Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Main program of GNU linker. |
b90efa5b | 2 | Copyright (C) 1991-2015 Free Software Foundation, Inc. |
252b5132 RH |
3 | Written by Steve Chamberlain steve@cygnus.com |
4 | ||
f96b4a7b | 5 | This file is part of the GNU Binutils. |
252b5132 | 6 | |
f96b4a7b | 7 | This program is free software; you can redistribute it and/or modify |
2fa9fc65 | 8 | it under the terms of the GNU General Public License as published by |
f96b4a7b NC |
9 | the Free Software Foundation; either version 3 of the License, or |
10 | (at your option) any later version. | |
252b5132 | 11 | |
f96b4a7b | 12 | This program is distributed in the hope that it will be useful, |
2fa9fc65 NC |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
252b5132 | 16 | |
2fa9fc65 | 17 | You should have received a copy of the GNU General Public License |
f96b4a7b NC |
18 | along with this program; if not, write to the Free Software |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
20 | MA 02110-1301, USA. */ | |
252b5132 | 21 | |
252b5132 | 22 | #include "sysdep.h" |
3db64b00 | 23 | #include "bfd.h" |
3882b010 | 24 | #include "safe-ctype.h" |
252b5132 RH |
25 | #include "libiberty.h" |
26 | #include "progress.h" | |
27 | #include "bfdlink.h" | |
5af11cab | 28 | #include "filenames.h" |
252b5132 RH |
29 | |
30 | #include "ld.h" | |
31 | #include "ldmain.h" | |
32 | #include "ldmisc.h" | |
33 | #include "ldwrite.h" | |
252b5132 RH |
34 | #include "ldexp.h" |
35 | #include "ldlang.h" | |
df2a7313 | 36 | #include <ldgram.h> |
252b5132 RH |
37 | #include "ldlex.h" |
38 | #include "ldfile.h" | |
b71e2778 | 39 | #include "ldemul.h" |
252b5132 | 40 | #include "ldctor.h" |
5d3236ee DK |
41 | #ifdef ENABLE_PLUGINS |
42 | #include "plugin.h" | |
43 | #include "plugin-api.h" | |
5d3236ee | 44 | #endif /* ENABLE_PLUGINS */ |
252b5132 | 45 | |
0125cdf2 | 46 | /* Somewhere above, sys/stat.h got included. */ |
252b5132 RH |
47 | #if !defined(S_ISDIR) && defined(S_IFDIR) |
48 | #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) | |
49 | #endif | |
50 | ||
51 | #include <string.h> | |
52 | ||
53 | #ifdef HAVE_SBRK | |
502bdb00 | 54 | #if !HAVE_DECL_SBRK |
1579bae1 | 55 | extern void *sbrk (); |
252b5132 RH |
56 | #endif |
57 | #endif | |
58 | ||
9c8ebd6a DJ |
59 | #ifndef TARGET_SYSTEM_ROOT |
60 | #define TARGET_SYSTEM_ROOT "" | |
61 | #endif | |
62 | ||
252b5132 RH |
63 | /* EXPORTS */ |
64 | ||
53d25da6 AM |
65 | FILE *saved_script_handle = NULL; |
66 | FILE *previous_script_handle = NULL; | |
67 | bfd_boolean force_make_executable = FALSE; | |
68 | ||
252b5132 RH |
69 | char *default_target; |
70 | const char *output_filename = "a.out"; | |
71 | ||
72 | /* Name this program was invoked by. */ | |
73 | char *program_name; | |
74 | ||
9c8ebd6a | 75 | /* The prefix for system library directories. */ |
e2243057 | 76 | const char *ld_sysroot; |
9c8ebd6a | 77 | |
3fe38064 NC |
78 | /* The canonical representation of ld_sysroot. */ |
79 | char * ld_canon_sysroot; | |
80 | int ld_canon_sysroot_len; | |
81 | ||
e8044f35 | 82 | /* Set by -G argument, for targets like MIPS ELF. */ |
252b5132 RH |
83 | int g_switch_value = 8; |
84 | ||
85 | /* Nonzero means print names of input files as processed. */ | |
b34976b6 | 86 | bfd_boolean trace_files; |
252b5132 | 87 | |
cd6f1cf3 NC |
88 | /* Nonzero means report actions taken by the linker, and describe the linker script in use. */ |
89 | bfd_boolean verbose; | |
252b5132 RH |
90 | |
91 | /* Nonzero means version number was printed, so exit successfully | |
92 | instead of complaining if no input files are given. */ | |
b34976b6 | 93 | bfd_boolean version_printed; |
252b5132 | 94 | |
b34976b6 AM |
95 | /* TRUE if we should demangle symbol names. */ |
96 | bfd_boolean demangling; | |
252b5132 RH |
97 | |
98 | args_type command_line; | |
99 | ||
100 | ld_config_type config; | |
101 | ||
bcaa7b3e L |
102 | sort_type sort_section; |
103 | ||
e2243057 RS |
104 | static const char *get_sysroot |
105 | (int, char **); | |
0125cdf2 | 106 | static char *get_emulation |
1579bae1 | 107 | (int, char **); |
0125cdf2 | 108 | static bfd_boolean add_archive_element |
5d3236ee | 109 | (struct bfd_link_info *, bfd *, const char *, bfd **); |
0125cdf2 | 110 | static bfd_boolean multiple_definition |
24f58f47 | 111 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
1579bae1 | 112 | bfd *, asection *, bfd_vma); |
0125cdf2 | 113 | static bfd_boolean multiple_common |
24f58f47 AM |
114 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
115 | bfd *, enum bfd_link_hash_type, bfd_vma); | |
0125cdf2 | 116 | static bfd_boolean add_to_set |
1579bae1 AM |
117 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
118 | bfd_reloc_code_real_type, bfd *, asection *, bfd_vma); | |
0125cdf2 | 119 | static bfd_boolean constructor_callback |
1579bae1 AM |
120 | (struct bfd_link_info *, bfd_boolean, const char *, bfd *, |
121 | asection *, bfd_vma); | |
0125cdf2 | 122 | static bfd_boolean warning_callback |
1579bae1 AM |
123 | (struct bfd_link_info *, const char *, const char *, bfd *, |
124 | asection *, bfd_vma); | |
0125cdf2 | 125 | static void warning_find_reloc |
1579bae1 | 126 | (bfd *, asection *, void *); |
0125cdf2 | 127 | static bfd_boolean undefined_symbol |
1579bae1 AM |
128 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma, |
129 | bfd_boolean); | |
0125cdf2 | 130 | static bfd_boolean reloc_overflow |
dfeffb9f L |
131 | (struct bfd_link_info *, struct bfd_link_hash_entry *, const char *, |
132 | const char *, bfd_vma, bfd *, asection *, bfd_vma); | |
0125cdf2 | 133 | static bfd_boolean reloc_dangerous |
1579bae1 | 134 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
0125cdf2 | 135 | static bfd_boolean unattached_reloc |
1579bae1 | 136 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
0125cdf2 | 137 | static bfd_boolean notice |
35ed3f94 | 138 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
46135103 | 139 | struct bfd_link_hash_entry *, bfd *, asection *, bfd_vma, flagword); |
0125cdf2 NC |
140 | |
141 | static struct bfd_link_callbacks link_callbacks = | |
142 | { | |
252b5132 RH |
143 | add_archive_element, |
144 | multiple_definition, | |
145 | multiple_common, | |
146 | add_to_set, | |
147 | constructor_callback, | |
148 | warning_callback, | |
149 | undefined_symbol, | |
150 | reloc_overflow, | |
151 | reloc_dangerous, | |
152 | unattached_reloc, | |
e1fffbe6 | 153 | notice, |
2889e75b | 154 | einfo, |
49fa1e15 AM |
155 | info_msg, |
156 | minfo, | |
2889e75b | 157 | ldlang_override_segment_assignment |
252b5132 RH |
158 | }; |
159 | ||
3b66a141 HPN |
160 | static bfd_assert_handler_type default_bfd_assert_handler; |
161 | ||
252b5132 RH |
162 | struct bfd_link_info link_info; |
163 | \f | |
164 | static void | |
498cd2a0 | 165 | ld_cleanup (void) |
252b5132 | 166 | { |
498cd2a0 AM |
167 | bfd_cache_close_all (); |
168 | #ifdef ENABLE_PLUGINS | |
169 | plugin_call_cleanup (); | |
170 | #endif | |
