ChangeLog rotatation and copyright year update
[deliverable/binutils-gdb.git] / ld / emultempl / elf32.em
... / ...
CommitLineData
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
4# ELF emulations.
5test -z "${ELFSIZE}" && ELFSIZE=32
6if [ -z "$MACHINE" ]; then
7 OUTPUT_ARCH=${ARCH}
8else
9 OUTPUT_ARCH=${ARCH}:${MACHINE}
10fi
11fragment <<EOF
12/* This file is is generated by a shell script. DO NOT EDIT! */
13
14/* ${ELFSIZE} bit ELF emulation code for ${EMULATION_NAME}
15 Copyright (C) 1991-2015 Free Software Foundation, Inc.
16 Written by Steve Chamberlain <sac@cygnus.com>
17 ELF support by Ian Lance Taylor <ian@cygnus.com>
18
19 This file is part of the GNU Binutils.
20
21 This program is free software; you can redistribute it and/or modify
22 it under the terms of the GNU General Public License as published by
23 the Free Software Foundation; either version 3 of the License, or
24 (at your option) any later version.
25
26 This program is distributed in the hope that it will be useful,
27 but WITHOUT ANY WARRANTY; without even the implied warranty of
28 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
29 GNU General Public License for more details.
30
31 You should have received a copy of the GNU General Public License
32 along with this program; if not, write to the Free Software
33 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
34 MA 02110-1301, USA. */
35
36#define TARGET_IS_${EMULATION_NAME}
37
38#include "sysdep.h"
39#include "bfd.h"
40#include "libiberty.h"
41#include "safe-ctype.h"
42#include "filenames.h"
43#include "getopt.h"
44#include <fcntl.h>
45
46#include "bfdlink.h"
47
48#include "ld.h"
49#include "ldmain.h"
50#include "ldmisc.h"
51#include "ldexp.h"
52#include "ldlang.h"
53#include "ldfile.h"
54#include "ldemul.h"
55#include "ldbuildid.h"
56#include <ldgram.h>
57#include "elf/common.h"
58#include "elf-bfd.h"
59#include "filenames.h"
60
61/* Declare functions used by various EXTRA_EM_FILEs. */
62static void gld${EMULATION_NAME}_before_parse (void);
63static void gld${EMULATION_NAME}_after_open (void);
64static void gld${EMULATION_NAME}_before_allocation (void);
65static void gld${EMULATION_NAME}_after_allocation (void);
66static lang_output_section_statement_type *gld${EMULATION_NAME}_place_orphan
67 (asection *, const char *, int);
68EOF
69
70if [ "x${USE_LIBPATH}" = xyes ] ; then
71 case ${target} in
72 *-*-linux-* | *-*-k*bsd*-* | *-*-gnu*)
73 fragment <<EOF
74#ifdef HAVE_GLOB
75#include <glob.h>
76#endif
77EOF
78 ;;
79 esac
80fi
81
82# Import any needed special functions and/or overrides.
83#
84source_em ${srcdir}/emultempl/elf-generic.em
85if test -n "$EXTRA_EM_FILE" ; then
86 source_em ${srcdir}/emultempl/${EXTRA_EM_FILE}.em
87fi
88
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.
94#
95if test x"$LDEMUL_BEFORE_PARSE" != xgld"$EMULATION_NAME"_before_parse; then
96fragment <<EOF
97
98static void
99gld${EMULATION_NAME}_before_parse (void)
100{
101 ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
102 input_flags.dynamic = ${DYNAMIC_LINK-TRUE};
103 config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo TRUE ; else echo FALSE ; fi`;
104 config.separate_code = `if test "x${SEPARATE_CODE}" = xyes ; then echo TRUE ; else echo FALSE ; fi`;
105}
106
107EOF
108fi
109
110if test x"$LDEMUL_RECOGNIZED_FILE" != xgld"${EMULATION_NAME}"_load_symbols; then
111fragment <<EOF
112/* Handle the generation of DT_NEEDED tags. */
113
114static bfd_boolean
115gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *entry)
116{
117 int link_class = 0;
118
119 /* Tell the ELF linker that we don't want the output file to have a
120 DT_NEEDED entry for this file, unless it is used to resolve
121 references in a regular object. */
122 if (entry->flags.add_DT_NEEDED_for_regular)
123 link_class = DYN_AS_NEEDED;
124
125 /* Tell the ELF linker that we don't want the output file to have a
126 DT_NEEDED entry for any dynamic library in DT_NEEDED tags from
127 this file at all. */
128 if (!entry->flags.add_DT_NEEDED_for_dynamic)
129 link_class |= DYN_NO_ADD_NEEDED;
130
131 if (entry->flags.just_syms
132 && (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) != 0)
133 einfo (_("%P%F: --just-symbols may not be used on DSO: %B\n"),
134 entry->the_bfd);
135
136 if (link_class == 0
137 || (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) == 0)
138 return FALSE;
139
140 bfd_elf_set_dyn_lib_class (entry->the_bfd,
141 (enum dynamic_lib_link_class) link_class);
142
143 /* Continue on with normal load_symbols processing. */
144 return FALSE;
145}
146EOF
147fi
148
149fragment <<EOF
150
151/* These variables are required to pass information back and forth
152 between after_open and check_needed and stat_needed and vercheck. */
153
154static struct bfd_link_needed_list *global_needed;
155static struct stat global_stat;
156static lang_input_statement_type *global_found;
157static struct bfd_link_needed_list *global_vercheck_needed;
158static bfd_boolean global_vercheck_failed;
159
160/* These variables are used to implement target options */
161
162static char *audit; /* colon (typically) separated list of libs */
163static char *depaudit; /* colon (typically) separated list of libs */
164
165/* Style of .note.gnu.build-id section. */
166static const char *emit_note_gnu_build_id;
167
168/* On Linux, it's possible to have different versions of the same
169 shared library linked against different versions of libc. The
170 dynamic linker somehow tags which libc version to use in
171 /etc/ld.so.cache, and, based on the libc that it sees in the
172 executable, chooses which version of the shared library to use.
173
174 We try to do a similar check here by checking whether this shared
175 library needs any other shared libraries which may conflict with
176 libraries we have already included in the link. If it does, we
177 skip it, and try to find another shared library farther on down the
178 link path.
179
180 This is called via lang_for_each_input_file.
181 GLOBAL_VERCHECK_NEEDED is the list of objects needed by the object
182 which we are checking. This sets GLOBAL_VERCHECK_FAILED if we find
183 a conflicting version. */
184
185static void
186gld${EMULATION_NAME}_vercheck (lang_input_statement_type *s)
187{
188 const char *soname;
189 struct bfd_link_needed_list *l;
190
191 if (global_vercheck_failed)
192 return;
193 if (s->the_bfd == NULL
194 || (bfd_get_file_flags (s->the_bfd) & DYNAMIC) == 0)
195 return;
196
197 soname = bfd_elf_get_dt_soname (s->the_bfd);
198 if (soname == NULL)
199 soname = lbasename (bfd_get_filename (s->the_bfd));
200
201 for (l = global_vercheck_needed; l != NULL; l = l->next)
202 {
203 const char *suffix;
204
205 if (filename_cmp (soname, l->name) == 0)
206 {
207 /* Probably can't happen, but it's an easy check. */
208 continue;
209 }
210
211 if (strchr (l->name, '/') != NULL)
212 continue;
213
214 suffix = strstr (l->name, ".so.");
215 if (suffix == NULL)
216 continue;
217
218 suffix += sizeof ".so." - 1;
219
220 if (filename_ncmp (soname, l->name, suffix - l->name) == 0)
221 {
222 /* Here we know that S is a dynamic object FOO.SO.VER1, and
223 the object we are considering needs a dynamic object
224 FOO.SO.VER2, and VER1 and VER2 are different. This
225 appears to be a version mismatch, so we tell the caller
226 to try a different version of this library. */
227 global_vercheck_failed = TRUE;
228 return;
229 }
230 }
231}
232
233
234/* See if an input file matches a DT_NEEDED entry by running stat on
235 the file. */
236
237static void
238gld${EMULATION_NAME}_stat_needed (lang_input_statement_type *s)
239{
240 struct stat st;
241 const char *suffix;
242 const char *soname;
243
244 if (global_found != NULL)
245 return;
246 if (s->the_bfd == NULL)
247 return;
248
249 /* If this input file was an as-needed entry, and wasn't found to be
250 needed at the stage it was linked, then don't say we have loaded it. */
251 if ((bfd_elf_get_dyn_lib_class (s->the_bfd) & DYN_AS_NEEDED) != 0)
252 return;
253
254 if (bfd_stat (s->the_bfd, &st) != 0)
255 {
256 einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd);
257 return;
258 }
259
260 /* Some operating systems, e.g. Windows, do not provide a meaningful
261 st_ino; they always set it to zero. (Windows does provide a
262 meaningful st_dev.) Do not indicate a duplicate library in that
263 case. While there is no guarantee that a system that provides
264 meaningful inode numbers will never set st_ino to zero, this is
265 merely an optimization, so we do not need to worry about false
266 negatives. */
267 if (st.st_dev == global_stat.st_dev
268 && st.st_ino == global_stat.st_ino
269 && st.st_ino != 0)
270 {
271 global_found = s;
272 return;
