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[thirdparty/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 ${EMULATION_NAME}
15 Copyright 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
16 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
17 Written by Steve Chamberlain <sac@cygnus.com>
18 ELF support by Ian Lance Taylor <ian@cygnus.com>
19
20 This file is part of the GNU Binutils.
21
22 This program is free software; you can redistribute it and/or modify
23 it under the terms of the GNU General Public License as published by
24 the Free Software Foundation; either version 3 of the License, or
25 (at your option) any later version.
26
27 This program is distributed in the hope that it will be useful,
28 but WITHOUT ANY WARRANTY; without even the implied warranty of
29 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30 GNU General Public License for more details.
31
32 You should have received a copy of the GNU General Public License
33 along with this program; if not, write to the Free Software
34 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
35 MA 02110-1301, USA. */
36
37 #define TARGET_IS_${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, (const char *) 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, "${prefix}/etc/ld.so.conf",
780 (const char *) NULL);
781 if (!gld${EMULATION_NAME}_parse_ld_so_conf (&info, tmppath))
782 {
783 free (tmppath);
784 tmppath = concat (ld_sysroot, "/etc/ld.so.conf",
785 (const char *) NULL);
786 gld${EMULATION_NAME}_parse_ld_so_conf (&info, tmppath);
787 }
788 free (tmppath);
789
790 if (info.path)
791 {
792 char *d = gld${EMULATION_NAME}_add_sysroot (info.path);
793 free (info.path);
794 ld_so_conf = d;
795 }
796 initialized = TRUE;
797 }
798
799 if (ld_so_conf == NULL)
800 return FALSE;
801
802
803 needed.by = NULL;
804 needed.name = name;
805 return gld${EMULATION_NAME}_search_needed (ld_so_conf, &needed, force);
806 }
807
808 EOF
809 # Linux
810 ;;
811 esac
812 fi
813 fragment <<EOF
814
815 /* See if an input file matches a DT_NEEDED entry by name. */
816
817 static void
818 gld${EMULATION_NAME}_check_needed (lang_input_statement_type *s)
819 {
820 const char *soname;
821
822 /* Stop looking if we've found a loaded lib. */
823 if (global_found != NULL
824 && (bfd_elf_get_dyn_lib_class (global_found->the_bfd)
825 & DYN_AS_NEEDED) == 0)
826 return;
827
828 if (s->filename == NULL || s->the_bfd == NULL)
829 return;
830
831 /* Don't look for a second non-loaded as-needed lib. */
832 if (global_found != NULL
833 && (bfd_elf_get_dyn_lib_class (s->the_bfd) & DYN_AS_NEEDED) != 0)
834 return;
835
836 if (strcmp (s->filename, global_needed->name) == 0)
837 {
838 global_found = s;
839 return;
840 }
841
842 if (s->search_dirs_flag)
843 {
844 const char *f = strrchr (s->filename, '/');
845 if (f != NULL
846 && strcmp (f + 1, global_needed->name) == 0)
847 {
848 global_found = s;
849 return;
850 }
851 }
852
853 soname = bfd_elf_get_dt_soname (s->the_bfd);
854 if (soname != NULL
855 && strcmp (soname, global_needed->name) == 0)
856 {
857 global_found = s;
858 return;
859 }
860 }
861
862 EOF
863
864 if test x"$LDEMUL_AFTER_OPEN" != xgld"$EMULATION_NAME"_after_open; then
865 fragment <<EOF
866
867 static bfd_size_type
868 gld${EMULATION_NAME}_id_note_section_size (bfd *abfd,
869 struct bfd_link_info *link_info)
870 {
871 const char *style = link_info->emit_note_gnu_build_id;
872 bfd_size_type size;
873
874 abfd = abfd;
875
876 size = offsetof (Elf_External_Note, name[sizeof "GNU"]);
877 size = (size + 3) & -(bfd_size_type) 4;
878
879 if (!strcmp (style, "md5") || !strcmp (style, "uuid"))
880 size += 128 / 8;
881 else if (!strcmp (style, "sha1"))
882 size += 160 / 8;
883 else if (!strncmp (style, "0x", 2))
884 {
885 /* ID is in string form (hex). Convert to bits. */
886 const char *id = style + 2;
887 do
888 {
889 if (ISXDIGIT (id[0]) && ISXDIGIT (id[1]))
890 {
891 ++size;
892 id += 2;
893 }
894 else if (*id == '-' || *id == ':')
895 ++id;
896 else
897 {
898 size = 0;
899 break;
900 }
901 } while (*id != '\0');
902 }
903 else
904 size = 0;
905
906 return size;
907 }
908
909 static unsigned char
910 read_hex (const char xdigit)
911 {
912 if (ISDIGIT (xdigit))
913 return xdigit - '0';
914 if (ISUPPER (xdigit))
915 return xdigit - 'A' + 0xa;
916 if (ISLOWER (xdigit))
917 return xdigit - 'a' + 0xa;
918 abort ();
919 return 0;
920 }
921
922 struct build_id_info
923 {
924 const char *style;
925 asection *sec;
926 };
927
928 static bfd_boolean
929 gld${EMULATION_NAME}_write_build_id_section (bfd *abfd)
930 {
931 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
932 struct build_id_info *info =
933 elf_tdata (abfd)->after_write_object_contents_info;
934 asection *asec;
935 Elf_Internal_Shdr *i_shdr;
936 unsigned char *contents, *id_bits;
937 bfd_size_type size;
938 Elf_External_Note *e_note;
939
940 asec = info->sec;
941 if (bfd_is_abs_section (asec->output_section))
942 {
943 einfo (_("%P: warning: .note.gnu.build-id section discarded,"
944 " --build-id ignored.\n"));
945 return TRUE;
946 }
947 i_shdr = &elf_section_data (asec->output_section)->this_hdr;
948
949 if (i_shdr->contents == NULL)
950 {
951 if (asec->contents == NULL)
952 asec->contents = xmalloc (asec->size);
953 contents = asec->contents;
954 }
955 else
956 contents = i_shdr->contents + asec->output_offset;
957
958 e_note = (void *) contents;
959 size = offsetof (Elf_External_Note, name[sizeof "GNU"]);
960 size = (size + 3) & -(bfd_size_type) 4;
961 id_bits = contents + size;
962 size = asec->size - size;
963
964 bfd_h_put_32 (abfd, sizeof "GNU", &e_note->namesz);
965 bfd_h_put_32 (abfd, size, &e_note->descsz);
966 bfd_h_put_32 (abfd, NT_GNU_BUILD_ID, &e_note->type);
967 memcpy (e_note->name, "GNU", sizeof "GNU");
968
969 if (!strcmp (info->style, "md5"))
970 {
971 struct md5_ctx ctx;
972 md5_init_ctx (&ctx);
973 if (bed->s->checksum_contents (abfd,
974 (void (*) (const void *, size_t, void *))
975 &md5_process_bytes,
976 &ctx))
977 md5_finish_ctx (&ctx, id_bits);
978 else
979 return FALSE;
980 }
981 else if (!strcmp (info->style, "sha1"))
982 {
983 struct sha1_ctx ctx;
