775458c61812924393e4ed83121a2a89ffeeb440
[deliverable/binutils-gdb.git] / ld / emultempl / elf32.em
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.
5 test -z "${ELFSIZE}" && ELFSIZE=32
6 if [ -z "$MACHINE" ]; then
7 OUTPUT_ARCH=${ARCH}
8 else
9 OUTPUT_ARCH=${ARCH}:${MACHINE}
10 fi
11 fragment <<EOF
12 /* This file is is generated by a shell script. DO NOT EDIT! */
13
14 /* ${ELFSIZE} bit ELF emulation code for ${EMULATION_NAME}
15 Copyright 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
16 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
17 Written by Steve Chamberlain <sac@cygnus.com>
18 ELF support by Ian Lance Taylor <ian@cygnus.com>
19
20 This file is part of the GNU Binutils.
21
22 This program is free software; you can redistribute it and/or modify
23 it under the terms of the GNU General Public License as published by
24 the Free Software Foundation; either version 3 of the License, or
25 (at your option) any later version.
26
27 This program is distributed in the hope that it will be useful,
28 but WITHOUT ANY WARRANTY; without even the implied warranty of
29 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30 GNU General Public License for more details.
31
32 You should have received a copy of the GNU General Public License
33 along with this program; if not, write to the Free Software
34 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
35 MA 02110-1301, USA. */
36
37 #define TARGET_IS_${EMULATION_NAME}
38
39 #include "sysdep.h"
40 #include "bfd.h"
41 #include "libiberty.h"
42 #include "safe-ctype.h"
43 #include "getopt.h"
44 #include "md5.h"
45 #include "sha1.h"
46 #include <fcntl.h>
47
48 #include "bfdlink.h"
49
50 #include "ld.h"
51 #include "ldmain.h"
52 #include "ldmisc.h"
53 #include "ldexp.h"
54 #include "ldlang.h"
55 #include "ldfile.h"
56 #include "ldemul.h"
57 #include <ldgram.h>
58 #include "elf/common.h"
59 #include "elf-bfd.h"
60
61 /* Declare functions used by various EXTRA_EM_FILEs. */
62 static void gld${EMULATION_NAME}_before_parse (void);
63 static void gld${EMULATION_NAME}_after_open (void);
64 static void gld${EMULATION_NAME}_before_allocation (void);
65 static bfd_boolean gld${EMULATION_NAME}_place_orphan (asection *s);
66 static void gld${EMULATION_NAME}_finish (void);
67
68 EOF
69
70 if [ "x${USE_LIBPATH}" = xyes ] ; then
71 case ${target} in
72 *-*-linux-* | *-*-k*bsd*-*)
73 fragment <<EOF
74 #ifdef HAVE_GLOB
75 #include <glob.h>
76 #endif
77 EOF
78 ;;
79 esac
80 fi
81
82 # Import any needed special functions and/or overrides.
83 #
84 source_em ${srcdir}/emultempl/elf-generic.em
85 if test -n "$EXTRA_EM_FILE" ; then
86 source_em ${srcdir}/emultempl/${EXTRA_EM_FILE}.em
87 fi
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 #
95 if test x"$LDEMUL_BEFORE_PARSE" != xgld"$EMULATION_NAME"_before_parse; then
96 fragment <<EOF
97
98 static void
99 gld${EMULATION_NAME}_before_parse (void)
100 {
101 ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
102 config.dynamic_link = ${DYNAMIC_LINK-TRUE};
103 config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo TRUE ; else echo FALSE ; fi`;
104 }
105
106 EOF
107 fi
108
109 if test x"$LDEMUL_RECOGNIZED_FILE" != xgld"${EMULATION_NAME}"_load_symbols; then
110 fragment <<EOF
111 /* Handle as_needed DT_NEEDED. */
112
113 static bfd_boolean
114 gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *entry)
115 {
116 int class = 0;
117
118 /* Tell the ELF linker that we don't want the output file to have a
119 DT_NEEDED entry for this file, unless it is used to resolve
120 references in a regular object. */
121 if (entry->as_needed)
122 class = DYN_AS_NEEDED;
123
124 /* Tell the ELF linker that we don't want the output file to have a
125 DT_NEEDED entry for any dynamic library in DT_NEEDED tags from
126 this file at all. */
127 if (!entry->add_needed)
128 class |= DYN_NO_ADD_NEEDED;
129
130 if (entry->just_syms_flag
131 && (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) != 0)
132 einfo (_("%P%F: --just-symbols may not be used on DSO: %B\n"),
133 entry->the_bfd);
134
135 if (!class
136 || (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) == 0)
137 return FALSE;
138
139 bfd_elf_set_dyn_lib_class (entry->the_bfd, class);
140
141 /* Continue on with normal load_symbols processing. */
142 return FALSE;
143 }
144 EOF
145 fi
146
147 fragment <<EOF
148
149 /* These variables are required to pass information back and forth
150 between after_open and check_needed and stat_needed and vercheck. */
151
152 static struct bfd_link_needed_list *global_needed;
153 static struct stat global_stat;
154 static lang_input_statement_type *global_found;
155 static struct bfd_link_needed_list *global_vercheck_needed;
156 static bfd_boolean global_vercheck_failed;
157
158
159 /* On Linux, it's possible to have different versions of the same
160 shared library linked against different versions of libc. The
161 dynamic linker somehow tags which libc version to use in
162 /etc/ld.so.cache, and, based on the libc that it sees in the
163 executable, chooses which version of the shared library to use.
164
165 We try to do a similar check here by checking whether this shared
166 library needs any other shared libraries which may conflict with
167 libraries we have already included in the link. If it does, we
168 skip it, and try to find another shared library farther on down the
169 link path.
170
171 This is called via lang_for_each_input_file.
172 GLOBAL_VERCHECK_NEEDED is the list of objects needed by the object
173 which we are checking. This sets GLOBAL_VERCHECK_FAILED if we find
174 a conflicting version. */
175
176 static void
177 gld${EMULATION_NAME}_vercheck (lang_input_statement_type *s)
178 {
179 const char *soname;
180 struct bfd_link_needed_list *l;
181
182 if (global_vercheck_failed)
183 return;
184 if (s->the_bfd == NULL
185 || (bfd_get_file_flags (s->the_bfd) & DYNAMIC) == 0)
186 return;
187
188 soname = bfd_elf_get_dt_soname (s->the_bfd);
189 if (soname == NULL)
190 soname = lbasename (bfd_get_filename (s->the_bfd));
191
192 for (l = global_vercheck_needed; l != NULL; l = l->next)
193 {
194 const char *suffix;
195
196 if (strcmp (soname, l->name) == 0)
197 {
198 /* Probably can't happen, but it's an easy check. */
199 continue;
200 }
201
202 if (strchr (l->name, '/') != NULL)
203 continue;
204
205 suffix = strstr (l->name, ".so.");
206 if (suffix == NULL)
207 continue;
208
209 suffix += sizeof ".so." - 1;
210
211 if (strncmp (soname, l->name, suffix - l->name) == 0)
212 {
213 /* Here we know that S is a dynamic object FOO.SO.VER1, and
214 the object we are considering needs a dynamic object
215 FOO.SO.VER2, and VER1 and VER2 are different. This
216 appears to be a version mismatch, so we tell the caller
217 to try a different version of this library. */
218 global_vercheck_failed = TRUE;
219 return;
220 }
221 }
222 }
223
224
225 /* See if an input file matches a DT_NEEDED entry by running stat on
226 the file. */
227
228 static void
229 gld${EMULATION_NAME}_stat_needed (lang_input_statement_type *s)
230 {
231 struct stat st;
232 const char *suffix;
233 const char *soname;
234
235 if (global_found != NULL)
236 return;
237 if (s->the_bfd == NULL)
238 return;
239
240 /* If this input file was an as-needed entry, and wasn't found to be
241 needed at the stage it was linked, then don't say we have loaded it. */
242 if ((bfd_elf_get_dyn_lib_class (s->the_bfd) & DYN_AS_NEEDED) != 0)
243 return;
244
245 if (bfd_stat (s->the_bfd, &st) != 0)
246 {
247 einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd);
248 return;
249 }
250
251 /* Some operating systems, e.g. Windows, do not provide a meaningful
252 st_ino; they always set it to zero. (Windows does provide a
253 meaningful st_dev.) Do not indicate a duplicate library in that
254 case. While there is no guarantee that a system that provides
255 meaningful inode numbers will never set st_ino to zero, this is
256 merely an optimization, so we do not need to worry about false
257 negatives. */
258 if (st.st_dev == global_stat.st_dev
259 && st.st_ino == global_stat.st_ino
260 && st.st_ino != 0)
261 {
262 global_found = s;
263 return;
