Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Main program of GNU linker. |
4e5bae56 | 2 | Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
cdc0d45e | 3 | 2002, 2003 |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | Written by Steve Chamberlain steve@cygnus.com | |
6 | ||
2fa9fc65 | 7 | This file is part of GLD, the Gnu Linker. |
252b5132 | 8 | |
2fa9fc65 NC |
9 | GLD is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2, or (at your option) | |
12 | any later version. | |
252b5132 | 13 | |
2fa9fc65 NC |
14 | GLD is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
252b5132 | 18 | |
2fa9fc65 NC |
19 | You should have received a copy of the GNU General Public License |
20 | along with GLD; see the file COPYING. If not, write to the Free | |
21 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
22 | 02111-1307, USA. */ | |
252b5132 RH |
23 | |
24 | #include "bfd.h" | |
25 | #include "sysdep.h" | |
26 | #include <stdio.h> | |
3882b010 | 27 | #include "safe-ctype.h" |
252b5132 RH |
28 | #include "libiberty.h" |
29 | #include "progress.h" | |
30 | #include "bfdlink.h" | |
5af11cab | 31 | #include "filenames.h" |
252b5132 RH |
32 | |
33 | #include "ld.h" | |
34 | #include "ldmain.h" | |
35 | #include "ldmisc.h" | |
36 | #include "ldwrite.h" | |
252b5132 RH |
37 | #include "ldexp.h" |
38 | #include "ldlang.h" | |
df2a7313 | 39 | #include <ldgram.h> |
252b5132 RH |
40 | #include "ldlex.h" |
41 | #include "ldfile.h" | |
b71e2778 | 42 | #include "ldemul.h" |
252b5132 RH |
43 | #include "ldctor.h" |
44 | ||
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 | |
b34976b6 AM |
96 | /* TRUE if we should demangle symbol names. */ |
97 | bfd_boolean demangling; | |
252b5132 RH |
98 | |
99 | args_type command_line; | |
100 | ||
101 | ld_config_type config; | |
102 | ||
0125cdf2 | 103 | static char *get_emulation |
1579bae1 | 104 | (int, char **); |
0125cdf2 | 105 | static void set_scripts_dir |
1579bae1 | 106 | (void); |
0125cdf2 | 107 | static bfd_boolean add_archive_element |
1579bae1 | 108 | (struct bfd_link_info *, bfd *, const char *); |
0125cdf2 | 109 | static bfd_boolean multiple_definition |
1579bae1 AM |
110 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma, |
111 | bfd *, asection *, bfd_vma); | |
0125cdf2 | 112 | static bfd_boolean multiple_common |
1579bae1 AM |
113 | (struct bfd_link_info *, const char *, bfd *, enum bfd_link_hash_type, |
114 | bfd_vma, bfd *, enum bfd_link_hash_type, bfd_vma); | |
0125cdf2 | 115 | static bfd_boolean add_to_set |
1579bae1 AM |
116 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
117 | bfd_reloc_code_real_type, bfd *, asection *, bfd_vma); | |
0125cdf2 | 118 | static bfd_boolean constructor_callback |
1579bae1 AM |
119 | (struct bfd_link_info *, bfd_boolean, const char *, bfd *, |
120 | asection *, bfd_vma); | |
0125cdf2 | 121 | static bfd_boolean warning_callback |
1579bae1 AM |
122 | (struct bfd_link_info *, const char *, const char *, bfd *, |
123 | asection *, bfd_vma); | |
0125cdf2 | 124 | static void warning_find_reloc |
1579bae1 | 125 | (bfd *, asection *, void *); |
0125cdf2 | 126 | static bfd_boolean undefined_symbol |
1579bae1 AM |
127 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma, |
128 | bfd_boolean); | |
0125cdf2 | 129 | static bfd_boolean reloc_overflow |
1579bae1 AM |
130 | (struct bfd_link_info *, const char *, const char *, bfd_vma, |
131 | bfd *, asection *, bfd_vma); | |
0125cdf2 | 132 | static bfd_boolean reloc_dangerous |
1579bae1 | 133 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
0125cdf2 | 134 | static bfd_boolean unattached_reloc |
1579bae1 | 135 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
0125cdf2 | 136 | static bfd_boolean notice |
1579bae1 | 137 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
0125cdf2 NC |
138 | |
139 | static struct bfd_link_callbacks link_callbacks = | |
140 | { | |
252b5132 RH |
141 | add_archive_element, |
142 | multiple_definition, | |
143 | multiple_common, | |
144 | add_to_set, | |
145 | constructor_callback, | |
146 | warning_callback, | |
147 | undefined_symbol, | |
148 | reloc_overflow, | |
149 | reloc_dangerous, | |
150 | unattached_reloc, | |
0f0569c4 L |
151 | notice, |
152 | error_handler | |
252b5132 RH |
153 | }; |
154 | ||
155 | struct bfd_link_info link_info; | |
156 | \f | |
157 | static void | |
1579bae1 | 158 | remove_output (void) |
252b5132 | 159 | { |
6d5e62f8 | 160 | if (output_filename) |
252b5132 RH |
161 | { |
162 | if (output_bfd && output_bfd->iostream) | |
6d5e62f8 | 163 | fclose ((FILE *) (output_bfd->iostream)); |
252b5132 RH |
164 | if (delete_output_file_on_failure) |
165 | unlink (output_filename); | |
166 | } | |
167 | } | |
168 | ||
169 | int | |
1579bae1 | 170 | main (int argc, char **argv) |
252b5132 RH |
171 | { |
172 | char *emulation; | |
173 | long start_time = get_run_time (); | |
174 | ||
175 | #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) | |
176 | setlocale (LC_MESSAGES, ""); | |
3882b010 L |
177 | #endif |
178 | #if defined (HAVE_SETLOCALE) | |
179 | setlocale (LC_CTYPE, ""); | |
252b5132 RH |
180 | #endif |
181 | bindtextdomain (PACKAGE, LOCALEDIR); | |
182 | textdomain (PACKAGE); | |
183 | ||
184 | program_name = argv[0]; | |
185 | xmalloc_set_program_name (program_name); | |
186 | ||
187 | START_PROGRESS (program_name, 0); | |
188 | ||
189 | bfd_init (); | |
190 | ||
191 | bfd_set_error_program_name (program_name); | |
192 | ||
193 | xatexit (remove_output); | |
194 | ||
9c8ebd6a DJ |
195 | #ifdef TARGET_SYSTEM_ROOT_RELOCATABLE |
196 | ld_sysroot = make_relative_prefix (program_name, BINDIR, | |
197 | TARGET_SYSTEM_ROOT); | |
0125cdf2 | 198 | |
9c8ebd6a DJ |
199 | if (ld_sysroot) |
200 | { | |
201 | struct stat s; | |
202 | int res = stat (ld_sysroot, &s) == 0 && S_ISDIR (s.st_mode); | |
0125cdf2 | 203 | |
9c8ebd6a DJ |
204 | if (!res) |
205 | { | |
206 | free (ld_sysroot); | |
0125cdf2 | 207 | ld_sysroot = NULL; |
9c8ebd6a DJ |
208 | } |
209 | } | |
0125cdf2 NC |
210 | |
211 | if (! ld_sysroot) | |
212 | { | |
213 | ld_sysroot = make_relative_prefix (program_name, TOOLBINDIR, | |
214 | TARGET_SYSTEM_ROOT); | |
215 | ||
216 | if (ld_sysroot) | |
217 | { | |
218 | struct stat s; | |
219 | int res = stat (ld_sysroot, &s) == 0 && S_ISDIR (s.st_mode); | |
220 | ||
221 | if (!res) | |
222 | { | |
223 | free (ld_sysroot); | |
224 | ld_sysroot = NULL; | |
225 | } | |
226 | } | |
227 | } | |
228 | ||
229 | if (! ld_sysroot) | |
9c8ebd6a | 230 | #endif |
