | { |
b9395be3 ILT |
783 | ASSERT (otype == bfd_link_hash_common); |
784 | einfo ("%B: warning: definition of `%T' overriding common\n", | |
785 | nbfd, name); | |
8ed88239 ILT |
786 | if (obfd != NULL) |
787 | einfo ("%B: warning: common is here\n", obfd); | |
e47bfa63 | 788 | } |
8ed88239 ILT |
789 | else if (otype == bfd_link_hash_defined |
790 | || otype == bfd_link_hash_defweak | |
791 | || otype == bfd_link_hash_indirect) | |
2fa0b342 | 792 | { |
b9395be3 ILT |
793 | ASSERT (ntype == bfd_link_hash_common); |
794 | einfo ("%B: warning: common of `%T' overridden by definition\n", | |
795 | nbfd, name); | |
8ed88239 ILT |
796 | if (obfd != NULL) |
797 | einfo ("%B: warning: defined here\n", obfd); | |
b9395be3 ILT |
798 | } |
799 | else | |
800 | { | |
801 | ASSERT (otype == bfd_link_hash_common && ntype == bfd_link_hash_common); | |
802 | if (osize > nsize) | |
2fa0b342 | 803 | { |
b9395be3 ILT |
804 | einfo ("%B: warning: common of `%T' overridden by larger common\n", |
805 | nbfd, name); | |
8ed88239 ILT |
806 | if (obfd != NULL) |
807 | einfo ("%B: warning: larger common is here\n", obfd); | |
2fa0b342 | 808 | } |
b9395be3 | 809 | else if (nsize > osize) |
2fa0b342 | 810 | { |
b9395be3 ILT |
811 | einfo ("%B: warning: common of `%T' overriding smaller common\n", |
812 | nbfd, name); | |
8ed88239 ILT |
813 | if (obfd != NULL) |
814 | einfo ("%B: warning: smaller common is here\n", obfd); | |
2fa0b342 | 815 | } |
e47bfa63 | 816 | else |
2fa0b342 | 817 | { |
b9395be3 | 818 | einfo ("%B: warning: multiple common of `%T'\n", nbfd, name); |
8ed88239 ILT |
819 | if (obfd != NULL) |
820 | einfo ("%B: warning: previous common is here\n", obfd); | |
2fa0b342 DHW |
821 | } |
822 | } | |
823 | ||
b9395be3 | 824 | return true; |
2fa0b342 DHW |
825 | } |
826 | ||
b9395be3 ILT |
827 | /* This is called when BFD has discovered a set element. H is the |
828 | entry in the linker hash table for the set. SECTION and VALUE | |
829 | represent a value which should be added to the set. */ | |
2fa0b342 | 830 | |
b9395be3 ILT |
831 | /*ARGSUSED*/ |
832 | static boolean | |
2a9fa50c | 833 | add_to_set (info, h, reloc, abfd, section, value) |
b9395be3 ILT |
834 | struct bfd_link_info *info; |
835 | struct bfd_link_hash_entry *h; | |
2a9fa50c | 836 | bfd_reloc_code_real_type reloc; |
b9395be3 ILT |
837 | bfd *abfd; |
838 | asection *section; | |
839 | bfd_vma value; | |
2fa0b342 | 840 | { |
7d6439d9 ILT |
841 | if (config.warn_constructors) |
842 | einfo ("%P: warning: global constructor %s used\n", | |
843 | h->root.string); | |
844 | ||
2a9fa50c ILT |
845 | if (! config.build_constructors) |
846 | return true; | |
847 | ||
4b7d2399 | 848 | ldctor_add_set_entry (h, reloc, (const char *) NULL, section, value); |
2a9fa50c ILT |
849 | |
850 | if (h->type == bfd_link_hash_new) | |
851 | { | |
852 | h->type = bfd_link_hash_undefined; | |
853 | h->u.undef.abfd = abfd; | |
854 | /* We don't call bfd_link_add_undef to add this to the list of | |
855 | undefined symbols because we are going to define it | |
856 | ourselves. */ | |
857 | } | |
858 | ||
b9395be3 ILT |
859 | return true; |
860 | } | |