264 }
265
266 /* We issue a warning if it looks like we are including two
267 different versions of the same shared library. For example,
268 there may be a problem if -lc picks up libc.so.6 but some other
269 shared library has a DT_NEEDED entry of libc.so.5. This is a
270 heuristic test, and it will only work if the name looks like
271 NAME.so.VERSION. FIXME: Depending on file names is error-prone.
272 If we really want to issue warnings about mixing version numbers
273 of shared libraries, we need to find a better way. */
274
275 if (strchr (global_needed->name, '/') != NULL)
276 return;
277 suffix = strstr (global_needed->name, ".so.");
278 if (suffix == NULL)
279 return;
280 suffix += sizeof ".so." - 1;
281
282 soname = bfd_elf_get_dt_soname (s->the_bfd);
283 if (soname == NULL)
284 soname = lbasename (s->filename);
285
286 if (strncmp (soname, global_needed->name, suffix - global_needed->name) == 0)
287 einfo ("%P: warning: %s, needed by %B, may conflict with %s\n",
288 global_needed->name, global_needed->by, soname);
289 }
290
291 struct dt_needed
292 {
293 bfd *by;
294 const char *name;
295 };
296
297 /* This function is called for each possible name for a dynamic object
298 named by a DT_NEEDED entry. The FORCE parameter indicates whether
299 to skip the check for a conflicting version. */
300
301 static bfd_boolean
302 gld${EMULATION_NAME}_try_needed (struct dt_needed *needed,
303 int force)
304 {
305 bfd *abfd;
306 const char *name = needed->name;
307 const char *soname;
308 int class;
309
310 abfd = bfd_openr (name, bfd_get_target (output_bfd));
311 if (abfd == NULL)
312 return FALSE;
313 if (! bfd_check_format (abfd, bfd_object))
314 {
315 bfd_close (abfd);
316 return FALSE;
317 }
318 if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0)
319 {
320 bfd_close (abfd);
321 return FALSE;
322 }
323
324 /* For DT_NEEDED, they have to match. */
325 if (abfd->xvec != output_bfd->xvec)
326 {
327 bfd_close (abfd);
328 return FALSE;
329 }
330
331 /* Check whether this object would include any conflicting library
332 versions. If FORCE is set, then we skip this check; we use this
333 the second time around, if we couldn't find any compatible
334 instance of the shared library. */
335
336 if (! force)
337 {
338 struct bfd_link_needed_list *needed;
339
340 if (! bfd_elf_get_bfd_needed_list (abfd, &needed))
341 einfo ("%F%P:%B: bfd_elf_get_bfd_needed_list failed: %E\n", abfd);
342
343 if (needed != NULL)
344 {
345 global_vercheck_needed = needed;
346 global_vercheck_failed = FALSE;
347 lang_for_each_input_file (gld${EMULATION_NAME}_vercheck);
348 if (global_vercheck_failed)
349 {
350 bfd_close (abfd);
351 /* Return FALSE to force the caller to move on to try
352 another file on the search path. */
353 return FALSE;
354 }
355
356 /* But wait! It gets much worse. On Linux, if a shared
357 library does not use libc at all, we are supposed to skip
358 it the first time around in case we encounter a shared
359 library later on with the same name which does use the
360 version of libc that we want. This is much too horrible
361 to use on any system other than Linux. */
362
363 EOF
364 case ${target} in
365 *-*-linux-* | *-*-k*bsd*-*)
366 fragment <<EOF
367 {
368 struct bfd_link_needed_list *l;
369
370 for (l = needed; l != NULL; l = l->next)
371 if (CONST_STRNEQ (l->name, "libc.so"))
372 break;
373 if (l == NULL)
374 {
375 bfd_close (abfd);
376 return FALSE;
377 }
378 }
379
380 EOF
381 ;;
382 esac
383 fragment <<EOF
384 }
385 }
386
387 /* We've found a dynamic object matching the DT_NEEDED entry. */
388
389 /* We have already checked that there is no other input file of the
390 same name. We must now check again that we are not including the
391 same file twice. We need to do this because on many systems
392 libc.so is a symlink to, e.g., libc.so.1. The SONAME entry will
393 reference libc.so.1. If we have already included libc.so, we
394 don't want to include libc.so.1 if they are the same file, and we
395 can only check that using stat. */
396
397 if (bfd_stat (abfd, &global_stat) != 0)
398 einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd);
399
400 /* First strip off everything before the last '/'. */
401 soname = lbasename (abfd->filename);
402
403 if (trace_file_tries)
404 info_msg (_("found %s at %s\n"), soname, name);
405
406 global_found = NULL;
407 lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed);
408 if (global_found != NULL)
409 {
410 /* Return TRUE to indicate that we found the file, even though
411 we aren't going to do anything with it. */
412 return TRUE;
413 }
414
415 /* Specify the soname to use. */
416 bfd_elf_set_dt_needed_name (abfd, soname);
417
418 /* Tell the ELF linker that we don't want the output file to have a
419 DT_NEEDED entry for this file, unless it is used to resolve
420 references in a regular object. */
421 class = DYN_DT_NEEDED;
422
423 /* Tell the ELF linker that we don't want the output file to have a
424 DT_NEEDED entry for this file at all if the entry is from a file
425 with DYN_NO_ADD_NEEDED. */
426 if (needed->by != NULL
427 && (bfd_elf_get_dyn_lib_class (needed->by) & DYN_NO_ADD_NEEDED) != 0)
428 class |= DYN_NO_NEEDED | DYN_NO_ADD_NEEDED;
429
430 bfd_elf_set_dyn_lib_class (abfd, class);
431
432 /* Add this file into the symbol table. */
433 if (! bfd_link_add_symbols (abfd, &link_info))
434 einfo ("%F%B: could not read symbols: %E\n", abfd);
435
436 return TRUE;
437 }
438
439
440 /* Search for a needed file in a path. */
441
442 static bfd_boolean
443 gld${EMULATION_NAME}_search_needed (const char *path,
444 struct dt_needed *n, int force)
445 {
446 const char *s;
447 const char *name = n->name;
448 size_t len;
449 struct dt_needed needed;
450
451 if (name[0] == '/')
452 return gld${EMULATION_NAME}_try_needed (n, force);
453
454 if (path == NULL || *path == '\0')
455 return FALSE;
456
457 needed.by = n->by;
458 needed.name = n->name;
459
460 len = strlen (name);
461 while (1)
462 {
463 char *filename, *sset;
464
465 s = strchr (path, config.rpath_separator);
466 if (s == NULL)
467 s = path + strlen (path);
468
469 filename = (char *) xmalloc (s - path + len + 2);
470 if (s == path)
471 sset = filename;
472 else
473 {
474 memcpy (filename, path, s - path);
475 filename[s - path] = '/';
476 sset = filename + (s - path) + 1;
477 }
478 strcpy (sset, name);
479
480 needed.name = filename;
481 if (gld${EMULATION_NAME}_try_needed (&needed, force))
482 return TRUE;
483
484 free (filename);
485
486 if (*s == '\0')
487 break;
488 path = s + 1;
489 }
490
491 return FALSE;
492 }
493
494 EOF
495 if [ "x${USE_LIBPATH}" = xyes ] ; then
496 fragment <<EOF
497
498 /* Add the sysroot to every entry in a path separated by
499 config.rpath_separator. */
500
501 static char *
502 gld${EMULATION_NAME}_add_sysroot (const char *path)
503 {
504 int len, colons, i;
505 char *ret, *p;
506
507 len = strlen (path);
508 colons = 0;
509 i = 0;
510 while (path[i])
511 if (path[i++] == config.rpath_separator)
512 colons++;
513
514 if (path[i])
515 colons++;
516
517 len = len + (colons + 1) * strlen (ld_sysroot);
518 ret = xmalloc (len + 1);
519 strcpy (ret, ld_sysroot);
520 p = ret + strlen (ret);
521 i = 0;
522 while (path[i])
523 if (path[i] == config.rpath_separator)
524 {
525 *p++ = path[i++];
526 strcpy (p, ld_sysroot);
527 p = p + strlen (p);
528 }
529 else
530 *p++ = path[i++];
531
532 *p = 0;
533 return ret;
534 }
535
536 EOF
537 case ${target} in
538 *-*-freebsd* | *-*-dragonfly*)
539 fragment <<EOF
540 /* Read the system search path the FreeBSD way rather than the Linux way. */
541 #ifdef HAVE_ELF_HINTS_H
542 #include <elf-hints.h>
543 #else
544 #include "elf-hints-local.h"
545 #endif
546
547 static bfd_boolean
548 gld${EMULATION_NAME}_check_ld_elf_hints (const char *name, int force)
549 {
550 static bfd_boolean initialized;
551 static char *ld_elf_hints;
552 struct dt_needed needed;
553
554 if (!initialized)
555 {
556 FILE *f;
557 char *tmppath;
558
559 tmppath = concat (ld_sysroot, _PATH_ELF_HINTS, NULL);
560 f = fopen (tmppath, FOPEN_RB);
561 free (tmppath);
562 if (f != NULL)
563 {
564 struct elfhints_hdr hdr;
565
566 if (fread (&hdr, 1, sizeof (hdr), f) == sizeof (hdr)
567 && hdr.magic == ELFHINTS_MAGIC
568 && hdr.version == 1)
569 {
570 if (fseek (f, hdr.strtab + hdr.dirlist, SEEK_SET) != -1)
571 {
572 char *b;
573
574 b = xmalloc (hdr.dirlistlen + 1);
575 if (fread (b, 1, hdr.dirlistlen + 1, f) ==
576 hdr.dirlistlen + 1)
577 ld_elf_hints = gld${EMULATION_NAME}_add_sysroot (b);
578
579 free (b);
580 }
581 }
582 fclose (f);
583 }
584
585 initialized = TRUE;
586 }
587
588 if (ld_elf_hints == NULL)
589 return FALSE;
590
591 needed.by = NULL;
592 needed.name = name;
593 return gld${EMULATION_NAME}_search_needed (ld_elf_hints, & needed,
594 force);
595 }
596 EOF
597 # FreeBSD
598 ;;
599
600 *-*-linux-* | *-*-k*bsd*-*)
601 fragment <<EOF
602 /* For a native linker, check the file /etc/ld.so.conf for directories
603 in which we may find shared libraries. /etc/ld.so.conf is really
604 only meaningful on Linux. */
605
606 struct gld${EMULATION_NAME}_ld_so_conf
607 {
608 char *path;
609 size_t len, alloc;
