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Add some initial 64-bit DWARF support
[binutils.git] / bfd / elf.c
CommitLineData
252b5132 1/* ELF executable support for BFD.
f0abc2a1
AM		 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
3 2003 Free Software Foundation, Inc.
252b5132 4
5e8d7549 5 This file is part of BFD, the Binary File Descriptor library.
252b5132 6
5e8d7549
NC		 7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
252b5132 11
5e8d7549
NC		 12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
252b5132 16
5e8d7549 17 You should have received a copy of the GNU General Public License
b34976b6 18 along with this program; if not, write to the Free Software
5e8d7549 19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
252b5132 20
661a3fd4 21/* SECTION
47d9a591 22
252b5132
RH		 23 ELF backends
24
25 BFD support for ELF formats is being worked on.
26 Currently, the best supported back ends are for sparc and i386
27 (running svr4 or Solaris 2).
28
29 Documentation of the internals of the support code still needs
30 to be written. The code is changing quickly enough that we
661a3fd4 31 haven't bothered yet. */
252b5132 32
7ee38065
MS		 33/* For sparc64-cross-sparc32. */
34#define _SYSCALL32
252b5132
RH		 35#include "bfd.h"
36#include "sysdep.h"
37#include "bfdlink.h"
38#include "libbfd.h"
39#define ARCH_SIZE 0
40#include "elf-bfd.h"
e0e8c97f 41#include "libiberty.h"
252b5132
RH		 42
43static INLINE struct elf_segment_map *make_mapping
b34976b6
AM		 44 PARAMS ((bfd *, asection **, unsigned int, unsigned int, bfd_boolean));
45static bfd_boolean map_sections_to_segments
46 PARAMS ((bfd *));
47static int elf_sort_sections
48 PARAMS ((const PTR, const PTR));
49static bfd_boolean assign_file_positions_for_segments
50 PARAMS ((bfd *));
51static bfd_boolean assign_file_positions_except_relocs
52 PARAMS ((bfd *));
53static bfd_boolean prep_headers
54 PARAMS ((bfd *));
55static bfd_boolean swap_out_syms
56 PARAMS ((bfd *, struct bfd_strtab_hash **, int));
57static bfd_boolean copy_private_bfd_data
58 PARAMS ((bfd *, bfd *));
59static char *elf_read
60 PARAMS ((bfd *, file_ptr, bfd_size_type));
61static const char *group_signature
62 PARAMS ((bfd *, Elf_Internal_Shdr *));
63static bfd_boolean setup_group
64 PARAMS ((bfd *, Elf_Internal_Shdr *, asection *));
65static void merge_sections_remove_hook
66 PARAMS ((bfd *, asection *));
67static void elf_fake_sections
68 PARAMS ((bfd *, asection *, PTR));
69static bfd_boolean assign_section_numbers
70 PARAMS ((bfd *));
71static INLINE int sym_is_global
72 PARAMS ((bfd *, asymbol *));
73static bfd_boolean elf_map_symbols
74 PARAMS ((bfd *));
75static bfd_size_type get_program_header_size
76 PARAMS ((bfd *));
77static bfd_boolean elfcore_read_notes
78 PARAMS ((bfd *, file_ptr, bfd_size_type));
79static bfd_boolean elf_find_function
80 PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **,
81 const char **));
82static int elfcore_make_pid
83 PARAMS ((bfd *));
84static bfd_boolean elfcore_maybe_make_sect
85 PARAMS ((bfd *, char *, asection *));
86static bfd_boolean elfcore_make_note_pseudosection
87 PARAMS ((bfd *, char *, Elf_Internal_Note *));
88static bfd_boolean elfcore_grok_prfpreg
89 PARAMS ((bfd *, Elf_Internal_Note *));
90static bfd_boolean elfcore_grok_prxfpreg
91 PARAMS ((bfd *, Elf_Internal_Note *));
92static bfd_boolean elfcore_grok_note
93 PARAMS ((bfd *, Elf_Internal_Note *));
94static bfd_boolean elfcore_netbsd_get_lwpid
95 PARAMS ((Elf_Internal_Note *, int *));
96static bfd_boolean elfcore_grok_netbsd_procinfo
97 PARAMS ((bfd *, Elf_Internal_Note *));
98static bfd_boolean elfcore_grok_netbsd_note
99 PARAMS ((bfd *, Elf_Internal_Note *));
07c6e936
NC		 100static bfd_boolean elfcore_grok_nto_gregs
101 PARAMS ((bfd *, Elf_Internal_Note *, pid_t));
102static bfd_boolean elfcore_grok_nto_status
103 PARAMS ((bfd *, Elf_Internal_Note *, pid_t *));
104static bfd_boolean elfcore_grok_nto_note
105 PARAMS ((bfd *, Elf_Internal_Note *));
50b2bdb7 106
252b5132
RH		 107/* Swap version information in and out. The version information is
108 currently size independent. If that ever changes, this code will
109 need to move into elfcode.h. */
110
111/* Swap in a Verdef structure. */
112
113void
114_bfd_elf_swap_verdef_in (abfd, src, dst)
115 bfd *abfd;
116 const Elf_External_Verdef *src;
117 Elf_Internal_Verdef *dst;
118{
dc810e39
AM		 119 dst->vd_version = H_GET_16 (abfd, src->vd_version);
120 dst->vd_flags = H_GET_16 (abfd, src->vd_flags);
121 dst->vd_ndx = H_GET_16 (abfd, src->vd_ndx);
122 dst->vd_cnt = H_GET_16 (abfd, src->vd_cnt);
123 dst->vd_hash = H_GET_32 (abfd, src->vd_hash);
124 dst->vd_aux = H_GET_32 (abfd, src->vd_aux);
125 dst->vd_next = H_GET_32 (abfd, src->vd_next);
252b5132
RH		 126}
127
128/* Swap out a Verdef structure. */
129
130void
131_bfd_elf_swap_verdef_out (abfd, src, dst)
132 bfd *abfd;
133 const Elf_Internal_Verdef *src;
134 Elf_External_Verdef *dst;
135{
dc810e39
AM		 136 H_PUT_16 (abfd, src->vd_version, dst->vd_version);
137 H_PUT_16 (abfd, src->vd_flags, dst->vd_flags);
138 H_PUT_16 (abfd, src->vd_ndx, dst->vd_ndx);
139 H_PUT_16 (abfd, src->vd_cnt, dst->vd_cnt);
140 H_PUT_32 (abfd, src->vd_hash, dst->vd_hash);
141 H_PUT_32 (abfd, src->vd_aux, dst->vd_aux);
142 H_PUT_32 (abfd, src->vd_next, dst->vd_next);
252b5132
RH		 143}
144
145/* Swap in a Verdaux structure. */
146
147void
148_bfd_elf_swap_verdaux_in (abfd, src, dst)
149 bfd *abfd;
150 const Elf_External_Verdaux *src;
151 Elf_Internal_Verdaux *dst;
152{
dc810e39
AM		 153 dst->vda_name = H_GET_32 (abfd, src->vda_name);
154 dst->vda_next = H_GET_32 (abfd, src->vda_next);
252b5132
RH		 155}
156
157/* Swap out a Verdaux structure. */
158
159void
160_bfd_elf_swap_verdaux_out (abfd, src, dst)
161 bfd *abfd;
162 const Elf_Internal_Verdaux *src;
163 Elf_External_Verdaux *dst;
164{
dc810e39
AM		 165 H_PUT_32 (abfd, src->vda_name, dst->vda_name);
166 H_PUT_32 (abfd, src->vda_next, dst->vda_next);
252b5132
RH		 167}
168
169/* Swap in a Verneed structure. */
170
171void
172_bfd_elf_swap_verneed_in (abfd, src, dst)
173 bfd *abfd;
174 const Elf_External_Verneed *src;
175 Elf_Internal_Verneed *dst;
176{
dc810e39
AM		 177 dst->vn_version = H_GET_16 (abfd, src->vn_version);
178 dst->vn_cnt = H_GET_16 (abfd, src->vn_cnt);
179 dst->vn_file = H_GET_32 (abfd, src->vn_file);
180 dst->vn_aux = H_GET_32 (abfd, src->vn_aux);
181 dst->vn_next = H_GET_32 (abfd, src->vn_next);
252b5132
RH		 182}
183
184/* Swap out a Verneed structure. */
185
186void
187_bfd_elf_swap_verneed_out (abfd, src, dst)
188 bfd *abfd;
189 const Elf_Internal_Verneed *src;
190 Elf_External_Verneed *dst;
191{
dc810e39
AM		 192 H_PUT_16 (abfd, src->vn_version, dst->vn_version);
193 H_PUT_16 (abfd, src->vn_cnt, dst->vn_cnt);
194 H_PUT_32 (abfd, src->vn_file, dst->vn_file);
195 H_PUT_32 (abfd, src->vn_aux, dst->vn_aux);
196 H_PUT_32 (abfd, src->vn_next, dst->vn_next);
252b5132
RH		 197}
198
199/* Swap in a Vernaux structure. */
200
201void
202_bfd_elf_swap_vernaux_in (abfd, src, dst)
203 bfd *abfd;
204 const Elf_External_Vernaux *src;
205 Elf_Internal_Vernaux *dst;
206{
dc810e39
AM		 207 dst->vna_hash = H_GET_32 (abfd, src->vna_hash);
208 dst->vna_flags = H_GET_16 (abfd, src->vna_flags);
209 dst->vna_other = H_GET_16 (abfd, src->vna_other);
210 dst->vna_name = H_GET_32 (abfd, src->vna_name);
211 dst->vna_next = H_GET_32 (abfd, src->vna_next);
252b5132
RH		 212}
213
214/* Swap out a Vernaux structure. */
215
216void
217_bfd_elf_swap_vernaux_out (abfd, src, dst)
218 bfd *abfd;
219 const Elf_Internal_Vernaux *src;
220 Elf_External_Vernaux *dst;
221{
dc810e39
AM		 222 H_PUT_32 (abfd, src->vna_hash, dst->vna_hash);
223 H_PUT_16 (abfd, src->vna_flags, dst->vna_flags);
224 H_PUT_16 (abfd, src->vna_other, dst->vna_other);
225 H_PUT_32 (abfd, src->vna_name, dst->vna_name);
226 H_PUT_32 (abfd, src->vna_next, dst->vna_next);
252b5132
RH		 227}
228
229/* Swap in a Versym structure. */
230
231void
232_bfd_elf_swap_versym_in (abfd, src, dst)
233 bfd *abfd;
234 const Elf_External_Versym *src;
235 Elf_Internal_Versym *dst;
236{
dc810e39 237 dst->vs_vers = H_GET_16 (abfd, src->vs_vers);
252b5132
RH		 238}
239
240/* Swap out a Versym structure. */
241
242void
243_bfd_elf_swap_versym_out (abfd, src, dst)
244 bfd *abfd;
245 const Elf_Internal_Versym *src;
246 Elf_External_Versym *dst;
247{
dc810e39 248 H_PUT_16 (abfd, src->vs_vers, dst->vs_vers);
252b5132
RH		 249}
250
251/* Standard ELF hash function. Do not change this function; you will
252 cause invalid hash tables to be generated. */
3a99b017 253
252b5132 254unsigned long
3a99b017
ILT		 255bfd_elf_hash (namearg)
256 const char *namearg;
252b5132 257{
3a99b017 258 const unsigned char *name = (const unsigned char *) namearg;
252b5132
RH		 259 unsigned long h = 0;
260 unsigned long g;
261 int ch;
262
263 while ((ch = *name++) != '\0')
264 {
265 h = (h << 4) + ch;
266 if ((g = (h & 0xf0000000)) != 0)
267 {
268 h ^= g >> 24;
269 /* The ELF ABI says `h &= ~g', but this is equivalent in
270 this case and on some machines one insn instead of two. */
271 h ^= g;
272 }
273 }
274 return h;
275}
276
277/* Read a specified number of bytes at a specified offset in an ELF
278 file, into a newly allocated buffer, and return a pointer to the
c044fabd 279 buffer. */
252b5132
RH		 280
281static char *
282elf_read (abfd, offset, size)
c044fabd 283 bfd *abfd;
dc810e39
AM		 284 file_ptr offset;
285 bfd_size_type size;
252b5132
RH		 286{
287 char *buf;
288
289 if ((buf = bfd_alloc (abfd, size)) == NULL)
290 return NULL;
dc810e39 291 if (bfd_seek (abfd, offset, SEEK_SET) != 0)
252b5132 292 return NULL;
dc810e39 293 if (bfd_bread ((PTR) buf, size, abfd) != size)
252b5132
RH		 294 {
295 if (bfd_get_error () != bfd_error_system_call)
296 bfd_set_error (bfd_error_file_truncated);
297 return NULL;
298 }
299 return buf;
300}
301
b34976b6 302bfd_boolean
252b5132 303bfd_elf_mkobject (abfd)
c044fabd 304 bfd *abfd;
252b5132 305{
c044fabd
KH		 306 /* This just does initialization. */
307 /* coff_mkobject zalloc's space for tdata.coff_obj_data ... */
dc810e39
AM		 308 bfd_size_type amt = sizeof (struct elf_obj_tdata);
309 elf_tdata (abfd) = (struct elf_obj_tdata *) bfd_zalloc (abfd, amt);
252b5132 310 if (elf_tdata (abfd) == 0)
b34976b6 311 return FALSE;
c044fabd
KH		 312 /* Since everything is done at close time, do we need any
313 initialization? */
252b5132 314
b34976b6 315 return TRUE;
252b5132
RH		 316}
317
b34976b6 318bfd_boolean
252b5132 319bfd_elf_mkcorefile (abfd)
c044fabd 320 bfd *abfd;
252b5132 321{
c044fabd 322 /* I think this can be done just like an object file. */
252b5132
RH		 323 return bfd_elf_mkobject (abfd);
324}
325
326char *
327bfd_elf_get_str_section (abfd, shindex)
c044fabd 328 bfd *abfd;
252b5132
RH		 329 unsigned int shindex;
330{
331 Elf_Internal_Shdr **i_shdrp;
332 char *shstrtab = NULL;
dc810e39
AM		 333 file_ptr offset;
334 bfd_size_type shstrtabsize;
252b5132
RH		 335
336 i_shdrp = elf_elfsections (abfd);
337 if (i_shdrp == 0 || i_shdrp[shindex] == 0)
338 return 0;
339
340 shstrtab = (char *) i_shdrp[shindex]->contents;
341 if (shstrtab == NULL)
342 {
c044fabd 343 /* No cached one, attempt to read, and cache what we read. */
252b5132
RH		 344 offset = i_shdrp[shindex]->sh_offset;
345 shstrtabsize = i_shdrp[shindex]->sh_size;
346 shstrtab = elf_read (abfd, offset, shstrtabsize);
347 i_shdrp[shindex]->contents = (PTR) shstrtab;
348 }
349 return shstrtab;
350}
351
352char *
353bfd_elf_string_from_elf_section (abfd, shindex, strindex)
c044fabd 354 bfd *abfd;
252b5132
RH		 355 unsigned int shindex;
356 unsigned int strindex;
357{
358 Elf_Internal_Shdr *hdr;
359
360 if (strindex == 0)
361 return "";
362
363 hdr = elf_elfsections (abfd)[shindex];
364
365 if (hdr->contents == NULL
366 && bfd_elf_get_str_section (abfd, shindex) == NULL)
367 return NULL;
368
369 if (strindex >= hdr->sh_size)
370 {
371 (*_bfd_error_handler)
372 (_("%s: invalid string offset %u >= %lu for section `%s'"),
8f615d07 373 bfd_archive_filename (abfd), strindex, (unsigned long) hdr->sh_size,
252b5132
RH		 374 ((shindex == elf_elfheader(abfd)->e_shstrndx
375 && strindex == hdr->sh_name)
376 ? ".shstrtab"
377 : elf_string_from_elf_strtab (abfd, hdr->sh_name)));
378 return "";
379 }
380
381 return ((char *) hdr->contents) + strindex;
382}
383
6cdc0ccc
AM		 384/* Read and convert symbols to internal format.
385 SYMCOUNT specifies the number of symbols to read, starting from
386 symbol SYMOFFSET. If any of INTSYM_BUF, EXTSYM_BUF or EXTSHNDX_BUF
387 are non-NULL, they are used to store the internal symbols, external
388 symbols, and symbol section index extensions, respectively. */
389
390Elf_Internal_Sym *
391bfd_elf_get_elf_syms (ibfd, symtab_hdr, symcount, symoffset,
392 intsym_buf, extsym_buf, extshndx_buf)
393 bfd *ibfd;
394 Elf_Internal_Shdr *symtab_hdr;
395 size_t symcount;
396 size_t symoffset;
397 Elf_Internal_Sym *intsym_buf;
398 PTR extsym_buf;
399 Elf_External_Sym_Shndx *extshndx_buf;
400{
401 Elf_Internal_Shdr *shndx_hdr;
402 PTR alloc_ext;
df622259 403 const bfd_byte *esym;
6cdc0ccc
AM		 404 Elf_External_Sym_Shndx *alloc_extshndx;
405 Elf_External_Sym_Shndx *shndx;
406 Elf_Internal_Sym *isym;
407 Elf_Internal_Sym *isymend;
408 struct elf_backend_data *bed;
409 size_t extsym_size;
410 bfd_size_type amt;
411 file_ptr pos;
412
413 if (symcount == 0)
414 return intsym_buf;
415
416 /* Normal syms might have section extension entries. */
417 shndx_hdr = NULL;
418 if (symtab_hdr == &elf_tdata (ibfd)->symtab_hdr)
419 shndx_hdr = &elf_tdata (ibfd)->symtab_shndx_hdr;
420
421 /* Read the symbols. */
422 alloc_ext = NULL;
423 alloc_extshndx = NULL;
424 bed = get_elf_backend_data (ibfd);
425 extsym_size = bed->s->sizeof_sym;
426 amt = symcount * extsym_size;
427 pos = symtab_hdr->sh_offset + symoffset * extsym_size;
428 if (extsym_buf == NULL)
429 {
430 alloc_ext = bfd_malloc (amt);
431 extsym_buf = alloc_ext;
432 }
433 if (extsym_buf == NULL
434 || bfd_seek (ibfd, pos, SEEK_SET) != 0
435 || bfd_bread (extsym_buf, amt, ibfd) != amt)
436 {
437 intsym_buf = NULL;
438 goto out;
439 }
440
441 if (shndx_hdr == NULL || shndx_hdr->sh_size == 0)
442 extshndx_buf = NULL;
443 else
444 {
445 amt = symcount * sizeof (Elf_External_Sym_Shndx);
446 pos = shndx_hdr->sh_offset + symoffset * sizeof (Elf_External_Sym_Shndx);
447 if (extshndx_buf == NULL)
448 {
449 alloc_extshndx = (Elf_External_Sym_Shndx *) bfd_malloc (amt);
450 extshndx_buf = alloc_extshndx;
451 }
452 if (extshndx_buf == NULL
453 || bfd_seek (ibfd, pos, SEEK_SET) != 0
454 || bfd_bread (extshndx_buf, amt, ibfd) != amt)
455 {
456 intsym_buf = NULL;
457 goto out;
458 }
459 }
460
461 if (intsym_buf == NULL)
462 {
463 bfd_size_type amt = symcount * sizeof (Elf_Internal_Sym);
464 intsym_buf = (Elf_Internal_Sym *) bfd_malloc (amt);
465 if (intsym_buf == NULL)
466 goto out;
467 }
468
469 /* Convert the symbols to internal form. */
470 isymend = intsym_buf + symcount;
471 for (esym = extsym_buf, isym = intsym_buf, shndx = extshndx_buf;
472 isym < isymend;
473 esym += extsym_size, isym++, shndx = shndx != NULL ? shndx + 1 : NULL)
474 (*bed->s->swap_symbol_in) (ibfd, esym, (const PTR) shndx, isym);
475
476 out:
477 if (alloc_ext != NULL)
478 free (alloc_ext);
479 if (alloc_extshndx != NULL)
480 free (alloc_extshndx);
481
482 return intsym_buf;
483}
484
5cab59f6
AM		 485/* Look up a symbol name. */
486const char *
487bfd_elf_local_sym_name (abfd, isym)
488 bfd *abfd;
489 Elf_Internal_Sym *isym;
490{
491 unsigned int iname = isym->st_name;
492 unsigned int shindex = elf_tdata (abfd)->symtab_hdr.sh_link;
493 if (iname == 0 && ELF_ST_TYPE (isym->st_info) == STT_SECTION)
494 {
495 iname = elf_elfsections (abfd)[isym->st_shndx]->sh_name;
496 shindex = elf_elfheader (abfd)->e_shstrndx;
497 }
498
499 return bfd_elf_string_from_elf_section (abfd, shindex, iname);
500}
501
dbb410c3
AM		 502/* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP
503 sections. The first element is the flags, the rest are section
504 pointers. */
505
506typedef union elf_internal_group {
507 Elf_Internal_Shdr *shdr;
508 unsigned int flags;
509} Elf_Internal_Group;
510
b885599b
AM		 511/* Return the name of the group signature symbol. Why isn't the
512 signature just a string? */
513
514static const char *
515group_signature (abfd, ghdr)
516 bfd *abfd;
517 Elf_Internal_Shdr *ghdr;
518{
9dce4196 519 Elf_Internal_Shdr *hdr;
9dce4196
AM		 520 unsigned char esym[sizeof (Elf64_External_Sym)];
521 Elf_External_Sym_Shndx eshndx;
522 Elf_Internal_Sym isym;
b885599b
AM		 523
524 /* First we need to ensure the symbol table is available. */
525 if (! bfd_section_from_shdr (abfd, ghdr->sh_link))
526 return NULL;
527
9dce4196
AM		 528 /* Go read the symbol. */
529 hdr = &elf_tdata (abfd)->symtab_hdr;
6cdc0ccc
AM		 530 if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info,
531 &isym, esym, &eshndx) == NULL)
b885599b 532 return NULL;
9dce4196 533
5cab59f6 534 return bfd_elf_local_sym_name (abfd, &isym);
b885599b
AM		 535}
536
dbb410c3
AM		 537/* Set next_in_group list pointer, and group name for NEWSECT. */
538
b34976b6 539static bfd_boolean
dbb410c3
AM		 540setup_group (abfd, hdr, newsect)
541 bfd *abfd;
542 Elf_Internal_Shdr *hdr;
543 asection *newsect;
544{
545 unsigned int num_group = elf_tdata (abfd)->num_group;
546
547 /* If num_group is zero, read in all SHT_GROUP sections. The count
548 is set to -1 if there are no SHT_GROUP sections. */
549 if (num_group == 0)
550 {
551 unsigned int i, shnum;
552
553 /* First count the number of groups. If we have a SHT_GROUP
554 section with just a flag word (ie. sh_size is 4), ignore it. */
9ad5cbcf 555 shnum = elf_numsections (abfd);
dbb410c3
AM		 556 num_group = 0;
557 for (i = 0; i < shnum; i++)
558 {
559 Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i];
560 if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8)
561 num_group += 1;
562 }
563
564 if (num_group == 0)
973ffd63 565 num_group = (unsigned) -1;
dbb410c3
AM		 566 elf_tdata (abfd)->num_group = num_group;
567
568 if (num_group > 0)
569 {
570 /* We keep a list of elf section headers for group sections,
571 so we can find them quickly. */
572 bfd_size_type amt = num_group * sizeof (Elf_Internal_Shdr *);
573 elf_tdata (abfd)->group_sect_ptr = bfd_alloc (abfd, amt);
574 if (elf_tdata (abfd)->group_sect_ptr == NULL)
b34976b6 575 return FALSE;
dbb410c3
AM		 576
577 num_group = 0;
578 for (i = 0; i < shnum; i++)
579 {
580 Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i];
581 if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8)
582 {
973ffd63 583 unsigned char *src;
dbb410c3
AM		 584 Elf_Internal_Group *dest;
585
586 /* Add to list of sections. */
587 elf_tdata (abfd)->group_sect_ptr[num_group] = shdr;
588 num_group += 1;
589
590 /* Read the raw contents. */
591 BFD_ASSERT (sizeof (*dest) >= 4);
592 amt = shdr->sh_size * sizeof (*dest) / 4;
593 shdr->contents = bfd_alloc (abfd, amt);
594 if (shdr->contents == NULL
595 || bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0
596 || (bfd_bread (shdr->contents, shdr->sh_size, abfd)
597 != shdr->sh_size))
b34976b6 598 return FALSE;
dbb410c3
AM		 599
600 /* Translate raw contents, a flag word followed by an
601 array of elf section indices all in target byte order,
602 to the flag word followed by an array of elf section
603 pointers. */
604 src = shdr->contents + shdr->sh_size;
605 dest = (Elf_Internal_Group *) (shdr->contents + amt);
606 while (1)
607 {
608 unsigned int idx;
609
610 src -= 4;
611 --dest;
612 idx = H_GET_32 (abfd, src);
613 if (src == shdr->contents)
614 {
615 dest->flags = idx;
b885599b
AM		 616 if (shdr->bfd_section != NULL && (idx & GRP_COMDAT))
617 shdr->bfd_section->flags
618 |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
dbb410c3
AM		 619 break;
620 }
621 if (idx >= shnum)
622 {
623 ((*_bfd_error_handler)
624 (_("%s: invalid SHT_GROUP entry"),
625 bfd_archive_filename (abfd)));
626 idx = 0;
627 }
628 dest->shdr = elf_elfsections (abfd)[idx];
629 }
630 }
631 }
632 }
633 }
634
635 if (num_group != (unsigned) -1)
636 {
637 unsigned int i;
638
639 for (i = 0; i < num_group; i++)
640 {
641 Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i];
642 Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents;
643 unsigned int n_elt = shdr->sh_size / 4;
644
645 /* Look through this group's sections to see if current
646 section is a member. */
647 while (--n_elt != 0)
648 if ((++idx)->shdr == hdr)
649 {
e0e8c97f 650 asection *s = NULL;
dbb410c3
AM		 651
652 /* We are a member of this group. Go looking through
653 other members to see if any others are linked via
654 next_in_group. */
655 idx = (Elf_Internal_Group *) shdr->contents;
656 n_elt = shdr->sh_size / 4;
657 while (--n_elt != 0)
658 if ((s = (++idx)->shdr->bfd_section) != NULL
945906ff 659 && elf_next_in_group (s) != NULL)
dbb410c3
AM		 660 break;
661 if (n_elt != 0)
662 {
dbb410c3
AM		 663 /* Snarf the group name from other member, and
664 insert current section in circular list. */
945906ff
AM		 665 elf_group_name (newsect) = elf_group_name (s);
666 elf_next_in_group (newsect) = elf_next_in_group (s);
667 elf_next_in_group (s) = newsect;
dbb410c3
AM		 668 }
669 else
670 {
dbb410c3
AM		 671 const char *gname;
672
b885599b
AM		 673 gname = group_signature (abfd, shdr);
674 if (gname == NULL)
b34976b6 675 return FALSE;
945906ff 676 elf_group_name (newsect) = gname;
dbb410c3
AM		 677
678 /* Start a circular list with one element. */
945906ff 679 elf_next_in_group (newsect) = newsect;
dbb410c3 680 }
b885599b 681
9dce4196
AM		 682 /* If the group section has been created, point to the
683 new member. */
dbb410c3 684 if (shdr->bfd_section != NULL)
945906ff 685 elf_next_in_group (shdr->bfd_section) = newsect;
b885599b 686
dbb410c3
AM		 687 i = num_group - 1;
688 break;
689 }
690 }
691 }
692
945906ff 693 if (elf_group_name (newsect) == NULL)
dbb410c3
AM		 694 {
695 (*_bfd_error_handler) (_("%s: no group info for section %s"),
696 bfd_archive_filename (abfd), newsect->name);
697 }
b34976b6 698 return TRUE;
dbb410c3
AM		 699}
700
b34976b6 701bfd_boolean
b885599b
AM		 702bfd_elf_discard_group (abfd, group)
703 bfd *abfd ATTRIBUTE_UNUSED;
704 asection *group;
705{
706 asection *first = elf_next_in_group (group);
707 asection *s = first;
708
709 while (s != NULL)
710 {
711 s->output_section = bfd_abs_section_ptr;
712 s = elf_next_in_group (s);
713 /* These lists are circular. */
714 if (s == first)
715 break;
716 }
b34976b6 717 return TRUE;
b885599b
AM		 718}
719
252b5132
RH		 720/* Make a BFD section from an ELF section. We store a pointer to the
721 BFD section in the bfd_section field of the header. */
722
b34976b6 723bfd_boolean
252b5132
RH		 724_bfd_elf_make_section_from_shdr (abfd, hdr, name)
725 bfd *abfd;
726 Elf_Internal_Shdr *hdr;
727 const char *name;
728{
729 asection *newsect;
730 flagword flags;
fa152c49 731 struct elf_backend_data *bed;
252b5132
RH		 732
733 if (hdr->bfd_section != NULL)
734 {
735 BFD_ASSERT (strcmp (name,
736 bfd_get_section_name (abfd, hdr->bfd_section)) == 0);
b34976b6 737 return TRUE;
252b5132
RH		 738 }
739
740 newsect = bfd_make_section_anyway (abfd, name);
741 if (newsect == NULL)
b34976b6 742 return FALSE;
252b5132
RH		 743
744 newsect->filepos = hdr->sh_offset;
745
746 if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr)
747 || ! bfd_set_section_size (abfd, newsect, hdr->sh_size)
748 || ! bfd_set_section_alignment (abfd, newsect,
dc810e39 749 bfd_log2 ((bfd_vma) hdr->sh_addralign)))
b34976b6 750 return FALSE;
252b5132
RH		 751
752 flags = SEC_NO_FLAGS;
753 if (hdr->sh_type != SHT_NOBITS)
754 flags |= SEC_HAS_CONTENTS;
dbb410c3
AM		 755 if (hdr->sh_type == SHT_GROUP)
756 flags |= SEC_GROUP | SEC_EXCLUDE;
252b5132
RH		 757 if ((hdr->sh_flags & SHF_ALLOC) != 0)
758 {
759 flags |= SEC_ALLOC;
760 if (hdr->sh_type != SHT_NOBITS)
761 flags |= SEC_LOAD;
762 }
763 if ((hdr->sh_flags & SHF_WRITE) == 0)
764 flags |= SEC_READONLY;
765 if ((hdr->sh_flags & SHF_EXECINSTR) != 0)
766 flags |= SEC_CODE;
767 else if ((flags & SEC_LOAD) != 0)
768 flags |= SEC_DATA;
f5fa8ca2
JJ		 769 if ((hdr->sh_flags & SHF_MERGE) != 0)
770 {
771 flags |= SEC_MERGE;
772 newsect->entsize = hdr->sh_entsize;
773 if ((hdr->sh_flags & SHF_STRINGS) != 0)
774 flags |= SEC_STRINGS;
775 }
dbb410c3
AM		 776 if (hdr->sh_flags & SHF_GROUP)
777 if (!setup_group (abfd, hdr, newsect))
b34976b6 778 return FALSE;
13ae64f3
JJ		 779 if ((hdr->sh_flags & SHF_TLS) != 0)
780 flags |= SEC_THREAD_LOCAL;
252b5132
RH		 781
782 /* The debugging sections appear to be recognized only by name, not
783 any sort of flag. */
7a6cc5fb 784 {
dbf48117 785 static const char *debug_sec_names [] =
7a6cc5fb
NC		 786 {
787 ".debug",
788 ".gnu.linkonce.wi.",
789 ".line",
790 ".stab"
791 };
792 int i;
793
e0e8c97f 794 for (i = ARRAY_SIZE (debug_sec_names); i--;)
7a6cc5fb
NC		 795 if (strncmp (name, debug_sec_names[i], strlen (debug_sec_names[i])) == 0)
796 break;
797
798 if (i >= 0)
799 flags |= SEC_DEBUGGING;
800 }
252b5132
RH		 801
802 /* As a GNU extension, if the name begins with .gnu.linkonce, we
803 only link a single copy of the section. This is used to support
804 g++. g++ will emit each template expansion in its own section.
805 The symbols will be defined as weak, so that multiple definitions
806 are permitted. The GNU linker extension is to actually discard
807 all but one of the sections. */
b885599b
AM		 808 if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0
809 && elf_next_in_group (newsect) == NULL)
252b5132
RH		 810 flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
811
fa152c49
JW		 812 bed = get_elf_backend_data (abfd);
813 if (bed->elf_backend_section_flags)
814 if (! bed->elf_backend_section_flags (&flags, hdr))
b34976b6 815 return FALSE;
fa152c49 816
252b5132 817 if (! bfd_set_section_flags (abfd, newsect, flags))
b34976b6 818 return FALSE;
252b5132
RH		 819
820 if ((flags & SEC_ALLOC) != 0)
821 {
822 Elf_Internal_Phdr *phdr;
823 unsigned int i;
824
825 /* Look through the phdrs to see if we need to adjust the lma.
826 If all the p_paddr fields are zero, we ignore them, since
827 some ELF linkers produce such output. */
828 phdr = elf_tdata (abfd)->phdr;
829 for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++)
830 {
831 if (phdr->p_paddr != 0)
832 break;
833 }
834 if (i < elf_elfheader (abfd)->e_phnum)
835 {
836 phdr = elf_tdata (abfd)->phdr;
837 for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++)
838 {
e0e8c97f
NC		 839 /* This section is part of this segment if its file
840 offset plus size lies within the segment's memory
841 span and, if the section is loaded, the extent of the
47d9a591 842 loaded data lies within the extent of the segment.
bf36db18
NC		 843
844 Note - we used to check the p_paddr field as well, and
845 refuse to set the LMA if it was 0. This is wrong
dba143ef 846 though, as a perfectly valid initialised segment can
bf36db18 847 have a p_paddr of zero. Some architectures, eg ARM,
dba143ef 848 place special significance on the address 0 and
bf36db18
NC		 849 executables need to be able to have a segment which
850 covers this address. */
252b5132 851 if (phdr->p_type == PT_LOAD
e0e8c97f
NC		 852 && (bfd_vma) hdr->sh_offset >= phdr->p_offset
853 && (hdr->sh_offset + hdr->sh_size
854 <= phdr->p_offset + phdr->p_memsz)
252b5132 855 && ((flags & SEC_LOAD) == 0
d7866f04
AM		 856 || (hdr->sh_offset + hdr->sh_size
857 <= phdr->p_offset + phdr->p_filesz)))
252b5132 858 {
dba143ef 859 if ((flags & SEC_LOAD) == 0)
d7866f04
AM		 860 newsect->lma = (phdr->p_paddr
861 + hdr->sh_addr - phdr->p_vaddr);
dba143ef
AM		 862 else
863 /* We used to use the same adjustment for SEC_LOAD
864 sections, but that doesn't work if the segment
865 is packed with code from multiple VMAs.
866 Instead we calculate the section LMA based on
867 the segment LMA. It is assumed that the
868 segment will contain sections with contiguous
869 LMAs, even if the VMAs are not. */
870 newsect->lma = (phdr->p_paddr
871 + hdr->sh_offset - phdr->p_offset);
d7866f04
AM		 872
873 /* With contiguous segments, we can't tell from file
874 offsets whether a section with zero size should
875 be placed at the end of one segment or the
876 beginning of the next. Decide based on vaddr. */
877 if (hdr->sh_addr >= phdr->p_vaddr
878 && (hdr->sh_addr + hdr->sh_size
879 <= phdr->p_vaddr + phdr->p_memsz))
880 break;
252b5132
RH		 881 }
882 }
883 }
884 }
885
886 hdr->bfd_section = newsect;
887 elf_section_data (newsect)->this_hdr = *hdr;
888
b34976b6 889 return TRUE;
252b5132
RH		 890}
891
892/*
893INTERNAL_FUNCTION
894 bfd_elf_find_section
895
896SYNOPSIS
897 struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name);
898
899DESCRIPTION
900 Helper functions for GDB to locate the string tables.
901 Since BFD hides string tables from callers, GDB needs to use an
902 internal hook to find them. Sun's .stabstr, in particular,
903 isn't even pointed to by the .stab section, so ordinary
904 mechanisms wouldn't work to find it, even if we had some.
