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 "${ELFSIZE}" && ELFSIZE=32
6 if [ -z "$MACHINE" ]; then
9 OUTPUT_ARCH=${ARCH}:${MACHINE}
11 cat >e${EMULATION_NAME}.c <<EOF
12 /* This file is is generated by a shell script. DO NOT EDIT! */
14 /* ${ELFSIZE} bit ELF emulation code for ${EMULATION_NAME}
15 Copyright 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
16 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
17 Written by Steve Chamberlain <sac@cygnus.com>
18 ELF support by Ian Lance Taylor <ian@cygnus.com>
20 This file is part of GLD, the Gnu Linker.
22 This program is free software; you can redistribute it and/or modify
23 it under the terms of the GNU General Public License as published by
24 the Free Software Foundation; either version 2 of the License, or
25 (at your option) any later version.
27 This program is distributed in the hope that it will be useful,
28 but WITHOUT ANY WARRANTY; without even the implied warranty of
29 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30 GNU General Public License for more details.
32 You should have received a copy of the GNU General Public License
33 along with this program; if not, write to the Free Software
34 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
36 #define TARGET_IS_${EMULATION_NAME}
41 #include "libiberty.h"
42 #include "safe-ctype.h"
55 #include "elf/common.h"
58 /* Declare functions used by various EXTRA_EM_FILEs. */
59 static void gld${EMULATION_NAME}_before_parse (void);
60 static void gld${EMULATION_NAME}_after_open (void);
61 static void gld${EMULATION_NAME}_before_allocation (void);
62 static bfd_boolean gld${EMULATION_NAME}_place_orphan (asection *s);
63 static void gld${EMULATION_NAME}_layout_sections_again (void);
64 static void gld${EMULATION_NAME}_finish (void) ATTRIBUTE_UNUSED;
68 if [ "x${USE_LIBPATH}" = xyes ] ; then
70 *-*-linux-* | *-*-k*bsd*-*)
71 cat >>e${EMULATION_NAME}.c <<EOF
80 # Import any needed special functions and/or overrides.
82 if test -n "$EXTRA_EM_FILE" ; then
83 . ${srcdir}/emultempl/${EXTRA_EM_FILE}.em
86 # Functions in this file can be overridden by setting the LDEMUL_* shell
87 # variables. If the name of the overriding function is the same as is
88 # defined in this file, then don't output this file's version.
89 # If a different overriding name is given then output the standard function
90 # as presumably it is called from the overriding function.
92 if test x"$LDEMUL_BEFORE_PARSE" != xgld"$EMULATION_NAME"_before_parse; then
93 cat >>e${EMULATION_NAME}.c <<EOF
96 gld${EMULATION_NAME}_before_parse (void)
98 ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
99 config.dynamic_link = ${DYNAMIC_LINK-TRUE};
100 config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo TRUE ; else echo FALSE ; fi`;
106 if test x"$LDEMUL_RECOGNIZED_FILE" != xgld"${EMULATION_NAME}"_load_symbols; then
107 cat >>e${EMULATION_NAME}.c <<EOF
108 /* Handle as_needed DT_NEEDED. */
111 gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *entry)
115 /* Tell the ELF linker that we don't want the output file to have a
116 DT_NEEDED entry for this file, unless it is used to resolve
117 references in a regular object. */
118 if (entry->as_needed)
119 class = DYN_AS_NEEDED;
121 /* Tell the ELF linker that we don't want the output file to have a
122 DT_NEEDED entry for any dynamic library in DT_NEEDED tags from
124 if (!entry->add_needed)
125 class |= DYN_NO_ADD_NEEDED;
127 if (entry->just_syms_flag
128 && (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) != 0)
129 einfo (_("%P%F: --just-symbols may not be used on DSO: %B\n"),
133 || (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) == 0)
136 bfd_elf_set_dyn_lib_class (entry->the_bfd, class);
138 /* Continue on with normal load_symbols processing. */
144 cat >>e${EMULATION_NAME}.c <<EOF
146 /* These variables are required to pass information back and forth
147 between after_open and check_needed and stat_needed and vercheck. */
149 static struct bfd_link_needed_list *global_needed;
150 static struct stat global_stat;
151 static bfd_boolean global_found;
152 static struct bfd_link_needed_list *global_vercheck_needed;
153 static bfd_boolean global_vercheck_failed;
156 /* On Linux, it's possible to have different versions of the same
157 shared library linked against different versions of libc. The
158 dynamic linker somehow tags which libc version to use in
159 /etc/ld.so.cache, and, based on the libc that it sees in the
160 executable, chooses which version of the shared library to use.
162 We try to do a similar check here by checking whether this shared
163 library needs any other shared libraries which may conflict with
164 libraries we have already included in the link. If it does, we
165 skip it, and try to find another shared library farther on down the
168 This is called via lang_for_each_input_file.
169 GLOBAL_VERCHECK_NEEDED is the list of objects needed by the object
170 which we are checking. This sets GLOBAL_VERCHECK_FAILED if we find
171 a conflicting version. */
174 gld${EMULATION_NAME}_vercheck (lang_input_statement_type *s)
177 struct bfd_link_needed_list *l;
179 if (global_vercheck_failed)
181 if (s->the_bfd == NULL
182 || (bfd_get_file_flags (s->the_bfd) & DYNAMIC) == 0)
185 soname = bfd_elf_get_dt_soname (s->the_bfd);
187 soname = lbasename (bfd_get_filename (s->the_bfd));
189 for (l = global_vercheck_needed; l != NULL; l = l->next)
193 if (strcmp (soname, l->name) == 0)
195 /* Probably can't happen, but it's an easy check. */
199 if (strchr (l->name, '/') != NULL)
202 suffix = strstr (l->name, ".so.");
206 suffix += sizeof ".so." - 1;
208 if (strncmp (soname, l->name, suffix - l->name) == 0)
210 /* Here we know that S is a dynamic object FOO.SO.VER1, and
211 the object we are considering needs a dynamic object
212 FOO.SO.VER2, and VER1 and VER2 are different. This
213 appears to be a version mismatch, so we tell the caller
214 to try a different version of this library. */
215 global_vercheck_failed = TRUE;
222 /* See if an input file matches a DT_NEEDED entry by running stat on
226 gld${EMULATION_NAME}_stat_needed (lang_input_statement_type *s)
234 if (s->the_bfd == NULL)
237 && (bfd_elf_get_dyn_lib_class (s->the_bfd) & DYN_AS_NEEDED) != 0)
240 if (bfd_stat (s->the_bfd, &st) != 0)
242 einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd);