610 };
611
612 static bfd_boolean
613 gld${EMULATION_NAME}_parse_ld_so_conf
614 (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename);
615
616 static void
617 gld${EMULATION_NAME}_parse_ld_so_conf_include
618 (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename,
619 const char *pattern)
620 {
621 char *newp = NULL;
622 #ifdef HAVE_GLOB
623 glob_t gl;
624 #endif
625
626 if (pattern[0] != '/')
627 {
628 char *p = strrchr (filename, '/');
629 size_t patlen = strlen (pattern) + 1;
630
631 newp = xmalloc (p - filename + 1 + patlen);
632 memcpy (newp, filename, p - filename + 1);
633 memcpy (newp + (p - filename + 1), pattern, patlen);
634 pattern = newp;
635 }
636
637 #ifdef HAVE_GLOB
638 if (glob (pattern, 0, NULL, &gl) == 0)
639 {
640 size_t i;
641
642 for (i = 0; i < gl.gl_pathc; ++i)
643 gld${EMULATION_NAME}_parse_ld_so_conf (info, gl.gl_pathv[i]);
644 globfree (&gl);
645 }
646 #else
647 /* If we do not have glob, treat the pattern as a literal filename. */
648 gld${EMULATION_NAME}_parse_ld_so_conf (info, pattern);
649 #endif
650
651 if (newp)
652 free (newp);
653 }
654
655 static bfd_boolean
656 gld${EMULATION_NAME}_parse_ld_so_conf
657 (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename)
658 {
659 FILE *f = fopen (filename, FOPEN_RT);
660 char *line;
661 size_t linelen;
662
663 if (f == NULL)
664 return FALSE;
665
666 linelen = 256;
667 line = xmalloc (linelen);
668 do
669 {
670 char *p = line, *q;
671
672 /* Normally this would use getline(3), but we need to be portable. */
673 while ((q = fgets (p, linelen - (p - line), f)) != NULL
674 && strlen (q) == linelen - (p - line) - 1
675 && line[linelen - 2] != '\n')
676 {
677 line = xrealloc (line, 2 * linelen);
678 p = line + linelen - 1;
679 linelen += linelen;
680 }
681
682 if (q == NULL && p == line)
683 break;
684
685 p = strchr (line, '\n');
686 if (p)
687 *p = '\0';
688
689 /* Because the file format does not know any form of quoting we
690 can search forward for the next '#' character and if found
691 make it terminating the line. */
692 p = strchr (line, '#');
693 if (p)
694 *p = '\0';
695
696 /* Remove leading whitespace. NUL is no whitespace character. */
697 p = line;
698 while (*p == ' ' || *p == '\f' || *p == '\r' || *p == '\t' || *p == '\v')
699 ++p;
700
701 /* If the line is blank it is ignored. */
702 if (p[0] == '\0')
703 continue;
704
705 if (CONST_STRNEQ (p, "include") && (p[7] == ' ' || p[7] == '\t'))
706 {
707 char *dir, c;
708 p += 8;
709 do
710 {
711 while (*p == ' ' || *p == '\t')
712 ++p;
713
714 if (*p == '\0')
715 break;
716
717 dir = p;
718
719 while (*p != ' ' && *p != '\t' && *p)
720 ++p;
721
722 c = *p;
723 *p++ = '\0';
724 if (dir[0] != '\0')
725 gld${EMULATION_NAME}_parse_ld_so_conf_include (info, filename,
726 dir);
727 }
728 while (c != '\0');
729 }
730 else
731 {
732 char *dir = p;
733 while (*p && *p != '=' && *p != ' ' && *p != '\t' && *p != '\f'
734 && *p != '\r' && *p != '\v')
735 ++p;
736
737 while (p != dir && p[-1] == '/')
738 --p;
739 if (info->path == NULL)
740 {
741 info->alloc = p - dir + 1 + 256;
742 info->path = xmalloc (info->alloc);
743 info->len = 0;
744 }
745 else
746 {
747 if (info->len + 1 + (p - dir) >= info->alloc)
748 {
749 info->alloc += p - dir + 256;
750 info->path = xrealloc (info->path, info->alloc);
751 }
752 info->path[info->len++] = config.rpath_separator;
753 }
754 memcpy (info->path + info->len, dir, p - dir);
755 info->len += p - dir;
756 info->path[info->len] = '\0';
757 }
758 }
759 while (! feof (f));
760 free (line);
761 fclose (f);
762 return TRUE;
763 }
764
765 static bfd_boolean
766 gld${EMULATION_NAME}_check_ld_so_conf (const char *name, int force)
767 {
768 static bfd_boolean initialized;
769 static char *ld_so_conf;
770 struct dt_needed needed;
771
772 if (! initialized)
773 {
774 char *tmppath;
775 struct gld${EMULATION_NAME}_ld_so_conf info;
776
777 info.path = NULL;
778 info.len = info.alloc = 0;
779 tmppath = concat (ld_sysroot, "${prefix}/etc/ld.so.conf", NULL);
780 if (!gld${EMULATION_NAME}_parse_ld_so_conf (&info, tmppath))
781 {
782 free (tmppath);
783 tmppath = concat (ld_sysroot, "/etc/ld.so.conf", NULL);
784 gld${EMULATION_NAME}_parse_ld_so_conf (&info, tmppath);
785 }
786 free (tmppath);
787
788 if (info.path)
789 {
790 char *d = gld${EMULATION_NAME}_add_sysroot (info.path);
791 free (info.path);
792 ld_so_conf = d;
793 }
794 initialized = TRUE;
795 }
796
797 if (ld_so_conf == NULL)
798 return FALSE;
799
800
801 needed.by = NULL;
802 needed.name = name;
803 return gld${EMULATION_NAME}_search_needed (ld_so_conf, &needed, force);
804 }
805
806 EOF
807 # Linux
808 ;;
809 esac
810 fi
811 fragment <<EOF
812
813 /* See if an input file matches a DT_NEEDED entry by name. */
814
815 static void
816 gld${EMULATION_NAME}_check_needed (lang_input_statement_type *s)
817 {
818 const char *soname;
819
820 /* Stop looking if we've found a loaded lib. */
821 if (global_found != NULL
822 && (bfd_elf_get_dyn_lib_class (global_found->the_bfd)
823 & DYN_AS_NEEDED) == 0)
824 return;
825
826 if (s->filename == NULL || s->the_bfd == NULL)
827 return;
828
829 /* Don't look for a second non-loaded as-needed lib. */
830 if (global_found != NULL
831 && (bfd_elf_get_dyn_lib_class (s->the_bfd) & DYN_AS_NEEDED) != 0)
832 return;
833
834 if (strcmp (s->filename, global_needed->name) == 0)
835 {
836 global_found = s;
837 return;
838 }
839
840 if (s->search_dirs_flag)
841 {
842 const char *f = strrchr (s->filename, '/');
843 if (f != NULL
844 && strcmp (f + 1, global_needed->name) == 0)
845 {
846 global_found = s;
847 return;
848 }
849 }
850
851 soname = bfd_elf_get_dt_soname (s->the_bfd);
852 if (soname != NULL
853 && strcmp (soname, global_needed->name) == 0)
854 {
855 global_found = s;
856 return;
857 }
858 }
859
860 EOF
861
862 if test x"$LDEMUL_AFTER_OPEN" != xgld"$EMULATION_NAME"_after_open; then
863 fragment <<EOF
864
865 static bfd_size_type
866 gld${EMULATION_NAME}_id_note_section_size (bfd *abfd,
867 struct bfd_link_info *link_info)
868 {
869 const char *style = link_info->emit_note_gnu_build_id;
870 bfd_size_type size;
871
872 abfd = abfd;
873
874 size = offsetof (Elf_External_Note, name[sizeof "GNU"]);
875 size = (size + 3) & -(bfd_size_type) 4;
876
877 if (!strcmp (style, "md5") || !strcmp (style, "uuid"))
878 size += 128 / 8;
879 else if (!strcmp (style, "sha1"))
880 size += 160 / 8;
881 else if (!strncmp (style, "0x", 2))
882 {
883 /* ID is in string form (hex). Convert to bits. */
884 const char *id = style + 2;
885 do
886 {
887 if (ISXDIGIT (id[0]) && ISXDIGIT (id[1]))
888 {
889 ++size;
890 id += 2;
891 }
892 else if (*id == '-' || *id == ':')
893 ++id;
894 else
895 {
896 size = 0;
897 break;
898 }
899 } while (*id != '\0');
900 }
901 else
902 size = 0;
903
904 return size;
905 }
906
907 static unsigned char
908 read_hex (const char xdigit)
909 {
910 if (ISDIGIT (xdigit))
911 return xdigit - '0';
912 if (ISUPPER (xdigit))
913 return xdigit - 'A' + 0xa;
914 if (ISLOWER (xdigit))
915 return xdigit - 'a' + 0xa;
916 abort ();
917 return 0;
918 }
919
920 struct build_id_info
921 {
922 const char *style;
923 asection *sec;
924 };
925
926 static bfd_boolean
927 gld${EMULATION_NAME}_write_build_id_section (bfd *abfd)
928 {
929 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
930 struct build_id_info *info =
931 elf_tdata (abfd)->after_write_object_contents_info;
932 asection *asec;
933 Elf_Internal_Shdr *i_shdr;
934 unsigned char *contents, *id_bits;
935 bfd_size_type size;
936 Elf_External_Note *e_note;
937
938 asec = info->sec;
939 if (bfd_is_abs_section (asec->output_section))
940 {
941 einfo (_("%P: warning: .note.gnu.build-id section discarded,"
942 " --build-id ignored.\n"));
943 return TRUE;
944 }
945 i_shdr = &elf_section_data (asec->output_section)->this_hdr;
946
947 if (i_shdr->contents == NULL)
948 {
949 if (asec->contents == NULL)
950 asec->contents = xmalloc (asec->size);
951 contents = asec->contents;
952 }
953 else
954 contents = i_shdr->contents + asec->output_offset;
955
956 e_note = (void *) contents;
957 size = offsetof (Elf_External_Note, name[sizeof "GNU"]);
958 size = (size + 3) & -(bfd_size_type) 4;
959 id_bits = contents + size;
960 size = asec->size - size;
961
962 bfd_h_put_32 (abfd, sizeof "GNU", &e_note->namesz);
963 bfd_h_put_32 (abfd, size, &e_note->descsz);
964 bfd_h_put_32 (abfd, NT_GNU_BUILD_ID, &e_note->type);
965 memcpy (e_note->name, "GNU", sizeof "GNU");
966
967 if (!strcmp (info->style, "md5"))
968 {
969 struct md5_ctx ctx;
970 md5_init_ctx (&ctx);
971 if (bed->s->checksum_contents (abfd,
972 (void (*) (const void *, size_t, void *))
973 &md5_process_bytes,
974 &ctx))
975 md5_finish_ctx (&ctx, id_bits);
976 else
977 return FALSE;
978 }
979 else if (!strcmp (info->style, "sha1"))
980 {
981 struct sha1_ctx ctx;
982 sha1_init_ctx (&ctx);
983 if (bed->s->checksum_contents (abfd,
984 (void (*) (const void *, size_t, void *))
985 &sha1_process_bytes,
986 &ctx))
987 sha1_finish_ctx (&ctx, id_bits);
988 else
989 return FALSE;
990 }
991 else if (!strcmp (info->style, "uuid"))
992 {
993 int n;
994 int fd = open ("/dev/urandom", O_RDONLY);
995 if (fd < 0)
