Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Main program of GNU linker. |
2571583a | 2 | Copyright (C) 1991-2017 Free Software Foundation, Inc. |
252b5132 RH |
3 | Written by Steve Chamberlain steve@cygnus.com |
4 | ||
f96b4a7b | 5 | This file is part of the GNU Binutils. |
252b5132 | 6 | |
f96b4a7b | 7 | This program is free software; you can redistribute it and/or modify |
2fa9fc65 | 8 | it under the terms of the GNU General Public License as published by |
f96b4a7b NC |
9 | the Free Software Foundation; either version 3 of the License, or |
10 | (at your option) any later version. | |
252b5132 | 11 | |
f96b4a7b | 12 | This program is distributed in the hope that it will be useful, |
2fa9fc65 NC |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
252b5132 | 16 | |
2fa9fc65 | 17 | You should have received a copy of the GNU General Public License |
f96b4a7b NC |
18 | along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
20 | MA 02110-1301, USA. */ | |
252b5132 | 21 | |
252b5132 | 22 | #include "sysdep.h" |
3db64b00 | 23 | #include "bfd.h" |
3882b010 | 24 | #include "safe-ctype.h" |
252b5132 RH |
25 | #include "libiberty.h" |
26 | #include "progress.h" | |
27 | #include "bfdlink.h" | |
5af11cab | 28 | #include "filenames.h" |
252b5132 RH |
29 | |
30 | #include "ld.h" | |
31 | #include "ldmain.h" | |
32 | #include "ldmisc.h" | |
33 | #include "ldwrite.h" | |
252b5132 RH |
34 | #include "ldexp.h" |
35 | #include "ldlang.h" | |
df2a7313 | 36 | #include <ldgram.h> |
252b5132 RH |
37 | #include "ldlex.h" |
38 | #include "ldfile.h" | |
b71e2778 | 39 | #include "ldemul.h" |
252b5132 | 40 | #include "ldctor.h" |
5d3236ee DK |
41 | #ifdef ENABLE_PLUGINS |
42 | #include "plugin.h" | |
43 | #include "plugin-api.h" | |
5d3236ee | 44 | #endif /* ENABLE_PLUGINS */ |
252b5132 | 45 | |
0125cdf2 | 46 | /* Somewhere above, sys/stat.h got included. */ |
252b5132 RH |
47 | #if !defined(S_ISDIR) && defined(S_IFDIR) |
48 | #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) | |
49 | #endif | |
50 | ||
51 | #include <string.h> | |
52 | ||
9c8ebd6a DJ |
53 | #ifndef TARGET_SYSTEM_ROOT |
54 | #define TARGET_SYSTEM_ROOT "" | |
55 | #endif | |
56 | ||
252b5132 RH |
57 | /* EXPORTS */ |
58 | ||
53d25da6 AM |
59 | FILE *saved_script_handle = NULL; |
60 | FILE *previous_script_handle = NULL; | |
61 | bfd_boolean force_make_executable = FALSE; | |
62 | ||
252b5132 RH |
63 | char *default_target; |
64 | const char *output_filename = "a.out"; | |
65 | ||
66 | /* Name this program was invoked by. */ | |
67 | char *program_name; | |
68 | ||
9c8ebd6a | 69 | /* The prefix for system library directories. */ |
e2243057 | 70 | const char *ld_sysroot; |
9c8ebd6a | 71 | |
3fe38064 | 72 | /* The canonical representation of ld_sysroot. */ |
0aa7f586 | 73 | char *ld_canon_sysroot; |
3fe38064 NC |
74 | int ld_canon_sysroot_len; |
75 | ||
e8044f35 | 76 | /* Set by -G argument, for targets like MIPS ELF. */ |
252b5132 RH |
77 | int g_switch_value = 8; |
78 | ||
79 | /* Nonzero means print names of input files as processed. */ | |
b34976b6 | 80 | bfd_boolean trace_files; |
252b5132 | 81 | |
cd6f1cf3 NC |
82 | /* Nonzero means report actions taken by the linker, and describe the linker script in use. */ |
83 | bfd_boolean verbose; | |
252b5132 RH |
84 | |
85 | /* Nonzero means version number was printed, so exit successfully | |
86 | instead of complaining if no input files are given. */ | |
b34976b6 | 87 | bfd_boolean version_printed; |
252b5132 | 88 | |
b34976b6 AM |
89 | /* TRUE if we should demangle symbol names. */ |
90 | bfd_boolean demangling; | |
252b5132 RH |
91 | |
92 | args_type command_line; | |
93 | ||
94 | ld_config_type config; | |
95 | ||
bcaa7b3e L |
96 | sort_type sort_section; |
97 | ||
e2243057 RS |
98 | static const char *get_sysroot |
99 | (int, char **); | |
0125cdf2 | 100 | static char *get_emulation |
1579bae1 | 101 | (int, char **); |
0125cdf2 | 102 | static bfd_boolean add_archive_element |
5d3236ee | 103 | (struct bfd_link_info *, bfd *, const char *, bfd **); |
1a72702b | 104 | static void multiple_definition |
24f58f47 | 105 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
1579bae1 | 106 | bfd *, asection *, bfd_vma); |
1a72702b | 107 | static void multiple_common |
24f58f47 AM |
108 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
109 | bfd *, enum bfd_link_hash_type, bfd_vma); | |
1a72702b | 110 | static void add_to_set |
1579bae1 AM |
111 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
112 | bfd_reloc_code_real_type, bfd *, asection *, bfd_vma); | |
1a72702b | 113 | static void constructor_callback |
1579bae1 AM |
114 | (struct bfd_link_info *, bfd_boolean, const char *, bfd *, |
115 | asection *, bfd_vma); | |
1a72702b | 116 | static void warning_callback |
1579bae1 AM |
117 | (struct bfd_link_info *, const char *, const char *, bfd *, |
118 | asection *, bfd_vma); | |
0125cdf2 | 119 | static void warning_find_reloc |
1579bae1 | 120 | (bfd *, asection *, void *); |
1a72702b | 121 | static void undefined_symbol |
1579bae1 AM |
122 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma, |
123 | bfd_boolean); | |
1a72702b | 124 | static void reloc_overflow |
dfeffb9f L |
125 | (struct bfd_link_info *, struct bfd_link_hash_entry *, const char *, |
126 | const char *, bfd_vma, bfd *, asection *, bfd_vma); | |
1a72702b | 127 | static void reloc_dangerous |
1579bae1 | 128 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
1a72702b | 129 | static void unattached_reloc |
1579bae1 | 130 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
0125cdf2 | 131 | static bfd_boolean notice |
35ed3f94 | 132 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
46135103 | 133 | struct bfd_link_hash_entry *, bfd *, asection *, bfd_vma, flagword); |
0125cdf2 NC |
134 | |
135 | static struct bfd_link_callbacks link_callbacks = | |
136 | { | |
252b5132 RH |
137 | add_archive_element, |
138 | multiple_definition, | |
139 | multiple_common, | |
140 | add_to_set, | |
141 | constructor_callback, | |
142 | warning_callback, | |
143 | undefined_symbol, | |
144 | reloc_overflow, | |
145 | reloc_dangerous, | |
146 | unattached_reloc, | |
e1fffbe6 | 147 | notice, |
2889e75b | 148 | einfo, |
49fa1e15 AM |
149 | info_msg, |
150 | minfo, | |
2889e75b | 151 | ldlang_override_segment_assignment |
252b5132 RH |
152 | }; |
153 | ||
3b66a141 | 154 | static bfd_assert_handler_type default_bfd_assert_handler; |
4519d071 | 155 | static bfd_error_handler_type default_bfd_error_handler; |
3b66a141 | 156 | |
252b5132 RH |
157 | struct bfd_link_info link_info; |
158 | \f | |
159 | static void | |
498cd2a0 | 160 | ld_cleanup (void) |
252b5132 | 161 | { |
498cd2a0 AM |
162 | bfd_cache_close_all (); |
163 | #ifdef ENABLE_PLUGINS | |
164 | plugin_call_cleanup (); | |
165 | #endif | |
166 | if (output_filename && delete_output_file_on_failure) | |
167 | unlink_if_ordinary (output_filename); | |
252b5132 RH |
168 | } |
169 | ||
4519d071 | 170 | /* Hook to notice BFD assertions. */ |
3b66a141 HPN |
171 | |
172 | static void | |
