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; | |
2d643429 | 270 | config.hash_table_size = 0; |
b34976b6 AM |
271 | command_line.force_common_definition = FALSE; |
272 | command_line.inhibit_common_definition = FALSE; | |
252b5132 RH |
273 | command_line.interpreter = NULL; |
274 | command_line.rpath = NULL; | |
b34976b6 AM |
275 | command_line.warn_mismatch = TRUE; |
276 | command_line.check_section_addresses = TRUE; | |
312b768e | 277 | command_line.accept_unknown_input_arch = FALSE; |
35835446 | 278 | command_line.reduce_memory_overheads = FALSE; |
252b5132 RH |
279 | |
280 | /* We initialize DEMANGLING based on the environment variable | |
281 | COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the | |
282 | output of the linker, unless COLLECT_NO_DEMANGLE is set in the | |
283 | environment. Acting the same way here lets us provide the same | |
284 | interface by default. */ | |
285 | demangling = getenv ("COLLECT_NO_DEMANGLE") == NULL; | |
286 | ||
1049f94e | 287 | link_info.relocatable = FALSE; |
b34976b6 | 288 | link_info.emitrelocations = FALSE; |
b5067602 | 289 | link_info.task_link = FALSE; |
b34976b6 | 290 | link_info.shared = FALSE; |
36af4a4e JJ |
291 | link_info.pie = FALSE; |
292 | link_info.executable = FALSE; | |
b34976b6 AM |
293 | link_info.symbolic = FALSE; |
294 | link_info.export_dynamic = FALSE; | |
295 | link_info.static_link = FALSE; | |
296 | link_info.traditional_format = FALSE; | |
297 | link_info.optimize = FALSE; | |
560e09e9 NC |
298 | link_info.unresolved_syms_in_objects = RM_NOT_YET_SET; |
299 | link_info.unresolved_syms_in_shared_libs = RM_NOT_YET_SET; | |
b34976b6 AM |
300 | link_info.allow_multiple_definition = FALSE; |
301 | link_info.allow_undefined_version = TRUE; | |
b5067602 AM |
302 | link_info.keep_memory = TRUE; |
303 | link_info.notice_all = FALSE; | |
304 | link_info.nocopyreloc = FALSE; | |
305 | link_info.new_dtags = FALSE; | |
306 | link_info.combreloc = TRUE; | |
307 | link_info.eh_frame_hdr = FALSE; | |
8c37241b | 308 | link_info.relro = FALSE; |
d5cd3933 | 309 | link_info.strip_discarded = TRUE; |
252b5132 | 310 | link_info.strip = strip_none; |
f5fa8ca2 | 311 | link_info.discard = discard_sec_merge; |
b5067602 AM |
312 | link_info.common_skip_ar_aymbols = bfd_link_common_skip_none; |
313 | link_info.callbacks = &link_callbacks; | |
252b5132 RH |
314 | link_info.hash = NULL; |
315 | link_info.keep_hash = NULL; | |
252b5132 RH |
316 | link_info.notice_hash = NULL; |
317 | link_info.wrap_hash = NULL; | |
b5067602 AM |
318 | link_info.input_bfds = NULL; |
319 | link_info.create_object_symbols_section = NULL; | |
320 | link_info.gc_sym_list = NULL; | |
321 | link_info.base_file = NULL; | |
3dbf70a2 MM |
322 | /* SVR4 linkers seem to set DT_INIT and DT_FINI based on magic _init |
323 | and _fini symbols. We are compatible. */ | |
324 | link_info.init_function = "_init"; | |
325 | link_info.fini_function = "_fini"; | |
e0076ab3 | 326 | link_info.pei386_auto_import = -1; |
b34976b6 | 327 | link_info.pei386_runtime_pseudo_reloc = FALSE; |
db6751f2 | 328 | link_info.spare_dynamic_tags = 5; |
1579bae1 AM |
329 | link_info.flags = 0; |
330 | link_info.flags_1 = 0; | |
d9c458fc | 331 | link_info.need_relax_finalize = FALSE; |
3dbf70a2 | 332 | |
252b5132 RH |
333 | ldfile_add_arch (""); |
334 | ||
b34976b6 AM |
335 | config.make_executable = TRUE; |
336 | force_make_executable = FALSE; | |
337 | config.magic_demand_paged = TRUE; | |
338 | config.text_read_only = TRUE; | |
252b5132 RH |
339 | |
340 | emulation = get_emulation (argc, argv); | |
341 | ldemul_choose_mode (emulation); | |
742aeb63 | 342 | default_target = ldemul_choose_target (argc, argv); |
252b5132 RH |
343 | lang_init (); |
344 | ldemul_before_parse (); | |
b34976b6 | 345 | lang_has_input_file = FALSE; |
252b5132 RH |
346 | parse_args (argc, argv); |
347 | ||
2d643429 NC |
348 | if (config.hash_table_size != 0) |
349 | bfd_hash_set_default_size (config.hash_table_size); | |
350 | ||
252b5132 RH |
351 | ldemul_set_symbols (); |
352 | ||
1049f94e | 353 | if (link_info.relocatable) |
252b5132 RH |
354 | { |
355 | if (command_line.gc_sections) | |
356 | einfo ("%P%F: --gc-sections and -r may not be used together\n"); | |
252b5132 RH |
357 | else if (command_line.relax) |
358 | einfo (_("%P%F: --relax and -r may not be used together\n")); | |
359 | if (link_info.shared) | |
360 | einfo (_("%P%F: -r and -shared may not be used together\n")); | |
361 | } | |
362 | ||
7333607e JJ |
363 | if (! link_info.shared) |
364 | { | |
365 | if (command_line.filter_shlib) | |
e97cb84f | 366 | einfo (_("%P%F: -F may not be used without -shared\n")); |
7333607e | 367 | if (command_line.auxiliary_filters) |
e97cb84f | 368 | einfo (_("%P%F: -f may not be used without -shared\n")); |
7333607e JJ |
369 | } |
370 | ||
36af4a4e JJ |
371 | if (! link_info.shared || link_info.pie) |
372 | link_info.executable = TRUE; | |
373 | ||
252b5132 RH |
374 | /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I |
375 | don't see how else this can be handled, since in this case we | |
376 | must preserve all externally visible symbols. */ | |
1049f94e | 377 | if (link_info.relocatable && link_info.strip == strip_all) |
252b5132 RH |
378 | { |
379 | link_info.strip = strip_debugger; | |
f5fa8ca2 | 380 | if (link_info.discard == discard_sec_merge) |
252b5132 RH |
381 | link_info.discard = discard_all; |
382 | } | |
383 | ||
384 | /* This essentially adds another -L directory so this must be done after | |
385 | the -L's in argv have been processed. */ | |