273 }
274
275 /* We issue a warning if it looks like we are including two
276 different versions of the same shared library. For example,
277 there may be a problem if -lc picks up libc.so.6 but some other
278 shared library has a DT_NEEDED entry of libc.so.5. This is a
279 heuristic test, and it will only work if the name looks like
280 NAME.so.VERSION. FIXME: Depending on file names is error-prone.
281 If we really want to issue warnings about mixing version numbers
282 of shared libraries, we need to find a better way. */
283
284 if (strchr (global_needed->name, '/') != NULL)
285 return;
286 suffix = strstr (global_needed->name, ".so.");
287 if (suffix == NULL)
288 return;
289 suffix += sizeof ".so." - 1;
290
291 soname = bfd_elf_get_dt_soname (s->the_bfd);
292 if (soname == NULL)
293 soname = lbasename (s->filename);
294
295 if (filename_ncmp (soname, global_needed->name, suffix - global_needed->name) == 0)
296 einfo ("%P: warning: %s, needed by %B, may conflict with %s\n",
297 global_needed->name, global_needed->by, soname);
298}
299
300struct dt_needed
301{
302 bfd *by;
303 const char *name;
304};
305
306/* This function is called for each possible name for a dynamic object
307 named by a DT_NEEDED entry. The FORCE parameter indicates whether
308 to skip the check for a conflicting version. */
309
310static bfd_boolean
311gld${EMULATION_NAME}_try_needed (struct dt_needed *needed,
312 int force)
313{
314 bfd *abfd;
315 const char *name = needed->name;
316 const char *soname;
317 int link_class;
318
319 abfd = bfd_openr (name, bfd_get_target (link_info.output_bfd));
320 if (abfd == NULL)
321 return FALSE;
322
323 /* Linker needs to decompress sections. */
324 abfd->flags |= BFD_DECOMPRESS;
325
326 if (! bfd_check_format (abfd, bfd_object))
327 {
328 bfd_close (abfd);
329 return FALSE;
330 }
331 if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0)
332 {
333 bfd_close (abfd);
334 return FALSE;
335 }
336
337 /* For DT_NEEDED, they have to match. */
338 if (abfd->xvec != link_info.output_bfd->xvec)
339 {
340 bfd_close (abfd);
341 return FALSE;
342 }
343
344 /* Check whether this object would include any conflicting library
345 versions. If FORCE is set, then we skip this check; we use this
346 the second time around, if we couldn't find any compatible
347 instance of the shared library. */
348
349 if (! force)
350 {
351 struct bfd_link_needed_list *needs;
352
353 if (! bfd_elf_get_bfd_needed_list (abfd, &needs))
354 einfo ("%F%P:%B: bfd_elf_get_bfd_needed_list failed: %E\n", abfd);
355
356 if (needs != NULL)
357 {
358 global_vercheck_needed = needs;
359 global_vercheck_failed = FALSE;
360 lang_for_each_input_file (gld${EMULATION_NAME}_vercheck);
361 if (global_vercheck_failed)
362 {
363 bfd_close (abfd);
364 /* Return FALSE to force the caller to move on to try
365 another file on the search path. */
366 return FALSE;
367 }
368
369 /* But wait! It gets much worse. On Linux, if a shared
370 library does not use libc at all, we are supposed to skip
371 it the first time around in case we encounter a shared
372 library later on with the same name which does use the
373 version of libc that we want. This is much too horrible
374 to use on any system other than Linux. */
375
376EOF
377case ${target} in
378 *-*-linux-* | *-*-k*bsd*-* | *-*-gnu*)
379 fragment <<EOF
380 {
381 struct bfd_link_needed_list *l;
382
383 for (l = needs; l != NULL; l = l->next)
384 if (CONST_STRNEQ (l->name, "libc.so"))
385 break;
386 if (l == NULL)
387 {
388 bfd_close (abfd);
389 return FALSE;
390 }
391 }
392
393EOF
394 ;;
395esac
396fragment <<EOF
397 }
398 }
399
400 /* We've found a dynamic object matching the DT_NEEDED entry. */
401
402 /* We have already checked that there is no other input file of the
403 same name. We must now check again that we are not including the
404 same file twice. We need to do this because on many systems
405 libc.so is a symlink to, e.g., libc.so.1. The SONAME entry will
406 reference libc.so.1. If we have already included libc.so, we
407 don't want to include libc.so.1 if they are the same file, and we
408 can only check that using stat. */
409
410 if (bfd_stat (abfd, &global_stat) != 0)
411 einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd);
412
413 /* First strip off everything before the last '/'. */
414 soname = lbasename (abfd->filename);
415
416 if (verbose)
417 info_msg (_("found %s at %s\n"), soname, name);
418
419 global_found = NULL;
420 lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed);
421 if (global_found != NULL)
422 {
423 /* Return TRUE to indicate that we found the file, even though
424 we aren't going to do anything with it. */
425 return TRUE;
426 }
427
428 /* Specify the soname to use. */
429 bfd_elf_set_dt_needed_name (abfd, soname);
430
431 /* Tell the ELF linker that we don't want the output file to have a
432 DT_NEEDED entry for this file, unless it is used to resolve
433 references in a regular object. */
434 link_class = DYN_DT_NEEDED;
435
436 /* Tell the ELF linker that we don't want the output file to have a
437 DT_NEEDED entry for this file at all if the entry is from a file
438 with DYN_NO_ADD_NEEDED. */
439 if (needed->by != NULL
440 && (bfd_elf_get_dyn_lib_class (needed->by) & DYN_NO_ADD_NEEDED) != 0)
441 link_class |= DYN_NO_NEEDED | DYN_NO_ADD_NEEDED;
442
443 bfd_elf_set_dyn_lib_class (abfd, (enum dynamic_lib_link_class) link_class);
444
445 /* Add this file into the symbol table. */
446 if (! bfd_link_add_symbols (abfd, &link_info))
447 einfo ("%F%B: error adding symbols: %E\n", abfd);
448
449 return TRUE;
450}
451
452
453/* Search for a needed file in a path. */
454
455static bfd_boolean
456gld${EMULATION_NAME}_search_needed (const char *path,
457 struct dt_needed *n, int force)
458{
459 const char *s;
460 const char *name = n->name;
461 size_t len;
462 struct dt_needed needed;
463
464 if (name[0] == '/')
465 return gld${EMULATION_NAME}_try_needed (n, force);
466
467 if (path == NULL || *path == '\0')
468 return FALSE;
469
470 needed.by = n->by;
471 needed.name = n->name;
472
473 len = strlen (name);
474 while (1)
475 {
476 char *filename, *sset;
477
478 s = strchr (path, config.rpath_separator);
479 if (s == NULL)
480 s = path + strlen (path);
481
482#if HAVE_DOS_BASED_FILE_SYSTEM
483 /* Assume a match on the second char is part of drive specifier. */
484 else if (config.rpath_separator == ':'
485 && s == path + 1
486 && ISALPHA (*path))
487 {
488 s = strchr (s + 1, config.rpath_separator);
489 if (s == NULL)
490 s = path + strlen (path);
491 }
492#endif
493 filename = (char *) xmalloc (s - path + len + 2);
494 if (s == path)
495 sset = filename;
496 else
497 {
498 memcpy (filename, path, s - path);
499 filename[s - path] = '/';
500 sset = filename + (s - path) + 1;
501 }
502 strcpy (sset, name);
503
504 needed.name = filename;
505 if (gld${EMULATION_NAME}_try_needed (&needed, force))
506 return TRUE;
507
508 free (filename);
509
510 if (*s == '\0')
511 break;
512 path = s + 1;
513 }
514
515 return FALSE;
516}
517
518EOF
519if [ "x${USE_LIBPATH}" = xyes ] ; then
520 fragment <<EOF
521
522/* Add the sysroot to every entry in a path separated by
523 config.rpath_separator. */
524
525static char *
526gld${EMULATION_NAME}_add_sysroot (const char *path)
527{
528 int len, colons, i;
529 char *ret, *p;
530
531 len = strlen (path);
532 colons = 0;
533 i = 0;
534 while (path[i])
535 if (path[i++] == config.rpath_separator)
536 colons++;
537
538 if (path[i])
539 colons++;
540
541 len = len + (colons + 1) * strlen (ld_sysroot);
542 ret = xmalloc (len + 1);
543 strcpy (ret, ld_sysroot);
544 p = ret + strlen (ret);
545 i = 0;
546 while (path[i])
547 if (path[i] == config.rpath_separator)
548 {
549 *p++ = path[i++];
550 strcpy (p, ld_sysroot);
551 p = p + strlen (p);
552 }
553 else
554 *p++ = path[i++];
555
556 *p = 0;
557 return ret;
558}
559
560EOF
561 case ${target} in
562 *-*-freebsd* | *-*-dragonfly*)
563 fragment <<EOF
564/* Read the system search path the FreeBSD way rather than the Linux way. */
565#ifdef HAVE_ELF_HINTS_H
566#include <elf-hints.h>
567#else
568#include "elf-hints-local.h"
569#endif
570
571static bfd_boolean
572gld${EMULATION_NAME}_check_ld_elf_hints (const struct bfd_link_needed_list *l,
573 int force)
574{
575 static bfd_boolean initialized;
576 static char *ld_elf_hints;
577 struct dt_needed needed;
578
579 if (!initialized)
580 {
581 FILE *f;
582 char *tmppath;
583
584 tmppath = concat (ld_sysroot, _PATH_ELF_HINTS, (const char *) NULL);
585 f = fopen (tmppath, FOPEN_RB);
586 free (tmppath);
587 if (f != NULL)
588 {
589 struct elfhints_hdr hdr;
590
591 if (fread (&hdr, 1, sizeof (hdr), f) == sizeof (hdr)
592 && hdr.magic == ELFHINTS_MAGIC
593 && hdr.version == 1)
594 {
595 if (fseek (f, hdr.strtab + hdr.dirlist, SEEK_SET) != -1)
596 {
597 char *b;
598
599 b = xmalloc (hdr.dirlistlen + 1);
600 if (fread (b, 1, hdr.dirlistlen + 1, f) ==
601 hdr.dirlistlen + 1)
602 ld_elf_hints = gld${EMULATION_NAME}_add_sysroot (b);
603
604 free (b);
605 }
606 }
607 fclose (f);
608 }
609
610 initialized = TRUE;
611 }
612
613 if (ld_elf_hints == NULL)
614 return FALSE;
615
616 needed.by = l->by;
617 needed.name = l->name;
618 return gld${EMULATION_NAME}_search_needed (ld_elf_hints, &needed, force);
619}
620EOF
621 # FreeBSD
622 ;;
623
624 *-*-linux-* | *-*-k*bsd*-* | *-*-gnu*)
625 fragment <<EOF
626/* For a native linker, check the file /etc/ld.so.conf for directories
627 in which we may find shared libraries. /etc/ld.so.conf is really
628 only meaningful on Linux. */
629
630struct gld${EMULATION_NAME}_ld_so_conf
631{
632 char *path;
633 size_t len, alloc;
634};
635
636static bfd_boolean
637gld${EMULATION_NAME}_parse_ld_so_conf
638 (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename);
639
640static void
641gld${EMULATION_NAME}_parse_ld_so_conf_include
642 (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename,
643 const char *pattern)
644{
645 char *newp = NULL;
646#ifdef HAVE_GLOB
647 glob_t gl;
648#endif
649
650 if (pattern[0] != '/')
651 {
652 char *p = strrchr (filename, '/');
653 size_t patlen = strlen (pattern) + 1;
654
655 newp = xmalloc (p - filename + 1 + patlen);
656 memcpy (newp, filename, p - filename + 1);
657 memcpy (newp + (p - filename + 1), pattern, patlen);
658 pattern = newp;
659 }
660
661#ifdef HAVE_GLOB
662 if (glob (pattern, 0, NULL, &gl) == 0)
663 {
664 size_t i;
665
666 for (i = 0; i < gl.gl_pathc; ++i)
667 gld${EMULATION_NAME}_parse_ld_so_conf (info, gl.gl_pathv[i]);
668 globfree (&gl);
669 }
670#else
671 /* If we do not have glob, treat the pattern as a literal filename. */
672 gld${EMULATION_NAME}_parse_ld_so_conf (info, pattern);
673#endif
674
675 if (newp)
676 free (newp);
677}
678
679static bfd_boolean
680gld${EMULATION_NAME}_parse_ld_so_conf
