Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* Main program of GNU linker. |
4e5bae56 | 2 | Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, |
4a43e768 | 3 | 2002, 2003, 2004 |
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 | |
21 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
22 | 02111-1307, 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 | |
53 | #ifdef NEED_DECLARATION_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 DJ |
70 | /* The prefix for system library directories. */ |
71 | char *ld_sysroot; | |
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 | ||
0125cdf2 | 113 | static char *get_emulation |
1579bae1 | 114 | (int, char **); |
0125cdf2 | 115 | static void set_scripts_dir |
1579bae1 | 116 | (void); |
0125cdf2 | 117 | static bfd_boolean add_archive_element |
1579bae1 | 118 | (struct bfd_link_info *, bfd *, const char *); |
0125cdf2 | 119 | static bfd_boolean multiple_definition |
1579bae1 AM |
120 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma, |
121 | bfd *, asection *, bfd_vma); | |
0125cdf2 | 122 | static bfd_boolean multiple_common |
1579bae1 AM |
123 | (struct bfd_link_info *, const char *, bfd *, enum bfd_link_hash_type, |
124 | bfd_vma, bfd *, enum bfd_link_hash_type, bfd_vma); | |
0125cdf2 | 125 | static bfd_boolean add_to_set |
1579bae1 AM |
126 | (struct bfd_link_info *, struct bfd_link_hash_entry *, |
127 | bfd_reloc_code_real_type, bfd *, asection *, bfd_vma); | |
0125cdf2 | 128 | static bfd_boolean constructor_callback |
1579bae1 AM |
129 | (struct bfd_link_info *, bfd_boolean, const char *, bfd *, |
130 | asection *, bfd_vma); | |
0125cdf2 | 131 | static bfd_boolean warning_callback |
1579bae1 AM |
132 | (struct bfd_link_info *, const char *, const char *, bfd *, |
133 | asection *, bfd_vma); | |
0125cdf2 | 134 | static void warning_find_reloc |
1579bae1 | 135 | (bfd *, asection *, void *); |
0125cdf2 | 136 | static bfd_boolean undefined_symbol |
1579bae1 AM |
137 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma, |
138 | bfd_boolean); | |
0125cdf2 | 139 | static bfd_boolean reloc_overflow |
dfeffb9f L |
140 | (struct bfd_link_info *, struct bfd_link_hash_entry *, const char *, |
141 | const char *, bfd_vma, bfd *, asection *, bfd_vma); | |
0125cdf2 | 142 | static bfd_boolean reloc_dangerous |
1579bae1 | 143 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
0125cdf2 | 144 | static bfd_boolean unattached_reloc |
1579bae1 | 145 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
0125cdf2 | 146 | static bfd_boolean notice |
1579bae1 | 147 | (struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma); |
0125cdf2 NC |
148 | |
149 | static struct bfd_link_callbacks link_callbacks = | |
150 | { | |
252b5132 RH |
151 | add_archive_element, |
152 | multiple_definition, | |
153 | multiple_common, | |
154 | add_to_set, | |
155 | constructor_callback, | |
156 | warning_callback, | |
157 | undefined_symbol, | |
158 | reloc_overflow, | |
159 | reloc_dangerous, | |
160 | unattached_reloc, | |
d003868e | 161 | notice |
252b5132 RH |
162 | }; |
163 | ||
164 | struct bfd_link_info link_info; | |
165 | \f | |
166 | static void | |
1579bae1 | 167 | remove_output (void) |
252b5132 | 168 | { |
6d5e62f8 | 169 | if (output_filename) |
252b5132 | 170 | { |
c92c35e7 AC |
171 | if (output_bfd) |
172 | bfd_cache_close (output_bfd); | |
252b5132 RH |
173 | if (delete_output_file_on_failure) |
174 | unlink (output_filename); | |
175 | } | |
176 | } | |
177 | ||
178 | int | |
1579bae1 | 179 | main (int argc, char **argv) |
252b5132 RH |
180 | { |
181 | char *emulation; | |
182 | long start_time = get_run_time (); | |
183 | ||
184 | #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) | |
185 | setlocale (LC_MESSAGES, ""); | |
3882b010 L |
186 | #endif |
187 | #if defined (HAVE_SETLOCALE) | |
188 | setlocale (LC_CTYPE, ""); | |
252b5132 RH |
189 | #endif |
190 | bindtextdomain (PACKAGE, LOCALEDIR); | |
191 | textdomain (PACKAGE); | |
192 | ||
193 | program_name = argv[0]; | |
194 | xmalloc_set_program_name (program_name); | |
195 | ||
196 | START_PROGRESS (program_name, 0); | |
197 | ||
198 | bfd_init (); | |
199 | ||
200 | bfd_set_error_program_name (program_name); | |
201 | ||
202 | xatexit (remove_output); | |
203 | ||
9c8ebd6a DJ |
204 | #ifdef TARGET_SYSTEM_ROOT_RELOCATABLE |
205 | ld_sysroot = make_relative_prefix (program_name, BINDIR, | |
206 | TARGET_SYSTEM_ROOT); | |
0125cdf2 | 207 | |
9c8ebd6a DJ |
208 | if (ld_sysroot) |
209 | { | |
210 | struct stat s; | |
211 | int res = stat (ld_sysroot, &s) == 0 && S_ISDIR (s.st_mode); | |
0125cdf2 | 212 | |
9c8ebd6a DJ |
213 | if (!res) |
214 | { | |
215 | free (ld_sysroot); | |
0125cdf2 | 216 | ld_sysroot = NULL; |
9c8ebd6a DJ |
217 | } |
218 | } | |
0125cdf2 NC |
219 | |
220 | if (! ld_sysroot) | |
221 | { | |
222 | ld_sysroot = make_relative_prefix (program_name, TOOLBINDIR, | |
223 | TARGET_SYSTEM_ROOT); | |
224 | ||
225 | if (ld_sysroot) | |
226 | { | |
227 | struct stat s; | |
228 | int res = stat (ld_sysroot, &s) == 0 && S_ISDIR (s.st_mode); | |
229 | ||
230 | if (!res) | |
231 | { | |
232 | free (ld_sysroot); | |
233 | ld_sysroot = NULL; | |
234 | } | |
235 | } | |
236 | } | |
237 | ||
238 | if (! ld_sysroot) | |
9c8ebd6a | 239 | #endif |
0125cdf2 | 240 | ld_sysroot = TARGET_SYSTEM_ROOT; |
9c8ebd6a | 241 | |
3fe38064 NC |
242 | if (ld_sysroot && *ld_sysroot) |
243 | ld_canon_sysroot = lrealpath (ld_sysroot); | |
244 | ||
245 | if (ld_canon_sysroot) | |
246 | ld_canon_sysroot_len = strlen (ld_canon_sysroot); | |
247 | else | |
248 | ld_canon_sysroot_len = -1; | |
249 | ||
252b5132 RH |
250 | /* Set the default BFD target based on the configured target. Doing |
251 | this permits the linker to be configured for a particular target, | |
252 | and linked against a shared BFD library which was configured for | |
253 | a different target. The macro TARGET is defined by Makefile. */ | |
254 | if (! bfd_set_default_target (TARGET)) | |
255 | { | |
256 | einfo (_("%X%P: can't set BFD default target to `%s': %E\n"), TARGET); | |
257 | xexit (1); | |
258 | } | |
259 | ||
b47c4208 AM |
260 | #if YYDEBUG |
261 | { | |
262 | extern int yydebug; | |
263 | yydebug = 1; | |
264 | } | |
265 | #endif | |
266 | ||
252b5132 | 267 | /* Initialize the data about options. */ |
b34976b6 AM |
268 | trace_files = trace_file_tries = version_printed = FALSE; |
269 | whole_archive = FALSE; | |
270 | config.build_constructors = TRUE; | |
271 | config.dynamic_link = FALSE; | |