171 | if (output_filename && delete_output_file_on_failure) | |
172 | unlink_if_ordinary (output_filename); | |
252b5132 RH |
173 | } |
174 | ||
3b66a141 HPN |
175 | /* If there's a BFD assertion, we'll notice and exit with an error |
176 | unless otherwise instructed. */ | |
177 | ||
178 | static void | |
179 | ld_bfd_assert_handler (const char *fmt, const char *bfdver, | |
180 | const char *file, int line) | |
181 | { | |
182 | (*default_bfd_assert_handler) (fmt, bfdver, file, line); | |
183 | config.make_executable = FALSE; | |
184 | } | |
185 | ||
252b5132 | 186 | int |
1579bae1 | 187 | main (int argc, char **argv) |
252b5132 RH |
188 | { |
189 | char *emulation; | |
190 | long start_time = get_run_time (); | |
24a09713 SB |
191 | #ifdef HAVE_SBRK |
192 | char *start_sbrk = (char *) sbrk (0); | |
193 | #endif | |
252b5132 RH |
194 | |
195 | #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) | |
196 | setlocale (LC_MESSAGES, ""); | |
3882b010 L |
197 | #endif |
198 | #if defined (HAVE_SETLOCALE) | |
199 | setlocale (LC_CTYPE, ""); | |
252b5132 RH |
200 | #endif |
201 | bindtextdomain (PACKAGE, LOCALEDIR); | |
202 | textdomain (PACKAGE); | |
203 | ||
204 | program_name = argv[0]; | |
205 | xmalloc_set_program_name (program_name); | |
206 | ||
207 | START_PROGRESS (program_name, 0); | |
208 | ||
869b9d07 MM |
209 | expandargv (&argc, &argv); |
210 | ||
252b5132 RH |
211 | bfd_init (); |
212 | ||
213 | bfd_set_error_program_name (program_name); | |
214 | ||
3b66a141 HPN |
215 | /* We want to notice and fail on those nasty BFD assertions which are |
216 | likely to signal incorrect output being generated but otherwise may | |
217 | leave no trace. */ | |
218 | default_bfd_assert_handler = bfd_set_assert_handler (ld_bfd_assert_handler); | |
219 | ||
498cd2a0 | 220 | xatexit (ld_cleanup); |
252b5132 | 221 | |
e2243057 RS |
222 | /* Set up the sysroot directory. */ |
223 | ld_sysroot = get_sysroot (argc, argv); | |
224 | if (*ld_sysroot) | |
9c8ebd6a | 225 | { |
e2243057 | 226 | if (*TARGET_SYSTEM_ROOT == 0) |
9c8ebd6a | 227 | { |
70487fb2 | 228 | einfo ("%P%F: this linker was not configured to use sysroots\n"); |
e2243057 | 229 | ld_sysroot = ""; |
0125cdf2 | 230 | } |
e2243057 RS |
231 | else |
232 | ld_canon_sysroot = lrealpath (ld_sysroot); | |
0125cdf2 | 233 | } |
3fe38064 NC |
234 | if (ld_canon_sysroot) |
235 | ld_canon_sysroot_len = strlen (ld_canon_sysroot); | |
236 | else | |
237 | ld_canon_sysroot_len = -1; | |
238 | ||
252b5132 RH |
239 | /* Set the default BFD target based on the configured target. Doing |
240 | this permits the linker to be configured for a particular target, | |
241 | and linked against a shared BFD library which was configured for | |
242 | a different target. The macro TARGET is defined by Makefile. */ | |
243 | if (! bfd_set_default_target (TARGET)) | |
244 | { | |
245 | einfo (_("%X%P: can't set BFD default target to `%s': %E\n"), TARGET); | |
246 | xexit (1); | |
247 | } | |
248 | ||
b47c4208 AM |
249 | #if YYDEBUG |
250 | { | |
251 | extern int yydebug; | |
252 | yydebug = 1; | |
253 | } | |
254 | #endif | |
255 | ||
b34976b6 | 256 | config.build_constructors = TRUE; |
c76308d2 | 257 | config.rpath_separator = ':'; |
a854a4a7 AM |
258 | config.split_by_reloc = (unsigned) -1; |
259 | config.split_by_file = (bfd_size_type) -1; | |
3b95049e AM |
260 | config.make_executable = TRUE; |
261 | config.magic_demand_paged = TRUE; | |
262 | config.text_read_only = TRUE; | |
4f9d22a0 | 263 | link_info.disable_target_specific_optimizations = -1; |
3b95049e | 264 | |
b34976b6 | 265 | command_line.warn_mismatch = TRUE; |
fe7929ce | 266 | command_line.warn_search_mismatch = TRUE; |
02b0b1aa | 267 | command_line.check_section_addresses = -1; |
bcaa7b3e | 268 | |
252b5132 RH |
269 | /* We initialize DEMANGLING based on the environment variable |
270 | COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the | |
271 | output of the linker, unless COLLECT_NO_DEMANGLE is set in the | |
272 | environment. Acting the same way here lets us provide the same | |
273 | interface by default. */ | |
274 | demangling = getenv ("COLLECT_NO_DEMANGLE") == NULL; | |
275 | ||
b34976b6 | 276 | link_info.allow_undefined_version = TRUE; |
b5067602 | 277 | link_info.keep_memory = TRUE; |
b5067602 | 278 | link_info.combreloc = TRUE; |
d5cd3933 | 279 | link_info.strip_discarded = TRUE; |
fdc90cb4 | 280 | link_info.emit_hash = TRUE; |
a9a4c53e AM |
281 | link_info.callbacks = &link_callbacks; |
282 | link_info.input_bfds_tail = &link_info.input_bfds; | |
3dbf70a2 MM |
283 | /* SVR4 linkers seem to set DT_INIT and DT_FINI based on magic _init |
284 | and _fini symbols. We are compatible. */ | |
285 | link_info.init_function = "_init"; | |
286 | link_info.fini_function = "_fini"; | |
a9a4c53e | 287 | link_info.relax_pass = 1; |
889c2a67 | 288 | link_info.extern_protected_data = -1; |
e0076ab3 | 289 | link_info.pei386_auto_import = -1; |
db6751f2 | 290 | link_info.spare_dynamic_tags = 5; |
967928e9 | 291 | link_info.path_separator = ':'; |
24718e3b | 292 | |
252b5132 | 293 | ldfile_add_arch (""); |
252b5132 RH |
294 | emulation = get_emulation (argc, argv); |
295 | ldemul_choose_mode (emulation); | |
742aeb63 | 296 | default_target = ldemul_choose_target (argc, argv); |
8be573a7 AM |
297 | config.maxpagesize = bfd_emul_get_maxpagesize (default_target); |
298 | config.commonpagesize = bfd_emul_get_commonpagesize (default_target); | |
252b5132 | 299 | lang_init (); |
18d6a79d | 300 | ldexp_init (); |
252b5132 | 301 | ldemul_before_parse (); |
b34976b6 | 302 | lang_has_input_file = FALSE; |
252b5132 RH |
303 | parse_args (argc, argv); |
304 | ||
2d643429 NC |
305 | if (config.hash_table_size != 0) |
306 | bfd_hash_set_default_size (config.hash_table_size); | |
307 | ||
9bbc1a67 AM |
308 | #ifdef ENABLE_PLUGINS |
309 | /* Now all the plugin arguments have been gathered, we can load them. */ | |
d82184d7 | 310 | plugin_load_plugins (); |
9bbc1a67 | 311 | #endif /* ENABLE_PLUGINS */ |
36af4a4e | 312 | |
9bbc1a67 | 313 | ldemul_set_symbols (); |
252b5132 | 314 | |
14be8564 L |
315 | /* If we have not already opened and parsed a linker script, |
316 | try the default script from command line first. */ | |
317 | if (saved_script_handle == NULL | |
318 | && command_line.default_script != NULL) | |
319 | { | |
320 | ldfile_open_command_file (command_line.default_script); | |
321 | parser_input = input_script; | |
322 | yyparse (); | |
323 | } | |
324 | ||
b9a8de1e NC |
325 | /* If we have not already opened and parsed a linker script |
326 | read the emulation's appropriate default script. */ | |
b90e1c6f | 327 | if (saved_script_handle == NULL) |
252b5132 | 328 | { |
252b5132 | 329 | int isfile; |
b7a26f91 | 330 | char *s = ldemul_get_script (&isfile); |
252b5132 RH |
331 | |
332 | if (isfile) | |
7d24f02c | 333 | ldfile_open_default_command_file (s); |
252b5132 | 334 | else |
b7a26f91 | 335 | { |
252b5132 | 336 | lex_string = s; |
dab69f68 | 337 | lex_redirect (s, _("built in linker script"), 1); |
