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 ${EMULATION_NAME} | |
1220a729 | 8 | Copyright (C) 1991, 93, 96, 97, 98, 1999 Free Software Foundation, Inc. |
252b5132 RH |
9 | Written by Steve Chamberlain steve@cygnus.com |
10 | ||
11 | This file is part of GLD, the Gnu Linker. | |
12 | ||
13 | This program is free software; you can redistribute it and/or modify | |
14 | it under the terms of the GNU General Public License as published by | |
15 | the Free Software Foundation; either version 2 of the License, or | |
16 | (at your option) any later version. | |
17 | ||
18 | This program is distributed in the hope that it will be useful, | |
19 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | GNU General Public License for more details. | |
22 | ||
23 | You should have received a copy of the GNU General Public License | |
24 | along with this program; if not, write to the Free Software | |
25 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
26 | ||
27 | #define TARGET_IS_${EMULATION_NAME} | |
28 | ||
29 | #include "bfd.h" | |
30 | #include "sysdep.h" | |
31 | #include "bfdlink.h" | |
32 | #include "getopt.h" | |
33 | ||
34 | #include "ld.h" | |
35 | #include "ldmain.h" | |
36 | #include "ldemul.h" | |
37 | #include "ldfile.h" | |
38 | #include "ldmisc.h" | |
39 | ||
40 | #include "ldexp.h" | |
41 | #include "ldlang.h" | |
1220a729 | 42 | #include "ldgram.h" |
252b5132 | 43 | |
1220a729 NC |
44 | static boolean gld${EMULATION_NAME}_open_dynamic_archive |
45 | PARAMS ((const char *, search_dirs_type *, lang_input_statement_type *)); | |
46 | static void gld${EMULATION_NAME}_after_open PARAMS ((void)); | |
47 | static void gld${EMULATION_NAME}_check_needed | |
48 | PARAMS ((lang_input_statement_type *)); | |
49 | static void gld${EMULATION_NAME}_stat_needed | |
50 | PARAMS ((lang_input_statement_type *)); | |
51 | static boolean gld${EMULATION_NAME}_search_needed | |
52 | PARAMS ((const char *, const char *, int)); | |
53 | static boolean gld${EMULATION_NAME}_try_needed PARAMS ((const char *, int)); | |
54 | static void gld${EMULATION_NAME}_vercheck | |
55 | PARAMS ((lang_input_statement_type *)); | |
56 | static void gld${EMULATION_NAME}_find_statement_assignment | |
57 | PARAMS ((lang_statement_union_type *)); | |
58 | static void gld${EMULATION_NAME}_find_exp_assignment PARAMS ((etree_type *)); | |
59 | static boolean gld${EMULATION_NAME}_place_orphan | |
60 | PARAMS ((lang_input_statement_type *, asection *)); | |
61 | static void gld${EMULATION_NAME}_place_section | |
62 | PARAMS ((lang_statement_union_type *)); | |
252b5132 RH |
63 | static void gld${EMULATION_NAME}_before_parse PARAMS ((void)); |
64 | static void gld${EMULATION_NAME}_before_allocation PARAMS ((void)); | |
65 | static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile)); | |
7ca69e9e NC |
66 | static int gld${EMULATION_NAME}_parse_args PARAMS((int, char **)); |
67 | static void gld${EMULATION_NAME}_list_options PARAMS ((FILE *)); | |
6f798e5c | 68 | static void gld_${EMULATION_NAME}_finish PARAMS ((void)); |
7ca69e9e NC |
69 | |
70 | \f | |
71 | static int no_pipeline_knowledge = 0; | |
6f798e5c NC |
72 | static char * thumb_entry_symbol = NULL; |
73 | ||
74 | #define OPTION_THUMB_ENTRY 301 | |
7ca69e9e NC |
75 | |
76 | static struct option longopts[] = | |
77 | { | |
78 | { "no-pipeline-knowledge", no_argument, NULL, 'p'}, | |
6f798e5c | 79 | { "thumb-entry", required_argument, NULL, OPTION_THUMB_ENTRY}, |
7ca69e9e NC |
80 | { NULL, no_argument, NULL, 0 } |
81 | }; | |
82 | ||
83 | static void | |
84 | gld${EMULATION_NAME}_list_options (file) | |
85 | FILE * file; | |
86 | { | |
87 | fprintf (file, _(" -p --no-pipeline-knowledge Stop the linker knowing about the pipeline length\n")); | |
6f798e5c | 88 | fprintf (file, _(" --thumb-entry=<sym> Set the entry point to be Thumb symbol <sym>\n")); |
7ca69e9e NC |
89 | } |
90 | ||
91 | static int | |
92 | gld${EMULATION_NAME}_parse_args (argc, argv) | |
93 | int argc; | |
94 | char ** argv; | |
95 | { | |
96 | int longind; | |
97 | int optc; | |
98 | int prevoptind = optind; | |
99 | int prevopterr = opterr; | |
100 | int wanterror; | |
101 | static int lastoptind = -1; | |
102 | ||
103 | if (lastoptind != optind) | |
104 | opterr = 0; | |
105 | ||
106 | wanterror = opterr; | |
107 | lastoptind = optind; | |
108 | ||
109 | optc = getopt_long_only (argc, argv, "-p", longopts, & longind); | |
110 | opterr = prevopterr; | |
111 | ||
112 | switch (optc) | |
113 | { | |
114 | default: | |
115 | if (wanterror) | |
116 | xexit (1); | |
117 | optind = prevoptind; | |
118 | return 0; | |
119 | ||
120 | case 'p': | |
121 | no_pipeline_knowledge = 1; | |
122 | break; | |
6f798e5c NC |
123 | |
124 | case OPTION_THUMB_ENTRY: | |
125 | thumb_entry_symbol = optarg; | |
126 | break; | |
7ca69e9e NC |
127 | } |
128 | ||
129 | return 1; | |
130 | } | |
131 | \f | |
252b5132 RH |
132 | |
133 | static void | |
134 | gld${EMULATION_NAME}_before_parse () | |
135 | { | |
136 | #ifndef TARGET_ /* I.e., if not generic. */ | |
137 | ldfile_set_output_arch ("`echo ${ARCH}`"); | |
138 | #endif /* not TARGET_ */ | |
31ce0628 NC |
139 | config.dynamic_link = ${DYNAMIC_LINK-true}; |
140 | config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo true ; else echo false ; fi`; | |
252b5132 RH |
141 | } |
142 | ||
1220a729 NC |
143 | /* Try to open a dynamic archive. This is where we know that ELF |
144 | dynamic libraries have an extension of .so. */ | |
145 | ||
146 | static boolean | |
147 | gld${EMULATION_NAME}_open_dynamic_archive (arch, search, entry) | |
148 | const char *arch; | |
149 | search_dirs_type *search; | |
150 | lang_input_statement_type *entry; | |
151 | { | |
152 | const char *filename; | |
153 | char *string; | |
