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 | |
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 | 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, | |
d003868e | 163 | notice |
252b5132 RH |
164 | }; |
165 | ||
166 | struct bfd_link_info link_info; | |
167 | \f | |
168 | static void | |
1579bae1 | 169 | remove_output (void) |
252b5132 | 170 | { |
6d5e62f8 | 171 | if (output_filename) |
252b5132 | 172 | { |
c92c35e7 AC |
173 | if (output_bfd) |
174 | bfd_cache_close (output_bfd); | |
252b5132 | 175 | if (delete_output_file_on_failure) |
bb14f524 | 176 | unlink_if_ordinary (output_filename); |
252b5132 RH |
177 | } |
178 | } | |
179 | ||
180 | int | |
1579bae1 | 181 | main (int argc, char **argv) |
252b5132 RH |
182 | { |
183 | char *emulation; | |
184 | long start_time = get_run_time (); | |
185 | ||
186 | #if defined (HAVE_SETLOCALE) && defined (HAVE_LC_MESSAGES) | |
187 | setlocale (LC_MESSAGES, ""); | |
3882b010 L |
188 | #endif |
189 | #if defined (HAVE_SETLOCALE) | |
190 | setlocale (LC_CTYPE, ""); | |
252b5132 RH |
191 | #endif |
192 | bindtextdomain (PACKAGE, LOCALEDIR); | |
193 | textdomain (PACKAGE); | |
194 | ||
195 | program_name = argv[0]; | |
196 | xmalloc_set_program_name (program_name); | |
197 | ||
198 | START_PROGRESS (program_name, 0); | |
199 | ||
200 | bfd_init (); | |
201 | ||
202 | bfd_set_error_program_name (program_name); | |
203 | ||
204 | xatexit (remove_output); | |
205 | ||
e2243057 RS |
206 | /* Set up the sysroot directory. */ |
207 | ld_sysroot = get_sysroot (argc, argv); | |
208 | if (*ld_sysroot) | |
9c8ebd6a | 209 | { |
e2243057 | 210 | if (*TARGET_SYSTEM_ROOT == 0) |
9c8ebd6a | 211 | { |
e2243057 RS |
212 | einfo ("%P%F: this linker was not configured to use sysroots"); |
213 | ld_sysroot = ""; | |
0125cdf2 | 214 | } |
e2243057 RS |
215 | else |
216 | ld_canon_sysroot = lrealpath (ld_sysroot); | |
0125cdf2 | 217 | } |
3fe38064 NC |
218 | if (ld_canon_sysroot) |
219 | ld_canon_sysroot_len = strlen (ld_canon_sysroot); | |
220 | else | |
221 | ld_canon_sysroot_len = -1; | |
222 | ||
252b5132 RH |
223 | /* Set the default BFD target based on the configured target. Doing |
224 | this permits the linker to be configured for a particular target, | |
225 | and linked against a shared BFD library which was configured for | |
226 | a different target. The macro TARGET is defined by Makefile. */ | |
227 | if (! bfd_set_default_target (TARGET)) | |
228 | { | |
229 | einfo (_("%X%P: can't set BFD default target to `%s': %E\n"), TARGET); | |
230 | xexit (1); | |
231 | } | |
232 | ||
b47c4208 AM |
233 | #if YYDEBUG |
234 | { | |
235 | extern int yydebug; | |
236 | yydebug = 1; | |
237 | } | |
238 | #endif | |
239 | ||
252b5132 | 240 | /* Initialize the data about options. */ |
b34976b6 AM |
241 | trace_files = trace_file_tries = version_printed = FALSE; |
242 | whole_archive = FALSE; | |
243 | config.build_constructors = TRUE; | |
244 | config.dynamic_link = FALSE; | |
245 | config.has_shared = FALSE; | |
a854a4a7 AM |
246 | config.split_by_reloc = (unsigned) -1; |
247 | config.split_by_file = (bfd_size_type) -1; | |
2d643429 | 248 | config.hash_table_size = 0; |
b34976b6 AM |
249 | command_line.force_common_definition = FALSE; |
250 | command_line.inhibit_common_definition = FALSE; | |
252b5132 RH |
251 | command_line.interpreter = NULL; |
252 | command_line.rpath = NULL; | |
b34976b6 AM |
253 | command_line.warn_mismatch = TRUE; |
254 | command_line.check_section_addresses = TRUE; | |
312b768e | 255 | command_line.accept_unknown_input_arch = FALSE; |
35835446 | 256 | command_line.reduce_memory_overheads = FALSE; |
252b5132 | 257 | |
bcaa7b3e L |
258 | sort_section = none; |
259 | ||
252b5132 RH |
260 | /* We initialize DEMANGLING based on the environment variable |
261 | COLLECT_NO_DEMANGLE. The gcc collect2 program will demangle the | |
262 | output of the linker, unless COLLECT_NO_DEMANGLE is set in the | |
263 | environment. Acting the same way here lets us provide the same | |
264 | interface by default. */ | |
265 | demangling = getenv ("COLLECT_NO_DEMANGLE") == NULL; | |
266 | ||
1049f94e | 267 | link_info.relocatable = FALSE; |
b34976b6 | 268 | link_info.emitrelocations = FALSE; |
b5067602 | 269 | link_info.task_link = FALSE; |
b34976b6 | 270 | link_info.shared = FALSE; |
36af4a4e JJ |
271 | link_info.pie = FALSE; |
272 | link_info.executable = FALSE; | |
b34976b6 AM |
273 | link_info.symbolic = FALSE; |
274 | link_info.export_dynamic = FALSE; | |
275 | link_info.static_link = FALSE; | |
276 | link_info.traditional_format = FALSE; | |
277 | link_info.optimize = FALSE; | |
560e09e9 NC |
278 | link_info.unresolved_syms_in_objects = RM_NOT_YET_SET; |
279 | link_info.unresolved_syms_in_shared_libs = RM_NOT_YET_SET; | |
b34976b6 AM |
280 | link_info.allow_multiple_definition = FALSE; |
281 | link_info.allow_undefined_version = TRUE; | |
3e3b46e5 | 282 | link_info.create_default_symver = FALSE; |
fc0e6df6 | 283 | link_info.default_imported_symver = FALSE; |
b5067602 AM |
284 | link_info.keep_memory = TRUE; |
285 | link_info.notice_all = FALSE; | |
286 | link_info.nocopyreloc = FALSE; | |
287 | link_info.new_dtags = FALSE; | |
288 | link_info.combreloc = TRUE; | |
289 | link_info.eh_frame_hdr = FALSE; | |
8c37241b | 290 | link_info.relro = FALSE; |
d5cd3933 | 291 | link_info.strip_discarded = TRUE; |
252b5132 | 292 | link_info.strip = strip_none; |
f5fa8ca2 | 293 | link_info.discard = discard_sec_merge; |
b5067602 AM |
294 | link_info.common_skip_ar_aymbols = bfd_link_common_skip_none; |
295 | link_info.callbacks = &link_callbacks; | |
252b5132 RH |
296 | link_info.hash = NULL; |
297 | link_info.keep_hash = NULL; | |
252b5132 RH |
298 | link_info.notice_hash = NULL; |
299 | link_info.wrap_hash = NULL; | |
b5067602 AM |
300 | link_info.input_bfds = NULL; |
301 | link_info.create_object_symbols_section = NULL; | |
302 | link_info.gc_sym_list = NULL; | |
303 | link_info.base_file = NULL; | |
3dbf70a2 MM |
304 | /* SVR4 linkers seem to set DT_INIT and DT_FINI based on magic _init |
305 | and _fini symbols. We are compatible. */ | |
306 | link_info.init_function = "_init"; | |
307 | link_info.fini_function = "_fini"; | |
e0076ab3 | 308 | link_info.pei386_auto_import = -1; |
b34976b6 | 309 | link_info.pei386_runtime_pseudo_reloc = FALSE; |