905*/
906
907struct elf_internal_shdr *
908bfd_elf_find_section (abfd, name)
c044fabd 909 bfd *abfd;
252b5132
RH		 910 char *name;
911{
912 Elf_Internal_Shdr **i_shdrp;
913 char *shstrtab;
914 unsigned int max;
915 unsigned int i;
916
917 i_shdrp = elf_elfsections (abfd);
918 if (i_shdrp != NULL)
919 {
9ad5cbcf
AM		 920 shstrtab = bfd_elf_get_str_section (abfd,
921 elf_elfheader (abfd)->e_shstrndx);
252b5132
RH		 922 if (shstrtab != NULL)
923 {
9ad5cbcf 924 max = elf_numsections (abfd);
252b5132
RH		 925 for (i = 1; i < max; i++)
926 if (!strcmp (&shstrtab[i_shdrp[i]->sh_name], name))
927 return i_shdrp[i];
928 }
929 }
930 return 0;
931}
932
933const char *const bfd_elf_section_type_names[] = {
934 "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB",
935 "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE",
936 "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM",
937};
938
939/* ELF relocs are against symbols. If we are producing relocateable
940 output, and the reloc is against an external symbol, and nothing
941 has given us any additional addend, the resulting reloc will also
942 be against the same symbol. In such a case, we don't want to
943 change anything about the way the reloc is handled, since it will
944 all be done at final link time. Rather than put special case code
945 into bfd_perform_relocation, all the reloc types use this howto
946 function. It just short circuits the reloc if producing
947 relocateable output against an external symbol. */
948
252b5132
RH		 949bfd_reloc_status_type
950bfd_elf_generic_reloc (abfd,
951 reloc_entry,
952 symbol,
953 data,
954 input_section,
955 output_bfd,
956 error_message)
7442e600 957 bfd *abfd ATTRIBUTE_UNUSED;
252b5132
RH		 958 arelent *reloc_entry;
959 asymbol *symbol;
7442e600 960 PTR data ATTRIBUTE_UNUSED;
252b5132
RH		 961 asection *input_section;
962 bfd *output_bfd;
7442e600 963 char **error_message ATTRIBUTE_UNUSED;
252b5132
RH		 964{
965 if (output_bfd != (bfd *) NULL
966 && (symbol->flags & BSF_SECTION_SYM) == 0
967 && (! reloc_entry->howto->partial_inplace
968 || reloc_entry->addend == 0))
969 {
970 reloc_entry->address += input_section->output_offset;
971 return bfd_reloc_ok;
972 }
973
974 return bfd_reloc_continue;
975}
976\f
d3c456e9
JJ		 977/* Make sure sec_info_type is cleared if sec_info is cleared too. */
978
979static void
980merge_sections_remove_hook (abfd, sec)
981 bfd *abfd ATTRIBUTE_UNUSED;
982 asection *sec;
983{
68bfbfcc
AM		 984 BFD_ASSERT (sec->sec_info_type == ELF_INFO_TYPE_MERGE);
985 sec->sec_info_type = ELF_INFO_TYPE_NONE;
d3c456e9
JJ		 986}
987
8550eb6e
JJ		 988/* Finish SHF_MERGE section merging. */
989
b34976b6 990bfd_boolean
8550eb6e
JJ		 991_bfd_elf_merge_sections (abfd, info)
992 bfd *abfd;
993 struct bfd_link_info *info;
994{
b0f35f36 995 if (!is_elf_hash_table (info))
b34976b6 996 return FALSE;
b0f35f36 997 if (elf_hash_table (info)->merge_info)
d3c456e9
JJ		 998 _bfd_merge_sections (abfd, elf_hash_table (info)->merge_info,
999 merge_sections_remove_hook);
b34976b6 1000 return TRUE;
8550eb6e 1001}
2d653fc7
AM		 1002
1003void
1004_bfd_elf_link_just_syms (sec, info)
1005 asection *sec;
1006 struct bfd_link_info *info;
1007{
1008 sec->output_section = bfd_abs_section_ptr;
1009 sec->output_offset = sec->vma;
1010 if (!is_elf_hash_table (info))
1011 return;
1012
68bfbfcc 1013 sec->sec_info_type = ELF_INFO_TYPE_JUST_SYMS;
2d653fc7 1014}
8550eb6e 1015\f
0ac4564e
L		 1016/* Copy the program header and other data from one object module to
1017 another. */
252b5132 1018
b34976b6 1019bfd_boolean
2d502050
L		 1020_bfd_elf_copy_private_bfd_data (ibfd, obfd)
1021 bfd *ibfd;
1022 bfd *obfd;
1023{
1024 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1025 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 1026 return TRUE;
2d502050
L		 1027
1028 BFD_ASSERT (!elf_flags_init (obfd)
1029 || (elf_elfheader (obfd)->e_flags
1030 == elf_elfheader (ibfd)->e_flags));
1031
0ac4564e 1032 elf_gp (obfd) = elf_gp (ibfd);
2d502050 1033 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
b34976b6
AM		 1034 elf_flags_init (obfd) = TRUE;
1035 return TRUE;
2d502050
L		 1036}
1037
f0b79d91
L		 1038/* Print out the program headers. */
1039
b34976b6 1040bfd_boolean
252b5132
RH		 1041_bfd_elf_print_private_bfd_data (abfd, farg)
1042 bfd *abfd;
1043 PTR farg;
1044{
1045 FILE *f = (FILE *) farg;
1046 Elf_Internal_Phdr *p;
1047 asection *s;
1048 bfd_byte *dynbuf = NULL;
1049
1050 p = elf_tdata (abfd)->phdr;
1051 if (p != NULL)
1052 {
1053 unsigned int i, c;
1054
1055 fprintf (f, _("\nProgram Header:\n"));
1056 c = elf_elfheader (abfd)->e_phnum;
1057 for (i = 0; i < c; i++, p++)
1058 {
dc810e39 1059 const char *pt;
252b5132
RH		 1060 char buf[20];
1061
1062 switch (p->p_type)
1063 {
dc810e39
AM		 1064 case PT_NULL: pt = "NULL"; break;
1065 case PT_LOAD: pt = "LOAD"; break;
1066 case PT_DYNAMIC: pt = "DYNAMIC"; break;
1067 case PT_INTERP: pt = "INTERP"; break;
1068 case PT_NOTE: pt = "NOTE"; break;
1069 case PT_SHLIB: pt = "SHLIB"; break;
1070 case PT_PHDR: pt = "PHDR"; break;
13ae64f3 1071 case PT_TLS: pt = "TLS"; break;
65765700 1072 case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break;
dc810e39 1073 default: sprintf (buf, "0x%lx", p->p_type); pt = buf; break;
252b5132 1074 }
dc810e39 1075 fprintf (f, "%8s off 0x", pt);
60b89a18 1076 bfd_fprintf_vma (abfd, f, p->p_offset);
252b5132 1077 fprintf (f, " vaddr 0x");
60b89a18 1078 bfd_fprintf_vma (abfd, f, p->p_vaddr);
252b5132 1079 fprintf (f, " paddr 0x");
60b89a18 1080 bfd_fprintf_vma (abfd, f, p->p_paddr);
252b5132
RH		 1081 fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align));
1082 fprintf (f, " filesz 0x");
60b89a18 1083 bfd_fprintf_vma (abfd, f, p->p_filesz);
252b5132 1084 fprintf (f, " memsz 0x");
60b89a18 1085 bfd_fprintf_vma (abfd, f, p->p_memsz);
252b5132
RH		 1086 fprintf (f, " flags %c%c%c",
1087 (p->p_flags & PF_R) != 0 ? 'r' : '-',
1088 (p->p_flags & PF_W) != 0 ? 'w' : '-',
1089 (p->p_flags & PF_X) != 0 ? 'x' : '-');
dc810e39
AM		 1090 if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0)
1091 fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X));
252b5132
RH		 1092 fprintf (f, "\n");
1093 }
1094 }
1095
1096 s = bfd_get_section_by_name (abfd, ".dynamic");
1097 if (s != NULL)
1098 {
1099 int elfsec;
dc810e39 1100 unsigned long shlink;
252b5132
RH		 1101 bfd_byte *extdyn, *extdynend;
1102 size_t extdynsize;
1103 void (*swap_dyn_in) PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *));
1104
1105 fprintf (f, _("\nDynamic Section:\n"));
1106
1107 dynbuf = (bfd_byte *) bfd_malloc (s->_raw_size);
1108 if (dynbuf == NULL)
1109 goto error_return;
1110 if (! bfd_get_section_contents (abfd, s, (PTR) dynbuf, (file_ptr) 0,
1111 s->_raw_size))
1112 goto error_return;
1113
1114 elfsec = _bfd_elf_section_from_bfd_section (abfd, s);
1115 if (elfsec == -1)
1116 goto error_return;
dc810e39 1117 shlink = elf_elfsections (abfd)[elfsec]->sh_link;
252b5132
RH		 1118
1119 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
1120 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
1121
1122 extdyn = dynbuf;
1123 extdynend = extdyn + s->_raw_size;
1124 for (; extdyn < extdynend; extdyn += extdynsize)
1125 {
1126 Elf_Internal_Dyn dyn;
1127 const char *name;
1128 char ab[20];
b34976b6 1129 bfd_boolean stringp;
252b5132
RH		 1130
1131 (*swap_dyn_in) (abfd, (PTR) extdyn, &dyn);
1132
1133 if (dyn.d_tag == DT_NULL)
1134 break;
1135
b34976b6 1136 stringp = FALSE;
252b5132
RH		 1137 switch (dyn.d_tag)
1138 {
1139 default:
1140 sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag);
1141 name = ab;
1142 break;
1143
b34976b6 1144 case DT_NEEDED: name = "NEEDED"; stringp = TRUE; break;
252b5132
RH		 1145 case DT_PLTRELSZ: name = "PLTRELSZ"; break;
1146 case DT_PLTGOT: name = "PLTGOT"; break;
1147 case DT_HASH: name = "HASH"; break;
1148 case DT_STRTAB: name = "STRTAB"; break;
1149 case DT_SYMTAB: name = "SYMTAB"; break;
1150 case DT_RELA: name = "RELA"; break;
1151 case DT_RELASZ: name = "RELASZ"; break;
1152 case DT_RELAENT: name = "RELAENT"; break;
1153 case DT_STRSZ: name = "STRSZ"; break;
1154 case DT_SYMENT: name = "SYMENT"; break;
1155 case DT_INIT: name = "INIT"; break;
1156 case DT_FINI: name = "FINI"; break;
b34976b6
AM		 1157 case DT_SONAME: name = "SONAME"; stringp = TRUE; break;
1158 case DT_RPATH: name = "RPATH"; stringp = TRUE; break;
252b5132
RH		 1159 case DT_SYMBOLIC: name = "SYMBOLIC"; break;
1160 case DT_REL: name = "REL"; break;
1161 case DT_RELSZ: name = "RELSZ"; break;
1162 case DT_RELENT: name = "RELENT"; break;
1163 case DT_PLTREL: name = "PLTREL"; break;
1164 case DT_DEBUG: name = "DEBUG"; break;
1165 case DT_TEXTREL: name = "TEXTREL"; break;
1166 case DT_JMPREL: name = "JMPREL"; break;
94558834
L		 1167 case DT_BIND_NOW: name = "BIND_NOW"; break;
1168 case DT_INIT_ARRAY: name = "INIT_ARRAY"; break;
1169 case DT_FINI_ARRAY: name = "FINI_ARRAY"; break;
1170 case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break;
1171 case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break;
b34976b6 1172 case DT_RUNPATH: name = "RUNPATH"; stringp = TRUE; break;
94558834
L		 1173 case DT_FLAGS: name = "FLAGS"; break;
1174 case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break;
1175 case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break;
d48188b9 1176 case DT_CHECKSUM: name = "CHECKSUM"; break;
94558834
L		 1177 case DT_PLTPADSZ: name = "PLTPADSZ"; break;
1178 case DT_MOVEENT: name = "MOVEENT"; break;
1179 case DT_MOVESZ: name = "MOVESZ"; break;
1180 case DT_FEATURE: name = "FEATURE"; break;
1181 case DT_POSFLAG_1: name = "POSFLAG_1"; break;
1182 case DT_SYMINSZ: name = "SYMINSZ"; break;
1183 case DT_SYMINENT: name = "SYMINENT"; break;
b34976b6
AM		 1184 case DT_CONFIG: name = "CONFIG"; stringp = TRUE; break;
1185 case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = TRUE; break;
1186 case DT_AUDIT: name = "AUDIT"; stringp = TRUE; break;
94558834
L		 1187 case DT_PLTPAD: name = "PLTPAD"; break;
1188 case DT_MOVETAB: name = "MOVETAB"; break;
1189 case DT_SYMINFO: name = "SYMINFO"; break;
1190 case DT_RELACOUNT: name = "RELACOUNT"; break;
1191 case DT_RELCOUNT: name = "RELCOUNT"; break;
1192 case DT_FLAGS_1: name = "FLAGS_1"; break;
252b5132
RH		 1193 case DT_VERSYM: name = "VERSYM"; break;
1194 case DT_VERDEF: name = "VERDEF"; break;
1195 case DT_VERDEFNUM: name = "VERDEFNUM"; break;
1196 case DT_VERNEED: name = "VERNEED"; break;
1197 case DT_VERNEEDNUM: name = "VERNEEDNUM"; break;
b34976b6 1198 case DT_AUXILIARY: name = "AUXILIARY"; stringp = TRUE; break;
94558834 1199 case DT_USED: name = "USED"; break;
b34976b6 1200 case DT_FILTER: name = "FILTER"; stringp = TRUE; break;
252b5132
RH		 1201 }
1202
1203 fprintf (f, " %-11s ", name);
1204 if (! stringp)
1205 fprintf (f, "0x%lx", (unsigned long) dyn.d_un.d_val);
1206 else
1207 {
1208 const char *string;
dc810e39 1209 unsigned int tagv = dyn.d_un.d_val;
252b5132 1210
dc810e39 1211 string = bfd_elf_string_from_elf_section (abfd, shlink, tagv);
252b5132
RH		 1212 if (string == NULL)
1213 goto error_return;
1214 fprintf (f, "%s", string);
1215 }
1216 fprintf (f, "\n");
1217 }
1218
1219 free (dynbuf);
1220 dynbuf = NULL;
1221 }
1222
1223 if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL)
1224 || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL))
1225 {
1226 if (! _bfd_elf_slurp_version_tables (abfd))
b34976b6 1227 return FALSE;
252b5132
RH		 1228 }
1229
1230 if (elf_dynverdef (abfd) != 0)
1231 {
1232 Elf_Internal_Verdef *t;
1233
1234 fprintf (f, _("\nVersion definitions:\n"));
1235 for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef)
1236 {
1237 fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx,
1238 t->vd_flags, t->vd_hash, t->vd_nodename);
1239 if (t->vd_auxptr->vda_nextptr != NULL)
1240 {
1241 Elf_Internal_Verdaux *a;
1242
1243 fprintf (f, "\t");
1244 for (a = t->vd_auxptr->vda_nextptr;
1245 a != NULL;
1246 a = a->vda_nextptr)
1247 fprintf (f, "%s ", a->vda_nodename);
1248 fprintf (f, "\n");
1249 }
1250 }
1251 }
1252
1253 if (elf_dynverref (abfd) != 0)
1254 {
1255 Elf_Internal_Verneed *t;
1256
1257 fprintf (f, _("\nVersion References:\n"));
1258 for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref)
1259 {
1260 Elf_Internal_Vernaux *a;
1261
1262 fprintf (f, _(" required from %s:\n"), t->vn_filename);
1263 for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr)
1264 fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash,
1265 a->vna_flags, a->vna_other, a->vna_nodename);
1266 }
1267 }
1268
b34976b6 1269 return TRUE;
252b5132
RH		 1270
1271 error_return:
1272 if (dynbuf != NULL)
1273 free (dynbuf);
b34976b6 1274 return FALSE;
252b5132
RH		 1275}
1276
1277/* Display ELF-specific fields of a symbol. */
1278
1279void
1280bfd_elf_print_symbol (abfd, filep, symbol, how)
1281 bfd *abfd;
1282 PTR filep;
1283 asymbol *symbol;
1284 bfd_print_symbol_type how;
1285{
1286 FILE *file = (FILE *) filep;
1287 switch (how)
1288 {
1289 case bfd_print_symbol_name:
1290 fprintf (file, "%s", symbol->name);
1291 break;
1292 case bfd_print_symbol_more:
1293 fprintf (file, "elf ");
60b89a18 1294 bfd_fprintf_vma (abfd, file, symbol->value);
252b5132
RH		 1295 fprintf (file, " %lx", (long) symbol->flags);
1296 break;
1297 case bfd_print_symbol_all:
1298 {
4e8a9624
AM		 1299 const char *section_name;
1300 const char *name = NULL;
587ff49e 1301 struct elf_backend_data *bed;
7a13edea 1302 unsigned char st_other;
dbb410c3 1303 bfd_vma val;
c044fabd 1304
252b5132 1305 section_name = symbol->section ? symbol->section->name : "(*none*)";
587ff49e
RH		 1306
1307 bed = get_elf_backend_data (abfd);
1308 if (bed->elf_backend_print_symbol_all)
c044fabd 1309 name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol);
587ff49e
RH		 1310
1311 if (name == NULL)
1312 {
7ee38065 1313 name = symbol->name;
60b89a18 1314 bfd_print_symbol_vandf (abfd, (PTR) file, symbol);
587ff49e
RH		 1315 }
1316
252b5132
RH		 1317 fprintf (file, " %s\t", section_name);
1318 /* Print the "other" value for a symbol. For common symbols,
1319 we've already printed the size; now print the alignment.
1320 For other symbols, we have no specified alignment, and
1321 we've printed the address; now print the size. */
dbb410c3
AM		 1322 if (bfd_is_com_section (symbol->section))
1323 val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value;
1324 else
1325 val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size;
1326 bfd_fprintf_vma (abfd, file, val);
252b5132
RH		 1327
1328 /* If we have version information, print it. */
1329 if (elf_tdata (abfd)->dynversym_section != 0
1330 && (elf_tdata (abfd)->dynverdef_section != 0
1331 || elf_tdata (abfd)->dynverref_section != 0))
1332 {
1333 unsigned int vernum;
1334 const char *version_string;
1335
1336 vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION;
1337
1338 if (vernum == 0)
1339 version_string = "";
1340 else if (vernum == 1)
1341 version_string = "Base";
1342 else if (vernum <= elf_tdata (abfd)->cverdefs)
1343 version_string =
1344 elf_tdata (abfd)->verdef[vernum - 1].vd_nodename;
1345 else
1346 {
1347 Elf_Internal_Verneed *t;
1348
1349 version_string = "";
1350 for (t = elf_tdata (abfd)->verref;
1351 t != NULL;
1352 t = t->vn_nextref)
1353 {
1354 Elf_Internal_Vernaux *a;
1355
1356 for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr)
1357 {
1358 if (a->vna_other == vernum)
1359 {
1360 version_string = a->vna_nodename;
1361 break;
1362 }
1363 }
1364 }
1365 }
1366
1367 if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0)
1368 fprintf (file, " %-11s", version_string);
1369 else
1370 {
1371 int i;
1372
1373 fprintf (file, " (%s)", version_string);
1374 for (i = 10 - strlen (version_string); i > 0; --i)
1375 putc (' ', file);
1376 }
1377 }
1378
1379 /* If the st_other field is not zero, print it. */
7a13edea 1380 st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other;
c044fabd 1381
7a13edea
NC		 1382 switch (st_other)
1383 {
1384 case 0: break;
1385 case STV_INTERNAL: fprintf (file, " .internal"); break;
1386 case STV_HIDDEN: fprintf (file, " .hidden"); break;
1387 case STV_PROTECTED: fprintf (file, " .protected"); break;
1388 default:
1389 /* Some other non-defined flags are also present, so print
1390 everything hex. */
1391 fprintf (file, " 0x%02x", (unsigned int) st_other);
1392 }
252b5132 1393
587ff49e 1394 fprintf (file, " %s", name);
252b5132
RH		 1395 }
1396 break;
1397 }
1398}
1399\f
1400/* Create an entry in an ELF linker hash table. */
1401
1402struct bfd_hash_entry *
1403_bfd_elf_link_hash_newfunc (entry, table, string)
1404 struct bfd_hash_entry *entry;
1405 struct bfd_hash_table *table;
1406 const char *string;
1407{
252b5132
RH		 1408 /* Allocate the structure if it has not already been allocated by a
1409 subclass. */
51b64d56
AM		 1410 if (entry == NULL)
1411 {
1412 entry = bfd_hash_allocate (table, sizeof (struct elf_link_hash_entry));
1413 if (entry == NULL)
1414 return entry;
1415 }
252b5132
RH		 1416
1417 /* Call the allocation method of the superclass. */
51b64d56
AM		 1418 entry = _bfd_link_hash_newfunc (entry, table, string);
1419 if (entry != NULL)
252b5132 1420 {
51b64d56
AM		 1421 struct elf_link_hash_entry *ret = (struct elf_link_hash_entry *) entry;
1422 struct elf_link_hash_table *htab = (struct elf_link_hash_table *) table;
1423
252b5132
RH		 1424 /* Set local fields. */
1425 ret->indx = -1;
252b5132
RH		 1426 ret->dynindx = -1;
1427 ret->dynstr_index = 0;
73722af0 1428 ret->elf_hash_value = 0;
252b5132 1429 ret->weakdef = NULL;
51b64d56 1430 ret->linker_section_pointer = NULL;
252b5132 1431 ret->verinfo.verdef = NULL;
252b5132 1432 ret->vtable_entries_size = 0;
73722af0 1433 ret->vtable_entries_used = NULL;
252b5132 1434 ret->vtable_parent = NULL;
5cab59f6
AM		 1435 ret->got = htab->init_refcount;
1436 ret->plt = htab->init_refcount;
73722af0 1437 ret->size = 0;
252b5132
RH		 1438 ret->type = STT_NOTYPE;
1439 ret->other = 0;
1440 /* Assume that we have been called by a non-ELF symbol reader.
1441 This flag is then reset by the code which reads an ELF input
1442 file. This ensures that a symbol created by a non-ELF symbol
1443 reader will have the flag set correctly. */
1444 ret->elf_link_hash_flags = ELF_LINK_NON_ELF;
1445 }
1446
51b64d56 1447 return entry;
252b5132
RH		 1448}
1449
2920b85c 1450/* Copy data from an indirect symbol to its direct symbol, hiding the
0a991dfe 1451 old indirect symbol. Also used for copying flags to a weakdef. */
2920b85c 1452
c61b8717 1453void
b48fa14c
AM		 1454_bfd_elf_link_hash_copy_indirect (bed, dir, ind)
1455 struct elf_backend_data *bed;
2920b85c
RH		 1456 struct elf_link_hash_entry *dir, *ind;
1457{
3c3e9281 1458 bfd_signed_vma tmp;
b48fa14c 1459 bfd_signed_vma lowest_valid = bed->can_refcount;
3c3e9281 1460
2920b85c
RH		 1461 /* Copy down any references that we may have already seen to the
1462 symbol which just became indirect. */
1463
1464 dir->elf_link_hash_flags |=
1465 (ind->elf_link_hash_flags
1466 & (ELF_LINK_HASH_REF_DYNAMIC
1467 | ELF_LINK_HASH_REF_REGULAR
1468 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
1469 | ELF_LINK_NON_GOT_REF));
1470
1e370bd2 1471 if (ind->root.type != bfd_link_hash_indirect)
0a991dfe
AM		 1472 return;
1473
51b64d56 1474 /* Copy over the global and procedure linkage table refcount entries.
2920b85c 1475 These may have been already set up by a check_relocs routine. */
3c3e9281 1476 tmp = dir->got.refcount;
b48fa14c 1477 if (tmp < lowest_valid)
2920b85c 1478 {
51b64d56 1479 dir->got.refcount = ind->got.refcount;
3c3e9281 1480 ind->got.refcount = tmp;
2920b85c 1481 }
3c3e9281 1482 else
b48fa14c 1483 BFD_ASSERT (ind->got.refcount < lowest_valid);
2920b85c 1484
3c3e9281 1485 tmp = dir->plt.refcount;
b48fa14c 1486 if (tmp < lowest_valid)
2920b85c 1487 {
51b64d56 1488 dir->plt.refcount = ind->plt.refcount;
3c3e9281 1489 ind->plt.refcount = tmp;
2920b85c 1490 }
3c3e9281 1491 else
b48fa14c 1492 BFD_ASSERT (ind->plt.refcount < lowest_valid);
2920b85c
RH		 1493
1494 if (dir->dynindx == -1)
1495 {
1496 dir->dynindx = ind->dynindx;
1497 dir->dynstr_index = ind->dynstr_index;
1498 ind->dynindx = -1;
1499 ind->dynstr_index = 0;
1500 }
3c3e9281
AM		 1501 else
1502 BFD_ASSERT (ind->dynindx == -1);
2920b85c
RH		 1503}
1504
c61b8717 1505void
e5094212
AM		 1506_bfd_elf_link_hash_hide_symbol (info, h, force_local)
1507 struct bfd_link_info *info;
2920b85c 1508 struct elf_link_hash_entry *h;
b34976b6 1509 bfd_boolean force_local;
2920b85c 1510{
5cab59f6 1511 h->plt = elf_hash_table (info)->init_offset;
e5094212
AM		 1512 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1513 if (force_local)
1514 {
1515 h->elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL;
1516 if (h->dynindx != -1)
1517 {
1518 h->dynindx = -1;
1519 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1520 h->dynstr_index);
1521 }
1522 }
2920b85c
RH		 1523}
1524
252b5132
RH		 1525/* Initialize an ELF linker hash table. */
1526
b34976b6 1527bfd_boolean
252b5132
RH		 1528_bfd_elf_link_hash_table_init (table, abfd, newfunc)
1529 struct elf_link_hash_table *table;
1530 bfd *abfd;
b34976b6
AM		 1531 struct bfd_hash_entry *(*newfunc)
1532 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *,
1533 const char *));
252b5132 1534{
b34976b6 1535 bfd_boolean ret;
8ea2e4bd 1536
b34976b6 1537 table->dynamic_sections_created = FALSE;
252b5132 1538 table->dynobj = NULL;
963f13ec
AO		 1539 /* Make sure can_refcount is extended to the width and signedness of
1540 init_refcount before we subtract one from it. */
5cab59f6
AM		 1541 table->init_refcount.refcount = get_elf_backend_data (abfd)->can_refcount;
1542 table->init_refcount.refcount -= 1;
1543 table->init_offset.offset = -(bfd_vma) 1;
252b5132
RH		 1544 /* The first dynamic symbol is a dummy. */
1545 table->dynsymcount = 1;
1546 table->dynstr = NULL;
1547 table->bucketcount = 0;
1548 table->needed = NULL;
1549 table->hgot = NULL;
1550 table->stab_info = NULL;
f5fa8ca2 1551 table->merge_info = NULL;
73722af0 1552 memset (&table->eh_info, 0, sizeof (table->eh_info));
1ae00f9d 1553 table->dynlocal = NULL;
73722af0
AM		 1554 table->runpath = NULL;
1555 table->tls_segment = NULL;
1556 table->loaded = NULL;
1557
1558 ret = _bfd_link_hash_table_init (&table->root, abfd, newfunc);
8ea2e4bd
NC		 1559 table->root.type = bfd_link_elf_hash_table;
1560
1561 return ret;
252b5132
RH		 1562}
1563
1564/* Create an ELF linker hash table. */
1565
1566struct bfd_link_hash_table *
1567_bfd_elf_link_hash_table_create (abfd)
1568 bfd *abfd;
1569{
1570 struct elf_link_hash_table *ret;
dc810e39 1571 bfd_size_type amt = sizeof (struct elf_link_hash_table);
252b5132 1572
e2d34d7d 1573 ret = (struct elf_link_hash_table *) bfd_malloc (amt);
252b5132
RH		 1574 if (ret == (struct elf_link_hash_table *) NULL)
1575 return NULL;
1576
1577 if (! _bfd_elf_link_hash_table_init (ret, abfd, _bfd_elf_link_hash_newfunc))
1578 {
e2d34d7d 1579 free (ret);
252b5132
RH		 1580 return NULL;
1581 }
1582
1583 return &ret->root;
1584}
1585
1586/* This is a hook for the ELF emulation code in the generic linker to
1587 tell the backend linker what file name to use for the DT_NEEDED
1588 entry for a dynamic object. The generic linker passes name as an
1589 empty string to indicate that no DT_NEEDED entry should be made. */
1590
1591void
1592bfd_elf_set_dt_needed_name (abfd, name)
1593 bfd *abfd;
1594 const char *name;
1595{
1596 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
1597 && bfd_get_format (abfd) == bfd_object)
1598 elf_dt_name (abfd) = name;
1599}
1600
74816898
L		 1601void
1602bfd_elf_set_dt_needed_soname (abfd, name)
1603 bfd *abfd;
1604 const char *name;
1605{
1606 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
1607 && bfd_get_format (abfd) == bfd_object)
1608 elf_dt_soname (abfd) = name;
1609}
1610
252b5132
RH		 1611/* Get the list of DT_NEEDED entries for a link. This is a hook for
1612 the linker ELF emulation code. */
1613
1614struct bfd_link_needed_list *
1615bfd_elf_get_needed_list (abfd, info)
7442e600 1616 bfd *abfd ATTRIBUTE_UNUSED;
252b5132
RH		 1617 struct bfd_link_info *info;
1618{
1619 if (info->hash->creator->flavour != bfd_target_elf_flavour)
1620 return NULL;
1621 return elf_hash_table (info)->needed;
1622}
1623
a963dc6a
L		 1624/* Get the list of DT_RPATH/DT_RUNPATH entries for a link. This is a
1625 hook for the linker ELF emulation code. */
1626
1627struct bfd_link_needed_list *
1628bfd_elf_get_runpath_list (abfd, info)
1629 bfd *abfd ATTRIBUTE_UNUSED;
1630 struct bfd_link_info *info;
1631{
1632 if (info->hash->creator->flavour != bfd_target_elf_flavour)
1633 return NULL;
1634 return elf_hash_table (info)->runpath;
1635}
1636
252b5132
RH		 1637/* Get the name actually used for a dynamic object for a link. This
1638 is the SONAME entry if there is one. Otherwise, it is the string
1639 passed to bfd_elf_set_dt_needed_name, or it is the filename. */
1640
1641const char *
1642bfd_elf_get_dt_soname (abfd)
1643 bfd *abfd;
1644{
1645 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
1646 && bfd_get_format (abfd) == bfd_object)
1647 return elf_dt_name (abfd);
1648 return NULL;
1649}
1650
1651/* Get the list of DT_NEEDED entries from a BFD. This is a hook for
1652 the ELF linker emulation code. */
1653
b34976b6 1654bfd_boolean
252b5132
RH		 1655bfd_elf_get_bfd_needed_list (abfd, pneeded)
1656 bfd *abfd;
1657 struct bfd_link_needed_list **pneeded;
1658{
1659 asection *s;
1660 bfd_byte *dynbuf = NULL;
1661 int elfsec;
dc810e39 1662 unsigned long shlink;
252b5132
RH		 1663 bfd_byte *extdyn, *extdynend;
1664 size_t extdynsize;
1665 void (*swap_dyn_in) PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *));
1666
1667 *pneeded = NULL;
1668
1669 if (bfd_get_flavour (abfd) != bfd_target_elf_flavour
1670 || bfd_get_format (abfd) != bfd_object)
b34976b6 1671 return TRUE;
252b5132
RH		 1672
1673 s = bfd_get_section_by_name (abfd, ".dynamic");
1674 if (s == NULL || s->_raw_size == 0)
b34976b6 1675 return TRUE;
252b5132
RH		 1676
1677 dynbuf = (bfd_byte *) bfd_malloc (s->_raw_size);
1678 if (dynbuf == NULL)
1679 goto error_return;
1680
1681 if (! bfd_get_section_contents (abfd, s, (PTR) dynbuf, (file_ptr) 0,
1682 s->_raw_size))
1683 goto error_return;
1684
1685 elfsec = _bfd_elf_section_from_bfd_section (abfd, s);
1686 if (elfsec == -1)
1687 goto error_return;
1688
dc810e39 1689 shlink = elf_elfsections (abfd)[elfsec]->sh_link;
252b5132
RH		 1690
1691 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
1692 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
1693
1694 extdyn = dynbuf;
1695 extdynend = extdyn + s->_raw_size;
1696 for (; extdyn < extdynend; extdyn += extdynsize)
1697 {
1698 Elf_Internal_Dyn dyn;
1699
1700 (*swap_dyn_in) (abfd, (PTR) extdyn, &dyn);
1701
1702 if (dyn.d_tag == DT_NULL)
1703 break;
1704
1705 if (dyn.d_tag == DT_NEEDED)
1706 {
1707 const char *string;
1708 struct bfd_link_needed_list *l;
dc810e39
AM		 1709 unsigned int tagv = dyn.d_un.d_val;
1710 bfd_size_type amt;
252b5132 1711
dc810e39 1712 string = bfd_elf_string_from_elf_section (abfd, shlink, tagv);
252b5132
RH		 1713 if (string == NULL)
1714 goto error_return;
1715
dc810e39
AM		 1716 amt = sizeof *l;
1717 l = (struct bfd_link_needed_list *) bfd_alloc (abfd, amt);
252b5132
RH		 1718 if (l == NULL)
1719 goto error_return;
1720
1721 l->by = abfd;
1722 l->name = string;
1723 l->next = *pneeded;
1724 *pneeded = l;
1725 }
1726 }
1727
1728 free (dynbuf);
1729
b34976b6 1730 return TRUE;
252b5132
RH		 1731
1732 error_return:
1733 if (dynbuf != NULL)
1734 free (dynbuf);
b34976b6 1735 return FALSE;
252b5132
RH		 1736}
1737\f
1738/* Allocate an ELF string table--force the first byte to be zero. */
1739
1740struct bfd_strtab_hash *
1741_bfd_elf_stringtab_init ()
1742{
1743 struct bfd_strtab_hash *ret;
1744
1745 ret = _bfd_stringtab_init ();
1746 if (ret != NULL)
1747 {
1748 bfd_size_type loc;
1749
b34976b6 1750 loc = _bfd_stringtab_add (ret, "", TRUE, FALSE);
252b5132
RH		 1751 BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1);
1752 if (loc == (bfd_size_type) -1)
1753 {
1754 _bfd_stringtab_free (ret);
1755 ret = NULL;
1756 }
1757 }
1758 return ret;
1759}
1760\f
1761/* ELF .o/exec file reading */
1762
c044fabd 1763/* Create a new bfd section from an ELF section header. */
252b5132 1764
b34976b6 1765bfd_boolean
252b5132
RH		 1766bfd_section_from_shdr (abfd, shindex)
1767 bfd *abfd;
1768 unsigned int shindex;
1769{
1770 Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex];
1771 Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd);
1772 struct elf_backend_data *bed = get_elf_backend_data (abfd);
90937f86 1773 const char *name;
252b5132
RH		 1774
1775 name = elf_string_from_elf_strtab (abfd, hdr->sh_name);
1776
1777 switch (hdr->sh_type)
1778 {
1779 case SHT_NULL:
1780 /* Inactive section. Throw it away. */
b34976b6 1781 return TRUE;
252b5132
RH		 1782
1783 case SHT_PROGBITS: /* Normal section with contents. */
252b5132
RH		 1784 case SHT_NOBITS: /* .bss section. */
1785 case SHT_HASH: /* .hash section. */
1786 case SHT_NOTE: /* .note section. */
25e27870
L		 1787 case SHT_INIT_ARRAY: /* .init_array section. */
1788 case SHT_FINI_ARRAY: /* .fini_array section. */
1789 case SHT_PREINIT_ARRAY: /* .preinit_array section. */
252b5132
RH		 1790 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1791
797fc050
AM		 1792 case SHT_DYNAMIC: /* Dynamic linking information. */
1793 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
b34976b6 1794 return FALSE;
797fc050
AM		 1795 if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB)
1796 {
1797 Elf_Internal_Shdr *dynsymhdr;
1798
1799 /* The shared libraries distributed with hpux11 have a bogus
1800 sh_link field for the ".dynamic" section. Find the
1801 string table for the ".dynsym" section instead. */
1802 if (elf_dynsymtab (abfd) != 0)
1803 {
1804 dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)];
1805 hdr->sh_link = dynsymhdr->sh_link;
1806 }
1807 else
1808 {
1809 unsigned int i, num_sec;
1810
1811 num_sec = elf_numsections (abfd);
1812 for (i = 1; i < num_sec; i++)
1813 {
1814 dynsymhdr = elf_elfsections (abfd)[i];
1815 if (dynsymhdr->sh_type == SHT_DYNSYM)
1816 {
1817 hdr->sh_link = dynsymhdr->sh_link;
1818 break;
1819 }
1820 }
1821 }
1822 }
1823 break;
1824
252b5132
RH		 1825 case SHT_SYMTAB: /* A symbol table */
1826 if (elf_onesymtab (abfd) == shindex)
b34976b6 1827 return TRUE;
252b5132
RH		 1828
1829 BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym);
1830 BFD_ASSERT (elf_onesymtab (abfd) == 0);
1831 elf_onesymtab (abfd) = shindex;
1832 elf_tdata (abfd)->symtab_hdr = *hdr;
1833 elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr;
1834 abfd->flags |= HAS_SYMS;
1835
1836 /* Sometimes a shared object will map in the symbol table. If
1837 SHF_ALLOC is set, and this is a shared object, then we also
1838 treat this section as a BFD section. We can not base the
1839 decision purely on SHF_ALLOC, because that flag is sometimes
1840 set in a relocateable object file, which would confuse the
1841 linker. */
1842 if ((hdr->sh_flags & SHF_ALLOC) != 0
1843 && (abfd->flags & DYNAMIC) != 0
1844 && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
b34976b6 1845 return FALSE;
252b5132 1846
b34976b6 1847 return TRUE;
252b5132
RH		 1848
1849 case SHT_DYNSYM: /* A dynamic symbol table */
1850 if (elf_dynsymtab (abfd) == shindex)
b34976b6 1851 return TRUE;
252b5132
RH		 1852
1853 BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym);
1854 BFD_ASSERT (elf_dynsymtab (abfd) == 0);
1855 elf_dynsymtab (abfd) = shindex;
1856 elf_tdata (abfd)->dynsymtab_hdr = *hdr;
1857 elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr;
1858 abfd->flags |= HAS_SYMS;
1859
1860 /* Besides being a symbol table, we also treat this as a regular
1861 section, so that objcopy can handle it. */
1862 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1863
9ad5cbcf
AM		 1864 case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */
1865 if (elf_symtab_shndx (abfd) == shindex)
b34976b6 1866 return TRUE;
9ad5cbcf
AM		 1867
1868 /* Get the associated symbol table. */
1869 if (! bfd_section_from_shdr (abfd, hdr->sh_link)
1870 || hdr->sh_link != elf_onesymtab (abfd))
b34976b6 1871 return FALSE;
9ad5cbcf
AM		 1872
1873 elf_symtab_shndx (abfd) = shindex;
1874 elf_tdata (abfd)->symtab_shndx_hdr = *hdr;
1875 elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr;
b34976b6 1876 return TRUE;
9ad5cbcf 1877
252b5132
RH		 1878 case SHT_STRTAB: /* A string table */
1879 if (hdr->bfd_section != NULL)
b34976b6 1880 return TRUE;
252b5132
RH		 1881 if (ehdr->e_shstrndx == shindex)
1882 {
1883 elf_tdata (abfd)->shstrtab_hdr = *hdr;
1884 elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr;
b34976b6 1885 return TRUE;
252b5132
RH		 1886 }
1887 {
9ad5cbcf 1888 unsigned int i, num_sec;
252b5132 1889
9ad5cbcf
AM		 1890 num_sec = elf_numsections (abfd);
1891 for (i = 1; i < num_sec; i++)
252b5132
RH		 1892 {
1893 Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i];
1894 if (hdr2->sh_link == shindex)
1895 {
1896 if (! bfd_section_from_shdr (abfd, i))
b34976b6 1897 return FALSE;
252b5132
RH		 1898 if (elf_onesymtab (abfd) == i)
1899 {
1900 elf_tdata (abfd)->strtab_hdr = *hdr;
1901 elf_elfsections (abfd)[shindex] =
1902 &elf_tdata (abfd)->strtab_hdr;
b34976b6 1903 return TRUE;
252b5132
RH		 1904 }
1905 if (elf_dynsymtab (abfd) == i)
1906 {
1907 elf_tdata (abfd)->dynstrtab_hdr = *hdr;
1908 elf_elfsections (abfd)[shindex] = hdr =
1909 &elf_tdata (abfd)->dynstrtab_hdr;
1910 /* We also treat this as a regular section, so
1911 that objcopy can handle it. */
1912 break;
1913 }
1914#if 0 /* Not handling other string tables specially right now. */
1915 hdr2 = elf_elfsections (abfd)[i]; /* in case it moved */
1916 /* We have a strtab for some random other section. */
1917 newsect = (asection *) hdr2->bfd_section;
1918 if (!newsect)
1919 break;
1920 hdr->bfd_section = newsect;
1921 hdr2 = &elf_section_data (newsect)->str_hdr;
1922 *hdr2 = *hdr;
1923 elf_elfsections (abfd)[shindex] = hdr2;
1924#endif
1925 }
1926 }
1927 }
1928
1929 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1930
1931 case SHT_REL:
1932 case SHT_RELA:
1933 /* *These* do a lot of work -- but build no sections! */
1934 {
1935 asection *target_sect;
1936 Elf_Internal_Shdr *hdr2;
9ad5cbcf 1937 unsigned int num_sec = elf_numsections (abfd);
252b5132 1938
03ae5f59 1939 /* Check for a bogus link to avoid crashing. */
9ad5cbcf
AM		 1940 if ((hdr->sh_link >= SHN_LORESERVE && hdr->sh_link <= SHN_HIRESERVE)
1941 || hdr->sh_link >= num_sec)
03ae5f59
ILT		 1942 {
1943 ((*_bfd_error_handler)
1944 (_("%s: invalid link %lu for reloc section %s (index %u)"),
8f615d07 1945 bfd_archive_filename (abfd), hdr->sh_link, name, shindex));
03ae5f59
ILT		 1946 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1947 }
1948
252b5132
RH		 1949 /* For some incomprehensible reason Oracle distributes
1950 libraries for Solaris in which some of the objects have
1951 bogus sh_link fields. It would be nice if we could just
1952 reject them, but, unfortunately, some people need to use
1953 them. We scan through the section headers; if we find only
1954 one suitable symbol table, we clobber the sh_link to point
1955 to it. I hope this doesn't break anything. */
1956 if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB
1957 && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM)
1958 {
9ad5cbcf 1959 unsigned int scan;
252b5132
RH		 1960 int found;
1961
1962 found = 0;
9ad5cbcf 1963 for (scan = 1; scan < num_sec; scan++)
252b5132
RH		 1964 {
1965 if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB
1966 || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM)
1967 {
1968 if (found != 0)
1969 {
1970 found = 0;
1971 break;
1972 }
1973 found = scan;
1974 }
1975 }
1976 if (found != 0)
1977 hdr->sh_link = found;
1978 }
1979
1980 /* Get the symbol table. */
1981 if (elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB
1982 && ! bfd_section_from_shdr (abfd, hdr->sh_link))
b34976b6 1983 return FALSE;
252b5132
RH		 1984
1985 /* If this reloc section does not use the main symbol table we
1986 don't treat it as a reloc section. BFD can't adequately
1987 represent such a section, so at least for now, we don't
c044fabd 1988 try. We just present it as a normal section. We also
60bcf0fa 1989 can't use it as a reloc section if it points to the null
c044fabd 1990 section. */
60bcf0fa 1991 if (hdr->sh_link != elf_onesymtab (abfd) || hdr->sh_info == SHN_UNDEF)
252b5132
RH		 1992 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1993
1994 if (! bfd_section_from_shdr (abfd, hdr->sh_info))
b34976b6 1995 return FALSE;
252b5132
RH		 1996 target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info);
1997 if (target_sect == NULL)
b34976b6 1998 return FALSE;
252b5132
RH		 1999
2000 if ((target_sect->flags & SEC_RELOC) == 0
2001 || target_sect->reloc_count == 0)
2002 hdr2 = &elf_section_data (target_sect)->rel_hdr;
2003 else
2004 {
dc810e39 2005 bfd_size_type amt;
252b5132 2006 BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL);
dc810e39
AM		 2007 amt = sizeof (*hdr2);
2008 hdr2 = (Elf_Internal_Shdr *) bfd_alloc (abfd, amt);
252b5132
RH		 2009 elf_section_data (target_sect)->rel_hdr2 = hdr2;
2010 }
2011 *hdr2 = *hdr;
2012 elf_elfsections (abfd)[shindex] = hdr2;
d9bc7a44 2013 target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr);
252b5132
RH		 2014 target_sect->flags |= SEC_RELOC;
2015 target_sect->relocation = NULL;
2016 target_sect->rel_filepos = hdr->sh_offset;
bf572ba0
MM		 2017 /* In the section to which the relocations apply, mark whether
2018 its relocations are of the REL or RELA variety. */
72730e0c 2019 if (hdr->sh_size != 0)
68bfbfcc 2020 target_sect->use_rela_p = hdr->sh_type == SHT_RELA;
252b5132 2021 abfd->flags |= HAS_RELOC;
b34976b6 2022 return TRUE;
252b5132
RH		 2023 }
2024 break;
2025
2026 case SHT_GNU_verdef:
2027 elf_dynverdef (abfd) = shindex;
2028 elf_tdata (abfd)->dynverdef_hdr = *hdr;
2029 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
2030 break;
2031
2032 case SHT_GNU_versym:
2033 elf_dynversym (abfd) = shindex;
2034 elf_tdata (abfd)->dynversym_hdr = *hdr;
2035 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
2036 break;
2037
2038 case SHT_GNU_verneed:
2039 elf_dynverref (abfd) = shindex;
2040 elf_tdata (abfd)->dynverref_hdr = *hdr;
2041 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
2042 break;
2043
2044 case SHT_SHLIB:
b34976b6 2045 return TRUE;
252b5132 2046
dbb410c3 2047 case SHT_GROUP:
b885599b
AM		 2048 /* We need a BFD section for objcopy and relocatable linking,
2049 and it's handy to have the signature available as the section
2050 name. */
2051 name = group_signature (abfd, hdr);
2052 if (name == NULL)
b34976b6 2053 return FALSE;
dbb410c3 2054 if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name))
b34976b6 2055 return FALSE;
dbb410c3
AM		 2056 if (hdr->contents != NULL)
2057 {
2058 Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents;
2059 unsigned int n_elt = hdr->sh_size / 4;
2060 asection *s;
2061
b885599b
AM		 2062 if (idx->flags & GRP_COMDAT)
2063 hdr->bfd_section->flags
2064 |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
2065
dbb410c3
AM		 2066 while (--n_elt != 0)
2067 if ((s = (++idx)->shdr->bfd_section) != NULL
945906ff 2068 && elf_next_in_group (s) != NULL)
dbb410c3 2069 {
945906ff 2070 elf_next_in_group (hdr->bfd_section) = s;
dbb410c3
AM		 2071 break;
2072 }
2073 }
2074 break;
2075
252b5132
RH		 2076 default:
2077 /* Check for any processor-specific section types. */
2078 {
2079 if (bed->elf_backend_section_from_shdr)
2080 (*bed->elf_backend_section_from_shdr) (abfd, hdr, name);
2081 }
2082 break;
2083 }
2084
b34976b6 2085 return TRUE;
252b5132
RH		 2086}
2087
ec338859
AM		 2088/* Return the section for the local symbol specified by ABFD, R_SYMNDX.
