7f8637483bd78897c72e796b8e33d308bc872088
[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 ${EMULATION_NAME}
15 Copyright 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
16 2002 Free Software Foundation, Inc.
17 Written by Steve Chamberlain <sac@cygnus.com>
18 ELF support by Ian Lance Taylor <ian@cygnus.com>
19
20 This file is part of GLD, the Gnu Linker.
21
22 This program is free software; you can redistribute it and/or modify
23 it under the terms of the GNU General Public License as published by
24 the Free Software Foundation; either version 2 of the License, or
25 (at your option) any later version.
26
27 This program is distributed in the hope that it will be useful,
28 but WITHOUT ANY WARRANTY; without even the implied warranty of
29 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30 GNU General Public License for more details.
31
32 You should have received a copy of the GNU General Public License
33 along with this program; if not, write to the Free Software
34 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
35
36 #define TARGET_IS_${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${EMULATION_NAME}_stat_needed
60 PARAMS ((lang_input_statement_type *));
61 static boolean gld${EMULATION_NAME}_try_needed
62 PARAMS ((const char *, int));
63 static 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 boolean gld${EMULATION_NAME}_open_dynamic_archive
76 PARAMS ((const char *, search_dirs_type *, lang_input_statement_type *));
77 static lang_output_section_statement_type *output_rel_find
78 PARAMS ((void));
79 static asection *output_prev_sec_find
80 PARAMS ((lang_output_section_statement_type *));
81 static boolean gld${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${EMULATION_NAME}.c <<EOF
125
126 /* These variables are required to pass information back and forth
127 between after_open and check_needed and stat_needed and vercheck. */
128
129 static struct bfd_link_needed_list *global_needed;
130 static struct stat global_stat;
131 static boolean global_found;
132 static struct bfd_link_needed_list *global_vercheck_needed;
133 static boolean global_vercheck_failed;
134
135
136 /* On Linux, it's possible to have different versions of the same
137 shared library linked against different versions of libc. The
138 dynamic linker somehow tags which libc version to use in
139 /etc/ld.so.cache, and, based on the libc that it sees in the
140 executable, chooses which version of the shared library to use.
141
142 We try to do a similar check here by checking whether this shared
143 library needs any other shared libraries which may conflict with
144 libraries we have already included in the link. If it does, we
145 skip it, and try to find another shared library farther on down the
146 link path.
147
148 This is called via lang_for_each_input_file.
149 GLOBAL_VERCHECK_NEEDED is the list of objects needed by the object
150 which we are checking. This sets GLOBAL_VERCHECK_FAILED if we find
151 a conflicting version. */
152
153 static void
154 gld${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${EMULATION_NAME}_stat_needed (s)
208 lang_input_statement_type *s;
209 {
210 struct stat st;
211 const char *suffix;
212 const char *soname;
213
214 if (global_found)
215 return;
216 if (s->the_bfd == NULL)
217 return;
218
219 if (bfd_stat (s->the_bfd, &st) != 0)
220 {
221 einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd);
222 return;
223 }
224
225 if (st.st_dev == global_stat.st_dev
226 && st.st_ino == global_stat.st_ino)
227 {
228 global_found = true;
229 return;
230 }
231
232 /* We issue a warning if it looks like we are including two
233 different versions of the same shared library. For example,
234 there may be a problem if -lc picks up libc.so.6 but some other
235 shared library has a DT_NEEDED entry of libc.so.5. This is a
236 heuristic test, and it will only work if the name looks like
237 NAME.so.VERSION. FIXME: Depending on file names is error-prone.
238 If we really want to issue warnings about mixing version numbers
239 of shared libraries, we need to find a better way. */
240
241 if (strchr (global_needed->name, '/') != NULL)
242 return;
243 suffix = strstr (global_needed->name, ".so.");
244 if (suffix == NULL)
245 return;
246 suffix += sizeof ".so." - 1;
247
248 soname = bfd_elf_get_dt_soname (s->the_bfd);
249 if (soname == NULL)
250 soname = lbasename (s->filename);
251
252 if (strncmp (soname, global_needed->name, suffix - global_needed->name) == 0)
253 einfo ("%P: warning: %s, needed by %B, may conflict with %s\n",
254 global_needed->name, global_needed->by, soname);
255 }
256
257
258 /* This function is called for each possible name for a dynamic object
259 named by a DT_NEEDED entry. The FORCE parameter indicates whether
260 to skip the check for a conflicting version. */
261
262 static boolean
263 gld${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 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${EMULATION_NAME}_try_needed (filename, force))
429 return true;
430
431 free (filename);
432
433 if (*s == '\0')
434 break;
435 path = s + 1;
436 }
437
438 return false;
439 }
440
441 EOF
442 if [ "x${host}" = "x${target}" ] ; then
443 case " ${EMULATION_LIBPATH} " in
444 *" ${EMULATION_NAME} "*)
445 case ${target} in
446 *-*-linux-gnu*)
447 cat >>e${EMULATION_NAME}.c <<EOF
448
449 /* For a native linker, check the file /etc/ld.so.conf for directories
450 in which we may find shared libraries. /etc/ld.so.conf is really
451 only meaningful on Linux. */
452
453 static boolean gld${EMULATION_NAME}_check_ld_so_conf
454 PARAMS ((const char *, int));
455
456 static boolean
457 gld${EMULATION_NAME}_check_ld_so_conf (name, force)
458 const char *name;
459 int force;
460 {
461 static boolean initialized;
462 static char *ld_so_conf;
463
464 if (! initialized)
465 {
466 FILE *f;
467
468 f = fopen ("/etc/ld.so.conf", FOPEN_RT);
469 if (f != NULL)
470 {
471 char *b;
472 size_t len, alloc;
473 int c;
474
475 len = 0;
476 alloc = 100;
477 b = (char *) xmalloc (alloc);
478
479 while ((c = getc (f)) != EOF)
480 {
481 if (len + 1 >= alloc)
482 {
483 alloc *= 2;
484 b = (char *) xrealloc (b, alloc);
485 }
486 if (c != ':'
487 && c != ' '
488 && c != '\t'
489 && c != '\n'
490 && c != ',')
491 {
492 b[len] = c;
493 ++len;
494 }
495 else
496 {
497 if (len > 0 && b[len - 1] != ':')
498 {
499 b[len] = ':';
500 ++len;
501 }
502 }
503 }
504
505 if (len > 0 && b[len - 1] == ':')
