Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Main program of GNU linker. |
4e5bae56 | 2 | Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
aa820537 | 3 | 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | Written by Steve Chamberlain steve@cygnus.com | |
6 | ||
f96b4a7b | 7 | This file is part of the GNU Binutils. |
252b5132 | 8 | |
f96b4a7b | 9 | This program is free software; you can redistribute it and/or modify |
2fa9fc65 | 10 | it under the terms of the GNU General Public License as published by |
f96b4a7b NC |
11 | the Free Software Foundation; either version 3 of the License, or |
12 | (at your option) any later version. | |
252b5132 | 13 | |
f96b4a7b | 14 | This program is distributed in the hope that it will be useful, |
2fa9fc65 NC |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
252b5132 | 18 | |
2fa9fc65 | 19 | You should have received a copy of the GNU General Public License |
f96b4a7b NC |
20 | along with this program; if not, write to the Free Software |
21 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
22 | MA 02110-1301, USA. */ | |
252b5132 | 23 | |
252b5132 | 24 | #include "sysdep.h" |
3db64b00 | 25 | #include "bfd.h" |
3882b010 | 26 | #include "safe-ctype.h" |
252b5132 RH |
27 | #include "libiberty.h" |
28 | #include "progress.h" | |
29 | #include "bfdlink.h" | |
5af11cab | 30 | #include "filenames.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 RH |
42 | #include "ldctor.h" |
43 | ||
0125cdf2 | 44 | /* Somewhere above, sys/stat.h got included. */ |
252b5132 RH |
45 | #if !defined(S_ISDIR) && defined(S_IFDIR) |
46 | #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) | |
47 | #endif | |
48 | ||
49 | #include <string.h> | |
50 | ||
51 | #ifdef HAVE_SBRK | |
502bdb00 | 52 | #if !HAVE_DECL_SBRK |
1579bae1 | 53 | extern void *sbrk (); |
252b5132 RH |
54 | #endif |
55 | #endif | |
56 | ||
9c8ebd6a DJ |
57 | #ifndef TARGET_SYSTEM_ROOT |
58 | #define TARGET_SYSTEM_ROOT "" | |
59 | #endif | |
60 | ||
252b5132 RH |
61 | /* EXPORTS */ |
62 | ||
53d25da6 AM |
63 | FILE *saved_script_handle = NULL; |
64 | FILE *previous_script_handle = NULL; | |
65 | bfd_boolean force_make_executable = FALSE; | |
66 | ||
252b5132 RH |
67 | char *default_target; |
68 | const char *output_filename = "a.out"; | |
69 | ||
70 | /* Name this program was invoked by. */ | |
71 | char *program_name; | |
72 | ||
9c8ebd6a | 73 | /* The prefix for system library directories. */ |
e2243057 | 74 | const char *ld_sysroot; |
9c8ebd6a | 75 | |
3fe38064 NC |
76 | /* The canonical representation of ld_sysroot. */ |
77 | char * ld_canon_sysroot; | |
78 | int ld_canon_sysroot_len; | |
79 | ||
252b5132 RH |
80 | /* Set by -G argument, for MIPS ECOFF target. */ |
81 | int g_switch_value = 8; | |
82 | ||
83 | /* Nonzero means print names of input files as processed. */ | |
b34976b6 | 84 | bfd_boolean trace_files; |
252b5132 RH |
85 | |
86 | /* Nonzero means same, but note open failures, too. */ | |
b34976b6 | 87 | bfd_boolean trace_file_tries; |
252b5132 RH |
88 | |
89 | /* Nonzero means version number was printed, so exit successfully | |
90 | instead of complaining if no input files are given. */ | |
b34976b6 | 91 | bfd_boolean version_printed; |
252b5132 RH |
92 | |
93 | /* Nonzero means link in every member of an archive. */ | |
b34976b6 | 94 | bfd_boolean whole_archive; |
252b5132 | 95 | |
ddbb8a31 NC |
96 | /* True means only create DT_NEEDED entries for dynamic libraries |
97 | if they actually satisfy some reference in a regular object. */ | |
98 | bfd_boolean add_DT_NEEDED_for_regular; | |
99 | ||
100 | /* True means create DT_NEEDED entries for dynamic libraries that | |
101 | are DT_NEEDED by dynamic libraries specifically mentioned on | |
102 | the command line. */ | |
103 | bfd_boolean add_DT_NEEDED_for_dynamic; | |
e56f61be | 104 | |
b34976b6 AM |
105 | /* TRUE if we should demangle symbol names. */ |
106 | bfd_boolean demangling; | |
252b5132 RH |
107 | |
108 | args_type command_line; | |
109 | ||
110 | ld_config_type config; | |
111 | ||
bcaa7b3e L |
112 | sort_type sort_section; |
113 | ||
e2243057 RS |
114 | static const char *get_sysroot |
115 | (int, char **); | |
0125cdf2 | 116 | static char *get_emulation |
1579bae1 | 117 | (int, char **); |
0125cdf2 | 118 | static bfd_boolean add_archive_element |
1579bae1 | 119 | (struct bfd_link_info *, bfd *, const char *); |
0125cdf2 | 120 | static bfd_boolean multiple_definition |
1579bae1 AM |
121 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma, |
122 | bfd *, asection *, bfd_vma); | |
0125cdf2 | 123 | static bfd_boolean multiple_common |
1579bae1 AM |
124 | (struct bfd_link_info *, const char *, bfd *, enum bfd_link_hash_type, |
125 | bfd_vma, bfd *, enum bfd_link_hash_type, bfd_vma); | |
0125cdf2 | 126 | static bfd_boolean add_to_set |
1579bae1 AM |
127 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
128 | bfd_reloc_code_real_type, bfd *, asection *, bfd_vma); | |
0125cdf2 | 129 | static bfd_boolean constructor_callback |
1579bae1 AM |
130 | (struct bfd_link_info *, bfd_boolean, const char *, bfd *, |
131 | asection *, bfd_vma); | |
0125cdf2 | 132 | static bfd_boolean warning_callback |
1579bae1 AM |
133 | (struct bfd_link_info *, const char *, const char *, bfd *, |
134 | asection *, bfd_vma); | |
0125cdf2 | 135 | static void warning_find_reloc |
1579bae1 | 136 | (bfd *, asection *, void *); |
0125cdf2 | 137 | static bfd_boolean undefined_symbol |
1579bae1 AM |
138 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma, |
139 | bfd_boolean); | |
0125cdf2 | 140 | static bfd_boolean reloc_overflow |
dfeffb9f L |
141 | (struct bfd_link_info *, struct bfd_link_hash_entry *, const char *, |
142 | const char *, bfd_vma, bfd *, asection *, bfd_vma); | |
0125cdf2 | 143 | static bfd_boolean reloc_dangerous |
1579bae1 | 144 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
0125cdf2 | 145 | static bfd_boolean unattached_reloc |
1579bae1 | 146 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
0125cdf2 | 147 | static bfd_boolean notice |
1579bae1 | 148 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
0125cdf2 NC |
149 | |
150 | static struct bfd_link_callbacks link_callbacks = | |
151 | { | |
252b5132 RH |
152 | add_archive_element, |
153 | multiple_definition, | |
154 | multiple_common, | |
155 | add_to_set, | |
156 | constructor_callback, | |
157 | warning_callback, | |
158 | undefined_symbol, | |
159 | reloc_overflow, | |
160 | reloc_dangerous, | |
