Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Main program of GNU linker. |
4e5bae56 | 2 | Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
aef6203b | 3 | 2002, 2003, 2004, 2005 |
252b5132 RH |
4 | Free Software Foundation, Inc. |
5 | Written by Steve Chamberlain steve@cygnus.com | |
6 | ||
2fa9fc65 | 7 | This file is part of GLD, the Gnu Linker. |
252b5132 | 8 | |
2fa9fc65 NC |
9 | GLD is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 2, or (at your option) | |
12 | any later version. | |
252b5132 | 13 | |
2fa9fc65 NC |
14 | GLD is distributed in the hope that it will be useful, |
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 NC |
19 | You should have received a copy of the GNU General Public License |
20 | along with GLD; see the file COPYING. If not, write to the Free | |
75be928b NC |
21 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
22 | 02110-1301, USA. */ | |
252b5132 RH |
23 | |
24 | #include "bfd.h" | |
25 | #include "sysdep.h" | |
26 | #include <stdio.h> | |
3882b010 | 27 | #include "safe-ctype.h" |
252b5132 RH |
28 | #include "libiberty.h" |
29 | #include "progress.h" | |
30 | #include "bfdlink.h" | |
5af11cab | 31 | #include "filenames.h" |
252b5132 RH |
32 | |
33 | #include "ld.h" | |
34 | #include "ldmain.h" | |
35 | #include "ldmisc.h" | |
36 | #include "ldwrite.h" | |
252b5132 RH |
37 | #include "ldexp.h" |
38 | #include "ldlang.h" | |
df2a7313 | 39 | #include <ldgram.h> |
252b5132 RH |
40 | #include "ldlex.h" |
41 | #include "ldfile.h" | |
b71e2778 | 42 | #include "ldemul.h" |
252b5132 RH |
43 | #include "ldctor.h" |
44 | ||
0125cdf2 | 45 | /* Somewhere above, sys/stat.h got included. */ |
252b5132 RH |
46 | #if !defined(S_ISDIR) && defined(S_IFDIR) |
47 | #define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) | |
48 | #endif | |
49 | ||
50 | #include <string.h> | |
51 | ||
52 | #ifdef HAVE_SBRK | |
502bdb00 | 53 | #if !HAVE_DECL_SBRK |
1579bae1 | 54 | extern void *sbrk (); |
252b5132 RH |
55 | #endif |
56 | #endif | |
57 | ||
9c8ebd6a DJ |
58 | #ifndef TARGET_SYSTEM_ROOT |
59 | #define TARGET_SYSTEM_ROOT "" | |
60 | #endif | |
61 | ||
252b5132 RH |
62 | /* EXPORTS */ |
63 | ||
64 | char *default_target; | |
65 | const char *output_filename = "a.out"; | |
66 | ||
67 | /* Name this program was invoked by. */ | |
68 | char *program_name; | |
69 | ||
9c8ebd6a | 70 | /* The prefix for system library directories. */ |
e2243057 | 71 | const char *ld_sysroot; |
9c8ebd6a | 72 | |
3fe38064 NC |
73 | /* The canonical representation of ld_sysroot. */ |
74 | char * ld_canon_sysroot; | |
75 | int ld_canon_sysroot_len; | |
76 | ||
6d5e62f8 | 77 | /* The file that we're creating. */ |
252b5132 RH |
78 | bfd *output_bfd = 0; |
79 | ||
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 AM |
163 | notice, |
164 | einfo | |
252b5132 RH |
165 | }; |
166 | ||
167 | struct bfd_link_info link_info; | |
168 | \f | |
169 | static void | |
1579bae1 | 170 | remove_output (void) |
252b5132 | 171 | { |
6d5e62f8 | 172 | if (output_filename) |
252b5132 | 173 | { |
c92c35e7 AC |
174 | if (output_bfd) |
175 | bfd_cache_close (output_bfd); | |
252b5132 | 176 | if (delete_output_file_on_failure) |
bb14f524 | 177 | unlink_if_ordinary (output_filename); |
252b5132 RH |
178 | } |
179 | } | |
180 | ||
181 | int | |
1579bae1 | 182 | main (int argc, char **argv) |
252b5132 RH |
183 | { |
184 | char *emulation; | |
185 | long start_time = get_run_time (); | |
186 | ||
187 | #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) | |
188 | setlocale (LC_MESSAGES, ""); | |
3882b010 L |
189 | #endif |
190 | #if defined (HAVE_SETLOCALE) | |
191 | setlocale (LC_CTYPE, ""); | |
252b5132 RH |
192 | #endif |
193 | bindtextdomain (PACKAGE, LOCALEDIR); | |
194 | textdomain (PACKAGE); | |
195 | ||
196 | program_name = argv[0]; | |
197 | xmalloc_set_program_name (program_name); | |
198 | ||
199 | START_PROGRESS (program_name, 0); | |
200 | ||
201 | bfd_init (); | |
202 | ||
203 | bfd_set_error_program_name (program_name); | |
204 | ||
205 | xatexit (remove_output); | |
206 | ||
e2243057 RS |
207 | /* Set up the sysroot directory. */ |
208 | ld_sysroot = get_sysroot (argc, argv); | |
209 | if (*ld_sysroot) | |
9c8ebd6a | 210 | { |
e2243057 | 211 | if (*TARGET_SYSTEM_ROOT == 0) |
9c8ebd6a | 212 | { |
e2243057 RS |
213 | einfo ("%P%F: this linker was not configured to use sysroots"); |
214 | ld_sysroot = ""; | |
0125cdf2 | 215 | } |
e2243057 RS |
216 | else |
217 | ld_canon_sysroot = lrealpath (ld_sysroot); | |
0125cdf2 | 218 | } |
3fe38064 NC |
219 | if (ld_canon_sysroot) |
220 | ld_canon_sysroot_len = strlen (ld_canon_sysroot); | |
221 | else | |
222 | ld_canon_sysroot_len = -1; | |
223 | ||
252b5132 RH |
224 | /* Set the default BFD target based on the configured target. Doing |
225 | this permits the linker to be configured for a particular target, | |
226 | and linked against a shared BFD library which was configured for | |
227 | a different target. The macro TARGET is defined by Makefile. */ | |
228 | if (! bfd_set_default_target (TARGET)) | |
229 | { | |
230 | einfo (_("%X%P: can't set BFD default target to `%s': %E\n"), TARGET); | |
231 | xexit (1); | |
232 | } | |
233 | ||
b47c4208 AM |
234 | #if YYDEBUG |
235 | { | |
236 | extern int yydebug; | |
237 | yydebug = 1; | |
238 | } | |
239 | #endif | |
