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252b5132 | 1 | /* Main program of GNU linker. |
fd67aa11 | 2 | Copyright (C) 1991-2024 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 | 25 | #include "libiberty.h" |
252b5132 | 26 | #include "bfdlink.h" |
1ff6de03 | 27 | #include "ctf-api.h" |
5af11cab | 28 | #include "filenames.h" |
cae64165 | 29 | #include "elf/common.h" |
252b5132 RH |
30 | |
31 | #include "ld.h" | |
32 | #include "ldmain.h" | |
33 | #include "ldmisc.h" | |
34 | #include "ldwrite.h" | |
252b5132 RH |
35 | #include "ldexp.h" |
36 | #include "ldlang.h" | |
df2a7313 | 37 | #include <ldgram.h> |
252b5132 RH |
38 | #include "ldlex.h" |
39 | #include "ldfile.h" | |
b71e2778 | 40 | #include "ldemul.h" |
252b5132 | 41 | #include "ldctor.h" |
0381901e | 42 | #if BFD_SUPPORTS_PLUGINS |
5d3236ee DK |
43 | #include "plugin.h" |
44 | #include "plugin-api.h" | |
0381901e | 45 | #endif /* BFD_SUPPORTS_PLUGINS */ |
252b5132 | 46 | |
0125cdf2 | 47 | /* Somewhere above, sys/stat.h got included. */ |
252b5132 RH |
48 | #if !defined(S_ISDIR) && defined(S_IFDIR) |
49 | #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) | |
50 | #endif | |
51 | ||
52 | #include <string.h> | |
53 | ||
9c8ebd6a DJ |
54 | #ifndef TARGET_SYSTEM_ROOT |
55 | #define TARGET_SYSTEM_ROOT "" | |
56 | #endif | |
57 | ||
252b5132 RH |
58 | /* EXPORTS */ |
59 | ||
53d25da6 AM |
60 | FILE *saved_script_handle = NULL; |
61 | FILE *previous_script_handle = NULL; | |
f38a2680 | 62 | bool force_make_executable = false; |
53d25da6 | 63 | |
252b5132 RH |
64 | char *default_target; |
65 | const char *output_filename = "a.out"; | |
66 | ||
67 | /* Name this program was invoked by. */ | |
68 | char *program_name; | |
69 | ||
9c8ebd6a | 70 | /* The prefix for system library directories. */ |
e2243057 | 71 | const char *ld_sysroot; |
9c8ebd6a | 72 | |
3fe38064 | 73 | /* The canonical representation of ld_sysroot. */ |
0aa7f586 | 74 | char *ld_canon_sysroot; |
3fe38064 NC |
75 | int ld_canon_sysroot_len; |
76 | ||
e8044f35 | 77 | /* Set by -G argument, for targets like MIPS ELF. */ |
252b5132 RH |
78 | int g_switch_value = 8; |
79 | ||
80 | /* Nonzero means print names of input files as processed. */ | |
727a29ba | 81 | unsigned int trace_files; |
252b5132 | 82 | |
cd6f1cf3 | 83 | /* Nonzero means report actions taken by the linker, and describe the linker script in use. */ |
f38a2680 | 84 | bool verbose; |
252b5132 RH |
85 | |
86 | /* Nonzero means version number was printed, so exit successfully | |
87 | instead of complaining if no input files are given. */ | |
f38a2680 | 88 | bool version_printed; |
252b5132 | 89 | |
b34976b6 | 90 | /* TRUE if we should demangle symbol names. */ |
f38a2680 | 91 | bool demangling; |
252b5132 | 92 | |
6e8376fa NC |
93 | bool in_section_ordering; |
94 | ||
252b5132 RH |
95 | args_type command_line; |
96 | ||
97 | ld_config_type config; | |
98 | ||
bcaa7b3e L |
99 | sort_type sort_section; |
100 | ||
e2243057 RS |
101 | static const char *get_sysroot |
102 | (int, char **); | |
0125cdf2 | 103 | static char *get_emulation |
1579bae1 | 104 | (int, char **); |
f38a2680 | 105 | static bool add_archive_element |
5d3236ee | 106 | (struct bfd_link_info *, bfd *, const char *, bfd **); |
1a72702b | 107 | static void multiple_definition |
24f58f47 | 108 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
1579bae1 | 109 | bfd *, asection *, bfd_vma); |
1a72702b | 110 | static void multiple_common |
24f58f47 AM |
111 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
112 | bfd *, enum bfd_link_hash_type, bfd_vma); | |
1a72702b | 113 | static void add_to_set |
1579bae1 AM |
114 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
115 | bfd_reloc_code_real_type, bfd *, asection *, bfd_vma); | |
1a72702b | 116 | static void constructor_callback |
f38a2680 | 117 | (struct bfd_link_info *, bool, const char *, bfd *, |
1579bae1 | 118 | asection *, bfd_vma); |
1a72702b | 119 | static void warning_callback |
1579bae1 AM |
120 | (struct bfd_link_info *, const char *, const char *, bfd *, |
121 | asection *, bfd_vma); | |
0125cdf2 | 122 | static void warning_find_reloc |
1579bae1 | 123 | (bfd *, asection *, void *); |
1a72702b | 124 | static void undefined_symbol |
1579bae1 | 125 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma, |
f38a2680 | 126 | bool); |
1a72702b | 127 | static void reloc_overflow |
dfeffb9f L |
128 | (struct bfd_link_info *, struct bfd_link_hash_entry *, const char *, |
129 | const char *, bfd_vma, bfd *, asection *, bfd_vma); | |
1a72702b | 130 | static void reloc_dangerous |
1579bae1 | 131 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
1a72702b | 132 | static void unattached_reloc |
1579bae1 | 133 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
f38a2680 | 134 | static bool notice |
35ed3f94 | 135 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
46135103 | 136 | struct bfd_link_hash_entry *, bfd *, asection *, bfd_vma, flagword); |
0125cdf2 NC |
137 | |
138 | static struct bfd_link_callbacks link_callbacks = | |
139 | { | |
252b5132 RH |
140 | add_archive_element, |
141 | multiple_definition, | |
142 | multiple_common, | |
143 | add_to_set, | |
144 | constructor_callback, | |
145 | warning_callback, | |
146 | undefined_symbol, | |
147 | reloc_overflow, | |
148 | reloc_dangerous, | |
149 | unattached_reloc, | |
e1fffbe6 | 150 | notice, |
2889e75b | 151 | einfo, |
49fa1e15 AM |
152 | info_msg, |
153 | minfo, | |
1ff6de03 | 154 | ldlang_override_segment_assignment, |
3d16b64e NA |
155 | ldlang_ctf_acquire_strings, |
156 | NULL, | |
157 | ldlang_ctf_new_dynsym, | |
1ff6de03 | 158 | ldlang_write_ctf_late |
252b5132 RH |
159 | }; |
160 | ||
3b66a141 | 161 | static bfd_assert_handler_type default_bfd_assert_handler; |
4519d071 | 162 | static bfd_error_handler_type default_bfd_error_handler; |
3b66a141 | 163 | |
252b5132 RH |
164 | struct bfd_link_info link_info; |
165 | \f | |
f37b21b4 RM |
166 | struct dependency_file |
167 | { | |
168 | struct dependency_file *next; | |
169 | char *name; | |
170 | }; | |
171 | ||
172 | static struct dependency_file *dependency_files, *dependency_files_tail; | |
173 | ||
174 | void | |
175 | track_dependency_files (const char *filename) | |
176 | { | |
177 | struct dependency_file *dep | |
178 | = (struct dependency_file *) xmalloc (sizeof (*dep)); | |
179 | dep->name = xstrdup (filename); | |
180 | dep->next = NULL; | |
181 | if (dependency_files == NULL) | |
182 | dependency_files = dep; | |
183 | else | |
184 | dependency_files_tail->next = dep; | |
185 | dependency_files_tail = dep; | |
186 | } | |
187 | ||
188 | static void | |
189 | write_dependency_file (void) | |
190 | { | |
191 | FILE *out; | |
192 | struct dependency_file *dep; | |
193 | ||
194 | out = fopen (config.dependency_file, FOPEN_WT); | |
195 | if (out == NULL) | |
196 | { | |
197 | einfo (_("%F%P: cannot open dependency file %s: %E\n"), | |
198 | config.dependency_file); | |
199 | } | |
200 | ||
201 | fprintf (out, "%s:", output_filename); | |
202 | ||
203 | for (dep = dependency_files; dep != NULL; dep = dep->next) | |
204 | fprintf (out, " \\\n %s", dep->name); | |
205 | ||
206 | fprintf (out, "\n"); | |
207 | for (dep = dependency_files; dep != NULL; dep = dep->next) | |
208 | fprintf (out, "\n%s:\n", dep->name); | |
209 | ||
210 | fclose (out); | |
211 | } | |
212 | \f | |
252b5132 | 213 | static void |
498cd2a0 | 214 | ld_cleanup (void) |
252b5132 | 215 | { |
1f5e6267 AM |
216 | bfd *ibfd, *inext; |
217 | if (link_info.output_bfd) | |
218 | bfd_close_all_done (link_info.output_bfd); | |
219 | for (ibfd = link_info.input_bfds; ibfd; ibfd = inext) | |
220 | { | |
221 | inext = ibfd->link.next; | |
222 | bfd_close_all_done (ibfd); | |
223 | } | |
0381901e | 224 | #if BFD_SUPPORTS_PLUGINS |
498cd2a0 AM |
225 | plugin_call_cleanup (); |
226 | #endif | |
227 | if (output_filename && delete_output_file_on_failure) | |
228 | unlink_if_ordinary (output_filename); | |
252b5132 RH |
229 | } |
230 | ||
4519d071 | 231 | /* Hook to notice BFD assertions. */ |
3b66a141 HPN |
232 | |
233 | static void | |