246 /* Some operating systems, e.g. Windows, do not provide a meaningful
247 st_ino; they always set it to zero. (Windows does provide a
248 meaningful st_dev.) Do not indicate a duplicate library in that
249 case. While there is no guarantee that a system that provides
250 meaningful inode numbers will never set st_ino to zero, this is
251 merely an optimization, so we do not need to worry about false
253 if (st.st_dev == global_stat.st_dev
254 && st.st_ino == global_stat.st_ino
261 /* We issue a warning if it looks like we are including two
262 different versions of the same shared library. For example,
263 there may be a problem if -lc picks up libc.so.6 but some other
264 shared library has a DT_NEEDED entry of libc.so.5. This is a
265 heuristic test, and it will only work if the name looks like
266 NAME.so.VERSION. FIXME: Depending on file names is error-prone.
267 If we really want to issue warnings about mixing version numbers
268 of shared libraries, we need to find a better way. */
270 if (strchr (global_needed->name, '/') != NULL)
272 suffix = strstr (global_needed->name, ".so.");
275 suffix += sizeof ".so." - 1;
277 soname = bfd_elf_get_dt_soname (s->the_bfd);
279 soname = lbasename (s->filename);
281 if (strncmp (soname, global_needed->name, suffix - global_needed->name) == 0)
282 einfo ("%P: warning: %s, needed by %B, may conflict with %s\n",
283 global_needed->name, global_needed->by, soname);
292 /* This function is called for each possible name for a dynamic object
293 named by a DT_NEEDED entry. The FORCE parameter indicates whether
294 to skip the check for a conflicting version. */
297 gld${EMULATION_NAME}_try_needed (struct dt_needed *needed,
301 const char *name = needed->name;
305 abfd = bfd_openr (name, bfd_get_target (output_bfd));
308 if (! bfd_check_format (abfd, bfd_object))
313 if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0)
319 /* For DT_NEEDED, they have to match. */
320 if (abfd->xvec != output_bfd->xvec)
326 /* Check whether this object would include any conflicting library
327 versions. If FORCE is set, then we skip this check; we use this
328 the second time around, if we couldn't find any compatible
329 instance of the shared library. */
333 struct bfd_link_needed_list *needed;
335 if (! bfd_elf_get_bfd_needed_list (abfd, &needed))
336 einfo ("%F%P:%B: bfd_elf_get_bfd_needed_list failed: %E\n", abfd);
340 global_vercheck_needed = needed;
341 global_vercheck_failed = FALSE;
342 lang_for_each_input_file (gld${EMULATION_NAME}_vercheck);
343 if (global_vercheck_failed)
346 /* Return FALSE to force the caller to move on to try
347 another file on the search path. */
351 /* But wait! It gets much worse. On Linux, if a shared
352 library does not use libc at all, we are supposed to skip
353 it the first time around in case we encounter a shared
354 library later on with the same name which does use the
355 version of libc that we want. This is much too horrible
356 to use on any system other than Linux. */
360 *-*-linux-* | *-*-k*bsd*-*)
361 cat >>e${EMULATION_NAME}.c <<EOF
363 struct bfd_link_needed_list *l;
365 for (l = needed; l != NULL; l = l->next)
366 if (strncmp (l->name, "libc.so", 7) == 0)
378 cat >>e${EMULATION_NAME}.c <<EOF
382 /* We've found a dynamic object matching the DT_NEEDED entry. */
384 /* We have already checked that there is no other input file of the
385 same name. We must now check again that we are not including the
386 same file twice. We need to do this because on many systems
387 libc.so is a symlink to, e.g., libc.so.1. The SONAME entry will
388 reference libc.so.1. If we have already included libc.so, we
389 don't want to include libc.so.1 if they are the same file, and we
390 can only check that using stat. */
392 if (bfd_stat (abfd, &global_stat) != 0)
393 einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd);
395 /* First strip off everything before the last '/'. */
396 soname = lbasename (abfd->filename);
398 if (trace_file_tries)
399 info_msg (_("found %s at %s\n"), soname, name);
401 global_found = FALSE;
402 lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed);
405 /* Return TRUE to indicate that we found the file, even though
406 we aren't going to do anything with it. */
410 /* Specify the soname to use. */
411 bfd_elf_set_dt_needed_name (abfd, soname);
413 /* Tell the ELF linker that we don't want the output file to have a
414 DT_NEEDED entry for this file, unless it is used to resolve
415 references in a regular object. */
416 class = DYN_DT_NEEDED;
418 /* Tell the ELF linker that we don't want the output file to have a
419 DT_NEEDED entry for this file at all if the entry is from a file
420 with DYN_NO_ADD_NEEDED. */
421 if (needed->by != NULL
422 && (bfd_elf_get_dyn_lib_class (needed->by) & DYN_NO_ADD_NEEDED) != 0)
423 class |= DYN_NO_NEEDED | DYN_NO_ADD_NEEDED;
425 bfd_elf_set_dyn_lib_class (abfd, class);
427 /* Add this file into the symbol table. */
428 if (! bfd_link_add_symbols (abfd, &link_info))
429 einfo ("%F%B: could not read symbols: %E\n", abfd);
435 /* Search for a needed file in a path. */
438 gld${EMULATION_NAME}_search_needed (const char *path,
439 struct dt_needed *n, int force)
442 const char *name = n->name;
444 struct dt_needed needed;
447 return gld${EMULATION_NAME}_try_needed (n, force);
449 if (path == NULL || *path == '\0')
453 needed.name = n->name;
458 char *filename, *sset;
460 s = strchr (path, ':');
462 s = path + strlen (path);
464 filename = (char *) xmalloc (s - path + len + 2);
469 memcpy (filename, path, s - path);
470 filename[s - path] = '/';
471 sset = filename + (s - path) + 1;
475 needed.name = filename;
476 if (gld${EMULATION_NAME}_try_needed (&needed, force))
490 if [ "x${USE_LIBPATH}" = xyes ] ; then
491 cat >>e${EMULATION_NAME}.c <<EOF
493 /* Add the sysroot to every entry in a colon-separated path. */
496 gld${EMULATION_NAME}_add_sysroot (const char *path)
505 if (path[i++] == ':')
511 len = len + (colons + 1) * strlen (ld_sysroot);
512 ret = xmalloc (len + 1);
513 strcpy (ret, ld_sysroot);
514 p = ret + strlen (ret);
520 strcpy (p, ld_sysroot);
