1 # This shell script emits a C file. -*- C -*-
2 # It does some substitutions.
4 cat >e${EMULATION_NAME}.c <<EOF
5 /* This file is is generated by a shell script. DO NOT EDIT! */
7 /* emulate the original gld for the given ${EMULATION_NAME}
8 Copyright (C) 1991, 93, 96, 97, 98, 1999 Free Software Foundation, Inc.
9 Written by Steve Chamberlain steve@cygnus.com
11 This file is part of GLD, the Gnu Linker.
13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 2 of the License, or
16 (at your option) any later version.
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
23 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
27 #define TARGET_IS_${EMULATION_NAME}
44 static boolean gld${EMULATION_NAME}_open_dynamic_archive
45 PARAMS ((const char *, search_dirs_type *, lang_input_statement_type *));
46 static void gld${EMULATION_NAME}_after_open PARAMS ((void));
47 static void gld${EMULATION_NAME}_check_needed
48 PARAMS ((lang_input_statement_type *));
49 static void gld${EMULATION_NAME}_stat_needed
50 PARAMS ((lang_input_statement_type *));
51 static boolean gld${EMULATION_NAME}_search_needed
52 PARAMS ((const char *, const char *, int));
53 static boolean gld${EMULATION_NAME}_try_needed PARAMS ((const char *, int));
54 static void gld${EMULATION_NAME}_vercheck
55 PARAMS ((lang_input_statement_type *));
56 static void gld${EMULATION_NAME}_find_statement_assignment
57 PARAMS ((lang_statement_union_type *));
58 static void gld${EMULATION_NAME}_find_exp_assignment PARAMS ((etree_type *));
59 static boolean gld${EMULATION_NAME}_place_orphan
60 PARAMS ((lang_input_statement_type *, asection *));
61 static void gld${EMULATION_NAME}_place_section
62 PARAMS ((lang_statement_union_type *));
63 static void gld${EMULATION_NAME}_before_parse PARAMS ((void));
64 static void gld${EMULATION_NAME}_before_allocation PARAMS ((void));
65 static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile));
66 static int gld${EMULATION_NAME}_parse_args PARAMS((int, char **));
67 static void gld${EMULATION_NAME}_list_options PARAMS ((FILE *));
70 static int no_pipeline_knowledge = 0;
72 static struct option longopts[] =
74 { "no-pipeline-knowledge", no_argument, NULL, 'p'},
75 { NULL, no_argument, NULL, 0 }
79 gld${EMULATION_NAME}_list_options (file)
82 fprintf (file, _(" -p --no-pipeline-knowledge Stop the linker knowing about the pipeline length\n"));
86 gld${EMULATION_NAME}_parse_args (argc, argv)
92 int prevoptind = optind;
93 int prevopterr = opterr;
95 static int lastoptind = -1;
97 if (lastoptind != optind)
103 optc = getopt_long_only (argc, argv, "-p", longopts, & longind);
115 no_pipeline_knowledge = 1;
124 gld${EMULATION_NAME}_before_parse ()
126 #ifndef TARGET_ /* I.e., if not generic. */
127 ldfile_set_output_arch ("`echo ${ARCH}`");
128 #endif /* not TARGET_ */
129 config.dynamic_link = ${DYNAMIC_LINK-true};
130 config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo true ; else echo false ; fi`;
133 /* Try to open a dynamic archive. This is where we know that ELF
134 dynamic libraries have an extension of .so. */
137 gld${EMULATION_NAME}_open_dynamic_archive (arch, search, entry)
139 search_dirs_type *search;
140 lang_input_statement_type *entry;
142 const char *filename;
145 if (! entry->is_archive)
148 filename = entry->filename;
150 string = (char *) xmalloc (strlen (search->name)
155 sprintf (string, "%s/lib%s%s.so", search->name, filename, arch);
157 if (! ldfile_try_open_bfd (string, entry))
163 entry->filename = string;
165 /* We have found a dynamic object to include in the link. The ELF
166 backend linker will create a DT_NEEDED entry in the .dynamic
167 section naming this file. If this file includes a DT_SONAME
168 entry, it will be used. Otherwise, the ELF linker will just use
169 the name of the file. For an archive found by searching, like
170 this one, the DT_NEEDED entry should consist of just the name of
171 the file, without the path information used to find it. Note
172 that we only need to do this if we have a dynamic object; an
173 archive will never be referenced by a DT_NEEDED entry.