252b5132 RH |
338 | } |
339 | parser_input = input_script; | |
340 | yyparse (); | |
341 | lex_string = NULL; | |
342 | } | |
343 | ||
cd6f1cf3 | 344 | if (verbose) |
b9a8de1e | 345 | { |
9cb61eab AM |
346 | if (saved_script_handle) |
347 | info_msg (_("using external linker script:")); | |
348 | else | |
349 | info_msg (_("using internal linker script:")); | |
350 | info_msg ("\n==================================================\n"); | |
b9a8de1e NC |
351 | |
352 | if (saved_script_handle) | |
353 | { | |
74699268 | 354 | static const int ld_bufsz = 8193; |
b9a8de1e | 355 | size_t n; |
1e9cc1c2 | 356 | char *buf = (char *) xmalloc (ld_bufsz); |
b9a8de1e NC |
357 | |
358 | rewind (saved_script_handle); | |
74699268 | 359 | while ((n = fread (buf, 1, ld_bufsz - 1, saved_script_handle)) > 0) |
b9a8de1e | 360 | { |
b7a26f91 | 361 | buf[n] = 0; |
b9a8de1e NC |
362 | info_msg (buf); |
363 | } | |
364 | rewind (saved_script_handle); | |
365 | free (buf); | |
366 | } | |
367 | else | |
368 | { | |
369 | int isfile; | |
370 | ||
b7a26f91 | 371 | info_msg (ldemul_get_script (&isfile)); |
b9a8de1e | 372 | } |
b7a26f91 | 373 | |
b9a8de1e NC |
374 | info_msg ("\n==================================================\n"); |
375 | } | |
376 | ||
30824704 RM |
377 | if (command_line.print_output_format) |
378 | info_msg ("%s\n", lang_get_output_target ()); | |
379 | ||
252b5132 RH |
380 | lang_final (); |
381 | ||
61e2488c JT |
382 | /* If the only command line argument has been -v or --version or --verbose |
383 | then ignore any input files provided by linker scripts and exit now. | |
384 | We do not want to create an output file when the linker is just invoked | |
385 | to provide version information. */ | |
386 | if (argc == 2 && version_printed) | |
387 | xexit (0); | |
388 | ||
b34976b6 | 389 | if (!lang_has_input_file) |
252b5132 | 390 | { |
30824704 | 391 | if (version_printed || command_line.print_output_format) |
252b5132 RH |
392 | xexit (0); |
393 | einfo (_("%P%F: no input files\n")); | |
394 | } | |
395 | ||
396 | if (trace_files) | |
0125cdf2 | 397 | info_msg (_("%P: mode %s\n"), emulation); |
252b5132 RH |
398 | |
399 | ldemul_after_parse (); | |
400 | ||
252b5132 RH |
401 | if (config.map_filename) |
402 | { | |
403 | if (strcmp (config.map_filename, "-") == 0) | |
404 | { | |
405 | config.map_file = stdout; | |
406 | } | |
407 | else | |
408 | { | |
409 | config.map_file = fopen (config.map_filename, FOPEN_WT); | |
410 | if (config.map_file == (FILE *) NULL) | |
411 | { | |
412 | bfd_set_error (bfd_error_system_call); | |
413 | einfo (_("%P%F: cannot open map file %s: %E\n"), | |
414 | config.map_filename); | |
415 | } | |
416 | } | |
417 | } | |
418 | ||
252b5132 RH |
419 | lang_process (); |
420 | ||
421 | /* Print error messages for any missing symbols, for any warning | |
6d5e62f8 | 422 | symbols, and possibly multiple definitions. */ |
1049f94e | 423 | if (link_info.relocatable) |
f13a99db | 424 | link_info.output_bfd->flags &= ~EXEC_P; |
252b5132 | 425 | else |
f13a99db | 426 | link_info.output_bfd->flags |= EXEC_P; |
252b5132 | 427 | |
0ce398f1 L |
428 | if ((link_info.compress_debug & COMPRESS_DEBUG)) |
429 | { | |
430 | link_info.output_bfd->flags |= BFD_COMPRESS; | |
431 | if (link_info.compress_debug == COMPRESS_DEBUG_GABI_ZLIB) | |
432 | link_info.output_bfd->flags |= BFD_COMPRESS_GABI; | |
433 | } | |
434 | ||
252b5132 RH |
435 | ldwrite (); |
436 | ||
437 | if (config.map_file != NULL) | |
438 | lang_map (); | |
439 | if (command_line.cref) | |
440 | output_cref (config.map_file != NULL ? config.map_file : stdout); | |
441 | if (nocrossref_list != NULL) | |
442 | check_nocrossrefs (); | |
edf84efc NC |
443 | #if 0 |
444 | { | |
445 | struct bfd_link_hash_entry * h; | |
252b5132 | 446 | |
edf84efc NC |
447 | h = bfd_link_hash_lookup (link_info.hash, "__image_base__", 0,0,1); |
448 | fprintf (stderr, "lookup = %p val %lx\n", h, h ? h->u.def.value : 1); | |
449 | } | |
450 | #endif | |
18d6a79d | 451 | ldexp_finish (); |
750877ba L |
452 | lang_finish (); |
453 | ||
1049f94e | 454 | /* Even if we're producing relocatable output, some non-fatal errors should |
252b5132 | 455 | be reported in the exit status. (What non-fatal errors, if any, do we |
1049f94e | 456 | want to ignore for relocatable output?) */ |
b34976b6 | 457 | if (!config.make_executable && !force_make_executable) |
252b5132 | 458 | { |
b34976b6 | 459 | if (trace_files) |
0125cdf2 NC |
460 | einfo (_("%P: link errors found, deleting executable `%s'\n"), |
461 | output_filename); | |
252b5132 | 462 | |
4309cbf2 | 463 | /* The file will be removed by ld_cleanup. */ |
252b5132 RH |
464 | xexit (1); |
465 | } | |
466 | else | |
467 | { | |
f13a99db AM |
468 | if (! bfd_close (link_info.output_bfd)) |
469 | einfo (_("%F%B: final close failed: %E\n"), link_info.output_bfd); | |
252b5132 RH |
470 | |
471 | /* If the --force-exe-suffix is enabled, and we're making an | |
6d5e62f8 KH |
472 | executable file and it doesn't end in .exe, copy it to one |
473 | which does. */ | |
1049f94e | 474 | if (! link_info.relocatable && command_line.force_exe_suffix) |
252b5132 RH |
475 | { |
476 | int len = strlen (output_filename); | |
0125cdf2 | 477 | |
6d5e62f8 | 478 | if (len < 4 |
252b5132 RH |
479 | || (strcasecmp (output_filename + len - 4, ".exe") != 0 |
480 | && strcasecmp (output_filename + len - 4, ".dll") != 0)) | |
481 | { | |
482 | FILE *src; | |
483 | FILE *dst; | |
484 | const int bsize = 4096; | |
1e9cc1c2 | 485 | char *buf = (char *) xmalloc (bsize); |
252b5132 | 486 | int l; |
1e9cc1c2 | 487 | char *dst_name = (char *) xmalloc (len + 5); |
0125cdf2 | 488 | |
252b5132 RH |
489 | strcpy (dst_name, output_filename); |
490 | strcat (dst_name, ".exe"); | |
491 | src = fopen (output_filename, FOPEN_RB); | |
492 | dst = fopen (dst_name, FOPEN_WB); | |
493 | ||
494 | if (!src) | |
b3862264 | 495 | einfo (_("%P%F: unable to open for source of copy `%s'\n"), |
1579bae1 | 496 | output_filename); |
252b5132 | 497 | if (!dst) |
b3862264 | 498 | einfo (_("%P%F: unable to open for destination of copy `%s'\n"), |
1579bae1 | 499 | dst_name); |
252b5132 RH |
500 | while ((l = fread (buf, 1, bsize, src)) > 0) |
501 | { | |
502 | int done = fwrite (buf, 1, l, dst); | |
0125cdf2 | 503 | |
252b5132 | 504 | if (done != l) |
0125cdf2 | 505 | einfo (_("%P: Error writing file `%s'\n"), dst_name); |
252b5132 | 506 | } |
0125cdf2 | 507 | |
252b5132 RH |
508 | fclose (src); |
509 | if (fclose (dst) == EOF) | |
0125cdf2 | 510 | einfo (_("%P: Error closing file `%s'\n"), dst_name); |
252b5132 RH |
511 | free (dst_name); |
512 | free (buf); | |
513 | } | |
514 | } | |
515 | } | |
516 | ||
517 | END_PROGRESS (program_name); | |
518 | ||
519 | if (config.stats) | |
520 | { | |
521 | #ifdef HAVE_SBRK | |
1e9cc1c2 | 522 | char *lim = (char *) sbrk (0); |
252b5132 RH |
523 | #endif |
524 | long run_time = get_run_time () - start_time; | |
525 | ||
e922bcab | 526 | fflush (stdout); |
252b5132 RH |
527 | fprintf (stderr, _("%s: total time in link: %ld.%06ld\n"), |
