2007-07-13 Roland McGrath <roland@redhat.com>
[deliverable/binutils-gdb.git] / ld / emultempl / elf32.em
CommitLineData
252b5132
RH
1# This shell script emits a C file. -*- C -*-
2# It does some substitutions.
3# This file is now misnamed, because it supports both 32 bit and 64 bit
4# ELF emulations.
5test -z "${ELFSIZE}" && ELFSIZE=32
86af25fe
L
6if [ -z "$MACHINE" ]; then
7 OUTPUT_ARCH=${ARCH}
8else
9 OUTPUT_ARCH=${ARCH}:${MACHINE}
10fi
252b5132
RH
11cat >e${EMULATION_NAME}.c <<EOF
12/* This file is is generated by a shell script. DO NOT EDIT! */
13
14/* ${ELFSIZE} bit ELF emulation code for ${EMULATION_NAME}
e3dc8847 15 Copyright 1991, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
3db64b00 16 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
252b5132
RH
17 Written by Steve Chamberlain <sac@cygnus.com>
18 ELF support by Ian Lance Taylor <ian@cygnus.com>
19
f96b4a7b
NC
20 This file is part of the GNU Binutils.
21
22 This program is free software; you can redistribute it and/or modify
23 it under the terms of the GNU General Public License as published by
24 the Free Software Foundation; either version 3 of the License, or
25 (at your option) any later version.
26
27 This program is distributed in the hope that it will be useful,
28 but WITHOUT ANY WARRANTY; without even the implied warranty of
29 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30 GNU General Public License for more details.
31
32 You should have received a copy of the GNU General Public License
33 along with this program; if not, write to the Free Software
34 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
35 MA 02110-1301, USA. */
252b5132
RH
36
37#define TARGET_IS_${EMULATION_NAME}
38
252b5132 39#include "sysdep.h"
3db64b00 40#include "bfd.h"
1c9acd94 41#include "libiberty.h"
3882b010 42#include "safe-ctype.h"
fcf65871 43#include "getopt.h"
252b5132
RH
44
45#include "bfdlink.h"
46
47#include "ld.h"
48#include "ldmain.h"
252b5132
RH
49#include "ldmisc.h"
50#include "ldexp.h"
51#include "ldlang.h"
b71e2778
AM
52#include "ldfile.h"
53#include "ldemul.h"
df2a7313 54#include <ldgram.h>
e0ee487b 55#include "elf/common.h"
ecca9871 56#include "elf-bfd.h"
252b5132 57
0c7a8e5a
AM
58/* Declare functions used by various EXTRA_EM_FILEs. */
59static void gld${EMULATION_NAME}_before_parse (void);
60static void gld${EMULATION_NAME}_after_open (void);
61static void gld${EMULATION_NAME}_before_allocation (void);
7b986e99 62static bfd_boolean gld${EMULATION_NAME}_place_orphan (asection *s);
8ded5a0f 63static void gld${EMULATION_NAME}_finish (void);
252b5132 64
41392f03
AM
65EOF
66
d3989512
JJ
67if [ "x${USE_LIBPATH}" = xyes ] ; then
68 case ${target} in
711c0baa 69 *-*-linux-* | *-*-k*bsd*-*)
d3989512 70 cat >>e${EMULATION_NAME}.c <<EOF
0b48acfe 71#ifdef HAVE_GLOB
d3989512 72#include <glob.h>
0b48acfe 73#endif
d3989512
JJ
74EOF
75 ;;
76 esac
77fi
78
41392f03
AM
79# Import any needed special functions and/or overrides.
80#
8ded5a0f 81. ${srcdir}/emultempl/elf-generic.em
41392f03
AM
82if test -n "$EXTRA_EM_FILE" ; then
83. ${srcdir}/emultempl/${EXTRA_EM_FILE}.em
84fi
85
f813923c 86# Functions in this file can be overridden by setting the LDEMUL_* shell
41392f03
AM
87# variables. If the name of the overriding function is the same as is
88# defined in this file, then don't output this file's version.
89# If a different overriding name is given then output the standard function
90# as presumably it is called from the overriding function.
91#
92if test x"$LDEMUL_BEFORE_PARSE" != xgld"$EMULATION_NAME"_before_parse; then
93cat >>e${EMULATION_NAME}.c <<EOF
94
252b5132 95static void
0c7a8e5a 96gld${EMULATION_NAME}_before_parse (void)
252b5132 97{
5e2f1575 98 ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
b34976b6
AM
99 config.dynamic_link = ${DYNAMIC_LINK-TRUE};
100 config.has_shared = `if test -n "$GENERATE_SHLIB_SCRIPT" ; then echo TRUE ; else echo FALSE ; fi`;
252b5132
RH
101}
102
41392f03
AM
103EOF
104fi
105
4a43e768
AM
106if test x"$LDEMUL_RECOGNIZED_FILE" != xgld"${EMULATION_NAME}"_load_symbols; then
107cat >>e${EMULATION_NAME}.c <<EOF
108/* Handle as_needed DT_NEEDED. */
109
110static bfd_boolean
111gld${EMULATION_NAME}_load_symbols (lang_input_statement_type *entry)
112{
e56f61be 113 int class = 0;
4a43e768
AM
114
115 /* Tell the ELF linker that we don't want the output file to have a
116 DT_NEEDED entry for this file, unless it is used to resolve
117 references in a regular object. */
e56f61be
L
118 if (entry->as_needed)
119 class = DYN_AS_NEEDED;
120
121 /* Tell the ELF linker that we don't want the output file to have a
122 DT_NEEDED entry for any dynamic library in DT_NEEDED tags from
123 this file at all. */
124 if (!entry->add_needed)
125 class |= DYN_NO_ADD_NEEDED;
126
12b9ff6c
L
127 if (entry->just_syms_flag
128 && (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) != 0)
129 einfo (_("%P%F: --just-symbols may not be used on DSO: %B\n"),
130 entry->the_bfd);
131
e56f61be
L
132 if (!class
133 || (bfd_get_file_flags (entry->the_bfd) & DYNAMIC) == 0)
134 return FALSE;
135
136 bfd_elf_set_dyn_lib_class (entry->the_bfd, class);
4a43e768
AM
137
138 /* Continue on with normal load_symbols processing. */
139 return FALSE;
140}
141EOF
142fi
143
41392f03 144cat >>e${EMULATION_NAME}.c <<EOF
252b5132
RH
145
146/* These variables are required to pass information back and forth
147 between after_open and check_needed and stat_needed and vercheck. */
148
149static struct bfd_link_needed_list *global_needed;
150static struct stat global_stat;
e13629bc 151static lang_input_statement_type *global_found;
252b5132 152static struct bfd_link_needed_list *global_vercheck_needed;
b34976b6 153static bfd_boolean global_vercheck_failed;
252b5132 154
252b5132 155
04925e1e
AM
156/* On Linux, it's possible to have different versions of the same
157 shared library linked against different versions of libc. The
158 dynamic linker somehow tags which libc version to use in
159 /etc/ld.so.cache, and, based on the libc that it sees in the
160 executable, chooses which version of the shared library to use.
252b5132 161
04925e1e
AM
162 We try to do a similar check here by checking whether this shared
163 library needs any other shared libraries which may conflict with
164 libraries we have already included in the link. If it does, we
165 skip it, and try to find another shared library farther on down the
166 link path.
252b5132 167
04925e1e
AM
168 This is called via lang_for_each_input_file.
169 GLOBAL_VERCHECK_NEEDED is the list of objects needed by the object
f813923c 170 which we are checking. This sets GLOBAL_VERCHECK_FAILED if we find
04925e1e 171 a conflicting version. */
252b5132 172
04925e1e 173static void
0c7a8e5a 174gld${EMULATION_NAME}_vercheck (lang_input_statement_type *s)
04925e1e 175{
1c9acd94 176 const char *soname;
04925e1e 177 struct bfd_link_needed_list *l;
252b5132 178
04925e1e
AM
179 if (global_vercheck_failed)
180 return;
181 if (s->the_bfd == NULL
182 || (bfd_get_file_flags (s->the_bfd) & DYNAMIC) == 0)
183 return;
252b5132 184
04925e1e
AM
185 soname = bfd_elf_get_dt_soname (s->the_bfd);
186 if (soname == NULL)
fed2999d 187 soname = lbasename (bfd_get_filename (s->the_bfd));
04925e1e
AM
188
189 for (l = global_vercheck_needed; l != NULL; l = l->next)
190 {
191 const char *suffix;
192
1c9acd94 193 if (strcmp (soname, l->name) == 0)
04925e1e
AM
194 {
195 /* Probably can't happen, but it's an easy check. */
196 continue;
252b5132
RH
197 }
198
04925e1e 199 if (strchr (l->name, '/') != NULL)
252b5132
RH
200 continue;
201
04925e1e
AM
202 suffix = strstr (l->name, ".so.");
203 if (suffix == NULL)
204 continue;
205
206 suffix += sizeof ".so." - 1;
207
1c9acd94 208 if (strncmp (soname, l->name, suffix - l->name) == 0)
04925e1e
AM
209 {
210 /* Here we know that S is a dynamic object FOO.SO.VER1, and
0c7a8e5a
AM
211 the object we are considering needs a dynamic object
212 FOO.SO.VER2, and VER1 and VER2 are different. This
213 appears to be a version mismatch, so we tell the caller
214 to try a different version of this library. */
b34976b6 215 global_vercheck_failed = TRUE;
04925e1e
AM
216 return;
217 }
252b5132
RH
218 }
219}
220
252b5132 221
04925e1e
AM
222/* See if an input file matches a DT_NEEDED entry by running stat on
223 the file. */
224
225static void
0c7a8e5a 226gld${EMULATION_NAME}_stat_needed (lang_input_statement_type *s)
252b5132 227{
04925e1e
AM
228 struct stat st;
229 const char *suffix;
230 const char *soname;
252b5132 231
e13629bc 232 if (global_found != NULL)
04925e1e
AM
233 return;
234 if (s->the_bfd == NULL)
235 return;
e13629bc
AM
236
237 /* If this input file was an as-needed entry, and wasn't found to be
238 needed at the stage it was linked, then don't say we have loaded it. */
239 if ((bfd_elf_get_dyn_lib_class (s->the_bfd) & DYN_AS_NEEDED) != 0)
7cedef86 240 return;
04925e1e
AM
241
242 if (bfd_stat (s->the_bfd, &st) != 0)
252b5132 243 {
04925e1e
AM
244 einfo ("%P:%B: bfd_stat failed: %E\n", s->the_bfd);
245 return;
246 }
252b5132 247
9eabd475
ZW
248 /* Some operating systems, e.g. Windows, do not provide a meaningful
249 st_ino; they always set it to zero. (Windows does provide a
250 meaningful st_dev.) Do not indicate a duplicate library in that
251 case. While there is no guarantee that a system that provides
252 meaningful inode numbers will never set st_ino to zero, this is
253 merely an optimization, so we do not need to worry about false
254 negatives. */
04925e1e 255 if (st.st_dev == global_stat.st_dev
9eabd475
ZW
256 && st.st_ino == global_stat.st_ino
257 && st.st_ino != 0)
04925e1e 258 {
e13629bc 259 global_found = s;
04925e1e
AM
260 return;
