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${EMULATION_NAME}_before_allocation (void);
65 static bfd_boolean gld${EMULATION_NAME}_place_orphan (asection *s);
66 static void gld${EMULATION_NAME}_finish (void);
70 if [ "x${USE_LIBPATH}" = xyes ] ; then
72 *-*-linux-* | *-*-k*bsd*-*)
82 # Import any needed special functions and/or overrides.
84 source_em ${srcdir}/emultempl/elf-generic.em
85 if test -n "$EXTRA_EM_FILE" ; then
86 source_em ${srcdir}/emultempl/${EXTRA_EM_FILE}.em
89 # Functions in this file can be overridden by setting the LDEMUL_* shell
90 # variables. If the name of the overriding function is the same as is
91 # defined in this file, then don't output this file's version.
92 # If a different overriding name is given then output the standard function
93 # as presumably it is called from the overriding function.
95 if test x"$LDEMUL_BEFORE_PARSE" != xgld"$EMULATION_NAME"_before_parse; then
99 gld${EMULATION_NAME}_before_parse (void)
101 ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
102 config.dynamic_link = ${DYNAMIC_LINK-TRUE};
103 config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo TRUE ; else echo FALSE ; fi`;
109 if test x"$LDEMUL_RECOGNIZED_FILE" != xgld"${EMULATION_NAME}"_load_symbols; then
111 /* Handle as_needed DT_NEEDED. */
114 gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *entry)
118 /* Tell the ELF linker that we don't want the output file to have a
119 DT_NEEDED entry for this file, unless it is used to resolve
120 references in a regular object. */
121 if (entry->as_needed)
122 class = DYN_AS_NEEDED;
124 /* Tell the ELF linker that we don't want the output file to have a
125 DT_NEEDED entry for any dynamic library in DT_NEEDED tags from
127 if (!entry->add_needed)
128 class |= DYN_NO_ADD_NEEDED;
130 if (entry->just_syms_flag
131 && (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) != 0)
132 einfo (_("%P%F: --just-symbols may not be used on DSO: %B\n"),
136 || (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) == 0)
139 bfd_elf_set_dyn_lib_class (entry->the_bfd, class);
141 /* Continue on with normal load_symbols processing. */
149 /* These variables are required to pass information back and forth
150 between after_open and check_needed and stat_needed and vercheck. */
152 static struct bfd_link_needed_list *global_needed;
153 static struct stat global_stat;
154 static lang_input_statement_type *global_found;
155 static struct bfd_link_needed_list *global_vercheck_needed;
156 static bfd_boolean global_vercheck_failed;
159 /* On Linux, it's possible to have different versions of the same
160 shared library linked against different versions of libc. The
161 dynamic linker somehow tags which libc version to use in
162 /etc/ld.so.cache, and, based on the libc that it sees in the
163 executable, chooses which version of the shared library to use.
165 We try to do a similar check here by checking whether this shared
166 library needs any other shared libraries which may conflict with
167 libraries we have already included in the link. If it does, we
168 skip it, and try to find another shared library farther on down the
171 This is called via lang_for_each_input_file.
172 GLOBAL_VERCHECK_NEEDED is the list of objects needed by the object
173 which we are checking. This sets GLOBAL_VERCHECK_FAILED if we find
174 a conflicting version. */
177 gld${EMULATION_NAME}_vercheck (lang_input_statement_type *s)
180 struct bfd_link_needed_list *l;
182 if (global_vercheck_failed)
184 if (s->the_bfd == NULL
185 || (bfd_get_file_flags (s->the_bfd) & DYNAMIC) == 0)
188 soname = bfd_elf_get_dt_soname (s->the_bfd);
190 soname = lbasename (bfd_get_filename (s->the_bfd));
192 for (l = global_vercheck_needed; l != NULL; l = l->next)
196 if (strcmp (soname, l->name) == 0)
198 /* Probably can't happen, but it's an easy check. */
202 if (strchr (l->name, '/') != NULL)
205 suffix = strstr (l->name, ".so.");
209 suffix += sizeof ".so." - 1;
211 if (strncmp (soname, l->name, suffix - l->name) == 0)
213 /* Here we know that S is a dynamic object FOO.SO.VER1, and
214 the object we are considering needs a dynamic object
215 FOO.SO.VER2, and VER1 and VER2 are different. This
216 appears to be a version mismatch, so we tell the caller
217 to try a different version of this library. */
218 global_vercheck_failed = TRUE;
225 /* See if an input file matches a DT_NEEDED entry by running stat on
229 gld${EMULATION_NAME}_stat_needed (lang_input_statement_type *s)
235 if (global_found != NULL)
237 if (s->the_bfd == NULL)
240 /* If this input file was an as-needed entry, and wasn't found to be
241 needed at the stage it was linked, then don't say we have loaded it. */
242 if ((bfd_elf_get_dyn_lib_class (s->the_bfd) & DYN_AS_NEEDED) != 0)
245 if (bfd_stat (s->the_bfd, &st) != 0)
247 einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd);
