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 ${EMULATION_NAME}
15 Copyright 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
16 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009
17 Free Software Foundation, Inc.
18 Written by Steve Chamberlain <sac@cygnus.com>
19 ELF support by Ian Lance Taylor <ian@cygnus.com>
21 This file is part of the GNU Binutils.
23 This program is free software; you can redistribute it and/or modify
24 it under the terms of the GNU General Public License as published by
25 the Free Software Foundation; either version 3 of the License, or
26 (at your option) any later version.
28 This program is distributed in the hope that it will be useful,
29 but WITHOUT ANY WARRANTY; without even the implied warranty of
30 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
31 GNU General Public License for more details.
33 You should have received a copy of the GNU General Public License
34 along with this program; if not, write to the Free Software
35 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
36 MA 02110-1301, USA. */
38 #define TARGET_IS_${EMULATION_NAME}
42 #include "libiberty.h"
43 #include "safe-ctype.h"
59 #include "elf/common.h"
61 #include "filenames.h"
63 /* Declare functions used by various EXTRA_EM_FILEs. */
64 static void gld${EMULATION_NAME}_before_parse (void);
65 static void gld${EMULATION_NAME}_after_open (void);
66 static void gld${EMULATION_NAME}_before_allocation (void);
67 static void gld${EMULATION_NAME}_after_allocation (void);
68 static lang_output_section_statement_type *gld${EMULATION_NAME}_place_orphan
69 (asection *, const char *, int);
72 if [ "x${USE_LIBPATH}" = xyes ] ; then
74 *-*-linux-* | *-*-k*bsd*-*)
84 # Import any needed special functions and/or overrides.
86 source_em ${srcdir}/emultempl/elf-generic.em
87 if test -n "$EXTRA_EM_FILE" ; then
88 source_em ${srcdir}/emultempl/${EXTRA_EM_FILE}.em
91 # Functions in this file can be overridden by setting the LDEMUL_* shell
92 # variables. If the name of the overriding function is the same as is
93 # defined in this file, then don't output this file's version.
94 # If a different overriding name is given then output the standard function
95 # as presumably it is called from the overriding function.
97 if test x"$LDEMUL_BEFORE_PARSE" != xgld"$EMULATION_NAME"_before_parse; then
101 gld${EMULATION_NAME}_before_parse (void)
103 ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
104 config.dynamic_link = ${DYNAMIC_LINK-TRUE};
105 config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo TRUE ; else echo FALSE ; fi`;
111 if test x"$LDEMUL_RECOGNIZED_FILE" != xgld"${EMULATION_NAME}"_load_symbols; then
113 /* Handle the generation of DT_NEEDED tags. */
116 gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *entry)
120 /* Tell the ELF linker that we don't want the output file to have a
121 DT_NEEDED entry for this file, unless it is used to resolve
122 references in a regular object. */
123 if (entry->add_DT_NEEDED_for_regular)
124 link_class = DYN_AS_NEEDED;
126 /* Tell the ELF linker that we don't want the output file to have a
127 DT_NEEDED entry for any dynamic library in DT_NEEDED tags from
129 if (!entry->add_DT_NEEDED_for_dynamic)
130 link_class |= DYN_NO_ADD_NEEDED;
132 if (entry->just_syms_flag
133 && (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) != 0)
134 einfo (_("%P%F: --just-symbols may not be used on DSO: %B\n"),
138 || (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) == 0)
141 bfd_elf_set_dyn_lib_class (entry->the_bfd,
142 (enum dynamic_lib_link_class) link_class);
144 /* Continue on with normal load_symbols processing. */
152 /* These variables are required to pass information back and forth
153 between after_open and check_needed and stat_needed and vercheck. */
155 static struct bfd_link_needed_list *global_needed;
156 static struct stat global_stat;
157 static lang_input_statement_type *global_found;
158 static struct bfd_link_needed_list *global_vercheck_needed;
159 static bfd_boolean global_vercheck_failed;
161 /* These variables are used to implement target options */
163 static char *audit; /* colon (typically) separated list of libs */
164 static char *depaudit; /* colon (typically) separated list of libs */
166 /* On Linux, it's possible to have different versions of the same
167 shared library linked against different versions of libc. The
168 dynamic linker somehow tags which libc version to use in
169 /etc/ld.so.cache, and, based on the libc that it sees in the
170 executable, chooses which version of the shared library to use.
172 We try to do a similar check here by checking whether this shared
173 library needs any other shared libraries which may conflict with
174 libraries we have already included in the link. If it does, we
175 skip it, and try to find another shared library farther on down the
178 This is called via lang_for_each_input_file.
179 GLOBAL_VERCHECK_NEEDED is the list of objects needed by the object
180 which we are checking. This sets GLOBAL_VERCHECK_FAILED if we find
181 a conflicting version. */
184 gld${EMULATION_NAME}_vercheck (lang_input_statement_type *s)
187 struct bfd_link_needed_list *l;
189 if (global_vercheck_failed)
191 if (s->the_bfd == NULL
192 || (bfd_get_file_flags (s->the_bfd) & DYNAMIC) == 0)
195 soname = bfd_elf_get_dt_soname (s->the_bfd);
197 soname = lbasename (bfd_get_filename (s->the_bfd));
199 for (l = global_vercheck_needed; l != NULL; l = l->next)
203 if (strcmp (soname, l->name) == 0)
205 /* Probably can't happen, but it's an easy check. */
209 if (strchr (l->name, '/') != NULL)
212 suffix = strstr (l->name, ".so.");
216 suffix += sizeof ".so." - 1;
218 if (strncmp (soname, l->name, suffix - l->name) == 0)
220 /* Here we know that S is a dynamic object FOO.SO.VER1, and
221 the object we are considering needs a dynamic object
222 FOO.SO.VER2, and VER1 and VER2 are different. This
223 appears to be a version mismatch, so we tell the caller
224 to try a different version of this library. */
225 global_vercheck_failed = TRUE;
232 /* See if an input file matches a DT_NEEDED entry by running stat on
236 gld${EMULATION_NAME}_stat_needed (lang_input_statement_type *s)
242 if (global_found != NULL)
244 if (s->the_bfd == NULL)
247 /* If this input file was an as-needed entry, and wasn't found to be
248 needed at the stage it was linked, then don't say we have loaded it. */
249 if ((bfd_elf_get_dyn_lib_class (s->the_bfd) & DYN_AS_NEEDED) != 0)
252 if (bfd_stat (s->the_bfd, &st) != 0)
254 einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd);