261 }
252b5132 262
04925e1e
AM
263 /* We issue a warning if it looks like we are including two
264 different versions of the same shared library. For example,
265 there may be a problem if -lc picks up libc.so.6 but some other
266 shared library has a DT_NEEDED entry of libc.so.5. This is a
f813923c 267 heuristic test, and it will only work if the name looks like
04925e1e
AM
268 NAME.so.VERSION. FIXME: Depending on file names is error-prone.
269 If we really want to issue warnings about mixing version numbers
270 of shared libraries, we need to find a better way. */
252b5132 271
04925e1e
AM
272 if (strchr (global_needed->name, '/') != NULL)
273 return;
274 suffix = strstr (global_needed->name, ".so.");
275 if (suffix == NULL)
276 return;
277 suffix += sizeof ".so." - 1;
252b5132 278
04925e1e
AM
279 soname = bfd_elf_get_dt_soname (s->the_bfd);
280 if (soname == NULL)
fed2999d 281 soname = lbasename (s->filename);
252b5132 282
cde43e70 283 if (strncmp (soname, global_needed->name, suffix - global_needed->name) == 0)
04925e1e 284 einfo ("%P: warning: %s, needed by %B, may conflict with %s\n",
1c9acd94 285 global_needed->name, global_needed->by, soname);
252b5132
RH
286}
287
e56f61be
L
288struct dt_needed
289{
290 bfd *by;
291 const char *name;
292};
04925e1e 293
252b5132
RH
294/* This function is called for each possible name for a dynamic object
295 named by a DT_NEEDED entry. The FORCE parameter indicates whether
296 to skip the check for a conflicting version. */
297
b34976b6 298static bfd_boolean
e56f61be
L
299gld${EMULATION_NAME}_try_needed (struct dt_needed *needed,
300 int force)
252b5132
RH
301{
302 bfd *abfd;
e56f61be 303 const char *name = needed->name;
ec4eb78a 304 const char *soname;
e56f61be 305 int class;
252b5132
RH
306
307 abfd = bfd_openr (name, bfd_get_target (output_bfd));
308 if (abfd == NULL)
b34976b6 309 return FALSE;
252b5132
RH
310 if (! bfd_check_format (abfd, bfd_object))
311 {
cde43e70 312 bfd_close (abfd);
b34976b6 313 return FALSE;
252b5132
RH
314 }
315 if ((bfd_get_file_flags (abfd) & DYNAMIC) == 0)
316 {
cde43e70 317 bfd_close (abfd);
b34976b6 318 return FALSE;
252b5132
RH
319 }
320
c4bb8067
L
321 /* For DT_NEEDED, they have to match. */
322 if (abfd->xvec != output_bfd->xvec)
323 {
324 bfd_close (abfd);
b34976b6 325 return FALSE;
c4bb8067
L
326 }
327
252b5132
RH
328 /* Check whether this object would include any conflicting library
329 versions. If FORCE is set, then we skip this check; we use this
330 the second time around, if we couldn't find any compatible
331 instance of the shared library. */
332
333 if (! force)
334 {
335 struct bfd_link_needed_list *needed;
336
337 if (! bfd_elf_get_bfd_needed_list (abfd, &needed))
338 einfo ("%F%P:%B: bfd_elf_get_bfd_needed_list failed: %E\n", abfd);
339
340 if (needed != NULL)
341 {
342 global_vercheck_needed = needed;
b34976b6 343 global_vercheck_failed = FALSE;
252b5132
RH
344 lang_for_each_input_file (gld${EMULATION_NAME}_vercheck);
345 if (global_vercheck_failed)
346 {
cde43e70 347 bfd_close (abfd);
b34976b6 348 /* Return FALSE to force the caller to move on to try
0c7a8e5a 349 another file on the search path. */
b34976b6 350 return FALSE;
252b5132
RH
351 }
352
353 /* But wait! It gets much worse. On Linux, if a shared
0c7a8e5a
AM
354 library does not use libc at all, we are supposed to skip
355 it the first time around in case we encounter a shared
356 library later on with the same name which does use the
357 version of libc that we want. This is much too horrible
358 to use on any system other than Linux. */
252b5132
RH
359
360EOF
361case ${target} in
711c0baa 362 *-*-linux-* | *-*-k*bsd*-*)
252b5132
RH
363 cat >>e${EMULATION_NAME}.c <<EOF
364 {
365 struct bfd_link_needed_list *l;
366
367 for (l = needed; l != NULL; l = l->next)
0112cd26 368 if (CONST_STRNEQ (l->name, "libc.so"))
252b5132
RH
369 break;
370 if (l == NULL)
371 {
cde43e70 372 bfd_close (abfd);
b34976b6 373 return FALSE;
252b5132
RH
374 }
375 }
376
377EOF
378 ;;
379esac
380cat >>e${EMULATION_NAME}.c <<EOF
381 }
382 }
383
384 /* We've found a dynamic object matching the DT_NEEDED entry. */
385
04925e1e
AM
386 /* We have already checked that there is no other input file of the
387 same name. We must now check again that we are not including the
388 same file twice. We need to do this because on many systems
389 libc.so is a symlink to, e.g., libc.so.1. The SONAME entry will
390 reference libc.so.1. If we have already included libc.so, we
391 don't want to include libc.so.1 if they are the same file, and we
392 can only check that using stat. */
393
394 if (bfd_stat (abfd, &global_stat) != 0)
395 einfo ("%F%P:%B: bfd_stat failed: %E\n", abfd);
ec4eb78a
L
396
397 /* First strip off everything before the last '/'. */
fed2999d 398 soname = lbasename (abfd->filename);
ec4eb78a
L
399
400 if (trace_file_tries)
401 info_msg (_("found %s at %s\n"), soname, name);
402
e13629bc 403 global_found = NULL;
04925e1e 404 lang_for_each_input_file (gld${EMULATION_NAME}_stat_needed);
e13629bc 405 if (global_found != NULL)
04925e1e 406 {
b34976b6 407 /* Return TRUE to indicate that we found the file, even though
0c7a8e5a 408 we aren't going to do anything with it. */
b34976b6 409 return TRUE;
04925e1e
AM
410 }
411
4a43e768
AM
412 /* Specify the soname to use. */
413 bfd_elf_set_dt_needed_name (abfd, soname);
04925e1e 414
4a43e768
AM
415 /* Tell the ELF linker that we don't want the output file to have a
416 DT_NEEDED entry for this file, unless it is used to resolve
417 references in a regular object. */
e56f61be
L
418 class = DYN_DT_NEEDED;
419
420 /* Tell the ELF linker that we don't want the output file to have a
421 DT_NEEDED entry for this file at all if the entry is from a file
422 with DYN_NO_ADD_NEEDED. */
7e9f0867
AM
423 if (needed->by != NULL
424 && (bfd_elf_get_dyn_lib_class (needed->by) & DYN_NO_ADD_NEEDED) != 0)
e56f61be
L
425 class |= DYN_NO_NEEDED | DYN_NO_ADD_NEEDED;
426
427 bfd_elf_set_dyn_lib_class (abfd, class);
04925e1e
AM
428
429 /* Add this file into the symbol table. */
430 if (! bfd_link_add_symbols (abfd, &link_info))
431 einfo ("%F%B: could not read symbols: %E\n", abfd);
432
b34976b6 433 return TRUE;
04925e1e
AM
434}
435
436
437/* Search for a needed file in a path. */
438
b34976b6 439static bfd_boolean
e56f61be
L
440gld${EMULATION_NAME}_search_needed (const char *path,
441 struct dt_needed *n, int force)
04925e1e
AM
442{
443 const char *s;
e56f61be 444 const char *name = n->name;
04925e1e 445 size_t len;
e56f61be 446 struct dt_needed needed;
04925e1e 447
cc5ce052 448 if (name[0] == '/')
e56f61be 449 return gld${EMULATION_NAME}_try_needed (n, force);
cc5ce052 450
04925e1e 451 if (path == NULL || *path == '\0')
b34976b6 452 return FALSE;
e56f61be
L
453
454 needed.by = n->by;
455 needed.name = n->name;
456
04925e1e
AM
457 len = strlen (name);
458 while (1)
459 {
460 char *filename, *sset;
461
c76308d2 462 s = strchr (path, config.rpath_separator);
04925e1e
AM
463 if (s == NULL)
464 s = path + strlen (path);
465
466 filename = (char *) xmalloc (s - path + len + 2);
467 if (s == path)
468 sset = filename;
469 else
470 {
471 memcpy (filename, path, s - path);
472 filename[s - path] = '/';
473 sset = filename + (s - path) + 1;
474 }
475 strcpy (sset, name);
476
e56f61be
L
477 needed.name = filename;
478 if (gld${EMULATION_NAME}_try_needed (&needed, force))
b34976b6 479 return TRUE;
04925e1e
AM
480
481 free (filename);
482
483 if (*s == '\0')
484 break;
485 path = s + 1;
486 }
487
b34976b6 488 return FALSE;
04925e1e
AM
489}
490
491EOF
9c8ebd6a 492if [ "x${USE_LIBPATH}" = xyes ] ; then
3dc16cab 493 cat >>e${EMULATION_NAME}.c <<EOF
9c8ebd6a 494
c76308d2
RS
495/* Add the sysroot to every entry in a path separated by
496 config.rpath_separator. */
9c8ebd6a
DJ
497
498static char *
0c7a8e5a 499gld${EMULATION_NAME}_add_sysroot (const char *path)
9c8ebd6a
DJ
500{
501 int len, colons, i;
502 char *ret, *p;
503
504 len = strlen (path);
505 colons = 0;
506 i = 0;
507 while (path[i])
c76308d2 508 if (path[i++] == config.rpath_separator)
9c8ebd6a
DJ
509 colons++;
510
511 if (path[i])
512 colons++;
513
42644a89 514 len = len + (colons + 1) * strlen (ld_sysroot);
9c8ebd6a
DJ
515 ret = xmalloc (len + 1);
516 strcpy (ret, ld_sysroot);
517 p = ret + strlen (ret);
518 i = 0;
519 while (path[i])
c76308d2 520 if (path[i] == config.rpath_separator)
9c8ebd6a 521 {
0c7a8e5a 522 *p++ = path[i++];
9c8ebd6a
DJ
523 strcpy (p, ld_sysroot);
524 p = p + strlen (p);
9c8ebd6a
DJ
525 }
526 else
527 *p++ = path[i++];
528
529 *p = 0;
530 return ret;
531}
04925e1e 532
3dc16cab
DJ
533EOF
534 case ${target} in
ebe1fac1
NC
535 *-*-freebsd* | *-*-dragonfly*)
536 cat >>e${EMULATION_NAME}.c <<EOF
537/* Read the system search path the FreeBSD way rather than the Linux way. */
538#ifdef HAVE_ELF_HINTS_H
539#include <elf-hints.h>
540#else
541#include "elf-hints-local.h"
542#endif
543
544static bfd_boolean
545gld${EMULATION_NAME}_check_ld_elf_hints (const char *name, int force)
546{
547 static bfd_boolean initialized;
548 static char *ld_elf_hints;
549 struct dt_needed needed;
550
551 if (!initialized)
552 {
553 FILE *f;
554 char *tmppath;
555
556 tmppath = concat (ld_sysroot, _PATH_ELF_HINTS, NULL);
557 f = fopen (tmppath, FOPEN_RB);
558 free (tmppath);
559 if (f != NULL)
560 {
561 struct elfhints_hdr hdr;
562
563 if (fread (&hdr, 1, sizeof (hdr), f) == sizeof (hdr)
564 && hdr.magic == ELFHINTS_MAGIC
565 && hdr.version == 1)
566 {
567 if (fseek (f, hdr.strtab + hdr.dirlist, SEEK_SET) != -1)
568 {
569 char *b;
570
571 b = xmalloc (hdr.dirlistlen + 1);
572 if (fread (b, 1, hdr.dirlistlen + 1, f) ==
573 hdr.dirlistlen + 1)
574 ld_elf_hints = gld${EMULATION_NAME}_add_sysroot (b);
e13629bc 575
ebe1fac1
NC
576 free (b);
577 }
578 }
579 fclose (f);
580 }
581
582 initialized = TRUE;
583 }
584
585 if (ld_elf_hints == NULL)
586 return FALSE;
587
588 needed.by = NULL;
589 needed.name = name;