161 | unattached_reloc, | |
e1fffbe6 | 162 | notice, |
2889e75b | 163 | einfo, |
49fa1e15 AM |
164 | info_msg, |
165 | minfo, | |
2889e75b | 166 | ldlang_override_segment_assignment |
252b5132 RH |
167 | }; |
168 | ||
169 | struct bfd_link_info link_info; | |
170 | \f | |
171 | static void | |
1579bae1 | 172 | remove_output (void) |
252b5132 | 173 | { |
6d5e62f8 | 174 | if (output_filename) |
252b5132 | 175 | { |
f13a99db AM |
176 | if (link_info.output_bfd) |
177 | bfd_cache_close (link_info.output_bfd); | |
252b5132 | 178 | if (delete_output_file_on_failure) |
bb14f524 | 179 | unlink_if_ordinary (output_filename); |
252b5132 RH |
180 | } |
181 | } | |
182 | ||
183 | int | |
1579bae1 | 184 | main (int argc, char **argv) |
252b5132 RH |
185 | { |
186 | char *emulation; | |
187 | long start_time = get_run_time (); | |
188 | ||
189 | #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) | |
190 | setlocale (LC_MESSAGES, ""); | |
3882b010 L |
191 | #endif |
192 | #if defined (HAVE_SETLOCALE) | |
193 | setlocale (LC_CTYPE, ""); | |
252b5132 RH |
194 | #endif |
195 | bindtextdomain (PACKAGE, LOCALEDIR); | |
196 | textdomain (PACKAGE); | |
197 | ||
198 | program_name = argv[0]; | |
199 | xmalloc_set_program_name (program_name); | |
200 | ||
201 | START_PROGRESS (program_name, 0); | |
202 | ||
869b9d07 MM |
203 | expandargv (&argc, &argv); |
204 | ||
252b5132 RH |
205 | bfd_init (); |
206 | ||
207 | bfd_set_error_program_name (program_name); | |
208 | ||
209 | xatexit (remove_output); | |
210 | ||
e2243057 RS |
211 | /* Set up the sysroot directory. */ |
212 | ld_sysroot = get_sysroot (argc, argv); | |
213 | if (*ld_sysroot) | |
9c8ebd6a | 214 | { |
e2243057 | 215 | if (*TARGET_SYSTEM_ROOT == 0) |
9c8ebd6a | 216 | { |
70487fb2 | 217 | einfo ("%P%F: this linker was not configured to use sysroots\n"); |
e2243057 | 218 | ld_sysroot = ""; |
0125cdf2 | 219 | } |
e2243057 RS |
220 | else |
221 | ld_canon_sysroot = lrealpath (ld_sysroot); | |
0125cdf2 | 222 | } |
3fe38064 NC |
223 | if (ld_canon_sysroot) |
224 | ld_canon_sysroot_len = strlen (ld_canon_sysroot); | |
225 | else | |
226 | ld_canon_sysroot_len = -1; | |
227 | ||
252b5132 RH |
228 | /* Set the default BFD target based on the configured target. Doing |
229 | this permits the linker to be configured for a particular target, | |
230 | and linked against a shared BFD library which was configured for | |
231 | a different target. The macro TARGET is defined by Makefile. */ | |
232 | if (! bfd_set_default_target (TARGET)) | |
233 | { | |
234 | einfo (_("%X%P: can't set BFD default target to `%s': %E\n"), TARGET); | |
235 | xexit (1); | |
236 | } | |
237 | ||
b47c4208 AM |
238 | #if YYDEBUG |
239 | { | |
240 | extern int yydebug; | |
241 | yydebug = 1; | |
242 | } | |
243 | #endif | |
244 | ||
b34976b6 | 245 | config.build_constructors = TRUE; |
c76308d2 | 246 | config.rpath_separator = ':'; |
a854a4a7 AM |
247 | config.split_by_reloc = (unsigned) -1; |
248 | config.split_by_file = (bfd_size_type) -1; | |
3b95049e AM |
249 | config.make_executable = TRUE; |
250 | config.magic_demand_paged = TRUE; | |
251 | config.text_read_only = TRUE; | |
252 | ||
b34976b6 | 253 | command_line.warn_mismatch = TRUE; |
fe7929ce | 254 | command_line.warn_search_mismatch = TRUE; |
02b0b1aa | 255 | command_line.check_section_addresses = -1; |
bcaa7b3e | 256 | |
252b5132 RH |
257 | /* We initialize DEMANGLING based on the environment variable |
258 | COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the | |
259 | output of the linker, unless COLLECT_NO_DEMANGLE is set in the | |
260 | environment. Acting the same way here lets us provide the same | |
261 | interface by default. */ | |
262 | demangling = getenv ("COLLECT_NO_DEMANGLE") == NULL; | |
263 | ||
b34976b6 | 264 | link_info.allow_undefined_version = TRUE; |
b5067602 | 265 | link_info.keep_memory = TRUE; |
b5067602 | 266 | link_info.combreloc = TRUE; |
d5cd3933 | 267 | link_info.strip_discarded = TRUE; |
fdc90cb4 | 268 | link_info.emit_hash = TRUE; |
a9a4c53e AM |
269 | link_info.callbacks = &link_callbacks; |
270 | link_info.input_bfds_tail = &link_info.input_bfds; | |
3dbf70a2 MM |
271 | /* SVR4 linkers seem to set DT_INIT and DT_FINI based on magic _init |
272 | and _fini symbols. We are compatible. */ | |
273 | link_info.init_function = "_init"; | |
274 | link_info.fini_function = "_fini"; | |
a9a4c53e | 275 | link_info.relax_pass = 1; |
e0076ab3 | 276 | link_info.pei386_auto_import = -1; |
db6751f2 | 277 | link_info.spare_dynamic_tags = 5; |
967928e9 | 278 | link_info.path_separator = ':'; |
24718e3b | 279 | |
252b5132 | 280 | ldfile_add_arch (""); |
252b5132 RH |
281 | emulation = get_emulation (argc, argv); |
282 | ldemul_choose_mode (emulation); | |
742aeb63 | 283 | default_target = ldemul_choose_target (argc, argv); |
8be573a7 AM |
284 | config.maxpagesize = bfd_emul_get_maxpagesize (default_target); |
285 | config.commonpagesize = bfd_emul_get_commonpagesize (default_target); | |
252b5132 RH |
286 | lang_init (); |
287 | ldemul_before_parse (); | |
b34976b6 | 288 | lang_has_input_file = FALSE; |
252b5132 RH |
289 | parse_args (argc, argv); |
290 | ||
2d643429 NC |
291 | if (config.hash_table_size != 0) |
292 | bfd_hash_set_default_size (config.hash_table_size); | |
293 | ||
252b5132 RH |
294 | ldemul_set_symbols (); |
295 | ||
1049f94e | 296 | if (link_info.relocatable) |
252b5132 | 297 | { |
02b0b1aa NS |
298 | if (command_line.check_section_addresses < 0) |
299 | command_line.check_section_addresses = 0; | |
252b5132 RH |
300 | if (link_info.shared) |
301 | einfo (_("%P%F: -r and -shared may not be used together\n")); | |
302 | } | |
303 | ||
d8cf8b51 L |
304 | /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data, |
305 | --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and | |
306 | --dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are | |
307 | for shared libraries. -Bsymbolic overrides all others and vice | |
308 | versa. */ | |
309 | switch (command_line.symbolic) | |
310 | { | |
311 | case symbolic_unset: | |
312 | break; | |
313 | case symbolic: | |
314 | /* -Bsymbolic is for shared library only. */ | |
315 | if (link_info.shared) | |
316 | { | |
317 | link_info.symbolic = TRUE; | |
318 | /* Should we free the unused memory? */ | |
319 | link_info.dynamic_list = NULL; | |
320 | command_line.dynamic_list = dynamic_list_unset; | |
321 | } | |
322 | break; | |
323 | case symbolic_functions: | |