996 return FALSE;
997 n = read (fd, id_bits, size);
998 close (fd);
999 if (n < (int) size)
1000 return FALSE;
1001 }
1002 else if (!strncmp (info->style, "0x", 2))
1003 {
1004 /* ID is in string form (hex). Convert to bits. */
1005 const char *id = info->style + 2;
1006 size_t n = 0;
1007 do
1008 {
1009 if (ISXDIGIT (id[0]) && ISXDIGIT (id[1]))
1010 {
1011 id_bits[n] = read_hex (*id++) << 4;
1012 id_bits[n++] |= read_hex (*id++);
1013 }
1014 else if (*id == '-' || *id == ':')
1015 ++id;
1016 else
1017 abort (); /* Should have been validated earlier. */
1018 } while (*id != '\0');
1019 }
1020 else
1021 abort (); /* Should have been validated earlier. */
1022
1023 size = asec->size;
1024 return (bfd_seek (abfd,
1025 i_shdr->sh_offset + asec->output_offset, SEEK_SET) == 0
1026 && bfd_bwrite (contents, size, abfd) == size);
1027 }
1028
1029
1030 /* This is called after all the input files have been opened. */
1031
1032 static void
1033 gld${EMULATION_NAME}_after_open (void)
1034 {
1035 struct bfd_link_needed_list *needed, *l;
1036 struct elf_link_hash_table *htab;
1037
1038 htab = elf_hash_table (&link_info);
1039 if (!is_elf_hash_table (htab))
1040 return;
1041
1042 if (link_info.emit_note_gnu_build_id)
1043 {
1044 bfd *abfd;
1045 asection *s;
1046 bfd_size_type size;
1047
1048 abfd = link_info.input_bfds;
1049
1050 size = gld${EMULATION_NAME}_id_note_section_size (abfd, &link_info);
1051 if (size == 0)
1052 {
1053 einfo ("%P: warning: unrecognized --build-id style ignored.\n");
1054 free (link_info.emit_note_gnu_build_id);
1055 link_info.emit_note_gnu_build_id = NULL;
1056 }
1057 else
1058 {
1059 s = bfd_make_section_with_flags (abfd, ".note.gnu.build-id",
1060 SEC_ALLOC | SEC_LOAD
1061 | SEC_IN_MEMORY | SEC_LINKER_CREATED
1062 | SEC_READONLY | SEC_DATA);
1063 if (s != NULL && bfd_set_section_alignment (abfd, s, 2))
1064 {
1065 struct elf_obj_tdata *t = elf_tdata (output_bfd);
1066 struct build_id_info *b = xmalloc (sizeof *b);
1067 b->style = link_info.emit_note_gnu_build_id;
1068 b->sec = s;
1069 elf_section_type (s) = SHT_NOTE;
1070 s->size = size;
1071 t->after_write_object_contents
1072 = &gld${EMULATION_NAME}_write_build_id_section;
1073 t->after_write_object_contents_info = b;
1074 }
1075 else
1076 {
1077 einfo ("%P: warning: Cannot create .note.gnu.build-id section,"
1078 " --build-id ignored.\n");
1079 free (link_info.emit_note_gnu_build_id);
1080 link_info.emit_note_gnu_build_id = NULL;
1081 }
1082 }
1083 }
1084
1085 if (link_info.relocatable)
1086 return;
1087
1088 if (link_info.eh_frame_hdr
1089 && !link_info.traditional_format)
1090 {
1091 bfd *abfd;
1092 asection *s;
1093
1094 for (abfd = link_info.input_bfds; abfd; abfd = abfd->link_next)
1095 {
1096 s = bfd_get_section_by_name (abfd, ".eh_frame");
1097 if (s && s->size > 8 && !bfd_is_abs_section (s->output_section))
1098 break;
1099 }
1100 if (abfd)
1101 {
1102 const struct elf_backend_data *bed;
1103
1104 bed = get_elf_backend_data (abfd);
1105 s = bfd_make_section_with_flags (abfd, ".eh_frame_hdr",
1106 bed->dynamic_sec_flags
1107 | SEC_READONLY);
1108 if (s != NULL
1109 && bfd_set_section_alignment (abfd, s, 2))
1110 htab->eh_info.hdr_sec = s;
1111 else
1112 einfo ("%P: warning: Cannot create .eh_frame_hdr section,"
1113 " --eh-frame-hdr ignored.\n");
1114 }
1115 }
1116
1117 /* Get the list of files which appear in DT_NEEDED entries in
1118 dynamic objects included in the link (often there will be none).
1119 For each such file, we want to track down the corresponding
1120 library, and include the symbol table in the link. This is what
1121 the runtime dynamic linker will do. Tracking the files down here
1122 permits one dynamic object to include another without requiring
1123 special action by the person doing the link. Note that the
1124 needed list can actually grow while we are stepping through this
1125 loop. */
1126 if (!link_info.executable)
1127 return;
1128 needed = bfd_elf_get_needed_list (output_bfd, &link_info);
1129 for (l = needed; l != NULL; l = l->next)
1130 {
1131 struct bfd_link_needed_list *ll;
1132 struct dt_needed n, nn;
1133 int force;
1134
1135 /* If the lib that needs this one was --as-needed and wasn't
1136 found to be needed, then this lib isn't needed either. */
1137 if (l->by != NULL
1138 && (bfd_elf_get_dyn_lib_class (l->by) & DYN_AS_NEEDED) != 0)
1139 continue;
1140
1141 /* If we've already seen this file, skip it. */
1142 for (ll = needed; ll != l; ll = ll->next)
1143 if ((ll->by == NULL
1144 || (bfd_elf_get_dyn_lib_class (ll->by) & DYN_AS_NEEDED) == 0)
1145 && strcmp (ll->name, l->name) == 0)
1146 break;
1147 if (ll != l)
1148 continue;
1149
1150 /* See if this file was included in the link explicitly. */
1151 global_needed = l;
1152 global_found = NULL;
1153 lang_for_each_input_file (gld${EMULATION_NAME}_check_needed);
1154 if (global_found != NULL
1155 && (bfd_elf_get_dyn_lib_class (global_found->the_bfd)
1156 & DYN_AS_NEEDED) == 0)
1157 continue;
1158
1159 n.by = l->by;
1160 n.name = l->name;
1161 nn.by = l->by;
1162 if (trace_file_tries)
1163 info_msg (_("%s needed by %B\n"), l->name, l->by);
1164
1165 /* As-needed libs specified on the command line (or linker script)
1166 take priority over libs found in search dirs. */
1167 if (global_found != NULL)
1168 {
1169 nn.name = global_found->filename;
1170 if (gld${EMULATION_NAME}_try_needed (&nn, TRUE))
1171 continue;
1172 }
1173
1174 /* We need to find this file and include the symbol table. We
1175 want to search for the file in the same way that the dynamic
1176 linker will search. That means that we want to use
1177 rpath_link, rpath, then the environment variable
1178 LD_LIBRARY_PATH (native only), then the DT_RPATH/DT_RUNPATH
1179 entries (native only), then the linker script LIB_SEARCH_DIRS.
1180 We do not search using the -L arguments.
1181
1182 We search twice. The first time, we skip objects which may
1183 introduce version mismatches. The second time, we force
1184 their use. See gld${EMULATION_NAME}_vercheck comment. */
1185 for (force = 0; force < 2; force++)
1186 {
1187 size_t len;
1188 search_dirs_type *search;
1189 EOF
1190 if [ "x${NATIVE}" = xyes ] ; then
1191 fragment <<EOF
1192 const char *lib_path;
1193 EOF
1194 fi
1195 if [ "x${USE_LIBPATH}" = xyes ] ; then
1196 fragment <<EOF
1197 struct bfd_link_needed_list *rp;
1198 int found;
1199 EOF
1200 fi
1201 fragment <<EOF
1202
1203 if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link,
1204 &n, force))
1205 break;
1206 EOF
1207 if [ "x${USE_LIBPATH}" = xyes ] ; then
1208 fragment <<EOF
1209 if (gld${EMULATION_NAME}_search_needed (command_line.rpath,
1210 &n, force))
1211 break;
1212 EOF
1213 fi
1214 if [ "x${NATIVE}" = xyes ] ; then
1215 fragment <<EOF
1216 if (command_line.rpath_link == NULL
1217 && command_line.rpath == NULL)
1218 {
1219 lib_path = (const char *) getenv ("LD_RUN_PATH");
1220 if (gld${EMULATION_NAME}_search_needed (lib_path, &n,
1221 force))
1222 break;
1223 }
1224 lib_path = (const char *) getenv ("LD_LIBRARY_PATH");
1225 if (gld${EMULATION_NAME}_search_needed (lib_path, &n, force))
1226 break;
1227 EOF
1228 fi
1229 if [ "x${USE_LIBPATH}" = xyes ] ; then
1230 fragment <<EOF
1231 found = 0;
1232 rp = bfd_elf_get_runpath_list (output_bfd, &link_info);
1233 for (; !found && rp != NULL; rp = rp->next)
1234 {
1235 char *tmpname = gld${EMULATION_NAME}_add_sysroot (rp->name);
1236 found = (rp->by == l->by
1237 && gld${EMULATION_NAME}_search_needed (tmpname,
1238 &n,
1239 force));
1240 free (tmpname);
1241 }
1242 if (found)
1243 break;
1244
1245 EOF
1246 fi
1247 if [ "x${USE_LIBPATH}" = xyes ] ; then
1248 case ${target} in
1249 *-*-freebsd* | *-*-dragonfly*)
1250 fragment <<EOF
1251 if (gld${EMULATION_NAME}_check_ld_elf_hints (l->name, force))
1252 break;
1253 EOF
1254 # FreeBSD
1255 ;;
1256
1257 *-*-linux-* | *-*-k*bsd*-*)
1258 # Linux
1259 fragment <<EOF
1260 if (gld${EMULATION_NAME}_check_ld_so_conf (l->name, force))
1261 break;
1262
1263 EOF
1264 ;;
1265 esac
1266 fi
1267 fragment <<EOF
1268 len = strlen (l->name);
1269 for (search = search_head; search != NULL; search = search->next)
1270 {
1271 char *filename;
1272
1273 if (search->cmdline)
1274 continue;
1275 filename = (char *) xmalloc (strlen (search->name) + len + 2);
1276 sprintf (filename, "%s/%s", search->name, l->name);
1277 nn.name = filename;
1278 if (gld${EMULATION_NAME}_try_needed (&nn, force))
1279 break;
1280 free (filename);
1281 }
1282 if (search != NULL)
1283 break;
1284 EOF
1285 fragment <<EOF
1286 }
1287
1288 if (force < 2)
1289 continue;
1290
1291 einfo ("%P: warning: %s, needed by %B, not found (try using -rpath or -rpath-link)\n",
1292 l->name, l->by);
1293 }
1294 }
1295
1296 EOF
1297 fi
1298
1299 fragment <<EOF
1300
1301 /* Look through an expression for an assignment statement. */
1302
1303 static void
1304 gld${EMULATION_NAME}_find_exp_assignment (etree_type *exp)
1305 {
1306 bfd_boolean provide = FALSE;
1307
1308 switch (exp->type.node_class)
1309 {
1310 case etree_provide:
1311 provide = TRUE;
1312 /* Fall thru */
1313 case etree_assign:
1314 /* We call record_link_assignment even if the symbol is defined.