590 return gld${EMULATION_NAME}_search_needed (ld_elf_hints, & needed,
e13629bc 591 force);
ebe1fac1
NC
592}
593EOF
594 # FreeBSD
595 ;;
596
711c0baa 597 *-*-linux-* | *-*-k*bsd*-*)
3dc16cab 598 cat >>e${EMULATION_NAME}.c <<EOF
04925e1e
AM
599/* For a native linker, check the file /etc/ld.so.conf for directories
600 in which we may find shared libraries. /etc/ld.so.conf is really
482e8b32 601 only meaningful on Linux. */
04925e1e 602
d3989512 603struct gld${EMULATION_NAME}_ld_so_conf
04925e1e 604{
d3989512
JJ
605 char *path;
606 size_t len, alloc;
607};
04925e1e 608
dfcffada 609static bfd_boolean
d3989512
JJ
610gld${EMULATION_NAME}_parse_ld_so_conf
611 (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename);
612
613static void
614gld${EMULATION_NAME}_parse_ld_so_conf_include
615 (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename,
616 const char *pattern)
617{
618 char *newp = NULL;
0b48acfe 619#ifdef HAVE_GLOB
d3989512 620 glob_t gl;
0b48acfe 621#endif
d3989512
JJ
622
623 if (pattern[0] != '/')
04925e1e 624 {
d3989512
JJ
625 char *p = strrchr (filename, '/');
626 size_t patlen = strlen (pattern) + 1;
04925e1e 627
d3989512
JJ
628 newp = xmalloc (p - filename + 1 + patlen);
629 memcpy (newp, filename, p - filename + 1);
630 memcpy (newp + (p - filename + 1), pattern, patlen);
631 pattern = newp;
632 }
04925e1e 633
0b48acfe 634#ifdef HAVE_GLOB
d3989512
JJ
635 if (glob (pattern, 0, NULL, &gl) == 0)
636 {
637 size_t i;
638
639 for (i = 0; i < gl.gl_pathc; ++i)
640 gld${EMULATION_NAME}_parse_ld_so_conf (info, gl.gl_pathv[i]);
641 globfree (&gl);
642 }
0b48acfe
MM
643#else
644 /* If we do not have glob, treat the pattern as a literal filename. */
645 gld${EMULATION_NAME}_parse_ld_so_conf (info, pattern);
646#endif
d3989512
JJ
647
648 if (newp)
649 free (newp);
650}
651
dfcffada 652static bfd_boolean
d3989512
JJ
653gld${EMULATION_NAME}_parse_ld_so_conf
654 (struct gld${EMULATION_NAME}_ld_so_conf *info, const char *filename)
655{
656 FILE *f = fopen (filename, FOPEN_RT);
563f4125
JJ
657 char *line;
658 size_t linelen;
d3989512
JJ
659
660 if (f == NULL)
dfcffada 661 return FALSE;
d3989512 662
563f4125
JJ
663 linelen = 256;
664 line = xmalloc (linelen);
665 do
d3989512 666 {
563f4125
JJ
667 char *p = line, *q;
668
669 /* Normally this would use getline(3), but we need to be portable. */
670 while ((q = fgets (p, linelen - (p - line), f)) != NULL
671 && strlen (q) == linelen - (p - line) - 1
672 && line[linelen - 2] != '\n')
673 {
674 line = xrealloc (line, 2 * linelen);
675 p = line + linelen - 1;
676 linelen += linelen;
677 }
678
679 if (q == NULL && p == line)
680 break;
d3989512
JJ
681
682 p = strchr (line, '\n');
683 if (p)
684 *p = '\0';
685
686 /* Because the file format does not know any form of quoting we
687 can search forward for the next '#' character and if found
688 make it terminating the line. */
689 p = strchr (line, '#');
690 if (p)
691 *p = '\0';
692
693 /* Remove leading whitespace. NUL is no whitespace character. */
694 p = line;
695 while (*p == ' ' || *p == '\f' || *p == '\r' || *p == '\t' || *p == '\v')
696 ++p;
697
698 /* If the line is blank it is ignored. */
699 if (p[0] == '\0')
700 continue;
04925e1e 701
0112cd26 702 if (CONST_STRNEQ (p, "include") && (p[7] == ' ' || p[7] == '\t'))
d3989512
JJ
703 {
704 char *dir, c;
705 p += 8;
706 do
04925e1e 707 {
d3989512
JJ
708 while (*p == ' ' || *p == '\t')
709 ++p;
04925e1e 710
d3989512
JJ
711 if (*p == '\0')
712 break;
252b5132 713
d3989512
JJ
714 dir = p;
715
716 while (*p != ' ' && *p != '\t' && *p)
717 ++p;
718
719 c = *p;
720 *p++ = '\0';
721 if (dir[0] != '\0')
722 gld${EMULATION_NAME}_parse_ld_so_conf_include (info, filename,
723 dir);
724 }
725 while (c != '\0');
726 }
727 else
728 {
729 char *dir = p;
730 while (*p && *p != '=' && *p != ' ' && *p != '\t' && *p != '\f'
731 && *p != '\r' && *p != '\v')
732 ++p;
733
734 while (p != dir && p[-1] == '/')
735 --p;
736 if (info->path == NULL)
737 {
738 info->alloc = p - dir + 1 + 256;
739 info->path = xmalloc (info->alloc);
740 info->len = 0;
741 }
04925e1e
AM
742 else
743 {
d3989512
JJ
744 if (info->len + 1 + (p - dir) >= info->alloc)
745 {
746 info->alloc += p - dir + 256;
747 info->path = xrealloc (info->path, info->alloc);
748 }
c76308d2 749 info->path[info->len++] = config.rpath_separator;
04925e1e 750 }
d3989512
JJ
751 memcpy (info->path + info->len, dir, p - dir);
752 info->len += p - dir;
753 info->path[info->len] = '\0';
754 }
755 }
563f4125 756 while (! feof (f));
d3989512
JJ
757 free (line);
758 fclose (f);
dfcffada 759 return TRUE;
d3989512 760}
252b5132 761
d3989512
JJ
762static bfd_boolean
763gld${EMULATION_NAME}_check_ld_so_conf (const char *name, int force)
764{
765 static bfd_boolean initialized;
766 static char *ld_so_conf;
767 struct dt_needed needed;
252b5132 768
d3989512
JJ
769 if (! initialized)
770 {
771 char *tmppath;
772 struct gld${EMULATION_NAME}_ld_so_conf info;
9c8ebd6a 773
d3989512
JJ
774 info.path = NULL;
775 info.len = info.alloc = 0;
dfcffada
AM
776 tmppath = concat (ld_sysroot, "${prefix}/etc/ld.so.conf", NULL);
777 if (!gld${EMULATION_NAME}_parse_ld_so_conf (&info, tmppath))
778 {
779 free (tmppath);
780 tmppath = concat (ld_sysroot, "/etc/ld.so.conf", NULL);
781 gld${EMULATION_NAME}_parse_ld_so_conf (&info, tmppath);
782 }
d3989512 783 free (tmppath);
dfcffada 784
d3989512
JJ
785 if (info.path)
786 {
787 char *d = gld${EMULATION_NAME}_add_sysroot (info.path);
788 free (info.path);
789 ld_so_conf = d;
04925e1e 790 }
b34976b6 791 initialized = TRUE;
04925e1e 792 }
49e56c49 793
04925e1e 794 if (ld_so_conf == NULL)
b34976b6 795 return FALSE;
252b5132 796
e56f61be
L
797
798 needed.by = NULL;
799 needed.name = name;
800 return gld${EMULATION_NAME}_search_needed (ld_so_conf, &needed, force);
252b5132
RH
801}
802
04925e1e 803EOF
9c8ebd6a
DJ
804 # Linux
805 ;;
04925e1e
AM
806 esac
807fi
808cat >>e${EMULATION_NAME}.c <<EOF
809
252b5132
RH
810/* See if an input file matches a DT_NEEDED entry by name. */
811
812static void
0c7a8e5a 813gld${EMULATION_NAME}_check_needed (lang_input_statement_type *s)
252b5132 814{
e13629bc
AM
815 const char *soname;
816
817 /* Stop looking if we've found a loaded lib. */
818 if (global_found != NULL
819 && (bfd_elf_get_dyn_lib_class (global_found->the_bfd)
820 & DYN_AS_NEEDED) == 0)
252b5132
RH
821 return;
822
e13629bc
AM
823 if (s->filename == NULL || s->the_bfd == NULL)
824 return;
825
826 /* Don't look for a second non-loaded as-needed lib. */
827 if (global_found != NULL
828 && (bfd_elf_get_dyn_lib_class (s->the_bfd) & DYN_AS_NEEDED) != 0)
7cedef86
AM
829 return;
830
e13629bc 831 if (strcmp (s->filename, global_needed->name) == 0)
252b5132 832 {
e13629bc
AM
833 global_found = s;
834 return;
835 }
577a0623 836
e13629bc
AM
837 if (s->search_dirs_flag)
838 {
839 const char *f = strrchr (s->filename, '/');
840 if (f != NULL
841 && strcmp (f + 1, global_needed->name) == 0)
577a0623 842 {
e13629bc 843 global_found = s;
577a0623
AM
844 return;
845 }
252b5132
RH
846 }
847
e13629bc
AM
848 soname = bfd_elf_get_dt_soname (s->the_bfd);
849 if (soname != NULL
850 && strcmp (soname, global_needed->name) == 0)
252b5132 851 {
e13629bc
AM
852 global_found = s;
853 return;
252b5132 854 }
252b5132
RH
855}
856
41392f03
AM
857EOF
858
859if test x"$LDEMUL_AFTER_OPEN" != xgld"$EMULATION_NAME"_after_open; then
860cat >>e${EMULATION_NAME}.c <<EOF
04925e1e
AM
861
862/* This is called after all the input files have been opened. */
252b5132
RH
863
864static void
0c7a8e5a 865gld${EMULATION_NAME}_after_open (void)
252b5132 866{
04925e1e 867 struct bfd_link_needed_list *needed, *l;
252b5132 868
c0065db7
RM
869 if (link_info.emit_note_gnu_build_id)
870 {
871 bfd *abfd;
872 asection *s;
873 bfd_size_type size;
874
875 abfd = link_info.input_bfds;
876
877 size = _bfd_id_note_section_size (abfd, &link_info);
878 if (size == 0)
879 {
880 einfo ("%P: warning: unrecognized --build-id style ignored.\n");
881 free (link_info.emit_note_gnu_build_id);
882 link_info.emit_note_gnu_build_id = NULL;
883 }
884 else
885 {
886 s = bfd_make_section_with_flags (abfd, ".note.gnu.build-id",
887 SEC_ALLOC | SEC_LOAD
888 | SEC_IN_MEMORY | SEC_LINKER_CREATED
889 | SEC_READONLY | SEC_DATA);
890 if (s != NULL && bfd_set_section_alignment (abfd, s, 2))
891 {
892 struct elf_obj_tdata *t = elf_tdata (output_bfd);
893 t->emit_note_gnu_build_id = link_info.emit_note_gnu_build_id;
894 t->note_gnu_build_id_sec = s;
895 elf_section_type (s) = SHT_NOTE;
896 s->size = size;
897 }
898 else
899 {
900 einfo ("%P: warning: Cannot create .note.gnu.build-id section,"
901 " --build-id ignored.\n");
902 free (link_info.emit_note_gnu_build_id);
903 link_info.emit_note_gnu_build_id = NULL;
904 }
905 }
906 }
907
eb3d5f3b
JB
908 if (link_info.eh_frame_hdr
909 && ! link_info.traditional_format
910 && ! link_info.relocatable)
911 {
912 struct elf_link_hash_table *htab;
913
914 htab = elf_hash_table (&link_info);
915 if (is_elf_hash_table (htab))
916 {
917 bfd *abfd;
918 asection *s;
919
920 for (abfd = link_info.input_bfds; abfd; abfd = abfd->link_next)
921 {
922 s = bfd_get_section_by_name (abfd, ".eh_frame");
923 if (s && s->size > 8 && !bfd_is_abs_section (s->output_section))
924 break;
925 }
926 if (abfd)
927 {
928 const struct elf_backend_data *bed;
929
930 bed = get_elf_backend_data (abfd);
931 s = bfd_make_section_with_flags (abfd, ".eh_frame_hdr",
932 bed->dynamic_sec_flags
933 | SEC_READONLY);
934 if (s != NULL
935 && bfd_set_section_alignment (abfd, s, 2))
936 htab->eh_info.hdr_sec = s;
937 else
938 einfo ("%P: warning: Cannot create .eh_frame_hdr section,"
939 " --eh-frame-hdr ignored.\n");
940 }
941 }
942 }
943
04925e1e 944 /* We only need to worry about this when doing a final link. */
1049f94e 945 if (link_info.relocatable || !link_info.executable)
252b5132
RH
946 return;
947
04925e1e
AM
948 /* Get the list of files which appear in DT_NEEDED entries in
949 dynamic objects included in the link (often there will be none).
