Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Main program of GNU linker. |
250d07de | 2 | Copyright (C) 1991-2021 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" | |
1ff6de03 | 28 | #include "ctf-api.h" |
5af11cab | 29 | #include "filenames.h" |
cae64165 | 30 | #include "elf/common.h" |
252b5132 RH |
31 | |
32 | #include "ld.h" | |
33 | #include "ldmain.h" | |
34 | #include "ldmisc.h" | |
35 | #include "ldwrite.h" | |
252b5132 RH |
36 | #include "ldexp.h" |
37 | #include "ldlang.h" | |
df2a7313 | 38 | #include <ldgram.h> |
252b5132 RH |
39 | #include "ldlex.h" |
40 | #include "ldfile.h" | |
b71e2778 | 41 | #include "ldemul.h" |
252b5132 | 42 | #include "ldctor.h" |
0381901e | 43 | #if BFD_SUPPORTS_PLUGINS |
5d3236ee DK |
44 | #include "plugin.h" |
45 | #include "plugin-api.h" | |
0381901e | 46 | #endif /* BFD_SUPPORTS_PLUGINS */ |
252b5132 | 47 | |
0125cdf2 | 48 | /* Somewhere above, sys/stat.h got included. */ |
252b5132 RH |
49 | #if !defined(S_ISDIR) && defined(S_IFDIR) |
50 | #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) | |
51 | #endif | |
52 | ||
53 | #include <string.h> | |
54 | ||
9c8ebd6a DJ |
55 | #ifndef TARGET_SYSTEM_ROOT |
56 | #define TARGET_SYSTEM_ROOT "" | |
57 | #endif | |
58 | ||
252b5132 RH |
59 | /* EXPORTS */ |
60 | ||
53d25da6 AM |
61 | FILE *saved_script_handle = NULL; |
62 | FILE *previous_script_handle = NULL; | |
f38a2680 | 63 | bool force_make_executable = false; |
53d25da6 | 64 | |
252b5132 RH |
65 | char *default_target; |
66 | const char *output_filename = "a.out"; | |
67 | ||
68 | /* Name this program was invoked by. */ | |
69 | char *program_name; | |
70 | ||
9c8ebd6a | 71 | /* The prefix for system library directories. */ |
e2243057 | 72 | const char *ld_sysroot; |
9c8ebd6a | 73 | |
3fe38064 | 74 | /* The canonical representation of ld_sysroot. */ |
0aa7f586 | 75 | char *ld_canon_sysroot; |
3fe38064 NC |
76 | int ld_canon_sysroot_len; |
77 | ||
e8044f35 | 78 | /* Set by -G argument, for targets like MIPS ELF. */ |
252b5132 RH |
79 | int g_switch_value = 8; |
80 | ||
81 | /* Nonzero means print names of input files as processed. */ | |
727a29ba | 82 | unsigned int trace_files; |
252b5132 | 83 | |
cd6f1cf3 | 84 | /* Nonzero means report actions taken by the linker, and describe the linker script in use. */ |
f38a2680 | 85 | bool verbose; |
252b5132 RH |
86 | |
87 | /* Nonzero means version number was printed, so exit successfully | |
88 | instead of complaining if no input files are given. */ | |
f38a2680 | 89 | bool version_printed; |
252b5132 | 90 | |
b34976b6 | 91 | /* TRUE if we should demangle symbol names. */ |
f38a2680 | 92 | bool demangling; |
252b5132 RH |
93 | |
94 | args_type command_line; | |
95 | ||
96 | ld_config_type config; | |
97 | ||
bcaa7b3e L |
98 | sort_type sort_section; |
99 | ||
e2243057 RS |
100 | static const char *get_sysroot |
101 | (int, char **); | |
0125cdf2 | 102 | static char *get_emulation |
1579bae1 | 103 | (int, char **); |
f38a2680 | 104 | static bool add_archive_element |
5d3236ee | 105 | (struct bfd_link_info *, bfd *, const char *, bfd **); |
1a72702b | 106 | static void multiple_definition |
24f58f47 | 107 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
1579bae1 | 108 | bfd *, asection *, bfd_vma); |
1a72702b | 109 | static void multiple_common |
24f58f47 AM |
110 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
111 | bfd *, enum bfd_link_hash_type, bfd_vma); | |
1a72702b | 112 | static void add_to_set |
1579bae1 AM |
113 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
114 | bfd_reloc_code_real_type, bfd *, asection *, bfd_vma); | |
1a72702b | 115 | static void constructor_callback |
f38a2680 | 116 | (struct bfd_link_info *, bool, const char *, bfd *, |
1579bae1 | 117 | asection *, bfd_vma); |
1a72702b | 118 | static void warning_callback |
1579bae1 AM |
119 | (struct bfd_link_info *, const char *, const char *, bfd *, |
120 | asection *, bfd_vma); | |
0125cdf2 | 121 | static void warning_find_reloc |
1579bae1 | 122 | (bfd *, asection *, void *); |
1a72702b | 123 | static void undefined_symbol |
1579bae1 | 124 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma, |
f38a2680 | 125 | bool); |
1a72702b | 126 | static void reloc_overflow |
dfeffb9f L |
127 | (struct bfd_link_info *, struct bfd_link_hash_entry *, const char *, |
128 | const char *, bfd_vma, bfd *, asection *, bfd_vma); | |
1a72702b | 129 | static void reloc_dangerous |
1579bae1 | 130 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
1a72702b | 131 | static void unattached_reloc |
1579bae1 | 132 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
f38a2680 | 133 | static bool notice |
35ed3f94 | 134 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
46135103 | 135 | struct bfd_link_hash_entry *, bfd *, asection *, bfd_vma, flagword); |
0125cdf2 NC |
136 | |
137 | static struct bfd_link_callbacks link_callbacks = | |
138 | { | |
252b5132 RH |
139 | add_archive_element, |
140 | multiple_definition, | |
141 | multiple_common, | |
142 | add_to_set, | |
143 | constructor_callback, | |
144 | warning_callback, | |
145 | undefined_symbol, | |
146 | reloc_overflow, | |
147 | reloc_dangerous, | |
148 | unattached_reloc, | |
e1fffbe6 | 149 | notice, |
2889e75b | 150 | einfo, |
49fa1e15 AM |
151 | info_msg, |
152 | minfo, | |
1ff6de03 | 153 | ldlang_override_segment_assignment, |
3d16b64e NA |
154 | ldlang_ctf_acquire_strings, |
155 | NULL, | |
156 | ldlang_ctf_new_dynsym, | |
1ff6de03 | 157 | ldlang_write_ctf_late |
252b5132 RH |
158 | }; |
159 | ||
3b66a141 | 160 | static bfd_assert_handler_type default_bfd_assert_handler; |
4519d071 | 161 | static bfd_error_handler_type default_bfd_error_handler; |
3b66a141 | 162 | |
252b5132 RH |
163 | struct bfd_link_info link_info; |
164 | \f | |
f37b21b4 RM |
165 | struct dependency_file |
166 | { | |
167 | struct dependency_file *next; | |
168 | char *name; | |
169 | }; | |
170 | ||
171 | static struct dependency_file *dependency_files, *dependency_files_tail; | |
172 | ||
173 | void | |
174 | track_dependency_files (const char *filename) | |
175 | { | |
176 | struct dependency_file *dep | |
177 | = (struct dependency_file *) xmalloc (sizeof (*dep)); | |
178 | dep->name = xstrdup (filename); | |
179 | dep->next = NULL; | |
180 | if (dependency_files == NULL) | |
181 | dependency_files = dep; | |
182 | else | |
183 | dependency_files_tail->next = dep; | |
184 | dependency_files_tail = dep; | |
185 | } | |
186 | ||
187 | static void | |
188 | write_dependency_file (void) | |
189 | { | |
190 | FILE *out; | |
191 | struct dependency_file *dep; | |
192 | ||
193 | out = fopen (config.dependency_file, FOPEN_WT); | |
194 | if (out == NULL) | |
195 | { | |
196 | einfo (_("%F%P: cannot open dependency file %s: %E\n"), | |
197 | config.dependency_file); | |
198 | } | |
199 | ||
200 | fprintf (out, "%s:", output_filename); | |
201 | ||
202 | for (dep = dependency_files; dep != NULL; dep = dep->next) | |
203 | fprintf (out, " \\\n %s", dep->name); | |
204 | ||
205 | fprintf (out, "\n"); | |
206 | for (dep = dependency_files; dep != NULL; dep = dep->next) | |
207 | fprintf (out, "\n%s:\n", dep->name); | |
208 | ||
209 | fclose (out); | |
210 | } | |
211 | \f | |
252b5132 | 212 | static void |
498cd2a0 | 213 | ld_cleanup (void) |
252b5132 | 214 | { |
498cd2a0 | 215 | bfd_cache_close_all (); |
0381901e | 216 | #if BFD_SUPPORTS_PLUGINS |
498cd2a0 AM |
217 | plugin_call_cleanup (); |
218 | #endif | |
219 | if (output_filename && delete_output_file_on_failure) | |
220 | unlink_if_ordinary (output_filename); | |
252b5132 RH |
221 | } |
222 | ||
4519d071 | 223 | /* Hook to notice BFD assertions. */ |
3b66a141 HPN |
224 | |
225 | static void | |
226 | ld_bfd_assert_handler (const char *fmt, const char *bfdver, | |
227 | const char *file, int line) | |
228 | { | |
f38a2680 | 229 | config.make_executable = false; |
4519d071 AM |