258 /* Some operating systems, e.g. Windows, do not provide a meaningful
259 st_ino; they always set it to zero. (Windows does provide a
260 meaningful st_dev.) Do not indicate a duplicate library in that
261 case. While there is no guarantee that a system that provides
262 meaningful inode numbers will never set st_ino to zero, this is
263 merely an optimization, so we do not need to worry about false
265 if (st.st_dev == global_stat.st_dev
266 && st.st_ino == global_stat.st_ino
273 /* We issue a warning if it looks like we are including two
274 different versions of the same shared library. For example,
275 there may be a problem if -lc picks up libc.so.6 but some other
276 shared library has a DT_NEEDED entry of libc.so.5. This is a
277 heuristic test, and it will only work if the name looks like
278 NAME.so.VERSION. FIXME: Depending on file names is error-prone.
279 If we really want to issue warnings about mixing version numbers
280 of shared libraries, we need to find a better way. */
282 if (strchr (global_needed->name, '/') != NULL)
284 suffix = strstr (global_needed->name, ".so.");
287 suffix += sizeof ".so." - 1;
289 soname = bfd_elf_get_dt_soname (s->the_bfd);
291 soname = lbasename (s->filename);
293 if (strncmp (soname, global_needed->name, suffix - global_needed->name) == 0)
294 einfo ("%P: warning: %s, needed by %B, may conflict with %s\n",
295 global_needed->name, global_needed->by, soname);
304 /* This function is called for each possible name for a dynamic object
305 named by a DT_NEEDED entry. The FORCE parameter indicates whether
306 to skip the check for a conflicting version. */
309 gld${EMULATION_NAME}_try_needed (struct dt_needed *needed,
313 const char *name = needed->name;
317 abfd = bfd_openr (name, bfd_get_target (link_info.output_bfd));
321 /* Linker needs to decompress sections. */
322 abfd->flags |= BFD_DECOMPRESS;
324 if (! bfd_check_format (abfd, bfd_object))
329 if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0)
335 /* For DT_NEEDED, they have to match. */
336 if (abfd->xvec != link_info.output_bfd->xvec)
342 /* Check whether this object would include any conflicting library
343 versions. If FORCE is set, then we skip this check; we use this
344 the second time around, if we couldn't find any compatible
345 instance of the shared library. */
349 struct bfd_link_needed_list *needs;
351 if (! bfd_elf_get_bfd_needed_list (abfd, &needs))
352 einfo ("%F%P:%B: bfd_elf_get_bfd_needed_list failed: %E\n", abfd);
356 global_vercheck_needed = needs;
357 global_vercheck_failed = FALSE;
358 lang_for_each_input_file (gld${EMULATION_NAME}_vercheck);
359 if (global_vercheck_failed)
362 /* Return FALSE to force the caller to move on to try
363 another file on the search path. */
367 /* But wait! It gets much worse. On Linux, if a shared
368 library does not use libc at all, we are supposed to skip
369 it the first time around in case we encounter a shared
370 library later on with the same name which does use the
371 version of libc that we want. This is much too horrible
372 to use on any system other than Linux. */
376 *-*-linux-* | *-*-k*bsd*-*)
379 struct bfd_link_needed_list *l;
381 for (l = needs; l != NULL; l = l->next)
382 if (CONST_STRNEQ (l->name, "libc.so"))
398 /* We've found a dynamic object matching the DT_NEEDED entry. */
400 /* We have already checked that there is no other input file of the
401 same name. We must now check again that we are not including the
402 same file twice. We need to do this because on many systems
403 libc.so is a symlink to, e.g., libc.so.1. The SONAME entry will
404 reference libc.so.1. If we have already included libc.so, we
405 don't want to include libc.so.1 if they are the same file, and we
406 can only check that using stat. */
408 if (bfd_stat (abfd, &global_stat) != 0)
409 einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd);
411 /* First strip off everything before the last '/'. */
412 soname = lbasename (abfd->filename);
414 if (trace_file_tries)
415 info_msg (_("found %s at %s\n"), soname, name);
418 lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed);
419 if (global_found != NULL)
421 /* Return TRUE to indicate that we found the file, even though
422 we aren't going to do anything with it. */
426 /* Specify the soname to use. */
427 bfd_elf_set_dt_needed_name (abfd, soname);
429 /* Tell the ELF linker that we don't want the output file to have a
430 DT_NEEDED entry for this file, unless it is used to resolve
431 references in a regular object. */
432 link_class = DYN_DT_NEEDED;
434 /* Tell the ELF linker that we don't want the output file to have a
435 DT_NEEDED entry for this file at all if the entry is from a file
436 with DYN_NO_ADD_NEEDED. */
437 if (needed->by != NULL
438 && (bfd_elf_get_dyn_lib_class (needed->by) & DYN_NO_ADD_NEEDED) != 0)
439 link_class |= DYN_NO_NEEDED | DYN_NO_ADD_NEEDED;
441 bfd_elf_set_dyn_lib_class (abfd, (enum dynamic_lib_link_class) link_class);
443 /* Add this file into the symbol table. */
444 if (! bfd_link_add_symbols (abfd, &link_info))
445 einfo ("%F%B: could not read symbols: %E\n", abfd);
451 /* Search for a needed file in a path. */
454 gld${EMULATION_NAME}_search_needed (const char *path,
455 struct dt_needed *n, int force)
458 const char *name = n->name;
460 struct dt_needed needed;
463 return gld${EMULATION_NAME}_try_needed (n, force);
465 if (path == NULL || *path == '\0')
469 needed.name = n->name;
474 char *filename, *sset;
476 s = strchr (path, config.rpath_separator);
478 s = path + strlen (path);
480 #if HAVE_DOS_BASED_FILE_SYSTEM
481 /* Assume a match on the second char is part of drive specifier. */
482 else if (config.rpath_separator == ':'
486 s = strchr (s + 1, config.rpath_separator);
488 s = path + strlen (path);
491 filename = (char *) xmalloc (s - path + len + 2);
496 memcpy (filename, path, s - path);
497 filename[s - path] = '/';
498 sset = filename + (s - path) + 1;
502 needed.name = filename;
503 if (gld${EMULATION_NAME}_try_needed (&needed, force))
517 if [ "x${USE_LIBPATH}" = xyes ] ; then
520 /* Add the sysroot to every entry in a path separated by
521 config.rpath_separator. */
524 gld${EMULATION_NAME}_add_sysroot (const char *path)
533 if (path[i++] == config.rpath_separator)
539 len = len + (colons + 1) * strlen (ld_sysroot);
540 ret = xmalloc (len + 1);
541 strcpy (ret, ld_sysroot);
542 p = ret + strlen (ret);
545 if (path[i] == config.rpath_separator)
548 strcpy (p, ld_sysroot);
560 *-*-freebsd* | *-*-dragonfly*)
562 /* Read the system search path the FreeBSD way rather than the Linux way. */
563 #ifdef HAVE_ELF_HINTS_H
564 #include <elf-hints.h>
566 #include "elf-hints-local.h"
570 gld${EMULATION_NAME}_check_ld_elf_hints (const char *name, int force)
572 static bfd_boolean initialized;
573 static char *ld_elf_hints;
574 struct dt_needed needed;
581 tmppath = concat (ld_sysroot, _PATH_ELF_HINTS, (const char *) NULL);
582 f = fopen (tmppath, FOPEN_RB);
586 struct elfhints_hdr hdr;
588 if (fread (&hdr, 1, sizeof (hdr), f) == sizeof (hdr)
589 && hdr.magic == ELFHINTS_MAGIC
592 if (fseek (f, hdr.strtab + hdr.dirlist, SEEK_SET) != -1)
596 b = xmalloc (hdr.dirlistlen + 1);
597 if (fread (b, 1, hdr.dirlistlen + 1, f) ==
599 ld_elf_hints = gld${EMULATION_NAME}_add_sysroot (b);
610 if (ld_elf_hints == NULL)
615 return gld${EMULATION_NAME}_search_needed (ld_elf_hints, & needed,
622 *-*-linux-* | *-*-k*bsd*-*)
624 /* For a native linker, check the file /etc/ld.so.conf for directories
625 in which we may find shared libraries. /etc/ld.so.conf is really
626 only meaningful on Linux. */
628 struct gld${EMULATION_NAME}_ld_so_conf
635 gld${EMULATION_NAME}_parse_ld_so_conf
636 (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename);
639 gld${EMULATION_NAME}_parse_ld_so_conf_include
640 (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename,
648 if (pattern[0] != '/')
650 char *p = strrchr (filename, '/');
651 size_t patlen = strlen (pattern) + 1;
653 newp = xmalloc (p - filename + 1 + patlen);
654 memcpy (newp, filename, p - filename + 1);
655 memcpy (newp + (p - filename + 1), pattern, patlen);
660 if (glob (pattern, 0, NULL, &gl) == 0)
664 for (i = 0; i < gl.gl_pathc; ++i)
665 gld${EMULATION_NAME}_parse_ld_so_conf (info, gl.gl_pathv[i]);
669 /* If we do not have glob, treat the pattern as a literal filename. */
670 gld${EMULATION_NAME}_parse_ld_so_conf (info, pattern);
678 gld${EMULATION_NAME}_parse_ld_so_conf
679 (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename)
681 FILE *f = fopen (filename, FOPEN_RT);
689 line = xmalloc (linelen);
694 /* Normally this would use getline(3), but we need to be portable. */
695 while ((q = fgets (p, linelen - (p - line), f)) != NULL
