Commit | Line | Data |
---|---|---|
252b5132 RH |
1 | # This shell script emits a C file. -*- C -*- |
2 | # It does some substitutions. | |
1220a729 | 3 | ELFSIZE=32 |
252b5132 RH |
4 | cat >e${EMULATION_NAME}.c <<EOF |
5 | /* This file is is generated by a shell script. DO NOT EDIT! */ | |
6 | ||
7 | /* emulate the original gld for the given ${EMULATION_NAME} | |
b71e2778 AM |
8 | Copyright (C) 1991, 93, 96, 97, 98, 99, 2000 |
9 | Free Software Foundation, Inc. | |
252b5132 RH |
10 | Written by Steve Chamberlain steve@cygnus.com |
11 | ||
12 | This file is part of GLD, the Gnu Linker. | |
13 | ||
14 | This program is free software; you can redistribute it and/or modify | |
15 | it under the terms of the GNU General Public License as published by | |
16 | the Free Software Foundation; either version 2 of the License, or | |
17 | (at your option) any later version. | |
18 | ||
19 | This program is distributed in the hope that it will be useful, | |
20 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
22 | GNU General Public License for more details. | |
23 | ||
24 | You should have received a copy of the GNU General Public License | |
25 | along with this program; if not, write to the Free Software | |
26 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
27 | ||
28 | #define TARGET_IS_${EMULATION_NAME} | |
29 | ||
30 | #include "bfd.h" | |
31 | #include "sysdep.h" | |
29c4c6b5 NC |
32 | |
33 | #include <ctype.h> | |
34 | ||
252b5132 RH |
35 | #include "bfdlink.h" |
36 | #include "getopt.h" | |
37 | ||
38 | #include "ld.h" | |
39 | #include "ldmain.h" | |
252b5132 RH |
40 | #include "ldmisc.h" |
41 | ||
42 | #include "ldexp.h" | |
43 | #include "ldlang.h" | |
b71e2778 AM |
44 | #include "ldfile.h" |
45 | #include "ldemul.h" | |
1220a729 | 46 | #include "ldgram.h" |
252b5132 | 47 | |
1220a729 NC |
48 | static boolean gld${EMULATION_NAME}_open_dynamic_archive |
49 | PARAMS ((const char *, search_dirs_type *, lang_input_statement_type *)); | |
50 | static void gld${EMULATION_NAME}_after_open PARAMS ((void)); | |
51 | static void gld${EMULATION_NAME}_check_needed | |
52 | PARAMS ((lang_input_statement_type *)); | |
53 | static void gld${EMULATION_NAME}_stat_needed | |
54 | PARAMS ((lang_input_statement_type *)); | |
55 | static boolean gld${EMULATION_NAME}_search_needed | |
56 | PARAMS ((const char *, const char *, int)); | |
57 | static boolean gld${EMULATION_NAME}_try_needed PARAMS ((const char *, int)); | |
58 | static void gld${EMULATION_NAME}_vercheck | |
59 | PARAMS ((lang_input_statement_type *)); | |
60 | static void gld${EMULATION_NAME}_find_statement_assignment | |
61 | PARAMS ((lang_statement_union_type *)); | |
62 | static void gld${EMULATION_NAME}_find_exp_assignment PARAMS ((etree_type *)); | |
63 | static boolean gld${EMULATION_NAME}_place_orphan | |
64 | PARAMS ((lang_input_statement_type *, asection *)); | |
aea4bd9d | 65 | static lang_output_section_statement_type *output_rel_find PARAMS ((void)); |
252b5132 RH |
66 | static void gld${EMULATION_NAME}_before_parse PARAMS ((void)); |
67 | static void gld${EMULATION_NAME}_before_allocation PARAMS ((void)); | |
68 | static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile)); | |
7ca69e9e NC |
69 | static int gld${EMULATION_NAME}_parse_args PARAMS((int, char **)); |
70 | static void gld${EMULATION_NAME}_list_options PARAMS ((FILE *)); | |
1ac6a752 | 71 | static void gld${EMULATION_NAME}_finish PARAMS ((void)); |
7ca69e9e NC |
72 | |
73 | \f | |
74 | static int no_pipeline_knowledge = 0; | |
6f798e5c NC |
75 | static char * thumb_entry_symbol = NULL; |
76 | ||
77 | #define OPTION_THUMB_ENTRY 301 | |
7ca69e9e NC |
78 | |
79 | static struct option longopts[] = | |
80 | { | |
81 | { "no-pipeline-knowledge", no_argument, NULL, 'p'}, | |
6f798e5c | 82 | { "thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY}, |
7ca69e9e NC |
83 | { NULL, no_argument, NULL, 0 } |
84 | }; | |
85 | ||
86 | static void | |
87 | gld${EMULATION_NAME}_list_options (file) | |
88 | FILE * file; | |
89 | { | |
90 | fprintf (file, _(" -p --no-pipeline-knowledge Stop the linker knowing about the pipeline length\n")); | |
6f798e5c | 91 | fprintf (file, _(" --thumb-entry=<sym> Set the entry point to be Thumb symbol <sym>\n")); |
7ca69e9e NC |
92 | } |
93 | ||
94 | static int | |
95 | gld${EMULATION_NAME}_parse_args (argc, argv) | |
96 | int argc; | |
97 | char ** argv; | |
98 | { | |
99 | int longind; | |
100 | int optc; | |
101 | int prevoptind = optind; | |
102 | int prevopterr = opterr; | |
103 | int wanterror; | |
104 | static int lastoptind = -1; | |
105 | ||
106 | if (lastoptind != optind) | |
107 | opterr = 0; | |
108 | ||
109 | wanterror = opterr; | |
110 | lastoptind = optind; | |
111 | ||
112 | optc = getopt_long_only (argc, argv, "-p", longopts, & longind); | |
113 | opterr = prevopterr; | |
114 | ||
115 | switch (optc) | |
116 | { | |
117 | default: | |
118 | if (wanterror) | |
119 | xexit (1); | |
120 | optind = prevoptind; | |
121 | return 0; | |
122 | ||
123 | case 'p': | |
124 | no_pipeline_knowledge = 1; | |
125 | break; | |
6f798e5c NC |
126 | |
127 | case OPTION_THUMB_ENTRY: | |
128 | thumb_entry_symbol = optarg; | |
129 | break; | |
7ca69e9e NC |
130 | } |
131 | ||
132 | return 1; | |
133 | } | |
134 | \f | |
252b5132 RH |
135 | |
136 | static void | |
137 | gld${EMULATION_NAME}_before_parse () | |
138 | { | |
139 | #ifndef TARGET_ /* I.e., if not generic. */ | |
140 | ldfile_set_output_arch ("`echo ${ARCH}`"); | |
141 | #endif /* not TARGET_ */ | |
31ce0628 NC |
142 | config.dynamic_link = ${DYNAMIC_LINK-true}; |
143 | config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo true ; else echo false ; fi`; | |
252b5132 RH |
144 | } |
145 | ||
1220a729 NC |
146 | /* Try to open a dynamic archive. This is where we know that ELF |
147 | dynamic libraries have an extension of .so. */ | |
148 | ||
149 | static boolean | |
150 | gld${EMULATION_NAME}_open_dynamic_archive (arch, search, entry) | |
151 | const char *arch; | |
152 | search_dirs_type *search; | |
153 | lang_input_statement_type *entry; | |