2089 Return SEC for sections that have no elf section, and NULL on error. */
2090
2091asection *
2092bfd_section_from_r_symndx (abfd, cache, sec, r_symndx)
2093 bfd *abfd;
2094 struct sym_sec_cache *cache;
2095 asection *sec;
2096 unsigned long r_symndx;
2097{
ec338859 2098 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc
AM		 2099 unsigned char esym[sizeof (Elf64_External_Sym)];
2100 Elf_External_Sym_Shndx eshndx;
2101 Elf_Internal_Sym isym;
ec338859
AM		 2102 unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE;
2103
2104 if (cache->abfd == abfd && cache->indx[ent] == r_symndx)
2105 return cache->sec[ent];
2106
2107 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
6cdc0ccc
AM		 2108 if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx,
2109 &isym, esym, &eshndx) == NULL)
ec338859 2110 return NULL;
9ad5cbcf 2111
ec338859
AM		 2112 if (cache->abfd != abfd)
2113 {
2114 memset (cache->indx, -1, sizeof (cache->indx));
2115 cache->abfd = abfd;
2116 }
2117 cache->indx[ent] = r_symndx;
2118 cache->sec[ent] = sec;
6cdc0ccc 2119 if (isym.st_shndx < SHN_LORESERVE || isym.st_shndx > SHN_HIRESERVE)
ec338859
AM		 2120 {
2121 asection *s;
6cdc0ccc 2122 s = bfd_section_from_elf_index (abfd, isym.st_shndx);
ec338859
AM		 2123 if (s != NULL)
2124 cache->sec[ent] = s;
2125 }
2126 return cache->sec[ent];
2127}
2128
252b5132
RH		 2129/* Given an ELF section number, retrieve the corresponding BFD
2130 section. */
2131
2132asection *
2133bfd_section_from_elf_index (abfd, index)
2134 bfd *abfd;
2135 unsigned int index;
2136{
9ad5cbcf 2137 if (index >= elf_numsections (abfd))
252b5132
RH		 2138 return NULL;
2139 return elf_elfsections (abfd)[index]->bfd_section;
2140}
2141
b34976b6 2142bfd_boolean
252b5132
RH		 2143_bfd_elf_new_section_hook (abfd, sec)
2144 bfd *abfd;
2145 asection *sec;
2146{
2147 struct bfd_elf_section_data *sdata;
2148
f0abc2a1
AM		 2149 sdata = (struct bfd_elf_section_data *) sec->used_by_bfd;
2150 if (sdata == NULL)
2151 {
2152 bfd_size_type amt = sizeof (*sdata);
2153 sdata = (struct bfd_elf_section_data *) bfd_zalloc (abfd, amt);
2154 if (sdata == NULL)
2155 return FALSE;
2156 sec->used_by_bfd = (PTR) sdata;
2157 }
bf572ba0
MM		 2158
2159 /* Indicate whether or not this section should use RELA relocations. */
68bfbfcc 2160 sec->use_rela_p = get_elf_backend_data (abfd)->default_use_rela_p;
bf572ba0 2161
b34976b6 2162 return TRUE;
252b5132
RH		 2163}
2164
2165/* Create a new bfd section from an ELF program header.
2166
2167 Since program segments have no names, we generate a synthetic name
2168 of the form segment<NUM>, where NUM is generally the index in the
2169 program header table. For segments that are split (see below) we
2170 generate the names segment<NUM>a and segment<NUM>b.
2171
2172 Note that some program segments may have a file size that is different than
2173 (less than) the memory size. All this means is that at execution the
2174 system must allocate the amount of memory specified by the memory size,
2175 but only initialize it with the first "file size" bytes read from the
2176 file. This would occur for example, with program segments consisting
2177 of combined data+bss.
2178
2179 To handle the above situation, this routine generates TWO bfd sections
2180 for the single program segment. The first has the length specified by
2181 the file size of the segment, and the second has the length specified
2182 by the difference between the two sizes. In effect, the segment is split
2183 into it's initialized and uninitialized parts.
2184
2185 */
2186
b34976b6 2187bfd_boolean
20cfcaae 2188_bfd_elf_make_section_from_phdr (abfd, hdr, index, typename)
252b5132
RH		 2189 bfd *abfd;
2190 Elf_Internal_Phdr *hdr;
2191 int index;
20cfcaae 2192 const char *typename;
252b5132
RH		 2193{
2194 asection *newsect;
2195 char *name;
2196 char namebuf[64];
d4c88bbb 2197 size_t len;
252b5132
RH		 2198 int split;
2199
2200 split = ((hdr->p_memsz > 0)
2201 && (hdr->p_filesz > 0)
2202 && (hdr->p_memsz > hdr->p_filesz));
27ac83bf 2203 sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : "");
d4c88bbb
AM		 2204 len = strlen (namebuf) + 1;
2205 name = bfd_alloc (abfd, (bfd_size_type) len);
252b5132 2206 if (!name)
b34976b6 2207 return FALSE;
d4c88bbb 2208 memcpy (name, namebuf, len);
252b5132
RH		 2209 newsect = bfd_make_section (abfd, name);
2210 if (newsect == NULL)
b34976b6 2211 return FALSE;
252b5132
RH		 2212 newsect->vma = hdr->p_vaddr;
2213 newsect->lma = hdr->p_paddr;
2214 newsect->_raw_size = hdr->p_filesz;
2215 newsect->filepos = hdr->p_offset;
2216 newsect->flags |= SEC_HAS_CONTENTS;
2217 if (hdr->p_type == PT_LOAD)
2218 {
2219 newsect->flags |= SEC_ALLOC;
2220 newsect->flags |= SEC_LOAD;
2221 if (hdr->p_flags & PF_X)
2222 {
2223 /* FIXME: all we known is that it has execute PERMISSION,
c044fabd 2224 may be data. */
252b5132
RH		 2225 newsect->flags |= SEC_CODE;
2226 }
2227 }
2228 if (!(hdr->p_flags & PF_W))
2229 {
2230 newsect->flags |= SEC_READONLY;
2231 }
2232
2233 if (split)
2234 {
27ac83bf 2235 sprintf (namebuf, "%s%db", typename, index);
d4c88bbb
AM		 2236 len = strlen (namebuf) + 1;
2237 name = bfd_alloc (abfd, (bfd_size_type) len);
252b5132 2238 if (!name)
b34976b6 2239 return FALSE;
d4c88bbb 2240 memcpy (name, namebuf, len);
252b5132
RH		 2241 newsect = bfd_make_section (abfd, name);
2242 if (newsect == NULL)
b34976b6 2243 return FALSE;
252b5132
RH		 2244 newsect->vma = hdr->p_vaddr + hdr->p_filesz;
2245 newsect->lma = hdr->p_paddr + hdr->p_filesz;
2246 newsect->_raw_size = hdr->p_memsz - hdr->p_filesz;
2247 if (hdr->p_type == PT_LOAD)
2248 {
2249 newsect->flags |= SEC_ALLOC;
2250 if (hdr->p_flags & PF_X)
2251 newsect->flags |= SEC_CODE;
2252 }
2253 if (!(hdr->p_flags & PF_W))
2254 newsect->flags |= SEC_READONLY;
2255 }
2256
b34976b6 2257 return TRUE;
252b5132
RH		 2258}
2259
b34976b6 2260bfd_boolean
20cfcaae
NC		 2261bfd_section_from_phdr (abfd, hdr, index)
2262 bfd *abfd;
2263 Elf_Internal_Phdr *hdr;
2264 int index;
2265{
2266 struct elf_backend_data *bed;
2267
2268 switch (hdr->p_type)
2269 {
2270 case PT_NULL:
2271 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "null");
2272
2273 case PT_LOAD:
2274 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "load");
2275
2276 case PT_DYNAMIC:
2277 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "dynamic");
2278
2279 case PT_INTERP:
2280 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "interp");
2281
2282 case PT_NOTE:
2283 if (! _bfd_elf_make_section_from_phdr (abfd, hdr, index, "note"))
b34976b6 2284 return FALSE;
dc810e39 2285 if (! elfcore_read_notes (abfd, (file_ptr) hdr->p_offset, hdr->p_filesz))
b34976b6
AM		 2286 return FALSE;
2287 return TRUE;
20cfcaae
NC		 2288
2289 case PT_SHLIB:
2290 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "shlib");
2291
2292 case PT_PHDR:
2293 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "phdr");
2294
2295 default:
2296 /* Check for any processor-specific program segment types.
c044fabd 2297 If no handler for them, default to making "segment" sections. */
20cfcaae
NC		 2298 bed = get_elf_backend_data (abfd);
2299 if (bed->elf_backend_section_from_phdr)
2300 return (*bed->elf_backend_section_from_phdr) (abfd, hdr, index);
2301 else
2302 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "segment");
2303 }
2304}
2305
23bc299b 2306/* Initialize REL_HDR, the section-header for new section, containing
b34976b6 2307 relocations against ASECT. If USE_RELA_P is TRUE, we use RELA
23bc299b
MM		 2308 relocations; otherwise, we use REL relocations. */
2309
b34976b6 2310bfd_boolean
23bc299b
MM		 2311_bfd_elf_init_reloc_shdr (abfd, rel_hdr, asect, use_rela_p)
2312 bfd *abfd;
2313 Elf_Internal_Shdr *rel_hdr;
2314 asection *asect;
b34976b6 2315 bfd_boolean use_rela_p;
23bc299b
MM		 2316{
2317 char *name;
dc810e39
AM		 2318 struct elf_backend_data *bed = get_elf_backend_data (abfd);
2319 bfd_size_type amt = sizeof ".rela" + strlen (asect->name);
23bc299b 2320
dc810e39 2321 name = bfd_alloc (abfd, amt);
23bc299b 2322 if (name == NULL)
b34976b6 2323 return FALSE;
23bc299b
MM		 2324 sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name);
2325 rel_hdr->sh_name =
2b0f7ef9 2326 (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name,
b34976b6 2327 FALSE);
23bc299b 2328 if (rel_hdr->sh_name == (unsigned int) -1)
b34976b6 2329 return FALSE;
23bc299b
MM		 2330 rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL;
2331 rel_hdr->sh_entsize = (use_rela_p
2332 ? bed->s->sizeof_rela
2333 : bed->s->sizeof_rel);
2334 rel_hdr->sh_addralign = bed->s->file_align;
2335 rel_hdr->sh_flags = 0;
2336 rel_hdr->sh_addr = 0;
2337 rel_hdr->sh_size = 0;
2338 rel_hdr->sh_offset = 0;
2339
b34976b6 2340 return TRUE;
23bc299b
MM		 2341}
2342
252b5132
RH		 2343/* Set up an ELF internal section header for a section. */
2344
252b5132
RH		 2345static void
2346elf_fake_sections (abfd, asect, failedptrarg)
2347 bfd *abfd;
2348 asection *asect;
2349 PTR failedptrarg;
2350{
2351 struct elf_backend_data *bed = get_elf_backend_data (abfd);
b34976b6 2352 bfd_boolean *failedptr = (bfd_boolean *) failedptrarg;
252b5132
RH		 2353 Elf_Internal_Shdr *this_hdr;
2354
2355 if (*failedptr)
2356 {
2357 /* We already failed; just get out of the bfd_map_over_sections
2358 loop. */
2359 return;
2360 }
2361
2362 this_hdr = &elf_section_data (asect)->this_hdr;
2363
2b0f7ef9 2364 this_hdr->sh_name = (unsigned long) _bfd_elf_strtab_add (elf_shstrtab (abfd),
b34976b6 2365 asect->name, FALSE);
252b5132
RH		 2366 if (this_hdr->sh_name == (unsigned long) -1)
2367 {
b34976b6 2368 *failedptr = TRUE;
252b5132
RH		 2369 return;
2370 }
2371
2372 this_hdr->sh_flags = 0;
2373
2374 if ((asect->flags & SEC_ALLOC) != 0
2375 || asect->user_set_vma)
2376 this_hdr->sh_addr = asect->vma;
2377 else
2378 this_hdr->sh_addr = 0;
2379
2380 this_hdr->sh_offset = 0;
2381 this_hdr->sh_size = asect->_raw_size;
2382 this_hdr->sh_link = 0;
2383 this_hdr->sh_addralign = 1 << asect->alignment_power;
2384 /* The sh_entsize and sh_info fields may have been set already by
2385 copy_private_section_data. */
2386
2387 this_hdr->bfd_section = asect;
2388 this_hdr->contents = NULL;
2389
2390 /* FIXME: This should not be based on section names. */
2391 if (strcmp (asect->name, ".dynstr") == 0)
2392 this_hdr->sh_type = SHT_STRTAB;
2393 else if (strcmp (asect->name, ".hash") == 0)
2394 {
2395 this_hdr->sh_type = SHT_HASH;
c7ac6ff8 2396 this_hdr->sh_entsize = bed->s->sizeof_hash_entry;
252b5132
RH		 2397 }
2398 else if (strcmp (asect->name, ".dynsym") == 0)
2399 {
2400 this_hdr->sh_type = SHT_DYNSYM;
2401 this_hdr->sh_entsize = bed->s->sizeof_sym;
2402 }
2403 else if (strcmp (asect->name, ".dynamic") == 0)
2404 {
2405 this_hdr->sh_type = SHT_DYNAMIC;
2406 this_hdr->sh_entsize = bed->s->sizeof_dyn;
2407 }
a9d024b8 2408 else if (strncmp (asect->name, ".rela", 5) == 0
bf572ba0 2409 && get_elf_backend_data (abfd)->may_use_rela_p)
252b5132
RH		 2410 {
2411 this_hdr->sh_type = SHT_RELA;
2412 this_hdr->sh_entsize = bed->s->sizeof_rela;
2413 }
a9d024b8 2414 else if (strncmp (asect->name, ".rel", 4) == 0
bf572ba0 2415 && get_elf_backend_data (abfd)->may_use_rel_p)
252b5132
RH		 2416 {
2417 this_hdr->sh_type = SHT_REL;
2418 this_hdr->sh_entsize = bed->s->sizeof_rel;
2419 }
25e27870
L		 2420 else if (strcmp (asect->name, ".init_array") == 0)
2421 this_hdr->sh_type = SHT_INIT_ARRAY;
2422 else if (strcmp (asect->name, ".fini_array") == 0)
2423 this_hdr->sh_type = SHT_FINI_ARRAY;
2424 else if (strcmp (asect->name, ".preinit_array") == 0)
2425 this_hdr->sh_type = SHT_PREINIT_ARRAY;
252b5132
RH		 2426 else if (strncmp (asect->name, ".note", 5) == 0)
2427 this_hdr->sh_type = SHT_NOTE;
2428 else if (strncmp (asect->name, ".stab", 5) == 0
2429 && strcmp (asect->name + strlen (asect->name) - 3, "str") == 0)
2430 this_hdr->sh_type = SHT_STRTAB;
2431 else if (strcmp (asect->name, ".gnu.version") == 0)
2432 {
2433 this_hdr->sh_type = SHT_GNU_versym;
2434 this_hdr->sh_entsize = sizeof (Elf_External_Versym);
2435 }
2436 else if (strcmp (asect->name, ".gnu.version_d") == 0)
2437 {
2438 this_hdr->sh_type = SHT_GNU_verdef;
2439 this_hdr->sh_entsize = 0;
2440 /* objcopy or strip will copy over sh_info, but may not set
2441 cverdefs. The linker will set cverdefs, but sh_info will be
2442 zero. */
2443 if (this_hdr->sh_info == 0)
2444 this_hdr->sh_info = elf_tdata (abfd)->cverdefs;
2445 else
2446 BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0
2447 || this_hdr->sh_info == elf_tdata (abfd)->cverdefs);
2448 }
2449 else if (strcmp (asect->name, ".gnu.version_r") == 0)
2450 {
2451 this_hdr->sh_type = SHT_GNU_verneed;
2452 this_hdr->sh_entsize = 0;
2453 /* objcopy or strip will copy over sh_info, but may not set
2454 cverrefs. The linker will set cverrefs, but sh_info will be
2455 zero. */
2456 if (this_hdr->sh_info == 0)
2457 this_hdr->sh_info = elf_tdata (abfd)->cverrefs;
2458 else
2459 BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0
2460 || this_hdr->sh_info == elf_tdata (abfd)->cverrefs);
2461 }
dbb410c3
AM		 2462 else if ((asect->flags & SEC_GROUP) != 0)
2463 {
2464 this_hdr->sh_type = SHT_GROUP;
2465 this_hdr->sh_entsize = 4;
2466 }
252b5132 2467 else if ((asect->flags & SEC_ALLOC) != 0
edd29cf9
AM		 2468 && (((asect->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
2469 || (asect->flags & SEC_NEVER_LOAD) != 0))
252b5132
RH		 2470 this_hdr->sh_type = SHT_NOBITS;
2471 else
6c99a5c3 2472 this_hdr->sh_type = SHT_PROGBITS;
252b5132
RH		 2473
2474 if ((asect->flags & SEC_ALLOC) != 0)
2475 this_hdr->sh_flags |= SHF_ALLOC;
2476 if ((asect->flags & SEC_READONLY) == 0)
2477 this_hdr->sh_flags |= SHF_WRITE;
2478 if ((asect->flags & SEC_CODE) != 0)
2479 this_hdr->sh_flags |= SHF_EXECINSTR;
f5fa8ca2
JJ		 2480 if ((asect->flags & SEC_MERGE) != 0)
2481 {
2482 this_hdr->sh_flags |= SHF_MERGE;
2483 this_hdr->sh_entsize = asect->entsize;
2484 if ((asect->flags & SEC_STRINGS) != 0)
2485 this_hdr->sh_flags |= SHF_STRINGS;
2486 }
1126897b 2487 if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL)
dbb410c3 2488 this_hdr->sh_flags |= SHF_GROUP;
13ae64f3 2489 if ((asect->flags & SEC_THREAD_LOCAL) != 0)
704afa60
JJ		 2490 {
2491 this_hdr->sh_flags |= SHF_TLS;
2492 if (asect->_raw_size == 0 && (asect->flags & SEC_HAS_CONTENTS) == 0)
2493 {
2494 struct bfd_link_order *o;
b34976b6 2495
704afa60
JJ		 2496 this_hdr->sh_size = 0;
2497 for (o = asect->link_order_head; o != NULL; o = o->next)
2498 if (this_hdr->sh_size < o->offset + o->size)
2499 this_hdr->sh_size = o->offset + o->size;
2500 if (this_hdr->sh_size)
2501 this_hdr->sh_type = SHT_NOBITS;
2502 }
2503 }
252b5132
RH		 2504
2505 /* Check for processor-specific section types. */
e1fddb6b
AO		 2506 if (bed->elf_backend_fake_sections
2507 && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect))
b34976b6 2508 *failedptr = TRUE;
252b5132
RH		 2509
2510 /* If the section has relocs, set up a section header for the
23bc299b
MM		 2511 SHT_REL[A] section. If two relocation sections are required for
2512 this section, it is up to the processor-specific back-end to
c044fabd 2513 create the other. */
23bc299b 2514 if ((asect->flags & SEC_RELOC) != 0
c044fabd 2515 && !_bfd_elf_init_reloc_shdr (abfd,
23bc299b 2516 &elf_section_data (asect)->rel_hdr,
c044fabd 2517 asect,
68bfbfcc 2518 asect->use_rela_p))
b34976b6 2519 *failedptr = TRUE;
252b5132
RH		 2520}
2521
dbb410c3
AM		 2522/* Fill in the contents of a SHT_GROUP section. */
2523
1126897b
AM		 2524void
2525bfd_elf_set_group_contents (abfd, sec, failedptrarg)
dbb410c3
AM		 2526 bfd *abfd;
2527 asection *sec;
1126897b 2528 PTR failedptrarg;
dbb410c3 2529{
b34976b6 2530 bfd_boolean *failedptr = (bfd_boolean *) failedptrarg;
dbb410c3 2531 unsigned long symindx;
9dce4196 2532 asection *elt, *first;
dbb410c3
AM		 2533 unsigned char *loc;
2534 struct bfd_link_order *l;
b34976b6 2535 bfd_boolean gas;
dbb410c3
AM		 2536
2537 if (elf_section_data (sec)->this_hdr.sh_type != SHT_GROUP
2538 || *failedptr)
2539 return;
2540
1126897b
AM		 2541 symindx = 0;
2542 if (elf_group_id (sec) != NULL)
2543 symindx = elf_group_id (sec)->udata.i;
2544
2545 if (symindx == 0)
2546 {
2547 /* If called from the assembler, swap_out_syms will have set up
2548 elf_section_syms; If called for "ld -r", use target_index. */
2549 if (elf_section_syms (abfd) != NULL)
2550 symindx = elf_section_syms (abfd)[sec->index]->udata.i;
2551 else
2552 symindx = sec->target_index;
2553 }
dbb410c3
AM		 2554 elf_section_data (sec)->this_hdr.sh_info = symindx;
2555
1126897b 2556 /* The contents won't be allocated for "ld -r" or objcopy. */
b34976b6 2557 gas = TRUE;
dbb410c3
AM		 2558 if (sec->contents == NULL)
2559 {
b34976b6 2560 gas = FALSE;
dbb410c3 2561 sec->contents = bfd_alloc (abfd, sec->_raw_size);
9dce4196
AM		 2562
2563 /* Arrange for the section to be written out. */
2564 elf_section_data (sec)->this_hdr.contents = sec->contents;
dbb410c3
AM		 2565 if (sec->contents == NULL)
2566 {
b34976b6 2567 *failedptr = TRUE;
dbb410c3
AM		 2568 return;
2569 }
2570 }
2571
2572 loc = sec->contents + sec->_raw_size;
2573
9dce4196
AM		 2574 /* Get the pointer to the first section in the group that gas
2575 squirreled away here. objcopy arranges for this to be set to the
2576 start of the input section group. */
2577 first = elt = elf_next_in_group (sec);
dbb410c3
AM		 2578
2579 /* First element is a flag word. Rest of section is elf section
2580 indices for all the sections of the group. Write them backwards
2581 just to keep the group in the same order as given in .section
2582 directives, not that it matters. */
2583 while (elt != NULL)
2584 {
9dce4196
AM		 2585 asection *s;
2586 unsigned int idx;
2587
dbb410c3 2588 loc -= 4;
9dce4196
AM		 2589 s = elt;
2590 if (!gas)
2591 s = s->output_section;
2592 idx = 0;
2593 if (s != NULL)
2594 idx = elf_section_data (s)->this_idx;
2595 H_PUT_32 (abfd, idx, loc);
945906ff 2596 elt = elf_next_in_group (elt);
9dce4196
AM		 2597 if (elt == first)
2598 break;
dbb410c3
AM		 2599 }
2600
2601 /* If this is a relocatable link, then the above did nothing because
2602 SEC is the output section. Look through the input sections
2603 instead. */
2604 for (l = sec->link_order_head; l != NULL; l = l->next)
2605 if (l->type == bfd_indirect_link_order
945906ff 2606 && (elt = elf_next_in_group (l->u.indirect.section)) != NULL)
dbb410c3
AM		 2607 do
2608 {
2609 loc -= 4;
2610 H_PUT_32 (abfd,
2611 elf_section_data (elt->output_section)->this_idx, loc);
945906ff 2612 elt = elf_next_in_group (elt);
dbb410c3
AM		 2613 /* During a relocatable link, the lists are circular. */
2614 }
945906ff 2615 while (elt != elf_next_in_group (l->u.indirect.section));
dbb410c3 2616
9dce4196
AM		 2617 /* With ld -r, merging SHT_GROUP sections results in wasted space
2618 due to allowing for the flag word on each input. We may well
2619 duplicate entries too. */
2620 while ((loc -= 4) > sec->contents)
2621 H_PUT_32 (abfd, 0, loc);
2622
2623 if (loc != sec->contents)
2624 abort ();
dbb410c3 2625
9dce4196 2626 H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc);
dbb410c3
AM		 2627}
2628
252b5132
RH		 2629/* Assign all ELF section numbers. The dummy first section is handled here
2630 too. The link/info pointers for the standard section types are filled
2631 in here too, while we're at it. */
2632
b34976b6 2633static bfd_boolean
252b5132
RH		 2634assign_section_numbers (abfd)
2635 bfd *abfd;
2636{
2637 struct elf_obj_tdata *t = elf_tdata (abfd);
2638 asection *sec;
2b0f7ef9 2639 unsigned int section_number, secn;
252b5132 2640 Elf_Internal_Shdr **i_shdrp;
dc810e39 2641 bfd_size_type amt;
252b5132
RH		 2642
2643 section_number = 1;
2644
2b0f7ef9
JJ		 2645 _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd));
2646
252b5132
RH		 2647 for (sec = abfd->sections; sec; sec = sec->next)
2648 {
2649 struct bfd_elf_section_data *d = elf_section_data (sec);
2650
9ad5cbcf
AM		 2651 if (section_number == SHN_LORESERVE)
2652 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
252b5132 2653 d->this_idx = section_number++;
2b0f7ef9 2654 _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name);
252b5132
RH		 2655 if ((sec->flags & SEC_RELOC) == 0)
2656 d->rel_idx = 0;
2657 else
2b0f7ef9 2658 {
9ad5cbcf
AM		 2659 if (section_number == SHN_LORESERVE)
2660 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
2b0f7ef9
JJ		 2661 d->rel_idx = section_number++;
2662 _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr.sh_name);
2663 }
23bc299b
MM		 2664
2665 if (d->rel_hdr2)
2b0f7ef9 2666 {
9ad5cbcf
AM		 2667 if (section_number == SHN_LORESERVE)
2668 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
2b0f7ef9
JJ		 2669 d->rel_idx2 = section_number++;
2670 _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr2->sh_name);
2671 }
23bc299b
MM		 2672 else
2673 d->rel_idx2 = 0;
252b5132
RH		 2674 }
2675
9ad5cbcf
AM		 2676 if (section_number == SHN_LORESERVE)
2677 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
252b5132 2678 t->shstrtab_section = section_number++;
2b0f7ef9 2679 _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name);
252b5132 2680 elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section;
252b5132
RH		 2681
2682 if (bfd_get_symcount (abfd) > 0)
2683 {
9ad5cbcf
AM		 2684 if (section_number == SHN_LORESERVE)
2685 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
252b5132 2686 t->symtab_section = section_number++;
2b0f7ef9 2687 _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name);
9ad5cbcf
AM		 2688 if (section_number > SHN_LORESERVE - 2)
2689 {
2690 if (section_number == SHN_LORESERVE)
2691 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
2692 t->symtab_shndx_section = section_number++;
2693 t->symtab_shndx_hdr.sh_name
2694 = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd),
b34976b6 2695 ".symtab_shndx", FALSE);
9ad5cbcf 2696 if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1)
b34976b6 2697 return FALSE;
9ad5cbcf
AM		 2698 }
2699 if (section_number == SHN_LORESERVE)
2700 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
252b5132 2701 t->strtab_section = section_number++;
2b0f7ef9 2702 _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name);
252b5132
RH		 2703 }
2704
2b0f7ef9
JJ		 2705 _bfd_elf_strtab_finalize (elf_shstrtab (abfd));
2706 t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd));
9ad5cbcf
AM		 2707
2708 elf_numsections (abfd) = section_number;
252b5132 2709 elf_elfheader (abfd)->e_shnum = section_number;
9ad5cbcf
AM		 2710 if (section_number > SHN_LORESERVE)
2711 elf_elfheader (abfd)->e_shnum -= SHN_HIRESERVE + 1 - SHN_LORESERVE;
252b5132
RH		 2712
2713 /* Set up the list of section header pointers, in agreement with the
2714 indices. */
dc810e39 2715 amt = section_number * sizeof (Elf_Internal_Shdr *);
c97e73dd 2716 i_shdrp = (Elf_Internal_Shdr **) bfd_zalloc (abfd, amt);
252b5132 2717 if (i_shdrp == NULL)
b34976b6 2718 return FALSE;
252b5132 2719
dc810e39 2720 amt = sizeof (Elf_Internal_Shdr);
c97e73dd 2721 i_shdrp[0] = (Elf_Internal_Shdr *) bfd_zalloc (abfd, amt);
252b5132
RH		 2722 if (i_shdrp[0] == NULL)
2723 {
2724 bfd_release (abfd, i_shdrp);
b34976b6 2725 return FALSE;
252b5132 2726 }
252b5132
RH		 2727
2728 elf_elfsections (abfd) = i_shdrp;
2729
2730 i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr;
2731 if (bfd_get_symcount (abfd) > 0)
2732 {
2733 i_shdrp[t->symtab_section] = &t->symtab_hdr;
9ad5cbcf
AM		 2734 if (elf_numsections (abfd) > SHN_LORESERVE)
2735 {
2736 i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr;
2737 t->symtab_shndx_hdr.sh_link = t->symtab_section;
2738 }
252b5132
RH		 2739 i_shdrp[t->strtab_section] = &t->strtab_hdr;
2740 t->symtab_hdr.sh_link = t->strtab_section;
2741 }
2742 for (sec = abfd->sections; sec; sec = sec->next)
2743 {
2744 struct bfd_elf_section_data *d = elf_section_data (sec);
2745 asection *s;
2746 const char *name;
2747
2748 i_shdrp[d->this_idx] = &d->this_hdr;
2749 if (d->rel_idx != 0)
2750 i_shdrp[d->rel_idx] = &d->rel_hdr;
23bc299b
MM		 2751 if (d->rel_idx2 != 0)
2752 i_shdrp[d->rel_idx2] = d->rel_hdr2;
252b5132
RH		 2753
2754 /* Fill in the sh_link and sh_info fields while we're at it. */
2755
2756 /* sh_link of a reloc section is the section index of the symbol
2757 table. sh_info is the section index of the section to which
2758 the relocation entries apply. */
2759 if (d->rel_idx != 0)
2760 {
2761 d->rel_hdr.sh_link = t->symtab_section;
2762 d->rel_hdr.sh_info = d->this_idx;
2763 }
23bc299b
MM		 2764 if (d->rel_idx2 != 0)
2765 {
2766 d->rel_hdr2->sh_link = t->symtab_section;
2767 d->rel_hdr2->sh_info = d->this_idx;
2768 }
252b5132
RH		 2769
2770 switch (d->this_hdr.sh_type)
2771 {
2772 case SHT_REL:
2773 case SHT_RELA:
2774 /* A reloc section which we are treating as a normal BFD
2775 section. sh_link is the section index of the symbol
2776 table. sh_info is the section index of the section to
2777 which the relocation entries apply. We assume that an
2778 allocated reloc section uses the dynamic symbol table.
