Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Main program of GNU linker. |
4e5bae56 | 2 | Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
3db64b00 | 3 | 2002, 2003, 2004, 2005, 2006, 2007 |
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 | ||
63 | char *default_target; | |
64 | const char *output_filename = "a.out"; | |
65 | ||
66 | /* Name this program was invoked by. */ | |
67 | char *program_name; | |
68 | ||
9c8ebd6a | 69 | /* The prefix for system library directories. */ |
e2243057 | 70 | const char *ld_sysroot; |
9c8ebd6a | 71 | |
3fe38064 NC |
72 | /* The canonical representation of ld_sysroot. */ |
73 | char * ld_canon_sysroot; | |
74 | int ld_canon_sysroot_len; | |
75 | ||
6d5e62f8 | 76 | /* The file that we're creating. */ |
252b5132 RH |
77 | bfd *output_bfd = 0; |
78 | ||
79 | /* Set by -G argument, for MIPS ECOFF target. */ | |
80 | int g_switch_value = 8; | |
81 | ||
82 | /* Nonzero means print names of input files as processed. */ | |
b34976b6 | 83 | bfd_boolean trace_files; |
252b5132 RH |
84 | |
85 | /* Nonzero means same, but note open failures, too. */ | |
b34976b6 | 86 | bfd_boolean trace_file_tries; |
252b5132 RH |
87 | |
88 | /* Nonzero means version number was printed, so exit successfully | |
89 | instead of complaining if no input files are given. */ | |
b34976b6 | 90 | bfd_boolean version_printed; |
252b5132 RH |
91 | |
92 | /* Nonzero means link in every member of an archive. */ | |
b34976b6 | 93 | bfd_boolean whole_archive; |
252b5132 | 94 | |
4a43e768 AM |
95 | /* Nonzero means create DT_NEEDED entries only if a dynamic library |
96 | actually satisfies some reference in a regular object. */ | |
97 | bfd_boolean as_needed; | |
98 | ||
e56f61be L |
99 | /* Nonzero means never create DT_NEEDED entries for dynamic libraries |
100 | in DT_NEEDED tags. */ | |
101 | bfd_boolean add_needed = TRUE; | |
102 | ||
b34976b6 AM |
103 | /* TRUE if we should demangle symbol names. */ |
104 | bfd_boolean demangling; | |
252b5132 RH |
105 | |
106 | args_type command_line; | |
107 | ||
108 | ld_config_type config; | |
109 | ||
bcaa7b3e L |
110 | sort_type sort_section; |
111 | ||
e2243057 RS |
112 | static const char *get_sysroot |
113 | (int, char **); | |
0125cdf2 | 114 | static char *get_emulation |
1579bae1 | 115 | (int, char **); |
0125cdf2 | 116 | static void set_scripts_dir |
1579bae1 | 117 | (void); |
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 | { |
c92c35e7 AC |
176 | if (output_bfd) |
177 | bfd_cache_close (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; |
b34976b6 | 255 | command_line.check_section_addresses = TRUE; |
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; |
24718e3b | 278 | |
252b5132 | 279 | ldfile_add_arch (""); |
252b5132 RH |
280 | emulation = get_emulation (argc, argv); |
281 | ldemul_choose_mode (emulation); | |
742aeb63 | 282 | default_target = ldemul_choose_target (argc, argv); |
252b5132 RH |
283 | lang_init (); |
284 | ldemul_before_parse (); | |
b34976b6 | 285 | lang_has_input_file = FALSE; |
252b5132 RH |
286 | parse_args (argc, argv); |
287 | ||
2d643429 NC |
288 | if (config.hash_table_size != 0) |
289 | bfd_hash_set_default_size (config.hash_table_size); | |
290 | ||
252b5132 RH |
291 | ldemul_set_symbols (); |
292 | ||
1049f94e | 293 | if (link_info.relocatable) |
252b5132 | 294 | { |
57316bff | 295 | if (link_info.gc_sections) |
252b5132 | 296 | einfo ("%P%F: --gc-sections and -r may not be used together\n"); |
252b5132 RH |
297 | else if (command_line.relax) |
298 | einfo (_("%P%F: --relax and -r may not be used together\n")); | |
299 | if (link_info.shared) | |
300 | einfo (_("%P%F: -r and -shared may not be used together\n")); | |
301 | } | |
302 | ||
d8cf8b51 L |
303 | /* We may have -Bsymbolic, -Bsymbolic-functions, --dynamic-list-data, |
304 | --dynamic-list-cpp-new, --dynamic-list-cpp-typeinfo and | |
305 | --dynamic-list FILE. -Bsymbolic and -Bsymbolic-functions are | |
306 | for shared libraries. -Bsymbolic overrides all others and vice | |
307 | versa. */ | |
308 | switch (command_line.symbolic) | |
309 | { | |
310 | case symbolic_unset: | |
311 | break; | |
312 | case symbolic: | |
313 | /* -Bsymbolic is for shared library only. */ | |
314 | if (link_info.shared) | |
315 | { | |
316 | link_info.symbolic = TRUE; | |
317 | /* Should we free the unused memory? */ | |
318 | link_info.dynamic_list = NULL; | |
319 | command_line.dynamic_list = dynamic_list_unset; | |
320 | } | |
321 | break; | |
322 | case symbolic_functions: | |
323 | /* -Bsymbolic-functions is for shared library only. */ | |
324 | if (link_info.shared) | |
325 | command_line.dynamic_list = dynamic_list_data; | |
326 | break; | |
327 | } | |
328 | ||
329 | switch (command_line.dynamic_list) | |
330 | { | |
331 | case dynamic_list_unset: | |
332 | break; | |
333 | case dynamic_list_data: | |
334 | link_info.dynamic_data = TRUE; | |
335 | case dynamic_list: | |
336 | link_info.dynamic = TRUE; | |
337 | break; | |
338 | } | |
339 | ||
7333607e JJ |
340 | if (! link_info.shared) |
341 | { | |
342 | if (command_line.filter_shlib) | |
e97cb84f | 343 | einfo (_("%P%F: -F may not be used without -shared\n")); |
7333607e | 344 | if (command_line.auxiliary_filters) |
e97cb84f | 345 | einfo (_("%P%F: -f may not be used without -shared\n")); |
7333607e JJ |
346 | } |
347 | ||
36af4a4e JJ |
348 | if (! link_info.shared || link_info.pie) |
349 | link_info.executable = TRUE; | |
350 | ||
252b5132 RH |
351 | /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I |
352 | don't see how else this can be handled, since in this case we | |
353 | must preserve all externally visible symbols. */ | |
1049f94e | 354 | if (link_info.relocatable && link_info.strip == strip_all) |
252b5132 RH |
355 | { |
356 | link_info.strip = strip_debugger; | |
f5fa8ca2 | 357 | if (link_info.discard == discard_sec_merge) |
252b5132 RH |
358 | link_info.discard = discard_all; |
359 | } | |
360 | ||
361 | /* This essentially adds another -L directory so this must be done after | |