173 | ld_bfd_assert_handler (const char *fmt, const char *bfdver, | |
174 | const char *file, int line) | |
175 | { | |
3b66a141 | 176 | config.make_executable = FALSE; |
4519d071 AM |
177 | (*default_bfd_assert_handler) (fmt, bfdver, file, line); |
178 | } | |
179 | ||
180 | /* Hook the bfd error/warning handler for --fatal-warnings. */ | |
181 | ||
182 | static void | |
183 | ld_bfd_error_handler (const char *fmt, va_list ap) | |
184 | { | |
185 | if (config.fatal_warnings) | |
186 | config.make_executable = FALSE; | |
187 | (*default_bfd_error_handler) (fmt, ap); | |
3b66a141 HPN |
188 | } |
189 | ||
252b5132 | 190 | int |
1579bae1 | 191 | main (int argc, char **argv) |
252b5132 RH |
192 | { |
193 | char *emulation; | |
194 | long start_time = get_run_time (); | |
195 | ||
196 | #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) | |
197 | setlocale (LC_MESSAGES, ""); | |
3882b010 L |
198 | #endif |
199 | #if defined (HAVE_SETLOCALE) | |
200 | setlocale (LC_CTYPE, ""); | |
252b5132 RH |
201 | #endif |
202 | bindtextdomain (PACKAGE, LOCALEDIR); | |
203 | textdomain (PACKAGE); | |
204 | ||
205 | program_name = argv[0]; | |
206 | xmalloc_set_program_name (program_name); | |
207 | ||
208 | START_PROGRESS (program_name, 0); | |
209 | ||
869b9d07 MM |
210 | expandargv (&argc, &argv); |
211 | ||
252b5132 RH |
212 | bfd_init (); |
213 | ||
214 | bfd_set_error_program_name (program_name); | |
215 | ||
3b66a141 HPN |
216 | /* We want to notice and fail on those nasty BFD assertions which are |
217 | likely to signal incorrect output being generated but otherwise may | |
218 | leave no trace. */ | |
219 | default_bfd_assert_handler = bfd_set_assert_handler (ld_bfd_assert_handler); | |
220 | ||
4519d071 AM |
221 | /* Also hook the bfd error/warning handler for --fatal-warnings. */ |
222 | default_bfd_error_handler = bfd_set_error_handler (ld_bfd_error_handler); | |
223 | ||
498cd2a0 | 224 | xatexit (ld_cleanup); |
252b5132 | 225 | |
e2243057 RS |
226 | /* Set up the sysroot directory. */ |
227 | ld_sysroot = get_sysroot (argc, argv); | |
228 | if (*ld_sysroot) | |
3074964f | 229 | ld_canon_sysroot = lrealpath (ld_sysroot); |
3fe38064 NC |
230 | if (ld_canon_sysroot) |
231 | ld_canon_sysroot_len = strlen (ld_canon_sysroot); | |
232 | else | |
233 | ld_canon_sysroot_len = -1; | |
234 | ||
252b5132 RH |
235 | /* Set the default BFD target based on the configured target. Doing |
236 | this permits the linker to be configured for a particular target, | |
237 | and linked against a shared BFD library which was configured for | |
238 | a different target. The macro TARGET is defined by Makefile. */ | |
0aa7f586 | 239 | if (!bfd_set_default_target (TARGET)) |
252b5132 RH |
240 | { |
241 | einfo (_("%X%P: can't set BFD default target to `%s': %E\n"), TARGET); | |
242 | xexit (1); | |
243 | } | |
244 | ||
b47c4208 AM |
245 | #if YYDEBUG |
246 | { | |
247 | extern int yydebug; | |
248 | yydebug = 1; | |
249 | } | |
250 | #endif | |
251 | ||
b34976b6 | 252 | config.build_constructors = TRUE; |
c76308d2 | 253 | config.rpath_separator = ':'; |
a854a4a7 AM |
254 | config.split_by_reloc = (unsigned) -1; |
255 | config.split_by_file = (bfd_size_type) -1; | |
3b95049e AM |
256 | config.make_executable = TRUE; |
257 | config.magic_demand_paged = TRUE; | |
258 | config.text_read_only = TRUE; | |
4f9d22a0 | 259 | link_info.disable_target_specific_optimizations = -1; |
3b95049e | 260 | |
b34976b6 | 261 | command_line.warn_mismatch = TRUE; |
fe7929ce | 262 | command_line.warn_search_mismatch = TRUE; |
02b0b1aa | 263 | command_line.check_section_addresses = -1; |
bcaa7b3e | 264 | |
252b5132 RH |
265 | /* We initialize DEMANGLING based on the environment variable |
266 | COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the | |
267 | output of the linker, unless COLLECT_NO_DEMANGLE is set in the | |
268 | environment. Acting the same way here lets us provide the same | |
269 | interface by default. */ | |
270 | demangling = getenv ("COLLECT_NO_DEMANGLE") == NULL; | |
271 | ||
b34976b6 | 272 | link_info.allow_undefined_version = TRUE; |
b5067602 | 273 | link_info.keep_memory = TRUE; |
b5067602 | 274 | link_info.combreloc = TRUE; |
d5cd3933 | 275 | link_info.strip_discarded = TRUE; |
2760f24c RG |
276 | link_info.emit_hash = DEFAULT_EMIT_SYSV_HASH; |
277 | link_info.emit_gnu_hash = DEFAULT_EMIT_GNU_HASH; | |
a9a4c53e AM |
278 | link_info.callbacks = &link_callbacks; |
279 | link_info.input_bfds_tail = &link_info.input_bfds; | |
3dbf70a2 MM |
280 | /* SVR4 linkers seem to set DT_INIT and DT_FINI based on magic _init |
281 | and _fini symbols. We are compatible. */ | |
282 | link_info.init_function = "_init"; | |
283 | link_info.fini_function = "_fini"; | |
a9a4c53e | 284 | link_info.relax_pass = 1; |
889c2a67 | 285 | link_info.extern_protected_data = -1; |
aec6b87e | 286 | link_info.dynamic_undefined_weak = -1; |
e0076ab3 | 287 | link_info.pei386_auto_import = -1; |
db6751f2 | 288 | link_info.spare_dynamic_tags = 5; |
967928e9 | 289 | link_info.path_separator = ':'; |
6c3bc0f8 NC |
290 | #ifdef DEFAULT_FLAG_COMPRESS_DEBUG |
291 | link_info.compress_debug = COMPRESS_DEBUG_GABI_ZLIB; | |
292 | #endif | |
6734f10a | 293 | #ifdef DEFAULT_NEW_DTAGS |
91001320 | 294 | link_info.new_dtags = DEFAULT_NEW_DTAGS; |
6734f10a | 295 | #endif |
24718e3b | 296 | |
252b5132 | 297 | ldfile_add_arch (""); |
252b5132 RH |
298 | emulation = get_emulation (argc, argv); |
299 | ldemul_choose_mode (emulation); | |
742aeb63 | 300 | default_target = ldemul_choose_target (argc, argv); |
8be573a7 AM |
301 | config.maxpagesize = bfd_emul_get_maxpagesize (default_target); |
302 | config.commonpagesize = bfd_emul_get_commonpagesize (default_target); | |
252b5132 | 303 | lang_init (); |
18d6a79d | 304 | ldexp_init (); |
252b5132 | 305 | ldemul_before_parse (); |
b34976b6 | 306 | lang_has_input_file = FALSE; |
252b5132 RH |
307 | parse_args (argc, argv); |
308 | ||
2d643429 NC |
309 | if (config.hash_table_size != 0) |
310 | bfd_hash_set_default_size (config.hash_table_size); | |
311 | ||
9bbc1a67 AM |
312 | #ifdef ENABLE_PLUGINS |
313 | /* Now all the plugin arguments have been gathered, we can load them. */ | |
d82184d7 | 314 | plugin_load_plugins (); |
9bbc1a67 | 315 | #endif /* ENABLE_PLUGINS */ |
36af4a4e | 316 | |
9bbc1a67 | 317 | ldemul_set_symbols (); |
252b5132 | 318 | |
14be8564 L |
319 | /* If we have not already opened and parsed a linker script, |
320 | try the default script from command line first. */ | |
321 | if (saved_script_handle == NULL | |
322 | && command_line.default_script != NULL) | |
323 | { | |
324 | ldfile_open_command_file (command_line.default_script); | |
325 | parser_input = input_script; | |
326 | yyparse (); | |
327 | } | |
328 | ||
b9a8de1e NC |
329 | /* If we have not already opened and parsed a linker script |
330 | read the emulation's appropriate default script. */ | |
b90e1c6f | 331 | if (saved_script_handle == NULL) |
252b5132 | 332 | { |
252b5132 | 333 | int isfile; |
b7a26f91 | 334 | char *s = ldemul_get_script (&isfile); |
252b5132 RH |
335 | |