506 --len;
507
508 if (len > 0)
509 b[len] = '\0';
510 else
511 {
512 free (b);
513 b = NULL;
514 }
515
516 fclose (f);
517
518 ld_so_conf = b;
519 }
520
521 initialized = true;
522 }
523
524 if (ld_so_conf == NULL)
525 return false;
526
527 return gld${EMULATION_NAME}_search_needed (ld_so_conf, name, force);
528 }
529
530 EOF
531 # Linux
532 ;;
533 esac
534 esac
535 fi
536 cat >>e${EMULATION_NAME}.c <<EOF
537
538 /* See if an input file matches a DT_NEEDED entry by name. */
539
540 static void
541 gld${EMULATION_NAME}_check_needed (s)
542 lang_input_statement_type *s;
543 {
544 if (global_found)
545 return;
546
547 if (s->filename != NULL)
548 {
549 const char *f;
550
551 if (strcmp (s->filename, global_needed->name) == 0)
552 {
553 global_found = true;
554 return;
555 }
556
557 if (s->search_dirs_flag)
558 {
559 f = strrchr (s->filename, '/');
560 if (f != NULL
561 && strcmp (f + 1, global_needed->name) == 0)
562 {
563 global_found = true;
564 return;
565 }
566 }
567 }
568
569 if (s->the_bfd != NULL)
570 {
571 const char *soname;
572
573 soname = bfd_elf_get_dt_soname (s->the_bfd);
574 if (soname != NULL
575 && strcmp (soname, global_needed->name) == 0)
576 {
577 global_found = true;
578 return;
579 }
580 }
581 }
582
583 EOF
584
585 if test x"$LDEMUL_AFTER_OPEN" != xgld"$EMULATION_NAME"_after_open; then
586 cat >>e${EMULATION_NAME}.c <<EOF
587
588 /* This is called after all the input files have been opened. */
589
590 static void
591 gld${EMULATION_NAME}_after_open ()
592 {
593 struct bfd_link_needed_list *needed, *l;
594
595 /* We only need to worry about this when doing a final link. */
596 if (link_info.relocateable || link_info.shared)
597 return;
598
599 /* Get the list of files which appear in DT_NEEDED entries in
600 dynamic objects included in the link (often there will be none).
601 For each such file, we want to track down the corresponding
602 library, and include the symbol table in the link. This is what
603 the runtime dynamic linker will do. Tracking the files down here
604 permits one dynamic object to include another without requiring
605 special action by the person doing the link. Note that the
606 needed list can actually grow while we are stepping through this
607 loop. */
608 needed = bfd_elf_get_needed_list (output_bfd, &link_info);
609 for (l = needed; l != NULL; l = l->next)
610 {
611 struct bfd_link_needed_list *ll;
612 int force;
613
614 /* If we've already seen this file, skip it. */
615 for (ll = needed; ll != l; ll = ll->next)
616 if (strcmp (ll->name, l->name) == 0)
617 break;
618 if (ll != l)
619 continue;
620
621 /* See if this file was included in the link explicitly. */
622 global_needed = l;
623 global_found = false;
624 lang_for_each_input_file (gld${EMULATION_NAME}_check_needed);
625 if (global_found)
626 continue;
627
628 if (trace_file_tries)
629 info_msg (_("%s needed by %B\n"), l->name, l->by);
630
631 /* We need to find this file and include the symbol table. We
632 want to search for the file in the same way that the dynamic
633 linker will search. That means that we want to use
634 rpath_link, rpath, then the environment variable
635 LD_LIBRARY_PATH (native only), then the DT_RPATH/DT_RUNPATH
636 entries (native only), then the linker script LIB_SEARCH_DIRS.
637 We do not search using the -L arguments.
638
639 We search twice. The first time, we skip objects which may
640 introduce version mismatches. The second time, we force
641 their use. See gld${EMULATION_NAME}_vercheck comment. */
642 for (force = 0; force < 2; force++)
643 {
644 size_t len;
645 search_dirs_type *search;
646 EOF
647 if [ "x${host}" = "x${target}" ] ; then
648 case " ${EMULATION_LIBPATH} " in
649 *" ${EMULATION_NAME} "*)
650 cat >>e${EMULATION_NAME}.c <<EOF
651 const char *lib_path;
652 struct bfd_link_needed_list *rp;
653 int found;
654 EOF
655 ;;
656 esac
657 fi
658 cat >>e${EMULATION_NAME}.c <<EOF
659
660 if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link,
661 l->name, force))
662 break;
663 EOF
664 if [ "x${host}" = "x${target}" ] ; then
665 case " ${EMULATION_LIBPATH} " in
666 *" ${EMULATION_NAME} "*)
667 cat >>e${EMULATION_NAME}.c <<EOF
668 if (gld${EMULATION_NAME}_search_needed (command_line.rpath,
669 l->name, force))
670 break;
671 if (command_line.rpath_link == NULL
672 && command_line.rpath == NULL)
673 {
674 lib_path = (const char *) getenv ("LD_RUN_PATH");
675 if (gld${EMULATION_NAME}_search_needed (lib_path, l->name,
676 force))
677 break;
678 }
679 lib_path = (const char *) getenv ("LD_LIBRARY_PATH");
680 if (gld${EMULATION_NAME}_search_needed (lib_path, l->name, force))
681 break;
682
683 found = 0;
684 rp = bfd_elf_get_runpath_list (output_bfd, &link_info);
685 for (; !found && rp != NULL; rp = rp->next)
686 {
687 found = (rp->by == l->by
688 && gld${EMULATION_NAME}_search_needed (rp->name,
689 l->name,
690 force));
691 }
692 if (found)
693 break;
694
695 EOF
696 ;;
697 esac
698 fi
699 cat >>e${EMULATION_NAME}.c <<EOF
700 len = strlen (l->name);
701 for (search = search_head; search != NULL; search = search->next)
702 {
703 char *filename;
704
705 if (search->cmdline)
706 continue;
707 filename = (char *) xmalloc (strlen (search->name) + len + 2);
708 sprintf (filename, "%s/%s", search->name, l->name);
709 if (gld${EMULATION_NAME}_try_needed (filename, force))
710 break;
711 free (filename);
712 }
713 if (search != NULL)
714 break;
715 EOF
716 if [ "x${host}" = "x${target}" ] ; then
717 case " ${EMULATION_LIBPATH} " in
718 *" ${EMULATION_NAME} "*)
719 case ${target} in
720 *-*-linux-gnu*)
721 cat >>e${EMULATION_NAME}.c <<EOF
722 if (gld${EMULATION_NAME}_check_ld_so_conf (l->name, force))
723 break;
724 EOF
725 # Linux
726 ;;
727 esac
728 ;;
729 esac
730 fi
731 cat >>e${EMULATION_NAME}.c <<EOF
732 }
733
734 if (force < 2)
735 continue;
736
737 einfo ("%P: warning: %s, needed by %B, not found (try using -rpath or -rpath-link)\n",
738 l->name, l->by);
739 }
740 }
741
742 EOF
743 fi
744
745 cat >>e${EMULATION_NAME}.c <<EOF
746
747 /* Look through an expression for an assignment statement. */
748
749 static void
750 gld${EMULATION_NAME}_find_exp_assignment (exp)
751 etree_type *exp;
752 {
753 struct bfd_link_hash_entry *h;
754
755 switch (exp->type.node_class)
756 {
757 case etree_provide:
758 h = bfd_link_hash_lookup (link_info.hash, exp->assign.dst,
759 false, false, false);
760 if (h == NULL)
761 break;
762
763 /* We call record_link_assignment even if the symbol is defined.
