Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Main program of GNU linker. |
4e5bae56 | 2 | Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
f13a99db | 3 | 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
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 | |
4a43e768 AM |
96 | /* Nonzero means create DT_NEEDED entries only if a dynamic library |
97 | actually satisfies some reference in a regular object. */ | |
98 | bfd_boolean as_needed; | |
99 | ||
e56f61be L |
100 | /* Nonzero means never create DT_NEEDED entries for dynamic libraries |
101 | in DT_NEEDED tags. */ | |
102 | bfd_boolean add_needed = TRUE; | |
103 | ||
b34976b6 AM |
104 | /* TRUE if we should demangle symbol names. */ |
105 | bfd_boolean demangling; | |
252b5132 RH |
106 | |
107 | args_type command_line; | |
108 | ||
109 | ld_config_type config; | |
110 | ||
bcaa7b3e L |
111 | sort_type sort_section; |
112 | ||
e2243057 RS |
113 | static const char *get_sysroot |
114 | (int, char **); | |
0125cdf2 | 115 | static char *get_emulation |
1579bae1 | 116 | (int, char **); |
0125cdf2 | 117 | static void set_scripts_dir |
1579bae1 | 118 | (void); |
0125cdf2 | 119 | static bfd_boolean add_archive_element |
1579bae1 | 120 | (struct bfd_link_info *, bfd *, const char *); |
0125cdf2 | 121 | static bfd_boolean multiple_definition |
1579bae1 AM |
122 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma, |
123 | bfd *, asection *, bfd_vma); | |
0125cdf2 | 124 | static bfd_boolean multiple_common |
1579bae1 AM |
125 | (struct bfd_link_info *, const char *, bfd *, enum bfd_link_hash_type, |
126 | bfd_vma, bfd *, enum bfd_link_hash_type, bfd_vma); | |
0125cdf2 | 127 | static bfd_boolean add_to_set |
1579bae1 AM |
128 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
129 | bfd_reloc_code_real_type, bfd *, asection *, bfd_vma); | |
0125cdf2 | 130 | static bfd_boolean constructor_callback |
1579bae1 AM |
131 | (struct bfd_link_info *, bfd_boolean, const char *, bfd *, |
132 | asection *, bfd_vma); | |
0125cdf2 | 133 | static bfd_boolean warning_callback |
1579bae1 AM |
134 | (struct bfd_link_info *, const char *, const char *, bfd *, |
135 | asection *, bfd_vma); | |
0125cdf2 | 136 | static void warning_find_reloc |
1579bae1 | 137 | (bfd *, asection *, void *); |
0125cdf2 | 138 | static bfd_boolean undefined_symbol |
1579bae1 AM |
139 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma, |
140 | bfd_boolean); | |
0125cdf2 | 141 | static bfd_boolean reloc_overflow |
dfeffb9f L |
142 | (struct bfd_link_info *, struct bfd_link_hash_entry *, const char *, |
143 | const char *, bfd_vma, bfd *, asection *, bfd_vma); | |
0125cdf2 | 144 | static bfd_boolean reloc_dangerous |
1579bae1 | 145 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
0125cdf2 | 146 | static bfd_boolean unattached_reloc |
1579bae1 | 147 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
0125cdf2 | 148 | static bfd_boolean notice |
1579bae1 | 149 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
0125cdf2 NC |
150 | |
151 | static struct bfd_link_callbacks link_callbacks = | |
152 | { | |
252b5132 RH |
153 | add_archive_element, |
154 | multiple_definition, | |
155 | multiple_common, | |
156 | add_to_set, | |
157 | constructor_callback, | |
158 | warning_callback, | |
159 | undefined_symbol, | |
160 | reloc_overflow, | |
161 | reloc_dangerous, | |
162 | unattached_reloc, | |
e1fffbe6 | 163 | notice, |
2889e75b | 164 | einfo, |
49fa1e15 AM |
165 | info_msg, |
166 | minfo, | |
2889e75b | 167 | ldlang_override_segment_assignment |
252b5132 RH |
168 | }; |
169 | ||
170 | struct bfd_link_info link_info; | |
171 | \f | |
172 | static void | |
1579bae1 | 173 | remove_output (void) |
252b5132 | 174 | { |
6d5e62f8 | 175 | if (output_filename) |
252b5132 | 176 | { |
f13a99db AM |
177 | if (link_info.output_bfd) |
178 | bfd_cache_close (link_info.output_bfd); | |
252b5132 | 179 | if (delete_output_file_on_failure) |
bb14f524 | 180 | unlink_if_ordinary (output_filename); |
252b5132 RH |
181 | } |
182 | } | |
183 | ||
184 | int | |
1579bae1 | 185 | main (int argc, char **argv) |
252b5132 RH |
186 | { |
187 | char *emulation; | |
188 | long start_time = get_run_time (); | |
189 | ||
190 | #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) | |
191 | setlocale (LC_MESSAGES, ""); | |
3882b010 L |
192 | #endif |
193 | #if defined (HAVE_SETLOCALE) | |
194 | setlocale (LC_CTYPE, ""); | |
252b5132 RH |
195 | #endif |
196 | bindtextdomain (PACKAGE, LOCALEDIR); | |
197 | textdomain (PACKAGE); | |
198 | ||
199 | program_name = argv[0]; | |
200 | xmalloc_set_program_name (program_name); | |
201 | ||
202 | START_PROGRESS (program_name, 0); | |
203 | ||
869b9d07 MM |
204 | expandargv (&argc, &argv); |
205 | ||
252b5132 RH |
206 | bfd_init (); |
207 | ||
208 | bfd_set_error_program_name (program_name); | |
209 | ||
210 | xatexit (remove_output); | |
211 | ||
e2243057 RS |
212 | /* Set up the sysroot directory. */ |
213 | ld_sysroot = get_sysroot (argc, argv); | |
214 | if (*ld_sysroot) | |
9c8ebd6a | 215 | { |
e2243057 | 216 | if (*TARGET_SYSTEM_ROOT == 0) |
9c8ebd6a | 217 | { |
70487fb2 | 218 | einfo ("%P%F: this linker was not configured to use sysroots\n"); |
e2243057 | 219 | ld_sysroot = ""; |
0125cdf2 | 220 | } |
e2243057 RS |
221 | else |
222 | ld_canon_sysroot = lrealpath (ld_sysroot); | |
0125cdf2 | 223 | } |
3fe38064 NC |
224 | if (ld_canon_sysroot) |
225 | ld_canon_sysroot_len = strlen (ld_canon_sysroot); | |
226 | else | |
227 | ld_canon_sysroot_len = -1; | |
228 | ||
252b5132 RH |
229 | /* Set the default BFD target based on the configured target. Doing |
230 | this permits the linker to be configured for a particular target, | |
231 | and linked against a shared BFD library which was configured for | |
232 | a different target. The macro TARGET is defined by Makefile. */ | |
233 | if (! bfd_set_default_target (TARGET)) | |
234 | { | |
235 | einfo (_("%X%P: can't set BFD default target to `%s': %E\n"), TARGET); | |
236 | xexit (1); | |
237 | } | |
238 | ||
b47c4208 AM |
239 | #if YYDEBUG |
240 | { | |
241 | extern int yydebug; | |
242 | yydebug = 1; | |
243 | } | |
244 | #endif | |
245 | ||
b34976b6 | 246 | config.build_constructors = TRUE; |
c76308d2 | 247 | config.rpath_separator = ':'; |
a854a4a7 AM |
248 | config.split_by_reloc = (unsigned) -1; |
249 | config.split_by_file = (bfd_size_type) -1; | |
3b95049e AM |
250 | config.make_executable = TRUE; |
251 | config.magic_demand_paged = TRUE; | |
252 | config.text_read_only = TRUE; | |
253 | ||
b34976b6 | 254 | command_line.warn_mismatch = TRUE; |
fe7929ce | 255 | command_line.warn_search_mismatch = TRUE; |