0125cdf2 | 231 | ld_sysroot = TARGET_SYSTEM_ROOT; |
9c8ebd6a | 232 | |
3fe38064 NC |
233 | if (ld_sysroot && *ld_sysroot) |
234 | ld_canon_sysroot = lrealpath (ld_sysroot); | |
235 | ||
236 | if (ld_canon_sysroot) | |
237 | ld_canon_sysroot_len = strlen (ld_canon_sysroot); | |
238 | else | |
239 | ld_canon_sysroot_len = -1; | |
240 | ||
252b5132 RH |
241 | /* Set the default BFD target based on the configured target. Doing |
242 | this permits the linker to be configured for a particular target, | |
243 | and linked against a shared BFD library which was configured for | |
244 | a different target. The macro TARGET is defined by Makefile. */ | |
245 | if (! bfd_set_default_target (TARGET)) | |
246 | { | |
247 | einfo (_("%X%P: can't set BFD default target to `%s': %E\n"), TARGET); | |
248 | xexit (1); | |
249 | } | |
250 | ||
b47c4208 AM |
251 | #if YYDEBUG |
252 | { | |
253 | extern int yydebug; | |
254 | yydebug = 1; | |
255 | } | |
256 | #endif | |
257 | ||
252b5132 | 258 | /* Initialize the data about options. */ |
b34976b6 AM |
259 | trace_files = trace_file_tries = version_printed = FALSE; |
260 | whole_archive = FALSE; | |
261 | config.build_constructors = TRUE; | |
262 | config.dynamic_link = FALSE; | |
263 | config.has_shared = FALSE; | |
a854a4a7 AM |
264 | config.split_by_reloc = (unsigned) -1; |
265 | config.split_by_file = (bfd_size_type) -1; | |
b34976b6 AM |
266 | command_line.force_common_definition = FALSE; |
267 | command_line.inhibit_common_definition = FALSE; | |
252b5132 RH |
268 | command_line.interpreter = NULL; |
269 | command_line.rpath = NULL; | |
b34976b6 AM |
270 | command_line.warn_mismatch = TRUE; |
271 | command_line.check_section_addresses = TRUE; | |
312b768e | 272 | command_line.accept_unknown_input_arch = FALSE; |
252b5132 RH |
273 | |
274 | /* We initialize DEMANGLING based on the environment variable | |
275 | COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the | |
276 | output of the linker, unless COLLECT_NO_DEMANGLE is set in the | |
277 | environment. Acting the same way here lets us provide the same | |
278 | interface by default. */ | |
279 | demangling = getenv ("COLLECT_NO_DEMANGLE") == NULL; | |
280 | ||
1049f94e | 281 | link_info.relocatable = FALSE; |
b34976b6 | 282 | link_info.emitrelocations = FALSE; |
b5067602 | 283 | link_info.task_link = FALSE; |
b34976b6 | 284 | link_info.shared = FALSE; |
36af4a4e JJ |
285 | link_info.pie = FALSE; |
286 | link_info.executable = FALSE; | |
b34976b6 AM |
287 | link_info.symbolic = FALSE; |
288 | link_info.export_dynamic = FALSE; | |
289 | link_info.static_link = FALSE; | |
290 | link_info.traditional_format = FALSE; | |
291 | link_info.optimize = FALSE; | |
560e09e9 NC |
292 | link_info.unresolved_syms_in_objects = RM_NOT_YET_SET; |
293 | link_info.unresolved_syms_in_shared_libs = RM_NOT_YET_SET; | |
b34976b6 AM |
294 | link_info.allow_multiple_definition = FALSE; |
295 | link_info.allow_undefined_version = TRUE; | |
b5067602 AM |
296 | link_info.keep_memory = TRUE; |
297 | link_info.notice_all = FALSE; | |
298 | link_info.nocopyreloc = FALSE; | |
299 | link_info.new_dtags = FALSE; | |
300 | link_info.combreloc = TRUE; | |
301 | link_info.eh_frame_hdr = FALSE; | |
d5cd3933 | 302 | link_info.strip_discarded = TRUE; |
252b5132 | 303 | link_info.strip = strip_none; |
f5fa8ca2 | 304 | link_info.discard = discard_sec_merge; |
b5067602 AM |
305 | link_info.common_skip_ar_aymbols = bfd_link_common_skip_none; |
306 | link_info.callbacks = &link_callbacks; | |
252b5132 RH |
307 | link_info.hash = NULL; |
308 | link_info.keep_hash = NULL; | |
252b5132 RH |
309 | link_info.notice_hash = NULL; |
310 | link_info.wrap_hash = NULL; | |
b5067602 AM |
311 | link_info.input_bfds = NULL; |
312 | link_info.create_object_symbols_section = NULL; | |
313 | link_info.gc_sym_list = NULL; | |
314 | link_info.base_file = NULL; | |
3dbf70a2 MM |
315 | /* SVR4 linkers seem to set DT_INIT and DT_FINI based on magic _init |
316 | and _fini symbols. We are compatible. */ | |
317 | link_info.init_function = "_init"; | |
318 | link_info.fini_function = "_fini"; | |
b5067602 | 319 | link_info.mpc860c0 = 0; |
e0076ab3 | 320 | link_info.pei386_auto_import = -1; |
b34976b6 | 321 | link_info.pei386_runtime_pseudo_reloc = FALSE; |
db6751f2 | 322 | link_info.spare_dynamic_tags = 5; |
1579bae1 AM |
323 | link_info.flags = 0; |
324 | link_info.flags_1 = 0; | |
c7996ad6 | 325 | link_info.relax_finalizing = FALSE; |
3dbf70a2 | 326 | |
252b5132 RH |
327 | ldfile_add_arch (""); |
328 | ||
b34976b6 AM |
329 | config.make_executable = TRUE; |
330 | force_make_executable = FALSE; | |
331 | config.magic_demand_paged = TRUE; | |
332 | config.text_read_only = TRUE; | |
252b5132 RH |
333 | |
334 | emulation = get_emulation (argc, argv); | |
335 | ldemul_choose_mode (emulation); | |
742aeb63 | 336 | default_target = ldemul_choose_target (argc, argv); |
252b5132 RH |
337 | lang_init (); |
338 | ldemul_before_parse (); | |
b34976b6 | 339 | lang_has_input_file = FALSE; |
252b5132 RH |
340 | parse_args (argc, argv); |
341 | ||
342 | ldemul_set_symbols (); | |
343 | ||
1049f94e | 344 | if (link_info.relocatable) |
252b5132 RH |
345 | { |
346 | if (command_line.gc_sections) | |
347 | einfo ("%P%F: --gc-sections and -r may not be used together\n"); | |
348 | if (link_info.mpc860c0) | |
349 | einfo (_("%P%F: -r and --mpc860c0 may not be used together\n")); | |
350 | else if (command_line.relax) | |
351 | einfo (_("%P%F: --relax and -r may not be used together\n")); | |
352 | if (link_info.shared) | |
353 | einfo (_("%P%F: -r and -shared may not be used together\n")); | |
354 | } | |
355 | ||
7333607e JJ |
356 | if (! link_info.shared) |
357 | { | |
358 | if (command_line.filter_shlib) | |
e97cb84f | 359 | einfo (_("%P%F: -F may not be used without -shared\n")); |
7333607e | 360 | if (command_line.auxiliary_filters) |
e97cb84f | 361 | einfo (_("%P%F: -f may not be used without -shared\n")); |
7333607e JJ |
362 | } |
363 | ||
36af4a4e JJ |
364 | if (! link_info.shared || link_info.pie) |
365 | link_info.executable = TRUE; | |
366 | ||
252b5132 RH |
367 | /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I |
368 | don't see how else this can be handled, since in this case we | |
369 | must preserve all externally visible symbols. */ | |
1049f94e | 370 | if (link_info.relocatable && link_info.strip == strip_all) |
252b5132 RH |
371 | { |
372 | link_info.strip = strip_debugger; | |
f5fa8ca2 | 373 | if (link_info.discard == discard_sec_merge) |
252b5132 RH |