240 | ||
252b5132 | 241 | /* Initialize the data about options. */ |
b34976b6 AM |
242 | trace_files = trace_file_tries = version_printed = FALSE; |
243 | whole_archive = FALSE; | |
244 | config.build_constructors = TRUE; | |
245 | config.dynamic_link = FALSE; | |
246 | config.has_shared = FALSE; | |
a854a4a7 AM |
247 | config.split_by_reloc = (unsigned) -1; |
248 | config.split_by_file = (bfd_size_type) -1; | |
2d643429 | 249 | config.hash_table_size = 0; |
b34976b6 AM |
250 | command_line.force_common_definition = FALSE; |
251 | command_line.inhibit_common_definition = FALSE; | |
252b5132 RH |
252 | command_line.interpreter = NULL; |
253 | command_line.rpath = NULL; | |
b34976b6 AM |
254 | command_line.warn_mismatch = TRUE; |
255 | command_line.check_section_addresses = TRUE; | |
312b768e | 256 | command_line.accept_unknown_input_arch = FALSE; |
35835446 | 257 | command_line.reduce_memory_overheads = FALSE; |
252b5132 | 258 | |
bcaa7b3e L |
259 | sort_section = none; |
260 | ||
252b5132 RH |
261 | /* We initialize DEMANGLING based on the environment variable |
262 | COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the | |
263 | output of the linker, unless COLLECT_NO_DEMANGLE is set in the | |
264 | environment. Acting the same way here lets us provide the same | |
265 | interface by default. */ | |
266 | demangling = getenv ("COLLECT_NO_DEMANGLE") == NULL; | |
267 | ||
1049f94e | 268 | link_info.relocatable = FALSE; |
b34976b6 | 269 | link_info.emitrelocations = FALSE; |
b5067602 | 270 | link_info.task_link = FALSE; |
b34976b6 | 271 | link_info.shared = FALSE; |
36af4a4e JJ |
272 | link_info.pie = FALSE; |
273 | link_info.executable = FALSE; | |
b34976b6 AM |
274 | link_info.symbolic = FALSE; |
275 | link_info.export_dynamic = FALSE; | |
276 | link_info.static_link = FALSE; | |
277 | link_info.traditional_format = FALSE; | |
278 | link_info.optimize = FALSE; | |
560e09e9 NC |
279 | link_info.unresolved_syms_in_objects = RM_NOT_YET_SET; |
280 | link_info.unresolved_syms_in_shared_libs = RM_NOT_YET_SET; | |
b34976b6 AM |
281 | link_info.allow_multiple_definition = FALSE; |
282 | link_info.allow_undefined_version = TRUE; | |
3e3b46e5 | 283 | link_info.create_default_symver = FALSE; |
fc0e6df6 | 284 | link_info.default_imported_symver = FALSE; |
b5067602 AM |
285 | link_info.keep_memory = TRUE; |
286 | link_info.notice_all = FALSE; | |
287 | link_info.nocopyreloc = FALSE; | |
288 | link_info.new_dtags = FALSE; | |
289 | link_info.combreloc = TRUE; | |
290 | link_info.eh_frame_hdr = FALSE; | |
8c37241b | 291 | link_info.relro = FALSE; |
d5cd3933 | 292 | link_info.strip_discarded = TRUE; |
252b5132 | 293 | link_info.strip = strip_none; |
f5fa8ca2 | 294 | link_info.discard = discard_sec_merge; |
b5067602 AM |
295 | link_info.common_skip_ar_aymbols = bfd_link_common_skip_none; |
296 | link_info.callbacks = &link_callbacks; | |
252b5132 RH |
297 | link_info.hash = NULL; |
298 | link_info.keep_hash = NULL; | |
252b5132 RH |
299 | link_info.notice_hash = NULL; |
300 | link_info.wrap_hash = NULL; | |
b5067602 AM |
301 | link_info.input_bfds = NULL; |
302 | link_info.create_object_symbols_section = NULL; | |
303 | link_info.gc_sym_list = NULL; | |
304 | link_info.base_file = NULL; | |
3dbf70a2 MM |
305 | /* SVR4 linkers seem to set DT_INIT and DT_FINI based on magic _init |
306 | and _fini symbols. We are compatible. */ | |
307 | link_info.init_function = "_init"; | |
308 | link_info.fini_function = "_fini"; | |
e0076ab3 | 309 | link_info.pei386_auto_import = -1; |
b34976b6 | 310 | link_info.pei386_runtime_pseudo_reloc = FALSE; |
db6751f2 | 311 | link_info.spare_dynamic_tags = 5; |
1579bae1 AM |
312 | link_info.flags = 0; |
313 | link_info.flags_1 = 0; | |
d9c458fc | 314 | link_info.need_relax_finalize = FALSE; |
8fdd7217 | 315 | link_info.warn_shared_textrel = FALSE; |
57316bff | 316 | link_info.gc_sections = FALSE; |
3dbf70a2 | 317 | |
252b5132 RH |
318 | ldfile_add_arch (""); |
319 | ||
b34976b6 AM |
320 | config.make_executable = TRUE; |
321 | force_make_executable = FALSE; | |
322 | config.magic_demand_paged = TRUE; | |
323 | config.text_read_only = TRUE; | |
252b5132 RH |
324 | |
325 | emulation = get_emulation (argc, argv); | |
326 | ldemul_choose_mode (emulation); | |
742aeb63 | 327 | default_target = ldemul_choose_target (argc, argv); |
252b5132 RH |
328 | lang_init (); |
329 | ldemul_before_parse (); | |
b34976b6 | 330 | lang_has_input_file = FALSE; |
252b5132 RH |
331 | parse_args (argc, argv); |
332 | ||
2d643429 NC |
333 | if (config.hash_table_size != 0) |
334 | bfd_hash_set_default_size (config.hash_table_size); | |
335 | ||
252b5132 RH |
336 | ldemul_set_symbols (); |
337 | ||
1049f94e | 338 | if (link_info.relocatable) |
252b5132 | 339 | { |
57316bff | 340 | if (link_info.gc_sections) |
252b5132 | 341 | einfo ("%P%F: --gc-sections and -r may not be used together\n"); |
252b5132 RH |
342 | else if (command_line.relax) |
343 | einfo (_("%P%F: --relax and -r may not be used together\n")); | |
344 | if (link_info.shared) | |
345 | einfo (_("%P%F: -r and -shared may not be used together\n")); | |
346 | } | |
347 | ||
550bdea6 NC |
348 | if (!config.dynamic_link && link_info.shared) |
349 | einfo (_("%P%F: -static and -shared may not be used together\n")); | |
350 | ||
7333607e JJ |
351 | if (! link_info.shared) |