db6751f2 | 310 | link_info.spare_dynamic_tags = 5; |
1579bae1 AM |
311 | link_info.flags = 0; |
312 | link_info.flags_1 = 0; | |
d9c458fc | 313 | link_info.need_relax_finalize = FALSE; |
8fdd7217 | 314 | link_info.warn_shared_textrel = FALSE; |
57316bff | 315 | link_info.gc_sections = FALSE; |
3dbf70a2 | 316 | |
252b5132 RH |
317 | ldfile_add_arch (""); |
318 | ||
b34976b6 AM |
319 | config.make_executable = TRUE; |
320 | force_make_executable = FALSE; | |
321 | config.magic_demand_paged = TRUE; | |
322 | config.text_read_only = TRUE; | |
252b5132 RH |
323 | |
324 | emulation = get_emulation (argc, argv); | |
325 | ldemul_choose_mode (emulation); | |
742aeb63 | 326 | default_target = ldemul_choose_target (argc, argv); |
252b5132 RH |
327 | lang_init (); |
328 | ldemul_before_parse (); | |
b34976b6 | 329 | lang_has_input_file = FALSE; |
252b5132 RH |
330 | parse_args (argc, argv); |
331 | ||
2d643429 NC |
332 | if (config.hash_table_size != 0) |
333 | bfd_hash_set_default_size (config.hash_table_size); | |
334 | ||
252b5132 RH |
335 | ldemul_set_symbols (); |
336 | ||
1049f94e | 337 | if (link_info.relocatable) |
252b5132 | 338 | { |
57316bff | 339 | if (link_info.gc_sections) |
252b5132 | 340 | einfo ("%P%F: --gc-sections and -r may not be used together\n"); |
252b5132 RH |
341 | else if (command_line.relax) |
342 | einfo (_("%P%F: --relax and -r may not be used together\n")); | |
343 | if (link_info.shared) | |
344 | einfo (_("%P%F: -r and -shared may not be used together\n")); | |
345 | } | |
346 | ||
550bdea6 NC |
347 | if (!config.dynamic_link && link_info.shared) |
348 | einfo (_("%P%F: -static and -shared may not be used together\n")); | |
349 | ||
7333607e JJ |
350 | if (! link_info.shared) |
351 | { | |
352 | if (command_line.filter_shlib) | |
e97cb84f | 353 | einfo (_("%P%F: -F may not be used without -shared\n")); |
7333607e | 354 | if (command_line.auxiliary_filters) |
e97cb84f | 355 | einfo (_("%P%F: -f may not be used without -shared\n")); |
7333607e JJ |
356 | } |
357 | ||
36af4a4e JJ |
358 | if (! link_info.shared || link_info.pie) |
359 | link_info.executable = TRUE; | |
360 | ||
252b5132 RH |
361 | /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I |
362 | don't see how else this can be handled, since in this case we | |
363 | must preserve all externally visible symbols. */ | |
1049f94e | 364 | if (link_info.relocatable && link_info.strip == strip_all) |
252b5132 RH |
365 | { |
366 | link_info.strip = strip_debugger; | |
f5fa8ca2 | 367 | if (link_info.discard == discard_sec_merge) |
252b5132 RH |
368 | link_info.discard = discard_all; |
369 | } | |
370 | ||
371 | /* This essentially adds another -L directory so this must be done after | |
372 | the -L's in argv have been processed. */ | |
373 | set_scripts_dir (); | |
374 | ||
b9a8de1e NC |
375 | /* If we have not already opened and parsed a linker script |
376 | read the emulation's appropriate default script. */ | |
b90e1c6f | 377 | if (saved_script_handle == NULL) |
252b5132 | 378 | { |
252b5132 | 379 | int isfile; |
b7a26f91 | 380 | char *s = ldemul_get_script (&isfile); |
252b5132 RH |
381 | |
382 | if (isfile) | |
383 | ldfile_open_command_file (s); | |
384 | else | |
b7a26f91 | 385 | { |
252b5132 RH |
386 | lex_string = s; |
387 | lex_redirect (s); | |
388 | } | |
389 | parser_input = input_script; | |
390 | yyparse (); | |
391 | lex_string = NULL; | |
392 | } | |
393 | ||
b9a8de1e NC |
394 | if (trace_file_tries) |
395 | { | |
9cb61eab AM |
396 | if (saved_script_handle) |
397 | info_msg (_("using external linker script:")); | |
398 | else | |
399 | info_msg (_("using internal linker script:")); | |
400 | info_msg ("\n==================================================\n"); | |
b9a8de1e NC |
401 | |
402 | if (saved_script_handle) | |
403 | { | |
74699268 | 404 | static const int ld_bufsz = 8193; |
b9a8de1e | 405 | size_t n; |
74699268 | 406 | char *buf = xmalloc (ld_bufsz); |
b9a8de1e NC |
407 | |
408 | rewind (saved_script_handle); | |
74699268 | 409 | while ((n = fread (buf, 1, ld_bufsz - 1, saved_script_handle)) > 0) |
b9a8de1e | 410 | { |
b7a26f91 | 411 | buf[n] = 0; |
b9a8de1e NC |
412 | info_msg (buf); |
413 | } | |
414 | rewind (saved_script_handle); | |
415 | free (buf); | |
416 | } | |
417 | else | |
418 | { | |
419 | int isfile; | |
420 | ||
b7a26f91 | 421 | info_msg (ldemul_get_script (&isfile)); |
b9a8de1e | 422 | } |
b7a26f91 | 423 | |
b9a8de1e NC |
424 | info_msg ("\n==================================================\n"); |
425 | } | |
426 | ||
252b5132 RH |
427 | lang_final (); |
428 | ||
b34976b6 | 429 | if (!lang_has_input_file) |
252b5132 RH |
430 | { |
431 | if (version_printed) | |
432 | xexit (0); | |
433 | einfo (_("%P%F: no input files\n")); | |
434 | } | |
435 | ||
436 | if (trace_files) | |
0125cdf2 | 437 | info_msg (_("%P: mode %s\n"), emulation); |
252b5132 RH |
438 | |
439 | ldemul_after_parse (); | |
440 | ||
252b5132 RH |
441 | if (config.map_filename) |
442 | { | |
443 | if (strcmp (config.map_filename, "-") == 0) | |
444 | { | |
445 | config.map_file = stdout; | |
446 | } | |
447 | else | |
448 | { | |
449 | config.map_file = fopen (config.map_filename, FOPEN_WT); | |
450 | if (config.map_file == (FILE *) NULL) | |
451 | { | |
452 | bfd_set_error (bfd_error_system_call); | |
453 | einfo (_("%P%F: cannot open map file %s: %E\n"), | |
454 | config.map_filename); | |
455 | } | |
456 | } | |
457 | } | |
458 | ||
252b5132 RH |
459 | lang_process (); |
460 | ||
461 | /* Print error messages for any missing symbols, for any warning | |
6d5e62f8 | 462 | symbols, and possibly multiple definitions. */ |
1049f94e | 463 | if (link_info.relocatable) |
252b5132 RH |
464 | output_bfd->flags &= ~EXEC_P; |
465 | else | |
466 | output_bfd->flags |= EXEC_P; | |
467 | ||
468 | ldwrite (); | |
469 | ||
470 | if (config.map_file != NULL) | |
471 | lang_map (); | |
472 | if (command_line.cref) | |
473 | output_cref (config.map_file != NULL ? config.map_file : stdout); | |
474 | if (nocrossref_list != NULL) | |
475 | check_nocrossrefs (); | |
476 | ||
1049f94e | 477 | /* Even if we're producing relocatable output, some non-fatal errors should |
252b5132 | 478 | be reported in the exit status. (What non-fatal errors, if any, do we |
1049f94e | 479 | want to ignore for relocatable output?) */ |
b34976b6 | 480 | if (!config.make_executable && !force_make_executable) |
