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Support x32 sigtramp
[deliverable/binutils-gdb.git] / bfd / elf.c
CommitLineData
252b5132 1/* ELF executable support for BFD.
340b6d91
AC		 2
3 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
9f296da3 4 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
72a80a16 5 Free Software Foundation, Inc.
252b5132 6
5e8d7549 7 This file is part of BFD, the Binary File Descriptor library.
252b5132 8
5e8d7549
NC		 9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
cd123cb7 11 the Free Software Foundation; either version 3 of the License, or
5e8d7549 12 (at your option) any later version.
252b5132 13
5e8d7549
NC		 14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
252b5132 18
5e8d7549 19 You should have received a copy of the GNU General Public License
b34976b6 20 along with this program; if not, write to the Free Software
cd123cb7
NC		 21 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
23
252b5132 24
1b74d094
BW		 25/*
26SECTION
252b5132
RH		 27 ELF backends
28
29 BFD support for ELF formats is being worked on.
30 Currently, the best supported back ends are for sparc and i386
31 (running svr4 or Solaris 2).
32
33 Documentation of the internals of the support code still needs
34 to be written. The code is changing quickly enough that we
661a3fd4 35 haven't bothered yet. */
252b5132 36
7ee38065
MS		 37/* For sparc64-cross-sparc32. */
38#define _SYSCALL32
252b5132 39#include "sysdep.h"
3db64b00 40#include "bfd.h"
252b5132
RH		 41#include "bfdlink.h"
42#include "libbfd.h"
43#define ARCH_SIZE 0
44#include "elf-bfd.h"
e0e8c97f 45#include "libiberty.h"
ff59fc36 46#include "safe-ctype.h"
252b5132 47
8bc7f138
L		 48#ifdef CORE_HEADER
49#include CORE_HEADER
50#endif
51
217aa764 52static int elf_sort_sections (const void *, const void *);
c84fca4d 53static bfd_boolean assign_file_positions_except_relocs (bfd *, struct bfd_link_info *);
217aa764
AM		 54static bfd_boolean prep_headers (bfd *);
55static bfd_boolean swap_out_syms (bfd *, struct bfd_strtab_hash **, int) ;
718175fa
JK		 56static bfd_boolean elf_read_notes (bfd *, file_ptr, bfd_size_type) ;
57static bfd_boolean elf_parse_notes (bfd *abfd, char *buf, size_t size,
58 file_ptr offset);
50b2bdb7 59
252b5132
RH		 60/* Swap version information in and out. The version information is
61 currently size independent. If that ever changes, this code will
62 need to move into elfcode.h. */
63
64/* Swap in a Verdef structure. */
65
66void
217aa764
AM		 67_bfd_elf_swap_verdef_in (bfd *abfd,
68 const Elf_External_Verdef *src,
69 Elf_Internal_Verdef *dst)
252b5132 70{
dc810e39
AM		 71 dst->vd_version = H_GET_16 (abfd, src->vd_version);
72 dst->vd_flags = H_GET_16 (abfd, src->vd_flags);
73 dst->vd_ndx = H_GET_16 (abfd, src->vd_ndx);
74 dst->vd_cnt = H_GET_16 (abfd, src->vd_cnt);
75 dst->vd_hash = H_GET_32 (abfd, src->vd_hash);
76 dst->vd_aux = H_GET_32 (abfd, src->vd_aux);
77 dst->vd_next = H_GET_32 (abfd, src->vd_next);
252b5132
RH		 78}
79
80/* Swap out a Verdef structure. */
81
82void
217aa764
AM		 83_bfd_elf_swap_verdef_out (bfd *abfd,
84 const Elf_Internal_Verdef *src,
85 Elf_External_Verdef *dst)
252b5132 86{
dc810e39
AM		 87 H_PUT_16 (abfd, src->vd_version, dst->vd_version);
88 H_PUT_16 (abfd, src->vd_flags, dst->vd_flags);
89 H_PUT_16 (abfd, src->vd_ndx, dst->vd_ndx);
90 H_PUT_16 (abfd, src->vd_cnt, dst->vd_cnt);
91 H_PUT_32 (abfd, src->vd_hash, dst->vd_hash);
92 H_PUT_32 (abfd, src->vd_aux, dst->vd_aux);
93 H_PUT_32 (abfd, src->vd_next, dst->vd_next);
252b5132
RH		 94}
95
96/* Swap in a Verdaux structure. */
97
98void
217aa764
AM		 99_bfd_elf_swap_verdaux_in (bfd *abfd,
100 const Elf_External_Verdaux *src,
101 Elf_Internal_Verdaux *dst)
252b5132 102{
dc810e39
AM		 103 dst->vda_name = H_GET_32 (abfd, src->vda_name);
104 dst->vda_next = H_GET_32 (abfd, src->vda_next);
252b5132
RH		 105}
106
107/* Swap out a Verdaux structure. */
108
109void
217aa764
AM		 110_bfd_elf_swap_verdaux_out (bfd *abfd,
111 const Elf_Internal_Verdaux *src,
112 Elf_External_Verdaux *dst)
252b5132 113{
dc810e39
AM		 114 H_PUT_32 (abfd, src->vda_name, dst->vda_name);
115 H_PUT_32 (abfd, src->vda_next, dst->vda_next);
252b5132
RH		 116}
117
118/* Swap in a Verneed structure. */
119
120void
217aa764
AM		 121_bfd_elf_swap_verneed_in (bfd *abfd,
122 const Elf_External_Verneed *src,
123 Elf_Internal_Verneed *dst)
252b5132 124{
dc810e39
AM		 125 dst->vn_version = H_GET_16 (abfd, src->vn_version);
126 dst->vn_cnt = H_GET_16 (abfd, src->vn_cnt);
127 dst->vn_file = H_GET_32 (abfd, src->vn_file);
128 dst->vn_aux = H_GET_32 (abfd, src->vn_aux);
129 dst->vn_next = H_GET_32 (abfd, src->vn_next);
252b5132
RH		 130}
131
132/* Swap out a Verneed structure. */
133
134void
217aa764
AM		 135_bfd_elf_swap_verneed_out (bfd *abfd,
136 const Elf_Internal_Verneed *src,
137 Elf_External_Verneed *dst)
252b5132 138{
dc810e39
AM		 139 H_PUT_16 (abfd, src->vn_version, dst->vn_version);
140 H_PUT_16 (abfd, src->vn_cnt, dst->vn_cnt);
141 H_PUT_32 (abfd, src->vn_file, dst->vn_file);
142 H_PUT_32 (abfd, src->vn_aux, dst->vn_aux);
143 H_PUT_32 (abfd, src->vn_next, dst->vn_next);
252b5132
RH		 144}
145
146/* Swap in a Vernaux structure. */
147
148void
217aa764
AM		 149_bfd_elf_swap_vernaux_in (bfd *abfd,
150 const Elf_External_Vernaux *src,
151 Elf_Internal_Vernaux *dst)
252b5132 152{
dc810e39
AM		 153 dst->vna_hash = H_GET_32 (abfd, src->vna_hash);
154 dst->vna_flags = H_GET_16 (abfd, src->vna_flags);
155 dst->vna_other = H_GET_16 (abfd, src->vna_other);
156 dst->vna_name = H_GET_32 (abfd, src->vna_name);
157 dst->vna_next = H_GET_32 (abfd, src->vna_next);
252b5132
RH		 158}
159
160/* Swap out a Vernaux structure. */
161
162void
217aa764
AM		 163_bfd_elf_swap_vernaux_out (bfd *abfd,
164 const Elf_Internal_Vernaux *src,
165 Elf_External_Vernaux *dst)
252b5132 166{
dc810e39
AM		 167 H_PUT_32 (abfd, src->vna_hash, dst->vna_hash);
168 H_PUT_16 (abfd, src->vna_flags, dst->vna_flags);
169 H_PUT_16 (abfd, src->vna_other, dst->vna_other);
170 H_PUT_32 (abfd, src->vna_name, dst->vna_name);
171 H_PUT_32 (abfd, src->vna_next, dst->vna_next);
252b5132
RH		 172}
173
174/* Swap in a Versym structure. */
175
176void
217aa764
AM		 177_bfd_elf_swap_versym_in (bfd *abfd,
178 const Elf_External_Versym *src,
179 Elf_Internal_Versym *dst)
252b5132 180{
dc810e39 181 dst->vs_vers = H_GET_16 (abfd, src->vs_vers);
252b5132
RH		 182}
183
184/* Swap out a Versym structure. */
185
186void
217aa764
AM		 187_bfd_elf_swap_versym_out (bfd *abfd,
188 const Elf_Internal_Versym *src,
189 Elf_External_Versym *dst)
252b5132 190{
dc810e39 191 H_PUT_16 (abfd, src->vs_vers, dst->vs_vers);
252b5132
RH		 192}
193
194/* Standard ELF hash function. Do not change this function; you will
195 cause invalid hash tables to be generated. */
3a99b017 196
252b5132 197unsigned long
217aa764 198bfd_elf_hash (const char *namearg)
252b5132 199{
3a99b017 200 const unsigned char *name = (const unsigned char *) namearg;
252b5132
RH		 201 unsigned long h = 0;
202 unsigned long g;
203 int ch;
204
205 while ((ch = *name++) != '\0')
206 {
207 h = (h << 4) + ch;
208 if ((g = (h & 0xf0000000)) != 0)
209 {
210 h ^= g >> 24;
211 /* The ELF ABI says `h &= ~g', but this is equivalent in
212 this case and on some machines one insn instead of two. */
213 h ^= g;
214 }
215 }
32dfa85d 216 return h & 0xffffffff;
252b5132
RH		 217}
218
fdc90cb4
JJ		 219/* DT_GNU_HASH hash function. Do not change this function; you will
220 cause invalid hash tables to be generated. */
221
222unsigned long
223bfd_elf_gnu_hash (const char *namearg)
224{
225 const unsigned char *name = (const unsigned char *) namearg;
226 unsigned long h = 5381;
227 unsigned char ch;
228
229 while ((ch = *name++) != '\0')
230 h = (h << 5) + h + ch;
231 return h & 0xffffffff;
232}
233
0c8d6e5c
AM		 234/* Create a tdata field OBJECT_SIZE bytes in length, zeroed out and with
235 the object_id field of an elf_obj_tdata field set to OBJECT_ID. */
b34976b6 236bfd_boolean
0c8d6e5c 237bfd_elf_allocate_object (bfd *abfd,
0ffa91dd 238 size_t object_size,
4dfe6ac6 239 enum elf_target_id object_id)
252b5132 240{
0ffa91dd
NC		 241 BFD_ASSERT (object_size >= sizeof (struct elf_obj_tdata));
242 abfd->tdata.any = bfd_zalloc (abfd, object_size);
243 if (abfd->tdata.any == NULL)
244 return FALSE;
252b5132 245
0ffa91dd
NC		 246 elf_object_id (abfd) = object_id;
247 elf_program_header_size (abfd) = (bfd_size_type) -1;
b34976b6 248 return TRUE;
252b5132
RH		 249}
250
0ffa91dd
NC		 251
252bfd_boolean
ae95ffa6 253bfd_elf_make_object (bfd *abfd)
0ffa91dd 254{
ae95ffa6 255 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
0ffa91dd 256 return bfd_elf_allocate_object (abfd, sizeof (struct elf_obj_tdata),
ae95ffa6 257 bed->target_id);
0ffa91dd
NC		 258}
259
b34976b6 260bfd_boolean
217aa764 261bfd_elf_mkcorefile (bfd *abfd)
252b5132 262{
c044fabd 263 /* I think this can be done just like an object file. */
ae95ffa6 264 return abfd->xvec->_bfd_set_format[(int) bfd_object] (abfd);
252b5132
RH		 265}
266
72a80a16 267static char *
217aa764 268bfd_elf_get_str_section (bfd *abfd, unsigned int shindex)
252b5132
RH		 269{
270 Elf_Internal_Shdr **i_shdrp;
f075ee0c 271 bfd_byte *shstrtab = NULL;
dc810e39
AM		 272 file_ptr offset;
273 bfd_size_type shstrtabsize;
252b5132
RH		 274
275 i_shdrp = elf_elfsections (abfd);
74f2e02b
AM		 276 if (i_shdrp == 0
277 || shindex >= elf_numsections (abfd)
278 || i_shdrp[shindex] == 0)
f075ee0c 279 return NULL;
252b5132 280
f075ee0c 281 shstrtab = i_shdrp[shindex]->contents;
252b5132
RH		 282 if (shstrtab == NULL)
283 {
c044fabd 284 /* No cached one, attempt to read, and cache what we read. */
252b5132
RH		 285 offset = i_shdrp[shindex]->sh_offset;
286 shstrtabsize = i_shdrp[shindex]->sh_size;
c6c60d09
JJ		 287
288 /* Allocate and clear an extra byte at the end, to prevent crashes
289 in case the string table is not terminated. */
3471d59d 290 if (shstrtabsize + 1 <= 1
a50b1753 291 || (shstrtab = (bfd_byte *) bfd_alloc (abfd, shstrtabsize + 1)) == NULL
c6c60d09
JJ		 292 || bfd_seek (abfd, offset, SEEK_SET) != 0)
293 shstrtab = NULL;
294 else if (bfd_bread (shstrtab, shstrtabsize, abfd) != shstrtabsize)
295 {
296 if (bfd_get_error () != bfd_error_system_call)
297 bfd_set_error (bfd_error_file_truncated);
298 shstrtab = NULL;
3471d59d
CC		 299 /* Once we've failed to read it, make sure we don't keep
300 trying. Otherwise, we'll keep allocating space for
301 the string table over and over. */
302 i_shdrp[shindex]->sh_size = 0;
c6c60d09
JJ		 303 }
304 else
305 shstrtab[shstrtabsize] = '\0';
217aa764 306 i_shdrp[shindex]->contents = shstrtab;
252b5132 307 }
f075ee0c 308 return (char *) shstrtab;
252b5132
RH		 309}
310
311char *
217aa764
AM		 312bfd_elf_string_from_elf_section (bfd *abfd,
313 unsigned int shindex,
314 unsigned int strindex)
252b5132
RH		 315{
316 Elf_Internal_Shdr *hdr;
317
318 if (strindex == 0)
319 return "";
320
74f2e02b
AM		 321 if (elf_elfsections (abfd) == NULL || shindex >= elf_numsections (abfd))
322 return NULL;
323
252b5132
RH		 324 hdr = elf_elfsections (abfd)[shindex];
325
326 if (hdr->contents == NULL
327 && bfd_elf_get_str_section (abfd, shindex) == NULL)
328 return NULL;
329
330 if (strindex >= hdr->sh_size)
331 {
1b3a8575 332 unsigned int shstrndx = elf_elfheader(abfd)->e_shstrndx;
252b5132 333 (*_bfd_error_handler)
d003868e
AM		 334 (_("%B: invalid string offset %u >= %lu for section `%s'"),
335 abfd, strindex, (unsigned long) hdr->sh_size,
1b3a8575 336 (shindex == shstrndx && strindex == hdr->sh_name
252b5132 337 ? ".shstrtab"
1b3a8575 338 : bfd_elf_string_from_elf_section (abfd, shstrndx, hdr->sh_name)));
45b222d6 339 return NULL;
252b5132
RH		 340 }
341
342 return ((char *) hdr->contents) + strindex;
343}
344
6cdc0ccc
AM		 345/* Read and convert symbols to internal format.
346 SYMCOUNT specifies the number of symbols to read, starting from
347 symbol SYMOFFSET. If any of INTSYM_BUF, EXTSYM_BUF or EXTSHNDX_BUF
348 are non-NULL, they are used to store the internal symbols, external
b7c368d0
NC		 349 symbols, and symbol section index extensions, respectively.
350 Returns a pointer to the internal symbol buffer (malloced if necessary)
351 or NULL if there were no symbols or some kind of problem. */
6cdc0ccc
AM		 352
353Elf_Internal_Sym *
217aa764
AM		 354bfd_elf_get_elf_syms (bfd *ibfd,
355 Elf_Internal_Shdr *symtab_hdr,
356 size_t symcount,
357 size_t symoffset,
358 Elf_Internal_Sym *intsym_buf,
359 void *extsym_buf,
360 Elf_External_Sym_Shndx *extshndx_buf)
6cdc0ccc
AM		 361{
362 Elf_Internal_Shdr *shndx_hdr;
217aa764 363 void *alloc_ext;
df622259 364 const bfd_byte *esym;
6cdc0ccc
AM		 365 Elf_External_Sym_Shndx *alloc_extshndx;
366 Elf_External_Sym_Shndx *shndx;
4dd07732 367 Elf_Internal_Sym *alloc_intsym;
6cdc0ccc
AM		 368 Elf_Internal_Sym *isym;
369 Elf_Internal_Sym *isymend;
9c5bfbb7 370 const struct elf_backend_data *bed;
6cdc0ccc
AM		 371 size_t extsym_size;
372 bfd_size_type amt;
373 file_ptr pos;
374
e44a2c9c
AM		 375 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
376 abort ();
377
6cdc0ccc
AM		 378 if (symcount == 0)
379 return intsym_buf;
380
381 /* Normal syms might have section extension entries. */
382 shndx_hdr = NULL;
383 if (symtab_hdr == &elf_tdata (ibfd)->symtab_hdr)
384 shndx_hdr = &elf_tdata (ibfd)->symtab_shndx_hdr;
385
386 /* Read the symbols. */
387 alloc_ext = NULL;
388 alloc_extshndx = NULL;
4dd07732 389 alloc_intsym = NULL;
6cdc0ccc
AM		 390 bed = get_elf_backend_data (ibfd);
391 extsym_size = bed->s->sizeof_sym;
392 amt = symcount * extsym_size;
393 pos = symtab_hdr->sh_offset + symoffset * extsym_size;
394 if (extsym_buf == NULL)
395 {
d0fb9a8d 396 alloc_ext = bfd_malloc2 (symcount, extsym_size);
6cdc0ccc
AM		 397 extsym_buf = alloc_ext;
398 }
399 if (extsym_buf == NULL
400 || bfd_seek (ibfd, pos, SEEK_SET) != 0
401 || bfd_bread (extsym_buf, amt, ibfd) != amt)
402 {
403 intsym_buf = NULL;
404 goto out;
405 }
406
407 if (shndx_hdr == NULL || shndx_hdr->sh_size == 0)
408 extshndx_buf = NULL;
409 else
410 {
411 amt = symcount * sizeof (Elf_External_Sym_Shndx);
412 pos = shndx_hdr->sh_offset + symoffset * sizeof (Elf_External_Sym_Shndx);
413 if (extshndx_buf == NULL)
414 {
a50b1753
NC		 415 alloc_extshndx = (Elf_External_Sym_Shndx *)
416 bfd_malloc2 (symcount, sizeof (Elf_External_Sym_Shndx));
6cdc0ccc
AM		 417 extshndx_buf = alloc_extshndx;
418 }
419 if (extshndx_buf == NULL
420 || bfd_seek (ibfd, pos, SEEK_SET) != 0
421 || bfd_bread (extshndx_buf, amt, ibfd) != amt)
422 {
423 intsym_buf = NULL;
424 goto out;
425 }
426 }
427
428 if (intsym_buf == NULL)
429 {
a50b1753
NC		 430 alloc_intsym = (Elf_Internal_Sym *)
431 bfd_malloc2 (symcount, sizeof (Elf_Internal_Sym));
4dd07732 432 intsym_buf = alloc_intsym;
6cdc0ccc
AM		 433 if (intsym_buf == NULL)
434 goto out;
435 }
436
437 /* Convert the symbols to internal form. */
438 isymend = intsym_buf + symcount;
a50b1753
NC		 439 for (esym = (const bfd_byte *) extsym_buf, isym = intsym_buf,
440 shndx = extshndx_buf;
6cdc0ccc
AM		 441 isym < isymend;
442 esym += extsym_size, isym++, shndx = shndx != NULL ? shndx + 1 : NULL)
8384fb8f
AM		 443 if (!(*bed->s->swap_symbol_in) (ibfd, esym, shndx, isym))
444 {
445 symoffset += (esym - (bfd_byte *) extsym_buf) / extsym_size;
446 (*_bfd_error_handler) (_("%B symbol number %lu references "
447 "nonexistent SHT_SYMTAB_SHNDX section"),
448 ibfd, (unsigned long) symoffset);
4dd07732
AM		 449 if (alloc_intsym != NULL)
450 free (alloc_intsym);
8384fb8f
AM		 451 intsym_buf = NULL;
452 goto out;
453 }
6cdc0ccc
AM		 454
455 out:
456 if (alloc_ext != NULL)
457 free (alloc_ext);
458 if (alloc_extshndx != NULL)
459 free (alloc_extshndx);
460
461 return intsym_buf;
462}
463
5cab59f6
AM		 464/* Look up a symbol name. */
465const char *
be8dd2ca
AM		 466bfd_elf_sym_name (bfd *abfd,
467 Elf_Internal_Shdr *symtab_hdr,
26c61ae5
L		 468 Elf_Internal_Sym *isym,
469 asection *sym_sec)
5cab59f6 470{
26c61ae5 471 const char *name;
5cab59f6 472 unsigned int iname = isym->st_name;
be8dd2ca 473 unsigned int shindex = symtab_hdr->sh_link;
26c61ae5 474
138f35cc
JJ		 475 if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION
476 /* Check for a bogus st_shndx to avoid crashing. */
4fbb74a6 477 && isym->st_shndx < elf_numsections (abfd))
5cab59f6
AM		 478 {
479 iname = elf_elfsections (abfd)[isym->st_shndx]->sh_name;
480 shindex = elf_elfheader (abfd)->e_shstrndx;
481 }
482
26c61ae5
L		 483 name = bfd_elf_string_from_elf_section (abfd, shindex, iname);
484 if (name == NULL)
485 name = "(null)";
486 else if (sym_sec && *name == '\0')
487 name = bfd_section_name (abfd, sym_sec);
488
489 return name;
5cab59f6
AM		 490}
491
dbb410c3
AM		 492/* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP
493 sections. The first element is the flags, the rest are section
494 pointers. */
495
496typedef union elf_internal_group {
497 Elf_Internal_Shdr *shdr;
498 unsigned int flags;
499} Elf_Internal_Group;
500
b885599b
AM		 501/* Return the name of the group signature symbol. Why isn't the
502 signature just a string? */
503
504static const char *
217aa764 505group_signature (bfd *abfd, Elf_Internal_Shdr *ghdr)
b885599b 506{
9dce4196 507 Elf_Internal_Shdr *hdr;
9dce4196
AM		 508 unsigned char esym[sizeof (Elf64_External_Sym)];
509 Elf_External_Sym_Shndx eshndx;
510 Elf_Internal_Sym isym;
b885599b 511
13792e9d
L		 512 /* First we need to ensure the symbol table is available. Make sure
513 that it is a symbol table section. */
4fbb74a6
AM		 514 if (ghdr->sh_link >= elf_numsections (abfd))
515 return NULL;
13792e9d
L		 516 hdr = elf_elfsections (abfd) [ghdr->sh_link];
517 if (hdr->sh_type != SHT_SYMTAB
518 || ! bfd_section_from_shdr (abfd, ghdr->sh_link))
b885599b
AM		 519 return NULL;
520
9dce4196
AM		 521 /* Go read the symbol. */
522 hdr = &elf_tdata (abfd)->symtab_hdr;
6cdc0ccc
AM		 523 if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info,
524 &isym, esym, &eshndx) == NULL)
b885599b 525 return NULL;
9dce4196 526
26c61ae5 527 return bfd_elf_sym_name (abfd, hdr, &isym, NULL);
b885599b
AM		 528}
529
dbb410c3
AM		 530/* Set next_in_group list pointer, and group name for NEWSECT. */
531
b34976b6 532static bfd_boolean
217aa764 533setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect)
dbb410c3
AM		 534{
535 unsigned int num_group = elf_tdata (abfd)->num_group;
536
537 /* If num_group is zero, read in all SHT_GROUP sections. The count
538 is set to -1 if there are no SHT_GROUP sections. */
539 if (num_group == 0)
540 {
541 unsigned int i, shnum;
542
543 /* First count the number of groups. If we have a SHT_GROUP
544 section with just a flag word (ie. sh_size is 4), ignore it. */
9ad5cbcf 545 shnum = elf_numsections (abfd);
dbb410c3 546 num_group = 0;
08a40648 547
1783205a
NC		 548#define IS_VALID_GROUP_SECTION_HEADER(shdr) \
549 ( (shdr)->sh_type == SHT_GROUP \
550 && (shdr)->sh_size >= (2 * GRP_ENTRY_SIZE) \
551 && (shdr)->sh_entsize == GRP_ENTRY_SIZE \
552 && ((shdr)->sh_size % GRP_ENTRY_SIZE) == 0)
08a40648 553
dbb410c3
AM		 554 for (i = 0; i < shnum; i++)
555 {
556 Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i];
1783205a
NC		 557
558 if (IS_VALID_GROUP_SECTION_HEADER (shdr))
dbb410c3
AM		 559 num_group += 1;
560 }
561
562 if (num_group == 0)
20dbb49d
L		 563 {
564 num_group = (unsigned) -1;
565 elf_tdata (abfd)->num_group = num_group;
566 }
567 else
dbb410c3
AM		 568 {
569 /* We keep a list of elf section headers for group sections,
570 so we can find them quickly. */
20dbb49d 571 bfd_size_type amt;
d0fb9a8d 572
20dbb49d 573 elf_tdata (abfd)->num_group = num_group;
a50b1753
NC		 574 elf_tdata (abfd)->group_sect_ptr = (Elf_Internal_Shdr **)
575 bfd_alloc2 (abfd, num_group, sizeof (Elf_Internal_Shdr *));
dbb410c3 576 if (elf_tdata (abfd)->group_sect_ptr == NULL)
b34976b6 577 return FALSE;
dbb410c3
AM		 578
579 num_group = 0;
580 for (i = 0; i < shnum; i++)
581 {
582 Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i];
1783205a
NC		 583
584 if (IS_VALID_GROUP_SECTION_HEADER (shdr))
dbb410c3 585 {
973ffd63 586 unsigned char *src;
dbb410c3
AM		 587 Elf_Internal_Group *dest;
588
589 /* Add to list of sections. */
590 elf_tdata (abfd)->group_sect_ptr[num_group] = shdr;
591 num_group += 1;
592
593 /* Read the raw contents. */
594 BFD_ASSERT (sizeof (*dest) >= 4);
595 amt = shdr->sh_size * sizeof (*dest) / 4;
a50b1753
NC		 596 shdr->contents = (unsigned char *)
597 bfd_alloc2 (abfd, shdr->sh_size, sizeof (*dest) / 4);
1783205a
NC		 598 /* PR binutils/4110: Handle corrupt group headers. */
599 if (shdr->contents == NULL)
600 {
601 _bfd_error_handler
602 (_("%B: Corrupt size field in group section header: 0x%lx"), abfd, shdr->sh_size);
603 bfd_set_error (bfd_error_bad_value);
604 return FALSE;
605 }
606
607 memset (shdr->contents, 0, amt);
608
609 if (bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0
dbb410c3
AM		 610 || (bfd_bread (shdr->contents, shdr->sh_size, abfd)
611 != shdr->sh_size))
b34976b6 612 return FALSE;
dbb410c3
AM		 613
614 /* Translate raw contents, a flag word followed by an
615 array of elf section indices all in target byte order,
616 to the flag word followed by an array of elf section
617 pointers. */
618 src = shdr->contents + shdr->sh_size;
619 dest = (Elf_Internal_Group *) (shdr->contents + amt);
620 while (1)
621 {
622 unsigned int idx;
623
624 src -= 4;
625 --dest;
626 idx = H_GET_32 (abfd, src);
627 if (src == shdr->contents)
628 {
629 dest->flags = idx;
b885599b
AM		 630 if (shdr->bfd_section != NULL && (idx & GRP_COMDAT))
631 shdr->bfd_section->flags
632 |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
dbb410c3
AM		 633 break;
634 }
635 if (idx >= shnum)
636 {
637 ((*_bfd_error_handler)
d003868e 638 (_("%B: invalid SHT_GROUP entry"), abfd));
dbb410c3
AM		 639 idx = 0;
640 }
641 dest->shdr = elf_elfsections (abfd)[idx];
642 }
643 }
644 }
645 }
646 }
647
648 if (num_group != (unsigned) -1)
649 {
650 unsigned int i;
651
652 for (i = 0; i < num_group; i++)
653 {
654 Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i];
655 Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents;
656 unsigned int n_elt = shdr->sh_size / 4;
657
658 /* Look through this group's sections to see if current
659 section is a member. */
660 while (--n_elt != 0)
661 if ((++idx)->shdr == hdr)
662 {
e0e8c97f 663 asection *s = NULL;
dbb410c3
AM		 664
665 /* We are a member of this group. Go looking through
666 other members to see if any others are linked via
667 next_in_group. */
668 idx = (Elf_Internal_Group *) shdr->contents;
669 n_elt = shdr->sh_size / 4;
670 while (--n_elt != 0)
671 if ((s = (++idx)->shdr->bfd_section) != NULL
945906ff 672 && elf_next_in_group (s) != NULL)
dbb410c3
AM		 673 break;
674 if (n_elt != 0)
675 {
dbb410c3
AM		 676 /* Snarf the group name from other member, and
677 insert current section in circular list. */
945906ff
AM		 678 elf_group_name (newsect) = elf_group_name (s);
679 elf_next_in_group (newsect) = elf_next_in_group (s);
680 elf_next_in_group (s) = newsect;
dbb410c3
AM		 681 }
682 else
683 {
dbb410c3
AM		 684 const char *gname;
685
b885599b
AM		 686 gname = group_signature (abfd, shdr);
687 if (gname == NULL)
b34976b6 688 return FALSE;
945906ff 689 elf_group_name (newsect) = gname;
dbb410c3
AM		 690
691 /* Start a circular list with one element. */
945906ff 692 elf_next_in_group (newsect) = newsect;
dbb410c3 693 }
b885599b 694
9dce4196
AM		 695 /* If the group section has been created, point to the
696 new member. */
dbb410c3 697 if (shdr->bfd_section != NULL)
945906ff 698 elf_next_in_group (shdr->bfd_section) = newsect;
b885599b 699
dbb410c3
AM		 700 i = num_group - 1;
701 break;
702 }
703 }
704 }
705
945906ff 706 if (elf_group_name (newsect) == NULL)
dbb410c3 707 {
d003868e
AM		 708 (*_bfd_error_handler) (_("%B: no group info for section %A"),
709 abfd, newsect);
dbb410c3 710 }
b34976b6 711 return TRUE;
dbb410c3
AM		 712}
713
3d7f7666 714bfd_boolean
dd863624 715_bfd_elf_setup_sections (bfd *abfd)
3d7f7666
L		 716{
717 unsigned int i;
718 unsigned int num_group = elf_tdata (abfd)->num_group;
719 bfd_boolean result = TRUE;
dd863624
L		 720 asection *s;
721
722 /* Process SHF_LINK_ORDER. */
723 for (s = abfd->sections; s != NULL; s = s->next)
724 {
725 Elf_Internal_Shdr *this_hdr = &elf_section_data (s)->this_hdr;
726 if ((this_hdr->sh_flags & SHF_LINK_ORDER) != 0)
727 {
728 unsigned int elfsec = this_hdr->sh_link;
729 /* FIXME: The old Intel compiler and old strip/objcopy may
730 not set the sh_link or sh_info fields. Hence we could
731 get the situation where elfsec is 0. */
732 if (elfsec == 0)
733 {
4fbb74a6 734 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
dd863624
L		 735 if (bed->link_order_error_handler)
736 bed->link_order_error_handler
737 (_("%B: warning: sh_link not set for section `%A'"),
738 abfd, s);
739 }
740 else
741 {
91d6fa6a 742 asection *linksec = NULL;
25bbc984 743
4fbb74a6
AM		 744 if (elfsec < elf_numsections (abfd))
745 {
746 this_hdr = elf_elfsections (abfd)[elfsec];
91d6fa6a 747 linksec = this_hdr->bfd_section;
4fbb74a6 748 }
25bbc984
L		 749
750 /* PR 1991, 2008:
751 Some strip/objcopy may leave an incorrect value in
752 sh_link. We don't want to proceed. */
91d6fa6a 753 if (linksec == NULL)
25bbc984
L		 754 {
755 (*_bfd_error_handler)
756 (_("%B: sh_link [%d] in section `%A' is incorrect"),
757 s->owner, s, elfsec);
758 result = FALSE;
759 }
760
91d6fa6a 761 elf_linked_to_section (s) = linksec;
dd863624
L		 762 }
763 }
764 }
3d7f7666 765
dd863624 766 /* Process section groups. */
3d7f7666
L		 767 if (num_group == (unsigned) -1)
768 return result;
769
770 for (i = 0; i < num_group; i++)
771 {
772 Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i];
773 Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents;
774 unsigned int n_elt = shdr->sh_size / 4;
775
776 while (--n_elt != 0)
777 if ((++idx)->shdr->bfd_section)
778 elf_sec_group (idx->shdr->bfd_section) = shdr->bfd_section;
779 else if (idx->shdr->sh_type == SHT_RELA
780 || idx->shdr->sh_type == SHT_REL)
781 /* We won't include relocation sections in section groups in
782 output object files. We adjust the group section size here
783 so that relocatable link will work correctly when
784 relocation sections are in section group in input object
785 files. */
786 shdr->bfd_section->size -= 4;
787 else
788 {
789 /* There are some unknown sections in the group. */
790 (*_bfd_error_handler)
d003868e
AM		 791 (_("%B: unknown [%d] section `%s' in group [%s]"),
792 abfd,
3d7f7666 793 (unsigned int) idx->shdr->sh_type,
1b3a8575
AM		 794 bfd_elf_string_from_elf_section (abfd,
795 (elf_elfheader (abfd)
796 ->e_shstrndx),
797 idx->shdr->sh_name),
3d7f7666
L		 798 shdr->bfd_section->name);
799 result = FALSE;
800 }
801 }
802 return result;
803}
804
72adc230
AM		 805bfd_boolean
806bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec)
807{
808 return elf_next_in_group (sec) != NULL;
809}
810
252b5132
RH		 811/* Make a BFD section from an ELF section. We store a pointer to the
812 BFD section in the bfd_section field of the header. */
813
b34976b6 814bfd_boolean
217aa764
AM		 815_bfd_elf_make_section_from_shdr (bfd *abfd,
816 Elf_Internal_Shdr *hdr,
6dc132d9
L		 817 const char *name,
818 int shindex)
252b5132
RH		 819{
820 asection *newsect;
821 flagword flags;
9c5bfbb7 822 const struct elf_backend_data *bed;
252b5132
RH		 823
824 if (hdr->bfd_section != NULL)
4e011fb5 825 return TRUE;
252b5132
RH		 826
827 newsect = bfd_make_section_anyway (abfd, name);
828 if (newsect == NULL)
b34976b6 829 return FALSE;
252b5132 830
1829f4b2
AM		 831 hdr->bfd_section = newsect;
832 elf_section_data (newsect)->this_hdr = *hdr;
6dc132d9 833 elf_section_data (newsect)->this_idx = shindex;
1829f4b2 834
2f89ff8d
L		 835 /* Always use the real type/flags. */
836 elf_section_type (newsect) = hdr->sh_type;
837 elf_section_flags (newsect) = hdr->sh_flags;
838
252b5132
RH		 839 newsect->filepos = hdr->sh_offset;
840
841 if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr)
842 || ! bfd_set_section_size (abfd, newsect, hdr->sh_size)
843 || ! bfd_set_section_alignment (abfd, newsect,
72de5009 844 bfd_log2 (hdr->sh_addralign)))
b34976b6 845 return FALSE;
252b5132
RH		 846
847 flags = SEC_NO_FLAGS;
848 if (hdr->sh_type != SHT_NOBITS)
849 flags |= SEC_HAS_CONTENTS;
dbb410c3 850 if (hdr->sh_type == SHT_GROUP)
b3096250 851 flags |= SEC_GROUP | SEC_EXCLUDE;
252b5132
RH		 852 if ((hdr->sh_flags & SHF_ALLOC) != 0)
853 {
854 flags |= SEC_ALLOC;
855 if (hdr->sh_type != SHT_NOBITS)
856 flags |= SEC_LOAD;
857 }
858 if ((hdr->sh_flags & SHF_WRITE) == 0)
859 flags |= SEC_READONLY;
860 if ((hdr->sh_flags & SHF_EXECINSTR) != 0)
861 flags |= SEC_CODE;
862 else if ((flags & SEC_LOAD) != 0)
863 flags |= SEC_DATA;
f5fa8ca2
JJ		 864 if ((hdr->sh_flags & SHF_MERGE) != 0)
865 {
866 flags |= SEC_MERGE;
867 newsect->entsize = hdr->sh_entsize;
868 if ((hdr->sh_flags & SHF_STRINGS) != 0)
869 flags |= SEC_STRINGS;
870 }
dbb410c3
AM		 871 if (hdr->sh_flags & SHF_GROUP)
872 if (!setup_group (abfd, hdr, newsect))
b34976b6 873 return FALSE;
13ae64f3
JJ		 874 if ((hdr->sh_flags & SHF_TLS) != 0)
875 flags |= SEC_THREAD_LOCAL;
18ae9cc1
L		 876 if ((hdr->sh_flags & SHF_EXCLUDE) != 0)
877 flags |= SEC_EXCLUDE;
252b5132 878
3d2b39cf 879 if ((flags & SEC_ALLOC) == 0)
7a6cc5fb 880 {
3d2b39cf
L		 881 /* The debugging sections appear to be recognized only by name,
882 not any sort of flag. Their SEC_ALLOC bits are cleared. */
883 static const struct
884 {
885 const char *name;
886 int len;
887 } debug_sections [] =
888 {
0112cd26 889 { STRING_COMMA_LEN ("debug") }, /* 'd' */
3d2b39cf
L		 890 { NULL, 0 }, /* 'e' */
891 { NULL, 0 }, /* 'f' */
0112cd26 892 { STRING_COMMA_LEN ("gnu.linkonce.wi.") }, /* 'g' */
3d2b39cf
L		 893 { NULL, 0 }, /* 'h' */
894 { NULL, 0 }, /* 'i' */
895 { NULL, 0 }, /* 'j' */
896 { NULL, 0 }, /* 'k' */
0112cd26 897 { STRING_COMMA_LEN ("line") }, /* 'l' */
3d2b39cf
L		 898 { NULL, 0 }, /* 'm' */
899 { NULL, 0 }, /* 'n' */
900 { NULL, 0 }, /* 'o' */
901 { NULL, 0 }, /* 'p' */
902 { NULL, 0 }, /* 'q' */
903 { NULL, 0 }, /* 'r' */
1b315056
CS		 904 { STRING_COMMA_LEN ("stab") }, /* 's' */
905 { NULL, 0 }, /* 't' */
906 { NULL, 0 }, /* 'u' */
907 { NULL, 0 }, /* 'v' */
908 { NULL, 0 }, /* 'w' */
909 { NULL, 0 }, /* 'x' */
910 { NULL, 0 }, /* 'y' */
911 { STRING_COMMA_LEN ("zdebug") } /* 'z' */
3d2b39cf 912 };
08a40648 913
3d2b39cf
L		 914 if (name [0] == '.')
915 {
916 int i = name [1] - 'd';
917 if (i >= 0
918 && i < (int) ARRAY_SIZE (debug_sections)
919 && debug_sections [i].name != NULL
920 && strncmp (&name [1], debug_sections [i].name,
921 debug_sections [i].len) == 0)
922 flags |= SEC_DEBUGGING;
923 }
924 }
252b5132
RH		 925
926 /* As a GNU extension, if the name begins with .gnu.linkonce, we
927 only link a single copy of the section. This is used to support
928 g++. g++ will emit each template expansion in its own section.
929 The symbols will be defined as weak, so that multiple definitions
930 are permitted. The GNU linker extension is to actually discard
931 all but one of the sections. */
0112cd26 932 if (CONST_STRNEQ (name, ".gnu.linkonce")
b885599b 933 && elf_next_in_group (newsect) == NULL)
252b5132
RH		 934 flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
935
fa152c49
JW		 936 bed = get_elf_backend_data (abfd);
937 if (bed->elf_backend_section_flags)
938 if (! bed->elf_backend_section_flags (&flags, hdr))
b34976b6 939 return FALSE;
fa152c49 940
252b5132 941 if (! bfd_set_section_flags (abfd, newsect, flags))
b34976b6 942 return FALSE;
252b5132 943
718175fa
JK		 944 /* We do not parse the PT_NOTE segments as we are interested even in the
945 separate debug info files which may have the segments offsets corrupted.
946 PT_NOTEs from the core files are currently not parsed using BFD. */
947 if (hdr->sh_type == SHT_NOTE)
948 {
baea7ef1 949 bfd_byte *contents;
718175fa 950
baea7ef1 951 if (!bfd_malloc_and_get_section (abfd, newsect, &contents))
718175fa
JK		 952 return FALSE;
953
baea7ef1 954 elf_parse_notes (abfd, (char *) contents, hdr->sh_size, -1);
718175fa
JK		 955 free (contents);
956 }
957
252b5132
RH		 958 if ((flags & SEC_ALLOC) != 0)
959 {
960 Elf_Internal_Phdr *phdr;
6ffd7900
AM		 961 unsigned int i, nload;
962
963 /* Some ELF linkers produce binaries with all the program header
964 p_paddr fields zero. If we have such a binary with more than
965 one PT_LOAD header, then leave the section lma equal to vma
966 so that we don't create sections with overlapping lma. */
967 phdr = elf_tdata (abfd)->phdr;
968 for (nload = 0, i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++)
969 if (phdr->p_paddr != 0)
970 break;
971 else if (phdr->p_type == PT_LOAD && phdr->p_memsz != 0)
972 ++nload;
973 if (i >= elf_elfheader (abfd)->e_phnum && nload > 1)
974 return TRUE;
252b5132 975
252b5132
RH		 976 phdr = elf_tdata (abfd)->phdr;
977 for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++)
978 {
86b2281f
AM		 979 if (((phdr->p_type == PT_LOAD
980 && (hdr->sh_flags & SHF_TLS) == 0)
981 || phdr->p_type == PT_TLS)
9a83a553 982 && ELF_SECTION_IN_SEGMENT (hdr, phdr))
252b5132 983 {
88967714
AM		 984 if ((flags & SEC_LOAD) == 0)
985 newsect->lma = (phdr->p_paddr
986 + hdr->sh_addr - phdr->p_vaddr);
987 else
988 /* We used to use the same adjustment for SEC_LOAD
989 sections, but that doesn't work if the segment
990 is packed with code from multiple VMAs.