154 | { | |
155 | const char *filename; | |
156 | char *string; | |
157 | ||
158 | if (! entry->is_archive) | |
159 | return false; | |
160 | ||
161 | filename = entry->filename; | |
162 | ||
163 | string = (char *) xmalloc (strlen (search->name) | |
164 | + strlen (filename) | |
165 | + strlen (arch) | |
166 | + sizeof "/lib.so"); | |
167 | ||
168 | sprintf (string, "%s/lib%s%s.so", search->name, filename, arch); | |
169 | ||
170 | if (! ldfile_try_open_bfd (string, entry)) | |
171 | { | |
172 | free (string); | |
173 | return false; | |
174 | } | |
175 | ||
176 | entry->filename = string; | |
177 | ||
178 | /* We have found a dynamic object to include in the link. The ELF | |
179 | backend linker will create a DT_NEEDED entry in the .dynamic | |
180 | section naming this file. If this file includes a DT_SONAME | |
181 | entry, it will be used. Otherwise, the ELF linker will just use | |
182 | the name of the file. For an archive found by searching, like | |
183 | this one, the DT_NEEDED entry should consist of just the name of | |
184 | the file, without the path information used to find it. Note | |
185 | that we only need to do this if we have a dynamic object; an | |
186 | archive will never be referenced by a DT_NEEDED entry. | |
187 | ||
188 | FIXME: This approach--using bfd_elf_set_dt_needed_name--is not | |
189 | very pretty. I haven't been able to think of anything that is | |
190 | pretty, though. */ | |
191 | if (bfd_check_format (entry->the_bfd, bfd_object) | |
192 | && (entry->the_bfd->flags & DYNAMIC) != 0) | |
193 | { | |
194 | char *needed_name; | |
195 | ||
196 | ASSERT (entry->is_archive && entry->search_dirs_flag); | |
197 | needed_name = (char *) xmalloc (strlen (filename) | |
198 | + strlen (arch) | |
199 | + sizeof "lib.so"); | |
200 | sprintf (needed_name, "lib%s%s.so", filename, arch); | |
201 | bfd_elf_set_dt_needed_name (entry->the_bfd, needed_name); | |
202 | } | |
203 | ||
204 | return true; | |
205 | } | |
206 | ||
207 | EOF | |
208 | if [ "x${host}" = "x${target}" ] ; then | |
f97f7300 RH |
209 | case " ${EMULATION_LIBPATH} " in |
210 | *" ${EMULATION_NAME} "*) | |
1220a729 NC |
211 | cat >>e${EMULATION_NAME}.c <<EOF |
212 | ||
213 | /* For a native linker, check the file /etc/ld.so.conf for directories | |
214 | in which we may find shared libraries. /etc/ld.so.conf is really | |
215 | only meaningful on Linux, but we check it on other systems anyhow. */ | |
216 | ||
217 | static boolean gld${EMULATION_NAME}_check_ld_so_conf | |
218 | PARAMS ((const char *, int)); | |
219 | ||
220 | static boolean | |
221 | gld${EMULATION_NAME}_check_ld_so_conf (name, force) | |
222 | const char *name; | |
223 | int force; | |
224 | { | |
225 | static boolean initialized; | |
226 | static char *ld_so_conf; | |
227 | ||
228 | if (! initialized) | |
229 | { | |
230 | FILE *f; | |
231 | ||
232 | f = fopen ("/etc/ld.so.conf", FOPEN_RT); | |
233 | if (f != NULL) | |
234 | { | |
235 | char *b; | |
236 | size_t len, alloc; | |
237 | int c; | |
238 | ||
239 | len = 0; | |
240 | alloc = 100; | |
241 | b = (char *) xmalloc (alloc); | |
242 | ||
243 | while ((c = getc (f)) != EOF) | |
244 | { | |
245 | if (len + 1 >= alloc) | |
246 | { | |
247 | alloc *= 2; | |
248 | b = (char *) xrealloc (b, alloc); | |
249 | } | |
250 | if (c != ':' | |
251 | && c != ' ' | |
252 | && c != '\t' | |
253 | && c != '\n' | |
254 | && c != ',') | |
255 | { | |
256 | b[len] = c; | |
257 | ++len; | |
258 | } | |
259 | else | |
260 | { | |
261 | if (len > 0 && b[len - 1] != ':') | |
262 | { | |
263 | b[len] = ':'; | |
264 | ++len; | |
265 | } | |
266 | } | |
267 | } | |
268 | ||
269 | if (len > 0 && b[len - 1] == ':') | |
270 | --len; | |
271 | ||
272 | if (len > 0) | |
273 | b[len] = '\0'; | |
274 | else | |
275 | { | |
276 | free (b); | |
277 | b = NULL; | |
278 | } | |
279 | ||
280 | fclose (f); | |
281 | ||
282 | ld_so_conf = b; | |
283 | } | |
284 | ||
285 | initialized = true; | |
286 | } | |
287 | ||
288 | if (ld_so_conf == NULL) | |
289 | return false; | |
290 | ||
291 | return gld${EMULATION_NAME}_search_needed (ld_so_conf, name, force); | |
292 | } | |
293 | ||
294 | EOF | |
f97f7300 RH |
295 | ;; |
296 | esac | |
1220a729 NC |
297 | fi |
298 | cat >>e${EMULATION_NAME}.c <<EOF | |
299 | ||
300 | /* These variables are required to pass information back and forth | |
301 | between after_open and check_needed and stat_needed and vercheck. */ | |
302 | ||
303 | static struct bfd_link_needed_list *global_needed; | |
304 | static struct stat global_stat; | |
305 | static boolean global_found; | |
306 | static struct bfd_link_needed_list *global_vercheck_needed; | |
307 | static boolean global_vercheck_failed; | |
308 | ||
309 | static void | |
310 | gld${EMULATION_NAME}_after_open () | |
311 | { | |
312 | struct bfd_link_needed_list *needed, *l; | |
313 | ||
f11523b0 | 314 | if (strstr (bfd_get_target (output_bfd), "arm") == NULL) |
1220a729 | 315 | { |
f11523b0 NC |
316 | /* The arm backend needs special fields in the output hash structure. |
317 | These will only be created if the output format is an arm format, | |
318 | hence we do not support linking and changing output formats at the | |
319 | same time. Use a link followed by objcopy to change output formats. */ | |
320 | einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n"); | |
321 | return; | |
1220a729 NC |
322 | } |
323 | ||
f11523b0 NC |
324 | { |
325 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
326 | { | |
327 | /* The interworking bfd must be the last one to be processed */ | |
328 | if (!is->next) | |
329 | bfd_elf32_arm_get_bfd_for_interworking (is->the_bfd, & link_info); | |
330 | } | |
331 | } | |
332 | ||
1220a729 NC |
333 | /* We only need to worry about this when doing a final link. */ |
334 | if (link_info.relocateable || link_info.shared) | |
335 | return; | |
336 | ||
337 | /* Get the list of files which appear in DT_NEEDED entries in | |
338 | dynamic objects included in the link (often there will be none). | |
339 | For each such file, we want to track down the corresponding | |