696 && strlen (q) == linelen - (p - line) - 1
697 && line[linelen - 2] != '\n')
699 line = xrealloc (line, 2 * linelen);
700 p = line + linelen - 1;
704 if (q == NULL && p == line)
707 p = strchr (line, '\n');
711 /* Because the file format does not know any form of quoting we
712 can search forward for the next '#' character and if found
713 make it terminating the line. */
714 p = strchr (line, '#');
718 /* Remove leading whitespace. NUL is no whitespace character. */
720 while (*p == ' ' || *p == '\f' || *p == '\r' || *p == '\t' || *p == '\v')
723 /* If the line is blank it is ignored. */
727 if (CONST_STRNEQ (p, "include") && (p[7] == ' ' || p[7] == '\t'))
733 while (*p == ' ' || *p == '\t')
741 while (*p != ' ' && *p != '\t' && *p)
747 gld${EMULATION_NAME}_parse_ld_so_conf_include (info, filename,
755 while (*p && *p != '=' && *p != ' ' && *p != '\t' && *p != '\f'
756 && *p != '\r' && *p != '\v')
759 while (p != dir && p[-1] == '/')
761 if (info->path == NULL)
763 info->alloc = p - dir + 1 + 256;
764 info->path = xmalloc (info->alloc);
769 if (info->len + 1 + (p - dir) >= info->alloc)
771 info->alloc += p - dir + 256;
772 info->path = xrealloc (info->path, info->alloc);
774 info->path[info->len++] = config.rpath_separator;
776 memcpy (info->path + info->len, dir, p - dir);
777 info->len += p - dir;
778 info->path[info->len] = '\0';
788 gld${EMULATION_NAME}_check_ld_so_conf (const char *name, int force)
790 static bfd_boolean initialized;
791 static char *ld_so_conf;
792 struct dt_needed needed;
797 struct gld${EMULATION_NAME}_ld_so_conf info;
800 info.len = info.alloc = 0;
801 tmppath = concat (ld_sysroot, "${prefix}/etc/ld.so.conf",
802 (const char *) NULL);
803 if (!gld${EMULATION_NAME}_parse_ld_so_conf (&info, tmppath))
806 tmppath = concat (ld_sysroot, "/etc/ld.so.conf",
807 (const char *) NULL);
808 gld${EMULATION_NAME}_parse_ld_so_conf (&info, tmppath);
814 char *d = gld${EMULATION_NAME}_add_sysroot (info.path);
821 if (ld_so_conf == NULL)
827 return gld${EMULATION_NAME}_search_needed (ld_so_conf, &needed, force);
837 /* See if an input file matches a DT_NEEDED entry by name. */
840 gld${EMULATION_NAME}_check_needed (lang_input_statement_type *s)
844 /* Stop looking if we've found a loaded lib. */
845 if (global_found != NULL
846 && (bfd_elf_get_dyn_lib_class (global_found->the_bfd)
847 & DYN_AS_NEEDED) == 0)
850 if (s->filename == NULL || s->the_bfd == NULL)
853 /* Don't look for a second non-loaded as-needed lib. */
854 if (global_found != NULL
855 && (bfd_elf_get_dyn_lib_class (s->the_bfd) & DYN_AS_NEEDED) != 0)
858 if (strcmp (s->filename, global_needed->name) == 0)
864 if (s->search_dirs_flag)
866 const char *f = strrchr (s->filename, '/');
868 && strcmp (f + 1, global_needed->name) == 0)
875 soname = bfd_elf_get_dt_soname (s->the_bfd);
877 && strcmp (soname, global_needed->name) == 0)
886 if test x"$LDEMUL_AFTER_OPEN" != xgld"$EMULATION_NAME"_after_open; then
890 gld${EMULATION_NAME}_id_note_section_size (bfd *abfd,
891 struct bfd_link_info *linfo)
893 const char *style = linfo->emit_note_gnu_build_id;
898 size = offsetof (Elf_External_Note, name[sizeof "GNU"]);
899 size = (size + 3) & -(bfd_size_type) 4;
901 if (!strcmp (style, "md5") || !strcmp (style, "uuid"))
903 else if (!strcmp (style, "sha1"))
905 else if (!strncmp (style, "0x", 2))
907 /* ID is in string form (hex). Convert to bits. */
908 const char *id = style + 2;
911 if (ISXDIGIT (id[0]) && ISXDIGIT (id[1]))
916 else if (*id == '-' || *id == ':')
923 } while (*id != '\0');
932 read_hex (const char xdigit)
934 if (ISDIGIT (xdigit))
936 if (ISUPPER (xdigit))
937 return xdigit - 'A' + 0xa;
938 if (ISLOWER (xdigit))
939 return xdigit - 'a' + 0xa;
951 gld${EMULATION_NAME}_write_build_id_section (bfd *abfd)
953 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
954 struct build_id_info *info = (struct build_id_info *)
955 elf_tdata (abfd)->after_write_object_contents_info;
957 Elf_Internal_Shdr *i_shdr;
958 unsigned char *contents, *id_bits;
960 Elf_External_Note *e_note;
963 if (bfd_is_abs_section (asec->output_section))
965 einfo (_("%P: warning: .note.gnu.build-id section discarded,"
966 " --build-id ignored.\n"));
969 i_shdr = &elf_section_data (asec->output_section)->this_hdr;
971 if (i_shdr->contents == NULL)
973 if (asec->contents == NULL)
974 asec->contents = (unsigned char *) xmalloc (asec->size);
975 contents = asec->contents;
978 contents = i_shdr->contents + asec->output_offset;
980 e_note = (Elf_External_Note *) contents;
981 size = offsetof (Elf_External_Note, name[sizeof "GNU"]);
982 size = (size + 3) & -(bfd_size_type) 4;
983 id_bits = contents + size;
984 size = asec->size - size;
986 bfd_h_put_32 (abfd, sizeof "GNU", &e_note->namesz);
987 bfd_h_put_32 (abfd, size, &e_note->descsz);
988 bfd_h_put_32 (abfd, NT_GNU_BUILD_ID, &e_note->type);
989 memcpy (e_note->name, "GNU", sizeof "GNU");
991 if (!strcmp (info->style, "md5"))
995 if (bed->s->checksum_contents (abfd,
996 (void (*) (const void *, size_t, void *))
999 md5_finish_ctx (&ctx, id_bits);
1003 else if (!strcmp (info->style, "sha1"))
1005 struct sha1_ctx ctx;
1006 sha1_init_ctx (&ctx);
1007 if (bed->s->checksum_contents (abfd,
1008 (void (*) (const void *, size_t, void *))
1009 &sha1_process_bytes,
1011 sha1_finish_ctx (&ctx, id_bits);
1015 else if (!strcmp (info->style, "uuid"))
1018 int fd = open ("/dev/urandom", O_RDONLY);
1021 n = read (fd, id_bits, size);
1026 else if (!strncmp (info->style, "0x", 2))
1028 /* ID is in string form (hex). Convert to bits. */
1029 const char *id = info->style + 2;
1033 if (ISXDIGIT (id[0]) && ISXDIGIT (id[1]))
1035 id_bits[n] = read_hex (*id++) << 4;
1036 id_bits[n++] |= read_hex (*id++);
1038 else if (*id == '-' || *id == ':')
1041 abort (); /* Should have been validated earlier. */
1042 } while (*id != '\0');
1045 abort (); /* Should have been validated earlier. */
1048 return (bfd_seek (abfd,
1049 i_shdr->sh_offset + asec->output_offset, SEEK_SET) == 0
1050 && bfd_bwrite (contents, size, abfd) == size);
1054 /* This is called after all the input files have been opened. */
1057 gld${EMULATION_NAME}_after_open (void)
1059 struct bfd_link_needed_list *needed, *l;
1060 struct elf_link_hash_table *htab;
1062 htab = elf_hash_table (&link_info);
1063 if (!is_elf_hash_table (htab))
1066 if (link_info.emit_note_gnu_build_id)
1072 /* Find an ELF input. */
1073 for (abfd = link_info.input_bfds;
1074 abfd != (bfd *) NULL; abfd = abfd->link_next)
1075 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
1080 /* PR 10555: If there are no input files do not
1081 try to create a .note.gnu-build-id section. */
1082 free (link_info.emit_note_gnu_build_id);
1083 link_info.emit_note_gnu_build_id = NULL;
1087 size = gld${EMULATION_NAME}_id_note_section_size (abfd, &link_info);
1090 einfo ("%P: warning: unrecognized --build-id style ignored.\n");
1091 free (link_info.emit_note_gnu_build_id);
1092 link_info.emit_note_gnu_build_id = NULL;
1096 s = bfd_make_section_with_flags (abfd, ".note.gnu.build-id",
1097 SEC_ALLOC | SEC_LOAD
1098 | SEC_IN_MEMORY | SEC_LINKER_CREATED
1099 | SEC_READONLY | SEC_DATA);
1100 if (s != NULL && bfd_set_section_alignment (abfd, s, 2))
1102 struct elf_obj_tdata *t = elf_tdata (link_info.output_bfd);
1103 struct build_id_info *b =
1104 (struct build_id_info *) xmalloc (sizeof *b);
1106 b->style = link_info.emit_note_gnu_build_id;
1108 elf_section_type (s) = SHT_NOTE;
1110 t->after_write_object_contents
1111 = &gld${EMULATION_NAME}_write_build_id_section;
1112 t->after_write_object_contents_info = b;
1116 einfo ("%P: warning: Cannot create .note.gnu.build-id section,"
1117 " --build-id ignored.\n");
1118 free (link_info.emit_note_gnu_build_id);
1119 link_info.emit_note_gnu_build_id = NULL;
1125 if (link_info.relocatable)
1128 if (link_info.eh_frame_hdr
1129 && !link_info.traditional_format)
1131 bfd *abfd, *elfbfd = NULL;
1132 bfd_boolean warn_eh_frame = FALSE;
1135 for (abfd = link_info.input_bfds; abfd; abfd = abfd->link_next)
1137 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
1141 s = bfd_get_section_by_name (abfd, ".eh_frame");
1145 && !bfd_is_abs_section (s->output_section));
1147 if (elfbfd && warn_eh_frame)
1152 const struct elf_backend_data *bed;
1154 bed = get_elf_backend_data (elfbfd);
1155 s = bfd_make_section_with_flags (elfbfd, ".eh_frame_hdr",
1156 bed->dynamic_sec_flags
1159 && bfd_set_section_alignment (elfbfd, s, 2))
1161 htab->eh_info.hdr_sec = s;
1162 warn_eh_frame = FALSE;
1166 einfo ("%P: warning: Cannot create .eh_frame_hdr section,"
1167 " --eh-frame-hdr ignored.\n");
1170 /* Get the list of files which appear in DT_NEEDED entries in
1171 dynamic objects included in the link (often there will be none).