272 | config.has_shared = FALSE; | |
a854a4a7 AM |
273 | config.split_by_reloc = (unsigned) -1; |
274 | config.split_by_file = (bfd_size_type) -1; | |
2d643429 | 275 | config.hash_table_size = 0; |
b34976b6 AM |
276 | command_line.force_common_definition = FALSE; |
277 | command_line.inhibit_common_definition = FALSE; | |
252b5132 RH |
278 | command_line.interpreter = NULL; |
279 | command_line.rpath = NULL; | |
b34976b6 AM |
280 | command_line.warn_mismatch = TRUE; |
281 | command_line.check_section_addresses = TRUE; | |
312b768e | 282 | command_line.accept_unknown_input_arch = FALSE; |
35835446 | 283 | command_line.reduce_memory_overheads = FALSE; |
252b5132 | 284 | |
bcaa7b3e L |
285 | sort_section = none; |
286 | ||
252b5132 RH |
287 | /* We initialize DEMANGLING based on the environment variable |
288 | COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the | |
289 | output of the linker, unless COLLECT_NO_DEMANGLE is set in the | |
290 | environment. Acting the same way here lets us provide the same | |
291 | interface by default. */ | |
292 | demangling = getenv ("COLLECT_NO_DEMANGLE") == NULL; | |
293 | ||
1049f94e | 294 | link_info.relocatable = FALSE; |
b34976b6 | 295 | link_info.emitrelocations = FALSE; |
b5067602 | 296 | link_info.task_link = FALSE; |
b34976b6 | 297 | link_info.shared = FALSE; |
36af4a4e JJ |
298 | link_info.pie = FALSE; |
299 | link_info.executable = FALSE; | |
b34976b6 AM |
300 | link_info.symbolic = FALSE; |
301 | link_info.export_dynamic = FALSE; | |
302 | link_info.static_link = FALSE; | |
303 | link_info.traditional_format = FALSE; | |
304 | link_info.optimize = FALSE; | |
560e09e9 NC |
305 | link_info.unresolved_syms_in_objects = RM_NOT_YET_SET; |
306 | link_info.unresolved_syms_in_shared_libs = RM_NOT_YET_SET; | |
b34976b6 AM |
307 | link_info.allow_multiple_definition = FALSE; |
308 | link_info.allow_undefined_version = TRUE; | |
b5067602 AM |
309 | link_info.keep_memory = TRUE; |
310 | link_info.notice_all = FALSE; | |
311 | link_info.nocopyreloc = FALSE; | |
312 | link_info.new_dtags = FALSE; | |
313 | link_info.combreloc = TRUE; | |
314 | link_info.eh_frame_hdr = FALSE; | |
8c37241b | 315 | link_info.relro = FALSE; |
d5cd3933 | 316 | link_info.strip_discarded = TRUE; |
252b5132 | 317 | link_info.strip = strip_none; |
f5fa8ca2 | 318 | link_info.discard = discard_sec_merge; |
b5067602 AM |
319 | link_info.common_skip_ar_aymbols = bfd_link_common_skip_none; |
320 | link_info.callbacks = &link_callbacks; | |
252b5132 RH |
321 | link_info.hash = NULL; |
322 | link_info.keep_hash = NULL; | |
252b5132 RH |
323 | link_info.notice_hash = NULL; |
324 | link_info.wrap_hash = NULL; | |
b5067602 AM |
325 | link_info.input_bfds = NULL; |
326 | link_info.create_object_symbols_section = NULL; | |
327 | link_info.gc_sym_list = NULL; | |
328 | link_info.base_file = NULL; | |
3dbf70a2 MM |
329 | /* SVR4 linkers seem to set DT_INIT and DT_FINI based on magic _init |
330 | and _fini symbols. We are compatible. */ | |
331 | link_info.init_function = "_init"; | |
332 | link_info.fini_function = "_fini"; | |
e0076ab3 | 333 | link_info.pei386_auto_import = -1; |
b34976b6 | 334 | link_info.pei386_runtime_pseudo_reloc = FALSE; |
db6751f2 | 335 | link_info.spare_dynamic_tags = 5; |
1579bae1 AM |
336 | link_info.flags = 0; |
337 | link_info.flags_1 = 0; | |
d9c458fc | 338 | link_info.need_relax_finalize = FALSE; |
8fdd7217 | 339 | link_info.warn_shared_textrel = FALSE; |
3dbf70a2 | 340 | |
252b5132 RH |
341 | ldfile_add_arch (""); |
342 | ||
b34976b6 AM |
343 | config.make_executable = TRUE; |
344 | force_make_executable = FALSE; | |
345 | config.magic_demand_paged = TRUE; | |
346 | config.text_read_only = TRUE; | |
252b5132 RH |
347 | |
348 | emulation = get_emulation (argc, argv); | |
349 | ldemul_choose_mode (emulation); | |
742aeb63 | 350 | default_target = ldemul_choose_target (argc, argv); |
252b5132 RH |
351 | lang_init (); |
352 | ldemul_before_parse (); | |
b34976b6 | 353 | lang_has_input_file = FALSE; |
252b5132 RH |
354 | parse_args (argc, argv); |
355 | ||
2d643429 NC |
356 | if (config.hash_table_size != 0) |
357 | bfd_hash_set_default_size (config.hash_table_size); | |
358 | ||
252b5132 RH |
359 | ldemul_set_symbols (); |
360 | ||
1049f94e | 361 | if (link_info.relocatable) |
252b5132 RH |
362 | { |
363 | if (command_line.gc_sections) | |
364 | einfo ("%P%F: --gc-sections and -r may not be used together\n"); | |
252b5132 RH |
365 | else if (command_line.relax) |
366 | einfo (_("%P%F: --relax and -r may not be used together\n")); | |
367 | if (link_info.shared) | |
368 | einfo (_("%P%F: -r and -shared may not be used together\n")); | |
369 | } | |
370 | ||
7333607e JJ |
371 | if (! link_info.shared) |
372 | { | |
373 | if (command_line.filter_shlib) | |
e97cb84f | 374 | einfo (_("%P%F: -F may not be used without -shared\n")); |
7333607e | 375 | if (command_line.auxiliary_filters) |
e97cb84f | 376 | einfo (_("%P%F: -f may not be used without -shared\n")); |
7333607e JJ |
377 | } |
378 | ||
36af4a4e JJ |
379 | if (! link_info.shared || link_info.pie) |
380 | link_info.executable = TRUE; | |
381 | ||
252b5132 RH |
382 | /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I |
383 | don't see how else this can be handled, since in this case we | |
384 | must preserve all externally visible symbols. */ | |
1049f94e | 385 | if (link_info.relocatable && link_info.strip == strip_all) |
252b5132 RH |
386 | { |
387 | link_info.strip = strip_debugger; | |
f5fa8ca2 | 388 | if (link_info.discard == discard_sec_merge) |
252b5132 RH |
389 | link_info.discard = discard_all; |
390 | } | |
391 | ||
392 | /* This essentially adds another -L directory so this must be done after | |
393 | the -L's in argv have been processed. */ | |
394 | set_scripts_dir (); | |
395 | ||
b9a8de1e NC |
396 | /* If we have not already opened and parsed a linker script |
397 | read the emulation's appropriate default script. */ | |
b90e1c6f | 398 | if (saved_script_handle == NULL) |
252b5132 | 399 | { |
252b5132 | 400 | int isfile; |
b7a26f91 | 401 | char *s = ldemul_get_script (&isfile); |
252b5132 RH |
402 | |
403 | if (isfile) | |
404 | ldfile_open_command_file (s); | |
405 | else | |
b7a26f91 | 406 | { |
252b5132 RH |
407 | lex_string = s; |
408 | lex_redirect (s); | |
409 | } | |
410 | parser_input = input_script; | |
411 | yyparse (); | |
412 | lex_string = NULL; | |
413 | } | |
414 | ||
b9a8de1e NC |
415 | if (trace_file_tries) |
416 | { | |
9cb61eab AM |
417 | if (saved_script_handle) |
