Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Main program of GNU linker. |
4e5bae56 | 2 | Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
cdc0d45e | 3 | 2002, 2003 |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | Written by Steve Chamberlain steve@cygnus.com | |
6 | ||
2fa9fc65 | 7 | This file is part of GLD, the Gnu Linker. |
252b5132 | 8 | |
2fa9fc65 NC |
9 | GLD is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2, or (at your option) | |
12 | any later version. | |
252b5132 | 13 | |
2fa9fc65 NC |
14 | GLD is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
252b5132 | 18 | |
2fa9fc65 NC |
19 | You should have received a copy of the GNU General Public License |
20 | along with GLD; see the file COPYING. If not, write to the Free | |
21 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
22 | 02111-1307, USA. */ | |
252b5132 RH |
23 | |
24 | #include "bfd.h" | |
25 | #include "sysdep.h" | |
26 | #include <stdio.h> | |
3882b010 | 27 | #include "safe-ctype.h" |
252b5132 RH |
28 | #include "libiberty.h" |
29 | #include "progress.h" | |
30 | #include "bfdlink.h" | |
5af11cab | 31 | #include "filenames.h" |
252b5132 RH |
32 | |
33 | #include "ld.h" | |
34 | #include "ldmain.h" | |
35 | #include "ldmisc.h" | |
36 | #include "ldwrite.h" | |
252b5132 RH |
37 | #include "ldexp.h" |
38 | #include "ldlang.h" | |
df2a7313 | 39 | #include <ldgram.h> |
252b5132 RH |
40 | #include "ldlex.h" |
41 | #include "ldfile.h" | |
b71e2778 | 42 | #include "ldemul.h" |
252b5132 RH |
43 | #include "ldctor.h" |
44 | ||
6d5e62f8 | 45 | /* Somewhere above, sys/stat.h got included . . . . */ |
252b5132 RH |
46 | #if !defined(S_ISDIR) && defined(S_IFDIR) |
47 | #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) | |
48 | #endif | |
49 | ||
50 | #include <string.h> | |
51 | ||
52 | #ifdef HAVE_SBRK | |
53 | #ifdef NEED_DECLARATION_SBRK | |
54 | extern PTR sbrk (); | |
55 | #endif | |
56 | #endif | |
57 | ||
9c8ebd6a DJ |
58 | #ifndef TARGET_SYSTEM_ROOT |
59 | #define TARGET_SYSTEM_ROOT "" | |
60 | #endif | |
61 | ||
4e5bae56 DJ |
62 | int main PARAMS ((int, char **)); |
63 | ||
252b5132 RH |
64 | static char *get_emulation PARAMS ((int, char **)); |
65 | static void set_scripts_dir PARAMS ((void)); | |
66 | ||
67 | /* EXPORTS */ | |
68 | ||
69 | char *default_target; | |
70 | const char *output_filename = "a.out"; | |
71 | ||
72 | /* Name this program was invoked by. */ | |
73 | char *program_name; | |
74 | ||
9c8ebd6a DJ |
75 | /* The prefix for system library directories. */ |
76 | char *ld_sysroot; | |
77 | ||
6d5e62f8 | 78 | /* The file that we're creating. */ |
252b5132 RH |
79 | bfd *output_bfd = 0; |
80 | ||
81 | /* Set by -G argument, for MIPS ECOFF target. */ | |
82 | int g_switch_value = 8; | |
83 | ||
84 | /* Nonzero means print names of input files as processed. */ | |
b34976b6 | 85 | bfd_boolean trace_files; |
252b5132 RH |
86 | |
87 | /* Nonzero means same, but note open failures, too. */ | |
b34976b6 | 88 | bfd_boolean trace_file_tries; |
252b5132 RH |
89 | |
90 | /* Nonzero means version number was printed, so exit successfully | |
91 | instead of complaining if no input files are given. */ | |
b34976b6 | 92 | bfd_boolean version_printed; |
252b5132 RH |
93 | |
94 | /* Nonzero means link in every member of an archive. */ | |
b34976b6 | 95 | bfd_boolean whole_archive; |
252b5132 | 96 | |
b34976b6 AM |
97 | /* TRUE if we should demangle symbol names. */ |
98 | bfd_boolean demangling; | |
252b5132 RH |
99 | |
100 | args_type command_line; | |
101 | ||
102 | ld_config_type config; | |
103 | ||
104 | static void remove_output PARAMS ((void)); | |
b34976b6 AM |
105 | static bfd_boolean check_for_scripts_dir PARAMS ((char *dir)); |
106 | static bfd_boolean add_archive_element PARAMS ((struct bfd_link_info *, bfd *, | |
252b5132 | 107 | const char *)); |
b34976b6 | 108 | static bfd_boolean multiple_definition PARAMS ((struct bfd_link_info *, |
252b5132 RH |
109 | const char *, |
110 | bfd *, asection *, bfd_vma, | |
111 | bfd *, asection *, bfd_vma)); | |
b34976b6 | 112 | static bfd_boolean multiple_common PARAMS ((struct bfd_link_info *, |
252b5132 RH |
113 | const char *, bfd *, |
114 | enum bfd_link_hash_type, bfd_vma, | |
115 | bfd *, enum bfd_link_hash_type, | |
116 | bfd_vma)); | |
b34976b6 | 117 | static bfd_boolean add_to_set PARAMS ((struct bfd_link_info *, |
252b5132 RH |
118 | struct bfd_link_hash_entry *, |
119 | bfd_reloc_code_real_type, | |
120 | bfd *, asection *, bfd_vma)); | |
b34976b6 AM |
121 | static bfd_boolean constructor_callback PARAMS ((struct bfd_link_info *, |
122 | bfd_boolean constructor, | |
252b5132 RH |
123 | const char *name, |
124 | bfd *, asection *, bfd_vma)); | |
b34976b6 | 125 | static bfd_boolean warning_callback PARAMS ((struct bfd_link_info *, |
252b5132 RH |
126 | const char *, const char *, bfd *, |
127 | asection *, bfd_vma)); | |
128 | static void warning_find_reloc PARAMS ((bfd *, asection *, PTR)); | |
b34976b6 | 129 | static bfd_boolean undefined_symbol PARAMS ((struct bfd_link_info *, |
252b5132 | 130 | const char *, bfd *, |
b34976b6 AM |
131 | asection *, bfd_vma, bfd_boolean)); |
132 | static bfd_boolean reloc_overflow PARAMS ((struct bfd_link_info *, const char *, | |
252b5132 RH |
133 | const char *, bfd_vma, |
134 | bfd *, asection *, bfd_vma)); | |
b34976b6 | 135 | static bfd_boolean reloc_dangerous PARAMS ((struct bfd_link_info *, const char *, |
252b5132 | 136 | bfd *, asection *, bfd_vma)); |
b34976b6 | 137 | static bfd_boolean unattached_reloc PARAMS ((struct bfd_link_info *, |
252b5132 RH |
138 | const char *, bfd *, asection *, |
139 | bfd_vma)); | |
b34976b6 | 140 | static bfd_boolean notice PARAMS ((struct bfd_link_info *, const char *, |
252b5132 RH |
141 | bfd *, asection *, bfd_vma)); |
142 | ||
6d5e62f8 | 143 | static struct bfd_link_callbacks link_callbacks = { |
252b5132 RH |
144 | add_archive_element, |
145 | multiple_definition, | |
146 | multiple_common, | |
147 | add_to_set, | |
148 | constructor_callback, | |
149 | warning_callback, | |
150 | undefined_symbol, | |
151 | reloc_overflow, | |
152 | reloc_dangerous, | |
153 | unattached_reloc, | |
154 | notice | |
155 | }; | |
156 | ||
157 | struct bfd_link_info link_info; | |
158 | \f | |
159 | static void | |
160 | remove_output () | |
161 | { | |
6d5e62f8 | 162 | if (output_filename) |
252b5132 RH |
163 | { |