251 /* Some operating systems, e.g. Windows, do not provide a meaningful
252 st_ino; they always set it to zero. (Windows does provide a
253 meaningful st_dev.) Do not indicate a duplicate library in that
254 case. While there is no guarantee that a system that provides
255 meaningful inode numbers will never set st_ino to zero, this is
256 merely an optimization, so we do not need to worry about false
258 if (st.st_dev == global_stat.st_dev
259 && st.st_ino == global_stat.st_ino
266 /* We issue a warning if it looks like we are including two
267 different versions of the same shared library. For example,
268 there may be a problem if -lc picks up libc.so.6 but some other
269 shared library has a DT_NEEDED entry of libc.so.5. This is a
270 heuristic test, and it will only work if the name looks like
271 NAME.so.VERSION. FIXME: Depending on file names is error-prone.
272 If we really want to issue warnings about mixing version numbers
273 of shared libraries, we need to find a better way. */
275 if (strchr (global_needed->name, '/') != NULL)
277 suffix = strstr (global_needed->name, ".so.");
280 suffix += sizeof ".so." - 1;
282 soname = bfd_elf_get_dt_soname (s->the_bfd);
284 soname = lbasename (s->filename);
286 if (strncmp (soname, global_needed->name, suffix - global_needed->name) == 0)
287 einfo ("%P: warning: %s, needed by %B, may conflict with %s\n",
288 global_needed->name, global_needed->by, soname);
297 /* This function is called for each possible name for a dynamic object
298 named by a DT_NEEDED entry. The FORCE parameter indicates whether
299 to skip the check for a conflicting version. */
302 gld${EMULATION_NAME}_try_needed (struct dt_needed *needed,
306 const char *name = needed->name;
310 abfd = bfd_openr (name, bfd_get_target (link_info.output_bfd));
313 if (! bfd_check_format (abfd, bfd_object))
318 if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0)
324 /* For DT_NEEDED, they have to match. */
325 if (abfd->xvec != link_info.output_bfd->xvec)
331 /* Check whether this object would include any conflicting library
332 versions. If FORCE is set, then we skip this check; we use this
333 the second time around, if we couldn't find any compatible
334 instance of the shared library. */
338 struct bfd_link_needed_list *needed;
340 if (! bfd_elf_get_bfd_needed_list (abfd, &needed))
341 einfo ("%F%P:%B: bfd_elf_get_bfd_needed_list failed: %E\n", abfd);
345 global_vercheck_needed = needed;
346 global_vercheck_failed = FALSE;
347 lang_for_each_input_file (gld${EMULATION_NAME}_vercheck);
348 if (global_vercheck_failed)
351 /* Return FALSE to force the caller to move on to try
352 another file on the search path. */
356 /* But wait! It gets much worse. On Linux, if a shared
357 library does not use libc at all, we are supposed to skip
358 it the first time around in case we encounter a shared
359 library later on with the same name which does use the
360 version of libc that we want. This is much too horrible
361 to use on any system other than Linux. */
365 *-*-linux-* | *-*-k*bsd*-*)
368 struct bfd_link_needed_list *l;
370 for (l = needed; l != NULL; l = l->next)
371 if (CONST_STRNEQ (l->name, "libc.so"))
387 /* We've found a dynamic object matching the DT_NEEDED entry. */
389 /* We have already checked that there is no other input file of the
390 same name. We must now check again that we are not including the
391 same file twice. We need to do this because on many systems
392 libc.so is a symlink to, e.g., libc.so.1. The SONAME entry will
393 reference libc.so.1. If we have already included libc.so, we
394 don't want to include libc.so.1 if they are the same file, and we
395 can only check that using stat. */
397 if (bfd_stat (abfd, &global_stat) != 0)
398 einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd);
400 /* First strip off everything before the last '/'. */
401 soname = lbasename (abfd->filename);
403 if (trace_file_tries)
404 info_msg (_("found %s at %s\n"), soname, name);
407 lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed);
408 if (global_found != NULL)
410 /* Return TRUE to indicate that we found the file, even though
411 we aren't going to do anything with it. */
415 /* Specify the soname to use. */
416 bfd_elf_set_dt_needed_name (abfd, soname);
418 /* Tell the ELF linker that we don't want the output file to have a
419 DT_NEEDED entry for this file, unless it is used to resolve
420 references in a regular object. */
421 class = DYN_DT_NEEDED;
423 /* Tell the ELF linker that we don't want the output file to have a
424 DT_NEEDED entry for this file at all if the entry is from a file
425 with DYN_NO_ADD_NEEDED. */
426 if (needed->by != NULL
427 && (bfd_elf_get_dyn_lib_class (needed->by) & DYN_NO_ADD_NEEDED) != 0)
428 class |= DYN_NO_NEEDED | DYN_NO_ADD_NEEDED;
430 bfd_elf_set_dyn_lib_class (abfd, class);
432 /* Add this file into the symbol table. */
433 if (! bfd_link_add_symbols (abfd, &link_info))
434 einfo ("%F%B: could not read symbols: %E\n", abfd);
440 /* Search for a needed file in a path. */
443 gld${EMULATION_NAME}_search_needed (const char *path,
444 struct dt_needed *n, int force)
447 const char *name = n->name;
449 struct dt_needed needed;
452 return gld${EMULATION_NAME}_try_needed (n, force);
454 if (path == NULL || *path == '\0')
458 needed.name = n->name;
463 char *filename, *sset;
465 s = strchr (path, config.rpath_separator);
467 s = path + strlen (path);
469 filename = (char *) xmalloc (s - path + len + 2);
474 memcpy (filename, path, s - path);
475 filename[s - path] = '/';
476 sset = filename + (s - path) + 1;
480 needed.name = filename;
481 if (gld${EMULATION_NAME}_try_needed (&needed, force))
495 if [ "x${USE_LIBPATH}" = xyes ] ; then
498 /* Add the sysroot to every entry in a path separated by
499 config.rpath_separator. */
502 gld${EMULATION_NAME}_add_sysroot (const char *path)
511 if (path[i++] == config.rpath_separator)
517 len = len + (colons + 1) * strlen (ld_sysroot);
518 ret = xmalloc (len + 1);
519 strcpy (ret, ld_sysroot);
520 p = ret + strlen (ret);
523 if (path[i] == config.rpath_separator)
526 strcpy (p, ld_sysroot);
538 *-*-freebsd* | *-*-dragonfly*)
540 /* Read the system search path the FreeBSD way rather than the Linux way. */
541 #ifdef HAVE_ELF_HINTS_H
542 #include <elf-hints.h>
544 #include "elf-hints-local.h"
548 gld${EMULATION_NAME}_check_ld_elf_hints (const char *name, int force)
550 static bfd_boolean initialized;
551 static char *ld_elf_hints;
552 struct dt_needed needed;
559 tmppath = concat (ld_sysroot, _PATH_ELF_HINTS, (const char *) NULL);
560 f = fopen (tmppath, FOPEN_RB);
564 struct elfhints_hdr hdr;
566 if (fread (&hdr, 1, sizeof (hdr), f) == sizeof (hdr)
567 && hdr.magic == ELFHINTS_MAGIC
570 if (fseek (f, hdr.strtab + hdr.dirlist, SEEK_SET) != -1)
574 b = xmalloc (hdr.dirlistlen + 1);
575 if (fread (b, 1, hdr.dirlistlen + 1, f) ==
577 ld_elf_hints = gld${EMULATION_NAME}_add_sysroot (b);
588 if (ld_elf_hints == NULL)
593 return gld${EMULATION_NAME}_search_needed (ld_elf_hints, & needed,
600 *-*-linux-* | *-*-k*bsd*-*)
602 /* For a native linker, check the file /etc/ld.so.conf for directories
603 in which we may find shared libraries. /etc/ld.so.conf is really
604 only meaningful on Linux. */
606 struct gld${EMULATION_NAME}_ld_so_conf
613 gld${EMULATION_NAME}_parse_ld_so_conf
614 (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename);
617 gld${EMULATION_NAME}_parse_ld_so_conf_include
618 (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename,
626 if (pattern[0] != '/')
628 char *p = strrchr (filename, '/');
629 size_t patlen = strlen (pattern) + 1;
631 newp = xmalloc (p - filename + 1 + patlen);
632 memcpy (newp, filename, p - filename + 1);
633 memcpy (newp + (p - filename + 1), pattern, patlen);
638 if (glob (pattern, 0, NULL, &gl) == 0)
642 for (i = 0; i < gl.gl_pathc; ++i)
643 gld${EMULATION_NAME}_parse_ld_so_conf (info, gl.gl_pathv[i]);
647 /* If we do not have glob, treat the pattern as a literal filename. */
648 gld${EMULATION_NAME}_parse_ld_so_conf (info, pattern);
656 gld${EMULATION_NAME}_parse_ld_so_conf
657 (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename)
659 FILE *f = fopen (filename, FOPEN_RT);