175 FIXME: This approach--using bfd_elf_set_dt_needed_name--is not
176 very pretty. I haven't been able to think of anything that is
178 if (bfd_check_format (entry->the_bfd, bfd_object)
179 && (entry->the_bfd->flags & DYNAMIC) != 0)
183 ASSERT (entry->is_archive && entry->search_dirs_flag);
184 needed_name = (char *) xmalloc (strlen (filename)
187 sprintf (needed_name, "lib%s%s.so", filename, arch);
188 bfd_elf_set_dt_needed_name (entry->the_bfd, needed_name);
195 if [ "x${host}" = "x${target}" ] ; then
196 case " ${EMULATION_LIBPATH} " in
197 *" ${EMULATION_NAME} "*)
198 cat >>e${EMULATION_NAME}.c <<EOF
200 /* For a native linker, check the file /etc/ld.so.conf for directories
201 in which we may find shared libraries. /etc/ld.so.conf is really
202 only meaningful on Linux, but we check it on other systems anyhow. */
204 static boolean gld${EMULATION_NAME}_check_ld_so_conf
205 PARAMS ((const char *, int));
208 gld${EMULATION_NAME}_check_ld_so_conf (name, force)
212 static boolean initialized;
213 static char *ld_so_conf;
219 f = fopen ("/etc/ld.so.conf", FOPEN_RT);
228 b = (char *) xmalloc (alloc);
230 while ((c = getc (f)) != EOF)
232 if (len + 1 >= alloc)
235 b = (char *) xrealloc (b, alloc);
248 if (len > 0 && b[len - 1] != ':')
256 if (len > 0 && b[len - 1] == ':')
275 if (ld_so_conf == NULL)
278 return gld${EMULATION_NAME}_search_needed (ld_so_conf, name, force);
285 cat >>e${EMULATION_NAME}.c <<EOF
287 /* These variables are required to pass information back and forth
288 between after_open and check_needed and stat_needed and vercheck. */
290 static struct bfd_link_needed_list *global_needed;
291 static struct stat global_stat;
292 static boolean global_found;
293 static struct bfd_link_needed_list *global_vercheck_needed;
294 static boolean global_vercheck_failed;
297 gld${EMULATION_NAME}_after_open ()
299 struct bfd_link_needed_list *needed, *l;
301 LANG_FOR_EACH_INPUT_STATEMENT (is)
303 /* The interworking bfd must be the last one to be processed */
305 bfd_elf32_arm_get_bfd_for_interworking (is->the_bfd, & link_info);
308 /* We only need to worry about this when doing a final link. */
309 if (link_info.relocateable || link_info.shared)
312 /* Get the list of files which appear in DT_NEEDED entries in
313 dynamic objects included in the link (often there will be none).
314 For each such file, we want to track down the corresponding
315 library, and include the symbol table in the link. This is what
316 the runtime dynamic linker will do. Tracking the files down here
317 permits one dynamic object to include another without requiring
318 special action by the person doing the link. Note that the
319 needed list can actually grow while we are stepping through this
321 needed = bfd_elf_get_needed_list (output_bfd, &link_info);
322 for (l = needed; l != NULL; l = l->next)
324 struct bfd_link_needed_list *ll;
327 /* If we've already seen this file, skip it. */
328 for (ll = needed; ll != l; ll = ll->next)
329 if (strcmp (ll->name, l->name) == 0)
334 /* See if this file was included in the link explicitly. */
336 global_found = false;
337 lang_for_each_input_file (gld${EMULATION_NAME}_check_needed);
