Commit | Line | Data |
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252b5132 | 1 | /* Main program of GNU linker. |
250d07de | 2 | Copyright (C) 1991-2021 Free Software Foundation, Inc. |
252b5132 RH |
3 | Written by Steve Chamberlain steve@cygnus.com |
4 | ||
f96b4a7b | 5 | This file is part of the GNU Binutils. |
252b5132 | 6 | |
f96b4a7b | 7 | This program is free software; you can redistribute it and/or modify |
2fa9fc65 | 8 | it under the terms of the GNU General Public License as published by |
f96b4a7b NC |
9 | the Free Software Foundation; either version 3 of the License, or |
10 | (at your option) any later version. | |
252b5132 | 11 | |
f96b4a7b | 12 | This program is distributed in the hope that it will be useful, |
2fa9fc65 NC |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
252b5132 | 16 | |
2fa9fc65 | 17 | You should have received a copy of the GNU General Public License |
f96b4a7b NC |
18 | along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
20 | MA 02110-1301, USA. */ | |
252b5132 | 21 | |
252b5132 | 22 | #include "sysdep.h" |
3db64b00 | 23 | #include "bfd.h" |
3882b010 | 24 | #include "safe-ctype.h" |
252b5132 RH |
25 | #include "libiberty.h" |
26 | #include "progress.h" | |
27 | #include "bfdlink.h" | |
1ff6de03 | 28 | #include "ctf-api.h" |
5af11cab | 29 | #include "filenames.h" |
cae64165 | 30 | #include "elf/common.h" |
252b5132 RH |
31 | |
32 | #include "ld.h" | |
33 | #include "ldmain.h" | |
34 | #include "ldmisc.h" | |
35 | #include "ldwrite.h" | |
252b5132 RH |
36 | #include "ldexp.h" |
37 | #include "ldlang.h" | |
df2a7313 | 38 | #include <ldgram.h> |
252b5132 RH |
39 | #include "ldlex.h" |
40 | #include "ldfile.h" | |
b71e2778 | 41 | #include "ldemul.h" |
252b5132 | 42 | #include "ldctor.h" |
0381901e | 43 | #if BFD_SUPPORTS_PLUGINS |
5d3236ee DK |
44 | #include "plugin.h" |
45 | #include "plugin-api.h" | |
0381901e | 46 | #endif /* BFD_SUPPORTS_PLUGINS */ |
252b5132 | 47 | |
0125cdf2 | 48 | /* Somewhere above, sys/stat.h got included. */ |
252b5132 RH |
49 | #if !defined(S_ISDIR) && defined(S_IFDIR) |
50 | #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) | |
51 | #endif | |
52 | ||
53 | #include <string.h> | |
54 | ||
9c8ebd6a DJ |
55 | #ifndef TARGET_SYSTEM_ROOT |
56 | #define TARGET_SYSTEM_ROOT "" | |
57 | #endif | |
58 | ||
252b5132 RH |
59 | /* EXPORTS */ |
60 | ||
53d25da6 AM |
61 | FILE *saved_script_handle = NULL; |
62 | FILE *previous_script_handle = NULL; | |
63 | bfd_boolean force_make_executable = FALSE; | |
64 | ||
252b5132 RH |
65 | char *default_target; |
66 | const char *output_filename = "a.out"; | |
67 | ||
68 | /* Name this program was invoked by. */ | |
69 | char *program_name; | |
70 | ||
9c8ebd6a | 71 | /* The prefix for system library directories. */ |
e2243057 | 72 | const char *ld_sysroot; |
9c8ebd6a | 73 | |
3fe38064 | 74 | /* The canonical representation of ld_sysroot. */ |
0aa7f586 | 75 | char *ld_canon_sysroot; |
3fe38064 NC |
76 | int ld_canon_sysroot_len; |
77 | ||
e8044f35 | 78 | /* Set by -G argument, for targets like MIPS ELF. */ |
252b5132 RH |
79 | int g_switch_value = 8; |
80 | ||
81 | /* Nonzero means print names of input files as processed. */ | |
727a29ba | 82 | unsigned int trace_files; |
252b5132 | 83 | |
cd6f1cf3 NC |
84 | /* Nonzero means report actions taken by the linker, and describe the linker script in use. */ |
85 | bfd_boolean verbose; | |
252b5132 RH |
86 | |
87 | /* Nonzero means version number was printed, so exit successfully | |
88 | instead of complaining if no input files are given. */ | |
b34976b6 | 89 | bfd_boolean version_printed; |
252b5132 | 90 | |
b34976b6 AM |
91 | /* TRUE if we should demangle symbol names. */ |
92 | bfd_boolean demangling; | |
252b5132 RH |
93 | |
94 | args_type command_line; | |
95 | ||
96 | ld_config_type config; | |
97 | ||
bcaa7b3e L |
98 | sort_type sort_section; |
99 | ||
e2243057 RS |
100 | static const char *get_sysroot |
101 | (int, char **); | |
0125cdf2 | 102 | static char *get_emulation |
1579bae1 | 103 | (int, char **); |
0125cdf2 | 104 | static bfd_boolean add_archive_element |
5d3236ee | 105 | (struct bfd_link_info *, bfd *, const char *, bfd **); |
1a72702b | 106 | static void multiple_definition |
24f58f47 | 107 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
1579bae1 | 108 | bfd *, asection *, bfd_vma); |
1a72702b | 109 | static void multiple_common |
24f58f47 AM |
110 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
111 | bfd *, enum bfd_link_hash_type, bfd_vma); | |
1a72702b | 112 | static void add_to_set |
1579bae1 AM |
113 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
114 | bfd_reloc_code_real_type, bfd *, asection *, bfd_vma); | |
1a72702b | 115 | static void constructor_callback |
1579bae1 AM |
116 | (struct bfd_link_info *, bfd_boolean, const char *, bfd *, |
117 | asection *, bfd_vma); | |
1a72702b | 118 | static void warning_callback |
1579bae1 AM |
119 | (struct bfd_link_info *, const char *, const char *, bfd *, |
120 | asection *, bfd_vma); | |
0125cdf2 | 121 | static void warning_find_reloc |
1579bae1 | 122 | (bfd *, asection *, void *); |
1a72702b | 123 | static void undefined_symbol |
1579bae1 AM |
124 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma, |
125 | bfd_boolean); | |
1a72702b | 126 | static void reloc_overflow |
dfeffb9f L |
127 | (struct bfd_link_info *, struct bfd_link_hash_entry *, const char *, |
128 | const char *, bfd_vma, bfd *, asection *, bfd_vma); | |
1a72702b | 129 | static void reloc_dangerous |
1579bae1 | 130 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
1a72702b | 131 | static void unattached_reloc |
1579bae1 | 132 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
0125cdf2 | 133 | static bfd_boolean notice |
35ed3f94 | 134 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
46135103 | 135 | struct bfd_link_hash_entry *, bfd *, asection *, bfd_vma, flagword); |
0125cdf2 NC |
136 | |
137 | static struct bfd_link_callbacks link_callbacks = | |
138 | { | |
252b5132 RH |
139 | add_archive_element, |
140 | multiple_definition, | |
141 | multiple_common, | |
142 | add_to_set, | |
143 | constructor_callback, | |
144 | warning_callback, | |
145 | undefined_symbol, | |
146 | reloc_overflow, | |
147 | reloc_dangerous, | |
148 | unattached_reloc, | |
e1fffbe6 | 149 | notice, |
2889e75b | 150 | einfo, |
49fa1e15 AM |
151 | info_msg, |
152 | minfo, | |
1ff6de03 | 153 | ldlang_override_segment_assignment, |
3d16b64e NA |
154 | ldlang_ctf_acquire_strings, |
155 | NULL, | |
156 | ldlang_ctf_new_dynsym, | |
1ff6de03 | 157 | ldlang_write_ctf_late |
252b5132 RH |
158 | }; |
159 | ||
3b66a141 | 160 | static bfd_assert_handler_type default_bfd_assert_handler; |
4519d071 | 161 | static bfd_error_handler_type default_bfd_error_handler; |
3b66a141 | 162 | |
252b5132 RH |
163 | struct bfd_link_info link_info; |
164 | \f | |
f37b21b4 RM |
165 | struct dependency_file |
166 | { | |
167 | struct dependency_file *next; | |
168 | char *name; | |
169 | }; | |
170 | ||
171 | static struct dependency_file *dependency_files, *dependency_files_tail; | |
172 | ||
173 | void | |
174 | track_dependency_files (const char *filename) | |
175 | { | |
176 | struct dependency_file *dep | |
177 | = (struct dependency_file *) xmalloc (sizeof (*dep)); | |
178 | dep->name = xstrdup (filename); | |
179 | dep->next = NULL; | |
180 | if (dependency_files == NULL) | |
181 | dependency_files = dep; | |
182 | else | |
183 | dependency_files_tail->next = dep; | |
184 | dependency_files_tail = dep; | |
185 | } | |
186 | ||
187 | static void | |
188 | write_dependency_file (void) | |
189 | { | |
190 | FILE *out; | |
191 | struct dependency_file *dep; | |
192 | ||
193 | out = fopen (config.dependency_file, FOPEN_WT); | |
194 | if (out == NULL) | |
195 | { | |
196 | einfo (_("%F%P: cannot open dependency file %s: %E\n"), | |
197 | config.dependency_file); | |
198 | } | |
199 | ||
200 | fprintf (out, "%s:", output_filename); | |
201 | ||
