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
5 test -z "${ELFSIZE}" && ELFSIZE=32
6 cat >e${EMULATION_NAME}.c <<EOF
7 /* This file is is generated by a shell script. DO NOT EDIT! */
9 /* ${ELFSIZE} bit ELF emulation code for ${EMULATION_NAME}
10 Copyright (C) 1991, 93, 94, 95, 96, 97, 98, 99, 2000, 2001
11 Free Software Foundation, Inc.
12 Written by Steve Chamberlain <sac@cygnus.com>
13 ELF support by Ian Lance Taylor <ian@cygnus.com>
15 This file is part of GLD, the Gnu Linker.
17 This program is free software; you can redistribute it and/or modify
18 it under the terms of the GNU General Public License as published by
19 the Free Software Foundation; either version 2 of the License, or
20 (at your option) any later version.
22 This program is distributed in the hope that it will be useful,
23 but WITHOUT ANY WARRANTY; without even the implied warranty of
24 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 GNU General Public License for more details.
27 You should have received a copy of the GNU General Public License
28 along with this program; if not, write to the Free Software
29 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
31 #define TARGET_IS_${EMULATION_NAME}
48 #include "elf/common.h"
50 static void gld${EMULATION_NAME}_before_parse PARAMS ((void));
51 static void gld${EMULATION_NAME}_vercheck
52 PARAMS ((lang_input_statement_type *));
53 static void gld${EMULATION_NAME}_stat_needed
54 PARAMS ((lang_input_statement_type *));
55 static boolean gld${EMULATION_NAME}_try_needed PARAMS ((const char *, int));
56 static boolean gld${EMULATION_NAME}_search_needed
57 PARAMS ((const char *, const char *, int));
58 static void gld${EMULATION_NAME}_check_needed
59 PARAMS ((lang_input_statement_type *));
60 static void gld${EMULATION_NAME}_after_open PARAMS ((void));
61 static void gld${EMULATION_NAME}_find_exp_assignment PARAMS ((etree_type *));
62 static void gld${EMULATION_NAME}_find_statement_assignment
63 PARAMS ((lang_statement_union_type *));
64 static void gld${EMULATION_NAME}_before_allocation PARAMS ((void));
65 static boolean gld${EMULATION_NAME}_open_dynamic_archive
66 PARAMS ((const char *, search_dirs_type *, lang_input_statement_type *));
67 static lang_output_section_statement_type *output_rel_find PARAMS ((void));
68 static boolean gld${EMULATION_NAME}_place_orphan
69 PARAMS ((lang_input_statement_type *, asection *));
70 static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile));
74 # Import any needed special functions and/or overrides.
76 if test -n "$EXTRA_EM_FILE" ; then
77 . ${srcdir}/emultempl/${EXTRA_EM_FILE}.em
80 # Functions in this file can be overridden by setting the LDEMUL_* shell
81 # variables. If the name of the overriding function is the same as is
82 # defined in this file, then don't output this file's version.
83 # If a different overriding name is given then output the standard function
84 # as presumably it is called from the overriding function.
86 if test x"$LDEMUL_BEFORE_PARSE" != xgld"$EMULATION_NAME"_before_parse; then
87 cat >>e${EMULATION_NAME}.c <<EOF
90 gld${EMULATION_NAME}_before_parse ()
92 ldfile_output_architecture = bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`;
93 config.dynamic_link = ${DYNAMIC_LINK-true};
94 config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo true ; else echo false ; fi`;
100 cat >>e${EMULATION_NAME}.c <<EOF
102 /* These variables are required to pass information back and forth
103 between after_open and check_needed and stat_needed and vercheck. */
105 static struct bfd_link_needed_list *global_needed;
106 static struct stat global_stat;
107 static boolean global_found;
108 static struct bfd_link_needed_list *global_vercheck_needed;
109 static boolean global_vercheck_failed;
112 /* On Linux, it's possible to have different versions of the same
113 shared library linked against different versions of libc. The
114 dynamic linker somehow tags which libc version to use in
115 /etc/ld.so.cache, and, based on the libc that it sees in the
116 executable, chooses which version of the shared library to use.