230 | (*default_bfd_assert_handler) (fmt, bfdver, file, line); |
231 | } | |
232 | ||
233 | /* Hook the bfd error/warning handler for --fatal-warnings. */ | |
234 | ||
235 | static void | |
236 | ld_bfd_error_handler (const char *fmt, va_list ap) | |
237 | { | |
238 | if (config.fatal_warnings) | |
f38a2680 | 239 | config.make_executable = false; |
4519d071 | 240 | (*default_bfd_error_handler) (fmt, ap); |
3b66a141 HPN |
241 | } |
242 | ||
252b5132 | 243 | int |
1579bae1 | 244 | main (int argc, char **argv) |
252b5132 RH |
245 | { |
246 | char *emulation; | |
247 | long start_time = get_run_time (); | |
248 | ||
c774eab1 | 249 | #ifdef HAVE_LC_MESSAGES |
252b5132 | 250 | setlocale (LC_MESSAGES, ""); |
3882b010 | 251 | #endif |
3882b010 | 252 | setlocale (LC_CTYPE, ""); |
252b5132 RH |
253 | bindtextdomain (PACKAGE, LOCALEDIR); |
254 | textdomain (PACKAGE); | |
255 | ||
256 | program_name = argv[0]; | |
257 | xmalloc_set_program_name (program_name); | |
258 | ||
259 | START_PROGRESS (program_name, 0); | |
260 | ||
869b9d07 MM |
261 | expandargv (&argc, &argv); |
262 | ||
bf2dd8d7 AM |
263 | if (bfd_init () != BFD_INIT_MAGIC) |
264 | einfo (_("%F%P: fatal error: libbfd ABI mismatch\n")); | |
252b5132 RH |
265 | |
266 | bfd_set_error_program_name (program_name); | |
267 | ||
3b66a141 HPN |
268 | /* We want to notice and fail on those nasty BFD assertions which are |
269 | likely to signal incorrect output being generated but otherwise may | |
270 | leave no trace. */ | |
271 | default_bfd_assert_handler = bfd_set_assert_handler (ld_bfd_assert_handler); | |
272 | ||
4519d071 AM |
273 | /* Also hook the bfd error/warning handler for --fatal-warnings. */ |
274 | default_bfd_error_handler = bfd_set_error_handler (ld_bfd_error_handler); | |
275 | ||
498cd2a0 | 276 | xatexit (ld_cleanup); |
252b5132 | 277 | |
e2243057 RS |
278 | /* Set up the sysroot directory. */ |
279 | ld_sysroot = get_sysroot (argc, argv); | |
280 | if (*ld_sysroot) | |
3074964f | 281 | ld_canon_sysroot = lrealpath (ld_sysroot); |
3fe38064 | 282 | if (ld_canon_sysroot) |
889be5db DR |
283 | { |
284 | ld_canon_sysroot_len = strlen (ld_canon_sysroot); | |
285 | ||
286 | /* is_sysrooted_pathname() relies on no trailing dirsep. */ | |
287 | if (ld_canon_sysroot_len > 0 | |
288 | && IS_DIR_SEPARATOR (ld_canon_sysroot [ld_canon_sysroot_len - 1])) | |
f37b21b4 | 289 | ld_canon_sysroot [--ld_canon_sysroot_len] = '\0'; |
889be5db | 290 | } |
3fe38064 NC |
291 | else |
292 | ld_canon_sysroot_len = -1; | |
293 | ||
252b5132 RH |
294 | /* Set the default BFD target based on the configured target. Doing |
295 | this permits the linker to be configured for a particular target, | |
296 | and linked against a shared BFD library which was configured for | |
297 | a different target. The macro TARGET is defined by Makefile. */ | |
0aa7f586 | 298 | if (!bfd_set_default_target (TARGET)) |
252b5132 RH |
299 | { |
300 | einfo (_("%X%P: can't set BFD default target to `%s': %E\n"), TARGET); | |
301 | xexit (1); | |
302 | } | |
303 | ||
b47c4208 AM |
304 | #if YYDEBUG |
305 | { | |
306 | extern int yydebug; | |
307 | yydebug = 1; | |
308 | } | |
309 | #endif | |
310 | ||
f38a2680 | 311 | config.build_constructors = true; |
c76308d2 | 312 | config.rpath_separator = ':'; |
a854a4a7 AM |
313 | config.split_by_reloc = (unsigned) -1; |
314 | config.split_by_file = (bfd_size_type) -1; | |
f38a2680 AM |
315 | config.make_executable = true; |
316 | config.magic_demand_paged = true; | |
317 | config.text_read_only = true; | |
318 | config.print_map_discarded = true; | |
4f9d22a0 | 319 | link_info.disable_target_specific_optimizations = -1; |
3b95049e | 320 | |
f38a2680 AM |
321 | command_line.warn_mismatch = true; |
322 | command_line.warn_search_mismatch = true; | |
02b0b1aa | 323 | command_line.check_section_addresses = -1; |
bcaa7b3e | 324 | |
252b5132 RH |
325 | /* We initialize DEMANGLING based on the environment variable |
326 | COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the | |
327 | output of the linker, unless COLLECT_NO_DEMANGLE is set in the | |
328 | environment. Acting the same way here lets us provide the same | |
329 | interface by default. */ | |
330 | demangling = getenv ("COLLECT_NO_DEMANGLE") == NULL; | |
331 | ||
f38a2680 AM |
332 | link_info.allow_undefined_version = true; |
333 | link_info.keep_memory = true; | |
334 | link_info.combreloc = true; | |
335 | link_info.strip_discarded = true; | |
336 | link_info.prohibit_multiple_definition_absolute = false; | |
b32632c4 | 337 | link_info.textrel_check = DEFAULT_LD_TEXTREL_CHECK; |
2760f24c RG |
338 | link_info.emit_hash = DEFAULT_EMIT_SYSV_HASH; |
339 | link_info.emit_gnu_hash = DEFAULT_EMIT_GNU_HASH; | |
a9a4c53e AM |
340 | link_info.callbacks = &link_callbacks; |
341 | link_info.input_bfds_tail = &link_info.input_bfds; | |
3dbf70a2 MM |
342 | /* SVR4 linkers seem to set DT_INIT and DT_FINI based on magic _init |
343 | and _fini symbols. We are compatible. */ | |
344 | link_info.init_function = "_init"; | |
345 | link_info.fini_function = "_fini"; | |
a9a4c53e | 346 | link_info.relax_pass = 1; |
889c2a67 | 347 | link_info.extern_protected_data = -1; |
aec6b87e | 348 | link_info.dynamic_undefined_weak = -1; |
e0076ab3 | 349 | link_info.pei386_auto_import = -1; |
db6751f2 | 350 | link_info.spare_dynamic_tags = 5; |
967928e9 | 351 | link_info.path_separator = ':'; |
6c3bc0f8 NC |
352 | #ifdef DEFAULT_FLAG_COMPRESS_DEBUG |
353 | link_info.compress_debug = COMPRESS_DEBUG_GABI_ZLIB; | |
354 | #endif | |
6734f10a | 355 | #ifdef DEFAULT_NEW_DTAGS |
91001320 | 356 | link_info.new_dtags = DEFAULT_NEW_DTAGS; |
6734f10a | 357 | #endif |
f38a2680 | 358 | link_info.start_stop_gc = false; |
cae64165 | 359 | link_info.start_stop_visibility = STV_PROTECTED; |
24718e3b | 360 | |
252b5132 | 361 | ldfile_add_arch (""); |
252b5132 RH |
362 | emulation = get_emulation (argc, argv); |
363 | ldemul_choose_mode (emulation); | |
742aeb63 | 364 | default_target = ldemul_choose_target (argc, argv); |
252b5132 | 365 | lang_init (); |
18d6a79d | 366 | ldexp_init (); |
252b5132 | 367 | ldemul_before_parse (); |
f38a2680 | 368 | lang_has_input_file = false; |
252b5132 RH |
369 | parse_args (argc, argv); |
370 | ||
2d643429 NC |
371 | if (config.hash_table_size != 0) |
372 | bfd_hash_set_default_size (config.hash_table_size); | |
373 | ||
0381901e | 374 | #if BFD_SUPPORTS_PLUGINS |
9bbc1a67 | 375 | /* Now all the plugin arguments have been gathered, we can load them. */ |
d82184d7 | 376 | plugin_load_plugins (); |
0381901e | 377 | #endif /* BFD_SUPPORTS_PLUGINS */ |
36af4a4e | 378 | |
9bbc1a67 | 379 | ldemul_set_symbols (); |
252b5132 | 380 | |
14be8564 L |
381 | /* If we have not already opened and parsed a linker script, |
382 | try the default script from command line first. */ | |
383 | if (saved_script_handle == NULL | |
384 | && command_line.default_script != NULL) | |
385 | { | |
6ec6968b | 386 | ldfile_open_script_file (command_line.default_script); |
14be8564 L |
387 | parser_input = input_script; |
388 | yyparse (); | |
389 | } | |
390 | ||
b9a8de1e NC |
391 | /* If we have not already opened and parsed a linker script |
392 | read the emulation's appropriate default script. */ | |
b90e1c6f | 393 | if (saved_script_handle == NULL) |
252b5132 | 394 | { |
252b5132 | 395 | int isfile; |
b7a26f91 | 396 | char *s = ldemul_get_script (&isfile); |
252b5132 RH |
397 | |
398 | if (isfile) | |
7d24f02c | 399 | ldfile_open_default_command_file (s); |
252b5132 | 400 | else |
b7a26f91 | 401 | { |
252b5132 | 402 | lex_string = s; |
dab69f68 | 403 | lex_redirect (s, _("built in linker script"), 1); |
252b5132 RH |
404 | } |
405 | parser_input = input_script; | |
406 | yyparse (); | |
407 | lex_string = NULL; | |
408 | } | |
409 | ||
cd6f1cf3 | 410 | if (verbose) |
b9a8de1e | 411 | { |
9cb61eab AM |
412 | if (saved_script_handle) |