202 | for (dep = dependency_files; dep != NULL; dep = dep->next) | |
203 | fprintf (out, " \\\n %s", dep->name); | |
204 | ||
205 | fprintf (out, "\n"); | |
206 | for (dep = dependency_files; dep != NULL; dep = dep->next) | |
207 | fprintf (out, "\n%s:\n", dep->name); | |
208 | ||
209 | fclose (out); | |
210 | } | |
211 | \f | |
252b5132 | 212 | static void |
498cd2a0 | 213 | ld_cleanup (void) |
252b5132 | 214 | { |
498cd2a0 | 215 | bfd_cache_close_all (); |
0381901e | 216 | #if BFD_SUPPORTS_PLUGINS |
498cd2a0 AM |
217 | plugin_call_cleanup (); |
218 | #endif | |
219 | if (output_filename && delete_output_file_on_failure) | |
220 | unlink_if_ordinary (output_filename); | |
252b5132 RH |
221 | } |
222 | ||
4519d071 | 223 | /* Hook to notice BFD assertions. */ |
3b66a141 HPN |
224 | |
225 | static void | |
226 | ld_bfd_assert_handler (const char *fmt, const char *bfdver, | |
227 | const char *file, int line) | |
228 | { | |
3b66a141 | 229 | config.make_executable = FALSE; |
4519d071 AM |
230 | (*default_bfd_assert_handler) (fmt, bfdver, file, line); |
231 | } | |
232 | ||
233 | /* Hook the bfd error/warning handler for --fatal-warnings. */ | |
234 | ||
235 | static void | |
236 | ld_bfd_error_handler (const char *fmt, va_list ap) | |
237 | { | |
238 | if (config.fatal_warnings) | |
239 | config.make_executable = FALSE; | |
240 | (*default_bfd_error_handler) (fmt, ap); | |
3b66a141 HPN |
241 | } |
242 | ||
252b5132 | 243 | int |
1579bae1 | 244 | main (int argc, char **argv) |
252b5132 RH |
245 | { |
246 | char *emulation; | |
247 | long start_time = get_run_time (); | |
248 | ||
249 | #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) | |
250 | setlocale (LC_MESSAGES, ""); | |
3882b010 L |
251 | #endif |
252 | #if defined (HAVE_SETLOCALE) | |
253 | setlocale (LC_CTYPE, ""); | |
252b5132 RH |
254 | #endif |
255 | bindtextdomain (PACKAGE, LOCALEDIR); | |
256 | textdomain (PACKAGE); | |
257 | ||
258 | program_name = argv[0]; | |
259 | xmalloc_set_program_name (program_name); | |
260 | ||
261 | START_PROGRESS (program_name, 0); | |
262 | ||
869b9d07 MM |
263 | expandargv (&argc, &argv); |
264 | ||
bf2dd8d7 AM |
265 | if (bfd_init () != BFD_INIT_MAGIC) |
266 | einfo (_("%F%P: fatal error: libbfd ABI mismatch\n")); | |
252b5132 RH |
267 | |
268 | bfd_set_error_program_name (program_name); | |
269 | ||
3b66a141 HPN |
270 | /* We want to notice and fail on those nasty BFD assertions which are |
271 | likely to signal incorrect output being generated but otherwise may | |
272 | leave no trace. */ | |
273 | default_bfd_assert_handler = bfd_set_assert_handler (ld_bfd_assert_handler); | |
274 | ||
4519d071 AM |
275 | /* Also hook the bfd error/warning handler for --fatal-warnings. */ |
276 | default_bfd_error_handler = bfd_set_error_handler (ld_bfd_error_handler); | |
277 | ||
498cd2a0 | 278 | xatexit (ld_cleanup); |
252b5132 | 279 | |
e2243057 RS |
280 | /* Set up the sysroot directory. */ |
281 | ld_sysroot = get_sysroot (argc, argv); | |
282 | if (*ld_sysroot) | |
3074964f | 283 | ld_canon_sysroot = lrealpath (ld_sysroot); |
3fe38064 | 284 | if (ld_canon_sysroot) |
889be5db DR |
285 | { |
286 | ld_canon_sysroot_len = strlen (ld_canon_sysroot); | |
287 | ||
288 | /* is_sysrooted_pathname() relies on no trailing dirsep. */ | |
289 | if (ld_canon_sysroot_len > 0 | |
290 | && IS_DIR_SEPARATOR (ld_canon_sysroot [ld_canon_sysroot_len - 1])) | |
f37b21b4 | 291 | ld_canon_sysroot [--ld_canon_sysroot_len] = '\0'; |
889be5db | 292 | } |
3fe38064 NC |
293 | else |
294 | ld_canon_sysroot_len = -1; | |
295 | ||
252b5132 RH |
296 | /* Set the default BFD target based on the configured target. Doing |
297 | this permits the linker to be configured for a particular target, | |
298 | and linked against a shared BFD library which was configured for | |
299 | a different target. The macro TARGET is defined by Makefile. */ | |
0aa7f586 | 300 | if (!bfd_set_default_target (TARGET)) |
252b5132 RH |
301 | { |
302 | einfo (_("%X%P: can't set BFD default target to `%s': %E\n"), TARGET); | |
303 | xexit (1); | |
304 | } | |
305 | ||
b47c4208 AM |
306 | #if YYDEBUG |
307 | { | |
308 | extern int yydebug; | |
309 | yydebug = 1; | |
310 | } | |
311 | #endif | |
312 | ||
b34976b6 | 313 | config.build_constructors = TRUE; |
c76308d2 | 314 | config.rpath_separator = ':'; |
a854a4a7 AM |
315 | config.split_by_reloc = (unsigned) -1; |
316 | config.split_by_file = (bfd_size_type) -1; | |
3b95049e AM |
317 | config.make_executable = TRUE; |
318 | config.magic_demand_paged = TRUE; | |
319 | config.text_read_only = TRUE; | |
035801ce | 320 | config.print_map_discarded = TRUE; |
4f9d22a0 | 321 | link_info.disable_target_specific_optimizations = -1; |
3b95049e | 322 | |
b34976b6 | 323 | command_line.warn_mismatch = TRUE; |
fe7929ce | 324 | command_line.warn_search_mismatch = TRUE; |
02b0b1aa | 325 | command_line.check_section_addresses = -1; |
bcaa7b3e | 326 | |
252b5132 RH |
327 | /* We initialize DEMANGLING based on the environment variable |
328 | COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the | |
329 | output of the linker, unless COLLECT_NO_DEMANGLE is set in the | |
330 | environment. Acting the same way here lets us provide the same | |
331 | interface by default. */ | |
332 | demangling = getenv ("COLLECT_NO_DEMANGLE") == NULL; | |
333 | ||
b34976b6 | 334 | link_info.allow_undefined_version = TRUE; |
b5067602 | 335 | link_info.keep_memory = TRUE; |
b5067602 | 336 | link_info.combreloc = TRUE; |
d5cd3933 | 337 | link_info.strip_discarded = TRUE; |
3f0a5f17 | 338 | link_info.prohibit_multiple_definition_absolute = FALSE; |
b32632c4 | 339 | link_info.textrel_check = DEFAULT_LD_TEXTREL_CHECK; |
2760f24c RG |
340 | link_info.emit_hash = DEFAULT_EMIT_SYSV_HASH; |
341 | link_info.emit_gnu_hash = DEFAULT_EMIT_GNU_HASH; | |
a9a4c53e AM |
342 | link_info.callbacks = &link_callbacks; |
343 | link_info.input_bfds_tail = &link_info.input_bfds; | |
3dbf70a2 MM |
344 | /* SVR4 linkers seem to set DT_INIT and DT_FINI based on magic _init |
345 | and _fini symbols. We are compatible. */ | |
346 | link_info.init_function = "_init"; | |
347 | link_info.fini_function = "_fini"; | |
a9a4c53e | 348 | link_info.relax_pass = 1; |
889c2a67 | 349 | link_info.extern_protected_data = -1; |
aec6b87e | 350 | link_info.dynamic_undefined_weak = -1; |
e0076ab3 | 351 | link_info.pei386_auto_import = -1; |
db6751f2 | 352 | link_info.spare_dynamic_tags = 5; |
967928e9 | 353 | link_info.path_separator = ':'; |
6c3bc0f8 NC |
354 | #ifdef DEFAULT_FLAG_COMPRESS_DEBUG |
355 | link_info.compress_debug = COMPRESS_DEBUG_GABI_ZLIB; | |
356 | #endif | |
6734f10a | 357 | #ifdef DEFAULT_NEW_DTAGS |
91001320 | 358 | link_info.new_dtags = DEFAULT_NEW_DTAGS; |
6734f10a | 359 | #endif |
cae64165 | 360 | link_info.start_stop_visibility = STV_PROTECTED; |
24718e3b | 361 | |
252b5132 | 362 | ldfile_add_arch (""); |
252b5132 RH |
363 | emulation = get_emulation (argc, argv); |
364 | ldemul_choose_mode (emulation); | |
742aeb63 | 365 | default_target = ldemul_choose_target (argc, argv); |
252b5132 | 366 | lang_init (); |
18d6a79d | 367 | ldexp_init (); |
252b5132 | 368 | ldemul_before_parse (); |
b34976b6 | 369 | lang_has_input_file = FALSE; |
252b5132 RH |
370 | parse_args (argc, argv); |
371 | ||
2d643429 NC |
372 | if (config.hash_table_size != 0) |
373 | bfd_hash_set_default_size (config.hash_table_size); | |
374 | ||
0381901e | 375 | #if BFD_SUPPORTS_PLUGINS |
9bbc1a67 | 376 | /* Now all the plugin arguments have been gathered, we can load them. */ |
d82184d7 | 377 | plugin_load_plugins (); |
0381901e | 378 | #endif /* BFD_SUPPORTS_PLUGINS */ |
36af4a4e | 379 | |
9bbc1a67 | 380 | ldemul_set_symbols (); |
252b5132 | 381 | |
14be8564 L |
382 | /* If we have not already opened and parsed a linker script, |
383 | try the default script from command line first. */ | |
384 | if (saved_script_handle == NULL | |
385 | && command_line.default_script != NULL) | |
386 | { | |
6ec6968b | 387 | ldfile_open_script_file (command_line.default_script); |