164 | if (output_bfd && output_bfd->iostream) | |
6d5e62f8 | 165 | fclose ((FILE *) (output_bfd->iostream)); |
252b5132 RH |
166 | if (delete_output_file_on_failure) |
167 | unlink (output_filename); | |
168 | } | |
169 | } | |
170 | ||
171 | int | |
172 | main (argc, argv) | |
173 | int argc; | |
174 | char **argv; | |
175 | { | |
176 | char *emulation; | |
177 | long start_time = get_run_time (); | |
178 | ||
179 | #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) | |
180 | setlocale (LC_MESSAGES, ""); | |
3882b010 L |
181 | #endif |
182 | #if defined (HAVE_SETLOCALE) | |
183 | setlocale (LC_CTYPE, ""); | |
252b5132 RH |
184 | #endif |
185 | bindtextdomain (PACKAGE, LOCALEDIR); | |
186 | textdomain (PACKAGE); | |
187 | ||
188 | program_name = argv[0]; | |
189 | xmalloc_set_program_name (program_name); | |
190 | ||
191 | START_PROGRESS (program_name, 0); | |
192 | ||
193 | bfd_init (); | |
194 | ||
195 | bfd_set_error_program_name (program_name); | |
196 | ||
197 | xatexit (remove_output); | |
198 | ||
9c8ebd6a DJ |
199 | #ifdef TARGET_SYSTEM_ROOT_RELOCATABLE |
200 | ld_sysroot = make_relative_prefix (program_name, BINDIR, | |
201 | TARGET_SYSTEM_ROOT); | |
202 | if (ld_sysroot) | |
203 | { | |
204 | struct stat s; | |
205 | int res = stat (ld_sysroot, &s) == 0 && S_ISDIR (s.st_mode); | |
206 | if (!res) | |
207 | { | |
208 | free (ld_sysroot); | |
209 | ld_sysroot = TARGET_SYSTEM_ROOT; | |
210 | } | |
211 | } | |
212 | #else | |
213 | ld_sysroot = TARGET_SYSTEM_ROOT; | |
214 | #endif | |
215 | ||
252b5132 RH |
216 | /* Set the default BFD target based on the configured target. Doing |
217 | this permits the linker to be configured for a particular target, | |
218 | and linked against a shared BFD library which was configured for | |
219 | a different target. The macro TARGET is defined by Makefile. */ | |
220 | if (! bfd_set_default_target (TARGET)) | |
221 | { | |
222 | einfo (_("%X%P: can't set BFD default target to `%s': %E\n"), TARGET); | |
223 | xexit (1); | |
224 | } | |
225 | ||
b47c4208 AM |
226 | #if YYDEBUG |
227 | { | |
228 | extern int yydebug; | |
229 | yydebug = 1; | |
230 | } | |
231 | #endif | |
232 | ||
252b5132 | 233 | /* Initialize the data about options. */ |
b34976b6 AM |
234 | trace_files = trace_file_tries = version_printed = FALSE; |
235 | whole_archive = FALSE; | |
236 | config.build_constructors = TRUE; | |
237 | config.dynamic_link = FALSE; | |
238 | config.has_shared = FALSE; | |
a854a4a7 AM |
239 | config.split_by_reloc = (unsigned) -1; |
240 | config.split_by_file = (bfd_size_type) -1; | |
b34976b6 AM |
241 | command_line.force_common_definition = FALSE; |
242 | command_line.inhibit_common_definition = FALSE; | |
252b5132 RH |
243 | command_line.interpreter = NULL; |
244 | command_line.rpath = NULL; | |
b34976b6 AM |
245 | command_line.warn_mismatch = TRUE; |
246 | command_line.check_section_addresses = TRUE; | |
312b768e | 247 | command_line.accept_unknown_input_arch = FALSE; |
252b5132 RH |
248 | |
249 | /* We initialize DEMANGLING based on the environment variable | |
250 | COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the | |
251 | output of the linker, unless COLLECT_NO_DEMANGLE is set in the | |
252 | environment. Acting the same way here lets us provide the same | |
253 | interface by default. */ | |
254 | demangling = getenv ("COLLECT_NO_DEMANGLE") == NULL; | |
255 | ||
b34976b6 AM |
256 | link_info.relocateable = FALSE; |
257 | link_info.emitrelocations = FALSE; | |
b5067602 | 258 | link_info.task_link = FALSE; |
b34976b6 AM |
259 | link_info.shared = FALSE; |
260 | link_info.symbolic = FALSE; | |
261 | link_info.export_dynamic = FALSE; | |
262 | link_info.static_link = FALSE; | |
263 | link_info.traditional_format = FALSE; | |
264 | link_info.optimize = FALSE; | |
265 | link_info.no_undefined = FALSE; | |
266 | link_info.allow_shlib_undefined = FALSE; | |
267 | link_info.allow_multiple_definition = FALSE; | |
268 | link_info.allow_undefined_version = TRUE; | |
b5067602 AM |
269 | link_info.keep_memory = TRUE; |
270 | link_info.notice_all = FALSE; | |
271 | link_info.nocopyreloc = FALSE; | |
272 | link_info.new_dtags = FALSE; | |
273 | link_info.combreloc = TRUE; | |
274 | link_info.eh_frame_hdr = FALSE; | |
d5cd3933 | 275 | link_info.strip_discarded = TRUE; |
252b5132 | 276 | link_info.strip = strip_none; |
f5fa8ca2 | 277 | link_info.discard = discard_sec_merge; |
b5067602 AM |
278 | link_info.common_skip_ar_aymbols = bfd_link_common_skip_none; |
279 | link_info.callbacks = &link_callbacks; | |
252b5132 RH |
280 | link_info.hash = NULL; |
281 | link_info.keep_hash = NULL; | |
252b5132 RH |
282 | link_info.notice_hash = NULL; |
283 | link_info.wrap_hash = NULL; | |
b5067602 AM |
284 | link_info.input_bfds = NULL; |
285 | link_info.create_object_symbols_section = NULL; | |
286 | link_info.gc_sym_list = NULL; | |
287 | link_info.base_file = NULL; | |
3dbf70a2 MM |
288 | /* SVR4 linkers seem to set DT_INIT and DT_FINI based on magic _init |
289 | and _fini symbols. We are compatible. */ | |
290 | link_info.init_function = "_init"; | |
291 | link_info.fini_function = "_fini"; | |
b5067602 | 292 | link_info.mpc860c0 = 0; |
e0076ab3 | 293 | link_info.pei386_auto_import = -1; |
b34976b6 | 294 | link_info.pei386_runtime_pseudo_reloc = FALSE; |
db6751f2 | 295 | link_info.spare_dynamic_tags = 5; |
b5067602 AM |
296 | link_info.flags = (bfd_vma) 0; |
297 | link_info.flags_1 = (bfd_vma) 0; | |
3dbf70a2 | 298 | |
252b5132 RH |
299 | ldfile_add_arch (""); |
300 | ||
b34976b6 AM |
301 | config.make_executable = TRUE; |
302 | force_make_executable = FALSE; | |
303 | config.magic_demand_paged = TRUE; | |
304 | config.text_read_only = TRUE; | |
252b5132 RH |
305 | |
306 | emulation = get_emulation (argc, argv); | |
307 | ldemul_choose_mode (emulation); | |
742aeb63 | 308 | default_target = ldemul_choose_target (argc, argv); |
252b5132 RH |
309 | lang_init (); |
310 | ldemul_before_parse (); | |
b34976b6 | 311 | lang_has_input_file = FALSE; |
252b5132 RH |
312 | parse_args (argc, argv); |
313 | ||
314 | ldemul_set_symbols (); | |
315 | ||
316 | if (link_info.relocateable) | |
317 | { | |
318 | if (command_line.gc_sections) | |
319 | einfo ("%P%F: --gc-sections and -r may not be used together\n"); | |
320 | if (link_info.mpc860c0) | |
321 | einfo (_("%P%F: -r and --mpc860c0 may not be used together\n")); | |
322 | else if (command_line.relax) | |