154 | ||
155 | if (! entry->is_archive) | |
156 | return false; | |
157 | ||
158 | filename = entry->filename; | |
159 | ||
160 | string = (char *) xmalloc (strlen (search->name) | |
161 | + strlen (filename) | |
162 | + strlen (arch) | |
163 | + sizeof "/lib.so"); | |
164 | ||
165 | sprintf (string, "%s/lib%s%s.so", search->name, filename, arch); | |
166 | ||
167 | if (! ldfile_try_open_bfd (string, entry)) | |
168 | { | |
169 | free (string); | |
170 | return false; | |
171 | } | |
172 | ||
173 | entry->filename = string; | |
174 | ||
175 | /* We have found a dynamic object to include in the link. The ELF | |
176 | backend linker will create a DT_NEEDED entry in the .dynamic | |
177 | section naming this file. If this file includes a DT_SONAME | |
178 | entry, it will be used. Otherwise, the ELF linker will just use | |
179 | the name of the file. For an archive found by searching, like | |
180 | this one, the DT_NEEDED entry should consist of just the name of | |
181 | the file, without the path information used to find it. Note | |
182 | that we only need to do this if we have a dynamic object; an | |
183 | archive will never be referenced by a DT_NEEDED entry. | |
184 | ||
185 | FIXME: This approach--using bfd_elf_set_dt_needed_name--is not | |
186 | very pretty. I haven't been able to think of anything that is | |
187 | pretty, though. */ | |
188 | if (bfd_check_format (entry->the_bfd, bfd_object) | |
189 | && (entry->the_bfd->flags & DYNAMIC) != 0) | |
190 | { | |
191 | char *needed_name; | |
192 | ||
193 | ASSERT (entry->is_archive && entry->search_dirs_flag); | |
194 | needed_name = (char *) xmalloc (strlen (filename) | |
195 | + strlen (arch) | |
196 | + sizeof "lib.so"); | |
197 | sprintf (needed_name, "lib%s%s.so", filename, arch); | |
198 | bfd_elf_set_dt_needed_name (entry->the_bfd, needed_name); | |
199 | } | |
200 | ||
201 | return true; | |
202 | } | |
203 | ||
204 | EOF | |
205 | if [ "x${host}" = "x${target}" ] ; then | |
f97f7300 RH |
206 | case " ${EMULATION_LIBPATH} " in |
207 | *" ${EMULATION_NAME} "*) | |
1220a729 NC |
208 | cat >>e${EMULATION_NAME}.c <<EOF |
209 | ||
210 | /* For a native linker, check the file /etc/ld.so.conf for directories | |
211 | in which we may find shared libraries. /etc/ld.so.conf is really | |
212 | only meaningful on Linux, but we check it on other systems anyhow. */ | |
213 | ||
214 | static boolean gld${EMULATION_NAME}_check_ld_so_conf | |
215 | PARAMS ((const char *, int)); | |
216 | ||
217 | static boolean | |
218 | gld${EMULATION_NAME}_check_ld_so_conf (name, force) | |
219 | const char *name; | |
220 | int force; | |
221 | { | |
222 | static boolean initialized; | |
223 | static char *ld_so_conf; | |
224 | ||
225 | if (! initialized) | |
226 | { | |
227 | FILE *f; | |
228 | ||
229 | f = fopen ("/etc/ld.so.conf", FOPEN_RT); | |
230 | if (f != NULL) | |
231 | { | |
232 | char *b; | |
233 | size_t len, alloc; | |
234 | int c; | |
235 | ||
236 | len = 0; | |
237 | alloc = 100; | |
238 | b = (char *) xmalloc (alloc); | |
239 | ||
240 | while ((c = getc (f)) != EOF) | |
241 | { | |
242 | if (len + 1 >= alloc) | |
243 | { | |
244 | alloc *= 2; | |
245 | b = (char *) xrealloc (b, alloc); | |
246 | } | |
247 | if (c != ':' | |
248 | && c != ' ' | |
249 | && c != '\t' | |
250 | && c != '\n' | |
251 | && c != ',') | |
252 | { | |
253 | b[len] = c; | |
254 | ++len; | |
255 | } | |
256 | else | |
257 | { | |
258 | if (len > 0 && b[len - 1] != ':') | |
259 | { | |
260 | b[len] = ':'; | |
261 | ++len; | |
262 | } | |
263 | } | |
264 | } | |
265 | ||
266 | if (len > 0 && b[len - 1] == ':') | |
267 | --len; | |
268 | ||
269 | if (len > 0) | |
270 | b[len] = '\0'; | |
271 | else | |
272 | { | |
273 | free (b); | |
274 | b = NULL; | |
275 | } | |
276 | ||
277 | fclose (f); | |
278 | ||
279 | ld_so_conf = b; | |
280 | } | |
281 | ||
282 | initialized = true; | |
283 | } | |
284 | ||
285 | if (ld_so_conf == NULL) | |
286 | return false; | |
287 | ||
288 | return gld${EMULATION_NAME}_search_needed (ld_so_conf, name, force); | |
289 | } | |
290 | ||
291 | EOF | |
f97f7300 RH |
292 | ;; |
293 | esac | |
1220a729 NC |
294 | fi |
295 | cat >>e${EMULATION_NAME}.c <<EOF | |
296 | ||
297 | /* These variables are required to pass information back and forth | |
298 | between after_open and check_needed and stat_needed and vercheck. */ | |
299 | ||
300 | static struct bfd_link_needed_list *global_needed; | |
301 | static struct stat global_stat; | |
302 | static boolean global_found; | |
303 | static struct bfd_link_needed_list *global_vercheck_needed; | |
304 | static boolean global_vercheck_failed; | |
305 | ||
306 | static void | |
307 | gld${EMULATION_NAME}_after_open () | |
308 | { | |
309 | struct bfd_link_needed_list *needed, *l; | |
310 | ||
f11523b0 | 311 | if (strstr (bfd_get_target (output_bfd), "arm") == NULL) |
1220a729 | 312 | { |
f11523b0 NC |
313 | /* The arm backend needs special fields in the output hash structure. |
314 | These will only be created if the output format is an arm format, | |
315 | hence we do not support linking and changing output formats at the | |
316 | same time. Use a link followed by objcopy to change output formats. */ | |
317 | einfo ("%F%X%P: error: cannot change output format whilst linking ARM binaries\n"); | |
318 | return; | |
1220a729 NC |
319 | } |
320 | ||
f11523b0 NC |
321 | { |
322 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
323 | { | |
324 | /* The interworking bfd must be the last one to be processed */ | |
325 | if (!is->next) | |
326 | bfd_elf32_arm_get_bfd_for_interworking (is->the_bfd, & link_info); | |
327 | } | |
328 | } | |
329 | ||
1220a729 NC |
330 | /* We only need to worry about this when doing a final link. */ |