528 | program_name, run_time / 1000000, run_time % 1000000); | |
529 | #ifdef HAVE_SBRK | |
530 | fprintf (stderr, _("%s: data size %ld\n"), program_name, | |
24a09713 | 531 | (long) (lim - start_sbrk)); |
252b5132 | 532 | #endif |
e922bcab | 533 | fflush (stderr); |
252b5132 RH |
534 | } |
535 | ||
4309cbf2 | 536 | /* Prevent ld_cleanup from doing anything, after a successful link. */ |
252b5132 RH |
537 | output_filename = NULL; |
538 | ||
539 | xexit (0); | |
540 | return 0; | |
541 | } | |
542 | ||
e2243057 RS |
543 | /* If the configured sysroot is relocatable, try relocating it based on |
544 | default prefix FROM. Return the relocated directory if it exists, | |
545 | otherwise return null. */ | |
546 | ||
547 | static char * | |
548 | get_relative_sysroot (const char *from ATTRIBUTE_UNUSED) | |
549 | { | |
550 | #ifdef TARGET_SYSTEM_ROOT_RELOCATABLE | |
551 | char *path; | |
552 | struct stat s; | |
553 | ||
554 | path = make_relative_prefix (program_name, from, TARGET_SYSTEM_ROOT); | |
555 | if (path) | |
556 | { | |
557 | if (stat (path, &s) == 0 && S_ISDIR (s.st_mode)) | |
558 | return path; | |
559 | free (path); | |
560 | } | |
561 | #endif | |
562 | return 0; | |
563 | } | |
564 | ||
565 | /* Return the sysroot directory. Return "" if no sysroot is being used. */ | |
566 | ||
567 | static const char * | |
568 | get_sysroot (int argc, char **argv) | |
569 | { | |
570 | int i; | |
571 | const char *path; | |
572 | ||
573 | for (i = 1; i < argc; i++) | |
0112cd26 | 574 | if (CONST_STRNEQ (argv[i], "--sysroot=")) |
e2243057 RS |
575 | return argv[i] + strlen ("--sysroot="); |
576 | ||
577 | path = get_relative_sysroot (BINDIR); | |
578 | if (path) | |
579 | return path; | |
580 | ||
581 | path = get_relative_sysroot (TOOLBINDIR); | |
582 | if (path) | |
583 | return path; | |
584 | ||
585 | return TARGET_SYSTEM_ROOT; | |
586 | } | |
587 | ||
252b5132 RH |
588 | /* We need to find any explicitly given emulation in order to initialize the |
589 | state that's needed by the lex&yacc argument parser (parse_args). */ | |
590 | ||
591 | static char * | |
1579bae1 | 592 | get_emulation (int argc, char **argv) |
252b5132 RH |
593 | { |
594 | char *emulation; | |
595 | int i; | |
596 | ||
597 | emulation = getenv (EMULATION_ENVIRON); | |
598 | if (emulation == NULL) | |
599 | emulation = DEFAULT_EMULATION; | |
600 | ||
601 | for (i = 1; i < argc; i++) | |
602 | { | |
0112cd26 | 603 | if (CONST_STRNEQ (argv[i], "-m")) |
252b5132 RH |
604 | { |
605 | if (argv[i][2] == '\0') | |
606 | { | |
607 | /* -m EMUL */ | |
608 | if (i < argc - 1) | |
609 | { | |
610 | emulation = argv[i + 1]; | |
611 | i++; | |
612 | } | |
613 | else | |
0125cdf2 | 614 | einfo (_("%P%F: missing argument to -m\n")); |
252b5132 RH |
615 | } |
616 | else if (strcmp (argv[i], "-mips1") == 0 | |
617 | || strcmp (argv[i], "-mips2") == 0 | |
618 | || strcmp (argv[i], "-mips3") == 0 | |
d1cf510e | 619 | || strcmp (argv[i], "-mips4") == 0 |
6f33421c CD |
620 | || strcmp (argv[i], "-mips5") == 0 |
621 | || strcmp (argv[i], "-mips32") == 0 | |
622 | || strcmp (argv[i], "-mips32r2") == 0 | |
7361da2c | 623 | || strcmp (argv[i], "-mips32r6") == 0 |
5f74bc13 | 624 | || strcmp (argv[i], "-mips64") == 0 |
7361da2c AB |
625 | || strcmp (argv[i], "-mips64r2") == 0 |
626 | || strcmp (argv[i], "-mips64r6") == 0) | |
252b5132 | 627 | { |
31d677f9 | 628 | /* FIXME: The arguments -mips1, -mips2, -mips3, etc. are |
252b5132 RH |
629 | passed to the linker by some MIPS compilers. They |
630 | generally tell the linker to use a slightly different | |
631 | library path. Perhaps someday these should be | |
632 | implemented as emulations; until then, we just ignore | |
633 | the arguments and hope that nobody ever creates | |
634 | emulations named ips1, ips2 or ips3. */ | |
635 | } | |
636 | else if (strcmp (argv[i], "-m486") == 0) | |
637 | { | |
638 | /* FIXME: The argument -m486 is passed to the linker on | |
639 | some Linux systems. Hope that nobody creates an | |
640 | emulation named 486. */ | |
641 | } | |
642 | else | |
643 | { | |
644 | /* -mEMUL */ | |
645 | emulation = &argv[i][2]; | |
646 | } | |
647 | } | |
648 | } | |
649 | ||
650 | return emulation; | |
651 | } | |
652 | ||
252b5132 | 653 | void |
1579bae1 | 654 | add_ysym (const char *name) |
252b5132 | 655 | { |
1579bae1 | 656 | if (link_info.notice_hash == NULL) |
252b5132 | 657 | { |
1e9cc1c2 NC |
658 | link_info.notice_hash = |
659 | (struct bfd_hash_table *) xmalloc (sizeof (struct bfd_hash_table)); | |
66eb6687 AM |
660 | if (!bfd_hash_table_init_n (link_info.notice_hash, |
661 | bfd_hash_newfunc, | |
662 | sizeof (struct bfd_hash_entry), | |
663 | 61)) | |
252b5132 | 664 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); |
6d5e62f8 | 665 | } |
252b5132 | 666 | |
1579bae1 | 667 | if (bfd_hash_lookup (link_info.notice_hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
668 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); |
669 | } | |
670 | ||
0e86e20e AM |
671 | void |
672 | add_ignoresym (struct bfd_link_info *info, const char *name) | |
673 | { | |
674 | if (info->ignore_hash == NULL) | |
675 | { | |
676 | info->ignore_hash = xmalloc (sizeof (struct bfd_hash_table)); | |
677 | if (! bfd_hash_table_init_n (info->ignore_hash, | |
678 | bfd_hash_newfunc, | |
679 | sizeof (struct bfd_hash_entry), | |
680 | 61)) | |
681 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
682 | } | |
683 | ||
684 | if (bfd_hash_lookup (info->ignore_hash, name, TRUE, TRUE) == NULL) | |
685 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); | |
686 | } | |
687 | ||
252b5132 RH |
688 | /* Record a symbol to be wrapped, from the --wrap option. */ |
689 | ||
690 | void | |
1579bae1 | 691 | add_wrap (const char *name) |
252b5132 RH |
692 | { |
693 | if (link_info.wrap_hash == NULL) | |
694 | { | |
1e9cc1c2 NC |
695 | link_info.wrap_hash = |
696 | (struct bfd_hash_table *) xmalloc (sizeof (struct bfd_hash_table)); | |
66eb6687 AM |
697 | if (!bfd_hash_table_init_n (link_info.wrap_hash, |
698 | bfd_hash_newfunc, | |
699 | sizeof (struct bfd_hash_entry), | |
700 | 61)) | |
252b5132 RH |
701 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); |
702 | } | |
0125cdf2 | 703 | |
b34976b6 | 704 | if (bfd_hash_lookup (link_info.wrap_hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
705 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); |
706 | } | |
707 | ||
708 | /* Handle the -retain-symbols-file option. */ | |
709 | ||
710 | void | |
1579bae1 | 711 | add_keepsyms_file (const char *filename) |
252b5132 RH |
712 | { |
713 | FILE *file; | |
714 | char *buf; | |
715 | size_t bufsize; | |
716 | int c; | |
717 | ||
718 | if (link_info.strip == strip_some) | |
719 | einfo (_("%X%P: error: duplicate retain-symbols-file\n")); | |
720 | ||
721 | file = fopen (filename, "r"); | |
1579bae1 | 722 | if (file == NULL) |
252b5132 RH |
723 | { |
724 | bfd_set_error (bfd_error_system_call); | |
725 | einfo ("%X%P: %s: %E\n", filename); | |