532 *-*-linux-* | *-*-k*bsd*-*)
533 cat >>e${EMULATION_NAME}.c <<EOF
534 /* For a native linker, check the file /etc/ld.so.conf for directories
535 in which we may find shared libraries. /etc/ld.so.conf is really
536 only meaningful on Linux. */
538 struct gld${EMULATION_NAME}_ld_so_conf
545 gld${EMULATION_NAME}_parse_ld_so_conf
546 (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename);
549 gld${EMULATION_NAME}_parse_ld_so_conf_include
550 (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename,
558 if (pattern[0] != '/')
560 char *p = strrchr (filename, '/');
561 size_t patlen = strlen (pattern) + 1;
563 newp = xmalloc (p - filename + 1 + patlen);
564 memcpy (newp, filename, p - filename + 1);
565 memcpy (newp + (p - filename + 1), pattern, patlen);
570 if (glob (pattern, 0, NULL, &gl) == 0)
574 for (i = 0; i < gl.gl_pathc; ++i)
575 gld${EMULATION_NAME}_parse_ld_so_conf (info, gl.gl_pathv[i]);
579 /* If we do not have glob, treat the pattern as a literal filename. */
580 gld${EMULATION_NAME}_parse_ld_so_conf (info, pattern);
588 gld${EMULATION_NAME}_parse_ld_so_conf
589 (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename)
591 FILE *f = fopen (filename, FOPEN_RT);
599 line = xmalloc (linelen);
604 /* Normally this would use getline(3), but we need to be portable. */
605 while ((q = fgets (p, linelen - (p - line), f)) != NULL
606 && strlen (q) == linelen - (p - line) - 1
607 && line[linelen - 2] != '\n')
609 line = xrealloc (line, 2 * linelen);
610 p = line + linelen - 1;
614 if (q == NULL && p == line)
617 p = strchr (line, '\n');
621 /* Because the file format does not know any form of quoting we
622 can search forward for the next '#' character and if found
623 make it terminating the line. */
624 p = strchr (line, '#');
628 /* Remove leading whitespace. NUL is no whitespace character. */
630 while (*p == ' ' || *p == '\f' || *p == '\r' || *p == '\t' || *p == '\v')
633 /* If the line is blank it is ignored. */
637 if (!strncmp (p, "include", 7) && (p[7] == ' ' || p[7] == '\t'))
643 while (*p == ' ' || *p == '\t')
651 while (*p != ' ' && *p != '\t' && *p)
657 gld${EMULATION_NAME}_parse_ld_so_conf_include (info, filename,
665 while (*p && *p != '=' && *p != ' ' && *p != '\t' && *p != '\f'
666 && *p != '\r' && *p != '\v')
669 while (p != dir && p[-1] == '/')
671 if (info->path == NULL)
673 info->alloc = p - dir + 1 + 256;
674 info->path = xmalloc (info->alloc);
679 if (info->len + 1 + (p - dir) >= info->alloc)
681 info->alloc += p - dir + 256;
682 info->path = xrealloc (info->path, info->alloc);
684 info->path[info->len++] = ':';
686 memcpy (info->path + info->len, dir, p - dir);
687 info->len += p - dir;
688 info->path[info->len] = '\0';
697 gld${EMULATION_NAME}_check_ld_so_conf (const char *name, int force)
699 static bfd_boolean initialized;
700 static char *ld_so_conf;
701 struct dt_needed needed;
706 struct gld${EMULATION_NAME}_ld_so_conf info;
708 tmppath = concat (ld_sysroot, "/etc/ld.so.conf", NULL);
710 info.len = info.alloc = 0;
711 gld${EMULATION_NAME}_parse_ld_so_conf (&info, tmppath);
715 char *d = gld${EMULATION_NAME}_add_sysroot (info.path);
722 if (ld_so_conf == NULL)
728 return gld${EMULATION_NAME}_search_needed (ld_so_conf, &needed, force);
736 cat >>e${EMULATION_NAME}.c <<EOF
738 /* See if an input file matches a DT_NEEDED entry by name. */
741 gld${EMULATION_NAME}_check_needed (lang_input_statement_type *s)
746 /* If this input file was an as-needed entry, and wasn't found to be
747 needed at the stage it was linked, then don't say we have loaded it. */
749 && (s->the_bfd == NULL
750 || (bfd_elf_get_dyn_lib_class (s->the_bfd) & DYN_AS_NEEDED) != 0))
753 if (s->filename != NULL)
757 if (strcmp (s->filename, global_needed->name) == 0)
763 if (s->search_dirs_flag)
765 f = strrchr (s->filename, '/');
767 && strcmp (f + 1, global_needed->name) == 0)
775 if (s->the_bfd != NULL)
779 soname = bfd_elf_get_dt_soname (s->the_bfd);
781 && strcmp (soname, global_needed->name) == 0)
791 if test x"$LDEMUL_AFTER_OPEN" != xgld"$EMULATION_NAME"_after_open; then
792 cat >>e${EMULATION_NAME}.c <<EOF
794 /* This is called after all the input files have been opened. */
797 gld${EMULATION_NAME}_after_open (void)
799 struct bfd_link_needed_list *needed, *l;
801 /* We only need to worry about this when doing a final link. */
802 if (link_info.relocatable || !link_info.executable)
805 /* Get the list of files which appear in DT_NEEDED entries in
806 dynamic objects included in the link (often there will be none).
807 For each such file, we want to track down the corresponding
808 library, and include the symbol table in the link. This is what
809 the runtime dynamic linker will do. Tracking the files down here
810 permits one dynamic object to include another without requiring
811 special action by the person doing the link. Note that the
812 needed list can actually grow while we are stepping through this
814 needed = bfd_elf_get_needed_list (output_bfd, &link_info);
815 for (l = needed; l != NULL; l = l->next)
817 struct bfd_link_needed_list *ll;
818 struct dt_needed n, nn;
821 /* If the lib that needs this one was --as-needed and wasn't
822 found to be needed, then this lib isn't needed either. */
824 && (bfd_elf_get_dyn_lib_class (l->by) & DYN_AS_NEEDED) != 0)
827 /* If we've already seen this file, skip it. */
828 for (ll = needed; ll != l; ll = ll->next)
830 || (bfd_elf_get_dyn_lib_class (ll->by) & DYN_AS_NEEDED) == 0)
831 && strcmp (ll->name, l->name) == 0)
836 /* See if this file was included in the link explicitly. */
838 global_found = FALSE;
839 lang_for_each_input_file (gld${EMULATION_NAME}_check_needed);
846 if (trace_file_tries)
847 info_msg (_("%s needed by %B\n"), l->name, l->by);
849 /* We need to find this file and include the symbol table. We
850 want to search for the file in the same way that the dynamic
851 linker will search. That means that we want to use
852 rpath_link, rpath, then the environment variable
853 LD_LIBRARY_PATH (native only), then the DT_RPATH/DT_RUNPATH
854 entries (native only), then the linker script LIB_SEARCH_DIRS.