2779 FIXME: How can we be sure? */
2780 s = bfd_get_section_by_name (abfd, ".dynsym");
2781 if (s != NULL)
2782 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
2783
2784 /* We look up the section the relocs apply to by name. */
2785 name = sec->name;
2786 if (d->this_hdr.sh_type == SHT_REL)
2787 name += 4;
2788 else
2789 name += 5;
2790 s = bfd_get_section_by_name (abfd, name);
2791 if (s != NULL)
2792 d->this_hdr.sh_info = elf_section_data (s)->this_idx;
2793 break;
2794
2795 case SHT_STRTAB:
2796 /* We assume that a section named .stab*str is a stabs
2797 string section. We look for a section with the same name
2798 but without the trailing ``str'', and set its sh_link
2799 field to point to this section. */
2800 if (strncmp (sec->name, ".stab", sizeof ".stab" - 1) == 0
2801 && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0)
2802 {
2803 size_t len;
2804 char *alc;
2805
2806 len = strlen (sec->name);
d4c88bbb 2807 alc = (char *) bfd_malloc ((bfd_size_type) (len - 2));
252b5132 2808 if (alc == NULL)
b34976b6 2809 return FALSE;
d4c88bbb 2810 memcpy (alc, sec->name, len - 3);
252b5132
RH		 2811 alc[len - 3] = '\0';
2812 s = bfd_get_section_by_name (abfd, alc);
2813 free (alc);
2814 if (s != NULL)
2815 {
2816 elf_section_data (s)->this_hdr.sh_link = d->this_idx;
2817
2818 /* This is a .stab section. */
0594c12d
AM		 2819 if (elf_section_data (s)->this_hdr.sh_entsize == 0)
2820 elf_section_data (s)->this_hdr.sh_entsize
2821 = 4 + 2 * bfd_get_arch_size (abfd) / 8;
252b5132
RH		 2822 }
2823 }
2824 break;
2825
2826 case SHT_DYNAMIC:
2827 case SHT_DYNSYM:
2828 case SHT_GNU_verneed:
2829 case SHT_GNU_verdef:
2830 /* sh_link is the section header index of the string table
2831 used for the dynamic entries, or the symbol table, or the
2832 version strings. */
2833 s = bfd_get_section_by_name (abfd, ".dynstr");
2834 if (s != NULL)
2835 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
2836 break;
2837
2838 case SHT_HASH:
2839 case SHT_GNU_versym:
2840 /* sh_link is the section header index of the symbol table
2841 this hash table or version table is for. */
2842 s = bfd_get_section_by_name (abfd, ".dynsym");
2843 if (s != NULL)
2844 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
2845 break;
dbb410c3
AM		 2846
2847 case SHT_GROUP:
2848 d->this_hdr.sh_link = t->symtab_section;
252b5132
RH		 2849 }
2850 }
2851
2b0f7ef9 2852 for (secn = 1; secn < section_number; ++secn)
9ad5cbcf
AM		 2853 if (i_shdrp[secn] == NULL)
2854 i_shdrp[secn] = i_shdrp[0];
2855 else
2856 i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd),
2857 i_shdrp[secn]->sh_name);
b34976b6 2858 return TRUE;
252b5132
RH		 2859}
2860
2861/* Map symbol from it's internal number to the external number, moving
2862 all local symbols to be at the head of the list. */
2863
2864static INLINE int
2865sym_is_global (abfd, sym)
2866 bfd *abfd;
2867 asymbol *sym;
2868{
2869 /* If the backend has a special mapping, use it. */
2870 if (get_elf_backend_data (abfd)->elf_backend_sym_is_global)
2871 return ((*get_elf_backend_data (abfd)->elf_backend_sym_is_global)
2872 (abfd, sym));
2873
2874 return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0
2875 || bfd_is_und_section (bfd_get_section (sym))
2876 || bfd_is_com_section (bfd_get_section (sym)));
2877}
2878
b34976b6 2879static bfd_boolean
252b5132
RH		 2880elf_map_symbols (abfd)
2881 bfd *abfd;
2882{
dc810e39 2883 unsigned int symcount = bfd_get_symcount (abfd);
252b5132
RH		 2884 asymbol **syms = bfd_get_outsymbols (abfd);
2885 asymbol **sect_syms;
dc810e39
AM		 2886 unsigned int num_locals = 0;
2887 unsigned int num_globals = 0;
2888 unsigned int num_locals2 = 0;
2889 unsigned int num_globals2 = 0;
252b5132 2890 int max_index = 0;
dc810e39 2891 unsigned int idx;
252b5132
RH		 2892 asection *asect;
2893 asymbol **new_syms;
dc810e39 2894 bfd_size_type amt;
252b5132
RH		 2895
2896#ifdef DEBUG
2897 fprintf (stderr, "elf_map_symbols\n");
2898 fflush (stderr);
2899#endif
2900
252b5132
RH		 2901 for (asect = abfd->sections; asect; asect = asect->next)
2902 {
2903 if (max_index < asect->index)
2904 max_index = asect->index;
2905 }
2906
2907 max_index++;
dc810e39
AM		 2908 amt = max_index * sizeof (asymbol *);
2909 sect_syms = (asymbol **) bfd_zalloc (abfd, amt);
252b5132 2910 if (sect_syms == NULL)
b34976b6 2911 return FALSE;
252b5132 2912 elf_section_syms (abfd) = sect_syms;
4e89ac30 2913 elf_num_section_syms (abfd) = max_index;
252b5132 2914
079e9a2f
AM		 2915 /* Init sect_syms entries for any section symbols we have already
2916 decided to output. */
252b5132
RH		 2917 for (idx = 0; idx < symcount; idx++)
2918 {
dc810e39 2919 asymbol *sym = syms[idx];
c044fabd 2920
252b5132
RH		 2921 if ((sym->flags & BSF_SECTION_SYM) != 0
2922 && sym->value == 0)
2923 {
2924 asection *sec;
2925
2926 sec = sym->section;
2927
2928 if (sec->owner != NULL)
2929 {
2930 if (sec->owner != abfd)
2931 {
2932 if (sec->output_offset != 0)
2933 continue;
c044fabd 2934
252b5132
RH		 2935 sec = sec->output_section;
2936
079e9a2f
AM		 2937 /* Empty sections in the input files may have had a
2938 section symbol created for them. (See the comment
2939 near the end of _bfd_generic_link_output_symbols in
2940 linker.c). If the linker script discards such
2941 sections then we will reach this point. Since we know
2942 that we cannot avoid this case, we detect it and skip
2943 the abort and the assignment to the sect_syms array.
2944 To reproduce this particular case try running the
2945 linker testsuite test ld-scripts/weak.exp for an ELF
2946 port that uses the generic linker. */
252b5132
RH		 2947 if (sec->owner == NULL)
2948 continue;
2949
2950 BFD_ASSERT (sec->owner == abfd);
2951 }
2952 sect_syms[sec->index] = syms[idx];
2953 }
2954 }
2955 }
2956
252b5132
RH		 2957 /* Classify all of the symbols. */
2958 for (idx = 0; idx < symcount; idx++)
2959 {
2960 if (!sym_is_global (abfd, syms[idx]))
2961 num_locals++;
2962 else
2963 num_globals++;
2964 }
079e9a2f
AM		 2965
2966 /* We will be adding a section symbol for each BFD section. Most normal
2967 sections will already have a section symbol in outsymbols, but
2968 eg. SHT_GROUP sections will not, and we need the section symbol mapped
2969 at least in that case. */
252b5132
RH		 2970 for (asect = abfd->sections; asect; asect = asect->next)
2971 {
079e9a2f 2972 if (sect_syms[asect->index] == NULL)
252b5132 2973 {
079e9a2f 2974 if (!sym_is_global (abfd, asect->symbol))
252b5132
RH		 2975 num_locals++;
2976 else
2977 num_globals++;
252b5132
RH		 2978 }
2979 }
2980
2981 /* Now sort the symbols so the local symbols are first. */
dc810e39
AM		 2982 amt = (num_locals + num_globals) * sizeof (asymbol *);
2983 new_syms = (asymbol **) bfd_alloc (abfd, amt);
2984
252b5132 2985 if (new_syms == NULL)
b34976b6 2986 return FALSE;
252b5132
RH		 2987
2988 for (idx = 0; idx < symcount; idx++)
2989 {
2990 asymbol *sym = syms[idx];
dc810e39 2991 unsigned int i;
252b5132
RH		 2992
2993 if (!sym_is_global (abfd, sym))
2994 i = num_locals2++;
2995 else
2996 i = num_locals + num_globals2++;
2997 new_syms[i] = sym;
2998 sym->udata.i = i + 1;
2999 }
3000 for (asect = abfd->sections; asect; asect = asect->next)
3001 {
079e9a2f 3002 if (sect_syms[asect->index] == NULL)
252b5132 3003 {
079e9a2f 3004 asymbol *sym = asect->symbol;
dc810e39 3005 unsigned int i;
252b5132 3006
079e9a2f 3007 sect_syms[asect->index] = sym;
252b5132
RH		 3008 if (!sym_is_global (abfd, sym))
3009 i = num_locals2++;
3010 else
3011 i = num_locals + num_globals2++;
3012 new_syms[i] = sym;
3013 sym->udata.i = i + 1;
3014 }
3015 }
3016
3017 bfd_set_symtab (abfd, new_syms, num_locals + num_globals);
3018
3019 elf_num_locals (abfd) = num_locals;
3020 elf_num_globals (abfd) = num_globals;
b34976b6 3021 return TRUE;
252b5132
RH		 3022}
3023
3024/* Align to the maximum file alignment that could be required for any
3025 ELF data structure. */
3026
b34976b6
AM		 3027static INLINE file_ptr align_file_position
3028 PARAMS ((file_ptr, int));
252b5132
RH		 3029static INLINE file_ptr
3030align_file_position (off, align)
3031 file_ptr off;
3032 int align;
3033{
3034 return (off + align - 1) & ~(align - 1);
3035}
3036
3037/* Assign a file position to a section, optionally aligning to the
3038 required section alignment. */
3039
3040INLINE file_ptr
3041_bfd_elf_assign_file_position_for_section (i_shdrp, offset, align)
3042 Elf_Internal_Shdr *i_shdrp;
3043 file_ptr offset;
b34976b6 3044 bfd_boolean align;
252b5132
RH		 3045{
3046 if (align)
3047 {
3048 unsigned int al;
3049
3050 al = i_shdrp->sh_addralign;
3051 if (al > 1)
3052 offset = BFD_ALIGN (offset, al);
3053 }
3054 i_shdrp->sh_offset = offset;
3055 if (i_shdrp->bfd_section != NULL)
3056 i_shdrp->bfd_section->filepos = offset;
3057 if (i_shdrp->sh_type != SHT_NOBITS)
3058 offset += i_shdrp->sh_size;
3059 return offset;
3060}
3061
3062/* Compute the file positions we are going to put the sections at, and
3063 otherwise prepare to begin writing out the ELF file. If LINK_INFO
3064 is not NULL, this is being called by the ELF backend linker. */
3065
b34976b6 3066bfd_boolean
252b5132
RH		 3067_bfd_elf_compute_section_file_positions (abfd, link_info)
3068 bfd *abfd;
3069 struct bfd_link_info *link_info;
3070{
3071 struct elf_backend_data *bed = get_elf_backend_data (abfd);
b34976b6 3072 bfd_boolean failed;
252b5132
RH		 3073 struct bfd_strtab_hash *strtab;
3074 Elf_Internal_Shdr *shstrtab_hdr;
3075
3076 if (abfd->output_has_begun)
b34976b6 3077 return TRUE;
252b5132
RH		 3078
3079 /* Do any elf backend specific processing first. */
3080 if (bed->elf_backend_begin_write_processing)
3081 (*bed->elf_backend_begin_write_processing) (abfd, link_info);
3082
3083 if (! prep_headers (abfd))
b34976b6 3084 return FALSE;
252b5132 3085
e6c51ed4
NC		 3086 /* Post process the headers if necessary. */
3087 if (bed->elf_backend_post_process_headers)
3088 (*bed->elf_backend_post_process_headers) (abfd, link_info);
3089
b34976b6 3090 failed = FALSE;
252b5132
RH		 3091 bfd_map_over_sections (abfd, elf_fake_sections, &failed);
3092 if (failed)
b34976b6 3093 return FALSE;
252b5132
RH		 3094
3095 if (!assign_section_numbers (abfd))
b34976b6 3096 return FALSE;
252b5132
RH		 3097
3098 /* The backend linker builds symbol table information itself. */
3099 if (link_info == NULL && bfd_get_symcount (abfd) > 0)
3100 {
3101 /* Non-zero if doing a relocatable link. */
3102 int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC));
3103
3104 if (! swap_out_syms (abfd, &strtab, relocatable_p))
b34976b6 3105 return FALSE;
252b5132
RH		 3106 }
3107
1126897b 3108 if (link_info == NULL)
dbb410c3 3109 {
1126897b 3110 bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed);
dbb410c3 3111 if (failed)
b34976b6 3112 return FALSE;
dbb410c3
AM		 3113 }
3114
252b5132
RH		 3115 shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr;
3116 /* sh_name was set in prep_headers. */
3117 shstrtab_hdr->sh_type = SHT_STRTAB;
3118 shstrtab_hdr->sh_flags = 0;
3119 shstrtab_hdr->sh_addr = 0;
2b0f7ef9 3120 shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd));
252b5132
RH		 3121 shstrtab_hdr->sh_entsize = 0;
3122 shstrtab_hdr->sh_link = 0;
3123 shstrtab_hdr->sh_info = 0;
3124 /* sh_offset is set in assign_file_positions_except_relocs. */
3125 shstrtab_hdr->sh_addralign = 1;
3126
3127 if (!assign_file_positions_except_relocs (abfd))
b34976b6 3128 return FALSE;
252b5132
RH		 3129
3130 if (link_info == NULL && bfd_get_symcount (abfd) > 0)
3131 {
3132 file_ptr off;
3133 Elf_Internal_Shdr *hdr;
3134
3135 off = elf_tdata (abfd)->next_file_pos;
3136
3137 hdr = &elf_tdata (abfd)->symtab_hdr;
b34976b6 3138 off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
252b5132 3139
9ad5cbcf
AM		 3140 hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
3141 if (hdr->sh_size != 0)
b34976b6 3142 off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
9ad5cbcf 3143
252b5132 3144 hdr = &elf_tdata (abfd)->strtab_hdr;
b34976b6 3145 off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
252b5132
RH		 3146
3147 elf_tdata (abfd)->next_file_pos = off;
3148
3149 /* Now that we know where the .strtab section goes, write it
3150 out. */
3151 if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
3152 || ! _bfd_stringtab_emit (abfd, strtab))
b34976b6 3153 return FALSE;
252b5132
RH		 3154 _bfd_stringtab_free (strtab);
3155 }
3156
b34976b6 3157 abfd->output_has_begun = TRUE;
252b5132 3158
b34976b6 3159 return TRUE;
252b5132
RH		 3160}
3161
3162/* Create a mapping from a set of sections to a program segment. */
3163
3164static INLINE struct elf_segment_map *
3165make_mapping (abfd, sections, from, to, phdr)
3166 bfd *abfd;
3167 asection **sections;
3168 unsigned int from;
3169 unsigned int to;
b34976b6 3170 bfd_boolean phdr;
252b5132
RH		 3171{
3172 struct elf_segment_map *m;
3173 unsigned int i;
3174 asection **hdrpp;
dc810e39 3175 bfd_size_type amt;
252b5132 3176
dc810e39
AM		 3177 amt = sizeof (struct elf_segment_map);
3178 amt += (to - from - 1) * sizeof (asection *);
3179 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
252b5132
RH		 3180 if (m == NULL)
3181 return NULL;
3182 m->next = NULL;
3183 m->p_type = PT_LOAD;
3184 for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++)
3185 m->sections[i - from] = *hdrpp;
3186 m->count = to - from;
3187
3188 if (from == 0 && phdr)
3189 {
3190 /* Include the headers in the first PT_LOAD segment. */
3191 m->includes_filehdr = 1;
3192 m->includes_phdrs = 1;
3193 }
3194
3195 return m;
3196}
3197
3198/* Set up a mapping from BFD sections to program segments. */
3199
b34976b6 3200static bfd_boolean
252b5132
RH		 3201map_sections_to_segments (abfd)
3202 bfd *abfd;
3203{
3204 asection **sections = NULL;
3205 asection *s;
3206 unsigned int i;
3207 unsigned int count;
3208 struct elf_segment_map *mfirst;
3209 struct elf_segment_map **pm;
3210 struct elf_segment_map *m;
3211 asection *last_hdr;
3212 unsigned int phdr_index;
3213 bfd_vma maxpagesize;
3214 asection **hdrpp;
b34976b6
AM		 3215 bfd_boolean phdr_in_segment = TRUE;
3216 bfd_boolean writable;
13ae64f3
JJ		 3217 int tls_count = 0;
3218 asection *first_tls = NULL;
65765700 3219 asection *dynsec, *eh_frame_hdr;
dc810e39 3220 bfd_size_type amt;
252b5132
RH		 3221
3222 if (elf_tdata (abfd)->segment_map != NULL)
b34976b6 3223 return TRUE;
252b5132
RH		 3224
3225 if (bfd_count_sections (abfd) == 0)
b34976b6 3226 return TRUE;
252b5132
RH		 3227
3228 /* Select the allocated sections, and sort them. */
3229
dc810e39
AM		 3230 amt = bfd_count_sections (abfd) * sizeof (asection *);
3231 sections = (asection **) bfd_malloc (amt);
252b5132
RH		 3232 if (sections == NULL)
3233 goto error_return;
3234
3235 i = 0;
3236 for (s = abfd->sections; s != NULL; s = s->next)
3237 {
3238 if ((s->flags & SEC_ALLOC) != 0)
3239 {
3240 sections[i] = s;
3241 ++i;
3242 }
3243 }
3244 BFD_ASSERT (i <= bfd_count_sections (abfd));
3245 count = i;
3246
3247 qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections);
3248
3249 /* Build the mapping. */
3250
3251 mfirst = NULL;
3252 pm = &mfirst;
3253
3254 /* If we have a .interp section, then create a PT_PHDR segment for
3255 the program headers and a PT_INTERP segment for the .interp
3256 section. */
3257 s = bfd_get_section_by_name (abfd, ".interp");
3258 if (s != NULL && (s->flags & SEC_LOAD) != 0)
3259 {
dc810e39
AM		 3260 amt = sizeof (struct elf_segment_map);
3261 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
252b5132
RH		 3262 if (m == NULL)
3263 goto error_return;
3264 m->next = NULL;
3265 m->p_type = PT_PHDR;
3266 /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */
3267 m->p_flags = PF_R | PF_X;
3268 m->p_flags_valid = 1;
3269 m->includes_phdrs = 1;
3270
3271 *pm = m;
3272 pm = &m->next;
3273
dc810e39
AM		 3274 amt = sizeof (struct elf_segment_map);
3275 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
252b5132
RH		 3276 if (m == NULL)
3277 goto error_return;
3278 m->next = NULL;
3279 m->p_type = PT_INTERP;
3280 m->count = 1;
3281 m->sections[0] = s;
3282
3283 *pm = m;
3284 pm = &m->next;
3285 }
3286
3287 /* Look through the sections. We put sections in the same program
3288 segment when the start of the second section can be placed within
3289 a few bytes of the end of the first section. */
3290 last_hdr = NULL;
3291 phdr_index = 0;
3292 maxpagesize = get_elf_backend_data (abfd)->maxpagesize;
b34976b6 3293 writable = FALSE;
252b5132
RH		 3294 dynsec = bfd_get_section_by_name (abfd, ".dynamic");
3295 if (dynsec != NULL
3296 && (dynsec->flags & SEC_LOAD) == 0)
3297 dynsec = NULL;
3298
3299 /* Deal with -Ttext or something similar such that the first section
3300 is not adjacent to the program headers. This is an
3301 approximation, since at this point we don't know exactly how many
3302 program headers we will need. */
3303 if (count > 0)
3304 {
3305 bfd_size_type phdr_size;
3306
3307 phdr_size = elf_tdata (abfd)->program_header_size;
3308 if (phdr_size == 0)
3309 phdr_size = get_elf_backend_data (abfd)->s->sizeof_phdr;
3310 if ((abfd->flags & D_PAGED) == 0
3311 || sections[0]->lma < phdr_size
3312 || sections[0]->lma % maxpagesize < phdr_size % maxpagesize)
b34976b6 3313 phdr_in_segment = FALSE;
252b5132
RH		 3314 }
3315
3316 for (i = 0, hdrpp = sections; i < count; i++, hdrpp++)
3317 {
3318 asection *hdr;
b34976b6 3319 bfd_boolean new_segment;
252b5132
RH		 3320
3321 hdr = *hdrpp;
3322
3323 /* See if this section and the last one will fit in the same
3324 segment. */
3325
3326 if (last_hdr == NULL)
3327 {
3328 /* If we don't have a segment yet, then we don't need a new
3329 one (we build the last one after this loop). */
b34976b6 3330 new_segment = FALSE;
252b5132
RH		 3331 }
3332 else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma)
3333 {
3334 /* If this section has a different relation between the
3335 virtual address and the load address, then we need a new
3336 segment. */
b34976b6 3337 new_segment = TRUE;
252b5132
RH		 3338 }
3339 else if (BFD_ALIGN (last_hdr->lma + last_hdr->_raw_size, maxpagesize)
3340 < BFD_ALIGN (hdr->lma, maxpagesize))
3341 {
3342 /* If putting this section in this segment would force us to
3343 skip a page in the segment, then we need a new segment. */
b34976b6 3344 new_segment = TRUE;
252b5132
RH		 3345 }
3346 else if ((last_hdr->flags & SEC_LOAD) == 0
3347 && (hdr->flags & SEC_LOAD) != 0)
3348 {
3349 /* We don't want to put a loadable section after a
3350 nonloadable section in the same segment. */
b34976b6 3351 new_segment = TRUE;
252b5132
RH		 3352 }
3353 else if ((abfd->flags & D_PAGED) == 0)
3354 {
3355 /* If the file is not demand paged, which means that we
3356 don't require the sections to be correctly aligned in the
3357 file, then there is no other reason for a new segment. */
b34976b6 3358 new_segment = FALSE;
252b5132
RH		 3359 }
3360 else if (! writable
3361 && (hdr->flags & SEC_READONLY) == 0
b89fe0ee
AM		 3362 && (((last_hdr->lma + last_hdr->_raw_size - 1)
3363 & ~(maxpagesize - 1))
3364 != (hdr->lma & ~(maxpagesize - 1))))
252b5132
RH		 3365 {
3366 /* We don't want to put a writable section in a read only
3367 segment, unless they are on the same page in memory
3368 anyhow. We already know that the last section does not
3369 bring us past the current section on the page, so the
3370 only case in which the new section is not on the same
3371 page as the previous section is when the previous section
3372 ends precisely on a page boundary. */
b34976b6 3373 new_segment = TRUE;
252b5132
RH		 3374 }
3375 else
3376 {
3377 /* Otherwise, we can use the same segment. */
b34976b6 3378 new_segment = FALSE;
252b5132
RH		 3379 }
3380
3381 if (! new_segment)
3382 {
3383 if ((hdr->flags & SEC_READONLY) == 0)
b34976b6 3384 writable = TRUE;
252b5132
RH		 3385 last_hdr = hdr;
3386 continue;
3387 }
3388
3389 /* We need a new program segment. We must create a new program
3390 header holding all the sections from phdr_index until hdr. */
3391
3392 m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment);
3393 if (m == NULL)
3394 goto error_return;
3395
3396 *pm = m;
3397 pm = &m->next;
3398
3399 if ((hdr->flags & SEC_READONLY) == 0)
b34976b6 3400 writable = TRUE;
252b5132 3401 else
b34976b6 3402 writable = FALSE;
252b5132
RH		 3403
3404 last_hdr = hdr;
3405 phdr_index = i;
b34976b6 3406 phdr_in_segment = FALSE;
252b5132
RH		 3407 }
3408
3409 /* Create a final PT_LOAD program segment. */
3410 if (last_hdr != NULL)
3411 {
3412 m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment);
3413 if (m == NULL)
3414 goto error_return;
3415
3416 *pm = m;
3417 pm = &m->next;
3418 }
3419
3420 /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */
3421 if (dynsec != NULL)
3422 {
dc810e39
AM		 3423 amt = sizeof (struct elf_segment_map);
3424 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
252b5132
RH		 3425 if (m == NULL)
3426 goto error_return;
3427 m->next = NULL;
3428 m->p_type = PT_DYNAMIC;
3429 m->count = 1;
3430 m->sections[0] = dynsec;
3431
3432 *pm = m;
3433 pm = &m->next;
3434 }
3435
3436 /* For each loadable .note section, add a PT_NOTE segment. We don't
3437 use bfd_get_section_by_name, because if we link together
3438 nonloadable .note sections and loadable .note sections, we will
3439 generate two .note sections in the output file. FIXME: Using
3440 names for section types is bogus anyhow. */
3441 for (s = abfd->sections; s != NULL; s = s->next)
3442 {
3443 if ((s->flags & SEC_LOAD) != 0
3444 && strncmp (s->name, ".note", 5) == 0)
3445 {
dc810e39
AM		 3446 amt = sizeof (struct elf_segment_map);
3447 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
252b5132
RH		 3448 if (m == NULL)
3449 goto error_return;
3450 m->next = NULL;
3451 m->p_type = PT_NOTE;
3452 m->count = 1;
3453 m->sections[0] = s;
3454
3455 *pm = m;
3456 pm = &m->next;
3457 }
13ae64f3
JJ		 3458 if (s->flags & SEC_THREAD_LOCAL)
3459 {
3460 if (! tls_count)
3461 first_tls = s;
3462 tls_count++;
3463 }
3464 }
3465
3466 /* If there are any SHF_TLS output sections, add PT_TLS segment. */
3467 if (tls_count > 0)
3468 {
3469 int i;
3470
3471 amt = sizeof (struct elf_segment_map);
3472 amt += (tls_count - 1) * sizeof (asection *);
3473 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
3474 if (m == NULL)
3475 goto error_return;
3476 m->next = NULL;
3477 m->p_type = PT_TLS;
3478 m->count = tls_count;
3479 /* Mandated PF_R. */
3480 m->p_flags = PF_R;
3481 m->p_flags_valid = 1;
3482 for (i = 0; i < tls_count; ++i)
3483 {
3484 BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL);
3485 m->sections[i] = first_tls;
3486 first_tls = first_tls->next;
3487 }
3488
3489 *pm = m;
3490 pm = &m->next;
252b5132
RH		 3491 }
3492
65765700
JJ		 3493 /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME
3494 segment. */
126495ed
AM		 3495 eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr;
3496 if (eh_frame_hdr != NULL
3497 && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0)
65765700
JJ		 3498 {
3499 amt = sizeof (struct elf_segment_map);
3500 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
3501 if (m == NULL)
3502 goto error_return;
3503 m->next = NULL;
3504 m->p_type = PT_GNU_EH_FRAME;
3505 m->count = 1;
126495ed 3506 m->sections[0] = eh_frame_hdr->output_section;
65765700
JJ		 3507
3508 *pm = m;
3509 pm = &m->next;
3510 }
3511
252b5132
RH		 3512 free (sections);
3513 sections = NULL;
3514
3515 elf_tdata (abfd)->segment_map = mfirst;
b34976b6 3516 return TRUE;
252b5132
RH		 3517
3518 error_return:
3519 if (sections != NULL)
3520 free (sections);
b34976b6 3521 return FALSE;
252b5132
RH		 3522}
3523
3524/* Sort sections by address. */
3525
3526static int
3527elf_sort_sections (arg1, arg2)
3528 const PTR arg1;
3529 const PTR arg2;
3530{
3531 const asection *sec1 = *(const asection **) arg1;
3532 const asection *sec2 = *(const asection **) arg2;
eecdbe52 3533 bfd_size_type size1, size2;
252b5132
RH		 3534
3535 /* Sort by LMA first, since this is the address used to
3536 place the section into a segment. */
3537 if (sec1->lma < sec2->lma)
3538 return -1;
3539 else if (sec1->lma > sec2->lma)
3540 return 1;
3541
3542 /* Then sort by VMA. Normally the LMA and the VMA will be
3543 the same, and this will do nothing. */
3544 if (sec1->vma < sec2->vma)
3545 return -1;
3546 else if (sec1->vma > sec2->vma)
3547 return 1;
3548
3549 /* Put !SEC_LOAD sections after SEC_LOAD ones. */
3550
07c6e936 3551#define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0)
252b5132
RH		 3552
3553 if (TOEND (sec1))
3554 {
3555 if (TOEND (sec2))
00a7cdc5
NC		 3556 {
3557 /* If the indicies are the same, do not return 0
3558 here, but continue to try the next comparison. */
3559 if (sec1->target_index - sec2->target_index != 0)
3560 return sec1->target_index - sec2->target_index;
3561 }
252b5132
RH		 3562 else
3563 return 1;
3564 }
00a7cdc5 3565 else if (TOEND (sec2))
252b5132
RH		 3566 return -1;
3567
3568#undef TOEND
3569
00a7cdc5
NC		 3570 /* Sort by size, to put zero sized sections
3571 before others at the same address. */
252b5132 3572
eecdbe52
JJ		 3573 size1 = (sec1->flags & SEC_LOAD) ? sec1->_raw_size : 0;
3574 size2 = (sec2->flags & SEC_LOAD) ? sec2->_raw_size : 0;
3575
3576 if (size1 < size2)
252b5132 3577 return -1;
eecdbe52 3578 if (size1 > size2)
252b5132
RH		 3579 return 1;
3580
3581 return sec1->target_index - sec2->target_index;
3582}
3583
3584/* Assign file positions to the sections based on the mapping from
3585 sections to segments. This function also sets up some fields in
3586 the file header, and writes out the program headers. */
3587
b34976b6 3588static bfd_boolean
252b5132
RH		 3589assign_file_positions_for_segments (abfd)
3590 bfd *abfd;
3591{
3592 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3593 unsigned int count;
3594 struct elf_segment_map *m;
3595 unsigned int alloc;
3596 Elf_Internal_Phdr *phdrs;
3597 file_ptr off, voff;
3598 bfd_vma filehdr_vaddr, filehdr_paddr;
3599 bfd_vma phdrs_vaddr, phdrs_paddr;
3600 Elf_Internal_Phdr *p;
dc810e39 3601 bfd_size_type amt;
252b5132
RH		 3602
3603 if (elf_tdata (abfd)->segment_map == NULL)
3604 {
3605 if (! map_sections_to_segments (abfd))
b34976b6 3606 return FALSE;
252b5132 3607 }
1ed89aa9
NC		 3608 else
3609 {
3610 /* The placement algorithm assumes that non allocated sections are
3611 not in PT_LOAD segments. We ensure this here by removing such
3612 sections from the segment map. */
3613 for (m = elf_tdata (abfd)->segment_map;
3614 m != NULL;
3615 m = m->next)
3616 {
3617 unsigned int new_count;
3618 unsigned int i;
3619
3620 if (m->p_type != PT_LOAD)
3621 continue;
3622
3623 new_count = 0;
3624 for (i = 0; i < m->count; i ++)
3625 {
3626 if ((m->sections[i]->flags & SEC_ALLOC) != 0)
3627 {
47d9a591 3628 if (i != new_count)
1ed89aa9
NC		 3629 m->sections[new_count] = m->sections[i];
3630
3631 new_count ++;
3632 }
3633 }
3634
3635 if (new_count != m->count)
3636 m->count = new_count;
3637 }
3638 }
252b5132
RH		 3639
3640 if (bed->elf_backend_modify_segment_map)
3641 {
3642 if (! (*bed->elf_backend_modify_segment_map) (abfd))
b34976b6 3643 return FALSE;
252b5132
RH		 3644 }
3645
3646 count = 0;
3647 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
3648 ++count;
3649
3650 elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr;
3651 elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr;
3652 elf_elfheader (abfd)->e_phnum = count;
3653
3654 if (count == 0)
b34976b6 3655 return TRUE;
252b5132
RH		 3656
3657 /* If we already counted the number of program segments, make sure
3658 that we allocated enough space. This happens when SIZEOF_HEADERS
3659 is used in a linker script. */
3660 alloc = elf_tdata (abfd)->program_header_size / bed->s->sizeof_phdr;
3661 if (alloc != 0 && count > alloc)
3662 {
3663 ((*_bfd_error_handler)
3664 (_("%s: Not enough room for program headers (allocated %u, need %u)"),
3665 bfd_get_filename (abfd), alloc, count));
3666 bfd_set_error (bfd_error_bad_value);
b34976b6 3667 return FALSE;
252b5132
RH		 3668 }
3669
3670 if (alloc == 0)
3671 alloc = count;
3672
dc810e39
AM		 3673 amt = alloc * sizeof (Elf_Internal_Phdr);
3674 phdrs = (Elf_Internal_Phdr *) bfd_alloc (abfd, amt);
252b5132 3675 if (phdrs == NULL)
b34976b6 3676 return FALSE;
252b5132
RH		 3677
3678 off = bed->s->sizeof_ehdr;
3679 off += alloc * bed->s->sizeof_phdr;
3680
3681 filehdr_vaddr = 0;
3682 filehdr_paddr = 0;
3683 phdrs_vaddr = 0;
3684 phdrs_paddr = 0;
3685
3686 for (m = elf_tdata (abfd)->segment_map, p = phdrs;
3687 m != NULL;
3688 m = m->next, p++)
3689 {
3690 unsigned int i;
3691 asection **secpp;
3692
3693 /* If elf_segment_map is not from map_sections_to_segments, the
47d9a591 3694 sections may not be correctly ordered. NOTE: sorting should
52e9b619
MS		 3695 not be done to the PT_NOTE section of a corefile, which may
3696 contain several pseudo-sections artificially created by bfd.