b34976b6 | 256 | command_line.check_section_addresses = TRUE; |
bcaa7b3e | 257 | |
252b5132 RH |
258 | /* We initialize DEMANGLING based on the environment variable |
259 | COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the | |
260 | output of the linker, unless COLLECT_NO_DEMANGLE is set in the | |
261 | environment. Acting the same way here lets us provide the same | |
262 | interface by default. */ | |
263 | demangling = getenv ("COLLECT_NO_DEMANGLE") == NULL; | |
264 | ||
b34976b6 | 265 | link_info.allow_undefined_version = TRUE; |
b5067602 | 266 | link_info.keep_memory = TRUE; |
b5067602 | 267 | link_info.combreloc = TRUE; |
d5cd3933 | 268 | link_info.strip_discarded = TRUE; |
fdc90cb4 | 269 | link_info.emit_hash = TRUE; |
a9a4c53e AM |
270 | link_info.callbacks = &link_callbacks; |
271 | link_info.input_bfds_tail = &link_info.input_bfds; | |
3dbf70a2 MM |
272 | /* SVR4 linkers seem to set DT_INIT and DT_FINI based on magic _init |
273 | and _fini symbols. We are compatible. */ | |
274 | link_info.init_function = "_init"; | |
275 | link_info.fini_function = "_fini"; | |
a9a4c53e | 276 | link_info.relax_pass = 1; |
e0076ab3 | 277 | link_info.pei386_auto_import = -1; |
db6751f2 | 278 | link_info.spare_dynamic_tags = 5; |
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); |
252b5132 RH |
284 | lang_init (); |
285 | ldemul_before_parse (); | |
b34976b6 | 286 | lang_has_input_file = FALSE; |
252b5132 RH |
287 | parse_args (argc, argv); |
288 | ||
2d643429 NC |
289 | if (config.hash_table_size != 0) |
290 | bfd_hash_set_default_size (config.hash_table_size); | |
291 | ||
252b5132 RH |
292 | ldemul_set_symbols (); |
293 | ||
1049f94e | 294 | if (link_info.relocatable) |
252b5132 | 295 | { |
ac69cbc6 | 296 | if (command_line.relax) |
252b5132 RH |
297 | einfo (_("%P%F: --relax and -r may not be used together\n")); |
298 | if (link_info.shared) | |
299 | einfo (_("%P%F: -r and -shared may not be used together\n")); | |
300 | } | |
301 | ||
d8cf8b51 L |
302 | /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data, |
303 | --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and | |
304 | --dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are | |
305 | for shared libraries. -Bsymbolic overrides all others and vice | |
306 | versa. */ | |
307 | switch (command_line.symbolic) | |
308 | { | |
309 | case symbolic_unset: | |
310 | break; | |
311 | case symbolic: | |
312 | /* -Bsymbolic is for shared library only. */ | |
313 | if (link_info.shared) | |
314 | { | |
315 | link_info.symbolic = TRUE; | |
316 | /* Should we free the unused memory? */ | |
317 | link_info.dynamic_list = NULL; | |
318 | command_line.dynamic_list = dynamic_list_unset; | |
319 | } | |
320 | break; | |
321 | case symbolic_functions: | |
322 | /* -Bsymbolic-functions is for shared library only. */ | |
323 | if (link_info.shared) | |
324 | command_line.dynamic_list = dynamic_list_data; | |
325 | break; | |
326 | } | |
327 | ||
328 | switch (command_line.dynamic_list) | |
329 | { | |
330 | case dynamic_list_unset: | |
331 | break; | |
332 | case dynamic_list_data: | |
333 | link_info.dynamic_data = TRUE; | |
334 | case dynamic_list: | |
335 | link_info.dynamic = TRUE; | |
336 | break; | |
337 | } | |
338 | ||
7333607e JJ |
339 | if (! link_info.shared) |
340 | { | |
341 | if (command_line.filter_shlib) | |
e97cb84f | 342 | einfo (_("%P%F: -F may not be used without -shared\n")); |
7333607e | 343 | if (command_line.auxiliary_filters) |
e97cb84f | 344 | einfo (_("%P%F: -f may not be used without -shared\n")); |
7333607e JJ |
345 | } |
346 | ||
36af4a4e JJ |
347 | if (! link_info.shared || link_info.pie) |
348 | link_info.executable = TRUE; | |
349 | ||
252b5132 RH |
350 | /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I |
351 | don't see how else this can be handled, since in this case we | |
352 | must preserve all externally visible symbols. */ | |
1049f94e | 353 | if (link_info.relocatable && link_info.strip == strip_all) |
252b5132 RH |
354 | { |
355 | link_info.strip = strip_debugger; | |
f5fa8ca2 | 356 | if (link_info.discard == discard_sec_merge) |
252b5132 RH |
357 | link_info.discard = discard_all; |
358 | } | |
359 | ||
360 | /* This essentially adds another -L directory so this must be done after | |
361 | the -L's in argv have been processed. */ | |
362 | set_scripts_dir (); | |
363 | ||
14be8564 L |
364 | /* If we have not already opened and parsed a linker script, |
365 | try the default script from command line first. */ | |
366 | if (saved_script_handle == NULL | |
367 | && command_line.default_script != NULL) | |
368 | { | |
369 | ldfile_open_command_file (command_line.default_script); | |
370 | parser_input = input_script; | |
371 | yyparse (); | |
372 | } | |
373 | ||
b9a8de1e NC |
374 | /* If we have not already opened and parsed a linker script |
375 | read the emulation's appropriate default script. */ | |
b90e1c6f | 376 | if (saved_script_handle == NULL) |
252b5132 | 377 | { |
252b5132 | 378 | int isfile; |
b7a26f91 | 379 | char *s = ldemul_get_script (&isfile); |
252b5132 RH |
380 | |
381 | if (isfile) | |
382 | ldfile_open_command_file (s); | |
383 | else | |
b7a26f91 | 384 | { |
252b5132 RH |
385 | lex_string = s; |
386 | lex_redirect (s); | |
387 | } | |
388 | parser_input = input_script; | |
389 | yyparse (); | |
390 | lex_string = NULL; | |
391 | } | |
392 | ||
b9a8de1e NC |
393 | if (trace_file_tries) |
394 | { | |
9cb61eab AM |
395 | if (saved_script_handle) |
396 | info_msg (_("using external linker script:")); | |
397 | else | |
398 | info_msg (_("using internal linker script:")); | |
399 | info_msg ("\n==================================================\n"); | |
b9a8de1e NC |
400 | |
401 | if (saved_script_handle) | |
402 | { | |
74699268 | 403 | static const int ld_bufsz = 8193; |
b9a8de1e | 404 | size_t n; |
74699268 | 405 | char *buf = xmalloc (ld_bufsz); |
b9a8de1e NC |
406 | |
407 | rewind (saved_script_handle); | |
74699268 | 408 | while ((n = fread (buf, 1, ld_bufsz - 1, saved_script_handle)) > 0) |
b9a8de1e | 409 | { |
b7a26f91 | 410 | buf[n] = 0; |
b9a8de1e NC |
411 | info_msg (buf); |
412 | } | |
413 | rewind (saved_script_handle); | |
414 | free (buf); | |
415 | } | |
416 | else | |
417 | { | |
418 | int isfile; | |
419 | ||
b7a26f91 | 420 | info_msg (ldemul_get_script (&isfile)); |
b9a8de1e | 421 | } |
b7a26f91 | 422 | |
b9a8de1e NC |
423 | info_msg ("\n==================================================\n"); |
424 | } | |
425 | ||
252b5132 RH |
426 | lang_final (); |
427 | ||
b34976b6 | 428 | if (!lang_has_input_file) |
252b5132 RH |
429 | { |
430 | if (version_printed) | |
431 | xexit (0); | |