991 Instead we calculate the section LMA based on
992 the segment LMA. It is assumed that the
993 segment will contain sections with contiguous
994 LMAs, even if the VMAs are not. */
995 newsect->lma = (phdr->p_paddr
996 + hdr->sh_offset - phdr->p_offset);
997
998 /* With contiguous segments, we can't tell from file
999 offsets whether a section with zero size should
1000 be placed at the end of one segment or the
1001 beginning of the next. Decide based on vaddr. */
1002 if (hdr->sh_addr >= phdr->p_vaddr
1003 && (hdr->sh_addr + hdr->sh_size
1004 <= phdr->p_vaddr + phdr->p_memsz))
1005 break;
252b5132
RH		 1006 }
1007 }
1008 }
1009
4a114e3e
L		 1010 /* Compress/decompress DWARF debug sections with names: .debug_* and
1011 .zdebug_*, after the section flags is set. */
1012 if ((flags & SEC_DEBUGGING)
1013 && ((name[1] == 'd' && name[6] == '_')
1014 || (name[1] == 'z' && name[7] == '_')))
1015 {
1016 enum { nothing, compress, decompress } action = nothing;
4e011fb5 1017 char *new_name;
4a114e3e
L		 1018
1019 if (bfd_is_section_compressed (abfd, newsect))
1020 {
1021 /* Compressed section. Check if we should decompress. */
1022 if ((abfd->flags & BFD_DECOMPRESS))
1023 action = decompress;
1024 }
1025 else
1026 {
1027 /* Normal section. Check if we should compress. */
1028 if ((abfd->flags & BFD_COMPRESS))
1029 action = compress;
1030 }
1031
4e011fb5 1032 new_name = NULL;
4a114e3e
L		 1033 switch (action)
1034 {
1035 case nothing:
1036 break;
1037 case compress:
1038 if (!bfd_init_section_compress_status (abfd, newsect))
1039 {
1040 (*_bfd_error_handler)
bc823199 1041 (_("%B: unable to initialize compress status for section %s"),
4a114e3e
L		 1042 abfd, name);
1043 return FALSE;
1044 }
4e011fb5
AM		 1045 if (name[1] != 'z')
1046 {
1047 unsigned int len = strlen (name);
1048
1049 new_name = bfd_alloc (abfd, len + 2);
1050 if (new_name == NULL)
1051 return FALSE;
1052 new_name[0] = '.';
1053 new_name[1] = 'z';
1054 memcpy (new_name + 2, name + 1, len);
1055 }
4a114e3e
L		 1056 break;
1057 case decompress:
1058 if (!bfd_init_section_decompress_status (abfd, newsect))
1059 {
1060 (*_bfd_error_handler)
bc823199 1061 (_("%B: unable to initialize decompress status for section %s"),
4a114e3e
L		 1062 abfd, name);
1063 return FALSE;
1064 }
4e011fb5
AM		 1065 if (name[1] == 'z')
1066 {
1067 unsigned int len = strlen (name);
1068
1069 new_name = bfd_alloc (abfd, len);
1070 if (new_name == NULL)
1071 return FALSE;
1072 new_name[0] = '.';
1073 memcpy (new_name + 1, name + 2, len - 1);
1074 }
4a114e3e
L		 1075 break;
1076 }
4e011fb5
AM		 1077 if (new_name != NULL)
1078 bfd_rename_section (abfd, newsect, new_name);
4a114e3e
L		 1079 }
1080
b34976b6 1081 return TRUE;
252b5132
RH		 1082}
1083
252b5132
RH		 1084const char *const bfd_elf_section_type_names[] = {
1085 "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB",
1086 "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE",
1087 "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM",
1088};
1089
1049f94e 1090/* ELF relocs are against symbols. If we are producing relocatable
252b5132
RH		 1091 output, and the reloc is against an external symbol, and nothing
1092 has given us any additional addend, the resulting reloc will also
1093 be against the same symbol. In such a case, we don't want to
1094 change anything about the way the reloc is handled, since it will
1095 all be done at final link time. Rather than put special case code
1096 into bfd_perform_relocation, all the reloc types use this howto
1097 function. It just short circuits the reloc if producing
1049f94e 1098 relocatable output against an external symbol. */
252b5132 1099
252b5132 1100bfd_reloc_status_type
217aa764
AM		 1101bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1102 arelent *reloc_entry,
1103 asymbol *symbol,
1104 void *data ATTRIBUTE_UNUSED,
1105 asection *input_section,
1106 bfd *output_bfd,
1107 char **error_message ATTRIBUTE_UNUSED)
1108{
1109 if (output_bfd != NULL
252b5132
RH		 1110 && (symbol->flags & BSF_SECTION_SYM) == 0
1111 && (! reloc_entry->howto->partial_inplace
1112 || reloc_entry->addend == 0))
1113 {
1114 reloc_entry->address += input_section->output_offset;
1115 return bfd_reloc_ok;
1116 }
1117
1118 return bfd_reloc_continue;
1119}
1120\f
0ac4564e
L		 1121/* Copy the program header and other data from one object module to
1122 another. */
252b5132 1123
b34976b6 1124bfd_boolean
217aa764 1125_bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
2d502050
L		 1126{
1127 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1128 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 1129 return TRUE;
2d502050
L		 1130
1131 BFD_ASSERT (!elf_flags_init (obfd)
1132 || (elf_elfheader (obfd)->e_flags
1133 == elf_elfheader (ibfd)->e_flags));
1134
0ac4564e 1135 elf_gp (obfd) = elf_gp (ibfd);
2d502050 1136 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
b34976b6 1137 elf_flags_init (obfd) = TRUE;
104d59d1
JM		 1138
1139 /* Copy object attributes. */
1140 _bfd_elf_copy_obj_attributes (ibfd, obfd);
b34976b6 1141 return TRUE;
2d502050
L		 1142}
1143
cedc298e
L		 1144static const char *
1145get_segment_type (unsigned int p_type)
1146{
1147 const char *pt;
1148 switch (p_type)
1149 {
1150 case PT_NULL: pt = "NULL"; break;
1151 case PT_LOAD: pt = "LOAD"; break;
1152 case PT_DYNAMIC: pt = "DYNAMIC"; break;
1153 case PT_INTERP: pt = "INTERP"; break;
1154 case PT_NOTE: pt = "NOTE"; break;
1155 case PT_SHLIB: pt = "SHLIB"; break;
1156 case PT_PHDR: pt = "PHDR"; break;
1157 case PT_TLS: pt = "TLS"; break;
1158 case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break;
2b05f1b7 1159 case PT_GNU_STACK: pt = "STACK"; break;
cedc298e
L		 1160 case PT_GNU_RELRO: pt = "RELRO"; break;
1161 default: pt = NULL; break;
1162 }
1163 return pt;
1164}
1165
f0b79d91
L		 1166/* Print out the program headers. */
1167
b34976b6 1168bfd_boolean
217aa764 1169_bfd_elf_print_private_bfd_data (bfd *abfd, void *farg)
252b5132 1170{
a50b1753 1171 FILE *f = (FILE *) farg;
252b5132
RH		 1172 Elf_Internal_Phdr *p;
1173 asection *s;
1174 bfd_byte *dynbuf = NULL;
1175
1176 p = elf_tdata (abfd)->phdr;
1177 if (p != NULL)
1178 {
1179 unsigned int i, c;
1180
1181 fprintf (f, _("\nProgram Header:\n"));
1182 c = elf_elfheader (abfd)->e_phnum;
1183 for (i = 0; i < c; i++, p++)
1184 {
cedc298e 1185 const char *pt = get_segment_type (p->p_type);
252b5132
RH		 1186 char buf[20];
1187
cedc298e 1188 if (pt == NULL)
252b5132 1189 {
cedc298e
L		 1190 sprintf (buf, "0x%lx", p->p_type);
1191 pt = buf;
252b5132 1192 }
dc810e39 1193 fprintf (f, "%8s off 0x", pt);
60b89a18 1194 bfd_fprintf_vma (abfd, f, p->p_offset);
252b5132 1195 fprintf (f, " vaddr 0x");
60b89a18 1196 bfd_fprintf_vma (abfd, f, p->p_vaddr);
252b5132 1197 fprintf (f, " paddr 0x");
60b89a18 1198 bfd_fprintf_vma (abfd, f, p->p_paddr);
252b5132
RH		 1199 fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align));
1200 fprintf (f, " filesz 0x");
60b89a18 1201 bfd_fprintf_vma (abfd, f, p->p_filesz);
252b5132 1202 fprintf (f, " memsz 0x");
60b89a18 1203 bfd_fprintf_vma (abfd, f, p->p_memsz);
252b5132
RH		 1204 fprintf (f, " flags %c%c%c",
1205 (p->p_flags & PF_R) != 0 ? 'r' : '-',
1206 (p->p_flags & PF_W) != 0 ? 'w' : '-',
1207 (p->p_flags & PF_X) != 0 ? 'x' : '-');
dc810e39
AM		 1208 if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0)
1209 fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X));
252b5132
RH		 1210 fprintf (f, "\n");
1211 }
1212 }
1213
1214 s = bfd_get_section_by_name (abfd, ".dynamic");
1215 if (s != NULL)
1216 {
cb33740c 1217 unsigned int elfsec;
dc810e39 1218 unsigned long shlink;
252b5132
RH		 1219 bfd_byte *extdyn, *extdynend;
1220 size_t extdynsize;
217aa764 1221 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
252b5132
RH		 1222
1223 fprintf (f, _("\nDynamic Section:\n"));
1224
eea6121a 1225 if (!bfd_malloc_and_get_section (abfd, s, &dynbuf))
252b5132
RH		 1226 goto error_return;
1227
1228 elfsec = _bfd_elf_section_from_bfd_section (abfd, s);
cb33740c 1229 if (elfsec == SHN_BAD)
252b5132 1230 goto error_return;
dc810e39 1231 shlink = elf_elfsections (abfd)[elfsec]->sh_link;
252b5132
RH		 1232
1233 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
1234 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
1235
1236 extdyn = dynbuf;
eea6121a 1237 extdynend = extdyn + s->size;
252b5132
RH		 1238 for (; extdyn < extdynend; extdyn += extdynsize)
1239 {
1240 Elf_Internal_Dyn dyn;
ad9563d6 1241 const char *name = "";
252b5132 1242 char ab[20];
b34976b6 1243 bfd_boolean stringp;
ad9563d6 1244 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
252b5132 1245
217aa764 1246 (*swap_dyn_in) (abfd, extdyn, &dyn);
252b5132
RH		 1247
1248 if (dyn.d_tag == DT_NULL)
1249 break;
1250
b34976b6 1251 stringp = FALSE;
252b5132
RH		 1252 switch (dyn.d_tag)
1253 {
1254 default:
ad9563d6
CM		 1255 if (bed->elf_backend_get_target_dtag)
1256 name = (*bed->elf_backend_get_target_dtag) (dyn.d_tag);
1257
1258 if (!strcmp (name, ""))
1259 {
1260 sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag);
1261 name = ab;
1262 }
252b5132
RH		 1263 break;
1264
b34976b6 1265 case DT_NEEDED: name = "NEEDED"; stringp = TRUE; break;
252b5132
RH		 1266 case DT_PLTRELSZ: name = "PLTRELSZ"; break;
1267 case DT_PLTGOT: name = "PLTGOT"; break;
1268 case DT_HASH: name = "HASH"; break;
1269 case DT_STRTAB: name = "STRTAB"; break;
1270 case DT_SYMTAB: name = "SYMTAB"; break;
1271 case DT_RELA: name = "RELA"; break;
1272 case DT_RELASZ: name = "RELASZ"; break;
1273 case DT_RELAENT: name = "RELAENT"; break;
1274 case DT_STRSZ: name = "STRSZ"; break;
1275 case DT_SYMENT: name = "SYMENT"; break;
1276 case DT_INIT: name = "INIT"; break;
1277 case DT_FINI: name = "FINI"; break;
b34976b6
AM		 1278 case DT_SONAME: name = "SONAME"; stringp = TRUE; break;
1279 case DT_RPATH: name = "RPATH"; stringp = TRUE; break;
252b5132
RH		 1280 case DT_SYMBOLIC: name = "SYMBOLIC"; break;
1281 case DT_REL: name = "REL"; break;
1282 case DT_RELSZ: name = "RELSZ"; break;
1283 case DT_RELENT: name = "RELENT"; break;
1284 case DT_PLTREL: name = "PLTREL"; break;
1285 case DT_DEBUG: name = "DEBUG"; break;
1286 case DT_TEXTREL: name = "TEXTREL"; break;
1287 case DT_JMPREL: name = "JMPREL"; break;
94558834
L		 1288 case DT_BIND_NOW: name = "BIND_NOW"; break;
1289 case DT_INIT_ARRAY: name = "INIT_ARRAY"; break;
1290 case DT_FINI_ARRAY: name = "FINI_ARRAY"; break;
1291 case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break;
1292 case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break;
b34976b6 1293 case DT_RUNPATH: name = "RUNPATH"; stringp = TRUE; break;
94558834
L		 1294 case DT_FLAGS: name = "FLAGS"; break;
1295 case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break;
1296 case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break;
d48188b9 1297 case DT_CHECKSUM: name = "CHECKSUM"; break;
94558834
L		 1298 case DT_PLTPADSZ: name = "PLTPADSZ"; break;
1299 case DT_MOVEENT: name = "MOVEENT"; break;
1300 case DT_MOVESZ: name = "MOVESZ"; break;
1301 case DT_FEATURE: name = "FEATURE"; break;
1302 case DT_POSFLAG_1: name = "POSFLAG_1"; break;
1303 case DT_SYMINSZ: name = "SYMINSZ"; break;
1304 case DT_SYMINENT: name = "SYMINENT"; break;
b34976b6
AM		 1305 case DT_CONFIG: name = "CONFIG"; stringp = TRUE; break;
1306 case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = TRUE; break;
1307 case DT_AUDIT: name = "AUDIT"; stringp = TRUE; break;
94558834
L		 1308 case DT_PLTPAD: name = "PLTPAD"; break;
1309 case DT_MOVETAB: name = "MOVETAB"; break;
1310 case DT_SYMINFO: name = "SYMINFO"; break;
1311 case DT_RELACOUNT: name = "RELACOUNT"; break;
1312 case DT_RELCOUNT: name = "RELCOUNT"; break;
1313 case DT_FLAGS_1: name = "FLAGS_1"; break;
252b5132
RH		 1314 case DT_VERSYM: name = "VERSYM"; break;
1315 case DT_VERDEF: name = "VERDEF"; break;
1316 case DT_VERDEFNUM: name = "VERDEFNUM"; break;
1317 case DT_VERNEED: name = "VERNEED"; break;
1318 case DT_VERNEEDNUM: name = "VERNEEDNUM"; break;
b34976b6 1319 case DT_AUXILIARY: name = "AUXILIARY"; stringp = TRUE; break;
94558834 1320 case DT_USED: name = "USED"; break;
b34976b6 1321 case DT_FILTER: name = "FILTER"; stringp = TRUE; break;
fdc90cb4 1322 case DT_GNU_HASH: name = "GNU_HASH"; break;
252b5132
RH		 1323 }
1324
ad9563d6 1325 fprintf (f, " %-20s ", name);
252b5132 1326 if (! stringp)
a1f3c56e
AN		 1327 {
1328 fprintf (f, "0x");
1329 bfd_fprintf_vma (abfd, f, dyn.d_un.d_val);
1330 }
252b5132
RH		 1331 else
1332 {
1333 const char *string;
dc810e39 1334 unsigned int tagv = dyn.d_un.d_val;
252b5132 1335
dc810e39 1336 string = bfd_elf_string_from_elf_section (abfd, shlink, tagv);
252b5132
RH		 1337 if (string == NULL)
1338 goto error_return;
1339 fprintf (f, "%s", string);
1340 }
1341 fprintf (f, "\n");
1342 }
1343
1344 free (dynbuf);
1345 dynbuf = NULL;
1346 }
1347
1348 if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL)
1349 || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL))
1350 {
fc0e6df6 1351 if (! _bfd_elf_slurp_version_tables (abfd, FALSE))
b34976b6 1352 return FALSE;
252b5132
RH		 1353 }
1354
1355 if (elf_dynverdef (abfd) != 0)
1356 {
1357 Elf_Internal_Verdef *t;
1358
1359 fprintf (f, _("\nVersion definitions:\n"));
1360 for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef)
1361 {
1362 fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx,
d0fb9a8d
JJ		 1363 t->vd_flags, t->vd_hash,
1364 t->vd_nodename ? t->vd_nodename : "<corrupt>");
1365 if (t->vd_auxptr != NULL && t->vd_auxptr->vda_nextptr != NULL)
252b5132
RH		 1366 {
1367 Elf_Internal_Verdaux *a;
1368
1369 fprintf (f, "\t");
1370 for (a = t->vd_auxptr->vda_nextptr;
1371 a != NULL;
1372 a = a->vda_nextptr)
d0fb9a8d
JJ		 1373 fprintf (f, "%s ",
1374 a->vda_nodename ? a->vda_nodename : "<corrupt>");
252b5132
RH		 1375 fprintf (f, "\n");
1376 }
1377 }
1378 }
1379
1380 if (elf_dynverref (abfd) != 0)
1381 {
1382 Elf_Internal_Verneed *t;
1383
1384 fprintf (f, _("\nVersion References:\n"));
1385 for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref)
1386 {
1387 Elf_Internal_Vernaux *a;
1388
d0fb9a8d
JJ		 1389 fprintf (f, _(" required from %s:\n"),
1390 t->vn_filename ? t->vn_filename : "<corrupt>");
252b5132
RH		 1391 for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr)
1392 fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash,
d0fb9a8d
JJ		 1393 a->vna_flags, a->vna_other,
1394 a->vna_nodename ? a->vna_nodename : "<corrupt>");
252b5132
RH		 1395 }
1396 }
1397
b34976b6 1398 return TRUE;
252b5132
RH		 1399
1400 error_return:
1401 if (dynbuf != NULL)
1402 free (dynbuf);
b34976b6 1403 return FALSE;
252b5132
RH		 1404}
1405
1406/* Display ELF-specific fields of a symbol. */
1407
1408void
217aa764
AM		 1409bfd_elf_print_symbol (bfd *abfd,
1410 void *filep,
1411 asymbol *symbol,
1412 bfd_print_symbol_type how)
252b5132 1413{
a50b1753 1414 FILE *file = (FILE *) filep;
252b5132
RH		 1415 switch (how)
1416 {
1417 case bfd_print_symbol_name:
1418 fprintf (file, "%s", symbol->name);
1419 break;
1420 case bfd_print_symbol_more:
1421 fprintf (file, "elf ");
60b89a18 1422 bfd_fprintf_vma (abfd, file, symbol->value);
0af1713e 1423 fprintf (file, " %lx", (unsigned long) symbol->flags);
252b5132
RH		 1424 break;
1425 case bfd_print_symbol_all:
1426 {
4e8a9624
AM		 1427 const char *section_name;
1428 const char *name = NULL;
9c5bfbb7 1429 const struct elf_backend_data *bed;
7a13edea 1430 unsigned char st_other;
dbb410c3 1431 bfd_vma val;
c044fabd 1432
252b5132 1433 section_name = symbol->section ? symbol->section->name : "(*none*)";
587ff49e
RH		 1434
1435 bed = get_elf_backend_data (abfd);
1436 if (bed->elf_backend_print_symbol_all)
c044fabd 1437 name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol);
587ff49e
RH		 1438
1439 if (name == NULL)
1440 {
7ee38065 1441 name = symbol->name;
217aa764 1442 bfd_print_symbol_vandf (abfd, file, symbol);
587ff49e
RH		 1443 }
1444
252b5132
RH		 1445 fprintf (file, " %s\t", section_name);
1446 /* Print the "other" value for a symbol. For common symbols,
1447 we've already printed the size; now print the alignment.
1448 For other symbols, we have no specified alignment, and
1449 we've printed the address; now print the size. */
dcf6c779 1450 if (symbol->section && bfd_is_com_section (symbol->section))
dbb410c3
AM		 1451 val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value;
1452 else
1453 val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size;
1454 bfd_fprintf_vma (abfd, file, val);
252b5132
RH		 1455
1456 /* If we have version information, print it. */
1457 if (elf_tdata (abfd)->dynversym_section != 0
1458 && (elf_tdata (abfd)->dynverdef_section != 0
1459 || elf_tdata (abfd)->dynverref_section != 0))
1460 {
1461 unsigned int vernum;
1462 const char *version_string;
1463
1464 vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION;
1465
1466 if (vernum == 0)
1467 version_string = "";
1468 else if (vernum == 1)
1469 version_string = "Base";
1470 else if (vernum <= elf_tdata (abfd)->cverdefs)
1471 version_string =
1472 elf_tdata (abfd)->verdef[vernum - 1].vd_nodename;
1473 else
1474 {
1475 Elf_Internal_Verneed *t;
1476
1477 version_string = "";
1478 for (t = elf_tdata (abfd)->verref;
1479 t != NULL;
1480 t = t->vn_nextref)
1481 {
1482 Elf_Internal_Vernaux *a;
1483
1484 for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr)
1485 {
1486 if (a->vna_other == vernum)
1487 {
1488 version_string = a->vna_nodename;
1489 break;
1490 }
1491 }
1492 }
1493 }
1494
1495 if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0)
1496 fprintf (file, " %-11s", version_string);
1497 else
1498 {
1499 int i;
1500
1501 fprintf (file, " (%s)", version_string);
1502 for (i = 10 - strlen (version_string); i > 0; --i)
1503 putc (' ', file);
1504 }
1505 }
1506
1507 /* If the st_other field is not zero, print it. */
7a13edea 1508 st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other;
c044fabd 1509
7a13edea
NC		 1510 switch (st_other)
1511 {
1512 case 0: break;
1513 case STV_INTERNAL: fprintf (file, " .internal"); break;
1514 case STV_HIDDEN: fprintf (file, " .hidden"); break;
1515 case STV_PROTECTED: fprintf (file, " .protected"); break;
1516 default:
1517 /* Some other non-defined flags are also present, so print
1518 everything hex. */
1519 fprintf (file, " 0x%02x", (unsigned int) st_other);
1520 }
252b5132 1521
587ff49e 1522 fprintf (file, " %s", name);
252b5132
RH		 1523 }
1524 break;
1525 }
1526}
252b5132 1527
252b5132
RH		 1528/* Allocate an ELF string table--force the first byte to be zero. */
1529
1530struct bfd_strtab_hash *
217aa764 1531_bfd_elf_stringtab_init (void)
252b5132
RH		 1532{
1533 struct bfd_strtab_hash *ret;
1534
1535 ret = _bfd_stringtab_init ();
1536 if (ret != NULL)
1537 {
1538 bfd_size_type loc;
1539
b34976b6 1540 loc = _bfd_stringtab_add (ret, "", TRUE, FALSE);
252b5132
RH		 1541 BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1);
1542 if (loc == (bfd_size_type) -1)
1543 {
1544 _bfd_stringtab_free (ret);
1545 ret = NULL;
1546 }
1547 }
1548 return ret;
1549}
1550\f
1551/* ELF .o/exec file reading */
1552
c044fabd 1553/* Create a new bfd section from an ELF section header. */
252b5132 1554
b34976b6 1555bfd_boolean
217aa764 1556bfd_section_from_shdr (bfd *abfd, unsigned int shindex)
252b5132 1557{
4fbb74a6
AM		 1558 Elf_Internal_Shdr *hdr;
1559 Elf_Internal_Ehdr *ehdr;
1560 const struct elf_backend_data *bed;
90937f86 1561 const char *name;
252b5132 1562
4fbb74a6
AM		 1563 if (shindex >= elf_numsections (abfd))
1564 return FALSE;
1565
1566 hdr = elf_elfsections (abfd)[shindex];
1567 ehdr = elf_elfheader (abfd);
1568 name = bfd_elf_string_from_elf_section (abfd, ehdr->e_shstrndx,
1b3a8575 1569 hdr->sh_name);
933d961a
JJ		 1570 if (name == NULL)
1571 return FALSE;
252b5132 1572
4fbb74a6 1573 bed = get_elf_backend_data (abfd);
252b5132
RH		 1574 switch (hdr->sh_type)
1575 {
1576 case SHT_NULL:
1577 /* Inactive section. Throw it away. */
b34976b6 1578 return TRUE;
252b5132
RH		 1579
1580 case SHT_PROGBITS: /* Normal section with contents. */
252b5132
RH		 1581 case SHT_NOBITS: /* .bss section. */
1582 case SHT_HASH: /* .hash section. */
1583 case SHT_NOTE: /* .note section. */
25e27870
L		 1584 case SHT_INIT_ARRAY: /* .init_array section. */
1585 case SHT_FINI_ARRAY: /* .fini_array section. */
1586 case SHT_PREINIT_ARRAY: /* .preinit_array section. */
7f1204bb 1587 case SHT_GNU_LIBLIST: /* .gnu.liblist section. */
fdc90cb4 1588 case SHT_GNU_HASH: /* .gnu.hash section. */
6dc132d9 1589 return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
252b5132 1590
797fc050 1591 case SHT_DYNAMIC: /* Dynamic linking information. */
6dc132d9 1592 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
b34976b6 1593 return FALSE;
cfcac11d
NC		 1594 if (hdr->sh_link > elf_numsections (abfd))
1595 {
caa83f8b 1596 /* PR 10478: Accept Solaris binaries with a sh_link
cfcac11d
NC		 1597 field set to SHN_BEFORE or SHN_AFTER. */
1598 switch (bfd_get_arch (abfd))
1599 {
caa83f8b 1600 case bfd_arch_i386:
cfcac11d
NC		 1601 case bfd_arch_sparc:
1602 if (hdr->sh_link == (SHN_LORESERVE & 0xffff) /* SHN_BEFORE */
1603 || hdr->sh_link == ((SHN_LORESERVE + 1) & 0xffff) /* SHN_AFTER */)
1604 break;
1605 /* Otherwise fall through. */
1606 default:
1607 return FALSE;
1608 }
1609 }
1610 else if (elf_elfsections (abfd)[hdr->sh_link] == NULL)
8e0ed13f 1611 return FALSE;
cfcac11d 1612 else if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB)
797fc050
AM		 1613 {
1614 Elf_Internal_Shdr *dynsymhdr;
1615
1616 /* The shared libraries distributed with hpux11 have a bogus
1617 sh_link field for the ".dynamic" section. Find the
1618 string table for the ".dynsym" section instead. */
1619 if (elf_dynsymtab (abfd) != 0)
1620 {
1621 dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)];
1622 hdr->sh_link = dynsymhdr->sh_link;
1623 }
1624 else
1625 {
1626 unsigned int i, num_sec;
1627
1628 num_sec = elf_numsections (abfd);
1629 for (i = 1; i < num_sec; i++)
1630 {
1631 dynsymhdr = elf_elfsections (abfd)[i];
1632 if (dynsymhdr->sh_type == SHT_DYNSYM)
1633 {
1634 hdr->sh_link = dynsymhdr->sh_link;
1635 break;
1636 }
1637 }
1638 }
1639 }
1640 break;
1641
252b5132
RH		 1642 case SHT_SYMTAB: /* A symbol table */
1643 if (elf_onesymtab (abfd) == shindex)
b34976b6 1644 return TRUE;
252b5132 1645
a50b2160
JJ		 1646 if (hdr->sh_entsize != bed->s->sizeof_sym)
1647 return FALSE;
3337c1e5 1648 if (hdr->sh_info * hdr->sh_entsize > hdr->sh_size)
eee3b786
AM		 1649 {
1650 if (hdr->sh_size != 0)
1651 return FALSE;
1652 /* Some assemblers erroneously set sh_info to one with a
1653 zero sh_size. ld sees this as a global symbol count
1654 of (unsigned) -1. Fix it here. */
1655 hdr->sh_info = 0;
1656 return TRUE;
1657 }
252b5132
RH		 1658 BFD_ASSERT (elf_onesymtab (abfd) == 0);
1659 elf_onesymtab (abfd) = shindex;
1660 elf_tdata (abfd)->symtab_hdr = *hdr;
1661 elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr;
1662 abfd->flags |= HAS_SYMS;
1663
1664 /* Sometimes a shared object will map in the symbol table. If
08a40648
AM		 1665 SHF_ALLOC is set, and this is a shared object, then we also
1666 treat this section as a BFD section. We can not base the
1667 decision purely on SHF_ALLOC, because that flag is sometimes
1668 set in a relocatable object file, which would confuse the
1669 linker. */
252b5132
RH		 1670 if ((hdr->sh_flags & SHF_ALLOC) != 0
1671 && (abfd->flags & DYNAMIC) != 0
6dc132d9
L		 1672 && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name,
1673 shindex))
b34976b6 1674 return FALSE;
252b5132 1675
1b3a8575
AM		 1676 /* Go looking for SHT_SYMTAB_SHNDX too, since if there is one we
1677 can't read symbols without that section loaded as well. It
1678 is most likely specified by the next section header. */
1679 if (elf_elfsections (abfd)[elf_symtab_shndx (abfd)]->sh_link != shindex)
1680 {
1681 unsigned int i, num_sec;
1682
1683 num_sec = elf_numsections (abfd);
1684 for (i = shindex + 1; i < num_sec; i++)
1685 {
1686 Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i];
1687 if (hdr2->sh_type == SHT_SYMTAB_SHNDX
1688 && hdr2->sh_link == shindex)
1689 break;
1690 }
1691 if (i == num_sec)
1692 for (i = 1; i < shindex; i++)
1693 {
1694 Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i];
1695 if (hdr2->sh_type == SHT_SYMTAB_SHNDX
1696 && hdr2->sh_link == shindex)
1697 break;
1698 }
1699 if (i != shindex)
1700 return bfd_section_from_shdr (abfd, i);
1701 }
b34976b6 1702 return TRUE;
252b5132
RH		 1703
1704 case SHT_DYNSYM: /* A dynamic symbol table */
1705 if (elf_dynsymtab (abfd) == shindex)
b34976b6 1706 return TRUE;
252b5132 1707
a50b2160
JJ		 1708 if (hdr->sh_entsize != bed->s->sizeof_sym)
1709 return FALSE;
eee3b786
AM		 1710 if (hdr->sh_info * hdr->sh_entsize > hdr->sh_size)
1711 {
1712 if (hdr->sh_size != 0)
1713 return FALSE;
1714 /* Some linkers erroneously set sh_info to one with a
1715 zero sh_size. ld sees this as a global symbol count
1716 of (unsigned) -1. Fix it here. */
1717 hdr->sh_info = 0;
1718 return TRUE;
1719 }
252b5132
RH		 1720 BFD_ASSERT (elf_dynsymtab (abfd) == 0);
1721 elf_dynsymtab (abfd) = shindex;
1722 elf_tdata (abfd)->dynsymtab_hdr = *hdr;
1723 elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr;
1724 abfd->flags |= HAS_SYMS;
1725
1726 /* Besides being a symbol table, we also treat this as a regular
1727 section, so that objcopy can handle it. */
6dc132d9 1728 return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
252b5132 1729
9ad5cbcf
AM		 1730 case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */
1731 if (elf_symtab_shndx (abfd) == shindex)
b34976b6 1732 return TRUE;
9ad5cbcf 1733
1b3a8575 1734 BFD_ASSERT (elf_symtab_shndx (abfd) == 0);
9ad5cbcf
AM		 1735 elf_symtab_shndx (abfd) = shindex;
1736 elf_tdata (abfd)->symtab_shndx_hdr = *hdr;
1737 elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr;
b34976b6 1738 return TRUE;
9ad5cbcf 1739
252b5132
RH		 1740 case SHT_STRTAB: /* A string table */
1741 if (hdr->bfd_section != NULL)
b34976b6 1742 return TRUE;
252b5132
RH		 1743 if (ehdr->e_shstrndx == shindex)
1744 {
1745 elf_tdata (abfd)->shstrtab_hdr = *hdr;
1746 elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr;
b34976b6 1747 return TRUE;
252b5132 1748 }
1b3a8575
AM		 1749 if (elf_elfsections (abfd)[elf_onesymtab (abfd)]->sh_link == shindex)
1750 {
1751 symtab_strtab:
1752 elf_tdata (abfd)->strtab_hdr = *hdr;
1753 elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->strtab_hdr;
1754 return TRUE;
1755 }
1756 if (elf_elfsections (abfd)[elf_dynsymtab (abfd)]->sh_link == shindex)
1757 {
1758 dynsymtab_strtab:
1759 elf_tdata (abfd)->dynstrtab_hdr = *hdr;
1760 hdr = &elf_tdata (abfd)->dynstrtab_hdr;
1761 elf_elfsections (abfd)[shindex] = hdr;
1762 /* We also treat this as a regular section, so that objcopy
1763 can handle it. */
6dc132d9
L		 1764 return _bfd_elf_make_section_from_shdr (abfd, hdr, name,
1765 shindex);
1b3a8575 1766 }
252b5132 1767
1b3a8575
AM		 1768 /* If the string table isn't one of the above, then treat it as a
1769 regular section. We need to scan all the headers to be sure,
1770 just in case this strtab section appeared before the above. */
1771 if (elf_onesymtab (abfd) == 0 || elf_dynsymtab (abfd) == 0)
1772 {
1773 unsigned int i, num_sec;
252b5132 1774
1b3a8575
AM		 1775 num_sec = elf_numsections (abfd);
1776 for (i = 1; i < num_sec; i++)
1777 {
1778 Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i];
1779 if (hdr2->sh_link == shindex)
1780 {
933d961a
JJ		 1781 /* Prevent endless recursion on broken objects. */
1782 if (i == shindex)
1783 return FALSE;
1b3a8575
AM		 1784 if (! bfd_section_from_shdr (abfd, i))
1785 return FALSE;
1786 if (elf_onesymtab (abfd) == i)
1787 goto symtab_strtab;
1788 if (elf_dynsymtab (abfd) == i)
1789 goto dynsymtab_strtab;
1790 }
1791 }
1792 }
6dc132d9 1793 return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
252b5132
RH		 1794
1795 case SHT_REL:
1796 case SHT_RELA:
1797 /* *These* do a lot of work -- but build no sections! */
1798 {
1799 asection *target_sect;
d4730f92 1800 Elf_Internal_Shdr *hdr2, **p_hdr;
9ad5cbcf 1801 unsigned int num_sec = elf_numsections (abfd);
d4730f92
BS		 1802 struct bfd_elf_section_data *esdt;
1803 bfd_size_type amt;
252b5132 1804
aa2ca951
JJ		 1805 if (hdr->sh_entsize
1806 != (bfd_size_type) (hdr->sh_type == SHT_REL
a50b2160
JJ		 1807 ? bed->s->sizeof_rel : bed->s->sizeof_rela))
1808 return FALSE;
1809
03ae5f59 1810 /* Check for a bogus link to avoid crashing. */
4fbb74a6 1811 if (hdr->sh_link >= num_sec)
03ae5f59
ILT		 1812 {
1813 ((*_bfd_error_handler)
d003868e
AM		 1814 (_("%B: invalid link %lu for reloc section %s (index %u)"),
1815 abfd, hdr->sh_link, name, shindex));
6dc132d9
L		 1816 return _bfd_elf_make_section_from_shdr (abfd, hdr, name,
1817 shindex);
03ae5f59
ILT		 1818 }
1819
252b5132
RH		 1820 /* For some incomprehensible reason Oracle distributes
1821 libraries for Solaris in which some of the objects have
1822 bogus sh_link fields. It would be nice if we could just
1823 reject them, but, unfortunately, some people need to use
1824 them. We scan through the section headers; if we find only
1825 one suitable symbol table, we clobber the sh_link to point
83b89087
L		 1826 to it. I hope this doesn't break anything.
1827
1828 Don't do it on executable nor shared library. */
1829 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0
1830 && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB
252b5132
RH		 1831 && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM)
1832 {
9ad5cbcf 1833 unsigned int scan;
252b5132
RH		 1834 int found;
1835
1836 found = 0;
9ad5cbcf 1837 for (scan = 1; scan < num_sec; scan++)
252b5132
RH		 1838 {
1839 if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB
1840 || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM)
1841 {
1842 if (found != 0)
1843 {
1844 found = 0;
1845 break;
1846 }
1847 found = scan;
1848 }
1849 }
1850 if (found != 0)
1851 hdr->sh_link = found;
1852 }
1853
1854 /* Get the symbol table. */
1b3a8575
AM		 1855 if ((elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB
1856 || elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_DYNSYM)
252b5132 1857 && ! bfd_section_from_shdr (abfd, hdr->sh_link))
b34976b6 1858 return FALSE;
252b5132
RH		 1859
1860 /* If this reloc section does not use the main symbol table we
1861 don't treat it as a reloc section. BFD can't adequately
1862 represent such a section, so at least for now, we don't
c044fabd 1863 try. We just present it as a normal section. We also
60bcf0fa 1864 can't use it as a reloc section if it points to the null
83b89087
L		 1865 section, an invalid section, another reloc section, or its
1866 sh_link points to the null section. */
185ef66d 1867 if (hdr->sh_link != elf_onesymtab (abfd)
83b89087 1868 || hdr->sh_link == SHN_UNDEF
185ef66d 1869 || hdr->sh_info == SHN_UNDEF
185ef66d
AM		 1870 || hdr->sh_info >= num_sec
1871 || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_REL
1872 || elf_elfsections (abfd)[hdr->sh_info]->sh_type == SHT_RELA)
6dc132d9
L		 1873 return _bfd_elf_make_section_from_shdr (abfd, hdr, name,
1874 shindex);
252b5132
RH		 1875
1876 if (! bfd_section_from_shdr (abfd, hdr->sh_info))
b34976b6 1877 return FALSE;
252b5132
RH		 1878 target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info);
1879 if (target_sect == NULL)
b34976b6 1880 return FALSE;
252b5132 1881
d4730f92
BS		 1882 esdt = elf_section_data (target_sect);
1883 if (hdr->sh_type == SHT_RELA)
1884 p_hdr = &esdt->rela.hdr;
252b5132 1885 else
d4730f92
BS		 1886 p_hdr = &esdt->rel.hdr;
1887
1888 BFD_ASSERT (*p_hdr == NULL);
1889 amt = sizeof (*hdr2);
1890 hdr2 = (Elf_Internal_Shdr *) bfd_alloc (abfd, amt);
1891 if (hdr2 == NULL)
1892 return FALSE;
252b5132 1893 *hdr2 = *hdr;
d4730f92 1894 *p_hdr = hdr2;
252b5132 1895 elf_elfsections (abfd)[shindex] = hdr2;
d9bc7a44 1896 target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr);
252b5132
RH		 1897 target_sect->flags |= SEC_RELOC;
1898 target_sect->relocation = NULL;
1899 target_sect->rel_filepos = hdr->sh_offset;
bf572ba0
MM		 1900 /* In the section to which the relocations apply, mark whether
1901 its relocations are of the REL or RELA variety. */
72730e0c 1902 if (hdr->sh_size != 0)
d4730f92
BS		 1903 {
1904 if (hdr->sh_type == SHT_RELA)
1905 target_sect->use_rela_p = 1;
1906 }
252b5132 1907 abfd->flags |= HAS_RELOC;
b34976b6 1908 return TRUE;
252b5132 1909 }
252b5132
RH		 1910
1911 case SHT_GNU_verdef:
1912 elf_dynverdef (abfd) = shindex;
1913 elf_tdata (abfd)->dynverdef_hdr = *hdr;
6dc132d9 1914 return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
252b5132
RH		 1915
1916 case SHT_GNU_versym:
a50b2160
JJ		 1917 if (hdr->sh_entsize != sizeof (Elf_External_Versym))
1918 return FALSE;
252b5132
RH		 1919 elf_dynversym (abfd) = shindex;
1920 elf_tdata (abfd)->dynversym_hdr = *hdr;
6dc132d9 1921 return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
252b5132
RH		 1922
1923 case SHT_GNU_verneed:
1924 elf_dynverref (abfd) = shindex;
1925 elf_tdata (abfd)->dynverref_hdr = *hdr;
6dc132d9 1926 return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
252b5132
RH		 1927
1928 case SHT_SHLIB:
b34976b6 1929 return TRUE;
252b5132 1930
dbb410c3 1931 case SHT_GROUP:
1783205a 1932 if (! IS_VALID_GROUP_SECTION_HEADER (hdr))
a50b2160 1933 return FALSE;
6dc132d9 1934 if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
b34976b6 1935 return FALSE;
dbb410c3
AM		 1936 if (hdr->contents != NULL)
1937 {
1938 Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents;
1783205a 1939 unsigned int n_elt = hdr->sh_size / GRP_ENTRY_SIZE;
dbb410c3
AM		 1940 asection *s;
1941
b885599b
AM		 1942 if (idx->flags & GRP_COMDAT)
1943 hdr->bfd_section->flags
1944 |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
1945
45c5e9ed
L		 1946 /* We try to keep the same section order as it comes in. */
1947 idx += n_elt;
dbb410c3 1948 while (--n_elt != 0)
1783205a
NC		 1949 {
1950 --idx;
1951
1952 if (idx->shdr != NULL
1953 && (s = idx->shdr->bfd_section) != NULL
1954 && elf_next_in_group (s) != NULL)
1955 {
1956 elf_next_in_group (hdr->bfd_section) = s;
1957 break;
1958 }
1959 }
dbb410c3
AM		 1960 }
1961 break;
1962
252b5132 1963 default:
104d59d1
JM		 1964 /* Possibly an attributes section. */
1965 if (hdr->sh_type == SHT_GNU_ATTRIBUTES
1966 || hdr->sh_type == bed->obj_attrs_section_type)
1967 {
1968 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1969 return FALSE;
1970 _bfd_elf_parse_attributes (abfd, hdr);
1971 return TRUE;
1972 }
1973
252b5132 1974 /* Check for any processor-specific section types. */
3eb70a79
L		 1975 if (bed->elf_backend_section_from_shdr (abfd, hdr, name, shindex))
1976 return TRUE;
1977
1978 if (hdr->sh_type >= SHT_LOUSER && hdr->sh_type <= SHT_HIUSER)
1979 {
1980 if ((hdr->sh_flags & SHF_ALLOC) != 0)
1981 /* FIXME: How to properly handle allocated section reserved
1982 for applications? */
1983 (*_bfd_error_handler)
1984 (_("%B: don't know how to handle allocated, application "
1985 "specific section `%s' [0x%8x]"),
1986 abfd, name, hdr->sh_type);
1987 else
1988 /* Allow sections reserved for applications. */
1989 return _bfd_elf_make_section_from_shdr (abfd, hdr, name,
1990 shindex);
1991 }
1992 else if (hdr->sh_type >= SHT_LOPROC
1993 && hdr->sh_type <= SHT_HIPROC)
1994 /* FIXME: We should handle this section. */
1995 (*_bfd_error_handler)
1996 (_("%B: don't know how to handle processor specific section "
1997 "`%s' [0x%8x]"),
1998 abfd, name, hdr->sh_type);
1999 else if (hdr->sh_type >= SHT_LOOS && hdr->sh_type <= SHT_HIOS)
ff15b240
NC		 2000 {
2001 /* Unrecognised OS-specific sections. */
2002 if ((hdr->sh_flags & SHF_OS_NONCONFORMING) != 0)
2003 /* SHF_OS_NONCONFORMING indicates that special knowledge is
08a40648 2004 required to correctly process the section and the file should
ff15b240
NC		 2005 be rejected with an error message. */
2006 (*_bfd_error_handler)
2007 (_("%B: don't know how to handle OS specific section "
2008 "`%s' [0x%8x]"),
2009 abfd, name, hdr->sh_type);
2010 else
2011 /* Otherwise it should be processed. */
2012 return _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex);
2013 }
3eb70a79
L		 2014 else
2015 /* FIXME: We should handle this section. */
2016 (*_bfd_error_handler)
2017 (_("%B: don't know how to handle section `%s' [0x%8x]"),
2018 abfd, name, hdr->sh_type);
2019
2020 return FALSE;
252b5132
RH		 2021 }
2022
b34976b6 2023 return TRUE;
252b5132
RH		 2024}
2025
87d72d41 2026/* Return the local symbol specified by ABFD, R_SYMNDX. */
ec338859 2027
87d72d41
AM		 2028Elf_Internal_Sym *
2029bfd_sym_from_r_symndx (struct sym_cache *cache,
2030 bfd *abfd,
2031 unsigned long r_symndx)
ec338859 2032{
ec338859
AM		 2033 unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE;
2034
a5d1b3b5
AM		 2035 if (cache->abfd != abfd || cache->indx[ent] != r_symndx)
2036 {
2037 Elf_Internal_Shdr *symtab_hdr;
2038 unsigned char esym[sizeof (Elf64_External_Sym)];
2039 Elf_External_Sym_Shndx eshndx;
ec338859 2040
a5d1b3b5
AM		 2041 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2042 if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx,
87d72d41 2043 &cache->sym[ent], esym, &eshndx) == NULL)
a5d1b3b5 2044 return NULL;
9ad5cbcf 2045
a5d1b3b5
AM		 2046 if (cache->abfd != abfd)
2047 {
2048 memset (cache->indx, -1, sizeof (cache->indx));
2049 cache->abfd = abfd;
2050 }
2051 cache->indx[ent] = r_symndx;
ec338859 2052 }
a5d1b3b5 2053
87d72d41 2054 return &cache->sym[ent];
ec338859
AM		 2055}
2056
252b5132
RH		 2057/* Given an ELF section number, retrieve the corresponding BFD
2058 section. */
2059
2060asection *
91d6fa6a 2061bfd_section_from_elf_index (bfd *abfd, unsigned int sec_index)
252b5132 2062{
91d6fa6a 2063 if (sec_index >= elf_numsections (abfd))
252b5132 2064 return NULL;
91d6fa6a 2065 return elf_elfsections (abfd)[sec_index]->bfd_section;
252b5132
RH		 2066}
2067
b35d266b 2068static const struct bfd_elf_special_section special_sections_b[] =
2f89ff8d 2069{
0112cd26
NC		 2070 { STRING_COMMA_LEN (".bss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
2071 { NULL, 0, 0, 0, 0 }
7f4d3958
L		 2072};
2073
b35d266b 2074static const struct bfd_elf_special_section special_sections_c[] =
7f4d3958 2075{
0112cd26
NC		 2076 { STRING_COMMA_LEN (".comment"), 0, SHT_PROGBITS, 0 },
2077 { NULL, 0, 0, 0, 0 }
7f4d3958
L		 2078};
2079
b35d266b 2080static const struct bfd_elf_special_section special_sections_d[] =
7f4d3958 2081{
0112cd26
NC		 2082 { STRING_COMMA_LEN (".data"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2083 { STRING_COMMA_LEN (".data1"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2084 { STRING_COMMA_LEN (".debug"), 0, SHT_PROGBITS, 0 },
2085 { STRING_COMMA_LEN (".debug_line"), 0, SHT_PROGBITS, 0 },
2086 { STRING_COMMA_LEN (".debug_info"), 0, SHT_PROGBITS, 0 },
2087 { STRING_COMMA_LEN (".debug_abbrev"), 0, SHT_PROGBITS, 0 },
2088 { STRING_COMMA_LEN (".debug_aranges"), 0, SHT_PROGBITS, 0 },
2089 { STRING_COMMA_LEN (".dynamic"), 0, SHT_DYNAMIC, SHF_ALLOC },
2090 { STRING_COMMA_LEN (".dynstr"), 0, SHT_STRTAB, SHF_ALLOC },
2091 { STRING_COMMA_LEN (".dynsym"), 0, SHT_DYNSYM, SHF_ALLOC },
2092 { NULL, 0, 0, 0, 0 }
7f4d3958
L		 2093};
2094
b35d266b 2095static const struct bfd_elf_special_section special_sections_f[] =
7f4d3958 2096{
0112cd26
NC		 2097 { STRING_COMMA_LEN (".fini"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
2098 { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE },
2099 { NULL, 0, 0, 0, 0 }
7f4d3958
L		 2100};
2101
b35d266b 2102static const struct bfd_elf_special_section special_sections_g[] =
7f4d3958 2103{
0112cd26 2104 { STRING_COMMA_LEN (".gnu.linkonce.b"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
68efed41 2105 { STRING_COMMA_LEN (".gnu.lto_"), -1, SHT_PROGBITS, SHF_EXCLUDE },
0112cd26
NC		 2106 { STRING_COMMA_LEN (".got"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2107 { STRING_COMMA_LEN (".gnu.version"), 0, SHT_GNU_versym, 0 },
2108 { STRING_COMMA_LEN (".gnu.version_d"), 0, SHT_GNU_verdef, 0 },
2109 { STRING_COMMA_LEN (".gnu.version_r"), 0, SHT_GNU_verneed, 0 },
2110 { STRING_COMMA_LEN (".gnu.liblist"), 0, SHT_GNU_LIBLIST, SHF_ALLOC },
2111 { STRING_COMMA_LEN (".gnu.conflict"), 0, SHT_RELA, SHF_ALLOC },
2112 { STRING_COMMA_LEN (".gnu.hash"), 0, SHT_GNU_HASH, SHF_ALLOC },
2113 { NULL, 0, 0, 0, 0 }
7f4d3958
L		 2114};
2115
b35d266b 2116static const struct bfd_elf_special_section special_sections_h[] =
7f4d3958 2117{
0112cd26
NC		 2118 { STRING_COMMA_LEN (".hash"), 0, SHT_HASH, SHF_ALLOC },
2119 { NULL, 0, 0, 0, 0 }
7f4d3958
L		 2120};
2121
b35d266b 2122static const struct bfd_elf_special_section special_sections_i[] =
7f4d3958 2123{
0112cd26
NC		 2124 { STRING_COMMA_LEN (".init"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
2125 { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE },
2126 { STRING_COMMA_LEN (".interp"), 0, SHT_PROGBITS, 0 },
2127 { NULL, 0, 0, 0, 0 }
7f4d3958
L		 2128};
2129
b35d266b 2130static const struct bfd_elf_special_section special_sections_l[] =
7f4d3958 2131{
0112cd26
NC		 2132 { STRING_COMMA_LEN (".line"), 0, SHT_PROGBITS, 0 },
2133 { NULL, 0, 0, 0, 0 }
7f4d3958
L		 2134};
2135
b35d266b 2136static const struct bfd_elf_special_section special_sections_n[] =
7f4d3958 2137{
0112cd26
NC		 2138 { STRING_COMMA_LEN (".note.GNU-stack"), 0, SHT_PROGBITS, 0 },
2139 { STRING_COMMA_LEN (".note"), -1, SHT_NOTE, 0 },
2140 { NULL, 0, 0, 0, 0 }
7f4d3958
L		 2141};
2142
b35d266b 2143static const struct bfd_elf_special_section special_sections_p[] =
7f4d3958 2144{
0112cd26
NC		 2145 { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE },
2146 { STRING_COMMA_LEN (".plt"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
2147 { NULL, 0, 0, 0, 0 }
7f4d3958
L		 2148};
2149
b35d266b 2150static const struct bfd_elf_special_section special_sections_r[] =
7f4d3958 2151{
0112cd26
NC		 2152 { STRING_COMMA_LEN (".rodata"), -2, SHT_PROGBITS, SHF_ALLOC },
2153 { STRING_COMMA_LEN (".rodata1"), 0, SHT_PROGBITS, SHF_ALLOC },
2154 { STRING_COMMA_LEN (".rela"), -1, SHT_RELA, 0 },
2155 { STRING_COMMA_LEN (".rel"), -1, SHT_REL, 0 },
2156 { NULL, 0, 0, 0, 0 }
7f4d3958
L		 2157};
2158
b35d266b 2159static const struct bfd_elf_special_section special_sections_s[] =
7f4d3958 2160{
0112cd26
NC		 2161 { STRING_COMMA_LEN (".shstrtab"), 0, SHT_STRTAB, 0 },
2162 { STRING_COMMA_LEN (".strtab"), 0, SHT_STRTAB, 0 },
2163 { STRING_COMMA_LEN (".symtab"), 0, SHT_SYMTAB, 0 },
60ff4dc4
HPN		 2164 /* See struct bfd_elf_special_section declaration for the semantics of
2165 this special case where .prefix_length != strlen (.prefix). */
2166 { ".stabstr", 5, 3, SHT_STRTAB, 0 },
0112cd26 2167 { NULL, 0, 0, 0, 0 }
2f89ff8d
L		 2168};
2169
b35d266b 2170static const struct bfd_elf_special_section special_sections_t[] =
7f4d3958 2171{
0112cd26
NC		 2172 { STRING_COMMA_LEN (".text"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
2173 { STRING_COMMA_LEN (".tbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS },
2174 { STRING_COMMA_LEN (".tdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS },
2175 { NULL, 0, 0, 0, 0 }
7f4d3958
L		 2176};
2177
1b315056
CS		 2178static const struct bfd_elf_special_section special_sections_z[] =
2179{
2180 { STRING_COMMA_LEN (".zdebug_line"), 0, SHT_PROGBITS, 0 },
2181 { STRING_COMMA_LEN (".zdebug_info"), 0, SHT_PROGBITS, 0 },
2182 { STRING_COMMA_LEN (".zdebug_abbrev"), 0, SHT_PROGBITS, 0 },
2183 { STRING_COMMA_LEN (".zdebug_aranges"), 0, SHT_PROGBITS, 0 },
2184 { NULL, 0, 0, 0, 0 }
2185};
2186
e4c93b56 2187static const struct bfd_elf_special_section * const special_sections[] =
7f4d3958 2188{
7f4d3958 2189 special_sections_b, /* 'b' */
98ece1b3 2190 special_sections_c, /* 'c' */
7f4d3958
L		 2191 special_sections_d, /* 'd' */
2192 NULL, /* 'e' */
2193 special_sections_f, /* 'f' */
2194 special_sections_g, /* 'g' */
2195 special_sections_h, /* 'h' */
2196 special_sections_i, /* 'i' */
2197 NULL, /* 'j' */
2198 NULL, /* 'k' */
2199 special_sections_l, /* 'l' */
2200 NULL, /* 'm' */
2201 special_sections_n, /* 'n' */
2202 NULL, /* 'o' */
2203 special_sections_p, /* 'p' */
2204 NULL, /* 'q' */
2205 special_sections_r, /* 'r' */
2206 special_sections_s, /* 's' */
2207 special_sections_t, /* 't' */
1b315056
CS		 2208 NULL, /* 'u' */
2209 NULL, /* 'v' */
2210 NULL, /* 'w' */
2211 NULL, /* 'x' */
2212 NULL, /* 'y' */
2213 special_sections_z /* 'z' */
7f4d3958
L		 2214};
2215
551b43fd
AM		 2216const struct bfd_elf_special_section *
2217_bfd_elf_get_special_section (const char *name,
2218 const struct bfd_elf_special_section *spec,
2219 unsigned int rela)
2f89ff8d
L		 2220{
2221 int i;
7f4d3958 2222 int len;
7f4d3958 2223
551b43fd 2224 len = strlen (name);
7f4d3958 2225
551b43fd 2226 for (i = 0; spec[i].prefix != NULL; i++)
7dcb9820
AM		 2227 {
2228 int suffix_len;
551b43fd 2229 int prefix_len = spec[i].prefix_length;
7dcb9820
AM		 2230
2231 if (len < prefix_len)
2232 continue;
551b43fd 2233 if (memcmp (name, spec[i].prefix, prefix_len) != 0)
7dcb9820
AM		 2234 continue;
2235
551b43fd 2236 suffix_len = spec[i].suffix_length;
7dcb9820
AM		 2237 if (suffix_len <= 0)
2238 {
2239 if (name[prefix_len] != 0)
2240 {
2241 if (suffix_len == 0)
2242 continue;
2243 if (name[prefix_len] != '.'
2244 && (suffix_len == -2
551b43fd 2245 || (rela && spec[i].type == SHT_REL)))
7dcb9820
AM		 2246 continue;
2247 }
2248 }
2249 else
2250 {
2251 if (len < prefix_len + suffix_len)
2252 continue;
2253 if (memcmp (name + len - suffix_len,
551b43fd 2254 spec[i].prefix + prefix_len,
7dcb9820
AM		 2255 suffix_len) != 0)
2256 continue;
2257 }
551b43fd 2258 return &spec[i];
7dcb9820 2259 }
2f89ff8d
L		 2260
2261 return NULL;
2262}
2263
7dcb9820 2264const struct bfd_elf_special_section *
29ef7005 2265_bfd_elf_get_sec_type_attr (bfd *abfd, asection *sec)
2f89ff8d 2266{
551b43fd
AM		 2267 int i;
2268 const struct bfd_elf_special_section *spec;
29ef7005 2269 const struct elf_backend_data *bed;
2f89ff8d
L		 2270
2271 /* See if this is one of the special sections. */
551b43fd
AM		 2272 if (sec->name == NULL)
2273 return NULL;
2f89ff8d 2274
29ef7005
L		 2275 bed = get_elf_backend_data (abfd);
2276 spec = bed->special_sections;
2277 if (spec)
2278 {
2279 spec = _bfd_elf_get_special_section (sec->name,
2280 bed->special_sections,
2281 sec->use_rela_p);
2282 if (spec != NULL)
2283 return spec;
2284 }
2285
551b43fd
AM		 2286 if (sec->name[0] != '.')
2287 return NULL;
2f89ff8d 2288
551b43fd 2289 i = sec->name[1] - 'b';
1b315056 2290 if (i < 0 || i > 'z' - 'b')
551b43fd
AM		 2291 return NULL;
2292
2293 spec = special_sections[i];
2f89ff8d 2294
551b43fd
AM		 2295 if (spec == NULL)
2296 return NULL;
2297
2298 return _bfd_elf_get_special_section (sec->name, spec, sec->use_rela_p);
2f89ff8d
L		 2299}
2300
b34976b6 2301bfd_boolean
217aa764 2302_bfd_elf_new_section_hook (bfd *abfd, asection *sec)
252b5132
RH		 2303{
2304 struct bfd_elf_section_data *sdata;
551b43fd 2305 const struct elf_backend_data *bed;
7dcb9820 2306 const struct bfd_elf_special_section *ssect;
252b5132 2307
f0abc2a1
AM		 2308 sdata = (struct bfd_elf_section_data *) sec->used_by_bfd;
2309 if (sdata == NULL)
2310 {
a50b1753
NC		 2311 sdata = (struct bfd_elf_section_data *) bfd_zalloc (abfd,
2312 sizeof (*sdata));
f0abc2a1
AM		 2313 if (sdata == NULL)
2314 return FALSE;
217aa764 2315 sec->used_by_bfd = sdata;
f0abc2a1 2316 }
bf572ba0 2317
551b43fd
AM		 2318 /* Indicate whether or not this section should use RELA relocations. */
2319 bed = get_elf_backend_data (abfd);
2320 sec->use_rela_p = bed->default_use_rela_p;
2321
e843e0f8
L		 2322 /* When we read a file, we don't need to set ELF section type and
2323 flags. They will be overridden in _bfd_elf_make_section_from_shdr
2324 anyway. We will set ELF section type and flags for all linker
2325 created sections. If user specifies BFD section flags, we will
2326 set ELF section type and flags based on BFD section flags in
02ecc8e9
L		 2327 elf_fake_sections. Special handling for .init_array/.fini_array
2328 output sections since they may contain .ctors/.dtors input
2329 sections. We don't want _bfd_elf_init_private_section_data to
2330 copy ELF section type from .ctors/.dtors input sections. */
2331 if (abfd->direction != read_direction
3496cb2a 2332 || (sec->flags & SEC_LINKER_CREATED) != 0)
2f89ff8d 2333 {
551b43fd 2334 ssect = (*bed->get_sec_type_attr) (abfd, sec);
02ecc8e9
L		 2335 if (ssect != NULL
2336 && (!sec->flags
2337 || (sec->flags & SEC_LINKER_CREATED) != 0
2338 || ssect->type == SHT_INIT_ARRAY
2339 || ssect->type == SHT_FINI_ARRAY))
a31501e9
L		 2340 {
2341 elf_section_type (sec) = ssect->type;
2342 elf_section_flags (sec) = ssect->attr;
2343 }
2f89ff8d
L		 2344 }
2345
f592407e 2346 return _bfd_generic_new_section_hook (abfd, sec);
252b5132
RH		 2347}
2348
2349/* Create a new bfd section from an ELF program header.
