Commit | Line | Data |
---|---|---|
252b5132 RH |
1 | # This shell script emits a C file. -*- C -*- |
2 | # It does some substitutions. | |
3 | # This file is now misnamed, because it supports both 32 bit and 64 bit | |
4 | # ELF emulations. | |
5 | test -z "${ELFSIZE}" && ELFSIZE=32 | |
6 | cat >e${EMULATION_NAME}.c <<EOF | |
7 | /* This file is is generated by a shell script. DO NOT EDIT! */ | |
8 | ||
9 | /* ${ELFSIZE} bit ELF emulation code for ${EMULATION_NAME} | |
b71e2778 | 10 | Copyright (C) 1991, 93, 94, 95, 96, 97, 98, 99, 2000 |
87f2a346 | 11 | Free Software Foundation, Inc. |
252b5132 RH |
12 | Written by Steve Chamberlain <sac@cygnus.com> |
13 | ELF support by Ian Lance Taylor <ian@cygnus.com> | |
14 | ||
15 | This file is part of GLD, the Gnu Linker. | |
16 | ||
17 | This program is free software; you can redistribute it and/or modify | |
18 | it under the terms of the GNU General Public License as published by | |
19 | the Free Software Foundation; either version 2 of the License, or | |
20 | (at your option) any later version. | |
21 | ||
22 | This program is distributed in the hope that it will be useful, | |
23 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
24 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
25 | GNU General Public License for more details. | |
26 | ||
27 | You should have received a copy of the GNU General Public License | |
28 | along with this program; if not, write to the Free Software | |
29 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
30 | ||
31 | #define TARGET_IS_${EMULATION_NAME} | |
32 | ||
33 | #include "bfd.h" | |
34 | #include "sysdep.h" | |
35 | ||
36 | #include <ctype.h> | |
37 | ||
38 | #include "bfdlink.h" | |
39 | ||
40 | #include "ld.h" | |
41 | #include "ldmain.h" | |
252b5132 RH |
42 | #include "ldmisc.h" |
43 | #include "ldexp.h" | |
44 | #include "ldlang.h" | |
b71e2778 AM |
45 | #include "ldfile.h" |
46 | #include "ldemul.h" | |
252b5132 | 47 | #include "ldgram.h" |
e0ee487b | 48 | #include "elf/common.h" |
252b5132 RH |
49 | |
50 | static void gld${EMULATION_NAME}_before_parse PARAMS ((void)); | |
04925e1e | 51 | static void gld${EMULATION_NAME}_vercheck |
252b5132 RH |
52 | PARAMS ((lang_input_statement_type *)); |
53 | static void gld${EMULATION_NAME}_stat_needed | |
54 | PARAMS ((lang_input_statement_type *)); | |
04925e1e | 55 | static boolean gld${EMULATION_NAME}_try_needed PARAMS ((const char *, int)); |
252b5132 RH |
56 | static boolean gld${EMULATION_NAME}_search_needed |
57 | PARAMS ((const char *, const char *, int)); | |
04925e1e | 58 | static void gld${EMULATION_NAME}_check_needed |
252b5132 | 59 | PARAMS ((lang_input_statement_type *)); |
04925e1e AM |
60 | static void gld${EMULATION_NAME}_after_open PARAMS ((void)); |
61 | static void gld${EMULATION_NAME}_find_exp_assignment PARAMS ((etree_type *)); | |
252b5132 RH |
62 | static void gld${EMULATION_NAME}_find_statement_assignment |
63 | PARAMS ((lang_statement_union_type *)); | |
04925e1e AM |
64 | static void gld${EMULATION_NAME}_before_allocation PARAMS ((void)); |
65 | static boolean gld${EMULATION_NAME}_open_dynamic_archive | |
66 | PARAMS ((const char *, search_dirs_type *, lang_input_statement_type *)); | |
67 | static lang_output_section_statement_type *output_rel_find PARAMS ((void)); | |
252b5132 RH |
68 | static boolean gld${EMULATION_NAME}_place_orphan |
69 | PARAMS ((lang_input_statement_type *, asection *)); | |
252b5132 RH |
70 | static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile)); |
71 | ||
41392f03 AM |
72 | EOF |
73 | ||
74 | # Import any needed special functions and/or overrides. | |
75 | # | |
76 | if test -n "$EXTRA_EM_FILE" ; then | |
77 | . ${srcdir}/emultempl/${EXTRA_EM_FILE}.em | |
78 | fi | |
79 | ||
80 | # Functions in this file can be overriden by setting the LDEMUL_* shell | |
81 | # variables. If the name of the overriding function is the same as is | |
82 | # defined in this file, then don't output this file's version. | |
83 | # If a different overriding name is given then output the standard function | |
84 | # as presumably it is called from the overriding function. | |
85 | # | |
86 | if test x"$LDEMUL_BEFORE_PARSE" != xgld"$EMULATION_NAME"_before_parse; then | |
87 | cat >>e${EMULATION_NAME}.c <<EOF | |
88 | ||
252b5132 | 89 | static void |
41392f03 | 90 | gld${EMULATION_NAME}_before_parse () |
252b5132 RH |
91 | { |
92 | ldfile_output_architecture = bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`; | |
93 | config.dynamic_link = ${DYNAMIC_LINK-true}; | |
94 | config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo true ; else echo false ; fi`; | |
95 | } | |
96 | ||
41392f03 AM |
97 | EOF |
98 | fi | |
99 | ||
100 | cat >>e${EMULATION_NAME}.c <<EOF | |
252b5132 RH |
101 | |
102 | /* These variables are required to pass information back and forth | |
103 | between after_open and check_needed and stat_needed and vercheck. */ | |
104 | ||
105 | static struct bfd_link_needed_list *global_needed; | |
106 | static struct stat global_stat; | |
107 | static boolean global_found; | |
108 | static struct bfd_link_needed_list *global_vercheck_needed; | |
109 | static boolean global_vercheck_failed; | |
110 | ||
252b5132 | 111 | |
04925e1e AM |
112 | /* On Linux, it's possible to have different versions of the same |
113 | shared library linked against different versions of libc. The | |
114 | dynamic linker somehow tags which libc version to use in | |
115 | /etc/ld.so.cache, and, based on the libc that it sees in the | |
116 | executable, chooses which version of the shared library to use. | |
252b5132 | 117 | |
04925e1e AM |
118 | We try to do a similar check here by checking whether this shared |
119 | library needs any other shared libraries which may conflict with | |
120 | libraries we have already included in the link. If it does, we | |
121 | skip it, and try to find another shared library farther on down the | |
122 | link path. | |
252b5132 | 123 | |
04925e1e AM |
124 | This is called via lang_for_each_input_file. |
125 | GLOBAL_VERCHECK_NEEDED is the list of objects needed by the object | |
126 | which we ar checking. This sets GLOBAL_VERCHECK_FAILED if we find | |
127 | a conflicting version. */ | |
252b5132 | 128 | |
04925e1e AM |
129 | static void |
130 | gld${EMULATION_NAME}_vercheck (s) | |
131 | lang_input_statement_type *s; | |
132 | { | |
133 | const char *soname, *f; | |
134 | struct bfd_link_needed_list *l; | |
252b5132 | 135 | |
04925e1e AM |
136 | if (global_vercheck_failed) |
137 | return; | |
138 | if (s->the_bfd == NULL | |
139 | || (bfd_get_file_flags (s->the_bfd) & DYNAMIC) == 0) | |
140 | return; | |
252b5132 | 141 | |
04925e1e AM |
142 | soname = bfd_elf_get_dt_soname (s->the_bfd); |
143 | if (soname == NULL) | |
144 | soname = bfd_get_filename (s->the_bfd); | |
145 | ||
146 | f = strrchr (soname, '/'); | |
147 | if (f != NULL) | |
148 | ++f; | |
149 | else | |
150 | f = soname; | |
151 | ||
152 | for (l = global_vercheck_needed; l != NULL; l = l->next) | |
153 | { | |
154 | const char *suffix; | |
155 | ||
156 | if (strcmp (f, l->name) == 0) | |
157 | { | |
158 | /* Probably can't happen, but it's an easy check. */ | |
159 | continue; | |
252b5132 RH |
160 | } |
161 | ||
04925e1e | 162 | if (strchr (l->name, '/') != NULL) |