386 | set_scripts_dir (); | |
387 | ||
b9a8de1e NC |
388 | /* If we have not already opened and parsed a linker script |
389 | read the emulation's appropriate default script. */ | |
b90e1c6f | 390 | if (saved_script_handle == NULL) |
252b5132 | 391 | { |
252b5132 | 392 | int isfile; |
b7a26f91 | 393 | char *s = ldemul_get_script (&isfile); |
252b5132 RH |
394 | |
395 | if (isfile) | |
396 | ldfile_open_command_file (s); | |
397 | else | |
b7a26f91 | 398 | { |
252b5132 RH |
399 | lex_string = s; |
400 | lex_redirect (s); | |
401 | } | |
402 | parser_input = input_script; | |
403 | yyparse (); | |
404 | lex_string = NULL; | |
405 | } | |
406 | ||
b9a8de1e NC |
407 | if (trace_file_tries) |
408 | { | |
9cb61eab AM |
409 | if (saved_script_handle) |
410 | info_msg (_("using external linker script:")); | |
411 | else | |
412 | info_msg (_("using internal linker script:")); | |
413 | info_msg ("\n==================================================\n"); | |
b9a8de1e NC |
414 | |
415 | if (saved_script_handle) | |
416 | { | |
74699268 | 417 | static const int ld_bufsz = 8193; |
b9a8de1e | 418 | size_t n; |
74699268 | 419 | char *buf = xmalloc (ld_bufsz); |
b9a8de1e NC |
420 | |
421 | rewind (saved_script_handle); | |
74699268 | 422 | while ((n = fread (buf, 1, ld_bufsz - 1, saved_script_handle)) > 0) |
b9a8de1e | 423 | { |
b7a26f91 | 424 | buf[n] = 0; |
b9a8de1e NC |
425 | info_msg (buf); |
426 | } | |
427 | rewind (saved_script_handle); | |
428 | free (buf); | |
429 | } | |
430 | else | |
431 | { | |
432 | int isfile; | |
433 | ||
b7a26f91 | 434 | info_msg (ldemul_get_script (&isfile)); |
b9a8de1e | 435 | } |
b7a26f91 | 436 | |
b9a8de1e NC |
437 | info_msg ("\n==================================================\n"); |
438 | } | |
439 | ||
252b5132 RH |
440 | lang_final (); |
441 | ||
b34976b6 | 442 | if (!lang_has_input_file) |
252b5132 RH |
443 | { |
444 | if (version_printed) | |
445 | xexit (0); | |
446 | einfo (_("%P%F: no input files\n")); | |
447 | } | |
448 | ||
449 | if (trace_files) | |
0125cdf2 | 450 | info_msg (_("%P: mode %s\n"), emulation); |
252b5132 RH |
451 | |
452 | ldemul_after_parse (); | |
453 | ||
252b5132 RH |
454 | if (config.map_filename) |
455 | { | |
456 | if (strcmp (config.map_filename, "-") == 0) | |
457 | { | |
458 | config.map_file = stdout; | |
459 | } | |
460 | else | |
461 | { | |
462 | config.map_file = fopen (config.map_filename, FOPEN_WT); | |
463 | if (config.map_file == (FILE *) NULL) | |
464 | { | |
465 | bfd_set_error (bfd_error_system_call); | |
466 | einfo (_("%P%F: cannot open map file %s: %E\n"), | |
467 | config.map_filename); | |
468 | } | |
469 | } | |
470 | } | |
471 | ||
252b5132 RH |
472 | lang_process (); |
473 | ||
474 | /* Print error messages for any missing symbols, for any warning | |
6d5e62f8 | 475 | symbols, and possibly multiple definitions. */ |
1049f94e | 476 | if (link_info.relocatable) |
252b5132 RH |
477 | output_bfd->flags &= ~EXEC_P; |
478 | else | |
479 | output_bfd->flags |= EXEC_P; | |
480 | ||
481 | ldwrite (); | |
482 | ||
483 | if (config.map_file != NULL) | |
484 | lang_map (); | |
485 | if (command_line.cref) | |
486 | output_cref (config.map_file != NULL ? config.map_file : stdout); | |
487 | if (nocrossref_list != NULL) | |
488 | check_nocrossrefs (); | |
489 | ||
1049f94e | 490 | /* Even if we're producing relocatable output, some non-fatal errors should |
252b5132 | 491 | be reported in the exit status. (What non-fatal errors, if any, do we |
1049f94e | 492 | want to ignore for relocatable output?) */ |
b34976b6 | 493 | if (!config.make_executable && !force_make_executable) |
252b5132 | 494 | { |
b34976b6 | 495 | if (trace_files) |
0125cdf2 NC |
496 | einfo (_("%P: link errors found, deleting executable `%s'\n"), |
497 | output_filename); | |
252b5132 RH |
498 | |
499 | /* The file will be removed by remove_output. */ | |
252b5132 RH |
500 | xexit (1); |
501 | } | |
502 | else | |
503 | { | |
504 | if (! bfd_close (output_bfd)) | |
505 | einfo (_("%F%B: final close failed: %E\n"), output_bfd); | |
506 | ||
507 | /* If the --force-exe-suffix is enabled, and we're making an | |
6d5e62f8 KH |
508 | executable file and it doesn't end in .exe, copy it to one |
509 | which does. */ | |
1049f94e | 510 | if (! link_info.relocatable && command_line.force_exe_suffix) |
252b5132 RH |
511 | { |
512 | int len = strlen (output_filename); | |
0125cdf2 | 513 | |
6d5e62f8 | 514 | if (len < 4 |
252b5132 RH |
515 | || (strcasecmp (output_filename + len - 4, ".exe") != 0 |
516 | && strcasecmp (output_filename + len - 4, ".dll") != 0)) | |
517 | { | |
518 | FILE *src; | |
519 | FILE *dst; | |
520 | const int bsize = 4096; | |
521 | char *buf = xmalloc (bsize); | |
522 | int l; | |
523 | char *dst_name = xmalloc (len + 5); | |
0125cdf2 | 524 | |
252b5132 RH |
525 | strcpy (dst_name, output_filename); |
526 | strcat (dst_name, ".exe"); | |
527 | src = fopen (output_filename, FOPEN_RB); | |
528 | dst = fopen (dst_name, FOPEN_WB); | |
529 | ||
530 | if (!src) | |
1579bae1 AM |
531 | einfo (_("%X%P: unable to open for source of copy `%s'\n"), |
532 | output_filename); | |
252b5132 | 533 | if (!dst) |
1579bae1 AM |
534 | einfo (_("%X%P: unable to open for destination of copy `%s'\n"), |
535 | dst_name); | |
252b5132 RH |
536 | while ((l = fread (buf, 1, bsize, src)) > 0) |
537 | { | |
538 | int done = fwrite (buf, 1, l, dst); | |
0125cdf2 | 539 | |
252b5132 | 540 | if (done != l) |
0125cdf2 | 541 | einfo (_("%P: Error writing file `%s'\n"), dst_name); |
252b5132 | 542 | } |
0125cdf2 | 543 | |