432 | einfo (_("%P%F: no input files\n")); | |
433 | } | |
434 | ||
435 | if (trace_files) | |
0125cdf2 | 436 | info_msg (_("%P: mode %s\n"), emulation); |
252b5132 RH |
437 | |
438 | ldemul_after_parse (); | |
439 | ||
252b5132 RH |
440 | if (config.map_filename) |
441 | { | |
442 | if (strcmp (config.map_filename, "-") == 0) | |
443 | { | |
444 | config.map_file = stdout; | |
445 | } | |
446 | else | |
447 | { | |
448 | config.map_file = fopen (config.map_filename, FOPEN_WT); | |
449 | if (config.map_file == (FILE *) NULL) | |
450 | { | |
451 | bfd_set_error (bfd_error_system_call); | |
452 | einfo (_("%P%F: cannot open map file %s: %E\n"), | |
453 | config.map_filename); | |
454 | } | |
455 | } | |
456 | } | |
457 | ||
252b5132 RH |
458 | lang_process (); |
459 | ||
460 | /* Print error messages for any missing symbols, for any warning | |
6d5e62f8 | 461 | symbols, and possibly multiple definitions. */ |
1049f94e | 462 | if (link_info.relocatable) |
f13a99db | 463 | link_info.output_bfd->flags &= ~EXEC_P; |
252b5132 | 464 | else |
f13a99db | 465 | link_info.output_bfd->flags |= EXEC_P; |
252b5132 RH |
466 | |
467 | ldwrite (); | |
468 | ||
469 | if (config.map_file != NULL) | |
470 | lang_map (); | |
471 | if (command_line.cref) | |
472 | output_cref (config.map_file != NULL ? config.map_file : stdout); | |
473 | if (nocrossref_list != NULL) | |
474 | check_nocrossrefs (); | |
475 | ||
750877ba L |
476 | lang_finish (); |
477 | ||
1049f94e | 478 | /* Even if we're producing relocatable output, some non-fatal errors should |
252b5132 | 479 | be reported in the exit status. (What non-fatal errors, if any, do we |
1049f94e | 480 | want to ignore for relocatable output?) */ |
b34976b6 | 481 | if (!config.make_executable && !force_make_executable) |
252b5132 | 482 | { |
b34976b6 | 483 | if (trace_files) |
0125cdf2 NC |
484 | einfo (_("%P: link errors found, deleting executable `%s'\n"), |
485 | output_filename); | |
252b5132 RH |
486 | |
487 | /* The file will be removed by remove_output. */ | |
252b5132 RH |
488 | xexit (1); |
489 | } | |
490 | else | |
491 | { | |
f13a99db AM |
492 | if (! bfd_close (link_info.output_bfd)) |
493 | einfo (_("%F%B: final close failed: %E\n"), link_info.output_bfd); | |
252b5132 RH |
494 | |
495 | /* If the --force-exe-suffix is enabled, and we're making an | |
6d5e62f8 KH |
496 | executable file and it doesn't end in .exe, copy it to one |
497 | which does. */ | |
1049f94e | 498 | if (! link_info.relocatable && command_line.force_exe_suffix) |
252b5132 RH |
499 | { |
500 | int len = strlen (output_filename); | |
0125cdf2 | 501 | |
6d5e62f8 | 502 | if (len < 4 |
252b5132 RH |
503 | || (strcasecmp (output_filename + len - 4, ".exe") != 0 |
504 | && strcasecmp (output_filename + len - 4, ".dll") != 0)) | |
505 | { | |
506 | FILE *src; | |
507 | FILE *dst; | |
508 | const int bsize = 4096; | |
509 | char *buf = xmalloc (bsize); | |
510 | int l; | |
511 | char *dst_name = xmalloc (len + 5); | |
0125cdf2 | 512 | |
252b5132 RH |
513 | strcpy (dst_name, output_filename); |
514 | strcat (dst_name, ".exe"); | |
515 | src = fopen (output_filename, FOPEN_RB); | |
516 | dst = fopen (dst_name, FOPEN_WB); | |
517 | ||
518 | if (!src) | |
1579bae1 AM |
519 | einfo (_("%X%P: unable to open for source of copy `%s'\n"), |
520 | output_filename); | |
252b5132 | 521 | if (!dst) |
1579bae1 AM |
522 | einfo (_("%X%P: unable to open for destination of copy `%s'\n"), |
523 | dst_name); | |
252b5132 RH |
524 | while ((l = fread (buf, 1, bsize, src)) > 0) |
525 | { | |
526 | int done = fwrite (buf, 1, l, dst); | |
0125cdf2 | 527 | |
252b5132 | 528 | if (done != l) |
0125cdf2 | 529 | einfo (_("%P: Error writing file `%s'\n"), dst_name); |
252b5132 | 530 | } |
0125cdf2 | 531 | |
252b5132 RH |
532 | fclose (src); |
533 | if (fclose (dst) == EOF) | |
0125cdf2 | 534 | einfo (_("%P: Error closing file `%s'\n"), dst_name); |
252b5132 RH |
535 | free (dst_name); |
536 | free (buf); | |
537 | } | |
538 | } | |
539 | } | |
540 | ||
541 | END_PROGRESS (program_name); | |
542 | ||
543 | if (config.stats) | |
544 | { | |
545 | #ifdef HAVE_SBRK | |
1579bae1 | 546 | char *lim = sbrk (0); |
252b5132 RH |
547 | #endif |
548 | long run_time = get_run_time () - start_time; | |
549 | ||
550 | fprintf (stderr, _("%s: total time in link: %ld.%06ld\n"), | |
551 | program_name, run_time / 1000000, run_time % 1000000); | |
552 | #ifdef HAVE_SBRK | |
553 | fprintf (stderr, _("%s: data size %ld\n"), program_name, | |
554 | (long) (lim - (char *) &environ)); | |
555 | #endif | |
556 | } | |
557 | ||
558 | /* Prevent remove_output from doing anything, after a successful link. */ | |
559 | output_filename = NULL; | |
560 | ||
561 | xexit (0); | |
562 | return 0; | |
563 | } | |
564 | ||
e2243057 RS |
565 | /* If the configured sysroot is relocatable, try relocating it based on |
566 | default prefix FROM. Return the relocated directory if it exists, | |
567 | otherwise return null. */ | |
568 | ||
569 | static char * | |
570 | get_relative_sysroot (const char *from ATTRIBUTE_UNUSED) | |
571 | { | |
572 | #ifdef TARGET_SYSTEM_ROOT_RELOCATABLE | |
573 | char *path; | |
574 | struct stat s; | |
575 | ||
576 | path = make_relative_prefix (program_name, from, TARGET_SYSTEM_ROOT); | |
577 | if (path) | |
578 | { | |
579 | if (stat (path, &s) == 0 && S_ISDIR (s.st_mode)) | |
580 | return path; | |
581 | free (path); | |
582 | } | |
583 | #endif | |
584 | return 0; | |
585 | } | |
586 | ||
587 | /* Return the sysroot directory. Return "" if no sysroot is being used. */ | |
588 | ||
589 | static const char * | |
590 | get_sysroot (int argc, char **argv) | |
591 | { | |
592 | int i; | |
593 | const char *path; | |
594 | ||
595 | for (i = 1; i < argc; i++) | |
0112cd26 | 596 | if (CONST_STRNEQ (argv[i], "--sysroot=")) |
e2243057 RS |
597 | return argv[i] + strlen ("--sysroot="); |
598 | ||
599 | path = get_relative_sysroot (BINDIR); | |
600 | if (path) | |
601 | return path; | |
602 | ||
603 | path = get_relative_sysroot (TOOLBINDIR); | |
604 | if (path) | |
605 | return path; | |
606 | ||
607 | return TARGET_SYSTEM_ROOT; | |
608 | } | |
609 | ||
252b5132 RH |
610 | /* We need to find any explicitly given emulation in order to initialize the |
611 | state that's needed by the lex&yacc argument parser (parse_args). */ | |
612 | ||
613 | static char * | |
1579bae1 | 614 | get_emulation (int argc, char **argv) |
252b5132 RH |
615 | { |
616 | char *emulation; | |
617 | int i; | |
618 | ||
619 | emulation = getenv (EMULATION_ENVIRON); | |
620 | if (emulation == NULL) | |
621 | emulation = DEFAULT_EMULATION; | |
622 | ||
623 | for (i = 1; i < argc; i++) | |
624 | { | |