252b5132 RH |
163 | continue; |
164 | ||
04925e1e AM |
165 | suffix = strstr (l->name, ".so."); |
166 | if (suffix == NULL) | |
167 | continue; | |
168 | ||
169 | suffix += sizeof ".so." - 1; | |
170 | ||
171 | if (strncmp (f, l->name, suffix - l->name) == 0) | |
172 | { | |
173 | /* Here we know that S is a dynamic object FOO.SO.VER1, and | |
174 | the object we are considering needs a dynamic object | |
175 | FOO.SO.VER2, and VER1 and VER2 are different. This | |
176 | appears to be a version mismatch, so we tell the caller | |
177 | to try a different version of this library. */ | |
178 | global_vercheck_failed = true; | |
179 | return; | |
180 | } | |
252b5132 RH |
181 | } |
182 | } | |
183 | ||
252b5132 | 184 | |
04925e1e AM |
185 | /* See if an input file matches a DT_NEEDED entry by running stat on |
186 | the file. */ | |
187 | ||
188 | static void | |
189 | gld${EMULATION_NAME}_stat_needed (s) | |
190 | lang_input_statement_type *s; | |
252b5132 | 191 | { |
04925e1e AM |
192 | struct stat st; |
193 | const char *suffix; | |
194 | const char *soname; | |
195 | const char *f; | |
252b5132 | 196 | |
04925e1e AM |
197 | if (global_found) |
198 | return; | |
199 | if (s->the_bfd == NULL) | |
200 | return; | |
201 | ||
202 | if (bfd_stat (s->the_bfd, &st) != 0) | |
252b5132 | 203 | { |
04925e1e AM |
204 | einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd); |
205 | return; | |
206 | } | |
252b5132 | 207 | |
04925e1e AM |
208 | if (st.st_dev == global_stat.st_dev |
209 | && st.st_ino == global_stat.st_ino) | |
210 | { | |
211 | global_found = true; | |
212 | return; | |
213 | } | |
252b5132 | 214 | |
04925e1e AM |
215 | /* We issue a warning if it looks like we are including two |
216 | different versions of the same shared library. For example, | |
217 | there may be a problem if -lc picks up libc.so.6 but some other | |
218 | shared library has a DT_NEEDED entry of libc.so.5. This is a | |
219 | hueristic test, and it will only work if the name looks like | |
220 | NAME.so.VERSION. FIXME: Depending on file names is error-prone. | |
221 | If we really want to issue warnings about mixing version numbers | |
222 | of shared libraries, we need to find a better way. */ | |
252b5132 | 223 | |
04925e1e AM |
224 | if (strchr (global_needed->name, '/') != NULL) |
225 | return; | |
226 | suffix = strstr (global_needed->name, ".so."); | |
227 | if (suffix == NULL) | |
228 | return; | |
229 | suffix += sizeof ".so." - 1; | |
252b5132 | 230 | |
04925e1e AM |
231 | soname = bfd_elf_get_dt_soname (s->the_bfd); |
232 | if (soname == NULL) | |
233 | soname = s->filename; | |
252b5132 | 234 | |
04925e1e AM |
235 | f = strrchr (soname, '/'); |
236 | if (f != NULL) | |
237 | ++f; | |
238 | else | |
239 | f = soname; | |
252b5132 | 240 | |
04925e1e AM |
241 | if (strncmp (f, global_needed->name, suffix - global_needed->name) == 0) |
242 | einfo ("%P: warning: %s, needed by %B, may conflict with %s\n", | |
243 | global_needed->name, global_needed->by, f); | |
252b5132 RH |
244 | } |
245 | ||
04925e1e | 246 | |
252b5132 RH |
247 | /* This function is called for each possible name for a dynamic object |
248 | named by a DT_NEEDED entry. The FORCE parameter indicates whether | |
249 | to skip the check for a conflicting version. */ | |
250 | ||
251 | static boolean | |
252 | gld${EMULATION_NAME}_try_needed (name, force) | |
253 | const char *name; | |
254 | int force; | |
255 | { | |
256 | bfd *abfd; | |
ec4eb78a | 257 | const char *soname; |
252b5132 RH |
258 | |
259 | abfd = bfd_openr (name, bfd_get_target (output_bfd)); | |
260 | if (abfd == NULL) | |
261 | return false; | |
262 | if (! bfd_check_format (abfd, bfd_object)) | |
263 | { | |
264 | (void) bfd_close (abfd); | |
265 | return false; | |
266 | } | |
267 | if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0) | |
268 | { | |
269 | (void) bfd_close (abfd); | |
270 | return false; | |
271 | } | |
272 | ||
273 | /* Check whether this object would include any conflicting library | |
274 | versions. If FORCE is set, then we skip this check; we use this | |
275 | the second time around, if we couldn't find any compatible | |
276 | instance of the shared library. */ | |
277 | ||
278 | if (! force) | |
279 | { | |
280 | struct bfd_link_needed_list *needed; | |
281 | ||
282 | if (! bfd_elf_get_bfd_needed_list (abfd, &needed)) | |
283 | einfo ("%F%P:%B: bfd_elf_get_bfd_needed_list failed: %E\n", abfd); | |
284 | ||
285 | if (needed != NULL) | |
286 | { | |
287 | global_vercheck_needed = needed; | |
288 | global_vercheck_failed = false; | |
289 | lang_for_each_input_file (gld${EMULATION_NAME}_vercheck); | |
290 | if (global_vercheck_failed) | |
291 | { | |
292 | (void) bfd_close (abfd); | |
293 | /* Return false to force the caller to move on to try | |
294 | another file on the search path. */ | |
295 | return false; | |
296 | } | |
297 | ||
298 | /* But wait! It gets much worse. On Linux, if a shared | |
299 | library does not use libc at all, we are supposed to skip | |
300 | it the first time around in case we encounter a shared | |
301 | library later on with the same name which does use the | |
302 | version of libc that we want. This is much too horrible | |
303 | to use on any system other than Linux. */ | |
304 | ||
305 | EOF | |
306 | case ${target} in | |
307 | *-*-linux-gnu*) | |
308 | cat >>e${EMULATION_NAME}.c <<EOF | |
309 | { | |
310 | struct bfd_link_needed_list *l; | |
311 | ||
312 | for (l = needed; l != NULL; l = l->next) | |
313 | if (strncmp (l->name, "libc.so", 7) == 0) | |
314 | break; | |
315 | if (l == NULL) | |
316 | { | |
317 | (void) bfd_close (abfd); | |
318 | return false; | |
319 | } | |
320 | } | |
321 | ||
322 | EOF | |
323 | ;; | |
324 | esac | |
325 | cat >>e${EMULATION_NAME}.c <<EOF | |
326 | } | |
327 | } | |
328 | ||
329 | /* We've found a dynamic object matching the DT_NEEDED entry. */ | |
330 | ||
04925e1e AM |
331 | /* We have already checked that there is no other input file of the |
332 | same name. We must now check again that we are not including the | |
333 | same file twice. We need to do this because on many systems | |
334 | libc.so is a symlink to, e.g., libc.so.1. The SONAME entry will | |
335 | reference libc.so.1. If we have already included libc.so, we | |
336 | don't want to include libc.so.1 if they are the same file, and we | |
337 | can only check that using stat. */ | |
338 | ||
339 | if (bfd_stat (abfd, &global_stat) != 0) | |
340 | einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd); | |
ec4eb78a L |
341 | |
342 | /* First strip off everything before the last '/'. */ | |
343 | soname = strrchr (abfd->filename, '/'); | |
344 | if (soname) | |
345 | soname++; | |
346 | else | |
347 | soname = abfd->filename; | |
348 | ||
349 | if (trace_file_tries) | |
350 | info_msg (_("found %s at %s\n"), soname, name); | |
351 | ||
04925e1e AM |
352 | global_found = false; |
353 | lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed); | |
354 | if (global_found) | |
355 | { | |
356 | /* Return true to indicate that we found the file, even though | |
357 | we aren't going to do anything with it. */ | |
358 | return true; | |
359 | } | |
360 | ||
41392f03 | 361 | /* Tell the ELF backend that we don't want the output file to have a |
04925e1e AM |
