* Makefile.am (eelf32iq10.c): Fix tab/whitespace mixup.
[deliverable/binutils-gdb.git] / ld / emultempl / elf32.em
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 "${ELFSIZE}" && ELFSIZE=32
6 if [ -z "$MACHINE" ]; then
7 OUTPUT_ARCH=${ARCH}
8 else
9 OUTPUT_ARCH=${ARCH}:${MACHINE}
10 fi
11 cat >e${EMULATION_NAME}.c <<EOF
12 /* This file is is generated by a shell script. DO NOT EDIT! */
13
14 /* ${ELFSIZE} bit ELF emulation code for ${EMULATION_NAME}
15 Copyright 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
16 2002, 2003 Free Software Foundation, Inc.
17 Written by Steve Chamberlain <sac@cygnus.com>
18 ELF support by Ian Lance Taylor <ian@cygnus.com>
19
20 This file is part of GLD, the Gnu Linker.
21
22 This program is free software; you can redistribute it and/or modify
23 it under the terms of the GNU General Public License as published by
24 the Free Software Foundation; either version 2 of the License, or
25 (at your option) any later version.
26
27 This program is distributed in the hope that it will be useful,
28 but WITHOUT ANY WARRANTY; without even the implied warranty of
29 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30 GNU General Public License for more details.
31
32 You should have received a copy of the GNU General Public License
33 along with this program; if not, write to the Free Software
34 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
35
36 #define TARGET_IS_${EMULATION_NAME}
37
38 #include "bfd.h"
39 #include "sysdep.h"
40 #include "libiberty.h"
41 #include "safe-ctype.h"
42
43 #include "bfdlink.h"
44
45 #include "ld.h"
46 #include "ldmain.h"
47 #include "ldmisc.h"
48 #include "ldexp.h"
49 #include "ldlang.h"
50 #include "ldfile.h"
51 #include "ldemul.h"
52 #include <ldgram.h>
53 #include "elf/common.h"
54
55 static void gld${EMULATION_NAME}_before_parse
56 PARAMS ((void));
57 static void gld${EMULATION_NAME}_vercheck
58 PARAMS ((lang_input_statement_type *));
59 static void gld${EMULATION_NAME}_stat_needed
60 PARAMS ((lang_input_statement_type *));
61 static bfd_boolean gld${EMULATION_NAME}_try_needed
62 PARAMS ((const char *, int));
63 static bfd_boolean gld${EMULATION_NAME}_search_needed
64 PARAMS ((const char *, const char *, int));
65 static void gld${EMULATION_NAME}_check_needed
66 PARAMS ((lang_input_statement_type *));
67 static void gld${EMULATION_NAME}_after_open
68 PARAMS ((void));
69 static void gld${EMULATION_NAME}_find_exp_assignment
70 PARAMS ((etree_type *));
71 static void gld${EMULATION_NAME}_find_statement_assignment
72 PARAMS ((lang_statement_union_type *));
73 static void gld${EMULATION_NAME}_before_allocation
74 PARAMS ((void));
75 static bfd_boolean gld${EMULATION_NAME}_open_dynamic_archive
76 PARAMS ((const char *, search_dirs_type *, lang_input_statement_type *));
77 static lang_output_section_statement_type *output_rel_find
78 PARAMS ((asection *));
79 static asection *output_prev_sec_find
80 PARAMS ((lang_output_section_statement_type *));
81 static bfd_boolean gld${EMULATION_NAME}_place_orphan
82 PARAMS ((lang_input_statement_type *, asection *));
83 static void gld${EMULATION_NAME}_finish
84 PARAMS ((void));
85 static char *gld${EMULATION_NAME}_get_script
86 PARAMS ((int *isfile));
87
88 EOF
89
90 # Import any needed special functions and/or overrides.
91 #
92 if test -n "$EXTRA_EM_FILE" ; then
93 . ${srcdir}/emultempl/${EXTRA_EM_FILE}.em
94 fi
95
96 # Functions in this file can be overridden by setting the LDEMUL_* shell
97 # variables. If the name of the overriding function is the same as is
98 # defined in this file, then don't output this file's version.
99 # If a different overriding name is given then output the standard function
100 # as presumably it is called from the overriding function.
101 #
102 if test x"$LDEMUL_BEFORE_PARSE" != xgld"$EMULATION_NAME"_before_parse; then
103 cat >>e${EMULATION_NAME}.c <<EOF
104
105 static void
106 gld${EMULATION_NAME}_before_parse ()
107 {
108 const bfd_arch_info_type *arch = bfd_scan_arch ("${OUTPUT_ARCH}");
109 if (arch)
110 {
111 ldfile_output_architecture = arch->arch;
112 ldfile_output_machine = arch->mach;
113 ldfile_output_machine_name = arch->printable_name;
114 }
115 else
116 ldfile_output_architecture = bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`;
117 config.dynamic_link = ${DYNAMIC_LINK-TRUE};
118 config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo TRUE ; else echo FALSE ; fi`;
119 }
120
121 EOF
122 fi
123
124 cat >>e${EMULATION_NAME}.c <<EOF
125
126 /* These variables are required to pass information back and forth
127 between after_open and check_needed and stat_needed and vercheck. */
128
129 static struct bfd_link_needed_list *global_needed;
130 static struct stat global_stat;
131 static bfd_boolean global_found;
132 static struct bfd_link_needed_list *global_vercheck_needed;
133 static bfd_boolean global_vercheck_failed;
134
135
136 /* On Linux, it's possible to have different versions of the same
137 shared library linked against different versions of libc. The
138 dynamic linker somehow tags which libc version to use in
139 /etc/ld.so.cache, and, based on the libc that it sees in the
140 executable, chooses which version of the shared library to use.
141
142 We try to do a similar check here by checking whether this shared
143 library needs any other shared libraries which may conflict with
144 libraries we have already included in the link. If it does, we
145 skip it, and try to find another shared library farther on down the
146 link path.
147
148 This is called via lang_for_each_input_file.
149 GLOBAL_VERCHECK_NEEDED is the list of objects needed by the object
150 which we are checking. This sets GLOBAL_VERCHECK_FAILED if we find
151 a conflicting version. */
152
153 static void
154 gld${EMULATION_NAME}_vercheck (s)
155 lang_input_statement_type *s;
156 {
157 const char *soname;
158 struct bfd_link_needed_list *l;
159
160 if (global_vercheck_failed)
161 return;
162 if (s->the_bfd == NULL
163 || (bfd_get_file_flags (s->the_bfd) & DYNAMIC) == 0)
164 return;
165
166 soname = bfd_elf_get_dt_soname (s->the_bfd);
167 if (soname == NULL)
168 soname = lbasename (bfd_get_filename (s->the_bfd));
169
170 for (l = global_vercheck_needed; l != NULL; l = l->next)
171 {
172 const char *suffix;
173
174 if (strcmp (soname, l->name) == 0)
175 {
176 /* Probably can't happen, but it's an easy check. */
177 continue;
178 }
179
180 if (strchr (l->name, '/') != NULL)
181 continue;
182
183 suffix = strstr (l->name, ".so.");
184 if (suffix == NULL)
185 continue;
186
187 suffix += sizeof ".so." - 1;
188
189 if (strncmp (soname, l->name, suffix - l->name) == 0)
190 {
191 /* Here we know that S is a dynamic object FOO.SO.VER1, and
192 the object we are considering needs a dynamic object
193 FOO.SO.VER2, and VER1 and VER2 are different. This
194 appears to be a version mismatch, so we tell the caller
195 to try a different version of this library. */
196 global_vercheck_failed = TRUE;
197 return;
198 }
199 }
200 }
201
202
203 /* See if an input file matches a DT_NEEDED entry by running stat on
204 the file. */
205
206 static void
207 gld${EMULATION_NAME}_stat_needed (s)
208 lang_input_statement_type *s;
209 {
210 struct stat st;
211 const char *suffix;
212 const char *soname;
213
214 if (global_found)
215 return;
216 if (s->the_bfd == NULL)
217 return;
218
219 if (bfd_stat (s->the_bfd, &st) != 0)
220 {
221 einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd);
222 return;
223 }
224
225 if (st.st_dev == global_stat.st_dev
226 && st.st_ino == global_stat.st_ino)
227 {
228 global_found = TRUE;
229 return;
