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* hppa-hpux-tdep.c (child_enable_exception_callback): Use XMALLOC.
[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,
4 2002, 2003, 2004 Free Software Foundation, Inc.
252b5132 5
5e8d7549 6 This file is part of BFD, the Binary File Descriptor library.
252b5132 7
5e8d7549
NC		 8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
252b5132 12
5e8d7549
NC		 13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
252b5132 17
5e8d7549 18 You should have received a copy of the GNU General Public License
b34976b6 19 along with this program; if not, write to the Free Software
5e8d7549 20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
252b5132 21
661a3fd4 22/* SECTION
47d9a591 23
252b5132
RH		 24 ELF backends
25
26 BFD support for ELF formats is being worked on.
27 Currently, the best supported back ends are for sparc and i386
28 (running svr4 or Solaris 2).
29
30 Documentation of the internals of the support code still needs
31 to be written. The code is changing quickly enough that we
661a3fd4 32 haven't bothered yet. */
252b5132 33
7ee38065
MS		 34/* For sparc64-cross-sparc32. */
35#define _SYSCALL32
252b5132
RH		 36#include "bfd.h"
37#include "sysdep.h"
38#include "bfdlink.h"
39#include "libbfd.h"
40#define ARCH_SIZE 0
41#include "elf-bfd.h"
e0e8c97f 42#include "libiberty.h"
252b5132 43
217aa764 44static int elf_sort_sections (const void *, const void *);
c84fca4d 45static bfd_boolean assign_file_positions_except_relocs (bfd *, struct bfd_link_info *);
217aa764
AM		 46static bfd_boolean prep_headers (bfd *);
47static bfd_boolean swap_out_syms (bfd *, struct bfd_strtab_hash **, int) ;
48static bfd_boolean elfcore_read_notes (bfd *, file_ptr, bfd_size_type) ;
50b2bdb7 49
252b5132
RH		 50/* Swap version information in and out. The version information is
51 currently size independent. If that ever changes, this code will
52 need to move into elfcode.h. */
53
54/* Swap in a Verdef structure. */
55
56void
217aa764
AM		 57_bfd_elf_swap_verdef_in (bfd *abfd,
58 const Elf_External_Verdef *src,
59 Elf_Internal_Verdef *dst)
252b5132 60{
dc810e39
AM		 61 dst->vd_version = H_GET_16 (abfd, src->vd_version);
62 dst->vd_flags = H_GET_16 (abfd, src->vd_flags);
63 dst->vd_ndx = H_GET_16 (abfd, src->vd_ndx);
64 dst->vd_cnt = H_GET_16 (abfd, src->vd_cnt);
65 dst->vd_hash = H_GET_32 (abfd, src->vd_hash);
66 dst->vd_aux = H_GET_32 (abfd, src->vd_aux);
67 dst->vd_next = H_GET_32 (abfd, src->vd_next);
252b5132
RH		 68}
69
70/* Swap out a Verdef structure. */
71
72void
217aa764
AM		 73_bfd_elf_swap_verdef_out (bfd *abfd,
74 const Elf_Internal_Verdef *src,
75 Elf_External_Verdef *dst)
252b5132 76{
dc810e39
AM		 77 H_PUT_16 (abfd, src->vd_version, dst->vd_version);
78 H_PUT_16 (abfd, src->vd_flags, dst->vd_flags);
79 H_PUT_16 (abfd, src->vd_ndx, dst->vd_ndx);
80 H_PUT_16 (abfd, src->vd_cnt, dst->vd_cnt);
81 H_PUT_32 (abfd, src->vd_hash, dst->vd_hash);
82 H_PUT_32 (abfd, src->vd_aux, dst->vd_aux);
83 H_PUT_32 (abfd, src->vd_next, dst->vd_next);
252b5132
RH		 84}
85
86/* Swap in a Verdaux structure. */
87
88void
217aa764
AM		 89_bfd_elf_swap_verdaux_in (bfd *abfd,
90 const Elf_External_Verdaux *src,
91 Elf_Internal_Verdaux *dst)
252b5132 92{
dc810e39
AM		 93 dst->vda_name = H_GET_32 (abfd, src->vda_name);
94 dst->vda_next = H_GET_32 (abfd, src->vda_next);
252b5132
RH		 95}
96
97/* Swap out a Verdaux structure. */
98
99void
217aa764
AM		 100_bfd_elf_swap_verdaux_out (bfd *abfd,
101 const Elf_Internal_Verdaux *src,
102 Elf_External_Verdaux *dst)
252b5132 103{
dc810e39
AM		 104 H_PUT_32 (abfd, src->vda_name, dst->vda_name);
105 H_PUT_32 (abfd, src->vda_next, dst->vda_next);
252b5132
RH		 106}
107
108/* Swap in a Verneed structure. */
109
110void
217aa764
AM		 111_bfd_elf_swap_verneed_in (bfd *abfd,
112 const Elf_External_Verneed *src,
113 Elf_Internal_Verneed *dst)
252b5132 114{
dc810e39
AM		 115 dst->vn_version = H_GET_16 (abfd, src->vn_version);
116 dst->vn_cnt = H_GET_16 (abfd, src->vn_cnt);
117 dst->vn_file = H_GET_32 (abfd, src->vn_file);
118 dst->vn_aux = H_GET_32 (abfd, src->vn_aux);
119 dst->vn_next = H_GET_32 (abfd, src->vn_next);
252b5132
RH		 120}
121
122/* Swap out a Verneed structure. */
123
124void
217aa764
AM		 125_bfd_elf_swap_verneed_out (bfd *abfd,
126 const Elf_Internal_Verneed *src,
127 Elf_External_Verneed *dst)
252b5132 128{
dc810e39
AM		 129 H_PUT_16 (abfd, src->vn_version, dst->vn_version);
130 H_PUT_16 (abfd, src->vn_cnt, dst->vn_cnt);
131 H_PUT_32 (abfd, src->vn_file, dst->vn_file);
132 H_PUT_32 (abfd, src->vn_aux, dst->vn_aux);
133 H_PUT_32 (abfd, src->vn_next, dst->vn_next);
252b5132
RH		 134}
135
136/* Swap in a Vernaux structure. */
137
138void
217aa764
AM		 139_bfd_elf_swap_vernaux_in (bfd *abfd,
140 const Elf_External_Vernaux *src,
141 Elf_Internal_Vernaux *dst)
252b5132 142{
dc810e39
AM		 143 dst->vna_hash = H_GET_32 (abfd, src->vna_hash);
144 dst->vna_flags = H_GET_16 (abfd, src->vna_flags);
145 dst->vna_other = H_GET_16 (abfd, src->vna_other);
146 dst->vna_name = H_GET_32 (abfd, src->vna_name);
147 dst->vna_next = H_GET_32 (abfd, src->vna_next);
252b5132
RH		 148}
149
150/* Swap out a Vernaux structure. */
151
152void
217aa764
AM		 153_bfd_elf_swap_vernaux_out (bfd *abfd,
154 const Elf_Internal_Vernaux *src,
155 Elf_External_Vernaux *dst)
252b5132 156{
dc810e39
AM		 157 H_PUT_32 (abfd, src->vna_hash, dst->vna_hash);
158 H_PUT_16 (abfd, src->vna_flags, dst->vna_flags);
159 H_PUT_16 (abfd, src->vna_other, dst->vna_other);
160 H_PUT_32 (abfd, src->vna_name, dst->vna_name);
161 H_PUT_32 (abfd, src->vna_next, dst->vna_next);
252b5132
RH		 162}
163
164/* Swap in a Versym structure. */
165
166void
217aa764
AM		 167_bfd_elf_swap_versym_in (bfd *abfd,
168 const Elf_External_Versym *src,
169 Elf_Internal_Versym *dst)
252b5132 170{
dc810e39 171 dst->vs_vers = H_GET_16 (abfd, src->vs_vers);
252b5132
RH		 172}
173
174/* Swap out a Versym structure. */
175
176void
217aa764
AM		 177_bfd_elf_swap_versym_out (bfd *abfd,
178 const Elf_Internal_Versym *src,
179 Elf_External_Versym *dst)
252b5132 180{
dc810e39 181 H_PUT_16 (abfd, src->vs_vers, dst->vs_vers);
252b5132
RH		 182}
183
184/* Standard ELF hash function. Do not change this function; you will
185 cause invalid hash tables to be generated. */
3a99b017 186
252b5132 187unsigned long
217aa764 188bfd_elf_hash (const char *namearg)
252b5132 189{
3a99b017 190 const unsigned char *name = (const unsigned char *) namearg;
252b5132
RH		 191 unsigned long h = 0;
192 unsigned long g;
193 int ch;
194
195 while ((ch = *name++) != '\0')
196 {
197 h = (h << 4) + ch;
198 if ((g = (h & 0xf0000000)) != 0)
199 {
200 h ^= g >> 24;
201 /* The ELF ABI says `h &= ~g', but this is equivalent in
202 this case and on some machines one insn instead of two. */
203 h ^= g;
204 }
205 }
32dfa85d 206 return h & 0xffffffff;
252b5132
RH		 207}
208
209/* Read a specified number of bytes at a specified offset in an ELF
210 file, into a newly allocated buffer, and return a pointer to the
c044fabd 211 buffer. */
252b5132
RH		 212
213static char *
217aa764 214elf_read (bfd *abfd, file_ptr offset, bfd_size_type size)
252b5132
RH		 215{
216 char *buf;
217
218 if ((buf = bfd_alloc (abfd, size)) == NULL)
219 return NULL;
dc810e39 220 if (bfd_seek (abfd, offset, SEEK_SET) != 0)
252b5132 221 return NULL;
217aa764 222 if (bfd_bread (buf, size, abfd) != size)
252b5132
RH		 223 {
224 if (bfd_get_error () != bfd_error_system_call)
225 bfd_set_error (bfd_error_file_truncated);
226 return NULL;
227 }
228 return buf;
229}
230
b34976b6 231bfd_boolean
217aa764 232bfd_elf_mkobject (bfd *abfd)
252b5132 233{
c044fabd
KH		 234 /* This just does initialization. */
235 /* coff_mkobject zalloc's space for tdata.coff_obj_data ... */
217aa764 236 elf_tdata (abfd) = bfd_zalloc (abfd, sizeof (struct elf_obj_tdata));
252b5132 237 if (elf_tdata (abfd) == 0)
b34976b6 238 return FALSE;
c044fabd
KH		 239 /* Since everything is done at close time, do we need any
240 initialization? */
252b5132 241
b34976b6 242 return TRUE;
252b5132
RH		 243}
244
b34976b6 245bfd_boolean
217aa764 246bfd_elf_mkcorefile (bfd *abfd)
252b5132 247{
c044fabd 248 /* I think this can be done just like an object file. */
252b5132
RH		 249 return bfd_elf_mkobject (abfd);
250}
251
252char *
217aa764 253bfd_elf_get_str_section (bfd *abfd, unsigned int shindex)
252b5132
RH		 254{
255 Elf_Internal_Shdr **i_shdrp;
256 char *shstrtab = NULL;
dc810e39
AM		 257 file_ptr offset;
258 bfd_size_type shstrtabsize;
252b5132
RH		 259
260 i_shdrp = elf_elfsections (abfd);
261 if (i_shdrp == 0 || i_shdrp[shindex] == 0)
262 return 0;
263
264 shstrtab = (char *) i_shdrp[shindex]->contents;
265 if (shstrtab == NULL)
266 {
c044fabd 267 /* No cached one, attempt to read, and cache what we read. */
252b5132
RH		 268 offset = i_shdrp[shindex]->sh_offset;
269 shstrtabsize = i_shdrp[shindex]->sh_size;
270 shstrtab = elf_read (abfd, offset, shstrtabsize);
217aa764 271 i_shdrp[shindex]->contents = shstrtab;
252b5132
RH		 272 }
273 return shstrtab;
274}
275
276char *
217aa764
AM		 277bfd_elf_string_from_elf_section (bfd *abfd,
278 unsigned int shindex,
279 unsigned int strindex)
252b5132
RH		 280{
281 Elf_Internal_Shdr *hdr;
282
283 if (strindex == 0)
284 return "";
285
286 hdr = elf_elfsections (abfd)[shindex];
287
288 if (hdr->contents == NULL
289 && bfd_elf_get_str_section (abfd, shindex) == NULL)
290 return NULL;
291
292 if (strindex >= hdr->sh_size)
293 {
294 (*_bfd_error_handler)
d003868e
AM		 295 (_("%B: invalid string offset %u >= %lu for section `%s'"),
296 abfd, strindex, (unsigned long) hdr->sh_size,
252b5132
RH		 297 ((shindex == elf_elfheader(abfd)->e_shstrndx
298 && strindex == hdr->sh_name)
299 ? ".shstrtab"
300 : elf_string_from_elf_strtab (abfd, hdr->sh_name)));
301 return "";
302 }
303
304 return ((char *) hdr->contents) + strindex;
305}
306
6cdc0ccc
AM		 307/* Read and convert symbols to internal format.
308 SYMCOUNT specifies the number of symbols to read, starting from
309 symbol SYMOFFSET. If any of INTSYM_BUF, EXTSYM_BUF or EXTSHNDX_BUF
310 are non-NULL, they are used to store the internal symbols, external
311 symbols, and symbol section index extensions, respectively. */
312
313Elf_Internal_Sym *
217aa764
AM		 314bfd_elf_get_elf_syms (bfd *ibfd,
315 Elf_Internal_Shdr *symtab_hdr,
316 size_t symcount,
317 size_t symoffset,
318 Elf_Internal_Sym *intsym_buf,
319 void *extsym_buf,
320 Elf_External_Sym_Shndx *extshndx_buf)
6cdc0ccc
AM		 321{
322 Elf_Internal_Shdr *shndx_hdr;
217aa764 323 void *alloc_ext;
df622259 324 const bfd_byte *esym;
6cdc0ccc
AM		 325 Elf_External_Sym_Shndx *alloc_extshndx;
326 Elf_External_Sym_Shndx *shndx;
327 Elf_Internal_Sym *isym;
328 Elf_Internal_Sym *isymend;
9c5bfbb7 329 const struct elf_backend_data *bed;
6cdc0ccc
AM		 330 size_t extsym_size;
331 bfd_size_type amt;
332 file_ptr pos;
333
334 if (symcount == 0)
335 return intsym_buf;
336
337 /* Normal syms might have section extension entries. */
338 shndx_hdr = NULL;
339 if (symtab_hdr == &elf_tdata (ibfd)->symtab_hdr)
340 shndx_hdr = &elf_tdata (ibfd)->symtab_shndx_hdr;
341
342 /* Read the symbols. */
343 alloc_ext = NULL;
344 alloc_extshndx = NULL;
345 bed = get_elf_backend_data (ibfd);
346 extsym_size = bed->s->sizeof_sym;
347 amt = symcount * extsym_size;
348 pos = symtab_hdr->sh_offset + symoffset * extsym_size;
349 if (extsym_buf == NULL)
350 {
351 alloc_ext = bfd_malloc (amt);
352 extsym_buf = alloc_ext;
353 }
354 if (extsym_buf == NULL
355 || bfd_seek (ibfd, pos, SEEK_SET) != 0
356 || bfd_bread (extsym_buf, amt, ibfd) != amt)
357 {
358 intsym_buf = NULL;
359 goto out;
360 }
361
362 if (shndx_hdr == NULL || shndx_hdr->sh_size == 0)
363 extshndx_buf = NULL;
364 else
365 {
366 amt = symcount * sizeof (Elf_External_Sym_Shndx);
367 pos = shndx_hdr->sh_offset + symoffset * sizeof (Elf_External_Sym_Shndx);
368 if (extshndx_buf == NULL)
369 {
217aa764 370 alloc_extshndx = bfd_malloc (amt);
6cdc0ccc
AM		 371 extshndx_buf = alloc_extshndx;
372 }
373 if (extshndx_buf == NULL
374 || bfd_seek (ibfd, pos, SEEK_SET) != 0
375 || bfd_bread (extshndx_buf, amt, ibfd) != amt)
376 {
377 intsym_buf = NULL;
378 goto out;
379 }
380 }
381
382 if (intsym_buf == NULL)
383 {
384 bfd_size_type amt = symcount * sizeof (Elf_Internal_Sym);
217aa764 385 intsym_buf = bfd_malloc (amt);
6cdc0ccc
AM		 386 if (intsym_buf == NULL)
387 goto out;
388 }
389
390 /* Convert the symbols to internal form. */
391 isymend = intsym_buf + symcount;
392 for (esym = extsym_buf, isym = intsym_buf, shndx = extshndx_buf;
393 isym < isymend;
394 esym += extsym_size, isym++, shndx = shndx != NULL ? shndx + 1 : NULL)
217aa764 395 (*bed->s->swap_symbol_in) (ibfd, esym, shndx, isym);
6cdc0ccc
AM		 396
397 out:
398 if (alloc_ext != NULL)
399 free (alloc_ext);
400 if (alloc_extshndx != NULL)
401 free (alloc_extshndx);
402
403 return intsym_buf;
404}
405
5cab59f6
AM		 406/* Look up a symbol name. */
407const char *
217aa764 408bfd_elf_local_sym_name (bfd *abfd, Elf_Internal_Sym *isym)
5cab59f6
AM		 409{
410 unsigned int iname = isym->st_name;
411 unsigned int shindex = elf_tdata (abfd)->symtab_hdr.sh_link;
412 if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION)
413 {
414 iname = elf_elfsections (abfd)[isym->st_shndx]->sh_name;
415 shindex = elf_elfheader (abfd)->e_shstrndx;
416 }
417
418 return bfd_elf_string_from_elf_section (abfd, shindex, iname);
419}
420
dbb410c3
AM		 421/* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP
422 sections. The first element is the flags, the rest are section
423 pointers. */
424
425typedef union elf_internal_group {
426 Elf_Internal_Shdr *shdr;
427 unsigned int flags;
428} Elf_Internal_Group;
429
b885599b
AM		 430/* Return the name of the group signature symbol. Why isn't the
431 signature just a string? */
432
433static const char *
217aa764 434group_signature (bfd *abfd, Elf_Internal_Shdr *ghdr)
b885599b 435{
9dce4196 436 Elf_Internal_Shdr *hdr;
9dce4196
AM		 437 unsigned char esym[sizeof (Elf64_External_Sym)];
438 Elf_External_Sym_Shndx eshndx;
439 Elf_Internal_Sym isym;
b885599b
AM		 440
441 /* First we need to ensure the symbol table is available. */
442 if (! bfd_section_from_shdr (abfd, ghdr->sh_link))
443 return NULL;
444
9dce4196
AM		 445 /* Go read the symbol. */
446 hdr = &elf_tdata (abfd)->symtab_hdr;
6cdc0ccc
AM		 447 if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info,
448 &isym, esym, &eshndx) == NULL)
b885599b 449 return NULL;
9dce4196 450
5cab59f6 451 return bfd_elf_local_sym_name (abfd, &isym);
b885599b
AM		 452}
453
dbb410c3
AM		 454/* Set next_in_group list pointer, and group name for NEWSECT. */
455
b34976b6 456static bfd_boolean
217aa764 457setup_group (bfd *abfd, Elf_Internal_Shdr *hdr, asection *newsect)
dbb410c3
AM		 458{
459 unsigned int num_group = elf_tdata (abfd)->num_group;
460
461 /* If num_group is zero, read in all SHT_GROUP sections. The count
462 is set to -1 if there are no SHT_GROUP sections. */
463 if (num_group == 0)
464 {
465 unsigned int i, shnum;
466
467 /* First count the number of groups. If we have a SHT_GROUP
468 section with just a flag word (ie. sh_size is 4), ignore it. */
9ad5cbcf 469 shnum = elf_numsections (abfd);
dbb410c3
AM		 470 num_group = 0;
471 for (i = 0; i < shnum; i++)
472 {
473 Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i];
474 if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8)
475 num_group += 1;
476 }
477
478 if (num_group == 0)
973ffd63 479 num_group = (unsigned) -1;
dbb410c3
AM		 480 elf_tdata (abfd)->num_group = num_group;
481
482 if (num_group > 0)
483 {
484 /* We keep a list of elf section headers for group sections,
485 so we can find them quickly. */
486 bfd_size_type amt = num_group * sizeof (Elf_Internal_Shdr *);
487 elf_tdata (abfd)->group_sect_ptr = bfd_alloc (abfd, amt);
488 if (elf_tdata (abfd)->group_sect_ptr == NULL)
b34976b6 489 return FALSE;
dbb410c3
AM		 490
491 num_group = 0;
492 for (i = 0; i < shnum; i++)
493 {
494 Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i];
495 if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8)
496 {
973ffd63 497 unsigned char *src;
dbb410c3
AM		 498 Elf_Internal_Group *dest;
499
500 /* Add to list of sections. */
501 elf_tdata (abfd)->group_sect_ptr[num_group] = shdr;
502 num_group += 1;
503
504 /* Read the raw contents. */
505 BFD_ASSERT (sizeof (*dest) >= 4);
506 amt = shdr->sh_size * sizeof (*dest) / 4;
507 shdr->contents = bfd_alloc (abfd, amt);
508 if (shdr->contents == NULL
509 || bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0
510 || (bfd_bread (shdr->contents, shdr->sh_size, abfd)
511 != shdr->sh_size))
b34976b6 512 return FALSE;
dbb410c3
AM		 513
514 /* Translate raw contents, a flag word followed by an
515 array of elf section indices all in target byte order,
516 to the flag word followed by an array of elf section
517 pointers. */
518 src = shdr->contents + shdr->sh_size;
519 dest = (Elf_Internal_Group *) (shdr->contents + amt);
520 while (1)
521 {
522 unsigned int idx;
523
524 src -= 4;
525 --dest;
526 idx = H_GET_32 (abfd, src);
527 if (src == shdr->contents)
528 {
529 dest->flags = idx;
b885599b
AM		 530 if (shdr->bfd_section != NULL && (idx & GRP_COMDAT))
531 shdr->bfd_section->flags
532 |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
dbb410c3
AM		 533 break;
534 }
535 if (idx >= shnum)
536 {
537 ((*_bfd_error_handler)
d003868e 538 (_("%B: invalid SHT_GROUP entry"), abfd));
dbb410c3
AM		 539 idx = 0;
540 }
541 dest->shdr = elf_elfsections (abfd)[idx];
542 }
543 }
544 }
545 }
546 }
547
548 if (num_group != (unsigned) -1)
549 {
550 unsigned int i;
551
552 for (i = 0; i < num_group; i++)
553 {
554 Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i];
555 Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents;
556 unsigned int n_elt = shdr->sh_size / 4;
557
558 /* Look through this group's sections to see if current
559 section is a member. */
560 while (--n_elt != 0)
561 if ((++idx)->shdr == hdr)
562 {
e0e8c97f 563 asection *s = NULL;
dbb410c3
AM		 564
565 /* We are a member of this group. Go looking through
566 other members to see if any others are linked via
567 next_in_group. */
568 idx = (Elf_Internal_Group *) shdr->contents;
569 n_elt = shdr->sh_size / 4;
570 while (--n_elt != 0)
571 if ((s = (++idx)->shdr->bfd_section) != NULL
945906ff 572 && elf_next_in_group (s) != NULL)
dbb410c3
AM		 573 break;
574 if (n_elt != 0)
575 {
dbb410c3
AM		 576 /* Snarf the group name from other member, and
577 insert current section in circular list. */
945906ff
AM		 578 elf_group_name (newsect) = elf_group_name (s);
579 elf_next_in_group (newsect) = elf_next_in_group (s);
580 elf_next_in_group (s) = newsect;
dbb410c3
AM		 581 }
582 else
583 {
dbb410c3
AM		 584 const char *gname;
585
b885599b
AM		 586 gname = group_signature (abfd, shdr);
587 if (gname == NULL)
b34976b6 588 return FALSE;
945906ff 589 elf_group_name (newsect) = gname;
dbb410c3
AM		 590
591 /* Start a circular list with one element. */
945906ff 592 elf_next_in_group (newsect) = newsect;
dbb410c3 593 }
b885599b 594
9dce4196
AM		 595 /* If the group section has been created, point to the
596 new member. */
dbb410c3 597 if (shdr->bfd_section != NULL)
945906ff 598 elf_next_in_group (shdr->bfd_section) = newsect;
b885599b 599
dbb410c3
AM		 600 i = num_group - 1;
601 break;
602 }
603 }
604 }
605
945906ff 606 if (elf_group_name (newsect) == NULL)
dbb410c3 607 {
d003868e
AM		 608 (*_bfd_error_handler) (_("%B: no group info for section %A"),
609 abfd, newsect);
dbb410c3 610 }
b34976b6 611 return TRUE;
dbb410c3
AM		 612}
613
3d7f7666
L		 614bfd_boolean
615_bfd_elf_setup_group_pointers (bfd *abfd)
616{
617 unsigned int i;
618 unsigned int num_group = elf_tdata (abfd)->num_group;
619 bfd_boolean result = TRUE;
620
621 if (num_group == (unsigned) -1)
622 return result;
623
624 for (i = 0; i < num_group; i++)
625 {
626 Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i];
627 Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents;
628 unsigned int n_elt = shdr->sh_size / 4;
629
630 while (--n_elt != 0)
631 if ((++idx)->shdr->bfd_section)
632 elf_sec_group (idx->shdr->bfd_section) = shdr->bfd_section;
633 else if (idx->shdr->sh_type == SHT_RELA
634 || idx->shdr->sh_type == SHT_REL)
635 /* We won't include relocation sections in section groups in
636 output object files. We adjust the group section size here
637 so that relocatable link will work correctly when
638 relocation sections are in section group in input object
639 files. */
640 shdr->bfd_section->size -= 4;
641 else
642 {
643 /* There are some unknown sections in the group. */
644 (*_bfd_error_handler)
d003868e
AM		 645 (_("%B: unknown [%d] section `%s' in group [%s]"),
646 abfd,
3d7f7666
L		 647 (unsigned int) idx->shdr->sh_type,
648 elf_string_from_elf_strtab (abfd, idx->shdr->sh_name),
649 shdr->bfd_section->name);
650 result = FALSE;
651 }
652 }
653 return result;
654}
655
72adc230
AM		 656bfd_boolean
657bfd_elf_is_group_section (bfd *abfd ATTRIBUTE_UNUSED, const asection *sec)
658{
659 return elf_next_in_group (sec) != NULL;
660}
661
b34976b6 662bfd_boolean
3d7f7666
L		 663bfd_elf_discard_group (bfd *abfd ATTRIBUTE_UNUSED,
664 asection *group ATTRIBUTE_UNUSED)
b885599b 665{
3d7f7666 666#if 0
b885599b
AM		 667 asection *first = elf_next_in_group (group);
668 asection *s = first;
669
670 while (s != NULL)
671 {
672 s->output_section = bfd_abs_section_ptr;
673 s = elf_next_in_group (s);
674 /* These lists are circular. */
675 if (s == first)
676 break;
677 }
3d7f7666
L		 678#else
679 /* FIXME: Never used. Remove it! */
680 abort ();
681#endif
b34976b6 682 return TRUE;
b885599b
AM		 683}
684
252b5132
RH		 685/* Make a BFD section from an ELF section. We store a pointer to the
686 BFD section in the bfd_section field of the header. */
687
b34976b6 688bfd_boolean
217aa764
AM		 689_bfd_elf_make_section_from_shdr (bfd *abfd,
690 Elf_Internal_Shdr *hdr,
691 const char *name)
252b5132
RH		 692{
693 asection *newsect;
694 flagword flags;
9c5bfbb7 695 const struct elf_backend_data *bed;
252b5132
RH		 696
697 if (hdr->bfd_section != NULL)
698 {
699 BFD_ASSERT (strcmp (name,
700 bfd_get_section_name (abfd, hdr->bfd_section)) == 0);
b34976b6 701 return TRUE;
252b5132
RH		 702 }
703
704 newsect = bfd_make_section_anyway (abfd, name);
705 if (newsect == NULL)
b34976b6 706 return FALSE;
252b5132 707
1829f4b2
AM		 708 hdr->bfd_section = newsect;
709 elf_section_data (newsect)->this_hdr = *hdr;
710
2f89ff8d
L		 711 /* Always use the real type/flags. */
712 elf_section_type (newsect) = hdr->sh_type;
713 elf_section_flags (newsect) = hdr->sh_flags;
714
252b5132
RH		 715 newsect->filepos = hdr->sh_offset;
716
717 if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr)
718 || ! bfd_set_section_size (abfd, newsect, hdr->sh_size)
719 || ! bfd_set_section_alignment (abfd, newsect,
dc810e39 720 bfd_log2 ((bfd_vma) hdr->sh_addralign)))
b34976b6 721 return FALSE;
252b5132
RH		 722
723 flags = SEC_NO_FLAGS;
724 if (hdr->sh_type != SHT_NOBITS)
725 flags |= SEC_HAS_CONTENTS;
dbb410c3 726 if (hdr->sh_type == SHT_GROUP)
b3096250 727 flags |= SEC_GROUP | SEC_EXCLUDE;
252b5132
RH		 728 if ((hdr->sh_flags & SHF_ALLOC) != 0)
729 {
730 flags |= SEC_ALLOC;
731 if (hdr->sh_type != SHT_NOBITS)
732 flags |= SEC_LOAD;
733 }
734 if ((hdr->sh_flags & SHF_WRITE) == 0)
735 flags |= SEC_READONLY;
736 if ((hdr->sh_flags & SHF_EXECINSTR) != 0)
737 flags |= SEC_CODE;
738 else if ((flags & SEC_LOAD) != 0)
739 flags |= SEC_DATA;
f5fa8ca2
JJ		 740 if ((hdr->sh_flags & SHF_MERGE) != 0)
741 {
742 flags |= SEC_MERGE;
743 newsect->entsize = hdr->sh_entsize;
744 if ((hdr->sh_flags & SHF_STRINGS) != 0)
745 flags |= SEC_STRINGS;
746 }
dbb410c3
AM		 747 if (hdr->sh_flags & SHF_GROUP)
748 if (!setup_group (abfd, hdr, newsect))
b34976b6 749 return FALSE;
13ae64f3
JJ		 750 if ((hdr->sh_flags & SHF_TLS) != 0)
751 flags |= SEC_THREAD_LOCAL;
252b5132
RH		 752
753 /* The debugging sections appear to be recognized only by name, not
754 any sort of flag. */
7a6cc5fb 755 {
dbf48117 756 static const char *debug_sec_names [] =
7a6cc5fb
NC		 757 {
758 ".debug",
759 ".gnu.linkonce.wi.",
760 ".line",
761 ".stab"
762 };
763 int i;
764
e0e8c97f 765 for (i = ARRAY_SIZE (debug_sec_names); i--;)
7a6cc5fb
NC		 766 if (strncmp (name, debug_sec_names[i], strlen (debug_sec_names[i])) == 0)
767 break;
768
769 if (i >= 0)
770 flags |= SEC_DEBUGGING;
771 }
252b5132
RH		 772
773 /* As a GNU extension, if the name begins with .gnu.linkonce, we
774 only link a single copy of the section. This is used to support
775 g++. g++ will emit each template expansion in its own section.
776 The symbols will be defined as weak, so that multiple definitions
777 are permitted. The GNU linker extension is to actually discard
778 all but one of the sections. */
b885599b
AM		 779 if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0
780 && elf_next_in_group (newsect) == NULL)
252b5132
RH		 781 flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
782
fa152c49
JW		 783 bed = get_elf_backend_data (abfd);
784 if (bed->elf_backend_section_flags)
785 if (! bed->elf_backend_section_flags (&flags, hdr))
b34976b6 786 return FALSE;
fa152c49 787
252b5132 788 if (! bfd_set_section_flags (abfd, newsect, flags))
b34976b6 789 return FALSE;
252b5132
RH		 790
791 if ((flags & SEC_ALLOC) != 0)
792 {
793 Elf_Internal_Phdr *phdr;
794 unsigned int i;
795
796 /* Look through the phdrs to see if we need to adjust the lma.
797 If all the p_paddr fields are zero, we ignore them, since
798 some ELF linkers produce such output. */
799 phdr = elf_tdata (abfd)->phdr;
800 for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++)
801 {
802 if (phdr->p_paddr != 0)
803 break;
804 }
805 if (i < elf_elfheader (abfd)->e_phnum)
806 {
807 phdr = elf_tdata (abfd)->phdr;
808 for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++)
809 {
e0e8c97f
NC		 810 /* This section is part of this segment if its file
811 offset plus size lies within the segment's memory
812 span and, if the section is loaded, the extent of the
47d9a591 813 loaded data lies within the extent of the segment.
bf36db18
NC		 814
815 Note - we used to check the p_paddr field as well, and
816 refuse to set the LMA if it was 0. This is wrong
dba143ef 817 though, as a perfectly valid initialised segment can
bf36db18 818 have a p_paddr of zero. Some architectures, eg ARM,
dba143ef 819 place special significance on the address 0 and
bf36db18
NC		 820 executables need to be able to have a segment which
821 covers this address. */
252b5132 822 if (phdr->p_type == PT_LOAD
e0e8c97f
NC		 823 && (bfd_vma) hdr->sh_offset >= phdr->p_offset
824 && (hdr->sh_offset + hdr->sh_size
825 <= phdr->p_offset + phdr->p_memsz)
252b5132 826 && ((flags & SEC_LOAD) == 0
d7866f04
AM		 827 || (hdr->sh_offset + hdr->sh_size
828 <= phdr->p_offset + phdr->p_filesz)))
252b5132 829 {
dba143ef 830 if ((flags & SEC_LOAD) == 0)
d7866f04
AM		 831 newsect->lma = (phdr->p_paddr
832 + hdr->sh_addr - phdr->p_vaddr);
dba143ef
AM		 833 else
834 /* We used to use the same adjustment for SEC_LOAD
835 sections, but that doesn't work if the segment
836 is packed with code from multiple VMAs.
837 Instead we calculate the section LMA based on
838 the segment LMA. It is assumed that the
839 segment will contain sections with contiguous
840 LMAs, even if the VMAs are not. */
841 newsect->lma = (phdr->p_paddr
842 + hdr->sh_offset - phdr->p_offset);
d7866f04
AM		 843
844 /* With contiguous segments, we can't tell from file
845 offsets whether a section with zero size should
846 be placed at the end of one segment or the
847 beginning of the next. Decide based on vaddr. */
848 if (hdr->sh_addr >= phdr->p_vaddr
849 && (hdr->sh_addr + hdr->sh_size
850 <= phdr->p_vaddr + phdr->p_memsz))
851 break;
252b5132
RH		 852 }
853 }
854 }
855 }
856
b34976b6 857 return TRUE;
252b5132
RH		 858}
859
860/*
861INTERNAL_FUNCTION
862 bfd_elf_find_section
863
864SYNOPSIS
865 struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name);
866
867DESCRIPTION
868 Helper functions for GDB to locate the string tables.
869 Since BFD hides string tables from callers, GDB needs to use an
870 internal hook to find them. Sun's .stabstr, in particular,
871 isn't even pointed to by the .stab section, so ordinary
872 mechanisms wouldn't work to find it, even if we had some.