14be8564 L |
388 | parser_input = input_script; |
389 | yyparse (); | |
390 | } | |
391 | ||
b9a8de1e NC |
392 | /* If we have not already opened and parsed a linker script |
393 | read the emulation's appropriate default script. */ | |
b90e1c6f | 394 | if (saved_script_handle == NULL) |
252b5132 | 395 | { |
252b5132 | 396 | int isfile; |
b7a26f91 | 397 | char *s = ldemul_get_script (&isfile); |
252b5132 RH |
398 | |
399 | if (isfile) | |
7d24f02c | 400 | ldfile_open_default_command_file (s); |
252b5132 | 401 | else |
b7a26f91 | 402 | { |
252b5132 | 403 | lex_string = s; |
dab69f68 | 404 | lex_redirect (s, _("built in linker script"), 1); |
252b5132 RH |
405 | } |
406 | parser_input = input_script; | |
407 | yyparse (); | |
408 | lex_string = NULL; | |
409 | } | |
410 | ||
cd6f1cf3 | 411 | if (verbose) |
b9a8de1e | 412 | { |
9cb61eab AM |
413 | if (saved_script_handle) |
414 | info_msg (_("using external linker script:")); | |
415 | else | |
416 | info_msg (_("using internal linker script:")); | |
417 | info_msg ("\n==================================================\n"); | |
b9a8de1e NC |
418 | |
419 | if (saved_script_handle) | |
420 | { | |
74699268 | 421 | static const int ld_bufsz = 8193; |
b9a8de1e | 422 | size_t n; |
1e9cc1c2 | 423 | char *buf = (char *) xmalloc (ld_bufsz); |
b9a8de1e NC |
424 | |
425 | rewind (saved_script_handle); | |
74699268 | 426 | while ((n = fread (buf, 1, ld_bufsz - 1, saved_script_handle)) > 0) |
b9a8de1e | 427 | { |
b7a26f91 | 428 | buf[n] = 0; |
f5ac6ab3 | 429 | info_msg ("%s", buf); |
b9a8de1e NC |
430 | } |
431 | rewind (saved_script_handle); | |
432 | free (buf); | |
433 | } | |
434 | else | |
435 | { | |
436 | int isfile; | |
437 | ||
b7a26f91 | 438 | info_msg (ldemul_get_script (&isfile)); |
b9a8de1e | 439 | } |
b7a26f91 | 440 | |
b9a8de1e NC |
441 | info_msg ("\n==================================================\n"); |
442 | } | |
443 | ||
7bdf4127 AB |
444 | if (command_line.force_group_allocation |
445 | || !bfd_link_relocatable (&link_info)) | |
446 | link_info.resolve_section_groups = TRUE; | |
447 | else | |
448 | link_info.resolve_section_groups = FALSE; | |
449 | ||
30824704 RM |
450 | if (command_line.print_output_format) |
451 | info_msg ("%s\n", lang_get_output_target ()); | |
452 | ||
252b5132 RH |
453 | lang_final (); |
454 | ||
61e2488c JT |
455 | /* If the only command line argument has been -v or --version or --verbose |
456 | then ignore any input files provided by linker scripts and exit now. | |
457 | We do not want to create an output file when the linker is just invoked | |
458 | to provide version information. */ | |
459 | if (argc == 2 && version_printed) | |
460 | xexit (0); | |
461 | ||
a4819f54 | 462 | if (link_info.inhibit_common_definition && !bfd_link_dll (&link_info)) |
df5f2391 | 463 | einfo (_("%F%P: --no-define-common may not be used without -shared\n")); |
a4819f54 | 464 | |
b34976b6 | 465 | if (!lang_has_input_file) |
252b5132 | 466 | { |
30824704 | 467 | if (version_printed || command_line.print_output_format) |
252b5132 | 468 | xexit (0); |
df5f2391 | 469 | einfo (_("%F%P: no input files\n")); |
252b5132 RH |
470 | } |
471 | ||
5c87f94b | 472 | if (verbose) |
0125cdf2 | 473 | info_msg (_("%P: mode %s\n"), emulation); |
252b5132 RH |
474 | |
475 | ldemul_after_parse (); | |
476 | ||
252b5132 RH |
477 | if (config.map_filename) |
478 | { | |
479 | if (strcmp (config.map_filename, "-") == 0) | |
480 | { | |
481 | config.map_file = stdout; | |
482 | } | |
483 | else | |
484 | { | |
485 | config.map_file = fopen (config.map_filename, FOPEN_WT); | |
486 | if (config.map_file == (FILE *) NULL) | |
487 | { | |
488 | bfd_set_error (bfd_error_system_call); | |
df5f2391 | 489 | einfo (_("%F%P: cannot open map file %s: %E\n"), |
252b5132 RH |
490 | config.map_filename); |
491 | } | |
492 | } | |
d2ef37eb | 493 | link_info.has_map_file = TRUE; |
252b5132 RH |
494 | } |
495 | ||
252b5132 RH |
496 | lang_process (); |
497 | ||
498 | /* Print error messages for any missing symbols, for any warning | |
6d5e62f8 | 499 | symbols, and possibly multiple definitions. */ |
0e1862bb | 500 | if (bfd_link_relocatable (&link_info)) |
f13a99db | 501 | link_info.output_bfd->flags &= ~EXEC_P; |
252b5132 | 502 | else |
f13a99db | 503 | link_info.output_bfd->flags |= EXEC_P; |
252b5132 | 504 | |
0ce398f1 L |
505 | if ((link_info.compress_debug & COMPRESS_DEBUG)) |
506 | { | |
507 | link_info.output_bfd->flags |= BFD_COMPRESS; | |
508 | if (link_info.compress_debug == COMPRESS_DEBUG_GABI_ZLIB) | |
509 | link_info.output_bfd->flags |= BFD_COMPRESS_GABI; | |
510 | } | |
511 | ||
252b5132 RH |
512 | ldwrite (); |
513 | ||
514 | if (config.map_file != NULL) | |
515 | lang_map (); | |
516 | if (command_line.cref) | |
517 | output_cref (config.map_file != NULL ? config.map_file : stdout); | |
518 | if (nocrossref_list != NULL) | |
519 | check_nocrossrefs (); | |
3604cb1f TG |
520 | if (command_line.print_memory_usage) |
521 | lang_print_memory_usage (); | |
edf84efc NC |
522 | #if 0 |
523 | { | |
0aa7f586 | 524 | struct bfd_link_hash_entry *h; |
252b5132 | 525 | |
edf84efc NC |
526 | h = bfd_link_hash_lookup (link_info.hash, "__image_base__", 0,0,1); |
527 | fprintf (stderr, "lookup = %p val %lx\n", h, h ? h->u.def.value : 1); | |
528 | } | |
529 | #endif | |
18d6a79d | 530 | ldexp_finish (); |
750877ba L |
531 | lang_finish (); |
532 | ||
f37b21b4 RM |
533 | if (config.dependency_file != NULL) |
534 | write_dependency_file (); | |
535 | ||
1049f94e | 536 | /* Even if we're producing relocatable output, some non-fatal errors should |
252b5132 | 537 | be reported in the exit status. (What non-fatal errors, if any, do we |
1049f94e | 538 | want to ignore for relocatable output?) */ |
b34976b6 | 539 | if (!config.make_executable && !force_make_executable) |
252b5132 | 540 | { |
5c87f94b | 541 | if (verbose) |
0125cdf2 NC |
542 | einfo (_("%P: link errors found, deleting executable `%s'\n"), |
543 | output_filename); | |
252b5132 | 544 | |
4309cbf2 | 545 | /* The file will be removed by ld_cleanup. */ |
252b5132 RH |
546 | xexit (1); |
547 | } | |
548 | else | |
549 | { | |
0aa7f586 | 550 | if (!bfd_close (link_info.output_bfd)) |
df5f2391 | 551 | einfo (_("%F%P: %pB: final close failed: %E\n"), link_info.output_bfd); |
252b5132 RH |
552 | |
553 | /* If the --force-exe-suffix is enabled, and we're making an | |
6d5e62f8 KH |
554 | executable file and it doesn't end in .exe, copy it to one |
555 | which does. */ | |
0e1862bb L |
556 | if (!bfd_link_relocatable (&link_info) |
557 | && command_line.force_exe_suffix) | |
252b5132 RH |
558 | { |
559 | int len = strlen (output_filename); | |
0125cdf2 | 560 | |
6d5e62f8 | 561 | if (len < 4 |
252b5132 RH |
562 | || (strcasecmp (output_filename + len - 4, ".exe") != 0 |
563 | && strcasecmp (output_filename + len - 4, ".dll") != 0)) | |
564 | { | |
565 | FILE *src; | |
566 | FILE *dst; | |
567 | const int bsize = 4096; | |
1e9cc1c2 | 568 | char *buf = (char *) xmalloc (bsize); |
252b5132 | 569 | int l; |
1e9cc1c2 | 570 | char *dst_name = (char *) xmalloc (len + 5); |
0125cdf2 | 571 | |
252b5132 RH |
572 | strcpy (dst_name, output_filename); |
573 | strcat (dst_name, ".exe"); | |
574 | src = fopen (output_filename, FOPEN_RB); | |
575 | dst = fopen (dst_name, FOPEN_WB); | |
576 | ||
577 | if (!src) | |
df5f2391 | 578 | einfo (_("%F%P: unable to open for source of copy `%s'\n"), |
1579bae1 | 579 | output_filename); |
252b5132 | 580 | if (!dst) |
df5f2391 | 581 | einfo (_("%F%P: unable to open for destination of copy `%s'\n"), |
1579bae1 | 582 | dst_name); |
252b5132 RH |
583 | while ((l = fread (buf, 1, bsize, src)) > 0) |
584 | { | |
585 | int done = fwrite (buf, 1, l, dst); | |
0125cdf2 | 586 | |
252b5132 | 587 | if (done != l) |
df5f2391 | 588 | einfo (_("%P: error writing file `%s'\n"), dst_name); |
252b5132 | 589 | } |
0125cdf2 | 590 | |
252b5132 RH |
591 | fclose (src); |
592 | if (fclose (dst) == EOF) | |