341 /* We need to find this file and include the symbol table. We
342 want to search for the file in the same way that the dynamic
343 linker will search. That means that we want to use
344 rpath_link, rpath, then the environment variable
345 LD_LIBRARY_PATH (native only), then the linker script
346 LIB_SEARCH_DIRS. We do not search using the -L arguments.
348 We search twice. The first time, we skip objects which may
349 introduce version mismatches. The second time, we force
350 their use. See gld${EMULATION_NAME}_vercheck comment. */
351 for (force = 0; force < 2; force++)
353 const char *lib_path;
355 search_dirs_type *search;
357 if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link,
360 if (gld${EMULATION_NAME}_search_needed (command_line.rpath,
363 if (command_line.rpath_link == NULL
364 && command_line.rpath == NULL)
366 lib_path = (const char *) getenv ("LD_RUN_PATH");
367 if (gld${EMULATION_NAME}_search_needed (lib_path, l->name,
372 if [ "x${host}" = "x${target}" ] ; then
373 case " ${EMULATION_LIBPATH} " in
374 *" ${EMULATION_NAME} "*)
375 cat >>e${EMULATION_NAME}.c <<EOF
376 lib_path = (const char *) getenv ("LD_LIBRARY_PATH");
377 if (gld${EMULATION_NAME}_search_needed (lib_path, l->name, force))
383 cat >>e${EMULATION_NAME}.c <<EOF
384 len = strlen (l->name);
385 for (search = search_head; search != NULL; search = search->next)
391 filename = (char *) xmalloc (strlen (search->name) + len + 2);
392 sprintf (filename, "%s/%s", search->name, l->name);
393 if (gld${EMULATION_NAME}_try_needed (filename, force))
400 if [ "x${host}" = "x${target}" ] ; then
401 case " ${EMULATION_LIBPATH} " in
402 *" ${EMULATION_NAME} "*)
403 cat >>e${EMULATION_NAME}.c <<EOF
404 if (gld${EMULATION_NAME}_check_ld_so_conf (l->name, force))
410 cat >>e${EMULATION_NAME}.c <<EOF
416 einfo ("%P: warning: %s, needed by %B, not found (try using --rpath)\n",
421 /* Search for a needed file in a path. */
424 gld${EMULATION_NAME}_search_needed (path, name, force)
432 if (path == NULL || *path == '\0')
437 char *filename, *sset;
439 s = strchr (path, ':');
441 s = path + strlen (path);
443 filename = (char *) xmalloc (s - path + len + 2);
448 memcpy (filename, path, s - path);
449 filename[s - path] = '/';
450 sset = filename + (s - path) + 1;
454 if (gld${EMULATION_NAME}_try_needed (filename, force))
467 /* This function is called for each possible name for a dynamic object
468 named by a DT_NEEDED entry. The FORCE parameter indicates whether
469 to skip the check for a conflicting version. */
472 gld${EMULATION_NAME}_try_needed (name, force)
478 abfd = bfd_openr (name, bfd_get_target (output_bfd));
481 if (! bfd_check_format (abfd, bfd_object))
483 (void) bfd_close (abfd);
486 if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0)
488 (void) bfd_close (abfd);
492 /* Check whether this object would include any conflicting library
493 versions. If FORCE is set, then we skip this check; we use this
494 the second time around, if we couldn't find any compatible
495 instance of the shared library. */
499 struct bfd_link_needed_list *needed;
501 if (! bfd_elf_get_bfd_needed_list (abfd, &needed))
502 einfo ("%F%P:%B: bfd_elf_get_bfd_needed_list failed: %E\n", abfd);
506 global_vercheck_needed = needed;
507 global_vercheck_failed = false;
508 lang_for_each_input_file (gld${EMULATION_NAME}_vercheck);
509 if (global_vercheck_failed)
511 (void) bfd_close (abfd);
512 /* Return false to force the caller to move on to try
513 another file on the search path. */
517 /* But wait! It gets much worse. On Linux, if a shared
518 library does not use libc at all, we are supposed to skip
519 it the first time around in case we encounter a shared