418 | info_msg (_("using external linker script:")); | |
419 | else | |
420 | info_msg (_("using internal linker script:")); | |
421 | info_msg ("\n==================================================\n"); | |
b9a8de1e NC |
422 | |
423 | if (saved_script_handle) | |
424 | { | |
74699268 | 425 | static const int ld_bufsz = 8193; |
b9a8de1e | 426 | size_t n; |
74699268 | 427 | char *buf = xmalloc (ld_bufsz); |
b9a8de1e NC |
428 | |
429 | rewind (saved_script_handle); | |
74699268 | 430 | while ((n = fread (buf, 1, ld_bufsz - 1, saved_script_handle)) > 0) |
b9a8de1e | 431 | { |
b7a26f91 | 432 | buf[n] = 0; |
b9a8de1e NC |
433 | info_msg (buf); |
434 | } | |
435 | rewind (saved_script_handle); | |
436 | free (buf); | |
437 | } | |
438 | else | |
439 | { | |
440 | int isfile; | |
441 | ||
b7a26f91 | 442 | info_msg (ldemul_get_script (&isfile)); |
b9a8de1e | 443 | } |
b7a26f91 | 444 | |
b9a8de1e NC |
445 | info_msg ("\n==================================================\n"); |
446 | } | |
447 | ||
252b5132 RH |
448 | lang_final (); |
449 | ||
b34976b6 | 450 | if (!lang_has_input_file) |
252b5132 RH |
451 | { |
452 | if (version_printed) | |
453 | xexit (0); | |
454 | einfo (_("%P%F: no input files\n")); | |
455 | } | |
456 | ||
457 | if (trace_files) | |
0125cdf2 | 458 | info_msg (_("%P: mode %s\n"), emulation); |
252b5132 RH |
459 | |
460 | ldemul_after_parse (); | |
461 | ||
252b5132 RH |
462 | if (config.map_filename) |
463 | { | |
464 | if (strcmp (config.map_filename, "-") == 0) | |
465 | { | |
466 | config.map_file = stdout; | |
467 | } | |
468 | else | |
469 | { | |
470 | config.map_file = fopen (config.map_filename, FOPEN_WT); | |
471 | if (config.map_file == (FILE *) NULL) | |
472 | { | |
473 | bfd_set_error (bfd_error_system_call); | |
474 | einfo (_("%P%F: cannot open map file %s: %E\n"), | |
475 | config.map_filename); | |
476 | } | |
477 | } | |
478 | } | |
479 | ||
252b5132 RH |
480 | lang_process (); |
481 | ||
482 | /* Print error messages for any missing symbols, for any warning | |
6d5e62f8 | 483 | symbols, and possibly multiple definitions. */ |
1049f94e | 484 | if (link_info.relocatable) |
252b5132 RH |
485 | output_bfd->flags &= ~EXEC_P; |
486 | else | |
487 | output_bfd->flags |= EXEC_P; | |
488 | ||
489 | ldwrite (); | |
490 | ||
491 | if (config.map_file != NULL) | |
492 | lang_map (); | |
493 | if (command_line.cref) | |
494 | output_cref (config.map_file != NULL ? config.map_file : stdout); | |
495 | if (nocrossref_list != NULL) | |
496 | check_nocrossrefs (); | |
497 | ||
1049f94e | 498 | /* Even if we're producing relocatable output, some non-fatal errors should |
252b5132 | 499 | be reported in the exit status. (What non-fatal errors, if any, do we |
1049f94e | 500 | want to ignore for relocatable output?) */ |
b34976b6 | 501 | if (!config.make_executable && !force_make_executable) |
252b5132 | 502 | { |
b34976b6 | 503 | if (trace_files) |
0125cdf2 NC |
504 | einfo (_("%P: link errors found, deleting executable `%s'\n"), |
505 | output_filename); | |
252b5132 RH |
506 | |
507 | /* The file will be removed by remove_output. */ | |
252b5132 RH |
508 | xexit (1); |
509 | } | |
510 | else | |
511 | { | |
512 | if (! bfd_close (output_bfd)) | |
513 | einfo (_("%F%B: final close failed: %E\n"), output_bfd); | |
514 | ||
515 | /* If the --force-exe-suffix is enabled, and we're making an | |
6d5e62f8 KH |
516 | executable file and it doesn't end in .exe, copy it to one |
517 | which does. */ | |
1049f94e | 518 | if (! link_info.relocatable && command_line.force_exe_suffix) |
252b5132 RH |
519 | { |
520 | int len = strlen (output_filename); | |
0125cdf2 | 521 | |
6d5e62f8 | 522 | if (len < 4 |
252b5132 RH |
523 | || (strcasecmp (output_filename + len - 4, ".exe") != 0 |
524 | && strcasecmp (output_filename + len - 4, ".dll") != 0)) | |
525 | { | |
526 | FILE *src; | |
527 | FILE *dst; | |
528 | const int bsize = 4096; | |
529 | char *buf = xmalloc (bsize); | |
530 | int l; | |
531 | char *dst_name = xmalloc (len + 5); | |
0125cdf2 | 532 | |
252b5132 RH |
533 | strcpy (dst_name, output_filename); |
534 | strcat (dst_name, ".exe"); | |
535 | src = fopen (output_filename, FOPEN_RB); | |
536 | dst = fopen (dst_name, FOPEN_WB); | |
537 | ||
538 | if (!src) | |
1579bae1 AM |
539 | einfo (_("%X%P: unable to open for source of copy `%s'\n"), |
540 | output_filename); | |
252b5132 | 541 | if (!dst) |
1579bae1 AM |
542 | einfo (_("%X%P: unable to open for destination of copy `%s'\n"), |
543 | dst_name); | |
252b5132 RH |
544 | while ((l = fread (buf, 1, bsize, src)) > 0) |
545 | { | |
546 | int done = fwrite (buf, 1, l, dst); | |
0125cdf2 | 547 | |
252b5132 | 548 | if (done != l) |
0125cdf2 | 549 | einfo (_("%P: Error writing file `%s'\n"), dst_name); |
252b5132 | 550 | } |
0125cdf2 | 551 | |
252b5132 RH |
552 | fclose (src); |
553 | if (fclose (dst) == EOF) | |
0125cdf2 | 554 | einfo (_("%P: Error closing file `%s'\n"), dst_name); |
252b5132 RH |
555 | free (dst_name); |
556 | free (buf); | |
557 | } | |
558 | } | |
559 | } | |
560 | ||
561 | END_PROGRESS (program_name); | |
562 | ||
563 | if (config.stats) | |
564 | { | |
565 | #ifdef HAVE_SBRK | |
1579bae1 | 566 | char *lim = sbrk (0); |
252b5132 RH |
567 | #endif |
568 | long run_time = get_run_time () - start_time; | |
569 | ||
570 | fprintf (stderr, _("%s: total time in link: %ld.%06ld\n"), | |
571 | program_name, run_time / 1000000, run_time % 1000000); | |
572 | #ifdef HAVE_SBRK | |
573 | fprintf (stderr, _("%s: data size %ld\n"), program_name, | |
574 | (long) (lim - (char *) &environ)); | |
575 | #endif | |
576 | } | |
577 | ||
578 | /* Prevent remove_output from doing anything, after a successful link. */ | |
579 | output_filename = NULL; | |
580 | ||
581 | xexit (0); | |
582 | return 0; | |
583 | } | |
584 | ||
585 | /* We need to find any explicitly given emulation in order to initialize the | |
586 | state that's needed by the lex&yacc argument parser (parse_args). */ | |
587 | ||
588 | static char * | |
1579bae1 | 589 | get_emulation (int argc, char **argv) |
252b5132 RH |
590 | { |
591 | char *emulation; | |
592 | int i; | |
593 | ||
594 | emulation = getenv (EMULATION_ENVIRON); | |
595 | if (emulation == NULL) | |
596 | emulation = DEFAULT_EMULATION; | |
597 | ||
598 | for (i = 1; i < argc; i++) | |
599 | { | |
600 | if (!strncmp (argv[i], "-m", 2)) | |
601 | { | |
602 | if (argv[i][2] == '\0') | |
603 | { | |
604 | /* -m EMUL */ | |
605 | if (i < argc - 1) | |
606 | { | |
607 | emulation = argv[i + 1]; | |
608 | i++; | |