413 | info_msg (_("using external linker script:")); | |
414 | else | |
415 | info_msg (_("using internal linker script:")); | |
416 | info_msg ("\n==================================================\n"); | |
b9a8de1e NC |
417 | |
418 | if (saved_script_handle) | |
419 | { | |
74699268 | 420 | static const int ld_bufsz = 8193; |
b9a8de1e | 421 | size_t n; |
1e9cc1c2 | 422 | char *buf = (char *) xmalloc (ld_bufsz); |
b9a8de1e NC |
423 | |
424 | rewind (saved_script_handle); | |
74699268 | 425 | while ((n = fread (buf, 1, ld_bufsz - 1, saved_script_handle)) > 0) |
b9a8de1e | 426 | { |
b7a26f91 | 427 | buf[n] = 0; |
f5ac6ab3 | 428 | info_msg ("%s", buf); |
b9a8de1e NC |
429 | } |
430 | rewind (saved_script_handle); | |
431 | free (buf); | |
432 | } | |
433 | else | |
434 | { | |
435 | int isfile; | |
436 | ||
b7a26f91 | 437 | info_msg (ldemul_get_script (&isfile)); |
b9a8de1e | 438 | } |
b7a26f91 | 439 | |
b9a8de1e NC |
440 | info_msg ("\n==================================================\n"); |
441 | } | |
442 | ||
7bdf4127 AB |
443 | if (command_line.force_group_allocation |
444 | || !bfd_link_relocatable (&link_info)) | |
f38a2680 | 445 | link_info.resolve_section_groups = true; |
7bdf4127 | 446 | else |
f38a2680 | 447 | link_info.resolve_section_groups = false; |
7bdf4127 | 448 | |
30824704 RM |
449 | if (command_line.print_output_format) |
450 | info_msg ("%s\n", lang_get_output_target ()); | |
451 | ||
252b5132 RH |
452 | lang_final (); |
453 | ||
61e2488c JT |
454 | /* If the only command line argument has been -v or --version or --verbose |
455 | then ignore any input files provided by linker scripts and exit now. | |
456 | We do not want to create an output file when the linker is just invoked | |
457 | to provide version information. */ | |
458 | if (argc == 2 && version_printed) | |
459 | xexit (0); | |
460 | ||
a4819f54 | 461 | if (link_info.inhibit_common_definition && !bfd_link_dll (&link_info)) |
df5f2391 | 462 | einfo (_("%F%P: --no-define-common may not be used without -shared\n")); |
a4819f54 | 463 | |
b34976b6 | 464 | if (!lang_has_input_file) |
252b5132 | 465 | { |
30824704 | 466 | if (version_printed || command_line.print_output_format) |
252b5132 | 467 | xexit (0); |
df5f2391 | 468 | einfo (_("%F%P: no input files\n")); |
252b5132 RH |
469 | } |
470 | ||
5c87f94b | 471 | if (verbose) |
0125cdf2 | 472 | info_msg (_("%P: mode %s\n"), emulation); |
252b5132 RH |
473 | |
474 | ldemul_after_parse (); | |
475 | ||
252b5132 RH |
476 | if (config.map_filename) |
477 | { | |
478 | if (strcmp (config.map_filename, "-") == 0) | |
479 | { | |
480 | config.map_file = stdout; | |
481 | } | |
482 | else | |
483 | { | |
484 | config.map_file = fopen (config.map_filename, FOPEN_WT); | |
485 | if (config.map_file == (FILE *) NULL) | |
486 | { | |
487 | bfd_set_error (bfd_error_system_call); | |
df5f2391 | 488 | einfo (_("%F%P: cannot open map file %s: %E\n"), |
252b5132 RH |
489 | config.map_filename); |
490 | } | |
491 | } | |
f38a2680 | 492 | link_info.has_map_file = true; |
252b5132 RH |
493 | } |
494 | ||
252b5132 RH |
495 | lang_process (); |
496 | ||
497 | /* Print error messages for any missing symbols, for any warning | |
6d5e62f8 | 498 | symbols, and possibly multiple definitions. */ |
0e1862bb | 499 | if (bfd_link_relocatable (&link_info)) |
f13a99db | 500 | link_info.output_bfd->flags &= ~EXEC_P; |
252b5132 | 501 | else |
f13a99db | 502 | link_info.output_bfd->flags |= EXEC_P; |
252b5132 | 503 | |
0ce398f1 L |
504 | if ((link_info.compress_debug & COMPRESS_DEBUG)) |
505 | { | |
506 | link_info.output_bfd->flags |= BFD_COMPRESS; | |
507 | if (link_info.compress_debug == COMPRESS_DEBUG_GABI_ZLIB) | |
508 | link_info.output_bfd->flags |= BFD_COMPRESS_GABI; | |
509 | } | |
510 | ||
252b5132 RH |
511 | ldwrite (); |
512 | ||
513 | if (config.map_file != NULL) | |
514 | lang_map (); | |
515 | if (command_line.cref) | |
516 | output_cref (config.map_file != NULL ? config.map_file : stdout); | |
517 | if (nocrossref_list != NULL) | |
518 | check_nocrossrefs (); | |
3604cb1f TG |
519 | if (command_line.print_memory_usage) |
520 | lang_print_memory_usage (); | |
edf84efc NC |
521 | #if 0 |
522 | { | |
0aa7f586 | 523 | struct bfd_link_hash_entry *h; |
252b5132 | 524 | |
edf84efc NC |
525 | h = bfd_link_hash_lookup (link_info.hash, "__image_base__", 0,0,1); |
526 | fprintf (stderr, "lookup = %p val %lx\n", h, h ? h->u.def.value : 1); | |
527 | } | |
528 | #endif | |
18d6a79d | 529 | ldexp_finish (); |
750877ba L |
530 | lang_finish (); |
531 | ||
f37b21b4 RM |
532 | if (config.dependency_file != NULL) |
533 | write_dependency_file (); | |
534 | ||
1049f94e | 535 | /* Even if we're producing relocatable output, some non-fatal errors should |
252b5132 | 536 | be reported in the exit status. (What non-fatal errors, if any, do we |
1049f94e | 537 | want to ignore for relocatable output?) */ |
b34976b6 | 538 | if (!config.make_executable && !force_make_executable) |
252b5132 | 539 | { |
5c87f94b | 540 | if (verbose) |
0125cdf2 NC |
541 | einfo (_("%P: link errors found, deleting executable `%s'\n"), |
542 | output_filename); | |
252b5132 | 543 | |
4309cbf2 | 544 | /* The file will be removed by ld_cleanup. */ |
252b5132 RH |
545 | xexit (1); |
546 | } | |
547 | else | |
548 | { | |
0aa7f586 | 549 | if (!bfd_close (link_info.output_bfd)) |
df5f2391 | 550 | einfo (_("%F%P: %pB: final close failed: %E\n"), link_info.output_bfd); |
252b5132 RH |
551 | |
552 | /* If the --force-exe-suffix is enabled, and we're making an | |
6d5e62f8 KH |
553 | executable file and it doesn't end in .exe, copy it to one |
554 | which does. */ | |
0e1862bb L |
555 | if (!bfd_link_relocatable (&link_info) |
556 | && command_line.force_exe_suffix) | |
252b5132 RH |
557 | { |
558 | int len = strlen (output_filename); | |
0125cdf2 | 559 | |
6d5e62f8 | 560 | if (len < 4 |
252b5132 RH |
561 | || (strcasecmp (output_filename + len - 4, ".exe") != 0 |
562 | && strcasecmp (output_filename + len - 4, ".dll") != 0)) | |
563 | { | |
564 | FILE *src; | |
565 | FILE *dst; | |
566 | const int bsize = 4096; | |
1e9cc1c2 | 567 | char *buf = (char *) xmalloc (bsize); |
252b5132 | 568 | int l; |
1e9cc1c2 | 569 | char *dst_name = (char *) xmalloc (len + 5); |
0125cdf2 | 570 | |
252b5132 RH |
571 | strcpy (dst_name, output_filename); |
572 | strcat (dst_name, ".exe"); | |
573 | src = fopen (output_filename, FOPEN_RB); | |
574 | dst = fopen (dst_name, FOPEN_WB); | |
575 | ||
576 | if (!src) | |
df5f2391 | 577 | einfo (_("%F%P: unable to open for source of copy `%s'\n"), |
1579bae1 | 578 | output_filename); |
252b5132 | 579 | if (!dst) |
df5f2391 | 580 | einfo (_("%F%P: unable to open for destination of copy `%s'\n"), |
1579bae1 | 581 | dst_name); |
252b5132 RH |
582 | while ((l = fread (buf, 1, bsize, src)) > 0) |
583 | { | |
584 | int done = fwrite (buf, 1, l, dst); | |
0125cdf2 | 585 | |
252b5132 | 586 | if (done != l) |
df5f2391 | 587 | einfo (_("%P: error writing file `%s'\n"), dst_name); |
252b5132 | 588 | } |
0125cdf2 | 589 | |
252b5132 RH |
590 | fclose (src); |
591 | if (fclose (dst) == EOF) | |
df5f2391 | 592 | einfo (_("%P: error closing file `%s'\n"), dst_name); |
252b5132 RH |
593 | free (dst_name); |
594 | free (buf); | |
595 | } | |
596 | } | |
597 | } | |
598 | ||
599 | END_PROGRESS (program_name); | |
600 | ||
601 | if (config.stats) | |
602 | { | |
252b5132 RH |
603 | long run_time = get_run_time () - start_time; |
604 | ||
e922bcab | 605 | fflush (stdout); |
252b5132 RH |
606 | fprintf (stderr, _("%s: total time in link: %ld.%06ld\n"), |
607 | program_name, run_time / 1000000, run_time % 1000000); | |
e922bcab | 608 | fflush (stderr); |
252b5132 RH |
609 | } |
610 | ||
4309cbf2 | 611 | /* Prevent ld_cleanup from doing anything, after a successful link. */ |
252b5132 RH |
612 | output_filename = NULL; |
613 | ||
614 | xexit (0); | |
615 | return 0; | |
616 | } | |