855 We do not search using the -L arguments.
857 We search twice. The first time, we skip objects which may
858 introduce version mismatches. The second time, we force
859 their use. See gld${EMULATION_NAME}_vercheck comment. */
860 for (force = 0; force < 2; force++)
863 search_dirs_type *search;
865 if [ "x${NATIVE}" = xyes ] ; then
866 cat >>e${EMULATION_NAME}.c <<EOF
867 const char *lib_path;
870 if [ "x${USE_LIBPATH}" = xyes ] ; then
871 cat >>e${EMULATION_NAME}.c <<EOF
872 struct bfd_link_needed_list *rp;
876 cat >>e${EMULATION_NAME}.c <<EOF
878 if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link,
882 if [ "x${USE_LIBPATH}" = xyes ] ; then
883 cat >>e${EMULATION_NAME}.c <<EOF
884 if (gld${EMULATION_NAME}_search_needed (command_line.rpath,
889 if [ "x${NATIVE}" = xyes ] ; then
890 cat >>e${EMULATION_NAME}.c <<EOF
891 if (command_line.rpath_link == NULL
892 && command_line.rpath == NULL)
894 lib_path = (const char *) getenv ("LD_RUN_PATH");
895 if (gld${EMULATION_NAME}_search_needed (lib_path, &n,
899 lib_path = (const char *) getenv ("LD_LIBRARY_PATH");
900 if (gld${EMULATION_NAME}_search_needed (lib_path, &n, force))
904 if [ "x${USE_LIBPATH}" = xyes ] ; then
905 cat >>e${EMULATION_NAME}.c <<EOF
907 rp = bfd_elf_get_runpath_list (output_bfd, &link_info);
908 for (; !found && rp != NULL; rp = rp->next)
910 char *tmpname = gld${EMULATION_NAME}_add_sysroot (rp->name);
911 found = (rp->by == l->by
912 && gld${EMULATION_NAME}_search_needed (tmpname,
922 cat >>e${EMULATION_NAME}.c <<EOF
923 len = strlen (l->name);
924 for (search = search_head; search != NULL; search = search->next)
930 filename = (char *) xmalloc (strlen (search->name) + len + 2);
931 sprintf (filename, "%s/%s", search->name, l->name);
933 if (gld${EMULATION_NAME}_try_needed (&nn, force))
940 if [ "x${USE_LIBPATH}" = xyes ] ; then
942 *-*-linux-* | *-*-k*bsd*-*)
943 cat >>e${EMULATION_NAME}.c <<EOF
944 if (gld${EMULATION_NAME}_check_ld_so_conf (l->name, force))
951 cat >>e${EMULATION_NAME}.c <<EOF
957 einfo ("%P: warning: %s, needed by %B, not found (try using -rpath or -rpath-link)\n",
965 cat >>e${EMULATION_NAME}.c <<EOF
967 /* Look through an expression for an assignment statement. */
970 gld${EMULATION_NAME}_find_exp_assignment (etree_type *exp)
972 bfd_boolean provide = FALSE;
974 switch (exp->type.node_class)
980 /* We call record_link_assignment even if the symbol is defined.
981 This is because if it is defined by a dynamic object, we
982 actually want to use the value defined by the linker script,
983 not the value from the dynamic object (because we are setting
984 symbols like etext). If the symbol is defined by a regular
985 object, then, as it happens, calling record_link_assignment
987 if (strcmp (exp->assign.dst, ".") != 0)
989 if (!bfd_elf_record_link_assignment (&link_info, exp->assign.dst,
991 einfo ("%P%F: failed to record assignment to %s: %E\n",
994 gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src);
998 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs);
999 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs);
1003 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond);
1004 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs);
1005 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs);
1009 gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child);
1018 /* This is called by the before_allocation routine via
1019 lang_for_each_statement. It locates any assignment statements, and
1020 tells the ELF backend about them, in case they are assignments to
1021 symbols which are referred to by dynamic objects. */
1024 gld${EMULATION_NAME}_find_statement_assignment (lang_statement_union_type *s)
1026 if (s->header.type == lang_assignment_statement_enum)
1027 gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp);
1032 if test x"$LDEMUL_BEFORE_ALLOCATION" != xgld"$EMULATION_NAME"_before_allocation; then
1033 if test x"${ELF_INTERPRETER_NAME+set}" = xset; then
1034 ELF_INTERPRETER_SET_DEFAULT="
1035 if (sinterp != NULL)
1037 sinterp->contents = (unsigned char *) ${ELF_INTERPRETER_NAME};
1038 sinterp->size = strlen ((char *) sinterp->contents) + 1;
1043 ELF_INTERPRETER_SET_DEFAULT=
1045 cat >>e${EMULATION_NAME}.c <<EOF
1047 /* This is called after the sections have been attached to output
1048 sections, but before any sizes or addresses have been set. */
1051 gld${EMULATION_NAME}_before_allocation (void)
1056 if (link_info.hash->type == bfd_link_elf_hash_table)
1057 _bfd_elf_tls_setup (output_bfd, &link_info);
1059 /* If we are going to make any variable assignments, we need to let
1060 the ELF backend know about them in case the variables are
1061 referred to by dynamic objects. */
1062 lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment);
1064 /* Let the ELF backend work out the sizes of any sections required
1065 by dynamic linking. */
1066 rpath = command_line.rpath;
1068 rpath = (const char *) getenv ("LD_RUN_PATH");
1069 if (! (bfd_elf_size_dynamic_sections
1070 (output_bfd, command_line.soname, rpath,
1071 command_line.filter_shlib,
1072 (const char * const *) command_line.auxiliary_filters,
1073 &link_info, &sinterp, lang_elf_version_info)))
1074 einfo ("%P%F: failed to set dynamic section sizes: %E\n");
1076 ${ELF_INTERPRETER_SET_DEFAULT}
1077 /* Let the user override the dynamic linker we are using. */
1078 if (command_line.interpreter != NULL
1081 sinterp->contents = (bfd_byte *) command_line.interpreter;
1082 sinterp->size = strlen (command_line.interpreter) + 1;
1085 /* Look for any sections named .gnu.warning. As a GNU extensions,
1086 we treat such sections as containing warning messages. We print
1087 out the warning message, and then zero out the section size so
1088 that it does not get copied into the output file. */
1091 LANG_FOR_EACH_INPUT_STATEMENT (is)
1095 bfd_size_type prefix_len;
1098 const char * gnu_warning_prefix = _("warning: ");
1100 if (is->just_syms_flag)
1103 s = bfd_get_section_by_name (is->the_bfd, ".gnu.warning");
1108 prefix_len = strlen (gnu_warning_prefix);
1109 msg = xmalloc ((size_t) (prefix_len + sz + 1));
1110 strcpy (msg, gnu_warning_prefix);
1111 if (! bfd_get_section_contents (is->the_bfd, s, msg + prefix_len,