520 library later on with the same name which does use the
521 version of libc that we want. This is much too horrible
522 to use on any system other than Linux. */
527 cat >>e${EMULATION_NAME}.c <<EOF
529 struct bfd_link_needed_list *l;
531 for (l = needed; l != NULL; l = l->next)
532 if (strncmp (l->name, "libc.so", 7) == 0)
536 (void) bfd_close (abfd);
544 cat >>e${EMULATION_NAME}.c <<EOF
548 /* We've found a dynamic object matching the DT_NEEDED entry. */
550 /* We have already checked that there is no other input file of the
551 same name. We must now check again that we are not including the
552 same file twice. We need to do this because on many systems
553 libc.so is a symlink to, e.g., libc.so.1. The SONAME entry will
554 reference libc.so.1. If we have already included libc.so, we
555 don't want to include libc.so.1 if they are the same file, and we
556 can only check that using stat. */
558 if (bfd_stat (abfd, &global_stat) != 0)
559 einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd);
560 global_found = false;
561 lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed);
564 /* Return true to indicate that we found the file, even though
565 we aren't going to do anything with it. */
569 /* Tell the ELF backend that don't want the output file to have a
570 DT_NEEDED entry for this file. */
571 bfd_elf_set_dt_needed_name (abfd, "");
573 /* Add this file into the symbol table. */
574 if (! bfd_link_add_symbols (abfd, &link_info))
575 einfo ("%F%B: could not read symbols: %E\n", abfd);
580 /* See if an input file matches a DT_NEEDED entry by name. */
583 gld${EMULATION_NAME}_check_needed (s)
584 lang_input_statement_type *s;
589 if (s->filename != NULL
590 && strcmp (s->filename, global_needed->name) == 0)
596 if (s->the_bfd != NULL)
600 soname = bfd_elf_get_dt_soname (s->the_bfd);
602 && strcmp (soname, global_needed->name) == 0)
609 if (s->search_dirs_flag
610 && s->filename != NULL
611 && strchr (global_needed->name, '/') == NULL)
615 f = strrchr (s->filename, '/');
617 && strcmp (f + 1, global_needed->name) == 0)
625 /* See if an input file matches a DT_NEEDED entry by running stat on
629 gld${EMULATION_NAME}_stat_needed (s)
630 lang_input_statement_type *s;
639 if (s->the_bfd == NULL)
642 if (bfd_stat (s->the_bfd, &st) != 0)
644 einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd);
648 if (st.st_dev == global_stat.st_dev
649 && st.st_ino == global_stat.st_ino)
655 /* We issue a warning if it looks like we are including two
656 different versions of the same shared library. For example,
657 there may be a problem if -lc picks up libc.so.6 but some other
658 shared library has a DT_NEEDED entry of libc.so.5. This is a
659 hueristic test, and it will only work if the name looks like
660 NAME.so.VERSION. FIXME: Depending on file names is error-prone.
661 If we really want to issue warnings about mixing version numbers
662 of shared libraries, we need to find a better way. */
664 if (strchr (global_needed->name, '/') != NULL)
666 suffix = strstr (global_needed->name, ".so.");
669 suffix += sizeof ".so." - 1;
671 soname = bfd_elf_get_dt_soname (s->the_bfd);
673 soname = s->filename;
675 f = strrchr (soname, '/');
681 if (strncmp (f, global_needed->name, suffix - global_needed->name) == 0)
682 einfo ("%P: warning: %s, needed by %B, may conflict with %s\n",
683 global_needed->name, global_needed->by, f);
686 /* On Linux, it's possible to have different versions of the same
687 shared library linked against different versions of libc. The
688 dynamic linker somehow tags which libc version to use in
689 /etc/ld.so.cache, and, based on the libc that it sees in the
690 executable, chooses which version of the shared library to use.