362 | the -L's in argv have been processed. */ | |
363 | set_scripts_dir (); | |
364 | ||
14be8564 L |
365 | /* If we have not already opened and parsed a linker script, |
366 | try the default script from command line first. */ | |
367 | if (saved_script_handle == NULL | |
368 | && command_line.default_script != NULL) | |
369 | { | |
370 | ldfile_open_command_file (command_line.default_script); | |
371 | parser_input = input_script; | |
372 | yyparse (); | |
373 | } | |
374 | ||
b9a8de1e NC |
375 | /* If we have not already opened and parsed a linker script |
376 | read the emulation's appropriate default script. */ | |
b90e1c6f | 377 | if (saved_script_handle == NULL) |
252b5132 | 378 | { |
252b5132 | 379 | int isfile; |
b7a26f91 | 380 | char *s = ldemul_get_script (&isfile); |
252b5132 RH |
381 | |
382 | if (isfile) | |
383 | ldfile_open_command_file (s); | |
384 | else | |
b7a26f91 | 385 | { |
252b5132 RH |
386 | lex_string = s; |
387 | lex_redirect (s); | |
388 | } | |
389 | parser_input = input_script; | |
390 | yyparse (); | |
391 | lex_string = NULL; | |
392 | } | |
393 | ||
b9a8de1e NC |
394 | if (trace_file_tries) |
395 | { | |
9cb61eab AM |
396 | if (saved_script_handle) |
397 | info_msg (_("using external linker script:")); | |
398 | else | |
399 | info_msg (_("using internal linker script:")); | |
400 | info_msg ("\n==================================================\n"); | |
b9a8de1e NC |
401 | |
402 | if (saved_script_handle) | |
403 | { | |
74699268 | 404 | static const int ld_bufsz = 8193; |
b9a8de1e | 405 | size_t n; |
74699268 | 406 | char *buf = xmalloc (ld_bufsz); |
b9a8de1e NC |
407 | |
408 | rewind (saved_script_handle); | |
74699268 | 409 | while ((n = fread (buf, 1, ld_bufsz - 1, saved_script_handle)) > 0) |
b9a8de1e | 410 | { |
b7a26f91 | 411 | buf[n] = 0; |
b9a8de1e NC |
412 | info_msg (buf); |
413 | } | |
414 | rewind (saved_script_handle); | |
415 | free (buf); | |
416 | } | |
417 | else | |
418 | { | |
419 | int isfile; | |
420 | ||
b7a26f91 | 421 | info_msg (ldemul_get_script (&isfile)); |
b9a8de1e | 422 | } |
b7a26f91 | 423 | |
b9a8de1e NC |
424 | info_msg ("\n==================================================\n"); |
425 | } | |
426 | ||
252b5132 RH |
427 | lang_final (); |
428 | ||
b34976b6 | 429 | if (!lang_has_input_file) |
252b5132 RH |
430 | { |
431 | if (version_printed) | |
432 | xexit (0); | |
433 | einfo (_("%P%F: no input files\n")); | |
434 | } | |
435 | ||
436 | if (trace_files) | |
0125cdf2 | 437 | info_msg (_("%P: mode %s\n"), emulation); |
252b5132 RH |
438 | |
439 | ldemul_after_parse (); | |
440 | ||
252b5132 RH |
441 | if (config.map_filename) |
442 | { | |
443 | if (strcmp (config.map_filename, "-") == 0) | |
444 | { | |
445 | config.map_file = stdout; | |
446 | } | |
447 | else | |
448 | { | |
449 | config.map_file = fopen (config.map_filename, FOPEN_WT); | |
450 | if (config.map_file == (FILE *) NULL) | |
451 | { | |
452 | bfd_set_error (bfd_error_system_call); | |
453 | einfo (_("%P%F: cannot open map file %s: %E\n"), | |
454 | config.map_filename); | |
455 | } | |
456 | } | |
457 | } | |
458 | ||
252b5132 RH |
459 | lang_process (); |
460 | ||
461 | /* Print error messages for any missing symbols, for any warning | |
6d5e62f8 | 462 | symbols, and possibly multiple definitions. */ |
1049f94e | 463 | if (link_info.relocatable) |
252b5132 RH |
464 | output_bfd->flags &= ~EXEC_P; |
465 | else | |
466 | output_bfd->flags |= EXEC_P; | |
467 | ||
468 | ldwrite (); | |
469 | ||
470 | if (config.map_file != NULL) | |
471 | lang_map (); | |
472 | if (command_line.cref) | |
473 | output_cref (config.map_file != NULL ? config.map_file : stdout); | |
474 | if (nocrossref_list != NULL) | |
475 | check_nocrossrefs (); | |
476 | ||
750877ba L |
477 | lang_finish (); |
478 | ||
1049f94e | 479 | /* Even if we're producing relocatable output, some non-fatal errors should |
252b5132 | 480 | be reported in the exit status. (What non-fatal errors, if any, do we |
1049f94e | 481 | want to ignore for relocatable output?) */ |
b34976b6 | 482 | if (!config.make_executable && !force_make_executable) |
252b5132 | 483 | { |
b34976b6 | 484 | if (trace_files) |
0125cdf2 NC |
485 | einfo (_("%P: link errors found, deleting executable `%s'\n"), |
486 | output_filename); | |
252b5132 RH |
487 | |
488 | /* The file will be removed by remove_output. */ | |
252b5132 RH |
489 | xexit (1); |
490 | } | |
491 | else | |
492 | { | |
493 | if (! bfd_close (output_bfd)) | |
494 | einfo (_("%F%B: final close failed: %E\n"), output_bfd); | |
495 | ||
496 | /* If the --force-exe-suffix is enabled, and we're making an | |
6d5e62f8 KH |
497 | executable file and it doesn't end in .exe, copy it to one |
498 | which does. */ | |
1049f94e | 499 | if (! link_info.relocatable && command_line.force_exe_suffix) |
252b5132 RH |
500 | { |
501 | int len = strlen (output_filename); | |
0125cdf2 | 502 | |
6d5e62f8 | 503 | if (len < 4 |
252b5132 RH |
504 | || (strcasecmp (output_filename + len - 4, ".exe") != 0 |
505 | && strcasecmp (output_filename + len - 4, ".dll") != 0)) | |
506 | { | |
507 | FILE *src; | |
508 | FILE *dst; | |
509 | const int bsize = 4096; | |
510 | char *buf = xmalloc (bsize); | |
511 | int l; | |
512 | char *dst_name = xmalloc (len + 5); | |
0125cdf2 | 513 | |
252b5132 RH |
514 | strcpy (dst_name, output_filename); |
515 | strcat (dst_name, ".exe"); | |
516 | src = fopen (output_filename, FOPEN_RB); | |
517 | dst = fopen (dst_name, FOPEN_WB); | |
518 | ||
519 | if (!src) | |
1579bae1 AM |
520 | einfo (_("%X%P: unable to open for source of copy `%s'\n"), |
521 | output_filename); | |
252b5132 | 522 | if (!dst) |
1579bae1 AM |
523 | einfo (_("%X%P: unable to open for destination of copy `%s'\n"), |
524 | dst_name); | |
252b5132 RH |
525 | while ((l = fread (buf, 1, bsize, src)) > 0) |
526 | { | |
527 | int done = fwrite (buf, 1, l, dst); | |
0125cdf2 | 528 | |
252b5132 | 529 | if (done != l) |
0125cdf2 | 530 | einfo (_("%P: Error writing file `%s'\n"), dst_name); |
252b5132 | 531 | } |