374 | link_info.discard = discard_all; |
375 | } | |
376 | ||
377 | /* This essentially adds another -L directory so this must be done after | |
378 | the -L's in argv have been processed. */ | |
379 | set_scripts_dir (); | |
380 | ||
b9a8de1e NC |
381 | /* If we have not already opened and parsed a linker script |
382 | read the emulation's appropriate default script. */ | |
b90e1c6f | 383 | if (saved_script_handle == NULL) |
252b5132 | 384 | { |
252b5132 | 385 | int isfile; |
b7a26f91 | 386 | char *s = ldemul_get_script (&isfile); |
252b5132 RH |
387 | |
388 | if (isfile) | |
389 | ldfile_open_command_file (s); | |
390 | else | |
b7a26f91 | 391 | { |
252b5132 RH |
392 | lex_string = s; |
393 | lex_redirect (s); | |
394 | } | |
395 | parser_input = input_script; | |
396 | yyparse (); | |
397 | lex_string = NULL; | |
398 | } | |
399 | ||
b9a8de1e NC |
400 | if (trace_file_tries) |
401 | { | |
9cb61eab AM |
402 | if (saved_script_handle) |
403 | info_msg (_("using external linker script:")); | |
404 | else | |
405 | info_msg (_("using internal linker script:")); | |
406 | info_msg ("\n==================================================\n"); | |
b9a8de1e NC |
407 | |
408 | if (saved_script_handle) | |
409 | { | |
74699268 | 410 | static const int ld_bufsz = 8193; |
b9a8de1e | 411 | size_t n; |
74699268 | 412 | char *buf = xmalloc (ld_bufsz); |
b9a8de1e NC |
413 | |
414 | rewind (saved_script_handle); | |
74699268 | 415 | while ((n = fread (buf, 1, ld_bufsz - 1, saved_script_handle)) > 0) |
b9a8de1e | 416 | { |
b7a26f91 | 417 | buf[n] = 0; |
b9a8de1e NC |
418 | info_msg (buf); |
419 | } | |
420 | rewind (saved_script_handle); | |
421 | free (buf); | |
422 | } | |
423 | else | |
424 | { | |
425 | int isfile; | |
426 | ||
b7a26f91 | 427 | info_msg (ldemul_get_script (&isfile)); |
b9a8de1e | 428 | } |
b7a26f91 | 429 | |
b9a8de1e NC |
430 | info_msg ("\n==================================================\n"); |
431 | } | |
432 | ||
252b5132 RH |
433 | lang_final (); |
434 | ||
b34976b6 | 435 | if (!lang_has_input_file) |
252b5132 RH |
436 | { |
437 | if (version_printed) | |
438 | xexit (0); | |
439 | einfo (_("%P%F: no input files\n")); | |
440 | } | |
441 | ||
442 | if (trace_files) | |
0125cdf2 | 443 | info_msg (_("%P: mode %s\n"), emulation); |
252b5132 RH |
444 | |
445 | ldemul_after_parse (); | |
446 | ||
252b5132 RH |
447 | if (config.map_filename) |
448 | { | |
449 | if (strcmp (config.map_filename, "-") == 0) | |
450 | { | |
451 | config.map_file = stdout; | |
452 | } | |
453 | else | |
454 | { | |
455 | config.map_file = fopen (config.map_filename, FOPEN_WT); | |
456 | if (config.map_file == (FILE *) NULL) | |
457 | { | |
458 | bfd_set_error (bfd_error_system_call); | |
459 | einfo (_("%P%F: cannot open map file %s: %E\n"), | |
460 | config.map_filename); | |
461 | } | |
462 | } | |
463 | } | |
464 | ||
252b5132 RH |
465 | lang_process (); |
466 | ||
467 | /* Print error messages for any missing symbols, for any warning | |
6d5e62f8 | 468 | symbols, and possibly multiple definitions. */ |
1049f94e | 469 | if (link_info.relocatable) |
252b5132 RH |
470 | output_bfd->flags &= ~EXEC_P; |
471 | else | |
472 | output_bfd->flags |= EXEC_P; | |
473 | ||
474 | ldwrite (); | |
475 | ||
476 | if (config.map_file != NULL) | |
477 | lang_map (); | |
478 | if (command_line.cref) | |
479 | output_cref (config.map_file != NULL ? config.map_file : stdout); | |
480 | if (nocrossref_list != NULL) | |
481 | check_nocrossrefs (); | |
482 | ||
1049f94e | 483 | /* Even if we're producing relocatable output, some non-fatal errors should |
252b5132 | 484 | be reported in the exit status. (What non-fatal errors, if any, do we |
1049f94e | 485 | want to ignore for relocatable output?) */ |
b34976b6 | 486 | if (!config.make_executable && !force_make_executable) |
252b5132 | 487 | { |
b34976b6 | 488 | if (trace_files) |
0125cdf2 NC |
489 | einfo (_("%P: link errors found, deleting executable `%s'\n"), |
490 | output_filename); | |
252b5132 RH |
491 | |
492 | /* The file will be removed by remove_output. */ | |
252b5132 RH |
493 | xexit (1); |
494 | } | |
495 | else | |
496 | { | |
497 | if (! bfd_close (output_bfd)) | |
498 | einfo (_("%F%B: final close failed: %E\n"), output_bfd); | |
499 | ||
500 | /* If the --force-exe-suffix is enabled, and we're making an | |
6d5e62f8 KH |
501 | executable file and it doesn't end in .exe, copy it to one |
502 | which does. */ | |
1049f94e | 503 | if (! link_info.relocatable && command_line.force_exe_suffix) |
252b5132 RH |
504 | { |
505 | int len = strlen (output_filename); | |
0125cdf2 | 506 | |
6d5e62f8 | 507 | if (len < 4 |
252b5132 RH |
508 | || (strcasecmp (output_filename + len - 4, ".exe") != 0 |
509 | && strcasecmp (output_filename + len - 4, ".dll") != 0)) | |
510 | { | |
511 | FILE *src; | |
512 | FILE *dst; | |
513 | const int bsize = 4096; | |
514 | char *buf = xmalloc (bsize); | |
515 | int l; | |
516 | char *dst_name = xmalloc (len + 5); | |
0125cdf2 | 517 | |
252b5132 RH |
518 | strcpy (dst_name, output_filename); |
519 | strcat (dst_name, ".exe"); | |
520 | src = fopen (output_filename, FOPEN_RB); | |
521 | dst = fopen (dst_name, FOPEN_WB); | |
522 | ||
523 | if (!src) | |
1579bae1 AM |
524 | einfo (_("%X%P: unable to open for source of copy `%s'\n"), |
525 | output_filename); | |
252b5132 | 526 | if (!dst) |
1579bae1 AM |
527 | einfo (_("%X%P: unable to open for destination of copy `%s'\n"), |
528 | dst_name); | |
252b5132 RH |
529 | while ((l = fread (buf, 1, bsize, src)) > 0) |
530 | { | |
531 | int done = fwrite (buf, 1, l, dst); | |
0125cdf2 | 532 | |
252b5132 | 533 | if (done != l) |
0125cdf2 | 534 | einfo (_("%P: Error writing file `%s'\n"), dst_name); |
252b5132 | 535 | } |
0125cdf2 | 536 | |
252b5132 RH |
537 | fclose (src); |
538 | if (fclose (dst) == EOF) | |
0125cdf2 | 539 | einfo (_("%P: Error closing file `%s'\n"), dst_name); |
252b5132 RH |
540 | free (dst_name); |
541 | free (buf); | |
542 | } | |
543 | } | |
544 | } | |
545 | ||
546 | END_PROGRESS (program_name); | |
547 | ||
548 | if (config.stats) | |
549 | { | |
550 | #ifdef HAVE_SBRK | |
1579bae1 | 551 | char *lim = sbrk (0); |
252b5132 RH |
552 | #endif |
553 | long run_time = get_run_time () - start_time; | |
554 | ||
555 | fprintf (stderr, _("%s: total time in link: %ld.%06ld\n"), | |
556 | program_name, run_time / 1000000, run_time % 1000000); | |
557 | #ifdef HAVE_SBRK | |
558 | fprintf (stderr, _("%s: data size %ld\n"), program_name, | |