118 We try to do a similar check here by checking whether this shared
119 library needs any other shared libraries which may conflict with
120 libraries we have already included in the link. If it does, we
121 skip it, and try to find another shared library farther on down the
124 This is called via lang_for_each_input_file.
125 GLOBAL_VERCHECK_NEEDED is the list of objects needed by the object
126 which we are checking. This sets GLOBAL_VERCHECK_FAILED if we find
127 a conflicting version. */
130 gld${EMULATION_NAME}_vercheck (s)
131 lang_input_statement_type *s;
133 const char *soname, *f;
134 struct bfd_link_needed_list *l;
136 if (global_vercheck_failed)
138 if (s->the_bfd == NULL
139 || (bfd_get_file_flags (s->the_bfd) & DYNAMIC) == 0)
142 soname = bfd_elf_get_dt_soname (s->the_bfd);
144 soname = bfd_get_filename (s->the_bfd);
146 f = strrchr (soname, '/');
152 for (l = global_vercheck_needed; l != NULL; l = l->next)
156 if (strcmp (f, l->name) == 0)
158 /* Probably can't happen, but it's an easy check. */
162 if (strchr (l->name, '/') != NULL)
165 suffix = strstr (l->name, ".so.");
169 suffix += sizeof ".so." - 1;
171 if (strncmp (f, l->name, suffix - l->name) == 0)
173 /* Here we know that S is a dynamic object FOO.SO.VER1, and
174 the object we are considering needs a dynamic object
175 FOO.SO.VER2, and VER1 and VER2 are different. This
176 appears to be a version mismatch, so we tell the caller
177 to try a different version of this library. */
178 global_vercheck_failed = true;
185 /* See if an input file matches a DT_NEEDED entry by running stat on
189 gld${EMULATION_NAME}_stat_needed (s)
190 lang_input_statement_type *s;
199 if (s->the_bfd == NULL)
202 if (bfd_stat (s->the_bfd, &st) != 0)
204 einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd);
208 if (st.st_dev == global_stat.st_dev
209 && st.st_ino == global_stat.st_ino)
215 /* We issue a warning if it looks like we are including two
216 different versions of the same shared library. For example,
217 there may be a problem if -lc picks up libc.so.6 but some other
218 shared library has a DT_NEEDED entry of libc.so.5. This is a
219 heuristic test, and it will only work if the name looks like
220 NAME.so.VERSION. FIXME: Depending on file names is error-prone.
221 If we really want to issue warnings about mixing version numbers
222 of shared libraries, we need to find a better way. */
224 if (strchr (global_needed->name, '/') != NULL)
226 suffix = strstr (global_needed->name, ".so.");
229 suffix += sizeof ".so." - 1;
231 soname = bfd_elf_get_dt_soname (s->the_bfd);
233 soname = s->filename;
235 f = strrchr (soname, '/');
241 if (strncmp (f, global_needed->name, suffix - global_needed->name) == 0)
242 einfo ("%P: warning: %s, needed by %B, may conflict with %s\n",
243 global_needed->name, global_needed->by, f);
247 /* This function is called for each possible name for a dynamic object
248 named by a DT_NEEDED entry. The FORCE parameter indicates whether
249 to skip the check for a conflicting version. */
252 gld${EMULATION_NAME}_try_needed (name, force)
259 abfd = bfd_openr (name, bfd_get_target (output_bfd));
262 if (! bfd_check_format (abfd, bfd_object))
264 (void) bfd_close (abfd);
267 if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0)
269 (void) bfd_close (abfd);
273 /* Check whether this object would include any conflicting library
274 versions. If FORCE is set, then we skip this check; we use this
275 the second time around, if we couldn't find any compatible
276 instance of the shared library. */
280 struct bfd_link_needed_list *needed;
282 if (! bfd_elf_get_bfd_needed_list (abfd, &needed))
283 einfo ("%F%P:%B: bfd_elf_get_bfd_needed_list failed: %E\n", abfd);
287 global_vercheck_needed = needed;
288 global_vercheck_failed = false;
289 lang_for_each_input_file (gld${EMULATION_NAME}_vercheck);
290 if (global_vercheck_failed)
292 (void) bfd_close (abfd);
293 /* Return false to force the caller to move on to try
294 another file on the search path. */
298 /* But wait! It gets much worse. On Linux, if a shared
299 library does not use libc at all, we are supposed to skip
300 it the first time around in case we encounter a shared
301 library later on with the same name which does use the
302 version of libc that we want. This is much too horrible
303 to use on any system other than Linux. */
308 cat >>e${EMULATION_NAME}.c <<EOF
310 struct bfd_link_needed_list *l;
312 for (l = needed; l != NULL; l = l->next)
313 if (strncmp (l->name, "libc.so", 7) == 0)
317 (void) bfd_close (abfd);
325 cat >>e${EMULATION_NAME}.c <<EOF
329 /* We've found a dynamic object matching the DT_NEEDED entry. */
331 /* We have already checked that there is no other input file of the
332 same name. We must now check again that we are not including the
333 same file twice. We need to do this because on many systems
334 libc.so is a symlink to, e.g., libc.so.1. The SONAME entry will
335 reference libc.so.1. If we have already included libc.so, we
336 don't want to include libc.so.1 if they are the same file, and we
337 can only check that using stat. */
339 if (bfd_stat (abfd, &global_stat) != 0)
340 einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd);
342 /* First strip off everything before the last '/'. */
343 soname = strrchr (abfd->filename, '/');
347 soname = abfd->filename;
349 if (trace_file_tries)
350 info_msg (_("found %s at %s\n"), soname, name);
352 global_found = false;
353 lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed);
356 /* Return true to indicate that we found the file, even though
357 we aren't going to do anything with it. */
361 /* Tell the ELF backend that we don't want the output file to have a
362 DT_NEEDED entry for this file. */
363 bfd_elf_set_dt_needed_name (abfd, "");
365 /* Tell the ELF backend that the output file needs a DT_NEEDED
366 entry for this file if it is used to resolve the reference in
368 bfd_elf_set_dt_needed_soname (abfd, soname);
370 /* Add this file into the symbol table. */
371 if (! bfd_link_add_symbols (abfd, &link_info))
