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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 RH |
92 | |
93 | args_type command_line; | |
94 | ||
95 | ld_config_type config; | |
96 | ||
bcaa7b3e L |
97 | sort_type sort_section; |
98 | ||
e2243057 RS |
99 | static const char *get_sysroot |
100 | (int, char **); | |
0125cdf2 | 101 | static char *get_emulation |
1579bae1 | 102 | (int, char **); |
f38a2680 | 103 | static bool add_archive_element |
5d3236ee | 104 | (struct bfd_link_info *, bfd *, const char *, bfd **); |
1a72702b | 105 | static void multiple_definition |
24f58f47 | 106 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
1579bae1 | 107 | bfd *, asection *, bfd_vma); |
1a72702b | 108 | static void multiple_common |
24f58f47 AM |
109 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
110 | bfd *, enum bfd_link_hash_type, bfd_vma); | |
1a72702b | 111 | static void add_to_set |
1579bae1 AM |
112 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
113 | bfd_reloc_code_real_type, bfd *, asection *, bfd_vma); | |
1a72702b | 114 | static void constructor_callback |
f38a2680 | 115 | (struct bfd_link_info *, bool, const char *, bfd *, |
1579bae1 | 116 | asection *, bfd_vma); |
1a72702b | 117 | static void warning_callback |
1579bae1 AM |
118 | (struct bfd_link_info *, const char *, const char *, bfd *, |
119 | asection *, bfd_vma); | |
0125cdf2 | 120 | static void warning_find_reloc |
1579bae1 | 121 | (bfd *, asection *, void *); |
1a72702b | 122 | static void undefined_symbol |
1579bae1 | 123 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma, |
f38a2680 | 124 | bool); |
1a72702b | 125 | static void reloc_overflow |
dfeffb9f L |
126 | (struct bfd_link_info *, struct bfd_link_hash_entry *, const char *, |
127 | const char *, bfd_vma, bfd *, asection *, bfd_vma); | |
1a72702b | 128 | static void reloc_dangerous |
1579bae1 | 129 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
1a72702b | 130 | static void unattached_reloc |
1579bae1 | 131 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
f38a2680 | 132 | static bool notice |
35ed3f94 | 133 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
46135103 | 134 | struct bfd_link_hash_entry *, bfd *, asection *, bfd_vma, flagword); |
0125cdf2 NC |
135 | |
136 | static struct bfd_link_callbacks link_callbacks = | |
137 | { | |
252b5132 RH |
138 | add_archive_element, |
139 | multiple_definition, | |
140 | multiple_common, | |
141 | add_to_set, | |
142 | constructor_callback, | |
143 | warning_callback, | |
144 | undefined_symbol, | |
145 | reloc_overflow, | |
146 | reloc_dangerous, | |
147 | unattached_reloc, | |
e1fffbe6 | 148 | notice, |
2889e75b | 149 | einfo, |
49fa1e15 AM |
150 | info_msg, |
151 | minfo, | |
1ff6de03 | 152 | ldlang_override_segment_assignment, |
3d16b64e NA |
153 | ldlang_ctf_acquire_strings, |
154 | NULL, | |
155 | ldlang_ctf_new_dynsym, | |
1ff6de03 | 156 | ldlang_write_ctf_late |
252b5132 RH |
157 | }; |
158 | ||
3b66a141 | 159 | static bfd_assert_handler_type default_bfd_assert_handler; |
4519d071 | 160 | static bfd_error_handler_type default_bfd_error_handler; |
3b66a141 | 161 | |
252b5132 RH |
162 | struct bfd_link_info link_info; |
163 | \f | |
f37b21b4 RM |
164 | struct dependency_file |
165 | { | |
166 | struct dependency_file *next; | |
167 | char *name; | |
168 | }; | |
169 | ||
170 | static struct dependency_file *dependency_files, *dependency_files_tail; | |
171 | ||
172 | void | |
173 | track_dependency_files (const char *filename) | |
174 | { | |
175 | struct dependency_file *dep | |
176 | = (struct dependency_file *) xmalloc (sizeof (*dep)); | |
177 | dep->name = xstrdup (filename); | |
178 | dep->next = NULL; | |
179 | if (dependency_files == NULL) | |
180 | dependency_files = dep; | |
181 | else | |
182 | dependency_files_tail->next = dep; | |
183 | dependency_files_tail = dep; | |
184 | } | |
185 | ||
186 | static void | |
187 | write_dependency_file (void) | |
188 | { | |
189 | FILE *out; | |
190 | struct dependency_file *dep; | |
191 | ||
192 | out = fopen (config.dependency_file, FOPEN_WT); | |
193 | if (out == NULL) | |
194 | { | |
195 | einfo (_("%F%P: cannot open dependency file %s: %E\n"), | |
196 | config.dependency_file); | |
197 | } | |
198 | ||
199 | fprintf (out, "%s:", output_filename); | |
200 | ||
201 | for (dep = dependency_files; dep != NULL; dep = dep->next) | |
202 | fprintf (out, " \\\n %s", dep->name); | |
203 | ||
204 | fprintf (out, "\n"); | |
205 | for (dep = dependency_files; dep != NULL; dep = dep->next) | |
206 | fprintf (out, "\n%s:\n", dep->name); | |
207 | ||
208 | fclose (out); | |
209 | } | |
210 | \f | |
252b5132 | 211 | static void |
498cd2a0 | 212 | ld_cleanup (void) |
252b5132 | 213 | { |
1f5e6267 AM |
214 | bfd *ibfd, *inext; |
215 | if (link_info.output_bfd) | |
216 | bfd_close_all_done (link_info.output_bfd); | |
217 | for (ibfd = link_info.input_bfds; ibfd; ibfd = inext) | |
218 | { | |
219 | inext = ibfd->link.next; | |
220 | bfd_close_all_done (ibfd); | |
221 | } | |
0381901e | 222 | #if BFD_SUPPORTS_PLUGINS |
498cd2a0 AM |
223 | plugin_call_cleanup (); |
224 | #endif | |
225 | if (output_filename && delete_output_file_on_failure) | |
226 | unlink_if_ordinary (output_filename); | |
252b5132 RH |
227 | } |
228 | ||
4519d071 | 229 | /* Hook to notice BFD assertions. */ |
3b66a141 HPN |
230 | |
231 | static void | |
232 | ld_bfd_assert_handler (const char *fmt, const char *bfdver, | |
233 | const char *file, int line) | |
234 | { | |
f38a2680 | 235 | config.make_executable = false; |
4519d071 AM |
236 | (*default_bfd_assert_handler) (fmt, bfdver, file, line); |
237 | } | |
238 | ||
239 | /* Hook the bfd error/warning handler for --fatal-warnings. */ | |
240 | ||
241 | static void | |
242 | ld_bfd_error_handler (const char *fmt, va_list ap) | |
243 | { | |
244 | if (config.fatal_warnings) | |
f38a2680 | 245 | config.make_executable = false; |
4519d071 | 246 | (*default_bfd_error_handler) (fmt, ap); |
3b66a141 HPN |
247 | } |
248 | ||
252b5132 | 249 | int |
1579bae1 | 250 | main (int argc, char **argv) |
252b5132 RH |
251 | { |
252 | char *emulation; | |
253 | long start_time = get_run_time (); | |
254 | ||
c774eab1 | 255 | #ifdef HAVE_LC_MESSAGES |
252b5132 | 256 | setlocale (LC_MESSAGES, ""); |
3882b010 | 257 | #endif |
3882b010 | 258 | setlocale (LC_CTYPE, ""); |
252b5132 RH |
259 | bindtextdomain (PACKAGE, LOCALEDIR); |
260 | textdomain (PACKAGE); | |
261 | ||
262 | program_name = argv[0]; | |
263 | xmalloc_set_program_name (program_name); | |
264 | ||
869b9d07 MM |
265 | expandargv (&argc, &argv); |
266 | ||
bf2dd8d7 AM |
267 | if (bfd_init () != BFD_INIT_MAGIC) |
268 | einfo (_("%F%P: fatal error: libbfd ABI mismatch\n")); | |
252b5132 RH |
269 | |
270 | bfd_set_error_program_name (program_name); | |
271 | ||
3b66a141 HPN |
272 | /* We want to notice and fail on those nasty BFD assertions which are |
273 | likely to signal incorrect output being generated but otherwise may | |
274 | leave no trace. */ | |
275 | default_bfd_assert_handler = bfd_set_assert_handler (ld_bfd_assert_handler); | |
276 | ||
4519d071 AM |
277 | /* Also hook the bfd error/warning handler for --fatal-warnings. */ |
278 | default_bfd_error_handler = bfd_set_error_handler (ld_bfd_error_handler); | |
279 | ||
498cd2a0 | 280 | xatexit (ld_cleanup); |
252b5132 | 281 | |
e2243057 RS |
282 | /* Set up the sysroot directory. */ |
283 | ld_sysroot = get_sysroot (argc, argv); | |
284 | if (*ld_sysroot) | |
3074964f | 285 | ld_canon_sysroot = lrealpath (ld_sysroot); |
3fe38064 | 286 | if (ld_canon_sysroot) |
889be5db DR |
287 | { |