324 | /* -Bsymbolic-functions is for shared library only. */ | |
325 | if (link_info.shared) | |
326 | command_line.dynamic_list = dynamic_list_data; | |
327 | break; | |
328 | } | |
329 | ||
330 | switch (command_line.dynamic_list) | |
331 | { | |
332 | case dynamic_list_unset: | |
333 | break; | |
334 | case dynamic_list_data: | |
335 | link_info.dynamic_data = TRUE; | |
336 | case dynamic_list: | |
337 | link_info.dynamic = TRUE; | |
338 | break; | |
339 | } | |
340 | ||
7333607e JJ |
341 | if (! link_info.shared) |
342 | { | |
343 | if (command_line.filter_shlib) | |
e97cb84f | 344 | einfo (_("%P%F: -F may not be used without -shared\n")); |
7333607e | 345 | if (command_line.auxiliary_filters) |
e97cb84f | 346 | einfo (_("%P%F: -f may not be used without -shared\n")); |
7333607e JJ |
347 | } |
348 | ||
36af4a4e JJ |
349 | if (! link_info.shared || link_info.pie) |
350 | link_info.executable = TRUE; | |
351 | ||
252b5132 RH |
352 | /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I |
353 | don't see how else this can be handled, since in this case we | |
354 | must preserve all externally visible symbols. */ | |
1049f94e | 355 | if (link_info.relocatable && link_info.strip == strip_all) |
252b5132 RH |
356 | { |
357 | link_info.strip = strip_debugger; | |
f5fa8ca2 | 358 | if (link_info.discard == discard_sec_merge) |
252b5132 RH |
359 | link_info.discard = discard_all; |
360 | } | |
361 | ||
14be8564 L |
362 | /* If we have not already opened and parsed a linker script, |
363 | try the default script from command line first. */ | |
364 | if (saved_script_handle == NULL | |
365 | && command_line.default_script != NULL) | |
366 | { | |
367 | ldfile_open_command_file (command_line.default_script); | |
368 | parser_input = input_script; | |
369 | yyparse (); | |
370 | } | |
371 | ||
b9a8de1e NC |
372 | /* If we have not already opened and parsed a linker script |
373 | read the emulation's appropriate default script. */ | |
b90e1c6f | 374 | if (saved_script_handle == NULL) |
252b5132 | 375 | { |
252b5132 | 376 | int isfile; |
b7a26f91 | 377 | char *s = ldemul_get_script (&isfile); |
252b5132 RH |
378 | |
379 | if (isfile) | |
7d24f02c | 380 | ldfile_open_default_command_file (s); |
252b5132 | 381 | else |
b7a26f91 | 382 | { |
252b5132 RH |
383 | lex_string = s; |
384 | lex_redirect (s); | |
385 | } | |
386 | parser_input = input_script; | |
387 | yyparse (); | |
388 | lex_string = NULL; | |
389 | } | |
390 | ||
b9a8de1e NC |
391 | if (trace_file_tries) |
392 | { | |
9cb61eab AM |
393 | if (saved_script_handle) |
394 | info_msg (_("using external linker script:")); | |
395 | else | |
396 | info_msg (_("using internal linker script:")); | |
397 | info_msg ("\n==================================================\n"); | |
b9a8de1e NC |
398 | |
399 | if (saved_script_handle) | |
400 | { | |
74699268 | 401 | static const int ld_bufsz = 8193; |
b9a8de1e | 402 | size_t n; |
1e9cc1c2 | 403 | char *buf = (char *) xmalloc (ld_bufsz); |
b9a8de1e NC |
404 | |
405 | rewind (saved_script_handle); | |
74699268 | 406 | while ((n = fread (buf, 1, ld_bufsz - 1, saved_script_handle)) > 0) |
b9a8de1e | 407 | { |
b7a26f91 | 408 | buf[n] = 0; |
b9a8de1e NC |
409 | info_msg (buf); |
410 | } | |
411 | rewind (saved_script_handle); | |
412 | free (buf); | |
413 | } | |
414 | else | |
415 | { | |
416 | int isfile; | |
417 | ||
b7a26f91 | 418 | info_msg (ldemul_get_script (&isfile)); |
b9a8de1e | 419 | } |
b7a26f91 | 420 | |
b9a8de1e NC |
421 | info_msg ("\n==================================================\n"); |
422 | } | |
423 | ||
252b5132 RH |
424 | lang_final (); |
425 | ||
b34976b6 | 426 | if (!lang_has_input_file) |
252b5132 RH |
427 | { |
428 | if (version_printed) | |
429 | xexit (0); | |
430 | einfo (_("%P%F: no input files\n")); | |
431 | } | |
432 | ||
433 | if (trace_files) | |
0125cdf2 | 434 | info_msg (_("%P: mode %s\n"), emulation); |
252b5132 RH |
435 | |
436 | ldemul_after_parse (); | |
437 | ||
252b5132 RH |
438 | if (config.map_filename) |
439 | { | |
440 | if (strcmp (config.map_filename, "-") == 0) | |
441 | { | |
442 | config.map_file = stdout; | |
443 | } | |
444 | else | |
445 | { | |
446 | config.map_file = fopen (config.map_filename, FOPEN_WT); | |
447 | if (config.map_file == (FILE *) NULL) | |
448 | { | |
449 | bfd_set_error (bfd_error_system_call); | |
450 | einfo (_("%P%F: cannot open map file %s: %E\n"), | |
451 | config.map_filename); | |
452 | } | |
453 | } | |
454 | } | |
455 | ||
252b5132 RH |
456 | lang_process (); |
457 | ||
458 | /* Print error messages for any missing symbols, for any warning | |
6d5e62f8 | 459 | symbols, and possibly multiple definitions. */ |
1049f94e | 460 | if (link_info.relocatable) |
f13a99db | 461 | link_info.output_bfd->flags &= ~EXEC_P; |
252b5132 | 462 | else |
f13a99db | 463 | link_info.output_bfd->flags |= EXEC_P; |
252b5132 RH |
464 | |
465 | ldwrite (); | |
466 | ||
467 | if (config.map_file != NULL) | |
468 | lang_map (); | |
469 | if (command_line.cref) | |
470 | output_cref (config.map_file != NULL ? config.map_file : stdout); | |
471 | if (nocrossref_list != NULL) | |
472 | check_nocrossrefs (); | |
473 | ||
750877ba L |
474 | lang_finish (); |
475 | ||
1049f94e | 476 | /* Even if we're producing relocatable output, some non-fatal errors should |
252b5132 | 477 | be reported in the exit status. (What non-fatal errors, if any, do we |
1049f94e | 478 | want to ignore for relocatable output?) */ |
b34976b6 | 479 | if (!config.make_executable && !force_make_executable) |
252b5132 | 480 | { |
b34976b6 | 481 | if (trace_files) |
0125cdf2 NC |
482 | einfo (_("%P: link errors found, deleting executable `%s'\n"), |
483 | output_filename); | |
252b5132 RH |
484 | |
485 | /* The file will be removed by remove_output. */ | |
252b5132 RH |
486 | xexit (1); |
487 | } | |
488 | else | |
489 | { | |
f13a99db AM |
490 | if (! bfd_close (link_info.output_bfd)) |
491 | einfo (_("%F%B: final close failed: %E\n"), link_info.output_bfd); | |
252b5132 RH |
492 | |
493 | /* If the --force-exe-suffix is enabled, and we're making an | |
6d5e62f8 KH |
494 | executable file and it doesn't end in .exe, copy it to one |
495 | which does. */ | |
1049f94e | 496 | if (! link_info.relocatable && command_line.force_exe_suffix) |
252b5132 RH |
497 | { |
498 | int len = strlen (output_filename); | |
0125cdf2 | 499 | |
6d5e62f8 | 500 | if (len < 4 |
252b5132 RH |
501 | || (strcasecmp (output_filename + len - 4, ".exe") != 0 |
