1 # This shell script emits a C file. -*- C -*-
2 # It does some substitutions.
3 # This file is now misnamed, because it supports both 32 bit and 64 bit
5 test -z "${ELFSIZE}" && ELFSIZE=32
6 cat >e${EMULATION_NAME}.c <<EOF
7 /* This file is is generated by a shell script. DO NOT EDIT! */
9 /* ${ELFSIZE} bit ELF emulation code for ${EMULATION_NAME}
10 Copyright (C) 1991, 93, 94, 95, 96, 97, 98, 1999
11 Free Software Foundation, Inc.
12 Written by Steve Chamberlain <sac@cygnus.com>
13 ELF support by Ian Lance Taylor <ian@cygnus.com>
15 This file is part of GLD, the Gnu Linker.
17 This program is free software; you can redistribute it and/or modify
18 it under the terms of the GNU General Public License as published by
19 the Free Software Foundation; either version 2 of the License, or
20 (at your option) any later version.
22 This program is distributed in the hope that it will be useful,
23 but WITHOUT ANY WARRANTY; without even the implied warranty of
24 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
25 GNU General Public License for more details.
27 You should have received a copy of the GNU General Public License
28 along with this program; if not, write to the Free Software
29 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
31 #define TARGET_IS_${EMULATION_NAME}
49 static void gld${EMULATION_NAME}_before_parse PARAMS ((void));
50 static boolean gld${EMULATION_NAME}_open_dynamic_archive
51 PARAMS ((const char *, search_dirs_type *, lang_input_statement_type *));
52 static void gld${EMULATION_NAME}_after_open PARAMS ((void));
53 static void gld${EMULATION_NAME}_check_needed
54 PARAMS ((lang_input_statement_type *));
55 static void gld${EMULATION_NAME}_stat_needed
56 PARAMS ((lang_input_statement_type *));
57 static boolean gld${EMULATION_NAME}_search_needed
58 PARAMS ((const char *, const char *, int));
59 static boolean gld${EMULATION_NAME}_try_needed PARAMS ((const char *, int));
60 static void gld${EMULATION_NAME}_vercheck
61 PARAMS ((lang_input_statement_type *));
62 static void gld${EMULATION_NAME}_before_allocation PARAMS ((void));
63 static void gld${EMULATION_NAME}_find_statement_assignment
64 PARAMS ((lang_statement_union_type *));
65 static void gld${EMULATION_NAME}_find_exp_assignment PARAMS ((etree_type *));
66 static boolean gld${EMULATION_NAME}_place_orphan
67 PARAMS ((lang_input_statement_type *, asection *));
68 static void gld${EMULATION_NAME}_place_section
69 PARAMS ((lang_statement_union_type *));
70 static char *gld${EMULATION_NAME}_get_script PARAMS ((int *isfile));
73 gld${EMULATION_NAME}_before_parse()
75 ldfile_output_architecture = bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`;
76 config.dynamic_link = ${DYNAMIC_LINK-true};
77 config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo true ; else echo false ; fi`;
80 /* Try to open a dynamic archive. This is where we know that ELF
81 dynamic libraries have an extension of .so (or .sl on oddball systems
85 gld${EMULATION_NAME}_open_dynamic_archive (arch, search, entry)
87 search_dirs_type *search;
88 lang_input_statement_type *entry;
93 if (! entry->is_archive)
96 filename = entry->filename;
98 /* This allocates a few bytes too many when EXTRA_SHLIB_EXTENSION
99 is defined, but it does not seem worth the headache to optimize
100 away those two bytes of space. */
101 string = (char *) xmalloc (strlen (search->name)
104 #ifdef EXTRA_SHLIB_EXTENSION
105 + strlen (EXTRA_SHLIB_EXTENSION)
109 sprintf (string, "%s/lib%s%s.so", search->name, filename, arch);
111 #ifdef EXTRA_SHLIB_EXTENSION
112 /* Try the .so extension first. If that fails build a new filename
113 using EXTRA_SHLIB_EXTENSION. */
114 if (! ldfile_try_open_bfd (string, entry))
115 sprintf (string, "%s/lib%s%s%s", search->name,
116 filename, arch, EXTRA_SHLIB_EXTENSION);
119 if (! ldfile_try_open_bfd (string, entry))
125 entry->filename = string;
127 /* We have found a dynamic object to include in the link. The ELF
128 backend linker will create a DT_NEEDED entry in the .dynamic
129 section naming this file. If this file includes a DT_SONAME
130 entry, it will be used. Otherwise, the ELF linker will just use
131 the name of the file. For an archive found by searching, like
132 this one, the DT_NEEDED entry should consist of just the name of
133 the file, without the path information used to find it. Note
134 that we only need to do this if we have a dynamic object; an
135 archive will never be referenced by a DT_NEEDED entry.