336 | if (isfile) | |
7d24f02c | 337 | ldfile_open_default_command_file (s); |
252b5132 | 338 | else |
b7a26f91 | 339 | { |
252b5132 | 340 | lex_string = s; |
dab69f68 | 341 | lex_redirect (s, _("built in linker script"), 1); |
252b5132 RH |
342 | } |
343 | parser_input = input_script; | |
344 | yyparse (); | |
345 | lex_string = NULL; | |
346 | } | |
347 | ||
cd6f1cf3 | 348 | if (verbose) |
b9a8de1e | 349 | { |
9cb61eab AM |
350 | if (saved_script_handle) |
351 | info_msg (_("using external linker script:")); | |
352 | else | |
353 | info_msg (_("using internal linker script:")); | |
354 | info_msg ("\n==================================================\n"); | |
b9a8de1e NC |
355 | |
356 | if (saved_script_handle) | |
357 | { | |
74699268 | 358 | static const int ld_bufsz = 8193; |
b9a8de1e | 359 | size_t n; |
1e9cc1c2 | 360 | char *buf = (char *) xmalloc (ld_bufsz); |
b9a8de1e NC |
361 | |
362 | rewind (saved_script_handle); | |
74699268 | 363 | while ((n = fread (buf, 1, ld_bufsz - 1, saved_script_handle)) > 0) |
b9a8de1e | 364 | { |
b7a26f91 | 365 | buf[n] = 0; |
f5ac6ab3 | 366 | info_msg ("%s", buf); |
b9a8de1e NC |
367 | } |
368 | rewind (saved_script_handle); | |
369 | free (buf); | |
370 | } | |
371 | else | |
372 | { | |
373 | int isfile; | |
374 | ||
b7a26f91 | 375 | info_msg (ldemul_get_script (&isfile)); |
b9a8de1e | 376 | } |
b7a26f91 | 377 | |
b9a8de1e NC |
378 | info_msg ("\n==================================================\n"); |
379 | } | |
380 | ||
7bdf4127 AB |
381 | if (command_line.force_group_allocation |
382 | || !bfd_link_relocatable (&link_info)) | |
383 | link_info.resolve_section_groups = TRUE; | |
384 | else | |
385 | link_info.resolve_section_groups = FALSE; | |
386 | ||
30824704 RM |
387 | if (command_line.print_output_format) |
388 | info_msg ("%s\n", lang_get_output_target ()); | |
389 | ||
252b5132 RH |
390 | lang_final (); |
391 | ||
61e2488c JT |
392 | /* If the only command line argument has been -v or --version or --verbose |
393 | then ignore any input files provided by linker scripts and exit now. | |
394 | We do not want to create an output file when the linker is just invoked | |
395 | to provide version information. */ | |
396 | if (argc == 2 && version_printed) | |
397 | xexit (0); | |
398 | ||
a4819f54 L |
399 | if (link_info.inhibit_common_definition && !bfd_link_dll (&link_info)) |
400 | einfo (_("%P%F: --no-define-common may not be used without -shared\n")); | |
401 | ||
b34976b6 | 402 | if (!lang_has_input_file) |
252b5132 | 403 | { |
30824704 | 404 | if (version_printed || command_line.print_output_format) |
252b5132 RH |
405 | xexit (0); |
406 | einfo (_("%P%F: no input files\n")); | |
407 | } | |
408 | ||
409 | if (trace_files) | |
0125cdf2 | 410 | info_msg (_("%P: mode %s\n"), emulation); |
252b5132 RH |
411 | |
412 | ldemul_after_parse (); | |
413 | ||
252b5132 RH |
414 | if (config.map_filename) |
415 | { | |
416 | if (strcmp (config.map_filename, "-") == 0) | |
417 | { | |
418 | config.map_file = stdout; | |
419 | } | |
420 | else | |
421 | { | |
422 | config.map_file = fopen (config.map_filename, FOPEN_WT); | |
423 | if (config.map_file == (FILE *) NULL) | |
424 | { | |
425 | bfd_set_error (bfd_error_system_call); | |
426 | einfo (_("%P%F: cannot open map file %s: %E\n"), | |
427 | config.map_filename); | |
428 | } | |
429 | } | |
430 | } | |
431 | ||
252b5132 RH |
432 | lang_process (); |
433 | ||
434 | /* Print error messages for any missing symbols, for any warning | |
6d5e62f8 | 435 | symbols, and possibly multiple definitions. */ |
0e1862bb | 436 | if (bfd_link_relocatable (&link_info)) |
f13a99db | 437 | link_info.output_bfd->flags &= ~EXEC_P; |
252b5132 | 438 | else |
f13a99db | 439 | link_info.output_bfd->flags |= EXEC_P; |
252b5132 | 440 | |
0ce398f1 L |
441 | if ((link_info.compress_debug & COMPRESS_DEBUG)) |
442 | { | |
443 | link_info.output_bfd->flags |= BFD_COMPRESS; | |
444 | if (link_info.compress_debug == COMPRESS_DEBUG_GABI_ZLIB) | |
445 | link_info.output_bfd->flags |= BFD_COMPRESS_GABI; | |
446 | } | |
447 | ||
252b5132 RH |
448 | ldwrite (); |
449 | ||
450 | if (config.map_file != NULL) | |
451 | lang_map (); | |
452 | if (command_line.cref) | |
453 | output_cref (config.map_file != NULL ? config.map_file : stdout); | |
454 | if (nocrossref_list != NULL) | |
455 | check_nocrossrefs (); | |
3604cb1f TG |
456 | if (command_line.print_memory_usage) |
457 | lang_print_memory_usage (); | |
edf84efc NC |
458 | #if 0 |
459 | { | |
0aa7f586 | 460 | struct bfd_link_hash_entry *h; |
252b5132 | 461 | |
edf84efc NC |
462 | h = bfd_link_hash_lookup (link_info.hash, "__image_base__", 0,0,1); |
463 | fprintf (stderr, "lookup = %p val %lx\n", h, h ? h->u.def.value : 1); | |
464 | } | |
465 | #endif | |
18d6a79d | 466 | ldexp_finish (); |
750877ba L |
467 | lang_finish (); |
468 | ||
1049f94e | 469 | /* Even if we're producing relocatable output, some non-fatal errors should |
252b5132 | 470 | be reported in the exit status. (What non-fatal errors, if any, do we |
1049f94e | 471 | want to ignore for relocatable output?) */ |
b34976b6 | 472 | if (!config.make_executable && !force_make_executable) |
252b5132 | 473 | { |
b34976b6 | 474 | if (trace_files) |
0125cdf2 NC |
475 | einfo (_("%P: link errors found, deleting executable `%s'\n"), |
476 | output_filename); | |
252b5132 | 477 | |
4309cbf2 | 478 | /* The file will be removed by ld_cleanup. */ |
252b5132 RH |
479 | xexit (1); |
480 | } | |
481 | else | |
482 | { | |
0aa7f586 | 483 | if (!bfd_close (link_info.output_bfd)) |
f13a99db | 484 | einfo (_("%F%B: final close failed: %E\n"), link_info.output_bfd); |
252b5132 RH |
485 | |
486 | /* If the --force-exe-suffix is enabled, and we're making an | |
6d5e62f8 KH |
487 | executable file and it doesn't end in .exe, copy it to one |
488 | which does. */ | |
0e1862bb L |
489 | if (!bfd_link_relocatable (&link_info) |
490 | && command_line.force_exe_suffix) | |
252b5132 RH |
491 | { |
492 | int len = strlen (output_filename); | |
0125cdf2 | 493 | |
6d5e62f8 | 494 | if (len < 4 |
252b5132 RH |
495 | || (strcasecmp (output_filename + len - 4, ".exe") != 0 |
496 | && strcasecmp (output_filename + len - 4, ".dll") != 0)) | |
497 | { | |
498 | FILE *src; | |
499 | FILE *dst; | |
500 | const int bsize = 4096; | |
1e9cc1c2 | 501 | char *buf = (char *) xmalloc (bsize); |
252b5132 | 502 | int l; |
1e9cc1c2 | 503 | char *dst_name = (char *) xmalloc (len + 5); |
0125cdf2 | 504 | |
252b5132 RH |
505 | strcpy (dst_name, output_filename); |
506 | strcat (dst_name, ".exe"); | |
507 | src = fopen (output_filename, FOPEN_RB); | |
508 | dst = fopen (dst_name, FOPEN_WB); | |
509 | ||
510 | if (!src) | |
b3862264 | 511 | einfo (_("%P%F: unable to open for source of copy `%s'\n"), |
1579bae1 | 512 | output_filename); |
252b5132 | 513 | if (!dst) |
b3862264 | 514 | einfo (_("%P%F: unable to open for destination of copy `%s'\n"), |
1579bae1 | 515 | dst_name); |
252b5132 RH |
516 | while ((l = fread (buf, 1, bsize, src)) > 0) |
517 | { | |
518 | int done = fwrite (buf, 1, l, dst); | |