502 | && strcasecmp (output_filename + len - 4, ".dll") != 0)) | |
503 | { | |
504 | FILE *src; | |
505 | FILE *dst; | |
506 | const int bsize = 4096; | |
1e9cc1c2 | 507 | char *buf = (char *) xmalloc (bsize); |
252b5132 | 508 | int l; |
1e9cc1c2 | 509 | char *dst_name = (char *) xmalloc (len + 5); |
0125cdf2 | 510 | |
252b5132 RH |
511 | strcpy (dst_name, output_filename); |
512 | strcat (dst_name, ".exe"); | |
513 | src = fopen (output_filename, FOPEN_RB); | |
514 | dst = fopen (dst_name, FOPEN_WB); | |
515 | ||
516 | if (!src) | |
1579bae1 AM |
517 | einfo (_("%X%P: unable to open for source of copy `%s'\n"), |
518 | output_filename); | |
252b5132 | 519 | if (!dst) |
1579bae1 AM |
520 | einfo (_("%X%P: unable to open for destination of copy `%s'\n"), |
521 | dst_name); | |
252b5132 RH |
522 | while ((l = fread (buf, 1, bsize, src)) > 0) |
523 | { | |
524 | int done = fwrite (buf, 1, l, dst); | |
0125cdf2 | 525 | |
252b5132 | 526 | if (done != l) |
0125cdf2 | 527 | einfo (_("%P: Error writing file `%s'\n"), dst_name); |
252b5132 | 528 | } |
0125cdf2 | 529 | |
252b5132 RH |
530 | fclose (src); |
531 | if (fclose (dst) == EOF) | |
0125cdf2 | 532 | einfo (_("%P: Error closing file `%s'\n"), dst_name); |
252b5132 RH |
533 | free (dst_name); |
534 | free (buf); | |
535 | } | |
536 | } | |
537 | } | |
538 | ||
539 | END_PROGRESS (program_name); | |
540 | ||
541 | if (config.stats) | |
542 | { | |
543 | #ifdef HAVE_SBRK | |
1e9cc1c2 | 544 | char *lim = (char *) sbrk (0); |
252b5132 RH |
545 | #endif |
546 | long run_time = get_run_time () - start_time; | |
547 | ||
548 | fprintf (stderr, _("%s: total time in link: %ld.%06ld\n"), | |
549 | program_name, run_time / 1000000, run_time % 1000000); | |
550 | #ifdef HAVE_SBRK | |
551 | fprintf (stderr, _("%s: data size %ld\n"), program_name, | |
552 | (long) (lim - (char *) &environ)); | |
553 | #endif | |
554 | } | |
555 | ||
556 | /* Prevent remove_output from doing anything, after a successful link. */ | |
557 | output_filename = NULL; | |
558 | ||
559 | xexit (0); | |
560 | return 0; | |
561 | } | |
562 | ||
e2243057 RS |
563 | /* If the configured sysroot is relocatable, try relocating it based on |
564 | default prefix FROM. Return the relocated directory if it exists, | |
565 | otherwise return null. */ | |
566 | ||
567 | static char * | |
568 | get_relative_sysroot (const char *from ATTRIBUTE_UNUSED) | |
569 | { | |
570 | #ifdef TARGET_SYSTEM_ROOT_RELOCATABLE | |
571 | char *path; | |
572 | struct stat s; | |
573 | ||
574 | path = make_relative_prefix (program_name, from, TARGET_SYSTEM_ROOT); | |
575 | if (path) | |
576 | { | |
577 | if (stat (path, &s) == 0 && S_ISDIR (s.st_mode)) | |
578 | return path; | |
579 | free (path); | |
580 | } | |
581 | #endif | |
582 | return 0; | |
583 | } | |
584 | ||
585 | /* Return the sysroot directory. Return "" if no sysroot is being used. */ | |
586 | ||
587 | static const char * | |
588 | get_sysroot (int argc, char **argv) | |
589 | { | |
590 | int i; | |
591 | const char *path; | |
592 | ||
593 | for (i = 1; i < argc; i++) | |
0112cd26 | 594 | if (CONST_STRNEQ (argv[i], "--sysroot=")) |
e2243057 RS |
595 | return argv[i] + strlen ("--sysroot="); |
596 | ||
597 | path = get_relative_sysroot (BINDIR); | |
598 | if (path) | |
599 | return path; | |
600 | ||
601 | path = get_relative_sysroot (TOOLBINDIR); | |
602 | if (path) | |
603 | return path; | |
604 | ||
605 | return TARGET_SYSTEM_ROOT; | |
606 | } | |
607 | ||
252b5132 RH |
608 | /* We need to find any explicitly given emulation in order to initialize the |
609 | state that's needed by the lex&yacc argument parser (parse_args). */ | |
610 | ||
611 | static char * | |
1579bae1 | 612 | get_emulation (int argc, char **argv) |
252b5132 RH |
613 | { |
614 | char *emulation; | |
615 | int i; | |
616 | ||
617 | emulation = getenv (EMULATION_ENVIRON); | |
618 | if (emulation == NULL) | |
619 | emulation = DEFAULT_EMULATION; | |
620 | ||
621 | for (i = 1; i < argc; i++) | |
622 | { | |
0112cd26 | 623 | if (CONST_STRNEQ (argv[i], "-m")) |
252b5132 RH |
624 | { |
625 | if (argv[i][2] == '\0') | |
626 | { | |
627 | /* -m EMUL */ | |
628 | if (i < argc - 1) | |
629 | { | |
630 | emulation = argv[i + 1]; | |
631 | i++; | |
632 | } | |
633 | else | |
0125cdf2 | 634 | einfo (_("%P%F: missing argument to -m\n")); |
252b5132 RH |
635 | } |
636 | else if (strcmp (argv[i], "-mips1") == 0 | |
637 | || strcmp (argv[i], "-mips2") == 0 | |
638 | || strcmp (argv[i], "-mips3") == 0 | |
d1cf510e | 639 | || strcmp (argv[i], "-mips4") == 0 |
6f33421c CD |
640 | || strcmp (argv[i], "-mips5") == 0 |
641 | || strcmp (argv[i], "-mips32") == 0 | |
642 | || strcmp (argv[i], "-mips32r2") == 0 | |
5f74bc13 CD |
643 | || strcmp (argv[i], "-mips64") == 0 |
644 | || strcmp (argv[i], "-mips64r2") == 0) | |
252b5132 | 645 | { |
31d677f9 | 646 | /* FIXME: The arguments -mips1, -mips2, -mips3, etc. are |
252b5132 RH |
647 | passed to the linker by some MIPS compilers. They |
648 | generally tell the linker to use a slightly different | |
649 | library path. Perhaps someday these should be | |
650 | implemented as emulations; until then, we just ignore | |
651 | the arguments and hope that nobody ever creates | |
652 | emulations named ips1, ips2 or ips3. */ | |
653 | } | |
654 | else if (strcmp (argv[i], "-m486") == 0) | |
655 | { | |
656 | /* FIXME: The argument -m486 is passed to the linker on | |
657 | some Linux systems. Hope that nobody creates an | |
658 | emulation named 486. */ | |
659 | } | |
660 | else | |
661 | { | |
662 | /* -mEMUL */ | |
663 | emulation = &argv[i][2]; | |
664 | } | |
665 | } | |
666 | } | |
667 | ||
668 | return emulation; | |
669 | } | |
670 | ||
252b5132 | 671 | void |
1579bae1 | 672 | add_ysym (const char *name) |
252b5132 | 673 | { |
1579bae1 | 674 | if (link_info.notice_hash == NULL) |
252b5132 | 675 | { |
1e9cc1c2 NC |
676 | link_info.notice_hash = |
677 | (struct bfd_hash_table *) xmalloc (sizeof (struct bfd_hash_table)); | |
66eb6687 AM |
678 | if (!bfd_hash_table_init_n (link_info.notice_hash, |
679 | bfd_hash_newfunc, | |
680 | sizeof (struct bfd_hash_entry), | |
681 | 61)) | |
252b5132 | 682 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); |
6d5e62f8 | 683 | } |
252b5132 | 684 | |
1579bae1 | 685 | if (bfd_hash_lookup (link_info.notice_hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
686 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); |
687 | } | |
688 | ||