1315 This is because if it is defined by a dynamic object, we
1316 actually want to use the value defined by the linker script,
1317 not the value from the dynamic object (because we are setting
1318 symbols like etext). If the symbol is defined by a regular
1319 object, then, as it happens, calling record_link_assignment
1320 will do no harm. */
1321 if (strcmp (exp->assign.dst, ".") != 0)
1322 {
1323 if (!bfd_elf_record_link_assignment (output_bfd, &link_info,
1324 exp->assign.dst, provide,
1325 exp->assign.hidden))
1326 einfo ("%P%F: failed to record assignment to %s: %E\n",
1327 exp->assign.dst);
1328 }
1329 gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src);
1330 break;
1331
1332 case etree_binary:
1333 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs);
1334 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs);
1335 break;
1336
1337 case etree_trinary:
1338 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond);
1339 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs);
1340 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs);
1341 break;
1342
1343 case etree_unary:
1344 gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child);
1345 break;
1346
1347 default:
1348 break;
1349 }
1350 }
1351
1352
1353 /* This is called by the before_allocation routine via
1354 lang_for_each_statement. It locates any assignment statements, and
1355 tells the ELF backend about them, in case they are assignments to
1356 symbols which are referred to by dynamic objects. */
1357
1358 static void
1359 gld${EMULATION_NAME}_find_statement_assignment (lang_statement_union_type *s)
1360 {
1361 if (s->header.type == lang_assignment_statement_enum)
1362 gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp);
1363 }
1364
1365 EOF
1366
1367 if test x"$LDEMUL_BEFORE_ALLOCATION" != xgld"$EMULATION_NAME"_before_allocation; then
1368 if test x"${ELF_INTERPRETER_NAME+set}" = xset; then
1369 ELF_INTERPRETER_SET_DEFAULT="
1370 if (sinterp != NULL)
1371 {
1372 sinterp->contents = (unsigned char *) ${ELF_INTERPRETER_NAME};
1373 sinterp->size = strlen ((char *) sinterp->contents) + 1;
1374 }
1375
1376 "
1377 else
1378 ELF_INTERPRETER_SET_DEFAULT=
1379 fi
1380 fragment <<EOF
1381
1382 /* This is called after the sections have been attached to output
1383 sections, but before any sizes or addresses have been set. */
1384
1385 static void
1386 gld${EMULATION_NAME}_before_allocation (void)
1387 {
1388 const char *rpath;
1389 asection *sinterp;
1390
1391 if (link_info.hash->type == bfd_link_elf_hash_table)
1392 _bfd_elf_tls_setup (output_bfd, &link_info);
1393
1394 /* If we are going to make any variable assignments, we need to let
1395 the ELF backend know about them in case the variables are
1396 referred to by dynamic objects. */
1397 lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment);
1398
1399 /* Let the ELF backend work out the sizes of any sections required
1400 by dynamic linking. */
1401 rpath = command_line.rpath;
1402 if (rpath == NULL)
1403 rpath = (const char *) getenv ("LD_RUN_PATH");
1404 if (! (bfd_elf_size_dynamic_sections
1405 (output_bfd, command_line.soname, rpath,
1406 command_line.filter_shlib,
1407 (const char * const *) command_line.auxiliary_filters,
1408 &link_info, &sinterp, lang_elf_version_info)))
1409 einfo ("%P%F: failed to set dynamic section sizes: %E\n");
1410
1411 ${ELF_INTERPRETER_SET_DEFAULT}
1412 /* Let the user override the dynamic linker we are using. */
1413 if (command_line.interpreter != NULL
1414 && sinterp != NULL)
1415 {
1416 sinterp->contents = (bfd_byte *) command_line.interpreter;
1417 sinterp->size = strlen (command_line.interpreter) + 1;
1418 }
1419
1420 /* Look for any sections named .gnu.warning. As a GNU extensions,
1421 we treat such sections as containing warning messages. We print
1422 out the warning message, and then zero out the section size so
1423 that it does not get copied into the output file. */
1424
1425 {
1426 LANG_FOR_EACH_INPUT_STATEMENT (is)
1427 {
1428 asection *s;
1429 bfd_size_type sz;
1430 char *msg;
1431 bfd_boolean ret;
1432
1433 if (is->just_syms_flag)
1434 continue;
1435
1436 s = bfd_get_section_by_name (is->the_bfd, ".gnu.warning");
1437 if (s == NULL)
1438 continue;
1439
1440 sz = s->size;
1441 msg = xmalloc ((size_t) (sz + 1));
1442 if (! bfd_get_section_contents (is->the_bfd, s, msg,
1443 (file_ptr) 0, sz))
1444 einfo ("%F%B: Can't read contents of section .gnu.warning: %E\n",
1445 is->the_bfd);
1446 msg[sz] = '\0';
1447 ret = link_info.callbacks->warning (&link_info, msg,
1448 (const char *) NULL,
1449 is->the_bfd, (asection *) NULL,
1450 (bfd_vma) 0);
1451 ASSERT (ret);
1452 free (msg);
1453
1454 /* Clobber the section size, so that we don't waste space
1455 copying the warning into the output file. If we've already
1456 sized the output section, adjust its size. The adjustment
1457 is on rawsize because targets that size sections early will
1458 have called lang_reset_memory_regions after sizing. */
1459 if (s->output_section != NULL
1460 && s->output_section->rawsize >= s->size)
1461 s->output_section->rawsize -= s->size;
1462
1463 s->size = 0;
1464
1465 /* Also set SEC_EXCLUDE, so that local symbols defined in the
1466 warning section don't get copied to the output. */
1467 s->flags |= SEC_EXCLUDE | SEC_KEEP;
1468 }
1469 }
1470
1471 before_allocation_default ();
1472
1473 if (!bfd_elf_size_dynsym_hash_dynstr (output_bfd, &link_info))
1474 einfo ("%P%F: failed to set dynamic section sizes: %E\n");
1475 }
1476
1477 EOF
1478 fi
1479
1480 if test x"$LDEMUL_OPEN_DYNAMIC_ARCHIVE" != xgld"$EMULATION_NAME"_open_dynamic_archive; then
1481 fragment <<EOF
1482
1483 /* Try to open a dynamic archive. This is where we know that ELF
1484 dynamic libraries have an extension of .so (or .sl on oddball systems
1485 like hpux). */
1486
1487 static bfd_boolean
1488 gld${EMULATION_NAME}_open_dynamic_archive
1489 (const char *arch, search_dirs_type *search, lang_input_statement_type *entry)
1490 {
1491 const char *filename;
1492 char *string;
1493
1494 if (! entry->is_archive)
1495 return FALSE;
1496
1497 filename = entry->filename;
1498
1499 /* This allocates a few bytes too many when EXTRA_SHLIB_EXTENSION
1500 is defined, but it does not seem worth the headache to optimize
1501 away those two bytes of space. */
1502 string = (char *) xmalloc (strlen (search->name)
1503 + strlen (filename)
1504 + strlen (arch)
1505 #ifdef EXTRA_SHLIB_EXTENSION
1506 + strlen (EXTRA_SHLIB_EXTENSION)
1507 #endif
1508 + sizeof "/lib.so");
1509
1510 sprintf (string, "%s/lib%s%s.so", search->name, filename, arch);
1511
1512 #ifdef EXTRA_SHLIB_EXTENSION
1513 /* Try the .so extension first. If that fails build a new filename
1514 using EXTRA_SHLIB_EXTENSION. */
1515 if (! ldfile_try_open_bfd (string, entry))
1516 sprintf (string, "%s/lib%s%s%s", search->name,
1517 filename, arch, EXTRA_SHLIB_EXTENSION);
1518 #endif
1519
1520 if (! ldfile_try_open_bfd (string, entry))
1521 {
1522 free (string);
1523 return FALSE;
1524 }
1525
1526 entry->filename = string;
1527
1528 /* We have found a dynamic object to include in the link. The ELF
1529 backend linker will create a DT_NEEDED entry in the .dynamic
1530 section naming this file. If this file includes a DT_SONAME
1531 entry, it will be used. Otherwise, the ELF linker will just use
1532 the name of the file. For an archive found by searching, like
1533 this one, the DT_NEEDED entry should consist of just the name of
1534 the file, without the path information used to find it. Note
1535 that we only need to do this if we have a dynamic object; an
1536 archive will never be referenced by a DT_NEEDED entry.