137 FIXME: This approach--using bfd_elf_set_dt_needed_name--is not
138 very pretty. I haven't been able to think of anything that is
140 if (bfd_check_format (entry->the_bfd, bfd_object)
141 && (entry->the_bfd->flags & DYNAMIC) != 0)
145 ASSERT (entry->is_archive && entry->search_dirs_flag);
147 /* Rather than duplicating the logic above. Just use the
148 filename we recorded earlier.
150 First strip off everything before the last '/'. */
151 filename = strrchr (entry->filename, '/');
154 needed_name = (char *) xmalloc (strlen (filename) + 1);
155 strcpy (needed_name, filename);
156 bfd_elf_set_dt_needed_name (entry->the_bfd, needed_name);
163 if [ "x${host}" = "x${target}" ] ; then
164 case " ${EMULATION_LIBPATH} " in
165 *" ${EMULATION_NAME} "*)
166 cat >>e${EMULATION_NAME}.c <<EOF
168 /* For a native linker, check the file /etc/ld.so.conf for directories
169 in which we may find shared libraries. /etc/ld.so.conf is really
170 only meaningful on Linux, but we check it on other systems anyhow. */
172 static boolean gld${EMULATION_NAME}_check_ld_so_conf
173 PARAMS ((const char *, int));
176 gld${EMULATION_NAME}_check_ld_so_conf (name, force)
180 static boolean initialized;
181 static char *ld_so_conf;
187 f = fopen ("/etc/ld.so.conf", FOPEN_RT);
196 b = (char *) xmalloc (alloc);
198 while ((c = getc (f)) != EOF)
200 if (len + 1 >= alloc)
203 b = (char *) xrealloc (b, alloc);
216 if (len > 0 && b[len - 1] != ':')
224 if (len > 0 && b[len - 1] == ':')
243 if (ld_so_conf == NULL)
246 return gld${EMULATION_NAME}_search_needed (ld_so_conf, name, force);
253 cat >>e${EMULATION_NAME}.c <<EOF
255 /* These variables are required to pass information back and forth
256 between after_open and check_needed and stat_needed and vercheck. */
258 static struct bfd_link_needed_list *global_needed;
259 static struct stat global_stat;
260 static boolean global_found;
261 static struct bfd_link_needed_list *global_vercheck_needed;
262 static boolean global_vercheck_failed;
264 /* This is called after all the input files have been opened. */
267 gld${EMULATION_NAME}_after_open ()
269 struct bfd_link_needed_list *needed, *l;
271 /* We only need to worry about this when doing a final link. */
272 if (link_info.relocateable || link_info.shared)
275 /* Get the list of files which appear in DT_NEEDED entries in
276 dynamic objects included in the link (often there will be none).
277 For each such file, we want to track down the corresponding
278 library, and include the symbol table in the link. This is what
279 the runtime dynamic linker will do. Tracking the files down here
280 permits one dynamic object to include another without requiring
281 special action by the person doing the link. Note that the
282 needed list can actually grow while we are stepping through this
284 needed = bfd_elf_get_needed_list (output_bfd, &link_info);
285 for (l = needed; l != NULL; l = l->next)
287 struct bfd_link_needed_list *ll;
290 /* If we've already seen this file, skip it. */
291 for (ll = needed; ll != l; ll = ll->next)
292 if (strcmp (ll->name, l->name) == 0)
297 /* See if this file was included in the link explicitly. */
299 global_found = false;
300 lang_for_each_input_file (gld${EMULATION_NAME}_check_needed);