1418c83b | 861 | |
b9395be3 ILT |
862 | /* This is called when BFD has discovered a constructor. This is only |
863 | called for some object file formats--those which do not handle | |
864 | constructors in some more clever fashion. This is similar to | |
865 | adding an element to a set, but less general. */ | |
2fa0b342 | 866 | |
b9395be3 | 867 | static boolean |
2a9fa50c | 868 | constructor_callback (info, constructor, name, abfd, section, value) |
b9395be3 ILT |
869 | struct bfd_link_info *info; |
870 | boolean constructor; | |
b9395be3 ILT |
871 | const char *name; |
872 | bfd *abfd; | |
873 | asection *section; | |
874 | bfd_vma value; | |
875 | { | |
b9395be3 ILT |
876 | char *s; |
877 | struct bfd_link_hash_entry *h; | |
7d6439d9 ILT |
878 | char set_name[1 + sizeof "__CTOR_LIST__"]; |
879 | ||
880 | if (config.warn_constructors) | |
881 | einfo ("%P: warning: global constructor %s used\n", name); | |
b9395be3 ILT |
882 | |
883 | if (! config.build_constructors) | |
884 | return true; | |
885 | ||
2a9fa50c ILT |
886 | /* Ensure that BFD_RELOC_CTOR exists now, so that we can give a |
887 | useful error message. */ | |
4b7d2399 ILT |
888 | if (bfd_reloc_type_lookup (output_bfd, BFD_RELOC_CTOR) == NULL |
889 | && (link_info.relocateable | |
890 | || bfd_reloc_type_lookup (abfd, BFD_RELOC_CTOR) == NULL)) | |
7d6439d9 | 891 | einfo ("%P%F: BFD backend error: BFD_RELOC_CTOR unsupported\n"); |
2a9fa50c | 892 | |
b9395be3 ILT |
893 | s = set_name; |
894 | if (bfd_get_symbol_leading_char (abfd) != '\0') | |
895 | *s++ = bfd_get_symbol_leading_char (abfd); | |
896 | if (constructor) | |
897 | strcpy (s, "__CTOR_LIST__"); | |
29f33467 | 898 | else |
b9395be3 | 899 | strcpy (s, "__DTOR_LIST__"); |
2fa0b342 | 900 | |
b9395be3 ILT |
901 | h = bfd_link_hash_lookup (info->hash, set_name, true, true, true); |
902 | if (h == (struct bfd_link_hash_entry *) NULL) | |
7d6439d9 | 903 | einfo ("%P%F: bfd_link_hash_lookup failed: %E\n"); |
b9395be3 | 904 | if (h->type == bfd_link_hash_new) |
e47bfa63 | 905 | { |
b9395be3 ILT |
906 | h->type = bfd_link_hash_undefined; |
907 | h->u.undef.abfd = abfd; | |
908 | /* We don't call bfd_link_add_undef to add this to the list of | |
909 | undefined symbols because we are going to define it | |
910 | ourselves. */ | |
2fa0b342 | 911 | } |
2fa0b342 | 912 | |
4b7d2399 | 913 | ldctor_add_set_entry (h, BFD_RELOC_CTOR, name, section, value); |
b9395be3 | 914 | return true; |
2fa0b342 DHW |
915 | } |
916 | ||
7d6439d9 ILT |
917 | /* A structure used by warning_callback to pass information through |
918 | bfd_map_over_sections. */ | |
919 | ||
920 | struct warning_callback_info | |
921 | { | |
922 | boolean found; | |
923 | const char *warning; | |
924 | const char *symbol; | |
925 | asymbol **asymbols; | |
926 | }; | |
927 | ||
b9395be3 | 928 | /* This is called when there is a reference to a warning symbol. */ |
2fa0b342 | 929 | |
b9395be3 ILT |
930 | /*ARGSUSED*/ |
931 | static boolean | |
7d6439d9 | 932 | warning_callback (info, warning, symbol, abfd, section, address) |
b9395be3 ILT |
933 | struct bfd_link_info *info; |
934 | const char *warning; | |
7d6439d9 ILT |