230 }
231
232 /* We issue a warning if it looks like we are including two
233 different versions of the same shared library. For example,
234 there may be a problem if -lc picks up libc.so.6 but some other
235 shared library has a DT_NEEDED entry of libc.so.5. This is a
236 heuristic test, and it will only work if the name looks like
237 NAME.so.VERSION. FIXME: Depending on file names is error-prone.
238 If we really want to issue warnings about mixing version numbers
239 of shared libraries, we need to find a better way. */
240
241 if (strchr (global_needed->name, '/') != NULL)
242 return;
243 suffix = strstr (global_needed->name, ".so.");
244 if (suffix == NULL)
245 return;
246 suffix += sizeof ".so." - 1;
247
248 soname = bfd_elf_get_dt_soname (s->the_bfd);
249 if (soname == NULL)
250 soname = lbasename (s->filename);
251
252 if (strncmp (soname, global_needed->name, suffix - global_needed->name) == 0)
253 einfo ("%P: warning: %s, needed by %B, may conflict with %s\n",
254 global_needed->name, global_needed->by, soname);
255 }
256
257
258 /* This function is called for each possible name for a dynamic object
259 named by a DT_NEEDED entry. The FORCE parameter indicates whether
260 to skip the check for a conflicting version. */
261
262 static bfd_boolean
263 gld${EMULATION_NAME}_try_needed (name, force)
264 const char *name;
265 int force;
266 {
267 bfd *abfd;
268 const char *soname;
269
270 abfd = bfd_openr (name, bfd_get_target (output_bfd));
271 if (abfd == NULL)
272 return FALSE;
273 if (! bfd_check_format (abfd, bfd_object))
274 {
275 bfd_close (abfd);
276 return FALSE;
277 }
278 if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0)
279 {
280 bfd_close (abfd);
281 return FALSE;
282 }
283
284 /* For DT_NEEDED, they have to match. */
285 if (abfd->xvec != output_bfd->xvec)
286 {
287 bfd_close (abfd);
288 return FALSE;
289 }
290
291 /* Check whether this object would include any conflicting library
292 versions. If FORCE is set, then we skip this check; we use this
293 the second time around, if we couldn't find any compatible
294 instance of the shared library. */
295
296 if (! force)
297 {
298 struct bfd_link_needed_list *needed;
299
300 if (! bfd_elf_get_bfd_needed_list (abfd, &needed))
301 einfo ("%F%P:%B: bfd_elf_get_bfd_needed_list failed: %E\n", abfd);
302
303 if (needed != NULL)
304 {
305 global_vercheck_needed = needed;
306 global_vercheck_failed = FALSE;
307 lang_for_each_input_file (gld${EMULATION_NAME}_vercheck);
308 if (global_vercheck_failed)
309 {
310 bfd_close (abfd);
311 /* Return FALSE to force the caller to move on to try
312 another file on the search path. */
313 return FALSE;
314 }
315
316 /* But wait! It gets much worse. On Linux, if a shared
317 library does not use libc at all, we are supposed to skip
318 it the first time around in case we encounter a shared
319 library later on with the same name which does use the
320 version of libc that we want. This is much too horrible
321 to use on any system other than Linux. */
322
323 EOF
324 case ${target} in
325 *-*-linux-gnu*)
326 cat >>e${EMULATION_NAME}.c <<EOF
327 {
328 struct bfd_link_needed_list *l;
329
330 for (l = needed; l != NULL; l = l->next)
331 if (strncmp (l->name, "libc.so", 7) == 0)
332 break;
333 if (l == NULL)
334 {
335 bfd_close (abfd);
336 return FALSE;
337 }
338 }
339
340 EOF
341 ;;
342 esac
343 cat >>e${EMULATION_NAME}.c <<EOF
344 }
345 }
346
347 /* We've found a dynamic object matching the DT_NEEDED entry. */
348
349 /* We have already checked that there is no other input file of the
350 same name. We must now check again that we are not including the
351 same file twice. We need to do this because on many systems
352 libc.so is a symlink to, e.g., libc.so.1. The SONAME entry will
353 reference libc.so.1. If we have already included libc.so, we
354 don't want to include libc.so.1 if they are the same file, and we
355 can only check that using stat. */
356
357 if (bfd_stat (abfd, &global_stat) != 0)
358 einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd);
359
360 /* First strip off everything before the last '/'. */
361 soname = lbasename (abfd->filename);
362
363 if (trace_file_tries)
364 info_msg (_("found %s at %s\n"), soname, name);
365
366 global_found = FALSE;
367 lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed);
368 if (global_found)
369 {
370 /* Return TRUE to indicate that we found the file, even though
371 we aren't going to do anything with it. */
372 return TRUE;
373 }
374
375 /* Tell the ELF backend that we don't want the output file to have a
376 DT_NEEDED entry for this file. */
377 bfd_elf_set_dt_needed_name (abfd, "");
378
379 /* Tell the ELF backend that the output file needs a DT_NEEDED
380 entry for this file if it is used to resolve the reference in
381 a regular object. */
382 bfd_elf_set_dt_needed_soname (abfd, soname);
383
384 /* Add this file into the symbol table. */
385 if (! bfd_link_add_symbols (abfd, &link_info))
386 einfo ("%F%B: could not read symbols: %E\n", abfd);
387
388 return TRUE;
389 }
390
391
392 /* Search for a needed file in a path. */
393
394 static bfd_boolean
395 gld${EMULATION_NAME}_search_needed (path, name, force)
396 const char *path;
397 const char *name;
398 int force;
399 {
400 const char *s;
401 size_t len;
402
403 if (name[0] == '/')
404 return gld${EMULATION_NAME}_try_needed (name, force);
405
406 if (path == NULL || *path == '\0')
407 return FALSE;
408 len = strlen (name);
409 while (1)
410 {
411 char *filename, *sset;
412
413 s = strchr (path, ':');
414 if (s == NULL)
415 s = path + strlen (path);
416
417 filename = (char *) xmalloc (s - path + len + 2);
418 if (s == path)
419 sset = filename;
420 else
421 {
422 memcpy (filename, path, s - path);
423 filename[s - path] = '/';
424 sset = filename + (s - path) + 1;
425 }
426 strcpy (sset, name);
427
428 if (gld${EMULATION_NAME}_try_needed (filename, force))
429 return TRUE;
430
431 free (filename);
432
433 if (*s == '\0')
434 break;
435 path = s + 1;
436 }
437
438 return FALSE;
439 }
440
441 EOF
442 if [ "x${USE_LIBPATH}" = xyes ] ; then
443 case ${target} in
444 *-*-linux-gnu*)
445 cat >>e${EMULATION_NAME}.c <<EOF
446
447 /* Add the sysroot to every entry in a colon-separated path. */
448
449 static char *
450 gld${EMULATION_NAME}_add_sysroot (path)
451 const char *path;
452 {
453 int len, colons, i;
454 char *ret, *p;
455
456 len = strlen (path);
457 colons = 0;
458 i = 0;
459 while (path[i])
460 if (path[i++] == ':')
461 colons++;
462
463 if (path[i])
464 colons++;
465
466 len = len + colons * strlen (ld_sysroot);
467 ret = xmalloc (len + 1);
468 strcpy (ret, ld_sysroot);
469 p = ret + strlen (ret);
470 i = 0;
471 while (path[i])
472 if (path[i] == ':')
473 {
474 strcpy (p, ld_sysroot);
475 p = p + strlen (p);
476 i++;
477 }
478 else
479 *p++ = path[i++];
480
481 *p = 0;
482 return ret;
483 }
484
485 /* For a native linker, check the file /etc/ld.so.conf for directories
486 in which we may find shared libraries. /etc/ld.so.conf is really
487 only meaningful on Linux. */
488
489 static bfd_boolean gld${EMULATION_NAME}_check_ld_so_conf
490 PARAMS ((const char *, int));
491
492 static bfd_boolean
493 gld${EMULATION_NAME}_check_ld_so_conf (name, force)
494 const char *name;
495 int force;
496 {
497 static bfd_boolean initialized;