0125cdf2 | 519 | |
252b5132 | 520 | if (done != l) |
0125cdf2 | 521 | einfo (_("%P: Error writing file `%s'\n"), dst_name); |
252b5132 | 522 | } |
0125cdf2 | 523 | |
252b5132 RH |
524 | fclose (src); |
525 | if (fclose (dst) == EOF) | |
0125cdf2 | 526 | einfo (_("%P: Error closing file `%s'\n"), dst_name); |
252b5132 RH |
527 | free (dst_name); |
528 | free (buf); | |
529 | } | |
530 | } | |
531 | } | |
532 | ||
533 | END_PROGRESS (program_name); | |
534 | ||
535 | if (config.stats) | |
536 | { | |
252b5132 RH |
537 | long run_time = get_run_time () - start_time; |
538 | ||
e922bcab | 539 | fflush (stdout); |
252b5132 RH |
540 | fprintf (stderr, _("%s: total time in link: %ld.%06ld\n"), |
541 | program_name, run_time / 1000000, run_time % 1000000); | |
e922bcab | 542 | fflush (stderr); |
252b5132 RH |
543 | } |
544 | ||
4309cbf2 | 545 | /* Prevent ld_cleanup from doing anything, after a successful link. */ |
252b5132 RH |
546 | output_filename = NULL; |
547 | ||
548 | xexit (0); | |
549 | return 0; | |
550 | } | |
551 | ||
e2243057 RS |
552 | /* If the configured sysroot is relocatable, try relocating it based on |
553 | default prefix FROM. Return the relocated directory if it exists, | |
554 | otherwise return null. */ | |
555 | ||
556 | static char * | |
557 | get_relative_sysroot (const char *from ATTRIBUTE_UNUSED) | |
558 | { | |
559 | #ifdef TARGET_SYSTEM_ROOT_RELOCATABLE | |
560 | char *path; | |
561 | struct stat s; | |
562 | ||
563 | path = make_relative_prefix (program_name, from, TARGET_SYSTEM_ROOT); | |
564 | if (path) | |
565 | { | |
566 | if (stat (path, &s) == 0 && S_ISDIR (s.st_mode)) | |
567 | return path; | |
568 | free (path); | |
569 | } | |
570 | #endif | |
571 | return 0; | |
572 | } | |
573 | ||
574 | /* Return the sysroot directory. Return "" if no sysroot is being used. */ | |
575 | ||
576 | static const char * | |
577 | get_sysroot (int argc, char **argv) | |
578 | { | |
579 | int i; | |
580 | const char *path; | |
581 | ||
582 | for (i = 1; i < argc; i++) | |
0112cd26 | 583 | if (CONST_STRNEQ (argv[i], "--sysroot=")) |
e2243057 RS |
584 | return argv[i] + strlen ("--sysroot="); |
585 | ||
586 | path = get_relative_sysroot (BINDIR); | |
587 | if (path) | |
588 | return path; | |
589 | ||
590 | path = get_relative_sysroot (TOOLBINDIR); | |
591 | if (path) | |
592 | return path; | |
593 | ||
594 | return TARGET_SYSTEM_ROOT; | |
595 | } | |
596 | ||
252b5132 RH |
597 | /* We need to find any explicitly given emulation in order to initialize the |
598 | state that's needed by the lex&yacc argument parser (parse_args). */ | |
599 | ||
600 | static char * | |
1579bae1 | 601 | get_emulation (int argc, char **argv) |
252b5132 RH |
602 | { |
603 | char *emulation; | |
604 | int i; | |
605 | ||
606 | emulation = getenv (EMULATION_ENVIRON); | |
607 | if (emulation == NULL) | |
608 | emulation = DEFAULT_EMULATION; | |
609 | ||
610 | for (i = 1; i < argc; i++) | |
611 | { | |
0112cd26 | 612 | if (CONST_STRNEQ (argv[i], "-m")) |
252b5132 RH |
613 | { |
614 | if (argv[i][2] == '\0') | |
615 | { | |
616 | /* -m EMUL */ | |
617 | if (i < argc - 1) | |
618 | { | |
619 | emulation = argv[i + 1]; | |
620 | i++; | |
621 | } | |
622 | else | |
0125cdf2 | 623 | einfo (_("%P%F: missing argument to -m\n")); |
252b5132 RH |
624 | } |
625 | else if (strcmp (argv[i], "-mips1") == 0 | |
626 | || strcmp (argv[i], "-mips2") == 0 | |
627 | || strcmp (argv[i], "-mips3") == 0 | |
d1cf510e | 628 | || strcmp (argv[i], "-mips4") == 0 |
6f33421c CD |
629 | || strcmp (argv[i], "-mips5") == 0 |
630 | || strcmp (argv[i], "-mips32") == 0 | |
631 | || strcmp (argv[i], "-mips32r2") == 0 | |
7361da2c | 632 | || strcmp (argv[i], "-mips32r6") == 0 |
5f74bc13 | 633 | || strcmp (argv[i], "-mips64") == 0 |
7361da2c AB |
634 | || strcmp (argv[i], "-mips64r2") == 0 |
635 | || strcmp (argv[i], "-mips64r6") == 0) | |
252b5132 | 636 | { |
31d677f9 | 637 | /* FIXME: The arguments -mips1, -mips2, -mips3, etc. are |
252b5132 RH |
638 | passed to the linker by some MIPS compilers. They |
639 | generally tell the linker to use a slightly different | |
640 | library path. Perhaps someday these should be | |
641 | implemented as emulations; until then, we just ignore | |
642 | the arguments and hope that nobody ever creates | |
643 | emulations named ips1, ips2 or ips3. */ | |
644 | } | |
645 | else if (strcmp (argv[i], "-m486") == 0) | |
646 | { | |
647 | /* FIXME: The argument -m486 is passed to the linker on | |
648 | some Linux systems. Hope that nobody creates an | |
649 | emulation named 486. */ | |
650 | } | |
651 | else | |
652 | { | |
653 | /* -mEMUL */ | |
654 | emulation = &argv[i][2]; | |
655 | } | |
656 | } | |
657 | } | |
658 | ||
659 | return emulation; | |
660 | } | |
661 | ||
252b5132 | 662 | void |
1579bae1 | 663 | add_ysym (const char *name) |
252b5132 | 664 | { |
1579bae1 | 665 | if (link_info.notice_hash == NULL) |
252b5132 | 666 | { |
0aa7f586 AM |
667 | link_info.notice_hash |
668 | = (struct bfd_hash_table *) xmalloc (sizeof (struct bfd_hash_table)); | |
66eb6687 AM |
669 | if (!bfd_hash_table_init_n (link_info.notice_hash, |
670 | bfd_hash_newfunc, | |
671 | sizeof (struct bfd_hash_entry), | |
672 | 61)) | |
252b5132 | 673 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); |
6d5e62f8 | 674 | } |
252b5132 | 675 | |
1579bae1 | 676 | if (bfd_hash_lookup (link_info.notice_hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
677 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); |
678 | } | |
679 | ||
0e86e20e AM |
680 | void |
681 | add_ignoresym (struct bfd_link_info *info, const char *name) | |
682 | { | |
683 | if (info->ignore_hash == NULL) | |
684 | { | |
685 | info->ignore_hash = xmalloc (sizeof (struct bfd_hash_table)); | |
0aa7f586 AM |
686 | if (!bfd_hash_table_init_n (info->ignore_hash, |
687 | bfd_hash_newfunc, | |
688 | sizeof (struct bfd_hash_entry), | |
689 | 61)) | |
0e86e20e AM |
690 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); |
691 | } | |
692 | ||
693 | if (bfd_hash_lookup (info->ignore_hash, name, TRUE, TRUE) == NULL) | |
694 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); | |
695 | } | |
696 | ||
252b5132 RH |
697 | /* Record a symbol to be wrapped, from the --wrap option. */ |
698 | ||
699 | void | |
1579bae1 | 700 | add_wrap (const char *name) |
252b5132 RH |
701 | { |
702 | if (link_info.wrap_hash == NULL) | |
703 | { | |
0aa7f586 AM |
704 | link_info.wrap_hash |
705 | = (struct bfd_hash_table *) xmalloc (sizeof (struct bfd_hash_table)); | |
66eb6687 AM |
706 | if (!bfd_hash_table_init_n (link_info.wrap_hash, |
707 | bfd_hash_newfunc, | |
708 | sizeof (struct bfd_hash_entry), | |
709 | 61)) | |
252b5132 RH |
710 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); |
711 | } | |
0125cdf2 | 712 | |
b34976b6 | 713 | if (bfd_hash_lookup (link_info.wrap_hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
714 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); |
715 | } | |
716 | ||
717 | /* Handle the -retain-symbols-file option. */ | |
718 | ||
719 | void | |