372 einfo ("%F%B: could not read symbols: %E\n", abfd);
378 /* Search for a needed file in a path. */
381 gld${EMULATION_NAME}_search_needed (path, name, force)
389 if (path == NULL || *path == '\0')
394 char *filename, *sset;
396 s = strchr (path, ':');
398 s = path + strlen (path);
400 filename = (char *) xmalloc (s - path + len + 2);
405 memcpy (filename, path, s - path);
406 filename[s - path] = '/';
407 sset = filename + (s - path) + 1;
411 if (gld${EMULATION_NAME}_try_needed (filename, force))
425 if [ "x${host}" = "x${target}" ] ; then
426 case " ${EMULATION_LIBPATH} " in
427 *" ${EMULATION_NAME} "*)
430 cat >>e${EMULATION_NAME}.c <<EOF
432 /* For a native linker, check the file /etc/ld.so.conf for directories
433 in which we may find shared libraries. /etc/ld.so.conf is really
434 only meaningful on Linux. */
436 static boolean gld${EMULATION_NAME}_check_ld_so_conf
437 PARAMS ((const char *, int));
440 gld${EMULATION_NAME}_check_ld_so_conf (name, force)
444 static boolean initialized;
445 static char *ld_so_conf;
451 f = fopen ("/etc/ld.so.conf", FOPEN_RT);
460 b = (char *) xmalloc (alloc);
462 while ((c = getc (f)) != EOF)
464 if (len + 1 >= alloc)
467 b = (char *) xrealloc (b, alloc);
480 if (len > 0 && b[len - 1] != ':')
488 if (len > 0 && b[len - 1] == ':')
507 if (ld_so_conf == NULL)
510 return gld${EMULATION_NAME}_search_needed (ld_so_conf, name, force);
519 cat >>e${EMULATION_NAME}.c <<EOF
521 /* See if an input file matches a DT_NEEDED entry by name. */
524 gld${EMULATION_NAME}_check_needed (s)
525 lang_input_statement_type *s;
530 if (s->filename != NULL)
534 if (strcmp (s->filename, global_needed->name) == 0)
540 if (s->search_dirs_flag)
542 f = strrchr (s->filename, '/');
544 && strcmp (f + 1, global_needed->name) == 0)
552 if (s->the_bfd != NULL)
556 soname = bfd_elf_get_dt_soname (s->the_bfd);
558 && strcmp (soname, global_needed->name) == 0)
568 if test x"$LDEMUL_AFTER_OPEN" != xgld"$EMULATION_NAME"_after_open; then
569 cat >>e${EMULATION_NAME}.c <<EOF
571 /* This is called after all the input files have been opened. */
574 gld${EMULATION_NAME}_after_open ()
576 struct bfd_link_needed_list *needed, *l;
578 /* We only need to worry about this when doing a final link. */
579 if (link_info.relocateable || link_info.shared)
582 /* Get the list of files which appear in DT_NEEDED entries in
583 dynamic objects included in the link (often there will be none).
584 For each such file, we want to track down the corresponding
585 library, and include the symbol table in the link. This is what
586 the runtime dynamic linker will do. Tracking the files down here
587 permits one dynamic object to include another without requiring
588 special action by the person doing the link. Note that the
589 needed list can actually grow while we are stepping through this
591 needed = bfd_elf_get_needed_list (output_bfd, &link_info);
592 for (l = needed; l != NULL; l = l->next)
594 struct bfd_link_needed_list *ll;
597 /* If we've already seen this file, skip it. */
598 for (ll = needed; ll != l; ll = ll->next)
599 if (strcmp (ll->name, l->name) == 0)
604 /* See if this file was included in the link explicitly. */
606 global_found = false;
607 lang_for_each_input_file (gld${EMULATION_NAME}_check_needed);
611 if (trace_file_tries)
612 info_msg (_("%s needed by %B\n"), l->name, l->by);
614 /* We need to find this file and include the symbol table. We
615 want to search for the file in the same way that the dynamic
616 linker will search. That means that we want to use
617 rpath_link, rpath, then the environment variable
618 LD_LIBRARY_PATH (native only), then the DT_RPATH/DT_RUNPATH
619 entries (native only), then the linker script LIB_SEARCH_DIRS.
620 We do not search using the -L arguments.
622 We search twice. The first time, we skip objects which may
623 introduce version mismatches. The second time, we force
624 their use. See gld${EMULATION_NAME}_vercheck comment. */
625 for (force = 0; force < 2; force++)
628 search_dirs_type *search;
630 if [ "x${host}" = "x${target}" ] ; then
631 case " ${EMULATION_LIBPATH} " in
632 *" ${EMULATION_NAME} "*)
633 cat >>e${EMULATION_NAME}.c <<EOF
634 const char *lib_path;
635 struct bfd_link_needed_list *rp;
641 cat >>e${EMULATION_NAME}.c <<EOF
643 if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link,
647 if [ "x${host}" = "x${target}" ] ; then
648 case " ${EMULATION_LIBPATH} " in
649 *" ${EMULATION_NAME} "*)
650 cat >>e${EMULATION_NAME}.c <<EOF
651 if (gld${EMULATION_NAME}_search_needed (command_line.rpath,
654 if (command_line.rpath_link == NULL
655 && command_line.rpath == NULL)
657 lib_path = (const char *) getenv ("LD_RUN_PATH");
658 if (gld${EMULATION_NAME}_search_needed (lib_path, l->name,
662 lib_path = (const char *) getenv ("LD_LIBRARY_PATH");
663 if (gld${EMULATION_NAME}_search_needed (lib_path, l->name, force))
667 rp = bfd_elf_get_runpath_list (output_bfd, &link_info);
668 for (; !found && rp != NULL; rp = rp->next)
670 found = (rp->by == l->by
671 && gld${EMULATION_NAME}_search_needed (rp->name,
682 cat >>e${EMULATION_NAME}.c <<EOF
683 len = strlen (l->name);
684 for (search = search_head; search != NULL; search = search->next)
690 filename = (char *) xmalloc (strlen (search->name) + len + 2);
691 sprintf (filename, "%s/%s", search->name, l->name);
692 if (gld${EMULATION_NAME}_try_needed (filename, force))
699 if [ "x${host}" = "x${target}" ] ; then
700 case " ${EMULATION_LIBPATH} " in
701 *" ${EMULATION_NAME} "*)
704 cat >>e${EMULATION_NAME}.c <<EOF
705 if (gld${EMULATION_NAME}_check_ld_so_conf (l->name, force))
714 cat >>e${EMULATION_NAME}.c <<EOF
720 einfo ("%P: warning: %s, needed by %B, not found (try using -rpath or -rpath-link)\n",
728 cat >>e${EMULATION_NAME}.c <<EOF
730 /* Look through an expression for an assignment statement. */
733 gld${EMULATION_NAME}_find_exp_assignment (exp)
736 struct bfd_link_hash_entry *h;
738 switch (exp->type.node_class)
741 h = bfd_link_hash_lookup (link_info.hash, exp->assign.dst,
742 false, false, false);
746 /* We call record_link_assignment even if the symbol is defined.