498 static char *ld_so_conf;
499
500 if (! initialized)
501 {
502 FILE *f;
503 char *tmppath;
504
505 tmppath = concat (ld_sysroot, "/etc/ld.so.conf", NULL);
506 f = fopen (tmppath, FOPEN_RT);
507 free (tmppath);
508 if (f != NULL)
509 {
510 char *b;
511 size_t len, alloc;
512 int c;
513
514 len = 0;
515 alloc = 100;
516 b = (char *) xmalloc (alloc);
517
518 while ((c = getc (f)) != EOF)
519 {
520 if (len + 1 >= alloc)
521 {
522 alloc *= 2;
523 b = (char *) xrealloc (b, alloc);
524 }
525 if (c != ':'
526 && c != ' '
527 && c != '\t'
528 && c != '\n'
529 && c != ',')
530 {
531 b[len] = c;
532 ++len;
533 }
534 else
535 {
536 if (len > 0 && b[len - 1] != ':')
537 {
538 b[len] = ':';
539 ++len;
540 }
541 }
542 }
543
544 if (len > 0 && b[len - 1] == ':')
545 --len;
546
547 if (len > 0)
548 b[len] = '\0';
549 else
550 {
551 free (b);
552 b = NULL;
553 }
554
555 fclose (f);
556
557 if (b)
558 {
559 char *d = gld${EMULATION_NAME}_add_sysroot (b);
560 free (b);
561 b = d;
562 }
563
564 ld_so_conf = b;
565 }
566
567 initialized = TRUE;
568 }
569
570 if (ld_so_conf == NULL)
571 return FALSE;
572
573 return gld${EMULATION_NAME}_search_needed (ld_so_conf, name, force);
574 }
575
576 EOF
577 # Linux
578 ;;
579 esac
580 fi
581 cat >>e${EMULATION_NAME}.c <<EOF
582
583 /* See if an input file matches a DT_NEEDED entry by name. */
584
585 static void
586 gld${EMULATION_NAME}_check_needed (s)
587 lang_input_statement_type *s;
588 {
589 if (global_found)
590 return;
591
592 if (s->filename != NULL)
593 {
594 const char *f;
595
596 if (strcmp (s->filename, global_needed->name) == 0)
597 {
598 global_found = TRUE;
599 return;
600 }
601
602 if (s->search_dirs_flag)
603 {
604 f = strrchr (s->filename, '/');
605 if (f != NULL
606 && strcmp (f + 1, global_needed->name) == 0)
607 {
608 global_found = TRUE;
609 return;
610 }
611 }
612 }
613
614 if (s->the_bfd != NULL)
615 {
616 const char *soname;
617
618 soname = bfd_elf_get_dt_soname (s->the_bfd);
619 if (soname != NULL
620 && strcmp (soname, global_needed->name) == 0)
621 {
622 global_found = TRUE;
623 return;
624 }
625 }
626 }
627
628 EOF
629
630 if test x"$LDEMUL_AFTER_OPEN" != xgld"$EMULATION_NAME"_after_open; then
631 cat >>e${EMULATION_NAME}.c <<EOF
632
633 /* This is called after all the input files have been opened. */
634
635 static void
636 gld${EMULATION_NAME}_after_open ()
637 {
638 struct bfd_link_needed_list *needed, *l;
639
640 /* We only need to worry about this when doing a final link. */
641 if (link_info.relocateable || link_info.shared)
642 return;
643
644 /* Get the list of files which appear in DT_NEEDED entries in
645 dynamic objects included in the link (often there will be none).
646 For each such file, we want to track down the corresponding
647 library, and include the symbol table in the link. This is what
648 the runtime dynamic linker will do. Tracking the files down here
649 permits one dynamic object to include another without requiring
650 special action by the person doing the link. Note that the
651 needed list can actually grow while we are stepping through this
652 loop. */
653 needed = bfd_elf_get_needed_list (output_bfd, &link_info);
654 for (l = needed; l != NULL; l = l->next)
655 {
656 struct bfd_link_needed_list *ll;
657 int force;
658
659 /* If we've already seen this file, skip it. */
660 for (ll = needed; ll != l; ll = ll->next)
661 if (strcmp (ll->name, l->name) == 0)
662 break;
663 if (ll != l)
664 continue;
665
666 /* See if this file was included in the link explicitly. */
667 global_needed = l;
668 global_found = FALSE;
669 lang_for_each_input_file (gld${EMULATION_NAME}_check_needed);
670 if (global_found)
671 continue;
672
673 if (trace_file_tries)
674 info_msg (_("%s needed by %B\n"), l->name, l->by);
675
676 /* We need to find this file and include the symbol table. We
677 want to search for the file in the same way that the dynamic
678 linker will search. That means that we want to use
679 rpath_link, rpath, then the environment variable
680 LD_LIBRARY_PATH (native only), then the DT_RPATH/DT_RUNPATH
681 entries (native only), then the linker script LIB_SEARCH_DIRS.
682 We do not search using the -L arguments.
683
684 We search twice. The first time, we skip objects which may
685 introduce version mismatches. The second time, we force
686 their use. See gld${EMULATION_NAME}_vercheck comment. */
687 for (force = 0; force < 2; force++)
688 {
689 size_t len;
690 search_dirs_type *search;
691 EOF
692 if [ "x${USE_LIBPATH}" = xyes ] ; then
693 cat >>e${EMULATION_NAME}.c <<EOF
694 const char *lib_path;
695 struct bfd_link_needed_list *rp;
696 int found;
697 EOF
698 fi
699 cat >>e${EMULATION_NAME}.c <<EOF
700
701 if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link,
702 l->name, force))
703 break;
704 EOF
705 if [ "x${USE_LIBPATH}" = xyes ] ; then
706 cat >>e${EMULATION_NAME}.c <<EOF
707 if (gld${EMULATION_NAME}_search_needed (command_line.rpath,
708 l->name, force))
709 break;
710 EOF
711 fi
712 if [ "x${NATIVE}" = xyes ] ; then
713 cat >>e${EMULATION_NAME}.c <<EOF
714 if (command_line.rpath_link == NULL
715 && command_line.rpath == NULL)
716 {
717 lib_path = (const char *) getenv ("LD_RUN_PATH");
718 if (gld${EMULATION_NAME}_search_needed (lib_path, l->name,
719 force))
720 break;
721 }
722 lib_path = (const char *) getenv ("LD_LIBRARY_PATH");
723 if (gld${EMULATION_NAME}_search_needed (lib_path, l->name, force))
724 break;
725 EOF
726 fi
727 if [ "x${USE_LIBPATH}" = xyes ] ; then
728 cat >>e${EMULATION_NAME}.c <<EOF
729 found = 0;
730 rp = bfd_elf_get_runpath_list (output_bfd, &link_info);
731 for (; !found && rp != NULL; rp = rp->next)
732 {
733 char *tmpname = gld${EMULATION_NAME}_add_sysroot (rp->name);
734 found = (rp->by == l->by
735 && gld${EMULATION_NAME}_search_needed (tmpname,
736 l->name,
737 force));
738 free (tmpname);
739 }
740 if (found)
741 break;
742
743 EOF
744 fi
745 cat >>e${EMULATION_NAME}.c <<EOF
746 len = strlen (l->name);
747 for (search = search_head; search != NULL; search = search->next)
748 {
749 char *filename;
750
751 if (search->cmdline)
752 continue;
753 filename = (char *) xmalloc (strlen (search->name) + len + 2);
754 sprintf (filename, "%s/%s", search->name, l->name);
755 if (gld${EMULATION_NAME}_try_needed (filename, force))
756 break;
757 free (filename);
758 }
759 if (search != NULL)
760 break;
761 EOF
762 if [ "x${USE_LIBPATH}" = xyes ] ; then
763 case ${target} in
764 *-*-linux-gnu*)
765 cat >>e${EMULATION_NAME}.c <<EOF
766 if (gld${EMULATION_NAME}_check_ld_so_conf (l->name, force))
767 break;
768 EOF
769 # Linux
770 ;;
771 esac
772 fi
773 cat >>e${EMULATION_NAME}.c <<EOF
774 }
775
776 if (force < 2)
777 continue;
778
779 einfo ("%P: warning: %s, needed by %B, not found (try using -rpath or -rpath-link)\n",
780 l->name, l->by);
781 }
782 }
783
784 EOF
785 fi
786
787 cat >>e${EMULATION_NAME}.c <<EOF
788
789 /* Look through an expression for an assignment statement. */
790
791 static void
792 gld${EMULATION_NAME}_find_exp_assignment (exp)
793 etree_type *exp;
794 {
795 struct bfd_link_hash_entry *h;
796
797 switch (exp->type.node_class)
798 {
799 case etree_provide:
800 h = bfd_link_hash_lookup (link_info.hash, exp->assign.dst,
801 FALSE, FALSE, FALSE);
802 if (h == NULL)
803 break;
804
805 /* We call record_link_assignment even if the symbol is defined.