559 | (long) (lim - (char *) &environ)); | |
560 | #endif | |
561 | } | |
562 | ||
563 | /* Prevent remove_output from doing anything, after a successful link. */ | |
564 | output_filename = NULL; | |
565 | ||
566 | xexit (0); | |
567 | return 0; | |
568 | } | |
569 | ||
570 | /* We need to find any explicitly given emulation in order to initialize the | |
571 | state that's needed by the lex&yacc argument parser (parse_args). */ | |
572 | ||
573 | static char * | |
1579bae1 | 574 | get_emulation (int argc, char **argv) |
252b5132 RH |
575 | { |
576 | char *emulation; | |
577 | int i; | |
578 | ||
579 | emulation = getenv (EMULATION_ENVIRON); | |
580 | if (emulation == NULL) | |
581 | emulation = DEFAULT_EMULATION; | |
582 | ||
583 | for (i = 1; i < argc; i++) | |
584 | { | |
585 | if (!strncmp (argv[i], "-m", 2)) | |
586 | { | |
587 | if (argv[i][2] == '\0') | |
588 | { | |
589 | /* -m EMUL */ | |
590 | if (i < argc - 1) | |
591 | { | |
592 | emulation = argv[i + 1]; | |
593 | i++; | |
594 | } | |
595 | else | |
0125cdf2 | 596 | einfo (_("%P%F: missing argument to -m\n")); |
252b5132 RH |
597 | } |
598 | else if (strcmp (argv[i], "-mips1") == 0 | |
599 | || strcmp (argv[i], "-mips2") == 0 | |
600 | || strcmp (argv[i], "-mips3") == 0 | |
d1cf510e | 601 | || strcmp (argv[i], "-mips4") == 0 |
6f33421c CD |
602 | || strcmp (argv[i], "-mips5") == 0 |
603 | || strcmp (argv[i], "-mips32") == 0 | |
604 | || strcmp (argv[i], "-mips32r2") == 0 | |
605 | || strcmp (argv[i], "-mips64") == 0) | |
252b5132 | 606 | { |
31d677f9 | 607 | /* FIXME: The arguments -mips1, -mips2, -mips3, etc. are |
252b5132 RH |
608 | passed to the linker by some MIPS compilers. They |
609 | generally tell the linker to use a slightly different | |
610 | library path. Perhaps someday these should be | |
611 | implemented as emulations; until then, we just ignore | |
612 | the arguments and hope that nobody ever creates | |
613 | emulations named ips1, ips2 or ips3. */ | |
614 | } | |
615 | else if (strcmp (argv[i], "-m486") == 0) | |
616 | { | |
617 | /* FIXME: The argument -m486 is passed to the linker on | |
618 | some Linux systems. Hope that nobody creates an | |
619 | emulation named 486. */ | |
620 | } | |
621 | else | |
622 | { | |
623 | /* -mEMUL */ | |
624 | emulation = &argv[i][2]; | |
625 | } | |
626 | } | |
627 | } | |
628 | ||
629 | return emulation; | |
630 | } | |
631 | ||
632 | /* If directory DIR contains an "ldscripts" subdirectory, | |
b34976b6 AM |
633 | add DIR to the library search path and return TRUE, |
634 | else return FALSE. */ | |
252b5132 | 635 | |
b34976b6 | 636 | static bfd_boolean |
1579bae1 | 637 | check_for_scripts_dir (char *dir) |
252b5132 RH |
638 | { |
639 | size_t dirlen; | |
640 | char *buf; | |
641 | struct stat s; | |
b34976b6 | 642 | bfd_boolean res; |
252b5132 RH |
643 | |
644 | dirlen = strlen (dir); | |
645 | /* sizeof counts the terminating NUL. */ | |
1579bae1 | 646 | buf = xmalloc (dirlen + sizeof ("/ldscripts")); |
252b5132 RH |
647 | sprintf (buf, "%s/ldscripts", dir); |
648 | ||
649 | res = stat (buf, &s) == 0 && S_ISDIR (s.st_mode); | |
650 | free (buf); | |
651 | if (res) | |
b34976b6 | 652 | ldfile_add_library_path (dir, FALSE); |
252b5132 RH |
653 | return res; |
654 | } | |
655 | ||
656 | /* Set the default directory for finding script files. | |
657 | Libraries will be searched for here too, but that's ok. | |
658 | We look for the "ldscripts" directory in: | |
659 | ||
cdc0d45e DJ |
660 | SCRIPTDIR (passed from Makefile) |
661 | (adjusted according to the current location of the binary) | |
252b5132 RH |
662 | SCRIPTDIR (passed from Makefile) |
663 | the dir where this program is (for using it from the build tree) | |
cdc0d45e | 664 | the dir where this program is/../lib |
0125cdf2 | 665 | (for installing the tool suite elsewhere). */ |
252b5132 RH |
666 | |
667 | static void | |
1579bae1 | 668 | set_scripts_dir (void) |
252b5132 RH |
669 | { |
670 | char *end, *dir; | |
671 | size_t dirlen; | |
5ed6aba4 | 672 | bfd_boolean found; |
252b5132 | 673 | |
cdc0d45e | 674 | dir = make_relative_prefix (program_name, BINDIR, SCRIPTDIR); |
cdc0d45e | 675 | if (dir) |
5ed6aba4 NC |
676 | { |
677 | found = check_for_scripts_dir (dir); | |
678 | free (dir); | |
679 | if (found) | |
680 | return; | |
681 | } | |
cdc0d45e | 682 | |
4ca1b790 | 683 | dir = make_relative_prefix (program_name, TOOLBINDIR, SCRIPTDIR); |
4ca1b790 | 684 | if (dir) |
5ed6aba4 NC |
685 | { |
686 | found = check_for_scripts_dir (dir); | |
687 | free (dir); | |
688 | if (found) | |
689 | return; | |
690 | } | |
4ca1b790 | 691 | |
252b5132 | 692 | if (check_for_scripts_dir (SCRIPTDIR)) |
6d5e62f8 KH |
693 | /* We've been installed normally. */ |
694 | return; | |
252b5132 RH |
695 | |
696 | /* Look for "ldscripts" in the dir where our binary is. */ | |
697 | end = strrchr (program_name, '/'); | |
5af11cab AM |
698 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
699 | { | |
700 | /* We could have \foo\bar, or /foo\bar. */ | |
701 | char *bslash = strrchr (program_name, '\\'); | |
0125cdf2 | 702 | |
2ab47eed | 703 | if (end == NULL || (bslash != NULL && bslash > end)) |
5af11cab AM |
704 | end = bslash; |
705 | } | |
706 | #endif | |
252b5132 RH |
707 | |
708 | if (end == NULL) | |
0125cdf2 NC |
709 | /* Don't look for ldscripts in the current directory. There is |
710 | too much potential for confusion. */ | |
711 | return; | |
252b5132 RH |
712 | |
713 | dirlen = end - program_name; | |
714 | /* Make a copy of program_name in dir. | |
715 | Leave room for later "/../lib". */ | |
1579bae1 | 716 | dir = xmalloc (dirlen + 8); |
252b5132 RH |
717 | strncpy (dir, program_name, dirlen); |
718 | dir[dirlen] = '\0'; | |
719 | ||
720 | if (check_for_scripts_dir (dir)) | |
5ed6aba4 NC |
721 | { |
722 | free (dir); | |
723 | return; | |
724 | } | |
252b5132 RH |
725 | |
726 | /* Look for "ldscripts" in <the dir where our binary is>/../lib. */ | |
727 | strcpy (dir + dirlen, "/../lib"); | |
5ed6aba4 | 728 | check_for_scripts_dir (dir); |
6d5e62f8 | 729 | free (dir); |
252b5132 RH |
730 | } |
731 | ||
732 | void | |
1579bae1 | 733 | add_ysym (const char *name) |
252b5132 | 734 | { |
1579bae1 | 735 | if (link_info.notice_hash == NULL) |
252b5132 | 736 | { |
1579bae1 | 737 | link_info.notice_hash = xmalloc (sizeof (struct bfd_hash_table)); |
252b5132 RH |
738 | if (! bfd_hash_table_init_n (link_info.notice_hash, |
739 | bfd_hash_newfunc, | |
740 | 61)) | |
741 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