304 /* We need to find this file and include the symbol table. We
305 want to search for the file in the same way that the dynamic
306 linker will search. That means that we want to use
307 rpath_link, rpath, then the environment variable
308 LD_LIBRARY_PATH (native only), then the linker script
309 LIB_SEARCH_DIRS. We do not search using the -L arguments.
311 We search twice. The first time, we skip objects which may
312 introduce version mismatches. The second time, we force
313 their use. See gld${EMULATION_NAME}_vercheck comment. */
314 for (force = 0; force < 2; force++)
316 const char *lib_path;
318 search_dirs_type *search;
320 if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link,
323 if (gld${EMULATION_NAME}_search_needed (command_line.rpath,
326 if (command_line.rpath_link == NULL
327 && command_line.rpath == NULL)
329 lib_path = (const char *) getenv ("LD_RUN_PATH");
330 if (gld${EMULATION_NAME}_search_needed (lib_path, l->name,
335 if [ "x${host}" = "x${target}" ] ; then
336 case " ${EMULATION_LIBPATH} " in
337 *" ${EMULATION_NAME} "*)
338 cat >>e${EMULATION_NAME}.c <<EOF
339 lib_path = (const char *) getenv ("LD_LIBRARY_PATH");
340 if (gld${EMULATION_NAME}_search_needed (lib_path, l->name, force))
346 cat >>e${EMULATION_NAME}.c <<EOF
347 len = strlen (l->name);
348 for (search = search_head; search != NULL; search = search->next)
354 filename = (char *) xmalloc (strlen (search->name) + len + 2);
355 sprintf (filename, "%s/%s", search->name, l->name);
356 if (gld${EMULATION_NAME}_try_needed (filename, force))
363 if [ "x${host}" = "x${target}" ] ; then
364 case " ${EMULATION_LIBPATH} " in
365 *" ${EMULATION_NAME} "*)
366 cat >>e${EMULATION_NAME}.c <<EOF
367 if (gld${EMULATION_NAME}_check_ld_so_conf (l->name, force))
373 cat >>e${EMULATION_NAME}.c <<EOF
379 einfo ("%P: warning: %s, needed by %B, not found (try using --rpath)\n",
384 /* Search for a needed file in a path. */
387 gld${EMULATION_NAME}_search_needed (path, name, force)
395 if (path == NULL || *path == '\0')
400 char *filename, *sset;
402 s = strchr (path, ':');
404 s = path + strlen (path);
406 filename = (char *) xmalloc (s - path + len + 2);
411 memcpy (filename, path, s - path);
412 filename[s - path] = '/';
413 sset = filename + (s - path) + 1;
417 if (gld${EMULATION_NAME}_try_needed (filename, force))
430 /* This function is called for each possible name for a dynamic object
431 named by a DT_NEEDED entry. The FORCE parameter indicates whether
432 to skip the check for a conflicting version. */
435 gld${EMULATION_NAME}_try_needed (name, force)
441 abfd = bfd_openr (name, bfd_get_target (output_bfd));
444 if (! bfd_check_format (abfd, bfd_object))
446 (void) bfd_close (abfd);
449 if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0)
451 (void) bfd_close (abfd);
455 /* Check whether this object would include any conflicting library
456 versions. If FORCE is set, then we skip this check; we use this
457 the second time around, if we couldn't find any compatible
458 instance of the shared library. */
462 struct bfd_link_needed_list *needed;
464 if (! bfd_elf_get_bfd_needed_list (abfd, &needed))
465 einfo ("%F%P:%B: bfd_elf_get_bfd_needed_list failed: %E\n", abfd);
469 global_vercheck_needed = needed;
470 global_vercheck_failed = false;
471 lang_for_each_input_file (gld${EMULATION_NAME}_vercheck);
472 if (global_vercheck_failed)
474 (void) bfd_close (abfd);
475 /* Return false to force the caller to move on to try
476 another file on the search path. */
480 /* But wait! It gets much worse. On Linux, if a shared
481 library does not use libc at all, we are supposed to skip
482 it the first time around in case we encounter a shared