252b5132 RH |
544 | fclose (src); |
545 | if (fclose (dst) == EOF) | |
0125cdf2 | 546 | einfo (_("%P: Error closing file `%s'\n"), dst_name); |
252b5132 RH |
547 | free (dst_name); |
548 | free (buf); | |
549 | } | |
550 | } | |
551 | } | |
552 | ||
553 | END_PROGRESS (program_name); | |
554 | ||
555 | if (config.stats) | |
556 | { | |
557 | #ifdef HAVE_SBRK | |
1579bae1 | 558 | char *lim = sbrk (0); |
252b5132 RH |
559 | #endif |
560 | long run_time = get_run_time () - start_time; | |
561 | ||
562 | fprintf (stderr, _("%s: total time in link: %ld.%06ld\n"), | |
563 | program_name, run_time / 1000000, run_time % 1000000); | |
564 | #ifdef HAVE_SBRK | |
565 | fprintf (stderr, _("%s: data size %ld\n"), program_name, | |
566 | (long) (lim - (char *) &environ)); | |
567 | #endif | |
568 | } | |
569 | ||
570 | /* Prevent remove_output from doing anything, after a successful link. */ | |
571 | output_filename = NULL; | |
572 | ||
573 | xexit (0); | |
574 | return 0; | |
575 | } | |
576 | ||
577 | /* We need to find any explicitly given emulation in order to initialize the | |
578 | state that's needed by the lex&yacc argument parser (parse_args). */ | |
579 | ||
580 | static char * | |
1579bae1 | 581 | get_emulation (int argc, char **argv) |
252b5132 RH |
582 | { |
583 | char *emulation; | |
584 | int i; | |
585 | ||
586 | emulation = getenv (EMULATION_ENVIRON); | |
587 | if (emulation == NULL) | |
588 | emulation = DEFAULT_EMULATION; | |
589 | ||
590 | for (i = 1; i < argc; i++) | |
591 | { | |
592 | if (!strncmp (argv[i], "-m", 2)) | |
593 | { | |
594 | if (argv[i][2] == '\0') | |
595 | { | |
596 | /* -m EMUL */ | |
597 | if (i < argc - 1) | |
598 | { | |
599 | emulation = argv[i + 1]; | |
600 | i++; | |
601 | } | |
602 | else | |
0125cdf2 | 603 | einfo (_("%P%F: missing argument to -m\n")); |
252b5132 RH |
604 | } |
605 | else if (strcmp (argv[i], "-mips1") == 0 | |
606 | || strcmp (argv[i], "-mips2") == 0 | |
607 | || strcmp (argv[i], "-mips3") == 0 | |
d1cf510e | 608 | || strcmp (argv[i], "-mips4") == 0 |
6f33421c CD |
609 | || strcmp (argv[i], "-mips5") == 0 |
610 | || strcmp (argv[i], "-mips32") == 0 | |
611 | || strcmp (argv[i], "-mips32r2") == 0 | |
5f74bc13 CD |
612 | || strcmp (argv[i], "-mips64") == 0 |
613 | || strcmp (argv[i], "-mips64r2") == 0) | |
252b5132 | 614 | { |
31d677f9 | 615 | /* FIXME: The arguments -mips1, -mips2, -mips3, etc. are |
252b5132 RH |
616 | passed to the linker by some MIPS compilers. They |
617 | generally tell the linker to use a slightly different | |
618 | library path. Perhaps someday these should be | |
619 | implemented as emulations; until then, we just ignore | |
620 | the arguments and hope that nobody ever creates | |
621 | emulations named ips1, ips2 or ips3. */ | |
622 | } | |
623 | else if (strcmp (argv[i], "-m486") == 0) | |
624 | { | |
625 | /* FIXME: The argument -m486 is passed to the linker on | |
626 | some Linux systems. Hope that nobody creates an | |
627 | emulation named 486. */ | |
628 | } | |
629 | else | |
630 | { | |
631 | /* -mEMUL */ | |
632 | emulation = &argv[i][2]; | |
633 | } | |
634 | } | |
635 | } | |
636 | ||
637 | return emulation; | |
638 | } | |
639 | ||
640 | /* If directory DIR contains an "ldscripts" subdirectory, | |
b34976b6 AM |
641 | add DIR to the library search path and return TRUE, |
642 | else return FALSE. */ | |
252b5132 | 643 | |
b34976b6 | 644 | static bfd_boolean |
1579bae1 | 645 | check_for_scripts_dir (char *dir) |
252b5132 RH |
646 | { |
647 | size_t dirlen; | |
648 | char *buf; | |
649 | struct stat s; | |
b34976b6 | 650 | bfd_boolean res; |
252b5132 RH |
651 | |
652 | dirlen = strlen (dir); | |
653 | /* sizeof counts the terminating NUL. */ | |
1579bae1 | 654 | buf = xmalloc (dirlen + sizeof ("/ldscripts")); |
252b5132 RH |
655 | sprintf (buf, "%s/ldscripts", dir); |
656 | ||
657 | res = stat (buf, &s) == 0 && S_ISDIR (s.st_mode); | |
658 | free (buf); | |
659 | if (res) | |
b34976b6 | 660 | ldfile_add_library_path (dir, FALSE); |
252b5132 RH |
661 | return res; |
662 | } | |
663 | ||
664 | /* Set the default directory for finding script files. | |
665 | Libraries will be searched for here too, but that's ok. | |
666 | We look for the "ldscripts" directory in: | |
667 | ||
cdc0d45e DJ |
668 | SCRIPTDIR (passed from Makefile) |
669 | (adjusted according to the current location of the binary) | |
252b5132 RH |
670 | SCRIPTDIR (passed from Makefile) |
671 | the dir where this program is (for using it from the build tree) | |
cdc0d45e | 672 | the dir where this program is/../lib |
0125cdf2 | 673 | (for installing the tool suite elsewhere). */ |
252b5132 RH |
674 | |
675 | static void | |
1579bae1 | 676 | set_scripts_dir (void) |
252b5132 RH |
677 | { |
678 | char *end, *dir; | |
679 | size_t dirlen; | |
5ed6aba4 | 680 | bfd_boolean found; |
252b5132 | 681 | |
cdc0d45e | 682 | dir = make_relative_prefix (program_name, BINDIR, SCRIPTDIR); |
cdc0d45e | 683 | if (dir) |
5ed6aba4 NC |
684 | { |
685 | found = check_for_scripts_dir (dir); | |
686 | free (dir); | |
687 | if (found) | |
688 | return; | |
689 | } | |
cdc0d45e | 690 | |
4ca1b790 | 691 | dir = make_relative_prefix (program_name, TOOLBINDIR, SCRIPTDIR); |
4ca1b790 | 692 | if (dir) |
5ed6aba4 NC |
693 | { |
694 | found = check_for_scripts_dir (dir); | |
695 | free (dir); | |
696 | if (found) | |
697 | return; | |
698 | } | |
4ca1b790 | 699 | |
252b5132 | 700 | if (check_for_scripts_dir (SCRIPTDIR)) |
6d5e62f8 KH |
701 | /* We've been installed normally. */ |
702 | return; | |
252b5132 RH |
703 | |