681 (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename)
682{
683 FILE *f = fopen (filename, FOPEN_RT);
684 char *line;
685 size_t linelen;
686
687 if (f == NULL)
688 return FALSE;
689
690 linelen = 256;
691 line = xmalloc (linelen);
692 do
693 {
694 char *p = line, *q;
695
696 /* Normally this would use getline(3), but we need to be portable. */
697 while ((q = fgets (p, linelen - (p - line), f)) != NULL
698 && strlen (q) == linelen - (p - line) - 1
699 && line[linelen - 2] != '\n')
700 {
701 line = xrealloc (line, 2 * linelen);
702 p = line + linelen - 1;
703 linelen += linelen;
704 }
705
706 if (q == NULL && p == line)
707 break;
708
709 p = strchr (line, '\n');
710 if (p)
711 *p = '\0';
712
713 /* Because the file format does not know any form of quoting we
714 can search forward for the next '#' character and if found
715 make it terminating the line. */
716 p = strchr (line, '#');
717 if (p)
718 *p = '\0';
719
720 /* Remove leading whitespace. NUL is no whitespace character. */
721 p = line;
722 while (*p == ' ' || *p == '\f' || *p == '\r' || *p == '\t' || *p == '\v')
723 ++p;
724
725 /* If the line is blank it is ignored. */
726 if (p[0] == '\0')
727 continue;
728
729 if (CONST_STRNEQ (p, "include") && (p[7] == ' ' || p[7] == '\t'))
730 {
731 char *dir, c;
732 p += 8;
733 do
734 {
735 while (*p == ' ' || *p == '\t')
736 ++p;
737
738 if (*p == '\0')
739 break;
740
741 dir = p;
742
743 while (*p != ' ' && *p != '\t' && *p)
744 ++p;
745
746 c = *p;
747 *p++ = '\0';
748 if (dir[0] != '\0')
749 gld${EMULATION_NAME}_parse_ld_so_conf_include (info, filename,
750 dir);
751 }
752 while (c != '\0');
753 }
754 else
755 {
756 char *dir = p;
757 while (*p && *p != '=' && *p != ' ' && *p != '\t' && *p != '\f'
758 && *p != '\r' && *p != '\v')
759 ++p;
760
761 while (p != dir && p[-1] == '/')
762 --p;
763 if (info->path == NULL)
764 {
765 info->alloc = p - dir + 1 + 256;
766 info->path = xmalloc (info->alloc);
767 info->len = 0;
768 }
769 else
770 {
771 if (info->len + 1 + (p - dir) >= info->alloc)
772 {
773 info->alloc += p - dir + 256;
774 info->path = xrealloc (info->path, info->alloc);
775 }
776 info->path[info->len++] = config.rpath_separator;
777 }
778 memcpy (info->path + info->len, dir, p - dir);
779 info->len += p - dir;
780 info->path[info->len] = '\0';
781 }
782 }
783 while (! feof (f));
784 free (line);
785 fclose (f);
786 return TRUE;
787}
788
789static bfd_boolean
790gld${EMULATION_NAME}_check_ld_so_conf (const struct bfd_link_needed_list *l,
791 int force)
792{
793 static bfd_boolean initialized;
794 static char *ld_so_conf;
795 struct dt_needed needed;
796
797 if (! initialized)
798 {
799 char *tmppath;
800 struct gld${EMULATION_NAME}_ld_so_conf info;
801
802 info.path = NULL;
803 info.len = info.alloc = 0;
804 tmppath = concat (ld_sysroot, "${prefix}/etc/ld.so.conf",
805 (const char *) NULL);
806 if (!gld${EMULATION_NAME}_parse_ld_so_conf (&info, tmppath))
807 {
808 free (tmppath);
809 tmppath = concat (ld_sysroot, "/etc/ld.so.conf",
810 (const char *) NULL);
811 gld${EMULATION_NAME}_parse_ld_so_conf (&info, tmppath);
812 }
813 free (tmppath);
814
815 if (info.path)
816 {
817 char *d = gld${EMULATION_NAME}_add_sysroot (info.path);
818 free (info.path);
819 ld_so_conf = d;
820 }
821 initialized = TRUE;
822 }
823
824 if (ld_so_conf == NULL)
825 return FALSE;
826
827
828 needed.by = l->by;
829 needed.name = l->name;
830 return gld${EMULATION_NAME}_search_needed (ld_so_conf, &needed, force);
831}
832
833EOF
834 # Linux
835 ;;
836 esac
837fi
838fragment <<EOF
839
840/* See if an input file matches a DT_NEEDED entry by name. */
841
842static void
843gld${EMULATION_NAME}_check_needed (lang_input_statement_type *s)
844{
845 const char *soname;
846
847 /* Stop looking if we've found a loaded lib. */
848 if (global_found != NULL
849 && (bfd_elf_get_dyn_lib_class (global_found->the_bfd)
850 & DYN_AS_NEEDED) == 0)
851 return;
852
853 if (s->filename == NULL || s->the_bfd == NULL)
854 return;
855
856 /* Don't look for a second non-loaded as-needed lib. */
857 if (global_found != NULL
858 && (bfd_elf_get_dyn_lib_class (s->the_bfd) & DYN_AS_NEEDED) != 0)
859 return;
860
861 if (filename_cmp (s->filename, global_needed->name) == 0)
862 {
863 global_found = s;
864 return;
865 }
866
867 if (s->flags.search_dirs)
868 {
869 const char *f = strrchr (s->filename, '/');
870 if (f != NULL
871 && filename_cmp (f + 1, global_needed->name) == 0)
872 {
873 global_found = s;
874 return;
875 }
876 }
877
878 soname = bfd_elf_get_dt_soname (s->the_bfd);
879 if (soname != NULL
880 && filename_cmp (soname, global_needed->name) == 0)
881 {
882 global_found = s;
883 return;
884 }
885}
886
887EOF
888
889if test x"$LDEMUL_AFTER_OPEN" != xgld"$EMULATION_NAME"_after_open; then
890fragment <<EOF
891
892static bfd_size_type
893id_note_section_size (bfd *abfd ATTRIBUTE_UNUSED)
894{
895 const char *style = emit_note_gnu_build_id;
896 bfd_size_type size;
897 bfd_size_type build_id_size;
898
899 size = offsetof (Elf_External_Note, name[sizeof "GNU"]);
900 size = (size + 3) & -(bfd_size_type) 4;
901
902 build_id_size = compute_build_id_size (style);
903 if (build_id_size)
904 size += build_id_size;
905 else
906 size = 0;
907
908 return size;
909}
910
911static bfd_boolean
912write_build_id (bfd *abfd)
913{
914 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
915 struct elf_obj_tdata *t = elf_tdata (abfd);
916 const char *style;
917 asection *asec;
918 Elf_Internal_Shdr *i_shdr;
919 unsigned char *contents, *id_bits;
920 bfd_size_type size;
921 file_ptr position;
922 Elf_External_Note *e_note;
923
924 style = t->o->build_id.style;
925 asec = t->o->build_id.sec;
926 if (bfd_is_abs_section (asec->output_section))
927 {
928 einfo (_("%P: warning: .note.gnu.build-id section discarded,"
929 " --build-id ignored.\n"));
930 return TRUE;
931 }
932 i_shdr = &elf_section_data (asec->output_section)->this_hdr;
933
934 if (i_shdr->contents == NULL)
935 {
936 if (asec->contents == NULL)
937 asec->contents = (unsigned char *) xmalloc (asec->size);
938 contents = asec->contents;
939 }
940 else
941 contents = i_shdr->contents + asec->output_offset;
942
943 e_note = (Elf_External_Note *) contents;
944 size = offsetof (Elf_External_Note, name[sizeof "GNU"]);
945 size = (size + 3) & -(bfd_size_type) 4;
946 id_bits = contents + size;
947 size = asec->size - size;
948
949 bfd_h_put_32 (abfd, sizeof "GNU", &e_note->namesz);
950 bfd_h_put_32 (abfd, size, &e_note->descsz);
951 bfd_h_put_32 (abfd, NT_GNU_BUILD_ID, &e_note->type);
952 memcpy (e_note->name, "GNU", sizeof "GNU");
953
954 generate_build_id (abfd, style, bed->s->checksum_contents, id_bits, size);
955
956 position = i_shdr->sh_offset + asec->output_offset;
957 size = asec->size;
958 return (bfd_seek (abfd, position, SEEK_SET) == 0
959 && bfd_bwrite (contents, size, abfd) == size);
960}
961
962/* Make .note.gnu.build-id section, and set up elf_tdata->build_id. */
963
964static bfd_boolean
965setup_build_id (bfd *ibfd)
966{
967 asection *s;
968 bfd_size_type size;
969 flagword flags;
970
971 size = id_note_section_size (ibfd);
972 if (size == 0)
973 {
974 einfo ("%P: warning: unrecognized --build-id style ignored.\n");
975 return FALSE;
976 }
977
978 flags = (SEC_ALLOC | SEC_LOAD | SEC_IN_MEMORY
979 | SEC_LINKER_CREATED | SEC_READONLY | SEC_DATA);
980 s = bfd_make_section_with_flags (ibfd, ".note.gnu.build-id", flags);
981 if (s != NULL && bfd_set_section_alignment (ibfd, s, 2))
982 {
983 struct elf_obj_tdata *t = elf_tdata (link_info.output_bfd);
984 t->o->build_id.after_write_object_contents = &write_build_id;
985 t->o->build_id.style = emit_note_gnu_build_id;
986 t->o->build_id.sec = s;
987 elf_section_type (s) = SHT_NOTE;
988 s->size = size;
989 return TRUE;
990 }
991
992 einfo ("%P: warning: Cannot create .note.gnu.build-id section,"
993 " --build-id ignored.\n");
994 return FALSE;
995}
996
997/* This is called after all the input files have been opened. */
998
999static void
1000gld${EMULATION_NAME}_after_open (void)
1001{
1002 struct bfd_link_needed_list *needed, *l;
1003 struct elf_link_hash_table *htab;
1004
1005 after_open_default ();
1006
1007 htab = elf_hash_table (&link_info);
1008 if (!is_elf_hash_table (htab))
1009 return;
1010
1011 if (emit_note_gnu_build_id != NULL)
1012 {
1013 bfd *abfd;
1014
1015 /* Find an ELF input. */
1016 for (abfd = link_info.input_bfds;
1017 abfd != (bfd *) NULL; abfd = abfd->link.next)
1018 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
1019 && bfd_count_sections (abfd) != 0)
1020 break;
1021
1022 /* PR 10555: If there are no ELF input files do not try to
1023 create a .note.gnu-build-id section. */
1024 if (abfd == NULL
1025 || !setup_build_id (abfd))
1026 {
1027 free ((char *) emit_note_gnu_build_id);
1028 emit_note_gnu_build_id = NULL;
1029 }
1030 }
1031
1032 if (link_info.relocatable)
1033 {
1034 if (link_info.execstack == ! link_info.noexecstack)
1035 /* PR ld/16744: If "-z [no]execstack" has been specified on the
1036 command line and we are perfoming a relocatable link then no
1037 PT_GNU_STACK segment will be created and so the
1038 linkinfo.[no]execstack values set in _handle_option() will have no
1039 effect. Instead we create a .note.GNU-stack section in much the
1040 same way as the assembler does with its --[no]execstack option. */
1041 (void) bfd_make_section_with_flags (link_info.input_bfds,
1042 ".note.GNU-stack",
1043 SEC_READONLY | (link_info.execstack ? SEC_CODE : 0));
1044
1045 return;
1046 }
1047
1048 if (link_info.eh_frame_hdr
1049 && !link_info.traditional_format)
1050 {
1051 bfd *abfd, *elfbfd = NULL;
1052 bfd_boolean warn_eh_frame = FALSE;
1053 asection *s;
1054
1055 for (abfd = link_info.input_bfds; abfd; abfd = abfd->link.next)
1056 {
1057 if (bfd_count_sections (abfd) == 0)
1058 continue;
1059 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
1060 elfbfd = abfd;
1061 if (!warn_eh_frame)
1062 {
1063 s = bfd_get_section_by_name (abfd, ".eh_frame");
1064 while (s != NULL
1065 && (s->size <= 8
1066 || bfd_is_abs_section (s->output_section)))
1067 s = bfd_get_next_section_by_name (s);
1068 warn_eh_frame = s != NULL;
1069 }
1070 if (elfbfd && warn_eh_frame)
1071 break;
1072 }
1073 if (elfbfd)
1074 {
1075 const struct elf_backend_data *bed;
1076
1077 bed = get_elf_backend_data (elfbfd);
1078 s = bfd_make_section_with_flags (elfbfd, ".eh_frame_hdr",
1079 bed->dynamic_sec_flags
1080 | SEC_READONLY);
1081 if (s != NULL
1082 && bfd_set_section_alignment (elfbfd, s, 2))
1083 {
1084 htab->eh_info.hdr_sec = s;
1085 warn_eh_frame = FALSE;
1086 }
1087 }
1088 if (warn_eh_frame)
1089 einfo ("%P: warning: Cannot create .eh_frame_hdr section,"
1090 " --eh-frame-hdr ignored.\n");
1091 }
1092
1093 /* Get the list of files which appear in DT_NEEDED entries in
1094 dynamic objects included in the link (often there will be none).