1579bae1 | 720 | add_keepsyms_file (const char *filename) |
252b5132 RH |
721 | { |
722 | FILE *file; | |
723 | char *buf; | |
724 | size_t bufsize; | |
725 | int c; | |
726 | ||
727 | if (link_info.strip == strip_some) | |
728 | einfo (_("%X%P: error: duplicate retain-symbols-file\n")); | |
729 | ||
730 | file = fopen (filename, "r"); | |
1579bae1 | 731 | if (file == NULL) |
252b5132 RH |
732 | { |
733 | bfd_set_error (bfd_error_system_call); | |
734 | einfo ("%X%P: %s: %E\n", filename); | |
735 | return; | |
736 | } | |
737 | ||
1e9cc1c2 NC |
738 | link_info.keep_hash = (struct bfd_hash_table *) |
739 | xmalloc (sizeof (struct bfd_hash_table)); | |
66eb6687 AM |
740 | if (!bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc, |
741 | sizeof (struct bfd_hash_entry))) | |
252b5132 RH |
742 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); |
743 | ||
744 | bufsize = 100; | |
1e9cc1c2 | 745 | buf = (char *) xmalloc (bufsize); |
252b5132 RH |
746 | |
747 | c = getc (file); | |
748 | while (c != EOF) | |
749 | { | |
3882b010 | 750 | while (ISSPACE (c)) |
252b5132 RH |
751 | c = getc (file); |
752 | ||
753 | if (c != EOF) | |
754 | { | |
755 | size_t len = 0; | |
756 | ||
0aa7f586 | 757 | while (!ISSPACE (c) && c != EOF) |
252b5132 RH |
758 | { |
759 | buf[len] = c; | |
760 | ++len; | |
761 | if (len >= bufsize) | |
762 | { | |
763 | bufsize *= 2; | |
1e9cc1c2 | 764 | buf = (char *) xrealloc (buf, bufsize); |
252b5132 RH |
765 | } |
766 | c = getc (file); | |
767 | } | |
768 | ||
769 | buf[len] = '\0'; | |
770 | ||
1579bae1 | 771 | if (bfd_hash_lookup (link_info.keep_hash, buf, TRUE, TRUE) == NULL) |
252b5132 RH |
772 | einfo (_("%P%F: bfd_hash_lookup for insertion failed: %E\n")); |
773 | } | |
774 | } | |
775 | ||
776 | if (link_info.strip != strip_none) | |
777 | einfo (_("%P: `-retain-symbols-file' overrides `-s' and `-S'\n")); | |
778 | ||
5ed6aba4 | 779 | free (buf); |
252b5132 | 780 | link_info.strip = strip_some; |
d9313f4f | 781 | fclose (file); |
252b5132 RH |
782 | } |
783 | \f | |
784 | /* Callbacks from the BFD linker routines. */ | |
785 | ||
786 | /* This is called when BFD has decided to include an archive member in | |
787 | a link. */ | |
788 | ||
b34976b6 | 789 | static bfd_boolean |
e1fffbe6 | 790 | add_archive_element (struct bfd_link_info *info, |
1579bae1 | 791 | bfd *abfd, |
5d3236ee DK |
792 | const char *name, |
793 | bfd **subsbfd ATTRIBUTE_UNUSED) | |
252b5132 RH |
794 | { |
795 | lang_input_statement_type *input; | |
5d3236ee | 796 | lang_input_statement_type orig_input; |
252b5132 | 797 | |
1e9cc1c2 NC |
798 | input = (lang_input_statement_type *) |
799 | xcalloc (1, sizeof (lang_input_statement_type)); | |
fb47deda | 800 | input->header.type = lang_input_statement_enum; |
252b5132 RH |
801 | input->filename = abfd->filename; |
802 | input->local_sym_name = abfd->filename; | |
803 | input->the_bfd = abfd; | |
252b5132 | 804 | |
5d3236ee DK |
805 | /* Save the original data for trace files/tries below, as plugins |
806 | (if enabled) may possibly alter it to point to a replacement | |
807 | BFD, but we still want to output the original BFD filename. */ | |
808 | orig_input = *input; | |
809 | #ifdef ENABLE_PLUGINS | |
b95a0a31 | 810 | if (link_info.lto_plugin_active) |
5d3236ee DK |
811 | { |
812 | /* We must offer this archive member to the plugins to claim. */ | |
35a1e5f3 L |
813 | plugin_maybe_claim (input); |
814 | if (input->flags.claimed) | |
5d3236ee | 815 | { |
b95a0a31 L |
816 | if (no_more_claiming) |
817 | { | |
818 | /* Don't claim new IR symbols after all IR symbols have | |
819 | been claimed. */ | |
820 | if (trace_files || verbose) | |
821 | info_msg ("%I: no new IR symbols to claimi\n", | |
822 | &orig_input); | |
823 | input->flags.claimed = 0; | |
824 | return FALSE; | |
825 | } | |
35a1e5f3 L |
826 | input->flags.claim_archive = TRUE; |
827 | *subsbfd = input->the_bfd; | |
5d3236ee DK |
828 | } |
829 | } | |
830 | #endif /* ENABLE_PLUGINS */ | |
831 | ||
252b5132 RH |
832 | ldlang_add_file (input); |
833 | ||
1579bae1 | 834 | if (config.map_file != NULL) |
252b5132 | 835 | { |
b34976b6 | 836 | static bfd_boolean header_printed; |
252b5132 RH |
837 | struct bfd_link_hash_entry *h; |
838 | bfd *from; | |
839 | int len; | |
840 | ||
e1fffbe6 | 841 | h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); |
252b5132 RH |
842 | |
843 | if (h == NULL) | |
844 | from = NULL; | |
845 | else | |
846 | { | |
847 | switch (h->type) | |
848 | { | |
849 | default: | |
850 | from = NULL; | |
851 | break; | |
852 | ||
853 | case bfd_link_hash_defined: | |
854 | case bfd_link_hash_defweak: | |
855 | from = h->u.def.section->owner; | |
856 | break; | |
857 | ||
858 | case bfd_link_hash_undefined: | |
859 | case bfd_link_hash_undefweak: | |
860 | from = h->u.undef.abfd; | |
861 | break; | |
862 | ||
863 | case bfd_link_hash_common: | |
864 | from = h->u.c.p->section->owner; | |
865 | break; | |
866 | } | |
867 | } | |
868 | ||
0aa7f586 | 869 | if (!header_printed) |
252b5132 | 870 | { |
1273da04 | 871 | minfo (_("Archive member included to satisfy reference by file (symbol)\n\n")); |
b34976b6 | 872 | header_printed = TRUE; |
252b5132 RH |
873 | } |
874 | ||
3860d2b4 AM |
875 | if (abfd->my_archive == NULL |
876 | || bfd_is_thin_archive (abfd->my_archive)) | |
252b5132 RH |
877 | { |
878 | minfo ("%s", bfd_get_filename (abfd)); | |
879 | len = strlen (bfd_get_filename (abfd)); | |
880 | } | |
881 | else | |
882 | { | |
3860d2b4 | 883 | minfo ("%s(%s)", bfd_get_filename (abfd->my_archive), |
252b5132 | 884 | bfd_get_filename (abfd)); |
3860d2b4 | 885 | len = (strlen (bfd_get_filename (abfd->my_archive)) |
252b5132 RH |
886 | + strlen (bfd_get_filename (abfd)) |
887 | + 2); | |
888 | } | |
889 | ||
890 | if (len >= 29) | |
891 | { | |
892 | print_nl (); | |
893 | len = 0; | |
894 | } | |
895 | while (len < 30) | |
896 | { | |
897 | print_space (); | |
898 | ++len; | |
899 | } | |
900 | ||
901 | if (from != NULL) | |
902 | minfo ("%B ", from); | |
903 | if (h != NULL) | |
904 | minfo ("(%T)\n", h->root.string); | |
905 | else | |
906 | minfo ("(%s)\n", name); | |
907 | } | |
908 | ||
cd6f1cf3 | 909 | if (trace_files || verbose) |
5d3236ee | 910 | info_msg ("%I\n", &orig_input); |
b34976b6 | 911 | return TRUE; |
252b5132 RH |
912 | } |
913 | ||
914 | /* This is called when BFD has discovered a symbol which is defined | |
915 | multiple times. */ | |
916 | ||
1a72702b | 917 | static void |
24f58f47 AM |
918 | multiple_definition (struct bfd_link_info *info, |
919 | struct bfd_link_hash_entry *h, | |
1579bae1 AM |
920 | bfd *nbfd, |
921 | asection *nsec, | |
922 | bfd_vma nval) | |
252b5132 | 923 | { |
24f58f47 AM |
924 | const char *name; |
925 | bfd *obfd; | |
926 | asection *osec; | |
927 | bfd_vma oval; | |
928 | ||
929 | if (info->allow_multiple_definition) | |
1a72702b | 930 | return; |
24f58f47 AM |
931 | |
932 | switch (h->type) | |
933 | { | |
934 | case bfd_link_hash_defined: | |
935 | osec = h->u.def.section; | |
936 | oval = h->u.def.value; | |
937 | obfd = h->u.def.section->owner; | |
938 | break; | |