935 | const char *symbol; |
936 | bfd *abfd; | |
937 | asection *section; | |
938 | bfd_vma address; | |
2fa0b342 | 939 | { |
4b7d2399 ILT |
940 | /* This is a hack to support warn_multiple_gp. FIXME: This should |
941 | have a cleaner interface, but what? */ | |
942 | if (! config.warn_multiple_gp | |
943 | && strcmp (warning, "using multiple gp values") == 0) | |
944 | return true; | |
945 | ||
7d6439d9 ILT |
946 | if (section != NULL) |
947 | einfo ("%C: %s\n", abfd, section, address, warning); | |
948 | else if (abfd == NULL) | |
949 | einfo ("%P: %s\n", warning); | |
950 | else if (symbol == NULL) | |
951 | einfo ("%B: %s\n", abfd, warning); | |
952 | else | |
953 | { | |
954 | lang_input_statement_type *entry; | |
955 | asymbol **asymbols; | |
956 | struct warning_callback_info info; | |
957 | ||
958 | /* Look through the relocs to see if we can find a plausible | |
959 | address. */ | |
960 | ||
961 | entry = (lang_input_statement_type *) abfd->usrdata; | |
962 | if (entry != NULL && entry->asymbols != NULL) | |
963 | asymbols = entry->asymbols; | |
964 | else | |
965 | { | |
966 | long symsize; | |
967 | long symbol_count; | |
968 | ||
969 | symsize = bfd_get_symtab_upper_bound (abfd); | |
970 | if (symsize < 0) | |
971 | einfo ("%B%F: could not read symbols: %E\n", abfd); | |
972 | asymbols = (asymbol **) xmalloc (symsize); | |
973 | symbol_count = bfd_canonicalize_symtab (abfd, asymbols); | |
974 | if (symbol_count < 0) | |
975 | einfo ("%B%F: could not read symbols: %E\n", abfd); | |
976 | if (entry != NULL) | |
977 | { | |
978 | entry->asymbols = asymbols; | |
979 | entry->symbol_count = symbol_count; | |
980 | } | |
981 | } | |
982 | ||
983 | info.found = false; | |
984 | info.warning = warning; | |
985 | info.symbol = symbol; | |
986 | info.asymbols = asymbols; | |
987 | bfd_map_over_sections (abfd, warning_find_reloc, (PTR) &info); | |
988 | ||
989 | if (! info.found) | |
990 | einfo ("%B: %s\n", abfd, warning); | |
991 | } | |
992 | ||
b9395be3 | 993 | return true; |
2fa0b342 DHW |
994 | } |
995 | ||
7d6439d9 ILT |
996 | /* This is called by warning_callback for each section. It checks the |
997 | relocs of the section to see if it can find a reference to the | |
998 | symbol which triggered the warning. If it can, it uses the reloc | |
999 | to give an error message with a file and line number. */ | |
1000 | ||
1001 | static void | |
1002 | warning_find_reloc (abfd, sec, iarg) | |
1003 | bfd *abfd; | |
1004 | asection *sec; | |
1005 | PTR iarg; | |
1006 | { | |
1007 | struct warning_callback_info *info = (struct warning_callback_info *) iarg; | |
1008 | long relsize; | |
1009 | arelent **relpp; | |
1010 | long relcount; | |
1011 | arelent **p, **pend; | |
1012 | ||
1013 | if (info->found) | |
1014 | return; | |
1015 | ||
1016 | relsize = bfd_get_reloc_upper_bound (abfd, sec); | |
1017 | if (relsize < 0) | |
1018 | einfo ("%B%F: could not read relocs: %E\n", abfd); | |
1019 | if (relsize == 0) | |
1020 | return; | |
1021 | ||
1022 | relpp = (arelent **) xmalloc (relsize); | |
1023 | relcount = bfd_canonicalize_reloc (abfd, sec, relpp, info->asymbols); | |