747 This is because if it is defined by a dynamic object, we
748 actually want to use the value defined by the linker script,
749 not the value from the dynamic object (because we are setting
750 symbols like etext). If the symbol is defined by a regular
751 object, then, as it happens, calling record_link_assignment
756 if (strcmp (exp->assign.dst, ".") != 0)
758 if (! (bfd_elf${ELFSIZE}_record_link_assignment
759 (output_bfd, &link_info, exp->assign.dst,
760 exp->type.node_class == etree_provide ? true : false)))
761 einfo ("%P%F: failed to record assignment to %s: %E\n",
764 gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src);
768 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs);
769 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs);
773 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond);
774 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs);
775 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs);
779 gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child);
788 /* This is called by the before_allocation routine via
789 lang_for_each_statement. It locates any assignment statements, and
790 tells the ELF backend about them, in case they are assignments to
791 symbols which are referred to by dynamic objects. */
794 gld${EMULATION_NAME}_find_statement_assignment (s)
795 lang_statement_union_type *s;
797 if (s->header.type == lang_assignment_statement_enum)
798 gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp);
803 if test x"$LDEMUL_BEFORE_ALLOCATION" != xgld"$EMULATION_NAME"_before_allocation; then
804 cat >>e${EMULATION_NAME}.c <<EOF
806 /* This is called after the sections have been attached to output
807 sections, but before any sizes or addresses have been set. */
810 gld${EMULATION_NAME}_before_allocation ()
815 /* If we are going to make any variable assignments, we need to let
816 the ELF backend know about them in case the variables are
817 referred to by dynamic objects. */
818 lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment);
820 /* Let the ELF backend work out the sizes of any sections required
821 by dynamic linking. */
822 rpath = command_line.rpath;
824 rpath = (const char *) getenv ("LD_RUN_PATH");
825 if (! (bfd_elf${ELFSIZE}_size_dynamic_sections
826 (output_bfd, command_line.soname, rpath,
827 command_line.export_dynamic, command_line.filter_shlib,
828 (const char * const *) command_line.auxiliary_filters,
829 &link_info, &sinterp, lang_elf_version_info)))
830 einfo ("%P%F: failed to set dynamic section sizes: %E\n");
832 /* Let the user override the dynamic linker we are using. */
833 if (command_line.interpreter != NULL
836 sinterp->contents = (bfd_byte *) command_line.interpreter;
837 sinterp->_raw_size = strlen (command_line.interpreter) + 1;
840 /* Look for any sections named .gnu.warning. As a GNU extensions,
841 we treat such sections as containing warning messages. We print
842 out the warning message, and then zero out the section size so
843 that it does not get copied into the output file. */
846 LANG_FOR_EACH_INPUT_STATEMENT (is)
853 if (is->just_syms_flag)
856 s = bfd_get_section_by_name (is->the_bfd, ".gnu.warning");
860 sz = bfd_section_size (is->the_bfd, s);
861 msg = xmalloc ((size_t) sz + 1);
862 if (! bfd_get_section_contents (is->the_bfd, s, msg, (file_ptr) 0, sz))
863 einfo ("%F%B: Can't read contents of section .gnu.warning: %E\n",
866 ret = link_info.callbacks->warning (&link_info, msg,
868 is->the_bfd, (asection *) NULL,
873 /* Clobber the section size, so that we don't waste copying the
874 warning into the output file. */
883 if test x"$LDEMUL_OPEN_DYNAMIC_ARCHIVE" != xgld"$EMULATION_NAME"_open_dynamic_archive; then
884 cat >>e${EMULATION_NAME}.c <<EOF
886 /* Try to open a dynamic archive. This is where we know that ELF
887 dynamic libraries have an extension of .so (or .sl on oddball systems
891 gld${EMULATION_NAME}_open_dynamic_archive (arch, search, entry)
893 search_dirs_type *search;
894 lang_input_statement_type *entry;
896 const char *filename;
899 if (! entry->is_archive)
902 filename = entry->filename;
904 /* This allocates a few bytes too many when EXTRA_SHLIB_EXTENSION
905 is defined, but it does not seem worth the headache to optimize
906 away those two bytes of space. */
907 string = (char *) xmalloc (strlen (search->name)
910 #ifdef EXTRA_SHLIB_EXTENSION
911 + strlen (EXTRA_SHLIB_EXTENSION)
915 sprintf (string, "%s/lib%s%s.so", search->name, filename, arch);
917 #ifdef EXTRA_SHLIB_EXTENSION
918 /* Try the .so extension first. If that fails build a new filename
919 using EXTRA_SHLIB_EXTENSION. */
920 if (! ldfile_try_open_bfd (string, entry))
921 sprintf (string, "%s/lib%s%s%s", search->name,
922 filename, arch, EXTRA_SHLIB_EXTENSION);
925 if (! ldfile_try_open_bfd (string, entry))
931 entry->filename = string;
933 /* We have found a dynamic object to include in the link. The ELF
934 backend linker will create a DT_NEEDED entry in the .dynamic
935 section naming this file. If this file includes a DT_SONAME
936 entry, it will be used. Otherwise, the ELF linker will just use
937 the name of the file. For an archive found by searching, like
938 this one, the DT_NEEDED entry should consist of just the name of
939 the file, without the path information used to find it. Note
940 that we only need to do this if we have a dynamic object; an
941 archive will never be referenced by a DT_NEEDED entry.