726 | return; | |
727 | } | |
728 | ||
1e9cc1c2 NC |
729 | link_info.keep_hash = (struct bfd_hash_table *) |
730 | xmalloc (sizeof (struct bfd_hash_table)); | |
66eb6687 AM |
731 | if (!bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc, |
732 | sizeof (struct bfd_hash_entry))) | |
252b5132 RH |
733 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); |
734 | ||
735 | bufsize = 100; | |
1e9cc1c2 | 736 | buf = (char *) xmalloc (bufsize); |
252b5132 RH |
737 | |
738 | c = getc (file); | |
739 | while (c != EOF) | |
740 | { | |
3882b010 | 741 | while (ISSPACE (c)) |
252b5132 RH |
742 | c = getc (file); |
743 | ||
744 | if (c != EOF) | |
745 | { | |
746 | size_t len = 0; | |
747 | ||
3882b010 | 748 | while (! ISSPACE (c) && c != EOF) |
252b5132 RH |
749 | { |
750 | buf[len] = c; | |
751 | ++len; | |
752 | if (len >= bufsize) | |
753 | { | |
754 | bufsize *= 2; | |
1e9cc1c2 | 755 | buf = (char *) xrealloc (buf, bufsize); |
252b5132 RH |
756 | } |
757 | c = getc (file); | |
758 | } | |
759 | ||
760 | buf[len] = '\0'; | |
761 | ||
1579bae1 | 762 | if (bfd_hash_lookup (link_info.keep_hash, buf, TRUE, TRUE) == NULL) |
252b5132 RH |
763 | einfo (_("%P%F: bfd_hash_lookup for insertion failed: %E\n")); |
764 | } | |
765 | } | |
766 | ||
767 | if (link_info.strip != strip_none) | |
768 | einfo (_("%P: `-retain-symbols-file' overrides `-s' and `-S'\n")); | |
769 | ||
5ed6aba4 | 770 | free (buf); |
252b5132 | 771 | link_info.strip = strip_some; |
d9313f4f | 772 | fclose (file); |
252b5132 RH |
773 | } |
774 | \f | |
775 | /* Callbacks from the BFD linker routines. */ | |
776 | ||
777 | /* This is called when BFD has decided to include an archive member in | |
778 | a link. */ | |
779 | ||
b34976b6 | 780 | static bfd_boolean |
e1fffbe6 | 781 | add_archive_element (struct bfd_link_info *info, |
1579bae1 | 782 | bfd *abfd, |
5d3236ee DK |
783 | const char *name, |
784 | bfd **subsbfd ATTRIBUTE_UNUSED) | |
252b5132 RH |
785 | { |
786 | lang_input_statement_type *input; | |
5d3236ee | 787 | lang_input_statement_type orig_input; |
252b5132 | 788 | |
1e9cc1c2 NC |
789 | input = (lang_input_statement_type *) |
790 | xcalloc (1, sizeof (lang_input_statement_type)); | |
252b5132 RH |
791 | input->filename = abfd->filename; |
792 | input->local_sym_name = abfd->filename; | |
793 | input->the_bfd = abfd; | |
252b5132 | 794 | |
5d3236ee DK |
795 | /* Save the original data for trace files/tries below, as plugins |
796 | (if enabled) may possibly alter it to point to a replacement | |
797 | BFD, but we still want to output the original BFD filename. */ | |
798 | orig_input = *input; | |
799 | #ifdef ENABLE_PLUGINS | |
716db898 | 800 | if (link_info.lto_plugin_active && !no_more_claiming) |
5d3236ee DK |
801 | { |
802 | /* We must offer this archive member to the plugins to claim. */ | |
35a1e5f3 L |
803 | plugin_maybe_claim (input); |
804 | if (input->flags.claimed) | |
5d3236ee | 805 | { |
35a1e5f3 L |
806 | input->flags.claim_archive = TRUE; |
807 | *subsbfd = input->the_bfd; | |
5d3236ee DK |
808 | } |
809 | } | |
810 | #endif /* ENABLE_PLUGINS */ | |
811 | ||
252b5132 RH |
812 | ldlang_add_file (input); |
813 | ||
1579bae1 | 814 | if (config.map_file != NULL) |
252b5132 | 815 | { |
b34976b6 | 816 | static bfd_boolean header_printed; |
252b5132 RH |
817 | struct bfd_link_hash_entry *h; |
818 | bfd *from; | |
819 | int len; | |
820 | ||
e1fffbe6 | 821 | h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); |
252b5132 RH |
822 | |
823 | if (h == NULL) | |
824 | from = NULL; | |
825 | else | |
826 | { | |
827 | switch (h->type) | |
828 | { | |
829 | default: | |
830 | from = NULL; | |
831 | break; | |
832 | ||
833 | case bfd_link_hash_defined: | |
834 | case bfd_link_hash_defweak: | |
835 | from = h->u.def.section->owner; | |
836 | break; | |
837 | ||
838 | case bfd_link_hash_undefined: | |
839 | case bfd_link_hash_undefweak: | |
840 | from = h->u.undef.abfd; | |
841 | break; | |
842 | ||
843 | case bfd_link_hash_common: | |
844 | from = h->u.c.p->section->owner; | |
845 | break; | |
846 | } | |
847 | } | |
848 | ||
849 | if (! header_printed) | |
850 | { | |
851 | char buf[100]; | |
852 | ||
16e4ecc0 AM |
853 | sprintf (buf, _("Archive member included " |
854 | "to satisfy reference by file (symbol)\n\n")); | |
252b5132 | 855 | minfo ("%s", buf); |
b34976b6 | 856 | header_printed = TRUE; |
252b5132 RH |
857 | } |
858 | ||
859 | if (bfd_my_archive (abfd) == NULL) | |
860 | { | |
861 | minfo ("%s", bfd_get_filename (abfd)); | |
862 | len = strlen (bfd_get_filename (abfd)); | |
863 | } | |
864 | else | |
865 | { | |
866 | minfo ("%s(%s)", bfd_get_filename (bfd_my_archive (abfd)), | |
867 | bfd_get_filename (abfd)); | |
868 | len = (strlen (bfd_get_filename (bfd_my_archive (abfd))) | |
869 | + strlen (bfd_get_filename (abfd)) | |
870 | + 2); | |
871 | } | |
872 | ||
873 | if (len >= 29) | |
874 | { | |
875 | print_nl (); | |
876 | len = 0; | |
877 | } | |
878 | while (len < 30) | |
879 | { | |
880 | print_space (); | |
881 | ++len; | |
882 | } | |
883 | ||
884 | if (from != NULL) | |
885 | minfo ("%B ", from); | |
886 | if (h != NULL) | |
887 | minfo ("(%T)\n", h->root.string); | |
888 | else | |
889 | minfo ("(%s)\n", name); | |
890 | } | |
891 | ||
cd6f1cf3 | 892 | if (trace_files || verbose) |
5d3236ee | 893 | info_msg ("%I\n", &orig_input); |
b34976b6 | 894 | return TRUE; |
252b5132 RH |
895 | } |
896 | ||
897 | /* This is called when BFD has discovered a symbol which is defined | |
898 | multiple times. */ | |
899 | ||
b34976b6 | 900 | static bfd_boolean |
24f58f47 AM |
901 | multiple_definition (struct bfd_link_info *info, |
902 | struct bfd_link_hash_entry *h, | |
1579bae1 AM |
903 | bfd *nbfd, |
904 | asection *nsec, | |
905 | bfd_vma nval) | |
252b5132 | 906 | { |
24f58f47 AM |
907 | const char *name; |
908 | bfd *obfd; | |
909 | asection *osec; | |
910 | bfd_vma oval; | |
911 | ||
912 | if (info->allow_multiple_definition) | |
913 | return TRUE; | |
914 | ||
915 | switch (h->type) | |
916 | { | |
917 | case bfd_link_hash_defined: | |
918 | osec = h->u.def.section; | |
919 | oval = h->u.def.value; | |
920 | obfd = h->u.def.section->owner; | |
921 | break; | |
922 | case bfd_link_hash_indirect: | |
923 | osec = bfd_ind_section_ptr; | |
924 | oval = 0; | |
925 | obfd = NULL; | |
926 | break; | |
927 | default: | |
928 | abort (); | |
929 | } | |
930 | ||
931 | /* Ignore a redefinition of an absolute symbol to the | |
932 | same value; it's harmless. */ | |
933 | if (h->type == bfd_link_hash_defined | |
934 | && bfd_is_abs_section (osec) | |
935 | && bfd_is_abs_section (nsec) | |
936 | && nval == oval) | |
937 | return TRUE; | |
938 | ||
252b5132 RH |
939 | /* If either section has the output_section field set to |
940 | bfd_abs_section_ptr, it means that the section is being | |
941 | discarded, and this is not really a multiple definition at all. | |
9e2278f5 AM |
942 | FIXME: It would be cleaner to somehow ignore symbols defined in |
943 | sections which are being discarded. */ | |