764 This is because if it is defined by a dynamic object, we
765 actually want to use the value defined by the linker script,
766 not the value from the dynamic object (because we are setting
767 symbols like etext). If the symbol is defined by a regular
768 object, then, as it happens, calling record_link_assignment
769 will do no harm. */
770
771 /* Fall through. */
772 case etree_assign:
773 if (strcmp (exp->assign.dst, ".") != 0)
774 {
775 if (! (bfd_elf${ELFSIZE}_record_link_assignment
776 (output_bfd, &link_info, exp->assign.dst,
777 exp->type.node_class == etree_provide ? true : false)))
778 einfo ("%P%F: failed to record assignment to %s: %E\n",
779 exp->assign.dst);
780 }
781 gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src);
782 break;
783
784 case etree_binary:
785 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs);
786 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs);
787 break;
788
789 case etree_trinary:
790 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond);
791 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs);
792 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs);
793 break;
794
795 case etree_unary:
796 gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child);
797 break;
798
799 default:
800 break;
801 }
802 }
803
804
805 /* This is called by the before_allocation routine via
806 lang_for_each_statement. It locates any assignment statements, and
807 tells the ELF backend about them, in case they are assignments to
808 symbols which are referred to by dynamic objects. */
809
810 static void
811 gld${EMULATION_NAME}_find_statement_assignment (s)
812 lang_statement_union_type *s;
813 {
814 if (s->header.type == lang_assignment_statement_enum)
815 gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp);
816 }
817
818 EOF
819
820 if test x"$LDEMUL_BEFORE_ALLOCATION" != xgld"$EMULATION_NAME"_before_allocation; then
821 if test x"${ELF_INTERPRETER_NAME+set}" = xset; then
822 ELF_INTERPRETER_SET_DEFAULT="
823 if (sinterp != NULL)
824 {
825 sinterp->contents = ${ELF_INTERPRETER_NAME};
826 sinterp->_raw_size = strlen (sinterp->contents) + 1;
827 }
828
829 "
830 else
831 ELF_INTERPRETER_SET_DEFAULT=
832 fi
833 cat >>e${EMULATION_NAME}.c <<EOF
834
835 /* This is called after the sections have been attached to output
836 sections, but before any sizes or addresses have been set. */
837
838 static void
839 gld${EMULATION_NAME}_before_allocation ()
840 {
841 const char *rpath;
842 asection *sinterp;
843
844 /* If we are going to make any variable assignments, we need to let
845 the ELF backend know about them in case the variables are
846 referred to by dynamic objects. */
847 lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment);
848
849 /* Let the ELF backend work out the sizes of any sections required
850 by dynamic linking. */
851 rpath = command_line.rpath;
852 if (rpath == NULL)
853 rpath = (const char *) getenv ("LD_RUN_PATH");
854 if (! (bfd_elf${ELFSIZE}_size_dynamic_sections
855 (output_bfd, command_line.soname, rpath,
856 command_line.filter_shlib,
857 (const char * const *) command_line.auxiliary_filters,
858 &link_info, &sinterp, lang_elf_version_info)))
859 einfo ("%P%F: failed to set dynamic section sizes: %E\n");
860 ${ELF_INTERPRETER_SET_DEFAULT}
861 /* Let the user override the dynamic linker we are using. */
862 if (command_line.interpreter != NULL
863 && sinterp != NULL)
864 {
865 sinterp->contents = (bfd_byte *) command_line.interpreter;
866 sinterp->_raw_size = strlen (command_line.interpreter) + 1;
867 }
868
869 /* Look for any sections named .gnu.warning. As a GNU extensions,
870 we treat such sections as containing warning messages. We print
871 out the warning message, and then zero out the section size so
872 that it does not get copied into the output file. */
873
874 {
875 LANG_FOR_EACH_INPUT_STATEMENT (is)
876 {
877 asection *s;
878 bfd_size_type sz;
879 char *msg;
880 boolean ret;
881
882 if (is->just_syms_flag)
883 continue;
884
885 s = bfd_get_section_by_name (is->the_bfd, ".gnu.warning");
886 if (s == NULL)
887 continue;
888
889 sz = bfd_section_size (is->the_bfd, s);
890 msg = xmalloc ((size_t) sz + 1);
891 if (! bfd_get_section_contents (is->the_bfd, s, msg, (file_ptr) 0, sz))
892 einfo ("%F%B: Can't read contents of section .gnu.warning: %E\n",
893 is->the_bfd);
894 msg[sz] = '\0';
895 ret = link_info.callbacks->warning (&link_info, msg,