1172 For each such file, we want to track down the corresponding
1173 library, and include the symbol table in the link. This is what
1174 the runtime dynamic linker will do. Tracking the files down here
1175 permits one dynamic object to include another without requiring
1176 special action by the person doing the link. Note that the
1177 needed list can actually grow while we are stepping through this
1179 if (!link_info.executable)
1181 needed = bfd_elf_get_needed_list (link_info.output_bfd, &link_info);
1182 for (l = needed; l != NULL; l = l->next)
1184 struct bfd_link_needed_list *ll;
1185 struct dt_needed n, nn;
1188 /* If the lib that needs this one was --as-needed and wasn't
1189 found to be needed, then this lib isn't needed either. */
1191 && (bfd_elf_get_dyn_lib_class (l->by) & DYN_AS_NEEDED) != 0)
1194 /* If we've already seen this file, skip it. */
1195 for (ll = needed; ll != l; ll = ll->next)
1197 || (bfd_elf_get_dyn_lib_class (ll->by) & DYN_AS_NEEDED) == 0)
1198 && strcmp (ll->name, l->name) == 0)
1203 /* See if this file was included in the link explicitly. */
1205 global_found = NULL;
1206 lang_for_each_input_file (gld${EMULATION_NAME}_check_needed);
1207 if (global_found != NULL
1208 && (bfd_elf_get_dyn_lib_class (global_found->the_bfd)
1209 & DYN_AS_NEEDED) == 0)
1215 if (trace_file_tries)
1216 info_msg (_("%s needed by %B\n"), l->name, l->by);
1218 /* As-needed libs specified on the command line (or linker script)
1219 take priority over libs found in search dirs. */
1220 if (global_found != NULL)
1222 nn.name = global_found->filename;
1223 if (gld${EMULATION_NAME}_try_needed (&nn, TRUE))
1227 /* We need to find this file and include the symbol table. We
1228 want to search for the file in the same way that the dynamic
1229 linker will search. That means that we want to use
1230 rpath_link, rpath, then the environment variable
1231 LD_LIBRARY_PATH (native only), then the DT_RPATH/DT_RUNPATH
1232 entries (native only), then the linker script LIB_SEARCH_DIRS.
1233 We do not search using the -L arguments.
1235 We search twice. The first time, we skip objects which may
1236 introduce version mismatches. The second time, we force
1237 their use. See gld${EMULATION_NAME}_vercheck comment. */
1238 for (force = 0; force < 2; force++)
1241 search_dirs_type *search;
1243 if [ "x${NATIVE}" = xyes ] ; then
1245 const char *lib_path;
1248 if [ "x${USE_LIBPATH}" = xyes ] ; then
1250 struct bfd_link_needed_list *rp;
1256 if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link,
1260 if [ "x${USE_LIBPATH}" = xyes ] ; then
1262 if (gld${EMULATION_NAME}_search_needed (command_line.rpath,
1267 if [ "x${NATIVE}" = xyes ] ; then
1269 if (command_line.rpath_link == NULL
1270 && command_line.rpath == NULL)
1272 lib_path = (const char *) getenv ("LD_RUN_PATH");
1273 if (gld${EMULATION_NAME}_search_needed (lib_path, &n,
1277 lib_path = (const char *) getenv ("LD_LIBRARY_PATH");
1278 if (gld${EMULATION_NAME}_search_needed (lib_path, &n, force))
1282 if [ "x${USE_LIBPATH}" = xyes ] ; then
1285 rp = bfd_elf_get_runpath_list (link_info.output_bfd, &link_info);
1286 for (; !found && rp != NULL; rp = rp->next)
1288 char *tmpname = gld${EMULATION_NAME}_add_sysroot (rp->name);
1289 found = (rp->by == l->by
1290 && gld${EMULATION_NAME}_search_needed (tmpname,
1300 if [ "x${USE_LIBPATH}" = xyes ] ; then
1302 *-*-freebsd* | *-*-dragonfly*)
1304 if (gld${EMULATION_NAME}_check_ld_elf_hints (l->name, force))
1310 *-*-linux-* | *-*-k*bsd*-*)
1313 if (gld${EMULATION_NAME}_check_ld_so_conf (l->name, force))
1321 len = strlen (l->name);
1322 for (search = search_head; search != NULL; search = search->next)
1326 if (search->cmdline)
1328 filename = (char *) xmalloc (strlen (search->name) + len + 2);
1329 sprintf (filename, "%s/%s", search->name, l->name);
1331 if (gld${EMULATION_NAME}_try_needed (&nn, force))
1344 einfo ("%P: warning: %s, needed by %B, not found (try using -rpath or -rpath-link)\n",
1354 /* Look through an expression for an assignment statement. */
1357 gld${EMULATION_NAME}_find_exp_assignment (etree_type *exp)
1359 bfd_boolean provide = FALSE;
1361 switch (exp->type.node_class)
1364 case etree_provided:
1368 /* We call record_link_assignment even if the symbol is defined.