617 | ||
e2243057 RS |
618 | /* If the configured sysroot is relocatable, try relocating it based on |
619 | default prefix FROM. Return the relocated directory if it exists, | |
620 | otherwise return null. */ | |
621 | ||
622 | static char * | |
623 | get_relative_sysroot (const char *from ATTRIBUTE_UNUSED) | |
624 | { | |
625 | #ifdef TARGET_SYSTEM_ROOT_RELOCATABLE | |
626 | char *path; | |
627 | struct stat s; | |
628 | ||
629 | path = make_relative_prefix (program_name, from, TARGET_SYSTEM_ROOT); | |
630 | if (path) | |
631 | { | |
632 | if (stat (path, &s) == 0 && S_ISDIR (s.st_mode)) | |
633 | return path; | |
634 | free (path); | |
635 | } | |
636 | #endif | |
637 | return 0; | |
638 | } | |
639 | ||
640 | /* Return the sysroot directory. Return "" if no sysroot is being used. */ | |
641 | ||
642 | static const char * | |
643 | get_sysroot (int argc, char **argv) | |
644 | { | |
645 | int i; | |
55d5520a | 646 | const char *path = NULL; |
e2243057 RS |
647 | |
648 | for (i = 1; i < argc; i++) | |
08dedd66 | 649 | if (startswith (argv[i], "--sysroot=")) |
55d5520a | 650 | path = argv[i] + strlen ("--sysroot="); |
e2243057 | 651 | |
55d5520a AM |
652 | if (!path) |
653 | path = get_relative_sysroot (BINDIR); | |
e2243057 | 654 | |
55d5520a AM |
655 | if (!path) |
656 | path = get_relative_sysroot (TOOLBINDIR); | |
657 | ||
658 | if (!path) | |
659 | path = TARGET_SYSTEM_ROOT; | |
660 | ||
661 | if (IS_DIR_SEPARATOR (*path) && path[1] == 0) | |
662 | path = ""; | |
e2243057 | 663 | |
55d5520a | 664 | return path; |
e2243057 RS |
665 | } |
666 | ||
252b5132 RH |
667 | /* We need to find any explicitly given emulation in order to initialize the |
668 | state that's needed by the lex&yacc argument parser (parse_args). */ | |
669 | ||
670 | static char * | |
1579bae1 | 671 | get_emulation (int argc, char **argv) |
252b5132 RH |
672 | { |
673 | char *emulation; | |
674 | int i; | |
675 | ||
676 | emulation = getenv (EMULATION_ENVIRON); | |
677 | if (emulation == NULL) | |
678 | emulation = DEFAULT_EMULATION; | |
679 | ||
680 | for (i = 1; i < argc; i++) | |
681 | { | |
08dedd66 | 682 | if (startswith (argv[i], "-m")) |
252b5132 RH |
683 | { |
684 | if (argv[i][2] == '\0') | |
685 | { | |
686 | /* -m EMUL */ | |
687 | if (i < argc - 1) | |
688 | { | |
689 | emulation = argv[i + 1]; | |
690 | i++; | |
691 | } | |
692 | else | |
df5f2391 | 693 | einfo (_("%F%P: missing argument to -m\n")); |
252b5132 RH |
694 | } |
695 | else if (strcmp (argv[i], "-mips1") == 0 | |
696 | || strcmp (argv[i], "-mips2") == 0 | |
697 | || strcmp (argv[i], "-mips3") == 0 | |
d1cf510e | 698 | || strcmp (argv[i], "-mips4") == 0 |
6f33421c CD |
699 | || strcmp (argv[i], "-mips5") == 0 |
700 | || strcmp (argv[i], "-mips32") == 0 | |
701 | || strcmp (argv[i], "-mips32r2") == 0 | |
c0f6e439 MJ |
702 | || strcmp (argv[i], "-mips32r3") == 0 |
703 | || strcmp (argv[i], "-mips32r5") == 0 | |
7361da2c | 704 | || strcmp (argv[i], "-mips32r6") == 0 |
5f74bc13 | 705 | || strcmp (argv[i], "-mips64") == 0 |
7361da2c | 706 | || strcmp (argv[i], "-mips64r2") == 0 |
c0f6e439 MJ |
707 | || strcmp (argv[i], "-mips64r3") == 0 |
708 | || strcmp (argv[i], "-mips64r5") == 0 | |
7361da2c | 709 | || strcmp (argv[i], "-mips64r6") == 0) |
252b5132 | 710 | { |
31d677f9 | 711 | /* FIXME: The arguments -mips1, -mips2, -mips3, etc. are |
252b5132 RH |
712 | passed to the linker by some MIPS compilers. They |
713 | generally tell the linker to use a slightly different | |
714 | library path. Perhaps someday these should be | |
715 | implemented as emulations; until then, we just ignore | |
716 | the arguments and hope that nobody ever creates | |
717 | emulations named ips1, ips2 or ips3. */ | |
718 | } | |
719 | else if (strcmp (argv[i], "-m486") == 0) | |
720 | { | |
721 | /* FIXME: The argument -m486 is passed to the linker on | |
722 | some Linux systems. Hope that nobody creates an | |
723 | emulation named 486. */ | |
724 | } | |
725 | else | |
726 | { | |
727 | /* -mEMUL */ | |
728 | emulation = &argv[i][2]; | |
729 | } | |
730 | } | |
731 | } | |
732 | ||
733 | return emulation; | |
734 | } | |
735 | ||
252b5132 | 736 | void |
1579bae1 | 737 | add_ysym (const char *name) |
252b5132 | 738 | { |
1579bae1 | 739 | if (link_info.notice_hash == NULL) |
252b5132 | 740 | { |
0aa7f586 AM |
741 | link_info.notice_hash |
742 | = (struct bfd_hash_table *) xmalloc (sizeof (struct bfd_hash_table)); | |
66eb6687 AM |
743 | if (!bfd_hash_table_init_n (link_info.notice_hash, |
744 | bfd_hash_newfunc, | |
745 | sizeof (struct bfd_hash_entry), | |
746 | 61)) | |
df5f2391 | 747 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); |
6d5e62f8 | 748 | } |
252b5132 | 749 | |
f38a2680 | 750 | if (bfd_hash_lookup (link_info.notice_hash, name, true, true) == NULL) |
df5f2391 | 751 | einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); |
252b5132 RH |
752 | } |
753 | ||
0e86e20e AM |
754 | void |
755 | add_ignoresym (struct bfd_link_info *info, const char *name) | |
756 | { | |
757 | if (info->ignore_hash == NULL) | |
758 | { | |
759 | info->ignore_hash = xmalloc (sizeof (struct bfd_hash_table)); | |
0aa7f586 AM |
760 | if (!bfd_hash_table_init_n (info->ignore_hash, |
761 | bfd_hash_newfunc, | |
762 | sizeof (struct bfd_hash_entry), | |
763 | 61)) | |
df5f2391 | 764 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); |
0e86e20e AM |
765 | } |
766 | ||
f38a2680 | 767 | if (bfd_hash_lookup (info->ignore_hash, name, true, true) == NULL) |
df5f2391 | 768 | einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); |
0e86e20e AM |
769 | } |
770 | ||
252b5132 RH |
771 | /* Record a symbol to be wrapped, from the --wrap option. */ |
772 | ||
773 | void | |
1579bae1 | 774 | add_wrap (const char *name) |
252b5132 RH |
775 | { |
776 | if (link_info.wrap_hash == NULL) | |
777 | { | |
0aa7f586 AM |
778 | link_info.wrap_hash |
779 | = (struct bfd_hash_table *) xmalloc (sizeof (struct bfd_hash_table)); | |
66eb6687 AM |
780 | if (!bfd_hash_table_init_n (link_info.wrap_hash, |
781 | bfd_hash_newfunc, | |
782 | sizeof (struct bfd_hash_entry), | |
783 | 61)) | |
df5f2391 | 784 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); |
252b5132 | 785 | } |
0125cdf2 | 786 | |
f38a2680 | 787 | if (bfd_hash_lookup (link_info.wrap_hash, name, true, true) == NULL) |
df5f2391 | 788 | einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); |
252b5132 RH |
789 | } |
790 | ||
791 | /* Handle the -retain-symbols-file option. */ | |
792 | ||
793 | void | |
1579bae1 | 794 | add_keepsyms_file (const char *filename) |
252b5132 RH |
795 | { |
796 | FILE *file; | |
797 | char *buf; | |
798 | size_t bufsize; | |
799 | int c; | |
800 | ||
801 | if (link_info.strip == strip_some) | |
802 | einfo (_("%X%P: error: duplicate retain-symbols-file\n")); | |
803 | ||
804 | file = fopen (filename, "r"); | |
1579bae1 | 805 | if (file == NULL) |
252b5132 RH |
806 | { |
807 | bfd_set_error (bfd_error_system_call); | |
808 | einfo ("%X%P: %s: %E\n", filename); | |
809 | return; | |
810 | } | |
811 | ||
1e9cc1c2 NC |
812 | link_info.keep_hash = (struct bfd_hash_table *) |
813 | xmalloc (sizeof (struct bfd_hash_table)); | |
66eb6687 AM |
814 | if (!bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc, |
815 | sizeof (struct bfd_hash_entry))) | |
df5f2391 | 816 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); |
252b5132 RH |
817 | |
818 | bufsize = 100; | |
1e9cc1c2 | 819 | buf = (char *) xmalloc (bufsize); |
252b5132 RH |
820 | |
821 | c = getc (file); | |
822 | while (c != EOF) | |
823 | { | |
3882b010 | 824 | while (ISSPACE (c)) |
252b5132 RH |
825 | c = getc (file); |
826 | ||
827 | if (c != EOF) | |
828 | { | |
829 | size_t len = 0; | |
830 | ||
0aa7f586 | 831 | while (!ISSPACE (c) && c != EOF) |
252b5132 RH |
832 | { |
833 | buf[len] = c; | |
834 | ++len; | |
835 | if (len >= bufsize) | |
836 | { | |
837 | bufsize *= 2; | |