352 | { | |
353 | if (command_line.filter_shlib) | |
e97cb84f | 354 | einfo (_("%P%F: -F may not be used without -shared\n")); |
7333607e | 355 | if (command_line.auxiliary_filters) |
e97cb84f | 356 | einfo (_("%P%F: -f may not be used without -shared\n")); |
7333607e JJ |
357 | } |
358 | ||
36af4a4e JJ |
359 | if (! link_info.shared || link_info.pie) |
360 | link_info.executable = TRUE; | |
361 | ||
252b5132 RH |
362 | /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I |
363 | don't see how else this can be handled, since in this case we | |
364 | must preserve all externally visible symbols. */ | |
1049f94e | 365 | if (link_info.relocatable && link_info.strip == strip_all) |
252b5132 RH |
366 | { |
367 | link_info.strip = strip_debugger; | |
f5fa8ca2 | 368 | if (link_info.discard == discard_sec_merge) |
252b5132 RH |
369 | link_info.discard = discard_all; |
370 | } | |
371 | ||
372 | /* This essentially adds another -L directory so this must be done after | |
373 | the -L's in argv have been processed. */ | |
374 | set_scripts_dir (); | |
375 | ||
b9a8de1e NC |
376 | /* If we have not already opened and parsed a linker script |
377 | read the emulation's appropriate default script. */ | |
b90e1c6f | 378 | if (saved_script_handle == NULL) |
252b5132 | 379 | { |
252b5132 | 380 | int isfile; |
b7a26f91 | 381 | char *s = ldemul_get_script (&isfile); |
252b5132 RH |
382 | |
383 | if (isfile) | |
384 | ldfile_open_command_file (s); | |
385 | else | |
b7a26f91 | 386 | { |
252b5132 RH |
387 | lex_string = s; |
388 | lex_redirect (s); | |
389 | } | |
390 | parser_input = input_script; | |
391 | yyparse (); | |
392 | lex_string = NULL; | |
393 | } | |
394 | ||
b9a8de1e NC |
395 | if (trace_file_tries) |
396 | { | |
9cb61eab AM |
397 | if (saved_script_handle) |
398 | info_msg (_("using external linker script:")); | |
399 | else | |
400 | info_msg (_("using internal linker script:")); | |
401 | info_msg ("\n==================================================\n"); | |
b9a8de1e NC |
402 | |
403 | if (saved_script_handle) | |
404 | { | |
74699268 | 405 | static const int ld_bufsz = 8193; |
b9a8de1e | 406 | size_t n; |
74699268 | 407 | char *buf = xmalloc (ld_bufsz); |
b9a8de1e NC |
408 | |
409 | rewind (saved_script_handle); | |
74699268 | 410 | while ((n = fread (buf, 1, ld_bufsz - 1, saved_script_handle)) > 0) |
b9a8de1e | 411 | { |
b7a26f91 | 412 | buf[n] = 0; |
b9a8de1e NC |
413 | info_msg (buf); |
414 | } | |
415 | rewind (saved_script_handle); | |
416 | free (buf); | |
417 | } | |
418 | else | |
419 | { | |
420 | int isfile; | |
421 | ||
b7a26f91 | 422 | info_msg (ldemul_get_script (&isfile)); |
b9a8de1e | 423 | } |
b7a26f91 | 424 | |
b9a8de1e NC |
425 | info_msg ("\n==================================================\n"); |
426 | } | |
427 | ||
252b5132 RH |
428 | lang_final (); |
429 | ||
b34976b6 | 430 | if (!lang_has_input_file) |
252b5132 RH |
431 | { |
432 | if (version_printed) | |
433 | xexit (0); | |
434 | einfo (_("%P%F: no input files\n")); | |
435 | } | |
436 | ||
437 | if (trace_files) | |
0125cdf2 | 438 | info_msg (_("%P: mode %s\n"), emulation); |
252b5132 RH |
439 | |
440 | ldemul_after_parse (); | |
441 | ||
252b5132 RH |
442 | if (config.map_filename) |
443 | { | |
444 | if (strcmp (config.map_filename, "-") == 0) | |
445 | { | |
446 | config.map_file = stdout; | |
447 | } | |
448 | else | |
449 | { | |
450 | config.map_file = fopen (config.map_filename, FOPEN_WT); | |
451 | if (config.map_file == (FILE *) NULL) | |
452 | { | |
453 | bfd_set_error (bfd_error_system_call); | |
454 | einfo (_("%P%F: cannot open map file %s: %E\n"), | |
455 | config.map_filename); | |
456 | } | |
457 | } | |
458 | } | |
459 | ||
252b5132 RH |
460 | lang_process (); |
461 | ||
462 | /* Print error messages for any missing symbols, for any warning | |
6d5e62f8 | 463 | symbols, and possibly multiple definitions. */ |
1049f94e | 464 | if (link_info.relocatable) |
252b5132 RH |
465 | output_bfd->flags &= ~EXEC_P; |
466 | else | |
467 | output_bfd->flags |= EXEC_P; | |
468 | ||
469 | ldwrite (); | |
470 | ||
471 | if (config.map_file != NULL) | |
472 | lang_map (); | |
473 | if (command_line.cref) | |
474 | output_cref (config.map_file != NULL ? config.map_file : stdout); | |
475 | if (nocrossref_list != NULL) | |
476 | check_nocrossrefs (); | |
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 | { | |
492 | if (! bfd_close (output_bfd)) | |
493 | einfo (_("%F%B: final close failed: %E\n"), output_bfd); | |
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++) | |
596 | if (strncmp (argv[i], "--sysroot=", strlen ("--sysroot=")) == 0) | |
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 | { | |
625 | if (!strncmp (argv[i], "-m", 2)) | |
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)); |
252b5132 RH |
779 | if (! bfd_hash_table_init_n (link_info.notice_hash, |
780 | bfd_hash_newfunc, | |
781 | 61)) | |
782 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
6d5e62f8 | 783 | } |
252b5132 | 784 | |
1579bae1 | 785 | if (bfd_hash_lookup (link_info.notice_hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
786 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); |
787 | } | |
788 | ||
789 | /* Record a symbol to be wrapped, from the --wrap option. */ | |
790 | ||
791 | void | |