689 | /* Record a symbol to be wrapped, from the --wrap option. */ | |
690 | ||
691 | void | |
1579bae1 | 692 | add_wrap (const char *name) |
252b5132 RH |
693 | { |
694 | if (link_info.wrap_hash == NULL) | |
695 | { | |
1e9cc1c2 NC |
696 | link_info.wrap_hash = |
697 | (struct bfd_hash_table *) xmalloc (sizeof (struct bfd_hash_table)); | |
66eb6687 AM |
698 | if (!bfd_hash_table_init_n (link_info.wrap_hash, |
699 | bfd_hash_newfunc, | |
700 | sizeof (struct bfd_hash_entry), | |
701 | 61)) | |
252b5132 RH |
702 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); |
703 | } | |
0125cdf2 | 704 | |
b34976b6 | 705 | if (bfd_hash_lookup (link_info.wrap_hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
706 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); |
707 | } | |
708 | ||
709 | /* Handle the -retain-symbols-file option. */ | |
710 | ||
711 | void | |
1579bae1 | 712 | add_keepsyms_file (const char *filename) |
252b5132 RH |
713 | { |
714 | FILE *file; | |
715 | char *buf; | |
716 | size_t bufsize; | |
717 | int c; | |
718 | ||
719 | if (link_info.strip == strip_some) | |
720 | einfo (_("%X%P: error: duplicate retain-symbols-file\n")); | |
721 | ||
722 | file = fopen (filename, "r"); | |
1579bae1 | 723 | if (file == NULL) |
252b5132 RH |
724 | { |
725 | bfd_set_error (bfd_error_system_call); | |
726 | einfo ("%X%P: %s: %E\n", filename); | |
727 | return; | |
728 | } | |
729 | ||
1e9cc1c2 NC |
730 | link_info.keep_hash = (struct bfd_hash_table *) |
731 | xmalloc (sizeof (struct bfd_hash_table)); | |
66eb6687 AM |
732 | if (!bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc, |
733 | sizeof (struct bfd_hash_entry))) | |
252b5132 RH |
734 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); |
735 | ||
736 | bufsize = 100; | |
1e9cc1c2 | 737 | buf = (char *) xmalloc (bufsize); |
252b5132 RH |
738 | |
739 | c = getc (file); | |
740 | while (c != EOF) | |
741 | { | |
3882b010 | 742 | while (ISSPACE (c)) |
252b5132 RH |
743 | c = getc (file); |
744 | ||
745 | if (c != EOF) | |
746 | { | |
747 | size_t len = 0; | |
748 | ||
3882b010 | 749 | while (! ISSPACE (c) && c != EOF) |
252b5132 RH |
750 | { |
751 | buf[len] = c; | |
752 | ++len; | |
753 | if (len >= bufsize) | |
754 | { | |
755 | bufsize *= 2; | |
1e9cc1c2 | 756 | buf = (char *) xrealloc (buf, bufsize); |
252b5132 RH |
757 | } |
758 | c = getc (file); | |
759 | } | |
760 | ||
761 | buf[len] = '\0'; | |
762 | ||
1579bae1 | 763 | if (bfd_hash_lookup (link_info.keep_hash, buf, TRUE, TRUE) == NULL) |
252b5132 RH |
764 | einfo (_("%P%F: bfd_hash_lookup for insertion failed: %E\n")); |
765 | } | |
766 | } | |
767 | ||
768 | if (link_info.strip != strip_none) | |
769 | einfo (_("%P: `-retain-symbols-file' overrides `-s' and `-S'\n")); | |
770 | ||
5ed6aba4 | 771 | free (buf); |
252b5132 RH |
772 | link_info.strip = strip_some; |
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 AM |
782 | bfd *abfd, |
783 | const char *name) | |
252b5132 RH |
784 | { |
785 | lang_input_statement_type *input; | |
786 | ||
1e9cc1c2 NC |
787 | input = (lang_input_statement_type *) |
788 | xcalloc (1, sizeof (lang_input_statement_type)); | |
252b5132 RH |
789 | input->filename = abfd->filename; |
790 | input->local_sym_name = abfd->filename; | |
791 | input->the_bfd = abfd; | |
252b5132 RH |
792 | |
793 | ldlang_add_file (input); | |
794 | ||
1579bae1 | 795 | if (config.map_file != NULL) |
252b5132 | 796 | { |
b34976b6 | 797 | static bfd_boolean header_printed; |
252b5132 RH |
798 | struct bfd_link_hash_entry *h; |
799 | bfd *from; | |
800 | int len; | |
801 | ||
e1fffbe6 | 802 | h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); |
252b5132 RH |
803 | |
804 | if (h == NULL) | |
805 | from = NULL; | |
806 | else | |
807 | { | |
808 | switch (h->type) | |
809 | { | |
810 | default: | |
811 | from = NULL; | |
812 | break; | |
813 | ||
814 | case bfd_link_hash_defined: | |
815 | case bfd_link_hash_defweak: | |
816 | from = h->u.def.section->owner; | |
817 | break; | |
818 | ||
819 | case bfd_link_hash_undefined: | |
820 | case bfd_link_hash_undefweak: | |
821 | from = h->u.undef.abfd; | |
822 | break; | |
823 | ||
824 | case bfd_link_hash_common: | |
825 | from = h->u.c.p->section->owner; | |
826 | break; | |
827 | } | |
828 | } | |
829 | ||
830 | if (! header_printed) | |
831 | { | |
832 | char buf[100]; | |
833 | ||
e3c8793a | 834 | sprintf (buf, _("Archive member included because of file (symbol)\n\n")); |
252b5132 | 835 | minfo ("%s", buf); |
b34976b6 | 836 | header_printed = TRUE; |
252b5132 RH |
837 | } |
838 | ||
839 | if (bfd_my_archive (abfd) == NULL) | |
840 | { | |
841 | minfo ("%s", bfd_get_filename (abfd)); | |
842 | len = strlen (bfd_get_filename (abfd)); | |
843 | } | |
844 | else | |
845 | { | |
846 | minfo ("%s(%s)", bfd_get_filename (bfd_my_archive (abfd)), | |
847 | bfd_get_filename (abfd)); | |
848 | len = (strlen (bfd_get_filename (bfd_my_archive (abfd))) | |
849 | + strlen (bfd_get_filename (abfd)) | |
850 | + 2); | |
851 | } | |
852 | ||
853 | if (len >= 29) | |
854 | { | |
855 | print_nl (); | |
856 | len = 0; | |
857 | } | |
858 | while (len < 30) | |
859 | { | |
860 | print_space (); | |
861 | ++len; | |
862 | } | |
863 | ||
864 | if (from != NULL) | |
865 | minfo ("%B ", from); | |
866 | if (h != NULL) | |
867 | minfo ("(%T)\n", h->root.string); | |
868 | else | |
869 | minfo ("(%s)\n", name); | |
870 | } | |
871 | ||
872 | if (trace_files || trace_file_tries) | |
873 | info_msg ("%I\n", input); | |
874 | ||
b34976b6 | 875 | return TRUE; |
252b5132 RH |
876 | } |
877 | ||
878 | /* This is called when BFD has discovered a symbol which is defined | |
879 | multiple times. */ | |
880 | ||
b34976b6 | 881 | static bfd_boolean |
1579bae1 AM |
882 | multiple_definition (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
883 | const char *name, | |
884 | bfd *obfd, | |
885 | asection *osec, | |
886 | bfd_vma oval, | |
887 | bfd *nbfd, | |
888 | asection *nsec, | |
889 | bfd_vma nval) | |
252b5132 RH |
890 | { |
891 | /* If either section has the output_section field set to | |
892 | bfd_abs_section_ptr, it means that the section is being | |
893 | discarded, and this is not really a multiple definition at all. | |
894 | FIXME: It would be cleaner to somehow ignore symbols defined in | |
895 | sections which are being discarded. */ | |
896 | if ((osec->output_section != NULL | |
897 | && ! bfd_is_abs_section (osec) | |
898 | && bfd_is_abs_section (osec->output_section)) | |