0125cdf2 | 532 | |
252b5132 RH |
533 | fclose (src); |
534 | if (fclose (dst) == EOF) | |
0125cdf2 | 535 | einfo (_("%P: Error closing file `%s'\n"), dst_name); |
252b5132 RH |
536 | free (dst_name); |
537 | free (buf); | |
538 | } | |
539 | } | |
540 | } | |
541 | ||
542 | END_PROGRESS (program_name); | |
543 | ||
544 | if (config.stats) | |
545 | { | |
546 | #ifdef HAVE_SBRK | |
1579bae1 | 547 | char *lim = sbrk (0); |
252b5132 RH |
548 | #endif |
549 | long run_time = get_run_time () - start_time; | |
550 | ||
551 | fprintf (stderr, _("%s: total time in link: %ld.%06ld\n"), | |
552 | program_name, run_time / 1000000, run_time % 1000000); | |
553 | #ifdef HAVE_SBRK | |
554 | fprintf (stderr, _("%s: data size %ld\n"), program_name, | |
555 | (long) (lim - (char *) &environ)); | |
556 | #endif | |
557 | } | |
558 | ||
559 | /* Prevent remove_output from doing anything, after a successful link. */ | |
560 | output_filename = NULL; | |
561 | ||
562 | xexit (0); | |
563 | return 0; | |
564 | } | |
565 | ||
e2243057 RS |
566 | /* If the configured sysroot is relocatable, try relocating it based on |
567 | default prefix FROM. Return the relocated directory if it exists, | |
568 | otherwise return null. */ | |
569 | ||
570 | static char * | |
571 | get_relative_sysroot (const char *from ATTRIBUTE_UNUSED) | |
572 | { | |
573 | #ifdef TARGET_SYSTEM_ROOT_RELOCATABLE | |
574 | char *path; | |
575 | struct stat s; | |
576 | ||
577 | path = make_relative_prefix (program_name, from, TARGET_SYSTEM_ROOT); | |
578 | if (path) | |
579 | { | |
580 | if (stat (path, &s) == 0 && S_ISDIR (s.st_mode)) | |
581 | return path; | |
582 | free (path); | |
583 | } | |
584 | #endif | |
585 | return 0; | |
586 | } | |
587 | ||
588 | /* Return the sysroot directory. Return "" if no sysroot is being used. */ | |
589 | ||
590 | static const char * | |
591 | get_sysroot (int argc, char **argv) | |
592 | { | |
593 | int i; | |
594 | const char *path; | |
595 | ||
596 | for (i = 1; i < argc; i++) | |
0112cd26 | 597 | if (CONST_STRNEQ (argv[i], "--sysroot=")) |
e2243057 RS |
598 | return argv[i] + strlen ("--sysroot="); |
599 | ||
600 | path = get_relative_sysroot (BINDIR); | |
601 | if (path) | |
602 | return path; | |
603 | ||
604 | path = get_relative_sysroot (TOOLBINDIR); | |
605 | if (path) | |
606 | return path; | |
607 | ||
608 | return TARGET_SYSTEM_ROOT; | |
609 | } | |
610 | ||
252b5132 RH |
611 | /* We need to find any explicitly given emulation in order to initialize the |
612 | state that's needed by the lex&yacc argument parser (parse_args). */ | |
613 | ||
614 | static char * | |
1579bae1 | 615 | get_emulation (int argc, char **argv) |
252b5132 RH |
616 | { |
617 | char *emulation; | |
618 | int i; | |
619 | ||
620 | emulation = getenv (EMULATION_ENVIRON); | |
621 | if (emulation == NULL) | |
622 | emulation = DEFAULT_EMULATION; | |
623 | ||
624 | for (i = 1; i < argc; i++) | |
625 | { | |
0112cd26 | 626 | if (CONST_STRNEQ (argv[i], "-m")) |
252b5132 RH |
627 | { |
628 | if (argv[i][2] == '\0') | |
629 | { | |
630 | /* -m EMUL */ | |
631 | if (i < argc - 1) | |
632 | { | |
633 | emulation = argv[i + 1]; | |
634 | i++; | |
635 | } | |
636 | else | |
0125cdf2 | 637 | einfo (_("%P%F: missing argument to -m\n")); |
252b5132 RH |
638 | } |
639 | else if (strcmp (argv[i], "-mips1") == 0 | |
640 | || strcmp (argv[i], "-mips2") == 0 | |
641 | || strcmp (argv[i], "-mips3") == 0 | |
d1cf510e | 642 | || strcmp (argv[i], "-mips4") == 0 |
6f33421c CD |
643 | || strcmp (argv[i], "-mips5") == 0 |
644 | || strcmp (argv[i], "-mips32") == 0 | |
645 | || strcmp (argv[i], "-mips32r2") == 0 | |
5f74bc13 CD |
646 | || strcmp (argv[i], "-mips64") == 0 |
647 | || strcmp (argv[i], "-mips64r2") == 0) | |
252b5132 | 648 | { |
31d677f9 | 649 | /* FIXME: The arguments -mips1, -mips2, -mips3, etc. are |
252b5132 RH |
650 | passed to the linker by some MIPS compilers. They |
651 | generally tell the linker to use a slightly different | |
652 | library path. Perhaps someday these should be | |
653 | implemented as emulations; until then, we just ignore | |
654 | the arguments and hope that nobody ever creates | |
655 | emulations named ips1, ips2 or ips3. */ | |
656 | } | |
657 | else if (strcmp (argv[i], "-m486") == 0) | |
658 | { | |
659 | /* FIXME: The argument -m486 is passed to the linker on | |
660 | some Linux systems. Hope that nobody creates an | |
661 | emulation named 486. */ | |
662 | } | |
663 | else | |
664 | { | |
665 | /* -mEMUL */ | |
666 | emulation = &argv[i][2]; | |
667 | } | |
668 | } | |
669 | } | |
670 | ||
671 | return emulation; | |
672 | } | |
673 | ||
674 | /* If directory DIR contains an "ldscripts" subdirectory, | |
b34976b6 AM |
675 | add DIR to the library search path and return TRUE, |
676 | else return FALSE. */ | |
252b5132 | 677 | |
b34976b6 | 678 | static bfd_boolean |
1579bae1 | 679 | check_for_scripts_dir (char *dir) |
252b5132 RH |
680 | { |
681 | size_t dirlen; | |
682 | char *buf; | |
683 | struct stat s; | |
b34976b6 | 684 | bfd_boolean res; |
252b5132 RH |
685 | |
686 | dirlen = strlen (dir); | |
687 | /* sizeof counts the terminating NUL. */ | |
1579bae1 | 688 | buf = xmalloc (dirlen + sizeof ("/ldscripts")); |
252b5132 RH |
689 | sprintf (buf, "%s/ldscripts", dir); |
690 | ||
691 | res = stat (buf, &s) == 0 && S_ISDIR (s.st_mode); | |
692 | free (buf); | |
693 | if (res) | |
b34976b6 | 694 | ldfile_add_library_path (dir, FALSE); |
252b5132 RH |
695 | return res; |
696 | } | |
697 | ||
698 | /* Set the default directory for finding script files. | |
699 | Libraries will be searched for here too, but that's ok. | |
700 | We look for the "ldscripts" directory in: | |
701 | ||
cdc0d45e DJ |
702 | SCRIPTDIR (passed from Makefile) |
703 | (adjusted according to the current location of the binary) | |
252b5132 RH |
704 | SCRIPTDIR (passed from Makefile) |
705 | the dir where this program is (for using it from the build tree) | |
cdc0d45e | 706 | the dir where this program is/../lib |
0125cdf2 | 707 | (for installing the tool suite elsewhere). */ |