984 sha1_init_ctx (&ctx);
985 if (bed->s->checksum_contents (abfd,
986 (void (*) (const void *, size_t, void *))
987 &sha1_process_bytes,
988 &ctx))
989 sha1_finish_ctx (&ctx, id_bits);
990 else
991 return FALSE;
992 }
993 else if (!strcmp (info->style, "uuid"))
994 {
995 int n;
996 int fd = open ("/dev/urandom", O_RDONLY);
997 if (fd < 0)
998 return FALSE;
999 n = read (fd, id_bits, size);
1000 close (fd);
1001 if (n < (int) size)
1002 return FALSE;
1003 }
1004 else if (!strncmp (info->style, "0x", 2))
1005 {
1006 /* ID is in string form (hex). Convert to bits. */
1007 const char *id = info->style + 2;
1008 size_t n = 0;
1009 do
1010 {
1011 if (ISXDIGIT (id[0]) && ISXDIGIT (id[1]))
1012 {
1013 id_bits[n] = read_hex (*id++) << 4;
1014 id_bits[n++] |= read_hex (*id++);
1015 }
1016 else if (*id == '-' || *id == ':')
1017 ++id;
1018 else
1019 abort (); /* Should have been validated earlier. */
1020 } while (*id != '\0');
1021 }
1022 else
1023 abort (); /* Should have been validated earlier. */
1024
1025 size = asec->size;
1026 return (bfd_seek (abfd,
1027 i_shdr->sh_offset + asec->output_offset, SEEK_SET) == 0
1028 && bfd_bwrite (contents, size, abfd) == size);
1029 }
1030
1031
1032 /* This is called after all the input files have been opened. */
1033
1034 static void
1035 gld${EMULATION_NAME}_after_open (void)
1036 {
1037 struct bfd_link_needed_list *needed, *l;
1038 struct elf_link_hash_table *htab;
1039
1040 htab = elf_hash_table (&link_info);
1041 if (!is_elf_hash_table (htab))
1042 return;
1043
1044 if (link_info.emit_note_gnu_build_id)
1045 {
1046 bfd *abfd;
1047 asection *s;
1048 bfd_size_type size;
1049
1050 abfd = link_info.input_bfds;
1051
1052 size = gld${EMULATION_NAME}_id_note_section_size (abfd, &link_info);
1053 if (size == 0)
1054 {
1055 einfo ("%P: warning: unrecognized --build-id style ignored.\n");
1056 free (link_info.emit_note_gnu_build_id);
1057 link_info.emit_note_gnu_build_id = NULL;
1058 }
1059 else
1060 {
1061 s = bfd_make_section_with_flags (abfd, ".note.gnu.build-id",
1062 SEC_ALLOC | SEC_LOAD
1063 | SEC_IN_MEMORY | SEC_LINKER_CREATED
1064 | SEC_READONLY | SEC_DATA);
1065 if (s != NULL && bfd_set_section_alignment (abfd, s, 2))
1066 {
1067 struct elf_obj_tdata *t = elf_tdata (output_bfd);
1068 struct build_id_info *b = xmalloc (sizeof *b);
1069 b->style = link_info.emit_note_gnu_build_id;
1070 b->sec = s;
1071 elf_section_type (s) = SHT_NOTE;
1072 s->size = size;
1073 t->after_write_object_contents
1074 = &gld${EMULATION_NAME}_write_build_id_section;
1075 t->after_write_object_contents_info = b;
1076 }
1077 else
1078 {
1079 einfo ("%P: warning: Cannot create .note.gnu.build-id section,"
1080 " --build-id ignored.\n");
1081 free (link_info.emit_note_gnu_build_id);
1082 link_info.emit_note_gnu_build_id = NULL;
1083 }
1084 }
1085 }
1086
1087 if (link_info.relocatable)
1088 return;
1089
1090 if (link_info.eh_frame_hdr
1091 && !link_info.traditional_format)
1092 {
1093 bfd *abfd;
1094 asection *s;
1095
1096 for (abfd = link_info.input_bfds; abfd; abfd = abfd->link_next)
1097 {
1098 s = bfd_get_section_by_name (abfd, ".eh_frame");
1099 if (s && s->size > 8 && !bfd_is_abs_section (s->output_section))
1100 break;
1101 }
1102 if (abfd)
1103 {
1104 const struct elf_backend_data *bed;
1105
1106 bed = get_elf_backend_data (abfd);
1107 s = bfd_make_section_with_flags (abfd, ".eh_frame_hdr",
1108 bed->dynamic_sec_flags
1109 | SEC_READONLY);
1110 if (s != NULL
1111 && bfd_set_section_alignment (abfd, s, 2))
1112 htab->eh_info.hdr_sec = s;
1113 else
1114 einfo ("%P: warning: Cannot create .eh_frame_hdr section,"
1115 " --eh-frame-hdr ignored.\n");
1116 }
1117 }
1118
1119 /* Get the list of files which appear in DT_NEEDED entries in
1120 dynamic objects included in the link (often there will be none).
1121 For each such file, we want to track down the corresponding
1122 library, and include the symbol table in the link. This is what
1123 the runtime dynamic linker will do. Tracking the files down here
1124 permits one dynamic object to include another without requiring
1125 special action by the person doing the link. Note that the
1126 needed list can actually grow while we are stepping through this
1127 loop. */
1128 if (!link_info.executable)
1129 return;
1130 needed = bfd_elf_get_needed_list (output_bfd, &link_info);
1131 for (l = needed; l != NULL; l = l->next)
1132 {
1133 struct bfd_link_needed_list *ll;
1134 struct dt_needed n, nn;
1135 int force;
1136
1137 /* If the lib that needs this one was --as-needed and wasn't
1138 found to be needed, then this lib isn't needed either. */
1139 if (l->by != NULL
1140 && (bfd_elf_get_dyn_lib_class (l->by) & DYN_AS_NEEDED) != 0)
1141 continue;
1142
1143 /* If we've already seen this file, skip it. */
1144 for (ll = needed; ll != l; ll = ll->next)
1145 if ((ll->by == NULL
1146 || (bfd_elf_get_dyn_lib_class (ll->by) & DYN_AS_NEEDED) == 0)
1147 && strcmp (ll->name, l->name) == 0)
1148 break;
1149 if (ll != l)
1150 continue;
1151
1152 /* See if this file was included in the link explicitly. */
1153 global_needed = l;
1154 global_found = NULL;
1155 lang_for_each_input_file (gld${EMULATION_NAME}_check_needed);
1156 if (global_found != NULL
1157 && (bfd_elf_get_dyn_lib_class (global_found->the_bfd)
1158 & DYN_AS_NEEDED) == 0)
1159 continue;
1160
1161 n.by = l->by;
1162 n.name = l->name;
1163 nn.by = l->by;
1164 if (trace_file_tries)
1165 info_msg (_("%s needed by %B\n"), l->name, l->by);
1166
1167 /* As-needed libs specified on the command line (or linker script)
1168 take priority over libs found in search dirs. */
1169 if (global_found != NULL)
1170 {
1171 nn.name = global_found->filename;
1172 if (gld${EMULATION_NAME}_try_needed (&nn, TRUE))
1173 continue;
1174 }
1175
1176 /* We need to find this file and include the symbol table. We
1177 want to search for the file in the same way that the dynamic
1178 linker will search. That means that we want to use
1179 rpath_link, rpath, then the environment variable
1180 LD_LIBRARY_PATH (native only), then the DT_RPATH/DT_RUNPATH
1181 entries (native only), then the linker script LIB_SEARCH_DIRS.