939 | case bfd_link_hash_indirect: | |
940 | osec = bfd_ind_section_ptr; | |
941 | oval = 0; | |
942 | obfd = NULL; | |
943 | break; | |
944 | default: | |
945 | abort (); | |
946 | } | |
947 | ||
948 | /* Ignore a redefinition of an absolute symbol to the | |
949 | same value; it's harmless. */ | |
950 | if (h->type == bfd_link_hash_defined | |
951 | && bfd_is_abs_section (osec) | |
952 | && bfd_is_abs_section (nsec) | |
953 | && nval == oval) | |
1a72702b | 954 | return; |
24f58f47 | 955 | |
252b5132 RH |
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. | |
9e2278f5 AM |
959 | FIXME: It would be cleaner to somehow ignore symbols defined in |
960 | sections which are being discarded. */ | |
252b5132 | 961 | if ((osec->output_section != NULL |
0aa7f586 | 962 | && !bfd_is_abs_section (osec) |
252b5132 RH |
963 | && bfd_is_abs_section (osec->output_section)) |
964 | || (nsec->output_section != NULL | |
0aa7f586 | 965 | && !bfd_is_abs_section (nsec) |
252b5132 | 966 | && bfd_is_abs_section (nsec->output_section))) |
1a72702b | 967 | return; |
252b5132 | 968 | |
24f58f47 AM |
969 | name = h->root.string; |
970 | if (nbfd == NULL) | |
971 | { | |
972 | nbfd = obfd; | |
973 | nsec = osec; | |
974 | nval = oval; | |
975 | obfd = NULL; | |
976 | } | |
252b5132 RH |
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 | 981 | |
13761a11 | 982 | if (RELAXATION_ENABLED_BY_USER) |
9b14b192 NC |
983 | { |
984 | einfo (_("%P: Disabling relaxation: it will not work with multiple definitions\n")); | |
13761a11 | 985 | DISABLE_RELAXATION; |
9b14b192 | 986 | } |
252b5132 RH |
987 | } |
988 | ||
989 | /* This is called when there is a definition of a common symbol, or | |
990 | when a common symbol is found for a symbol that is already defined, | |
991 | or when two common symbols are found. We only do something if | |
992 | -warn-common was used. */ | |
993 | ||
1a72702b | 994 | static void |
1579bae1 | 995 | multiple_common (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
24f58f47 | 996 | struct bfd_link_hash_entry *h, |
1579bae1 AM |
997 | bfd *nbfd, |
998 | enum bfd_link_hash_type ntype, | |
999 | bfd_vma nsize) | |
252b5132 | 1000 | { |
24f58f47 AM |
1001 | const char *name; |
1002 | bfd *obfd; | |
1003 | enum bfd_link_hash_type otype; | |
1004 | bfd_vma osize; | |
1005 | ||
1006 | if (!config.warn_common) | |
1a72702b | 1007 | return; |
252b5132 | 1008 | |
24f58f47 AM |
1009 | name = h->root.string; |
1010 | otype = h->type; | |
1011 | if (otype == bfd_link_hash_common) | |
1012 | { | |
1013 | obfd = h->u.c.p->section->owner; | |
1014 | osize = h->u.c.size; | |
1015 | } | |
1016 | else if (otype == bfd_link_hash_defined | |
1017 | || otype == bfd_link_hash_defweak) | |
1018 | { | |
1019 | obfd = h->u.def.section->owner; | |
1020 | osize = 0; | |
1021 | } | |
1022 | else | |
1023 | { | |
1024 | /* FIXME: It would nice if we could report the BFD which defined | |
1025 | an indirect symbol, but we don't have anywhere to store the | |
1026 | information. */ | |
1027 | obfd = NULL; | |
1028 | osize = 0; | |
1029 | } | |
1030 | ||
252b5132 RH |
1031 | if (ntype == bfd_link_hash_defined |
1032 | || ntype == bfd_link_hash_defweak | |
1033 | || ntype == bfd_link_hash_indirect) | |
1034 | { | |
1035 | ASSERT (otype == bfd_link_hash_common); | |
1036 | einfo (_("%B: warning: definition of `%T' overriding common\n"), | |
1037 | nbfd, name); | |
1038 | if (obfd != NULL) | |
1039 | einfo (_("%B: warning: common is here\n"), obfd); | |
1040 | } | |
1041 | else if (otype == bfd_link_hash_defined | |
1042 | || otype == bfd_link_hash_defweak | |
1043 | || otype == bfd_link_hash_indirect) | |
1044 | { | |
1045 | ASSERT (ntype == bfd_link_hash_common); | |
1046 | einfo (_("%B: warning: common of `%T' overridden by definition\n"), | |
1047 | nbfd, name); | |
1048 | if (obfd != NULL) | |
1049 | einfo (_("%B: warning: defined here\n"), obfd); | |
1050 | } | |
1051 | else | |
1052 | { | |
1053 | ASSERT (otype == bfd_link_hash_common && ntype == bfd_link_hash_common); | |
1054 | if (osize > nsize) | |
1055 | { | |
1056 | einfo (_("%B: warning: common of `%T' overridden by larger common\n"), | |
1057 | nbfd, name); | |
1058 | if (obfd != NULL) | |
1059 | einfo (_("%B: warning: larger common is here\n"), obfd); | |
1060 | } | |
1061 | else if (nsize > osize) | |
1062 | { | |
1063 | einfo (_("%B: warning: common of `%T' overriding smaller common\n"), | |
1064 | nbfd, name); | |
1065 | if (obfd != NULL) | |
1066 | einfo (_("%B: warning: smaller common is here\n"), obfd); | |
1067 | } | |
1068 | else | |
1069 | { | |
1070 | einfo (_("%B: warning: multiple common of `%T'\n"), nbfd, name); | |
1071 | if (obfd != NULL) | |
1072 | einfo (_("%B: warning: previous common is here\n"), obfd); | |
1073 | } | |
1074 | } | |
252b5132 RH |
1075 | } |
1076 | ||
1077 | /* This is called when BFD has discovered a set element. H is the | |
1078 | entry in the linker hash table for the set. SECTION and VALUE | |
1079 | represent a value which should be added to the set. */ | |
1080 | ||
1a72702b | 1081 | static void |
1579bae1 AM |
1082 | add_to_set (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1083 | struct bfd_link_hash_entry *h, | |
1084 | bfd_reloc_code_real_type reloc, | |
1085 | bfd *abfd, | |
1086 | asection *section, | |
1087 | bfd_vma value) | |
252b5132 RH |
1088 | { |
1089 | if (config.warn_constructors) | |
1090 | einfo (_("%P: warning: global constructor %s used\n"), | |
1091 | h->root.string); | |
1092 | ||
0aa7f586 | 1093 | if (!config.build_constructors) |
1a72702b | 1094 | return; |
252b5132 | 1095 | |
1579bae1 | 1096 | ldctor_add_set_entry (h, reloc, NULL, section, value); |
252b5132 RH |
1097 | |
1098 | if (h->type == bfd_link_hash_new) | |
1099 | { | |
1100 | h->type = bfd_link_hash_undefined; | |
1101 | h->u.undef.abfd = abfd; | |
1102 | /* We don't call bfd_link_add_undef to add this to the list of | |
1103 | undefined symbols because we are going to define it | |
1104 | ourselves. */ | |
1105 | } | |
252b5132 RH |
1106 | } |
1107 | ||
1108 | /* This is called when BFD has discovered a constructor. This is only | |
1109 | called for some object file formats--those which do not handle | |
1110 | constructors in some more clever fashion. This is similar to | |
1111 | adding an element to a set, but less general. */ | |
1112 | ||
1a72702b | 1113 | static void |
1579bae1 AM |
1114 | constructor_callback (struct bfd_link_info *info, |
1115 | bfd_boolean constructor, | |
1116 | const char *name, | |
1117 | bfd *abfd, | |
1118 | asection *section, | |
1119 | bfd_vma value) | |
252b5132 RH |
1120 | { |
1121 | char *s; | |
1122 | struct bfd_link_hash_entry *h; | |
1123 | char set_name[1 + sizeof "__CTOR_LIST__"]; | |
1124 | ||
1125 | if (config.warn_constructors) | |
1126 | einfo (_("%P: warning: global constructor %s used\n"), name); | |
1127 | ||
0aa7f586 | 1128 | if (!config.build_constructors) |
1a72702b | 1129 | return; |
252b5132 RH |
1130 | |
1131 | /* Ensure that BFD_RELOC_CTOR exists now, so that we can give a | |
