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}
12 /* This file is is generated by a shell script. DO NOT EDIT! */
14 /* ${ELFSIZE} bit ELF emulation code for ${EMULATION_NAME}
15 Copyright 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
16 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
17 Written by Steve Chamberlain <sac@cygnus.com>
18 ELF support by Ian Lance Taylor <ian@cygnus.com>
20 This file is part of the GNU Binutils.
22 This program is free software; you can redistribute it and/or modify
23 it under the terms of the GNU General Public License as published by
24 the Free Software Foundation; either version 3 of the License, or
25 (at your option) any later version.
27 This program is distributed in the hope that it will be useful,
28 but WITHOUT ANY WARRANTY; without even the implied warranty of
29 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30 GNU General Public License for more details.
32 You should have received a copy of the GNU General Public License
33 along with this program; if not, write to the Free Software
34 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
35 MA 02110-1301, USA. */
37 #define TARGET_IS_${EMULATION_NAME}
41 #include "libiberty.h"
42 #include "safe-ctype.h"
58 #include "elf/common.h"
61 /* Declare functions used by various EXTRA_EM_FILEs. */
62 static void gld${EMULATION_NAME}_before_parse (void);
63 static void gld${EMULATION_NAME}_after_open (void);
64 static void gld${EMULATION_NAME}_before_allocation (void);
65 static lang_output_section_statement_type *gld${EMULATION_NAME}_place_orphan
66 (asection *, const char *, int);
67 static void gld${EMULATION_NAME}_finish (void);
71 if [ "x${USE_LIBPATH}" = xyes ] ; then
73 *-*-linux-* | *-*-k*bsd*-*)
83 # Import any needed special functions and/or overrides.
85 source_em ${srcdir}/emultempl/elf-generic.em
86 if test -n "$EXTRA_EM_FILE" ; then
87 source_em ${srcdir}/emultempl/${EXTRA_EM_FILE}.em
90 # Functions in this file can be overridden by setting the LDEMUL_* shell
91 # variables. If the name of the overriding function is the same as is
92 # defined in this file, then don't output this file's version.
93 # If a different overriding name is given then output the standard function
94 # as presumably it is called from the overriding function.
96 if test x"$LDEMUL_BEFORE_PARSE" != xgld"$EMULATION_NAME"_before_parse; then
100 gld${EMULATION_NAME}_before_parse (void)
102 ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
103 config.dynamic_link = ${DYNAMIC_LINK-TRUE};
104 config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo TRUE ; else echo FALSE ; fi`;
110 if test x"$LDEMUL_RECOGNIZED_FILE" != xgld"${EMULATION_NAME}"_load_symbols; then
112 /* Handle as_needed DT_NEEDED. */
115 gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *entry)
119 /* Tell the ELF linker that we don't want the output file to have a
120 DT_NEEDED entry for this file, unless it is used to resolve
121 references in a regular object. */
122 if (entry->as_needed)
123 class = DYN_AS_NEEDED;
125 /* Tell the ELF linker that we don't want the output file to have a
126 DT_NEEDED entry for any dynamic library in DT_NEEDED tags from
128 if (!entry->add_needed)
129 class |= DYN_NO_ADD_NEEDED;
131 if (entry->just_syms_flag
132 && (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) != 0)
133 einfo (_("%P%F: --just-symbols may not be used on DSO: %B\n"),
137 || (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) == 0)
140 bfd_elf_set_dyn_lib_class (entry->the_bfd, class);
142 /* Continue on with normal load_symbols processing. */
150 /* These variables are required to pass information back and forth
151 between after_open and check_needed and stat_needed and vercheck. */
153 static struct bfd_link_needed_list *global_needed;
154 static struct stat global_stat;
155 static lang_input_statement_type *global_found;
156 static struct bfd_link_needed_list *global_vercheck_needed;
157 static bfd_boolean global_vercheck_failed;
160 /* On Linux, it's possible to have different versions of the same
161 shared library linked against different versions of libc. The
162 dynamic linker somehow tags which libc version to use in
163 /etc/ld.so.cache, and, based on the libc that it sees in the
164 executable, chooses which version of the shared library to use.
166 We try to do a similar check here by checking whether this shared
167 library needs any other shared libraries which may conflict with
168 libraries we have already included in the link. If it does, we
169 skip it, and try to find another shared library farther on down the
172 This is called via lang_for_each_input_file.
173 GLOBAL_VERCHECK_NEEDED is the list of objects needed by the object
174 which we are checking. This sets GLOBAL_VERCHECK_FAILED if we find
175 a conflicting version. */
178 gld${EMULATION_NAME}_vercheck (lang_input_statement_type *s)
181 struct bfd_link_needed_list *l;
183 if (global_vercheck_failed)
185 if (s->the_bfd == NULL
186 || (bfd_get_file_flags (s->the_bfd) & DYNAMIC) == 0)
189 soname = bfd_elf_get_dt_soname (s->the_bfd);
191 soname = lbasename (bfd_get_filename (s->the_bfd));
193 for (l = global_vercheck_needed; l != NULL; l = l->next)
197 if (strcmp (soname, l->name) == 0)
199 /* Probably can't happen, but it's an easy check. */
203 if (strchr (l->name, '/') != NULL)
206 suffix = strstr (l->name, ".so.");
210 suffix += sizeof ".so." - 1;
212 if (strncmp (soname, l->name, suffix - l->name) == 0)
214 /* Here we know that S is a dynamic object FOO.SO.VER1, and
215 the object we are considering needs a dynamic object
216 FOO.SO.VER2, and VER1 and VER2 are different. This
217 appears to be a version mismatch, so we tell the caller
218 to try a different version of this library. */
219 global_vercheck_failed = TRUE;
226 /* See if an input file matches a DT_NEEDED entry by running stat on
230 gld${EMULATION_NAME}_stat_needed (lang_input_statement_type *s)
236 if (global_found != NULL)
238 if (s->the_bfd == NULL)
241 /* If this input file was an as-needed entry, and wasn't found to be
242 needed at the stage it was linked, then don't say we have loaded it. */
243 if ((bfd_elf_get_dyn_lib_class (s->the_bfd) & DYN_AS_NEEDED) != 0)
246 if (bfd_stat (s->the_bfd, &st) != 0)
248 einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd);