1182 We do not search using the -L arguments.
1183
1184 We search twice. The first time, we skip objects which may
1185 introduce version mismatches. The second time, we force
1186 their use. See gld${EMULATION_NAME}_vercheck comment. */
1187 for (force = 0; force < 2; force++)
1188 {
1189 size_t len;
1190 search_dirs_type *search;
1191 EOF
1192 if [ "x${NATIVE}" = xyes ] ; then
1193 fragment <<EOF
1194 const char *lib_path;
1195 EOF
1196 fi
1197 if [ "x${USE_LIBPATH}" = xyes ] ; then
1198 fragment <<EOF
1199 struct bfd_link_needed_list *rp;
1200 int found;
1201 EOF
1202 fi
1203 fragment <<EOF
1204
1205 if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link,
1206 &n, force))
1207 break;
1208 EOF
1209 if [ "x${USE_LIBPATH}" = xyes ] ; then
1210 fragment <<EOF
1211 if (gld${EMULATION_NAME}_search_needed (command_line.rpath,
1212 &n, force))
1213 break;
1214 EOF
1215 fi
1216 if [ "x${NATIVE}" = xyes ] ; then
1217 fragment <<EOF
1218 if (command_line.rpath_link == NULL
1219 && command_line.rpath == NULL)
1220 {
1221 lib_path = (const char *) getenv ("LD_RUN_PATH");
1222 if (gld${EMULATION_NAME}_search_needed (lib_path, &n,
1223 force))
1224 break;
1225 }
1226 lib_path = (const char *) getenv ("LD_LIBRARY_PATH");
1227 if (gld${EMULATION_NAME}_search_needed (lib_path, &n, force))
1228 break;
1229 EOF
1230 fi
1231 if [ "x${USE_LIBPATH}" = xyes ] ; then
1232 fragment <<EOF
1233 found = 0;
1234 rp = bfd_elf_get_runpath_list (output_bfd, &link_info);
1235 for (; !found && rp != NULL; rp = rp->next)
1236 {
1237 char *tmpname = gld${EMULATION_NAME}_add_sysroot (rp->name);
1238 found = (rp->by == l->by
1239 && gld${EMULATION_NAME}_search_needed (tmpname,
1240 &n,
1241 force));
1242 free (tmpname);
1243 }
1244 if (found)
1245 break;
1246
1247 EOF
1248 fi
1249 if [ "x${USE_LIBPATH}" = xyes ] ; then
1250 case ${target} in
1251 *-*-freebsd* | *-*-dragonfly*)
1252 fragment <<EOF
1253 if (gld${EMULATION_NAME}_check_ld_elf_hints (l->name, force))
1254 break;
1255 EOF
1256 # FreeBSD
1257 ;;
1258
1259 *-*-linux-* | *-*-k*bsd*-*)
1260 # Linux
1261 fragment <<EOF
1262 if (gld${EMULATION_NAME}_check_ld_so_conf (l->name, force))
1263 break;
1264
1265 EOF
1266 ;;
1267 esac
1268 fi
1269 fragment <<EOF
1270 len = strlen (l->name);
1271 for (search = search_head; search != NULL; search = search->next)
1272 {
1273 char *filename;
1274
1275 if (search->cmdline)
1276 continue;
1277 filename = (char *) xmalloc (strlen (search->name) + len + 2);
1278 sprintf (filename, "%s/%s", search->name, l->name);
1279 nn.name = filename;
1280 if (gld${EMULATION_NAME}_try_needed (&nn, force))
1281 break;
1282 free (filename);
1283 }
1284 if (search != NULL)
1285 break;
1286 EOF
1287 fragment <<EOF
1288 }
1289
1290 if (force < 2)
1291 continue;
1292
1293 einfo ("%P: warning: %s, needed by %B, not found (try using -rpath or -rpath-link)\n",
1294 l->name, l->by);
1295 }
1296 }
1297
1298 EOF
1299 fi
1300
1301 fragment <<EOF
1302
1303 /* Look through an expression for an assignment statement. */
1304
1305 static void
1306 gld${EMULATION_NAME}_find_exp_assignment (etree_type *exp)
1307 {
1308 bfd_boolean provide = FALSE;
1309
1310 switch (exp->type.node_class)
1311 {
1312 case etree_provide:
1313 provide = TRUE;
1314 /* Fall thru */
1315 case etree_assign:
1316 /* We call record_link_assignment even if the symbol is defined.
1317 This is because if it is defined by a dynamic object, we
1318 actually want to use the value defined by the linker script,
1319 not the value from the dynamic object (because we are setting
1320 symbols like etext). If the symbol is defined by a regular
1321 object, then, as it happens, calling record_link_assignment
1322 will do no harm. */
1323 if (strcmp (exp->assign.dst, ".") != 0)
1324 {
1325 if (!bfd_elf_record_link_assignment (output_bfd, &link_info,
1326 exp->assign.dst, provide,
1327 exp->assign.hidden))
1328 einfo ("%P%F: failed to record assignment to %s: %E\n",
1329 exp->assign.dst);
1330 }
1331 gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src);
1332 break;
1333
1334 case etree_binary:
1335 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs);
1336 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs);
1337 break;
1338
1339 case etree_trinary:
1340 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond);
1341 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs);
1342 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs);
1343 break;
1344
1345 case etree_unary:
1346 gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child);
1347 break;
1348
1349 default:
1350 break;
1351 }
1352 }
1353
1354
1355 /* This is called by the before_allocation routine via
1356 lang_for_each_statement. It locates any assignment statements, and
1357 tells the ELF backend about them, in case they are assignments to
1358 symbols which are referred to by dynamic objects. */
1359
1360 static void
1361 gld${EMULATION_NAME}_find_statement_assignment (lang_statement_union_type *s)
1362 {
1363 if (s->header.type == lang_assignment_statement_enum)
1364 gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp);
1365 }
1366
1367 EOF
1368
1369 if test x"$LDEMUL_BEFORE_ALLOCATION" != xgld"$EMULATION_NAME"_before_allocation; then
1370 if test x"${ELF_INTERPRETER_NAME+set}" = xset; then
1371 ELF_INTERPRETER_SET_DEFAULT="
1372 if (sinterp != NULL)
1373 {
1374 sinterp->contents = (unsigned char *) ${ELF_INTERPRETER_NAME};
1375 sinterp->size = strlen ((char *) sinterp->contents) + 1;
1376 }
1377
1378 "
1379 else
1380 ELF_INTERPRETER_SET_DEFAULT=
1381 fi
1382 fragment <<EOF
1383
1384 /* This is called after the sections have been attached to output
1385 sections, but before any sizes or addresses have been set. */
1386
1387 static void
1388 gld${EMULATION_NAME}_before_allocation (void)
1389 {
1390 const char *rpath;
1391 asection *sinterp;
1392
1393 if (link_info.hash->type == bfd_link_elf_hash_table)
1394 _bfd_elf_tls_setup (output_bfd, &link_info);
1395
1396 /* If we are going to make any variable assignments, we need to let
1397 the ELF backend know about them in case the variables are
1398 referred to by dynamic objects. */
1399 lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment);
1400
1401 /* Let the ELF backend work out the sizes of any sections required
1402 by dynamic linking. */
1403 rpath = command_line.rpath;
1404 if (rpath == NULL)
1405 rpath = (const char *) getenv ("LD_RUN_PATH");
1406 if (! (bfd_elf_size_dynamic_sections
1407 (output_bfd, command_line.soname, rpath,
1408 command_line.filter_shlib,
1409 (const char * const *) command_line.auxiliary_filters,
1410 &link_info, &sinterp, lang_elf_version_info)))