252b5132 RH |
708 | |
709 | static void | |
1579bae1 | 710 | set_scripts_dir (void) |
252b5132 RH |
711 | { |
712 | char *end, *dir; | |
713 | size_t dirlen; | |
5ed6aba4 | 714 | bfd_boolean found; |
252b5132 | 715 | |
cdc0d45e | 716 | dir = make_relative_prefix (program_name, BINDIR, SCRIPTDIR); |
cdc0d45e | 717 | if (dir) |
5ed6aba4 NC |
718 | { |
719 | found = check_for_scripts_dir (dir); | |
720 | free (dir); | |
721 | if (found) | |
722 | return; | |
723 | } | |
cdc0d45e | 724 | |
4ca1b790 | 725 | dir = make_relative_prefix (program_name, TOOLBINDIR, SCRIPTDIR); |
4ca1b790 | 726 | if (dir) |
5ed6aba4 NC |
727 | { |
728 | found = check_for_scripts_dir (dir); | |
729 | free (dir); | |
730 | if (found) | |
731 | return; | |
732 | } | |
4ca1b790 | 733 | |
252b5132 | 734 | if (check_for_scripts_dir (SCRIPTDIR)) |
6d5e62f8 KH |
735 | /* We've been installed normally. */ |
736 | return; | |
252b5132 RH |
737 | |
738 | /* Look for "ldscripts" in the dir where our binary is. */ | |
739 | end = strrchr (program_name, '/'); | |
5af11cab AM |
740 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
741 | { | |
742 | /* We could have \foo\bar, or /foo\bar. */ | |
743 | char *bslash = strrchr (program_name, '\\'); | |
0125cdf2 | 744 | |
2ab47eed | 745 | if (end == NULL || (bslash != NULL && bslash > end)) |
5af11cab AM |
746 | end = bslash; |
747 | } | |
748 | #endif | |
252b5132 RH |
749 | |
750 | if (end == NULL) | |
0125cdf2 NC |
751 | /* Don't look for ldscripts in the current directory. There is |
752 | too much potential for confusion. */ | |
753 | return; | |
252b5132 RH |
754 | |
755 | dirlen = end - program_name; | |
756 | /* Make a copy of program_name in dir. | |
757 | Leave room for later "/../lib". */ | |
1579bae1 | 758 | dir = xmalloc (dirlen + 8); |
252b5132 RH |
759 | strncpy (dir, program_name, dirlen); |
760 | dir[dirlen] = '\0'; | |
761 | ||
762 | if (check_for_scripts_dir (dir)) | |
5ed6aba4 NC |
763 | { |
764 | free (dir); | |
765 | return; | |
766 | } | |
252b5132 RH |
767 | |
768 | /* Look for "ldscripts" in <the dir where our binary is>/../lib. */ | |
769 | strcpy (dir + dirlen, "/../lib"); | |
5ed6aba4 | 770 | check_for_scripts_dir (dir); |
6d5e62f8 | 771 | free (dir); |
252b5132 RH |
772 | } |
773 | ||
774 | void | |
1579bae1 | 775 | add_ysym (const char *name) |
252b5132 | 776 | { |
1579bae1 | 777 | if (link_info.notice_hash == NULL) |
252b5132 | 778 | { |
1579bae1 | 779 | link_info.notice_hash = xmalloc (sizeof (struct bfd_hash_table)); |
66eb6687 AM |
780 | if (!bfd_hash_table_init_n (link_info.notice_hash, |
781 | bfd_hash_newfunc, | |
782 | sizeof (struct bfd_hash_entry), | |
783 | 61)) | |
252b5132 | 784 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); |
6d5e62f8 | 785 | } |
252b5132 | 786 | |
1579bae1 | 787 | if (bfd_hash_lookup (link_info.notice_hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
788 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); |
789 | } | |
790 | ||
791 | /* Record a symbol to be wrapped, from the --wrap option. */ | |
792 | ||
793 | void | |
1579bae1 | 794 | add_wrap (const char *name) |
252b5132 RH |
795 | { |
796 | if (link_info.wrap_hash == NULL) | |
797 | { | |
1579bae1 | 798 | link_info.wrap_hash = xmalloc (sizeof (struct bfd_hash_table)); |
66eb6687 AM |
799 | if (!bfd_hash_table_init_n (link_info.wrap_hash, |
800 | bfd_hash_newfunc, | |
801 | sizeof (struct bfd_hash_entry), | |
802 | 61)) | |
252b5132 RH |
803 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); |
804 | } | |
0125cdf2 | 805 | |
b34976b6 | 806 | if (bfd_hash_lookup (link_info.wrap_hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
807 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); |
808 | } | |
809 | ||
810 | /* Handle the -retain-symbols-file option. */ | |
811 | ||
812 | void | |
1579bae1 | 813 | add_keepsyms_file (const char *filename) |
252b5132 RH |
814 | { |
815 | FILE *file; | |
816 | char *buf; | |
817 | size_t bufsize; | |
818 | int c; | |
819 | ||
820 | if (link_info.strip == strip_some) | |
821 | einfo (_("%X%P: error: duplicate retain-symbols-file\n")); | |
822 | ||
823 | file = fopen (filename, "r"); | |
1579bae1 | 824 | if (file == NULL) |
252b5132 RH |
825 | { |
826 | bfd_set_error (bfd_error_system_call); | |
827 | einfo ("%X%P: %s: %E\n", filename); | |
828 | return; | |
829 | } | |
830 | ||
1579bae1 | 831 | link_info.keep_hash = xmalloc (sizeof (struct bfd_hash_table)); |
66eb6687 AM |
832 | if (!bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc, |
833 | sizeof (struct bfd_hash_entry))) | |
252b5132 RH |
834 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); |
835 | ||
836 | bufsize = 100; | |
1579bae1 | 837 | buf = xmalloc (bufsize); |
252b5132 RH |
838 | |
839 | c = getc (file); | |
840 | while (c != EOF) | |
841 | { | |
3882b010 | 842 | while (ISSPACE (c)) |
252b5132 RH |
843 | c = getc (file); |
844 | ||
845 | if (c != EOF) | |
846 | { | |
847 | size_t len = 0; | |
848 | ||
3882b010 | 849 | while (! ISSPACE (c) && c != EOF) |
252b5132 RH |
850 | { |
851 | buf[len] = c; | |
852 | ++len; | |
853 | if (len >= bufsize) | |
854 | { | |
855 | bufsize *= 2; | |
856 | buf = xrealloc (buf, bufsize); | |
857 | } | |
858 | c = getc (file); | |
859 | } | |
860 | ||
861 | buf[len] = '\0'; | |
862 | ||
1579bae1 | 863 | if (bfd_hash_lookup (link_info.keep_hash, buf, TRUE, TRUE) == NULL) |
252b5132 RH |
864 | einfo (_("%P%F: bfd_hash_lookup for insertion failed: %E\n")); |
865 | } | |
866 | } | |
867 | ||
868 | if (link_info.strip != strip_none) | |
869 | einfo (_("%P: `-retain-symbols-file' overrides `-s' and `-S'\n")); | |
870 | ||
5ed6aba4 | 871 | free (buf); |
252b5132 RH |
872 | link_info.strip = strip_some; |
873 | } | |
874 | \f | |
875 | /* Callbacks from the BFD linker routines. */ | |
876 | ||
877 | /* This is called when BFD has decided to include an archive member in | |
878 | a link. */ | |
879 | ||
b34976b6 | 880 | static bfd_boolean |
e1fffbe6 | 881 | add_archive_element (struct bfd_link_info *info, |