704 | /* Look for "ldscripts" in the dir where our binary is. */ | |
705 | end = strrchr (program_name, '/'); | |
5af11cab AM |
706 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
707 | { | |
708 | /* We could have \foo\bar, or /foo\bar. */ | |
709 | char *bslash = strrchr (program_name, '\\'); | |
0125cdf2 | 710 | |
2ab47eed | 711 | if (end == NULL || (bslash != NULL && bslash > end)) |
5af11cab AM |
712 | end = bslash; |
713 | } | |
714 | #endif | |
252b5132 RH |
715 | |
716 | if (end == NULL) | |
0125cdf2 NC |
717 | /* Don't look for ldscripts in the current directory. There is |
718 | too much potential for confusion. */ | |
719 | return; | |
252b5132 RH |
720 | |
721 | dirlen = end - program_name; | |
722 | /* Make a copy of program_name in dir. | |
723 | Leave room for later "/../lib". */ | |
1579bae1 | 724 | dir = xmalloc (dirlen + 8); |
252b5132 RH |
725 | strncpy (dir, program_name, dirlen); |
726 | dir[dirlen] = '\0'; | |
727 | ||
728 | if (check_for_scripts_dir (dir)) | |
5ed6aba4 NC |
729 | { |
730 | free (dir); | |
731 | return; | |
732 | } | |
252b5132 RH |
733 | |
734 | /* Look for "ldscripts" in <the dir where our binary is>/../lib. */ | |
735 | strcpy (dir + dirlen, "/../lib"); | |
5ed6aba4 | 736 | check_for_scripts_dir (dir); |
6d5e62f8 | 737 | free (dir); |
252b5132 RH |
738 | } |
739 | ||
740 | void | |
1579bae1 | 741 | add_ysym (const char *name) |
252b5132 | 742 | { |
1579bae1 | 743 | if (link_info.notice_hash == NULL) |
252b5132 | 744 | { |
1579bae1 | 745 | link_info.notice_hash = xmalloc (sizeof (struct bfd_hash_table)); |
252b5132 RH |
746 | if (! bfd_hash_table_init_n (link_info.notice_hash, |
747 | bfd_hash_newfunc, | |
748 | 61)) | |
749 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
6d5e62f8 | 750 | } |
252b5132 | 751 | |
1579bae1 | 752 | if (bfd_hash_lookup (link_info.notice_hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
753 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); |
754 | } | |
755 | ||
756 | /* Record a symbol to be wrapped, from the --wrap option. */ | |
757 | ||
758 | void | |
1579bae1 | 759 | add_wrap (const char *name) |
252b5132 RH |
760 | { |
761 | if (link_info.wrap_hash == NULL) | |
762 | { | |
1579bae1 | 763 | link_info.wrap_hash = xmalloc (sizeof (struct bfd_hash_table)); |
252b5132 RH |
764 | if (! bfd_hash_table_init_n (link_info.wrap_hash, |
765 | bfd_hash_newfunc, | |
766 | 61)) | |
767 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
768 | } | |
0125cdf2 | 769 | |
b34976b6 | 770 | if (bfd_hash_lookup (link_info.wrap_hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
771 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); |
772 | } | |
773 | ||
774 | /* Handle the -retain-symbols-file option. */ | |
775 | ||
776 | void | |
1579bae1 | 777 | add_keepsyms_file (const char *filename) |
252b5132 RH |
778 | { |
779 | FILE *file; | |
780 | char *buf; | |
781 | size_t bufsize; | |
782 | int c; | |
783 | ||
784 | if (link_info.strip == strip_some) | |
785 | einfo (_("%X%P: error: duplicate retain-symbols-file\n")); | |
786 | ||
787 | file = fopen (filename, "r"); | |
1579bae1 | 788 | if (file == NULL) |
252b5132 RH |
789 | { |
790 | bfd_set_error (bfd_error_system_call); | |
791 | einfo ("%X%P: %s: %E\n", filename); | |
792 | return; | |
793 | } | |
794 | ||
1579bae1 | 795 | link_info.keep_hash = xmalloc (sizeof (struct bfd_hash_table)); |
252b5132 RH |
796 | if (! bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc)) |
797 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
798 | ||
799 | bufsize = 100; | |
1579bae1 | 800 | buf = xmalloc (bufsize); |
252b5132 RH |
801 | |
802 | c = getc (file); | |
803 | while (c != EOF) | |
804 | { | |
3882b010 | 805 | while (ISSPACE (c)) |
252b5132 RH |
806 | c = getc (file); |
807 | ||
808 | if (c != EOF) | |
809 | { | |
810 | size_t len = 0; | |
811 | ||
3882b010 | 812 | while (! ISSPACE (c) && c != EOF) |
252b5132 RH |
813 | { |
814 | buf[len] = c; | |
815 | ++len; | |
816 | if (len >= bufsize) | |
817 | { | |
818 | bufsize *= 2; | |
819 | buf = xrealloc (buf, bufsize); | |
820 | } | |
821 | c = getc (file); | |
822 | } | |
823 | ||
824 | buf[len] = '\0'; | |
825 | ||
1579bae1 | 826 | if (bfd_hash_lookup (link_info.keep_hash, buf, TRUE, TRUE) == NULL) |
252b5132 RH |
827 | einfo (_("%P%F: bfd_hash_lookup for insertion failed: %E\n")); |
828 | } | |
829 | } | |
830 | ||
831 | if (link_info.strip != strip_none) | |
832 | einfo (_("%P: `-retain-symbols-file' overrides `-s' and `-S'\n")); | |
833 | ||
5ed6aba4 | 834 | free (buf); |
252b5132 RH |
835 | link_info.strip = strip_some; |
836 | } | |
837 | \f | |
838 | /* Callbacks from the BFD linker routines. */ | |
839 | ||
840 | /* This is called when BFD has decided to include an archive member in | |
841 | a link. */ | |
842 | ||
b34976b6 | 843 | static bfd_boolean |
1579bae1 AM |
844 | add_archive_element (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
845 | bfd *abfd, | |
846 | const char *name) | |
252b5132 RH |
847 | { |
848 | lang_input_statement_type *input; | |
849 | ||
1579bae1 | 850 | input = xmalloc (sizeof (lang_input_statement_type)); |
252b5132 RH |
851 | input->filename = abfd->filename; |
852 | input->local_sym_name = abfd->filename; | |
853 | input->the_bfd = abfd; | |
854 | input->asymbols = NULL; | |
855 | input->next = NULL; | |
b34976b6 AM |
856 | input->just_syms_flag = FALSE; |
857 | input->loaded = FALSE; | |
858 | input->search_dirs_flag = FALSE; | |
252b5132 RH |
859 | |
860 | /* FIXME: The following fields are not set: header.next, | |