806 This is because if it is defined by a dynamic object, we
807 actually want to use the value defined by the linker script,
808 not the value from the dynamic object (because we are setting
809 symbols like etext). If the symbol is defined by a regular
810 object, then, as it happens, calling record_link_assignment
811 will do no harm. */
812
813 /* Fall through. */
814 case etree_assign:
815 if (strcmp (exp->assign.dst, ".") != 0)
816 {
817 if (! (bfd_elf${ELFSIZE}_record_link_assignment
818 (output_bfd, &link_info, exp->assign.dst,
819 exp->type.node_class == etree_provide ? TRUE : FALSE)))
820 einfo ("%P%F: failed to record assignment to %s: %E\n",
821 exp->assign.dst);
822 }
823 gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src);
824 break;
825
826 case etree_binary:
827 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs);
828 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs);
829 break;
830
831 case etree_trinary:
832 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond);
833 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs);
834 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs);
835 break;
836
837 case etree_unary:
838 gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child);
839 break;
840
841 default:
842 break;
843 }
844 }
845
846
847 /* This is called by the before_allocation routine via
848 lang_for_each_statement. It locates any assignment statements, and
849 tells the ELF backend about them, in case they are assignments to
850 symbols which are referred to by dynamic objects. */
851
852 static void
853 gld${EMULATION_NAME}_find_statement_assignment (s)
854 lang_statement_union_type *s;
855 {
856 if (s->header.type == lang_assignment_statement_enum)
857 gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp);
858 }
859
860 EOF
861
862 if test x"$LDEMUL_BEFORE_ALLOCATION" != xgld"$EMULATION_NAME"_before_allocation; then
863 if test x"${ELF_INTERPRETER_NAME+set}" = xset; then
864 ELF_INTERPRETER_SET_DEFAULT="
865 if (sinterp != NULL)
866 {
867 sinterp->contents = ${ELF_INTERPRETER_NAME};
868 sinterp->_raw_size = strlen (sinterp->contents) + 1;
869 }
870
871 "
872 else
873 ELF_INTERPRETER_SET_DEFAULT=
874 fi
875 cat >>e${EMULATION_NAME}.c <<EOF
876
877 /* This is called after the sections have been attached to output
878 sections, but before any sizes or addresses have been set. */
879
880 static void
881 gld${EMULATION_NAME}_before_allocation ()
882 {
883 const char *rpath;
884 asection *sinterp;
885
886 /* If we are going to make any variable assignments, we need to let
887 the ELF backend know about them in case the variables are
888 referred to by dynamic objects. */
889 lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment);
890
891 /* Let the ELF backend work out the sizes of any sections required
892 by dynamic linking. */
893 rpath = command_line.rpath;
894 if (rpath == NULL)
895 rpath = (const char *) getenv ("LD_RUN_PATH");
896 if (! (bfd_elf${ELFSIZE}_size_dynamic_sections
897 (output_bfd, command_line.soname, rpath,
898 command_line.filter_shlib,
899 (const char * const *) command_line.auxiliary_filters,
900 &link_info, &sinterp, lang_elf_version_info)))
901 einfo ("%P%F: failed to set dynamic section sizes: %E\n");
902 ${ELF_INTERPRETER_SET_DEFAULT}
903 /* Let the user override the dynamic linker we are using. */
904 if (command_line.interpreter != NULL
905 && sinterp != NULL)
906 {
907 sinterp->contents = (bfd_byte *) command_line.interpreter;
908 sinterp->_raw_size = strlen (command_line.interpreter) + 1;
909 }
910
911 /* Look for any sections named .gnu.warning. As a GNU extensions,
912 we treat such sections as containing warning messages. We print
913 out the warning message, and then zero out the section size so
914 that it does not get copied into the output file. */
915
916 {
917 LANG_FOR_EACH_INPUT_STATEMENT (is)
918 {
919 asection *s;
920 bfd_size_type sz;
921 char *msg;
922 bfd_boolean ret;
923
924 if (is->just_syms_flag)
925 continue;
926
927 s = bfd_get_section_by_name (is->the_bfd, ".gnu.warning");
928 if (s == NULL)
929 continue;
930
931 sz = bfd_section_size (is->the_bfd, s);
932 msg = xmalloc ((size_t) sz + 1);
933 if (! bfd_get_section_contents (is->the_bfd, s, msg, (file_ptr) 0, sz))
934 einfo ("%F%B: Can't read contents of section .gnu.warning: %E\n",
935 is->the_bfd);
936 msg[sz] = '\0';
937 ret = link_info.callbacks->warning (&link_info, msg,
938 (const char *) NULL,
939 is->the_bfd, (asection *) NULL,
940 (bfd_vma) 0);
941 ASSERT (ret);
942 free (msg);
943
944 /* Clobber the section size, so that we don't waste copying the
945 warning into the output file. */
946 s->_raw_size = 0;
947 }
948 }
949 }
950
951 EOF
952 fi
953
954 if test x"$LDEMUL_OPEN_DYNAMIC_ARCHIVE" != xgld"$EMULATION_NAME"_open_dynamic_archive; then
955 cat >>e${EMULATION_NAME}.c <<EOF
956
957 /* Try to open a dynamic archive. This is where we know that ELF
958 dynamic libraries have an extension of .so (or .sl on oddball systems
959 like hpux). */
960
961 static bfd_boolean
962 gld${EMULATION_NAME}_open_dynamic_archive (arch, search, entry)
963 const char *arch;
964 search_dirs_type *search;
965 lang_input_statement_type *entry;
966 {
967 const char *filename;
968 char *string;
969
970 if (! entry->is_archive)
971 return FALSE;
972
973 filename = entry->filename;
974
975 /* This allocates a few bytes too many when EXTRA_SHLIB_EXTENSION
976 is defined, but it does not seem worth the headache to optimize
977 away those two bytes of space. */
978 string = (char *) xmalloc (strlen (search->name)
979 + strlen (filename)
980 + strlen (arch)
981 #ifdef EXTRA_SHLIB_EXTENSION
982 + strlen (EXTRA_SHLIB_EXTENSION)
983 #endif
984 + sizeof "/lib.so");
985
986 sprintf (string, "%s/lib%s%s.so", search->name, filename, arch);
987
988 #ifdef EXTRA_SHLIB_EXTENSION
989 /* Try the .so extension first. If that fails build a new filename
990 using EXTRA_SHLIB_EXTENSION. */
991 if (! ldfile_try_open_bfd (string, entry))
992 sprintf (string, "%s/lib%s%s%s", search->name,
993 filename, arch, EXTRA_SHLIB_EXTENSION);
994 #endif
995
996 if (! ldfile_try_open_bfd (string, entry))
997 {
998 free (string);
999 return FALSE;
1000 }
1001
1002 entry->filename = string;
1003
1004 /* We have found a dynamic object to include in the link. The ELF
1005 backend linker will create a DT_NEEDED entry in the .dynamic
1006 section naming this file. If this file includes a DT_SONAME
1007 entry, it will be used. Otherwise, the ELF linker will just use
1008 the name of the file. For an archive found by searching, like
1009 this one, the DT_NEEDED entry should consist of just the name of
1010 the file, without the path information used to find it. Note
1011 that we only need to do this if we have a dynamic object; an
1012 archive will never be referenced by a DT_NEEDED entry.