323 | einfo (_("%P%F: --relax and -r may not be used together\n")); | |
324 | if (link_info.shared) | |
325 | einfo (_("%P%F: -r and -shared may not be used together\n")); | |
326 | } | |
327 | ||
7333607e JJ |
328 | if (! link_info.shared) |
329 | { | |
330 | if (command_line.filter_shlib) | |
e97cb84f | 331 | einfo (_("%P%F: -F may not be used without -shared\n")); |
7333607e | 332 | if (command_line.auxiliary_filters) |
e97cb84f | 333 | einfo (_("%P%F: -f may not be used without -shared\n")); |
7333607e JJ |
334 | } |
335 | ||
252b5132 RH |
336 | /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I |
337 | don't see how else this can be handled, since in this case we | |
338 | must preserve all externally visible symbols. */ | |
339 | if (link_info.relocateable && link_info.strip == strip_all) | |
340 | { | |
341 | link_info.strip = strip_debugger; | |
f5fa8ca2 | 342 | if (link_info.discard == discard_sec_merge) |
252b5132 RH |
343 | link_info.discard = discard_all; |
344 | } | |
345 | ||
346 | /* This essentially adds another -L directory so this must be done after | |
347 | the -L's in argv have been processed. */ | |
348 | set_scripts_dir (); | |
349 | ||
b9a8de1e NC |
350 | /* If we have not already opened and parsed a linker script |
351 | read the emulation's appropriate default script. */ | |
b90e1c6f | 352 | if (saved_script_handle == NULL) |
252b5132 | 353 | { |
252b5132 | 354 | int isfile; |
b7a26f91 | 355 | char *s = ldemul_get_script (&isfile); |
252b5132 RH |
356 | |
357 | if (isfile) | |
358 | ldfile_open_command_file (s); | |
359 | else | |
b7a26f91 | 360 | { |
252b5132 RH |
361 | lex_string = s; |
362 | lex_redirect (s); | |
363 | } | |
364 | parser_input = input_script; | |
365 | yyparse (); | |
366 | lex_string = NULL; | |
367 | } | |
368 | ||
b9a8de1e NC |
369 | if (trace_file_tries) |
370 | { | |
9cb61eab AM |
371 | if (saved_script_handle) |
372 | info_msg (_("using external linker script:")); | |
373 | else | |
374 | info_msg (_("using internal linker script:")); | |
375 | info_msg ("\n==================================================\n"); | |
b9a8de1e NC |
376 | |
377 | if (saved_script_handle) | |
378 | { | |
74699268 | 379 | static const int ld_bufsz = 8193; |
b9a8de1e | 380 | size_t n; |
74699268 | 381 | char *buf = xmalloc (ld_bufsz); |
b9a8de1e NC |
382 | |
383 | rewind (saved_script_handle); | |
74699268 | 384 | while ((n = fread (buf, 1, ld_bufsz - 1, saved_script_handle)) > 0) |
b9a8de1e | 385 | { |
b7a26f91 | 386 | buf[n] = 0; |
b9a8de1e NC |
387 | info_msg (buf); |
388 | } | |
389 | rewind (saved_script_handle); | |
390 | free (buf); | |
391 | } | |
392 | else | |
393 | { | |
394 | int isfile; | |
395 | ||
b7a26f91 | 396 | info_msg (ldemul_get_script (&isfile)); |
b9a8de1e | 397 | } |
b7a26f91 | 398 | |
b9a8de1e NC |
399 | info_msg ("\n==================================================\n"); |
400 | } | |
401 | ||
252b5132 RH |
402 | lang_final (); |
403 | ||
b34976b6 | 404 | if (!lang_has_input_file) |
252b5132 RH |
405 | { |
406 | if (version_printed) | |
407 | xexit (0); | |
408 | einfo (_("%P%F: no input files\n")); | |
409 | } | |
410 | ||
411 | if (trace_files) | |
412 | { | |
413 | info_msg (_("%P: mode %s\n"), emulation); | |
414 | } | |
415 | ||
416 | ldemul_after_parse (); | |
417 | ||
252b5132 RH |
418 | if (config.map_filename) |
419 | { | |
420 | if (strcmp (config.map_filename, "-") == 0) | |
421 | { | |
422 | config.map_file = stdout; | |
423 | } | |
424 | else | |
425 | { | |
426 | config.map_file = fopen (config.map_filename, FOPEN_WT); | |
427 | if (config.map_file == (FILE *) NULL) | |
428 | { | |
429 | bfd_set_error (bfd_error_system_call); | |
430 | einfo (_("%P%F: cannot open map file %s: %E\n"), | |
431 | config.map_filename); | |
432 | } | |
433 | } | |
434 | } | |
435 | ||
252b5132 RH |
436 | lang_process (); |
437 | ||
438 | /* Print error messages for any missing symbols, for any warning | |
6d5e62f8 | 439 | symbols, and possibly multiple definitions. */ |
252b5132 | 440 | |
252b5132 RH |
441 | if (link_info.relocateable) |
442 | output_bfd->flags &= ~EXEC_P; | |
443 | else | |
444 | output_bfd->flags |= EXEC_P; | |
445 | ||
446 | ldwrite (); | |
447 | ||
448 | if (config.map_file != NULL) | |
449 | lang_map (); | |
450 | if (command_line.cref) | |
451 | output_cref (config.map_file != NULL ? config.map_file : stdout); | |
452 | if (nocrossref_list != NULL) | |
453 | check_nocrossrefs (); | |
454 | ||
455 | /* Even if we're producing relocateable output, some non-fatal errors should | |
456 | be reported in the exit status. (What non-fatal errors, if any, do we | |
457 | want to ignore for relocateable output?) */ | |
458 | ||
b34976b6 | 459 | if (!config.make_executable && !force_make_executable) |
252b5132 | 460 | { |
b34976b6 | 461 | if (trace_files) |
252b5132 RH |
462 | { |
463 | einfo (_("%P: link errors found, deleting executable `%s'\n"), | |
464 | output_filename); | |
465 | } | |
466 | ||
467 | /* The file will be removed by remove_output. */ | |
468 | ||
469 | xexit (1); | |
470 | } | |
471 | else | |
472 | { | |
473 | if (! bfd_close (output_bfd)) | |
474 | einfo (_("%F%B: final close failed: %E\n"), output_bfd); | |
475 | ||
476 | /* If the --force-exe-suffix is enabled, and we're making an | |
6d5e62f8 KH |
477 | executable file and it doesn't end in .exe, copy it to one |
478 | which does. */ | |
252b5132 RH |
479 | if (! link_info.relocateable && command_line.force_exe_suffix) |
480 | { | |
481 | int len = strlen (output_filename); | |
6d5e62f8 | 482 | if (len < 4 |
252b5132 RH |
483 | || (strcasecmp (output_filename + len - 4, ".exe") != 0 |
484 | && strcasecmp (output_filename + len - 4, ".dll") != 0)) | |
485 | { | |
486 | FILE *src; | |
487 | FILE *dst; | |
488 | const int bsize = 4096; | |
489 | char *buf = xmalloc (bsize); | |
490 | int l; | |
491 | char *dst_name = xmalloc (len + 5); | |
492 | strcpy (dst_name, output_filename); | |
493 | strcat (dst_name, ".exe"); | |
494 | src = fopen (output_filename, FOPEN_RB); | |
495 | dst = fopen (dst_name, FOPEN_WB); | |
496 | ||
497 | if (!src) | |
498 | einfo (_("%X%P: unable to open for source of copy `%s'\n"), output_filename); | |
499 | if (!dst) | |
500 | einfo (_("%X%P: unable to open for destination of copy `%s'\n"), dst_name); | |
501 | while ((l = fread (buf, 1, bsize, src)) > 0) | |
502 | { | |