234 | ld_bfd_assert_handler (const char *fmt, const char *bfdver, | |
235 | const char *file, int line) | |
236 | { | |
f38a2680 | 237 | config.make_executable = false; |
4519d071 AM |
238 | (*default_bfd_assert_handler) (fmt, bfdver, file, line); |
239 | } | |
240 | ||
241 | /* Hook the bfd error/warning handler for --fatal-warnings. */ | |
242 | ||
243 | static void | |
244 | ld_bfd_error_handler (const char *fmt, va_list ap) | |
245 | { | |
246 | if (config.fatal_warnings) | |
f38a2680 | 247 | config.make_executable = false; |
4519d071 | 248 | (*default_bfd_error_handler) (fmt, ap); |
3b66a141 HPN |
249 | } |
250 | ||
6e8376fa NC |
251 | static void |
252 | display_external_script (void) | |
253 | { | |
254 | if (saved_script_handle == NULL) | |
255 | return; | |
256 | ||
257 | static const int ld_bufsz = 8193; | |
258 | size_t n; | |
259 | char *buf = (char *) xmalloc (ld_bufsz); | |
260 | ||
261 | rewind (saved_script_handle); | |
262 | while ((n = fread (buf, 1, ld_bufsz - 1, saved_script_handle)) > 0) | |
263 | { | |
264 | buf[n] = 0; | |
265 | info_msg ("%s", buf); | |
266 | } | |
267 | rewind (saved_script_handle); | |
268 | free (buf); | |
269 | } | |
270 | ||
252b5132 | 271 | int |
1579bae1 | 272 | main (int argc, char **argv) |
252b5132 RH |
273 | { |
274 | char *emulation; | |
275 | long start_time = get_run_time (); | |
276 | ||
c774eab1 | 277 | #ifdef HAVE_LC_MESSAGES |
252b5132 | 278 | setlocale (LC_MESSAGES, ""); |
3882b010 | 279 | #endif |
3882b010 | 280 | setlocale (LC_CTYPE, ""); |
252b5132 RH |
281 | bindtextdomain (PACKAGE, LOCALEDIR); |
282 | textdomain (PACKAGE); | |
283 | ||
284 | program_name = argv[0]; | |
285 | xmalloc_set_program_name (program_name); | |
286 | ||
869b9d07 MM |
287 | expandargv (&argc, &argv); |
288 | ||
bf2dd8d7 AM |
289 | if (bfd_init () != BFD_INIT_MAGIC) |
290 | einfo (_("%F%P: fatal error: libbfd ABI mismatch\n")); | |
252b5132 RH |
291 | |
292 | bfd_set_error_program_name (program_name); | |
293 | ||
3b66a141 HPN |
294 | /* We want to notice and fail on those nasty BFD assertions which are |
295 | likely to signal incorrect output being generated but otherwise may | |
296 | leave no trace. */ | |
297 | default_bfd_assert_handler = bfd_set_assert_handler (ld_bfd_assert_handler); | |
298 | ||
4519d071 AM |
299 | /* Also hook the bfd error/warning handler for --fatal-warnings. */ |
300 | default_bfd_error_handler = bfd_set_error_handler (ld_bfd_error_handler); | |
301 | ||
498cd2a0 | 302 | xatexit (ld_cleanup); |
252b5132 | 303 | |
e2243057 RS |
304 | /* Set up the sysroot directory. */ |
305 | ld_sysroot = get_sysroot (argc, argv); | |
306 | if (*ld_sysroot) | |
3074964f | 307 | ld_canon_sysroot = lrealpath (ld_sysroot); |
3fe38064 | 308 | if (ld_canon_sysroot) |
889be5db DR |
309 | { |
310 | ld_canon_sysroot_len = strlen (ld_canon_sysroot); | |
311 | ||
312 | /* is_sysrooted_pathname() relies on no trailing dirsep. */ | |
313 | if (ld_canon_sysroot_len > 0 | |
314 | && IS_DIR_SEPARATOR (ld_canon_sysroot [ld_canon_sysroot_len - 1])) | |
f37b21b4 | 315 | ld_canon_sysroot [--ld_canon_sysroot_len] = '\0'; |
889be5db | 316 | } |
3fe38064 NC |
317 | else |
318 | ld_canon_sysroot_len = -1; | |
319 | ||
252b5132 RH |
320 | /* Set the default BFD target based on the configured target. Doing |
321 | this permits the linker to be configured for a particular target, | |
322 | and linked against a shared BFD library which was configured for | |
323 | a different target. The macro TARGET is defined by Makefile. */ | |
0aa7f586 | 324 | if (!bfd_set_default_target (TARGET)) |
252b5132 RH |
325 | { |
326 | einfo (_("%X%P: can't set BFD default target to `%s': %E\n"), TARGET); | |
327 | xexit (1); | |
328 | } | |
329 | ||
b47c4208 AM |
330 | #if YYDEBUG |
331 | { | |
332 | extern int yydebug; | |
333 | yydebug = 1; | |
334 | } | |
335 | #endif | |
336 | ||
f38a2680 | 337 | config.build_constructors = true; |
c76308d2 | 338 | config.rpath_separator = ':'; |
a854a4a7 AM |
339 | config.split_by_reloc = (unsigned) -1; |
340 | config.split_by_file = (bfd_size_type) -1; | |
f38a2680 AM |
341 | config.make_executable = true; |
342 | config.magic_demand_paged = true; | |
343 | config.text_read_only = true; | |
344 | config.print_map_discarded = true; | |
4f9d22a0 | 345 | link_info.disable_target_specific_optimizations = -1; |
3b95049e | 346 | |
f38a2680 AM |
347 | command_line.warn_mismatch = true; |
348 | command_line.warn_search_mismatch = true; | |
02b0b1aa | 349 | command_line.check_section_addresses = -1; |
bcaa7b3e | 350 | |
252b5132 RH |
351 | /* We initialize DEMANGLING based on the environment variable |
352 | COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the | |
353 | output of the linker, unless COLLECT_NO_DEMANGLE is set in the | |
354 | environment. Acting the same way here lets us provide the same | |
355 | interface by default. */ | |
356 | demangling = getenv ("COLLECT_NO_DEMANGLE") == NULL; | |
357 | ||
f38a2680 AM |
358 | link_info.allow_undefined_version = true; |
359 | link_info.keep_memory = true; | |
a8dde0a2 | 360 | link_info.max_cache_size = (bfd_size_type) -1; |
f38a2680 AM |
361 | link_info.combreloc = true; |
362 | link_info.strip_discarded = true; | |
363 | link_info.prohibit_multiple_definition_absolute = false; | |
b32632c4 | 364 | link_info.textrel_check = DEFAULT_LD_TEXTREL_CHECK; |
2760f24c RG |
365 | link_info.emit_hash = DEFAULT_EMIT_SYSV_HASH; |
366 | link_info.emit_gnu_hash = DEFAULT_EMIT_GNU_HASH; | |
a9a4c53e AM |
367 | link_info.callbacks = &link_callbacks; |
368 | link_info.input_bfds_tail = &link_info.input_bfds; | |
3dbf70a2 MM |
369 | /* SVR4 linkers seem to set DT_INIT and DT_FINI based on magic _init |
370 | and _fini symbols. We are compatible. */ | |
371 | link_info.init_function = "_init"; | |
372 | link_info.fini_function = "_fini"; | |
a9a4c53e | 373 | link_info.relax_pass = 1; |
889c2a67 | 374 | link_info.extern_protected_data = -1; |
aec6b87e | 375 | link_info.dynamic_undefined_weak = -1; |
6f365fda | 376 | link_info.indirect_extern_access = -1; |
e0076ab3 | 377 | link_info.pei386_auto_import = -1; |
db6751f2 | 378 | link_info.spare_dynamic_tags = 5; |
967928e9 | 379 | link_info.path_separator = ':'; |
6c3bc0f8 | 380 | #ifdef DEFAULT_FLAG_COMPRESS_DEBUG |
c3620d6d | 381 | config.compress_debug = DEFAULT_COMPRESSED_DEBUG_ALGORITHM; |
6c3bc0f8 | 382 | #endif |
6734f10a | 383 | #ifdef DEFAULT_NEW_DTAGS |
91001320 | 384 | link_info.new_dtags = DEFAULT_NEW_DTAGS; |
6734f10a | 385 | #endif |
f38a2680 | 386 | link_info.start_stop_gc = false; |
cae64165 | 387 | link_info.start_stop_visibility = STV_PROTECTED; |
24718e3b | 388 | |
252b5132 | 389 | ldfile_add_arch (""); |
252b5132 RH |
390 | emulation = get_emulation (argc, argv); |
391 | ldemul_choose_mode (emulation); | |
742aeb63 | 392 | default_target = ldemul_choose_target (argc, argv); |
252b5132 | 393 | lang_init (); |
18d6a79d | 394 | ldexp_init (); |
252b5132 | 395 | ldemul_before_parse (); |
f38a2680 | 396 | lang_has_input_file = false; |
252b5132 RH |
397 | parse_args (argc, argv); |
398 | ||
2d643429 NC |
399 | if (config.hash_table_size != 0) |
400 | bfd_hash_set_default_size (config.hash_table_size); | |
401 | ||
0381901e | 402 | #if BFD_SUPPORTS_PLUGINS |
9bbc1a67 | 403 | /* Now all the plugin arguments have been gathered, we can load them. */ |
d82184d7 | 404 | plugin_load_plugins (); |
0381901e | 405 | #endif /* BFD_SUPPORTS_PLUGINS */ |
36af4a4e | 406 | |
9bbc1a67 | 407 | ldemul_set_symbols (); |
252b5132 | 408 | |
14be8564 L |
409 | /* If we have not already opened and parsed a linker script, |
410 | try the default script from command line first. */ | |
411 | if (saved_script_handle == NULL | |
412 | && command_line.default_script != NULL) | |
413 | { | |
6ec6968b | 414 | ldfile_open_script_file (command_line.default_script); |
14be8564 L |
415 | parser_input = input_script; |
416 | yyparse (); | |
417 | } | |
418 | ||
b9a8de1e NC |
419 | /* If we have not already opened and parsed a linker script |
420 | read the emulation's appropriate default script. */ | |
b90e1c6f | 421 | if (saved_script_handle == NULL) |
252b5132 | 422 | { |