362 | DT_NEEDED entry for this file. */ |
363 | bfd_elf_set_dt_needed_name (abfd, ""); | |
364 | ||
04925e1e AM |
365 | /* Tell the ELF backend that the output file needs a DT_NEEDED |
366 | entry for this file if it is used to resolve the reference in | |
367 | a regular object. */ | |
ec4eb78a | 368 | bfd_elf_set_dt_needed_soname (abfd, soname); |
04925e1e AM |
369 | |
370 | /* Add this file into the symbol table. */ | |
371 | if (! bfd_link_add_symbols (abfd, &link_info)) | |
372 | einfo ("%F%B: could not read symbols: %E\n", abfd); | |
373 | ||
374 | return true; | |
375 | } | |
376 | ||
377 | ||
378 | /* Search for a needed file in a path. */ | |
379 | ||
380 | static boolean | |
381 | gld${EMULATION_NAME}_search_needed (path, name, force) | |
382 | const char *path; | |
383 | const char *name; | |
384 | int force; | |
385 | { | |
386 | const char *s; | |
387 | size_t len; | |
388 | ||
389 | if (path == NULL || *path == '\0') | |
390 | return false; | |
391 | len = strlen (name); | |
392 | while (1) | |
393 | { | |
394 | char *filename, *sset; | |
395 | ||
396 | s = strchr (path, ':'); | |
397 | if (s == NULL) | |
398 | s = path + strlen (path); | |
399 | ||
400 | filename = (char *) xmalloc (s - path + len + 2); | |
401 | if (s == path) | |
402 | sset = filename; | |
403 | else | |
404 | { | |
405 | memcpy (filename, path, s - path); | |
406 | filename[s - path] = '/'; | |
407 | sset = filename + (s - path) + 1; | |
408 | } | |
409 | strcpy (sset, name); | |
410 | ||
411 | if (gld${EMULATION_NAME}_try_needed (filename, force)) | |
412 | return true; | |
413 | ||
414 | free (filename); | |
415 | ||
416 | if (*s == '\0') | |
417 | break; | |
418 | path = s + 1; | |
419 | } | |
420 | ||
421 | return false; | |
422 | } | |
423 | ||
424 | EOF | |
425 | if [ "x${host}" = "x${target}" ] ; then | |
426 | case " ${EMULATION_LIBPATH} " in | |
427 | *" ${EMULATION_NAME} "*) | |
428 | cat >>e${EMULATION_NAME}.c <<EOF | |
429 | ||
430 | /* For a native linker, check the file /etc/ld.so.conf for directories | |
431 | in which we may find shared libraries. /etc/ld.so.conf is really | |
432 | only meaningful on Linux, but we check it on other systems anyhow. */ | |
433 | ||
434 | static boolean gld${EMULATION_NAME}_check_ld_so_conf | |
435 | PARAMS ((const char *, int)); | |
436 | ||
437 | static boolean | |
438 | gld${EMULATION_NAME}_check_ld_so_conf (name, force) | |
439 | const char *name; | |
440 | int force; | |
441 | { | |
442 | static boolean initialized; | |
443 | static char *ld_so_conf; | |
444 | ||
445 | if (! initialized) | |
446 | { | |
447 | FILE *f; | |
448 | ||
449 | f = fopen ("/etc/ld.so.conf", FOPEN_RT); | |
450 | if (f != NULL) | |
451 | { | |
452 | char *b; | |
453 | size_t len, alloc; | |
454 | int c; | |
455 | ||
456 | len = 0; | |
457 | alloc = 100; | |
458 | b = (char *) xmalloc (alloc); | |
459 | ||
460 | while ((c = getc (f)) != EOF) | |
461 | { | |
462 | if (len + 1 >= alloc) | |
463 | { | |
464 | alloc *= 2; | |
465 | b = (char *) xrealloc (b, alloc); | |
466 | } | |
467 | if (c != ':' | |
468 | && c != ' ' | |
469 | && c != '\t' | |
470 | && c != '\n' | |
471 | && c != ',') | |
472 | { | |
473 | b[len] = c; | |
474 | ++len; | |
475 | } | |
476 | else | |
477 | { | |
478 | if (len > 0 && b[len - 1] != ':') | |
479 | { | |
480 | b[len] = ':'; | |
481 | ++len; | |
482 | } | |
483 | } | |
484 | } | |
485 | ||
486 | if (len > 0 && b[len - 1] == ':') | |
487 | --len; | |
252b5132 | 488 | |
04925e1e AM |
489 | if (len > 0) |
490 | b[len] = '\0'; | |
491 | else | |
492 | { | |
493 | free (b); | |
494 | b = NULL; | |
495 | } | |
252b5132 | 496 | |
04925e1e | 497 | fclose (f); |
252b5132 | 498 | |
04925e1e AM |
499 | ld_so_conf = b; |
500 | } | |
49e56c49 | 501 | |
04925e1e AM |
502 | initialized = true; |
503 | } | |
49e56c49 | 504 | |
04925e1e AM |
505 | if (ld_so_conf == NULL) |
506 | return false; | |
252b5132 | 507 | |
04925e1e | 508 | return gld${EMULATION_NAME}_search_needed (ld_so_conf, name, force); |
252b5132 RH |
509 | } |
510 | ||
04925e1e AM |
511 | EOF |
512 | ;; | |
513 | esac | |
514 | fi | |
515 | cat >>e${EMULATION_NAME}.c <<EOF | |
516 | ||
252b5132 RH |
517 | /* See if an input file matches a DT_NEEDED entry by name. */ |
518 | ||
519 | static void | |
520 | gld${EMULATION_NAME}_check_needed (s) | |
521 | lang_input_statement_type *s; | |
522 | { | |
523 | if (global_found) | |
524 | return; | |
525 | ||
526 | if (s->filename != NULL | |
527 | && strcmp (s->filename, global_needed->name) == 0) | |
528 | { | |
529 | global_found = true; | |
530 | return; | |
531 | } | |
532 | ||
533 | if (s->the_bfd != NULL) | |
534 | { | |
535 | const char *soname; | |
536 | ||
537 | soname = bfd_elf_get_dt_soname (s->the_bfd); | |
538 | if (soname != NULL | |
539 | && strcmp (soname, global_needed->name) == 0) | |
540 | { | |
541 | global_found = true; | |
542 | return; | |
543 | } | |
544 | } | |
545 | ||
546 | if (s->search_dirs_flag | |
547 | && s->filename != NULL | |
548 | && strchr (global_needed->name, '/') == NULL) | |
549 | { | |
550 | const char *f; | |
551 | ||
552 | f = strrchr (s->filename, '/'); | |
553 | if (f != NULL | |
554 | && strcmp (f + 1, global_needed->name) == 0) | |
555 | { | |
556 | global_found = true; | |
557 | return; | |
558 | } | |
559 | } | |
560 | } | |
561 | ||
41392f03 AM |
562 | EOF |
563 | ||
564 | if test x"$LDEMUL_AFTER_OPEN" != xgld"$EMULATION_NAME"_after_open; then | |
565 | cat >>e${EMULATION_NAME}.c <<EOF | |
04925e1e AM |
566 | |
567 | /* This is called after all the input files have been opened. */ | |
252b5132 RH |
568 | |
569 | static void | |
04925e1e | 570 | gld${EMULATION_NAME}_after_open () |
252b5132 | 571 | { |
04925e1e | 572 | struct bfd_link_needed_list *needed, *l; |
ec4eb78a L |
573 | EOF |
574 | if [ "x${host}" = "x${target}" ] ; then | |
575 | case " ${EMULATION_LIBPATH} " in | |
576 | *" ${EMULATION_NAME} "*) | |
577 | cat >>e${EMULATION_NAME}.c <<EOF | |
578 | struct bfd_link_needed_list *run_path; | |
579 | EOF | |
580 | ;; | |
581 | esac | |
582 | fi | |
583 | cat >>e${EMULATION_NAME}.c <<EOF | |
252b5132 | 584 | |
04925e1e AM |
585 | /* We only need to worry about this when doing a final link. */ |
586 | if (link_info.relocateable || link_info.shared) | |
252b5132 RH |
587 | return; |
588 | ||
ec4eb78a L |
589 | EOF |
590 | if [ "x${host}" = "x${target}" ] ; then | |
591 | case " ${EMULATION_LIBPATH} " in | |
592 | *" ${EMULATION_NAME} "*) | |
593 | cat >>e${EMULATION_NAME}.c <<EOF | |
594 | run_path = bfd_elf_get_runpath_list (output_bfd, &link_info); | |
595 | EOF | |
596 | ;; | |
597 | esac | |
598 | fi | |
599 | cat >>e${EMULATION_NAME}.c <<EOF | |
600 | ||
04925e1e AM |
601 | /* Get the list of files which appear in DT_NEEDED entries in |
602 | dynamic objects included in the link (often there will be none). | |
603 | For each such file, we want to track down the corresponding | |
604 | library, and include the symbol table in the link. This is what | |
605 | the runtime dynamic linker will do. Tracking the files down here | |
606 | permits one dynamic object to include another without requiring | |
607 | special action by the person doing the link. Note that the | |
608 | needed list can actually grow while we are stepping through this | |
609 | loop. */ | |