667 line = xmalloc (linelen);
672 /* Normally this would use getline(3), but we need to be portable. */
673 while ((q = fgets (p, linelen - (p - line), f)) != NULL
674 && strlen (q) == linelen - (p - line) - 1
675 && line[linelen - 2] != '\n')
677 line = xrealloc (line, 2 * linelen);
678 p = line + linelen - 1;
682 if (q == NULL && p == line)
685 p = strchr (line, '\n');
689 /* Because the file format does not know any form of quoting we
690 can search forward for the next '#' character and if found
691 make it terminating the line. */
692 p = strchr (line, '#');
696 /* Remove leading whitespace. NUL is no whitespace character. */
698 while (*p == ' ' || *p == '\f' || *p == '\r' || *p == '\t' || *p == '\v')
701 /* If the line is blank it is ignored. */
705 if (CONST_STRNEQ (p, "include") && (p[7] == ' ' || p[7] == '\t'))
711 while (*p == ' ' || *p == '\t')
719 while (*p != ' ' && *p != '\t' && *p)
725 gld${EMULATION_NAME}_parse_ld_so_conf_include (info, filename,
733 while (*p && *p != '=' && *p != ' ' && *p != '\t' && *p != '\f'
734 && *p != '\r' && *p != '\v')
737 while (p != dir && p[-1] == '/')
739 if (info->path == NULL)
741 info->alloc = p - dir + 1 + 256;
742 info->path = xmalloc (info->alloc);
747 if (info->len + 1 + (p - dir) >= info->alloc)
749 info->alloc += p - dir + 256;
750 info->path = xrealloc (info->path, info->alloc);
752 info->path[info->len++] = config.rpath_separator;
754 memcpy (info->path + info->len, dir, p - dir);
755 info->len += p - dir;
756 info->path[info->len] = '\0';
766 gld${EMULATION_NAME}_check_ld_so_conf (const char *name, int force)
768 static bfd_boolean initialized;
769 static char *ld_so_conf;
770 struct dt_needed needed;
775 struct gld${EMULATION_NAME}_ld_so_conf info;
778 info.len = info.alloc = 0;
779 tmppath = concat (ld_sysroot, "${prefix}/etc/ld.so.conf",
780 (const char *) NULL);
781 if (!gld${EMULATION_NAME}_parse_ld_so_conf (&info, tmppath))
784 tmppath = concat (ld_sysroot, "/etc/ld.so.conf",
785 (const char *) NULL);
786 gld${EMULATION_NAME}_parse_ld_so_conf (&info, tmppath);
792 char *d = gld${EMULATION_NAME}_add_sysroot (info.path);
799 if (ld_so_conf == NULL)
805 return gld${EMULATION_NAME}_search_needed (ld_so_conf, &needed, force);
815 /* See if an input file matches a DT_NEEDED entry by name. */
818 gld${EMULATION_NAME}_check_needed (lang_input_statement_type *s)
822 /* Stop looking if we've found a loaded lib. */
823 if (global_found != NULL
824 && (bfd_elf_get_dyn_lib_class (global_found->the_bfd)
825 & DYN_AS_NEEDED) == 0)
828 if (s->filename == NULL || s->the_bfd == NULL)
831 /* Don't look for a second non-loaded as-needed lib. */
832 if (global_found != NULL
833 && (bfd_elf_get_dyn_lib_class (s->the_bfd) & DYN_AS_NEEDED) != 0)
836 if (strcmp (s->filename, global_needed->name) == 0)
842 if (s->search_dirs_flag)
844 const char *f = strrchr (s->filename, '/');
846 && strcmp (f + 1, global_needed->name) == 0)
853 soname = bfd_elf_get_dt_soname (s->the_bfd);
855 && strcmp (soname, global_needed->name) == 0)
864 if test x"$LDEMUL_AFTER_OPEN" != xgld"$EMULATION_NAME"_after_open; then
868 gld${EMULATION_NAME}_id_note_section_size (bfd *abfd,
869 struct bfd_link_info *link_info)
871 const char *style = link_info->emit_note_gnu_build_id;
876 size = offsetof (Elf_External_Note, name[sizeof "GNU"]);
877 size = (size + 3) & -(bfd_size_type) 4;
879 if (!strcmp (style, "md5") || !strcmp (style, "uuid"))
881 else if (!strcmp (style, "sha1"))
883 else if (!strncmp (style, "0x", 2))
885 /* ID is in string form (hex). Convert to bits. */
886 const char *id = style + 2;
889 if (ISXDIGIT (id[0]) && ISXDIGIT (id[1]))
894 else if (*id == '-' || *id == ':')
901 } while (*id != '\0');
910 read_hex (const char xdigit)
912 if (ISDIGIT (xdigit))
914 if (ISUPPER (xdigit))
915 return xdigit - 'A' + 0xa;
916 if (ISLOWER (xdigit))
917 return xdigit - 'a' + 0xa;
929 gld${EMULATION_NAME}_write_build_id_section (bfd *abfd)
931 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
932 struct build_id_info *info =
933 elf_tdata (abfd)->after_write_object_contents_info;
935 Elf_Internal_Shdr *i_shdr;
936 unsigned char *contents, *id_bits;
938 Elf_External_Note *e_note;
941 if (bfd_is_abs_section (asec->output_section))
943 einfo (_("%P: warning: .note.gnu.build-id section discarded,"
944 " --build-id ignored.\n"));
947 i_shdr = &elf_section_data (asec->output_section)->this_hdr;
949 if (i_shdr->contents == NULL)
951 if (asec->contents == NULL)
952 asec->contents = xmalloc (asec->size);
953 contents = asec->contents;
956 contents = i_shdr->contents + asec->output_offset;
958 e_note = (void *) contents;
959 size = offsetof (Elf_External_Note, name[sizeof "GNU"]);
960 size = (size + 3) & -(bfd_size_type) 4;
961 id_bits = contents + size;
962 size = asec->size - size;
964 bfd_h_put_32 (abfd, sizeof "GNU", &e_note->namesz);
965 bfd_h_put_32 (abfd, size, &e_note->descsz);
966 bfd_h_put_32 (abfd, NT_GNU_BUILD_ID, &e_note->type);
967 memcpy (e_note->name, "GNU", sizeof "GNU");
969 if (!strcmp (info->style, "md5"))
973 if (bed->s->checksum_contents (abfd,
974 (void (*) (const void *, size_t, void *))
977 md5_finish_ctx (&ctx, id_bits);
981 else if (!strcmp (info->style, "sha1"))
984 sha1_init_ctx (&ctx);
985 if (bed->s->checksum_contents (abfd,
986 (void (*) (const void *, size_t, void *))
989 sha1_finish_ctx (&ctx, id_bits);
993 else if (!strcmp (info->style, "uuid"))
996 int fd = open ("/dev/urandom", O_RDONLY);
999 n = read (fd, id_bits, size);
1004 else if (!strncmp (info->style, "0x", 2))
1006 /* ID is in string form (hex). Convert to bits. */
1007 const char *id = info->style + 2;
1011 if (ISXDIGIT (id[0]) && ISXDIGIT (id[1]))
1013 id_bits[n] = read_hex (*id++) << 4;
1014 id_bits[n++] |= read_hex (*id++);
1016 else if (*id == '-' || *id == ':')
1019 abort (); /* Should have been validated earlier. */
1020 } while (*id != '\0');
1023 abort (); /* Should have been validated earlier. */
1026 return (bfd_seek (abfd,
1027 i_shdr->sh_offset + asec->output_offset, SEEK_SET) == 0
1028 && bfd_bwrite (contents, size, abfd) == size);
1032 /* This is called after all the input files have been opened. */
1035 gld${EMULATION_NAME}_after_open (void)
1037 struct bfd_link_needed_list *needed, *l;
1038 struct elf_link_hash_table *htab;
1040 htab = elf_hash_table (&link_info);
1041 if (!is_elf_hash_table (htab))
1044 if (link_info.emit_note_gnu_build_id)
1050 abfd = link_info.input_bfds;
1052 size = gld${EMULATION_NAME}_id_note_section_size (abfd, &link_info);
1055 einfo ("%P: warning: unrecognized --build-id style ignored.\n");
1056 free (link_info.emit_note_gnu_build_id);
1057 link_info.emit_note_gnu_build_id = NULL;
1061 s = bfd_make_section_with_flags (abfd, ".note.gnu.build-id",
1062 SEC_ALLOC | SEC_LOAD
1063 | SEC_IN_MEMORY | SEC_LINKER_CREATED
1064 | SEC_READONLY | SEC_DATA);
1065 if (s != NULL && bfd_set_section_alignment (abfd, s, 2))
1067 struct elf_obj_tdata *t = elf_tdata (link_info.output_bfd);
1068 struct build_id_info *b = xmalloc (sizeof *b);
1069 b->style = link_info.emit_note_gnu_build_id;
1071 elf_section_type (s) = SHT_NOTE;
1073 t->after_write_object_contents
1074 = &gld${EMULATION_NAME}_write_build_id_section;
1075 t->after_write_object_contents_info = b;
1079 einfo ("%P: warning: Cannot create .note.gnu.build-id section,"
1080 " --build-id ignored.\n");
1081 free (link_info.emit_note_gnu_build_id);
1082 link_info.emit_note_gnu_build_id = NULL;
1087 if (link_info.relocatable)
1090 if (link_info.eh_frame_hdr
1091 && !link_info.traditional_format)
1096 for (abfd = link_info.input_bfds; abfd; abfd = abfd->link_next)
1098 s = bfd_get_section_by_name (abfd, ".eh_frame");
1099 if (s && s->size > 8 && !bfd_is_abs_section (s->output_section))
1104 const struct elf_backend_data *bed;
1106 bed = get_elf_backend_data (abfd);
1107 s = bfd_make_section_with_flags (abfd, ".eh_frame_hdr",
1108 bed->dynamic_sec_flags
1111 && bfd_set_section_alignment (abfd, s, 2))
1112 htab->eh_info.hdr_sec = s;
1114 einfo ("%P: warning: Cannot create .eh_frame_hdr section,"
1115 " --eh-frame-hdr ignored.\n");
1119 /* Get the list of files which appear in DT_NEEDED entries in
1120 dynamic objects included in the link (often there will be none).