1369 This is because if it is defined by a dynamic object, we
1370 actually want to use the value defined by the linker script,
1371 not the value from the dynamic object (because we are setting
1372 symbols like etext). If the symbol is defined by a regular
1373 object, then, as it happens, calling record_link_assignment
1375 if (strcmp (exp->assign.dst, ".") != 0)
1377 if (!bfd_elf_record_link_assignment (link_info.output_bfd,
1379 exp->assign.dst, provide,
1380 exp->assign.hidden))
1381 einfo ("%P%F: failed to record assignment to %s: %E\n",
1384 gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src);
1388 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs);
1389 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs);
1393 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond);
1394 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs);
1395 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs);
1399 gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child);
1408 /* This is called by the before_allocation routine via
1409 lang_for_each_statement. It locates any assignment statements, and
1410 tells the ELF backend about them, in case they are assignments to
1411 symbols which are referred to by dynamic objects. */
1414 gld${EMULATION_NAME}_find_statement_assignment (lang_statement_union_type *s)
1416 if (s->header.type == lang_assignment_statement_enum)
1417 gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp);
1422 if test x"$LDEMUL_BEFORE_ALLOCATION" != xgld"$EMULATION_NAME"_before_allocation; then
1423 if test x"${ELF_INTERPRETER_NAME+set}" = xset; then
1424 ELF_INTERPRETER_SET_DEFAULT="
1425 if (sinterp != NULL)
1427 sinterp->contents = (unsigned char *) ${ELF_INTERPRETER_NAME};
1428 sinterp->size = strlen ((char *) sinterp->contents) + 1;
1433 ELF_INTERPRETER_SET_DEFAULT=
1437 /* used by before_allocation and handle_option. */
1439 gld${EMULATION_NAME}_append_to_separated_string (char **to, char *op_arg)
1442 *to = xstrdup (op_arg);
1445 size_t to_len = strlen (*to);
1446 size_t op_arg_len = strlen (op_arg);
1450 /* First see whether OPTARG is already in the path. */
1453 if (strncmp (op_arg, cp, op_arg_len) == 0
1454 && (cp[op_arg_len] == 0
1455 || cp[op_arg_len] == config.rpath_separator))
1459 /* Not yet found. */
1460 cp = strchr (cp, config.rpath_separator);
1468 buf = xmalloc (to_len + op_arg_len + 2);
1469 sprintf (buf, "%s%c%s", *to,
1470 config.rpath_separator, op_arg);
1477 /* This is called after the sections have been attached to output
1478 sections, but before any sizes or addresses have been set. */
1481 gld${EMULATION_NAME}_before_allocation (void)
1487 if (link_info.hash->type == bfd_link_elf_hash_table)
1488 _bfd_elf_tls_setup (link_info.output_bfd, &link_info);
1490 /* If we are going to make any variable assignments, we need to let
1491 the ELF backend know about them in case the variables are
1492 referred to by dynamic objects. */
1493 lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment);
1495 /* Let the ELF backend work out the sizes of any sections required
1496 by dynamic linking. */
1497 rpath = command_line.rpath;
1499 rpath = (const char *) getenv ("LD_RUN_PATH");
1501 for (abfd = link_info.input_bfds; abfd; abfd = abfd->link_next)
1502 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
1504 const char *audit_libs = elf_dt_audit (abfd);
1506 /* If the input bfd contains an audit entry, we need to add it as
1507 a dep audit entry. */
1508 if (audit_libs && *audit_libs != '\0')
1510 char *cp = xstrdup (audit_libs);
1514 char *cp2 = strchr (cp, config.rpath_separator);
1522 if (cp != NULL && *cp != '\0')
1523 gld${EMULATION_NAME}_append_to_separated_string (&depaudit, cp);
1525 cp = more ? ++cp2 : NULL;
1531 if (! (bfd_elf_size_dynamic_sections
1532 (link_info.output_bfd, command_line.soname, rpath,
1533 command_line.filter_shlib, audit, depaudit,
1534 (const char * const *) command_line.auxiliary_filters,
1535 &link_info, &sinterp, lang_elf_version_info)))
1536 einfo ("%P%F: failed to set dynamic section sizes: %E\n");
1538 ${ELF_INTERPRETER_SET_DEFAULT}
1539 /* Let the user override the dynamic linker we are using. */
1540 if (command_line.interpreter != NULL
1543 sinterp->contents = (bfd_byte *) command_line.interpreter;
1544 sinterp->size = strlen (command_line.interpreter) + 1;
1547 /* Look for any sections named .gnu.warning. As a GNU extensions,
1548 we treat such sections as containing warning messages. We print
1549 out the warning message, and then zero out the section size so
1550 that it does not get copied into the output file. */
1553 LANG_FOR_EACH_INPUT_STATEMENT (is)
1560 if (is->just_syms_flag)
1563 s = bfd_get_section_by_name (is->the_bfd, ".gnu.warning");
1568 msg = (char *) xmalloc ((size_t) (sz + 1));
1569 if (! bfd_get_section_contents (is->the_bfd, s, msg,
1571 einfo ("%F%B: Can't read contents of section .gnu.warning: %E\n",
1574 ret = link_info.callbacks->warning (&link_info, msg,
1575 (const char *) NULL,
1576 is->the_bfd, (asection *) NULL,
1581 /* Clobber the section size, so that we don't waste space
1582 copying the warning into the output file. If we've already
1583 sized the output section, adjust its size. The adjustment
1584 is on rawsize because targets that size sections early will
1585 have called lang_reset_memory_regions after sizing. */
1586 if (s->output_section != NULL
1587 && s->output_section->rawsize >= s->size)
1588 s->output_section->rawsize -= s->size;
1592 /* Also set SEC_EXCLUDE, so that local symbols defined in the
1593 warning section don't get copied to the output. */
1594 s->flags |= SEC_EXCLUDE | SEC_KEEP;
1598 before_allocation_default ();
1600 if (!bfd_elf_size_dynsym_hash_dynstr (link_info.output_bfd, &link_info))
1601 einfo ("%P%F: failed to set dynamic section sizes: %E\n");
1607 if test x"$LDEMUL_OPEN_DYNAMIC_ARCHIVE" != xgld"$EMULATION_NAME"_open_dynamic_archive; then
1610 /* Try to open a dynamic archive. This is where we know that ELF
1611 dynamic libraries have an extension of .so (or .sl on oddball systems
1615 gld${EMULATION_NAME}_open_dynamic_archive
1616 (const char *arch, search_dirs_type *search, lang_input_statement_type *entry)
1618 const char *filename;
1621 if (! entry->is_archive)
1624 filename = entry->filename;
1626 /* This allocates a few bytes too many when EXTRA_SHLIB_EXTENSION
1627 is defined, but it does not seem worth the headache to optimize
1628 away those two bytes of space. */
1629 string = (char *) xmalloc (strlen (search->name)
1632 #ifdef EXTRA_SHLIB_EXTENSION
1633 + strlen (EXTRA_SHLIB_EXTENSION)
1635 + sizeof "/lib.so");
1637 sprintf (string, "%s/lib%s%s.so", search->name, filename, arch);
1639 #ifdef EXTRA_SHLIB_EXTENSION
1640 /* Try the .so extension first. If that fails build a new filename
1641 using EXTRA_SHLIB_EXTENSION. */
1642 if (! ldfile_try_open_bfd (string, entry))
1644 sprintf (string, "%s/lib%s%s%s", search->name,
1645 filename, arch, EXTRA_SHLIB_EXTENSION);
1648 if (! ldfile_try_open_bfd (string, entry))
1653 #ifdef EXTRA_SHLIB_EXTENSION
1657 entry->filename = string;
1659 /* We have found a dynamic object to include in the link. The ELF
1660 backend linker will create a DT_NEEDED entry in the .dynamic
1661 section naming this file. If this file includes a DT_SONAME
1662 entry, it will be used. Otherwise, the ELF linker will just use
1663 the name of the file. For an archive found by searching, like
1664 this one, the DT_NEEDED entry should consist of just the name of
1665 the file, without the path information used to find it. Note
1666 that we only need to do this if we have a dynamic object; an
1667 archive will never be referenced by a DT_NEEDED entry.