950 For each such file, we want to track down the corresponding
951 library, and include the symbol table in the link. This is what
952 the runtime dynamic linker will do. Tracking the files down here
953 permits one dynamic object to include another without requiring
954 special action by the person doing the link. Note that the
955 needed list can actually grow while we are stepping through this
956 loop. */
957 needed = bfd_elf_get_needed_list (output_bfd, &link_info);
958 for (l = needed; l != NULL; l = l->next)
252b5132 959 {
04925e1e 960 struct bfd_link_needed_list *ll;
e56f61be 961 struct dt_needed n, nn;
04925e1e 962 int force;
252b5132 963
7e9f0867
AM
964 /* If the lib that needs this one was --as-needed and wasn't
965 found to be needed, then this lib isn't needed either. */
966 if (l->by != NULL
967 && (bfd_elf_get_dyn_lib_class (l->by) & DYN_AS_NEEDED) != 0)
968 continue;
969
04925e1e
AM
970 /* If we've already seen this file, skip it. */
971 for (ll = needed; ll != l; ll = ll->next)
7e9f0867
AM
972 if ((ll->by == NULL
973 || (bfd_elf_get_dyn_lib_class (ll->by) & DYN_AS_NEEDED) == 0)
974 && strcmp (ll->name, l->name) == 0)
04925e1e
AM
975 break;
976 if (ll != l)
977 continue;
252b5132 978
04925e1e
AM
979 /* See if this file was included in the link explicitly. */
980 global_needed = l;
e13629bc 981 global_found = NULL;
04925e1e 982 lang_for_each_input_file (gld${EMULATION_NAME}_check_needed);
e13629bc
AM
983 if (global_found != NULL
984 && (bfd_elf_get_dyn_lib_class (global_found->the_bfd)
985 & DYN_AS_NEEDED) == 0)
04925e1e 986 continue;
252b5132 987
e56f61be
L
988 n.by = l->by;
989 n.name = l->name;
990 nn.by = l->by;
ec4eb78a
L
991 if (trace_file_tries)
992 info_msg (_("%s needed by %B\n"), l->name, l->by);
993
e13629bc
AM
994 /* As-needed libs specified on the command line (or linker script)
995 take priority over libs found in search dirs. */
996 if (global_found != NULL)
997 {
998 nn.name = global_found->filename;
999 if (gld${EMULATION_NAME}_try_needed (&nn, TRUE))
1000 continue;
1001 }
1002
04925e1e
AM
1003 /* We need to find this file and include the symbol table. We
1004 want to search for the file in the same way that the dynamic
1005 linker will search. That means that we want to use
1006 rpath_link, rpath, then the environment variable
ec4eb78a
L
1007 LD_LIBRARY_PATH (native only), then the DT_RPATH/DT_RUNPATH
1008 entries (native only), then the linker script LIB_SEARCH_DIRS.
1009 We do not search using the -L arguments.
252b5132 1010
04925e1e
AM
1011 We search twice. The first time, we skip objects which may
1012 introduce version mismatches. The second time, we force
1013 their use. See gld${EMULATION_NAME}_vercheck comment. */
1014 for (force = 0; force < 2; force++)
1015 {
04925e1e
AM
1016 size_t len;
1017 search_dirs_type *search;
6dd8c765 1018EOF
ff925e69 1019if [ "x${NATIVE}" = xyes ] ; then
6dd8c765 1020cat >>e${EMULATION_NAME}.c <<EOF
dcb0bd0e 1021 const char *lib_path;
ff925e69
KK
1022EOF
1023fi
1024if [ "x${USE_LIBPATH}" = xyes ] ; then
1025cat >>e${EMULATION_NAME}.c <<EOF
6dd8c765
L
1026 struct bfd_link_needed_list *rp;
1027 int found;
1028EOF
6dd8c765
L
1029fi
1030cat >>e${EMULATION_NAME}.c <<EOF
252b5132 1031
04925e1e 1032 if (gld${EMULATION_NAME}_search_needed (command_line.rpath_link,
e56f61be 1033 &n, force))
04925e1e 1034 break;
dcb0bd0e 1035EOF
9c8ebd6a 1036if [ "x${USE_LIBPATH}" = xyes ] ; then
dcb0bd0e 1037cat >>e${EMULATION_NAME}.c <<EOF
04925e1e 1038 if (gld${EMULATION_NAME}_search_needed (command_line.rpath,
e56f61be 1039 &n, force))
04925e1e 1040 break;
9c8ebd6a
DJ
1041EOF
1042fi
1043if [ "x${NATIVE}" = xyes ] ; then
1044cat >>e${EMULATION_NAME}.c <<EOF
04925e1e
AM
1045 if (command_line.rpath_link == NULL
1046 && command_line.rpath == NULL)
1047 {
1048 lib_path = (const char *) getenv ("LD_RUN_PATH");
e56f61be 1049 if (gld${EMULATION_NAME}_search_needed (lib_path, &n,
04925e1e
AM
1050 force))
1051 break;
1052 }
04925e1e 1053 lib_path = (const char *) getenv ("LD_LIBRARY_PATH");
e56f61be 1054 if (gld${EMULATION_NAME}_search_needed (lib_path, &n, force))
04925e1e 1055 break;
9c8ebd6a
DJ
1056EOF
1057fi
1058if [ "x${USE_LIBPATH}" = xyes ] ; then
1059cat >>e${EMULATION_NAME}.c <<EOF
ec4eb78a 1060 found = 0;
6dd8c765
L
1061 rp = bfd_elf_get_runpath_list (output_bfd, &link_info);
1062 for (; !found && rp != NULL; rp = rp->next)
ec4eb78a 1063 {
9c8ebd6a 1064 char *tmpname = gld${EMULATION_NAME}_add_sysroot (rp->name);
ec4eb78a 1065 found = (rp->by == l->by
9c8ebd6a 1066 && gld${EMULATION_NAME}_search_needed (tmpname,
e56f61be 1067 &n,
ec4eb78a 1068 force));
9c8ebd6a 1069 free (tmpname);
ec4eb78a
L
1070 }
1071 if (found)
1072 break;
1073
04925e1e 1074EOF
04925e1e 1075fi
c1446dba
L
1076if [ "x${USE_LIBPATH}" = xyes ] ; then
1077 case ${target} in
ebe1fac1
NC
1078 *-*-freebsd* | *-*-dragonfly*)
1079 cat >>e${EMULATION_NAME}.c <<EOF
1080 if (gld${EMULATION_NAME}_check_ld_elf_hints (l->name, force))
1081 break;
1082EOF
1083 # FreeBSD
1084 ;;
1085
c1446dba
L
1086 *-*-linux-* | *-*-k*bsd*-*)
1087 # Linux
1088 cat >>e${EMULATION_NAME}.c <<EOF
1089 if (gld${EMULATION_NAME}_check_ld_so_conf (l->name, force))
1090 break;
1091
1092EOF
1093 ;;
1094 esac
1095fi
04925e1e
AM
1096cat >>e${EMULATION_NAME}.c <<EOF
1097 len = strlen (l->name);
1098 for (search = search_head; search != NULL; search = search->next)
1099 {
1100 char *filename;
252b5132 1101
04925e1e
AM
1102 if (search->cmdline)
1103 continue;
1104 filename = (char *) xmalloc (strlen (search->name) + len + 2);
1105 sprintf (filename, "%s/%s", search->name, l->name);
e56f61be
L
1106 nn.name = filename;
1107 if (gld${EMULATION_NAME}_try_needed (&nn, force))
04925e1e
AM
1108 break;
1109 free (filename);
1110 }
1111 if (search != NULL)
1112 break;
1113EOF
04925e1e
AM
1114cat >>e${EMULATION_NAME}.c <<EOF
1115 }
252b5132 1116
04925e1e
AM
1117 if (force < 2)
1118 continue;
252b5132 1119
e374f1d9 1120 einfo ("%P: warning: %s, needed by %B, not found (try using -rpath or -rpath-link)\n",
04925e1e
AM
1121 l->name, l->by);
1122 }
1123}
252b5132 1124
41392f03
AM
1125EOF
1126fi
1127
1128cat >>e${EMULATION_NAME}.c <<EOF
252b5132 1129
04925e1e 1130/* Look through an expression for an assignment statement. */
252b5132 1131
04925e1e 1132static void
0c7a8e5a 1133gld${EMULATION_NAME}_find_exp_assignment (etree_type *exp)
04925e1e 1134{
4ea42fb7 1135 bfd_boolean provide = FALSE;
04925e1e
AM
1136
1137 switch (exp->type.node_class)
252b5132 1138 {
04925e1e 1139 case etree_provide:
4ea42fb7
AM
1140 provide = TRUE;
1141 /* Fall thru */
1142 case etree_assign:
04925e1e
AM
1143 /* We call record_link_assignment even if the symbol is defined.