899 | || (nsec->output_section != NULL | |
900 | && ! bfd_is_abs_section (nsec) | |
901 | && bfd_is_abs_section (nsec->output_section))) | |
b34976b6 | 902 | return TRUE; |
252b5132 RH |
903 | |
904 | einfo (_("%X%C: multiple definition of `%T'\n"), | |
905 | nbfd, nsec, nval, name); | |
1579bae1 | 906 | if (obfd != NULL) |
252b5132 | 907 | einfo (_("%D: first defined here\n"), obfd, osec, oval); |
9b14b192 NC |
908 | |
909 | if (command_line.relax) | |
910 | { | |
911 | einfo (_("%P: Disabling relaxation: it will not work with multiple definitions\n")); | |
912 | command_line.relax = 0; | |
913 | } | |
6d5e62f8 | 914 | |
b34976b6 | 915 | return TRUE; |
252b5132 RH |
916 | } |
917 | ||
918 | /* This is called when there is a definition of a common symbol, or | |
919 | when a common symbol is found for a symbol that is already defined, | |
920 | or when two common symbols are found. We only do something if | |
921 | -warn-common was used. */ | |
922 | ||
b34976b6 | 923 | static bfd_boolean |
1579bae1 AM |
924 | multiple_common (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
925 | const char *name, | |
926 | bfd *obfd, | |
927 | enum bfd_link_hash_type otype, | |
928 | bfd_vma osize, | |
929 | bfd *nbfd, | |
930 | enum bfd_link_hash_type ntype, | |
931 | bfd_vma nsize) | |
252b5132 RH |
932 | { |
933 | if (! config.warn_common) | |
b34976b6 | 934 | return TRUE; |
252b5132 RH |
935 | |
936 | if (ntype == bfd_link_hash_defined | |
937 | || ntype == bfd_link_hash_defweak | |
938 | || ntype == bfd_link_hash_indirect) | |
939 | { | |
940 | ASSERT (otype == bfd_link_hash_common); | |
941 | einfo (_("%B: warning: definition of `%T' overriding common\n"), | |
942 | nbfd, name); | |
943 | if (obfd != NULL) | |
944 | einfo (_("%B: warning: common is here\n"), obfd); | |
945 | } | |
946 | else if (otype == bfd_link_hash_defined | |
947 | || otype == bfd_link_hash_defweak | |
948 | || otype == bfd_link_hash_indirect) | |
949 | { | |
950 | ASSERT (ntype == bfd_link_hash_common); | |
951 | einfo (_("%B: warning: common of `%T' overridden by definition\n"), | |
952 | nbfd, name); | |
953 | if (obfd != NULL) | |
954 | einfo (_("%B: warning: defined here\n"), obfd); | |
955 | } | |
956 | else | |
957 | { | |
958 | ASSERT (otype == bfd_link_hash_common && ntype == bfd_link_hash_common); | |
959 | if (osize > nsize) | |
960 | { | |
961 | einfo (_("%B: warning: common of `%T' overridden by larger common\n"), | |
962 | nbfd, name); | |
963 | if (obfd != NULL) | |
964 | einfo (_("%B: warning: larger common is here\n"), obfd); | |
965 | } | |
966 | else if (nsize > osize) | |
967 | { | |
968 | einfo (_("%B: warning: common of `%T' overriding smaller common\n"), | |
969 | nbfd, name); | |
970 | if (obfd != NULL) | |
971 | einfo (_("%B: warning: smaller common is here\n"), obfd); | |
972 | } | |
973 | else | |
974 | { | |
975 | einfo (_("%B: warning: multiple common of `%T'\n"), nbfd, name); | |
976 | if (obfd != NULL) | |
977 | einfo (_("%B: warning: previous common is here\n"), obfd); | |
978 | } | |
979 | } | |
980 | ||
b34976b6 | 981 | return TRUE; |
252b5132 RH |
982 | } |
983 | ||
984 | /* This is called when BFD has discovered a set element. H is the | |
985 | entry in the linker hash table for the set. SECTION and VALUE | |
986 | represent a value which should be added to the set. */ | |
987 | ||
b34976b6 | 988 | static bfd_boolean |
1579bae1 AM |
989 | add_to_set (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
990 | struct bfd_link_hash_entry *h, | |
991 | bfd_reloc_code_real_type reloc, | |
992 | bfd *abfd, | |
993 | asection *section, | |
994 | bfd_vma value) | |
252b5132 RH |
995 | { |
996 | if (config.warn_constructors) | |
997 | einfo (_("%P: warning: global constructor %s used\n"), | |
998 | h->root.string); | |
999 | ||
1000 | if (! config.build_constructors) | |
b34976b6 | 1001 | return TRUE; |
252b5132 | 1002 | |
1579bae1 | 1003 | ldctor_add_set_entry (h, reloc, NULL, section, value); |
252b5132 RH |
1004 | |
1005 | if (h->type == bfd_link_hash_new) | |
1006 | { | |
1007 | h->type = bfd_link_hash_undefined; | |
1008 | h->u.undef.abfd = abfd; | |
1009 | /* We don't call bfd_link_add_undef to add this to the list of | |
1010 | undefined symbols because we are going to define it | |
1011 | ourselves. */ | |
1012 | } | |
1013 | ||
b34976b6 | 1014 | return TRUE; |
252b5132 RH |
1015 | } |
1016 | ||
1017 | /* This is called when BFD has discovered a constructor. This is only | |
1018 | called for some object file formats--those which do not handle | |
1019 | constructors in some more clever fashion. This is similar to | |
1020 | adding an element to a set, but less general. */ | |
1021 | ||
b34976b6 | 1022 | static bfd_boolean |
1579bae1 AM |
1023 | constructor_callback (struct bfd_link_info *info, |
1024 | bfd_boolean constructor, | |
1025 | const char *name, | |
1026 | bfd *abfd, | |
1027 | asection *section, | |
1028 | bfd_vma value) | |
252b5132 RH |
1029 | { |
1030 | char *s; | |
1031 | struct bfd_link_hash_entry *h; | |
1032 | char set_name[1 + sizeof "__CTOR_LIST__"]; | |
1033 | ||
1034 | if (config.warn_constructors) | |
1035 | einfo (_("%P: warning: global constructor %s used\n"), name); | |
1036 | ||
1037 | if (! config.build_constructors) | |
b34976b6 | 1038 | return TRUE; |
252b5132 RH |
1039 | |
1040 | /* Ensure that BFD_RELOC_CTOR exists now, so that we can give a | |
1041 | useful error message. */ | |
f13a99db | 1042 | if (bfd_reloc_type_lookup (link_info.output_bfd, BFD_RELOC_CTOR) == NULL |
e1fffbe6 | 1043 | && (info->relocatable |
252b5132 RH |
1044 | || bfd_reloc_type_lookup (abfd, BFD_RELOC_CTOR) == NULL)) |
1045 | einfo (_("%P%F: BFD backend error: BFD_RELOC_CTOR unsupported\n")); | |
1046 | ||
1047 | s = set_name; | |
1048 | if (bfd_get_symbol_leading_char (abfd) != '\0') | |
1049 | *s++ = bfd_get_symbol_leading_char (abfd); | |
1050 | if (constructor) | |
1051 | strcpy (s, "__CTOR_LIST__"); | |
1052 | else | |
1053 | strcpy (s, "__DTOR_LIST__"); | |
1054 | ||
b34976b6 | 1055 | h = bfd_link_hash_lookup (info->hash, set_name, TRUE, TRUE, TRUE); |
252b5132 RH |
1056 | if (h == (struct bfd_link_hash_entry *) NULL) |
1057 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); | |
1058 | if (h->type == bfd_link_hash_new) | |
1059 | { | |
1060 | h->type = bfd_link_hash_undefined; | |
1061 | h->u.undef.abfd = abfd; | |
1062 | /* We don't call bfd_link_add_undef to add this to the list of | |