0112cd26 | 625 | if (CONST_STRNEQ (argv[i], "-m")) |
252b5132 RH |
626 | { |
627 | if (argv[i][2] == '\0') | |
628 | { | |
629 | /* -m EMUL */ | |
630 | if (i < argc - 1) | |
631 | { | |
632 | emulation = argv[i + 1]; | |
633 | i++; | |
634 | } | |
635 | else | |
0125cdf2 | 636 | einfo (_("%P%F: missing argument to -m\n")); |
252b5132 RH |
637 | } |
638 | else if (strcmp (argv[i], "-mips1") == 0 | |
639 | || strcmp (argv[i], "-mips2") == 0 | |
640 | || strcmp (argv[i], "-mips3") == 0 | |
d1cf510e | 641 | || strcmp (argv[i], "-mips4") == 0 |
6f33421c CD |
642 | || strcmp (argv[i], "-mips5") == 0 |
643 | || strcmp (argv[i], "-mips32") == 0 | |
644 | || strcmp (argv[i], "-mips32r2") == 0 | |
5f74bc13 CD |
645 | || strcmp (argv[i], "-mips64") == 0 |
646 | || strcmp (argv[i], "-mips64r2") == 0) | |
252b5132 | 647 | { |
31d677f9 | 648 | /* FIXME: The arguments -mips1, -mips2, -mips3, etc. are |
252b5132 RH |
649 | passed to the linker by some MIPS compilers. They |
650 | generally tell the linker to use a slightly different | |
651 | library path. Perhaps someday these should be | |
652 | implemented as emulations; until then, we just ignore | |
653 | the arguments and hope that nobody ever creates | |
654 | emulations named ips1, ips2 or ips3. */ | |
655 | } | |
656 | else if (strcmp (argv[i], "-m486") == 0) | |
657 | { | |
658 | /* FIXME: The argument -m486 is passed to the linker on | |
659 | some Linux systems. Hope that nobody creates an | |
660 | emulation named 486. */ | |
661 | } | |
662 | else | |
663 | { | |
664 | /* -mEMUL */ | |
665 | emulation = &argv[i][2]; | |
666 | } | |
667 | } | |
668 | } | |
669 | ||
670 | return emulation; | |
671 | } | |
672 | ||
673 | /* If directory DIR contains an "ldscripts" subdirectory, | |
b34976b6 AM |
674 | add DIR to the library search path and return TRUE, |
675 | else return FALSE. */ | |
252b5132 | 676 | |
b34976b6 | 677 | static bfd_boolean |
1579bae1 | 678 | check_for_scripts_dir (char *dir) |
252b5132 RH |
679 | { |
680 | size_t dirlen; | |
681 | char *buf; | |
682 | struct stat s; | |
b34976b6 | 683 | bfd_boolean res; |
252b5132 RH |
684 | |
685 | dirlen = strlen (dir); | |
686 | /* sizeof counts the terminating NUL. */ | |
1579bae1 | 687 | buf = xmalloc (dirlen + sizeof ("/ldscripts")); |
252b5132 RH |
688 | sprintf (buf, "%s/ldscripts", dir); |
689 | ||
690 | res = stat (buf, &s) == 0 && S_ISDIR (s.st_mode); | |
691 | free (buf); | |
692 | if (res) | |
b34976b6 | 693 | ldfile_add_library_path (dir, FALSE); |
252b5132 RH |
694 | return res; |
695 | } | |
696 | ||
697 | /* Set the default directory for finding script files. | |
698 | Libraries will be searched for here too, but that's ok. | |
699 | We look for the "ldscripts" directory in: | |
700 | ||
cdc0d45e DJ |
701 | SCRIPTDIR (passed from Makefile) |
702 | (adjusted according to the current location of the binary) | |
252b5132 RH |
703 | SCRIPTDIR (passed from Makefile) |
704 | the dir where this program is (for using it from the build tree) | |
cdc0d45e | 705 | the dir where this program is/../lib |
0125cdf2 | 706 | (for installing the tool suite elsewhere). */ |
252b5132 RH |
707 | |
708 | static void | |
1579bae1 | 709 | set_scripts_dir (void) |
252b5132 RH |
710 | { |
711 | char *end, *dir; | |
712 | size_t dirlen; | |
5ed6aba4 | 713 | bfd_boolean found; |
252b5132 | 714 | |
cdc0d45e | 715 | dir = make_relative_prefix (program_name, BINDIR, SCRIPTDIR); |
cdc0d45e | 716 | if (dir) |
5ed6aba4 NC |
717 | { |
718 | found = check_for_scripts_dir (dir); | |
719 | free (dir); | |
720 | if (found) | |
721 | return; | |
722 | } | |
cdc0d45e | 723 | |
4ca1b790 | 724 | dir = make_relative_prefix (program_name, TOOLBINDIR, SCRIPTDIR); |
4ca1b790 | 725 | if (dir) |
5ed6aba4 NC |
726 | { |
727 | found = check_for_scripts_dir (dir); | |
728 | free (dir); | |
729 | if (found) | |
730 | return; | |
731 | } | |
4ca1b790 | 732 | |
252b5132 | 733 | if (check_for_scripts_dir (SCRIPTDIR)) |
6d5e62f8 KH |
734 | /* We've been installed normally. */ |
735 | return; | |
252b5132 RH |
736 | |
737 | /* Look for "ldscripts" in the dir where our binary is. */ | |
738 | end = strrchr (program_name, '/'); | |
5af11cab AM |
739 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
740 | { | |
741 | /* We could have \foo\bar, or /foo\bar. */ | |
742 | char *bslash = strrchr (program_name, '\\'); | |
0125cdf2 | 743 | |
2ab47eed | 744 | if (end == NULL || (bslash != NULL && bslash > end)) |
5af11cab AM |
745 | end = bslash; |
746 | } | |
747 | #endif | |
252b5132 RH |
748 | |
749 | if (end == NULL) | |
0125cdf2 NC |
750 | /* Don't look for ldscripts in the current directory. There is |
751 | too much potential for confusion. */ | |
752 | return; | |
252b5132 RH |
753 | |
754 | dirlen = end - program_name; | |
755 | /* Make a copy of program_name in dir. | |
756 | Leave room for later "/../lib". */ | |
1579bae1 | 757 | dir = xmalloc (dirlen + 8); |
252b5132 RH |
758 | strncpy (dir, program_name, dirlen); |
759 | dir[dirlen] = '\0'; | |
760 | ||
761 | if (check_for_scripts_dir (dir)) | |
5ed6aba4 NC |
762 | { |
763 | free (dir); | |
764 | return; | |
765 | } | |
252b5132 RH |
766 | |
767 | /* Look for "ldscripts" in <the dir where our binary is>/../lib. */ | |
768 | strcpy (dir + dirlen, "/../lib"); | |
5ed6aba4 | 769 | check_for_scripts_dir (dir); |
6d5e62f8 | 770 | free (dir); |
252b5132 RH |
771 | } |
772 | ||
773 | void | |
1579bae1 | 774 | add_ysym (const char *name) |
252b5132 | 775 | { |
1579bae1 | 776 | if (link_info.notice_hash == NULL) |
252b5132 | 777 | { |
1579bae1 | 778 | link_info.notice_hash = xmalloc (sizeof (struct bfd_hash_table)); |
66eb6687 AM |
779 | if (!bfd_hash_table_init_n (link_info.notice_hash, |
780 | bfd_hash_newfunc, | |
781 | sizeof (struct bfd_hash_entry), | |
782 | 61)) | |
252b5132 | 783 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); |
6d5e62f8 | 784 | } |
252b5132 | 785 | |
1579bae1 | 786 | if (bfd_hash_lookup (link_info.notice_hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
787 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); |
788 | } | |
789 | ||
790 | /* Record a symbol to be wrapped, from the --wrap option. */ | |
791 | ||
792 | void | |
1579bae1 | 793 | add_wrap (const char *name) |
252b5132 RH |
794 | { |
795 | if (link_info.wrap_hash == NULL) | |
796 | { | |
1579bae1 | 797 | link_info.wrap_hash = xmalloc (sizeof (struct bfd_hash_table)); |
66eb6687 AM |
798 | if (!bfd_hash_table_init_n (link_info.wrap_hash, |
799 | bfd_hash_newfunc, | |
800 | sizeof (struct bfd_hash_entry), | |
801 | 61)) | |
252b5132 RH |
802 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); |
803 | } | |