252b5132 | 423 | int isfile; |
b7a26f91 | 424 | char *s = ldemul_get_script (&isfile); |
252b5132 RH |
425 | |
426 | if (isfile) | |
7d24f02c | 427 | ldfile_open_default_command_file (s); |
252b5132 | 428 | else |
b7a26f91 | 429 | { |
252b5132 | 430 | lex_string = s; |
dab69f68 | 431 | lex_redirect (s, _("built in linker script"), 1); |
252b5132 RH |
432 | } |
433 | parser_input = input_script; | |
434 | yyparse (); | |
435 | lex_string = NULL; | |
436 | } | |
437 | ||
cd6f1cf3 | 438 | if (verbose) |
b9a8de1e | 439 | { |
9cb61eab | 440 | if (saved_script_handle) |
6e8376fa | 441 | info_msg (_("using external linker script: %s"), processed_scripts->name); |
9cb61eab AM |
442 | else |
443 | info_msg (_("using internal linker script:")); | |
444 | info_msg ("\n==================================================\n"); | |
b9a8de1e NC |
445 | |
446 | if (saved_script_handle) | |
6e8376fa | 447 | display_external_script (); |
b9a8de1e NC |
448 | else |
449 | { | |
450 | int isfile; | |
451 | ||
b7a26f91 | 452 | info_msg (ldemul_get_script (&isfile)); |
b9a8de1e | 453 | } |
b7a26f91 | 454 | |
b9a8de1e NC |
455 | info_msg ("\n==================================================\n"); |
456 | } | |
457 | ||
6e8376fa NC |
458 | if (command_line.section_ordering_file) |
459 | { | |
460 | FILE *hold_script_handle; | |
461 | ||
462 | hold_script_handle = saved_script_handle; | |
463 | ldfile_open_command_file (command_line.section_ordering_file); | |
464 | if (verbose) | |
465 | display_external_script (); | |
466 | saved_script_handle = hold_script_handle; | |
467 | in_section_ordering = true; | |
468 | parser_input = input_section_ordering_script; | |
469 | yyparse (); | |
470 | in_section_ordering = false; | |
471 | ||
472 | } | |
473 | ||
7bdf4127 AB |
474 | if (command_line.force_group_allocation |
475 | || !bfd_link_relocatable (&link_info)) | |
f38a2680 | 476 | link_info.resolve_section_groups = true; |
7bdf4127 | 477 | else |
f38a2680 | 478 | link_info.resolve_section_groups = false; |
7bdf4127 | 479 | |
30824704 RM |
480 | if (command_line.print_output_format) |
481 | info_msg ("%s\n", lang_get_output_target ()); | |
482 | ||
252b5132 RH |
483 | lang_final (); |
484 | ||
61e2488c JT |
485 | /* If the only command line argument has been -v or --version or --verbose |
486 | then ignore any input files provided by linker scripts and exit now. | |
487 | We do not want to create an output file when the linker is just invoked | |
488 | to provide version information. */ | |
489 | if (argc == 2 && version_printed) | |
490 | xexit (0); | |
491 | ||
a4819f54 | 492 | if (link_info.inhibit_common_definition && !bfd_link_dll (&link_info)) |
df5f2391 | 493 | einfo (_("%F%P: --no-define-common may not be used without -shared\n")); |
a4819f54 | 494 | |
b34976b6 | 495 | if (!lang_has_input_file) |
252b5132 | 496 | { |
30824704 | 497 | if (version_printed || command_line.print_output_format) |
252b5132 | 498 | xexit (0); |
624c610d | 499 | output_unknown_cmdline_warnings (); |
df5f2391 | 500 | einfo (_("%F%P: no input files\n")); |
252b5132 RH |
501 | } |
502 | ||
5c87f94b | 503 | if (verbose) |
0125cdf2 | 504 | info_msg (_("%P: mode %s\n"), emulation); |
252b5132 RH |
505 | |
506 | ldemul_after_parse (); | |
507 | ||
3eb33b88 L |
508 | output_unknown_cmdline_warnings (); |
509 | ||
252b5132 RH |
510 | if (config.map_filename) |
511 | { | |
512 | if (strcmp (config.map_filename, "-") == 0) | |
513 | { | |
514 | config.map_file = stdout; | |
515 | } | |
516 | else | |
517 | { | |
518 | config.map_file = fopen (config.map_filename, FOPEN_WT); | |
519 | if (config.map_file == (FILE *) NULL) | |
520 | { | |
521 | bfd_set_error (bfd_error_system_call); | |
df5f2391 | 522 | einfo (_("%F%P: cannot open map file %s: %E\n"), |
252b5132 RH |
523 | config.map_filename); |
524 | } | |
525 | } | |
f38a2680 | 526 | link_info.has_map_file = true; |
252b5132 RH |
527 | } |
528 | ||
252b5132 RH |
529 | lang_process (); |
530 | ||
531 | /* Print error messages for any missing symbols, for any warning | |
6d5e62f8 | 532 | symbols, and possibly multiple definitions. */ |
0e1862bb | 533 | if (bfd_link_relocatable (&link_info)) |
f13a99db | 534 | link_info.output_bfd->flags &= ~EXEC_P; |
252b5132 | 535 | else |
f13a99db | 536 | link_info.output_bfd->flags |= EXEC_P; |
252b5132 | 537 | |
c3620d6d AM |
538 | flagword flags = 0; |
539 | switch (config.compress_debug) | |
0ce398f1 | 540 | { |
c3620d6d AM |
541 | case COMPRESS_DEBUG_GNU_ZLIB: |
542 | flags = BFD_COMPRESS; | |
543 | break; | |
544 | case COMPRESS_DEBUG_GABI_ZLIB: | |
545 | flags = BFD_COMPRESS | BFD_COMPRESS_GABI; | |
546 | break; | |
547 | case COMPRESS_DEBUG_ZSTD: | |
548 | flags = BFD_COMPRESS | BFD_COMPRESS_GABI | BFD_COMPRESS_ZSTD; | |
549 | break; | |
550 | default: | |
551 | break; | |
0ce398f1 | 552 | } |
c3620d6d AM |
553 | link_info.output_bfd->flags |
554 | |= flags & bfd_applicable_file_flags (link_info.output_bfd); | |
0ce398f1 | 555 | |
252b5132 RH |
556 | ldwrite (); |
557 | ||
558 | if (config.map_file != NULL) | |
559 | lang_map (); | |
560 | if (command_line.cref) | |
561 | output_cref (config.map_file != NULL ? config.map_file : stdout); | |
562 | if (nocrossref_list != NULL) | |
563 | check_nocrossrefs (); | |
3604cb1f TG |
564 | if (command_line.print_memory_usage) |
565 | lang_print_memory_usage (); | |
edf84efc NC |
566 | #if 0 |
567 | { | |
0aa7f586 | 568 | struct bfd_link_hash_entry *h; |
252b5132 | 569 | |
edf84efc NC |
570 | h = bfd_link_hash_lookup (link_info.hash, "__image_base__", 0,0,1); |
571 | fprintf (stderr, "lookup = %p val %lx\n", h, h ? h->u.def.value : 1); | |
572 | } | |
573 | #endif | |
18d6a79d | 574 | ldexp_finish (); |
750877ba L |
575 | lang_finish (); |
576 | ||
f37b21b4 RM |
577 | if (config.dependency_file != NULL) |
578 | write_dependency_file (); | |
579 | ||
1049f94e | 580 | /* Even if we're producing relocatable output, some non-fatal errors should |
252b5132 | 581 | be reported in the exit status. (What non-fatal errors, if any, do we |
1049f94e | 582 | want to ignore for relocatable output?) */ |
b34976b6 | 583 | if (!config.make_executable && !force_make_executable) |
252b5132 | 584 | { |
5c87f94b | 585 | if (verbose) |
0125cdf2 NC |
586 | einfo (_("%P: link errors found, deleting executable `%s'\n"), |
587 | output_filename); | |
252b5132 | 588 | |
4309cbf2 | 589 | /* The file will be removed by ld_cleanup. */ |
252b5132 RH |
590 | xexit (1); |
591 | } | |
592 | else | |
593 | { | |
1f5e6267 AM |
594 | bfd *obfd = link_info.output_bfd; |
595 | link_info.output_bfd = NULL; | |
596 | if (!bfd_close (obfd)) | |
e122316b | 597 | einfo (_("%F%P: %s: final close failed: %E\n"), output_filename); |
252b5132 RH |
598 | |
599 | /* If the --force-exe-suffix is enabled, and we're making an | |
6d5e62f8 KH |
600 | executable file and it doesn't end in .exe, copy it to one |
601 | which does. */ | |
0e1862bb L |
602 | if (!bfd_link_relocatable (&link_info) |
603 | && command_line.force_exe_suffix) | |
252b5132 RH |
604 | { |
605 | int len = strlen (output_filename); | |
0125cdf2 | 606 | |
6d5e62f8 | 607 | if (len < 4 |
252b5132 RH |
608 | || (strcasecmp (output_filename + len - 4, ".exe") != 0 |
609 | && strcasecmp (output_filename + len - 4, ".dll") != 0)) | |
610 | { | |
611 | FILE *src; | |
612 | FILE *dst; | |
613 | const int bsize = 4096; | |
1e9cc1c2 | 614 | char *buf = (char *) xmalloc (bsize); |
252b5132 | 615 | int l; |
1e9cc1c2 | 616 | char *dst_name = (char *) xmalloc (len + 5); |
0125cdf2 | 617 | |
252b5132 RH |
618 | strcpy (dst_name, output_filename); |
619 | strcat (dst_name, ".exe"); | |
620 | src = fopen (output_filename, FOPEN_RB); | |
621 | dst = fopen (dst_name, FOPEN_WB); | |
622 | ||
623 | if (!src) | |
df5f2391 | 624 | einfo (_("%F%P: unable to open for source of copy `%s'\n"), |
1579bae1 | 625 | output_filename); |
252b5132 | 626 | if (!dst) |
df5f2391 | 627 | einfo (_("%F%P: unable to open for destination of copy `%s'\n"), |
1579bae1 | 628 | dst_name); |
252b5132 RH |
629 | while ((l = fread (buf, 1, bsize, src)) > 0) |
630 | { | |
631 | int done = fwrite (buf, 1, l, dst); | |