1e9cc1c2 | 838 | buf = (char *) xrealloc (buf, bufsize); |
252b5132 RH |
839 | } |
840 | c = getc (file); | |
841 | } | |
842 | ||
843 | buf[len] = '\0'; | |
844 | ||
f38a2680 | 845 | if (bfd_hash_lookup (link_info.keep_hash, buf, true, true) == NULL) |
df5f2391 | 846 | einfo (_("%F%P: bfd_hash_lookup for insertion failed: %E\n")); |
252b5132 RH |
847 | } |
848 | } | |
849 | ||
850 | if (link_info.strip != strip_none) | |
851 | einfo (_("%P: `-retain-symbols-file' overrides `-s' and `-S'\n")); | |
852 | ||
5ed6aba4 | 853 | free (buf); |
252b5132 | 854 | link_info.strip = strip_some; |
d9313f4f | 855 | fclose (file); |
252b5132 RH |
856 | } |
857 | \f | |
858 | /* Callbacks from the BFD linker routines. */ | |
859 | ||
860 | /* This is called when BFD has decided to include an archive member in | |
861 | a link. */ | |
862 | ||
f38a2680 | 863 | static bool |
e1fffbe6 | 864 | add_archive_element (struct bfd_link_info *info, |
1579bae1 | 865 | bfd *abfd, |
5d3236ee DK |
866 | const char *name, |
867 | bfd **subsbfd ATTRIBUTE_UNUSED) | |
252b5132 RH |
868 | { |
869 | lang_input_statement_type *input; | |
1fa4ec6a | 870 | lang_input_statement_type *parent; |
5d3236ee | 871 | lang_input_statement_type orig_input; |
252b5132 | 872 | |
1e9cc1c2 NC |
873 | input = (lang_input_statement_type *) |
874 | xcalloc (1, sizeof (lang_input_statement_type)); | |
fb47deda | 875 | input->header.type = lang_input_statement_enum; |
607b4833 AM |
876 | input->filename = bfd_get_filename (abfd); |
877 | input->local_sym_name = bfd_get_filename (abfd); | |
252b5132 | 878 | input->the_bfd = abfd; |
252b5132 | 879 | |
5d3236ee DK |
880 | /* Save the original data for trace files/tries below, as plugins |
881 | (if enabled) may possibly alter it to point to a replacement | |
882 | BFD, but we still want to output the original BFD filename. */ | |
883 | orig_input = *input; | |
0381901e | 884 | #if BFD_SUPPORTS_PLUGINS |
b95a0a31 | 885 | if (link_info.lto_plugin_active) |
5d3236ee DK |
886 | { |
887 | /* We must offer this archive member to the plugins to claim. */ | |
35a1e5f3 L |
888 | plugin_maybe_claim (input); |
889 | if (input->flags.claimed) | |
5d3236ee | 890 | { |
b95a0a31 L |
891 | if (no_more_claiming) |
892 | { | |
893 | /* Don't claim new IR symbols after all IR symbols have | |
894 | been claimed. */ | |
5c87f94b | 895 | if (verbose) |
6e0c75f7 | 896 | info_msg ("%pI: no new IR symbols to claim\n", |
b95a0a31 L |
897 | &orig_input); |
898 | input->flags.claimed = 0; | |
f38a2680 | 899 | return false; |
b95a0a31 | 900 | } |
f38a2680 | 901 | input->flags.claim_archive = true; |
35a1e5f3 | 902 | *subsbfd = input->the_bfd; |
5d3236ee DK |
903 | } |
904 | } | |
0381901e | 905 | #endif /* BFD_SUPPORTS_PLUGINS */ |
5d3236ee | 906 | |
9221725d AM |
907 | if (link_info.input_bfds_tail == &input->the_bfd->link.next |
908 | || input->the_bfd->link.next != NULL) | |
909 | { | |
910 | /* We have already loaded this element, and are attempting to | |
911 | load it again. This can happen when the archive map doesn't | |
912 | match actual symbols defined by the element. */ | |
913 | free (input); | |
914 | bfd_set_error (bfd_error_malformed_archive); | |
f38a2680 | 915 | return false; |
9221725d AM |
916 | } |
917 | ||
918 | /* Set the file_chain pointer of archives to the last element loaded | |
919 | from the archive. See ldlang.c:find_rescan_insertion. */ | |
920 | parent = bfd_usrdata (abfd->my_archive); | |
921 | if (parent != NULL && !parent->flags.reload) | |
922 | parent->next = input; | |
923 | ||
252b5132 RH |
924 | ldlang_add_file (input); |
925 | ||
1579bae1 | 926 | if (config.map_file != NULL) |
252b5132 | 927 | { |
f38a2680 | 928 | static bool header_printed; |
252b5132 RH |
929 | struct bfd_link_hash_entry *h; |
930 | bfd *from; | |
931 | int len; | |
932 | ||
f38a2680 | 933 | h = bfd_link_hash_lookup (info->hash, name, false, false, true); |
aa654ee8 AM |
934 | if (h == NULL |
935 | && info->pei386_auto_import | |
08dedd66 | 936 | && startswith (name, "__imp_")) |
f38a2680 | 937 | h = bfd_link_hash_lookup (info->hash, name + 6, false, false, true); |
252b5132 RH |
938 | |
939 | if (h == NULL) | |
940 | from = NULL; | |
941 | else | |
942 | { | |
943 | switch (h->type) | |
944 | { | |
945 | default: | |
946 | from = NULL; | |
947 | break; | |
948 | ||
949 | case bfd_link_hash_defined: | |
950 | case bfd_link_hash_defweak: | |
951 | from = h->u.def.section->owner; | |
952 | break; | |
953 | ||
954 | case bfd_link_hash_undefined: | |
955 | case bfd_link_hash_undefweak: | |
956 | from = h->u.undef.abfd; | |
957 | break; | |
958 | ||
959 | case bfd_link_hash_common: | |
960 | from = h->u.c.p->section->owner; | |
961 | break; | |
962 | } | |
963 | } | |
964 | ||
0aa7f586 | 965 | if (!header_printed) |
252b5132 | 966 | { |
1273da04 | 967 | minfo (_("Archive member included to satisfy reference by file (symbol)\n\n")); |
f38a2680 | 968 | header_printed = true; |
252b5132 RH |
969 | } |
970 | ||
3860d2b4 AM |
971 | if (abfd->my_archive == NULL |
972 | || bfd_is_thin_archive (abfd->my_archive)) | |
252b5132 RH |
973 | { |
974 | minfo ("%s", bfd_get_filename (abfd)); | |
975 | len = strlen (bfd_get_filename (abfd)); | |
976 | } | |
977 | else | |
978 | { | |
3860d2b4 | 979 | minfo ("%s(%s)", bfd_get_filename (abfd->my_archive), |
252b5132 | 980 | bfd_get_filename (abfd)); |
3860d2b4 | 981 | len = (strlen (bfd_get_filename (abfd->my_archive)) |
252b5132 RH |
982 | + strlen (bfd_get_filename (abfd)) |
983 | + 2); | |
984 | } | |
985 | ||
986 | if (len >= 29) | |
987 | { | |
988 | print_nl (); | |
989 | len = 0; | |
990 | } | |
991 | while (len < 30) | |
992 | { | |
993 | print_space (); | |
994 | ++len; | |
995 | } | |
996 | ||
997 | if (from != NULL) | |
871b3ab2 | 998 | minfo ("%pB ", from); |
252b5132 | 999 | if (h != NULL) |
c1c8c1ef | 1000 | minfo ("(%pT)\n", h->root.string); |
252b5132 RH |
1001 | else |
1002 | minfo ("(%s)\n", name); | |
1003 | } | |
1004 | ||
727a29ba AM |
1005 | if (verbose |
1006 | || trace_files > 1 | |
1007 | || (trace_files && bfd_is_thin_archive (orig_input.the_bfd->my_archive))) | |
c1c8c1ef | 1008 | info_msg ("%pI\n", &orig_input); |
f38a2680 | 1009 | return true; |
252b5132 RH |
1010 | } |
1011 | ||
1012 | /* This is called when BFD has discovered a symbol which is defined | |
1013 | multiple times. */ | |
1014 | ||
1a72702b | 1015 | static void |
24f58f47 AM |
1016 | multiple_definition (struct bfd_link_info *info, |
1017 | struct bfd_link_hash_entry *h, | |
1579bae1 AM |
1018 | bfd *nbfd, |
1019 | asection *nsec, | |
1020 | bfd_vma nval) | |
252b5132 | 1021 | { |
24f58f47 AM |
1022 | const char *name; |
1023 | bfd *obfd; | |
1024 | asection *osec; | |
1025 | bfd_vma oval; | |
1026 | ||
1027 | if (info->allow_multiple_definition) | |
1a72702b | 1028 | return; |
24f58f47 AM |
1029 | |
1030 | switch (h->type) | |
1031 | { | |
1032 | case bfd_link_hash_defined: | |
1033 | osec = h->u.def.section; | |
1034 | oval = h->u.def.value; | |
1035 | obfd = h->u.def.section->owner; | |
1036 | break; | |
1037 | case bfd_link_hash_indirect: | |
1038 | osec = bfd_ind_section_ptr; | |
1039 | oval = 0; | |
1040 | obfd = NULL; | |
1041 | break; | |
1042 | default: | |
1043 | abort (); | |
1044 | } | |
1045 | ||
1046 | /* Ignore a redefinition of an absolute symbol to the | |
1047 | same value; it's harmless. */ | |
1048 | if (h->type == bfd_link_hash_defined | |
1049 | && bfd_is_abs_section (osec) | |
1050 | && bfd_is_abs_section (nsec) | |
1051 | && nval == oval) | |
1a72702b | 1052 | return; |
24f58f47 | 1053 | |
252b5132 RH |
1054 | /* If either section has the output_section field set to |
1055 | bfd_abs_section_ptr, it means that the section is being | |
1056 | discarded, and this is not really a multiple definition at all. | |
9e2278f5 AM |
1057 | FIXME: It would be cleaner to somehow ignore symbols defined in |