6d5e62f8 | 742 | } |
252b5132 | 743 | |
1579bae1 | 744 | if (bfd_hash_lookup (link_info.notice_hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
745 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); |
746 | } | |
747 | ||
748 | /* Record a symbol to be wrapped, from the --wrap option. */ | |
749 | ||
750 | void | |
1579bae1 | 751 | add_wrap (const char *name) |
252b5132 RH |
752 | { |
753 | if (link_info.wrap_hash == NULL) | |
754 | { | |
1579bae1 | 755 | link_info.wrap_hash = xmalloc (sizeof (struct bfd_hash_table)); |
252b5132 RH |
756 | if (! bfd_hash_table_init_n (link_info.wrap_hash, |
757 | bfd_hash_newfunc, | |
758 | 61)) | |
759 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
760 | } | |
0125cdf2 | 761 | |
b34976b6 | 762 | if (bfd_hash_lookup (link_info.wrap_hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
763 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); |
764 | } | |
765 | ||
766 | /* Handle the -retain-symbols-file option. */ | |
767 | ||
768 | void | |
1579bae1 | 769 | add_keepsyms_file (const char *filename) |
252b5132 RH |
770 | { |
771 | FILE *file; | |
772 | char *buf; | |
773 | size_t bufsize; | |
774 | int c; | |
775 | ||
776 | if (link_info.strip == strip_some) | |
777 | einfo (_("%X%P: error: duplicate retain-symbols-file\n")); | |
778 | ||
779 | file = fopen (filename, "r"); | |
1579bae1 | 780 | if (file == NULL) |
252b5132 RH |
781 | { |
782 | bfd_set_error (bfd_error_system_call); | |
783 | einfo ("%X%P: %s: %E\n", filename); | |
784 | return; | |
785 | } | |
786 | ||
1579bae1 | 787 | link_info.keep_hash = xmalloc (sizeof (struct bfd_hash_table)); |
252b5132 RH |
788 | if (! bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc)) |
789 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
790 | ||
791 | bufsize = 100; | |
1579bae1 | 792 | buf = xmalloc (bufsize); |
252b5132 RH |
793 | |
794 | c = getc (file); | |
795 | while (c != EOF) | |
796 | { | |
3882b010 | 797 | while (ISSPACE (c)) |
252b5132 RH |
798 | c = getc (file); |
799 | ||
800 | if (c != EOF) | |
801 | { | |
802 | size_t len = 0; | |
803 | ||
3882b010 | 804 | while (! ISSPACE (c) && c != EOF) |
252b5132 RH |
805 | { |
806 | buf[len] = c; | |
807 | ++len; | |
808 | if (len >= bufsize) | |
809 | { | |
810 | bufsize *= 2; | |
811 | buf = xrealloc (buf, bufsize); | |
812 | } | |
813 | c = getc (file); | |
814 | } | |
815 | ||
816 | buf[len] = '\0'; | |
817 | ||
1579bae1 | 818 | if (bfd_hash_lookup (link_info.keep_hash, buf, TRUE, TRUE) == NULL) |
252b5132 RH |
819 | einfo (_("%P%F: bfd_hash_lookup for insertion failed: %E\n")); |
820 | } | |
821 | } | |
822 | ||
823 | if (link_info.strip != strip_none) | |
824 | einfo (_("%P: `-retain-symbols-file' overrides `-s' and `-S'\n")); | |
825 | ||
5ed6aba4 | 826 | free (buf); |
252b5132 RH |
827 | link_info.strip = strip_some; |
828 | } | |
829 | \f | |
830 | /* Callbacks from the BFD linker routines. */ | |
831 | ||
832 | /* This is called when BFD has decided to include an archive member in | |
833 | a link. */ | |
834 | ||
b34976b6 | 835 | static bfd_boolean |
1579bae1 AM |
836 | add_archive_element (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
837 | bfd *abfd, | |
838 | const char *name) | |
252b5132 RH |
839 | { |
840 | lang_input_statement_type *input; | |
841 | ||
1579bae1 | 842 | input = xmalloc (sizeof (lang_input_statement_type)); |
252b5132 RH |
843 | input->filename = abfd->filename; |
844 | input->local_sym_name = abfd->filename; | |
845 | input->the_bfd = abfd; | |
846 | input->asymbols = NULL; | |
847 | input->next = NULL; | |
b34976b6 AM |
848 | input->just_syms_flag = FALSE; |
849 | input->loaded = FALSE; | |
850 | input->search_dirs_flag = FALSE; | |
252b5132 RH |
851 | |
852 | /* FIXME: The following fields are not set: header.next, | |
853 | header.type, closed, passive_position, symbol_count, | |
854 | next_real_file, is_archive, target, real. This bit of code is | |
855 | from the old decode_library_subfile function. I don't know | |
856 | whether any of those fields matters. */ | |
857 | ||
858 | ldlang_add_file (input); | |
859 | ||
1579bae1 | 860 | if (config.map_file != NULL) |
252b5132 | 861 | { |
b34976b6 | 862 | static bfd_boolean header_printed; |
252b5132 RH |
863 | struct bfd_link_hash_entry *h; |
864 | bfd *from; | |
865 | int len; | |
866 | ||
b34976b6 | 867 | h = bfd_link_hash_lookup (link_info.hash, name, FALSE, FALSE, TRUE); |
252b5132 RH |
868 | |
869 | if (h == NULL) | |
870 | from = NULL; | |
871 | else | |
872 | { | |
873 | switch (h->type) | |
874 | { | |
875 | default: | |
876 | from = NULL; | |
877 | break; | |
878 | ||
879 | case bfd_link_hash_defined: | |
880 | case bfd_link_hash_defweak: | |
881 | from = h->u.def.section->owner; | |
882 | break; | |
883 | ||
884 | case bfd_link_hash_undefined: | |
885 | case bfd_link_hash_undefweak: | |
886 | from = h->u.undef.abfd; | |
887 | break; | |
888 | ||
889 | case bfd_link_hash_common: | |
890 | from = h->u.c.p->section->owner; | |
891 | break; | |
892 | } | |
893 | } | |
894 | ||
895 | if (! header_printed) | |
896 | { | |
897 | char buf[100]; | |
898 | ||
e3c8793a | 899 | sprintf (buf, _("Archive member included because of file (symbol)\n\n")); |
252b5132 | 900 | minfo ("%s", buf); |
b34976b6 | 901 | header_printed = TRUE; |
252b5132 RH |
902 | } |
903 | ||
904 | if (bfd_my_archive (abfd) == NULL) | |
905 | { | |
906 | minfo ("%s", bfd_get_filename (abfd)); | |
907 | len = strlen (bfd_get_filename (abfd)); | |
908 | } | |
909 | else | |
910 | { | |
911 | minfo ("%s(%s)", bfd_get_filename (bfd_my_archive (abfd)), | |
912 | bfd_get_filename (abfd)); | |
913 | len = (strlen (bfd_get_filename (bfd_my_archive (abfd))) | |
914 | + strlen (bfd_get_filename (abfd)) | |
915 | + 2); | |
916 | } | |
917 | ||
918 | if (len >= 29) | |
919 | { | |
920 | print_nl (); | |
921 | len = 0; | |
922 | } | |
923 | while (len < 30) | |
924 | { | |
925 | print_space (); | |
926 | ++len; | |
927 | } | |
928 | ||
929 | if (from != NULL) | |
930 | minfo ("%B ", from); | |
931 | if (h != NULL) | |
932 | minfo ("(%T)\n", h->root.string); | |
933 | else | |
934 | minfo ("(%s)\n", name); | |
935 | } | |
936 | ||
937 | if (trace_files || trace_file_tries) | |
938 | info_msg ("%I\n", input); | |
939 | ||
b34976b6 | 940 | return TRUE; |
252b5132 RH |
941 | } |
942 | ||
943 | /* This is called when BFD has discovered a symbol which is defined | |
944 | multiple times. */ | |
945 | ||
b34976b6 | 946 | static bfd_boolean |
1579bae1 AM |