1121 For each such file, we want to track down the corresponding
1122 library, and include the symbol table in the link. This is what
1123 the runtime dynamic linker will do. Tracking the files down here
1124 permits one dynamic object to include another without requiring
1125 special action by the person doing the link. Note that the
1126 needed list can actually grow while we are stepping through this
1128 if (!link_info.executable)
1130 needed = bfd_elf_get_needed_list (link_info.output_bfd, &link_info);
1131 for (l = needed; l != NULL; l = l->next)
1133 struct bfd_link_needed_list *ll;
1134 struct dt_needed n, nn;
1137 /* If the lib that needs this one was --as-needed and wasn't
1138 found to be needed, then this lib isn't needed either. */
1140 && (bfd_elf_get_dyn_lib_class (l->by) & DYN_AS_NEEDED) != 0)
1143 /* If we've already seen this file, skip it. */
1144 for (ll = needed; ll != l; ll = ll->next)
1146 || (bfd_elf_get_dyn_lib_class (ll->by) & DYN_AS_NEEDED) == 0)
1147 && strcmp (ll->name, l->name) == 0)
1152 /* See if this file was included in the link explicitly. */
1154 global_found = NULL;
1155 lang_for_each_input_file (gld${EMULATION_NAME}_check_needed);
1156 if (global_found != NULL
1157 && (bfd_elf_get_dyn_lib_class (global_found->the_bfd)
1158 & DYN_AS_NEEDED) == 0)
1164 if (trace_file_tries)
1165 info_msg (_("%s needed by %B\n"), l->name, l->by);
1167 /* As-needed libs specified on the command line (or linker script)
1168 take priority over libs found in search dirs. */
1169 if (global_found != NULL)
1171 nn.name = global_found->filename;
1172 if (gld${EMULATION_NAME}_try_needed (&nn, TRUE))
1176 /* We need to find this file and include the symbol table. We
1177 want to search for the file in the same way that the dynamic
1178 linker will search. That means that we want to use
1179 rpath_link, rpath, then the environment variable
1180 LD_LIBRARY_PATH (native only), then the DT_RPATH/DT_RUNPATH
1181 entries (native only), then the linker script LIB_SEARCH_DIRS.
1182 We do not search using the -L arguments.
1184 We search twice. The first time, we skip objects which may
1185 introduce version mismatches. The second time, we force
1186 their use. See gld${EMULATION_NAME}_vercheck comment. */
1187 for (force = 0; force < 2; force++)
1190 search_dirs_type *search;
1192 if [ "x${NATIVE}" = xyes ] ; then
1194 const char *lib_path;
1197 if [ "x${USE_LIBPATH}" = xyes ] ; then
1199 struct bfd_link_needed_list *rp;
1205 if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link,
1209 if [ "x${USE_LIBPATH}" = xyes ] ; then
1211 if (gld${EMULATION_NAME}_search_needed (command_line.rpath,
1216 if [ "x${NATIVE}" = xyes ] ; then
1218 if (command_line.rpath_link == NULL
1219 && command_line.rpath == NULL)
1221 lib_path = (const char *) getenv ("LD_RUN_PATH");
1222 if (gld${EMULATION_NAME}_search_needed (lib_path, &n,
1226 lib_path = (const char *) getenv ("LD_LIBRARY_PATH");
1227 if (gld${EMULATION_NAME}_search_needed (lib_path, &n, force))
1231 if [ "x${USE_LIBPATH}" = xyes ] ; then
1234 rp = bfd_elf_get_runpath_list (link_info.output_bfd, &link_info);
1235 for (; !found && rp != NULL; rp = rp->next)
1237 char *tmpname = gld${EMULATION_NAME}_add_sysroot (rp->name);
1238 found = (rp->by == l->by
1239 && gld${EMULATION_NAME}_search_needed (tmpname,
1249 if [ "x${USE_LIBPATH}" = xyes ] ; then
1251 *-*-freebsd* | *-*-dragonfly*)
1253 if (gld${EMULATION_NAME}_check_ld_elf_hints (l->name, force))
1259 *-*-linux-* | *-*-k*bsd*-*)
1262 if (gld${EMULATION_NAME}_check_ld_so_conf (l->name, force))
1270 len = strlen (l->name);
1271 for (search = search_head; search != NULL; search = search->next)
1275 if (search->cmdline)
1277 filename = (char *) xmalloc (strlen (search->name) + len + 2);
1278 sprintf (filename, "%s/%s", search->name, l->name);
1280 if (gld${EMULATION_NAME}_try_needed (&nn, force))
1293 einfo ("%P: warning: %s, needed by %B, not found (try using -rpath or -rpath-link)\n",
1303 /* Look through an expression for an assignment statement. */
1306 gld${EMULATION_NAME}_find_exp_assignment (etree_type *exp)
1308 bfd_boolean provide = FALSE;
1310 switch (exp->type.node_class)
1316 /* We call record_link_assignment even if the symbol is defined.