252b5132 | 481 | { |
b34976b6 | 482 | if (trace_files) |
0125cdf2 NC |
483 | einfo (_("%P: link errors found, deleting executable `%s'\n"), |
484 | output_filename); | |
252b5132 RH |
485 | |
486 | /* The file will be removed by remove_output. */ | |
252b5132 RH |
487 | xexit (1); |
488 | } | |
489 | else | |
490 | { | |
491 | if (! bfd_close (output_bfd)) | |
492 | einfo (_("%F%B: final close failed: %E\n"), output_bfd); | |
493 | ||
494 | /* If the --force-exe-suffix is enabled, and we're making an | |
6d5e62f8 KH |
495 | executable file and it doesn't end in .exe, copy it to one |
496 | which does. */ | |
1049f94e | 497 | if (! link_info.relocatable && command_line.force_exe_suffix) |
252b5132 RH |
498 | { |
499 | int len = strlen (output_filename); | |
0125cdf2 | 500 | |
6d5e62f8 | 501 | if (len < 4 |
252b5132 RH |
502 | || (strcasecmp (output_filename + len - 4, ".exe") != 0 |
503 | && strcasecmp (output_filename + len - 4, ".dll") != 0)) | |
504 | { | |
505 | FILE *src; | |
506 | FILE *dst; | |
507 | const int bsize = 4096; | |
508 | char *buf = xmalloc (bsize); | |
509 | int l; | |
510 | char *dst_name = xmalloc (len + 5); | |
0125cdf2 | 511 | |
252b5132 RH |
512 | strcpy (dst_name, output_filename); |
513 | strcat (dst_name, ".exe"); | |
514 | src = fopen (output_filename, FOPEN_RB); | |
515 | dst = fopen (dst_name, FOPEN_WB); | |
516 | ||
517 | if (!src) | |
1579bae1 AM |
518 | einfo (_("%X%P: unable to open for source of copy `%s'\n"), |
519 | output_filename); | |
252b5132 | 520 | if (!dst) |
1579bae1 AM |
521 | einfo (_("%X%P: unable to open for destination of copy `%s'\n"), |
522 | dst_name); | |
252b5132 RH |
523 | while ((l = fread (buf, 1, bsize, src)) > 0) |
524 | { | |
525 | int done = fwrite (buf, 1, l, dst); | |
0125cdf2 | 526 | |
252b5132 | 527 | if (done != l) |
0125cdf2 | 528 | einfo (_("%P: Error writing file `%s'\n"), dst_name); |
252b5132 | 529 | } |
0125cdf2 | 530 | |
252b5132 RH |
531 | fclose (src); |
532 | if (fclose (dst) == EOF) | |
0125cdf2 | 533 | einfo (_("%P: Error closing file `%s'\n"), dst_name); |
252b5132 RH |
534 | free (dst_name); |
535 | free (buf); | |
536 | } | |
537 | } | |
538 | } | |
539 | ||
540 | END_PROGRESS (program_name); | |
541 | ||
542 | if (config.stats) | |
543 | { | |
544 | #ifdef HAVE_SBRK | |
1579bae1 | 545 | char *lim = sbrk (0); |
252b5132 RH |
546 | #endif |
547 | long run_time = get_run_time () - start_time; | |
548 | ||
549 | fprintf (stderr, _("%s: total time in link: %ld.%06ld\n"), | |
550 | program_name, run_time / 1000000, run_time % 1000000); | |
551 | #ifdef HAVE_SBRK | |
552 | fprintf (stderr, _("%s: data size %ld\n"), program_name, | |
553 | (long) (lim - (char *) &environ)); | |
554 | #endif | |
555 | } | |
556 | ||
557 | /* Prevent remove_output from doing anything, after a successful link. */ | |
558 | output_filename = NULL; | |
559 | ||
560 | xexit (0); | |
561 | return 0; | |
562 | } | |
563 | ||
e2243057 RS |
564 | /* If the configured sysroot is relocatable, try relocating it based on |
565 | default prefix FROM. Return the relocated directory if it exists, | |
566 | otherwise return null. */ | |
567 | ||
568 | static char * | |
569 | get_relative_sysroot (const char *from ATTRIBUTE_UNUSED) | |
570 | { | |
571 | #ifdef TARGET_SYSTEM_ROOT_RELOCATABLE | |
572 | char *path; | |
573 | struct stat s; | |
574 | ||
575 | path = make_relative_prefix (program_name, from, TARGET_SYSTEM_ROOT); | |
576 | if (path) | |
577 | { | |
578 | if (stat (path, &s) == 0 && S_ISDIR (s.st_mode)) | |
579 | return path; | |
580 | free (path); | |
581 | } | |
582 | #endif | |
583 | return 0; | |
584 | } | |
585 | ||
586 | /* Return the sysroot directory. Return "" if no sysroot is being used. */ | |
587 | ||
588 | static const char * | |
589 | get_sysroot (int argc, char **argv) | |
590 | { | |
591 | int i; | |
592 | const char *path; | |
593 | ||
594 | for (i = 1; i < argc; i++) | |
595 | if (strncmp (argv[i], "--sysroot=", strlen ("--sysroot=")) == 0) | |
596 | return argv[i] + strlen ("--sysroot="); | |
597 | ||
598 | path = get_relative_sysroot (BINDIR); | |
599 | if (path) | |
600 | return path; | |
601 | ||
602 | path = get_relative_sysroot (TOOLBINDIR); | |
603 | if (path) | |
604 | return path; | |
605 | ||
606 | return TARGET_SYSTEM_ROOT; | |
607 | } | |
608 | ||
252b5132 RH |
609 | /* We need to find any explicitly given emulation in order to initialize the |
610 | state that's needed by the lex&yacc argument parser (parse_args). */ | |
611 | ||
612 | static char * | |
1579bae1 | 613 | get_emulation (int argc, char **argv) |
252b5132 RH |
614 | { |
615 | char *emulation; | |
616 | int i; | |
617 | ||
618 | emulation = getenv (EMULATION_ENVIRON); | |
619 | if (emulation == NULL) | |
620 | emulation = DEFAULT_EMULATION; | |
621 | ||
622 | for (i = 1; i < argc; i++) | |
623 | { | |
624 | if (!strncmp (argv[i], "-m", 2)) | |
625 | { | |
626 | if (argv[i][2] == '\0') | |
627 | { | |
628 | /* -m EMUL */ | |
629 | if (i < argc - 1) | |
630 | { | |
631 | emulation = argv[i + 1]; | |
632 | i++; | |
633 | } | |
634 | else | |
0125cdf2 | 635 | einfo (_("%P%F: missing argument to -m\n")); |
252b5132 RH |
636 | } |
637 | else if (strcmp (argv[i], "-mips1") == 0 | |
638 | || strcmp (argv[i], "-mips2") == 0 | |
639 | || strcmp (argv[i], "-mips3") == 0 | |
d1cf510e | 640 | || strcmp (argv[i], "-mips4") == 0 |
6f33421c CD |
641 | || strcmp (argv[i], "-mips5") == 0 |
642 | || strcmp (argv[i], "-mips32") == 0 | |
643 | || strcmp (argv[i], "-mips32r2") == 0 | |
5f74bc13 CD |
644 | || strcmp (argv[i], "-mips64") == 0 |
645 | || strcmp (argv[i], "-mips64r2") == 0) | |
252b5132 | 646 | { |
31d677f9 | 647 | /* FIXME: The arguments -mips1, -mips2, -mips3, etc. are |
252b5132 RH |
648 | passed to the linker by some MIPS compilers. They |
649 | generally tell the linker to use a slightly different | |
650 | library path. Perhaps someday these should be | |
651 | implemented as emulations; until then, we just ignore | |
652 | the arguments and hope that nobody ever creates | |
653 | emulations named ips1, ips2 or ips3. */ | |
654 | } | |
655 | else if (strcmp (argv[i], "-m486") == 0) | |
656 | { | |
657 | /* FIXME: The argument -m486 is passed to the linker on | |
658 | some Linux systems. Hope that nobody creates an | |