2350
2351 Since program segments have no names, we generate a synthetic name
2352 of the form segment<NUM>, where NUM is generally the index in the
2353 program header table. For segments that are split (see below) we
2354 generate the names segment<NUM>a and segment<NUM>b.
2355
2356 Note that some program segments may have a file size that is different than
2357 (less than) the memory size. All this means is that at execution the
2358 system must allocate the amount of memory specified by the memory size,
2359 but only initialize it with the first "file size" bytes read from the
2360 file. This would occur for example, with program segments consisting
2361 of combined data+bss.
2362
2363 To handle the above situation, this routine generates TWO bfd sections
2364 for the single program segment. The first has the length specified by
2365 the file size of the segment, and the second has the length specified
2366 by the difference between the two sizes. In effect, the segment is split
d5191d0c 2367 into its initialized and uninitialized parts.
252b5132
RH		 2368
2369 */
2370
b34976b6 2371bfd_boolean
217aa764
AM		 2372_bfd_elf_make_section_from_phdr (bfd *abfd,
2373 Elf_Internal_Phdr *hdr,
91d6fa6a 2374 int hdr_index,
a50b1753 2375 const char *type_name)
252b5132
RH		 2376{
2377 asection *newsect;
2378 char *name;
2379 char namebuf[64];
d4c88bbb 2380 size_t len;
252b5132
RH		 2381 int split;
2382
2383 split = ((hdr->p_memsz > 0)
2384 && (hdr->p_filesz > 0)
2385 && (hdr->p_memsz > hdr->p_filesz));
d5191d0c
AM		 2386
2387 if (hdr->p_filesz > 0)
252b5132 2388 {
91d6fa6a 2389 sprintf (namebuf, "%s%d%s", type_name, hdr_index, split ? "a" : "");
d5191d0c 2390 len = strlen (namebuf) + 1;
a50b1753 2391 name = (char *) bfd_alloc (abfd, len);
d5191d0c
AM		 2392 if (!name)
2393 return FALSE;
2394 memcpy (name, namebuf, len);
2395 newsect = bfd_make_section (abfd, name);
2396 if (newsect == NULL)
2397 return FALSE;
2398 newsect->vma = hdr->p_vaddr;
2399 newsect->lma = hdr->p_paddr;
2400 newsect->size = hdr->p_filesz;
2401 newsect->filepos = hdr->p_offset;
2402 newsect->flags |= SEC_HAS_CONTENTS;
2403 newsect->alignment_power = bfd_log2 (hdr->p_align);
2404 if (hdr->p_type == PT_LOAD)
252b5132 2405 {
d5191d0c
AM		 2406 newsect->flags |= SEC_ALLOC;
2407 newsect->flags |= SEC_LOAD;
2408 if (hdr->p_flags & PF_X)
2409 {
2410 /* FIXME: all we known is that it has execute PERMISSION,
2411 may be data. */
2412 newsect->flags |= SEC_CODE;
2413 }
2414 }
2415 if (!(hdr->p_flags & PF_W))
2416 {
2417 newsect->flags |= SEC_READONLY;
252b5132 2418 }
252b5132
RH		 2419 }
2420
d5191d0c 2421 if (hdr->p_memsz > hdr->p_filesz)
252b5132 2422 {
d5191d0c
AM		 2423 bfd_vma align;
2424
91d6fa6a 2425 sprintf (namebuf, "%s%d%s", type_name, hdr_index, split ? "b" : "");
d4c88bbb 2426 len = strlen (namebuf) + 1;
a50b1753 2427 name = (char *) bfd_alloc (abfd, len);
252b5132 2428 if (!name)
b34976b6 2429 return FALSE;
d4c88bbb 2430 memcpy (name, namebuf, len);
252b5132
RH		 2431 newsect = bfd_make_section (abfd, name);
2432 if (newsect == NULL)
b34976b6 2433 return FALSE;
252b5132
RH		 2434 newsect->vma = hdr->p_vaddr + hdr->p_filesz;
2435 newsect->lma = hdr->p_paddr + hdr->p_filesz;
eea6121a 2436 newsect->size = hdr->p_memsz - hdr->p_filesz;
d5191d0c
AM		 2437 newsect->filepos = hdr->p_offset + hdr->p_filesz;
2438 align = newsect->vma & -newsect->vma;
2439 if (align == 0 || align > hdr->p_align)
2440 align = hdr->p_align;
2441 newsect->alignment_power = bfd_log2 (align);
252b5132
RH		 2442 if (hdr->p_type == PT_LOAD)
2443 {
d5191d0c
AM		 2444 /* Hack for gdb. Segments that have not been modified do
2445 not have their contents written to a core file, on the
2446 assumption that a debugger can find the contents in the
2447 executable. We flag this case by setting the fake
2448 section size to zero. Note that "real" bss sections will
2449 always have their contents dumped to the core file. */
2450 if (bfd_get_format (abfd) == bfd_core)
2451 newsect->size = 0;
252b5132
RH		 2452 newsect->flags |= SEC_ALLOC;
2453 if (hdr->p_flags & PF_X)
2454 newsect->flags |= SEC_CODE;
2455 }
2456 if (!(hdr->p_flags & PF_W))
2457 newsect->flags |= SEC_READONLY;
2458 }
2459
b34976b6 2460 return TRUE;
252b5132
RH		 2461}
2462
b34976b6 2463bfd_boolean
91d6fa6a 2464bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int hdr_index)
20cfcaae 2465{
9c5bfbb7 2466 const struct elf_backend_data *bed;
20cfcaae
NC		 2467
2468 switch (hdr->p_type)
2469 {
2470 case PT_NULL:
91d6fa6a 2471 return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "null");
20cfcaae
NC		 2472
2473 case PT_LOAD:
91d6fa6a 2474 return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "load");
20cfcaae
NC		 2475
2476 case PT_DYNAMIC:
91d6fa6a 2477 return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "dynamic");
20cfcaae
NC		 2478
2479 case PT_INTERP:
91d6fa6a 2480 return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "interp");
20cfcaae
NC		 2481
2482 case PT_NOTE:
91d6fa6a 2483 if (! _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "note"))
b34976b6 2484 return FALSE;
718175fa 2485 if (! elf_read_notes (abfd, hdr->p_offset, hdr->p_filesz))
b34976b6
AM		 2486 return FALSE;
2487 return TRUE;
20cfcaae
NC		 2488
2489 case PT_SHLIB:
91d6fa6a 2490 return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "shlib");
20cfcaae
NC		 2491
2492 case PT_PHDR:
91d6fa6a 2493 return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "phdr");
20cfcaae 2494
811072d8 2495 case PT_GNU_EH_FRAME:
91d6fa6a 2496 return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index,
811072d8
RM		 2497 "eh_frame_hdr");
2498
2b05f1b7 2499 case PT_GNU_STACK:
91d6fa6a 2500 return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "stack");
9ee5e499 2501
8c37241b 2502 case PT_GNU_RELRO:
91d6fa6a 2503 return _bfd_elf_make_section_from_phdr (abfd, hdr, hdr_index, "relro");
8c37241b 2504
20cfcaae 2505 default:
8c1acd09 2506 /* Check for any processor-specific program segment types. */
20cfcaae 2507 bed = get_elf_backend_data (abfd);
91d6fa6a 2508 return bed->elf_backend_section_from_phdr (abfd, hdr, hdr_index, "proc");
20cfcaae
NC		 2509 }
2510}
2511
d4730f92
BS		 2512/* Return the REL_HDR for SEC, assuming there is only a single one, either
2513 REL or RELA. */
2514
2515Elf_Internal_Shdr *
2516_bfd_elf_single_rel_hdr (asection *sec)
2517{
2518 if (elf_section_data (sec)->rel.hdr)
2519 {
2520 BFD_ASSERT (elf_section_data (sec)->rela.hdr == NULL);
2521 return elf_section_data (sec)->rel.hdr;
2522 }
2523 else
2524 return elf_section_data (sec)->rela.hdr;
2525}
2526
2527/* Allocate and initialize a section-header for a new reloc section,
2528 containing relocations against ASECT. It is stored in RELDATA. If
2529 USE_RELA_P is TRUE, we use RELA relocations; otherwise, we use REL
2530 relocations. */
23bc299b 2531
b34976b6 2532bfd_boolean
217aa764 2533_bfd_elf_init_reloc_shdr (bfd *abfd,
d4730f92 2534 struct bfd_elf_section_reloc_data *reldata,
217aa764
AM		 2535 asection *asect,
2536 bfd_boolean use_rela_p)
23bc299b 2537{
d4730f92 2538 Elf_Internal_Shdr *rel_hdr;
23bc299b 2539 char *name;
9c5bfbb7 2540 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
d4730f92
BS		 2541 bfd_size_type amt;
2542
2543 amt = sizeof (Elf_Internal_Shdr);
2544 BFD_ASSERT (reldata->hdr == NULL);
2545 rel_hdr = bfd_zalloc (abfd, amt);
2546 reldata->hdr = rel_hdr;
23bc299b 2547
d324f6d6 2548 amt = sizeof ".rela" + strlen (asect->name);
a50b1753 2549 name = (char *) bfd_alloc (abfd, amt);
23bc299b 2550 if (name == NULL)
b34976b6 2551 return FALSE;
23bc299b
MM		 2552 sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name);
2553 rel_hdr->sh_name =
2b0f7ef9 2554 (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name,
b34976b6 2555 FALSE);
23bc299b 2556 if (rel_hdr->sh_name == (unsigned int) -1)
b34976b6 2557 return FALSE;
23bc299b
MM		 2558 rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL;
2559 rel_hdr->sh_entsize = (use_rela_p
2560 ? bed->s->sizeof_rela
2561 : bed->s->sizeof_rel);
72de5009 2562 rel_hdr->sh_addralign = (bfd_vma) 1 << bed->s->log_file_align;
23bc299b
MM		 2563 rel_hdr->sh_flags = 0;
2564 rel_hdr->sh_addr = 0;
2565 rel_hdr->sh_size = 0;
2566 rel_hdr->sh_offset = 0;
2567
b34976b6 2568 return TRUE;
23bc299b
MM		 2569}
2570
94be91de
JB		 2571/* Return the default section type based on the passed in section flags. */
2572
2573int
2574bfd_elf_get_default_section_type (flagword flags)
2575{
2576 if ((flags & SEC_ALLOC) != 0
2e76e85a 2577 && (flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
94be91de
JB		 2578 return SHT_NOBITS;
2579 return SHT_PROGBITS;
2580}
2581
d4730f92
BS		 2582struct fake_section_arg
2583{
2584 struct bfd_link_info *link_info;
2585 bfd_boolean failed;
2586};
2587
252b5132
RH		 2588/* Set up an ELF internal section header for a section. */
2589
252b5132 2590static void
d4730f92 2591elf_fake_sections (bfd *abfd, asection *asect, void *fsarg)
252b5132 2592{
d4730f92 2593 struct fake_section_arg *arg = (struct fake_section_arg *)fsarg;
9c5bfbb7 2594 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
d4730f92 2595 struct bfd_elf_section_data *esd = elf_section_data (asect);
252b5132 2596 Elf_Internal_Shdr *this_hdr;
0414f35b 2597 unsigned int sh_type;
252b5132 2598
d4730f92 2599 if (arg->failed)
252b5132
RH		 2600 {
2601 /* We already failed; just get out of the bfd_map_over_sections
08a40648 2602 loop. */
252b5132
RH		 2603 return;
2604 }
2605
d4730f92 2606 this_hdr = &esd->this_hdr;
252b5132 2607
e57b5356
AM		 2608 this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd),
2609 asect->name, FALSE);
2610 if (this_hdr->sh_name == (unsigned int) -1)
252b5132 2611 {
d4730f92 2612 arg->failed = TRUE;
252b5132
RH		 2613 return;
2614 }
2615
a4d8e49b 2616 /* Don't clear sh_flags. Assembler may set additional bits. */
252b5132
RH		 2617
2618 if ((asect->flags & SEC_ALLOC) != 0
2619 || asect->user_set_vma)
2620 this_hdr->sh_addr = asect->vma;
2621 else
2622 this_hdr->sh_addr = 0;
2623
2624 this_hdr->sh_offset = 0;
eea6121a 2625 this_hdr->sh_size = asect->size;
252b5132 2626 this_hdr->sh_link = 0;
72de5009 2627 this_hdr->sh_addralign = (bfd_vma) 1 << asect->alignment_power;
252b5132
RH		 2628 /* The sh_entsize and sh_info fields may have been set already by
2629 copy_private_section_data. */
2630
2631 this_hdr->bfd_section = asect;
2632 this_hdr->contents = NULL;
2633
3cddba1e
L		 2634 /* If the section type is unspecified, we set it based on
2635 asect->flags. */
98ece1b3
AM		 2636 if ((asect->flags & SEC_GROUP) != 0)
2637 sh_type = SHT_GROUP;
98ece1b3 2638 else
94be91de 2639 sh_type = bfd_elf_get_default_section_type (asect->flags);
98ece1b3 2640
3cddba1e 2641 if (this_hdr->sh_type == SHT_NULL)
98ece1b3
AM		 2642 this_hdr->sh_type = sh_type;
2643 else if (this_hdr->sh_type == SHT_NOBITS
2644 && sh_type == SHT_PROGBITS
2645 && (asect->flags & SEC_ALLOC) != 0)
3cddba1e 2646 {
98ece1b3
AM		 2647 /* Warn if we are changing a NOBITS section to PROGBITS, but
2648 allow the link to proceed. This can happen when users link
2649 non-bss input sections to bss output sections, or emit data
2650 to a bss output section via a linker script. */
2651 (*_bfd_error_handler)
58f0869b 2652 (_("warning: section `%A' type changed to PROGBITS"), asect);
98ece1b3 2653 this_hdr->sh_type = sh_type;
3cddba1e
L		 2654 }
2655
2f89ff8d 2656 switch (this_hdr->sh_type)
252b5132 2657 {
2f89ff8d 2658 default:
2f89ff8d
L		 2659 break;
2660
2661 case SHT_STRTAB:
2662 case SHT_INIT_ARRAY:
2663 case SHT_FINI_ARRAY:
2664 case SHT_PREINIT_ARRAY:
2665 case SHT_NOTE:
2666 case SHT_NOBITS:
2667 case SHT_PROGBITS:
2668 break;
2669
2670 case SHT_HASH:
c7ac6ff8 2671 this_hdr->sh_entsize = bed->s->sizeof_hash_entry;
2f89ff8d 2672 break;
5de3bf90 2673
2f89ff8d 2674 case SHT_DYNSYM:
252b5132 2675 this_hdr->sh_entsize = bed->s->sizeof_sym;
2f89ff8d
L		 2676 break;
2677
2678 case SHT_DYNAMIC:
252b5132 2679 this_hdr->sh_entsize = bed->s->sizeof_dyn;
2f89ff8d
L		 2680 break;
2681
2682 case SHT_RELA:
2683 if (get_elf_backend_data (abfd)->may_use_rela_p)
2684 this_hdr->sh_entsize = bed->s->sizeof_rela;
2685 break;
2686
2687 case SHT_REL:
2688 if (get_elf_backend_data (abfd)->may_use_rel_p)
2689 this_hdr->sh_entsize = bed->s->sizeof_rel;
2690 break;
2691
2692 case SHT_GNU_versym:
252b5132 2693 this_hdr->sh_entsize = sizeof (Elf_External_Versym);
2f89ff8d
L		 2694 break;
2695
2696 case SHT_GNU_verdef:
252b5132
RH		 2697 this_hdr->sh_entsize = 0;
2698 /* objcopy or strip will copy over sh_info, but may not set
08a40648
AM		 2699 cverdefs. The linker will set cverdefs, but sh_info will be
2700 zero. */
252b5132
RH		 2701 if (this_hdr->sh_info == 0)
2702 this_hdr->sh_info = elf_tdata (abfd)->cverdefs;
2703 else
2704 BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0
2705 || this_hdr->sh_info == elf_tdata (abfd)->cverdefs);
2f89ff8d
L		 2706 break;
2707
2708 case SHT_GNU_verneed:
252b5132
RH		 2709 this_hdr->sh_entsize = 0;
2710 /* objcopy or strip will copy over sh_info, but may not set
08a40648
AM		 2711 cverrefs. The linker will set cverrefs, but sh_info will be
2712 zero. */
252b5132
RH		 2713 if (this_hdr->sh_info == 0)
2714 this_hdr->sh_info = elf_tdata (abfd)->cverrefs;
2715 else
2716 BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0
2717 || this_hdr->sh_info == elf_tdata (abfd)->cverrefs);
2f89ff8d
L		 2718 break;
2719
2720 case SHT_GROUP:
1783205a 2721 this_hdr->sh_entsize = GRP_ENTRY_SIZE;
2f89ff8d 2722 break;
fdc90cb4
JJ		 2723
2724 case SHT_GNU_HASH:
2725 this_hdr->sh_entsize = bed->s->arch_size == 64 ? 0 : 4;
2726 break;
dbb410c3 2727 }
252b5132
RH		 2728
2729 if ((asect->flags & SEC_ALLOC) != 0)
2730 this_hdr->sh_flags |= SHF_ALLOC;
2731 if ((asect->flags & SEC_READONLY) == 0)
2732 this_hdr->sh_flags |= SHF_WRITE;
2733 if ((asect->flags & SEC_CODE) != 0)
2734 this_hdr->sh_flags |= SHF_EXECINSTR;
f5fa8ca2
JJ		 2735 if ((asect->flags & SEC_MERGE) != 0)
2736 {
2737 this_hdr->sh_flags |= SHF_MERGE;
2738 this_hdr->sh_entsize = asect->entsize;
2739 if ((asect->flags & SEC_STRINGS) != 0)
2740 this_hdr->sh_flags |= SHF_STRINGS;
2741 }
1126897b 2742 if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL)
dbb410c3 2743 this_hdr->sh_flags |= SHF_GROUP;
13ae64f3 2744 if ((asect->flags & SEC_THREAD_LOCAL) != 0)
704afa60
JJ		 2745 {
2746 this_hdr->sh_flags |= SHF_TLS;
3a800eb9
AM		 2747 if (asect->size == 0
2748 && (asect->flags & SEC_HAS_CONTENTS) == 0)
704afa60 2749 {
3a800eb9 2750 struct bfd_link_order *o = asect->map_tail.link_order;
b34976b6 2751
704afa60 2752 this_hdr->sh_size = 0;
3a800eb9
AM		 2753 if (o != NULL)
2754 {
704afa60 2755 this_hdr->sh_size = o->offset + o->size;
3a800eb9
AM		 2756 if (this_hdr->sh_size != 0)
2757 this_hdr->sh_type = SHT_NOBITS;
2758 }
704afa60
JJ		 2759 }
2760 }
18ae9cc1
L		 2761 if ((asect->flags & (SEC_GROUP | SEC_EXCLUDE)) == SEC_EXCLUDE)
2762 this_hdr->sh_flags |= SHF_EXCLUDE;
252b5132 2763
d4730f92
BS		 2764 /* If the section has relocs, set up a section header for the
2765 SHT_REL[A] section. If two relocation sections are required for
2766 this section, it is up to the processor-specific back-end to
2767 create the other. */
2768 if ((asect->flags & SEC_RELOC) != 0)
2769 {
2770 /* When doing a relocatable link, create both REL and RELA sections if
2771 needed. */
2772 if (arg->link_info
2773 /* Do the normal setup if we wouldn't create any sections here. */
2774 && esd->rel.count + esd->rela.count > 0
2775 && (arg->link_info->relocatable || arg->link_info->emitrelocations))
2776 {
2777 if (esd->rel.count && esd->rel.hdr == NULL
2778 && !_bfd_elf_init_reloc_shdr (abfd, &esd->rel, asect, FALSE))
2779 {
2780 arg->failed = TRUE;
2781 return;
2782 }
2783 if (esd->rela.count && esd->rela.hdr == NULL
2784 && !_bfd_elf_init_reloc_shdr (abfd, &esd->rela, asect, TRUE))
2785 {
2786 arg->failed = TRUE;
2787 return;
2788 }
2789 }
2790 else if (!_bfd_elf_init_reloc_shdr (abfd,
2791 (asect->use_rela_p
2792 ? &esd->rela : &esd->rel),
2793 asect,
2794 asect->use_rela_p))
2795 arg->failed = TRUE;
2796 }
2797
252b5132 2798 /* Check for processor-specific section types. */
0414f35b 2799 sh_type = this_hdr->sh_type;
e1fddb6b
AO		 2800 if (bed->elf_backend_fake_sections
2801 && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect))
d4730f92 2802 arg->failed = TRUE;
252b5132 2803
42bb2e33 2804 if (sh_type == SHT_NOBITS && asect->size != 0)
0414f35b
AM		 2805 {
2806 /* Don't change the header type from NOBITS if we are being
42bb2e33 2807 called for objcopy --only-keep-debug. */
0414f35b
AM		 2808 this_hdr->sh_type = sh_type;
2809 }
252b5132
RH		 2810}
2811
bcacc0f5
AM		 2812/* Fill in the contents of a SHT_GROUP section. Called from
2813 _bfd_elf_compute_section_file_positions for gas, objcopy, and
2814 when ELF targets use the generic linker, ld. Called for ld -r
2815 from bfd_elf_final_link. */
dbb410c3 2816
1126897b 2817void
217aa764 2818bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg)
dbb410c3 2819{
a50b1753 2820 bfd_boolean *failedptr = (bfd_boolean *) failedptrarg;
9dce4196 2821 asection *elt, *first;
dbb410c3 2822 unsigned char *loc;
b34976b6 2823 bfd_boolean gas;
dbb410c3 2824
7e4111ad
L		 2825 /* Ignore linker created group section. See elfNN_ia64_object_p in
2826 elfxx-ia64.c. */
2827 if (((sec->flags & (SEC_GROUP | SEC_LINKER_CREATED)) != SEC_GROUP)
dbb410c3
AM		 2828 || *failedptr)
2829 return;
2830
bcacc0f5
AM		 2831 if (elf_section_data (sec)->this_hdr.sh_info == 0)
2832 {
2833 unsigned long symindx = 0;
2834
2835 /* elf_group_id will have been set up by objcopy and the
2836 generic linker. */
2837 if (elf_group_id (sec) != NULL)
2838 symindx = elf_group_id (sec)->udata.i;
1126897b 2839
bcacc0f5
AM		 2840 if (symindx == 0)
2841 {
2842 /* If called from the assembler, swap_out_syms will have set up
2843 elf_section_syms. */
2844 BFD_ASSERT (elf_section_syms (abfd) != NULL);
2845 symindx = elf_section_syms (abfd)[sec->index]->udata.i;
2846 }
2847 elf_section_data (sec)->this_hdr.sh_info = symindx;
2848 }
2849 else if (elf_section_data (sec)->this_hdr.sh_info == (unsigned int) -2)
1126897b 2850 {
bcacc0f5
AM		 2851 /* The ELF backend linker sets sh_info to -2 when the group
2852 signature symbol is global, and thus the index can't be
2853 set until all local symbols are output. */
2854 asection *igroup = elf_sec_group (elf_next_in_group (sec));
2855 struct bfd_elf_section_data *sec_data = elf_section_data (igroup);
2856 unsigned long symndx = sec_data->this_hdr.sh_info;
2857 unsigned long extsymoff = 0;
2858 struct elf_link_hash_entry *h;
2859
2860 if (!elf_bad_symtab (igroup->owner))
2861 {
2862 Elf_Internal_Shdr *symtab_hdr;
2863
2864 symtab_hdr = &elf_tdata (igroup->owner)->symtab_hdr;
2865 extsymoff = symtab_hdr->sh_info;
2866 }
2867 h = elf_sym_hashes (igroup->owner)[symndx - extsymoff];
2868 while (h->root.type == bfd_link_hash_indirect
2869 || h->root.type == bfd_link_hash_warning)
2870 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2871
2872 elf_section_data (sec)->this_hdr.sh_info = h->indx;
1126897b 2873 }
dbb410c3 2874
1126897b 2875 /* The contents won't be allocated for "ld -r" or objcopy. */
b34976b6 2876 gas = TRUE;
dbb410c3
AM		 2877 if (sec->contents == NULL)
2878 {
b34976b6 2879 gas = FALSE;
a50b1753 2880 sec->contents = (unsigned char *) bfd_alloc (abfd, sec->size);
9dce4196
AM		 2881
2882 /* Arrange for the section to be written out. */
2883 elf_section_data (sec)->this_hdr.contents = sec->contents;
dbb410c3
AM		 2884 if (sec->contents == NULL)
2885 {
b34976b6 2886 *failedptr = TRUE;
dbb410c3
AM		 2887 return;
2888 }
2889 }
2890
eea6121a 2891 loc = sec->contents + sec->size;
dbb410c3 2892
9dce4196
AM		 2893 /* Get the pointer to the first section in the group that gas
2894 squirreled away here. objcopy arranges for this to be set to the
2895 start of the input section group. */
2896 first = elt = elf_next_in_group (sec);
dbb410c3
AM		 2897
2898 /* First element is a flag word. Rest of section is elf section
2899 indices for all the sections of the group. Write them backwards
2900 just to keep the group in the same order as given in .section
2901 directives, not that it matters. */
2902 while (elt != NULL)
2903 {
9dce4196 2904 asection *s;
9dce4196 2905
9dce4196 2906 s = elt;
415f38a6
AM		 2907 if (!gas)
2908 s = s->output_section;
2909 if (s != NULL
2910 && !bfd_is_abs_section (s))
01e1a5bc 2911 {
415f38a6
AM		 2912 unsigned int idx = elf_section_data (s)->this_idx;
2913
01e1a5bc 2914 loc -= 4;
01e1a5bc
NC		 2915 H_PUT_32 (abfd, idx, loc);
2916 }
945906ff 2917 elt = elf_next_in_group (elt);
9dce4196
AM		 2918 if (elt == first)
2919 break;
dbb410c3
AM		 2920 }
2921
3d7f7666 2922 if ((loc -= 4) != sec->contents)
9dce4196 2923 abort ();
dbb410c3 2924
9dce4196 2925 H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc);
dbb410c3
AM		 2926}
2927
252b5132
RH		 2928/* Assign all ELF section numbers. The dummy first section is handled here
2929 too. The link/info pointers for the standard section types are filled
2930 in here too, while we're at it. */
2931
b34976b6 2932static bfd_boolean
da9f89d4 2933assign_section_numbers (bfd *abfd, struct bfd_link_info *link_info)
252b5132
RH		 2934{
2935 struct elf_obj_tdata *t = elf_tdata (abfd);
2936 asection *sec;
2b0f7ef9 2937 unsigned int section_number, secn;
252b5132 2938 Elf_Internal_Shdr **i_shdrp;
47cc2cf5 2939 struct bfd_elf_section_data *d;
3516e984 2940 bfd_boolean need_symtab;
252b5132
RH		 2941
2942 section_number = 1;
2943
2b0f7ef9
JJ		 2944 _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd));
2945
da9f89d4
L		 2946 /* SHT_GROUP sections are in relocatable files only. */
2947 if (link_info == NULL || link_info->relocatable)
252b5132 2948 {
da9f89d4 2949 /* Put SHT_GROUP sections first. */
04dd1667 2950 for (sec = abfd->sections; sec != NULL; sec = sec->next)
47cc2cf5 2951 {
5daa8fe7 2952 d = elf_section_data (sec);
da9f89d4
L		 2953
2954 if (d->this_hdr.sh_type == SHT_GROUP)
08a40648 2955 {
5daa8fe7 2956 if (sec->flags & SEC_LINKER_CREATED)
da9f89d4
L		 2957 {
2958 /* Remove the linker created SHT_GROUP sections. */
5daa8fe7 2959 bfd_section_list_remove (abfd, sec);
da9f89d4 2960 abfd->section_count--;
da9f89d4 2961 }
08a40648 2962 else
4fbb74a6 2963 d->this_idx = section_number++;
da9f89d4 2964 }
47cc2cf5
PB		 2965 }
2966 }
2967
2968 for (sec = abfd->sections; sec; sec = sec->next)
2969 {
2970 d = elf_section_data (sec);
2971
2972 if (d->this_hdr.sh_type != SHT_GROUP)
4fbb74a6 2973 d->this_idx = section_number++;
2b0f7ef9 2974 _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name);
d4730f92 2975 if (d->rel.hdr)
2b0f7ef9 2976 {
d4730f92
BS		 2977 d->rel.idx = section_number++;
2978 _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel.hdr->sh_name);
2b0f7ef9 2979 }
d4730f92
BS		 2980 else
2981 d->rel.idx = 0;
23bc299b 2982
d4730f92 2983 if (d->rela.hdr)
2b0f7ef9 2984 {
d4730f92
BS		 2985 d->rela.idx = section_number++;
2986 _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rela.hdr->sh_name);
2b0f7ef9 2987 }
23bc299b 2988 else
d4730f92 2989 d->rela.idx = 0;
252b5132
RH		 2990 }
2991
2992 t->shstrtab_section = section_number++;
2b0f7ef9 2993 _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name);
252b5132 2994 elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section;
252b5132 2995
3516e984
L		 2996 need_symtab = (bfd_get_symcount (abfd) > 0
2997 || (link_info == NULL
2998 && ((abfd->flags & (EXEC_P | DYNAMIC | HAS_RELOC))
2999 == HAS_RELOC)));
3000 if (need_symtab)
252b5132
RH		 3001 {
3002 t->symtab_section = section_number++;
2b0f7ef9 3003 _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name);
4fbb74a6 3004 if (section_number > ((SHN_LORESERVE - 2) & 0xFFFF))
9ad5cbcf 3005 {
9ad5cbcf
AM		 3006 t->symtab_shndx_section = section_number++;
3007 t->symtab_shndx_hdr.sh_name
3008 = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd),
b34976b6 3009 ".symtab_shndx", FALSE);
9ad5cbcf 3010 if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1)
b34976b6 3011 return FALSE;
9ad5cbcf 3012 }
252b5132 3013 t->strtab_section = section_number++;
2b0f7ef9 3014 _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name);
252b5132
RH		 3015 }
3016
2b0f7ef9
JJ		 3017 _bfd_elf_strtab_finalize (elf_shstrtab (abfd));
3018 t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd));
9ad5cbcf
AM		 3019
3020 elf_numsections (abfd) = section_number;
252b5132
RH		 3021 elf_elfheader (abfd)->e_shnum = section_number;
3022
3023 /* Set up the list of section header pointers, in agreement with the
3024 indices. */
a50b1753
NC		 3025 i_shdrp = (Elf_Internal_Shdr **) bfd_zalloc2 (abfd, section_number,
3026 sizeof (Elf_Internal_Shdr *));
252b5132 3027 if (i_shdrp == NULL)
b34976b6 3028 return FALSE;
252b5132 3029
a50b1753
NC		 3030 i_shdrp[0] = (Elf_Internal_Shdr *) bfd_zalloc (abfd,
3031 sizeof (Elf_Internal_Shdr));
252b5132
RH		 3032 if (i_shdrp[0] == NULL)
3033 {
3034 bfd_release (abfd, i_shdrp);
b34976b6 3035 return FALSE;
252b5132 3036 }
252b5132
RH		 3037
3038 elf_elfsections (abfd) = i_shdrp;
3039
3040 i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr;
3516e984 3041 if (need_symtab)
252b5132
RH		 3042 {
3043 i_shdrp[t->symtab_section] = &t->symtab_hdr;
4fbb74a6 3044 if (elf_numsections (abfd) > (SHN_LORESERVE & 0xFFFF))
9ad5cbcf
AM		 3045 {
3046 i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr;
3047 t->symtab_shndx_hdr.sh_link = t->symtab_section;
3048 }
252b5132
RH		 3049 i_shdrp[t->strtab_section] = &t->strtab_hdr;
3050 t->symtab_hdr.sh_link = t->strtab_section;
3051 }
38ce5b11 3052
252b5132
RH		 3053 for (sec = abfd->sections; sec; sec = sec->next)
3054 {
252b5132
RH		 3055 asection *s;
3056 const char *name;
3057
91d6fa6a
NC		 3058 d = elf_section_data (sec);
3059
252b5132 3060 i_shdrp[d->this_idx] = &d->this_hdr;
d4730f92
BS		 3061 if (d->rel.idx != 0)
3062 i_shdrp[d->rel.idx] = d->rel.hdr;
3063 if (d->rela.idx != 0)
3064 i_shdrp[d->rela.idx] = d->rela.hdr;
252b5132
RH		 3065
3066 /* Fill in the sh_link and sh_info fields while we're at it. */
3067
3068 /* sh_link of a reloc section is the section index of the symbol
3069 table. sh_info is the section index of the section to which
3070 the relocation entries apply. */
d4730f92 3071 if (d->rel.idx != 0)
252b5132 3072 {
d4730f92
BS		 3073 d->rel.hdr->sh_link = t->symtab_section;
3074 d->rel.hdr->sh_info = d->this_idx;
252b5132 3075 }
d4730f92 3076 if (d->rela.idx != 0)
23bc299b 3077 {
d4730f92
BS		 3078 d->rela.hdr->sh_link = t->symtab_section;
3079 d->rela.hdr->sh_info = d->this_idx;
23bc299b 3080 }
252b5132 3081
38ce5b11
L		 3082 /* We need to set up sh_link for SHF_LINK_ORDER. */
3083 if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0)
3084 {
3085 s = elf_linked_to_section (sec);
3086 if (s)
38ce5b11 3087 {
f2876037 3088 /* elf_linked_to_section points to the input section. */
ccd2ec6a 3089 if (link_info != NULL)
38ce5b11 3090 {
f2876037 3091 /* Check discarded linkonce section. */
dbaa2011 3092 if (discarded_section (s))
38ce5b11 3093 {
ccd2ec6a
L		 3094 asection *kept;
3095 (*_bfd_error_handler)
3096 (_("%B: sh_link of section `%A' points to discarded section `%A' of `%B'"),
3097 abfd, d->this_hdr.bfd_section,
3098 s, s->owner);
3099 /* Point to the kept section if it has the same
3100 size as the discarded one. */
c0f00686 3101 kept = _bfd_elf_check_kept_section (s, link_info);
ccd2ec6a 3102 if (kept == NULL)
185d09ad 3103 {
ccd2ec6a
L		 3104 bfd_set_error (bfd_error_bad_value);
3105 return FALSE;
185d09ad 3106 }
ccd2ec6a 3107 s = kept;
38ce5b11 3108 }
e424ecc8 3109
ccd2ec6a
L		 3110 s = s->output_section;
3111 BFD_ASSERT (s != NULL);
38ce5b11 3112 }
f2876037
L		 3113 else
3114 {
3115 /* Handle objcopy. */
3116 if (s->output_section == NULL)
3117 {
3118 (*_bfd_error_handler)
3119 (_("%B: sh_link of section `%A' points to removed section `%A' of `%B'"),
3120 abfd, d->this_hdr.bfd_section, s, s->owner);
3121 bfd_set_error (bfd_error_bad_value);
3122 return FALSE;
3123 }
3124 s = s->output_section;
3125 }
ccd2ec6a
L		 3126 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
3127 }
3128 else
3129 {
3130 /* PR 290:
3131 The Intel C compiler generates SHT_IA_64_UNWIND with
3132 SHF_LINK_ORDER. But it doesn't set the sh_link or
3133 sh_info fields. Hence we could get the situation
08a40648 3134 where s is NULL. */
ccd2ec6a
L		 3135 const struct elf_backend_data *bed
3136 = get_elf_backend_data (abfd);
3137 if (bed->link_order_error_handler)
3138 bed->link_order_error_handler
3139 (_("%B: warning: sh_link not set for section `%A'"),
3140 abfd, sec);
38ce5b11
L		 3141 }
3142 }
3143
252b5132
RH		 3144 switch (d->this_hdr.sh_type)
3145 {
3146 case SHT_REL:
3147 case SHT_RELA:
3148 /* A reloc section which we are treating as a normal BFD
3149 section. sh_link is the section index of the symbol
3150 table. sh_info is the section index of the section to
3151 which the relocation entries apply. We assume that an
3152 allocated reloc section uses the dynamic symbol table.
3153 FIXME: How can we be sure? */
3154 s = bfd_get_section_by_name (abfd, ".dynsym");
3155 if (s != NULL)
3156 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
3157
3158 /* We look up the section the relocs apply to by name. */
3159 name = sec->name;
3160 if (d->this_hdr.sh_type == SHT_REL)
3161 name += 4;
3162 else
3163 name += 5;
3164 s = bfd_get_section_by_name (abfd, name);
3165 if (s != NULL)
3166 d->this_hdr.sh_info = elf_section_data (s)->this_idx;
3167 break;
3168
3169 case SHT_STRTAB:
3170 /* We assume that a section named .stab*str is a stabs
3171 string section. We look for a section with the same name
3172 but without the trailing ``str'', and set its sh_link
3173 field to point to this section. */
0112cd26 3174 if (CONST_STRNEQ (sec->name, ".stab")
252b5132
RH		 3175 && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0)
3176 {
3177 size_t len;
3178 char *alc;
3179
3180 len = strlen (sec->name);
a50b1753 3181 alc = (char *) bfd_malloc (len - 2);
252b5132 3182 if (alc == NULL)
b34976b6 3183 return FALSE;
d4c88bbb 3184 memcpy (alc, sec->name, len - 3);
252b5132
RH		 3185 alc[len - 3] = '\0';
3186 s = bfd_get_section_by_name (abfd, alc);
3187 free (alc);
3188 if (s != NULL)
3189 {
3190 elf_section_data (s)->this_hdr.sh_link = d->this_idx;
3191
3192 /* This is a .stab section. */
0594c12d
AM		 3193 if (elf_section_data (s)->this_hdr.sh_entsize == 0)
3194 elf_section_data (s)->this_hdr.sh_entsize
3195 = 4 + 2 * bfd_get_arch_size (abfd) / 8;
252b5132
RH		 3196 }
3197 }
3198 break;
3199
3200 case SHT_DYNAMIC:
3201 case SHT_DYNSYM:
3202 case SHT_GNU_verneed:
3203 case SHT_GNU_verdef:
3204 /* sh_link is the section header index of the string table
3205 used for the dynamic entries, or the symbol table, or the
3206 version strings. */
3207 s = bfd_get_section_by_name (abfd, ".dynstr");
3208 if (s != NULL)
3209 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
3210 break;
3211
7f1204bb
JJ		 3212 case SHT_GNU_LIBLIST:
3213 /* sh_link is the section header index of the prelink library
08a40648
AM		 3214 list used for the dynamic entries, or the symbol table, or
3215 the version strings. */
7f1204bb
JJ		 3216 s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC)
3217 ? ".dynstr" : ".gnu.libstr");
3218 if (s != NULL)
3219 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
3220 break;
3221
252b5132 3222 case SHT_HASH:
fdc90cb4 3223 case SHT_GNU_HASH:
252b5132
RH		 3224 case SHT_GNU_versym:
3225 /* sh_link is the section header index of the symbol table
3226 this hash table or version table is for. */
3227 s = bfd_get_section_by_name (abfd, ".dynsym");
3228 if (s != NULL)
3229 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
3230 break;
dbb410c3
AM		 3231
3232 case SHT_GROUP:
3233 d->this_hdr.sh_link = t->symtab_section;
252b5132
RH		 3234 }
3235 }
3236
2b0f7ef9 3237 for (secn = 1; secn < section_number; ++secn)
9ad5cbcf
AM		 3238 if (i_shdrp[secn] == NULL)
3239 i_shdrp[secn] = i_shdrp[0];
3240 else
3241 i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd),
3242 i_shdrp[secn]->sh_name);
b34976b6 3243 return TRUE;
252b5132
RH		 3244}
3245
5372391b 3246static bfd_boolean
217aa764 3247sym_is_global (bfd *abfd, asymbol *sym)
252b5132
RH		 3248{
3249 /* If the backend has a special mapping, use it. */
9c5bfbb7 3250 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
217aa764
AM		 3251 if (bed->elf_backend_sym_is_global)
3252 return (*bed->elf_backend_sym_is_global) (abfd, sym);
252b5132 3253
e47bf690 3254 return ((sym->flags & (BSF_GLOBAL | BSF_WEAK | BSF_GNU_UNIQUE)) != 0
252b5132
RH		 3255 || bfd_is_und_section (bfd_get_section (sym))
3256 || bfd_is_com_section (bfd_get_section (sym)));
3257}
3258
5372391b 3259/* Don't output section symbols for sections that are not going to be
2633a79c 3260 output, or that are duplicates. */
5372391b
AM		 3261
3262static bfd_boolean
3263ignore_section_sym (bfd *abfd, asymbol *sym)
3264{
3265 return ((sym->flags & BSF_SECTION_SYM) != 0
0f0a5e58
AM		 3266 && !(sym->section->owner == abfd
3267 || (sym->section->output_section->owner == abfd
2633a79c
AM		 3268 && sym->section->output_offset == 0)
3269 || bfd_is_abs_section (sym->section)));
5372391b
AM		 3270}
3271
2633a79c
AM		 3272/* Map symbol from it's internal number to the external number, moving
3273 all local symbols to be at the head of the list. */
3274
b34976b6 3275static bfd_boolean
217aa764 3276elf_map_symbols (bfd *abfd)
252b5132 3277{
dc810e39 3278 unsigned int symcount = bfd_get_symcount (abfd);
252b5132
RH		 3279 asymbol **syms = bfd_get_outsymbols (abfd);
3280 asymbol **sect_syms;
dc810e39
AM		 3281 unsigned int num_locals = 0;
3282 unsigned int num_globals = 0;
3283 unsigned int num_locals2 = 0;
3284 unsigned int num_globals2 = 0;
252b5132 3285 int max_index = 0;
dc810e39 3286 unsigned int idx;
252b5132
RH		 3287 asection *asect;
3288 asymbol **new_syms;
252b5132
RH		 3289
3290#ifdef DEBUG
3291 fprintf (stderr, "elf_map_symbols\n");
3292 fflush (stderr);
3293#endif
3294
252b5132
RH		 3295 for (asect = abfd->sections; asect; asect = asect->next)
3296 {
3297 if (max_index < asect->index)
3298 max_index = asect->index;
3299 }
3300
3301 max_index++;
a50b1753 3302 sect_syms = (asymbol **) bfd_zalloc2 (abfd, max_index, sizeof (asymbol *));
252b5132 3303 if (sect_syms == NULL)
b34976b6 3304 return FALSE;
252b5132 3305 elf_section_syms (abfd) = sect_syms;
4e89ac30 3306 elf_num_section_syms (abfd) = max_index;
252b5132 3307
079e9a2f
AM		 3308 /* Init sect_syms entries for any section symbols we have already
3309 decided to output. */
252b5132
RH		 3310 for (idx = 0; idx < symcount; idx++)
3311 {
dc810e39 3312 asymbol *sym = syms[idx];
c044fabd 3313
252b5132 3314 if ((sym->flags & BSF_SECTION_SYM) != 0
0f0a5e58 3315 && sym->value == 0
2633a79c
AM		 3316 && !ignore_section_sym (abfd, sym)
3317 && !bfd_is_abs_section (sym->section))
252b5132 3318 {
5372391b 3319 asection *sec = sym->section;
252b5132 3320
5372391b
AM		 3321 if (sec->owner != abfd)
3322 sec = sec->output_section;
252b5132 3323
5372391b 3324 sect_syms[sec->index] = syms[idx];
252b5132
RH		 3325 }
3326 }
3327
252b5132
RH		 3328 /* Classify all of the symbols. */
3329 for (idx = 0; idx < symcount; idx++)
3330 {
2633a79c 3331 if (sym_is_global (abfd, syms[idx]))
252b5132 3332 num_globals++;
2633a79c
AM		 3333 else if (!ignore_section_sym (abfd, syms[idx]))
3334 num_locals++;
252b5132 3335 }
079e9a2f 3336
5372391b 3337 /* We will be adding a section symbol for each normal BFD section. Most
079e9a2f
AM		 3338 sections will already have a section symbol in outsymbols, but
3339 eg. SHT_GROUP sections will not, and we need the section symbol mapped
3340 at least in that case. */
252b5132
RH		 3341 for (asect = abfd->sections; asect; asect = asect->next)
3342 {
079e9a2f 3343 if (sect_syms[asect->index] == NULL)
252b5132 3344 {
079e9a2f 3345 if (!sym_is_global (abfd, asect->symbol))
252b5132
RH		 3346 num_locals++;
3347 else
3348 num_globals++;
252b5132
RH		 3349 }
3350 }
3351
3352 /* Now sort the symbols so the local symbols are first. */
a50b1753
NC		 3353 new_syms = (asymbol **) bfd_alloc2 (abfd, num_locals + num_globals,
3354 sizeof (asymbol *));
dc810e39 3355
252b5132 3356 if (new_syms == NULL)
b34976b6 3357 return FALSE;
252b5132
RH		 3358
3359 for (idx = 0; idx < symcount; idx++)
3360 {
3361 asymbol *sym = syms[idx];
dc810e39 3362 unsigned int i;
252b5132 3363
2633a79c
AM		 3364 if (sym_is_global (abfd, sym))
3365 i = num_locals + num_globals2++;
3366 else if (!ignore_section_sym (abfd, sym))
252b5132
RH		 3367 i = num_locals2++;
3368 else
2633a79c 3369 continue;
252b5132
RH		 3370 new_syms[i] = sym;
3371 sym->udata.i = i + 1;
3372 }
3373 for (asect = abfd->sections; asect; asect = asect->next)
3374 {
079e9a2f 3375 if (sect_syms[asect->index] == NULL)
252b5132 3376 {
079e9a2f 3377 asymbol *sym = asect->symbol;
dc810e39 3378 unsigned int i;
252b5132 3379
079e9a2f 3380 sect_syms[asect->index] = sym;
252b5132
RH		 3381 if (!sym_is_global (abfd, sym))
3382 i = num_locals2++;
3383 else
3384 i = num_locals + num_globals2++;
3385 new_syms[i] = sym;
3386 sym->udata.i = i + 1;
3387 }
3388 }
3389
3390 bfd_set_symtab (abfd, new_syms, num_locals + num_globals);
3391
3392 elf_num_locals (abfd) = num_locals;
3393 elf_num_globals (abfd) = num_globals;
b34976b6 3394 return TRUE;
252b5132
RH		 3395}
3396
3397/* Align to the maximum file alignment that could be required for any
3398 ELF data structure. */
3399
268b6b39 3400static inline file_ptr
217aa764 3401align_file_position (file_ptr off, int align)
252b5132
RH		 3402{
3403 return (off + align - 1) & ~(align - 1);
3404}
3405
3406/* Assign a file position to a section, optionally aligning to the
3407 required section alignment. */
3408
217aa764
AM		 3409file_ptr
3410_bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp,
3411 file_ptr offset,
3412 bfd_boolean align)
252b5132 3413{
72de5009
AM		 3414 if (align && i_shdrp->sh_addralign > 1)
3415 offset = BFD_ALIGN (offset, i_shdrp->sh_addralign);
252b5132
RH		 3416 i_shdrp->sh_offset = offset;
3417 if (i_shdrp->bfd_section != NULL)
3418 i_shdrp->bfd_section->filepos = offset;
3419 if (i_shdrp->sh_type != SHT_NOBITS)
3420 offset += i_shdrp->sh_size;
3421 return offset;
3422}
3423
3424/* Compute the file positions we are going to put the sections at, and
3425 otherwise prepare to begin writing out the ELF file. If LINK_INFO
3426 is not NULL, this is being called by the ELF backend linker. */
3427
b34976b6 3428bfd_boolean
217aa764
AM		 3429_bfd_elf_compute_section_file_positions (bfd *abfd,
3430 struct bfd_link_info *link_info)
252b5132 3431{
9c5bfbb7 3432 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
d4730f92 3433 struct fake_section_arg fsargs;
b34976b6 3434 bfd_boolean failed;
4b6c0f2f 3435 struct bfd_strtab_hash *strtab = NULL;
252b5132 3436 Elf_Internal_Shdr *shstrtab_hdr;
3516e984 3437 bfd_boolean need_symtab;
252b5132
RH		 3438
3439 if (abfd->output_has_begun)
b34976b6 3440 return TRUE;
252b5132
RH		 3441
3442 /* Do any elf backend specific processing first. */
3443 if (bed->elf_backend_begin_write_processing)
3444 (*bed->elf_backend_begin_write_processing) (abfd, link_info);
3445
3446 if (! prep_headers (abfd))
b34976b6 3447 return FALSE;
252b5132 3448
e6c51ed4
NC		 3449 /* Post process the headers if necessary. */
3450 if (bed->elf_backend_post_process_headers)
3451 (*bed->elf_backend_post_process_headers) (abfd, link_info);
3452
d4730f92
BS		 3453 fsargs.failed = FALSE;
3454 fsargs.link_info = link_info;
3455 bfd_map_over_sections (abfd, elf_fake_sections, &fsargs);
3456 if (fsargs.failed)
b34976b6 3457 return FALSE;
252b5132 3458
da9f89d4 3459 if (!assign_section_numbers (abfd, link_info))
b34976b6 3460 return FALSE;
252b5132
RH		 3461
3462 /* The backend linker builds symbol table information itself. */
3516e984
L		 3463 need_symtab = (link_info == NULL
3464 && (bfd_get_symcount (abfd) > 0
3465 || ((abfd->flags & (EXEC_P | DYNAMIC | HAS_RELOC))
3466 == HAS_RELOC)));
3467 if (need_symtab)
252b5132
RH		 3468 {
3469 /* Non-zero if doing a relocatable link. */
3470 int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC));
3471
3472 if (! swap_out_syms (abfd, &strtab, relocatable_p))
b34976b6 3473 return FALSE;
252b5132
RH		 3474 }
3475
d4730f92 3476 failed = FALSE;
1126897b 3477 if (link_info == NULL)
dbb410c3 3478 {
1126897b 3479 bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed);
dbb410c3 3480 if (failed)
b34976b6 3481 return FALSE;
dbb410c3
AM		 3482 }
3483
252b5132
RH		 3484 shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr;
3485 /* sh_name was set in prep_headers. */
3486 shstrtab_hdr->sh_type = SHT_STRTAB;
3487 shstrtab_hdr->sh_flags = 0;
3488 shstrtab_hdr->sh_addr = 0;
2b0f7ef9 3489 shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd));
252b5132
RH		 3490 shstrtab_hdr->sh_entsize = 0;
3491 shstrtab_hdr->sh_link = 0;
3492 shstrtab_hdr->sh_info = 0;
3493 /* sh_offset is set in assign_file_positions_except_relocs. */
3494 shstrtab_hdr->sh_addralign = 1;
3495
c84fca4d 3496 if (!assign_file_positions_except_relocs (abfd, link_info))
b34976b6 3497 return FALSE;
252b5132 3498
3516e984 3499 if (need_symtab)
252b5132
RH		 3500 {
3501 file_ptr off;
3502 Elf_Internal_Shdr *hdr;
3503
3504 off = elf_tdata (abfd)->next_file_pos;
3505
3506 hdr = &elf_tdata (abfd)->symtab_hdr;
b34976b6 3507 off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
252b5132 3508
9ad5cbcf
AM		 3509 hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
3510 if (hdr->sh_size != 0)
b34976b6 3511 off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
9ad5cbcf 3512
252b5132 3513 hdr = &elf_tdata (abfd)->strtab_hdr;
b34976b6 3514 off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
252b5132
RH		 3515
3516 elf_tdata (abfd)->next_file_pos = off;
3517
3518 /* Now that we know where the .strtab section goes, write it
08a40648 3519 out. */
252b5132
RH		 3520 if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
3521 || ! _bfd_stringtab_emit (abfd, strtab))
b34976b6 3522 return FALSE;
252b5132
RH		 3523 _bfd_stringtab_free (strtab);
3524 }
3525
b34976b6 3526 abfd->output_has_begun = TRUE;
252b5132 3527
b34976b6 3528 return TRUE;
252b5132
RH		 3529}
3530
8ded5a0f
AM		 3531/* Make an initial estimate of the size of the program header. If we
3532 get the number wrong here, we'll redo section placement. */
3533
3534static bfd_size_type
3535get_program_header_size (bfd *abfd, struct bfd_link_info *info)
3536{
3537 size_t segs;
3538 asection *s;
2b05f1b7 3539 const struct elf_backend_data *bed;
8ded5a0f
AM		 3540
3541 /* Assume we will need exactly two PT_LOAD segments: one for text
3542 and one for data. */
3543 segs = 2;
3544
3545 s = bfd_get_section_by_name (abfd, ".interp");
3546 if (s != NULL && (s->flags & SEC_LOAD) != 0)
3547 {
3548 /* If we have a loadable interpreter section, we need a
3549 PT_INTERP segment. In this case, assume we also need a
3550 PT_PHDR segment, although that may not be true for all
3551 targets. */
3552 segs += 2;
3553 }
3554
3555 if (bfd_get_section_by_name (abfd, ".dynamic") != NULL)
3556 {
3557 /* We need a PT_DYNAMIC segment. */
3558 ++segs;
f210dcff 3559 }
08a40648 3560
ceae84aa 3561 if (info != NULL && info->relro)
f210dcff
L		 3562 {
3563 /* We need a PT_GNU_RELRO segment. */
3564 ++segs;
8ded5a0f
AM		 3565 }
3566
3567 if (elf_tdata (abfd)->eh_frame_hdr)
3568 {
3569 /* We need a PT_GNU_EH_FRAME segment. */
3570 ++segs;
3571 }
3572
2b05f1b7 3573 if (elf_tdata (abfd)->stack_flags)
8ded5a0f 3574 {
2b05f1b7
L		 3575 /* We need a PT_GNU_STACK segment. */
3576 ++segs;
3577 }
94b11780 3578
2b05f1b7
L		 3579 for (s = abfd->sections; s != NULL; s = s->next)
3580 {
8ded5a0f 3581 if ((s->flags & SEC_LOAD) != 0
0112cd26 3582 && CONST_STRNEQ (s->name, ".note"))
8ded5a0f
AM		 3583 {
3584 /* We need a PT_NOTE segment. */
3585 ++segs;
1c5265b5
JJ		 3586 /* Try to create just one PT_NOTE segment
3587 for all adjacent loadable .note* sections.