1024 | if (relcount < 0) | |
1025 | einfo ("%B%F: could not read relocs: %E\n", abfd); | |
1026 | ||
1027 | p = relpp; | |
1028 | pend = p + relcount; | |
1029 | for (; p < pend && *p != NULL; p++) | |
1030 | { | |
1031 | arelent *q = *p; | |
1032 | ||
1033 | if (q->sym_ptr_ptr != NULL | |
1034 | && *q->sym_ptr_ptr != NULL | |
1035 | && strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), info->symbol) == 0) | |
1036 | { | |
1037 | /* We found a reloc for the symbol we are looking for. */ | |
1038 | einfo ("%C: %s\n", abfd, sec, q->address, info->warning); | |
1039 | info->found = true; | |
1040 | break; | |
1041 | } | |
1042 | } | |
1043 | ||
1044 | free (relpp); | |
1045 | } | |
1046 | ||
b9395be3 | 1047 | /* This is called when an undefined symbol is found. */ |
2fa0b342 | 1048 | |
b9395be3 ILT |
1049 | /*ARGSUSED*/ |
1050 | static boolean | |
1051 | undefined_symbol (info, name, abfd, section, address) | |
1052 | struct bfd_link_info *info; | |
1053 | const char *name; | |
1054 | bfd *abfd; | |
1055 | asection *section; | |
1056 | bfd_vma address; | |
1057 | { | |
1058 | static char *error_name; | |
1059 | static unsigned int error_count; | |
29f33467 | 1060 | |
b9395be3 | 1061 | #define MAX_ERRORS_IN_A_ROW 5 |
8a045e50 | 1062 | |
809ee7e0 ILT |
1063 | if (config.warn_once) |
1064 | { | |
1065 | static struct bfd_hash_table *hash; | |
1066 | ||
1067 | /* Only warn once about a particular undefined symbol. */ | |
1068 | ||
1069 | if (hash == NULL) | |
1070 | { | |
1071 | hash = ((struct bfd_hash_table *) | |
1072 | xmalloc (sizeof (struct bfd_hash_table))); | |
1073 | if (! bfd_hash_table_init (hash, bfd_hash_newfunc)) | |
1074 | einfo ("%F%P: bfd_hash_table_init failed: %E\n"); | |
1075 | } | |
1076 | ||
1077 | if (bfd_hash_lookup (hash, name, false, false) != NULL) | |
1078 | return true; | |
1079 | ||
1080 | if (bfd_hash_lookup (hash, name, true, true) == NULL) | |
1081 | einfo ("%F%P: bfd_hash_lookup failed: %E\n"); | |
1082 | } | |
1083 | ||
b9395be3 ILT |
1084 | /* We never print more than a reasonable number of errors in a row |
1085 | for a single symbol. */ | |
1086 | if (error_name != (char *) NULL | |
1087 | && strcmp (name, error_name) == 0) | |
1088 | ++error_count; | |
1089 | else | |
e47bfa63 | 1090 | { |
b9395be3 ILT |
1091 | error_count = 0; |
1092 | if (error_name != (char *) NULL) | |
1093 | free (error_name); | |
1094 | error_name = buystring (name); | |
1095 | } | |
2fa0b342 | 1096 | |
23244cd6 ILT |
1097 | if (section != NULL) |
1098 | { | |
1099 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
1100 | einfo ("%X%C: undefined reference to `%T'\n", | |
1101 | abfd, section, address, name); | |
1102 | else if (error_count == MAX_ERRORS_IN_A_ROW) | |
1103 | einfo ("%D: more undefined references to `%T' follow\n", | |
1104 | abfd, section, address, name); | |
1105 | } | |
1106 | else | |
1107 | { | |
1108 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
1109 | einfo ("%X%B: undefined reference to `%T'\n", | |
1110 | abfd, name); | |
1111 | else if (error_count == MAX_ERRORS_IN_A_ROW) | |
1112 | einfo ("%B: more undefined references to `%T' follow\n", | |
