Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Main program of GNU linker. |
4e5bae56 | 2 | Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
4a43e768 | 3 | 2002, 2003, 2004 |
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 | ||
0125cdf2 | 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 | |
1579bae1 | 54 | extern void *sbrk (); |
252b5132 RH |
55 | #endif |
56 | #endif | |
57 | ||
9c8ebd6a DJ |
58 | #ifndef TARGET_SYSTEM_ROOT |
59 | #define TARGET_SYSTEM_ROOT "" | |
60 | #endif | |
61 | ||
252b5132 RH |
62 | /* EXPORTS */ |
63 | ||
64 | char *default_target; | |
65 | const char *output_filename = "a.out"; | |
66 | ||
67 | /* Name this program was invoked by. */ | |
68 | char *program_name; | |
69 | ||
9c8ebd6a DJ |
70 | /* The prefix for system library directories. */ |
71 | char *ld_sysroot; | |
72 | ||
3fe38064 NC |
73 | /* The canonical representation of ld_sysroot. */ |
74 | char * ld_canon_sysroot; | |
75 | int ld_canon_sysroot_len; | |
76 | ||
6d5e62f8 | 77 | /* The file that we're creating. */ |
252b5132 RH |
78 | bfd *output_bfd = 0; |
79 | ||
80 | /* Set by -G argument, for MIPS ECOFF target. */ | |
81 | int g_switch_value = 8; | |
82 | ||
83 | /* Nonzero means print names of input files as processed. */ | |
b34976b6 | 84 | bfd_boolean trace_files; |
252b5132 RH |
85 | |
86 | /* Nonzero means same, but note open failures, too. */ | |
b34976b6 | 87 | bfd_boolean trace_file_tries; |
252b5132 RH |
88 | |
89 | /* Nonzero means version number was printed, so exit successfully | |
90 | instead of complaining if no input files are given. */ | |
b34976b6 | 91 | bfd_boolean version_printed; |
252b5132 RH |
92 | |
93 | /* Nonzero means link in every member of an archive. */ | |
b34976b6 | 94 | bfd_boolean whole_archive; |
252b5132 | 95 | |
4a43e768 AM |
96 | /* Nonzero means create DT_NEEDED entries only if a dynamic library |
97 | actually satisfies some reference in a regular object. */ | |
98 | bfd_boolean as_needed; | |
99 | ||
b34976b6 AM |
100 | /* TRUE if we should demangle symbol names. */ |
101 | bfd_boolean demangling; | |
252b5132 RH |
102 | |
103 | args_type command_line; | |
104 | ||
105 | ld_config_type config; | |
106 | ||
0125cdf2 | 107 | static char *get_emulation |
1579bae1 | 108 | (int, char **); |
0125cdf2 | 109 | static void set_scripts_dir |
1579bae1 | 110 | (void); |
0125cdf2 | 111 | static bfd_boolean add_archive_element |
1579bae1 | 112 | (struct bfd_link_info *, bfd *, const char *); |
0125cdf2 | 113 | static bfd_boolean multiple_definition |
1579bae1 AM |
114 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma, |
115 | bfd *, asection *, bfd_vma); | |
0125cdf2 | 116 | static bfd_boolean multiple_common |
1579bae1 AM |
117 | (struct bfd_link_info *, const char *, bfd *, enum bfd_link_hash_type, |
118 | bfd_vma, bfd *, enum bfd_link_hash_type, bfd_vma); | |
0125cdf2 | 119 | static bfd_boolean add_to_set |
1579bae1 AM |
120 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
121 | bfd_reloc_code_real_type, bfd *, asection *, bfd_vma); | |
0125cdf2 | 122 | static bfd_boolean constructor_callback |
1579bae1 AM |
123 | (struct bfd_link_info *, bfd_boolean, const char *, bfd *, |
124 | asection *, bfd_vma); | |
0125cdf2 | 125 | static bfd_boolean warning_callback |
1579bae1 AM |
126 | (struct bfd_link_info *, const char *, const char *, bfd *, |
127 | asection *, bfd_vma); | |
0125cdf2 | 128 | static void warning_find_reloc |
1579bae1 | 129 | (bfd *, asection *, void *); |
0125cdf2 | 130 | static bfd_boolean undefined_symbol |
1579bae1 AM |
131 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma, |
132 | bfd_boolean); | |
0125cdf2 | 133 | static bfd_boolean reloc_overflow |
1579bae1 AM |
134 | (struct bfd_link_info *, const char *, const char *, bfd_vma, |
135 | bfd *, asection *, bfd_vma); | |
0125cdf2 | 136 | static bfd_boolean reloc_dangerous |
1579bae1 | 137 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
0125cdf2 | 138 | static bfd_boolean unattached_reloc |
1579bae1 | 139 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
0125cdf2 | 140 | static bfd_boolean notice |
1579bae1 | 141 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
0125cdf2 NC |
142 | |
143 | static struct bfd_link_callbacks link_callbacks = | |
144 | { | |
252b5132 RH |
145 | add_archive_element, |
146 | multiple_definition, | |
147 | multiple_common, | |
148 | add_to_set, | |
149 | constructor_callback, | |
150 | warning_callback, | |
151 | undefined_symbol, | |
152 | reloc_overflow, | |
153 | reloc_dangerous, | |
154 | unattached_reloc, | |
0f0569c4 L |
155 | notice, |
156 | error_handler | |
252b5132 RH |
157 | }; |
158 | ||
159 | struct bfd_link_info link_info; | |
160 | \f | |
161 | static void | |
1579bae1 | 162 | remove_output (void) |
252b5132 | 163 | { |
6d5e62f8 | 164 | if (output_filename) |
252b5132 | 165 | { |
c92c35e7 AC |
166 | if (output_bfd) |
167 | bfd_cache_close (output_bfd); | |
252b5132 RH |
168 | if (delete_output_file_on_failure) |
169 | unlink (output_filename); | |
170 | } | |
171 | } | |
172 | ||
173 | int | |
1579bae1 | 174 | main (int argc, char **argv) |
252b5132 RH |
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); | |
0125cdf2 | 202 | |
9c8ebd6a DJ |
203 | if (ld_sysroot) |
204 | { | |
205 | struct stat s; | |
206 | int res = stat (ld_sysroot, &s) == 0 && S_ISDIR (s.st_mode); | |
0125cdf2 | 207 | |
9c8ebd6a DJ |
208 | if (!res) |
209 | { | |
210 | free (ld_sysroot); | |
0125cdf2 | 211 | ld_sysroot = NULL; |
9c8ebd6a DJ |
212 | } |
213 | } | |
0125cdf2 NC |
214 | |
215 | if (! ld_sysroot) | |
216 | { | |
217 | ld_sysroot = make_relative_prefix (program_name, TOOLBINDIR, | |
218 | TARGET_SYSTEM_ROOT); | |
219 | ||
220 | if (ld_sysroot) | |
221 | { | |
222 | struct stat s; | |
223 | int res = stat (ld_sysroot, &s) == 0 && S_ISDIR (s.st_mode); | |
224 | ||
225 | if (!res) | |
226 | { | |
227 | free (ld_sysroot); | |
228 | ld_sysroot = NULL; | |
229 | } | |
230 | } | |
231 | } | |
232 | ||
233 | if (! ld_sysroot) | |
9c8ebd6a | 234 | #endif |
0125cdf2 | 235 | ld_sysroot = TARGET_SYSTEM_ROOT; |
9c8ebd6a | 236 | |
3fe38064 NC |
237 | if (ld_sysroot && *ld_sysroot) |
238 | ld_canon_sysroot = lrealpath (ld_sysroot); | |
239 | ||
240 | if (ld_canon_sysroot) | |
241 | ld_canon_sysroot_len = strlen (ld_canon_sysroot); | |
242 | else | |
243 | ld_canon_sysroot_len = -1; | |
244 | ||
252b5132 RH |
245 | /* Set the default BFD target based on the configured target. Doing |