df5f2391 | 593 | einfo (_("%P: error closing file `%s'\n"), dst_name); |
252b5132 RH |
594 | free (dst_name); |
595 | free (buf); | |
596 | } | |
597 | } | |
598 | } | |
599 | ||
600 | END_PROGRESS (program_name); | |
601 | ||
602 | if (config.stats) | |
603 | { | |
252b5132 RH |
604 | long run_time = get_run_time () - start_time; |
605 | ||
e922bcab | 606 | fflush (stdout); |
252b5132 RH |
607 | fprintf (stderr, _("%s: total time in link: %ld.%06ld\n"), |
608 | program_name, run_time / 1000000, run_time % 1000000); | |
e922bcab | 609 | fflush (stderr); |
252b5132 RH |
610 | } |
611 | ||
4309cbf2 | 612 | /* Prevent ld_cleanup from doing anything, after a successful link. */ |
252b5132 RH |
613 | output_filename = NULL; |
614 | ||
615 | xexit (0); | |
616 | return 0; | |
617 | } | |
618 | ||
e2243057 RS |
619 | /* If the configured sysroot is relocatable, try relocating it based on |
620 | default prefix FROM. Return the relocated directory if it exists, | |
621 | otherwise return null. */ | |
622 | ||
623 | static char * | |
624 | get_relative_sysroot (const char *from ATTRIBUTE_UNUSED) | |
625 | { | |
626 | #ifdef TARGET_SYSTEM_ROOT_RELOCATABLE | |
627 | char *path; | |
628 | struct stat s; | |
629 | ||
630 | path = make_relative_prefix (program_name, from, TARGET_SYSTEM_ROOT); | |
631 | if (path) | |
632 | { | |
633 | if (stat (path, &s) == 0 && S_ISDIR (s.st_mode)) | |
634 | return path; | |
635 | free (path); | |
636 | } | |
637 | #endif | |
638 | return 0; | |
639 | } | |
640 | ||
641 | /* Return the sysroot directory. Return "" if no sysroot is being used. */ | |
642 | ||
643 | static const char * | |
644 | get_sysroot (int argc, char **argv) | |
645 | { | |
646 | int i; | |
55d5520a | 647 | const char *path = NULL; |
e2243057 RS |
648 | |
649 | for (i = 1; i < argc; i++) | |
0112cd26 | 650 | if (CONST_STRNEQ (argv[i], "--sysroot=")) |
55d5520a | 651 | path = argv[i] + strlen ("--sysroot="); |
e2243057 | 652 | |
55d5520a AM |
653 | if (!path) |
654 | path = get_relative_sysroot (BINDIR); | |
e2243057 | 655 | |
55d5520a AM |
656 | if (!path) |
657 | path = get_relative_sysroot (TOOLBINDIR); | |
658 | ||
659 | if (!path) | |
660 | path = TARGET_SYSTEM_ROOT; | |
661 | ||
662 | if (IS_DIR_SEPARATOR (*path) && path[1] == 0) | |
663 | path = ""; | |
e2243057 | 664 | |
55d5520a | 665 | return path; |
e2243057 RS |
666 | } |
667 | ||
252b5132 RH |
668 | /* We need to find any explicitly given emulation in order to initialize the |
669 | state that's needed by the lex&yacc argument parser (parse_args). */ | |
670 | ||
671 | static char * | |
1579bae1 | 672 | get_emulation (int argc, char **argv) |
252b5132 RH |
673 | { |
674 | char *emulation; | |
675 | int i; | |
676 | ||
677 | emulation = getenv (EMULATION_ENVIRON); | |
678 | if (emulation == NULL) | |
679 | emulation = DEFAULT_EMULATION; | |
680 | ||
681 | for (i = 1; i < argc; i++) | |
682 | { | |
0112cd26 | 683 | if (CONST_STRNEQ (argv[i], "-m")) |
252b5132 RH |
684 | { |
685 | if (argv[i][2] == '\0') | |
686 | { | |
687 | /* -m EMUL */ | |
688 | if (i < argc - 1) | |
689 | { | |
690 | emulation = argv[i + 1]; | |
691 | i++; | |
692 | } | |
693 | else | |
df5f2391 | 694 | einfo (_("%F%P: missing argument to -m\n")); |
252b5132 RH |
695 | } |
696 | else if (strcmp (argv[i], "-mips1") == 0 | |
697 | || strcmp (argv[i], "-mips2") == 0 | |
698 | || strcmp (argv[i], "-mips3") == 0 | |
d1cf510e | 699 | || strcmp (argv[i], "-mips4") == 0 |
6f33421c CD |
700 | || strcmp (argv[i], "-mips5") == 0 |
701 | || strcmp (argv[i], "-mips32") == 0 | |
702 | || strcmp (argv[i], "-mips32r2") == 0 | |
c0f6e439 MJ |
703 | || strcmp (argv[i], "-mips32r3") == 0 |
704 | || strcmp (argv[i], "-mips32r5") == 0 | |
7361da2c | 705 | || strcmp (argv[i], "-mips32r6") == 0 |
5f74bc13 | 706 | || strcmp (argv[i], "-mips64") == 0 |
7361da2c | 707 | || strcmp (argv[i], "-mips64r2") == 0 |
c0f6e439 MJ |
708 | || strcmp (argv[i], "-mips64r3") == 0 |
709 | || strcmp (argv[i], "-mips64r5") == 0 | |
7361da2c | 710 | || strcmp (argv[i], "-mips64r6") == 0) |
252b5132 | 711 | { |
31d677f9 | 712 | /* FIXME: The arguments -mips1, -mips2, -mips3, etc. are |
252b5132 RH |
713 | passed to the linker by some MIPS compilers. They |
714 | generally tell the linker to use a slightly different | |
715 | library path. Perhaps someday these should be | |
716 | implemented as emulations; until then, we just ignore | |
717 | the arguments and hope that nobody ever creates | |
718 | emulations named ips1, ips2 or ips3. */ | |
719 | } | |
720 | else if (strcmp (argv[i], "-m486") == 0) | |
721 | { | |
722 | /* FIXME: The argument -m486 is passed to the linker on | |
723 | some Linux systems. Hope that nobody creates an | |
724 | emulation named 486. */ | |
725 | } | |
726 | else | |
727 | { | |
728 | /* -mEMUL */ | |
729 | emulation = &argv[i][2]; | |
730 | } | |
731 | } | |
732 | } | |
733 | ||
734 | return emulation; | |
735 | } | |
736 | ||
252b5132 | 737 | void |
1579bae1 | 738 | add_ysym (const char *name) |
252b5132 | 739 | { |
1579bae1 | 740 | if (link_info.notice_hash == NULL) |
252b5132 | 741 | { |
0aa7f586 AM |
742 | link_info.notice_hash |
743 | = (struct bfd_hash_table *) xmalloc (sizeof (struct bfd_hash_table)); | |
66eb6687 AM |
744 | if (!bfd_hash_table_init_n (link_info.notice_hash, |
745 | bfd_hash_newfunc, | |
746 | sizeof (struct bfd_hash_entry), | |
747 | 61)) | |
df5f2391 | 748 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); |
6d5e62f8 | 749 | } |
252b5132 | 750 | |
1579bae1 | 751 | if (bfd_hash_lookup (link_info.notice_hash, name, TRUE, TRUE) == NULL) |
df5f2391 | 752 | einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); |
252b5132 RH |
753 | } |
754 | ||
0e86e20e AM |
755 | void |
756 | add_ignoresym (struct bfd_link_info *info, const char *name) | |
757 | { | |
758 | if (info->ignore_hash == NULL) | |
759 | { | |
760 | info->ignore_hash = xmalloc (sizeof (struct bfd_hash_table)); | |
0aa7f586 AM |
761 | if (!bfd_hash_table_init_n (info->ignore_hash, |
762 | bfd_hash_newfunc, | |
763 | sizeof (struct bfd_hash_entry), | |
764 | 61)) | |
df5f2391 | 765 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); |
0e86e20e AM |
766 | } |
767 | ||
768 | if (bfd_hash_lookup (info->ignore_hash, name, TRUE, TRUE) == NULL) | |
df5f2391 | 769 | einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); |
0e86e20e AM |
770 | } |
771 | ||
252b5132 RH |
772 | /* Record a symbol to be wrapped, from the --wrap option. */ |
773 | ||
774 | void | |
1579bae1 | 775 | add_wrap (const char *name) |
252b5132 RH |
776 | { |
777 | if (link_info.wrap_hash == NULL) | |
778 | { | |
0aa7f586 AM |
779 | link_info.wrap_hash |
780 | = (struct bfd_hash_table *) xmalloc (sizeof (struct bfd_hash_table)); | |
66eb6687 AM |
781 | if (!bfd_hash_table_init_n (link_info.wrap_hash, |
782 | bfd_hash_newfunc, | |
783 | sizeof (struct bfd_hash_entry), | |
784 | 61)) | |
df5f2391 | 785 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); |
252b5132 | 786 | } |
0125cdf2 | 787 | |
b34976b6 | 788 | if (bfd_hash_lookup (link_info.wrap_hash, name, TRUE, TRUE) == NULL) |
df5f2391 | 789 | einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); |
252b5132 RH |
790 | } |
791 | ||
792 | /* Handle the -retain-symbols-file option. */ | |
793 | ||
794 | void | |
1579bae1 | 795 | add_keepsyms_file (const char *filename) |
252b5132 RH |
796 | { |
797 | FILE *file; | |
798 | char *buf; | |
799 | size_t bufsize; | |
800 | int c; | |
801 | ||
802 | if (link_info.strip == strip_some) | |
803 | einfo (_("%X%P: error: duplicate retain-symbols-file\n")); | |
804 | ||
805 | file = fopen (filename, "r"); | |
1579bae1 | 806 | if (file == NULL) |
252b5132 RH |
807 | { |
808 | bfd_set_error (bfd_error_system_call); | |
809 | einfo ("%X%P: %s: %E\n", filename); | |
810 | return; | |
811 | } | |
812 | ||
1e9cc1c2 NC |
813 | link_info.keep_hash = (struct bfd_hash_table *) |
814 | xmalloc (sizeof (struct bfd_hash_table)); | |
66eb6687 AM |