3588 gABI requires that within a PT_NOTE segment
3589 (and also inside of each SHT_NOTE section)
3590 each note is padded to a multiple of 4 size,
3591 so we check whether the sections are correctly
3592 aligned. */
3593 if (s->alignment_power == 2)
3594 while (s->next != NULL
3595 && s->next->alignment_power == 2
3596 && (s->next->flags & SEC_LOAD) != 0
3597 && CONST_STRNEQ (s->next->name, ".note"))
3598 s = s->next;
8ded5a0f
AM		 3599 }
3600 }
3601
3602 for (s = abfd->sections; s != NULL; s = s->next)
3603 {
3604 if (s->flags & SEC_THREAD_LOCAL)
3605 {
3606 /* We need a PT_TLS segment. */
3607 ++segs;
3608 break;
3609 }
3610 }
3611
3612 /* Let the backend count up any program headers it might need. */
2b05f1b7 3613 bed = get_elf_backend_data (abfd);
8ded5a0f
AM		 3614 if (bed->elf_backend_additional_program_headers)
3615 {
3616 int a;
3617
3618 a = (*bed->elf_backend_additional_program_headers) (abfd, info);
3619 if (a == -1)
3620 abort ();
3621 segs += a;
3622 }
3623
3624 return segs * bed->s->sizeof_phdr;
3625}
3626
2ea37f1c
NC		 3627/* Find the segment that contains the output_section of section. */
3628
3629Elf_Internal_Phdr *
3630_bfd_elf_find_segment_containing_section (bfd * abfd, asection * section)
3631{
3632 struct elf_segment_map *m;
3633 Elf_Internal_Phdr *p;
3634
3635 for (m = elf_tdata (abfd)->segment_map,
3636 p = elf_tdata (abfd)->phdr;
3637 m != NULL;
3638 m = m->next, p++)
3639 {
3640 int i;
3641
3642 for (i = m->count - 1; i >= 0; i--)
3643 if (m->sections[i] == section)
3644 return p;
3645 }
3646
3647 return NULL;
3648}
3649
252b5132
RH		 3650/* Create a mapping from a set of sections to a program segment. */
3651
217aa764
AM		 3652static struct elf_segment_map *
3653make_mapping (bfd *abfd,
3654 asection **sections,
3655 unsigned int from,
3656 unsigned int to,
3657 bfd_boolean phdr)
252b5132
RH		 3658{
3659 struct elf_segment_map *m;
3660 unsigned int i;
3661 asection **hdrpp;
dc810e39 3662 bfd_size_type amt;
252b5132 3663
dc810e39
AM		 3664 amt = sizeof (struct elf_segment_map);
3665 amt += (to - from - 1) * sizeof (asection *);
a50b1753 3666 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
252b5132
RH		 3667 if (m == NULL)
3668 return NULL;
3669 m->next = NULL;
3670 m->p_type = PT_LOAD;
3671 for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++)
3672 m->sections[i - from] = *hdrpp;
3673 m->count = to - from;
3674
3675 if (from == 0 && phdr)
3676 {
3677 /* Include the headers in the first PT_LOAD segment. */
3678 m->includes_filehdr = 1;
3679 m->includes_phdrs = 1;
3680 }
3681
3682 return m;
3683}
3684
229fcec5
MM		 3685/* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL
3686 on failure. */
3687
3688struct elf_segment_map *
3689_bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec)
3690{
3691 struct elf_segment_map *m;
3692
a50b1753
NC		 3693 m = (struct elf_segment_map *) bfd_zalloc (abfd,
3694 sizeof (struct elf_segment_map));
229fcec5
MM		 3695 if (m == NULL)
3696 return NULL;
3697 m->next = NULL;
3698 m->p_type = PT_DYNAMIC;
3699 m->count = 1;
3700 m->sections[0] = dynsec;
08a40648 3701
229fcec5
MM		 3702 return m;
3703}
3704
8ded5a0f 3705/* Possibly add or remove segments from the segment map. */
252b5132 3706
b34976b6 3707static bfd_boolean
3dea8fca
AM		 3708elf_modify_segment_map (bfd *abfd,
3709 struct bfd_link_info *info,
3710 bfd_boolean remove_empty_load)
252b5132 3711{
252e386e 3712 struct elf_segment_map **m;
8ded5a0f 3713 const struct elf_backend_data *bed;
252b5132 3714
8ded5a0f
AM		 3715 /* The placement algorithm assumes that non allocated sections are
3716 not in PT_LOAD segments. We ensure this here by removing such
3717 sections from the segment map. We also remove excluded
252e386e
AM		 3718 sections. Finally, any PT_LOAD segment without sections is
3719 removed. */
3720 m = &elf_tdata (abfd)->segment_map;
3721 while (*m)
8ded5a0f
AM		 3722 {
3723 unsigned int i, new_count;
252b5132 3724
252e386e 3725 for (new_count = 0, i = 0; i < (*m)->count; i++)
8ded5a0f 3726 {
252e386e
AM		 3727 if (((*m)->sections[i]->flags & SEC_EXCLUDE) == 0
3728 && (((*m)->sections[i]->flags & SEC_ALLOC) != 0
3729 || (*m)->p_type != PT_LOAD))
8ded5a0f 3730 {
252e386e
AM		 3731 (*m)->sections[new_count] = (*m)->sections[i];
3732 new_count++;
8ded5a0f
AM		 3733 }
3734 }
252e386e 3735 (*m)->count = new_count;
252b5132 3736
3dea8fca 3737 if (remove_empty_load && (*m)->p_type == PT_LOAD && (*m)->count == 0)
252e386e
AM		 3738 *m = (*m)->next;
3739 else
3740 m = &(*m)->next;
8ded5a0f 3741 }
252b5132 3742
8ded5a0f
AM		 3743 bed = get_elf_backend_data (abfd);
3744 if (bed->elf_backend_modify_segment_map != NULL)
252b5132 3745 {
252e386e 3746 if (!(*bed->elf_backend_modify_segment_map) (abfd, info))
8ded5a0f 3747 return FALSE;
252b5132 3748 }
252b5132 3749
8ded5a0f
AM		 3750 return TRUE;
3751}
252b5132 3752
8ded5a0f 3753/* Set up a mapping from BFD sections to program segments. */
252b5132 3754
8ded5a0f
AM		 3755bfd_boolean
3756_bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info)
3757{
3758 unsigned int count;
3759 struct elf_segment_map *m;
3760 asection **sections = NULL;
3761 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3dea8fca 3762 bfd_boolean no_user_phdrs;
252b5132 3763
3dea8fca 3764 no_user_phdrs = elf_tdata (abfd)->segment_map == NULL;
d324f6d6
RM		 3765
3766 if (info != NULL)
3767 info->user_phdrs = !no_user_phdrs;
3768
3dea8fca 3769 if (no_user_phdrs && bfd_count_sections (abfd) != 0)
252b5132 3770 {
8ded5a0f
AM		 3771 asection *s;
3772 unsigned int i;
3773 struct elf_segment_map *mfirst;
3774 struct elf_segment_map **pm;
3775 asection *last_hdr;
3776 bfd_vma last_size;
3777 unsigned int phdr_index;
3778 bfd_vma maxpagesize;
3779 asection **hdrpp;
3780 bfd_boolean phdr_in_segment = TRUE;
3781 bfd_boolean writable;
3782 int tls_count = 0;
3783 asection *first_tls = NULL;
3784 asection *dynsec, *eh_frame_hdr;
3785 bfd_size_type amt;
8d06853e 3786 bfd_vma addr_mask, wrap_to = 0;
252b5132 3787
8ded5a0f 3788 /* Select the allocated sections, and sort them. */
252b5132 3789
a50b1753
NC		 3790 sections = (asection **) bfd_malloc2 (bfd_count_sections (abfd),
3791 sizeof (asection *));
8ded5a0f 3792 if (sections == NULL)
252b5132 3793 goto error_return;
252b5132 3794
8d06853e
AM		 3795 /* Calculate top address, avoiding undefined behaviour of shift
3796 left operator when shift count is equal to size of type
3797 being shifted. */
3798 addr_mask = ((bfd_vma) 1 << (bfd_arch_bits_per_address (abfd) - 1)) - 1;
3799 addr_mask = (addr_mask << 1) + 1;
3800
8ded5a0f
AM		 3801 i = 0;
3802 for (s = abfd->sections; s != NULL; s = s->next)
3803 {
3804 if ((s->flags & SEC_ALLOC) != 0)
3805 {
3806 sections[i] = s;
3807 ++i;
8d06853e
AM		 3808 /* A wrapping section potentially clashes with header. */
3809 if (((s->lma + s->size) & addr_mask) < (s->lma & addr_mask))
3810 wrap_to = (s->lma + s->size) & addr_mask;
8ded5a0f
AM		 3811 }
3812 }
3813 BFD_ASSERT (i <= bfd_count_sections (abfd));
3814 count = i;
252b5132 3815
8ded5a0f 3816 qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections);
252b5132 3817
8ded5a0f 3818 /* Build the mapping. */
252b5132 3819
8ded5a0f
AM		 3820 mfirst = NULL;
3821 pm = &mfirst;
252b5132 3822
8ded5a0f
AM		 3823 /* If we have a .interp section, then create a PT_PHDR segment for
3824 the program headers and a PT_INTERP segment for the .interp
3825 section. */
3826 s = bfd_get_section_by_name (abfd, ".interp");
3827 if (s != NULL && (s->flags & SEC_LOAD) != 0)
3828 {
3829 amt = sizeof (struct elf_segment_map);
a50b1753 3830 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
8ded5a0f
AM		 3831 if (m == NULL)
3832 goto error_return;
3833 m->next = NULL;
3834 m->p_type = PT_PHDR;
3835 /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */
3836 m->p_flags = PF_R | PF_X;
3837 m->p_flags_valid = 1;
3838 m->includes_phdrs = 1;
252b5132 3839
8ded5a0f
AM		 3840 *pm = m;
3841 pm = &m->next;
252b5132 3842
8ded5a0f 3843 amt = sizeof (struct elf_segment_map);
a50b1753 3844 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
8ded5a0f
AM		 3845 if (m == NULL)
3846 goto error_return;
3847 m->next = NULL;
3848 m->p_type = PT_INTERP;
3849 m->count = 1;
3850 m->sections[0] = s;
3851
3852 *pm = m;
3853 pm = &m->next;
252b5132 3854 }
8ded5a0f
AM		 3855
3856 /* Look through the sections. We put sections in the same program
3857 segment when the start of the second section can be placed within
3858 a few bytes of the end of the first section. */
3859 last_hdr = NULL;
3860 last_size = 0;
3861 phdr_index = 0;
3862 maxpagesize = bed->maxpagesize;
3863 writable = FALSE;
3864 dynsec = bfd_get_section_by_name (abfd, ".dynamic");
3865 if (dynsec != NULL
3866 && (dynsec->flags & SEC_LOAD) == 0)
3867 dynsec = NULL;
3868
3869 /* Deal with -Ttext or something similar such that the first section
3870 is not adjacent to the program headers. This is an
3871 approximation, since at this point we don't know exactly how many
3872 program headers we will need. */
3873 if (count > 0)
252b5132 3874 {
8ded5a0f
AM		 3875 bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size;
3876
62d7a5f6 3877 if (phdr_size == (bfd_size_type) -1)
8ded5a0f
AM		 3878 phdr_size = get_program_header_size (abfd, info);
3879 if ((abfd->flags & D_PAGED) == 0
8d06853e
AM		 3880 || (sections[0]->lma & addr_mask) < phdr_size
3881 || ((sections[0]->lma & addr_mask) % maxpagesize
3882 < phdr_size % maxpagesize)
3883 || (sections[0]->lma & addr_mask & -maxpagesize) < wrap_to)
8ded5a0f 3884 phdr_in_segment = FALSE;
252b5132
RH		 3885 }
3886
8ded5a0f 3887 for (i = 0, hdrpp = sections; i < count; i++, hdrpp++)
252b5132 3888 {
8ded5a0f
AM		 3889 asection *hdr;
3890 bfd_boolean new_segment;
3891
3892 hdr = *hdrpp;
3893
3894 /* See if this section and the last one will fit in the same
3895 segment. */
3896
3897 if (last_hdr == NULL)
3898 {
3899 /* If we don't have a segment yet, then we don't need a new
3900 one (we build the last one after this loop). */
3901 new_segment = FALSE;
3902 }
3903 else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma)
3904 {
3905 /* If this section has a different relation between the
3906 virtual address and the load address, then we need a new
3907 segment. */
3908 new_segment = TRUE;
3909 }
b5599592
AM		 3910 else if (hdr->lma < last_hdr->lma + last_size
3911 || last_hdr->lma + last_size < last_hdr->lma)
3912 {
3913 /* If this section has a load address that makes it overlap
3914 the previous section, then we need a new segment. */
3915 new_segment = TRUE;
3916 }
39948a60
NC		 3917 /* In the next test we have to be careful when last_hdr->lma is close
3918 to the end of the address space. If the aligned address wraps
3919 around to the start of the address space, then there are no more
3920 pages left in memory and it is OK to assume that the current
3921 section can be included in the current segment. */
3922 else if ((BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) + maxpagesize
3923 > last_hdr->lma)
3924 && (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize) + maxpagesize
4ff73856 3925 <= hdr->lma))
8ded5a0f
AM		 3926 {
3927 /* If putting this section in this segment would force us to
3928 skip a page in the segment, then we need a new segment. */
3929 new_segment = TRUE;
3930 }
3931 else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0
3932 && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0)
3933 {
3934 /* We don't want to put a loadable section after a
3935 nonloadable section in the same segment.
3936 Consider .tbss sections as loadable for this purpose. */
3937 new_segment = TRUE;
3938 }
3939 else if ((abfd->flags & D_PAGED) == 0)
3940 {
3941 /* If the file is not demand paged, which means that we
3942 don't require the sections to be correctly aligned in the
3943 file, then there is no other reason for a new segment. */
3944 new_segment = FALSE;
3945 }
3946 else if (! writable
3947 && (hdr->flags & SEC_READONLY) == 0
8d06853e
AM		 3948 && (((last_hdr->lma + last_size - 1) & -maxpagesize)
3949 != (hdr->lma & -maxpagesize)))
8ded5a0f
AM		 3950 {
3951 /* We don't want to put a writable section in a read only
3952 segment, unless they are on the same page in memory
3953 anyhow. We already know that the last section does not
3954 bring us past the current section on the page, so the
3955 only case in which the new section is not on the same
3956 page as the previous section is when the previous section
3957 ends precisely on a page boundary. */
3958 new_segment = TRUE;
3959 }
3960 else
3961 {
3962 /* Otherwise, we can use the same segment. */
3963 new_segment = FALSE;
3964 }
3965
2889e75b 3966 /* Allow interested parties a chance to override our decision. */
ceae84aa
AM		 3967 if (last_hdr != NULL
3968 && info != NULL
3969 && info->callbacks->override_segment_assignment != NULL)
3970 new_segment
3971 = info->callbacks->override_segment_assignment (info, abfd, hdr,
3972 last_hdr,
3973 new_segment);
2889e75b 3974
8ded5a0f
AM		 3975 if (! new_segment)
3976 {
3977 if ((hdr->flags & SEC_READONLY) == 0)
3978 writable = TRUE;
3979 last_hdr = hdr;
3980 /* .tbss sections effectively have zero size. */
3981 if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD))
3982 != SEC_THREAD_LOCAL)
3983 last_size = hdr->size;
3984 else
3985 last_size = 0;
3986 continue;
3987 }
3988
3989 /* We need a new program segment. We must create a new program
3990 header holding all the sections from phdr_index until hdr. */
3991
3992 m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment);
3993 if (m == NULL)
3994 goto error_return;
3995
3996 *pm = m;
3997 pm = &m->next;
3998
252b5132 3999 if ((hdr->flags & SEC_READONLY) == 0)
b34976b6 4000 writable = TRUE;
8ded5a0f
AM		 4001 else
4002 writable = FALSE;
4003
baaff79e
JJ		 4004 last_hdr = hdr;
4005 /* .tbss sections effectively have zero size. */
e5caec89 4006 if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL)
eea6121a 4007 last_size = hdr->size;
baaff79e
JJ		 4008 else
4009 last_size = 0;
8ded5a0f
AM		 4010 phdr_index = i;
4011 phdr_in_segment = FALSE;
252b5132
RH		 4012 }
4013
86b2281f
AM		 4014 /* Create a final PT_LOAD program segment, but not if it's just
4015 for .tbss. */
4016 if (last_hdr != NULL
4017 && (i - phdr_index != 1
4018 || ((last_hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD))
4019 != SEC_THREAD_LOCAL)))
8ded5a0f
AM		 4020 {
4021 m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment);
4022 if (m == NULL)
4023 goto error_return;
252b5132 4024
8ded5a0f
AM		 4025 *pm = m;
4026 pm = &m->next;
4027 }
252b5132 4028
8ded5a0f
AM		 4029 /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */
4030 if (dynsec != NULL)
4031 {
4032 m = _bfd_elf_make_dynamic_segment (abfd, dynsec);
4033 if (m == NULL)
4034 goto error_return;
4035 *pm = m;
4036 pm = &m->next;
4037 }
252b5132 4038
1c5265b5
JJ		 4039 /* For each batch of consecutive loadable .note sections,
4040 add a PT_NOTE segment. We don't use bfd_get_section_by_name,
4041 because if we link together nonloadable .note sections and
4042 loadable .note sections, we will generate two .note sections
4043 in the output file. FIXME: Using names for section types is
4044 bogus anyhow. */
8ded5a0f
AM		 4045 for (s = abfd->sections; s != NULL; s = s->next)
4046 {
4047 if ((s->flags & SEC_LOAD) != 0
0112cd26 4048 && CONST_STRNEQ (s->name, ".note"))
8ded5a0f 4049 {
1c5265b5 4050 asection *s2;
91d6fa6a
NC		 4051
4052 count = 1;
8ded5a0f 4053 amt = sizeof (struct elf_segment_map);
1c5265b5
JJ		 4054 if (s->alignment_power == 2)
4055 for (s2 = s; s2->next != NULL; s2 = s2->next)
55b581a6
JJ		 4056 {
4057 if (s2->next->alignment_power == 2
4058 && (s2->next->flags & SEC_LOAD) != 0
4059 && CONST_STRNEQ (s2->next->name, ".note")
8d06853e
AM		 4060 && align_power (s2->lma + s2->size, 2)
4061 == s2->next->lma)
55b581a6
JJ		 4062 count++;
4063 else
4064 break;
4065 }
1c5265b5 4066 amt += (count - 1) * sizeof (asection *);
a50b1753 4067 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
8ded5a0f
AM		 4068 if (m == NULL)
4069 goto error_return;
4070 m->next = NULL;
4071 m->p_type = PT_NOTE;
1c5265b5
JJ		 4072 m->count = count;
4073 while (count > 1)
4074 {
4075 m->sections[m->count - count--] = s;
4076 BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0);
4077 s = s->next;
4078 }
4079 m->sections[m->count - 1] = s;
4080 BFD_ASSERT ((s->flags & SEC_THREAD_LOCAL) == 0);
8ded5a0f
AM		 4081 *pm = m;
4082 pm = &m->next;
4083 }
4084 if (s->flags & SEC_THREAD_LOCAL)
4085 {
4086 if (! tls_count)
4087 first_tls = s;
4088 tls_count++;
4089 }
4090 }
252b5132 4091
8ded5a0f
AM		 4092 /* If there are any SHF_TLS output sections, add PT_TLS segment. */
4093 if (tls_count > 0)
4094 {
8ded5a0f
AM		 4095 amt = sizeof (struct elf_segment_map);
4096 amt += (tls_count - 1) * sizeof (asection *);
a50b1753 4097 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
8ded5a0f
AM		 4098 if (m == NULL)
4099 goto error_return;
4100 m->next = NULL;
4101 m->p_type = PT_TLS;
4102 m->count = tls_count;
4103 /* Mandated PF_R. */
4104 m->p_flags = PF_R;
4105 m->p_flags_valid = 1;
91d6fa6a 4106 for (i = 0; i < (unsigned int) tls_count; ++i)
8ded5a0f
AM		 4107 {
4108 BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL);
4109 m->sections[i] = first_tls;
4110 first_tls = first_tls->next;
4111 }
252b5132 4112
8ded5a0f
AM		 4113 *pm = m;
4114 pm = &m->next;
4115 }
252b5132 4116
8ded5a0f
AM		 4117 /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME
4118 segment. */
4119 eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr;
4120 if (eh_frame_hdr != NULL
4121 && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0)
252b5132 4122 {
dc810e39 4123 amt = sizeof (struct elf_segment_map);
a50b1753 4124 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
252b5132
RH		 4125 if (m == NULL)
4126 goto error_return;
4127 m->next = NULL;
8ded5a0f 4128 m->p_type = PT_GNU_EH_FRAME;
252b5132 4129 m->count = 1;
8ded5a0f 4130 m->sections[0] = eh_frame_hdr->output_section;
252b5132
RH		 4131
4132 *pm = m;
4133 pm = &m->next;
4134 }
13ae64f3 4135
8ded5a0f 4136 if (elf_tdata (abfd)->stack_flags)
13ae64f3 4137 {
8ded5a0f 4138 amt = sizeof (struct elf_segment_map);
a50b1753 4139 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
8ded5a0f
AM		 4140 if (m == NULL)
4141 goto error_return;
4142 m->next = NULL;
2b05f1b7 4143 m->p_type = PT_GNU_STACK;
8ded5a0f
AM		 4144 m->p_flags = elf_tdata (abfd)->stack_flags;
4145 m->p_flags_valid = 1;
252b5132 4146
8ded5a0f
AM		 4147 *pm = m;
4148 pm = &m->next;
4149 }
65765700 4150
ceae84aa 4151 if (info != NULL && info->relro)
8ded5a0f 4152 {
f210dcff
L		 4153 for (m = mfirst; m != NULL; m = m->next)
4154 {
3832a4d8
AM		 4155 if (m->p_type == PT_LOAD
4156 && m->count != 0
4157 && m->sections[0]->vma >= info->relro_start
4158 && m->sections[0]->vma < info->relro_end)
f210dcff 4159 {
3832a4d8
AM		 4160 i = m->count;
4161 while (--i != (unsigned) -1)
4162 if ((m->sections[i]->flags & (SEC_LOAD | SEC_HAS_CONTENTS))
4163 == (SEC_LOAD | SEC_HAS_CONTENTS))
4164 break;
4165
4166 if (i == (unsigned) -1)
4167 continue;
65765700 4168
3832a4d8
AM		 4169 if (m->sections[i]->vma + m->sections[i]->size
4170 >= info->relro_end)
f210dcff
L		 4171 break;
4172 }
be01b344 4173 }
f210dcff
L		 4174
4175 /* Make a PT_GNU_RELRO segment only when it isn't empty. */
4176 if (m != NULL)
4177 {
4178 amt = sizeof (struct elf_segment_map);
a50b1753 4179 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
f210dcff
L		 4180 if (m == NULL)
4181 goto error_return;
4182 m->next = NULL;
4183 m->p_type = PT_GNU_RELRO;
4184 m->p_flags = PF_R;
4185 m->p_flags_valid = 1;
4186
4187 *pm = m;
4188 pm = &m->next;
4189 }
8ded5a0f 4190 }
9ee5e499 4191
8ded5a0f
AM		 4192 free (sections);
4193 elf_tdata (abfd)->segment_map = mfirst;
9ee5e499
JJ		 4194 }
4195
3dea8fca 4196 if (!elf_modify_segment_map (abfd, info, no_user_phdrs))
8ded5a0f 4197 return FALSE;
8c37241b 4198
8ded5a0f
AM		 4199 for (count = 0, m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
4200 ++count;
4201 elf_tdata (abfd)->program_header_size = count * bed->s->sizeof_phdr;
252b5132 4202
b34976b6 4203 return TRUE;
252b5132
RH		 4204
4205 error_return:
4206 if (sections != NULL)
4207 free (sections);
b34976b6 4208 return FALSE;
252b5132
RH		 4209}
4210
4211/* Sort sections by address. */
4212
4213static int
217aa764 4214elf_sort_sections (const void *arg1, const void *arg2)
252b5132
RH		 4215{
4216 const asection *sec1 = *(const asection **) arg1;
4217 const asection *sec2 = *(const asection **) arg2;
eecdbe52 4218 bfd_size_type size1, size2;
252b5132
RH		 4219
4220 /* Sort by LMA first, since this is the address used to
4221 place the section into a segment. */
4222 if (sec1->lma < sec2->lma)
4223 return -1;
4224 else if (sec1->lma > sec2->lma)
4225 return 1;
4226
4227 /* Then sort by VMA. Normally the LMA and the VMA will be
4228 the same, and this will do nothing. */
4229 if (sec1->vma < sec2->vma)
4230 return -1;
4231 else if (sec1->vma > sec2->vma)
4232 return 1;
4233
4234 /* Put !SEC_LOAD sections after SEC_LOAD ones. */
4235
07c6e936 4236#define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0)
252b5132
RH		 4237
4238 if (TOEND (sec1))
4239 {
4240 if (TOEND (sec2))
00a7cdc5
NC		 4241 {
4242 /* If the indicies are the same, do not return 0
4243 here, but continue to try the next comparison. */
4244 if (sec1->target_index - sec2->target_index != 0)
4245 return sec1->target_index - sec2->target_index;
4246 }
252b5132
RH		 4247 else
4248 return 1;
4249 }
00a7cdc5 4250 else if (TOEND (sec2))
252b5132
RH		 4251 return -1;
4252
4253#undef TOEND
4254
00a7cdc5
NC		 4255 /* Sort by size, to put zero sized sections
4256 before others at the same address. */
252b5132 4257
eea6121a
AM		 4258 size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0;
4259 size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0;
eecdbe52
JJ		 4260
4261 if (size1 < size2)
252b5132 4262 return -1;
eecdbe52 4263 if (size1 > size2)
252b5132
RH		 4264 return 1;
4265
4266 return sec1->target_index - sec2->target_index;
4267}
4268
340b6d91
AC		 4269/* Ian Lance Taylor writes:
4270
4271 We shouldn't be using % with a negative signed number. That's just
4272 not good. We have to make sure either that the number is not
4273 negative, or that the number has an unsigned type. When the types
4274 are all the same size they wind up as unsigned. When file_ptr is a
4275 larger signed type, the arithmetic winds up as signed long long,
4276 which is wrong.
4277
4278 What we're trying to say here is something like ``increase OFF by
4279 the least amount that will cause it to be equal to the VMA modulo
4280 the page size.'' */
4281/* In other words, something like:
4282
4283 vma_offset = m->sections[0]->vma % bed->maxpagesize;
4284 off_offset = off % bed->maxpagesize;
4285 if (vma_offset < off_offset)
4286 adjustment = vma_offset + bed->maxpagesize - off_offset;
4287 else
4288 adjustment = vma_offset - off_offset;
08a40648 4289
340b6d91
AC		 4290 which can can be collapsed into the expression below. */
4291
4292static file_ptr
4293vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize)
4294{
4295 return ((vma - off) % maxpagesize);
4296}
4297
6d33f217
L		 4298static void
4299print_segment_map (const struct elf_segment_map *m)
4300{
4301 unsigned int j;
4302 const char *pt = get_segment_type (m->p_type);
4303 char buf[32];
4304
4305 if (pt == NULL)
4306 {
4307 if (m->p_type >= PT_LOPROC && m->p_type <= PT_HIPROC)
4308 sprintf (buf, "LOPROC+%7.7x",
4309 (unsigned int) (m->p_type - PT_LOPROC));
4310 else if (m->p_type >= PT_LOOS && m->p_type <= PT_HIOS)
4311 sprintf (buf, "LOOS+%7.7x",
4312 (unsigned int) (m->p_type - PT_LOOS));
4313 else
4314 snprintf (buf, sizeof (buf), "%8.8x",
4315 (unsigned int) m->p_type);
4316 pt = buf;
4317 }
4a97a0e5 4318 fflush (stdout);
6d33f217
L		 4319 fprintf (stderr, "%s:", pt);
4320 for (j = 0; j < m->count; j++)
4321 fprintf (stderr, " %s", m->sections [j]->name);
4322 putc ('\n',stderr);
4a97a0e5 4323 fflush (stderr);
6d33f217
L		 4324}
4325
32812159
AM		 4326static bfd_boolean
4327write_zeros (bfd *abfd, file_ptr pos, bfd_size_type len)
4328{
4329 void *buf;
4330 bfd_boolean ret;
4331
4332 if (bfd_seek (abfd, pos, SEEK_SET) != 0)
4333 return FALSE;
4334 buf = bfd_zmalloc (len);
4335 if (buf == NULL)
4336 return FALSE;
4337 ret = bfd_bwrite (buf, len, abfd) == len;
4338 free (buf);
4339 return ret;
4340}
4341
252b5132
RH		 4342/* Assign file positions to the sections based on the mapping from
4343 sections to segments. This function also sets up some fields in
f3520d2f 4344 the file header. */
252b5132 4345
b34976b6 4346static bfd_boolean
f3520d2f
AM		 4347assign_file_positions_for_load_sections (bfd *abfd,
4348 struct bfd_link_info *link_info)
252b5132
RH		 4349{
4350 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
252b5132 4351 struct elf_segment_map *m;
252b5132 4352 Elf_Internal_Phdr *phdrs;
252b5132 4353 Elf_Internal_Phdr *p;
02bf8d82 4354 file_ptr off;
3f570048 4355 bfd_size_type maxpagesize;
f3520d2f 4356 unsigned int alloc;
0920dee7 4357 unsigned int i, j;
2b0bc088 4358 bfd_vma header_pad = 0;
252b5132 4359
e36284ab 4360 if (link_info == NULL
ceae84aa 4361 && !_bfd_elf_map_sections_to_segments (abfd, link_info))
8ded5a0f 4362 return FALSE;
252b5132 4363
8ded5a0f 4364 alloc = 0;
252b5132 4365 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
2b0bc088
NC		 4366 {
4367 ++alloc;
4368 if (m->header_size)
4369 header_pad = m->header_size;
4370 }
252b5132 4371
82f2dbf7
NC		 4372 if (alloc)
4373 {
4374 elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr;
4375 elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr;
4376 }
4377 else
4378 {
4379 /* PR binutils/12467. */
4380 elf_elfheader (abfd)->e_phoff = 0;
4381 elf_elfheader (abfd)->e_phentsize = 0;
4382 }
d324f6d6 4383
8ded5a0f 4384 elf_elfheader (abfd)->e_phnum = alloc;
252b5132 4385
62d7a5f6 4386 if (elf_tdata (abfd)->program_header_size == (bfd_size_type) -1)
8ded5a0f
AM		 4387 elf_tdata (abfd)->program_header_size = alloc * bed->s->sizeof_phdr;
4388 else
4389 BFD_ASSERT (elf_tdata (abfd)->program_header_size
59e0647f 4390 >= alloc * bed->s->sizeof_phdr);
252b5132
RH		 4391
4392 if (alloc == 0)
f3520d2f 4393 {
8ded5a0f
AM		 4394 elf_tdata (abfd)->next_file_pos = bed->s->sizeof_ehdr;
4395 return TRUE;
f3520d2f 4396 }
252b5132 4397
57268894
HPN		 4398 /* We're writing the size in elf_tdata (abfd)->program_header_size,
4399 see assign_file_positions_except_relocs, so make sure we have
4400 that amount allocated, with trailing space cleared.
4401 The variable alloc contains the computed need, while elf_tdata
4402 (abfd)->program_header_size contains the size used for the
4403 layout.
4404 See ld/emultempl/elf-generic.em:gld${EMULATION_NAME}_map_segments
4405 where the layout is forced to according to a larger size in the
4406 last iterations for the testcase ld-elf/header. */
4407 BFD_ASSERT (elf_tdata (abfd)->program_header_size % bed->s->sizeof_phdr
4408 == 0);
a50b1753
NC		 4409 phdrs = (Elf_Internal_Phdr *)
4410 bfd_zalloc2 (abfd,
4411 (elf_tdata (abfd)->program_header_size / bed->s->sizeof_phdr),
4412 sizeof (Elf_Internal_Phdr));
f3520d2f 4413 elf_tdata (abfd)->phdr = phdrs;
252b5132 4414 if (phdrs == NULL)
b34976b6 4415 return FALSE;
252b5132 4416
3f570048
AM		 4417 maxpagesize = 1;
4418 if ((abfd->flags & D_PAGED) != 0)
4419 maxpagesize = bed->maxpagesize;
4420
252b5132
RH		 4421 off = bed->s->sizeof_ehdr;
4422 off += alloc * bed->s->sizeof_phdr;
2b0bc088
NC		 4423 if (header_pad < (bfd_vma) off)
4424 header_pad = 0;
4425 else
4426 header_pad -= off;
4427 off += header_pad;
252b5132 4428
0920dee7 4429 for (m = elf_tdata (abfd)->segment_map, p = phdrs, j = 0;
252b5132 4430 m != NULL;
0920dee7 4431 m = m->next, p++, j++)
252b5132 4432 {
252b5132 4433 asection **secpp;
bf988460
AM		 4434 bfd_vma off_adjust;
4435 bfd_boolean no_contents;
252b5132
RH		 4436
4437 /* If elf_segment_map is not from map_sections_to_segments, the
08a40648 4438 sections may not be correctly ordered. NOTE: sorting should
52e9b619
MS		 4439 not be done to the PT_NOTE section of a corefile, which may
4440 contain several pseudo-sections artificially created by bfd.
4441 Sorting these pseudo-sections breaks things badly. */
47d9a591
AM		 4442 if (m->count > 1
4443 && !(elf_elfheader (abfd)->e_type == ET_CORE
52e9b619 4444 && m->p_type == PT_NOTE))
252b5132
RH		 4445 qsort (m->sections, (size_t) m->count, sizeof (asection *),
4446 elf_sort_sections);
4447
b301b248
AM		 4448 /* An ELF segment (described by Elf_Internal_Phdr) may contain a
4449 number of sections with contents contributing to both p_filesz
4450 and p_memsz, followed by a number of sections with no contents
4451 that just contribute to p_memsz. In this loop, OFF tracks next
02bf8d82 4452 available file offset for PT_LOAD and PT_NOTE segments. */
252b5132 4453 p->p_type = m->p_type;
28a7f3e7 4454 p->p_flags = m->p_flags;
252b5132 4455
3f570048
AM		 4456 if (m->count == 0)
4457 p->p_vaddr = 0;
4458 else
3271a814 4459 p->p_vaddr = m->sections[0]->vma - m->p_vaddr_offset;
3f570048
AM		 4460
4461 if (m->p_paddr_valid)
4462 p->p_paddr = m->p_paddr;
4463 else if (m->count == 0)
4464 p->p_paddr = 0;
4465 else
08a40648 4466 p->p_paddr = m->sections[0]->lma - m->p_vaddr_offset;
3f570048
AM		 4467
4468 if (p->p_type == PT_LOAD
4469 && (abfd->flags & D_PAGED) != 0)
4470 {
4471 /* p_align in demand paged PT_LOAD segments effectively stores
4472 the maximum page size. When copying an executable with
4473 objcopy, we set m->p_align from the input file. Use this
4474 value for maxpagesize rather than bed->maxpagesize, which
4475 may be different. Note that we use maxpagesize for PT_TLS
4476 segment alignment later in this function, so we are relying
4477 on at least one PT_LOAD segment appearing before a PT_TLS
4478 segment. */
4479 if (m->p_align_valid)
4480 maxpagesize = m->p_align;
4481
4482 p->p_align = maxpagesize;
4483 }
3271a814
NS		 4484 else if (m->p_align_valid)
4485 p->p_align = m->p_align;
e970b90a
DJ		 4486 else if (m->count == 0)
4487 p->p_align = 1 << bed->s->log_file_align;
3f570048
AM		 4488 else
4489 p->p_align = 0;
4490
bf988460
AM		 4491 no_contents = FALSE;
4492 off_adjust = 0;
252b5132 4493 if (p->p_type == PT_LOAD
b301b248 4494 && m->count > 0)
252b5132 4495 {
b301b248 4496 bfd_size_type align;
a49e53ed 4497 unsigned int align_power = 0;
b301b248 4498
3271a814
NS		 4499 if (m->p_align_valid)
4500 align = p->p_align;
4501 else
252b5132 4502 {
3271a814
NS		 4503 for (i = 0, secpp = m->sections; i < m->count; i++, secpp++)
4504 {
4505 unsigned int secalign;
08a40648 4506
3271a814
NS		 4507 secalign = bfd_get_section_alignment (abfd, *secpp);
4508 if (secalign > align_power)
4509 align_power = secalign;
4510 }
4511 align = (bfd_size_type) 1 << align_power;
4512 if (align < maxpagesize)
4513 align = maxpagesize;
b301b248 4514 }
252b5132 4515
02bf8d82
AM		 4516 for (i = 0; i < m->count; i++)
4517 if ((m->sections[i]->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
4518 /* If we aren't making room for this section, then
4519 it must be SHT_NOBITS regardless of what we've
4520 set via struct bfd_elf_special_section. */
4521 elf_section_type (m->sections[i]) = SHT_NOBITS;
4522
bf988460 4523 /* Find out whether this segment contains any loadable
aea274d3
AM		 4524 sections. */
4525 no_contents = TRUE;
4526 for (i = 0; i < m->count; i++)
4527 if (elf_section_type (m->sections[i]) != SHT_NOBITS)
4528 {
4529 no_contents = FALSE;
4530 break;
4531 }
bf988460 4532
85cfcbfb 4533 off_adjust = vma_page_aligned_bias (p->p_vaddr, off, align);
bf988460
AM		 4534 off += off_adjust;
4535 if (no_contents)
4536 {
4537 /* We shouldn't need to align the segment on disk since
4538 the segment doesn't need file space, but the gABI
4539 arguably requires the alignment and glibc ld.so
4540 checks it. So to comply with the alignment
4541 requirement but not waste file space, we adjust
4542 p_offset for just this segment. (OFF_ADJUST is
4543 subtracted from OFF later.) This may put p_offset
4544 past the end of file, but that shouldn't matter. */
4545 }
4546 else
4547 off_adjust = 0;
252b5132 4548 }
b1a6d0b1
NC		 4549 /* Make sure the .dynamic section is the first section in the
4550 PT_DYNAMIC segment. */
4551 else if (p->p_type == PT_DYNAMIC
4552 && m->count > 1
4553 && strcmp (m->sections[0]->name, ".dynamic") != 0)
4554 {
4555 _bfd_error_handler
b301b248
AM		 4556 (_("%B: The first section in the PT_DYNAMIC segment is not the .dynamic section"),
4557 abfd);
b1a6d0b1
NC		 4558 bfd_set_error (bfd_error_bad_value);
4559 return FALSE;
4560 }
3f001e84
JK		 4561 /* Set the note section type to SHT_NOTE. */
4562 else if (p->p_type == PT_NOTE)
4563 for (i = 0; i < m->count; i++)
4564 elf_section_type (m->sections[i]) = SHT_NOTE;
252b5132 4565
252b5132
RH		 4566 p->p_offset = 0;
4567 p->p_filesz = 0;
4568 p->p_memsz = 0;
4569
4570 if (m->includes_filehdr)
4571 {
bf988460 4572 if (!m->p_flags_valid)
252b5132 4573 p->p_flags |= PF_R;
252b5132
RH		 4574 p->p_filesz = bed->s->sizeof_ehdr;
4575 p->p_memsz = bed->s->sizeof_ehdr;
4576 if (m->count > 0)
4577 {
252b5132
RH		 4578 if (p->p_vaddr < (bfd_vma) off)
4579 {
caf47ea6 4580 (*_bfd_error_handler)
b301b248
AM		 4581 (_("%B: Not enough room for program headers, try linking with -N"),
4582 abfd);
252b5132 4583 bfd_set_error (bfd_error_bad_value);
b34976b6 4584 return FALSE;
252b5132
RH		 4585 }
4586
4587 p->p_vaddr -= off;
bf988460 4588 if (!m->p_paddr_valid)
252b5132
RH		 4589 p->p_paddr -= off;
4590 }
252b5132
RH		 4591 }
4592
4593 if (m->includes_phdrs)
4594 {
bf988460 4595 if (!m->p_flags_valid)
252b5132
RH		 4596 p->p_flags |= PF_R;
4597
f3520d2f 4598 if (!m->includes_filehdr)
252b5132
RH		 4599 {
4600 p->p_offset = bed->s->sizeof_ehdr;
4601
4602 if (m->count > 0)
4603 {
252b5132 4604 p->p_vaddr -= off - p->p_offset;
bf988460 4605 if (!m->p_paddr_valid)
252b5132
RH		 4606 p->p_paddr -= off - p->p_offset;
4607 }
252b5132
RH		 4608 }
4609
4610 p->p_filesz += alloc * bed->s->sizeof_phdr;
4611 p->p_memsz += alloc * bed->s->sizeof_phdr;
2b0bc088
NC		 4612 if (m->count)
4613 {
4614 p->p_filesz += header_pad;
4615 p->p_memsz += header_pad;
4616 }
252b5132
RH		 4617 }
4618
4619 if (p->p_type == PT_LOAD
4620 || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core))
4621 {
bf988460 4622 if (!m->includes_filehdr && !m->includes_phdrs)
02bf8d82 4623 p->p_offset = off;
252b5132
RH		 4624 else
4625 {
4626 file_ptr adjust;
4627
4628 adjust = off - (p->p_offset + p->p_filesz);
bf988460
AM		 4629 if (!no_contents)
4630 p->p_filesz += adjust;
252b5132
RH		 4631 p->p_memsz += adjust;
4632 }
4633 }
4634
1ea63fd2
AM		 4635 /* Set up p_filesz, p_memsz, p_align and p_flags from the section
4636 maps. Set filepos for sections in PT_LOAD segments, and in
4637 core files, for sections in PT_NOTE segments.
4638 assign_file_positions_for_non_load_sections will set filepos
4639 for other sections and update p_filesz for other segments. */
252b5132
RH		 4640 for (i = 0, secpp = m->sections; i < m->count; i++, secpp++)
4641 {
4642 asection *sec;
252b5132 4643 bfd_size_type align;
627b32bc 4644 Elf_Internal_Shdr *this_hdr;
252b5132
RH		 4645
4646 sec = *secpp;
02bf8d82 4647 this_hdr = &elf_section_data (sec)->this_hdr;
3f570048 4648 align = (bfd_size_type) 1 << bfd_get_section_alignment (abfd, sec);
252b5132 4649
88967714
AM		 4650 if ((p->p_type == PT_LOAD
4651 || p->p_type == PT_TLS)
4652 && (this_hdr->sh_type != SHT_NOBITS
4653 || ((this_hdr->sh_flags & SHF_ALLOC) != 0
4654 && ((this_hdr->sh_flags & SHF_TLS) == 0
4655 || p->p_type == PT_TLS))))
252b5132 4656 {
b5599592
AM		 4657 bfd_vma p_start = p->p_paddr;
4658 bfd_vma p_end = p_start + p->p_memsz;
4659 bfd_vma s_start = sec->lma;
4660 bfd_vma adjust = s_start - p_end;
252b5132 4661
a2d1e028
L		 4662 if (adjust != 0
4663 && (s_start < p_end
4664 || p_end < p_start))
252b5132 4665 {
88967714 4666 (*_bfd_error_handler)
b5599592
AM		 4667 (_("%B: section %A lma %#lx adjusted to %#lx"), abfd, sec,
4668 (unsigned long) s_start, (unsigned long) p_end);
88967714 4669 adjust = 0;
b5599592 4670 sec->lma = p_end;
1cfb7d1e 4671 }
3ac9b6c9 4672 p->p_memsz += adjust;
1cfb7d1e 4673
88967714
AM		 4674 if (this_hdr->sh_type != SHT_NOBITS)
4675 {
32812159
AM		 4676 if (p->p_filesz + adjust < p->p_memsz)
4677 {
4678 /* We have a PROGBITS section following NOBITS ones.
4679 Allocate file space for the NOBITS section(s) and
4680 zero it. */
4681 adjust = p->p_memsz - p->p_filesz;
4682 if (!write_zeros (abfd, off, adjust))
4683 return FALSE;
4684 }
88967714
AM		 4685 off += adjust;
4686 p->p_filesz += adjust;
252b5132 4687 }
252b5132
RH		 4688 }
4689
4690 if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)
4691 {
b301b248
AM		 4692 /* The section at i == 0 is the one that actually contains
4693 everything. */
4a938328
MS		 4694 if (i == 0)
4695 {
627b32bc 4696 this_hdr->sh_offset = sec->filepos = off;
6a3cd2b4
AM		 4697 off += this_hdr->sh_size;
4698 p->p_filesz = this_hdr->sh_size;
b301b248
AM		 4699 p->p_memsz = 0;
4700 p->p_align = 1;
252b5132 4701 }
4a938328 4702 else
252b5132 4703 {
b301b248 4704 /* The rest are fake sections that shouldn't be written. */
252b5132 4705 sec->filepos = 0;
eea6121a 4706 sec->size = 0;
b301b248
AM		 4707 sec->flags = 0;
4708 continue;
252b5132 4709 }
252b5132
RH		 4710 }
4711 else
4712 {
1e951488 4713 if (p->p_type == PT_LOAD)
b301b248 4714 {
1e951488
AM		 4715 this_hdr->sh_offset = sec->filepos = off;
4716 if (this_hdr->sh_type != SHT_NOBITS)
4717 off += this_hdr->sh_size;
4718 }
4719 else if (this_hdr->sh_type == SHT_NOBITS
4720 && (this_hdr->sh_flags & SHF_TLS) != 0
4721 && this_hdr->sh_offset == 0)
4722 {
4723 /* This is a .tbss section that didn't get a PT_LOAD.
4724 (See _bfd_elf_map_sections_to_segments "Create a
4725 final PT_LOAD".) Set sh_offset to the value it
4726 would have if we had created a zero p_filesz and
4727 p_memsz PT_LOAD header for the section. This
4728 also makes the PT_TLS header have the same
4729 p_offset value. */
4730 bfd_vma adjust = vma_page_aligned_bias (this_hdr->sh_addr,
4731 off, align);
4732 this_hdr->sh_offset = sec->filepos = off + adjust;
b301b248 4733 }
252b5132 4734
02bf8d82 4735 if (this_hdr->sh_type != SHT_NOBITS)
b301b248 4736 {
6a3cd2b4 4737 p->p_filesz += this_hdr->sh_size;
02bf8d82
AM		 4738 /* A load section without SHF_ALLOC is something like
4739 a note section in a PT_NOTE segment. These take
4740 file space but are not loaded into memory. */
4741 if ((this_hdr->sh_flags & SHF_ALLOC) != 0)
6a3cd2b4 4742 p->p_memsz += this_hdr->sh_size;
b301b248 4743 }
6a3cd2b4 4744 else if ((this_hdr->sh_flags & SHF_ALLOC) != 0)
13ae64f3 4745 {
6a3cd2b4
AM		 4746 if (p->p_type == PT_TLS)
4747 p->p_memsz += this_hdr->sh_size;
4748
4749 /* .tbss is special. It doesn't contribute to p_memsz of
4750 normal segments. */
4751 else if ((this_hdr->sh_flags & SHF_TLS) == 0)
4752 p->p_memsz += this_hdr->sh_size;
13ae64f3
JJ		 4753 }
4754
b10a8ae0
L		 4755 if (align > p->p_align
4756 && !m->p_align_valid
4757 && (p->p_type != PT_LOAD
4758 || (abfd->flags & D_PAGED) == 0))
252b5132
RH		 4759 p->p_align = align;
4760 }
4761
bf988460 4762 if (!m->p_flags_valid)
252b5132
RH		 4763 {
4764 p->p_flags |= PF_R;
02bf8d82 4765 if ((this_hdr->sh_flags & SHF_EXECINSTR) != 0)
252b5132 4766 p->p_flags |= PF_X;
02bf8d82 4767 if ((this_hdr->sh_flags & SHF_WRITE) != 0)
252b5132
RH		 4768 p->p_flags |= PF_W;
4769 }
4770 }
bf988460 4771 off -= off_adjust;
0920dee7 4772
7c928300
AM		 4773 /* Check that all sections are in a PT_LOAD segment.