1579bae1 | 792 | add_wrap (const char *name) |
252b5132 RH |
793 | { |
794 | if (link_info.wrap_hash == NULL) | |
795 | { | |
1579bae1 | 796 | link_info.wrap_hash = xmalloc (sizeof (struct bfd_hash_table)); |
252b5132 RH |
797 | if (! bfd_hash_table_init_n (link_info.wrap_hash, |
798 | bfd_hash_newfunc, | |
799 | 61)) | |
800 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
801 | } | |
0125cdf2 | 802 | |
b34976b6 | 803 | if (bfd_hash_lookup (link_info.wrap_hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
804 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); |
805 | } | |
806 | ||
807 | /* Handle the -retain-symbols-file option. */ | |
808 | ||
809 | void | |
1579bae1 | 810 | add_keepsyms_file (const char *filename) |
252b5132 RH |
811 | { |
812 | FILE *file; | |
813 | char *buf; | |
814 | size_t bufsize; | |
815 | int c; | |
816 | ||
817 | if (link_info.strip == strip_some) | |
818 | einfo (_("%X%P: error: duplicate retain-symbols-file\n")); | |
819 | ||
820 | file = fopen (filename, "r"); | |
1579bae1 | 821 | if (file == NULL) |
252b5132 RH |
822 | { |
823 | bfd_set_error (bfd_error_system_call); | |
824 | einfo ("%X%P: %s: %E\n", filename); | |
825 | return; | |
826 | } | |
827 | ||
1579bae1 | 828 | link_info.keep_hash = xmalloc (sizeof (struct bfd_hash_table)); |
252b5132 RH |
829 | if (! bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc)) |
830 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
831 | ||
832 | bufsize = 100; | |
1579bae1 | 833 | buf = xmalloc (bufsize); |
252b5132 RH |
834 | |
835 | c = getc (file); | |
836 | while (c != EOF) | |
837 | { | |
3882b010 | 838 | while (ISSPACE (c)) |
252b5132 RH |
839 | c = getc (file); |
840 | ||
841 | if (c != EOF) | |
842 | { | |
843 | size_t len = 0; | |
844 | ||
3882b010 | 845 | while (! ISSPACE (c) && c != EOF) |
252b5132 RH |
846 | { |
847 | buf[len] = c; | |
848 | ++len; | |
849 | if (len >= bufsize) | |
850 | { | |
851 | bufsize *= 2; | |
852 | buf = xrealloc (buf, bufsize); | |
853 | } | |
854 | c = getc (file); | |
855 | } | |
856 | ||
857 | buf[len] = '\0'; | |
858 | ||
1579bae1 | 859 | if (bfd_hash_lookup (link_info.keep_hash, buf, TRUE, TRUE) == NULL) |
252b5132 RH |
860 | einfo (_("%P%F: bfd_hash_lookup for insertion failed: %E\n")); |
861 | } | |
862 | } | |
863 | ||
864 | if (link_info.strip != strip_none) | |
865 | einfo (_("%P: `-retain-symbols-file' overrides `-s' and `-S'\n")); | |
866 | ||
5ed6aba4 | 867 | free (buf); |
252b5132 RH |
868 | link_info.strip = strip_some; |
869 | } | |
870 | \f | |
871 | /* Callbacks from the BFD linker routines. */ | |
872 | ||
873 | /* This is called when BFD has decided to include an archive member in | |
874 | a link. */ | |
875 | ||
b34976b6 | 876 | static bfd_boolean |
e1fffbe6 | 877 | add_archive_element (struct bfd_link_info *info, |
1579bae1 AM |
878 | bfd *abfd, |
879 | const char *name) | |
252b5132 RH |
880 | { |
881 | lang_input_statement_type *input; | |
882 | ||
1579bae1 | 883 | input = xmalloc (sizeof (lang_input_statement_type)); |
252b5132 RH |
884 | input->filename = abfd->filename; |
885 | input->local_sym_name = abfd->filename; | |
886 | input->the_bfd = abfd; | |
887 | input->asymbols = NULL; | |
888 | input->next = NULL; | |
b34976b6 AM |
889 | input->just_syms_flag = FALSE; |
890 | input->loaded = FALSE; | |
891 | input->search_dirs_flag = FALSE; | |
252b5132 RH |
892 | |
893 | /* FIXME: The following fields are not set: header.next, | |
894 | header.type, closed, passive_position, symbol_count, | |
895 | next_real_file, is_archive, target, real. This bit of code is | |
896 | from the old decode_library_subfile function. I don't know | |
897 | whether any of those fields matters. */ | |
898 | ||
899 | ldlang_add_file (input); | |
900 | ||
1579bae1 | 901 | if (config.map_file != NULL) |
252b5132 | 902 | { |
b34976b6 | 903 | static bfd_boolean header_printed; |
252b5132 RH |
904 | struct bfd_link_hash_entry *h; |
905 | bfd *from; | |
906 | int len; | |
907 | ||
e1fffbe6 | 908 | h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); |
252b5132 RH |
909 | |
910 | if (h == NULL) | |
911 | from = NULL; | |
912 | else | |
913 | { | |
914 | switch (h->type) | |
915 | { | |
916 | default: | |
917 | from = NULL; | |
918 | break; | |
919 | ||
920 | case bfd_link_hash_defined: | |
921 | case bfd_link_hash_defweak: | |
922 | from = h->u.def.section->owner; | |
923 | break; | |
924 | ||
925 | case bfd_link_hash_undefined: | |
926 | case bfd_link_hash_undefweak: | |
927 | from = h->u.undef.abfd; | |
928 | break; | |
929 | ||
930 | case bfd_link_hash_common: | |
931 | from = h->u.c.p->section->owner; | |
932 | break; | |
933 | } | |
934 | } | |
935 | ||
936 | if (! header_printed) | |
937 | { | |
938 | char buf[100]; | |
939 | ||
e3c8793a | 940 | sprintf (buf, _("Archive member included because of file (symbol)\n\n")); |
252b5132 | 941 | minfo ("%s", buf); |
b34976b6 | 942 | header_printed = TRUE; |
252b5132 RH |
943 | } |
944 | ||
945 | if (bfd_my_archive (abfd) == NULL) | |
946 | { | |
947 | minfo ("%s", bfd_get_filename (abfd)); | |
948 | len = strlen (bfd_get_filename (abfd)); | |
949 | } | |
950 | else | |
951 | { | |
952 | minfo ("%s(%s)", bfd_get_filename (bfd_my_archive (abfd)), | |
953 | bfd_get_filename (abfd)); | |
954 | len = (strlen (bfd_get_filename (bfd_my_archive (abfd))) | |