1113 einfo ("%F%B: Can't read contents of section .gnu.warning: %E\n",
1115 msg[prefix_len + sz] = '\0';
1116 ret = link_info.callbacks->warning (&link_info, msg,
1117 (const char *) NULL,
1118 is->the_bfd, (asection *) NULL,
1123 /* Clobber the section size, so that we don't waste copying the
1124 warning into the output file. */
1127 /* Also set SEC_EXCLUDE, so that symbols defined in the warning
1128 section don't get copied to the output. */
1129 s->flags |= SEC_EXCLUDE;
1133 before_allocation_default ();
1135 if (!bfd_elf_size_dynsym_hash_dynstr (output_bfd, &link_info))
1136 einfo ("%P%F: failed to set dynamic section sizes: %E\n");
1142 if test x"$LDEMUL_OPEN_DYNAMIC_ARCHIVE" != xgld"$EMULATION_NAME"_open_dynamic_archive; then
1143 cat >>e${EMULATION_NAME}.c <<EOF
1145 /* Try to open a dynamic archive. This is where we know that ELF
1146 dynamic libraries have an extension of .so (or .sl on oddball systems
1150 gld${EMULATION_NAME}_open_dynamic_archive
1151 (const char *arch, search_dirs_type *search, lang_input_statement_type *entry)
1153 const char *filename;
1156 if (! entry->is_archive)
1159 filename = entry->filename;
1161 /* This allocates a few bytes too many when EXTRA_SHLIB_EXTENSION
1162 is defined, but it does not seem worth the headache to optimize
1163 away those two bytes of space. */
1164 string = (char *) xmalloc (strlen (search->name)
1167 #ifdef EXTRA_SHLIB_EXTENSION
1168 + strlen (EXTRA_SHLIB_EXTENSION)
1170 + sizeof "/lib.so");
1172 sprintf (string, "%s/lib%s%s.so", search->name, filename, arch);
1174 #ifdef EXTRA_SHLIB_EXTENSION
1175 /* Try the .so extension first. If that fails build a new filename
1176 using EXTRA_SHLIB_EXTENSION. */
1177 if (! ldfile_try_open_bfd (string, entry))
1178 sprintf (string, "%s/lib%s%s%s", search->name,
1179 filename, arch, EXTRA_SHLIB_EXTENSION);
1182 if (! ldfile_try_open_bfd (string, entry))
1188 entry->filename = string;
1190 /* We have found a dynamic object to include in the link. The ELF
1191 backend linker will create a DT_NEEDED entry in the .dynamic
1192 section naming this file. If this file includes a DT_SONAME
1193 entry, it will be used. Otherwise, the ELF linker will just use
1194 the name of the file. For an archive found by searching, like
1195 this one, the DT_NEEDED entry should consist of just the name of
1196 the file, without the path information used to find it. Note
1197 that we only need to do this if we have a dynamic object; an
1198 archive will never be referenced by a DT_NEEDED entry.
1200 FIXME: This approach--using bfd_elf_set_dt_needed_name--is not
1201 very pretty. I haven't been able to think of anything that is
1203 if (bfd_check_format (entry->the_bfd, bfd_object)
1204 && (entry->the_bfd->flags & DYNAMIC) != 0)
1206 ASSERT (entry->is_archive && entry->search_dirs_flag);
1208 /* Rather than duplicating the logic above. Just use the
1209 filename we recorded earlier. */
1211 filename = lbasename (entry->filename);
1212 bfd_elf_set_dt_needed_name (entry->the_bfd, filename);
1221 if test x"$LDEMUL_PLACE_ORPHAN" != xgld"$EMULATION_NAME"_place_orphan; then
1222 cat >>e${EMULATION_NAME}.c <<EOF
1224 /* A variant of lang_output_section_find used by place_orphan. */
1226 static lang_output_section_statement_type *
1227 output_rel_find (asection *sec, int isdyn)
1229 lang_output_section_statement_type *lookup;
1230 lang_output_section_statement_type *last = NULL;
1231 lang_output_section_statement_type *last_alloc = NULL;
1232 lang_output_section_statement_type *last_rel = NULL;
1233 lang_output_section_statement_type *last_rel_alloc = NULL;
1234 int rela = sec->name[4] == 'a';
1236 for (lookup = &lang_output_section_statement.head->output_section_statement;
1238 lookup = lookup->next)
1240 if (lookup->constraint != -1
1241 && strncmp (".rel", lookup->name, 4) == 0)
1243 int lookrela = lookup->name[4] == 'a';
1245 /* .rel.dyn must come before all other reloc sections, to suit
1250 /* Don't place after .rel.plt as doing so results in wrong
1252 if (strcmp (".plt", lookup->name + 4 + lookrela) == 0)
1255 if (rela == lookrela || last_rel == NULL)
1257 if ((rela == lookrela || last_rel_alloc == NULL)
1258 && lookup->bfd_section != NULL
1259 && (lookup->bfd_section->flags & SEC_ALLOC) != 0)
1260 last_rel_alloc = lookup;
1264 if (lookup->bfd_section != NULL
1265 && (lookup->bfd_section->flags & SEC_ALLOC) != 0)
1266 last_alloc = lookup;
1270 return last_rel_alloc;
1281 /* Place an orphan section. We use this to put random SHF_ALLOC
1282 sections in the right segment. */
1285 gld${EMULATION_NAME}_place_orphan (asection *s)
1287 static struct orphan_save hold[] =
1290 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
1293 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1296 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
1302 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1305 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1308 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_SMALL_DATA,
1311 enum orphan_save_index
1321 static int orphan_init_done = 0;
1322 struct orphan_save *place;
1323 const char *secname;
1324 lang_output_section_statement_type *after;
1325 lang_output_section_statement_type *os;
1327 int iself = s->owner->xvec->flavour == bfd_target_elf_flavour;
1328 unsigned int sh_type = iself ? elf_section_type (s) : SHT_NULL;
1330 secname = bfd_get_section_name (s->owner, s);
1332 if (! link_info.relocatable
1333 && link_info.combreloc
1334 && (s->flags & SEC_ALLOC))
1340 secname = ".rela.dyn";
1344 secname = ".rel.dyn";
1350 else if (strncmp (secname, ".rel", 4) == 0)
1352 secname = secname[4] == 'a' ? ".rela.dyn" : ".rel.dyn";
1357 if (isdyn || (!config.unique_orphan_sections && !unique_section_p (s)))
1359 /* Look through the script to see where to place this section. */
1360 os = lang_output_section_find (secname);
1363 && (os->bfd_section == NULL
1364 || os->bfd_section->flags == 0
1365 || (_bfd_elf_match_sections_by_type (output_bfd,
1368 && ((s->flags ^ os->bfd_section->flags)
1369 & (SEC_LOAD | SEC_ALLOC)) == 0)))
1371 /* We already have an output section statement with this
1372 name, and its bfd section, if any, has compatible flags.