943 FIXME: This approach--using bfd_elf_set_dt_needed_name--is not
944 very pretty. I haven't been able to think of anything that is
946 if (bfd_check_format (entry->the_bfd, bfd_object)
947 && (entry->the_bfd->flags & DYNAMIC) != 0)
951 ASSERT (entry->is_archive && entry->search_dirs_flag);
953 /* Rather than duplicating the logic above. Just use the
954 filename we recorded earlier.
956 First strip off everything before the last '/'. */
957 filename = strrchr (entry->filename, '/');
960 needed_name = (char *) xmalloc (strlen (filename) + 1);
961 strcpy (needed_name, filename);
962 bfd_elf_set_dt_needed_name (entry->the_bfd, needed_name);
970 cat >>e${EMULATION_NAME}.c <<EOF
972 /* A variant of lang_output_section_find. Used by place_orphan. */
974 static lang_output_section_statement_type *
977 lang_statement_union_type *u;
978 lang_output_section_statement_type *lookup;
980 for (u = lang_output_section_statement.head;
981 u != (lang_statement_union_type *) NULL;
984 lookup = &u->output_section_statement;
985 if (strncmp (".rel", lookup->name, 4) == 0
986 && lookup->bfd_section != NULL
987 && (lookup->bfd_section->flags & SEC_ALLOC) != 0)
992 return (lang_output_section_statement_type *) NULL;
997 if test x"$LDEMUL_PLACE_ORPHAN" != xgld"$EMULATION_NAME"_place_orphan; then
998 cat >>e${EMULATION_NAME}.c <<EOF
1000 /* Place an orphan section. We use this to put random SHF_ALLOC
1001 sections in the right segment. */
1003 struct orphan_save {
1004 lang_output_section_statement_type *os;
1006 lang_statement_union_type **stmt;
1010 gld${EMULATION_NAME}_place_orphan (file, s)
1011 lang_input_statement_type *file;
1014 static struct orphan_save hold_text;
1015 static struct orphan_save hold_rodata;
1016 static struct orphan_save hold_data;
1017 static struct orphan_save hold_bss;
1018 static struct orphan_save hold_rel;
1019 static struct orphan_save hold_interp;
1020 static struct orphan_save hold_sdata;
1021 static int count = 1;
1022 struct orphan_save *place;
1023 lang_statement_list_type *old;
1024 lang_statement_list_type add;
1025 etree_type *address;
1026 const char *secname;
1027 const char *outsecname;
1028 const char *ps = NULL;
1029 lang_output_section_statement_type *os;
1031 secname = bfd_get_section_name (s->owner, s);
1033 if (! config.unique_orphan_sections && ! unique_section_p (secname))
1035 /* Look through the script to see where to place this section. */
1036 os = lang_output_section_find (secname);
1039 && os->bfd_section != NULL
1040 && ((s->flags ^ os->bfd_section->flags)
1041 & (SEC_LOAD | SEC_ALLOC)) == 0)
1043 /* We have already placed a section with this name. */
1044 wild_doit (&os->children, s, os, file);
1049 if (hold_text.os == NULL)
1050 hold_text.os = lang_output_section_find (".text");
1052 /* If this is a final link, then always put .gnu.warning.SYMBOL
1053 sections into the .text section to get them out of the way. */
1054 if (! link_info.shared
1055 && ! link_info.relocateable
1056 && strncmp (secname, ".gnu.warning.", sizeof ".gnu.warning." - 1) == 0
1057 && hold_text.os != NULL)
1059 wild_doit (&hold_text.os->children, s, hold_text.os, file);
1063 /* Decide which segment the section should go in based on the
1064 section name and section flags. We put loadable .note sections
1065 right after the .interp section, so that the PT_NOTE segment is
1066 stored right after the program headers where the OS can read it
1067 in the first page. */
1068 #define HAVE_SECTION(hold, name) \
1069 (hold.os != NULL || (hold.os = lang_output_section_find (name)) != NULL)
1071 if (s->flags & SEC_EXCLUDE)
1075 if ((s->flags & SEC_ALLOC) == 0)
1077 else if ((s->flags & SEC_LOAD) != 0
1078 && strncmp (secname, ".note", 5) == 0
1079 && HAVE_SECTION (hold_interp, ".interp"))
1080 place = &hold_interp;
1081 else if ((s->flags & SEC_HAS_CONTENTS) == 0
1082 && HAVE_SECTION (hold_bss, ".bss"))
1084 else if ((s->flags & SEC_SMALL_DATA) != 0
1085 && HAVE_SECTION (hold_sdata, ".sdata"))
1086 place = &hold_sdata;
1087 else if ((s->flags & SEC_READONLY) == 0
1088 && HAVE_SECTION (hold_data, ".data"))
1090 else if (strncmp (secname, ".rel", 4) == 0
1091 && (hold_rel.os != NULL
1092 || (hold_rel.os = output_rel_find ()) != NULL))
1094 else if ((s->flags & (SEC_CODE | SEC_READONLY)) == SEC_READONLY
1095 && HAVE_SECTION (hold_rodata, ".rodata"))