0125cdf2 | 632 | |
252b5132 | 633 | if (done != l) |
df5f2391 | 634 | einfo (_("%P: error writing file `%s'\n"), dst_name); |
252b5132 | 635 | } |
0125cdf2 | 636 | |
252b5132 RH |
637 | fclose (src); |
638 | if (fclose (dst) == EOF) | |
df5f2391 | 639 | einfo (_("%P: error closing file `%s'\n"), dst_name); |
252b5132 RH |
640 | free (dst_name); |
641 | free (buf); | |
642 | } | |
643 | } | |
644 | } | |
645 | ||
252b5132 RH |
646 | if (config.stats) |
647 | { | |
252b5132 RH |
648 | long run_time = get_run_time () - start_time; |
649 | ||
e922bcab | 650 | fflush (stdout); |
252b5132 RH |
651 | fprintf (stderr, _("%s: total time in link: %ld.%06ld\n"), |
652 | program_name, run_time / 1000000, run_time % 1000000); | |
e922bcab | 653 | fflush (stderr); |
252b5132 RH |
654 | } |
655 | ||
1f5e6267 | 656 | /* Prevent ld_cleanup from deleting the output file. */ |
252b5132 RH |
657 | output_filename = NULL; |
658 | ||
659 | xexit (0); | |
660 | return 0; | |
661 | } | |
662 | ||
e2243057 RS |
663 | /* If the configured sysroot is relocatable, try relocating it based on |
664 | default prefix FROM. Return the relocated directory if it exists, | |
665 | otherwise return null. */ | |
666 | ||
667 | static char * | |
668 | get_relative_sysroot (const char *from ATTRIBUTE_UNUSED) | |
669 | { | |
670 | #ifdef TARGET_SYSTEM_ROOT_RELOCATABLE | |
671 | char *path; | |
672 | struct stat s; | |
673 | ||
674 | path = make_relative_prefix (program_name, from, TARGET_SYSTEM_ROOT); | |
675 | if (path) | |
676 | { | |
677 | if (stat (path, &s) == 0 && S_ISDIR (s.st_mode)) | |
678 | return path; | |
679 | free (path); | |
680 | } | |
681 | #endif | |
682 | return 0; | |
683 | } | |
684 | ||
685 | /* Return the sysroot directory. Return "" if no sysroot is being used. */ | |
686 | ||
687 | static const char * | |
688 | get_sysroot (int argc, char **argv) | |
689 | { | |
690 | int i; | |
55d5520a | 691 | const char *path = NULL; |
e2243057 RS |
692 | |
693 | for (i = 1; i < argc; i++) | |
08dedd66 | 694 | if (startswith (argv[i], "--sysroot=")) |
55d5520a | 695 | path = argv[i] + strlen ("--sysroot="); |
e2243057 | 696 | |
55d5520a AM |
697 | if (!path) |
698 | path = get_relative_sysroot (BINDIR); | |
e2243057 | 699 | |
55d5520a AM |
700 | if (!path) |
701 | path = get_relative_sysroot (TOOLBINDIR); | |
702 | ||
703 | if (!path) | |
704 | path = TARGET_SYSTEM_ROOT; | |
705 | ||
706 | if (IS_DIR_SEPARATOR (*path) && path[1] == 0) | |
707 | path = ""; | |
e2243057 | 708 | |
55d5520a | 709 | return path; |
e2243057 RS |
710 | } |
711 | ||
252b5132 RH |
712 | /* We need to find any explicitly given emulation in order to initialize the |
713 | state that's needed by the lex&yacc argument parser (parse_args). */ | |
714 | ||
715 | static char * | |
1579bae1 | 716 | get_emulation (int argc, char **argv) |
252b5132 RH |
717 | { |
718 | char *emulation; | |
719 | int i; | |
720 | ||
721 | emulation = getenv (EMULATION_ENVIRON); | |
722 | if (emulation == NULL) | |
723 | emulation = DEFAULT_EMULATION; | |
724 | ||
725 | for (i = 1; i < argc; i++) | |
726 | { | |
08dedd66 | 727 | if (startswith (argv[i], "-m")) |
252b5132 RH |
728 | { |
729 | if (argv[i][2] == '\0') | |
730 | { | |
731 | /* -m EMUL */ | |
732 | if (i < argc - 1) | |
733 | { | |
734 | emulation = argv[i + 1]; | |
735 | i++; | |
736 | } | |
737 | else | |
df5f2391 | 738 | einfo (_("%F%P: missing argument to -m\n")); |
252b5132 RH |
739 | } |
740 | else if (strcmp (argv[i], "-mips1") == 0 | |
741 | || strcmp (argv[i], "-mips2") == 0 | |
742 | || strcmp (argv[i], "-mips3") == 0 | |
d1cf510e | 743 | || strcmp (argv[i], "-mips4") == 0 |
6f33421c CD |
744 | || strcmp (argv[i], "-mips5") == 0 |
745 | || strcmp (argv[i], "-mips32") == 0 | |
746 | || strcmp (argv[i], "-mips32r2") == 0 | |
c0f6e439 MJ |
747 | || strcmp (argv[i], "-mips32r3") == 0 |
748 | || strcmp (argv[i], "-mips32r5") == 0 | |
7361da2c | 749 | || strcmp (argv[i], "-mips32r6") == 0 |
5f74bc13 | 750 | || strcmp (argv[i], "-mips64") == 0 |
7361da2c | 751 | || strcmp (argv[i], "-mips64r2") == 0 |
c0f6e439 MJ |
752 | || strcmp (argv[i], "-mips64r3") == 0 |
753 | || strcmp (argv[i], "-mips64r5") == 0 | |
7361da2c | 754 | || strcmp (argv[i], "-mips64r6") == 0) |
252b5132 | 755 | { |
31d677f9 | 756 | /* FIXME: The arguments -mips1, -mips2, -mips3, etc. are |
252b5132 RH |
757 | passed to the linker by some MIPS compilers. They |
758 | generally tell the linker to use a slightly different | |
759 | library path. Perhaps someday these should be | |
760 | implemented as emulations; until then, we just ignore | |
761 | the arguments and hope that nobody ever creates | |
762 | emulations named ips1, ips2 or ips3. */ | |
763 | } | |
764 | else if (strcmp (argv[i], "-m486") == 0) | |
765 | { | |
766 | /* FIXME: The argument -m486 is passed to the linker on | |
767 | some Linux systems. Hope that nobody creates an | |
768 | emulation named 486. */ | |
769 | } | |
770 | else | |
771 | { | |
772 | /* -mEMUL */ | |
773 | emulation = &argv[i][2]; | |
774 | } | |
775 | } | |
776 | } | |
777 | ||
778 | return emulation; | |
779 | } | |
780 | ||
252b5132 | 781 | void |
1579bae1 | 782 | add_ysym (const char *name) |
252b5132 | 783 | { |
1579bae1 | 784 | if (link_info.notice_hash == NULL) |
252b5132 | 785 | { |
0aa7f586 AM |
786 | link_info.notice_hash |
787 | = (struct bfd_hash_table *) xmalloc (sizeof (struct bfd_hash_table)); | |
66eb6687 AM |
788 | if (!bfd_hash_table_init_n (link_info.notice_hash, |
789 | bfd_hash_newfunc, | |
790 | sizeof (struct bfd_hash_entry), | |
791 | 61)) | |
df5f2391 | 792 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); |
6d5e62f8 | 793 | } |
252b5132 | 794 | |
f38a2680 | 795 | if (bfd_hash_lookup (link_info.notice_hash, name, true, true) == NULL) |
df5f2391 | 796 | einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); |
252b5132 RH |
797 | } |
798 | ||
0e86e20e AM |
799 | void |
800 | add_ignoresym (struct bfd_link_info *info, const char *name) | |
801 | { | |
802 | if (info->ignore_hash == NULL) | |
803 | { | |
804 | info->ignore_hash = xmalloc (sizeof (struct bfd_hash_table)); | |
0aa7f586 AM |
805 | if (!bfd_hash_table_init_n (info->ignore_hash, |
806 | bfd_hash_newfunc, | |
807 | sizeof (struct bfd_hash_entry), | |
808 | 61)) | |
df5f2391 | 809 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); |
0e86e20e AM |
810 | } |
811 | ||
f38a2680 | 812 | if (bfd_hash_lookup (info->ignore_hash, name, true, true) == NULL) |
df5f2391 | 813 | einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); |
0e86e20e AM |
814 | } |
815 | ||
252b5132 RH |
816 | /* Record a symbol to be wrapped, from the --wrap option. */ |
817 | ||
818 | void | |
1579bae1 | 819 | add_wrap (const char *name) |
252b5132 RH |
820 | { |
821 | if (link_info.wrap_hash == NULL) | |
822 | { | |
0aa7f586 AM |
823 | link_info.wrap_hash |
824 | = (struct bfd_hash_table *) xmalloc (sizeof (struct bfd_hash_table)); | |
66eb6687 AM |
825 | if (!bfd_hash_table_init_n (link_info.wrap_hash, |
826 | bfd_hash_newfunc, | |
827 | sizeof (struct bfd_hash_entry), | |
828 | 61)) | |
df5f2391 | 829 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); |
252b5132 | 830 | } |
0125cdf2 | 831 | |
f38a2680 | 832 | if (bfd_hash_lookup (link_info.wrap_hash, name, true, true) == NULL) |
df5f2391 | 833 | einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); |
252b5132 RH |
834 | } |
835 | ||
836 | /* Handle the -retain-symbols-file option. */ | |
837 | ||
838 | void | |
1579bae1 | 839 | add_keepsyms_file (const char *filename) |
252b5132 RH |
840 | { |
841 | FILE *file; | |
842 | char *buf; | |
843 | size_t bufsize; | |
844 | int c; | |
845 | ||
846 | if (link_info.strip == strip_some) | |
847 | einfo (_("%X%P: error: duplicate retain-symbols-file\n")); | |
848 | ||
849 | file = fopen (filename, "r"); | |
1579bae1 | 850 | if (file == NULL) |
252b5132 RH |
851 | { |
852 | bfd_set_error (bfd_error_system_call); | |
853 | einfo ("%X%P: %s: %E\n", filename); | |
854 | return; | |
855 | } | |
856 | ||
1e9cc1c2 NC |
857 | link_info.keep_hash = (struct bfd_hash_table *) |