1063 | undefined symbols because we are going to define it | |
1064 | ourselves. */ | |
1065 | } | |
1066 | ||
1067 | ldctor_add_set_entry (h, BFD_RELOC_CTOR, name, section, value); | |
b34976b6 | 1068 | return TRUE; |
252b5132 RH |
1069 | } |
1070 | ||
1071 | /* A structure used by warning_callback to pass information through | |
1072 | bfd_map_over_sections. */ | |
1073 | ||
0125cdf2 NC |
1074 | struct warning_callback_info |
1075 | { | |
b34976b6 | 1076 | bfd_boolean found; |
252b5132 RH |
1077 | const char *warning; |
1078 | const char *symbol; | |
1079 | asymbol **asymbols; | |
1080 | }; | |
1081 | ||
1082 | /* This is called when there is a reference to a warning symbol. */ | |
1083 | ||
b34976b6 | 1084 | static bfd_boolean |
1579bae1 AM |
1085 | warning_callback (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1086 | const char *warning, | |
1087 | const char *symbol, | |
1088 | bfd *abfd, | |
1089 | asection *section, | |
1090 | bfd_vma address) | |
252b5132 RH |
1091 | { |
1092 | /* This is a hack to support warn_multiple_gp. FIXME: This should | |
1093 | have a cleaner interface, but what? */ | |
1094 | if (! config.warn_multiple_gp | |
1095 | && strcmp (warning, "using multiple gp values") == 0) | |
b34976b6 | 1096 | return TRUE; |
252b5132 RH |
1097 | |
1098 | if (section != NULL) | |
300475fe | 1099 | einfo ("%C: %s%s\n", abfd, section, address, _("warning: "), warning); |
252b5132 | 1100 | else if (abfd == NULL) |
300475fe | 1101 | einfo ("%P: %s%s\n", _("warning: "), warning); |
252b5132 | 1102 | else if (symbol == NULL) |
300475fe | 1103 | einfo ("%B: %s%s\n", abfd, _("warning: "), warning); |
252b5132 RH |
1104 | else |
1105 | { | |
252b5132 RH |
1106 | struct warning_callback_info info; |
1107 | ||
1108 | /* Look through the relocs to see if we can find a plausible | |
1109 | address. */ | |
5c1d2f5f AM |
1110 | |
1111 | if (!bfd_generic_link_read_symbols (abfd)) | |
1112 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
252b5132 | 1113 | |
b34976b6 | 1114 | info.found = FALSE; |
252b5132 RH |
1115 | info.warning = warning; |
1116 | info.symbol = symbol; | |
5c1d2f5f | 1117 | info.asymbols = bfd_get_outsymbols (abfd); |
1579bae1 | 1118 | bfd_map_over_sections (abfd, warning_find_reloc, &info); |
252b5132 RH |
1119 | |
1120 | if (! info.found) | |
300475fe | 1121 | einfo ("%B: %s%s\n", abfd, _("warning: "), warning); |
252b5132 RH |
1122 | } |
1123 | ||
b34976b6 | 1124 | return TRUE; |
252b5132 RH |
1125 | } |
1126 | ||
1127 | /* This is called by warning_callback for each section. It checks the | |
1128 | relocs of the section to see if it can find a reference to the | |
1129 | symbol which triggered the warning. If it can, it uses the reloc | |
1130 | to give an error message with a file and line number. */ | |
1131 | ||
1132 | static void | |
1579bae1 | 1133 | warning_find_reloc (bfd *abfd, asection *sec, void *iarg) |
252b5132 | 1134 | { |
1e9cc1c2 | 1135 | struct warning_callback_info *info = (struct warning_callback_info *) iarg; |
252b5132 RH |
1136 | long relsize; |
1137 | arelent **relpp; | |
1138 | long relcount; | |
1139 | arelent **p, **pend; | |
1140 | ||
1141 | if (info->found) | |
1142 | return; | |
1143 | ||
1144 | relsize = bfd_get_reloc_upper_bound (abfd, sec); | |
1145 | if (relsize < 0) | |
1146 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1147 | if (relsize == 0) | |
1148 | return; | |
1149 | ||
1e9cc1c2 | 1150 | relpp = (arelent **) xmalloc (relsize); |
252b5132 RH |
1151 | relcount = bfd_canonicalize_reloc (abfd, sec, relpp, info->asymbols); |
1152 | if (relcount < 0) | |
1153 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1154 | ||
1155 | p = relpp; | |
1156 | pend = p + relcount; | |
1157 | for (; p < pend && *p != NULL; p++) | |
1158 | { | |
1159 | arelent *q = *p; | |
1160 | ||
1161 | if (q->sym_ptr_ptr != NULL | |
1162 | && *q->sym_ptr_ptr != NULL | |
1163 | && strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), info->symbol) == 0) | |
1164 | { | |
1165 | /* We found a reloc for the symbol we are looking for. */ | |
300475fe HPN |
1166 | einfo ("%C: %s%s\n", abfd, sec, q->address, _("warning: "), |
1167 | info->warning); | |
b34976b6 | 1168 | info->found = TRUE; |
252b5132 RH |
1169 | break; |
1170 | } | |
1171 | } | |
1172 | ||
1173 | free (relpp); | |
1174 | } | |
1175 | ||
1176 | /* This is called when an undefined symbol is found. */ | |
1177 | ||
b34976b6 | 1178 | static bfd_boolean |
1579bae1 AM |
1179 | undefined_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1180 | const char *name, | |
1181 | bfd *abfd, | |
1182 | asection *section, | |
1183 | bfd_vma address, | |
0b28295d | 1184 | bfd_boolean error) |
252b5132 RH |
1185 | { |
1186 | static char *error_name; | |
1187 | static unsigned int error_count; | |
1188 | ||
1189 | #define MAX_ERRORS_IN_A_ROW 5 | |
1190 | ||
1191 | if (config.warn_once) | |
1192 | { | |
1193 | static struct bfd_hash_table *hash; | |
1194 | ||
1195 | /* Only warn once about a particular undefined symbol. */ | |
252b5132 RH |
1196 | if (hash == NULL) |
1197 | { | |
1e9cc1c2 NC |
1198 | hash = (struct bfd_hash_table *) |
1199 | xmalloc (sizeof (struct bfd_hash_table)); | |
66eb6687 AM |
1200 | if (!bfd_hash_table_init (hash, bfd_hash_newfunc, |
1201 | sizeof (struct bfd_hash_entry))) | |
252b5132 RH |
1202 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); |
1203 | } | |
1204 | ||
b34976b6 AM |
1205 | if (bfd_hash_lookup (hash, name, FALSE, FALSE) != NULL) |
1206 | return TRUE; | |
252b5132 | 1207 | |
b34976b6 | 1208 | if (bfd_hash_lookup (hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
1209 | einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); |
1210 | } | |
1211 | ||
1212 | /* We never print more than a reasonable number of errors in a row | |
1213 | for a single symbol. */ | |
1579bae1 | 1214 | if (error_name != NULL |
252b5132 RH |
1215 | && strcmp (name, error_name) == 0) |
1216 | ++error_count; | |
1217 | else | |
1218 | { | |
1219 | error_count = 0; | |
1579bae1 | 1220 | if (error_name != NULL) |
252b5132 | 1221 | free (error_name); |
d1b2b2dc | 1222 | error_name = xstrdup (name); |
252b5132 RH |
1223 | } |
1224 | ||
1225 | if (section != NULL) | |
1226 | { | |
1227 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1228 | { |
0b28295d ILT |
1229 | if (error) |
1230 | einfo (_("%X%C: undefined reference to `%T'\n"), | |
1231 | abfd, section, address, name); | |
1232 | else | |