1096 place = &hold_rodata;
1097 else if ((s->flags & (SEC_CODE | SEC_READONLY)) == (SEC_CODE | SEC_READONLY)
1098 && hold_text.os != NULL)
1103 /* Choose a unique name for the section. This will be needed if the
1104 same section name appears in the input file with different
1105 loadable or allocatable characteristics. */
1106 outsecname = secname;
1107 if (bfd_get_section_by_name (output_bfd, outsecname) != NULL)
1109 outsecname = bfd_get_unique_section_name (output_bfd,
1112 if (outsecname == NULL)
1113 einfo ("%F%P: place_orphan failed: %E\n");
1116 /* Start building a list of statements for this section.
1117 First save the current statement pointer. */
1120 /* If we have found an appropriate place for the output section
1121 statements for this orphan, add them to our own private list,
1122 inserting them later into the global statement list. */
1126 lang_list_init (stat_ptr);
1129 if (config.build_constructors)
1131 /* If the name of the section is representable in C, then create
1132 symbols to mark the start and the end of the section. */
1133 for (ps = outsecname; *ps != '\0'; ps++)
1134 if (! isalnum ((unsigned char) *ps) && *ps != '_')
1139 etree_type *e_align;
1141 symname = (char *) xmalloc (ps - outsecname + sizeof "__start_");
1142 sprintf (symname, "__start_%s", outsecname);
1143 e_align = exp_unop (ALIGN_K,
1144 exp_intop ((bfd_vma) 1 << s->alignment_power));
1145 lang_add_assignment (exp_assop ('=', symname, e_align));
1149 if (link_info.relocateable || (s->flags & (SEC_LOAD | SEC_ALLOC)) == 0)
1150 address = exp_intop ((bfd_vma) 0);
1154 os = lang_enter_output_section_statement (outsecname, address, 0,
1156 (etree_type *) NULL,
1157 (etree_type *) NULL,
1158 (etree_type *) NULL);
1160 wild_doit (&os->children, s, os, file);
1162 lang_leave_output_section_statement
1163 ((bfd_vma) 0, "*default*",
1164 (struct lang_output_section_phdr_list *) NULL, "*default*");
1166 if (config.build_constructors && *ps == '\0')
1170 /* lang_leave_ouput_section_statement resets stat_ptr. Put
1171 stat_ptr back where we want it. */
1175 symname = (char *) xmalloc (ps - outsecname + sizeof "__stop_");
1176 sprintf (symname, "__stop_%s", outsecname);
1177 lang_add_assignment (exp_assop ('=', symname,
1178 exp_nameop (NAME, ".")));
1181 /* Restore the global list pointer. */
1186 asection *snew, **pps;
1188 snew = os->bfd_section;
1189 if (place->section != NULL
1190 || (place->os->bfd_section != NULL
1191 && place->os->bfd_section != snew))
1193 /* Shuffle the section to make the output file look neater.
1194 This is really only cosmetic. */
1195 if (place->section == NULL)
1198 /* Finding the end of the list is a little tricky. We
1199 make a wild stab at it by comparing section flags. */
1200 flagword first_flags = place->os->bfd_section->flags;
1201 for (pps = &place->os->bfd_section->next;
1202 *pps != NULL && (*pps)->flags == first_flags;
1203 pps = &(*pps)->next)
1205 place->section = pps;
1207 /* Put orphans after the first section on the list. */
1208 place->section = &place->os->bfd_section->next;
1212 /* Unlink the section. */
1213 for (pps = &output_bfd->sections; *pps != snew; pps = &(*pps)->next)
1217 /* Now tack it on to the "place->os" section list. */
1218 snew->next = *place->section;
1219 *place->section = snew;
1221 place->section = &snew->next; /* Save the end of this list. */
1223 if (add.head != NULL)
1225 /* We try to put the output statements in some sort of
1226 reasonable order here, because they determine the final
1227 load addresses of the orphan sections. */
1228 if (place->stmt == NULL)
1230 /* Put the new statement list right at the head. */
1231 *add.tail = place->os->header.next;
1232 place->os->header.next = add.head;
1236 /* Put it after the last orphan statement we added. */
1237 *add.tail = *place->stmt;
1238 *place->stmt = add.head;
1241 /* Fix the global list pointer if we happened to tack our
1242 new list at the tail. */
1243 if (*old->tail == add.head)
1244 old->tail = add.tail;
1246 /* Save the end of this list. */
1247 place->stmt = add.tail;
1257 if test x"$LDEMUL_GET_SCRIPT" != xgld"$EMULATION_NAME"_get_script; then
1258 cat >>e${EMULATION_NAME}.c <<EOF
1261 gld${EMULATION_NAME}_get_script (isfile)
1265 if test -n "$COMPILE_IN"
1267 # Scripts compiled in.