858 | xmalloc (sizeof (struct bfd_hash_table)); | |
66eb6687 AM |
859 | if (!bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc, |
860 | sizeof (struct bfd_hash_entry))) | |
df5f2391 | 861 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); |
252b5132 RH |
862 | |
863 | bufsize = 100; | |
1e9cc1c2 | 864 | buf = (char *) xmalloc (bufsize); |
252b5132 RH |
865 | |
866 | c = getc (file); | |
867 | while (c != EOF) | |
868 | { | |
3882b010 | 869 | while (ISSPACE (c)) |
252b5132 RH |
870 | c = getc (file); |
871 | ||
872 | if (c != EOF) | |
873 | { | |
874 | size_t len = 0; | |
875 | ||
0aa7f586 | 876 | while (!ISSPACE (c) && c != EOF) |
252b5132 RH |
877 | { |
878 | buf[len] = c; | |
879 | ++len; | |
880 | if (len >= bufsize) | |
881 | { | |
882 | bufsize *= 2; | |
1e9cc1c2 | 883 | buf = (char *) xrealloc (buf, bufsize); |
252b5132 RH |
884 | } |
885 | c = getc (file); | |
886 | } | |
887 | ||
888 | buf[len] = '\0'; | |
889 | ||
f38a2680 | 890 | if (bfd_hash_lookup (link_info.keep_hash, buf, true, true) == NULL) |
df5f2391 | 891 | einfo (_("%F%P: bfd_hash_lookup for insertion failed: %E\n")); |
252b5132 RH |
892 | } |
893 | } | |
894 | ||
895 | if (link_info.strip != strip_none) | |
896 | einfo (_("%P: `-retain-symbols-file' overrides `-s' and `-S'\n")); | |
897 | ||
5ed6aba4 | 898 | free (buf); |
252b5132 | 899 | link_info.strip = strip_some; |
d9313f4f | 900 | fclose (file); |
252b5132 RH |
901 | } |
902 | \f | |
903 | /* Callbacks from the BFD linker routines. */ | |
904 | ||
905 | /* This is called when BFD has decided to include an archive member in | |
906 | a link. */ | |
907 | ||
f38a2680 | 908 | static bool |
e1fffbe6 | 909 | add_archive_element (struct bfd_link_info *info, |
1579bae1 | 910 | bfd *abfd, |
5d3236ee DK |
911 | const char *name, |
912 | bfd **subsbfd ATTRIBUTE_UNUSED) | |
252b5132 RH |
913 | { |
914 | lang_input_statement_type *input; | |
1fa4ec6a | 915 | lang_input_statement_type *parent; |
5d3236ee | 916 | lang_input_statement_type orig_input; |
252b5132 | 917 | |
1e9cc1c2 NC |
918 | input = (lang_input_statement_type *) |
919 | xcalloc (1, sizeof (lang_input_statement_type)); | |
fb47deda | 920 | input->header.type = lang_input_statement_enum; |
607b4833 AM |
921 | input->filename = bfd_get_filename (abfd); |
922 | input->local_sym_name = bfd_get_filename (abfd); | |
252b5132 | 923 | input->the_bfd = abfd; |
252b5132 | 924 | |
5d3236ee DK |
925 | /* Save the original data for trace files/tries below, as plugins |
926 | (if enabled) may possibly alter it to point to a replacement | |
927 | BFD, but we still want to output the original BFD filename. */ | |
928 | orig_input = *input; | |
0381901e | 929 | #if BFD_SUPPORTS_PLUGINS |
bb9a951f L |
930 | /* Don't claim a fat IR object if no IR object should be claimed. */ |
931 | if (link_info.lto_plugin_active | |
932 | && (!no_more_claiming | |
933 | || bfd_get_lto_type (abfd) != lto_fat_ir_object)) | |
5d3236ee DK |
934 | { |
935 | /* We must offer this archive member to the plugins to claim. */ | |
35a1e5f3 L |
936 | plugin_maybe_claim (input); |
937 | if (input->flags.claimed) | |
5d3236ee | 938 | { |
b95a0a31 L |
939 | if (no_more_claiming) |
940 | { | |
941 | /* Don't claim new IR symbols after all IR symbols have | |
942 | been claimed. */ | |
5c87f94b | 943 | if (verbose) |
6e0c75f7 | 944 | info_msg ("%pI: no new IR symbols to claim\n", |
b95a0a31 L |
945 | &orig_input); |
946 | input->flags.claimed = 0; | |
f38a2680 | 947 | return false; |
b95a0a31 | 948 | } |
f38a2680 | 949 | input->flags.claim_archive = true; |
35a1e5f3 | 950 | *subsbfd = input->the_bfd; |
5d3236ee DK |
951 | } |
952 | } | |
0381901e | 953 | #endif /* BFD_SUPPORTS_PLUGINS */ |
5d3236ee | 954 | |
9221725d AM |
955 | if (link_info.input_bfds_tail == &input->the_bfd->link.next |
956 | || input->the_bfd->link.next != NULL) | |
957 | { | |
958 | /* We have already loaded this element, and are attempting to | |
959 | load it again. This can happen when the archive map doesn't | |
960 | match actual symbols defined by the element. */ | |
961 | free (input); | |
962 | bfd_set_error (bfd_error_malformed_archive); | |
f38a2680 | 963 | return false; |
9221725d AM |
964 | } |
965 | ||
966 | /* Set the file_chain pointer of archives to the last element loaded | |
967 | from the archive. See ldlang.c:find_rescan_insertion. */ | |
968 | parent = bfd_usrdata (abfd->my_archive); | |
969 | if (parent != NULL && !parent->flags.reload) | |
970 | parent->next = input; | |
971 | ||
252b5132 RH |
972 | ldlang_add_file (input); |
973 | ||
1579bae1 | 974 | if (config.map_file != NULL) |
252b5132 | 975 | { |
f38a2680 | 976 | static bool header_printed; |
252b5132 RH |
977 | struct bfd_link_hash_entry *h; |
978 | bfd *from; | |
979 | int len; | |
980 | ||
f38a2680 | 981 | h = bfd_link_hash_lookup (info->hash, name, false, false, true); |
aa654ee8 AM |
982 | if (h == NULL |
983 | && info->pei386_auto_import | |
08dedd66 | 984 | && startswith (name, "__imp_")) |
f38a2680 | 985 | h = bfd_link_hash_lookup (info->hash, name + 6, false, false, true); |
252b5132 RH |
986 | |
987 | if (h == NULL) | |
988 | from = NULL; | |
989 | else | |
990 | { | |
991 | switch (h->type) | |
992 | { | |
993 | default: | |
994 | from = NULL; | |
995 | break; | |
996 | ||
997 | case bfd_link_hash_defined: | |
998 | case bfd_link_hash_defweak: | |
999 | from = h->u.def.section->owner; | |
1000 | break; | |
1001 | ||
1002 | case bfd_link_hash_undefined: | |
1003 | case bfd_link_hash_undefweak: | |
1004 | from = h->u.undef.abfd; | |
1005 | break; | |
1006 | ||
1007 | case bfd_link_hash_common: | |
1008 | from = h->u.c.p->section->owner; | |
1009 | break; | |
1010 | } | |
1011 | } | |
1012 | ||
0aa7f586 | 1013 | if (!header_printed) |
252b5132 | 1014 | { |
1273da04 | 1015 | minfo (_("Archive member included to satisfy reference by file (symbol)\n\n")); |
f38a2680 | 1016 | header_printed = true; |
252b5132 RH |
1017 | } |
1018 | ||
3860d2b4 AM |
1019 | if (abfd->my_archive == NULL |
1020 | || bfd_is_thin_archive (abfd->my_archive)) | |
252b5132 RH |
1021 | { |
1022 | minfo ("%s", bfd_get_filename (abfd)); | |
1023 | len = strlen (bfd_get_filename (abfd)); | |
1024 | } | |
1025 | else | |
1026 | { | |
3860d2b4 | 1027 | minfo ("%s(%s)", bfd_get_filename (abfd->my_archive), |
252b5132 | 1028 | bfd_get_filename (abfd)); |
3860d2b4 | 1029 | len = (strlen (bfd_get_filename (abfd->my_archive)) |
252b5132 RH |
1030 | + strlen (bfd_get_filename (abfd)) |
1031 | + 2); | |
1032 | } | |
1033 | ||
1034 | if (len >= 29) | |
1035 | { | |
1036 | print_nl (); | |
1037 | len = 0; | |
1038 | } | |
6b9bd54c | 1039 | print_spaces (30 - len); |
252b5132 RH |
1040 | |
1041 | if (from != NULL) | |
871b3ab2 | 1042 | minfo ("%pB ", from); |
252b5132 | 1043 | if (h != NULL) |
c1c8c1ef | 1044 | minfo ("(%pT)\n", h->root.string); |
252b5132 RH |
1045 | else |
1046 | minfo ("(%s)\n", name); | |
1047 | } | |
1048 | ||
727a29ba AM |
1049 | if (verbose |
1050 | || trace_files > 1 | |
1051 | || (trace_files && bfd_is_thin_archive (orig_input.the_bfd->my_archive))) | |
c1c8c1ef | 1052 | info_msg ("%pI\n", &orig_input); |
f38a2680 | 1053 | return true; |
252b5132 RH |
1054 | } |
1055 | ||
1056 | /* This is called when BFD has discovered a symbol which is defined | |
1057 | multiple times. */ | |
1058 | ||
1a72702b | 1059 | static void |
24f58f47 AM |
1060 | multiple_definition (struct bfd_link_info *info, |
1061 | struct bfd_link_hash_entry *h, | |
1579bae1 AM |
1062 | bfd *nbfd, |
1063 | asection *nsec, | |
1064 | bfd_vma nval) | |
252b5132 | 1065 | { |
24f58f47 AM |
1066 | const char *name; |
1067 | bfd *obfd; | |
1068 | asection *osec; | |
1069 | bfd_vma oval; | |
1070 | ||
1071 | if (info->allow_multiple_definition) | |
1a72702b | 1072 | return; |
24f58f47 AM |
1073 | |
1074 | switch (h->type) | |
1075 | { | |
1076 | case bfd_link_hash_defined: | |
1077 | osec = h->u.def.section; | |
1078 | oval = h->u.def.value; | |
1079 | obfd = h->u.def.section->owner; | |
1080 | break; | |
1081 | case bfd_link_hash_indirect: | |
1082 | osec = bfd_ind_section_ptr; | |
1083 | oval = 0; | |
1084 | obfd = NULL; | |