1058 | sections which are being discarded. */ | |
3f0a5f17 ME |
1059 | if (!info->prohibit_multiple_definition_absolute |
1060 | && ((osec->output_section != NULL | |
1061 | && ! bfd_is_abs_section (osec) | |
1062 | && bfd_is_abs_section (osec->output_section)) | |
1063 | || (nsec->output_section != NULL | |
1064 | && !bfd_is_abs_section (nsec) | |
1065 | && bfd_is_abs_section (nsec->output_section)))) | |
1a72702b | 1066 | return; |
252b5132 | 1067 | |
24f58f47 AM |
1068 | name = h->root.string; |
1069 | if (nbfd == NULL) | |
1070 | { | |
1071 | nbfd = obfd; | |
1072 | nsec = osec; | |
1073 | nval = oval; | |
1074 | obfd = NULL; | |
1075 | } | |
70993db3 AM |
1076 | if (info->warn_multiple_definition) |
1077 | einfo (_("%P: %C: warning: multiple definition of `%pT'"), | |
1078 | nbfd, nsec, nval, name); | |
1079 | else | |
1080 | einfo (_("%X%P: %C: multiple definition of `%pT'"), | |
1081 | nbfd, nsec, nval, name); | |
1579bae1 | 1082 | if (obfd != NULL) |
df5f2391 AM |
1083 | einfo (_("; %D: first defined here"), obfd, osec, oval); |
1084 | einfo ("\n"); | |
9b14b192 | 1085 | |
13761a11 | 1086 | if (RELAXATION_ENABLED_BY_USER) |
9b14b192 | 1087 | { |
df5f2391 | 1088 | einfo (_("%P: disabling relaxation; it will not work with multiple definitions\n")); |
13761a11 | 1089 | DISABLE_RELAXATION; |
9b14b192 | 1090 | } |
252b5132 RH |
1091 | } |
1092 | ||
1093 | /* This is called when there is a definition of a common symbol, or | |
1094 | when a common symbol is found for a symbol that is already defined, | |
1095 | or when two common symbols are found. We only do something if | |
1096 | -warn-common was used. */ | |
1097 | ||
1a72702b | 1098 | static void |
1579bae1 | 1099 | multiple_common (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
24f58f47 | 1100 | struct bfd_link_hash_entry *h, |
1579bae1 AM |
1101 | bfd *nbfd, |
1102 | enum bfd_link_hash_type ntype, | |
1103 | bfd_vma nsize) | |
252b5132 | 1104 | { |
24f58f47 AM |
1105 | const char *name; |
1106 | bfd *obfd; | |
1107 | enum bfd_link_hash_type otype; | |
1108 | bfd_vma osize; | |
1109 | ||
1110 | if (!config.warn_common) | |
1a72702b | 1111 | return; |
252b5132 | 1112 | |
24f58f47 AM |
1113 | name = h->root.string; |
1114 | otype = h->type; | |
1115 | if (otype == bfd_link_hash_common) | |
1116 | { | |
1117 | obfd = h->u.c.p->section->owner; | |
1118 | osize = h->u.c.size; | |
1119 | } | |
1120 | else if (otype == bfd_link_hash_defined | |
1121 | || otype == bfd_link_hash_defweak) | |
1122 | { | |
1123 | obfd = h->u.def.section->owner; | |
1124 | osize = 0; | |
1125 | } | |
1126 | else | |
1127 | { | |
1128 | /* FIXME: It would nice if we could report the BFD which defined | |
1129 | an indirect symbol, but we don't have anywhere to store the | |
1130 | information. */ | |
1131 | obfd = NULL; | |
1132 | osize = 0; | |
1133 | } | |
1134 | ||
252b5132 RH |
1135 | if (ntype == bfd_link_hash_defined |
1136 | || ntype == bfd_link_hash_defweak | |
1137 | || ntype == bfd_link_hash_indirect) | |
1138 | { | |
1139 | ASSERT (otype == bfd_link_hash_common); | |
252b5132 | 1140 | if (obfd != NULL) |
df5f2391 AM |
1141 | einfo (_("%P: %pB: warning: definition of `%pT' overriding common" |
1142 | " from %pB\n"), | |
1143 | nbfd, name, obfd); | |
1144 | else | |
1145 | einfo (_("%P: %pB: warning: definition of `%pT' overriding common\n"), | |
1146 | nbfd, name); | |
252b5132 RH |
1147 | } |
1148 | else if (otype == bfd_link_hash_defined | |
1149 | || otype == bfd_link_hash_defweak | |
1150 | || otype == bfd_link_hash_indirect) | |
1151 | { | |
1152 | ASSERT (ntype == bfd_link_hash_common); | |
252b5132 | 1153 | if (obfd != NULL) |
df5f2391 AM |
1154 | einfo (_("%P: %pB: warning: common of `%pT' overridden by definition" |
1155 | " from %pB\n"), | |
1156 | nbfd, name, obfd); | |
1157 | else | |
1158 | einfo (_("%P: %pB: warning: common of `%pT' overridden by definition\n"), | |
1159 | nbfd, name); | |
252b5132 RH |
1160 | } |
1161 | else | |
1162 | { | |
1163 | ASSERT (otype == bfd_link_hash_common && ntype == bfd_link_hash_common); | |
1164 | if (osize > nsize) | |
1165 | { | |
252b5132 | 1166 | if (obfd != NULL) |
df5f2391 AM |
1167 | einfo (_("%P: %pB: warning: common of `%pT' overridden" |
1168 | " by larger common from %pB\n"), | |
1169 | nbfd, name, obfd); | |
1170 | else | |
1171 | einfo (_("%P: %pB: warning: common of `%pT' overridden" | |
1172 | " by larger common\n"), | |
1173 | nbfd, name); | |
252b5132 RH |
1174 | } |
1175 | else if (nsize > osize) | |
1176 | { | |
252b5132 | 1177 | if (obfd != NULL) |
df5f2391 AM |
1178 | einfo (_("%P: %pB: warning: common of `%pT' overriding" |
1179 | " smaller common from %pB\n"), | |
1180 | nbfd, name, obfd); | |
1181 | else | |
1182 | einfo (_("%P: %pB: warning: common of `%pT' overriding" | |
1183 | " smaller common\n"), | |
1184 | nbfd, name); | |
252b5132 RH |
1185 | } |
1186 | else | |
1187 | { | |
252b5132 | 1188 | if (obfd != NULL) |
df5f2391 AM |
1189 | einfo (_("%P: %pB and %pB: warning: multiple common of `%pT'\n"), |
1190 | nbfd, obfd, name); | |
1191 | else | |
1192 | einfo (_("%P: %pB: warning: multiple common of `%pT'\n"), | |
1193 | nbfd, name); | |
252b5132 RH |
1194 | } |
1195 | } | |
252b5132 RH |
1196 | } |
1197 | ||
1198 | /* This is called when BFD has discovered a set element. H is the | |
1199 | entry in the linker hash table for the set. SECTION and VALUE | |
1200 | represent a value which should be added to the set. */ | |
1201 | ||
1a72702b | 1202 | static void |
1579bae1 AM |
1203 | add_to_set (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1204 | struct bfd_link_hash_entry *h, | |
1205 | bfd_reloc_code_real_type reloc, | |
1206 | bfd *abfd, | |
1207 | asection *section, | |
1208 | bfd_vma value) | |
252b5132 RH |
1209 | { |
1210 | if (config.warn_constructors) | |
1211 | einfo (_("%P: warning: global constructor %s used\n"), | |
1212 | h->root.string); | |
1213 | ||
0aa7f586 | 1214 | if (!config.build_constructors) |
1a72702b | 1215 | return; |
252b5132 | 1216 | |
1579bae1 | 1217 | ldctor_add_set_entry (h, reloc, NULL, section, value); |
252b5132 RH |
1218 | |
1219 | if (h->type == bfd_link_hash_new) | |
1220 | { | |
1221 | h->type = bfd_link_hash_undefined; | |
1222 | h->u.undef.abfd = abfd; | |
1223 | /* We don't call bfd_link_add_undef to add this to the list of | |
1224 | undefined symbols because we are going to define it | |
1225 | ourselves. */ | |
1226 | } | |
252b5132 RH |
1227 | } |
1228 | ||
1229 | /* This is called when BFD has discovered a constructor. This is only | |
1230 | called for some object file formats--those which do not handle | |
1231 | constructors in some more clever fashion. This is similar to | |
1232 | adding an element to a set, but less general. */ | |
1233 | ||
1a72702b | 1234 | static void |
1579bae1 | 1235 | constructor_callback (struct bfd_link_info *info, |
f38a2680 | 1236 | bool constructor, |
1579bae1 AM |
1237 | const char *name, |
1238 | bfd *abfd, | |
1239 | asection *section, | |
1240 | bfd_vma value) | |
252b5132 RH |
1241 | { |
1242 | char *s; | |
1243 | struct bfd_link_hash_entry *h; | |
1244 | char set_name[1 + sizeof "__CTOR_LIST__"]; | |
1245 | ||
1246 | if (config.warn_constructors) | |
1247 | einfo (_("%P: warning: global constructor %s used\n"), name); | |
1248 | ||
0aa7f586 | 1249 | if (!config.build_constructors) |
1a72702b | 1250 | return; |
252b5132 RH |
1251 | |
1252 | /* Ensure that BFD_RELOC_CTOR exists now, so that we can give a | |
1253 | useful error message. */ | |
0e86e20e | 1254 | if (bfd_reloc_type_lookup (info->output_bfd, BFD_RELOC_CTOR) == NULL |
0e1862bb | 1255 | && (bfd_link_relocatable (info) |
252b5132 | 1256 | || bfd_reloc_type_lookup (abfd, BFD_RELOC_CTOR) == NULL)) |
df5f2391 | 1257 | einfo (_("%F%P: BFD backend error: BFD_RELOC_CTOR unsupported\n")); |
252b5132 RH |
1258 | |
1259 | s = set_name; | |