1373 If the section already exists but does not have any flags
1374 set, then it has been created by the linker, probably as a
1375 result of a --section-start command line switch. */
1376 lang_add_section (&os->children, s, os);
1381 if (!orphan_init_done)
1383 struct orphan_save *ho;
1384 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
1385 if (ho->name != NULL)
1387 ho->os = lang_output_section_find (ho->name);
1388 if (ho->os != NULL && ho->os->flags == 0)
1389 ho->os->flags = ho->flags;
1391 orphan_init_done = 1;
1394 /* If this is a final link, then always put .gnu.warning.SYMBOL
1395 sections into the .text section to get them out of the way. */
1396 if (link_info.executable
1397 && ! link_info.relocatable
1398 && strncmp (secname, ".gnu.warning.", sizeof ".gnu.warning." - 1) == 0
1399 && hold[orphan_text].os != NULL)
1401 lang_add_section (&hold[orphan_text].os->children, s,
1402 hold[orphan_text].os);
1406 /* Decide which segment the section should go in based on the
1407 section name and section flags. We put loadable .note sections
1408 right after the .interp section, so that the PT_NOTE segment is
1409 stored right after the program headers where the OS can read it
1410 in the first page. */
1413 if ((s->flags & SEC_ALLOC) == 0)
1415 else if ((s->flags & SEC_LOAD) != 0
1416 && ((iself && sh_type == SHT_NOTE)
1417 || (!iself && strncmp (secname, ".note", 5) == 0)))
1418 place = &hold[orphan_interp];
1419 else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
1420 place = &hold[orphan_bss];
1421 else if ((s->flags & SEC_SMALL_DATA) != 0)
1422 place = &hold[orphan_sdata];
1423 else if ((s->flags & SEC_READONLY) == 0)
1424 place = &hold[orphan_data];
1425 else if (((iself && (sh_type == SHT_RELA || sh_type == SHT_REL))
1426 || (!iself && strncmp (secname, ".rel", 4) == 0))
1427 && (s->flags & SEC_LOAD) != 0)
1428 place = &hold[orphan_rel];
1429 else if ((s->flags & SEC_CODE) == 0)
1430 place = &hold[orphan_rodata];
1432 place = &hold[orphan_text];
1437 if (place->os == NULL)
1439 if (place->name != NULL)
1440 place->os = lang_output_section_find (place->name);
1442 place->os = output_rel_find (s, isdyn);
1446 after = lang_output_section_find_by_flags
1447 (s, &place->os, _bfd_elf_match_sections_by_type);
1449 /* *ABS* is always the first output section statement. */
1450 after = &lang_output_section_statement.head->output_section_statement;
1453 /* Choose a unique name for the section. This will be needed if the
1454 same section name appears in the input file with different
1455 loadable or allocatable characteristics. */
1456 if (bfd_get_section_by_name (output_bfd, secname) != NULL)
1458 static int count = 1;
1459 secname = bfd_get_unique_section_name (output_bfd, secname, &count);
1460 if (secname == NULL)
1461 einfo ("%F%P: place_orphan failed: %E\n");
1464 lang_insert_orphan (s, secname, after, place, NULL, NULL);
1471 if test x"$LDEMUL_FINISH" != xgld"$EMULATION_NAME"_finish; then
1472 cat >>e${EMULATION_NAME}.c <<EOF
1475 gld${EMULATION_NAME}_layout_sections_again (void)
1477 lang_reset_memory_regions ();
1479 /* Resize the sections. */
1480 lang_size_sections (NULL, TRUE);
1482 /* Redo special stuff. */
1483 ldemul_after_allocation ();
1485 /* Do the assignments again. */
1486 lang_do_assignments ();
1490 gld${EMULATION_NAME}_finish (void)
1492 if (bfd_elf_discard_info (output_bfd, &link_info))
1493 gld${EMULATION_NAME}_layout_sections_again ();
1500 if test x"$LDEMUL_GET_SCRIPT" != xgld"$EMULATION_NAME"_get_script; then
1501 cat >>e${EMULATION_NAME}.c <<EOF
1504 gld${EMULATION_NAME}_get_script (int *isfile)
1507 if test -n "$COMPILE_IN"
1509 # Scripts compiled in.
1511 # sed commands to quote an ld script as a C string.
1512 sc="-f stringify.sed"
1514 cat >>e${EMULATION_NAME}.c <<EOF
1518 if (link_info.relocatable && config.build_constructors)
1521 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1522 echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
1523 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
1524 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
1525 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
1526 if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then : ; else
1527 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
1528 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
1530 if test -n "$GENERATE_PIE_SCRIPT" ; then
1531 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1532 echo ' ; else if (link_info.pie && link_info.combreloc' >> e${EMULATION_NAME}.c
1533 echo ' && link_info.relro' >> e${EMULATION_NAME}.c
1534 echo ' && (link_info.flags & DT_BIND_NOW)) return' >> e${EMULATION_NAME}.c
1535 sed $sc ldscripts/${EMULATION_NAME}.xdw >> e${EMULATION_NAME}.c
1536 echo ' ; else if (link_info.pie && link_info.combreloc) return' >> e${EMULATION_NAME}.c
1537 sed $sc ldscripts/${EMULATION_NAME}.xdc >> e${EMULATION_NAME}.c
1539 echo ' ; else if (link_info.pie) return' >> e${EMULATION_NAME}.c
1540 sed $sc ldscripts/${EMULATION_NAME}.xd >> e${EMULATION_NAME}.c
1542 if test -n "$GENERATE_SHLIB_SCRIPT" ; then
1543 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1544 echo ' ; else if (link_info.shared && link_info.combreloc' >> e${EMULATION_NAME}.c
1545 echo ' && link_info.relro' >> e${EMULATION_NAME}.c
1546 echo ' && (link_info.flags & DT_BIND_NOW)) return' >> e${EMULATION_NAME}.c
1547 sed $sc ldscripts/${EMULATION_NAME}.xsw >> e${EMULATION_NAME}.c
1548 echo ' ; else if (link_info.shared && link_info.combreloc) return' >> e${EMULATION_NAME}.c
1549 sed $sc ldscripts/${EMULATION_NAME}.xsc >> e${EMULATION_NAME}.c
1551 echo ' ; else if (link_info.shared) return' >> e${EMULATION_NAME}.c
1552 sed $sc ldscripts/${EMULATION_NAME}.xs >> e${EMULATION_NAME}.c
1554 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1555 echo ' ; else if (link_info.combreloc && link_info.relro' >> e${EMULATION_NAME}.c
1556 echo ' && (link_info.flags & DT_BIND_NOW)) return' >> e${EMULATION_NAME}.c
1557 sed $sc ldscripts/${EMULATION_NAME}.xw >> e${EMULATION_NAME}.c
1558 echo ' ; else if (link_info.combreloc) return' >> e${EMULATION_NAME}.c
1559 sed $sc ldscripts/${EMULATION_NAME}.xc >> e${EMULATION_NAME}.c
1561 echo ' ; else return' >> e${EMULATION_NAME}.c
1562 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
1563 echo '; }' >> e${EMULATION_NAME}.c
1566 # Scripts read from the filesystem.