1085 | break; | |
1086 | default: | |
1087 | abort (); | |
1088 | } | |
1089 | ||
1090 | /* Ignore a redefinition of an absolute symbol to the | |
1091 | same value; it's harmless. */ | |
1092 | if (h->type == bfd_link_hash_defined | |
1093 | && bfd_is_abs_section (osec) | |
1094 | && bfd_is_abs_section (nsec) | |
1095 | && nval == oval) | |
1a72702b | 1096 | return; |
24f58f47 | 1097 | |
252b5132 RH |
1098 | /* If either section has the output_section field set to |
1099 | bfd_abs_section_ptr, it means that the section is being | |
1100 | discarded, and this is not really a multiple definition at all. | |
9e2278f5 AM |
1101 | FIXME: It would be cleaner to somehow ignore symbols defined in |
1102 | sections which are being discarded. */ | |
3f0a5f17 ME |
1103 | if (!info->prohibit_multiple_definition_absolute |
1104 | && ((osec->output_section != NULL | |
1105 | && ! bfd_is_abs_section (osec) | |
1106 | && bfd_is_abs_section (osec->output_section)) | |
1107 | || (nsec->output_section != NULL | |
1108 | && !bfd_is_abs_section (nsec) | |
1109 | && bfd_is_abs_section (nsec->output_section)))) | |
1a72702b | 1110 | return; |
252b5132 | 1111 | |
24f58f47 AM |
1112 | name = h->root.string; |
1113 | if (nbfd == NULL) | |
1114 | { | |
1115 | nbfd = obfd; | |
1116 | nsec = osec; | |
1117 | nval = oval; | |
1118 | obfd = NULL; | |
1119 | } | |
70993db3 AM |
1120 | if (info->warn_multiple_definition) |
1121 | einfo (_("%P: %C: warning: multiple definition of `%pT'"), | |
1122 | nbfd, nsec, nval, name); | |
1123 | else | |
1124 | einfo (_("%X%P: %C: multiple definition of `%pT'"), | |
1125 | nbfd, nsec, nval, name); | |
1579bae1 | 1126 | if (obfd != NULL) |
df5f2391 AM |
1127 | einfo (_("; %D: first defined here"), obfd, osec, oval); |
1128 | einfo ("\n"); | |
9b14b192 | 1129 | |
13761a11 | 1130 | if (RELAXATION_ENABLED_BY_USER) |
9b14b192 | 1131 | { |
df5f2391 | 1132 | einfo (_("%P: disabling relaxation; it will not work with multiple definitions\n")); |
13761a11 | 1133 | DISABLE_RELAXATION; |
9b14b192 | 1134 | } |
252b5132 RH |
1135 | } |
1136 | ||
1137 | /* This is called when there is a definition of a common symbol, or | |
1138 | when a common symbol is found for a symbol that is already defined, | |
1139 | or when two common symbols are found. We only do something if | |
1140 | -warn-common was used. */ | |
1141 | ||
1a72702b | 1142 | static void |
1579bae1 | 1143 | multiple_common (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
24f58f47 | 1144 | struct bfd_link_hash_entry *h, |
1579bae1 AM |
1145 | bfd *nbfd, |
1146 | enum bfd_link_hash_type ntype, | |
1147 | bfd_vma nsize) | |
252b5132 | 1148 | { |
24f58f47 AM |
1149 | const char *name; |
1150 | bfd *obfd; | |
1151 | enum bfd_link_hash_type otype; | |
1152 | bfd_vma osize; | |
1153 | ||
1154 | if (!config.warn_common) | |
1a72702b | 1155 | return; |
252b5132 | 1156 | |
24f58f47 AM |
1157 | name = h->root.string; |
1158 | otype = h->type; | |
1159 | if (otype == bfd_link_hash_common) | |
1160 | { | |
1161 | obfd = h->u.c.p->section->owner; | |
1162 | osize = h->u.c.size; | |
1163 | } | |
1164 | else if (otype == bfd_link_hash_defined | |
1165 | || otype == bfd_link_hash_defweak) | |
1166 | { | |
1167 | obfd = h->u.def.section->owner; | |
1168 | osize = 0; | |
1169 | } | |
1170 | else | |
1171 | { | |
1172 | /* FIXME: It would nice if we could report the BFD which defined | |
1173 | an indirect symbol, but we don't have anywhere to store the | |
1174 | information. */ | |
1175 | obfd = NULL; | |
1176 | osize = 0; | |
1177 | } | |
1178 | ||
252b5132 RH |
1179 | if (ntype == bfd_link_hash_defined |
1180 | || ntype == bfd_link_hash_defweak | |
1181 | || ntype == bfd_link_hash_indirect) | |
1182 | { | |
1183 | ASSERT (otype == bfd_link_hash_common); | |
252b5132 | 1184 | if (obfd != NULL) |
df5f2391 AM |
1185 | einfo (_("%P: %pB: warning: definition of `%pT' overriding common" |
1186 | " from %pB\n"), | |
1187 | nbfd, name, obfd); | |
1188 | else | |
1189 | einfo (_("%P: %pB: warning: definition of `%pT' overriding common\n"), | |
1190 | nbfd, name); | |
252b5132 RH |
1191 | } |
1192 | else if (otype == bfd_link_hash_defined | |
1193 | || otype == bfd_link_hash_defweak | |
1194 | || otype == bfd_link_hash_indirect) | |
1195 | { | |
1196 | ASSERT (ntype == bfd_link_hash_common); | |
252b5132 | 1197 | if (obfd != NULL) |
df5f2391 AM |
1198 | einfo (_("%P: %pB: warning: common of `%pT' overridden by definition" |
1199 | " from %pB\n"), | |
1200 | nbfd, name, obfd); | |
1201 | else | |
1202 | einfo (_("%P: %pB: warning: common of `%pT' overridden by definition\n"), | |
1203 | nbfd, name); | |
252b5132 RH |
1204 | } |
1205 | else | |
1206 | { | |
1207 | ASSERT (otype == bfd_link_hash_common && ntype == bfd_link_hash_common); | |
1208 | if (osize > nsize) | |
1209 | { | |
252b5132 | 1210 | if (obfd != NULL) |
df5f2391 AM |
1211 | einfo (_("%P: %pB: warning: common of `%pT' overridden" |
1212 | " by larger common from %pB\n"), | |
1213 | nbfd, name, obfd); | |
1214 | else | |
1215 | einfo (_("%P: %pB: warning: common of `%pT' overridden" | |
1216 | " by larger common\n"), | |
1217 | nbfd, name); | |
252b5132 RH |
1218 | } |
1219 | else if (nsize > osize) | |
1220 | { | |
252b5132 | 1221 | if (obfd != NULL) |
df5f2391 AM |
1222 | einfo (_("%P: %pB: warning: common of `%pT' overriding" |
1223 | " smaller common from %pB\n"), | |
1224 | nbfd, name, obfd); | |
1225 | else | |
1226 | einfo (_("%P: %pB: warning: common of `%pT' overriding" | |
1227 | " smaller common\n"), | |
1228 | nbfd, name); | |
252b5132 RH |
1229 | } |
1230 | else | |
1231 | { | |
252b5132 | 1232 | if (obfd != NULL) |
df5f2391 AM |
1233 | einfo (_("%P: %pB and %pB: warning: multiple common of `%pT'\n"), |
1234 | nbfd, obfd, name); | |
1235 | else | |
1236 | einfo (_("%P: %pB: warning: multiple common of `%pT'\n"), | |
1237 | nbfd, name); | |
252b5132 RH |
1238 | } |
1239 | } | |
252b5132 RH |
1240 | } |
1241 | ||
1242 | /* This is called when BFD has discovered a set element. H is the | |
1243 | entry in the linker hash table for the set. SECTION and VALUE | |
1244 | represent a value which should be added to the set. */ | |
1245 | ||
1a72702b | 1246 | static void |
1579bae1 AM |
1247 | add_to_set (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1248 | struct bfd_link_hash_entry *h, | |
1249 | bfd_reloc_code_real_type reloc, | |
1250 | bfd *abfd, | |
1251 | asection *section, | |
1252 | bfd_vma value) | |
252b5132 RH |
1253 | { |
1254 | if (config.warn_constructors) | |
1255 | einfo (_("%P: warning: global constructor %s used\n"), | |
1256 | h->root.string); | |
1257 | ||
0aa7f586 | 1258 | if (!config.build_constructors) |
1a72702b | 1259 | return; |
252b5132 | 1260 | |
1579bae1 | 1261 | ldctor_add_set_entry (h, reloc, NULL, section, value); |
252b5132 RH |
1262 | |
1263 | if (h->type == bfd_link_hash_new) | |
1264 | { | |
1265 | h->type = bfd_link_hash_undefined; | |
1266 | h->u.undef.abfd = abfd; | |
1267 | /* We don't call bfd_link_add_undef to add this to the list of | |
1268 | undefined symbols because we are going to define it | |
1269 | ourselves. */ | |
1270 | } | |
252b5132 RH |
1271 | } |
1272 | ||
1273 | /* This is called when BFD has discovered a constructor. This is only | |
1274 | called for some object file formats--those which do not handle | |
1275 | constructors in some more clever fashion. This is similar to | |
1276 | adding an element to a set, but less general. */ | |
1277 | ||
1a72702b | 1278 | static void |
1579bae1 | 1279 | constructor_callback (struct bfd_link_info *info, |
f38a2680 | 1280 | bool constructor, |
1579bae1 AM |
1281 | const char *name, |
1282 | bfd *abfd, | |
1283 | asection *section, | |
1284 | bfd_vma value) | |
252b5132 RH |
1285 | { |
1286 | char *s; | |
1287 | struct bfd_link_hash_entry *h; | |
1288 | char set_name[1 + sizeof "__CTOR_LIST__"]; | |
1289 | ||
1290 | if (config.warn_constructors) | |
1291 | einfo (_("%P: warning: global constructor %s used\n"), name); | |
1292 | ||
0aa7f586 | 1293 | if (!config.build_constructors) |
1a72702b | 1294 | return; |
252b5132 RH |
1295 | |