610 | needed = bfd_elf_get_needed_list (output_bfd, &link_info); | |
611 | for (l = needed; l != NULL; l = l->next) | |
252b5132 | 612 | { |
04925e1e AM |
613 | struct bfd_link_needed_list *ll; |
614 | int force; | |
ec4eb78a L |
615 | EOF |
616 | if [ "x${host}" = "x${target}" ] ; then | |
617 | case " ${EMULATION_LIBPATH} " in | |
618 | *" ${EMULATION_NAME} "*) | |
619 | cat >>e${EMULATION_NAME}.c <<EOF | |
620 | struct bfd_link_needed_list *rp; | |
621 | int found; | |
622 | EOF | |
623 | ;; | |
624 | esac | |
625 | fi | |
626 | cat >>e${EMULATION_NAME}.c <<EOF | |
252b5132 | 627 | |
04925e1e AM |
628 | /* If we've already seen this file, skip it. */ |
629 | for (ll = needed; ll != l; ll = ll->next) | |
630 | if (strcmp (ll->name, l->name) == 0) | |
631 | break; | |
632 | if (ll != l) | |
633 | continue; | |
252b5132 | 634 | |
04925e1e AM |
635 | /* See if this file was included in the link explicitly. */ |
636 | global_needed = l; | |
637 | global_found = false; | |
638 | lang_for_each_input_file (gld${EMULATION_NAME}_check_needed); | |
639 | if (global_found) | |
640 | continue; | |
252b5132 | 641 | |
ec4eb78a L |
642 | if (trace_file_tries) |
643 | info_msg (_("%s needed by %B\n"), l->name, l->by); | |
644 | ||
04925e1e AM |
645 | /* We need to find this file and include the symbol table. We |
646 | want to search for the file in the same way that the dynamic | |
647 | linker will search. That means that we want to use | |
648 | rpath_link, rpath, then the environment variable | |
ec4eb78a L |
649 | LD_LIBRARY_PATH (native only), then the DT_RPATH/DT_RUNPATH |
650 | entries (native only), then the linker script LIB_SEARCH_DIRS. | |
651 | We do not search using the -L arguments. | |
252b5132 | 652 | |
04925e1e AM |
653 | We search twice. The first time, we skip objects which may |
654 | introduce version mismatches. The second time, we force | |
655 | their use. See gld${EMULATION_NAME}_vercheck comment. */ | |
656 | for (force = 0; force < 2; force++) | |
657 | { | |
658 | const char *lib_path; | |
659 | size_t len; | |
660 | search_dirs_type *search; | |
252b5132 | 661 | |
04925e1e AM |
662 | if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link, |
663 | l->name, force)) | |
664 | break; | |
665 | if (gld${EMULATION_NAME}_search_needed (command_line.rpath, | |
666 | l->name, force)) | |
667 | break; | |
668 | if (command_line.rpath_link == NULL | |
669 | && command_line.rpath == NULL) | |
670 | { | |
671 | lib_path = (const char *) getenv ("LD_RUN_PATH"); | |
672 | if (gld${EMULATION_NAME}_search_needed (lib_path, l->name, | |
673 | force)) | |
674 | break; | |
675 | } | |
676 | EOF | |
677 | if [ "x${host}" = "x${target}" ] ; then | |
678 | case " ${EMULATION_LIBPATH} " in | |
679 | *" ${EMULATION_NAME} "*) | |
680 | cat >>e${EMULATION_NAME}.c <<EOF | |
681 | lib_path = (const char *) getenv ("LD_LIBRARY_PATH"); | |
682 | if (gld${EMULATION_NAME}_search_needed (lib_path, l->name, force)) | |
683 | break; | |
ec4eb78a L |
684 | |
685 | found = 0; | |
686 | for (rp = run_path; !found && rp != NULL; rp = rp->next) | |
687 | { | |
688 | found = (rp->by == l->by | |
689 | && gld${EMULATION_NAME}_search_needed (rp->name, | |
690 | l->name, | |
691 | force)); | |
692 | } | |
693 | if (found) | |
694 | break; | |
695 | ||
04925e1e AM |
696 | EOF |
697 | ;; | |
698 | esac | |
699 | fi | |
700 | cat >>e${EMULATION_NAME}.c <<EOF | |
701 | len = strlen (l->name); | |
702 | for (search = search_head; search != NULL; search = search->next) | |
703 | { | |
704 | char *filename; | |
252b5132 | 705 | |
04925e1e AM |
706 | if (search->cmdline) |
707 | continue; | |
708 | filename = (char *) xmalloc (strlen (search->name) + len + 2); | |
709 | sprintf (filename, "%s/%s", search->name, l->name); | |
710 | if (gld${EMULATION_NAME}_try_needed (filename, force)) | |
711 | break; | |
712 | free (filename); | |
713 | } | |
714 | if (search != NULL) | |
715 | break; | |
716 | EOF | |
717 | if [ "x${host}" = "x${target}" ] ; then | |
718 | case " ${EMULATION_LIBPATH} " in | |
719 | *" ${EMULATION_NAME} "*) | |
720 | cat >>e${EMULATION_NAME}.c <<EOF | |
721 | if (gld${EMULATION_NAME}_check_ld_so_conf (l->name, force)) | |
722 | break; | |
723 | EOF | |
724 | ;; | |
725 | esac | |
726 | fi | |
727 | cat >>e${EMULATION_NAME}.c <<EOF | |
728 | } | |
252b5132 | 729 | |
04925e1e AM |
730 | if (force < 2) |
731 | continue; | |
252b5132 | 732 | |
e374f1d9 | 733 | einfo ("%P: warning: %s, needed by %B, not found (try using -rpath or -rpath-link)\n", |
04925e1e AM |
734 | l->name, l->by); |
735 | } | |
736 | } | |
252b5132 | 737 | |
41392f03 AM |
738 | EOF |
739 | fi | |
740 | ||
741 | cat >>e${EMULATION_NAME}.c <<EOF | |
252b5132 | 742 | |
04925e1e | 743 | /* Look through an expression for an assignment statement. */ |
252b5132 | 744 | |
04925e1e AM |
745 | static void |
746 | gld${EMULATION_NAME}_find_exp_assignment (exp) | |
747 | etree_type *exp; | |
748 | { | |
749 | struct bfd_link_hash_entry *h; | |
750 | ||
751 | switch (exp->type.node_class) | |
252b5132 | 752 | { |
04925e1e AM |
753 | case etree_provide: |
754 | h = bfd_link_hash_lookup (link_info.hash, exp->assign.dst, | |
755 | false, false, false); | |
756 | if (h == NULL) | |
757 | break; | |
252b5132 | 758 | |
04925e1e AM |
759 | /* We call record_link_assignment even if the symbol is defined. |
760 | This is because if it is defined by a dynamic object, we | |
761 | actually want to use the value defined by the linker script, | |
762 | not the value from the dynamic object (because we are setting | |
763 | symbols like etext). If the symbol is defined by a regular | |
764 | object, then, as it happens, calling record_link_assignment | |
765 | will do no harm. */ | |
766 | ||
767 | /* Fall through. */ | |
768 | case etree_assign: | |
769 | if (strcmp (exp->assign.dst, ".") != 0) | |
252b5132 | 770 | { |
04925e1e AM |
771 | if (! (bfd_elf${ELFSIZE}_record_link_assignment |
772 | (output_bfd, &link_info, exp->assign.dst, | |
773 | exp->type.node_class == etree_provide ? true : false))) | |
774 | einfo ("%P%F: failed to record assignment to %s: %E\n", | |
775 | exp->assign.dst); | |
252b5132 | 776 | } |
04925e1e AM |
777 | gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src); |
778 | break; | |
252b5132 | 779 | |
04925e1e AM |
780 | case etree_binary: |
781 | gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs); | |
782 | gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs); | |
783 | break; | |
252b5132 | 784 | |
04925e1e AM |
785 | case etree_trinary: |
786 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond); | |
787 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs); | |
788 | gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs); | |
789 | break; | |
252b5132 | 790 | |
04925e1e AM |
791 | case etree_unary: |
792 | gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child); | |
793 | break; | |
252b5132 | 794 | |
04925e1e AM |
795 | default: |
796 | break; | |
252b5132 RH |
797 | } |
798 | } | |
799 | ||
04925e1e AM |
800 | |
801 | /* This is called by the before_allocation routine via | |
802 | lang_for_each_statement. It locates any assignment statements, and | |
803 | tells the ELF backend about them, in case they are assignments to | |
804 | symbols which are referred to by dynamic objects. */ | |
805 | ||