246 | this permits the linker to be configured for a particular target, | |
247 | and linked against a shared BFD library which was configured for | |
248 | a different target. The macro TARGET is defined by Makefile. */ | |
249 | if (! bfd_set_default_target (TARGET)) | |
250 | { | |
251 | einfo (_("%X%P: can't set BFD default target to `%s': %E\n"), TARGET); | |
252 | xexit (1); | |
253 | } | |
254 | ||
b47c4208 AM |
255 | #if YYDEBUG |
256 | { | |
257 | extern int yydebug; | |
258 | yydebug = 1; | |
259 | } | |
260 | #endif | |
261 | ||
252b5132 | 262 | /* Initialize the data about options. */ |
b34976b6 AM |
263 | trace_files = trace_file_tries = version_printed = FALSE; |
264 | whole_archive = FALSE; | |
265 | config.build_constructors = TRUE; | |
266 | config.dynamic_link = FALSE; | |
267 | config.has_shared = FALSE; | |
a854a4a7 AM |
268 | config.split_by_reloc = (unsigned) -1; |
269 | config.split_by_file = (bfd_size_type) -1; | |
b34976b6 AM |
270 | command_line.force_common_definition = FALSE; |
271 | command_line.inhibit_common_definition = FALSE; | |
252b5132 RH |
272 | command_line.interpreter = NULL; |
273 | command_line.rpath = NULL; | |
b34976b6 AM |
274 | command_line.warn_mismatch = TRUE; |
275 | command_line.check_section_addresses = TRUE; | |
312b768e | 276 | command_line.accept_unknown_input_arch = FALSE; |
35835446 | 277 | command_line.reduce_memory_overheads = FALSE; |
252b5132 RH |
278 | |
279 | /* We initialize DEMANGLING based on the environment variable | |
280 | COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the | |
281 | output of the linker, unless COLLECT_NO_DEMANGLE is set in the | |
282 | environment. Acting the same way here lets us provide the same | |
283 | interface by default. */ | |
284 | demangling = getenv ("COLLECT_NO_DEMANGLE") == NULL; | |
285 | ||
1049f94e | 286 | link_info.relocatable = FALSE; |
b34976b6 | 287 | link_info.emitrelocations = FALSE; |
b5067602 | 288 | link_info.task_link = FALSE; |
b34976b6 | 289 | link_info.shared = FALSE; |
36af4a4e JJ |
290 | link_info.pie = FALSE; |
291 | link_info.executable = FALSE; | |
b34976b6 AM |
292 | link_info.symbolic = FALSE; |
293 | link_info.export_dynamic = FALSE; | |
294 | link_info.static_link = FALSE; | |
295 | link_info.traditional_format = FALSE; | |
296 | link_info.optimize = FALSE; | |
560e09e9 NC |
297 | link_info.unresolved_syms_in_objects = RM_NOT_YET_SET; |
298 | link_info.unresolved_syms_in_shared_libs = RM_NOT_YET_SET; | |
b34976b6 AM |
299 | link_info.allow_multiple_definition = FALSE; |
300 | link_info.allow_undefined_version = TRUE; | |
b5067602 AM |
301 | link_info.keep_memory = TRUE; |
302 | link_info.notice_all = FALSE; | |
303 | link_info.nocopyreloc = FALSE; | |
304 | link_info.new_dtags = FALSE; | |
305 | link_info.combreloc = TRUE; | |
306 | link_info.eh_frame_hdr = FALSE; | |
8c37241b | 307 | link_info.relro = FALSE; |
d5cd3933 | 308 | link_info.strip_discarded = TRUE; |
252b5132 | 309 | link_info.strip = strip_none; |
f5fa8ca2 | 310 | link_info.discard = discard_sec_merge; |
b5067602 AM |
311 | link_info.common_skip_ar_aymbols = bfd_link_common_skip_none; |
312 | link_info.callbacks = &link_callbacks; | |
252b5132 RH |
313 | link_info.hash = NULL; |
314 | link_info.keep_hash = NULL; | |
252b5132 RH |
315 | link_info.notice_hash = NULL; |
316 | link_info.wrap_hash = NULL; | |
b5067602 AM |
317 | link_info.input_bfds = NULL; |
318 | link_info.create_object_symbols_section = NULL; | |
319 | link_info.gc_sym_list = NULL; | |
320 | link_info.base_file = NULL; | |
3dbf70a2 MM |
321 | /* SVR4 linkers seem to set DT_INIT and DT_FINI based on magic _init |
322 | and _fini symbols. We are compatible. */ | |
323 | link_info.init_function = "_init"; | |
324 | link_info.fini_function = "_fini"; | |
e0076ab3 | 325 | link_info.pei386_auto_import = -1; |
b34976b6 | 326 | link_info.pei386_runtime_pseudo_reloc = FALSE; |
db6751f2 | 327 | link_info.spare_dynamic_tags = 5; |
1579bae1 AM |
328 | link_info.flags = 0; |
329 | link_info.flags_1 = 0; | |
d9c458fc | 330 | link_info.need_relax_finalize = FALSE; |
3dbf70a2 | 331 | |
252b5132 RH |
332 | ldfile_add_arch (""); |
333 | ||
b34976b6 AM |
334 | config.make_executable = TRUE; |
335 | force_make_executable = FALSE; | |
336 | config.magic_demand_paged = TRUE; | |
337 | config.text_read_only = TRUE; | |
252b5132 RH |
338 | |
339 | emulation = get_emulation (argc, argv); | |
340 | ldemul_choose_mode (emulation); | |
742aeb63 | 341 | default_target = ldemul_choose_target (argc, argv); |
252b5132 RH |
342 | lang_init (); |
343 | ldemul_before_parse (); | |
b34976b6 | 344 | lang_has_input_file = FALSE; |
252b5132 RH |
345 | parse_args (argc, argv); |
346 | ||
347 | ldemul_set_symbols (); | |
348 | ||
1049f94e | 349 | if (link_info.relocatable) |
252b5132 RH |
350 | { |
351 | if (command_line.gc_sections) | |
352 | einfo ("%P%F: --gc-sections and -r may not be used together\n"); | |
252b5132 RH |
353 | else if (command_line.relax) |
354 | einfo (_("%P%F: --relax and -r may not be used together\n")); | |
355 | if (link_info.shared) | |
356 | einfo (_("%P%F: -r and -shared may not be used together\n")); | |
357 | } | |
358 | ||
7333607e JJ |
359 | if (! link_info.shared) |
360 | { | |
361 | if (command_line.filter_shlib) | |
e97cb84f | 362 | einfo (_("%P%F: -F may not be used without -shared\n")); |
7333607e | 363 | if (command_line.auxiliary_filters) |
e97cb84f | 364 | einfo (_("%P%F: -f may not be used without -shared\n")); |
7333607e JJ |
365 | } |
366 | ||
36af4a4e JJ |
367 | if (! link_info.shared || link_info.pie) |
368 | link_info.executable = TRUE; | |
369 | ||
252b5132 RH |
370 | /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I |
371 | don't see how else this can be handled, since in this case we | |
372 | must preserve all externally visible symbols. */ | |
1049f94e | 373 | if (link_info.relocatable && link_info.strip == strip_all) |
252b5132 RH |
374 | { |
375 | link_info.strip = strip_debugger; | |
f5fa8ca2 | 376 | if (link_info.discard == discard_sec_merge) |
252b5132 RH |
377 | link_info.discard = discard_all; |
378 | } | |
379 | ||
380 | /* This essentially adds another -L directory so this must be done after | |
381 | the -L's in argv have been processed. */ | |
382 | set_scripts_dir (); | |
383 | ||
b9a8de1e NC |
384 | /* If we have not already opened and parsed a linker script |
385 | read the emulation's appropriate default script. */ | |