1095 For each such file, we want to track down the corresponding
1096 library, and include the symbol table in the link. This is what
1097 the runtime dynamic linker will do. Tracking the files down here
1098 permits one dynamic object to include another without requiring
1099 special action by the person doing the link. Note that the
1100 needed list can actually grow while we are stepping through this
1101 loop. */
1102 needed = bfd_elf_get_needed_list (link_info.output_bfd, &link_info);
1103 for (l = needed; l != NULL; l = l->next)
1104 {
1105 struct bfd_link_needed_list *ll;
1106 struct dt_needed n, nn;
1107 int force;
1108
1109 /* If the lib that needs this one was --as-needed and wasn't
1110 found to be needed, then this lib isn't needed either. */
1111 if (l->by != NULL
1112 && (bfd_elf_get_dyn_lib_class (l->by) & DYN_AS_NEEDED) != 0)
1113 continue;
1114
1115 /* Skip the lib if --no-copy-dt-needed-entries and
1116 --allow-shlib-undefined is in effect. */
1117 if (l->by != NULL
1118 && link_info.unresolved_syms_in_shared_libs == RM_IGNORE
1119 && (bfd_elf_get_dyn_lib_class (l->by) & DYN_NO_ADD_NEEDED) != 0)
1120 continue;
1121
1122 /* If we've already seen this file, skip it. */
1123 for (ll = needed; ll != l; ll = ll->next)
1124 if ((ll->by == NULL
1125 || (bfd_elf_get_dyn_lib_class (ll->by) & DYN_AS_NEEDED) == 0)
1126 && strcmp (ll->name, l->name) == 0)
1127 break;
1128 if (ll != l)
1129 continue;
1130
1131 /* See if this file was included in the link explicitly. */
1132 global_needed = l;
1133 global_found = NULL;
1134 lang_for_each_input_file (gld${EMULATION_NAME}_check_needed);
1135 if (global_found != NULL
1136 && (bfd_elf_get_dyn_lib_class (global_found->the_bfd)
1137 & DYN_AS_NEEDED) == 0)
1138 continue;
1139
1140 n.by = l->by;
1141 n.name = l->name;
1142 nn.by = l->by;
1143 if (verbose)
1144 info_msg (_("%s needed by %B\n"), l->name, l->by);
1145
1146 /* As-needed libs specified on the command line (or linker script)
1147 take priority over libs found in search dirs. */
1148 if (global_found != NULL)
1149 {
1150 nn.name = global_found->filename;
1151 if (gld${EMULATION_NAME}_try_needed (&nn, TRUE))
1152 continue;
1153 }
1154
1155 /* We need to find this file and include the symbol table. We
1156 want to search for the file in the same way that the dynamic
1157 linker will search. That means that we want to use
1158 rpath_link, rpath, then the environment variable
1159 LD_LIBRARY_PATH (native only), then the DT_RPATH/DT_RUNPATH
1160 entries (native only), then the linker script LIB_SEARCH_DIRS.
1161 We do not search using the -L arguments.
1162
1163 We search twice. The first time, we skip objects which may
1164 introduce version mismatches. The second time, we force
1165 their use. See gld${EMULATION_NAME}_vercheck comment. */
1166 for (force = 0; force < 2; force++)
1167 {
1168 size_t len;
1169 search_dirs_type *search;
1170EOF
1171if [ "x${NATIVE}" = xyes ] ; then
1172fragment <<EOF
1173 const char *lib_path;
1174EOF
1175fi
1176if [ "x${USE_LIBPATH}" = xyes ] ; then
1177fragment <<EOF
1178 struct bfd_link_needed_list *rp;
1179 int found;
1180EOF
1181fi
1182fragment <<EOF
1183
1184 if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link,
1185 &n, force))
1186 break;
1187EOF
1188if [ "x${USE_LIBPATH}" = xyes ] ; then
1189fragment <<EOF
1190 if (gld${EMULATION_NAME}_search_needed (command_line.rpath,
1191 &n, force))
1192 break;
1193EOF
1194fi
1195if [ "x${NATIVE}" = xyes ] ; then
1196fragment <<EOF
1197 if (command_line.rpath_link == NULL
1198 && command_line.rpath == NULL)
1199 {
1200 lib_path = (const char *) getenv ("LD_RUN_PATH");
1201 if (gld${EMULATION_NAME}_search_needed (lib_path, &n,
1202 force))
1203 break;
1204 }
1205 lib_path = (const char *) getenv ("LD_LIBRARY_PATH");
1206 if (gld${EMULATION_NAME}_search_needed (lib_path, &n, force))
1207 break;
1208EOF
1209fi
1210if [ "x${USE_LIBPATH}" = xyes ] ; then
1211fragment <<EOF
1212 found = 0;
1213 rp = bfd_elf_get_runpath_list (link_info.output_bfd, &link_info);
1214 for (; !found && rp != NULL; rp = rp->next)
1215 {
1216 char *tmpname = gld${EMULATION_NAME}_add_sysroot (rp->name);
1217 found = (rp->by == l->by
1218 && gld${EMULATION_NAME}_search_needed (tmpname,
1219 &n,
1220 force));
1221 free (tmpname);
1222 }
1223 if (found)
1224 break;
1225
1226EOF
1227fi
1228if [ "x${USE_LIBPATH}" = xyes ] ; then
1229 case ${target} in
1230 *-*-freebsd* | *-*-dragonfly*)
1231 fragment <<EOF
1232 if (gld${EMULATION_NAME}_check_ld_elf_hints (l, force))
1233 break;
1234EOF
1235 # FreeBSD
1236 ;;
1237
1238 *-*-linux-* | *-*-k*bsd*-* | *-*-gnu*)
1239 fragment <<EOF
1240 if (gld${EMULATION_NAME}_check_ld_so_conf (l, force))
1241 break;
1242
1243EOF
1244 # Linux
1245 ;;
1246 esac
1247fi
1248fragment <<EOF
1249 len = strlen (l->name);
1250 for (search = search_head; search != NULL; search = search->next)
1251 {
1252 char *filename;
1253
1254 if (search->cmdline)
1255 continue;
1256 filename = (char *) xmalloc (strlen (search->name) + len + 2);
1257 sprintf (filename, "%s/%s", search->name, l->name);
1258 nn.name = filename;
1259 if (gld${EMULATION_NAME}_try_needed (&nn, force))
1260 break;
1261 free (filename);
1262 }
1263 if (search != NULL)
1264 break;
1265EOF
1266fragment <<EOF
1267 }
1268
1269 if (force < 2)
1270 continue;
1271
1272 einfo ("%P: warning: %s, needed by %B, not found (try using -rpath or -rpath-link)\n",
1273 l->name, l->by);
1274 }
1275}
1276
1277EOF
1278fi
1279
1280fragment <<EOF
1281
1282/* Look through an expression for an assignment statement. */
1283
1284static void
1285gld${EMULATION_NAME}_find_exp_assignment (etree_type *exp)
1286{
1287 bfd_boolean provide = FALSE;
1288
1289 switch (exp->type.node_class)
1290 {
1291 case etree_provide:
1292 case etree_provided:
1293 provide = TRUE;
1294 /* Fall thru */
1295 case etree_assign:
1296 /* We call record_link_assignment even if the symbol is defined.