806 | static void | |
807 | gld${EMULATION_NAME}_find_statement_assignment (s) | |
808 | lang_statement_union_type *s; | |
809 | { | |
810 | if (s->header.type == lang_assignment_statement_enum) | |
811 | gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp); | |
812 | } | |
813 | ||
41392f03 AM |
814 | EOF |
815 | ||
816 | if test x"$LDEMUL_BEFORE_ALLOCATION" != xgld"$EMULATION_NAME"_before_allocation; then | |
817 | cat >>e${EMULATION_NAME}.c <<EOF | |
04925e1e | 818 | |
252b5132 RH |
819 | /* This is called after the sections have been attached to output |
820 | sections, but before any sizes or addresses have been set. */ | |
821 | ||
822 | static void | |
823 | gld${EMULATION_NAME}_before_allocation () | |
824 | { | |
825 | const char *rpath; | |
826 | asection *sinterp; | |
827 | ||
828 | /* If we are going to make any variable assignments, we need to let | |
829 | the ELF backend know about them in case the variables are | |
830 | referred to by dynamic objects. */ | |
831 | lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment); | |
832 | ||
833 | /* Let the ELF backend work out the sizes of any sections required | |
834 | by dynamic linking. */ | |
835 | rpath = command_line.rpath; | |
836 | if (rpath == NULL) | |
837 | rpath = (const char *) getenv ("LD_RUN_PATH"); | |
838 | if (! (bfd_elf${ELFSIZE}_size_dynamic_sections | |
839 | (output_bfd, command_line.soname, rpath, | |
840 | command_line.export_dynamic, command_line.filter_shlib, | |
841 | (const char * const *) command_line.auxiliary_filters, | |
842 | &link_info, &sinterp, lang_elf_version_info))) | |
843 | einfo ("%P%F: failed to set dynamic section sizes: %E\n"); | |
844 | ||
845 | /* Let the user override the dynamic linker we are using. */ | |
846 | if (command_line.interpreter != NULL | |
847 | && sinterp != NULL) | |
848 | { | |
849 | sinterp->contents = (bfd_byte *) command_line.interpreter; | |
850 | sinterp->_raw_size = strlen (command_line.interpreter) + 1; | |
851 | } | |
852 | ||
853 | /* Look for any sections named .gnu.warning. As a GNU extensions, | |
854 | we treat such sections as containing warning messages. We print | |
855 | out the warning message, and then zero out the section size so | |
856 | that it does not get copied into the output file. */ | |
857 | ||
858 | { | |
859 | LANG_FOR_EACH_INPUT_STATEMENT (is) | |
860 | { | |
861 | asection *s; | |
862 | bfd_size_type sz; | |
863 | char *msg; | |
864 | boolean ret; | |
865 | ||
866 | if (is->just_syms_flag) | |
867 | continue; | |
868 | ||
869 | s = bfd_get_section_by_name (is->the_bfd, ".gnu.warning"); | |
870 | if (s == NULL) | |
871 | continue; | |
872 | ||
873 | sz = bfd_section_size (is->the_bfd, s); | |
874 | msg = xmalloc ((size_t) sz + 1); | |
875 | if (! bfd_get_section_contents (is->the_bfd, s, msg, (file_ptr) 0, sz)) | |
876 | einfo ("%F%B: Can't read contents of section .gnu.warning: %E\n", | |
877 | is->the_bfd); | |
878 | msg[sz] = '\0'; | |
879 | ret = link_info.callbacks->warning (&link_info, msg, | |
880 | (const char *) NULL, | |
881 | is->the_bfd, (asection *) NULL, | |
882 | (bfd_vma) 0); | |
883 | ASSERT (ret); | |
884 | free (msg); | |
885 | ||
886 | /* Clobber the section size, so that we don't waste copying the | |
887 | warning into the output file. */ | |
888 | s->_raw_size = 0; | |
889 | } | |
890 | } | |
891 | } | |
892 | ||
41392f03 AM |
893 | EOF |
894 | fi | |
895 | ||
896 | if test x"$LDEMUL_OPEN_DYNAMIC_ARCHIVE" != xgld"$EMULATION_NAME"_open_dynamic_archive; then | |
897 | cat >>e${EMULATION_NAME}.c <<EOF | |
252b5132 | 898 | |
04925e1e AM |
899 | /* Try to open a dynamic archive. This is where we know that ELF |
900 | dynamic libraries have an extension of .so (or .sl on oddball systems | |
901 | like hpux). */ | |
902 | ||
903 | static boolean | |
904 | gld${EMULATION_NAME}_open_dynamic_archive (arch, search, entry) | |
905 | const char *arch; | |
906 | search_dirs_type *search; | |
907 | lang_input_statement_type *entry; | |
252b5132 | 908 | { |
04925e1e AM |
909 | const char *filename; |
910 | char *string; | |
252b5132 | 911 | |
04925e1e AM |
912 | if (! entry->is_archive) |
913 | return false; | |
252b5132 | 914 | |
04925e1e | 915 | filename = entry->filename; |
252b5132 | 916 | |
04925e1e AM |
917 | /* This allocates a few bytes too many when EXTRA_SHLIB_EXTENSION |
918 | is defined, but it does not seem worth the headache to optimize | |
919 | away those two bytes of space. */ | |
920 | string = (char *) xmalloc (strlen (search->name) | |
921 | + strlen (filename) | |
922 | + strlen (arch) | |
923 | #ifdef EXTRA_SHLIB_EXTENSION | |
924 | + strlen (EXTRA_SHLIB_EXTENSION) | |
925 | #endif | |
926 | + sizeof "/lib.so"); | |
927 | ||
928 | sprintf (string, "%s/lib%s%s.so", search->name, filename, arch); | |
929 | ||
930 | #ifdef EXTRA_SHLIB_EXTENSION | |
931 | /* Try the .so extension first. If that fails build a new filename | |
932 | using EXTRA_SHLIB_EXTENSION. */ | |
933 | if (! ldfile_try_open_bfd (string, entry)) | |
934 | sprintf (string, "%s/lib%s%s%s", search->name, | |
935 | filename, arch, EXTRA_SHLIB_EXTENSION); | |
936 | #endif | |
937 | ||
938 | if (! ldfile_try_open_bfd (string, entry)) | |
252b5132 | 939 | { |
04925e1e AM |
940 | free (string); |
941 | return false; | |
942 | } | |
252b5132 | 943 | |
04925e1e | 944 | entry->filename = string; |
252b5132 | 945 | |
04925e1e AM |
946 | /* We have found a dynamic object to include in the link. The ELF |
947 | backend linker will create a DT_NEEDED entry in the .dynamic | |
948 | section naming this file. If this file includes a DT_SONAME | |
949 | entry, it will be used. Otherwise, the ELF linker will just use | |
950 | the name of the file. For an archive found by searching, like | |
951 | this one, the DT_NEEDED entry should consist of just the name of | |
952 | the file, without the path information used to find it. Note | |
953 | that we only need to do this if we have a dynamic object; an | |
954 | archive will never be referenced by a DT_NEEDED entry. | |
252b5132 | 955 | |
04925e1e AM |
956 | FIXME: This approach--using bfd_elf_set_dt_needed_name--is not |
957 | very pretty. I haven't been able to think of anything that is | |
958 | pretty, though. */ | |
959 | if (bfd_check_format (entry->the_bfd, bfd_object) | |
960 | && (entry->the_bfd->flags & DYNAMIC) != 0) | |
961 | { | |
962 | char *needed_name; | |
252b5132 | 963 | |
04925e1e | 964 | ASSERT (entry->is_archive && entry->search_dirs_flag); |
252b5132 | 965 | |
04925e1e AM |
966 | /* Rather than duplicating the logic above. Just use the |
967 | filename we recorded earlier. | |
252b5132 | 968 | |
04925e1e AM |
969 | First strip off everything before the last '/'. */ |
970 | filename = strrchr (entry->filename, '/'); | |
971 | filename++; | |
972 | ||
973 | needed_name = (char *) xmalloc (strlen (filename) + 1); | |
974 | strcpy (needed_name, filename); | |
975 | bfd_elf_set_dt_needed_name (entry->the_bfd, needed_name); | |
976 | } | |
977 | ||
978 | return true; | |
979 | } | |
980 | ||
41392f03 AM |
981 | EOF |
982 | fi | |
983 | cat >>e${EMULATION_NAME}.c <<EOF | |
984 | ||
985 | /* A variant of lang_output_section_find. Used by place_orphan. */ | |
04925e1e | 986 | |
04925e1e AM |
987 | static lang_output_section_statement_type * |