252 /* Some operating systems, e.g. Windows, do not provide a meaningful
253 st_ino; they always set it to zero. (Windows does provide a
254 meaningful st_dev.) Do not indicate a duplicate library in that
255 case. While there is no guarantee that a system that provides
256 meaningful inode numbers will never set st_ino to zero, this is
257 merely an optimization, so we do not need to worry about false
259 if (st.st_dev == global_stat.st_dev
260 && st.st_ino == global_stat.st_ino
267 /* We issue a warning if it looks like we are including two
268 different versions of the same shared library. For example,
269 there may be a problem if -lc picks up libc.so.6 but some other
270 shared library has a DT_NEEDED entry of libc.so.5. This is a
271 heuristic test, and it will only work if the name looks like
272 NAME.so.VERSION. FIXME: Depending on file names is error-prone.
273 If we really want to issue warnings about mixing version numbers
274 of shared libraries, we need to find a better way. */
276 if (strchr (global_needed->name, '/') != NULL)
278 suffix = strstr (global_needed->name, ".so.");
281 suffix += sizeof ".so." - 1;
283 soname = bfd_elf_get_dt_soname (s->the_bfd);
285 soname = lbasename (s->filename);
287 if (strncmp (soname, global_needed->name, suffix - global_needed->name) == 0)
288 einfo ("%P: warning: %s, needed by %B, may conflict with %s\n",
289 global_needed->name, global_needed->by, soname);
298 /* This function is called for each possible name for a dynamic object
299 named by a DT_NEEDED entry. The FORCE parameter indicates whether
300 to skip the check for a conflicting version. */
303 gld${EMULATION_NAME}_try_needed (struct dt_needed *needed,
307 const char *name = needed->name;
311 abfd = bfd_openr (name, bfd_get_target (link_info.output_bfd));
314 if (! bfd_check_format (abfd, bfd_object))
319 if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0)
325 /* For DT_NEEDED, they have to match. */
326 if (abfd->xvec != link_info.output_bfd->xvec)
332 /* Check whether this object would include any conflicting library
333 versions. If FORCE is set, then we skip this check; we use this
334 the second time around, if we couldn't find any compatible
335 instance of the shared library. */
339 struct bfd_link_needed_list *needed;
341 if (! bfd_elf_get_bfd_needed_list (abfd, &needed))
342 einfo ("%F%P:%B: bfd_elf_get_bfd_needed_list failed: %E\n", abfd);
346 global_vercheck_needed = needed;
347 global_vercheck_failed = FALSE;
348 lang_for_each_input_file (gld${EMULATION_NAME}_vercheck);
349 if (global_vercheck_failed)
352 /* Return FALSE to force the caller to move on to try
353 another file on the search path. */
357 /* But wait! It gets much worse. On Linux, if a shared
358 library does not use libc at all, we are supposed to skip
359 it the first time around in case we encounter a shared
360 library later on with the same name which does use the
361 version of libc that we want. This is much too horrible
362 to use on any system other than Linux. */
366 *-*-linux-* | *-*-k*bsd*-*)
369 struct bfd_link_needed_list *l;
371 for (l = needed; l != NULL; l = l->next)
372 if (CONST_STRNEQ (l->name, "libc.so"))
388 /* We've found a dynamic object matching the DT_NEEDED entry. */
390 /* We have already checked that there is no other input file of the
391 same name. We must now check again that we are not including the
392 same file twice. We need to do this because on many systems
393 libc.so is a symlink to, e.g., libc.so.1. The SONAME entry will
394 reference libc.so.1. If we have already included libc.so, we
395 don't want to include libc.so.1 if they are the same file, and we
396 can only check that using stat. */
398 if (bfd_stat (abfd, &global_stat) != 0)
399 einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd);
401 /* First strip off everything before the last '/'. */
402 soname = lbasename (abfd->filename);
404 if (trace_file_tries)
405 info_msg (_("found %s at %s\n"), soname, name);
408 lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed);
409 if (global_found != NULL)
411 /* Return TRUE to indicate that we found the file, even though
412 we aren't going to do anything with it. */
416 /* Specify the soname to use. */
417 bfd_elf_set_dt_needed_name (abfd, soname);
419 /* Tell the ELF linker that we don't want the output file to have a
420 DT_NEEDED entry for this file, unless it is used to resolve
421 references in a regular object. */
422 class = DYN_DT_NEEDED;
424 /* Tell the ELF linker that we don't want the output file to have a
425 DT_NEEDED entry for this file at all if the entry is from a file
426 with DYN_NO_ADD_NEEDED. */
427 if (needed->by != NULL
428 && (bfd_elf_get_dyn_lib_class (needed->by) & DYN_NO_ADD_NEEDED) != 0)
429 class |= DYN_NO_NEEDED | DYN_NO_ADD_NEEDED;
431 bfd_elf_set_dyn_lib_class (abfd, class);
433 /* Add this file into the symbol table. */
434 if (! bfd_link_add_symbols (abfd, &link_info))
435 einfo ("%F%B: could not read symbols: %E\n", abfd);
441 /* Search for a needed file in a path. */
444 gld${EMULATION_NAME}_search_needed (const char *path,
445 struct dt_needed *n, int force)
448 const char *name = n->name;
450 struct dt_needed needed;
453 return gld${EMULATION_NAME}_try_needed (n, force);
455 if (path == NULL || *path == '\0')
459 needed.name = n->name;
464 char *filename, *sset;
466 s = strchr (path, config.rpath_separator);
468 s = path + strlen (path);
470 filename = (char *) xmalloc (s - path + len + 2);
475 memcpy (filename, path, s - path);
476 filename[s - path] = '/';
477 sset = filename + (s - path) + 1;
481 needed.name = filename;
482 if (gld${EMULATION_NAME}_try_needed (&needed, force))
496 if [ "x${USE_LIBPATH}" = xyes ] ; then
499 /* Add the sysroot to every entry in a path separated by
500 config.rpath_separator. */
503 gld${EMULATION_NAME}_add_sysroot (const char *path)
512 if (path[i++] == config.rpath_separator)
518 len = len + (colons + 1) * strlen (ld_sysroot);
519 ret = xmalloc (len + 1);
520 strcpy (ret, ld_sysroot);
521 p = ret + strlen (ret);
524 if (path[i] == config.rpath_separator)
527 strcpy (p, ld_sysroot);
539 *-*-freebsd* | *-*-dragonfly*)
541 /* Read the system search path the FreeBSD way rather than the Linux way. */
542 #ifdef HAVE_ELF_HINTS_H
543 #include <elf-hints.h>
545 #include "elf-hints-local.h"
549 gld${EMULATION_NAME}_check_ld_elf_hints (const char *name, int force)
551 static bfd_boolean initialized;
552 static char *ld_elf_hints;
553 struct dt_needed needed;
560 tmppath = concat (ld_sysroot, _PATH_ELF_HINTS, (const char *) NULL);
561 f = fopen (tmppath, FOPEN_RB);
565 struct elfhints_hdr hdr;
567 if (fread (&hdr, 1, sizeof (hdr), f) == sizeof (hdr)
568 && hdr.magic == ELFHINTS_MAGIC
571 if (fseek (f, hdr.strtab + hdr.dirlist, SEEK_SET) != -1)
575 b = xmalloc (hdr.dirlistlen + 1);
576 if (fread (b, 1, hdr.dirlistlen + 1, f) ==
578 ld_elf_hints = gld${EMULATION_NAME}_add_sysroot (b);
589 if (ld_elf_hints == NULL)
594 return gld${EMULATION_NAME}_search_needed (ld_elf_hints, & needed,
601 *-*-linux-* | *-*-k*bsd*-*)
603 /* For a native linker, check the file /etc/ld.so.conf for directories
604 in which we may find shared libraries. /etc/ld.so.conf is really
605 only meaningful on Linux. */
607 struct gld${EMULATION_NAME}_ld_so_conf
614 gld${EMULATION_NAME}_parse_ld_so_conf
615 (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename);
618 gld${EMULATION_NAME}_parse_ld_so_conf_include
619 (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename,
627 if (pattern[0] != '/')
629 char *p = strrchr (filename, '/');
630 size_t patlen = strlen (pattern) + 1;
632 newp = xmalloc (p - filename + 1 + patlen);
633 memcpy (newp, filename, p - filename + 1);
634 memcpy (newp + (p - filename + 1), pattern, patlen);
639 if (glob (pattern, 0, NULL, &gl) == 0)
643 for (i = 0; i < gl.gl_pathc; ++i)
644 gld${EMULATION_NAME}_parse_ld_so_conf (info, gl.gl_pathv[i]);
648 /* If we do not have glob, treat the pattern as a literal filename. */
649 gld${EMULATION_NAME}_parse_ld_so_conf (info, pattern);
657 gld${EMULATION_NAME}_parse_ld_so_conf
658 (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename)
660 FILE *f = fopen (filename, FOPEN_RT);