947 | multiple_definition (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
948 | const char *name, | |
949 | bfd *obfd, | |
950 | asection *osec, | |
951 | bfd_vma oval, | |
952 | bfd *nbfd, | |
953 | asection *nsec, | |
954 | bfd_vma nval) | |
252b5132 RH |
955 | { |
956 | /* If either section has the output_section field set to | |
957 | bfd_abs_section_ptr, it means that the section is being | |
958 | discarded, and this is not really a multiple definition at all. | |
959 | FIXME: It would be cleaner to somehow ignore symbols defined in | |
960 | sections which are being discarded. */ | |
961 | if ((osec->output_section != NULL | |
962 | && ! bfd_is_abs_section (osec) | |
963 | && bfd_is_abs_section (osec->output_section)) | |
964 | || (nsec->output_section != NULL | |
965 | && ! bfd_is_abs_section (nsec) | |
966 | && bfd_is_abs_section (nsec->output_section))) | |
b34976b6 | 967 | return TRUE; |
252b5132 RH |
968 | |
969 | einfo (_("%X%C: multiple definition of `%T'\n"), | |
970 | nbfd, nsec, nval, name); | |
1579bae1 | 971 | if (obfd != NULL) |
252b5132 | 972 | einfo (_("%D: first defined here\n"), obfd, osec, oval); |
9b14b192 NC |
973 | |
974 | if (command_line.relax) | |
975 | { | |
976 | einfo (_("%P: Disabling relaxation: it will not work with multiple definitions\n")); | |
977 | command_line.relax = 0; | |
978 | } | |
6d5e62f8 | 979 | |
b34976b6 | 980 | return TRUE; |
252b5132 RH |
981 | } |
982 | ||
983 | /* This is called when there is a definition of a common symbol, or | |
984 | when a common symbol is found for a symbol that is already defined, | |
985 | or when two common symbols are found. We only do something if | |
986 | -warn-common was used. */ | |
987 | ||
b34976b6 | 988 | static bfd_boolean |
1579bae1 AM |
989 | multiple_common (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
990 | const char *name, | |
991 | bfd *obfd, | |
992 | enum bfd_link_hash_type otype, | |
993 | bfd_vma osize, | |
994 | bfd *nbfd, | |
995 | enum bfd_link_hash_type ntype, | |
996 | bfd_vma nsize) | |
252b5132 RH |
997 | { |
998 | if (! config.warn_common) | |
b34976b6 | 999 | return TRUE; |
252b5132 RH |
1000 | |
1001 | if (ntype == bfd_link_hash_defined | |
1002 | || ntype == bfd_link_hash_defweak | |
1003 | || ntype == bfd_link_hash_indirect) | |
1004 | { | |
1005 | ASSERT (otype == bfd_link_hash_common); | |
1006 | einfo (_("%B: warning: definition of `%T' overriding common\n"), | |
1007 | nbfd, name); | |
1008 | if (obfd != NULL) | |
1009 | einfo (_("%B: warning: common is here\n"), obfd); | |
1010 | } | |
1011 | else if (otype == bfd_link_hash_defined | |
1012 | || otype == bfd_link_hash_defweak | |
1013 | || otype == bfd_link_hash_indirect) | |
1014 | { | |
1015 | ASSERT (ntype == bfd_link_hash_common); | |
1016 | einfo (_("%B: warning: common of `%T' overridden by definition\n"), | |
1017 | nbfd, name); | |
1018 | if (obfd != NULL) | |
1019 | einfo (_("%B: warning: defined here\n"), obfd); | |
1020 | } | |
1021 | else | |
1022 | { | |
1023 | ASSERT (otype == bfd_link_hash_common && ntype == bfd_link_hash_common); | |
1024 | if (osize > nsize) | |
1025 | { | |
1026 | einfo (_("%B: warning: common of `%T' overridden by larger common\n"), | |
1027 | nbfd, name); | |
1028 | if (obfd != NULL) | |
1029 | einfo (_("%B: warning: larger common is here\n"), obfd); | |
1030 | } | |
1031 | else if (nsize > osize) | |
1032 | { | |
1033 | einfo (_("%B: warning: common of `%T' overriding smaller common\n"), | |
1034 | nbfd, name); | |
1035 | if (obfd != NULL) | |
1036 | einfo (_("%B: warning: smaller common is here\n"), obfd); | |
1037 | } | |
1038 | else | |
1039 | { | |
1040 | einfo (_("%B: warning: multiple common of `%T'\n"), nbfd, name); | |
1041 | if (obfd != NULL) | |
1042 | einfo (_("%B: warning: previous common is here\n"), obfd); | |
1043 | } | |
1044 | } | |
1045 | ||
b34976b6 | 1046 | return TRUE; |
252b5132 RH |
1047 | } |
1048 | ||
1049 | /* This is called when BFD has discovered a set element. H is the | |
1050 | entry in the linker hash table for the set. SECTION and VALUE | |
1051 | represent a value which should be added to the set. */ | |
1052 | ||
b34976b6 | 1053 | static bfd_boolean |
1579bae1 AM |
1054 | add_to_set (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1055 | struct bfd_link_hash_entry *h, | |
1056 | bfd_reloc_code_real_type reloc, | |
1057 | bfd *abfd, | |
1058 | asection *section, | |
1059 | bfd_vma value) | |
252b5132 RH |
1060 | { |
1061 | if (config.warn_constructors) | |
1062 | einfo (_("%P: warning: global constructor %s used\n"), | |
1063 | h->root.string); | |
1064 | ||
1065 | if (! config.build_constructors) | |
b34976b6 | 1066 | return TRUE; |
252b5132 | 1067 | |
1579bae1 | 1068 | ldctor_add_set_entry (h, reloc, NULL, section, value); |
252b5132 RH |
1069 | |
1070 | if (h->type == bfd_link_hash_new) | |
1071 | { | |
1072 | h->type = bfd_link_hash_undefined; | |
1073 | h->u.undef.abfd = abfd; | |
1074 | /* We don't call bfd_link_add_undef to add this to the list of | |
1075 | undefined symbols because we are going to define it | |
1076 | ourselves. */ | |
1077 | } | |
1078 | ||
b34976b6 | 1079 | return TRUE; |
252b5132 RH |
1080 | } |
1081 | ||
1082 | /* This is called when BFD has discovered a constructor. This is only | |
1083 | called for some object file formats--those which do not handle | |
1084 | constructors in some more clever fashion. This is similar to | |
1085 | adding an element to a set, but less general. */ | |
1086 | ||
b34976b6 | 1087 | static bfd_boolean |
1579bae1 AM |
1088 | constructor_callback (struct bfd_link_info *info, |
1089 | bfd_boolean constructor, | |
1090 | const char *name, | |
1091 | bfd *abfd, | |
1092 | asection *section, | |
1093 | bfd_vma value) | |
252b5132 RH |
1094 | { |
1095 | char *s; | |
1096 | struct bfd_link_hash_entry *h; | |
1097 | char set_name[1 + sizeof "__CTOR_LIST__"]; | |
1098 | ||
1099 | if (config.warn_constructors) | |
1100 | einfo (_("%P: warning: global constructor %s used\n"), name); | |
1101 | ||
1102 | if (! config.build_constructors) | |
b34976b6 | 1103 | return TRUE; |
252b5132 RH |
1104 | |
1105 | /* Ensure that BFD_RELOC_CTOR exists now, so that we can give a | |
1106 | useful error message. */ | |
1107 | if (bfd_reloc_type_lookup (output_bfd, BFD_RELOC_CTOR) == NULL | |
1049f94e | 1108 | && (link_info.relocatable |
252b5132 RH |
1109 | || bfd_reloc_type_lookup (abfd, BFD_RELOC_CTOR) == NULL)) |
1110 | einfo (_("%P%F: BFD backend error: BFD_RELOC_CTOR unsupported\n")); | |