1297 This is because if it is defined by a dynamic object, we
1298 actually want to use the value defined by the linker script,
1299 not the value from the dynamic object (because we are setting
1300 symbols like etext). If the symbol is defined by a regular
1301 object, then, as it happens, calling record_link_assignment
1302 will do no harm. */
1303 if (strcmp (exp->assign.dst, ".") != 0)
1304 {
1305 if (!bfd_elf_record_link_assignment (link_info.output_bfd,
1306 &link_info,
1307 exp->assign.dst, provide,
1308 exp->assign.hidden))
1309 einfo ("%P%F: failed to record assignment to %s: %E\n",
1310 exp->assign.dst);
1311 }
1312 gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src);
1313 break;
1314
1315 case etree_binary:
1316 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs);
1317 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs);
1318 break;
1319
1320 case etree_trinary:
1321 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond);
1322 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs);
1323 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs);
1324 break;
1325
1326 case etree_unary:
1327 gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child);
1328 break;
1329
1330 default:
1331 break;
1332 }
1333}
1334
1335
1336/* This is called by the before_allocation routine via
1337 lang_for_each_statement. It locates any assignment statements, and
1338 tells the ELF backend about them, in case they are assignments to
1339 symbols which are referred to by dynamic objects. */
1340
1341static void
1342gld${EMULATION_NAME}_find_statement_assignment (lang_statement_union_type *s)
1343{
1344 if (s->header.type == lang_assignment_statement_enum)
1345 gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp);
1346}
1347
1348EOF
1349
1350if test x"$LDEMUL_BEFORE_ALLOCATION" != xgld"$EMULATION_NAME"_before_allocation; then
1351 if test x"${ELF_INTERPRETER_NAME+set}" = xset; then
1352 ELF_INTERPRETER_SET_DEFAULT="
1353 if (sinterp != NULL)
1354 {
1355 sinterp->contents = (unsigned char *) ${ELF_INTERPRETER_NAME};
1356 sinterp->size = strlen ((char *) sinterp->contents) + 1;
1357 }
1358
1359"
1360 else
1361 ELF_INTERPRETER_SET_DEFAULT=
1362 fi
1363fragment <<EOF
1364
1365/* used by before_allocation and handle_option. */
1366static void
1367gld${EMULATION_NAME}_append_to_separated_string (char **to, char *op_arg)
1368{
1369 if (*to == NULL)
1370 *to = xstrdup (op_arg);
1371 else
1372 {
1373 size_t to_len = strlen (*to);
1374 size_t op_arg_len = strlen (op_arg);
1375 char *buf;
1376 char *cp = *to;
1377
1378 /* First see whether OPTARG is already in the path. */
1379 do
1380 {
1381 if (strncmp (op_arg, cp, op_arg_len) == 0
1382 && (cp[op_arg_len] == 0
1383 || cp[op_arg_len] == config.rpath_separator))
1384 /* We found it. */
1385 break;
1386
1387 /* Not yet found. */
1388 cp = strchr (cp, config.rpath_separator);
1389 if (cp != NULL)
1390 ++cp;
1391 }
1392 while (cp != NULL);
1393
1394 if (cp == NULL)
1395 {
1396 buf = xmalloc (to_len + op_arg_len + 2);
1397 sprintf (buf, "%s%c%s", *to,
1398 config.rpath_separator, op_arg);
1399 free (*to);
1400 *to = buf;
1401 }
1402 }
1403}
1404
1405/* This is called after the sections have been attached to output
1406 sections, but before any sizes or addresses have been set. */
1407
1408static void
1409gld${EMULATION_NAME}_before_allocation (void)
1410{
1411 const char *rpath;
1412 asection *sinterp;
1413 bfd *abfd;
1414 struct elf_link_hash_entry *ehdr_start = NULL;
1415 struct bfd_link_hash_entry ehdr_start_save = ehdr_start_save;
1416
1417 if (is_elf_hash_table (link_info.hash))
1418 {
1419 _bfd_elf_tls_setup (link_info.output_bfd, &link_info);
1420
1421 /* Make __ehdr_start hidden if it has been referenced, to
1422 prevent the symbol from being dynamic. */
1423 if (!link_info.relocatable)
1424 {
1425 struct elf_link_hash_entry *h
1426 = elf_link_hash_lookup (elf_hash_table (&link_info), "__ehdr_start",
1427 FALSE, FALSE, TRUE);
1428
1429 /* Only adjust the export class if the symbol was referenced
1430 and not defined, otherwise leave it alone. */
1431 if (h != NULL
1432 && (h->root.type == bfd_link_hash_new
1433 || h->root.type == bfd_link_hash_undefined
1434 || h->root.type == bfd_link_hash_undefweak
1435 || h->root.type == bfd_link_hash_common))
1436 {
1437 _bfd_elf_link_hash_hide_symbol (&link_info, h, TRUE);
1438 if (ELF_ST_VISIBILITY (h->other) != STV_INTERNAL)
1439 h->other = (h->other & ~ELF_ST_VISIBILITY (-1)) | STV_HIDDEN;
1440 /* Don't leave the symbol undefined. Undefined hidden
1441 symbols typically won't have dynamic relocations, but
1442 we most likely will need dynamic relocations for
1443 __ehdr_start if we are building a PIE or shared
1444 library. */
1445 ehdr_start = h;
1446 ehdr_start_save = h->root;
1447 h->root.type = bfd_link_hash_defined;
1448 h->root.u.def.section = bfd_abs_section_ptr;
1449 h->root.u.def.value = 0;
1450 }
1451 }
1452
1453 /* If we are going to make any variable assignments, we need to
1454 let the ELF backend know about them in case the variables are
1455 referred to by dynamic objects. */
1456 lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment);
1457 }
1458
1459 /* Let the ELF backend work out the sizes of any sections required
1460 by dynamic linking. */
1461 rpath = command_line.rpath;
1462 if (rpath == NULL)
1463 rpath = (const char *) getenv ("LD_RUN_PATH");
1464
1465 for (abfd = link_info.input_bfds; abfd; abfd = abfd->link.next)
1466 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour)
1467 {
1468 const char *audit_libs = elf_dt_audit (abfd);
1469
1470 /* If the input bfd contains an audit entry, we need to add it as
1471 a dep audit entry. */
1472 if (audit_libs && *audit_libs != '\0')
1473 {
1474 char *cp = xstrdup (audit_libs);
1475 do
1476 {
1477 int more = 0;
1478 char *cp2 = strchr (cp, config.rpath_separator);
1479
1480 if (cp2)
1481 {
1482 *cp2 = '\0';
1483 more = 1;
1484 }
1485
1486 if (cp != NULL && *cp != '\0')
1487 gld${EMULATION_NAME}_append_to_separated_string (&depaudit, cp);
1488
1489 cp = more ? ++cp2 : NULL;
1490 }
1491 while (cp != NULL);
1492 }
1493 }
1494
1495 if (! (bfd_elf_size_dynamic_sections
1496 (link_info.output_bfd, command_line.soname, rpath,
1497 command_line.filter_shlib, audit, depaudit,
1498 (const char * const *) command_line.auxiliary_filters,
1499 &link_info, &sinterp)))
1500 einfo ("%P%F: failed to set dynamic section sizes: %E\n");
1501
1502${ELF_INTERPRETER_SET_DEFAULT}
1503 /* Let the user override the dynamic linker we are using. */
1504 if (command_line.interpreter != NULL
1505 && sinterp != NULL)
1506 {
1507 sinterp->contents = (bfd_byte *) command_line.interpreter;
1508 sinterp->size = strlen (command_line.interpreter) + 1;
1509 }
1510
1511 /* Look for any sections named .gnu.warning. As a GNU extensions,
1512 we treat such sections as containing warning messages. We print
1513 out the warning message, and then zero out the section size so
1514 that it does not get copied into the output file. */
1515
1516 {
1517 LANG_FOR_EACH_INPUT_STATEMENT (is)
1518 {
1519 asection *s;
1520 bfd_size_type sz;
1521 char *msg;
1522 bfd_boolean ret;
1523
1524 if (is->flags.just_syms)
1525 continue;
1526
1527 s = bfd_get_section_by_name (is->the_bfd, ".gnu.warning");
1528 if (s == NULL)
1529 continue;
1530
1531 sz = s->size;
1532 msg = (char *) xmalloc ((size_t) (sz + 1));
1533 if (! bfd_get_section_contents (is->the_bfd, s, msg,
1534 (file_ptr) 0, sz))
1535 einfo ("%F%B: Can't read contents of section .gnu.warning: %E\n",
1536 is->the_bfd);
1537 msg[sz] = '\0';
1538 ret = link_info.callbacks->warning (&link_info, msg,
1539 (const char *) NULL,
1540 is->the_bfd, (asection *) NULL,
1541 (bfd_vma) 0);
1542 ASSERT (ret);
1543 free (msg);
1544
1545 /* Clobber the section size, so that we don't waste space
1546 copying the warning into the output file. If we've already
1547 sized the output section, adjust its size. The adjustment
1548 is on rawsize because targets that size sections early will
1549 have called lang_reset_memory_regions after sizing. */
1550 if (s->output_section != NULL
1551 && s->output_section->rawsize >= s->size)
1552 s->output_section->rawsize -= s->size;
1553
1554 s->size = 0;
1555
1556 /* Also set SEC_EXCLUDE, so that local symbols defined in the
1557 warning section don't get copied to the output. */
1558 s->flags |= SEC_EXCLUDE | SEC_KEEP;
1559 }
1560 }
1561
1562 before_allocation_default ();
1563
1564 if (!bfd_elf_size_dynsym_hash_dynstr (link_info.output_bfd, &link_info))
1565 einfo ("%P%F: failed to set dynamic section sizes: %E\n");
1566
1567 if (ehdr_start != NULL)
1568 {
1569 /* If we twiddled __ehdr_start to defined earlier, put it back
1570 as it was. */
1571 ehdr_start->root.type = ehdr_start_save.type;
1572 ehdr_start->root.u = ehdr_start_save.u;
1573 }
1574}
1575
1576EOF
1577fi
1578
1579if test x"$LDEMUL_OPEN_DYNAMIC_ARCHIVE" != xgld"$EMULATION_NAME"_open_dynamic_archive; then
1580fragment <<EOF
1581
1582/* Try to open a dynamic archive. This is where we know that ELF
1583 dynamic libraries have an extension of .so (or .sl on oddball systems
1584 like hpux). */
1585
1586static bfd_boolean
1587gld${EMULATION_NAME}_open_dynamic_archive
1588 (const char *arch, search_dirs_type *search, lang_input_statement_type *entry)
1589{
1590 const char *filename;
1591 char *string;
1592 size_t len;
1593 bfd_boolean opened = FALSE;
1594
1595 if (! entry->flags.maybe_archive)
1596 return FALSE;
1597
1598 filename = entry->filename;
1599 len = strlen (search->name) + strlen (filename);
1600 if (entry->flags.full_name_provided)
1601 {
1602 len += sizeof "/";
1603 string = (char *) xmalloc (len);
1604 sprintf (string, "%s/%s", search->name, filename);
1605 }
1606 else
1607 {
1608 size_t xlen = 0;
1609
1610 len += strlen (arch) + sizeof "/lib.so";
1611#ifdef EXTRA_SHLIB_EXTENSION
1612 xlen = (strlen (EXTRA_SHLIB_EXTENSION) > 3
1613 ? strlen (EXTRA_SHLIB_EXTENSION) - 3
1614 : 0);
1615#endif
1616 string = (char *) xmalloc (len + xlen);
1617 sprintf (string, "%s/lib%s%s.so", search->name, filename, arch);
1618#ifdef EXTRA_SHLIB_EXTENSION
1619 /* Try the .so extension first. If that fails build a new filename
1620 using EXTRA_SHLIB_EXTENSION. */
1621 opened = ldfile_try_open_bfd (string, entry);
1622 if (!opened)
1623 strcpy (string + len - 4, EXTRA_SHLIB_EXTENSION);
1624#endif
1625 }
1626
1627 if (!opened && !ldfile_try_open_bfd (string, entry))
1628 {
1629 free (string);
1630 return FALSE;
1631 }
1632
1633 entry->filename = string;
1634
1635 /* We have found a dynamic object to include in the link. The ELF
1636 backend linker will create a DT_NEEDED entry in the .dynamic
1637 section naming this file. If this file includes a DT_SONAME
1638 entry, it will be used. Otherwise, the ELF linker will just use
1639 the name of the file. For an archive found by searching, like
1640 this one, the DT_NEEDED entry should consist of just the name of
1641 the file, without the path information used to find it. Note
1642 that we only need to do this if we have a dynamic object; an
1643 archive will never be referenced by a DT_NEEDED entry.