988 | output_rel_find () | |
989 | { | |
990 | lang_statement_union_type *u; | |
991 | lang_output_section_statement_type *lookup; | |
992 | ||
993 | for (u = lang_output_section_statement.head; | |
994 | u != (lang_statement_union_type *) NULL; | |
995 | u = lookup->next) | |
996 | { | |
997 | lookup = &u->output_section_statement; | |
998 | if (strncmp (".rel", lookup->name, 4) == 0 | |
999 | && lookup->bfd_section != NULL | |
1000 | && (lookup->bfd_section->flags & SEC_ALLOC) != 0) | |
1001 | { | |
1002 | return lookup; | |
1003 | } | |
252b5132 | 1004 | } |
04925e1e | 1005 | return (lang_output_section_statement_type *) NULL; |
252b5132 RH |
1006 | } |
1007 | ||
41392f03 AM |
1008 | EOF |
1009 | ||
1010 | if test x"$LDEMUL_PLACE_ORPHAN" != xgld"$EMULATION_NAME"_place_orphan; then | |
1011 | cat >>e${EMULATION_NAME}.c <<EOF | |
04925e1e | 1012 | |
252b5132 RH |
1013 | /* Place an orphan section. We use this to put random SHF_ALLOC |
1014 | sections in the right segment. */ | |
1015 | ||
41392f03 | 1016 | struct orphan_save { |
6a345e87 | 1017 | lang_output_section_statement_type *os; |
5ba47421 | 1018 | asection **section; |
6a345e87 AM |
1019 | lang_statement_union_type **stmt; |
1020 | }; | |
252b5132 | 1021 | |
252b5132 RH |
1022 | static boolean |
1023 | gld${EMULATION_NAME}_place_orphan (file, s) | |
1024 | lang_input_statement_type *file; | |
1025 | asection *s; | |
1026 | { | |
aea4bd9d AM |
1027 | static struct orphan_save hold_text; |
1028 | static struct orphan_save hold_rodata; | |
1029 | static struct orphan_save hold_data; | |
1030 | static struct orphan_save hold_bss; | |
1031 | static struct orphan_save hold_rel; | |
1032 | static struct orphan_save hold_interp; | |
6a345e87 | 1033 | struct orphan_save *place; |
e374f1d9 | 1034 | lang_statement_list_type *old = NULL; |
252b5132 RH |
1035 | lang_statement_list_type add; |
1036 | etree_type *address; | |
e374f1d9 | 1037 | const char *secname, *ps = NULL; |
252b5132 RH |
1038 | const char *outsecname; |
1039 | lang_output_section_statement_type *os; | |
1040 | ||
aea4bd9d AM |
1041 | secname = bfd_get_section_name (s->owner, s); |
1042 | ||
252b5132 | 1043 | /* Look through the script to see where to place this section. */ |
aea4bd9d | 1044 | os = lang_output_section_find (secname); |
252b5132 | 1045 | |
aea4bd9d AM |
1046 | if (os != NULL |
1047 | && os->bfd_section != NULL | |
1048 | && ((s->flags ^ os->bfd_section->flags) & (SEC_LOAD | SEC_ALLOC)) == 0) | |
252b5132 RH |
1049 | { |
1050 | /* We have already placed a section with this name. */ | |
aea4bd9d | 1051 | wild_doit (&os->children, s, os, file); |
252b5132 RH |
1052 | return true; |
1053 | } | |
1054 | ||
aea4bd9d AM |
1055 | if (hold_text.os == NULL) |
1056 | hold_text.os = lang_output_section_find (".text"); | |
252b5132 RH |
1057 | |
1058 | /* If this is a final link, then always put .gnu.warning.SYMBOL | |
1059 | sections into the .text section to get them out of the way. */ | |
1060 | if (! link_info.shared | |
1061 | && ! link_info.relocateable | |
1062 | && strncmp (secname, ".gnu.warning.", sizeof ".gnu.warning." - 1) == 0 | |
6a345e87 | 1063 | && hold_text.os != NULL) |
252b5132 | 1064 | { |
6a345e87 | 1065 | wild_doit (&hold_text.os->children, s, hold_text.os, file); |
252b5132 RH |
1066 | return true; |
1067 | } | |
1068 | ||
1069 | /* Decide which segment the section should go in based on the | |
1070 | section name and section flags. We put loadable .note sections | |
1071 | right after the .interp section, so that the PT_NOTE segment is | |
1072 | stored right after the program headers where the OS can read it | |
1073 | in the first page. */ | |
aea4bd9d AM |
1074 | #define HAVE_SECTION(hold, name) \ |
1075 | (hold.os != NULL || (hold.os = lang_output_section_find (name)) != NULL) | |
1076 | ||
252b5132 RH |
1077 | if (s->flags & SEC_EXCLUDE) |
1078 | return false; | |
5ba47421 AM |
1079 | else if ((s->flags & SEC_ALLOC) == 0) |
1080 | place = NULL; | |
252b5132 | 1081 | else if ((s->flags & SEC_LOAD) != 0 |
6a345e87 | 1082 | && strncmp (secname, ".note", 4) == 0 |
aea4bd9d | 1083 | && HAVE_SECTION (hold_interp, ".interp")) |
6a345e87 | 1084 | place = &hold_interp; |
252b5132 | 1085 | else if ((s->flags & SEC_HAS_CONTENTS) == 0 |
aea4bd9d | 1086 | && HAVE_SECTION (hold_bss, ".bss")) |
6a345e87 | 1087 | place = &hold_bss; |
252b5132 | 1088 | else if ((s->flags & SEC_READONLY) == 0 |
aea4bd9d | 1089 | && HAVE_SECTION (hold_data, ".data")) |
6a345e87 | 1090 | place = &hold_data; |
252b5132 | 1091 | else if (strncmp (secname, ".rel", 4) == 0 |
aea4bd9d AM |
1092 | && (hold_rel.os != NULL |
1093 | || (hold_rel.os = output_rel_find ()) != NULL)) | |
6a345e87 | 1094 | place = &hold_rel; |
252b5132 RH |
1095 | else if ((s->flags & SEC_CODE) == 0 |
1096 | && (s->flags & SEC_READONLY) != 0 | |
aea4bd9d | 1097 | && HAVE_SECTION (hold_rodata, ".rodata")) |
6a345e87 | 1098 | place = &hold_rodata; |
252b5132 | 1099 | else if ((s->flags & SEC_READONLY) != 0 |
6a345e87 AM |
1100 | && hold_text.os != NULL) |
1101 | place = &hold_text; | |
1102 | else | |
01cc8ff8 | 1103 | place = NULL; |
252b5132 | 1104 | |
aea4bd9d AM |
1105 | #undef HAVE_SECTION |
1106 | ||
252b5132 RH |
1107 | /* Choose a unique name for the section. This will be needed if the |
1108 | same section name appears in the input file with different | |
1109 | loadable or allocateable characteristics. */ | |
1110 | outsecname = secname; | |
1111 | if (bfd_get_section_by_name (output_bfd, outsecname) != NULL) | |
1112 | { | |
1113 | unsigned int len; | |
1114 | char *newname; | |
1115 | unsigned int i; | |
1116 | ||
1117 | len = strlen (outsecname); | |
1118 | newname = xmalloc (len + 5); | |
1119 | strcpy (newname, outsecname); | |
1120 | i = 0; | |
1121 | do | |
1122 | { | |
1123 | sprintf (newname + len, "%d", i); | |
1124 | ++i; | |
1125 | } | |
1126 | while (bfd_get_section_by_name (output_bfd, newname) != NULL); | |
1127 | ||
1128 | outsecname = newname; | |
1129 | } | |
1130 | ||
5ba47421 | 1131 | if (place != NULL) |
252b5132 | 1132 | { |
5ba47421 AM |
1133 | /* Start building a list of statements for this section. */ |
1134 | old = stat_ptr; | |
1135 | stat_ptr = &add; | |
1136 | lang_list_init (stat_ptr); | |
1137 | ||
1138 | /* If the name of the section is representable in C, then create | |
1139 | symbols to mark the start and the end of the section. */ | |
1140 | for (ps = outsecname; *ps != '\0'; ps++) | |
1141 | if (! isalnum ((unsigned char) *ps) && *ps != '_') | |
1142 | break; | |
1143 | if (*ps == '\0' && config.build_constructors) | |
1144 | { | |
1145 | char *symname; | |
1146 | etree_type *e_align; | |
1147 | ||
1148 | symname = (char *) xmalloc (ps - outsecname + sizeof "__start_"); | |
1149 | sprintf (symname, "__start_%s", outsecname); | |
1150 | e_align = exp_unop (ALIGN_K, | |
1151 | exp_intop ((bfd_vma) 1 << s->alignment_power)); | |
1152 | lang_add_assignment (exp_assop ('=', symname, e_align)); | |
1153 | } | |
252b5132 RH |
1154 | } |
1155 | ||
01cc8ff8 | 1156 | if (link_info.relocateable || (s->flags & (SEC_LOAD | SEC_ALLOC)) == 0) |
252b5132 | 1157 | address = exp_intop ((bfd_vma) 0); |
01cc8ff8 AM |
1158 | else |
1159 | address = NULL; | |
252b5132 | 1160 | |
aea4bd9d AM |
1161 | os = lang_enter_output_section_statement (outsecname, address, 0, |