340 | library, and include the symbol table in the link. This is what | |
341 | the runtime dynamic linker will do. Tracking the files down here | |
342 | permits one dynamic object to include another without requiring | |
343 | special action by the person doing the link. Note that the | |
344 | needed list can actually grow while we are stepping through this | |
345 | loop. */ | |
346 | needed = bfd_elf_get_needed_list (output_bfd, &link_info); | |
347 | for (l = needed; l != NULL; l = l->next) | |
348 | { | |
349 | struct bfd_link_needed_list *ll; | |
350 | int force; | |
351 | ||
352 | /* If we've already seen this file, skip it. */ | |
353 | for (ll = needed; ll != l; ll = ll->next) | |
354 | if (strcmp (ll->name, l->name) == 0) | |
355 | break; | |
356 | if (ll != l) | |
357 | continue; | |
358 | ||
359 | /* See if this file was included in the link explicitly. */ | |
360 | global_needed = l; | |
361 | global_found = false; | |
362 | lang_for_each_input_file (gld${EMULATION_NAME}_check_needed); | |
363 | if (global_found) | |
364 | continue; | |
365 | ||
366 | /* We need to find this file and include the symbol table. We | |
367 | want to search for the file in the same way that the dynamic | |
368 | linker will search. That means that we want to use | |
369 | rpath_link, rpath, then the environment variable | |
370 | LD_LIBRARY_PATH (native only), then the linker script | |
371 | LIB_SEARCH_DIRS. We do not search using the -L arguments. | |
372 | ||
373 | We search twice. The first time, we skip objects which may | |
374 | introduce version mismatches. The second time, we force | |
375 | their use. See gld${EMULATION_NAME}_vercheck comment. */ | |
376 | for (force = 0; force < 2; force++) | |
377 | { | |
378 | const char *lib_path; | |
379 | size_t len; | |
380 | search_dirs_type *search; | |
381 | ||
382 | if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link, | |
383 | l->name, force)) | |
384 | break; | |
385 | if (gld${EMULATION_NAME}_search_needed (command_line.rpath, | |
386 | l->name, force)) | |
387 | break; | |
388 | if (command_line.rpath_link == NULL | |
389 | && command_line.rpath == NULL) | |
390 | { | |
391 | lib_path = (const char *) getenv ("LD_RUN_PATH"); | |
392 | if (gld${EMULATION_NAME}_search_needed (lib_path, l->name, | |
393 | force)) | |
394 | break; | |
395 | } | |
396 | EOF | |
397 | if [ "x${host}" = "x${target}" ] ; then | |
f97f7300 RH |
398 | case " ${EMULATION_LIBPATH} " in |
399 | *" ${EMULATION_NAME} "*) | |
1220a729 NC |
400 | cat >>e${EMULATION_NAME}.c <<EOF |
401 | lib_path = (const char *) getenv ("LD_LIBRARY_PATH"); | |
402 | if (gld${EMULATION_NAME}_search_needed (lib_path, l->name, force)) | |
403 | break; | |
404 | EOF | |
f97f7300 RH |
405 | ;; |
406 | esac | |
1220a729 NC |
407 | fi |
408 | cat >>e${EMULATION_NAME}.c <<EOF | |
409 | len = strlen (l->name); | |
410 | for (search = search_head; search != NULL; search = search->next) | |
411 | { | |
412 | char *filename; | |
413 | ||
414 | if (search->cmdline) | |
415 | continue; | |
416 | filename = (char *) xmalloc (strlen (search->name) + len + 2); | |
417 | sprintf (filename, "%s/%s", search->name, l->name); | |
418 | if (gld${EMULATION_NAME}_try_needed (filename, force)) | |
419 | break; | |
420 | free (filename); | |
421 | } | |
422 | if (search != NULL) | |
423 | break; | |
424 | EOF | |
425 | if [ "x${host}" = "x${target}" ] ; then | |
f97f7300 RH |
426 | case " ${EMULATION_LIBPATH} " in |
427 | *" ${EMULATION_NAME} "*) | |
1220a729 NC |
428 | cat >>e${EMULATION_NAME}.c <<EOF |
429 | if (gld${EMULATION_NAME}_check_ld_so_conf (l->name, force)) | |
430 | break; | |
431 | EOF | |
f97f7300 RH |
432 | ;; |
433 | esac | |
1220a729 NC |
434 | fi |
435 | cat >>e${EMULATION_NAME}.c <<EOF | |
436 | } | |
437 | ||
438 | if (force < 2) | |
439 | continue; | |
440 | ||
441 | einfo ("%P: warning: %s, needed by %B, not found (try using --rpath)\n", | |
442 | l->name, l->by); | |
443 | } | |
444 | } | |
445 | ||
446 | /* Search for a needed file in a path. */ | |
447 | ||
448 | static boolean | |
449 | gld${EMULATION_NAME}_search_needed (path, name, force) | |
450 | const char *path; | |
451 | const char *name; | |
452 | int force; | |
453 | { | |
454 | const char *s; | |
455 | size_t len; | |
456 | ||
457 | if (path == NULL || *path == '\0') | |
458 | return false; | |
459 | len = strlen (name); | |
460 | while (1) | |
461 | { | |
462 | char *filename, *sset; | |
463 | ||
464 | s = strchr (path, ':'); | |
465 | if (s == NULL) | |
466 | s = path + strlen (path); | |
467 | ||
468 | filename = (char *) xmalloc (s - path + len + 2); | |
469 | if (s == path) | |
470 | sset = filename; | |
471 | else | |
472 | { | |
473 | memcpy (filename, path, s - path); | |
474 | filename[s - path] = '/'; | |
475 | sset = filename + (s - path) + 1; | |
476 | } | |
477 | strcpy (sset, name); | |
478 | ||
479 | if (gld${EMULATION_NAME}_try_needed (filename, force)) | |
480 | return true; | |
481 | ||
482 | free (filename); | |
483 | ||
484 | if (*s == '\0') | |
485 | break; | |
486 | path = s + 1; | |
487 | } | |
488 | ||
489 | return false; | |
490 | } | |
491 | ||
492 | /* This function is called for each possible name for a dynamic object | |
493 | named by a DT_NEEDED entry. The FORCE parameter indicates whether | |
494 | to skip the check for a conflicting version. */ | |
495 | ||
496 | static boolean | |
497 | gld${EMULATION_NAME}_try_needed (name, force) | |
498 | const char *name; | |
499 | int force; | |
500 | { | |
501 | bfd *abfd; | |
502 | ||
503 | abfd = bfd_openr (name, bfd_get_target (output_bfd)); | |
504 | if (abfd == NULL) | |
505 | return false; | |
506 | if (! bfd_check_format (abfd, bfd_object)) | |
507 | { | |
508 | (void) bfd_close (abfd); | |
509 | return false; | |
510 | } | |
511 | if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0) | |
512 | { | |
513 | (void) bfd_close (abfd); | |
514 | return false; | |
515 | } | |
516 | ||
517 | /* Check whether this object would include any conflicting library | |
518 | versions. If FORCE is set, then we skip this check; we use this | |