1669 FIXME: This approach--using bfd_elf_set_dt_needed_name--is not
1670 very pretty. I haven't been able to think of anything that is
1672 if (bfd_check_format (entry->the_bfd, bfd_object)
1673 && (entry->the_bfd->flags & DYNAMIC) != 0)
1675 ASSERT (entry->is_archive && entry->search_dirs_flag);
1677 /* Rather than duplicating the logic above. Just use the
1678 filename we recorded earlier. */
1680 filename = lbasename (entry->filename);
1681 bfd_elf_set_dt_needed_name (entry->the_bfd, filename);
1690 if test x"$LDEMUL_PLACE_ORPHAN" != xgld"$EMULATION_NAME"_place_orphan; then
1693 /* A variant of lang_output_section_find used by place_orphan. */
1695 static lang_output_section_statement_type *
1696 output_rel_find (asection *sec, int isdyn)
1698 lang_output_section_statement_type *lookup;
1699 lang_output_section_statement_type *last = NULL;
1700 lang_output_section_statement_type *last_alloc = NULL;
1701 lang_output_section_statement_type *last_ro_alloc = NULL;
1702 lang_output_section_statement_type *last_rel = NULL;
1703 lang_output_section_statement_type *last_rel_alloc = NULL;
1704 int rela = sec->name[4] == 'a';
1706 for (lookup = &lang_output_section_statement.head->output_section_statement;
1708 lookup = lookup->next)
1710 if (lookup->constraint >= 0
1711 && CONST_STRNEQ (lookup->name, ".rel"))
1713 int lookrela = lookup->name[4] == 'a';
1715 /* .rel.dyn must come before all other reloc sections, to suit
1720 /* Don't place after .rel.plt as doing so results in wrong
1722 if (strcmp (".plt", lookup->name + 4 + lookrela) == 0)
1725 if (rela == lookrela || last_rel == NULL)
1727 if ((rela == lookrela || last_rel_alloc == NULL)
1728 && lookup->bfd_section != NULL
1729 && (lookup->bfd_section->flags & SEC_ALLOC) != 0)
1730 last_rel_alloc = lookup;
1734 if (lookup->bfd_section != NULL
1735 && (lookup->bfd_section->flags & SEC_ALLOC) != 0)
1737 last_alloc = lookup;
1738 if ((lookup->bfd_section->flags & SEC_READONLY) != 0)
1739 last_ro_alloc = lookup;
1744 return last_rel_alloc;
1750 return last_ro_alloc;
1758 /* Place an orphan section. We use this to put random SHF_ALLOC
1759 sections in the right segment. */
1761 static lang_output_section_statement_type *
1762 gld${EMULATION_NAME}_place_orphan (asection *s,
1763 const char *secname,
1766 static struct orphan_save hold[] =
1769 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
1772 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1775 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
1781 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1784 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1787 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_SMALL_DATA,
1793 enum orphan_save_index
1804 static int orphan_init_done = 0;
1805 struct orphan_save *place;
1806 lang_output_section_statement_type *after;
1807 lang_output_section_statement_type *os;
1808 lang_output_section_statement_type *match_by_name = NULL;
1810 int iself = s->owner->xvec->flavour == bfd_target_elf_flavour;
1811 unsigned int sh_type = iself ? elf_section_type (s) : SHT_NULL;
1813 if (! link_info.relocatable
1814 && link_info.combreloc
1815 && (s->flags & SEC_ALLOC))
1821 secname = ".rela.dyn";
1825 secname = ".rel.dyn";
1831 else if (CONST_STRNEQ (secname, ".rel"))
1833 secname = secname[4] == 'a' ? ".rela.dyn" : ".rel.dyn";
1838 /* Look through the script to see where to place this section. */
1839 if (constraint == 0)
1840 for (os = lang_output_section_find (secname);
1842 os = next_matching_output_section_statement (os, 0))
1844 /* If we don't match an existing output section, tell
1845 lang_insert_orphan to create a new output section. */
1846 constraint = SPECIAL;
1848 if (os->bfd_section != NULL
1849 && (os->bfd_section->flags == 0
1850 || (_bfd_elf_match_sections_by_type (link_info.output_bfd,
1853 && ((s->flags ^ os->bfd_section->flags)
1854 & (SEC_LOAD | SEC_ALLOC)) == 0)))
1856 /* We already have an output section statement with this
1857 name, and its bfd section has compatible flags.
1858 If the section already exists but does not have any flags
1859 set, then it has been created by the linker, probably as a
1860 result of a --section-start command line switch. */
1861 lang_add_section (&os->children, s, os);
1865 /* Save unused output sections in case we can match them
1866 against orphans later. */
1867 if (os->bfd_section == NULL)
1871 /* If we didn't match an active output section, see if we matched an
1872 unused one and use that. */
1875 lang_add_section (&match_by_name->children, s, match_by_name);
1876 return match_by_name;
1879 if (!orphan_init_done)
1881 lang_output_section_statement_type *lookup;
1882 struct orphan_save *ho;
1884 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
1885 if (ho->name != NULL)
1887 ho->os = lang_output_section_find (ho->name);
1888 if (ho->os != NULL && ho->os->flags == 0)
1889 ho->os->flags = ho->flags;
1891 lookup = hold[orphan_bss].os;
1893 lookup = &lang_output_section_statement.head->output_section_statement;
1894 for (; lookup != NULL; lookup = lookup->next)
1895 if ((lookup->bfd_section != NULL
1896 && (lookup->bfd_section->flags & SEC_DEBUGGING) != 0)
1897 || strcmp (lookup->name, ".comment") == 0)
1899 hold[orphan_nonalloc].os = lookup ? lookup->prev : NULL;
1900 hold[orphan_nonalloc].name = ".comment";
1901 orphan_init_done = 1;
1904 /* If this is a final link, then always put .gnu.warning.SYMBOL
1905 sections into the .text section to get them out of the way. */
1906 if (link_info.executable
1907 && ! link_info.relocatable
1908 && CONST_STRNEQ (s->name, ".gnu.warning.")
1909 && hold[orphan_text].os != NULL)
1911 os = hold[orphan_text].os;
1912 lang_add_section (&os->children, s, os);
1916 /* Decide which segment the section should go in based on the
1917 section name and section flags. We put loadable .note sections
1918 right after the .interp section, so that the PT_NOTE segment is
1919 stored right after the program headers where the OS can read it
1920 in the first page. */
1923 if ((s->flags & (SEC_ALLOC | SEC_DEBUGGING)) == 0)
1924 place = &hold[orphan_nonalloc];
1925 else if ((s->flags & SEC_ALLOC) == 0)
1927 else if ((s->flags & SEC_LOAD) != 0
1928 && ((iself && sh_type == SHT_NOTE)
1929 || (!iself && CONST_STRNEQ (secname, ".note"))))
1930 place = &hold[orphan_interp];
1931 else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
1932 place = &hold[orphan_bss];
1933 else if ((s->flags & SEC_SMALL_DATA) != 0)
1934 place = &hold[orphan_sdata];
1935 else if ((s->flags & SEC_READONLY) == 0)
1936 place = &hold[orphan_data];
1937 else if (((iself && (sh_type == SHT_RELA || sh_type == SHT_REL))
1938 || (!iself && CONST_STRNEQ (secname, ".rel")))
1939 && (s->flags & SEC_LOAD) != 0)
1940 place = &hold[orphan_rel];
1941 else if ((s->flags & SEC_CODE) == 0)
1942 place = &hold[orphan_rodata];
1944 place = &hold[orphan_text];
1949 if (place->os == NULL)
1951 if (place->name != NULL)
1952 place->os = lang_output_section_find (place->name);
1954 place->os = output_rel_find (s, isdyn);
1958 after = lang_output_section_find_by_flags
1959 (s, &place->os, _bfd_elf_match_sections_by_type);
1961 /* *ABS* is always the first output section statement. */
1962 after = &lang_output_section_statement.head->output_section_statement;
1965 return lang_insert_orphan (s, secname, constraint, after, place, NULL, NULL);
1970 if test x"$LDEMUL_AFTER_ALLOCATION" != xgld"$EMULATION_NAME"_after_allocation; then
1974 gld${EMULATION_NAME}_after_allocation (void)
1976 bfd_boolean need_layout = bfd_elf_discard_info (link_info.output_bfd,
1978 gld${EMULATION_NAME}_map_segments (need_layout);
1983 if test x"$LDEMUL_GET_SCRIPT" != xgld"$EMULATION_NAME"_get_script; then
1987 gld${EMULATION_NAME}_get_script (int *isfile)
1990 if test -n "$COMPILE_IN"
1992 # Scripts compiled in.
1994 # sed commands to quote an ld script as a C string.