955 | + strlen (bfd_get_filename (abfd)) | |
956 | + 2); | |
957 | } | |
958 | ||
959 | if (len >= 29) | |
960 | { | |
961 | print_nl (); | |
962 | len = 0; | |
963 | } | |
964 | while (len < 30) | |
965 | { | |
966 | print_space (); | |
967 | ++len; | |
968 | } | |
969 | ||
970 | if (from != NULL) | |
971 | minfo ("%B ", from); | |
972 | if (h != NULL) | |
973 | minfo ("(%T)\n", h->root.string); | |
974 | else | |
975 | minfo ("(%s)\n", name); | |
976 | } | |
977 | ||
978 | if (trace_files || trace_file_tries) | |
979 | info_msg ("%I\n", input); | |
980 | ||
b34976b6 | 981 | return TRUE; |
252b5132 RH |
982 | } |
983 | ||
984 | /* This is called when BFD has discovered a symbol which is defined | |
985 | multiple times. */ | |
986 | ||
b34976b6 | 987 | static bfd_boolean |
1579bae1 AM |
988 | multiple_definition (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
989 | const char *name, | |
990 | bfd *obfd, | |
991 | asection *osec, | |
992 | bfd_vma oval, | |
993 | bfd *nbfd, | |
994 | asection *nsec, | |
995 | bfd_vma nval) | |
252b5132 RH |
996 | { |
997 | /* If either section has the output_section field set to | |
998 | bfd_abs_section_ptr, it means that the section is being | |
999 | discarded, and this is not really a multiple definition at all. | |
1000 | FIXME: It would be cleaner to somehow ignore symbols defined in | |
1001 | sections which are being discarded. */ | |
1002 | if ((osec->output_section != NULL | |
1003 | && ! bfd_is_abs_section (osec) | |
1004 | && bfd_is_abs_section (osec->output_section)) | |
1005 | || (nsec->output_section != NULL | |
1006 | && ! bfd_is_abs_section (nsec) | |
1007 | && bfd_is_abs_section (nsec->output_section))) | |
b34976b6 | 1008 | return TRUE; |
252b5132 RH |
1009 | |
1010 | einfo (_("%X%C: multiple definition of `%T'\n"), | |
1011 | nbfd, nsec, nval, name); | |
1579bae1 | 1012 | if (obfd != NULL) |
252b5132 | 1013 | einfo (_("%D: first defined here\n"), obfd, osec, oval); |
9b14b192 NC |
1014 | |
1015 | if (command_line.relax) | |
1016 | { | |
1017 | einfo (_("%P: Disabling relaxation: it will not work with multiple definitions\n")); | |
1018 | command_line.relax = 0; | |
1019 | } | |
6d5e62f8 | 1020 | |
b34976b6 | 1021 | return TRUE; |
252b5132 RH |
1022 | } |
1023 | ||
1024 | /* This is called when there is a definition of a common symbol, or | |
1025 | when a common symbol is found for a symbol that is already defined, | |
1026 | or when two common symbols are found. We only do something if | |
1027 | -warn-common was used. */ | |
1028 | ||
b34976b6 | 1029 | static bfd_boolean |
1579bae1 AM |
1030 | multiple_common (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1031 | const char *name, | |
1032 | bfd *obfd, | |
1033 | enum bfd_link_hash_type otype, | |
1034 | bfd_vma osize, | |
1035 | bfd *nbfd, | |
1036 | enum bfd_link_hash_type ntype, | |
1037 | bfd_vma nsize) | |
252b5132 RH |
1038 | { |
1039 | if (! config.warn_common) | |
b34976b6 | 1040 | return TRUE; |
252b5132 RH |
1041 | |
1042 | if (ntype == bfd_link_hash_defined | |
1043 | || ntype == bfd_link_hash_defweak | |
1044 | || ntype == bfd_link_hash_indirect) | |
1045 | { | |
1046 | ASSERT (otype == bfd_link_hash_common); | |
1047 | einfo (_("%B: warning: definition of `%T' overriding common\n"), | |
1048 | nbfd, name); | |
1049 | if (obfd != NULL) | |
1050 | einfo (_("%B: warning: common is here\n"), obfd); | |
1051 | } | |
1052 | else if (otype == bfd_link_hash_defined | |
1053 | || otype == bfd_link_hash_defweak | |
1054 | || otype == bfd_link_hash_indirect) | |
1055 | { | |
1056 | ASSERT (ntype == bfd_link_hash_common); | |
1057 | einfo (_("%B: warning: common of `%T' overridden by definition\n"), | |
1058 | nbfd, name); | |
1059 | if (obfd != NULL) | |
1060 | einfo (_("%B: warning: defined here\n"), obfd); | |
1061 | } | |
1062 | else | |
1063 | { | |
1064 | ASSERT (otype == bfd_link_hash_common && ntype == bfd_link_hash_common); | |
1065 | if (osize > nsize) | |
1066 | { | |
1067 | einfo (_("%B: warning: common of `%T' overridden by larger common\n"), | |
1068 | nbfd, name); | |
1069 | if (obfd != NULL) | |
1070 | einfo (_("%B: warning: larger common is here\n"), obfd); | |
1071 | } | |
1072 | else if (nsize > osize) | |
1073 | { | |
1074 | einfo (_("%B: warning: common of `%T' overriding smaller common\n"), | |
1075 | nbfd, name); | |
1076 | if (obfd != NULL) | |
1077 | einfo (_("%B: warning: smaller common is here\n"), obfd); | |
1078 | } | |
1079 | else | |
1080 | { | |
1081 | einfo (_("%B: warning: multiple common of `%T'\n"), nbfd, name); | |
1082 | if (obfd != NULL) | |
1083 | einfo (_("%B: warning: previous common is here\n"), obfd); | |
1084 | } | |
1085 | } | |
1086 | ||
b34976b6 | 1087 | return TRUE; |
252b5132 RH |
1088 | } |
1089 | ||
1090 | /* This is called when BFD has discovered a set element. H is the | |
1091 | entry in the linker hash table for the set. SECTION and VALUE | |
1092 | represent a value which should be added to the set. */ | |
1093 | ||
b34976b6 | 1094 | static bfd_boolean |
1579bae1 AM |
1095 | add_to_set (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1096 | struct bfd_link_hash_entry *h, | |
1097 | bfd_reloc_code_real_type reloc, | |
1098 | bfd *abfd, | |
1099 | asection *section, | |
1100 | bfd_vma value) | |
252b5132 RH |
1101 | { |
1102 | if (config.warn_constructors) | |