896 (const char *) NULL,
897 is->the_bfd, (asection *) NULL,
898 (bfd_vma) 0);
899 ASSERT (ret);
900 free (msg);
901
902 /* Clobber the section size, so that we don't waste copying the
903 warning into the output file. */
904 s->_raw_size = 0;
905 }
906 }
907 }
908
909 EOF
910 fi
911
912 if test x"$LDEMUL_OPEN_DYNAMIC_ARCHIVE" != xgld"$EMULATION_NAME"_open_dynamic_archive; then
913 cat >>e${EMULATION_NAME}.c <<EOF
914
915 /* Try to open a dynamic archive. This is where we know that ELF
916 dynamic libraries have an extension of .so (or .sl on oddball systems
917 like hpux). */
918
919 static boolean
920 gld${EMULATION_NAME}_open_dynamic_archive (arch, search, entry)
921 const char *arch;
922 search_dirs_type *search;
923 lang_input_statement_type *entry;
924 {
925 const char *filename;
926 char *string;
927
928 if (! entry->is_archive)
929 return false;
930
931 filename = entry->filename;
932
933 /* This allocates a few bytes too many when EXTRA_SHLIB_EXTENSION
934 is defined, but it does not seem worth the headache to optimize
935 away those two bytes of space. */
936 string = (char *) xmalloc (strlen (search->name)
937 + strlen (filename)
938 + strlen (arch)
939 #ifdef EXTRA_SHLIB_EXTENSION
940 + strlen (EXTRA_SHLIB_EXTENSION)
941 #endif
942 + sizeof "/lib.so");
943
944 sprintf (string, "%s/lib%s%s.so", search->name, filename, arch);
945
946 #ifdef EXTRA_SHLIB_EXTENSION
947 /* Try the .so extension first. If that fails build a new filename
948 using EXTRA_SHLIB_EXTENSION. */
949 if (! ldfile_try_open_bfd (string, entry))
950 sprintf (string, "%s/lib%s%s%s", search->name,
951 filename, arch, EXTRA_SHLIB_EXTENSION);
952 #endif
953
954 if (! ldfile_try_open_bfd (string, entry))
955 {
956 free (string);
957 return false;
958 }
959
960 entry->filename = string;
961
962 /* We have found a dynamic object to include in the link. The ELF
963 backend linker will create a DT_NEEDED entry in the .dynamic
964 section naming this file. If this file includes a DT_SONAME
965 entry, it will be used. Otherwise, the ELF linker will just use
966 the name of the file. For an archive found by searching, like
967 this one, the DT_NEEDED entry should consist of just the name of
968 the file, without the path information used to find it. Note
969 that we only need to do this if we have a dynamic object; an
970 archive will never be referenced by a DT_NEEDED entry.
971
972 FIXME: This approach--using bfd_elf_set_dt_needed_name--is not
973 very pretty. I haven't been able to think of anything that is
974 pretty, though. */
975 if (bfd_check_format (entry->the_bfd, bfd_object)
976 && (entry->the_bfd->flags & DYNAMIC) != 0)
977 {
978 ASSERT (entry->is_archive && entry->search_dirs_flag);
979
980 /* Rather than duplicating the logic above. Just use the
981 filename we recorded earlier. */
982
983 filename = lbasename (entry->filename);
984 bfd_elf_set_dt_needed_name (entry->the_bfd, filename);
985 }
986
987 return true;
988 }
989
990 EOF
991 fi
992
993 if test x"$LDEMUL_PLACE_ORPHAN" != xgld"$EMULATION_NAME"_place_orphan; then
994 cat >>e${EMULATION_NAME}.c <<EOF
995
996 /* A variant of lang_output_section_find. Used by place_orphan. */
997
998 static lang_output_section_statement_type *
999 output_rel_find ()
1000 {
1001 lang_statement_union_type *u;
1002 lang_output_section_statement_type *lookup;
1003 lang_output_section_statement_type *last = NULL;
1004 lang_output_section_statement_type *last_rel = NULL;
1005 lang_output_section_statement_type *last_rel_alloc = NULL;
1006
1007 for (u = lang_output_section_statement.head; u; u = lookup->next)
1008 {
1009 lookup = &u->output_section_statement;
1010 if (strncmp (".rel", lookup->name, 4) == 0)
1011 {
1012 /* Don't place after .rel.plt as doing so results in wrong
1013 dynamic tags. Also, place allocated reloc sections before
1014 non-allocated. */
1015 int rela = lookup->name[4] == 'a';
1016
1017 if (strcmp (".plt", lookup->name + 4 + rela) == 0
1018 || (lookup->bfd_section != NULL
1019 && (lookup->bfd_section->flags & SEC_ALLOC) == 0))
1020 break;
1021 last_rel = lookup;
1022 if (lookup->bfd_section != NULL
1023 && (lookup->bfd_section->flags & SEC_ALLOC) != 0)
1024 last_rel_alloc = lookup;
1025 }
1026 last = lookup;
1027 }
1028
1029 if (last_rel_alloc)
1030 return last_rel_alloc;
1031
1032 if (last_rel)
1033 return last_rel;
1034
1035 return last;
1036 }
1037
1038 /* Find the last output section before given output statement.