1260 | if (bfd_get_symbol_leading_char (abfd) != '\0') | |
1261 | *s++ = bfd_get_symbol_leading_char (abfd); | |
1262 | if (constructor) | |
1263 | strcpy (s, "__CTOR_LIST__"); | |
1264 | else | |
1265 | strcpy (s, "__DTOR_LIST__"); | |
1266 | ||
f38a2680 | 1267 | h = bfd_link_hash_lookup (info->hash, set_name, true, true, true); |
252b5132 | 1268 | if (h == (struct bfd_link_hash_entry *) NULL) |
df5f2391 | 1269 | einfo (_("%F%P: bfd_link_hash_lookup failed: %E\n")); |
252b5132 RH |
1270 | if (h->type == bfd_link_hash_new) |
1271 | { | |
1272 | h->type = bfd_link_hash_undefined; | |
1273 | h->u.undef.abfd = abfd; | |
1274 | /* We don't call bfd_link_add_undef to add this to the list of | |
1275 | undefined symbols because we are going to define it | |
1276 | ourselves. */ | |
1277 | } | |
1278 | ||
1279 | ldctor_add_set_entry (h, BFD_RELOC_CTOR, name, section, value); | |
252b5132 RH |
1280 | } |
1281 | ||
1282 | /* A structure used by warning_callback to pass information through | |
1283 | bfd_map_over_sections. */ | |
1284 | ||
0125cdf2 NC |
1285 | struct warning_callback_info |
1286 | { | |
f38a2680 | 1287 | bool found; |
252b5132 RH |
1288 | const char *warning; |
1289 | const char *symbol; | |
1290 | asymbol **asymbols; | |
1291 | }; | |
1292 | ||
4c6d802e L |
1293 | /* Look through the relocs to see if we can find a plausible address |
1294 | for SYMBOL in ABFD. Return TRUE if found. Otherwise return FALSE. */ | |
1295 | ||
f38a2680 | 1296 | static bool |
4c6d802e L |
1297 | symbol_warning (const char *warning, const char *symbol, bfd *abfd) |
1298 | { | |
1299 | struct warning_callback_info cinfo; | |
1300 | ||
1301 | if (!bfd_generic_link_read_symbols (abfd)) | |
df5f2391 | 1302 | einfo (_("%F%P: %pB: could not read symbols: %E\n"), abfd); |
4c6d802e | 1303 | |
f38a2680 | 1304 | cinfo.found = false; |
4c6d802e L |
1305 | cinfo.warning = warning; |
1306 | cinfo.symbol = symbol; | |
1307 | cinfo.asymbols = bfd_get_outsymbols (abfd); | |
1308 | bfd_map_over_sections (abfd, warning_find_reloc, &cinfo); | |
1309 | return cinfo.found; | |
1310 | } | |
1311 | ||
252b5132 RH |
1312 | /* This is called when there is a reference to a warning symbol. */ |
1313 | ||
1a72702b | 1314 | static void |
1579bae1 AM |
1315 | warning_callback (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1316 | const char *warning, | |
1317 | const char *symbol, | |
1318 | bfd *abfd, | |
1319 | asection *section, | |
1320 | bfd_vma address) | |
252b5132 RH |
1321 | { |
1322 | /* This is a hack to support warn_multiple_gp. FIXME: This should | |
1323 | have a cleaner interface, but what? */ | |
0aa7f586 | 1324 | if (!config.warn_multiple_gp |
252b5132 | 1325 | && strcmp (warning, "using multiple gp values") == 0) |
1a72702b | 1326 | return; |
252b5132 RH |
1327 | |
1328 | if (section != NULL) | |
df5f2391 | 1329 | einfo ("%P: %C: %s%s\n", abfd, section, address, _("warning: "), warning); |
252b5132 | 1330 | else if (abfd == NULL) |
300475fe | 1331 | einfo ("%P: %s%s\n", _("warning: "), warning); |
252b5132 | 1332 | else if (symbol == NULL) |
df5f2391 | 1333 | einfo ("%P: %pB: %s%s\n", abfd, _("warning: "), warning); |
0aa7f586 | 1334 | else if (!symbol_warning (warning, symbol, abfd)) |
252b5132 | 1335 | { |
4c6d802e L |
1336 | bfd *b; |
1337 | /* Search all input files for a reference to SYMBOL. */ | |
c72f2fb2 | 1338 | for (b = info->input_bfds; b; b = b->link.next) |
4c6d802e | 1339 | if (b != abfd && symbol_warning (warning, symbol, b)) |
1a72702b | 1340 | return; |
df5f2391 | 1341 | einfo ("%P: %pB: %s%s\n", abfd, _("warning: "), warning); |
252b5132 | 1342 | } |
252b5132 RH |
1343 | } |
1344 | ||
1345 | /* This is called by warning_callback for each section. It checks the | |
1346 | relocs of the section to see if it can find a reference to the | |
1347 | symbol which triggered the warning. If it can, it uses the reloc | |
1348 | to give an error message with a file and line number. */ | |
1349 | ||
1350 | static void | |
1579bae1 | 1351 | warning_find_reloc (bfd *abfd, asection *sec, void *iarg) |
252b5132 | 1352 | { |
1e9cc1c2 | 1353 | struct warning_callback_info *info = (struct warning_callback_info *) iarg; |
252b5132 RH |
1354 | long relsize; |
1355 | arelent **relpp; | |
1356 | long relcount; | |
1357 | arelent **p, **pend; | |
1358 | ||
1359 | if (info->found) | |
1360 | return; | |
1361 | ||
1362 | relsize = bfd_get_reloc_upper_bound (abfd, sec); | |
1363 | if (relsize < 0) | |
df5f2391 | 1364 | einfo (_("%F%P: %pB: could not read relocs: %E\n"), abfd); |
252b5132 RH |
1365 | if (relsize == 0) |
1366 | return; | |
1367 | ||
1e9cc1c2 | 1368 | relpp = (arelent **) xmalloc (relsize); |
252b5132 RH |
1369 | relcount = bfd_canonicalize_reloc (abfd, sec, relpp, info->asymbols); |
1370 | if (relcount < 0) | |
df5f2391 | 1371 | einfo (_("%F%P: %pB: could not read relocs: %E\n"), abfd); |
252b5132 RH |
1372 | |
1373 | p = relpp; | |
1374 | pend = p + relcount; | |
1375 | for (; p < pend && *p != NULL; p++) | |
1376 | { | |
1377 | arelent *q = *p; | |
1378 | ||
1379 | if (q->sym_ptr_ptr != NULL | |
1380 | && *q->sym_ptr_ptr != NULL | |
1381 | && strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), info->symbol) == 0) | |
1382 | { | |
1383 | /* We found a reloc for the symbol we are looking for. */ | |
df5f2391 | 1384 | einfo ("%P: %C: %s%s\n", abfd, sec, q->address, _("warning: "), |
300475fe | 1385 | info->warning); |
f38a2680 | 1386 | info->found = true; |
252b5132 RH |
1387 | break; |
1388 | } | |
1389 | } | |
1390 | ||
1391 | free (relpp); | |
1392 | } | |
1393 | ||
23ae20f5 NC |
1394 | #if SUPPORT_ERROR_HANDLING_SCRIPT |
1395 | char * error_handling_script = NULL; | |
1396 | #endif | |
1397 | ||
252b5132 RH |
1398 | /* This is called when an undefined symbol is found. */ |
1399 | ||
1a72702b | 1400 | static void |
0e86e20e | 1401 | undefined_symbol (struct bfd_link_info *info, |
1579bae1 AM |
1402 | const char *name, |
1403 | bfd *abfd, | |
1404 | asection *section, | |
1405 | bfd_vma address, | |
f38a2680 | 1406 | bool error) |
252b5132 RH |
1407 | { |
1408 | static char *error_name; | |
1409 | static unsigned int error_count; | |
1410 | ||
1411 | #define MAX_ERRORS_IN_A_ROW 5 | |
1412 | ||
0e86e20e | 1413 | if (info->ignore_hash != NULL |
f38a2680 | 1414 | && bfd_hash_lookup (info->ignore_hash, name, false, false) != NULL) |
1a72702b | 1415 | return; |
0e86e20e | 1416 | |
252b5132 RH |
1417 | if (config.warn_once) |
1418 | { | |
252b5132 | 1419 | /* Only warn once about a particular undefined symbol. */ |
0e86e20e | 1420 | add_ignoresym (info, name); |
252b5132 RH |
1421 | } |
1422 | ||
1423 | /* We never print more than a reasonable number of errors in a row | |
1424 | for a single symbol. */ | |
1579bae1 | 1425 | if (error_name != NULL |
252b5132 RH |
1426 | && strcmp (name, error_name) == 0) |
1427 | ++error_count; | |
1428 | else | |
1429 | { | |
1430 | error_count = 0; | |
5e2ab612 | 1431 | free (error_name); |
d1b2b2dc | 1432 | error_name = xstrdup (name); |
252b5132 RH |
1433 | } |
1434 | ||
23ae20f5 NC |
1435 | #if SUPPORT_ERROR_HANDLING_SCRIPT |
1436 | if (error_handling_script != NULL | |
1437 | && error_count < MAX_ERRORS_IN_A_ROW) | |
1438 | { | |
1439 | char * argv[4]; | |
1440 | const char * res; | |
1441 | int status, err; | |
1442 | ||
1443 | argv[0] = error_handling_script; | |
93cf38c0 | 1444 | argv[1] = "undefined-symbol"; |
23ae20f5 NC |
1445 | argv[2] = (char *) name; |
1446 | argv[3] = NULL; | |
1447 | ||
1448 | if (verbose) | |
1449 | einfo (_("%P: About to run error handling script '%s' with arguments: '%s' '%s'\n"), | |
1450 | argv[0], argv[1], argv[2]); | |
1451 | ||
1452 | res = pex_one (PEX_SEARCH, error_handling_script, argv, | |
1453 | N_("error handling script"), | |
1454 | NULL /* Send stdout to random, temp file. */, | |
1455 | NULL /* Write to stderr. */, | |
1456 | &status, &err); | |