1269 # sed commands to quote an ld script as a C string.
1270 sc="-f stringify.sed"
1272 cat >>e${EMULATION_NAME}.c <<EOF
1276 if (link_info.relocateable == true && config.build_constructors == true)
1279 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1280 echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c
1281 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
1282 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
1283 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
1284 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
1285 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
1287 if test -n "$GENERATE_SHLIB_SCRIPT" ; then
1288 echo ' ; else if (link_info.shared) return' >> e${EMULATION_NAME}.c
1289 sed $sc ldscripts/${EMULATION_NAME}.xs >> e${EMULATION_NAME}.c
1292 echo ' ; else return' >> e${EMULATION_NAME}.c
1293 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
1294 echo '; }' >> e${EMULATION_NAME}.c
1297 # Scripts read from the filesystem.
1299 cat >>e${EMULATION_NAME}.c <<EOF
1303 if (link_info.relocateable == true && config.build_constructors == true)
1304 return "ldscripts/${EMULATION_NAME}.xu";
1305 else if (link_info.relocateable == true)
1306 return "ldscripts/${EMULATION_NAME}.xr";
1307 else if (!config.text_read_only)
1308 return "ldscripts/${EMULATION_NAME}.xbn";
1309 else if (!config.magic_demand_paged)
1310 return "ldscripts/${EMULATION_NAME}.xn";
1311 else if (link_info.shared)
1312 return "ldscripts/${EMULATION_NAME}.xs";
1314 return "ldscripts/${EMULATION_NAME}.x";
1321 if test -n "$PARSE_AND_LIST_ARGS_CASES" -o x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1323 if test x"$LDEMUL_PARSE_ARGS" != xgld"$EMULATION_NAME"_parse_args; then
1325 if test -n "$PARSE_AND_LIST_PROLOGUE" ; then
1326 cat >>e${EMULATION_NAME}.c <<EOF
1327 $PARSE_AND_LIST_PROLOGUE
1331 cat >>e${EMULATION_NAME}.c <<EOF
1335 #define OPTION_DISABLE_NEW_DTAGS (400)
1336 #define OPTION_ENABLE_NEW_DTAGS (OPTION_DISABLE_NEW_DTAGS + 1)
1338 static struct option longopts[] =
1342 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1343 cat >>e${EMULATION_NAME}.c <<EOF
1344 /* getopt allows abbreviations, so we do this to stop it from
1345 treating -d/-e as abbreviations for these options. */
1346 {"disable-new-dtags", no_argument, NULL, OPTION_DISABLE_NEW_DTAGS},
1347 {"disable-new-dtags", no_argument, NULL, OPTION_DISABLE_NEW_DTAGS},
1348 {"enable-new-dtags", no_argument, NULL, OPTION_ENABLE_NEW_DTAGS},
1349 {"enable-new-dtags", no_argument, NULL, OPTION_ENABLE_NEW_DTAGS},
1353 if test -n "$PARSE_AND_LIST_LONGOPTS" ; then
1354 cat >>e${EMULATION_NAME}.c <<EOF
1355 $PARSE_AND_LIST_LONGOPTS
1359 cat >>e${EMULATION_NAME}.c <<EOF
1360 {NULL, no_argument, NULL, 0}
1364 static int gld${EMULATION_NAME}_parse_args PARAMS ((int, char **));
1367 gld${EMULATION_NAME}_parse_args (argc, argv)
1373 static int prevoptind = -1;
1374 int prevopterr = opterr;
1377 if (prevoptind != optind)
1381 prevoptind = optind;
1383 optc = getopt_long_only (argc, argv,
1384 "-${PARSE_AND_LIST_SHORTOPTS}z:", longopts,
1386 opterr = prevopterr;
1393 optind = prevoptind;
1398 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1399 cat >>e${EMULATION_NAME}.c <<EOF
1400 case OPTION_DISABLE_NEW_DTAGS:
1401 link_info.new_dtags = false;
1404 case OPTION_ENABLE_NEW_DTAGS:
1405 link_info.new_dtags = true;
1409 if (strcmp (optarg, "initfirst") == 0)
1410 link_info.flags_1 |= (bfd_vma) DF_1_INITFIRST;
1411 else if (strcmp (optarg, "interpose") == 0)
1412 link_info.flags_1 |= (bfd_vma) DF_1_INTERPOSE;
1413 else if (strcmp (optarg, "loadfltr") == 0)
1414 link_info.flags_1 |= (bfd_vma) DF_1_LOADFLTR;
1415 else if (strcmp (optarg, "nodefaultlib") == 0)
1416 link_info.flags_1 |= (bfd_vma) DF_1_NODEFLIB;
1417 else if (strcmp (optarg, "nodelete") == 0)
1418 link_info.flags_1 |= (bfd_vma) DF_1_NODELETE;