1039 Used by place_orphan. */
1040
1041 static asection *
1042 output_prev_sec_find (os)
1043 lang_output_section_statement_type *os;
1044 {
1045 asection *s = (asection *) NULL;
1046 lang_statement_union_type *u;
1047 lang_output_section_statement_type *lookup;
1048
1049 for (u = lang_output_section_statement.head;
1050 u != (lang_statement_union_type *) NULL;
1051 u = lookup->next)
1052 {
1053 lookup = &u->output_section_statement;
1054 if (lookup == os)
1055 return s;
1056
1057 if (lookup->bfd_section != NULL && lookup->bfd_section->owner != NULL)
1058 s = lookup->bfd_section;
1059 }
1060
1061 return NULL;
1062 }
1063
1064 /* Place an orphan section. We use this to put random SHF_ALLOC
1065 sections in the right segment. */
1066
1067 struct orphan_save {
1068 lang_output_section_statement_type *os;
1069 asection **section;
1070 lang_statement_union_type **stmt;
1071 };
1072
1073 static boolean
1074 gld${EMULATION_NAME}_place_orphan (file, s)
1075 lang_input_statement_type *file;
1076 asection *s;
1077 {
1078 static struct orphan_save hold_text;
1079 static struct orphan_save hold_rodata;
1080 static struct orphan_save hold_data;
1081 static struct orphan_save hold_bss;
1082 static struct orphan_save hold_rel;
1083 static struct orphan_save hold_interp;
1084 static struct orphan_save hold_sdata;
1085 static int count = 1;
1086 struct orphan_save *place;
1087 lang_statement_list_type *old;
1088 lang_statement_list_type add;
1089 etree_type *address;
1090 const char *secname;
1091 const char *outsecname;
1092 const char *ps = NULL;
1093 lang_output_section_statement_type *os;
1094
1095 secname = bfd_get_section_name (s->owner, s);
1096
1097 if (! config.unique_orphan_sections && ! unique_section_p (secname))
1098 {
1099 /* Look through the script to see where to place this section. */
1100 os = lang_output_section_find (secname);
1101
1102 if (os != NULL
1103 && (os->bfd_section == NULL
1104 || ((s->flags ^ os->bfd_section->flags)
1105 & (SEC_LOAD | SEC_ALLOC)) == 0))
1106 {
1107 /* We already have an output section statement with this
1108 name, and its bfd section, if any, has compatible flags. */
1109 lang_add_section (&os->children, s, os, file);
1110 return true;
1111 }
1112 }
1113
1114 if (hold_text.os == NULL)
1115 hold_text.os = lang_output_section_find (".text");
1116
1117 /* If this is a final link, then always put .gnu.warning.SYMBOL
1118 sections into the .text section to get them out of the way. */
1119 if (! link_info.shared
1120 && ! link_info.relocateable
1121 && strncmp (secname, ".gnu.warning.", sizeof ".gnu.warning." - 1) == 0
1122 && hold_text.os != NULL)
1123 {
1124 lang_add_section (&hold_text.os->children, s, hold_text.os, file);
1125 return true;
1126 }
1127
1128 /* Decide which segment the section should go in based on the
1129 section name and section flags. We put loadable .note sections
1130 right after the .interp section, so that the PT_NOTE segment is
1131 stored right after the program headers where the OS can read it
1132 in the first page. */
1133 #define HAVE_SECTION(hold, name) \
1134 (hold.os != NULL || (hold.os = lang_output_section_find (name)) != NULL)
1135
1136 if ((s->flags & SEC_EXCLUDE) != 0 && !link_info.relocateable)
1137 {
1138 if (s->output_section == NULL)
1139 s->output_section = bfd_abs_section_ptr;
1140 return true;
1141 }
1142
1143 place = NULL;
1144 if ((s->flags & SEC_ALLOC) == 0)
1145 ;
1146 else if ((s->flags & SEC_LOAD) != 0
1147 && strncmp (secname, ".note", 5) == 0
1148 && HAVE_SECTION (hold_interp, ".interp"))
1149 place = &hold_interp;
1150 else if ((s->flags & SEC_HAS_CONTENTS) == 0
1151 && HAVE_SECTION (hold_bss, ".bss"))
1152 place = &hold_bss;
1153 else if ((s->flags & SEC_SMALL_DATA) != 0
1154 && HAVE_SECTION (hold_sdata, ".sdata"))
1155 place = &hold_sdata;
1156 else if ((s->flags & SEC_READONLY) == 0
1157 && HAVE_SECTION (hold_data, ".data"))
1158 place = &hold_data;
1159 else if (strncmp (secname, ".rel", 4) == 0
1160 && (s->flags & SEC_LOAD) != 0
1161 && (hold_rel.os != NULL
1162 || (hold_rel.os = output_rel_find ()) != NULL))
1163 place = &hold_rel;
1164 else if ((s->flags & (SEC_CODE | SEC_READONLY)) == SEC_READONLY
1165 && HAVE_SECTION (hold_rodata, ".rodata"))
1166 place = &hold_rodata;
1167 else if ((s->flags & (SEC_CODE | SEC_READONLY)) == (SEC_CODE | SEC_READONLY)
1168 && hold_text.os != NULL)
1169 place = &hold_text;
1170
1171 #undef HAVE_SECTION
1172
1173 /* Choose a unique name for the section. This will be needed if the
1174 same section name appears in the input file with different
1175 loadable or allocatable characteristics. */
1176 outsecname = secname;
1177 if (bfd_get_section_by_name (output_bfd, outsecname) != NULL)
1178 {
1179 outsecname = bfd_get_unique_section_name (output_bfd,
1180 outsecname,
1181 &count);
1182 if (outsecname == NULL)
1183 einfo ("%F%P: place_orphan failed: %E\n");
1184 }
1185
1186 /* Start building a list of statements for this section.
1187 First save the current statement pointer. */
1188 old = stat_ptr;
1189
1190 /* If we have found an appropriate place for the output section
1191 statements for this orphan, add them to our own private list,
1192 inserting them later into the global statement list. */
1193 if (place != NULL)
1194 {
1195 stat_ptr = &add;
1196 lang_list_init (stat_ptr);
1197 }
1198
1199 if (config.build_constructors)
1200 {
1201 /* If the name of the section is representable in C, then create
1202 symbols to mark the start and the end of the section. */
1203 for (ps = outsecname; *ps != '\0'; ps++)
1204 if (! ISALNUM (*ps) && *ps != '_')
1205 break;
1206 if (*ps == '\0')
1207 {
1208 char *symname;
1209 etree_type *e_align;
1210
1211 symname = (char *) xmalloc (ps - outsecname + sizeof "__start_");
1212 sprintf (symname, "__start_%s", outsecname);
1213 e_align = exp_unop (ALIGN_K,
1214 exp_intop ((bfd_vma) 1 << s->alignment_power));
1215 lang_add_assignment (exp_assop ('=', symname, e_align));
1216 }
1217 }
1218
1219 if (link_info.relocateable || (s->flags & (SEC_LOAD | SEC_ALLOC)) == 0)