1457 | if (res != NULL) | |
1458 | { | |
1459 | einfo (_("%P: Failed to run error handling script '%s', reason: "), | |
1460 | error_handling_script); | |
1461 | /* FIXME: We assume here that errrno == err. */ | |
1462 | perror (res); | |
1463 | } | |
1464 | /* We ignore the return status of the script and | |
1465 | carry on to issue the normal error message. */ | |
1466 | } | |
1467 | #endif /* SUPPORT_ERROR_HANDLING_SCRIPT */ | |
1468 | ||
252b5132 RH |
1469 | if (section != NULL) |
1470 | { | |
1471 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1472 | { |
0b28295d | 1473 | if (error) |
df5f2391 | 1474 | einfo (_("%X%P: %C: undefined reference to `%pT'\n"), |
0b28295d ILT |
1475 | abfd, section, address, name); |
1476 | else | |
df5f2391 | 1477 | einfo (_("%P: %C: warning: undefined reference to `%pT'\n"), |
0b28295d | 1478 | abfd, section, address, name); |
b6f29aaa | 1479 | } |
252b5132 | 1480 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1481 | { |
1482 | if (error) | |
df5f2391 | 1483 | einfo (_("%X%P: %D: more undefined references to `%pT' follow\n"), |
0b28295d ILT |
1484 | abfd, section, address, name); |
1485 | else | |
df5f2391 | 1486 | einfo (_("%P: %D: warning: more undefined references to `%pT' follow\n"), |
0b28295d ILT |
1487 | abfd, section, address, name); |
1488 | } | |
1489 | else if (error) | |
1490 | einfo ("%X"); | |
252b5132 RH |
1491 | } |
1492 | else | |
1493 | { | |
1494 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1495 | { |
0b28295d | 1496 | if (error) |
df5f2391 | 1497 | einfo (_("%X%P: %pB: undefined reference to `%pT'\n"), |
0b28295d ILT |
1498 | abfd, name); |
1499 | else | |
df5f2391 | 1500 | einfo (_("%P: %pB: warning: undefined reference to `%pT'\n"), |
0b28295d | 1501 | abfd, name); |
b6f29aaa | 1502 | } |
252b5132 | 1503 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1504 | { |
1505 | if (error) | |
df5f2391 | 1506 | einfo (_("%X%P: %pB: more undefined references to `%pT' follow\n"), |
0b28295d ILT |
1507 | abfd, name); |
1508 | else | |
df5f2391 | 1509 | einfo (_("%P: %pB: warning: more undefined references to `%pT' follow\n"), |
0b28295d ILT |
1510 | abfd, name); |
1511 | } | |
1512 | else if (error) | |
1513 | einfo ("%X"); | |
252b5132 | 1514 | } |
252b5132 RH |
1515 | } |
1516 | ||
8aae64e6 AO |
1517 | /* Counter to limit the number of relocation overflow error messages |
1518 | to print. Errors are printed as it is decremented. When it's | |
1519 | called and the counter is zero, a final message is printed | |
1520 | indicating more relocations were omitted. When it gets to -1, no | |
1521 | such errors are printed. If it's initially set to a value less | |
1522 | than -1, all such errors will be printed (--verbose does this). */ | |
1523 | ||
1524 | int overflow_cutoff_limit = 10; | |
1525 | ||
252b5132 RH |
1526 | /* This is called when a reloc overflows. */ |
1527 | ||
1a72702b | 1528 | static void |
0e86e20e | 1529 | reloc_overflow (struct bfd_link_info *info, |
dfeffb9f | 1530 | struct bfd_link_hash_entry *entry, |
1579bae1 AM |
1531 | const char *name, |
1532 | const char *reloc_name, | |
1533 | bfd_vma addend, | |
1534 | bfd *abfd, | |
1535 | asection *section, | |
1536 | bfd_vma address) | |
252b5132 | 1537 | { |
8aae64e6 | 1538 | if (overflow_cutoff_limit == -1) |
1a72702b | 1539 | return; |
8aae64e6 | 1540 | |
a5990ada | 1541 | einfo ("%X%H:", abfd, section, address); |
8aae64e6 AO |
1542 | |
1543 | if (overflow_cutoff_limit >= 0 | |
1544 | && overflow_cutoff_limit-- == 0) | |
1545 | { | |
1546 | einfo (_(" additional relocation overflows omitted from the output\n")); | |
1a72702b | 1547 | return; |
8aae64e6 AO |
1548 | } |
1549 | ||
dfeffb9f L |
1550 | if (entry) |
1551 | { | |
1552 | while (entry->type == bfd_link_hash_indirect | |
1553 | || entry->type == bfd_link_hash_warning) | |
1554 | entry = entry->u.i.link; | |
1555 | switch (entry->type) | |
1556 | { | |
1557 | case bfd_link_hash_undefined: | |
1558 | case bfd_link_hash_undefweak: | |
0aa7f586 | 1559 | einfo (_(" relocation truncated to fit: " |
c1c8c1ef | 1560 | "%s against undefined symbol `%pT'"), |
dfeffb9f L |
1561 | reloc_name, entry->root.string); |
1562 | break; | |
1563 | case bfd_link_hash_defined: | |
1564 | case bfd_link_hash_defweak: | |
0aa7f586 | 1565 | einfo (_(" relocation truncated to fit: " |
c1c8c1ef | 1566 | "%s against symbol `%pT' defined in %pA section in %pB"), |
dfeffb9f | 1567 | reloc_name, entry->root.string, |
a6e1b90f L |
1568 | entry->u.def.section, |
1569 | entry->u.def.section == bfd_abs_section_ptr | |
0e86e20e | 1570 | ? info->output_bfd : entry->u.def.section->owner); |
dfeffb9f L |
1571 | break; |
1572 | default: | |
1573 | abort (); | |
1574 | break; | |
1575 | } | |
1576 | } | |
1577 | else | |
c1c8c1ef | 1578 | einfo (_(" relocation truncated to fit: %s against `%pT'"), |
dfeffb9f | 1579 | reloc_name, name); |
252b5132 RH |
1580 | if (addend != 0) |
1581 | einfo ("+%v", addend); | |
1582 | einfo ("\n"); | |
252b5132 RH |
1583 | } |
1584 | ||
1585 | /* This is called when a dangerous relocation is made. */ | |
1586 | ||
1a72702b | 1587 | static void |
1579bae1 AM |
1588 | reloc_dangerous (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1589 | const char *message, | |
1590 | bfd *abfd, | |
1591 | asection *section, | |
1592 | bfd_vma address) | |
252b5132 | 1593 | { |
a5990ada | 1594 | einfo (_("%X%H: dangerous relocation: %s\n"), |
e1fffbe6 | 1595 | abfd, section, address, message); |
252b5132 RH |
1596 | } |
1597 | ||
1598 | /* This is called when a reloc is being generated attached to a symbol | |
1599 | that is not being output. */ | |
1600 | ||
1a72702b | 1601 | static void |
1579bae1 AM |
1602 | unattached_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1603 | const char *name, | |
1604 | bfd *abfd, | |
1605 | asection *section, | |
1606 | bfd_vma address) | |
252b5132 | 1607 | { |
a5990ada | 1608 | einfo (_("%X%H: reloc refers to symbol `%pT' which is not being output\n"), |
e1fffbe6 | 1609 | abfd, section, address, name); |
252b5132 RH |
1610 | } |
1611 | ||
1612 | /* This is called if link_info.notice_all is set, or when a symbol in | |
1613 | link_info.notice_hash is found. Symbols are put in notice_hash | |
5d3236ee DK |
1614 | using the -y option, while notice_all is set if the --cref option |
1615 | has been supplied, or if there are any NOCROSSREFS sections in the | |
1616 | linker script; and if plugins are active, since they need to monitor | |
1617 | all references from non-IR files. */ | |
252b5132 | 1618 | |
f38a2680 | 1619 | static bool |
1579bae1 | 1620 | notice (struct bfd_link_info *info, |
35ed3f94 | 1621 | struct bfd_link_hash_entry *h, |
46135103 | 1622 | struct bfd_link_hash_entry *inh ATTRIBUTE_UNUSED, |
1579bae1 AM |
1623 | bfd *abfd, |
1624 | asection *section, | |
16d96b5b | 1625 | bfd_vma value, |
46135103 | 1626 | flagword flags ATTRIBUTE_UNUSED) |
252b5132 | 1627 | { |
35ed3f94 AM |
1628 | const char *name; |
1629 | ||
1630 | if (h == NULL) | |
5061a885 AM |
1631 | { |
1632 | if (command_line.cref || nocrossref_list != NULL) | |
1e9cc1c2 | 1633 | return handle_asneeded_cref (abfd, (enum notice_asneeded_action) value); |
f38a2680 | 1634 | return true; |
5061a885 AM |
1635 | } |
1636 | ||
35ed3f94 | 1637 | name = h->root.string; |
5d3236ee | 1638 | if (info->notice_hash != NULL |
f38a2680 | 1639 | && bfd_hash_lookup (info->notice_hash, name, false, false) != NULL) |
252b5132 RH |
1640 | { |
1641 | if (bfd_is_und_section (section)) | |
df5f2391 | 1642 | einfo (_("%P: %pB: reference to %s\n"), abfd, name); |
252b5132 | 1643 | else |
df5f2391 | 1644 | einfo (_("%P: %pB: definition of %s\n"), abfd, name); |
252b5132 RH |
1645 | } |
1646 | ||
1647 | if (command_line.cref || nocrossref_list != NULL) | |
1648 | add_cref (name, abfd, section, value); | |
1649 | ||
f38a2680 | 1650 | return true; |
252b5132 | 1651 | } |