503 | int done = fwrite (buf, 1, l, dst); | |
504 | if (done != l) | |
505 | { | |
506 | einfo (_("%P: Error writing file `%s'\n"), dst_name); | |
507 | } | |
508 | } | |
509 | fclose (src); | |
510 | if (fclose (dst) == EOF) | |
511 | { | |
512 | einfo (_("%P: Error closing file `%s'\n"), dst_name); | |
513 | } | |
514 | free (dst_name); | |
515 | free (buf); | |
516 | } | |
517 | } | |
518 | } | |
519 | ||
520 | END_PROGRESS (program_name); | |
521 | ||
522 | if (config.stats) | |
523 | { | |
524 | #ifdef HAVE_SBRK | |
525 | char *lim = (char *) sbrk (0); | |
526 | #endif | |
527 | long run_time = get_run_time () - start_time; | |
528 | ||
529 | fprintf (stderr, _("%s: total time in link: %ld.%06ld\n"), | |
530 | program_name, run_time / 1000000, run_time % 1000000); | |
531 | #ifdef HAVE_SBRK | |
532 | fprintf (stderr, _("%s: data size %ld\n"), program_name, | |
533 | (long) (lim - (char *) &environ)); | |
534 | #endif | |
535 | } | |
536 | ||
537 | /* Prevent remove_output from doing anything, after a successful link. */ | |
538 | output_filename = NULL; | |
539 | ||
540 | xexit (0); | |
541 | return 0; | |
542 | } | |
543 | ||
544 | /* We need to find any explicitly given emulation in order to initialize the | |
545 | state that's needed by the lex&yacc argument parser (parse_args). */ | |
546 | ||
547 | static char * | |
548 | get_emulation (argc, argv) | |
549 | int argc; | |
550 | char **argv; | |
551 | { | |
552 | char *emulation; | |
553 | int i; | |
554 | ||
555 | emulation = getenv (EMULATION_ENVIRON); | |
556 | if (emulation == NULL) | |
557 | emulation = DEFAULT_EMULATION; | |
558 | ||
559 | for (i = 1; i < argc; i++) | |
560 | { | |
561 | if (!strncmp (argv[i], "-m", 2)) | |
562 | { | |
563 | if (argv[i][2] == '\0') | |
564 | { | |
565 | /* -m EMUL */ | |
566 | if (i < argc - 1) | |
567 | { | |
568 | emulation = argv[i + 1]; | |
569 | i++; | |
570 | } | |
571 | else | |
572 | { | |
6d5e62f8 | 573 | einfo (_("%P%F: missing argument to -m\n")); |
252b5132 RH |
574 | } |
575 | } | |
576 | else if (strcmp (argv[i], "-mips1") == 0 | |
577 | || strcmp (argv[i], "-mips2") == 0 | |
578 | || strcmp (argv[i], "-mips3") == 0 | |
39e5585e EC |
579 | || strcmp (argv[i], "-mips32") == 0 |
580 | || strcmp (argv[i], "-mips64") == 0 | |
d1cf510e NC |
581 | || strcmp (argv[i], "-mips4") == 0 |
582 | || strcmp (argv[i], "-mips5") == 0) | |
252b5132 | 583 | { |
31d677f9 | 584 | /* FIXME: The arguments -mips1, -mips2, -mips3, etc. are |
252b5132 RH |
585 | passed to the linker by some MIPS compilers. They |
586 | generally tell the linker to use a slightly different | |
587 | library path. Perhaps someday these should be | |
588 | implemented as emulations; until then, we just ignore | |
589 | the arguments and hope that nobody ever creates | |
590 | emulations named ips1, ips2 or ips3. */ | |
591 | } | |
592 | else if (strcmp (argv[i], "-m486") == 0) | |
593 | { | |
594 | /* FIXME: The argument -m486 is passed to the linker on | |
595 | some Linux systems. Hope that nobody creates an | |
596 | emulation named 486. */ | |
597 | } | |
598 | else | |
599 | { | |
600 | /* -mEMUL */ | |
601 | emulation = &argv[i][2]; | |
602 | } | |
603 | } | |
604 | } | |
605 | ||
606 | return emulation; | |
607 | } | |
608 | ||
609 | /* If directory DIR contains an "ldscripts" subdirectory, | |
b34976b6 AM |
610 | add DIR to the library search path and return TRUE, |
611 | else return FALSE. */ | |
252b5132 | 612 | |
b34976b6 | 613 | static bfd_boolean |
252b5132 RH |
614 | check_for_scripts_dir (dir) |
615 | char *dir; | |
616 | { | |
617 | size_t dirlen; | |
618 | char *buf; | |
619 | struct stat s; | |
b34976b6 | 620 | bfd_boolean res; |
252b5132 RH |
621 | |
622 | dirlen = strlen (dir); | |
623 | /* sizeof counts the terminating NUL. */ | |
6d5e62f8 | 624 | buf = (char *) xmalloc (dirlen + sizeof ("/ldscripts")); |
252b5132 RH |
625 | sprintf (buf, "%s/ldscripts", dir); |
626 | ||
627 | res = stat (buf, &s) == 0 && S_ISDIR (s.st_mode); | |
628 | free (buf); | |
629 | if (res) | |
b34976b6 | 630 | ldfile_add_library_path (dir, FALSE); |
252b5132 RH |
631 | return res; |
632 | } | |
633 | ||
634 | /* Set the default directory for finding script files. | |
635 | Libraries will be searched for here too, but that's ok. | |
636 | We look for the "ldscripts" directory in: | |
637 | ||
cdc0d45e DJ |
638 | SCRIPTDIR (passed from Makefile) |
639 | (adjusted according to the current location of the binary) | |
252b5132 RH |
640 | SCRIPTDIR (passed from Makefile) |
641 | the dir where this program is (for using it from the build tree) | |
cdc0d45e DJ |
642 | the dir where this program is/../lib |
643 | (for installing the tool suite elsewhere) */ | |
252b5132 RH |
644 | |
645 | static void | |
646 | set_scripts_dir () | |
647 | { | |
648 | char *end, *dir; | |
649 | size_t dirlen; | |
650 | ||
cdc0d45e DJ |
651 | dir = make_relative_prefix (program_name, BINDIR, SCRIPTDIR); |
652 | if (dir && check_for_scripts_dir (dir)) | |
653 | /* Success. Don't free dir. */ | |
654 | return; | |
655 | ||
656 | if (dir) | |
657 | free (dir); | |
658 | ||
252b5132 | 659 | if (check_for_scripts_dir (SCRIPTDIR)) |
6d5e62f8 KH |
660 | /* We've been installed normally. */ |
661 | return; | |
252b5132 RH |
662 | |
663 | /* Look for "ldscripts" in the dir where our binary is. */ | |
664 | end = strrchr (program_name, '/'); | |
5af11cab AM |
665 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
666 | { | |
667 | /* We could have \foo\bar, or /foo\bar. */ | |
668 | char *bslash = strrchr (program_name, '\\'); | |
2ab47eed | 669 | if (end == NULL || (bslash != NULL && bslash > end)) |
5af11cab AM |
670 | end = bslash; |
671 | } | |
672 | #endif | |
252b5132 RH |
673 | |
674 | if (end == NULL) | |
675 | { | |
676 | /* Don't look for ldscripts in the current directory. There is | |
677 | too much potential for confusion. */ | |
678 | return; | |
679 | } | |
680 | ||
681 | dirlen = end - program_name; | |
682 | /* Make a copy of program_name in dir. | |
683 | Leave room for later "/../lib". */ | |
684 | dir = (char *) xmalloc (dirlen + 8); | |
685 | strncpy (dir, program_name, dirlen); | |
686 | dir[dirlen] = '\0'; | |
687 | ||
688 | if (check_for_scripts_dir (dir)) | |
6d5e62f8 KH |
689 | /* Don't free dir. */ |
690 | return; | |
252b5132 RH |
691 | |
692 | /* Look for "ldscripts" in <the dir where our binary is>/../lib. */ | |