659 | emulation named 486. */ | |
660 | } | |
661 | else | |
662 | { | |
663 | /* -mEMUL */ | |
664 | emulation = &argv[i][2]; | |
665 | } | |
666 | } | |
667 | } | |
668 | ||
669 | return emulation; | |
670 | } | |
671 | ||
672 | /* If directory DIR contains an "ldscripts" subdirectory, | |
b34976b6 AM |
673 | add DIR to the library search path and return TRUE, |
674 | else return FALSE. */ | |
252b5132 | 675 | |
b34976b6 | 676 | static bfd_boolean |
1579bae1 | 677 | check_for_scripts_dir (char *dir) |
252b5132 RH |
678 | { |
679 | size_t dirlen; | |
680 | char *buf; | |
681 | struct stat s; | |
b34976b6 | 682 | bfd_boolean res; |
252b5132 RH |
683 | |
684 | dirlen = strlen (dir); | |
685 | /* sizeof counts the terminating NUL. */ | |
1579bae1 | 686 | buf = xmalloc (dirlen + sizeof ("/ldscripts")); |
252b5132 RH |
687 | sprintf (buf, "%s/ldscripts", dir); |
688 | ||
689 | res = stat (buf, &s) == 0 && S_ISDIR (s.st_mode); | |
690 | free (buf); | |
691 | if (res) | |
b34976b6 | 692 | ldfile_add_library_path (dir, FALSE); |
252b5132 RH |
693 | return res; |
694 | } | |
695 | ||
696 | /* Set the default directory for finding script files. | |
697 | Libraries will be searched for here too, but that's ok. | |
698 | We look for the "ldscripts" directory in: | |
699 | ||
cdc0d45e DJ |
700 | SCRIPTDIR (passed from Makefile) |
701 | (adjusted according to the current location of the binary) | |
252b5132 RH |
702 | SCRIPTDIR (passed from Makefile) |
703 | the dir where this program is (for using it from the build tree) | |
cdc0d45e | 704 | the dir where this program is/../lib |
0125cdf2 | 705 | (for installing the tool suite elsewhere). */ |
252b5132 RH |
706 | |
707 | static void | |
1579bae1 | 708 | set_scripts_dir (void) |
252b5132 RH |
709 | { |
710 | char *end, *dir; | |
711 | size_t dirlen; | |
5ed6aba4 | 712 | bfd_boolean found; |
252b5132 | 713 | |
cdc0d45e | 714 | dir = make_relative_prefix (program_name, BINDIR, SCRIPTDIR); |
cdc0d45e | 715 | if (dir) |
5ed6aba4 NC |
716 | { |
717 | found = check_for_scripts_dir (dir); | |
718 | free (dir); | |
719 | if (found) | |
720 | return; | |
721 | } | |
cdc0d45e | 722 | |
4ca1b790 | 723 | dir = make_relative_prefix (program_name, TOOLBINDIR, SCRIPTDIR); |
4ca1b790 | 724 | if (dir) |
5ed6aba4 NC |
725 | { |
726 | found = check_for_scripts_dir (dir); | |
727 | free (dir); | |
728 | if (found) | |
729 | return; | |
730 | } | |
4ca1b790 | 731 | |
252b5132 | 732 | if (check_for_scripts_dir (SCRIPTDIR)) |
6d5e62f8 KH |
733 | /* We've been installed normally. */ |
734 | return; | |
252b5132 RH |
735 | |
736 | /* Look for "ldscripts" in the dir where our binary is. */ | |
737 | end = strrchr (program_name, '/'); | |
5af11cab AM |
738 | #ifdef HAVE_DOS_BASED_FILE_SYSTEM |
739 | { | |
740 | /* We could have \foo\bar, or /foo\bar. */ | |
741 | char *bslash = strrchr (program_name, '\\'); | |
0125cdf2 | 742 | |
2ab47eed | 743 | if (end == NULL || (bslash != NULL && bslash > end)) |
5af11cab AM |
744 | end = bslash; |
745 | } | |
746 | #endif | |
252b5132 RH |
747 | |
748 | if (end == NULL) | |
0125cdf2 NC |
749 | /* Don't look for ldscripts in the current directory. There is |
750 | too much potential for confusion. */ | |
751 | return; | |
252b5132 RH |
752 | |
753 | dirlen = end - program_name; | |
754 | /* Make a copy of program_name in dir. | |
755 | Leave room for later "/../lib". */ | |
1579bae1 | 756 | dir = xmalloc (dirlen + 8); |
252b5132 RH |
757 | strncpy (dir, program_name, dirlen); |
758 | dir[dirlen] = '\0'; | |
759 | ||
760 | if (check_for_scripts_dir (dir)) | |
5ed6aba4 NC |
761 | { |
762 | free (dir); | |
763 | return; | |
764 | } | |
252b5132 RH |
765 | |
766 | /* Look for "ldscripts" in <the dir where our binary is>/../lib. */ | |
767 | strcpy (dir + dirlen, "/../lib"); | |
5ed6aba4 | 768 | check_for_scripts_dir (dir); |
6d5e62f8 | 769 | free (dir); |
252b5132 RH |
770 | } |
771 | ||
772 | void | |
1579bae1 | 773 | add_ysym (const char *name) |
252b5132 | 774 | { |
1579bae1 | 775 | if (link_info.notice_hash == NULL) |
252b5132 | 776 | { |
1579bae1 | 777 | link_info.notice_hash = xmalloc (sizeof (struct bfd_hash_table)); |
252b5132 RH |
778 | if (! bfd_hash_table_init_n (link_info.notice_hash, |
779 | bfd_hash_newfunc, | |
780 | 61)) | |
781 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
6d5e62f8 | 782 | } |
252b5132 | 783 | |
1579bae1 | 784 | if (bfd_hash_lookup (link_info.notice_hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
785 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); |
786 | } | |
787 | ||
788 | /* Record a symbol to be wrapped, from the --wrap option. */ | |
789 | ||
790 | void | |
1579bae1 | 791 | add_wrap (const char *name) |
252b5132 RH |
792 | { |
793 | if (link_info.wrap_hash == NULL) | |
794 | { | |
1579bae1 | 795 | link_info.wrap_hash = xmalloc (sizeof (struct bfd_hash_table)); |
252b5132 RH |
796 | if (! bfd_hash_table_init_n (link_info.wrap_hash, |
797 | bfd_hash_newfunc, | |
798 | 61)) | |
799 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
800 | } | |
0125cdf2 | 801 | |
b34976b6 | 802 | if (bfd_hash_lookup (link_info.wrap_hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
803 | einfo (_("%P%F: bfd_hash_lookup failed: %E\n")); |
804 | } | |
805 | ||
806 | /* Handle the -retain-symbols-file option. */ | |
807 | ||
808 | void | |
1579bae1 | 809 | add_keepsyms_file (const char *filename) |
252b5132 RH |
810 | { |
811 | FILE *file; | |
812 | char *buf; | |
813 | size_t bufsize; | |
814 | int c; | |
815 | ||
816 | if (link_info.strip == strip_some) | |
817 | einfo (_("%X%P: error: duplicate retain-symbols-file\n")); | |
818 | ||
819 | file = fopen (filename, "r"); | |
1579bae1 | 820 | if (file == NULL) |
252b5132 RH |
821 | { |
822 | bfd_set_error (bfd_error_system_call); | |
823 | einfo ("%X%P: %s: %E\n", filename); | |
824 | return; | |
825 | } | |
826 | ||
1579bae1 | 827 | link_info.keep_hash = xmalloc (sizeof (struct bfd_hash_table)); |
252b5132 RH |
828 | if (! bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc)) |
829 | einfo (_("%P%F: bfd_hash_table_init failed: %E\n")); | |
830 | ||
831 | bufsize = 100; | |
1579bae1 | 832 | buf = xmalloc (bufsize); |
252b5132 RH |
833 | |
834 | c = getc (file); | |
835 | while (c != EOF) | |
836 | { | |
3882b010 | 837 | while (ISSPACE (c)) |
252b5132 RH |
838 | c = getc (file); |