0125cdf2 | 804 | |
b34976b6 | 805 | if (bfd_hash_lookup (link_info.wrap_hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
806 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); |
807 | } | |
808 | ||
809 | /* Handle the -retain-symbols-file option. */ | |
810 | ||
811 | void | |
1579bae1 | 812 | add_keepsyms_file (const char *filename) |
252b5132 RH |
813 | { |
814 | FILE *file; | |
815 | char *buf; | |
816 | size_t bufsize; | |
817 | int c; | |
818 | ||
819 | if (link_info.strip == strip_some) | |
820 | einfo (_("%X%P: error: duplicate retain-symbols-file\n")); | |
821 | ||
822 | file = fopen (filename, "r"); | |
1579bae1 | 823 | if (file == NULL) |
252b5132 RH |
824 | { |
825 | bfd_set_error (bfd_error_system_call); | |
826 | einfo ("%X%P: %s: %E\n", filename); | |
827 | return; | |
828 | } | |
829 | ||
1579bae1 | 830 | link_info.keep_hash = xmalloc (sizeof (struct bfd_hash_table)); |
66eb6687 AM |
831 | if (!bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc, |
832 | sizeof (struct bfd_hash_entry))) | |
252b5132 RH |
833 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); |
834 | ||
835 | bufsize = 100; | |
1579bae1 | 836 | buf = xmalloc (bufsize); |
252b5132 RH |
837 | |
838 | c = getc (file); | |
839 | while (c != EOF) | |
840 | { | |
3882b010 | 841 | while (ISSPACE (c)) |
252b5132 RH |
842 | c = getc (file); |
843 | ||
844 | if (c != EOF) | |
845 | { | |
846 | size_t len = 0; | |
847 | ||
3882b010 | 848 | while (! ISSPACE (c) && c != EOF) |
252b5132 RH |
849 | { |
850 | buf[len] = c; | |
851 | ++len; | |
852 | if (len >= bufsize) | |
853 | { | |
854 | bufsize *= 2; | |
855 | buf = xrealloc (buf, bufsize); | |
856 | } | |
857 | c = getc (file); | |
858 | } | |
859 | ||
860 | buf[len] = '\0'; | |
861 | ||
1579bae1 | 862 | if (bfd_hash_lookup (link_info.keep_hash, buf, TRUE, TRUE) == NULL) |
252b5132 RH |
863 | einfo (_("%P%F: bfd_hash_lookup for insertion failed: %E\n")); |
864 | } | |
865 | } | |
866 | ||
867 | if (link_info.strip != strip_none) | |
868 | einfo (_("%P: `-retain-symbols-file' overrides `-s' and `-S'\n")); | |
869 | ||
5ed6aba4 | 870 | free (buf); |
252b5132 RH |
871 | link_info.strip = strip_some; |
872 | } | |
873 | \f | |
874 | /* Callbacks from the BFD linker routines. */ | |
875 | ||
876 | /* This is called when BFD has decided to include an archive member in | |
877 | a link. */ | |
878 | ||
b34976b6 | 879 | static bfd_boolean |
e1fffbe6 | 880 | add_archive_element (struct bfd_link_info *info, |
1579bae1 AM |
881 | bfd *abfd, |
882 | const char *name) | |
252b5132 RH |
883 | { |
884 | lang_input_statement_type *input; | |
885 | ||
1579bae1 | 886 | input = xmalloc (sizeof (lang_input_statement_type)); |
252b5132 RH |
887 | input->filename = abfd->filename; |
888 | input->local_sym_name = abfd->filename; | |
889 | input->the_bfd = abfd; | |
890 | input->asymbols = NULL; | |
891 | input->next = NULL; | |
b34976b6 AM |
892 | input->just_syms_flag = FALSE; |
893 | input->loaded = FALSE; | |
894 | input->search_dirs_flag = FALSE; | |
252b5132 RH |
895 | |
896 | /* FIXME: The following fields are not set: header.next, | |
897 | header.type, closed, passive_position, symbol_count, | |
898 | next_real_file, is_archive, target, real. This bit of code is | |
899 | from the old decode_library_subfile function. I don't know | |
900 | whether any of those fields matters. */ | |
901 | ||
902 | ldlang_add_file (input); | |
903 | ||
1579bae1 | 904 | if (config.map_file != NULL) |
252b5132 | 905 | { |
b34976b6 | 906 | static bfd_boolean header_printed; |
252b5132 RH |
907 | struct bfd_link_hash_entry *h; |
908 | bfd *from; | |
909 | int len; | |
910 | ||
e1fffbe6 | 911 | h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); |
252b5132 RH |
912 | |
913 | if (h == NULL) | |
914 | from = NULL; | |
915 | else | |
916 | { | |
917 | switch (h->type) | |
918 | { | |
919 | default: | |
920 | from = NULL; | |
921 | break; | |
922 | ||
923 | case bfd_link_hash_defined: | |
924 | case bfd_link_hash_defweak: | |
925 | from = h->u.def.section->owner; | |
926 | break; | |
927 | ||
928 | case bfd_link_hash_undefined: | |
929 | case bfd_link_hash_undefweak: | |
930 | from = h->u.undef.abfd; | |
931 | break; | |
932 | ||
933 | case bfd_link_hash_common: | |
934 | from = h->u.c.p->section->owner; | |
935 | break; | |
936 | } | |
937 | } | |
938 | ||
939 | if (! header_printed) | |
940 | { | |
941 | char buf[100]; | |
942 | ||
e3c8793a | 943 | sprintf (buf, _("Archive member included because of file (symbol)\n\n")); |
252b5132 | 944 | minfo ("%s", buf); |
b34976b6 | 945 | header_printed = TRUE; |
252b5132 RH |
946 | } |
947 | ||
948 | if (bfd_my_archive (abfd) == NULL) | |
949 | { | |
950 | minfo ("%s", bfd_get_filename (abfd)); | |
951 | len = strlen (bfd_get_filename (abfd)); | |
952 | } | |
953 | else | |
954 | { | |
955 | minfo ("%s(%s)", bfd_get_filename (bfd_my_archive (abfd)), | |
956 | bfd_get_filename (abfd)); | |
957 | len = (strlen (bfd_get_filename (bfd_my_archive (abfd))) | |
958 | + strlen (bfd_get_filename (abfd)) | |
959 | + 2); | |
960 | } | |
961 | ||
962 | if (len >= 29) | |
963 | { | |
964 | print_nl (); | |
965 | len = 0; | |
966 | } | |
967 | while (len < 30) | |
968 | { | |
969 | print_space (); | |
970 | ++len; | |
971 | } | |
972 | ||
973 | if (from != NULL) | |
974 | minfo ("%B ", from); | |
975 | if (h != NULL) | |
976 | minfo ("(%T)\n", h->root.string); | |
977 | else | |
978 | minfo ("(%s)\n", name); | |
979 | } | |
980 | ||
981 | if (trace_files || trace_file_tries) | |
982 | info_msg ("%I\n", input); | |
983 | ||
b34976b6 | 984 | return TRUE; |
252b5132 RH |
985 | } |
986 | ||
987 | /* This is called when BFD has discovered a symbol which is defined | |
988 | multiple times. */ | |
989 | ||
b34976b6 | 990 | static bfd_boolean |
1579bae1 AM |
991 | multiple_definition (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
992 | const char *name, | |
993 | bfd *obfd, | |
994 | asection *osec, | |
995 | bfd_vma oval, | |
996 | bfd *nbfd, | |
997 | asection *nsec, | |
998 | bfd_vma nval) | |
252b5132 RH |
999 | { |
1000 | /* If either section has the output_section field set to | |
1001 | bfd_abs_section_ptr, it means that the section is being | |
1002 | discarded, and this is not really a multiple definition at all. | |
1003 | FIXME: It would be cleaner to somehow ignore symbols defined in | |
1004 | sections which are being discarded. */ | |
1005 | if ((osec->output_section != NULL | |
1006 | && ! bfd_is_abs_section (osec) | |
1007 | && bfd_is_abs_section (osec->output_section)) | |
1008 | || (nsec->output_section != NULL | |
1009 | && ! bfd_is_abs_section (nsec) | |