609 | } | |
610 | else | |
0125cdf2 | 611 | einfo (_("%P%F: missing argument to -m\n")); |
252b5132 RH |
612 | } |
613 | else if (strcmp (argv[i], "-mips1") == 0 | |
614 | || strcmp (argv[i], "-mips2") == 0 | |
615 | || strcmp (argv[i], "-mips3") == 0 | |
d1cf510e | 616 | || strcmp (argv[i], "-mips4") == 0 |
6f33421c CD |
617 | || strcmp (argv[i], "-mips5") == 0 |
618 | || strcmp (argv[i], "-mips32") == 0 | |
619 | || strcmp (argv[i], "-mips32r2") == 0 | |
5f74bc13 CD |
620 | || strcmp (argv[i], "-mips64") == 0 |
621 | || strcmp (argv[i], "-mips64r2") == 0) | |
252b5132 | 622 | { |
31d677f9 | 623 | /* FIXME: The arguments -mips1, -mips2, -mips3, etc. are |
252b5132 RH |
624 | passed to the linker by some MIPS compilers. They |
625 | generally tell the linker to use a slightly different | |
626 | library path. Perhaps someday these should be | |
627 | implemented as emulations; until then, we just ignore | |
628 | the arguments and hope that nobody ever creates | |
629 | emulations named ips1, ips2 or ips3. */ | |
630 | } | |
631 | else if (strcmp (argv[i], "-m486") == 0) | |
632 | { | |
633 | /* FIXME: The argument -m486 is passed to the linker on | |
634 | some Linux systems. Hope that nobody creates an | |
635 | emulation named 486. */ | |
636 | } | |
637 | else | |
638 | { | |
639 | /* -mEMUL */ | |
640 | emulation = &argv[i][2]; | |
641 | } | |
642 | } | |
643 | } | |
644 | ||
645 | return emulation; | |
646 | } | |
647 | ||
648 | /* If directory DIR contains an "ldscripts" subdirectory, | |
b34976b6 AM |
649 | add DIR to the library search path and return TRUE, |
650 | else return FALSE. */ | |
252b5132 | 651 | |
b34976b6 | 652 | static bfd_boolean |
1579bae1 | 653 | check_for_scripts_dir (char *dir) |
252b5132 RH |
654 | { |
655 | size_t dirlen; | |
656 | char *buf; | |
657 | struct stat s; | |
b34976b6 | 658 | bfd_boolean res; |
252b5132 RH |
659 | |
660 | dirlen = strlen (dir); | |
661 | /* sizeof counts the terminating NUL. */ | |
1579bae1 | 662 | buf = xmalloc (dirlen + sizeof ("/ldscripts")); |
252b5132 RH |
663 | sprintf (buf, "%s/ldscripts", dir); |
664 | ||
665 | res = stat (buf, &s) == 0 && S_ISDIR (s.st_mode); | |
666 | free (buf); | |
667 | if (res) | |
b34976b6 | 668 | ldfile_add_library_path (dir, FALSE); |
252b5132 RH |
669 | return res; |
670 | } | |
671 | ||
672 | /* Set the default directory for finding script files. | |
673 | Libraries will be searched for here too, but that's ok. | |
674 | We look for the "ldscripts" directory in: | |
675 | ||
cdc0d45e DJ |
676 | SCRIPTDIR (passed from Makefile) |
677 | (adjusted according to the current location of the binary) | |
252b5132 RH |
678 | SCRIPTDIR (passed from Makefile) |
679 | the dir where this program is (for using it from the build tree) | |
cdc0d45e | 680 | the dir where this program is/../lib |
0125cdf2 | 681 | (for installing the tool suite elsewhere). */ |
252b5132 RH |
682 | |
683 | static void | |
1579bae1 | 684 | set_scripts_dir (void) |
252b5132 RH |
685 | { |
686 | char *end, *dir; | |
687 | size_t dirlen; | |
5ed6aba4 | 688 | bfd_boolean found; |
252b5132 | 689 | |
cdc0d45e | 690 | dir = make_relative_prefix (program_name, BINDIR, SCRIPTDIR); |
cdc0d45e | 691 | if (dir) |
5ed6aba4 NC |
692 | { |
693 | found = check_for_scripts_dir (dir); | |
694 | free (dir); | |
695 | if (found) | |
696 | return; | |
697 | } | |
cdc0d45e | 698 | |
4ca1b790 | 699 | dir = make_relative_prefix (program_name, TOOLBINDIR, SCRIPTDIR); |
4ca1b790 | 700 | if (dir) |
5ed6aba4 NC |
701 | { |
702 | found = check_for_scripts_dir (dir); | |
703 | free (dir); | |
704 | if (found) | |
705 | return; | |
706 | } | |
4ca1b790 | 707 | |
252b5132 | 708 | if (check_for_scripts_dir (SCRIPTDIR)) |
6d5e62f8 KH |
709 | /* We've been installed normally. */ |
710 | return; | |
252b5132 RH |
711 | |
712 | /* Look for "ldscripts" in the dir where our binary is. */ | |
713 | end = strrchr (program_name, '/'); | |
5af11cab AM |
714 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
715 | { | |
716 | /* We could have \foo\bar, or /foo\bar. */ | |
717 | char *bslash = strrchr (program_name, '\\'); | |
0125cdf2 | 718 | |
2ab47eed | 719 | if (end == NULL || (bslash != NULL && bslash > end)) |
5af11cab AM |
720 | end = bslash; |
721 | } | |
722 | #endif | |
252b5132 RH |
723 | |
724 | if (end == NULL) | |
0125cdf2 NC |
725 | /* Don't look for ldscripts in the current directory. There is |
726 | too much potential for confusion. */ | |
727 | return; | |
252b5132 RH |
728 | |
729 | dirlen = end - program_name; | |
730 | /* Make a copy of program_name in dir. | |
731 | Leave room for later "/../lib". */ | |
1579bae1 | 732 | dir = xmalloc (dirlen + 8); |
252b5132 RH |
733 | strncpy (dir, program_name, dirlen); |
734 | dir[dirlen] = '\0'; | |
735 | ||
736 | if (check_for_scripts_dir (dir)) | |
5ed6aba4 NC |
737 | { |
738 | free (dir); | |
739 | return; | |
740 | } | |
252b5132 RH |
741 | |
742 | /* Look for "ldscripts" in <the dir where our binary is>/../lib. */ | |
743 | strcpy (dir + dirlen, "/../lib"); | |
5ed6aba4 | 744 | check_for_scripts_dir (dir); |
6d5e62f8 | 745 | free (dir); |
252b5132 RH |
746 | } |
747 | ||
748 | void | |
1579bae1 | 749 | add_ysym (const char *name) |
252b5132 | 750 | { |
1579bae1 | 751 | if (link_info.notice_hash == NULL) |
252b5132 | 752 | { |
1579bae1 | 753 | link_info.notice_hash = xmalloc (sizeof (struct bfd_hash_table)); |
252b5132 RH |
754 | if (! bfd_hash_table_init_n (link_info.notice_hash, |
755 | bfd_hash_newfunc, | |
756 | 61)) | |
757 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
6d5e62f8 | 758 | } |
252b5132 | 759 | |
1579bae1 | 760 | if (bfd_hash_lookup (link_info.notice_hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
761 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); |
762 | } | |
763 | ||
764 | /* Record a symbol to be wrapped, from the --wrap option. */ | |
765 | ||
766 | void | |
1579bae1 | 767 | add_wrap (const char *name) |
252b5132 RH |
768 | { |
769 | if (link_info.wrap_hash == NULL) | |
770 | { | |
1579bae1 | 771 | link_info.wrap_hash = xmalloc (sizeof (struct bfd_hash_table)); |
252b5132 RH |
772 | if (! bfd_hash_table_init_n (link_info.wrap_hash, |
773 | bfd_hash_newfunc, | |
774 | 61)) | |
775 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
776 | } | |
0125cdf2 | 777 | |
b34976b6 | 778 | if (bfd_hash_lookup (link_info.wrap_hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
779 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); |
780 | } | |
781 | ||