1220 address = exp_intop ((bfd_vma) 0);
1221 else
1222 address = NULL;
1223
1224 os = lang_enter_output_section_statement (outsecname, address, 0,
1225 (bfd_vma) 0,
1226 (etree_type *) NULL,
1227 (etree_type *) NULL,
1228 (etree_type *) NULL);
1229
1230 lang_add_section (&os->children, s, os, file);
1231
1232 lang_leave_output_section_statement
1233 ((bfd_vma) 0, "*default*",
1234 (struct lang_output_section_phdr_list *) NULL, NULL);
1235
1236 if (config.build_constructors && *ps == '\0')
1237 {
1238 char *symname;
1239
1240 /* lang_leave_ouput_section_statement resets stat_ptr. Put
1241 stat_ptr back where we want it. */
1242 if (place != NULL)
1243 stat_ptr = &add;
1244
1245 symname = (char *) xmalloc (ps - outsecname + sizeof "__stop_");
1246 sprintf (symname, "__stop_%s", outsecname);
1247 lang_add_assignment (exp_assop ('=', symname,
1248 exp_nameop (NAME, ".")));
1249 }
1250
1251 /* Restore the global list pointer. */
1252 stat_ptr = old;
1253
1254 if (place != NULL && os->bfd_section != NULL)
1255 {
1256 asection *snew, **pps;
1257
1258 snew = os->bfd_section;
1259
1260 /* Shuffle the bfd section list to make the output file look
1261 neater. This is really only cosmetic. */
1262 if (place->section == NULL)
1263 {
1264 asection *bfd_section = place->os->bfd_section;
1265
1266 /* If the output statement hasn't been used to place
1267 any input sections (and thus doesn't have an output
1268 bfd_section), look for the closest prior output statement
1269 having an output section. */
1270 if (bfd_section == NULL)
1271 bfd_section = output_prev_sec_find (place->os);
1272
1273 if (bfd_section != NULL && bfd_section != snew)
1274 place->section = &bfd_section->next;
1275 }
1276
1277 if (place->section != NULL)
1278 {
1279 /* Unlink the section. */
1280 for (pps = &output_bfd->sections; *pps != snew; pps = &(*pps)->next)
1281 ;
1282 bfd_section_list_remove (output_bfd, pps);
1283
1284 /* Now tack it on to the "place->os" section list. */
1285 bfd_section_list_insert (output_bfd, place->section, snew);
1286 }
1287
1288 /* Save the end of this list. Further ophans of this type will
1289 follow the one we've just added. */
1290 place->section = &snew->next;
1291
1292 /* The following is non-cosmetic. We try to put the output
1293 statements in some sort of reasonable order here, because
1294 they determine the final load addresses of the orphan
1295 sections. In addition, placing output statements in the
1296 wrong order may require extra segments. For instance,
1297 given a typical situation of all read-only sections placed
1298 in one segment and following that a segment containing all
1299 the read-write sections, we wouldn't want to place an orphan
1300 read/write section before or amongst the read-only ones. */
1301 if (add.head != NULL)
1302 {
1303 if (place->stmt == NULL)
1304 {
1305 /* Put the new statement list right at the head. */
1306 *add.tail = place->os->header.next;
1307 place->os->header.next = add.head;
1308 }
1309 else
1310 {
1311 /* Put it after the last orphan statement we added. */
1312 *add.tail = *place->stmt;
1313 *place->stmt = add.head;
1314 }
1315
1316 /* Fix the global list pointer if we happened to tack our
1317 new list at the tail. */
1318 if (*old->tail == add.head)
1319 old->tail = add.tail;
1320
1321 /* Save the end of this list. */
1322 place->stmt = add.tail;
1323 }
1324 }
1325
1326 return true;
1327 }
1328 EOF
1329 fi
1330
1331 if test x"$LDEMUL_FINISH" != xgld"$EMULATION_NAME"_finish; then
1332 cat >>e${EMULATION_NAME}.c <<EOF
1333
1334 static void
1335 gld${EMULATION_NAME}_finish ()
1336 {
1337 if (bfd_elf${ELFSIZE}_discard_info (output_bfd, &link_info))
1338 {
1339 lang_reset_memory_regions ();
1340
1341 /* Resize the sections. */
1342 lang_size_sections (stat_ptr->head, abs_output_section,
1343 &stat_ptr->head, 0, (bfd_vma) 0, NULL);
1344
1345 /* Redo special stuff. */
1346 ldemul_after_allocation ();
1347
1348 /* Do the assignments again. */
1349 lang_do_assignments (stat_ptr->head, abs_output_section,
1350 (fill_type *) 0, (bfd_vma) 0);
1351 }
1352 }
1353 EOF
1354 fi
1355
1356 if test x"$LDEMUL_GET_SCRIPT" != xgld"$EMULATION_NAME"_get_script; then
1357 cat >>e${EMULATION_NAME}.c <<EOF
1358
1359 static char *
1360 gld${EMULATION_NAME}_get_script (isfile)
1361 int *isfile;
1362 EOF
1363
1364 if test -n "$COMPILE_IN"
1365 then
1366 # Scripts compiled in.
1367
1368 # sed commands to quote an ld script as a C string.
1369 sc="-f stringify.sed"
1370
1371 cat >>e${EMULATION_NAME}.c <<EOF
1372 {
1373 *isfile = 0;
1374
1375 if (link_info.relocateable == true && config.build_constructors == true)
1376 return
1377 EOF
1378 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1379 echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c
1380 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
1381 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
1382 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
1383 if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then : ; else
1384 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
1385 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
1386 fi
1387 if test -n "$GENERATE_SHLIB_SCRIPT" ; then
1388 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1389 echo ' ; else if (link_info.shared && link_info.combreloc) return' >> e${EMULATION_NAME}.c
1390 sed $sc ldscripts/${EMULATION_NAME}.xsc >> e${EMULATION_NAME}.c
1391 fi
1392 echo ' ; else if (link_info.shared) return' >> e${EMULATION_NAME}.c
1393 sed $sc ldscripts/${EMULATION_NAME}.xs >> e${EMULATION_NAME}.c
1394 fi
1395 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1396 echo ' ; else if (link_info.combreloc) return' >> e${EMULATION_NAME}.c
1397 sed $sc ldscripts/${EMULATION_NAME}.xc >> e${EMULATION_NAME}.c
1398 fi
1399 echo ' ; else return' >> e${EMULATION_NAME}.c
1400 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
1401 echo '; }' >> e${EMULATION_NAME}.c
1402
1403 else
1404 # Scripts read from the filesystem.