1644
1645 FIXME: This approach--using bfd_elf_set_dt_needed_name--is not
1646 very pretty. I haven't been able to think of anything that is
1647 pretty, though. */
1648 if (bfd_check_format (entry->the_bfd, bfd_object)
1649 && (entry->the_bfd->flags & DYNAMIC) != 0)
1650 {
1651 ASSERT (entry->flags.maybe_archive && entry->flags.search_dirs);
1652
1653 /* Rather than duplicating the logic above. Just use the
1654 filename we recorded earlier. */
1655
1656 if (!entry->flags.full_name_provided)
1657 filename = lbasename (entry->filename);
1658 bfd_elf_set_dt_needed_name (entry->the_bfd, filename);
1659 }
1660
1661 return TRUE;
1662}
1663
1664EOF
1665fi
1666
1667if test x"$LDEMUL_PLACE_ORPHAN" != xgld"$EMULATION_NAME"_place_orphan; then
1668fragment <<EOF
1669
1670/* A variant of lang_output_section_find used by place_orphan. */
1671
1672static lang_output_section_statement_type *
1673output_rel_find (asection *sec, int isdyn)
1674{
1675 lang_output_section_statement_type *lookup;
1676 lang_output_section_statement_type *last = NULL;
1677 lang_output_section_statement_type *last_alloc = NULL;
1678 lang_output_section_statement_type *last_ro_alloc = NULL;
1679 lang_output_section_statement_type *last_rel = NULL;
1680 lang_output_section_statement_type *last_rel_alloc = NULL;
1681 int rela = sec->name[4] == 'a';
1682
1683 for (lookup = &lang_output_section_statement.head->output_section_statement;
1684 lookup != NULL;
1685 lookup = lookup->next)
1686 {
1687 if (lookup->constraint >= 0
1688 && CONST_STRNEQ (lookup->name, ".rel"))
1689 {
1690 int lookrela = lookup->name[4] == 'a';
1691
1692 /* .rel.dyn must come before all other reloc sections, to suit
1693 GNU ld.so. */
1694 if (isdyn)
1695 break;
1696
1697 /* Don't place after .rel.plt as doing so results in wrong
1698 dynamic tags. */
1699 if (strcmp (".plt", lookup->name + 4 + lookrela) == 0)
1700 break;
1701
1702 if (rela == lookrela || last_rel == NULL)
1703 last_rel = lookup;
1704 if ((rela == lookrela || last_rel_alloc == NULL)
1705 && lookup->bfd_section != NULL
1706 && (lookup->bfd_section->flags & SEC_ALLOC) != 0)
1707 last_rel_alloc = lookup;
1708 }
1709
1710 last = lookup;
1711 if (lookup->bfd_section != NULL
1712 && (lookup->bfd_section->flags & SEC_ALLOC) != 0)
1713 {
1714 last_alloc = lookup;
1715 if ((lookup->bfd_section->flags & SEC_READONLY) != 0)
1716 last_ro_alloc = lookup;
1717 }
1718 }
1719
1720 if (last_rel_alloc)
1721 return last_rel_alloc;
1722
1723 if (last_rel)
1724 return last_rel;
1725
1726 if (last_ro_alloc)
1727 return last_ro_alloc;
1728
1729 if (last_alloc)
1730 return last_alloc;
1731
1732 return last;
1733}
1734
1735/* Place an orphan section. We use this to put random SHF_ALLOC
1736 sections in the right segment. */
1737
1738static lang_output_section_statement_type *
1739gld${EMULATION_NAME}_place_orphan (asection *s,
1740 const char *secname,
1741 int constraint)
1742{
1743 static struct orphan_save hold[] =
1744 {
1745 { ".text",
1746 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
1747 0, 0, 0, 0 },
1748 { ".rodata",
1749 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1750 0, 0, 0, 0 },
1751 { ".tdata",
1752 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_THREAD_LOCAL,
1753 0, 0, 0, 0 },
1754 { ".data",
1755 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
1756 0, 0, 0, 0 },
1757 { ".bss",
1758 SEC_ALLOC,
1759 0, 0, 0, 0 },
1760 { 0,
1761 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1762 0, 0, 0, 0 },
1763 { ".interp",
1764 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1765 0, 0, 0, 0 },
1766 { ".sdata",
1767 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_SMALL_DATA,
1768 0, 0, 0, 0 },
1769 { ".comment",
1770 SEC_HAS_CONTENTS,
1771 0, 0, 0, 0 },
1772 };
1773 enum orphan_save_index
1774 {
1775 orphan_text = 0,
1776 orphan_rodata,
1777 orphan_tdata,
1778 orphan_data,
1779 orphan_bss,
1780 orphan_rel,
1781 orphan_interp,
1782 orphan_sdata,
1783 orphan_nonalloc
1784 };
1785 static int orphan_init_done = 0;
1786 struct orphan_save *place;
1787 lang_output_section_statement_type *after;
1788 lang_output_section_statement_type *os;
1789 lang_output_section_statement_type *match_by_name = NULL;
1790 int isdyn = 0;
1791 int iself = s->owner->xvec->flavour == bfd_target_elf_flavour;
1792 unsigned int sh_type = iself ? elf_section_type (s) : SHT_NULL;
1793
1794 if (! link_info.relocatable
1795 && link_info.combreloc
1796 && (s->flags & SEC_ALLOC))
1797 {
1798 if (iself)
1799 switch (sh_type)
1800 {
1801 case SHT_RELA:
1802 secname = ".rela.dyn";
1803 isdyn = 1;
1804 break;
1805 case SHT_REL:
1806 secname = ".rel.dyn";
1807 isdyn = 1;
1808 break;
1809 default:
1810 break;
1811 }
1812 else if (CONST_STRNEQ (secname, ".rel"))
1813 {
1814 secname = secname[4] == 'a' ? ".rela.dyn" : ".rel.dyn";
1815 isdyn = 1;
1816 }
1817 }
1818
1819 /* Look through the script to see where to place this section. */
1820 if (constraint == 0)
1821 for (os = lang_output_section_find (secname);
1822 os != NULL;
1823 os = next_matching_output_section_statement (os, 0))
1824 {
1825 /* If we don't match an existing output section, tell
1826 lang_insert_orphan to create a new output section. */
1827 constraint = SPECIAL;
1828
1829 if (os->bfd_section != NULL
1830 && (os->bfd_section->flags == 0
1831 || (_bfd_elf_match_sections_by_type (link_info.output_bfd,
1832 os->bfd_section,
1833 s->owner, s)
1834 && ((s->flags ^ os->bfd_section->flags)
1835 & (SEC_LOAD | SEC_ALLOC)) == 0)))
1836 {
1837 /* We already have an output section statement with this
1838 name, and its bfd section has compatible flags.
1839 If the section already exists but does not have any flags
1840 set, then it has been created by the linker, probably as a
1841 result of a --section-start command line switch. */
1842 lang_add_section (&os->children, s, NULL, os);
1843 return os;
1844 }
1845
1846 /* Save unused output sections in case we can match them
1847 against orphans later. */
1848 if (os->bfd_section == NULL)
1849 match_by_name = os;
1850 }
1851
1852 /* If we didn't match an active output section, see if we matched an
1853 unused one and use that. */
1854 if (match_by_name)
1855 {
1856 lang_add_section (&match_by_name->children, s, NULL, match_by_name);
1857 return match_by_name;
1858 }
1859
1860 if (!orphan_init_done)
1861 {
1862 struct orphan_save *ho;
1863
1864 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
1865 if (ho->name != NULL)
1866 {
1867 ho->os = lang_output_section_find (ho->name);
1868 if (ho->os != NULL && ho->os->flags == 0)
1869 ho->os->flags = ho->flags;
1870 }
1871 orphan_init_done = 1;
1872 }
1873
1874 /* If this is a final link, then always put .gnu.warning.SYMBOL
1875 sections into the .text section to get them out of the way. */
1876 if (link_info.executable
1877 && ! link_info.relocatable
1878 && CONST_STRNEQ (s->name, ".gnu.warning.")
1879 && hold[orphan_text].os != NULL)
1880 {
1881 os = hold[orphan_text].os;
1882 lang_add_section (&os->children, s, NULL, os);
1883 return os;
1884 }
1885
1886 /* Decide which segment the section should go in based on the
1887 section name and section flags. We put loadable .note sections
1888 right after the .interp section, so that the PT_NOTE segment is
1889 stored right after the program headers where the OS can read it
1890 in the first page. */
1891
1892 place = NULL;
1893 if ((s->flags & (SEC_ALLOC | SEC_DEBUGGING)) == 0)
1894 place = &hold[orphan_nonalloc];
1895 else if ((s->flags & SEC_ALLOC) == 0)
1896 ;
1897 else if ((s->flags & SEC_LOAD) != 0
1898 && ((iself && sh_type == SHT_NOTE)
1899 || (!iself && CONST_STRNEQ (secname, ".note"))))
1900 place = &hold[orphan_interp];
1901 else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) == 0)
1902 place = &hold[orphan_bss];
1903 else if ((s->flags & SEC_SMALL_DATA) != 0)
1904 place = &hold[orphan_sdata];
1905 else if ((s->flags & SEC_THREAD_LOCAL) != 0)
1906 place = &hold[orphan_tdata];
1907 else if ((s->flags & SEC_READONLY) == 0)
1908 place = &hold[orphan_data];
1909 else if (((iself && (sh_type == SHT_RELA || sh_type == SHT_REL))
1910 || (!iself && CONST_STRNEQ (secname, ".rel")))
1911 && (s->flags & SEC_LOAD) != 0)
1912 place = &hold[orphan_rel];
1913 else if ((s->flags & SEC_CODE) == 0)
1914 place = &hold[orphan_rodata];
1915 else
1916 place = &hold[orphan_text];
1917
1918 after = NULL;
1919 if (place != NULL)
1920 {
1921 if (place->os == NULL)
1922 {
1923 if (place->name != NULL)
1924 place->os = lang_output_section_find (place->name);
1925 else
1926 place->os = output_rel_find (s, isdyn);
1927 }
1928 after = place->os;
1929 if (after == NULL)
1930 after = lang_output_section_find_by_flags
1931 (s, &place->os, _bfd_elf_match_sections_by_type);
1932 if (after == NULL)
1933 /* *ABS* is always the first output section statement. */
1934 after = &lang_output_section_statement.head->output_section_statement;
1935 }
1936
1937 return lang_insert_orphan (s, secname, constraint, after, place, NULL, NULL);
1938}
1939EOF
1940fi
1941
1942if test x"$LDEMUL_AFTER_ALLOCATION" != xgld"$EMULATION_NAME"_after_allocation; then
1943fragment <<EOF
1944
1945static void
1946gld${EMULATION_NAME}_after_allocation (void)
1947{
1948 int need_layout = bfd_elf_discard_info (link_info.output_bfd, &link_info);
1949
1950 if (need_layout < 0)
1951 einfo ("%X%P: .eh_frame/.stab edit: %E\n");
1952 else
1953 gld${EMULATION_NAME}_map_segments (need_layout);
1954}
1955EOF
1956fi
1957
1958if test x"$LDEMUL_GET_SCRIPT" != xgld"$EMULATION_NAME"_get_script; then
1959fragment <<EOF
1960
1961static char *
1962gld${EMULATION_NAME}_get_script (int *isfile)
1963EOF
1964
1965if test x"$COMPILE_IN" = xyes
1966then
1967# Scripts compiled in.
1968
1969# sed commands to quote an ld script as a C string.