4774 Don't check funky gdb generated core files. */
4775 if (p->p_type == PT_LOAD && bfd_get_format (abfd) != bfd_core)
9a83a553
AM		 4776 {
4777 bfd_boolean check_vma = TRUE;
4778
4779 for (i = 1; i < m->count; i++)
4780 if (m->sections[i]->vma == m->sections[i - 1]->vma
4781 && ELF_SECTION_SIZE (&(elf_section_data (m->sections[i])
4782 ->this_hdr), p) != 0
4783 && ELF_SECTION_SIZE (&(elf_section_data (m->sections[i - 1])
4784 ->this_hdr), p) != 0)
0920dee7 4785 {
9a83a553
AM		 4786 /* Looks like we have overlays packed into the segment. */
4787 check_vma = FALSE;
4788 break;
0920dee7 4789 }
9a83a553
AM		 4790
4791 for (i = 0; i < m->count; i++)
4792 {
4793 Elf_Internal_Shdr *this_hdr;
4794 asection *sec;
4795
4796 sec = m->sections[i];
4797 this_hdr = &(elf_section_data(sec)->this_hdr);
86b2281f
AM		 4798 if (!ELF_SECTION_IN_SEGMENT_1 (this_hdr, p, check_vma, 0)
4799 && !ELF_TBSS_SPECIAL (this_hdr, p))
9a83a553
AM		 4800 {
4801 (*_bfd_error_handler)
4802 (_("%B: section `%A' can't be allocated in segment %d"),
4803 abfd, sec, j);
4804 print_segment_map (m);
4805 }
4806 }
4807 }
252b5132
RH		 4808 }
4809
f3520d2f
AM		 4810 elf_tdata (abfd)->next_file_pos = off;
4811 return TRUE;
4812}
4813
4814/* Assign file positions for the other sections. */
4815
4816static bfd_boolean
4817assign_file_positions_for_non_load_sections (bfd *abfd,
4818 struct bfd_link_info *link_info)
4819{
4820 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
4821 Elf_Internal_Shdr **i_shdrpp;
4822 Elf_Internal_Shdr **hdrpp;
4823 Elf_Internal_Phdr *phdrs;
4824 Elf_Internal_Phdr *p;
4825 struct elf_segment_map *m;
62655c7b 4826 struct elf_segment_map *hdrs_segment;
f3520d2f
AM		 4827 bfd_vma filehdr_vaddr, filehdr_paddr;
4828 bfd_vma phdrs_vaddr, phdrs_paddr;
4829 file_ptr off;
4830 unsigned int num_sec;
4831 unsigned int i;
4832 unsigned int count;
4833
5c182d5f
AM		 4834 i_shdrpp = elf_elfsections (abfd);
4835 num_sec = elf_numsections (abfd);
f3520d2f 4836 off = elf_tdata (abfd)->next_file_pos;
5c182d5f
AM		 4837 for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++)
4838 {
4839 struct elf_obj_tdata *tdata = elf_tdata (abfd);
4840 Elf_Internal_Shdr *hdr;
4841
4842 hdr = *hdrpp;
4843 if (hdr->bfd_section != NULL
252e386e
AM		 4844 && (hdr->bfd_section->filepos != 0
4845 || (hdr->sh_type == SHT_NOBITS
4846 && hdr->contents == NULL)))
627b32bc 4847 BFD_ASSERT (hdr->sh_offset == hdr->bfd_section->filepos);
5c182d5f
AM		 4848 else if ((hdr->sh_flags & SHF_ALLOC) != 0)
4849 {
e8d2ba53
AM		 4850 if (hdr->sh_size != 0)
4851 (*_bfd_error_handler)
4852 (_("%B: warning: allocated section `%s' not in segment"),
4853 abfd,
4854 (hdr->bfd_section == NULL
4855 ? "*unknown*"
4856 : hdr->bfd_section->name));
3ba71138
L		 4857 /* We don't need to page align empty sections. */
4858 if ((abfd->flags & D_PAGED) != 0 && hdr->sh_size != 0)
5c182d5f
AM		 4859 off += vma_page_aligned_bias (hdr->sh_addr, off,
4860 bed->maxpagesize);
4861 else
4862 off += vma_page_aligned_bias (hdr->sh_addr, off,
4863 hdr->sh_addralign);
4864 off = _bfd_elf_assign_file_position_for_section (hdr, off,
4865 FALSE);
4866 }
4867 else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA)
4868 && hdr->bfd_section == NULL)
4869 || hdr == i_shdrpp[tdata->symtab_section]
4870 || hdr == i_shdrpp[tdata->symtab_shndx_section]
4871 || hdr == i_shdrpp[tdata->strtab_section])
4872 hdr->sh_offset = -1;
4873 else
4874 off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
5c182d5f
AM		 4875 }
4876
252b5132
RH		 4877 /* Now that we have set the section file positions, we can set up
4878 the file positions for the non PT_LOAD segments. */
f3520d2f
AM		 4879 count = 0;
4880 filehdr_vaddr = 0;
4881 filehdr_paddr = 0;
4882 phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr;
4883 phdrs_paddr = 0;
62655c7b 4884 hdrs_segment = NULL;
f3520d2f
AM		 4885 phdrs = elf_tdata (abfd)->phdr;
4886 for (m = elf_tdata (abfd)->segment_map, p = phdrs;
4887 m != NULL;
4888 m = m->next, p++)
4889 {
4890 ++count;
4891 if (p->p_type != PT_LOAD)
4892 continue;
4893
4894 if (m->includes_filehdr)
4895 {
4896 filehdr_vaddr = p->p_vaddr;
4897 filehdr_paddr = p->p_paddr;
4898 }
4899 if (m->includes_phdrs)
4900 {
4901 phdrs_vaddr = p->p_vaddr;
4902 phdrs_paddr = p->p_paddr;
4903 if (m->includes_filehdr)
4904 {
62655c7b 4905 hdrs_segment = m;
f3520d2f
AM		 4906 phdrs_vaddr += bed->s->sizeof_ehdr;
4907 phdrs_paddr += bed->s->sizeof_ehdr;
4908 }
4909 }
4910 }
4911
62655c7b
RM		 4912 if (hdrs_segment != NULL && link_info != NULL)
4913 {
4914 /* There is a segment that contains both the file headers and the
4915 program headers, so provide a symbol __ehdr_start pointing there.
4916 A program can use this to examine itself robustly. */
4917
4918 struct elf_link_hash_entry *hash
4919 = elf_link_hash_lookup (elf_hash_table (link_info), "__ehdr_start",
4920 FALSE, FALSE, TRUE);
4921 /* If the symbol was referenced and not defined, define it. */
4922 if (hash != NULL
4923 && (hash->root.type == bfd_link_hash_new
4924 || hash->root.type == bfd_link_hash_undefined
4925 || hash->root.type == bfd_link_hash_undefweak
4926 || hash->root.type == bfd_link_hash_common))
4927 {
4928 asection *s = NULL;
4929 if (hdrs_segment->count != 0)
4930 /* The segment contains sections, so use the first one. */
4931 s = hdrs_segment->sections[0];
4932 else
4933 /* Use the first (i.e. lowest-addressed) section in any segment. */
4934 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
4935 if (m->count != 0)
4936 {
4937 s = m->sections[0];
4938 break;
4939 }
4940
4941 if (s != NULL)
4942 {
4943 hash->root.u.def.value = filehdr_vaddr - s->vma;
4944 hash->root.u.def.section = s;
4945 }
4946 else
4947 {
4948 hash->root.u.def.value = filehdr_vaddr;
4949 hash->root.u.def.section = bfd_abs_section_ptr;
4950 }
4951
4952 hash->root.type = bfd_link_hash_defined;
4953 hash->def_regular = 1;
4954 hash->non_elf = 0;
4955 }
4956 }
4957
252b5132
RH		 4958 for (m = elf_tdata (abfd)->segment_map, p = phdrs;
4959 m != NULL;
4960 m = m->next, p++)
4961 {
129af99f 4962 if (p->p_type == PT_GNU_RELRO)
252b5132 4963 {
b84a33b5 4964 const Elf_Internal_Phdr *lp;
3146fac4 4965 struct elf_segment_map *lm;
1ea63fd2 4966
129af99f 4967 if (link_info != NULL)
8c37241b 4968 {
129af99f
AS		 4969 /* During linking the range of the RELRO segment is passed
4970 in link_info. */
3146fac4
AM		 4971 for (lm = elf_tdata (abfd)->segment_map, lp = phdrs;
4972 lm != NULL;
4973 lm = lm->next, lp++)
8c37241b
JJ		 4974 {
4975 if (lp->p_type == PT_LOAD
b84a33b5 4976 && lp->p_vaddr < link_info->relro_end
3146fac4
AM		 4977 && lp->p_vaddr + lp->p_filesz >= link_info->relro_end
4978 && lm->count != 0
4979 && lm->sections[0]->vma >= link_info->relro_start)
8c37241b
JJ		 4980 break;
4981 }
8981c88a
L		 4982
4983 /* PR ld/14207. If the RELRO segment doesn't fit in the
4984 LOAD segment, it should be removed. */
3146fac4 4985 BFD_ASSERT (lm != NULL);
8c37241b 4986 }
129af99f
AS		 4987 else
4988 {
4989 /* Otherwise we are copying an executable or shared
b84a33b5 4990 library, but we need to use the same linker logic. */
129af99f
AS		 4991 for (lp = phdrs; lp < phdrs + count; ++lp)
4992 {
4993 if (lp->p_type == PT_LOAD
4994 && lp->p_paddr == p->p_paddr)
4995 break;
4996 }
b84a33b5
AM		 4997 }
4998
4999 if (lp < phdrs + count)
5000 {
5001 p->p_vaddr = lp->p_vaddr;
5002 p->p_paddr = lp->p_paddr;
5003 p->p_offset = lp->p_offset;
5004 if (link_info != NULL)
5005 p->p_filesz = link_info->relro_end - lp->p_vaddr;
5006 else if (m->p_size_valid)
5007 p->p_filesz = m->p_size;
129af99f
AS		 5008 else
5009 abort ();
b84a33b5 5010 p->p_memsz = p->p_filesz;
f3944f72
L		 5011 /* Preserve the alignment and flags if they are valid. The
5012 gold linker generates RW/4 for the PT_GNU_RELRO section.
5013 It is better for objcopy/strip to honor these attributes
5014 otherwise gdb will choke when using separate debug files.
5015 */
5016 if (!m->p_align_valid)
5017 p->p_align = 1;
5018 if (!m->p_flags_valid)
5019 p->p_flags = (lp->p_flags & ~PF_W);
129af99f 5020 }
9433b9b1 5021 else
b84a33b5
AM		 5022 {
5023 memset (p, 0, sizeof *p);
5024 p->p_type = PT_NULL;
5025 }
129af99f
AS		 5026 }
5027 else if (m->count != 0)
5028 {
5029 if (p->p_type != PT_LOAD
5030 && (p->p_type != PT_NOTE
5031 || bfd_get_format (abfd) != bfd_core))
5032 {
129af99f
AS		 5033 BFD_ASSERT (!m->includes_filehdr && !m->includes_phdrs);
5034
86b2281f 5035 p->p_filesz = 0;
129af99f 5036 p->p_offset = m->sections[0]->filepos;
86b2281f
AM		 5037 for (i = m->count; i-- != 0;)
5038 {
5039 asection *sect = m->sections[i];
5040 Elf_Internal_Shdr *hdr = &elf_section_data (sect)->this_hdr;
5041 if (hdr->sh_type != SHT_NOBITS)
5042 {
5043 p->p_filesz = (sect->filepos - m->sections[0]->filepos
5044 + hdr->sh_size);
5045 break;
5046 }
5047 }
129af99f
AS		 5048 }
5049 }
5050 else if (m->includes_filehdr)
5051 {
5052 p->p_vaddr = filehdr_vaddr;
5053 if (! m->p_paddr_valid)
5054 p->p_paddr = filehdr_paddr;
5055 }
5056 else if (m->includes_phdrs)
5057 {
5058 p->p_vaddr = phdrs_vaddr;
5059 if (! m->p_paddr_valid)
5060 p->p_paddr = phdrs_paddr;
252b5132
RH		 5061 }
5062 }
5063
252b5132
RH		 5064 elf_tdata (abfd)->next_file_pos = off;
5065
b34976b6 5066 return TRUE;
252b5132
RH		 5067}
5068
252b5132
RH		 5069/* Work out the file positions of all the sections. This is called by
5070 _bfd_elf_compute_section_file_positions. All the section sizes and
5071 VMAs must be known before this is called.
5072
e0638f70
AM		 5073 Reloc sections come in two flavours: Those processed specially as
5074 "side-channel" data attached to a section to which they apply, and
5075 those that bfd doesn't process as relocations. The latter sort are
5076 stored in a normal bfd section by bfd_section_from_shdr. We don't
5077 consider the former sort here, unless they form part of the loadable
5078 image. Reloc sections not assigned here will be handled later by
5079 assign_file_positions_for_relocs.
252b5132
RH		 5080
5081 We also don't set the positions of the .symtab and .strtab here. */
5082
b34976b6 5083static bfd_boolean
c84fca4d
AO		 5084assign_file_positions_except_relocs (bfd *abfd,
5085 struct bfd_link_info *link_info)
252b5132 5086{
5c182d5f
AM		 5087 struct elf_obj_tdata *tdata = elf_tdata (abfd);
5088 Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
252b5132 5089 file_ptr off;
9c5bfbb7 5090 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
252b5132
RH		 5091
5092 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0
5093 && bfd_get_format (abfd) != bfd_core)
5094 {
5c182d5f
AM		 5095 Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd);
5096 unsigned int num_sec = elf_numsections (abfd);
252b5132
RH		 5097 Elf_Internal_Shdr **hdrpp;
5098 unsigned int i;
5099
5100 /* Start after the ELF header. */
5101 off = i_ehdrp->e_ehsize;
5102
5103 /* We are not creating an executable, which means that we are
5104 not creating a program header, and that the actual order of
5105 the sections in the file is unimportant. */
9ad5cbcf 5106 for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++)
252b5132
RH		 5107 {
5108 Elf_Internal_Shdr *hdr;
5109
5110 hdr = *hdrpp;
e0638f70
AM		 5111 if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA)
5112 && hdr->bfd_section == NULL)
9ad5cbcf
AM		 5113 || i == tdata->symtab_section
5114 || i == tdata->symtab_shndx_section
252b5132
RH		 5115 || i == tdata->strtab_section)
5116 {
5117 hdr->sh_offset = -1;
252b5132 5118 }
9ad5cbcf 5119 else
b34976b6 5120 off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
252b5132
RH		 5121 }
5122 }
5123 else
5124 {
f3520d2f
AM		 5125 unsigned int alloc;
5126
252b5132 5127 /* Assign file positions for the loaded sections based on the
08a40648 5128 assignment of sections to segments. */
f3520d2f
AM		 5129 if (!assign_file_positions_for_load_sections (abfd, link_info))
5130 return FALSE;
5131
5132 /* And for non-load sections. */
5133 if (!assign_file_positions_for_non_load_sections (abfd, link_info))
5134 return FALSE;
5135
e36284ab
AM		 5136 if (bed->elf_backend_modify_program_headers != NULL)
5137 {
5138 if (!(*bed->elf_backend_modify_program_headers) (abfd, link_info))
5139 return FALSE;
5140 }
5141
f3520d2f
AM		 5142 /* Write out the program headers. */
5143 alloc = tdata->program_header_size / bed->s->sizeof_phdr;
5144 if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0
5145 || bed->s->write_out_phdrs (abfd, tdata->phdr, alloc) != 0)
b34976b6 5146 return FALSE;
252b5132 5147
5c182d5f 5148 off = tdata->next_file_pos;
252b5132
RH		 5149 }
5150
5151 /* Place the section headers. */
45d6a902 5152 off = align_file_position (off, 1 << bed->s->log_file_align);
252b5132
RH		 5153 i_ehdrp->e_shoff = off;
5154 off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize;
5155
5c182d5f 5156 tdata->next_file_pos = off;
252b5132 5157
b34976b6 5158 return TRUE;
252b5132
RH		 5159}
5160
b34976b6 5161static bfd_boolean
217aa764 5162prep_headers (bfd *abfd)
252b5132 5163{
3d540e93 5164 Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form. */
2b0f7ef9 5165 struct elf_strtab_hash *shstrtab;
9c5bfbb7 5166 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
252b5132
RH		 5167
5168 i_ehdrp = elf_elfheader (abfd);
252b5132 5169
2b0f7ef9 5170 shstrtab = _bfd_elf_strtab_init ();
252b5132 5171 if (shstrtab == NULL)
b34976b6 5172 return FALSE;
252b5132
RH		 5173
5174 elf_shstrtab (abfd) = shstrtab;
5175
5176 i_ehdrp->e_ident[EI_MAG0] = ELFMAG0;
5177 i_ehdrp->e_ident[EI_MAG1] = ELFMAG1;
5178 i_ehdrp->e_ident[EI_MAG2] = ELFMAG2;
5179 i_ehdrp->e_ident[EI_MAG3] = ELFMAG3;
5180
5181 i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass;
5182 i_ehdrp->e_ident[EI_DATA] =
5183 bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB;
5184 i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current;
5185
252b5132
RH		 5186 if ((abfd->flags & DYNAMIC) != 0)
5187 i_ehdrp->e_type = ET_DYN;
5188 else if ((abfd->flags & EXEC_P) != 0)
5189 i_ehdrp->e_type = ET_EXEC;
5190 else if (bfd_get_format (abfd) == bfd_core)
5191 i_ehdrp->e_type = ET_CORE;
5192 else
5193 i_ehdrp->e_type = ET_REL;
5194
5195 switch (bfd_get_arch (abfd))
5196 {
5197 case bfd_arch_unknown:
5198 i_ehdrp->e_machine = EM_NONE;
5199 break;
aa4f99bb
AO		 5200
5201 /* There used to be a long list of cases here, each one setting
5202 e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE
5203 in the corresponding bfd definition. To avoid duplication,
5204 the switch was removed. Machines that need special handling
5205 can generally do it in elf_backend_final_write_processing(),
5206 unless they need the information earlier than the final write.
5207 Such need can generally be supplied by replacing the tests for
5208 e_machine with the conditions used to determine it. */
252b5132 5209 default:
9c5bfbb7
AM		 5210 i_ehdrp->e_machine = bed->elf_machine_code;
5211 }
aa4f99bb 5212
252b5132
RH		 5213 i_ehdrp->e_version = bed->s->ev_current;
5214 i_ehdrp->e_ehsize = bed->s->sizeof_ehdr;
5215
c044fabd 5216 /* No program header, for now. */
252b5132
RH		 5217 i_ehdrp->e_phoff = 0;
5218 i_ehdrp->e_phentsize = 0;
5219 i_ehdrp->e_phnum = 0;
5220
c044fabd 5221 /* Each bfd section is section header entry. */
252b5132
RH		 5222 i_ehdrp->e_entry = bfd_get_start_address (abfd);
5223 i_ehdrp->e_shentsize = bed->s->sizeof_shdr;
5224
c044fabd 5225 /* If we're building an executable, we'll need a program header table. */
252b5132 5226 if (abfd->flags & EXEC_P)
0e71e495
BE		 5227 /* It all happens later. */
5228 ;
252b5132
RH		 5229 else
5230 {
5231 i_ehdrp->e_phentsize = 0;
252b5132
RH		 5232 i_ehdrp->e_phoff = 0;
5233 }
5234
5235 elf_tdata (abfd)->symtab_hdr.sh_name =
b34976b6 5236 (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE);
252b5132 5237 elf_tdata (abfd)->strtab_hdr.sh_name =
b34976b6 5238 (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE);
252b5132 5239 elf_tdata (abfd)->shstrtab_hdr.sh_name =
b34976b6 5240 (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE);
252b5132
RH		 5241 if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1
5242 || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1
5243 || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1)
b34976b6 5244 return FALSE;
252b5132 5245
b34976b6 5246 return TRUE;
252b5132
RH		 5247}
5248
5249/* Assign file positions for all the reloc sections which are not part
5250 of the loadable file image. */
5251
5252void
217aa764 5253_bfd_elf_assign_file_positions_for_relocs (bfd *abfd)
252b5132
RH		 5254{
5255 file_ptr off;
9ad5cbcf 5256 unsigned int i, num_sec;
252b5132
RH		 5257 Elf_Internal_Shdr **shdrpp;
5258
5259 off = elf_tdata (abfd)->next_file_pos;
5260
9ad5cbcf
AM		 5261 num_sec = elf_numsections (abfd);
5262 for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++)
252b5132
RH		 5263 {
5264 Elf_Internal_Shdr *shdrp;
5265
5266 shdrp = *shdrpp;
5267 if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA)
5268 && shdrp->sh_offset == -1)
b34976b6 5269 off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE);
252b5132
RH		 5270 }
5271
5272 elf_tdata (abfd)->next_file_pos = off;
5273}
5274
b34976b6 5275bfd_boolean
217aa764 5276_bfd_elf_write_object_contents (bfd *abfd)
252b5132 5277{
9c5bfbb7 5278 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
252b5132 5279 Elf_Internal_Shdr **i_shdrp;
b34976b6 5280 bfd_boolean failed;
9ad5cbcf 5281 unsigned int count, num_sec;
252b5132
RH		 5282
5283 if (! abfd->output_has_begun
217aa764 5284 && ! _bfd_elf_compute_section_file_positions (abfd, NULL))
b34976b6 5285 return FALSE;
252b5132
RH		 5286
5287 i_shdrp = elf_elfsections (abfd);
252b5132 5288
b34976b6 5289 failed = FALSE;
252b5132
RH		 5290 bfd_map_over_sections (abfd, bed->s->write_relocs, &failed);
5291 if (failed)
b34976b6 5292 return FALSE;
252b5132
RH		 5293
5294 _bfd_elf_assign_file_positions_for_relocs (abfd);
5295
c044fabd 5296 /* After writing the headers, we need to write the sections too... */
9ad5cbcf
AM		 5297 num_sec = elf_numsections (abfd);
5298 for (count = 1; count < num_sec; count++)
252b5132
RH		 5299 {
5300 if (bed->elf_backend_section_processing)
5301 (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]);
5302 if (i_shdrp[count]->contents)
5303 {
dc810e39
AM		 5304 bfd_size_type amt = i_shdrp[count]->sh_size;
5305
252b5132 5306 if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0
dc810e39 5307 || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt)
b34976b6 5308 return FALSE;
252b5132
RH		 5309 }
5310 }
5311
5312 /* Write out the section header names. */
26ae6d5e
DJ		 5313 if (elf_shstrtab (abfd) != NULL
5314 && (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0
08a40648 5315 || !_bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd))))
b34976b6 5316 return FALSE;
252b5132
RH		 5317
5318 if (bed->elf_backend_final_write_processing)
5319 (*bed->elf_backend_final_write_processing) (abfd,
5320 elf_tdata (abfd)->linker);
5321
ff59fc36
RM		 5322 if (!bed->s->write_shdrs_and_ehdr (abfd))
5323 return FALSE;
5324
5325 /* This is last since write_shdrs_and_ehdr can touch i_shdrp[0]. */
bfb53a4f
RM		 5326 if (elf_tdata (abfd)->after_write_object_contents)
5327 return (*elf_tdata (abfd)->after_write_object_contents) (abfd);
ff59fc36
RM		 5328
5329 return TRUE;
252b5132
RH		 5330}
5331
b34976b6 5332bfd_boolean
217aa764 5333_bfd_elf_write_corefile_contents (bfd *abfd)
252b5132 5334{
c044fabd 5335 /* Hopefully this can be done just like an object file. */
252b5132
RH		 5336 return _bfd_elf_write_object_contents (abfd);
5337}
c044fabd
KH		 5338
5339/* Given a section, search the header to find them. */
5340
cb33740c 5341unsigned int
198beae2 5342_bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect)
252b5132 5343{
9c5bfbb7 5344 const struct elf_backend_data *bed;
91d6fa6a 5345 unsigned int sec_index;
252b5132 5346
9ad5cbcf
AM		 5347 if (elf_section_data (asect) != NULL
5348 && elf_section_data (asect)->this_idx != 0)
5349 return elf_section_data (asect)->this_idx;
5350
5351 if (bfd_is_abs_section (asect))
91d6fa6a 5352 sec_index = SHN_ABS;
af746e92 5353 else if (bfd_is_com_section (asect))
91d6fa6a 5354 sec_index = SHN_COMMON;
af746e92 5355 else if (bfd_is_und_section (asect))
91d6fa6a 5356 sec_index = SHN_UNDEF;
af746e92 5357 else
91d6fa6a 5358 sec_index = SHN_BAD;
252b5132 5359
af746e92 5360 bed = get_elf_backend_data (abfd);
252b5132
RH		 5361 if (bed->elf_backend_section_from_bfd_section)
5362 {
91d6fa6a 5363 int retval = sec_index;
9ad5cbcf 5364
af746e92
AM		 5365 if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval))
5366 return retval;
252b5132
RH		 5367 }
5368
91d6fa6a 5369 if (sec_index == SHN_BAD)
af746e92 5370 bfd_set_error (bfd_error_nonrepresentable_section);
252b5132 5371
91d6fa6a 5372 return sec_index;
252b5132
RH		 5373}
5374
5375/* Given a BFD symbol, return the index in the ELF symbol table, or -1
5376 on error. */
5377
5378int
217aa764 5379_bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr)
252b5132
RH		 5380{
5381 asymbol *asym_ptr = *asym_ptr_ptr;
5382 int idx;
5383 flagword flags = asym_ptr->flags;
5384
5385 /* When gas creates relocations against local labels, it creates its
5386 own symbol for the section, but does put the symbol into the
5387 symbol chain, so udata is 0. When the linker is generating
5388 relocatable output, this section symbol may be for one of the
5389 input sections rather than the output section. */
5390 if (asym_ptr->udata.i == 0
5391 && (flags & BSF_SECTION_SYM)
5392 && asym_ptr->section)
5393 {
5372391b 5394 asection *sec;
252b5132
RH		 5395 int indx;
5396
5372391b
AM		 5397 sec = asym_ptr->section;
5398 if (sec->owner != abfd && sec->output_section != NULL)
5399 sec = sec->output_section;
5400 if (sec->owner == abfd
5401 && (indx = sec->index) < elf_num_section_syms (abfd)
4e89ac30 5402 && elf_section_syms (abfd)[indx] != NULL)
252b5132
RH		 5403 asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i;
5404 }
5405
5406 idx = asym_ptr->udata.i;
5407
5408 if (idx == 0)
5409 {
5410 /* This case can occur when using --strip-symbol on a symbol
08a40648 5411 which is used in a relocation entry. */
252b5132 5412 (*_bfd_error_handler)
d003868e
AM		 5413 (_("%B: symbol `%s' required but not present"),
5414 abfd, bfd_asymbol_name (asym_ptr));
252b5132
RH		 5415 bfd_set_error (bfd_error_no_symbols);
5416 return -1;
5417 }
5418
5419#if DEBUG & 4
5420 {
5421 fprintf (stderr,
9ccb8af9
AM		 5422 "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx\n",
5423 (long) asym_ptr, asym_ptr->name, idx, (long) flags);
252b5132
RH		 5424 fflush (stderr);
5425 }
5426#endif
5427
5428 return idx;
5429}
5430
84d1d650 5431/* Rewrite program header information. */
252b5132 5432
b34976b6 5433static bfd_boolean
84d1d650 5434rewrite_elf_program_header (bfd *ibfd, bfd *obfd)
252b5132 5435{
b34976b6
AM		 5436 Elf_Internal_Ehdr *iehdr;
5437 struct elf_segment_map *map;
5438 struct elf_segment_map *map_first;
5439 struct elf_segment_map **pointer_to_map;
5440 Elf_Internal_Phdr *segment;
5441 asection *section;
5442 unsigned int i;
5443 unsigned int num_segments;
5444 bfd_boolean phdr_included = FALSE;
5c44b38e 5445 bfd_boolean p_paddr_valid;
b34976b6
AM		 5446 bfd_vma maxpagesize;
5447 struct elf_segment_map *phdr_adjust_seg = NULL;
5448 unsigned int phdr_adjust_num = 0;
9c5bfbb7 5449 const struct elf_backend_data *bed;
bc67d8a6 5450
caf47ea6 5451 bed = get_elf_backend_data (ibfd);
252b5132
RH		 5452 iehdr = elf_elfheader (ibfd);
5453
bc67d8a6 5454 map_first = NULL;
c044fabd 5455 pointer_to_map = &map_first;
252b5132
RH		 5456
5457 num_segments = elf_elfheader (ibfd)->e_phnum;
bc67d8a6
NC		 5458 maxpagesize = get_elf_backend_data (obfd)->maxpagesize;
5459
5460 /* Returns the end address of the segment + 1. */
aecc8f8a
AM		 5461#define SEGMENT_END(segment, start) \
5462 (start + (segment->p_memsz > segment->p_filesz \
5463 ? segment->p_memsz : segment->p_filesz))
bc67d8a6 5464
eecdbe52
JJ		 5465#define SECTION_SIZE(section, segment) \
5466 (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \
5467 != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \
eea6121a 5468 ? section->size : 0)
eecdbe52 5469
b34976b6 5470 /* Returns TRUE if the given section is contained within
bc67d8a6 5471 the given segment. VMA addresses are compared. */
aecc8f8a
AM		 5472#define IS_CONTAINED_BY_VMA(section, segment) \
5473 (section->vma >= segment->p_vaddr \
eecdbe52 5474 && (section->vma + SECTION_SIZE (section, segment) \
aecc8f8a 5475 <= (SEGMENT_END (segment, segment->p_vaddr))))
c044fabd 5476
b34976b6 5477 /* Returns TRUE if the given section is contained within
bc67d8a6 5478 the given segment. LMA addresses are compared. */
aecc8f8a
AM		 5479#define IS_CONTAINED_BY_LMA(section, segment, base) \
5480 (section->lma >= base \
eecdbe52 5481 && (section->lma + SECTION_SIZE (section, segment) \
aecc8f8a 5482 <= SEGMENT_END (segment, base)))
252b5132 5483
0efc80c8
L		 5484 /* Handle PT_NOTE segment. */
5485#define IS_NOTE(p, s) \
aecc8f8a 5486 (p->p_type == PT_NOTE \
0efc80c8 5487 && elf_section_type (s) == SHT_NOTE \
aecc8f8a 5488 && (bfd_vma) s->filepos >= p->p_offset \
cb3ff1e5 5489 && ((bfd_vma) s->filepos + s->size \
aecc8f8a 5490 <= p->p_offset + p->p_filesz))
252b5132 5491
0efc80c8
L		 5492 /* Special case: corefile "NOTE" section containing regs, prpsinfo
5493 etc. */
5494#define IS_COREFILE_NOTE(p, s) \
5495 (IS_NOTE (p, s) \
5496 && bfd_get_format (ibfd) == bfd_core \
5497 && s->vma == 0 \
5498 && s->lma == 0)
5499
252b5132
RH		 5500 /* The complicated case when p_vaddr is 0 is to handle the Solaris
5501 linker, which generates a PT_INTERP section with p_vaddr and
5502 p_memsz set to 0. */
aecc8f8a
AM		 5503#define IS_SOLARIS_PT_INTERP(p, s) \
5504 (p->p_vaddr == 0 \
5505 && p->p_paddr == 0 \
5506 && p->p_memsz == 0 \
5507 && p->p_filesz > 0 \
5508 && (s->flags & SEC_HAS_CONTENTS) != 0 \
eea6121a 5509 && s->size > 0 \
aecc8f8a 5510 && (bfd_vma) s->filepos >= p->p_offset \
cb3ff1e5 5511 && ((bfd_vma) s->filepos + s->size \
aecc8f8a 5512 <= p->p_offset + p->p_filesz))
5c440b1e 5513
bc67d8a6
NC		 5514 /* Decide if the given section should be included in the given segment.
5515 A section will be included if:
f5ffc919 5516 1. It is within the address space of the segment -- we use the LMA
08a40648 5517 if that is set for the segment and the VMA otherwise,
0efc80c8 5518 2. It is an allocated section or a NOTE section in a PT_NOTE
d324f6d6 5519 segment.
bc67d8a6 5520 3. There is an output section associated with it,
eecdbe52 5521 4. The section has not already been allocated to a previous segment.
2b05f1b7 5522 5. PT_GNU_STACK segments do not include any sections.
03394ac9 5523 6. PT_TLS segment includes only SHF_TLS sections.
6f79b219
JJ		 5524 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments.
5525 8. PT_DYNAMIC should not contain empty sections at the beginning
08a40648 5526 (with the possible exception of .dynamic). */
9f17e2a6 5527#define IS_SECTION_IN_INPUT_SEGMENT(section, segment, bed) \
2b05f1b7
L		 5528 ((((segment->p_paddr \
5529 ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \
5530 : IS_CONTAINED_BY_VMA (section, segment)) \
5531 && (section->flags & SEC_ALLOC) != 0) \
0efc80c8 5532 || IS_NOTE (segment, section)) \
2b05f1b7
L		 5533 && segment->p_type != PT_GNU_STACK \
5534 && (segment->p_type != PT_TLS \
5535 || (section->flags & SEC_THREAD_LOCAL)) \
5536 && (segment->p_type == PT_LOAD \
5537 || segment->p_type == PT_TLS \
5538 || (section->flags & SEC_THREAD_LOCAL) == 0) \
5539 && (segment->p_type != PT_DYNAMIC \
5540 || SECTION_SIZE (section, segment) > 0 \
5541 || (segment->p_paddr \
5542 ? segment->p_paddr != section->lma \
5543 : segment->p_vaddr != section->vma) \
5544 || (strcmp (bfd_get_section_name (ibfd, section), ".dynamic") \
5545 == 0)) \
0067a569 5546 && !section->segment_mark)
bc67d8a6 5547
9f17e2a6
L		 5548/* If the output section of a section in the input segment is NULL,
5549 it is removed from the corresponding output segment. */
5550#define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \
5551 (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed) \
5552 && section->output_section != NULL)
5553
b34976b6 5554 /* Returns TRUE iff seg1 starts after the end of seg2. */
b5f852ea
NC		 5555#define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \
5556 (seg1->field >= SEGMENT_END (seg2, seg2->field))
5557
5558 /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both
5559 their VMA address ranges and their LMA address ranges overlap.
5560 It is possible to have overlapping VMA ranges without overlapping LMA
5561 ranges. RedBoot images for example can have both .data and .bss mapped
5562 to the same VMA range, but with the .data section mapped to a different
5563 LMA. */
aecc8f8a 5564#define SEGMENT_OVERLAPS(seg1, seg2) \
b5f852ea 5565 ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \
08a40648 5566 || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \
b5f852ea 5567 && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \
08a40648 5568 || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr)))
bc67d8a6
NC		 5569
5570 /* Initialise the segment mark field. */
5571 for (section = ibfd->sections; section != NULL; section = section->next)
b34976b6 5572 section->segment_mark = FALSE;
bc67d8a6 5573
5c44b38e
AM		 5574 /* The Solaris linker creates program headers in which all the
5575 p_paddr fields are zero. When we try to objcopy or strip such a
5576 file, we get confused. Check for this case, and if we find it
5577 don't set the p_paddr_valid fields. */
5578 p_paddr_valid = FALSE;
5579 for (i = 0, segment = elf_tdata (ibfd)->phdr;
5580 i < num_segments;
5581 i++, segment++)
5582 if (segment->p_paddr != 0)
5583 {
5584 p_paddr_valid = TRUE;
5585 break;
5586 }
5587
252b5132 5588 /* Scan through the segments specified in the program header
bc67d8a6 5589 of the input BFD. For this first scan we look for overlaps
9ad5cbcf 5590 in the loadable segments. These can be created by weird
aecc8f8a 5591 parameters to objcopy. Also, fix some solaris weirdness. */
bc67d8a6
NC		 5592 for (i = 0, segment = elf_tdata (ibfd)->phdr;
5593 i < num_segments;
c044fabd 5594 i++, segment++)
252b5132 5595 {
252b5132 5596 unsigned int j;
c044fabd 5597 Elf_Internal_Phdr *segment2;
252b5132 5598
aecc8f8a
AM		 5599 if (segment->p_type == PT_INTERP)
5600 for (section = ibfd->sections; section; section = section->next)
5601 if (IS_SOLARIS_PT_INTERP (segment, section))
5602 {
5603 /* Mininal change so that the normal section to segment
4cc11e76 5604 assignment code will work. */
aecc8f8a
AM		 5605 segment->p_vaddr = section->vma;
5606 break;
5607 }
5608
bc67d8a6 5609 if (segment->p_type != PT_LOAD)
b10a8ae0
L		 5610 {
5611 /* Remove PT_GNU_RELRO segment. */
5612 if (segment->p_type == PT_GNU_RELRO)
5613 segment->p_type = PT_NULL;
5614 continue;
5615 }
c044fabd 5616
bc67d8a6 5617 /* Determine if this segment overlaps any previous segments. */
0067a569 5618 for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2++)
bc67d8a6
NC		 5619 {
5620 bfd_signed_vma extra_length;
c044fabd 5621
bc67d8a6 5622 if (segment2->p_type != PT_LOAD
0067a569 5623 || !SEGMENT_OVERLAPS (segment, segment2))
bc67d8a6 5624 continue;
c044fabd 5625
bc67d8a6
NC		 5626 /* Merge the two segments together. */
5627 if (segment2->p_vaddr < segment->p_vaddr)
5628 {
c044fabd 5629 /* Extend SEGMENT2 to include SEGMENT and then delete
08a40648 5630 SEGMENT. */
0067a569
AM		 5631 extra_length = (SEGMENT_END (segment, segment->p_vaddr)
5632 - SEGMENT_END (segment2, segment2->p_vaddr));
c044fabd 5633
bc67d8a6
NC		 5634 if (extra_length > 0)
5635 {
0067a569 5636 segment2->p_memsz += extra_length;
bc67d8a6
NC		 5637 segment2->p_filesz += extra_length;
5638 }
c044fabd 5639
bc67d8a6 5640 segment->p_type = PT_NULL;
c044fabd 5641
bc67d8a6
NC		 5642 /* Since we have deleted P we must restart the outer loop. */
5643 i = 0;
5644 segment = elf_tdata (ibfd)->phdr;
5645 break;
5646 }
5647 else
5648 {
c044fabd 5649 /* Extend SEGMENT to include SEGMENT2 and then delete
08a40648 5650 SEGMENT2. */
0067a569
AM		 5651 extra_length = (SEGMENT_END (segment2, segment2->p_vaddr)
5652 - SEGMENT_END (segment, segment->p_vaddr));
c044fabd 5653
bc67d8a6
NC		 5654 if (extra_length > 0)
5655 {
0067a569 5656 segment->p_memsz += extra_length;
bc67d8a6
NC		 5657 segment->p_filesz += extra_length;
5658 }
c044fabd 5659
bc67d8a6
NC		 5660 segment2->p_type = PT_NULL;
5661 }
5662 }
5663 }
c044fabd 5664
bc67d8a6
NC		 5665 /* The second scan attempts to assign sections to segments. */
5666 for (i = 0, segment = elf_tdata (ibfd)->phdr;
5667 i < num_segments;
0067a569 5668 i++, segment++)
bc67d8a6 5669 {
0067a569
AM		 5670 unsigned int section_count;
5671 asection **sections;
5672 asection *output_section;
5673 unsigned int isec;
5674 bfd_vma matching_lma;
5675 bfd_vma suggested_lma;
5676 unsigned int j;
dc810e39 5677 bfd_size_type amt;
0067a569
AM		 5678 asection *first_section;
5679 bfd_boolean first_matching_lma;
5680 bfd_boolean first_suggested_lma;
bc67d8a6
NC		 5681
5682 if (segment->p_type == PT_NULL)
5683 continue;
c044fabd 5684
9f17e2a6 5685 first_section = NULL;
bc67d8a6 5686 /* Compute how many sections might be placed into this segment. */
b5f852ea
NC		 5687 for (section = ibfd->sections, section_count = 0;
5688 section != NULL;
5689 section = section->next)
9f17e2a6
L		 5690 {
5691 /* Find the first section in the input segment, which may be
5692 removed from the corresponding output segment. */
5693 if (IS_SECTION_IN_INPUT_SEGMENT (section, segment, bed))
5694 {
5695 if (first_section == NULL)
5696 first_section = section;
5697 if (section->output_section != NULL)
5698 ++section_count;
5699 }
5700 }
811072d8 5701
b5f852ea
NC		 5702 /* Allocate a segment map big enough to contain
5703 all of the sections we have selected. */
dc810e39
AM		 5704 amt = sizeof (struct elf_segment_map);
5705 amt += ((bfd_size_type) section_count - 1) * sizeof (asection *);
a50b1753 5706 map = (struct elf_segment_map *) bfd_zalloc (obfd, amt);
bc67d8a6 5707 if (map == NULL)
b34976b6 5708 return FALSE;
252b5132
RH		 5709
5710 /* Initialise the fields of the segment map. Default to
5711 using the physical address of the segment in the input BFD. */
0067a569
AM		 5712 map->next = NULL;
5713 map->p_type = segment->p_type;
5714 map->p_flags = segment->p_flags;
bc67d8a6 5715 map->p_flags_valid = 1;
55d55ac7 5716
9f17e2a6
L		 5717 /* If the first section in the input segment is removed, there is
5718 no need to preserve segment physical address in the corresponding
5719 output segment. */
945c025a 5720 if (!first_section || first_section->output_section != NULL)
9f17e2a6
L		 5721 {
5722 map->p_paddr = segment->p_paddr;
5c44b38e 5723 map->p_paddr_valid = p_paddr_valid;
9f17e2a6 5724 }
252b5132
RH		 5725
5726 /* Determine if this segment contains the ELF file header
5727 and if it contains the program headers themselves. */
bc67d8a6
NC		 5728 map->includes_filehdr = (segment->p_offset == 0
5729 && segment->p_filesz >= iehdr->e_ehsize);
bc67d8a6 5730 map->includes_phdrs = 0;
252b5132 5731
0067a569 5732 if (!phdr_included || segment->p_type != PT_LOAD)
252b5132 5733 {
bc67d8a6
NC		 5734 map->includes_phdrs =
5735 (segment->p_offset <= (bfd_vma) iehdr->e_phoff
5736 && (segment->p_offset + segment->p_filesz
252b5132
RH		 5737 >= ((bfd_vma) iehdr->e_phoff
5738 + iehdr->e_phnum * iehdr->e_phentsize)));
c044fabd 5739
bc67d8a6 5740 if (segment->p_type == PT_LOAD && map->includes_phdrs)
b34976b6 5741 phdr_included = TRUE;
252b5132
RH		 5742 }
5743
bc67d8a6 5744 if (section_count == 0)
252b5132
RH		 5745 {
5746 /* Special segments, such as the PT_PHDR segment, may contain
5747 no sections, but ordinary, loadable segments should contain
1ed89aa9
NC		 5748 something. They are allowed by the ELF spec however, so only
5749 a warning is produced. */
bc67d8a6 5750 if (segment->p_type == PT_LOAD)
0067a569
AM		 5751 (*_bfd_error_handler) (_("%B: warning: Empty loadable segment"
5752 " detected, is this intentional ?\n"),
5753 ibfd);
252b5132 5754
bc67d8a6 5755 map->count = 0;
c044fabd
KH		 5756 *pointer_to_map = map;
5757 pointer_to_map = &map->next;
252b5132
RH		 5758
5759 continue;
5760 }
5761
5762 /* Now scan the sections in the input BFD again and attempt
5763 to add their corresponding output sections to the segment map.
5764 The problem here is how to handle an output section which has
5765 been moved (ie had its LMA changed). There are four possibilities:
5766
5767 1. None of the sections have been moved.
5768 In this case we can continue to use the segment LMA from the
5769 input BFD.
5770
5771 2. All of the sections have been moved by the same amount.
5772 In this case we can change the segment's LMA to match the LMA
5773 of the first section.
5774
5775 3. Some of the sections have been moved, others have not.
5776 In this case those sections which have not been moved can be
5777 placed in the current segment which will have to have its size,
5778 and possibly its LMA changed, and a new segment or segments will
5779 have to be created to contain the other sections.
5780
b5f852ea 5781 4. The sections have been moved, but not by the same amount.
252b5132
RH		 5782 In this case we can change the segment's LMA to match the LMA
5783 of the first section and we will have to create a new segment
5784 or segments to contain the other sections.
5785
5786 In order to save time, we allocate an array to hold the section
5787 pointers that we are interested in. As these sections get assigned
5788 to a segment, they are removed from this array. */
5789
a50b1753 5790 sections = (asection **) bfd_malloc2 (section_count, sizeof (asection *));
252b5132 5791 if (sections == NULL)
b34976b6 5792 return FALSE;
252b5132
RH		 5793
5794 /* Step One: Scan for segment vs section LMA conflicts.
5795 Also add the sections to the section array allocated above.
5796 Also add the sections to the current segment. In the common
5797 case, where the sections have not been moved, this means that
5798 we have completely filled the segment, and there is nothing
5799 more to do. */
252b5132 5800 isec = 0;
72730e0c 5801 matching_lma = 0;
252b5132 5802 suggested_lma = 0;
0067a569
AM		 5803 first_matching_lma = TRUE;
5804 first_suggested_lma = TRUE;
252b5132 5805
147d51c2 5806 for (section = ibfd->sections;
bc67d8a6
NC		 5807 section != NULL;
5808 section = section->next)
147d51c2
L		 5809 if (section == first_section)
5810 break;
5811
5812 for (j = 0; section != NULL; section = section->next)
252b5132 5813 {
caf47ea6 5814 if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed))
c0f7859b 5815 {
bc67d8a6
NC		 5816 output_section = section->output_section;
5817
0067a569 5818 sections[j++] = section;
252b5132
RH		 5819
5820 /* The Solaris native linker always sets p_paddr to 0.
5821 We try to catch that case here, and set it to the
5e8d7549
NC		 5822 correct value. Note - some backends require that
5823 p_paddr be left as zero. */
5c44b38e 5824 if (!p_paddr_valid
4455705d 5825 && segment->p_vaddr != 0
0067a569 5826 && !bed->want_p_paddr_set_to_zero
252b5132 5827 && isec == 0
bc67d8a6 5828 && output_section->lma != 0
0067a569
AM		 5829 && output_section->vma == (segment->p_vaddr
5830 + (map->includes_filehdr
5831 ? iehdr->e_ehsize
5832 : 0)
5833 + (map->includes_phdrs
5834 ? (iehdr->e_phnum
5835 * iehdr->e_phentsize)
5836 : 0)))
bc67d8a6 5837 map->p_paddr = segment->p_vaddr;
252b5132
RH		 5838
5839 /* Match up the physical address of the segment with the
5840 LMA address of the output section. */
bc67d8a6 5841 if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr)
5e8d7549 5842 || IS_COREFILE_NOTE (segment, section)
0067a569
AM		 5843 || (bed->want_p_paddr_set_to_zero
5844 && IS_CONTAINED_BY_VMA (output_section, segment)))
252b5132 5845 {
0067a569
AM		 5846 if (first_matching_lma || output_section->lma < matching_lma)
5847 {
5848 matching_lma = output_section->lma;
5849 first_matching_lma = FALSE;
5850 }
252b5132
RH		 5851
5852 /* We assume that if the section fits within the segment
bc67d8a6 5853 then it does not overlap any other section within that
252b5132 5854 segment. */
0067a569
AM		 5855 map->sections[isec++] = output_section;
5856 }
5857 else if (first_suggested_lma)
5858 {
5859 suggested_lma = output_section->lma;
5860 first_suggested_lma = FALSE;
252b5132 5861 }
147d51c2
L		 5862
5863 if (j == section_count)
5864 break;
252b5132
RH		 5865 }
5866 }
5867
bc67d8a6 5868 BFD_ASSERT (j == section_count);
252b5132
RH		 5869
5870 /* Step Two: Adjust the physical address of the current segment,
5871 if necessary. */
bc67d8a6 5872 if (isec == section_count)
252b5132
RH		 5873 {
5874 /* All of the sections fitted within the segment as currently
5875 specified. This is the default case. Add the segment to
5876 the list of built segments and carry on to process the next
5877 program header in the input BFD. */
bc67d8a6 5878 map->count = section_count;
c044fabd
KH		 5879 *pointer_to_map = map;
5880 pointer_to_map = &map->next;
08a40648 5881
5c44b38e
AM		 5882 if (p_paddr_valid
5883 && !bed->want_p_paddr_set_to_zero
147d51c2 5884 && matching_lma != map->p_paddr
5c44b38e
AM		 5885 && !map->includes_filehdr
5886 && !map->includes_phdrs)
3271a814
NS		 5887 /* There is some padding before the first section in the
5888 segment. So, we must account for that in the output
5889 segment's vma. */
5890 map->p_vaddr_offset = matching_lma - map->p_paddr;
08a40648 5891
252b5132
RH		 5892 free (sections);
5893 continue;
5894 }
252b5132
RH		 5895 else
5896 {
0067a569 5897 if (!first_matching_lma)
72730e0c
AM		 5898 {
5899 /* At least one section fits inside the current segment.
5900 Keep it, but modify its physical address to match the
5901 LMA of the first section that fitted. */
bc67d8a6 5902 map->p_paddr = matching_lma;
72730e0c
AM		 5903 }
5904 else
5905 {
5906 /* None of the sections fitted inside the current segment.