1537
1538 FIXME: This approach--using bfd_elf_set_dt_needed_name--is not
1539 very pretty. I haven't been able to think of anything that is
1540 pretty, though. */
1541 if (bfd_check_format (entry->the_bfd, bfd_object)
1542 && (entry->the_bfd->flags & DYNAMIC) != 0)
1543 {
1544 ASSERT (entry->is_archive && entry->search_dirs_flag);
1545
1546 /* Rather than duplicating the logic above. Just use the
1547 filename we recorded earlier. */
1548
1549 filename = lbasename (entry->filename);
1550 bfd_elf_set_dt_needed_name (entry->the_bfd, filename);
1551 }
1552
1553 return TRUE;
1554 }
1555
1556 EOF
1557 fi
1558
1559 if test x"$LDEMUL_PLACE_ORPHAN" != xgld"$EMULATION_NAME"_place_orphan; then
1560 fragment <<EOF
1561
1562 /* A variant of lang_output_section_find used by place_orphan. */
1563
1564 static lang_output_section_statement_type *
1565 output_rel_find (asection *sec, int isdyn)
1566 {
1567 lang_output_section_statement_type *lookup;
1568 lang_output_section_statement_type *last = NULL;
1569 lang_output_section_statement_type *last_alloc = NULL;
1570 lang_output_section_statement_type *last_ro_alloc = NULL;
1571 lang_output_section_statement_type *last_rel = NULL;
1572 lang_output_section_statement_type *last_rel_alloc = NULL;
1573 int rela = sec->name[4] == 'a';
1574
1575 for (lookup = &lang_output_section_statement.head->output_section_statement;
1576 lookup != NULL;
1577 lookup = lookup->next)
1578 {
1579 if (lookup->constraint != -1
1580 && CONST_STRNEQ (lookup->name, ".rel"))
1581 {
1582 int lookrela = lookup->name[4] == 'a';
1583
1584 /* .rel.dyn must come before all other reloc sections, to suit
1585 GNU ld.so. */
1586 if (isdyn)
1587 break;
1588
1589 /* Don't place after .rel.plt as doing so results in wrong
1590 dynamic tags. */
1591 if (strcmp (".plt", lookup->name + 4 + lookrela) == 0)
1592 break;
1593
1594 if (rela == lookrela || last_rel == NULL)
1595 last_rel = lookup;
1596 if ((rela == lookrela || last_rel_alloc == NULL)
1597 && lookup->bfd_section != NULL
1598 && (lookup->bfd_section->flags & SEC_ALLOC) != 0)
1599 last_rel_alloc = lookup;
1600 }
1601
1602 last = lookup;
1603 if (lookup->bfd_section != NULL
1604 && (lookup->bfd_section->flags & SEC_ALLOC) != 0)
1605 {
1606 last_alloc = lookup;
1607 if ((lookup->bfd_section->flags & SEC_READONLY) != 0)
1608 last_ro_alloc = lookup;
1609 }
1610 }
1611
1612 if (last_rel_alloc)
1613 return last_rel_alloc;
1614
1615 if (last_rel)
1616 return last_rel;
1617
1618 if (last_ro_alloc)
1619 return last_ro_alloc;
1620
1621 if (last_alloc)
1622 return last_alloc;
1623
1624 return last;
1625 }
1626
1627 /* Place an orphan section. We use this to put random SHF_ALLOC
1628 sections in the right segment. */
1629
1630 static bfd_boolean
1631 gld${EMULATION_NAME}_place_orphan (asection *s)
1632 {
1633 static struct orphan_save hold[] =
1634 {
1635 { ".text",
1636 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
1637 0, 0, 0, 0 },
1638 { ".rodata",
1639 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1640 0, 0, 0, 0 },
1641 { ".data",
1642 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
1643 0, 0, 0, 0 },
1644 { ".bss",
1645 SEC_ALLOC,
1646 0, 0, 0, 0 },
1647 { 0,
1648 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1649 0, 0, 0, 0 },
1650 { ".interp",
1651 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1652 0, 0, 0, 0 },
1653 { ".sdata",
1654 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_SMALL_DATA,
1655 0, 0, 0, 0 }
1656 };
1657 enum orphan_save_index
1658 {
1659 orphan_text = 0,
1660 orphan_rodata,
1661 orphan_data,
1662 orphan_bss,
1663 orphan_rel,
1664 orphan_interp,
1665 orphan_sdata
1666 };
1667 static int orphan_init_done = 0;
1668 struct orphan_save *place;
1669 const char *secname;
1670 lang_output_section_statement_type *after;
1671 lang_output_section_statement_type *os;
1672 int isdyn = 0;
1673 int iself = s->owner->xvec->flavour == bfd_target_elf_flavour;
1674 unsigned int sh_type = iself ? elf_section_type (s) : SHT_NULL;
1675
1676 secname = bfd_get_section_name (s->owner, s);
1677
1678 if (! link_info.relocatable
1679 && link_info.combreloc
1680 && (s->flags & SEC_ALLOC))
1681 {
1682 if (iself)
1683 switch (sh_type)
1684 {
1685 case SHT_RELA:
1686 secname = ".rela.dyn";
1687 isdyn = 1;
1688 break;
1689 case SHT_REL:
1690 secname = ".rel.dyn";
1691 isdyn = 1;
1692 break;
1693 default:
1694 break;
1695 }
1696 else if (CONST_STRNEQ (secname, ".rel"))
1697 {
1698 secname = secname[4] == 'a' ? ".rela.dyn" : ".rel.dyn";
1699 isdyn = 1;
1700 }
1701 }
1702
1703 if (isdyn || (!config.unique_orphan_sections && !unique_section_p (s)))
1704 {
1705 /* Look through the script to see where to place this section. */
1706 os = lang_output_section_find (secname);
1707
1708 if (os != NULL
1709 && (os->bfd_section == NULL
1710 || os->bfd_section->flags == 0
1711 || (_bfd_elf_match_sections_by_type (output_bfd,
1712 os->bfd_section,
1713 s->owner, s)
1714 && ((s->flags ^ os->bfd_section->flags)
1715 & (SEC_LOAD | SEC_ALLOC)) == 0)))
1716 {
1717 /* We already have an output section statement with this
1718 name, and its bfd section, if any, has compatible flags.
1719 If the section already exists but does not have any flags
1720 set, then it has been created by the linker, probably as a
1721 result of a --section-start command line switch. */
1722 lang_add_section (&os->children, s, os);
1723 return TRUE;
1724 }
1725 }
1726
1727 if (!orphan_init_done)
1728 {
1729 struct orphan_save *ho;
1730 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
1731 if (ho->name != NULL)
1732 {
1733 ho->os = lang_output_section_find (ho->name);
1734 if (ho->os != NULL && ho->os->flags == 0)
1735 ho->os->flags = ho->flags;
1736 }
1737 orphan_init_done = 1;
1738 }
1739
1740 /* If this is a final link, then always put .gnu.warning.SYMBOL
1741 sections into the .text section to get them out of the way. */
1742 if (link_info.executable
1743 && ! link_info.relocatable
1744 && CONST_STRNEQ (secname, ".gnu.warning.")
1745 && hold[orphan_text].os != NULL)
1746 {
1747 lang_add_section (&hold[orphan_text].os->children, s,
1748 hold[orphan_text].os);
1749 return TRUE;
1750 }
1751
1752 /* Decide which segment the section should go in based on the
1753 section name and section flags. We put loadable .note sections
1754 right after the .interp section, so that the PT_NOTE segment is
1755 stored right after the program headers where the OS can read it
1756 in the first page. */
1757
1758 place = NULL;
1759 if ((s->flags & SEC_ALLOC) == 0)
1760 ;
1761 else if ((s->flags & SEC_LOAD) != 0
1762 && ((iself && sh_type == SHT_NOTE)
1763 || (!iself && CONST_STRNEQ (secname, ".note"))))
1764 place = &hold[orphan_interp];
1765 else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
1766 place = &hold[orphan_bss];
1767 else if ((s->flags & SEC_SMALL_DATA) != 0)
1768 place = &hold[orphan_sdata];
1769 else if ((s->flags & SEC_READONLY) == 0)
1770 place = &hold[orphan_data];
1771 else if (((iself && (sh_type == SHT_RELA || sh_type == SHT_REL))
1772 || (!iself && CONST_STRNEQ (secname, ".rel")))
1773 && (s->flags & SEC_LOAD) != 0)
1774 place = &hold[orphan_rel];
1775 else if ((s->flags & SEC_CODE) == 0)
1776 place = &hold[orphan_rodata];
1777 else
1778 place = &hold[orphan_text];
1779
1780 after = NULL;
1781 if (place != NULL)
1782 {
1783 if (place->os == NULL)
1784 {
1785 if (place->name != NULL)
1786 place->os = lang_output_section_find (place->name);
1787 else
1788 place->os = output_rel_find (s, isdyn);
1789 }
1790 after = place->os;
1791 if (after == NULL)
1792 after = lang_output_section_find_by_flags
1793 (s, &place->os, _bfd_elf_match_sections_by_type);
1794 if (after == NULL)
1795 /* *ABS* is always the first output section statement. */
1796 after = &lang_output_section_statement.head->output_section_statement;
1797 }
1798
1799 /* Choose a unique name for the section. This will be needed if the
1800 same section name appears in the input file with different
1801 loadable or allocatable characteristics. */
1802 if (bfd_get_section_by_name (output_bfd, secname) != NULL)
1803 {
1804 static int count = 1;
1805 secname = bfd_get_unique_section_name (output_bfd, secname, &count);
1806 if (secname == NULL)
1807 einfo ("%F%P: place_orphan failed: %E\n");
1808 }
1809
1810 lang_insert_orphan (s, secname, after, place, NULL, NULL);
1811
1812 return TRUE;
1813 }
1814 EOF
1815 fi
1816
1817 if test x"$LDEMUL_FINISH" != xgld"$EMULATION_NAME"_finish; then
1818 fragment <<EOF
1819
1820 static void
1821 gld${EMULATION_NAME}_finish (void)
1822 {
1823 bfd_boolean need_layout = bfd_elf_discard_info (output_bfd, &link_info);
1824
1825 gld${EMULATION_NAME}_map_segments (need_layout);
1826 finish_default ();
1827 }
1828 EOF
1829 fi
1830
1831 if test x"$LDEMUL_GET_SCRIPT" != xgld"$EMULATION_NAME"_get_script; then
1832 fragment <<EOF
1833
1834 static char *
1835 gld${EMULATION_NAME}_get_script (int *isfile)
1836 EOF
1837
1838 if test -n "$COMPILE_IN"
1839 then
1840 # Scripts compiled in.
1841
1842 # sed commands to quote an ld script as a C string.