331 | if (link_info.relocateable || link_info.shared) | |
332 | return; | |
333 | ||
334 | /* Get the list of files which appear in DT_NEEDED entries in | |
335 | dynamic objects included in the link (often there will be none). | |
336 | For each such file, we want to track down the corresponding | |
337 | library, and include the symbol table in the link. This is what | |
338 | the runtime dynamic linker will do. Tracking the files down here | |
339 | permits one dynamic object to include another without requiring | |
340 | special action by the person doing the link. Note that the | |
341 | needed list can actually grow while we are stepping through this | |
342 | loop. */ | |
343 | needed = bfd_elf_get_needed_list (output_bfd, &link_info); | |
344 | for (l = needed; l != NULL; l = l->next) | |
345 | { | |
346 | struct bfd_link_needed_list *ll; | |
347 | int force; | |
348 | ||
349 | /* If we've already seen this file, skip it. */ | |
350 | for (ll = needed; ll != l; ll = ll->next) | |
351 | if (strcmp (ll->name, l->name) == 0) | |
352 | break; | |
353 | if (ll != l) | |
354 | continue; | |
355 | ||
356 | /* See if this file was included in the link explicitly. */ | |
357 | global_needed = l; | |
358 | global_found = false; | |
359 | lang_for_each_input_file (gld${EMULATION_NAME}_check_needed); | |
360 | if (global_found) | |
361 | continue; | |
362 | ||
363 | /* We need to find this file and include the symbol table. We | |
364 | want to search for the file in the same way that the dynamic | |
365 | linker will search. That means that we want to use | |
366 | rpath_link, rpath, then the environment variable | |
367 | LD_LIBRARY_PATH (native only), then the linker script | |
368 | LIB_SEARCH_DIRS. We do not search using the -L arguments. | |
369 | ||
370 | We search twice. The first time, we skip objects which may | |
371 | introduce version mismatches. The second time, we force | |
372 | their use. See gld${EMULATION_NAME}_vercheck comment. */ | |
373 | for (force = 0; force < 2; force++) | |
374 | { | |
375 | const char *lib_path; | |
376 | size_t len; | |
377 | search_dirs_type *search; | |
378 | ||
379 | if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link, | |
380 | l->name, force)) | |
381 | break; | |
382 | if (gld${EMULATION_NAME}_search_needed (command_line.rpath, | |
383 | l->name, force)) | |
384 | break; | |
385 | if (command_line.rpath_link == NULL | |
386 | && command_line.rpath == NULL) | |
387 | { | |
388 | lib_path = (const char *) getenv ("LD_RUN_PATH"); | |
389 | if (gld${EMULATION_NAME}_search_needed (lib_path, l->name, | |
390 | force)) | |
391 | break; | |
392 | } | |
393 | EOF | |
394 | if [ "x${host}" = "x${target}" ] ; then | |
f97f7300 RH |
395 | case " ${EMULATION_LIBPATH} " in |
396 | *" ${EMULATION_NAME} "*) | |
1220a729 NC |
397 | cat >>e${EMULATION_NAME}.c <<EOF |
398 | lib_path = (const char *) getenv ("LD_LIBRARY_PATH"); | |
399 | if (gld${EMULATION_NAME}_search_needed (lib_path, l->name, force)) | |
400 | break; | |
401 | EOF | |
f97f7300 RH |
402 | ;; |
403 | esac | |
1220a729 NC |
404 | fi |
405 | cat >>e${EMULATION_NAME}.c <<EOF | |
406 | len = strlen (l->name); | |
407 | for (search = search_head; search != NULL; search = search->next) | |
408 | { | |
409 | char *filename; | |
410 | ||
411 | if (search->cmdline) | |
412 | continue; | |
413 | filename = (char *) xmalloc (strlen (search->name) + len + 2); | |
414 | sprintf (filename, "%s/%s", search->name, l->name); | |
415 | if (gld${EMULATION_NAME}_try_needed (filename, force)) | |
416 | break; | |
417 | free (filename); | |
418 | } | |
419 | if (search != NULL) | |
420 | break; | |
421 | EOF | |
422 | if [ "x${host}" = "x${target}" ] ; then | |
f97f7300 RH |
423 | case " ${EMULATION_LIBPATH} " in |
424 | *" ${EMULATION_NAME} "*) | |
1220a729 NC |
425 | cat >>e${EMULATION_NAME}.c <<EOF |
426 | if (gld${EMULATION_NAME}_check_ld_so_conf (l->name, force)) | |
427 | break; | |
428 | EOF | |
f97f7300 RH |
429 | ;; |
430 | esac | |
1220a729 NC |
431 | fi |
432 | cat >>e${EMULATION_NAME}.c <<EOF | |
433 | } | |
434 | ||
435 | if (force < 2) | |
436 | continue; | |
437 | ||
438 | einfo ("%P: warning: %s, needed by %B, not found (try using --rpath)\n", | |
439 | l->name, l->by); | |
440 | } | |
441 | } | |
442 | ||
443 | /* Search for a needed file in a path. */ | |
444 | ||
445 | static boolean | |
446 | gld${EMULATION_NAME}_search_needed (path, name, force) | |
447 | const char *path; | |
448 | const char *name; | |
449 | int force; | |
450 | { | |
451 | const char *s; | |
452 | size_t len; | |
453 | ||
454 | if (path == NULL || *path == '\0') | |
455 | return false; | |
456 | len = strlen (name); | |
457 | while (1) | |
458 | { | |
459 | char *filename, *sset; | |
460 | ||
461 | s = strchr (path, ':'); | |
462 | if (s == NULL) | |
463 | s = path + strlen (path); | |
464 | ||
465 | filename = (char *) xmalloc (s - path + len + 2); | |
466 | if (s == path) | |
467 | sset = filename; | |
468 | else | |
469 | { | |
470 | memcpy (filename, path, s - path); | |
471 | filename[s - path] = '/'; | |
472 | sset = filename + (s - path) + 1; | |
473 | } | |
474 | strcpy (sset, name); | |
475 | ||
476 | if (gld${EMULATION_NAME}_try_needed (filename, force)) | |
477 | return true; | |
478 | ||
479 | free (filename); | |
480 | ||
481 | if (*s == '\0') | |
482 | break; | |
483 | path = s + 1; | |
484 | } | |
485 | ||
486 | return false; | |
487 | } | |
488 | ||
489 | /* This function is called for each possible name for a dynamic object | |
490 | named by a DT_NEEDED entry. The FORCE parameter indicates whether | |
491 | to skip the check for a conflicting version. */ | |
492 | ||
493 | static boolean | |
494 | gld${EMULATION_NAME}_try_needed (name, force) | |
495 | const char *name; | |