1405
1406 cat >>e${EMULATION_NAME}.c <<EOF
1407 {
1408 *isfile = 1;
1409
1410 if (link_info.relocateable == true && config.build_constructors == true)
1411 return "ldscripts/${EMULATION_NAME}.xu";
1412 else if (link_info.relocateable == true)
1413 return "ldscripts/${EMULATION_NAME}.xr";
1414 else if (!config.text_read_only)
1415 return "ldscripts/${EMULATION_NAME}.xbn";
1416 else if (!config.magic_demand_paged)
1417 return "ldscripts/${EMULATION_NAME}.xn";
1418 else if (link_info.shared)
1419 return "ldscripts/${EMULATION_NAME}.xs";
1420 else
1421 return "ldscripts/${EMULATION_NAME}.x";
1422 }
1423
1424 EOF
1425 fi
1426 fi
1427
1428 if test -n "$PARSE_AND_LIST_ARGS_CASES" -o x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1429
1430 if test x"$LDEMUL_PARSE_ARGS" != xgld"$EMULATION_NAME"_parse_args; then
1431
1432 if test -n "$PARSE_AND_LIST_PROLOGUE" ; then
1433 cat >>e${EMULATION_NAME}.c <<EOF
1434 $PARSE_AND_LIST_PROLOGUE
1435 EOF
1436 fi
1437
1438 cat >>e${EMULATION_NAME}.c <<EOF
1439
1440 #include "getopt.h"
1441
1442 #define OPTION_DISABLE_NEW_DTAGS (400)
1443 #define OPTION_ENABLE_NEW_DTAGS (OPTION_DISABLE_NEW_DTAGS + 1)
1444 #define OPTION_GROUP (OPTION_ENABLE_NEW_DTAGS + 1)
1445 #define OPTION_EH_FRAME_HDR (OPTION_GROUP + 1)
1446
1447 static struct option longopts[] =
1448 {
1449 EOF
1450
1451 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1452 cat >>e${EMULATION_NAME}.c <<EOF
1453 /* getopt allows abbreviations, so we do this to stop it from
1454 treating -d/-e as abbreviations for these options. */
1455 {"disable-new-dtags", no_argument, NULL, OPTION_DISABLE_NEW_DTAGS},
1456 {"disable-new-dtags", no_argument, NULL, OPTION_DISABLE_NEW_DTAGS},
1457 {"enable-new-dtags", no_argument, NULL, OPTION_ENABLE_NEW_DTAGS},
1458 {"enable-new-dtags", no_argument, NULL, OPTION_ENABLE_NEW_DTAGS},
1459 {"eh-frame-hdr", no_argument, NULL, OPTION_EH_FRAME_HDR},
1460 {"Bgroup", no_argument, NULL, OPTION_GROUP},
1461 {"Bgroup", no_argument, NULL, OPTION_GROUP},
1462 EOF
1463 fi
1464
1465 if test -n "$PARSE_AND_LIST_LONGOPTS" ; then
1466 cat >>e${EMULATION_NAME}.c <<EOF
1467 $PARSE_AND_LIST_LONGOPTS
1468 EOF
1469 fi
1470
1471 cat >>e${EMULATION_NAME}.c <<EOF
1472 {NULL, no_argument, NULL, 0}
1473 };
1474
1475
1476 static int gld${EMULATION_NAME}_parse_args PARAMS ((int, char **));
1477
1478 static int
1479 gld${EMULATION_NAME}_parse_args (argc, argv)
1480 int argc;
1481 char ** argv;
1482 {
1483 int longind;
1484 int optc;
1485 static int prevoptind = -1;
1486 int prevopterr = opterr;
1487 int wanterror;
1488
1489 if (prevoptind != optind)
1490 opterr = 0;
1491
1492 wanterror = opterr;
1493 prevoptind = optind;
1494
1495 optc = getopt_long_only (argc, argv,
1496 "-${PARSE_AND_LIST_SHORTOPTS}z:", longopts,
1497 &longind);
1498 opterr = prevopterr;
1499
1500 switch (optc)
1501 {
1502 default:
1503 if (wanterror)
1504 xexit (1);
1505 optind = prevoptind;
1506 return 0;
1507
1508 EOF
1509
1510 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1511 cat >>e${EMULATION_NAME}.c <<EOF
1512 case OPTION_DISABLE_NEW_DTAGS:
1513 link_info.new_dtags = false;
1514 break;
1515
1516 case OPTION_ENABLE_NEW_DTAGS:
1517 link_info.new_dtags = true;
1518 break;
1519
1520 case OPTION_EH_FRAME_HDR:
1521 link_info.eh_frame_hdr = true;
1522 break;
1523
1524 case OPTION_GROUP:
1525 link_info.flags_1 |= (bfd_vma) DF_1_GROUP;
1526 /* Groups must be self-contained. */
1527 link_info.no_undefined = true;
1528 break;
1529
1530 case 'z':
1531 if (strcmp (optarg, "initfirst") == 0)
1532 link_info.flags_1 |= (bfd_vma) DF_1_INITFIRST;
1533 else if (strcmp (optarg, "interpose") == 0)
1534 link_info.flags_1 |= (bfd_vma) DF_1_INTERPOSE;
1535 else if (strcmp (optarg, "loadfltr") == 0)
1536 link_info.flags_1 |= (bfd_vma) DF_1_LOADFLTR;
1537 else if (strcmp (optarg, "nodefaultlib") == 0)
1538 link_info.flags_1 |= (bfd_vma) DF_1_NODEFLIB;
1539 else if (strcmp (optarg, "nodelete") == 0)
1540 link_info.flags_1 |= (bfd_vma) DF_1_NODELETE;
1541 else if (strcmp (optarg, "nodlopen") == 0)
1542 link_info.flags_1 |= (bfd_vma) DF_1_NOOPEN;
1543 else if (strcmp (optarg, "nodump") == 0)
1544 link_info.flags_1 |= (bfd_vma) DF_1_NODUMP;
1545 else if (strcmp (optarg, "now") == 0)
1546 {
1547 link_info.flags |= (bfd_vma) DF_BIND_NOW;
1548 link_info.flags_1 |= (bfd_vma) DF_1_NOW;
1549 }
1550 else if (strcmp (optarg, "origin") == 0)
1551 {
1552 link_info.flags |= (bfd_vma) DF_ORIGIN;
1553 link_info.flags_1 |= (bfd_vma) DF_1_ORIGIN;
1554 }
1555 else if (strcmp (optarg, "defs") == 0)
1556 link_info.no_undefined = true;
1557 else if (strcmp (optarg, "muldefs") == 0)
1558 link_info.allow_multiple_definition = true;