873*/
874
875struct elf_internal_shdr *
217aa764 876bfd_elf_find_section (bfd *abfd, char *name)
252b5132
RH		 877{
878 Elf_Internal_Shdr **i_shdrp;
879 char *shstrtab;
880 unsigned int max;
881 unsigned int i;
882
883 i_shdrp = elf_elfsections (abfd);
884 if (i_shdrp != NULL)
885 {
9ad5cbcf
AM		 886 shstrtab = bfd_elf_get_str_section (abfd,
887 elf_elfheader (abfd)->e_shstrndx);
252b5132
RH		 888 if (shstrtab != NULL)
889 {
9ad5cbcf 890 max = elf_numsections (abfd);
252b5132
RH		 891 for (i = 1; i < max; i++)
892 if (!strcmp (&shstrtab[i_shdrp[i]->sh_name], name))
893 return i_shdrp[i];
894 }
895 }
896 return 0;
897}
898
899const char *const bfd_elf_section_type_names[] = {
900 "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB",
901 "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE",
902 "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM",
903};
904
1049f94e 905/* ELF relocs are against symbols. If we are producing relocatable
252b5132
RH		 906 output, and the reloc is against an external symbol, and nothing
907 has given us any additional addend, the resulting reloc will also
908 be against the same symbol. In such a case, we don't want to
909 change anything about the way the reloc is handled, since it will
910 all be done at final link time. Rather than put special case code
911 into bfd_perform_relocation, all the reloc types use this howto
912 function. It just short circuits the reloc if producing
1049f94e 913 relocatable output against an external symbol. */
252b5132 914
252b5132 915bfd_reloc_status_type
217aa764
AM		 916bfd_elf_generic_reloc (bfd *abfd ATTRIBUTE_UNUSED,
917 arelent *reloc_entry,
918 asymbol *symbol,
919 void *data ATTRIBUTE_UNUSED,
920 asection *input_section,
921 bfd *output_bfd,
922 char **error_message ATTRIBUTE_UNUSED)
923{
924 if (output_bfd != NULL
252b5132
RH		 925 && (symbol->flags & BSF_SECTION_SYM) == 0
926 && (! reloc_entry->howto->partial_inplace
927 || reloc_entry->addend == 0))
928 {
929 reloc_entry->address += input_section->output_offset;
930 return bfd_reloc_ok;
931 }
932
933 return bfd_reloc_continue;
934}
935\f
d3c456e9
JJ		 936/* Make sure sec_info_type is cleared if sec_info is cleared too. */
937
938static void
217aa764
AM		 939merge_sections_remove_hook (bfd *abfd ATTRIBUTE_UNUSED,
940 asection *sec)
d3c456e9 941{
68bfbfcc
AM		 942 BFD_ASSERT (sec->sec_info_type == ELF_INFO_TYPE_MERGE);
943 sec->sec_info_type = ELF_INFO_TYPE_NONE;
d3c456e9
JJ		 944}
945
8550eb6e
JJ		 946/* Finish SHF_MERGE section merging. */
947
b34976b6 948bfd_boolean
217aa764 949_bfd_elf_merge_sections (bfd *abfd, struct bfd_link_info *info)
8550eb6e 950{
57ceae94
AM		 951 bfd *ibfd;
952 asection *sec;
953
0eddce27 954 if (!is_elf_hash_table (info->hash))
b34976b6 955 return FALSE;
57ceae94
AM		 956
957 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
958 if ((ibfd->flags & DYNAMIC) == 0)
959 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
960 if ((sec->flags & SEC_MERGE) != 0
961 && !bfd_is_abs_section (sec->output_section))
962 {
963 struct bfd_elf_section_data *secdata;
964
965 secdata = elf_section_data (sec);
966 if (! _bfd_add_merge_section (abfd,
967 &elf_hash_table (info)->merge_info,
968 sec, &secdata->sec_info))
969 return FALSE;
970 else if (secdata->sec_info)
971 sec->sec_info_type = ELF_INFO_TYPE_MERGE;
972 }
973
974 if (elf_hash_table (info)->merge_info != NULL)
975 _bfd_merge_sections (abfd, info, elf_hash_table (info)->merge_info,
d3c456e9 976 merge_sections_remove_hook);
b34976b6 977 return TRUE;
8550eb6e 978}
2d653fc7
AM		 979
980void
217aa764 981_bfd_elf_link_just_syms (asection *sec, struct bfd_link_info *info)
2d653fc7
AM		 982{
983 sec->output_section = bfd_abs_section_ptr;
984 sec->output_offset = sec->vma;
0eddce27 985 if (!is_elf_hash_table (info->hash))
2d653fc7
AM		 986 return;
987
68bfbfcc 988 sec->sec_info_type = ELF_INFO_TYPE_JUST_SYMS;
2d653fc7 989}
8550eb6e 990\f
0ac4564e
L		 991/* Copy the program header and other data from one object module to
992 another. */
252b5132 993
b34976b6 994bfd_boolean
217aa764 995_bfd_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
2d502050
L		 996{
997 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
998 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 999 return TRUE;
2d502050
L		 1000
1001 BFD_ASSERT (!elf_flags_init (obfd)
1002 || (elf_elfheader (obfd)->e_flags
1003 == elf_elfheader (ibfd)->e_flags));
1004
0ac4564e 1005 elf_gp (obfd) = elf_gp (ibfd);
2d502050 1006 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
b34976b6
AM		 1007 elf_flags_init (obfd) = TRUE;
1008 return TRUE;
2d502050
L		 1009}
1010
f0b79d91
L		 1011/* Print out the program headers. */
1012
b34976b6 1013bfd_boolean
217aa764 1014_bfd_elf_print_private_bfd_data (bfd *abfd, void *farg)
252b5132 1015{
217aa764 1016 FILE *f = farg;
252b5132
RH		 1017 Elf_Internal_Phdr *p;
1018 asection *s;
1019 bfd_byte *dynbuf = NULL;
1020
1021 p = elf_tdata (abfd)->phdr;
1022 if (p != NULL)
1023 {
1024 unsigned int i, c;
1025
1026 fprintf (f, _("\nProgram Header:\n"));
1027 c = elf_elfheader (abfd)->e_phnum;
1028 for (i = 0; i < c; i++, p++)
1029 {
dc810e39 1030 const char *pt;
252b5132
RH		 1031 char buf[20];
1032
1033 switch (p->p_type)
1034 {
dc810e39
AM		 1035 case PT_NULL: pt = "NULL"; break;
1036 case PT_LOAD: pt = "LOAD"; break;
1037 case PT_DYNAMIC: pt = "DYNAMIC"; break;
1038 case PT_INTERP: pt = "INTERP"; break;
1039 case PT_NOTE: pt = "NOTE"; break;
1040 case PT_SHLIB: pt = "SHLIB"; break;
1041 case PT_PHDR: pt = "PHDR"; break;
13ae64f3 1042 case PT_TLS: pt = "TLS"; break;
65765700 1043 case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break;
9ee5e499 1044 case PT_GNU_STACK: pt = "STACK"; break;
8c37241b 1045 case PT_GNU_RELRO: pt = "RELRO"; break;
dc810e39 1046 default: sprintf (buf, "0x%lx", p->p_type); pt = buf; break;
252b5132 1047 }
dc810e39 1048 fprintf (f, "%8s off 0x", pt);
60b89a18 1049 bfd_fprintf_vma (abfd, f, p->p_offset);
252b5132 1050 fprintf (f, " vaddr 0x");
60b89a18 1051 bfd_fprintf_vma (abfd, f, p->p_vaddr);
252b5132 1052 fprintf (f, " paddr 0x");
60b89a18 1053 bfd_fprintf_vma (abfd, f, p->p_paddr);
252b5132
RH		 1054 fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align));
1055 fprintf (f, " filesz 0x");
60b89a18 1056 bfd_fprintf_vma (abfd, f, p->p_filesz);
252b5132 1057 fprintf (f, " memsz 0x");
60b89a18 1058 bfd_fprintf_vma (abfd, f, p->p_memsz);
252b5132
RH		 1059 fprintf (f, " flags %c%c%c",
1060 (p->p_flags & PF_R) != 0 ? 'r' : '-',
1061 (p->p_flags & PF_W) != 0 ? 'w' : '-',
1062 (p->p_flags & PF_X) != 0 ? 'x' : '-');
dc810e39
AM		 1063 if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0)
1064 fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X));
252b5132
RH		 1065 fprintf (f, "\n");
1066 }
1067 }
1068
1069 s = bfd_get_section_by_name (abfd, ".dynamic");
1070 if (s != NULL)
1071 {
1072 int elfsec;
dc810e39 1073 unsigned long shlink;
252b5132
RH		 1074 bfd_byte *extdyn, *extdynend;
1075 size_t extdynsize;
217aa764 1076 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
252b5132
RH		 1077
1078 fprintf (f, _("\nDynamic Section:\n"));
1079
eea6121a 1080 if (!bfd_malloc_and_get_section (abfd, s, &dynbuf))
252b5132
RH		 1081 goto error_return;
1082
1083 elfsec = _bfd_elf_section_from_bfd_section (abfd, s);
1084 if (elfsec == -1)
1085 goto error_return;
dc810e39 1086 shlink = elf_elfsections (abfd)[elfsec]->sh_link;
252b5132
RH		 1087
1088 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
1089 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
1090
1091 extdyn = dynbuf;
eea6121a 1092 extdynend = extdyn + s->size;
252b5132
RH		 1093 for (; extdyn < extdynend; extdyn += extdynsize)
1094 {
1095 Elf_Internal_Dyn dyn;
1096 const char *name;
1097 char ab[20];
b34976b6 1098 bfd_boolean stringp;
252b5132 1099
217aa764 1100 (*swap_dyn_in) (abfd, extdyn, &dyn);
252b5132
RH		 1101
1102 if (dyn.d_tag == DT_NULL)
1103 break;
1104
b34976b6 1105 stringp = FALSE;
252b5132
RH		 1106 switch (dyn.d_tag)
1107 {
1108 default:
1109 sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag);
1110 name = ab;
1111 break;
1112
b34976b6 1113 case DT_NEEDED: name = "NEEDED"; stringp = TRUE; break;
252b5132
RH		 1114 case DT_PLTRELSZ: name = "PLTRELSZ"; break;
1115 case DT_PLTGOT: name = "PLTGOT"; break;
1116 case DT_HASH: name = "HASH"; break;
1117 case DT_STRTAB: name = "STRTAB"; break;
1118 case DT_SYMTAB: name = "SYMTAB"; break;
1119 case DT_RELA: name = "RELA"; break;
1120 case DT_RELASZ: name = "RELASZ"; break;
1121 case DT_RELAENT: name = "RELAENT"; break;
1122 case DT_STRSZ: name = "STRSZ"; break;
1123 case DT_SYMENT: name = "SYMENT"; break;
1124 case DT_INIT: name = "INIT"; break;
1125 case DT_FINI: name = "FINI"; break;
b34976b6
AM		 1126 case DT_SONAME: name = "SONAME"; stringp = TRUE; break;
1127 case DT_RPATH: name = "RPATH"; stringp = TRUE; break;
252b5132
RH		 1128 case DT_SYMBOLIC: name = "SYMBOLIC"; break;
1129 case DT_REL: name = "REL"; break;
1130 case DT_RELSZ: name = "RELSZ"; break;
1131 case DT_RELENT: name = "RELENT"; break;
1132 case DT_PLTREL: name = "PLTREL"; break;
1133 case DT_DEBUG: name = "DEBUG"; break;
1134 case DT_TEXTREL: name = "TEXTREL"; break;
1135 case DT_JMPREL: name = "JMPREL"; break;
94558834
L		 1136 case DT_BIND_NOW: name = "BIND_NOW"; break;
1137 case DT_INIT_ARRAY: name = "INIT_ARRAY"; break;
1138 case DT_FINI_ARRAY: name = "FINI_ARRAY"; break;
1139 case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break;
1140 case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break;
b34976b6 1141 case DT_RUNPATH: name = "RUNPATH"; stringp = TRUE; break;
94558834
L		 1142 case DT_FLAGS: name = "FLAGS"; break;
1143 case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break;
1144 case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break;
d48188b9 1145 case DT_CHECKSUM: name = "CHECKSUM"; break;
94558834
L		 1146 case DT_PLTPADSZ: name = "PLTPADSZ"; break;
1147 case DT_MOVEENT: name = "MOVEENT"; break;
1148 case DT_MOVESZ: name = "MOVESZ"; break;
1149 case DT_FEATURE: name = "FEATURE"; break;
1150 case DT_POSFLAG_1: name = "POSFLAG_1"; break;
1151 case DT_SYMINSZ: name = "SYMINSZ"; break;
1152 case DT_SYMINENT: name = "SYMINENT"; break;
b34976b6
AM		 1153 case DT_CONFIG: name = "CONFIG"; stringp = TRUE; break;
1154 case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = TRUE; break;
1155 case DT_AUDIT: name = "AUDIT"; stringp = TRUE; break;
94558834
L		 1156 case DT_PLTPAD: name = "PLTPAD"; break;
1157 case DT_MOVETAB: name = "MOVETAB"; break;
1158 case DT_SYMINFO: name = "SYMINFO"; break;
1159 case DT_RELACOUNT: name = "RELACOUNT"; break;
1160 case DT_RELCOUNT: name = "RELCOUNT"; break;
1161 case DT_FLAGS_1: name = "FLAGS_1"; break;
252b5132
RH		 1162 case DT_VERSYM: name = "VERSYM"; break;
1163 case DT_VERDEF: name = "VERDEF"; break;
1164 case DT_VERDEFNUM: name = "VERDEFNUM"; break;
1165 case DT_VERNEED: name = "VERNEED"; break;
1166 case DT_VERNEEDNUM: name = "VERNEEDNUM"; break;
b34976b6 1167 case DT_AUXILIARY: name = "AUXILIARY"; stringp = TRUE; break;
94558834 1168 case DT_USED: name = "USED"; break;
b34976b6 1169 case DT_FILTER: name = "FILTER"; stringp = TRUE; break;
252b5132
RH		 1170 }
1171
1172 fprintf (f, " %-11s ", name);
1173 if (! stringp)
1174 fprintf (f, "0x%lx", (unsigned long) dyn.d_un.d_val);
1175 else
1176 {
1177 const char *string;
dc810e39 1178 unsigned int tagv = dyn.d_un.d_val;
252b5132 1179
dc810e39 1180 string = bfd_elf_string_from_elf_section (abfd, shlink, tagv);
252b5132
RH		 1181 if (string == NULL)
1182 goto error_return;
1183 fprintf (f, "%s", string);
1184 }
1185 fprintf (f, "\n");
1186 }
1187
1188 free (dynbuf);
1189 dynbuf = NULL;
1190 }
1191
1192 if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL)
1193 || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL))
1194 {
fc0e6df6 1195 if (! _bfd_elf_slurp_version_tables (abfd, FALSE))
b34976b6 1196 return FALSE;
252b5132
RH		 1197 }
1198
1199 if (elf_dynverdef (abfd) != 0)
1200 {
1201 Elf_Internal_Verdef *t;
1202
1203 fprintf (f, _("\nVersion definitions:\n"));
1204 for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef)
1205 {
1206 fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx,
1207 t->vd_flags, t->vd_hash, t->vd_nodename);
1208 if (t->vd_auxptr->vda_nextptr != NULL)
1209 {
1210 Elf_Internal_Verdaux *a;
1211
1212 fprintf (f, "\t");
1213 for (a = t->vd_auxptr->vda_nextptr;
1214 a != NULL;
1215 a = a->vda_nextptr)
1216 fprintf (f, "%s ", a->vda_nodename);
1217 fprintf (f, "\n");
1218 }
1219 }
1220 }
1221
1222 if (elf_dynverref (abfd) != 0)
1223 {
1224 Elf_Internal_Verneed *t;
1225
1226 fprintf (f, _("\nVersion References:\n"));
1227 for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref)
1228 {
1229 Elf_Internal_Vernaux *a;
1230
1231 fprintf (f, _(" required from %s:\n"), t->vn_filename);
1232 for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr)
1233 fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash,
1234 a->vna_flags, a->vna_other, a->vna_nodename);
1235 }
1236 }
1237
b34976b6 1238 return TRUE;
252b5132
RH		 1239
1240 error_return:
1241 if (dynbuf != NULL)
1242 free (dynbuf);
b34976b6 1243 return FALSE;
252b5132
RH		 1244}
1245
1246/* Display ELF-specific fields of a symbol. */
1247
1248void
217aa764
AM		 1249bfd_elf_print_symbol (bfd *abfd,
1250 void *filep,
1251 asymbol *symbol,
1252 bfd_print_symbol_type how)
252b5132 1253{
217aa764 1254 FILE *file = filep;
252b5132
RH		 1255 switch (how)
1256 {
1257 case bfd_print_symbol_name:
1258 fprintf (file, "%s", symbol->name);
1259 break;
1260 case bfd_print_symbol_more:
1261 fprintf (file, "elf ");
60b89a18 1262 bfd_fprintf_vma (abfd, file, symbol->value);
252b5132
RH		 1263 fprintf (file, " %lx", (long) symbol->flags);
1264 break;
1265 case bfd_print_symbol_all:
1266 {
4e8a9624
AM		 1267 const char *section_name;
1268 const char *name = NULL;
9c5bfbb7 1269 const struct elf_backend_data *bed;
7a13edea 1270 unsigned char st_other;
dbb410c3 1271 bfd_vma val;
c044fabd 1272
252b5132 1273 section_name = symbol->section ? symbol->section->name : "(*none*)";
587ff49e
RH		 1274
1275 bed = get_elf_backend_data (abfd);
1276 if (bed->elf_backend_print_symbol_all)
c044fabd 1277 name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol);
587ff49e
RH		 1278
1279 if (name == NULL)
1280 {
7ee38065 1281 name = symbol->name;
217aa764 1282 bfd_print_symbol_vandf (abfd, file, symbol);
587ff49e
RH		 1283 }
1284
252b5132
RH		 1285 fprintf (file, " %s\t", section_name);
1286 /* Print the "other" value for a symbol. For common symbols,
1287 we've already printed the size; now print the alignment.
1288 For other symbols, we have no specified alignment, and
1289 we've printed the address; now print the size. */
dbb410c3
AM		 1290 if (bfd_is_com_section (symbol->section))
1291 val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value;
1292 else
1293 val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size;
1294 bfd_fprintf_vma (abfd, file, val);
252b5132
RH		 1295
1296 /* If we have version information, print it. */
1297 if (elf_tdata (abfd)->dynversym_section != 0
1298 && (elf_tdata (abfd)->dynverdef_section != 0
1299 || elf_tdata (abfd)->dynverref_section != 0))
1300 {
1301 unsigned int vernum;
1302 const char *version_string;
1303
1304 vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION;
1305
1306 if (vernum == 0)
1307 version_string = "";
1308 else if (vernum == 1)
1309 version_string = "Base";
1310 else if (vernum <= elf_tdata (abfd)->cverdefs)
1311 version_string =
1312 elf_tdata (abfd)->verdef[vernum - 1].vd_nodename;
1313 else
1314 {
1315 Elf_Internal_Verneed *t;
1316
1317 version_string = "";
1318 for (t = elf_tdata (abfd)->verref;
1319 t != NULL;
1320 t = t->vn_nextref)
1321 {
1322 Elf_Internal_Vernaux *a;
1323
1324 for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr)
1325 {
1326 if (a->vna_other == vernum)
1327 {
1328 version_string = a->vna_nodename;
1329 break;
1330 }
1331 }
1332 }
1333 }
1334
1335 if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0)
1336 fprintf (file, " %-11s", version_string);
1337 else
1338 {
1339 int i;
1340
1341 fprintf (file, " (%s)", version_string);
1342 for (i = 10 - strlen (version_string); i > 0; --i)
1343 putc (' ', file);
1344 }
1345 }
1346
1347 /* If the st_other field is not zero, print it. */
7a13edea 1348 st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other;
c044fabd 1349
7a13edea
NC		 1350 switch (st_other)
1351 {
1352 case 0: break;
1353 case STV_INTERNAL: fprintf (file, " .internal"); break;
1354 case STV_HIDDEN: fprintf (file, " .hidden"); break;
1355 case STV_PROTECTED: fprintf (file, " .protected"); break;
1356 default:
1357 /* Some other non-defined flags are also present, so print
1358 everything hex. */
1359 fprintf (file, " 0x%02x", (unsigned int) st_other);
1360 }
252b5132 1361
587ff49e 1362 fprintf (file, " %s", name);
252b5132
RH		 1363 }
1364 break;
1365 }
1366}
1367\f
1368/* Create an entry in an ELF linker hash table. */
1369
1370struct bfd_hash_entry *
217aa764
AM		 1371_bfd_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
1372 struct bfd_hash_table *table,
1373 const char *string)
252b5132 1374{
252b5132
RH		 1375 /* Allocate the structure if it has not already been allocated by a
1376 subclass. */
51b64d56
AM		 1377 if (entry == NULL)
1378 {
1379 entry = bfd_hash_allocate (table, sizeof (struct elf_link_hash_entry));
1380 if (entry == NULL)
1381 return entry;
1382 }
252b5132
RH		 1383
1384 /* Call the allocation method of the superclass. */
51b64d56
AM		 1385 entry = _bfd_link_hash_newfunc (entry, table, string);
1386 if (entry != NULL)
252b5132 1387 {
51b64d56
AM		 1388 struct elf_link_hash_entry *ret = (struct elf_link_hash_entry *) entry;
1389 struct elf_link_hash_table *htab = (struct elf_link_hash_table *) table;
1390
252b5132
RH		 1391 /* Set local fields. */
1392 ret->indx = -1;
252b5132 1393 ret->dynindx = -1;
f6e332e6
AM		 1394 ret->got = ret->plt = htab->init_refcount;
1395 memset (&ret->size, 0, (sizeof (struct elf_link_hash_entry)
1396 - offsetof (struct elf_link_hash_entry, size)));
252b5132
RH		 1397 /* Assume that we have been called by a non-ELF symbol reader.
1398 This flag is then reset by the code which reads an ELF input
1399 file. This ensures that a symbol created by a non-ELF symbol
1400 reader will have the flag set correctly. */
f5385ebf 1401 ret->non_elf = 1;
252b5132
RH		 1402 }
1403
51b64d56 1404 return entry;
252b5132
RH		 1405}
1406
2920b85c 1407/* Copy data from an indirect symbol to its direct symbol, hiding the
0a991dfe 1408 old indirect symbol. Also used for copying flags to a weakdef. */
2920b85c 1409
c61b8717 1410void
9c5bfbb7 1411_bfd_elf_link_hash_copy_indirect (const struct elf_backend_data *bed,
217aa764
AM		 1412 struct elf_link_hash_entry *dir,
1413 struct elf_link_hash_entry *ind)
2920b85c 1414{
3c3e9281 1415 bfd_signed_vma tmp;
b48fa14c 1416 bfd_signed_vma lowest_valid = bed->can_refcount;
3c3e9281 1417
2920b85c
RH		 1418 /* Copy down any references that we may have already seen to the
1419 symbol which just became indirect. */
1420
f5385ebf
AM		 1421 dir->ref_dynamic |= ind->ref_dynamic;
1422 dir->ref_regular |= ind->ref_regular;
1423 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
1424 dir->non_got_ref |= ind->non_got_ref;
1425 dir->needs_plt |= ind->needs_plt;
1426 dir->pointer_equality_needed |= ind->pointer_equality_needed;
2920b85c 1427
1e370bd2 1428 if (ind->root.type != bfd_link_hash_indirect)
0a991dfe
AM		 1429 return;
1430
51b64d56 1431 /* Copy over the global and procedure linkage table refcount entries.
2920b85c 1432 These may have been already set up by a check_relocs routine. */
3c3e9281 1433 tmp = dir->got.refcount;
b48fa14c 1434 if (tmp < lowest_valid)
2920b85c 1435 {
51b64d56 1436 dir->got.refcount = ind->got.refcount;
3c3e9281 1437 ind->got.refcount = tmp;
2920b85c 1438 }
3c3e9281 1439 else
b48fa14c 1440 BFD_ASSERT (ind->got.refcount < lowest_valid);
2920b85c 1441
3c3e9281 1442 tmp = dir->plt.refcount;
b48fa14c 1443 if (tmp < lowest_valid)
2920b85c 1444 {
51b64d56 1445 dir->plt.refcount = ind->plt.refcount;
3c3e9281 1446 ind->plt.refcount = tmp;
2920b85c 1447 }
3c3e9281 1448 else
b48fa14c 1449 BFD_ASSERT (ind->plt.refcount < lowest_valid);
2920b85c
RH		 1450
1451 if (dir->dynindx == -1)
1452 {
1453 dir->dynindx = ind->dynindx;
1454 dir->dynstr_index = ind->dynstr_index;
1455 ind->dynindx = -1;
1456 ind->dynstr_index = 0;
1457 }
3c3e9281
AM		 1458 else
1459 BFD_ASSERT (ind->dynindx == -1);
2920b85c
RH		 1460}
1461
c61b8717 1462void
217aa764
AM		 1463_bfd_elf_link_hash_hide_symbol (struct bfd_link_info *info,
1464 struct elf_link_hash_entry *h,
1465 bfd_boolean force_local)
2920b85c 1466{
5cab59f6 1467 h->plt = elf_hash_table (info)->init_offset;
f5385ebf 1468 h->needs_plt = 0;
e5094212
AM		 1469 if (force_local)
1470 {
f5385ebf 1471 h->forced_local = 1;
e5094212
AM		 1472 if (h->dynindx != -1)
1473 {
1474 h->dynindx = -1;
1475 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1476 h->dynstr_index);
1477 }
1478 }
2920b85c
RH		 1479}
1480
252b5132
RH		 1481/* Initialize an ELF linker hash table. */
1482
b34976b6 1483bfd_boolean
217aa764
AM		 1484_bfd_elf_link_hash_table_init
1485 (struct elf_link_hash_table *table,
1486 bfd *abfd,
1487 struct bfd_hash_entry *(*newfunc) (struct bfd_hash_entry *,
1488 struct bfd_hash_table *,
1489 const char *))
252b5132 1490{
b34976b6 1491 bfd_boolean ret;
8ea2e4bd 1492
b34976b6 1493 table->dynamic_sections_created = FALSE;
252b5132 1494 table->dynobj = NULL;
963f13ec
AO		 1495 /* Make sure can_refcount is extended to the width and signedness of
1496 init_refcount before we subtract one from it. */
5cab59f6
AM		 1497 table->init_refcount.refcount = get_elf_backend_data (abfd)->can_refcount;
1498 table->init_refcount.refcount -= 1;
1499 table->init_offset.offset = -(bfd_vma) 1;
252b5132
RH		 1500 /* The first dynamic symbol is a dummy. */
1501 table->dynsymcount = 1;
1502 table->dynstr = NULL;
1503 table->bucketcount = 0;
1504 table->needed = NULL;
1505 table->hgot = NULL;
f5fa8ca2 1506 table->merge_info = NULL;
3722b82f 1507 memset (&table->stab_info, 0, sizeof (table->stab_info));
73722af0 1508 memset (&table->eh_info, 0, sizeof (table->eh_info));
1ae00f9d 1509 table->dynlocal = NULL;
73722af0 1510 table->runpath = NULL;
e1918d23
AM		 1511 table->tls_sec = NULL;
1512 table->tls_size = 0;
73722af0
AM		 1513 table->loaded = NULL;
1514
1515 ret = _bfd_link_hash_table_init (&table->root, abfd, newfunc);
8ea2e4bd
NC		 1516 table->root.type = bfd_link_elf_hash_table;
1517
1518 return ret;
252b5132
RH		 1519}
1520
1521/* Create an ELF linker hash table. */
1522
1523struct bfd_link_hash_table *
217aa764 1524_bfd_elf_link_hash_table_create (bfd *abfd)
252b5132
RH		 1525{
1526 struct elf_link_hash_table *ret;
dc810e39 1527 bfd_size_type amt = sizeof (struct elf_link_hash_table);
252b5132 1528
217aa764
AM		 1529 ret = bfd_malloc (amt);
1530 if (ret == NULL)
252b5132
RH		 1531 return NULL;
1532
1533 if (! _bfd_elf_link_hash_table_init (ret, abfd, _bfd_elf_link_hash_newfunc))
1534 {
e2d34d7d 1535 free (ret);
252b5132
RH		 1536 return NULL;
1537 }
1538
1539 return &ret->root;
1540}
1541
1542/* This is a hook for the ELF emulation code in the generic linker to
1543 tell the backend linker what file name to use for the DT_NEEDED
4a43e768 1544 entry for a dynamic object. */
252b5132
RH		 1545
1546void
217aa764 1547bfd_elf_set_dt_needed_name (bfd *abfd, const char *name)
252b5132
RH		 1548{
1549 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
1550 && bfd_get_format (abfd) == bfd_object)
1551 elf_dt_name (abfd) = name;
1552}
1553
e56f61be
L		 1554int
1555bfd_elf_get_dyn_lib_class (bfd *abfd)
1556{
1557 int lib_class;
1558 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
1559 && bfd_get_format (abfd) == bfd_object)
1560 lib_class = elf_dyn_lib_class (abfd);
1561 else
1562 lib_class = 0;
1563 return lib_class;
1564}
1565
74816898 1566void
4a43e768 1567bfd_elf_set_dyn_lib_class (bfd *abfd, int lib_class)
74816898
L		 1568{
1569 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
1570 && bfd_get_format (abfd) == bfd_object)
4a43e768 1571 elf_dyn_lib_class (abfd) = lib_class;
74816898
L		 1572}
1573
252b5132
RH		 1574/* Get the list of DT_NEEDED entries for a link. This is a hook for
1575 the linker ELF emulation code. */
1576
1577struct bfd_link_needed_list *
217aa764
AM		 1578bfd_elf_get_needed_list (bfd *abfd ATTRIBUTE_UNUSED,
1579 struct bfd_link_info *info)
252b5132 1580{
0eddce27 1581 if (! is_elf_hash_table (info->hash))
252b5132
RH		 1582 return NULL;
1583 return elf_hash_table (info)->needed;
1584}
1585
a963dc6a
L		 1586/* Get the list of DT_RPATH/DT_RUNPATH entries for a link. This is a
1587 hook for the linker ELF emulation code. */
1588
1589struct bfd_link_needed_list *
217aa764
AM		 1590bfd_elf_get_runpath_list (bfd *abfd ATTRIBUTE_UNUSED,
1591 struct bfd_link_info *info)
a963dc6a 1592{
0eddce27 1593 if (! is_elf_hash_table (info->hash))
a963dc6a
L		 1594 return NULL;
1595 return elf_hash_table (info)->runpath;
1596}
1597
252b5132
RH		 1598/* Get the name actually used for a dynamic object for a link. This
1599 is the SONAME entry if there is one. Otherwise, it is the string
1600 passed to bfd_elf_set_dt_needed_name, or it is the filename. */
1601
1602const char *
217aa764 1603bfd_elf_get_dt_soname (bfd *abfd)
252b5132
RH		 1604{
1605 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
1606 && bfd_get_format (abfd) == bfd_object)
1607 return elf_dt_name (abfd);
1608 return NULL;
1609}
1610
1611/* Get the list of DT_NEEDED entries from a BFD. This is a hook for
1612 the ELF linker emulation code. */
1613
b34976b6 1614bfd_boolean
217aa764
AM		 1615bfd_elf_get_bfd_needed_list (bfd *abfd,
1616 struct bfd_link_needed_list **pneeded)
252b5132
RH		 1617{
1618 asection *s;
1619 bfd_byte *dynbuf = NULL;
1620 int elfsec;
dc810e39 1621 unsigned long shlink;
252b5132
RH		 1622 bfd_byte *extdyn, *extdynend;
1623 size_t extdynsize;
217aa764 1624 void (*swap_dyn_in) (bfd *, const void *, Elf_Internal_Dyn *);
252b5132
RH		 1625
1626 *pneeded = NULL;
1627
1628 if (bfd_get_flavour (abfd) != bfd_target_elf_flavour
1629 || bfd_get_format (abfd) != bfd_object)
b34976b6 1630 return TRUE;
252b5132
RH		 1631
1632 s = bfd_get_section_by_name (abfd, ".dynamic");
eea6121a 1633 if (s == NULL || s->size == 0)
b34976b6 1634 return TRUE;
252b5132 1635
eea6121a 1636 if (!bfd_malloc_and_get_section (abfd, s, &dynbuf))
252b5132
RH		 1637 goto error_return;
1638
1639 elfsec = _bfd_elf_section_from_bfd_section (abfd, s);
1640 if (elfsec == -1)
1641 goto error_return;
1642
dc810e39 1643 shlink = elf_elfsections (abfd)[elfsec]->sh_link;
252b5132
RH		 1644
1645 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
1646 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
1647
1648 extdyn = dynbuf;
eea6121a 1649 extdynend = extdyn + s->size;
252b5132
RH		 1650 for (; extdyn < extdynend; extdyn += extdynsize)
1651 {
1652 Elf_Internal_Dyn dyn;
1653
217aa764 1654 (*swap_dyn_in) (abfd, extdyn, &dyn);
252b5132
RH		 1655
1656 if (dyn.d_tag == DT_NULL)
1657 break;
1658
1659 if (dyn.d_tag == DT_NEEDED)
1660 {
1661 const char *string;
1662 struct bfd_link_needed_list *l;
dc810e39
AM		 1663 unsigned int tagv = dyn.d_un.d_val;
1664 bfd_size_type amt;
252b5132 1665
dc810e39 1666 string = bfd_elf_string_from_elf_section (abfd, shlink, tagv);
252b5132
RH		 1667 if (string == NULL)
1668 goto error_return;
1669
dc810e39 1670 amt = sizeof *l;
217aa764 1671 l = bfd_alloc (abfd, amt);
252b5132
RH		 1672 if (l == NULL)
1673 goto error_return;
1674
1675 l->by = abfd;
1676 l->name = string;
1677 l->next = *pneeded;
1678 *pneeded = l;
1679 }
1680 }
1681
1682 free (dynbuf);
1683
b34976b6 1684 return TRUE;
252b5132
RH		 1685
1686 error_return:
1687 if (dynbuf != NULL)
1688 free (dynbuf);
b34976b6 1689 return FALSE;
252b5132
RH		 1690}
1691\f
1692/* Allocate an ELF string table--force the first byte to be zero. */
1693
1694struct bfd_strtab_hash *
217aa764 1695_bfd_elf_stringtab_init (void)
252b5132
RH		 1696{
1697 struct bfd_strtab_hash *ret;
1698
1699 ret = _bfd_stringtab_init ();
1700 if (ret != NULL)
1701 {
1702 bfd_size_type loc;
1703
b34976b6 1704 loc = _bfd_stringtab_add (ret, "", TRUE, FALSE);
252b5132
RH		 1705 BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1);
1706 if (loc == (bfd_size_type) -1)
1707 {
1708 _bfd_stringtab_free (ret);
1709 ret = NULL;
1710 }
1711 }
1712 return ret;
1713}
1714\f
1715/* ELF .o/exec file reading */
1716
c044fabd 1717/* Create a new bfd section from an ELF section header. */
252b5132 1718
b34976b6 1719bfd_boolean
217aa764 1720bfd_section_from_shdr (bfd *abfd, unsigned int shindex)
252b5132
RH		 1721{
1722 Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex];
1723 Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd);
9c5bfbb7 1724 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
90937f86 1725 const char *name;
252b5132
RH		 1726
1727 name = elf_string_from_elf_strtab (abfd, hdr->sh_name);
1728
1729 switch (hdr->sh_type)
1730 {
1731 case SHT_NULL:
1732 /* Inactive section. Throw it away. */
b34976b6 1733 return TRUE;
252b5132
RH		 1734
1735 case SHT_PROGBITS: /* Normal section with contents. */
252b5132
RH		 1736 case SHT_NOBITS: /* .bss section. */
1737 case SHT_HASH: /* .hash section. */
1738 case SHT_NOTE: /* .note section. */
25e27870
L		 1739 case SHT_INIT_ARRAY: /* .init_array section. */
1740 case SHT_FINI_ARRAY: /* .fini_array section. */
1741 case SHT_PREINIT_ARRAY: /* .preinit_array section. */
7f1204bb 1742 case SHT_GNU_LIBLIST: /* .gnu.liblist section. */
252b5132
RH		 1743 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1744
797fc050
AM		 1745 case SHT_DYNAMIC: /* Dynamic linking information. */
1746 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
b34976b6 1747 return FALSE;
797fc050
AM		 1748 if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB)
1749 {
1750 Elf_Internal_Shdr *dynsymhdr;
1751
1752 /* The shared libraries distributed with hpux11 have a bogus
1753 sh_link field for the ".dynamic" section. Find the
1754 string table for the ".dynsym" section instead. */
1755 if (elf_dynsymtab (abfd) != 0)
1756 {
1757 dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)];
1758 hdr->sh_link = dynsymhdr->sh_link;
1759 }
1760 else
1761 {
1762 unsigned int i, num_sec;
1763
1764 num_sec = elf_numsections (abfd);
1765 for (i = 1; i < num_sec; i++)
1766 {
1767 dynsymhdr = elf_elfsections (abfd)[i];
1768 if (dynsymhdr->sh_type == SHT_DYNSYM)
1769 {
1770 hdr->sh_link = dynsymhdr->sh_link;
1771 break;
1772 }
1773 }
1774 }
1775 }
1776 break;
1777
252b5132
RH		 1778 case SHT_SYMTAB: /* A symbol table */
1779 if (elf_onesymtab (abfd) == shindex)
b34976b6 1780 return TRUE;
252b5132
RH		 1781
1782 BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym);
1783 BFD_ASSERT (elf_onesymtab (abfd) == 0);
1784 elf_onesymtab (abfd) = shindex;
1785 elf_tdata (abfd)->symtab_hdr = *hdr;
1786 elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr;
1787 abfd->flags |= HAS_SYMS;
1788
1789 /* Sometimes a shared object will map in the symbol table. If
1790 SHF_ALLOC is set, and this is a shared object, then we also
1791 treat this section as a BFD section. We can not base the
1792 decision purely on SHF_ALLOC, because that flag is sometimes
1049f94e 1793 set in a relocatable object file, which would confuse the
252b5132
RH		 1794 linker. */
1795 if ((hdr->sh_flags & SHF_ALLOC) != 0
1796 && (abfd->flags & DYNAMIC) != 0
1797 && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
b34976b6 1798 return FALSE;
252b5132 1799
b34976b6 1800 return TRUE;
252b5132
RH		 1801
1802 case SHT_DYNSYM: /* A dynamic symbol table */
1803 if (elf_dynsymtab (abfd) == shindex)
b34976b6 1804 return TRUE;
252b5132
RH		 1805
1806 BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym);
1807 BFD_ASSERT (elf_dynsymtab (abfd) == 0);
1808 elf_dynsymtab (abfd) = shindex;
1809 elf_tdata (abfd)->dynsymtab_hdr = *hdr;
1810 elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr;
1811 abfd->flags |= HAS_SYMS;
1812
1813 /* Besides being a symbol table, we also treat this as a regular
1814 section, so that objcopy can handle it. */
1815 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1816
9ad5cbcf
AM		 1817 case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */
1818 if (elf_symtab_shndx (abfd) == shindex)
b34976b6 1819 return TRUE;
9ad5cbcf
AM		 1820
1821 /* Get the associated symbol table. */
1822 if (! bfd_section_from_shdr (abfd, hdr->sh_link)
1823 || hdr->sh_link != elf_onesymtab (abfd))
b34976b6 1824 return FALSE;
9ad5cbcf
AM		 1825
1826 elf_symtab_shndx (abfd) = shindex;
1827 elf_tdata (abfd)->symtab_shndx_hdr = *hdr;
1828 elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr;
b34976b6 1829 return TRUE;
9ad5cbcf 1830
252b5132
RH		 1831 case SHT_STRTAB: /* A string table */
1832 if (hdr->bfd_section != NULL)
b34976b6 1833 return TRUE;
252b5132
RH		 1834 if (ehdr->e_shstrndx == shindex)
1835 {
1836 elf_tdata (abfd)->shstrtab_hdr = *hdr;
1837 elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr;
b34976b6 1838 return TRUE;
252b5132
RH		 1839 }
1840 {
9ad5cbcf 1841 unsigned int i, num_sec;
252b5132 1842
9ad5cbcf
AM		 1843 num_sec = elf_numsections (abfd);
1844 for (i = 1; i < num_sec; i++)
252b5132
RH		 1845 {
1846 Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i];
1847 if (hdr2->sh_link == shindex)
1848 {
1849 if (! bfd_section_from_shdr (abfd, i))
b34976b6 1850 return FALSE;
252b5132
RH		 1851 if (elf_onesymtab (abfd) == i)
1852 {
1853 elf_tdata (abfd)->strtab_hdr = *hdr;
1854 elf_elfsections (abfd)[shindex] =
1855 &elf_tdata (abfd)->strtab_hdr;
b34976b6 1856 return TRUE;
252b5132
RH		 1857 }
1858 if (elf_dynsymtab (abfd) == i)
1859 {
1860 elf_tdata (abfd)->dynstrtab_hdr = *hdr;
1861 elf_elfsections (abfd)[shindex] = hdr =
1862 &elf_tdata (abfd)->dynstrtab_hdr;
1863 /* We also treat this as a regular section, so
1864 that objcopy can handle it. */
1865 break;
1866 }
1867#if 0 /* Not handling other string tables specially right now. */
1868 hdr2 = elf_elfsections (abfd)[i]; /* in case it moved */
1869 /* We have a strtab for some random other section. */
1870 newsect = (asection *) hdr2->bfd_section;
1871 if (!newsect)
1872 break;
1873 hdr->bfd_section = newsect;
1874 hdr2 = &elf_section_data (newsect)->str_hdr;
1875 *hdr2 = *hdr;
1876 elf_elfsections (abfd)[shindex] = hdr2;
1877#endif
1878 }
1879 }
1880 }
1881
1882 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1883
1884 case SHT_REL:
1885 case SHT_RELA:
1886 /* *These* do a lot of work -- but build no sections! */
1887 {
1888 asection *target_sect;
1889 Elf_Internal_Shdr *hdr2;
9ad5cbcf 1890 unsigned int num_sec = elf_numsections (abfd);
252b5132 1891
03ae5f59 1892 /* Check for a bogus link to avoid crashing. */
9ad5cbcf
AM		 1893 if ((hdr->sh_link >= SHN_LORESERVE && hdr->sh_link <= SHN_HIRESERVE)
1894 || hdr->sh_link >= num_sec)
03ae5f59
ILT		 1895 {
1896 ((*_bfd_error_handler)
d003868e
AM		 1897 (_("%B: invalid link %lu for reloc section %s (index %u)"),
1898 abfd, hdr->sh_link, name, shindex));
03ae5f59
ILT		 1899 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1900 }
1901
252b5132
RH		 1902 /* For some incomprehensible reason Oracle distributes
1903 libraries for Solaris in which some of the objects have
1904 bogus sh_link fields. It would be nice if we could just
1905 reject them, but, unfortunately, some people need to use
1906 them. We scan through the section headers; if we find only
1907 one suitable symbol table, we clobber the sh_link to point
1908 to it. I hope this doesn't break anything. */
1909 if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB
1910 && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM)
1911 {
9ad5cbcf 1912 unsigned int scan;
252b5132
RH		 1913 int found;
1914
1915 found = 0;
9ad5cbcf 1916 for (scan = 1; scan < num_sec; scan++)
252b5132
RH		 1917 {
1918 if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB
1919 || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM)
1920 {
1921 if (found != 0)
1922 {
1923 found = 0;
1924 break;
1925 }
1926 found = scan;
1927 }
1928 }
1929 if (found != 0)
1930 hdr->sh_link = found;
1931 }
1932
1933 /* Get the symbol table. */
1934 if (elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB
1935 && ! bfd_section_from_shdr (abfd, hdr->sh_link))
b34976b6 1936 return FALSE;
252b5132
RH		 1937
1938 /* If this reloc section does not use the main symbol table we
1939 don't treat it as a reloc section. BFD can't adequately
1940 represent such a section, so at least for now, we don't
c044fabd 1941 try. We just present it as a normal section. We also
60bcf0fa 1942 can't use it as a reloc section if it points to the null
c044fabd 1943 section. */
60bcf0fa 1944 if (hdr->sh_link != elf_onesymtab (abfd) || hdr->sh_info == SHN_UNDEF)
252b5132
RH		 1945 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1946
1947 if (! bfd_section_from_shdr (abfd, hdr->sh_info))
b34976b6 1948 return FALSE;
252b5132
RH		 1949 target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info);
1950 if (target_sect == NULL)
b34976b6 1951 return FALSE;
252b5132
RH		 1952
1953 if ((target_sect->flags & SEC_RELOC) == 0
1954 || target_sect->reloc_count == 0)
1955 hdr2 = &elf_section_data (target_sect)->rel_hdr;
1956 else
1957 {
dc810e39 1958 bfd_size_type amt;
252b5132 1959 BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL);
dc810e39 1960 amt = sizeof (*hdr2);
217aa764 1961 hdr2 = bfd_alloc (abfd, amt);
252b5132
RH		 1962 elf_section_data (target_sect)->rel_hdr2 = hdr2;
1963 }
1964 *hdr2 = *hdr;
1965 elf_elfsections (abfd)[shindex] = hdr2;
d9bc7a44 1966 target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr);
252b5132
RH		 1967 target_sect->flags |= SEC_RELOC;
1968 target_sect->relocation = NULL;
1969 target_sect->rel_filepos = hdr->sh_offset;
bf572ba0
MM		 1970 /* In the section to which the relocations apply, mark whether
1971 its relocations are of the REL or RELA variety. */
72730e0c 1972 if (hdr->sh_size != 0)
68bfbfcc 1973 target_sect->use_rela_p = hdr->sh_type == SHT_RELA;
252b5132 1974 abfd->flags |= HAS_RELOC;
b34976b6 1975 return TRUE;
252b5132
RH		 1976 }
1977 break;
1978
1979 case SHT_GNU_verdef:
1980 elf_dynverdef (abfd) = shindex;
1981 elf_tdata (abfd)->dynverdef_hdr = *hdr;
1982 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1983 break;
1984
1985 case SHT_GNU_versym:
1986 elf_dynversym (abfd) = shindex;
1987 elf_tdata (abfd)->dynversym_hdr = *hdr;
1988 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1989 break;
1990
1991 case SHT_GNU_verneed:
1992 elf_dynverref (abfd) = shindex;
1993 elf_tdata (abfd)->dynverref_hdr = *hdr;
1994 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1995 break;
1996
1997 case SHT_SHLIB:
b34976b6 1998 return TRUE;
252b5132 1999
dbb410c3 2000 case SHT_GROUP:
b885599b
AM		 2001 /* We need a BFD section for objcopy and relocatable linking,
2002 and it's handy to have the signature available as the section
2003 name. */
2004 name = group_signature (abfd, hdr);
2005 if (name == NULL)
b34976b6 2006 return FALSE;
dbb410c3 2007 if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name))
b34976b6 2008 return FALSE;
dbb410c3
AM		 2009 if (hdr->contents != NULL)
2010 {
2011 Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents;
2012 unsigned int n_elt = hdr->sh_size / 4;
2013 asection *s;
2014
b885599b
AM		 2015 if (idx->flags & GRP_COMDAT)
2016 hdr->bfd_section->flags
2017 |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
2018
45c5e9ed
L		 2019 /* We try to keep the same section order as it comes in. */
2020 idx += n_elt;
dbb410c3 2021 while (--n_elt != 0)
45c5e9ed 2022 if ((s = (--idx)->shdr->bfd_section) != NULL
945906ff 2023 && elf_next_in_group (s) != NULL)
dbb410c3 2024 {
945906ff 2025 elf_next_in_group (hdr->bfd_section) = s;
dbb410c3
AM		 2026 break;
2027 }
2028 }
2029 break;
2030
252b5132
RH		 2031 default:
2032 /* Check for any processor-specific section types. */
2033 {
2034 if (bed->elf_backend_section_from_shdr)
2035 (*bed->elf_backend_section_from_shdr) (abfd, hdr, name);
2036 }
2037 break;
2038 }
2039
b34976b6 2040 return TRUE;
252b5132
RH		 2041}
2042
ec338859
AM		 2043/* Return the section for the local symbol specified by ABFD, R_SYMNDX.