692 We try to do a similar check here by checking whether this shared
693 library needs any other shared libraries which may conflict with
694 libraries we have already included in the link. If it does, we
695 skip it, and try to find another shared library farther on down the
698 This is called via lang_for_each_input_file.
699 GLOBAL_VERCHECK_NEEDED is the list of objects needed by the object
700 which we ar checking. This sets GLOBAL_VERCHECK_FAILED if we find
701 a conflicting version. */
704 gld${EMULATION_NAME}_vercheck (s)
705 lang_input_statement_type *s;
707 const char *soname, *f;
708 struct bfd_link_needed_list *l;
710 if (global_vercheck_failed)
712 if (s->the_bfd == NULL
713 || (bfd_get_file_flags (s->the_bfd) & DYNAMIC) == 0)
716 soname = bfd_elf_get_dt_soname (s->the_bfd);
718 soname = bfd_get_filename (s->the_bfd);
720 f = strrchr (soname, '/');
726 for (l = global_vercheck_needed; l != NULL; l = l->next)
730 if (strcmp (f, l->name) == 0)
732 /* Probably can't happen, but it's an easy check. */
736 if (strchr (l->name, '/') != NULL)
739 suffix = strstr (l->name, ".so.");
743 suffix += sizeof ".so." - 1;
745 if (strncmp (f, l->name, suffix - l->name) == 0)
747 /* Here we know that S is a dynamic object FOO.SO.VER1, and
748 the object we are considering needs a dynamic object
749 FOO.SO.VER2, and VER1 and VER2 are different. This
750 appears to be a version mismatch, so we tell the caller
751 to try a different version of this library. */
752 global_vercheck_failed = true;
758 /* Place an orphan section. We use this to put random SHF_ALLOC
759 sections in the right segment. */
761 static asection *hold_section;
762 static lang_output_section_statement_type *hold_use;
763 static lang_output_section_statement_type *hold_text;
764 static lang_output_section_statement_type *hold_rodata;
765 static lang_output_section_statement_type *hold_data;
766 static lang_output_section_statement_type *hold_bss;
767 static lang_output_section_statement_type *hold_rel;
768 static lang_output_section_statement_type *hold_interp;
772 gld${EMULATION_NAME}_place_orphan (file, s)
773 lang_input_statement_type *file;
776 lang_output_section_statement_type *place;
777 asection *snew, **pps;
778 lang_statement_list_type *old;
779 lang_statement_list_type add;
781 const char *secname, *ps;
782 const char *outsecname;
783 lang_output_section_statement_type *os;
785 if ((s->flags & SEC_ALLOC) == 0)
788 /* Look through the script to see where to place this section. */
791 lang_for_each_statement (gld${EMULATION_NAME}_place_section);
793 if (hold_use != NULL)
795 /* We have already placed a section with this name. */
796 wild_doit (&hold_use->children, s, hold_use, file);
800 secname = bfd_get_section_name (s->owner, s);
802 /* If this is a final link, then always put .gnu.warning.SYMBOL
803 sections into the .text section to get them out of the way. */
804 if (! link_info.shared
805 && ! link_info.relocateable
806 && strncmp (secname, ".gnu.warning.", sizeof ".gnu.warning." - 1) == 0
807 && hold_text != NULL)
809 wild_doit (&hold_text->children, s, hold_text, file);
813 /* Decide which segment the section should go in based on the
814 section name and section flags. We put loadable .note sections
815 right after the .interp section, so that the PT_NOTE segment is
816 stored right after the program headers where the OS can read it
817 in the first page. */
819 if (s->flags & SEC_EXCLUDE)
821 else if ((s->flags & SEC_LOAD) != 0
822 && strncmp (secname, ".note", 4) == 0
823 && hold_interp != NULL)
825 else if ((s->flags & SEC_HAS_CONTENTS) == 0
828 else if ((s->flags & SEC_READONLY) == 0
829 && hold_data != NULL)
831 else if (strncmp (secname, ".rel", 4) == 0
834 else if ((s->flags & SEC_CODE) == 0
835 && (s->flags & SEC_READONLY) != 0
836 && hold_rodata != NULL)
838 else if ((s->flags & SEC_READONLY) != 0
839 && hold_text != NULL)
844 /* Choose a unique name for the section. This will be needed if the
845 same section name appears in the input file with different
846 loadable or allocateable characteristics. */
847 outsecname = secname;
848 if (bfd_get_section_by_name (output_bfd, outsecname) != NULL)
854 len = strlen (outsecname);
855 newname = xmalloc (len + 5);
856 strcpy (newname, outsecname);
860 sprintf (newname + len, "%d", i);
863 while (bfd_get_section_by_name (output_bfd, newname) != NULL);
865 outsecname = newname;
868 /* Create the section in the output file, and put it in the right
869 place. This shuffling is to make the output file look neater. */