1995 sc="-f stringify.sed"
2001 if (link_info.relocatable && config.build_constructors)
2004 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
2005 echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
2006 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
2007 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
2008 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
2009 if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then : ; else
2010 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
2011 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
2013 if test -n "$GENERATE_PIE_SCRIPT" ; then
2014 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
2015 echo ' ; else if (link_info.pie && link_info.combreloc' >> e${EMULATION_NAME}.c
2016 echo ' && link_info.relro' >> e${EMULATION_NAME}.c
2017 echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
2018 sed $sc ldscripts/${EMULATION_NAME}.xdw >> e${EMULATION_NAME}.c
2019 echo ' ; else if (link_info.pie && link_info.combreloc) return' >> e${EMULATION_NAME}.c
2020 sed $sc ldscripts/${EMULATION_NAME}.xdc >> e${EMULATION_NAME}.c
2022 echo ' ; else if (link_info.pie) return' >> e${EMULATION_NAME}.c
2023 sed $sc ldscripts/${EMULATION_NAME}.xd >> e${EMULATION_NAME}.c
2025 if test -n "$GENERATE_SHLIB_SCRIPT" ; then
2026 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
2027 echo ' ; else if (link_info.shared && link_info.combreloc' >> e${EMULATION_NAME}.c
2028 echo ' && link_info.relro' >> e${EMULATION_NAME}.c
2029 echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
2030 sed $sc ldscripts/${EMULATION_NAME}.xsw >> e${EMULATION_NAME}.c
2031 echo ' ; else if (link_info.shared && link_info.combreloc) return' >> e${EMULATION_NAME}.c
2032 sed $sc ldscripts/${EMULATION_NAME}.xsc >> e${EMULATION_NAME}.c
2034 echo ' ; else if (link_info.shared) return' >> e${EMULATION_NAME}.c
2035 sed $sc ldscripts/${EMULATION_NAME}.xs >> e${EMULATION_NAME}.c
2037 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
2038 echo ' ; else if (link_info.combreloc && link_info.relro' >> e${EMULATION_NAME}.c
2039 echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
2040 sed $sc ldscripts/${EMULATION_NAME}.xw >> e${EMULATION_NAME}.c
2041 echo ' ; else if (link_info.combreloc) return' >> e${EMULATION_NAME}.c
2042 sed $sc ldscripts/${EMULATION_NAME}.xc >> e${EMULATION_NAME}.c
2044 echo ' ; else return' >> e${EMULATION_NAME}.c
2045 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
2046 echo '; }' >> e${EMULATION_NAME}.c
2049 # Scripts read from the filesystem.
2055 if (link_info.relocatable && config.build_constructors)
2056 return "ldscripts/${EMULATION_NAME}.xu";
2057 else if (link_info.relocatable)
2058 return "ldscripts/${EMULATION_NAME}.xr";
2059 else if (!config.text_read_only)
2060 return "ldscripts/${EMULATION_NAME}.xbn";
2062 if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then :
2065 else if (!config.magic_demand_paged)
2066 return "ldscripts/${EMULATION_NAME}.xn";
2069 if test -n "$GENERATE_PIE_SCRIPT" ; then
2070 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
2072 else if (link_info.pie && link_info.combreloc
2073 && link_info.relro && (link_info.flags & DF_BIND_NOW))
2074 return "ldscripts/${EMULATION_NAME}.xdw";
2075 else if (link_info.pie && link_info.combreloc)
2076 return "ldscripts/${EMULATION_NAME}.xdc";
2080 else if (link_info.pie)
2081 return "ldscripts/${EMULATION_NAME}.xd";
2084 if test -n "$GENERATE_SHLIB_SCRIPT" ; then
2085 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
2087 else if (link_info.shared && link_info.combreloc
2088 && link_info.relro && (link_info.flags & DF_BIND_NOW))
2089 return "ldscripts/${EMULATION_NAME}.xsw";
2090 else if (link_info.shared && link_info.combreloc)
2091 return "ldscripts/${EMULATION_NAME}.xsc";
2095 else if (link_info.shared)
2096 return "ldscripts/${EMULATION_NAME}.xs";
2099 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
2101 else if (link_info.combreloc && link_info.relro
2102 && (link_info.flags & DF_BIND_NOW))
2103 return "ldscripts/${EMULATION_NAME}.xw";
2104 else if (link_info.combreloc)
2105 return "ldscripts/${EMULATION_NAME}.xc";
2110 return "ldscripts/${EMULATION_NAME}.x";
2117 if test -n "$PARSE_AND_LIST_ARGS_CASES" -o x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2119 if test -n "$PARSE_AND_LIST_PROLOGUE" ; then
2121 $PARSE_AND_LIST_PROLOGUE
2127 #define OPTION_DISABLE_NEW_DTAGS (400)
2128 #define OPTION_ENABLE_NEW_DTAGS (OPTION_DISABLE_NEW_DTAGS + 1)
2129 #define OPTION_GROUP (OPTION_ENABLE_NEW_DTAGS + 1)
2130 #define OPTION_EH_FRAME_HDR (OPTION_GROUP + 1)
2131 #define OPTION_EXCLUDE_LIBS (OPTION_EH_FRAME_HDR + 1)
2132 #define OPTION_HASH_STYLE (OPTION_EXCLUDE_LIBS + 1)
2133 #define OPTION_BUILD_ID (OPTION_HASH_STYLE + 1)
2134 #define OPTION_AUDIT (OPTION_BUILD_ID + 1)
2137 gld${EMULATION_NAME}_add_options
2138 (int ns, char **shortopts, int nl, struct option **longopts,
2139 int nrl ATTRIBUTE_UNUSED, struct option **really_longopts ATTRIBUTE_UNUSED)
2141 static const char xtra_short[] = "${PARSE_AND_LIST_SHORTOPTS}z:P:";
2142 static const struct option xtra_long[] = {
2143 {"build-id", optional_argument, NULL, OPTION_BUILD_ID},
2144 {"audit", required_argument, NULL, OPTION_AUDIT},
2145 {"depaudit", required_argument, NULL, 'P'},
2148 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2150 {"disable-new-dtags", no_argument, NULL, OPTION_DISABLE_NEW_DTAGS},
2151 {"enable-new-dtags", no_argument, NULL, OPTION_ENABLE_NEW_DTAGS},
2152 {"eh-frame-hdr", no_argument, NULL, OPTION_EH_FRAME_HDR},
2153 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
2154 {"hash-style", required_argument, NULL, OPTION_HASH_STYLE},
2155 {"Bgroup", no_argument, NULL, OPTION_GROUP},
2159 if test -n "$PARSE_AND_LIST_LONGOPTS" ; then
2161 $PARSE_AND_LIST_LONGOPTS
2166 {NULL, no_argument, NULL, 0}
2169 *shortopts = (char *) xrealloc (*shortopts, ns + sizeof (xtra_short));
2170 memcpy (*shortopts + ns, &xtra_short, sizeof (xtra_short));
2171 *longopts = (struct option *)
2172 xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
2173 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
2176 #define DEFAULT_BUILD_ID_STYLE "sha1"
2179 gld${EMULATION_NAME}_handle_option (int optc)
2186 case OPTION_BUILD_ID:
2187 if (link_info.emit_note_gnu_build_id != NULL)
2189 free (link_info.emit_note_gnu_build_id);
2190 link_info.emit_note_gnu_build_id = NULL;
2193 optarg = DEFAULT_BUILD_ID_STYLE;
2194 if (strcmp (optarg, "none"))
2195 link_info.emit_note_gnu_build_id = xstrdup (optarg);
2198 gld${EMULATION_NAME}_append_to_separated_string (&audit, optarg);
2201 gld${EMULATION_NAME}_append_to_separated_string (&depaudit, optarg);
2206 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2208 case OPTION_DISABLE_NEW_DTAGS:
2209 link_info.new_dtags = FALSE;
2212 case OPTION_ENABLE_NEW_DTAGS:
2213 link_info.new_dtags = TRUE;
2216 case OPTION_EH_FRAME_HDR:
2217 link_info.eh_frame_hdr = TRUE;
2221 link_info.flags_1 |= (bfd_vma) DF_1_GROUP;
2222 /* Groups must be self-contained. */