2044 Return SEC for sections that have no elf section, and NULL on error. */
2045
2046asection *
217aa764
AM		 2047bfd_section_from_r_symndx (bfd *abfd,
2048 struct sym_sec_cache *cache,
2049 asection *sec,
2050 unsigned long r_symndx)
ec338859 2051{
ec338859 2052 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc
AM		 2053 unsigned char esym[sizeof (Elf64_External_Sym)];
2054 Elf_External_Sym_Shndx eshndx;
2055 Elf_Internal_Sym isym;
ec338859
AM		 2056 unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE;
2057
2058 if (cache->abfd == abfd && cache->indx[ent] == r_symndx)
2059 return cache->sec[ent];
2060
2061 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
6cdc0ccc
AM		 2062 if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx,
2063 &isym, esym, &eshndx) == NULL)
ec338859 2064 return NULL;
9ad5cbcf 2065
ec338859
AM		 2066 if (cache->abfd != abfd)
2067 {
2068 memset (cache->indx, -1, sizeof (cache->indx));
2069 cache->abfd = abfd;
2070 }
2071 cache->indx[ent] = r_symndx;
2072 cache->sec[ent] = sec;
50bc7936
AM		 2073 if ((isym.st_shndx != SHN_UNDEF && isym.st_shndx < SHN_LORESERVE)
2074 || isym.st_shndx > SHN_HIRESERVE)
ec338859
AM		 2075 {
2076 asection *s;
6cdc0ccc 2077 s = bfd_section_from_elf_index (abfd, isym.st_shndx);
ec338859
AM		 2078 if (s != NULL)
2079 cache->sec[ent] = s;
2080 }
2081 return cache->sec[ent];
2082}
2083
252b5132
RH		 2084/* Given an ELF section number, retrieve the corresponding BFD
2085 section. */
2086
2087asection *
217aa764 2088bfd_section_from_elf_index (bfd *abfd, unsigned int index)
252b5132 2089{
9ad5cbcf 2090 if (index >= elf_numsections (abfd))
252b5132
RH		 2091 return NULL;
2092 return elf_elfsections (abfd)[index]->bfd_section;
2093}
2094
2f89ff8d
L		 2095static struct bfd_elf_special_section const special_sections[] =
2096{
7dcb9820 2097 { ".bss", 4, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
6723a9f4 2098 { ".gnu.linkonce.b",15, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
7dcb9820
AM		 2099 { ".comment", 8, 0, SHT_PROGBITS, 0 },
2100 { ".data", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2101 { ".data1", 6, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2102 { ".debug", 6, 0, SHT_PROGBITS, 0 },
2103 { ".fini", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
2104 { ".init", 5, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
2105 { ".line", 5, 0, SHT_PROGBITS, 0 },
2106 { ".rodata", 7, -2, SHT_PROGBITS, SHF_ALLOC },
2107 { ".rodata1", 8, 0, SHT_PROGBITS, SHF_ALLOC },
2108 { ".tbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS },
2109 { ".tdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_TLS },
2110 { ".text", 5, -2, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
2111 { ".init_array", 11, 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_WRITE },
2112 { ".fini_array", 11, 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_WRITE },
2113 { ".preinit_array", 14, 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_WRITE },
2114 { ".debug_line", 11, 0, SHT_PROGBITS, 0 },
2115 { ".debug_info", 11, 0, SHT_PROGBITS, 0 },
2116 { ".debug_abbrev", 13, 0, SHT_PROGBITS, 0 },
2117 { ".debug_aranges", 14, 0, SHT_PROGBITS, 0 },
2118 { ".dynamic", 8, 0, SHT_DYNAMIC, SHF_ALLOC },
2119 { ".dynstr", 7, 0, SHT_STRTAB, SHF_ALLOC },
2120 { ".dynsym", 7, 0, SHT_DYNSYM, SHF_ALLOC },
2121 { ".got", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
2122 { ".hash", 5, 0, SHT_HASH, SHF_ALLOC },
2123 { ".interp", 7, 0, SHT_PROGBITS, 0 },
2124 { ".plt", 4, 0, SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
2125 { ".shstrtab", 9, 0, SHT_STRTAB, 0 },
2126 { ".strtab", 7, 0, SHT_STRTAB, 0 },
2127 { ".symtab", 7, 0, SHT_SYMTAB, 0 },
2128 { ".gnu.version", 12, 0, SHT_GNU_versym, 0 },
2129 { ".gnu.version_d", 14, 0, SHT_GNU_verdef, 0 },
2130 { ".gnu.version_r", 14, 0, SHT_GNU_verneed, 0 },
45c5e9ed 2131 { ".note.GNU-stack",15, 0, SHT_PROGBITS, 0 },
7dcb9820
AM		 2132 { ".note", 5, -1, SHT_NOTE, 0 },
2133 { ".rela", 5, -1, SHT_RELA, 0 },
2134 { ".rel", 4, -1, SHT_REL, 0 },
2135 { ".stabstr", 5, 3, SHT_STRTAB, 0 },
7f1204bb
JJ		 2136 { ".gnu.liblist", 12, 0, SHT_GNU_LIBLIST, SHF_ALLOC },
2137 { ".gnu.conflict", 13, 0, SHT_RELA, SHF_ALLOC },
7dcb9820 2138 { NULL, 0, 0, 0, 0 }
2f89ff8d
L		 2139};
2140
2141static const struct bfd_elf_special_section *
2142get_special_section (const char *name,
2143 const struct bfd_elf_special_section *special_sections,
2144 unsigned int rela)
2145{
2146 int i;
7dcb9820 2147 int len = strlen (name);
2f89ff8d
L		 2148
2149 for (i = 0; special_sections[i].prefix != NULL; i++)
7dcb9820
AM		 2150 {
2151 int suffix_len;
2152 int prefix_len = special_sections[i].prefix_length;
2153
2154 if (len < prefix_len)
2155 continue;
2156 if (memcmp (name, special_sections[i].prefix, prefix_len) != 0)
2157 continue;
2158
2159 suffix_len = special_sections[i].suffix_length;
2160 if (suffix_len <= 0)
2161 {
2162 if (name[prefix_len] != 0)
2163 {
2164 if (suffix_len == 0)
2165 continue;
2166 if (name[prefix_len] != '.'
2167 && (suffix_len == -2
2168 || (rela && special_sections[i].type == SHT_REL)))
2169 continue;
2170 }
2171 }
2172 else
2173 {
2174 if (len < prefix_len + suffix_len)
2175 continue;
2176 if (memcmp (name + len - suffix_len,
2177 special_sections[i].prefix + prefix_len,
2178 suffix_len) != 0)
2179 continue;
2180 }
2f89ff8d 2181 return &special_sections[i];
7dcb9820 2182 }
2f89ff8d
L		 2183
2184 return NULL;
2185}
2186
7dcb9820
AM		 2187const struct bfd_elf_special_section *
2188_bfd_elf_get_sec_type_attr (bfd *abfd, const char *name)
2f89ff8d 2189{
9c5bfbb7 2190 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
7dcb9820 2191 const struct bfd_elf_special_section *ssect = NULL;
2f89ff8d
L		 2192
2193 /* See if this is one of the special sections. */
2194 if (name)
2195 {
9c5bfbb7 2196 unsigned int rela = bed->default_use_rela_p;
2f89ff8d
L		 2197
2198 if (bed->special_sections)
2199 ssect = get_special_section (name, bed->special_sections, rela);
2200
2201 if (! ssect)
2202 ssect = get_special_section (name, special_sections, rela);
2f89ff8d
L		 2203 }
2204
7dcb9820 2205 return ssect;
2f89ff8d
L		 2206}
2207
b34976b6 2208bfd_boolean
217aa764 2209_bfd_elf_new_section_hook (bfd *abfd, asection *sec)
252b5132
RH		 2210{
2211 struct bfd_elf_section_data *sdata;
7dcb9820 2212 const struct bfd_elf_special_section *ssect;
252b5132 2213
f0abc2a1
AM		 2214 sdata = (struct bfd_elf_section_data *) sec->used_by_bfd;
2215 if (sdata == NULL)
2216 {
217aa764 2217 sdata = bfd_zalloc (abfd, sizeof (*sdata));
f0abc2a1
AM		 2218 if (sdata == NULL)
2219 return FALSE;
217aa764 2220 sec->used_by_bfd = sdata;
f0abc2a1 2221 }
bf572ba0 2222
3cddba1e 2223 elf_section_type (sec) = SHT_NULL;
7dcb9820
AM		 2224 ssect = _bfd_elf_get_sec_type_attr (abfd, sec->name);
2225 if (ssect != NULL)
2f89ff8d 2226 {
7dcb9820
AM		 2227 elf_section_type (sec) = ssect->type;
2228 elf_section_flags (sec) = ssect->attr;
2f89ff8d
L		 2229 }
2230
bf572ba0 2231 /* Indicate whether or not this section should use RELA relocations. */
68bfbfcc 2232 sec->use_rela_p = get_elf_backend_data (abfd)->default_use_rela_p;
bf572ba0 2233
b34976b6 2234 return TRUE;
252b5132
RH		 2235}
2236
2237/* Create a new bfd section from an ELF program header.
2238
2239 Since program segments have no names, we generate a synthetic name
2240 of the form segment<NUM>, where NUM is generally the index in the
2241 program header table. For segments that are split (see below) we
2242 generate the names segment<NUM>a and segment<NUM>b.
2243
2244 Note that some program segments may have a file size that is different than
2245 (less than) the memory size. All this means is that at execution the
2246 system must allocate the amount of memory specified by the memory size,
2247 but only initialize it with the first "file size" bytes read from the
2248 file. This would occur for example, with program segments consisting
2249 of combined data+bss.
2250
2251 To handle the above situation, this routine generates TWO bfd sections
2252 for the single program segment. The first has the length specified by
2253 the file size of the segment, and the second has the length specified
2254 by the difference between the two sizes. In effect, the segment is split
2255 into it's initialized and uninitialized parts.
2256
2257 */
2258
b34976b6 2259bfd_boolean
217aa764
AM		 2260_bfd_elf_make_section_from_phdr (bfd *abfd,
2261 Elf_Internal_Phdr *hdr,
2262 int index,
2263 const char *typename)
252b5132
RH		 2264{
2265 asection *newsect;
2266 char *name;
2267 char namebuf[64];
d4c88bbb 2268 size_t len;
252b5132
RH		 2269 int split;
2270
2271 split = ((hdr->p_memsz > 0)
2272 && (hdr->p_filesz > 0)
2273 && (hdr->p_memsz > hdr->p_filesz));
27ac83bf 2274 sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : "");
d4c88bbb 2275 len = strlen (namebuf) + 1;
217aa764 2276 name = bfd_alloc (abfd, len);
252b5132 2277 if (!name)
b34976b6 2278 return FALSE;
d4c88bbb 2279 memcpy (name, namebuf, len);
252b5132
RH		 2280 newsect = bfd_make_section (abfd, name);
2281 if (newsect == NULL)
b34976b6 2282 return FALSE;
252b5132
RH		 2283 newsect->vma = hdr->p_vaddr;
2284 newsect->lma = hdr->p_paddr;
eea6121a 2285 newsect->size = hdr->p_filesz;
252b5132
RH		 2286 newsect->filepos = hdr->p_offset;
2287 newsect->flags |= SEC_HAS_CONTENTS;
57e24cbf 2288 newsect->alignment_power = bfd_log2 (hdr->p_align);
252b5132
RH		 2289 if (hdr->p_type == PT_LOAD)
2290 {
2291 newsect->flags |= SEC_ALLOC;
2292 newsect->flags |= SEC_LOAD;
2293 if (hdr->p_flags & PF_X)
2294 {
2295 /* FIXME: all we known is that it has execute PERMISSION,
c044fabd 2296 may be data. */
252b5132
RH		 2297 newsect->flags |= SEC_CODE;
2298 }
2299 }
2300 if (!(hdr->p_flags & PF_W))
2301 {
2302 newsect->flags |= SEC_READONLY;
2303 }
2304
2305 if (split)
2306 {
27ac83bf 2307 sprintf (namebuf, "%s%db", typename, index);
d4c88bbb 2308 len = strlen (namebuf) + 1;
217aa764 2309 name = bfd_alloc (abfd, len);
252b5132 2310 if (!name)
b34976b6 2311 return FALSE;
d4c88bbb 2312 memcpy (name, namebuf, len);
252b5132
RH		 2313 newsect = bfd_make_section (abfd, name);
2314 if (newsect == NULL)
b34976b6 2315 return FALSE;
252b5132
RH		 2316 newsect->vma = hdr->p_vaddr + hdr->p_filesz;
2317 newsect->lma = hdr->p_paddr + hdr->p_filesz;
eea6121a 2318 newsect->size = hdr->p_memsz - hdr->p_filesz;
252b5132
RH		 2319 if (hdr->p_type == PT_LOAD)
2320 {
2321 newsect->flags |= SEC_ALLOC;
2322 if (hdr->p_flags & PF_X)
2323 newsect->flags |= SEC_CODE;
2324 }
2325 if (!(hdr->p_flags & PF_W))
2326 newsect->flags |= SEC_READONLY;
2327 }
2328
b34976b6 2329 return TRUE;
252b5132
RH		 2330}
2331
b34976b6 2332bfd_boolean
217aa764 2333bfd_section_from_phdr (bfd *abfd, Elf_Internal_Phdr *hdr, int index)
20cfcaae 2334{
9c5bfbb7 2335 const struct elf_backend_data *bed;
20cfcaae
NC		 2336
2337 switch (hdr->p_type)
2338 {
2339 case PT_NULL:
2340 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "null");
2341
2342 case PT_LOAD:
2343 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "load");
2344
2345 case PT_DYNAMIC:
2346 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "dynamic");
2347
2348 case PT_INTERP:
2349 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "interp");
2350
2351 case PT_NOTE:
2352 if (! _bfd_elf_make_section_from_phdr (abfd, hdr, index, "note"))
b34976b6 2353 return FALSE;
217aa764 2354 if (! elfcore_read_notes (abfd, hdr->p_offset, hdr->p_filesz))
b34976b6
AM		 2355 return FALSE;
2356 return TRUE;
20cfcaae
NC		 2357
2358 case PT_SHLIB:
2359 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "shlib");
2360
2361 case PT_PHDR:
2362 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "phdr");
2363
811072d8
RM		 2364 case PT_GNU_EH_FRAME:
2365 return _bfd_elf_make_section_from_phdr (abfd, hdr, index,
2366 "eh_frame_hdr");
2367
9ee5e499
JJ		 2368 case PT_GNU_STACK:
2369 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "stack");
2370
8c37241b
JJ		 2371 case PT_GNU_RELRO:
2372 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "relro");
2373
20cfcaae
NC		 2374 default:
2375 /* Check for any processor-specific program segment types.
c044fabd 2376 If no handler for them, default to making "segment" sections. */
20cfcaae
NC		 2377 bed = get_elf_backend_data (abfd);
2378 if (bed->elf_backend_section_from_phdr)
2379 return (*bed->elf_backend_section_from_phdr) (abfd, hdr, index);
2380 else
2381 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "segment");
2382 }
2383}
2384
23bc299b 2385/* Initialize REL_HDR, the section-header for new section, containing
b34976b6 2386 relocations against ASECT. If USE_RELA_P is TRUE, we use RELA
23bc299b
MM		 2387 relocations; otherwise, we use REL relocations. */
2388
b34976b6 2389bfd_boolean
217aa764
AM		 2390_bfd_elf_init_reloc_shdr (bfd *abfd,
2391 Elf_Internal_Shdr *rel_hdr,
2392 asection *asect,
2393 bfd_boolean use_rela_p)
23bc299b
MM		 2394{
2395 char *name;
9c5bfbb7 2396 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
dc810e39 2397 bfd_size_type amt = sizeof ".rela" + strlen (asect->name);
23bc299b 2398
dc810e39 2399 name = bfd_alloc (abfd, amt);
23bc299b 2400 if (name == NULL)
b34976b6 2401 return FALSE;
23bc299b
MM		 2402 sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name);
2403 rel_hdr->sh_name =
2b0f7ef9 2404 (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name,
b34976b6 2405 FALSE);
23bc299b 2406 if (rel_hdr->sh_name == (unsigned int) -1)
b34976b6 2407 return FALSE;
23bc299b
MM		 2408 rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL;
2409 rel_hdr->sh_entsize = (use_rela_p
2410 ? bed->s->sizeof_rela
2411 : bed->s->sizeof_rel);
45d6a902 2412 rel_hdr->sh_addralign = 1 << bed->s->log_file_align;
23bc299b
MM		 2413 rel_hdr->sh_flags = 0;
2414 rel_hdr->sh_addr = 0;
2415 rel_hdr->sh_size = 0;
2416 rel_hdr->sh_offset = 0;
2417
b34976b6 2418 return TRUE;
23bc299b
MM		 2419}
2420
252b5132
RH		 2421/* Set up an ELF internal section header for a section. */
2422
252b5132 2423static void
217aa764 2424elf_fake_sections (bfd *abfd, asection *asect, void *failedptrarg)
252b5132 2425{
9c5bfbb7 2426 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
217aa764 2427 bfd_boolean *failedptr = failedptrarg;
252b5132
RH		 2428 Elf_Internal_Shdr *this_hdr;
2429
2430 if (*failedptr)
2431 {
2432 /* We already failed; just get out of the bfd_map_over_sections
2433 loop. */
2434 return;
2435 }
2436
2437 this_hdr = &elf_section_data (asect)->this_hdr;
2438
e57b5356
AM		 2439 this_hdr->sh_name = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd),
2440 asect->name, FALSE);
2441 if (this_hdr->sh_name == (unsigned int) -1)
252b5132 2442 {
b34976b6 2443 *failedptr = TRUE;
252b5132
RH		 2444 return;
2445 }
2446
2447 this_hdr->sh_flags = 0;
2448
2449 if ((asect->flags & SEC_ALLOC) != 0
2450 || asect->user_set_vma)
2451 this_hdr->sh_addr = asect->vma;
2452 else
2453 this_hdr->sh_addr = 0;
2454
2455 this_hdr->sh_offset = 0;
eea6121a 2456 this_hdr->sh_size = asect->size;
252b5132
RH		 2457 this_hdr->sh_link = 0;
2458 this_hdr->sh_addralign = 1 << asect->alignment_power;
2459 /* The sh_entsize and sh_info fields may have been set already by
2460 copy_private_section_data. */
2461
2462 this_hdr->bfd_section = asect;
2463 this_hdr->contents = NULL;
2464
3cddba1e
L		 2465 /* If the section type is unspecified, we set it based on
2466 asect->flags. */
2467 if (this_hdr->sh_type == SHT_NULL)
2468 {
45c5e9ed
L		 2469 if ((asect->flags & SEC_GROUP) != 0)
2470 {
2471 /* We also need to mark SHF_GROUP here for relocatable
2472 link. */
2473 struct bfd_link_order *l;
2474 asection *elt;
2475
2476 for (l = asect->link_order_head; l != NULL; l = l->next)
2477 if (l->type == bfd_indirect_link_order
2478 && (elt = elf_next_in_group (l->u.indirect.section)) != NULL)
2479 do
2480 {
2481 /* The name is not important. Anything will do. */
2482 elf_group_name (elt->output_section) = "G";
2483 elf_section_flags (elt->output_section) |= SHF_GROUP;
2484
2485 elt = elf_next_in_group (elt);
2486 /* During a relocatable link, the lists are
2487 circular. */
2488 }
2489 while (elt != elf_next_in_group (l->u.indirect.section));
2490
2491 this_hdr->sh_type = SHT_GROUP;
2492 }
2493 else if ((asect->flags & SEC_ALLOC) != 0
3cddba1e
L		 2494 && (((asect->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
2495 || (asect->flags & SEC_NEVER_LOAD) != 0))
2496 this_hdr->sh_type = SHT_NOBITS;
2497 else
2498 this_hdr->sh_type = SHT_PROGBITS;
2499 }
2500
2f89ff8d 2501 switch (this_hdr->sh_type)
252b5132 2502 {
2f89ff8d 2503 default:
2f89ff8d
L		 2504 break;
2505
2506 case SHT_STRTAB:
2507 case SHT_INIT_ARRAY:
2508 case SHT_FINI_ARRAY:
2509 case SHT_PREINIT_ARRAY:
2510 case SHT_NOTE:
2511 case SHT_NOBITS:
2512 case SHT_PROGBITS:
2513 break;
2514
2515 case SHT_HASH:
c7ac6ff8 2516 this_hdr->sh_entsize = bed->s->sizeof_hash_entry;
2f89ff8d 2517 break;
5de3bf90 2518
2f89ff8d 2519 case SHT_DYNSYM:
252b5132 2520 this_hdr->sh_entsize = bed->s->sizeof_sym;
2f89ff8d
L		 2521 break;
2522
2523 case SHT_DYNAMIC:
252b5132 2524 this_hdr->sh_entsize = bed->s->sizeof_dyn;
2f89ff8d
L		 2525 break;
2526
2527 case SHT_RELA:
2528 if (get_elf_backend_data (abfd)->may_use_rela_p)
2529 this_hdr->sh_entsize = bed->s->sizeof_rela;
2530 break;
2531
2532 case SHT_REL:
2533 if (get_elf_backend_data (abfd)->may_use_rel_p)
2534 this_hdr->sh_entsize = bed->s->sizeof_rel;
2535 break;
2536
2537 case SHT_GNU_versym:
252b5132 2538 this_hdr->sh_entsize = sizeof (Elf_External_Versym);
2f89ff8d
L		 2539 break;
2540
2541 case SHT_GNU_verdef:
252b5132
RH		 2542 this_hdr->sh_entsize = 0;
2543 /* objcopy or strip will copy over sh_info, but may not set
2544 cverdefs. The linker will set cverdefs, but sh_info will be
2545 zero. */
2546 if (this_hdr->sh_info == 0)
2547 this_hdr->sh_info = elf_tdata (abfd)->cverdefs;
2548 else
2549 BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0
2550 || this_hdr->sh_info == elf_tdata (abfd)->cverdefs);
2f89ff8d
L		 2551 break;
2552
2553 case SHT_GNU_verneed:
252b5132
RH		 2554 this_hdr->sh_entsize = 0;
2555 /* objcopy or strip will copy over sh_info, but may not set
2556 cverrefs. The linker will set cverrefs, but sh_info will be
2557 zero. */
2558 if (this_hdr->sh_info == 0)
2559 this_hdr->sh_info = elf_tdata (abfd)->cverrefs;
2560 else
2561 BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0
2562 || this_hdr->sh_info == elf_tdata (abfd)->cverrefs);
2f89ff8d
L		 2563 break;
2564
2565 case SHT_GROUP:
dbb410c3 2566 this_hdr->sh_entsize = 4;
2f89ff8d 2567 break;
dbb410c3 2568 }
252b5132
RH		 2569
2570 if ((asect->flags & SEC_ALLOC) != 0)
2571 this_hdr->sh_flags |= SHF_ALLOC;
2572 if ((asect->flags & SEC_READONLY) == 0)
2573 this_hdr->sh_flags |= SHF_WRITE;
2574 if ((asect->flags & SEC_CODE) != 0)
2575 this_hdr->sh_flags |= SHF_EXECINSTR;
f5fa8ca2
JJ		 2576 if ((asect->flags & SEC_MERGE) != 0)
2577 {
2578 this_hdr->sh_flags |= SHF_MERGE;
2579 this_hdr->sh_entsize = asect->entsize;
2580 if ((asect->flags & SEC_STRINGS) != 0)
2581 this_hdr->sh_flags |= SHF_STRINGS;
2582 }
1126897b 2583 if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL)
dbb410c3 2584 this_hdr->sh_flags |= SHF_GROUP;
13ae64f3 2585 if ((asect->flags & SEC_THREAD_LOCAL) != 0)
704afa60
JJ		 2586 {
2587 this_hdr->sh_flags |= SHF_TLS;
eea6121a 2588 if (asect->size == 0 && (asect->flags & SEC_HAS_CONTENTS) == 0)
704afa60
JJ		 2589 {
2590 struct bfd_link_order *o;
b34976b6 2591
704afa60
JJ		 2592 this_hdr->sh_size = 0;
2593 for (o = asect->link_order_head; o != NULL; o = o->next)
2594 if (this_hdr->sh_size < o->offset + o->size)
2595 this_hdr->sh_size = o->offset + o->size;
2596 if (this_hdr->sh_size)
2597 this_hdr->sh_type = SHT_NOBITS;
2598 }
2599 }
252b5132
RH		 2600
2601 /* Check for processor-specific section types. */
e1fddb6b
AO		 2602 if (bed->elf_backend_fake_sections
2603 && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect))
b34976b6 2604 *failedptr = TRUE;
252b5132
RH		 2605
2606 /* If the section has relocs, set up a section header for the
23bc299b
MM		 2607 SHT_REL[A] section. If two relocation sections are required for
2608 this section, it is up to the processor-specific back-end to
c044fabd 2609 create the other. */
23bc299b 2610 if ((asect->flags & SEC_RELOC) != 0
c044fabd 2611 && !_bfd_elf_init_reloc_shdr (abfd,
23bc299b 2612 &elf_section_data (asect)->rel_hdr,
c044fabd 2613 asect,
68bfbfcc 2614 asect->use_rela_p))
b34976b6 2615 *failedptr = TRUE;
252b5132
RH		 2616}
2617
dbb410c3
AM		 2618/* Fill in the contents of a SHT_GROUP section. */
2619
1126897b 2620void
217aa764 2621bfd_elf_set_group_contents (bfd *abfd, asection *sec, void *failedptrarg)
dbb410c3 2622{
217aa764 2623 bfd_boolean *failedptr = failedptrarg;
dbb410c3 2624 unsigned long symindx;
9dce4196 2625 asection *elt, *first;
dbb410c3
AM		 2626 unsigned char *loc;
2627 struct bfd_link_order *l;
b34976b6 2628 bfd_boolean gas;
dbb410c3
AM		 2629
2630 if (elf_section_data (sec)->this_hdr.sh_type != SHT_GROUP
2631 || *failedptr)
2632 return;
2633
1126897b
AM		 2634 symindx = 0;
2635 if (elf_group_id (sec) != NULL)
2636 symindx = elf_group_id (sec)->udata.i;
2637
2638 if (symindx == 0)
2639 {
2640 /* If called from the assembler, swap_out_syms will have set up
2641 elf_section_syms; If called for "ld -r", use target_index. */
2642 if (elf_section_syms (abfd) != NULL)
2643 symindx = elf_section_syms (abfd)[sec->index]->udata.i;
2644 else
2645 symindx = sec->target_index;
2646 }
dbb410c3
AM		 2647 elf_section_data (sec)->this_hdr.sh_info = symindx;
2648
1126897b 2649 /* The contents won't be allocated for "ld -r" or objcopy. */
b34976b6 2650 gas = TRUE;
dbb410c3
AM		 2651 if (sec->contents == NULL)
2652 {
b34976b6 2653 gas = FALSE;
eea6121a 2654 sec->contents = bfd_alloc (abfd, sec->size);
9dce4196
AM		 2655
2656 /* Arrange for the section to be written out. */
2657 elf_section_data (sec)->this_hdr.contents = sec->contents;
dbb410c3
AM		 2658 if (sec->contents == NULL)
2659 {
b34976b6 2660 *failedptr = TRUE;
dbb410c3
AM		 2661 return;
2662 }
2663 }
2664
eea6121a 2665 loc = sec->contents + sec->size;
dbb410c3 2666
9dce4196
AM		 2667 /* Get the pointer to the first section in the group that gas
2668 squirreled away here. objcopy arranges for this to be set to the
2669 start of the input section group. */
2670 first = elt = elf_next_in_group (sec);
dbb410c3
AM		 2671
2672 /* First element is a flag word. Rest of section is elf section
2673 indices for all the sections of the group. Write them backwards
2674 just to keep the group in the same order as given in .section
2675 directives, not that it matters. */
2676 while (elt != NULL)
2677 {
9dce4196
AM		 2678 asection *s;
2679 unsigned int idx;
2680
dbb410c3 2681 loc -= 4;
9dce4196
AM		 2682 s = elt;
2683 if (!gas)
2684 s = s->output_section;
2685 idx = 0;
2686 if (s != NULL)
2687 idx = elf_section_data (s)->this_idx;
2688 H_PUT_32 (abfd, idx, loc);
945906ff 2689 elt = elf_next_in_group (elt);
9dce4196
AM		 2690 if (elt == first)
2691 break;
dbb410c3
AM		 2692 }
2693
2694 /* If this is a relocatable link, then the above did nothing because
2695 SEC is the output section. Look through the input sections
2696 instead. */
2697 for (l = sec->link_order_head; l != NULL; l = l->next)
2698 if (l->type == bfd_indirect_link_order
945906ff 2699 && (elt = elf_next_in_group (l->u.indirect.section)) != NULL)
dbb410c3
AM		 2700 do
2701 {
2702 loc -= 4;
2703 H_PUT_32 (abfd,
2704 elf_section_data (elt->output_section)->this_idx, loc);
945906ff 2705 elt = elf_next_in_group (elt);
dbb410c3
AM		 2706 /* During a relocatable link, the lists are circular. */
2707 }
945906ff 2708 while (elt != elf_next_in_group (l->u.indirect.section));
dbb410c3 2709
3d7f7666 2710 if ((loc -= 4) != sec->contents)
9dce4196 2711 abort ();
dbb410c3 2712
9dce4196 2713 H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc);
dbb410c3
AM		 2714}
2715
252b5132
RH		 2716/* Assign all ELF section numbers. The dummy first section is handled here
2717 too. The link/info pointers for the standard section types are filled
2718 in here too, while we're at it. */
2719
b34976b6 2720static bfd_boolean
217aa764 2721assign_section_numbers (bfd *abfd)
252b5132
RH		 2722{
2723 struct elf_obj_tdata *t = elf_tdata (abfd);
2724 asection *sec;
2b0f7ef9 2725 unsigned int section_number, secn;
252b5132 2726 Elf_Internal_Shdr **i_shdrp;
dc810e39 2727 bfd_size_type amt;
47cc2cf5 2728 struct bfd_elf_section_data *d;
252b5132
RH		 2729
2730 section_number = 1;
2731
2b0f7ef9
JJ		 2732 _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd));
2733
47cc2cf5 2734 /* Put SHT_GROUP sections first. */
252b5132
RH		 2735 for (sec = abfd->sections; sec; sec = sec->next)
2736 {
47cc2cf5 2737 d = elf_section_data (sec);
252b5132 2738
47cc2cf5
PB		 2739 if (d->this_hdr.sh_type == SHT_GROUP)
2740 {
2741 if (section_number == SHN_LORESERVE)
2742 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
2743 d->this_idx = section_number++;
2744 }
2745 }
2746
2747 for (sec = abfd->sections; sec; sec = sec->next)
2748 {
2749 d = elf_section_data (sec);
2750
2751 if (d->this_hdr.sh_type != SHT_GROUP)
2752 {
2753 if (section_number == SHN_LORESERVE)
2754 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
2755 d->this_idx = section_number++;
2756 }
2b0f7ef9 2757 _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name);
252b5132
RH		 2758 if ((sec->flags & SEC_RELOC) == 0)
2759 d->rel_idx = 0;
2760 else
2b0f7ef9 2761 {
9ad5cbcf
AM		 2762 if (section_number == SHN_LORESERVE)
2763 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
2b0f7ef9
JJ		 2764 d->rel_idx = section_number++;
2765 _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr.sh_name);
2766 }
23bc299b
MM		 2767
2768 if (d->rel_hdr2)
2b0f7ef9 2769 {
9ad5cbcf
AM		 2770 if (section_number == SHN_LORESERVE)
2771 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
2b0f7ef9
JJ		 2772 d->rel_idx2 = section_number++;
2773 _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr2->sh_name);
2774 }
23bc299b
MM		 2775 else
2776 d->rel_idx2 = 0;
252b5132
RH		 2777 }
2778
9ad5cbcf
AM		 2779 if (section_number == SHN_LORESERVE)
2780 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
252b5132 2781 t->shstrtab_section = section_number++;
2b0f7ef9 2782 _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name);
252b5132 2783 elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section;
252b5132
RH		 2784
2785 if (bfd_get_symcount (abfd) > 0)
2786 {
9ad5cbcf
AM		 2787 if (section_number == SHN_LORESERVE)
2788 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
252b5132 2789 t->symtab_section = section_number++;
2b0f7ef9 2790 _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name);
9ad5cbcf
AM		 2791 if (section_number > SHN_LORESERVE - 2)
2792 {
2793 if (section_number == SHN_LORESERVE)
2794 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
2795 t->symtab_shndx_section = section_number++;
2796 t->symtab_shndx_hdr.sh_name
2797 = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd),
b34976b6 2798 ".symtab_shndx", FALSE);
9ad5cbcf 2799 if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1)
b34976b6 2800 return FALSE;
9ad5cbcf
AM		 2801 }
2802 if (section_number == SHN_LORESERVE)
2803 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
252b5132 2804 t->strtab_section = section_number++;
2b0f7ef9 2805 _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name);
252b5132
RH		 2806 }
2807
2b0f7ef9
JJ		 2808 _bfd_elf_strtab_finalize (elf_shstrtab (abfd));
2809 t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd));
9ad5cbcf
AM		 2810
2811 elf_numsections (abfd) = section_number;
252b5132 2812 elf_elfheader (abfd)->e_shnum = section_number;
9ad5cbcf
AM		 2813 if (section_number > SHN_LORESERVE)
2814 elf_elfheader (abfd)->e_shnum -= SHN_HIRESERVE + 1 - SHN_LORESERVE;
252b5132
RH		 2815
2816 /* Set up the list of section header pointers, in agreement with the
2817 indices. */
dc810e39 2818 amt = section_number * sizeof (Elf_Internal_Shdr *);
217aa764 2819 i_shdrp = bfd_zalloc (abfd, amt);
252b5132 2820 if (i_shdrp == NULL)
b34976b6 2821 return FALSE;
252b5132 2822
dc810e39 2823 amt = sizeof (Elf_Internal_Shdr);
217aa764 2824 i_shdrp[0] = bfd_zalloc (abfd, amt);
252b5132
RH		 2825 if (i_shdrp[0] == NULL)
2826 {
2827 bfd_release (abfd, i_shdrp);
b34976b6 2828 return FALSE;
252b5132 2829 }
252b5132
RH		 2830
2831 elf_elfsections (abfd) = i_shdrp;
2832
2833 i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr;
2834 if (bfd_get_symcount (abfd) > 0)
2835 {
2836 i_shdrp[t->symtab_section] = &t->symtab_hdr;
9ad5cbcf
AM		 2837 if (elf_numsections (abfd) > SHN_LORESERVE)
2838 {
2839 i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr;
2840 t->symtab_shndx_hdr.sh_link = t->symtab_section;
2841 }
252b5132
RH		 2842 i_shdrp[t->strtab_section] = &t->strtab_hdr;
2843 t->symtab_hdr.sh_link = t->strtab_section;
2844 }
38ce5b11 2845
252b5132
RH		 2846 for (sec = abfd->sections; sec; sec = sec->next)
2847 {
2848 struct bfd_elf_section_data *d = elf_section_data (sec);
2849 asection *s;
2850 const char *name;
2851
2852 i_shdrp[d->this_idx] = &d->this_hdr;
2853 if (d->rel_idx != 0)
2854 i_shdrp[d->rel_idx] = &d->rel_hdr;
23bc299b
MM		 2855 if (d->rel_idx2 != 0)
2856 i_shdrp[d->rel_idx2] = d->rel_hdr2;
252b5132
RH		 2857
2858 /* Fill in the sh_link and sh_info fields while we're at it. */
2859
2860 /* sh_link of a reloc section is the section index of the symbol
2861 table. sh_info is the section index of the section to which
2862 the relocation entries apply. */
2863 if (d->rel_idx != 0)
2864 {
2865 d->rel_hdr.sh_link = t->symtab_section;
2866 d->rel_hdr.sh_info = d->this_idx;
2867 }
23bc299b
MM		 2868 if (d->rel_idx2 != 0)
2869 {
2870 d->rel_hdr2->sh_link = t->symtab_section;
2871 d->rel_hdr2->sh_info = d->this_idx;
2872 }
252b5132 2873
38ce5b11
L		 2874 /* We need to set up sh_link for SHF_LINK_ORDER. */
2875 if ((d->this_hdr.sh_flags & SHF_LINK_ORDER) != 0)
2876 {
2877 s = elf_linked_to_section (sec);
2878 if (s)
2879 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
2880 else
2881 {
2882 struct bfd_link_order *p;
2883
2884 /* Find out what the corresponding section in output
2885 is. */
2886 for (p = sec->link_order_head; p != NULL; p = p->next)
2887 {
2888 s = p->u.indirect.section;
2889 if (p->type == bfd_indirect_link_order
2890 && (bfd_get_flavour (s->owner)
2891 == bfd_target_elf_flavour))
2892 {
2893 Elf_Internal_Shdr ** const elf_shdrp
2894 = elf_elfsections (s->owner);
2895 int elfsec
2896 = _bfd_elf_section_from_bfd_section (s->owner, s);
2897 elfsec = elf_shdrp[elfsec]->sh_link;
185d09ad
L		 2898 /* PR 290:
2899 The Intel C compiler generates SHT_IA_64_UNWIND with
2900 SHF_LINK_ORDER. But it doesn't set theh sh_link or
2901 sh_info fields. Hence we could get the situation
2902 where elfsec is 0. */
2903 if (elfsec == 0)
2904 {
2905 const struct elf_backend_data *bed
2906 = get_elf_backend_data (abfd);
2907 if (bed->link_order_error_handler)
d003868e
AM		 2908 bed->link_order_error_handler
2909 (_("%B: warning: sh_link not set for section `%S'"),
2910 abfd, s);
185d09ad
L		 2911 }
2912 else
2913 {
2914 s = elf_shdrp[elfsec]->bfd_section->output_section;
2915 BFD_ASSERT (s != NULL);
2916 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
2917 }
38ce5b11
L		 2918 break;
2919 }
2920 }
2921 }
2922 }
2923
252b5132
RH		 2924 switch (d->this_hdr.sh_type)
2925 {
2926 case SHT_REL:
2927 case SHT_RELA:
2928 /* A reloc section which we are treating as a normal BFD
2929 section. sh_link is the section index of the symbol
2930 table. sh_info is the section index of the section to
2931 which the relocation entries apply. We assume that an
2932 allocated reloc section uses the dynamic symbol table.