1411 einfo ("%P%F: failed to set dynamic section sizes: %E\n");
1412
1413 ${ELF_INTERPRETER_SET_DEFAULT}
1414 /* Let the user override the dynamic linker we are using. */
1415 if (command_line.interpreter != NULL
1416 && sinterp != NULL)
1417 {
1418 sinterp->contents = (bfd_byte *) command_line.interpreter;
1419 sinterp->size = strlen (command_line.interpreter) + 1;
1420 }
1421
1422 /* Look for any sections named .gnu.warning. As a GNU extensions,
1423 we treat such sections as containing warning messages. We print
1424 out the warning message, and then zero out the section size so
1425 that it does not get copied into the output file. */
1426
1427 {
1428 LANG_FOR_EACH_INPUT_STATEMENT (is)
1429 {
1430 asection *s;
1431 bfd_size_type sz;
1432 char *msg;
1433 bfd_boolean ret;
1434
1435 if (is->just_syms_flag)
1436 continue;
1437
1438 s = bfd_get_section_by_name (is->the_bfd, ".gnu.warning");
1439 if (s == NULL)
1440 continue;
1441
1442 sz = s->size;
1443 msg = xmalloc ((size_t) (sz + 1));
1444 if (! bfd_get_section_contents (is->the_bfd, s, msg,
1445 (file_ptr) 0, sz))
1446 einfo ("%F%B: Can't read contents of section .gnu.warning: %E\n",
1447 is->the_bfd);
1448 msg[sz] = '\0';
1449 ret = link_info.callbacks->warning (&link_info, msg,
1450 (const char *) NULL,
1451 is->the_bfd, (asection *) NULL,
1452 (bfd_vma) 0);
1453 ASSERT (ret);
1454 free (msg);
1455
1456 /* Clobber the section size, so that we don't waste space
1457 copying the warning into the output file. If we've already
1458 sized the output section, adjust its size. The adjustment
1459 is on rawsize because targets that size sections early will
1460 have called lang_reset_memory_regions after sizing. */
1461 if (s->output_section != NULL
1462 && s->output_section->rawsize >= s->size)
1463 s->output_section->rawsize -= s->size;
1464
1465 s->size = 0;
1466
1467 /* Also set SEC_EXCLUDE, so that local symbols defined in the
1468 warning section don't get copied to the output. */
1469 s->flags |= SEC_EXCLUDE | SEC_KEEP;
1470 }
1471 }
1472
1473 before_allocation_default ();
1474
1475 if (!bfd_elf_size_dynsym_hash_dynstr (output_bfd, &link_info))
1476 einfo ("%P%F: failed to set dynamic section sizes: %E\n");
1477 }
1478
1479 EOF
1480 fi
1481
1482 if test x"$LDEMUL_OPEN_DYNAMIC_ARCHIVE" != xgld"$EMULATION_NAME"_open_dynamic_archive; then
1483 fragment <<EOF
1484
1485 /* Try to open a dynamic archive. This is where we know that ELF
1486 dynamic libraries have an extension of .so (or .sl on oddball systems
1487 like hpux). */
1488
1489 static bfd_boolean
1490 gld${EMULATION_NAME}_open_dynamic_archive
1491 (const char *arch, search_dirs_type *search, lang_input_statement_type *entry)
1492 {
1493 const char *filename;
1494 char *string;
1495
1496 if (! entry->is_archive)
1497 return FALSE;
1498
1499 filename = entry->filename;
1500
1501 /* This allocates a few bytes too many when EXTRA_SHLIB_EXTENSION
1502 is defined, but it does not seem worth the headache to optimize
1503 away those two bytes of space. */
1504 string = (char *) xmalloc (strlen (search->name)
1505 + strlen (filename)
1506 + strlen (arch)
1507 #ifdef EXTRA_SHLIB_EXTENSION
1508 + strlen (EXTRA_SHLIB_EXTENSION)
1509 #endif
1510 + sizeof "/lib.so");
1511
1512 sprintf (string, "%s/lib%s%s.so", search->name, filename, arch);
1513
1514 #ifdef EXTRA_SHLIB_EXTENSION
1515 /* Try the .so extension first. If that fails build a new filename
1516 using EXTRA_SHLIB_EXTENSION. */
1517 if (! ldfile_try_open_bfd (string, entry))
1518 sprintf (string, "%s/lib%s%s%s", search->name,
1519 filename, arch, EXTRA_SHLIB_EXTENSION);
1520 #endif
1521
1522 if (! ldfile_try_open_bfd (string, entry))
1523 {
1524 free (string);
1525 return FALSE;
1526 }
1527
1528 entry->filename = string;
1529
1530 /* We have found a dynamic object to include in the link. The ELF
1531 backend linker will create a DT_NEEDED entry in the .dynamic
1532 section naming this file. If this file includes a DT_SONAME
1533 entry, it will be used. Otherwise, the ELF linker will just use
1534 the name of the file. For an archive found by searching, like
1535 this one, the DT_NEEDED entry should consist of just the name of
1536 the file, without the path information used to find it. Note
1537 that we only need to do this if we have a dynamic object; an
1538 archive will never be referenced by a DT_NEEDED entry.
1539
1540 FIXME: This approach--using bfd_elf_set_dt_needed_name--is not
1541 very pretty. I haven't been able to think of anything that is
1542 pretty, though. */
1543 if (bfd_check_format (entry->the_bfd, bfd_object)
1544 && (entry->the_bfd->flags & DYNAMIC) != 0)
1545 {
1546 ASSERT (entry->is_archive && entry->search_dirs_flag);
1547
1548 /* Rather than duplicating the logic above. Just use the
1549 filename we recorded earlier. */
1550
1551 filename = lbasename (entry->filename);
1552 bfd_elf_set_dt_needed_name (entry->the_bfd, filename);
1553 }
1554
1555 return TRUE;
1556 }
1557
1558 EOF
1559 fi
1560
1561 if test x"$LDEMUL_PLACE_ORPHAN" != xgld"$EMULATION_NAME"_place_orphan; then
1562 fragment <<EOF
1563
1564 /* A variant of lang_output_section_find used by place_orphan. */
1565
1566 static lang_output_section_statement_type *
1567 output_rel_find (asection *sec, int isdyn)
1568 {
1569 lang_output_section_statement_type *lookup;
1570 lang_output_section_statement_type *last = NULL;
1571 lang_output_section_statement_type *last_alloc = NULL;
1572 lang_output_section_statement_type *last_ro_alloc = NULL;
1573 lang_output_section_statement_type *last_rel = NULL;
1574 lang_output_section_statement_type *last_rel_alloc = NULL;
1575 int rela = sec->name[4] == 'a';
1576
1577 for (lookup = &lang_output_section_statement.head->output_section_statement;
1578 lookup != NULL;
1579 lookup = lookup->next)
1580 {
1581 if (lookup->constraint != -1
1582 && CONST_STRNEQ (lookup->name, ".rel"))
1583 {
1584 int lookrela = lookup->name[4] == 'a';
1585
1586 /* .rel.dyn must come before all other reloc sections, to suit
1587 GNU ld.so. */
1588 if (isdyn)
1589 break;
1590
1591 /* Don't place after .rel.plt as doing so results in wrong
1592 dynamic tags. */
1593 if (strcmp (".plt", lookup->name + 4 + lookrela) == 0)
1594 break;
1595
1596 if (rela == lookrela || last_rel == NULL)
1597 last_rel = lookup;
1598 if ((rela == lookrela || last_rel_alloc == NULL)
1599 && lookup->bfd_section != NULL
1600 && (lookup->bfd_section->flags & SEC_ALLOC) != 0)
1601 last_rel_alloc = lookup;
1602 }
1603
1604 last = lookup;
1605 if (lookup->bfd_section != NULL
1606 && (lookup->bfd_section->flags & SEC_ALLOC) != 0)
1607 {
1608 last_alloc = lookup;
1609 if ((lookup->bfd_section->flags & SEC_READONLY) != 0)
1610 last_ro_alloc = lookup;