1970sc="-f stringify.sed"
1971
1972fragment <<EOF
1973{
1974 *isfile = 0;
1975
1976 if (link_info.relocatable && config.build_constructors)
1977 return
1978EOF
1979sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1980echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
1981sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
1982echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
1983sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
1984if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then : ; else
1985echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
1986sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
1987fi
1988if test -n "$GENERATE_PIE_SCRIPT" ; then
1989if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1990echo ' ; else if (link_info.pie && link_info.combreloc' >> e${EMULATION_NAME}.c
1991echo ' && link_info.relro' >> e${EMULATION_NAME}.c
1992echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
1993sed $sc ldscripts/${EMULATION_NAME}.xdw >> e${EMULATION_NAME}.c
1994echo ' ; else if (link_info.pie && link_info.combreloc) return' >> e${EMULATION_NAME}.c
1995sed $sc ldscripts/${EMULATION_NAME}.xdc >> e${EMULATION_NAME}.c
1996fi
1997echo ' ; else if (link_info.pie) return' >> e${EMULATION_NAME}.c
1998sed $sc ldscripts/${EMULATION_NAME}.xd >> e${EMULATION_NAME}.c
1999fi
2000if test -n "$GENERATE_SHLIB_SCRIPT" ; then
2001if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
2002echo ' ; else if (link_info.shared && link_info.combreloc' >> e${EMULATION_NAME}.c
2003echo ' && link_info.relro' >> e${EMULATION_NAME}.c
2004echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
2005sed $sc ldscripts/${EMULATION_NAME}.xsw >> e${EMULATION_NAME}.c
2006echo ' ; else if (link_info.shared && link_info.combreloc) return' >> e${EMULATION_NAME}.c
2007sed $sc ldscripts/${EMULATION_NAME}.xsc >> e${EMULATION_NAME}.c
2008fi
2009echo ' ; else if (link_info.shared) return' >> e${EMULATION_NAME}.c
2010sed $sc ldscripts/${EMULATION_NAME}.xs >> e${EMULATION_NAME}.c
2011fi
2012if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
2013echo ' ; else if (link_info.combreloc && link_info.relro' >> e${EMULATION_NAME}.c
2014echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
2015sed $sc ldscripts/${EMULATION_NAME}.xw >> e${EMULATION_NAME}.c
2016echo ' ; else if (link_info.combreloc) return' >> e${EMULATION_NAME}.c
2017sed $sc ldscripts/${EMULATION_NAME}.xc >> e${EMULATION_NAME}.c
2018fi
2019echo ' ; else return' >> e${EMULATION_NAME}.c
2020sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
2021echo '; }' >> e${EMULATION_NAME}.c
2022
2023else
2024# Scripts read from the filesystem.
2025
2026fragment <<EOF
2027{
2028 *isfile = 1;
2029
2030 if (link_info.relocatable && config.build_constructors)
2031 return "ldscripts/${EMULATION_NAME}.xu";
2032 else if (link_info.relocatable)
2033 return "ldscripts/${EMULATION_NAME}.xr";
2034 else if (!config.text_read_only)
2035 return "ldscripts/${EMULATION_NAME}.xbn";
2036EOF
2037if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then :
2038else
2039fragment <<EOF
2040 else if (!config.magic_demand_paged)
2041 return "ldscripts/${EMULATION_NAME}.xn";
2042EOF
2043fi
2044if test -n "$GENERATE_PIE_SCRIPT" ; then
2045if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
2046fragment <<EOF
2047 else if (link_info.pie && link_info.combreloc
2048 && link_info.relro && (link_info.flags & DF_BIND_NOW))
2049 return "ldscripts/${EMULATION_NAME}.xdw";
2050 else if (link_info.pie && link_info.combreloc)
2051 return "ldscripts/${EMULATION_NAME}.xdc";
2052EOF
2053fi
2054fragment <<EOF
2055 else if (link_info.pie)
2056 return "ldscripts/${EMULATION_NAME}.xd";
2057EOF
2058fi
2059if test -n "$GENERATE_SHLIB_SCRIPT" ; then
2060if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
2061fragment <<EOF
2062 else if (link_info.shared && link_info.combreloc
2063 && link_info.relro && (link_info.flags & DF_BIND_NOW))
2064 return "ldscripts/${EMULATION_NAME}.xsw";
2065 else if (link_info.shared && link_info.combreloc)
2066 return "ldscripts/${EMULATION_NAME}.xsc";
2067EOF
2068fi
2069fragment <<EOF
2070 else if (link_info.shared)
2071 return "ldscripts/${EMULATION_NAME}.xs";
2072EOF
2073fi
2074if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
2075fragment <<EOF
2076 else if (link_info.combreloc && link_info.relro
2077 && (link_info.flags & DF_BIND_NOW))
2078 return "ldscripts/${EMULATION_NAME}.xw";
2079 else if (link_info.combreloc)
2080 return "ldscripts/${EMULATION_NAME}.xc";
2081EOF
2082fi
2083fragment <<EOF
2084 else
2085 return "ldscripts/${EMULATION_NAME}.x";
2086}
2087
2088EOF
2089fi
2090fi
2091
2092if test -n "$PARSE_AND_LIST_PROLOGUE" ; then
2093fragment <<EOF
2094 $PARSE_AND_LIST_PROLOGUE
2095EOF
2096fi
2097
2098fragment <<EOF
2099
2100#define OPTION_DISABLE_NEW_DTAGS (400)
2101#define OPTION_ENABLE_NEW_DTAGS (OPTION_DISABLE_NEW_DTAGS + 1)
2102#define OPTION_GROUP (OPTION_ENABLE_NEW_DTAGS + 1)
2103#define OPTION_EH_FRAME_HDR (OPTION_GROUP + 1)
2104#define OPTION_EXCLUDE_LIBS (OPTION_EH_FRAME_HDR + 1)
2105#define OPTION_HASH_STYLE (OPTION_EXCLUDE_LIBS + 1)
2106#define OPTION_BUILD_ID (OPTION_HASH_STYLE + 1)
2107#define OPTION_AUDIT (OPTION_BUILD_ID + 1)
2108
2109static void
2110gld${EMULATION_NAME}_add_options
2111 (int ns, char **shortopts, int nl, struct option **longopts,
2112 int nrl ATTRIBUTE_UNUSED, struct option **really_longopts ATTRIBUTE_UNUSED)
2113{
2114EOF
2115if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2116fragment <<EOF
2117 static const char xtra_short[] = "${PARSE_AND_LIST_SHORTOPTS}z:P:";
2118EOF
2119else
2120fragment <<EOF
2121 static const char xtra_short[] = "${PARSE_AND_LIST_SHORTOPTS}z:";
2122EOF
2123fi
2124fragment <<EOF
2125 static const struct option xtra_long[] = {
2126EOF
2127if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2128fragment <<EOF
2129 {"audit", required_argument, NULL, OPTION_AUDIT},
2130 {"Bgroup", no_argument, NULL, OPTION_GROUP},
2131EOF
2132fi
2133fragment <<EOF
2134 {"build-id", optional_argument, NULL, OPTION_BUILD_ID},
2135EOF
2136if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2137fragment <<EOF
2138 {"depaudit", required_argument, NULL, 'P'},
2139 {"disable-new-dtags", no_argument, NULL, OPTION_DISABLE_NEW_DTAGS},
2140 {"enable-new-dtags", no_argument, NULL, OPTION_ENABLE_NEW_DTAGS},
2141 {"eh-frame-hdr", no_argument, NULL, OPTION_EH_FRAME_HDR},
2142 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
2143 {"hash-style", required_argument, NULL, OPTION_HASH_STYLE},
2144EOF
2145fi
2146if test -n "$PARSE_AND_LIST_LONGOPTS" ; then
2147fragment <<EOF
2148 $PARSE_AND_LIST_LONGOPTS
2149EOF
2150fi
2151fragment <<EOF
2152 {NULL, no_argument, NULL, 0}
2153 };
2154
2155 *shortopts = (char *) xrealloc (*shortopts, ns + sizeof (xtra_short));
2156 memcpy (*shortopts + ns, &xtra_short, sizeof (xtra_short));
2157 *longopts = (struct option *)
2158 xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
2159 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
2160}
2161
2162#define DEFAULT_BUILD_ID_STYLE "sha1"
2163
2164static bfd_boolean
2165gld${EMULATION_NAME}_handle_option (int optc)
2166{
2167 switch (optc)
2168 {
2169 default:
2170 return FALSE;
2171
2172 case OPTION_BUILD_ID:
2173 if (emit_note_gnu_build_id != NULL)
2174 {
2175 free ((char *) emit_note_gnu_build_id);
2176 emit_note_gnu_build_id = NULL;
2177 }
2178 if (optarg == NULL)
2179 optarg = DEFAULT_BUILD_ID_STYLE;
2180 if (strcmp (optarg, "none"))
2181 emit_note_gnu_build_id = xstrdup (optarg);
2182 break;
2183
2184EOF
2185
2186if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2187fragment <<EOF
2188 case OPTION_AUDIT:
2189 gld${EMULATION_NAME}_append_to_separated_string (&audit, optarg);
2190 break;
2191
2192 case 'P':
2193 gld${EMULATION_NAME}_append_to_separated_string (&depaudit, optarg);
2194 break;
2195
2196 case OPTION_DISABLE_NEW_DTAGS:
2197 link_info.new_dtags = FALSE;
2198 break;
2199
2200 case OPTION_ENABLE_NEW_DTAGS:
2201 link_info.new_dtags = TRUE;
2202 break;
2203
2204 case OPTION_EH_FRAME_HDR:
2205 link_info.eh_frame_hdr = TRUE;
2206 break;
2207
2208 case OPTION_GROUP:
2209 link_info.flags_1 |= (bfd_vma) DF_1_GROUP;
2210 /* Groups must be self-contained. */
2211 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
2212 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
2213 break;
2214
2215 case OPTION_EXCLUDE_LIBS:
2216 add_excluded_libs (optarg);
2217 break;
2218
2219 case OPTION_HASH_STYLE:
2220 link_info.emit_hash = FALSE;
2221 link_info.emit_gnu_hash = FALSE;
2222 if (strcmp (optarg, "sysv") == 0)
2223 link_info.emit_hash = TRUE;
2224 else if (strcmp (optarg, "gnu") == 0)
2225 link_info.emit_gnu_hash = TRUE;
2226 else if (strcmp (optarg, "both") == 0)
2227 {
2228 link_info.emit_hash = TRUE;
2229 link_info.emit_gnu_hash = TRUE;
2230 }
2231 else
2232 einfo (_("%P%F: invalid hash style \`%s'\n"), optarg);
2233 break;
2234
2235EOF
2236fi
2237fragment <<EOF
2238 case 'z':
2239 if (strcmp (optarg, "defs") == 0)
2240 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
2241 else if (strcmp (optarg, "muldefs") == 0)
2242 link_info.allow_multiple_definition = TRUE;
2243 else if (CONST_STRNEQ (optarg, "max-page-size="))