870 snew = bfd_make_section (output_bfd, outsecname);
872 einfo ("%P%F: output format %s cannot represent section called %s\n",
873 output_bfd->xvec->name, outsecname);
874 if (place->bfd_section != NULL)
876 for (pps = &output_bfd->sections; *pps != snew; pps = &(*pps)->next)
879 snew->next = place->bfd_section->next;
880 place->bfd_section->next = snew;
883 /* Start building a list of statements for this section. */
886 lang_list_init (stat_ptr);
888 /* If the name of the section is representable in C, then create
889 symbols to mark the start and the end of the section. */
890 for (ps = outsecname; *ps != '\0'; ps++)
891 if (! isalnum ((unsigned char) *ps) && *ps != '_')
893 if (*ps == '\0' && config.build_constructors)
897 symname = (char *) xmalloc (ps - outsecname + sizeof "__start_");
898 sprintf (symname, "__start_%s", outsecname);
899 lang_add_assignment (exp_assop ('=', symname,
901 exp_intop ((bfd_vma) 1
902 << s->alignment_power))));
905 if (! link_info.relocateable)
908 address = exp_intop ((bfd_vma) 0);
910 lang_enter_output_section_statement (outsecname, address, 0,
914 (etree_type *) NULL);
916 os = lang_output_section_statement_lookup (outsecname);
917 wild_doit (&os->children, s, os, file);
919 lang_leave_output_section_statement
920 ((bfd_vma) 0, "*default*", (struct lang_output_section_phdr_list *) NULL);
923 if (*ps == '\0' && config.build_constructors)
927 symname = (char *) xmalloc (ps - outsecname + sizeof "__stop_");
928 sprintf (symname, "__stop_%s", outsecname);
929 lang_add_assignment (exp_assop ('=', symname,
930 exp_nameop (NAME, ".")));
933 /* Now stick the new statement list right after PLACE. */
934 *add.tail = place->header.next;
935 place->header.next = add.head;
943 gld${EMULATION_NAME}_place_section (s)
944 lang_statement_union_type *s;
946 lang_output_section_statement_type *os;
948 if (s->header.type != lang_output_section_statement_enum)
951 os = &s->output_section_statement;
953 if (strcmp (os->name, hold_section->name) == 0
954 && os->bfd_section != NULL
955 && ((hold_section->flags & (SEC_LOAD | SEC_ALLOC))
956 == (os->bfd_section->flags & (SEC_LOAD | SEC_ALLOC))))
959 if (strcmp (os->name, ".text") == 0)
961 else if (strcmp (os->name, ".rodata") == 0)
963 else if (strcmp (os->name, ".data") == 0)
965 else if (strcmp (os->name, ".bss") == 0)
967 else if (hold_rel == NULL
968 && os->bfd_section != NULL
969 && (os->bfd_section->flags & SEC_ALLOC) != 0
970 && strncmp (os->name, ".rel", 4) == 0)
972 else if (strcmp (os->name, ".interp") == 0)
976 /* Look through an expression for an assignment statement. */
979 gld${EMULATION_NAME}_find_exp_assignment (exp)
982 struct bfd_link_hash_entry *h;
984 switch (exp->type.node_class)
987 h = bfd_link_hash_lookup (link_info.hash, exp->assign.dst,
988 false, false, false);
992 /* We call record_link_assignment even if the symbol is defined.
993 This is because if it is defined by a dynamic object, we
994 actually want to use the value defined by the linker script,
995 not the value from the dynamic object (because we are setting
996 symbols like etext). If the symbol is defined by a regular
997 object, then, as it happens, calling record_link_assignment
1002 if (strcmp (exp->assign.dst, ".") != 0)
1004 if (! (bfd_elf${ELFSIZE}_record_link_assignment
1005 (output_bfd, &link_info, exp->assign.dst,
1006 exp->type.node_class == etree_provide ? true : false)))
1007 einfo ("%P%F: failed to record assignment to %s: %E\n",
1010 gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src);
1014 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs);
1015 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs);
1019 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond);
1020 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs);
1021 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs);
1025 gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child);
1033 /* This is called by the before_allocation routine via
1034 lang_for_each_statement. It locates any assignment statements, and
1035 tells the ELF backend about them, in case they are assignments to
1036 symbols which are referred to by dynamic objects. */
1039 gld${EMULATION_NAME}_find_statement_assignment (s)
1040 lang_statement_union_type *s;
1042 if (s->header.type == lang_assignment_statement_enum)
1043 gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp);
1046 /* This is called after the sections have been attached to output
1047 sections, but before any sizes or addresses have been set. */
1050 gld${EMULATION_NAME}_before_allocation ()