3697 Sorting these pseudo-sections breaks things badly. */
47d9a591
AM		 3698 if (m->count > 1
3699 && !(elf_elfheader (abfd)->e_type == ET_CORE
52e9b619 3700 && m->p_type == PT_NOTE))
252b5132
RH		 3701 qsort (m->sections, (size_t) m->count, sizeof (asection *),
3702 elf_sort_sections);
3703
3704 p->p_type = m->p_type;
28a7f3e7 3705 p->p_flags = m->p_flags;
252b5132
RH		 3706
3707 if (p->p_type == PT_LOAD
3708 && m->count > 0
3709 && (m->sections[0]->flags & SEC_ALLOC) != 0)
3710 {
3711 if ((abfd->flags & D_PAGED) != 0)
3712 off += (m->sections[0]->vma - off) % bed->maxpagesize;
3713 else
3714 {
3715 bfd_size_type align;
3716
3717 align = 0;
3718 for (i = 0, secpp = m->sections; i < m->count; i++, secpp++)
3719 {
3720 bfd_size_type secalign;
3721
3722 secalign = bfd_get_section_alignment (abfd, *secpp);
3723 if (secalign > align)
3724 align = secalign;
3725 }
3726
3727 off += (m->sections[0]->vma - off) % (1 << align);
3728 }
3729 }
3730
3731 if (m->count == 0)
3732 p->p_vaddr = 0;
3733 else
3734 p->p_vaddr = m->sections[0]->vma;
3735
3736 if (m->p_paddr_valid)
3737 p->p_paddr = m->p_paddr;
3738 else if (m->count == 0)
3739 p->p_paddr = 0;
3740 else
3741 p->p_paddr = m->sections[0]->lma;
3742
3743 if (p->p_type == PT_LOAD
3744 && (abfd->flags & D_PAGED) != 0)
3745 p->p_align = bed->maxpagesize;
3746 else if (m->count == 0)
3747 p->p_align = bed->s->file_align;
3748 else
3749 p->p_align = 0;
3750
3751 p->p_offset = 0;
3752 p->p_filesz = 0;
3753 p->p_memsz = 0;
3754
3755 if (m->includes_filehdr)
3756 {
3757 if (! m->p_flags_valid)
3758 p->p_flags |= PF_R;
3759 p->p_offset = 0;
3760 p->p_filesz = bed->s->sizeof_ehdr;
3761 p->p_memsz = bed->s->sizeof_ehdr;
3762 if (m->count > 0)
3763 {
3764 BFD_ASSERT (p->p_type == PT_LOAD);
3765
3766 if (p->p_vaddr < (bfd_vma) off)
3767 {
caf47ea6
AM		 3768 (*_bfd_error_handler)
3769 (_("%s: Not enough room for program headers, try linking with -N"),
3770 bfd_get_filename (abfd));
252b5132 3771 bfd_set_error (bfd_error_bad_value);
b34976b6 3772 return FALSE;
252b5132
RH		 3773 }
3774
3775 p->p_vaddr -= off;
3776 if (! m->p_paddr_valid)
3777 p->p_paddr -= off;
3778 }
3779 if (p->p_type == PT_LOAD)
3780 {
3781 filehdr_vaddr = p->p_vaddr;
3782 filehdr_paddr = p->p_paddr;
3783 }
3784 }
3785
3786 if (m->includes_phdrs)
3787 {
3788 if (! m->p_flags_valid)
3789 p->p_flags |= PF_R;
3790
3791 if (m->includes_filehdr)
3792 {
3793 if (p->p_type == PT_LOAD)
3794 {
3795 phdrs_vaddr = p->p_vaddr + bed->s->sizeof_ehdr;
3796 phdrs_paddr = p->p_paddr + bed->s->sizeof_ehdr;
3797 }
3798 }
3799 else
3800 {
3801 p->p_offset = bed->s->sizeof_ehdr;
3802
3803 if (m->count > 0)
3804 {
3805 BFD_ASSERT (p->p_type == PT_LOAD);
3806 p->p_vaddr -= off - p->p_offset;
3807 if (! m->p_paddr_valid)
3808 p->p_paddr -= off - p->p_offset;
3809 }
3810
3811 if (p->p_type == PT_LOAD)
3812 {
3813 phdrs_vaddr = p->p_vaddr;
3814 phdrs_paddr = p->p_paddr;
3815 }
3816 else
3817 phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr;
3818 }
3819
3820 p->p_filesz += alloc * bed->s->sizeof_phdr;
3821 p->p_memsz += alloc * bed->s->sizeof_phdr;
3822 }
3823
3824 if (p->p_type == PT_LOAD
3825 || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core))
3826 {
3827 if (! m->includes_filehdr && ! m->includes_phdrs)
3828 p->p_offset = off;
3829 else
3830 {
3831 file_ptr adjust;
3832
3833 adjust = off - (p->p_offset + p->p_filesz);
3834 p->p_filesz += adjust;
3835 p->p_memsz += adjust;
3836 }
3837 }
3838
3839 voff = off;
3840
3841 for (i = 0, secpp = m->sections; i < m->count; i++, secpp++)
3842 {
3843 asection *sec;
3844 flagword flags;
3845 bfd_size_type align;
3846
3847 sec = *secpp;
3848 flags = sec->flags;
3849 align = 1 << bfd_get_section_alignment (abfd, sec);
3850
3851 /* The section may have artificial alignment forced by a
3852 link script. Notice this case by the gap between the
f5ffc919
NC		 3853 cumulative phdr lma and the section's lma. */
3854 if (p->p_paddr + p->p_memsz < sec->lma)
252b5132 3855 {
f5ffc919 3856 bfd_vma adjust = sec->lma - (p->p_paddr + p->p_memsz);
252b5132
RH		 3857
3858 p->p_memsz += adjust;
eecdbe52
JJ		 3859 if (p->p_type == PT_LOAD
3860 || (p->p_type == PT_NOTE
3861 && bfd_get_format (abfd) == bfd_core))
3862 {
3863 off += adjust;
3864 voff += adjust;
3865 }
3866 if ((flags & SEC_LOAD) != 0
3867 || (flags & SEC_THREAD_LOCAL) != 0)
252b5132
RH		 3868 p->p_filesz += adjust;
3869 }
3870
3871 if (p->p_type == PT_LOAD)
3872 {
3873 bfd_signed_vma adjust;
3874
3875 if ((flags & SEC_LOAD) != 0)
3876 {
3877 adjust = sec->lma - (p->p_paddr + p->p_memsz);
3878 if (adjust < 0)
3879 adjust = 0;
3880 }
3881 else if ((flags & SEC_ALLOC) != 0)
3882 {
3883 /* The section VMA must equal the file position
3884 modulo the page size. FIXME: I'm not sure if
3885 this adjustment is really necessary. We used to
3886 not have the SEC_LOAD case just above, and then
3887 this was necessary, but now I'm not sure. */
3888 if ((abfd->flags & D_PAGED) != 0)
3889 adjust = (sec->vma - voff) % bed->maxpagesize;
3890 else
3891 adjust = (sec->vma - voff) % align;
3892 }
3893 else
3894 adjust = 0;
3895
3896 if (adjust != 0)
3897 {
3898 if (i == 0)
3899 {
cdc7c09f
NC		 3900 (* _bfd_error_handler) (_("\
3901Error: First section in segment (%s) starts at 0x%x whereas the segment starts at 0x%x"),
3902 bfd_section_name (abfd, sec),
3903 sec->lma,
3904 p->p_paddr);
b34976b6 3905 return FALSE;
252b5132
RH		 3906 }
3907 p->p_memsz += adjust;
3908 off += adjust;
3909 voff += adjust;
3910 if ((flags & SEC_LOAD) != 0)
3911 p->p_filesz += adjust;
3912 }
3913
3914 sec->filepos = off;
3915
3916 /* We check SEC_HAS_CONTENTS here because if NOLOAD is
3917 used in a linker script we may have a section with
3918 SEC_LOAD clear but which is supposed to have
3919 contents. */
3920 if ((flags & SEC_LOAD) != 0
3921 || (flags & SEC_HAS_CONTENTS) != 0)
3922 off += sec->_raw_size;
3923
eecdbe52
JJ		 3924 if ((flags & SEC_ALLOC) != 0
3925 && ((flags & SEC_LOAD) != 0
3926 || (flags & SEC_THREAD_LOCAL) == 0))
252b5132
RH		 3927 voff += sec->_raw_size;
3928 }
3929
3930 if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)
3931 {
4a938328
MS		 3932 /* The actual "note" segment has i == 0.
3933 This is the one that actually contains everything. */
3934 if (i == 0)
3935 {
252b5132
RH		 3936 sec->filepos = off;
3937 p->p_filesz = sec->_raw_size;
3938 off += sec->_raw_size;
3939 voff = off;
3940 }
4a938328 3941 else
252b5132 3942 {
4a938328 3943 /* Fake sections -- don't need to be written. */
252b5132
RH		 3944 sec->filepos = 0;
3945 sec->_raw_size = 0;
4a938328 3946 flags = sec->flags = 0;
252b5132
RH		 3947 }
3948 p->p_memsz = 0;
3949 p->p_align = 1;
3950 }
3951 else
3952 {
eecdbe52
JJ		 3953 if ((sec->flags & SEC_LOAD) != 0
3954 || (sec->flags & SEC_THREAD_LOCAL) == 0
3955 || p->p_type == PT_TLS)
252b5132
RH		 3956 p->p_memsz += sec->_raw_size;
3957
3958 if ((flags & SEC_LOAD) != 0)
3959 p->p_filesz += sec->_raw_size;
3960
13ae64f3
JJ		 3961 if (p->p_type == PT_TLS
3962 && sec->_raw_size == 0
3963 && (sec->flags & SEC_HAS_CONTENTS) == 0)
3964 {
3965 struct bfd_link_order *o;
3966 bfd_vma tbss_size = 0;
3967
3968 for (o = sec->link_order_head; o != NULL; o = o->next)
3969 if (tbss_size < o->offset + o->size)
3970 tbss_size = o->offset + o->size;
3971
3972 p->p_memsz += tbss_size;
3973 }
3974
252b5132
RH		 3975 if (align > p->p_align
3976 && (p->p_type != PT_LOAD || (abfd->flags & D_PAGED) == 0))
3977 p->p_align = align;
3978 }
3979
3980 if (! m->p_flags_valid)
3981 {
3982 p->p_flags |= PF_R;
3983 if ((flags & SEC_CODE) != 0)
3984 p->p_flags |= PF_X;
3985 if ((flags & SEC_READONLY) == 0)
3986 p->p_flags |= PF_W;
3987 }
3988 }
3989 }
3990
3991 /* Now that we have set the section file positions, we can set up
3992 the file positions for the non PT_LOAD segments. */
3993 for (m = elf_tdata (abfd)->segment_map, p = phdrs;
3994 m != NULL;
3995 m = m->next, p++)
3996 {
3997 if (p->p_type != PT_LOAD && m->count > 0)
3998 {
3999 BFD_ASSERT (! m->includes_filehdr && ! m->includes_phdrs);
4000 p->p_offset = m->sections[0]->filepos;
4001 }
4002 if (m->count == 0)
4003 {
4004 if (m->includes_filehdr)
4005 {
4006 p->p_vaddr = filehdr_vaddr;
4007 if (! m->p_paddr_valid)
4008 p->p_paddr = filehdr_paddr;
4009 }
4010 else if (m->includes_phdrs)
4011 {
4012 p->p_vaddr = phdrs_vaddr;
4013 if (! m->p_paddr_valid)
4014 p->p_paddr = phdrs_paddr;
4015 }
4016 }
4017 }
4018
4019 /* Clear out any program headers we allocated but did not use. */
4020 for (; count < alloc; count++, p++)
4021 {
4022 memset (p, 0, sizeof *p);
4023 p->p_type = PT_NULL;
4024 }
4025
4026 elf_tdata (abfd)->phdr = phdrs;
4027
4028 elf_tdata (abfd)->next_file_pos = off;
4029
4030 /* Write out the program headers. */
dc810e39 4031 if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0
252b5132 4032 || bed->s->write_out_phdrs (abfd, phdrs, alloc) != 0)
b34976b6 4033 return FALSE;
252b5132 4034
b34976b6 4035 return TRUE;
252b5132
RH		 4036}
4037
4038/* Get the size of the program header.
4039
4040 If this is called by the linker before any of the section VMA's are set, it
4041 can't calculate the correct value for a strange memory layout. This only
4042 happens when SIZEOF_HEADERS is used in a linker script. In this case,
4043 SORTED_HDRS is NULL and we assume the normal scenario of one text and one
4044 data segment (exclusive of .interp and .dynamic).
4045
4046 ??? User written scripts must either not use SIZEOF_HEADERS, or assume there
4047 will be two segments. */
4048
4049static bfd_size_type
4050get_program_header_size (abfd)
4051 bfd *abfd;
4052{
4053 size_t segs;
4054 asection *s;
4055 struct elf_backend_data *bed = get_elf_backend_data (abfd);
4056
4057 /* We can't return a different result each time we're called. */
4058 if (elf_tdata (abfd)->program_header_size != 0)
4059 return elf_tdata (abfd)->program_header_size;
4060
4061 if (elf_tdata (abfd)->segment_map != NULL)
4062 {
4063 struct elf_segment_map *m;
4064
4065 segs = 0;
4066 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
4067 ++segs;
4068 elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr;
4069 return elf_tdata (abfd)->program_header_size;
4070 }
4071
4072 /* Assume we will need exactly two PT_LOAD segments: one for text
4073 and one for data. */
4074 segs = 2;
4075
4076 s = bfd_get_section_by_name (abfd, ".interp");
4077 if (s != NULL && (s->flags & SEC_LOAD) != 0)
4078 {
4079 /* If we have a loadable interpreter section, we need a
4080 PT_INTERP segment. In this case, assume we also need a
ab3acfbe 4081 PT_PHDR segment, although that may not be true for all
252b5132
RH		 4082 targets. */
4083 segs += 2;
4084 }
4085
4086 if (bfd_get_section_by_name (abfd, ".dynamic") != NULL)
4087 {
4088 /* We need a PT_DYNAMIC segment. */
4089 ++segs;
4090 }
4091
126495ed 4092 if (elf_tdata (abfd)->eh_frame_hdr)
65765700
JJ		 4093 {
4094 /* We need a PT_GNU_EH_FRAME segment. */
4095 ++segs;
4096 }
4097
252b5132
RH		 4098 for (s = abfd->sections; s != NULL; s = s->next)
4099 {
4100 if ((s->flags & SEC_LOAD) != 0
4101 && strncmp (s->name, ".note", 5) == 0)
4102 {
4103 /* We need a PT_NOTE segment. */
4104 ++segs;
4105 }
4106 }
4107
13ae64f3
JJ		 4108 for (s = abfd->sections; s != NULL; s = s->next)
4109 {
4110 if (s->flags & SEC_THREAD_LOCAL)
4111 {
4112 /* We need a PT_TLS segment. */
4113 ++segs;
4114 break;
4115 }
4116 }
4117
252b5132
RH		 4118 /* Let the backend count up any program headers it might need. */
4119 if (bed->elf_backend_additional_program_headers)
4120 {
4121 int a;
4122
4123 a = (*bed->elf_backend_additional_program_headers) (abfd);
4124 if (a == -1)
4125 abort ();
4126 segs += a;
4127 }
4128
4129 elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr;
4130 return elf_tdata (abfd)->program_header_size;
4131}
4132
4133/* Work out the file positions of all the sections. This is called by
4134 _bfd_elf_compute_section_file_positions. All the section sizes and
4135 VMAs must be known before this is called.
4136
4137 We do not consider reloc sections at this point, unless they form
4138 part of the loadable image. Reloc sections are assigned file
4139 positions in assign_file_positions_for_relocs, which is called by
4140 write_object_contents and final_link.
4141
4142 We also don't set the positions of the .symtab and .strtab here. */
4143
b34976b6 4144static bfd_boolean
252b5132
RH		 4145assign_file_positions_except_relocs (abfd)
4146 bfd *abfd;
4147{
4148 struct elf_obj_tdata * const tdata = elf_tdata (abfd);
4149 Elf_Internal_Ehdr * const i_ehdrp = elf_elfheader (abfd);
4150 Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd);
9ad5cbcf 4151 unsigned int num_sec = elf_numsections (abfd);
252b5132
RH		 4152 file_ptr off;
4153 struct elf_backend_data *bed = get_elf_backend_data (abfd);
4154
4155 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0
4156 && bfd_get_format (abfd) != bfd_core)
4157 {
4158 Elf_Internal_Shdr **hdrpp;
4159 unsigned int i;
4160
4161 /* Start after the ELF header. */
4162 off = i_ehdrp->e_ehsize;
4163
4164 /* We are not creating an executable, which means that we are
4165 not creating a program header, and that the actual order of
4166 the sections in the file is unimportant. */
9ad5cbcf 4167 for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++)
252b5132
RH		 4168 {
4169 Elf_Internal_Shdr *hdr;
4170
4171 hdr = *hdrpp;
9ad5cbcf
AM		 4172 if (hdr->sh_type == SHT_REL
4173 || hdr->sh_type == SHT_RELA
4174 || i == tdata->symtab_section
4175 || i == tdata->symtab_shndx_section
252b5132
RH		 4176 || i == tdata->strtab_section)
4177 {
4178 hdr->sh_offset = -1;
252b5132 4179 }
9ad5cbcf 4180 else
b34976b6 4181 off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
252b5132 4182
9ad5cbcf
AM		 4183 if (i == SHN_LORESERVE - 1)
4184 {
4185 i += SHN_HIRESERVE + 1 - SHN_LORESERVE;
4186 hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE;
4187 }
252b5132
RH		 4188 }
4189 }
4190 else
4191 {
4192 unsigned int i;
4193 Elf_Internal_Shdr **hdrpp;
4194
4195 /* Assign file positions for the loaded sections based on the
4196 assignment of sections to segments. */
4197 if (! assign_file_positions_for_segments (abfd))
b34976b6 4198 return FALSE;
252b5132
RH		 4199
4200 /* Assign file positions for the other sections. */
4201
4202 off = elf_tdata (abfd)->next_file_pos;
9ad5cbcf 4203 for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++)
252b5132
RH		 4204 {
4205 Elf_Internal_Shdr *hdr;
4206
4207 hdr = *hdrpp;
4208 if (hdr->bfd_section != NULL
4209 && hdr->bfd_section->filepos != 0)
4210 hdr->sh_offset = hdr->bfd_section->filepos;
4211 else if ((hdr->sh_flags & SHF_ALLOC) != 0)
4212 {
4213 ((*_bfd_error_handler)
4214 (_("%s: warning: allocated section `%s' not in segment"),
4215 bfd_get_filename (abfd),
4216 (hdr->bfd_section == NULL
4217 ? "*unknown*"
4218 : hdr->bfd_section->name)));
4219 if ((abfd->flags & D_PAGED) != 0)
4220 off += (hdr->sh_addr - off) % bed->maxpagesize;
4221 else
4222 off += (hdr->sh_addr - off) % hdr->sh_addralign;
4223 off = _bfd_elf_assign_file_position_for_section (hdr, off,
b34976b6 4224 FALSE);
252b5132
RH		 4225 }
4226 else if (hdr->sh_type == SHT_REL
4227 || hdr->sh_type == SHT_RELA
4228 || hdr == i_shdrpp[tdata->symtab_section]
9ad5cbcf 4229 || hdr == i_shdrpp[tdata->symtab_shndx_section]
252b5132
RH		 4230 || hdr == i_shdrpp[tdata->strtab_section])
4231 hdr->sh_offset = -1;
4232 else
b34976b6 4233 off = _bfd_elf_assign_file_position_for_section (hdr, off, TRUE);
9ad5cbcf
AM		 4234
4235 if (i == SHN_LORESERVE - 1)
4236 {
4237 i += SHN_HIRESERVE + 1 - SHN_LORESERVE;
4238 hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE;
4239 }
252b5132
RH		 4240 }
4241 }
4242
4243 /* Place the section headers. */
4244 off = align_file_position (off, bed->s->file_align);
4245 i_ehdrp->e_shoff = off;
4246 off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize;
4247
4248 elf_tdata (abfd)->next_file_pos = off;
4249
b34976b6 4250 return TRUE;
252b5132
RH		 4251}
4252
b34976b6 4253static bfd_boolean
252b5132
RH		 4254prep_headers (abfd)
4255 bfd *abfd;
4256{
4257 Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
4258 Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */
4259 Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */
2b0f7ef9 4260 struct elf_strtab_hash *shstrtab;
252b5132
RH		 4261 struct elf_backend_data *bed = get_elf_backend_data (abfd);
4262
4263 i_ehdrp = elf_elfheader (abfd);
4264 i_shdrp = elf_elfsections (abfd);
4265
2b0f7ef9 4266 shstrtab = _bfd_elf_strtab_init ();
252b5132 4267 if (shstrtab == NULL)
b34976b6 4268 return FALSE;
252b5132
RH		 4269
4270 elf_shstrtab (abfd) = shstrtab;
4271
4272 i_ehdrp->e_ident[EI_MAG0] = ELFMAG0;
4273 i_ehdrp->e_ident[EI_MAG1] = ELFMAG1;
4274 i_ehdrp->e_ident[EI_MAG2] = ELFMAG2;
4275 i_ehdrp->e_ident[EI_MAG3] = ELFMAG3;
4276
4277 i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass;
4278 i_ehdrp->e_ident[EI_DATA] =
4279 bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB;
4280 i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current;
4281
252b5132
RH		 4282 if ((abfd->flags & DYNAMIC) != 0)
4283 i_ehdrp->e_type = ET_DYN;
4284 else if ((abfd->flags & EXEC_P) != 0)
4285 i_ehdrp->e_type = ET_EXEC;
4286 else if (bfd_get_format (abfd) == bfd_core)
4287 i_ehdrp->e_type = ET_CORE;
4288 else
4289 i_ehdrp->e_type = ET_REL;
4290
4291 switch (bfd_get_arch (abfd))
4292 {
4293 case bfd_arch_unknown:
4294 i_ehdrp->e_machine = EM_NONE;
4295 break;
aa4f99bb
AO		 4296
4297 /* There used to be a long list of cases here, each one setting
4298 e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE
4299 in the corresponding bfd definition. To avoid duplication,
4300 the switch was removed. Machines that need special handling
4301 can generally do it in elf_backend_final_write_processing(),
4302 unless they need the information earlier than the final write.
4303 Such need can generally be supplied by replacing the tests for
4304 e_machine with the conditions used to determine it. */
252b5132 4305 default:
aa4f99bb
AO		 4306 if (get_elf_backend_data (abfd) != NULL)
4307 i_ehdrp->e_machine = get_elf_backend_data (abfd)->elf_machine_code;
4308 else
4309 i_ehdrp->e_machine = EM_NONE;
4310 }
4311
252b5132
RH		 4312 i_ehdrp->e_version = bed->s->ev_current;
4313 i_ehdrp->e_ehsize = bed->s->sizeof_ehdr;
4314
c044fabd 4315 /* No program header, for now. */
252b5132
RH		 4316 i_ehdrp->e_phoff = 0;
4317 i_ehdrp->e_phentsize = 0;
4318 i_ehdrp->e_phnum = 0;
4319
c044fabd 4320 /* Each bfd section is section header entry. */
252b5132
RH		 4321 i_ehdrp->e_entry = bfd_get_start_address (abfd);
4322 i_ehdrp->e_shentsize = bed->s->sizeof_shdr;
4323
c044fabd 4324 /* If we're building an executable, we'll need a program header table. */
252b5132
RH		 4325 if (abfd->flags & EXEC_P)
4326 {
c044fabd 4327 /* It all happens later. */
252b5132
RH		 4328#if 0
4329 i_ehdrp->e_phentsize = sizeof (Elf_External_Phdr);
4330
4331 /* elf_build_phdrs() returns a (NULL-terminated) array of
c044fabd 4332 Elf_Internal_Phdrs. */
252b5132
RH		 4333 i_phdrp = elf_build_phdrs (abfd, i_ehdrp, i_shdrp, &i_ehdrp->e_phnum);
4334 i_ehdrp->e_phoff = outbase;
4335 outbase += i_ehdrp->e_phentsize * i_ehdrp->e_phnum;
4336#endif
4337 }
4338 else
4339 {
4340 i_ehdrp->e_phentsize = 0;
4341 i_phdrp = 0;
4342 i_ehdrp->e_phoff = 0;
4343 }
4344
4345 elf_tdata (abfd)->symtab_hdr.sh_name =
b34976b6 4346 (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", FALSE);
252b5132 4347 elf_tdata (abfd)->strtab_hdr.sh_name =
b34976b6 4348 (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", FALSE);
252b5132 4349 elf_tdata (abfd)->shstrtab_hdr.sh_name =
b34976b6 4350 (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", FALSE);
252b5132
RH		 4351 if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1
4352 || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1
4353 || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1)
b34976b6 4354 return FALSE;
252b5132 4355
b34976b6 4356 return TRUE;
252b5132
RH		 4357}
4358
4359/* Assign file positions for all the reloc sections which are not part
4360 of the loadable file image. */
4361
4362void
4363_bfd_elf_assign_file_positions_for_relocs (abfd)
4364 bfd *abfd;
4365{
4366 file_ptr off;
9ad5cbcf 4367 unsigned int i, num_sec;
252b5132
RH		 4368 Elf_Internal_Shdr **shdrpp;
4369
4370 off = elf_tdata (abfd)->next_file_pos;
4371
9ad5cbcf
AM		 4372 num_sec = elf_numsections (abfd);
4373 for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++)
252b5132
RH		 4374 {
4375 Elf_Internal_Shdr *shdrp;
4376
4377 shdrp = *shdrpp;
4378 if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA)
4379 && shdrp->sh_offset == -1)
b34976b6 4380 off = _bfd_elf_assign_file_position_for_section (shdrp, off, TRUE);
252b5132
RH		 4381 }
4382
4383 elf_tdata (abfd)->next_file_pos = off;
4384}
4385
b34976b6 4386bfd_boolean
252b5132
RH		 4387_bfd_elf_write_object_contents (abfd)
4388 bfd *abfd;
4389{
4390 struct elf_backend_data *bed = get_elf_backend_data (abfd);
4391 Elf_Internal_Ehdr *i_ehdrp;
4392 Elf_Internal_Shdr **i_shdrp;
b34976b6 4393 bfd_boolean failed;
9ad5cbcf 4394 unsigned int count, num_sec;
252b5132
RH		 4395
4396 if (! abfd->output_has_begun
4397 && ! _bfd_elf_compute_section_file_positions
4398 (abfd, (struct bfd_link_info *) NULL))
b34976b6 4399 return FALSE;
252b5132
RH		 4400
4401 i_shdrp = elf_elfsections (abfd);
4402 i_ehdrp = elf_elfheader (abfd);
4403
b34976b6 4404 failed = FALSE;
252b5132
RH		 4405 bfd_map_over_sections (abfd, bed->s->write_relocs, &failed);
4406 if (failed)
b34976b6 4407 return FALSE;
252b5132
RH		 4408
4409 _bfd_elf_assign_file_positions_for_relocs (abfd);
4410
c044fabd 4411 /* After writing the headers, we need to write the sections too... */
9ad5cbcf
AM		 4412 num_sec = elf_numsections (abfd);
4413 for (count = 1; count < num_sec; count++)
252b5132
RH		 4414 {
4415 if (bed->elf_backend_section_processing)
4416 (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]);
4417 if (i_shdrp[count]->contents)
4418 {
dc810e39
AM		 4419 bfd_size_type amt = i_shdrp[count]->sh_size;
4420
252b5132 4421 if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0
dc810e39 4422 || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt)
b34976b6 4423 return FALSE;
252b5132 4424 }
9ad5cbcf
AM		 4425 if (count == SHN_LORESERVE - 1)
4426 count += SHN_HIRESERVE + 1 - SHN_LORESERVE;
252b5132
RH		 4427 }
4428
4429 /* Write out the section header names. */
4430 if (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0
2b0f7ef9 4431 || ! _bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd)))
b34976b6 4432 return FALSE;
252b5132
RH		 4433
4434 if (bed->elf_backend_final_write_processing)
4435 (*bed->elf_backend_final_write_processing) (abfd,
4436 elf_tdata (abfd)->linker);
4437
4438 return bed->s->write_shdrs_and_ehdr (abfd);
4439}
4440
b34976b6 4441bfd_boolean
252b5132
RH		 4442_bfd_elf_write_corefile_contents (abfd)
4443 bfd *abfd;
4444{
c044fabd 4445 /* Hopefully this can be done just like an object file. */
252b5132
RH		 4446 return _bfd_elf_write_object_contents (abfd);
4447}
c044fabd
KH		 4448
4449/* Given a section, search the header to find them. */
4450
252b5132
RH		 4451int
4452_bfd_elf_section_from_bfd_section (abfd, asect)
4453 bfd *abfd;
4454 struct sec *asect;
4455{
af746e92 4456 struct elf_backend_data *bed;
252b5132 4457 int index;
252b5132 4458
9ad5cbcf
AM		 4459 if (elf_section_data (asect) != NULL
4460 && elf_section_data (asect)->this_idx != 0)
4461 return elf_section_data (asect)->this_idx;
4462
4463 if (bfd_is_abs_section (asect))
af746e92
AM		 4464 index = SHN_ABS;
4465 else if (bfd_is_com_section (asect))
4466 index = SHN_COMMON;
4467 else if (bfd_is_und_section (asect))
4468 index = SHN_UNDEF;
4469 else
252b5132 4470 {
af746e92
AM		 4471 Elf_Internal_Shdr **i_shdrp = elf_elfsections (abfd);
4472 int maxindex = elf_numsections (abfd);
4473
4474 for (index = 1; index < maxindex; index++)
4475 {
4476 Elf_Internal_Shdr *hdr = i_shdrp[index];
4477
4478 if (hdr != NULL && hdr->bfd_section == asect)
4479 return index;
4480 }
4481 index = -1;
252b5132
RH		 4482 }
4483
af746e92 4484 bed = get_elf_backend_data (abfd);
252b5132
RH		 4485 if (bed->elf_backend_section_from_bfd_section)
4486 {
af746e92 4487 int retval = index;
9ad5cbcf 4488
af746e92
AM		 4489 if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval))
4490 return retval;
252b5132
RH		 4491 }
4492
af746e92
AM		 4493 if (index == -1)
4494 bfd_set_error (bfd_error_nonrepresentable_section);
252b5132 4495
af746e92 4496 return index;
252b5132
RH		 4497}
4498
4499/* Given a BFD symbol, return the index in the ELF symbol table, or -1
4500 on error. */
4501
4502int
4503_bfd_elf_symbol_from_bfd_symbol (abfd, asym_ptr_ptr)
4504 bfd *abfd;
4505 asymbol **asym_ptr_ptr;
4506{
4507 asymbol *asym_ptr = *asym_ptr_ptr;
4508 int idx;
4509 flagword flags = asym_ptr->flags;
4510
4511 /* When gas creates relocations against local labels, it creates its
4512 own symbol for the section, but does put the symbol into the
4513 symbol chain, so udata is 0. When the linker is generating
4514 relocatable output, this section symbol may be for one of the
4515 input sections rather than the output section. */
4516 if (asym_ptr->udata.i == 0
4517 && (flags & BSF_SECTION_SYM)
4518 && asym_ptr->section)
4519 {
4520 int indx;
4521
4522 if (asym_ptr->section->output_section != NULL)
4523 indx = asym_ptr->section->output_section->index;
4524 else
4525 indx = asym_ptr->section->index;
4e89ac30
L		 4526 if (indx < elf_num_section_syms (abfd)
4527 && elf_section_syms (abfd)[indx] != NULL)
252b5132
RH		 4528 asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i;
4529 }
4530
4531 idx = asym_ptr->udata.i;
4532
4533 if (idx == 0)
4534 {
4535 /* This case can occur when using --strip-symbol on a symbol
4536 which is used in a relocation entry. */
4537 (*_bfd_error_handler)
4538 (_("%s: symbol `%s' required but not present"),
8f615d07 4539 bfd_archive_filename (abfd), bfd_asymbol_name (asym_ptr));
252b5132
RH		 4540 bfd_set_error (bfd_error_no_symbols);
4541 return -1;
4542 }
4543
4544#if DEBUG & 4
4545 {
4546 fprintf (stderr,
661a3fd4 4547 "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n",
252b5132
RH		 4548 (long) asym_ptr, asym_ptr->name, idx, flags,
4549 elf_symbol_flags (flags));
4550 fflush (stderr);
4551 }
4552#endif
4553
4554 return idx;
4555}
4556
4557/* Copy private BFD data. This copies any program header information. */
4558
b34976b6 4559static bfd_boolean
252b5132
RH		 4560copy_private_bfd_data (ibfd, obfd)
4561 bfd *ibfd;
4562 bfd *obfd;
4563{
b34976b6
AM		 4564 Elf_Internal_Ehdr *iehdr;
4565 struct elf_segment_map *map;
4566 struct elf_segment_map *map_first;
4567 struct elf_segment_map **pointer_to_map;
4568 Elf_Internal_Phdr *segment;
4569 asection *section;
4570 unsigned int i;
4571 unsigned int num_segments;
4572 bfd_boolean phdr_included = FALSE;
4573 bfd_vma maxpagesize;
4574 struct elf_segment_map *phdr_adjust_seg = NULL;
4575 unsigned int phdr_adjust_num = 0;
4576 struct elf_backend_data *bed;
bc67d8a6 4577
c044fabd 4578 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
252b5132 4579 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 4580 return TRUE;
252b5132
RH		 4581
4582 if (elf_tdata (ibfd)->phdr == NULL)
b34976b6 4583 return TRUE;
252b5132 4584
caf47ea6 4585 bed = get_elf_backend_data (ibfd);
252b5132
RH		 4586 iehdr = elf_elfheader (ibfd);
4587
bc67d8a6 4588 map_first = NULL;
c044fabd 4589 pointer_to_map = &map_first;
252b5132
RH		 4590
4591 num_segments = elf_elfheader (ibfd)->e_phnum;
bc67d8a6
NC		 4592 maxpagesize = get_elf_backend_data (obfd)->maxpagesize;
4593
4594 /* Returns the end address of the segment + 1. */
aecc8f8a
AM		 4595#define SEGMENT_END(segment, start) \
4596 (start + (segment->p_memsz > segment->p_filesz \
4597 ? segment->p_memsz : segment->p_filesz))
bc67d8a6 4598
eecdbe52
JJ		 4599#define SECTION_SIZE(section, segment) \
4600 (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \
4601 != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \
4602 ? section->_raw_size : 0)
4603
b34976b6 4604 /* Returns TRUE if the given section is contained within
bc67d8a6 4605 the given segment. VMA addresses are compared. */
aecc8f8a
AM		 4606#define IS_CONTAINED_BY_VMA(section, segment) \
4607 (section->vma >= segment->p_vaddr \
eecdbe52 4608 && (section->vma + SECTION_SIZE (section, segment) \
aecc8f8a 4609 <= (SEGMENT_END (segment, segment->p_vaddr))))
c044fabd 4610
b34976b6 4611 /* Returns TRUE if the given section is contained within
bc67d8a6 4612 the given segment. LMA addresses are compared. */
aecc8f8a
AM		 4613#define IS_CONTAINED_BY_LMA(section, segment, base) \
4614 (section->lma >= base \
eecdbe52 4615 && (section->lma + SECTION_SIZE (section, segment) \
aecc8f8a 4616 <= SEGMENT_END (segment, base)))
252b5132 4617
c044fabd 4618 /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */
aecc8f8a
AM		 4619#define IS_COREFILE_NOTE(p, s) \
4620 (p->p_type == PT_NOTE \
4621 && bfd_get_format (ibfd) == bfd_core \
4622 && s->vma == 0 && s->lma == 0 \
4623 && (bfd_vma) s->filepos >= p->p_offset \
4624 && ((bfd_vma) s->filepos + s->_raw_size \
4625 <= p->p_offset + p->p_filesz))
252b5132
RH		 4626
4627 /* The complicated case when p_vaddr is 0 is to handle the Solaris
4628 linker, which generates a PT_INTERP section with p_vaddr and
4629 p_memsz set to 0. */
aecc8f8a
AM		 4630#define IS_SOLARIS_PT_INTERP(p, s) \
4631 (p->p_vaddr == 0 \
4632 && p->p_paddr == 0 \
4633 && p->p_memsz == 0 \
4634 && p->p_filesz > 0 \
4635 && (s->flags & SEC_HAS_CONTENTS) != 0 \
4636 && s->_raw_size > 0 \
4637 && (bfd_vma) s->filepos >= p->p_offset \
4638 && ((bfd_vma) s->filepos + s->_raw_size \
4639 <= p->p_offset + p->p_filesz))
5c440b1e 4640
bc67d8a6
NC		 4641 /* Decide if the given section should be included in the given segment.
4642 A section will be included if:
f5ffc919
NC		 4643 1. It is within the address space of the segment -- we use the LMA
4644 if that is set for the segment and the VMA otherwise,
bc67d8a6
NC		 4645 2. It is an allocated segment,
4646 3. There is an output section associated with it,
eecdbe52
JJ		 4647 4. The section has not already been allocated to a previous segment.
4648 5. PT_TLS segment includes only SHF_TLS sections.
4649 6. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. */
caf47ea6 4650#define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \
aecc8f8a
AM		 4651 ((((segment->p_paddr \
4652 ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \
4653 : IS_CONTAINED_BY_VMA (section, segment)) \
f5ffc919 4654 && (section->flags & SEC_ALLOC) != 0) \
b6821651 4655 || IS_COREFILE_NOTE (segment, section)) \
f5ffc919 4656 && section->output_section != NULL \
eecdbe52
JJ		 4657 && (segment->p_type != PT_TLS \
4658 || (section->flags & SEC_THREAD_LOCAL)) \
4659 && (segment->p_type == PT_LOAD \
4660 || segment->p_type == PT_TLS \
4661 || (section->flags & SEC_THREAD_LOCAL) == 0) \
82e51918 4662 && ! section->segment_mark)
bc67d8a6 4663
b34976b6 4664 /* Returns TRUE iff seg1 starts after the end of seg2. */
b5f852ea
NC		 4665#define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \
4666 (seg1->field >= SEGMENT_END (seg2, seg2->field))
4667
4668 /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both
4669 their VMA address ranges and their LMA address ranges overlap.