1103 | einfo (_("%P: warning: global constructor %s used\n"), | |
1104 | h->root.string); | |
1105 | ||
1106 | if (! config.build_constructors) | |
b34976b6 | 1107 | return TRUE; |
252b5132 | 1108 | |
1579bae1 | 1109 | ldctor_add_set_entry (h, reloc, NULL, section, value); |
252b5132 RH |
1110 | |
1111 | if (h->type == bfd_link_hash_new) | |
1112 | { | |
1113 | h->type = bfd_link_hash_undefined; | |
1114 | h->u.undef.abfd = abfd; | |
1115 | /* We don't call bfd_link_add_undef to add this to the list of | |
1116 | undefined symbols because we are going to define it | |
1117 | ourselves. */ | |
1118 | } | |
1119 | ||
b34976b6 | 1120 | return TRUE; |
252b5132 RH |
1121 | } |
1122 | ||
1123 | /* This is called when BFD has discovered a constructor. This is only | |
1124 | called for some object file formats--those which do not handle | |
1125 | constructors in some more clever fashion. This is similar to | |
1126 | adding an element to a set, but less general. */ | |
1127 | ||
b34976b6 | 1128 | static bfd_boolean |
1579bae1 AM |
1129 | constructor_callback (struct bfd_link_info *info, |
1130 | bfd_boolean constructor, | |
1131 | const char *name, | |
1132 | bfd *abfd, | |
1133 | asection *section, | |
1134 | bfd_vma value) | |
252b5132 RH |
1135 | { |
1136 | char *s; | |
1137 | struct bfd_link_hash_entry *h; | |
1138 | char set_name[1 + sizeof "__CTOR_LIST__"]; | |
1139 | ||
1140 | if (config.warn_constructors) | |
1141 | einfo (_("%P: warning: global constructor %s used\n"), name); | |
1142 | ||
1143 | if (! config.build_constructors) | |
b34976b6 | 1144 | return TRUE; |
252b5132 RH |
1145 | |
1146 | /* Ensure that BFD_RELOC_CTOR exists now, so that we can give a | |
1147 | useful error message. */ | |
1148 | if (bfd_reloc_type_lookup (output_bfd, BFD_RELOC_CTOR) == NULL | |
e1fffbe6 | 1149 | && (info->relocatable |
252b5132 RH |
1150 | || bfd_reloc_type_lookup (abfd, BFD_RELOC_CTOR) == NULL)) |
1151 | einfo (_("%P%F: BFD backend error: BFD_RELOC_CTOR unsupported\n")); | |
1152 | ||
1153 | s = set_name; | |
1154 | if (bfd_get_symbol_leading_char (abfd) != '\0') | |
1155 | *s++ = bfd_get_symbol_leading_char (abfd); | |
1156 | if (constructor) | |
1157 | strcpy (s, "__CTOR_LIST__"); | |
1158 | else | |
1159 | strcpy (s, "__DTOR_LIST__"); | |
1160 | ||
b34976b6 | 1161 | h = bfd_link_hash_lookup (info->hash, set_name, TRUE, TRUE, TRUE); |
252b5132 RH |
1162 | if (h == (struct bfd_link_hash_entry *) NULL) |
1163 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); | |
1164 | if (h->type == bfd_link_hash_new) | |
1165 | { | |
1166 | h->type = bfd_link_hash_undefined; | |
1167 | h->u.undef.abfd = abfd; | |
1168 | /* We don't call bfd_link_add_undef to add this to the list of | |
1169 | undefined symbols because we are going to define it | |
1170 | ourselves. */ | |
1171 | } | |
1172 | ||
1173 | ldctor_add_set_entry (h, BFD_RELOC_CTOR, name, section, value); | |
b34976b6 | 1174 | return TRUE; |
252b5132 RH |
1175 | } |
1176 | ||
1177 | /* A structure used by warning_callback to pass information through | |
1178 | bfd_map_over_sections. */ | |
1179 | ||
0125cdf2 NC |
1180 | struct warning_callback_info |
1181 | { | |
b34976b6 | 1182 | bfd_boolean found; |
252b5132 RH |
1183 | const char *warning; |
1184 | const char *symbol; | |
1185 | asymbol **asymbols; | |
1186 | }; | |
1187 | ||
1188 | /* This is called when there is a reference to a warning symbol. */ | |
1189 | ||
b34976b6 | 1190 | static bfd_boolean |
1579bae1 AM |
1191 | warning_callback (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1192 | const char *warning, | |
1193 | const char *symbol, | |
1194 | bfd *abfd, | |
1195 | asection *section, | |
1196 | bfd_vma address) | |
252b5132 RH |
1197 | { |
1198 | /* This is a hack to support warn_multiple_gp. FIXME: This should | |
1199 | have a cleaner interface, but what? */ | |
1200 | if (! config.warn_multiple_gp | |
1201 | && strcmp (warning, "using multiple gp values") == 0) | |
b34976b6 | 1202 | return TRUE; |
252b5132 RH |
1203 | |
1204 | if (section != NULL) | |
300475fe | 1205 | einfo ("%C: %s%s\n", abfd, section, address, _("warning: "), warning); |
252b5132 | 1206 | else if (abfd == NULL) |
300475fe | 1207 | einfo ("%P: %s%s\n", _("warning: "), warning); |
252b5132 | 1208 | else if (symbol == NULL) |
300475fe | 1209 | einfo ("%B: %s%s\n", abfd, _("warning: "), warning); |
252b5132 RH |
1210 | else |
1211 | { | |
1212 | lang_input_statement_type *entry; | |
1213 | asymbol **asymbols; | |
1214 | struct warning_callback_info info; | |
1215 | ||
1216 | /* Look through the relocs to see if we can find a plausible | |
1217 | address. */ | |
252b5132 RH |
1218 | entry = (lang_input_statement_type *) abfd->usrdata; |
1219 | if (entry != NULL && entry->asymbols != NULL) | |
1220 | asymbols = entry->asymbols; | |
1221 | else | |
1222 | { | |
1223 | long symsize; | |
1224 | long symbol_count; | |
1225 | ||
1226 | symsize = bfd_get_symtab_upper_bound (abfd); | |
1227 | if (symsize < 0) | |
1228 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
1579bae1 | 1229 | asymbols = xmalloc (symsize); |
252b5132 RH |
1230 | symbol_count = bfd_canonicalize_symtab (abfd, asymbols); |
1231 | if (symbol_count < 0) | |
1232 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
1233 | if (entry != NULL) | |