815 | if (!bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc, |
816 | sizeof (struct bfd_hash_entry))) | |
df5f2391 | 817 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); |
252b5132 RH |
818 | |
819 | bufsize = 100; | |
1e9cc1c2 | 820 | buf = (char *) xmalloc (bufsize); |
252b5132 RH |
821 | |
822 | c = getc (file); | |
823 | while (c != EOF) | |
824 | { | |
3882b010 | 825 | while (ISSPACE (c)) |
252b5132 RH |
826 | c = getc (file); |
827 | ||
828 | if (c != EOF) | |
829 | { | |
830 | size_t len = 0; | |
831 | ||
0aa7f586 | 832 | while (!ISSPACE (c) && c != EOF) |
252b5132 RH |
833 | { |
834 | buf[len] = c; | |
835 | ++len; | |
836 | if (len >= bufsize) | |
837 | { | |
838 | bufsize *= 2; | |
1e9cc1c2 | 839 | buf = (char *) xrealloc (buf, bufsize); |
252b5132 RH |
840 | } |
841 | c = getc (file); | |
842 | } | |
843 | ||
844 | buf[len] = '\0'; | |
845 | ||
1579bae1 | 846 | if (bfd_hash_lookup (link_info.keep_hash, buf, TRUE, TRUE) == NULL) |
df5f2391 | 847 | einfo (_("%F%P: bfd_hash_lookup for insertion failed: %E\n")); |
252b5132 RH |
848 | } |
849 | } | |
850 | ||
851 | if (link_info.strip != strip_none) | |
852 | einfo (_("%P: `-retain-symbols-file' overrides `-s' and `-S'\n")); | |
853 | ||
5ed6aba4 | 854 | free (buf); |
252b5132 | 855 | link_info.strip = strip_some; |
d9313f4f | 856 | fclose (file); |
252b5132 RH |
857 | } |
858 | \f | |
859 | /* Callbacks from the BFD linker routines. */ | |
860 | ||
861 | /* This is called when BFD has decided to include an archive member in | |
862 | a link. */ | |
863 | ||
b34976b6 | 864 | static bfd_boolean |
e1fffbe6 | 865 | add_archive_element (struct bfd_link_info *info, |
1579bae1 | 866 | bfd *abfd, |
5d3236ee DK |
867 | const char *name, |
868 | bfd **subsbfd ATTRIBUTE_UNUSED) | |
252b5132 RH |
869 | { |
870 | lang_input_statement_type *input; | |
1fa4ec6a | 871 | lang_input_statement_type *parent; |
5d3236ee | 872 | lang_input_statement_type orig_input; |
252b5132 | 873 | |
1e9cc1c2 NC |
874 | input = (lang_input_statement_type *) |
875 | xcalloc (1, sizeof (lang_input_statement_type)); | |
fb47deda | 876 | input->header.type = lang_input_statement_enum; |
607b4833 AM |
877 | input->filename = bfd_get_filename (abfd); |
878 | input->local_sym_name = bfd_get_filename (abfd); | |
252b5132 | 879 | input->the_bfd = abfd; |
252b5132 | 880 | |
5d3236ee DK |
881 | /* Save the original data for trace files/tries below, as plugins |
882 | (if enabled) may possibly alter it to point to a replacement | |
883 | BFD, but we still want to output the original BFD filename. */ | |
884 | orig_input = *input; | |
0381901e | 885 | #if BFD_SUPPORTS_PLUGINS |
b95a0a31 | 886 | if (link_info.lto_plugin_active) |
5d3236ee DK |
887 | { |
888 | /* We must offer this archive member to the plugins to claim. */ | |
35a1e5f3 L |
889 | plugin_maybe_claim (input); |
890 | if (input->flags.claimed) | |
5d3236ee | 891 | { |
b95a0a31 L |
892 | if (no_more_claiming) |
893 | { | |
894 | /* Don't claim new IR symbols after all IR symbols have | |
895 | been claimed. */ | |
5c87f94b | 896 | if (verbose) |
6e0c75f7 | 897 | info_msg ("%pI: no new IR symbols to claim\n", |
b95a0a31 L |
898 | &orig_input); |
899 | input->flags.claimed = 0; | |
900 | return FALSE; | |
901 | } | |
35a1e5f3 L |
902 | input->flags.claim_archive = TRUE; |
903 | *subsbfd = input->the_bfd; | |
5d3236ee DK |
904 | } |
905 | } | |
0381901e | 906 | #endif /* BFD_SUPPORTS_PLUGINS */ |
5d3236ee | 907 | |
9221725d AM |
908 | if (link_info.input_bfds_tail == &input->the_bfd->link.next |
909 | || input->the_bfd->link.next != NULL) | |
910 | { | |
911 | /* We have already loaded this element, and are attempting to | |
912 | load it again. This can happen when the archive map doesn't | |
913 | match actual symbols defined by the element. */ | |
914 | free (input); | |
915 | bfd_set_error (bfd_error_malformed_archive); | |
916 | return FALSE; | |
917 | } | |
918 | ||
919 | /* Set the file_chain pointer of archives to the last element loaded | |
920 | from the archive. See ldlang.c:find_rescan_insertion. */ | |
921 | parent = bfd_usrdata (abfd->my_archive); | |
922 | if (parent != NULL && !parent->flags.reload) | |
923 | parent->next = input; | |
924 | ||
252b5132 RH |
925 | ldlang_add_file (input); |
926 | ||
1579bae1 | 927 | if (config.map_file != NULL) |
252b5132 | 928 | { |
b34976b6 | 929 | static bfd_boolean header_printed; |
252b5132 RH |
930 | struct bfd_link_hash_entry *h; |
931 | bfd *from; | |
932 | int len; | |
933 | ||
e1fffbe6 | 934 | h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); |
aa654ee8 AM |
935 | if (h == NULL |
936 | && info->pei386_auto_import | |
937 | && CONST_STRNEQ (name, "__imp_")) | |
938 | h = bfd_link_hash_lookup (info->hash, name + 6, FALSE, FALSE, TRUE); | |
252b5132 RH |
939 | |
940 | if (h == NULL) | |
941 | from = NULL; | |
942 | else | |
943 | { | |
944 | switch (h->type) | |
945 | { | |
946 | default: | |
947 | from = NULL; | |
948 | break; | |
949 | ||
950 | case bfd_link_hash_defined: | |
951 | case bfd_link_hash_defweak: | |
952 | from = h->u.def.section->owner; | |
953 | break; | |
954 | ||
955 | case bfd_link_hash_undefined: | |
956 | case bfd_link_hash_undefweak: | |
957 | from = h->u.undef.abfd; | |
958 | break; | |
959 | ||
960 | case bfd_link_hash_common: | |
961 | from = h->u.c.p->section->owner; | |
962 | break; | |
963 | } | |
964 | } | |
965 | ||
0aa7f586 | 966 | if (!header_printed) |
252b5132 | 967 | { |
1273da04 | 968 | minfo (_("Archive member included to satisfy reference by file (symbol)\n\n")); |
b34976b6 | 969 | header_printed = TRUE; |
252b5132 RH |
970 | } |
971 | ||
3860d2b4 AM |
972 | if (abfd->my_archive == NULL |
973 | || bfd_is_thin_archive (abfd->my_archive)) | |
252b5132 RH |
974 | { |
975 | minfo ("%s", bfd_get_filename (abfd)); | |
976 | len = strlen (bfd_get_filename (abfd)); | |
977 | } | |
978 | else | |
979 | { | |
3860d2b4 | 980 | minfo ("%s(%s)", bfd_get_filename (abfd->my_archive), |
252b5132 | 981 | bfd_get_filename (abfd)); |
3860d2b4 | 982 | len = (strlen (bfd_get_filename (abfd->my_archive)) |
252b5132 RH |
983 | + strlen (bfd_get_filename (abfd)) |
984 | + 2); | |
985 | } | |
986 | ||
987 | if (len >= 29) | |
988 | { | |
989 | print_nl (); | |
990 | len = 0; | |
991 | } | |
992 | while (len < 30) | |
993 | { | |
994 | print_space (); | |
995 | ++len; | |
996 | } | |
997 | ||
998 | if (from != NULL) | |
871b3ab2 | 999 | minfo ("%pB ", from); |
252b5132 | 1000 | if (h != NULL) |
c1c8c1ef | 1001 | minfo ("(%pT)\n", h->root.string); |
252b5132 RH |
1002 | else |
1003 | minfo ("(%s)\n", name); | |
1004 | } | |
1005 | ||
727a29ba AM |
1006 | if (verbose |
1007 | || trace_files > 1 | |
1008 | || (trace_files && bfd_is_thin_archive (orig_input.the_bfd->my_archive))) | |
c1c8c1ef | 1009 | info_msg ("%pI\n", &orig_input); |
b34976b6 | 1010 | return TRUE; |
252b5132 RH |
1011 | } |
1012 | ||
1013 | /* This is called when BFD has discovered a symbol which is defined | |
1014 | multiple times. */ | |
1015 | ||
1a72702b | 1016 | static void |
24f58f47 AM |
1017 | multiple_definition (struct bfd_link_info *info, |
1018 | struct bfd_link_hash_entry *h, | |
1579bae1 AM |
1019 | bfd *nbfd, |
1020 | asection *nsec, | |
1021 | bfd_vma nval) | |
252b5132 | 1022 | { |
24f58f47 AM |
1023 | const char *name; |
1024 | bfd *obfd; | |
1025 | asection *osec; | |
1026 | bfd_vma oval; | |
1027 | ||
1028 | if (info->allow_multiple_definition) | |
1a72702b | 1029 | return; |
24f58f47 AM |
1030 | |
1031 | switch (h->type) | |
1032 | { | |
1033 | case bfd_link_hash_defined: | |
1034 | osec = h->u.def.section; | |
1035 | oval = h->u.def.value; | |
1036 | obfd = h->u.def.section->owner; | |
1037 | break; | |
1038 | case bfd_link_hash_indirect: | |
1039 | osec = bfd_ind_section_ptr; | |
1040 | oval = 0; | |
1041 | obfd = NULL; | |
1042 | break; | |
1043 | default: | |
1044 | abort (); | |
1045 | } | |
1046 | ||
1047 | /* Ignore a redefinition of an absolute symbol to the | |
1048 | same value; it's harmless. */ | |