668 line = xmalloc (linelen);
673 /* Normally this would use getline(3), but we need to be portable. */
674 while ((q = fgets (p, linelen - (p - line), f)) != NULL
675 && strlen (q) == linelen - (p - line) - 1
676 && line[linelen - 2] != '\n')
678 line = xrealloc (line, 2 * linelen);
679 p = line + linelen - 1;
683 if (q == NULL && p == line)
686 p = strchr (line, '\n');
690 /* Because the file format does not know any form of quoting we
691 can search forward for the next '#' character and if found
692 make it terminating the line. */
693 p = strchr (line, '#');
697 /* Remove leading whitespace. NUL is no whitespace character. */
699 while (*p == ' ' || *p == '\f' || *p == '\r' || *p == '\t' || *p == '\v')
702 /* If the line is blank it is ignored. */
706 if (CONST_STRNEQ (p, "include") && (p[7] == ' ' || p[7] == '\t'))
712 while (*p == ' ' || *p == '\t')
720 while (*p != ' ' && *p != '\t' && *p)
726 gld${EMULATION_NAME}_parse_ld_so_conf_include (info, filename,
734 while (*p && *p != '=' && *p != ' ' && *p != '\t' && *p != '\f'
735 && *p != '\r' && *p != '\v')
738 while (p != dir && p[-1] == '/')
740 if (info->path == NULL)
742 info->alloc = p - dir + 1 + 256;
743 info->path = xmalloc (info->alloc);
748 if (info->len + 1 + (p - dir) >= info->alloc)
750 info->alloc += p - dir + 256;
751 info->path = xrealloc (info->path, info->alloc);
753 info->path[info->len++] = config.rpath_separator;
755 memcpy (info->path + info->len, dir, p - dir);
756 info->len += p - dir;
757 info->path[info->len] = '\0';
767 gld${EMULATION_NAME}_check_ld_so_conf (const char *name, int force)
769 static bfd_boolean initialized;
770 static char *ld_so_conf;
771 struct dt_needed needed;
776 struct gld${EMULATION_NAME}_ld_so_conf info;
779 info.len = info.alloc = 0;
780 tmppath = concat (ld_sysroot, "${prefix}/etc/ld.so.conf",
781 (const char *) NULL);
782 if (!gld${EMULATION_NAME}_parse_ld_so_conf (&info, tmppath))
785 tmppath = concat (ld_sysroot, "/etc/ld.so.conf",
786 (const char *) NULL);
787 gld${EMULATION_NAME}_parse_ld_so_conf (&info, tmppath);
793 char *d = gld${EMULATION_NAME}_add_sysroot (info.path);
800 if (ld_so_conf == NULL)
806 return gld${EMULATION_NAME}_search_needed (ld_so_conf, &needed, force);
816 /* See if an input file matches a DT_NEEDED entry by name. */
819 gld${EMULATION_NAME}_check_needed (lang_input_statement_type *s)
823 /* Stop looking if we've found a loaded lib. */
824 if (global_found != NULL
825 && (bfd_elf_get_dyn_lib_class (global_found->the_bfd)
826 & DYN_AS_NEEDED) == 0)
829 if (s->filename == NULL || s->the_bfd == NULL)
832 /* Don't look for a second non-loaded as-needed lib. */
833 if (global_found != NULL
834 && (bfd_elf_get_dyn_lib_class (s->the_bfd) & DYN_AS_NEEDED) != 0)
837 if (strcmp (s->filename, global_needed->name) == 0)
843 if (s->search_dirs_flag)
845 const char *f = strrchr (s->filename, '/');
847 && strcmp (f + 1, global_needed->name) == 0)
854 soname = bfd_elf_get_dt_soname (s->the_bfd);
856 && strcmp (soname, global_needed->name) == 0)
865 if test x"$LDEMUL_AFTER_OPEN" != xgld"$EMULATION_NAME"_after_open; then
869 gld${EMULATION_NAME}_id_note_section_size (bfd *abfd,
870 struct bfd_link_info *link_info)
872 const char *style = link_info->emit_note_gnu_build_id;
877 size = offsetof (Elf_External_Note, name[sizeof "GNU"]);
878 size = (size + 3) & -(bfd_size_type) 4;
880 if (!strcmp (style, "md5") || !strcmp (style, "uuid"))
882 else if (!strcmp (style, "sha1"))
884 else if (!strncmp (style, "0x", 2))
886 /* ID is in string form (hex). Convert to bits. */
887 const char *id = style + 2;
890 if (ISXDIGIT (id[0]) && ISXDIGIT (id[1]))
895 else if (*id == '-' || *id == ':')
902 } while (*id != '\0');
911 read_hex (const char xdigit)
913 if (ISDIGIT (xdigit))
915 if (ISUPPER (xdigit))
916 return xdigit - 'A' + 0xa;
917 if (ISLOWER (xdigit))
918 return xdigit - 'a' + 0xa;
930 gld${EMULATION_NAME}_write_build_id_section (bfd *abfd)
932 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
933 struct build_id_info *info =
934 elf_tdata (abfd)->after_write_object_contents_info;
936 Elf_Internal_Shdr *i_shdr;
937 unsigned char *contents, *id_bits;
939 Elf_External_Note *e_note;
942 if (bfd_is_abs_section (asec->output_section))
944 einfo (_("%P: warning: .note.gnu.build-id section discarded,"
945 " --build-id ignored.\n"));
948 i_shdr = &elf_section_data (asec->output_section)->this_hdr;
950 if (i_shdr->contents == NULL)
952 if (asec->contents == NULL)
953 asec->contents = xmalloc (asec->size);
954 contents = asec->contents;
957 contents = i_shdr->contents + asec->output_offset;
959 e_note = (void *) contents;
960 size = offsetof (Elf_External_Note, name[sizeof "GNU"]);
961 size = (size + 3) & -(bfd_size_type) 4;
962 id_bits = contents + size;
963 size = asec->size - size;
965 bfd_h_put_32 (abfd, sizeof "GNU", &e_note->namesz);
966 bfd_h_put_32 (abfd, size, &e_note->descsz);
967 bfd_h_put_32 (abfd, NT_GNU_BUILD_ID, &e_note->type);
968 memcpy (e_note->name, "GNU", sizeof "GNU");
970 if (!strcmp (info->style, "md5"))
974 if (bed->s->checksum_contents (abfd,
975 (void (*) (const void *, size_t, void *))
978 md5_finish_ctx (&ctx, id_bits);
982 else if (!strcmp (info->style, "sha1"))
985 sha1_init_ctx (&ctx);
986 if (bed->s->checksum_contents (abfd,
987 (void (*) (const void *, size_t, void *))
990 sha1_finish_ctx (&ctx, id_bits);
994 else if (!strcmp (info->style, "uuid"))
997 int fd = open ("/dev/urandom", O_RDONLY);
1000 n = read (fd, id_bits, size);
1005 else if (!strncmp (info->style, "0x", 2))
1007 /* ID is in string form (hex). Convert to bits. */
1008 const char *id = info->style + 2;
1012 if (ISXDIGIT (id[0]) && ISXDIGIT (id[1]))
1014 id_bits[n] = read_hex (*id++) << 4;
1015 id_bits[n++] |= read_hex (*id++);
1017 else if (*id == '-' || *id == ':')
1020 abort (); /* Should have been validated earlier. */
1021 } while (*id != '\0');
1024 abort (); /* Should have been validated earlier. */
1027 return (bfd_seek (abfd,
1028 i_shdr->sh_offset + asec->output_offset, SEEK_SET) == 0
1029 && bfd_bwrite (contents, size, abfd) == size);
1033 /* This is called after all the input files have been opened. */
1036 gld${EMULATION_NAME}_after_open (void)
1038 struct bfd_link_needed_list *needed, *l;
1039 struct elf_link_hash_table *htab;
1041 htab = elf_hash_table (&link_info);
1042 if (!is_elf_hash_table (htab))
1045 if (link_info.emit_note_gnu_build_id)
1051 abfd = link_info.input_bfds;
1053 size = gld${EMULATION_NAME}_id_note_section_size (abfd, &link_info);
1056 einfo ("%P: warning: unrecognized --build-id style ignored.\n");
1057 free (link_info.emit_note_gnu_build_id);
1058 link_info.emit_note_gnu_build_id = NULL;
1062 s = bfd_make_section_with_flags (abfd, ".note.gnu.build-id",
1063 SEC_ALLOC | SEC_LOAD
1064 | SEC_IN_MEMORY | SEC_LINKER_CREATED
1065 | SEC_READONLY | SEC_DATA);
1066 if (s != NULL && bfd_set_section_alignment (abfd, s, 2))
1068 struct elf_obj_tdata *t = elf_tdata (link_info.output_bfd);
1069 struct build_id_info *b = xmalloc (sizeof *b);
1070 b->style = link_info.emit_note_gnu_build_id;
1072 elf_section_type (s) = SHT_NOTE;
1074 t->after_write_object_contents
1075 = &gld${EMULATION_NAME}_write_build_id_section;
1076 t->after_write_object_contents_info = b;
1080 einfo ("%P: warning: Cannot create .note.gnu.build-id section,"
1081 " --build-id ignored.\n");
1082 free (link_info.emit_note_gnu_build_id);
1083 link_info.emit_note_gnu_build_id = NULL;
1088 if (link_info.relocatable)
1091 if (link_info.eh_frame_hdr
1092 && !link_info.traditional_format)
1097 for (abfd = link_info.input_bfds; abfd; abfd = abfd->link_next)
1099 s = bfd_get_section_by_name (abfd, ".eh_frame");
1100 if (s && s->size > 8 && !bfd_is_abs_section (s->output_section))
1105 const struct elf_backend_data *bed;
1107 bed = get_elf_backend_data (abfd);
1108 s = bfd_make_section_with_flags (abfd, ".eh_frame_hdr",
1109 bed->dynamic_sec_flags
1112 && bfd_set_section_alignment (abfd, s, 2))
1113 htab->eh_info.hdr_sec = s;
1115 einfo ("%P: warning: Cannot create .eh_frame_hdr section,"
1116 " --eh-frame-hdr ignored.\n");
1120 /* Get the list of files which appear in DT_NEEDED entries in
1121 dynamic objects included in the link (often there will be none).