782 | /* Handle the -retain-symbols-file option. */ | |
783 | ||
784 | void | |
1579bae1 | 785 | add_keepsyms_file (const char *filename) |
252b5132 RH |
786 | { |
787 | FILE *file; | |
788 | char *buf; | |
789 | size_t bufsize; | |
790 | int c; | |
791 | ||
792 | if (link_info.strip == strip_some) | |
793 | einfo (_("%X%P: error: duplicate retain-symbols-file\n")); | |
794 | ||
795 | file = fopen (filename, "r"); | |
1579bae1 | 796 | if (file == NULL) |
252b5132 RH |
797 | { |
798 | bfd_set_error (bfd_error_system_call); | |
799 | einfo ("%X%P: %s: %E\n", filename); | |
800 | return; | |
801 | } | |
802 | ||
1579bae1 | 803 | link_info.keep_hash = xmalloc (sizeof (struct bfd_hash_table)); |
252b5132 RH |
804 | if (! bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc)) |
805 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
806 | ||
807 | bufsize = 100; | |
1579bae1 | 808 | buf = xmalloc (bufsize); |
252b5132 RH |
809 | |
810 | c = getc (file); | |
811 | while (c != EOF) | |
812 | { | |
3882b010 | 813 | while (ISSPACE (c)) |
252b5132 RH |
814 | c = getc (file); |
815 | ||
816 | if (c != EOF) | |
817 | { | |
818 | size_t len = 0; | |
819 | ||
3882b010 | 820 | while (! ISSPACE (c) && c != EOF) |
252b5132 RH |
821 | { |
822 | buf[len] = c; | |
823 | ++len; | |
824 | if (len >= bufsize) | |
825 | { | |
826 | bufsize *= 2; | |
827 | buf = xrealloc (buf, bufsize); | |
828 | } | |
829 | c = getc (file); | |
830 | } | |
831 | ||
832 | buf[len] = '\0'; | |
833 | ||
1579bae1 | 834 | if (bfd_hash_lookup (link_info.keep_hash, buf, TRUE, TRUE) == NULL) |
252b5132 RH |
835 | einfo (_("%P%F: bfd_hash_lookup for insertion failed: %E\n")); |
836 | } | |
837 | } | |
838 | ||
839 | if (link_info.strip != strip_none) | |
840 | einfo (_("%P: `-retain-symbols-file' overrides `-s' and `-S'\n")); | |
841 | ||
5ed6aba4 | 842 | free (buf); |
252b5132 RH |
843 | link_info.strip = strip_some; |
844 | } | |
845 | \f | |
846 | /* Callbacks from the BFD linker routines. */ | |
847 | ||
848 | /* This is called when BFD has decided to include an archive member in | |
849 | a link. */ | |
850 | ||
b34976b6 | 851 | static bfd_boolean |
1579bae1 AM |
852 | add_archive_element (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
853 | bfd *abfd, | |
854 | const char *name) | |
252b5132 RH |
855 | { |
856 | lang_input_statement_type *input; | |
857 | ||
1579bae1 | 858 | input = xmalloc (sizeof (lang_input_statement_type)); |
252b5132 RH |
859 | input->filename = abfd->filename; |
860 | input->local_sym_name = abfd->filename; | |
861 | input->the_bfd = abfd; | |
862 | input->asymbols = NULL; | |
863 | input->next = NULL; | |
b34976b6 AM |
864 | input->just_syms_flag = FALSE; |
865 | input->loaded = FALSE; | |
866 | input->search_dirs_flag = FALSE; | |
252b5132 RH |
867 | |
868 | /* FIXME: The following fields are not set: header.next, | |
869 | header.type, closed, passive_position, symbol_count, | |
870 | next_real_file, is_archive, target, real. This bit of code is | |
871 | from the old decode_library_subfile function. I don't know | |
872 | whether any of those fields matters. */ | |
873 | ||
874 | ldlang_add_file (input); | |
875 | ||
1579bae1 | 876 | if (config.map_file != NULL) |
252b5132 | 877 | { |
b34976b6 | 878 | static bfd_boolean header_printed; |
252b5132 RH |
879 | struct bfd_link_hash_entry *h; |
880 | bfd *from; | |
881 | int len; | |
882 | ||
b34976b6 | 883 | h = bfd_link_hash_lookup (link_info.hash, name, FALSE, FALSE, TRUE); |
252b5132 RH |
884 | |
885 | if (h == NULL) | |
886 | from = NULL; | |
887 | else | |
888 | { | |
889 | switch (h->type) | |
890 | { | |
891 | default: | |
892 | from = NULL; | |
893 | break; | |
894 | ||
895 | case bfd_link_hash_defined: | |
896 | case bfd_link_hash_defweak: | |
897 | from = h->u.def.section->owner; | |
898 | break; | |
899 | ||
900 | case bfd_link_hash_undefined: | |
901 | case bfd_link_hash_undefweak: | |
902 | from = h->u.undef.abfd; | |
903 | break; | |
904 | ||
905 | case bfd_link_hash_common: | |
906 | from = h->u.c.p->section->owner; | |
907 | break; | |
908 | } | |
909 | } | |
910 | ||
911 | if (! header_printed) | |
912 | { | |
913 | char buf[100]; | |
914 | ||
e3c8793a | 915 | sprintf (buf, _("Archive member included because of file (symbol)\n\n")); |
252b5132 | 916 | minfo ("%s", buf); |
b34976b6 | 917 | header_printed = TRUE; |
252b5132 RH |
918 | } |
919 | ||
920 | if (bfd_my_archive (abfd) == NULL) | |
921 | { | |
922 | minfo ("%s", bfd_get_filename (abfd)); | |
923 | len = strlen (bfd_get_filename (abfd)); | |
924 | } | |
925 | else | |
926 | { | |
927 | minfo ("%s(%s)", bfd_get_filename (bfd_my_archive (abfd)), | |
928 | bfd_get_filename (abfd)); | |
929 | len = (strlen (bfd_get_filename (bfd_my_archive (abfd))) | |
930 | + strlen (bfd_get_filename (abfd)) | |
931 | + 2); | |
932 | } | |
933 | ||
934 | if (len >= 29) | |
935 | { | |
936 | print_nl (); | |
937 | len = 0; | |
938 | } | |
939 | while (len < 30) | |
940 | { | |
941 | print_space (); | |
942 | ++len; | |
943 | } | |
944 | ||
945 | if (from != NULL) | |
946 | minfo ("%B ", from); | |
947 | if (h != NULL) | |
948 | minfo ("(%T)\n", h->root.string); | |
949 | else | |
950 | minfo ("(%s)\n", name); | |
951 | } | |
952 | ||
953 | if (trace_files || trace_file_tries) | |
954 | info_msg ("%I\n", input); | |
955 | ||
b34976b6 | 956 | return TRUE; |
252b5132 RH |
957 | } |
958 | ||
959 | /* This is called when BFD has discovered a symbol which is defined | |
960 | multiple times. */ | |
961 | ||
b34976b6 | 962 | static bfd_boolean |
1579bae1 AM |
963 | multiple_definition (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
964 | const char *name, | |
965 | bfd *obfd, | |
966 | asection *osec, | |
967 | bfd_vma oval, | |
968 | bfd *nbfd, | |
969 | asection *nsec, | |
970 | bfd_vma nval) | |
252b5132 RH |
971 | { |
972 | /* If either section has the output_section field set to | |
973 | bfd_abs_section_ptr, it means that the section is being | |
974 | discarded, and this is not really a multiple definition at all. | |
975 | FIXME: It would be cleaner to somehow ignore symbols defined in | |
976 | sections which are being discarded. */ | |
977 | if ((osec->output_section != NULL | |
978 | && ! bfd_is_abs_section (osec) | |
979 | && bfd_is_abs_section (osec->output_section)) | |
980 | || (nsec->output_section != NULL | |
981 | && ! bfd_is_abs_section (nsec) | |
982 | && bfd_is_abs_section (nsec->output_section))) | |
b34976b6 | 983 | return TRUE; |
252b5132 RH |
984 | |