1162 | (bfd_vma) 0, | |
1163 | (etree_type *) NULL, | |
1164 | (etree_type *) NULL, | |
1165 | (etree_type *) NULL); | |
252b5132 | 1166 | |
252b5132 RH |
1167 | wild_doit (&os->children, s, os, file); |
1168 | ||
20d04697 L |
1169 | lang_leave_output_section_statement |
1170 | ((bfd_vma) 0, "*default*", | |
1171 | (struct lang_output_section_phdr_list *) NULL, "*default*"); | |
1172 | ||
5ba47421 | 1173 | if (place != NULL) |
252b5132 | 1174 | { |
5ba47421 | 1175 | asection *snew, **pps; |
252b5132 | 1176 | |
5ba47421 | 1177 | stat_ptr = &add; |
252b5132 | 1178 | |
5ba47421 AM |
1179 | if (*ps == '\0' && config.build_constructors) |
1180 | { | |
1181 | char *symname; | |
1182 | ||
1183 | symname = (char *) xmalloc (ps - outsecname + sizeof "__stop_"); | |
1184 | sprintf (symname, "__stop_%s", outsecname); | |
1185 | lang_add_assignment (exp_assop ('=', symname, | |
1186 | exp_nameop (NAME, "."))); | |
1187 | } | |
1188 | stat_ptr = old; | |
1189 | ||
1190 | snew = os->bfd_section; | |
1191 | if (place->os->bfd_section != NULL || place->section != NULL) | |
1192 | { | |
1193 | /* Shuffle the section to make the output file look neater. */ | |
1194 | if (place->section == NULL) | |
1195 | { | |
1196 | #if 0 | |
1197 | /* Finding the end of the list is a little tricky. We | |
1198 | make a wild stab at it by comparing section flags. */ | |
1199 | flagword first_flags = place->os->bfd_section->flags; | |
1200 | for (pps = &place->os->bfd_section->next; | |
1201 | *pps != NULL && (*pps)->flags == first_flags; | |
1202 | pps = &(*pps)->next) | |
1203 | ; | |
1204 | place->section = pps; | |
1205 | #else | |
1206 | /* Put orphans after the first section on the list. */ | |
1207 | place->section = &place->os->bfd_section->next; | |
1208 | #endif | |
1209 | } | |
1210 | ||
1211 | /* Unlink the section. */ | |
1212 | for (pps = &output_bfd->sections; *pps != snew; pps = &(*pps)->next) | |
1213 | ; | |
1214 | *pps = snew->next; | |
1215 | ||
1216 | /* Now tack it on to the "place->os" section list. */ | |
1217 | snew->next = *place->section; | |
1218 | *place->section = snew; | |
1219 | } | |
1220 | place->section = &snew->next; /* Save the end of this list. */ | |
1221 | ||
1222 | if (place->stmt == NULL) | |
01cc8ff8 AM |
1223 | { |
1224 | /* Put the new statement list right at the head. */ | |
1225 | *add.tail = place->os->header.next; | |
1226 | place->os->header.next = add.head; | |
1227 | } | |
1228 | else | |
1229 | { | |
1230 | /* Put it after the last orphan statement we added. */ | |
1231 | *add.tail = *place->stmt; | |
1232 | *place->stmt = add.head; | |
1233 | } | |
5ba47421 | 1234 | place->stmt = add.tail; /* Save the end of this list. */ |
6a345e87 | 1235 | } |
252b5132 RH |
1236 | |
1237 | return true; | |
1238 | } | |
1239 | ||
41392f03 AM |
1240 | EOF |
1241 | fi | |
1242 | ||
1243 | if test x"$LDEMUL_GET_SCRIPT" != xgld"$EMULATION_NAME"_get_script; then | |
1244 | cat >>e${EMULATION_NAME}.c <<EOF | |
252b5132 RH |
1245 | |
1246 | static char * | |
41392f03 | 1247 | gld${EMULATION_NAME}_get_script (isfile) |
252b5132 RH |
1248 | int *isfile; |
1249 | EOF | |
1250 | ||
1251 | if test -n "$COMPILE_IN" | |
1252 | then | |
1253 | # Scripts compiled in. | |
1254 | ||
1255 | # sed commands to quote an ld script as a C string. | |
597e2591 | 1256 | sc="-f stringify.sed" |
252b5132 RH |
1257 | |
1258 | cat >>e${EMULATION_NAME}.c <<EOF | |
60bcf0fa | 1259 | { |
252b5132 RH |
1260 | *isfile = 0; |
1261 | ||
1262 | if (link_info.relocateable == true && config.build_constructors == true) | |
597e2591 | 1263 | return |
252b5132 | 1264 | EOF |
597e2591 ILT |
1265 | sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c |
1266 | echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c | |
1267 | sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c | |
1268 | echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c | |
1269 | sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c | |
1270 | echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c | |
1271 | sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c | |
252b5132 RH |
1272 | |
1273 | if test -n "$GENERATE_SHLIB_SCRIPT" ; then | |
597e2591 ILT |
1274 | echo ' ; else if (link_info.shared) return' >> e${EMULATION_NAME}.c |
1275 | sed $sc ldscripts/${EMULATION_NAME}.xs >> e${EMULATION_NAME}.c | |
252b5132 RH |
1276 | fi |
1277 | ||
597e2591 ILT |
1278 | echo ' ; else return' >> e${EMULATION_NAME}.c |
1279 | sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c | |
1280 | echo '; }' >> e${EMULATION_NAME}.c | |
252b5132 RH |
1281 | |
1282 | else | |
1283 | # Scripts read from the filesystem. | |
1284 | ||
1285 | cat >>e${EMULATION_NAME}.c <<EOF | |
60bcf0fa | 1286 | { |
252b5132 RH |
1287 | *isfile = 1; |
1288 | ||
1289 | if (link_info.relocateable == true && config.build_constructors == true) | |
1290 | return "ldscripts/${EMULATION_NAME}.xu"; | |
1291 | else if (link_info.relocateable == true) | |
1292 | return "ldscripts/${EMULATION_NAME}.xr"; | |
1293 | else if (!config.text_read_only) | |
1294 | return "ldscripts/${EMULATION_NAME}.xbn"; | |
1295 | else if (!config.magic_demand_paged) | |
1296 | return "ldscripts/${EMULATION_NAME}.xn"; | |
1297 | else if (link_info.shared) | |
1298 | return "ldscripts/${EMULATION_NAME}.xs"; | |
1299 | else | |
1300 | return "ldscripts/${EMULATION_NAME}.x"; | |
1301 | } | |
252b5132 | 1302 | |
3b108066 | 1303 | EOF |
41392f03 AM |
1304 | fi |
1305 | fi | |
3b108066 | 1306 | |
41392f03 | 1307 | if test -n "$PARSE_AND_LIST_ARGS_CASES" -o x"$GENERATE_SHLIB_SCRIPT" = xyes; then |
3b108066 | 1308 | |
4b209b22 | 1309 | if test x"$LDEMUL_PARSE_ARGS" != xgld"$EMULATION_NAME"_parse_args; then |
3b108066 | 1310 | |
e0ee487b L |
1311 | if test -n "$PARSE_AND_LIST_PROLOGUE" ; then |
1312 | cat >>e${EMULATION_NAME}.c <<EOF | |
1313 | $PARSE_AND_LIST_PROLOGUE | |
1314 | EOF | |
1315 | fi | |
1316 | ||
e0ee487b L |
1317 | cat >>e${EMULATION_NAME}.c <<EOF |
1318 | ||
1319 | #include "getopt.h" | |
1320 | ||
6c1439be L |
1321 | #define OPTION_DISABLE_NEW_DTAGS (400) |
1322 | #define OPTION_ENABLE_NEW_DTAGS (OPTION_DISABLE_NEW_DTAGS + 1) | |
1323 | ||
e0ee487b L |
1324 | static struct option longopts[] = |
1325 | { | |
1326 | EOF | |
e0ee487b L |
1327 | |
1328 | if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then | |
1329 | cat >>e${EMULATION_NAME}.c <<EOF | |
699845ef L |
1330 | /* getopt allows abbreviations, so we do this to stop it from |
1331 | treating -d/-e as abbreviations for these options. */ | |
6c1439be | 1332 | {"disable-new-dtags", no_argument, NULL, OPTION_DISABLE_NEW_DTAGS}, |
699845ef L |
1333 | {"disable-new-dtags", no_argument, NULL, OPTION_DISABLE_NEW_DTAGS}, |
1334 | {"enable-new-dtags", no_argument, NULL, OPTION_ENABLE_NEW_DTAGS}, | |
6c1439be | 1335 | {"enable-new-dtags", no_argument, NULL, OPTION_ENABLE_NEW_DTAGS}, |
e0ee487b L |
1336 | EOF |
1337 | fi | |
1338 | ||
1339 | if test -n "$PARSE_AND_LIST_LONGOPTS" ; then | |
1340 | cat >>e${EMULATION_NAME}.c <<EOF | |
1341 | $PARSE_AND_LIST_LONGOPTS | |
1342 | EOF | |
1343 | fi | |
1344 | ||
e0ee487b L |
1345 | cat >>e${EMULATION_NAME}.c <<EOF |
1346 | {NULL, no_argument, NULL, 0} | |
1347 | }; | |
1348 | ||
04925e1e | 1349 | |
4b209b22 | 1350 | static int gld${EMULATION_NAME}_parse_args PARAMS ((int, char **)); |