861 | header.type, closed, passive_position, symbol_count, | |
862 | next_real_file, is_archive, target, real. This bit of code is | |
863 | from the old decode_library_subfile function. I don't know | |
864 | whether any of those fields matters. */ | |
865 | ||
866 | ldlang_add_file (input); | |
867 | ||
1579bae1 | 868 | if (config.map_file != NULL) |
252b5132 | 869 | { |
b34976b6 | 870 | static bfd_boolean header_printed; |
252b5132 RH |
871 | struct bfd_link_hash_entry *h; |
872 | bfd *from; | |
873 | int len; | |
874 | ||
b34976b6 | 875 | h = bfd_link_hash_lookup (link_info.hash, name, FALSE, FALSE, TRUE); |
252b5132 RH |
876 | |
877 | if (h == NULL) | |
878 | from = NULL; | |
879 | else | |
880 | { | |
881 | switch (h->type) | |
882 | { | |
883 | default: | |
884 | from = NULL; | |
885 | break; | |
886 | ||
887 | case bfd_link_hash_defined: | |
888 | case bfd_link_hash_defweak: | |
889 | from = h->u.def.section->owner; | |
890 | break; | |
891 | ||
892 | case bfd_link_hash_undefined: | |
893 | case bfd_link_hash_undefweak: | |
894 | from = h->u.undef.abfd; | |
895 | break; | |
896 | ||
897 | case bfd_link_hash_common: | |
898 | from = h->u.c.p->section->owner; | |
899 | break; | |
900 | } | |
901 | } | |
902 | ||
903 | if (! header_printed) | |
904 | { | |
905 | char buf[100]; | |
906 | ||
e3c8793a | 907 | sprintf (buf, _("Archive member included because of file (symbol)\n\n")); |
252b5132 | 908 | minfo ("%s", buf); |
b34976b6 | 909 | header_printed = TRUE; |
252b5132 RH |
910 | } |
911 | ||
912 | if (bfd_my_archive (abfd) == NULL) | |
913 | { | |
914 | minfo ("%s", bfd_get_filename (abfd)); | |
915 | len = strlen (bfd_get_filename (abfd)); | |
916 | } | |
917 | else | |
918 | { | |
919 | minfo ("%s(%s)", bfd_get_filename (bfd_my_archive (abfd)), | |
920 | bfd_get_filename (abfd)); | |
921 | len = (strlen (bfd_get_filename (bfd_my_archive (abfd))) | |
922 | + strlen (bfd_get_filename (abfd)) | |
923 | + 2); | |
924 | } | |
925 | ||
926 | if (len >= 29) | |
927 | { | |
928 | print_nl (); | |
929 | len = 0; | |
930 | } | |
931 | while (len < 30) | |
932 | { | |
933 | print_space (); | |
934 | ++len; | |
935 | } | |
936 | ||
937 | if (from != NULL) | |
938 | minfo ("%B ", from); | |
939 | if (h != NULL) | |
940 | minfo ("(%T)\n", h->root.string); | |
941 | else | |
942 | minfo ("(%s)\n", name); | |
943 | } | |
944 | ||
945 | if (trace_files || trace_file_tries) | |
946 | info_msg ("%I\n", input); | |
947 | ||
b34976b6 | 948 | return TRUE; |
252b5132 RH |
949 | } |
950 | ||
951 | /* This is called when BFD has discovered a symbol which is defined | |
952 | multiple times. */ | |
953 | ||
b34976b6 | 954 | static bfd_boolean |
1579bae1 AM |
955 | multiple_definition (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
956 | const char *name, | |
957 | bfd *obfd, | |
958 | asection *osec, | |
959 | bfd_vma oval, | |
960 | bfd *nbfd, | |
961 | asection *nsec, | |
962 | bfd_vma nval) | |
252b5132 RH |
963 | { |
964 | /* If either section has the output_section field set to | |
965 | bfd_abs_section_ptr, it means that the section is being | |
966 | discarded, and this is not really a multiple definition at all. | |
967 | FIXME: It would be cleaner to somehow ignore symbols defined in | |
968 | sections which are being discarded. */ | |
969 | if ((osec->output_section != NULL | |
970 | && ! bfd_is_abs_section (osec) | |
971 | && bfd_is_abs_section (osec->output_section)) | |
972 | || (nsec->output_section != NULL | |
973 | && ! bfd_is_abs_section (nsec) | |
974 | && bfd_is_abs_section (nsec->output_section))) | |
b34976b6 | 975 | return TRUE; |
252b5132 RH |
976 | |
977 | einfo (_("%X%C: multiple definition of `%T'\n"), | |
978 | nbfd, nsec, nval, name); | |
1579bae1 | 979 | if (obfd != NULL) |
252b5132 | 980 | einfo (_("%D: first defined here\n"), obfd, osec, oval); |
9b14b192 NC |
981 | |
982 | if (command_line.relax) | |
983 | { | |
984 | einfo (_("%P: Disabling relaxation: it will not work with multiple definitions\n")); | |
985 | command_line.relax = 0; | |
986 | } | |
6d5e62f8 | 987 | |
b34976b6 | 988 | return TRUE; |
252b5132 RH |
989 | } |
990 | ||
991 | /* This is called when there is a definition of a common symbol, or | |
992 | when a common symbol is found for a symbol that is already defined, | |
993 | or when two common symbols are found. We only do something if | |
994 | -warn-common was used. */ | |
995 | ||
b34976b6 | 996 | static bfd_boolean |
1579bae1 AM |
997 | multiple_common (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
998 | const char *name, | |
999 | bfd *obfd, | |
1000 | enum bfd_link_hash_type otype, | |
1001 | bfd_vma osize, | |
1002 | bfd *nbfd, | |
1003 | enum bfd_link_hash_type ntype, | |
1004 | bfd_vma nsize) | |
252b5132 RH |
1005 | { |
1006 | if (! config.warn_common) | |
b34976b6 | 1007 | return TRUE; |
252b5132 RH |
1008 | |
1009 | if (ntype == bfd_link_hash_defined | |
1010 | || ntype == bfd_link_hash_defweak | |
1011 | || ntype == bfd_link_hash_indirect) | |
1012 | { | |
1013 | ASSERT (otype == bfd_link_hash_common); | |
1014 | einfo (_("%B: warning: definition of `%T' overriding common\n"), | |
1015 | nbfd, name); | |
1016 | if (obfd != NULL) | |
1017 | einfo (_("%B: warning: common is here\n"), obfd); | |
1018 | } | |
1019 | else if (otype == bfd_link_hash_defined | |
1020 | || otype == bfd_link_hash_defweak | |
1021 | || otype == bfd_link_hash_indirect) | |
1022 | { | |
1023 | ASSERT (ntype == bfd_link_hash_common); | |
1024 | einfo (_("%B: warning: common of `%T' overridden by definition\n"), | |