1132 | useful error message. */ | |
0e86e20e | 1133 | if (bfd_reloc_type_lookup (info->output_bfd, BFD_RELOC_CTOR) == NULL |
0e1862bb | 1134 | && (bfd_link_relocatable (info) |
252b5132 RH |
1135 | || bfd_reloc_type_lookup (abfd, BFD_RELOC_CTOR) == NULL)) |
1136 | einfo (_("%P%F: BFD backend error: BFD_RELOC_CTOR unsupported\n")); | |
1137 | ||
1138 | s = set_name; | |
1139 | if (bfd_get_symbol_leading_char (abfd) != '\0') | |
1140 | *s++ = bfd_get_symbol_leading_char (abfd); | |
1141 | if (constructor) | |
1142 | strcpy (s, "__CTOR_LIST__"); | |
1143 | else | |
1144 | strcpy (s, "__DTOR_LIST__"); | |
1145 | ||
b34976b6 | 1146 | h = bfd_link_hash_lookup (info->hash, set_name, TRUE, TRUE, TRUE); |
252b5132 RH |
1147 | if (h == (struct bfd_link_hash_entry *) NULL) |
1148 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); | |
1149 | if (h->type == bfd_link_hash_new) | |
1150 | { | |
1151 | h->type = bfd_link_hash_undefined; | |
1152 | h->u.undef.abfd = abfd; | |
1153 | /* We don't call bfd_link_add_undef to add this to the list of | |
1154 | undefined symbols because we are going to define it | |
1155 | ourselves. */ | |
1156 | } | |
1157 | ||
1158 | ldctor_add_set_entry (h, BFD_RELOC_CTOR, name, section, value); | |
252b5132 RH |
1159 | } |
1160 | ||
1161 | /* A structure used by warning_callback to pass information through | |
1162 | bfd_map_over_sections. */ | |
1163 | ||
0125cdf2 NC |
1164 | struct warning_callback_info |
1165 | { | |
b34976b6 | 1166 | bfd_boolean found; |
252b5132 RH |
1167 | const char *warning; |
1168 | const char *symbol; | |
1169 | asymbol **asymbols; | |
1170 | }; | |
1171 | ||
4c6d802e L |
1172 | /* Look through the relocs to see if we can find a plausible address |
1173 | for SYMBOL in ABFD. Return TRUE if found. Otherwise return FALSE. */ | |
1174 | ||
1175 | static bfd_boolean | |
1176 | symbol_warning (const char *warning, const char *symbol, bfd *abfd) | |
1177 | { | |
1178 | struct warning_callback_info cinfo; | |
1179 | ||
1180 | if (!bfd_generic_link_read_symbols (abfd)) | |
1181 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
1182 | ||
1183 | cinfo.found = FALSE; | |
1184 | cinfo.warning = warning; | |
1185 | cinfo.symbol = symbol; | |
1186 | cinfo.asymbols = bfd_get_outsymbols (abfd); | |
1187 | bfd_map_over_sections (abfd, warning_find_reloc, &cinfo); | |
1188 | return cinfo.found; | |
1189 | } | |
1190 | ||
252b5132 RH |
1191 | /* This is called when there is a reference to a warning symbol. */ |
1192 | ||
1a72702b | 1193 | static void |
1579bae1 AM |
1194 | warning_callback (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1195 | const char *warning, | |
1196 | const char *symbol, | |
1197 | bfd *abfd, | |
1198 | asection *section, | |
1199 | bfd_vma address) | |
252b5132 RH |
1200 | { |
1201 | /* This is a hack to support warn_multiple_gp. FIXME: This should | |
1202 | have a cleaner interface, but what? */ | |
0aa7f586 | 1203 | if (!config.warn_multiple_gp |
252b5132 | 1204 | && strcmp (warning, "using multiple gp values") == 0) |
1a72702b | 1205 | return; |
252b5132 RH |
1206 | |
1207 | if (section != NULL) | |
300475fe | 1208 | einfo ("%C: %s%s\n", abfd, section, address, _("warning: "), warning); |
252b5132 | 1209 | else if (abfd == NULL) |
300475fe | 1210 | einfo ("%P: %s%s\n", _("warning: "), warning); |
252b5132 | 1211 | else if (symbol == NULL) |
300475fe | 1212 | einfo ("%B: %s%s\n", abfd, _("warning: "), warning); |
0aa7f586 | 1213 | else if (!symbol_warning (warning, symbol, abfd)) |
252b5132 | 1214 | { |
4c6d802e L |
1215 | bfd *b; |
1216 | /* Search all input files for a reference to SYMBOL. */ | |
c72f2fb2 | 1217 | for (b = info->input_bfds; b; b = b->link.next) |
4c6d802e | 1218 | if (b != abfd && symbol_warning (warning, symbol, b)) |
1a72702b | 1219 | return; |
4c6d802e | 1220 | einfo ("%B: %s%s\n", abfd, _("warning: "), warning); |
252b5132 | 1221 | } |
252b5132 RH |
1222 | } |
1223 | ||
1224 | /* This is called by warning_callback for each section. It checks the | |
1225 | relocs of the section to see if it can find a reference to the | |
1226 | symbol which triggered the warning. If it can, it uses the reloc | |
1227 | to give an error message with a file and line number. */ | |
1228 | ||
1229 | static void | |
1579bae1 | 1230 | warning_find_reloc (bfd *abfd, asection *sec, void *iarg) |
252b5132 | 1231 | { |
1e9cc1c2 | 1232 | struct warning_callback_info *info = (struct warning_callback_info *) iarg; |
252b5132 RH |
1233 | long relsize; |
1234 | arelent **relpp; | |
1235 | long relcount; | |
1236 | arelent **p, **pend; | |
1237 | ||
1238 | if (info->found) | |
1239 | return; | |
1240 | ||
1241 | relsize = bfd_get_reloc_upper_bound (abfd, sec); | |
1242 | if (relsize < 0) | |
1243 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1244 | if (relsize == 0) | |
1245 | return; | |
1246 | ||
1e9cc1c2 | 1247 | relpp = (arelent **) xmalloc (relsize); |
252b5132 RH |
1248 | relcount = bfd_canonicalize_reloc (abfd, sec, relpp, info->asymbols); |
1249 | if (relcount < 0) | |
1250 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1251 | ||
1252 | p = relpp; | |
1253 | pend = p + relcount; | |
1254 | for (; p < pend && *p != NULL; p++) | |
1255 | { | |
1256 | arelent *q = *p; | |
1257 | ||
1258 | if (q->sym_ptr_ptr != NULL | |
1259 | && *q->sym_ptr_ptr != NULL | |
1260 | && strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), info->symbol) == 0) | |
1261 | { | |
1262 | /* We found a reloc for the symbol we are looking for. */ | |
300475fe HPN |
1263 | einfo ("%C: %s%s\n", abfd, sec, q->address, _("warning: "), |
1264 | info->warning); | |
b34976b6 | 1265 | info->found = TRUE; |
252b5132 RH |
1266 | break; |
1267 | } | |
1268 | } | |
1269 | ||
1270 | free (relpp); | |
1271 | } | |
1272 | ||
1273 | /* This is called when an undefined symbol is found. */ | |
1274 | ||
1a72702b | 1275 | static void |
0e86e20e | 1276 | undefined_symbol (struct bfd_link_info *info, |
1579bae1 AM |
1277 | const char *name, |
1278 | bfd *abfd, | |
1279 | asection *section, | |
1280 | bfd_vma address, | |
0b28295d | 1281 | bfd_boolean error) |
252b5132 RH |
1282 | { |
1283 | static char *error_name; | |
1284 | static unsigned int error_count; | |
1285 | ||
1286 | #define MAX_ERRORS_IN_A_ROW 5 | |
1287 | ||
0e86e20e AM |
1288 | if (info->ignore_hash != NULL |
1289 | && bfd_hash_lookup (info->ignore_hash, name, FALSE, FALSE) != NULL) | |
1a72702b | 1290 | return; |
0e86e20e | 1291 | |
252b5132 RH |
1292 | if (config.warn_once) |
1293 | { | |
252b5132 | 1294 | /* Only warn once about a particular undefined symbol. */ |
0e86e20e | 1295 | add_ignoresym (info, name); |
252b5132 RH |
1296 | } |
1297 | ||
1298 | /* We never print more than a reasonable number of errors in a row | |
1299 | for a single symbol. */ | |
1579bae1 | 1300 | if (error_name != NULL |
252b5132 RH |
1301 | && strcmp (name, error_name) == 0) |
1302 | ++error_count; | |
1303 | else | |
1304 | { | |
1305 | error_count = 0; | |
1579bae1 | 1306 | if (error_name != NULL) |
252b5132 | 1307 | free (error_name); |