41392f03 | 1351 | |
e0ee487b | 1352 | static int |
4b209b22 | 1353 | gld${EMULATION_NAME}_parse_args (argc, argv) |
e0ee487b L |
1354 | int argc; |
1355 | char ** argv; | |
1356 | { | |
4b209b22 AM |
1357 | int longind; |
1358 | int optc; | |
1359 | static int prevoptind = -1; | |
e0ee487b L |
1360 | int prevopterr = opterr; |
1361 | int wanterror; | |
e0ee487b | 1362 | |
4b209b22 | 1363 | if (prevoptind != optind) |
e0ee487b L |
1364 | opterr = 0; |
1365 | ||
4b209b22 AM |
1366 | wanterror = opterr; |
1367 | prevoptind = optind; | |
1368 | ||
41392f03 AM |
1369 | optc = getopt_long_only (argc, argv, |
1370 | "-${PARSE_AND_LIST_SHORTOPTS}z:", longopts, | |
1371 | &longind); | |
e0ee487b L |
1372 | opterr = prevopterr; |
1373 | ||
1374 | switch (optc) | |
1375 | { | |
1376 | default: | |
1377 | if (wanterror) | |
1378 | xexit (1); | |
4b209b22 | 1379 | optind = prevoptind; |
e0ee487b | 1380 | return 0; |
6c1439be | 1381 | |
e0ee487b | 1382 | EOF |
e0ee487b L |
1383 | |
1384 | if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then | |
1385 | cat >>e${EMULATION_NAME}.c <<EOF | |
6c1439be L |
1386 | case OPTION_DISABLE_NEW_DTAGS: |
1387 | link_info.new_dtags = false; | |
1388 | break; | |
1389 | ||
1390 | case OPTION_ENABLE_NEW_DTAGS: | |
1391 | link_info.new_dtags = true; | |
1392 | break; | |
1393 | ||
e0ee487b L |
1394 | case 'z': |
1395 | if (strcmp (optarg, "initfirst") == 0) | |
1396 | link_info.flags_1 |= (bfd_vma) DF_1_INITFIRST; | |
1397 | else if (strcmp (optarg, "interpose") == 0) | |
1398 | link_info.flags_1 |= (bfd_vma) DF_1_INTERPOSE; | |
1399 | else if (strcmp (optarg, "loadfltr") == 0) | |
1400 | link_info.flags_1 |= (bfd_vma) DF_1_LOADFLTR; | |
1401 | else if (strcmp (optarg, "nodefaultlib") == 0) | |
1402 | link_info.flags_1 |= (bfd_vma) DF_1_NODEFLIB; | |
1403 | else if (strcmp (optarg, "nodelete") == 0) | |
1404 | link_info.flags_1 |= (bfd_vma) DF_1_NODELETE; | |
1405 | else if (strcmp (optarg, "nodlopen") == 0) | |
1406 | link_info.flags_1 |= (bfd_vma) DF_1_NOOPEN; | |
1407 | else if (strcmp (optarg, "nodump") == 0) | |
1408 | link_info.flags_1 |= (bfd_vma) DF_1_NODUMP; | |
1409 | else if (strcmp (optarg, "now") == 0) | |
1410 | { | |
1411 | link_info.flags |= (bfd_vma) DF_BIND_NOW; | |
1412 | link_info.flags_1 |= (bfd_vma) DF_1_NOW; | |
1413 | } | |
1414 | else if (strcmp (optarg, "origin") == 0) | |
1415 | { | |
1416 | link_info.flags |= (bfd_vma) DF_ORIGIN; | |
1417 | link_info.flags_1 |= (bfd_vma) DF_1_ORIGIN; | |
1418 | } | |
1419 | /* What about the other Solaris -z options? FIXME. */ | |
6c1439be | 1420 | break; |
e0ee487b L |
1421 | EOF |
1422 | fi | |
1423 | ||
1424 | if test -n "$PARSE_AND_LIST_ARGS_CASES" ; then | |
1425 | cat >>e${EMULATION_NAME}.c <<EOF | |
1426 | $PARSE_AND_LIST_ARGS_CASES | |
1427 | EOF | |
1428 | fi | |
1429 | ||
e0ee487b L |
1430 | cat >>e${EMULATION_NAME}.c <<EOF |
1431 | } | |
1432 | ||
1433 | return 1; | |
1434 | } | |
1435 | ||
41392f03 AM |
1436 | EOF |
1437 | fi | |
1438 | ||
4b209b22 | 1439 | if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then |
41392f03 AM |
1440 | cat >>e${EMULATION_NAME}.c <<EOF |
1441 | ||
4b209b22 | 1442 | static void gld${EMULATION_NAME}_list_options PARAMS ((FILE * file)); |
04925e1e | 1443 | |
e0ee487b | 1444 | static void |
4b209b22 | 1445 | gld${EMULATION_NAME}_list_options (file) |
e0ee487b L |
1446 | FILE * file; |
1447 | { | |
1448 | EOF | |
e0ee487b L |
1449 | |
1450 | if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then | |
1451 | cat >>e${EMULATION_NAME}.c <<EOF | |
6c1439be L |
1452 | fprintf (file, _(" --disable-new-dtags\tDisable new dynamic tags\n")); |
1453 | fprintf (file, _(" --enable-new-dtags\tEnable new dynamic tags\n")); | |
e0ee487b L |
1454 | fprintf (file, _(" -z initfirst\t\tMark DSO to be initialized first at rutime\n")); |
1455 | fprintf (file, _(" -z interpose\t\tMark object to interpose all DSOs but execuable\n")); | |
1456 | fprintf (file, _(" -z loadfltr\t\tMark object requiring immediate process\n")); | |
1457 | fprintf (file, _(" -z nodefaultlib\tMark object not to use default search paths\n")); | |
1458 | fprintf (file, _(" -z nodelete\t\tMark DSO non-deletable at runtime\n")); | |
1459 | fprintf (file, _(" -z nodlopen\t\tMark DSO not availale to dlopen\n")); | |
1460 | fprintf (file, _(" -z nodump\t\tMark DSO not availale to dldump\n")); | |
1461 | fprintf (file, _(" -z now\t\tMark object non-lazy runtime binding\n")); | |
1462 | fprintf (file, _(" -z origin\t\tMark object requiring immediate \$ORIGIN processing\n")); | |
1463 | fprintf (file, _("\t\t\t at runtime\n")); | |
19e3be22 | 1464 | fprintf (file, _(" -z KEYWORD\t\tIgnored for Solaris compatibility\n")); |
e0ee487b L |
1465 | EOF |
1466 | fi | |
1467 | ||
1468 | if test -n "$PARSE_AND_LIST_OPTIONS" ; then | |
1469 | cat >>e${EMULATION_NAME}.c <<EOF | |
1470 | $PARSE_AND_LIST_OPTIONS | |
1471 | EOF | |
1472 | fi | |
1473 | ||
e0ee487b L |
1474 | cat >>e${EMULATION_NAME}.c <<EOF |
1475 | } | |
1476 | EOF | |
e0ee487b L |
1477 | |
1478 | if test -n "$PARSE_AND_LIST_EPILOGUE" ; then | |
1479 | cat >>e${EMULATION_NAME}.c <<EOF | |
1480 | $PARSE_AND_LIST_EPILOGUE | |
1481 | EOF | |
1482 | fi | |
41392f03 AM |
1483 | fi |
1484 | else | |
4b209b22 | 1485 | if test x"$LDEMUL_PARSE_ARGS" != xgld"$EMULATION_NAME"_parse_args; then |
41392f03 | 1486 | cat >>e${EMULATION_NAME}.c <<EOF |
4b209b22 | 1487 | #define gld${EMULATION_NAME}_parse_args NULL |
41392f03 AM |
1488 | EOF |
1489 | fi | |
4b209b22 | 1490 | if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then |
41392f03 | 1491 | cat >>e${EMULATION_NAME}.c <<EOF |
4b209b22 | 1492 | #define gld${EMULATION_NAME}_list_options NULL |
41392f03 AM |
1493 | EOF |
1494 | fi | |
1495 | fi | |
e0ee487b | 1496 | |
252b5132 RH |
1497 | cat >>e${EMULATION_NAME}.c <<EOF |
1498 | ||
60bcf0fa | 1499 | struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = |
252b5132 | 1500 | { |
41392f03 AM |
1501 | ${LDEMUL_BEFORE_PARSE-gld${EMULATION_NAME}_before_parse}, |
1502 | ${LDEMUL_SYSLIB-syslib_default}, | |
1503 | ${LDEMUL_HLL-hll_default}, | |
1504 | ${LDEMUL_AFTER_PARSE-after_parse_default}, | |
1505 | ${LDEMUL_AFTER_OPEN-gld${EMULATION_NAME}_after_open}, | |
1506 | ${LDEMUL_AFTER_ALLOCATION-after_allocation_default}, | |
1507 | ${LDEMUL_SET_OUTPUT_ARCH-set_output_arch_default}, | |
1508 | ${LDEMUL_CHOOSE_TARGET-ldemul_default_target}, | |
1509 | ${LDEMUL_BEFORE_ALLOCATION-gld${EMULATION_NAME}_before_allocation}, | |
1510 | ${LDEMUL_GET_SCRIPT-gld${EMULATION_NAME}_get_script}, | |
252b5132 RH |
1511 | "${EMULATION_NAME}", |
1512 | "${OUTPUT_FORMAT}", | |
41392f03 AM |
1513 | ${LDEMUL_FINISH-NULL}, |
1514 | ${LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS-NULL}, | |
1515 | ${LDEMUL_OPEN_DYNAMIC_ARCHIVE-gld${EMULATION_NAME}_open_dynamic_archive}, | |
1516 | ${LDEMUL_PLACE_ORPHAN-gld${EMULATION_NAME}_place_orphan}, | |
1517 | ${LDEMUL_SET_SYMBOLS-NULL}, | |
4b209b22 | 1518 | ${LDEMUL_PARSE_ARGS-gld${EMULATION_NAME}_parse_args}, |
41392f03 | 1519 | ${LDEMUL_UNRECOGNIZED_FILE-NULL}, |
4b209b22 | 1520 | ${LDEMUL_LIST_OPTIONS-gld${EMULATION_NAME}_list_options}, |
41392f03 AM |
1521 | ${LDEMUL_RECOGNIZED_FILE-NULL}, |
1522 | ${LDEMUL_FIND_POTENTIAL_LIBRARIES-NULL}, | |
252b5132 RH |
1523 | }; |
1524 | EOF |