519 | the second time around, if we couldn't find any compatible | |
520 | instance of the shared library. */ | |
521 | ||
522 | if (! force) | |
523 | { | |
524 | struct bfd_link_needed_list *needed; | |
525 | ||
526 | if (! bfd_elf_get_bfd_needed_list (abfd, &needed)) | |
527 | einfo ("%F%P:%B: bfd_elf_get_bfd_needed_list failed: %E\n", abfd); | |
528 | ||
529 | if (needed != NULL) | |
530 | { | |
531 | global_vercheck_needed = needed; | |
532 | global_vercheck_failed = false; | |
533 | lang_for_each_input_file (gld${EMULATION_NAME}_vercheck); | |
534 | if (global_vercheck_failed) | |
535 | { | |
536 | (void) bfd_close (abfd); | |
537 | /* Return false to force the caller to move on to try | |
538 | another file on the search path. */ | |
539 | return false; | |
540 | } | |
541 | ||
542 | /* But wait! It gets much worse. On Linux, if a shared | |
543 | library does not use libc at all, we are supposed to skip | |
544 | it the first time around in case we encounter a shared | |
545 | library later on with the same name which does use the | |
546 | version of libc that we want. This is much too horrible | |
547 | to use on any system other than Linux. */ | |
548 | ||
549 | EOF | |
550 | case ${target} in | |
551 | *-*-linux-gnu*) | |
552 | cat >>e${EMULATION_NAME}.c <<EOF | |
553 | { | |
554 | struct bfd_link_needed_list *l; | |
555 | ||
556 | for (l = needed; l != NULL; l = l->next) | |
557 | if (strncmp (l->name, "libc.so", 7) == 0) | |
558 | break; | |
559 | if (l == NULL) | |
560 | { | |
561 | (void) bfd_close (abfd); | |
562 | return false; | |
563 | } | |
564 | } | |
565 | ||
566 | EOF | |
567 | ;; | |
568 | esac | |
569 | cat >>e${EMULATION_NAME}.c <<EOF | |
570 | } | |
571 | } | |
572 | ||
573 | /* We've found a dynamic object matching the DT_NEEDED entry. */ | |
574 | ||
575 | /* We have already checked that there is no other input file of the | |
576 | same name. We must now check again that we are not including the | |
577 | same file twice. We need to do this because on many systems | |
578 | libc.so is a symlink to, e.g., libc.so.1. The SONAME entry will | |
579 | reference libc.so.1. If we have already included libc.so, we | |
580 | don't want to include libc.so.1 if they are the same file, and we | |
581 | can only check that using stat. */ | |
582 | ||
583 | if (bfd_stat (abfd, &global_stat) != 0) | |
584 | einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd); | |
585 | global_found = false; | |
586 | lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed); | |
587 | if (global_found) | |
588 | { | |
589 | /* Return true to indicate that we found the file, even though | |
590 | we aren't going to do anything with it. */ | |
591 | return true; | |
592 | } | |
593 | ||
594 | /* Tell the ELF backend that don't want the output file to have a | |
595 | DT_NEEDED entry for this file. */ | |
596 | bfd_elf_set_dt_needed_name (abfd, ""); | |
597 | ||
598 | /* Add this file into the symbol table. */ | |
599 | if (! bfd_link_add_symbols (abfd, &link_info)) | |
600 | einfo ("%F%B: could not read symbols: %E\n", abfd); | |
601 | ||
602 | return true; | |
603 | } | |
604 | ||
605 | /* See if an input file matches a DT_NEEDED entry by name. */ | |
606 | ||
607 | static void | |
608 | gld${EMULATION_NAME}_check_needed (s) | |
609 | lang_input_statement_type *s; | |
610 | { | |
611 | if (global_found) | |
612 | return; | |
613 | ||
614 | if (s->filename != NULL | |
615 | && strcmp (s->filename, global_needed->name) == 0) | |
616 | { | |
617 | global_found = true; | |
618 | return; | |
619 | } | |
620 | ||
621 | if (s->the_bfd != NULL) | |
622 | { | |
623 | const char *soname; | |
624 | ||
625 | soname = bfd_elf_get_dt_soname (s->the_bfd); | |
626 | if (soname != NULL | |
627 | && strcmp (soname, global_needed->name) == 0) | |
628 | { | |
629 | global_found = true; | |
630 | return; | |
631 | } | |
632 | } | |
633 | ||
634 | if (s->search_dirs_flag | |
635 | && s->filename != NULL | |
636 | && strchr (global_needed->name, '/') == NULL) | |
637 | { | |
638 | const char *f; | |
639 | ||
640 | f = strrchr (s->filename, '/'); | |
641 | if (f != NULL | |
642 | && strcmp (f + 1, global_needed->name) == 0) | |
643 | { | |
644 | global_found = true; | |
645 | return; | |
646 | } | |
647 | } | |
648 | } | |
649 | ||
650 | /* See if an input file matches a DT_NEEDED entry by running stat on | |
651 | the file. */ | |
652 | ||
653 | static void | |
654 | gld${EMULATION_NAME}_stat_needed (s) | |
655 | lang_input_statement_type *s; | |
656 | { | |
657 | struct stat st; | |
658 | const char *suffix; | |
659 | const char *soname; | |
660 | const char *f; | |
661 | ||
662 | if (global_found) | |
663 | return; | |
664 | if (s->the_bfd == NULL) | |
665 | return; | |
666 | ||
667 | if (bfd_stat (s->the_bfd, &st) != 0) | |
668 | { | |
669 | einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd); | |
670 | return; | |
671 | } | |
672 | ||
673 | if (st.st_dev == global_stat.st_dev | |
674 | && st.st_ino == global_stat.st_ino) | |
675 | { | |
676 | global_found = true; | |
677 | return; | |
678 | } | |
679 | ||
680 | /* We issue a warning if it looks like we are including two | |
681 | different versions of the same shared library. For example, | |
682 | there may be a problem if -lc picks up libc.so.6 but some other | |
683 | shared library has a DT_NEEDED entry of libc.so.5. This is a | |
684 | hueristic test, and it will only work if the name looks like | |
685 | NAME.so.VERSION. FIXME: Depending on file names is error-prone. | |
686 | If we really want to issue warnings about mixing version numbers | |
687 | of shared libraries, we need to find a better way. */ | |
688 | ||
689 | if (strchr (global_needed->name, '/') != NULL) | |
690 | return; | |
691 | suffix = strstr (global_needed->name, ".so."); | |
692 | if (suffix == NULL) | |
693 | return; | |
694 | suffix += sizeof ".so." - 1; | |
695 | ||
696 | soname = bfd_elf_get_dt_soname (s->the_bfd); | |
697 | if (soname == NULL) | |
698 | soname = s->filename; | |
699 | ||
700 | f = strrchr (soname, '/'); | |