d1b2b2dc | 1308 | error_name = xstrdup (name); |
252b5132 RH |
1309 | } |
1310 | ||
1311 | if (section != NULL) | |
1312 | { | |
1313 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1314 | { |
0b28295d ILT |
1315 | if (error) |
1316 | einfo (_("%X%C: undefined reference to `%T'\n"), | |
1317 | abfd, section, address, name); | |
1318 | else | |
1319 | einfo (_("%C: warning: undefined reference to `%T'\n"), | |
1320 | abfd, section, address, name); | |
b6f29aaa | 1321 | } |
252b5132 | 1322 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1323 | { |
1324 | if (error) | |
1325 | einfo (_("%X%D: more undefined references to `%T' follow\n"), | |
1326 | abfd, section, address, name); | |
1327 | else | |
1328 | einfo (_("%D: warning: more undefined references to `%T' follow\n"), | |
1329 | abfd, section, address, name); | |
1330 | } | |
1331 | else if (error) | |
1332 | einfo ("%X"); | |
252b5132 RH |
1333 | } |
1334 | else | |
1335 | { | |
1336 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1337 | { |
0b28295d ILT |
1338 | if (error) |
1339 | einfo (_("%X%B: undefined reference to `%T'\n"), | |
1340 | abfd, name); | |
1341 | else | |
1342 | einfo (_("%B: warning: undefined reference to `%T'\n"), | |
1343 | abfd, name); | |
b6f29aaa | 1344 | } |
252b5132 | 1345 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1346 | { |
1347 | if (error) | |
1348 | einfo (_("%X%B: more undefined references to `%T' follow\n"), | |
1349 | abfd, name); | |
1350 | else | |
1351 | einfo (_("%B: warning: more undefined references to `%T' follow\n"), | |
1352 | abfd, name); | |
1353 | } | |
1354 | else if (error) | |
1355 | einfo ("%X"); | |
252b5132 | 1356 | } |
252b5132 RH |
1357 | } |
1358 | ||
8aae64e6 AO |
1359 | /* Counter to limit the number of relocation overflow error messages |
1360 | to print. Errors are printed as it is decremented. When it's | |
1361 | called and the counter is zero, a final message is printed | |
1362 | indicating more relocations were omitted. When it gets to -1, no | |
1363 | such errors are printed. If it's initially set to a value less | |
1364 | than -1, all such errors will be printed (--verbose does this). */ | |
1365 | ||
1366 | int overflow_cutoff_limit = 10; | |
1367 | ||
252b5132 RH |
1368 | /* This is called when a reloc overflows. */ |
1369 | ||
1a72702b | 1370 | static void |
0e86e20e | 1371 | reloc_overflow (struct bfd_link_info *info, |
dfeffb9f | 1372 | struct bfd_link_hash_entry *entry, |
1579bae1 AM |
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 | 1380 | if (overflow_cutoff_limit == -1) |
1a72702b | 1381 | return; |
8aae64e6 | 1382 | |
270396f2 | 1383 | einfo ("%X%H:", abfd, section, address); |
8aae64e6 AO |
1384 | |
1385 | if (overflow_cutoff_limit >= 0 | |
1386 | && overflow_cutoff_limit-- == 0) | |
1387 | { | |
1388 | einfo (_(" additional relocation overflows omitted from the output\n")); | |
1a72702b | 1389 | return; |
8aae64e6 AO |
1390 | } |
1391 | ||
dfeffb9f L |
1392 | if (entry) |
1393 | { | |
1394 | while (entry->type == bfd_link_hash_indirect | |
1395 | || entry->type == bfd_link_hash_warning) | |
1396 | entry = entry->u.i.link; | |
1397 | switch (entry->type) | |
1398 | { | |
1399 | case bfd_link_hash_undefined: | |
1400 | case bfd_link_hash_undefweak: | |
0aa7f586 AM |
1401 | einfo (_(" relocation truncated to fit: " |
1402 | "%s against undefined symbol `%T'"), | |
dfeffb9f L |
1403 | reloc_name, entry->root.string); |
1404 | break; | |
1405 | case bfd_link_hash_defined: | |
1406 | case bfd_link_hash_defweak: | |
0aa7f586 AM |
1407 | einfo (_(" relocation truncated to fit: " |
1408 | "%s against symbol `%T' defined in %A section in %B"), | |
dfeffb9f | 1409 | reloc_name, entry->root.string, |
a6e1b90f L |
1410 | entry->u.def.section, |
1411 | entry->u.def.section == bfd_abs_section_ptr | |
0e86e20e | 1412 | ? info->output_bfd : entry->u.def.section->owner); |
dfeffb9f L |
1413 | break; |
1414 | default: | |
1415 | abort (); | |
1416 | break; | |
1417 | } | |
1418 | } | |
1419 | else | |
1420 | einfo (_(" relocation truncated to fit: %s against `%T'"), | |
1421 | reloc_name, name); | |
252b5132 RH |
1422 | if (addend != 0) |
1423 | einfo ("+%v", addend); | |
1424 | einfo ("\n"); | |
252b5132 RH |
1425 | } |
1426 | ||
1427 | /* This is called when a dangerous relocation is made. */ | |
1428 | ||
1a72702b | 1429 | static void |
1579bae1 AM |
1430 | reloc_dangerous (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1431 | const char *message, | |
1432 | bfd *abfd, | |
1433 | asection *section, | |
1434 | bfd_vma address) | |
252b5132 | 1435 | { |
270396f2 | 1436 | einfo (_("%X%H: dangerous relocation: %s\n"), |
e1fffbe6 | 1437 | abfd, section, address, message); |
252b5132 RH |
1438 | } |
1439 | ||
1440 | /* This is called when a reloc is being generated attached to a symbol | |
1441 | that is not being output. */ | |
1442 | ||
1a72702b | 1443 | static void |
1579bae1 AM |
1444 | unattached_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1445 | const char *name, | |
1446 | bfd *abfd, | |
1447 | asection *section, | |
1448 | bfd_vma address) | |
252b5132 | 1449 | { |
270396f2 | 1450 | einfo (_("%X%H: reloc refers to symbol `%T' which is not being output\n"), |
e1fffbe6 | 1451 | abfd, section, address, name); |
252b5132 RH |
1452 | } |
1453 | ||
1454 | /* This is called if link_info.notice_all is set, or when a symbol in | |
1455 | link_info.notice_hash is found. Symbols are put in notice_hash | |
5d3236ee DK |
1456 | using the -y option, while notice_all is set if the --cref option |
1457 | has been supplied, or if there are any NOCROSSREFS sections in the | |
1458 | linker script; and if plugins are active, since they need to monitor | |
1459 | all references from non-IR files. */ | |
252b5132 | 1460 | |
b34976b6 | 1461 | static bfd_boolean |
1579bae1 | 1462 | notice (struct bfd_link_info *info, |
35ed3f94 | 1463 | struct bfd_link_hash_entry *h, |
46135103 | 1464 | struct bfd_link_hash_entry *inh ATTRIBUTE_UNUSED, |
1579bae1 AM |
1465 | bfd *abfd, |
1466 | asection *section, | |
16d96b5b | 1467 | bfd_vma value, |
46135103 | 1468 | flagword flags ATTRIBUTE_UNUSED) |
252b5132 | 1469 | { |
35ed3f94 AM |
1470 | const char *name; |
1471 | ||
1472 | if (h == NULL) | |
5061a885 AM |
1473 | { |
1474 | if (command_line.cref || nocrossref_list != NULL) | |
1e9cc1c2 | 1475 | return handle_asneeded_cref (abfd, (enum notice_asneeded_action) value); |
5061a885 AM |
1476 | return TRUE; |
1477 | } | |
1478 | ||
35ed3f94 | 1479 | name = h->root.string; |
5d3236ee | 1480 | if (info->notice_hash != NULL |
9e2278f5 | 1481 | && bfd_hash_lookup (info->notice_hash, name, FALSE, FALSE) != NULL) |
252b5132 RH |
1482 | { |
1483 | if (bfd_is_und_section (section)) | |
1484 | einfo ("%B: reference to %s\n", abfd, name); | |
1485 | else | |
1486 | einfo ("%B: definition of %s\n", abfd, name); | |
1487 | } | |
1488 | ||
1489 | if (command_line.cref || nocrossref_list != NULL) | |
1490 | add_cref (name, abfd, section, value); | |
1491 | ||
b34976b6 | 1492 | return TRUE; |
252b5132 | 1493 | } |