b90e1c6f | 386 | if (saved_script_handle == NULL) |
252b5132 | 387 | { |
252b5132 | 388 | int isfile; |
b7a26f91 | 389 | char *s = ldemul_get_script (&isfile); |
252b5132 RH |
390 | |
391 | if (isfile) | |
392 | ldfile_open_command_file (s); | |
393 | else | |
b7a26f91 | 394 | { |
252b5132 RH |
395 | lex_string = s; |
396 | lex_redirect (s); | |
397 | } | |
398 | parser_input = input_script; | |
399 | yyparse (); | |
400 | lex_string = NULL; | |
401 | } | |
402 | ||
b9a8de1e NC |
403 | if (trace_file_tries) |
404 | { | |
9cb61eab AM |
405 | if (saved_script_handle) |
406 | info_msg (_("using external linker script:")); | |
407 | else | |
408 | info_msg (_("using internal linker script:")); | |
409 | info_msg ("\n==================================================\n"); | |
b9a8de1e NC |
410 | |
411 | if (saved_script_handle) | |
412 | { | |
74699268 | 413 | static const int ld_bufsz = 8193; |
b9a8de1e | 414 | size_t n; |
74699268 | 415 | char *buf = xmalloc (ld_bufsz); |
b9a8de1e NC |
416 | |
417 | rewind (saved_script_handle); | |
74699268 | 418 | while ((n = fread (buf, 1, ld_bufsz - 1, saved_script_handle)) > 0) |
b9a8de1e | 419 | { |
b7a26f91 | 420 | buf[n] = 0; |
b9a8de1e NC |
421 | info_msg (buf); |
422 | } | |
423 | rewind (saved_script_handle); | |
424 | free (buf); | |
425 | } | |
426 | else | |
427 | { | |
428 | int isfile; | |
429 | ||
b7a26f91 | 430 | info_msg (ldemul_get_script (&isfile)); |
b9a8de1e | 431 | } |
b7a26f91 | 432 | |
b9a8de1e NC |
433 | info_msg ("\n==================================================\n"); |
434 | } | |
435 | ||
252b5132 RH |
436 | lang_final (); |
437 | ||
b34976b6 | 438 | if (!lang_has_input_file) |
252b5132 RH |
439 | { |
440 | if (version_printed) | |
441 | xexit (0); | |
442 | einfo (_("%P%F: no input files\n")); | |
443 | } | |
444 | ||
445 | if (trace_files) | |
0125cdf2 | 446 | info_msg (_("%P: mode %s\n"), emulation); |
252b5132 RH |
447 | |
448 | ldemul_after_parse (); | |
449 | ||
252b5132 RH |
450 | if (config.map_filename) |
451 | { | |
452 | if (strcmp (config.map_filename, "-") == 0) | |
453 | { | |
454 | config.map_file = stdout; | |
455 | } | |
456 | else | |
457 | { | |
458 | config.map_file = fopen (config.map_filename, FOPEN_WT); | |
459 | if (config.map_file == (FILE *) NULL) | |
460 | { | |
461 | bfd_set_error (bfd_error_system_call); | |
462 | einfo (_("%P%F: cannot open map file %s: %E\n"), | |
463 | config.map_filename); | |
464 | } | |
465 | } | |
466 | } | |
467 | ||
252b5132 RH |
468 | lang_process (); |
469 | ||
470 | /* Print error messages for any missing symbols, for any warning | |
6d5e62f8 | 471 | symbols, and possibly multiple definitions. */ |
1049f94e | 472 | if (link_info.relocatable) |
252b5132 RH |
473 | output_bfd->flags &= ~EXEC_P; |
474 | else | |
475 | output_bfd->flags |= EXEC_P; | |
476 | ||
477 | ldwrite (); | |
478 | ||
479 | if (config.map_file != NULL) | |
480 | lang_map (); | |
481 | if (command_line.cref) | |
482 | output_cref (config.map_file != NULL ? config.map_file : stdout); | |
483 | if (nocrossref_list != NULL) | |
484 | check_nocrossrefs (); | |
485 | ||
1049f94e | 486 | /* Even if we're producing relocatable output, some non-fatal errors should |
252b5132 | 487 | be reported in the exit status. (What non-fatal errors, if any, do we |
1049f94e | 488 | want to ignore for relocatable output?) */ |
b34976b6 | 489 | if (!config.make_executable && !force_make_executable) |
252b5132 | 490 | { |
b34976b6 | 491 | if (trace_files) |
0125cdf2 NC |
492 | einfo (_("%P: link errors found, deleting executable `%s'\n"), |
493 | output_filename); | |
252b5132 RH |
494 | |
495 | /* The file will be removed by remove_output. */ | |
252b5132 RH |
496 | xexit (1); |
497 | } | |
498 | else | |
499 | { | |
500 | if (! bfd_close (output_bfd)) | |
501 | einfo (_("%F%B: final close failed: %E\n"), output_bfd); | |
502 | ||
503 | /* If the --force-exe-suffix is enabled, and we're making an | |
6d5e62f8 KH |
504 | executable file and it doesn't end in .exe, copy it to one |
505 | which does. */ | |
1049f94e | 506 | if (! link_info.relocatable && command_line.force_exe_suffix) |
252b5132 RH |
507 | { |
508 | int len = strlen (output_filename); | |
0125cdf2 | 509 | |
6d5e62f8 | 510 | if (len < 4 |
252b5132 RH |
511 | || (strcasecmp (output_filename + len - 4, ".exe") != 0 |
512 | && strcasecmp (output_filename + len - 4, ".dll") != 0)) | |
513 | { | |
514 | FILE *src; | |
515 | FILE *dst; | |
516 | const int bsize = 4096; | |
517 | char *buf = xmalloc (bsize); | |
518 | int l; | |
519 | char *dst_name = xmalloc (len + 5); | |
0125cdf2 | 520 | |
252b5132 RH |
521 | strcpy (dst_name, output_filename); |
522 | strcat (dst_name, ".exe"); | |
523 | src = fopen (output_filename, FOPEN_RB); | |
524 | dst = fopen (dst_name, FOPEN_WB); | |
525 | ||
526 | if (!src) | |
1579bae1 AM |
527 | einfo (_("%X%P: unable to open for source of copy `%s'\n"), |
528 | output_filename); | |
252b5132 | 529 | if (!dst) |
1579bae1 AM |
530 | einfo (_("%X%P: unable to open for destination of copy `%s'\n"), |
531 | dst_name); | |
252b5132 RH |
532 | while ((l = fread (buf, 1, bsize, src)) > 0) |
533 | { | |
534 | int done = fwrite (buf, 1, l, dst); | |
0125cdf2 | 535 | |
252b5132 | 536 | if (done != l) |
0125cdf2 | 537 | einfo (_("%P: Error writing file `%s'\n"), dst_name); |
252b5132 | 538 | } |
0125cdf2 | 539 | |
252b5132 RH |
540 | fclose (src); |
541 | if (fclose (dst) == EOF) | |
0125cdf2 | 542 | einfo (_("%P: Error closing file `%s'\n"), dst_name); |
252b5132 RH |
543 | free (dst_name); |
544 | free (buf); | |
545 | } | |
546 | } | |
547 | } | |
548 | ||
549 | END_PROGRESS (program_name); | |
550 | ||
551 | if (config.stats) | |
552 | { | |
553 | #ifdef HAVE_SBRK | |
1579bae1 | 554 | char *lim = sbrk (0); |
252b5132 RH |
555 | #endif |
556 | long run_time = get_run_time () - start_time; | |
557 | ||
558 | fprintf (stderr, _("%s: total time in link: %ld.%06ld\n"), | |
559 | program_name, run_time / 1000000, run_time % 1000000); | |
560 | #ifdef HAVE_SBRK | |
561 | fprintf (stderr, _("%s: data size %ld\n"), program_name, | |
562 | (long) (lim - (char *) &environ)); | |
563 | #endif | |
564 | } | |
565 | ||
566 | /* Prevent remove_output from doing anything, after a successful link. */ | |
567 | output_filename = NULL; | |
568 | ||
569 | xexit (0); | |
570 | return 0; | |
571 | } | |
572 | ||
573 | /* We need to find any explicitly given emulation in order to initialize the | |