1579bae1 AM |
882 | bfd *abfd, |
883 | const char *name) | |
252b5132 RH |
884 | { |
885 | lang_input_statement_type *input; | |
886 | ||
1579bae1 | 887 | input = xmalloc (sizeof (lang_input_statement_type)); |
252b5132 RH |
888 | input->filename = abfd->filename; |
889 | input->local_sym_name = abfd->filename; | |
890 | input->the_bfd = abfd; | |
891 | input->asymbols = NULL; | |
892 | input->next = NULL; | |
b34976b6 AM |
893 | input->just_syms_flag = FALSE; |
894 | input->loaded = FALSE; | |
895 | input->search_dirs_flag = FALSE; | |
252b5132 RH |
896 | |
897 | /* FIXME: The following fields are not set: header.next, | |
898 | header.type, closed, passive_position, symbol_count, | |
899 | next_real_file, is_archive, target, real. This bit of code is | |
900 | from the old decode_library_subfile function. I don't know | |
901 | whether any of those fields matters. */ | |
902 | ||
903 | ldlang_add_file (input); | |
904 | ||
1579bae1 | 905 | if (config.map_file != NULL) |
252b5132 | 906 | { |
b34976b6 | 907 | static bfd_boolean header_printed; |
252b5132 RH |
908 | struct bfd_link_hash_entry *h; |
909 | bfd *from; | |
910 | int len; | |
911 | ||
e1fffbe6 | 912 | h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); |
252b5132 RH |
913 | |
914 | if (h == NULL) | |
915 | from = NULL; | |
916 | else | |
917 | { | |
918 | switch (h->type) | |
919 | { | |
920 | default: | |
921 | from = NULL; | |
922 | break; | |
923 | ||
924 | case bfd_link_hash_defined: | |
925 | case bfd_link_hash_defweak: | |
926 | from = h->u.def.section->owner; | |
927 | break; | |
928 | ||
929 | case bfd_link_hash_undefined: | |
930 | case bfd_link_hash_undefweak: | |
931 | from = h->u.undef.abfd; | |
932 | break; | |
933 | ||
934 | case bfd_link_hash_common: | |
935 | from = h->u.c.p->section->owner; | |
936 | break; | |
937 | } | |
938 | } | |
939 | ||
940 | if (! header_printed) | |
941 | { | |
942 | char buf[100]; | |
943 | ||
e3c8793a | 944 | sprintf (buf, _("Archive member included because of file (symbol)\n\n")); |
252b5132 | 945 | minfo ("%s", buf); |
b34976b6 | 946 | header_printed = TRUE; |
252b5132 RH |
947 | } |
948 | ||
949 | if (bfd_my_archive (abfd) == NULL) | |
950 | { | |
951 | minfo ("%s", bfd_get_filename (abfd)); | |
952 | len = strlen (bfd_get_filename (abfd)); | |
953 | } | |
954 | else | |
955 | { | |
956 | minfo ("%s(%s)", bfd_get_filename (bfd_my_archive (abfd)), | |
957 | bfd_get_filename (abfd)); | |
958 | len = (strlen (bfd_get_filename (bfd_my_archive (abfd))) | |
959 | + strlen (bfd_get_filename (abfd)) | |
960 | + 2); | |
961 | } | |
962 | ||
963 | if (len >= 29) | |
964 | { | |
965 | print_nl (); | |
966 | len = 0; | |
967 | } | |
968 | while (len < 30) | |
969 | { | |
970 | print_space (); | |
971 | ++len; | |
972 | } | |
973 | ||
974 | if (from != NULL) | |
975 | minfo ("%B ", from); | |
976 | if (h != NULL) | |
977 | minfo ("(%T)\n", h->root.string); | |
978 | else | |
979 | minfo ("(%s)\n", name); | |
980 | } | |
981 | ||
982 | if (trace_files || trace_file_tries) | |
983 | info_msg ("%I\n", input); | |
984 | ||
b34976b6 | 985 | return TRUE; |
252b5132 RH |
986 | } |
987 | ||
988 | /* This is called when BFD has discovered a symbol which is defined | |
989 | multiple times. */ | |
990 | ||
b34976b6 | 991 | static bfd_boolean |
1579bae1 AM |
992 | multiple_definition (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
993 | const char *name, | |
994 | bfd *obfd, | |
995 | asection *osec, | |
996 | bfd_vma oval, | |
997 | bfd *nbfd, | |
998 | asection *nsec, | |
999 | bfd_vma nval) | |
252b5132 RH |
1000 | { |
1001 | /* If either section has the output_section field set to | |
1002 | bfd_abs_section_ptr, it means that the section is being | |
1003 | discarded, and this is not really a multiple definition at all. | |
1004 | FIXME: It would be cleaner to somehow ignore symbols defined in | |
1005 | sections which are being discarded. */ | |
1006 | if ((osec->output_section != NULL | |
1007 | && ! bfd_is_abs_section (osec) | |
1008 | && bfd_is_abs_section (osec->output_section)) | |
1009 | || (nsec->output_section != NULL | |
1010 | && ! bfd_is_abs_section (nsec) | |
1011 | && bfd_is_abs_section (nsec->output_section))) | |
b34976b6 | 1012 | return TRUE; |
252b5132 RH |
1013 | |
1014 | einfo (_("%X%C: multiple definition of `%T'\n"), | |
1015 | nbfd, nsec, nval, name); | |
1579bae1 | 1016 | if (obfd != NULL) |
252b5132 | 1017 | einfo (_("%D: first defined here\n"), obfd, osec, oval); |
9b14b192 NC |
1018 | |
1019 | if (command_line.relax) | |
1020 | { | |
1021 | einfo (_("%P: Disabling relaxation: it will not work with multiple definitions\n")); | |
1022 | command_line.relax = 0; | |
1023 | } | |
6d5e62f8 | 1024 | |
b34976b6 | 1025 | return TRUE; |
252b5132 RH |
1026 | } |
1027 | ||
1028 | /* This is called when there is a definition of a common symbol, or | |
1029 | when a common symbol is found for a symbol that is already defined, | |
1030 | or when two common symbols are found. We only do something if | |
1031 | -warn-common was used. */ | |
1032 | ||
b34976b6 | 1033 | static bfd_boolean |
1579bae1 AM |
1034 | multiple_common (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1035 | const char *name, | |
1036 | bfd *obfd, | |
1037 | enum bfd_link_hash_type otype, | |
1038 | bfd_vma osize, | |
1039 | bfd *nbfd, | |
1040 | enum bfd_link_hash_type ntype, | |
1041 | bfd_vma nsize) | |
252b5132 RH |
1042 | { |
1043 | if (! config.warn_common) | |
b34976b6 | 1044 | return TRUE; |
252b5132 RH |
1045 | |
1046 | if (ntype == bfd_link_hash_defined | |
1047 | || ntype == bfd_link_hash_defweak | |
1048 | || ntype == bfd_link_hash_indirect) | |
1049 | { | |
1050 | ASSERT (otype == bfd_link_hash_common); | |
1051 | einfo (_("%B: warning: definition of `%T' overriding common\n"), | |
1052 | nbfd, name); | |
1053 | if (obfd != NULL) | |
1054 | einfo (_("%B: warning: common is here\n"), obfd); | |
1055 | } | |
1056 | else if (otype == bfd_link_hash_defined | |
1057 | || otype == bfd_link_hash_defweak | |