1055 /* If we are going to make any variable assignments, we need to let
1056 the ELF backend know about them in case the variables are
1057 referred to by dynamic objects. */
1058 lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment);
1060 /* Let the ELF backend work out the sizes of any sections required
1061 by dynamic linking. */
1062 rpath = command_line.rpath;
1064 rpath = (const char *) getenv ("LD_RUN_PATH");
1065 if (! (bfd_elf${ELFSIZE}_size_dynamic_sections
1066 (output_bfd, command_line.soname, rpath,
1067 command_line.export_dynamic, command_line.filter_shlib,
1068 (const char * const *) command_line.auxiliary_filters,
1069 &link_info, &sinterp, lang_elf_version_info)))
1070 einfo ("%P%F: failed to set dynamic section sizes: %E\n");
1072 /* Let the user override the dynamic linker we are using. */
1073 if (command_line.interpreter != NULL
1076 sinterp->contents = (bfd_byte *) command_line.interpreter;
1077 sinterp->_raw_size = strlen (command_line.interpreter) + 1;
1080 /* Look for any sections named .gnu.warning. As a GNU extensions,
1081 we treat such sections as containing warning messages. We print
1082 out the warning message, and then zero out the section size so
1083 that it does not get copied into the output file. */
1086 LANG_FOR_EACH_INPUT_STATEMENT (is)
1093 if (is->just_syms_flag)
1096 s = bfd_get_section_by_name (is->the_bfd, ".gnu.warning");
1100 sz = bfd_section_size (is->the_bfd, s);
1101 msg = xmalloc ((size_t) sz + 1);
1102 if (! bfd_get_section_contents (is->the_bfd, s, msg, (file_ptr) 0, sz))
1103 einfo ("%F%B: Can't read contents of section .gnu.warning: %E\n",
1106 ret = link_info.callbacks->warning (&link_info, msg,
1107 (const char *) NULL,
1108 is->the_bfd, (asection *) NULL,
1113 /* Clobber the section size, so that we don't waste copying the
1114 warning into the output file. */
1119 /* we should be able to set the size of the interworking stub section */
1121 /* Here we rummage through the found bfds to collect glue information */
1122 /* FIXME: should this be based on a command line option? krk@cygnus.com */
1124 LANG_FOR_EACH_INPUT_STATEMENT (is)
1126 if (!bfd_elf32_arm_process_before_allocation (is->the_bfd, & link_info,
1127 no_pipeline_knowledge))
1129 /* xgettext:c-format */
1130 einfo (_("Errors encountered processing file %s"), is->filename);
1135 /* We have seen it all. Allocate it, and carry on */
1136 bfd_elf32_arm_allocate_interworking_sections (& link_info);
1140 gld${EMULATION_NAME}_get_script (isfile)
1144 if test -n "$COMPILE_IN"
1146 # Scripts compiled in.
1148 # sed commands to quote an ld script as a C string.
1149 sc="-f ${srcdir}/emultempl/stringify.sed"
1151 cat >>e${EMULATION_NAME}.c <<EOF
1155 if (link_info.relocateable == true && config.build_constructors == true)
1158 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1159 echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c
1160 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
1161 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
1162 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
1163 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
1164 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
1165 echo ' ; else return' >> e${EMULATION_NAME}.c
1166 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
1167 echo '; }' >> e${EMULATION_NAME}.c
1170 # Scripts read from the filesystem.
1172 cat >>e${EMULATION_NAME}.c <<EOF
1176 if (link_info.relocateable == true && config.build_constructors == true)
1177 return "ldscripts/${EMULATION_NAME}.xu";
1178 else if (link_info.relocateable == true)
1179 return "ldscripts/${EMULATION_NAME}.xr";
1180 else if (!config.text_read_only)
1181 return "ldscripts/${EMULATION_NAME}.xbn";
1182 else if (!config.magic_demand_paged)
1183 return "ldscripts/${EMULATION_NAME}.xn";
1185 return "ldscripts/${EMULATION_NAME}.x";
1191 cat >>e${EMULATION_NAME}.c <<EOF
1193 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
1195 gld${EMULATION_NAME}_before_parse,
1198 after_parse_default,
1199 gld${EMULATION_NAME}_after_open,
1200 after_allocation_default,
1201 set_output_arch_default,
1202 ldemul_default_target,
1203 gld${EMULATION_NAME}_before_allocation,
1204 gld${EMULATION_NAME}_get_script,
1205 "${EMULATION_NAME}",
1208 NULL, /* create output section statements */
1209 gld${EMULATION_NAME}_open_dynamic_archive,
1210 gld${EMULATION_NAME}_place_orphan,
1211 NULL, /* set_symbols */
1212 gld${EMULATION_NAME}_parse_args,
1213 NULL, /* unrecognised file */
1214 gld${EMULATION_NAME}_list_options,
1215 NULL /* recognized file */