483 library later on with the same name which does use the
484 version of libc that we want. This is much too horrible
485 to use on any system other than Linux. */
490 cat >>e${EMULATION_NAME}.c <<EOF
492 struct bfd_link_needed_list *l;
494 for (l = needed; l != NULL; l = l->next)
495 if (strncmp (l->name, "libc.so", 7) == 0)
499 (void) bfd_close (abfd);
507 cat >>e${EMULATION_NAME}.c <<EOF
511 /* We've found a dynamic object matching the DT_NEEDED entry. */
513 /* We have already checked that there is no other input file of the
514 same name. We must now check again that we are not including the
515 same file twice. We need to do this because on many systems
516 libc.so is a symlink to, e.g., libc.so.1. The SONAME entry will
517 reference libc.so.1. If we have already included libc.so, we
518 don't want to include libc.so.1 if they are the same file, and we
519 can only check that using stat. */
521 if (bfd_stat (abfd, &global_stat) != 0)
522 einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd);
523 global_found = false;
524 lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed);
527 /* Return true to indicate that we found the file, even though
528 we aren't going to do anything with it. */
532 /* Tell the ELF backend that don't want the output file to have a
533 DT_NEEDED entry for this file. */
534 bfd_elf_set_dt_needed_name (abfd, "");
536 /* Add this file into the symbol table. */
537 if (! bfd_link_add_symbols (abfd, &link_info))
538 einfo ("%F%B: could not read symbols: %E\n", abfd);
543 /* See if an input file matches a DT_NEEDED entry by name. */
546 gld${EMULATION_NAME}_check_needed (s)
547 lang_input_statement_type *s;
552 if (s->filename != NULL
553 && strcmp (s->filename, global_needed->name) == 0)
559 if (s->the_bfd != NULL)
563 soname = bfd_elf_get_dt_soname (s->the_bfd);
565 && strcmp (soname, global_needed->name) == 0)
572 if (s->search_dirs_flag
573 && s->filename != NULL
574 && strchr (global_needed->name, '/') == NULL)
578 f = strrchr (s->filename, '/');
580 && strcmp (f + 1, global_needed->name) == 0)
588 /* See if an input file matches a DT_NEEDED entry by running stat on
592 gld${EMULATION_NAME}_stat_needed (s)
593 lang_input_statement_type *s;
602 if (s->the_bfd == NULL)
605 if (bfd_stat (s->the_bfd, &st) != 0)
607 einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd);
611 if (st.st_dev == global_stat.st_dev
612 && st.st_ino == global_stat.st_ino)
618 /* We issue a warning if it looks like we are including two
619 different versions of the same shared library. For example,
620 there may be a problem if -lc picks up libc.so.6 but some other
621 shared library has a DT_NEEDED entry of libc.so.5. This is a
622 hueristic test, and it will only work if the name looks like
623 NAME.so.VERSION. FIXME: Depending on file names is error-prone.
624 If we really want to issue warnings about mixing version numbers
625 of shared libraries, we need to find a better way. */
627 if (strchr (global_needed->name, '/') != NULL)
629 suffix = strstr (global_needed->name, ".so.");
632 suffix += sizeof ".so." - 1;
634 soname = bfd_elf_get_dt_soname (s->the_bfd);
636 soname = s->filename;
638 f = strrchr (soname, '/');
644 if (strncmp (f, global_needed->name, suffix - global_needed->name) == 0)
645 einfo ("%P: warning: %s, needed by %B, may conflict with %s\n",
646 global_needed->name, global_needed->by, f);
649 /* On Linux, it's possible to have different versions of the same
650 shared library linked against different versions of libc. The
651 dynamic linker somehow tags which libc version to use in
652 /etc/ld.so.cache, and, based on the libc that it sees in the
653 executable, chooses which version of the shared library to use.