1419 else if (strcmp (optarg, "nodlopen") == 0)
1420 link_info.flags_1 |= (bfd_vma) DF_1_NOOPEN;
1421 else if (strcmp (optarg, "nodump") == 0)
1422 link_info.flags_1 |= (bfd_vma) DF_1_NODUMP;
1423 else if (strcmp (optarg, "now") == 0)
1425 link_info.flags |= (bfd_vma) DF_BIND_NOW;
1426 link_info.flags_1 |= (bfd_vma) DF_1_NOW;
1428 else if (strcmp (optarg, "origin") == 0)
1430 link_info.flags |= (bfd_vma) DF_ORIGIN;
1431 link_info.flags_1 |= (bfd_vma) DF_1_ORIGIN;
1433 /* What about the other Solaris -z options? FIXME. */
1438 if test -n "$PARSE_AND_LIST_ARGS_CASES" ; then
1439 cat >>e${EMULATION_NAME}.c <<EOF
1440 $PARSE_AND_LIST_ARGS_CASES
1444 cat >>e${EMULATION_NAME}.c <<EOF
1453 if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
1454 cat >>e${EMULATION_NAME}.c <<EOF
1456 static void gld${EMULATION_NAME}_list_options PARAMS ((FILE * file));
1459 gld${EMULATION_NAME}_list_options (file)
1464 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1465 cat >>e${EMULATION_NAME}.c <<EOF
1466 fprintf (file, _(" --disable-new-dtags\tDisable new dynamic tags\n"));
1467 fprintf (file, _(" --enable-new-dtags\tEnable new dynamic tags\n"));
1468 fprintf (file, _(" -z initfirst\t\tMark DSO to be initialized first at runtime\n"));
1469 fprintf (file, _(" -z interpose\t\tMark object to interpose all DSOs but executable\n"));
1470 fprintf (file, _(" -z loadfltr\t\tMark object requiring immediate process\n"));
1471 fprintf (file, _(" -z nodefaultlib\tMark object not to use default search paths\n"));
1472 fprintf (file, _(" -z nodelete\t\tMark DSO non-deletable at runtime\n"));
1473 fprintf (file, _(" -z nodlopen\t\tMark DSO not available to dlopen\n"));
1474 fprintf (file, _(" -z nodump\t\tMark DSO not available to dldump\n"));
1475 fprintf (file, _(" -z now\t\tMark object non-lazy runtime binding\n"));
1476 fprintf (file, _(" -z origin\t\tMark object requiring immediate \$ORIGIN processing\n"));
1477 fprintf (file, _("\t\t\t at runtime\n"));
1478 fprintf (file, _(" -z KEYWORD\t\tIgnored for Solaris compatibility\n"));
1482 if test -n "$PARSE_AND_LIST_OPTIONS" ; then
1483 cat >>e${EMULATION_NAME}.c <<EOF
1484 $PARSE_AND_LIST_OPTIONS
1488 cat >>e${EMULATION_NAME}.c <<EOF
1492 if test -n "$PARSE_AND_LIST_EPILOGUE" ; then
1493 cat >>e${EMULATION_NAME}.c <<EOF
1494 $PARSE_AND_LIST_EPILOGUE
1499 if test x"$LDEMUL_PARSE_ARGS" != xgld"$EMULATION_NAME"_parse_args; then
1500 cat >>e${EMULATION_NAME}.c <<EOF
1501 #define gld${EMULATION_NAME}_parse_args NULL
1504 if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
1505 cat >>e${EMULATION_NAME}.c <<EOF
1506 #define gld${EMULATION_NAME}_list_options NULL
1511 cat >>e${EMULATION_NAME}.c <<EOF
1513 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
1515 ${LDEMUL_BEFORE_PARSE-gld${EMULATION_NAME}_before_parse},
1516 ${LDEMUL_SYSLIB-syslib_default},
1517 ${LDEMUL_HLL-hll_default},
1518 ${LDEMUL_AFTER_PARSE-after_parse_default},
1519 ${LDEMUL_AFTER_OPEN-gld${EMULATION_NAME}_after_open},
1520 ${LDEMUL_AFTER_ALLOCATION-after_allocation_default},
1521 ${LDEMUL_SET_OUTPUT_ARCH-set_output_arch_default},
1522 ${LDEMUL_CHOOSE_TARGET-ldemul_default_target},
1523 ${LDEMUL_BEFORE_ALLOCATION-gld${EMULATION_NAME}_before_allocation},
1524 ${LDEMUL_GET_SCRIPT-gld${EMULATION_NAME}_get_script},
1525 "${EMULATION_NAME}",
1527 ${LDEMUL_FINISH-NULL},
1528 ${LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS-NULL},
1529 ${LDEMUL_OPEN_DYNAMIC_ARCHIVE-gld${EMULATION_NAME}_open_dynamic_archive},
1530 ${LDEMUL_PLACE_ORPHAN-gld${EMULATION_NAME}_place_orphan},
1531 ${LDEMUL_SET_SYMBOLS-NULL},
1532 ${LDEMUL_PARSE_ARGS-gld${EMULATION_NAME}_parse_args},
1533 ${LDEMUL_UNRECOGNIZED_FILE-NULL},
1534 ${LDEMUL_LIST_OPTIONS-gld${EMULATION_NAME}_list_options},
1535 ${LDEMUL_RECOGNIZED_FILE-NULL},
1536 ${LDEMUL_FIND_POTENTIAL_LIBRARIES-NULL},