1234 | { | |
1235 | entry->asymbols = asymbols; | |
1236 | entry->symbol_count = symbol_count; | |
1237 | } | |
1238 | } | |
1239 | ||
b34976b6 | 1240 | info.found = FALSE; |
252b5132 RH |
1241 | info.warning = warning; |
1242 | info.symbol = symbol; | |
1243 | info.asymbols = asymbols; | |
1579bae1 | 1244 | bfd_map_over_sections (abfd, warning_find_reloc, &info); |
252b5132 RH |
1245 | |
1246 | if (! info.found) | |
300475fe | 1247 | einfo ("%B: %s%s\n", abfd, _("warning: "), warning); |
252b5132 RH |
1248 | |
1249 | if (entry == NULL) | |
1250 | free (asymbols); | |
1251 | } | |
1252 | ||
b34976b6 | 1253 | return TRUE; |
252b5132 RH |
1254 | } |
1255 | ||
1256 | /* This is called by warning_callback for each section. It checks the | |
1257 | relocs of the section to see if it can find a reference to the | |
1258 | symbol which triggered the warning. If it can, it uses the reloc | |
1259 | to give an error message with a file and line number. */ | |
1260 | ||
1261 | static void | |
1579bae1 | 1262 | warning_find_reloc (bfd *abfd, asection *sec, void *iarg) |
252b5132 | 1263 | { |
1579bae1 | 1264 | struct warning_callback_info *info = iarg; |
252b5132 RH |
1265 | long relsize; |
1266 | arelent **relpp; | |
1267 | long relcount; | |
1268 | arelent **p, **pend; | |
1269 | ||
1270 | if (info->found) | |
1271 | return; | |
1272 | ||
1273 | relsize = bfd_get_reloc_upper_bound (abfd, sec); | |
1274 | if (relsize < 0) | |
1275 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1276 | if (relsize == 0) | |
1277 | return; | |
1278 | ||
1579bae1 | 1279 | relpp = xmalloc (relsize); |
252b5132 RH |
1280 | relcount = bfd_canonicalize_reloc (abfd, sec, relpp, info->asymbols); |
1281 | if (relcount < 0) | |
1282 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1283 | ||
1284 | p = relpp; | |
1285 | pend = p + relcount; | |
1286 | for (; p < pend && *p != NULL; p++) | |
1287 | { | |
1288 | arelent *q = *p; | |
1289 | ||
1290 | if (q->sym_ptr_ptr != NULL | |
1291 | && *q->sym_ptr_ptr != NULL | |
1292 | && strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), info->symbol) == 0) | |
1293 | { | |
1294 | /* We found a reloc for the symbol we are looking for. */ | |
300475fe HPN |
1295 | einfo ("%C: %s%s\n", abfd, sec, q->address, _("warning: "), |
1296 | info->warning); | |
b34976b6 | 1297 | info->found = TRUE; |
252b5132 RH |
1298 | break; |
1299 | } | |
1300 | } | |
1301 | ||
1302 | free (relpp); | |
1303 | } | |
1304 | ||
1305 | /* This is called when an undefined symbol is found. */ | |
1306 | ||
b34976b6 | 1307 | static bfd_boolean |
1579bae1 AM |
1308 | undefined_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1309 | const char *name, | |
1310 | bfd *abfd, | |
1311 | asection *section, | |
1312 | bfd_vma address, | |
0b28295d | 1313 | bfd_boolean error) |
252b5132 RH |
1314 | { |
1315 | static char *error_name; | |
1316 | static unsigned int error_count; | |
1317 | ||
1318 | #define MAX_ERRORS_IN_A_ROW 5 | |
1319 | ||
1320 | if (config.warn_once) | |
1321 | { | |
1322 | static struct bfd_hash_table *hash; | |
1323 | ||
1324 | /* Only warn once about a particular undefined symbol. */ | |
252b5132 RH |
1325 | if (hash == NULL) |
1326 | { | |
1579bae1 | 1327 | hash = xmalloc (sizeof (struct bfd_hash_table)); |
252b5132 RH |
1328 | if (! bfd_hash_table_init (hash, bfd_hash_newfunc)) |
1329 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); | |
1330 | } | |
1331 | ||
b34976b6 AM |
1332 | if (bfd_hash_lookup (hash, name, FALSE, FALSE) != NULL) |
1333 | return TRUE; | |
252b5132 | 1334 | |
b34976b6 | 1335 | if (bfd_hash_lookup (hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
1336 | einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); |
1337 | } | |
1338 | ||
1339 | /* We never print more than a reasonable number of errors in a row | |
1340 | for a single symbol. */ | |
1579bae1 | 1341 | if (error_name != NULL |
252b5132 RH |
1342 | && strcmp (name, error_name) == 0) |
1343 | ++error_count; | |
1344 | else | |
1345 | { | |
1346 | error_count = 0; | |
1579bae1 | 1347 | if (error_name != NULL) |
252b5132 | 1348 | free (error_name); |
d1b2b2dc | 1349 | error_name = xstrdup (name); |
252b5132 RH |
1350 | } |
1351 | ||
1352 | if (section != NULL) | |
1353 | { | |
1354 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1355 | { |
0b28295d ILT |
1356 | if (error) |
1357 | einfo (_("%X%C: undefined reference to `%T'\n"), | |
1358 | abfd, section, address, name); | |
1359 | else | |
1360 | einfo (_("%C: warning: undefined reference to `%T'\n"), | |
1361 | abfd, section, address, name); | |
b6f29aaa | 1362 | } |
252b5132 | 1363 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1364 | { |
1365 | if (error) | |
1366 | einfo (_("%X%D: more undefined references to `%T' follow\n"), | |
1367 | abfd, section, address, name); | |
1368 | else | |
1369 | einfo (_("%D: warning: more undefined references to `%T' follow\n"), | |
1370 | abfd, section, address, name); | |
1371 | } | |
1372 | else if (error) | |
1373 | einfo ("%X"); | |
252b5132 RH |
1374 | } |
1375 | else | |
1376 | { | |
1377 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1378 | { |
0b28295d ILT |
1379 | if (error) |
1380 | einfo (_("%X%B: undefined reference to `%T'\n"), | |
1381 | abfd, name); | |
1382 | else | |
1383 | einfo (_("%B: warning: undefined reference to `%T'\n"), | |