1010 | && bfd_is_abs_section (nsec->output_section))) | |
b34976b6 | 1011 | return TRUE; |
252b5132 RH |
1012 | |
1013 | einfo (_("%X%C: multiple definition of `%T'\n"), | |
1014 | nbfd, nsec, nval, name); | |
1579bae1 | 1015 | if (obfd != NULL) |
252b5132 | 1016 | einfo (_("%D: first defined here\n"), obfd, osec, oval); |
9b14b192 NC |
1017 | |
1018 | if (command_line.relax) | |
1019 | { | |
1020 | einfo (_("%P: Disabling relaxation: it will not work with multiple definitions\n")); | |
1021 | command_line.relax = 0; | |
1022 | } | |
6d5e62f8 | 1023 | |
b34976b6 | 1024 | return TRUE; |
252b5132 RH |
1025 | } |
1026 | ||
1027 | /* This is called when there is a definition of a common symbol, or | |
1028 | when a common symbol is found for a symbol that is already defined, | |
1029 | or when two common symbols are found. We only do something if | |
1030 | -warn-common was used. */ | |
1031 | ||
b34976b6 | 1032 | static bfd_boolean |
1579bae1 AM |
1033 | multiple_common (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1034 | const char *name, | |
1035 | bfd *obfd, | |
1036 | enum bfd_link_hash_type otype, | |
1037 | bfd_vma osize, | |
1038 | bfd *nbfd, | |
1039 | enum bfd_link_hash_type ntype, | |
1040 | bfd_vma nsize) | |
252b5132 RH |
1041 | { |
1042 | if (! config.warn_common) | |
b34976b6 | 1043 | return TRUE; |
252b5132 RH |
1044 | |
1045 | if (ntype == bfd_link_hash_defined | |
1046 | || ntype == bfd_link_hash_defweak | |
1047 | || ntype == bfd_link_hash_indirect) | |
1048 | { | |
1049 | ASSERT (otype == bfd_link_hash_common); | |
1050 | einfo (_("%B: warning: definition of `%T' overriding common\n"), | |
1051 | nbfd, name); | |
1052 | if (obfd != NULL) | |
1053 | einfo (_("%B: warning: common is here\n"), obfd); | |
1054 | } | |
1055 | else if (otype == bfd_link_hash_defined | |
1056 | || otype == bfd_link_hash_defweak | |
1057 | || otype == bfd_link_hash_indirect) | |
1058 | { | |
1059 | ASSERT (ntype == bfd_link_hash_common); | |
1060 | einfo (_("%B: warning: common of `%T' overridden by definition\n"), | |
1061 | nbfd, name); | |
1062 | if (obfd != NULL) | |
1063 | einfo (_("%B: warning: defined here\n"), obfd); | |
1064 | } | |
1065 | else | |
1066 | { | |
1067 | ASSERT (otype == bfd_link_hash_common && ntype == bfd_link_hash_common); | |
1068 | if (osize > nsize) | |
1069 | { | |
1070 | einfo (_("%B: warning: common of `%T' overridden by larger common\n"), | |
1071 | nbfd, name); | |
1072 | if (obfd != NULL) | |
1073 | einfo (_("%B: warning: larger common is here\n"), obfd); | |
1074 | } | |
1075 | else if (nsize > osize) | |
1076 | { | |
1077 | einfo (_("%B: warning: common of `%T' overriding smaller common\n"), | |
1078 | nbfd, name); | |
1079 | if (obfd != NULL) | |
1080 | einfo (_("%B: warning: smaller common is here\n"), obfd); | |
1081 | } | |
1082 | else | |
1083 | { | |
1084 | einfo (_("%B: warning: multiple common of `%T'\n"), nbfd, name); | |
1085 | if (obfd != NULL) | |
1086 | einfo (_("%B: warning: previous common is here\n"), obfd); | |
1087 | } | |
1088 | } | |
1089 | ||
b34976b6 | 1090 | return TRUE; |
252b5132 RH |
1091 | } |
1092 | ||
1093 | /* This is called when BFD has discovered a set element. H is the | |
1094 | entry in the linker hash table for the set. SECTION and VALUE | |
1095 | represent a value which should be added to the set. */ | |
1096 | ||
b34976b6 | 1097 | static bfd_boolean |
1579bae1 AM |
1098 | add_to_set (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1099 | struct bfd_link_hash_entry *h, | |
1100 | bfd_reloc_code_real_type reloc, | |
1101 | bfd *abfd, | |
1102 | asection *section, | |
1103 | bfd_vma value) | |
252b5132 RH |
1104 | { |
1105 | if (config.warn_constructors) | |
1106 | einfo (_("%P: warning: global constructor %s used\n"), | |
1107 | h->root.string); | |
1108 | ||
1109 | if (! config.build_constructors) | |
b34976b6 | 1110 | return TRUE; |
252b5132 | 1111 | |
1579bae1 | 1112 | ldctor_add_set_entry (h, reloc, NULL, section, value); |
252b5132 RH |
1113 | |
1114 | if (h->type == bfd_link_hash_new) | |
1115 | { | |
1116 | h->type = bfd_link_hash_undefined; | |
1117 | h->u.undef.abfd = abfd; | |
1118 | /* We don't call bfd_link_add_undef to add this to the list of | |
1119 | undefined symbols because we are going to define it | |
1120 | ourselves. */ | |
1121 | } | |
1122 | ||
b34976b6 | 1123 | return TRUE; |
252b5132 RH |
1124 | } |
1125 | ||
1126 | /* This is called when BFD has discovered a constructor. This is only | |
1127 | called for some object file formats--those which do not handle | |
1128 | constructors in some more clever fashion. This is similar to | |
1129 | adding an element to a set, but less general. */ | |
1130 | ||
b34976b6 | 1131 | static bfd_boolean |
1579bae1 AM |
1132 | constructor_callback (struct bfd_link_info *info, |
1133 | bfd_boolean constructor, | |
1134 | const char *name, | |
1135 | bfd *abfd, | |
1136 | asection *section, | |
1137 | bfd_vma value) | |
252b5132 RH |
1138 | { |
1139 | char *s; | |
1140 | struct bfd_link_hash_entry *h; | |
1141 | char set_name[1 + sizeof "__CTOR_LIST__"]; | |
1142 | ||
1143 | if (config.warn_constructors) | |
1144 | einfo (_("%P: warning: global constructor %s used\n"), name); | |
1145 | ||
1146 | if (! config.build_constructors) | |
b34976b6 | 1147 | return TRUE; |
252b5132 RH |
1148 | |
1149 | /* Ensure that BFD_RELOC_CTOR exists now, so that we can give a | |
1150 | useful error message. */ | |
f13a99db | 1151 | if (bfd_reloc_type_lookup (link_info.output_bfd, BFD_RELOC_CTOR) == NULL |
e1fffbe6 | 1152 | && (info->relocatable |
252b5132 RH |
1153 | || bfd_reloc_type_lookup (abfd, BFD_RELOC_CTOR) == NULL)) |
1154 | einfo (_("%P%F: BFD backend error: BFD_RELOC_CTOR unsupported\n")); | |
1155 | ||
1156 | s = set_name; | |
1157 | if (bfd_get_symbol_leading_char (abfd) != '\0') | |
1158 | *s++ = bfd_get_symbol_leading_char (abfd); | |
1159 | if (constructor) | |
1160 | strcpy (s, "__CTOR_LIST__"); | |
1161 | else | |
1162 | strcpy (s, "__DTOR_LIST__"); | |
1163 | ||
b34976b6 | 1164 | h = bfd_link_hash_lookup (info->hash, set_name, TRUE, TRUE, TRUE); |
252b5132 RH |
1165 | if (h == (struct bfd_link_hash_entry *) NULL) |
1166 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); | |
1167 | if (h->type == bfd_link_hash_new) | |
1168 | { | |
1169 | h->type = bfd_link_hash_undefined; | |
1170 | h->u.undef.abfd = abfd; | |
1171 | /* We don't call bfd_link_add_undef to add this to the list of | |
1172 | undefined symbols because we are going to define it | |
1173 | ourselves. */ | |
1174 | } | |
1175 | ||
1176 | ldctor_add_set_entry (h, BFD_RELOC_CTOR, name, section, value); | |
b34976b6 | 1177 | return TRUE; |