252b5132 RH |
944 | if ((osec->output_section != NULL |
945 | && ! bfd_is_abs_section (osec) | |
946 | && bfd_is_abs_section (osec->output_section)) | |
947 | || (nsec->output_section != NULL | |
948 | && ! bfd_is_abs_section (nsec) | |
949 | && bfd_is_abs_section (nsec->output_section))) | |
b34976b6 | 950 | return TRUE; |
252b5132 | 951 | |
24f58f47 AM |
952 | name = h->root.string; |
953 | if (nbfd == NULL) | |
954 | { | |
955 | nbfd = obfd; | |
956 | nsec = osec; | |
957 | nval = oval; | |
958 | obfd = NULL; | |
959 | } | |
252b5132 RH |
960 | einfo (_("%X%C: multiple definition of `%T'\n"), |
961 | nbfd, nsec, nval, name); | |
1579bae1 | 962 | if (obfd != NULL) |
252b5132 | 963 | einfo (_("%D: first defined here\n"), obfd, osec, oval); |
9b14b192 | 964 | |
13761a11 | 965 | if (RELAXATION_ENABLED_BY_USER) |
9b14b192 NC |
966 | { |
967 | einfo (_("%P: Disabling relaxation: it will not work with multiple definitions\n")); | |
13761a11 | 968 | DISABLE_RELAXATION; |
9b14b192 | 969 | } |
6d5e62f8 | 970 | |
b34976b6 | 971 | return TRUE; |
252b5132 RH |
972 | } |
973 | ||
974 | /* This is called when there is a definition of a common symbol, or | |
975 | when a common symbol is found for a symbol that is already defined, | |
976 | or when two common symbols are found. We only do something if | |
977 | -warn-common was used. */ | |
978 | ||
b34976b6 | 979 | static bfd_boolean |
1579bae1 | 980 | multiple_common (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
24f58f47 | 981 | struct bfd_link_hash_entry *h, |
1579bae1 AM |
982 | bfd *nbfd, |
983 | enum bfd_link_hash_type ntype, | |
984 | bfd_vma nsize) | |
252b5132 | 985 | { |
24f58f47 AM |
986 | const char *name; |
987 | bfd *obfd; | |
988 | enum bfd_link_hash_type otype; | |
989 | bfd_vma osize; | |
990 | ||
991 | if (!config.warn_common) | |
b34976b6 | 992 | return TRUE; |
252b5132 | 993 | |
24f58f47 AM |
994 | name = h->root.string; |
995 | otype = h->type; | |
996 | if (otype == bfd_link_hash_common) | |
997 | { | |
998 | obfd = h->u.c.p->section->owner; | |
999 | osize = h->u.c.size; | |
1000 | } | |
1001 | else if (otype == bfd_link_hash_defined | |
1002 | || otype == bfd_link_hash_defweak) | |
1003 | { | |
1004 | obfd = h->u.def.section->owner; | |
1005 | osize = 0; | |
1006 | } | |
1007 | else | |
1008 | { | |
1009 | /* FIXME: It would nice if we could report the BFD which defined | |
1010 | an indirect symbol, but we don't have anywhere to store the | |
1011 | information. */ | |
1012 | obfd = NULL; | |
1013 | osize = 0; | |
1014 | } | |
1015 | ||
252b5132 RH |
1016 | if (ntype == bfd_link_hash_defined |
1017 | || ntype == bfd_link_hash_defweak | |
1018 | || ntype == bfd_link_hash_indirect) | |
1019 | { | |
1020 | ASSERT (otype == bfd_link_hash_common); | |
1021 | einfo (_("%B: warning: definition of `%T' overriding common\n"), | |
1022 | nbfd, name); | |
1023 | if (obfd != NULL) | |
1024 | einfo (_("%B: warning: common is here\n"), obfd); | |
1025 | } | |
1026 | else if (otype == bfd_link_hash_defined | |
1027 | || otype == bfd_link_hash_defweak | |
1028 | || otype == bfd_link_hash_indirect) | |
1029 | { | |
1030 | ASSERT (ntype == bfd_link_hash_common); | |
1031 | einfo (_("%B: warning: common of `%T' overridden by definition\n"), | |
1032 | nbfd, name); | |
1033 | if (obfd != NULL) | |
1034 | einfo (_("%B: warning: defined here\n"), obfd); | |
1035 | } | |
1036 | else | |
1037 | { | |
1038 | ASSERT (otype == bfd_link_hash_common && ntype == bfd_link_hash_common); | |
1039 | if (osize > nsize) | |
1040 | { | |
1041 | einfo (_("%B: warning: common of `%T' overridden by larger common\n"), | |
1042 | nbfd, name); | |
1043 | if (obfd != NULL) | |
1044 | einfo (_("%B: warning: larger common is here\n"), obfd); | |
1045 | } | |
1046 | else if (nsize > osize) | |
1047 | { | |
1048 | einfo (_("%B: warning: common of `%T' overriding smaller common\n"), | |
1049 | nbfd, name); | |
1050 | if (obfd != NULL) | |
1051 | einfo (_("%B: warning: smaller common is here\n"), obfd); | |
1052 | } | |
1053 | else | |
1054 | { | |
1055 | einfo (_("%B: warning: multiple common of `%T'\n"), nbfd, name); | |
1056 | if (obfd != NULL) | |
1057 | einfo (_("%B: warning: previous common is here\n"), obfd); | |
1058 | } | |
1059 | } | |
1060 | ||
b34976b6 | 1061 | return TRUE; |
252b5132 RH |
1062 | } |
1063 | ||
1064 | /* This is called when BFD has discovered a set element. H is the | |
1065 | entry in the linker hash table for the set. SECTION and VALUE | |
1066 | represent a value which should be added to the set. */ | |
1067 | ||
b34976b6 | 1068 | static bfd_boolean |
1579bae1 AM |
1069 | add_to_set (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1070 | struct bfd_link_hash_entry *h, | |
1071 | bfd_reloc_code_real_type reloc, | |
1072 | bfd *abfd, | |
1073 | asection *section, | |
1074 | bfd_vma value) | |
252b5132 RH |
1075 | { |
1076 | if (config.warn_constructors) | |
1077 | einfo (_("%P: warning: global constructor %s used\n"), | |
1078 | h->root.string); | |
1079 | ||
1080 | if (! config.build_constructors) | |
b34976b6 | 1081 | return TRUE; |
252b5132 | 1082 | |
1579bae1 | 1083 | ldctor_add_set_entry (h, reloc, NULL, section, value); |
252b5132 RH |
1084 | |
1085 | if (h->type == bfd_link_hash_new) | |
1086 | { | |
1087 | h->type = bfd_link_hash_undefined; | |
1088 | h->u.undef.abfd = abfd; | |
1089 | /* We don't call bfd_link_add_undef to add this to the list of | |
1090 | undefined symbols because we are going to define it | |
1091 | ourselves. */ | |
1092 | } | |
1093 | ||
b34976b6 | 1094 | return TRUE; |
252b5132 RH |
1095 | } |
1096 | ||
1097 | /* This is called when BFD has discovered a constructor. This is only | |
1098 | called for some object file formats--those which do not handle | |
1099 | constructors in some more clever fashion. This is similar to | |
1100 | adding an element to a set, but less general. */ | |
1101 | ||
b34976b6 | 1102 | static bfd_boolean |
1579bae1 AM |
1103 | constructor_callback (struct bfd_link_info *info, |
1104 | bfd_boolean constructor, | |
1105 | const char *name, | |
1106 | bfd *abfd, | |
1107 | asection *section, | |
1108 | bfd_vma value) | |
252b5132 RH |
1109 | { |
1110 | char *s; | |
1111 | struct bfd_link_hash_entry *h; | |
1112 | char set_name[1 + sizeof "__CTOR_LIST__"]; | |
1113 | ||
1114 | if (config.warn_constructors) | |
1115 | einfo (_("%P: warning: global constructor %s used\n"), name); | |
1116 | ||
1117 | if (! config.build_constructors) | |
b34976b6 | 1118 | return TRUE; |
252b5132 RH |
1119 | |
1120 | /* Ensure that BFD_RELOC_CTOR exists now, so that we can give a | |
1121 | useful error message. */ | |
0e86e20e | 1122 | if (bfd_reloc_type_lookup (info->output_bfd, BFD_RELOC_CTOR) == NULL |
e1fffbe6 | 1123 | && (info->relocatable |
252b5132 RH |
1124 | || bfd_reloc_type_lookup (abfd, BFD_RELOC_CTOR) == NULL)) |
1125 | einfo (_("%P%F: BFD backend error: BFD_RELOC_CTOR unsupported\n")); | |
1126 | ||
1127 | s = set_name; | |