496 | int force; | |
497 | { | |
498 | bfd *abfd; | |
499 | ||
500 | abfd = bfd_openr (name, bfd_get_target (output_bfd)); | |
501 | if (abfd == NULL) | |
502 | return false; | |
503 | if (! bfd_check_format (abfd, bfd_object)) | |
504 | { | |
505 | (void) bfd_close (abfd); | |
506 | return false; | |
507 | } | |
508 | if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0) | |
509 | { | |
510 | (void) bfd_close (abfd); | |
511 | return false; | |
512 | } | |
513 | ||
514 | /* Check whether this object would include any conflicting library | |
515 | versions. If FORCE is set, then we skip this check; we use this | |
516 | the second time around, if we couldn't find any compatible | |
517 | instance of the shared library. */ | |
518 | ||
519 | if (! force) | |
520 | { | |
521 | struct bfd_link_needed_list *needed; | |
522 | ||
523 | if (! bfd_elf_get_bfd_needed_list (abfd, &needed)) | |
524 | einfo ("%F%P:%B: bfd_elf_get_bfd_needed_list failed: %E\n", abfd); | |
525 | ||
526 | if (needed != NULL) | |
527 | { | |
528 | global_vercheck_needed = needed; | |
529 | global_vercheck_failed = false; | |
530 | lang_for_each_input_file (gld${EMULATION_NAME}_vercheck); | |
531 | if (global_vercheck_failed) | |
532 | { | |
533 | (void) bfd_close (abfd); | |
534 | /* Return false to force the caller to move on to try | |
535 | another file on the search path. */ | |
536 | return false; | |
537 | } | |
538 | ||
539 | /* But wait! It gets much worse. On Linux, if a shared | |
540 | library does not use libc at all, we are supposed to skip | |
541 | it the first time around in case we encounter a shared | |
542 | library later on with the same name which does use the | |
543 | version of libc that we want. This is much too horrible | |
544 | to use on any system other than Linux. */ | |
545 | ||
546 | EOF | |
547 | case ${target} in | |
548 | *-*-linux-gnu*) | |
549 | cat >>e${EMULATION_NAME}.c <<EOF | |
550 | { | |
551 | struct bfd_link_needed_list *l; | |
552 | ||
553 | for (l = needed; l != NULL; l = l->next) | |
554 | if (strncmp (l->name, "libc.so", 7) == 0) | |
555 | break; | |
556 | if (l == NULL) | |
557 | { | |
558 | (void) bfd_close (abfd); | |
559 | return false; | |
560 | } | |
561 | } | |
562 | ||
563 | EOF | |
564 | ;; | |
565 | esac | |
566 | cat >>e${EMULATION_NAME}.c <<EOF | |
567 | } | |
568 | } | |
569 | ||
570 | /* We've found a dynamic object matching the DT_NEEDED entry. */ | |
571 | ||
572 | /* We have already checked that there is no other input file of the | |
573 | same name. We must now check again that we are not including the | |
574 | same file twice. We need to do this because on many systems | |
575 | libc.so is a symlink to, e.g., libc.so.1. The SONAME entry will | |
576 | reference libc.so.1. If we have already included libc.so, we | |
577 | don't want to include libc.so.1 if they are the same file, and we | |
578 | can only check that using stat. */ | |
579 | ||
580 | if (bfd_stat (abfd, &global_stat) != 0) | |
581 | einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd); | |
582 | global_found = false; | |
583 | lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed); | |
584 | if (global_found) | |
585 | { | |
586 | /* Return true to indicate that we found the file, even though | |
587 | we aren't going to do anything with it. */ | |
588 | return true; | |
589 | } | |
590 | ||
591 | /* Tell the ELF backend that don't want the output file to have a | |
592 | DT_NEEDED entry for this file. */ | |
593 | bfd_elf_set_dt_needed_name (abfd, ""); | |
594 | ||
595 | /* Add this file into the symbol table. */ | |
596 | if (! bfd_link_add_symbols (abfd, &link_info)) | |
597 | einfo ("%F%B: could not read symbols: %E\n", abfd); | |
598 | ||
599 | return true; | |
600 | } | |
601 | ||
602 | /* See if an input file matches a DT_NEEDED entry by name. */ | |
603 | ||
604 | static void | |
605 | gld${EMULATION_NAME}_check_needed (s) | |
606 | lang_input_statement_type *s; | |
607 | { | |
608 | if (global_found) | |
609 | return; | |
610 | ||
611 | if (s->filename != NULL | |
612 | && strcmp (s->filename, global_needed->name) == 0) | |
613 | { | |
614 | global_found = true; | |
615 | return; | |
616 | } | |
617 | ||
618 | if (s->the_bfd != NULL) | |
619 | { | |
620 | const char *soname; | |
621 | ||
622 | soname = bfd_elf_get_dt_soname (s->the_bfd); | |
623 | if (soname != NULL | |
624 | && strcmp (soname, global_needed->name) == 0) | |
625 | { | |
626 | global_found = true; | |
627 | return; | |
628 | } | |
629 | } | |
630 | ||
631 | if (s->search_dirs_flag | |
632 | && s->filename != NULL | |
633 | && strchr (global_needed->name, '/') == NULL) | |
634 | { | |
635 | const char *f; | |
636 | ||
637 | f = strrchr (s->filename, '/'); | |
638 | if (f != NULL | |
639 | && strcmp (f + 1, global_needed->name) == 0) | |
640 | { | |
641 | global_found = true; | |
642 | return; | |
643 | } | |
644 | } | |
645 | } | |
646 | ||
647 | /* See if an input file matches a DT_NEEDED entry by running stat on | |
648 | the file. */ | |
649 | ||
650 | static void | |
651 | gld${EMULATION_NAME}_stat_needed (s) | |
652 | lang_input_statement_type *s; | |
653 | { | |
654 | struct stat st; | |
655 | const char *suffix; | |
656 | const char *soname; | |
657 | const char *f; | |
658 | ||
659 | if (global_found) | |
660 | return; | |
661 | if (s->the_bfd == NULL) | |
662 | return; | |
663 | ||
664 | if (bfd_stat (s->the_bfd, &st) != 0) | |
665 | { | |
666 | einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd); | |
667 | return; | |
668 | } | |
669 | ||
670 | if (st.st_dev == global_stat.st_dev | |
671 | && st.st_ino == global_stat.st_ino) | |
672 | { | |
673 | global_found = true; | |
674 | return; | |
675 | } | |
676 | ||