1058 | || otype == bfd_link_hash_indirect) | |
1059 | { | |
1060 | ASSERT (ntype == bfd_link_hash_common); | |
1061 | einfo (_("%B: warning: common of `%T' overridden by definition\n"), | |
1062 | nbfd, name); | |
1063 | if (obfd != NULL) | |
1064 | einfo (_("%B: warning: defined here\n"), obfd); | |
1065 | } | |
1066 | else | |
1067 | { | |
1068 | ASSERT (otype == bfd_link_hash_common && ntype == bfd_link_hash_common); | |
1069 | if (osize > nsize) | |
1070 | { | |
1071 | einfo (_("%B: warning: common of `%T' overridden by larger common\n"), | |
1072 | nbfd, name); | |
1073 | if (obfd != NULL) | |
1074 | einfo (_("%B: warning: larger common is here\n"), obfd); | |
1075 | } | |
1076 | else if (nsize > osize) | |
1077 | { | |
1078 | einfo (_("%B: warning: common of `%T' overriding smaller common\n"), | |
1079 | nbfd, name); | |
1080 | if (obfd != NULL) | |
1081 | einfo (_("%B: warning: smaller common is here\n"), obfd); | |
1082 | } | |
1083 | else | |
1084 | { | |
1085 | einfo (_("%B: warning: multiple common of `%T'\n"), nbfd, name); | |
1086 | if (obfd != NULL) | |
1087 | einfo (_("%B: warning: previous common is here\n"), obfd); | |
1088 | } | |
1089 | } | |
1090 | ||
b34976b6 | 1091 | return TRUE; |
252b5132 RH |
1092 | } |
1093 | ||
1094 | /* This is called when BFD has discovered a set element. H is the | |
1095 | entry in the linker hash table for the set. SECTION and VALUE | |
1096 | represent a value which should be added to the set. */ | |
1097 | ||
b34976b6 | 1098 | static bfd_boolean |
1579bae1 AM |
1099 | add_to_set (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1100 | struct bfd_link_hash_entry *h, | |
1101 | bfd_reloc_code_real_type reloc, | |
1102 | bfd *abfd, | |
1103 | asection *section, | |
1104 | bfd_vma value) | |
252b5132 RH |
1105 | { |
1106 | if (config.warn_constructors) | |
1107 | einfo (_("%P: warning: global constructor %s used\n"), | |
1108 | h->root.string); | |
1109 | ||
1110 | if (! config.build_constructors) | |
b34976b6 | 1111 | return TRUE; |
252b5132 | 1112 | |
1579bae1 | 1113 | ldctor_add_set_entry (h, reloc, NULL, section, value); |
252b5132 RH |
1114 | |
1115 | if (h->type == bfd_link_hash_new) | |
1116 | { | |
1117 | h->type = bfd_link_hash_undefined; | |
1118 | h->u.undef.abfd = abfd; | |
1119 | /* We don't call bfd_link_add_undef to add this to the list of | |
1120 | undefined symbols because we are going to define it | |
1121 | ourselves. */ | |
1122 | } | |
1123 | ||
b34976b6 | 1124 | return TRUE; |
252b5132 RH |
1125 | } |
1126 | ||
1127 | /* This is called when BFD has discovered a constructor. This is only | |
1128 | called for some object file formats--those which do not handle | |
1129 | constructors in some more clever fashion. This is similar to | |
1130 | adding an element to a set, but less general. */ | |
1131 | ||
b34976b6 | 1132 | static bfd_boolean |
1579bae1 AM |
1133 | constructor_callback (struct bfd_link_info *info, |
1134 | bfd_boolean constructor, | |
1135 | const char *name, | |
1136 | bfd *abfd, | |
1137 | asection *section, | |
1138 | bfd_vma value) | |
252b5132 RH |
1139 | { |
1140 | char *s; | |
1141 | struct bfd_link_hash_entry *h; | |
1142 | char set_name[1 + sizeof "__CTOR_LIST__"]; | |
1143 | ||
1144 | if (config.warn_constructors) | |
1145 | einfo (_("%P: warning: global constructor %s used\n"), name); | |
1146 | ||
1147 | if (! config.build_constructors) | |
b34976b6 | 1148 | return TRUE; |
252b5132 RH |
1149 | |
1150 | /* Ensure that BFD_RELOC_CTOR exists now, so that we can give a | |
1151 | useful error message. */ | |
1152 | if (bfd_reloc_type_lookup (output_bfd, BFD_RELOC_CTOR) == NULL | |
e1fffbe6 | 1153 | && (info->relocatable |
252b5132 RH |
1154 | || bfd_reloc_type_lookup (abfd, BFD_RELOC_CTOR) == NULL)) |
1155 | einfo (_("%P%F: BFD backend error: BFD_RELOC_CTOR unsupported\n")); | |
1156 | ||
1157 | s = set_name; | |
1158 | if (bfd_get_symbol_leading_char (abfd) != '\0') | |
1159 | *s++ = bfd_get_symbol_leading_char (abfd); | |
1160 | if (constructor) | |
1161 | strcpy (s, "__CTOR_LIST__"); | |
1162 | else | |
1163 | strcpy (s, "__DTOR_LIST__"); | |
1164 | ||
b34976b6 | 1165 | h = bfd_link_hash_lookup (info->hash, set_name, TRUE, TRUE, TRUE); |
252b5132 RH |
1166 | if (h == (struct bfd_link_hash_entry *) NULL) |
1167 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); | |
1168 | if (h->type == bfd_link_hash_new) | |
1169 | { | |
1170 | h->type = bfd_link_hash_undefined; | |
1171 | h->u.undef.abfd = abfd; | |
1172 | /* We don't call bfd_link_add_undef to add this to the list of | |
1173 | undefined symbols because we are going to define it | |
1174 | ourselves. */ | |
1175 | } | |
1176 | ||
1177 | ldctor_add_set_entry (h, BFD_RELOC_CTOR, name, section, value); | |
b34976b6 | 1178 | return TRUE; |
252b5132 RH |
1179 | } |
1180 | ||
1181 | /* A structure used by warning_callback to pass information through | |
1182 | bfd_map_over_sections. */ | |
1183 | ||
0125cdf2 NC |
1184 | struct warning_callback_info |
1185 | { | |
b34976b6 | 1186 | bfd_boolean found; |
252b5132 RH |
1187 | const char *warning; |
1188 | const char *symbol; | |
1189 | asymbol **asymbols; | |
1190 | }; | |
1191 | ||
1192 | /* This is called when there is a reference to a warning symbol. */ | |
1193 | ||
b34976b6 | 1194 | static bfd_boolean |
1579bae1 AM |
1195 | warning_callback (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1196 | const char *warning, | |
1197 | const char *symbol, | |
1198 | bfd *abfd, | |
1199 | asection *section, | |
1200 | bfd_vma address) | |
252b5132 RH |
1201 | { |
1202 | /* This is a hack to support warn_multiple_gp. FIXME: This should | |
1203 | have a cleaner interface, but what? */ | |
1204 | if (! config.warn_multiple_gp | |
1205 | && strcmp (warning, "using multiple gp values") == 0) | |
b34976b6 | 1206 | return TRUE; |
252b5132 RH |
1207 | |
1208 | if (section != NULL) | |
300475fe | 1209 | einfo ("%C: %s%s\n", abfd, section, address, _("warning: "), warning); |
252b5132 | 1210 | else if (abfd == NULL) |