1843 sc="-f stringify.sed"
1844
1845 fragment <<EOF
1846 {
1847 *isfile = 0;
1848
1849 if (link_info.relocatable && config.build_constructors)
1850 return
1851 EOF
1852 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1853 echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
1854 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
1855 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
1856 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
1857 if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then : ; else
1858 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
1859 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
1860 fi
1861 if test -n "$GENERATE_PIE_SCRIPT" ; then
1862 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1863 echo ' ; else if (link_info.pie && link_info.combreloc' >> e${EMULATION_NAME}.c
1864 echo ' && link_info.relro' >> e${EMULATION_NAME}.c
1865 echo ' && (link_info.flags & DT_BIND_NOW)) return' >> e${EMULATION_NAME}.c
1866 sed $sc ldscripts/${EMULATION_NAME}.xdw >> e${EMULATION_NAME}.c
1867 echo ' ; else if (link_info.pie && link_info.combreloc) return' >> e${EMULATION_NAME}.c
1868 sed $sc ldscripts/${EMULATION_NAME}.xdc >> e${EMULATION_NAME}.c
1869 fi
1870 echo ' ; else if (link_info.pie) return' >> e${EMULATION_NAME}.c
1871 sed $sc ldscripts/${EMULATION_NAME}.xd >> e${EMULATION_NAME}.c
1872 fi
1873 if test -n "$GENERATE_SHLIB_SCRIPT" ; then
1874 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1875 echo ' ; else if (link_info.shared && link_info.combreloc' >> e${EMULATION_NAME}.c
1876 echo ' && link_info.relro' >> e${EMULATION_NAME}.c
1877 echo ' && (link_info.flags & DT_BIND_NOW)) return' >> e${EMULATION_NAME}.c
1878 sed $sc ldscripts/${EMULATION_NAME}.xsw >> e${EMULATION_NAME}.c
1879 echo ' ; else if (link_info.shared && link_info.combreloc) return' >> e${EMULATION_NAME}.c
1880 sed $sc ldscripts/${EMULATION_NAME}.xsc >> e${EMULATION_NAME}.c
1881 fi
1882 echo ' ; else if (link_info.shared) return' >> e${EMULATION_NAME}.c
1883 sed $sc ldscripts/${EMULATION_NAME}.xs >> e${EMULATION_NAME}.c
1884 fi
1885 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1886 echo ' ; else if (link_info.combreloc && link_info.relro' >> e${EMULATION_NAME}.c
1887 echo ' && (link_info.flags & DT_BIND_NOW)) return' >> e${EMULATION_NAME}.c
1888 sed $sc ldscripts/${EMULATION_NAME}.xw >> e${EMULATION_NAME}.c
1889 echo ' ; else if (link_info.combreloc) return' >> e${EMULATION_NAME}.c
1890 sed $sc ldscripts/${EMULATION_NAME}.xc >> e${EMULATION_NAME}.c
1891 fi
1892 echo ' ; else return' >> e${EMULATION_NAME}.c
1893 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
1894 echo '; }' >> e${EMULATION_NAME}.c
1895
1896 else
1897 # Scripts read from the filesystem.
1898
1899 fragment <<EOF
1900 {
1901 *isfile = 1;
1902
1903 if (link_info.relocatable && config.build_constructors)
1904 return "ldscripts/${EMULATION_NAME}.xu";
1905 else if (link_info.relocatable)
1906 return "ldscripts/${EMULATION_NAME}.xr";
1907 else if (!config.text_read_only)
1908 return "ldscripts/${EMULATION_NAME}.xbn";
1909 EOF
1910 if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then :
1911 else
1912 fragment <<EOF
1913 else if (!config.magic_demand_paged)
1914 return "ldscripts/${EMULATION_NAME}.xn";
1915 EOF
1916 fi
1917 if test -n "$GENERATE_PIE_SCRIPT" ; then
1918 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1919 fragment <<EOF
1920 else if (link_info.pie && link_info.combreloc
1921 && link_info.relro && (link_info.flags & DT_BIND_NOW))
1922 return "ldscripts/${EMULATION_NAME}.xdw";
1923 else if (link_info.pie && link_info.combreloc)
1924 return "ldscripts/${EMULATION_NAME}.xdc";
1925 EOF
1926 fi
1927 fragment <<EOF
1928 else if (link_info.pie)
1929 return "ldscripts/${EMULATION_NAME}.xd";
1930 EOF
1931 fi
1932 if test -n "$GENERATE_SHLIB_SCRIPT" ; then
1933 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1934 fragment <<EOF
1935 else if (link_info.shared && link_info.combreloc
1936 && link_info.relro && (link_info.flags & DT_BIND_NOW))
1937 return "ldscripts/${EMULATION_NAME}.xsw";
1938 else if (link_info.shared && link_info.combreloc)
1939 return "ldscripts/${EMULATION_NAME}.xsc";
1940 EOF
1941 fi
1942 fragment <<EOF
1943 else if (link_info.shared)
1944 return "ldscripts/${EMULATION_NAME}.xs";
1945 EOF
1946 fi
1947 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1948 fragment <<EOF
1949 else if (link_info.combreloc && link_info.relro
1950 && (link_info.flags & DT_BIND_NOW))
1951 return "ldscripts/${EMULATION_NAME}.xw";
1952 else if (link_info.combreloc)
1953 return "ldscripts/${EMULATION_NAME}.xc";
1954 EOF
1955 fi
1956 fragment <<EOF
1957 else
1958 return "ldscripts/${EMULATION_NAME}.x";
1959 }
1960
1961 EOF
1962 fi
1963 fi
1964
1965 if test -n "$PARSE_AND_LIST_ARGS_CASES" -o x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1966
1967 if test -n "$PARSE_AND_LIST_PROLOGUE" ; then
1968 fragment <<EOF
1969 $PARSE_AND_LIST_PROLOGUE
1970 EOF
1971 fi
1972
1973 fragment <<EOF
1974
1975 #define OPTION_DISABLE_NEW_DTAGS (400)
1976 #define OPTION_ENABLE_NEW_DTAGS (OPTION_DISABLE_NEW_DTAGS + 1)
1977 #define OPTION_GROUP (OPTION_ENABLE_NEW_DTAGS + 1)
1978 #define OPTION_EH_FRAME_HDR (OPTION_GROUP + 1)
1979 #define OPTION_EXCLUDE_LIBS (OPTION_EH_FRAME_HDR + 1)
1980 #define OPTION_HASH_STYLE (OPTION_EXCLUDE_LIBS + 1)
1981 #define OPTION_BUILD_ID (OPTION_HASH_STYLE + 1)
1982
1983 static void
1984 gld${EMULATION_NAME}_add_options
1985 (int ns, char **shortopts, int nl, struct option **longopts,
1986 int nrl ATTRIBUTE_UNUSED, struct option **really_longopts ATTRIBUTE_UNUSED)
1987 {
1988 static const char xtra_short[] = "${PARSE_AND_LIST_SHORTOPTS}z:";
1989 static const struct option xtra_long[] = {
1990 {"build-id", optional_argument, NULL, OPTION_BUILD_ID},
1991 EOF
1992
1993 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1994 fragment <<EOF
1995 {"disable-new-dtags", no_argument, NULL, OPTION_DISABLE_NEW_DTAGS},
1996 {"enable-new-dtags", no_argument, NULL, OPTION_ENABLE_NEW_DTAGS},
1997 {"eh-frame-hdr", no_argument, NULL, OPTION_EH_FRAME_HDR},
1998 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
1999 {"hash-style", required_argument, NULL, OPTION_HASH_STYLE},
2000 {"Bgroup", no_argument, NULL, OPTION_GROUP},
2001 EOF
2002 fi
2003
2004 if test -n "$PARSE_AND_LIST_LONGOPTS" ; then
2005 fragment <<EOF
2006 $PARSE_AND_LIST_LONGOPTS
2007 EOF
2008 fi
2009
2010 fragment <<EOF
2011 {NULL, no_argument, NULL, 0}
2012 };
2013
2014 *shortopts = (char *) xrealloc (*shortopts, ns + sizeof (xtra_short));
2015 memcpy (*shortopts + ns, &xtra_short, sizeof (xtra_short));
2016 *longopts = (struct option *)
2017 xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
2018 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
2019 }
2020
2021 #define DEFAULT_BUILD_ID_STYLE "sha1"
2022
2023 static bfd_boolean
2024 gld${EMULATION_NAME}_handle_option (int optc)
2025 {
2026 switch (optc)
2027 {
2028 default:
2029 return FALSE;
2030
2031 case OPTION_BUILD_ID:
2032 if (link_info.emit_note_gnu_build_id != NULL)
2033 {
2034 free (link_info.emit_note_gnu_build_id);
2035 link_info.emit_note_gnu_build_id = NULL;
2036 }
2037 if (optarg == NULL)
2038 optarg = DEFAULT_BUILD_ID_STYLE;
2039 if (strcmp (optarg, "none"))
2040 link_info.emit_note_gnu_build_id = xstrdup (optarg);
2041 break;
2042
2043 EOF
2044
2045 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2046 fragment <<EOF
2047 case OPTION_DISABLE_NEW_DTAGS:
2048 link_info.new_dtags = FALSE;
2049 break;
2050
2051 case OPTION_ENABLE_NEW_DTAGS:
2052 link_info.new_dtags = TRUE;
2053 break;
2054
2055 case OPTION_EH_FRAME_HDR:
2056 link_info.eh_frame_hdr = TRUE;
2057 break;
2058
2059 case OPTION_GROUP:
2060 link_info.flags_1 |= (bfd_vma) DF_1_GROUP;
2061 /* Groups must be self-contained. */
2062 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
2063 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
2064 break;
2065
2066 case OPTION_EXCLUDE_LIBS:
2067 add_excluded_libs (optarg);
2068 break;
2069
2070 case OPTION_HASH_STYLE:
2071 link_info.emit_hash = FALSE;
2072 link_info.emit_gnu_hash = FALSE;
2073 if (strcmp (optarg, "sysv") == 0)
2074 link_info.emit_hash = TRUE;
2075 else if (strcmp (optarg, "gnu") == 0)
2076 link_info.emit_gnu_hash = TRUE;
2077 else if (strcmp (optarg, "both") == 0)
2078 {
2079 link_info.emit_hash = TRUE;