677 | /* We issue a warning if it looks like we are including two | |
678 | different versions of the same shared library. For example, | |
679 | there may be a problem if -lc picks up libc.so.6 but some other | |
680 | shared library has a DT_NEEDED entry of libc.so.5. This is a | |
681 | hueristic test, and it will only work if the name looks like | |
682 | NAME.so.VERSION. FIXME: Depending on file names is error-prone. | |
683 | If we really want to issue warnings about mixing version numbers | |
684 | of shared libraries, we need to find a better way. */ | |
685 | ||
686 | if (strchr (global_needed->name, '/') != NULL) | |
687 | return; | |
688 | suffix = strstr (global_needed->name, ".so."); | |
689 | if (suffix == NULL) | |
690 | return; | |
691 | suffix += sizeof ".so." - 1; | |
692 | ||
693 | soname = bfd_elf_get_dt_soname (s->the_bfd); | |
694 | if (soname == NULL) | |
695 | soname = s->filename; | |
696 | ||
697 | f = strrchr (soname, '/'); | |
698 | if (f != NULL) | |
699 | ++f; | |
700 | else | |
701 | f = soname; | |
702 | ||
703 | if (strncmp (f, global_needed->name, suffix - global_needed->name) == 0) | |
704 | einfo ("%P: warning: %s, needed by %B, may conflict with %s\n", | |
705 | global_needed->name, global_needed->by, f); | |
706 | } | |
707 | ||
708 | /* On Linux, it's possible to have different versions of the same | |
709 | shared library linked against different versions of libc. The | |
710 | dynamic linker somehow tags which libc version to use in | |
711 | /etc/ld.so.cache, and, based on the libc that it sees in the | |
712 | executable, chooses which version of the shared library to use. | |
713 | ||
714 | We try to do a similar check here by checking whether this shared | |
715 | library needs any other shared libraries which may conflict with | |
716 | libraries we have already included in the link. If it does, we | |
717 | skip it, and try to find another shared library farther on down the | |
718 | link path. | |
719 | ||
720 | This is called via lang_for_each_input_file. | |
721 | GLOBAL_VERCHECK_NEEDED is the list of objects needed by the object | |
722 | which we ar checking. This sets GLOBAL_VERCHECK_FAILED if we find | |
723 | a conflicting version. */ | |
724 | ||
725 | static void | |
726 | gld${EMULATION_NAME}_vercheck (s) | |
727 | lang_input_statement_type *s; | |
728 | { | |
729 | const char *soname, *f; | |
730 | struct bfd_link_needed_list *l; | |
731 | ||
732 | if (global_vercheck_failed) | |
733 | return; | |
734 | if (s->the_bfd == NULL | |
735 | || (bfd_get_file_flags (s->the_bfd) & DYNAMIC) == 0) | |
736 | return; | |
737 | ||
738 | soname = bfd_elf_get_dt_soname (s->the_bfd); | |
739 | if (soname == NULL) | |
740 | soname = bfd_get_filename (s->the_bfd); | |
741 | ||
742 | f = strrchr (soname, '/'); | |
743 | if (f != NULL) | |
744 | ++f; | |
745 | else | |
746 | f = soname; | |
747 | ||
748 | for (l = global_vercheck_needed; l != NULL; l = l->next) | |
749 | { | |
750 | const char *suffix; | |
751 | ||
752 | if (strcmp (f, l->name) == 0) | |
753 | { | |
754 | /* Probably can't happen, but it's an easy check. */ | |
755 | continue; | |
756 | } | |
757 | ||
758 | if (strchr (l->name, '/') != NULL) | |
759 | continue; | |
760 | ||
761 | suffix = strstr (l->name, ".so."); | |
762 | if (suffix == NULL) | |
763 | continue; | |
764 | ||
765 | suffix += sizeof ".so." - 1; | |
766 | ||
767 | if (strncmp (f, l->name, suffix - l->name) == 0) | |
768 | { | |
769 | /* Here we know that S is a dynamic object FOO.SO.VER1, and | |
770 | the object we are considering needs a dynamic object | |
771 | FOO.SO.VER2, and VER1 and VER2 are different. This | |
772 | appears to be a version mismatch, so we tell the caller | |
773 | to try a different version of this library. */ | |
774 | global_vercheck_failed = true; | |
775 | return; | |
776 | } | |
777 | } | |
778 | } | |
779 | ||
780 | /* Place an orphan section. We use this to put random SHF_ALLOC | |
781 | sections in the right segment. */ | |
782 | ||
783 | static asection *hold_section; | |
784 | static lang_output_section_statement_type *hold_use; | |
785 | static lang_output_section_statement_type *hold_text; | |
786 | static lang_output_section_statement_type *hold_rodata; | |
787 | static lang_output_section_statement_type *hold_data; | |
788 | static lang_output_section_statement_type *hold_bss; | |
789 | static lang_output_section_statement_type *hold_rel; | |
790 | static lang_output_section_statement_type *hold_interp; | |
791 | ||
792 | /*ARGSUSED*/ | |
793 | static boolean | |
794 | gld${EMULATION_NAME}_place_orphan (file, s) | |
795 | lang_input_statement_type *file; | |
796 | asection *s; | |
797 | { | |
798 | lang_output_section_statement_type *place; | |
799 | asection *snew, **pps; | |
800 | lang_statement_list_type *old; | |
801 | lang_statement_list_type add; | |
802 | etree_type *address; | |
803 | const char *secname, *ps; | |
804 | const char *outsecname; | |
805 | lang_output_section_statement_type *os; | |
806 | ||
807 | if ((s->flags & SEC_ALLOC) == 0) | |
808 | return false; | |
809 | ||
810 | /* Look through the script to see where to place this section. */ | |
811 | hold_section = s; | |
812 | hold_use = NULL; | |
813 | lang_for_each_statement (gld${EMULATION_NAME}_place_section); | |
814 | ||
815 | if (hold_use != NULL) | |
816 | { | |
817 | /* We have already placed a section with this name. */ | |
818 | wild_doit (&hold_use->children, s, hold_use, file); | |
819 | return true; | |
820 | } | |
821 | ||
822 | secname = bfd_get_section_name (s->owner, s); | |
823 | ||
824 | /* If this is a final link, then always put .gnu.warning.SYMBOL | |
825 | sections into the .text section to get them out of the way. */ | |
826 | if (! link_info.shared | |