1144 This is because if it is defined by a dynamic object, we
1145 actually want to use the value defined by the linker script,
1146 not the value from the dynamic object (because we are setting
1147 symbols like etext). If the symbol is defined by a regular
1148 object, then, as it happens, calling record_link_assignment
1149 will do no harm. */
04925e1e 1150 if (strcmp (exp->assign.dst, ".") != 0)
252b5132 1151 {
fe21a8fc
L
1152 if (!bfd_elf_record_link_assignment (output_bfd, &link_info,
1153 exp->assign.dst, provide,
1154 exp->assign.hidden))
04925e1e
AM
1155 einfo ("%P%F: failed to record assignment to %s: %E\n",
1156 exp->assign.dst);
252b5132 1157 }
04925e1e
AM
1158 gld${EMULATION_NAME}_find_exp_assignment (exp->assign.src);
1159 break;
252b5132 1160
04925e1e
AM
1161 case etree_binary:
1162 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.lhs);
1163 gld${EMULATION_NAME}_find_exp_assignment (exp->binary.rhs);
1164 break;
252b5132 1165
04925e1e
AM
1166 case etree_trinary:
1167 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.cond);
1168 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.lhs);
1169 gld${EMULATION_NAME}_find_exp_assignment (exp->trinary.rhs);
1170 break;
252b5132 1171
04925e1e
AM
1172 case etree_unary:
1173 gld${EMULATION_NAME}_find_exp_assignment (exp->unary.child);
1174 break;
252b5132 1175
04925e1e
AM
1176 default:
1177 break;
252b5132
RH
1178 }
1179}
1180
04925e1e
AM
1181
1182/* This is called by the before_allocation routine via
1183 lang_for_each_statement. It locates any assignment statements, and
1184 tells the ELF backend about them, in case they are assignments to
1185 symbols which are referred to by dynamic objects. */
1186
1187static void
0c7a8e5a 1188gld${EMULATION_NAME}_find_statement_assignment (lang_statement_union_type *s)
04925e1e
AM
1189{
1190 if (s->header.type == lang_assignment_statement_enum)
1191 gld${EMULATION_NAME}_find_exp_assignment (s->assignment_statement.exp);
1192}
1193
41392f03
AM
1194EOF
1195
1196if test x"$LDEMUL_BEFORE_ALLOCATION" != xgld"$EMULATION_NAME"_before_allocation; then
57e6abd2
AO
1197 if test x"${ELF_INTERPRETER_NAME+set}" = xset; then
1198 ELF_INTERPRETER_SET_DEFAULT="
1199 if (sinterp != NULL)
1200 {
5718918d
AM
1201 sinterp->contents = (unsigned char *) ${ELF_INTERPRETER_NAME};
1202 sinterp->size = strlen ((char *) sinterp->contents) + 1;
57e6abd2
AO
1203 }
1204
1205"
1206 else
1207 ELF_INTERPRETER_SET_DEFAULT=
1208 fi
41392f03 1209cat >>e${EMULATION_NAME}.c <<EOF
04925e1e 1210
252b5132
RH
1211/* This is called after the sections have been attached to output
1212 sections, but before any sizes or addresses have been set. */
1213
1214static void
0c7a8e5a 1215gld${EMULATION_NAME}_before_allocation (void)
252b5132
RH
1216{
1217 const char *rpath;
1218 asection *sinterp;
1219
fd574c46 1220 if (link_info.hash->type == bfd_link_elf_hash_table)
e1918d23
AM
1221 _bfd_elf_tls_setup (output_bfd, &link_info);
1222
252b5132
RH
1223 /* If we are going to make any variable assignments, we need to let
1224 the ELF backend know about them in case the variables are
1225 referred to by dynamic objects. */
1226 lang_for_each_statement (gld${EMULATION_NAME}_find_statement_assignment);
1227
1228 /* Let the ELF backend work out the sizes of any sections required
1229 by dynamic linking. */
1230 rpath = command_line.rpath;
1231 if (rpath == NULL)
1232 rpath = (const char *) getenv ("LD_RUN_PATH");
5a580b3a 1233 if (! (bfd_elf_size_dynamic_sections
0c7a8e5a 1234 (output_bfd, command_line.soname, rpath,
605d9b3a 1235 command_line.filter_shlib,
252b5132
RH
1236 (const char * const *) command_line.auxiliary_filters,
1237 &link_info, &sinterp, lang_elf_version_info)))
1238 einfo ("%P%F: failed to set dynamic section sizes: %E\n");
8423293d 1239
57e6abd2 1240${ELF_INTERPRETER_SET_DEFAULT}
252b5132
RH
1241 /* Let the user override the dynamic linker we are using. */
1242 if (command_line.interpreter != NULL
1243 && sinterp != NULL)
1244 {
1245 sinterp->contents = (bfd_byte *) command_line.interpreter;
eea6121a 1246 sinterp->size = strlen (command_line.interpreter) + 1;
252b5132
RH
1247 }
1248
1249 /* Look for any sections named .gnu.warning. As a GNU extensions,
1250 we treat such sections as containing warning messages. We print
1251 out the warning message, and then zero out the section size so
1252 that it does not get copied into the output file. */
1253
1254 {
1255 LANG_FOR_EACH_INPUT_STATEMENT (is)
1256 {
1257 asection *s;
1258 bfd_size_type sz;
1259 char *msg;
b34976b6 1260 bfd_boolean ret;
252b5132
RH
1261
1262 if (is->just_syms_flag)
1263 continue;
1264
1265 s = bfd_get_section_by_name (is->the_bfd, ".gnu.warning");
1266 if (s == NULL)
1267 continue;
1268
eea6121a 1269 sz = s->size;
bc251d50
VP
1270 msg = xmalloc ((size_t) (sz + 1));
1271 if (! bfd_get_section_contents (is->the_bfd, s, msg,
8c675694 1272 (file_ptr) 0, sz))
252b5132
RH
1273 einfo ("%F%B: Can't read contents of section .gnu.warning: %E\n",
1274 is->the_bfd);
bc251d50 1275 msg[sz] = '\0';
252b5132
RH
1276 ret = link_info.callbacks->warning (&link_info, msg,
1277 (const char *) NULL,
1278 is->the_bfd, (asection *) NULL,
1279 (bfd_vma) 0);
1280 ASSERT (ret);
1281 free (msg);
1282
9e3be61d
AM
1283 /* Clobber the section size, so that we don't waste space
1284 copying the warning into the output file. If we've already
1285 sized the output section, adjust its size. The adjustment
1286 is on rawsize because targets that size sections early will
1287 have called lang_reset_memory_regions after sizing. */
1288 if (s->output_section != NULL
1289 && s->output_section->rawsize >= s->size)
1290 s->output_section->rawsize -= s->size;
1291
eea6121a 1292 s->size = 0;
11d2f718 1293
9e3be61d
AM
1294 /* Also set SEC_EXCLUDE, so that local symbols defined in the
1295 warning section don't get copied to the output. */
a14a5de3 1296 s->flags |= SEC_EXCLUDE | SEC_KEEP;
252b5132
RH
1297 }
1298 }
8423293d 1299
1e035701 1300 before_allocation_default ();
8423293d
AM
1301
1302 if (!bfd_elf_size_dynsym_hash_dynstr (output_bfd, &link_info))
1303 einfo ("%P%F: failed to set dynamic section sizes: %E\n");
252b5132
RH
1304}
1305
41392f03
AM
1306EOF
1307fi
1308
1309if test x"$LDEMUL_OPEN_DYNAMIC_ARCHIVE" != xgld"$EMULATION_NAME"_open_dynamic_archive; then
1310cat >>e${EMULATION_NAME}.c <<EOF
252b5132 1311
04925e1e
AM
1312/* Try to open a dynamic archive. This is where we know that ELF
1313 dynamic libraries have an extension of .so (or .sl on oddball systems
1314 like hpux). */
1315
b34976b6 1316static bfd_boolean
0c7a8e5a
AM
1317gld${EMULATION_NAME}_open_dynamic_archive
1318 (const char *arch, search_dirs_type *search, lang_input_statement_type *entry)
252b5132 1319{
04925e1e
AM
1320 const char *filename;
1321 char *string;
252b5132 1322
04925e1e 1323 if (! entry->is_archive)
b34976b6 1324 return FALSE;
252b5132 1325
04925e1e 1326 filename = entry->filename;
252b5132 1327
04925e1e
AM
1328 /* This allocates a few bytes too many when EXTRA_SHLIB_EXTENSION
1329 is defined, but it does not seem worth the headache to optimize
1330 away those two bytes of space. */
1331 string = (char *) xmalloc (strlen (search->name)
1332 + strlen (filename)
1333 + strlen (arch)
1334#ifdef EXTRA_SHLIB_EXTENSION
1335 + strlen (EXTRA_SHLIB_EXTENSION)
1336#endif
1337 + sizeof "/lib.so");
1338
1339 sprintf (string, "%s/lib%s%s.so", search->name, filename, arch);
1340
1341#ifdef EXTRA_SHLIB_EXTENSION
1342 /* Try the .so extension first. If that fails build a new filename
1343 using EXTRA_SHLIB_EXTENSION. */
1344 if (! ldfile_try_open_bfd (string, entry))
1345 sprintf (string, "%s/lib%s%s%s", search->name,
1346 filename, arch, EXTRA_SHLIB_EXTENSION);
1347#endif
1348
1349 if (! ldfile_try_open_bfd (string, entry))
252b5132 1350 {
04925e1e 1351 free (string);
b34976b6 1352 return FALSE;
04925e1e 1353 }
252b5132 1354
04925e1e 1355 entry->filename = string;
252b5132 1356
04925e1e
AM
1357 /* We have found a dynamic object to include in the link. The ELF
1358 backend linker will create a DT_NEEDED entry in the .dynamic
1359 section naming this file. If this file includes a DT_SONAME
1360 entry, it will be used. Otherwise, the ELF linker will just use
1361 the name of the file. For an archive found by searching, like
1362 this one, the DT_NEEDED entry should consist of just the name of
1363 the file, without the path information used to find it. Note
1364 that we only need to do this if we have a dynamic object; an
1365 archive will never be referenced by a DT_NEEDED entry.
252b5132 1366
04925e1e
AM
1367 FIXME: This approach--using bfd_elf_set_dt_needed_name--is not
1368 very pretty. I haven't been able to think of anything that is
1369 pretty, though. */
1370 if (bfd_check_format (entry->the_bfd, bfd_object)
1371 && (entry->the_bfd->flags & DYNAMIC) != 0)
1372 {
04925e1e 1373 ASSERT (entry->is_archive && entry->search_dirs_flag);
252b5132 1374
04925e1e 1375 /* Rather than duplicating the logic above. Just use the
1c9acd94 1376 filename we recorded earlier. */
04925e1e 1377
fed2999d 1378 filename = lbasename (entry->filename);
1c9acd94 1379 bfd_elf_set_dt_needed_name (entry->the_bfd, filename);
04925e1e
AM
1380 }
1381
b34976b6 1382 return TRUE;
04925e1e
AM
1383}
1384
41392f03
AM
1385EOF
1386fi
cde43e70
AM
1387
1388if test x"$LDEMUL_PLACE_ORPHAN" != xgld"$EMULATION_NAME"_place_orphan; then
41392f03
AM
1389cat >>e${EMULATION_NAME}.c <<EOF
1390
afd7a018 1391/* A variant of lang_output_section_find used by place_orphan. */
04925e1e 1392
04925e1e 1393static lang_output_section_statement_type *
2a36a117 1394output_rel_find (asection *sec, int isdyn)
04925e1e 1395{
04925e1e 1396 lang_output_section_statement_type *lookup;
ba493122 1397 lang_output_section_statement_type *last = NULL;
2a36a117 1398 lang_output_section_statement_type *last_alloc = NULL;
ba493122
AM
1399 lang_output_section_statement_type *last_rel = NULL;
1400 lang_output_section_statement_type *last_rel_alloc = NULL;
24cdb50a 1401 int rela = sec->name[4] == 'a';
04925e1e 1402
afd7a018
AM
1403 for (lookup = &lang_output_section_statement.head->output_section_statement;
1404 lookup != NULL;
1405 lookup = lookup->next)
04925e1e 1406 {
0841712e 1407 if (lookup->constraint != -1
0112cd26 1408 && CONST_STRNEQ (lookup->name, ".rel"))
04925e1e 1409 {
24cdb50a 1410 int lookrela = lookup->name[4] == 'a';
ba493122 1411
2a36a117
AM
1412 /* .rel.dyn must come before all other reloc sections, to suit
1413 GNU ld.so. */
1414 if (isdyn)
1415 break;
1416
1417 /* Don't place after .rel.plt as doing so results in wrong
1418 dynamic tags. */
1419 if (strcmp (".plt", lookup->name + 4 + lookrela) == 0)
ba493122 1420 break;
2a36a117
AM
1421
1422 if (rela == lookrela || last_rel == NULL)
24cdb50a 1423 last_rel = lookup;
2a36a117
AM
1424 if ((rela == lookrela || last_rel_alloc == NULL)
1425 && lookup->bfd_section != NULL
ba493122
AM
1426 && (lookup->bfd_section->flags & SEC_ALLOC) != 0)
1427 last_rel_alloc = lookup;
04925e1e 1428 }
2a36a117
AM
1429
1430 last = lookup;
1431 if (lookup->bfd_section != NULL
1432 && (lookup->bfd_section->flags & SEC_ALLOC) != 0)
1433 last_alloc = lookup;
252b5132 1434 }
ba493122
AM
1435
1436 if (last_rel_alloc)
1437 return last_rel_alloc;
1438
1439 if (last_rel)
1440 return last_rel;
1441
2a36a117
AM
1442 if (last_alloc)
1443 return last_alloc;
1444
ba493122 1445 return last;
252b5132
RH
1446}
1447
1448/* Place an orphan section. We use this to put random SHF_ALLOC
1449 sections in the right segment. */
1450
b34976b6 1451static bfd_boolean
7b986e99 1452gld${EMULATION_NAME}_place_orphan (asection *s)
252b5132 1453{
afd7a018
AM
1454 static struct orphan_save hold[] =
1455 {
1456 { ".text",
1457 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE,
1458 0, 0, 0, 0 },
1459 { ".rodata",
1460 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1461 0, 0, 0, 0 },
1462 { ".data",
1463 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
1464 0, 0, 0, 0 },
1465 { ".bss",
1466 SEC_ALLOC,
1467 0, 0, 0, 0 },
1468 { 0,
1469 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1470 0, 0, 0, 0 },
1471 { ".interp",
1472 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_DATA,
1473 0, 0, 0, 0 },
1474 { ".sdata",
1475 SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_SMALL_DATA,
1476 0, 0, 0, 0 }
1477 };
1478 enum orphan_save_index
1479 {
1480 orphan_text = 0,
1481 orphan_rodata,
1482 orphan_data,
1483 orphan_bss,
1484 orphan_rel,
1485 orphan_interp,
1486 orphan_sdata
1487 };
1488 static int orphan_init_done = 0;
6a345e87 1489 struct orphan_save *place;
a854a4a7 1490 const char *secname;
afd7a018 1491 lang_output_section_statement_type *after;
252b5132 1492 lang_output_section_statement_type *os;
24cdb50a 1493 int isdyn = 0;
ecca9871
L
1494 int iself = s->owner->xvec->flavour == bfd_target_elf_flavour;
1495 unsigned int sh_type = iself ? elf_section_type (s) : SHT_NULL;
252b5132 1496
aea4bd9d 1497 secname = bfd_get_section_name (s->owner, s);
9f61903d 1498
1049f94e 1499 if (! link_info.relocatable
24cdb50a 1500 && link_info.combreloc
ecca9871 1501 && (s->flags & SEC_ALLOC))
24cdb50a 1502 {
ecca9871
L
1503 if (iself)
1504 switch (sh_type)
1505 {
1506 case SHT_RELA:
1507 secname = ".rela.dyn";
1508 isdyn = 1;
1509 break;
1510 case SHT_REL:
1511 secname = ".rel.dyn";
1512 isdyn = 1;
1513 break;
1514 default:
1515 break;
1516 }
0112cd26 1517 else if (CONST_STRNEQ (secname, ".rel"))
ecca9871
L
1518 {
1519 secname = secname[4] == 'a' ? ".rela.dyn" : ".rel.dyn";
1520 isdyn = 1;
1521 }
24cdb50a 1522 }
aea4bd9d 1523
d0d6a25b 1524 if (isdyn || (!config.unique_orphan_sections && !unique_section_p (s)))
252b5132 1525 {
6d02a667 1526 /* Look through the script to see where to place this section. */
a854a4a7
AM
1527 os = lang_output_section_find (secname);
1528
1529 if (os != NULL
0f33d40b 1530 && (os->bfd_section == NULL
afd7a018 1531 || os->bfd_section->flags == 0
390fbbf1
AM
1532 || (_bfd_elf_match_sections_by_type (output_bfd,
1533 os->bfd_section,
1534 s->owner, s)
ecca9871
L
1535 && ((s->flags ^ os->bfd_section->flags)
1536 & (SEC_LOAD | SEC_ALLOC)) == 0)))
a854a4a7 1537 {
0f33d40b 1538 /* We already have an output section statement with this
afd7a018
AM
1539 name, and its bfd section, if any, has compatible flags.