985 | einfo (_("%X%C: multiple definition of `%T'\n"), | |
986 | nbfd, nsec, nval, name); | |
1579bae1 | 987 | if (obfd != NULL) |
252b5132 | 988 | einfo (_("%D: first defined here\n"), obfd, osec, oval); |
9b14b192 NC |
989 | |
990 | if (command_line.relax) | |
991 | { | |
992 | einfo (_("%P: Disabling relaxation: it will not work with multiple definitions\n")); | |
993 | command_line.relax = 0; | |
994 | } | |
6d5e62f8 | 995 | |
b34976b6 | 996 | return TRUE; |
252b5132 RH |
997 | } |
998 | ||
999 | /* This is called when there is a definition of a common symbol, or | |
1000 | when a common symbol is found for a symbol that is already defined, | |
1001 | or when two common symbols are found. We only do something if | |
1002 | -warn-common was used. */ | |
1003 | ||
b34976b6 | 1004 | static bfd_boolean |
1579bae1 AM |
1005 | multiple_common (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1006 | const char *name, | |
1007 | bfd *obfd, | |
1008 | enum bfd_link_hash_type otype, | |
1009 | bfd_vma osize, | |
1010 | bfd *nbfd, | |
1011 | enum bfd_link_hash_type ntype, | |
1012 | bfd_vma nsize) | |
252b5132 RH |
1013 | { |
1014 | if (! config.warn_common) | |
b34976b6 | 1015 | return TRUE; |
252b5132 RH |
1016 | |
1017 | if (ntype == bfd_link_hash_defined | |
1018 | || ntype == bfd_link_hash_defweak | |
1019 | || ntype == bfd_link_hash_indirect) | |
1020 | { | |
1021 | ASSERT (otype == bfd_link_hash_common); | |
1022 | einfo (_("%B: warning: definition of `%T' overriding common\n"), | |
1023 | nbfd, name); | |
1024 | if (obfd != NULL) | |
1025 | einfo (_("%B: warning: common is here\n"), obfd); | |
1026 | } | |
1027 | else if (otype == bfd_link_hash_defined | |
1028 | || otype == bfd_link_hash_defweak | |
1029 | || otype == bfd_link_hash_indirect) | |
1030 | { | |
1031 | ASSERT (ntype == bfd_link_hash_common); | |
1032 | einfo (_("%B: warning: common of `%T' overridden by definition\n"), | |
1033 | nbfd, name); | |
1034 | if (obfd != NULL) | |
1035 | einfo (_("%B: warning: defined here\n"), obfd); | |
1036 | } | |
1037 | else | |
1038 | { | |
1039 | ASSERT (otype == bfd_link_hash_common && ntype == bfd_link_hash_common); | |
1040 | if (osize > nsize) | |
1041 | { | |
1042 | einfo (_("%B: warning: common of `%T' overridden by larger common\n"), | |
1043 | nbfd, name); | |
1044 | if (obfd != NULL) | |
1045 | einfo (_("%B: warning: larger common is here\n"), obfd); | |
1046 | } | |
1047 | else if (nsize > osize) | |
1048 | { | |
1049 | einfo (_("%B: warning: common of `%T' overriding smaller common\n"), | |
1050 | nbfd, name); | |
1051 | if (obfd != NULL) | |
1052 | einfo (_("%B: warning: smaller common is here\n"), obfd); | |
1053 | } | |
1054 | else | |
1055 | { | |
1056 | einfo (_("%B: warning: multiple common of `%T'\n"), nbfd, name); | |
1057 | if (obfd != NULL) | |
1058 | einfo (_("%B: warning: previous common is here\n"), obfd); | |
1059 | } | |
1060 | } | |
1061 | ||
b34976b6 | 1062 | return TRUE; |
252b5132 RH |
1063 | } |
1064 | ||
1065 | /* This is called when BFD has discovered a set element. H is the | |
1066 | entry in the linker hash table for the set. SECTION and VALUE | |
1067 | represent a value which should be added to the set. */ | |
1068 | ||
b34976b6 | 1069 | static bfd_boolean |
1579bae1 AM |
1070 | add_to_set (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1071 | struct bfd_link_hash_entry *h, | |
1072 | bfd_reloc_code_real_type reloc, | |
1073 | bfd *abfd, | |
1074 | asection *section, | |
1075 | bfd_vma value) | |
252b5132 RH |
1076 | { |
1077 | if (config.warn_constructors) | |
1078 | einfo (_("%P: warning: global constructor %s used\n"), | |
1079 | h->root.string); | |
1080 | ||
1081 | if (! config.build_constructors) | |
b34976b6 | 1082 | return TRUE; |
252b5132 | 1083 | |
1579bae1 | 1084 | ldctor_add_set_entry (h, reloc, NULL, section, value); |
252b5132 RH |
1085 | |
1086 | if (h->type == bfd_link_hash_new) | |
1087 | { | |
1088 | h->type = bfd_link_hash_undefined; | |
1089 | h->u.undef.abfd = abfd; | |
1090 | /* We don't call bfd_link_add_undef to add this to the list of | |
1091 | undefined symbols because we are going to define it | |
1092 | ourselves. */ | |
1093 | } | |
1094 | ||
b34976b6 | 1095 | return TRUE; |
252b5132 RH |
1096 | } |
1097 | ||
1098 | /* This is called when BFD has discovered a constructor. This is only | |
1099 | called for some object file formats--those which do not handle | |
1100 | constructors in some more clever fashion. This is similar to | |
1101 | adding an element to a set, but less general. */ | |
1102 | ||
b34976b6 | 1103 | static bfd_boolean |
1579bae1 AM |
1104 | constructor_callback (struct bfd_link_info *info, |
1105 | bfd_boolean constructor, | |
1106 | const char *name, | |
1107 | bfd *abfd, | |
1108 | asection *section, | |
1109 | bfd_vma value) | |
252b5132 RH |
1110 | { |
1111 | char *s; | |
1112 | struct bfd_link_hash_entry *h; | |
1113 | char set_name[1 + sizeof "__CTOR_LIST__"]; | |
1114 | ||
1115 | if (config.warn_constructors) | |
1116 | einfo (_("%P: warning: global constructor %s used\n"), name); | |
1117 | ||
1118 | if (! config.build_constructors) | |
b34976b6 | 1119 | return TRUE; |
252b5132 RH |
1120 | |
1121 | /* Ensure that BFD_RELOC_CTOR exists now, so that we can give a | |
1122 | useful error message. */ | |
1123 | if (bfd_reloc_type_lookup (output_bfd, BFD_RELOC_CTOR) == NULL | |
1049f94e | 1124 | && (link_info.relocatable |
252b5132 RH |
1125 | || bfd_reloc_type_lookup (abfd, BFD_RELOC_CTOR) == NULL)) |
1126 | einfo (_("%P%F: BFD backend error: BFD_RELOC_CTOR unsupported\n")); | |
1127 | ||
1128 | s = set_name; | |
1129 | if (bfd_get_symbol_leading_char (abfd) != '\0') | |
1130 | *s++ = bfd_get_symbol_leading_char (abfd); | |
1131 | if (constructor) | |
1132 | strcpy (s, "__CTOR_LIST__"); | |
1133 | else | |
1134 | strcpy (s, "__DTOR_LIST__"); | |
1135 | ||
b34976b6 | 1136 | h = bfd_link_hash_lookup (info->hash, set_name, TRUE, TRUE, TRUE); |
252b5132 RH |
1137 | if (h == (struct bfd_link_hash_entry *) NULL) |
1138 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); | |
1139 | if (h->type == bfd_link_hash_new) | |
1140 | { | |
1141 | h->type = bfd_link_hash_undefined; | |
1142 | h->u.undef.abfd = abfd; | |
1143 | /* We don't call bfd_link_add_undef to add this to the list of | |
1144 | undefined symbols because we are going to define it | |
1145 | ourselves. */ | |
1146 | } | |
1147 | ||
1148 | ldctor_add_set_entry (h, BFD_RELOC_CTOR, name, section, value); | |
b34976b6 | 1149 | return TRUE; |