1113 | abfd, name); | |
1114 | } | |
2fa0b342 | 1115 | |
b9395be3 | 1116 | return true; |
2fa0b342 DHW |
1117 | } |
1118 | ||
b9395be3 | 1119 | /* This is called when a reloc overflows. */ |
2fa0b342 | 1120 | |
b9395be3 | 1121 | /*ARGSUSED*/ |
9f629407 | 1122 | static boolean |
5dad4c97 | 1123 | reloc_overflow (info, name, reloc_name, addend, abfd, section, address) |
b9395be3 | 1124 | struct bfd_link_info *info; |
5dad4c97 ILT |
1125 | const char *name; |
1126 | const char *reloc_name; | |
1127 | bfd_vma addend; | |
b9395be3 ILT |
1128 | bfd *abfd; |
1129 | asection *section; | |
1130 | bfd_vma address; | |
2fa0b342 | 1131 | { |
2a9fa50c ILT |
1132 | if (abfd == (bfd *) NULL) |
1133 | einfo ("%P%X: generated"); | |
1134 | else | |
1135 | einfo ("%X%C:", abfd, section, address); | |
1136 | einfo (" relocation truncated to fit: %s %T", reloc_name, name); | |
5dad4c97 ILT |
1137 | if (addend != 0) |
1138 | einfo ("+%v", addend); | |
1139 | einfo ("\n"); | |
b9395be3 ILT |
1140 | return true; |
1141 | } | |
2fa0b342 | 1142 | |
b9395be3 | 1143 | /* This is called when a dangerous relocation is made. */ |
3e4c643d | 1144 | |
b9395be3 ILT |
1145 | /*ARGSUSED*/ |
1146 | static boolean | |
1147 | reloc_dangerous (info, message, abfd, section, address) | |
1148 | struct bfd_link_info *info; | |
1149 | const char *message; | |
1150 | bfd *abfd; | |
1151 | asection *section; | |
1152 | bfd_vma address; | |
1153 | { | |
2a9fa50c ILT |
1154 | if (abfd == (bfd *) NULL) |
1155 | einfo ("%P%X: generated"); | |
1156 | else | |
1157 | einfo ("%X%C:", abfd, section, address); | |
1158 | einfo ("dangerous relocation: %s\n", message); | |
b9395be3 ILT |
1159 | return true; |
1160 | } | |
973e421e | 1161 | |
b9395be3 ILT |
1162 | /* This is called when a reloc is being generated attached to a symbol |
1163 | that is not being output. */ | |
2fa0b342 | 1164 | |
b9395be3 ILT |
1165 | /*ARGSUSED*/ |
1166 | static boolean | |
1167 | unattached_reloc (info, name, abfd, section, address) | |
1168 | struct bfd_link_info *info; | |
1169 | const char *name; | |
1170 | bfd *abfd; | |
1171 | asection *section; | |
1172 | bfd_vma address; | |
1173 | { | |
2a9fa50c ILT |
1174 | if (abfd == (bfd *) NULL) |
1175 | einfo ("%P%X: generated"); | |
1176 | else | |
1177 | einfo ("%X%C:", abfd, section, address); | |
1178 | einfo (" reloc refers to symbol `%T' which is not being output\n", name); | |
b9395be3 | 1179 | return true; |
2fa0b342 | 1180 | } |
8a045e50 | 1181 | |
b9395be3 ILT |
1182 | /* This is called when a symbol in notice_hash is found. Symbols are |
1183 | put in notice_hash using the -y option. */ | |
1184 | ||
1185 | /*ARGSUSED*/ | |
1186 | static boolean | |
1187 | notice_ysym (info, name, abfd, section, value) | |
1188 | struct bfd_link_info *info; | |
1189 | const char *name; | |
1190 | bfd *abfd; | |
1191 | asection *section; | |
1192 | bfd_vma value; | |
8a045e50 | 1193 | { |
b9395be3 | 1194 | einfo ("%B: %s %s\n", abfd, |
cc23cc69 | 1195 | bfd_is_und_section (section) ? "reference to" : "definition of", |
b9395be3 ILT |
1196 | name); |
1197 | return true; | |
8a045e50 | 1198 | } |