827 | && ! link_info.relocateable | |
828 | && strncmp (secname, ".gnu.warning.", sizeof ".gnu.warning." - 1) == 0 | |
829 | && hold_text != NULL) | |
830 | { | |
831 | wild_doit (&hold_text->children, s, hold_text, file); | |
832 | return true; | |
833 | } | |
834 | ||
835 | /* Decide which segment the section should go in based on the | |
836 | section name and section flags. We put loadable .note sections | |
837 | right after the .interp section, so that the PT_NOTE segment is | |
838 | stored right after the program headers where the OS can read it | |
839 | in the first page. */ | |
840 | place = NULL; | |
841 | if (s->flags & SEC_EXCLUDE) | |
842 | return false; | |
843 | else if ((s->flags & SEC_LOAD) != 0 | |
844 | && strncmp (secname, ".note", 4) == 0 | |
845 | && hold_interp != NULL) | |
846 | place = hold_interp; | |
847 | else if ((s->flags & SEC_HAS_CONTENTS) == 0 | |
848 | && hold_bss != NULL) | |
849 | place = hold_bss; | |
850 | else if ((s->flags & SEC_READONLY) == 0 | |
851 | && hold_data != NULL) | |
852 | place = hold_data; | |
853 | else if (strncmp (secname, ".rel", 4) == 0 | |
854 | && hold_rel != NULL) | |
855 | place = hold_rel; | |
856 | else if ((s->flags & SEC_CODE) == 0 | |
857 | && (s->flags & SEC_READONLY) != 0 | |
858 | && hold_rodata != NULL) | |
859 | place = hold_rodata; | |
860 | else if ((s->flags & SEC_READONLY) != 0 | |
861 | && hold_text != NULL) | |
862 | place = hold_text; | |
863 | if (place == NULL) | |
864 | return false; | |
865 | ||
866 | /* Choose a unique name for the section. This will be needed if the | |
867 | same section name appears in the input file with different | |
868 | loadable or allocateable characteristics. */ | |
869 | outsecname = secname; | |
870 | if (bfd_get_section_by_name (output_bfd, outsecname) != NULL) | |
871 | { | |
872 | unsigned int len; | |
873 | char *newname; | |
874 | unsigned int i; | |
875 | ||
876 | len = strlen (outsecname); | |
877 | newname = xmalloc (len + 5); | |
878 | strcpy (newname, outsecname); | |
879 | i = 0; | |
880 | do | |
881 | { | |
882 | sprintf (newname + len, "%d", i); | |
883 | ++i; | |
884 | } | |
885 | while (bfd_get_section_by_name (output_bfd, newname) != NULL); | |
886 | ||
887 | outsecname = newname; | |
888 | } | |
889 | ||
890 | /* Create the section in the output file, and put it in the right | |
891 | place. This shuffling is to make the output file look neater. */ | |
892 | snew = bfd_make_section (output_bfd, outsecname); | |
893 | if (snew == NULL) | |
894 | einfo ("%P%F: output format %s cannot represent section called %s\n", | |
895 | output_bfd->xvec->name, outsecname); | |
896 | if (place->bfd_section != NULL) | |
897 | { | |
898 | for (pps = &output_bfd->sections; *pps != snew; pps = &(*pps)->next) | |
899 | ; | |
900 | *pps = snew->next; | |
901 | snew->next = place->bfd_section->next; | |
902 | place->bfd_section->next = snew; | |
903 | } | |
904 | ||
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 | ||
919 | symname = (char *) xmalloc (ps - outsecname + sizeof "__start_"); | |
920 | sprintf (symname, "__start_%s", outsecname); | |
921 | lang_add_assignment (exp_assop ('=', symname, | |
922 | exp_unop (ALIGN_K, | |
923 | exp_intop ((bfd_vma) 1 | |
924 | << s->alignment_power)))); | |
925 | } | |
926 | ||
927 | if (! link_info.relocateable) | |
928 | address = NULL; | |
929 | else | |
930 | address = exp_intop ((bfd_vma) 0); | |
931 | ||
932 | lang_enter_output_section_statement (outsecname, address, 0, | |
933 | (bfd_vma) 0, | |
934 | (etree_type *) NULL, | |
935 | (etree_type *) NULL, | |
936 | (etree_type *) NULL); | |
937 | ||
938 | os = lang_output_section_statement_lookup (outsecname); | |
939 | wild_doit (&os->children, s, os, file); | |
940 | ||
941 | lang_leave_output_section_statement | |
942 | ((bfd_vma) 0, "*default*", (struct lang_output_section_phdr_list *) NULL); | |
943 | stat_ptr = &add; | |
944 | ||
945 | if (*ps == '\0' && config.build_constructors) | |
946 | { | |
947 | char *symname; | |
948 | ||
949 | symname = (char *) xmalloc (ps - outsecname + sizeof "__stop_"); | |
950 | sprintf (symname, "__stop_%s", outsecname); | |
951 | lang_add_assignment (exp_assop ('=', symname, | |
952 | exp_nameop (NAME, "."))); | |
953 | } | |
954 | ||
955 | /* Now stick the new statement list right after PLACE. */ | |
956 | *add.tail = place->header.next; | |
957 | place->header.next = add.head; | |
958 | ||
959 | stat_ptr = old; | |
960 | ||
961 | return true; | |
962 | } | |
963 | ||
964 | static void | |
965 | gld${EMULATION_NAME}_place_section (s) | |
966 | lang_statement_union_type *s; | |
967 | { | |
968 | lang_output_section_statement_type *os; | |
969 | ||
970 | if (s->header.type != lang_output_section_statement_enum) | |
971 | return; | |
972 | ||
973 | os = &s->output_section_statement; | |
974 | ||
975 | if (strcmp (os->name, hold_section->name) == 0 | |
976 | && os->bfd_section != NULL | |
977 | && ((hold_section->flags & (SEC_LOAD | SEC_ALLOC)) | |
978 | == (os->bfd_section->flags & (SEC_LOAD | SEC_ALLOC)))) | |
979 | hold_use = os; | |
980 | ||
981 | if (strcmp (os->name, ".text") == 0) | |
982 | hold_text = os; | |
983 | else if (strcmp (os->name, ".rodata") == 0) | |
984 | hold_rodata = os; | |
985 | else if (strcmp (os->name, ".data") == 0) | |
986 | hold_data = os; | |
987 | else if (strcmp (os->name, ".bss") == 0) | |
988 | hold_bss = os; | |
989 | else if (hold_rel == NULL | |
990 | && os->bfd_section != NULL | |
991 | && (os->bfd_section->flags & SEC_ALLOC) != 0 | |
992 | && strncmp (os->name, ".rel", 4) == 0) | |
993 | hold_rel = os; | |
994 | else if (strcmp (os->name, ".interp") == 0) | |
995 | hold_interp = os; | |
996 | } | |
997 | ||
998 | /* Look through an expression for an assignment statement. */ | |