1611 }
1612 }
1613
1614 if (last_rel_alloc)
1615 return last_rel_alloc;
1616
1617 if (last_rel)
1618 return last_rel;
1619
1620 if (last_ro_alloc)
1621 return last_ro_alloc;
1622
1623 if (last_alloc)
1624 return last_alloc;
1625
1626 return last;
1627 }
1628
1629 /* Place an orphan section. We use this to put random SHF_ALLOC
1630 sections in the right segment. */
1631
1632 static bfd_boolean
1633 gld${EMULATION_NAME}_place_orphan (asection *s)
1634 {
1635 static struct orphan_save hold[] =
1636 {
1637 { ".text",
1638 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
1639 0, 0, 0, 0 },
1640 { ".rodata",
1641 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1642 0, 0, 0, 0 },
1643 { ".data",
1644 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
1645 0, 0, 0, 0 },
1646 { ".bss",
1647 SEC_ALLOC,
1648 0, 0, 0, 0 },
1649 { 0,
1650 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1651 0, 0, 0, 0 },
1652 { ".interp",
1653 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1654 0, 0, 0, 0 },
1655 { ".sdata",
1656 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_SMALL_DATA,
1657 0, 0, 0, 0 }
1658 };
1659 enum orphan_save_index
1660 {
1661 orphan_text = 0,
1662 orphan_rodata,
1663 orphan_data,
1664 orphan_bss,
1665 orphan_rel,
1666 orphan_interp,
1667 orphan_sdata
1668 };
1669 static int orphan_init_done = 0;
1670 struct orphan_save *place;
1671 const char *secname;
1672 lang_output_section_statement_type *after;
1673 lang_output_section_statement_type *os;
1674 int isdyn = 0;
1675 int iself = s->owner->xvec->flavour == bfd_target_elf_flavour;
1676 unsigned int sh_type = iself ? elf_section_type (s) : SHT_NULL;
1677
1678 secname = bfd_get_section_name (s->owner, s);
1679
1680 if (! link_info.relocatable
1681 && link_info.combreloc
1682 && (s->flags & SEC_ALLOC))
1683 {
1684 if (iself)
1685 switch (sh_type)
1686 {
1687 case SHT_RELA:
1688 secname = ".rela.dyn";
1689 isdyn = 1;
1690 break;
1691 case SHT_REL:
1692 secname = ".rel.dyn";
1693 isdyn = 1;
1694 break;
1695 default:
1696 break;
1697 }
1698 else if (CONST_STRNEQ (secname, ".rel"))
1699 {
1700 secname = secname[4] == 'a' ? ".rela.dyn" : ".rel.dyn";
1701 isdyn = 1;
1702 }
1703 }
1704
1705 if (isdyn || (!config.unique_orphan_sections && !unique_section_p (s)))
1706 {
1707 /* Look through the script to see where to place this section. */
1708 os = lang_output_section_find (secname);
1709
1710 if (os != NULL
1711 && (os->bfd_section == NULL
1712 || os->bfd_section->flags == 0
1713 || (_bfd_elf_match_sections_by_type (output_bfd,
1714 os->bfd_section,
1715 s->owner, s)
1716 && ((s->flags ^ os->bfd_section->flags)
1717 & (SEC_LOAD | SEC_ALLOC)) == 0)))
1718 {
1719 /* We already have an output section statement with this
1720 name, and its bfd section, if any, has compatible flags.
1721 If the section already exists but does not have any flags
1722 set, then it has been created by the linker, probably as a
1723 result of a --section-start command line switch. */
1724 lang_add_section (&os->children, s, os);
1725 return TRUE;
1726 }
1727 }
1728
1729 if (!orphan_init_done)
1730 {
1731 struct orphan_save *ho;
1732 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
1733 if (ho->name != NULL)
1734 {
1735 ho->os = lang_output_section_find (ho->name);
1736 if (ho->os != NULL && ho->os->flags == 0)
1737 ho->os->flags = ho->flags;
1738 }
1739 orphan_init_done = 1;
1740 }
1741
1742 /* If this is a final link, then always put .gnu.warning.SYMBOL
1743 sections into the .text section to get them out of the way. */
1744 if (link_info.executable
1745 && ! link_info.relocatable
1746 && CONST_STRNEQ (secname, ".gnu.warning.")
1747 && hold[orphan_text].os != NULL)
1748 {
1749 lang_add_section (&hold[orphan_text].os->children, s,
1750 hold[orphan_text].os);
1751 return TRUE;
1752 }
1753
1754 /* Decide which segment the section should go in based on the
1755 section name and section flags. We put loadable .note sections
1756 right after the .interp section, so that the PT_NOTE segment is
1757 stored right after the program headers where the OS can read it
1758 in the first page. */
1759
1760 place = NULL;
1761 if ((s->flags & SEC_ALLOC) == 0)
1762 ;
1763 else if ((s->flags & SEC_LOAD) != 0
1764 && ((iself && sh_type == SHT_NOTE)
1765 || (!iself && CONST_STRNEQ (secname, ".note"))))
1766 place = &hold[orphan_interp];
1767 else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
1768 place = &hold[orphan_bss];
1769 else if ((s->flags & SEC_SMALL_DATA) != 0)
1770 place = &hold[orphan_sdata];
1771 else if ((s->flags & SEC_READONLY) == 0)
1772 place = &hold[orphan_data];
1773 else if (((iself && (sh_type == SHT_RELA || sh_type == SHT_REL))
1774 || (!iself && CONST_STRNEQ (secname, ".rel")))
1775 && (s->flags & SEC_LOAD) != 0)
1776 place = &hold[orphan_rel];
1777 else if ((s->flags & SEC_CODE) == 0)
1778 place = &hold[orphan_rodata];
1779 else
1780 place = &hold[orphan_text];
1781
1782 after = NULL;
1783 if (place != NULL)
1784 {
1785 if (place->os == NULL)
1786 {
1787 if (place->name != NULL)
1788 place->os = lang_output_section_find (place->name);
1789 else
1790 place->os = output_rel_find (s, isdyn);
1791 }
1792 after = place->os;
1793 if (after == NULL)
1794 after = lang_output_section_find_by_flags
1795 (s, &place->os, _bfd_elf_match_sections_by_type);
1796 if (after == NULL)
1797 /* *ABS* is always the first output section statement. */
1798 after = &lang_output_section_statement.head->output_section_statement;
1799 }
1800
1801 /* Choose a unique name for the section. This will be needed if the
1802 same section name appears in the input file with different
1803 loadable or allocatable characteristics. */
1804 if (bfd_get_section_by_name (output_bfd, secname) != NULL)
1805 {
1806 static int count = 1;
1807 secname = bfd_get_unique_section_name (output_bfd, secname, &count);
1808 if (secname == NULL)
1809 einfo ("%F%P: place_orphan failed: %E\n");
1810 }
1811
1812 lang_insert_orphan (s, secname, after, place, NULL, NULL);
1813
1814 return TRUE;
1815 }
1816 EOF
1817 fi
1818
1819 if test x"$LDEMUL_FINISH" != xgld"$EMULATION_NAME"_finish; then
1820 fragment <<EOF
1821
1822 static void
1823 gld${EMULATION_NAME}_finish (void)
1824 {
1825 bfd_boolean need_layout = bfd_elf_discard_info (output_bfd, &link_info);
1826
1827 gld${EMULATION_NAME}_map_segments (need_layout);
1828 finish_default ();
1829 }
1830 EOF
1831 fi
1832
1833 if test x"$LDEMUL_GET_SCRIPT" != xgld"$EMULATION_NAME"_get_script; then
1834 fragment <<EOF
1835
1836 static char *
1837 gld${EMULATION_NAME}_get_script (int *isfile)
1838 EOF
1839
1840 if test -n "$COMPILE_IN"
1841 then
1842 # Scripts compiled in.