1025 | nbfd, name); | |
1026 | if (obfd != NULL) | |
1027 | einfo (_("%B: warning: defined here\n"), obfd); | |
1028 | } | |
1029 | else | |
1030 | { | |
1031 | ASSERT (otype == bfd_link_hash_common && ntype == bfd_link_hash_common); | |
1032 | if (osize > nsize) | |
1033 | { | |
1034 | einfo (_("%B: warning: common of `%T' overridden by larger common\n"), | |
1035 | nbfd, name); | |
1036 | if (obfd != NULL) | |
1037 | einfo (_("%B: warning: larger common is here\n"), obfd); | |
1038 | } | |
1039 | else if (nsize > osize) | |
1040 | { | |
1041 | einfo (_("%B: warning: common of `%T' overriding smaller common\n"), | |
1042 | nbfd, name); | |
1043 | if (obfd != NULL) | |
1044 | einfo (_("%B: warning: smaller common is here\n"), obfd); | |
1045 | } | |
1046 | else | |
1047 | { | |
1048 | einfo (_("%B: warning: multiple common of `%T'\n"), nbfd, name); | |
1049 | if (obfd != NULL) | |
1050 | einfo (_("%B: warning: previous common is here\n"), obfd); | |
1051 | } | |
1052 | } | |
1053 | ||
b34976b6 | 1054 | return TRUE; |
252b5132 RH |
1055 | } |
1056 | ||
1057 | /* This is called when BFD has discovered a set element. H is the | |
1058 | entry in the linker hash table for the set. SECTION and VALUE | |
1059 | represent a value which should be added to the set. */ | |
1060 | ||
b34976b6 | 1061 | static bfd_boolean |
1579bae1 AM |
1062 | add_to_set (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1063 | struct bfd_link_hash_entry *h, | |
1064 | bfd_reloc_code_real_type reloc, | |
1065 | bfd *abfd, | |
1066 | asection *section, | |
1067 | bfd_vma value) | |
252b5132 RH |
1068 | { |
1069 | if (config.warn_constructors) | |
1070 | einfo (_("%P: warning: global constructor %s used\n"), | |
1071 | h->root.string); | |
1072 | ||
1073 | if (! config.build_constructors) | |
b34976b6 | 1074 | return TRUE; |
252b5132 | 1075 | |
1579bae1 | 1076 | ldctor_add_set_entry (h, reloc, NULL, section, value); |
252b5132 RH |
1077 | |
1078 | if (h->type == bfd_link_hash_new) | |
1079 | { | |
1080 | h->type = bfd_link_hash_undefined; | |
1081 | h->u.undef.abfd = abfd; | |
1082 | /* We don't call bfd_link_add_undef to add this to the list of | |
1083 | undefined symbols because we are going to define it | |
1084 | ourselves. */ | |
1085 | } | |
1086 | ||
b34976b6 | 1087 | return TRUE; |
252b5132 RH |
1088 | } |
1089 | ||
1090 | /* This is called when BFD has discovered a constructor. This is only | |
1091 | called for some object file formats--those which do not handle | |
1092 | constructors in some more clever fashion. This is similar to | |
1093 | adding an element to a set, but less general. */ | |
1094 | ||
b34976b6 | 1095 | static bfd_boolean |
1579bae1 AM |
1096 | constructor_callback (struct bfd_link_info *info, |
1097 | bfd_boolean constructor, | |
1098 | const char *name, | |
1099 | bfd *abfd, | |
1100 | asection *section, | |
1101 | bfd_vma value) | |
252b5132 RH |
1102 | { |
1103 | char *s; | |
1104 | struct bfd_link_hash_entry *h; | |
1105 | char set_name[1 + sizeof "__CTOR_LIST__"]; | |
1106 | ||
1107 | if (config.warn_constructors) | |
1108 | einfo (_("%P: warning: global constructor %s used\n"), name); | |
1109 | ||
1110 | if (! config.build_constructors) | |
b34976b6 | 1111 | return TRUE; |
252b5132 RH |
1112 | |
1113 | /* Ensure that BFD_RELOC_CTOR exists now, so that we can give a | |
1114 | useful error message. */ | |
1115 | if (bfd_reloc_type_lookup (output_bfd, BFD_RELOC_CTOR) == NULL | |
1049f94e | 1116 | && (link_info.relocatable |
252b5132 RH |
1117 | || bfd_reloc_type_lookup (abfd, BFD_RELOC_CTOR) == NULL)) |
1118 | einfo (_("%P%F: BFD backend error: BFD_RELOC_CTOR unsupported\n")); | |
1119 | ||
1120 | s = set_name; | |
1121 | if (bfd_get_symbol_leading_char (abfd) != '\0') | |
1122 | *s++ = bfd_get_symbol_leading_char (abfd); | |
1123 | if (constructor) | |
1124 | strcpy (s, "__CTOR_LIST__"); | |
1125 | else | |
1126 | strcpy (s, "__DTOR_LIST__"); | |
1127 | ||
b34976b6 | 1128 | h = bfd_link_hash_lookup (info->hash, set_name, TRUE, TRUE, TRUE); |
252b5132 RH |
1129 | if (h == (struct bfd_link_hash_entry *) NULL) |
1130 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); | |
1131 | if (h->type == bfd_link_hash_new) | |
1132 | { | |
1133 | h->type = bfd_link_hash_undefined; | |
1134 | h->u.undef.abfd = abfd; | |
1135 | /* We don't call bfd_link_add_undef to add this to the list of | |
1136 | undefined symbols because we are going to define it | |
1137 | ourselves. */ | |
1138 | } | |
1139 | ||
1140 | ldctor_add_set_entry (h, BFD_RELOC_CTOR, name, section, value); | |
b34976b6 | 1141 | return TRUE; |
252b5132 RH |
1142 | } |
1143 | ||
1144 | /* A structure used by warning_callback to pass information through | |
1145 | bfd_map_over_sections. */ | |
1146 | ||
0125cdf2 NC |
1147 | struct warning_callback_info |
1148 | { | |
b34976b6 | 1149 | bfd_boolean found; |
252b5132 RH |
1150 | const char *warning; |
1151 | const char *symbol; | |
1152 | asymbol **asymbols; | |
1153 | }; | |
1154 | ||
1155 | /* This is called when there is a reference to a warning symbol. */ | |
1156 | ||
b34976b6 | 1157 | static bfd_boolean |
1579bae1 AM |
1158 | warning_callback (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1159 | const char *warning, | |
1160 | const char *symbol, | |
1161 | bfd *abfd, | |
1162 | asection *section, | |
1163 | bfd_vma address) | |
252b5132 RH |
1164 | { |
1165 | /* This is a hack to support warn_multiple_gp. FIXME: This should | |
1166 | have a cleaner interface, but what? */ | |
1167 | if (! config.warn_multiple_gp | |