288 | ld_canon_sysroot_len = strlen (ld_canon_sysroot); | |
289 | ||
290 | /* is_sysrooted_pathname() relies on no trailing dirsep. */ | |
291 | if (ld_canon_sysroot_len > 0 | |
292 | && IS_DIR_SEPARATOR (ld_canon_sysroot [ld_canon_sysroot_len - 1])) | |
f37b21b4 | 293 | ld_canon_sysroot [--ld_canon_sysroot_len] = '\0'; |
889be5db | 294 | } |
3fe38064 NC |
295 | else |
296 | ld_canon_sysroot_len = -1; | |
297 | ||
252b5132 RH |
298 | /* Set the default BFD target based on the configured target. Doing |
299 | this permits the linker to be configured for a particular target, | |
300 | and linked against a shared BFD library which was configured for | |
301 | a different target. The macro TARGET is defined by Makefile. */ | |
0aa7f586 | 302 | if (!bfd_set_default_target (TARGET)) |
252b5132 RH |
303 | { |
304 | einfo (_("%X%P: can't set BFD default target to `%s': %E\n"), TARGET); | |
305 | xexit (1); | |
306 | } | |
307 | ||
b47c4208 AM |
308 | #if YYDEBUG |
309 | { | |
310 | extern int yydebug; | |
311 | yydebug = 1; | |
312 | } | |
313 | #endif | |
314 | ||
f38a2680 | 315 | config.build_constructors = true; |
c76308d2 | 316 | config.rpath_separator = ':'; |
a854a4a7 AM |
317 | config.split_by_reloc = (unsigned) -1; |
318 | config.split_by_file = (bfd_size_type) -1; | |
f38a2680 AM |
319 | config.make_executable = true; |
320 | config.magic_demand_paged = true; | |
321 | config.text_read_only = true; | |
322 | config.print_map_discarded = true; | |
4f9d22a0 | 323 | link_info.disable_target_specific_optimizations = -1; |
3b95049e | 324 | |
f38a2680 AM |
325 | command_line.warn_mismatch = true; |
326 | command_line.warn_search_mismatch = true; | |
02b0b1aa | 327 | command_line.check_section_addresses = -1; |
bcaa7b3e | 328 | |
252b5132 RH |
329 | /* We initialize DEMANGLING based on the environment variable |
330 | COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the | |
331 | output of the linker, unless COLLECT_NO_DEMANGLE is set in the | |
332 | environment. Acting the same way here lets us provide the same | |
333 | interface by default. */ | |
334 | demangling = getenv ("COLLECT_NO_DEMANGLE") == NULL; | |
335 | ||
f38a2680 AM |
336 | link_info.allow_undefined_version = true; |
337 | link_info.keep_memory = true; | |
a8dde0a2 | 338 | link_info.max_cache_size = (bfd_size_type) -1; |
f38a2680 AM |
339 | link_info.combreloc = true; |
340 | link_info.strip_discarded = true; | |
341 | link_info.prohibit_multiple_definition_absolute = false; | |
b32632c4 | 342 | link_info.textrel_check = DEFAULT_LD_TEXTREL_CHECK; |
2760f24c RG |
343 | link_info.emit_hash = DEFAULT_EMIT_SYSV_HASH; |
344 | link_info.emit_gnu_hash = DEFAULT_EMIT_GNU_HASH; | |
a9a4c53e AM |
345 | link_info.callbacks = &link_callbacks; |
346 | link_info.input_bfds_tail = &link_info.input_bfds; | |
3dbf70a2 MM |
347 | /* SVR4 linkers seem to set DT_INIT and DT_FINI based on magic _init |
348 | and _fini symbols. We are compatible. */ | |
349 | link_info.init_function = "_init"; | |
350 | link_info.fini_function = "_fini"; | |
a9a4c53e | 351 | link_info.relax_pass = 1; |
889c2a67 | 352 | link_info.extern_protected_data = -1; |
aec6b87e | 353 | link_info.dynamic_undefined_weak = -1; |
6f365fda | 354 | link_info.indirect_extern_access = -1; |
e0076ab3 | 355 | link_info.pei386_auto_import = -1; |
db6751f2 | 356 | link_info.spare_dynamic_tags = 5; |
967928e9 | 357 | link_info.path_separator = ':'; |
6c3bc0f8 | 358 | #ifdef DEFAULT_FLAG_COMPRESS_DEBUG |
c3620d6d | 359 | config.compress_debug = DEFAULT_COMPRESSED_DEBUG_ALGORITHM; |
6c3bc0f8 | 360 | #endif |
6734f10a | 361 | #ifdef DEFAULT_NEW_DTAGS |
91001320 | 362 | link_info.new_dtags = DEFAULT_NEW_DTAGS; |
6734f10a | 363 | #endif |
f38a2680 | 364 | link_info.start_stop_gc = false; |
cae64165 | 365 | link_info.start_stop_visibility = STV_PROTECTED; |
24718e3b | 366 | |
252b5132 | 367 | ldfile_add_arch (""); |
252b5132 RH |
368 | emulation = get_emulation (argc, argv); |
369 | ldemul_choose_mode (emulation); | |
742aeb63 | 370 | default_target = ldemul_choose_target (argc, argv); |
252b5132 | 371 | lang_init (); |
18d6a79d | 372 | ldexp_init (); |
252b5132 | 373 | ldemul_before_parse (); |
f38a2680 | 374 | lang_has_input_file = false; |
252b5132 RH |
375 | parse_args (argc, argv); |
376 | ||
2d643429 NC |
377 | if (config.hash_table_size != 0) |
378 | bfd_hash_set_default_size (config.hash_table_size); | |
379 | ||
0381901e | 380 | #if BFD_SUPPORTS_PLUGINS |
9bbc1a67 | 381 | /* Now all the plugin arguments have been gathered, we can load them. */ |
d82184d7 | 382 | plugin_load_plugins (); |
0381901e | 383 | #endif /* BFD_SUPPORTS_PLUGINS */ |
36af4a4e | 384 | |
9bbc1a67 | 385 | ldemul_set_symbols (); |
252b5132 | 386 | |
14be8564 L |
387 | /* If we have not already opened and parsed a linker script, |
388 | try the default script from command line first. */ | |
389 | if (saved_script_handle == NULL | |
390 | && command_line.default_script != NULL) | |
391 | { | |
6ec6968b | 392 | ldfile_open_script_file (command_line.default_script); |
14be8564 L |
393 | parser_input = input_script; |
394 | yyparse (); | |
395 | } | |
396 | ||
b9a8de1e NC |
397 | /* If we have not already opened and parsed a linker script |
398 | read the emulation's appropriate default script. */ | |
b90e1c6f | 399 | if (saved_script_handle == NULL) |
252b5132 | 400 | { |
252b5132 | 401 | int isfile; |
b7a26f91 | 402 | char *s = ldemul_get_script (&isfile); |
252b5132 RH |
403 | |
404 | if (isfile) | |
7d24f02c | 405 | ldfile_open_default_command_file (s); |
252b5132 | 406 | else |
b7a26f91 | 407 | { |
252b5132 | 408 | lex_string = s; |
dab69f68 | 409 | lex_redirect (s, _("built in linker script"), 1); |
252b5132 RH |
410 | } |
411 | parser_input = input_script; | |
412 | yyparse (); | |
413 | lex_string = NULL; | |
414 | } | |
415 | ||
cd6f1cf3 | 416 | if (verbose) |
b9a8de1e | 417 | { |
9cb61eab AM |
418 | if (saved_script_handle) |
419 | info_msg (_("using external linker script:")); | |
420 | else | |
421 | info_msg (_("using internal linker script:")); | |
422 | info_msg ("\n==================================================\n"); | |
b9a8de1e NC |
423 | |
424 | if (saved_script_handle) | |
425 | { | |
74699268 | 426 | static const int ld_bufsz = 8193; |
b9a8de1e | 427 | size_t n; |
1e9cc1c2 | 428 | char *buf = (char *) xmalloc (ld_bufsz); |
b9a8de1e NC |
429 | |
430 | rewind (saved_script_handle); | |
74699268 | 431 | while ((n = fread (buf, 1, ld_bufsz - 1, saved_script_handle)) > 0) |
b9a8de1e | 432 | { |
b7a26f91 | 433 | buf[n] = 0; |
f5ac6ab3 | 434 | info_msg ("%s", buf); |
b9a8de1e NC |
435 | } |
436 | rewind (saved_script_handle); | |
437 | free (buf); | |
438 | } | |
439 | else | |
440 | { | |
441 | int isfile; | |
442 | ||
b7a26f91 | 443 | info_msg (ldemul_get_script (&isfile)); |
b9a8de1e | 444 | } |
b7a26f91 | 445 | |
b9a8de1e NC |
446 | info_msg ("\n==================================================\n"); |
447 | } | |
448 | ||
7bdf4127 AB |
449 | if (command_line.force_group_allocation |
450 | || !bfd_link_relocatable (&link_info)) | |
f38a2680 | 451 | link_info.resolve_section_groups = true; |
7bdf4127 | 452 | else |
f38a2680 | 453 | link_info.resolve_section_groups = false; |
7bdf4127 | 454 | |
30824704 RM |
455 | if (command_line.print_output_format) |
456 | info_msg ("%s\n", lang_get_output_target ()); | |
457 | ||
252b5132 RH |
458 | lang_final (); |
459 | ||
61e2488c JT |
460 | /* If the only command line argument has been -v or --version or --verbose |
461 | then ignore any input files provided by linker scripts and exit now. | |
462 | We do not want to create an output file when the linker is just invoked | |