574 | state that's needed by the lex&yacc argument parser (parse_args). */ | |
575 | ||
576 | static char * | |
1579bae1 | 577 | get_emulation (int argc, char **argv) |
252b5132 RH |
578 | { |
579 | char *emulation; | |
580 | int i; | |
581 | ||
582 | emulation = getenv (EMULATION_ENVIRON); | |
583 | if (emulation == NULL) | |
584 | emulation = DEFAULT_EMULATION; | |
585 | ||
586 | for (i = 1; i < argc; i++) | |
587 | { | |
588 | if (!strncmp (argv[i], "-m", 2)) | |
589 | { | |
590 | if (argv[i][2] == '\0') | |
591 | { | |
592 | /* -m EMUL */ | |
593 | if (i < argc - 1) | |
594 | { | |
595 | emulation = argv[i + 1]; | |
596 | i++; | |
597 | } | |
598 | else | |
0125cdf2 | 599 | einfo (_("%P%F: missing argument to -m\n")); |
252b5132 RH |
600 | } |
601 | else if (strcmp (argv[i], "-mips1") == 0 | |
602 | || strcmp (argv[i], "-mips2") == 0 | |
603 | || strcmp (argv[i], "-mips3") == 0 | |
d1cf510e | 604 | || strcmp (argv[i], "-mips4") == 0 |
6f33421c CD |
605 | || strcmp (argv[i], "-mips5") == 0 |
606 | || strcmp (argv[i], "-mips32") == 0 | |
607 | || strcmp (argv[i], "-mips32r2") == 0 | |
5f74bc13 CD |
608 | || strcmp (argv[i], "-mips64") == 0 |
609 | || strcmp (argv[i], "-mips64r2") == 0) | |
252b5132 | 610 | { |
31d677f9 | 611 | /* FIXME: The arguments -mips1, -mips2, -mips3, etc. are |
252b5132 RH |
612 | passed to the linker by some MIPS compilers. They |
613 | generally tell the linker to use a slightly different | |
614 | library path. Perhaps someday these should be | |
615 | implemented as emulations; until then, we just ignore | |
616 | the arguments and hope that nobody ever creates | |
617 | emulations named ips1, ips2 or ips3. */ | |
618 | } | |
619 | else if (strcmp (argv[i], "-m486") == 0) | |
620 | { | |
621 | /* FIXME: The argument -m486 is passed to the linker on | |
622 | some Linux systems. Hope that nobody creates an | |
623 | emulation named 486. */ | |
624 | } | |
625 | else | |
626 | { | |
627 | /* -mEMUL */ | |
628 | emulation = &argv[i][2]; | |
629 | } | |
630 | } | |
631 | } | |
632 | ||
633 | return emulation; | |
634 | } | |
635 | ||
636 | /* If directory DIR contains an "ldscripts" subdirectory, | |
b34976b6 AM |
637 | add DIR to the library search path and return TRUE, |
638 | else return FALSE. */ | |
252b5132 | 639 | |
b34976b6 | 640 | static bfd_boolean |
1579bae1 | 641 | check_for_scripts_dir (char *dir) |
252b5132 RH |
642 | { |
643 | size_t dirlen; | |
644 | char *buf; | |
645 | struct stat s; | |
b34976b6 | 646 | bfd_boolean res; |
252b5132 RH |
647 | |
648 | dirlen = strlen (dir); | |
649 | /* sizeof counts the terminating NUL. */ | |
1579bae1 | 650 | buf = xmalloc (dirlen + sizeof ("/ldscripts")); |
252b5132 RH |
651 | sprintf (buf, "%s/ldscripts", dir); |
652 | ||
653 | res = stat (buf, &s) == 0 && S_ISDIR (s.st_mode); | |
654 | free (buf); | |
655 | if (res) | |
b34976b6 | 656 | ldfile_add_library_path (dir, FALSE); |
252b5132 RH |
657 | return res; |
658 | } | |
659 | ||
660 | /* Set the default directory for finding script files. | |
661 | Libraries will be searched for here too, but that's ok. | |
662 | We look for the "ldscripts" directory in: | |
663 | ||
cdc0d45e DJ |
664 | SCRIPTDIR (passed from Makefile) |
665 | (adjusted according to the current location of the binary) | |
252b5132 RH |
666 | SCRIPTDIR (passed from Makefile) |
667 | the dir where this program is (for using it from the build tree) | |
cdc0d45e | 668 | the dir where this program is/../lib |
0125cdf2 | 669 | (for installing the tool suite elsewhere). */ |
252b5132 RH |
670 | |
671 | static void | |
1579bae1 | 672 | set_scripts_dir (void) |
252b5132 RH |
673 | { |
674 | char *end, *dir; | |
675 | size_t dirlen; | |
5ed6aba4 | 676 | bfd_boolean found; |
252b5132 | 677 | |
cdc0d45e | 678 | dir = make_relative_prefix (program_name, BINDIR, SCRIPTDIR); |
cdc0d45e | 679 | if (dir) |
5ed6aba4 NC |
680 | { |
681 | found = check_for_scripts_dir (dir); | |
682 | free (dir); | |
683 | if (found) | |
684 | return; | |
685 | } | |
cdc0d45e | 686 | |
4ca1b790 | 687 | dir = make_relative_prefix (program_name, TOOLBINDIR, SCRIPTDIR); |
4ca1b790 | 688 | if (dir) |
5ed6aba4 NC |
689 | { |
690 | found = check_for_scripts_dir (dir); | |
691 | free (dir); | |
692 | if (found) | |
693 | return; | |
694 | } | |
4ca1b790 | 695 | |
252b5132 | 696 | if (check_for_scripts_dir (SCRIPTDIR)) |
6d5e62f8 KH |
697 | /* We've been installed normally. */ |
698 | return; | |
252b5132 RH |
699 | |
700 | /* Look for "ldscripts" in the dir where our binary is. */ | |
701 | end = strrchr (program_name, '/'); | |
5af11cab AM |
702 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
703 | { | |
704 | /* We could have \foo\bar, or /foo\bar. */ | |
705 | char *bslash = strrchr (program_name, '\\'); | |
0125cdf2 | 706 | |
2ab47eed | 707 | if (end == NULL || (bslash != NULL && bslash > end)) |
5af11cab AM |
708 | end = bslash; |
709 | } | |
710 | #endif | |
252b5132 RH |
711 | |
712 | if (end == NULL) | |
0125cdf2 NC |
713 | /* Don't look for ldscripts in the current directory. There is |
714 | too much potential for confusion. */ | |
715 | return; | |
252b5132 RH |
716 | |
717 | dirlen = end - program_name; | |
718 | /* Make a copy of program_name in dir. | |
719 | Leave room for later "/../lib". */ | |
1579bae1 | 720 | dir = xmalloc (dirlen + 8); |
252b5132 RH |
721 | strncpy (dir, program_name, dirlen); |
722 | dir[dirlen] = '\0'; | |
723 | ||
724 | if (check_for_scripts_dir (dir)) | |
5ed6aba4 NC |
725 | { |
726 | free (dir); | |
727 | return; | |
728 | } | |
252b5132 RH |
729 | |
730 | /* Look for "ldscripts" in <the dir where our binary is>/../lib. */ | |
731 | strcpy (dir + dirlen, "/../lib"); | |
5ed6aba4 | 732 | check_for_scripts_dir (dir); |
6d5e62f8 | 733 | free (dir); |
252b5132 RH |
734 | } |
735 | ||
736 | void | |
1579bae1 | 737 | add_ysym (const char *name) |
252b5132 | 738 | { |
1579bae1 | 739 | if (link_info.notice_hash == NULL) |
252b5132 | 740 | { |
1579bae1 | 741 | link_info.notice_hash = xmalloc (sizeof (struct bfd_hash_table)); |
252b5132 RH |
742 | if (! bfd_hash_table_init_n (link_info.notice_hash, |
743 | bfd_hash_newfunc, | |
744 | 61)) | |
745 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
6d5e62f8 | 746 | } |
252b5132 | 747 | |
1579bae1 | 748 | if (bfd_hash_lookup (link_info.notice_hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
749 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); |