1540 If the section already exists but does not have any flags
1541 set, then it has been created by the linker, probably as a
1542 result of a --section-start command line switch. */
7b986e99 1543 lang_add_section (&os->children, s, os);
b34976b6 1544 return TRUE;
a854a4a7 1545 }
252b5132
RH
1546 }
1547
afd7a018
AM
1548 if (!orphan_init_done)
1549 {
1550 struct orphan_save *ho;
1551 for (ho = hold; ho < hold + sizeof (hold) / sizeof (hold[0]); ++ho)
1552 if (ho->name != NULL)
1553 {
1554 ho->os = lang_output_section_find (ho->name);
1555 if (ho->os != NULL && ho->os->flags == 0)
1556 ho->os->flags = ho->flags;
1557 }
1558 orphan_init_done = 1;
1559 }
252b5132
RH
1560
1561 /* If this is a final link, then always put .gnu.warning.SYMBOL
1562 sections into the .text section to get them out of the way. */
36af4a4e 1563 if (link_info.executable
1049f94e 1564 && ! link_info.relocatable
0112cd26 1565 && CONST_STRNEQ (secname, ".gnu.warning.")
afd7a018 1566 && hold[orphan_text].os != NULL)
252b5132 1567 {
afd7a018 1568 lang_add_section (&hold[orphan_text].os->children, s,
7b986e99 1569 hold[orphan_text].os);
b34976b6 1570 return TRUE;
252b5132
RH
1571 }
1572
1573 /* Decide which segment the section should go in based on the
1574 section name and section flags. We put loadable .note sections
1575 right after the .interp section, so that the PT_NOTE segment is
1576 stored right after the program headers where the OS can read it
1577 in the first page. */
aea4bd9d 1578
71bfc0ae
AM
1579 place = NULL;
1580 if ((s->flags & SEC_ALLOC) == 0)
1581 ;
252b5132 1582 else if ((s->flags & SEC_LOAD) != 0
ecca9871 1583 && ((iself && sh_type == SHT_NOTE)
0112cd26 1584 || (!iself && CONST_STRNEQ (secname, ".note"))))
afd7a018
AM
1585 place = &hold[orphan_interp];
1586 else if ((s->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
1587 place = &hold[orphan_bss];
1588 else if ((s->flags & SEC_SMALL_DATA) != 0)
1589 place = &hold[orphan_sdata];
1590 else if ((s->flags & SEC_READONLY) == 0)
1591 place = &hold[orphan_data];
ecca9871 1592 else if (((iself && (sh_type == SHT_RELA || sh_type == SHT_REL))
0112cd26 1593 || (!iself && CONST_STRNEQ (secname, ".rel")))
afd7a018
AM
1594 && (s->flags & SEC_LOAD) != 0)
1595 place = &hold[orphan_rel];
1596 else if ((s->flags & SEC_CODE) == 0)
1597 place = &hold[orphan_rodata];
1598 else
1599 place = &hold[orphan_text];
71bfc0ae 1600
afd7a018 1601 after = NULL;
5ba47421 1602 if (place != NULL)
252b5132 1603 {
afd7a018 1604 if (place->os == NULL)
5ba47421 1605 {
afd7a018
AM
1606 if (place->name != NULL)
1607 place->os = lang_output_section_find (place->name);
1608 else
1609 place->os = output_rel_find (s, isdyn);
5ba47421 1610 }
afd7a018
AM
1611 after = place->os;
1612 if (after == NULL)
390fbbf1
AM
1613 after = lang_output_section_find_by_flags
1614 (s, &place->os, _bfd_elf_match_sections_by_type);
afd7a018
AM
1615 if (after == NULL)
1616 /* *ABS* is always the first output section statement. */
1617 after = &lang_output_section_statement.head->output_section_statement;
252b5132
RH
1618 }
1619
afd7a018
AM
1620 /* Choose a unique name for the section. This will be needed if the
1621 same section name appears in the input file with different
1622 loadable or allocatable characteristics. */
1623 if (bfd_get_section_by_name (output_bfd, secname) != NULL)
252b5132 1624 {
afd7a018
AM
1625 static int count = 1;
1626 secname = bfd_get_unique_section_name (output_bfd, secname, &count);
1627 if (secname == NULL)
1628 einfo ("%F%P: place_orphan failed: %E\n");
71bfc0ae 1629 }
5ba47421 1630
7b986e99 1631 lang_insert_orphan (s, secname, after, place, NULL, NULL);
252b5132 1632
b34976b6 1633 return TRUE;
252b5132 1634}
c56feb2b
AM
1635EOF
1636fi
1637
1638if test x"$LDEMUL_FINISH" != xgld"$EMULATION_NAME"_finish; then
1639cat >>e${EMULATION_NAME}.c <<EOF
252b5132 1640
deb04cdb
AM
1641static void
1642gld${EMULATION_NAME}_finish (void)
1643{
8ded5a0f 1644 bfd_boolean need_layout = bfd_elf_discard_info (output_bfd, &link_info);
81e1b023 1645
8ded5a0f 1646 gld${EMULATION_NAME}_map_segments (need_layout);
1e035701 1647 finish_default ();
73d074b4 1648}
41392f03
AM
1649EOF
1650fi
1651
1652if test x"$LDEMUL_GET_SCRIPT" != xgld"$EMULATION_NAME"_get_script; then
1653cat >>e${EMULATION_NAME}.c <<EOF
252b5132
RH
1654
1655static char *
0c7a8e5a 1656gld${EMULATION_NAME}_get_script (int *isfile)
252b5132
RH
1657EOF
1658
1659if test -n "$COMPILE_IN"
1660then
1661# Scripts compiled in.
1662
1663# sed commands to quote an ld script as a C string.
597e2591 1664sc="-f stringify.sed"
252b5132
RH
1665
1666cat >>e${EMULATION_NAME}.c <<EOF
60bcf0fa 1667{
252b5132
RH
1668 *isfile = 0;
1669
1049f94e 1670 if (link_info.relocatable && config.build_constructors)
597e2591 1671 return
252b5132 1672EOF
afd7a018
AM
1673sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
1674echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
1675sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
1676echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
1677sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
61585df2 1678if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then : ; else
afd7a018
AM
1679echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
1680sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
db6751f2 1681fi
36af4a4e
JJ
1682if test -n "$GENERATE_PIE_SCRIPT" ; then
1683if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
8c37241b
JJ
1684echo ' ; else if (link_info.pie && link_info.combreloc' >> e${EMULATION_NAME}.c
1685echo ' && link_info.relro' >> e${EMULATION_NAME}.c
1686echo ' && (link_info.flags & DT_BIND_NOW)) return' >> e${EMULATION_NAME}.c
afd7a018 1687sed $sc ldscripts/${EMULATION_NAME}.xdw >> e${EMULATION_NAME}.c
36af4a4e 1688echo ' ; else if (link_info.pie && link_info.combreloc) return' >> e${EMULATION_NAME}.c
afd7a018 1689sed $sc ldscripts/${EMULATION_NAME}.xdc >> e${EMULATION_NAME}.c
36af4a4e 1690fi
afd7a018
AM
1691echo ' ; else if (link_info.pie) return' >> e${EMULATION_NAME}.c
1692sed $sc ldscripts/${EMULATION_NAME}.xd >> e${EMULATION_NAME}.c
36af4a4e 1693fi
252b5132 1694if test -n "$GENERATE_SHLIB_SCRIPT" ; then
82434356 1695if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
8c37241b
JJ
1696echo ' ; else if (link_info.shared && link_info.combreloc' >> e${EMULATION_NAME}.c
1697echo ' && link_info.relro' >> e${EMULATION_NAME}.c
1698echo ' && (link_info.flags & DT_BIND_NOW)) return' >> e${EMULATION_NAME}.c
afd7a018 1699sed $sc ldscripts/${EMULATION_NAME}.xsw >> e${EMULATION_NAME}.c
db6751f2 1700echo ' ; else if (link_info.shared && link_info.combreloc) return' >> e${EMULATION_NAME}.c
afd7a018 1701sed $sc ldscripts/${EMULATION_NAME}.xsc >> e${EMULATION_NAME}.c
82434356 1702fi
afd7a018
AM
1703echo ' ; else if (link_info.shared) return' >> e${EMULATION_NAME}.c
1704sed $sc ldscripts/${EMULATION_NAME}.xs >> e${EMULATION_NAME}.c
252b5132 1705fi
82434356 1706if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
8c37241b
JJ
1707echo ' ; else if (link_info.combreloc && link_info.relro' >> e${EMULATION_NAME}.c
1708echo ' && (link_info.flags & DT_BIND_NOW)) return' >> e${EMULATION_NAME}.c
afd7a018
AM
1709sed $sc ldscripts/${EMULATION_NAME}.xw >> e${EMULATION_NAME}.c
1710echo ' ; else if (link_info.combreloc) return' >> e${EMULATION_NAME}.c
1711sed $sc ldscripts/${EMULATION_NAME}.xc >> e${EMULATION_NAME}.c
82434356 1712fi
afd7a018
AM
1713echo ' ; else return' >> e${EMULATION_NAME}.c
1714sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
1715echo '; }' >> e${EMULATION_NAME}.c
252b5132
RH
1716
1717else
1718# Scripts read from the filesystem.