5907 Change the current segment's physical address to match
5908 the LMA of the first section. */
bc67d8a6 5909 map->p_paddr = suggested_lma;
72730e0c
AM		 5910 }
5911
bc67d8a6
NC		 5912 /* Offset the segment physical address from the lma
5913 to allow for space taken up by elf headers. */
5914 if (map->includes_filehdr)
010c8431
AM		 5915 {
5916 if (map->p_paddr >= iehdr->e_ehsize)
5917 map->p_paddr -= iehdr->e_ehsize;
5918 else
5919 {
5920 map->includes_filehdr = FALSE;
5921 map->includes_phdrs = FALSE;
5922 }
5923 }
252b5132 5924
bc67d8a6
NC		 5925 if (map->includes_phdrs)
5926 {
010c8431
AM		 5927 if (map->p_paddr >= iehdr->e_phnum * iehdr->e_phentsize)
5928 {
5929 map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize;
5930
5931 /* iehdr->e_phnum is just an estimate of the number
5932 of program headers that we will need. Make a note
5933 here of the number we used and the segment we chose
5934 to hold these headers, so that we can adjust the
5935 offset when we know the correct value. */
5936 phdr_adjust_num = iehdr->e_phnum;
5937 phdr_adjust_seg = map;
5938 }
5939 else
5940 map->includes_phdrs = FALSE;
bc67d8a6 5941 }
252b5132
RH		 5942 }
5943
5944 /* Step Three: Loop over the sections again, this time assigning
caf47ea6 5945 those that fit to the current segment and removing them from the
252b5132
RH		 5946 sections array; but making sure not to leave large gaps. Once all
5947 possible sections have been assigned to the current segment it is
5948 added to the list of built segments and if sections still remain
5949 to be assigned, a new segment is constructed before repeating
5950 the loop. */
5951 isec = 0;
5952 do
5953 {
bc67d8a6 5954 map->count = 0;
252b5132 5955 suggested_lma = 0;
0067a569 5956 first_suggested_lma = TRUE;
252b5132
RH		 5957
5958 /* Fill the current segment with sections that fit. */
bc67d8a6 5959 for (j = 0; j < section_count; j++)
252b5132 5960 {
bc67d8a6 5961 section = sections[j];
252b5132 5962
bc67d8a6 5963 if (section == NULL)
252b5132
RH		 5964 continue;
5965
bc67d8a6 5966 output_section = section->output_section;
252b5132 5967
bc67d8a6 5968 BFD_ASSERT (output_section != NULL);
c044fabd 5969
bc67d8a6
NC		 5970 if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr)
5971 || IS_COREFILE_NOTE (segment, section))
252b5132 5972 {
bc67d8a6 5973 if (map->count == 0)
252b5132
RH		 5974 {
5975 /* If the first section in a segment does not start at
bc67d8a6
NC		 5976 the beginning of the segment, then something is
5977 wrong. */
0067a569
AM		 5978 if (output_section->lma
5979 != (map->p_paddr
5980 + (map->includes_filehdr ? iehdr->e_ehsize : 0)
5981 + (map->includes_phdrs
5982 ? iehdr->e_phnum * iehdr->e_phentsize
5983 : 0)))
252b5132
RH		 5984 abort ();
5985 }
5986 else
5987 {
0067a569 5988 asection *prev_sec;
252b5132 5989
bc67d8a6 5990 prev_sec = map->sections[map->count - 1];
252b5132
RH		 5991
5992 /* If the gap between the end of the previous section
bc67d8a6
NC		 5993 and the start of this section is more than
5994 maxpagesize then we need to start a new segment. */
eea6121a 5995 if ((BFD_ALIGN (prev_sec->lma + prev_sec->size,
079e9a2f 5996 maxpagesize)
caf47ea6 5997 < BFD_ALIGN (output_section->lma, maxpagesize))
0067a569 5998 || (prev_sec->lma + prev_sec->size
079e9a2f 5999 > output_section->lma))
252b5132 6000 {
0067a569
AM		 6001 if (first_suggested_lma)
6002 {
6003 suggested_lma = output_section->lma;
6004 first_suggested_lma = FALSE;
6005 }
252b5132
RH		 6006
6007 continue;
6008 }
6009 }
6010
bc67d8a6 6011 map->sections[map->count++] = output_section;
252b5132
RH		 6012 ++isec;
6013 sections[j] = NULL;
b34976b6 6014 section->segment_mark = TRUE;
252b5132 6015 }
0067a569
AM		 6016 else if (first_suggested_lma)
6017 {
6018 suggested_lma = output_section->lma;
6019 first_suggested_lma = FALSE;
6020 }
252b5132
RH		 6021 }
6022
bc67d8a6 6023 BFD_ASSERT (map->count > 0);
252b5132
RH		 6024
6025 /* Add the current segment to the list of built segments. */
c044fabd
KH		 6026 *pointer_to_map = map;
6027 pointer_to_map = &map->next;
252b5132 6028
bc67d8a6 6029 if (isec < section_count)
252b5132
RH		 6030 {
6031 /* We still have not allocated all of the sections to
6032 segments. Create a new segment here, initialise it
6033 and carry on looping. */
dc810e39
AM		 6034 amt = sizeof (struct elf_segment_map);
6035 amt += ((bfd_size_type) section_count - 1) * sizeof (asection *);
a50b1753 6036 map = (struct elf_segment_map *) bfd_alloc (obfd, amt);
bc67d8a6 6037 if (map == NULL)
5ed6aba4
NC		 6038 {
6039 free (sections);
6040 return FALSE;
6041 }
252b5132
RH		 6042
6043 /* Initialise the fields of the segment map. Set the physical
6044 physical address to the LMA of the first section that has
6045 not yet been assigned. */
0067a569
AM		 6046 map->next = NULL;
6047 map->p_type = segment->p_type;
6048 map->p_flags = segment->p_flags;
6049 map->p_flags_valid = 1;
6050 map->p_paddr = suggested_lma;
5c44b38e 6051 map->p_paddr_valid = p_paddr_valid;
bc67d8a6 6052 map->includes_filehdr = 0;
0067a569 6053 map->includes_phdrs = 0;
252b5132
RH		 6054 }
6055 }
bc67d8a6 6056 while (isec < section_count);
252b5132
RH		 6057
6058 free (sections);
6059 }
6060
bc67d8a6
NC		 6061 elf_tdata (obfd)->segment_map = map_first;
6062
6063 /* If we had to estimate the number of program headers that were
9ad5cbcf 6064 going to be needed, then check our estimate now and adjust
bc67d8a6
NC		 6065 the offset if necessary. */
6066 if (phdr_adjust_seg != NULL)
6067 {
6068 unsigned int count;
c044fabd 6069
bc67d8a6 6070 for (count = 0, map = map_first; map != NULL; map = map->next)
c044fabd 6071 count++;
252b5132 6072
bc67d8a6
NC		 6073 if (count > phdr_adjust_num)
6074 phdr_adjust_seg->p_paddr
6075 -= (count - phdr_adjust_num) * iehdr->e_phentsize;
6076 }
c044fabd 6077
bc67d8a6 6078#undef SEGMENT_END
eecdbe52 6079#undef SECTION_SIZE
bc67d8a6
NC		 6080#undef IS_CONTAINED_BY_VMA
6081#undef IS_CONTAINED_BY_LMA
0efc80c8 6082#undef IS_NOTE
252b5132 6083#undef IS_COREFILE_NOTE
bc67d8a6 6084#undef IS_SOLARIS_PT_INTERP
9f17e2a6 6085#undef IS_SECTION_IN_INPUT_SEGMENT
bc67d8a6
NC		 6086#undef INCLUDE_SECTION_IN_SEGMENT
6087#undef SEGMENT_AFTER_SEGMENT
6088#undef SEGMENT_OVERLAPS
b34976b6 6089 return TRUE;
252b5132
RH		 6090}
6091
84d1d650
L		 6092/* Copy ELF program header information. */
6093
6094static bfd_boolean
6095copy_elf_program_header (bfd *ibfd, bfd *obfd)
6096{
6097 Elf_Internal_Ehdr *iehdr;
6098 struct elf_segment_map *map;
6099 struct elf_segment_map *map_first;
6100 struct elf_segment_map **pointer_to_map;
6101 Elf_Internal_Phdr *segment;
6102 unsigned int i;
6103 unsigned int num_segments;
6104 bfd_boolean phdr_included = FALSE;
88967714 6105 bfd_boolean p_paddr_valid;
84d1d650
L		 6106
6107 iehdr = elf_elfheader (ibfd);
6108
6109 map_first = NULL;
6110 pointer_to_map = &map_first;
6111
88967714
AM		 6112 /* If all the segment p_paddr fields are zero, don't set
6113 map->p_paddr_valid. */
6114 p_paddr_valid = FALSE;
84d1d650 6115 num_segments = elf_elfheader (ibfd)->e_phnum;
88967714
AM		 6116 for (i = 0, segment = elf_tdata (ibfd)->phdr;
6117 i < num_segments;
6118 i++, segment++)
6119 if (segment->p_paddr != 0)
6120 {
6121 p_paddr_valid = TRUE;
6122 break;
6123 }
6124
84d1d650
L		 6125 for (i = 0, segment = elf_tdata (ibfd)->phdr;
6126 i < num_segments;
6127 i++, segment++)
6128 {
6129 asection *section;
6130 unsigned int section_count;
6131 bfd_size_type amt;
6132 Elf_Internal_Shdr *this_hdr;
53020534 6133 asection *first_section = NULL;
a76e6f2f 6134 asection *lowest_section;
84d1d650 6135
84d1d650
L		 6136 /* Compute how many sections are in this segment. */
6137 for (section = ibfd->sections, section_count = 0;
6138 section != NULL;
6139 section = section->next)
6140 {
6141 this_hdr = &(elf_section_data(section)->this_hdr);
f4638467 6142 if (ELF_SECTION_IN_SEGMENT (this_hdr, segment))
3271a814 6143 {
a76e6f2f
AM		 6144 if (first_section == NULL)
6145 first_section = section;
3271a814
NS		 6146 section_count++;
6147 }
84d1d650
L		 6148 }
6149
6150 /* Allocate a segment map big enough to contain
6151 all of the sections we have selected. */
6152 amt = sizeof (struct elf_segment_map);
6153 if (section_count != 0)
6154 amt += ((bfd_size_type) section_count - 1) * sizeof (asection *);
a50b1753 6155 map = (struct elf_segment_map *) bfd_zalloc (obfd, amt);
84d1d650
L		 6156 if (map == NULL)
6157 return FALSE;
6158
6159 /* Initialize the fields of the output segment map with the
6160 input segment. */
6161 map->next = NULL;
6162 map->p_type = segment->p_type;
6163 map->p_flags = segment->p_flags;
6164 map->p_flags_valid = 1;
6165 map->p_paddr = segment->p_paddr;
88967714 6166 map->p_paddr_valid = p_paddr_valid;
3f570048
AM		 6167 map->p_align = segment->p_align;
6168 map->p_align_valid = 1;
3271a814 6169 map->p_vaddr_offset = 0;
84d1d650 6170
9433b9b1 6171 if (map->p_type == PT_GNU_RELRO)
b10a8ae0
L		 6172 {
6173 /* The PT_GNU_RELRO segment may contain the first a few
6174 bytes in the .got.plt section even if the whole .got.plt
6175 section isn't in the PT_GNU_RELRO segment. We won't
6176 change the size of the PT_GNU_RELRO segment. */
9433b9b1 6177 map->p_size = segment->p_memsz;
b10a8ae0
L		 6178 map->p_size_valid = 1;
6179 }
6180
84d1d650
L		 6181 /* Determine if this segment contains the ELF file header
6182 and if it contains the program headers themselves. */
6183 map->includes_filehdr = (segment->p_offset == 0
6184 && segment->p_filesz >= iehdr->e_ehsize);
6185
6186 map->includes_phdrs = 0;
6187 if (! phdr_included || segment->p_type != PT_LOAD)
6188 {
6189 map->includes_phdrs =
6190 (segment->p_offset <= (bfd_vma) iehdr->e_phoff
6191 && (segment->p_offset + segment->p_filesz
6192 >= ((bfd_vma) iehdr->e_phoff
6193 + iehdr->e_phnum * iehdr->e_phentsize)));
6194
6195 if (segment->p_type == PT_LOAD && map->includes_phdrs)
6196 phdr_included = TRUE;
6197 }
6198
a76e6f2f 6199 lowest_section = first_section;
84d1d650
L		 6200 if (section_count != 0)
6201 {
6202 unsigned int isec = 0;
6203
53020534 6204 for (section = first_section;
84d1d650
L		 6205 section != NULL;
6206 section = section->next)
6207 {
6208 this_hdr = &(elf_section_data(section)->this_hdr);
f4638467 6209 if (ELF_SECTION_IN_SEGMENT (this_hdr, segment))
53020534
L		 6210 {
6211 map->sections[isec++] = section->output_section;
a76e6f2f
AM		 6212 if (section->lma < lowest_section->lma)
6213 lowest_section = section;
6214 if ((section->flags & SEC_ALLOC) != 0)
6215 {
6216 bfd_vma seg_off;
6217
6218 /* Section lmas are set up from PT_LOAD header
6219 p_paddr in _bfd_elf_make_section_from_shdr.
6220 If this header has a p_paddr that disagrees
6221 with the section lma, flag the p_paddr as
6222 invalid. */
6223 if ((section->flags & SEC_LOAD) != 0)
6224 seg_off = this_hdr->sh_offset - segment->p_offset;
6225 else
6226 seg_off = this_hdr->sh_addr - segment->p_vaddr;
6227 if (section->lma - segment->p_paddr != seg_off)
6228 map->p_paddr_valid = FALSE;
6229 }
53020534
L		 6230 if (isec == section_count)
6231 break;
6232 }
84d1d650
L		 6233 }
6234 }
6235
a76e6f2f
AM		 6236 if (map->includes_filehdr && lowest_section != NULL)
6237 /* We need to keep the space used by the headers fixed. */
6238 map->header_size = lowest_section->vma - segment->p_vaddr;
d324f6d6 6239
a76e6f2f
AM		 6240 if (!map->includes_phdrs
6241 && !map->includes_filehdr
6242 && map->p_paddr_valid)
6243 /* There is some other padding before the first section. */
6244 map->p_vaddr_offset = ((lowest_section ? lowest_section->lma : 0)
6245 - segment->p_paddr);
6246
84d1d650
L		 6247 map->count = section_count;
6248 *pointer_to_map = map;
6249 pointer_to_map = &map->next;
6250 }
6251
6252 elf_tdata (obfd)->segment_map = map_first;
6253 return TRUE;
6254}
6255
6256/* Copy private BFD data. This copies or rewrites ELF program header
6257 information. */
6258
6259static bfd_boolean
6260copy_private_bfd_data (bfd *ibfd, bfd *obfd)
6261{
84d1d650
L		 6262 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
6263 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
6264 return TRUE;
6265
6266 if (elf_tdata (ibfd)->phdr == NULL)
6267 return TRUE;
6268
6269 if (ibfd->xvec == obfd->xvec)
6270 {
cb3ff1e5
NC		 6271 /* Check to see if any sections in the input BFD
6272 covered by ELF program header have changed. */
d55ce4e2 6273 Elf_Internal_Phdr *segment;
84d1d650
L		 6274 asection *section, *osec;
6275 unsigned int i, num_segments;
6276 Elf_Internal_Shdr *this_hdr;
147d51c2
L		 6277 const struct elf_backend_data *bed;
6278
6279 bed = get_elf_backend_data (ibfd);
6280
6281 /* Regenerate the segment map if p_paddr is set to 0. */
6282 if (bed->want_p_paddr_set_to_zero)
6283 goto rewrite;
84d1d650
L		 6284
6285 /* Initialize the segment mark field. */
6286 for (section = obfd->sections; section != NULL;
6287 section = section->next)
6288 section->segment_mark = FALSE;
6289
6290 num_segments = elf_elfheader (ibfd)->e_phnum;
6291 for (i = 0, segment = elf_tdata (ibfd)->phdr;
6292 i < num_segments;
6293 i++, segment++)
6294 {
5f6999aa
NC		 6295 /* PR binutils/3535. The Solaris linker always sets the p_paddr
6296 and p_memsz fields of special segments (DYNAMIC, INTERP) to 0
6297 which severly confuses things, so always regenerate the segment
6298 map in this case. */
6299 if (segment->p_paddr == 0
6300 && segment->p_memsz == 0
6301 && (segment->p_type == PT_INTERP || segment->p_type == PT_DYNAMIC))
cb3ff1e5 6302 goto rewrite;
5f6999aa 6303
84d1d650
L		 6304 for (section = ibfd->sections;
6305 section != NULL; section = section->next)
6306 {
6307 /* We mark the output section so that we know it comes
6308 from the input BFD. */
6309 osec = section->output_section;
6310 if (osec)
6311 osec->segment_mark = TRUE;
6312
6313 /* Check if this section is covered by the segment. */
6314 this_hdr = &(elf_section_data(section)->this_hdr);
f4638467 6315 if (ELF_SECTION_IN_SEGMENT (this_hdr, segment))
84d1d650
L		 6316 {
6317 /* FIXME: Check if its output section is changed or
6318 removed. What else do we need to check? */
6319 if (osec == NULL
6320 || section->flags != osec->flags
6321 || section->lma != osec->lma
6322 || section->vma != osec->vma
6323 || section->size != osec->size
6324 || section->rawsize != osec->rawsize
6325 || section->alignment_power != osec->alignment_power)
6326 goto rewrite;
6327 }
6328 }
6329 }
6330
cb3ff1e5 6331 /* Check to see if any output section do not come from the
84d1d650
L		 6332 input BFD. */
6333 for (section = obfd->sections; section != NULL;
6334 section = section->next)
6335 {
6336 if (section->segment_mark == FALSE)
6337 goto rewrite;
6338 else
6339 section->segment_mark = FALSE;
6340 }
6341
6342 return copy_elf_program_header (ibfd, obfd);
6343 }
6344
6345rewrite:
6346 return rewrite_elf_program_header (ibfd, obfd);
6347}
6348
ccd2ec6a
L		 6349/* Initialize private output section information from input section. */
6350
6351bfd_boolean
6352_bfd_elf_init_private_section_data (bfd *ibfd,
6353 asection *isec,
6354 bfd *obfd,
6355 asection *osec,
6356 struct bfd_link_info *link_info)
6357
6358{
6359 Elf_Internal_Shdr *ihdr, *ohdr;
dfa7b0b8 6360 bfd_boolean final_link = link_info != NULL && !link_info->relocatable;
ccd2ec6a
L		 6361
6362 if (ibfd->xvec->flavour != bfd_target_elf_flavour
6363 || obfd->xvec->flavour != bfd_target_elf_flavour)
6364 return TRUE;
6365
ba85c43e
NC		 6366 BFD_ASSERT (elf_section_data (osec) != NULL);
6367
dfa7b0b8
AM		 6368 /* For objcopy and relocatable link, don't copy the output ELF
6369 section type from input if the output BFD section flags have been
6370 set to something different. For a final link allow some flags
6371 that the linker clears to differ. */
42bb2e33 6372 if (elf_section_type (osec) == SHT_NULL
dfa7b0b8
AM		 6373 && (osec->flags == isec->flags
6374 || (final_link
6375 && ((osec->flags ^ isec->flags)
0814be7d 6376 & ~(SEC_LINK_ONCE | SEC_LINK_DUPLICATES | SEC_RELOC)) == 0)))
42bb2e33 6377 elf_section_type (osec) = elf_section_type (isec);
d270463e
L		 6378
6379 /* FIXME: Is this correct for all OS/PROC specific flags? */
6380 elf_section_flags (osec) |= (elf_section_flags (isec)
6381 & (SHF_MASKOS | SHF_MASKPROC));
ccd2ec6a
L		 6382
6383 /* Set things up for objcopy and relocatable link. The output
6384 SHT_GROUP section will have its elf_next_in_group pointing back
6385 to the input group members. Ignore linker created group section.
6386 See elfNN_ia64_object_p in elfxx-ia64.c. */
dfa7b0b8 6387 if (!final_link)
ccd2ec6a
L		 6388 {
6389 if (elf_sec_group (isec) == NULL
6390 || (elf_sec_group (isec)->flags & SEC_LINKER_CREATED) == 0)
6391 {
6392 if (elf_section_flags (isec) & SHF_GROUP)
6393 elf_section_flags (osec) |= SHF_GROUP;
6394 elf_next_in_group (osec) = elf_next_in_group (isec);
9659de1c 6395 elf_section_data (osec)->group = elf_section_data (isec)->group;
ccd2ec6a
L		 6396 }
6397 }
6398
6399 ihdr = &elf_section_data (isec)->this_hdr;
6400
6401 /* We need to handle elf_linked_to_section for SHF_LINK_ORDER. We
6402 don't use the output section of the linked-to section since it
6403 may be NULL at this point. */
6404 if ((ihdr->sh_flags & SHF_LINK_ORDER) != 0)
6405 {
6406 ohdr = &elf_section_data (osec)->this_hdr;
6407 ohdr->sh_flags |= SHF_LINK_ORDER;
6408 elf_linked_to_section (osec) = elf_linked_to_section (isec);
6409 }
6410
6411 osec->use_rela_p = isec->use_rela_p;
6412
6413 return TRUE;
6414}
6415
252b5132
RH		 6416/* Copy private section information. This copies over the entsize
6417 field, and sometimes the info field. */
6418
b34976b6 6419bfd_boolean
217aa764
AM		 6420_bfd_elf_copy_private_section_data (bfd *ibfd,
6421 asection *isec,
6422 bfd *obfd,
6423 asection *osec)
252b5132
RH		 6424{
6425 Elf_Internal_Shdr *ihdr, *ohdr;
6426
6427 if (ibfd->xvec->flavour != bfd_target_elf_flavour
6428 || obfd->xvec->flavour != bfd_target_elf_flavour)
b34976b6 6429 return TRUE;
252b5132 6430
252b5132
RH		 6431 ihdr = &elf_section_data (isec)->this_hdr;
6432 ohdr = &elf_section_data (osec)->this_hdr;
6433
6434 ohdr->sh_entsize = ihdr->sh_entsize;
6435
6436 if (ihdr->sh_type == SHT_SYMTAB
6437 || ihdr->sh_type == SHT_DYNSYM
6438 || ihdr->sh_type == SHT_GNU_verneed
6439 || ihdr->sh_type == SHT_GNU_verdef)
6440 ohdr->sh_info = ihdr->sh_info;
6441
ccd2ec6a
L		 6442 return _bfd_elf_init_private_section_data (ibfd, isec, obfd, osec,
6443 NULL);
252b5132
RH		 6444}
6445
d0bf826b
AM		 6446/* Look at all the SHT_GROUP sections in IBFD, making any adjustments
6447 necessary if we are removing either the SHT_GROUP section or any of
6448 the group member sections. DISCARDED is the value that a section's
6449 output_section has if the section will be discarded, NULL when this
6450 function is called from objcopy, bfd_abs_section_ptr when called
6451 from the linker. */
80fccad2
BW		 6452
6453bfd_boolean
d0bf826b 6454_bfd_elf_fixup_group_sections (bfd *ibfd, asection *discarded)
80fccad2 6455{
30288845
AM		 6456 asection *isec;
6457
30288845 6458 for (isec = ibfd->sections; isec != NULL; isec = isec->next)
415f38a6 6459 if (elf_section_type (isec) == SHT_GROUP)
30288845
AM		 6460 {
6461 asection *first = elf_next_in_group (isec);
6462 asection *s = first;
d0bf826b
AM		 6463 bfd_size_type removed = 0;
6464
30288845
AM		 6465 while (s != NULL)
6466 {
415f38a6
AM		 6467 /* If this member section is being output but the
6468 SHT_GROUP section is not, then clear the group info
6469 set up by _bfd_elf_copy_private_section_data. */
d0bf826b
AM		 6470 if (s->output_section != discarded
6471 && isec->output_section == discarded)
30288845
AM		 6472 {
6473 elf_section_flags (s->output_section) &= ~SHF_GROUP;
6474 elf_group_name (s->output_section) = NULL;
6475 }
415f38a6
AM		 6476 /* Conversely, if the member section is not being output
6477 but the SHT_GROUP section is, then adjust its size. */
d0bf826b
AM		 6478 else if (s->output_section == discarded
6479 && isec->output_section != discarded)
6480 removed += 4;
30288845
AM		 6481 s = elf_next_in_group (s);
6482 if (s == first)
6483 break;
6484 }
d0bf826b
AM		 6485 if (removed != 0)
6486 {
6487 if (discarded != NULL)
6488 {
6489 /* If we've been called for ld -r, then we need to
6490 adjust the input section size. This function may
6491 be called multiple times, so save the original
6492 size. */
6493 if (isec->rawsize == 0)
6494 isec->rawsize = isec->size;
6495 isec->size = isec->rawsize - removed;
6496 }
6497 else
6498 {
6499 /* Adjust the output section size when called from
6500 objcopy. */
6501 isec->output_section->size -= removed;
6502 }
6503 }
30288845
AM		 6504 }
6505
80fccad2
BW		 6506 return TRUE;
6507}
6508
d0bf826b
AM		 6509/* Copy private header information. */
6510
6511bfd_boolean
6512_bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd)
6513{
6514 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
6515 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
6516 return TRUE;
6517
6518 /* Copy over private BFD data if it has not already been copied.
6519 This must be done here, rather than in the copy_private_bfd_data
6520 entry point, because the latter is called after the section
6521 contents have been set, which means that the program headers have
6522 already been worked out. */
6523 if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL)
6524 {
6525 if (! copy_private_bfd_data (ibfd, obfd))
6526 return FALSE;
6527 }
6528
6529 return _bfd_elf_fixup_group_sections (ibfd, NULL);
6530}
6531
252b5132
RH		 6532/* Copy private symbol information. If this symbol is in a section
6533 which we did not map into a BFD section, try to map the section
6534 index correctly. We use special macro definitions for the mapped
6535 section indices; these definitions are interpreted by the
6536 swap_out_syms function. */
6537
9ad5cbcf
AM		 6538#define MAP_ONESYMTAB (SHN_HIOS + 1)
6539#define MAP_DYNSYMTAB (SHN_HIOS + 2)
6540#define MAP_STRTAB (SHN_HIOS + 3)
6541#define MAP_SHSTRTAB (SHN_HIOS + 4)
6542#define MAP_SYM_SHNDX (SHN_HIOS + 5)
252b5132 6543
b34976b6 6544bfd_boolean
217aa764
AM		 6545_bfd_elf_copy_private_symbol_data (bfd *ibfd,
6546 asymbol *isymarg,
6547 bfd *obfd,
6548 asymbol *osymarg)
252b5132
RH		 6549{
6550 elf_symbol_type *isym, *osym;
6551
6552 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
6553 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 6554 return TRUE;
252b5132
RH		 6555
6556 isym = elf_symbol_from (ibfd, isymarg);
6557 osym = elf_symbol_from (obfd, osymarg);
6558
6559 if (isym != NULL
8424d8f5 6560 && isym->internal_elf_sym.st_shndx != 0
252b5132
RH		 6561 && osym != NULL
6562 && bfd_is_abs_section (isym->symbol.section))
6563 {
6564 unsigned int shndx;
6565
6566 shndx = isym->internal_elf_sym.st_shndx;
6567 if (shndx == elf_onesymtab (ibfd))
6568 shndx = MAP_ONESYMTAB;
6569 else if (shndx == elf_dynsymtab (ibfd))
6570 shndx = MAP_DYNSYMTAB;
6571 else if (shndx == elf_tdata (ibfd)->strtab_section)
6572 shndx = MAP_STRTAB;
6573 else if (shndx == elf_tdata (ibfd)->shstrtab_section)
6574 shndx = MAP_SHSTRTAB;
9ad5cbcf
AM		 6575 else if (shndx == elf_tdata (ibfd)->symtab_shndx_section)
6576 shndx = MAP_SYM_SHNDX;
252b5132
RH		 6577 osym->internal_elf_sym.st_shndx = shndx;
6578 }
6579
b34976b6 6580 return TRUE;
252b5132
RH		 6581}
6582
6583/* Swap out the symbols. */
6584
b34976b6 6585static bfd_boolean
217aa764
AM		 6586swap_out_syms (bfd *abfd,
6587 struct bfd_strtab_hash **sttp,
6588 int relocatable_p)
252b5132 6589{
9c5bfbb7 6590 const struct elf_backend_data *bed;
079e9a2f
AM		 6591 int symcount;
6592 asymbol **syms;
6593 struct bfd_strtab_hash *stt;
6594 Elf_Internal_Shdr *symtab_hdr;
9ad5cbcf 6595 Elf_Internal_Shdr *symtab_shndx_hdr;
079e9a2f 6596 Elf_Internal_Shdr *symstrtab_hdr;
f075ee0c
AM		 6597 bfd_byte *outbound_syms;
6598 bfd_byte *outbound_shndx;
079e9a2f
AM		 6599 int idx;
6600 bfd_size_type amt;
174fd7f9 6601 bfd_boolean name_local_sections;
252b5132
RH		 6602
6603 if (!elf_map_symbols (abfd))
b34976b6 6604 return FALSE;
252b5132 6605
c044fabd 6606 /* Dump out the symtabs. */
079e9a2f
AM		 6607 stt = _bfd_elf_stringtab_init ();
6608 if (stt == NULL)
b34976b6 6609 return FALSE;
252b5132 6610
079e9a2f
AM		 6611 bed = get_elf_backend_data (abfd);
6612 symcount = bfd_get_symcount (abfd);
6613 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
6614 symtab_hdr->sh_type = SHT_SYMTAB;
6615 symtab_hdr->sh_entsize = bed->s->sizeof_sym;
6616 symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1);
6617 symtab_hdr->sh_info = elf_num_locals (abfd) + 1;
72de5009 6618 symtab_hdr->sh_addralign = (bfd_vma) 1 << bed->s->log_file_align;
079e9a2f
AM		 6619
6620 symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr;
6621 symstrtab_hdr->sh_type = SHT_STRTAB;
6622
a50b1753
NC		 6623 outbound_syms = (bfd_byte *) bfd_alloc2 (abfd, 1 + symcount,
6624 bed->s->sizeof_sym);
079e9a2f 6625 if (outbound_syms == NULL)
5ed6aba4
NC		 6626 {
6627 _bfd_stringtab_free (stt);
6628 return FALSE;
6629 }
217aa764 6630 symtab_hdr->contents = outbound_syms;
252b5132 6631
9ad5cbcf
AM		 6632 outbound_shndx = NULL;
6633 symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
6634 if (symtab_shndx_hdr->sh_name != 0)
6635 {
6636 amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx);
a50b1753
NC		 6637 outbound_shndx = (bfd_byte *)
6638 bfd_zalloc2 (abfd, 1 + symcount, sizeof (Elf_External_Sym_Shndx));
9ad5cbcf 6639 if (outbound_shndx == NULL)
5ed6aba4
NC		 6640 {
6641 _bfd_stringtab_free (stt);
6642 return FALSE;
6643 }
6644
9ad5cbcf
AM		 6645 symtab_shndx_hdr->contents = outbound_shndx;
6646 symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX;
6647 symtab_shndx_hdr->sh_size = amt;
6648 symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx);
6649 symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx);
6650 }
6651
589e6347 6652 /* Now generate the data (for "contents"). */
079e9a2f
AM		 6653 {
6654 /* Fill in zeroth symbol and swap it out. */
6655 Elf_Internal_Sym sym;
6656 sym.st_name = 0;
6657 sym.st_value = 0;
6658 sym.st_size = 0;
6659 sym.st_info = 0;
6660 sym.st_other = 0;
6661 sym.st_shndx = SHN_UNDEF;
35fc36a8 6662 sym.st_target_internal = 0;
9ad5cbcf 6663 bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx);
079e9a2f 6664 outbound_syms += bed->s->sizeof_sym;
9ad5cbcf
AM		 6665 if (outbound_shndx != NULL)
6666 outbound_shndx += sizeof (Elf_External_Sym_Shndx);
079e9a2f 6667 }
252b5132 6668
174fd7f9
RS		 6669 name_local_sections
6670 = (bed->elf_backend_name_local_section_symbols
6671 && bed->elf_backend_name_local_section_symbols (abfd));
6672
079e9a2f
AM		 6673 syms = bfd_get_outsymbols (abfd);
6674 for (idx = 0; idx < symcount; idx++)
252b5132 6675 {
252b5132 6676 Elf_Internal_Sym sym;
079e9a2f
AM		 6677 bfd_vma value = syms[idx]->value;
6678 elf_symbol_type *type_ptr;
6679 flagword flags = syms[idx]->flags;
6680 int type;
252b5132 6681
174fd7f9
RS		 6682 if (!name_local_sections
6683 && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM)
079e9a2f
AM		 6684 {
6685 /* Local section symbols have no name. */
6686 sym.st_name = 0;
6687 }
6688 else
6689 {
6690 sym.st_name = (unsigned long) _bfd_stringtab_add (stt,
6691 syms[idx]->name,
b34976b6 6692 TRUE, FALSE);
079e9a2f 6693 if (sym.st_name == (unsigned long) -1)
5ed6aba4
NC		 6694 {
6695 _bfd_stringtab_free (stt);
6696 return FALSE;
6697 }
079e9a2f 6698 }
252b5132 6699
079e9a2f 6700 type_ptr = elf_symbol_from (abfd, syms[idx]);
252b5132 6701
079e9a2f
AM		 6702 if ((flags & BSF_SECTION_SYM) == 0
6703 && bfd_is_com_section (syms[idx]->section))
6704 {
6705 /* ELF common symbols put the alignment into the `value' field,
6706 and the size into the `size' field. This is backwards from
6707 how BFD handles it, so reverse it here. */
6708 sym.st_size = value;
6709 if (type_ptr == NULL
6710 || type_ptr->internal_elf_sym.st_value == 0)
6711 sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value));
6712 else
6713 sym.st_value = type_ptr->internal_elf_sym.st_value;
6714 sym.st_shndx = _bfd_elf_section_from_bfd_section
6715 (abfd, syms[idx]->section);
6716 }
6717 else
6718 {
6719 asection *sec = syms[idx]->section;
cb33740c 6720 unsigned int shndx;
252b5132 6721
079e9a2f
AM		 6722 if (sec->output_section)
6723 {
6724 value += sec->output_offset;
6725 sec = sec->output_section;
6726 }
589e6347 6727
079e9a2f
AM		 6728 /* Don't add in the section vma for relocatable output. */
6729 if (! relocatable_p)
6730 value += sec->vma;
6731 sym.st_value = value;
6732 sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0;
6733
6734 if (bfd_is_abs_section (sec)
6735 && type_ptr != NULL
6736 && type_ptr->internal_elf_sym.st_shndx != 0)
6737 {
6738 /* This symbol is in a real ELF section which we did
6739 not create as a BFD section. Undo the mapping done
6740 by copy_private_symbol_data. */
6741 shndx = type_ptr->internal_elf_sym.st_shndx;
6742 switch (shndx)
6743 {
6744 case MAP_ONESYMTAB:
6745 shndx = elf_onesymtab (abfd);
6746 break;
6747 case MAP_DYNSYMTAB:
6748 shndx = elf_dynsymtab (abfd);
6749 break;
6750 case MAP_STRTAB:
6751 shndx = elf_tdata (abfd)->strtab_section;
6752 break;
6753 case MAP_SHSTRTAB:
6754 shndx = elf_tdata (abfd)->shstrtab_section;
6755 break;
9ad5cbcf
AM		 6756 case MAP_SYM_SHNDX:
6757 shndx = elf_tdata (abfd)->symtab_shndx_section;
6758 break;
079e9a2f
AM		 6759 default:
6760 break;
6761 }
6762 }
6763 else
6764 {
6765 shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
252b5132 6766
cb33740c 6767 if (shndx == SHN_BAD)
079e9a2f
AM		 6768 {
6769 asection *sec2;
6770
6771 /* Writing this would be a hell of a lot easier if
6772 we had some decent documentation on bfd, and
6773 knew what to expect of the library, and what to
6774 demand of applications. For example, it
6775 appears that `objcopy' might not set the
6776 section of a symbol to be a section that is
6777 actually in the output file. */
6778 sec2 = bfd_get_section_by_name (abfd, sec->name);
589e6347
NC		 6779 if (sec2 == NULL)
6780 {
6781 _bfd_error_handler (_("\
6782Unable to find equivalent output section for symbol '%s' from section '%s'"),
6783 syms[idx]->name ? syms[idx]->name : "<Local sym>",
6784 sec->name);
811072d8 6785 bfd_set_error (bfd_error_invalid_operation);
5ed6aba4 6786 _bfd_stringtab_free (stt);
589e6347
NC		 6787 return FALSE;
6788 }
811072d8 6789
079e9a2f 6790 shndx = _bfd_elf_section_from_bfd_section (abfd, sec2);
cb33740c 6791 BFD_ASSERT (shndx != SHN_BAD);
079e9a2f
AM		 6792 }
6793 }
252b5132 6794
079e9a2f
AM		 6795 sym.st_shndx = shndx;
6796 }
252b5132 6797
13ae64f3
JJ		 6798 if ((flags & BSF_THREAD_LOCAL) != 0)
6799 type = STT_TLS;
d8045f23
NC		 6800 else if ((flags & BSF_GNU_INDIRECT_FUNCTION) != 0)
6801 type = STT_GNU_IFUNC;
13ae64f3 6802 else if ((flags & BSF_FUNCTION) != 0)
079e9a2f
AM		 6803 type = STT_FUNC;
6804 else if ((flags & BSF_OBJECT) != 0)
6805 type = STT_OBJECT;
d9352518
DB		 6806 else if ((flags & BSF_RELC) != 0)
6807 type = STT_RELC;
6808 else if ((flags & BSF_SRELC) != 0)
6809 type = STT_SRELC;
079e9a2f
AM		 6810 else
6811 type = STT_NOTYPE;
252b5132 6812
13ae64f3
JJ		 6813 if (syms[idx]->section->flags & SEC_THREAD_LOCAL)
6814 type = STT_TLS;
6815
589e6347 6816 /* Processor-specific types. */
079e9a2f
AM		 6817 if (type_ptr != NULL
6818 && bed->elf_backend_get_symbol_type)
6819 type = ((*bed->elf_backend_get_symbol_type)
6820 (&type_ptr->internal_elf_sym, type));
252b5132 6821
079e9a2f
AM		 6822 if (flags & BSF_SECTION_SYM)
6823 {
6824 if (flags & BSF_GLOBAL)
6825 sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
6826 else
6827 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
6828 }
6829 else if (bfd_is_com_section (syms[idx]->section))
0a40daed 6830 {
504b7d20 6831#ifdef USE_STT_COMMON
0a40daed
MK		 6832 if (type == STT_OBJECT)
6833 sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_COMMON);
6834 else
504b7d20 6835#endif
c91e322a 6836 sym.st_info = ELF_ST_INFO (STB_GLOBAL, type);
0a40daed 6837 }
079e9a2f
AM		 6838 else if (bfd_is_und_section (syms[idx]->section))
6839 sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK)
6840 ? STB_WEAK
6841 : STB_GLOBAL),
6842 type);
6843 else if (flags & BSF_FILE)
6844 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE);
6845 else
6846 {
6847 int bind = STB_LOCAL;
252b5132 6848
079e9a2f
AM		 6849 if (flags & BSF_LOCAL)
6850 bind = STB_LOCAL;
3e7a7d11
NC		 6851 else if (flags & BSF_GNU_UNIQUE)
6852 bind = STB_GNU_UNIQUE;
079e9a2f
AM		 6853 else if (flags & BSF_WEAK)
6854 bind = STB_WEAK;
6855 else if (flags & BSF_GLOBAL)
6856 bind = STB_GLOBAL;
252b5132 6857
079e9a2f
AM		 6858 sym.st_info = ELF_ST_INFO (bind, type);
6859 }
252b5132 6860
079e9a2f 6861 if (type_ptr != NULL)
35fc36a8
RS		 6862 {
6863 sym.st_other = type_ptr->internal_elf_sym.st_other;
6864 sym.st_target_internal
6865 = type_ptr->internal_elf_sym.st_target_internal;
6866 }
079e9a2f 6867 else
35fc36a8
RS		 6868 {
6869 sym.st_other = 0;
6870 sym.st_target_internal = 0;
6871 }
252b5132 6872
9ad5cbcf 6873 bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx);
079e9a2f 6874 outbound_syms += bed->s->sizeof_sym;
9ad5cbcf
AM		 6875 if (outbound_shndx != NULL)
6876 outbound_shndx += sizeof (Elf_External_Sym_Shndx);
079e9a2f 6877 }
252b5132 6878
079e9a2f
AM		 6879 *sttp = stt;
6880 symstrtab_hdr->sh_size = _bfd_stringtab_size (stt);
6881 symstrtab_hdr->sh_type = SHT_STRTAB;
252b5132 6882
079e9a2f
AM		 6883 symstrtab_hdr->sh_flags = 0;
6884 symstrtab_hdr->sh_addr = 0;
6885 symstrtab_hdr->sh_entsize = 0;
6886 symstrtab_hdr->sh_link = 0;
6887 symstrtab_hdr->sh_info = 0;
6888 symstrtab_hdr->sh_addralign = 1;
252b5132 6889
b34976b6 6890 return TRUE;
252b5132
RH		 6891}
6892
6893/* Return the number of bytes required to hold the symtab vector.
6894
6895 Note that we base it on the count plus 1, since we will null terminate
6896 the vector allocated based on this size. However, the ELF symbol table
6897 always has a dummy entry as symbol #0, so it ends up even. */
6898
6899long
217aa764 6900_bfd_elf_get_symtab_upper_bound (bfd *abfd)
252b5132
RH		 6901{
6902 long symcount;
6903 long symtab_size;
6904 Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr;
6905
6906 symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym;
b99d1833
AM		 6907 symtab_size = (symcount + 1) * (sizeof (asymbol *));
6908 if (symcount > 0)
6909 symtab_size -= sizeof (asymbol *);
252b5132
RH		 6910
6911 return symtab_size;
6912}
6913
6914long
217aa764 6915_bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd)
252b5132
RH		 6916{
6917 long symcount;
6918 long symtab_size;
6919 Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr;
6920
6921 if (elf_dynsymtab (abfd) == 0)
6922 {
6923 bfd_set_error (bfd_error_invalid_operation);
6924 return -1;
6925 }
6926
6927 symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym;
b99d1833
AM		 6928 symtab_size = (symcount + 1) * (sizeof (asymbol *));
6929 if (symcount > 0)
6930 symtab_size -= sizeof (asymbol *);
252b5132
RH		 6931
6932 return symtab_size;
6933}
6934
6935long
217aa764
AM		 6936_bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED,
6937 sec_ptr asect)
252b5132
RH		 6938{
6939 return (asect->reloc_count + 1) * sizeof (arelent *);
6940}
6941
6942/* Canonicalize the relocs. */
6943
6944long
217aa764
AM		 6945_bfd_elf_canonicalize_reloc (bfd *abfd,
6946 sec_ptr section,
6947 arelent **relptr,
6948 asymbol **symbols)
252b5132
RH		 6949{
6950 arelent *tblptr;
6951 unsigned int i;
9c5bfbb7 6952 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
252b5132 6953
b34976b6 6954 if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE))
252b5132
RH		 6955 return -1;
6956
6957 tblptr = section->relocation;
6958 for (i = 0; i < section->reloc_count; i++)
6959 *relptr++ = tblptr++;
6960
6961 *relptr = NULL;
6962
6963 return section->reloc_count;
6964}
6965
6966long
6cee3f79 6967_bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation)
252b5132 6968{
9c5bfbb7 6969 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
217aa764 6970 long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE);
252b5132
RH		 6971
6972 if (symcount >= 0)
6973 bfd_get_symcount (abfd) = symcount;
6974 return symcount;
6975}
6976
6977long
217aa764
AM		 6978_bfd_elf_canonicalize_dynamic_symtab (bfd *abfd,
6979 asymbol **allocation)
252b5132 6980{
9c5bfbb7 6981 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
217aa764 6982 long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE);
1f70368c
DJ		 6983
6984 if (symcount >= 0)
6985 bfd_get_dynamic_symcount (abfd) = symcount;
6986 return symcount;
252b5132
RH		 6987}
6988
8615f3f2
AM		 6989/* Return the size required for the dynamic reloc entries. Any loadable
6990 section that was actually installed in the BFD, and has type SHT_REL
6991 or SHT_RELA, and uses the dynamic symbol table, is considered to be a
6992 dynamic reloc section. */
252b5132
RH		 6993
6994long
217aa764 6995_bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd)
252b5132
RH		 6996{
6997 long ret;
6998 asection *s;
6999
7000 if (elf_dynsymtab (abfd) == 0)
7001 {
7002 bfd_set_error (bfd_error_invalid_operation);
7003 return -1;
7004 }
7005
7006 ret = sizeof (arelent *);
7007 for (s = abfd->sections; s != NULL; s = s->next)
266b05cf 7008 if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
252b5132
RH		 7009 && (elf_section_data (s)->this_hdr.sh_type == SHT_REL
7010 || elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
eea6121a 7011 ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize)
252b5132
RH		 7012 * sizeof (arelent *));
7013
7014 return ret;
7015}
7016
8615f3f2
AM		 7017/* Canonicalize the dynamic relocation entries. Note that we return the
7018 dynamic relocations as a single block, although they are actually
7019 associated with particular sections; the interface, which was
7020 designed for SunOS style shared libraries, expects that there is only
7021 one set of dynamic relocs. Any loadable section that was actually
7022 installed in the BFD, and has type SHT_REL or SHT_RELA, and uses the
7023 dynamic symbol table, is considered to be a dynamic reloc section. */
252b5132
RH		 7024
7025long
217aa764
AM		 7026_bfd_elf_canonicalize_dynamic_reloc (bfd *abfd,
7027 arelent **storage,
7028 asymbol **syms)
252b5132 7029{
217aa764 7030 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
252b5132
RH		 7031 asection *s;
7032 long ret;
7033
7034 if (elf_dynsymtab (abfd) == 0)
7035 {
7036 bfd_set_error (bfd_error_invalid_operation);
7037 return -1;
7038 }
7039
7040 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
7041 ret = 0;
7042 for (s = abfd->sections; s != NULL; s = s->next)
7043 {
266b05cf 7044 if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
252b5132
RH		 7045 && (elf_section_data (s)->this_hdr.sh_type == SHT_REL
7046 || elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
7047 {
7048 arelent *p;
7049 long count, i;
7050
b34976b6 7051 if (! (*slurp_relocs) (abfd, s, syms, TRUE))
252b5132 7052 return -1;
eea6121a 7053 count = s->size / elf_section_data (s)->this_hdr.sh_entsize;
252b5132
RH		 7054 p = s->relocation;
7055 for (i = 0; i < count; i++)
7056 *storage++ = p++;
7057 ret += count;
7058 }
7059 }
7060
7061 *storage = NULL;
7062
7063 return ret;
7064}
7065\f
7066/* Read in the version information. */
7067
b34976b6 7068bfd_boolean
fc0e6df6 7069_bfd_elf_slurp_version_tables (bfd *abfd, bfd_boolean default_imported_symver)
252b5132
RH		 7070{
7071 bfd_byte *contents = NULL;
fc0e6df6
PB		 7072 unsigned int freeidx = 0;
7073
7074 if (elf_dynverref (abfd) != 0)
7075 {
7076 Elf_Internal_Shdr *hdr;
7077 Elf_External_Verneed *everneed;
7078 Elf_Internal_Verneed *iverneed;
7079 unsigned int i;
d0fb9a8d 7080 bfd_byte *contents_end;
fc0e6df6
PB		 7081
7082 hdr = &elf_tdata (abfd)->dynverref_hdr;
7083
a50b1753
NC		 7084 elf_tdata (abfd)->verref = (Elf_Internal_Verneed *)
7085 bfd_zalloc2 (abfd, hdr->sh_info, sizeof (Elf_Internal_Verneed));
fc0e6df6
PB		 7086 if (elf_tdata (abfd)->verref == NULL)
7087 goto error_return;
7088
7089 elf_tdata (abfd)->cverrefs = hdr->sh_info;
7090
a50b1753 7091 contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
fc0e6df6 7092 if (contents == NULL)
d0fb9a8d
JJ		 7093 {
7094error_return_verref:
7095 elf_tdata (abfd)->verref = NULL;
7096 elf_tdata (abfd)->cverrefs = 0;
7097 goto error_return;
7098 }
fc0e6df6
PB		 7099 if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
7100 || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size)
d0fb9a8d 7101 goto error_return_verref;
fc0e6df6 7102
d0fb9a8d
JJ		 7103 if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verneed))
7104 goto error_return_verref;
7105
7106 BFD_ASSERT (sizeof (Elf_External_Verneed)
7107 == sizeof (Elf_External_Vernaux));
7108 contents_end = contents + hdr->sh_size - sizeof (Elf_External_Verneed);
fc0e6df6
PB		 7109 everneed = (Elf_External_Verneed *) contents;
7110 iverneed = elf_tdata (abfd)->verref;
7111 for (i = 0; i < hdr->sh_info; i++, iverneed++)
7112 {
7113 Elf_External_Vernaux *evernaux;
7114 Elf_Internal_Vernaux *ivernaux;
7115 unsigned int j;
7116
7117 _bfd_elf_swap_verneed_in (abfd, everneed, iverneed);
7118
7119 iverneed->vn_bfd = abfd;
7120
7121 iverneed->vn_filename =
7122 bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
7123 iverneed->vn_file);
7124 if (iverneed->vn_filename == NULL)
d0fb9a8d 7125 goto error_return_verref;
fc0e6df6 7126
d0fb9a8d
JJ		 7127 if (iverneed->vn_cnt == 0)
7128 iverneed->vn_auxptr = NULL;
7129 else
7130 {
a50b1753
NC		 7131 iverneed->vn_auxptr = (struct elf_internal_vernaux *)
7132 bfd_alloc2 (abfd, iverneed->vn_cnt,
7133 sizeof (Elf_Internal_Vernaux));
d0fb9a8d
JJ		 7134 if (iverneed->vn_auxptr == NULL)
7135 goto error_return_verref;
7136 }
7137
7138 if (iverneed->vn_aux
7139 > (size_t) (contents_end - (bfd_byte *) everneed))
7140 goto error_return_verref;
fc0e6df6
PB		 7141
7142 evernaux = ((Elf_External_Vernaux *)
7143 ((bfd_byte *) everneed + iverneed->vn_aux));
7144 ivernaux = iverneed->vn_auxptr;
7145 for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++)
7146 {
7147 _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux);
7148
7149 ivernaux->vna_nodename =
7150 bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
7151 ivernaux->vna_name);
7152 if (ivernaux->vna_nodename == NULL)
d0fb9a8d 7153 goto error_return_verref;
fc0e6df6
PB		 7154
7155 if (j + 1 < iverneed->vn_cnt)
7156 ivernaux->vna_nextptr = ivernaux + 1;
7157 else
7158 ivernaux->vna_nextptr = NULL;
7159
d0fb9a8d
JJ		 7160 if (ivernaux->vna_next
7161 > (size_t) (contents_end - (bfd_byte *) evernaux))
7162 goto error_return_verref;
7163
fc0e6df6
PB		 7164 evernaux = ((Elf_External_Vernaux *)
7165 ((bfd_byte *) evernaux + ivernaux->vna_next));
7166
7167 if (ivernaux->vna_other > freeidx)
7168 freeidx = ivernaux->vna_other;
7169 }
7170
7171 if (i + 1 < hdr->sh_info)
7172 iverneed->vn_nextref = iverneed + 1;
7173 else
7174 iverneed->vn_nextref = NULL;
7175
d0fb9a8d
JJ		 7176 if (iverneed->vn_next
7177 > (size_t) (contents_end - (bfd_byte *) everneed))
7178 goto error_return_verref;
7179
fc0e6df6
PB		 7180 everneed = ((Elf_External_Verneed *)
7181 ((bfd_byte *) everneed + iverneed->vn_next));
7182 }
7183
7184 free (contents);
7185 contents = NULL;
7186 }
252b5132
RH		 7187
7188 if (elf_dynverdef (abfd) != 0)
7189 {
7190 Elf_Internal_Shdr *hdr;
7191 Elf_External_Verdef *everdef;
7192 Elf_Internal_Verdef *iverdef;
f631889e
UD		 7193 Elf_Internal_Verdef *iverdefarr;
7194 Elf_Internal_Verdef iverdefmem;
252b5132 7195 unsigned int i;
062e2358 7196 unsigned int maxidx;
d0fb9a8d 7197 bfd_byte *contents_end_def, *contents_end_aux;
252b5132
RH		 7198
7199 hdr = &elf_tdata (abfd)->dynverdef_hdr;
7200
a50b1753 7201 contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
252b5132
RH		 7202 if (contents == NULL)
7203 goto error_return;
7204 if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
217aa764 7205 || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size)
252b5132
RH		 7206 goto error_return;
7207
d0fb9a8d
JJ		 7208 if (hdr->sh_info && hdr->sh_size < sizeof (Elf_External_Verdef))
7209 goto error_return;
7210
7211 BFD_ASSERT (sizeof (Elf_External_Verdef)
7212 >= sizeof (Elf_External_Verdaux));
7213 contents_end_def = contents + hdr->sh_size
7214 - sizeof (Elf_External_Verdef);
7215 contents_end_aux = contents + hdr->sh_size
7216 - sizeof (Elf_External_Verdaux);
7217
f631889e
UD		 7218 /* We know the number of entries in the section but not the maximum
7219 index. Therefore we have to run through all entries and find
7220 the maximum. */
252b5132 7221 everdef = (Elf_External_Verdef *) contents;
f631889e
UD		 7222 maxidx = 0;
7223 for (i = 0; i < hdr->sh_info; ++i)
7224 {
7225 _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem);
7226
062e2358
AM		 7227 if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx)
7228 maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION);
f631889e 7229
d0fb9a8d
JJ		 7230 if (iverdefmem.vd_next
7231 > (size_t) (contents_end_def - (bfd_byte *) everdef))
7232 goto error_return;
7233
f631889e
UD		 7234 everdef = ((Elf_External_Verdef *)
7235 ((bfd_byte *) everdef + iverdefmem.vd_next));
7236 }
7237
fc0e6df6
PB		 7238 if (default_imported_symver)
7239 {
7240 if (freeidx > maxidx)
7241 maxidx = ++freeidx;
7242 else
7243 freeidx = ++maxidx;
7244 }
a50b1753
NC		 7245 elf_tdata (abfd)->verdef = (Elf_Internal_Verdef *)
7246 bfd_zalloc2 (abfd, maxidx, sizeof (Elf_Internal_Verdef));
f631889e
UD		 7247 if (elf_tdata (abfd)->verdef == NULL)
7248 goto error_return;
7249
7250 elf_tdata (abfd)->cverdefs = maxidx;
7251
7252 everdef = (Elf_External_Verdef *) contents;
7253 iverdefarr = elf_tdata (abfd)->verdef;
7254 for (i = 0; i < hdr->sh_info; i++)
252b5132
RH		 7255 {
7256 Elf_External_Verdaux *everdaux;
7257 Elf_Internal_Verdaux *iverdaux;
7258 unsigned int j;
7259
f631889e
UD		 7260 _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem);
7261
d0fb9a8d
JJ		 7262 if ((iverdefmem.vd_ndx & VERSYM_VERSION) == 0)
7263 {
7264error_return_verdef:
7265 elf_tdata (abfd)->verdef = NULL;
7266 elf_tdata (abfd)->cverdefs = 0;
7267 goto error_return;
7268 }
7269
f631889e
UD		 7270 iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1];
7271 memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef));
252b5132
RH		 7272
7273 iverdef->vd_bfd = abfd;
7274
d0fb9a8d
JJ		 7275 if (iverdef->vd_cnt == 0)
7276 iverdef->vd_auxptr = NULL;
7277 else
7278 {
a50b1753
NC		 7279 iverdef->vd_auxptr = (struct elf_internal_verdaux *)
7280 bfd_alloc2 (abfd, iverdef->vd_cnt,
7281 sizeof (Elf_Internal_Verdaux));
d0fb9a8d
JJ		 7282 if (iverdef->vd_auxptr == NULL)
7283 goto error_return_verdef;
7284 }
7285
7286 if (iverdef->vd_aux
7287 > (size_t) (contents_end_aux - (bfd_byte *) everdef))
7288 goto error_return_verdef;
252b5132
RH		 7289
7290 everdaux = ((Elf_External_Verdaux *)
7291 ((bfd_byte *) everdef + iverdef->vd_aux));
7292 iverdaux = iverdef->vd_auxptr;
7293 for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++)
7294 {
7295 _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux);
7296
7297 iverdaux->vda_nodename =
7298 bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
7299 iverdaux->vda_name);
7300 if (iverdaux->vda_nodename == NULL)
d0fb9a8d 7301 goto error_return_verdef;
252b5132
RH		 7302
7303 if (j + 1 < iverdef->vd_cnt)
7304 iverdaux->vda_nextptr = iverdaux + 1;
7305 else
7306 iverdaux->vda_nextptr = NULL;
7307
d0fb9a8d
JJ		 7308 if (iverdaux->vda_next
7309 > (size_t) (contents_end_aux - (bfd_byte *) everdaux))
7310 goto error_return_verdef;
7311
252b5132
RH		 7312 everdaux = ((Elf_External_Verdaux *)
7313 ((bfd_byte *) everdaux + iverdaux->vda_next));
7314 }
7315
d0fb9a8d
JJ		 7316 if (iverdef->vd_cnt)
7317 iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename;
252b5132 7318
d0fb9a8d 7319 if ((size_t) (iverdef - iverdefarr) + 1 < maxidx)
252b5132
RH		 7320 iverdef->vd_nextdef = iverdef + 1;
7321 else
7322 iverdef->vd_nextdef = NULL;
7323
7324 everdef = ((Elf_External_Verdef *)
7325 ((bfd_byte *) everdef + iverdef->vd_next));
7326 }
7327
7328 free (contents);
7329 contents = NULL;
7330 }
fc0e6df6 7331 else if (default_imported_symver)
252b5132 7332 {
fc0e6df6
PB		 7333 if (freeidx < 3)
7334 freeidx = 3;
7335 else
7336 freeidx++;
252b5132 7337
a50b1753
NC		 7338 elf_tdata (abfd)->verdef = (Elf_Internal_Verdef *)
7339 bfd_zalloc2 (abfd, freeidx, sizeof (Elf_Internal_Verdef));
fc0e6df6 7340 if (elf_tdata (abfd)->verdef == NULL)
252b5132
RH		 7341 goto error_return;
7342
fc0e6df6
PB		 7343 elf_tdata (abfd)->cverdefs = freeidx;
7344 }
252b5132 7345
fc0e6df6
PB		 7346 /* Create a default version based on the soname. */
7347 if (default_imported_symver)
7348 {
7349 Elf_Internal_Verdef *iverdef;
7350 Elf_Internal_Verdaux *iverdaux;
252b5132 7351
fc0e6df6 7352 iverdef = &elf_tdata (abfd)->verdef[freeidx - 1];;
252b5132 7353
fc0e6df6
PB		 7354 iverdef->vd_version = VER_DEF_CURRENT;
7355 iverdef->vd_flags = 0;
7356 iverdef->vd_ndx = freeidx;
7357 iverdef->vd_cnt = 1;
252b5132 7358
fc0e6df6 7359 iverdef->vd_bfd = abfd;
252b5132 7360
fc0e6df6
PB		 7361 iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd);
7362 if (iverdef->vd_nodename == NULL)
d0fb9a8d 7363 goto error_return_verdef;
fc0e6df6 7364 iverdef->vd_nextdef = NULL;
a50b1753
NC		 7365 iverdef->vd_auxptr = (struct elf_internal_verdaux *)
7366 bfd_alloc (abfd, sizeof (Elf_Internal_Verdaux));
d0fb9a8d
JJ		 7367 if (iverdef->vd_auxptr == NULL)
7368 goto error_return_verdef;
252b5132 7369
fc0e6df6
PB		 7370 iverdaux = iverdef->vd_auxptr;
7371 iverdaux->vda_nodename = iverdef->vd_nodename;
7372 iverdaux->vda_nextptr = NULL;
252b5132
RH		 7373 }
7374
b34976b6 7375 return TRUE;
252b5132
RH		 7376
7377 error_return:
5ed6aba4 7378 if (contents != NULL)
252b5132 7379 free (contents);
b34976b6 7380 return FALSE;
252b5132
RH		 7381}
7382\f
7383asymbol *
217aa764 7384_bfd_elf_make_empty_symbol (bfd *abfd)
252b5132
RH		 7385{
7386 elf_symbol_type *newsym;
dc810e39 7387 bfd_size_type amt = sizeof (elf_symbol_type);
252b5132 7388
a50b1753 7389 newsym = (elf_symbol_type *) bfd_zalloc (abfd, amt);
252b5132
RH		 7390 if (!newsym)
7391 return NULL;
7392 else
7393 {
7394 newsym->symbol.the_bfd = abfd;
7395 return &newsym->symbol;
7396 }
7397}
7398
7399void
217aa764
AM		 7400_bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
7401 asymbol *symbol,
7402 symbol_info *ret)
252b5132
RH		 7403{
7404 bfd_symbol_info (symbol, ret);
7405}
7406
7407/* Return whether a symbol name implies a local symbol. Most targets
7408 use this function for the is_local_label_name entry point, but some
7409 override it. */
7410
b34976b6 7411bfd_boolean
217aa764
AM		 7412_bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED,
7413 const char *name)
252b5132
RH		 7414{
7415 /* Normal local symbols start with ``.L''. */
7416 if (name[0] == '.' && name[1] == 'L')
b34976b6 7417 return TRUE;
252b5132
RH		 7418
7419 /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate
7420 DWARF debugging symbols starting with ``..''. */
7421 if (name[0] == '.' && name[1] == '.')