655 We try to do a similar check here by checking whether this shared
656 library needs any other shared libraries which may conflict with
657 libraries we have already included in the link. If it does, we
658 skip it, and try to find another shared library farther on down the
661 This is called via lang_for_each_input_file.
662 GLOBAL_VERCHECK_NEEDED is the list of objects needed by the object
663 which we ar checking. This sets GLOBAL_VERCHECK_FAILED if we find
664 a conflicting version. */
667 gld${EMULATION_NAME}_vercheck (s)
668 lang_input_statement_type *s;
670 const char *soname, *f;
671 struct bfd_link_needed_list *l;
673 if (global_vercheck_failed)
675 if (s->the_bfd == NULL
676 || (bfd_get_file_flags (s->the_bfd) & DYNAMIC) == 0)
679 soname = bfd_elf_get_dt_soname (s->the_bfd);
681 soname = bfd_get_filename (s->the_bfd);
683 f = strrchr (soname, '/');
689 for (l = global_vercheck_needed; l != NULL; l = l->next)
693 if (strcmp (f, l->name) == 0)
695 /* Probably can't happen, but it's an easy check. */
699 if (strchr (l->name, '/') != NULL)
702 suffix = strstr (l->name, ".so.");
706 suffix += sizeof ".so." - 1;
708 if (strncmp (f, l->name, suffix - l->name) == 0)
710 /* Here we know that S is a dynamic object FOO.SO.VER1, and
711 the object we are considering needs a dynamic object
712 FOO.SO.VER2, and VER1 and VER2 are different. This
713 appears to be a version mismatch, so we tell the caller
714 to try a different version of this library. */
715 global_vercheck_failed = true;
721 /* This is called after the sections have been attached to output
722 sections, but before any sizes or addresses have been set. */
725 gld${EMULATION_NAME}_before_allocation ()
730 /* If we are going to make any variable assignments, we need to let
731 the ELF backend know about them in case the variables are
732 referred to by dynamic objects. */
733 lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment);
735 /* Let the ELF backend work out the sizes of any sections required
736 by dynamic linking. */
737 rpath = command_line.rpath;
739 rpath = (const char *) getenv ("LD_RUN_PATH");
740 if (! (bfd_elf${ELFSIZE}_size_dynamic_sections
741 (output_bfd, command_line.soname, rpath,
742 command_line.export_dynamic, command_line.filter_shlib,
743 (const char * const *) command_line.auxiliary_filters,
744 &link_info, &sinterp, lang_elf_version_info)))
745 einfo ("%P%F: failed to set dynamic section sizes: %E\n");
747 /* Let the user override the dynamic linker we are using. */
748 if (command_line.interpreter != NULL
751 sinterp->contents = (bfd_byte *) command_line.interpreter;
752 sinterp->_raw_size = strlen (command_line.interpreter) + 1;
755 /* Look for any sections named .gnu.warning. As a GNU extensions,
756 we treat such sections as containing warning messages. We print
757 out the warning message, and then zero out the section size so
758 that it does not get copied into the output file. */
761 LANG_FOR_EACH_INPUT_STATEMENT (is)
768 if (is->just_syms_flag)
771 s = bfd_get_section_by_name (is->the_bfd, ".gnu.warning");
775 sz = bfd_section_size (is->the_bfd, s);
776 msg = xmalloc ((size_t) sz + 1);
777 if (! bfd_get_section_contents (is->the_bfd, s, msg, (file_ptr) 0, sz))
778 einfo ("%F%B: Can't read contents of section .gnu.warning: %E\n",
781 ret = link_info.callbacks->warning (&link_info, msg,
783 is->the_bfd, (asection *) NULL,
788 /* Clobber the section size, so that we don't waste copying the
789 warning into the output file. */
795 /* This is called by the before_allocation routine via
796 lang_for_each_statement. It locates any assignment statements, and
797 tells the ELF backend about them, in case they are assignments to
798 symbols which are referred to by dynamic objects. */
801 gld${EMULATION_NAME}_find_statement_assignment (s)
802 lang_statement_union_type *s;
804 if (s->header.type == lang_assignment_statement_enum)
805 gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp);
808 /* Look through an expression for an assignment statement. */
811 gld${EMULATION_NAME}_find_exp_assignment (exp)
814 struct bfd_link_hash_entry *h;
816 switch (exp->type.node_class)
819 h = bfd_link_hash_lookup (link_info.hash, exp->assign.dst,
820 false, false, false);
824 /* We call record_link_assignment even if the symbol is defined.
825 This is because if it is defined by a dynamic object, we
826 actually want to use the value defined by the linker script,
827 not the value from the dynamic object (because we are setting
828 symbols like etext). If the symbol is defined by a regular