750 | } | |
751 | ||
752 | /* Record a symbol to be wrapped, from the --wrap option. */ | |
753 | ||
754 | void | |
1579bae1 | 755 | add_wrap (const char *name) |
252b5132 RH |
756 | { |
757 | if (link_info.wrap_hash == NULL) | |
758 | { | |
1579bae1 | 759 | link_info.wrap_hash = xmalloc (sizeof (struct bfd_hash_table)); |
252b5132 RH |
760 | if (! bfd_hash_table_init_n (link_info.wrap_hash, |
761 | bfd_hash_newfunc, | |
762 | 61)) | |
763 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
764 | } | |
0125cdf2 | 765 | |
b34976b6 | 766 | if (bfd_hash_lookup (link_info.wrap_hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
767 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); |
768 | } | |
769 | ||
770 | /* Handle the -retain-symbols-file option. */ | |
771 | ||
772 | void | |
1579bae1 | 773 | add_keepsyms_file (const char *filename) |
252b5132 RH |
774 | { |
775 | FILE *file; | |
776 | char *buf; | |
777 | size_t bufsize; | |
778 | int c; | |
779 | ||
780 | if (link_info.strip == strip_some) | |
781 | einfo (_("%X%P: error: duplicate retain-symbols-file\n")); | |
782 | ||
783 | file = fopen (filename, "r"); | |
1579bae1 | 784 | if (file == NULL) |
252b5132 RH |
785 | { |
786 | bfd_set_error (bfd_error_system_call); | |
787 | einfo ("%X%P: %s: %E\n", filename); | |
788 | return; | |
789 | } | |
790 | ||
1579bae1 | 791 | link_info.keep_hash = xmalloc (sizeof (struct bfd_hash_table)); |
252b5132 RH |
792 | if (! bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc)) |
793 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
794 | ||
795 | bufsize = 100; | |
1579bae1 | 796 | buf = xmalloc (bufsize); |
252b5132 RH |
797 | |
798 | c = getc (file); | |
799 | while (c != EOF) | |
800 | { | |
3882b010 | 801 | while (ISSPACE (c)) |
252b5132 RH |
802 | c = getc (file); |
803 | ||
804 | if (c != EOF) | |
805 | { | |
806 | size_t len = 0; | |
807 | ||
3882b010 | 808 | while (! ISSPACE (c) && c != EOF) |
252b5132 RH |
809 | { |
810 | buf[len] = c; | |
811 | ++len; | |
812 | if (len >= bufsize) | |
813 | { | |
814 | bufsize *= 2; | |
815 | buf = xrealloc (buf, bufsize); | |
816 | } | |
817 | c = getc (file); | |
818 | } | |
819 | ||
820 | buf[len] = '\0'; | |
821 | ||
1579bae1 | 822 | if (bfd_hash_lookup (link_info.keep_hash, buf, TRUE, TRUE) == NULL) |
252b5132 RH |
823 | einfo (_("%P%F: bfd_hash_lookup for insertion failed: %E\n")); |
824 | } | |
825 | } | |
826 | ||
827 | if (link_info.strip != strip_none) | |
828 | einfo (_("%P: `-retain-symbols-file' overrides `-s' and `-S'\n")); | |
829 | ||
5ed6aba4 | 830 | free (buf); |
252b5132 RH |
831 | link_info.strip = strip_some; |
832 | } | |
833 | \f | |
834 | /* Callbacks from the BFD linker routines. */ | |
835 | ||
836 | /* This is called when BFD has decided to include an archive member in | |
837 | a link. */ | |
838 | ||
b34976b6 | 839 | static bfd_boolean |
1579bae1 AM |
840 | add_archive_element (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
841 | bfd *abfd, | |
842 | const char *name) | |
252b5132 RH |
843 | { |
844 | lang_input_statement_type *input; | |
845 | ||
1579bae1 | 846 | input = xmalloc (sizeof (lang_input_statement_type)); |
252b5132 RH |
847 | input->filename = abfd->filename; |
848 | input->local_sym_name = abfd->filename; | |
849 | input->the_bfd = abfd; | |
850 | input->asymbols = NULL; | |
851 | input->next = NULL; | |
b34976b6 AM |
852 | input->just_syms_flag = FALSE; |
853 | input->loaded = FALSE; | |
854 | input->search_dirs_flag = FALSE; | |
252b5132 RH |
855 | |
856 | /* FIXME: The following fields are not set: header.next, | |
857 | header.type, closed, passive_position, symbol_count, | |
858 | next_real_file, is_archive, target, real. This bit of code is | |
859 | from the old decode_library_subfile function. I don't know | |
860 | whether any of those fields matters. */ | |
861 | ||
862 | ldlang_add_file (input); | |
863 | ||
1579bae1 | 864 | if (config.map_file != NULL) |
252b5132 | 865 | { |
b34976b6 | 866 | static bfd_boolean header_printed; |
252b5132 RH |
867 | struct bfd_link_hash_entry *h; |
868 | bfd *from; | |
869 | int len; | |
870 | ||
b34976b6 | 871 | h = bfd_link_hash_lookup (link_info.hash, name, FALSE, FALSE, TRUE); |
252b5132 RH |
872 | |
873 | if (h == NULL) | |
874 | from = NULL; | |
875 | else | |
876 | { | |
877 | switch (h->type) | |
878 | { | |
879 | default: | |
880 | from = NULL; | |
881 | break; | |
882 | ||
883 | case bfd_link_hash_defined: | |
884 | case bfd_link_hash_defweak: | |
885 | from = h->u.def.section->owner; | |
886 | break; | |
887 | ||
888 | case bfd_link_hash_undefined: | |
889 | case bfd_link_hash_undefweak: | |
890 | from = h->u.undef.abfd; | |
891 | break; | |
892 | ||
893 | case bfd_link_hash_common: | |
894 | from = h->u.c.p->section->owner; | |
895 | break; | |
896 | } | |
897 | } | |
898 | ||
899 | if (! header_printed) | |
900 | { | |
901 | char buf[100]; | |
902 | ||
e3c8793a | 903 | sprintf (buf, _("Archive member included because of file (symbol)\n\n")); |
252b5132 | 904 | minfo ("%s", buf); |
b34976b6 | 905 | header_printed = TRUE; |
252b5132 RH |
906 | } |
907 | ||
908 | if (bfd_my_archive (abfd) == NULL) | |
909 | { | |
910 | minfo ("%s", bfd_get_filename (abfd)); | |
911 | len = strlen (bfd_get_filename (abfd)); | |
912 | } | |
913 | else | |
914 | { | |
915 | minfo ("%s(%s)", bfd_get_filename (bfd_my_archive (abfd)), | |
916 | bfd_get_filename (abfd)); | |
917 | len = (strlen (bfd_get_filename (bfd_my_archive (abfd))) | |
918 | + strlen (bfd_get_filename (abfd)) | |
919 | + 2); | |
920 | } | |
921 | ||
922 | if (len >= 29) | |
923 | { | |
924 | print_nl (); | |
925 | len = 0; | |
926 | } | |
927 | while (len < 30) | |
928 | { | |
929 | print_space (); | |
930 | ++len; | |
931 | } | |
932 | ||
933 | if (from != NULL) | |
934 | minfo ("%B ", from); | |
935 | if (h != NULL) | |
936 | minfo ("(%T)\n", h->root.string); | |
937 | else | |
938 | minfo ("(%s)\n", name); | |
939 | } | |
940 | ||
941 | if (trace_files || trace_file_tries) | |
942 | info_msg ("%I\n", input); | |
943 | ||
b34976b6 | 944 | return TRUE; |
252b5132 RH |
945 | } |
946 | ||
947 | /* This is called when BFD has discovered a symbol which is defined | |
948 | multiple times. */ | |
949 | ||
b34976b6 | 950 | static bfd_boolean |
1579bae1 AM |
951 | multiple_definition (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
952 | const char *name, | |
953 | bfd *obfd, | |
954 | asection *osec, | |
955 | bfd_vma oval, | |