701 | if (f != NULL) | |
702 | ++f; | |
703 | else | |
704 | f = soname; | |
705 | ||
706 | if (strncmp (f, global_needed->name, suffix - global_needed->name) == 0) | |
707 | einfo ("%P: warning: %s, needed by %B, may conflict with %s\n", | |
708 | global_needed->name, global_needed->by, f); | |
709 | } | |
710 | ||
711 | /* On Linux, it's possible to have different versions of the same | |
712 | shared library linked against different versions of libc. The | |
713 | dynamic linker somehow tags which libc version to use in | |
714 | /etc/ld.so.cache, and, based on the libc that it sees in the | |
715 | executable, chooses which version of the shared library to use. | |
716 | ||
717 | We try to do a similar check here by checking whether this shared | |
718 | library needs any other shared libraries which may conflict with | |
719 | libraries we have already included in the link. If it does, we | |
720 | skip it, and try to find another shared library farther on down the | |
721 | link path. | |
722 | ||
723 | This is called via lang_for_each_input_file. | |
724 | GLOBAL_VERCHECK_NEEDED is the list of objects needed by the object | |
725 | which we ar checking. This sets GLOBAL_VERCHECK_FAILED if we find | |
726 | a conflicting version. */ | |
727 | ||
728 | static void | |
729 | gld${EMULATION_NAME}_vercheck (s) | |
730 | lang_input_statement_type *s; | |
731 | { | |
732 | const char *soname, *f; | |
733 | struct bfd_link_needed_list *l; | |
734 | ||
735 | if (global_vercheck_failed) | |
736 | return; | |
737 | if (s->the_bfd == NULL | |
738 | || (bfd_get_file_flags (s->the_bfd) & DYNAMIC) == 0) | |
739 | return; | |
740 | ||
741 | soname = bfd_elf_get_dt_soname (s->the_bfd); | |
742 | if (soname == NULL) | |
743 | soname = bfd_get_filename (s->the_bfd); | |
744 | ||
745 | f = strrchr (soname, '/'); | |
746 | if (f != NULL) | |
747 | ++f; | |
748 | else | |
749 | f = soname; | |
750 | ||
751 | for (l = global_vercheck_needed; l != NULL; l = l->next) | |
752 | { | |
753 | const char *suffix; | |
754 | ||
755 | if (strcmp (f, l->name) == 0) | |
756 | { | |
757 | /* Probably can't happen, but it's an easy check. */ | |
758 | continue; | |
759 | } | |
760 | ||
761 | if (strchr (l->name, '/') != NULL) | |
762 | continue; | |
763 | ||
764 | suffix = strstr (l->name, ".so."); | |
765 | if (suffix == NULL) | |
766 | continue; | |
767 | ||
768 | suffix += sizeof ".so." - 1; | |
769 | ||
770 | if (strncmp (f, l->name, suffix - l->name) == 0) | |
771 | { | |
772 | /* Here we know that S is a dynamic object FOO.SO.VER1, and | |
773 | the object we are considering needs a dynamic object | |
774 | FOO.SO.VER2, and VER1 and VER2 are different. This | |
775 | appears to be a version mismatch, so we tell the caller | |
776 | to try a different version of this library. */ | |
777 | global_vercheck_failed = true; | |
778 | return; | |
779 | } | |
780 | } | |
781 | } | |
782 | ||
783 | /* Place an orphan section. We use this to put random SHF_ALLOC | |
784 | sections in the right segment. */ | |
785 | ||
6a345e87 AM |
786 | struct orphan_save |
787 | { | |
788 | lang_output_section_statement_type *os; | |
5ba47421 | 789 | asection **section; |
6a345e87 AM |
790 | lang_statement_union_type **stmt; |
791 | }; | |
1220a729 NC |
792 | |
793 | /*ARGSUSED*/ | |
794 | static boolean | |
795 | gld${EMULATION_NAME}_place_orphan (file, s) | |
796 | lang_input_statement_type *file; | |
797 | asection *s; | |
798 | { | |
aea4bd9d AM |
799 | static struct orphan_save hold_text; |
800 | static struct orphan_save hold_rodata; | |
801 | static struct orphan_save hold_data; | |
802 | static struct orphan_save hold_bss; | |
803 | static struct orphan_save hold_rel; | |
804 | static struct orphan_save hold_interp; | |
6a345e87 | 805 | struct orphan_save *place; |
1220a729 NC |
806 | lang_statement_list_type *old; |
807 | lang_statement_list_type add; | |
808 | etree_type *address; | |
809 | const char *secname, *ps; | |
810 | const char *outsecname; | |
811 | lang_output_section_statement_type *os; | |
812 | ||
aea4bd9d AM |
813 | secname = bfd_get_section_name (s->owner, s); |
814 | ||
1220a729 | 815 | /* Look through the script to see where to place this section. */ |
aea4bd9d | 816 | os = lang_output_section_find (secname); |
1220a729 | 817 | |
aea4bd9d AM |
818 | if (os != NULL |
819 | && os->bfd_section != NULL | |
820 | && ((s->flags ^ os->bfd_section->flags) & (SEC_LOAD | SEC_ALLOC)) == 0) | |
1220a729 NC |
821 | { |
822 | /* We have already placed a section with this name. */ | |
aea4bd9d | 823 | wild_doit (&os->children, s, os, file); |
1220a729 NC |
824 | return true; |
825 | } | |
826 | ||
aea4bd9d AM |
827 | if (hold_text.os == NULL) |
828 | hold_text.os = lang_output_section_find (".text"); | |
1220a729 NC |
829 | |
830 | /* If this is a final link, then always put .gnu.warning.SYMBOL | |
831 | sections into the .text section to get them out of the way. */ | |
832 | if (! link_info.shared | |
833 | && ! link_info.relocateable | |
834 | && strncmp (secname, ".gnu.warning.", sizeof ".gnu.warning." - 1) == 0 | |
6a345e87 | 835 | && hold_text.os != NULL) |
1220a729 | 836 | { |
6a345e87 | 837 | wild_doit (&hold_text.os->children, s, hold_text.os, file); |
1220a729 NC |
838 | return true; |
839 | } | |
840 | ||
841 | /* Decide which segment the section should go in based on the | |
842 | section name and section flags. We put loadable .note sections | |
843 | right after the .interp section, so that the PT_NOTE segment is | |
844 | stored right after the program headers where the OS can read it | |
845 | in the first page. */ | |
aea4bd9d AM |
846 | #define HAVE_SECTION(hold, name) \ |
847 | (hold.os != NULL || (hold.os = lang_output_section_find (name)) != NULL) | |
848 | ||
1220a729 NC |
849 | if (s->flags & SEC_EXCLUDE) |
850 | return false; | |
5ba47421 AM |
851 | else if ((s->flags & SEC_ALLOC) == 0) |
852 | place = NULL; | |
1220a729 | 853 | else if ((s->flags & SEC_LOAD) != 0 |
6a345e87 | 854 | && strncmp (secname, ".note", 4) == 0 |
aea4bd9d | 855 | && HAVE_SECTION (hold_interp, ".interp")) |