1317 This is because if it is defined by a dynamic object, we
1318 actually want to use the value defined by the linker script,
1319 not the value from the dynamic object (because we are setting
1320 symbols like etext). If the symbol is defined by a regular
1321 object, then, as it happens, calling record_link_assignment
1323 if (strcmp (exp->assign.dst, ".") != 0)
1325 if (!bfd_elf_record_link_assignment (link_info.output_bfd,
1327 exp->assign.dst, provide,
1328 exp->assign.hidden))
1329 einfo ("%P%F: failed to record assignment to %s: %E\n",
1332 gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src);
1336 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs);
1337 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs);
1341 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond);
1342 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs);
1343 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs);
1347 gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child);
1356 /* This is called by the before_allocation routine via
1357 lang_for_each_statement. It locates any assignment statements, and
1358 tells the ELF backend about them, in case they are assignments to
1359 symbols which are referred to by dynamic objects. */
1362 gld${EMULATION_NAME}_find_statement_assignment (lang_statement_union_type *s)
1364 if (s->header.type == lang_assignment_statement_enum)
1365 gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp);
1370 if test x"$LDEMUL_BEFORE_ALLOCATION" != xgld"$EMULATION_NAME"_before_allocation; then
1371 if test x"${ELF_INTERPRETER_NAME+set}" = xset; then
1372 ELF_INTERPRETER_SET_DEFAULT="
1373 if (sinterp != NULL)
1375 sinterp->contents = (unsigned char *) ${ELF_INTERPRETER_NAME};
1376 sinterp->size = strlen ((char *) sinterp->contents) + 1;
1381 ELF_INTERPRETER_SET_DEFAULT=
1385 /* This is called after the sections have been attached to output
1386 sections, but before any sizes or addresses have been set. */
1389 gld${EMULATION_NAME}_before_allocation (void)
1394 if (link_info.hash->type == bfd_link_elf_hash_table)
1395 _bfd_elf_tls_setup (link_info.output_bfd, &link_info);
1397 /* If we are going to make any variable assignments, we need to let
1398 the ELF backend know about them in case the variables are
1399 referred to by dynamic objects. */
1400 lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment);
1402 /* Let the ELF backend work out the sizes of any sections required
1403 by dynamic linking. */
1404 rpath = command_line.rpath;
1406 rpath = (const char *) getenv ("LD_RUN_PATH");
1407 if (! (bfd_elf_size_dynamic_sections
1408 (link_info.output_bfd, command_line.soname, rpath,
1409 command_line.filter_shlib,
1410 (const char * const *) command_line.auxiliary_filters,
1411 &link_info, &sinterp, lang_elf_version_info)))
1412 einfo ("%P%F: failed to set dynamic section sizes: %E\n");
1414 ${ELF_INTERPRETER_SET_DEFAULT}
1415 /* Let the user override the dynamic linker we are using. */
1416 if (command_line.interpreter != NULL
1419 sinterp->contents = (bfd_byte *) command_line.interpreter;
1420 sinterp->size = strlen (command_line.interpreter) + 1;
1423 /* Look for any sections named .gnu.warning. As a GNU extensions,
1424 we treat such sections as containing warning messages. We print
1425 out the warning message, and then zero out the section size so
1426 that it does not get copied into the output file. */
1429 LANG_FOR_EACH_INPUT_STATEMENT (is)
1436 if (is->just_syms_flag)
1439 s = bfd_get_section_by_name (is->the_bfd, ".gnu.warning");
1444 msg = xmalloc ((size_t) (sz + 1));
1445 if (! bfd_get_section_contents (is->the_bfd, s, msg,
1447 einfo ("%F%B: Can't read contents of section .gnu.warning: %E\n",
1450 ret = link_info.callbacks->warning (&link_info, msg,
1451 (const char *) NULL,
1452 is->the_bfd, (asection *) NULL,
1457 /* Clobber the section size, so that we don't waste space
1458 copying the warning into the output file. If we've already
1459 sized the output section, adjust its size. The adjustment
1460 is on rawsize because targets that size sections early will
1461 have called lang_reset_memory_regions after sizing. */
1462 if (s->output_section != NULL
1463 && s->output_section->rawsize >= s->size)
1464 s->output_section->rawsize -= s->size;
1468 /* Also set SEC_EXCLUDE, so that local symbols defined in the
1469 warning section don't get copied to the output. */
1470 s->flags |= SEC_EXCLUDE | SEC_KEEP;
1474 before_allocation_default ();
1476 if (!bfd_elf_size_dynsym_hash_dynstr (link_info.output_bfd, &link_info))
1477 einfo ("%P%F: failed to set dynamic section sizes: %E\n");
1483 if test x"$LDEMUL_OPEN_DYNAMIC_ARCHIVE" != xgld"$EMULATION_NAME"_open_dynamic_archive; then
1486 /* Try to open a dynamic archive. This is where we know that ELF
1487 dynamic libraries have an extension of .so (or .sl on oddball systems
1491 gld${EMULATION_NAME}_open_dynamic_archive
1492 (const char *arch, search_dirs_type *search, lang_input_statement_type *entry)
1494 const char *filename;
1497 if (! entry->is_archive)
1500 filename = entry->filename;
1502 /* This allocates a few bytes too many when EXTRA_SHLIB_EXTENSION
1503 is defined, but it does not seem worth the headache to optimize
1504 away those two bytes of space. */
1505 string = (char *) xmalloc (strlen (search->name)
1508 #ifdef EXTRA_SHLIB_EXTENSION
1509 + strlen (EXTRA_SHLIB_EXTENSION)
1511 + sizeof "/lib.so");
1513 sprintf (string, "%s/lib%s%s.so", search->name, filename, arch);
1515 #ifdef EXTRA_SHLIB_EXTENSION
1516 /* Try the .so extension first. If that fails build a new filename
1517 using EXTRA_SHLIB_EXTENSION. */
1518 if (! ldfile_try_open_bfd (string, entry))
1520 sprintf (string, "%s/lib%s%s%s", search->name,
1521 filename, arch, EXTRA_SHLIB_EXTENSION);
1524 if (! ldfile_try_open_bfd (string, entry))
1529 #ifdef EXTRA_SHLIB_EXTENSION
1533 entry->filename = string;
1535 /* We have found a dynamic object to include in the link. The ELF
1536 backend linker will create a DT_NEEDED entry in the .dynamic
1537 section naming this file. If this file includes a DT_SONAME
1538 entry, it will be used. Otherwise, the ELF linker will just use
1539 the name of the file. For an archive found by searching, like
1540 this one, the DT_NEEDED entry should consist of just the name of
1541 the file, without the path information used to find it. Note
1542 that we only need to do this if we have a dynamic object; an
1543 archive will never be referenced by a DT_NEEDED entry.