252b5132 RH |
1150 | } |
1151 | ||
1152 | /* A structure used by warning_callback to pass information through | |
1153 | bfd_map_over_sections. */ | |
1154 | ||
0125cdf2 NC |
1155 | struct warning_callback_info |
1156 | { | |
b34976b6 | 1157 | bfd_boolean found; |
252b5132 RH |
1158 | const char *warning; |
1159 | const char *symbol; | |
1160 | asymbol **asymbols; | |
1161 | }; | |
1162 | ||
1163 | /* This is called when there is a reference to a warning symbol. */ | |
1164 | ||
b34976b6 | 1165 | static bfd_boolean |
1579bae1 AM |
1166 | warning_callback (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1167 | const char *warning, | |
1168 | const char *symbol, | |
1169 | bfd *abfd, | |
1170 | asection *section, | |
1171 | bfd_vma address) | |
252b5132 RH |
1172 | { |
1173 | /* This is a hack to support warn_multiple_gp. FIXME: This should | |
1174 | have a cleaner interface, but what? */ | |
1175 | if (! config.warn_multiple_gp | |
1176 | && strcmp (warning, "using multiple gp values") == 0) | |
b34976b6 | 1177 | return TRUE; |
252b5132 RH |
1178 | |
1179 | if (section != NULL) | |
1180 | einfo ("%C: %s\n", abfd, section, address, warning); | |
1181 | else if (abfd == NULL) | |
1182 | einfo ("%P: %s\n", warning); | |
1183 | else if (symbol == NULL) | |
1184 | einfo ("%B: %s\n", abfd, warning); | |
1185 | else | |
1186 | { | |
1187 | lang_input_statement_type *entry; | |
1188 | asymbol **asymbols; | |
1189 | struct warning_callback_info info; | |
1190 | ||
1191 | /* Look through the relocs to see if we can find a plausible | |
1192 | address. */ | |
252b5132 RH |
1193 | entry = (lang_input_statement_type *) abfd->usrdata; |
1194 | if (entry != NULL && entry->asymbols != NULL) | |
1195 | asymbols = entry->asymbols; | |
1196 | else | |
1197 | { | |
1198 | long symsize; | |
1199 | long symbol_count; | |
1200 | ||
1201 | symsize = bfd_get_symtab_upper_bound (abfd); | |
1202 | if (symsize < 0) | |
1203 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
1579bae1 | 1204 | asymbols = xmalloc (symsize); |
252b5132 RH |
1205 | symbol_count = bfd_canonicalize_symtab (abfd, asymbols); |
1206 | if (symbol_count < 0) | |
1207 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
1208 | if (entry != NULL) | |
1209 | { | |
1210 | entry->asymbols = asymbols; | |
1211 | entry->symbol_count = symbol_count; | |
1212 | } | |
1213 | } | |
1214 | ||
b34976b6 | 1215 | info.found = FALSE; |
252b5132 RH |
1216 | info.warning = warning; |
1217 | info.symbol = symbol; | |
1218 | info.asymbols = asymbols; | |
1579bae1 | 1219 | bfd_map_over_sections (abfd, warning_find_reloc, &info); |
252b5132 RH |
1220 | |
1221 | if (! info.found) | |
1222 | einfo ("%B: %s\n", abfd, warning); | |
1223 | ||
1224 | if (entry == NULL) | |
1225 | free (asymbols); | |
1226 | } | |
1227 | ||
b34976b6 | 1228 | return TRUE; |
252b5132 RH |
1229 | } |
1230 | ||
1231 | /* This is called by warning_callback for each section. It checks the | |
1232 | relocs of the section to see if it can find a reference to the | |
1233 | symbol which triggered the warning. If it can, it uses the reloc | |
1234 | to give an error message with a file and line number. */ | |
1235 | ||
1236 | static void | |
1579bae1 | 1237 | warning_find_reloc (bfd *abfd, asection *sec, void *iarg) |
252b5132 | 1238 | { |
1579bae1 | 1239 | struct warning_callback_info *info = iarg; |
252b5132 RH |
1240 | long relsize; |
1241 | arelent **relpp; | |
1242 | long relcount; | |
1243 | arelent **p, **pend; | |
1244 | ||
1245 | if (info->found) | |
1246 | return; | |
1247 | ||
1248 | relsize = bfd_get_reloc_upper_bound (abfd, sec); | |
1249 | if (relsize < 0) | |
1250 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1251 | if (relsize == 0) | |
1252 | return; | |
1253 | ||
1579bae1 | 1254 | relpp = xmalloc (relsize); |
252b5132 RH |
1255 | relcount = bfd_canonicalize_reloc (abfd, sec, relpp, info->asymbols); |
1256 | if (relcount < 0) | |
1257 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1258 | ||
1259 | p = relpp; | |
1260 | pend = p + relcount; | |
1261 | for (; p < pend && *p != NULL; p++) | |
1262 | { | |
1263 | arelent *q = *p; | |
1264 | ||
1265 | if (q->sym_ptr_ptr != NULL | |
1266 | && *q->sym_ptr_ptr != NULL | |
1267 | && strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), info->symbol) == 0) | |
1268 | { | |
1269 | /* We found a reloc for the symbol we are looking for. */ | |
1270 | einfo ("%C: %s\n", abfd, sec, q->address, info->warning); | |
b34976b6 | 1271 | info->found = TRUE; |
252b5132 RH |
1272 | break; |
1273 | } | |
1274 | } | |
1275 | ||
1276 | free (relpp); | |
1277 | } | |
1278 | ||
1279 | /* This is called when an undefined symbol is found. */ | |
1280 | ||
b34976b6 | 1281 | static bfd_boolean |
1579bae1 AM |
1282 | undefined_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1283 | const char *name, | |
1284 | bfd *abfd, | |
1285 | asection *section, | |
1286 | bfd_vma address, | |
0b28295d | 1287 | bfd_boolean error) |
252b5132 RH |
1288 | { |
1289 | static char *error_name; | |
1290 | static unsigned int error_count; | |
1291 | ||
1292 | #define MAX_ERRORS_IN_A_ROW 5 | |
1293 | ||
1294 | if (config.warn_once) | |
1295 | { | |
1296 | static struct bfd_hash_table *hash; | |
1297 | ||
1298 | /* Only warn once about a particular undefined symbol. */ | |
252b5132 RH |
1299 | if (hash == NULL) |
1300 | { | |
1579bae1 | 1301 | hash = xmalloc (sizeof (struct bfd_hash_table)); |
252b5132 RH |
1302 | if (! bfd_hash_table_init (hash, bfd_hash_newfunc)) |
1303 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); | |
1304 | } | |
1305 | ||
b34976b6 AM |
1306 | if (bfd_hash_lookup (hash, name, FALSE, FALSE) != NULL) |
1307 | return TRUE; | |
252b5132 | 1308 | |
b34976b6 | 1309 | if (bfd_hash_lookup (hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
1310 | einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); |
1311 | } | |
1312 | ||
1313 | /* We never print more than a reasonable number of errors in a row | |
1314 | for a single symbol. */ | |
1579bae1 | 1315 | if (error_name != NULL |
252b5132 RH |
1316 | && strcmp (name, error_name) == 0) |
1317 | ++error_count; | |
1318 | else | |
1319 | { | |
1320 | error_count = 0; | |
1579bae1 | 1321 | if (error_name != NULL) |
252b5132 | 1322 | free (error_name); |
d1b2b2dc | 1323 | error_name = xstrdup (name); |
252b5132 RH |
1324 | } |
1325 | ||
1326 | if (section != NULL) | |
1327 | { | |
1328 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1329 | { |
0b28295d ILT |