839 | ||
840 | if (c != EOF) | |
841 | { | |
842 | size_t len = 0; | |
843 | ||
3882b010 | 844 | while (! ISSPACE (c) && c != EOF) |
252b5132 RH |
845 | { |
846 | buf[len] = c; | |
847 | ++len; | |
848 | if (len >= bufsize) | |
849 | { | |
850 | bufsize *= 2; | |
851 | buf = xrealloc (buf, bufsize); | |
852 | } | |
853 | c = getc (file); | |
854 | } | |
855 | ||
856 | buf[len] = '\0'; | |
857 | ||
1579bae1 | 858 | if (bfd_hash_lookup (link_info.keep_hash, buf, TRUE, TRUE) == NULL) |
252b5132 RH |
859 | einfo (_("%P%F: bfd_hash_lookup for insertion failed: %E\n")); |
860 | } | |
861 | } | |
862 | ||
863 | if (link_info.strip != strip_none) | |
864 | einfo (_("%P: `-retain-symbols-file' overrides `-s' and `-S'\n")); | |
865 | ||
5ed6aba4 | 866 | free (buf); |
252b5132 RH |
867 | link_info.strip = strip_some; |
868 | } | |
869 | \f | |
870 | /* Callbacks from the BFD linker routines. */ | |
871 | ||
872 | /* This is called when BFD has decided to include an archive member in | |
873 | a link. */ | |
874 | ||
b34976b6 | 875 | static bfd_boolean |
1579bae1 AM |
876 | add_archive_element (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
877 | bfd *abfd, | |
878 | const char *name) | |
252b5132 RH |
879 | { |
880 | lang_input_statement_type *input; | |
881 | ||
1579bae1 | 882 | input = xmalloc (sizeof (lang_input_statement_type)); |
252b5132 RH |
883 | input->filename = abfd->filename; |
884 | input->local_sym_name = abfd->filename; | |
885 | input->the_bfd = abfd; | |
886 | input->asymbols = NULL; | |
887 | input->next = NULL; | |
b34976b6 AM |
888 | input->just_syms_flag = FALSE; |
889 | input->loaded = FALSE; | |
890 | input->search_dirs_flag = FALSE; | |
252b5132 RH |
891 | |
892 | /* FIXME: The following fields are not set: header.next, | |
893 | header.type, closed, passive_position, symbol_count, | |
894 | next_real_file, is_archive, target, real. This bit of code is | |
895 | from the old decode_library_subfile function. I don't know | |
896 | whether any of those fields matters. */ | |
897 | ||
898 | ldlang_add_file (input); | |
899 | ||
1579bae1 | 900 | if (config.map_file != NULL) |
252b5132 | 901 | { |
b34976b6 | 902 | static bfd_boolean header_printed; |
252b5132 RH |
903 | struct bfd_link_hash_entry *h; |
904 | bfd *from; | |
905 | int len; | |
906 | ||
b34976b6 | 907 | h = bfd_link_hash_lookup (link_info.hash, name, FALSE, FALSE, TRUE); |
252b5132 RH |
908 | |
909 | if (h == NULL) | |
910 | from = NULL; | |
911 | else | |
912 | { | |
913 | switch (h->type) | |
914 | { | |
915 | default: | |
916 | from = NULL; | |
917 | break; | |
918 | ||
919 | case bfd_link_hash_defined: | |
920 | case bfd_link_hash_defweak: | |
921 | from = h->u.def.section->owner; | |
922 | break; | |
923 | ||
924 | case bfd_link_hash_undefined: | |
925 | case bfd_link_hash_undefweak: | |
926 | from = h->u.undef.abfd; | |
927 | break; | |
928 | ||
929 | case bfd_link_hash_common: | |
930 | from = h->u.c.p->section->owner; | |
931 | break; | |
932 | } | |
933 | } | |
934 | ||
935 | if (! header_printed) | |
936 | { | |
937 | char buf[100]; | |
938 | ||
e3c8793a | 939 | sprintf (buf, _("Archive member included because of file (symbol)\n\n")); |
252b5132 | 940 | minfo ("%s", buf); |
b34976b6 | 941 | header_printed = TRUE; |
252b5132 RH |
942 | } |
943 | ||
944 | if (bfd_my_archive (abfd) == NULL) | |
945 | { | |
946 | minfo ("%s", bfd_get_filename (abfd)); | |
947 | len = strlen (bfd_get_filename (abfd)); | |
948 | } | |
949 | else | |
950 | { | |
951 | minfo ("%s(%s)", bfd_get_filename (bfd_my_archive (abfd)), | |
952 | bfd_get_filename (abfd)); | |
953 | len = (strlen (bfd_get_filename (bfd_my_archive (abfd))) | |
954 | + strlen (bfd_get_filename (abfd)) | |
955 | + 2); | |
956 | } | |
957 | ||
958 | if (len >= 29) | |
959 | { | |
960 | print_nl (); | |
961 | len = 0; | |
962 | } | |
963 | while (len < 30) | |
964 | { | |
965 | print_space (); | |
966 | ++len; | |
967 | } | |
968 | ||
969 | if (from != NULL) | |
970 | minfo ("%B ", from); | |
971 | if (h != NULL) | |
972 | minfo ("(%T)\n", h->root.string); | |
973 | else | |
974 | minfo ("(%s)\n", name); | |
975 | } | |
976 | ||
977 | if (trace_files || trace_file_tries) | |
978 | info_msg ("%I\n", input); | |
979 | ||
b34976b6 | 980 | return TRUE; |
252b5132 RH |
981 | } |
982 | ||
983 | /* This is called when BFD has discovered a symbol which is defined | |
984 | multiple times. */ | |
985 | ||
b34976b6 | 986 | static bfd_boolean |
1579bae1 AM |
987 | multiple_definition (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
988 | const char *name, | |
989 | bfd *obfd, | |
990 | asection *osec, | |
991 | bfd_vma oval, | |
992 | bfd *nbfd, | |
993 | asection *nsec, | |
994 | bfd_vma nval) | |
252b5132 RH |
995 | { |
996 | /* If either section has the output_section field set to | |
997 | bfd_abs_section_ptr, it means that the section is being | |
998 | discarded, and this is not really a multiple definition at all. | |
999 | FIXME: It would be cleaner to somehow ignore symbols defined in | |
1000 | sections which are being discarded. */ | |
1001 | if ((osec->output_section != NULL | |
1002 | && ! bfd_is_abs_section (osec) | |
1003 | && bfd_is_abs_section (osec->output_section)) | |
1004 | || (nsec->output_section != NULL | |
1005 | && ! bfd_is_abs_section (nsec) | |
1006 | && bfd_is_abs_section (nsec->output_section))) | |
b34976b6 | 1007 | return TRUE; |
252b5132 RH |
1008 | |
1009 | einfo (_("%X%C: multiple definition of `%T'\n"), | |
1010 | nbfd, nsec, nval, name); | |
1579bae1 | 1011 | if (obfd != NULL) |
252b5132 | 1012 | einfo (_("%D: first defined here\n"), obfd, osec, oval); |
9b14b192 NC |
1013 | |
1014 | if (command_line.relax) | |
1015 | { | |
1016 | einfo (_("%P: Disabling relaxation: it will not work with multiple definitions\n")); | |
1017 | command_line.relax = 0; | |
1018 | } | |
6d5e62f8 | 1019 | |
b34976b6 | 1020 | return TRUE; |
252b5132 RH |
1021 | } |
1022 | ||
1023 | /* This is called when there is a definition of a common symbol, or | |
1024 | when a common symbol is found for a symbol that is already defined, | |
1025 | or when two common symbols are found. We only do something if | |
1026 | -warn-common was used. */ | |
1027 | ||
b34976b6 | 1028 | static bfd_boolean |
1579bae1 AM |
1029 | multiple_common (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1030 | const char *name, | |