1545 FIXME: This approach--using bfd_elf_set_dt_needed_name--is not
1546 very pretty. I haven't been able to think of anything that is
1548 if (bfd_check_format (entry->the_bfd, bfd_object)
1549 && (entry->the_bfd->flags & DYNAMIC) != 0)
1551 ASSERT (entry->is_archive && entry->search_dirs_flag);
1553 /* Rather than duplicating the logic above. Just use the
1554 filename we recorded earlier. */
1556 filename = lbasename (entry->filename);
1557 bfd_elf_set_dt_needed_name (entry->the_bfd, filename);
1566 if test x"$LDEMUL_PLACE_ORPHAN" != xgld"$EMULATION_NAME"_place_orphan; then
1569 /* A variant of lang_output_section_find used by place_orphan. */
1571 static lang_output_section_statement_type *
1572 output_rel_find (asection *sec, int isdyn)
1574 lang_output_section_statement_type *lookup;
1575 lang_output_section_statement_type *last = NULL;
1576 lang_output_section_statement_type *last_alloc = NULL;
1577 lang_output_section_statement_type *last_ro_alloc = NULL;
1578 lang_output_section_statement_type *last_rel = NULL;
1579 lang_output_section_statement_type *last_rel_alloc = NULL;
1580 int rela = sec->name[4] == 'a';
1582 for (lookup = &lang_output_section_statement.head->output_section_statement;
1584 lookup = lookup->next)
1586 if (lookup->constraint != -1
1587 && CONST_STRNEQ (lookup->name, ".rel"))
1589 int lookrela = lookup->name[4] == 'a';
1591 /* .rel.dyn must come before all other reloc sections, to suit
1596 /* Don't place after .rel.plt as doing so results in wrong
1598 if (strcmp (".plt", lookup->name + 4 + lookrela) == 0)
1601 if (rela == lookrela || last_rel == NULL)
1603 if ((rela == lookrela || last_rel_alloc == NULL)
1604 && lookup->bfd_section != NULL
1605 && (lookup->bfd_section->flags & SEC_ALLOC) != 0)
1606 last_rel_alloc = lookup;
1610 if (lookup->bfd_section != NULL
1611 && (lookup->bfd_section->flags & SEC_ALLOC) != 0)
1613 last_alloc = lookup;
1614 if ((lookup->bfd_section->flags & SEC_READONLY) != 0)
1615 last_ro_alloc = lookup;
1620 return last_rel_alloc;
1626 return last_ro_alloc;
1634 /* Place an orphan section. We use this to put random SHF_ALLOC
1635 sections in the right segment. */
1638 gld${EMULATION_NAME}_place_orphan (asection *s)
1640 static struct orphan_save hold[] =
1643 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
1646 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1649 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
1655 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1658 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1661 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_SMALL_DATA,
1664 enum orphan_save_index
1674 static int orphan_init_done = 0;
1675 struct orphan_save *place;
1676 const char *secname;
1677 lang_output_section_statement_type *after;
1678 lang_output_section_statement_type *os;
1680 int iself = s->owner->xvec->flavour == bfd_target_elf_flavour;
1681 unsigned int sh_type = iself ? elf_section_type (s) : SHT_NULL;
1683 secname = bfd_get_section_name (s->owner, s);
1685 if (! link_info.relocatable
1686 && link_info.combreloc
1687 && (s->flags & SEC_ALLOC))
1693 secname = ".rela.dyn";
1697 secname = ".rel.dyn";
1703 else if (CONST_STRNEQ (secname, ".rel"))
1705 secname = secname[4] == 'a' ? ".rela.dyn" : ".rel.dyn";
1710 if (isdyn || (!config.unique_orphan_sections && !unique_section_p (s)))
1712 /* Look through the script to see where to place this section. */
1713 os = lang_output_section_find (secname);
1716 && (os->bfd_section == NULL
1717 || os->bfd_section->flags == 0
1718 || (_bfd_elf_match_sections_by_type (link_info.output_bfd,
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, if any, 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);
1734 if (!orphan_init_done)
1736 struct orphan_save *ho;
1737 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
1738 if (ho->name != NULL)
1740 ho->os = lang_output_section_find (ho->name);
1741 if (ho->os != NULL && ho->os->flags == 0)
1742 ho->os->flags = ho->flags;
1744 orphan_init_done = 1;
1747 /* If this is a final link, then always put .gnu.warning.SYMBOL
1748 sections into the .text section to get them out of the way. */
1749 if (link_info.executable
1750 && ! link_info.relocatable
1751 && CONST_STRNEQ (secname, ".gnu.warning.")
1752 && hold[orphan_text].os != NULL)
1754 lang_add_section (&hold[orphan_text].os->children, s,
1755 hold[orphan_text].os);
1759 /* Decide which segment the section should go in based on the
1760 section name and section flags. We put loadable .note sections
1761 right after the .interp section, so that the PT_NOTE segment is
1762 stored right after the program headers where the OS can read it
1763 in the first page. */
1766 if ((s->flags & SEC_ALLOC) == 0)
1768 else if ((s->flags & SEC_LOAD) != 0
1769 && ((iself && sh_type == SHT_NOTE)
1770 || (!iself && CONST_STRNEQ (secname, ".note"))))
1771 place = &hold[orphan_interp];
1772 else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
1773 place = &hold[orphan_bss];
1774 else if ((s->flags & SEC_SMALL_DATA) != 0)
1775 place = &hold[orphan_sdata];
1776 else if ((s->flags & SEC_READONLY) == 0)
1777 place = &hold[orphan_data];
1778 else if (((iself && (sh_type == SHT_RELA || sh_type == SHT_REL))
1779 || (!iself && CONST_STRNEQ (secname, ".rel")))
1780 && (s->flags & SEC_LOAD) != 0)
1781 place = &hold[orphan_rel];
1782 else if ((s->flags & SEC_CODE) == 0)
1783 place = &hold[orphan_rodata];
1785 place = &hold[orphan_text];
1790 if (place->os == NULL)
1792 if (place->name != NULL)
1793 place->os = lang_output_section_find (place->name);
1795 place->os = output_rel_find (s, isdyn);
1799 after = lang_output_section_find_by_flags
1800 (s, &place->os, _bfd_elf_match_sections_by_type);
1802 /* *ABS* is always the first output section statement. */
1803 after = &lang_output_section_statement.head->output_section_statement;
1806 /* Choose a unique name for the section. This will be needed if the
1807 same section name appears in the input file with different
1808 loadable or allocatable characteristics. */
1809 if (bfd_get_section_by_name (link_info.output_bfd, secname) != NULL)
1811 static int count = 1;
1812 secname = bfd_get_unique_section_name (link_info.output_bfd,
1814 if (secname == NULL)
1815 einfo ("%F%P: place_orphan failed: %E\n");
1818 lang_insert_orphan (s, secname, after, place, NULL, NULL);
1825 if test x"$LDEMUL_FINISH" != xgld"$EMULATION_NAME"_finish; then
1829 gld${EMULATION_NAME}_finish (void)
1831 bfd_boolean need_layout = bfd_elf_discard_info (link_info.output_bfd,
1834 gld${EMULATION_NAME}_map_segments (need_layout);
1840 if test x"$LDEMUL_GET_SCRIPT" != xgld"$EMULATION_NAME"_get_script; then
1844 gld${EMULATION_NAME}_get_script (int *isfile)
1847 if test -n "$COMPILE_IN"
1849 # Scripts compiled in.
1851 # sed commands to quote an ld script as a C string.
1852 sc="-f stringify.sed"
1858 if (link_info.relocatable && config.build_constructors)
1861 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1862 echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
1863 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
1864 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
1865 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
1866 if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then : ; else
1867 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
1868 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
1870 if test -n "$GENERATE_PIE_SCRIPT" ; then
1871 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1872 echo ' ; else if (link_info.pie && link_info.combreloc' >> e${EMULATION_NAME}.c
1873 echo ' && link_info.relro' >> e${EMULATION_NAME}.c
1874 echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
1875 sed $sc ldscripts/${EMULATION_NAME}.xdw >> e${EMULATION_NAME}.c
1876 echo ' ; else if (link_info.pie && link_info.combreloc) return' >> e${EMULATION_NAME}.c
1877 sed $sc ldscripts/${EMULATION_NAME}.xdc >> e${EMULATION_NAME}.c
1879 echo ' ; else if (link_info.pie) return' >> e${EMULATION_NAME}.c
1880 sed $sc ldscripts/${EMULATION_NAME}.xd >> e${EMULATION_NAME}.c
1882 if test -n "$GENERATE_SHLIB_SCRIPT" ; then
1883 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1884 echo ' ; else if (link_info.shared && link_info.combreloc' >> e${EMULATION_NAME}.c
1885 echo ' && link_info.relro' >> e${EMULATION_NAME}.c
1886 echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
1887 sed $sc ldscripts/${EMULATION_NAME}.xsw >> e${EMULATION_NAME}.c
1888 echo ' ; else if (link_info.shared && link_info.combreloc) return' >> e${EMULATION_NAME}.c
1889 sed $sc ldscripts/${EMULATION_NAME}.xsc >> e${EMULATION_NAME}.c
1891 echo ' ; else if (link_info.shared) return' >> e${EMULATION_NAME}.c
1892 sed $sc ldscripts/${EMULATION_NAME}.xs >> e${EMULATION_NAME}.c
1894 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1895 echo ' ; else if (link_info.combreloc && link_info.relro' >> e${EMULATION_NAME}.c
1896 echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
1897 sed $sc ldscripts/${EMULATION_NAME}.xw >> e${EMULATION_NAME}.c
1898 echo ' ; else if (link_info.combreloc) return' >> e${EMULATION_NAME}.c
1899 sed $sc ldscripts/${EMULATION_NAME}.xc >> e${EMULATION_NAME}.c
1901 echo ' ; else return' >> e${EMULATION_NAME}.c
1902 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
1903 echo '; }' >> e${EMULATION_NAME}.c
1906 # Scripts read from the filesystem.