1013
1014 FIXME: This approach--using bfd_elf_set_dt_needed_name--is not
1015 very pretty. I haven't been able to think of anything that is
1016 pretty, though. */
1017 if (bfd_check_format (entry->the_bfd, bfd_object)
1018 && (entry->the_bfd->flags & DYNAMIC) != 0)
1019 {
1020 ASSERT (entry->is_archive && entry->search_dirs_flag);
1021
1022 /* Rather than duplicating the logic above. Just use the
1023 filename we recorded earlier. */
1024
1025 filename = lbasename (entry->filename);
1026 bfd_elf_set_dt_needed_name (entry->the_bfd, filename);
1027 }
1028
1029 return TRUE;
1030 }
1031
1032 EOF
1033 fi
1034
1035 if test x"$LDEMUL_PLACE_ORPHAN" != xgld"$EMULATION_NAME"_place_orphan; then
1036 cat >>e${EMULATION_NAME}.c <<EOF
1037
1038 /* A variant of lang_output_section_find. Used by place_orphan. */
1039
1040 static lang_output_section_statement_type *
1041 output_rel_find (sec)
1042 asection *sec;
1043 {
1044 lang_statement_union_type *u;
1045 lang_output_section_statement_type *lookup;
1046 lang_output_section_statement_type *last = NULL;
1047 lang_output_section_statement_type *last_rel = NULL;
1048 lang_output_section_statement_type *last_rel_alloc = NULL;
1049 int rela = sec->name[4] == 'a';
1050
1051 for (u = lang_output_section_statement.head; u; u = lookup->next)
1052 {
1053 lookup = &u->output_section_statement;
1054 if (strncmp (".rel", lookup->name, 4) == 0)
1055 {
1056 /* Don't place after .rel.plt as doing so results in wrong
1057 dynamic tags. Also, place allocated reloc sections before
1058 non-allocated. */
1059 int lookrela = lookup->name[4] == 'a';
1060
1061 if (strcmp (".plt", lookup->name + 4 + lookrela) == 0
1062 || (lookup->bfd_section != NULL
1063 && (lookup->bfd_section->flags & SEC_ALLOC) == 0))
1064 break;
1065 last = lookup;
1066 if (rela == lookrela)
1067 last_rel = lookup;
1068 if (lookup->bfd_section != NULL
1069 && (lookup->bfd_section->flags & SEC_ALLOC) != 0)
1070 last_rel_alloc = lookup;
1071 }
1072 }
1073
1074 if (last_rel_alloc)
1075 return last_rel_alloc;
1076
1077 if (last_rel)
1078 return last_rel;
1079
1080 return last;
1081 }
1082
1083 /* Find the last output section before given output statement.
1084 Used by place_orphan. */
1085
1086 static asection *
1087 output_prev_sec_find (os)
1088 lang_output_section_statement_type *os;
1089 {
1090 asection *s = (asection *) NULL;
1091 lang_statement_union_type *u;
1092 lang_output_section_statement_type *lookup;
1093
1094 for (u = lang_output_section_statement.head;
1095 u != (lang_statement_union_type *) NULL;
1096 u = lookup->next)
1097 {
1098 lookup = &u->output_section_statement;
1099 if (lookup == os)
1100 return s;
1101
1102 if (lookup->bfd_section != NULL && lookup->bfd_section->owner != NULL)
1103 s = lookup->bfd_section;
1104 }
1105
1106 return NULL;
1107 }
1108
1109 /* Place an orphan section. We use this to put random SHF_ALLOC
1110 sections in the right segment. */
1111
1112 struct orphan_save {
1113 lang_output_section_statement_type *os;
1114 asection **section;
1115 lang_statement_union_type **stmt;
1116 lang_statement_union_type **os_tail;
1117 };
1118
1119 static bfd_boolean
1120 gld${EMULATION_NAME}_place_orphan (file, s)
1121 lang_input_statement_type *file;
1122 asection *s;
1123 {
1124 static struct orphan_save hold_text;
1125 static struct orphan_save hold_rodata;
1126 static struct orphan_save hold_data;
1127 static struct orphan_save hold_bss;
1128 static struct orphan_save hold_rel;
1129 static struct orphan_save hold_interp;
1130 static struct orphan_save hold_sdata;
1131 static int count = 1;
1132 struct orphan_save *place;
1133 lang_statement_list_type *old;
1134 lang_statement_list_type add;
1135 etree_type *address;
1136 const char *secname;
1137 const char *ps = NULL;
1138 lang_output_section_statement_type *os;
1139 lang_statement_union_type **os_tail;
1140 etree_type *load_base;
1141 int isdyn = 0;
1142
1143 secname = bfd_get_section_name (s->owner, s);
1144 if (! link_info.relocateable
1145 && link_info.combreloc
1146 && (s->flags & SEC_ALLOC)
1147 && strncmp (secname, ".rel", 4) == 0)
1148 {
1149 if (secname[4] == 'a')
1150 secname = ".rela.dyn";
1151 else
1152 secname = ".rel.dyn";
1153 isdyn = 1;
1154 }
1155
1156 if (isdyn || (!config.unique_orphan_sections && !unique_section_p (secname)))
1157 {
1158 /* Look through the script to see where to place this section. */
1159 os = lang_output_section_find (secname);
1160
1161 if (os != NULL
1162 && (os->bfd_section == NULL
1163 || ((s->flags ^ os->bfd_section->flags)
1164 & (SEC_LOAD | SEC_ALLOC)) == 0))
1165 {
1166 /* We already have an output section statement with this
1167 name, and its bfd section, if any, has compatible flags. */
1168 lang_add_section (&os->children, s, os, file);
1169 return TRUE;
1170 }
1171 }
1172
1173 if (hold_text.os == NULL)
1174 hold_text.os = lang_output_section_find (".text");
1175
1176 /* If this is a final link, then always put .gnu.warning.SYMBOL
1177 sections into the .text section to get them out of the way. */
1178 if (! link_info.shared
1179 && ! link_info.relocateable
1180 && strncmp (secname, ".gnu.warning.", sizeof ".gnu.warning." - 1) == 0
1181 && hold_text.os != NULL)
1182 {
1183 lang_add_section (&hold_text.os->children, s, hold_text.os, file);
1184 return TRUE;
1185 }
1186
1187 /* Decide which segment the section should go in based on the
1188 section name and section flags. We put loadable .note sections
1189 right after the .interp section, so that the PT_NOTE segment is
1190 stored right after the program headers where the OS can read it
1191 in the first page. */
1192 #define HAVE_SECTION(hold, name) \
1193 (hold.os != NULL || (hold.os = lang_output_section_find (name)) != NULL)
1194
1195 if ((s->flags & SEC_EXCLUDE) != 0 && !link_info.relocateable)
1196 {
1197 if (s->output_section == NULL)
1198 s->output_section = bfd_abs_section_ptr;
1199 return TRUE;
1200 }
1201
1202 place = NULL;
1203 if ((s->flags & SEC_ALLOC) == 0)
1204 ;
1205 else if ((s->flags & SEC_LOAD) != 0
1206 && strncmp (secname, ".note", 5) == 0
1207 && HAVE_SECTION (hold_interp, ".interp"))
1208 place = &hold_interp;
1209 else if ((s->flags & SEC_HAS_CONTENTS) == 0
1210 && HAVE_SECTION (hold_bss, ".bss"))
1211 place = &hold_bss;
1212 else if ((s->flags & SEC_SMALL_DATA) != 0
1213 && HAVE_SECTION (hold_sdata, ".sdata"))
1214 place = &hold_sdata;
1215 else if ((s->flags & SEC_READONLY) == 0
1216 && HAVE_SECTION (hold_data, ".data"))
1217 place = &hold_data;
1218 else if (strncmp (secname, ".rel", 4) == 0
1219 && (s->flags & SEC_LOAD) != 0
1220 && (hold_rel.os != NULL
1221 || (hold_rel.os = output_rel_find (s)) != NULL))
1222 place = &hold_rel;
1223 else if ((s->flags & (SEC_CODE | SEC_READONLY)) == SEC_READONLY
1224 && HAVE_SECTION (hold_rodata, ".rodata"))
1225 place = &hold_rodata;
1226 else if ((s->flags & (SEC_CODE | SEC_READONLY)) == (SEC_CODE | SEC_READONLY)
1227 && hold_text.os != NULL)
1228 place = &hold_text;
1229
1230 #undef HAVE_SECTION
1231
1232 /* Choose a unique name for the section. This will be needed if the
1233 same section name appears in the input file with different
1234 loadable or allocatable characteristics. */
1235 if (bfd_get_section_by_name (output_bfd, secname) != NULL)
1236 {
1237 secname = bfd_get_unique_section_name (output_bfd, secname, &count);
1238 if (secname == NULL)
1239 einfo ("%F%P: place_orphan failed: %E\n");
1240 }
1241
1242 /* Start building a list of statements for this section.