693 | strcpy (dir + dirlen, "/../lib"); | |
694 | if (check_for_scripts_dir (dir)) | |
695 | return; | |
696 | ||
6d5e62f8 KH |
697 | /* Well, we tried. */ |
698 | free (dir); | |
252b5132 RH |
699 | } |
700 | ||
701 | void | |
702 | add_ysym (name) | |
703 | const char *name; | |
704 | { | |
705 | if (link_info.notice_hash == (struct bfd_hash_table *) NULL) | |
706 | { | |
707 | link_info.notice_hash = ((struct bfd_hash_table *) | |
708 | xmalloc (sizeof (struct bfd_hash_table))); | |
709 | if (! bfd_hash_table_init_n (link_info.notice_hash, | |
710 | bfd_hash_newfunc, | |
711 | 61)) | |
712 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
6d5e62f8 | 713 | } |
252b5132 | 714 | |
b34976b6 | 715 | if (bfd_hash_lookup (link_info.notice_hash, name, TRUE, TRUE) |
252b5132 RH |
716 | == (struct bfd_hash_entry *) NULL) |
717 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); | |
718 | } | |
719 | ||
720 | /* Record a symbol to be wrapped, from the --wrap option. */ | |
721 | ||
722 | void | |
723 | add_wrap (name) | |
724 | const char *name; | |
725 | { | |
726 | if (link_info.wrap_hash == NULL) | |
727 | { | |
728 | link_info.wrap_hash = ((struct bfd_hash_table *) | |
729 | xmalloc (sizeof (struct bfd_hash_table))); | |
730 | if (! bfd_hash_table_init_n (link_info.wrap_hash, | |
731 | bfd_hash_newfunc, | |
732 | 61)) | |
733 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
734 | } | |
b34976b6 | 735 | if (bfd_hash_lookup (link_info.wrap_hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
736 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); |
737 | } | |
738 | ||
739 | /* Handle the -retain-symbols-file option. */ | |
740 | ||
741 | void | |
742 | add_keepsyms_file (filename) | |
743 | const char *filename; | |
744 | { | |
745 | FILE *file; | |
746 | char *buf; | |
747 | size_t bufsize; | |
748 | int c; | |
749 | ||
750 | if (link_info.strip == strip_some) | |
751 | einfo (_("%X%P: error: duplicate retain-symbols-file\n")); | |
752 | ||
753 | file = fopen (filename, "r"); | |
754 | if (file == (FILE *) NULL) | |
755 | { | |
756 | bfd_set_error (bfd_error_system_call); | |
757 | einfo ("%X%P: %s: %E\n", filename); | |
758 | return; | |
759 | } | |
760 | ||
761 | link_info.keep_hash = ((struct bfd_hash_table *) | |
762 | xmalloc (sizeof (struct bfd_hash_table))); | |
763 | if (! bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc)) | |
764 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
765 | ||
766 | bufsize = 100; | |
767 | buf = (char *) xmalloc (bufsize); | |
768 | ||
769 | c = getc (file); | |
770 | while (c != EOF) | |
771 | { | |
3882b010 | 772 | while (ISSPACE (c)) |
252b5132 RH |
773 | c = getc (file); |
774 | ||
775 | if (c != EOF) | |
776 | { | |
777 | size_t len = 0; | |
778 | ||
3882b010 | 779 | while (! ISSPACE (c) && c != EOF) |
252b5132 RH |
780 | { |
781 | buf[len] = c; | |
782 | ++len; | |
783 | if (len >= bufsize) | |
784 | { | |
785 | bufsize *= 2; | |
786 | buf = xrealloc (buf, bufsize); | |
787 | } | |
788 | c = getc (file); | |
789 | } | |
790 | ||
791 | buf[len] = '\0'; | |
792 | ||
b34976b6 | 793 | if (bfd_hash_lookup (link_info.keep_hash, buf, TRUE, TRUE) |
252b5132 RH |
794 | == (struct bfd_hash_entry *) NULL) |
795 | einfo (_("%P%F: bfd_hash_lookup for insertion failed: %E\n")); | |
796 | } | |
797 | } | |
798 | ||
799 | if (link_info.strip != strip_none) | |
800 | einfo (_("%P: `-retain-symbols-file' overrides `-s' and `-S'\n")); | |
801 | ||
802 | link_info.strip = strip_some; | |
803 | } | |
804 | \f | |
805 | /* Callbacks from the BFD linker routines. */ | |
806 | ||
807 | /* This is called when BFD has decided to include an archive member in | |
808 | a link. */ | |
809 | ||
b34976b6 | 810 | static bfd_boolean |
252b5132 | 811 | add_archive_element (info, abfd, name) |
87f2a346 | 812 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
813 | bfd *abfd; |
814 | const char *name; | |
815 | { | |
816 | lang_input_statement_type *input; | |
817 | ||
818 | input = ((lang_input_statement_type *) | |
819 | xmalloc (sizeof (lang_input_statement_type))); | |
820 | input->filename = abfd->filename; | |
821 | input->local_sym_name = abfd->filename; | |
822 | input->the_bfd = abfd; | |
823 | input->asymbols = NULL; | |
824 | input->next = NULL; | |
b34976b6 AM |
825 | input->just_syms_flag = FALSE; |
826 | input->loaded = FALSE; | |
827 | input->search_dirs_flag = FALSE; | |
252b5132 RH |
828 | |
829 | /* FIXME: The following fields are not set: header.next, | |
830 | header.type, closed, passive_position, symbol_count, | |
831 | next_real_file, is_archive, target, real. This bit of code is | |
832 | from the old decode_library_subfile function. I don't know | |
833 | whether any of those fields matters. */ | |
834 | ||
835 | ldlang_add_file (input); | |
836 | ||
837 | if (config.map_file != (FILE *) NULL) | |
838 | { | |
b34976b6 | 839 | static bfd_boolean header_printed; |
252b5132 RH |
840 | struct bfd_link_hash_entry *h; |
841 | bfd *from; | |
842 | int len; | |
843 | ||
b34976b6 | 844 | h = bfd_link_hash_lookup (link_info.hash, name, FALSE, FALSE, TRUE); |
252b5132 RH |
845 | |
846 | if (h == NULL) | |
847 | from = NULL; | |
848 | else | |
849 | { | |
850 | switch (h->type) | |
851 | { | |
852 | default: | |
853 | from = NULL; | |
854 | break; | |
855 | ||
856 | case bfd_link_hash_defined: | |
857 | case bfd_link_hash_defweak: | |
858 | from = h->u.def.section->owner; | |
859 | break; | |
860 | ||
861 | case bfd_link_hash_undefined: | |
862 | case bfd_link_hash_undefweak: | |
863 | from = h->u.undef.abfd; | |
864 | break; | |
865 | ||
866 | case bfd_link_hash_common: | |
867 | from = h->u.c.p->section->owner; | |
868 | break; | |
869 | } | |
870 | } | |
871 | ||
872 | if (! header_printed) | |
873 | { | |
874 | char buf[100]; | |
875 | ||
e3c8793a | 876 | sprintf (buf, _("Archive member included because of file (symbol)\n\n")); |
252b5132 | 877 | minfo ("%s", buf); |
b34976b6 | 878 | header_printed = TRUE; |
252b5132 RH |
879 | } |
880 | ||
881 | if (bfd_my_archive (abfd) == NULL) | |
882 | { | |
883 | minfo ("%s", bfd_get_filename (abfd)); | |
884 | len = strlen (bfd_get_filename (abfd)); | |
885 | } | |
886 | else | |
887 | { | |
888 | minfo ("%s(%s)", bfd_get_filename (bfd_my_archive (abfd)), | |
889 | bfd_get_filename (abfd)); | |
890 | len = (strlen (bfd_get_filename (bfd_my_archive (abfd))) | |