1384 | abfd, name); | |
b6f29aaa | 1385 | } |
252b5132 | 1386 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1387 | { |
1388 | if (error) | |
1389 | einfo (_("%X%B: more undefined references to `%T' follow\n"), | |
1390 | abfd, name); | |
1391 | else | |
1392 | einfo (_("%B: warning: more undefined references to `%T' follow\n"), | |
1393 | abfd, name); | |
1394 | } | |
1395 | else if (error) | |
1396 | einfo ("%X"); | |
252b5132 RH |
1397 | } |
1398 | ||
b34976b6 | 1399 | return TRUE; |
252b5132 RH |
1400 | } |
1401 | ||
8aae64e6 AO |
1402 | /* Counter to limit the number of relocation overflow error messages |
1403 | to print. Errors are printed as it is decremented. When it's | |
1404 | called and the counter is zero, a final message is printed | |
1405 | indicating more relocations were omitted. When it gets to -1, no | |
1406 | such errors are printed. If it's initially set to a value less | |
1407 | than -1, all such errors will be printed (--verbose does this). */ | |
1408 | ||
1409 | int overflow_cutoff_limit = 10; | |
1410 | ||
252b5132 RH |
1411 | /* This is called when a reloc overflows. */ |
1412 | ||
b34976b6 | 1413 | static bfd_boolean |
1579bae1 | 1414 | reloc_overflow (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
dfeffb9f | 1415 | struct bfd_link_hash_entry *entry, |
1579bae1 AM |
1416 | const char *name, |
1417 | const char *reloc_name, | |
1418 | bfd_vma addend, | |
1419 | bfd *abfd, | |
1420 | asection *section, | |
1421 | bfd_vma address) | |
252b5132 | 1422 | { |
8aae64e6 AO |
1423 | if (overflow_cutoff_limit == -1) |
1424 | return TRUE; | |
1425 | ||
e1fffbe6 | 1426 | einfo ("%X%C:", abfd, section, address); |
8aae64e6 AO |
1427 | |
1428 | if (overflow_cutoff_limit >= 0 | |
1429 | && overflow_cutoff_limit-- == 0) | |
1430 | { | |
1431 | einfo (_(" additional relocation overflows omitted from the output\n")); | |
1432 | return TRUE; | |
1433 | } | |
1434 | ||
dfeffb9f L |
1435 | if (entry) |
1436 | { | |
1437 | while (entry->type == bfd_link_hash_indirect | |
1438 | || entry->type == bfd_link_hash_warning) | |
1439 | entry = entry->u.i.link; | |
1440 | switch (entry->type) | |
1441 | { | |
1442 | case bfd_link_hash_undefined: | |
1443 | case bfd_link_hash_undefweak: | |
1444 | einfo (_(" relocation truncated to fit: %s against undefined symbol `%T'"), | |
1445 | reloc_name, entry->root.string); | |
1446 | break; | |
1447 | case bfd_link_hash_defined: | |
1448 | case bfd_link_hash_defweak: | |
1449 | einfo (_(" relocation truncated to fit: %s against symbol `%T' defined in %A section in %B"), | |
1450 | reloc_name, entry->root.string, | |
a6e1b90f L |
1451 | entry->u.def.section, |
1452 | entry->u.def.section == bfd_abs_section_ptr | |
1453 | ? output_bfd : entry->u.def.section->owner); | |
dfeffb9f L |
1454 | break; |
1455 | default: | |
1456 | abort (); | |
1457 | break; | |
1458 | } | |
1459 | } | |
1460 | else | |
1461 | einfo (_(" relocation truncated to fit: %s against `%T'"), | |
1462 | reloc_name, name); | |
252b5132 RH |
1463 | if (addend != 0) |
1464 | einfo ("+%v", addend); | |
1465 | einfo ("\n"); | |
b34976b6 | 1466 | return TRUE; |
252b5132 RH |
1467 | } |
1468 | ||
1469 | /* This is called when a dangerous relocation is made. */ | |
1470 | ||
b34976b6 | 1471 | static bfd_boolean |
1579bae1 AM |
1472 | reloc_dangerous (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1473 | const char *message, | |
1474 | bfd *abfd, | |
1475 | asection *section, | |
1476 | bfd_vma address) | |
252b5132 | 1477 | { |
e1fffbe6 AM |
1478 | einfo (_("%X%C: dangerous relocation: %s\n"), |
1479 | abfd, section, address, message); | |
b34976b6 | 1480 | return TRUE; |
252b5132 RH |
1481 | } |
1482 | ||
1483 | /* This is called when a reloc is being generated attached to a symbol | |
1484 | that is not being output. */ | |
1485 | ||
b34976b6 | 1486 | static bfd_boolean |
1579bae1 AM |
1487 | unattached_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1488 | const char *name, | |
1489 | bfd *abfd, | |
1490 | asection *section, | |
1491 | bfd_vma address) | |
252b5132 | 1492 | { |
e1fffbe6 AM |
1493 | einfo (_("%X%C: reloc refers to symbol `%T' which is not being output\n"), |
1494 | abfd, section, address, name); | |
b34976b6 | 1495 | return TRUE; |
252b5132 RH |
1496 | } |
1497 | ||
1498 | /* This is called if link_info.notice_all is set, or when a symbol in | |
1499 | link_info.notice_hash is found. Symbols are put in notice_hash | |
1500 | using the -y option. */ | |
1501 | ||
b34976b6 | 1502 | static bfd_boolean |
1579bae1 AM |
1503 | notice (struct bfd_link_info *info, |
1504 | const char *name, | |
1505 | bfd *abfd, | |
1506 | asection *section, | |
1507 | bfd_vma value) | |
252b5132 RH |
1508 | { |
1509 | if (! info->notice_all | |
1510 | || (info->notice_hash != NULL | |
b34976b6 | 1511 | && bfd_hash_lookup (info->notice_hash, name, FALSE, FALSE) != NULL)) |
252b5132 RH |
1512 | { |
1513 | if (bfd_is_und_section (section)) | |
1514 | einfo ("%B: reference to %s\n", abfd, name); | |
1515 | else | |
1516 | einfo ("%B: definition of %s\n", abfd, name); | |
1517 | } | |
1518 | ||
1519 | if (command_line.cref || nocrossref_list != NULL) | |
1520 | add_cref (name, abfd, section, value); | |
1521 | ||
b34976b6 | 1522 | return TRUE; |
252b5132 | 1523 | } |