1296 | /* Ensure that BFD_RELOC_CTOR exists now, so that we can give a | |
1297 | useful error message. */ | |
0e86e20e | 1298 | if (bfd_reloc_type_lookup (info->output_bfd, BFD_RELOC_CTOR) == NULL |
0e1862bb | 1299 | && (bfd_link_relocatable (info) |
252b5132 | 1300 | || bfd_reloc_type_lookup (abfd, BFD_RELOC_CTOR) == NULL)) |
df5f2391 | 1301 | einfo (_("%F%P: BFD backend error: BFD_RELOC_CTOR unsupported\n")); |
252b5132 RH |
1302 | |
1303 | s = set_name; | |
1304 | if (bfd_get_symbol_leading_char (abfd) != '\0') | |
1305 | *s++ = bfd_get_symbol_leading_char (abfd); | |
1306 | if (constructor) | |
1307 | strcpy (s, "__CTOR_LIST__"); | |
1308 | else | |
1309 | strcpy (s, "__DTOR_LIST__"); | |
1310 | ||
f38a2680 | 1311 | h = bfd_link_hash_lookup (info->hash, set_name, true, true, true); |
252b5132 | 1312 | if (h == (struct bfd_link_hash_entry *) NULL) |
df5f2391 | 1313 | einfo (_("%F%P: bfd_link_hash_lookup failed: %E\n")); |
252b5132 RH |
1314 | if (h->type == bfd_link_hash_new) |
1315 | { | |
1316 | h->type = bfd_link_hash_undefined; | |
1317 | h->u.undef.abfd = abfd; | |
1318 | /* We don't call bfd_link_add_undef to add this to the list of | |
1319 | undefined symbols because we are going to define it | |
1320 | ourselves. */ | |
1321 | } | |
1322 | ||
1323 | ldctor_add_set_entry (h, BFD_RELOC_CTOR, name, section, value); | |
252b5132 RH |
1324 | } |
1325 | ||
1326 | /* A structure used by warning_callback to pass information through | |
1327 | bfd_map_over_sections. */ | |
1328 | ||
0125cdf2 NC |
1329 | struct warning_callback_info |
1330 | { | |
f38a2680 | 1331 | bool found; |
252b5132 RH |
1332 | const char *warning; |
1333 | const char *symbol; | |
1334 | asymbol **asymbols; | |
1335 | }; | |
1336 | ||
4c6d802e L |
1337 | /* Look through the relocs to see if we can find a plausible address |
1338 | for SYMBOL in ABFD. Return TRUE if found. Otherwise return FALSE. */ | |
1339 | ||
f38a2680 | 1340 | static bool |
4c6d802e L |
1341 | symbol_warning (const char *warning, const char *symbol, bfd *abfd) |
1342 | { | |
1343 | struct warning_callback_info cinfo; | |
1344 | ||
1345 | if (!bfd_generic_link_read_symbols (abfd)) | |
df5f2391 | 1346 | einfo (_("%F%P: %pB: could not read symbols: %E\n"), abfd); |
4c6d802e | 1347 | |
f38a2680 | 1348 | cinfo.found = false; |
4c6d802e L |
1349 | cinfo.warning = warning; |
1350 | cinfo.symbol = symbol; | |
1351 | cinfo.asymbols = bfd_get_outsymbols (abfd); | |
1352 | bfd_map_over_sections (abfd, warning_find_reloc, &cinfo); | |
1353 | return cinfo.found; | |
1354 | } | |
1355 | ||
252b5132 RH |
1356 | /* This is called when there is a reference to a warning symbol. */ |
1357 | ||
1a72702b | 1358 | static void |
1579bae1 AM |
1359 | warning_callback (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1360 | const char *warning, | |
1361 | const char *symbol, | |
1362 | bfd *abfd, | |
1363 | asection *section, | |
1364 | bfd_vma address) | |
252b5132 RH |
1365 | { |
1366 | /* This is a hack to support warn_multiple_gp. FIXME: This should | |
1367 | have a cleaner interface, but what? */ | |
0aa7f586 | 1368 | if (!config.warn_multiple_gp |
252b5132 | 1369 | && strcmp (warning, "using multiple gp values") == 0) |
1a72702b | 1370 | return; |
252b5132 RH |
1371 | |
1372 | if (section != NULL) | |
df5f2391 | 1373 | einfo ("%P: %C: %s%s\n", abfd, section, address, _("warning: "), warning); |
252b5132 | 1374 | else if (abfd == NULL) |
300475fe | 1375 | einfo ("%P: %s%s\n", _("warning: "), warning); |
252b5132 | 1376 | else if (symbol == NULL) |
df5f2391 | 1377 | einfo ("%P: %pB: %s%s\n", abfd, _("warning: "), warning); |
0aa7f586 | 1378 | else if (!symbol_warning (warning, symbol, abfd)) |
252b5132 | 1379 | { |
4c6d802e L |
1380 | bfd *b; |
1381 | /* Search all input files for a reference to SYMBOL. */ | |
c72f2fb2 | 1382 | for (b = info->input_bfds; b; b = b->link.next) |
4c6d802e | 1383 | if (b != abfd && symbol_warning (warning, symbol, b)) |
1a72702b | 1384 | return; |
df5f2391 | 1385 | einfo ("%P: %pB: %s%s\n", abfd, _("warning: "), warning); |
252b5132 | 1386 | } |
252b5132 RH |
1387 | } |
1388 | ||
1389 | /* This is called by warning_callback for each section. It checks the | |
1390 | relocs of the section to see if it can find a reference to the | |
1391 | symbol which triggered the warning. If it can, it uses the reloc | |
1392 | to give an error message with a file and line number. */ | |
1393 | ||
1394 | static void | |
1579bae1 | 1395 | warning_find_reloc (bfd *abfd, asection *sec, void *iarg) |
252b5132 | 1396 | { |
1e9cc1c2 | 1397 | struct warning_callback_info *info = (struct warning_callback_info *) iarg; |
252b5132 RH |
1398 | long relsize; |
1399 | arelent **relpp; | |
1400 | long relcount; | |
1401 | arelent **p, **pend; | |
1402 | ||
1403 | if (info->found) | |
1404 | return; | |
1405 | ||
1406 | relsize = bfd_get_reloc_upper_bound (abfd, sec); | |
1407 | if (relsize < 0) | |
df5f2391 | 1408 | einfo (_("%F%P: %pB: could not read relocs: %E\n"), abfd); |
252b5132 RH |
1409 | if (relsize == 0) |
1410 | return; | |
1411 | ||
1e9cc1c2 | 1412 | relpp = (arelent **) xmalloc (relsize); |
252b5132 RH |
1413 | relcount = bfd_canonicalize_reloc (abfd, sec, relpp, info->asymbols); |
1414 | if (relcount < 0) | |
df5f2391 | 1415 | einfo (_("%F%P: %pB: could not read relocs: %E\n"), abfd); |
252b5132 RH |
1416 | |
1417 | p = relpp; | |
1418 | pend = p + relcount; | |
1419 | for (; p < pend && *p != NULL; p++) | |
1420 | { | |
1421 | arelent *q = *p; | |
1422 | ||
1423 | if (q->sym_ptr_ptr != NULL | |
1424 | && *q->sym_ptr_ptr != NULL | |
1425 | && strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), info->symbol) == 0) | |
1426 | { | |
1427 | /* We found a reloc for the symbol we are looking for. */ | |
02d2a369 | 1428 | einfo ("%P: %H: %s%s\n", abfd, sec, q->address, _("warning: "), |
300475fe | 1429 | info->warning); |
f38a2680 | 1430 | info->found = true; |
252b5132 RH |
1431 | break; |
1432 | } | |
1433 | } | |
1434 | ||
1435 | free (relpp); | |
1436 | } | |
1437 | ||
23ae20f5 NC |
1438 | #if SUPPORT_ERROR_HANDLING_SCRIPT |
1439 | char * error_handling_script = NULL; | |
1440 | #endif | |
1441 | ||
252b5132 RH |
1442 | /* This is called when an undefined symbol is found. */ |
1443 | ||
1a72702b | 1444 | static void |
0e86e20e | 1445 | undefined_symbol (struct bfd_link_info *info, |
1579bae1 AM |
1446 | const char *name, |
1447 | bfd *abfd, | |
1448 | asection *section, | |
1449 | bfd_vma address, | |
f38a2680 | 1450 | bool error) |
252b5132 RH |
1451 | { |
1452 | static char *error_name; | |
1453 | static unsigned int error_count; | |
1454 | ||
1455 | #define MAX_ERRORS_IN_A_ROW 5 | |
1456 | ||
0e86e20e | 1457 | if (info->ignore_hash != NULL |
f38a2680 | 1458 | && bfd_hash_lookup (info->ignore_hash, name, false, false) != NULL) |
1a72702b | 1459 | return; |
0e86e20e | 1460 | |
252b5132 RH |
1461 | if (config.warn_once) |
1462 | { | |
252b5132 | 1463 | /* Only warn once about a particular undefined symbol. */ |
0e86e20e | 1464 | add_ignoresym (info, name); |
252b5132 RH |
1465 | } |
1466 | ||
1467 | /* We never print more than a reasonable number of errors in a row | |
1468 | for a single symbol. */ | |
1579bae1 | 1469 | if (error_name != NULL |
252b5132 RH |
1470 | && strcmp (name, error_name) == 0) |
1471 | ++error_count; | |
1472 | else | |
1473 | { | |
1474 | error_count = 0; | |
5e2ab612 | 1475 | free (error_name); |
d1b2b2dc | 1476 | error_name = xstrdup (name); |
252b5132 RH |
1477 | } |
1478 | ||
23ae20f5 NC |
1479 | #if SUPPORT_ERROR_HANDLING_SCRIPT |
1480 | if (error_handling_script != NULL | |
1481 | && error_count < MAX_ERRORS_IN_A_ROW) | |
1482 | { | |
1483 | char * argv[4]; | |
1484 | const char * res; | |
1485 | int status, err; | |
1486 | ||
1487 | argv[0] = error_handling_script; | |
93cf38c0 | 1488 | argv[1] = "undefined-symbol"; |
23ae20f5 NC |
1489 | argv[2] = (char *) name; |
1490 | argv[3] = NULL; | |
1491 | ||
1492 | if (verbose) | |
1493 | einfo (_("%P: About to run error handling script '%s' with arguments: '%s' '%s'\n"), | |
1494 | argv[0], argv[1], argv[2]); | |
1495 | ||