1031 | bfd *obfd, | |
1032 | enum bfd_link_hash_type otype, | |
1033 | bfd_vma osize, | |
1034 | bfd *nbfd, | |
1035 | enum bfd_link_hash_type ntype, | |
1036 | bfd_vma nsize) | |
252b5132 RH |
1037 | { |
1038 | if (! config.warn_common) | |
b34976b6 | 1039 | return TRUE; |
252b5132 RH |
1040 | |
1041 | if (ntype == bfd_link_hash_defined | |
1042 | || ntype == bfd_link_hash_defweak | |
1043 | || ntype == bfd_link_hash_indirect) | |
1044 | { | |
1045 | ASSERT (otype == bfd_link_hash_common); | |
1046 | einfo (_("%B: warning: definition of `%T' overriding common\n"), | |
1047 | nbfd, name); | |
1048 | if (obfd != NULL) | |
1049 | einfo (_("%B: warning: common is here\n"), obfd); | |
1050 | } | |
1051 | else if (otype == bfd_link_hash_defined | |
1052 | || otype == bfd_link_hash_defweak | |
1053 | || otype == bfd_link_hash_indirect) | |
1054 | { | |
1055 | ASSERT (ntype == bfd_link_hash_common); | |
1056 | einfo (_("%B: warning: common of `%T' overridden by definition\n"), | |
1057 | nbfd, name); | |
1058 | if (obfd != NULL) | |
1059 | einfo (_("%B: warning: defined here\n"), obfd); | |
1060 | } | |
1061 | else | |
1062 | { | |
1063 | ASSERT (otype == bfd_link_hash_common && ntype == bfd_link_hash_common); | |
1064 | if (osize > nsize) | |
1065 | { | |
1066 | einfo (_("%B: warning: common of `%T' overridden by larger common\n"), | |
1067 | nbfd, name); | |
1068 | if (obfd != NULL) | |
1069 | einfo (_("%B: warning: larger common is here\n"), obfd); | |
1070 | } | |
1071 | else if (nsize > osize) | |
1072 | { | |
1073 | einfo (_("%B: warning: common of `%T' overriding smaller common\n"), | |
1074 | nbfd, name); | |
1075 | if (obfd != NULL) | |
1076 | einfo (_("%B: warning: smaller common is here\n"), obfd); | |
1077 | } | |
1078 | else | |
1079 | { | |
1080 | einfo (_("%B: warning: multiple common of `%T'\n"), nbfd, name); | |
1081 | if (obfd != NULL) | |
1082 | einfo (_("%B: warning: previous common is here\n"), obfd); | |
1083 | } | |
1084 | } | |
1085 | ||
b34976b6 | 1086 | return TRUE; |
252b5132 RH |
1087 | } |
1088 | ||
1089 | /* This is called when BFD has discovered a set element. H is the | |
1090 | entry in the linker hash table for the set. SECTION and VALUE | |
1091 | represent a value which should be added to the set. */ | |
1092 | ||
b34976b6 | 1093 | static bfd_boolean |
1579bae1 AM |
1094 | add_to_set (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1095 | struct bfd_link_hash_entry *h, | |
1096 | bfd_reloc_code_real_type reloc, | |
1097 | bfd *abfd, | |
1098 | asection *section, | |
1099 | bfd_vma value) | |
252b5132 RH |
1100 | { |
1101 | if (config.warn_constructors) | |
1102 | einfo (_("%P: warning: global constructor %s used\n"), | |
1103 | h->root.string); | |
1104 | ||
1105 | if (! config.build_constructors) | |
b34976b6 | 1106 | return TRUE; |
252b5132 | 1107 | |
1579bae1 | 1108 | ldctor_add_set_entry (h, reloc, NULL, section, value); |
252b5132 RH |
1109 | |
1110 | if (h->type == bfd_link_hash_new) | |
1111 | { | |
1112 | h->type = bfd_link_hash_undefined; | |
1113 | h->u.undef.abfd = abfd; | |
1114 | /* We don't call bfd_link_add_undef to add this to the list of | |
1115 | undefined symbols because we are going to define it | |
1116 | ourselves. */ | |
1117 | } | |
1118 | ||
b34976b6 | 1119 | return TRUE; |
252b5132 RH |
1120 | } |
1121 | ||
1122 | /* This is called when BFD has discovered a constructor. This is only | |
1123 | called for some object file formats--those which do not handle | |
1124 | constructors in some more clever fashion. This is similar to | |
1125 | adding an element to a set, but less general. */ | |
1126 | ||
b34976b6 | 1127 | static bfd_boolean |
1579bae1 AM |
1128 | constructor_callback (struct bfd_link_info *info, |
1129 | bfd_boolean constructor, | |
1130 | const char *name, | |
1131 | bfd *abfd, | |
1132 | asection *section, | |
1133 | bfd_vma value) | |
252b5132 RH |
1134 | { |
1135 | char *s; | |
1136 | struct bfd_link_hash_entry *h; | |
1137 | char set_name[1 + sizeof "__CTOR_LIST__"]; | |
1138 | ||
1139 | if (config.warn_constructors) | |
1140 | einfo (_("%P: warning: global constructor %s used\n"), name); | |
1141 | ||
1142 | if (! config.build_constructors) | |
b34976b6 | 1143 | return TRUE; |
252b5132 RH |
1144 | |
1145 | /* Ensure that BFD_RELOC_CTOR exists now, so that we can give a | |
1146 | useful error message. */ | |
1147 | if (bfd_reloc_type_lookup (output_bfd, BFD_RELOC_CTOR) == NULL | |
1049f94e | 1148 | && (link_info.relocatable |
252b5132 RH |
1149 | || bfd_reloc_type_lookup (abfd, BFD_RELOC_CTOR) == NULL)) |
1150 | einfo (_("%P%F: BFD backend error: BFD_RELOC_CTOR unsupported\n")); | |
1151 | ||
1152 | s = set_name; | |
1153 | if (bfd_get_symbol_leading_char (abfd) != '\0') | |
1154 | *s++ = bfd_get_symbol_leading_char (abfd); | |
1155 | if (constructor) | |
1156 | strcpy (s, "__CTOR_LIST__"); | |
1157 | else | |
1158 | strcpy (s, "__DTOR_LIST__"); | |
1159 | ||
b34976b6 | 1160 | h = bfd_link_hash_lookup (info->hash, set_name, TRUE, TRUE, TRUE); |
252b5132 RH |
1161 | if (h == (struct bfd_link_hash_entry *) NULL) |
1162 | einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n")); | |
1163 | if (h->type == bfd_link_hash_new) | |
1164 | { | |
1165 | h->type = bfd_link_hash_undefined; | |
1166 | h->u.undef.abfd = abfd; | |
1167 | /* We don't call bfd_link_add_undef to add this to the list of | |
1168 | undefined symbols because we are going to define it | |
1169 | ourselves. */ | |
1170 | } | |
1171 | ||
1172 | ldctor_add_set_entry (h, BFD_RELOC_CTOR, name, section, value); | |
b34976b6 | 1173 | return TRUE; |
252b5132 RH |
1174 | } |
1175 | ||
1176 | /* A structure used by warning_callback to pass information through | |
1177 | bfd_map_over_sections. */ | |
1178 | ||
0125cdf2 NC |
1179 | struct warning_callback_info |
1180 | { | |
b34976b6 | 1181 | bfd_boolean found; |
252b5132 RH |
1182 | const char *warning; |
1183 | const char *symbol; | |
1184 | asymbol **asymbols; | |
1185 | }; | |
1186 | ||
1187 | /* This is called when there is a reference to a warning symbol. */ | |
1188 | ||
b34976b6 | 1189 | static bfd_boolean |
1579bae1 AM |
1190 | warning_callback (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1191 | const char *warning, | |
1192 | const char *symbol, | |