1843
1844 # sed commands to quote an ld script as a C string.
1845 sc="-f stringify.sed"
1846
1847 fragment <<EOF
1848 {
1849 *isfile = 0;
1850
1851 if (link_info.relocatable && config.build_constructors)
1852 return
1853 EOF
1854 sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1855 echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
1856 sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
1857 echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
1858 sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
1859 if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then : ; else
1860 echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
1861 sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
1862 fi
1863 if test -n "$GENERATE_PIE_SCRIPT" ; then
1864 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1865 echo ' ; else if (link_info.pie && link_info.combreloc' >> e${EMULATION_NAME}.c
1866 echo ' && link_info.relro' >> e${EMULATION_NAME}.c
1867 echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
1868 sed $sc ldscripts/${EMULATION_NAME}.xdw >> e${EMULATION_NAME}.c
1869 echo ' ; else if (link_info.pie && link_info.combreloc) return' >> e${EMULATION_NAME}.c
1870 sed $sc ldscripts/${EMULATION_NAME}.xdc >> e${EMULATION_NAME}.c
1871 fi
1872 echo ' ; else if (link_info.pie) return' >> e${EMULATION_NAME}.c
1873 sed $sc ldscripts/${EMULATION_NAME}.xd >> e${EMULATION_NAME}.c
1874 fi
1875 if test -n "$GENERATE_SHLIB_SCRIPT" ; then
1876 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1877 echo ' ; else if (link_info.shared && link_info.combreloc' >> e${EMULATION_NAME}.c
1878 echo ' && link_info.relro' >> e${EMULATION_NAME}.c
1879 echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
1880 sed $sc ldscripts/${EMULATION_NAME}.xsw >> e${EMULATION_NAME}.c
1881 echo ' ; else if (link_info.shared && link_info.combreloc) return' >> e${EMULATION_NAME}.c
1882 sed $sc ldscripts/${EMULATION_NAME}.xsc >> e${EMULATION_NAME}.c
1883 fi
1884 echo ' ; else if (link_info.shared) return' >> e${EMULATION_NAME}.c
1885 sed $sc ldscripts/${EMULATION_NAME}.xs >> e${EMULATION_NAME}.c
1886 fi
1887 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1888 echo ' ; else if (link_info.combreloc && link_info.relro' >> e${EMULATION_NAME}.c
1889 echo ' && (link_info.flags & DF_BIND_NOW)) return' >> e${EMULATION_NAME}.c
1890 sed $sc ldscripts/${EMULATION_NAME}.xw >> e${EMULATION_NAME}.c
1891 echo ' ; else if (link_info.combreloc) return' >> e${EMULATION_NAME}.c
1892 sed $sc ldscripts/${EMULATION_NAME}.xc >> e${EMULATION_NAME}.c
1893 fi
1894 echo ' ; else return' >> e${EMULATION_NAME}.c
1895 sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
1896 echo '; }' >> e${EMULATION_NAME}.c
1897
1898 else
1899 # Scripts read from the filesystem.
1900
1901 fragment <<EOF
1902 {
1903 *isfile = 1;
1904
1905 if (link_info.relocatable && config.build_constructors)
1906 return "ldscripts/${EMULATION_NAME}.xu";
1907 else if (link_info.relocatable)
1908 return "ldscripts/${EMULATION_NAME}.xr";
1909 else if (!config.text_read_only)
1910 return "ldscripts/${EMULATION_NAME}.xbn";
1911 EOF
1912 if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then :
1913 else
1914 fragment <<EOF
1915 else if (!config.magic_demand_paged)
1916 return "ldscripts/${EMULATION_NAME}.xn";
1917 EOF
1918 fi
1919 if test -n "$GENERATE_PIE_SCRIPT" ; then
1920 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1921 fragment <<EOF
1922 else if (link_info.pie && link_info.combreloc
1923 && link_info.relro && (link_info.flags & DF_BIND_NOW))
1924 return "ldscripts/${EMULATION_NAME}.xdw";
1925 else if (link_info.pie && link_info.combreloc)
1926 return "ldscripts/${EMULATION_NAME}.xdc";
1927 EOF
1928 fi
1929 fragment <<EOF
1930 else if (link_info.pie)
1931 return "ldscripts/${EMULATION_NAME}.xd";
1932 EOF
1933 fi
1934 if test -n "$GENERATE_SHLIB_SCRIPT" ; then
1935 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1936 fragment <<EOF
1937 else if (link_info.shared && link_info.combreloc
1938 && link_info.relro && (link_info.flags & DF_BIND_NOW))
1939 return "ldscripts/${EMULATION_NAME}.xsw";
1940 else if (link_info.shared && link_info.combreloc)
1941 return "ldscripts/${EMULATION_NAME}.xsc";
1942 EOF
1943 fi
1944 fragment <<EOF
1945 else if (link_info.shared)
1946 return "ldscripts/${EMULATION_NAME}.xs";
1947 EOF
1948 fi
1949 if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1950 fragment <<EOF
1951 else if (link_info.combreloc && link_info.relro
1952 && (link_info.flags & DF_BIND_NOW))
1953 return "ldscripts/${EMULATION_NAME}.xw";
1954 else if (link_info.combreloc)
1955 return "ldscripts/${EMULATION_NAME}.xc";
1956 EOF
1957 fi
1958 fragment <<EOF
1959 else
1960 return "ldscripts/${EMULATION_NAME}.x";
1961 }
1962
1963 EOF
1964 fi
1965 fi
1966
1967 if test -n "$PARSE_AND_LIST_ARGS_CASES" -o x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1968
1969 if test -n "$PARSE_AND_LIST_PROLOGUE" ; then
1970 fragment <<EOF
1971 $PARSE_AND_LIST_PROLOGUE
1972 EOF
1973 fi
1974
1975 fragment <<EOF
1976
1977 #define OPTION_DISABLE_NEW_DTAGS (400)
1978 #define OPTION_ENABLE_NEW_DTAGS (OPTION_DISABLE_NEW_DTAGS + 1)
1979 #define OPTION_GROUP (OPTION_ENABLE_NEW_DTAGS + 1)
1980 #define OPTION_EH_FRAME_HDR (OPTION_GROUP + 1)
1981 #define OPTION_EXCLUDE_LIBS (OPTION_EH_FRAME_HDR + 1)
1982 #define OPTION_HASH_STYLE (OPTION_EXCLUDE_LIBS + 1)
1983 #define OPTION_BUILD_ID (OPTION_HASH_STYLE + 1)
1984
1985 static void
1986 gld${EMULATION_NAME}_add_options
1987 (int ns, char **shortopts, int nl, struct option **longopts,