956 | bfd *nbfd, | |
957 | asection *nsec, | |
958 | bfd_vma nval) | |
252b5132 RH |
959 | { |
960 | /* If either section has the output_section field set to | |
961 | bfd_abs_section_ptr, it means that the section is being | |
962 | discarded, and this is not really a multiple definition at all. | |
963 | FIXME: It would be cleaner to somehow ignore symbols defined in | |
964 | sections which are being discarded. */ | |
965 | if ((osec->output_section != NULL | |
966 | && ! bfd_is_abs_section (osec) | |
967 | && bfd_is_abs_section (osec->output_section)) | |
968 | || (nsec->output_section != NULL | |
969 | && ! bfd_is_abs_section (nsec) | |
970 | && bfd_is_abs_section (nsec->output_section))) | |
b34976b6 | 971 | return TRUE; |
252b5132 RH |
972 | |
973 | einfo (_("%X%C: multiple definition of `%T'\n"), | |
974 | nbfd, nsec, nval, name); | |
1579bae1 | 975 | if (obfd != NULL) |
252b5132 | 976 | einfo (_("%D: first defined here\n"), obfd, osec, oval); |
9b14b192 NC |
977 | |
978 | if (command_line.relax) | |
979 | { | |
980 | einfo (_("%P: Disabling relaxation: it will not work with multiple definitions\n")); | |
981 | command_line.relax = 0; | |
982 | } | |
6d5e62f8 | 983 | |
b34976b6 | 984 | return TRUE; |
252b5132 RH |
985 | } |
986 | ||
987 | /* This is called when there is a definition of a common symbol, or | |
988 | when a common symbol is found for a symbol that is already defined, | |
989 | or when two common symbols are found. We only do something if | |
990 | -warn-common was used. */ | |
991 | ||
b34976b6 | 992 | static bfd_boolean |
1579bae1 AM |
993 | multiple_common (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
994 | const char *name, | |
995 | bfd *obfd, | |
996 | enum bfd_link_hash_type otype, | |
997 | bfd_vma osize, | |
998 | bfd *nbfd, | |
999 | enum bfd_link_hash_type ntype, | |
1000 | bfd_vma nsize) | |
252b5132 RH |
1001 | { |
1002 | if (! config.warn_common) | |
b34976b6 | 1003 | return TRUE; |
252b5132 RH |
1004 | |
1005 | if (ntype == bfd_link_hash_defined | |
1006 | || ntype == bfd_link_hash_defweak | |
1007 | || ntype == bfd_link_hash_indirect) | |
1008 | { | |
1009 | ASSERT (otype == bfd_link_hash_common); | |
1010 | einfo (_("%B: warning: definition of `%T' overriding common\n"), | |
1011 | nbfd, name); | |
1012 | if (obfd != NULL) | |
1013 | einfo (_("%B: warning: common is here\n"), obfd); | |
1014 | } | |
1015 | else if (otype == bfd_link_hash_defined | |
1016 | || otype == bfd_link_hash_defweak | |
1017 | || otype == bfd_link_hash_indirect) | |
1018 | { | |
1019 | ASSERT (ntype == bfd_link_hash_common); | |
1020 | einfo (_("%B: warning: common of `%T' overridden by definition\n"), | |
1021 | nbfd, name); | |
1022 | if (obfd != NULL) | |
1023 | einfo (_("%B: warning: defined here\n"), obfd); | |
1024 | } | |
1025 | else | |
1026 | { | |
1027 | ASSERT (otype == bfd_link_hash_common && ntype == bfd_link_hash_common); | |
1028 | if (osize > nsize) | |
1029 | { | |
1030 | einfo (_("%B: warning: common of `%T' overridden by larger common\n"), | |
1031 | nbfd, name); | |
1032 | if (obfd != NULL) | |
1033 | einfo (_("%B: warning: larger common is here\n"), obfd); | |
1034 | } | |
1035 | else if (nsize > osize) | |
1036 | { | |
1037 | einfo (_("%B: warning: common of `%T' overriding smaller common\n"), | |
1038 | nbfd, name); | |
1039 | if (obfd != NULL) | |
1040 | einfo (_("%B: warning: smaller common is here\n"), obfd); | |
1041 | } | |
1042 | else | |
1043 | { | |
1044 | einfo (_("%B: warning: multiple common of `%T'\n"), nbfd, name); | |
1045 | if (obfd != NULL) | |
1046 | einfo (_("%B: warning: previous common is here\n"), obfd); | |
1047 | } | |
1048 | } | |
1049 | ||
b34976b6 | 1050 | return TRUE; |
252b5132 RH |
1051 | } |
1052 | ||
1053 | /* This is called when BFD has discovered a set element. H is the | |
1054 | entry in the linker hash table for the set. SECTION and VALUE | |
1055 | represent a value which should be added to the set. */ | |
1056 | ||
b34976b6 | 1057 | static bfd_boolean |
1579bae1 AM |
1058 | add_to_set (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1059 | struct bfd_link_hash_entry *h, | |
1060 | bfd_reloc_code_real_type reloc, | |
1061 | bfd *abfd, | |
1062 | asection *section, | |
1063 | bfd_vma value) | |
252b5132 RH |
1064 | { |
1065 | if (config.warn_constructors) | |
1066 | einfo (_("%P: warning: global constructor %s used\n"), | |
1067 | h->root.string); | |
1068 | ||
1069 | if (! config.build_constructors) | |
b34976b6 | 1070 | return TRUE; |
252b5132 | 1071 | |
1579bae1 | 1072 | ldctor_add_set_entry (h, reloc, NULL, section, value); |
252b5132 RH |
1073 | |
1074 | if (h->type == bfd_link_hash_new) | |
1075 | { | |
1076 | h->type = bfd_link_hash_undefined; | |
1077 | h->u.undef.abfd = abfd; | |
1078 | /* We don't call bfd_link_add_undef to add this to the list of | |
1079 | undefined symbols because we are going to define it | |
1080 | ourselves. */ | |
1081 | } | |
1082 | ||
b34976b6 | 1083 | return TRUE; |
252b5132 RH |
1084 | } |
1085 | ||
1086 | /* This is called when BFD has discovered a constructor. This is only | |
1087 | called for some object file formats--those which do not handle | |
1088 | constructors in some more clever fashion. This is similar to | |
1089 | adding an element to a set, but less general. */ | |
1090 | ||
b34976b6 | 1091 | static bfd_boolean |
1579bae1 AM |
1092 | constructor_callback (struct bfd_link_info *info, |
1093 | bfd_boolean constructor, | |
1094 | const char *name, | |
1095 | bfd *abfd, | |
1096 | asection *section, | |
1097 | bfd_vma value) | |
252b5132 RH |
1098 | { |
1099 | char *s; | |
1100 | struct bfd_link_hash_entry *h; | |
1101 | char set_name[1 + sizeof "__CTOR_LIST__"]; | |
1102 | ||
1103 | if (config.warn_constructors) | |
1104 | einfo (_("%P: warning: global constructor %s used\n"), name); | |
1105 | ||
1106 | if (! config.build_constructors) | |
b34976b6 | 1107 | return TRUE; |
252b5132 RH |
1108 | |
1109 | /* Ensure that BFD_RELOC_CTOR exists now, so that we can give a | |
1110 | useful error message. */ | |
1111 | if (bfd_reloc_type_lookup (output_bfd, BFD_RELOC_CTOR) == NULL | |
1049f94e | 1112 | && (link_info.relocatable |
252b5132 RH |
1113 | || bfd_reloc_type_lookup (abfd, BFD_RELOC_CTOR) == NULL)) |
1114 | einfo (_("%P%F: BFD backend error: BFD_RELOC_CTOR unsupported\n")); | |
1115 | ||
1116 | s = set_name; | |
1117 | if (bfd_get_symbol_leading_char (abfd) != '\0') | |