1568 cat >>e${EMULATION_NAME}.c <<EOF
1572 if (link_info.relocatable && config.build_constructors)
1573 return "ldscripts/${EMULATION_NAME}.xu";
1574 else if (link_info.relocatable)
1575 return "ldscripts/${EMULATION_NAME}.xr";
1576 else if (!config.text_read_only)
1577 return "ldscripts/${EMULATION_NAME}.xbn";
1579 if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then :
1581 cat >>e${EMULATION_NAME}.c <<EOF
1582 else if (!config.magic_demand_paged)
1583 return "ldscripts/${EMULATION_NAME}.xn";
1586 if test -n "$GENERATE_PIE_SCRIPT" ; then
1587 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1588 cat >>e${EMULATION_NAME}.c <<EOF
1589 else if (link_info.pie && link_info.combreloc
1590 && link_info.relro && (link_info.flags & DT_BIND_NOW))
1591 return "ldscripts/${EMULATION_NAME}.xdw";
1592 else if (link_info.pie && link_info.combreloc)
1593 return "ldscripts/${EMULATION_NAME}.xdc";
1596 cat >>e${EMULATION_NAME}.c <<EOF
1597 else if (link_info.pie)
1598 return "ldscripts/${EMULATION_NAME}.xd";
1601 if test -n "$GENERATE_SHLIB_SCRIPT" ; then
1602 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1603 cat >>e${EMULATION_NAME}.c <<EOF
1604 else if (link_info.shared && link_info.combreloc
1605 && link_info.relro && (link_info.flags & DT_BIND_NOW))
1606 return "ldscripts/${EMULATION_NAME}.xsw";
1607 else if (link_info.shared && link_info.combreloc)
1608 return "ldscripts/${EMULATION_NAME}.xsc";
1611 cat >>e${EMULATION_NAME}.c <<EOF
1612 else if (link_info.shared)
1613 return "ldscripts/${EMULATION_NAME}.xs";
1616 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1617 cat >>e${EMULATION_NAME}.c <<EOF
1618 else if (link_info.combreloc && link_info.relro
1619 && (link_info.flags & DT_BIND_NOW))
1620 return "ldscripts/${EMULATION_NAME}.xw";
1621 else if (link_info.combreloc)
1622 return "ldscripts/${EMULATION_NAME}.xc";
1625 cat >>e${EMULATION_NAME}.c <<EOF
1627 return "ldscripts/${EMULATION_NAME}.x";
1634 if test -n "$PARSE_AND_LIST_ARGS_CASES" -o x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1636 if test -n "$PARSE_AND_LIST_PROLOGUE" ; then
1637 cat >>e${EMULATION_NAME}.c <<EOF
1638 $PARSE_AND_LIST_PROLOGUE
1642 cat >>e${EMULATION_NAME}.c <<EOF
1644 #define OPTION_DISABLE_NEW_DTAGS (400)
1645 #define OPTION_ENABLE_NEW_DTAGS (OPTION_DISABLE_NEW_DTAGS + 1)
1646 #define OPTION_GROUP (OPTION_ENABLE_NEW_DTAGS + 1)
1647 #define OPTION_EH_FRAME_HDR (OPTION_GROUP + 1)
1648 #define OPTION_EXCLUDE_LIBS (OPTION_EH_FRAME_HDR + 1)
1651 gld${EMULATION_NAME}_add_options
1652 (int ns, char **shortopts, int nl, struct option **longopts,
1653 int nrl ATTRIBUTE_UNUSED, struct option **really_longopts ATTRIBUTE_UNUSED)
1655 static const char xtra_short[] = "${PARSE_AND_LIST_SHORTOPTS}z:";
1656 static const struct option xtra_long[] = {
1659 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1660 cat >>e${EMULATION_NAME}.c <<EOF
1661 {"disable-new-dtags", no_argument, NULL, OPTION_DISABLE_NEW_DTAGS},
1662 {"enable-new-dtags", no_argument, NULL, OPTION_ENABLE_NEW_DTAGS},
1663 {"eh-frame-hdr", no_argument, NULL, OPTION_EH_FRAME_HDR},
1664 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
1665 {"Bgroup", no_argument, NULL, OPTION_GROUP},
1669 if test -n "$PARSE_AND_LIST_LONGOPTS" ; then
1670 cat >>e${EMULATION_NAME}.c <<EOF
1671 $PARSE_AND_LIST_LONGOPTS
1675 cat >>e${EMULATION_NAME}.c <<EOF
1676 {NULL, no_argument, NULL, 0}
1679 *shortopts = (char *) xrealloc (*shortopts, ns + sizeof (xtra_short));
1680 memcpy (*shortopts + ns, &xtra_short, sizeof (xtra_short));
1681 *longopts = (struct option *)
1682 xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
1683 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
1687 gld${EMULATION_NAME}_handle_option (int optc)
1696 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1697 cat >>e${EMULATION_NAME}.c <<EOF
1698 case OPTION_DISABLE_NEW_DTAGS:
1699 link_info.new_dtags = FALSE;
1702 case OPTION_ENABLE_NEW_DTAGS:
1703 link_info.new_dtags = TRUE;
1706 case OPTION_EH_FRAME_HDR:
1707 link_info.eh_frame_hdr = TRUE;
1711 link_info.flags_1 |= (bfd_vma) DF_1_GROUP;
1712 /* Groups must be self-contained. */
1713 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
1714 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
1717 case OPTION_EXCLUDE_LIBS:
1718 add_excluded_libs (optarg);
1722 if (strcmp (optarg, "initfirst") == 0)
1723 link_info.flags_1 |= (bfd_vma) DF_1_INITFIRST;
1724 else if (strcmp (optarg, "interpose") == 0)
1725 link_info.flags_1 |= (bfd_vma) DF_1_INTERPOSE;
1726 else if (strcmp (optarg, "loadfltr") == 0)
1727 link_info.flags_1 |= (bfd_vma) DF_1_LOADFLTR;
1728 else if (strcmp (optarg, "nodefaultlib") == 0)
1729 link_info.flags_1 |= (bfd_vma) DF_1_NODEFLIB;
1730 else if (strcmp (optarg, "nodelete") == 0)
1731 link_info.flags_1 |= (bfd_vma) DF_1_NODELETE;
1732 else if (strcmp (optarg, "nodlopen") == 0)
1733 link_info.flags_1 |= (bfd_vma) DF_1_NOOPEN;
1734 else if (strcmp (optarg, "nodump") == 0)
1735 link_info.flags_1 |= (bfd_vma) DF_1_NODUMP;
1736 else if (strcmp (optarg, "now") == 0)
1738 link_info.flags |= (bfd_vma) DF_BIND_NOW;
1739 link_info.flags_1 |= (bfd_vma) DF_1_NOW;
1741 else if (strcmp (optarg, "origin") == 0)