2244 {
2245 char *end;
2246
2247 config.maxpagesize = strtoul (optarg + 14, &end, 0);
2248 if (*end || (config.maxpagesize & (config.maxpagesize - 1)) != 0)
2249 einfo (_("%P%F: invalid maxium page size \`%s'\n"),
2250 optarg + 14);
2251 }
2252 else if (CONST_STRNEQ (optarg, "common-page-size="))
2253 {
2254 char *end;
2255 config.commonpagesize = strtoul (optarg + 17, &end, 0);
2256 if (*end
2257 || (config.commonpagesize & (config.commonpagesize - 1)) != 0)
2258 einfo (_("%P%F: invalid common page size \`%s'\n"),
2259 optarg + 17);
2260 }
2261 else if (CONST_STRNEQ (optarg, "stack-size="))
2262 {
2263 char *end;
2264 link_info.stacksize = strtoul (optarg + 11, &end, 0);
2265 if (*end || link_info.stacksize < 0)
2266 einfo (_("%P%F: invalid stack size \`%s'\n"), optarg + 11);
2267 if (!link_info.stacksize)
2268 /* Use -1 for explicit no-stack, because zero means
2269 'default'. */
2270 link_info.stacksize = -1;
2271 }
2272 else if (strcmp (optarg, "execstack") == 0)
2273 {
2274 link_info.execstack = TRUE;
2275 link_info.noexecstack = FALSE;
2276 }
2277 else if (strcmp (optarg, "noexecstack") == 0)
2278 {
2279 link_info.noexecstack = TRUE;
2280 link_info.execstack = FALSE;
2281 }
2282EOF
2283
2284if test x"$BNDPLT" = xyes; then
2285fragment <<EOF
2286 else if (strcmp (optarg, "bndplt") == 0)
2287 link_info.bndplt = TRUE;
2288EOF
2289fi
2290
2291if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2292fragment <<EOF
2293 else if (strcmp (optarg, "global") == 0)
2294 link_info.flags_1 |= (bfd_vma) DF_1_GLOBAL;
2295 else if (strcmp (optarg, "initfirst") == 0)
2296 link_info.flags_1 |= (bfd_vma) DF_1_INITFIRST;
2297 else if (strcmp (optarg, "interpose") == 0)
2298 link_info.flags_1 |= (bfd_vma) DF_1_INTERPOSE;
2299 else if (strcmp (optarg, "loadfltr") == 0)
2300 link_info.flags_1 |= (bfd_vma) DF_1_LOADFLTR;
2301 else if (strcmp (optarg, "nodefaultlib") == 0)
2302 link_info.flags_1 |= (bfd_vma) DF_1_NODEFLIB;
2303 else if (strcmp (optarg, "nodelete") == 0)
2304 link_info.flags_1 |= (bfd_vma) DF_1_NODELETE;
2305 else if (strcmp (optarg, "nodlopen") == 0)
2306 link_info.flags_1 |= (bfd_vma) DF_1_NOOPEN;
2307 else if (strcmp (optarg, "nodump") == 0)
2308 link_info.flags_1 |= (bfd_vma) DF_1_NODUMP;
2309 else if (strcmp (optarg, "now") == 0)
2310 {
2311 link_info.flags |= (bfd_vma) DF_BIND_NOW;
2312 link_info.flags_1 |= (bfd_vma) DF_1_NOW;
2313 }
2314 else if (strcmp (optarg, "lazy") == 0)
2315 {
2316 link_info.flags &= ~(bfd_vma) DF_BIND_NOW;
2317 link_info.flags_1 &= ~(bfd_vma) DF_1_NOW;
2318 }
2319 else if (strcmp (optarg, "origin") == 0)
2320 {
2321 link_info.flags |= (bfd_vma) DF_ORIGIN;
2322 link_info.flags_1 |= (bfd_vma) DF_1_ORIGIN;
2323 }
2324 else if (strcmp (optarg, "combreloc") == 0)
2325 link_info.combreloc = TRUE;
2326 else if (strcmp (optarg, "nocombreloc") == 0)
2327 link_info.combreloc = FALSE;
2328 else if (strcmp (optarg, "nocopyreloc") == 0)
2329 link_info.nocopyreloc = TRUE;
2330 else if (strcmp (optarg, "relro") == 0)
2331 link_info.relro = TRUE;
2332 else if (strcmp (optarg, "norelro") == 0)
2333 link_info.relro = FALSE;
2334 else if (strcmp (optarg, "text") == 0)
2335 link_info.error_textrel = TRUE;
2336 else if (strcmp (optarg, "notext") == 0)
2337 link_info.error_textrel = FALSE;
2338 else if (strcmp (optarg, "textoff") == 0)
2339 link_info.error_textrel = FALSE;
2340EOF
2341fi
2342
2343fragment <<EOF
2344 else
2345 einfo (_("%P: warning: -z %s ignored.\n"), optarg);
2346 break;
2347EOF
2348
2349if test -n "$PARSE_AND_LIST_ARGS_CASES" ; then
2350fragment <<EOF
2351 $PARSE_AND_LIST_ARGS_CASES
2352EOF
2353fi
2354
2355fragment <<EOF
2356 }
2357
2358 return TRUE;
2359}
2360
2361EOF
2362
2363if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
2364fragment <<EOF
2365
2366static void
2367gld${EMULATION_NAME}_list_options (FILE * file)
2368{
2369EOF
2370if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2371fragment <<EOF
2372 fprintf (file, _("\
2373 --audit=AUDITLIB Specify a library to use for auditing\n"));
2374 fprintf (file, _("\
2375 -Bgroup Selects group name lookup rules for DSO\n"));
2376EOF
2377fi
2378fragment <<EOF
2379 fprintf (file, _("\
2380 --build-id[=STYLE] Generate build ID note\n"));
2381EOF
2382if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2383fragment <<EOF
2384 fprintf (file, _("\
2385 -P AUDITLIB, --depaudit=AUDITLIB\n" "\
2386 Specify a library to use for auditing dependencies\n"));
2387 fprintf (file, _("\
2388 --disable-new-dtags Disable new dynamic tags\n"));
2389 fprintf (file, _("\
2390 --enable-new-dtags Enable new dynamic tags\n"));
2391 fprintf (file, _("\
2392 --eh-frame-hdr Create .eh_frame_hdr section\n"));
2393 fprintf (file, _("\
2394 --exclude-libs=LIBS Make all symbols in LIBS hidden\n"));
2395 fprintf (file, _("\
2396 --hash-style=STYLE Set hash style to sysv, gnu or both\n"));
2397 fprintf (file, _("\
2398 -z combreloc Merge dynamic relocs into one section and sort\n"));
2399EOF
2400fi
2401
2402fragment <<EOF
2403 fprintf (file, _("\
2404 -z common-page-size=SIZE Set common page size to SIZE\n"));
2405 fprintf (file, _("\
2406 -z defs Report unresolved symbols in object files.\n"));
2407 fprintf (file, _("\
2408 -z execstack Mark executable as requiring executable stack\n"));
2409EOF
2410
2411if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2412fragment <<EOF
2413 fprintf (file, _("\
2414 -z global Make symbols in DSO available for subsequently\n\
2415 loaded objects\n"));
2416 fprintf (file, _("\
2417 -z initfirst Mark DSO to be initialized first at runtime\n"));
2418 fprintf (file, _("\
2419 -z interpose Mark object to interpose all DSOs but executable\n"));
2420 fprintf (file, _("\
2421 -z lazy Mark object lazy runtime binding (default)\n"));
2422 fprintf (file, _("\
2423 -z loadfltr Mark object requiring immediate process\n"));
2424EOF
2425fi
2426
2427fragment <<EOF
2428 fprintf (file, _("\
2429 -z max-page-size=SIZE Set maximum page size to SIZE\n"));
2430 fprintf (file, _("\
2431 -z muldefs Allow multiple definitions\n"));
2432EOF
2433
2434if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2435fragment <<EOF
2436 fprintf (file, _("\
2437 -z nocombreloc Don't merge dynamic relocs into one section\n"));
2438 fprintf (file, _("\
2439 -z nocopyreloc Don't create copy relocs\n"));
2440 fprintf (file, _("\
2441 -z nodefaultlib Mark object not to use default search paths\n"));
2442 fprintf (file, _("\
2443 -z nodelete Mark DSO non-deletable at runtime\n"));
2444 fprintf (file, _("\
2445 -z nodlopen Mark DSO not available to dlopen\n"));
2446 fprintf (file, _("\
2447 -z nodump Mark DSO not available to dldump\n"));
2448EOF
2449fi
2450fragment <<EOF
2451 fprintf (file, _("\
2452 -z noexecstack Mark executable as not requiring executable stack\n"));
2453EOF
2454if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2455fragment <<EOF
2456 fprintf (file, _("\
2457 -z norelro Don't create RELRO program header\n"));
2458 fprintf (file, _("\
2459 -z now Mark object non-lazy runtime binding\n"));
2460 fprintf (file, _("\
2461 -z origin Mark object requiring immediate \$ORIGIN\n\
2462 processing at runtime\n"));
2463 fprintf (file, _("\
2464 -z relro Create RELRO program header\n"));
2465 fprintf (file, _("\
2466 -z stacksize=SIZE Set size of stack segment\n"));
2467EOF
2468fi
2469
2470if test x"$BNDPLT" = xyes; then
2471fragment <<EOF
2472 fprintf (file, _("\
2473 -z bndplt Always generate BND prefix in PLT entries\n"));
2474EOF
2475fi
2476
2477if test -n "$PARSE_AND_LIST_OPTIONS" ; then
2478fragment <<EOF
2479 $PARSE_AND_LIST_OPTIONS
2480EOF
2481fi
2482
2483fragment <<EOF
2484}
2485EOF
2486
2487if test -n "$PARSE_AND_LIST_EPILOGUE" ; then
2488fragment <<EOF
2489 $PARSE_AND_LIST_EPILOGUE
2490EOF
2491fi
2492fi
2493
2494fragment <<EOF
2495
2496struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
2497{
2498 ${LDEMUL_BEFORE_PARSE-gld${EMULATION_NAME}_before_parse},
2499 ${LDEMUL_SYSLIB-syslib_default},
2500 ${LDEMUL_HLL-hll_default},
2501 ${LDEMUL_AFTER_PARSE-after_parse_default},
2502 ${LDEMUL_AFTER_OPEN-gld${EMULATION_NAME}_after_open},
2503 ${LDEMUL_AFTER_ALLOCATION-gld${EMULATION_NAME}_after_allocation},
2504 ${LDEMUL_SET_OUTPUT_ARCH-set_output_arch_default},
2505 ${LDEMUL_CHOOSE_TARGET-ldemul_default_target},
2506 ${LDEMUL_BEFORE_ALLOCATION-gld${EMULATION_NAME}_before_allocation},
2507 ${LDEMUL_GET_SCRIPT-gld${EMULATION_NAME}_get_script},
2508 "${EMULATION_NAME}",
2509 "${OUTPUT_FORMAT}",
2510 ${LDEMUL_FINISH-finish_default},
2511 ${LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS-NULL},
2512 ${LDEMUL_OPEN_DYNAMIC_ARCHIVE-gld${EMULATION_NAME}_open_dynamic_archive},
2513 ${LDEMUL_PLACE_ORPHAN-gld${EMULATION_NAME}_place_orphan},
2514 ${LDEMUL_SET_SYMBOLS-NULL},
2515 ${LDEMUL_PARSE_ARGS-NULL},
2516 gld${EMULATION_NAME}_add_options,
2517 gld${EMULATION_NAME}_handle_option,
2518 ${LDEMUL_UNRECOGNIZED_FILE-NULL},
2519 ${LDEMUL_LIST_OPTIONS-gld${EMULATION_NAME}_list_options},
2520 ${LDEMUL_RECOGNIZED_FILE-gld${EMULATION_NAME}_load_symbols},
2521 ${LDEMUL_FIND_POTENTIAL_LIBRARIES-NULL},
2522 ${LDEMUL_NEW_VERS_PATTERN-NULL},
2523 ${LDEMUL_EXTRA_MAP_FILE_TEXT-NULL}
2524};
2525EOF
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