1128 | if (bfd_get_symbol_leading_char (abfd) != '\0') | |
1129 | *s++ = bfd_get_symbol_leading_char (abfd); | |
1130 | if (constructor) | |
1131 | strcpy (s, "__CTOR_LIST__"); | |
1132 | else | |
1133 | strcpy (s, "__DTOR_LIST__"); | |
1134 | ||
b34976b6 | 1135 | h = bfd_link_hash_lookup (info->hash, set_name, TRUE, TRUE, TRUE); |
252b5132 RH |
1136 | if (h == (struct bfd_link_hash_entry *) NULL) |
1137 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); | |
1138 | if (h->type == bfd_link_hash_new) | |
1139 | { | |
1140 | h->type = bfd_link_hash_undefined; | |
1141 | h->u.undef.abfd = abfd; | |
1142 | /* We don't call bfd_link_add_undef to add this to the list of | |
1143 | undefined symbols because we are going to define it | |
1144 | ourselves. */ | |
1145 | } | |
1146 | ||
1147 | ldctor_add_set_entry (h, BFD_RELOC_CTOR, name, section, value); | |
b34976b6 | 1148 | return TRUE; |
252b5132 RH |
1149 | } |
1150 | ||
1151 | /* A structure used by warning_callback to pass information through | |
1152 | bfd_map_over_sections. */ | |
1153 | ||
0125cdf2 NC |
1154 | struct warning_callback_info |
1155 | { | |
b34976b6 | 1156 | bfd_boolean found; |
252b5132 RH |
1157 | const char *warning; |
1158 | const char *symbol; | |
1159 | asymbol **asymbols; | |
1160 | }; | |
1161 | ||
4c6d802e L |
1162 | /* Look through the relocs to see if we can find a plausible address |
1163 | for SYMBOL in ABFD. Return TRUE if found. Otherwise return FALSE. */ | |
1164 | ||
1165 | static bfd_boolean | |
1166 | symbol_warning (const char *warning, const char *symbol, bfd *abfd) | |
1167 | { | |
1168 | struct warning_callback_info cinfo; | |
1169 | ||
1170 | if (!bfd_generic_link_read_symbols (abfd)) | |
1171 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
1172 | ||
1173 | cinfo.found = FALSE; | |
1174 | cinfo.warning = warning; | |
1175 | cinfo.symbol = symbol; | |
1176 | cinfo.asymbols = bfd_get_outsymbols (abfd); | |
1177 | bfd_map_over_sections (abfd, warning_find_reloc, &cinfo); | |
1178 | return cinfo.found; | |
1179 | } | |
1180 | ||
252b5132 RH |
1181 | /* This is called when there is a reference to a warning symbol. */ |
1182 | ||
b34976b6 | 1183 | static bfd_boolean |
1579bae1 AM |
1184 | warning_callback (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1185 | const char *warning, | |
1186 | const char *symbol, | |
1187 | bfd *abfd, | |
1188 | asection *section, | |
1189 | bfd_vma address) | |
252b5132 RH |
1190 | { |
1191 | /* This is a hack to support warn_multiple_gp. FIXME: This should | |
1192 | have a cleaner interface, but what? */ | |
1193 | if (! config.warn_multiple_gp | |
1194 | && strcmp (warning, "using multiple gp values") == 0) | |
b34976b6 | 1195 | return TRUE; |
252b5132 RH |
1196 | |
1197 | if (section != NULL) | |
300475fe | 1198 | einfo ("%C: %s%s\n", abfd, section, address, _("warning: "), warning); |
252b5132 | 1199 | else if (abfd == NULL) |
300475fe | 1200 | einfo ("%P: %s%s\n", _("warning: "), warning); |
252b5132 | 1201 | else if (symbol == NULL) |
300475fe | 1202 | einfo ("%B: %s%s\n", abfd, _("warning: "), warning); |
4c6d802e | 1203 | else if (! symbol_warning (warning, symbol, abfd)) |
252b5132 | 1204 | { |
4c6d802e L |
1205 | bfd *b; |
1206 | /* Search all input files for a reference to SYMBOL. */ | |
c72f2fb2 | 1207 | for (b = info->input_bfds; b; b = b->link.next) |
4c6d802e L |
1208 | if (b != abfd && symbol_warning (warning, symbol, b)) |
1209 | return TRUE; | |
1210 | einfo ("%B: %s%s\n", abfd, _("warning: "), warning); | |
252b5132 RH |
1211 | } |
1212 | ||
b34976b6 | 1213 | return TRUE; |
252b5132 RH |
1214 | } |
1215 | ||
1216 | /* This is called by warning_callback for each section. It checks the | |
1217 | relocs of the section to see if it can find a reference to the | |
1218 | symbol which triggered the warning. If it can, it uses the reloc | |
1219 | to give an error message with a file and line number. */ | |
1220 | ||
1221 | static void | |
1579bae1 | 1222 | warning_find_reloc (bfd *abfd, asection *sec, void *iarg) |
252b5132 | 1223 | { |
1e9cc1c2 | 1224 | struct warning_callback_info *info = (struct warning_callback_info *) iarg; |
252b5132 RH |
1225 | long relsize; |
1226 | arelent **relpp; | |
1227 | long relcount; | |
1228 | arelent **p, **pend; | |
1229 | ||
1230 | if (info->found) | |
1231 | return; | |
1232 | ||
1233 | relsize = bfd_get_reloc_upper_bound (abfd, sec); | |
1234 | if (relsize < 0) | |
1235 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1236 | if (relsize == 0) | |
1237 | return; | |
1238 | ||
1e9cc1c2 | 1239 | relpp = (arelent **) xmalloc (relsize); |
252b5132 RH |
1240 | relcount = bfd_canonicalize_reloc (abfd, sec, relpp, info->asymbols); |
1241 | if (relcount < 0) | |
1242 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1243 | ||
1244 | p = relpp; | |
1245 | pend = p + relcount; | |
1246 | for (; p < pend && *p != NULL; p++) | |
1247 | { | |
1248 | arelent *q = *p; | |
1249 | ||
1250 | if (q->sym_ptr_ptr != NULL | |
1251 | && *q->sym_ptr_ptr != NULL | |
1252 | && strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), info->symbol) == 0) | |
1253 | { | |
1254 | /* We found a reloc for the symbol we are looking for. */ | |
300475fe HPN |
1255 | einfo ("%C: %s%s\n", abfd, sec, q->address, _("warning: "), |
1256 | info->warning); | |
b34976b6 | 1257 | info->found = TRUE; |
252b5132 RH |
1258 | break; |
1259 | } | |
1260 | } | |
1261 | ||
1262 | free (relpp); | |
1263 | } | |
1264 | ||
1265 | /* This is called when an undefined symbol is found. */ | |
1266 | ||
b34976b6 | 1267 | static bfd_boolean |
0e86e20e | 1268 | undefined_symbol (struct bfd_link_info *info, |
1579bae1 AM |
1269 | const char *name, |
1270 | bfd *abfd, | |
1271 | asection *section, | |
1272 | bfd_vma address, | |
0b28295d | 1273 | bfd_boolean error) |
252b5132 RH |
1274 | { |
1275 | static char *error_name; | |
1276 | static unsigned int error_count; | |
1277 | ||
1278 | #define MAX_ERRORS_IN_A_ROW 5 | |
1279 | ||
0e86e20e AM |
1280 | if (info->ignore_hash != NULL |
1281 | && bfd_hash_lookup (info->ignore_hash, name, FALSE, FALSE) != NULL) | |
1282 | return TRUE; | |
1283 | ||
252b5132 RH |
1284 | if (config.warn_once) |
1285 | { | |
252b5132 | 1286 | /* Only warn once about a particular undefined symbol. */ |
0e86e20e | 1287 | add_ignoresym (info, name); |
252b5132 RH |
1288 | } |
1289 | ||
1290 | /* We never print more than a reasonable number of errors in a row | |
1291 | for a single symbol. */ | |
1579bae1 | 1292 | if (error_name != NULL |
252b5132 RH |
1293 | && strcmp (name, error_name) == 0) |
1294 | ++error_count; | |
1295 | else | |
1296 | { | |
1297 | error_count = 0; | |
1579bae1 | 1298 | if (error_name != NULL) |
252b5132 | 1299 | free (error_name); |
d1b2b2dc | 1300 | error_name = xstrdup (name); |
252b5132 RH |
1301 | } |
1302 | ||
1303 | if (section != NULL) | |
1304 | { | |
1305 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1306 | { |
0b28295d ILT |
1307 | if (error) |
1308 | einfo (_("%X%C: undefined reference to `%T'\n"), | |