463 | to provide version information. */ | |
464 | if (argc == 2 && version_printed) | |
465 | xexit (0); | |
466 | ||
a4819f54 | 467 | if (link_info.inhibit_common_definition && !bfd_link_dll (&link_info)) |
df5f2391 | 468 | einfo (_("%F%P: --no-define-common may not be used without -shared\n")); |
a4819f54 | 469 | |
b34976b6 | 470 | if (!lang_has_input_file) |
252b5132 | 471 | { |
30824704 | 472 | if (version_printed || command_line.print_output_format) |
252b5132 | 473 | xexit (0); |
df5f2391 | 474 | einfo (_("%F%P: no input files\n")); |
252b5132 RH |
475 | } |
476 | ||
5c87f94b | 477 | if (verbose) |
0125cdf2 | 478 | info_msg (_("%P: mode %s\n"), emulation); |
252b5132 RH |
479 | |
480 | ldemul_after_parse (); | |
481 | ||
252b5132 RH |
482 | if (config.map_filename) |
483 | { | |
484 | if (strcmp (config.map_filename, "-") == 0) | |
485 | { | |
486 | config.map_file = stdout; | |
487 | } | |
488 | else | |
489 | { | |
490 | config.map_file = fopen (config.map_filename, FOPEN_WT); | |
491 | if (config.map_file == (FILE *) NULL) | |
492 | { | |
493 | bfd_set_error (bfd_error_system_call); | |
df5f2391 | 494 | einfo (_("%F%P: cannot open map file %s: %E\n"), |
252b5132 RH |
495 | config.map_filename); |
496 | } | |
497 | } | |
f38a2680 | 498 | link_info.has_map_file = true; |
252b5132 RH |
499 | } |
500 | ||
252b5132 RH |
501 | lang_process (); |
502 | ||
503 | /* Print error messages for any missing symbols, for any warning | |
6d5e62f8 | 504 | symbols, and possibly multiple definitions. */ |
0e1862bb | 505 | if (bfd_link_relocatable (&link_info)) |
f13a99db | 506 | link_info.output_bfd->flags &= ~EXEC_P; |
252b5132 | 507 | else |
f13a99db | 508 | link_info.output_bfd->flags |= EXEC_P; |
252b5132 | 509 | |
c3620d6d AM |
510 | flagword flags = 0; |
511 | switch (config.compress_debug) | |
0ce398f1 | 512 | { |
c3620d6d AM |
513 | case COMPRESS_DEBUG_GNU_ZLIB: |
514 | flags = BFD_COMPRESS; | |
515 | break; | |
516 | case COMPRESS_DEBUG_GABI_ZLIB: | |
517 | flags = BFD_COMPRESS | BFD_COMPRESS_GABI; | |
518 | break; | |
519 | case COMPRESS_DEBUG_ZSTD: | |
520 | flags = BFD_COMPRESS | BFD_COMPRESS_GABI | BFD_COMPRESS_ZSTD; | |
521 | break; | |
522 | default: | |
523 | break; | |
0ce398f1 | 524 | } |
c3620d6d AM |
525 | link_info.output_bfd->flags |
526 | |= flags & bfd_applicable_file_flags (link_info.output_bfd); | |
0ce398f1 | 527 | |
252b5132 RH |
528 | ldwrite (); |
529 | ||
530 | if (config.map_file != NULL) | |
531 | lang_map (); | |
532 | if (command_line.cref) | |
533 | output_cref (config.map_file != NULL ? config.map_file : stdout); | |
534 | if (nocrossref_list != NULL) | |
535 | check_nocrossrefs (); | |
3604cb1f TG |
536 | if (command_line.print_memory_usage) |
537 | lang_print_memory_usage (); | |
edf84efc NC |
538 | #if 0 |
539 | { | |
0aa7f586 | 540 | struct bfd_link_hash_entry *h; |
252b5132 | 541 | |
edf84efc NC |
542 | h = bfd_link_hash_lookup (link_info.hash, "__image_base__", 0,0,1); |
543 | fprintf (stderr, "lookup = %p val %lx\n", h, h ? h->u.def.value : 1); | |
544 | } | |
545 | #endif | |
18d6a79d | 546 | ldexp_finish (); |
750877ba L |
547 | lang_finish (); |
548 | ||
f37b21b4 RM |
549 | if (config.dependency_file != NULL) |
550 | write_dependency_file (); | |
551 | ||
1049f94e | 552 | /* Even if we're producing relocatable output, some non-fatal errors should |
252b5132 | 553 | be reported in the exit status. (What non-fatal errors, if any, do we |
1049f94e | 554 | want to ignore for relocatable output?) */ |
b34976b6 | 555 | if (!config.make_executable && !force_make_executable) |
252b5132 | 556 | { |
5c87f94b | 557 | if (verbose) |
0125cdf2 NC |
558 | einfo (_("%P: link errors found, deleting executable `%s'\n"), |
559 | output_filename); | |
252b5132 | 560 | |
4309cbf2 | 561 | /* The file will be removed by ld_cleanup. */ |
252b5132 RH |
562 | xexit (1); |
563 | } | |
564 | else | |
565 | { | |
1f5e6267 AM |
566 | bfd *obfd = link_info.output_bfd; |
567 | link_info.output_bfd = NULL; | |
568 | if (!bfd_close (obfd)) | |
e122316b | 569 | einfo (_("%F%P: %s: final close failed: %E\n"), output_filename); |
252b5132 RH |
570 | |
571 | /* If the --force-exe-suffix is enabled, and we're making an | |
6d5e62f8 KH |
572 | executable file and it doesn't end in .exe, copy it to one |
573 | which does. */ | |
0e1862bb L |
574 | if (!bfd_link_relocatable (&link_info) |
575 | && command_line.force_exe_suffix) | |
252b5132 RH |
576 | { |
577 | int len = strlen (output_filename); | |
0125cdf2 | 578 | |
6d5e62f8 | 579 | if (len < 4 |
252b5132 RH |
580 | || (strcasecmp (output_filename + len - 4, ".exe") != 0 |
581 | && strcasecmp (output_filename + len - 4, ".dll") != 0)) | |
582 | { | |
583 | FILE *src; | |
584 | FILE *dst; | |
585 | const int bsize = 4096; | |
1e9cc1c2 | 586 | char *buf = (char *) xmalloc (bsize); |
252b5132 | 587 | int l; |
1e9cc1c2 | 588 | char *dst_name = (char *) xmalloc (len + 5); |
0125cdf2 | 589 | |
252b5132 RH |
590 | strcpy (dst_name, output_filename); |
591 | strcat (dst_name, ".exe"); | |
592 | src = fopen (output_filename, FOPEN_RB); | |
593 | dst = fopen (dst_name, FOPEN_WB); | |
594 | ||
595 | if (!src) | |
df5f2391 | 596 | einfo (_("%F%P: unable to open for source of copy `%s'\n"), |
1579bae1 | 597 | output_filename); |
252b5132 | 598 | if (!dst) |
df5f2391 | 599 | einfo (_("%F%P: unable to open for destination of copy `%s'\n"), |
1579bae1 | 600 | dst_name); |
252b5132 RH |
601 | while ((l = fread (buf, 1, bsize, src)) > 0) |
602 | { | |
603 | int done = fwrite (buf, 1, l, dst); | |
0125cdf2 | 604 | |
252b5132 | 605 | if (done != l) |
df5f2391 | 606 | einfo (_("%P: error writing file `%s'\n"), dst_name); |
252b5132 | 607 | } |
0125cdf2 | 608 | |
252b5132 RH |
609 | fclose (src); |
610 | if (fclose (dst) == EOF) | |
df5f2391 | 611 | einfo (_("%P: error closing file `%s'\n"), dst_name); |
252b5132 RH |
612 | free (dst_name); |
613 | free (buf); | |
614 | } | |
615 | } | |
616 | } | |
617 | ||
252b5132 RH |
618 | if (config.stats) |
619 | { | |
252b5132 RH |
620 | long run_time = get_run_time () - start_time; |
621 | ||
e922bcab | 622 | fflush (stdout); |
252b5132 RH |
623 | fprintf (stderr, _("%s: total time in link: %ld.%06ld\n"), |
624 | program_name, run_time / 1000000, run_time % 1000000); | |
e922bcab | 625 | fflush (stderr); |
252b5132 RH |
626 | } |
627 | ||
1f5e6267 | 628 | /* Prevent ld_cleanup from deleting the output file. */ |
252b5132 RH |
629 | output_filename = NULL; |
630 | ||
631 | xexit (0); | |
632 | return 0; | |
633 | } | |
634 | ||
e2243057 RS |
635 | /* If the configured sysroot is relocatable, try relocating it based on |
636 | default prefix FROM. Return the relocated directory if it exists, | |
637 | otherwise return null. */ | |
638 | ||
639 | static char * | |
640 | get_relative_sysroot (const char *from ATTRIBUTE_UNUSED) | |
641 | { | |
642 | #ifdef TARGET_SYSTEM_ROOT_RELOCATABLE | |
643 | char *path; | |
644 | struct stat s; | |
645 | ||
646 | path = make_relative_prefix (program_name, from, TARGET_SYSTEM_ROOT); | |
647 | if (path) | |
648 | { | |
649 | if (stat (path, &s) == 0 && S_ISDIR (s.st_mode)) | |
650 | return path; | |
651 | free (path); | |
652 | } | |
653 | #endif | |
654 | return 0; | |
655 | } | |
656 | ||
657 | /* Return the sysroot directory. Return "" if no sysroot is being used. */ | |
658 | ||
659 | static const char * | |
660 | get_sysroot (int argc, char **argv) | |
661 | { | |
662 | int i; | |
55d5520a | 663 | const char *path = NULL; |
e2243057 RS |
664 | |
665 | for (i = 1; i < argc; i++) | |
08dedd66 | 666 | if (startswith (argv[i], "--sysroot=")) |