2933 FIXME: How can we be sure? */
2934 s = bfd_get_section_by_name (abfd, ".dynsym");
2935 if (s != NULL)
2936 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
2937
2938 /* We look up the section the relocs apply to by name. */
2939 name = sec->name;
2940 if (d->this_hdr.sh_type == SHT_REL)
2941 name += 4;
2942 else
2943 name += 5;
2944 s = bfd_get_section_by_name (abfd, name);
2945 if (s != NULL)
2946 d->this_hdr.sh_info = elf_section_data (s)->this_idx;
2947 break;
2948
2949 case SHT_STRTAB:
2950 /* We assume that a section named .stab*str is a stabs
2951 string section. We look for a section with the same name
2952 but without the trailing ``str'', and set its sh_link
2953 field to point to this section. */
2954 if (strncmp (sec->name, ".stab", sizeof ".stab" - 1) == 0
2955 && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0)
2956 {
2957 size_t len;
2958 char *alc;
2959
2960 len = strlen (sec->name);
217aa764 2961 alc = bfd_malloc (len - 2);
252b5132 2962 if (alc == NULL)
b34976b6 2963 return FALSE;
d4c88bbb 2964 memcpy (alc, sec->name, len - 3);
252b5132
RH		 2965 alc[len - 3] = '\0';
2966 s = bfd_get_section_by_name (abfd, alc);
2967 free (alc);
2968 if (s != NULL)
2969 {
2970 elf_section_data (s)->this_hdr.sh_link = d->this_idx;
2971
2972 /* This is a .stab section. */
0594c12d
AM		 2973 if (elf_section_data (s)->this_hdr.sh_entsize == 0)
2974 elf_section_data (s)->this_hdr.sh_entsize
2975 = 4 + 2 * bfd_get_arch_size (abfd) / 8;
252b5132
RH		 2976 }
2977 }
2978 break;
2979
2980 case SHT_DYNAMIC:
2981 case SHT_DYNSYM:
2982 case SHT_GNU_verneed:
2983 case SHT_GNU_verdef:
2984 /* sh_link is the section header index of the string table
2985 used for the dynamic entries, or the symbol table, or the
2986 version strings. */
2987 s = bfd_get_section_by_name (abfd, ".dynstr");
2988 if (s != NULL)
2989 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
2990 break;
2991
7f1204bb
JJ		 2992 case SHT_GNU_LIBLIST:
2993 /* sh_link is the section header index of the prelink library
2994 list
2995 used for the dynamic entries, or the symbol table, or the
2996 version strings. */
2997 s = bfd_get_section_by_name (abfd, (sec->flags & SEC_ALLOC)
2998 ? ".dynstr" : ".gnu.libstr");
2999 if (s != NULL)
3000 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
3001 break;
3002
252b5132
RH		 3003 case SHT_HASH:
3004 case SHT_GNU_versym:
3005 /* sh_link is the section header index of the symbol table
3006 this hash table or version table is for. */
3007 s = bfd_get_section_by_name (abfd, ".dynsym");
3008 if (s != NULL)
3009 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
3010 break;
dbb410c3
AM		 3011
3012 case SHT_GROUP:
3013 d->this_hdr.sh_link = t->symtab_section;
252b5132
RH		 3014 }
3015 }
3016
2b0f7ef9 3017 for (secn = 1; secn < section_number; ++secn)
9ad5cbcf
AM		 3018 if (i_shdrp[secn] == NULL)
3019 i_shdrp[secn] = i_shdrp[0];
3020 else
3021 i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd),
3022 i_shdrp[secn]->sh_name);
b34976b6 3023 return TRUE;
252b5132
RH		 3024}
3025
3026/* Map symbol from it's internal number to the external number, moving
3027 all local symbols to be at the head of the list. */
3028
268b6b39 3029static int
217aa764 3030sym_is_global (bfd *abfd, asymbol *sym)
252b5132
RH		 3031{
3032 /* If the backend has a special mapping, use it. */
9c5bfbb7 3033 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
217aa764
AM		 3034 if (bed->elf_backend_sym_is_global)
3035 return (*bed->elf_backend_sym_is_global) (abfd, sym);
252b5132
RH		 3036
3037 return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0
3038 || bfd_is_und_section (bfd_get_section (sym))
3039 || bfd_is_com_section (bfd_get_section (sym)));
3040}
3041
b34976b6 3042static bfd_boolean
217aa764 3043elf_map_symbols (bfd *abfd)
252b5132 3044{
dc810e39 3045 unsigned int symcount = bfd_get_symcount (abfd);
252b5132
RH		 3046 asymbol **syms = bfd_get_outsymbols (abfd);
3047 asymbol **sect_syms;
dc810e39
AM		 3048 unsigned int num_locals = 0;
3049 unsigned int num_globals = 0;
3050 unsigned int num_locals2 = 0;
3051 unsigned int num_globals2 = 0;
252b5132 3052 int max_index = 0;
dc810e39 3053 unsigned int idx;
252b5132
RH		 3054 asection *asect;
3055 asymbol **new_syms;
dc810e39 3056 bfd_size_type amt;
252b5132
RH		 3057
3058#ifdef DEBUG
3059 fprintf (stderr, "elf_map_symbols\n");
3060 fflush (stderr);
3061#endif
3062
252b5132
RH		 3063 for (asect = abfd->sections; asect; asect = asect->next)
3064 {
3065 if (max_index < asect->index)
3066 max_index = asect->index;
3067 }
3068
3069 max_index++;
dc810e39 3070 amt = max_index * sizeof (asymbol *);
217aa764 3071 sect_syms = bfd_zalloc (abfd, amt);
252b5132 3072 if (sect_syms == NULL)
b34976b6 3073 return FALSE;
252b5132 3074 elf_section_syms (abfd) = sect_syms;
4e89ac30 3075 elf_num_section_syms (abfd) = max_index;
252b5132 3076
079e9a2f
AM		 3077 /* Init sect_syms entries for any section symbols we have already
3078 decided to output. */
252b5132
RH		 3079 for (idx = 0; idx < symcount; idx++)
3080 {
dc810e39 3081 asymbol *sym = syms[idx];
c044fabd 3082
252b5132
RH		 3083 if ((sym->flags & BSF_SECTION_SYM) != 0
3084 && sym->value == 0)
3085 {
3086 asection *sec;
3087
3088 sec = sym->section;
3089
3090 if (sec->owner != NULL)
3091 {
3092 if (sec->owner != abfd)
3093 {
3094 if (sec->output_offset != 0)
3095 continue;
c044fabd 3096
252b5132
RH		 3097 sec = sec->output_section;
3098
079e9a2f
AM		 3099 /* Empty sections in the input files may have had a
3100 section symbol created for them. (See the comment
3101 near the end of _bfd_generic_link_output_symbols in
3102 linker.c). If the linker script discards such
3103 sections then we will reach this point. Since we know
3104 that we cannot avoid this case, we detect it and skip
3105 the abort and the assignment to the sect_syms array.
3106 To reproduce this particular case try running the
3107 linker testsuite test ld-scripts/weak.exp for an ELF
3108 port that uses the generic linker. */
252b5132
RH		 3109 if (sec->owner == NULL)
3110 continue;
3111
3112 BFD_ASSERT (sec->owner == abfd);
3113 }
3114 sect_syms[sec->index] = syms[idx];
3115 }
3116 }
3117 }
3118
252b5132
RH		 3119 /* Classify all of the symbols. */
3120 for (idx = 0; idx < symcount; idx++)
3121 {
3122 if (!sym_is_global (abfd, syms[idx]))
3123 num_locals++;
3124 else
3125 num_globals++;
3126 }
079e9a2f
AM		 3127
3128 /* We will be adding a section symbol for each BFD section. Most normal
3129 sections will already have a section symbol in outsymbols, but
3130 eg. SHT_GROUP sections will not, and we need the section symbol mapped
3131 at least in that case. */
252b5132
RH		 3132 for (asect = abfd->sections; asect; asect = asect->next)
3133 {
079e9a2f 3134 if (sect_syms[asect->index] == NULL)
252b5132 3135 {
079e9a2f 3136 if (!sym_is_global (abfd, asect->symbol))
252b5132
RH		 3137 num_locals++;
3138 else
3139 num_globals++;
252b5132
RH		 3140 }
3141 }
3142
3143 /* Now sort the symbols so the local symbols are first. */
dc810e39 3144 amt = (num_locals + num_globals) * sizeof (asymbol *);
217aa764 3145 new_syms = bfd_alloc (abfd, amt);
dc810e39 3146
252b5132 3147 if (new_syms == NULL)
b34976b6 3148 return FALSE;
252b5132
RH		 3149
3150 for (idx = 0; idx < symcount; idx++)
3151 {
3152 asymbol *sym = syms[idx];
dc810e39 3153 unsigned int i;
252b5132
RH		 3154
3155 if (!sym_is_global (abfd, sym))
3156 i = num_locals2++;
3157 else
3158 i = num_locals + num_globals2++;
3159 new_syms[i] = sym;
3160 sym->udata.i = i + 1;
3161 }
3162 for (asect = abfd->sections; asect; asect = asect->next)
3163 {
079e9a2f 3164 if (sect_syms[asect->index] == NULL)
252b5132 3165 {
079e9a2f 3166 asymbol *sym = asect->symbol;
dc810e39 3167 unsigned int i;
252b5132 3168
079e9a2f 3169 sect_syms[asect->index] = sym;
252b5132
RH		 3170 if (!sym_is_global (abfd, sym))
3171 i = num_locals2++;
3172 else
3173 i = num_locals + num_globals2++;
3174 new_syms[i] = sym;
3175 sym->udata.i = i + 1;
3176 }
3177 }
3178
3179 bfd_set_symtab (abfd, new_syms, num_locals + num_globals);
3180
3181 elf_num_locals (abfd) = num_locals;
3182 elf_num_globals (abfd) = num_globals;
b34976b6 3183 return TRUE;
252b5132
RH		 3184}
3185
3186/* Align to the maximum file alignment that could be required for any
3187 ELF data structure. */
3188
268b6b39 3189static inline file_ptr
217aa764 3190align_file_position (file_ptr off, int align)
252b5132
RH		 3191{
3192 return (off + align - 1) & ~(align - 1);
3193}
3194
3195/* Assign a file position to a section, optionally aligning to the
3196 required section alignment. */
3197
217aa764
AM		 3198file_ptr
3199_bfd_elf_assign_file_position_for_section (Elf_Internal_Shdr *i_shdrp,
3200 file_ptr offset,
3201 bfd_boolean align)
252b5132
RH		 3202{
3203 if (align)
3204 {
3205 unsigned int al;
3206
3207 al = i_shdrp->sh_addralign;
3208 if (al > 1)
3209 offset = BFD_ALIGN (offset, al);
3210 }
3211 i_shdrp->sh_offset = offset;
3212 if (i_shdrp->bfd_section != NULL)
3213 i_shdrp->bfd_section->filepos = offset;
3214 if (i_shdrp->sh_type != SHT_NOBITS)
3215 offset += i_shdrp->sh_size;
3216 return offset;
3217}
3218
3219/* Compute the file positions we are going to put the sections at, and
3220 otherwise prepare to begin writing out the ELF file. If LINK_INFO
3221 is not NULL, this is being called by the ELF backend linker. */
3222
b34976b6 3223bfd_boolean
217aa764
AM		 3224_bfd_elf_compute_section_file_positions (bfd *abfd,
3225 struct bfd_link_info *link_info)
252b5132 3226{
9c5bfbb7 3227 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
b34976b6 3228 bfd_boolean failed;
252b5132
RH		 3229 struct bfd_strtab_hash *strtab;
3230 Elf_Internal_Shdr *shstrtab_hdr;
3231
3232 if (abfd->output_has_begun)
b34976b6 3233 return TRUE;
252b5132
RH		 3234
3235 /* Do any elf backend specific processing first. */
3236 if (bed->elf_backend_begin_write_processing)
3237 (*bed->elf_backend_begin_write_processing) (abfd, link_info);
3238
3239 if (! prep_headers (abfd))
b34976b6 3240 return FALSE;
252b5132 3241
e6c51ed4
NC		 3242 /* Post process the headers if necessary. */
3243 if (bed->elf_backend_post_process_headers)
3244 (*bed->elf_backend_post_process_headers) (abfd, link_info);
3245
b34976b6 3246 failed = FALSE;
252b5132
RH		 3247 bfd_map_over_sections (abfd, elf_fake_sections, &failed);
3248 if (failed)
b34976b6 3249 return FALSE;
252b5132
RH		 3250
3251 if (!assign_section_numbers (abfd))
b34976b6 3252 return FALSE;
252b5132
RH		 3253
3254 /* The backend linker builds symbol table information itself. */
3255 if (link_info == NULL && bfd_get_symcount (abfd) > 0)
3256 {
3257 /* Non-zero if doing a relocatable link. */
3258 int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC));
3259
3260 if (! swap_out_syms (abfd, &strtab, relocatable_p))
b34976b6 3261 return FALSE;
252b5132
RH		 3262 }
3263
1126897b 3264 if (link_info == NULL)
dbb410c3 3265 {
1126897b 3266 bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed);
dbb410c3 3267 if (failed)
b34976b6 3268 return FALSE;
dbb410c3
AM		 3269 }
3270
252b5132
RH		 3271 shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr;
3272 /* sh_name was set in prep_headers. */
3273 shstrtab_hdr->sh_type = SHT_STRTAB;
3274 shstrtab_hdr->sh_flags = 0;
3275 shstrtab_hdr->sh_addr = 0;
2b0f7ef9 3276 shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd));
252b5132
RH		 3277 shstrtab_hdr->sh_entsize = 0;
3278 shstrtab_hdr->sh_link = 0;
3279 shstrtab_hdr->sh_info = 0;
3280 /* sh_offset is set in assign_file_positions_except_relocs. */
3281 shstrtab_hdr->sh_addralign = 1;
3282
c84fca4d 3283 if (!assign_file_positions_except_relocs (abfd, link_info))
b34976b6 3284 return FALSE;
252b5132
RH		 3285
3286 if (link_info == NULL && bfd_get_symcount (abfd) > 0)
3287 {
3288 file_ptr off;
3289 Elf_Internal_Shdr *hdr;
3290
3291 off = elf_tdata (abfd)->next_file_pos;
3292
3293 hdr = &elf_tdata (abfd)->symtab_hdr;
b34976b6 3294 off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
252b5132 3295
9ad5cbcf
AM		 3296 hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
3297 if (hdr->sh_size != 0)
b34976b6 3298 off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
9ad5cbcf 3299
252b5132 3300 hdr = &elf_tdata (abfd)->strtab_hdr;
b34976b6 3301 off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
252b5132
RH		 3302
3303 elf_tdata (abfd)->next_file_pos = off;
3304
3305 /* Now that we know where the .strtab section goes, write it
3306 out. */
3307 if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
3308 || ! _bfd_stringtab_emit (abfd, strtab))
b34976b6 3309 return FALSE;
252b5132
RH		 3310 _bfd_stringtab_free (strtab);
3311 }
3312
b34976b6 3313 abfd->output_has_begun = TRUE;
252b5132 3314
b34976b6 3315 return TRUE;
252b5132
RH		 3316}
3317
3318/* Create a mapping from a set of sections to a program segment. */
3319
217aa764
AM		 3320static struct elf_segment_map *
3321make_mapping (bfd *abfd,
3322 asection **sections,
3323 unsigned int from,
3324 unsigned int to,
3325 bfd_boolean phdr)
252b5132
RH		 3326{
3327 struct elf_segment_map *m;
3328 unsigned int i;
3329 asection **hdrpp;
dc810e39 3330 bfd_size_type amt;
252b5132 3331
dc810e39
AM		 3332 amt = sizeof (struct elf_segment_map);
3333 amt += (to - from - 1) * sizeof (asection *);
217aa764 3334 m = bfd_zalloc (abfd, amt);
252b5132
RH		 3335 if (m == NULL)
3336 return NULL;
3337 m->next = NULL;
3338 m->p_type = PT_LOAD;
3339 for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++)
3340 m->sections[i - from] = *hdrpp;
3341 m->count = to - from;
3342
3343 if (from == 0 && phdr)
3344 {
3345 /* Include the headers in the first PT_LOAD segment. */
3346 m->includes_filehdr = 1;
3347 m->includes_phdrs = 1;
3348 }
3349
3350 return m;
3351}
3352
229fcec5
MM		 3353/* Create the PT_DYNAMIC segment, which includes DYNSEC. Returns NULL
3354 on failure. */
3355
3356struct elf_segment_map *
3357_bfd_elf_make_dynamic_segment (bfd *abfd, asection *dynsec)
3358{
3359 struct elf_segment_map *m;
3360
3361 m = bfd_zalloc (abfd, sizeof (struct elf_segment_map));
3362 if (m == NULL)
3363 return NULL;
3364 m->next = NULL;
3365 m->p_type = PT_DYNAMIC;
3366 m->count = 1;
3367 m->sections[0] = dynsec;
3368
3369 return m;
3370}
3371
252b5132
RH		 3372/* Set up a mapping from BFD sections to program segments. */
3373
b34976b6 3374static bfd_boolean
217aa764 3375map_sections_to_segments (bfd *abfd)
252b5132
RH		 3376{
3377 asection **sections = NULL;
3378 asection *s;
3379 unsigned int i;
3380 unsigned int count;
3381 struct elf_segment_map *mfirst;
3382 struct elf_segment_map **pm;
3383 struct elf_segment_map *m;
3384 asection *last_hdr;
baaff79e 3385 bfd_vma last_size;
252b5132
RH		 3386 unsigned int phdr_index;
3387 bfd_vma maxpagesize;
3388 asection **hdrpp;
b34976b6
AM		 3389 bfd_boolean phdr_in_segment = TRUE;
3390 bfd_boolean writable;
13ae64f3
JJ		 3391 int tls_count = 0;
3392 asection *first_tls = NULL;
65765700 3393 asection *dynsec, *eh_frame_hdr;
dc810e39 3394 bfd_size_type amt;
252b5132
RH		 3395
3396 if (elf_tdata (abfd)->segment_map != NULL)
b34976b6 3397 return TRUE;
252b5132
RH		 3398
3399 if (bfd_count_sections (abfd) == 0)
b34976b6 3400 return TRUE;
252b5132
RH		 3401
3402 /* Select the allocated sections, and sort them. */
3403
dc810e39 3404 amt = bfd_count_sections (abfd) * sizeof (asection *);
217aa764 3405 sections = bfd_malloc (amt);
252b5132
RH		 3406 if (sections == NULL)
3407 goto error_return;
3408
3409 i = 0;
3410 for (s = abfd->sections; s != NULL; s = s->next)
3411 {
3412 if ((s->flags & SEC_ALLOC) != 0)
3413 {
3414 sections[i] = s;
3415 ++i;
3416 }
3417 }
3418 BFD_ASSERT (i <= bfd_count_sections (abfd));
3419 count = i;
3420
3421 qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections);
3422
3423 /* Build the mapping. */
3424
3425 mfirst = NULL;
3426 pm = &mfirst;
3427
3428 /* If we have a .interp section, then create a PT_PHDR segment for
3429 the program headers and a PT_INTERP segment for the .interp
3430 section. */
3431 s = bfd_get_section_by_name (abfd, ".interp");
3432 if (s != NULL && (s->flags & SEC_LOAD) != 0)
3433 {
dc810e39 3434 amt = sizeof (struct elf_segment_map);
217aa764 3435 m = bfd_zalloc (abfd, amt);
252b5132
RH		 3436 if (m == NULL)
3437 goto error_return;
3438 m->next = NULL;
3439 m->p_type = PT_PHDR;
3440 /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */
3441 m->p_flags = PF_R | PF_X;
3442 m->p_flags_valid = 1;
3443 m->includes_phdrs = 1;
3444
3445 *pm = m;
3446 pm = &m->next;
3447
dc810e39 3448 amt = sizeof (struct elf_segment_map);
217aa764 3449 m = bfd_zalloc (abfd, amt);
252b5132
RH		 3450 if (m == NULL)
3451 goto error_return;
3452 m->next = NULL;
3453 m->p_type = PT_INTERP;
3454 m->count = 1;
3455 m->sections[0] = s;
3456
3457 *pm = m;
3458 pm = &m->next;
3459 }
3460
3461 /* Look through the sections. We put sections in the same program
3462 segment when the start of the second section can be placed within
3463 a few bytes of the end of the first section. */
3464 last_hdr = NULL;
baaff79e 3465 last_size = 0;
252b5132
RH		 3466 phdr_index = 0;
3467 maxpagesize = get_elf_backend_data (abfd)->maxpagesize;
b34976b6 3468 writable = FALSE;
252b5132
RH		 3469 dynsec = bfd_get_section_by_name (abfd, ".dynamic");
3470 if (dynsec != NULL
3471 && (dynsec->flags & SEC_LOAD) == 0)
3472 dynsec = NULL;
3473
3474 /* Deal with -Ttext or something similar such that the first section
3475 is not adjacent to the program headers. This is an
3476 approximation, since at this point we don't know exactly how many
3477 program headers we will need. */
3478 if (count > 0)
3479 {
3480 bfd_size_type phdr_size;
3481
3482 phdr_size = elf_tdata (abfd)->program_header_size;
3483 if (phdr_size == 0)
3484 phdr_size = get_elf_backend_data (abfd)->s->sizeof_phdr;
3485 if ((abfd->flags & D_PAGED) == 0
3486 || sections[0]->lma < phdr_size
3487 || sections[0]->lma % maxpagesize < phdr_size % maxpagesize)
b34976b6 3488 phdr_in_segment = FALSE;
252b5132
RH		 3489 }
3490
3491 for (i = 0, hdrpp = sections; i < count; i++, hdrpp++)
3492 {
3493 asection *hdr;
b34976b6 3494 bfd_boolean new_segment;
252b5132
RH		 3495
3496 hdr = *hdrpp;
3497
3498 /* See if this section and the last one will fit in the same
3499 segment. */
3500
3501 if (last_hdr == NULL)
3502 {
3503 /* If we don't have a segment yet, then we don't need a new
3504 one (we build the last one after this loop). */
b34976b6 3505 new_segment = FALSE;
252b5132
RH		 3506 }
3507 else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma)
3508 {
3509 /* If this section has a different relation between the
3510 virtual address and the load address, then we need a new
3511 segment. */
b34976b6 3512 new_segment = TRUE;
252b5132 3513 }
baaff79e 3514 else if (BFD_ALIGN (last_hdr->lma + last_size, maxpagesize)
252b5132
RH		 3515 < BFD_ALIGN (hdr->lma, maxpagesize))
3516 {
3517 /* If putting this section in this segment would force us to
3518 skip a page in the segment, then we need a new segment. */
b34976b6 3519 new_segment = TRUE;
252b5132 3520 }
baaff79e
JJ		 3521 else if ((last_hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0
3522 && (hdr->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) != 0)
252b5132
RH		 3523 {
3524 /* We don't want to put a loadable section after a
baaff79e
JJ		 3525 nonloadable section in the same segment.
3526 Consider .tbss sections as loadable for this purpose. */
b34976b6 3527 new_segment = TRUE;
252b5132
RH		 3528 }
3529 else if ((abfd->flags & D_PAGED) == 0)
3530 {
3531 /* If the file is not demand paged, which means that we
3532 don't require the sections to be correctly aligned in the
3533 file, then there is no other reason for a new segment. */
b34976b6 3534 new_segment = FALSE;
252b5132
RH		 3535 }
3536 else if (! writable
3537 && (hdr->flags & SEC_READONLY) == 0
baaff79e 3538 && (((last_hdr->lma + last_size - 1)
b89fe0ee
AM		 3539 & ~(maxpagesize - 1))
3540 != (hdr->lma & ~(maxpagesize - 1))))
252b5132
RH		 3541 {
3542 /* We don't want to put a writable section in a read only
3543 segment, unless they are on the same page in memory
3544 anyhow. We already know that the last section does not
3545 bring us past the current section on the page, so the
3546 only case in which the new section is not on the same
3547 page as the previous section is when the previous section
3548 ends precisely on a page boundary. */
b34976b6 3549 new_segment = TRUE;
252b5132
RH		 3550 }
3551 else
3552 {
3553 /* Otherwise, we can use the same segment. */
b34976b6 3554 new_segment = FALSE;
252b5132
RH		 3555 }
3556
3557 if (! new_segment)
3558 {
3559 if ((hdr->flags & SEC_READONLY) == 0)
b34976b6 3560 writable = TRUE;
baaff79e
JJ		 3561 last_hdr = hdr;
3562 /* .tbss sections effectively have zero size. */
e5caec89 3563 if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL)
eea6121a 3564 last_size = hdr->size;
baaff79e
JJ		 3565 else
3566 last_size = 0;
252b5132
RH		 3567 continue;
3568 }
3569
3570 /* We need a new program segment. We must create a new program
3571 header holding all the sections from phdr_index until hdr. */
3572
3573 m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment);
3574 if (m == NULL)
3575 goto error_return;
3576
3577 *pm = m;
3578 pm = &m->next;
3579
3580 if ((hdr->flags & SEC_READONLY) == 0)
b34976b6 3581 writable = TRUE;
252b5132 3582 else
b34976b6 3583 writable = FALSE;
252b5132
RH		 3584
3585 last_hdr = hdr;
baaff79e
JJ		 3586 /* .tbss sections effectively have zero size. */
3587 if ((hdr->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) != SEC_THREAD_LOCAL)
eea6121a 3588 last_size = hdr->size;
baaff79e
JJ		 3589 else
3590 last_size = 0;
252b5132 3591 phdr_index = i;
b34976b6 3592 phdr_in_segment = FALSE;
252b5132
RH		 3593 }
3594
3595 /* Create a final PT_LOAD program segment. */
3596 if (last_hdr != NULL)
3597 {
3598 m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment);
3599 if (m == NULL)
3600 goto error_return;
3601
3602 *pm = m;
3603 pm = &m->next;
3604 }
3605
3606 /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */
3607 if (dynsec != NULL)
3608 {
229fcec5 3609 m = _bfd_elf_make_dynamic_segment (abfd, dynsec);
252b5132
RH		 3610 if (m == NULL)
3611 goto error_return;
252b5132
RH		 3612 *pm = m;
3613 pm = &m->next;
3614 }
3615
3616 /* For each loadable .note section, add a PT_NOTE segment. We don't
3617 use bfd_get_section_by_name, because if we link together
3618 nonloadable .note sections and loadable .note sections, we will
3619 generate two .note sections in the output file. FIXME: Using
3620 names for section types is bogus anyhow. */
3621 for (s = abfd->sections; s != NULL; s = s->next)
3622 {
3623 if ((s->flags & SEC_LOAD) != 0
3624 && strncmp (s->name, ".note", 5) == 0)
3625 {
dc810e39 3626 amt = sizeof (struct elf_segment_map);
217aa764 3627 m = bfd_zalloc (abfd, amt);
252b5132
RH		 3628 if (m == NULL)
3629 goto error_return;
3630 m->next = NULL;
3631 m->p_type = PT_NOTE;
3632 m->count = 1;
3633 m->sections[0] = s;
3634
3635 *pm = m;
3636 pm = &m->next;
3637 }
13ae64f3
JJ		 3638 if (s->flags & SEC_THREAD_LOCAL)
3639 {
3640 if (! tls_count)
3641 first_tls = s;
3642 tls_count++;
3643 }
3644 }
3645
3646 /* If there are any SHF_TLS output sections, add PT_TLS segment. */
3647 if (tls_count > 0)
3648 {
3649 int i;
3650
3651 amt = sizeof (struct elf_segment_map);
3652 amt += (tls_count - 1) * sizeof (asection *);
217aa764 3653 m = bfd_zalloc (abfd, amt);
13ae64f3
JJ		 3654 if (m == NULL)
3655 goto error_return;
3656 m->next = NULL;
3657 m->p_type = PT_TLS;
3658 m->count = tls_count;
3659 /* Mandated PF_R. */
3660 m->p_flags = PF_R;
3661 m->p_flags_valid = 1;
3662 for (i = 0; i < tls_count; ++i)
3663 {
3664 BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL);
3665 m->sections[i] = first_tls;
3666 first_tls = first_tls->next;
3667 }
3668
3669 *pm = m;
3670 pm = &m->next;
252b5132
RH		 3671 }
3672
65765700
JJ		 3673 /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME
3674 segment. */
126495ed
AM		 3675 eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr;
3676 if (eh_frame_hdr != NULL
3677 && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0)
65765700
JJ		 3678 {
3679 amt = sizeof (struct elf_segment_map);
217aa764 3680 m = bfd_zalloc (abfd, amt);
65765700
JJ		 3681 if (m == NULL)
3682 goto error_return;
3683 m->next = NULL;
3684 m->p_type = PT_GNU_EH_FRAME;
3685 m->count = 1;
126495ed 3686 m->sections[0] = eh_frame_hdr->output_section;
65765700
JJ		 3687
3688 *pm = m;
3689 pm = &m->next;
3690 }
3691
9ee5e499
JJ		 3692 if (elf_tdata (abfd)->stack_flags)
3693 {
3694 amt = sizeof (struct elf_segment_map);
217aa764 3695 m = bfd_zalloc (abfd, amt);
9ee5e499
JJ		 3696 if (m == NULL)
3697 goto error_return;
3698 m->next = NULL;
3699 m->p_type = PT_GNU_STACK;
3700 m->p_flags = elf_tdata (abfd)->stack_flags;
3701 m->p_flags_valid = 1;
3702
3703 *pm = m;
3704 pm = &m->next;
3705 }
3706
8c37241b
JJ		 3707 if (elf_tdata (abfd)->relro)
3708 {
3709 amt = sizeof (struct elf_segment_map);
3710 m = bfd_zalloc (abfd, amt);
3711 if (m == NULL)
3712 goto error_return;
3713 m->next = NULL;
3714 m->p_type = PT_GNU_RELRO;
3715 m->p_flags = PF_R;
3716 m->p_flags_valid = 1;
3717
3718 *pm = m;
3719 pm = &m->next;
3720 }
3721
252b5132
RH		 3722 free (sections);
3723 sections = NULL;
3724
3725 elf_tdata (abfd)->segment_map = mfirst;
b34976b6 3726 return TRUE;
252b5132
RH		 3727
3728 error_return:
3729 if (sections != NULL)
3730 free (sections);
b34976b6 3731 return FALSE;
252b5132
RH		 3732}
3733
3734/* Sort sections by address. */
3735
3736static int
217aa764 3737elf_sort_sections (const void *arg1, const void *arg2)
252b5132
RH		 3738{
3739 const asection *sec1 = *(const asection **) arg1;
3740 const asection *sec2 = *(const asection **) arg2;
eecdbe52 3741 bfd_size_type size1, size2;
252b5132
RH		 3742
3743 /* Sort by LMA first, since this is the address used to
3744 place the section into a segment. */
3745 if (sec1->lma < sec2->lma)
3746 return -1;
3747 else if (sec1->lma > sec2->lma)
3748 return 1;
3749
3750 /* Then sort by VMA. Normally the LMA and the VMA will be
3751 the same, and this will do nothing. */
3752 if (sec1->vma < sec2->vma)
3753 return -1;
3754 else if (sec1->vma > sec2->vma)
3755 return 1;
3756
3757 /* Put !SEC_LOAD sections after SEC_LOAD ones. */
3758
07c6e936 3759#define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0)
252b5132
RH		 3760
3761 if (TOEND (sec1))
3762 {
3763 if (TOEND (sec2))
00a7cdc5
NC		 3764 {
3765 /* If the indicies are the same, do not return 0
3766 here, but continue to try the next comparison. */
3767 if (sec1->target_index - sec2->target_index != 0)
3768 return sec1->target_index - sec2->target_index;
3769 }
252b5132
RH		 3770 else
3771 return 1;
3772 }
00a7cdc5 3773 else if (TOEND (sec2))
252b5132
RH		 3774 return -1;
3775
3776#undef TOEND
3777
00a7cdc5
NC		 3778 /* Sort by size, to put zero sized sections
3779 before others at the same address. */
252b5132 3780
eea6121a
AM		 3781 size1 = (sec1->flags & SEC_LOAD) ? sec1->size : 0;
3782 size2 = (sec2->flags & SEC_LOAD) ? sec2->size : 0;
eecdbe52
JJ		 3783
3784 if (size1 < size2)
252b5132 3785 return -1;
eecdbe52 3786 if (size1 > size2)
252b5132
RH		 3787 return 1;
3788
3789 return sec1->target_index - sec2->target_index;
3790}
3791
340b6d91
AC		 3792/* Ian Lance Taylor writes:
3793
3794 We shouldn't be using % with a negative signed number. That's just
3795 not good. We have to make sure either that the number is not
3796 negative, or that the number has an unsigned type. When the types
3797 are all the same size they wind up as unsigned. When file_ptr is a
3798 larger signed type, the arithmetic winds up as signed long long,
3799 which is wrong.
3800
3801 What we're trying to say here is something like ``increase OFF by
3802 the least amount that will cause it to be equal to the VMA modulo
3803 the page size.'' */
3804/* In other words, something like:
3805
3806 vma_offset = m->sections[0]->vma % bed->maxpagesize;
3807 off_offset = off % bed->maxpagesize;
3808 if (vma_offset < off_offset)
3809 adjustment = vma_offset + bed->maxpagesize - off_offset;
3810 else
3811 adjustment = vma_offset - off_offset;
3812
3813 which can can be collapsed into the expression below. */
3814
3815static file_ptr
3816vma_page_aligned_bias (bfd_vma vma, ufile_ptr off, bfd_vma maxpagesize)
3817{
3818 return ((vma - off) % maxpagesize);
3819}
3820
252b5132
RH		 3821/* Assign file positions to the sections based on the mapping from
3822 sections to segments. This function also sets up some fields in
3823 the file header, and writes out the program headers. */
3824
b34976b6 3825static bfd_boolean
c84fca4d 3826assign_file_positions_for_segments (bfd *abfd, struct bfd_link_info *link_info)
252b5132
RH		 3827{
3828 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3829 unsigned int count;
3830 struct elf_segment_map *m;
3831 unsigned int alloc;
3832 Elf_Internal_Phdr *phdrs;
3833 file_ptr off, voff;
3834 bfd_vma filehdr_vaddr, filehdr_paddr;
3835 bfd_vma phdrs_vaddr, phdrs_paddr;
3836 Elf_Internal_Phdr *p;
dc810e39 3837 bfd_size_type amt;
252b5132
RH		 3838
3839 if (elf_tdata (abfd)->segment_map == NULL)
3840 {
3841 if (! map_sections_to_segments (abfd))
b34976b6 3842 return FALSE;
252b5132 3843 }
1ed89aa9
NC		 3844 else
3845 {
3846 /* The placement algorithm assumes that non allocated sections are
3847 not in PT_LOAD segments. We ensure this here by removing such
3848 sections from the segment map. */
3849 for (m = elf_tdata (abfd)->segment_map;
3850 m != NULL;
3851 m = m->next)
3852 {
3853 unsigned int new_count;
3854 unsigned int i;
3855
3856 if (m->p_type != PT_LOAD)
3857 continue;
3858
3859 new_count = 0;
3860 for (i = 0; i < m->count; i ++)
3861 {
3862 if ((m->sections[i]->flags & SEC_ALLOC) != 0)
3863 {
47d9a591 3864 if (i != new_count)
1ed89aa9
NC		 3865 m->sections[new_count] = m->sections[i];
3866
3867 new_count ++;
3868 }
3869 }
3870
3871 if (new_count != m->count)
3872 m->count = new_count;
3873 }
3874 }
252b5132
RH		 3875
3876 if (bed->elf_backend_modify_segment_map)
3877 {
c84fca4d 3878 if (! (*bed->elf_backend_modify_segment_map) (abfd, link_info))
b34976b6 3879 return FALSE;
252b5132
RH		 3880 }
3881
3882 count = 0;
3883 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
3884 ++count;
3885
3886 elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr;
3887 elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr;
3888 elf_elfheader (abfd)->e_phnum = count;
3889
3890 if (count == 0)
0ebdbb83
BW		 3891 {
3892 elf_tdata (abfd)->next_file_pos = bed->s->sizeof_ehdr;
3893 return TRUE;
3894 }
252b5132
RH		 3895
3896 /* If we already counted the number of program segments, make sure
3897 that we allocated enough space. This happens when SIZEOF_HEADERS
3898 is used in a linker script. */
3899 alloc = elf_tdata (abfd)->program_header_size / bed->s->sizeof_phdr;
3900 if (alloc != 0 && count > alloc)
3901 {
3902 ((*_bfd_error_handler)
b301b248
AM		 3903 (_("%B: Not enough room for program headers (allocated %u, need %u)"),
3904 abfd, alloc, count));
252b5132 3905 bfd_set_error (bfd_error_bad_value);
b34976b6 3906 return FALSE;
252b5132
RH		 3907 }
3908
3909 if (alloc == 0)
3910 alloc = count;
3911
dc810e39 3912 amt = alloc * sizeof (Elf_Internal_Phdr);
217aa764 3913 phdrs = bfd_alloc (abfd, amt);
252b5132 3914 if (phdrs == NULL)
b34976b6 3915 return FALSE;
252b5132
RH		 3916
3917 off = bed->s->sizeof_ehdr;
3918 off += alloc * bed->s->sizeof_phdr;
3919
3920 filehdr_vaddr = 0;
3921 filehdr_paddr = 0;
3922 phdrs_vaddr = 0;
3923 phdrs_paddr = 0;
3924
3925 for (m = elf_tdata (abfd)->segment_map, p = phdrs;
3926 m != NULL;
3927 m = m->next, p++)
3928 {
3929 unsigned int i;
3930 asection **secpp;
3931
3932 /* If elf_segment_map is not from map_sections_to_segments, the
47d9a591 3933 sections may not be correctly ordered. NOTE: sorting should
52e9b619
MS		 3934 not be done to the PT_NOTE section of a corefile, which may
3935 contain several pseudo-sections artificially created by bfd.
3936 Sorting these pseudo-sections breaks things badly. */
47d9a591
AM		 3937 if (m->count > 1
3938 && !(elf_elfheader (abfd)->e_type == ET_CORE
52e9b619 3939 && m->p_type == PT_NOTE))
252b5132
RH		 3940 qsort (m->sections, (size_t) m->count, sizeof (asection *),
3941 elf_sort_sections);
3942
b301b248
AM		 3943 /* An ELF segment (described by Elf_Internal_Phdr) may contain a
3944 number of sections with contents contributing to both p_filesz
3945 and p_memsz, followed by a number of sections with no contents
3946 that just contribute to p_memsz. In this loop, OFF tracks next
3947 available file offset for PT_LOAD and PT_NOTE segments. VOFF is
3948 an adjustment we use for segments that have no file contents
3949 but need zero filled memory allocation. */
3950 voff = 0;
252b5132 3951 p->p_type = m->p_type;
28a7f3e7 3952 p->p_flags = m->p_flags;
252b5132
RH		 3953
3954 if (p->p_type == PT_LOAD
b301b248 3955 && m->count > 0)
252b5132 3956 {
b301b248
AM		 3957 bfd_size_type align;
3958 bfd_vma adjust;
3959
252b5132 3960 if ((abfd->flags & D_PAGED) != 0)
b301b248 3961 align = bed->maxpagesize;
252b5132
RH		 3962 else
3963 {
b301b248 3964 unsigned int align_power = 0;
252b5132
RH		 3965 for (i = 0, secpp = m->sections; i < m->count; i++, secpp++)
3966 {
b301b248 3967 unsigned int secalign;
252b5132
RH		 3968
3969 secalign = bfd_get_section_alignment (abfd, *secpp);
b301b248
AM		 3970 if (secalign > align_power)
3971 align_power = secalign;
252b5132 3972 }
b301b248
AM		 3973 align = (bfd_size_type) 1 << align_power;
3974 }
252b5132 3975
b301b248
AM		 3976 adjust = vma_page_aligned_bias (m->sections[0]->vma, off, align);
3977 off += adjust;
3978 if (adjust != 0
3979 && !m->includes_filehdr
3980 && !m->includes_phdrs
3981 && (ufile_ptr) off >= align)
3982 {
3983 /* If the first section isn't loadable, the same holds for
3984 any other sections. Since the segment won't need file
3985 space, we can make p_offset overlap some prior segment.