1118 | *s++ = bfd_get_symbol_leading_char (abfd); | |
1119 | if (constructor) | |
1120 | strcpy (s, "__CTOR_LIST__"); | |
1121 | else | |
1122 | strcpy (s, "__DTOR_LIST__"); | |
1123 | ||
b34976b6 | 1124 | h = bfd_link_hash_lookup (info->hash, set_name, TRUE, TRUE, TRUE); |
252b5132 RH |
1125 | if (h == (struct bfd_link_hash_entry *) NULL) |
1126 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); | |
1127 | if (h->type == bfd_link_hash_new) | |
1128 | { | |
1129 | h->type = bfd_link_hash_undefined; | |
1130 | h->u.undef.abfd = abfd; | |
1131 | /* We don't call bfd_link_add_undef to add this to the list of | |
1132 | undefined symbols because we are going to define it | |
1133 | ourselves. */ | |
1134 | } | |
1135 | ||
1136 | ldctor_add_set_entry (h, BFD_RELOC_CTOR, name, section, value); | |
b34976b6 | 1137 | return TRUE; |
252b5132 RH |
1138 | } |
1139 | ||
1140 | /* A structure used by warning_callback to pass information through | |
1141 | bfd_map_over_sections. */ | |
1142 | ||
0125cdf2 NC |
1143 | struct warning_callback_info |
1144 | { | |
b34976b6 | 1145 | bfd_boolean found; |
252b5132 RH |
1146 | const char *warning; |
1147 | const char *symbol; | |
1148 | asymbol **asymbols; | |
1149 | }; | |
1150 | ||
1151 | /* This is called when there is a reference to a warning symbol. */ | |
1152 | ||
b34976b6 | 1153 | static bfd_boolean |
1579bae1 AM |
1154 | warning_callback (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1155 | const char *warning, | |
1156 | const char *symbol, | |
1157 | bfd *abfd, | |
1158 | asection *section, | |
1159 | bfd_vma address) | |
252b5132 RH |
1160 | { |
1161 | /* This is a hack to support warn_multiple_gp. FIXME: This should | |
1162 | have a cleaner interface, but what? */ | |
1163 | if (! config.warn_multiple_gp | |
1164 | && strcmp (warning, "using multiple gp values") == 0) | |
b34976b6 | 1165 | return TRUE; |
252b5132 RH |
1166 | |
1167 | if (section != NULL) | |
1168 | einfo ("%C: %s\n", abfd, section, address, warning); | |
1169 | else if (abfd == NULL) | |
1170 | einfo ("%P: %s\n", warning); | |
1171 | else if (symbol == NULL) | |
1172 | einfo ("%B: %s\n", abfd, warning); | |
1173 | else | |
1174 | { | |
1175 | lang_input_statement_type *entry; | |
1176 | asymbol **asymbols; | |
1177 | struct warning_callback_info info; | |
1178 | ||
1179 | /* Look through the relocs to see if we can find a plausible | |
1180 | address. */ | |
252b5132 RH |
1181 | entry = (lang_input_statement_type *) abfd->usrdata; |
1182 | if (entry != NULL && entry->asymbols != NULL) | |
1183 | asymbols = entry->asymbols; | |
1184 | else | |
1185 | { | |
1186 | long symsize; | |
1187 | long symbol_count; | |
1188 | ||
1189 | symsize = bfd_get_symtab_upper_bound (abfd); | |
1190 | if (symsize < 0) | |
1191 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
1579bae1 | 1192 | asymbols = xmalloc (symsize); |
252b5132 RH |
1193 | symbol_count = bfd_canonicalize_symtab (abfd, asymbols); |
1194 | if (symbol_count < 0) | |
1195 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
1196 | if (entry != NULL) | |
1197 | { | |
1198 | entry->asymbols = asymbols; | |
1199 | entry->symbol_count = symbol_count; | |
1200 | } | |
1201 | } | |
1202 | ||
b34976b6 | 1203 | info.found = FALSE; |
252b5132 RH |
1204 | info.warning = warning; |
1205 | info.symbol = symbol; | |
1206 | info.asymbols = asymbols; | |
1579bae1 | 1207 | bfd_map_over_sections (abfd, warning_find_reloc, &info); |
252b5132 RH |
1208 | |
1209 | if (! info.found) | |
1210 | einfo ("%B: %s\n", abfd, warning); | |
1211 | ||
1212 | if (entry == NULL) | |
1213 | free (asymbols); | |
1214 | } | |
1215 | ||
b34976b6 | 1216 | return TRUE; |
252b5132 RH |
1217 | } |
1218 | ||
1219 | /* This is called by warning_callback for each section. It checks the | |
1220 | relocs of the section to see if it can find a reference to the | |
1221 | symbol which triggered the warning. If it can, it uses the reloc | |
1222 | to give an error message with a file and line number. */ | |
1223 | ||
1224 | static void | |
1579bae1 | 1225 | warning_find_reloc (bfd *abfd, asection *sec, void *iarg) |
252b5132 | 1226 | { |
1579bae1 | 1227 | struct warning_callback_info *info = iarg; |
252b5132 RH |
1228 | long relsize; |
1229 | arelent **relpp; | |
1230 | long relcount; | |
1231 | arelent **p, **pend; | |
1232 | ||
1233 | if (info->found) | |
1234 | return; | |
1235 | ||
1236 | relsize = bfd_get_reloc_upper_bound (abfd, sec); | |
1237 | if (relsize < 0) | |
1238 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1239 | if (relsize == 0) | |
1240 | return; | |
1241 | ||
1579bae1 | 1242 | relpp = xmalloc (relsize); |
252b5132 RH |
1243 | relcount = bfd_canonicalize_reloc (abfd, sec, relpp, info->asymbols); |
1244 | if (relcount < 0) | |
1245 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1246 | ||
1247 | p = relpp; | |
1248 | pend = p + relcount; | |
1249 | for (; p < pend && *p != NULL; p++) | |
1250 | { | |
1251 | arelent *q = *p; | |
1252 | ||
1253 | if (q->sym_ptr_ptr != NULL | |
1254 | && *q->sym_ptr_ptr != NULL | |
1255 | && strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), info->symbol) == 0) | |
1256 | { | |
1257 | /* We found a reloc for the symbol we are looking for. */ | |
1258 | einfo ("%C: %s\n", abfd, sec, q->address, info->warning); | |
b34976b6 | 1259 | info->found = TRUE; |
252b5132 RH |
1260 | break; |
1261 | } | |
1262 | } | |
1263 | ||
1264 | free (relpp); | |
1265 | } | |
1266 | ||
1267 | /* This is called when an undefined symbol is found. */ | |
1268 | ||
b34976b6 | 1269 | static bfd_boolean |
1579bae1 AM |
1270 | undefined_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1271 | const char *name, | |
1272 | bfd *abfd, | |
1273 | asection *section, | |
1274 | bfd_vma address, | |
0b28295d | 1275 | bfd_boolean error) |
252b5132 RH |
1276 | { |
1277 | static char *error_name; | |
1278 | static unsigned int error_count; | |
1279 | ||
1280 | #define MAX_ERRORS_IN_A_ROW 5 | |
1281 | ||
1282 | if (config.warn_once) | |
1283 | { | |
1284 | static struct bfd_hash_table *hash; | |
1285 | ||
1286 | /* Only warn once about a particular undefined symbol. */ | |
252b5132 RH |
1287 | if (hash == NULL) |
1288 | { | |
1579bae1 | 1289 | hash = xmalloc (sizeof (struct bfd_hash_table)); |
252b5132 RH |
1290 | if (! bfd_hash_table_init (hash, bfd_hash_newfunc)) |
1291 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); | |
1292 | } | |
1293 | ||
b34976b6 AM |