1122 For each such file, we want to track down the corresponding
1123 library, and include the symbol table in the link. This is what
1124 the runtime dynamic linker will do. Tracking the files down here
1125 permits one dynamic object to include another without requiring
1126 special action by the person doing the link. Note that the
1127 needed list can actually grow while we are stepping through this
1129 if (!link_info.executable)
1131 needed = bfd_elf_get_needed_list (link_info.output_bfd, &link_info);
1132 for (l = needed; l != NULL; l = l->next)
1134 struct bfd_link_needed_list *ll;
1135 struct dt_needed n, nn;
1138 /* If the lib that needs this one was --as-needed and wasn't
1139 found to be needed, then this lib isn't needed either. */
1141 && (bfd_elf_get_dyn_lib_class (l->by) & DYN_AS_NEEDED) != 0)
1144 /* If we've already seen this file, skip it. */
1145 for (ll = needed; ll != l; ll = ll->next)
1147 || (bfd_elf_get_dyn_lib_class (ll->by) & DYN_AS_NEEDED) == 0)
1148 && strcmp (ll->name, l->name) == 0)
1153 /* See if this file was included in the link explicitly. */
1155 global_found = NULL;
1156 lang_for_each_input_file (gld${EMULATION_NAME}_check_needed);
1157 if (global_found != NULL
1158 && (bfd_elf_get_dyn_lib_class (global_found->the_bfd)
1159 & DYN_AS_NEEDED) == 0)
1165 if (trace_file_tries)
1166 info_msg (_("%s needed by %B\n"), l->name, l->by);
1168 /* As-needed libs specified on the command line (or linker script)
1169 take priority over libs found in search dirs. */
1170 if (global_found != NULL)
1172 nn.name = global_found->filename;
1173 if (gld${EMULATION_NAME}_try_needed (&nn, TRUE))
1177 /* We need to find this file and include the symbol table. We
1178 want to search for the file in the same way that the dynamic
1179 linker will search. That means that we want to use
1180 rpath_link, rpath, then the environment variable
1181 LD_LIBRARY_PATH (native only), then the DT_RPATH/DT_RUNPATH
1182 entries (native only), then the linker script LIB_SEARCH_DIRS.
1183 We do not search using the -L arguments.
1185 We search twice. The first time, we skip objects which may
1186 introduce version mismatches. The second time, we force
1187 their use. See gld${EMULATION_NAME}_vercheck comment. */
1188 for (force = 0; force < 2; force++)
1191 search_dirs_type *search;
1193 if [ "x${NATIVE}" = xyes ] ; then
1195 const char *lib_path;
1198 if [ "x${USE_LIBPATH}" = xyes ] ; then
1200 struct bfd_link_needed_list *rp;
1206 if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link,
1210 if [ "x${USE_LIBPATH}" = xyes ] ; then
1212 if (gld${EMULATION_NAME}_search_needed (command_line.rpath,
1217 if [ "x${NATIVE}" = xyes ] ; then
1219 if (command_line.rpath_link == NULL
1220 && command_line.rpath == NULL)
1222 lib_path = (const char *) getenv ("LD_RUN_PATH");
1223 if (gld${EMULATION_NAME}_search_needed (lib_path, &n,
1227 lib_path = (const char *) getenv ("LD_LIBRARY_PATH");
1228 if (gld${EMULATION_NAME}_search_needed (lib_path, &n, force))
1232 if [ "x${USE_LIBPATH}" = xyes ] ; then
1235 rp = bfd_elf_get_runpath_list (link_info.output_bfd, &link_info);
1236 for (; !found && rp != NULL; rp = rp->next)
1238 char *tmpname = gld${EMULATION_NAME}_add_sysroot (rp->name);
1239 found = (rp->by == l->by
1240 && gld${EMULATION_NAME}_search_needed (tmpname,
1250 if [ "x${USE_LIBPATH}" = xyes ] ; then
1252 *-*-freebsd* | *-*-dragonfly*)
1254 if (gld${EMULATION_NAME}_check_ld_elf_hints (l->name, force))
1260 *-*-linux-* | *-*-k*bsd*-*)
1263 if (gld${EMULATION_NAME}_check_ld_so_conf (l->name, force))
1271 len = strlen (l->name);
1272 for (search = search_head; search != NULL; search = search->next)
1276 if (search->cmdline)
1278 filename = (char *) xmalloc (strlen (search->name) + len + 2);
1279 sprintf (filename, "%s/%s", search->name, l->name);
1281 if (gld${EMULATION_NAME}_try_needed (&nn, force))
1294 einfo ("%P: warning: %s, needed by %B, not found (try using -rpath or -rpath-link)\n",
1304 /* Look through an expression for an assignment statement. */
1307 gld${EMULATION_NAME}_find_exp_assignment (etree_type *exp)
1309 bfd_boolean provide = FALSE;
1311 switch (exp->type.node_class)
1317 /* We call record_link_assignment even if the symbol is defined.