1243 First save the current statement pointer. */
1244 old = stat_ptr;
1245
1246 /* If we have found an appropriate place for the output section
1247 statements for this orphan, add them to our own private list,
1248 inserting them later into the global statement list. */
1249 if (place != NULL)
1250 {
1251 stat_ptr = &add;
1252 lang_list_init (stat_ptr);
1253 }
1254
1255 if (config.build_constructors)
1256 {
1257 /* If the name of the section is representable in C, then create
1258 symbols to mark the start and the end of the section. */
1259 for (ps = secname; *ps != '\0'; ps++)
1260 if (! ISALNUM (*ps) && *ps != '_')
1261 break;
1262 if (*ps == '\0')
1263 {
1264 char *symname;
1265 etree_type *e_align;
1266
1267 symname = (char *) xmalloc (ps - secname + sizeof "__start_");
1268 sprintf (symname, "__start_%s", secname);
1269 e_align = exp_unop (ALIGN_K,
1270 exp_intop ((bfd_vma) 1 << s->alignment_power));
1271 lang_add_assignment (exp_assop ('=', symname, e_align));
1272 }
1273 }
1274
1275 address = NULL;
1276 if (link_info.relocateable || (s->flags & (SEC_LOAD | SEC_ALLOC)) == 0)
1277 address = exp_intop ((bfd_vma) 0);
1278
1279 load_base = NULL;
1280 if (place != NULL && place->os->load_base != NULL)
1281 {
1282 etree_type *lma_from_vma;
1283 lma_from_vma = exp_binop ('-', place->os->load_base,
1284 exp_nameop (ADDR, place->os->name));
1285 load_base = exp_binop ('+', lma_from_vma,
1286 exp_nameop (ADDR, secname));
1287 }
1288
1289 os_tail = lang_output_section_statement.tail;
1290 os = lang_enter_output_section_statement (secname, address, 0,
1291 (bfd_vma) 0,
1292 (etree_type *) NULL,
1293 (etree_type *) NULL,
1294 load_base);
1295
1296 lang_add_section (&os->children, s, os, file);
1297
1298 lang_leave_output_section_statement
1299 ((bfd_vma) 0, "*default*",
1300 (struct lang_output_section_phdr_list *) NULL, NULL);
1301
1302 if (config.build_constructors && *ps == '\0')
1303 {
1304 char *symname;
1305
1306 /* lang_leave_ouput_section_statement resets stat_ptr. Put
1307 stat_ptr back where we want it. */
1308 if (place != NULL)
1309 stat_ptr = &add;
1310
1311 symname = (char *) xmalloc (ps - secname + sizeof "__stop_");
1312 sprintf (symname, "__stop_%s", secname);
1313 lang_add_assignment (exp_assop ('=', symname,
1314 exp_nameop (NAME, ".")));
1315 }
1316
1317 /* Restore the global list pointer. */
1318 stat_ptr = old;
1319
1320 if (place != NULL && os->bfd_section != NULL)
1321 {
1322 asection *snew, **pps;
1323
1324 snew = os->bfd_section;
1325
1326 /* Shuffle the bfd section list to make the output file look
1327 neater. This is really only cosmetic. */
1328 if (place->section == NULL)
1329 {
1330 asection *bfd_section = place->os->bfd_section;
1331
1332 /* If the output statement hasn't been used to place
1333 any input sections (and thus doesn't have an output
1334 bfd_section), look for the closest prior output statement
1335 having an output section. */
1336 if (bfd_section == NULL)
1337 bfd_section = output_prev_sec_find (place->os);
1338
1339 if (bfd_section != NULL && bfd_section != snew)
1340 place->section = &bfd_section->next;
1341 }
1342
1343 if (place->section != NULL)
1344 {
1345 /* Unlink the section. */
1346 for (pps = &output_bfd->sections; *pps != snew; pps = &(*pps)->next)
1347 ;
1348 bfd_section_list_remove (output_bfd, pps);
1349
1350 /* Now tack it on to the "place->os" section list. */
1351 bfd_section_list_insert (output_bfd, place->section, snew);
1352 }
1353
1354 /* Save the end of this list. Further ophans of this type will
1355 follow the one we've just added. */
1356 place->section = &snew->next;
1357
1358 /* The following is non-cosmetic. We try to put the output
1359 statements in some sort of reasonable order here, because
1360 they determine the final load addresses of the orphan
1361 sections. In addition, placing output statements in the
1362 wrong order may require extra segments. For instance,
1363 given a typical situation of all read-only sections placed
1364 in one segment and following that a segment containing all
1365 the read-write sections, we wouldn't want to place an orphan
1366 read/write section before or amongst the read-only ones. */
1367 if (add.head != NULL)
1368 {
1369 lang_statement_union_type *newly_added_os;
1370
1371 if (place->stmt == NULL)
1372 {
1373 /* Put the new statement list right at the head. */
1374 *add.tail = place->os->header.next;
1375 place->os->header.next = add.head;
1376
1377 place->os_tail = &place->os->next;
1378 }
1379 else
1380 {
1381 /* Put it after the last orphan statement we added. */
1382 *add.tail = *place->stmt;
1383 *place->stmt = add.head;
1384 }
1385
1386 /* Fix the global list pointer if we happened to tack our
1387 new list at the tail. */
1388 if (*old->tail == add.head)
1389 old->tail = add.tail;
1390
1391 /* Save the end of this list. */
1392 place->stmt = add.tail;
1393
1394 /* Do the same for the list of output section statements. */
1395 newly_added_os = *os_tail;
1396 *os_tail = NULL;
1397 newly_added_os->output_section_statement.next = *place->os_tail;
1398 *place->os_tail = newly_added_os;
1399 place->os_tail = &newly_added_os->output_section_statement.next;
1400
1401 /* Fixing the global list pointer here is a little different.