3986 However, .tbss is special. If a segment starts with
3987 .tbss, we need to look at the next section to decide
3988 whether the segment has any loadable sections. */
3989 i = 0;
5efb6261 3990 while ((m->sections[i]->flags & SEC_LOAD) == 0)
b301b248
AM		 3991 {
3992 if ((m->sections[i]->flags & SEC_THREAD_LOCAL) == 0
3993 || ++i >= m->count)
3994 {
3995 off -= adjust;
3996 voff = adjust - align;
3997 break;
3998 }
3999 }
252b5132
RH		 4000 }
4001 }
b1a6d0b1
NC		 4002 /* Make sure the .dynamic section is the first section in the
4003 PT_DYNAMIC segment. */
4004 else if (p->p_type == PT_DYNAMIC
4005 && m->count > 1
4006 && strcmp (m->sections[0]->name, ".dynamic") != 0)
4007 {
4008 _bfd_error_handler
b301b248
AM		 4009 (_("%B: The first section in the PT_DYNAMIC segment is not the .dynamic section"),
4010 abfd);
b1a6d0b1
NC		 4011 bfd_set_error (bfd_error_bad_value);
4012 return FALSE;
4013 }
252b5132
RH		 4014
4015 if (m->count == 0)
4016 p->p_vaddr = 0;
4017 else
4018 p->p_vaddr = m->sections[0]->vma;
4019
4020 if (m->p_paddr_valid)
4021 p->p_paddr = m->p_paddr;
4022 else if (m->count == 0)
4023 p->p_paddr = 0;
4024 else
4025 p->p_paddr = m->sections[0]->lma;
4026
4027 if (p->p_type == PT_LOAD
4028 && (abfd->flags & D_PAGED) != 0)
4029 p->p_align = bed->maxpagesize;
4030 else if (m->count == 0)
45d6a902 4031 p->p_align = 1 << bed->s->log_file_align;
252b5132
RH		 4032 else
4033 p->p_align = 0;
4034
4035 p->p_offset = 0;
4036 p->p_filesz = 0;
4037 p->p_memsz = 0;
4038
4039 if (m->includes_filehdr)
4040 {
4041 if (! m->p_flags_valid)
4042 p->p_flags |= PF_R;
4043 p->p_offset = 0;
4044 p->p_filesz = bed->s->sizeof_ehdr;
4045 p->p_memsz = bed->s->sizeof_ehdr;
4046 if (m->count > 0)
4047 {
4048 BFD_ASSERT (p->p_type == PT_LOAD);
4049
4050 if (p->p_vaddr < (bfd_vma) off)
4051 {
caf47ea6 4052 (*_bfd_error_handler)
b301b248
AM		 4053 (_("%B: Not enough room for program headers, try linking with -N"),
4054 abfd);
252b5132 4055 bfd_set_error (bfd_error_bad_value);
b34976b6 4056 return FALSE;
252b5132
RH		 4057 }
4058
4059 p->p_vaddr -= off;
4060 if (! m->p_paddr_valid)
4061 p->p_paddr -= off;
4062 }
4063 if (p->p_type == PT_LOAD)
4064 {
4065 filehdr_vaddr = p->p_vaddr;
4066 filehdr_paddr = p->p_paddr;
4067 }
4068 }
4069
4070 if (m->includes_phdrs)
4071 {
4072 if (! m->p_flags_valid)
4073 p->p_flags |= PF_R;
4074
4075 if (m->includes_filehdr)
4076 {
4077 if (p->p_type == PT_LOAD)
4078 {
4079 phdrs_vaddr = p->p_vaddr + bed->s->sizeof_ehdr;
4080 phdrs_paddr = p->p_paddr + bed->s->sizeof_ehdr;
4081 }
4082 }
4083 else
4084 {
4085 p->p_offset = bed->s->sizeof_ehdr;
4086
4087 if (m->count > 0)
4088 {
4089 BFD_ASSERT (p->p_type == PT_LOAD);
4090 p->p_vaddr -= off - p->p_offset;
4091 if (! m->p_paddr_valid)
4092 p->p_paddr -= off - p->p_offset;
4093 }
4094
4095 if (p->p_type == PT_LOAD)
4096 {
4097 phdrs_vaddr = p->p_vaddr;
4098 phdrs_paddr = p->p_paddr;
4099 }
4100 else
4101 phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr;
4102 }
4103
4104 p->p_filesz += alloc * bed->s->sizeof_phdr;
4105 p->p_memsz += alloc * bed->s->sizeof_phdr;
4106 }
4107
4108 if (p->p_type == PT_LOAD
4109 || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core))
4110 {
4111 if (! m->includes_filehdr && ! m->includes_phdrs)
b301b248 4112 p->p_offset = off + voff;
252b5132
RH		 4113 else
4114 {
4115 file_ptr adjust;
4116
4117 adjust = off - (p->p_offset + p->p_filesz);
4118 p->p_filesz += adjust;
4119 p->p_memsz += adjust;
4120 }
4121 }
4122
252b5132
RH		 4123 for (i = 0, secpp = m->sections; i < m->count; i++, secpp++)
4124 {
4125 asection *sec;
4126 flagword flags;
4127 bfd_size_type align;
4128
4129 sec = *secpp;
4130 flags = sec->flags;
4131 align = 1 << bfd_get_section_alignment (abfd, sec);
4132
b301b248
AM		 4133 if (p->p_type == PT_LOAD
4134 || p->p_type == PT_TLS)
252b5132
RH		 4135 {
4136 bfd_signed_vma adjust;
4137
5efb6261 4138 if ((flags & SEC_LOAD) != 0)
252b5132 4139 {
b301b248 4140 adjust = sec->lma - (p->p_paddr + p->p_filesz);
252b5132 4141 if (adjust < 0)
b301b248
AM		 4142 {
4143 (*_bfd_error_handler)
4144 (_("%B: section %A lma 0x%lx overlaps previous sections"),
4145 abfd, sec, (unsigned long) sec->lma);
4146 adjust = 0;
4147 }
4148 off += adjust;
4149 p->p_filesz += adjust;
4150 p->p_memsz += adjust;
252b5132 4151 }
b301b248
AM		 4152 /* .tbss is special. It doesn't contribute to p_memsz of
4153 normal segments. */
4154 else if ((flags & SEC_THREAD_LOCAL) == 0
4155 || p->p_type == PT_TLS)
252b5132
RH		 4156 {
4157 /* The section VMA must equal the file position
b301b248
AM		 4158 modulo the page size. */
4159 bfd_size_type page = align;
252b5132 4160 if ((abfd->flags & D_PAGED) != 0)
b301b248
AM		 4161 page = bed->maxpagesize;
4162 adjust = vma_page_aligned_bias (sec->vma,
4163 p->p_vaddr + p->p_memsz,
4164 page);
252b5132 4165 p->p_memsz += adjust;
252b5132 4166 }
252b5132
RH		 4167 }
4168
4169 if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)
4170 {
b301b248
AM		 4171 /* The section at i == 0 is the one that actually contains
4172 everything. */
4a938328
MS		 4173 if (i == 0)
4174 {
252b5132 4175 sec->filepos = off;
eea6121a 4176 off += sec->size;
b301b248
AM		 4177 p->p_filesz = sec->size;
4178 p->p_memsz = 0;
4179 p->p_align = 1;
252b5132 4180 }
4a938328 4181 else
252b5132 4182 {
b301b248 4183 /* The rest are fake sections that shouldn't be written. */
252b5132 4184 sec->filepos = 0;
eea6121a 4185 sec->size = 0;
b301b248
AM		 4186 sec->flags = 0;
4187 continue;
252b5132 4188 }
252b5132
RH		 4189 }
4190 else
4191 {
b301b248
AM		 4192 if (p->p_type == PT_LOAD)
4193 {
4194 sec->filepos = off;
5efb6261
AM		 4195 /* FIXME: The SEC_HAS_CONTENTS test here dates back to
4196 1997, and the exact reason for it isn't clear. One
4197 plausible explanation is that it is to work around
4198 a problem we have with linker scripts using data
4199 statements in NOLOAD sections. I don't think it
4200 makes a great deal of sense to have such a section
4201 assigned to a PT_LOAD segment, but apparently
4202 people do this. The data statement results in a
4203 bfd_data_link_order being built, and these need
4204 section contents to write into. Eventually, we get
4205 to _bfd_elf_write_object_contents which writes any
4206 section with contents to the output. Make room
4207 here for the write, so that following segments are
4208 not trashed. */
4209 if ((flags & SEC_LOAD) != 0
4210 || (flags & SEC_HAS_CONTENTS) != 0)
b301b248
AM		 4211 off += sec->size;
4212 }
252b5132 4213
5efb6261 4214 if ((flags & SEC_LOAD) != 0)
b301b248
AM		 4215 {
4216 p->p_filesz += sec->size;
4217 p->p_memsz += sec->size;
4218 }
4219 /* .tbss is special. It doesn't contribute to p_memsz of
4220 normal segments. */
4221 else if ((flags & SEC_THREAD_LOCAL) == 0
4222 || p->p_type == PT_TLS)
4223 p->p_memsz += sec->size;
252b5132 4224
13ae64f3 4225 if (p->p_type == PT_TLS
eea6121a 4226 && sec->size == 0
13ae64f3
JJ		 4227 && (sec->flags & SEC_HAS_CONTENTS) == 0)
4228 {
4229 struct bfd_link_order *o;
4230 bfd_vma tbss_size = 0;
4231
4232 for (o = sec->link_order_head; o != NULL; o = o->next)
4233 if (tbss_size < o->offset + o->size)
4234 tbss_size = o->offset + o->size;
4235
4236 p->p_memsz += tbss_size;
4237 }
4238
252b5132
RH		 4239 if (align > p->p_align
4240 && (p->p_type != PT_LOAD || (abfd->flags & D_PAGED) == 0))
4241 p->p_align = align;
4242 }
4243
4244 if (! m->p_flags_valid)
4245 {
4246 p->p_flags |= PF_R;
4247 if ((flags & SEC_CODE) != 0)
4248 p->p_flags |= PF_X;
4249 if ((flags & SEC_READONLY) == 0)
4250 p->p_flags |= PF_W;
4251 }
4252 }
4253 }
4254
4255 /* Now that we have set the section file positions, we can set up
4256 the file positions for the non PT_LOAD segments. */
4257 for (m = elf_tdata (abfd)->segment_map, p = phdrs;
4258 m != NULL;
4259 m = m->next, p++)
4260 {
4261 if (p->p_type != PT_LOAD && m->count > 0)
4262 {
4263 BFD_ASSERT (! m->includes_filehdr && ! m->includes_phdrs);
229fcec5
MM		 4264 /* If the section has not yet been assigned a file position,
4265 do so now. The ARM BPABI requires that .dynamic section
4266 not be marked SEC_ALLOC because it is not part of any
4267 PT_LOAD segment, so it will not be processed above. */
4268 if (p->p_type == PT_DYNAMIC && m->sections[0]->filepos == 0)
4269 {
4270 unsigned int i;
4271 Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd);
4272
4273 i = 1;
4274 while (i_shdrpp[i]->bfd_section != m->sections[0])
4275 ++i;
4276 off = (_bfd_elf_assign_file_position_for_section
4277 (i_shdrpp[i], off, TRUE));
4278 p->p_filesz = m->sections[0]->size;
4279 }
252b5132
RH		 4280 p->p_offset = m->sections[0]->filepos;
4281 }
4282 if (m->count == 0)
4283 {
4284 if (m->includes_filehdr)
4285 {
4286 p->p_vaddr = filehdr_vaddr;
4287 if (! m->p_paddr_valid)
4288 p->p_paddr = filehdr_paddr;
4289 }
4290 else if (m->includes_phdrs)
4291 {
4292 p->p_vaddr = phdrs_vaddr;
4293 if (! m->p_paddr_valid)
4294 p->p_paddr = phdrs_paddr;
4295 }
8c37241b
JJ		 4296 else if (p->p_type == PT_GNU_RELRO)
4297 {
4298 Elf_Internal_Phdr *lp;
4299
4300 for (lp = phdrs; lp < phdrs + count; ++lp)
4301 {
4302 if (lp->p_type == PT_LOAD
4303 && lp->p_vaddr <= link_info->relro_end
4304 && lp->p_vaddr >= link_info->relro_start
4305 && lp->p_vaddr + lp->p_filesz
4306 >= link_info->relro_end)
4307 break;
4308 }
4309
4310 if (lp < phdrs + count
4311 && link_info->relro_end > lp->p_vaddr)
4312 {
4313 p->p_vaddr = lp->p_vaddr;
4314 p->p_paddr = lp->p_paddr;
4315 p->p_offset = lp->p_offset;
4316 p->p_filesz = link_info->relro_end - lp->p_vaddr;
4317 p->p_memsz = p->p_filesz;
4318 p->p_align = 1;
4319 p->p_flags = (lp->p_flags & ~PF_W);
4320 }
4321 else
4322 {
4323 memset (p, 0, sizeof *p);
4324 p->p_type = PT_NULL;
4325 }
4326 }
252b5132
RH		 4327 }
4328 }
4329
4330 /* Clear out any program headers we allocated but did not use. */
4331 for (; count < alloc; count++, p++)
4332 {
4333 memset (p, 0, sizeof *p);
4334 p->p_type = PT_NULL;
4335 }
4336
4337 elf_tdata (abfd)->phdr = phdrs;
4338
4339 elf_tdata (abfd)->next_file_pos = off;
4340
4341 /* Write out the program headers. */
dc810e39 4342 if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0
252b5132 4343 || bed->s->write_out_phdrs (abfd, phdrs, alloc) != 0)
b34976b6 4344 return FALSE;
252b5132 4345
b34976b6 4346 return TRUE;
252b5132
RH		 4347}
4348
4349/* Get the size of the program header.
4350
4351 If this is called by the linker before any of the section VMA's are set, it
4352 can't calculate the correct value for a strange memory layout. This only
4353 happens when SIZEOF_HEADERS is used in a linker script. In this case,
4354 SORTED_HDRS is NULL and we assume the normal scenario of one text and one
4355 data segment (exclusive of .interp and .dynamic).
4356
4357 ??? User written scripts must either not use SIZEOF_HEADERS, or assume there
4358 will be two segments. */
4359
4360static bfd_size_type
217aa764 4361get_program_header_size (bfd *abfd)
252b5132
RH		 4362{
4363 size_t segs;
4364 asection *s;
9c5bfbb7 4365 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
252b5132
RH		 4366
4367 /* We can't return a different result each time we're called. */
4368 if (elf_tdata (abfd)->program_header_size != 0)
4369 return elf_tdata (abfd)->program_header_size;
4370
4371 if (elf_tdata (abfd)->segment_map != NULL)
4372 {
4373 struct elf_segment_map *m;
4374
4375 segs = 0;
4376 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
4377 ++segs;
4378 elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr;
4379 return elf_tdata (abfd)->program_header_size;
4380 }
4381
4382 /* Assume we will need exactly two PT_LOAD segments: one for text
4383 and one for data. */
4384 segs = 2;
4385
4386 s = bfd_get_section_by_name (abfd, ".interp");
4387 if (s != NULL && (s->flags & SEC_LOAD) != 0)
4388 {
4389 /* If we have a loadable interpreter section, we need a
4390 PT_INTERP segment. In this case, assume we also need a
ab3acfbe 4391 PT_PHDR segment, although that may not be true for all
252b5132
RH		 4392 targets. */
4393 segs += 2;
4394 }
4395
4396 if (bfd_get_section_by_name (abfd, ".dynamic") != NULL)
4397 {
4398 /* We need a PT_DYNAMIC segment. */
4399 ++segs;
4400 }
4401
126495ed 4402 if (elf_tdata (abfd)->eh_frame_hdr)
65765700
JJ		 4403 {
4404 /* We need a PT_GNU_EH_FRAME segment. */
4405 ++segs;
4406 }
4407
9ee5e499
JJ		 4408 if (elf_tdata (abfd)->stack_flags)
4409 {
4410 /* We need a PT_GNU_STACK segment. */
4411 ++segs;
4412 }
4413
8c37241b
JJ		 4414 if (elf_tdata (abfd)->relro)
4415 {
4416 /* We need a PT_GNU_RELRO segment. */
4417 ++segs;
4418 }
4419
252b5132
RH		 4420 for (s = abfd->sections; s != NULL; s = s->next)
4421 {
4422 if ((s->flags & SEC_LOAD) != 0
4423 && strncmp (s->name, ".note", 5) == 0)
4424 {
4425 /* We need a PT_NOTE segment. */
4426 ++segs;
4427 }
4428 }
4429
13ae64f3
JJ		 4430 for (s = abfd->sections; s != NULL; s = s->next)
4431 {
4432 if (s->flags & SEC_THREAD_LOCAL)
4433 {
4434 /* We need a PT_TLS segment. */
4435 ++segs;
4436 break;
4437 }
4438 }
4439
252b5132
RH		 4440 /* Let the backend count up any program headers it might need. */
4441 if (bed->elf_backend_additional_program_headers)
4442 {
4443 int a;
4444
4445 a = (*bed->elf_backend_additional_program_headers) (abfd);
4446 if (a == -1)
4447 abort ();
4448 segs += a;
4449 }
4450
4451 elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr;
4452 return elf_tdata (abfd)->program_header_size;
4453}
4454
4455/* Work out the file positions of all the sections. This is called by
4456 _bfd_elf_compute_section_file_positions. All the section sizes and
4457 VMAs must be known before this is called.
4458
e0638f70
AM		 4459 Reloc sections come in two flavours: Those processed specially as
4460 "side-channel" data attached to a section to which they apply, and
4461 those that bfd doesn't process as relocations. The latter sort are
4462 stored in a normal bfd section by bfd_section_from_shdr. We don't
4463 consider the former sort here, unless they form part of the loadable
4464 image. Reloc sections not assigned here will be handled later by
4465 assign_file_positions_for_relocs.
252b5132
RH		 4466
4467 We also don't set the positions of the .symtab and .strtab here. */
4468
b34976b6 4469static bfd_boolean
c84fca4d
AO		 4470assign_file_positions_except_relocs (bfd *abfd,
4471 struct bfd_link_info *link_info)
252b5132
RH		 4472{
4473 struct elf_obj_tdata * const tdata = elf_tdata (abfd);
4474 Elf_Internal_Ehdr * const i_ehdrp = elf_elfheader (abfd);
4475 Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd);
9ad5cbcf 4476 unsigned int num_sec = elf_numsections (abfd);
252b5132 4477 file_ptr off;
9c5bfbb7 4478 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
252b5132
RH		 4479
4480 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0
4481 && bfd_get_format (abfd) != bfd_core)
4482 {
4483 Elf_Internal_Shdr **hdrpp;
4484 unsigned int i;
4485
4486 /* Start after the ELF header. */
4487 off = i_ehdrp->e_ehsize;
4488
4489 /* We are not creating an executable, which means that we are
4490 not creating a program header, and that the actual order of
4491 the sections in the file is unimportant. */
9ad5cbcf 4492 for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++)
252b5132
RH		 4493 {
4494 Elf_Internal_Shdr *hdr;
4495
4496 hdr = *hdrpp;
e0638f70
AM		 4497 if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA)
4498 && hdr->bfd_section == NULL)
9ad5cbcf
AM		 4499 || i == tdata->symtab_section
4500 || i == tdata->symtab_shndx_section
252b5132
RH		 4501 || i == tdata->strtab_section)
4502 {
4503 hdr->sh_offset = -1;
252b5132 4504 }
9ad5cbcf 4505 else
b34976b6 4506 off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
252b5132 4507
9ad5cbcf
AM		 4508 if (i == SHN_LORESERVE - 1)
4509 {
4510 i += SHN_HIRESERVE + 1 - SHN_LORESERVE;
4511 hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE;
4512 }
252b5132
RH		 4513 }
4514 }
4515 else
4516 {
4517 unsigned int i;
4518 Elf_Internal_Shdr **hdrpp;
4519
4520 /* Assign file positions for the loaded sections based on the
4521 assignment of sections to segments. */
c84fca4d 4522 if (! assign_file_positions_for_segments (abfd, link_info))
b34976b6 4523 return FALSE;
252b5132
RH		 4524
4525 /* Assign file positions for the other sections. */
4526
4527 off = elf_tdata (abfd)->next_file_pos;
9ad5cbcf 4528 for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++)
252b5132
RH		 4529 {
4530 Elf_Internal_Shdr *hdr;
4531
4532 hdr = *hdrpp;
4533 if (hdr->bfd_section != NULL
4534 && hdr->bfd_section->filepos != 0)
4535 hdr->sh_offset = hdr->bfd_section->filepos;
4536 else if ((hdr->sh_flags & SHF_ALLOC) != 0)
4537 {
4538 ((*_bfd_error_handler)
b301b248
AM		 4539 (_("%B: warning: allocated section `%s' not in segment"),
4540 abfd,
252b5132
RH		 4541 (hdr->bfd_section == NULL
4542 ? "*unknown*"
4543 : hdr->bfd_section->name)));
4544 if ((abfd->flags & D_PAGED) != 0)
340b6d91
AC		 4545 off += vma_page_aligned_bias (hdr->sh_addr, off,
4546 bed->maxpagesize);
252b5132 4547 else
340b6d91
AC		 4548 off += vma_page_aligned_bias (hdr->sh_addr, off,
4549 hdr->sh_addralign);
252b5132 4550 off = _bfd_elf_assign_file_position_for_section (hdr, off,
b34976b6 4551 FALSE);
252b5132 4552 }
e0638f70
AM		 4553 else if (((hdr->sh_type == SHT_REL || hdr->sh_type == SHT_RELA)
4554 && hdr->bfd_section == NULL)
252b5132 4555 || hdr == i_shdrpp[tdata->symtab_section]
9ad5cbcf 4556 || hdr == i_shdrpp[tdata->symtab_shndx_section]
252b5132
RH		 4557 || hdr == i_shdrpp[tdata->strtab_section])
4558 hdr->sh_offset = -1;
4559 else
b34976b6 4560 off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
9ad5cbcf
AM		 4561
4562 if (i == SHN_LORESERVE - 1)
4563 {
4564 i += SHN_HIRESERVE + 1 - SHN_LORESERVE;
4565 hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE;
4566 }
252b5132
RH		 4567 }
4568 }
4569
4570 /* Place the section headers. */
45d6a902 4571 off = align_file_position (off, 1 << bed->s->log_file_align);
252b5132
RH		 4572 i_ehdrp->e_shoff = off;
4573 off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize;
4574
4575 elf_tdata (abfd)->next_file_pos = off;
4576
b34976b6 4577 return TRUE;
252b5132
RH		 4578}
4579
b34976b6 4580static bfd_boolean
217aa764 4581prep_headers (bfd *abfd)
252b5132
RH		 4582{
4583 Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
4584 Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */
4585 Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */
2b0f7ef9 4586 struct elf_strtab_hash *shstrtab;
9c5bfbb7 4587 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
252b5132
RH		 4588
4589 i_ehdrp = elf_elfheader (abfd);
4590 i_shdrp = elf_elfsections (abfd);
4591
2b0f7ef9 4592 shstrtab = _bfd_elf_strtab_init ();
252b5132 4593 if (shstrtab == NULL)
b34976b6 4594 return FALSE;
252b5132
RH		 4595
4596 elf_shstrtab (abfd) = shstrtab;
4597
4598 i_ehdrp->e_ident[EI_MAG0] = ELFMAG0;
4599 i_ehdrp->e_ident[EI_MAG1] = ELFMAG1;
4600 i_ehdrp->e_ident[EI_MAG2] = ELFMAG2;
4601 i_ehdrp->e_ident[EI_MAG3] = ELFMAG3;
4602
4603 i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass;
4604 i_ehdrp->e_ident[EI_DATA] =
4605 bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB;
4606 i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current;
4607
252b5132
RH		 4608 if ((abfd->flags & DYNAMIC) != 0)
4609 i_ehdrp->e_type = ET_DYN;
4610 else if ((abfd->flags & EXEC_P) != 0)
4611 i_ehdrp->e_type = ET_EXEC;
4612 else if (bfd_get_format (abfd) == bfd_core)
4613 i_ehdrp->e_type = ET_CORE;
4614 else
4615 i_ehdrp->e_type = ET_REL;
4616
4617 switch (bfd_get_arch (abfd))
4618 {
4619 case bfd_arch_unknown:
4620 i_ehdrp->e_machine = EM_NONE;
4621 break;
aa4f99bb
AO		 4622
4623 /* There used to be a long list of cases here, each one setting
4624 e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE
4625 in the corresponding bfd definition. To avoid duplication,
4626 the switch was removed. Machines that need special handling
4627 can generally do it in elf_backend_final_write_processing(),
4628 unless they need the information earlier than the final write.
4629 Such need can generally be supplied by replacing the tests for
4630 e_machine with the conditions used to determine it. */
252b5132 4631 default:
9c5bfbb7
AM		 4632 i_ehdrp->e_machine = bed->elf_machine_code;
4633 }
aa4f99bb 4634
252b5132
RH		 4635 i_ehdrp->e_version = bed->s->ev_current;
4636 i_ehdrp->e_ehsize = bed->s->sizeof_ehdr;
4637
c044fabd 4638 /* No program header, for now. */
252b5132
RH		 4639 i_ehdrp->e_phoff = 0;
4640 i_ehdrp->e_phentsize = 0;
4641 i_ehdrp->e_phnum = 0;
4642
c044fabd 4643 /* Each bfd section is section header entry. */
252b5132
RH		 4644 i_ehdrp->e_entry = bfd_get_start_address (abfd);
4645 i_ehdrp->e_shentsize = bed->s->sizeof_shdr;
4646
c044fabd 4647 /* If we're building an executable, we'll need a program header table. */
252b5132
RH		 4648 if (abfd->flags & EXEC_P)
4649 {
c044fabd 4650 /* It all happens later. */
252b5132
RH		 4651#if 0
4652 i_ehdrp->e_phentsize = sizeof (Elf_External_Phdr);
4653
4654 /* elf_build_phdrs() returns a (NULL-terminated) array of
c044fabd 4655 Elf_Internal_Phdrs. */
252b5132
RH		 4656 i_phdrp = elf_build_phdrs (abfd, i_ehdrp, i_shdrp, &i_ehdrp->e_phnum);
4657 i_ehdrp->e_phoff = outbase;
4658 outbase += i_ehdrp->e_phentsize * i_ehdrp->e_phnum;
4659#endif
4660 }
4661 else
4662 {
4663 i_ehdrp->e_phentsize = 0;
4664 i_phdrp = 0;
4665 i_ehdrp->e_phoff = 0;
4666 }
4667
4668 elf_tdata (abfd)->symtab_hdr.sh_name =
b34976b6 4669 (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE);
252b5132 4670 elf_tdata (abfd)->strtab_hdr.sh_name =
b34976b6 4671 (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE);
252b5132 4672 elf_tdata (abfd)->shstrtab_hdr.sh_name =
b34976b6 4673 (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE);
252b5132
RH		 4674 if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1
4675 || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1
4676 || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1)
b34976b6 4677 return FALSE;
252b5132 4678
b34976b6 4679 return TRUE;
252b5132
RH		 4680}
4681
4682/* Assign file positions for all the reloc sections which are not part
4683 of the loadable file image. */
4684
4685void
217aa764 4686_bfd_elf_assign_file_positions_for_relocs (bfd *abfd)
252b5132
RH		 4687{
4688 file_ptr off;
9ad5cbcf 4689 unsigned int i, num_sec;
252b5132
RH		 4690 Elf_Internal_Shdr **shdrpp;
4691
4692 off = elf_tdata (abfd)->next_file_pos;
4693
9ad5cbcf
AM		 4694 num_sec = elf_numsections (abfd);
4695 for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++)
252b5132
RH		 4696 {
4697 Elf_Internal_Shdr *shdrp;
4698
4699 shdrp = *shdrpp;
4700 if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA)
4701 && shdrp->sh_offset == -1)
b34976b6 4702 off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE);
252b5132
RH		 4703 }
4704
4705 elf_tdata (abfd)->next_file_pos = off;
4706}
4707
b34976b6 4708bfd_boolean
217aa764 4709_bfd_elf_write_object_contents (bfd *abfd)
252b5132 4710{
9c5bfbb7 4711 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
252b5132
RH		 4712 Elf_Internal_Ehdr *i_ehdrp;
4713 Elf_Internal_Shdr **i_shdrp;
b34976b6 4714 bfd_boolean failed;
9ad5cbcf 4715 unsigned int count, num_sec;
252b5132
RH		 4716
4717 if (! abfd->output_has_begun
217aa764 4718 && ! _bfd_elf_compute_section_file_positions (abfd, NULL))
b34976b6 4719 return FALSE;
252b5132
RH		 4720
4721 i_shdrp = elf_elfsections (abfd);
4722 i_ehdrp = elf_elfheader (abfd);
4723
b34976b6 4724 failed = FALSE;
252b5132
RH		 4725 bfd_map_over_sections (abfd, bed->s->write_relocs, &failed);
4726 if (failed)
b34976b6 4727 return FALSE;
252b5132
RH		 4728
4729 _bfd_elf_assign_file_positions_for_relocs (abfd);
4730
c044fabd 4731 /* After writing the headers, we need to write the sections too... */
9ad5cbcf
AM		 4732 num_sec = elf_numsections (abfd);
4733 for (count = 1; count < num_sec; count++)
252b5132
RH		 4734 {
4735 if (bed->elf_backend_section_processing)
4736 (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]);
4737 if (i_shdrp[count]->contents)
4738 {
dc810e39
AM		 4739 bfd_size_type amt = i_shdrp[count]->sh_size;
4740
252b5132 4741 if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0
dc810e39 4742 || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt)
b34976b6 4743 return FALSE;
252b5132 4744 }
9ad5cbcf
AM		 4745 if (count == SHN_LORESERVE - 1)
4746 count += SHN_HIRESERVE + 1 - SHN_LORESERVE;
252b5132
RH		 4747 }
4748
4749 /* Write out the section header names. */
4750 if (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0
2b0f7ef9 4751 || ! _bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd)))
b34976b6 4752 return FALSE;
252b5132
RH		 4753
4754 if (bed->elf_backend_final_write_processing)
4755 (*bed->elf_backend_final_write_processing) (abfd,
4756 elf_tdata (abfd)->linker);
4757
4758 return bed->s->write_shdrs_and_ehdr (abfd);
4759}
4760
b34976b6 4761bfd_boolean
217aa764 4762_bfd_elf_write_corefile_contents (bfd *abfd)
252b5132 4763{
c044fabd 4764 /* Hopefully this can be done just like an object file. */
252b5132
RH		 4765 return _bfd_elf_write_object_contents (abfd);
4766}
c044fabd
KH		 4767
4768/* Given a section, search the header to find them. */
4769
252b5132 4770int
198beae2 4771_bfd_elf_section_from_bfd_section (bfd *abfd, struct bfd_section *asect)
252b5132 4772{
9c5bfbb7 4773 const struct elf_backend_data *bed;
252b5132 4774 int index;
252b5132 4775
9ad5cbcf
AM		 4776 if (elf_section_data (asect) != NULL
4777 && elf_section_data (asect)->this_idx != 0)
4778 return elf_section_data (asect)->this_idx;
4779
4780 if (bfd_is_abs_section (asect))
af746e92
AM		 4781 index = SHN_ABS;
4782 else if (bfd_is_com_section (asect))
4783 index = SHN_COMMON;
4784 else if (bfd_is_und_section (asect))
4785 index = SHN_UNDEF;
4786 else
252b5132 4787 {
af746e92
AM		 4788 Elf_Internal_Shdr **i_shdrp = elf_elfsections (abfd);
4789 int maxindex = elf_numsections (abfd);
4790
4791 for (index = 1; index < maxindex; index++)
4792 {
4793 Elf_Internal_Shdr *hdr = i_shdrp[index];
4794
4795 if (hdr != NULL && hdr->bfd_section == asect)
4796 return index;
4797 }
4798 index = -1;
252b5132
RH		 4799 }
4800
af746e92 4801 bed = get_elf_backend_data (abfd);
252b5132
RH		 4802 if (bed->elf_backend_section_from_bfd_section)
4803 {
af746e92 4804 int retval = index;
9ad5cbcf 4805
af746e92
AM		 4806 if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval))
4807 return retval;
252b5132
RH		 4808 }
4809
af746e92
AM		 4810 if (index == -1)
4811 bfd_set_error (bfd_error_nonrepresentable_section);
252b5132 4812
af746e92 4813 return index;
252b5132
RH		 4814}
4815
4816/* Given a BFD symbol, return the index in the ELF symbol table, or -1
4817 on error. */
4818
4819int
217aa764 4820_bfd_elf_symbol_from_bfd_symbol (bfd *abfd, asymbol **asym_ptr_ptr)
252b5132
RH		 4821{
4822 asymbol *asym_ptr = *asym_ptr_ptr;
4823 int idx;
4824 flagword flags = asym_ptr->flags;
4825
4826 /* When gas creates relocations against local labels, it creates its
4827 own symbol for the section, but does put the symbol into the
4828 symbol chain, so udata is 0. When the linker is generating
4829 relocatable output, this section symbol may be for one of the
4830 input sections rather than the output section. */
4831 if (asym_ptr->udata.i == 0
4832 && (flags & BSF_SECTION_SYM)
4833 && asym_ptr->section)
4834 {
4835 int indx;
4836
4837 if (asym_ptr->section->output_section != NULL)
4838 indx = asym_ptr->section->output_section->index;
4839 else
4840 indx = asym_ptr->section->index;
4e89ac30
L		 4841 if (indx < elf_num_section_syms (abfd)
4842 && elf_section_syms (abfd)[indx] != NULL)
252b5132
RH		 4843 asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i;
4844 }
4845
4846 idx = asym_ptr->udata.i;
4847
4848 if (idx == 0)
4849 {
4850 /* This case can occur when using --strip-symbol on a symbol
4851 which is used in a relocation entry. */
4852 (*_bfd_error_handler)
d003868e
AM		 4853 (_("%B: symbol `%s' required but not present"),
4854 abfd, bfd_asymbol_name (asym_ptr));
252b5132
RH		 4855 bfd_set_error (bfd_error_no_symbols);
4856 return -1;
4857 }
4858
4859#if DEBUG & 4
4860 {
4861 fprintf (stderr,
661a3fd4 4862 "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n",
252b5132
RH		 4863 (long) asym_ptr, asym_ptr->name, idx, flags,
4864 elf_symbol_flags (flags));
4865 fflush (stderr);
4866 }
4867#endif
4868
4869 return idx;
4870}
4871
4872/* Copy private BFD data. This copies any program header information. */
4873
b34976b6 4874static bfd_boolean
217aa764 4875copy_private_bfd_data (bfd *ibfd, bfd *obfd)
252b5132 4876{
b34976b6
AM		 4877 Elf_Internal_Ehdr *iehdr;
4878 struct elf_segment_map *map;
4879 struct elf_segment_map *map_first;
4880 struct elf_segment_map **pointer_to_map;
4881 Elf_Internal_Phdr *segment;
4882 asection *section;
4883 unsigned int i;
4884 unsigned int num_segments;
4885 bfd_boolean phdr_included = FALSE;
4886 bfd_vma maxpagesize;
4887 struct elf_segment_map *phdr_adjust_seg = NULL;
4888 unsigned int phdr_adjust_num = 0;
9c5bfbb7 4889 const struct elf_backend_data *bed;
bc67d8a6 4890
c044fabd 4891 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
252b5132 4892 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 4893 return TRUE;
252b5132
RH		 4894
4895 if (elf_tdata (ibfd)->phdr == NULL)
b34976b6 4896 return TRUE;
252b5132 4897
caf47ea6 4898 bed = get_elf_backend_data (ibfd);
252b5132
RH		 4899 iehdr = elf_elfheader (ibfd);
4900
bc67d8a6 4901 map_first = NULL;
c044fabd 4902 pointer_to_map = &map_first;
252b5132
RH		 4903
4904 num_segments = elf_elfheader (ibfd)->e_phnum;
bc67d8a6
NC		 4905 maxpagesize = get_elf_backend_data (obfd)->maxpagesize;
4906
4907 /* Returns the end address of the segment + 1. */
aecc8f8a
AM		 4908#define SEGMENT_END(segment, start) \
4909 (start + (segment->p_memsz > segment->p_filesz \
4910 ? segment->p_memsz : segment->p_filesz))
bc67d8a6 4911
eecdbe52
JJ		 4912#define SECTION_SIZE(section, segment) \
4913 (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \
4914 != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \
eea6121a 4915 ? section->size : 0)
eecdbe52 4916
b34976b6 4917 /* Returns TRUE if the given section is contained within
bc67d8a6 4918 the given segment. VMA addresses are compared. */
aecc8f8a
AM		 4919#define IS_CONTAINED_BY_VMA(section, segment) \
4920 (section->vma >= segment->p_vaddr \
eecdbe52 4921 && (section->vma + SECTION_SIZE (section, segment) \
aecc8f8a 4922 <= (SEGMENT_END (segment, segment->p_vaddr))))
c044fabd 4923
b34976b6 4924 /* Returns TRUE if the given section is contained within
bc67d8a6 4925 the given segment. LMA addresses are compared. */
aecc8f8a
AM		 4926#define IS_CONTAINED_BY_LMA(section, segment, base) \
4927 (section->lma >= base \
eecdbe52 4928 && (section->lma + SECTION_SIZE (section, segment) \
aecc8f8a 4929 <= SEGMENT_END (segment, base)))
252b5132 4930
c044fabd 4931 /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */
aecc8f8a
AM		 4932#define IS_COREFILE_NOTE(p, s) \
4933 (p->p_type == PT_NOTE \
4934 && bfd_get_format (ibfd) == bfd_core \
4935 && s->vma == 0 && s->lma == 0 \
4936 && (bfd_vma) s->filepos >= p->p_offset \
eea6121a 4937 && ((bfd_vma) s->filepos + s->size \
aecc8f8a 4938 <= p->p_offset + p->p_filesz))
252b5132
RH		 4939
4940 /* The complicated case when p_vaddr is 0 is to handle the Solaris
4941 linker, which generates a PT_INTERP section with p_vaddr and
4942 p_memsz set to 0. */
aecc8f8a
AM		 4943#define IS_SOLARIS_PT_INTERP(p, s) \
4944 (p->p_vaddr == 0 \
4945 && p->p_paddr == 0 \
4946 && p->p_memsz == 0 \
4947 && p->p_filesz > 0 \
4948 && (s->flags & SEC_HAS_CONTENTS) != 0 \
eea6121a 4949 && s->size > 0 \
aecc8f8a 4950 && (bfd_vma) s->filepos >= p->p_offset \
eea6121a 4951 && ((bfd_vma) s->filepos + s->size \
aecc8f8a 4952 <= p->p_offset + p->p_filesz))
5c440b1e 4953
bc67d8a6
NC		 4954 /* Decide if the given section should be included in the given segment.
4955 A section will be included if:
f5ffc919
NC		 4956 1. It is within the address space of the segment -- we use the LMA
4957 if that is set for the segment and the VMA otherwise,
bc67d8a6
NC		 4958 2. It is an allocated segment,
4959 3. There is an output section associated with it,
eecdbe52 4960 4. The section has not already been allocated to a previous segment.
03394ac9
NC		 4961 5. PT_GNU_STACK segments do not include any sections.
4962 6. PT_TLS segment includes only SHF_TLS sections.
4963 7. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. */
caf47ea6 4964#define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \
aecc8f8a
AM		 4965 ((((segment->p_paddr \
4966 ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \
4967 : IS_CONTAINED_BY_VMA (section, segment)) \
f5ffc919 4968 && (section->flags & SEC_ALLOC) != 0) \
b6821651 4969 || IS_COREFILE_NOTE (segment, section)) \
f5ffc919 4970 && section->output_section != NULL \
03394ac9 4971 && segment->p_type != PT_GNU_STACK \
eecdbe52
JJ		 4972 && (segment->p_type != PT_TLS \
4973 || (section->flags & SEC_THREAD_LOCAL)) \
4974 && (segment->p_type == PT_LOAD \
4975 || segment->p_type == PT_TLS \
4976 || (section->flags & SEC_THREAD_LOCAL) == 0) \
82e51918 4977 && ! section->segment_mark)
bc67d8a6 4978
b34976b6 4979 /* Returns TRUE iff seg1 starts after the end of seg2. */
b5f852ea
NC		 4980#define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \
4981 (seg1->field >= SEGMENT_END (seg2, seg2->field))
4982
4983 /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both
4984 their VMA address ranges and their LMA address ranges overlap.
4985 It is possible to have overlapping VMA ranges without overlapping LMA
4986 ranges. RedBoot images for example can have both .data and .bss mapped
4987 to the same VMA range, but with the .data section mapped to a different
4988 LMA. */
aecc8f8a 4989#define SEGMENT_OVERLAPS(seg1, seg2) \
b5f852ea
NC		 4990 ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \
4991 || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \
4992 && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \
4993 || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr)))
bc67d8a6
NC		 4994
4995 /* Initialise the segment mark field. */
4996 for (section = ibfd->sections; section != NULL; section = section->next)
b34976b6 4997 section->segment_mark = FALSE;
bc67d8a6 4998
252b5132 4999 /* Scan through the segments specified in the program header
bc67d8a6 5000 of the input BFD. For this first scan we look for overlaps
9ad5cbcf 5001 in the loadable segments. These can be created by weird
aecc8f8a 5002 parameters to objcopy. Also, fix some solaris weirdness. */
bc67d8a6
NC		 5003 for (i = 0, segment = elf_tdata (ibfd)->phdr;
5004 i < num_segments;
c044fabd 5005 i++, segment++)
252b5132 5006 {
252b5132 5007 unsigned int j;
c044fabd 5008 Elf_Internal_Phdr *segment2;
252b5132 5009
aecc8f8a
AM		 5010 if (segment->p_type == PT_INTERP)
5011 for (section = ibfd->sections; section; section = section->next)
5012 if (IS_SOLARIS_PT_INTERP (segment, section))
5013 {
5014 /* Mininal change so that the normal section to segment
4cc11e76 5015 assignment code will work. */
aecc8f8a
AM		 5016 segment->p_vaddr = section->vma;
5017 break;
5018 }
5019
bc67d8a6
NC		 5020 if (segment->p_type != PT_LOAD)
5021 continue;
c044fabd 5022
bc67d8a6 5023 /* Determine if this segment overlaps any previous segments. */
c044fabd 5024 for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2 ++)
bc67d8a6
NC		 5025 {
5026 bfd_signed_vma extra_length;
c044fabd 5027
bc67d8a6
NC		 5028 if (segment2->p_type != PT_LOAD
5029 || ! SEGMENT_OVERLAPS (segment, segment2))
5030 continue;
c044fabd 5031
bc67d8a6
NC		 5032 /* Merge the two segments together. */
5033 if (segment2->p_vaddr < segment->p_vaddr)
5034 {
c044fabd
KH		 5035 /* Extend SEGMENT2 to include SEGMENT and then delete
5036 SEGMENT. */
bc67d8a6
NC		 5037 extra_length =
5038 SEGMENT_END (segment, segment->p_vaddr)
5039 - SEGMENT_END (segment2, segment2->p_vaddr);
c044fabd 5040
bc67d8a6
NC		 5041 if (extra_length > 0)
5042 {
5043 segment2->p_memsz += extra_length;
5044 segment2->p_filesz += extra_length;
5045 }
c044fabd 5046
bc67d8a6 5047 segment->p_type = PT_NULL;
c044fabd 5048
bc67d8a6
NC		 5049 /* Since we have deleted P we must restart the outer loop. */
5050 i = 0;
5051 segment = elf_tdata (ibfd)->phdr;
5052 break;
5053 }
5054 else
5055 {
c044fabd
KH		 5056 /* Extend SEGMENT to include SEGMENT2 and then delete
5057 SEGMENT2. */
bc67d8a6
NC		 5058 extra_length =
5059 SEGMENT_END (segment2, segment2->p_vaddr)
5060 - SEGMENT_END (segment, segment->p_vaddr);
c044fabd 5061
bc67d8a6
NC		 5062 if (extra_length > 0)
5063 {
5064 segment->p_memsz += extra_length;
5065 segment->p_filesz += extra_length;
5066 }
c044fabd 5067
bc67d8a6
NC		 5068 segment2->p_type = PT_NULL;
5069 }
5070 }
5071 }
c044fabd 5072
bc67d8a6
NC		 5073 /* The second scan attempts to assign sections to segments. */
5074 for (i = 0, segment = elf_tdata (ibfd)->phdr;
5075 i < num_segments;
5076 i ++, segment ++)
5077 {
5078 unsigned int section_count;
5079 asection ** sections;
5080 asection * output_section;
5081 unsigned int isec;
5082 bfd_vma matching_lma;
5083 bfd_vma suggested_lma;
5084 unsigned int j;
dc810e39 5085 bfd_size_type amt;
bc67d8a6
NC		 5086
5087 if (segment->p_type == PT_NULL)
5088 continue;
c044fabd 5089
bc67d8a6 5090 /* Compute how many sections might be placed into this segment. */
b5f852ea
NC		 5091 for (section = ibfd->sections, section_count = 0;
5092 section != NULL;
5093 section = section->next)
caf47ea6 5094 if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed))
c044fabd 5095 ++section_count;
811072d8 5096
b5f852ea
NC		 5097 /* Allocate a segment map big enough to contain
5098 all of the sections we have selected. */
dc810e39
AM		 5099 amt = sizeof (struct elf_segment_map);
5100 amt += ((bfd_size_type) section_count - 1) * sizeof (asection *);
217aa764 5101 map = bfd_alloc (obfd, amt);
bc67d8a6 5102 if (map == NULL)
b34976b6 5103 return FALSE;
252b5132
RH		 5104
5105 /* Initialise the fields of the segment map. Default to
5106 using the physical address of the segment in the input BFD. */
bc67d8a6
NC		 5107 map->next = NULL;
5108 map->p_type = segment->p_type;
5109 map->p_flags = segment->p_flags;
5110 map->p_flags_valid = 1;
5111 map->p_paddr = segment->p_paddr;
5112 map->p_paddr_valid = 1;
252b5132
RH		 5113
5114 /* Determine if this segment contains the ELF file header
5115 and if it contains the program headers themselves. */
bc67d8a6
NC		 5116 map->includes_filehdr = (segment->p_offset == 0
5117 && segment->p_filesz >= iehdr->e_ehsize);
252b5132 5118
bc67d8a6 5119 map->includes_phdrs = 0;
252b5132 5120
bc67d8a6 5121 if (! phdr_included || segment->p_type != PT_LOAD)
252b5132 5122 {
bc67d8a6
NC		 5123 map->includes_phdrs =
5124 (segment->p_offset <= (bfd_vma) iehdr->e_phoff
5125 && (segment->p_offset + segment->p_filesz
252b5132
RH		 5126 >= ((bfd_vma) iehdr->e_phoff
5127 + iehdr->e_phnum * iehdr->e_phentsize)));
c044fabd 5128
bc67d8a6 5129 if (segment->p_type == PT_LOAD && map->includes_phdrs)
b34976b6 5130 phdr_included = TRUE;
252b5132
RH		 5131 }
5132
bc67d8a6 5133 if (section_count == 0)
252b5132
RH		 5134 {
5135 /* Special segments, such as the PT_PHDR segment, may contain
5136 no sections, but ordinary, loadable segments should contain
1ed89aa9
NC		 5137 something. They are allowed by the ELF spec however, so only
5138 a warning is produced. */
bc67d8a6 5139 if (segment->p_type == PT_LOAD)
caf47ea6 5140 (*_bfd_error_handler)
d003868e
AM		 5141 (_("%B: warning: Empty loadable segment detected, is this intentional ?\n"),
5142 ibfd);
252b5132 5143
bc67d8a6 5144 map->count = 0;
c044fabd
KH		 5145 *pointer_to_map = map;
5146 pointer_to_map = &map->next;
252b5132
RH		 5147
5148 continue;
5149 }
5150
5151 /* Now scan the sections in the input BFD again and attempt
5152 to add their corresponding output sections to the segment map.