1049 | if (h->type == bfd_link_hash_defined | |
1050 | && bfd_is_abs_section (osec) | |
1051 | && bfd_is_abs_section (nsec) | |
1052 | && nval == oval) | |
1a72702b | 1053 | return; |
24f58f47 | 1054 | |
252b5132 RH |
1055 | /* If either section has the output_section field set to |
1056 | bfd_abs_section_ptr, it means that the section is being | |
1057 | discarded, and this is not really a multiple definition at all. | |
9e2278f5 AM |
1058 | FIXME: It would be cleaner to somehow ignore symbols defined in |
1059 | sections which are being discarded. */ | |
3f0a5f17 ME |
1060 | if (!info->prohibit_multiple_definition_absolute |
1061 | && ((osec->output_section != NULL | |
1062 | && ! bfd_is_abs_section (osec) | |
1063 | && bfd_is_abs_section (osec->output_section)) | |
1064 | || (nsec->output_section != NULL | |
1065 | && !bfd_is_abs_section (nsec) | |
1066 | && bfd_is_abs_section (nsec->output_section)))) | |
1a72702b | 1067 | return; |
252b5132 | 1068 | |
24f58f47 AM |
1069 | name = h->root.string; |
1070 | if (nbfd == NULL) | |
1071 | { | |
1072 | nbfd = obfd; | |
1073 | nsec = osec; | |
1074 | nval = oval; | |
1075 | obfd = NULL; | |
1076 | } | |
df5f2391 | 1077 | einfo (_("%X%P: %C: multiple definition of `%pT'"), |
252b5132 | 1078 | nbfd, nsec, nval, name); |
1579bae1 | 1079 | if (obfd != NULL) |
df5f2391 AM |
1080 | einfo (_("; %D: first defined here"), obfd, osec, oval); |
1081 | einfo ("\n"); | |
9b14b192 | 1082 | |
13761a11 | 1083 | if (RELAXATION_ENABLED_BY_USER) |
9b14b192 | 1084 | { |
df5f2391 | 1085 | einfo (_("%P: disabling relaxation; it will not work with multiple definitions\n")); |
13761a11 | 1086 | DISABLE_RELAXATION; |
9b14b192 | 1087 | } |
252b5132 RH |
1088 | } |
1089 | ||
1090 | /* This is called when there is a definition of a common symbol, or | |
1091 | when a common symbol is found for a symbol that is already defined, | |
1092 | or when two common symbols are found. We only do something if | |
1093 | -warn-common was used. */ | |
1094 | ||
1a72702b | 1095 | static void |
1579bae1 | 1096 | multiple_common (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
24f58f47 | 1097 | struct bfd_link_hash_entry *h, |
1579bae1 AM |
1098 | bfd *nbfd, |
1099 | enum bfd_link_hash_type ntype, | |
1100 | bfd_vma nsize) | |
252b5132 | 1101 | { |
24f58f47 AM |
1102 | const char *name; |
1103 | bfd *obfd; | |
1104 | enum bfd_link_hash_type otype; | |
1105 | bfd_vma osize; | |
1106 | ||
1107 | if (!config.warn_common) | |
1a72702b | 1108 | return; |
252b5132 | 1109 | |
24f58f47 AM |
1110 | name = h->root.string; |
1111 | otype = h->type; | |
1112 | if (otype == bfd_link_hash_common) | |
1113 | { | |
1114 | obfd = h->u.c.p->section->owner; | |
1115 | osize = h->u.c.size; | |
1116 | } | |
1117 | else if (otype == bfd_link_hash_defined | |
1118 | || otype == bfd_link_hash_defweak) | |
1119 | { | |
1120 | obfd = h->u.def.section->owner; | |
1121 | osize = 0; | |
1122 | } | |
1123 | else | |
1124 | { | |
1125 | /* FIXME: It would nice if we could report the BFD which defined | |
1126 | an indirect symbol, but we don't have anywhere to store the | |
1127 | information. */ | |
1128 | obfd = NULL; | |
1129 | osize = 0; | |
1130 | } | |
1131 | ||
252b5132 RH |
1132 | if (ntype == bfd_link_hash_defined |
1133 | || ntype == bfd_link_hash_defweak | |
1134 | || ntype == bfd_link_hash_indirect) | |
1135 | { | |
1136 | ASSERT (otype == bfd_link_hash_common); | |
252b5132 | 1137 | if (obfd != NULL) |
df5f2391 AM |
1138 | einfo (_("%P: %pB: warning: definition of `%pT' overriding common" |
1139 | " from %pB\n"), | |
1140 | nbfd, name, obfd); | |
1141 | else | |
1142 | einfo (_("%P: %pB: warning: definition of `%pT' overriding common\n"), | |
1143 | nbfd, name); | |
252b5132 RH |
1144 | } |
1145 | else if (otype == bfd_link_hash_defined | |
1146 | || otype == bfd_link_hash_defweak | |
1147 | || otype == bfd_link_hash_indirect) | |
1148 | { | |
1149 | ASSERT (ntype == bfd_link_hash_common); | |
252b5132 | 1150 | if (obfd != NULL) |
df5f2391 AM |
1151 | einfo (_("%P: %pB: warning: common of `%pT' overridden by definition" |
1152 | " from %pB\n"), | |
1153 | nbfd, name, obfd); | |
1154 | else | |
1155 | einfo (_("%P: %pB: warning: common of `%pT' overridden by definition\n"), | |
1156 | nbfd, name); | |
252b5132 RH |
1157 | } |
1158 | else | |
1159 | { | |
1160 | ASSERT (otype == bfd_link_hash_common && ntype == bfd_link_hash_common); | |
1161 | if (osize > nsize) | |
1162 | { | |
252b5132 | 1163 | if (obfd != NULL) |
df5f2391 AM |
1164 | einfo (_("%P: %pB: warning: common of `%pT' overridden" |
1165 | " by larger common from %pB\n"), | |
1166 | nbfd, name, obfd); | |
1167 | else | |
1168 | einfo (_("%P: %pB: warning: common of `%pT' overridden" | |
1169 | " by larger common\n"), | |
1170 | nbfd, name); | |
252b5132 RH |
1171 | } |
1172 | else if (nsize > osize) | |
1173 | { | |
252b5132 | 1174 | if (obfd != NULL) |
df5f2391 AM |
1175 | einfo (_("%P: %pB: warning: common of `%pT' overriding" |
1176 | " smaller common from %pB\n"), | |
1177 | nbfd, name, obfd); | |
1178 | else | |
1179 | einfo (_("%P: %pB: warning: common of `%pT' overriding" | |
1180 | " smaller common\n"), | |
1181 | nbfd, name); | |
252b5132 RH |
1182 | } |
1183 | else | |
1184 | { | |
252b5132 | 1185 | if (obfd != NULL) |
df5f2391 AM |
1186 | einfo (_("%P: %pB and %pB: warning: multiple common of `%pT'\n"), |
1187 | nbfd, obfd, name); | |
1188 | else | |
1189 | einfo (_("%P: %pB: warning: multiple common of `%pT'\n"), | |
1190 | nbfd, name); | |
252b5132 RH |
1191 | } |
1192 | } | |
252b5132 RH |
1193 | } |
1194 | ||
1195 | /* This is called when BFD has discovered a set element. H is the | |
1196 | entry in the linker hash table for the set. SECTION and VALUE | |
1197 | represent a value which should be added to the set. */ | |
1198 | ||
1a72702b | 1199 | static void |
1579bae1 AM |
1200 | add_to_set (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1201 | struct bfd_link_hash_entry *h, | |
1202 | bfd_reloc_code_real_type reloc, | |
1203 | bfd *abfd, | |
1204 | asection *section, | |
1205 | bfd_vma value) | |
252b5132 RH |
1206 | { |
1207 | if (config.warn_constructors) | |
1208 | einfo (_("%P: warning: global constructor %s used\n"), | |
1209 | h->root.string); | |
1210 | ||
0aa7f586 | 1211 | if (!config.build_constructors) |
1a72702b | 1212 | return; |
252b5132 | 1213 | |
1579bae1 | 1214 | ldctor_add_set_entry (h, reloc, NULL, section, value); |
252b5132 RH |
1215 | |
1216 | if (h->type == bfd_link_hash_new) | |
1217 | { | |
1218 | h->type = bfd_link_hash_undefined; | |
1219 | h->u.undef.abfd = abfd; | |
1220 | /* We don't call bfd_link_add_undef to add this to the list of | |
1221 | undefined symbols because we are going to define it | |
1222 | ourselves. */ | |
1223 | } | |
252b5132 RH |
1224 | } |
1225 | ||
1226 | /* This is called when BFD has discovered a constructor. This is only | |
1227 | called for some object file formats--those which do not handle | |
1228 | constructors in some more clever fashion. This is similar to | |
1229 | adding an element to a set, but less general. */ | |
1230 | ||
1a72702b | 1231 | static void |
1579bae1 AM |
1232 | constructor_callback (struct bfd_link_info *info, |
1233 | bfd_boolean constructor, | |
1234 | const char *name, | |
1235 | bfd *abfd, | |
1236 | asection *section, | |
1237 | bfd_vma value) | |
252b5132 RH |
1238 | { |
1239 | char *s; | |
1240 | struct bfd_link_hash_entry *h; | |
1241 | char set_name[1 + sizeof "__CTOR_LIST__"]; | |
1242 | ||
1243 | if (config.warn_constructors) | |
1244 | einfo (_("%P: warning: global constructor %s used\n"), name); | |
1245 | ||
0aa7f586 | 1246 | if (!config.build_constructors) |
1a72702b | 1247 | return; |
252b5132 RH |
1248 | |
1249 | /* Ensure that BFD_RELOC_CTOR exists now, so that we can give a | |
1250 | useful error message. */ | |
0e86e20e | 1251 | if (bfd_reloc_type_lookup (info->output_bfd, BFD_RELOC_CTOR) == NULL |
0e1862bb | 1252 | && (bfd_link_relocatable (info) |