300475fe | 1211 | einfo ("%P: %s%s\n", _("warning: "), warning); |
252b5132 | 1212 | else if (symbol == NULL) |
300475fe | 1213 | einfo ("%B: %s%s\n", abfd, _("warning: "), warning); |
252b5132 RH |
1214 | else |
1215 | { | |
1216 | lang_input_statement_type *entry; | |
1217 | asymbol **asymbols; | |
1218 | struct warning_callback_info info; | |
1219 | ||
1220 | /* Look through the relocs to see if we can find a plausible | |
1221 | address. */ | |
252b5132 RH |
1222 | entry = (lang_input_statement_type *) abfd->usrdata; |
1223 | if (entry != NULL && entry->asymbols != NULL) | |
1224 | asymbols = entry->asymbols; | |
1225 | else | |
1226 | { | |
1227 | long symsize; | |
1228 | long symbol_count; | |
1229 | ||
1230 | symsize = bfd_get_symtab_upper_bound (abfd); | |
1231 | if (symsize < 0) | |
1232 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
1579bae1 | 1233 | asymbols = xmalloc (symsize); |
252b5132 RH |
1234 | symbol_count = bfd_canonicalize_symtab (abfd, asymbols); |
1235 | if (symbol_count < 0) | |
1236 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
1237 | if (entry != NULL) | |
1238 | { | |
1239 | entry->asymbols = asymbols; | |
1240 | entry->symbol_count = symbol_count; | |
1241 | } | |
1242 | } | |
1243 | ||
b34976b6 | 1244 | info.found = FALSE; |
252b5132 RH |
1245 | info.warning = warning; |
1246 | info.symbol = symbol; | |
1247 | info.asymbols = asymbols; | |
1579bae1 | 1248 | bfd_map_over_sections (abfd, warning_find_reloc, &info); |
252b5132 RH |
1249 | |
1250 | if (! info.found) | |
300475fe | 1251 | einfo ("%B: %s%s\n", abfd, _("warning: "), warning); |
252b5132 RH |
1252 | |
1253 | if (entry == NULL) | |
1254 | free (asymbols); | |
1255 | } | |
1256 | ||
b34976b6 | 1257 | return TRUE; |
252b5132 RH |
1258 | } |
1259 | ||
1260 | /* This is called by warning_callback for each section. It checks the | |
1261 | relocs of the section to see if it can find a reference to the | |
1262 | symbol which triggered the warning. If it can, it uses the reloc | |
1263 | to give an error message with a file and line number. */ | |
1264 | ||
1265 | static void | |
1579bae1 | 1266 | warning_find_reloc (bfd *abfd, asection *sec, void *iarg) |
252b5132 | 1267 | { |
1579bae1 | 1268 | struct warning_callback_info *info = iarg; |
252b5132 RH |
1269 | long relsize; |
1270 | arelent **relpp; | |
1271 | long relcount; | |
1272 | arelent **p, **pend; | |
1273 | ||
1274 | if (info->found) | |
1275 | return; | |
1276 | ||
1277 | relsize = bfd_get_reloc_upper_bound (abfd, sec); | |
1278 | if (relsize < 0) | |
1279 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1280 | if (relsize == 0) | |
1281 | return; | |
1282 | ||
1579bae1 | 1283 | relpp = xmalloc (relsize); |
252b5132 RH |
1284 | relcount = bfd_canonicalize_reloc (abfd, sec, relpp, info->asymbols); |
1285 | if (relcount < 0) | |
1286 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1287 | ||
1288 | p = relpp; | |
1289 | pend = p + relcount; | |
1290 | for (; p < pend && *p != NULL; p++) | |
1291 | { | |
1292 | arelent *q = *p; | |
1293 | ||
1294 | if (q->sym_ptr_ptr != NULL | |
1295 | && *q->sym_ptr_ptr != NULL | |
1296 | && strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), info->symbol) == 0) | |
1297 | { | |
1298 | /* We found a reloc for the symbol we are looking for. */ | |
300475fe HPN |
1299 | einfo ("%C: %s%s\n", abfd, sec, q->address, _("warning: "), |
1300 | info->warning); | |
b34976b6 | 1301 | info->found = TRUE; |
252b5132 RH |
1302 | break; |
1303 | } | |
1304 | } | |
1305 | ||
1306 | free (relpp); | |
1307 | } | |
1308 | ||
1309 | /* This is called when an undefined symbol is found. */ | |
1310 | ||
b34976b6 | 1311 | static bfd_boolean |
1579bae1 AM |
1312 | undefined_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1313 | const char *name, | |
1314 | bfd *abfd, | |
1315 | asection *section, | |
1316 | bfd_vma address, | |
0b28295d | 1317 | bfd_boolean error) |
252b5132 RH |
1318 | { |
1319 | static char *error_name; | |
1320 | static unsigned int error_count; | |
1321 | ||
1322 | #define MAX_ERRORS_IN_A_ROW 5 | |
1323 | ||
1324 | if (config.warn_once) | |
1325 | { | |
1326 | static struct bfd_hash_table *hash; | |
1327 | ||
1328 | /* Only warn once about a particular undefined symbol. */ | |
252b5132 RH |
1329 | if (hash == NULL) |
1330 | { | |
1579bae1 | 1331 | hash = xmalloc (sizeof (struct bfd_hash_table)); |
66eb6687 AM |
1332 | if (!bfd_hash_table_init (hash, bfd_hash_newfunc, |
1333 | sizeof (struct bfd_hash_entry))) | |
252b5132 RH |
1334 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); |
1335 | } | |
1336 | ||
b34976b6 AM |
1337 | if (bfd_hash_lookup (hash, name, FALSE, FALSE) != NULL) |
1338 | return TRUE; | |
252b5132 | 1339 | |
b34976b6 | 1340 | if (bfd_hash_lookup (hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
1341 | einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); |
1342 | } | |
1343 | ||
1344 | /* We never print more than a reasonable number of errors in a row | |
1345 | for a single symbol. */ | |
1579bae1 | 1346 | if (error_name != NULL |
252b5132 RH |
1347 | && strcmp (name, error_name) == 0) |
1348 | ++error_count; | |
1349 | else | |
1350 | { | |
1351 | error_count = 0; | |
1579bae1 | 1352 | if (error_name != NULL) |
252b5132 | 1353 | free (error_name); |
d1b2b2dc | 1354 | error_name = xstrdup (name); |
252b5132 RH |
1355 | } |
1356 | ||
1357 | if (section != NULL) | |
1358 | { | |
1359 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1360 | { |
0b28295d ILT |
1361 | if (error) |
1362 | einfo (_("%X%C: undefined reference to `%T'\n"), | |
1363 | abfd, section, address, name); | |
1364 | else | |
1365 | einfo (_("%C: warning: undefined reference to `%T'\n"), | |
1366 | abfd, section, address, name); | |
b6f29aaa | 1367 | } |
252b5132 | 1368 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1369 | { |
1370 | if (error) | |
1371 | einfo (_("%X%D: more undefined references to `%T' follow\n"), | |
1372 | abfd, section, address, name); | |
1373 | else | |