55d5520a | 667 | path = argv[i] + strlen ("--sysroot="); |
e2243057 | 668 | |
55d5520a AM |
669 | if (!path) |
670 | path = get_relative_sysroot (BINDIR); | |
e2243057 | 671 | |
55d5520a AM |
672 | if (!path) |
673 | path = get_relative_sysroot (TOOLBINDIR); | |
674 | ||
675 | if (!path) | |
676 | path = TARGET_SYSTEM_ROOT; | |
677 | ||
678 | if (IS_DIR_SEPARATOR (*path) && path[1] == 0) | |
679 | path = ""; | |
e2243057 | 680 | |
55d5520a | 681 | return path; |
e2243057 RS |
682 | } |
683 | ||
252b5132 RH |
684 | /* We need to find any explicitly given emulation in order to initialize the |
685 | state that's needed by the lex&yacc argument parser (parse_args). */ | |
686 | ||
687 | static char * | |
1579bae1 | 688 | get_emulation (int argc, char **argv) |
252b5132 RH |
689 | { |
690 | char *emulation; | |
691 | int i; | |
692 | ||
693 | emulation = getenv (EMULATION_ENVIRON); | |
694 | if (emulation == NULL) | |
695 | emulation = DEFAULT_EMULATION; | |
696 | ||
697 | for (i = 1; i < argc; i++) | |
698 | { | |
08dedd66 | 699 | if (startswith (argv[i], "-m")) |
252b5132 RH |
700 | { |
701 | if (argv[i][2] == '\0') | |
702 | { | |
703 | /* -m EMUL */ | |
704 | if (i < argc - 1) | |
705 | { | |
706 | emulation = argv[i + 1]; | |
707 | i++; | |
708 | } | |
709 | else | |
df5f2391 | 710 | einfo (_("%F%P: missing argument to -m\n")); |
252b5132 RH |
711 | } |
712 | else if (strcmp (argv[i], "-mips1") == 0 | |
713 | || strcmp (argv[i], "-mips2") == 0 | |
714 | || strcmp (argv[i], "-mips3") == 0 | |
d1cf510e | 715 | || strcmp (argv[i], "-mips4") == 0 |
6f33421c CD |
716 | || strcmp (argv[i], "-mips5") == 0 |
717 | || strcmp (argv[i], "-mips32") == 0 | |
718 | || strcmp (argv[i], "-mips32r2") == 0 | |
c0f6e439 MJ |
719 | || strcmp (argv[i], "-mips32r3") == 0 |
720 | || strcmp (argv[i], "-mips32r5") == 0 | |
7361da2c | 721 | || strcmp (argv[i], "-mips32r6") == 0 |
5f74bc13 | 722 | || strcmp (argv[i], "-mips64") == 0 |
7361da2c | 723 | || strcmp (argv[i], "-mips64r2") == 0 |
c0f6e439 MJ |
724 | || strcmp (argv[i], "-mips64r3") == 0 |
725 | || strcmp (argv[i], "-mips64r5") == 0 | |
7361da2c | 726 | || strcmp (argv[i], "-mips64r6") == 0) |
252b5132 | 727 | { |
31d677f9 | 728 | /* FIXME: The arguments -mips1, -mips2, -mips3, etc. are |
252b5132 RH |
729 | passed to the linker by some MIPS compilers. They |
730 | generally tell the linker to use a slightly different | |
731 | library path. Perhaps someday these should be | |
732 | implemented as emulations; until then, we just ignore | |
733 | the arguments and hope that nobody ever creates | |
734 | emulations named ips1, ips2 or ips3. */ | |
735 | } | |
736 | else if (strcmp (argv[i], "-m486") == 0) | |
737 | { | |
738 | /* FIXME: The argument -m486 is passed to the linker on | |
739 | some Linux systems. Hope that nobody creates an | |
740 | emulation named 486. */ | |
741 | } | |
742 | else | |
743 | { | |
744 | /* -mEMUL */ | |
745 | emulation = &argv[i][2]; | |
746 | } | |
747 | } | |
748 | } | |
749 | ||
750 | return emulation; | |
751 | } | |
752 | ||
252b5132 | 753 | void |
1579bae1 | 754 | add_ysym (const char *name) |
252b5132 | 755 | { |
1579bae1 | 756 | if (link_info.notice_hash == NULL) |
252b5132 | 757 | { |
0aa7f586 AM |
758 | link_info.notice_hash |
759 | = (struct bfd_hash_table *) xmalloc (sizeof (struct bfd_hash_table)); | |
66eb6687 AM |
760 | if (!bfd_hash_table_init_n (link_info.notice_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")); |
6d5e62f8 | 765 | } |
252b5132 | 766 | |
f38a2680 | 767 | if (bfd_hash_lookup (link_info.notice_hash, name, true, true) == NULL) |
df5f2391 | 768 | einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); |
252b5132 RH |
769 | } |
770 | ||
0e86e20e AM |
771 | void |
772 | add_ignoresym (struct bfd_link_info *info, const char *name) | |
773 | { | |
774 | if (info->ignore_hash == NULL) | |
775 | { | |
776 | info->ignore_hash = xmalloc (sizeof (struct bfd_hash_table)); | |
0aa7f586 AM |
777 | if (!bfd_hash_table_init_n (info->ignore_hash, |
778 | bfd_hash_newfunc, | |
779 | sizeof (struct bfd_hash_entry), | |
780 | 61)) | |
df5f2391 | 781 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); |
0e86e20e AM |
782 | } |
783 | ||
f38a2680 | 784 | if (bfd_hash_lookup (info->ignore_hash, name, true, true) == NULL) |
df5f2391 | 785 | einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); |
0e86e20e AM |
786 | } |
787 | ||
252b5132 RH |
788 | /* Record a symbol to be wrapped, from the --wrap option. */ |
789 | ||
790 | void | |
1579bae1 | 791 | add_wrap (const char *name) |
252b5132 RH |
792 | { |
793 | if (link_info.wrap_hash == NULL) | |
794 | { | |
0aa7f586 AM |
795 | link_info.wrap_hash |
796 | = (struct bfd_hash_table *) xmalloc (sizeof (struct bfd_hash_table)); | |
66eb6687 AM |
797 | if (!bfd_hash_table_init_n (link_info.wrap_hash, |
798 | bfd_hash_newfunc, | |
799 | sizeof (struct bfd_hash_entry), | |
800 | 61)) | |
df5f2391 | 801 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); |
252b5132 | 802 | } |
0125cdf2 | 803 | |
f38a2680 | 804 | if (bfd_hash_lookup (link_info.wrap_hash, name, true, true) == NULL) |
df5f2391 | 805 | einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); |
252b5132 RH |
806 | } |
807 | ||
808 | /* Handle the -retain-symbols-file option. */ | |
809 | ||
810 | void | |
1579bae1 | 811 | add_keepsyms_file (const char *filename) |
252b5132 RH |
812 | { |
813 | FILE *file; | |
814 | char *buf; | |
815 | size_t bufsize; | |
816 | int c; | |
817 | ||
818 | if (link_info.strip == strip_some) | |
819 | einfo (_("%X%P: error: duplicate retain-symbols-file\n")); | |
820 | ||
821 | file = fopen (filename, "r"); | |
1579bae1 | 822 | if (file == NULL) |
252b5132 RH |
823 | { |
824 | bfd_set_error (bfd_error_system_call); | |
825 | einfo ("%X%P: %s: %E\n", filename); | |
826 | return; | |
827 | } | |
828 | ||
1e9cc1c2 NC |
829 | link_info.keep_hash = (struct bfd_hash_table *) |
830 | xmalloc (sizeof (struct bfd_hash_table)); | |
66eb6687 AM |
831 | if (!bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc, |
832 | sizeof (struct bfd_hash_entry))) | |
df5f2391 | 833 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); |
252b5132 RH |
834 | |
835 | bufsize = 100; | |
1e9cc1c2 | 836 | buf = (char *) xmalloc (bufsize); |
252b5132 RH |
837 | |
838 | c = getc (file); | |
839 | while (c != EOF) | |
840 | { | |
3882b010 | 841 | while (ISSPACE (c)) |
252b5132 RH |
842 | c = getc (file); |
843 | ||
844 | if (c != EOF) | |
845 | { | |
846 | size_t len = 0; | |
847 | ||
0aa7f586 | 848 | while (!ISSPACE (c) && c != EOF) |
252b5132 RH |
849 | { |
850 | buf[len] = c; | |
851 | ++len; | |
852 | if (len >= bufsize) | |
853 | { | |
854 | bufsize *= 2; | |
1e9cc1c2 | 855 | buf = (char *) xrealloc (buf, bufsize); |
252b5132 RH |
856 | } |
857 | c = getc (file); | |
858 | } | |
859 | ||
860 | buf[len] = '\0'; | |
861 | ||
f38a2680 | 862 | if (bfd_hash_lookup (link_info.keep_hash, buf, true, true) == NULL) |
df5f2391 | 863 | einfo (_("%F%P: bfd_hash_lookup for insertion failed: %E\n")); |
252b5132 RH |
864 | } |
865 | } | |
866 | ||
867 | if (link_info.strip != strip_none) | |
868 | einfo (_("%P: `-retain-symbols-file' overrides `-s' and `-S'\n")); | |
869 | ||
5ed6aba4 | 870 | free (buf); |
252b5132 | 871 | link_info.strip = strip_some; |
d9313f4f | 872 | fclose (file); |
252b5132 RH |
873 | } |
874 | \f | |
875 | /* Callbacks from the BFD linker routines. */ | |
876 | ||
877 | /* This is called when BFD has decided to include an archive member in | |
878 | a link. */ | |
879 | ||
f38a2680 | 880 | static bool |
e1fffbe6 | 881 | add_archive_element (struct bfd_link_info *info, |