999 | ||
1000 | static void | |
1001 | gld${EMULATION_NAME}_find_exp_assignment (exp) | |
1002 | etree_type *exp; | |
1003 | { | |
1004 | struct bfd_link_hash_entry *h; | |
1005 | ||
1006 | switch (exp->type.node_class) | |
1007 | { | |
1008 | case etree_provide: | |
1009 | h = bfd_link_hash_lookup (link_info.hash, exp->assign.dst, | |
1010 | false, false, false); | |
1011 | if (h == NULL) | |
1012 | break; | |
1013 | ||
1014 | /* We call record_link_assignment even if the symbol is defined. | |
1015 | This is because if it is defined by a dynamic object, we | |
1016 | actually want to use the value defined by the linker script, | |
1017 | not the value from the dynamic object (because we are setting | |
1018 | symbols like etext). If the symbol is defined by a regular | |
1019 | object, then, as it happens, calling record_link_assignment | |
1020 | will do no harm. */ | |
1021 | ||
1022 | /* Fall through. */ | |
1023 | case etree_assign: | |
1024 | if (strcmp (exp->assign.dst, ".") != 0) | |
1025 | { | |
1026 | if (! (bfd_elf${ELFSIZE}_record_link_assignment | |
1027 | (output_bfd, &link_info, exp->assign.dst, | |
1028 | exp->type.node_class == etree_provide ? true : false))) | |
1029 | einfo ("%P%F: failed to record assignment to %s: %E\n", | |
1030 | exp->assign.dst); | |
1031 | } | |
1032 | gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src); | |
1033 | break; | |
1034 | ||
1035 | case etree_binary: | |
1036 | gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs); | |
1037 | gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs); | |
1038 | break; | |
1039 | ||
1040 | case etree_trinary: | |
1041 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond); | |
1042 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs); | |
1043 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs); | |
1044 | break; | |
1045 | ||
1046 | case etree_unary: | |
1047 | gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child); | |
1048 | break; | |
1049 | ||
1050 | default: | |
1051 | break; | |
1052 | } | |
1053 | } | |
1054 | ||
1055 | /* This is called by the before_allocation routine via | |
1056 | lang_for_each_statement. It locates any assignment statements, and | |
1057 | tells the ELF backend about them, in case they are assignments to | |
1058 | symbols which are referred to by dynamic objects. */ | |
1059 | ||
1060 | static void | |
1061 | gld${EMULATION_NAME}_find_statement_assignment (s) | |
1062 | lang_statement_union_type *s; | |
1063 | { | |
1064 | if (s->header.type == lang_assignment_statement_enum) | |
1065 | gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp); | |
1066 | } | |
1067 | ||
252b5132 RH |
1068 | /* This is called after the sections have been attached to output |
1069 | sections, but before any sizes or addresses have been set. */ | |
1070 | ||
1071 | static void | |
1072 | gld${EMULATION_NAME}_before_allocation () | |
1073 | { | |
1220a729 NC |
1074 | const char *rpath; |
1075 | asection *sinterp; | |
1076 | ||
1077 | /* If we are going to make any variable assignments, we need to let | |
1078 | the ELF backend know about them in case the variables are | |
1079 | referred to by dynamic objects. */ | |
1080 | lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment); | |
1081 | ||
1082 | /* Let the ELF backend work out the sizes of any sections required | |
1083 | by dynamic linking. */ | |
1084 | rpath = command_line.rpath; | |
1085 | if (rpath == NULL) | |
1086 | rpath = (const char *) getenv ("LD_RUN_PATH"); | |
1087 | if (! (bfd_elf${ELFSIZE}_size_dynamic_sections | |
1088 | (output_bfd, command_line.soname, rpath, | |
1089 | command_line.export_dynamic, command_line.filter_shlib, | |
1090 | (const char * const *) command_line.auxiliary_filters, | |
1091 | &link_info, &sinterp, lang_elf_version_info))) | |
1092 | einfo ("%P%F: failed to set dynamic section sizes: %E\n"); | |
1093 | ||
1094 | /* Let the user override the dynamic linker we are using. */ | |
1095 | if (command_line.interpreter != NULL | |
1096 | && sinterp != NULL) | |
1097 | { | |
1098 | sinterp->contents = (bfd_byte *) command_line.interpreter; | |
1099 | sinterp->_raw_size = strlen (command_line.interpreter) + 1; | |
1100 | } | |
1101 | ||
1102 | /* Look for any sections named .gnu.warning. As a GNU extensions, | |
1103 | we treat such sections as containing warning messages. We print | |
1104 | out the warning message, and then zero out the section size so | |
1105 | that it does not get copied into the output file. */ | |
1106 | ||
1107 | { | |
1108 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
1109 | { | |
1110 | asection *s; | |
1111 | bfd_size_type sz; | |
1112 | char *msg; | |
1113 | boolean ret; | |
1114 | ||
1115 | if (is->just_syms_flag) | |
1116 | continue; | |
1117 | ||
1118 | s = bfd_get_section_by_name (is->the_bfd, ".gnu.warning"); | |
1119 | if (s == NULL) | |
1120 | continue; | |
1121 | ||
1122 | sz = bfd_section_size (is->the_bfd, s); | |
1123 | msg = xmalloc ((size_t) sz + 1); | |
1124 | if (! bfd_get_section_contents (is->the_bfd, s, msg, (file_ptr) 0, sz)) | |
1125 | einfo ("%F%B: Can't read contents of section .gnu.warning: %E\n", | |
1126 | is->the_bfd); | |
1127 | msg[sz] = '\0'; | |
1128 | ret = link_info.callbacks->warning (&link_info, msg, | |
1129 | (const char *) NULL, | |
1130 | is->the_bfd, (asection *) NULL, | |
1131 | (bfd_vma) 0); | |
1132 | ASSERT (ret); | |
1133 | free (msg); | |
1134 | ||
1135 | /* Clobber the section size, so that we don't waste copying the | |
1136 | warning into the output file. */ | |
1137 | s->_raw_size = 0; | |
1138 | } | |
1139 | } | |
1140 | ||
252b5132 RH |
1141 | /* we should be able to set the size of the interworking stub section */ |