1402 We added to the list in lang_enter_output_section_statement,
1403 trimmed off the new output_section_statment above when
1404 assigning *os_tail = NULL, but possibly added it back in
1405 the same place when assigning *place->os_tail. */
1406 if (*os_tail == NULL)
1407 lang_output_section_statement.tail = os_tail;
1408 }
1409 }
1410
1411 return TRUE;
1412 }
1413 EOF
1414 fi
1415
1416 if test x"$LDEMUL_FINISH" != xgld"$EMULATION_NAME"_finish; then
1417 cat >>e${EMULATION_NAME}.c <<EOF
1418
1419 static void
1420 gld${EMULATION_NAME}_finish ()
1421 {
1422 if (bfd_elf${ELFSIZE}_discard_info (output_bfd, &link_info))
1423 {
1424 lang_reset_memory_regions ();
1425
1426 /* Resize the sections. */
1427 lang_size_sections (stat_ptr->head, abs_output_section,
1428 &stat_ptr->head, 0, (bfd_vma) 0, NULL);
1429
1430 /* Redo special stuff. */
1431 ldemul_after_allocation ();
1432
1433 /* Do the assignments again. */
1434 lang_do_assignments (stat_ptr->head, abs_output_section,
1435 (fill_type *) 0, (bfd_vma) 0);
1436 }
1437 }
1438 EOF
1439 fi
1440
1441 if test x"$LDEMUL_GET_SCRIPT" != xgld"$EMULATION_NAME"_get_script; then
1442 cat >>e${EMULATION_NAME}.c <<EOF
1443
1444 static char *
1445 gld${EMULATION_NAME}_get_script (isfile)
1446 int *isfile;
1447 EOF
1448
1449 if test -n "$COMPILE_IN"
1450 then
1451 # Scripts compiled in.
1452
1453 # sed commands to quote an ld script as a C string.
1454 sc="-f stringify.sed"
1455
1456 cat >>e${EMULATION_NAME}.c <<EOF
1457 {
1458 *isfile = 0;
1459
1460 if (link_info.relocateable && config.build_constructors)
1461 return
1462 EOF
1463 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1464 echo ' ; else if (link_info.relocateable) return' >> e${EMULATION_NAME}.c
1465 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
1466 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
1467 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
1468 if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then : ; else
1469 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
1470 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
1471 fi
1472 if test -n "$GENERATE_SHLIB_SCRIPT" ; then
1473 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1474 echo ' ; else if (link_info.shared && link_info.combreloc) return' >> e${EMULATION_NAME}.c
1475 sed $sc ldscripts/${EMULATION_NAME}.xsc >> e${EMULATION_NAME}.c
1476 fi
1477 echo ' ; else if (link_info.shared) return' >> e${EMULATION_NAME}.c
1478 sed $sc ldscripts/${EMULATION_NAME}.xs >> e${EMULATION_NAME}.c
1479 fi
1480 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1481 echo ' ; else if (link_info.combreloc) return' >> e${EMULATION_NAME}.c
1482 sed $sc ldscripts/${EMULATION_NAME}.xc >> e${EMULATION_NAME}.c
1483 fi
1484 echo ' ; else return' >> e${EMULATION_NAME}.c
1485 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
1486 echo '; }' >> e${EMULATION_NAME}.c
1487
1488 else
1489 # Scripts read from the filesystem.
1490
1491 cat >>e${EMULATION_NAME}.c <<EOF
1492 {
1493 *isfile = 1;
1494
1495 if (link_info.relocateable && config.build_constructors)
1496 return "ldscripts/${EMULATION_NAME}.xu";
1497 else if (link_info.relocateable)
1498 return "ldscripts/${EMULATION_NAME}.xr";
1499 else if (!config.text_read_only)
1500 return "ldscripts/${EMULATION_NAME}.xbn";
1501 else if (!config.magic_demand_paged)
1502 return "ldscripts/${EMULATION_NAME}.xn";
1503 else if (link_info.shared)
1504 return "ldscripts/${EMULATION_NAME}.xs";
1505 else
1506 return "ldscripts/${EMULATION_NAME}.x";
1507 }
1508
1509 EOF
1510 fi
1511 fi
1512
1513 if test -n "$PARSE_AND_LIST_ARGS_CASES" -o x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1514
1515 if test x"$LDEMUL_PARSE_ARGS" != xgld"$EMULATION_NAME"_parse_args; then
1516
1517 if test -n "$PARSE_AND_LIST_PROLOGUE" ; then
1518 cat >>e${EMULATION_NAME}.c <<EOF
1519 $PARSE_AND_LIST_PROLOGUE
1520 EOF
1521 fi
1522
1523 cat >>e${EMULATION_NAME}.c <<EOF
1524
1525 #include "getopt.h"
1526
1527 #define OPTION_DISABLE_NEW_DTAGS (400)
1528 #define OPTION_ENABLE_NEW_DTAGS (OPTION_DISABLE_NEW_DTAGS + 1)
1529 #define OPTION_GROUP (OPTION_ENABLE_NEW_DTAGS + 1)
1530 #define OPTION_EH_FRAME_HDR (OPTION_GROUP + 1)
1531
1532 static struct option longopts[] =
1533 {
1534 EOF
1535
1536 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1537 cat >>e${EMULATION_NAME}.c <<EOF
1538 /* getopt allows abbreviations, so we do this to stop it from
1539 treating -d/-e as abbreviations for these options. */
1540 {"disable-new-dtags", no_argument, NULL, OPTION_DISABLE_NEW_DTAGS},
1541 {"disable-new-dtags", no_argument, NULL, OPTION_DISABLE_NEW_DTAGS},
1542 {"enable-new-dtags", no_argument, NULL, OPTION_ENABLE_NEW_DTAGS},
1543 {"enable-new-dtags", no_argument, NULL, OPTION_ENABLE_NEW_DTAGS},
1544 {"eh-frame-hdr", no_argument, NULL, OPTION_EH_FRAME_HDR},
1545 {"Bgroup", no_argument, NULL, OPTION_GROUP},
1546 {"Bgroup", no_argument, NULL, OPTION_GROUP},
1547 EOF
1548 fi
1549
1550 if test -n "$PARSE_AND_LIST_LONGOPTS" ; then
1551 cat >>e${EMULATION_NAME}.c <<EOF
1552 $PARSE_AND_LIST_LONGOPTS
1553 EOF
1554 fi
1555
1556 cat >>e${EMULATION_NAME}.c <<EOF
1557 {NULL, no_argument, NULL, 0}
1558 };
1559
1560
1561 static int gld${EMULATION_NAME}_parse_args PARAMS ((int, char **));
1562
1563 static int
1564 gld${EMULATION_NAME}_parse_args (argc, argv)
1565 int argc;
1566 char ** argv;
1567 {
1568 int longind;
1569 int optc;
1570 static int prevoptind = -1;
1571 int prevopterr = opterr;
1572 int wanterror;
1573
1574 if (prevoptind != optind)
1575 opterr = 0;
1576
1577 wanterror = opterr;
1578 prevoptind = optind;
1579
1580 optc = getopt_long_only (argc, argv,
1581 "-${PARSE_AND_LIST_SHORTOPTS}z:", longopts,
1582 &longind);
1583 opterr = prevopterr;
1584
1585 switch (optc)
1586 {
1587 default:
1588 if (wanterror)
1589 xexit (1);
1590 optind = prevoptind;
1591 return 0;
1592
1593 EOF
1594
1595 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1596 cat >>e${EMULATION_NAME}.c <<EOF
1597 case OPTION_DISABLE_NEW_DTAGS:
1598 link_info.new_dtags = FALSE;
1599 break;
1600
1601 case OPTION_ENABLE_NEW_DTAGS:
1602 link_info.new_dtags = TRUE;
1603 break;
1604
1605 case OPTION_EH_FRAME_HDR:
1606 link_info.eh_frame_hdr = TRUE;
1607 break;
1608
1609 case OPTION_GROUP:
1610 link_info.flags_1 |= (bfd_vma) DF_1_GROUP;
1611 /* Groups must be self-contained. */
1612 link_info.no_undefined = TRUE;
1613 break;
1614
1615 case 'z':
1616 if (strcmp (optarg, "initfirst") == 0)
1617 link_info.flags_1 |= (bfd_vma) DF_1_INITFIRST;
1618 else if (strcmp (optarg, "interpose") == 0)
1619 link_info.flags_1 |= (bfd_vma) DF_1_INTERPOSE;
1620 else if (strcmp (optarg, "loadfltr") == 0)
1621 link_info.flags_1 |= (bfd_vma) DF_1_LOADFLTR;
1622 else if (strcmp (optarg, "nodefaultlib") == 0)
1623 link_info.flags_1 |= (bfd_vma) DF_1_NODEFLIB;
1624 else if (strcmp (optarg, "nodelete") == 0)
1625 link_info.flags_1 |= (bfd_vma) DF_1_NODELETE;
1626 else if (strcmp (optarg, "nodlopen") == 0)
1627 link_info.flags_1 |= (bfd_vma) DF_1_NOOPEN;
1628 else if (strcmp (optarg, "nodump") == 0)
1629 link_info.flags_1 |= (bfd_vma) DF_1_NODUMP;
1630 else if (strcmp (optarg, "now") == 0)
1631 {
1632 link_info.flags |= (bfd_vma) DF_BIND_NOW;
1633 link_info.flags_1 |= (bfd_vma) DF_1_NOW;
1634 }
1635 else if (strcmp (optarg, "origin") == 0)
1636 {
1637 link_info.flags |= (bfd_vma) DF_ORIGIN;
1638 link_info.flags_1 |= (bfd_vma) DF_1_ORIGIN;
1639 }
1640 else if (strcmp (optarg, "defs") == 0)
1641 link_info.no_undefined = TRUE;
1642 else if (strcmp (optarg, "muldefs") == 0)
1643 link_info.allow_multiple_definition = TRUE;
1644 else if (strcmp (optarg, "combreloc") == 0)
1645 link_info.combreloc = TRUE;
1646 else if (strcmp (optarg, "nocombreloc") == 0)
1647 link_info.combreloc = FALSE;
1648 else if (strcmp (optarg, "nocopyreloc") == 0)
1649 link_info.nocopyreloc = TRUE;
1650 /* What about the other Solaris -z options? FIXME. */
1651 break;
1652 EOF
1653 fi
1654
1655 if test -n "$PARSE_AND_LIST_ARGS_CASES" ; then
1656 cat >>e${EMULATION_NAME}.c <<EOF
1657 $PARSE_AND_LIST_ARGS_CASES
1658 EOF
1659 fi
1660
1661 cat >>e${EMULATION_NAME}.c <<EOF
1662 }
1663
1664 return 1;
1665 }
1666
1667 EOF
1668 fi
1669
1670 if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
1671 cat >>e${EMULATION_NAME}.c <<EOF
1672
1673 static void gld${EMULATION_NAME}_list_options PARAMS ((FILE * file));
1674
1675 static void
1676 gld${EMULATION_NAME}_list_options (file)
1677 FILE * file;
1678 {
1679 EOF
1680
1681 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1682 cat >>e${EMULATION_NAME}.c <<EOF
1683 fprintf (file, _(" -Bgroup\t\tSelects group name lookup rules for DSO\n"));
1684 fprintf (file, _(" --disable-new-dtags\tDisable new dynamic tags\n"));
1685 fprintf (file, _(" --enable-new-dtags\tEnable new dynamic tags\n"));
1686 fprintf (file, _(" --eh-frame-hdr\tCreate .eh_frame_hdr section\n"));
1687 fprintf (file, _(" -z combreloc\t\tMerge dynamic relocs into one section and sort\n"));
1688 fprintf (file, _(" -z defs\t\tDisallows undefined symbols\n"));
1689 fprintf (file, _(" -z initfirst\t\tMark DSO to be initialized first at runtime\n"));
1690 fprintf (file, _(" -z interpose\t\tMark object to interpose all DSOs but executable\n"));
1691 fprintf (file, _(" -z loadfltr\t\tMark object requiring immediate process\n"));
1692 fprintf (file, _(" -z muldefs\t\tAllow multiple definitions\n"));
1693 fprintf (file, _(" -z nocombreloc\tDon't merge dynamic relocs into one section\n"));
1694 fprintf (file, _(" -z nocopyreloc\tDon't create copy relocs\n"));
1695 fprintf (file, _(" -z nodefaultlib\tMark object not to use default search paths\n"));
1696 fprintf (file, _(" -z nodelete\t\tMark DSO non-deletable at runtime\n"));
1697 fprintf (file, _(" -z nodlopen\t\tMark DSO not available to dlopen\n"));
1698 fprintf (file, _(" -z nodump\t\tMark DSO not available to dldump\n"));
1699 fprintf (file, _(" -z now\t\tMark object non-lazy runtime binding\n"));
1700 fprintf (file, _(" -z origin\t\tMark object requiring immediate \$ORIGIN processing\n\t\t\t at runtime\n"));
1701 fprintf (file, _(" -z KEYWORD\t\tIgnored for Solaris compatibility\n"));
1702 EOF
1703 fi
1704
1705 if test -n "$PARSE_AND_LIST_OPTIONS" ; then
1706 cat >>e${EMULATION_NAME}.c <<EOF
1707 $PARSE_AND_LIST_OPTIONS
1708 EOF
1709 fi
1710
1711 cat >>e${EMULATION_NAME}.c <<EOF
1712 }
1713 EOF
1714
1715 if test -n "$PARSE_AND_LIST_EPILOGUE" ; then
1716 cat >>e${EMULATION_NAME}.c <<EOF
1717 $PARSE_AND_LIST_EPILOGUE
1718 EOF
1719 fi
1720 fi
1721 else
1722 if test x"$LDEMUL_PARSE_ARGS" != xgld"$EMULATION_NAME"_parse_args; then
1723 cat >>e${EMULATION_NAME}.c <<EOF
1724 #define gld${EMULATION_NAME}_parse_args NULL
1725 EOF
1726 fi
1727 if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
1728 cat >>e${EMULATION_NAME}.c <<EOF
1729 #define gld${EMULATION_NAME}_list_options NULL
1730 EOF
1731 fi
1732 fi
1733
1734 cat >>e${EMULATION_NAME}.c <<EOF
1735
1736 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
1737 {
1738 ${LDEMUL_BEFORE_PARSE-gld${EMULATION_NAME}_before_parse},
1739 ${LDEMUL_SYSLIB-syslib_default},
1740 ${LDEMUL_HLL-hll_default},
1741 ${LDEMUL_AFTER_PARSE-after_parse_default},
1742 ${LDEMUL_AFTER_OPEN-gld${EMULATION_NAME}_after_open},
1743 ${LDEMUL_AFTER_ALLOCATION-after_allocation_default},
1744 ${LDEMUL_SET_OUTPUT_ARCH-set_output_arch_default},
1745 ${LDEMUL_CHOOSE_TARGET-ldemul_default_target},
1746 ${LDEMUL_BEFORE_ALLOCATION-gld${EMULATION_NAME}_before_allocation},
1747 ${LDEMUL_GET_SCRIPT-gld${EMULATION_NAME}_get_script},
1748 "${EMULATION_NAME}",
1749 "${OUTPUT_FORMAT}",
1750 ${LDEMUL_FINISH-gld${EMULATION_NAME}_finish},
1751 ${LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS-NULL},
1752 ${LDEMUL_OPEN_DYNAMIC_ARCHIVE-gld${EMULATION_NAME}_open_dynamic_archive},
1753 ${LDEMUL_PLACE_ORPHAN-gld${EMULATION_NAME}_place_orphan},
1754 ${LDEMUL_SET_SYMBOLS-NULL},
1755 ${LDEMUL_PARSE_ARGS-gld${EMULATION_NAME}_parse_args},
1756 ${LDEMUL_UNRECOGNIZED_FILE-NULL},
1757 ${LDEMUL_LIST_OPTIONS-gld${EMULATION_NAME}_list_options},
1758 ${LDEMUL_RECOGNIZED_FILE-NULL},
1759 ${LDEMUL_FIND_POTENTIAL_LIBRARIES-NULL},
1760 ${LDEMUL_NEW_VERS_PATTERN-NULL}
1761 };
1762 EOF
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