1579bae1 | 882 | bfd *abfd, |
5d3236ee DK |
883 | const char *name, |
884 | bfd **subsbfd ATTRIBUTE_UNUSED) | |
252b5132 RH |
885 | { |
886 | lang_input_statement_type *input; | |
1fa4ec6a | 887 | lang_input_statement_type *parent; |
5d3236ee | 888 | lang_input_statement_type orig_input; |
252b5132 | 889 | |
1e9cc1c2 NC |
890 | input = (lang_input_statement_type *) |
891 | xcalloc (1, sizeof (lang_input_statement_type)); | |
fb47deda | 892 | input->header.type = lang_input_statement_enum; |
607b4833 AM |
893 | input->filename = bfd_get_filename (abfd); |
894 | input->local_sym_name = bfd_get_filename (abfd); | |
252b5132 | 895 | input->the_bfd = abfd; |
252b5132 | 896 | |
5d3236ee DK |
897 | /* Save the original data for trace files/tries below, as plugins |
898 | (if enabled) may possibly alter it to point to a replacement | |
899 | BFD, but we still want to output the original BFD filename. */ | |
900 | orig_input = *input; | |
0381901e | 901 | #if BFD_SUPPORTS_PLUGINS |
b95a0a31 | 902 | if (link_info.lto_plugin_active) |
5d3236ee DK |
903 | { |
904 | /* We must offer this archive member to the plugins to claim. */ | |
35a1e5f3 L |
905 | plugin_maybe_claim (input); |
906 | if (input->flags.claimed) | |
5d3236ee | 907 | { |
b95a0a31 L |
908 | if (no_more_claiming) |
909 | { | |
910 | /* Don't claim new IR symbols after all IR symbols have | |
911 | been claimed. */ | |
5c87f94b | 912 | if (verbose) |
6e0c75f7 | 913 | info_msg ("%pI: no new IR symbols to claim\n", |
b95a0a31 L |
914 | &orig_input); |
915 | input->flags.claimed = 0; | |
f38a2680 | 916 | return false; |
b95a0a31 | 917 | } |
f38a2680 | 918 | input->flags.claim_archive = true; |
35a1e5f3 | 919 | *subsbfd = input->the_bfd; |
5d3236ee DK |
920 | } |
921 | } | |
0381901e | 922 | #endif /* BFD_SUPPORTS_PLUGINS */ |
5d3236ee | 923 | |
9221725d AM |
924 | if (link_info.input_bfds_tail == &input->the_bfd->link.next |
925 | || input->the_bfd->link.next != NULL) | |
926 | { | |
927 | /* We have already loaded this element, and are attempting to | |
928 | load it again. This can happen when the archive map doesn't | |
929 | match actual symbols defined by the element. */ | |
930 | free (input); | |
931 | bfd_set_error (bfd_error_malformed_archive); | |
f38a2680 | 932 | return false; |
9221725d AM |
933 | } |
934 | ||
935 | /* Set the file_chain pointer of archives to the last element loaded | |
936 | from the archive. See ldlang.c:find_rescan_insertion. */ | |
937 | parent = bfd_usrdata (abfd->my_archive); | |
938 | if (parent != NULL && !parent->flags.reload) | |
939 | parent->next = input; | |
940 | ||
252b5132 RH |
941 | ldlang_add_file (input); |
942 | ||
1579bae1 | 943 | if (config.map_file != NULL) |
252b5132 | 944 | { |
f38a2680 | 945 | static bool header_printed; |
252b5132 RH |
946 | struct bfd_link_hash_entry *h; |
947 | bfd *from; | |
948 | int len; | |
949 | ||
f38a2680 | 950 | h = bfd_link_hash_lookup (info->hash, name, false, false, true); |
aa654ee8 AM |
951 | if (h == NULL |
952 | && info->pei386_auto_import | |
08dedd66 | 953 | && startswith (name, "__imp_")) |
f38a2680 | 954 | h = bfd_link_hash_lookup (info->hash, name + 6, false, false, true); |
252b5132 RH |
955 | |
956 | if (h == NULL) | |
957 | from = NULL; | |
958 | else | |
959 | { | |
960 | switch (h->type) | |
961 | { | |
962 | default: | |
963 | from = NULL; | |
964 | break; | |
965 | ||
966 | case bfd_link_hash_defined: | |
967 | case bfd_link_hash_defweak: | |
968 | from = h->u.def.section->owner; | |
969 | break; | |
970 | ||
971 | case bfd_link_hash_undefined: | |
972 | case bfd_link_hash_undefweak: | |
973 | from = h->u.undef.abfd; | |
974 | break; | |
975 | ||
976 | case bfd_link_hash_common: | |
977 | from = h->u.c.p->section->owner; | |
978 | break; | |
979 | } | |
980 | } | |
981 | ||
0aa7f586 | 982 | if (!header_printed) |
252b5132 | 983 | { |
1273da04 | 984 | minfo (_("Archive member included to satisfy reference by file (symbol)\n\n")); |
f38a2680 | 985 | header_printed = true; |
252b5132 RH |
986 | } |
987 | ||
3860d2b4 AM |
988 | if (abfd->my_archive == NULL |
989 | || bfd_is_thin_archive (abfd->my_archive)) | |
252b5132 RH |
990 | { |
991 | minfo ("%s", bfd_get_filename (abfd)); | |
992 | len = strlen (bfd_get_filename (abfd)); | |
993 | } | |
994 | else | |
995 | { | |
3860d2b4 | 996 | minfo ("%s(%s)", bfd_get_filename (abfd->my_archive), |
252b5132 | 997 | bfd_get_filename (abfd)); |
3860d2b4 | 998 | len = (strlen (bfd_get_filename (abfd->my_archive)) |
252b5132 RH |
999 | + strlen (bfd_get_filename (abfd)) |
1000 | + 2); | |
1001 | } | |
1002 | ||
1003 | if (len >= 29) | |
1004 | { | |
1005 | print_nl (); | |
1006 | len = 0; | |
1007 | } | |
6b9bd54c | 1008 | print_spaces (30 - len); |
252b5132 RH |
1009 | |
1010 | if (from != NULL) | |
871b3ab2 | 1011 | minfo ("%pB ", from); |
252b5132 | 1012 | if (h != NULL) |
c1c8c1ef | 1013 | minfo ("(%pT)\n", h->root.string); |
252b5132 RH |
1014 | else |
1015 | minfo ("(%s)\n", name); | |
1016 | } | |
1017 | ||
727a29ba AM |
1018 | if (verbose |
1019 | || trace_files > 1 | |
1020 | || (trace_files && bfd_is_thin_archive (orig_input.the_bfd->my_archive))) | |
c1c8c1ef | 1021 | info_msg ("%pI\n", &orig_input); |
f38a2680 | 1022 | return true; |
252b5132 RH |
1023 | } |
1024 | ||
1025 | /* This is called when BFD has discovered a symbol which is defined | |
1026 | multiple times. */ | |
1027 | ||
1a72702b | 1028 | static void |
24f58f47 AM |
1029 | multiple_definition (struct bfd_link_info *info, |
1030 | struct bfd_link_hash_entry *h, | |
1579bae1 AM |
1031 | bfd *nbfd, |
1032 | asection *nsec, | |
1033 | bfd_vma nval) | |
252b5132 | 1034 | { |
24f58f47 AM |
1035 | const char *name; |
1036 | bfd *obfd; | |
1037 | asection *osec; | |
1038 | bfd_vma oval; | |
1039 | ||
1040 | if (info->allow_multiple_definition) | |
1a72702b | 1041 | return; |
24f58f47 AM |
1042 | |
1043 | switch (h->type) | |
1044 | { | |
1045 | case bfd_link_hash_defined: | |
1046 | osec = h->u.def.section; | |
1047 | oval = h->u.def.value; | |
1048 | obfd = h->u.def.section->owner; | |
1049 | break; | |
1050 | case bfd_link_hash_indirect: | |
1051 | osec = bfd_ind_section_ptr; | |
1052 | oval = 0; | |
1053 | obfd = NULL; | |
1054 | break; | |
1055 | default: | |
1056 | abort (); | |
1057 | } | |
1058 | ||
1059 | /* Ignore a redefinition of an absolute symbol to the | |
1060 | same value; it's harmless. */ | |
1061 | if (h->type == bfd_link_hash_defined | |
1062 | && bfd_is_abs_section (osec) | |
1063 | && bfd_is_abs_section (nsec) | |
1064 | && nval == oval) | |
1a72702b | 1065 | return; |
24f58f47 | 1066 | |
252b5132 RH |
1067 | /* If either section has the output_section field set to |
1068 | bfd_abs_section_ptr, it means that the section is being | |
1069 | discarded, and this is not really a multiple definition at all. | |
9e2278f5 AM |
1070 | FIXME: It would be cleaner to somehow ignore symbols defined in |
1071 | sections which are being discarded. */ | |
3f0a5f17 ME |
1072 | if (!info->prohibit_multiple_definition_absolute |
1073 | && ((osec->output_section != NULL | |
1074 | && ! bfd_is_abs_section (osec) | |
1075 | && bfd_is_abs_section (osec->output_section)) | |
1076 | || (nsec->output_section != NULL | |
1077 | && !bfd_is_abs_section (nsec) | |
1078 | && bfd_is_abs_section (nsec->output_section)))) | |
1a72702b | 1079 | return; |
252b5132 | 1080 | |
24f58f47 AM |
1081 | name = h->root.string; |
1082 | if (nbfd == NULL) | |
1083 | { | |
1084 | nbfd = obfd; | |
1085 | nsec = osec; | |
1086 | nval = oval; | |
1087 | obfd = NULL; | |
1088 | } | |
70993db3 AM |
1089 | if (info->warn_multiple_definition) |