5153 The problem here is how to handle an output section which has
5154 been moved (ie had its LMA changed). There are four possibilities:
5155
5156 1. None of the sections have been moved.
5157 In this case we can continue to use the segment LMA from the
5158 input BFD.
5159
5160 2. All of the sections have been moved by the same amount.
5161 In this case we can change the segment's LMA to match the LMA
5162 of the first section.
5163
5164 3. Some of the sections have been moved, others have not.
5165 In this case those sections which have not been moved can be
5166 placed in the current segment which will have to have its size,
5167 and possibly its LMA changed, and a new segment or segments will
5168 have to be created to contain the other sections.
5169
b5f852ea 5170 4. The sections have been moved, but not by the same amount.
252b5132
RH		 5171 In this case we can change the segment's LMA to match the LMA
5172 of the first section and we will have to create a new segment
5173 or segments to contain the other sections.
5174
5175 In order to save time, we allocate an array to hold the section
5176 pointers that we are interested in. As these sections get assigned
5177 to a segment, they are removed from this array. */
5178
0b14c2aa
L		 5179 /* Gcc 2.96 miscompiles this code on mips. Don't do casting here
5180 to work around this long long bug. */
5181 amt = section_count * sizeof (asection *);
217aa764 5182 sections = bfd_malloc (amt);
252b5132 5183 if (sections == NULL)
b34976b6 5184 return FALSE;
252b5132
RH		 5185
5186 /* Step One: Scan for segment vs section LMA conflicts.
5187 Also add the sections to the section array allocated above.
5188 Also add the sections to the current segment. In the common
5189 case, where the sections have not been moved, this means that
5190 we have completely filled the segment, and there is nothing
5191 more to do. */
252b5132 5192 isec = 0;
72730e0c 5193 matching_lma = 0;
252b5132
RH		 5194 suggested_lma = 0;
5195
bc67d8a6
NC		 5196 for (j = 0, section = ibfd->sections;
5197 section != NULL;
5198 section = section->next)
252b5132 5199 {
caf47ea6 5200 if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed))
c0f7859b 5201 {
bc67d8a6
NC		 5202 output_section = section->output_section;
5203
5204 sections[j ++] = section;
252b5132
RH		 5205
5206 /* The Solaris native linker always sets p_paddr to 0.
5207 We try to catch that case here, and set it to the
5e8d7549
NC		 5208 correct value. Note - some backends require that
5209 p_paddr be left as zero. */
bc67d8a6 5210 if (segment->p_paddr == 0
4455705d 5211 && segment->p_vaddr != 0
5e8d7549 5212 && (! bed->want_p_paddr_set_to_zero)
252b5132 5213 && isec == 0
bc67d8a6
NC		 5214 && output_section->lma != 0
5215 && (output_section->vma == (segment->p_vaddr
5216 + (map->includes_filehdr
5217 ? iehdr->e_ehsize
5218 : 0)
5219 + (map->includes_phdrs
079e9a2f
AM		 5220 ? (iehdr->e_phnum
5221 * iehdr->e_phentsize)
bc67d8a6
NC		 5222 : 0))))
5223 map->p_paddr = segment->p_vaddr;
252b5132
RH		 5224
5225 /* Match up the physical address of the segment with the
5226 LMA address of the output section. */
bc67d8a6 5227 if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr)
5e8d7549
NC		 5228 || IS_COREFILE_NOTE (segment, section)
5229 || (bed->want_p_paddr_set_to_zero &&
5230 IS_CONTAINED_BY_VMA (output_section, segment))
5231 )
252b5132
RH		 5232 {
5233 if (matching_lma == 0)
bc67d8a6 5234 matching_lma = output_section->lma;
252b5132
RH		 5235
5236 /* We assume that if the section fits within the segment
bc67d8a6 5237 then it does not overlap any other section within that
252b5132 5238 segment. */
bc67d8a6 5239 map->sections[isec ++] = output_section;
252b5132
RH		 5240 }
5241 else if (suggested_lma == 0)
bc67d8a6 5242 suggested_lma = output_section->lma;
252b5132
RH		 5243 }
5244 }
5245
bc67d8a6 5246 BFD_ASSERT (j == section_count);
252b5132
RH		 5247
5248 /* Step Two: Adjust the physical address of the current segment,
5249 if necessary. */
bc67d8a6 5250 if (isec == section_count)
252b5132
RH		 5251 {
5252 /* All of the sections fitted within the segment as currently
5253 specified. This is the default case. Add the segment to
5254 the list of built segments and carry on to process the next
5255 program header in the input BFD. */
bc67d8a6 5256 map->count = section_count;
c044fabd
KH		 5257 *pointer_to_map = map;
5258 pointer_to_map = &map->next;
252b5132
RH		 5259
5260 free (sections);
5261 continue;
5262 }
252b5132
RH		 5263 else
5264 {
72730e0c
AM		 5265 if (matching_lma != 0)
5266 {
5267 /* At least one section fits inside the current segment.
5268 Keep it, but modify its physical address to match the
5269 LMA of the first section that fitted. */
bc67d8a6 5270 map->p_paddr = matching_lma;
72730e0c
AM		 5271 }
5272 else
5273 {
5274 /* None of the sections fitted inside the current segment.
5275 Change the current segment's physical address to match
5276 the LMA of the first section. */
bc67d8a6 5277 map->p_paddr = suggested_lma;
72730e0c
AM		 5278 }
5279
bc67d8a6
NC		 5280 /* Offset the segment physical address from the lma
5281 to allow for space taken up by elf headers. */
5282 if (map->includes_filehdr)
5283 map->p_paddr -= iehdr->e_ehsize;
252b5132 5284
bc67d8a6
NC		 5285 if (map->includes_phdrs)
5286 {
5287 map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize;
5288
5289 /* iehdr->e_phnum is just an estimate of the number
5290 of program headers that we will need. Make a note
5291 here of the number we used and the segment we chose
5292 to hold these headers, so that we can adjust the
5293 offset when we know the correct value. */
5294 phdr_adjust_num = iehdr->e_phnum;
5295 phdr_adjust_seg = map;
5296 }
252b5132
RH		 5297 }
5298
5299 /* Step Three: Loop over the sections again, this time assigning
caf47ea6 5300 those that fit to the current segment and removing them from the
252b5132
RH		 5301 sections array; but making sure not to leave large gaps. Once all
5302 possible sections have been assigned to the current segment it is
5303 added to the list of built segments and if sections still remain
5304 to be assigned, a new segment is constructed before repeating
5305 the loop. */
5306 isec = 0;
5307 do
5308 {
bc67d8a6 5309 map->count = 0;
252b5132
RH		 5310 suggested_lma = 0;
5311
5312 /* Fill the current segment with sections that fit. */
bc67d8a6 5313 for (j = 0; j < section_count; j++)
252b5132 5314 {
bc67d8a6 5315 section = sections[j];
252b5132 5316
bc67d8a6 5317 if (section == NULL)
252b5132
RH		 5318 continue;
5319
bc67d8a6 5320 output_section = section->output_section;
252b5132 5321
bc67d8a6 5322 BFD_ASSERT (output_section != NULL);
c044fabd 5323
bc67d8a6
NC		 5324 if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr)
5325 || IS_COREFILE_NOTE (segment, section))
252b5132 5326 {
bc67d8a6 5327 if (map->count == 0)
252b5132
RH		 5328 {
5329 /* If the first section in a segment does not start at
bc67d8a6
NC		 5330 the beginning of the segment, then something is
5331 wrong. */
5332 if (output_section->lma !=
5333 (map->p_paddr
5334 + (map->includes_filehdr ? iehdr->e_ehsize : 0)
5335 + (map->includes_phdrs
5336 ? iehdr->e_phnum * iehdr->e_phentsize
5337 : 0)))
252b5132
RH		 5338 abort ();
5339 }
5340 else
5341 {
5342 asection * prev_sec;
252b5132 5343
bc67d8a6 5344 prev_sec = map->sections[map->count - 1];
252b5132
RH		 5345
5346 /* If the gap between the end of the previous section
bc67d8a6
NC		 5347 and the start of this section is more than
5348 maxpagesize then we need to start a new segment. */
eea6121a 5349 if ((BFD_ALIGN (prev_sec->lma + prev_sec->size,
079e9a2f 5350 maxpagesize)
caf47ea6 5351 < BFD_ALIGN (output_section->lma, maxpagesize))
eea6121a 5352 || ((prev_sec->lma + prev_sec->size)
079e9a2f 5353 > output_section->lma))
252b5132
RH		 5354 {
5355 if (suggested_lma == 0)
bc67d8a6 5356 suggested_lma = output_section->lma;
252b5132
RH		 5357
5358 continue;
5359 }
5360 }
5361
bc67d8a6 5362 map->sections[map->count++] = output_section;
252b5132
RH		 5363 ++isec;
5364 sections[j] = NULL;
b34976b6 5365 section->segment_mark = TRUE;
252b5132
RH		 5366 }
5367 else if (suggested_lma == 0)
bc67d8a6 5368 suggested_lma = output_section->lma;
252b5132
RH		 5369 }
5370
bc67d8a6 5371 BFD_ASSERT (map->count > 0);
252b5132
RH		 5372
5373 /* Add the current segment to the list of built segments. */
c044fabd
KH		 5374 *pointer_to_map = map;
5375 pointer_to_map = &map->next;
252b5132 5376
bc67d8a6 5377 if (isec < section_count)
252b5132
RH		 5378 {
5379 /* We still have not allocated all of the sections to
5380 segments. Create a new segment here, initialise it
5381 and carry on looping. */
dc810e39
AM		 5382 amt = sizeof (struct elf_segment_map);
5383 amt += ((bfd_size_type) section_count - 1) * sizeof (asection *);
217aa764 5384 map = bfd_alloc (obfd, amt);
bc67d8a6 5385 if (map == NULL)
5ed6aba4
NC		 5386 {
5387 free (sections);
5388 return FALSE;
5389 }
252b5132
RH		 5390
5391 /* Initialise the fields of the segment map. Set the physical
5392 physical address to the LMA of the first section that has
5393 not yet been assigned. */
bc67d8a6
NC		 5394 map->next = NULL;
5395 map->p_type = segment->p_type;
5396 map->p_flags = segment->p_flags;
5397 map->p_flags_valid = 1;
5398 map->p_paddr = suggested_lma;
5399 map->p_paddr_valid = 1;
5400 map->includes_filehdr = 0;
5401 map->includes_phdrs = 0;
252b5132
RH		 5402 }
5403 }
bc67d8a6 5404 while (isec < section_count);
252b5132
RH		 5405
5406 free (sections);
5407 }
5408
5409 /* The Solaris linker creates program headers in which all the
5410 p_paddr fields are zero. When we try to objcopy or strip such a
5411 file, we get confused. Check for this case, and if we find it
5412 reset the p_paddr_valid fields. */
bc67d8a6
NC		 5413 for (map = map_first; map != NULL; map = map->next)
5414 if (map->p_paddr != 0)
252b5132 5415 break;
bc67d8a6 5416 if (map == NULL)
b5f852ea
NC		 5417 for (map = map_first; map != NULL; map = map->next)
5418 map->p_paddr_valid = 0;
252b5132 5419
bc67d8a6
NC		 5420 elf_tdata (obfd)->segment_map = map_first;
5421
5422 /* If we had to estimate the number of program headers that were
9ad5cbcf 5423 going to be needed, then check our estimate now and adjust
bc67d8a6
NC		 5424 the offset if necessary. */
5425 if (phdr_adjust_seg != NULL)
5426 {
5427 unsigned int count;
c044fabd 5428
bc67d8a6 5429 for (count = 0, map = map_first; map != NULL; map = map->next)
c044fabd 5430 count++;
252b5132 5431
bc67d8a6
NC		 5432 if (count > phdr_adjust_num)
5433 phdr_adjust_seg->p_paddr
5434 -= (count - phdr_adjust_num) * iehdr->e_phentsize;
5435 }
c044fabd 5436
252b5132 5437#if 0
c044fabd
KH		 5438 /* Final Step: Sort the segments into ascending order of physical
5439 address. */
bc67d8a6 5440 if (map_first != NULL)
252b5132 5441 {
c044fabd 5442 struct elf_segment_map *prev;
252b5132 5443
bc67d8a6
NC		 5444 prev = map_first;
5445 for (map = map_first->next; map != NULL; prev = map, map = map->next)
252b5132 5446 {
bc67d8a6
NC		 5447 /* Yes I know - its a bubble sort.... */
5448 if (map->next != NULL && (map->next->p_paddr < map->p_paddr))
252b5132 5449 {
bc67d8a6
NC		 5450 /* Swap map and map->next. */
5451 prev->next = map->next;
5452 map->next = map->next->next;
5453 prev->next->next = map;
252b5132 5454
bc67d8a6
NC		 5455 /* Restart loop. */
5456 map = map_first;
252b5132
RH		 5457 }
5458 }
5459 }
5460#endif
5461
bc67d8a6 5462#undef SEGMENT_END
eecdbe52 5463#undef SECTION_SIZE
bc67d8a6
NC		 5464#undef IS_CONTAINED_BY_VMA
5465#undef IS_CONTAINED_BY_LMA
252b5132 5466#undef IS_COREFILE_NOTE
bc67d8a6
NC		 5467#undef IS_SOLARIS_PT_INTERP
5468#undef INCLUDE_SECTION_IN_SEGMENT
5469#undef SEGMENT_AFTER_SEGMENT
5470#undef SEGMENT_OVERLAPS
b34976b6 5471 return TRUE;
252b5132
RH		 5472}
5473
5474/* Copy private section information. This copies over the entsize
5475 field, and sometimes the info field. */
5476
b34976b6 5477bfd_boolean
217aa764
AM		 5478_bfd_elf_copy_private_section_data (bfd *ibfd,
5479 asection *isec,
5480 bfd *obfd,
5481 asection *osec)
252b5132
RH		 5482{
5483 Elf_Internal_Shdr *ihdr, *ohdr;
5484
5485 if (ibfd->xvec->flavour != bfd_target_elf_flavour
5486 || obfd->xvec->flavour != bfd_target_elf_flavour)
b34976b6 5487 return TRUE;
252b5132 5488
252b5132
RH		 5489 ihdr = &elf_section_data (isec)->this_hdr;
5490 ohdr = &elf_section_data (osec)->this_hdr;
5491
5492 ohdr->sh_entsize = ihdr->sh_entsize;
5493
5494 if (ihdr->sh_type == SHT_SYMTAB
5495 || ihdr->sh_type == SHT_DYNSYM
5496 || ihdr->sh_type == SHT_GNU_verneed
5497 || ihdr->sh_type == SHT_GNU_verdef)
5498 ohdr->sh_info = ihdr->sh_info;
5499
9dce4196
AM		 5500 /* Set things up for objcopy. The output SHT_GROUP section will
5501 have its elf_next_in_group pointing back to the input group
5502 members. */
5503 elf_next_in_group (osec) = elf_next_in_group (isec);
5504 elf_group_name (osec) = elf_group_name (isec);
5505
68bfbfcc 5506 osec->use_rela_p = isec->use_rela_p;
bf572ba0 5507
b34976b6 5508 return TRUE;
252b5132
RH		 5509}
5510
80fccad2
BW		 5511/* Copy private header information. */
5512
5513bfd_boolean
5514_bfd_elf_copy_private_header_data (bfd *ibfd, bfd *obfd)
5515{
5516 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
5517 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
5518 return TRUE;
5519
5520 /* Copy over private BFD data if it has not already been copied.
5521 This must be done here, rather than in the copy_private_bfd_data
5522 entry point, because the latter is called after the section
5523 contents have been set, which means that the program headers have
5524 already been worked out. */
5525 if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL)
5526 {
5527 if (! copy_private_bfd_data (ibfd, obfd))
5528 return FALSE;
5529 }
5530
5531 return TRUE;
5532}
5533
252b5132
RH		 5534/* Copy private symbol information. If this symbol is in a section
5535 which we did not map into a BFD section, try to map the section
5536 index correctly. We use special macro definitions for the mapped
5537 section indices; these definitions are interpreted by the
5538 swap_out_syms function. */
5539
9ad5cbcf
AM		 5540#define MAP_ONESYMTAB (SHN_HIOS + 1)
5541#define MAP_DYNSYMTAB (SHN_HIOS + 2)
5542#define MAP_STRTAB (SHN_HIOS + 3)
5543#define MAP_SHSTRTAB (SHN_HIOS + 4)
5544#define MAP_SYM_SHNDX (SHN_HIOS + 5)
252b5132 5545
b34976b6 5546bfd_boolean
217aa764
AM		 5547_bfd_elf_copy_private_symbol_data (bfd *ibfd,
5548 asymbol *isymarg,
5549 bfd *obfd,
5550 asymbol *osymarg)
252b5132
RH		 5551{
5552 elf_symbol_type *isym, *osym;
5553
5554 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
5555 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 5556 return TRUE;
252b5132
RH		 5557
5558 isym = elf_symbol_from (ibfd, isymarg);
5559 osym = elf_symbol_from (obfd, osymarg);
5560
5561 if (isym != NULL
5562 && osym != NULL
5563 && bfd_is_abs_section (isym->symbol.section))
5564 {
5565 unsigned int shndx;
5566
5567 shndx = isym->internal_elf_sym.st_shndx;
5568 if (shndx == elf_onesymtab (ibfd))
5569 shndx = MAP_ONESYMTAB;
5570 else if (shndx == elf_dynsymtab (ibfd))
5571 shndx = MAP_DYNSYMTAB;
5572 else if (shndx == elf_tdata (ibfd)->strtab_section)
5573 shndx = MAP_STRTAB;
5574 else if (shndx == elf_tdata (ibfd)->shstrtab_section)
5575 shndx = MAP_SHSTRTAB;
9ad5cbcf
AM		 5576 else if (shndx == elf_tdata (ibfd)->symtab_shndx_section)
5577 shndx = MAP_SYM_SHNDX;
252b5132
RH		 5578 osym->internal_elf_sym.st_shndx = shndx;
5579 }
5580
b34976b6 5581 return TRUE;
252b5132
RH		 5582}
5583
5584/* Swap out the symbols. */
5585
b34976b6 5586static bfd_boolean
217aa764
AM		 5587swap_out_syms (bfd *abfd,
5588 struct bfd_strtab_hash **sttp,
5589 int relocatable_p)
252b5132 5590{
9c5bfbb7 5591 const struct elf_backend_data *bed;
079e9a2f
AM		 5592 int symcount;
5593 asymbol **syms;
5594 struct bfd_strtab_hash *stt;
5595 Elf_Internal_Shdr *symtab_hdr;
9ad5cbcf 5596 Elf_Internal_Shdr *symtab_shndx_hdr;
079e9a2f
AM		 5597 Elf_Internal_Shdr *symstrtab_hdr;
5598 char *outbound_syms;
9ad5cbcf 5599 char *outbound_shndx;
079e9a2f
AM		 5600 int idx;
5601 bfd_size_type amt;
174fd7f9 5602 bfd_boolean name_local_sections;
252b5132
RH		 5603
5604 if (!elf_map_symbols (abfd))
b34976b6 5605 return FALSE;
252b5132 5606
c044fabd 5607 /* Dump out the symtabs. */
079e9a2f
AM		 5608 stt = _bfd_elf_stringtab_init ();
5609 if (stt == NULL)
b34976b6 5610 return FALSE;
252b5132 5611
079e9a2f
AM		 5612 bed = get_elf_backend_data (abfd);
5613 symcount = bfd_get_symcount (abfd);
5614 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5615 symtab_hdr->sh_type = SHT_SYMTAB;
5616 symtab_hdr->sh_entsize = bed->s->sizeof_sym;
5617 symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1);
5618 symtab_hdr->sh_info = elf_num_locals (abfd) + 1;
45d6a902 5619 symtab_hdr->sh_addralign = 1 << bed->s->log_file_align;
079e9a2f
AM		 5620
5621 symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr;
5622 symstrtab_hdr->sh_type = SHT_STRTAB;
5623
5624 amt = (bfd_size_type) (1 + symcount) * bed->s->sizeof_sym;
5625 outbound_syms = bfd_alloc (abfd, amt);
5626 if (outbound_syms == NULL)
5ed6aba4
NC		 5627 {
5628 _bfd_stringtab_free (stt);
5629 return FALSE;
5630 }
217aa764 5631 symtab_hdr->contents = outbound_syms;
252b5132 5632
9ad5cbcf
AM		 5633 outbound_shndx = NULL;
5634 symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
5635 if (symtab_shndx_hdr->sh_name != 0)
5636 {
5637 amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx);
1126897b 5638 outbound_shndx = bfd_zalloc (abfd, amt);
9ad5cbcf 5639 if (outbound_shndx == NULL)
5ed6aba4
NC		 5640 {
5641 _bfd_stringtab_free (stt);
5642 return FALSE;
5643 }
5644
9ad5cbcf
AM		 5645 symtab_shndx_hdr->contents = outbound_shndx;
5646 symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX;
5647 symtab_shndx_hdr->sh_size = amt;
5648 symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx);
5649 symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx);
5650 }
5651
589e6347 5652 /* Now generate the data (for "contents"). */
079e9a2f
AM		 5653 {
5654 /* Fill in zeroth symbol and swap it out. */
5655 Elf_Internal_Sym sym;
5656 sym.st_name = 0;
5657 sym.st_value = 0;
5658 sym.st_size = 0;
5659 sym.st_info = 0;
5660 sym.st_other = 0;
5661 sym.st_shndx = SHN_UNDEF;
9ad5cbcf 5662 bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx);
079e9a2f 5663 outbound_syms += bed->s->sizeof_sym;
9ad5cbcf
AM		 5664 if (outbound_shndx != NULL)
5665 outbound_shndx += sizeof (Elf_External_Sym_Shndx);
079e9a2f 5666 }
252b5132 5667
174fd7f9
RS		 5668 name_local_sections
5669 = (bed->elf_backend_name_local_section_symbols
5670 && bed->elf_backend_name_local_section_symbols (abfd));
5671
079e9a2f
AM		 5672 syms = bfd_get_outsymbols (abfd);
5673 for (idx = 0; idx < symcount; idx++)
252b5132 5674 {
252b5132 5675 Elf_Internal_Sym sym;
079e9a2f
AM		 5676 bfd_vma value = syms[idx]->value;
5677 elf_symbol_type *type_ptr;
5678 flagword flags = syms[idx]->flags;
5679 int type;
252b5132 5680
174fd7f9
RS		 5681 if (!name_local_sections
5682 && (flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM)
079e9a2f
AM		 5683 {
5684 /* Local section symbols have no name. */
5685 sym.st_name = 0;
5686 }
5687 else
5688 {
5689 sym.st_name = (unsigned long) _bfd_stringtab_add (stt,
5690 syms[idx]->name,
b34976b6 5691 TRUE, FALSE);
079e9a2f 5692 if (sym.st_name == (unsigned long) -1)
5ed6aba4
NC		 5693 {
5694 _bfd_stringtab_free (stt);
5695 return FALSE;
5696 }
079e9a2f 5697 }
252b5132 5698
079e9a2f 5699 type_ptr = elf_symbol_from (abfd, syms[idx]);
252b5132 5700
079e9a2f
AM		 5701 if ((flags & BSF_SECTION_SYM) == 0
5702 && bfd_is_com_section (syms[idx]->section))
5703 {
5704 /* ELF common symbols put the alignment into the `value' field,
5705 and the size into the `size' field. This is backwards from
5706 how BFD handles it, so reverse it here. */
5707 sym.st_size = value;
5708 if (type_ptr == NULL
5709 || type_ptr->internal_elf_sym.st_value == 0)
5710 sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value));
5711 else
5712 sym.st_value = type_ptr->internal_elf_sym.st_value;
5713 sym.st_shndx = _bfd_elf_section_from_bfd_section
5714 (abfd, syms[idx]->section);
5715 }
5716 else
5717 {
5718 asection *sec = syms[idx]->section;
5719 int shndx;
252b5132 5720
079e9a2f
AM		 5721 if (sec->output_section)
5722 {
5723 value += sec->output_offset;
5724 sec = sec->output_section;
5725 }
589e6347 5726
079e9a2f
AM		 5727 /* Don't add in the section vma for relocatable output. */
5728 if (! relocatable_p)
5729 value += sec->vma;
5730 sym.st_value = value;
5731 sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0;
5732
5733 if (bfd_is_abs_section (sec)
5734 && type_ptr != NULL
5735 && type_ptr->internal_elf_sym.st_shndx != 0)
5736 {
5737 /* This symbol is in a real ELF section which we did
5738 not create as a BFD section. Undo the mapping done
5739 by copy_private_symbol_data. */
5740 shndx = type_ptr->internal_elf_sym.st_shndx;
5741 switch (shndx)
5742 {
5743 case MAP_ONESYMTAB:
5744 shndx = elf_onesymtab (abfd);
5745 break;
5746 case MAP_DYNSYMTAB:
5747 shndx = elf_dynsymtab (abfd);
5748 break;
5749 case MAP_STRTAB:
5750 shndx = elf_tdata (abfd)->strtab_section;
5751 break;
5752 case MAP_SHSTRTAB:
5753 shndx = elf_tdata (abfd)->shstrtab_section;
5754 break;
9ad5cbcf
AM		 5755 case MAP_SYM_SHNDX:
5756 shndx = elf_tdata (abfd)->symtab_shndx_section;
5757 break;
079e9a2f
AM		 5758 default:
5759 break;
5760 }
5761 }
5762 else
5763 {
5764 shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
252b5132 5765
079e9a2f
AM		 5766 if (shndx == -1)
5767 {
5768 asection *sec2;
5769
5770 /* Writing this would be a hell of a lot easier if
5771 we had some decent documentation on bfd, and
5772 knew what to expect of the library, and what to
5773 demand of applications. For example, it
5774 appears that `objcopy' might not set the
5775 section of a symbol to be a section that is
5776 actually in the output file. */
5777 sec2 = bfd_get_section_by_name (abfd, sec->name);
589e6347
NC		 5778 if (sec2 == NULL)
5779 {
5780 _bfd_error_handler (_("\
5781Unable to find equivalent output section for symbol '%s' from section '%s'"),
5782 syms[idx]->name ? syms[idx]->name : "<Local sym>",
5783 sec->name);
811072d8 5784 bfd_set_error (bfd_error_invalid_operation);
5ed6aba4 5785 _bfd_stringtab_free (stt);
589e6347
NC		 5786 return FALSE;
5787 }
811072d8 5788
079e9a2f
AM		 5789 shndx = _bfd_elf_section_from_bfd_section (abfd, sec2);
5790 BFD_ASSERT (shndx != -1);
5791 }
5792 }
252b5132 5793
079e9a2f
AM		 5794 sym.st_shndx = shndx;
5795 }
252b5132 5796
13ae64f3
JJ		 5797 if ((flags & BSF_THREAD_LOCAL) != 0)
5798 type = STT_TLS;
5799 else if ((flags & BSF_FUNCTION) != 0)
079e9a2f
AM		 5800 type = STT_FUNC;
5801 else if ((flags & BSF_OBJECT) != 0)
5802 type = STT_OBJECT;
5803 else
5804 type = STT_NOTYPE;
252b5132 5805
13ae64f3
JJ		 5806 if (syms[idx]->section->flags & SEC_THREAD_LOCAL)
5807 type = STT_TLS;
5808
589e6347 5809 /* Processor-specific types. */
079e9a2f
AM		 5810 if (type_ptr != NULL
5811 && bed->elf_backend_get_symbol_type)
5812 type = ((*bed->elf_backend_get_symbol_type)
5813 (&type_ptr->internal_elf_sym, type));
252b5132 5814
079e9a2f
AM		 5815 if (flags & BSF_SECTION_SYM)
5816 {
5817 if (flags & BSF_GLOBAL)
5818 sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
5819 else
5820 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
5821 }
5822 else if (bfd_is_com_section (syms[idx]->section))
5823 sym.st_info = ELF_ST_INFO (STB_GLOBAL, type);
5824 else if (bfd_is_und_section (syms[idx]->section))
5825 sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK)
5826 ? STB_WEAK
5827 : STB_GLOBAL),
5828 type);
5829 else if (flags & BSF_FILE)
5830 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE);
5831 else
5832 {
5833 int bind = STB_LOCAL;
252b5132 5834
079e9a2f
AM		 5835 if (flags & BSF_LOCAL)
5836 bind = STB_LOCAL;
5837 else if (flags & BSF_WEAK)
5838 bind = STB_WEAK;
5839 else if (flags & BSF_GLOBAL)
5840 bind = STB_GLOBAL;
252b5132 5841
079e9a2f
AM		 5842 sym.st_info = ELF_ST_INFO (bind, type);
5843 }
252b5132 5844
079e9a2f
AM		 5845 if (type_ptr != NULL)
5846 sym.st_other = type_ptr->internal_elf_sym.st_other;
5847 else
5848 sym.st_other = 0;
252b5132 5849
9ad5cbcf 5850 bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx);
079e9a2f 5851 outbound_syms += bed->s->sizeof_sym;
9ad5cbcf
AM		 5852 if (outbound_shndx != NULL)
5853 outbound_shndx += sizeof (Elf_External_Sym_Shndx);
079e9a2f 5854 }
252b5132 5855
079e9a2f
AM		 5856 *sttp = stt;
5857 symstrtab_hdr->sh_size = _bfd_stringtab_size (stt);
5858 symstrtab_hdr->sh_type = SHT_STRTAB;
252b5132 5859
079e9a2f
AM		 5860 symstrtab_hdr->sh_flags = 0;
5861 symstrtab_hdr->sh_addr = 0;
5862 symstrtab_hdr->sh_entsize = 0;
5863 symstrtab_hdr->sh_link = 0;
5864 symstrtab_hdr->sh_info = 0;
5865 symstrtab_hdr->sh_addralign = 1;
252b5132 5866
b34976b6 5867 return TRUE;
252b5132
RH		 5868}
5869
5870/* Return the number of bytes required to hold the symtab vector.