1111 | ||
1112 | s = set_name; | |
1113 | if (bfd_get_symbol_leading_char (abfd) != '\0') | |
1114 | *s++ = bfd_get_symbol_leading_char (abfd); | |
1115 | if (constructor) | |
1116 | strcpy (s, "__CTOR_LIST__"); | |
1117 | else | |
1118 | strcpy (s, "__DTOR_LIST__"); | |
1119 | ||
b34976b6 | 1120 | h = bfd_link_hash_lookup (info->hash, set_name, TRUE, TRUE, TRUE); |
252b5132 RH |
1121 | if (h == (struct bfd_link_hash_entry *) NULL) |
1122 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); | |
1123 | if (h->type == bfd_link_hash_new) | |
1124 | { | |
1125 | h->type = bfd_link_hash_undefined; | |
1126 | h->u.undef.abfd = abfd; | |
1127 | /* We don't call bfd_link_add_undef to add this to the list of | |
1128 | undefined symbols because we are going to define it | |
1129 | ourselves. */ | |
1130 | } | |
1131 | ||
1132 | ldctor_add_set_entry (h, BFD_RELOC_CTOR, name, section, value); | |
b34976b6 | 1133 | return TRUE; |
252b5132 RH |
1134 | } |
1135 | ||
1136 | /* A structure used by warning_callback to pass information through | |
1137 | bfd_map_over_sections. */ | |
1138 | ||
0125cdf2 NC |
1139 | struct warning_callback_info |
1140 | { | |
b34976b6 | 1141 | bfd_boolean found; |
252b5132 RH |
1142 | const char *warning; |
1143 | const char *symbol; | |
1144 | asymbol **asymbols; | |
1145 | }; | |
1146 | ||
1147 | /* This is called when there is a reference to a warning symbol. */ | |
1148 | ||
b34976b6 | 1149 | static bfd_boolean |
1579bae1 AM |
1150 | warning_callback (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1151 | const char *warning, | |
1152 | const char *symbol, | |
1153 | bfd *abfd, | |
1154 | asection *section, | |
1155 | bfd_vma address) | |
252b5132 RH |
1156 | { |
1157 | /* This is a hack to support warn_multiple_gp. FIXME: This should | |
1158 | have a cleaner interface, but what? */ | |
1159 | if (! config.warn_multiple_gp | |
1160 | && strcmp (warning, "using multiple gp values") == 0) | |
b34976b6 | 1161 | return TRUE; |
252b5132 RH |
1162 | |
1163 | if (section != NULL) | |
1164 | einfo ("%C: %s\n", abfd, section, address, warning); | |
1165 | else if (abfd == NULL) | |
1166 | einfo ("%P: %s\n", warning); | |
1167 | else if (symbol == NULL) | |
1168 | einfo ("%B: %s\n", abfd, warning); | |
1169 | else | |
1170 | { | |
1171 | lang_input_statement_type *entry; | |
1172 | asymbol **asymbols; | |
1173 | struct warning_callback_info info; | |
1174 | ||
1175 | /* Look through the relocs to see if we can find a plausible | |
1176 | address. */ | |
252b5132 RH |
1177 | entry = (lang_input_statement_type *) abfd->usrdata; |
1178 | if (entry != NULL && entry->asymbols != NULL) | |
1179 | asymbols = entry->asymbols; | |
1180 | else | |
1181 | { | |
1182 | long symsize; | |
1183 | long symbol_count; | |
1184 | ||
1185 | symsize = bfd_get_symtab_upper_bound (abfd); | |
1186 | if (symsize < 0) | |
1187 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
1579bae1 | 1188 | asymbols = xmalloc (symsize); |
252b5132 RH |
1189 | symbol_count = bfd_canonicalize_symtab (abfd, asymbols); |
1190 | if (symbol_count < 0) | |
1191 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
1192 | if (entry != NULL) | |
1193 | { | |
1194 | entry->asymbols = asymbols; | |
1195 | entry->symbol_count = symbol_count; | |
1196 | } | |
1197 | } | |
1198 | ||
b34976b6 | 1199 | info.found = FALSE; |
252b5132 RH |
1200 | info.warning = warning; |
1201 | info.symbol = symbol; | |
1202 | info.asymbols = asymbols; | |
1579bae1 | 1203 | bfd_map_over_sections (abfd, warning_find_reloc, &info); |
252b5132 RH |
1204 | |
1205 | if (! info.found) | |
1206 | einfo ("%B: %s\n", abfd, warning); | |
1207 | ||
1208 | if (entry == NULL) | |
1209 | free (asymbols); | |
1210 | } | |
1211 | ||
b34976b6 | 1212 | return TRUE; |
252b5132 RH |
1213 | } |
1214 | ||
1215 | /* This is called by warning_callback for each section. It checks the | |
1216 | relocs of the section to see if it can find a reference to the | |
1217 | symbol which triggered the warning. If it can, it uses the reloc | |
1218 | to give an error message with a file and line number. */ | |
1219 | ||
1220 | static void | |
1579bae1 | 1221 | warning_find_reloc (bfd *abfd, asection *sec, void *iarg) |
252b5132 | 1222 | { |
1579bae1 | 1223 | struct warning_callback_info *info = iarg; |
252b5132 RH |
1224 | long relsize; |
1225 | arelent **relpp; | |
1226 | long relcount; | |
1227 | arelent **p, **pend; | |
1228 | ||
1229 | if (info->found) | |
1230 | return; | |
1231 | ||
1232 | relsize = bfd_get_reloc_upper_bound (abfd, sec); | |
1233 | if (relsize < 0) | |
1234 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1235 | if (relsize == 0) | |
1236 | return; | |
1237 | ||
1579bae1 | 1238 | relpp = xmalloc (relsize); |
252b5132 RH |
1239 | relcount = bfd_canonicalize_reloc (abfd, sec, relpp, info->asymbols); |
1240 | if (relcount < 0) | |
1241 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1242 | ||
1243 | p = relpp; | |
1244 | pend = p + relcount; | |
1245 | for (; p < pend && *p != NULL; p++) | |
1246 | { | |
1247 | arelent *q = *p; | |
1248 | ||
1249 | if (q->sym_ptr_ptr != NULL | |
1250 | && *q->sym_ptr_ptr != NULL | |
1251 | && strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), info->symbol) == 0) | |
1252 | { | |
1253 | /* We found a reloc for the symbol we are looking for. */ | |
1254 | einfo ("%C: %s\n", abfd, sec, q->address, info->warning); | |
b34976b6 | 1255 | info->found = TRUE; |
252b5132 RH |
1256 | break; |
1257 | } | |
1258 | } | |
1259 | ||
1260 | free (relpp); | |
1261 | } | |
1262 | ||
1263 | /* This is called when an undefined symbol is found. */ | |
1264 | ||
b34976b6 | 1265 | static bfd_boolean |
1579bae1 AM |
1266 | undefined_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1267 | const char *name, | |
1268 | bfd *abfd, | |
1269 | asection *section, | |
1270 | bfd_vma address, | |
0b28295d | 1271 | bfd_boolean error) |
252b5132 RH |
1272 | { |
1273 | static char *error_name; | |
1274 | static unsigned int error_count; | |
1275 | ||
1276 | #define MAX_ERRORS_IN_A_ROW 5 | |
1277 | ||
1278 | if (config.warn_once) | |
1279 | { | |
1280 | static struct bfd_hash_table *hash; | |
1281 | ||
1282 | /* Only warn once about a particular undefined symbol. */ | |
252b5132 RH |
1283 | if (hash == NULL) |
1284 | { | |
1579bae1 | 1285 | hash = xmalloc (sizeof (struct bfd_hash_table)); |
252b5132 RH |
1286 | if (! bfd_hash_table_init (hash, bfd_hash_newfunc)) |
1287 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); | |