1090 | einfo (_("%P: %C: warning: multiple definition of `%pT'"), | |
1091 | nbfd, nsec, nval, name); | |
1092 | else | |
1093 | einfo (_("%X%P: %C: multiple definition of `%pT'"), | |
1094 | nbfd, nsec, nval, name); | |
1579bae1 | 1095 | if (obfd != NULL) |
df5f2391 AM |
1096 | einfo (_("; %D: first defined here"), obfd, osec, oval); |
1097 | einfo ("\n"); | |
9b14b192 | 1098 | |
13761a11 | 1099 | if (RELAXATION_ENABLED_BY_USER) |
9b14b192 | 1100 | { |
df5f2391 | 1101 | einfo (_("%P: disabling relaxation; it will not work with multiple definitions\n")); |
13761a11 | 1102 | DISABLE_RELAXATION; |
9b14b192 | 1103 | } |
252b5132 RH |
1104 | } |
1105 | ||
1106 | /* This is called when there is a definition of a common symbol, or | |
1107 | when a common symbol is found for a symbol that is already defined, | |
1108 | or when two common symbols are found. We only do something if | |
1109 | -warn-common was used. */ | |
1110 | ||
1a72702b | 1111 | static void |
1579bae1 | 1112 | multiple_common (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
24f58f47 | 1113 | struct bfd_link_hash_entry *h, |
1579bae1 AM |
1114 | bfd *nbfd, |
1115 | enum bfd_link_hash_type ntype, | |
1116 | bfd_vma nsize) | |
252b5132 | 1117 | { |
24f58f47 AM |
1118 | const char *name; |
1119 | bfd *obfd; | |
1120 | enum bfd_link_hash_type otype; | |
1121 | bfd_vma osize; | |
1122 | ||
1123 | if (!config.warn_common) | |
1a72702b | 1124 | return; |
252b5132 | 1125 | |
24f58f47 AM |
1126 | name = h->root.string; |
1127 | otype = h->type; | |
1128 | if (otype == bfd_link_hash_common) | |
1129 | { | |
1130 | obfd = h->u.c.p->section->owner; | |
1131 | osize = h->u.c.size; | |
1132 | } | |
1133 | else if (otype == bfd_link_hash_defined | |
1134 | || otype == bfd_link_hash_defweak) | |
1135 | { | |
1136 | obfd = h->u.def.section->owner; | |
1137 | osize = 0; | |
1138 | } | |
1139 | else | |
1140 | { | |
1141 | /* FIXME: It would nice if we could report the BFD which defined | |
1142 | an indirect symbol, but we don't have anywhere to store the | |
1143 | information. */ | |
1144 | obfd = NULL; | |
1145 | osize = 0; | |
1146 | } | |
1147 | ||
252b5132 RH |
1148 | if (ntype == bfd_link_hash_defined |
1149 | || ntype == bfd_link_hash_defweak | |
1150 | || ntype == bfd_link_hash_indirect) | |
1151 | { | |
1152 | ASSERT (otype == bfd_link_hash_common); | |
252b5132 | 1153 | if (obfd != NULL) |
df5f2391 AM |
1154 | einfo (_("%P: %pB: warning: definition of `%pT' overriding common" |
1155 | " from %pB\n"), | |
1156 | nbfd, name, obfd); | |
1157 | else | |
1158 | einfo (_("%P: %pB: warning: definition of `%pT' overriding common\n"), | |
1159 | nbfd, name); | |
252b5132 RH |
1160 | } |
1161 | else if (otype == bfd_link_hash_defined | |
1162 | || otype == bfd_link_hash_defweak | |
1163 | || otype == bfd_link_hash_indirect) | |
1164 | { | |
1165 | ASSERT (ntype == bfd_link_hash_common); | |
252b5132 | 1166 | if (obfd != NULL) |
df5f2391 AM |
1167 | einfo (_("%P: %pB: warning: common of `%pT' overridden by definition" |
1168 | " from %pB\n"), | |
1169 | nbfd, name, obfd); | |
1170 | else | |
1171 | einfo (_("%P: %pB: warning: common of `%pT' overridden by definition\n"), | |
1172 | nbfd, name); | |
252b5132 RH |
1173 | } |
1174 | else | |
1175 | { | |
1176 | ASSERT (otype == bfd_link_hash_common && ntype == bfd_link_hash_common); | |
1177 | if (osize > nsize) | |
1178 | { | |
252b5132 | 1179 | if (obfd != NULL) |
df5f2391 AM |
1180 | einfo (_("%P: %pB: warning: common of `%pT' overridden" |
1181 | " by larger common from %pB\n"), | |
1182 | nbfd, name, obfd); | |
1183 | else | |
1184 | einfo (_("%P: %pB: warning: common of `%pT' overridden" | |
1185 | " by larger common\n"), | |
1186 | nbfd, name); | |
252b5132 RH |
1187 | } |
1188 | else if (nsize > osize) | |
1189 | { | |
252b5132 | 1190 | if (obfd != NULL) |
df5f2391 AM |
1191 | einfo (_("%P: %pB: warning: common of `%pT' overriding" |
1192 | " smaller common from %pB\n"), | |
1193 | nbfd, name, obfd); | |
1194 | else | |
1195 | einfo (_("%P: %pB: warning: common of `%pT' overriding" | |
1196 | " smaller common\n"), | |
1197 | nbfd, name); | |
252b5132 RH |
1198 | } |
1199 | else | |
1200 | { | |
252b5132 | 1201 | if (obfd != NULL) |
df5f2391 AM |
1202 | einfo (_("%P: %pB and %pB: warning: multiple common of `%pT'\n"), |
1203 | nbfd, obfd, name); | |
1204 | else | |
1205 | einfo (_("%P: %pB: warning: multiple common of `%pT'\n"), | |
1206 | nbfd, name); | |
252b5132 RH |
1207 | } |
1208 | } | |
252b5132 RH |
1209 | } |
1210 | ||
1211 | /* This is called when BFD has discovered a set element. H is the | |
1212 | entry in the linker hash table for the set. SECTION and VALUE | |
1213 | represent a value which should be added to the set. */ | |
1214 | ||
1a72702b | 1215 | static void |
1579bae1 AM |
1216 | add_to_set (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1217 | struct bfd_link_hash_entry *h, | |
1218 | bfd_reloc_code_real_type reloc, | |
1219 | bfd *abfd, | |
1220 | asection *section, | |
1221 | bfd_vma value) | |
252b5132 RH |
1222 | { |
1223 | if (config.warn_constructors) | |
1224 | einfo (_("%P: warning: global constructor %s used\n"), | |
1225 | h->root.string); | |
1226 | ||
0aa7f586 | 1227 | if (!config.build_constructors) |
1a72702b | 1228 | return; |
252b5132 | 1229 | |
1579bae1 | 1230 | ldctor_add_set_entry (h, reloc, NULL, section, value); |
252b5132 RH |
1231 | |
1232 | if (h->type == bfd_link_hash_new) | |
1233 | { | |
1234 | h->type = bfd_link_hash_undefined; | |
1235 | h->u.undef.abfd = abfd; | |
1236 | /* We don't call bfd_link_add_undef to add this to the list of | |
1237 | undefined symbols because we are going to define it | |
1238 | ourselves. */ | |
1239 | } | |
252b5132 RH |
1240 | } |
1241 | ||
1242 | /* This is called when BFD has discovered a constructor. This is only | |
1243 | called for some object file formats--those which do not handle | |
1244 | constructors in some more clever fashion. This is similar to | |
1245 | adding an element to a set, but less general. */ | |
1246 | ||
1a72702b | 1247 | static void |
1579bae1 | 1248 | constructor_callback (struct bfd_link_info *info, |
f38a2680 | 1249 | bool constructor, |
1579bae1 AM |
1250 | const char *name, |
1251 | bfd *abfd, | |
1252 | asection *section, | |
1253 | bfd_vma value) | |
252b5132 RH |
1254 | { |
1255 | char *s; | |
1256 | struct bfd_link_hash_entry *h; | |
1257 | char set_name[1 + sizeof "__CTOR_LIST__"]; | |
1258 | ||
1259 | if (config.warn_constructors) | |
1260 | einfo (_("%P: warning: global constructor %s used\n"), name); | |
1261 | ||
0aa7f586 | 1262 | if (!config.build_constructors) |
1a72702b | 1263 | return; |
252b5132 RH |
1264 | |
1265 | /* Ensure that BFD_RELOC_CTOR exists now, so that we can give a | |
1266 | useful error message. */ | |
0e86e20e | 1267 | if (bfd_reloc_type_lookup (info->output_bfd, BFD_RELOC_CTOR) == NULL |
0e1862bb | 1268 | && (bfd_link_relocatable (info) |
252b5132 | 1269 | || bfd_reloc_type_lookup (abfd, BFD_RELOC_CTOR) == NULL)) |
df5f2391 | 1270 | einfo (_("%F%P: BFD backend error: BFD_RELOC_CTOR unsupported\n")); |
252b5132 RH |
1271 | |
1272 | s = set_name; | |
1273 | if (bfd_get_symbol_leading_char (abfd) != '\0') | |
1274 | *s++ = bfd_get_symbol_leading_char (abfd); | |
1275 | if (constructor) | |
1276 | strcpy (s, "__CTOR_LIST__"); | |
1277 | else | |
1278 | strcpy (s, "__DTOR_LIST__"); | |
1279 | ||
f38a2680 | 1280 | h = bfd_link_hash_lookup (info->hash, set_name, true, true, true); |
252b5132 | 1281 | if (h == (struct bfd_link_hash_entry *) NULL) |
df5f2391 | 1282 | einfo (_("%F%P: bfd_link_hash_lookup failed: %E\n")); |
252b5132 RH |