4670 It is possible to have overlapping VMA ranges without overlapping LMA
4671 ranges. RedBoot images for example can have both .data and .bss mapped
4672 to the same VMA range, but with the .data section mapped to a different
4673 LMA. */
aecc8f8a 4674#define SEGMENT_OVERLAPS(seg1, seg2) \
b5f852ea
NC		 4675 ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \
4676 || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \
4677 && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \
4678 || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr)))
bc67d8a6
NC		 4679
4680 /* Initialise the segment mark field. */
4681 for (section = ibfd->sections; section != NULL; section = section->next)
b34976b6 4682 section->segment_mark = FALSE;
bc67d8a6 4683
252b5132 4684 /* Scan through the segments specified in the program header
bc67d8a6 4685 of the input BFD. For this first scan we look for overlaps
9ad5cbcf 4686 in the loadable segments. These can be created by weird
aecc8f8a 4687 parameters to objcopy. Also, fix some solaris weirdness. */
bc67d8a6
NC		 4688 for (i = 0, segment = elf_tdata (ibfd)->phdr;
4689 i < num_segments;
c044fabd 4690 i++, segment++)
252b5132 4691 {
252b5132 4692 unsigned int j;
c044fabd 4693 Elf_Internal_Phdr *segment2;
252b5132 4694
aecc8f8a
AM		 4695 if (segment->p_type == PT_INTERP)
4696 for (section = ibfd->sections; section; section = section->next)
4697 if (IS_SOLARIS_PT_INTERP (segment, section))
4698 {
4699 /* Mininal change so that the normal section to segment
4700 assigment code will work. */
4701 segment->p_vaddr = section->vma;
4702 break;
4703 }
4704
bc67d8a6
NC		 4705 if (segment->p_type != PT_LOAD)
4706 continue;
c044fabd 4707
bc67d8a6 4708 /* Determine if this segment overlaps any previous segments. */
c044fabd 4709 for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2 ++)
bc67d8a6
NC		 4710 {
4711 bfd_signed_vma extra_length;
c044fabd 4712
bc67d8a6
NC		 4713 if (segment2->p_type != PT_LOAD
4714 || ! SEGMENT_OVERLAPS (segment, segment2))
4715 continue;
c044fabd 4716
bc67d8a6
NC		 4717 /* Merge the two segments together. */
4718 if (segment2->p_vaddr < segment->p_vaddr)
4719 {
c044fabd
KH		 4720 /* Extend SEGMENT2 to include SEGMENT and then delete
4721 SEGMENT. */
bc67d8a6
NC		 4722 extra_length =
4723 SEGMENT_END (segment, segment->p_vaddr)
4724 - SEGMENT_END (segment2, segment2->p_vaddr);
c044fabd 4725
bc67d8a6
NC		 4726 if (extra_length > 0)
4727 {
4728 segment2->p_memsz += extra_length;
4729 segment2->p_filesz += extra_length;
4730 }
c044fabd 4731
bc67d8a6 4732 segment->p_type = PT_NULL;
c044fabd 4733
bc67d8a6
NC		 4734 /* Since we have deleted P we must restart the outer loop. */
4735 i = 0;
4736 segment = elf_tdata (ibfd)->phdr;
4737 break;
4738 }
4739 else
4740 {
c044fabd
KH		 4741 /* Extend SEGMENT to include SEGMENT2 and then delete
4742 SEGMENT2. */
bc67d8a6
NC		 4743 extra_length =
4744 SEGMENT_END (segment2, segment2->p_vaddr)
4745 - SEGMENT_END (segment, segment->p_vaddr);
c044fabd 4746
bc67d8a6
NC		 4747 if (extra_length > 0)
4748 {
4749 segment->p_memsz += extra_length;
4750 segment->p_filesz += extra_length;
4751 }
c044fabd 4752
bc67d8a6
NC		 4753 segment2->p_type = PT_NULL;
4754 }
4755 }
4756 }
c044fabd 4757
bc67d8a6
NC		 4758 /* The second scan attempts to assign sections to segments. */
4759 for (i = 0, segment = elf_tdata (ibfd)->phdr;
4760 i < num_segments;
4761 i ++, segment ++)
4762 {
4763 unsigned int section_count;
4764 asection ** sections;
4765 asection * output_section;
4766 unsigned int isec;
4767 bfd_vma matching_lma;
4768 bfd_vma suggested_lma;
4769 unsigned int j;
dc810e39 4770 bfd_size_type amt;
bc67d8a6
NC		 4771
4772 if (segment->p_type == PT_NULL)
4773 continue;
c044fabd 4774
bc67d8a6 4775 /* Compute how many sections might be placed into this segment. */
b5f852ea
NC		 4776 for (section = ibfd->sections, section_count = 0;
4777 section != NULL;
4778 section = section->next)
caf47ea6 4779 if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed))
c044fabd 4780 ++section_count;
b5f852ea
NC		 4781
4782 /* Allocate a segment map big enough to contain
4783 all of the sections we have selected. */
dc810e39
AM		 4784 amt = sizeof (struct elf_segment_map);
4785 amt += ((bfd_size_type) section_count - 1) * sizeof (asection *);
4786 map = (struct elf_segment_map *) bfd_alloc (obfd, amt);
bc67d8a6 4787 if (map == NULL)
b34976b6 4788 return FALSE;
252b5132
RH		 4789
4790 /* Initialise the fields of the segment map. Default to
4791 using the physical address of the segment in the input BFD. */
bc67d8a6
NC		 4792 map->next = NULL;
4793 map->p_type = segment->p_type;
4794 map->p_flags = segment->p_flags;
4795 map->p_flags_valid = 1;
4796 map->p_paddr = segment->p_paddr;
4797 map->p_paddr_valid = 1;
252b5132
RH		 4798
4799 /* Determine if this segment contains the ELF file header
4800 and if it contains the program headers themselves. */
bc67d8a6
NC		 4801 map->includes_filehdr = (segment->p_offset == 0
4802 && segment->p_filesz >= iehdr->e_ehsize);
252b5132 4803
bc67d8a6 4804 map->includes_phdrs = 0;
252b5132 4805
bc67d8a6 4806 if (! phdr_included || segment->p_type != PT_LOAD)
252b5132 4807 {
bc67d8a6
NC		 4808 map->includes_phdrs =
4809 (segment->p_offset <= (bfd_vma) iehdr->e_phoff
4810 && (segment->p_offset + segment->p_filesz
252b5132
RH		 4811 >= ((bfd_vma) iehdr->e_phoff
4812 + iehdr->e_phnum * iehdr->e_phentsize)));
c044fabd 4813
bc67d8a6 4814 if (segment->p_type == PT_LOAD && map->includes_phdrs)
b34976b6 4815 phdr_included = TRUE;
252b5132
RH		 4816 }
4817
bc67d8a6 4818 if (section_count == 0)
252b5132
RH		 4819 {
4820 /* Special segments, such as the PT_PHDR segment, may contain
4821 no sections, but ordinary, loadable segments should contain
1ed89aa9
NC		 4822 something. They are allowed by the ELF spec however, so only
4823 a warning is produced. */
bc67d8a6 4824 if (segment->p_type == PT_LOAD)
caf47ea6 4825 (*_bfd_error_handler)
1ed89aa9 4826 (_("%s: warning: Empty loadable segment detected, is this intentional ?\n"),
caf47ea6 4827 bfd_archive_filename (ibfd));
252b5132 4828
bc67d8a6 4829 map->count = 0;
c044fabd
KH		 4830 *pointer_to_map = map;
4831 pointer_to_map = &map->next;
252b5132
RH		 4832
4833 continue;
4834 }
4835
4836 /* Now scan the sections in the input BFD again and attempt
4837 to add their corresponding output sections to the segment map.
4838 The problem here is how to handle an output section which has
4839 been moved (ie had its LMA changed). There are four possibilities:
4840
4841 1. None of the sections have been moved.
4842 In this case we can continue to use the segment LMA from the
4843 input BFD.
4844
4845 2. All of the sections have been moved by the same amount.
4846 In this case we can change the segment's LMA to match the LMA
4847 of the first section.
4848
4849 3. Some of the sections have been moved, others have not.
4850 In this case those sections which have not been moved can be
4851 placed in the current segment which will have to have its size,
4852 and possibly its LMA changed, and a new segment or segments will
4853 have to be created to contain the other sections.
4854
b5f852ea 4855 4. The sections have been moved, but not by the same amount.
252b5132
RH		 4856 In this case we can change the segment's LMA to match the LMA
4857 of the first section and we will have to create a new segment
4858 or segments to contain the other sections.
4859
4860 In order to save time, we allocate an array to hold the section
4861 pointers that we are interested in. As these sections get assigned
4862 to a segment, they are removed from this array. */
4863
0b14c2aa
L		 4864 /* Gcc 2.96 miscompiles this code on mips. Don't do casting here
4865 to work around this long long bug. */
4866 amt = section_count * sizeof (asection *);
dc810e39 4867 sections = (asection **) bfd_malloc (amt);
252b5132 4868 if (sections == NULL)
b34976b6 4869 return FALSE;
252b5132
RH		 4870
4871 /* Step One: Scan for segment vs section LMA conflicts.
4872 Also add the sections to the section array allocated above.
4873 Also add the sections to the current segment. In the common
4874 case, where the sections have not been moved, this means that
4875 we have completely filled the segment, and there is nothing
4876 more to do. */
252b5132 4877 isec = 0;
72730e0c 4878 matching_lma = 0;
252b5132
RH		 4879 suggested_lma = 0;
4880
bc67d8a6
NC		 4881 for (j = 0, section = ibfd->sections;
4882 section != NULL;
4883 section = section->next)
252b5132 4884 {
caf47ea6 4885 if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed))
c0f7859b 4886 {
bc67d8a6
NC		 4887 output_section = section->output_section;
4888
4889 sections[j ++] = section;
252b5132
RH		 4890
4891 /* The Solaris native linker always sets p_paddr to 0.
4892 We try to catch that case here, and set it to the
5e8d7549
NC		 4893 correct value. Note - some backends require that
4894 p_paddr be left as zero. */
bc67d8a6 4895 if (segment->p_paddr == 0
4455705d 4896 && segment->p_vaddr != 0
5e8d7549 4897 && (! bed->want_p_paddr_set_to_zero)
252b5132 4898 && isec == 0
bc67d8a6
NC		 4899 && output_section->lma != 0
4900 && (output_section->vma == (segment->p_vaddr
4901 + (map->includes_filehdr
4902 ? iehdr->e_ehsize
4903 : 0)
4904 + (map->includes_phdrs
079e9a2f
AM		 4905 ? (iehdr->e_phnum
4906 * iehdr->e_phentsize)
bc67d8a6
NC		 4907 : 0))))
4908 map->p_paddr = segment->p_vaddr;
252b5132
RH		 4909
4910 /* Match up the physical address of the segment with the
4911 LMA address of the output section. */
bc67d8a6 4912 if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr)
5e8d7549
NC		 4913 || IS_COREFILE_NOTE (segment, section)
4914 || (bed->want_p_paddr_set_to_zero &&
4915 IS_CONTAINED_BY_VMA (output_section, segment))
4916 )
252b5132
RH		 4917 {
4918 if (matching_lma == 0)
bc67d8a6 4919 matching_lma = output_section->lma;
252b5132
RH		 4920
4921 /* We assume that if the section fits within the segment
bc67d8a6 4922 then it does not overlap any other section within that
252b5132 4923 segment. */
bc67d8a6 4924 map->sections[isec ++] = output_section;
252b5132
RH		 4925 }
4926 else if (suggested_lma == 0)
bc67d8a6 4927 suggested_lma = output_section->lma;
252b5132
RH		 4928 }
4929 }
4930
bc67d8a6 4931 BFD_ASSERT (j == section_count);
252b5132
RH		 4932
4933 /* Step Two: Adjust the physical address of the current segment,
4934 if necessary. */
bc67d8a6 4935 if (isec == section_count)
252b5132
RH		 4936 {
4937 /* All of the sections fitted within the segment as currently
4938 specified. This is the default case. Add the segment to
4939 the list of built segments and carry on to process the next
4940 program header in the input BFD. */
bc67d8a6 4941 map->count = section_count;
c044fabd
KH		 4942 *pointer_to_map = map;
4943 pointer_to_map = &map->next;
252b5132
RH		 4944
4945 free (sections);
4946 continue;
4947 }
252b5132
RH		 4948 else
4949 {
72730e0c
AM		 4950 if (matching_lma != 0)
4951 {
4952 /* At least one section fits inside the current segment.
4953 Keep it, but modify its physical address to match the
4954 LMA of the first section that fitted. */
bc67d8a6 4955 map->p_paddr = matching_lma;
72730e0c
AM		 4956 }
4957 else
4958 {
4959 /* None of the sections fitted inside the current segment.
4960 Change the current segment's physical address to match
4961 the LMA of the first section. */
bc67d8a6 4962 map->p_paddr = suggested_lma;
72730e0c
AM		 4963 }
4964
bc67d8a6
NC		 4965 /* Offset the segment physical address from the lma
4966 to allow for space taken up by elf headers. */
4967 if (map->includes_filehdr)
4968 map->p_paddr -= iehdr->e_ehsize;
252b5132 4969
bc67d8a6
NC		 4970 if (map->includes_phdrs)
4971 {
4972 map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize;
4973
4974 /* iehdr->e_phnum is just an estimate of the number
4975 of program headers that we will need. Make a note
4976 here of the number we used and the segment we chose
4977 to hold these headers, so that we can adjust the
4978 offset when we know the correct value. */
4979 phdr_adjust_num = iehdr->e_phnum;
4980 phdr_adjust_seg = map;
4981 }
252b5132
RH		 4982 }
4983
4984 /* Step Three: Loop over the sections again, this time assigning
caf47ea6 4985 those that fit to the current segment and removing them from the
252b5132
RH		 4986 sections array; but making sure not to leave large gaps. Once all
4987 possible sections have been assigned to the current segment it is
4988 added to the list of built segments and if sections still remain
4989 to be assigned, a new segment is constructed before repeating
4990 the loop. */
4991 isec = 0;
4992 do
4993 {
bc67d8a6 4994 map->count = 0;
252b5132
RH		 4995 suggested_lma = 0;
4996
4997 /* Fill the current segment with sections that fit. */
bc67d8a6 4998 for (j = 0; j < section_count; j++)
252b5132 4999 {
bc67d8a6 5000 section = sections[j];
252b5132 5001
bc67d8a6 5002 if (section == NULL)
252b5132
RH		 5003 continue;
5004
bc67d8a6 5005 output_section = section->output_section;
252b5132 5006
bc67d8a6 5007 BFD_ASSERT (output_section != NULL);
c044fabd 5008
bc67d8a6
NC		 5009 if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr)
5010 || IS_COREFILE_NOTE (segment, section))
252b5132 5011 {
bc67d8a6 5012 if (map->count == 0)
252b5132
RH		 5013 {
5014 /* If the first section in a segment does not start at
bc67d8a6
NC		 5015 the beginning of the segment, then something is
5016 wrong. */
5017 if (output_section->lma !=
5018 (map->p_paddr
5019 + (map->includes_filehdr ? iehdr->e_ehsize : 0)
5020 + (map->includes_phdrs
5021 ? iehdr->e_phnum * iehdr->e_phentsize
5022 : 0)))
252b5132
RH		 5023 abort ();
5024 }
5025 else
5026 {
5027 asection * prev_sec;
252b5132 5028
bc67d8a6 5029 prev_sec = map->sections[map->count - 1];
252b5132
RH		 5030
5031 /* If the gap between the end of the previous section
bc67d8a6
NC		 5032 and the start of this section is more than
5033 maxpagesize then we need to start a new segment. */
079e9a2f
AM		 5034 if ((BFD_ALIGN (prev_sec->lma + prev_sec->_raw_size,
5035 maxpagesize)
caf47ea6 5036 < BFD_ALIGN (output_section->lma, maxpagesize))
079e9a2f
AM		 5037 || ((prev_sec->lma + prev_sec->_raw_size)
5038 > output_section->lma))
252b5132
RH		 5039 {
5040 if (suggested_lma == 0)
bc67d8a6 5041 suggested_lma = output_section->lma;
252b5132
RH		 5042
5043 continue;
5044 }
5045 }
5046
bc67d8a6 5047 map->sections[map->count++] = output_section;
252b5132
RH		 5048 ++isec;
5049 sections[j] = NULL;
b34976b6 5050 section->segment_mark = TRUE;
252b5132
RH		 5051 }
5052 else if (suggested_lma == 0)
bc67d8a6 5053 suggested_lma = output_section->lma;
252b5132
RH		 5054 }
5055
bc67d8a6 5056 BFD_ASSERT (map->count > 0);
252b5132
RH		 5057
5058 /* Add the current segment to the list of built segments. */
c044fabd
KH		 5059 *pointer_to_map = map;
5060 pointer_to_map = &map->next;
252b5132 5061
bc67d8a6 5062 if (isec < section_count)
252b5132
RH		 5063 {
5064 /* We still have not allocated all of the sections to
5065 segments. Create a new segment here, initialise it
5066 and carry on looping. */
dc810e39
AM		 5067 amt = sizeof (struct elf_segment_map);
5068 amt += ((bfd_size_type) section_count - 1) * sizeof (asection *);
5069 map = (struct elf_segment_map *) bfd_alloc (obfd, amt);
bc67d8a6 5070 if (map == NULL)
b34976b6 5071 return FALSE;
252b5132
RH		 5072
5073 /* Initialise the fields of the segment map. Set the physical
5074 physical address to the LMA of the first section that has
5075 not yet been assigned. */
bc67d8a6
NC		 5076 map->next = NULL;
5077 map->p_type = segment->p_type;
5078 map->p_flags = segment->p_flags;
5079 map->p_flags_valid = 1;
5080 map->p_paddr = suggested_lma;
5081 map->p_paddr_valid = 1;
5082 map->includes_filehdr = 0;
5083 map->includes_phdrs = 0;
252b5132
RH		 5084 }
5085 }
bc67d8a6 5086 while (isec < section_count);
252b5132
RH		 5087
5088 free (sections);
5089 }
5090
5091 /* The Solaris linker creates program headers in which all the
5092 p_paddr fields are zero. When we try to objcopy or strip such a
5093 file, we get confused. Check for this case, and if we find it
5094 reset the p_paddr_valid fields. */
bc67d8a6
NC		 5095 for (map = map_first; map != NULL; map = map->next)
5096 if (map->p_paddr != 0)
252b5132 5097 break;
bc67d8a6 5098 if (map == NULL)
b5f852ea
NC		 5099 for (map = map_first; map != NULL; map = map->next)
5100 map->p_paddr_valid = 0;
252b5132 5101
bc67d8a6
NC		 5102 elf_tdata (obfd)->segment_map = map_first;
5103
5104 /* If we had to estimate the number of program headers that were
9ad5cbcf 5105 going to be needed, then check our estimate now and adjust
bc67d8a6
NC		 5106 the offset if necessary. */
5107 if (phdr_adjust_seg != NULL)
5108 {
5109 unsigned int count;
c044fabd 5110
bc67d8a6 5111 for (count = 0, map = map_first; map != NULL; map = map->next)
c044fabd 5112 count++;
252b5132 5113
bc67d8a6
NC		 5114 if (count > phdr_adjust_num)
5115 phdr_adjust_seg->p_paddr
5116 -= (count - phdr_adjust_num) * iehdr->e_phentsize;
5117 }
c044fabd 5118
252b5132 5119#if 0
c044fabd
KH		 5120 /* Final Step: Sort the segments into ascending order of physical
5121 address. */
bc67d8a6 5122 if (map_first != NULL)
252b5132 5123 {
c044fabd 5124 struct elf_segment_map *prev;
252b5132 5125
bc67d8a6
NC		 5126 prev = map_first;
5127 for (map = map_first->next; map != NULL; prev = map, map = map->next)
252b5132 5128 {
bc67d8a6
NC		 5129 /* Yes I know - its a bubble sort.... */
5130 if (map->next != NULL && (map->next->p_paddr < map->p_paddr))
252b5132 5131 {
bc67d8a6
NC		 5132 /* Swap map and map->next. */
5133 prev->next = map->next;
5134 map->next = map->next->next;
5135 prev->next->next = map;
252b5132 5136
bc67d8a6
NC		 5137 /* Restart loop. */
5138 map = map_first;
252b5132
RH		 5139 }
5140 }
5141 }
5142#endif
5143
bc67d8a6 5144#undef SEGMENT_END
eecdbe52 5145#undef SECTION_SIZE
bc67d8a6
NC		 5146#undef IS_CONTAINED_BY_VMA
5147#undef IS_CONTAINED_BY_LMA
252b5132 5148#undef IS_COREFILE_NOTE
bc67d8a6
NC		 5149#undef IS_SOLARIS_PT_INTERP
5150#undef INCLUDE_SECTION_IN_SEGMENT
5151#undef SEGMENT_AFTER_SEGMENT
5152#undef SEGMENT_OVERLAPS
b34976b6 5153 return TRUE;
252b5132
RH		 5154}
5155
5156/* Copy private section information. This copies over the entsize
5157 field, and sometimes the info field. */
5158
b34976b6 5159bfd_boolean
252b5132
RH		 5160_bfd_elf_copy_private_section_data (ibfd, isec, obfd, osec)
5161 bfd *ibfd;
5162 asection *isec;
5163 bfd *obfd;
5164 asection *osec;
5165{
5166 Elf_Internal_Shdr *ihdr, *ohdr;
5167
5168 if (ibfd->xvec->flavour != bfd_target_elf_flavour
5169 || obfd->xvec->flavour != bfd_target_elf_flavour)
b34976b6 5170 return TRUE;
252b5132 5171
ad12c1c5 5172 if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL)
caf47ea6
AM		 5173 {
5174 asection *s;
5175
5176 /* Only set up the segments if there are no more SEC_ALLOC
5177 sections. FIXME: This won't do the right thing if objcopy is
5178 used to remove the last SEC_ALLOC section, since objcopy
5179 won't call this routine in that case. */
5180 for (s = isec->next; s != NULL; s = s->next)
5181 if ((s->flags & SEC_ALLOC) != 0)
5182 break;
5183 if (s == NULL)
5184 {
5185 if (! copy_private_bfd_data (ibfd, obfd))
b34976b6 5186 return FALSE;
caf47ea6 5187 }
252b5132
RH		 5188 }
5189
5190 ihdr = &elf_section_data (isec)->this_hdr;
5191 ohdr = &elf_section_data (osec)->this_hdr;
5192
5193 ohdr->sh_entsize = ihdr->sh_entsize;
5194
5195 if (ihdr->sh_type == SHT_SYMTAB
5196 || ihdr->sh_type == SHT_DYNSYM
5197 || ihdr->sh_type == SHT_GNU_verneed
5198 || ihdr->sh_type == SHT_GNU_verdef)
5199 ohdr->sh_info = ihdr->sh_info;
5200
9dce4196
AM		 5201 /* Set things up for objcopy. The output SHT_GROUP section will
5202 have its elf_next_in_group pointing back to the input group
5203 members. */
5204 elf_next_in_group (osec) = elf_next_in_group (isec);
5205 elf_group_name (osec) = elf_group_name (isec);
5206
68bfbfcc 5207 osec->use_rela_p = isec->use_rela_p;
bf572ba0 5208
b34976b6 5209 return TRUE;
252b5132
RH		 5210}
5211
5212/* Copy private symbol information. If this symbol is in a section
5213 which we did not map into a BFD section, try to map the section
5214 index correctly. We use special macro definitions for the mapped
5215 section indices; these definitions are interpreted by the
5216 swap_out_syms function. */
5217
9ad5cbcf
AM		 5218#define MAP_ONESYMTAB (SHN_HIOS + 1)
5219#define MAP_DYNSYMTAB (SHN_HIOS + 2)
5220#define MAP_STRTAB (SHN_HIOS + 3)
5221#define MAP_SHSTRTAB (SHN_HIOS + 4)
5222#define MAP_SYM_SHNDX (SHN_HIOS + 5)
252b5132 5223
b34976b6 5224bfd_boolean
252b5132
RH		 5225_bfd_elf_copy_private_symbol_data (ibfd, isymarg, obfd, osymarg)
5226 bfd *ibfd;
5227 asymbol *isymarg;
5228 bfd *obfd;
5229 asymbol *osymarg;
5230{
5231 elf_symbol_type *isym, *osym;
5232
5233 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
5234 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
b34976b6 5235 return TRUE;
252b5132
RH		 5236
5237 isym = elf_symbol_from (ibfd, isymarg);
5238 osym = elf_symbol_from (obfd, osymarg);
5239
5240 if (isym != NULL
5241 && osym != NULL
5242 && bfd_is_abs_section (isym->symbol.section))
5243 {
5244 unsigned int shndx;
5245
5246 shndx = isym->internal_elf_sym.st_shndx;
5247 if (shndx == elf_onesymtab (ibfd))
5248 shndx = MAP_ONESYMTAB;
5249 else if (shndx == elf_dynsymtab (ibfd))
5250 shndx = MAP_DYNSYMTAB;
5251 else if (shndx == elf_tdata (ibfd)->strtab_section)
5252 shndx = MAP_STRTAB;
5253 else if (shndx == elf_tdata (ibfd)->shstrtab_section)
5254 shndx = MAP_SHSTRTAB;
9ad5cbcf
AM		 5255 else if (shndx == elf_tdata (ibfd)->symtab_shndx_section)
5256 shndx = MAP_SYM_SHNDX;
252b5132
RH		 5257 osym->internal_elf_sym.st_shndx = shndx;
5258 }
5259
b34976b6 5260 return TRUE;
252b5132
RH		 5261}
5262
5263/* Swap out the symbols. */
5264
b34976b6 5265static bfd_boolean
252b5132
RH		 5266swap_out_syms (abfd, sttp, relocatable_p)
5267 bfd *abfd;
5268 struct bfd_strtab_hash **sttp;
5269 int relocatable_p;
5270{
079e9a2f
AM		 5271 struct elf_backend_data *bed;
5272 int symcount;
5273 asymbol **syms;
5274 struct bfd_strtab_hash *stt;
5275 Elf_Internal_Shdr *symtab_hdr;
9ad5cbcf 5276 Elf_Internal_Shdr *symtab_shndx_hdr;
079e9a2f
AM		 5277 Elf_Internal_Shdr *symstrtab_hdr;
5278 char *outbound_syms;
9ad5cbcf 5279 char *outbound_shndx;
079e9a2f
AM		 5280 int idx;
5281 bfd_size_type amt;
252b5132
RH		 5282
5283 if (!elf_map_symbols (abfd))
b34976b6 5284 return FALSE;
252b5132 5285
c044fabd 5286 /* Dump out the symtabs. */
079e9a2f
AM		 5287 stt = _bfd_elf_stringtab_init ();
5288 if (stt == NULL)
b34976b6 5289 return FALSE;
252b5132 5290
079e9a2f
AM		 5291 bed = get_elf_backend_data (abfd);
5292 symcount = bfd_get_symcount (abfd);
5293 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5294 symtab_hdr->sh_type = SHT_SYMTAB;
5295 symtab_hdr->sh_entsize = bed->s->sizeof_sym;
5296 symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1);
5297 symtab_hdr->sh_info = elf_num_locals (abfd) + 1;
5298 symtab_hdr->sh_addralign = bed->s->file_align;
5299
5300 symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr;
5301 symstrtab_hdr->sh_type = SHT_STRTAB;
5302
5303 amt = (bfd_size_type) (1 + symcount) * bed->s->sizeof_sym;
5304 outbound_syms = bfd_alloc (abfd, amt);
5305 if (outbound_syms == NULL)
b34976b6 5306 return FALSE;
079e9a2f 5307 symtab_hdr->contents = (PTR) outbound_syms;
252b5132 5308
9ad5cbcf
AM		 5309 outbound_shndx = NULL;
5310 symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
5311 if (symtab_shndx_hdr->sh_name != 0)
5312 {
5313 amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx);
1126897b 5314 outbound_shndx = bfd_zalloc (abfd, amt);
9ad5cbcf 5315 if (outbound_shndx == NULL)
b34976b6 5316 return FALSE;
9ad5cbcf
AM		 5317 symtab_shndx_hdr->contents = outbound_shndx;
5318 symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX;
5319 symtab_shndx_hdr->sh_size = amt;
5320 symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx);
5321 symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx);
5322 }
5323
589e6347 5324 /* Now generate the data (for "contents"). */
079e9a2f
AM		 5325 {
5326 /* Fill in zeroth symbol and swap it out. */
5327 Elf_Internal_Sym sym;
5328 sym.st_name = 0;
5329 sym.st_value = 0;
5330 sym.st_size = 0;
5331 sym.st_info = 0;
5332 sym.st_other = 0;
5333 sym.st_shndx = SHN_UNDEF;
9ad5cbcf 5334 bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx);
079e9a2f 5335 outbound_syms += bed->s->sizeof_sym;
9ad5cbcf
AM		 5336 if (outbound_shndx != NULL)
5337 outbound_shndx += sizeof (Elf_External_Sym_Shndx);
079e9a2f 5338 }
252b5132 5339
079e9a2f
AM		 5340 syms = bfd_get_outsymbols (abfd);
5341 for (idx = 0; idx < symcount; idx++)
252b5132 5342 {
252b5132 5343 Elf_Internal_Sym sym;
079e9a2f
AM		 5344 bfd_vma value = syms[idx]->value;
5345 elf_symbol_type *type_ptr;
5346 flagword flags = syms[idx]->flags;
5347 int type;
252b5132 5348
079e9a2f
AM		 5349 if ((flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM)
5350 {
5351 /* Local section symbols have no name. */
5352 sym.st_name = 0;
5353 }
5354 else
5355 {
5356 sym.st_name = (unsigned long) _bfd_stringtab_add (stt,
5357 syms[idx]->name,
b34976b6 5358 TRUE, FALSE);
079e9a2f 5359 if (sym.st_name == (unsigned long) -1)
b34976b6 5360 return FALSE;
079e9a2f 5361 }
252b5132 5362
079e9a2f 5363 type_ptr = elf_symbol_from (abfd, syms[idx]);
252b5132 5364
079e9a2f
AM		 5365 if ((flags & BSF_SECTION_SYM) == 0
5366 && bfd_is_com_section (syms[idx]->section))
5367 {
5368 /* ELF common symbols put the alignment into the `value' field,
5369 and the size into the `size' field. This is backwards from
5370 how BFD handles it, so reverse it here. */
5371 sym.st_size = value;
5372 if (type_ptr == NULL
5373 || type_ptr->internal_elf_sym.st_value == 0)
5374 sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value));
5375 else
5376 sym.st_value = type_ptr->internal_elf_sym.st_value;
5377 sym.st_shndx = _bfd_elf_section_from_bfd_section
5378 (abfd, syms[idx]->section);
5379 }
5380 else
5381 {
5382 asection *sec = syms[idx]->section;
5383 int shndx;
252b5132 5384
079e9a2f
AM		 5385 if (sec->output_section)
5386 {
5387 value += sec->output_offset;
5388 sec = sec->output_section;
5389 }
589e6347 5390
079e9a2f
AM		 5391 /* Don't add in the section vma for relocatable output. */
5392 if (! relocatable_p)
5393 value += sec->vma;
5394 sym.st_value = value;
5395 sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0;
5396
5397 if (bfd_is_abs_section (sec)
5398 && type_ptr != NULL
5399 && type_ptr->internal_elf_sym.st_shndx != 0)
5400 {
5401 /* This symbol is in a real ELF section which we did
5402 not create as a BFD section. Undo the mapping done
5403 by copy_private_symbol_data. */
5404 shndx = type_ptr->internal_elf_sym.st_shndx;
5405 switch (shndx)
5406 {
5407 case MAP_ONESYMTAB:
5408 shndx = elf_onesymtab (abfd);
5409 break;
5410 case MAP_DYNSYMTAB:
5411 shndx = elf_dynsymtab (abfd);
5412 break;
5413 case MAP_STRTAB:
5414 shndx = elf_tdata (abfd)->strtab_section;
5415 break;
5416 case MAP_SHSTRTAB:
5417 shndx = elf_tdata (abfd)->shstrtab_section;
5418 break;
9ad5cbcf
AM		 5419 case MAP_SYM_SHNDX:
5420 shndx = elf_tdata (abfd)->symtab_shndx_section;
5421 break;
079e9a2f
AM		 5422 default:
5423 break;
5424 }
5425 }
5426 else
5427 {
5428 shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
252b5132 5429
079e9a2f
AM		 5430 if (shndx == -1)
5431 {
5432 asection *sec2;
5433
5434 /* Writing this would be a hell of a lot easier if
5435 we had some decent documentation on bfd, and
5436 knew what to expect of the library, and what to
5437 demand of applications. For example, it
5438 appears that `objcopy' might not set the
5439 section of a symbol to be a section that is
5440 actually in the output file. */
5441 sec2 = bfd_get_section_by_name (abfd, sec->name);
589e6347
NC		 5442 if (sec2 == NULL)
5443 {
5444 _bfd_error_handler (_("\
5445Unable to find equivalent output section for symbol '%s' from section '%s'"),
5446 syms[idx]->name ? syms[idx]->name : "<Local sym>",
5447 sec->name);
5448 bfd_set_error (bfd_error_invalid_operation);
5449 return FALSE;
5450 }
5451
079e9a2f
AM		 5452 shndx = _bfd_elf_section_from_bfd_section (abfd, sec2);
5453 BFD_ASSERT (shndx != -1);
5454 }
5455 }
252b5132 5456
079e9a2f
AM		 5457 sym.st_shndx = shndx;
5458 }
252b5132 5459
13ae64f3
JJ		 5460 if ((flags & BSF_THREAD_LOCAL) != 0)
5461 type = STT_TLS;
5462 else if ((flags & BSF_FUNCTION) != 0)
079e9a2f
AM		 5463 type = STT_FUNC;
5464 else if ((flags & BSF_OBJECT) != 0)
5465 type = STT_OBJECT;
5466 else
5467 type = STT_NOTYPE;
252b5132 5468
13ae64f3
JJ		 5469 if (syms[idx]->section->flags & SEC_THREAD_LOCAL)
5470 type = STT_TLS;
5471
589e6347 5472 /* Processor-specific types. */
079e9a2f
AM		 5473 if (type_ptr != NULL
5474 && bed->elf_backend_get_symbol_type)
5475 type = ((*bed->elf_backend_get_symbol_type)
5476 (&type_ptr->internal_elf_sym, type));
252b5132 5477
079e9a2f
AM		 5478 if (flags & BSF_SECTION_SYM)
5479 {
5480 if (flags & BSF_GLOBAL)
5481 sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
5482 else
5483 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
5484 }
5485 else if (bfd_is_com_section (syms[idx]->section))
5486 sym.st_info = ELF_ST_INFO (STB_GLOBAL, type);
5487 else if (bfd_is_und_section (syms[idx]->section))
5488 sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK)
5489 ? STB_WEAK
5490 : STB_GLOBAL),
5491 type);
5492 else if (flags & BSF_FILE)
5493 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE);
5494 else
5495 {
5496 int bind = STB_LOCAL;
252b5132 5497
079e9a2f
AM		 5498 if (flags & BSF_LOCAL)
5499 bind = STB_LOCAL;
5500 else if (flags & BSF_WEAK)
5501 bind = STB_WEAK;
5502 else if (flags & BSF_GLOBAL)
5503 bind = STB_GLOBAL;
252b5132 5504
079e9a2f
AM		 5505 sym.st_info = ELF_ST_INFO (bind, type);
5506 }
252b5132 5507
079e9a2f
AM		 5508 if (type_ptr != NULL)
5509 sym.st_other = type_ptr->internal_elf_sym.st_other;
5510 else
5511 sym.st_other = 0;
252b5132 5512
9ad5cbcf 5513 bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx);
079e9a2f 5514 outbound_syms += bed->s->sizeof_sym;
9ad5cbcf
AM		 5515 if (outbound_shndx != NULL)
5516 outbound_shndx += sizeof (Elf_External_Sym_Shndx);
079e9a2f 5517 }
252b5132 5518
079e9a2f
AM		 5519 *sttp = stt;
5520 symstrtab_hdr->sh_size = _bfd_stringtab_size (stt);
5521 symstrtab_hdr->sh_type = SHT_STRTAB;
252b5132 5522
079e9a2f
AM		 5523 symstrtab_hdr->sh_flags = 0;
5524 symstrtab_hdr->sh_addr = 0;
5525 symstrtab_hdr->sh_entsize = 0;
5526 symstrtab_hdr->sh_link = 0;
5527 symstrtab_hdr->sh_info = 0;
5528 symstrtab_hdr->sh_addralign = 1;
252b5132 5529
b34976b6 5530 return TRUE;
252b5132
RH		 5531}
5532
5533/* Return the number of bytes required to hold the symtab vector.