252b5132 RH |
1178 | } |
1179 | ||
1180 | /* A structure used by warning_callback to pass information through | |
1181 | bfd_map_over_sections. */ | |
1182 | ||
0125cdf2 NC |
1183 | struct warning_callback_info |
1184 | { | |
b34976b6 | 1185 | bfd_boolean found; |
252b5132 RH |
1186 | const char *warning; |
1187 | const char *symbol; | |
1188 | asymbol **asymbols; | |
1189 | }; | |
1190 | ||
1191 | /* This is called when there is a reference to a warning symbol. */ | |
1192 | ||
b34976b6 | 1193 | static bfd_boolean |
1579bae1 AM |
1194 | warning_callback (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1195 | const char *warning, | |
1196 | const char *symbol, | |
1197 | bfd *abfd, | |
1198 | asection *section, | |
1199 | bfd_vma address) | |
252b5132 RH |
1200 | { |
1201 | /* This is a hack to support warn_multiple_gp. FIXME: This should | |
1202 | have a cleaner interface, but what? */ | |
1203 | if (! config.warn_multiple_gp | |
1204 | && strcmp (warning, "using multiple gp values") == 0) | |
b34976b6 | 1205 | return TRUE; |
252b5132 RH |
1206 | |
1207 | if (section != NULL) | |
300475fe | 1208 | einfo ("%C: %s%s\n", abfd, section, address, _("warning: "), warning); |
252b5132 | 1209 | else if (abfd == NULL) |
300475fe | 1210 | einfo ("%P: %s%s\n", _("warning: "), warning); |
252b5132 | 1211 | else if (symbol == NULL) |
300475fe | 1212 | einfo ("%B: %s%s\n", abfd, _("warning: "), warning); |
252b5132 RH |
1213 | else |
1214 | { | |
1215 | lang_input_statement_type *entry; | |
1216 | asymbol **asymbols; | |
1217 | struct warning_callback_info info; | |
1218 | ||
1219 | /* Look through the relocs to see if we can find a plausible | |
1220 | address. */ | |
252b5132 RH |
1221 | entry = (lang_input_statement_type *) abfd->usrdata; |
1222 | if (entry != NULL && entry->asymbols != NULL) | |
1223 | asymbols = entry->asymbols; | |
1224 | else | |
1225 | { | |
1226 | long symsize; | |
1227 | long symbol_count; | |
1228 | ||
1229 | symsize = bfd_get_symtab_upper_bound (abfd); | |
1230 | if (symsize < 0) | |
1231 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
1579bae1 | 1232 | asymbols = xmalloc (symsize); |
252b5132 RH |
1233 | symbol_count = bfd_canonicalize_symtab (abfd, asymbols); |
1234 | if (symbol_count < 0) | |
1235 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
1236 | if (entry != NULL) | |
1237 | { | |
1238 | entry->asymbols = asymbols; | |
1239 | entry->symbol_count = symbol_count; | |
1240 | } | |
1241 | } | |
1242 | ||
b34976b6 | 1243 | info.found = FALSE; |
252b5132 RH |
1244 | info.warning = warning; |
1245 | info.symbol = symbol; | |
1246 | info.asymbols = asymbols; | |
1579bae1 | 1247 | bfd_map_over_sections (abfd, warning_find_reloc, &info); |
252b5132 RH |
1248 | |
1249 | if (! info.found) | |
300475fe | 1250 | einfo ("%B: %s%s\n", abfd, _("warning: "), warning); |
252b5132 RH |
1251 | |
1252 | if (entry == NULL) | |
1253 | free (asymbols); | |
1254 | } | |
1255 | ||
b34976b6 | 1256 | return TRUE; |
252b5132 RH |
1257 | } |
1258 | ||
1259 | /* This is called by warning_callback for each section. It checks the | |
1260 | relocs of the section to see if it can find a reference to the | |
1261 | symbol which triggered the warning. If it can, it uses the reloc | |
1262 | to give an error message with a file and line number. */ | |
1263 | ||
1264 | static void | |
1579bae1 | 1265 | warning_find_reloc (bfd *abfd, asection *sec, void *iarg) |
252b5132 | 1266 | { |
1579bae1 | 1267 | struct warning_callback_info *info = iarg; |
252b5132 RH |
1268 | long relsize; |
1269 | arelent **relpp; | |
1270 | long relcount; | |
1271 | arelent **p, **pend; | |
1272 | ||
1273 | if (info->found) | |
1274 | return; | |
1275 | ||
1276 | relsize = bfd_get_reloc_upper_bound (abfd, sec); | |
1277 | if (relsize < 0) | |
1278 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1279 | if (relsize == 0) | |
1280 | return; | |
1281 | ||
1579bae1 | 1282 | relpp = xmalloc (relsize); |
252b5132 RH |
1283 | relcount = bfd_canonicalize_reloc (abfd, sec, relpp, info->asymbols); |
1284 | if (relcount < 0) | |
1285 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1286 | ||
1287 | p = relpp; | |
1288 | pend = p + relcount; | |
1289 | for (; p < pend && *p != NULL; p++) | |
1290 | { | |
1291 | arelent *q = *p; | |
1292 | ||
1293 | if (q->sym_ptr_ptr != NULL | |
1294 | && *q->sym_ptr_ptr != NULL | |
1295 | && strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), info->symbol) == 0) | |
1296 | { | |
1297 | /* We found a reloc for the symbol we are looking for. */ | |
300475fe HPN |
1298 | einfo ("%C: %s%s\n", abfd, sec, q->address, _("warning: "), |
1299 | info->warning); | |
b34976b6 | 1300 | info->found = TRUE; |
252b5132 RH |
1301 | break; |
1302 | } | |
1303 | } | |
1304 | ||
1305 | free (relpp); | |
1306 | } | |
1307 | ||
1308 | /* This is called when an undefined symbol is found. */ | |
1309 | ||
b34976b6 | 1310 | static bfd_boolean |
1579bae1 AM |
1311 | undefined_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1312 | const char *name, | |
1313 | bfd *abfd, | |
1314 | asection *section, | |
1315 | bfd_vma address, | |
0b28295d | 1316 | bfd_boolean error) |
252b5132 RH |
1317 | { |
1318 | static char *error_name; | |
1319 | static unsigned int error_count; | |
1320 | ||
1321 | #define MAX_ERRORS_IN_A_ROW 5 | |
1322 | ||
1323 | if (config.warn_once) | |
1324 | { | |
1325 | static struct bfd_hash_table *hash; | |
1326 | ||
1327 | /* Only warn once about a particular undefined symbol. */ | |
252b5132 RH |
1328 | if (hash == NULL) |
1329 | { | |
1579bae1 | 1330 | hash = xmalloc (sizeof (struct bfd_hash_table)); |
66eb6687 AM |
1331 | if (!bfd_hash_table_init (hash, bfd_hash_newfunc, |
1332 | sizeof (struct bfd_hash_entry))) | |
252b5132 RH |
1333 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); |
1334 | } | |
1335 | ||
b34976b6 AM |
1336 | if (bfd_hash_lookup (hash, name, FALSE, FALSE) != NULL) |
1337 | return TRUE; | |
252b5132 | 1338 | |
b34976b6 | 1339 | if (bfd_hash_lookup (hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
1340 | einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); |
1341 | } | |
1342 | ||
1343 | /* We never print more than a reasonable number of errors in a row | |
1344 | for a single symbol. */ | |
1579bae1 | 1345 | if (error_name != NULL |
252b5132 RH |
1346 | && strcmp (name, error_name) == 0) |
1347 | ++error_count; | |
1348 | else | |
1349 | { | |
1350 | error_count = 0; | |
1579bae1 | 1351 | if (error_name != NULL) |
252b5132 | 1352 | free (error_name); |
d1b2b2dc | 1353 | error_name = xstrdup (name); |
252b5132 RH |
1354 | } |
1355 | ||
1356 | if (section != NULL) | |