b34976b6 7422 return TRUE;
252b5132
RH		 7423
7424 /* gcc will sometimes generate symbols beginning with ``_.L_'' when
7425 emitting DWARF debugging output. I suspect this is actually a
7426 small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call
7427 ASM_GENERATE_INTERNAL_LABEL, and this causes the leading
7428 underscore to be emitted on some ELF targets). For ease of use,
7429 we treat such symbols as local. */
7430 if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_')
b34976b6 7431 return TRUE;
252b5132 7432
b34976b6 7433 return FALSE;
252b5132
RH		 7434}
7435
7436alent *
217aa764
AM		 7437_bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED,
7438 asymbol *symbol ATTRIBUTE_UNUSED)
252b5132
RH		 7439{
7440 abort ();
7441 return NULL;
7442}
7443
b34976b6 7444bfd_boolean
217aa764
AM		 7445_bfd_elf_set_arch_mach (bfd *abfd,
7446 enum bfd_architecture arch,
7447 unsigned long machine)
252b5132
RH		 7448{
7449 /* If this isn't the right architecture for this backend, and this
7450 isn't the generic backend, fail. */
7451 if (arch != get_elf_backend_data (abfd)->arch
7452 && arch != bfd_arch_unknown
7453 && get_elf_backend_data (abfd)->arch != bfd_arch_unknown)
b34976b6 7454 return FALSE;
252b5132
RH		 7455
7456 return bfd_default_set_arch_mach (abfd, arch, machine);
7457}
7458
d1fad7c6
NC		 7459/* Find the function to a particular section and offset,
7460 for error reporting. */
252b5132 7461
b34976b6 7462static bfd_boolean
b9d678e0 7463elf_find_function (bfd *abfd,
217aa764
AM		 7464 asection *section,
7465 asymbol **symbols,
7466 bfd_vma offset,
7467 const char **filename_ptr,
7468 const char **functionname_ptr)
252b5132 7469{
aef36ac1
AM		 7470 static asection *last_section;
7471 static asymbol *func;
7472 static const char *filename;
7473 static bfd_size_type func_size;
252b5132 7474
a06c7d5a
NC		 7475 if (symbols == NULL)
7476 return FALSE;
7477
aef36ac1
AM		 7478 if (last_section != section
7479 || func == NULL
7480 || offset < func->value
7481 || offset >= func->value + func_size)
7482 {
7483 asymbol *file;
7484 bfd_vma low_func;
7485 asymbol **p;
7486 /* ??? Given multiple file symbols, it is impossible to reliably
7487 choose the right file name for global symbols. File symbols are
7488 local symbols, and thus all file symbols must sort before any
7489 global symbols. The ELF spec may be interpreted to say that a
7490 file symbol must sort before other local symbols, but currently
7491 ld -r doesn't do this. So, for ld -r output, it is possible to
7492 make a better choice of file name for local symbols by ignoring
7493 file symbols appearing after a given local symbol. */
7494 enum { nothing_seen, symbol_seen, file_after_symbol_seen } state;
7495 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
7496
7497 filename = NULL;
7498 func = NULL;
7499 file = NULL;
7500 low_func = 0;
7501 state = nothing_seen;
7502 func_size = 0;
7503 last_section = section;
7504
7505 for (p = symbols; *p != NULL; p++)
7506 {
7507 asymbol *sym = *p;
7508 bfd_vma code_off;
7509 bfd_size_type size;
7510
7511 if ((sym->flags & BSF_FILE) != 0)
7512 {
7513 file = sym;
7514 if (state == symbol_seen)
7515 state = file_after_symbol_seen;
7516 continue;
7517 }
ff9e0f5b 7518
aef36ac1
AM		 7519 size = bed->maybe_function_sym (sym, section, &code_off);
7520 if (size != 0
7521 && code_off <= offset
7522 && (code_off > low_func
7523 || (code_off == low_func
7524 && size > func_size)))
7525 {
7526 func = sym;
7527 func_size = size;
7528 low_func = code_off;
7529 filename = NULL;
7530 if (file != NULL
7531 && ((sym->flags & BSF_LOCAL) != 0
7532 || state != file_after_symbol_seen))
7533 filename = bfd_asymbol_name (file);
7534 }
7535 if (state == nothing_seen)
7536 state = symbol_seen;
252b5132
RH		 7537 }
7538 }
7539
7540 if (func == NULL)
b34976b6 7541 return FALSE;
252b5132 7542
d1fad7c6
NC		 7543 if (filename_ptr)
7544 *filename_ptr = filename;
7545 if (functionname_ptr)
7546 *functionname_ptr = bfd_asymbol_name (func);
7547
b34976b6 7548 return TRUE;
d1fad7c6
NC		 7549}
7550
7551/* Find the nearest line to a particular section and offset,
7552 for error reporting. */
7553
b34976b6 7554bfd_boolean
217aa764
AM		 7555_bfd_elf_find_nearest_line (bfd *abfd,
7556 asection *section,
7557 asymbol **symbols,
7558 bfd_vma offset,
7559 const char **filename_ptr,
7560 const char **functionname_ptr,
7561 unsigned int *line_ptr)
d1fad7c6 7562{
b34976b6 7563 bfd_boolean found;
d1fad7c6
NC		 7564
7565 if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset,
4e8a9624
AM		 7566 filename_ptr, functionname_ptr,
7567 line_ptr))
d1fad7c6
NC		 7568 {
7569 if (!*functionname_ptr)
4e8a9624
AM		 7570 elf_find_function (abfd, section, symbols, offset,
7571 *filename_ptr ? NULL : filename_ptr,
7572 functionname_ptr);
7573
b34976b6 7574 return TRUE;
d1fad7c6
NC		 7575 }
7576
fc28f9aa
TG		 7577 if (_bfd_dwarf2_find_nearest_line (abfd, dwarf_debug_sections,
7578 section, symbols, offset,
4e8a9624
AM		 7579 filename_ptr, functionname_ptr,
7580 line_ptr, 0,
7581 &elf_tdata (abfd)->dwarf2_find_line_info))
d1fad7c6
NC		 7582 {
7583 if (!*functionname_ptr)
4e8a9624
AM		 7584 elf_find_function (abfd, section, symbols, offset,
7585 *filename_ptr ? NULL : filename_ptr,
7586 functionname_ptr);
7587
b34976b6 7588 return TRUE;
d1fad7c6
NC		 7589 }
7590
7591 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
4e8a9624
AM		 7592 &found, filename_ptr,
7593 functionname_ptr, line_ptr,
7594 &elf_tdata (abfd)->line_info))
b34976b6 7595 return FALSE;
dc43ada5 7596 if (found && (*functionname_ptr || *line_ptr))
b34976b6 7597 return TRUE;
d1fad7c6
NC		 7598
7599 if (symbols == NULL)
b34976b6 7600 return FALSE;
d1fad7c6
NC		 7601
7602 if (! elf_find_function (abfd, section, symbols, offset,
4e8a9624 7603 filename_ptr, functionname_ptr))
b34976b6 7604 return FALSE;
d1fad7c6 7605
252b5132 7606 *line_ptr = 0;
b34976b6 7607 return TRUE;
252b5132
RH		 7608}
7609
5420f73d
L		 7610/* Find the line for a symbol. */
7611
7612bfd_boolean
7613_bfd_elf_find_line (bfd *abfd, asymbol **symbols, asymbol *symbol,
7614 const char **filename_ptr, unsigned int *line_ptr)
7615{
7616 return _bfd_dwarf2_find_line (abfd, symbols, symbol,
7617 filename_ptr, line_ptr, 0,
7618 &elf_tdata (abfd)->dwarf2_find_line_info);
7619}
7620
4ab527b0
FF		 7621/* After a call to bfd_find_nearest_line, successive calls to
7622 bfd_find_inliner_info can be used to get source information about
7623 each level of function inlining that terminated at the address
7624 passed to bfd_find_nearest_line. Currently this is only supported
7625 for DWARF2 with appropriate DWARF3 extensions. */
7626
7627bfd_boolean
7628_bfd_elf_find_inliner_info (bfd *abfd,
7629 const char **filename_ptr,
7630 const char **functionname_ptr,
7631 unsigned int *line_ptr)
7632{
7633 bfd_boolean found;
7634 found = _bfd_dwarf2_find_inliner_info (abfd, filename_ptr,
7635 functionname_ptr, line_ptr,
7636 & elf_tdata (abfd)->dwarf2_find_line_info);
7637 return found;
7638}
7639
252b5132 7640int
a6b96beb 7641_bfd_elf_sizeof_headers (bfd *abfd, struct bfd_link_info *info)
252b5132 7642{
8ded5a0f
AM		 7643 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
7644 int ret = bed->s->sizeof_ehdr;
252b5132 7645
a6b96beb 7646 if (!info->relocatable)
8ded5a0f 7647 {
62d7a5f6 7648 bfd_size_type phdr_size = elf_tdata (abfd)->program_header_size;
8ded5a0f 7649
62d7a5f6
AM		 7650 if (phdr_size == (bfd_size_type) -1)
7651 {
7652 struct elf_segment_map *m;
7653
7654 phdr_size = 0;
7655 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
7656 phdr_size += bed->s->sizeof_phdr;
8ded5a0f 7657
62d7a5f6
AM		 7658 if (phdr_size == 0)
7659 phdr_size = get_program_header_size (abfd, info);
7660 }
8ded5a0f
AM		 7661
7662 elf_tdata (abfd)->program_header_size = phdr_size;
7663 ret += phdr_size;
7664 }
7665
252b5132
RH		 7666 return ret;
7667}
7668
b34976b6 7669bfd_boolean
217aa764
AM		 7670_bfd_elf_set_section_contents (bfd *abfd,
7671 sec_ptr section,
0f867abe 7672 const void *location,
217aa764
AM		 7673 file_ptr offset,
7674 bfd_size_type count)
252b5132
RH		 7675{
7676 Elf_Internal_Shdr *hdr;
dc810e39 7677 bfd_signed_vma pos;
252b5132
RH		 7678
7679 if (! abfd->output_has_begun
217aa764 7680 && ! _bfd_elf_compute_section_file_positions (abfd, NULL))
b34976b6 7681 return FALSE;
252b5132
RH		 7682
7683 hdr = &elf_section_data (section)->this_hdr;
dc810e39
AM		 7684 pos = hdr->sh_offset + offset;
7685 if (bfd_seek (abfd, pos, SEEK_SET) != 0
7686 || bfd_bwrite (location, count, abfd) != count)
b34976b6 7687 return FALSE;
252b5132 7688
b34976b6 7689 return TRUE;
252b5132
RH		 7690}
7691
7692void
217aa764
AM		 7693_bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
7694 arelent *cache_ptr ATTRIBUTE_UNUSED,
7695 Elf_Internal_Rela *dst ATTRIBUTE_UNUSED)
252b5132
RH		 7696{
7697 abort ();
7698}
7699
252b5132
RH		 7700/* Try to convert a non-ELF reloc into an ELF one. */
7701
b34976b6 7702bfd_boolean
217aa764 7703_bfd_elf_validate_reloc (bfd *abfd, arelent *areloc)
252b5132 7704{
c044fabd 7705 /* Check whether we really have an ELF howto. */
252b5132
RH		 7706
7707 if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec)
7708 {
7709 bfd_reloc_code_real_type code;
7710 reloc_howto_type *howto;
7711
7712 /* Alien reloc: Try to determine its type to replace it with an
c044fabd 7713 equivalent ELF reloc. */
252b5132
RH		 7714
7715 if (areloc->howto->pc_relative)
7716 {
7717 switch (areloc->howto->bitsize)
7718 {
7719 case 8:
7720 code = BFD_RELOC_8_PCREL;
7721 break;
7722 case 12:
7723 code = BFD_RELOC_12_PCREL;
7724 break;
7725 case 16:
7726 code = BFD_RELOC_16_PCREL;
7727 break;
7728 case 24:
7729 code = BFD_RELOC_24_PCREL;
7730 break;
7731 case 32:
7732 code = BFD_RELOC_32_PCREL;
7733 break;
7734 case 64:
7735 code = BFD_RELOC_64_PCREL;
7736 break;
7737 default:
7738 goto fail;
7739 }
7740
7741 howto = bfd_reloc_type_lookup (abfd, code);
7742
7743 if (areloc->howto->pcrel_offset != howto->pcrel_offset)
7744 {
7745 if (howto->pcrel_offset)
7746 areloc->addend += areloc->address;
7747 else
7748 areloc->addend -= areloc->address; /* addend is unsigned!! */
7749 }
7750 }
7751 else
7752 {
7753 switch (areloc->howto->bitsize)
7754 {
7755 case 8:
7756 code = BFD_RELOC_8;
7757 break;
7758 case 14:
7759 code = BFD_RELOC_14;
7760 break;
7761 case 16:
7762 code = BFD_RELOC_16;
7763 break;
7764 case 26:
7765 code = BFD_RELOC_26;
7766 break;
7767 case 32:
7768 code = BFD_RELOC_32;
7769 break;
7770 case 64:
7771 code = BFD_RELOC_64;
7772 break;
7773 default:
7774 goto fail;
7775 }
7776
7777 howto = bfd_reloc_type_lookup (abfd, code);
7778 }
7779
7780 if (howto)
7781 areloc->howto = howto;
7782 else
7783 goto fail;
7784 }
7785
b34976b6 7786 return TRUE;
252b5132
RH		 7787
7788 fail:
7789 (*_bfd_error_handler)
d003868e
AM		 7790 (_("%B: unsupported relocation type %s"),
7791 abfd, areloc->howto->name);
252b5132 7792 bfd_set_error (bfd_error_bad_value);
b34976b6 7793 return FALSE;
252b5132
RH		 7794}
7795
b34976b6 7796bfd_boolean
217aa764 7797_bfd_elf_close_and_cleanup (bfd *abfd)
252b5132 7798{
d9071b0c
TG		 7799 struct elf_obj_tdata *tdata = elf_tdata (abfd);
7800 if (bfd_get_format (abfd) == bfd_object && tdata != NULL)
252b5132 7801 {
d9071b0c 7802 if (elf_shstrtab (abfd) != NULL)
2b0f7ef9 7803 _bfd_elf_strtab_free (elf_shstrtab (abfd));
d9071b0c 7804 _bfd_dwarf2_cleanup_debug_info (abfd, &tdata->dwarf2_find_line_info);
252b5132
RH		 7805 }
7806
7807 return _bfd_generic_close_and_cleanup (abfd);
7808}
7809
7810/* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY
7811 in the relocation's offset. Thus we cannot allow any sort of sanity
7812 range-checking to interfere. There is nothing else to do in processing
7813 this reloc. */
7814
7815bfd_reloc_status_type
217aa764
AM		 7816_bfd_elf_rel_vtable_reloc_fn
7817 (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED,
fc0a2244 7818 struct bfd_symbol *symbol ATTRIBUTE_UNUSED,
217aa764
AM		 7819 void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED,
7820 bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED)
252b5132
RH		 7821{
7822 return bfd_reloc_ok;
7823}
252b5132
RH		 7824\f
7825/* Elf core file support. Much of this only works on native
7826 toolchains, since we rely on knowing the
7827 machine-dependent procfs structure in order to pick
c044fabd 7828 out details about the corefile. */
252b5132
RH		 7829
7830#ifdef HAVE_SYS_PROCFS_H
16231b7b
DG		 7831/* Needed for new procfs interface on sparc-solaris. */
7832# define _STRUCTURED_PROC 1
252b5132
RH		 7833# include <sys/procfs.h>
7834#endif
7835
261b8d08
PA		 7836/* Return a PID that identifies a "thread" for threaded cores, or the
7837 PID of the main process for non-threaded cores. */
252b5132
RH		 7838
7839static int
217aa764 7840elfcore_make_pid (bfd *abfd)
252b5132 7841{
261b8d08
PA		 7842 int pid;
7843
7844 pid = elf_tdata (abfd)->core_lwpid;
7845 if (pid == 0)
7846 pid = elf_tdata (abfd)->core_pid;
7847
7848 return pid;
252b5132
RH		 7849}
7850
252b5132
RH		 7851/* If there isn't a section called NAME, make one, using
7852 data from SECT. Note, this function will generate a
7853 reference to NAME, so you shouldn't deallocate or
c044fabd 7854 overwrite it. */
252b5132 7855
b34976b6 7856static bfd_boolean
217aa764 7857elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect)
252b5132 7858{
c044fabd 7859 asection *sect2;
252b5132
RH		 7860
7861 if (bfd_get_section_by_name (abfd, name) != NULL)
b34976b6 7862 return TRUE;
252b5132 7863
117ed4f8 7864 sect2 = bfd_make_section_with_flags (abfd, name, sect->flags);
252b5132 7865 if (sect2 == NULL)
b34976b6 7866 return FALSE;
252b5132 7867
eea6121a 7868 sect2->size = sect->size;
252b5132 7869 sect2->filepos = sect->filepos;
252b5132 7870 sect2->alignment_power = sect->alignment_power;
b34976b6 7871 return TRUE;
252b5132
RH		 7872}
7873
bb0082d6
AM		 7874/* Create a pseudosection containing SIZE bytes at FILEPOS. This
7875 actually creates up to two pseudosections:
7876 - For the single-threaded case, a section named NAME, unless
7877 such a section already exists.
7878 - For the multi-threaded case, a section named "NAME/PID", where
7879 PID is elfcore_make_pid (abfd).
7880 Both pseudosections have identical contents. */
b34976b6 7881bfd_boolean
217aa764
AM		 7882_bfd_elfcore_make_pseudosection (bfd *abfd,
7883 char *name,
7884 size_t size,
7885 ufile_ptr filepos)
bb0082d6
AM		 7886{
7887 char buf[100];
7888 char *threaded_name;
d4c88bbb 7889 size_t len;
bb0082d6
AM		 7890 asection *sect;
7891
7892 /* Build the section name. */
7893
7894 sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd));
d4c88bbb 7895 len = strlen (buf) + 1;
a50b1753 7896 threaded_name = (char *) bfd_alloc (abfd, len);
bb0082d6 7897 if (threaded_name == NULL)
b34976b6 7898 return FALSE;
d4c88bbb 7899 memcpy (threaded_name, buf, len);
bb0082d6 7900
117ed4f8
AM		 7901 sect = bfd_make_section_anyway_with_flags (abfd, threaded_name,
7902 SEC_HAS_CONTENTS);
bb0082d6 7903 if (sect == NULL)
b34976b6 7904 return FALSE;
eea6121a 7905 sect->size = size;
bb0082d6 7906 sect->filepos = filepos;
bb0082d6
AM		 7907 sect->alignment_power = 2;
7908
936e320b 7909 return elfcore_maybe_make_sect (abfd, name, sect);
bb0082d6
AM		 7910}
7911
252b5132 7912/* prstatus_t exists on:
4a938328 7913 solaris 2.5+
252b5132
RH		 7914 linux 2.[01] + glibc
7915 unixware 4.2
7916*/
7917
7918#if defined (HAVE_PRSTATUS_T)
a7b97311 7919
b34976b6 7920static bfd_boolean
217aa764 7921elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
252b5132 7922{
eea6121a 7923 size_t size;
7ee38065 7924 int offset;
252b5132 7925
4a938328
MS		 7926 if (note->descsz == sizeof (prstatus_t))
7927 {
7928 prstatus_t prstat;
252b5132 7929
eea6121a 7930 size = sizeof (prstat.pr_reg);
7ee38065 7931 offset = offsetof (prstatus_t, pr_reg);
4a938328 7932 memcpy (&prstat, note->descdata, sizeof (prstat));
252b5132 7933
fa49d224
NC		 7934 /* Do not overwrite the core signal if it
7935 has already been set by another thread. */
7936 if (elf_tdata (abfd)->core_signal == 0)
7937 elf_tdata (abfd)->core_signal = prstat.pr_cursig;
261b8d08
PA		 7938 if (elf_tdata (abfd)->core_pid == 0)
7939 elf_tdata (abfd)->core_pid = prstat.pr_pid;
252b5132 7940
4a938328
MS		 7941 /* pr_who exists on:
7942 solaris 2.5+
7943 unixware 4.2
7944 pr_who doesn't exist on:
7945 linux 2.[01]
7946 */
252b5132 7947#if defined (HAVE_PRSTATUS_T_PR_WHO)
4a938328 7948 elf_tdata (abfd)->core_lwpid = prstat.pr_who;
261b8d08
PA		 7949#else
7950 elf_tdata (abfd)->core_lwpid = prstat.pr_pid;
252b5132 7951#endif
4a938328 7952 }
7ee38065 7953#if defined (HAVE_PRSTATUS32_T)
4a938328
MS		 7954 else if (note->descsz == sizeof (prstatus32_t))
7955 {
7956 /* 64-bit host, 32-bit corefile */
7957 prstatus32_t prstat;
7958
eea6121a 7959 size = sizeof (prstat.pr_reg);
7ee38065 7960 offset = offsetof (prstatus32_t, pr_reg);
4a938328
MS		 7961 memcpy (&prstat, note->descdata, sizeof (prstat));
7962
fa49d224
NC		 7963 /* Do not overwrite the core signal if it
7964 has already been set by another thread. */
7965 if (elf_tdata (abfd)->core_signal == 0)
7966 elf_tdata (abfd)->core_signal = prstat.pr_cursig;
261b8d08
PA		 7967 if (elf_tdata (abfd)->core_pid == 0)
7968 elf_tdata (abfd)->core_pid = prstat.pr_pid;
4a938328
MS		 7969
7970 /* pr_who exists on:
7971 solaris 2.5+
7972 unixware 4.2
7973 pr_who doesn't exist on:
7974 linux 2.[01]
7975 */
7ee38065 7976#if defined (HAVE_PRSTATUS32_T_PR_WHO)
4a938328 7977 elf_tdata (abfd)->core_lwpid = prstat.pr_who;
261b8d08
PA		 7978#else
7979 elf_tdata (abfd)->core_lwpid = prstat.pr_pid;
4a938328
MS		 7980#endif
7981 }
7ee38065 7982#endif /* HAVE_PRSTATUS32_T */
4a938328
MS		 7983 else
7984 {
7985 /* Fail - we don't know how to handle any other
7986 note size (ie. data object type). */
b34976b6 7987 return TRUE;
4a938328 7988 }
252b5132 7989
bb0082d6 7990 /* Make a ".reg/999" section and a ".reg" section. */
936e320b 7991 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 7992 size, note->descpos + offset);
252b5132
RH		 7993}
7994#endif /* defined (HAVE_PRSTATUS_T) */
7995
bb0082d6 7996/* Create a pseudosection containing the exact contents of NOTE. */
b34976b6 7997static bfd_boolean
217aa764
AM		 7998elfcore_make_note_pseudosection (bfd *abfd,
7999 char *name,
8000 Elf_Internal_Note *note)
252b5132 8001{
936e320b
AM		 8002 return _bfd_elfcore_make_pseudosection (abfd, name,
8003 note->descsz, note->descpos);
252b5132
RH		 8004}
8005
ff08c6bb
JB		 8006/* There isn't a consistent prfpregset_t across platforms,
8007 but it doesn't matter, because we don't have to pick this
c044fabd
KH		 8008 data structure apart. */
8009
b34976b6 8010static bfd_boolean
217aa764 8011elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note)
ff08c6bb
JB		 8012{
8013 return elfcore_make_note_pseudosection (abfd, ".reg2", note);
8014}
8015
ff08c6bb 8016/* Linux dumps the Intel SSE regs in a note named "LINUX" with a note
971d4640 8017 type of NT_PRXFPREG. Just include the whole note's contents
ff08c6bb 8018 literally. */
c044fabd 8019
b34976b6 8020static bfd_boolean
217aa764 8021elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note)
ff08c6bb
JB		 8022{
8023 return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note);
8024}
8025
4339cae0
L		 8026/* Linux dumps the Intel XSAVE extended state in a note named "LINUX"
8027 with a note type of NT_X86_XSTATE. Just include the whole note's
8028 contents literally. */
8029
8030static bfd_boolean
8031elfcore_grok_xstatereg (bfd *abfd, Elf_Internal_Note *note)
8032{
8033 return elfcore_make_note_pseudosection (abfd, ".reg-xstate", note);
8034}
8035
97753bd5
AM		 8036static bfd_boolean
8037elfcore_grok_ppc_vmx (bfd *abfd, Elf_Internal_Note *note)
8038{
8039 return elfcore_make_note_pseudosection (abfd, ".reg-ppc-vmx", note);
8040}
8041
89eeb0bc
LM		 8042static bfd_boolean
8043elfcore_grok_ppc_vsx (bfd *abfd, Elf_Internal_Note *note)
8044{
8045 return elfcore_make_note_pseudosection (abfd, ".reg-ppc-vsx", note);
8046}
97753bd5 8047
0675e188
UW		 8048static bfd_boolean
8049elfcore_grok_s390_high_gprs (bfd *abfd, Elf_Internal_Note *note)
8050{
8051 return elfcore_make_note_pseudosection (abfd, ".reg-s390-high-gprs", note);
8052}
8053
d7eeb400
MS		 8054static bfd_boolean
8055elfcore_grok_s390_timer (bfd *abfd, Elf_Internal_Note *note)
8056{
8057 return elfcore_make_note_pseudosection (abfd, ".reg-s390-timer", note);
8058}
8059
8060static bfd_boolean
8061elfcore_grok_s390_todcmp (bfd *abfd, Elf_Internal_Note *note)
8062{
8063 return elfcore_make_note_pseudosection (abfd, ".reg-s390-todcmp", note);
8064}
8065
8066static bfd_boolean
8067elfcore_grok_s390_todpreg (bfd *abfd, Elf_Internal_Note *note)
8068{
8069 return elfcore_make_note_pseudosection (abfd, ".reg-s390-todpreg", note);
8070}
8071
8072static bfd_boolean
8073elfcore_grok_s390_ctrs (bfd *abfd, Elf_Internal_Note *note)
8074{
8075 return elfcore_make_note_pseudosection (abfd, ".reg-s390-ctrs", note);
8076}
8077
8078static bfd_boolean
8079elfcore_grok_s390_prefix (bfd *abfd, Elf_Internal_Note *note)
8080{
8081 return elfcore_make_note_pseudosection (abfd, ".reg-s390-prefix", note);
8082}
8083
355b81d9
UW		 8084static bfd_boolean
8085elfcore_grok_s390_last_break (bfd *abfd, Elf_Internal_Note *note)
8086{
8087 return elfcore_make_note_pseudosection (abfd, ".reg-s390-last-break", note);
8088}
8089
8090static bfd_boolean
8091elfcore_grok_s390_system_call (bfd *abfd, Elf_Internal_Note *note)
8092{
8093 return elfcore_make_note_pseudosection (abfd, ".reg-s390-system-call", note);
8094}
8095
faa9a424
UW		 8096static bfd_boolean
8097elfcore_grok_arm_vfp (bfd *abfd, Elf_Internal_Note *note)
8098{
8099 return elfcore_make_note_pseudosection (abfd, ".reg-arm-vfp", note);
8100}
8101
252b5132 8102#if defined (HAVE_PRPSINFO_T)
4a938328 8103typedef prpsinfo_t elfcore_psinfo_t;
7ee38065 8104#if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */
4a938328
MS		 8105typedef prpsinfo32_t elfcore_psinfo32_t;
8106#endif
252b5132
RH		 8107#endif
8108
8109#if defined (HAVE_PSINFO_T)
4a938328 8110typedef psinfo_t elfcore_psinfo_t;
7ee38065 8111#if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */
4a938328
MS		 8112typedef psinfo32_t elfcore_psinfo32_t;
8113#endif
252b5132
RH		 8114#endif
8115
252b5132
RH		 8116/* return a malloc'ed copy of a string at START which is at
8117 most MAX bytes long, possibly without a terminating '\0'.
c044fabd 8118 the copy will always have a terminating '\0'. */
252b5132 8119
936e320b 8120char *
217aa764 8121_bfd_elfcore_strndup (bfd *abfd, char *start, size_t max)
252b5132 8122{
dc810e39 8123 char *dups;
a50b1753 8124 char *end = (char *) memchr (start, '\0', max);
dc810e39 8125 size_t len;
252b5132
RH		 8126
8127 if (end == NULL)
8128 len = max;
8129 else
8130 len = end - start;
8131
a50b1753 8132 dups = (char *) bfd_alloc (abfd, len + 1);
dc810e39 8133 if (dups == NULL)
252b5132
RH		 8134 return NULL;
8135
dc810e39
AM		 8136 memcpy (dups, start, len);
8137 dups[len] = '\0';
252b5132 8138
dc810e39 8139 return dups;
252b5132
RH		 8140}
8141
bb0082d6 8142#if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
b34976b6 8143static bfd_boolean
217aa764 8144elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
252b5132 8145{
4a938328
MS		 8146 if (note->descsz == sizeof (elfcore_psinfo_t))
8147 {
8148 elfcore_psinfo_t psinfo;
252b5132 8149
7ee38065 8150 memcpy (&psinfo, note->descdata, sizeof (psinfo));
252b5132 8151
335e41d4 8152#if defined (HAVE_PSINFO_T_PR_PID) || defined (HAVE_PRPSINFO_T_PR_PID)
bc989cdc 8153 elf_tdata (abfd)->core_pid = psinfo.pr_pid;
335e41d4 8154#endif
4a938328 8155 elf_tdata (abfd)->core_program
936e320b
AM		 8156 = _bfd_elfcore_strndup (abfd, psinfo.pr_fname,
8157 sizeof (psinfo.pr_fname));
252b5132 8158
4a938328 8159 elf_tdata (abfd)->core_command
936e320b
AM		 8160 = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs,
8161 sizeof (psinfo.pr_psargs));
4a938328 8162 }
7ee38065 8163#if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T)
4a938328
MS		 8164 else if (note->descsz == sizeof (elfcore_psinfo32_t))
8165 {
8166 /* 64-bit host, 32-bit corefile */
8167 elfcore_psinfo32_t psinfo;
8168
7ee38065 8169 memcpy (&psinfo, note->descdata, sizeof (psinfo));
252b5132 8170
335e41d4 8171#if defined (HAVE_PSINFO32_T_PR_PID) || defined (HAVE_PRPSINFO32_T_PR_PID)
bc989cdc 8172 elf_tdata (abfd)->core_pid = psinfo.pr_pid;
335e41d4 8173#endif
4a938328 8174 elf_tdata (abfd)->core_program
936e320b
AM		 8175 = _bfd_elfcore_strndup (abfd, psinfo.pr_fname,
8176 sizeof (psinfo.pr_fname));
4a938328
MS		 8177
8178 elf_tdata (abfd)->core_command
936e320b
AM		 8179 = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs,
8180 sizeof (psinfo.pr_psargs));
4a938328
MS		 8181 }
8182#endif
8183
8184 else
8185 {
8186 /* Fail - we don't know how to handle any other
8187 note size (ie. data object type). */
b34976b6 8188 return TRUE;
4a938328 8189 }
252b5132
RH		 8190
8191 /* Note that for some reason, a spurious space is tacked
8192 onto the end of the args in some (at least one anyway)
c044fabd 8193 implementations, so strip it off if it exists. */
252b5132
RH		 8194
8195 {
c044fabd 8196 char *command = elf_tdata (abfd)->core_command;
252b5132
RH		 8197 int n = strlen (command);
8198
8199 if (0 < n && command[n - 1] == ' ')
8200 command[n - 1] = '\0';
8201 }
8202
b34976b6 8203 return TRUE;
252b5132
RH		 8204}
8205#endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */
8206
252b5132 8207#if defined (HAVE_PSTATUS_T)
b34976b6 8208static bfd_boolean
217aa764 8209elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note)
252b5132 8210{
f572a39d
AM		 8211 if (note->descsz == sizeof (pstatus_t)
8212#if defined (HAVE_PXSTATUS_T)
8213 || note->descsz == sizeof (pxstatus_t)
8214#endif
8215 )
4a938328
MS		 8216 {
8217 pstatus_t pstat;
252b5132 8218
4a938328 8219 memcpy (&pstat, note->descdata, sizeof (pstat));
252b5132 8220
4a938328
MS		 8221 elf_tdata (abfd)->core_pid = pstat.pr_pid;
8222 }
7ee38065 8223#if defined (HAVE_PSTATUS32_T)
4a938328
MS		 8224 else if (note->descsz == sizeof (pstatus32_t))
8225 {
8226 /* 64-bit host, 32-bit corefile */
8227 pstatus32_t pstat;
252b5132 8228
4a938328 8229 memcpy (&pstat, note->descdata, sizeof (pstat));
252b5132 8230
4a938328
MS		 8231 elf_tdata (abfd)->core_pid = pstat.pr_pid;
8232 }
8233#endif
252b5132
RH		 8234 /* Could grab some more details from the "representative"
8235 lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an
c044fabd 8236 NT_LWPSTATUS note, presumably. */
252b5132 8237
b34976b6 8238 return TRUE;
252b5132
RH		 8239}
8240#endif /* defined (HAVE_PSTATUS_T) */
8241
252b5132 8242#if defined (HAVE_LWPSTATUS_T)
b34976b6 8243static bfd_boolean
217aa764 8244elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note)
252b5132
RH		 8245{
8246 lwpstatus_t lwpstat;
8247 char buf[100];
c044fabd 8248 char *name;
d4c88bbb 8249 size_t len;
c044fabd 8250 asection *sect;
252b5132 8251
f572a39d
AM		 8252 if (note->descsz != sizeof (lwpstat)
8253#if defined (HAVE_LWPXSTATUS_T)
8254 && note->descsz != sizeof (lwpxstatus_t)
8255#endif
8256 )
b34976b6 8257 return TRUE;
252b5132
RH		 8258
8259 memcpy (&lwpstat, note->descdata, sizeof (lwpstat));
8260
8261 elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid;
a1504221
JB		 8262 /* Do not overwrite the core signal if it has already been set by
8263 another thread. */
8264 if (elf_tdata (abfd)->core_signal == 0)
8265 elf_tdata (abfd)->core_signal = lwpstat.pr_cursig;
252b5132 8266
c044fabd 8267 /* Make a ".reg/999" section. */
252b5132
RH		 8268
8269 sprintf (buf, ".reg/%d", elfcore_make_pid (abfd));
d4c88bbb 8270 len = strlen (buf) + 1;
217aa764 8271 name = bfd_alloc (abfd, len);
252b5132 8272 if (name == NULL)
b34976b6 8273 return FALSE;
d4c88bbb 8274 memcpy (name, buf, len);
252b5132 8275
117ed4f8 8276 sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS);
252b5132 8277 if (sect == NULL)
b34976b6 8278 return FALSE;
252b5132
RH		 8279
8280#if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
eea6121a 8281 sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs);
252b5132
RH		 8282 sect->filepos = note->descpos
8283 + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs);
8284#endif
8285
8286#if defined (HAVE_LWPSTATUS_T_PR_REG)
eea6121a 8287 sect->size = sizeof (lwpstat.pr_reg);
252b5132
RH		 8288 sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg);
8289#endif
8290
252b5132
RH		 8291 sect->alignment_power = 2;
8292
8293 if (!elfcore_maybe_make_sect (abfd, ".reg", sect))
b34976b6 8294 return FALSE;
252b5132
RH		 8295
8296 /* Make a ".reg2/999" section */
8297
8298 sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd));
d4c88bbb 8299 len = strlen (buf) + 1;
217aa764 8300 name = bfd_alloc (abfd, len);
252b5132 8301 if (name == NULL)
b34976b6 8302 return FALSE;
d4c88bbb 8303 memcpy (name, buf, len);
252b5132 8304
117ed4f8 8305 sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS);
252b5132 8306 if (sect == NULL)
b34976b6 8307 return FALSE;
252b5132
RH		 8308
8309#if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
eea6121a 8310 sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs);
252b5132
RH		 8311 sect->filepos = note->descpos
8312 + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs);
8313#endif
8314
8315#if defined (HAVE_LWPSTATUS_T_PR_FPREG)
eea6121a 8316 sect->size = sizeof (lwpstat.pr_fpreg);
252b5132
RH		 8317 sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg);
8318#endif
8319
252b5132
RH		 8320 sect->alignment_power = 2;
8321
936e320b 8322 return elfcore_maybe_make_sect (abfd, ".reg2", sect);
252b5132
RH		 8323}
8324#endif /* defined (HAVE_LWPSTATUS_T) */
8325
b34976b6 8326static bfd_boolean
217aa764 8327elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note)
16e9c715
NC		 8328{
8329 char buf[30];
c044fabd 8330 char *name;
d4c88bbb 8331 size_t len;
c044fabd 8332 asection *sect;
4a6636fb
PA		 8333 int type;
8334 int is_active_thread;
8335 bfd_vma base_addr;
16e9c715 8336
4a6636fb 8337 if (note->descsz < 728)
b34976b6 8338 return TRUE;
16e9c715 8339
4a6636fb
PA		 8340 if (! CONST_STRNEQ (note->namedata, "win32"))
8341 return TRUE;
8342
8343 type = bfd_get_32 (abfd, note->descdata);
c044fabd 8344
4a6636fb 8345 switch (type)
16e9c715 8346 {
4a6636fb 8347 case 1 /* NOTE_INFO_PROCESS */:
16e9c715 8348 /* FIXME: need to add ->core_command. */
4a6636fb
PA		 8349 /* process_info.pid */
8350 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 8);
8351 /* process_info.signal */
8352 elf_tdata (abfd)->core_signal = bfd_get_32 (abfd, note->descdata + 12);
c044fabd 8353 break;
16e9c715 8354
4a6636fb 8355 case 2 /* NOTE_INFO_THREAD */:
16e9c715 8356 /* Make a ".reg/999" section. */
4a6636fb
PA		 8357 /* thread_info.tid */
8358 sprintf (buf, ".reg/%ld", (long) bfd_get_32 (abfd, note->descdata + 8));
c044fabd 8359
d4c88bbb 8360 len = strlen (buf) + 1;
a50b1753 8361 name = (char *) bfd_alloc (abfd, len);
16e9c715 8362 if (name == NULL)
b34976b6 8363 return FALSE;
c044fabd 8364
d4c88bbb 8365 memcpy (name, buf, len);
16e9c715 8366
117ed4f8 8367 sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS);
16e9c715 8368 if (sect == NULL)
b34976b6 8369 return FALSE;
c044fabd 8370
4a6636fb
PA		 8371 /* sizeof (thread_info.thread_context) */
8372 sect->size = 716;
8373 /* offsetof (thread_info.thread_context) */
8374 sect->filepos = note->descpos + 12;
16e9c715
NC		 8375 sect->alignment_power = 2;
8376
4a6636fb
PA		 8377 /* thread_info.is_active_thread */
8378 is_active_thread = bfd_get_32 (abfd, note->descdata + 8);
8379
8380 if (is_active_thread)
16e9c715 8381 if (! elfcore_maybe_make_sect (abfd, ".reg", sect))
b34976b6 8382 return FALSE;
16e9c715
NC		 8383 break;
8384
4a6636fb 8385 case 3 /* NOTE_INFO_MODULE */:
16e9c715 8386 /* Make a ".module/xxxxxxxx" section. */
4a6636fb
PA		 8387 /* module_info.base_address */
8388 base_addr = bfd_get_32 (abfd, note->descdata + 4);
0af1713e 8389 sprintf (buf, ".module/%08lx", (unsigned long) base_addr);
c044fabd 8390
d4c88bbb 8391 len = strlen (buf) + 1;
a50b1753 8392 name = (char *) bfd_alloc (abfd, len);
16e9c715 8393 if (name == NULL)
b34976b6 8394 return FALSE;
c044fabd 8395
d4c88bbb 8396 memcpy (name, buf, len);
252b5132 8397
117ed4f8 8398 sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS);
c044fabd 8399
16e9c715 8400 if (sect == NULL)
b34976b6 8401 return FALSE;
c044fabd 8402
eea6121a 8403 sect->size = note->descsz;
16e9c715 8404 sect->filepos = note->descpos;
16e9c715
NC		 8405 sect->alignment_power = 2;
8406 break;
8407
8408 default:
b34976b6 8409 return TRUE;
16e9c715
NC		 8410 }
8411
b34976b6 8412 return TRUE;
16e9c715 8413}
252b5132 8414
b34976b6 8415static bfd_boolean
217aa764 8416elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note)
252b5132 8417{
9c5bfbb7 8418 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
bb0082d6 8419
252b5132
RH		 8420 switch (note->type)
8421 {
8422 default:
b34976b6 8423 return TRUE;
252b5132 8424
252b5132 8425 case NT_PRSTATUS:
bb0082d6
AM		 8426 if (bed->elf_backend_grok_prstatus)
8427 if ((*bed->elf_backend_grok_prstatus) (abfd, note))
b34976b6 8428 return TRUE;
bb0082d6 8429#if defined (HAVE_PRSTATUS_T)
252b5132 8430 return elfcore_grok_prstatus (abfd, note);
bb0082d6 8431#else
b34976b6 8432 return TRUE;
252b5132
RH		 8433#endif
8434
8435#if defined (HAVE_PSTATUS_T)
8436 case NT_PSTATUS:
8437 return elfcore_grok_pstatus (abfd, note);
8438#endif
8439
8440#if defined (HAVE_LWPSTATUS_T)
8441 case NT_LWPSTATUS:
8442 return elfcore_grok_lwpstatus (abfd, note);
8443#endif
8444
8445 case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */
8446 return elfcore_grok_prfpreg (abfd, note);
8447
c044fabd 8448 case NT_WIN32PSTATUS:
16e9c715 8449 return elfcore_grok_win32pstatus (abfd, note);
16e9c715 8450
c044fabd 8451 case NT_PRXFPREG: /* Linux SSE extension */
e377ab71
MK		 8452 if (note->namesz == 6
8453 && strcmp (note->namedata, "LINUX") == 0)
ff08c6bb
JB		 8454 return elfcore_grok_prxfpreg (abfd, note);
8455 else
b34976b6 8456 return TRUE;
ff08c6bb 8457
4339cae0
L		 8458 case NT_X86_XSTATE: /* Linux XSAVE extension */
8459 if (note->namesz == 6
8460 && strcmp (note->namedata, "LINUX") == 0)
8461 return elfcore_grok_xstatereg (abfd, note);
8462 else
8463 return TRUE;
8464
97753bd5
AM		 8465 case NT_PPC_VMX:
8466 if (note->namesz == 6
8467 && strcmp (note->namedata, "LINUX") == 0)
8468 return elfcore_grok_ppc_vmx (abfd, note);
8469 else
8470 return TRUE;
8471
89eeb0bc
LM		 8472 case NT_PPC_VSX:
8473 if (note->namesz == 6
8474 && strcmp (note->namedata, "LINUX") == 0)
8475 return elfcore_grok_ppc_vsx (abfd, note);
8476 else
8477 return TRUE;
8478
0675e188
UW		 8479 case NT_S390_HIGH_GPRS:
8480 if (note->namesz == 6
8481 && strcmp (note->namedata, "LINUX") == 0)
8482 return elfcore_grok_s390_high_gprs (abfd, note);
8483 else
8484 return TRUE;
8485
d7eeb400
MS		 8486 case NT_S390_TIMER:
8487 if (note->namesz == 6
8488 && strcmp (note->namedata, "LINUX") == 0)
8489 return elfcore_grok_s390_timer (abfd, note);
8490 else
8491 return TRUE;
8492
8493 case NT_S390_TODCMP:
8494 if (note->namesz == 6
8495 && strcmp (note->namedata, "LINUX") == 0)
8496 return elfcore_grok_s390_todcmp (abfd, note);
8497 else
8498 return TRUE;
8499
8500 case NT_S390_TODPREG:
8501 if (note->namesz == 6
8502 && strcmp (note->namedata, "LINUX") == 0)
8503 return elfcore_grok_s390_todpreg (abfd, note);
8504 else
8505 return TRUE;
8506
8507 case NT_S390_CTRS:
8508 if (note->namesz == 6
8509 && strcmp (note->namedata, "LINUX") == 0)
8510 return elfcore_grok_s390_ctrs (abfd, note);
8511 else
8512 return TRUE;
8513
8514 case NT_S390_PREFIX:
8515 if (note->namesz == 6
8516 && strcmp (note->namedata, "LINUX") == 0)
8517 return elfcore_grok_s390_prefix (abfd, note);
8518 else
8519 return TRUE;
8520
355b81d9
UW		 8521 case NT_S390_LAST_BREAK:
8522 if (note->namesz == 6
8523 && strcmp (note->namedata, "LINUX") == 0)
8524 return elfcore_grok_s390_last_break (abfd, note);
8525 else
8526 return TRUE;
8527
8528 case NT_S390_SYSTEM_CALL:
8529 if (note->namesz == 6
8530 && strcmp (note->namedata, "LINUX") == 0)
8531 return elfcore_grok_s390_system_call (abfd, note);
8532 else
8533 return TRUE;
8534
faa9a424
UW		 8535 case NT_ARM_VFP:
8536 if (note->namesz == 6
8537 && strcmp (note->namedata, "LINUX") == 0)
8538 return elfcore_grok_arm_vfp (abfd, note);
8539 else
8540 return TRUE;
8541
252b5132
RH		 8542 case NT_PRPSINFO:
8543 case NT_PSINFO:
bb0082d6
AM		 8544 if (bed->elf_backend_grok_psinfo)
8545 if ((*bed->elf_backend_grok_psinfo) (abfd, note))
b34976b6 8546 return TRUE;
bb0082d6 8547#if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
252b5132 8548 return elfcore_grok_psinfo (abfd, note);
bb0082d6 8549#else
b34976b6 8550 return TRUE;
252b5132 8551#endif
3333a7c3
RM		 8552
8553 case NT_AUXV:
8554 {
117ed4f8
AM		 8555 asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv",
8556 SEC_HAS_CONTENTS);
3333a7c3
RM		 8557
8558 if (sect == NULL)
8559 return FALSE;
eea6121a 8560 sect->size = note->descsz;
3333a7c3 8561 sect->filepos = note->descpos;
3333a7c3
RM		 8562 sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32;
8563
8564 return TRUE;
8565 }
252b5132
RH		 8566 }
8567}
8568
718175fa
JK		 8569static bfd_boolean
8570elfobj_grok_gnu_build_id (bfd *abfd, Elf_Internal_Note *note)
8571{
8572 elf_tdata (abfd)->build_id_size = note->descsz;
a50b1753 8573 elf_tdata (abfd)->build_id = (bfd_byte *) bfd_alloc (abfd, note->descsz);
718175fa
JK		 8574 if (elf_tdata (abfd)->build_id == NULL)
8575 return FALSE;
8576
8577 memcpy (elf_tdata (abfd)->build_id, note->descdata, note->descsz);
8578
8579 return TRUE;
8580}
8581
8582static bfd_boolean
8583elfobj_grok_gnu_note (bfd *abfd, Elf_Internal_Note *note)
8584{
8585 switch (note->type)
8586 {
8587 default:
8588 return TRUE;
8589
8590 case NT_GNU_BUILD_ID:
8591 return elfobj_grok_gnu_build_id (abfd, note);
8592 }
8593}
8594
e21e5835
NC		 8595static bfd_boolean
8596elfobj_grok_stapsdt_note_1 (bfd *abfd, Elf_Internal_Note *note)
8597{
8598 struct sdt_note *cur =
8599 (struct sdt_note *) bfd_alloc (abfd, sizeof (struct sdt_note)
8600 + note->descsz);
8601