5871
5872 Note that we base it on the count plus 1, since we will null terminate
5873 the vector allocated based on this size. However, the ELF symbol table
5874 always has a dummy entry as symbol #0, so it ends up even. */
5875
5876long
217aa764 5877_bfd_elf_get_symtab_upper_bound (bfd *abfd)
252b5132
RH		 5878{
5879 long symcount;
5880 long symtab_size;
5881 Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr;
5882
5883 symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym;
b99d1833
AM		 5884 symtab_size = (symcount + 1) * (sizeof (asymbol *));
5885 if (symcount > 0)
5886 symtab_size -= sizeof (asymbol *);
252b5132
RH		 5887
5888 return symtab_size;
5889}
5890
5891long
217aa764 5892_bfd_elf_get_dynamic_symtab_upper_bound (bfd *abfd)
252b5132
RH		 5893{
5894 long symcount;
5895 long symtab_size;
5896 Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr;
5897
5898 if (elf_dynsymtab (abfd) == 0)
5899 {
5900 bfd_set_error (bfd_error_invalid_operation);
5901 return -1;
5902 }
5903
5904 symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym;
b99d1833
AM		 5905 symtab_size = (symcount + 1) * (sizeof (asymbol *));
5906 if (symcount > 0)
5907 symtab_size -= sizeof (asymbol *);
252b5132
RH		 5908
5909 return symtab_size;
5910}
5911
5912long
217aa764
AM		 5913_bfd_elf_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED,
5914 sec_ptr asect)
252b5132
RH		 5915{
5916 return (asect->reloc_count + 1) * sizeof (arelent *);
5917}
5918
5919/* Canonicalize the relocs. */
5920
5921long
217aa764
AM		 5922_bfd_elf_canonicalize_reloc (bfd *abfd,
5923 sec_ptr section,
5924 arelent **relptr,
5925 asymbol **symbols)
252b5132
RH		 5926{
5927 arelent *tblptr;
5928 unsigned int i;
9c5bfbb7 5929 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
252b5132 5930
b34976b6 5931 if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE))
252b5132
RH		 5932 return -1;
5933
5934 tblptr = section->relocation;
5935 for (i = 0; i < section->reloc_count; i++)
5936 *relptr++ = tblptr++;
5937
5938 *relptr = NULL;
5939
5940 return section->reloc_count;
5941}
5942
5943long
6cee3f79 5944_bfd_elf_canonicalize_symtab (bfd *abfd, asymbol **allocation)
252b5132 5945{
9c5bfbb7 5946 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
217aa764 5947 long symcount = bed->s->slurp_symbol_table (abfd, allocation, FALSE);
252b5132
RH		 5948
5949 if (symcount >= 0)
5950 bfd_get_symcount (abfd) = symcount;
5951 return symcount;
5952}
5953
5954long
217aa764
AM		 5955_bfd_elf_canonicalize_dynamic_symtab (bfd *abfd,
5956 asymbol **allocation)
252b5132 5957{
9c5bfbb7 5958 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
217aa764 5959 long symcount = bed->s->slurp_symbol_table (abfd, allocation, TRUE);
1f70368c
DJ		 5960
5961 if (symcount >= 0)
5962 bfd_get_dynamic_symcount (abfd) = symcount;
5963 return symcount;
252b5132
RH		 5964}
5965
5966/* Return the size required for the dynamic reloc entries. Any
5967 section that was actually installed in the BFD, and has type
5968 SHT_REL or SHT_RELA, and uses the dynamic symbol table, is
5969 considered to be a dynamic reloc section. */
5970
5971long
217aa764 5972_bfd_elf_get_dynamic_reloc_upper_bound (bfd *abfd)
252b5132
RH		 5973{
5974 long ret;
5975 asection *s;
5976
5977 if (elf_dynsymtab (abfd) == 0)
5978 {
5979 bfd_set_error (bfd_error_invalid_operation);
5980 return -1;
5981 }
5982
5983 ret = sizeof (arelent *);
5984 for (s = abfd->sections; s != NULL; s = s->next)
5985 if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
5986 && (elf_section_data (s)->this_hdr.sh_type == SHT_REL
5987 || elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
eea6121a 5988 ret += ((s->size / elf_section_data (s)->this_hdr.sh_entsize)
252b5132
RH		 5989 * sizeof (arelent *));
5990
5991 return ret;
5992}
5993
5994/* Canonicalize the dynamic relocation entries. Note that we return
5995 the dynamic relocations as a single block, although they are
5996 actually associated with particular sections; the interface, which
5997 was designed for SunOS style shared libraries, expects that there
5998 is only one set of dynamic relocs. Any section that was actually
5999 installed in the BFD, and has type SHT_REL or SHT_RELA, and uses
6000 the dynamic symbol table, is considered to be a dynamic reloc
6001 section. */
6002
6003long
217aa764
AM		 6004_bfd_elf_canonicalize_dynamic_reloc (bfd *abfd,
6005 arelent **storage,
6006 asymbol **syms)
252b5132 6007{
217aa764 6008 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
252b5132
RH		 6009 asection *s;
6010 long ret;
6011
6012 if (elf_dynsymtab (abfd) == 0)
6013 {
6014 bfd_set_error (bfd_error_invalid_operation);
6015 return -1;
6016 }
6017
6018 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
6019 ret = 0;
6020 for (s = abfd->sections; s != NULL; s = s->next)
6021 {
6022 if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
6023 && (elf_section_data (s)->this_hdr.sh_type == SHT_REL
6024 || elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
6025 {
6026 arelent *p;
6027 long count, i;
6028
b34976b6 6029 if (! (*slurp_relocs) (abfd, s, syms, TRUE))
252b5132 6030 return -1;
eea6121a 6031 count = s->size / elf_section_data (s)->this_hdr.sh_entsize;
252b5132
RH		 6032 p = s->relocation;
6033 for (i = 0; i < count; i++)
6034 *storage++ = p++;
6035 ret += count;
6036 }
6037 }
6038
6039 *storage = NULL;
6040
6041 return ret;
6042}
6043\f
6044/* Read in the version information. */
6045
b34976b6 6046bfd_boolean
fc0e6df6 6047_bfd_elf_slurp_version_tables (bfd *abfd, bfd_boolean default_imported_symver)
252b5132
RH		 6048{
6049 bfd_byte *contents = NULL;
dc810e39 6050 bfd_size_type amt;
fc0e6df6
PB		 6051 unsigned int freeidx = 0;
6052
6053 if (elf_dynverref (abfd) != 0)
6054 {
6055 Elf_Internal_Shdr *hdr;
6056 Elf_External_Verneed *everneed;
6057 Elf_Internal_Verneed *iverneed;
6058 unsigned int i;
6059
6060 hdr = &elf_tdata (abfd)->dynverref_hdr;
6061
6062 amt = (bfd_size_type) hdr->sh_info * sizeof (Elf_Internal_Verneed);
6063 elf_tdata (abfd)->verref = bfd_zalloc (abfd, amt);
6064 if (elf_tdata (abfd)->verref == NULL)
6065 goto error_return;
6066
6067 elf_tdata (abfd)->cverrefs = hdr->sh_info;
6068
6069 contents = bfd_malloc (hdr->sh_size);
6070 if (contents == NULL)
6071 goto error_return;
6072 if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
6073 || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size)
6074 goto error_return;
6075
6076 everneed = (Elf_External_Verneed *) contents;
6077 iverneed = elf_tdata (abfd)->verref;
6078 for (i = 0; i < hdr->sh_info; i++, iverneed++)
6079 {
6080 Elf_External_Vernaux *evernaux;
6081 Elf_Internal_Vernaux *ivernaux;
6082 unsigned int j;
6083
6084 _bfd_elf_swap_verneed_in (abfd, everneed, iverneed);
6085
6086 iverneed->vn_bfd = abfd;
6087
6088 iverneed->vn_filename =
6089 bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
6090 iverneed->vn_file);
6091 if (iverneed->vn_filename == NULL)
6092 goto error_return;
6093
6094 amt = iverneed->vn_cnt;
6095 amt *= sizeof (Elf_Internal_Vernaux);
6096 iverneed->vn_auxptr = bfd_alloc (abfd, amt);
6097
6098 evernaux = ((Elf_External_Vernaux *)
6099 ((bfd_byte *) everneed + iverneed->vn_aux));
6100 ivernaux = iverneed->vn_auxptr;
6101 for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++)
6102 {
6103 _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux);
6104
6105 ivernaux->vna_nodename =
6106 bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
6107 ivernaux->vna_name);
6108 if (ivernaux->vna_nodename == NULL)
6109 goto error_return;
6110
6111 if (j + 1 < iverneed->vn_cnt)
6112 ivernaux->vna_nextptr = ivernaux + 1;
6113 else
6114 ivernaux->vna_nextptr = NULL;
6115
6116 evernaux = ((Elf_External_Vernaux *)
6117 ((bfd_byte *) evernaux + ivernaux->vna_next));
6118
6119 if (ivernaux->vna_other > freeidx)
6120 freeidx = ivernaux->vna_other;
6121 }
6122
6123 if (i + 1 < hdr->sh_info)
6124 iverneed->vn_nextref = iverneed + 1;
6125 else
6126 iverneed->vn_nextref = NULL;
6127
6128 everneed = ((Elf_External_Verneed *)
6129 ((bfd_byte *) everneed + iverneed->vn_next));
6130 }
6131
6132 free (contents);
6133 contents = NULL;
6134 }
252b5132
RH		 6135
6136 if (elf_dynverdef (abfd) != 0)
6137 {
6138 Elf_Internal_Shdr *hdr;
6139 Elf_External_Verdef *everdef;
6140 Elf_Internal_Verdef *iverdef;
f631889e
UD		 6141 Elf_Internal_Verdef *iverdefarr;
6142 Elf_Internal_Verdef iverdefmem;
252b5132 6143 unsigned int i;
062e2358 6144 unsigned int maxidx;
252b5132
RH		 6145
6146 hdr = &elf_tdata (abfd)->dynverdef_hdr;
6147
217aa764 6148 contents = bfd_malloc (hdr->sh_size);
252b5132
RH		 6149 if (contents == NULL)
6150 goto error_return;
6151 if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
217aa764 6152 || bfd_bread (contents, hdr->sh_size, abfd) != hdr->sh_size)
252b5132
RH		 6153 goto error_return;
6154
f631889e
UD		 6155 /* We know the number of entries in the section but not the maximum
6156 index. Therefore we have to run through all entries and find
6157 the maximum. */
252b5132 6158 everdef = (Elf_External_Verdef *) contents;
f631889e
UD		 6159 maxidx = 0;
6160 for (i = 0; i < hdr->sh_info; ++i)
6161 {
6162 _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem);
6163
062e2358
AM		 6164 if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx)
6165 maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION);
f631889e
UD		 6166
6167 everdef = ((Elf_External_Verdef *)
6168 ((bfd_byte *) everdef + iverdefmem.vd_next));
6169 }
6170
fc0e6df6
PB		 6171 if (default_imported_symver)
6172 {
6173 if (freeidx > maxidx)
6174 maxidx = ++freeidx;
6175 else
6176 freeidx = ++maxidx;
6177 }
dc810e39 6178 amt = (bfd_size_type) maxidx * sizeof (Elf_Internal_Verdef);
217aa764 6179 elf_tdata (abfd)->verdef = bfd_zalloc (abfd, amt);
f631889e
UD		 6180 if (elf_tdata (abfd)->verdef == NULL)
6181 goto error_return;
6182
6183 elf_tdata (abfd)->cverdefs = maxidx;
6184
6185 everdef = (Elf_External_Verdef *) contents;
6186 iverdefarr = elf_tdata (abfd)->verdef;
6187 for (i = 0; i < hdr->sh_info; i++)
252b5132
RH		 6188 {
6189 Elf_External_Verdaux *everdaux;
6190 Elf_Internal_Verdaux *iverdaux;
6191 unsigned int j;
6192
f631889e
UD		 6193 _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem);
6194
6195 iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1];
6196 memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef));
252b5132
RH		 6197
6198 iverdef->vd_bfd = abfd;
6199
dc810e39 6200 amt = (bfd_size_type) iverdef->vd_cnt * sizeof (Elf_Internal_Verdaux);
217aa764 6201 iverdef->vd_auxptr = bfd_alloc (abfd, amt);
252b5132
RH		 6202 if (iverdef->vd_auxptr == NULL)
6203 goto error_return;
6204
6205 everdaux = ((Elf_External_Verdaux *)
6206 ((bfd_byte *) everdef + iverdef->vd_aux));
6207 iverdaux = iverdef->vd_auxptr;
6208 for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++)
6209 {
6210 _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux);
6211
6212 iverdaux->vda_nodename =
6213 bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
6214 iverdaux->vda_name);
6215 if (iverdaux->vda_nodename == NULL)
6216 goto error_return;
6217
6218 if (j + 1 < iverdef->vd_cnt)
6219 iverdaux->vda_nextptr = iverdaux + 1;
6220 else
6221 iverdaux->vda_nextptr = NULL;
6222
6223 everdaux = ((Elf_External_Verdaux *)
6224 ((bfd_byte *) everdaux + iverdaux->vda_next));
6225 }
6226
6227 iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename;
6228
6229 if (i + 1 < hdr->sh_info)
6230 iverdef->vd_nextdef = iverdef + 1;
6231 else
6232 iverdef->vd_nextdef = NULL;
6233
6234 everdef = ((Elf_External_Verdef *)
6235 ((bfd_byte *) everdef + iverdef->vd_next));
6236 }
6237
6238 free (contents);
6239 contents = NULL;
6240 }
fc0e6df6 6241 else if (default_imported_symver)
252b5132 6242 {
fc0e6df6
PB		 6243 if (freeidx < 3)
6244 freeidx = 3;
6245 else
6246 freeidx++;
252b5132 6247
fc0e6df6
PB		 6248 amt = (bfd_size_type) freeidx * sizeof (Elf_Internal_Verdef);
6249 elf_tdata (abfd)->verdef = bfd_zalloc (abfd, amt);
6250 if (elf_tdata (abfd)->verdef == NULL)
252b5132
RH		 6251 goto error_return;
6252
fc0e6df6
PB		 6253 elf_tdata (abfd)->cverdefs = freeidx;
6254 }
252b5132 6255
fc0e6df6
PB		 6256 /* Create a default version based on the soname. */
6257 if (default_imported_symver)
6258 {
6259 Elf_Internal_Verdef *iverdef;
6260 Elf_Internal_Verdaux *iverdaux;
252b5132 6261
fc0e6df6 6262 iverdef = &elf_tdata (abfd)->verdef[freeidx - 1];;
252b5132 6263
fc0e6df6
PB		 6264 iverdef->vd_version = VER_DEF_CURRENT;
6265 iverdef->vd_flags = 0;
6266 iverdef->vd_ndx = freeidx;
6267 iverdef->vd_cnt = 1;
252b5132 6268
fc0e6df6 6269 iverdef->vd_bfd = abfd;
252b5132 6270
fc0e6df6
PB		 6271 iverdef->vd_nodename = bfd_elf_get_dt_soname (abfd);
6272 if (iverdef->vd_nodename == NULL)
6273 goto error_return;
6274 iverdef->vd_nextdef = NULL;
6275 amt = (bfd_size_type) sizeof (Elf_Internal_Verdaux);
6276 iverdef->vd_auxptr = bfd_alloc (abfd, amt);
252b5132 6277
fc0e6df6
PB		 6278 iverdaux = iverdef->vd_auxptr;
6279 iverdaux->vda_nodename = iverdef->vd_nodename;
6280 iverdaux->vda_nextptr = NULL;
252b5132
RH		 6281 }
6282
b34976b6 6283 return TRUE;
252b5132
RH		 6284
6285 error_return:
5ed6aba4 6286 if (contents != NULL)
252b5132 6287 free (contents);
b34976b6 6288 return FALSE;
252b5132
RH		 6289}
6290\f
6291asymbol *
217aa764 6292_bfd_elf_make_empty_symbol (bfd *abfd)
252b5132
RH		 6293{
6294 elf_symbol_type *newsym;
dc810e39 6295 bfd_size_type amt = sizeof (elf_symbol_type);
252b5132 6296
217aa764 6297 newsym = bfd_zalloc (abfd, amt);
252b5132
RH		 6298 if (!newsym)
6299 return NULL;
6300 else
6301 {
6302 newsym->symbol.the_bfd = abfd;
6303 return &newsym->symbol;
6304 }
6305}
6306
6307void
217aa764
AM		 6308_bfd_elf_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
6309 asymbol *symbol,
6310 symbol_info *ret)
252b5132
RH		 6311{
6312 bfd_symbol_info (symbol, ret);
6313}
6314
6315/* Return whether a symbol name implies a local symbol. Most targets
6316 use this function for the is_local_label_name entry point, but some
6317 override it. */
6318
b34976b6 6319bfd_boolean
217aa764
AM		 6320_bfd_elf_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED,
6321 const char *name)
252b5132
RH		 6322{
6323 /* Normal local symbols start with ``.L''. */
6324 if (name[0] == '.' && name[1] == 'L')
b34976b6 6325 return TRUE;
252b5132
RH		 6326
6327 /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate
6328 DWARF debugging symbols starting with ``..''. */
6329 if (name[0] == '.' && name[1] == '.')
b34976b6 6330 return TRUE;
252b5132
RH		 6331
6332 /* gcc will sometimes generate symbols beginning with ``_.L_'' when
6333 emitting DWARF debugging output. I suspect this is actually a
6334 small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call
6335 ASM_GENERATE_INTERNAL_LABEL, and this causes the leading
6336 underscore to be emitted on some ELF targets). For ease of use,
6337 we treat such symbols as local. */
6338 if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_')
b34976b6 6339 return TRUE;
252b5132 6340
b34976b6 6341 return FALSE;
252b5132
RH		 6342}
6343
6344alent *
217aa764
AM		 6345_bfd_elf_get_lineno (bfd *abfd ATTRIBUTE_UNUSED,
6346 asymbol *symbol ATTRIBUTE_UNUSED)
252b5132
RH		 6347{
6348 abort ();
6349 return NULL;
6350}
6351
b34976b6 6352bfd_boolean
217aa764
AM		 6353_bfd_elf_set_arch_mach (bfd *abfd,
6354 enum bfd_architecture arch,
6355 unsigned long machine)
252b5132
RH		 6356{
6357 /* If this isn't the right architecture for this backend, and this
6358 isn't the generic backend, fail. */
6359 if (arch != get_elf_backend_data (abfd)->arch
6360 && arch != bfd_arch_unknown
6361 && get_elf_backend_data (abfd)->arch != bfd_arch_unknown)
b34976b6 6362 return FALSE;
252b5132
RH		 6363
6364 return bfd_default_set_arch_mach (abfd, arch, machine);
6365}
6366
d1fad7c6
NC		 6367/* Find the function to a particular section and offset,
6368 for error reporting. */
252b5132 6369
b34976b6 6370static bfd_boolean
217aa764
AM		 6371elf_find_function (bfd *abfd ATTRIBUTE_UNUSED,
6372 asection *section,
6373 asymbol **symbols,
6374 bfd_vma offset,
6375 const char **filename_ptr,
6376 const char **functionname_ptr)
252b5132 6377{
252b5132 6378 const char *filename;
57426232 6379 asymbol *func, *file;
252b5132
RH		 6380 bfd_vma low_func;
6381 asymbol **p;
57426232
JB		 6382 /* ??? Given multiple file symbols, it is impossible to reliably
6383 choose the right file name for global symbols. File symbols are
6384 local symbols, and thus all file symbols must sort before any
6385 global symbols. The ELF spec may be interpreted to say that a
6386 file symbol must sort before other local symbols, but currently
6387 ld -r doesn't do this. So, for ld -r output, it is possible to
6388 make a better choice of file name for local symbols by ignoring
6389 file symbols appearing after a given local symbol. */
6390 enum { nothing_seen, symbol_seen, file_after_symbol_seen } state;
252b5132 6391
252b5132
RH		 6392 filename = NULL;
6393 func = NULL;
57426232 6394 file = NULL;
252b5132 6395 low_func = 0;
57426232 6396 state = nothing_seen;
252b5132
RH		 6397
6398 for (p = symbols; *p != NULL; p++)
6399 {
6400 elf_symbol_type *q;
6401
6402 q = (elf_symbol_type *) *p;
6403
252b5132
RH		 6404 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
6405 {
6406 default:
6407 break;
6408 case STT_FILE:
57426232
JB		 6409 file = &q->symbol;
6410 if (state == symbol_seen)
6411 state = file_after_symbol_seen;
6412 continue;
6413 case STT_SECTION:
6414 continue;
252b5132
RH		 6415 case STT_NOTYPE:
6416 case STT_FUNC:
6b40fcba 6417 if (bfd_get_section (&q->symbol) == section
252b5132
RH		 6418 && q->symbol.value >= low_func
6419 && q->symbol.value <= offset)
6420 {
6421 func = (asymbol *) q;
6422 low_func = q->symbol.value;
57426232
JB		 6423 if (file == NULL)
6424 filename = NULL;
6425 else if (ELF_ST_BIND (q->internal_elf_sym.st_info) != STB_LOCAL
6426 && state == file_after_symbol_seen)
6427 filename = NULL;
6428 else
6429 filename = bfd_asymbol_name (file);
252b5132
RH		 6430 }
6431 break;
6432 }
57426232
JB		 6433 if (state == nothing_seen)
6434 state = symbol_seen;
252b5132
RH		 6435 }
6436
6437 if (func == NULL)
b34976b6 6438 return FALSE;
252b5132 6439
d1fad7c6
NC		 6440 if (filename_ptr)
6441 *filename_ptr = filename;
6442 if (functionname_ptr)
6443 *functionname_ptr = bfd_asymbol_name (func);
6444
b34976b6 6445 return TRUE;
d1fad7c6
NC		 6446}
6447
6448/* Find the nearest line to a particular section and offset,
6449 for error reporting. */
6450
b34976b6 6451bfd_boolean
217aa764
AM		 6452_bfd_elf_find_nearest_line (bfd *abfd,
6453 asection *section,
6454 asymbol **symbols,
6455 bfd_vma offset,
6456 const char **filename_ptr,
6457 const char **functionname_ptr,
6458 unsigned int *line_ptr)
d1fad7c6 6459{
b34976b6 6460 bfd_boolean found;
d1fad7c6
NC		 6461
6462 if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset,
4e8a9624
AM		 6463 filename_ptr, functionname_ptr,
6464 line_ptr))
d1fad7c6
NC		 6465 {
6466 if (!*functionname_ptr)
4e8a9624
AM		 6467 elf_find_function (abfd, section, symbols, offset,
6468 *filename_ptr ? NULL : filename_ptr,
6469 functionname_ptr);
6470
b34976b6 6471 return TRUE;
d1fad7c6
NC		 6472 }
6473
6474 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
4e8a9624
AM		 6475 filename_ptr, functionname_ptr,
6476 line_ptr, 0,
6477 &elf_tdata (abfd)->dwarf2_find_line_info))
d1fad7c6
NC		 6478 {
6479 if (!*functionname_ptr)
4e8a9624
AM		 6480 elf_find_function (abfd, section, symbols, offset,
6481 *filename_ptr ? NULL : filename_ptr,
6482 functionname_ptr);
6483
b34976b6 6484 return TRUE;
d1fad7c6
NC		 6485 }
6486
6487 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
4e8a9624
AM		 6488 &found, filename_ptr,
6489 functionname_ptr, line_ptr,
6490 &elf_tdata (abfd)->line_info))
b34976b6 6491 return FALSE;
dc43ada5 6492 if (found && (*functionname_ptr || *line_ptr))
b34976b6 6493 return TRUE;
d1fad7c6
NC		 6494
6495 if (symbols == NULL)
b34976b6 6496 return FALSE;
d1fad7c6
NC		 6497
6498 if (! elf_find_function (abfd, section, symbols, offset,
4e8a9624 6499 filename_ptr, functionname_ptr))
b34976b6 6500 return FALSE;
d1fad7c6 6501
252b5132 6502 *line_ptr = 0;
b34976b6 6503 return TRUE;
252b5132
RH		 6504}
6505
6506int
217aa764 6507_bfd_elf_sizeof_headers (bfd *abfd, bfd_boolean reloc)
252b5132
RH		 6508{
6509 int ret;
6510
6511 ret = get_elf_backend_data (abfd)->s->sizeof_ehdr;
6512 if (! reloc)
6513 ret += get_program_header_size (abfd);
6514 return ret;
6515}
6516
b34976b6 6517bfd_boolean
217aa764
AM		 6518_bfd_elf_set_section_contents (bfd *abfd,
6519 sec_ptr section,
0f867abe 6520 const void *location,
217aa764
AM		 6521 file_ptr offset,
6522 bfd_size_type count)
252b5132
RH		 6523{
6524 Elf_Internal_Shdr *hdr;
dc810e39 6525 bfd_signed_vma pos;
252b5132
RH		 6526
6527 if (! abfd->output_has_begun
217aa764 6528 && ! _bfd_elf_compute_section_file_positions (abfd, NULL))
b34976b6 6529 return FALSE;
252b5132
RH		 6530
6531 hdr = &elf_section_data (section)->this_hdr;
dc810e39
AM		 6532 pos = hdr->sh_offset + offset;
6533 if (bfd_seek (abfd, pos, SEEK_SET) != 0
6534 || bfd_bwrite (location, count, abfd) != count)
b34976b6 6535 return FALSE;
252b5132 6536
b34976b6 6537 return TRUE;
252b5132
RH		 6538}
6539
6540void
217aa764
AM		 6541_bfd_elf_no_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
6542 arelent *cache_ptr ATTRIBUTE_UNUSED,
6543 Elf_Internal_Rela *dst ATTRIBUTE_UNUSED)
252b5132
RH		 6544{
6545 abort ();
6546}
6547
252b5132
RH		 6548/* Try to convert a non-ELF reloc into an ELF one. */
6549
b34976b6 6550bfd_boolean
217aa764 6551_bfd_elf_validate_reloc (bfd *abfd, arelent *areloc)
252b5132 6552{
c044fabd 6553 /* Check whether we really have an ELF howto. */
252b5132
RH		 6554
6555 if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec)
6556 {
6557 bfd_reloc_code_real_type code;
6558 reloc_howto_type *howto;
6559
6560 /* Alien reloc: Try to determine its type to replace it with an
c044fabd 6561 equivalent ELF reloc. */
252b5132
RH		 6562
6563 if (areloc->howto->pc_relative)
6564 {
6565 switch (areloc->howto->bitsize)
6566 {
6567 case 8:
6568 code = BFD_RELOC_8_PCREL;
6569 break;
6570 case 12:
6571 code = BFD_RELOC_12_PCREL;
6572 break;
6573 case 16:
6574 code = BFD_RELOC_16_PCREL;
6575 break;
6576 case 24:
6577 code = BFD_RELOC_24_PCREL;
6578 break;
6579 case 32:
6580 code = BFD_RELOC_32_PCREL;
6581 break;
6582 case 64:
6583 code = BFD_RELOC_64_PCREL;
6584 break;
6585 default:
6586 goto fail;
6587 }
6588
6589 howto = bfd_reloc_type_lookup (abfd, code);
6590
6591 if (areloc->howto->pcrel_offset != howto->pcrel_offset)
6592 {
6593 if (howto->pcrel_offset)
6594 areloc->addend += areloc->address;
6595 else
6596 areloc->addend -= areloc->address; /* addend is unsigned!! */
6597 }
6598 }
6599 else
6600 {
6601 switch (areloc->howto->bitsize)
6602 {
6603 case 8:
6604 code = BFD_RELOC_8;
6605 break;
6606 case 14:
6607 code = BFD_RELOC_14;
6608 break;
6609 case 16:
6610 code = BFD_RELOC_16;
6611 break;
6612 case 26:
6613 code = BFD_RELOC_26;
6614 break;
6615 case 32:
6616 code = BFD_RELOC_32;
6617 break;
6618 case 64:
6619 code = BFD_RELOC_64;
6620 break;
6621 default:
6622 goto fail;
6623 }
6624
6625 howto = bfd_reloc_type_lookup (abfd, code);
6626 }
6627
6628 if (howto)
6629 areloc->howto = howto;
6630 else
6631 goto fail;
6632 }
6633
b34976b6 6634 return TRUE;
252b5132
RH		 6635
6636 fail:
6637 (*_bfd_error_handler)
d003868e
AM		 6638 (_("%B: unsupported relocation type %s"),
6639 abfd, areloc->howto->name);
252b5132 6640 bfd_set_error (bfd_error_bad_value);
b34976b6 6641 return FALSE;
252b5132
RH		 6642}
6643
b34976b6 6644bfd_boolean
217aa764 6645_bfd_elf_close_and_cleanup (bfd *abfd)
252b5132
RH		 6646{
6647 if (bfd_get_format (abfd) == bfd_object)
6648 {
6649 if (elf_shstrtab (abfd) != NULL)
2b0f7ef9 6650 _bfd_elf_strtab_free (elf_shstrtab (abfd));
252b5132
RH		 6651 }
6652
6653 return _bfd_generic_close_and_cleanup (abfd);
6654}
6655
6656/* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY
6657 in the relocation's offset. Thus we cannot allow any sort of sanity
6658 range-checking to interfere. There is nothing else to do in processing
6659 this reloc. */
6660
6661bfd_reloc_status_type
217aa764
AM		 6662_bfd_elf_rel_vtable_reloc_fn
6663 (bfd *abfd ATTRIBUTE_UNUSED, arelent *re ATTRIBUTE_UNUSED,
fc0a2244 6664 struct bfd_symbol *symbol ATTRIBUTE_UNUSED,
217aa764
AM		 6665 void *data ATTRIBUTE_UNUSED, asection *is ATTRIBUTE_UNUSED,
6666 bfd *obfd ATTRIBUTE_UNUSED, char **errmsg ATTRIBUTE_UNUSED)
252b5132
RH		 6667{
6668 return bfd_reloc_ok;
6669}
252b5132
RH		 6670\f
6671/* Elf core file support. Much of this only works on native
6672 toolchains, since we rely on knowing the
6673 machine-dependent procfs structure in order to pick
c044fabd 6674 out details about the corefile. */
252b5132
RH		 6675
6676#ifdef HAVE_SYS_PROCFS_H
6677# include <sys/procfs.h>
6678#endif
6679
c044fabd 6680/* FIXME: this is kinda wrong, but it's what gdb wants. */
252b5132
RH		 6681
6682static int
217aa764 6683elfcore_make_pid (bfd *abfd)
252b5132
RH		 6684{
6685 return ((elf_tdata (abfd)->core_lwpid << 16)
6686 + (elf_tdata (abfd)->core_pid));
6687}
6688
252b5132
RH		 6689/* If there isn't a section called NAME, make one, using
6690 data from SECT. Note, this function will generate a
6691 reference to NAME, so you shouldn't deallocate or
c044fabd 6692 overwrite it. */
252b5132 6693
b34976b6 6694static bfd_boolean
217aa764 6695elfcore_maybe_make_sect (bfd *abfd, char *name, asection *sect)
252b5132 6696{
c044fabd 6697 asection *sect2;
252b5132
RH		 6698
6699 if (bfd_get_section_by_name (abfd, name) != NULL)
b34976b6 6700 return TRUE;
252b5132
RH		 6701
6702 sect2 = bfd_make_section (abfd, name);
6703 if (sect2 == NULL)
b34976b6 6704 return FALSE;
252b5132 6705
eea6121a 6706 sect2->size = sect->size;
252b5132
RH		 6707 sect2->filepos = sect->filepos;
6708 sect2->flags = sect->flags;
6709 sect2->alignment_power = sect->alignment_power;
b34976b6 6710 return TRUE;
252b5132
RH		 6711}
6712
bb0082d6
AM		 6713/* Create a pseudosection containing SIZE bytes at FILEPOS. This
6714 actually creates up to two pseudosections:
6715 - For the single-threaded case, a section named NAME, unless
6716 such a section already exists.
6717 - For the multi-threaded case, a section named "NAME/PID", where
6718 PID is elfcore_make_pid (abfd).
6719 Both pseudosections have identical contents. */
b34976b6 6720bfd_boolean
217aa764
AM		 6721_bfd_elfcore_make_pseudosection (bfd *abfd,
6722 char *name,
6723 size_t size,
6724 ufile_ptr filepos)
bb0082d6
AM		 6725{
6726 char buf[100];
6727 char *threaded_name;
d4c88bbb 6728 size_t len;
bb0082d6
AM		 6729 asection *sect;
6730
6731 /* Build the section name. */
6732
6733 sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd));
d4c88bbb 6734 len = strlen (buf) + 1;
217aa764 6735 threaded_name = bfd_alloc (abfd, len);
bb0082d6 6736 if (threaded_name == NULL)
b34976b6 6737 return FALSE;
d4c88bbb 6738 memcpy (threaded_name, buf, len);
bb0082d6 6739
62f3bb11 6740 sect = bfd_make_section_anyway (abfd, threaded_name);
bb0082d6 6741 if (sect == NULL)
b34976b6 6742 return FALSE;
eea6121a 6743 sect->size = size;
bb0082d6
AM		 6744 sect->filepos = filepos;
6745 sect->flags = SEC_HAS_CONTENTS;
6746 sect->alignment_power = 2;
6747
936e320b 6748 return elfcore_maybe_make_sect (abfd, name, sect);
bb0082d6
AM		 6749}
6750
252b5132 6751/* prstatus_t exists on:
4a938328 6752 solaris 2.5+
252b5132
RH		 6753 linux 2.[01] + glibc
6754 unixware 4.2
6755*/
6756
6757#if defined (HAVE_PRSTATUS_T)
a7b97311 6758
b34976b6 6759static bfd_boolean
217aa764 6760elfcore_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
252b5132 6761{
eea6121a 6762 size_t size;
7ee38065 6763 int offset;
252b5132 6764
4a938328
MS		 6765 if (note->descsz == sizeof (prstatus_t))
6766 {
6767 prstatus_t prstat;
252b5132 6768
eea6121a 6769 size = sizeof (prstat.pr_reg);
7ee38065 6770 offset = offsetof (prstatus_t, pr_reg);
4a938328 6771 memcpy (&prstat, note->descdata, sizeof (prstat));
252b5132 6772
fa49d224
NC		 6773 /* Do not overwrite the core signal if it
6774 has already been set by another thread. */
6775 if (elf_tdata (abfd)->core_signal == 0)
6776 elf_tdata (abfd)->core_signal = prstat.pr_cursig;
4a938328 6777 elf_tdata (abfd)->core_pid = prstat.pr_pid;
252b5132 6778
4a938328
MS		 6779 /* pr_who exists on:
6780 solaris 2.5+
6781 unixware 4.2
6782 pr_who doesn't exist on:
6783 linux 2.[01]
6784 */
252b5132 6785#if defined (HAVE_PRSTATUS_T_PR_WHO)
4a938328 6786 elf_tdata (abfd)->core_lwpid = prstat.pr_who;
252b5132 6787#endif
4a938328 6788 }
7ee38065 6789#if defined (HAVE_PRSTATUS32_T)
4a938328
MS		 6790 else if (note->descsz == sizeof (prstatus32_t))
6791 {
6792 /* 64-bit host, 32-bit corefile */
6793 prstatus32_t prstat;
6794
eea6121a 6795 size = sizeof (prstat.pr_reg);
7ee38065 6796 offset = offsetof (prstatus32_t, pr_reg);
4a938328
MS		 6797 memcpy (&prstat, note->descdata, sizeof (prstat));
6798
fa49d224
NC		 6799 /* Do not overwrite the core signal if it
6800 has already been set by another thread. */
6801 if (elf_tdata (abfd)->core_signal == 0)
6802 elf_tdata (abfd)->core_signal = prstat.pr_cursig;
4a938328
MS		 6803 elf_tdata (abfd)->core_pid = prstat.pr_pid;
6804
6805 /* pr_who exists on:
6806 solaris 2.5+
6807 unixware 4.2
6808 pr_who doesn't exist on:
6809 linux 2.[01]
6810 */
7ee38065 6811#if defined (HAVE_PRSTATUS32_T_PR_WHO)
4a938328
MS		 6812 elf_tdata (abfd)->core_lwpid = prstat.pr_who;
6813#endif
6814 }
7ee38065 6815#endif /* HAVE_PRSTATUS32_T */
4a938328
MS		 6816 else
6817 {
6818 /* Fail - we don't know how to handle any other
6819 note size (ie. data object type). */
b34976b6 6820 return TRUE;
4a938328 6821 }
252b5132 6822
bb0082d6 6823 /* Make a ".reg/999" section and a ".reg" section. */
936e320b 6824 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 6825 size, note->descpos + offset);
252b5132
RH		 6826}
6827#endif /* defined (HAVE_PRSTATUS_T) */
6828
bb0082d6 6829/* Create a pseudosection containing the exact contents of NOTE. */
b34976b6 6830static bfd_boolean
217aa764
AM		 6831elfcore_make_note_pseudosection (bfd *abfd,
6832 char *name,
6833 Elf_Internal_Note *note)
252b5132 6834{
936e320b
AM		 6835 return _bfd_elfcore_make_pseudosection (abfd, name,
6836 note->descsz, note->descpos);
252b5132
RH		 6837}
6838
ff08c6bb
JB		 6839/* There isn't a consistent prfpregset_t across platforms,
6840 but it doesn't matter, because we don't have to pick this
c044fabd
KH		 6841 data structure apart. */
6842
b34976b6 6843static bfd_boolean
217aa764 6844elfcore_grok_prfpreg (bfd *abfd, Elf_Internal_Note *note)
ff08c6bb
JB		 6845{
6846 return elfcore_make_note_pseudosection (abfd, ".reg2", note);
6847}
6848
ff08c6bb
JB		 6849/* Linux dumps the Intel SSE regs in a note named "LINUX" with a note
6850 type of 5 (NT_PRXFPREG). Just include the whole note's contents
6851 literally. */
c044fabd 6852
b34976b6 6853static bfd_boolean
217aa764 6854elfcore_grok_prxfpreg (bfd *abfd, Elf_Internal_Note *note)
ff08c6bb
JB		 6855{
6856 return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note);
6857}
6858
252b5132 6859#if defined (HAVE_PRPSINFO_T)
4a938328 6860typedef prpsinfo_t elfcore_psinfo_t;
7ee38065 6861#if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */
4a938328
MS		 6862typedef prpsinfo32_t elfcore_psinfo32_t;
6863#endif
252b5132
RH		 6864#endif
6865
6866#if defined (HAVE_PSINFO_T)
4a938328 6867typedef psinfo_t elfcore_psinfo_t;
7ee38065 6868#if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */
4a938328
MS		 6869typedef psinfo32_t elfcore_psinfo32_t;
6870#endif
252b5132
RH		 6871#endif
6872
252b5132
RH		 6873/* return a malloc'ed copy of a string at START which is at
6874 most MAX bytes long, possibly without a terminating '\0'.