829 object, then, as it happens, calling record_link_assignment
834 if (strcmp (exp->assign.dst, ".") != 0)
836 if (! (bfd_elf${ELFSIZE}_record_link_assignment
837 (output_bfd, &link_info, exp->assign.dst,
838 exp->type.node_class == etree_provide ? true : false)))
839 einfo ("%P%F: failed to record assignment to %s: %E\n",
842 gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src);
846 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs);
847 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs);
851 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond);
852 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs);
853 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs);
857 gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child);
865 /* Place an orphan section. We use this to put random SHF_ALLOC
866 sections in the right segment. */
868 static asection *hold_section;
869 static lang_output_section_statement_type *hold_use;
870 static lang_output_section_statement_type *hold_text;
871 static lang_output_section_statement_type *hold_rodata;
872 static lang_output_section_statement_type *hold_data;
873 static lang_output_section_statement_type *hold_bss;
874 static lang_output_section_statement_type *hold_rel;
875 static lang_output_section_statement_type *hold_interp;
879 gld${EMULATION_NAME}_place_orphan (file, s)
880 lang_input_statement_type *file;
883 lang_output_section_statement_type *place;
884 asection *snew, **pps;
885 lang_statement_list_type *old;
886 lang_statement_list_type add;
888 const char *secname, *ps;
889 const char *outsecname;
890 lang_output_section_statement_type *os;
892 if ((s->flags & SEC_ALLOC) == 0)
895 /* Look through the script to see where to place this section. */
898 lang_for_each_statement (gld${EMULATION_NAME}_place_section);
900 if (hold_use != NULL)
902 /* We have already placed a section with this name. */
903 wild_doit (&hold_use->children, s, hold_use, file);
907 secname = bfd_get_section_name (s->owner, s);
909 /* If this is a final link, then always put .gnu.warning.SYMBOL
910 sections into the .text section to get them out of the way. */
911 if (! link_info.shared
912 && ! link_info.relocateable
913 && strncmp (secname, ".gnu.warning.", sizeof ".gnu.warning." - 1) == 0
914 && hold_text != NULL)
916 wild_doit (&hold_text->children, s, hold_text, file);
920 /* Decide which segment the section should go in based on the
921 section name and section flags. We put loadable .note sections
922 right after the .interp section, so that the PT_NOTE segment is
923 stored right after the program headers where the OS can read it
924 in the first page. */
926 if (s->flags & SEC_EXCLUDE)
928 else if ((s->flags & SEC_LOAD) != 0
929 && strncmp (secname, ".note", 4) == 0
930 && hold_interp != NULL)
932 else if ((s->flags & SEC_HAS_CONTENTS) == 0
935 else if ((s->flags & SEC_READONLY) == 0
936 && hold_data != NULL)
938 else if (strncmp (secname, ".rel", 4) == 0
941 else if ((s->flags & SEC_CODE) == 0
942 && (s->flags & SEC_READONLY) != 0
943 && hold_rodata != NULL)
945 else if ((s->flags & SEC_READONLY) != 0
946 && hold_text != NULL)
951 /* Choose a unique name for the section. This will be needed if the
952 same section name appears in the input file with different
953 loadable or allocateable characteristics. */
954 outsecname = secname;
955 if (bfd_get_section_by_name (output_bfd, outsecname) != NULL)
961 len = strlen (outsecname);
962 newname = xmalloc (len + 5);
963 strcpy (newname, outsecname);
967 sprintf (newname + len, "%d", i);
970 while (bfd_get_section_by_name (output_bfd, newname) != NULL);
972 outsecname = newname;
975 /* Create the section in the output file, and put it in the right
976 place. This shuffling is to make the output file look neater. */
977 snew = bfd_make_section (output_bfd, outsecname);
979 einfo ("%P%F: output format %s cannot represent section called %s\n",
980 output_bfd->xvec->name, outsecname);
981 if (place->bfd_section != NULL)
983 for (pps = &output_bfd->sections; *pps != snew; pps = &(*pps)->next)
986 snew->next = place->bfd_section->next;
987 place->bfd_section->next = snew;
990 /* Start building a list of statements for this section. */
993 lang_list_init (stat_ptr);
995 /* If the name of the section is representable in C, then create
996 symbols to mark the start and the end of the section. */
997 for (ps = outsecname; *ps != '\0'; ps++)
998 if (! isalnum ((unsigned char) *ps) && *ps != '_')
1000 if (*ps == '\0' && config.build_constructors)
1004 symname = (char *) xmalloc (ps - outsecname + sizeof "__start_");