1357 | { | |
1358 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1359 | { |
0b28295d ILT |
1360 | if (error) |
1361 | einfo (_("%X%C: undefined reference to `%T'\n"), | |
1362 | abfd, section, address, name); | |
1363 | else | |
1364 | einfo (_("%C: warning: undefined reference to `%T'\n"), | |
1365 | abfd, section, address, name); | |
b6f29aaa | 1366 | } |
252b5132 | 1367 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1368 | { |
1369 | if (error) | |
1370 | einfo (_("%X%D: more undefined references to `%T' follow\n"), | |
1371 | abfd, section, address, name); | |
1372 | else | |
1373 | einfo (_("%D: warning: more undefined references to `%T' follow\n"), | |
1374 | abfd, section, address, name); | |
1375 | } | |
1376 | else if (error) | |
1377 | einfo ("%X"); | |
252b5132 RH |
1378 | } |
1379 | else | |
1380 | { | |
1381 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1382 | { |
0b28295d ILT |
1383 | if (error) |
1384 | einfo (_("%X%B: undefined reference to `%T'\n"), | |
1385 | abfd, name); | |
1386 | else | |
1387 | einfo (_("%B: warning: undefined reference to `%T'\n"), | |
1388 | abfd, name); | |
b6f29aaa | 1389 | } |
252b5132 | 1390 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1391 | { |
1392 | if (error) | |
1393 | einfo (_("%X%B: more undefined references to `%T' follow\n"), | |
1394 | abfd, name); | |
1395 | else | |
1396 | einfo (_("%B: warning: more undefined references to `%T' follow\n"), | |
1397 | abfd, name); | |
1398 | } | |
1399 | else if (error) | |
1400 | einfo ("%X"); | |
252b5132 RH |
1401 | } |
1402 | ||
b34976b6 | 1403 | return TRUE; |
252b5132 RH |
1404 | } |
1405 | ||
8aae64e6 AO |
1406 | /* Counter to limit the number of relocation overflow error messages |
1407 | to print. Errors are printed as it is decremented. When it's | |
1408 | called and the counter is zero, a final message is printed | |
1409 | indicating more relocations were omitted. When it gets to -1, no | |
1410 | such errors are printed. If it's initially set to a value less | |
1411 | than -1, all such errors will be printed (--verbose does this). */ | |
1412 | ||
1413 | int overflow_cutoff_limit = 10; | |
1414 | ||
252b5132 RH |
1415 | /* This is called when a reloc overflows. */ |
1416 | ||
b34976b6 | 1417 | static bfd_boolean |
1579bae1 | 1418 | reloc_overflow (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
dfeffb9f | 1419 | struct bfd_link_hash_entry *entry, |
1579bae1 AM |
1420 | const char *name, |
1421 | const char *reloc_name, | |
1422 | bfd_vma addend, | |
1423 | bfd *abfd, | |
1424 | asection *section, | |
1425 | bfd_vma address) | |
252b5132 | 1426 | { |
8aae64e6 AO |
1427 | if (overflow_cutoff_limit == -1) |
1428 | return TRUE; | |
1429 | ||
e1fffbe6 | 1430 | einfo ("%X%C:", abfd, section, address); |
8aae64e6 AO |
1431 | |
1432 | if (overflow_cutoff_limit >= 0 | |
1433 | && overflow_cutoff_limit-- == 0) | |
1434 | { | |
1435 | einfo (_(" additional relocation overflows omitted from the output\n")); | |
1436 | return TRUE; | |
1437 | } | |
1438 | ||
dfeffb9f L |
1439 | if (entry) |
1440 | { | |
1441 | while (entry->type == bfd_link_hash_indirect | |
1442 | || entry->type == bfd_link_hash_warning) | |
1443 | entry = entry->u.i.link; | |
1444 | switch (entry->type) | |
1445 | { | |
1446 | case bfd_link_hash_undefined: | |
1447 | case bfd_link_hash_undefweak: | |
1448 | einfo (_(" relocation truncated to fit: %s against undefined symbol `%T'"), | |
1449 | reloc_name, entry->root.string); | |
1450 | break; | |
1451 | case bfd_link_hash_defined: | |
1452 | case bfd_link_hash_defweak: | |
1453 | einfo (_(" relocation truncated to fit: %s against symbol `%T' defined in %A section in %B"), | |
1454 | reloc_name, entry->root.string, | |
a6e1b90f L |
1455 | entry->u.def.section, |
1456 | entry->u.def.section == bfd_abs_section_ptr | |
f13a99db | 1457 | ? link_info.output_bfd : entry->u.def.section->owner); |
dfeffb9f L |
1458 | break; |
1459 | default: | |
1460 | abort (); | |
1461 | break; | |
1462 | } | |
1463 | } | |
1464 | else | |
1465 | einfo (_(" relocation truncated to fit: %s against `%T'"), | |
1466 | reloc_name, name); | |
252b5132 RH |
1467 | if (addend != 0) |
1468 | einfo ("+%v", addend); | |
1469 | einfo ("\n"); | |
b34976b6 | 1470 | return TRUE; |
252b5132 RH |
1471 | } |
1472 | ||
1473 | /* This is called when a dangerous relocation is made. */ | |
1474 | ||
b34976b6 | 1475 | static bfd_boolean |
1579bae1 AM |
1476 | reloc_dangerous (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1477 | const char *message, | |
1478 | bfd *abfd, | |
1479 | asection *section, | |
1480 | bfd_vma address) | |
252b5132 | 1481 | { |
e1fffbe6 AM |
1482 | einfo (_("%X%C: dangerous relocation: %s\n"), |
1483 | abfd, section, address, message); | |
b34976b6 | 1484 | return TRUE; |
252b5132 RH |
1485 | } |
1486 | ||
1487 | /* This is called when a reloc is being generated attached to a symbol | |
1488 | that is not being output. */ | |
1489 | ||
b34976b6 | 1490 | static bfd_boolean |
1579bae1 AM |
1491 | unattached_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1492 | const char *name, | |
1493 | bfd *abfd, | |
1494 | asection *section, | |
1495 | bfd_vma address) | |
252b5132 | 1496 | { |
e1fffbe6 AM |
1497 | einfo (_("%X%C: reloc refers to symbol `%T' which is not being output\n"), |
1498 | abfd, section, address, name); | |
b34976b6 | 1499 | return TRUE; |
252b5132 RH |
1500 | } |
1501 | ||
1502 | /* This is called if link_info.notice_all is set, or when a symbol in | |
1503 | link_info.notice_hash is found. Symbols are put in notice_hash | |
1504 | using the -y option. */ | |
1505 | ||
b34976b6 | 1506 | static bfd_boolean |
1579bae1 AM |
1507 | notice (struct bfd_link_info *info, |
1508 | const char *name, | |
1509 | bfd *abfd, | |
1510 | asection *section, | |
1511 | bfd_vma value) | |
252b5132 | 1512 | { |
5061a885 AM |
1513 | if (name == NULL) |
1514 | { | |
1515 | if (command_line.cref || nocrossref_list != NULL) | |
1516 | return handle_asneeded_cref (abfd, value); | |
1517 | return TRUE; | |
1518 | } | |
1519 | ||
252b5132 RH |
1520 | if (! info->notice_all |
1521 | || (info->notice_hash != NULL | |
b34976b6 | 1522 | && bfd_hash_lookup (info->notice_hash, name, FALSE, FALSE) != NULL)) |
252b5132 RH |
1523 | { |
1524 | if (bfd_is_und_section (section)) | |
1525 | einfo ("%B: reference to %s\n", abfd, name); | |
1526 | else | |
1527 | einfo ("%B: definition of %s\n", abfd, name); | |
1528 | } | |
1529 | ||
1530 | if (command_line.cref || nocrossref_list != NULL) | |
1531 | add_cref (name, abfd, section, value); | |
1532 | ||
b34976b6 | 1533 | return TRUE; |
252b5132 | 1534 | } |