1719
1720cat >>e${EMULATION_NAME}.c <<EOF
60bcf0fa 1721{
252b5132
RH
1722 *isfile = 1;
1723
1049f94e 1724 if (link_info.relocatable && config.build_constructors)
252b5132 1725 return "ldscripts/${EMULATION_NAME}.xu";
1049f94e 1726 else if (link_info.relocatable)
252b5132
RH
1727 return "ldscripts/${EMULATION_NAME}.xr";
1728 else if (!config.text_read_only)
1729 return "ldscripts/${EMULATION_NAME}.xbn";
a060b769
AM
1730EOF
1731if cmp -s ldscripts/${EMULATION_NAME}.x ldscripts/${EMULATION_NAME}.xn; then :
1732else
1733cat >>e${EMULATION_NAME}.c <<EOF
252b5132
RH
1734 else if (!config.magic_demand_paged)
1735 return "ldscripts/${EMULATION_NAME}.xn";
a060b769
AM
1736EOF
1737fi
36af4a4e
JJ
1738if test -n "$GENERATE_PIE_SCRIPT" ; then
1739if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1740cat >>e${EMULATION_NAME}.c <<EOF
8c37241b
JJ
1741 else if (link_info.pie && link_info.combreloc
1742 && link_info.relro && (link_info.flags & DT_BIND_NOW))
1743 return "ldscripts/${EMULATION_NAME}.xdw";
36af4a4e
JJ
1744 else if (link_info.pie && link_info.combreloc)
1745 return "ldscripts/${EMULATION_NAME}.xdc";
1746EOF
1747fi
1748cat >>e${EMULATION_NAME}.c <<EOF
1749 else if (link_info.pie)
1750 return "ldscripts/${EMULATION_NAME}.xd";
1751EOF
1752fi
a060b769
AM
1753if test -n "$GENERATE_SHLIB_SCRIPT" ; then
1754if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1755cat >>e${EMULATION_NAME}.c <<EOF
8c37241b
JJ
1756 else if (link_info.shared && link_info.combreloc
1757 && link_info.relro && (link_info.flags & DT_BIND_NOW))
1758 return "ldscripts/${EMULATION_NAME}.xsw";
a060b769
AM
1759 else if (link_info.shared && link_info.combreloc)
1760 return "ldscripts/${EMULATION_NAME}.xsc";
1761EOF
1762fi
1763cat >>e${EMULATION_NAME}.c <<EOF
252b5132
RH
1764 else if (link_info.shared)
1765 return "ldscripts/${EMULATION_NAME}.xs";
a060b769
AM
1766EOF
1767fi
1768if test -n "$GENERATE_COMBRELOC_SCRIPT" ; then
1769cat >>e${EMULATION_NAME}.c <<EOF
8c37241b
JJ
1770 else if (link_info.combreloc && link_info.relro
1771 && (link_info.flags & DT_BIND_NOW))
1772 return "ldscripts/${EMULATION_NAME}.xw";
a060b769
AM
1773 else if (link_info.combreloc)
1774 return "ldscripts/${EMULATION_NAME}.xc";
1775EOF
1776fi
1777cat >>e${EMULATION_NAME}.c <<EOF
252b5132
RH
1778 else
1779 return "ldscripts/${EMULATION_NAME}.x";
1780}
252b5132 1781
3b108066 1782EOF
41392f03
AM
1783fi
1784fi
3b108066 1785
41392f03 1786if test -n "$PARSE_AND_LIST_ARGS_CASES" -o x"$GENERATE_SHLIB_SCRIPT" = xyes; then
3b108066 1787
e0ee487b
L
1788if test -n "$PARSE_AND_LIST_PROLOGUE" ; then
1789cat >>e${EMULATION_NAME}.c <<EOF
1790 $PARSE_AND_LIST_PROLOGUE
1791EOF
1792fi
1793
e0ee487b
L
1794cat >>e${EMULATION_NAME}.c <<EOF
1795
6c1439be
L
1796#define OPTION_DISABLE_NEW_DTAGS (400)
1797#define OPTION_ENABLE_NEW_DTAGS (OPTION_DISABLE_NEW_DTAGS + 1)
a1ab1d2a 1798#define OPTION_GROUP (OPTION_ENABLE_NEW_DTAGS + 1)
65765700 1799#define OPTION_EH_FRAME_HDR (OPTION_GROUP + 1)
b58f81ae 1800#define OPTION_EXCLUDE_LIBS (OPTION_EH_FRAME_HDR + 1)
fdc90cb4 1801#define OPTION_HASH_STYLE (OPTION_EXCLUDE_LIBS + 1)
c0065db7 1802#define OPTION_BUILD_ID (OPTION_HASH_STYLE + 1)
e13629bc 1803
3bcf5557 1804static void
0c7a8e5a
AM
1805gld${EMULATION_NAME}_add_options
1806 (int ns, char **shortopts, int nl, struct option **longopts,
1807 int nrl ATTRIBUTE_UNUSED, struct option **really_longopts ATTRIBUTE_UNUSED)
e0ee487b 1808{
3bcf5557
AM
1809 static const char xtra_short[] = "${PARSE_AND_LIST_SHORTOPTS}z:";
1810 static const struct option xtra_long[] = {
c0065db7 1811 {"build-id", optional_argument, NULL, OPTION_BUILD_ID},
e0ee487b 1812EOF
e0ee487b
L
1813
1814if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1815cat >>e${EMULATION_NAME}.c <<EOF
3bcf5557
AM
1816 {"disable-new-dtags", no_argument, NULL, OPTION_DISABLE_NEW_DTAGS},
1817 {"enable-new-dtags", no_argument, NULL, OPTION_ENABLE_NEW_DTAGS},
1818 {"eh-frame-hdr", no_argument, NULL, OPTION_EH_FRAME_HDR},
b58f81ae 1819 {"exclude-libs", required_argument, NULL, OPTION_EXCLUDE_LIBS},
fdc90cb4 1820 {"hash-style", required_argument, NULL, OPTION_HASH_STYLE},
3bcf5557 1821 {"Bgroup", no_argument, NULL, OPTION_GROUP},
e0ee487b
L
1822EOF
1823fi
1824
1825if test -n "$PARSE_AND_LIST_LONGOPTS" ; then
1826cat >>e${EMULATION_NAME}.c <<EOF
3bcf5557 1827 $PARSE_AND_LIST_LONGOPTS
e0ee487b
L
1828EOF
1829fi
1830
e0ee487b 1831cat >>e${EMULATION_NAME}.c <<EOF
3bcf5557
AM
1832 {NULL, no_argument, NULL, 0}
1833 };
1834
1835 *shortopts = (char *) xrealloc (*shortopts, ns + sizeof (xtra_short));
1836 memcpy (*shortopts + ns, &xtra_short, sizeof (xtra_short));
1837 *longopts = (struct option *)
1838 xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
1839 memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
1840}
04925e1e 1841
c0065db7
RM
1842#define DEFAULT_BUILD_ID_STYLE "md5"
1843
3bcf5557 1844static bfd_boolean
0c7a8e5a 1845gld${EMULATION_NAME}_handle_option (int optc)
e0ee487b 1846{
e0ee487b
L
1847 switch (optc)
1848 {
1849 default:
3bcf5557 1850 return FALSE;
6c1439be 1851
c0065db7
RM
1852 case OPTION_BUILD_ID:
1853 if (link_info.emit_note_gnu_build_id != NULL)
1854 {
1855 free (link_info.emit_note_gnu_build_id);
1856 link_info.emit_note_gnu_build_id = NULL;
1857 }
1858 if (optarg == NULL)
1859 optarg = DEFAULT_BUILD_ID_STYLE;
1860 if (strcmp (optarg, "none"))
1861 link_info.emit_note_gnu_build_id = xstrdup (optarg);
1862 break;
1863
e0ee487b 1864EOF
e0ee487b
L
1865
1866if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
1867cat >>e${EMULATION_NAME}.c <<EOF
6c1439be 1868 case OPTION_DISABLE_NEW_DTAGS:
b34976b6 1869 link_info.new_dtags = FALSE;
6c1439be
L
1870 break;
1871
1872 case OPTION_ENABLE_NEW_DTAGS:
b34976b6 1873 link_info.new_dtags = TRUE;
6c1439be
L
1874 break;
1875
65765700 1876 case OPTION_EH_FRAME_HDR:
b34976b6 1877 link_info.eh_frame_hdr = TRUE;
65765700
JJ
1878 break;
1879
a1ab1d2a
UD
1880 case OPTION_GROUP:
1881 link_info.flags_1 |= (bfd_vma) DF_1_GROUP;
1882 /* Groups must be self-contained. */
560e09e9
NC
1883 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
1884 link_info.unresolved_syms_in_shared_libs = RM_GENERATE_ERROR;
a1ab1d2a
UD
1885 break;
1886
b58f81ae
DJ
1887 case OPTION_EXCLUDE_LIBS:
1888 add_excluded_libs (optarg);
1889 break;
1890
fdc90cb4
JJ
1891 case OPTION_HASH_STYLE:
1892 link_info.emit_hash = FALSE;
1893 link_info.emit_gnu_hash = FALSE;
1894 if (strcmp (optarg, "sysv") == 0)
1895 link_info.emit_hash = TRUE;
1896 else if (strcmp (optarg, "gnu") == 0)
1897 link_info.emit_gnu_hash = TRUE;
1898 else if (strcmp (optarg, "both") == 0)
1899 {
1900 link_info.emit_hash = TRUE;
1901 link_info.emit_gnu_hash = TRUE;
1902 }
1903 else
1904 einfo (_("%P%F: invalid hash style \`%s'\n"), optarg);
1905 break;
1906
e0ee487b
L
1907 case 'z':
1908 if (strcmp (optarg, "initfirst") == 0)
1909 link_info.flags_1 |= (bfd_vma) DF_1_INITFIRST;
1910 else if (strcmp (optarg, "interpose") == 0)
1911 link_info.flags_1 |= (bfd_vma) DF_1_INTERPOSE;
1912 else if (strcmp (optarg, "loadfltr") == 0)
1913 link_info.flags_1 |= (bfd_vma) DF_1_LOADFLTR;
1914 else if (strcmp (optarg, "nodefaultlib") == 0)
1915 link_info.flags_1 |= (bfd_vma) DF_1_NODEFLIB;
1916 else if (strcmp (optarg, "nodelete") == 0)
1917 link_info.flags_1 |= (bfd_vma) DF_1_NODELETE;
1918 else if (strcmp (optarg, "nodlopen") == 0)
1919 link_info.flags_1 |= (bfd_vma) DF_1_NOOPEN;
1920 else if (strcmp (optarg, "nodump") == 0)
1921 link_info.flags_1 |= (bfd_vma) DF_1_NODUMP;
1922 else if (strcmp (optarg, "now") == 0)
1923 {
1924 link_info.flags |= (bfd_vma) DF_BIND_NOW;
1925 link_info.flags_1 |= (bfd_vma) DF_1_NOW;
1926 }
5fa222e4
AM
1927 else if (strcmp (optarg, "lazy") == 0)
1928 {
1929 link_info.flags &= ~(bfd_vma) DF_BIND_NOW;
1930 link_info.flags_1 &= ~(bfd_vma) DF_1_NOW;
1931 }
e0ee487b
L
1932 else if (strcmp (optarg, "origin") == 0)
1933 {
1934 link_info.flags |= (bfd_vma) DF_ORIGIN;
1935 link_info.flags_1 |= (bfd_vma) DF_1_ORIGIN;
1936 }
a1ab1d2a 1937 else if (strcmp (optarg, "defs") == 0)
560e09e9 1938 link_info.unresolved_syms_in_objects = RM_GENERATE_ERROR;