1193 | bfd *abfd, | |
1194 | asection *section, | |
1195 | bfd_vma address) | |
252b5132 RH |
1196 | { |
1197 | /* This is a hack to support warn_multiple_gp. FIXME: This should | |
1198 | have a cleaner interface, but what? */ | |
1199 | if (! config.warn_multiple_gp | |
1200 | && strcmp (warning, "using multiple gp values") == 0) | |
b34976b6 | 1201 | return TRUE; |
252b5132 RH |
1202 | |
1203 | if (section != NULL) | |
300475fe | 1204 | einfo ("%C: %s%s\n", abfd, section, address, _("warning: "), warning); |
252b5132 | 1205 | else if (abfd == NULL) |
300475fe | 1206 | einfo ("%P: %s%s\n", _("warning: "), warning); |
252b5132 | 1207 | else if (symbol == NULL) |
300475fe | 1208 | einfo ("%B: %s%s\n", abfd, _("warning: "), warning); |
252b5132 RH |
1209 | else |
1210 | { | |
1211 | lang_input_statement_type *entry; | |
1212 | asymbol **asymbols; | |
1213 | struct warning_callback_info info; | |
1214 | ||
1215 | /* Look through the relocs to see if we can find a plausible | |
1216 | address. */ | |
252b5132 RH |
1217 | entry = (lang_input_statement_type *) abfd->usrdata; |
1218 | if (entry != NULL && entry->asymbols != NULL) | |
1219 | asymbols = entry->asymbols; | |
1220 | else | |
1221 | { | |
1222 | long symsize; | |
1223 | long symbol_count; | |
1224 | ||
1225 | symsize = bfd_get_symtab_upper_bound (abfd); | |
1226 | if (symsize < 0) | |
1227 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
1579bae1 | 1228 | asymbols = xmalloc (symsize); |
252b5132 RH |
1229 | symbol_count = bfd_canonicalize_symtab (abfd, asymbols); |
1230 | if (symbol_count < 0) | |
1231 | einfo (_("%B%F: could not read symbols: %E\n"), abfd); | |
1232 | if (entry != NULL) | |
1233 | { | |
1234 | entry->asymbols = asymbols; | |
1235 | entry->symbol_count = symbol_count; | |
1236 | } | |
1237 | } | |
1238 | ||
b34976b6 | 1239 | info.found = FALSE; |
252b5132 RH |
1240 | info.warning = warning; |
1241 | info.symbol = symbol; | |
1242 | info.asymbols = asymbols; | |
1579bae1 | 1243 | bfd_map_over_sections (abfd, warning_find_reloc, &info); |
252b5132 RH |
1244 | |
1245 | if (! info.found) | |
300475fe | 1246 | einfo ("%B: %s%s\n", abfd, _("warning: "), warning); |
252b5132 RH |
1247 | |
1248 | if (entry == NULL) | |
1249 | free (asymbols); | |
1250 | } | |
1251 | ||
b34976b6 | 1252 | return TRUE; |
252b5132 RH |
1253 | } |
1254 | ||
1255 | /* This is called by warning_callback for each section. It checks the | |
1256 | relocs of the section to see if it can find a reference to the | |
1257 | symbol which triggered the warning. If it can, it uses the reloc | |
1258 | to give an error message with a file and line number. */ | |
1259 | ||
1260 | static void | |
1579bae1 | 1261 | warning_find_reloc (bfd *abfd, asection *sec, void *iarg) |
252b5132 | 1262 | { |
1579bae1 | 1263 | struct warning_callback_info *info = iarg; |
252b5132 RH |
1264 | long relsize; |
1265 | arelent **relpp; | |
1266 | long relcount; | |
1267 | arelent **p, **pend; | |
1268 | ||
1269 | if (info->found) | |
1270 | return; | |
1271 | ||
1272 | relsize = bfd_get_reloc_upper_bound (abfd, sec); | |
1273 | if (relsize < 0) | |
1274 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1275 | if (relsize == 0) | |
1276 | return; | |
1277 | ||
1579bae1 | 1278 | relpp = xmalloc (relsize); |
252b5132 RH |
1279 | relcount = bfd_canonicalize_reloc (abfd, sec, relpp, info->asymbols); |
1280 | if (relcount < 0) | |
1281 | einfo (_("%B%F: could not read relocs: %E\n"), abfd); | |
1282 | ||
1283 | p = relpp; | |
1284 | pend = p + relcount; | |
1285 | for (; p < pend && *p != NULL; p++) | |
1286 | { | |
1287 | arelent *q = *p; | |
1288 | ||
1289 | if (q->sym_ptr_ptr != NULL | |
1290 | && *q->sym_ptr_ptr != NULL | |
1291 | && strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), info->symbol) == 0) | |
1292 | { | |
1293 | /* We found a reloc for the symbol we are looking for. */ | |
300475fe HPN |
1294 | einfo ("%C: %s%s\n", abfd, sec, q->address, _("warning: "), |
1295 | info->warning); | |
b34976b6 | 1296 | info->found = TRUE; |
252b5132 RH |
1297 | break; |
1298 | } | |
1299 | } | |
1300 | ||
1301 | free (relpp); | |
1302 | } | |
1303 | ||
1304 | /* This is called when an undefined symbol is found. */ | |
1305 | ||
b34976b6 | 1306 | static bfd_boolean |
1579bae1 AM |
1307 | undefined_symbol (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1308 | const char *name, | |
1309 | bfd *abfd, | |
1310 | asection *section, | |
1311 | bfd_vma address, | |
0b28295d | 1312 | bfd_boolean error) |
252b5132 RH |
1313 | { |
1314 | static char *error_name; | |
1315 | static unsigned int error_count; | |
1316 | ||
1317 | #define MAX_ERRORS_IN_A_ROW 5 | |
1318 | ||
1319 | if (config.warn_once) | |
1320 | { | |
1321 | static struct bfd_hash_table *hash; | |
1322 | ||
1323 | /* Only warn once about a particular undefined symbol. */ | |
252b5132 RH |
1324 | if (hash == NULL) |
1325 | { | |
1579bae1 | 1326 | hash = xmalloc (sizeof (struct bfd_hash_table)); |
252b5132 RH |
1327 | if (! bfd_hash_table_init (hash, bfd_hash_newfunc)) |
1328 | einfo (_("%F%P: bfd_hash_table_init failed: %E\n")); | |
1329 | } | |
1330 | ||
b34976b6 AM |
1331 | if (bfd_hash_lookup (hash, name, FALSE, FALSE) != NULL) |
1332 | return TRUE; | |
252b5132 | 1333 | |
b34976b6 | 1334 | if (bfd_hash_lookup (hash, name, TRUE, TRUE) == NULL) |
252b5132 RH |
1335 | einfo (_("%F%P: bfd_hash_lookup failed: %E\n")); |
1336 | } | |
1337 | ||
1338 | /* We never print more than a reasonable number of errors in a row | |
1339 | for a single symbol. */ | |
1579bae1 | 1340 | if (error_name != NULL |
252b5132 RH |
1341 | && strcmp (name, error_name) == 0) |
1342 | ++error_count; | |
1343 | else | |
1344 | { | |
1345 | error_count = 0; | |
1579bae1 | 1346 | if (error_name != NULL) |
252b5132 | 1347 | free (error_name); |
d1b2b2dc | 1348 | error_name = xstrdup (name); |
252b5132 RH |
1349 | } |
1350 | ||
1351 | if (section != NULL) | |
1352 | { | |
1353 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1354 | { |
0b28295d ILT |
1355 | if (error) |
1356 | einfo (_("%X%C: undefined reference to `%T'\n"), | |
1357 | abfd, section, address, name); | |
1358 | else | |
1359 | einfo (_("%C: warning: undefined reference to `%T'\n"), | |
1360 | abfd, section, address, name); | |
b6f29aaa | 1361 | } |
252b5132 | 1362 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1363 | { |