1168 | && strcmp (warning, "using multiple gp values") == 0) | |
b34976b6 | 1169 | return TRUE; |
252b5132 RH |
1170 | |
1171 | if (section != NULL) | |
1172 | einfo ("%C: %s\n", abfd, section, address, warning); | |
1173 | else if (abfd == NULL) | |
1174 | einfo ("%P: %s\n", warning); | |
1175 | else if (symbol == NULL) | |
1176 | einfo ("%B: %s\n", abfd, warning); | |
1177 | else | |
1178 | { | |
1179 | lang_input_statement_type *entry; | |
1180 | asymbol **asymbols; | |
1181 | struct warning_callback_info info; | |
1182 | ||
1183 | /* Look through the relocs to see if we can find a plausible | |
1184 | address. */ | |
252b5132 RH |
1185 | entry = (lang_input_statement_type *) abfd->usrdata; |
1186 | if (entry != NULL && entry->asymbols != NULL) | |
1187 | asymbols = entry->asymbols; | |
1188 | else | |
1189 | { | |
1190 | long symsize; | |
1191 | long symbol_count; | |
1192 | ||
1193 | symsize = bfd_get_symtab_upper_bound (abfd); | |
1194 | if (symsize < 0) | |
1195 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
1579bae1 | 1196 | asymbols = xmalloc (symsize); |
252b5132 RH |
1197 | symbol_count = bfd_canonicalize_symtab (abfd, asymbols); |
1198 | if (symbol_count < 0) | |
1199 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
1200 | if (entry != NULL) | |
1201 | { | |
1202 | entry->asymbols = asymbols; | |
1203 | entry->symbol_count = symbol_count; | |
1204 | } | |
1205 | } | |
1206 | ||
b34976b6 | 1207 | info.found = FALSE; |
252b5132 RH |
1208 | info.warning = warning; |
1209 | info.symbol = symbol; | |
1210 | info.asymbols = asymbols; | |
1579bae1 | 1211 | bfd_map_over_sections (abfd, warning_find_reloc, &info); |
252b5132 RH |
1212 | |
1213 | if (! info.found) | |
1214 | einfo ("%B: %s\n", abfd, warning); | |
1215 | ||
1216 | if (entry == NULL) | |
1217 | free (asymbols); | |
1218 | } | |
1219 | ||
b34976b6 | 1220 | return TRUE; |
252b5132 RH |
1221 | } |
1222 | ||
1223 | /* This is called by warning_callback for each section. It checks the | |
1224 | relocs of the section to see if it can find a reference to the | |
1225 | symbol which triggered the warning. If it can, it uses the reloc | |
1226 | to give an error message with a file and line number. */ | |
1227 | ||
1228 | static void | |
1579bae1 | 1229 | warning_find_reloc (bfd *abfd, asection *sec, void *iarg) |
252b5132 | 1230 | { |
1579bae1 | 1231 | struct warning_callback_info *info = iarg; |
252b5132 RH |
1232 | long relsize; |
1233 | arelent **relpp; | |
1234 | long relcount; | |
1235 | arelent **p, **pend; | |
1236 | ||
1237 | if (info->found) | |
1238 | return; | |
1239 | ||
1240 | relsize = bfd_get_reloc_upper_bound (abfd, sec); | |
1241 | if (relsize < 0) | |
1242 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1243 | if (relsize == 0) | |
1244 | return; | |
1245 | ||
1579bae1 | 1246 | relpp = xmalloc (relsize); |
252b5132 RH |
1247 | relcount = bfd_canonicalize_reloc (abfd, sec, relpp, info->asymbols); |
1248 | if (relcount < 0) | |
1249 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1250 | ||
1251 | p = relpp; | |
1252 | pend = p + relcount; | |
1253 | for (; p < pend && *p != NULL; p++) | |
1254 | { | |
1255 | arelent *q = *p; | |
1256 | ||
1257 | if (q->sym_ptr_ptr != NULL | |
1258 | && *q->sym_ptr_ptr != NULL | |
1259 | && strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), info->symbol) == 0) | |
1260 | { | |
1261 | /* We found a reloc for the symbol we are looking for. */ | |
1262 | einfo ("%C: %s\n", abfd, sec, q->address, info->warning); | |
b34976b6 | 1263 | info->found = TRUE; |
252b5132 RH |
1264 | break; |
1265 | } | |
1266 | } | |
1267 | ||
1268 | free (relpp); | |
1269 | } | |
1270 | ||
1271 | /* This is called when an undefined symbol is found. */ | |
1272 | ||
b34976b6 | 1273 | static bfd_boolean |
1579bae1 AM |
1274 | undefined_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1275 | const char *name, | |
1276 | bfd *abfd, | |
1277 | asection *section, | |
1278 | bfd_vma address, | |
0b28295d | 1279 | bfd_boolean error) |
252b5132 RH |
1280 | { |
1281 | static char *error_name; | |
1282 | static unsigned int error_count; | |
1283 | ||
1284 | #define MAX_ERRORS_IN_A_ROW 5 | |
1285 | ||
1286 | if (config.warn_once) | |
1287 | { | |
1288 | static struct bfd_hash_table *hash; | |
1289 | ||
1290 | /* Only warn once about a particular undefined symbol. */ | |
252b5132 RH |
1291 | if (hash == NULL) |
1292 | { | |
1579bae1 | 1293 | hash = xmalloc (sizeof (struct bfd_hash_table)); |
252b5132 RH |
1294 | if (! bfd_hash_table_init (hash, bfd_hash_newfunc)) |
1295 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); | |
1296 | } | |
1297 | ||
b34976b6 AM |
1298 | if (bfd_hash_lookup (hash, name, FALSE, FALSE) != NULL) |
1299 | return TRUE; | |
252b5132 | 1300 | |
b34976b6 | 1301 | if (bfd_hash_lookup (hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
1302 | einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); |
1303 | } | |
1304 | ||
1305 | /* We never print more than a reasonable number of errors in a row | |
1306 | for a single symbol. */ | |
1579bae1 | 1307 | if (error_name != NULL |
252b5132 RH |
1308 | && strcmp (name, error_name) == 0) |
1309 | ++error_count; | |
1310 | else | |
1311 | { | |
1312 | error_count = 0; | |
1579bae1 | 1313 | if (error_name != NULL) |
252b5132 | 1314 | free (error_name); |
d1b2b2dc | 1315 | error_name = xstrdup (name); |
252b5132 RH |
1316 | } |
1317 | ||
1318 | if (section != NULL) | |
1319 | { | |
1320 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1321 | { |
0b28295d ILT |