1912 if (link_info.relocatable && config.build_constructors)
1913 return "ldscripts/${EMULATION_NAME}.xu";
1914 else if (link_info.relocatable)
1915 return "ldscripts/${EMULATION_NAME}.xr";
1916 else if (!config.text_read_only)
1917 return "ldscripts/${EMULATION_NAME}.xbn";
1919 if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then :
1922 else if (!config.magic_demand_paged)
1923 return "ldscripts/${EMULATION_NAME}.xn";
1926 if test -n "$GENERATE_PIE_SCRIPT" ; then
1927 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1929 else if (link_info.pie && link_info.combreloc
1930 && link_info.relro && (link_info.flags & DF_BIND_NOW))
1931 return "ldscripts/${EMULATION_NAME}.xdw";
1932 else if (link_info.pie && link_info.combreloc)
1933 return "ldscripts/${EMULATION_NAME}.xdc";
1937 else if (link_info.pie)
1938 return "ldscripts/${EMULATION_NAME}.xd";
1941 if test -n "$GENERATE_SHLIB_SCRIPT" ; then
1942 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1944 else if (link_info.shared && link_info.combreloc
1945 && link_info.relro && (link_info.flags & DF_BIND_NOW))
1946 return "ldscripts/${EMULATION_NAME}.xsw";
1947 else if (link_info.shared && link_info.combreloc)
1948 return "ldscripts/${EMULATION_NAME}.xsc";
1952 else if (link_info.shared)
1953 return "ldscripts/${EMULATION_NAME}.xs";
1956 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1958 else if (link_info.combreloc && link_info.relro
1959 && (link_info.flags & DF_BIND_NOW))
1960 return "ldscripts/${EMULATION_NAME}.xw";
1961 else if (link_info.combreloc)
1962 return "ldscripts/${EMULATION_NAME}.xc";
1967 return "ldscripts/${EMULATION_NAME}.x";
1974 if test -n "$PARSE_AND_LIST_ARGS_CASES" -o x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1976 if test -n "$PARSE_AND_LIST_PROLOGUE" ; then
1978 $PARSE_AND_LIST_PROLOGUE
1984 #define OPTION_DISABLE_NEW_DTAGS (400)
1985 #define OPTION_ENABLE_NEW_DTAGS (OPTION_DISABLE_NEW_DTAGS + 1)
1986 #define OPTION_GROUP (OPTION_ENABLE_NEW_DTAGS + 1)
1987 #define OPTION_EH_FRAME_HDR (OPTION_GROUP + 1)
1988 #define OPTION_EXCLUDE_LIBS (OPTION_EH_FRAME_HDR + 1)
1989 #define OPTION_HASH_STYLE (OPTION_EXCLUDE_LIBS + 1)
1990 #define OPTION_BUILD_ID (OPTION_HASH_STYLE + 1)
1993 gld${EMULATION_NAME}_add_options
1994 (int ns, char **shortopts, int nl, struct option **longopts,
1995 int nrl ATTRIBUTE_UNUSED, struct option **really_longopts ATTRIBUTE_UNUSED)
1997 static const char xtra_short[] = "${PARSE_AND_LIST_SHORTOPTS}z:";
1998 static const struct option xtra_long[] = {
1999 {"build-id", optional_argument, NULL, OPTION_BUILD_ID},
2002 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2004 {"disable-new-dtags", no_argument, NULL, OPTION_DISABLE_NEW_DTAGS},
2005 {"enable-new-dtags", no_argument, NULL, OPTION_ENABLE_NEW_DTAGS},
2006 {"eh-frame-hdr", no_argument, NULL, OPTION_EH_FRAME_HDR},
2007 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
2008 {"hash-style", required_argument, NULL, OPTION_HASH_STYLE},
2009 {"Bgroup", no_argument, NULL, OPTION_GROUP},
2013 if test -n "$PARSE_AND_LIST_LONGOPTS" ; then
2015 $PARSE_AND_LIST_LONGOPTS
2020 {NULL, no_argument, NULL, 0}
2023 *shortopts = (char *) xrealloc (*shortopts, ns + sizeof (xtra_short));
2024 memcpy (*shortopts + ns, &xtra_short, sizeof (xtra_short));
2025 *longopts = (struct option *)
2026 xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
2027 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
2030 #define DEFAULT_BUILD_ID_STYLE "sha1"
2033 gld${EMULATION_NAME}_handle_option (int optc)
2040 case OPTION_BUILD_ID:
2041 if (link_info.emit_note_gnu_build_id != NULL)
2043 free (link_info.emit_note_gnu_build_id);
2044 link_info.emit_note_gnu_build_id = NULL;
2047 optarg = DEFAULT_BUILD_ID_STYLE;
2048 if (strcmp (optarg, "none"))
2049 link_info.emit_note_gnu_build_id = xstrdup (optarg);
2054 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2056 case OPTION_DISABLE_NEW_DTAGS:
2057 link_info.new_dtags = FALSE;
2060 case OPTION_ENABLE_NEW_DTAGS:
2061 link_info.new_dtags = TRUE;
2064 case OPTION_EH_FRAME_HDR:
2065 link_info.eh_frame_hdr = TRUE;
2069 link_info.flags_1 |= (bfd_vma) DF_1_GROUP;
2070 /* Groups must be self-contained. */
2071 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
2072 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
2075 case OPTION_EXCLUDE_LIBS:
2076 add_excluded_libs (optarg);
2079 case OPTION_HASH_STYLE:
2080 link_info.emit_hash = FALSE;
2081 link_info.emit_gnu_hash = FALSE;
2082 if (strcmp (optarg, "sysv") == 0)
2083 link_info.emit_hash = TRUE;
2084 else if (strcmp (optarg, "gnu") == 0)
2085 link_info.emit_gnu_hash = TRUE;
2086 else if (strcmp (optarg, "both") == 0)
2088 link_info.emit_hash = TRUE;
2089 link_info.emit_gnu_hash = TRUE;
2092 einfo (_("%P%F: invalid hash style \`%s'\n"), optarg);
2096 if (strcmp (optarg, "initfirst") == 0)
2097 link_info.flags_1 |= (bfd_vma) DF_1_INITFIRST;
2098 else if (strcmp (optarg, "interpose") == 0)
2099 link_info.flags_1 |= (bfd_vma) DF_1_INTERPOSE;
2100 else if (strcmp (optarg, "loadfltr") == 0)
2101 link_info.flags_1 |= (bfd_vma) DF_1_LOADFLTR;
2102 else if (strcmp (optarg, "nodefaultlib") == 0)
2103 link_info.flags_1 |= (bfd_vma) DF_1_NODEFLIB;
2104 else if (strcmp (optarg, "nodelete") == 0)
2105 link_info.flags_1 |= (bfd_vma) DF_1_NODELETE;
2106 else if (strcmp (optarg, "nodlopen") == 0)
2107 link_info.flags_1 |= (bfd_vma) DF_1_NOOPEN;
2108 else if (strcmp (optarg, "nodump") == 0)
2109 link_info.flags_1 |= (bfd_vma) DF_1_NODUMP;
2110 else if (strcmp (optarg, "now") == 0)
2112 link_info.flags |= (bfd_vma) DF_BIND_NOW;
2113 link_info.flags_1 |= (bfd_vma) DF_1_NOW;
2115 else if (strcmp (optarg, "lazy") == 0)