1318 This is because if it is defined by a dynamic object, we
1319 actually want to use the value defined by the linker script,
1320 not the value from the dynamic object (because we are setting
1321 symbols like etext). If the symbol is defined by a regular
1322 object, then, as it happens, calling record_link_assignment
1324 if (strcmp (exp->assign.dst, ".") != 0)
1326 if (!bfd_elf_record_link_assignment (link_info.output_bfd,
1328 exp->assign.dst, provide,
1329 exp->assign.hidden))
1330 einfo ("%P%F: failed to record assignment to %s: %E\n",
1333 gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src);
1337 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs);
1338 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs);
1342 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond);
1343 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs);
1344 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs);
1348 gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child);
1357 /* This is called by the before_allocation routine via
1358 lang_for_each_statement. It locates any assignment statements, and
1359 tells the ELF backend about them, in case they are assignments to
1360 symbols which are referred to by dynamic objects. */
1363 gld${EMULATION_NAME}_find_statement_assignment (lang_statement_union_type *s)
1365 if (s->header.type == lang_assignment_statement_enum)
1366 gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp);
1371 if test x"$LDEMUL_BEFORE_ALLOCATION" != xgld"$EMULATION_NAME"_before_allocation; then
1372 if test x"${ELF_INTERPRETER_NAME+set}" = xset; then
1373 ELF_INTERPRETER_SET_DEFAULT="
1374 if (sinterp != NULL)
1376 sinterp->contents = (unsigned char *) ${ELF_INTERPRETER_NAME};
1377 sinterp->size = strlen ((char *) sinterp->contents) + 1;
1382 ELF_INTERPRETER_SET_DEFAULT=
1386 /* This is called after the sections have been attached to output
1387 sections, but before any sizes or addresses have been set. */
1390 gld${EMULATION_NAME}_before_allocation (void)
1395 if (link_info.hash->type == bfd_link_elf_hash_table)
1396 _bfd_elf_tls_setup (link_info.output_bfd, &link_info);
1398 /* If we are going to make any variable assignments, we need to let
1399 the ELF backend know about them in case the variables are
1400 referred to by dynamic objects. */
1401 lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment);
1403 /* Let the ELF backend work out the sizes of any sections required
1404 by dynamic linking. */
1405 rpath = command_line.rpath;
1407 rpath = (const char *) getenv ("LD_RUN_PATH");
1408 if (! (bfd_elf_size_dynamic_sections
1409 (link_info.output_bfd, command_line.soname, rpath,
1410 command_line.filter_shlib,
1411 (const char * const *) command_line.auxiliary_filters,
1412 &link_info, &sinterp, lang_elf_version_info)))
1413 einfo ("%P%F: failed to set dynamic section sizes: %E\n");
1415 ${ELF_INTERPRETER_SET_DEFAULT}
1416 /* Let the user override the dynamic linker we are using. */
1417 if (command_line.interpreter != NULL
1420 sinterp->contents = (bfd_byte *) command_line.interpreter;
1421 sinterp->size = strlen (command_line.interpreter) + 1;
1424 /* Look for any sections named .gnu.warning. As a GNU extensions,
1425 we treat such sections as containing warning messages. We print
1426 out the warning message, and then zero out the section size so
1427 that it does not get copied into the output file. */
1430 LANG_FOR_EACH_INPUT_STATEMENT (is)
1437 if (is->just_syms_flag)
1440 s = bfd_get_section_by_name (is->the_bfd, ".gnu.warning");
1445 msg = xmalloc ((size_t) (sz + 1));
1446 if (! bfd_get_section_contents (is->the_bfd, s, msg,
1448 einfo ("%F%B: Can't read contents of section .gnu.warning: %E\n",
1451 ret = link_info.callbacks->warning (&link_info, msg,
1452 (const char *) NULL,
1453 is->the_bfd, (asection *) NULL,
1458 /* Clobber the section size, so that we don't waste space
1459 copying the warning into the output file. If we've already
1460 sized the output section, adjust its size. The adjustment
1461 is on rawsize because targets that size sections early will
1462 have called lang_reset_memory_regions after sizing. */
1463 if (s->output_section != NULL
1464 && s->output_section->rawsize >= s->size)
1465 s->output_section->rawsize -= s->size;
1469 /* Also set SEC_EXCLUDE, so that local symbols defined in the
1470 warning section don't get copied to the output. */
1471 s->flags |= SEC_EXCLUDE | SEC_KEEP;
1475 before_allocation_default ();
1477 if (!bfd_elf_size_dynsym_hash_dynstr (link_info.output_bfd, &link_info))
1478 einfo ("%P%F: failed to set dynamic section sizes: %E\n");
1484 if test x"$LDEMUL_OPEN_DYNAMIC_ARCHIVE" != xgld"$EMULATION_NAME"_open_dynamic_archive; then
1487 /* Try to open a dynamic archive. This is where we know that ELF
1488 dynamic libraries have an extension of .so (or .sl on oddball systems
1492 gld${EMULATION_NAME}_open_dynamic_archive
1493 (const char *arch, search_dirs_type *search, lang_input_statement_type *entry)
1495 const char *filename;
1498 if (! entry->is_archive)
1501 filename = entry->filename;
1503 /* This allocates a few bytes too many when EXTRA_SHLIB_EXTENSION
1504 is defined, but it does not seem worth the headache to optimize
1505 away those two bytes of space. */
1506 string = (char *) xmalloc (strlen (search->name)
1509 #ifdef EXTRA_SHLIB_EXTENSION
1510 + strlen (EXTRA_SHLIB_EXTENSION)
1512 + sizeof "/lib.so");
1514 sprintf (string, "%s/lib%s%s.so", search->name, filename, arch);
1516 #ifdef EXTRA_SHLIB_EXTENSION
1517 /* Try the .so extension first. If that fails build a new filename
1518 using EXTRA_SHLIB_EXTENSION. */
1519 if (! ldfile_try_open_bfd (string, entry))
1521 sprintf (string, "%s/lib%s%s%s", search->name,
1522 filename, arch, EXTRA_SHLIB_EXTENSION);
1525 if (! ldfile_try_open_bfd (string, entry))
1530 #ifdef EXTRA_SHLIB_EXTENSION
1534 entry->filename = string;
1536 /* We have found a dynamic object to include in the link. The ELF
1537 backend linker will create a DT_NEEDED entry in the .dynamic
1538 section naming this file. If this file includes a DT_SONAME
1539 entry, it will be used. Otherwise, the ELF linker will just use
1540 the name of the file. For an archive found by searching, like
1541 this one, the DT_NEEDED entry should consist of just the name of
1542 the file, without the path information used to find it. Note
1543 that we only need to do this if we have a dynamic object; an
1544 archive will never be referenced by a DT_NEEDED entry.