1374 | einfo (_("%D: warning: more undefined references to `%T' follow\n"), | |
1375 | abfd, section, address, name); | |
1376 | } | |
1377 | else if (error) | |
1378 | einfo ("%X"); | |
252b5132 RH |
1379 | } |
1380 | else | |
1381 | { | |
1382 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1383 | { |
0b28295d ILT |
1384 | if (error) |
1385 | einfo (_("%X%B: undefined reference to `%T'\n"), | |
1386 | abfd, name); | |
1387 | else | |
1388 | einfo (_("%B: warning: undefined reference to `%T'\n"), | |
1389 | abfd, name); | |
b6f29aaa | 1390 | } |
252b5132 | 1391 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1392 | { |
1393 | if (error) | |
1394 | einfo (_("%X%B: more undefined references to `%T' follow\n"), | |
1395 | abfd, name); | |
1396 | else | |
1397 | einfo (_("%B: warning: more undefined references to `%T' follow\n"), | |
1398 | abfd, name); | |
1399 | } | |
1400 | else if (error) | |
1401 | einfo ("%X"); | |
252b5132 RH |
1402 | } |
1403 | ||
b34976b6 | 1404 | return TRUE; |
252b5132 RH |
1405 | } |
1406 | ||
8aae64e6 AO |
1407 | /* Counter to limit the number of relocation overflow error messages |
1408 | to print. Errors are printed as it is decremented. When it's | |
1409 | called and the counter is zero, a final message is printed | |
1410 | indicating more relocations were omitted. When it gets to -1, no | |
1411 | such errors are printed. If it's initially set to a value less | |
1412 | than -1, all such errors will be printed (--verbose does this). */ | |
1413 | ||
1414 | int overflow_cutoff_limit = 10; | |
1415 | ||
252b5132 RH |
1416 | /* This is called when a reloc overflows. */ |
1417 | ||
b34976b6 | 1418 | static bfd_boolean |
1579bae1 | 1419 | reloc_overflow (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
dfeffb9f | 1420 | struct bfd_link_hash_entry *entry, |
1579bae1 AM |
1421 | const char *name, |
1422 | const char *reloc_name, | |
1423 | bfd_vma addend, | |
1424 | bfd *abfd, | |
1425 | asection *section, | |
1426 | bfd_vma address) | |
252b5132 | 1427 | { |
8aae64e6 AO |
1428 | if (overflow_cutoff_limit == -1) |
1429 | return TRUE; | |
1430 | ||
e1fffbe6 | 1431 | einfo ("%X%C:", abfd, section, address); |
8aae64e6 AO |
1432 | |
1433 | if (overflow_cutoff_limit >= 0 | |
1434 | && overflow_cutoff_limit-- == 0) | |
1435 | { | |
1436 | einfo (_(" additional relocation overflows omitted from the output\n")); | |
1437 | return TRUE; | |
1438 | } | |
1439 | ||
dfeffb9f L |
1440 | if (entry) |
1441 | { | |
1442 | while (entry->type == bfd_link_hash_indirect | |
1443 | || entry->type == bfd_link_hash_warning) | |
1444 | entry = entry->u.i.link; | |
1445 | switch (entry->type) | |
1446 | { | |
1447 | case bfd_link_hash_undefined: | |
1448 | case bfd_link_hash_undefweak: | |
1449 | einfo (_(" relocation truncated to fit: %s against undefined symbol `%T'"), | |
1450 | reloc_name, entry->root.string); | |
1451 | break; | |
1452 | case bfd_link_hash_defined: | |
1453 | case bfd_link_hash_defweak: | |
1454 | einfo (_(" relocation truncated to fit: %s against symbol `%T' defined in %A section in %B"), | |
1455 | reloc_name, entry->root.string, | |
a6e1b90f L |
1456 | entry->u.def.section, |
1457 | entry->u.def.section == bfd_abs_section_ptr | |
1458 | ? output_bfd : entry->u.def.section->owner); | |
dfeffb9f L |
1459 | break; |
1460 | default: | |
1461 | abort (); | |
1462 | break; | |
1463 | } | |
1464 | } | |
1465 | else | |
1466 | einfo (_(" relocation truncated to fit: %s against `%T'"), | |
1467 | reloc_name, name); | |
252b5132 RH |
1468 | if (addend != 0) |
1469 | einfo ("+%v", addend); | |
1470 | einfo ("\n"); | |
b34976b6 | 1471 | return TRUE; |
252b5132 RH |
1472 | } |
1473 | ||
1474 | /* This is called when a dangerous relocation is made. */ | |
1475 | ||
b34976b6 | 1476 | static bfd_boolean |
1579bae1 AM |
1477 | reloc_dangerous (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1478 | const char *message, | |
1479 | bfd *abfd, | |
1480 | asection *section, | |
1481 | bfd_vma address) | |
252b5132 | 1482 | { |
e1fffbe6 AM |
1483 | einfo (_("%X%C: dangerous relocation: %s\n"), |
1484 | abfd, section, address, message); | |
b34976b6 | 1485 | return TRUE; |
252b5132 RH |
1486 | } |
1487 | ||
1488 | /* This is called when a reloc is being generated attached to a symbol | |
1489 | that is not being output. */ | |
1490 | ||
b34976b6 | 1491 | static bfd_boolean |
1579bae1 AM |
1492 | unattached_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1493 | const char *name, | |
1494 | bfd *abfd, | |
1495 | asection *section, | |
1496 | bfd_vma address) | |
252b5132 | 1497 | { |
e1fffbe6 AM |
1498 | einfo (_("%X%C: reloc refers to symbol `%T' which is not being output\n"), |
1499 | abfd, section, address, name); | |
b34976b6 | 1500 | return TRUE; |
252b5132 RH |
1501 | } |
1502 | ||
1503 | /* This is called if link_info.notice_all is set, or when a symbol in | |
1504 | link_info.notice_hash is found. Symbols are put in notice_hash | |
1505 | using the -y option. */ | |
1506 | ||
b34976b6 | 1507 | static bfd_boolean |
1579bae1 AM |
1508 | notice (struct bfd_link_info *info, |
1509 | const char *name, | |
1510 | bfd *abfd, | |
1511 | asection *section, | |
1512 | bfd_vma value) | |
252b5132 | 1513 | { |
5061a885 AM |
1514 | if (name == NULL) |
1515 | { | |
1516 | if (command_line.cref || nocrossref_list != NULL) | |
1517 | return handle_asneeded_cref (abfd, value); | |
1518 | return TRUE; | |
1519 | } | |
1520 | ||
252b5132 RH |
1521 | if (! info->notice_all |
1522 | || (info->notice_hash != NULL | |
b34976b6 | 1523 | && bfd_hash_lookup (info->notice_hash, name, FALSE, FALSE) != NULL)) |
252b5132 RH |
1524 | { |
1525 | if (bfd_is_und_section (section)) | |
1526 | einfo ("%B: reference to %s\n", abfd, name); | |
1527 | else | |
1528 | einfo ("%B: definition of %s\n", abfd, name); | |
1529 | } | |
1530 | ||
1531 | if (command_line.cref || nocrossref_list != NULL) | |
1532 | add_cref (name, abfd, section, value); | |
1533 | ||
b34976b6 | 1534 | return TRUE; |
252b5132 | 1535 | } |