6a345e87 | 856 | place = &hold_interp; |
1220a729 | 857 | else if ((s->flags & SEC_HAS_CONTENTS) == 0 |
aea4bd9d | 858 | && HAVE_SECTION (hold_bss, ".bss")) |
6a345e87 | 859 | place = &hold_bss; |
1220a729 | 860 | else if ((s->flags & SEC_READONLY) == 0 |
aea4bd9d | 861 | && HAVE_SECTION (hold_data, ".data")) |
6a345e87 | 862 | place = &hold_data; |
1220a729 | 863 | else if (strncmp (secname, ".rel", 4) == 0 |
aea4bd9d AM |
864 | && (hold_rel.os != NULL |
865 | || (hold_rel.os = output_rel_find ()) != NULL)) | |
6a345e87 | 866 | place = &hold_rel; |
1220a729 NC |
867 | else if ((s->flags & SEC_CODE) == 0 |
868 | && (s->flags & SEC_READONLY) != 0 | |
aea4bd9d | 869 | && HAVE_SECTION (hold_rodata, ".rodata")) |
6a345e87 | 870 | place = &hold_rodata; |
1220a729 | 871 | else if ((s->flags & SEC_READONLY) != 0 |
6a345e87 AM |
872 | && hold_text.os != NULL) |
873 | place = &hold_text; | |
874 | else | |
01cc8ff8 | 875 | place = NULL; |
1220a729 | 876 | |
aea4bd9d AM |
877 | #undef HAVE_SECTION |
878 | ||
1220a729 NC |
879 | /* Choose a unique name for the section. This will be needed if the |
880 | same section name appears in the input file with different | |
881 | loadable or allocateable characteristics. */ | |
882 | outsecname = secname; | |
883 | if (bfd_get_section_by_name (output_bfd, outsecname) != NULL) | |
884 | { | |
885 | unsigned int len; | |
886 | char *newname; | |
887 | unsigned int i; | |
888 | ||
889 | len = strlen (outsecname); | |
890 | newname = xmalloc (len + 5); | |
891 | strcpy (newname, outsecname); | |
892 | i = 0; | |
893 | do | |
894 | { | |
895 | sprintf (newname + len, "%d", i); | |
896 | ++i; | |
897 | } | |
898 | while (bfd_get_section_by_name (output_bfd, newname) != NULL); | |
899 | ||
900 | outsecname = newname; | |
901 | } | |
902 | ||
5ba47421 | 903 | if (place != NULL) |
1220a729 | 904 | { |
5ba47421 AM |
905 | /* Start building a list of statements for this section. */ |
906 | old = stat_ptr; | |
907 | stat_ptr = &add; | |
908 | lang_list_init (stat_ptr); | |
909 | ||
910 | /* If the name of the section is representable in C, then create | |
911 | symbols to mark the start and the end of the section. */ | |
912 | for (ps = outsecname; *ps != '\0'; ps++) | |
913 | if (! isalnum ((unsigned char) *ps) && *ps != '_') | |
914 | break; | |
915 | if (*ps == '\0' && config.build_constructors) | |
916 | { | |
917 | char *symname; | |
918 | etree_type *e_align; | |
919 | ||
920 | symname = (char *) xmalloc (ps - outsecname + sizeof "__start_"); | |
921 | sprintf (symname, "__start_%s", outsecname); | |
922 | e_align = exp_unop (ALIGN_K, | |
923 | exp_intop ((bfd_vma) 1 << s->alignment_power)); | |
924 | lang_add_assignment (exp_assop ('=', symname, e_align)); | |
925 | } | |
1220a729 NC |
926 | } |
927 | ||
01cc8ff8 | 928 | if (link_info.relocateable || (s->flags & (SEC_LOAD | SEC_ALLOC)) == 0) |
1220a729 | 929 | address = exp_intop ((bfd_vma) 0); |
01cc8ff8 AM |
930 | else |
931 | address = NULL; | |
1220a729 | 932 | |
aea4bd9d AM |
933 | os = lang_enter_output_section_statement (outsecname, address, 0, |
934 | (bfd_vma) 0, | |
935 | (etree_type *) NULL, | |
936 | (etree_type *) NULL, | |
937 | (etree_type *) NULL); | |
1220a729 | 938 | |
1220a729 NC |
939 | wild_doit (&os->children, s, os, file); |
940 | ||
20d04697 L |
941 | lang_leave_output_section_statement |
942 | ((bfd_vma) 0, "*default*", | |
943 | (struct lang_output_section_phdr_list *) NULL, "*default*"); | |
944 | ||
5ba47421 | 945 | if (place != NULL) |
1220a729 | 946 | { |
5ba47421 | 947 | asection *snew, **pps; |
1220a729 | 948 | |
5ba47421 | 949 | stat_ptr = &add; |
1220a729 | 950 | |
5ba47421 AM |
951 | if (*ps == '\0' && config.build_constructors) |
952 | { | |
953 | char *symname; | |
954 | ||
955 | symname = (char *) xmalloc (ps - outsecname + sizeof "__stop_"); | |
956 | sprintf (symname, "__stop_%s", outsecname); | |
957 | lang_add_assignment (exp_assop ('=', symname, | |
958 | exp_nameop (NAME, "."))); | |
959 | } | |
960 | stat_ptr = old; | |
961 | ||
962 | snew = os->bfd_section; | |
963 | if (place->os->bfd_section != NULL || place->section != NULL) | |
964 | { | |
965 | /* Shuffle the section to make the output file look neater. */ | |
966 | if (place->section == NULL) | |
967 | { | |
968 | #if 0 | |
969 | /* Finding the end of the list is a little tricky. We | |
970 | make a wild stab at it by comparing section flags. */ | |
971 | flagword first_flags = place->os->bfd_section->flags; | |
972 | for (pps = &place->os->bfd_section->next; | |
973 | *pps != NULL && (*pps)->flags == first_flags; | |
974 | pps = &(*pps)->next) | |
975 | ; | |
976 | place->section = pps; | |
977 | #else | |
978 | /* Put orphans after the first section on the list. */ | |
979 | place->section = &place->os->bfd_section->next; | |
980 | #endif | |
981 | } | |
982 | ||
983 | /* Unlink the section. */ | |
984 | for (pps = &output_bfd->sections; *pps != snew; pps = &(*pps)->next) | |
985 | ; | |
986 | *pps = snew->next; | |
987 | ||
988 | /* Now tack it on to the "place->os" section list. */ | |
989 | snew->next = *place->section; | |
990 | *place->section = snew; | |
991 | } | |
992 | place->section = &snew->next; /* Save the end of this list. */ | |
993 | ||
994 | if (place->stmt == NULL) | |
01cc8ff8 AM |
995 | { |
996 | /* Put the new statement list right at the head. */ | |
997 | *add.tail = place->os->header.next; | |
998 | place->os->header.next = add.head; | |
999 | } | |
1000 | else | |
1001 | { | |
1002 | /* Put it after the last orphan statement we added. */ | |
1003 | *add.tail = *place->stmt; | |
1004 | *place->stmt = add.head; | |
1005 | } | |
5ba47421 | 1006 | place->stmt = add.tail; /* Save the end of this list. */ |
6a345e87 | 1007 | } |
1220a729 NC |
1008 | |
1009 | return true; | |
1010 | } | |
1011 | ||
aea4bd9d AM |
1012 | /* A variant of lang_output_section_find. */ |
1013 | static lang_output_section_statement_type * | |
1014 | output_rel_find () | |
1220a729 | 1015 | { |
aea4bd9d AM |
1016 | lang_statement_union_type *u; |