1546 FIXME: This approach--using bfd_elf_set_dt_needed_name--is not
1547 very pretty. I haven't been able to think of anything that is
1549 if (bfd_check_format (entry->the_bfd, bfd_object)
1550 && (entry->the_bfd->flags & DYNAMIC) != 0)
1552 ASSERT (entry->is_archive && entry->search_dirs_flag);
1554 /* Rather than duplicating the logic above. Just use the
1555 filename we recorded earlier. */
1557 filename = lbasename (entry->filename);
1558 bfd_elf_set_dt_needed_name (entry->the_bfd, filename);
1567 if test x"$LDEMUL_PLACE_ORPHAN" != xgld"$EMULATION_NAME"_place_orphan; then
1570 /* A variant of lang_output_section_find used by place_orphan. */
1572 static lang_output_section_statement_type *
1573 output_rel_find (asection *sec, int isdyn)
1575 lang_output_section_statement_type *lookup;
1576 lang_output_section_statement_type *last = NULL;
1577 lang_output_section_statement_type *last_alloc = NULL;
1578 lang_output_section_statement_type *last_ro_alloc = NULL;
1579 lang_output_section_statement_type *last_rel = NULL;
1580 lang_output_section_statement_type *last_rel_alloc = NULL;
1581 int rela = sec->name[4] == 'a';
1583 for (lookup = &lang_output_section_statement.head->output_section_statement;
1585 lookup = lookup->next)
1587 if (lookup->constraint >= 0
1588 && CONST_STRNEQ (lookup->name, ".rel"))
1590 int lookrela = lookup->name[4] == 'a';
1592 /* .rel.dyn must come before all other reloc sections, to suit
1597 /* Don't place after .rel.plt as doing so results in wrong
1599 if (strcmp (".plt", lookup->name + 4 + lookrela) == 0)
1602 if (rela == lookrela || last_rel == NULL)
1604 if ((rela == lookrela || last_rel_alloc == NULL)
1605 && lookup->bfd_section != NULL
1606 && (lookup->bfd_section->flags & SEC_ALLOC) != 0)
1607 last_rel_alloc = lookup;
1611 if (lookup->bfd_section != NULL
1612 && (lookup->bfd_section->flags & SEC_ALLOC) != 0)
1614 last_alloc = lookup;
1615 if ((lookup->bfd_section->flags & SEC_READONLY) != 0)
1616 last_ro_alloc = lookup;
1621 return last_rel_alloc;
1627 return last_ro_alloc;
1635 /* Place an orphan section. We use this to put random SHF_ALLOC
1636 sections in the right segment. */
1638 static lang_output_section_statement_type *
1639 gld${EMULATION_NAME}_place_orphan (asection *s,
1640 const char *secname,
1643 static struct orphan_save hold[] =
1646 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
1649 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1652 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
1658 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1661 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1664 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_SMALL_DATA,
1670 enum orphan_save_index
1681 static int orphan_init_done = 0;
1682 struct orphan_save *place;
1683 lang_output_section_statement_type *after;
1684 lang_output_section_statement_type *os;
1686 int iself = s->owner->xvec->flavour == bfd_target_elf_flavour;
1687 unsigned int sh_type = iself ? elf_section_type (s) : SHT_NULL;
1689 if (! link_info.relocatable
1690 && link_info.combreloc
1691 && (s->flags & SEC_ALLOC))
1697 secname = ".rela.dyn";
1701 secname = ".rel.dyn";
1707 else if (CONST_STRNEQ (secname, ".rel"))
1709 secname = secname[4] == 'a' ? ".rela.dyn" : ".rel.dyn";
1714 /* Look through the script to see where to place this section. */
1716 && (os = lang_output_section_find (secname)) != NULL
1717 && os->bfd_section != NULL
1718 && (os->bfd_section->flags == 0
1719 || (_bfd_elf_match_sections_by_type (link_info.output_bfd,
1720 os->bfd_section, s->owner, s)
1721 && ((s->flags ^ os->bfd_section->flags)
1722 & (SEC_LOAD | SEC_ALLOC)) == 0)))
1724 /* We already have an output section statement with this
1725 name, and its bfd section has compatible flags.
1726 If the section already exists but does not have any flags
1727 set, then it has been created by the linker, probably as a
1728 result of a --section-start command line switch. */
1729 lang_add_section (&os->children, s, os);
1733 if (!orphan_init_done)
1735 lang_output_section_statement_type *lookup;
1736 struct orphan_save *ho;
1738 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
1739 if (ho->name != NULL)
1741 ho->os = lang_output_section_find (ho->name);
1742 if (ho->os != NULL && ho->os->flags == 0)
1743 ho->os->flags = ho->flags;
1745 lookup = hold[orphan_bss].os;
1747 lookup = &lang_output_section_statement.head->output_section_statement;
1748 for (; lookup != NULL; lookup = lookup->next)
1749 if ((lookup->bfd_section != NULL
1750 && (lookup->bfd_section->flags & SEC_DEBUGGING) != 0)
1751 || strcmp (lookup->name, ".comment") == 0)
1753 hold[orphan_nonalloc].os = lookup ? lookup->prev : NULL;
1754 hold[orphan_nonalloc].name = ".comment";
1755 orphan_init_done = 1;
1758 /* If this is a final link, then always put .gnu.warning.SYMBOL
1759 sections into the .text section to get them out of the way. */
1760 if (link_info.executable
1761 && ! link_info.relocatable
1762 && CONST_STRNEQ (s->name, ".gnu.warning.")
1763 && hold[orphan_text].os != NULL)
1765 os = hold[orphan_text].os;
1766 lang_add_section (&os->children, s, os);
1770 /* Decide which segment the section should go in based on the
1771 section name and section flags. We put loadable .note sections
1772 right after the .interp section, so that the PT_NOTE segment is
1773 stored right after the program headers where the OS can read it
1774 in the first page. */
1777 if ((s->flags & (SEC_ALLOC | SEC_DEBUGGING)) == 0)
1778 place = &hold[orphan_nonalloc];
1779 else if ((s->flags & SEC_ALLOC) == 0)
1781 else if ((s->flags & SEC_LOAD) != 0
1782 && ((iself && sh_type == SHT_NOTE)
1783 || (!iself && CONST_STRNEQ (secname, ".note"))))
1784 place = &hold[orphan_interp];
1785 else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
1786 place = &hold[orphan_bss];
1787 else if ((s->flags & SEC_SMALL_DATA) != 0)
1788 place = &hold[orphan_sdata];
1789 else if ((s->flags & SEC_READONLY) == 0)
1790 place = &hold[orphan_data];
1791 else if (((iself && (sh_type == SHT_RELA || sh_type == SHT_REL))
1792 || (!iself && CONST_STRNEQ (secname, ".rel")))
1793 && (s->flags & SEC_LOAD) != 0)
1794 place = &hold[orphan_rel];
1795 else if ((s->flags & SEC_CODE) == 0)
1796 place = &hold[orphan_rodata];
1798 place = &hold[orphan_text];
1803 if (place->os == NULL)
1805 if (place->name != NULL)
1806 place->os = lang_output_section_find (place->name);
1808 place->os = output_rel_find (s, isdyn);
1812 after = lang_output_section_find_by_flags
1813 (s, &place->os, _bfd_elf_match_sections_by_type);
1815 /* *ABS* is always the first output section statement. */
1816 after = &lang_output_section_statement.head->output_section_statement;
1819 return lang_insert_orphan (s, secname, constraint, after, place, NULL, NULL);
1824 if test x"$LDEMUL_FINISH" != xgld"$EMULATION_NAME"_finish; then
1828 gld${EMULATION_NAME}_finish (void)
1830 bfd_boolean need_layout = bfd_elf_discard_info (link_info.output_bfd,
1833 gld${EMULATION_NAME}_map_segments (need_layout);
1839 if test x"$LDEMUL_GET_SCRIPT" != xgld"$EMULATION_NAME"_get_script; then
1843 gld${EMULATION_NAME}_get_script (int *isfile)
1846 if test -n "$COMPILE_IN"
1848 # Scripts compiled in.
1850 # sed commands to quote an ld script as a C string.
1851 sc="-f stringify.sed"
1857 if (link_info.relocatable && config.build_constructors)
1860 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1861 echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
1862 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
1863 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
1864 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
1865 if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then : ; else
1866 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
1867 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
1869 if test -n "$GENERATE_PIE_SCRIPT" ; then
1870 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1871 echo ' ; else if (link_info.pie && link_info.combreloc' >> e${EMULATION_NAME}.c
1872 echo ' && link_info.relro' >> e${EMULATION_NAME}.c
1873 echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
1874 sed $sc ldscripts/${EMULATION_NAME}.xdw >> e${EMULATION_NAME}.c
1875 echo ' ; else if (link_info.pie && link_info.combreloc) return' >> e${EMULATION_NAME}.c
1876 sed $sc ldscripts/${EMULATION_NAME}.xdc >> e${EMULATION_NAME}.c
1878 echo ' ; else if (link_info.pie) return' >> e${EMULATION_NAME}.c
1879 sed $sc ldscripts/${EMULATION_NAME}.xd >> e${EMULATION_NAME}.c
1881 if test -n "$GENERATE_SHLIB_SCRIPT" ; then
1882 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1883 echo ' ; else if (link_info.shared && link_info.combreloc' >> e${EMULATION_NAME}.c
1884 echo ' && link_info.relro' >> e${EMULATION_NAME}.c
1885 echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
1886 sed $sc ldscripts/${EMULATION_NAME}.xsw >> e${EMULATION_NAME}.c
1887 echo ' ; else if (link_info.shared && link_info.combreloc) return' >> e${EMULATION_NAME}.c
1888 sed $sc ldscripts/${EMULATION_NAME}.xsc >> e${EMULATION_NAME}.c
1890 echo ' ; else if (link_info.shared) return' >> e${EMULATION_NAME}.c
1891 sed $sc ldscripts/${EMULATION_NAME}.xs >> e${EMULATION_NAME}.c
1893 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1894 echo ' ; else if (link_info.combreloc && link_info.relro' >> e${EMULATION_NAME}.c
1895 echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
1896 sed $sc ldscripts/${EMULATION_NAME}.xw >> e${EMULATION_NAME}.c
1897 echo ' ; else if (link_info.combreloc) return' >> e${EMULATION_NAME}.c
1898 sed $sc ldscripts/${EMULATION_NAME}.xc >> e${EMULATION_NAME}.c
1900 echo ' ; else return' >> e${EMULATION_NAME}.c
1901 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
1902 echo '; }' >> e${EMULATION_NAME}.c
1905 # Scripts read from the filesystem.