891 | + strlen (bfd_get_filename (abfd)) | |
892 | + 2); | |
893 | } | |
894 | ||
895 | if (len >= 29) | |
896 | { | |
897 | print_nl (); | |
898 | len = 0; | |
899 | } | |
900 | while (len < 30) | |
901 | { | |
902 | print_space (); | |
903 | ++len; | |
904 | } | |
905 | ||
906 | if (from != NULL) | |
907 | minfo ("%B ", from); | |
908 | if (h != NULL) | |
909 | minfo ("(%T)\n", h->root.string); | |
910 | else | |
911 | minfo ("(%s)\n", name); | |
912 | } | |
913 | ||
914 | if (trace_files || trace_file_tries) | |
915 | info_msg ("%I\n", input); | |
916 | ||
b34976b6 | 917 | return TRUE; |
252b5132 RH |
918 | } |
919 | ||
920 | /* This is called when BFD has discovered a symbol which is defined | |
921 | multiple times. */ | |
922 | ||
b34976b6 | 923 | static bfd_boolean |
252b5132 | 924 | multiple_definition (info, name, obfd, osec, oval, nbfd, nsec, nval) |
87f2a346 | 925 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
926 | const char *name; |
927 | bfd *obfd; | |
928 | asection *osec; | |
929 | bfd_vma oval; | |
930 | bfd *nbfd; | |
931 | asection *nsec; | |
932 | bfd_vma nval; | |
933 | { | |
934 | /* If either section has the output_section field set to | |
935 | bfd_abs_section_ptr, it means that the section is being | |
936 | discarded, and this is not really a multiple definition at all. | |
937 | FIXME: It would be cleaner to somehow ignore symbols defined in | |
938 | sections which are being discarded. */ | |
939 | if ((osec->output_section != NULL | |
940 | && ! bfd_is_abs_section (osec) | |
941 | && bfd_is_abs_section (osec->output_section)) | |
942 | || (nsec->output_section != NULL | |
943 | && ! bfd_is_abs_section (nsec) | |
944 | && bfd_is_abs_section (nsec->output_section))) | |
b34976b6 | 945 | return TRUE; |
252b5132 RH |
946 | |
947 | einfo (_("%X%C: multiple definition of `%T'\n"), | |
948 | nbfd, nsec, nval, name); | |
949 | if (obfd != (bfd *) NULL) | |
950 | einfo (_("%D: first defined here\n"), obfd, osec, oval); | |
9b14b192 NC |
951 | |
952 | if (command_line.relax) | |
953 | { | |
954 | einfo (_("%P: Disabling relaxation: it will not work with multiple definitions\n")); | |
955 | command_line.relax = 0; | |
956 | } | |
6d5e62f8 | 957 | |
b34976b6 | 958 | return TRUE; |
252b5132 RH |
959 | } |
960 | ||
961 | /* This is called when there is a definition of a common symbol, or | |
962 | when a common symbol is found for a symbol that is already defined, | |
963 | or when two common symbols are found. We only do something if | |
964 | -warn-common was used. */ | |
965 | ||
b34976b6 | 966 | static bfd_boolean |
252b5132 | 967 | multiple_common (info, name, obfd, otype, osize, nbfd, ntype, nsize) |
87f2a346 | 968 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
969 | const char *name; |
970 | bfd *obfd; | |
971 | enum bfd_link_hash_type otype; | |
972 | bfd_vma osize; | |
973 | bfd *nbfd; | |
974 | enum bfd_link_hash_type ntype; | |
975 | bfd_vma nsize; | |
976 | { | |
977 | if (! config.warn_common) | |
b34976b6 | 978 | return TRUE; |
252b5132 RH |
979 | |
980 | if (ntype == bfd_link_hash_defined | |
981 | || ntype == bfd_link_hash_defweak | |
982 | || ntype == bfd_link_hash_indirect) | |
983 | { | |
984 | ASSERT (otype == bfd_link_hash_common); | |
985 | einfo (_("%B: warning: definition of `%T' overriding common\n"), | |
986 | nbfd, name); | |
987 | if (obfd != NULL) | |
988 | einfo (_("%B: warning: common is here\n"), obfd); | |
989 | } | |
990 | else if (otype == bfd_link_hash_defined | |
991 | || otype == bfd_link_hash_defweak | |
992 | || otype == bfd_link_hash_indirect) | |
993 | { | |
994 | ASSERT (ntype == bfd_link_hash_common); | |
995 | einfo (_("%B: warning: common of `%T' overridden by definition\n"), | |
996 | nbfd, name); | |
997 | if (obfd != NULL) | |
998 | einfo (_("%B: warning: defined here\n"), obfd); | |
999 | } | |
1000 | else | |
1001 | { | |
1002 | ASSERT (otype == bfd_link_hash_common && ntype == bfd_link_hash_common); | |
1003 | if (osize > nsize) | |
1004 | { | |
1005 | einfo (_("%B: warning: common of `%T' overridden by larger common\n"), | |
1006 | nbfd, name); | |
1007 | if (obfd != NULL) | |
1008 | einfo (_("%B: warning: larger common is here\n"), obfd); | |
1009 | } | |
1010 | else if (nsize > osize) | |
1011 | { | |
1012 | einfo (_("%B: warning: common of `%T' overriding smaller common\n"), | |
1013 | nbfd, name); | |
1014 | if (obfd != NULL) | |
1015 | einfo (_("%B: warning: smaller common is here\n"), obfd); | |
1016 | } | |
1017 | else | |
1018 | { | |
1019 | einfo (_("%B: warning: multiple common of `%T'\n"), nbfd, name); | |
1020 | if (obfd != NULL) | |
1021 | einfo (_("%B: warning: previous common is here\n"), obfd); | |
1022 | } | |
1023 | } | |
1024 | ||
b34976b6 | 1025 | return TRUE; |
252b5132 RH |
1026 | } |
1027 | ||
1028 | /* This is called when BFD has discovered a set element. H is the | |
1029 | entry in the linker hash table for the set. SECTION and VALUE | |
1030 | represent a value which should be added to the set. */ | |
1031 | ||
b34976b6 | 1032 | static bfd_boolean |
252b5132 | 1033 | add_to_set (info, h, reloc, abfd, section, value) |
87f2a346 | 1034 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
1035 | struct bfd_link_hash_entry *h; |
1036 | bfd_reloc_code_real_type reloc; | |
1037 | bfd *abfd; | |
1038 | asection *section; | |
1039 | bfd_vma value; | |
1040 | { | |
1041 | if (config.warn_constructors) | |
1042 | einfo (_("%P: warning: global constructor %s used\n"), | |
1043 | h->root.string); | |
1044 | ||
1045 | if (! config.build_constructors) | |
b34976b6 | 1046 | return TRUE; |
252b5132 RH |
1047 | |
1048 | ldctor_add_set_entry (h, reloc, (const char *) NULL, section, value); | |
1049 | ||
1050 | if (h->type == bfd_link_hash_new) | |
1051 | { | |
1052 | h->type = bfd_link_hash_undefined; | |
1053 | h->u.undef.abfd = abfd; | |
1054 | /* We don't call bfd_link_add_undef to add this to the list of | |
1055 | undefined symbols because we are going to define it | |
1056 | ourselves. */ | |
1057 | } | |
1058 | ||
b34976b6 | 1059 | return TRUE; |
252b5132 RH |
1060 | } |
1061 | ||
1062 | /* This is called when BFD has discovered a constructor. This is only | |
1063 | called for some object file formats--those which do not handle | |
1064 | constructors in some more clever fashion. This is similar to | |
1065 | adding an element to a set, but less general. */ | |