1142 | ||
1143 | /* Here we rummage through the found bfds to collect glue information */ | |
1144 | /* FIXME: should this be based on a command line option? krk@cygnus.com */ | |
1145 | { | |
1146 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
1147 | { | |
7ca69e9e NC |
1148 | if (!bfd_elf32_arm_process_before_allocation (is->the_bfd, & link_info, |
1149 | no_pipeline_knowledge)) | |
252b5132 RH |
1150 | { |
1151 | /* xgettext:c-format */ | |
1152 | einfo (_("Errors encountered processing file %s"), is->filename); | |
1153 | } | |
1154 | } | |
1155 | } | |
1156 | ||
1157 | /* We have seen it all. Allocate it, and carry on */ | |
1158 | bfd_elf32_arm_allocate_interworking_sections (& link_info); | |
1159 | } | |
1160 | ||
6f798e5c NC |
1161 | static void |
1162 | gld${EMULATION_NAME}_finish PARAMS((void)) | |
1163 | { | |
1164 | struct bfd_link_hash_entry * h; | |
1165 | ||
1166 | if (thumb_entry_symbol == NULL) | |
1167 | return; | |
1168 | ||
1169 | h = bfd_link_hash_lookup (link_info.hash, thumb_entry_symbol, false, false, true); | |
1170 | ||
1171 | if (h != (struct bfd_link_hash_entry *) NULL | |
1172 | && (h->type == bfd_link_hash_defined | |
1173 | || h->type == bfd_link_hash_defweak) | |
1174 | && h->u.def.section->output_section != NULL) | |
1175 | { | |
1176 | static char buffer[32]; | |
1177 | bfd_vma val; | |
1178 | ||
1179 | /* Special procesing is required for a Thumb entry symbol. The | |
1180 | bottom bit of its address must be set. */ | |
1181 | val = (h->u.def.value | |
1182 | + bfd_get_section_vma (output_bfd, | |
1183 | h->u.def.section->output_section) | |
1184 | + h->u.def.section->output_offset); | |
1185 | ||
1186 | val |= 1; | |
1187 | ||
1188 | /* Now convert this value into a string and store it in entry_symbol | |
1189 | where the lang_finish() function will pick it up. */ | |
1190 | buffer[0] = '0'; | |
1191 | buffer[1] = 'x'; | |
1192 | ||
1193 | sprintf_vma (buffer + 2, val); | |
1194 | ||
1195 | if (entry_symbol != NULL && entry_from_cmdline) | |
1196 | einfo (_("%P: warning: '--thumb-entry %s' is overriding '-e %s'\n"), | |
1197 | thumb_entry_symbol, entry_symbol); | |
1198 | entry_symbol = buffer; | |
1199 | } | |
1200 | else | |
1201 | einfo (_("%P: warning: connot find thumb start symbol %s\n"), thumb_entry_symbol); | |
1202 | } | |
1203 | ||
252b5132 RH |
1204 | static char * |
1205 | gld${EMULATION_NAME}_get_script (isfile) | |
1206 | int *isfile; | |
1207 | EOF | |
1208 | ||
1209 | if test -n "$COMPILE_IN" | |
1210 | then | |
1211 | # Scripts compiled in. | |
1212 | ||
1213 | # sed commands to quote an ld script as a C string. | |
597e2591 | 1214 | sc="-f stringify.sed" |
252b5132 RH |
1215 | |
1216 | cat >>e${EMULATION_NAME}.c <<EOF | |
1217 | { | |
1218 | *isfile = 0; | |
1219 | ||
1220 | if (link_info.relocateable == true && config.build_constructors == true) | |
1221 | return | |
1222 | EOF | |
1223 | sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c | |
1224 | echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c | |
1225 | sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c | |
1226 | echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c | |
1227 | sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c | |
1228 | echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c | |
1229 | sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c | |
a0290afa NC |
1230 | if test -n "$GENERATE_SHLIB_SCRIPT" ; then |
1231 | echo ' ; else if (link_info.shared) return' >> e${EMULATION_NAME}.c | |
1232 | sed $sc ldscripts/${EMULATION_NAME}.xs >> e${EMULATION_NAME}.c | |
1233 | fi | |
252b5132 RH |
1234 | echo ' ; else return' >> e${EMULATION_NAME}.c |
1235 | sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c | |
1236 | echo '; }' >> e${EMULATION_NAME}.c | |
1237 | ||
1238 | else | |
1239 | # Scripts read from the filesystem. | |
1240 | ||
1241 | cat >>e${EMULATION_NAME}.c <<EOF | |
1242 | { | |
1243 | *isfile = 1; | |
1244 | ||
1245 | if (link_info.relocateable == true && config.build_constructors == true) | |
1246 | return "ldscripts/${EMULATION_NAME}.xu"; | |
1247 | else if (link_info.relocateable == true) | |
1248 | return "ldscripts/${EMULATION_NAME}.xr"; | |
1249 | else if (!config.text_read_only) | |
1250 | return "ldscripts/${EMULATION_NAME}.xbn"; | |
1251 | else if (!config.magic_demand_paged) | |
1252 | return "ldscripts/${EMULATION_NAME}.xn"; | |
a0290afa NC |
1253 | else if (link_info.shared) |
1254 | return "ldscripts/${EMULATION_NAME}.xs"; | |
252b5132 RH |
1255 | else |
1256 | return "ldscripts/${EMULATION_NAME}.x"; | |
1257 | } | |
1258 | EOF | |
1259 | ||
1260 | fi | |
1261 | ||
1262 | cat >>e${EMULATION_NAME}.c <<EOF | |
1263 | ||
1264 | struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = | |
1265 | { | |
1266 | gld${EMULATION_NAME}_before_parse, | |
1267 | syslib_default, | |
1268 | hll_default, | |
1269 | after_parse_default, | |
1270 | gld${EMULATION_NAME}_after_open, | |
1271 | after_allocation_default, | |
1272 | set_output_arch_default, | |
1273 | ldemul_default_target, | |
1274 | gld${EMULATION_NAME}_before_allocation, | |
1275 | gld${EMULATION_NAME}_get_script, | |
1276 | "${EMULATION_NAME}", | |
1277 | "${OUTPUT_FORMAT}", | |
6f798e5c | 1278 | gld${EMULATION_NAME}_finish, /* finish */ |
252b5132 | 1279 | NULL, /* create output section statements */ |
1220a729 NC |
1280 | gld${EMULATION_NAME}_open_dynamic_archive, |
1281 | gld${EMULATION_NAME}_place_orphan, | |
252b5132 | 1282 | NULL, /* set_symbols */ |
7ca69e9e | 1283 | gld${EMULATION_NAME}_parse_args, |
252b5132 | 1284 | NULL, /* unrecognised file */ |
7ca69e9e NC |
1285 | gld${EMULATION_NAME}_list_options, |
1286 | NULL /* recognized file */ | |
252b5132 RH |
1287 | }; |
1288 | EOF |