1330 | if (error) |
1331 | einfo (_("%X%C: undefined reference to `%T'\n"), | |
1332 | abfd, section, address, name); | |
1333 | else | |
1334 | einfo (_("%C: warning: undefined reference to `%T'\n"), | |
1335 | abfd, section, address, name); | |
b6f29aaa | 1336 | } |
252b5132 | 1337 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1338 | { |
1339 | if (error) | |
1340 | einfo (_("%X%D: more undefined references to `%T' follow\n"), | |
1341 | abfd, section, address, name); | |
1342 | else | |
1343 | einfo (_("%D: warning: more undefined references to `%T' follow\n"), | |
1344 | abfd, section, address, name); | |
1345 | } | |
1346 | else if (error) | |
1347 | einfo ("%X"); | |
252b5132 RH |
1348 | } |
1349 | else | |
1350 | { | |
1351 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1352 | { |
0b28295d ILT |
1353 | if (error) |
1354 | einfo (_("%X%B: undefined reference to `%T'\n"), | |
1355 | abfd, name); | |
1356 | else | |
1357 | einfo (_("%B: warning: undefined reference to `%T'\n"), | |
1358 | abfd, name); | |
b6f29aaa | 1359 | } |
252b5132 | 1360 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1361 | { |
1362 | if (error) | |
1363 | einfo (_("%X%B: more undefined references to `%T' follow\n"), | |
1364 | abfd, name); | |
1365 | else | |
1366 | einfo (_("%B: warning: more undefined references to `%T' follow\n"), | |
1367 | abfd, name); | |
1368 | } | |
1369 | else if (error) | |
1370 | einfo ("%X"); | |
252b5132 RH |
1371 | } |
1372 | ||
b34976b6 | 1373 | return TRUE; |
252b5132 RH |
1374 | } |
1375 | ||
8aae64e6 AO |
1376 | /* Counter to limit the number of relocation overflow error messages |
1377 | to print. Errors are printed as it is decremented. When it's | |
1378 | called and the counter is zero, a final message is printed | |
1379 | indicating more relocations were omitted. When it gets to -1, no | |
1380 | such errors are printed. If it's initially set to a value less | |
1381 | than -1, all such errors will be printed (--verbose does this). */ | |
1382 | ||
1383 | int overflow_cutoff_limit = 10; | |
1384 | ||
252b5132 RH |
1385 | /* This is called when a reloc overflows. */ |
1386 | ||
b34976b6 | 1387 | static bfd_boolean |
1579bae1 | 1388 | reloc_overflow (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
dfeffb9f | 1389 | struct bfd_link_hash_entry *entry, |
1579bae1 AM |
1390 | const char *name, |
1391 | const char *reloc_name, | |
1392 | bfd_vma addend, | |
1393 | bfd *abfd, | |
1394 | asection *section, | |
1395 | bfd_vma address) | |
252b5132 | 1396 | { |
8aae64e6 AO |
1397 | if (overflow_cutoff_limit == -1) |
1398 | return TRUE; | |
1399 | ||
1579bae1 | 1400 | if (abfd == NULL) |
252b5132 RH |
1401 | einfo (_("%P%X: generated")); |
1402 | else | |
1403 | einfo ("%X%C:", abfd, section, address); | |
8aae64e6 AO |
1404 | |
1405 | if (overflow_cutoff_limit >= 0 | |
1406 | && overflow_cutoff_limit-- == 0) | |
1407 | { | |
1408 | einfo (_(" additional relocation overflows omitted from the output\n")); | |
1409 | return TRUE; | |
1410 | } | |
1411 | ||
dfeffb9f L |
1412 | if (entry) |
1413 | { | |
1414 | while (entry->type == bfd_link_hash_indirect | |
1415 | || entry->type == bfd_link_hash_warning) | |
1416 | entry = entry->u.i.link; | |
1417 | switch (entry->type) | |
1418 | { | |
1419 | case bfd_link_hash_undefined: | |
1420 | case bfd_link_hash_undefweak: | |
1421 | einfo (_(" relocation truncated to fit: %s against undefined symbol `%T'"), | |
1422 | reloc_name, entry->root.string); | |
1423 | break; | |
1424 | case bfd_link_hash_defined: | |
1425 | case bfd_link_hash_defweak: | |
1426 | einfo (_(" relocation truncated to fit: %s against symbol `%T' defined in %A section in %B"), | |
1427 | reloc_name, entry->root.string, | |
1428 | entry->u.def.section, entry->u.def.section->owner); | |
1429 | break; | |
1430 | default: | |
1431 | abort (); | |
1432 | break; | |
1433 | } | |
1434 | } | |
1435 | else | |
1436 | einfo (_(" relocation truncated to fit: %s against `%T'"), | |
1437 | reloc_name, name); | |
252b5132 RH |
1438 | if (addend != 0) |
1439 | einfo ("+%v", addend); | |
1440 | einfo ("\n"); | |
b34976b6 | 1441 | return TRUE; |
252b5132 RH |
1442 | } |
1443 | ||
1444 | /* This is called when a dangerous relocation is made. */ | |
1445 | ||
b34976b6 | 1446 | static bfd_boolean |
1579bae1 AM |
1447 | reloc_dangerous (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1448 | const char *message, | |
1449 | bfd *abfd, | |
1450 | asection *section, | |
1451 | bfd_vma address) | |
252b5132 | 1452 | { |
1579bae1 | 1453 | if (abfd == NULL) |
252b5132 RH |
1454 | einfo (_("%P%X: generated")); |
1455 | else | |
1456 | einfo ("%X%C:", abfd, section, address); | |
1457 | einfo (_("dangerous relocation: %s\n"), message); | |
b34976b6 | 1458 | return TRUE; |
252b5132 RH |
1459 | } |
1460 | ||
1461 | /* This is called when a reloc is being generated attached to a symbol | |
1462 | that is not being output. */ | |
1463 | ||
b34976b6 | 1464 | static bfd_boolean |
1579bae1 AM |
1465 | unattached_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1466 | const char *name, | |
1467 | bfd *abfd, | |
1468 | asection *section, | |
1469 | bfd_vma address) | |
252b5132 | 1470 | { |
1579bae1 | 1471 | if (abfd == NULL) |
252b5132 RH |
1472 | einfo (_("%P%X: generated")); |
1473 | else | |
1474 | einfo ("%X%C:", abfd, section, address); | |
1475 | einfo (_(" reloc refers to symbol `%T' which is not being output\n"), name); | |
b34976b6 | 1476 | return TRUE; |
252b5132 RH |
1477 | } |
1478 | ||
1479 | /* This is called if link_info.notice_all is set, or when a symbol in | |
1480 | link_info.notice_hash is found. Symbols are put in notice_hash | |
1481 | using the -y option. */ | |
1482 | ||
b34976b6 | 1483 | static bfd_boolean |
1579bae1 AM |
1484 | notice (struct bfd_link_info *info, |
1485 | const char *name, | |
1486 | bfd *abfd, | |
1487 | asection *section, | |
1488 | bfd_vma value) | |
252b5132 RH |
1489 | { |
1490 | if (! info->notice_all | |
1491 | || (info->notice_hash != NULL | |
b34976b6 | 1492 | && bfd_hash_lookup (info->notice_hash, name, FALSE, FALSE) != NULL)) |
252b5132 RH |
1493 | { |
1494 | if (bfd_is_und_section (section)) | |
1495 | einfo ("%B: reference to %s\n", abfd, name); | |
1496 | else | |
1497 | einfo ("%B: definition of %s\n", abfd, name); | |
1498 | } | |
1499 | ||
1500 | if (command_line.cref || nocrossref_list != NULL) | |
1501 | add_cref (name, abfd, section, value); | |
1502 | ||
b34976b6 | 1503 | return TRUE; |
252b5132 | 1504 | } |