1322 | if (error) |
1323 | einfo (_("%X%C: undefined reference to `%T'\n"), | |
1324 | abfd, section, address, name); | |
1325 | else | |
1326 | einfo (_("%C: warning: undefined reference to `%T'\n"), | |
1327 | abfd, section, address, name); | |
b6f29aaa | 1328 | } |
252b5132 | 1329 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1330 | { |
1331 | if (error) | |
1332 | einfo (_("%X%D: more undefined references to `%T' follow\n"), | |
1333 | abfd, section, address, name); | |
1334 | else | |
1335 | einfo (_("%D: warning: more undefined references to `%T' follow\n"), | |
1336 | abfd, section, address, name); | |
1337 | } | |
1338 | else if (error) | |
1339 | einfo ("%X"); | |
252b5132 RH |
1340 | } |
1341 | else | |
1342 | { | |
1343 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1344 | { |
0b28295d ILT |
1345 | if (error) |
1346 | einfo (_("%X%B: undefined reference to `%T'\n"), | |
1347 | abfd, name); | |
1348 | else | |
1349 | einfo (_("%B: warning: undefined reference to `%T'\n"), | |
1350 | abfd, name); | |
b6f29aaa | 1351 | } |
252b5132 | 1352 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1353 | { |
1354 | if (error) | |
1355 | einfo (_("%X%B: more undefined references to `%T' follow\n"), | |
1356 | abfd, name); | |
1357 | else | |
1358 | einfo (_("%B: warning: more undefined references to `%T' follow\n"), | |
1359 | abfd, name); | |
1360 | } | |
1361 | else if (error) | |
1362 | einfo ("%X"); | |
252b5132 RH |
1363 | } |
1364 | ||
b34976b6 | 1365 | return TRUE; |
252b5132 RH |
1366 | } |
1367 | ||
8aae64e6 AO |
1368 | /* Counter to limit the number of relocation overflow error messages |
1369 | to print. Errors are printed as it is decremented. When it's | |
1370 | called and the counter is zero, a final message is printed | |
1371 | indicating more relocations were omitted. When it gets to -1, no | |
1372 | such errors are printed. If it's initially set to a value less | |
1373 | than -1, all such errors will be printed (--verbose does this). */ | |
1374 | ||
1375 | int overflow_cutoff_limit = 10; | |
1376 | ||
252b5132 RH |
1377 | /* This is called when a reloc overflows. */ |
1378 | ||
b34976b6 | 1379 | static bfd_boolean |
1579bae1 AM |
1380 | reloc_overflow (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1381 | const char *name, | |
1382 | const char *reloc_name, | |
1383 | bfd_vma addend, | |
1384 | bfd *abfd, | |
1385 | asection *section, | |
1386 | bfd_vma address) | |
252b5132 | 1387 | { |
8aae64e6 AO |
1388 | if (overflow_cutoff_limit == -1) |
1389 | return TRUE; | |
1390 | ||
1579bae1 | 1391 | if (abfd == NULL) |
252b5132 RH |
1392 | einfo (_("%P%X: generated")); |
1393 | else | |
1394 | einfo ("%X%C:", abfd, section, address); | |
8aae64e6 AO |
1395 | |
1396 | if (overflow_cutoff_limit >= 0 | |
1397 | && overflow_cutoff_limit-- == 0) | |
1398 | { | |
1399 | einfo (_(" additional relocation overflows omitted from the output\n")); | |
1400 | return TRUE; | |
1401 | } | |
1402 | ||
252b5132 RH |
1403 | einfo (_(" relocation truncated to fit: %s %T"), reloc_name, name); |
1404 | if (addend != 0) | |
1405 | einfo ("+%v", addend); | |
1406 | einfo ("\n"); | |
b34976b6 | 1407 | return TRUE; |
252b5132 RH |
1408 | } |
1409 | ||
1410 | /* This is called when a dangerous relocation is made. */ | |
1411 | ||
b34976b6 | 1412 | static bfd_boolean |
1579bae1 AM |
1413 | reloc_dangerous (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1414 | const char *message, | |
1415 | bfd *abfd, | |
1416 | asection *section, | |
1417 | bfd_vma address) | |
252b5132 | 1418 | { |
1579bae1 | 1419 | if (abfd == NULL) |
252b5132 RH |
1420 | einfo (_("%P%X: generated")); |
1421 | else | |
1422 | einfo ("%X%C:", abfd, section, address); | |
1423 | einfo (_("dangerous relocation: %s\n"), message); | |
b34976b6 | 1424 | return TRUE; |
252b5132 RH |
1425 | } |
1426 | ||
1427 | /* This is called when a reloc is being generated attached to a symbol | |
1428 | that is not being output. */ | |
1429 | ||
b34976b6 | 1430 | static bfd_boolean |
1579bae1 AM |
1431 | unattached_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1432 | const char *name, | |
1433 | bfd *abfd, | |
1434 | asection *section, | |
1435 | bfd_vma address) | |
252b5132 | 1436 | { |
1579bae1 | 1437 | if (abfd == NULL) |
252b5132 RH |
1438 | einfo (_("%P%X: generated")); |
1439 | else | |
1440 | einfo ("%X%C:", abfd, section, address); | |
1441 | einfo (_(" reloc refers to symbol `%T' which is not being output\n"), name); | |
b34976b6 | 1442 | return TRUE; |
252b5132 RH |
1443 | } |
1444 | ||
1445 | /* This is called if link_info.notice_all is set, or when a symbol in | |
1446 | link_info.notice_hash is found. Symbols are put in notice_hash | |
1447 | using the -y option. */ | |
1448 | ||
b34976b6 | 1449 | static bfd_boolean |
1579bae1 AM |
1450 | notice (struct bfd_link_info *info, |
1451 | const char *name, | |
1452 | bfd *abfd, | |
1453 | asection *section, | |
1454 | bfd_vma value) | |
252b5132 RH |
1455 | { |
1456 | if (! info->notice_all | |
1457 | || (info->notice_hash != NULL | |
b34976b6 | 1458 | && bfd_hash_lookup (info->notice_hash, name, FALSE, FALSE) != NULL)) |
252b5132 RH |
1459 | { |
1460 | if (bfd_is_und_section (section)) | |
1461 | einfo ("%B: reference to %s\n", abfd, name); | |
1462 | else | |
1463 | einfo ("%B: definition of %s\n", abfd, name); | |
1464 | } | |
1465 | ||
1466 | if (command_line.cref || nocrossref_list != NULL) | |
1467 | add_cref (name, abfd, section, value); | |
1468 | ||
b34976b6 | 1469 | return TRUE; |
252b5132 | 1470 | } |