1017 | lang_output_section_statement_type *lookup; | |
1220a729 | 1018 | |
aea4bd9d AM |
1019 | for (u = lang_output_section_statement.head; |
1020 | u != (lang_statement_union_type *) NULL; | |
1021 | u = lookup->next) | |
1022 | { | |
1023 | lookup = &u->output_section_statement; | |
1024 | if (strncmp (".rel", lookup->name, 4) == 0 | |
1025 | && lookup->bfd_section != NULL | |
1026 | && (lookup->bfd_section->flags & SEC_ALLOC) != 0) | |
1027 | { | |
1028 | return lookup; | |
1029 | } | |
1030 | } | |
1031 | return (lang_output_section_statement_type *) NULL; | |
1220a729 NC |
1032 | } |
1033 | ||
1034 | /* Look through an expression for an assignment statement. */ | |
1035 | ||
1036 | static void | |
1037 | gld${EMULATION_NAME}_find_exp_assignment (exp) | |
1038 | etree_type *exp; | |
1039 | { | |
1040 | struct bfd_link_hash_entry *h; | |
1041 | ||
1042 | switch (exp->type.node_class) | |
1043 | { | |
1044 | case etree_provide: | |
1045 | h = bfd_link_hash_lookup (link_info.hash, exp->assign.dst, | |
1046 | false, false, false); | |
1047 | if (h == NULL) | |
1048 | break; | |
1049 | ||
1050 | /* We call record_link_assignment even if the symbol is defined. | |
1051 | This is because if it is defined by a dynamic object, we | |
1052 | actually want to use the value defined by the linker script, | |
1053 | not the value from the dynamic object (because we are setting | |
1054 | symbols like etext). If the symbol is defined by a regular | |
1055 | object, then, as it happens, calling record_link_assignment | |
1056 | will do no harm. */ | |
1057 | ||
1058 | /* Fall through. */ | |
1059 | case etree_assign: | |
1060 | if (strcmp (exp->assign.dst, ".") != 0) | |
1061 | { | |
1062 | if (! (bfd_elf${ELFSIZE}_record_link_assignment | |
1063 | (output_bfd, &link_info, exp->assign.dst, | |
1064 | exp->type.node_class == etree_provide ? true : false))) | |
1065 | einfo ("%P%F: failed to record assignment to %s: %E\n", | |
1066 | exp->assign.dst); | |
1067 | } | |
1068 | gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src); | |
1069 | break; | |
1070 | ||
1071 | case etree_binary: | |
1072 | gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs); | |
1073 | gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs); | |
1074 | break; | |
1075 | ||
1076 | case etree_trinary: | |
1077 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond); | |
1078 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs); | |
1079 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs); | |
1080 | break; | |
1081 | ||
1082 | case etree_unary: | |
1083 | gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child); | |
1084 | break; | |
1085 | ||
1086 | default: | |
1087 | break; | |
1088 | } | |
1089 | } | |
1090 | ||
1091 | /* This is called by the before_allocation routine via | |
1092 | lang_for_each_statement. It locates any assignment statements, and | |
1093 | tells the ELF backend about them, in case they are assignments to | |
1094 | symbols which are referred to by dynamic objects. */ | |
1095 | ||
1096 | static void | |
1097 | gld${EMULATION_NAME}_find_statement_assignment (s) | |
1098 | lang_statement_union_type *s; | |
1099 | { | |
1100 | if (s->header.type == lang_assignment_statement_enum) | |
1101 | gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp); | |
1102 | } | |
1103 | ||
252b5132 RH |
1104 | /* This is called after the sections have been attached to output |
1105 | sections, but before any sizes or addresses have been set. */ | |
1106 | ||
1107 | static void | |
1108 | gld${EMULATION_NAME}_before_allocation () | |
1109 | { | |
1220a729 NC |
1110 | const char *rpath; |
1111 | asection *sinterp; | |
1112 | ||
1113 | /* If we are going to make any variable assignments, we need to let | |
1114 | the ELF backend know about them in case the variables are | |
1115 | referred to by dynamic objects. */ | |
1116 | lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment); | |
1117 | ||
1118 | /* Let the ELF backend work out the sizes of any sections required | |
1119 | by dynamic linking. */ | |
1120 | rpath = command_line.rpath; | |
1121 | if (rpath == NULL) | |
1122 | rpath = (const char *) getenv ("LD_RUN_PATH"); | |
1123 | if (! (bfd_elf${ELFSIZE}_size_dynamic_sections | |
1124 | (output_bfd, command_line.soname, rpath, | |
1125 | command_line.export_dynamic, command_line.filter_shlib, | |
1126 | (const char * const *) command_line.auxiliary_filters, | |
1127 | &link_info, &sinterp, lang_elf_version_info))) | |
1128 | einfo ("%P%F: failed to set dynamic section sizes: %E\n"); | |
1129 | ||
1130 | /* Let the user override the dynamic linker we are using. */ | |
1131 | if (command_line.interpreter != NULL | |
1132 | && sinterp != NULL) | |
1133 | { | |
1134 | sinterp->contents = (bfd_byte *) command_line.interpreter; | |
1135 | sinterp->_raw_size = strlen (command_line.interpreter) + 1; | |
1136 | } | |
1137 | ||
1138 | /* Look for any sections named .gnu.warning. As a GNU extensions, | |
1139 | we treat such sections as containing warning messages. We print | |
1140 | out the warning message, and then zero out the section size so | |
1141 | that it does not get copied into the output file. */ | |
1142 | ||
1143 | { | |
1144 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
1145 | { | |
1146 | asection *s; | |
1147 | bfd_size_type sz; | |
1148 | char *msg; | |
1149 | boolean ret; | |
1150 | ||
1151 | if (is->just_syms_flag) | |
1152 | continue; | |
1153 | ||
1154 | s = bfd_get_section_by_name (is->the_bfd, ".gnu.warning"); | |
1155 | if (s == NULL) | |
1156 | continue; | |
1157 | ||
1158 | sz = bfd_section_size (is->the_bfd, s); | |
1159 | msg = xmalloc ((size_t) sz + 1); | |
1160 | if (! bfd_get_section_contents (is->the_bfd, s, msg, (file_ptr) 0, sz)) | |
1161 | einfo ("%F%B: Can't read contents of section .gnu.warning: %E\n", | |
1162 | is->the_bfd); | |
1163 | msg[sz] = '\0'; | |
1164 | ret = link_info.callbacks->warning (&link_info, msg, | |
1165 | (const char *) NULL, | |
1166 | is->the_bfd, (asection *) NULL, | |
1167 | (bfd_vma) 0); | |
1168 | ASSERT (ret); | |