aa713662 1939 else if (strcmp (optarg, "muldefs") == 0)
b34976b6 1940 link_info.allow_multiple_definition = TRUE;
db6751f2 1941 else if (strcmp (optarg, "combreloc") == 0)
b34976b6 1942 link_info.combreloc = TRUE;
db6751f2 1943 else if (strcmp (optarg, "nocombreloc") == 0)
b34976b6 1944 link_info.combreloc = FALSE;
8bd621d8 1945 else if (strcmp (optarg, "nocopyreloc") == 0)
0c7a8e5a 1946 link_info.nocopyreloc = TRUE;
9ee5e499
JJ
1947 else if (strcmp (optarg, "execstack") == 0)
1948 {
1949 link_info.execstack = TRUE;
1950 link_info.noexecstack = FALSE;
1951 }
1952 else if (strcmp (optarg, "noexecstack") == 0)
1953 {
1954 link_info.noexecstack = TRUE;
1955 link_info.execstack = FALSE;
1956 }
88b882e9
L
1957EOF
1958
1959 if test -n "$COMMONPAGESIZE"; then
1960cat >>e${EMULATION_NAME}.c <<EOF
8c37241b
JJ
1961 else if (strcmp (optarg, "relro") == 0)
1962 link_info.relro = TRUE;
1963 else if (strcmp (optarg, "norelro") == 0)
1964 link_info.relro = FALSE;
88b882e9
L
1965EOF
1966 fi
1967
1968cat >>e${EMULATION_NAME}.c <<EOF
0112cd26 1969 else if (CONST_STRNEQ (optarg, "max-page-size="))
24718e3b
L
1970 {
1971 char *end;
0112cd26 1972
24718e3b 1973 config.maxpagesize = strtoul (optarg + 14, &end, 0);
b8142865 1974 if (*end || (config.maxpagesize & (config.maxpagesize - 1)) != 0)
24718e3b
L
1975 einfo (_("%P%F: invalid maxium page size \`%s'\n"),
1976 optarg + 14);
b8142865
L
1977 ASSERT (default_target != NULL);
1978 bfd_emul_set_maxpagesize (default_target, config.maxpagesize);
24718e3b 1979 }
0112cd26 1980 else if (CONST_STRNEQ (optarg, "common-page-size="))
24718e3b
L
1981 {
1982 char *end;
1983 config.commonpagesize = strtoul (optarg + 17, &end, 0);
b8142865
L
1984 if (*end
1985 || (config.commonpagesize & (config.commonpagesize - 1)) != 0)
24718e3b
L
1986 einfo (_("%P%F: invalid common page size \`%s'\n"),
1987 optarg + 17);
b8142865
L
1988 ASSERT (default_target != NULL);
1989 bfd_emul_set_commonpagesize (default_target,
1990 config.commonpagesize);
24718e3b 1991 }
e0ee487b 1992 /* What about the other Solaris -z options? FIXME. */
6c1439be 1993 break;
e0ee487b
L
1994EOF
1995fi
1996
1997if test -n "$PARSE_AND_LIST_ARGS_CASES" ; then
1998cat >>e${EMULATION_NAME}.c <<EOF
1999 $PARSE_AND_LIST_ARGS_CASES
2000EOF
2001fi
2002
e0ee487b
L
2003cat >>e${EMULATION_NAME}.c <<EOF
2004 }
2005
3bcf5557 2006 return TRUE;
e0ee487b
L
2007}
2008
41392f03 2009EOF
41392f03 2010
4b209b22 2011if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
41392f03
AM
2012cat >>e${EMULATION_NAME}.c <<EOF
2013
e0ee487b 2014static void
0c7a8e5a 2015gld${EMULATION_NAME}_list_options (FILE * file)
e0ee487b 2016{
c0065db7 2017 fprintf (file, _(" --build-id[=STYLE]\tGenerate build ID note\n"));
e0ee487b 2018EOF
e0ee487b
L
2019
2020if test x"$GENERATE_SHLIB_SCRIPT" = xyes; then
2021cat >>e${EMULATION_NAME}.c <<EOF
a1ab1d2a 2022 fprintf (file, _(" -Bgroup\t\tSelects group name lookup rules for DSO\n"));
6c1439be
L
2023 fprintf (file, _(" --disable-new-dtags\tDisable new dynamic tags\n"));
2024 fprintf (file, _(" --enable-new-dtags\tEnable new dynamic tags\n"));
65765700 2025 fprintf (file, _(" --eh-frame-hdr\tCreate .eh_frame_hdr section\n"));
fdc90cb4 2026 fprintf (file, _(" --hash-style=STYLE\tSet hash style to sysv, gnu or both\n"));
ec38dd05 2027 fprintf (file, _(" -z combreloc\t\tMerge dynamic relocs into one section and sort\n"));
560e09e9 2028 fprintf (file, _(" -z defs\t\tReport unresolved symbols in object files.\n"));
9ee5e499 2029 fprintf (file, _(" -z execstack\t\tMark executable as requiring executable stack\n"));
f813923c
HPN
2030 fprintf (file, _(" -z initfirst\t\tMark DSO to be initialized first at runtime\n"));
2031 fprintf (file, _(" -z interpose\t\tMark object to interpose all DSOs but executable\n"));
5fa222e4 2032 fprintf (file, _(" -z lazy\t\tMark object lazy runtime binding (default)\n"));
e0ee487b 2033 fprintf (file, _(" -z loadfltr\t\tMark object requiring immediate process\n"));
aa713662 2034 fprintf (file, _(" -z muldefs\t\tAllow multiple definitions\n"));
146e7110
AM
2035 fprintf (file, _(" -z nocombreloc\tDon't merge dynamic relocs into one section\n"));
2036 fprintf (file, _(" -z nocopyreloc\tDon't create copy relocs\n"));
e0ee487b
L
2037 fprintf (file, _(" -z nodefaultlib\tMark object not to use default search paths\n"));
2038 fprintf (file, _(" -z nodelete\t\tMark DSO non-deletable at runtime\n"));
f813923c
HPN
2039 fprintf (file, _(" -z nodlopen\t\tMark DSO not available to dlopen\n"));
2040 fprintf (file, _(" -z nodump\t\tMark DSO not available to dldump\n"));
10b4329d 2041 fprintf (file, _(" -z noexecstack\tMark executable as not requiring executable stack\n"));
88b882e9
L
2042EOF
2043
2044 if test -n "$COMMONPAGESIZE"; then
2045cat >>e${EMULATION_NAME}.c <<EOF
8c37241b 2046 fprintf (file, _(" -z norelro\t\tDon't create RELRO program header\n"));
88b882e9
L
2047EOF
2048 fi
2049
2050cat >>e${EMULATION_NAME}.c <<EOF
e0ee487b 2051 fprintf (file, _(" -z now\t\tMark object non-lazy runtime binding\n"));
73e87d70 2052 fprintf (file, _(" -z origin\t\tMark object requiring immediate \$ORIGIN processing\n\t\t\t at runtime\n"));
88b882e9
L
2053EOF
2054
2055 if test -n "$COMMONPAGESIZE"; then
2056cat >>e${EMULATION_NAME}.c <<EOF
8c37241b 2057 fprintf (file, _(" -z relro\t\tCreate RELRO program header\n"));
88b882e9
L
2058EOF
2059 fi
2060
2061cat >>e${EMULATION_NAME}.c <<EOF
24718e3b
L
2062 fprintf (file, _(" -z max-page-size=SIZE\tSet maximum page size to SIZE\n"));
2063 fprintf (file, _(" -z common-page-size=SIZE\n\t\t\tSet common page size to SIZE\n"));
19e3be22 2064 fprintf (file, _(" -z KEYWORD\t\tIgnored for Solaris compatibility\n"));
e0ee487b
L
2065EOF
2066fi
2067
2068if test -n "$PARSE_AND_LIST_OPTIONS" ; then
2069cat >>e${EMULATION_NAME}.c <<EOF
2070 $PARSE_AND_LIST_OPTIONS
2071EOF
2072fi
2073
e0ee487b
L
2074cat >>e${EMULATION_NAME}.c <<EOF
2075}
2076EOF
e0ee487b
L
2077
2078if test -n "$PARSE_AND_LIST_EPILOGUE" ; then
2079cat >>e${EMULATION_NAME}.c <<EOF
2080 $PARSE_AND_LIST_EPILOGUE
2081EOF
2082fi
41392f03
AM
2083fi
2084else
41392f03 2085cat >>e${EMULATION_NAME}.c <<EOF
3bcf5557
AM
2086#define gld${EMULATION_NAME}_add_options NULL
2087#define gld${EMULATION_NAME}_handle_option NULL
41392f03 2088EOF
4b209b22 2089if test x"$LDEMUL_LIST_OPTIONS" != xgld"$EMULATION_NAME"_list_options; then
41392f03 2090cat >>e${EMULATION_NAME}.c <<EOF
4b209b22 2091#define gld${EMULATION_NAME}_list_options NULL
41392f03
AM
2092EOF
2093fi
2094fi
e0ee487b 2095
252b5132
RH
2096cat >>e${EMULATION_NAME}.c <<EOF
2097
60bcf0fa 2098struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
252b5132 2099{
41392f03
AM
2100 ${LDEMUL_BEFORE_PARSE-gld${EMULATION_NAME}_before_parse},
2101 ${LDEMUL_SYSLIB-syslib_default},
2102 ${LDEMUL_HLL-hll_default},
2103 ${LDEMUL_AFTER_PARSE-after_parse_default},
2104 ${LDEMUL_AFTER_OPEN-gld${EMULATION_NAME}_after_open},
2105 ${LDEMUL_AFTER_ALLOCATION-after_allocation_default},
2106 ${LDEMUL_SET_OUTPUT_ARCH-set_output_arch_default},
2107 ${LDEMUL_CHOOSE_TARGET-ldemul_default_target},
2108 ${LDEMUL_BEFORE_ALLOCATION-gld${EMULATION_NAME}_before_allocation},
2109 ${LDEMUL_GET_SCRIPT-gld${EMULATION_NAME}_get_script},
252b5132
RH
2110 "${EMULATION_NAME}",
2111 "${OUTPUT_FORMAT}",
c56feb2b 2112 ${LDEMUL_FINISH-gld${EMULATION_NAME}_finish},
41392f03
AM
2113 ${LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS-NULL},
2114 ${LDEMUL_OPEN_DYNAMIC_ARCHIVE-gld${EMULATION_NAME}_open_dynamic_archive},
2115 ${LDEMUL_PLACE_ORPHAN-gld${EMULATION_NAME}_place_orphan},
2116 ${LDEMUL_SET_SYMBOLS-NULL},
3bcf5557
AM
2117 ${LDEMUL_PARSE_ARGS-NULL},
2118 gld${EMULATION_NAME}_add_options,
2119 gld${EMULATION_NAME}_handle_option,
41392f03 2120 ${LDEMUL_UNRECOGNIZED_FILE-NULL},
4b209b22 2121 ${LDEMUL_LIST_OPTIONS-gld${EMULATION_NAME}_list_options},
4a43e768 2122 ${LDEMUL_RECOGNIZED_FILE-gld${EMULATION_NAME}_load_symbols},
41392f03 2123 ${LDEMUL_FIND_POTENTIAL_LIBRARIES-NULL},
fac1652d 2124 ${LDEMUL_NEW_VERS_PATTERN-NULL}
252b5132
RH
2125};
2126EOF
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