1743 link_info.flags |= (bfd_vma) DF_ORIGIN;
1744 link_info.flags_1 |= (bfd_vma) DF_1_ORIGIN;
1746 else if (strcmp (optarg, "defs") == 0)
1747 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
1748 else if (strcmp (optarg, "muldefs") == 0)
1749 link_info.allow_multiple_definition = TRUE;
1750 else if (strcmp (optarg, "combreloc") == 0)
1751 link_info.combreloc = TRUE;
1752 else if (strcmp (optarg, "nocombreloc") == 0)
1753 link_info.combreloc = FALSE;
1754 else if (strcmp (optarg, "nocopyreloc") == 0)
1755 link_info.nocopyreloc = TRUE;
1756 else if (strcmp (optarg, "execstack") == 0)
1758 link_info.execstack = TRUE;
1759 link_info.noexecstack = FALSE;
1761 else if (strcmp (optarg, "noexecstack") == 0)
1763 link_info.noexecstack = TRUE;
1764 link_info.execstack = FALSE;
1766 else if (strcmp (optarg, "relro") == 0)
1767 link_info.relro = TRUE;
1768 else if (strcmp (optarg, "norelro") == 0)
1769 link_info.relro = FALSE;
1770 /* What about the other Solaris -z options? FIXME. */
1775 if test -n "$PARSE_AND_LIST_ARGS_CASES" ; then
1776 cat >>e${EMULATION_NAME}.c <<EOF
1777 $PARSE_AND_LIST_ARGS_CASES
1781 cat >>e${EMULATION_NAME}.c <<EOF
1789 if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
1790 cat >>e${EMULATION_NAME}.c <<EOF
1793 gld${EMULATION_NAME}_list_options (FILE * file)
1797 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1798 cat >>e${EMULATION_NAME}.c <<EOF
1799 fprintf (file, _(" -Bgroup\t\tSelects group name lookup rules for DSO\n"));
1800 fprintf (file, _(" --disable-new-dtags\tDisable new dynamic tags\n"));
1801 fprintf (file, _(" --enable-new-dtags\tEnable new dynamic tags\n"));
1802 fprintf (file, _(" --eh-frame-hdr\tCreate .eh_frame_hdr section\n"));
1803 fprintf (file, _(" -z combreloc\t\tMerge dynamic relocs into one section and sort\n"));
1804 fprintf (file, _(" -z defs\t\tReport unresolved symbols in object files.\n"));
1805 fprintf (file, _(" -z execstack\t\tMark executable as requiring executable stack\n"));
1806 fprintf (file, _(" -z initfirst\t\tMark DSO to be initialized first at runtime\n"));
1807 fprintf (file, _(" -z interpose\t\tMark object to interpose all DSOs but executable\n"));
1808 fprintf (file, _(" -z loadfltr\t\tMark object requiring immediate process\n"));
1809 fprintf (file, _(" -z muldefs\t\tAllow multiple definitions\n"));
1810 fprintf (file, _(" -z nocombreloc\tDon't merge dynamic relocs into one section\n"));
1811 fprintf (file, _(" -z nocopyreloc\tDon't create copy relocs\n"));
1812 fprintf (file, _(" -z nodefaultlib\tMark object not to use default search paths\n"));
1813 fprintf (file, _(" -z nodelete\t\tMark DSO non-deletable at runtime\n"));
1814 fprintf (file, _(" -z nodlopen\t\tMark DSO not available to dlopen\n"));
1815 fprintf (file, _(" -z nodump\t\tMark DSO not available to dldump\n"));
1816 fprintf (file, _(" -z noexecstack\tMark executable as not requiring executable stack\n"));
1817 fprintf (file, _(" -z norelro\t\tDon't create RELRO program header\n"));
1818 fprintf (file, _(" -z now\t\tMark object non-lazy runtime binding\n"));
1819 fprintf (file, _(" -z origin\t\tMark object requiring immediate \$ORIGIN processing\n\t\t\t at runtime\n"));
1820 fprintf (file, _(" -z relro\t\tCreate RELRO program header\n"));
1821 fprintf (file, _(" -z KEYWORD\t\tIgnored for Solaris compatibility\n"));
1825 if test -n "$PARSE_AND_LIST_OPTIONS" ; then
1826 cat >>e${EMULATION_NAME}.c <<EOF
1827 $PARSE_AND_LIST_OPTIONS
1831 cat >>e${EMULATION_NAME}.c <<EOF
1835 if test -n "$PARSE_AND_LIST_EPILOGUE" ; then
1836 cat >>e${EMULATION_NAME}.c <<EOF
1837 $PARSE_AND_LIST_EPILOGUE
1842 cat >>e${EMULATION_NAME}.c <<EOF
1843 #define gld${EMULATION_NAME}_add_options NULL
1844 #define gld${EMULATION_NAME}_handle_option NULL
1846 if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
1847 cat >>e${EMULATION_NAME}.c <<EOF
1848 #define gld${EMULATION_NAME}_list_options NULL
1853 cat >>e${EMULATION_NAME}.c <<EOF
1855 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
1857 ${LDEMUL_BEFORE_PARSE-gld${EMULATION_NAME}_before_parse},
1858 ${LDEMUL_SYSLIB-syslib_default},
1859 ${LDEMUL_HLL-hll_default},
1860 ${LDEMUL_AFTER_PARSE-after_parse_default},
1861 ${LDEMUL_AFTER_OPEN-gld${EMULATION_NAME}_after_open},
1862 ${LDEMUL_AFTER_ALLOCATION-after_allocation_default},
1863 ${LDEMUL_SET_OUTPUT_ARCH-set_output_arch_default},
1864 ${LDEMUL_CHOOSE_TARGET-ldemul_default_target},
1865 ${LDEMUL_BEFORE_ALLOCATION-gld${EMULATION_NAME}_before_allocation},
1866 ${LDEMUL_GET_SCRIPT-gld${EMULATION_NAME}_get_script},
1867 "${EMULATION_NAME}",
1869 ${LDEMUL_FINISH-gld${EMULATION_NAME}_finish},
1870 ${LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS-NULL},
1871 ${LDEMUL_OPEN_DYNAMIC_ARCHIVE-gld${EMULATION_NAME}_open_dynamic_archive},
1872 ${LDEMUL_PLACE_ORPHAN-gld${EMULATION_NAME}_place_orphan},
1873 ${LDEMUL_SET_SYMBOLS-NULL},
1874 ${LDEMUL_PARSE_ARGS-NULL},
1875 gld${EMULATION_NAME}_add_options,
1876 gld${EMULATION_NAME}_handle_option,
1877 ${LDEMUL_UNRECOGNIZED_FILE-NULL},
1878 ${LDEMUL_LIST_OPTIONS-gld${EMULATION_NAME}_list_options},
1879 ${LDEMUL_RECOGNIZED_FILE-gld${EMULATION_NAME}_load_symbols},
1880 ${LDEMUL_FIND_POTENTIAL_LIBRARIES-NULL},
1881 ${LDEMUL_NEW_VERS_PATTERN-NULL}