1283 | if (h->type == bfd_link_hash_new) |
1284 | { | |
1285 | h->type = bfd_link_hash_undefined; | |
1286 | h->u.undef.abfd = abfd; | |
1287 | /* We don't call bfd_link_add_undef to add this to the list of | |
1288 | undefined symbols because we are going to define it | |
1289 | ourselves. */ | |
1290 | } | |
1291 | ||
1292 | ldctor_add_set_entry (h, BFD_RELOC_CTOR, name, section, value); | |
252b5132 RH |
1293 | } |
1294 | ||
1295 | /* A structure used by warning_callback to pass information through | |
1296 | bfd_map_over_sections. */ | |
1297 | ||
0125cdf2 NC |
1298 | struct warning_callback_info |
1299 | { | |
f38a2680 | 1300 | bool found; |
252b5132 RH |
1301 | const char *warning; |
1302 | const char *symbol; | |
1303 | asymbol **asymbols; | |
1304 | }; | |
1305 | ||
4c6d802e L |
1306 | /* Look through the relocs to see if we can find a plausible address |
1307 | for SYMBOL in ABFD. Return TRUE if found. Otherwise return FALSE. */ | |
1308 | ||
f38a2680 | 1309 | static bool |
4c6d802e L |
1310 | symbol_warning (const char *warning, const char *symbol, bfd *abfd) |
1311 | { | |
1312 | struct warning_callback_info cinfo; | |
1313 | ||
1314 | if (!bfd_generic_link_read_symbols (abfd)) | |
df5f2391 | 1315 | einfo (_("%F%P: %pB: could not read symbols: %E\n"), abfd); |
4c6d802e | 1316 | |
f38a2680 | 1317 | cinfo.found = false; |
4c6d802e L |
1318 | cinfo.warning = warning; |
1319 | cinfo.symbol = symbol; | |
1320 | cinfo.asymbols = bfd_get_outsymbols (abfd); | |
1321 | bfd_map_over_sections (abfd, warning_find_reloc, &cinfo); | |
1322 | return cinfo.found; | |
1323 | } | |
1324 | ||
252b5132 RH |
1325 | /* This is called when there is a reference to a warning symbol. */ |
1326 | ||
1a72702b | 1327 | static void |
1579bae1 AM |
1328 | warning_callback (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1329 | const char *warning, | |
1330 | const char *symbol, | |
1331 | bfd *abfd, | |
1332 | asection *section, | |
1333 | bfd_vma address) | |
252b5132 RH |
1334 | { |
1335 | /* This is a hack to support warn_multiple_gp. FIXME: This should | |
1336 | have a cleaner interface, but what? */ | |
0aa7f586 | 1337 | if (!config.warn_multiple_gp |
252b5132 | 1338 | && strcmp (warning, "using multiple gp values") == 0) |
1a72702b | 1339 | return; |
252b5132 RH |
1340 | |
1341 | if (section != NULL) | |
df5f2391 | 1342 | einfo ("%P: %C: %s%s\n", abfd, section, address, _("warning: "), warning); |
252b5132 | 1343 | else if (abfd == NULL) |
300475fe | 1344 | einfo ("%P: %s%s\n", _("warning: "), warning); |
252b5132 | 1345 | else if (symbol == NULL) |
df5f2391 | 1346 | einfo ("%P: %pB: %s%s\n", abfd, _("warning: "), warning); |
0aa7f586 | 1347 | else if (!symbol_warning (warning, symbol, abfd)) |
252b5132 | 1348 | { |
4c6d802e L |
1349 | bfd *b; |
1350 | /* Search all input files for a reference to SYMBOL. */ | |
c72f2fb2 | 1351 | for (b = info->input_bfds; b; b = b->link.next) |
4c6d802e | 1352 | if (b != abfd && symbol_warning (warning, symbol, b)) |
1a72702b | 1353 | return; |
df5f2391 | 1354 | einfo ("%P: %pB: %s%s\n", abfd, _("warning: "), warning); |
252b5132 | 1355 | } |
252b5132 RH |
1356 | } |
1357 | ||
1358 | /* This is called by warning_callback for each section. It checks the | |
1359 | relocs of the section to see if it can find a reference to the | |
1360 | symbol which triggered the warning. If it can, it uses the reloc | |
1361 | to give an error message with a file and line number. */ | |
1362 | ||
1363 | static void | |
1579bae1 | 1364 | warning_find_reloc (bfd *abfd, asection *sec, void *iarg) |
252b5132 | 1365 | { |
1e9cc1c2 | 1366 | struct warning_callback_info *info = (struct warning_callback_info *) iarg; |
252b5132 RH |
1367 | long relsize; |
1368 | arelent **relpp; | |
1369 | long relcount; | |
1370 | arelent **p, **pend; | |
1371 | ||
1372 | if (info->found) | |
1373 | return; | |
1374 | ||
1375 | relsize = bfd_get_reloc_upper_bound (abfd, sec); | |
1376 | if (relsize < 0) | |
df5f2391 | 1377 | einfo (_("%F%P: %pB: could not read relocs: %E\n"), abfd); |
252b5132 RH |
1378 | if (relsize == 0) |
1379 | return; | |
1380 | ||
1e9cc1c2 | 1381 | relpp = (arelent **) xmalloc (relsize); |
252b5132 RH |
1382 | relcount = bfd_canonicalize_reloc (abfd, sec, relpp, info->asymbols); |
1383 | if (relcount < 0) | |
df5f2391 | 1384 | einfo (_("%F%P: %pB: could not read relocs: %E\n"), abfd); |
252b5132 RH |
1385 | |
1386 | p = relpp; | |
1387 | pend = p + relcount; | |
1388 | for (; p < pend && *p != NULL; p++) | |
1389 | { | |
1390 | arelent *q = *p; | |
1391 | ||
1392 | if (q->sym_ptr_ptr != NULL | |
1393 | && *q->sym_ptr_ptr != NULL | |
1394 | && strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), info->symbol) == 0) | |
1395 | { | |
1396 | /* We found a reloc for the symbol we are looking for. */ | |
02d2a369 | 1397 | einfo ("%P: %H: %s%s\n", abfd, sec, q->address, _("warning: "), |
300475fe | 1398 | info->warning); |
f38a2680 | 1399 | info->found = true; |
252b5132 RH |
1400 | break; |
1401 | } | |
1402 | } | |
1403 | ||
1404 | free (relpp); | |
1405 | } | |
1406 | ||
23ae20f5 NC |
1407 | #if SUPPORT_ERROR_HANDLING_SCRIPT |
1408 | char * error_handling_script = NULL; | |
1409 | #endif | |
1410 | ||
252b5132 RH |
1411 | /* This is called when an undefined symbol is found. */ |
1412 | ||
1a72702b | 1413 | static void |
0e86e20e | 1414 | undefined_symbol (struct bfd_link_info *info, |
1579bae1 AM |
1415 | const char *name, |
1416 | bfd *abfd, | |
1417 | asection *section, | |
1418 | bfd_vma address, | |
f38a2680 | 1419 | bool error) |
252b5132 RH |
1420 | { |
1421 | static char *error_name; | |
1422 | static unsigned int error_count; | |
1423 | ||
1424 | #define MAX_ERRORS_IN_A_ROW 5 | |
1425 | ||
0e86e20e | 1426 | if (info->ignore_hash != NULL |
f38a2680 | 1427 | && bfd_hash_lookup (info->ignore_hash, name, false, false) != NULL) |
1a72702b | 1428 | return; |
0e86e20e | 1429 | |
252b5132 RH |
1430 | if (config.warn_once) |
1431 | { | |
252b5132 | 1432 | /* Only warn once about a particular undefined symbol. */ |
0e86e20e | 1433 | add_ignoresym (info, name); |
252b5132 RH |
1434 | } |
1435 | ||
1436 | /* We never print more than a reasonable number of errors in a row | |
1437 | for a single symbol. */ | |
1579bae1 | 1438 | if (error_name != NULL |
252b5132 RH |
1439 | && strcmp (name, error_name) == 0) |
1440 | ++error_count; | |
1441 | else | |
1442 | { | |
1443 | error_count = 0; | |
5e2ab612 | 1444 | free (error_name); |
d1b2b2dc | 1445 | error_name = xstrdup (name); |
252b5132 RH |
1446 | } |
1447 | ||
23ae20f5 NC |
1448 | #if SUPPORT_ERROR_HANDLING_SCRIPT |
1449 | if (error_handling_script != NULL | |
1450 | && error_count < MAX_ERRORS_IN_A_ROW) | |
1451 | { | |
1452 | char * argv[4]; | |
1453 | const char * res; | |
1454 | int status, err; | |
1455 | ||
1456 | argv[0] = error_handling_script; | |
93cf38c0 | 1457 | argv[1] = "undefined-symbol"; |
23ae20f5 NC |
1458 | argv[2] = (char *) name; |
1459 | argv[3] = NULL; | |
1460 | ||
1461 | if (verbose) | |
1462 | einfo (_("%P: About to run error handling script '%s' with arguments: '%s' '%s'\n"), | |
1463 | argv[0], argv[1], argv[2]); | |
1464 | ||
1465 | res = pex_one (PEX_SEARCH, error_handling_script, argv, | |
1466 | N_("error handling script"), | |
1467 | NULL /* Send stdout to random, temp file. */, | |
1468 | NULL /* Write to stderr. */, | |
1469 | &status, &err); | |
1470 | if (res != NULL) | |
1471 | { | |
1472 | einfo (_("%P: Failed to run error handling script '%s', reason: "), | |
1473 | error_handling_script); | |
1474 | /* FIXME: We assume here that errrno == err. */ | |
1475 | perror (res); | |
1476 | } | |