5534
5535 Note that we base it on the count plus 1, since we will null terminate
5536 the vector allocated based on this size. However, the ELF symbol table
5537 always has a dummy entry as symbol #0, so it ends up even. */
5538
5539long
5540_bfd_elf_get_symtab_upper_bound (abfd)
5541 bfd *abfd;
5542{
5543 long symcount;
5544 long symtab_size;
5545 Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr;
5546
5547 symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym;
b99d1833
AM		 5548 symtab_size = (symcount + 1) * (sizeof (asymbol *));
5549 if (symcount > 0)
5550 symtab_size -= sizeof (asymbol *);
252b5132
RH		 5551
5552 return symtab_size;
5553}
5554
5555long
5556_bfd_elf_get_dynamic_symtab_upper_bound (abfd)
5557 bfd *abfd;
5558{
5559 long symcount;
5560 long symtab_size;
5561 Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr;
5562
5563 if (elf_dynsymtab (abfd) == 0)
5564 {
5565 bfd_set_error (bfd_error_invalid_operation);
5566 return -1;
5567 }
5568
5569 symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym;
b99d1833
AM		 5570 symtab_size = (symcount + 1) * (sizeof (asymbol *));
5571 if (symcount > 0)
5572 symtab_size -= sizeof (asymbol *);
252b5132
RH		 5573
5574 return symtab_size;
5575}
5576
5577long
5578_bfd_elf_get_reloc_upper_bound (abfd, asect)
7442e600 5579 bfd *abfd ATTRIBUTE_UNUSED;
252b5132
RH		 5580 sec_ptr asect;
5581{
5582 return (asect->reloc_count + 1) * sizeof (arelent *);
5583}
5584
5585/* Canonicalize the relocs. */
5586
5587long
5588_bfd_elf_canonicalize_reloc (abfd, section, relptr, symbols)
5589 bfd *abfd;
5590 sec_ptr section;
5591 arelent **relptr;
5592 asymbol **symbols;
5593{
5594 arelent *tblptr;
5595 unsigned int i;
dbb410c3 5596 struct elf_backend_data *bed = get_elf_backend_data (abfd);
252b5132 5597
b34976b6 5598 if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE))
252b5132
RH		 5599 return -1;
5600
5601 tblptr = section->relocation;
5602 for (i = 0; i < section->reloc_count; i++)
5603 *relptr++ = tblptr++;
5604
5605 *relptr = NULL;
5606
5607 return section->reloc_count;
5608}
5609
5610long
5611_bfd_elf_get_symtab (abfd, alocation)
5612 bfd *abfd;
5613 asymbol **alocation;
5614{
dbb410c3 5615 struct elf_backend_data *bed = get_elf_backend_data (abfd);
b34976b6 5616 long symcount = bed->s->slurp_symbol_table (abfd, alocation, FALSE);
252b5132
RH		 5617
5618 if (symcount >= 0)
5619 bfd_get_symcount (abfd) = symcount;
5620 return symcount;
5621}
5622
5623long
5624_bfd_elf_canonicalize_dynamic_symtab (abfd, alocation)
5625 bfd *abfd;
5626 asymbol **alocation;
5627{
dbb410c3 5628 struct elf_backend_data *bed = get_elf_backend_data (abfd);
b34976b6 5629 long symcount = bed->s->slurp_symbol_table (abfd, alocation, TRUE);
1f70368c
DJ		 5630
5631 if (symcount >= 0)
5632 bfd_get_dynamic_symcount (abfd) = symcount;
5633 return symcount;
252b5132
RH		 5634}
5635
5636/* Return the size required for the dynamic reloc entries. Any
5637 section that was actually installed in the BFD, and has type
5638 SHT_REL or SHT_RELA, and uses the dynamic symbol table, is
5639 considered to be a dynamic reloc section. */
5640
5641long
5642_bfd_elf_get_dynamic_reloc_upper_bound (abfd)
5643 bfd *abfd;
5644{
5645 long ret;
5646 asection *s;
5647
5648 if (elf_dynsymtab (abfd) == 0)
5649 {
5650 bfd_set_error (bfd_error_invalid_operation);
5651 return -1;
5652 }
5653
5654 ret = sizeof (arelent *);
5655 for (s = abfd->sections; s != NULL; s = s->next)
5656 if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
5657 && (elf_section_data (s)->this_hdr.sh_type == SHT_REL
5658 || elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
5659 ret += ((s->_raw_size / elf_section_data (s)->this_hdr.sh_entsize)
5660 * sizeof (arelent *));
5661
5662 return ret;
5663}
5664
5665/* Canonicalize the dynamic relocation entries. Note that we return
5666 the dynamic relocations as a single block, although they are
5667 actually associated with particular sections; the interface, which
5668 was designed for SunOS style shared libraries, expects that there
5669 is only one set of dynamic relocs. Any section that was actually
5670 installed in the BFD, and has type SHT_REL or SHT_RELA, and uses
5671 the dynamic symbol table, is considered to be a dynamic reloc
5672 section. */
5673
5674long
5675_bfd_elf_canonicalize_dynamic_reloc (abfd, storage, syms)
5676 bfd *abfd;
5677 arelent **storage;
5678 asymbol **syms;
5679{
b34976b6
AM		 5680 bfd_boolean (*slurp_relocs)
5681 PARAMS ((bfd *, asection *, asymbol **, bfd_boolean));
252b5132
RH		 5682 asection *s;
5683 long ret;
5684
5685 if (elf_dynsymtab (abfd) == 0)
5686 {
5687 bfd_set_error (bfd_error_invalid_operation);
5688 return -1;
5689 }
5690
5691 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
5692 ret = 0;
5693 for (s = abfd->sections; s != NULL; s = s->next)
5694 {
5695 if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
5696 && (elf_section_data (s)->this_hdr.sh_type == SHT_REL
5697 || elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
5698 {
5699 arelent *p;
5700 long count, i;
5701
b34976b6 5702 if (! (*slurp_relocs) (abfd, s, syms, TRUE))
252b5132
RH		 5703 return -1;
5704 count = s->_raw_size / elf_section_data (s)->this_hdr.sh_entsize;
5705 p = s->relocation;
5706 for (i = 0; i < count; i++)
5707 *storage++ = p++;
5708 ret += count;
5709 }
5710 }
5711
5712 *storage = NULL;
5713
5714 return ret;
5715}
5716\f
5717/* Read in the version information. */
5718
b34976b6 5719bfd_boolean
252b5132
RH		 5720_bfd_elf_slurp_version_tables (abfd)
5721 bfd *abfd;
5722{
5723 bfd_byte *contents = NULL;
dc810e39 5724 bfd_size_type amt;
252b5132
RH		 5725
5726 if (elf_dynverdef (abfd) != 0)
5727 {
5728 Elf_Internal_Shdr *hdr;
5729 Elf_External_Verdef *everdef;
5730 Elf_Internal_Verdef *iverdef;
f631889e
UD		 5731 Elf_Internal_Verdef *iverdefarr;
5732 Elf_Internal_Verdef iverdefmem;
252b5132 5733 unsigned int i;
062e2358 5734 unsigned int maxidx;
252b5132
RH		 5735
5736 hdr = &elf_tdata (abfd)->dynverdef_hdr;
5737
252b5132
RH		 5738 contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
5739 if (contents == NULL)
5740 goto error_return;
5741 if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
dc810e39 5742 || bfd_bread ((PTR) contents, hdr->sh_size, abfd) != hdr->sh_size)
252b5132
RH		 5743 goto error_return;
5744
f631889e
UD		 5745 /* We know the number of entries in the section but not the maximum
5746 index. Therefore we have to run through all entries and find
5747 the maximum. */
252b5132 5748 everdef = (Elf_External_Verdef *) contents;
f631889e
UD		 5749 maxidx = 0;
5750 for (i = 0; i < hdr->sh_info; ++i)
5751 {
5752 _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem);
5753
062e2358
AM		 5754 if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx)
5755 maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION);
f631889e
UD		 5756
5757 everdef = ((Elf_External_Verdef *)
5758 ((bfd_byte *) everdef + iverdefmem.vd_next));
5759 }
5760
dc810e39
AM		 5761 amt = (bfd_size_type) maxidx * sizeof (Elf_Internal_Verdef);
5762 elf_tdata (abfd)->verdef = (Elf_Internal_Verdef *) bfd_zalloc (abfd, amt);
f631889e
UD		 5763 if (elf_tdata (abfd)->verdef == NULL)
5764 goto error_return;
5765
5766 elf_tdata (abfd)->cverdefs = maxidx;
5767
5768 everdef = (Elf_External_Verdef *) contents;
5769 iverdefarr = elf_tdata (abfd)->verdef;
5770 for (i = 0; i < hdr->sh_info; i++)
252b5132
RH		 5771 {
5772 Elf_External_Verdaux *everdaux;
5773 Elf_Internal_Verdaux *iverdaux;
5774 unsigned int j;
5775
f631889e
UD		 5776 _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem);
5777
5778 iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1];
5779 memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef));
252b5132
RH		 5780
5781 iverdef->vd_bfd = abfd;
5782
dc810e39
AM		 5783 amt = (bfd_size_type) iverdef->vd_cnt * sizeof (Elf_Internal_Verdaux);
5784 iverdef->vd_auxptr = (Elf_Internal_Verdaux *) bfd_alloc (abfd, amt);
252b5132
RH		 5785 if (iverdef->vd_auxptr == NULL)
5786 goto error_return;
5787
5788 everdaux = ((Elf_External_Verdaux *)
5789 ((bfd_byte *) everdef + iverdef->vd_aux));
5790 iverdaux = iverdef->vd_auxptr;
5791 for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++)
5792 {
5793 _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux);
5794
5795 iverdaux->vda_nodename =
5796 bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
5797 iverdaux->vda_name);
5798 if (iverdaux->vda_nodename == NULL)
5799 goto error_return;
5800
5801 if (j + 1 < iverdef->vd_cnt)
5802 iverdaux->vda_nextptr = iverdaux + 1;
5803 else
5804 iverdaux->vda_nextptr = NULL;
5805
5806 everdaux = ((Elf_External_Verdaux *)
5807 ((bfd_byte *) everdaux + iverdaux->vda_next));
5808 }
5809
5810 iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename;
5811
5812 if (i + 1 < hdr->sh_info)
5813 iverdef->vd_nextdef = iverdef + 1;
5814 else
5815 iverdef->vd_nextdef = NULL;
5816
5817 everdef = ((Elf_External_Verdef *)
5818 ((bfd_byte *) everdef + iverdef->vd_next));
5819 }
5820
5821 free (contents);
5822 contents = NULL;
5823 }
5824
5825 if (elf_dynverref (abfd) != 0)
5826 {
5827 Elf_Internal_Shdr *hdr;
5828 Elf_External_Verneed *everneed;
5829 Elf_Internal_Verneed *iverneed;
5830 unsigned int i;
5831
5832 hdr = &elf_tdata (abfd)->dynverref_hdr;
5833
dc810e39 5834 amt = (bfd_size_type) hdr->sh_info * sizeof (Elf_Internal_Verneed);
252b5132 5835 elf_tdata (abfd)->verref =
dc810e39 5836 (Elf_Internal_Verneed *) bfd_zalloc (abfd, amt);
252b5132
RH		 5837 if (elf_tdata (abfd)->verref == NULL)
5838 goto error_return;
5839
5840 elf_tdata (abfd)->cverrefs = hdr->sh_info;
5841
5842 contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
5843 if (contents == NULL)
5844 goto error_return;
5845 if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
dc810e39 5846 || bfd_bread ((PTR) contents, hdr->sh_size, abfd) != hdr->sh_size)
252b5132
RH		 5847 goto error_return;
5848
5849 everneed = (Elf_External_Verneed *) contents;
5850 iverneed = elf_tdata (abfd)->verref;
5851 for (i = 0; i < hdr->sh_info; i++, iverneed++)
5852 {
5853 Elf_External_Vernaux *evernaux;
5854 Elf_Internal_Vernaux *ivernaux;
5855 unsigned int j;
5856
5857 _bfd_elf_swap_verneed_in (abfd, everneed, iverneed);
5858
5859 iverneed->vn_bfd = abfd;
5860
5861 iverneed->vn_filename =
5862 bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
5863 iverneed->vn_file);
5864 if (iverneed->vn_filename == NULL)
5865 goto error_return;
5866
dc810e39
AM		 5867 amt = iverneed->vn_cnt;
5868 amt *= sizeof (Elf_Internal_Vernaux);
5869 iverneed->vn_auxptr = (Elf_Internal_Vernaux *) bfd_alloc (abfd, amt);
252b5132
RH		 5870
5871 evernaux = ((Elf_External_Vernaux *)
5872 ((bfd_byte *) everneed + iverneed->vn_aux));
5873 ivernaux = iverneed->vn_auxptr;
5874 for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++)
5875 {
5876 _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux);
5877
5878 ivernaux->vna_nodename =
5879 bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
5880 ivernaux->vna_name);
5881 if (ivernaux->vna_nodename == NULL)
5882 goto error_return;
5883
5884 if (j + 1 < iverneed->vn_cnt)
5885 ivernaux->vna_nextptr = ivernaux + 1;
5886 else
5887 ivernaux->vna_nextptr = NULL;
5888
5889 evernaux = ((Elf_External_Vernaux *)
5890 ((bfd_byte *) evernaux + ivernaux->vna_next));
5891 }
5892
5893 if (i + 1 < hdr->sh_info)
5894 iverneed->vn_nextref = iverneed + 1;
5895 else
5896 iverneed->vn_nextref = NULL;
5897
5898 everneed = ((Elf_External_Verneed *)
5899 ((bfd_byte *) everneed + iverneed->vn_next));
5900 }
5901
5902 free (contents);
5903 contents = NULL;
5904 }
5905
b34976b6 5906 return TRUE;
252b5132
RH		 5907
5908 error_return:
5909 if (contents == NULL)
5910 free (contents);
b34976b6 5911 return FALSE;
252b5132
RH		 5912}
5913\f
5914asymbol *
5915_bfd_elf_make_empty_symbol (abfd)
5916 bfd *abfd;
5917{
5918 elf_symbol_type *newsym;
dc810e39 5919 bfd_size_type amt = sizeof (elf_symbol_type);
252b5132 5920
dc810e39 5921 newsym = (elf_symbol_type *) bfd_zalloc (abfd, amt);
252b5132
RH		 5922 if (!newsym)
5923 return NULL;
5924 else
5925 {
5926 newsym->symbol.the_bfd = abfd;
5927 return &newsym->symbol;
5928 }
5929}
5930
5931void
5932_bfd_elf_get_symbol_info (ignore_abfd, symbol, ret)
7442e600 5933 bfd *ignore_abfd ATTRIBUTE_UNUSED;
252b5132
RH		 5934 asymbol *symbol;
5935 symbol_info *ret;
5936{
5937 bfd_symbol_info (symbol, ret);
5938}
5939
5940/* Return whether a symbol name implies a local symbol. Most targets
5941 use this function for the is_local_label_name entry point, but some
5942 override it. */
5943
b34976b6 5944bfd_boolean
252b5132 5945_bfd_elf_is_local_label_name (abfd, name)
7442e600 5946 bfd *abfd ATTRIBUTE_UNUSED;
252b5132
RH		 5947 const char *name;
5948{
5949 /* Normal local symbols start with ``.L''. */
5950 if (name[0] == '.' && name[1] == 'L')
b34976b6 5951 return TRUE;
252b5132
RH		 5952
5953 /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate
5954 DWARF debugging symbols starting with ``..''. */
5955 if (name[0] == '.' && name[1] == '.')
b34976b6 5956 return TRUE;
252b5132
RH		 5957
5958 /* gcc will sometimes generate symbols beginning with ``_.L_'' when
5959 emitting DWARF debugging output. I suspect this is actually a
5960 small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call
5961 ASM_GENERATE_INTERNAL_LABEL, and this causes the leading
5962 underscore to be emitted on some ELF targets). For ease of use,
5963 we treat such symbols as local. */
5964 if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_')
b34976b6 5965 return TRUE;
252b5132 5966
b34976b6 5967 return FALSE;
252b5132
RH		 5968}
5969
5970alent *
5971_bfd_elf_get_lineno (ignore_abfd, symbol)
7442e600
ILT		 5972 bfd *ignore_abfd ATTRIBUTE_UNUSED;
5973 asymbol *symbol ATTRIBUTE_UNUSED;
252b5132
RH		 5974{
5975 abort ();
5976 return NULL;
5977}
5978
b34976b6 5979bfd_boolean
252b5132
RH		 5980_bfd_elf_set_arch_mach (abfd, arch, machine)
5981 bfd *abfd;
5982 enum bfd_architecture arch;
5983 unsigned long machine;
5984{
5985 /* If this isn't the right architecture for this backend, and this
5986 isn't the generic backend, fail. */
5987 if (arch != get_elf_backend_data (abfd)->arch
5988 && arch != bfd_arch_unknown
5989 && get_elf_backend_data (abfd)->arch != bfd_arch_unknown)
b34976b6 5990 return FALSE;
252b5132
RH		 5991
5992 return bfd_default_set_arch_mach (abfd, arch, machine);
5993}
5994
d1fad7c6
NC		 5995/* Find the function to a particular section and offset,
5996 for error reporting. */
252b5132 5997
b34976b6 5998static bfd_boolean
d1fad7c6 5999elf_find_function (abfd, section, symbols, offset,
4e8a9624 6000 filename_ptr, functionname_ptr)
d1fad7c6 6001 bfd *abfd ATTRIBUTE_UNUSED;
252b5132
RH		 6002 asection *section;
6003 asymbol **symbols;
6004 bfd_vma offset;
4e8a9624
AM		 6005 const char **filename_ptr;
6006 const char **functionname_ptr;
252b5132 6007{
252b5132
RH		 6008 const char *filename;
6009 asymbol *func;
6010 bfd_vma low_func;
6011 asymbol **p;
6012
252b5132
RH		 6013 filename = NULL;
6014 func = NULL;
6015 low_func = 0;
6016
6017 for (p = symbols; *p != NULL; p++)
6018 {
6019 elf_symbol_type *q;
6020
6021 q = (elf_symbol_type *) *p;
6022
6023 if (bfd_get_section (&q->symbol) != section)
6024 continue;
6025
6026 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
6027 {
6028 default:
6029 break;
6030 case STT_FILE:
6031 filename = bfd_asymbol_name (&q->symbol);
6032 break;
6033 case STT_NOTYPE:
6034 case STT_FUNC:
6035 if (q->symbol.section == section
6036 && q->symbol.value >= low_func
6037 && q->symbol.value <= offset)
6038 {
6039 func = (asymbol *) q;
6040 low_func = q->symbol.value;
6041 }
6042 break;
6043 }
6044 }
6045
6046 if (func == NULL)
b34976b6 6047 return FALSE;
252b5132 6048
d1fad7c6
NC		 6049 if (filename_ptr)
6050 *filename_ptr = filename;
6051 if (functionname_ptr)
6052 *functionname_ptr = bfd_asymbol_name (func);
6053
b34976b6 6054 return TRUE;
d1fad7c6
NC		 6055}
6056
6057/* Find the nearest line to a particular section and offset,
6058 for error reporting. */
6059
b34976b6 6060bfd_boolean
d1fad7c6 6061_bfd_elf_find_nearest_line (abfd, section, symbols, offset,
4e8a9624 6062 filename_ptr, functionname_ptr, line_ptr)
d1fad7c6
NC		 6063 bfd *abfd;
6064 asection *section;
6065 asymbol **symbols;
6066 bfd_vma offset;
4e8a9624
AM		 6067 const char **filename_ptr;
6068 const char **functionname_ptr;
d1fad7c6
NC		 6069 unsigned int *line_ptr;
6070{
b34976b6 6071 bfd_boolean found;
d1fad7c6
NC		 6072
6073 if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset,
4e8a9624
AM		 6074 filename_ptr, functionname_ptr,
6075 line_ptr))
d1fad7c6
NC		 6076 {
6077 if (!*functionname_ptr)
4e8a9624
AM		 6078 elf_find_function (abfd, section, symbols, offset,
6079 *filename_ptr ? NULL : filename_ptr,
6080 functionname_ptr);
6081
b34976b6 6082 return TRUE;
d1fad7c6
NC		 6083 }
6084
6085 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
4e8a9624
AM		 6086 filename_ptr, functionname_ptr,
6087 line_ptr, 0,
6088 &elf_tdata (abfd)->dwarf2_find_line_info))
d1fad7c6
NC		 6089 {
6090 if (!*functionname_ptr)
4e8a9624
AM		 6091 elf_find_function (abfd, section, symbols, offset,
6092 *filename_ptr ? NULL : filename_ptr,
6093 functionname_ptr);
6094
b34976b6 6095 return TRUE;
d1fad7c6
NC		 6096 }
6097
6098 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
4e8a9624
AM		 6099 &found, filename_ptr,
6100 functionname_ptr, line_ptr,
6101 &elf_tdata (abfd)->line_info))
b34976b6 6102 return FALSE;
dc43ada5 6103 if (found && (*functionname_ptr || *line_ptr))
b34976b6 6104 return TRUE;
d1fad7c6
NC		 6105
6106 if (symbols == NULL)
b34976b6 6107 return FALSE;
d1fad7c6
NC		 6108
6109 if (! elf_find_function (abfd, section, symbols, offset,
4e8a9624 6110 filename_ptr, functionname_ptr))
b34976b6 6111 return FALSE;
d1fad7c6 6112
252b5132 6113 *line_ptr = 0;
b34976b6 6114 return TRUE;
252b5132
RH		 6115}
6116
6117int
6118_bfd_elf_sizeof_headers (abfd, reloc)
6119 bfd *abfd;
b34976b6 6120 bfd_boolean reloc;
252b5132
RH		 6121{
6122 int ret;
6123
6124 ret = get_elf_backend_data (abfd)->s->sizeof_ehdr;
6125 if (! reloc)
6126 ret += get_program_header_size (abfd);
6127 return ret;
6128}
6129
b34976b6 6130bfd_boolean
252b5132
RH		 6131_bfd_elf_set_section_contents (abfd, section, location, offset, count)
6132 bfd *abfd;
6133 sec_ptr section;
6134 PTR location;
6135 file_ptr offset;
6136 bfd_size_type count;
6137{
6138 Elf_Internal_Shdr *hdr;
dc810e39 6139 bfd_signed_vma pos;
252b5132
RH		 6140
6141 if (! abfd->output_has_begun
82e51918
AM		 6142 && ! (_bfd_elf_compute_section_file_positions
6143 (abfd, (struct bfd_link_info *) NULL)))
b34976b6 6144 return FALSE;
252b5132
RH		 6145
6146 hdr = &elf_section_data (section)->this_hdr;
dc810e39
AM		 6147 pos = hdr->sh_offset + offset;
6148 if (bfd_seek (abfd, pos, SEEK_SET) != 0
6149 || bfd_bwrite (location, count, abfd) != count)
b34976b6 6150 return FALSE;
252b5132 6151
b34976b6 6152 return TRUE;
252b5132
RH		 6153}
6154
6155void
6156_bfd_elf_no_info_to_howto (abfd, cache_ptr, dst)
7442e600
ILT		 6157 bfd *abfd ATTRIBUTE_UNUSED;
6158 arelent *cache_ptr ATTRIBUTE_UNUSED;
6159 Elf_Internal_Rela *dst ATTRIBUTE_UNUSED;
252b5132
RH		 6160{
6161 abort ();
6162}
6163
252b5132
RH		 6164/* Try to convert a non-ELF reloc into an ELF one. */
6165
b34976b6 6166bfd_boolean
252b5132
RH		 6167_bfd_elf_validate_reloc (abfd, areloc)
6168 bfd *abfd;
6169 arelent *areloc;
6170{
c044fabd 6171 /* Check whether we really have an ELF howto. */
252b5132
RH		 6172
6173 if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec)
6174 {
6175 bfd_reloc_code_real_type code;
6176 reloc_howto_type *howto;
6177
6178 /* Alien reloc: Try to determine its type to replace it with an
c044fabd 6179 equivalent ELF reloc. */
252b5132
RH		 6180
6181 if (areloc->howto->pc_relative)
6182 {
6183 switch (areloc->howto->bitsize)
6184 {
6185 case 8:
6186 code = BFD_RELOC_8_PCREL;
6187 break;
6188 case 12:
6189 code = BFD_RELOC_12_PCREL;
6190 break;
6191 case 16:
6192 code = BFD_RELOC_16_PCREL;
6193 break;
6194 case 24:
6195 code = BFD_RELOC_24_PCREL;
6196 break;
6197 case 32:
6198 code = BFD_RELOC_32_PCREL;
6199 break;
6200 case 64:
6201 code = BFD_RELOC_64_PCREL;
6202 break;
6203 default:
6204 goto fail;
6205 }
6206
6207 howto = bfd_reloc_type_lookup (abfd, code);
6208
6209 if (areloc->howto->pcrel_offset != howto->pcrel_offset)
6210 {
6211 if (howto->pcrel_offset)
6212 areloc->addend += areloc->address;
6213 else
6214 areloc->addend -= areloc->address; /* addend is unsigned!! */
6215 }
6216 }
6217 else
6218 {
6219 switch (areloc->howto->bitsize)
6220 {
6221 case 8:
6222 code = BFD_RELOC_8;
6223 break;
6224 case 14:
6225 code = BFD_RELOC_14;
6226 break;
6227 case 16:
6228 code = BFD_RELOC_16;
6229 break;
6230 case 26:
6231 code = BFD_RELOC_26;
6232 break;
6233 case 32:
6234 code = BFD_RELOC_32;
6235 break;
6236 case 64:
6237 code = BFD_RELOC_64;
6238 break;
6239 default:
6240 goto fail;
6241 }
6242
6243 howto = bfd_reloc_type_lookup (abfd, code);
6244 }
6245
6246 if (howto)
6247 areloc->howto = howto;
6248 else
6249 goto fail;
6250 }
6251
b34976b6 6252 return TRUE;
252b5132
RH		 6253
6254 fail:
6255 (*_bfd_error_handler)
6256 (_("%s: unsupported relocation type %s"),
8f615d07 6257 bfd_archive_filename (abfd), areloc->howto->name);
252b5132 6258 bfd_set_error (bfd_error_bad_value);
b34976b6 6259 return FALSE;
252b5132
RH		 6260}
6261
b34976b6 6262bfd_boolean
252b5132
RH		 6263_bfd_elf_close_and_cleanup (abfd)
6264 bfd *abfd;
6265{
6266 if (bfd_get_format (abfd) == bfd_object)
6267 {
6268 if (elf_shstrtab (abfd) != NULL)
2b0f7ef9 6269 _bfd_elf_strtab_free (elf_shstrtab (abfd));
252b5132
RH		 6270 }
6271
6272 return _bfd_generic_close_and_cleanup (abfd);
6273}
6274
6275/* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY
6276 in the relocation's offset. Thus we cannot allow any sort of sanity
6277 range-checking to interfere. There is nothing else to do in processing
6278 this reloc. */
6279
6280bfd_reloc_status_type
6281_bfd_elf_rel_vtable_reloc_fn (abfd, re, symbol, data, is, obfd, errmsg)
7442e600
ILT		 6282 bfd *abfd ATTRIBUTE_UNUSED;
6283 arelent *re ATTRIBUTE_UNUSED;
6284 struct symbol_cache_entry *symbol ATTRIBUTE_UNUSED;
6285 PTR data ATTRIBUTE_UNUSED;
6286 asection *is ATTRIBUTE_UNUSED;
6287 bfd *obfd ATTRIBUTE_UNUSED;
6288 char **errmsg ATTRIBUTE_UNUSED;
252b5132
RH		 6289{
6290 return bfd_reloc_ok;
6291}
252b5132
RH		 6292\f
6293/* Elf core file support. Much of this only works on native
6294 toolchains, since we rely on knowing the
6295 machine-dependent procfs structure in order to pick
c044fabd 6296 out details about the corefile. */
252b5132
RH		 6297
6298#ifdef HAVE_SYS_PROCFS_H
6299# include <sys/procfs.h>
6300#endif
6301
c044fabd 6302/* FIXME: this is kinda wrong, but it's what gdb wants. */
252b5132
RH		 6303
6304static int
6305elfcore_make_pid (abfd)
c044fabd 6306 bfd *abfd;
252b5132
RH		 6307{
6308 return ((elf_tdata (abfd)->core_lwpid << 16)
6309 + (elf_tdata (abfd)->core_pid));
6310}
6311
252b5132
RH		 6312/* If there isn't a section called NAME, make one, using
6313 data from SECT. Note, this function will generate a
6314 reference to NAME, so you shouldn't deallocate or
c044fabd 6315 overwrite it. */
252b5132 6316
b34976b6 6317static bfd_boolean
252b5132 6318elfcore_maybe_make_sect (abfd, name, sect)
c044fabd
KH		 6319 bfd *abfd;
6320 char *name;
6321 asection *sect;
252b5132 6322{
c044fabd 6323 asection *sect2;
252b5132
RH		 6324
6325 if (bfd_get_section_by_name (abfd, name) != NULL)
b34976b6 6326 return TRUE;
252b5132
RH		 6327
6328 sect2 = bfd_make_section (abfd, name);
6329 if (sect2 == NULL)
b34976b6 6330 return FALSE;
252b5132
RH		 6331
6332 sect2->_raw_size = sect->_raw_size;
6333 sect2->filepos = sect->filepos;
6334 sect2->flags = sect->flags;
6335 sect2->alignment_power = sect->alignment_power;
b34976b6 6336 return TRUE;
252b5132
RH		 6337}
6338
bb0082d6
AM		 6339/* Create a pseudosection containing SIZE bytes at FILEPOS. This
6340 actually creates up to two pseudosections:
6341 - For the single-threaded case, a section named NAME, unless
6342 such a section already exists.
6343 - For the multi-threaded case, a section named "NAME/PID", where
6344 PID is elfcore_make_pid (abfd).
6345 Both pseudosections have identical contents. */
b34976b6 6346bfd_boolean
bb0082d6
AM		 6347_bfd_elfcore_make_pseudosection (abfd, name, size, filepos)
6348 bfd *abfd;
6349 char *name;
dc810e39
AM		 6350 size_t size;
6351 ufile_ptr filepos;
bb0082d6
AM		 6352{
6353 char buf[100];
6354 char *threaded_name;
d4c88bbb 6355 size_t len;
bb0082d6
AM		 6356 asection *sect;
6357
6358 /* Build the section name. */
6359
6360 sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd));
d4c88bbb
AM		 6361 len = strlen (buf) + 1;
6362 threaded_name = bfd_alloc (abfd, (bfd_size_type) len);
bb0082d6 6363 if (threaded_name == NULL)
b34976b6 6364 return FALSE;
d4c88bbb 6365 memcpy (threaded_name, buf, len);
bb0082d6
AM		 6366
6367 sect = bfd_make_section (abfd, threaded_name);
6368 if (sect == NULL)
b34976b6 6369 return FALSE;
bb0082d6
AM		 6370 sect->_raw_size = size;
6371 sect->filepos = filepos;
6372 sect->flags = SEC_HAS_CONTENTS;
6373 sect->alignment_power = 2;
6374
936e320b 6375 return elfcore_maybe_make_sect (abfd, name, sect);
bb0082d6
AM		 6376}
6377
252b5132 6378/* prstatus_t exists on:
4a938328 6379 solaris 2.5+
252b5132
RH		 6380 linux 2.[01] + glibc
6381 unixware 4.2
6382*/
6383
6384#if defined (HAVE_PRSTATUS_T)
b34976b6
AM		 6385static bfd_boolean elfcore_grok_prstatus
6386 PARAMS ((bfd *, Elf_Internal_Note *));
a7b97311 6387
b34976b6 6388static bfd_boolean
252b5132 6389elfcore_grok_prstatus (abfd, note)
c044fabd
KH		 6390 bfd *abfd;
6391 Elf_Internal_Note *note;
252b5132 6392{
dc810e39 6393 size_t raw_size;
7ee38065 6394 int offset;
252b5132 6395
4a938328
MS		 6396 if (note->descsz == sizeof (prstatus_t))
6397 {
6398 prstatus_t prstat;
252b5132 6399
e0ebfc61 6400 raw_size = sizeof (prstat.pr_reg);
7ee38065 6401 offset = offsetof (prstatus_t, pr_reg);
4a938328 6402 memcpy (&prstat, note->descdata, sizeof (prstat));
252b5132 6403
fa49d224
NC		 6404 /* Do not overwrite the core signal if it
6405 has already been set by another thread. */
6406 if (elf_tdata (abfd)->core_signal == 0)
6407 elf_tdata (abfd)->core_signal = prstat.pr_cursig;
4a938328 6408 elf_tdata (abfd)->core_pid = prstat.pr_pid;
252b5132 6409
4a938328
MS		 6410 /* pr_who exists on:
6411 solaris 2.5+
6412 unixware 4.2
6413 pr_who doesn't exist on:
6414 linux 2.[01]
6415 */
252b5132 6416#if defined (HAVE_PRSTATUS_T_PR_WHO)
4a938328 6417 elf_tdata (abfd)->core_lwpid = prstat.pr_who;
252b5132 6418#endif
4a938328 6419 }
7ee38065 6420#if defined (HAVE_PRSTATUS32_T)
4a938328
MS		 6421 else if (note->descsz == sizeof (prstatus32_t))
6422 {
6423 /* 64-bit host, 32-bit corefile */
6424 prstatus32_t prstat;
6425
e0ebfc61 6426 raw_size = sizeof (prstat.pr_reg);
7ee38065 6427 offset = offsetof (prstatus32_t, pr_reg);
4a938328
MS		 6428 memcpy (&prstat, note->descdata, sizeof (prstat));
6429
fa49d224
NC		 6430 /* Do not overwrite the core signal if it
6431 has already been set by another thread. */
6432 if (elf_tdata (abfd)->core_signal == 0)
6433 elf_tdata (abfd)->core_signal = prstat.pr_cursig;
4a938328
MS		 6434 elf_tdata (abfd)->core_pid = prstat.pr_pid;
6435
6436 /* pr_who exists on:
6437 solaris 2.5+
6438 unixware 4.2
6439 pr_who doesn't exist on:
6440 linux 2.[01]
6441 */
7ee38065 6442#if defined (HAVE_PRSTATUS32_T_PR_WHO)
4a938328
MS		 6443 elf_tdata (abfd)->core_lwpid = prstat.pr_who;
6444#endif
6445 }
7ee38065 6446#endif /* HAVE_PRSTATUS32_T */
4a938328
MS		 6447 else
6448 {
6449 /* Fail - we don't know how to handle any other
6450 note size (ie. data object type). */
b34976b6 6451 return TRUE;
4a938328 6452 }
252b5132 6453
bb0082d6 6454 /* Make a ".reg/999" section and a ".reg" section. */
936e320b
AM		 6455 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
6456 raw_size, note->descpos + offset);
252b5132
RH		 6457}
6458#endif /* defined (HAVE_PRSTATUS_T) */
6459
bb0082d6 6460/* Create a pseudosection containing the exact contents of NOTE. */
b34976b6 6461static bfd_boolean
ff08c6bb 6462elfcore_make_note_pseudosection (abfd, name, note)
c044fabd 6463 bfd *abfd;
ff08c6bb 6464 char *name;
c044fabd 6465 Elf_Internal_Note *note;
252b5132 6466{
936e320b
AM		 6467 return _bfd_elfcore_make_pseudosection (abfd, name,
6468 note->descsz, note->descpos);
252b5132
RH		 6469}
6470
ff08c6bb
JB		 6471/* There isn't a consistent prfpregset_t across platforms,
6472 but it doesn't matter, because we don't have to pick this
c044fabd
KH		 6473 data structure apart. */
6474
b34976b6 6475static bfd_boolean
ff08c6bb 6476elfcore_grok_prfpreg (abfd, note)
c044fabd
KH		 6477 bfd *abfd;
6478 Elf_Internal_Note *note;
ff08c6bb
JB		 6479{
6480 return elfcore_make_note_pseudosection (abfd, ".reg2", note);
6481}
6482
ff08c6bb
JB		 6483/* Linux dumps the Intel SSE regs in a note named "LINUX" with a note
6484 type of 5 (NT_PRXFPREG). Just include the whole note's contents
6485 literally. */
c044fabd 6486
b34976b6 6487static bfd_boolean
ff08c6bb 6488elfcore_grok_prxfpreg (abfd, note)
c044fabd
KH		 6489 bfd *abfd;
6490 Elf_Internal_Note *note;
ff08c6bb
JB		 6491{
6492 return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note);
6493}
6494
252b5132 6495#if defined (HAVE_PRPSINFO_T)
4a938328 6496typedef prpsinfo_t elfcore_psinfo_t;
7ee38065 6497#if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */
4a938328
MS		 6498typedef prpsinfo32_t elfcore_psinfo32_t;
6499#endif
252b5132
RH		 6500#endif
6501
6502#if defined (HAVE_PSINFO_T)
4a938328 6503typedef psinfo_t elfcore_psinfo_t;
7ee38065 6504#if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */
4a938328
MS		 6505typedef psinfo32_t elfcore_psinfo32_t;
6506#endif
252b5132
RH		 6507#endif
6508
252b5132
RH		 6509/* return a malloc'ed copy of a string at START which is at
6510 most MAX bytes long, possibly without a terminating '\0'.