1988 int nrl ATTRIBUTE_UNUSED, struct option **really_longopts ATTRIBUTE_UNUSED)
1989 {
1990 static const char xtra_short[] = "${PARSE_AND_LIST_SHORTOPTS}z:";
1991 static const struct option xtra_long[] = {
1992 {"build-id", optional_argument, NULL, OPTION_BUILD_ID},
1993 EOF
1994
1995 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1996 fragment <<EOF
1997 {"disable-new-dtags", no_argument, NULL, OPTION_DISABLE_NEW_DTAGS},
1998 {"enable-new-dtags", no_argument, NULL, OPTION_ENABLE_NEW_DTAGS},
1999 {"eh-frame-hdr", no_argument, NULL, OPTION_EH_FRAME_HDR},
2000 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
2001 {"hash-style", required_argument, NULL, OPTION_HASH_STYLE},
2002 {"Bgroup", no_argument, NULL, OPTION_GROUP},
2003 EOF
2004 fi
2005
2006 if test -n "$PARSE_AND_LIST_LONGOPTS" ; then
2007 fragment <<EOF
2008 $PARSE_AND_LIST_LONGOPTS
2009 EOF
2010 fi
2011
2012 fragment <<EOF
2013 {NULL, no_argument, NULL, 0}
2014 };
2015
2016 *shortopts = (char *) xrealloc (*shortopts, ns + sizeof (xtra_short));
2017 memcpy (*shortopts + ns, &xtra_short, sizeof (xtra_short));
2018 *longopts = (struct option *)
2019 xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
2020 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
2021 }
2022
2023 #define DEFAULT_BUILD_ID_STYLE "sha1"
2024
2025 static bfd_boolean
2026 gld${EMULATION_NAME}_handle_option (int optc)
2027 {
2028 switch (optc)
2029 {
2030 default:
2031 return FALSE;
2032
2033 case OPTION_BUILD_ID:
2034 if (link_info.emit_note_gnu_build_id != NULL)
2035 {
2036 free (link_info.emit_note_gnu_build_id);
2037 link_info.emit_note_gnu_build_id = NULL;
2038 }
2039 if (optarg == NULL)
2040 optarg = DEFAULT_BUILD_ID_STYLE;
2041 if (strcmp (optarg, "none"))
2042 link_info.emit_note_gnu_build_id = xstrdup (optarg);
2043 break;
2044
2045 EOF
2046
2047 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2048 fragment <<EOF
2049 case OPTION_DISABLE_NEW_DTAGS:
2050 link_info.new_dtags = FALSE;
2051 break;
2052
2053 case OPTION_ENABLE_NEW_DTAGS:
2054 link_info.new_dtags = TRUE;
2055 break;
2056
2057 case OPTION_EH_FRAME_HDR:
2058 link_info.eh_frame_hdr = TRUE;
2059 break;
2060
2061 case OPTION_GROUP:
2062 link_info.flags_1 |= (bfd_vma) DF_1_GROUP;
2063 /* Groups must be self-contained. */
2064 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
2065 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
2066 break;
2067
2068 case OPTION_EXCLUDE_LIBS:
2069 add_excluded_libs (optarg);
2070 break;
2071
2072 case OPTION_HASH_STYLE:
2073 link_info.emit_hash = FALSE;
2074 link_info.emit_gnu_hash = FALSE;
2075 if (strcmp (optarg, "sysv") == 0)
2076 link_info.emit_hash = TRUE;
2077 else if (strcmp (optarg, "gnu") == 0)
2078 link_info.emit_gnu_hash = TRUE;
2079 else if (strcmp (optarg, "both") == 0)
2080 {
2081 link_info.emit_hash = TRUE;
2082 link_info.emit_gnu_hash = TRUE;
2083 }
2084 else
2085 einfo (_("%P%F: invalid hash style \`%s'\n"), optarg);
2086 break;
2087
2088 case 'z':
2089 if (strcmp (optarg, "initfirst") == 0)
2090 link_info.flags_1 |= (bfd_vma) DF_1_INITFIRST;
2091 else if (strcmp (optarg, "interpose") == 0)
2092 link_info.flags_1 |= (bfd_vma) DF_1_INTERPOSE;
2093 else if (strcmp (optarg, "loadfltr") == 0)
2094 link_info.flags_1 |= (bfd_vma) DF_1_LOADFLTR;
2095 else if (strcmp (optarg, "nodefaultlib") == 0)
2096 link_info.flags_1 |= (bfd_vma) DF_1_NODEFLIB;
2097 else if (strcmp (optarg, "nodelete") == 0)
2098 link_info.flags_1 |= (bfd_vma) DF_1_NODELETE;
2099 else if (strcmp (optarg, "nodlopen") == 0)
2100 link_info.flags_1 |= (bfd_vma) DF_1_NOOPEN;
2101 else if (strcmp (optarg, "nodump") == 0)
2102 link_info.flags_1 |= (bfd_vma) DF_1_NODUMP;
2103 else if (strcmp (optarg, "now") == 0)
2104 {
2105 link_info.flags |= (bfd_vma) DF_BIND_NOW;
2106 link_info.flags_1 |= (bfd_vma) DF_1_NOW;
2107 }
2108 else if (strcmp (optarg, "lazy") == 0)
2109 {
2110 link_info.flags &= ~(bfd_vma) DF_BIND_NOW;
2111 link_info.flags_1 &= ~(bfd_vma) DF_1_NOW;
2112 }
2113 else if (strcmp (optarg, "origin") == 0)
2114 {
2115 link_info.flags |= (bfd_vma) DF_ORIGIN;
2116 link_info.flags_1 |= (bfd_vma) DF_1_ORIGIN;
2117 }
2118 else if (strcmp (optarg, "defs") == 0)
2119 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
2120 else if (strcmp (optarg, "muldefs") == 0)
2121 link_info.allow_multiple_definition = TRUE;
2122 else if (strcmp (optarg, "combreloc") == 0)
2123 link_info.combreloc = TRUE;
2124 else if (strcmp (optarg, "nocombreloc") == 0)
2125 link_info.combreloc = FALSE;
2126 else if (strcmp (optarg, "nocopyreloc") == 0)
2127 link_info.nocopyreloc = TRUE;
2128 else if (strcmp (optarg, "execstack") == 0)
2129 {
2130 link_info.execstack = TRUE;
2131 link_info.noexecstack = FALSE;
2132 }
2133 else if (strcmp (optarg, "noexecstack") == 0)
2134 {
2135 link_info.noexecstack = TRUE;
2136 link_info.execstack = FALSE;
2137 }
2138 EOF
2139
2140 if test -n "$COMMONPAGESIZE"; then
2141 fragment <<EOF
2142 else if (strcmp (optarg, "relro") == 0)
2143 link_info.relro = TRUE;
2144 else if (strcmp (optarg, "norelro") == 0)
2145 link_info.relro = FALSE;
2146 EOF
2147 fi
2148
2149 fragment <<EOF
2150 else if (CONST_STRNEQ (optarg, "max-page-size="))
2151 {
2152 char *end;
2153
2154 config.maxpagesize = strtoul (optarg + 14, &end, 0);
2155 if (*end || (config.maxpagesize & (config.maxpagesize - 1)) != 0)
2156 einfo (_("%P%F: invalid maxium page size \`%s'\n"),
2157 optarg + 14);
2158 ASSERT (default_target != NULL);
2159 bfd_emul_set_maxpagesize (default_target, config.maxpagesize);
2160 }
2161 else if (CONST_STRNEQ (optarg, "common-page-size="))