2080 link_info.emit_gnu_hash = TRUE;
2081 }
2082 else
2083 einfo (_("%P%F: invalid hash style \`%s'\n"), optarg);
2084 break;
2085
2086 case 'z':
2087 if (strcmp (optarg, "initfirst") == 0)
2088 link_info.flags_1 |= (bfd_vma) DF_1_INITFIRST;
2089 else if (strcmp (optarg, "interpose") == 0)
2090 link_info.flags_1 |= (bfd_vma) DF_1_INTERPOSE;
2091 else if (strcmp (optarg, "loadfltr") == 0)
2092 link_info.flags_1 |= (bfd_vma) DF_1_LOADFLTR;
2093 else if (strcmp (optarg, "nodefaultlib") == 0)
2094 link_info.flags_1 |= (bfd_vma) DF_1_NODEFLIB;
2095 else if (strcmp (optarg, "nodelete") == 0)
2096 link_info.flags_1 |= (bfd_vma) DF_1_NODELETE;
2097 else if (strcmp (optarg, "nodlopen") == 0)
2098 link_info.flags_1 |= (bfd_vma) DF_1_NOOPEN;
2099 else if (strcmp (optarg, "nodump") == 0)
2100 link_info.flags_1 |= (bfd_vma) DF_1_NODUMP;
2101 else if (strcmp (optarg, "now") == 0)
2102 {
2103 link_info.flags |= (bfd_vma) DF_BIND_NOW;
2104 link_info.flags_1 |= (bfd_vma) DF_1_NOW;
2105 }
2106 else if (strcmp (optarg, "lazy") == 0)
2107 {
2108 link_info.flags &= ~(bfd_vma) DF_BIND_NOW;
2109 link_info.flags_1 &= ~(bfd_vma) DF_1_NOW;
2110 }
2111 else if (strcmp (optarg, "origin") == 0)
2112 {
2113 link_info.flags |= (bfd_vma) DF_ORIGIN;
2114 link_info.flags_1 |= (bfd_vma) DF_1_ORIGIN;
2115 }
2116 else if (strcmp (optarg, "defs") == 0)
2117 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
2118 else if (strcmp (optarg, "muldefs") == 0)
2119 link_info.allow_multiple_definition = TRUE;
2120 else if (strcmp (optarg, "combreloc") == 0)
2121 link_info.combreloc = TRUE;
2122 else if (strcmp (optarg, "nocombreloc") == 0)
2123 link_info.combreloc = FALSE;
2124 else if (strcmp (optarg, "nocopyreloc") == 0)
2125 link_info.nocopyreloc = TRUE;
2126 else if (strcmp (optarg, "execstack") == 0)
2127 {
2128 link_info.execstack = TRUE;
2129 link_info.noexecstack = FALSE;
2130 }
2131 else if (strcmp (optarg, "noexecstack") == 0)
2132 {
2133 link_info.noexecstack = TRUE;
2134 link_info.execstack = FALSE;
2135 }
2136 EOF
2137
2138 if test -n "$COMMONPAGESIZE"; then
2139 fragment <<EOF
2140 else if (strcmp (optarg, "relro") == 0)
2141 link_info.relro = TRUE;
2142 else if (strcmp (optarg, "norelro") == 0)
2143 link_info.relro = FALSE;
2144 EOF
2145 fi
2146
2147 fragment <<EOF
2148 else if (CONST_STRNEQ (optarg, "max-page-size="))
2149 {
2150 char *end;
2151
2152 config.maxpagesize = strtoul (optarg + 14, &end, 0);
2153 if (*end || (config.maxpagesize & (config.maxpagesize - 1)) != 0)
2154 einfo (_("%P%F: invalid maxium page size \`%s'\n"),
2155 optarg + 14);
2156 ASSERT (default_target != NULL);
2157 bfd_emul_set_maxpagesize (default_target, config.maxpagesize);
2158 }
2159 else if (CONST_STRNEQ (optarg, "common-page-size="))
2160 {
2161 char *end;
2162 config.commonpagesize = strtoul (optarg + 17, &end, 0);
2163 if (*end
2164 || (config.commonpagesize & (config.commonpagesize - 1)) != 0)
2165 einfo (_("%P%F: invalid common page size \`%s'\n"),
2166 optarg + 17);
2167 ASSERT (default_target != NULL);
2168 bfd_emul_set_commonpagesize (default_target,
2169 config.commonpagesize);
2170 }
2171 /* What about the other Solaris -z options? FIXME. */
2172 break;
2173 EOF
2174 fi
2175
2176 if test -n "$PARSE_AND_LIST_ARGS_CASES" ; then
2177 fragment <<EOF
2178 $PARSE_AND_LIST_ARGS_CASES
2179 EOF
2180 fi
2181
2182 fragment <<EOF
2183 }
2184
2185 return TRUE;
2186 }
2187
2188 EOF
2189
2190 if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
2191 fragment <<EOF
2192
2193 static void
2194 gld${EMULATION_NAME}_list_options (FILE * file)
2195 {
2196 fprintf (file, _("\
2197 --build-id[=STYLE] Generate build ID note\n"));
2198 EOF
2199
2200 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2201 fragment <<EOF
2202 fprintf (file, _("\
2203 -Bgroup Selects group name lookup rules for DSO\n"));
2204 fprintf (file, _("\
2205 --disable-new-dtags Disable new dynamic tags\n"));
2206 fprintf (file, _("\
2207 --enable-new-dtags Enable new dynamic tags\n"));
2208 fprintf (file, _("\
2209 --eh-frame-hdr Create .eh_frame_hdr section\n"));
2210 fprintf (file, _("\
2211 --hash-style=STYLE Set hash style to sysv, gnu or both\n"));
2212 fprintf (file, _("\
2213 -z combreloc Merge dynamic relocs into one section and sort\n"));
2214 fprintf (file, _("\
2215 -z defs Report unresolved symbols in object files.\n"));
2216 fprintf (file, _("\
2217 -z execstack Mark executable as requiring executable stack\n"));
2218 fprintf (file, _("\
2219 -z initfirst Mark DSO to be initialized first at runtime\n"));
2220 fprintf (file, _("\
2221 -z interpose Mark object to interpose all DSOs but executable\n"));
2222 fprintf (file, _("\
2223 -z lazy Mark object lazy runtime binding (default)\n"));
2224 fprintf (file, _("\
2225 -z loadfltr Mark object requiring immediate process\n"));
2226 fprintf (file, _("\
2227 -z muldefs Allow multiple definitions\n"));
2228 fprintf (file, _("\
2229 -z nocombreloc Don't merge dynamic relocs into one section\n"));
2230 fprintf (file, _("\
2231 -z nocopyreloc Don't create copy relocs\n"));
2232 fprintf (file, _("\
2233 -z nodefaultlib Mark object not to use default search paths\n"));
2234 fprintf (file, _("\
2235 -z nodelete Mark DSO non-deletable at runtime\n"));
2236 fprintf (file, _("\
2237 -z nodlopen Mark DSO not available to dlopen\n"));
2238 fprintf (file, _("\
2239 -z nodump Mark DSO not available to dldump\n"));
2240 fprintf (file, _("\
2241 -z noexecstack Mark executable as not requiring executable stack\n"));
2242 EOF
2243
2244 if test -n "$COMMONPAGESIZE"; then
2245 fragment <<EOF
2246 fprintf (file, _("\
2247 -z norelro Don't create RELRO program header\n"));
2248 EOF
2249 fi
2250
2251 fragment <<EOF
2252 fprintf (file, _("\
2253 -z now Mark object non-lazy runtime binding\n"));
2254 fprintf (file, _("\
2255 -z origin Mark object requiring immediate \$ORIGIN\n\
2256 processing at runtime\n"));
2257 EOF
2258
2259 if test -n "$COMMONPAGESIZE"; then
2260 fragment <<EOF
2261 fprintf (file, _("\
2262 -z relro Create RELRO program header\n"));
2263 EOF
2264 fi
2265
2266 fragment <<EOF
2267 fprintf (file, _("\
2268 -z max-page-size=SIZE Set maximum page size to SIZE\n"));
2269 fprintf (file, _("\
2270 -z common-page-size=SIZE Set common page size to SIZE\n"));
2271 fprintf (file, _("\
2272 -z KEYWORD Ignored for Solaris compatibility\n"));
2273 EOF
2274 fi
2275
2276 if test -n "$PARSE_AND_LIST_OPTIONS" ; then
2277 fragment <<EOF
2278 $PARSE_AND_LIST_OPTIONS
2279 EOF
2280 fi
2281
2282 fragment <<EOF
2283 }
2284 EOF
2285
2286 if test -n "$PARSE_AND_LIST_EPILOGUE" ; then
2287 fragment <<EOF
2288 $PARSE_AND_LIST_EPILOGUE
2289 EOF
2290 fi
2291 fi
2292 else
2293 fragment <<EOF
2294 #define gld${EMULATION_NAME}_add_options NULL
2295 #define gld${EMULATION_NAME}_handle_option NULL
2296 EOF
2297 if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
2298 fragment <<EOF
2299 #define gld${EMULATION_NAME}_list_options NULL
2300 EOF
2301 fi
2302 fi
2303
2304 fragment <<EOF
2305
2306 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
2307 {
2308 ${LDEMUL_BEFORE_PARSE-gld${EMULATION_NAME}_before_parse},
2309 ${LDEMUL_SYSLIB-syslib_default},
2310 ${LDEMUL_HLL-hll_default},
2311 ${LDEMUL_AFTER_PARSE-after_parse_default},
2312 ${LDEMUL_AFTER_OPEN-gld${EMULATION_NAME}_after_open},
2313 ${LDEMUL_AFTER_ALLOCATION-after_allocation_default},
2314 ${LDEMUL_SET_OUTPUT_ARCH-set_output_arch_default},
2315 ${LDEMUL_CHOOSE_TARGET-ldemul_default_target},
2316 ${LDEMUL_BEFORE_ALLOCATION-gld${EMULATION_NAME}_before_allocation},
2317 ${LDEMUL_GET_SCRIPT-gld${EMULATION_NAME}_get_script},
2318 "${EMULATION_NAME}",
2319 "${OUTPUT_FORMAT}",
2320 ${LDEMUL_FINISH-gld${EMULATION_NAME}_finish},
2321 ${LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS-NULL},
2322 ${LDEMUL_OPEN_DYNAMIC_ARCHIVE-gld${EMULATION_NAME}_open_dynamic_archive},
2323 ${LDEMUL_PLACE_ORPHAN-gld${EMULATION_NAME}_place_orphan},
2324 ${LDEMUL_SET_SYMBOLS-NULL},
2325 ${LDEMUL_PARSE_ARGS-NULL},
2326 gld${EMULATION_NAME}_add_options,
2327 gld${EMULATION_NAME}_handle_option,
2328 ${LDEMUL_UNRECOGNIZED_FILE-NULL},
2329 ${LDEMUL_LIST_OPTIONS-gld${EMULATION_NAME}_list_options},
2330 ${LDEMUL_RECOGNIZED_FILE-gld${EMULATION_NAME}_load_symbols},
2331 ${LDEMUL_FIND_POTENTIAL_LIBRARIES-NULL},
2332 ${LDEMUL_NEW_VERS_PATTERN-NULL}
2333 };
2334 EOF
This page took 0.077135 seconds and 4 git commands to generate.