1911 if (link_info.relocatable && config.build_constructors)
1912 return "ldscripts/${EMULATION_NAME}.xu";
1913 else if (link_info.relocatable)
1914 return "ldscripts/${EMULATION_NAME}.xr";
1915 else if (!config.text_read_only)
1916 return "ldscripts/${EMULATION_NAME}.xbn";
1918 if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then :
1921 else if (!config.magic_demand_paged)
1922 return "ldscripts/${EMULATION_NAME}.xn";
1925 if test -n "$GENERATE_PIE_SCRIPT" ; then
1926 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1928 else if (link_info.pie && link_info.combreloc
1929 && link_info.relro && (link_info.flags & DF_BIND_NOW))
1930 return "ldscripts/${EMULATION_NAME}.xdw";
1931 else if (link_info.pie && link_info.combreloc)
1932 return "ldscripts/${EMULATION_NAME}.xdc";
1936 else if (link_info.pie)
1937 return "ldscripts/${EMULATION_NAME}.xd";
1940 if test -n "$GENERATE_SHLIB_SCRIPT" ; then
1941 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1943 else if (link_info.shared && link_info.combreloc
1944 && link_info.relro && (link_info.flags & DF_BIND_NOW))
1945 return "ldscripts/${EMULATION_NAME}.xsw";
1946 else if (link_info.shared && link_info.combreloc)
1947 return "ldscripts/${EMULATION_NAME}.xsc";
1951 else if (link_info.shared)
1952 return "ldscripts/${EMULATION_NAME}.xs";
1955 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1957 else if (link_info.combreloc && link_info.relro
1958 && (link_info.flags & DF_BIND_NOW))
1959 return "ldscripts/${EMULATION_NAME}.xw";
1960 else if (link_info.combreloc)
1961 return "ldscripts/${EMULATION_NAME}.xc";
1966 return "ldscripts/${EMULATION_NAME}.x";
1973 if test -n "$PARSE_AND_LIST_ARGS_CASES" -o x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1975 if test -n "$PARSE_AND_LIST_PROLOGUE" ; then
1977 $PARSE_AND_LIST_PROLOGUE
1983 #define OPTION_DISABLE_NEW_DTAGS (400)
1984 #define OPTION_ENABLE_NEW_DTAGS (OPTION_DISABLE_NEW_DTAGS + 1)
1985 #define OPTION_GROUP (OPTION_ENABLE_NEW_DTAGS + 1)
1986 #define OPTION_EH_FRAME_HDR (OPTION_GROUP + 1)
1987 #define OPTION_EXCLUDE_LIBS (OPTION_EH_FRAME_HDR + 1)
1988 #define OPTION_HASH_STYLE (OPTION_EXCLUDE_LIBS + 1)
1989 #define OPTION_BUILD_ID (OPTION_HASH_STYLE + 1)
1992 gld${EMULATION_NAME}_add_options
1993 (int ns, char **shortopts, int nl, struct option **longopts,
1994 int nrl ATTRIBUTE_UNUSED, struct option **really_longopts ATTRIBUTE_UNUSED)
1996 static const char xtra_short[] = "${PARSE_AND_LIST_SHORTOPTS}z:";
1997 static const struct option xtra_long[] = {
1998 {"build-id", optional_argument, NULL, OPTION_BUILD_ID},
2001 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2003 {"disable-new-dtags", no_argument, NULL, OPTION_DISABLE_NEW_DTAGS},
2004 {"enable-new-dtags", no_argument, NULL, OPTION_ENABLE_NEW_DTAGS},
2005 {"eh-frame-hdr", no_argument, NULL, OPTION_EH_FRAME_HDR},
2006 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
2007 {"hash-style", required_argument, NULL, OPTION_HASH_STYLE},
2008 {"Bgroup", no_argument, NULL, OPTION_GROUP},
2012 if test -n "$PARSE_AND_LIST_LONGOPTS" ; then
2014 $PARSE_AND_LIST_LONGOPTS
2019 {NULL, no_argument, NULL, 0}
2022 *shortopts = (char *) xrealloc (*shortopts, ns + sizeof (xtra_short));
2023 memcpy (*shortopts + ns, &xtra_short, sizeof (xtra_short));
2024 *longopts = (struct option *)
2025 xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
2026 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
2029 #define DEFAULT_BUILD_ID_STYLE "sha1"
2032 gld${EMULATION_NAME}_handle_option (int optc)
2039 case OPTION_BUILD_ID:
2040 if (link_info.emit_note_gnu_build_id != NULL)
2042 free (link_info.emit_note_gnu_build_id);
2043 link_info.emit_note_gnu_build_id = NULL;
2046 optarg = DEFAULT_BUILD_ID_STYLE;
2047 if (strcmp (optarg, "none"))
2048 link_info.emit_note_gnu_build_id = xstrdup (optarg);
2053 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2055 case OPTION_DISABLE_NEW_DTAGS:
2056 link_info.new_dtags = FALSE;
2059 case OPTION_ENABLE_NEW_DTAGS:
2060 link_info.new_dtags = TRUE;
2063 case OPTION_EH_FRAME_HDR:
2064 link_info.eh_frame_hdr = TRUE;
2068 link_info.flags_1 |= (bfd_vma) DF_1_GROUP;
2069 /* Groups must be self-contained. */
2070 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
2071 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
2074 case OPTION_EXCLUDE_LIBS:
2075 add_excluded_libs (optarg);
2078 case OPTION_HASH_STYLE:
2079 link_info.emit_hash = FALSE;
2080 link_info.emit_gnu_hash = FALSE;
2081 if (strcmp (optarg, "sysv") == 0)
2082 link_info.emit_hash = TRUE;
2083 else if (strcmp (optarg, "gnu") == 0)
2084 link_info.emit_gnu_hash = TRUE;
2085 else if (strcmp (optarg, "both") == 0)
2087 link_info.emit_hash = TRUE;
2088 link_info.emit_gnu_hash = TRUE;
2091 einfo (_("%P%F: invalid hash style \`%s'\n"), optarg);
2095 if (strcmp (optarg, "initfirst") == 0)
2096 link_info.flags_1 |= (bfd_vma) DF_1_INITFIRST;
2097 else if (strcmp (optarg, "interpose") == 0)
2098 link_info.flags_1 |= (bfd_vma) DF_1_INTERPOSE;
2099 else if (strcmp (optarg, "loadfltr") == 0)
2100 link_info.flags_1 |= (bfd_vma) DF_1_LOADFLTR;
2101 else if (strcmp (optarg, "nodefaultlib") == 0)
2102 link_info.flags_1 |= (bfd_vma) DF_1_NODEFLIB;
2103 else if (strcmp (optarg, "nodelete") == 0)
2104 link_info.flags_1 |= (bfd_vma) DF_1_NODELETE;
2105 else if (strcmp (optarg, "nodlopen") == 0)
2106 link_info.flags_1 |= (bfd_vma) DF_1_NOOPEN;
2107 else if (strcmp (optarg, "nodump") == 0)
2108 link_info.flags_1 |= (bfd_vma) DF_1_NODUMP;
2109 else if (strcmp (optarg, "now") == 0)
2111 link_info.flags |= (bfd_vma) DF_BIND_NOW;
2112 link_info.flags_1 |= (bfd_vma) DF_1_NOW;
2114 else if (strcmp (optarg, "lazy") == 0)