2162 {
2163 char *end;
2164 config.commonpagesize = strtoul (optarg + 17, &end, 0);
2165 if (*end
2166 || (config.commonpagesize & (config.commonpagesize - 1)) != 0)
2167 einfo (_("%P%F: invalid common page size \`%s'\n"),
2168 optarg + 17);
2169 ASSERT (default_target != NULL);
2170 bfd_emul_set_commonpagesize (default_target,
2171 config.commonpagesize);
2172 }
2173 /* What about the other Solaris -z options? FIXME. */
2174 break;
2175 EOF
2176 fi
2177
2178 if test -n "$PARSE_AND_LIST_ARGS_CASES" ; then
2179 fragment <<EOF
2180 $PARSE_AND_LIST_ARGS_CASES
2181 EOF
2182 fi
2183
2184 fragment <<EOF
2185 }
2186
2187 return TRUE;
2188 }
2189
2190 EOF
2191
2192 if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
2193 fragment <<EOF
2194
2195 static void
2196 gld${EMULATION_NAME}_list_options (FILE * file)
2197 {
2198 fprintf (file, _("\
2199 --build-id[=STYLE] Generate build ID note\n"));
2200 EOF
2201
2202 if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2203 fragment <<EOF
2204 fprintf (file, _("\
2205 -Bgroup Selects group name lookup rules for DSO\n"));
2206 fprintf (file, _("\
2207 --disable-new-dtags Disable new dynamic tags\n"));
2208 fprintf (file, _("\
2209 --enable-new-dtags Enable new dynamic tags\n"));
2210 fprintf (file, _("\
2211 --eh-frame-hdr Create .eh_frame_hdr section\n"));
2212 fprintf (file, _("\
2213 --hash-style=STYLE Set hash style to sysv, gnu or both\n"));
2214 fprintf (file, _("\
2215 -z combreloc Merge dynamic relocs into one section and sort\n"));
2216 fprintf (file, _("\
2217 -z defs Report unresolved symbols in object files.\n"));
2218 fprintf (file, _("\
2219 -z execstack Mark executable as requiring executable stack\n"));
2220 fprintf (file, _("\
2221 -z initfirst Mark DSO to be initialized first at runtime\n"));
2222 fprintf (file, _("\
2223 -z interpose Mark object to interpose all DSOs but executable\n"));
2224 fprintf (file, _("\
2225 -z lazy Mark object lazy runtime binding (default)\n"));
2226 fprintf (file, _("\
2227 -z loadfltr Mark object requiring immediate process\n"));
2228 fprintf (file, _("\
2229 -z muldefs Allow multiple definitions\n"));
2230 fprintf (file, _("\
2231 -z nocombreloc Don't merge dynamic relocs into one section\n"));
2232 fprintf (file, _("\
2233 -z nocopyreloc Don't create copy relocs\n"));
2234 fprintf (file, _("\
2235 -z nodefaultlib Mark object not to use default search paths\n"));
2236 fprintf (file, _("\
2237 -z nodelete Mark DSO non-deletable at runtime\n"));
2238 fprintf (file, _("\
2239 -z nodlopen Mark DSO not available to dlopen\n"));
2240 fprintf (file, _("\
2241 -z nodump Mark DSO not available to dldump\n"));
2242 fprintf (file, _("\
2243 -z noexecstack Mark executable as not requiring executable stack\n"));
2244 EOF
2245
2246 if test -n "$COMMONPAGESIZE"; then
2247 fragment <<EOF
2248 fprintf (file, _("\
2249 -z norelro Don't create RELRO program header\n"));
2250 EOF
2251 fi
2252
2253 fragment <<EOF
2254 fprintf (file, _("\
2255 -z now Mark object non-lazy runtime binding\n"));
2256 fprintf (file, _("\
2257 -z origin Mark object requiring immediate \$ORIGIN\n\
2258 processing at runtime\n"));
2259 EOF
2260
2261 if test -n "$COMMONPAGESIZE"; then
2262 fragment <<EOF
2263 fprintf (file, _("\
2264 -z relro Create RELRO program header\n"));
2265 EOF
2266 fi
2267
2268 fragment <<EOF
2269 fprintf (file, _("\
2270 -z max-page-size=SIZE Set maximum page size to SIZE\n"));
2271 fprintf (file, _("\
2272 -z common-page-size=SIZE Set common page size to SIZE\n"));
2273 fprintf (file, _("\
2274 -z KEYWORD Ignored for Solaris compatibility\n"));
2275 EOF
2276 fi
2277
2278 if test -n "$PARSE_AND_LIST_OPTIONS" ; then
2279 fragment <<EOF
2280 $PARSE_AND_LIST_OPTIONS
2281 EOF
2282 fi
2283
2284 fragment <<EOF
2285 }
2286 EOF
2287
2288 if test -n "$PARSE_AND_LIST_EPILOGUE" ; then
2289 fragment <<EOF
2290 $PARSE_AND_LIST_EPILOGUE
2291 EOF
2292 fi
2293 fi
2294 else
2295 fragment <<EOF
2296 #define gld${EMULATION_NAME}_add_options NULL
2297 #define gld${EMULATION_NAME}_handle_option NULL
2298 EOF
2299 if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
2300 fragment <<EOF
2301 #define gld${EMULATION_NAME}_list_options NULL
2302 EOF
2303 fi
2304 fi
2305
2306 fragment <<EOF
2307
2308 struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
2309 {
2310 ${LDEMUL_BEFORE_PARSE-gld${EMULATION_NAME}_before_parse},
2311 ${LDEMUL_SYSLIB-syslib_default},
2312 ${LDEMUL_HLL-hll_default},
2313 ${LDEMUL_AFTER_PARSE-after_parse_default},
2314 ${LDEMUL_AFTER_OPEN-gld${EMULATION_NAME}_after_open},
2315 ${LDEMUL_AFTER_ALLOCATION-after_allocation_default},
2316 ${LDEMUL_SET_OUTPUT_ARCH-set_output_arch_default},
2317 ${LDEMUL_CHOOSE_TARGET-ldemul_default_target},
2318 ${LDEMUL_BEFORE_ALLOCATION-gld${EMULATION_NAME}_before_allocation},
2319 ${LDEMUL_GET_SCRIPT-gld${EMULATION_NAME}_get_script},
2320 "${EMULATION_NAME}",
2321 "${OUTPUT_FORMAT}",
2322 ${LDEMUL_FINISH-gld${EMULATION_NAME}_finish},
2323 ${LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS-NULL},
2324 ${LDEMUL_OPEN_DYNAMIC_ARCHIVE-gld${EMULATION_NAME}_open_dynamic_archive},
2325 ${LDEMUL_PLACE_ORPHAN-gld${EMULATION_NAME}_place_orphan},
2326 ${LDEMUL_SET_SYMBOLS-NULL},
2327 ${LDEMUL_PARSE_ARGS-NULL},
2328 gld${EMULATION_NAME}_add_options,
2329 gld${EMULATION_NAME}_handle_option,
2330 ${LDEMUL_UNRECOGNIZED_FILE-NULL},
2331 ${LDEMUL_LIST_OPTIONS-gld${EMULATION_NAME}_list_options},
2332 ${LDEMUL_RECOGNIZED_FILE-gld${EMULATION_NAME}_load_symbols},
2333 ${LDEMUL_FIND_POTENTIAL_LIBRARIES-NULL},
2334 ${LDEMUL_NEW_VERS_PATTERN-NULL}
2335 };
2336 EOF