1288 | } | |
1289 | ||
b34976b6 AM |
1290 | if (bfd_hash_lookup (hash, name, FALSE, FALSE) != NULL) |
1291 | return TRUE; | |
252b5132 | 1292 | |
b34976b6 | 1293 | if (bfd_hash_lookup (hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
1294 | einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); |
1295 | } | |
1296 | ||
1297 | /* We never print more than a reasonable number of errors in a row | |
1298 | for a single symbol. */ | |
1579bae1 | 1299 | if (error_name != NULL |
252b5132 RH |
1300 | && strcmp (name, error_name) == 0) |
1301 | ++error_count; | |
1302 | else | |
1303 | { | |
1304 | error_count = 0; | |
1579bae1 | 1305 | if (error_name != NULL) |
252b5132 | 1306 | free (error_name); |
d1b2b2dc | 1307 | error_name = xstrdup (name); |
252b5132 RH |
1308 | } |
1309 | ||
1310 | if (section != NULL) | |
1311 | { | |
1312 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1313 | { |
0b28295d ILT |
1314 | if (error) |
1315 | einfo (_("%X%C: undefined reference to `%T'\n"), | |
1316 | abfd, section, address, name); | |
1317 | else | |
1318 | einfo (_("%C: warning: undefined reference to `%T'\n"), | |
1319 | abfd, section, address, name); | |
b6f29aaa | 1320 | } |
252b5132 | 1321 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1322 | { |
1323 | if (error) | |
1324 | einfo (_("%X%D: more undefined references to `%T' follow\n"), | |
1325 | abfd, section, address, name); | |
1326 | else | |
1327 | einfo (_("%D: warning: more undefined references to `%T' follow\n"), | |
1328 | abfd, section, address, name); | |
1329 | } | |
1330 | else if (error) | |
1331 | einfo ("%X"); | |
252b5132 RH |
1332 | } |
1333 | else | |
1334 | { | |
1335 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1336 | { |
0b28295d ILT |
1337 | if (error) |
1338 | einfo (_("%X%B: undefined reference to `%T'\n"), | |
1339 | abfd, name); | |
1340 | else | |
1341 | einfo (_("%B: warning: undefined reference to `%T'\n"), | |
1342 | abfd, name); | |
b6f29aaa | 1343 | } |
252b5132 | 1344 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1345 | { |
1346 | if (error) | |
1347 | einfo (_("%X%B: more undefined references to `%T' follow\n"), | |
1348 | abfd, name); | |
1349 | else | |
1350 | einfo (_("%B: warning: more undefined references to `%T' follow\n"), | |
1351 | abfd, name); | |
1352 | } | |
1353 | else if (error) | |
1354 | einfo ("%X"); | |
252b5132 RH |
1355 | } |
1356 | ||
b34976b6 | 1357 | return TRUE; |
252b5132 RH |
1358 | } |
1359 | ||
8aae64e6 AO |
1360 | /* Counter to limit the number of relocation overflow error messages |
1361 | to print. Errors are printed as it is decremented. When it's | |
1362 | called and the counter is zero, a final message is printed | |
1363 | indicating more relocations were omitted. When it gets to -1, no | |
1364 | such errors are printed. If it's initially set to a value less | |
1365 | than -1, all such errors will be printed (--verbose does this). */ | |
1366 | ||
1367 | int overflow_cutoff_limit = 10; | |
1368 | ||
252b5132 RH |
1369 | /* This is called when a reloc overflows. */ |
1370 | ||
b34976b6 | 1371 | static bfd_boolean |
1579bae1 AM |
1372 | reloc_overflow (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1373 | const char *name, | |
1374 | const char *reloc_name, | |
1375 | bfd_vma addend, | |
1376 | bfd *abfd, | |
1377 | asection *section, | |
1378 | bfd_vma address) | |
252b5132 | 1379 | { |
8aae64e6 AO |
1380 | if (overflow_cutoff_limit == -1) |
1381 | return TRUE; | |
1382 | ||
1579bae1 | 1383 | if (abfd == NULL) |
252b5132 RH |
1384 | einfo (_("%P%X: generated")); |
1385 | else | |
1386 | einfo ("%X%C:", abfd, section, address); | |
8aae64e6 AO |
1387 | |
1388 | if (overflow_cutoff_limit >= 0 | |
1389 | && overflow_cutoff_limit-- == 0) | |
1390 | { | |
1391 | einfo (_(" additional relocation overflows omitted from the output\n")); | |
1392 | return TRUE; | |
1393 | } | |
1394 | ||
252b5132 RH |
1395 | einfo (_(" relocation truncated to fit: %s %T"), reloc_name, name); |
1396 | if (addend != 0) | |
1397 | einfo ("+%v", addend); | |
1398 | einfo ("\n"); | |
b34976b6 | 1399 | return TRUE; |
252b5132 RH |
1400 | } |
1401 | ||
1402 | /* This is called when a dangerous relocation is made. */ | |
1403 | ||
b34976b6 | 1404 | static bfd_boolean |
1579bae1 AM |
1405 | reloc_dangerous (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1406 | const char *message, | |
1407 | bfd *abfd, | |
1408 | asection *section, | |
1409 | bfd_vma address) | |
252b5132 | 1410 | { |
1579bae1 | 1411 | if (abfd == NULL) |
252b5132 RH |
1412 | einfo (_("%P%X: generated")); |
1413 | else | |
1414 | einfo ("%X%C:", abfd, section, address); | |
1415 | einfo (_("dangerous relocation: %s\n"), message); | |
b34976b6 | 1416 | return TRUE; |
252b5132 RH |
1417 | } |
1418 | ||
1419 | /* This is called when a reloc is being generated attached to a symbol | |
1420 | that is not being output. */ | |
1421 | ||
b34976b6 | 1422 | static bfd_boolean |
1579bae1 AM |
1423 | unattached_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1424 | const char *name, | |
1425 | bfd *abfd, | |
1426 | asection *section, | |
1427 | bfd_vma address) | |
252b5132 | 1428 | { |
1579bae1 | 1429 | if (abfd == NULL) |
252b5132 RH |
1430 | einfo (_("%P%X: generated")); |
1431 | else | |
1432 | einfo ("%X%C:", abfd, section, address); | |
1433 | einfo (_(" reloc refers to symbol `%T' which is not being output\n"), name); | |
b34976b6 | 1434 | return TRUE; |
252b5132 RH |
1435 | } |
1436 | ||
1437 | /* This is called if link_info.notice_all is set, or when a symbol in | |
1438 | link_info.notice_hash is found. Symbols are put in notice_hash | |
1439 | using the -y option. */ | |
1440 | ||
b34976b6 | 1441 | static bfd_boolean |
1579bae1 AM |
1442 | notice (struct bfd_link_info *info, |
1443 | const char *name, | |
1444 | bfd *abfd, | |
1445 | asection *section, | |
1446 | bfd_vma value) | |
252b5132 RH |
1447 | { |
1448 | if (! info->notice_all | |
1449 | || (info->notice_hash != NULL | |
b34976b6 | 1450 | && bfd_hash_lookup (info->notice_hash, name, FALSE, FALSE) != NULL)) |
252b5132 RH |
1451 | { |
1452 | if (bfd_is_und_section (section)) | |
1453 | einfo ("%B: reference to %s\n", abfd, name); | |
1454 | else | |
1455 | einfo ("%B: definition of %s\n", abfd, name); | |
1456 | } | |
1457 | ||
1458 | if (command_line.cref || nocrossref_list != NULL) | |
1459 | add_cref (name, abfd, section, value); | |
1460 | ||
b34976b6 | 1461 | return TRUE; |
252b5132 | 1462 | } |