1233 | einfo (_("%C: warning: undefined reference to `%T'\n"), | |
1234 | abfd, section, address, name); | |
b6f29aaa | 1235 | } |
252b5132 | 1236 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1237 | { |
1238 | if (error) | |
1239 | einfo (_("%X%D: more undefined references to `%T' follow\n"), | |
1240 | abfd, section, address, name); | |
1241 | else | |
1242 | einfo (_("%D: warning: more undefined references to `%T' follow\n"), | |
1243 | abfd, section, address, name); | |
1244 | } | |
1245 | else if (error) | |
1246 | einfo ("%X"); | |
252b5132 RH |
1247 | } |
1248 | else | |
1249 | { | |
1250 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1251 | { |
0b28295d ILT |
1252 | if (error) |
1253 | einfo (_("%X%B: undefined reference to `%T'\n"), | |
1254 | abfd, name); | |
1255 | else | |
1256 | einfo (_("%B: warning: undefined reference to `%T'\n"), | |
1257 | abfd, name); | |
b6f29aaa | 1258 | } |
252b5132 | 1259 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1260 | { |
1261 | if (error) | |
1262 | einfo (_("%X%B: more undefined references to `%T' follow\n"), | |
1263 | abfd, name); | |
1264 | else | |
1265 | einfo (_("%B: warning: more undefined references to `%T' follow\n"), | |
1266 | abfd, name); | |
1267 | } | |
1268 | else if (error) | |
1269 | einfo ("%X"); | |
252b5132 RH |
1270 | } |
1271 | ||
b34976b6 | 1272 | return TRUE; |
252b5132 RH |
1273 | } |
1274 | ||
8aae64e6 AO |
1275 | /* Counter to limit the number of relocation overflow error messages |
1276 | to print. Errors are printed as it is decremented. When it's | |
1277 | called and the counter is zero, a final message is printed | |
1278 | indicating more relocations were omitted. When it gets to -1, no | |
1279 | such errors are printed. If it's initially set to a value less | |
1280 | than -1, all such errors will be printed (--verbose does this). */ | |
1281 | ||
1282 | int overflow_cutoff_limit = 10; | |
1283 | ||
252b5132 RH |
1284 | /* This is called when a reloc overflows. */ |
1285 | ||
b34976b6 | 1286 | static bfd_boolean |
1579bae1 | 1287 | reloc_overflow (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
dfeffb9f | 1288 | struct bfd_link_hash_entry *entry, |
1579bae1 AM |
1289 | const char *name, |
1290 | const char *reloc_name, | |
1291 | bfd_vma addend, | |
1292 | bfd *abfd, | |
1293 | asection *section, | |
1294 | bfd_vma address) | |
252b5132 | 1295 | { |
8aae64e6 AO |
1296 | if (overflow_cutoff_limit == -1) |
1297 | return TRUE; | |
1298 | ||
e1fffbe6 | 1299 | einfo ("%X%C:", abfd, section, address); |
8aae64e6 AO |
1300 | |
1301 | if (overflow_cutoff_limit >= 0 | |
1302 | && overflow_cutoff_limit-- == 0) | |
1303 | { | |
1304 | einfo (_(" additional relocation overflows omitted from the output\n")); | |
1305 | return TRUE; | |
1306 | } | |
1307 | ||
dfeffb9f L |
1308 | if (entry) |
1309 | { | |
1310 | while (entry->type == bfd_link_hash_indirect | |
1311 | || entry->type == bfd_link_hash_warning) | |
1312 | entry = entry->u.i.link; | |
1313 | switch (entry->type) | |
1314 | { | |
1315 | case bfd_link_hash_undefined: | |
1316 | case bfd_link_hash_undefweak: | |
1317 | einfo (_(" relocation truncated to fit: %s against undefined symbol `%T'"), | |
1318 | reloc_name, entry->root.string); | |
1319 | break; | |
1320 | case bfd_link_hash_defined: | |
1321 | case bfd_link_hash_defweak: | |
1322 | einfo (_(" relocation truncated to fit: %s against symbol `%T' defined in %A section in %B"), | |
1323 | reloc_name, entry->root.string, | |
a6e1b90f L |
1324 | entry->u.def.section, |
1325 | entry->u.def.section == bfd_abs_section_ptr | |
f13a99db | 1326 | ? link_info.output_bfd : entry->u.def.section->owner); |
dfeffb9f L |
1327 | break; |
1328 | default: | |
1329 | abort (); | |
1330 | break; | |
1331 | } | |
1332 | } | |
1333 | else | |
1334 | einfo (_(" relocation truncated to fit: %s against `%T'"), | |
1335 | reloc_name, name); | |
252b5132 RH |
1336 | if (addend != 0) |
1337 | einfo ("+%v", addend); | |
1338 | einfo ("\n"); | |
b34976b6 | 1339 | return TRUE; |
252b5132 RH |
1340 | } |
1341 | ||
1342 | /* This is called when a dangerous relocation is made. */ | |
1343 | ||
b34976b6 | 1344 | static bfd_boolean |
1579bae1 AM |
1345 | reloc_dangerous (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1346 | const char *message, | |
1347 | bfd *abfd, | |
1348 | asection *section, | |
1349 | bfd_vma address) | |
252b5132 | 1350 | { |
e1fffbe6 AM |
1351 | einfo (_("%X%C: dangerous relocation: %s\n"), |
1352 | abfd, section, address, message); | |
b34976b6 | 1353 | return TRUE; |
252b5132 RH |
1354 | } |
1355 | ||
1356 | /* This is called when a reloc is being generated attached to a symbol | |
1357 | that is not being output. */ | |
1358 | ||
b34976b6 | 1359 | static bfd_boolean |
1579bae1 AM |
1360 | unattached_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1361 | const char *name, | |
1362 | bfd *abfd, | |
1363 | asection *section, | |
1364 | bfd_vma address) | |
252b5132 | 1365 | { |
e1fffbe6 AM |
1366 | einfo (_("%X%C: reloc refers to symbol `%T' which is not being output\n"), |
1367 | abfd, section, address, name); | |
b34976b6 | 1368 | return TRUE; |
252b5132 RH |
1369 | } |
1370 | ||
1371 | /* This is called if link_info.notice_all is set, or when a symbol in | |
1372 | link_info.notice_hash is found. Symbols are put in notice_hash | |
1373 | using the -y option. */ | |
1374 | ||
b34976b6 | 1375 | static bfd_boolean |
1579bae1 AM |
1376 | notice (struct bfd_link_info *info, |
1377 | const char *name, | |
1378 | bfd *abfd, | |
1379 | asection *section, | |
1380 | bfd_vma value) | |
252b5132 | 1381 | { |
5061a885 AM |
1382 | if (name == NULL) |
1383 | { | |
1384 | if (command_line.cref || nocrossref_list != NULL) | |
1e9cc1c2 | 1385 | return handle_asneeded_cref (abfd, (enum notice_asneeded_action) value); |
5061a885 AM |
1386 | return TRUE; |
1387 | } | |
1388 | ||
252b5132 RH |
1389 | if (! info->notice_all |
1390 | || (info->notice_hash != NULL | |
b34976b6 | 1391 | && bfd_hash_lookup (info->notice_hash, name, FALSE, FALSE) != NULL)) |
252b5132 RH |
1392 | { |
1393 | if (bfd_is_und_section (section)) | |
1394 | einfo ("%B: reference to %s\n", abfd, name); | |
1395 | else | |
1396 | einfo ("%B: definition of %s\n", abfd, name); | |
1397 | } | |
1398 | ||
1399 | if (command_line.cref || nocrossref_list != NULL) | |
1400 | add_cref (name, abfd, section, value); | |
1401 | ||
b34976b6 | 1402 | return TRUE; |
252b5132 | 1403 | } |