2117 link_info.flags &= ~(bfd_vma) DF_BIND_NOW;
2118 link_info.flags_1 &= ~(bfd_vma) DF_1_NOW;
2120 else if (strcmp (optarg, "origin") == 0)
2122 link_info.flags |= (bfd_vma) DF_ORIGIN;
2123 link_info.flags_1 |= (bfd_vma) DF_1_ORIGIN;
2125 else if (strcmp (optarg, "defs") == 0)
2126 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
2127 else if (strcmp (optarg, "muldefs") == 0)
2128 link_info.allow_multiple_definition = TRUE;
2129 else if (strcmp (optarg, "combreloc") == 0)
2130 link_info.combreloc = TRUE;
2131 else if (strcmp (optarg, "nocombreloc") == 0)
2132 link_info.combreloc = FALSE;
2133 else if (strcmp (optarg, "nocopyreloc") == 0)
2134 link_info.nocopyreloc = TRUE;
2135 else if (strcmp (optarg, "execstack") == 0)
2137 link_info.execstack = TRUE;
2138 link_info.noexecstack = FALSE;
2140 else if (strcmp (optarg, "noexecstack") == 0)
2142 link_info.noexecstack = TRUE;
2143 link_info.execstack = FALSE;
2147 if test -n "$COMMONPAGESIZE"; then
2149 else if (strcmp (optarg, "relro") == 0)
2150 link_info.relro = TRUE;
2151 else if (strcmp (optarg, "norelro") == 0)
2152 link_info.relro = FALSE;
2157 else if (CONST_STRNEQ (optarg, "max-page-size="))
2161 config.maxpagesize = strtoul (optarg + 14, &end, 0);
2162 if (*end || (config.maxpagesize & (config.maxpagesize - 1)) != 0)
2163 einfo (_("%P%F: invalid maxium page size \`%s'\n"),
2165 ASSERT (default_target != NULL);
2166 bfd_emul_set_maxpagesize (default_target, config.maxpagesize);
2168 else if (CONST_STRNEQ (optarg, "common-page-size="))
2171 config.commonpagesize = strtoul (optarg + 17, &end, 0);
2173 || (config.commonpagesize & (config.commonpagesize - 1)) != 0)
2174 einfo (_("%P%F: invalid common page size \`%s'\n"),
2176 ASSERT (default_target != NULL);
2177 bfd_emul_set_commonpagesize (default_target,
2178 config.commonpagesize);
2180 /* What about the other Solaris -z options? FIXME. */
2185 if test -n "$PARSE_AND_LIST_ARGS_CASES" ; then
2187 $PARSE_AND_LIST_ARGS_CASES
2199 if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
2203 gld${EMULATION_NAME}_list_options (FILE * file)
2206 --build-id[=STYLE] Generate build ID note\n"));
2209 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2212 -Bgroup Selects group name lookup rules for DSO\n"));
2214 --disable-new-dtags Disable new dynamic tags\n"));
2216 --enable-new-dtags Enable new dynamic tags\n"));
2218 --eh-frame-hdr Create .eh_frame_hdr section\n"));
2220 --hash-style=STYLE Set hash style to sysv, gnu or both\n"));
2222 -z combreloc Merge dynamic relocs into one section and sort\n"));
2224 -z defs Report unresolved symbols in object files.\n"));
2226 -z execstack Mark executable as requiring executable stack\n"));
2228 -z initfirst Mark DSO to be initialized first at runtime\n"));
2230 -z interpose Mark object to interpose all DSOs but executable\n"));
2232 -z lazy Mark object lazy runtime binding (default)\n"));
2234 -z loadfltr Mark object requiring immediate process\n"));
2236 -z muldefs Allow multiple definitions\n"));
2238 -z nocombreloc Don't merge dynamic relocs into one section\n"));
2240 -z nocopyreloc Don't create copy relocs\n"));
2242 -z nodefaultlib Mark object not to use default search paths\n"));
2244 -z nodelete Mark DSO non-deletable at runtime\n"));
2246 -z nodlopen Mark DSO not available to dlopen\n"));
2248 -z nodump Mark DSO not available to dldump\n"));
2250 -z noexecstack Mark executable as not requiring executable stack\n"));
2253 if test -n "$COMMONPAGESIZE"; then
2256 -z norelro Don't create RELRO program header\n"));
2262 -z now Mark object non-lazy runtime binding\n"));
2264 -z origin Mark object requiring immediate \$ORIGIN\n\
2265 processing at runtime\n"));
2268 if test -n "$COMMONPAGESIZE"; then
2271 -z relro Create RELRO program header\n"));
2277 -z max-page-size=SIZE Set maximum page size to SIZE\n"));
2279 -z common-page-size=SIZE Set common page size to SIZE\n"));
2281 -z KEYWORD Ignored for Solaris compatibility\n"));
2285 if test -n "$PARSE_AND_LIST_OPTIONS" ; then
2287 $PARSE_AND_LIST_OPTIONS
2295 if test -n "$PARSE_AND_LIST_EPILOGUE" ; then
2297 $PARSE_AND_LIST_EPILOGUE
2303 #define gld${EMULATION_NAME}_add_options NULL
2304 #define gld${EMULATION_NAME}_handle_option NULL
2306 if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
2308 #define gld${EMULATION_NAME}_list_options NULL
2315 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
2317 ${LDEMUL_BEFORE_PARSE-gld${EMULATION_NAME}_before_parse},
2318 ${LDEMUL_SYSLIB-syslib_default},
2319 ${LDEMUL_HLL-hll_default},
2320 ${LDEMUL_AFTER_PARSE-after_parse_default},
2321 ${LDEMUL_AFTER_OPEN-gld${EMULATION_NAME}_after_open},
2322 ${LDEMUL_AFTER_ALLOCATION-after_allocation_default},
2323 ${LDEMUL_SET_OUTPUT_ARCH-set_output_arch_default},
2324 ${LDEMUL_CHOOSE_TARGET-ldemul_default_target},
2325 ${LDEMUL_BEFORE_ALLOCATION-gld${EMULATION_NAME}_before_allocation},
2326 ${LDEMUL_GET_SCRIPT-gld${EMULATION_NAME}_get_script},
2327 "${EMULATION_NAME}",
2329 ${LDEMUL_FINISH-gld${EMULATION_NAME}_finish},
2330 ${LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS-NULL},
2331 ${LDEMUL_OPEN_DYNAMIC_ARCHIVE-gld${EMULATION_NAME}_open_dynamic_archive},
2332 ${LDEMUL_PLACE_ORPHAN-gld${EMULATION_NAME}_place_orphan},
2333 ${LDEMUL_SET_SYMBOLS-NULL},
2334 ${LDEMUL_PARSE_ARGS-NULL},
2335 gld${EMULATION_NAME}_add_options,
2336 gld${EMULATION_NAME}_handle_option,
2337 ${LDEMUL_UNRECOGNIZED_FILE-NULL},
2338 ${LDEMUL_LIST_OPTIONS-gld${EMULATION_NAME}_list_options},
2339 ${LDEMUL_RECOGNIZED_FILE-gld${EMULATION_NAME}_load_symbols},
2340 ${LDEMUL_FIND_POTENTIAL_LIBRARIES-NULL},
2341 ${LDEMUL_NEW_VERS_PATTERN-NULL}