1309 | abfd, section, address, name); | |
1310 | else | |
1311 | einfo (_("%C: warning: undefined reference to `%T'\n"), | |
1312 | abfd, section, address, name); | |
b6f29aaa | 1313 | } |
252b5132 | 1314 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1315 | { |
1316 | if (error) | |
1317 | einfo (_("%X%D: more undefined references to `%T' follow\n"), | |
1318 | abfd, section, address, name); | |
1319 | else | |
1320 | einfo (_("%D: warning: more undefined references to `%T' follow\n"), | |
1321 | abfd, section, address, name); | |
1322 | } | |
1323 | else if (error) | |
1324 | einfo ("%X"); | |
252b5132 RH |
1325 | } |
1326 | else | |
1327 | { | |
1328 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1329 | { |
0b28295d ILT |
1330 | if (error) |
1331 | einfo (_("%X%B: undefined reference to `%T'\n"), | |
1332 | abfd, name); | |
1333 | else | |
1334 | einfo (_("%B: warning: undefined reference to `%T'\n"), | |
1335 | abfd, name); | |
b6f29aaa | 1336 | } |
252b5132 | 1337 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1338 | { |
1339 | if (error) | |
1340 | einfo (_("%X%B: more undefined references to `%T' follow\n"), | |
1341 | abfd, name); | |
1342 | else | |
1343 | einfo (_("%B: warning: more undefined references to `%T' follow\n"), | |
1344 | abfd, name); | |
1345 | } | |
1346 | else if (error) | |
1347 | einfo ("%X"); | |
252b5132 RH |
1348 | } |
1349 | ||
b34976b6 | 1350 | return TRUE; |
252b5132 RH |
1351 | } |
1352 | ||
8aae64e6 AO |
1353 | /* Counter to limit the number of relocation overflow error messages |
1354 | to print. Errors are printed as it is decremented. When it's | |
1355 | called and the counter is zero, a final message is printed | |
1356 | indicating more relocations were omitted. When it gets to -1, no | |
1357 | such errors are printed. If it's initially set to a value less | |
1358 | than -1, all such errors will be printed (--verbose does this). */ | |
1359 | ||
1360 | int overflow_cutoff_limit = 10; | |
1361 | ||
252b5132 RH |
1362 | /* This is called when a reloc overflows. */ |
1363 | ||
b34976b6 | 1364 | static bfd_boolean |
0e86e20e | 1365 | reloc_overflow (struct bfd_link_info *info, |
dfeffb9f | 1366 | struct bfd_link_hash_entry *entry, |
1579bae1 AM |
1367 | const char *name, |
1368 | const char *reloc_name, | |
1369 | bfd_vma addend, | |
1370 | bfd *abfd, | |
1371 | asection *section, | |
1372 | bfd_vma address) | |
252b5132 | 1373 | { |
8aae64e6 AO |
1374 | if (overflow_cutoff_limit == -1) |
1375 | return TRUE; | |
1376 | ||
270396f2 | 1377 | einfo ("%X%H:", abfd, section, address); |
8aae64e6 AO |
1378 | |
1379 | if (overflow_cutoff_limit >= 0 | |
1380 | && overflow_cutoff_limit-- == 0) | |
1381 | { | |
1382 | einfo (_(" additional relocation overflows omitted from the output\n")); | |
1383 | return TRUE; | |
1384 | } | |
1385 | ||
dfeffb9f L |
1386 | if (entry) |
1387 | { | |
1388 | while (entry->type == bfd_link_hash_indirect | |
1389 | || entry->type == bfd_link_hash_warning) | |
1390 | entry = entry->u.i.link; | |
1391 | switch (entry->type) | |
1392 | { | |
1393 | case bfd_link_hash_undefined: | |
1394 | case bfd_link_hash_undefweak: | |
1395 | einfo (_(" relocation truncated to fit: %s against undefined symbol `%T'"), | |
1396 | reloc_name, entry->root.string); | |
1397 | break; | |
1398 | case bfd_link_hash_defined: | |
1399 | case bfd_link_hash_defweak: | |
1400 | einfo (_(" relocation truncated to fit: %s against symbol `%T' defined in %A section in %B"), | |
1401 | reloc_name, entry->root.string, | |
a6e1b90f L |
1402 | entry->u.def.section, |
1403 | entry->u.def.section == bfd_abs_section_ptr | |
0e86e20e | 1404 | ? info->output_bfd : entry->u.def.section->owner); |
dfeffb9f L |
1405 | break; |
1406 | default: | |
1407 | abort (); | |
1408 | break; | |
1409 | } | |
1410 | } | |
1411 | else | |
1412 | einfo (_(" relocation truncated to fit: %s against `%T'"), | |
1413 | reloc_name, name); | |
252b5132 RH |
1414 | if (addend != 0) |
1415 | einfo ("+%v", addend); | |
1416 | einfo ("\n"); | |
b34976b6 | 1417 | return TRUE; |
252b5132 RH |
1418 | } |
1419 | ||
1420 | /* This is called when a dangerous relocation is made. */ | |
1421 | ||
b34976b6 | 1422 | static bfd_boolean |
1579bae1 AM |
1423 | reloc_dangerous (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1424 | const char *message, | |
1425 | bfd *abfd, | |
1426 | asection *section, | |
1427 | bfd_vma address) | |
252b5132 | 1428 | { |
270396f2 | 1429 | einfo (_("%X%H: dangerous relocation: %s\n"), |
e1fffbe6 | 1430 | abfd, section, address, message); |
b34976b6 | 1431 | return TRUE; |
252b5132 RH |
1432 | } |
1433 | ||
1434 | /* This is called when a reloc is being generated attached to a symbol | |
1435 | that is not being output. */ | |
1436 | ||
b34976b6 | 1437 | static bfd_boolean |
1579bae1 AM |
1438 | unattached_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1439 | const char *name, | |
1440 | bfd *abfd, | |
1441 | asection *section, | |
1442 | bfd_vma address) | |
252b5132 | 1443 | { |
270396f2 | 1444 | einfo (_("%X%H: reloc refers to symbol `%T' which is not being output\n"), |
e1fffbe6 | 1445 | abfd, section, address, name); |
b34976b6 | 1446 | return TRUE; |
252b5132 RH |
1447 | } |
1448 | ||
1449 | /* This is called if link_info.notice_all is set, or when a symbol in | |
1450 | link_info.notice_hash is found. Symbols are put in notice_hash | |
5d3236ee DK |
1451 | using the -y option, while notice_all is set if the --cref option |
1452 | has been supplied, or if there are any NOCROSSREFS sections in the | |
1453 | linker script; and if plugins are active, since they need to monitor | |
1454 | all references from non-IR files. */ | |
252b5132 | 1455 | |
b34976b6 | 1456 | static bfd_boolean |
1579bae1 | 1457 | notice (struct bfd_link_info *info, |
35ed3f94 | 1458 | struct bfd_link_hash_entry *h, |
46135103 | 1459 | struct bfd_link_hash_entry *inh ATTRIBUTE_UNUSED, |
1579bae1 AM |
1460 | bfd *abfd, |
1461 | asection *section, | |
16d96b5b | 1462 | bfd_vma value, |
46135103 | 1463 | flagword flags ATTRIBUTE_UNUSED) |
252b5132 | 1464 | { |
35ed3f94 AM |
1465 | const char *name; |
1466 | ||
1467 | if (h == NULL) | |
5061a885 AM |
1468 | { |
1469 | if (command_line.cref || nocrossref_list != NULL) | |
1e9cc1c2 | 1470 | return handle_asneeded_cref (abfd, (enum notice_asneeded_action) value); |
5061a885 AM |
1471 | return TRUE; |
1472 | } | |
1473 | ||
35ed3f94 | 1474 | name = h->root.string; |
5d3236ee | 1475 | if (info->notice_hash != NULL |
9e2278f5 | 1476 | && bfd_hash_lookup (info->notice_hash, name, FALSE, FALSE) != NULL) |
252b5132 RH |
1477 | { |
1478 | if (bfd_is_und_section (section)) | |
1479 | einfo ("%B: reference to %s\n", abfd, name); | |
1480 | else | |
1481 | einfo ("%B: definition of %s\n", abfd, name); | |
1482 | } | |
1483 | ||
1484 | if (command_line.cref || nocrossref_list != NULL) | |
1485 | add_cref (name, abfd, section, value); | |
1486 | ||
b34976b6 | 1487 | return TRUE; |
252b5132 | 1488 | } |