2116 link_info.flags &= ~(bfd_vma) DF_BIND_NOW;
2117 link_info.flags_1 &= ~(bfd_vma) DF_1_NOW;
2119 else if (strcmp (optarg, "origin") == 0)
2121 link_info.flags |= (bfd_vma) DF_ORIGIN;
2122 link_info.flags_1 |= (bfd_vma) DF_1_ORIGIN;
2124 else if (strcmp (optarg, "defs") == 0)
2125 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
2126 else if (strcmp (optarg, "muldefs") == 0)
2127 link_info.allow_multiple_definition = TRUE;
2128 else if (strcmp (optarg, "combreloc") == 0)
2129 link_info.combreloc = TRUE;
2130 else if (strcmp (optarg, "nocombreloc") == 0)
2131 link_info.combreloc = FALSE;
2132 else if (strcmp (optarg, "nocopyreloc") == 0)
2133 link_info.nocopyreloc = TRUE;
2134 else if (strcmp (optarg, "execstack") == 0)
2136 link_info.execstack = TRUE;
2137 link_info.noexecstack = FALSE;
2139 else if (strcmp (optarg, "noexecstack") == 0)
2141 link_info.noexecstack = TRUE;
2142 link_info.execstack = FALSE;
2146 if test -n "$COMMONPAGESIZE"; then
2148 else if (strcmp (optarg, "relro") == 0)
2149 link_info.relro = TRUE;
2150 else if (strcmp (optarg, "norelro") == 0)
2151 link_info.relro = FALSE;
2156 else if (CONST_STRNEQ (optarg, "max-page-size="))
2160 config.maxpagesize = strtoul (optarg + 14, &end, 0);
2161 if (*end || (config.maxpagesize & (config.maxpagesize - 1)) != 0)
2162 einfo (_("%P%F: invalid maxium page size \`%s'\n"),
2164 ASSERT (default_target != NULL);
2165 bfd_emul_set_maxpagesize (default_target, config.maxpagesize);
2167 else if (CONST_STRNEQ (optarg, "common-page-size="))
2170 config.commonpagesize = strtoul (optarg + 17, &end, 0);
2172 || (config.commonpagesize & (config.commonpagesize - 1)) != 0)
2173 einfo (_("%P%F: invalid common page size \`%s'\n"),
2175 ASSERT (default_target != NULL);
2176 bfd_emul_set_commonpagesize (default_target,
2177 config.commonpagesize);
2179 /* What about the other Solaris -z options? FIXME. */
2184 if test -n "$PARSE_AND_LIST_ARGS_CASES" ; then
2186 $PARSE_AND_LIST_ARGS_CASES
2198 if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
2202 gld${EMULATION_NAME}_list_options (FILE * file)
2205 --build-id[=STYLE] Generate build ID note\n"));
2208 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2211 -Bgroup Selects group name lookup rules for DSO\n"));
2213 --disable-new-dtags Disable new dynamic tags\n"));
2215 --enable-new-dtags Enable new dynamic tags\n"));
2217 --eh-frame-hdr Create .eh_frame_hdr section\n"));
2219 --hash-style=STYLE Set hash style to sysv, gnu or both\n"));
2221 -z combreloc Merge dynamic relocs into one section and sort\n"));
2223 -z defs Report unresolved symbols in object files.\n"));
2225 -z execstack Mark executable as requiring executable stack\n"));
2227 -z initfirst Mark DSO to be initialized first at runtime\n"));
2229 -z interpose Mark object to interpose all DSOs but executable\n"));
2231 -z lazy Mark object lazy runtime binding (default)\n"));
2233 -z loadfltr Mark object requiring immediate process\n"));
2235 -z muldefs Allow multiple definitions\n"));
2237 -z nocombreloc Don't merge dynamic relocs into one section\n"));
2239 -z nocopyreloc Don't create copy relocs\n"));
2241 -z nodefaultlib Mark object not to use default search paths\n"));
2243 -z nodelete Mark DSO non-deletable at runtime\n"));
2245 -z nodlopen Mark DSO not available to dlopen\n"));
2247 -z nodump Mark DSO not available to dldump\n"));
2249 -z noexecstack Mark executable as not requiring executable stack\n"));
2252 if test -n "$COMMONPAGESIZE"; then
2255 -z norelro Don't create RELRO program header\n"));
2261 -z now Mark object non-lazy runtime binding\n"));
2263 -z origin Mark object requiring immediate \$ORIGIN\n\
2264 processing at runtime\n"));
2267 if test -n "$COMMONPAGESIZE"; then
2270 -z relro Create RELRO program header\n"));
2276 -z max-page-size=SIZE Set maximum page size to SIZE\n"));
2278 -z common-page-size=SIZE Set common page size to SIZE\n"));
2280 -z KEYWORD Ignored for Solaris compatibility\n"));
2284 if test -n "$PARSE_AND_LIST_OPTIONS" ; then
2286 $PARSE_AND_LIST_OPTIONS
2294 if test -n "$PARSE_AND_LIST_EPILOGUE" ; then
2296 $PARSE_AND_LIST_EPILOGUE
2302 #define gld${EMULATION_NAME}_add_options NULL
2303 #define gld${EMULATION_NAME}_handle_option NULL
2305 if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
2307 #define gld${EMULATION_NAME}_list_options NULL
2314 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
2316 ${LDEMUL_BEFORE_PARSE-gld${EMULATION_NAME}_before_parse},
2317 ${LDEMUL_SYSLIB-syslib_default},
2318 ${LDEMUL_HLL-hll_default},
2319 ${LDEMUL_AFTER_PARSE-after_parse_default},
2320 ${LDEMUL_AFTER_OPEN-gld${EMULATION_NAME}_after_open},
2321 ${LDEMUL_AFTER_ALLOCATION-after_allocation_default},
2322 ${LDEMUL_SET_OUTPUT_ARCH-set_output_arch_default},
2323 ${LDEMUL_CHOOSE_TARGET-ldemul_default_target},
2324 ${LDEMUL_BEFORE_ALLOCATION-gld${EMULATION_NAME}_before_allocation},
2325 ${LDEMUL_GET_SCRIPT-gld${EMULATION_NAME}_get_script},
2326 "${EMULATION_NAME}",
2328 ${LDEMUL_FINISH-gld${EMULATION_NAME}_finish},
2329 ${LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS-NULL},
2330 ${LDEMUL_OPEN_DYNAMIC_ARCHIVE-gld${EMULATION_NAME}_open_dynamic_archive},
2331 ${LDEMUL_PLACE_ORPHAN-gld${EMULATION_NAME}_place_orphan},
2332 ${LDEMUL_SET_SYMBOLS-NULL},
2333 ${LDEMUL_PARSE_ARGS-NULL},
2334 gld${EMULATION_NAME}_add_options,
2335 gld${EMULATION_NAME}_handle_option,
2336 ${LDEMUL_UNRECOGNIZED_FILE-NULL},
2337 ${LDEMUL_LIST_OPTIONS-gld${EMULATION_NAME}_list_options},
2338 ${LDEMUL_RECOGNIZED_FILE-gld${EMULATION_NAME}_load_symbols},
2339 ${LDEMUL_FIND_POTENTIAL_LIBRARIES-NULL},
2340 ${LDEMUL_NEW_VERS_PATTERN-NULL}