1294 | if (bfd_hash_lookup (hash, name, FALSE, FALSE) != NULL) |
1295 | return TRUE; | |
252b5132 | 1296 | |
b34976b6 | 1297 | if (bfd_hash_lookup (hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
1298 | einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); |
1299 | } | |
1300 | ||
1301 | /* We never print more than a reasonable number of errors in a row | |
1302 | for a single symbol. */ | |
1579bae1 | 1303 | if (error_name != NULL |
252b5132 RH |
1304 | && strcmp (name, error_name) == 0) |
1305 | ++error_count; | |
1306 | else | |
1307 | { | |
1308 | error_count = 0; | |
1579bae1 | 1309 | if (error_name != NULL) |
252b5132 | 1310 | free (error_name); |
d1b2b2dc | 1311 | error_name = xstrdup (name); |
252b5132 RH |
1312 | } |
1313 | ||
1314 | if (section != NULL) | |
1315 | { | |
1316 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1317 | { |
0b28295d ILT |
1318 | if (error) |
1319 | einfo (_("%X%C: undefined reference to `%T'\n"), | |
1320 | abfd, section, address, name); | |
1321 | else | |
1322 | einfo (_("%C: warning: undefined reference to `%T'\n"), | |
1323 | abfd, section, address, name); | |
b6f29aaa | 1324 | } |
252b5132 | 1325 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1326 | { |
1327 | if (error) | |
1328 | einfo (_("%X%D: more undefined references to `%T' follow\n"), | |
1329 | abfd, section, address, name); | |
1330 | else | |
1331 | einfo (_("%D: warning: more undefined references to `%T' follow\n"), | |
1332 | abfd, section, address, name); | |
1333 | } | |
1334 | else if (error) | |
1335 | einfo ("%X"); | |
252b5132 RH |
1336 | } |
1337 | else | |
1338 | { | |
1339 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1340 | { |
0b28295d ILT |
1341 | if (error) |
1342 | einfo (_("%X%B: undefined reference to `%T'\n"), | |
1343 | abfd, name); | |
1344 | else | |
1345 | einfo (_("%B: warning: undefined reference to `%T'\n"), | |
1346 | abfd, name); | |
b6f29aaa | 1347 | } |
252b5132 | 1348 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1349 | { |
1350 | if (error) | |
1351 | einfo (_("%X%B: more undefined references to `%T' follow\n"), | |
1352 | abfd, name); | |
1353 | else | |
1354 | einfo (_("%B: warning: more undefined references to `%T' follow\n"), | |
1355 | abfd, name); | |
1356 | } | |
1357 | else if (error) | |
1358 | einfo ("%X"); | |
252b5132 RH |
1359 | } |
1360 | ||
b34976b6 | 1361 | return TRUE; |
252b5132 RH |
1362 | } |
1363 | ||
8aae64e6 AO |
1364 | /* Counter to limit the number of relocation overflow error messages |
1365 | to print. Errors are printed as it is decremented. When it's | |
1366 | called and the counter is zero, a final message is printed | |
1367 | indicating more relocations were omitted. When it gets to -1, no | |
1368 | such errors are printed. If it's initially set to a value less | |
1369 | than -1, all such errors will be printed (--verbose does this). */ | |
1370 | ||
1371 | int overflow_cutoff_limit = 10; | |
1372 | ||
252b5132 RH |
1373 | /* This is called when a reloc overflows. */ |
1374 | ||
b34976b6 | 1375 | static bfd_boolean |
1579bae1 AM |
1376 | reloc_overflow (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1377 | const char *name, | |
1378 | const char *reloc_name, | |
1379 | bfd_vma addend, | |
1380 | bfd *abfd, | |
1381 | asection *section, | |
1382 | bfd_vma address) | |
252b5132 | 1383 | { |
8aae64e6 AO |
1384 | if (overflow_cutoff_limit == -1) |
1385 | return TRUE; | |
1386 | ||
1579bae1 | 1387 | if (abfd == NULL) |
252b5132 RH |
1388 | einfo (_("%P%X: generated")); |
1389 | else | |
1390 | einfo ("%X%C:", abfd, section, address); | |
8aae64e6 AO |
1391 | |
1392 | if (overflow_cutoff_limit >= 0 | |
1393 | && overflow_cutoff_limit-- == 0) | |
1394 | { | |
1395 | einfo (_(" additional relocation overflows omitted from the output\n")); | |
1396 | return TRUE; | |
1397 | } | |
1398 | ||
252b5132 RH |
1399 | einfo (_(" relocation truncated to fit: %s %T"), reloc_name, name); |
1400 | if (addend != 0) | |
1401 | einfo ("+%v", addend); | |
1402 | einfo ("\n"); | |
b34976b6 | 1403 | return TRUE; |
252b5132 RH |
1404 | } |
1405 | ||
1406 | /* This is called when a dangerous relocation is made. */ | |
1407 | ||
b34976b6 | 1408 | static bfd_boolean |
1579bae1 AM |
1409 | reloc_dangerous (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1410 | const char *message, | |
1411 | bfd *abfd, | |
1412 | asection *section, | |
1413 | bfd_vma address) | |
252b5132 | 1414 | { |
1579bae1 | 1415 | if (abfd == NULL) |
252b5132 RH |
1416 | einfo (_("%P%X: generated")); |
1417 | else | |
1418 | einfo ("%X%C:", abfd, section, address); | |
1419 | einfo (_("dangerous relocation: %s\n"), message); | |
b34976b6 | 1420 | return TRUE; |
252b5132 RH |
1421 | } |
1422 | ||
1423 | /* This is called when a reloc is being generated attached to a symbol | |
1424 | that is not being output. */ | |
1425 | ||
b34976b6 | 1426 | static bfd_boolean |
1579bae1 AM |
1427 | unattached_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1428 | const char *name, | |
1429 | bfd *abfd, | |
1430 | asection *section, | |
1431 | bfd_vma address) | |
252b5132 | 1432 | { |
1579bae1 | 1433 | if (abfd == NULL) |
252b5132 RH |
1434 | einfo (_("%P%X: generated")); |
1435 | else | |
1436 | einfo ("%X%C:", abfd, section, address); | |
1437 | einfo (_(" reloc refers to symbol `%T' which is not being output\n"), name); | |
b34976b6 | 1438 | return TRUE; |
252b5132 RH |
1439 | } |
1440 | ||
1441 | /* This is called if link_info.notice_all is set, or when a symbol in | |
1442 | link_info.notice_hash is found. Symbols are put in notice_hash | |
1443 | using the -y option. */ | |
1444 | ||
b34976b6 | 1445 | static bfd_boolean |
1579bae1 AM |
1446 | notice (struct bfd_link_info *info, |
1447 | const char *name, | |
1448 | bfd *abfd, | |
1449 | asection *section, | |
1450 | bfd_vma value) | |
252b5132 RH |
1451 | { |
1452 | if (! info->notice_all | |
1453 | || (info->notice_hash != NULL | |
b34976b6 | 1454 | && bfd_hash_lookup (info->notice_hash, name, FALSE, FALSE) != NULL)) |
252b5132 RH |
1455 | { |
1456 | if (bfd_is_und_section (section)) | |
1457 | einfo ("%B: reference to %s\n", abfd, name); | |
1458 | else | |
1459 | einfo ("%B: definition of %s\n", abfd, name); | |
1460 | } | |
1461 | ||
1462 | if (command_line.cref || nocrossref_list != NULL) | |
1463 | add_cref (name, abfd, section, value); | |
1464 | ||
b34976b6 | 1465 | return TRUE; |
252b5132 | 1466 | } |