252b5132 | 1253 | || bfd_reloc_type_lookup (abfd, BFD_RELOC_CTOR) == NULL)) |
df5f2391 | 1254 | einfo (_("%F%P: BFD backend error: BFD_RELOC_CTOR unsupported\n")); |
252b5132 RH |
1255 | |
1256 | s = set_name; | |
1257 | if (bfd_get_symbol_leading_char (abfd) != '\0') | |
1258 | *s++ = bfd_get_symbol_leading_char (abfd); | |
1259 | if (constructor) | |
1260 | strcpy (s, "__CTOR_LIST__"); | |
1261 | else | |
1262 | strcpy (s, "__DTOR_LIST__"); | |
1263 | ||
b34976b6 | 1264 | h = bfd_link_hash_lookup (info->hash, set_name, TRUE, TRUE, TRUE); |
252b5132 | 1265 | if (h == (struct bfd_link_hash_entry *) NULL) |
df5f2391 | 1266 | einfo (_("%F%P: bfd_link_hash_lookup failed: %E\n")); |
252b5132 RH |
1267 | if (h->type == bfd_link_hash_new) |
1268 | { | |
1269 | h->type = bfd_link_hash_undefined; | |
1270 | h->u.undef.abfd = abfd; | |
1271 | /* We don't call bfd_link_add_undef to add this to the list of | |
1272 | undefined symbols because we are going to define it | |
1273 | ourselves. */ | |
1274 | } | |
1275 | ||
1276 | ldctor_add_set_entry (h, BFD_RELOC_CTOR, name, section, value); | |
252b5132 RH |
1277 | } |
1278 | ||
1279 | /* A structure used by warning_callback to pass information through | |
1280 | bfd_map_over_sections. */ | |
1281 | ||
0125cdf2 NC |
1282 | struct warning_callback_info |
1283 | { | |
b34976b6 | 1284 | bfd_boolean found; |
252b5132 RH |
1285 | const char *warning; |
1286 | const char *symbol; | |
1287 | asymbol **asymbols; | |
1288 | }; | |
1289 | ||
4c6d802e L |
1290 | /* Look through the relocs to see if we can find a plausible address |
1291 | for SYMBOL in ABFD. Return TRUE if found. Otherwise return FALSE. */ | |
1292 | ||
1293 | static bfd_boolean | |
1294 | symbol_warning (const char *warning, const char *symbol, bfd *abfd) | |
1295 | { | |
1296 | struct warning_callback_info cinfo; | |
1297 | ||
1298 | if (!bfd_generic_link_read_symbols (abfd)) | |
df5f2391 | 1299 | einfo (_("%F%P: %pB: could not read symbols: %E\n"), abfd); |
4c6d802e L |
1300 | |
1301 | cinfo.found = FALSE; | |
1302 | cinfo.warning = warning; | |
1303 | cinfo.symbol = symbol; | |
1304 | cinfo.asymbols = bfd_get_outsymbols (abfd); | |
1305 | bfd_map_over_sections (abfd, warning_find_reloc, &cinfo); | |
1306 | return cinfo.found; | |
1307 | } | |
1308 | ||
252b5132 RH |
1309 | /* This is called when there is a reference to a warning symbol. */ |
1310 | ||
1a72702b | 1311 | static void |
1579bae1 AM |
1312 | warning_callback (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1313 | const char *warning, | |
1314 | const char *symbol, | |
1315 | bfd *abfd, | |
1316 | asection *section, | |
1317 | bfd_vma address) | |
252b5132 RH |
1318 | { |
1319 | /* This is a hack to support warn_multiple_gp. FIXME: This should | |
1320 | have a cleaner interface, but what? */ | |
0aa7f586 | 1321 | if (!config.warn_multiple_gp |
252b5132 | 1322 | && strcmp (warning, "using multiple gp values") == 0) |
1a72702b | 1323 | return; |
252b5132 RH |
1324 | |
1325 | if (section != NULL) | |
df5f2391 | 1326 | einfo ("%P: %C: %s%s\n", abfd, section, address, _("warning: "), warning); |
252b5132 | 1327 | else if (abfd == NULL) |
300475fe | 1328 | einfo ("%P: %s%s\n", _("warning: "), warning); |
252b5132 | 1329 | else if (symbol == NULL) |
df5f2391 | 1330 | einfo ("%P: %pB: %s%s\n", abfd, _("warning: "), warning); |
0aa7f586 | 1331 | else if (!symbol_warning (warning, symbol, abfd)) |
252b5132 | 1332 | { |
4c6d802e L |
1333 | bfd *b; |
1334 | /* Search all input files for a reference to SYMBOL. */ | |
c72f2fb2 | 1335 | for (b = info->input_bfds; b; b = b->link.next) |
4c6d802e | 1336 | if (b != abfd && symbol_warning (warning, symbol, b)) |
1a72702b | 1337 | return; |
df5f2391 | 1338 | einfo ("%P: %pB: %s%s\n", abfd, _("warning: "), warning); |
252b5132 | 1339 | } |
252b5132 RH |
1340 | } |
1341 | ||
1342 | /* This is called by warning_callback for each section. It checks the | |
1343 | relocs of the section to see if it can find a reference to the | |
1344 | symbol which triggered the warning. If it can, it uses the reloc | |
1345 | to give an error message with a file and line number. */ | |
1346 | ||
1347 | static void | |
1579bae1 | 1348 | warning_find_reloc (bfd *abfd, asection *sec, void *iarg) |
252b5132 | 1349 | { |
1e9cc1c2 | 1350 | struct warning_callback_info *info = (struct warning_callback_info *) iarg; |
252b5132 RH |
1351 | long relsize; |
1352 | arelent **relpp; | |
1353 | long relcount; | |
1354 | arelent **p, **pend; | |
1355 | ||
1356 | if (info->found) | |
1357 | return; | |
1358 | ||
1359 | relsize = bfd_get_reloc_upper_bound (abfd, sec); | |
1360 | if (relsize < 0) | |
df5f2391 | 1361 | einfo (_("%F%P: %pB: could not read relocs: %E\n"), abfd); |
252b5132 RH |
1362 | if (relsize == 0) |
1363 | return; | |
1364 | ||
1e9cc1c2 | 1365 | relpp = (arelent **) xmalloc (relsize); |
252b5132 RH |
1366 | relcount = bfd_canonicalize_reloc (abfd, sec, relpp, info->asymbols); |
1367 | if (relcount < 0) | |
df5f2391 | 1368 | einfo (_("%F%P: %pB: could not read relocs: %E\n"), abfd); |
252b5132 RH |
1369 | |
1370 | p = relpp; | |
1371 | pend = p + relcount; | |
1372 | for (; p < pend && *p != NULL; p++) | |
1373 | { | |
1374 | arelent *q = *p; | |
1375 | ||
1376 | if (q->sym_ptr_ptr != NULL | |
1377 | && *q->sym_ptr_ptr != NULL | |
1378 | && strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), info->symbol) == 0) | |
1379 | { | |
1380 | /* We found a reloc for the symbol we are looking for. */ | |
df5f2391 | 1381 | einfo ("%P: %C: %s%s\n", abfd, sec, q->address, _("warning: "), |
300475fe | 1382 | info->warning); |
b34976b6 | 1383 | info->found = TRUE; |
252b5132 RH |
1384 | break; |
1385 | } | |
1386 | } | |
1387 | ||
1388 | free (relpp); | |
1389 | } | |
1390 | ||
23ae20f5 NC |
1391 | #if SUPPORT_ERROR_HANDLING_SCRIPT |
1392 | char * error_handling_script = NULL; | |
1393 | #endif | |
1394 | ||
252b5132 RH |
1395 | /* This is called when an undefined symbol is found. */ |
1396 | ||
1a72702b | 1397 | static void |
0e86e20e | 1398 | undefined_symbol (struct bfd_link_info *info, |
1579bae1 AM |
1399 | const char *name, |
1400 | bfd *abfd, | |
1401 | asection *section, | |
1402 | bfd_vma address, | |
0b28295d | 1403 | bfd_boolean error) |
252b5132 RH |
1404 | { |
1405 | static char *error_name; | |
1406 | static unsigned int error_count; | |
1407 | ||
1408 | #define MAX_ERRORS_IN_A_ROW 5 | |
1409 | ||
0e86e20e AM |
1410 | if (info->ignore_hash != NULL |
1411 | && bfd_hash_lookup (info->ignore_hash, name, FALSE, FALSE) != NULL) | |
1a72702b | 1412 | return; |
0e86e20e | 1413 | |
252b5132 RH |
1414 | if (config.warn_once) |
1415 | { | |
252b5132 | 1416 | /* Only warn once about a particular undefined symbol. */ |
0e86e20e | 1417 | add_ignoresym (info, name); |
252b5132 RH |
1418 | } |
1419 | ||
1420 | /* We never print more than a reasonable number of errors in a row | |
1421 | for a single symbol. */ | |
1579bae1 | 1422 | if (error_name != NULL |
252b5132 RH |
1423 | && strcmp (name, error_name) == 0) |
1424 | ++error_count; | |
1425 | else | |
1426 | { | |
1427 | error_count = 0; | |
5e2ab612 | 1428 | free (error_name); |
d1b2b2dc | 1429 | error_name = xstrdup (name); |
252b5132 RH |
1430 | } |
1431 | ||
23ae20f5 NC |
1432 | #if SUPPORT_ERROR_HANDLING_SCRIPT |
1433 | if (error_handling_script != NULL | |
1434 | && error_count < MAX_ERRORS_IN_A_ROW) | |
1435 | { | |
1436 | char * argv[4]; | |
1437 | const char * res; | |
1438 | int status, err; | |
1439 | ||
1440 | argv[0] = error_handling_script; | |
93cf38c0 | 1441 | argv[1] = "undefined-symbol"; |
23ae20f5 NC |
1442 | argv[2] = (char *) name; |
1443 | argv[3] = NULL; | |
1444 | ||
1445 | if (verbose) | |
1446 | einfo (_("%P: About to run error handling script '%s' with arguments: '%s' '%s'\n"), | |
1447 | argv[0], argv[1], argv[2]); | |
1448 | ||
1449 | res = pex_one (PEX_SEARCH, error_handling_script, argv, | |
1450 | N_("error handling script"), | |
1451 | NULL /* Send stdout to random, temp file. */, | |