1364 | if (error) | |
1365 | einfo (_("%X%D: more undefined references to `%T' follow\n"), | |
1366 | abfd, section, address, name); | |
1367 | else | |
1368 | einfo (_("%D: warning: more undefined references to `%T' follow\n"), | |
1369 | abfd, section, address, name); | |
1370 | } | |
1371 | else if (error) | |
1372 | einfo ("%X"); | |
252b5132 RH |
1373 | } |
1374 | else | |
1375 | { | |
1376 | if (error_count < MAX_ERRORS_IN_A_ROW) | |
b6f29aaa | 1377 | { |
0b28295d ILT |
1378 | if (error) |
1379 | einfo (_("%X%B: undefined reference to `%T'\n"), | |
1380 | abfd, name); | |
1381 | else | |
1382 | einfo (_("%B: warning: undefined reference to `%T'\n"), | |
1383 | abfd, name); | |
b6f29aaa | 1384 | } |
252b5132 | 1385 | else if (error_count == MAX_ERRORS_IN_A_ROW) |
0b28295d ILT |
1386 | { |
1387 | if (error) | |
1388 | einfo (_("%X%B: more undefined references to `%T' follow\n"), | |
1389 | abfd, name); | |
1390 | else | |
1391 | einfo (_("%B: warning: more undefined references to `%T' follow\n"), | |
1392 | abfd, name); | |
1393 | } | |
1394 | else if (error) | |
1395 | einfo ("%X"); | |
252b5132 RH |
1396 | } |
1397 | ||
b34976b6 | 1398 | return TRUE; |
252b5132 RH |
1399 | } |
1400 | ||
8aae64e6 AO |
1401 | /* Counter to limit the number of relocation overflow error messages |
1402 | to print. Errors are printed as it is decremented. When it's | |
1403 | called and the counter is zero, a final message is printed | |
1404 | indicating more relocations were omitted. When it gets to -1, no | |
1405 | such errors are printed. If it's initially set to a value less | |
1406 | than -1, all such errors will be printed (--verbose does this). */ | |
1407 | ||
1408 | int overflow_cutoff_limit = 10; | |
1409 | ||
252b5132 RH |
1410 | /* This is called when a reloc overflows. */ |
1411 | ||
b34976b6 | 1412 | static bfd_boolean |
1579bae1 | 1413 | reloc_overflow (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
dfeffb9f | 1414 | struct bfd_link_hash_entry *entry, |
1579bae1 AM |
1415 | const char *name, |
1416 | const char *reloc_name, | |
1417 | bfd_vma addend, | |
1418 | bfd *abfd, | |
1419 | asection *section, | |
1420 | bfd_vma address) | |
252b5132 | 1421 | { |
8aae64e6 AO |
1422 | if (overflow_cutoff_limit == -1) |
1423 | return TRUE; | |
1424 | ||
1579bae1 | 1425 | if (abfd == NULL) |
252b5132 RH |
1426 | einfo (_("%P%X: generated")); |
1427 | else | |
1428 | einfo ("%X%C:", abfd, section, address); | |
8aae64e6 AO |
1429 | |
1430 | if (overflow_cutoff_limit >= 0 | |
1431 | && overflow_cutoff_limit-- == 0) | |
1432 | { | |
1433 | einfo (_(" additional relocation overflows omitted from the output\n")); | |
1434 | return TRUE; | |
1435 | } | |
1436 | ||
dfeffb9f L |
1437 | if (entry) |
1438 | { | |
1439 | while (entry->type == bfd_link_hash_indirect | |
1440 | || entry->type == bfd_link_hash_warning) | |
1441 | entry = entry->u.i.link; | |
1442 | switch (entry->type) | |
1443 | { | |
1444 | case bfd_link_hash_undefined: | |
1445 | case bfd_link_hash_undefweak: | |
1446 | einfo (_(" relocation truncated to fit: %s against undefined symbol `%T'"), | |
1447 | reloc_name, entry->root.string); | |
1448 | break; | |
1449 | case bfd_link_hash_defined: | |
1450 | case bfd_link_hash_defweak: | |
1451 | einfo (_(" relocation truncated to fit: %s against symbol `%T' defined in %A section in %B"), | |
1452 | reloc_name, entry->root.string, | |
a6e1b90f L |
1453 | entry->u.def.section, |
1454 | entry->u.def.section == bfd_abs_section_ptr | |
1455 | ? output_bfd : entry->u.def.section->owner); | |
dfeffb9f L |
1456 | break; |
1457 | default: | |
1458 | abort (); | |
1459 | break; | |
1460 | } | |
1461 | } | |
1462 | else | |
1463 | einfo (_(" relocation truncated to fit: %s against `%T'"), | |
1464 | reloc_name, name); | |
252b5132 RH |
1465 | if (addend != 0) |
1466 | einfo ("+%v", addend); | |
1467 | einfo ("\n"); | |
b34976b6 | 1468 | return TRUE; |
252b5132 RH |
1469 | } |
1470 | ||
1471 | /* This is called when a dangerous relocation is made. */ | |
1472 | ||
b34976b6 | 1473 | static bfd_boolean |
1579bae1 AM |
1474 | reloc_dangerous (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1475 | const char *message, | |
1476 | bfd *abfd, | |
1477 | asection *section, | |
1478 | bfd_vma address) | |
252b5132 | 1479 | { |
1579bae1 | 1480 | if (abfd == NULL) |
252b5132 RH |
1481 | einfo (_("%P%X: generated")); |
1482 | else | |
1483 | einfo ("%X%C:", abfd, section, address); | |
1484 | einfo (_("dangerous relocation: %s\n"), message); | |
b34976b6 | 1485 | return TRUE; |
252b5132 RH |
1486 | } |
1487 | ||
1488 | /* This is called when a reloc is being generated attached to a symbol | |
1489 | that is not being output. */ | |
1490 | ||
b34976b6 | 1491 | static bfd_boolean |
1579bae1 AM |
1492 | unattached_reloc (struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1493 | const char *name, | |
1494 | bfd *abfd, | |
1495 | asection *section, | |
1496 | bfd_vma address) | |
252b5132 | 1497 | { |
1579bae1 | 1498 | if (abfd == NULL) |
252b5132 RH |
1499 | einfo (_("%P%X: generated")); |
1500 | else | |
1501 | einfo ("%X%C:", abfd, section, address); | |
1502 | einfo (_(" reloc refers to symbol `%T' which is not being output\n"), name); | |
b34976b6 | 1503 | return TRUE; |
252b5132 RH |
1504 | } |
1505 | ||
1506 | /* This is called if link_info.notice_all is set, or when a symbol in | |
1507 | link_info.notice_hash is found. Symbols are put in notice_hash | |
1508 | using the -y option. */ | |
1509 | ||
b34976b6 | 1510 | static bfd_boolean |
1579bae1 AM |
1511 | notice (struct bfd_link_info *info, |
1512 | const char *name, | |
1513 | bfd *abfd, | |
1514 | asection *section, | |
1515 | bfd_vma value) | |
252b5132 RH |
1516 | { |
1517 | if (! info->notice_all | |
1518 | || (info->notice_hash != NULL | |
b34976b6 | 1519 | && bfd_hash_lookup (info->notice_hash, name, FALSE, FALSE) != NULL)) |
252b5132 RH |
1520 | { |
1521 | if (bfd_is_und_section (section)) | |
1522 | einfo ("%B: reference to %s\n", abfd, name); | |
1523 | else | |
1524 | einfo ("%B: definition of %s\n", abfd, name); | |
1525 | } | |
1526 | ||
1527 | if (command_line.cref || nocrossref_list != NULL) | |
1528 | add_cref (name, abfd, section, value); | |
1529 | ||
b34976b6 | 1530 | return TRUE; |
252b5132 | 1531 | } |