1477 | /* We ignore the return status of the script and | |
1478 | carry on to issue the normal error message. */ | |
1479 | } | |
1480 | #endif /* SUPPORT_ERROR_HANDLING_SCRIPT */ | |
1481 | ||
252b5132 RH |
1482 | if (section != NULL) |
1483 | { | |
1484 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1485 | { |
0b28295d | 1486 | if (error) |
02d2a369 | 1487 | einfo (_("%X%P: %H: undefined reference to `%pT'\n"), |
0b28295d ILT |
1488 | abfd, section, address, name); |
1489 | else | |
02d2a369 | 1490 | einfo (_("%P: %H: warning: undefined reference to `%pT'\n"), |
0b28295d | 1491 | abfd, section, address, name); |
b6f29aaa | 1492 | } |
252b5132 | 1493 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1494 | { |
1495 | if (error) | |
df5f2391 | 1496 | einfo (_("%X%P: %D: more undefined references to `%pT' follow\n"), |
0b28295d ILT |
1497 | abfd, section, address, name); |
1498 | else | |
df5f2391 | 1499 | einfo (_("%P: %D: warning: more undefined references to `%pT' follow\n"), |
0b28295d ILT |
1500 | abfd, section, address, name); |
1501 | } | |
1502 | else if (error) | |
1503 | einfo ("%X"); | |
252b5132 RH |
1504 | } |
1505 | else | |
1506 | { | |
1507 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1508 | { |
0b28295d | 1509 | if (error) |
df5f2391 | 1510 | einfo (_("%X%P: %pB: undefined reference to `%pT'\n"), |
0b28295d ILT |
1511 | abfd, name); |
1512 | else | |
df5f2391 | 1513 | einfo (_("%P: %pB: warning: undefined reference to `%pT'\n"), |
0b28295d | 1514 | abfd, name); |
b6f29aaa | 1515 | } |
252b5132 | 1516 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1517 | { |
1518 | if (error) | |
df5f2391 | 1519 | einfo (_("%X%P: %pB: more undefined references to `%pT' follow\n"), |
0b28295d ILT |
1520 | abfd, name); |
1521 | else | |
df5f2391 | 1522 | einfo (_("%P: %pB: warning: more undefined references to `%pT' follow\n"), |
0b28295d ILT |
1523 | abfd, name); |
1524 | } | |
1525 | else if (error) | |
1526 | einfo ("%X"); | |
252b5132 | 1527 | } |
252b5132 RH |
1528 | } |
1529 | ||
8aae64e6 AO |
1530 | /* Counter to limit the number of relocation overflow error messages |
1531 | to print. Errors are printed as it is decremented. When it's | |
1532 | called and the counter is zero, a final message is printed | |
1533 | indicating more relocations were omitted. When it gets to -1, no | |
1534 | such errors are printed. If it's initially set to a value less | |
1535 | than -1, all such errors will be printed (--verbose does this). */ | |
1536 | ||
1537 | int overflow_cutoff_limit = 10; | |
1538 | ||
252b5132 RH |
1539 | /* This is called when a reloc overflows. */ |
1540 | ||
1a72702b | 1541 | static void |
0e86e20e | 1542 | reloc_overflow (struct bfd_link_info *info, |
dfeffb9f | 1543 | struct bfd_link_hash_entry *entry, |
1579bae1 AM |
1544 | const char *name, |
1545 | const char *reloc_name, | |
1546 | bfd_vma addend, | |
1547 | bfd *abfd, | |
1548 | asection *section, | |
1549 | bfd_vma address) | |
252b5132 | 1550 | { |
8aae64e6 | 1551 | if (overflow_cutoff_limit == -1) |
1a72702b | 1552 | return; |
8aae64e6 | 1553 | |
a5990ada | 1554 | einfo ("%X%H:", abfd, section, address); |
8aae64e6 AO |
1555 | |
1556 | if (overflow_cutoff_limit >= 0 | |
1557 | && overflow_cutoff_limit-- == 0) | |
1558 | { | |
1559 | einfo (_(" additional relocation overflows omitted from the output\n")); | |
1a72702b | 1560 | return; |
8aae64e6 AO |
1561 | } |
1562 | ||
dfeffb9f L |
1563 | if (entry) |
1564 | { | |
1565 | while (entry->type == bfd_link_hash_indirect | |
1566 | || entry->type == bfd_link_hash_warning) | |
1567 | entry = entry->u.i.link; | |
1568 | switch (entry->type) | |
1569 | { | |
1570 | case bfd_link_hash_undefined: | |
1571 | case bfd_link_hash_undefweak: | |
0aa7f586 | 1572 | einfo (_(" relocation truncated to fit: " |
c1c8c1ef | 1573 | "%s against undefined symbol `%pT'"), |
dfeffb9f L |
1574 | reloc_name, entry->root.string); |
1575 | break; | |
1576 | case bfd_link_hash_defined: | |
1577 | case bfd_link_hash_defweak: | |
0aa7f586 | 1578 | einfo (_(" relocation truncated to fit: " |
c1c8c1ef | 1579 | "%s against symbol `%pT' defined in %pA section in %pB"), |
dfeffb9f | 1580 | reloc_name, entry->root.string, |
a6e1b90f L |
1581 | entry->u.def.section, |
1582 | entry->u.def.section == bfd_abs_section_ptr | |
0e86e20e | 1583 | ? info->output_bfd : entry->u.def.section->owner); |
dfeffb9f L |
1584 | break; |
1585 | default: | |
1586 | abort (); | |
1587 | break; | |
1588 | } | |
1589 | } | |
1590 | else | |
c1c8c1ef | 1591 | einfo (_(" relocation truncated to fit: %s against `%pT'"), |
dfeffb9f | 1592 | reloc_name, name); |
252b5132 RH |
1593 | if (addend != 0) |
1594 | einfo ("+%v", addend); | |
1595 | einfo ("\n"); | |
252b5132 RH |
1596 | } |
1597 | ||
1598 | /* This is called when a dangerous relocation is made. */ | |
1599 | ||
1a72702b | 1600 | static void |
1579bae1 AM |
1601 | reloc_dangerous (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1602 | const char *message, | |
1603 | bfd *abfd, | |
1604 | asection *section, | |
1605 | bfd_vma address) | |
252b5132 | 1606 | { |
a5990ada | 1607 | einfo (_("%X%H: dangerous relocation: %s\n"), |
e1fffbe6 | 1608 | abfd, section, address, message); |
252b5132 RH |
1609 | } |
1610 | ||
1611 | /* This is called when a reloc is being generated attached to a symbol | |
1612 | that is not being output. */ | |
1613 | ||
1a72702b | 1614 | static void |
1579bae1 AM |
1615 | unattached_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1616 | const char *name, | |
1617 | bfd *abfd, | |
1618 | asection *section, | |
1619 | bfd_vma address) | |
252b5132 | 1620 | { |
a5990ada | 1621 | einfo (_("%X%H: reloc refers to symbol `%pT' which is not being output\n"), |
e1fffbe6 | 1622 | abfd, section, address, name); |
252b5132 RH |
1623 | } |
1624 | ||
1625 | /* This is called if link_info.notice_all is set, or when a symbol in | |
1626 | link_info.notice_hash is found. Symbols are put in notice_hash | |
5d3236ee DK |
1627 | using the -y option, while notice_all is set if the --cref option |
1628 | has been supplied, or if there are any NOCROSSREFS sections in the | |
1629 | linker script; and if plugins are active, since they need to monitor | |
1630 | all references from non-IR files. */ | |
252b5132 | 1631 | |
f38a2680 | 1632 | static bool |
1579bae1 | 1633 | notice (struct bfd_link_info *info, |
35ed3f94 | 1634 | struct bfd_link_hash_entry *h, |
46135103 | 1635 | struct bfd_link_hash_entry *inh ATTRIBUTE_UNUSED, |
1579bae1 AM |
1636 | bfd *abfd, |
1637 | asection *section, | |
16d96b5b | 1638 | bfd_vma value, |
46135103 | 1639 | flagword flags ATTRIBUTE_UNUSED) |
252b5132 | 1640 | { |
35ed3f94 AM |
1641 | const char *name; |
1642 | ||
1643 | if (h == NULL) | |
5061a885 AM |
1644 | { |
1645 | if (command_line.cref || nocrossref_list != NULL) | |
1e9cc1c2 | 1646 | return handle_asneeded_cref (abfd, (enum notice_asneeded_action) value); |
f38a2680 | 1647 | return true; |
5061a885 AM |
1648 | } |
1649 | ||
35ed3f94 | 1650 | name = h->root.string; |
5d3236ee | 1651 | if (info->notice_hash != NULL |
f38a2680 | 1652 | && bfd_hash_lookup (info->notice_hash, name, false, false) != NULL) |
252b5132 RH |
1653 | { |
1654 | if (bfd_is_und_section (section)) | |
df5f2391 | 1655 | einfo (_("%P: %pB: reference to %s\n"), abfd, name); |
252b5132 | 1656 | else |
df5f2391 | 1657 | einfo (_("%P: %pB: definition of %s\n"), abfd, name); |
252b5132 RH |
1658 | } |
1659 | ||
1660 | if (command_line.cref || nocrossref_list != NULL) | |
1661 | add_cref (name, abfd, section, value); | |
1662 | ||
f38a2680 | 1663 | return true; |
252b5132 | 1664 | } |