1066 | ||
b34976b6 | 1067 | static bfd_boolean |
252b5132 RH |
1068 | constructor_callback (info, constructor, name, abfd, section, value) |
1069 | struct bfd_link_info *info; | |
b34976b6 | 1070 | bfd_boolean constructor; |
252b5132 RH |
1071 | const char *name; |
1072 | bfd *abfd; | |
1073 | asection *section; | |
1074 | bfd_vma value; | |
1075 | { | |
1076 | char *s; | |
1077 | struct bfd_link_hash_entry *h; | |
1078 | char set_name[1 + sizeof "__CTOR_LIST__"]; | |
1079 | ||
1080 | if (config.warn_constructors) | |
1081 | einfo (_("%P: warning: global constructor %s used\n"), name); | |
1082 | ||
1083 | if (! config.build_constructors) | |
b34976b6 | 1084 | return TRUE; |
252b5132 RH |
1085 | |
1086 | /* Ensure that BFD_RELOC_CTOR exists now, so that we can give a | |
1087 | useful error message. */ | |
1088 | if (bfd_reloc_type_lookup (output_bfd, BFD_RELOC_CTOR) == NULL | |
1089 | && (link_info.relocateable | |
1090 | || bfd_reloc_type_lookup (abfd, BFD_RELOC_CTOR) == NULL)) | |
1091 | einfo (_("%P%F: BFD backend error: BFD_RELOC_CTOR unsupported\n")); | |
1092 | ||
1093 | s = set_name; | |
1094 | if (bfd_get_symbol_leading_char (abfd) != '\0') | |
1095 | *s++ = bfd_get_symbol_leading_char (abfd); | |
1096 | if (constructor) | |
1097 | strcpy (s, "__CTOR_LIST__"); | |
1098 | else | |
1099 | strcpy (s, "__DTOR_LIST__"); | |
1100 | ||
b34976b6 | 1101 | h = bfd_link_hash_lookup (info->hash, set_name, TRUE, TRUE, TRUE); |
252b5132 RH |
1102 | if (h == (struct bfd_link_hash_entry *) NULL) |
1103 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); | |
1104 | if (h->type == bfd_link_hash_new) | |
1105 | { | |
1106 | h->type = bfd_link_hash_undefined; | |
1107 | h->u.undef.abfd = abfd; | |
1108 | /* We don't call bfd_link_add_undef to add this to the list of | |
1109 | undefined symbols because we are going to define it | |
1110 | ourselves. */ | |
1111 | } | |
1112 | ||
1113 | ldctor_add_set_entry (h, BFD_RELOC_CTOR, name, section, value); | |
b34976b6 | 1114 | return TRUE; |
252b5132 RH |
1115 | } |
1116 | ||
1117 | /* A structure used by warning_callback to pass information through | |
1118 | bfd_map_over_sections. */ | |
1119 | ||
89cdebba | 1120 | struct warning_callback_info { |
b34976b6 | 1121 | bfd_boolean found; |
252b5132 RH |
1122 | const char *warning; |
1123 | const char *symbol; | |
1124 | asymbol **asymbols; | |
1125 | }; | |
1126 | ||
1127 | /* This is called when there is a reference to a warning symbol. */ | |
1128 | ||
b34976b6 | 1129 | static bfd_boolean |
252b5132 | 1130 | warning_callback (info, warning, symbol, abfd, section, address) |
87f2a346 | 1131 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
1132 | const char *warning; |
1133 | const char *symbol; | |
1134 | bfd *abfd; | |
1135 | asection *section; | |
1136 | bfd_vma address; | |
1137 | { | |
1138 | /* This is a hack to support warn_multiple_gp. FIXME: This should | |
1139 | have a cleaner interface, but what? */ | |
1140 | if (! config.warn_multiple_gp | |
1141 | && strcmp (warning, "using multiple gp values") == 0) | |
b34976b6 | 1142 | return TRUE; |
252b5132 RH |
1143 | |
1144 | if (section != NULL) | |
1145 | einfo ("%C: %s\n", abfd, section, address, warning); | |
1146 | else if (abfd == NULL) | |
1147 | einfo ("%P: %s\n", warning); | |
1148 | else if (symbol == NULL) | |
1149 | einfo ("%B: %s\n", abfd, warning); | |
1150 | else | |
1151 | { | |
1152 | lang_input_statement_type *entry; | |
1153 | asymbol **asymbols; | |
1154 | struct warning_callback_info info; | |
1155 | ||
1156 | /* Look through the relocs to see if we can find a plausible | |
1157 | address. */ | |
1158 | ||
1159 | entry = (lang_input_statement_type *) abfd->usrdata; | |
1160 | if (entry != NULL && entry->asymbols != NULL) | |
1161 | asymbols = entry->asymbols; | |
1162 | else | |
1163 | { | |
1164 | long symsize; | |
1165 | long symbol_count; | |
1166 | ||
1167 | symsize = bfd_get_symtab_upper_bound (abfd); | |
1168 | if (symsize < 0) | |
1169 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
1170 | asymbols = (asymbol **) xmalloc (symsize); | |
1171 | symbol_count = bfd_canonicalize_symtab (abfd, asymbols); | |
1172 | if (symbol_count < 0) | |
1173 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
1174 | if (entry != NULL) | |
1175 | { | |
1176 | entry->asymbols = asymbols; | |
1177 | entry->symbol_count = symbol_count; | |
1178 | } | |
1179 | } | |
1180 | ||
b34976b6 | 1181 | info.found = FALSE; |
252b5132 RH |
1182 | info.warning = warning; |
1183 | info.symbol = symbol; | |
1184 | info.asymbols = asymbols; | |
1185 | bfd_map_over_sections (abfd, warning_find_reloc, (PTR) &info); | |
1186 | ||
1187 | if (! info.found) | |
1188 | einfo ("%B: %s\n", abfd, warning); | |
1189 | ||
1190 | if (entry == NULL) | |
1191 | free (asymbols); | |
1192 | } | |
1193 | ||
b34976b6 | 1194 | return TRUE; |
252b5132 RH |
1195 | } |
1196 | ||
1197 | /* This is called by warning_callback for each section. It checks the | |
1198 | relocs of the section to see if it can find a reference to the | |
1199 | symbol which triggered the warning. If it can, it uses the reloc | |
1200 | to give an error message with a file and line number. */ | |
1201 | ||
1202 | static void | |
1203 | warning_find_reloc (abfd, sec, iarg) | |
1204 | bfd *abfd; | |
1205 | asection *sec; | |
1206 | PTR iarg; | |
1207 | { | |
1208 | struct warning_callback_info *info = (struct warning_callback_info *) iarg; | |
1209 | long relsize; | |
1210 | arelent **relpp; | |
1211 | long relcount; | |
1212 | arelent **p, **pend; | |
1213 | ||
1214 | if (info->found) | |
1215 | return; | |
1216 | ||
1217 | relsize = bfd_get_reloc_upper_bound (abfd, sec); | |
1218 | if (relsize < 0) | |
1219 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1220 | if (relsize == 0) | |
1221 | return; | |
1222 | ||
1223 | relpp = (arelent **) xmalloc (relsize); | |
1224 | relcount = bfd_canonicalize_reloc (abfd, sec, relpp, info->asymbols); | |
1225 | if (relcount < 0) | |
1226 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1227 | ||
1228 | p = relpp; | |
1229 | pend = p + relcount; | |
1230 | for (; p < pend && *p != NULL; p++) | |
1231 | { | |
1232 | arelent *q = *p; | |
1233 | ||
1234 | if (q->sym_ptr_ptr != NULL | |
1235 | && *q->sym_ptr_ptr != NULL | |
1236 | && strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), info->symbol) == 0) | |