1169 | free (msg); | |
1170 | ||
1171 | /* Clobber the section size, so that we don't waste copying the | |
1172 | warning into the output file. */ | |
1173 | s->_raw_size = 0; | |
1174 | } | |
1175 | } | |
1176 | ||
252b5132 RH |
1177 | /* we should be able to set the size of the interworking stub section */ |
1178 | ||
1179 | /* Here we rummage through the found bfds to collect glue information */ | |
1180 | /* FIXME: should this be based on a command line option? krk@cygnus.com */ | |
1181 | { | |
1182 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
1183 | { | |
7ca69e9e NC |
1184 | if (!bfd_elf32_arm_process_before_allocation (is->the_bfd, & link_info, |
1185 | no_pipeline_knowledge)) | |
252b5132 RH |
1186 | { |
1187 | /* xgettext:c-format */ | |
1188 | einfo (_("Errors encountered processing file %s"), is->filename); | |
1189 | } | |
1190 | } | |
1191 | } | |
1192 | ||
1193 | /* We have seen it all. Allocate it, and carry on */ | |
1194 | bfd_elf32_arm_allocate_interworking_sections (& link_info); | |
1195 | } | |
1196 | ||
6f798e5c NC |
1197 | static void |
1198 | gld${EMULATION_NAME}_finish PARAMS((void)) | |
1199 | { | |
1200 | struct bfd_link_hash_entry * h; | |
1201 | ||
1202 | if (thumb_entry_symbol == NULL) | |
1203 | return; | |
1204 | ||
1205 | h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol, false, false, true); | |
1206 | ||
1207 | if (h != (struct bfd_link_hash_entry *) NULL | |
1208 | && (h->type == bfd_link_hash_defined | |
1209 | || h->type == bfd_link_hash_defweak) | |
1210 | && h->u.def.section->output_section != NULL) | |
1211 | { | |
1212 | static char buffer[32]; | |
1213 | bfd_vma val; | |
1214 | ||
1215 | /* Special procesing is required for a Thumb entry symbol. The | |
1216 | bottom bit of its address must be set. */ | |
1217 | val = (h->u.def.value | |
1218 | + bfd_get_section_vma (output_bfd, | |
1219 | h->u.def.section->output_section) | |
1220 | + h->u.def.section->output_offset); | |
1221 | ||
1222 | val |= 1; | |
1223 | ||
1224 | /* Now convert this value into a string and store it in entry_symbol | |
1225 | where the lang_finish() function will pick it up. */ | |
1226 | buffer[0] = '0'; | |
1227 | buffer[1] = 'x'; | |
1228 | ||
1229 | sprintf_vma (buffer + 2, val); | |
1230 | ||
1231 | if (entry_symbol != NULL && entry_from_cmdline) | |
1232 | einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"), | |
1233 | thumb_entry_symbol, entry_symbol); | |
1234 | entry_symbol = buffer; | |
1235 | } | |
1236 | else | |
1237 | einfo (_("%P: warning: connot find thumb start symbol %s\n"), thumb_entry_symbol); | |
1238 | } | |
1239 | ||
252b5132 RH |
1240 | static char * |
1241 | gld${EMULATION_NAME}_get_script (isfile) | |
1242 | int *isfile; | |
1243 | EOF | |
1244 | ||
1245 | if test -n "$COMPILE_IN" | |
1246 | then | |
1247 | # Scripts compiled in. | |
1248 | ||
1249 | # sed commands to quote an ld script as a C string. | |
597e2591 | 1250 | sc="-f stringify.sed" |
252b5132 RH |
1251 | |
1252 | cat >>e${EMULATION_NAME}.c <<EOF | |
1253 | { | |
1254 | *isfile = 0; | |
1255 | ||
1256 | if (link_info.relocateable == true && config.build_constructors == true) | |
1257 | return | |
1258 | EOF | |
1259 | sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c | |
1260 | echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c | |
1261 | sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c | |
1262 | echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c | |
1263 | sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c | |
1264 | echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c | |
1265 | sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c | |
a0290afa NC |
1266 | if test -n "$GENERATE_SHLIB_SCRIPT" ; then |
1267 | echo ' ; else if (link_info.shared) return' >> e${EMULATION_NAME}.c | |
1268 | sed $sc ldscripts/${EMULATION_NAME}.xs >> e${EMULATION_NAME}.c | |
1269 | fi | |
252b5132 RH |
1270 | echo ' ; else return' >> e${EMULATION_NAME}.c |
1271 | sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c | |
1272 | echo '; }' >> e${EMULATION_NAME}.c | |
1273 | ||
1274 | else | |
1275 | # Scripts read from the filesystem. | |
1276 | ||
1277 | cat >>e${EMULATION_NAME}.c <<EOF | |
1278 | { | |
1279 | *isfile = 1; | |
1280 | ||
1281 | if (link_info.relocateable == true && config.build_constructors == true) | |
1282 | return "ldscripts/${EMULATION_NAME}.xu"; | |
1283 | else if (link_info.relocateable == true) | |
1284 | return "ldscripts/${EMULATION_NAME}.xr"; | |
1285 | else if (!config.text_read_only) | |
1286 | return "ldscripts/${EMULATION_NAME}.xbn"; | |
1287 | else if (!config.magic_demand_paged) | |
1288 | return "ldscripts/${EMULATION_NAME}.xn"; | |
a0290afa NC |
1289 | else if (link_info.shared) |
1290 | return "ldscripts/${EMULATION_NAME}.xs"; | |
252b5132 RH |
1291 | else |
1292 | return "ldscripts/${EMULATION_NAME}.x"; | |
1293 | } | |
1294 | EOF | |
1295 | ||
1296 | fi | |
1297 | ||
1298 | cat >>e${EMULATION_NAME}.c <<EOF | |
1299 | ||
1300 | struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = | |
1301 | { | |
1302 | gld${EMULATION_NAME}_before_parse, | |
1303 | syslib_default, | |
1304 | hll_default, | |
1305 | after_parse_default, | |
1306 | gld${EMULATION_NAME}_after_open, | |
1307 | after_allocation_default, | |
1308 | set_output_arch_default, | |
1309 | ldemul_default_target, | |
1310 | gld${EMULATION_NAME}_before_allocation, | |
1311 | gld${EMULATION_NAME}_get_script, | |
1312 | "${EMULATION_NAME}", | |
1313 | "${OUTPUT_FORMAT}", | |
e1c47aa4 AM |
1314 | gld${EMULATION_NAME}_finish, |
1315 | NULL, /* create output section statements */ | |
1220a729 NC |
1316 | gld${EMULATION_NAME}_open_dynamic_archive, |
1317 | gld${EMULATION_NAME}_place_orphan, | |
e1c47aa4 | 1318 | NULL, /* set symbols */ |
7ca69e9e | 1319 | gld${EMULATION_NAME}_parse_args, |
e1c47aa4 | 1320 | NULL, /* unrecognized file */ |
7ca69e9e | 1321 | gld${EMULATION_NAME}_list_options, |
40d109bf AM |
1322 | NULL, /* recognized file */ |
1323 | NULL /* find_potential_libraries */ | |
252b5132 RH |
1324 | }; |
1325 | EOF |