2223 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
2224 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
2227 case OPTION_EXCLUDE_LIBS:
2228 add_excluded_libs (optarg);
2231 case OPTION_HASH_STYLE:
2232 link_info.emit_hash = FALSE;
2233 link_info.emit_gnu_hash = FALSE;
2234 if (strcmp (optarg, "sysv") == 0)
2235 link_info.emit_hash = TRUE;
2236 else if (strcmp (optarg, "gnu") == 0)
2237 link_info.emit_gnu_hash = TRUE;
2238 else if (strcmp (optarg, "both") == 0)
2240 link_info.emit_hash = TRUE;
2241 link_info.emit_gnu_hash = TRUE;
2244 einfo (_("%P%F: invalid hash style \`%s'\n"), optarg);
2248 if (strcmp (optarg, "initfirst") == 0)
2249 link_info.flags_1 |= (bfd_vma) DF_1_INITFIRST;
2250 else if (strcmp (optarg, "interpose") == 0)
2251 link_info.flags_1 |= (bfd_vma) DF_1_INTERPOSE;
2252 else if (strcmp (optarg, "loadfltr") == 0)
2253 link_info.flags_1 |= (bfd_vma) DF_1_LOADFLTR;
2254 else if (strcmp (optarg, "nodefaultlib") == 0)
2255 link_info.flags_1 |= (bfd_vma) DF_1_NODEFLIB;
2256 else if (strcmp (optarg, "nodelete") == 0)
2257 link_info.flags_1 |= (bfd_vma) DF_1_NODELETE;
2258 else if (strcmp (optarg, "nodlopen") == 0)
2259 link_info.flags_1 |= (bfd_vma) DF_1_NOOPEN;
2260 else if (strcmp (optarg, "nodump") == 0)
2261 link_info.flags_1 |= (bfd_vma) DF_1_NODUMP;
2262 else if (strcmp (optarg, "now") == 0)
2264 link_info.flags |= (bfd_vma) DF_BIND_NOW;
2265 link_info.flags_1 |= (bfd_vma) DF_1_NOW;
2267 else if (strcmp (optarg, "lazy") == 0)
2269 link_info.flags &= ~(bfd_vma) DF_BIND_NOW;
2270 link_info.flags_1 &= ~(bfd_vma) DF_1_NOW;
2272 else if (strcmp (optarg, "origin") == 0)
2274 link_info.flags |= (bfd_vma) DF_ORIGIN;
2275 link_info.flags_1 |= (bfd_vma) DF_1_ORIGIN;
2277 else if (strcmp (optarg, "defs") == 0)
2278 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
2279 else if (strcmp (optarg, "muldefs") == 0)
2280 link_info.allow_multiple_definition = TRUE;
2281 else if (strcmp (optarg, "combreloc") == 0)
2282 link_info.combreloc = TRUE;
2283 else if (strcmp (optarg, "nocombreloc") == 0)
2284 link_info.combreloc = FALSE;
2285 else if (strcmp (optarg, "nocopyreloc") == 0)
2286 link_info.nocopyreloc = TRUE;
2287 else if (strcmp (optarg, "execstack") == 0)
2289 link_info.execstack = TRUE;
2290 link_info.noexecstack = FALSE;
2292 else if (strcmp (optarg, "noexecstack") == 0)
2294 link_info.noexecstack = TRUE;
2295 link_info.execstack = FALSE;
2299 if test -n "$COMMONPAGESIZE"; then
2301 else if (strcmp (optarg, "relro") == 0)
2302 link_info.relro = TRUE;
2303 else if (strcmp (optarg, "norelro") == 0)
2304 link_info.relro = FALSE;
2309 else if (CONST_STRNEQ (optarg, "max-page-size="))
2313 config.maxpagesize = strtoul (optarg + 14, &end, 0);
2314 if (*end || (config.maxpagesize & (config.maxpagesize - 1)) != 0)
2315 einfo (_("%P%F: invalid maxium page size \`%s'\n"),
2318 else if (CONST_STRNEQ (optarg, "common-page-size="))
2321 config.commonpagesize = strtoul (optarg + 17, &end, 0);
2323 || (config.commonpagesize & (config.commonpagesize - 1)) != 0)
2324 einfo (_("%P%F: invalid common page size \`%s'\n"),
2327 /* What about the other Solaris -z options? FIXME. */
2332 if test -n "$PARSE_AND_LIST_ARGS_CASES" ; then
2334 $PARSE_AND_LIST_ARGS_CASES
2346 if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
2350 gld${EMULATION_NAME}_list_options (FILE * file)
2353 --build-id[=STYLE] Generate build ID note\n"));
2355 --audit=AUDITLIB Specify a library to use for auditing\n"));
2357 -P AUDITLIB, --depaudit=AUDITLIB\n" "\
2358 Specify a library to use for auditing dependencies\n"));
2361 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2364 -Bgroup Selects group name lookup rules for DSO\n"));
2366 --disable-new-dtags Disable new dynamic tags\n"));
2368 --enable-new-dtags Enable new dynamic tags\n"));
2370 --eh-frame-hdr Create .eh_frame_hdr section\n"));
2372 --hash-style=STYLE Set hash style to sysv, gnu or both\n"));
2374 -z combreloc Merge dynamic relocs into one section and sort\n"));
2376 -z defs Report unresolved symbols in object files.\n"));
2378 -z execstack Mark executable as requiring executable stack\n"));
2380 -z initfirst Mark DSO to be initialized first at runtime\n"));
2382 -z interpose Mark object to interpose all DSOs but executable\n"));
2384 -z lazy Mark object lazy runtime binding (default)\n"));
2386 -z loadfltr Mark object requiring immediate process\n"));
2388 -z muldefs Allow multiple definitions\n"));
2390 -z nocombreloc Don't merge dynamic relocs into one section\n"));
2392 -z nocopyreloc Don't create copy relocs\n"));
2394 -z nodefaultlib Mark object not to use default search paths\n"));
2396 -z nodelete Mark DSO non-deletable at runtime\n"));
2398 -z nodlopen Mark DSO not available to dlopen\n"));
2400 -z nodump Mark DSO not available to dldump\n"));
2402 -z noexecstack Mark executable as not requiring executable stack\n"));
2405 if test -n "$COMMONPAGESIZE"; then
2408 -z norelro Don't create RELRO program header\n"));
2414 -z now Mark object non-lazy runtime binding\n"));
2416 -z origin Mark object requiring immediate \$ORIGIN\n\
2417 processing at runtime\n"));
2420 if test -n "$COMMONPAGESIZE"; then
2423 -z relro Create RELRO program header\n"));
2429 -z max-page-size=SIZE Set maximum page size to SIZE\n"));
2431 -z common-page-size=SIZE Set common page size to SIZE\n"));
2433 -z KEYWORD Ignored for Solaris compatibility\n"));
2437 if test -n "$PARSE_AND_LIST_OPTIONS" ; then
2439 $PARSE_AND_LIST_OPTIONS
2447 if test -n "$PARSE_AND_LIST_EPILOGUE" ; then
2449 $PARSE_AND_LIST_EPILOGUE
2455 #define gld${EMULATION_NAME}_add_options NULL
2456 #define gld${EMULATION_NAME}_handle_option NULL
2458 if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
2460 #define gld${EMULATION_NAME}_list_options NULL
2467 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
2469 ${LDEMUL_BEFORE_PARSE-gld${EMULATION_NAME}_before_parse},
2470 ${LDEMUL_SYSLIB-syslib_default},
2471 ${LDEMUL_HLL-hll_default},
2472 ${LDEMUL_AFTER_PARSE-after_parse_default},
2473 ${LDEMUL_AFTER_OPEN-gld${EMULATION_NAME}_after_open},
2474 ${LDEMUL_AFTER_ALLOCATION-gld${EMULATION_NAME}_after_allocation},
2475 ${LDEMUL_SET_OUTPUT_ARCH-set_output_arch_default},
2476 ${LDEMUL_CHOOSE_TARGET-ldemul_default_target},
2477 ${LDEMUL_BEFORE_ALLOCATION-gld${EMULATION_NAME}_before_allocation},
2478 ${LDEMUL_GET_SCRIPT-gld${EMULATION_NAME}_get_script},
2479 "${EMULATION_NAME}",
2481 ${LDEMUL_FINISH-finish_default},
2482 ${LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS-NULL},
2483 ${LDEMUL_OPEN_DYNAMIC_ARCHIVE-gld${EMULATION_NAME}_open_dynamic_archive},
2484 ${LDEMUL_PLACE_ORPHAN-gld${EMULATION_NAME}_place_orphan},
2485 ${LDEMUL_SET_SYMBOLS-NULL},
2486 ${LDEMUL_PARSE_ARGS-NULL},
2487 gld${EMULATION_NAME}_add_options,
2488 gld${EMULATION_NAME}_handle_option,
2489 ${LDEMUL_UNRECOGNIZED_FILE-NULL},
2490 ${LDEMUL_LIST_OPTIONS-gld${EMULATION_NAME}_list_options},
2491 ${LDEMUL_RECOGNIZED_FILE-gld${EMULATION_NAME}_load_symbols},
2492 ${LDEMUL_FIND_POTENTIAL_LIBRARIES-NULL},
2493 ${LDEMUL_NEW_VERS_PATTERN-NULL}