c044fabd 6875 the copy will always have a terminating '\0'. */
252b5132 6876
936e320b 6877char *
217aa764 6878_bfd_elfcore_strndup (bfd *abfd, char *start, size_t max)
252b5132 6879{
dc810e39 6880 char *dups;
c044fabd 6881 char *end = memchr (start, '\0', max);
dc810e39 6882 size_t len;
252b5132
RH		 6883
6884 if (end == NULL)
6885 len = max;
6886 else
6887 len = end - start;
6888
217aa764 6889 dups = bfd_alloc (abfd, len + 1);
dc810e39 6890 if (dups == NULL)
252b5132
RH		 6891 return NULL;
6892
dc810e39
AM		 6893 memcpy (dups, start, len);
6894 dups[len] = '\0';
252b5132 6895
dc810e39 6896 return dups;
252b5132
RH		 6897}
6898
bb0082d6 6899#if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
b34976b6 6900static bfd_boolean
217aa764 6901elfcore_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
252b5132 6902{
4a938328
MS		 6903 if (note->descsz == sizeof (elfcore_psinfo_t))
6904 {
6905 elfcore_psinfo_t psinfo;
252b5132 6906
7ee38065 6907 memcpy (&psinfo, note->descdata, sizeof (psinfo));
252b5132 6908
4a938328 6909 elf_tdata (abfd)->core_program
936e320b
AM		 6910 = _bfd_elfcore_strndup (abfd, psinfo.pr_fname,
6911 sizeof (psinfo.pr_fname));
252b5132 6912
4a938328 6913 elf_tdata (abfd)->core_command
936e320b
AM		 6914 = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs,
6915 sizeof (psinfo.pr_psargs));
4a938328 6916 }
7ee38065 6917#if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T)
4a938328
MS		 6918 else if (note->descsz == sizeof (elfcore_psinfo32_t))
6919 {
6920 /* 64-bit host, 32-bit corefile */
6921 elfcore_psinfo32_t psinfo;
6922
7ee38065 6923 memcpy (&psinfo, note->descdata, sizeof (psinfo));
252b5132 6924
4a938328 6925 elf_tdata (abfd)->core_program
936e320b
AM		 6926 = _bfd_elfcore_strndup (abfd, psinfo.pr_fname,
6927 sizeof (psinfo.pr_fname));
4a938328
MS		 6928
6929 elf_tdata (abfd)->core_command
936e320b
AM		 6930 = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs,
6931 sizeof (psinfo.pr_psargs));
4a938328
MS		 6932 }
6933#endif
6934
6935 else
6936 {
6937 /* Fail - we don't know how to handle any other
6938 note size (ie. data object type). */
b34976b6 6939 return TRUE;
4a938328 6940 }
252b5132
RH		 6941
6942 /* Note that for some reason, a spurious space is tacked
6943 onto the end of the args in some (at least one anyway)
c044fabd 6944 implementations, so strip it off if it exists. */
252b5132
RH		 6945
6946 {
c044fabd 6947 char *command = elf_tdata (abfd)->core_command;
252b5132
RH		 6948 int n = strlen (command);
6949
6950 if (0 < n && command[n - 1] == ' ')
6951 command[n - 1] = '\0';
6952 }
6953
b34976b6 6954 return TRUE;
252b5132
RH		 6955}
6956#endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */
6957
252b5132 6958#if defined (HAVE_PSTATUS_T)
b34976b6 6959static bfd_boolean
217aa764 6960elfcore_grok_pstatus (bfd *abfd, Elf_Internal_Note *note)
252b5132 6961{
f572a39d
AM		 6962 if (note->descsz == sizeof (pstatus_t)
6963#if defined (HAVE_PXSTATUS_T)
6964 || note->descsz == sizeof (pxstatus_t)
6965#endif
6966 )
4a938328
MS		 6967 {
6968 pstatus_t pstat;
252b5132 6969
4a938328 6970 memcpy (&pstat, note->descdata, sizeof (pstat));
252b5132 6971
4a938328
MS		 6972 elf_tdata (abfd)->core_pid = pstat.pr_pid;
6973 }
7ee38065 6974#if defined (HAVE_PSTATUS32_T)
4a938328
MS		 6975 else if (note->descsz == sizeof (pstatus32_t))
6976 {
6977 /* 64-bit host, 32-bit corefile */
6978 pstatus32_t pstat;
252b5132 6979
4a938328 6980 memcpy (&pstat, note->descdata, sizeof (pstat));
252b5132 6981
4a938328
MS		 6982 elf_tdata (abfd)->core_pid = pstat.pr_pid;
6983 }
6984#endif
252b5132
RH		 6985 /* Could grab some more details from the "representative"
6986 lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an
c044fabd 6987 NT_LWPSTATUS note, presumably. */
252b5132 6988
b34976b6 6989 return TRUE;
252b5132
RH		 6990}
6991#endif /* defined (HAVE_PSTATUS_T) */
6992
252b5132 6993#if defined (HAVE_LWPSTATUS_T)
b34976b6 6994static bfd_boolean
217aa764 6995elfcore_grok_lwpstatus (bfd *abfd, Elf_Internal_Note *note)
252b5132
RH		 6996{
6997 lwpstatus_t lwpstat;
6998 char buf[100];
c044fabd 6999 char *name;
d4c88bbb 7000 size_t len;
c044fabd 7001 asection *sect;
252b5132 7002
f572a39d
AM		 7003 if (note->descsz != sizeof (lwpstat)
7004#if defined (HAVE_LWPXSTATUS_T)
7005 && note->descsz != sizeof (lwpxstatus_t)
7006#endif
7007 )
b34976b6 7008 return TRUE;
252b5132
RH		 7009
7010 memcpy (&lwpstat, note->descdata, sizeof (lwpstat));
7011
7012 elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid;
7013 elf_tdata (abfd)->core_signal = lwpstat.pr_cursig;
7014
c044fabd 7015 /* Make a ".reg/999" section. */
252b5132
RH		 7016
7017 sprintf (buf, ".reg/%d", elfcore_make_pid (abfd));
d4c88bbb 7018 len = strlen (buf) + 1;
217aa764 7019 name = bfd_alloc (abfd, len);
252b5132 7020 if (name == NULL)
b34976b6 7021 return FALSE;
d4c88bbb 7022 memcpy (name, buf, len);
252b5132 7023
62f3bb11 7024 sect = bfd_make_section_anyway (abfd, name);
252b5132 7025 if (sect == NULL)
b34976b6 7026 return FALSE;
252b5132
RH		 7027
7028#if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
eea6121a 7029 sect->size = sizeof (lwpstat.pr_context.uc_mcontext.gregs);
252b5132
RH		 7030 sect->filepos = note->descpos
7031 + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs);
7032#endif
7033
7034#if defined (HAVE_LWPSTATUS_T_PR_REG)
eea6121a 7035 sect->size = sizeof (lwpstat.pr_reg);
252b5132
RH		 7036 sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg);
7037#endif
7038
7039 sect->flags = SEC_HAS_CONTENTS;
7040 sect->alignment_power = 2;
7041
7042 if (!elfcore_maybe_make_sect (abfd, ".reg", sect))
b34976b6 7043 return FALSE;
252b5132
RH		 7044
7045 /* Make a ".reg2/999" section */
7046
7047 sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd));
d4c88bbb 7048 len = strlen (buf) + 1;
217aa764 7049 name = bfd_alloc (abfd, len);
252b5132 7050 if (name == NULL)
b34976b6 7051 return FALSE;
d4c88bbb 7052 memcpy (name, buf, len);
252b5132 7053
62f3bb11 7054 sect = bfd_make_section_anyway (abfd, name);
252b5132 7055 if (sect == NULL)
b34976b6 7056 return FALSE;
252b5132
RH		 7057
7058#if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
eea6121a 7059 sect->size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs);
252b5132
RH		 7060 sect->filepos = note->descpos
7061 + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs);
7062#endif
7063
7064#if defined (HAVE_LWPSTATUS_T_PR_FPREG)
eea6121a 7065 sect->size = sizeof (lwpstat.pr_fpreg);
252b5132
RH		 7066 sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg);
7067#endif
7068
7069 sect->flags = SEC_HAS_CONTENTS;
7070 sect->alignment_power = 2;
7071
936e320b 7072 return elfcore_maybe_make_sect (abfd, ".reg2", sect);
252b5132
RH		 7073}
7074#endif /* defined (HAVE_LWPSTATUS_T) */
7075
16e9c715 7076#if defined (HAVE_WIN32_PSTATUS_T)
b34976b6 7077static bfd_boolean
217aa764 7078elfcore_grok_win32pstatus (bfd *abfd, Elf_Internal_Note *note)
16e9c715
NC		 7079{
7080 char buf[30];
c044fabd 7081 char *name;
d4c88bbb 7082 size_t len;
c044fabd 7083 asection *sect;
16e9c715
NC		 7084 win32_pstatus_t pstatus;
7085
7086 if (note->descsz < sizeof (pstatus))
b34976b6 7087 return TRUE;
16e9c715 7088
e8eab623 7089 memcpy (&pstatus, note->descdata, sizeof (pstatus));
c044fabd
KH		 7090
7091 switch (pstatus.data_type)
16e9c715
NC		 7092 {
7093 case NOTE_INFO_PROCESS:
7094 /* FIXME: need to add ->core_command. */
7095 elf_tdata (abfd)->core_signal = pstatus.data.process_info.signal;
7096 elf_tdata (abfd)->core_pid = pstatus.data.process_info.pid;
c044fabd 7097 break;
16e9c715
NC		 7098
7099 case NOTE_INFO_THREAD:
7100 /* Make a ".reg/999" section. */
7101 sprintf (buf, ".reg/%d", pstatus.data.thread_info.tid);
c044fabd 7102
d4c88bbb 7103 len = strlen (buf) + 1;
217aa764 7104 name = bfd_alloc (abfd, len);
16e9c715 7105 if (name == NULL)
b34976b6 7106 return FALSE;
c044fabd 7107
d4c88bbb 7108 memcpy (name, buf, len);
16e9c715 7109
62f3bb11 7110 sect = bfd_make_section_anyway (abfd, name);
16e9c715 7111 if (sect == NULL)
b34976b6 7112 return FALSE;
c044fabd 7113
eea6121a 7114 sect->size = sizeof (pstatus.data.thread_info.thread_context);
079e9a2f
AM		 7115 sect->filepos = (note->descpos
7116 + offsetof (struct win32_pstatus,
7117 data.thread_info.thread_context));
16e9c715
NC		 7118 sect->flags = SEC_HAS_CONTENTS;
7119 sect->alignment_power = 2;
7120
7121 if (pstatus.data.thread_info.is_active_thread)
7122 if (! elfcore_maybe_make_sect (abfd, ".reg", sect))
b34976b6 7123 return FALSE;
16e9c715
NC		 7124 break;
7125
7126 case NOTE_INFO_MODULE:
7127 /* Make a ".module/xxxxxxxx" section. */
c044fabd
KH		 7128 sprintf (buf, ".module/%08x", pstatus.data.module_info.base_address);
7129
d4c88bbb 7130 len = strlen (buf) + 1;
217aa764 7131 name = bfd_alloc (abfd, len);
16e9c715 7132 if (name == NULL)
b34976b6 7133 return FALSE;
c044fabd 7134
d4c88bbb 7135 memcpy (name, buf, len);
252b5132 7136
62f3bb11 7137 sect = bfd_make_section_anyway (abfd, name);
c044fabd 7138
16e9c715 7139 if (sect == NULL)
b34976b6 7140 return FALSE;
c044fabd 7141
eea6121a 7142 sect->size = note->descsz;
16e9c715
NC		 7143 sect->filepos = note->descpos;
7144 sect->flags = SEC_HAS_CONTENTS;
7145 sect->alignment_power = 2;
7146 break;
7147
7148 default:
b34976b6 7149 return TRUE;
16e9c715
NC		 7150 }
7151
b34976b6 7152 return TRUE;
16e9c715
NC		 7153}
7154#endif /* HAVE_WIN32_PSTATUS_T */
252b5132 7155
b34976b6 7156static bfd_boolean
217aa764 7157elfcore_grok_note (bfd *abfd, Elf_Internal_Note *note)
252b5132 7158{
9c5bfbb7 7159 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
bb0082d6 7160
252b5132
RH		 7161 switch (note->type)
7162 {
7163 default:
b34976b6 7164 return TRUE;
252b5132 7165
252b5132 7166 case NT_PRSTATUS:
bb0082d6
AM		 7167 if (bed->elf_backend_grok_prstatus)
7168 if ((*bed->elf_backend_grok_prstatus) (abfd, note))
b34976b6 7169 return TRUE;
bb0082d6 7170#if defined (HAVE_PRSTATUS_T)
252b5132 7171 return elfcore_grok_prstatus (abfd, note);
bb0082d6 7172#else
b34976b6 7173 return TRUE;
252b5132
RH		 7174#endif
7175
7176#if defined (HAVE_PSTATUS_T)
7177 case NT_PSTATUS:
7178 return elfcore_grok_pstatus (abfd, note);
7179#endif
7180
7181#if defined (HAVE_LWPSTATUS_T)
7182 case NT_LWPSTATUS:
7183 return elfcore_grok_lwpstatus (abfd, note);
7184#endif
7185
7186 case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */
7187 return elfcore_grok_prfpreg (abfd, note);
7188
16e9c715 7189#if defined (HAVE_WIN32_PSTATUS_T)
c044fabd 7190 case NT_WIN32PSTATUS:
16e9c715
NC		 7191 return elfcore_grok_win32pstatus (abfd, note);
7192#endif
7193
c044fabd 7194 case NT_PRXFPREG: /* Linux SSE extension */
e377ab71
MK		 7195 if (note->namesz == 6
7196 && strcmp (note->namedata, "LINUX") == 0)
ff08c6bb
JB		 7197 return elfcore_grok_prxfpreg (abfd, note);
7198 else
b34976b6 7199 return TRUE;
ff08c6bb 7200
252b5132
RH		 7201 case NT_PRPSINFO:
7202 case NT_PSINFO:
bb0082d6
AM		 7203 if (bed->elf_backend_grok_psinfo)
7204 if ((*bed->elf_backend_grok_psinfo) (abfd, note))
b34976b6 7205 return TRUE;
bb0082d6 7206#if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
252b5132 7207 return elfcore_grok_psinfo (abfd, note);
bb0082d6 7208#else
b34976b6 7209 return TRUE;
252b5132 7210#endif
3333a7c3
RM		 7211
7212 case NT_AUXV:
7213 {
62f3bb11 7214 asection *sect = bfd_make_section_anyway (abfd, ".auxv");
3333a7c3
RM		 7215
7216 if (sect == NULL)
7217 return FALSE;
eea6121a 7218 sect->size = note->descsz;
3333a7c3
RM		 7219 sect->filepos = note->descpos;
7220 sect->flags = SEC_HAS_CONTENTS;
7221 sect->alignment_power = 1 + bfd_get_arch_size (abfd) / 32;
7222
7223 return TRUE;
7224 }
252b5132
RH		 7225 }
7226}
7227
b34976b6 7228static bfd_boolean
217aa764 7229elfcore_netbsd_get_lwpid (Elf_Internal_Note *note, int *lwpidp)
50b2bdb7
AM		 7230{
7231 char *cp;
7232
7233 cp = strchr (note->namedata, '@');
7234 if (cp != NULL)
7235 {
d2b64500 7236 *lwpidp = atoi(cp + 1);
b34976b6 7237 return TRUE;
50b2bdb7 7238 }
b34976b6 7239 return FALSE;
50b2bdb7
AM		 7240}
7241
b34976b6 7242static bfd_boolean
217aa764 7243elfcore_grok_netbsd_procinfo (bfd *abfd, Elf_Internal_Note *note)
50b2bdb7
AM		 7244{
7245
7246 /* Signal number at offset 0x08. */
7247 elf_tdata (abfd)->core_signal
7248 = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08);
7249
7250 /* Process ID at offset 0x50. */
7251 elf_tdata (abfd)->core_pid
7252 = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50);
7253
7254 /* Command name at 0x7c (max 32 bytes, including nul). */
7255 elf_tdata (abfd)->core_command
7256 = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31);
7257
7720ba9f
MK		 7258 return elfcore_make_note_pseudosection (abfd, ".note.netbsdcore.procinfo",
7259 note);
50b2bdb7
AM		 7260}
7261
b34976b6 7262static bfd_boolean
217aa764 7263elfcore_grok_netbsd_note (bfd *abfd, Elf_Internal_Note *note)
50b2bdb7
AM		 7264{
7265 int lwp;
7266
7267 if (elfcore_netbsd_get_lwpid (note, &lwp))
7268 elf_tdata (abfd)->core_lwpid = lwp;
7269
b4db1224 7270 if (note->type == NT_NETBSDCORE_PROCINFO)
50b2bdb7
AM		 7271 {
7272 /* NetBSD-specific core "procinfo". Note that we expect to
7273 find this note before any of the others, which is fine,
7274 since the kernel writes this note out first when it
7275 creates a core file. */
47d9a591 7276
50b2bdb7
AM		 7277 return elfcore_grok_netbsd_procinfo (abfd, note);
7278 }
7279
b4db1224
JT		 7280 /* As of Jan 2002 there are no other machine-independent notes
7281 defined for NetBSD core files. If the note type is less
7282 than the start of the machine-dependent note types, we don't
7283 understand it. */
47d9a591 7284
b4db1224 7285 if (note->type < NT_NETBSDCORE_FIRSTMACH)
b34976b6 7286 return TRUE;
50b2bdb7
AM		 7287
7288
7289 switch (bfd_get_arch (abfd))
7290 {
7291 /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and
7292 PT_GETFPREGS == mach+2. */
7293
7294 case bfd_arch_alpha:
7295 case bfd_arch_sparc:
7296 switch (note->type)
7297 {
b4db1224 7298 case NT_NETBSDCORE_FIRSTMACH+0:
50b2bdb7
AM		 7299 return elfcore_make_note_pseudosection (abfd, ".reg", note);
7300
b4db1224 7301 case NT_NETBSDCORE_FIRSTMACH+2:
50b2bdb7
AM		 7302 return elfcore_make_note_pseudosection (abfd, ".reg2", note);
7303
7304 default:
b34976b6 7305 return TRUE;
50b2bdb7
AM		 7306 }
7307
7308 /* On all other arch's, PT_GETREGS == mach+1 and
7309 PT_GETFPREGS == mach+3. */
7310
7311 default:
7312 switch (note->type)
7313 {
b4db1224 7314 case NT_NETBSDCORE_FIRSTMACH+1:
50b2bdb7
AM		 7315 return elfcore_make_note_pseudosection (abfd, ".reg", note);
7316
b4db1224 7317 case NT_NETBSDCORE_FIRSTMACH+3:
50b2bdb7
AM		 7318 return elfcore_make_note_pseudosection (abfd, ".reg2", note);
7319
7320 default:
b34976b6 7321 return TRUE;
50b2bdb7
AM		 7322 }
7323 }
7324 /* NOTREACHED */
7325}
7326
07c6e936 7327static bfd_boolean
217aa764 7328elfcore_grok_nto_status (bfd *abfd, Elf_Internal_Note *note, pid_t *tid)
07c6e936
NC		 7329{
7330 void *ddata = note->descdata;
7331 char buf[100];
7332 char *name;
7333 asection *sect;
f8843e87
AM		 7334 short sig;
7335 unsigned flags;
07c6e936
NC		 7336
7337 /* nto_procfs_status 'pid' field is at offset 0. */
7338 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, (bfd_byte *) ddata);
7339
f8843e87
AM		 7340 /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */
7341 *tid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4);
7342
7343 /* nto_procfs_status 'flags' field is at offset 8. */
7344 flags = bfd_get_32 (abfd, (bfd_byte *) ddata + 8);
07c6e936
NC		 7345
7346 /* nto_procfs_status 'what' field is at offset 14. */
f8843e87
AM		 7347 if ((sig = bfd_get_16 (abfd, (bfd_byte *) ddata + 14)) > 0)
7348 {
7349 elf_tdata (abfd)->core_signal = sig;
7350 elf_tdata (abfd)->core_lwpid = *tid;
7351 }
07c6e936 7352
f8843e87
AM		 7353 /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores
7354 do not come from signals so we make sure we set the current
7355 thread just in case. */
7356 if (flags & 0x00000080)
7357 elf_tdata (abfd)->core_lwpid = *tid;
07c6e936
NC		 7358
7359 /* Make a ".qnx_core_status/%d" section. */
7360 sprintf (buf, ".qnx_core_status/%d", *tid);
7361
217aa764 7362 name = bfd_alloc (abfd, strlen (buf) + 1);
07c6e936
NC		 7363 if (name == NULL)
7364 return FALSE;
7365 strcpy (name, buf);
7366
62f3bb11 7367 sect = bfd_make_section_anyway (abfd, name);
07c6e936
NC		 7368 if (sect == NULL)
7369 return FALSE;
7370
eea6121a 7371 sect->size = note->descsz;
07c6e936
NC		 7372 sect->filepos = note->descpos;
7373 sect->flags = SEC_HAS_CONTENTS;
7374 sect->alignment_power = 2;
7375
7376 return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect));
7377}
7378
7379static bfd_boolean
217aa764 7380elfcore_grok_nto_gregs (bfd *abfd, Elf_Internal_Note *note, pid_t tid)
07c6e936
NC		 7381{
7382 char buf[100];
7383 char *name;
7384 asection *sect;
7385
7386 /* Make a ".reg/%d" section. */
7387 sprintf (buf, ".reg/%d", tid);
7388
217aa764 7389 name = bfd_alloc (abfd, strlen (buf) + 1);
07c6e936
NC		 7390 if (name == NULL)
7391 return FALSE;
7392 strcpy (name, buf);
7393
62f3bb11 7394 sect = bfd_make_section_anyway (abfd, name);
07c6e936
NC		 7395 if (sect == NULL)
7396 return FALSE;
7397
eea6121a 7398 sect->size = note->descsz;
07c6e936
NC		 7399 sect->filepos = note->descpos;
7400 sect->flags = SEC_HAS_CONTENTS;
7401 sect->alignment_power = 2;
7402
f8843e87
AM		 7403 /* This is the current thread. */
7404 if (elf_tdata (abfd)->core_lwpid == tid)
7405 return elfcore_maybe_make_sect (abfd, ".reg", sect);
7406
7407 return TRUE;
07c6e936
NC		 7408}
7409
7410#define BFD_QNT_CORE_INFO 7
7411#define BFD_QNT_CORE_STATUS 8
7412#define BFD_QNT_CORE_GREG 9
7413#define BFD_QNT_CORE_FPREG 10
7414
7415static bfd_boolean
217aa764 7416elfcore_grok_nto_note (bfd *abfd, Elf_Internal_Note *note)
07c6e936
NC		 7417{
7418 /* Every GREG section has a STATUS section before it. Store the
811072d8 7419 tid from the previous call to pass down to the next gregs
07c6e936
NC		 7420 function. */
7421 static pid_t tid = 1;
7422
7423 switch (note->type)
7424 {
7425 case BFD_QNT_CORE_INFO: return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note);
7426 case BFD_QNT_CORE_STATUS: return elfcore_grok_nto_status (abfd, note, &tid);
7427 case BFD_QNT_CORE_GREG: return elfcore_grok_nto_gregs (abfd, note, tid);
7428 case BFD_QNT_CORE_FPREG: return elfcore_grok_prfpreg (abfd, note);
7429 default: return TRUE;
7430 }
7431}
7432
7c76fa91
MS		 7433/* Function: elfcore_write_note
7434
47d9a591 7435 Inputs:
7c76fa91
MS		 7436 buffer to hold note
7437 name of note
7438 type of note
7439 data for note
7440 size of data for note
7441
7442 Return:
7443 End of buffer containing note. */
7444
7445char *
217aa764
AM		 7446elfcore_write_note (bfd *abfd,
7447 char *buf,
7448 int *bufsiz,
7449 const char *name,
7450 int type,
7451 const void *input,
7452 int size)
7c76fa91
MS		 7453{
7454 Elf_External_Note *xnp;
d4c88bbb
AM		 7455 size_t namesz;
7456 size_t pad;
7457 size_t newspace;
7c76fa91
MS		 7458 char *p, *dest;
7459
d4c88bbb
AM		 7460 namesz = 0;
7461 pad = 0;
7462 if (name != NULL)
7463 {
9c5bfbb7 7464 const struct elf_backend_data *bed;
d4c88bbb
AM		 7465
7466 namesz = strlen (name) + 1;
7467 bed = get_elf_backend_data (abfd);
45d6a902 7468 pad = -namesz & ((1 << bed->s->log_file_align) - 1);
d4c88bbb
AM		 7469 }
7470
5de3bf90 7471 newspace = 12 + namesz + pad + size;
d4c88bbb 7472
7c76fa91
MS		 7473 p = realloc (buf, *bufsiz + newspace);
7474 dest = p + *bufsiz;
7475 *bufsiz += newspace;
7476 xnp = (Elf_External_Note *) dest;
7477 H_PUT_32 (abfd, namesz, xnp->namesz);
7478 H_PUT_32 (abfd, size, xnp->descsz);
7479 H_PUT_32 (abfd, type, xnp->type);
d4c88bbb
AM		 7480 dest = xnp->name;
7481 if (name != NULL)
7482 {
7483 memcpy (dest, name, namesz);
7484 dest += namesz;
7485 while (pad != 0)
7486 {
7487 *dest++ = '\0';
7488 --pad;
7489 }
7490 }
7491 memcpy (dest, input, size);
7c76fa91
MS		 7492 return p;
7493}
7494
7495#if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
7496char *
217aa764
AM		 7497elfcore_write_prpsinfo (bfd *abfd,
7498 char *buf,
7499 int *bufsiz,
7500 const char *fname,
7501 const char *psargs)
7c76fa91
MS		 7502{
7503 int note_type;
7504 char *note_name = "CORE";
7505
7506#if defined (HAVE_PSINFO_T)
7507 psinfo_t data;
7508 note_type = NT_PSINFO;
7509#else
7510 prpsinfo_t data;
7511 note_type = NT_PRPSINFO;
7512#endif
7513
7514 memset (&data, 0, sizeof (data));
7515 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
7516 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
47d9a591 7517 return elfcore_write_note (abfd, buf, bufsiz,
7c76fa91
MS		 7518 note_name, note_type, &data, sizeof (data));
7519}
7520#endif /* PSINFO_T or PRPSINFO_T */
7521
7522#if defined (HAVE_PRSTATUS_T)
7523char *
217aa764
AM		 7524elfcore_write_prstatus (bfd *abfd,
7525 char *buf,
7526 int *bufsiz,
7527 long pid,
7528 int cursig,
7529 const void *gregs)
7c76fa91
MS		 7530{
7531 prstatus_t prstat;
7532 char *note_name = "CORE";
7533
7534 memset (&prstat, 0, sizeof (prstat));
7535 prstat.pr_pid = pid;
7536 prstat.pr_cursig = cursig;
c106e334 7537 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
47d9a591 7538 return elfcore_write_note (abfd, buf, bufsiz,
7c76fa91
MS		 7539 note_name, NT_PRSTATUS, &prstat, sizeof (prstat));
7540}
7541#endif /* HAVE_PRSTATUS_T */
7542
51316059
MS		 7543#if defined (HAVE_LWPSTATUS_T)
7544char *
217aa764
AM		 7545elfcore_write_lwpstatus (bfd *abfd,
7546 char *buf,
7547 int *bufsiz,
7548 long pid,
7549 int cursig,
7550 const void *gregs)
51316059
MS		 7551{
7552 lwpstatus_t lwpstat;
7553 char *note_name = "CORE";
7554
7555 memset (&lwpstat, 0, sizeof (lwpstat));
7556 lwpstat.pr_lwpid = pid >> 16;
7557 lwpstat.pr_cursig = cursig;
7558#if defined (HAVE_LWPSTATUS_T_PR_REG)
7559 memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg));
7560#elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
7561#if !defined(gregs)
7562 memcpy (lwpstat.pr_context.uc_mcontext.gregs,
7563 gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs));
7564#else
7565 memcpy (lwpstat.pr_context.uc_mcontext.__gregs,
7566 gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs));
7567#endif
7568#endif
47d9a591 7569 return elfcore_write_note (abfd, buf, bufsiz, note_name,
51316059
MS		 7570 NT_LWPSTATUS, &lwpstat, sizeof (lwpstat));
7571}
7572#endif /* HAVE_LWPSTATUS_T */
7573
7c76fa91
MS		 7574#if defined (HAVE_PSTATUS_T)
7575char *
217aa764
AM		 7576elfcore_write_pstatus (bfd *abfd,
7577 char *buf,
7578 int *bufsiz,
7579 long pid,
7580 int cursig,
7581 const void *gregs)
7c76fa91
MS		 7582{
7583 pstatus_t pstat;
7584 char *note_name = "CORE";
7585
51316059
MS		 7586 memset (&pstat, 0, sizeof (pstat));
7587 pstat.pr_pid = pid & 0xffff;
47d9a591 7588 buf = elfcore_write_note (abfd, buf, bufsiz, note_name,
51316059
MS		 7589 NT_PSTATUS, &pstat, sizeof (pstat));
7590 return buf;
7c76fa91
MS		 7591}
7592#endif /* HAVE_PSTATUS_T */
7593
7594char *
217aa764
AM		 7595elfcore_write_prfpreg (bfd *abfd,
7596 char *buf,
7597 int *bufsiz,
7598 const void *fpregs,
7599 int size)
7c76fa91
MS		 7600{
7601 char *note_name = "CORE";
47d9a591 7602 return elfcore_write_note (abfd, buf, bufsiz,
7c76fa91
MS		 7603 note_name, NT_FPREGSET, fpregs, size);
7604}
7605
7606char *
217aa764
AM		 7607elfcore_write_prxfpreg (bfd *abfd,
7608 char *buf,
7609 int *bufsiz,
7610 const void *xfpregs,
7611 int size)
7c76fa91
MS		 7612{
7613 char *note_name = "LINUX";
47d9a591 7614 return elfcore_write_note (abfd, buf, bufsiz,
7c76fa91
MS		 7615 note_name, NT_PRXFPREG, xfpregs, size);
7616}
7617
b34976b6 7618static bfd_boolean
217aa764 7619elfcore_read_notes (bfd *abfd, file_ptr offset, bfd_size_type size)
252b5132 7620{
c044fabd
KH		 7621 char *buf;
7622 char *p;
252b5132
RH		 7623
7624 if (size <= 0)
b34976b6 7625 return TRUE;
252b5132 7626
dc810e39 7627 if (bfd_seek (abfd, offset, SEEK_SET) != 0)
b34976b6 7628 return FALSE;
252b5132 7629
dc810e39 7630 buf = bfd_malloc (size);
252b5132 7631 if (buf == NULL)
b34976b6 7632 return FALSE;
252b5132 7633
dc810e39 7634 if (bfd_bread (buf, size, abfd) != size)
252b5132
RH		 7635 {
7636 error:
7637 free (buf);
b34976b6 7638 return FALSE;
252b5132
RH		 7639 }
7640
7641 p = buf;
7642 while (p < buf + size)
7643 {
c044fabd
KH		 7644 /* FIXME: bad alignment assumption. */
7645 Elf_External_Note *xnp = (Elf_External_Note *) p;
252b5132
RH		 7646 Elf_Internal_Note in;
7647
dc810e39 7648 in.type = H_GET_32 (abfd, xnp->type);
252b5132 7649
dc810e39 7650 in.namesz = H_GET_32 (abfd, xnp->namesz);
252b5132
RH		 7651 in.namedata = xnp->name;
7652
dc810e39 7653 in.descsz = H_GET_32 (abfd, xnp->descsz);
252b5132
RH		 7654 in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4);
7655 in.descpos = offset + (in.descdata - buf);
7656
50b2bdb7
AM		 7657 if (strncmp (in.namedata, "NetBSD-CORE", 11) == 0)
7658 {
7659 if (! elfcore_grok_netbsd_note (abfd, &in))
7660 goto error;
7661 }
07c6e936
NC		 7662 else if (strncmp (in.namedata, "QNX", 3) == 0)
7663 {
7664 if (! elfcore_grok_nto_note (abfd, &in))
7665 goto error;
7666 }
50b2bdb7
AM		 7667 else
7668 {
7669 if (! elfcore_grok_note (abfd, &in))
7670 goto error;
7671 }
252b5132
RH		 7672
7673 p = in.descdata + BFD_ALIGN (in.descsz, 4);
7674 }
7675
7676 free (buf);
b34976b6 7677 return TRUE;
252b5132 7678}
98d8431c
JB		 7679\f
7680/* Providing external access to the ELF program header table. */
7681
7682/* Return an upper bound on the number of bytes required to store a
7683 copy of ABFD's program header table entries. Return -1 if an error
7684 occurs; bfd_get_error will return an appropriate code. */
c044fabd 7685
98d8431c 7686long
217aa764 7687bfd_get_elf_phdr_upper_bound (bfd *abfd)
98d8431c
JB		 7688{
7689 if (abfd->xvec->flavour != bfd_target_elf_flavour)
7690 {
7691 bfd_set_error (bfd_error_wrong_format);
7692 return -1;
7693 }
7694
936e320b 7695 return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr);
98d8431c
JB		 7696}
7697
98d8431c
JB		 7698/* Copy ABFD's program header table entries to *PHDRS. The entries
7699 will be stored as an array of Elf_Internal_Phdr structures, as
7700 defined in include/elf/internal.h. To find out how large the
7701 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
7702
7703 Return the number of program header table entries read, or -1 if an
7704 error occurs; bfd_get_error will return an appropriate code. */
c044fabd 7705
98d8431c 7706int
217aa764 7707bfd_get_elf_phdrs (bfd *abfd, void *phdrs)
98d8431c
JB		 7708{
7709 int num_phdrs;
7710
7711 if (abfd->xvec->flavour != bfd_target_elf_flavour)
7712 {
7713 bfd_set_error (bfd_error_wrong_format);
7714 return -1;
7715 }
7716
7717 num_phdrs = elf_elfheader (abfd)->e_phnum;
c044fabd 7718 memcpy (phdrs, elf_tdata (abfd)->phdr,
98d8431c
JB		 7719 num_phdrs * sizeof (Elf_Internal_Phdr));
7720
7721 return num_phdrs;
7722}
ae4221d7
L		 7723
7724void
217aa764 7725_bfd_elf_sprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, char *buf, bfd_vma value)
ae4221d7 7726{
d3b05f8d 7727#ifdef BFD64
ae4221d7
L		 7728 Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
7729
7730 i_ehdrp = elf_elfheader (abfd);
7731 if (i_ehdrp == NULL)
7732 sprintf_vma (buf, value);
7733 else
7734 {
7735 if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64)
cc55aec9 7736 {
ae4221d7 7737#if BFD_HOST_64BIT_LONG
cc55aec9 7738 sprintf (buf, "%016lx", value);
ae4221d7 7739#else
cc55aec9
AM		 7740 sprintf (buf, "%08lx%08lx", _bfd_int64_high (value),
7741 _bfd_int64_low (value));
ae4221d7 7742#endif
cc55aec9 7743 }
ae4221d7
L		 7744 else
7745 sprintf (buf, "%08lx", (unsigned long) (value & 0xffffffff));
7746 }
d3b05f8d
L		 7747#else
7748 sprintf_vma (buf, value);
7749#endif
ae4221d7
L		 7750}
7751
7752void
217aa764 7753_bfd_elf_fprintf_vma (bfd *abfd ATTRIBUTE_UNUSED, void *stream, bfd_vma value)
ae4221d7 7754{
d3b05f8d 7755#ifdef BFD64
ae4221d7
L		 7756 Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
7757
7758 i_ehdrp = elf_elfheader (abfd);
7759 if (i_ehdrp == NULL)
7760 fprintf_vma ((FILE *) stream, value);
7761 else
7762 {
7763 if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64)
cc55aec9 7764 {
ae4221d7 7765#if BFD_HOST_64BIT_LONG
cc55aec9 7766 fprintf ((FILE *) stream, "%016lx", value);
ae4221d7 7767#else
cc55aec9
AM		 7768 fprintf ((FILE *) stream, "%08lx%08lx",
7769 _bfd_int64_high (value), _bfd_int64_low (value));
ae4221d7 7770#endif
cc55aec9 7771 }
ae4221d7
L		 7772 else
7773 fprintf ((FILE *) stream, "%08lx",
7774 (unsigned long) (value & 0xffffffff));
7775 }
d3b05f8d
L		 7776#else
7777 fprintf_vma ((FILE *) stream, value);
7778#endif
ae4221d7 7779}
db6751f2
JJ		 7780
7781enum elf_reloc_type_class
217aa764 7782_bfd_elf_reloc_type_class (const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED)
db6751f2
JJ		 7783{
7784 return reloc_class_normal;
7785}
f8df10f4 7786
47d9a591 7787/* For RELA architectures, return the relocation value for a
f8df10f4
JJ		 7788 relocation against a local symbol. */
7789
7790bfd_vma
217aa764
AM		 7791_bfd_elf_rela_local_sym (bfd *abfd,
7792 Elf_Internal_Sym *sym,
8517fae7 7793 asection **psec,
217aa764 7794 Elf_Internal_Rela *rel)
f8df10f4 7795{
8517fae7 7796 asection *sec = *psec;
f8df10f4
JJ		 7797 bfd_vma relocation;
7798
7799 relocation = (sec->output_section->vma
7800 + sec->output_offset
7801 + sym->st_value);
7802 if ((sec->flags & SEC_MERGE)
c629eae0 7803 && ELF_ST_TYPE (sym->st_info) == STT_SECTION
68bfbfcc 7804 && sec->sec_info_type == ELF_INFO_TYPE_MERGE)
f8df10f4 7805 {
f8df10f4 7806 rel->r_addend =
8517fae7 7807 _bfd_merged_section_offset (abfd, psec,
65765700 7808 elf_section_data (sec)->sec_info,
753731ee
AM		 7809 sym->st_value + rel->r_addend);
7810 if (sec != *psec)
7811 {
7812 /* If we have changed the section, and our original section is
7813 marked with SEC_EXCLUDE, it means that the original
7814 SEC_MERGE section has been completely subsumed in some
7815 other SEC_MERGE section. In this case, we need to leave
7816 some info around for --emit-relocs. */
7817 if ((sec->flags & SEC_EXCLUDE) != 0)
7818 sec->kept_section = *psec;
7819 sec = *psec;
7820 }
8517fae7
AM		 7821 rel->r_addend -= relocation;
7822 rel->r_addend += sec->output_section->vma + sec->output_offset;
f8df10f4
JJ		 7823 }
7824 return relocation;
7825}
c629eae0
JJ		 7826
7827bfd_vma
217aa764
AM		 7828_bfd_elf_rel_local_sym (bfd *abfd,
7829 Elf_Internal_Sym *sym,
7830 asection **psec,
7831 bfd_vma addend)
47d9a591 7832{
c629eae0
JJ		 7833 asection *sec = *psec;
7834
68bfbfcc 7835 if (sec->sec_info_type != ELF_INFO_TYPE_MERGE)
c629eae0
JJ		 7836 return sym->st_value + addend;
7837
7838 return _bfd_merged_section_offset (abfd, psec,
65765700 7839 elf_section_data (sec)->sec_info,
753731ee 7840 sym->st_value + addend);
c629eae0
JJ		 7841}
7842
7843bfd_vma
217aa764 7844_bfd_elf_section_offset (bfd *abfd,
92e4ec35 7845 struct bfd_link_info *info,
217aa764
AM		 7846 asection *sec,
7847 bfd_vma offset)
c629eae0 7848{
68bfbfcc 7849 switch (sec->sec_info_type)
65765700
JJ		 7850 {
7851 case ELF_INFO_TYPE_STABS:
eea6121a
AM		 7852 return _bfd_stab_section_offset (sec, elf_section_data (sec)->sec_info,
7853 offset);
65765700 7854 case ELF_INFO_TYPE_EH_FRAME:
92e4ec35 7855 return _bfd_elf_eh_frame_section_offset (abfd, info, sec, offset);
65765700
JJ		 7856 default:
7857 return offset;
7858 }
c629eae0 7859}
3333a7c3
RM		 7860\f
7861/* Create a new BFD as if by bfd_openr. Rather than opening a file,
7862 reconstruct an ELF file by reading the segments out of remote memory
7863 based on the ELF file header at EHDR_VMA and the ELF program headers it
7864 points to. If not null, *LOADBASEP is filled in with the difference
7865 between the VMAs from which the segments were read, and the VMAs the
7866 file headers (and hence BFD's idea of each section's VMA) put them at.
7867
7868 The function TARGET_READ_MEMORY is called to copy LEN bytes from the
7869 remote memory at target address VMA into the local buffer at MYADDR; it
7870 should return zero on success or an `errno' code on failure. TEMPL must
7871 be a BFD for an ELF target with the word size and byte order found in
7872 the remote memory. */
7873
7874bfd *
217aa764
AM		 7875bfd_elf_bfd_from_remote_memory
7876 (bfd *templ,
7877 bfd_vma ehdr_vma,
7878 bfd_vma *loadbasep,
7879 int (*target_read_memory) (bfd_vma, char *, int))
3333a7c3
RM		 7880{
7881 return (*get_elf_backend_data (templ)->elf_backend_bfd_from_remote_memory)
7882 (templ, ehdr_vma, loadbasep, target_read_memory);
7883}
4c45e5c9
JJ		 7884\f
7885long
c9727e01
AM		 7886_bfd_elf_get_synthetic_symtab (bfd *abfd,
7887 long symcount ATTRIBUTE_UNUSED,
7888 asymbol **syms ATTRIBUTE_UNUSED,
7889 long dynsymcount ATTRIBUTE_UNUSED,
7890 asymbol **dynsyms,
7891 asymbol **ret)
4c45e5c9
JJ		 7892{
7893 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
7894 asection *relplt;
7895 asymbol *s;
7896 const char *relplt_name;
7897 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
7898 arelent *p;
7899 long count, i, n;
7900 size_t size;
7901 Elf_Internal_Shdr *hdr;
7902 char *names;
7903 asection *plt;
7904
90e3cdf2
JJ		 7905 if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0)
7906 return 0;
7907
4c45e5c9
JJ		 7908 *ret = NULL;
7909 if (!bed->plt_sym_val)
7910 return 0;
7911
7912 relplt_name = bed->relplt_name;
7913 if (relplt_name == NULL)
7914 relplt_name = bed->default_use_rela_p ? ".rela.plt" : ".rel.plt";
7915 relplt = bfd_get_section_by_name (abfd, relplt_name);
7916 if (relplt == NULL)
7917 return 0;
7918
7919 hdr = &elf_section_data (relplt)->this_hdr;
7920 if (hdr->sh_link != elf_dynsymtab (abfd)
7921 || (hdr->sh_type != SHT_REL && hdr->sh_type != SHT_RELA))
7922 return 0;
7923
7924 plt = bfd_get_section_by_name (abfd, ".plt");
7925 if (plt == NULL)
7926 return 0;
7927
7928 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
c9727e01 7929 if (! (*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
4c45e5c9
JJ		 7930 return -1;
7931
eea6121a 7932 count = relplt->size / hdr->sh_entsize;
4c45e5c9
JJ		 7933 size = count * sizeof (asymbol);
7934 p = relplt->relocation;
7935 for (i = 0; i < count; i++, s++, p++)
7936 size += strlen ((*p->sym_ptr_ptr)->name) + sizeof ("@plt");
7937
7938 s = *ret = bfd_malloc (size);
7939 if (s == NULL)
7940 return -1;
7941
7942 names = (char *) (s + count);
7943 p = relplt->relocation;
7944 n = 0;
7945 for (i = 0; i < count; i++, s++, p++)
7946 {
7947 size_t len;
7948 bfd_vma addr;
7949
7950 addr = bed->plt_sym_val (i, plt, p);
7951 if (addr == (bfd_vma) -1)
7952 continue;
7953
7954 *s = **p->sym_ptr_ptr;
7955 s->section = plt;
7956 s->value = addr - plt->vma;
7957 s->name = names;
7958 len = strlen ((*p->sym_ptr_ptr)->name);
7959 memcpy (names, (*p->sym_ptr_ptr)->name, len);
7960 names += len;
7961 memcpy (names, "@plt", sizeof ("@plt"));
7962 names += sizeof ("@plt");
7963 ++n;
7964 }
7965
7966 return n;
7967}
3d7f7666
L		 7968
7969/* Sort symbol by binding and section. We want to put definitions
7970 sorted by section at the beginning. */
7971
7972static int
7973elf_sort_elf_symbol (const void *arg1, const void *arg2)
7974{
7975 const Elf_Internal_Sym *s1;
7976 const Elf_Internal_Sym *s2;
7977 int shndx;
7978
7979 /* Make sure that undefined symbols are at the end. */
7980 s1 = (const Elf_Internal_Sym *) arg1;
7981 if (s1->st_shndx == SHN_UNDEF)
7982 return 1;
7983 s2 = (const Elf_Internal_Sym *) arg2;
7984 if (s2->st_shndx == SHN_UNDEF)
7985 return -1;
7986
7987 /* Sorted by section index. */
7988 shndx = s1->st_shndx - s2->st_shndx;
7989 if (shndx != 0)
7990 return shndx;
7991
7992 /* Sorted by binding. */
7993 return ELF_ST_BIND (s1->st_info) - ELF_ST_BIND (s2->st_info);
7994}
7995
7996struct elf_symbol
7997{
7998 Elf_Internal_Sym *sym;
7999 const char *name;
8000};
8001
8002static int
8003elf_sym_name_compare (const void *arg1, const void *arg2)
8004{
8005 const struct elf_symbol *s1 = (const struct elf_symbol *) arg1;
8006 const struct elf_symbol *s2 = (const struct elf_symbol *) arg2;
8007 return strcmp (s1->name, s2->name);
8008}
8009
8010/* Check if 2 sections define the same set of local and global
8011 symbols. */
8012
8013bfd_boolean
8014bfd_elf_match_symbols_in_sections (asection *sec1, asection *sec2)
8015{
8016 bfd *bfd1, *bfd2;
8017 const struct elf_backend_data *bed1, *bed2;
8018 Elf_Internal_Shdr *hdr1, *hdr2;
8019 bfd_size_type symcount1, symcount2;
8020 Elf_Internal_Sym *isymbuf1, *isymbuf2;
8021 Elf_Internal_Sym *isymstart1 = NULL, *isymstart2 = NULL, *isym;
8022 Elf_Internal_Sym *isymend;
8023 struct elf_symbol *symp, *symtable1 = NULL, *symtable2 = NULL;
8024 bfd_size_type count1, count2, i;
8025 int shndx1, shndx2;
8026 bfd_boolean result;
8027
8028 bfd1 = sec1->owner;
8029 bfd2 = sec2->owner;
8030
8031 /* If both are .gnu.linkonce sections, they have to have the same
8032 section name. */
8033 if (strncmp (sec1->name, ".gnu.linkonce",
8034 sizeof ".gnu.linkonce" - 1) == 0
8035 && strncmp (sec2->name, ".gnu.linkonce",
8036 sizeof ".gnu.linkonce" - 1) == 0)
8037 return strcmp (sec1->name + sizeof ".gnu.linkonce",
8038 sec2->name + sizeof ".gnu.linkonce") == 0;
8039
8040 /* Both sections have to be in ELF. */
8041 if (bfd_get_flavour (bfd1) != bfd_target_elf_flavour
8042 || bfd_get_flavour (bfd2) != bfd_target_elf_flavour)
8043 return FALSE;
8044
8045 if (elf_section_type (sec1) != elf_section_type (sec2))
8046 return FALSE;
8047
8048 if ((elf_section_flags (sec1) & SHF_GROUP) != 0
8049 && (elf_section_flags (sec2) & SHF_GROUP) != 0)
8050 {
8051 /* If both are members of section groups, they have to have the
8052 same group name. */
8053 if (strcmp (elf_group_name (sec1), elf_group_name (sec2)) != 0)
8054 return FALSE;
8055 }
8056
8057 shndx1 = _bfd_elf_section_from_bfd_section (bfd1, sec1);
8058 shndx2 = _bfd_elf_section_from_bfd_section (bfd2, sec2);
8059 if (shndx1 == -1 || shndx2 == -1)
8060 return FALSE;
8061
8062 bed1 = get_elf_backend_data (bfd1);
8063 bed2 = get_elf_backend_data (bfd2);
8064 hdr1 = &elf_tdata (bfd1)->symtab_hdr;
8065 symcount1 = hdr1->sh_size / bed1->s->sizeof_sym;
8066 hdr2 = &elf_tdata (bfd2)->symtab_hdr;
8067 symcount2 = hdr2->sh_size / bed2->s->sizeof_sym;
8068
8069 if (symcount1 == 0 || symcount2 == 0)
8070 return FALSE;
8071
8072 isymbuf1 = bfd_elf_get_elf_syms (bfd1, hdr1, symcount1, 0,
8073 NULL, NULL, NULL);
8074 isymbuf2 = bfd_elf_get_elf_syms (bfd2, hdr2, symcount2, 0,
8075 NULL, NULL, NULL);
8076
8077 result = FALSE;
8078 if (isymbuf1 == NULL || isymbuf2 == NULL)
8079 goto done;
8080
8081 /* Sort symbols by binding and section. Global definitions are at
8082 the beginning. */
8083 qsort (isymbuf1, symcount1, sizeof (Elf_Internal_Sym),
8084 elf_sort_elf_symbol);
8085 qsort (isymbuf2, symcount2, sizeof (Elf_Internal_Sym),
8086 elf_sort_elf_symbol);
8087
8088 /* Count definitions in the section. */
8089 count1 = 0;
8090 for (isym = isymbuf1, isymend = isym + symcount1;
8091 isym < isymend; isym++)
8092 {
8093 if (isym->st_shndx == (unsigned int) shndx1)
8094 {
8095 if (count1 == 0)
8096 isymstart1 = isym;
8097 count1++;
8098 }
8099
8100 if (count1 && isym->st_shndx != (unsigned int) shndx1)
8101 break;
8102 }
8103
8104 count2 = 0;
8105 for (isym = isymbuf2, isymend = isym + symcount2;
8106 isym < isymend; isym++)
8107 {
8108 if (isym->st_shndx == (unsigned int) shndx2)
8109 {
8110 if (count2 == 0)
8111 isymstart2 = isym;
8112 count2++;
8113 }
8114
8115 if (count2 && isym->st_shndx != (unsigned int) shndx2)
8116 break;
8117 }
8118
8119 if (count1 == 0 || count2 == 0 || count1 != count2)
8120 goto done;
8121
8122 symtable1 = bfd_malloc (count1 * sizeof (struct elf_symbol));
8123 symtable2 = bfd_malloc (count1 * sizeof (struct elf_symbol));
8124
8125 if (symtable1 == NULL || symtable2 == NULL)
8126 goto done;
8127
8128 symp = symtable1;
8129 for (isym = isymstart1, isymend = isym + count1;
8130 isym < isymend; isym++)
8131 {
8132 symp->sym = isym;
8133 symp->name = bfd_elf_string_from_elf_section (bfd1,
8134 hdr1->sh_link,
8135 isym->st_name);
8136 symp++;
8137 }
8138
8139 symp = symtable2;
8140 for (isym = isymstart2, isymend = isym + count1;
8141 isym < isymend; isym++)
8142 {
8143 symp->sym = isym;
8144 symp->name = bfd_elf_string_from_elf_section (bfd2,
8145 hdr2->sh_link,
8146 isym->st_name);
8147 symp++;
8148 }
8149
8150 /* Sort symbol by name. */
8151 qsort (symtable1, count1, sizeof (struct elf_symbol),
8152 elf_sym_name_compare);
8153 qsort (symtable2, count1, sizeof (struct elf_symbol),
8154 elf_sym_name_compare);
8155
8156 for (i = 0; i < count1; i++)
8157 /* Two symbols must have the same binding, type and name. */
8158 if (symtable1 [i].sym->st_info != symtable2 [i].sym->st_info
8159 || symtable1 [i].sym->st_other != symtable2 [i].sym->st_other
8160 || strcmp (symtable1 [i].name, symtable2 [i].name) != 0)
8161 goto done;
8162
8163 result = TRUE;
8164
8165done:
8166 if (symtable1)
8167 free (symtable1);
8168 if (symtable2)
8169 free (symtable2);
8170 if (isymbuf1)
8171 free (isymbuf1);
8172 if (isymbuf2)
8173 free (isymbuf2);
8174
8175 return result;
8176}
GDB Binutils - Deliverables
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