1237 | { | |
1238 | /* We found a reloc for the symbol we are looking for. */ | |
1239 | einfo ("%C: %s\n", abfd, sec, q->address, info->warning); | |
b34976b6 | 1240 | info->found = TRUE; |
252b5132 RH |
1241 | break; |
1242 | } | |
1243 | } | |
1244 | ||
1245 | free (relpp); | |
1246 | } | |
1247 | ||
1248 | /* This is called when an undefined symbol is found. */ | |
1249 | ||
b34976b6 | 1250 | static bfd_boolean |
b6f29aaa | 1251 | undefined_symbol (info, name, abfd, section, address, fatal) |
87f2a346 | 1252 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
1253 | const char *name; |
1254 | bfd *abfd; | |
1255 | asection *section; | |
1256 | bfd_vma address; | |
b34976b6 | 1257 | bfd_boolean fatal ATTRIBUTE_UNUSED; |
252b5132 RH |
1258 | { |
1259 | static char *error_name; | |
1260 | static unsigned int error_count; | |
1261 | ||
1262 | #define MAX_ERRORS_IN_A_ROW 5 | |
1263 | ||
1264 | if (config.warn_once) | |
1265 | { | |
1266 | static struct bfd_hash_table *hash; | |
1267 | ||
1268 | /* Only warn once about a particular undefined symbol. */ | |
1269 | ||
1270 | if (hash == NULL) | |
1271 | { | |
1272 | hash = ((struct bfd_hash_table *) | |
1273 | xmalloc (sizeof (struct bfd_hash_table))); | |
1274 | if (! bfd_hash_table_init (hash, bfd_hash_newfunc)) | |
1275 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); | |
1276 | } | |
1277 | ||
b34976b6 AM |
1278 | if (bfd_hash_lookup (hash, name, FALSE, FALSE) != NULL) |
1279 | return TRUE; | |
252b5132 | 1280 | |
b34976b6 | 1281 | if (bfd_hash_lookup (hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
1282 | einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); |
1283 | } | |
1284 | ||
1285 | /* We never print more than a reasonable number of errors in a row | |
1286 | for a single symbol. */ | |
1287 | if (error_name != (char *) NULL | |
1288 | && strcmp (name, error_name) == 0) | |
1289 | ++error_count; | |
1290 | else | |
1291 | { | |
1292 | error_count = 0; | |
1293 | if (error_name != (char *) NULL) | |
1294 | free (error_name); | |
d1b2b2dc | 1295 | error_name = xstrdup (name); |
252b5132 RH |
1296 | } |
1297 | ||
1298 | if (section != NULL) | |
1299 | { | |
1300 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa L |
1301 | { |
1302 | einfo (_("%C: undefined reference to `%T'\n"), | |
1303 | abfd, section, address, name); | |
1304 | if (fatal) | |
1305 | einfo ("%X"); | |
1306 | } | |
252b5132 RH |
1307 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
1308 | einfo (_("%D: more undefined references to `%T' follow\n"), | |
1309 | abfd, section, address, name); | |
1310 | } | |
1311 | else | |
1312 | { | |
1313 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa L |
1314 | { |
1315 | einfo (_("%B: undefined reference to `%T'\n"), | |
1316 | abfd, name); | |
1317 | if (fatal) | |
1318 | einfo ("%X"); | |
1319 | } | |
252b5132 RH |
1320 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
1321 | einfo (_("%B: more undefined references to `%T' follow\n"), | |
1322 | abfd, name); | |
1323 | } | |
1324 | ||
b34976b6 | 1325 | return TRUE; |
252b5132 RH |
1326 | } |
1327 | ||
1328 | /* This is called when a reloc overflows. */ | |
1329 | ||
b34976b6 | 1330 | static bfd_boolean |
252b5132 | 1331 | reloc_overflow (info, name, reloc_name, addend, abfd, section, address) |
87f2a346 | 1332 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
1333 | const char *name; |
1334 | const char *reloc_name; | |
1335 | bfd_vma addend; | |
1336 | bfd *abfd; | |
1337 | asection *section; | |
1338 | bfd_vma address; | |
1339 | { | |
1340 | if (abfd == (bfd *) NULL) | |
1341 | einfo (_("%P%X: generated")); | |
1342 | else | |
1343 | einfo ("%X%C:", abfd, section, address); | |
1344 | einfo (_(" relocation truncated to fit: %s %T"), reloc_name, name); | |
1345 | if (addend != 0) | |
1346 | einfo ("+%v", addend); | |
1347 | einfo ("\n"); | |
b34976b6 | 1348 | return TRUE; |
252b5132 RH |
1349 | } |
1350 | ||
1351 | /* This is called when a dangerous relocation is made. */ | |
1352 | ||
b34976b6 | 1353 | static bfd_boolean |
252b5132 | 1354 | reloc_dangerous (info, message, abfd, section, address) |
87f2a346 | 1355 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
1356 | const char *message; |
1357 | bfd *abfd; | |
1358 | asection *section; | |
1359 | bfd_vma address; | |
1360 | { | |
1361 | if (abfd == (bfd *) NULL) | |
1362 | einfo (_("%P%X: generated")); | |
1363 | else | |
1364 | einfo ("%X%C:", abfd, section, address); | |
1365 | einfo (_("dangerous relocation: %s\n"), message); | |
b34976b6 | 1366 | return TRUE; |
252b5132 RH |
1367 | } |
1368 | ||
1369 | /* This is called when a reloc is being generated attached to a symbol | |
1370 | that is not being output. */ | |
1371 | ||
b34976b6 | 1372 | static bfd_boolean |
252b5132 | 1373 | unattached_reloc (info, name, abfd, section, address) |
87f2a346 | 1374 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
252b5132 RH |
1375 | const char *name; |
1376 | bfd *abfd; | |
1377 | asection *section; | |
1378 | bfd_vma address; | |
1379 | { | |
1380 | if (abfd == (bfd *) NULL) | |
1381 | einfo (_("%P%X: generated")); | |
1382 | else | |
1383 | einfo ("%X%C:", abfd, section, address); | |
1384 | einfo (_(" reloc refers to symbol `%T' which is not being output\n"), name); | |
b34976b6 | 1385 | return TRUE; |
252b5132 RH |
1386 | } |
1387 | ||
1388 | /* This is called if link_info.notice_all is set, or when a symbol in | |
1389 | link_info.notice_hash is found. Symbols are put in notice_hash | |
1390 | using the -y option. */ | |
1391 | ||
b34976b6 | 1392 | static bfd_boolean |
252b5132 RH |
1393 | notice (info, name, abfd, section, value) |
1394 | struct bfd_link_info *info; | |
1395 | const char *name; | |
1396 | bfd *abfd; | |
1397 | asection *section; | |
1398 | bfd_vma value; | |
1399 | { | |
1400 | if (! info->notice_all | |
1401 | || (info->notice_hash != NULL | |
b34976b6 | 1402 | && bfd_hash_lookup (info->notice_hash, name, FALSE, FALSE) != NULL)) |
252b5132 RH |
1403 | { |
1404 | if (bfd_is_und_section (section)) | |
1405 | einfo ("%B: reference to %s\n", abfd, name); | |
1406 | else | |
1407 | einfo ("%B: definition of %s\n", abfd, name); | |
1408 | } | |
1409 | ||
1410 | if (command_line.cref || nocrossref_list != NULL) | |
1411 | add_cref (name, abfd, section, value); | |
1412 | ||
b34976b6 | 1413 | return TRUE; |
252b5132 | 1414 | } |