1005 sprintf (symname, "__start_%s", outsecname);
1006 lang_add_assignment (exp_assop ('=', symname,
1008 exp_intop ((bfd_vma) 1
1009 << s->alignment_power))));
1012 if (! link_info.relocateable)
1015 address = exp_intop ((bfd_vma) 0);
1017 lang_enter_output_section_statement (outsecname, address, 0,
1019 (etree_type *) NULL,
1020 (etree_type *) NULL,
1021 (etree_type *) NULL);
1023 os = lang_output_section_statement_lookup (outsecname);
1024 wild_doit (&os->children, s, os, file);
1026 lang_leave_output_section_statement
1027 ((bfd_vma) 0, "*default*", (struct lang_output_section_phdr_list *) NULL,
1031 if (*ps == '\0' && config.build_constructors)
1035 symname = (char *) xmalloc (ps - outsecname + sizeof "__stop_");
1036 sprintf (symname, "__stop_%s", outsecname);
1037 lang_add_assignment (exp_assop ('=', symname,
1038 exp_nameop (NAME, ".")));
1041 /* Now stick the new statement list right after PLACE. */
1042 *add.tail = place->header.next;
1043 place->header.next = add.head;
1051 gld${EMULATION_NAME}_place_section (s)
1052 lang_statement_union_type *s;
1054 lang_output_section_statement_type *os;
1056 if (s->header.type != lang_output_section_statement_enum)
1059 os = &s->output_section_statement;
1061 if (strcmp (os->name, hold_section->name) == 0
1062 && os->bfd_section != NULL
1063 && ((hold_section->flags & (SEC_LOAD | SEC_ALLOC))
1064 == (os->bfd_section->flags & (SEC_LOAD | SEC_ALLOC))))
1067 if (strcmp (os->name, ".text") == 0)
1069 else if (strcmp (os->name, ".rodata") == 0)
1071 else if (strcmp (os->name, ".data") == 0)
1073 else if (strcmp (os->name, ".bss") == 0)
1075 else if (hold_rel == NULL
1076 && os->bfd_section != NULL
1077 && (os->bfd_section->flags & SEC_ALLOC) != 0
1078 && strncmp (os->name, ".rel", 4) == 0)
1080 else if (strcmp (os->name, ".interp") == 0)
1085 gld${EMULATION_NAME}_get_script(isfile)
1089 if test -n "$COMPILE_IN"
1091 # Scripts compiled in.
1093 # sed commands to quote an ld script as a C string.
1094 sc="-f stringify.sed"
1096 cat >>e${EMULATION_NAME}.c <<EOF
1100 if (link_info.relocateable == true && config.build_constructors == true)
1103 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1104 echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c
1105 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
1106 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
1107 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
1108 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
1109 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
1111 if test -n "$GENERATE_SHLIB_SCRIPT" ; then
1112 echo ' ; else if (link_info.shared) return' >> e${EMULATION_NAME}.c
1113 sed $sc ldscripts/${EMULATION_NAME}.xs >> e${EMULATION_NAME}.c
1116 echo ' ; else return' >> e${EMULATION_NAME}.c
1117 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
1118 echo '; }' >> e${EMULATION_NAME}.c
1121 # Scripts read from the filesystem.
1123 cat >>e${EMULATION_NAME}.c <<EOF
1127 if (link_info.relocateable == true && config.build_constructors == true)
1128 return "ldscripts/${EMULATION_NAME}.xu";
1129 else if (link_info.relocateable == true)
1130 return "ldscripts/${EMULATION_NAME}.xr";
1131 else if (!config.text_read_only)
1132 return "ldscripts/${EMULATION_NAME}.xbn";
1133 else if (!config.magic_demand_paged)
1134 return "ldscripts/${EMULATION_NAME}.xn";
1135 else if (link_info.shared)
1136 return "ldscripts/${EMULATION_NAME}.xs";
1138 return "ldscripts/${EMULATION_NAME}.x";
1144 if test -n "$PARSE_AND_LIST_ARGS" ; then
1145 cat >>e${EMULATION_NAME}.c <<EOF
1146 static int gld_${EMULATION_NAME}_parse_args PARAMS ((int, char **));
1147 static void gld_${EMULATION_NAME}_list_options PARAMS ((FILE * file));
1149 $PARSE_AND_LIST_ARGS
1153 cat >>e${EMULATION_NAME}.c <<EOF
1154 #define gld_${EMULATION_NAME}_parse_args NULL
1155 #define gld_${EMULATION_NAME}_list_options NULL
1160 cat >>e${EMULATION_NAME}.c <<EOF
1162 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
1164 gld${EMULATION_NAME}_before_parse,
1167 after_parse_default,
1168 gld${EMULATION_NAME}_after_open,
1169 after_allocation_default,
1170 set_output_arch_default,
1171 ldemul_default_target,
1172 gld${EMULATION_NAME}_before_allocation,
1173 gld${EMULATION_NAME}_get_script,
1174 "${EMULATION_NAME}",
1177 NULL, /* create output section statements */
1178 gld${EMULATION_NAME}_open_dynamic_archive,
1179 gld${EMULATION_NAME}_place_orphan,
1180 NULL, /* set_symbols */
1181 gld_${EMULATION_NAME}_parse_args,
1182 NULL, /* unrecognized_file */
1183 gld_${EMULATION_NAME}_list_options,
1184 NULL /* recognized_file */