1559 else if (strcmp (optarg, "combreloc") == 0)
1560 link_info.combreloc = true;
1561 else if (strcmp (optarg, "nocombreloc") == 0)
1562 link_info.combreloc = false;
1563 else if (strcmp (optarg, "nocopyreloc") == 0)
1564 link_info.nocopyreloc = true;
1565 /* What about the other Solaris -z options? FIXME. */
1566 break;
1567 EOF
1568 fi
1569
1570 if test -n "$PARSE_AND_LIST_ARGS_CASES" ; then
1571 cat >>e${EMULATION_NAME}.c <<EOF
1572 $PARSE_AND_LIST_ARGS_CASES
1573 EOF
1574 fi
1575
1576 cat >>e${EMULATION_NAME}.c <<EOF
1577 }
1578
1579 return 1;
1580 }
1581
1582 EOF
1583 fi
1584
1585 if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
1586 cat >>e${EMULATION_NAME}.c <<EOF
1587
1588 static void gld${EMULATION_NAME}_list_options PARAMS ((FILE * file));
1589
1590 static void
1591 gld${EMULATION_NAME}_list_options (file)
1592 FILE * file;
1593 {
1594 EOF
1595
1596 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1597 cat >>e${EMULATION_NAME}.c <<EOF
1598 fprintf (file, _(" -Bgroup\t\tSelects group name lookup rules for DSO\n"));
1599 fprintf (file, _(" --disable-new-dtags\tDisable new dynamic tags\n"));
1600 fprintf (file, _(" --enable-new-dtags\tEnable new dynamic tags\n"));
1601 fprintf (file, _(" --eh-frame-hdr\tCreate .eh_frame_hdr section\n"));
1602 fprintf (file, _(" -z combreloc\t\tMerge dynamic relocs into one section and sort\n"));
1603 fprintf (file, _(" -z defs\t\tDisallows undefined symbols\n"));
1604 fprintf (file, _(" -z initfirst\t\tMark DSO to be initialized first at runtime\n"));
1605 fprintf (file, _(" -z interpose\t\tMark object to interpose all DSOs but executable\n"));
1606 fprintf (file, _(" -z loadfltr\t\tMark object requiring immediate process\n"));
1607 fprintf (file, _(" -z muldefs\t\tAllow multiple definitions\n"));
1608 fprintf (file, _(" -z nocombreloc\tDon't merge dynamic relocs into one section\n"));
1609 fprintf (file, _(" -z nocopyreloc\tDon't create copy relocs\n"));
1610 fprintf (file, _(" -z nodefaultlib\tMark object not to use default search paths\n"));
1611 fprintf (file, _(" -z nodelete\t\tMark DSO non-deletable at runtime\n"));
1612 fprintf (file, _(" -z nodlopen\t\tMark DSO not available to dlopen\n"));
1613 fprintf (file, _(" -z nodump\t\tMark DSO not available to dldump\n"));
1614 fprintf (file, _(" -z now\t\tMark object non-lazy runtime binding\n"));
1615 fprintf (file, _(" -z origin\t\tMark object requiring immediate \$ORIGIN processing\n\t\t\t at runtime\n"));
1616 fprintf (file, _(" -z KEYWORD\t\tIgnored for Solaris compatibility\n"));
1617 EOF
1618 fi
1619
1620 if test -n "$PARSE_AND_LIST_OPTIONS" ; then
1621 cat >>e${EMULATION_NAME}.c <<EOF
1622 $PARSE_AND_LIST_OPTIONS
1623 EOF
1624 fi
1625
1626 cat >>e${EMULATION_NAME}.c <<EOF
1627 }
1628 EOF
1629
1630 if test -n "$PARSE_AND_LIST_EPILOGUE" ; then
1631 cat >>e${EMULATION_NAME}.c <<EOF
1632 $PARSE_AND_LIST_EPILOGUE
1633 EOF
1634 fi
1635 fi
1636 else
1637 if test x"$LDEMUL_PARSE_ARGS" != xgld"$EMULATION_NAME"_parse_args; then
1638 cat >>e${EMULATION_NAME}.c <<EOF
1639 #define gld${EMULATION_NAME}_parse_args NULL
1640 EOF
1641 fi
1642 if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
1643 cat >>e${EMULATION_NAME}.c <<EOF
1644 #define gld${EMULATION_NAME}_list_options NULL
1645 EOF
1646 fi
1647 fi
1648
1649 cat >>e${EMULATION_NAME}.c <<EOF
1650
1651 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
1652 {
1653 ${LDEMUL_BEFORE_PARSE-gld${EMULATION_NAME}_before_parse},
1654 ${LDEMUL_SYSLIB-syslib_default},
1655 ${LDEMUL_HLL-hll_default},
1656 ${LDEMUL_AFTER_PARSE-after_parse_default},
1657 ${LDEMUL_AFTER_OPEN-gld${EMULATION_NAME}_after_open},
1658 ${LDEMUL_AFTER_ALLOCATION-after_allocation_default},
1659 ${LDEMUL_SET_OUTPUT_ARCH-set_output_arch_default},
1660 ${LDEMUL_CHOOSE_TARGET-ldemul_default_target},
1661 ${LDEMUL_BEFORE_ALLOCATION-gld${EMULATION_NAME}_before_allocation},
1662 ${LDEMUL_GET_SCRIPT-gld${EMULATION_NAME}_get_script},
1663 "${EMULATION_NAME}",
1664 "${OUTPUT_FORMAT}",
1665 ${LDEMUL_FINISH-gld${EMULATION_NAME}_finish},
1666 ${LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS-NULL},
1667 ${LDEMUL_OPEN_DYNAMIC_ARCHIVE-gld${EMULATION_NAME}_open_dynamic_archive},
1668 ${LDEMUL_PLACE_ORPHAN-gld${EMULATION_NAME}_place_orphan},
1669 ${LDEMUL_SET_SYMBOLS-NULL},
1670 ${LDEMUL_PARSE_ARGS-gld${EMULATION_NAME}_parse_args},
1671 ${LDEMUL_UNRECOGNIZED_FILE-NULL},
1672 ${LDEMUL_LIST_OPTIONS-gld${EMULATION_NAME}_list_options},
1673 ${LDEMUL_RECOGNIZED_FILE-NULL},
1674 ${LDEMUL_FIND_POTENTIAL_LIBRARIES-NULL},
1675 ${LDEMUL_NEW_VERS_PATTERN-NULL}
1676 };
1677 EOF
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