1496 | res = pex_one (PEX_SEARCH, error_handling_script, argv, | |
1497 | N_("error handling script"), | |
1498 | NULL /* Send stdout to random, temp file. */, | |
1499 | NULL /* Write to stderr. */, | |
1500 | &status, &err); | |
1501 | if (res != NULL) | |
1502 | { | |
1503 | einfo (_("%P: Failed to run error handling script '%s', reason: "), | |
1504 | error_handling_script); | |
1505 | /* FIXME: We assume here that errrno == err. */ | |
1506 | perror (res); | |
1507 | } | |
1508 | /* We ignore the return status of the script and | |
1509 | carry on to issue the normal error message. */ | |
1510 | } | |
1511 | #endif /* SUPPORT_ERROR_HANDLING_SCRIPT */ | |
1512 | ||
252b5132 RH |
1513 | if (section != NULL) |
1514 | { | |
1515 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1516 | { |
0b28295d | 1517 | if (error) |
02d2a369 | 1518 | einfo (_("%X%P: %H: undefined reference to `%pT'\n"), |
0b28295d ILT |
1519 | abfd, section, address, name); |
1520 | else | |
02d2a369 | 1521 | einfo (_("%P: %H: warning: undefined reference to `%pT'\n"), |
0b28295d | 1522 | abfd, section, address, name); |
b6f29aaa | 1523 | } |
252b5132 | 1524 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1525 | { |
1526 | if (error) | |
df5f2391 | 1527 | einfo (_("%X%P: %D: more undefined references to `%pT' follow\n"), |
0b28295d ILT |
1528 | abfd, section, address, name); |
1529 | else | |
df5f2391 | 1530 | einfo (_("%P: %D: warning: more undefined references to `%pT' follow\n"), |
0b28295d ILT |
1531 | abfd, section, address, name); |
1532 | } | |
1533 | else if (error) | |
1534 | einfo ("%X"); | |
252b5132 RH |
1535 | } |
1536 | else | |
1537 | { | |
1538 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1539 | { |
0b28295d | 1540 | if (error) |
df5f2391 | 1541 | einfo (_("%X%P: %pB: undefined reference to `%pT'\n"), |
0b28295d ILT |
1542 | abfd, name); |
1543 | else | |
df5f2391 | 1544 | einfo (_("%P: %pB: warning: undefined reference to `%pT'\n"), |
0b28295d | 1545 | abfd, name); |
b6f29aaa | 1546 | } |
252b5132 | 1547 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1548 | { |
1549 | if (error) | |
df5f2391 | 1550 | einfo (_("%X%P: %pB: more undefined references to `%pT' follow\n"), |
0b28295d ILT |
1551 | abfd, name); |
1552 | else | |
df5f2391 | 1553 | einfo (_("%P: %pB: warning: more undefined references to `%pT' follow\n"), |
0b28295d ILT |
1554 | abfd, name); |
1555 | } | |
1556 | else if (error) | |
1557 | einfo ("%X"); | |
252b5132 | 1558 | } |
252b5132 RH |
1559 | } |
1560 | ||
8aae64e6 AO |
1561 | /* Counter to limit the number of relocation overflow error messages |
1562 | to print. Errors are printed as it is decremented. When it's | |
1563 | called and the counter is zero, a final message is printed | |
1564 | indicating more relocations were omitted. When it gets to -1, no | |
1565 | such errors are printed. If it's initially set to a value less | |
1566 | than -1, all such errors will be printed (--verbose does this). */ | |
1567 | ||
1568 | int overflow_cutoff_limit = 10; | |
1569 | ||
252b5132 RH |
1570 | /* This is called when a reloc overflows. */ |
1571 | ||
1a72702b | 1572 | static void |
0e86e20e | 1573 | reloc_overflow (struct bfd_link_info *info, |
dfeffb9f | 1574 | struct bfd_link_hash_entry *entry, |
1579bae1 AM |
1575 | const char *name, |
1576 | const char *reloc_name, | |
1577 | bfd_vma addend, | |
1578 | bfd *abfd, | |
1579 | asection *section, | |
1580 | bfd_vma address) | |
252b5132 | 1581 | { |
8aae64e6 | 1582 | if (overflow_cutoff_limit == -1) |
1a72702b | 1583 | return; |
8aae64e6 | 1584 | |
a5990ada | 1585 | einfo ("%X%H:", abfd, section, address); |
8aae64e6 AO |
1586 | |
1587 | if (overflow_cutoff_limit >= 0 | |
1588 | && overflow_cutoff_limit-- == 0) | |
1589 | { | |
1590 | einfo (_(" additional relocation overflows omitted from the output\n")); | |
1a72702b | 1591 | return; |
8aae64e6 AO |
1592 | } |
1593 | ||
dfeffb9f L |
1594 | if (entry) |
1595 | { | |
1596 | while (entry->type == bfd_link_hash_indirect | |
1597 | || entry->type == bfd_link_hash_warning) | |
1598 | entry = entry->u.i.link; | |
1599 | switch (entry->type) | |
1600 | { | |
1601 | case bfd_link_hash_undefined: | |
1602 | case bfd_link_hash_undefweak: | |
0aa7f586 | 1603 | einfo (_(" relocation truncated to fit: " |
c1c8c1ef | 1604 | "%s against undefined symbol `%pT'"), |
dfeffb9f L |
1605 | reloc_name, entry->root.string); |
1606 | break; | |
1607 | case bfd_link_hash_defined: | |
1608 | case bfd_link_hash_defweak: | |
0aa7f586 | 1609 | einfo (_(" relocation truncated to fit: " |
c1c8c1ef | 1610 | "%s against symbol `%pT' defined in %pA section in %pB"), |
dfeffb9f | 1611 | reloc_name, entry->root.string, |
a6e1b90f L |
1612 | entry->u.def.section, |
1613 | entry->u.def.section == bfd_abs_section_ptr | |
0e86e20e | 1614 | ? info->output_bfd : entry->u.def.section->owner); |
dfeffb9f L |
1615 | break; |
1616 | default: | |
1617 | abort (); | |
1618 | break; | |
1619 | } | |
1620 | } | |
1621 | else | |
c1c8c1ef | 1622 | einfo (_(" relocation truncated to fit: %s against `%pT'"), |
dfeffb9f | 1623 | reloc_name, name); |
252b5132 RH |
1624 | if (addend != 0) |
1625 | einfo ("+%v", addend); | |
1626 | einfo ("\n"); | |
252b5132 RH |
1627 | } |
1628 | ||
1629 | /* This is called when a dangerous relocation is made. */ | |
1630 | ||
1a72702b | 1631 | static void |
1579bae1 AM |
1632 | reloc_dangerous (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1633 | const char *message, | |
1634 | bfd *abfd, | |
1635 | asection *section, | |
1636 | bfd_vma address) | |
252b5132 | 1637 | { |
a5990ada | 1638 | einfo (_("%X%H: dangerous relocation: %s\n"), |
e1fffbe6 | 1639 | abfd, section, address, message); |
252b5132 RH |
1640 | } |
1641 | ||
1642 | /* This is called when a reloc is being generated attached to a symbol | |
1643 | that is not being output. */ | |
1644 | ||
1a72702b | 1645 | static void |
1579bae1 AM |
1646 | unattached_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1647 | const char *name, | |
1648 | bfd *abfd, | |
1649 | asection *section, | |
1650 | bfd_vma address) | |
252b5132 | 1651 | { |
a5990ada | 1652 | einfo (_("%X%H: reloc refers to symbol `%pT' which is not being output\n"), |
e1fffbe6 | 1653 | abfd, section, address, name); |
252b5132 RH |
1654 | } |
1655 | ||
1656 | /* This is called if link_info.notice_all is set, or when a symbol in | |
1657 | link_info.notice_hash is found. Symbols are put in notice_hash | |
5d3236ee DK |
1658 | using the -y option, while notice_all is set if the --cref option |
1659 | has been supplied, or if there are any NOCROSSREFS sections in the | |
1660 | linker script; and if plugins are active, since they need to monitor | |
1661 | all references from non-IR files. */ | |
252b5132 | 1662 | |
f38a2680 | 1663 | static bool |
1579bae1 | 1664 | notice (struct bfd_link_info *info, |
35ed3f94 | 1665 | struct bfd_link_hash_entry *h, |
46135103 | 1666 | struct bfd_link_hash_entry *inh ATTRIBUTE_UNUSED, |
1579bae1 AM |
1667 | bfd *abfd, |
1668 | asection *section, | |
16d96b5b | 1669 | bfd_vma value, |
46135103 | 1670 | flagword flags ATTRIBUTE_UNUSED) |
252b5132 | 1671 | { |
35ed3f94 AM |
1672 | const char *name; |
1673 | ||
1674 | if (h == NULL) | |
5061a885 AM |
1675 | { |
1676 | if (command_line.cref || nocrossref_list != NULL) | |
1e9cc1c2 | 1677 | return handle_asneeded_cref (abfd, (enum notice_asneeded_action) value); |
f38a2680 | 1678 | return true; |
5061a885 AM |
1679 | } |
1680 | ||
35ed3f94 | 1681 | name = h->root.string; |
5d3236ee | 1682 | if (info->notice_hash != NULL |
f38a2680 | 1683 | && bfd_hash_lookup (info->notice_hash, name, false, false) != NULL) |
252b5132 RH |
1684 | { |
1685 | if (bfd_is_und_section (section)) | |
df5f2391 | 1686 | einfo (_("%P: %pB: reference to %s\n"), abfd, name); |
252b5132 | 1687 | else |
df5f2391 | 1688 | einfo (_("%P: %pB: definition of %s\n"), abfd, name); |
252b5132 RH |
1689 | } |
1690 | ||
1691 | if (command_line.cref || nocrossref_list != NULL) | |
1692 | add_cref (name, abfd, section, value); | |
1693 | ||
f38a2680 | 1694 | return true; |
252b5132 | 1695 | } |