8602 cur->next = (struct sdt_note *) (elf_tdata (abfd))->sdt_note_head;
8603 cur->size = (bfd_size_type) note->descsz;
8604 memcpy (cur->data, note->descdata, note->descsz);
8605
8606 elf_tdata (abfd)->sdt_note_head = cur;
8607
8608 return TRUE;
8609}
8610
8611static bfd_boolean
8612elfobj_grok_stapsdt_note (bfd *abfd, Elf_Internal_Note *note)
8613{
8614 switch (note->type)
8615 {
8616 case NT_STAPSDT:
8617 return elfobj_grok_stapsdt_note_1 (abfd, note);
8618
8619 default:
8620 return TRUE;
8621 }
8622}
8623
b34976b6 8624static bfd_boolean
217aa764 8625elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp)
50b2bdb7
AM		 8626{
8627 char *cp;
8628
8629 cp = strchr (note->namedata, '@');
8630 if (cp != NULL)
8631 {
d2b64500 8632 *lwpidp = atoi(cp + 1);
b34976b6 8633 return TRUE;
50b2bdb7 8634 }
b34976b6 8635 return FALSE;
50b2bdb7
AM		 8636}
8637
b34976b6 8638static bfd_boolean
217aa764 8639elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note)
50b2bdb7 8640{
50b2bdb7
AM		 8641 /* Signal number at offset 0x08. */
8642 elf_tdata (abfd)->core_signal
8643 = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08);
8644
8645 /* Process ID at offset 0x50. */
8646 elf_tdata (abfd)->core_pid
8647 = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50);
8648
8649 /* Command name at 0x7c (max 32 bytes, including nul). */
8650 elf_tdata (abfd)->core_command
8651 = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31);
8652
7720ba9f
MK		 8653 return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo",
8654 note);
50b2bdb7
AM		 8655}
8656
b34976b6 8657static bfd_boolean
217aa764 8658elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note)
50b2bdb7
AM		 8659{
8660 int lwp;
8661
8662 if (elfcore_netbsd_get_lwpid (note, &lwp))
8663 elf_tdata (abfd)->core_lwpid = lwp;
8664
b4db1224 8665 if (note->type == NT_NETBSDCORE_PROCINFO)
50b2bdb7
AM		 8666 {
8667 /* NetBSD-specific core "procinfo". Note that we expect to
08a40648
AM		 8668 find this note before any of the others, which is fine,
8669 since the kernel writes this note out first when it
8670 creates a core file. */
47d9a591 8671
50b2bdb7
AM		 8672 return elfcore_grok_netbsd_procinfo (abfd, note);
8673 }
8674
b4db1224
JT		 8675 /* As of Jan 2002 there are no other machine-independent notes
8676 defined for NetBSD core files. If the note type is less
8677 than the start of the machine-dependent note types, we don't
8678 understand it. */
47d9a591 8679
b4db1224 8680 if (note->type < NT_NETBSDCORE_FIRSTMACH)
b34976b6 8681 return TRUE;
50b2bdb7
AM		 8682
8683
8684 switch (bfd_get_arch (abfd))
8685 {
08a40648
AM		 8686 /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and
8687 PT_GETFPREGS == mach+2. */
50b2bdb7
AM		 8688
8689 case bfd_arch_alpha:
8690 case bfd_arch_sparc:
8691 switch (note->type)
08a40648
AM		 8692 {
8693 case NT_NETBSDCORE_FIRSTMACH+0:
8694 return elfcore_make_note_pseudosection (abfd, ".reg", note);
50b2bdb7 8695
08a40648
AM		 8696 case NT_NETBSDCORE_FIRSTMACH+2:
8697 return elfcore_make_note_pseudosection (abfd, ".reg2", note);
50b2bdb7 8698
08a40648
AM		 8699 default:
8700 return TRUE;
8701 }
50b2bdb7 8702
08a40648
AM		 8703 /* On all other arch's, PT_GETREGS == mach+1 and
8704 PT_GETFPREGS == mach+3. */
50b2bdb7
AM		 8705
8706 default:
8707 switch (note->type)
08a40648
AM		 8708 {
8709 case NT_NETBSDCORE_FIRSTMACH+1:
8710 return elfcore_make_note_pseudosection (abfd, ".reg", note);
50b2bdb7 8711
08a40648
AM		 8712 case NT_NETBSDCORE_FIRSTMACH+3:
8713 return elfcore_make_note_pseudosection (abfd, ".reg2", note);
50b2bdb7 8714
08a40648
AM		 8715 default:
8716 return TRUE;
8717 }
50b2bdb7
AM		 8718 }
8719 /* NOTREACHED */
8720}
8721
67cc5033
MK		 8722static bfd_boolean
8723elfcore_grok_openbsd_procinfo (bfd *abfd, Elf_Internal_Note *note)
8724{
8725 /* Signal number at offset 0x08. */
8726 elf_tdata (abfd)->core_signal
8727 = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08);
8728
8729 /* Process ID at offset 0x20. */
8730 elf_tdata (abfd)->core_pid
8731 = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x20);
8732
8733 /* Command name at 0x48 (max 32 bytes, including nul). */
8734 elf_tdata (abfd)->core_command
8735 = _bfd_elfcore_strndup (abfd, note->descdata + 0x48, 31);
8736
8737 return TRUE;
8738}
8739
8740static bfd_boolean
8741elfcore_grok_openbsd_note (bfd *abfd, Elf_Internal_Note *note)
8742{
8743 if (note->type == NT_OPENBSD_PROCINFO)
8744 return elfcore_grok_openbsd_procinfo (abfd, note);
8745
8746 if (note->type == NT_OPENBSD_REGS)
8747 return elfcore_make_note_pseudosection (abfd, ".reg", note);
8748
8749 if (note->type == NT_OPENBSD_FPREGS)
8750 return elfcore_make_note_pseudosection (abfd, ".reg2", note);
8751
8752 if (note->type == NT_OPENBSD_XFPREGS)
8753 return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note);
8754
8755 if (note->type == NT_OPENBSD_AUXV)
8756 {
8757 asection *sect = bfd_make_section_anyway_with_flags (abfd, ".auxv",
8758 SEC_HAS_CONTENTS);
8759
8760 if (sect == NULL)
8761 return FALSE;
8762 sect->size = note->descsz;
8763 sect->filepos = note->descpos;
8764 sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32;
8765
8766 return TRUE;
8767 }
8768
8769 if (note->type == NT_OPENBSD_WCOOKIE)
8770 {
8771 asection *sect = bfd_make_section_anyway_with_flags (abfd, ".wcookie",
8772 SEC_HAS_CONTENTS);
8773
8774 if (sect == NULL)
8775 return FALSE;
8776 sect->size = note->descsz;
8777 sect->filepos = note->descpos;
8778 sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32;
8779
8780 return TRUE;
8781 }
8782
8783 return TRUE;
8784}
8785
07c6e936 8786static bfd_boolean
d3fd4074 8787elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, long *tid)
07c6e936
NC		 8788{
8789 void *ddata = note->descdata;
8790 char buf[100];
8791 char *name;
8792 asection *sect;
f8843e87
AM		 8793 short sig;
8794 unsigned flags;
07c6e936
NC		 8795
8796 /* nto_procfs_status 'pid' field is at offset 0. */
8797 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, (bfd_byte *) ddata);
8798
f8843e87
AM		 8799 /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */
8800 *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4);
8801
8802 /* nto_procfs_status 'flags' field is at offset 8. */
8803 flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8);
07c6e936
NC		 8804
8805 /* nto_procfs_status 'what' field is at offset 14. */
f8843e87
AM		 8806 if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0)
8807 {
8808 elf_tdata (abfd)->core_signal = sig;
8809 elf_tdata (abfd)->core_lwpid = *tid;
8810 }
07c6e936 8811
f8843e87
AM		 8812 /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores
8813 do not come from signals so we make sure we set the current
8814 thread just in case. */
8815 if (flags & 0x00000080)
8816 elf_tdata (abfd)->core_lwpid = *tid;
07c6e936
NC		 8817
8818 /* Make a ".qnx_core_status/%d" section. */
d3fd4074 8819 sprintf (buf, ".qnx_core_status/%ld", *tid);
07c6e936 8820
a50b1753 8821 name = (char *) bfd_alloc (abfd, strlen (buf) + 1);
07c6e936
NC		 8822 if (name == NULL)
8823 return FALSE;
8824 strcpy (name, buf);
8825
117ed4f8 8826 sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS);
07c6e936
NC		 8827 if (sect == NULL)
8828 return FALSE;
8829
eea6121a 8830 sect->size = note->descsz;
07c6e936 8831 sect->filepos = note->descpos;
07c6e936
NC		 8832 sect->alignment_power = 2;
8833
8834 return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect));
8835}
8836
8837static bfd_boolean
d69f560c
KW		 8838elfcore_grok_nto_regs (bfd *abfd,
8839 Elf_Internal_Note *note,
d3fd4074 8840 long tid,
d69f560c 8841 char *base)
07c6e936
NC		 8842{
8843 char buf[100];
8844 char *name;
8845 asection *sect;
8846
d69f560c 8847 /* Make a "(base)/%d" section. */
d3fd4074 8848 sprintf (buf, "%s/%ld", base, tid);
07c6e936 8849
a50b1753 8850 name = (char *) bfd_alloc (abfd, strlen (buf) + 1);
07c6e936
NC		 8851 if (name == NULL)
8852 return FALSE;
8853 strcpy (name, buf);
8854
117ed4f8 8855 sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS);
07c6e936
NC		 8856 if (sect == NULL)
8857 return FALSE;
8858
eea6121a 8859 sect->size = note->descsz;
07c6e936 8860 sect->filepos = note->descpos;
07c6e936
NC		 8861 sect->alignment_power = 2;
8862
f8843e87
AM		 8863 /* This is the current thread. */
8864 if (elf_tdata (abfd)->core_lwpid == tid)
d69f560c 8865 return elfcore_maybe_make_sect (abfd, base, sect);
f8843e87
AM		 8866
8867 return TRUE;
07c6e936
NC		 8868}
8869
8870#define BFD_QNT_CORE_INFO 7
8871#define BFD_QNT_CORE_STATUS 8
8872#define BFD_QNT_CORE_GREG 9
8873#define BFD_QNT_CORE_FPREG 10
8874
8875static bfd_boolean
217aa764 8876elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note)
07c6e936
NC		 8877{
8878 /* Every GREG section has a STATUS section before it. Store the
811072d8 8879 tid from the previous call to pass down to the next gregs
07c6e936 8880 function. */
d3fd4074 8881 static long tid = 1;
07c6e936
NC		 8882
8883 switch (note->type)
8884 {
d69f560c
KW		 8885 case BFD_QNT_CORE_INFO:
8886 return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note);
8887 case BFD_QNT_CORE_STATUS:
8888 return elfcore_grok_nto_status (abfd, note, &tid);
8889 case BFD_QNT_CORE_GREG:
8890 return elfcore_grok_nto_regs (abfd, note, tid, ".reg");
8891 case BFD_QNT_CORE_FPREG:
8892 return elfcore_grok_nto_regs (abfd, note, tid, ".reg2");
8893 default:
8894 return TRUE;
07c6e936
NC		 8895 }
8896}
8897
b15fa79e
AM		 8898static bfd_boolean
8899elfcore_grok_spu_note (bfd *abfd, Elf_Internal_Note *note)
8900{
8901 char *name;
8902 asection *sect;
8903 size_t len;
8904
8905 /* Use note name as section name. */
8906 len = note->namesz;
a50b1753 8907 name = (char *) bfd_alloc (abfd, len);
b15fa79e
AM		 8908 if (name == NULL)
8909 return FALSE;
8910 memcpy (name, note->namedata, len);
8911 name[len - 1] = '\0';
8912
8913 sect = bfd_make_section_anyway_with_flags (abfd, name, SEC_HAS_CONTENTS);
8914 if (sect == NULL)
8915 return FALSE;
8916
8917 sect->size = note->descsz;
8918 sect->filepos = note->descpos;
8919 sect->alignment_power = 1;
8920
8921 return TRUE;
8922}
8923
7c76fa91
MS		 8924/* Function: elfcore_write_note
8925
47d9a591 8926 Inputs:
a39f3346 8927 buffer to hold note, and current size of buffer
7c76fa91
MS		 8928 name of note
8929 type of note
8930 data for note
8931 size of data for note
8932
a39f3346
AM		 8933 Writes note to end of buffer. ELF64 notes are written exactly as
8934 for ELF32, despite the current (as of 2006) ELF gabi specifying
8935 that they ought to have 8-byte namesz and descsz field, and have
8936 8-byte alignment. Other writers, eg. Linux kernel, do the same.
8937
7c76fa91 8938 Return:
a39f3346 8939 Pointer to realloc'd buffer, *BUFSIZ updated. */
7c76fa91
MS		 8940
8941char *
a39f3346 8942elfcore_write_note (bfd *abfd,
217aa764 8943 char *buf,
a39f3346 8944 int *bufsiz,
217aa764 8945 const char *name,
a39f3346 8946 int type,
217aa764 8947 const void *input,
a39f3346 8948 int size)
7c76fa91
MS		 8949{
8950 Elf_External_Note *xnp;
d4c88bbb 8951 size_t namesz;
d4c88bbb 8952 size_t newspace;
a39f3346 8953 char *dest;
7c76fa91 8954
d4c88bbb 8955 namesz = 0;
d4c88bbb 8956 if (name != NULL)
a39f3346 8957 namesz = strlen (name) + 1;
d4c88bbb 8958
a39f3346 8959 newspace = 12 + ((namesz + 3) & -4) + ((size + 3) & -4);
d4c88bbb 8960
a50b1753 8961 buf = (char *) realloc (buf, *bufsiz + newspace);
14b1c01e
AM		 8962 if (buf == NULL)
8963 return buf;
a39f3346 8964 dest = buf + *bufsiz;
7c76fa91
MS		 8965 *bufsiz += newspace;
8966 xnp = (Elf_External_Note *) dest;
8967 H_PUT_32 (abfd, namesz, xnp->namesz);
8968 H_PUT_32 (abfd, size, xnp->descsz);
8969 H_PUT_32 (abfd, type, xnp->type);
d4c88bbb
AM		 8970 dest = xnp->name;
8971 if (name != NULL)
8972 {
8973 memcpy (dest, name, namesz);
8974 dest += namesz;
a39f3346 8975 while (namesz & 3)
d4c88bbb
AM		 8976 {
8977 *dest++ = '\0';
a39f3346 8978 ++namesz;
d4c88bbb
AM		 8979 }
8980 }
8981 memcpy (dest, input, size);
a39f3346
AM		 8982 dest += size;
8983 while (size & 3)
8984 {
8985 *dest++ = '\0';
8986 ++size;
8987 }
8988 return buf;
7c76fa91
MS		 8989}
8990
7c76fa91 8991char *
217aa764
AM		 8992elfcore_write_prpsinfo (bfd *abfd,
8993 char *buf,
8994 int *bufsiz,
8995 const char *fname,
8996 const char *psargs)
7c76fa91 8997{
183e98be
AM		 8998 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
8999
9000 if (bed->elf_backend_write_core_note != NULL)
9001 {
9002 char *ret;
9003 ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz,
9004 NT_PRPSINFO, fname, psargs);
9005 if (ret != NULL)
9006 return ret;
9007 }
7c76fa91 9008
1f20dca5 9009#if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
183e98be
AM		 9010#if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T)
9011 if (bed->s->elfclass == ELFCLASS32)
9012 {
9013#if defined (HAVE_PSINFO32_T)
9014 psinfo32_t data;
9015 int note_type = NT_PSINFO;
9016#else
9017 prpsinfo32_t data;
9018 int note_type = NT_PRPSINFO;
9019#endif
9020
9021 memset (&data, 0, sizeof (data));
9022 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
9023 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
9024 return elfcore_write_note (abfd, buf, bufsiz,
1f20dca5 9025 "CORE", note_type, &data, sizeof (data));
183e98be
AM		 9026 }
9027 else
9028#endif
9029 {
7c76fa91 9030#if defined (HAVE_PSINFO_T)
183e98be
AM		 9031 psinfo_t data;
9032 int note_type = NT_PSINFO;
7c76fa91 9033#else
183e98be
AM		 9034 prpsinfo_t data;
9035 int note_type = NT_PRPSINFO;
7c76fa91
MS		 9036#endif
9037
183e98be
AM		 9038 memset (&data, 0, sizeof (data));
9039 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
9040 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
9041 return elfcore_write_note (abfd, buf, bufsiz,
1f20dca5 9042 "CORE", note_type, &data, sizeof (data));
183e98be 9043 }
7c76fa91
MS		 9044#endif /* PSINFO_T or PRPSINFO_T */
9045
1f20dca5
UW		 9046 free (buf);
9047 return NULL;
9048}
9049
7c76fa91 9050char *
217aa764
AM		 9051elfcore_write_prstatus (bfd *abfd,
9052 char *buf,
9053 int *bufsiz,
9054 long pid,
9055 int cursig,
9056 const void *gregs)
7c76fa91 9057{
183e98be 9058 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
7c76fa91 9059
183e98be
AM		 9060 if (bed->elf_backend_write_core_note != NULL)
9061 {
9062 char *ret;
9063 ret = (*bed->elf_backend_write_core_note) (abfd, buf, bufsiz,
9064 NT_PRSTATUS,
9065 pid, cursig, gregs);
9066 if (ret != NULL)
9067 return ret;
9068 }
9069
1f20dca5 9070#if defined (HAVE_PRSTATUS_T)
183e98be
AM		 9071#if defined (HAVE_PRSTATUS32_T)
9072 if (bed->s->elfclass == ELFCLASS32)
9073 {
9074 prstatus32_t prstat;
9075
9076 memset (&prstat, 0, sizeof (prstat));
9077 prstat.pr_pid = pid;
9078 prstat.pr_cursig = cursig;
9079 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
1f20dca5 9080 return elfcore_write_note (abfd, buf, bufsiz, "CORE",
183e98be
AM		 9081 NT_PRSTATUS, &prstat, sizeof (prstat));
9082 }
9083 else
9084#endif
9085 {
9086 prstatus_t prstat;
9087
9088 memset (&prstat, 0, sizeof (prstat));
9089 prstat.pr_pid = pid;
9090 prstat.pr_cursig = cursig;
9091 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
1f20dca5 9092 return elfcore_write_note (abfd, buf, bufsiz, "CORE",
183e98be
AM		 9093 NT_PRSTATUS, &prstat, sizeof (prstat));
9094 }
7c76fa91
MS		 9095#endif /* HAVE_PRSTATUS_T */
9096
1f20dca5
UW		 9097 free (buf);
9098 return NULL;
9099}
9100
51316059
MS		 9101#if defined (HAVE_LWPSTATUS_T)
9102char *
217aa764
AM		 9103elfcore_write_lwpstatus (bfd *abfd,
9104 char *buf,
9105 int *bufsiz,
9106 long pid,
9107 int cursig,
9108 const void *gregs)
51316059
MS		 9109{
9110 lwpstatus_t lwpstat;
183e98be 9111 const char *note_name = "CORE";
51316059
MS		 9112
9113 memset (&lwpstat, 0, sizeof (lwpstat));
9114 lwpstat.pr_lwpid = pid >> 16;
9115 lwpstat.pr_cursig = cursig;
9116#if defined (HAVE_LWPSTATUS_T_PR_REG)
9117 memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg));
9118#elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
9119#if !defined(gregs)
9120 memcpy (lwpstat.pr_context.uc_mcontext.gregs,
9121 gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs));
9122#else
9123 memcpy (lwpstat.pr_context.uc_mcontext.__gregs,
9124 gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs));
9125#endif
9126#endif
47d9a591 9127 return elfcore_write_note (abfd, buf, bufsiz, note_name,
51316059
MS		 9128 NT_LWPSTATUS, &lwpstat, sizeof (lwpstat));
9129}
9130#endif /* HAVE_LWPSTATUS_T */
9131
7c76fa91
MS		 9132#if defined (HAVE_PSTATUS_T)
9133char *
217aa764
AM		 9134elfcore_write_pstatus (bfd *abfd,
9135 char *buf,
9136 int *bufsiz,
9137 long pid,
6c10990d
NC		 9138 int cursig ATTRIBUTE_UNUSED,
9139 const void *gregs ATTRIBUTE_UNUSED)
7c76fa91 9140{
183e98be
AM		 9141 const char *note_name = "CORE";
9142#if defined (HAVE_PSTATUS32_T)
9143 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
7c76fa91 9144
183e98be
AM		 9145 if (bed->s->elfclass == ELFCLASS32)
9146 {
9147 pstatus32_t pstat;
9148
9149 memset (&pstat, 0, sizeof (pstat));
9150 pstat.pr_pid = pid & 0xffff;
9151 buf = elfcore_write_note (abfd, buf, bufsiz, note_name,
9152 NT_PSTATUS, &pstat, sizeof (pstat));
9153 return buf;
9154 }
9155 else
9156#endif
9157 {
9158 pstatus_t pstat;
9159
9160 memset (&pstat, 0, sizeof (pstat));
9161 pstat.pr_pid = pid & 0xffff;
9162 buf = elfcore_write_note (abfd, buf, bufsiz, note_name,
9163 NT_PSTATUS, &pstat, sizeof (pstat));
9164 return buf;
9165 }
7c76fa91
MS		 9166}
9167#endif /* HAVE_PSTATUS_T */
9168
9169char *
217aa764
AM		 9170elfcore_write_prfpreg (bfd *abfd,
9171 char *buf,
9172 int *bufsiz,
9173 const void *fpregs,
9174 int size)
7c76fa91 9175{
183e98be 9176 const char *note_name = "CORE";
47d9a591 9177 return elfcore_write_note (abfd, buf, bufsiz,
7c76fa91
MS		 9178 note_name, NT_FPREGSET, fpregs, size);
9179}
9180
9181char *
217aa764
AM		 9182elfcore_write_prxfpreg (bfd *abfd,
9183 char *buf,
9184 int *bufsiz,
9185 const void *xfpregs,
9186 int size)
7c76fa91
MS		 9187{
9188 char *note_name = "LINUX";
47d9a591 9189 return elfcore_write_note (abfd, buf, bufsiz,
7c76fa91
MS		 9190 note_name, NT_PRXFPREG, xfpregs, size);
9191}
9192
4339cae0
L		 9193char *
9194elfcore_write_xstatereg (bfd *abfd, char *buf, int *bufsiz,
9195 const void *xfpregs, int size)
9196{
9197 char *note_name = "LINUX";
9198 return elfcore_write_note (abfd, buf, bufsiz,
9199 note_name, NT_X86_XSTATE, xfpregs, size);
9200}
9201
97753bd5
AM		 9202char *
9203elfcore_write_ppc_vmx (bfd *abfd,
9204 char *buf,
9205 int *bufsiz,
9206 const void *ppc_vmx,
9207 int size)
9208{
9209 char *note_name = "LINUX";
9210 return elfcore_write_note (abfd, buf, bufsiz,
9211 note_name, NT_PPC_VMX, ppc_vmx, size);
9212}
9213
89eeb0bc
LM		 9214char *
9215elfcore_write_ppc_vsx (bfd *abfd,
9216 char *buf,
9217 int *bufsiz,
9218 const void *ppc_vsx,
9219 int size)
9220{
9221 char *note_name = "LINUX";
9222 return elfcore_write_note (abfd, buf, bufsiz,
9223 note_name, NT_PPC_VSX, ppc_vsx, size);
9224}
9225
0675e188
UW		 9226static char *
9227elfcore_write_s390_high_gprs (bfd *abfd,
9228 char *buf,
9229 int *bufsiz,
9230 const void *s390_high_gprs,
9231 int size)
9232{
9233 char *note_name = "LINUX";
9234 return elfcore_write_note (abfd, buf, bufsiz,
9235 note_name, NT_S390_HIGH_GPRS,
9236 s390_high_gprs, size);
9237}
9238
d7eeb400
MS		 9239char *
9240elfcore_write_s390_timer (bfd *abfd,
9241 char *buf,
9242 int *bufsiz,
9243 const void *s390_timer,
9244 int size)
9245{
9246 char *note_name = "LINUX";
9247 return elfcore_write_note (abfd, buf, bufsiz,
9248 note_name, NT_S390_TIMER, s390_timer, size);
9249}
9250
9251char *
9252elfcore_write_s390_todcmp (bfd *abfd,
9253 char *buf,
9254 int *bufsiz,
9255 const void *s390_todcmp,
9256 int size)
9257{
9258 char *note_name = "LINUX";
9259 return elfcore_write_note (abfd, buf, bufsiz,
9260 note_name, NT_S390_TODCMP, s390_todcmp, size);
9261}
9262
9263char *
9264elfcore_write_s390_todpreg (bfd *abfd,
9265 char *buf,
9266 int *bufsiz,
9267 const void *s390_todpreg,
9268 int size)
9269{
9270 char *note_name = "LINUX";
9271 return elfcore_write_note (abfd, buf, bufsiz,
9272 note_name, NT_S390_TODPREG, s390_todpreg, size);
9273}
9274
9275char *
9276elfcore_write_s390_ctrs (bfd *abfd,
9277 char *buf,
9278 int *bufsiz,
9279 const void *s390_ctrs,
9280 int size)
9281{
9282 char *note_name = "LINUX";
9283 return elfcore_write_note (abfd, buf, bufsiz,
9284 note_name, NT_S390_CTRS, s390_ctrs, size);
9285}
9286
9287char *
9288elfcore_write_s390_prefix (bfd *abfd,
9289 char *buf,
9290 int *bufsiz,
9291 const void *s390_prefix,
9292 int size)
9293{
9294 char *note_name = "LINUX";
9295 return elfcore_write_note (abfd, buf, bufsiz,
9296 note_name, NT_S390_PREFIX, s390_prefix, size);
9297}
9298
355b81d9
UW		 9299char *
9300elfcore_write_s390_last_break (bfd *abfd,
9301 char *buf,
9302 int *bufsiz,
9303 const void *s390_last_break,
9304 int size)
9305{
9306 char *note_name = "LINUX";
9307 return elfcore_write_note (abfd, buf, bufsiz,
9308 note_name, NT_S390_LAST_BREAK,
9309 s390_last_break, size);
9310}
9311
9312char *
9313elfcore_write_s390_system_call (bfd *abfd,
9314 char *buf,
9315 int *bufsiz,
9316 const void *s390_system_call,
9317 int size)
9318{
9319 char *note_name = "LINUX";
9320 return elfcore_write_note (abfd, buf, bufsiz,
9321 note_name, NT_S390_SYSTEM_CALL,
9322 s390_system_call, size);
9323}
9324
faa9a424
UW		 9325char *
9326elfcore_write_arm_vfp (bfd *abfd,
9327 char *buf,
9328 int *bufsiz,
9329 const void *arm_vfp,
9330 int size)
9331{
9332 char *note_name = "LINUX";
9333 return elfcore_write_note (abfd, buf, bufsiz,
9334 note_name, NT_ARM_VFP, arm_vfp, size);
9335}
9336
bb864ac1
CES		 9337char *
9338elfcore_write_register_note (bfd *abfd,
9339 char *buf,
9340 int *bufsiz,
9341 const char *section,
9342 const void *data,
9343 int size)
9344{
9345 if (strcmp (section, ".reg2") == 0)
9346 return elfcore_write_prfpreg (abfd, buf, bufsiz, data, size);
9347 if (strcmp (section, ".reg-xfp") == 0)
9348 return elfcore_write_prxfpreg (abfd, buf, bufsiz, data, size);
4339cae0
L		 9349 if (strcmp (section, ".reg-xstate") == 0)
9350 return elfcore_write_xstatereg (abfd, buf, bufsiz, data, size);
bb864ac1
CES		 9351 if (strcmp (section, ".reg-ppc-vmx") == 0)
9352 return elfcore_write_ppc_vmx (abfd, buf, bufsiz, data, size);
89eeb0bc
LM		 9353 if (strcmp (section, ".reg-ppc-vsx") == 0)
9354 return elfcore_write_ppc_vsx (abfd, buf, bufsiz, data, size);
0675e188
UW		 9355 if (strcmp (section, ".reg-s390-high-gprs") == 0)
9356 return elfcore_write_s390_high_gprs (abfd, buf, bufsiz, data, size);
d7eeb400
MS		 9357 if (strcmp (section, ".reg-s390-timer") == 0)
9358 return elfcore_write_s390_timer (abfd, buf, bufsiz, data, size);
9359 if (strcmp (section, ".reg-s390-todcmp") == 0)
9360 return elfcore_write_s390_todcmp (abfd, buf, bufsiz, data, size);
9361 if (strcmp (section, ".reg-s390-todpreg") == 0)
9362 return elfcore_write_s390_todpreg (abfd, buf, bufsiz, data, size);
9363 if (strcmp (section, ".reg-s390-ctrs") == 0)
9364 return elfcore_write_s390_ctrs (abfd, buf, bufsiz, data, size);
9365 if (strcmp (section, ".reg-s390-prefix") == 0)
9366 return elfcore_write_s390_prefix (abfd, buf, bufsiz, data, size);
355b81d9
UW		 9367 if (strcmp (section, ".reg-s390-last-break") == 0)
9368 return elfcore_write_s390_last_break (abfd, buf, bufsiz, data, size);
9369 if (strcmp (section, ".reg-s390-system-call") == 0)
9370 return elfcore_write_s390_system_call (abfd, buf, bufsiz, data, size);
faa9a424
UW		 9371 if (strcmp (section, ".reg-arm-vfp") == 0)
9372 return elfcore_write_arm_vfp (abfd, buf, bufsiz, data, size);
bb864ac1
CES		 9373 return NULL;
9374}
9375
b34976b6 9376static bfd_boolean
718175fa 9377elf_parse_notes (bfd *abfd, char *buf, size_t size, file_ptr offset)
252b5132 9378{
c044fabd 9379 char *p;
252b5132 9380
252b5132
RH		 9381 p = buf;
9382 while (p < buf + size)
9383 {
c044fabd
KH		 9384 /* FIXME: bad alignment assumption. */
9385 Elf_External_Note *xnp = (Elf_External_Note *) p;
252b5132
RH		 9386 Elf_Internal_Note in;
9387
baea7ef1
AM		 9388 if (offsetof (Elf_External_Note, name) > buf - p + size)
9389 return FALSE;
9390
dc810e39 9391 in.type = H_GET_32 (abfd, xnp->type);
252b5132 9392
dc810e39 9393 in.namesz = H_GET_32 (abfd, xnp->namesz);
252b5132 9394 in.namedata = xnp->name;
baea7ef1
AM		 9395 if (in.namesz > buf - in.namedata + size)
9396 return FALSE;
252b5132 9397
dc810e39 9398 in.descsz = H_GET_32 (abfd, xnp->descsz);
252b5132
RH		 9399 in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4);
9400 in.descpos = offset + (in.descdata - buf);
baea7ef1
AM		 9401 if (in.descsz != 0
9402 && (in.descdata >= buf + size
9403 || in.descsz > buf - in.descdata + size))
9404 return FALSE;
252b5132 9405
718175fa
JK		 9406 switch (bfd_get_format (abfd))
9407 {
9408 default:
9409 return TRUE;
9410
9411 case bfd_core:
9412 if (CONST_STRNEQ (in.namedata, "NetBSD-CORE"))
9413 {
9414 if (! elfcore_grok_netbsd_note (abfd, &in))
9415 return FALSE;
9416 }
67cc5033
MK		 9417 else if (CONST_STRNEQ (in.namedata, "OpenBSD"))
9418 {
9419 if (! elfcore_grok_openbsd_note (abfd, &in))
9420 return FALSE;
9421 }
718175fa
JK		 9422 else if (CONST_STRNEQ (in.namedata, "QNX"))
9423 {
9424 if (! elfcore_grok_nto_note (abfd, &in))
9425 return FALSE;
9426 }
b15fa79e
AM		 9427 else if (CONST_STRNEQ (in.namedata, "SPU/"))
9428 {
9429 if (! elfcore_grok_spu_note (abfd, &in))
9430 return FALSE;
9431 }
718175fa
JK		 9432 else
9433 {
9434 if (! elfcore_grok_note (abfd, &in))
9435 return FALSE;
9436 }
9437 break;
9438
9439 case bfd_object:
9440 if (in.namesz == sizeof "GNU" && strcmp (in.namedata, "GNU") == 0)
9441 {
9442 if (! elfobj_grok_gnu_note (abfd, &in))
9443 return FALSE;
9444 }
e21e5835
NC		 9445 else if (in.namesz == sizeof "stapsdt"
9446 && strcmp (in.namedata, "stapsdt") == 0)
9447 {
9448 if (! elfobj_grok_stapsdt_note (abfd, &in))
9449 return FALSE;
9450 }
718175fa 9451 break;
08a40648 9452 }
252b5132
RH		 9453
9454 p = in.descdata + BFD_ALIGN (in.descsz, 4);
9455 }
9456
718175fa
JK		 9457 return TRUE;
9458}
9459
9460static bfd_boolean
9461elf_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size)
9462{
9463 char *buf;
9464
9465 if (size <= 0)
9466 return TRUE;
9467
9468 if (bfd_seek (abfd, offset, SEEK_SET) != 0)
9469 return FALSE;
9470
a50b1753 9471 buf = (char *) bfd_malloc (size);
718175fa
JK		 9472 if (buf == NULL)
9473 return FALSE;
9474
9475 if (bfd_bread (buf, size, abfd) != size
9476 || !elf_parse_notes (abfd, buf, size, offset))
9477 {
9478 free (buf);
9479 return FALSE;
9480 }
9481
252b5132 9482 free (buf);
b34976b6 9483 return TRUE;
252b5132 9484}
98d8431c
JB		 9485\f
9486/* Providing external access to the ELF program header table. */
9487
9488/* Return an upper bound on the number of bytes required to store a
9489 copy of ABFD's program header table entries. Return -1 if an error
9490 occurs; bfd_get_error will return an appropriate code. */
c044fabd 9491
98d8431c 9492long
217aa764 9493bfd_get_elf_phdr_upper_bound (bfd *abfd)
98d8431c
JB		 9494{
9495 if (abfd->xvec->flavour != bfd_target_elf_flavour)
9496 {
9497 bfd_set_error (bfd_error_wrong_format);
9498 return -1;
9499 }
9500
936e320b 9501 return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr);
98d8431c
JB		 9502}
9503
98d8431c
JB		 9504/* Copy ABFD's program header table entries to *PHDRS. The entries
9505 will be stored as an array of Elf_Internal_Phdr structures, as
9506 defined in include/elf/internal.h. To find out how large the
9507 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
9508
9509 Return the number of program header table entries read, or -1 if an
9510 error occurs; bfd_get_error will return an appropriate code. */
c044fabd 9511
98d8431c 9512int
217aa764 9513bfd_get_elf_phdrs (bfd *abfd, void *phdrs)
98d8431c
JB		 9514{
9515 int num_phdrs;
9516
9517 if (abfd->xvec->flavour != bfd_target_elf_flavour)
9518 {
9519 bfd_set_error (bfd_error_wrong_format);
9520 return -1;
9521 }
9522
9523 num_phdrs = elf_elfheader (abfd)->e_phnum;
c044fabd 9524 memcpy (phdrs, elf_tdata (abfd)->phdr,
98d8431c
JB		 9525 num_phdrs * sizeof (Elf_Internal_Phdr));
9526
9527 return num_phdrs;
9528}
ae4221d7 9529
db6751f2 9530enum elf_reloc_type_class
217aa764 9531_bfd_elf_reloc_type_class (const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED)
db6751f2
JJ		 9532{
9533 return reloc_class_normal;
9534}
f8df10f4 9535
47d9a591 9536/* For RELA architectures, return the relocation value for a
f8df10f4
JJ		 9537 relocation against a local symbol. */
9538
9539bfd_vma
217aa764
AM		 9540_bfd_elf_rela_local_sym (bfd *abfd,
9541 Elf_Internal_Sym *sym,
8517fae7 9542 asection **psec,
217aa764 9543 Elf_Internal_Rela *rel)
f8df10f4 9544{
8517fae7 9545 asection *sec = *psec;
f8df10f4
JJ		 9546 bfd_vma relocation;
9547
9548 relocation = (sec->output_section->vma
9549 + sec->output_offset
9550 + sym->st_value);
9551 if ((sec->flags & SEC_MERGE)
c629eae0 9552 && ELF_ST_TYPE (sym->st_info) == STT_SECTION
dbaa2011 9553 && sec->sec_info_type == SEC_INFO_TYPE_MERGE)
f8df10f4 9554 {
f8df10f4 9555 rel->r_addend =
8517fae7 9556 _bfd_merged_section_offset (abfd, psec,
65765700 9557 elf_section_data (sec)->sec_info,
753731ee
AM		 9558 sym->st_value + rel->r_addend);
9559 if (sec != *psec)
9560 {
9561 /* If we have changed the section, and our original section is
9562 marked with SEC_EXCLUDE, it means that the original
9563 SEC_MERGE section has been completely subsumed in some
9564 other SEC_MERGE section. In this case, we need to leave
9565 some info around for --emit-relocs. */
9566 if ((sec->flags & SEC_EXCLUDE) != 0)
9567 sec->kept_section = *psec;
9568 sec = *psec;
9569 }
8517fae7
AM		 9570 rel->r_addend -= relocation;
9571 rel->r_addend += sec->output_section->vma + sec->output_offset;
f8df10f4
JJ		 9572 }
9573 return relocation;
9574}
c629eae0
JJ		 9575
9576bfd_vma
217aa764
AM		 9577_bfd_elf_rel_local_sym (bfd *abfd,
9578 Elf_Internal_Sym *sym,
9579 asection **psec,
9580 bfd_vma addend)
47d9a591 9581{
c629eae0
JJ		 9582 asection *sec = *psec;
9583
dbaa2011 9584 if (sec->sec_info_type != SEC_INFO_TYPE_MERGE)
c629eae0
JJ		 9585 return sym->st_value + addend;
9586
9587 return _bfd_merged_section_offset (abfd, psec,
65765700 9588 elf_section_data (sec)->sec_info,
753731ee 9589 sym->st_value + addend);
c629eae0
JJ		 9590}
9591
9592bfd_vma
217aa764 9593_bfd_elf_section_offset (bfd *abfd,
92e4ec35 9594 struct bfd_link_info *info,
217aa764
AM		 9595 asection *sec,
9596 bfd_vma offset)
c629eae0 9597{
68bfbfcc 9598 switch (sec->sec_info_type)
65765700 9599 {
dbaa2011 9600 case SEC_INFO_TYPE_STABS:
eea6121a
AM		 9601 return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info,
9602 offset);
dbaa2011 9603 case SEC_INFO_TYPE_EH_FRAME:
92e4ec35 9604 return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset);
65765700 9605 default:
310fd250
L		 9606 if ((sec->flags & SEC_ELF_REVERSE_COPY) != 0)
9607 {
9608 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
9609 bfd_size_type address_size = bed->s->arch_size / 8;
9610 offset = sec->size - offset - address_size;
9611 }
65765700
JJ		 9612 return offset;
9613 }
c629eae0 9614}
3333a7c3
RM		 9615\f
9616/* Create a new BFD as if by bfd_openr. Rather than opening a file,
9617 reconstruct an ELF file by reading the segments out of remote memory
9618 based on the ELF file header at EHDR_VMA and the ELF program headers it
9619 points to. If not null, *LOADBASEP is filled in with the difference
9620 between the VMAs from which the segments were read, and the VMAs the
9621 file headers (and hence BFD's idea of each section's VMA) put them at.
9622
9623 The function TARGET_READ_MEMORY is called to copy LEN bytes from the
9624 remote memory at target address VMA into the local buffer at MYADDR; it
9625 should return zero on success or an `errno' code on failure. TEMPL must
9626 be a BFD for an ELF target with the word size and byte order found in
9627 the remote memory. */
9628
9629bfd *
217aa764
AM		 9630bfd_elf_bfd_from_remote_memory
9631 (bfd *templ,
9632 bfd_vma ehdr_vma,
9633 bfd_vma *loadbasep,
fe78531d 9634 int (*target_read_memory) (bfd_vma, bfd_byte *, bfd_size_type))
3333a7c3
RM		 9635{
9636 return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory)
9637 (templ, ehdr_vma, loadbasep, target_read_memory);
9638}
4c45e5c9
JJ		 9639\f
9640long
c9727e01
AM		 9641_bfd_elf_get_synthetic_symtab (bfd *abfd,
9642 long symcount ATTRIBUTE_UNUSED,
9643 asymbol **syms ATTRIBUTE_UNUSED,
8615f3f2 9644 long dynsymcount,
c9727e01
AM		 9645 asymbol **dynsyms,
9646 asymbol **ret)
4c45e5c9
JJ		 9647{
9648 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
9649 asection *relplt;
9650 asymbol *s;
9651 const char *relplt_name;
9652 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
9653 arelent *p;
9654 long count, i, n;
9655 size_t size;
9656 Elf_Internal_Shdr *hdr;
9657 char *names;
9658 asection *plt;
9659
8615f3f2
AM		 9660 *ret = NULL;
9661
90e3cdf2
JJ		 9662 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
9663 return 0;
9664
8615f3f2
AM		 9665 if (dynsymcount <= 0)
9666 return 0;
9667
4c45e5c9
JJ		 9668 if (!bed->plt_sym_val)
9669 return 0;
9670
9671 relplt_name = bed->relplt_name;
9672 if (relplt_name == NULL)
d35fd659 9673 relplt_name = bed->rela_plts_and_copies_p ? ".rela.plt" : ".rel.plt";
4c45e5c9
JJ		 9674 relplt = bfd_get_section_by_name (abfd, relplt_name);
9675 if (relplt == NULL)
9676 return 0;
9677
9678 hdr = &elf_section_data (relplt)->this_hdr;
9679 if (hdr->sh_link != elf_dynsymtab (abfd)
9680 || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA))
9681 return 0;
9682
9683 plt = bfd_get_section_by_name (abfd, ".plt");
9684 if (plt == NULL)
9685 return 0;
9686
9687 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
c9727e01 9688 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
4c45e5c9
JJ		 9689 return -1;
9690
eea6121a 9691 count = relplt->size / hdr->sh_entsize;
4c45e5c9
JJ		 9692 size = count * sizeof (asymbol);
9693 p = relplt->relocation;
cb53bf42 9694 for (i = 0; i < count; i++, p += bed->s->int_rels_per_ext_rel)
041de40d
AM		 9695 {
9696 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
9697 if (p->addend != 0)
9698 {
9699#ifdef BFD64
9700 size += sizeof ("+0x") - 1 + 8 + 8 * (bed->s->elfclass == ELFCLASS64);
9701#else
9702 size += sizeof ("+0x") - 1 + 8;
9703#endif
9704 }
9705 }
4c45e5c9 9706
a50b1753 9707 s = *ret = (asymbol *) bfd_malloc (size);
4c45e5c9
JJ		 9708 if (s == NULL)
9709 return -1;
9710
9711 names = (char *) (s + count);
9712 p = relplt->relocation;
9713 n = 0;
cb53bf42 9714 for (i = 0; i < count; i++, p += bed->s->int_rels_per_ext_rel)
4c45e5c9
JJ		 9715 {
9716 size_t len;
9717 bfd_vma addr;
9718
9719 addr = bed->plt_sym_val (i, plt, p);
9720 if (addr == (bfd_vma) -1)
9721 continue;
9722
9723 *s = **p->sym_ptr_ptr;
65a7a66f
AM		 9724 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
9725 we are defining a symbol, ensure one of them is set. */
9726 if ((s->flags & BSF_LOCAL) == 0)
9727 s->flags |= BSF_GLOBAL;
6ba2a415 9728 s->flags |= BSF_SYNTHETIC;
4c45e5c9
JJ		 9729 s->section = plt;
9730 s->value = addr - plt->vma;
9731 s->name = names;
8f39ba8e 9732 s->udata.p = NULL;
4c45e5c9
JJ		 9733 len = strlen ((*p->sym_ptr_ptr)->name);
9734 memcpy (names, (*p->sym_ptr_ptr)->name, len);
9735 names += len;
041de40d
AM		 9736 if (p->addend != 0)
9737 {
1d770845 9738 char buf[30], *a;
d324f6d6 9739
041de40d
AM		 9740 memcpy (names, "+0x", sizeof ("+0x") - 1);
9741 names += sizeof ("+0x") - 1;
1d770845
L		 9742 bfd_sprintf_vma (abfd, buf, p->addend);
9743 for (a = buf; *a == '0'; ++a)
9744 ;
9745 len = strlen (a);
9746 memcpy (names, a, len);
9747 names += len;
041de40d 9748 }
4c45e5c9
JJ		 9749 memcpy (names, "@plt", sizeof ("@plt"));
9750 names += sizeof ("@plt");
8f39ba8e 9751 ++s, ++n;
4c45e5c9
JJ		 9752 }
9753
9754 return n;
9755}
3d7f7666 9756
3b22753a
L		 9757/* It is only used by x86-64 so far. */
9758asection _bfd_elf_large_com_section
9759 = BFD_FAKE_SECTION (_bfd_elf_large_com_section,
f592407e 9760 SEC_IS_COMMON, NULL, "LARGE_COMMON", 0);
ecca9871 9761
d1036acb
L		 9762void
9763_bfd_elf_set_osabi (bfd * abfd,
9764 struct bfd_link_info * link_info ATTRIBUTE_UNUSED)
9765{
9766 Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
9767
9768 i_ehdrp = elf_elfheader (abfd);
9769
9770 i_ehdrp->e_ident[EI_OSABI] = get_elf_backend_data (abfd)->elf_osabi;
d8045f23
NC		 9771
9772 /* To make things simpler for the loader on Linux systems we set the
9c55345c 9773 osabi field to ELFOSABI_GNU if the binary contains symbols of
f64b2e8d 9774 the STT_GNU_IFUNC type or STB_GNU_UNIQUE binding. */
d8045f23 9775 if (i_ehdrp->e_ident[EI_OSABI] == ELFOSABI_NONE
f64b2e8d 9776 && elf_tdata (abfd)->has_gnu_symbols)
9c55345c 9777 i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_GNU;
d1036acb 9778}
fcb93ecf
PB		 9779
9780
9781/* Return TRUE for ELF symbol types that represent functions.
9782 This is the default version of this function, which is sufficient for
d8045f23 9783 most targets. It returns true if TYPE is STT_FUNC or STT_GNU_IFUNC. */
fcb93ecf
PB		 9784
9785bfd_boolean
9786_bfd_elf_is_function_type (unsigned int type)
9787{
d8045f23
NC		 9788 return (type == STT_FUNC
9789 || type == STT_GNU_IFUNC);
fcb93ecf 9790}
9f296da3 9791
aef36ac1
AM		 9792/* If the ELF symbol SYM might be a function in SEC, return the
9793 function size and set *CODE_OFF to the function's entry point,
9794 otherwise return zero. */
9f296da3 9795
aef36ac1
AM		 9796bfd_size_type
9797_bfd_elf_maybe_function_sym (const asymbol *sym, asection *sec,
9798 bfd_vma *code_off)
9f296da3 9799{
aef36ac1
AM		 9800 bfd_size_type size;
9801
ff9e0f5b 9802 if ((sym->flags & (BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT
aef36ac1
AM		 9803 | BSF_THREAD_LOCAL | BSF_RELC | BSF_SRELC)) != 0
9804 || sym->section != sec)
9805 return 0;
ff9e0f5b 9806
ff9e0f5b 9807 *code_off = sym->value;
aef36ac1
AM		 9808 size = 0;
9809 if (!(sym->flags & BSF_SYNTHETIC))
9810 size = ((elf_symbol_type *) sym)->internal_elf_sym.st_size;
9811 if (size == 0)
9812 size = 1;
9813 return size;
9f296da3 9814}
GDB Binutils - Deliverables
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