1452 | NULL /* Write to stderr. */, | |
1453 | &status, &err); | |
1454 | if (res != NULL) | |
1455 | { | |
1456 | einfo (_("%P: Failed to run error handling script '%s', reason: "), | |
1457 | error_handling_script); | |
1458 | /* FIXME: We assume here that errrno == err. */ | |
1459 | perror (res); | |
1460 | } | |
1461 | /* We ignore the return status of the script and | |
1462 | carry on to issue the normal error message. */ | |
1463 | } | |
1464 | #endif /* SUPPORT_ERROR_HANDLING_SCRIPT */ | |
1465 | ||
252b5132 RH |
1466 | if (section != NULL) |
1467 | { | |
1468 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1469 | { |
0b28295d | 1470 | if (error) |
df5f2391 | 1471 | einfo (_("%X%P: %C: undefined reference to `%pT'\n"), |
0b28295d ILT |
1472 | abfd, section, address, name); |
1473 | else | |
df5f2391 | 1474 | einfo (_("%P: %C: warning: undefined reference to `%pT'\n"), |
0b28295d | 1475 | abfd, section, address, name); |
b6f29aaa | 1476 | } |
252b5132 | 1477 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1478 | { |
1479 | if (error) | |
df5f2391 | 1480 | einfo (_("%X%P: %D: more undefined references to `%pT' follow\n"), |
0b28295d ILT |
1481 | abfd, section, address, name); |
1482 | else | |
df5f2391 | 1483 | einfo (_("%P: %D: warning: more undefined references to `%pT' follow\n"), |
0b28295d ILT |
1484 | abfd, section, address, name); |
1485 | } | |
1486 | else if (error) | |
1487 | einfo ("%X"); | |
252b5132 RH |
1488 | } |
1489 | else | |
1490 | { | |
1491 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1492 | { |
0b28295d | 1493 | if (error) |
df5f2391 | 1494 | einfo (_("%X%P: %pB: undefined reference to `%pT'\n"), |
0b28295d ILT |
1495 | abfd, name); |
1496 | else | |
df5f2391 | 1497 | einfo (_("%P: %pB: warning: undefined reference to `%pT'\n"), |
0b28295d | 1498 | abfd, name); |
b6f29aaa | 1499 | } |
252b5132 | 1500 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1501 | { |
1502 | if (error) | |
df5f2391 | 1503 | einfo (_("%X%P: %pB: more undefined references to `%pT' follow\n"), |
0b28295d ILT |
1504 | abfd, name); |
1505 | else | |
df5f2391 | 1506 | einfo (_("%P: %pB: warning: more undefined references to `%pT' follow\n"), |
0b28295d ILT |
1507 | abfd, name); |
1508 | } | |
1509 | else if (error) | |
1510 | einfo ("%X"); | |
252b5132 | 1511 | } |
252b5132 RH |
1512 | } |
1513 | ||
8aae64e6 AO |
1514 | /* Counter to limit the number of relocation overflow error messages |
1515 | to print. Errors are printed as it is decremented. When it's | |
1516 | called and the counter is zero, a final message is printed | |
1517 | indicating more relocations were omitted. When it gets to -1, no | |
1518 | such errors are printed. If it's initially set to a value less | |
1519 | than -1, all such errors will be printed (--verbose does this). */ | |
1520 | ||
1521 | int overflow_cutoff_limit = 10; | |
1522 | ||
252b5132 RH |
1523 | /* This is called when a reloc overflows. */ |
1524 | ||
1a72702b | 1525 | static void |
0e86e20e | 1526 | reloc_overflow (struct bfd_link_info *info, |
dfeffb9f | 1527 | struct bfd_link_hash_entry *entry, |
1579bae1 AM |
1528 | const char *name, |
1529 | const char *reloc_name, | |
1530 | bfd_vma addend, | |
1531 | bfd *abfd, | |
1532 | asection *section, | |
1533 | bfd_vma address) | |
252b5132 | 1534 | { |
8aae64e6 | 1535 | if (overflow_cutoff_limit == -1) |
1a72702b | 1536 | return; |
8aae64e6 | 1537 | |
a5990ada | 1538 | einfo ("%X%H:", abfd, section, address); |
8aae64e6 AO |
1539 | |
1540 | if (overflow_cutoff_limit >= 0 | |
1541 | && overflow_cutoff_limit-- == 0) | |
1542 | { | |
1543 | einfo (_(" additional relocation overflows omitted from the output\n")); | |
1a72702b | 1544 | return; |
8aae64e6 AO |
1545 | } |
1546 | ||
dfeffb9f L |
1547 | if (entry) |
1548 | { | |
1549 | while (entry->type == bfd_link_hash_indirect | |
1550 | || entry->type == bfd_link_hash_warning) | |
1551 | entry = entry->u.i.link; | |
1552 | switch (entry->type) | |
1553 | { | |
1554 | case bfd_link_hash_undefined: | |
1555 | case bfd_link_hash_undefweak: | |
0aa7f586 | 1556 | einfo (_(" relocation truncated to fit: " |
c1c8c1ef | 1557 | "%s against undefined symbol `%pT'"), |
dfeffb9f L |
1558 | reloc_name, entry->root.string); |
1559 | break; | |
1560 | case bfd_link_hash_defined: | |
1561 | case bfd_link_hash_defweak: | |
0aa7f586 | 1562 | einfo (_(" relocation truncated to fit: " |
c1c8c1ef | 1563 | "%s against symbol `%pT' defined in %pA section in %pB"), |
dfeffb9f | 1564 | reloc_name, entry->root.string, |
a6e1b90f L |
1565 | entry->u.def.section, |
1566 | entry->u.def.section == bfd_abs_section_ptr | |
0e86e20e | 1567 | ? info->output_bfd : entry->u.def.section->owner); |
dfeffb9f L |
1568 | break; |
1569 | default: | |
1570 | abort (); | |
1571 | break; | |
1572 | } | |
1573 | } | |
1574 | else | |
c1c8c1ef | 1575 | einfo (_(" relocation truncated to fit: %s against `%pT'"), |
dfeffb9f | 1576 | reloc_name, name); |
252b5132 RH |
1577 | if (addend != 0) |
1578 | einfo ("+%v", addend); | |
1579 | einfo ("\n"); | |
252b5132 RH |
1580 | } |
1581 | ||
1582 | /* This is called when a dangerous relocation is made. */ | |
1583 | ||
1a72702b | 1584 | static void |
1579bae1 AM |
1585 | reloc_dangerous (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1586 | const char *message, | |
1587 | bfd *abfd, | |
1588 | asection *section, | |
1589 | bfd_vma address) | |
252b5132 | 1590 | { |
a5990ada | 1591 | einfo (_("%X%H: dangerous relocation: %s\n"), |
e1fffbe6 | 1592 | abfd, section, address, message); |
252b5132 RH |
1593 | } |
1594 | ||
1595 | /* This is called when a reloc is being generated attached to a symbol | |
1596 | that is not being output. */ | |
1597 | ||
1a72702b | 1598 | static void |
1579bae1 AM |
1599 | unattached_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1600 | const char *name, | |
1601 | bfd *abfd, | |
1602 | asection *section, | |
1603 | bfd_vma address) | |
252b5132 | 1604 | { |
a5990ada | 1605 | einfo (_("%X%H: reloc refers to symbol `%pT' which is not being output\n"), |
e1fffbe6 | 1606 | abfd, section, address, name); |
252b5132 RH |
1607 | } |
1608 | ||
1609 | /* This is called if link_info.notice_all is set, or when a symbol in | |
1610 | link_info.notice_hash is found. Symbols are put in notice_hash | |
5d3236ee DK |
1611 | using the -y option, while notice_all is set if the --cref option |
1612 | has been supplied, or if there are any NOCROSSREFS sections in the | |
1613 | linker script; and if plugins are active, since they need to monitor | |
1614 | all references from non-IR files. */ | |
252b5132 | 1615 | |
b34976b6 | 1616 | static bfd_boolean |
1579bae1 | 1617 | notice (struct bfd_link_info *info, |
35ed3f94 | 1618 | struct bfd_link_hash_entry *h, |
46135103 | 1619 | struct bfd_link_hash_entry *inh ATTRIBUTE_UNUSED, |
1579bae1 AM |
1620 | bfd *abfd, |
1621 | asection *section, | |
16d96b5b | 1622 | bfd_vma value, |
46135103 | 1623 | flagword flags ATTRIBUTE_UNUSED) |
252b5132 | 1624 | { |
35ed3f94 AM |
1625 | const char *name; |
1626 | ||
1627 | if (h == NULL) | |
5061a885 AM |
1628 | { |
1629 | if (command_line.cref || nocrossref_list != NULL) | |
1e9cc1c2 | 1630 | return handle_asneeded_cref (abfd, (enum notice_asneeded_action) value); |
5061a885 AM |
1631 | return TRUE; |
1632 | } | |
1633 | ||
35ed3f94 | 1634 | name = h->root.string; |
5d3236ee | 1635 | if (info->notice_hash != NULL |
9e2278f5 | 1636 | && bfd_hash_lookup (info->notice_hash, name, FALSE, FALSE) != NULL) |
252b5132 RH |
1637 | { |
1638 | if (bfd_is_und_section (section)) | |
df5f2391 | 1639 | einfo (_("%P: %pB: reference to %s\n"), abfd, name); |
252b5132 | 1640 | else |
df5f2391 | 1641 | einfo (_("%P: %pB: definition of %s\n"), abfd, name); |
252b5132 RH |
1642 | } |
1643 | ||
1644 | if (command_line.cref || nocrossref_list != NULL) | |
1645 | add_cref (name, abfd, section, value); | |
1646 | ||
b34976b6 | 1647 | return TRUE; |
252b5132 | 1648 | } |