c044fabd 6511 the copy will always have a terminating '\0'. */
252b5132 6512
936e320b 6513char *
bb0082d6 6514_bfd_elfcore_strndup (abfd, start, max)
c044fabd
KH		 6515 bfd *abfd;
6516 char *start;
dc810e39 6517 size_t max;
252b5132 6518{
dc810e39 6519 char *dups;
c044fabd 6520 char *end = memchr (start, '\0', max);
dc810e39 6521 size_t len;
252b5132
RH		 6522
6523 if (end == NULL)
6524 len = max;
6525 else
6526 len = end - start;
6527
dc810e39
AM		 6528 dups = bfd_alloc (abfd, (bfd_size_type) len + 1);
6529 if (dups == NULL)
252b5132
RH		 6530 return NULL;
6531
dc810e39
AM		 6532 memcpy (dups, start, len);
6533 dups[len] = '\0';
252b5132 6534
dc810e39 6535 return dups;
252b5132
RH		 6536}
6537
bb0082d6 6538#if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
b34976b6
AM		 6539static bfd_boolean elfcore_grok_psinfo
6540 PARAMS ((bfd *, Elf_Internal_Note *));
bb0082d6 6541
b34976b6 6542static bfd_boolean
252b5132 6543elfcore_grok_psinfo (abfd, note)
c044fabd
KH		 6544 bfd *abfd;
6545 Elf_Internal_Note *note;
252b5132 6546{
4a938328
MS		 6547 if (note->descsz == sizeof (elfcore_psinfo_t))
6548 {
6549 elfcore_psinfo_t psinfo;
252b5132 6550
7ee38065 6551 memcpy (&psinfo, note->descdata, sizeof (psinfo));
252b5132 6552
4a938328 6553 elf_tdata (abfd)->core_program
936e320b
AM		 6554 = _bfd_elfcore_strndup (abfd, psinfo.pr_fname,
6555 sizeof (psinfo.pr_fname));
252b5132 6556
4a938328 6557 elf_tdata (abfd)->core_command
936e320b
AM		 6558 = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs,
6559 sizeof (psinfo.pr_psargs));
4a938328 6560 }
7ee38065 6561#if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T)
4a938328
MS		 6562 else if (note->descsz == sizeof (elfcore_psinfo32_t))
6563 {
6564 /* 64-bit host, 32-bit corefile */
6565 elfcore_psinfo32_t psinfo;
6566
7ee38065 6567 memcpy (&psinfo, note->descdata, sizeof (psinfo));
252b5132 6568
4a938328 6569 elf_tdata (abfd)->core_program
936e320b
AM		 6570 = _bfd_elfcore_strndup (abfd, psinfo.pr_fname,
6571 sizeof (psinfo.pr_fname));
4a938328
MS		 6572
6573 elf_tdata (abfd)->core_command
936e320b
AM		 6574 = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs,
6575 sizeof (psinfo.pr_psargs));
4a938328
MS		 6576 }
6577#endif
6578
6579 else
6580 {
6581 /* Fail - we don't know how to handle any other
6582 note size (ie. data object type). */
b34976b6 6583 return TRUE;
4a938328 6584 }
252b5132
RH		 6585
6586 /* Note that for some reason, a spurious space is tacked
6587 onto the end of the args in some (at least one anyway)
c044fabd 6588 implementations, so strip it off if it exists. */
252b5132
RH		 6589
6590 {
c044fabd 6591 char *command = elf_tdata (abfd)->core_command;
252b5132
RH		 6592 int n = strlen (command);
6593
6594 if (0 < n && command[n - 1] == ' ')
6595 command[n - 1] = '\0';
6596 }
6597
b34976b6 6598 return TRUE;
252b5132
RH		 6599}
6600#endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */
6601
252b5132 6602#if defined (HAVE_PSTATUS_T)
b34976b6
AM		 6603static bfd_boolean elfcore_grok_pstatus
6604 PARAMS ((bfd *, Elf_Internal_Note *));
51316059 6605
b34976b6 6606static bfd_boolean
252b5132 6607elfcore_grok_pstatus (abfd, note)
c044fabd
KH		 6608 bfd *abfd;
6609 Elf_Internal_Note *note;
252b5132 6610{
f572a39d
AM		 6611 if (note->descsz == sizeof (pstatus_t)
6612#if defined (HAVE_PXSTATUS_T)
6613 || note->descsz == sizeof (pxstatus_t)
6614#endif
6615 )
4a938328
MS		 6616 {
6617 pstatus_t pstat;
252b5132 6618
4a938328 6619 memcpy (&pstat, note->descdata, sizeof (pstat));
252b5132 6620
4a938328
MS		 6621 elf_tdata (abfd)->core_pid = pstat.pr_pid;
6622 }
7ee38065 6623#if defined (HAVE_PSTATUS32_T)
4a938328
MS		 6624 else if (note->descsz == sizeof (pstatus32_t))
6625 {
6626 /* 64-bit host, 32-bit corefile */
6627 pstatus32_t pstat;
252b5132 6628
4a938328 6629 memcpy (&pstat, note->descdata, sizeof (pstat));
252b5132 6630
4a938328
MS		 6631 elf_tdata (abfd)->core_pid = pstat.pr_pid;
6632 }
6633#endif
252b5132
RH		 6634 /* Could grab some more details from the "representative"
6635 lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an
c044fabd 6636 NT_LWPSTATUS note, presumably. */
252b5132 6637
b34976b6 6638 return TRUE;
252b5132
RH		 6639}
6640#endif /* defined (HAVE_PSTATUS_T) */
6641
252b5132 6642#if defined (HAVE_LWPSTATUS_T)
b34976b6
AM		 6643static bfd_boolean elfcore_grok_lwpstatus
6644 PARAMS ((bfd *, Elf_Internal_Note *));
51316059 6645
b34976b6 6646static bfd_boolean
252b5132 6647elfcore_grok_lwpstatus (abfd, note)
c044fabd
KH		 6648 bfd *abfd;
6649 Elf_Internal_Note *note;
252b5132
RH		 6650{
6651 lwpstatus_t lwpstat;
6652 char buf[100];
c044fabd 6653 char *name;
d4c88bbb 6654 size_t len;
c044fabd 6655 asection *sect;
252b5132 6656
f572a39d
AM		 6657 if (note->descsz != sizeof (lwpstat)
6658#if defined (HAVE_LWPXSTATUS_T)
6659 && note->descsz != sizeof (lwpxstatus_t)
6660#endif
6661 )
b34976b6 6662 return TRUE;
252b5132
RH		 6663
6664 memcpy (&lwpstat, note->descdata, sizeof (lwpstat));
6665
6666 elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid;
6667 elf_tdata (abfd)->core_signal = lwpstat.pr_cursig;
6668
c044fabd 6669 /* Make a ".reg/999" section. */
252b5132
RH		 6670
6671 sprintf (buf, ".reg/%d", elfcore_make_pid (abfd));
d4c88bbb
AM		 6672 len = strlen (buf) + 1;
6673 name = bfd_alloc (abfd, (bfd_size_type) len);
252b5132 6674 if (name == NULL)
b34976b6 6675 return FALSE;
d4c88bbb 6676 memcpy (name, buf, len);
252b5132
RH		 6677
6678 sect = bfd_make_section (abfd, name);
6679 if (sect == NULL)
b34976b6 6680 return FALSE;
252b5132
RH		 6681
6682#if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
6683 sect->_raw_size = sizeof (lwpstat.pr_context.uc_mcontext.gregs);
6684 sect->filepos = note->descpos
6685 + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs);
6686#endif
6687
6688#if defined (HAVE_LWPSTATUS_T_PR_REG)
6689 sect->_raw_size = sizeof (lwpstat.pr_reg);
6690 sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg);
6691#endif
6692
6693 sect->flags = SEC_HAS_CONTENTS;
6694 sect->alignment_power = 2;
6695
6696 if (!elfcore_maybe_make_sect (abfd, ".reg", sect))
b34976b6 6697 return FALSE;
252b5132
RH		 6698
6699 /* Make a ".reg2/999" section */
6700
6701 sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd));
d4c88bbb
AM		 6702 len = strlen (buf) + 1;
6703 name = bfd_alloc (abfd, (bfd_size_type) len);
252b5132 6704 if (name == NULL)
b34976b6 6705 return FALSE;
d4c88bbb 6706 memcpy (name, buf, len);
252b5132
RH		 6707
6708 sect = bfd_make_section (abfd, name);
6709 if (sect == NULL)
b34976b6 6710 return FALSE;
252b5132
RH		 6711
6712#if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
6713 sect->_raw_size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs);
6714 sect->filepos = note->descpos
6715 + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs);
6716#endif
6717
6718#if defined (HAVE_LWPSTATUS_T_PR_FPREG)
6719 sect->_raw_size = sizeof (lwpstat.pr_fpreg);
6720 sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg);
6721#endif
6722
6723 sect->flags = SEC_HAS_CONTENTS;
6724 sect->alignment_power = 2;
6725
936e320b 6726 return elfcore_maybe_make_sect (abfd, ".reg2", sect);
252b5132
RH		 6727}
6728#endif /* defined (HAVE_LWPSTATUS_T) */
6729
16e9c715 6730#if defined (HAVE_WIN32_PSTATUS_T)
b34976b6 6731static bfd_boolean
16e9c715 6732elfcore_grok_win32pstatus (abfd, note)
c044fabd
KH		 6733 bfd *abfd;
6734 Elf_Internal_Note *note;
16e9c715
NC		 6735{
6736 char buf[30];
c044fabd 6737 char *name;
d4c88bbb 6738 size_t len;
c044fabd 6739 asection *sect;
16e9c715
NC		 6740 win32_pstatus_t pstatus;
6741
6742 if (note->descsz < sizeof (pstatus))
b34976b6 6743 return TRUE;
16e9c715 6744
e8eab623 6745 memcpy (&pstatus, note->descdata, sizeof (pstatus));
c044fabd
KH		 6746
6747 switch (pstatus.data_type)
16e9c715
NC		 6748 {
6749 case NOTE_INFO_PROCESS:
6750 /* FIXME: need to add ->core_command. */
6751 elf_tdata (abfd)->core_signal = pstatus.data.process_info.signal;
6752 elf_tdata (abfd)->core_pid = pstatus.data.process_info.pid;
c044fabd 6753 break;
16e9c715
NC		 6754
6755 case NOTE_INFO_THREAD:
6756 /* Make a ".reg/999" section. */
6757 sprintf (buf, ".reg/%d", pstatus.data.thread_info.tid);
c044fabd 6758
d4c88bbb
AM		 6759 len = strlen (buf) + 1;
6760 name = bfd_alloc (abfd, (bfd_size_type) len);
16e9c715 6761 if (name == NULL)
b34976b6 6762 return FALSE;
c044fabd 6763
d4c88bbb 6764 memcpy (name, buf, len);
16e9c715
NC		 6765
6766 sect = bfd_make_section (abfd, name);
6767 if (sect == NULL)
b34976b6 6768 return FALSE;
c044fabd 6769
16e9c715 6770 sect->_raw_size = sizeof (pstatus.data.thread_info.thread_context);
079e9a2f
AM		 6771 sect->filepos = (note->descpos
6772 + offsetof (struct win32_pstatus,
6773 data.thread_info.thread_context));
16e9c715
NC		 6774 sect->flags = SEC_HAS_CONTENTS;
6775 sect->alignment_power = 2;
6776
6777 if (pstatus.data.thread_info.is_active_thread)
6778 if (! elfcore_maybe_make_sect (abfd, ".reg", sect))
b34976b6 6779 return FALSE;
16e9c715
NC		 6780 break;
6781
6782 case NOTE_INFO_MODULE:
6783 /* Make a ".module/xxxxxxxx" section. */
c044fabd
KH		 6784 sprintf (buf, ".module/%08x", pstatus.data.module_info.base_address);
6785
d4c88bbb
AM		 6786 len = strlen (buf) + 1;
6787 name = bfd_alloc (abfd, (bfd_size_type) len);
16e9c715 6788 if (name == NULL)
b34976b6 6789 return FALSE;
c044fabd 6790
d4c88bbb 6791 memcpy (name, buf, len);
252b5132 6792
16e9c715 6793 sect = bfd_make_section (abfd, name);
c044fabd 6794
16e9c715 6795 if (sect == NULL)
b34976b6 6796 return FALSE;
c044fabd 6797
16e9c715
NC		 6798 sect->_raw_size = note->descsz;
6799 sect->filepos = note->descpos;
6800 sect->flags = SEC_HAS_CONTENTS;
6801 sect->alignment_power = 2;
6802 break;
6803
6804 default:
b34976b6 6805 return TRUE;
16e9c715
NC		 6806 }
6807
b34976b6 6808 return TRUE;
16e9c715
NC		 6809}
6810#endif /* HAVE_WIN32_PSTATUS_T */
252b5132 6811
b34976b6 6812static bfd_boolean
252b5132 6813elfcore_grok_note (abfd, note)
c044fabd
KH		 6814 bfd *abfd;
6815 Elf_Internal_Note *note;
252b5132 6816{
bb0082d6
AM		 6817 struct elf_backend_data *bed = get_elf_backend_data (abfd);
6818
252b5132
RH		 6819 switch (note->type)
6820 {
6821 default:
b34976b6 6822 return TRUE;
252b5132 6823
252b5132 6824 case NT_PRSTATUS:
bb0082d6
AM		 6825 if (bed->elf_backend_grok_prstatus)
6826 if ((*bed->elf_backend_grok_prstatus) (abfd, note))
b34976b6 6827 return TRUE;
bb0082d6 6828#if defined (HAVE_PRSTATUS_T)
252b5132 6829 return elfcore_grok_prstatus (abfd, note);
bb0082d6 6830#else
b34976b6 6831 return TRUE;
252b5132
RH		 6832#endif
6833
6834#if defined (HAVE_PSTATUS_T)
6835 case NT_PSTATUS:
6836 return elfcore_grok_pstatus (abfd, note);
6837#endif
6838
6839#if defined (HAVE_LWPSTATUS_T)
6840 case NT_LWPSTATUS:
6841 return elfcore_grok_lwpstatus (abfd, note);
6842#endif
6843
6844 case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */
6845 return elfcore_grok_prfpreg (abfd, note);
6846
16e9c715 6847#if defined (HAVE_WIN32_PSTATUS_T)
c044fabd 6848 case NT_WIN32PSTATUS:
16e9c715
NC		 6849 return elfcore_grok_win32pstatus (abfd, note);
6850#endif
6851
c044fabd 6852 case NT_PRXFPREG: /* Linux SSE extension */
e377ab71
MK		 6853 if (note->namesz == 6
6854 && strcmp (note->namedata, "LINUX") == 0)
ff08c6bb
JB		 6855 return elfcore_grok_prxfpreg (abfd, note);
6856 else
b34976b6 6857 return TRUE;
ff08c6bb 6858
252b5132
RH		 6859 case NT_PRPSINFO:
6860 case NT_PSINFO:
bb0082d6
AM		 6861 if (bed->elf_backend_grok_psinfo)
6862 if ((*bed->elf_backend_grok_psinfo) (abfd, note))
b34976b6 6863 return TRUE;
bb0082d6 6864#if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
252b5132 6865 return elfcore_grok_psinfo (abfd, note);
bb0082d6 6866#else
b34976b6 6867 return TRUE;
252b5132
RH		 6868#endif
6869 }
6870}
6871
b34976b6 6872static bfd_boolean
50b2bdb7
AM		 6873elfcore_netbsd_get_lwpid (note, lwpidp)
6874 Elf_Internal_Note *note;
6875 int *lwpidp;
6876{
6877 char *cp;
6878
6879 cp = strchr (note->namedata, '@');
6880 if (cp != NULL)
6881 {
d2b64500 6882 *lwpidp = atoi(cp + 1);
b34976b6 6883 return TRUE;
50b2bdb7 6884 }
b34976b6 6885 return FALSE;
50b2bdb7
AM		 6886}
6887
b34976b6 6888static bfd_boolean
50b2bdb7
AM		 6889elfcore_grok_netbsd_procinfo (abfd, note)
6890 bfd *abfd;
6891 Elf_Internal_Note *note;
6892{
6893
6894 /* Signal number at offset 0x08. */
6895 elf_tdata (abfd)->core_signal
6896 = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08);
6897
6898 /* Process ID at offset 0x50. */
6899 elf_tdata (abfd)->core_pid
6900 = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50);
6901
6902 /* Command name at 0x7c (max 32 bytes, including nul). */
6903 elf_tdata (abfd)->core_command
6904 = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31);
6905
b34976b6 6906 return TRUE;
50b2bdb7
AM		 6907}
6908
b34976b6 6909static bfd_boolean
50b2bdb7
AM		 6910elfcore_grok_netbsd_note (abfd, note)
6911 bfd *abfd;
6912 Elf_Internal_Note *note;
6913{
6914 int lwp;
6915
6916 if (elfcore_netbsd_get_lwpid (note, &lwp))
6917 elf_tdata (abfd)->core_lwpid = lwp;
6918
b4db1224 6919 if (note->type == NT_NETBSDCORE_PROCINFO)
50b2bdb7
AM		 6920 {
6921 /* NetBSD-specific core "procinfo". Note that we expect to
6922 find this note before any of the others, which is fine,
6923 since the kernel writes this note out first when it
6924 creates a core file. */
47d9a591 6925
50b2bdb7
AM		 6926 return elfcore_grok_netbsd_procinfo (abfd, note);
6927 }
6928
b4db1224
JT		 6929 /* As of Jan 2002 there are no other machine-independent notes
6930 defined for NetBSD core files. If the note type is less
6931 than the start of the machine-dependent note types, we don't
6932 understand it. */
47d9a591 6933
b4db1224 6934 if (note->type < NT_NETBSDCORE_FIRSTMACH)
b34976b6 6935 return TRUE;
50b2bdb7
AM		 6936
6937
6938 switch (bfd_get_arch (abfd))
6939 {
6940 /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and
6941 PT_GETFPREGS == mach+2. */
6942
6943 case bfd_arch_alpha:
6944 case bfd_arch_sparc:
6945 switch (note->type)
6946 {
b4db1224 6947 case NT_NETBSDCORE_FIRSTMACH+0:
50b2bdb7
AM		 6948 return elfcore_make_note_pseudosection (abfd, ".reg", note);
6949
b4db1224 6950 case NT_NETBSDCORE_FIRSTMACH+2:
50b2bdb7
AM		 6951 return elfcore_make_note_pseudosection (abfd, ".reg2", note);
6952
6953 default:
b34976b6 6954 return TRUE;
50b2bdb7
AM		 6955 }
6956
6957 /* On all other arch's, PT_GETREGS == mach+1 and
6958 PT_GETFPREGS == mach+3. */
6959
6960 default:
6961 switch (note->type)
6962 {
b4db1224 6963 case NT_NETBSDCORE_FIRSTMACH+1:
50b2bdb7
AM		 6964 return elfcore_make_note_pseudosection (abfd, ".reg", note);
6965
b4db1224 6966 case NT_NETBSDCORE_FIRSTMACH+3:
50b2bdb7
AM		 6967 return elfcore_make_note_pseudosection (abfd, ".reg2", note);
6968
6969 default:
b34976b6 6970 return TRUE;
50b2bdb7
AM		 6971 }
6972 }
6973 /* NOTREACHED */
6974}
6975
07c6e936
NC		 6976static bfd_boolean
6977elfcore_grok_nto_status (abfd, note, tid)
6978 bfd *abfd;
6979 Elf_Internal_Note *note;
6980 pid_t *tid;
6981{
6982 void *ddata = note->descdata;
6983 char buf[100];
6984 char *name;
6985 asection *sect;
6986
6987 /* nto_procfs_status 'pid' field is at offset 0. */
6988 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, (bfd_byte *) ddata);
6989
6990 /* nto_procfs_status 'tid' field is at offset 4. */
6991 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, (bfd_byte *) ddata + 4);
6992
6993 /* nto_procfs_status 'what' field is at offset 14. */
6994 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, (bfd_byte *) ddata + 14);
6995
6996 /* Pass tid back. */
6997 *tid = elf_tdata (abfd)->core_lwpid;
6998
6999 /* Make a ".qnx_core_status/%d" section. */
7000 sprintf (buf, ".qnx_core_status/%d", *tid);
7001
7002 name = bfd_alloc (abfd, (bfd_size_type) strlen (buf) + 1);
7003 if (name == NULL)
7004 return FALSE;
7005 strcpy (name, buf);
7006
7007 sect = bfd_make_section (abfd, name);
7008 if (sect == NULL)
7009 return FALSE;
7010
7011 sect->_raw_size = note->descsz;
7012 sect->filepos = note->descpos;
7013 sect->flags = SEC_HAS_CONTENTS;
7014 sect->alignment_power = 2;
7015
7016 return (elfcore_maybe_make_sect (abfd, ".qnx_core_status", sect));
7017}
7018
7019static bfd_boolean
7020elfcore_grok_nto_gregs (abfd, note, tid)
7021 bfd *abfd;
7022 Elf_Internal_Note *note;
7023 pid_t tid;
7024{
7025 char buf[100];
7026 char *name;
7027 asection *sect;
7028
7029 /* Make a ".reg/%d" section. */
7030 sprintf (buf, ".reg/%d", tid);
7031
7032 name = bfd_alloc (abfd, (bfd_size_type) strlen (buf) + 1);
7033 if (name == NULL)
7034 return FALSE;
7035 strcpy (name, buf);
7036
7037 sect = bfd_make_section (abfd, name);
7038 if (sect == NULL)
7039 return FALSE;
7040
7041 sect->_raw_size = note->descsz;
7042 sect->filepos = note->descpos;
7043 sect->flags = SEC_HAS_CONTENTS;
7044 sect->alignment_power = 2;
7045
7046 return elfcore_maybe_make_sect (abfd, ".reg", sect);
7047}
7048
7049#define BFD_QNT_CORE_INFO 7
7050#define BFD_QNT_CORE_STATUS 8
7051#define BFD_QNT_CORE_GREG 9
7052#define BFD_QNT_CORE_FPREG 10
7053
7054static bfd_boolean
7055elfcore_grok_nto_note (abfd, note)
7056 bfd *abfd;
7057 Elf_Internal_Note *note;
7058{
7059 /* Every GREG section has a STATUS section before it. Store the
7060 tid from the previous call to pass down to the next gregs
7061 function. */
7062 static pid_t tid = 1;
7063
7064 switch (note->type)
7065 {
7066 case BFD_QNT_CORE_INFO: return elfcore_make_note_pseudosection (abfd, ".qnx_core_info", note);
7067 case BFD_QNT_CORE_STATUS: return elfcore_grok_nto_status (abfd, note, &tid);
7068 case BFD_QNT_CORE_GREG: return elfcore_grok_nto_gregs (abfd, note, tid);
7069 case BFD_QNT_CORE_FPREG: return elfcore_grok_prfpreg (abfd, note);
7070 default: return TRUE;
7071 }
7072}
7073
7c76fa91
MS		 7074/* Function: elfcore_write_note
7075
47d9a591 7076 Inputs:
7c76fa91
MS		 7077 buffer to hold note
7078 name of note
7079 type of note
7080 data for note
7081 size of data for note
7082
7083 Return:
7084 End of buffer containing note. */
7085
7086char *
7087elfcore_write_note (abfd, buf, bufsiz, name, type, input, size)
7088 bfd *abfd;
7089 char *buf;
7090 int *bufsiz;
d4c88bbb 7091 const char *name;
7c76fa91 7092 int type;
d4c88bbb 7093 const PTR input;
7c76fa91
MS		 7094 int size;
7095{
7096 Elf_External_Note *xnp;
d4c88bbb
AM		 7097 size_t namesz;
7098 size_t pad;
7099 size_t newspace;
7c76fa91
MS		 7100 char *p, *dest;
7101
d4c88bbb
AM		 7102 namesz = 0;
7103 pad = 0;
7104 if (name != NULL)
7105 {
7106 struct elf_backend_data *bed;
7107
7108 namesz = strlen (name) + 1;
7109 bed = get_elf_backend_data (abfd);
7110 pad = -namesz & (bed->s->file_align - 1);
7111 }
7112
7113 newspace = sizeof (Elf_External_Note) - 1 + namesz + pad + size;
7114
7c76fa91
MS		 7115 p = realloc (buf, *bufsiz + newspace);
7116 dest = p + *bufsiz;
7117 *bufsiz += newspace;
7118 xnp = (Elf_External_Note *) dest;
7119 H_PUT_32 (abfd, namesz, xnp->namesz);
7120 H_PUT_32 (abfd, size, xnp->descsz);
7121 H_PUT_32 (abfd, type, xnp->type);
d4c88bbb
AM		 7122 dest = xnp->name;
7123 if (name != NULL)
7124 {
7125 memcpy (dest, name, namesz);
7126 dest += namesz;
7127 while (pad != 0)
7128 {
7129 *dest++ = '\0';
7130 --pad;
7131 }
7132 }
7133 memcpy (dest, input, size);
7c76fa91
MS		 7134 return p;
7135}
7136
7137#if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
7138char *
7139elfcore_write_prpsinfo (abfd, buf, bufsiz, fname, psargs)
7140 bfd *abfd;
7141 char *buf;
7142 int *bufsiz;
47d9a591 7143 const char *fname;
d4c88bbb 7144 const char *psargs;
7c76fa91
MS		 7145{
7146 int note_type;
7147 char *note_name = "CORE";
7148
7149#if defined (HAVE_PSINFO_T)
7150 psinfo_t data;
7151 note_type = NT_PSINFO;
7152#else
7153 prpsinfo_t data;
7154 note_type = NT_PRPSINFO;
7155#endif
7156
7157 memset (&data, 0, sizeof (data));
7158 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
7159 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
47d9a591 7160 return elfcore_write_note (abfd, buf, bufsiz,
7c76fa91
MS		 7161 note_name, note_type, &data, sizeof (data));
7162}
7163#endif /* PSINFO_T or PRPSINFO_T */
7164
7165#if defined (HAVE_PRSTATUS_T)
7166char *
7167elfcore_write_prstatus (abfd, buf, bufsiz, pid, cursig, gregs)
7168 bfd *abfd;
7169 char *buf;
7170 int *bufsiz;
b87011e9 7171 long pid;
7c76fa91 7172 int cursig;
d4c88bbb 7173 const PTR gregs;
7c76fa91
MS		 7174{
7175 prstatus_t prstat;
7176 char *note_name = "CORE";
7177
7178 memset (&prstat, 0, sizeof (prstat));
7179 prstat.pr_pid = pid;
7180 prstat.pr_cursig = cursig;
c106e334 7181 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
47d9a591 7182 return elfcore_write_note (abfd, buf, bufsiz,
7c76fa91
MS		 7183 note_name, NT_PRSTATUS, &prstat, sizeof (prstat));
7184}
7185#endif /* HAVE_PRSTATUS_T */
7186
51316059
MS		 7187#if defined (HAVE_LWPSTATUS_T)
7188char *
7189elfcore_write_lwpstatus (abfd, buf, bufsiz, pid, cursig, gregs)
7190 bfd *abfd;
7191 char *buf;
7192 int *bufsiz;
7193 long pid;
7194 int cursig;
d4c88bbb 7195 const PTR gregs;
51316059
MS		 7196{
7197 lwpstatus_t lwpstat;
7198 char *note_name = "CORE";
7199
7200 memset (&lwpstat, 0, sizeof (lwpstat));
7201 lwpstat.pr_lwpid = pid >> 16;
7202 lwpstat.pr_cursig = cursig;
7203#if defined (HAVE_LWPSTATUS_T_PR_REG)
7204 memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg));
7205#elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
7206#if !defined(gregs)
7207 memcpy (lwpstat.pr_context.uc_mcontext.gregs,
7208 gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs));
7209#else
7210 memcpy (lwpstat.pr_context.uc_mcontext.__gregs,
7211 gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs));
7212#endif
7213#endif
47d9a591 7214 return elfcore_write_note (abfd, buf, bufsiz, note_name,
51316059
MS		 7215 NT_LWPSTATUS, &lwpstat, sizeof (lwpstat));
7216}
7217#endif /* HAVE_LWPSTATUS_T */
7218
7c76fa91
MS		 7219#if defined (HAVE_PSTATUS_T)
7220char *
7221elfcore_write_pstatus (abfd, buf, bufsiz, pid, cursig, gregs)
7222 bfd *abfd;
7223 char *buf;
7224 int *bufsiz;
b87011e9 7225 long pid;
7c76fa91 7226 int cursig;
d4c88bbb 7227 const PTR gregs;
7c76fa91
MS		 7228{
7229 pstatus_t pstat;
7230 char *note_name = "CORE";
7231
51316059
MS		 7232 memset (&pstat, 0, sizeof (pstat));
7233 pstat.pr_pid = pid & 0xffff;
47d9a591 7234 buf = elfcore_write_note (abfd, buf, bufsiz, note_name,
51316059
MS		 7235 NT_PSTATUS, &pstat, sizeof (pstat));
7236 return buf;
7c76fa91
MS		 7237}
7238#endif /* HAVE_PSTATUS_T */
7239
7240char *
7241elfcore_write_prfpreg (abfd, buf, bufsiz, fpregs, size)
7242 bfd *abfd;
7243 char *buf;
7244 int *bufsiz;
d4c88bbb 7245 const PTR fpregs;
7c76fa91
MS		 7246 int size;
7247{
7248 char *note_name = "CORE";
47d9a591 7249 return elfcore_write_note (abfd, buf, bufsiz,
7c76fa91
MS		 7250 note_name, NT_FPREGSET, fpregs, size);
7251}
7252
7253char *
7254elfcore_write_prxfpreg (abfd, buf, bufsiz, xfpregs, size)
7255 bfd *abfd;
7256 char *buf;
7257 int *bufsiz;
d4c88bbb 7258 const PTR xfpregs;
7c76fa91
MS		 7259 int size;
7260{
7261 char *note_name = "LINUX";
47d9a591 7262 return elfcore_write_note (abfd, buf, bufsiz,
7c76fa91
MS		 7263 note_name, NT_PRXFPREG, xfpregs, size);
7264}
7265
b34976b6 7266static bfd_boolean
252b5132 7267elfcore_read_notes (abfd, offset, size)
c044fabd 7268 bfd *abfd;
dc810e39
AM		 7269 file_ptr offset;
7270 bfd_size_type size;
252b5132 7271{
c044fabd
KH		 7272 char *buf;
7273 char *p;
252b5132
RH		 7274
7275 if (size <= 0)
b34976b6 7276 return TRUE;
252b5132 7277
dc810e39 7278 if (bfd_seek (abfd, offset, SEEK_SET) != 0)
b34976b6 7279 return FALSE;
252b5132 7280
dc810e39 7281 buf = bfd_malloc (size);
252b5132 7282 if (buf == NULL)
b34976b6 7283 return FALSE;
252b5132 7284
dc810e39 7285 if (bfd_bread (buf, size, abfd) != size)
252b5132
RH		 7286 {
7287 error:
7288 free (buf);
b34976b6 7289 return FALSE;
252b5132
RH		 7290 }
7291
7292 p = buf;
7293 while (p < buf + size)
7294 {
c044fabd
KH		 7295 /* FIXME: bad alignment assumption. */
7296 Elf_External_Note *xnp = (Elf_External_Note *) p;
252b5132
RH		 7297 Elf_Internal_Note in;
7298
dc810e39 7299 in.type = H_GET_32 (abfd, xnp->type);
252b5132 7300
dc810e39 7301 in.namesz = H_GET_32 (abfd, xnp->namesz);
252b5132
RH		 7302 in.namedata = xnp->name;
7303
dc810e39 7304 in.descsz = H_GET_32 (abfd, xnp->descsz);
252b5132
RH		 7305 in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4);
7306 in.descpos = offset + (in.descdata - buf);
7307
50b2bdb7
AM		 7308 if (strncmp (in.namedata, "NetBSD-CORE", 11) == 0)
7309 {
7310 if (! elfcore_grok_netbsd_note (abfd, &in))
7311 goto error;
7312 }
07c6e936
NC		 7313 else if (strncmp (in.namedata, "QNX", 3) == 0)
7314 {
7315 if (! elfcore_grok_nto_note (abfd, &in))
7316 goto error;
7317 }
50b2bdb7
AM		 7318 else
7319 {
7320 if (! elfcore_grok_note (abfd, &in))
7321 goto error;
7322 }
252b5132
RH		 7323
7324 p = in.descdata + BFD_ALIGN (in.descsz, 4);
7325 }
7326
7327 free (buf);
b34976b6 7328 return TRUE;
252b5132 7329}
98d8431c
JB		 7330\f
7331/* Providing external access to the ELF program header table. */
7332
7333/* Return an upper bound on the number of bytes required to store a
7334 copy of ABFD's program header table entries. Return -1 if an error
7335 occurs; bfd_get_error will return an appropriate code. */
c044fabd 7336
98d8431c
JB		 7337long
7338bfd_get_elf_phdr_upper_bound (abfd)
7339 bfd *abfd;
7340{
7341 if (abfd->xvec->flavour != bfd_target_elf_flavour)
7342 {
7343 bfd_set_error (bfd_error_wrong_format);
7344 return -1;
7345 }
7346
936e320b 7347 return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr);
98d8431c
JB		 7348}
7349
98d8431c
JB		 7350/* Copy ABFD's program header table entries to *PHDRS. The entries
7351 will be stored as an array of Elf_Internal_Phdr structures, as
7352 defined in include/elf/internal.h. To find out how large the
7353 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
7354
7355 Return the number of program header table entries read, or -1 if an
7356 error occurs; bfd_get_error will return an appropriate code. */
c044fabd 7357
98d8431c
JB		 7358int
7359bfd_get_elf_phdrs (abfd, phdrs)
7360 bfd *abfd;
7361 void *phdrs;
7362{
7363 int num_phdrs;
7364
7365 if (abfd->xvec->flavour != bfd_target_elf_flavour)
7366 {
7367 bfd_set_error (bfd_error_wrong_format);
7368 return -1;
7369 }
7370
7371 num_phdrs = elf_elfheader (abfd)->e_phnum;
c044fabd 7372 memcpy (phdrs, elf_tdata (abfd)->phdr,
98d8431c
JB		 7373 num_phdrs * sizeof (Elf_Internal_Phdr));
7374
7375 return num_phdrs;
7376}
ae4221d7
L		 7377
7378void
4e771d61 7379_bfd_elf_sprintf_vma (abfd, buf, value)
cc55aec9 7380 bfd *abfd ATTRIBUTE_UNUSED;
ae4221d7
L		 7381 char *buf;
7382 bfd_vma value;
7383{
d3b05f8d 7384#ifdef BFD64
ae4221d7
L		 7385 Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
7386
7387 i_ehdrp = elf_elfheader (abfd);
7388 if (i_ehdrp == NULL)
7389 sprintf_vma (buf, value);
7390 else
7391 {
7392 if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64)
cc55aec9 7393 {
ae4221d7 7394#if BFD_HOST_64BIT_LONG
cc55aec9 7395 sprintf (buf, "%016lx", value);
ae4221d7 7396#else
cc55aec9
AM		 7397 sprintf (buf, "%08lx%08lx", _bfd_int64_high (value),
7398 _bfd_int64_low (value));
ae4221d7 7399#endif
cc55aec9 7400 }
ae4221d7
L		 7401 else
7402 sprintf (buf, "%08lx", (unsigned long) (value & 0xffffffff));
7403 }
d3b05f8d
L		 7404#else
7405 sprintf_vma (buf, value);
7406#endif
ae4221d7
L		 7407}
7408
7409void
4e771d61 7410_bfd_elf_fprintf_vma (abfd, stream, value)
cc55aec9 7411 bfd *abfd ATTRIBUTE_UNUSED;
ae4221d7
L		 7412 PTR stream;
7413 bfd_vma value;
7414{
d3b05f8d 7415#ifdef BFD64
ae4221d7
L		 7416 Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
7417
7418 i_ehdrp = elf_elfheader (abfd);
7419 if (i_ehdrp == NULL)
7420 fprintf_vma ((FILE *) stream, value);
7421 else
7422 {
7423 if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64)
cc55aec9 7424 {
ae4221d7 7425#if BFD_HOST_64BIT_LONG
cc55aec9 7426 fprintf ((FILE *) stream, "%016lx", value);
ae4221d7 7427#else
cc55aec9
AM		 7428 fprintf ((FILE *) stream, "%08lx%08lx",
7429 _bfd_int64_high (value), _bfd_int64_low (value));
ae4221d7 7430#endif
cc55aec9 7431 }
ae4221d7
L		 7432 else
7433 fprintf ((FILE *) stream, "%08lx",
7434 (unsigned long) (value & 0xffffffff));
7435 }
d3b05f8d
L		 7436#else
7437 fprintf_vma ((FILE *) stream, value);
7438#endif
ae4221d7 7439}
db6751f2
JJ		 7440
7441enum elf_reloc_type_class
f51e552e
AM		 7442_bfd_elf_reloc_type_class (rela)
7443 const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED;
db6751f2
JJ		 7444{
7445 return reloc_class_normal;
7446}
f8df10f4 7447
47d9a591 7448/* For RELA architectures, return the relocation value for a
f8df10f4
JJ		 7449 relocation against a local symbol. */
7450
7451bfd_vma
7452_bfd_elf_rela_local_sym (abfd, sym, sec, rel)
7453 bfd *abfd;
7454 Elf_Internal_Sym *sym;
7455 asection *sec;
7456 Elf_Internal_Rela *rel;
7457{
7458 bfd_vma relocation;
7459
7460 relocation = (sec->output_section->vma
7461 + sec->output_offset
7462 + sym->st_value);
7463 if ((sec->flags & SEC_MERGE)
c629eae0 7464 && ELF_ST_TYPE (sym->st_info) == STT_SECTION
68bfbfcc 7465 && sec->sec_info_type == ELF_INFO_TYPE_MERGE)
f8df10f4
JJ		 7466 {
7467 asection *msec;
7468
7469 msec = sec;
7470 rel->r_addend =
7471 _bfd_merged_section_offset (abfd, &msec,
65765700 7472 elf_section_data (sec)->sec_info,
f8df10f4
JJ		 7473 sym->st_value + rel->r_addend,
7474 (bfd_vma) 0)
7475 - relocation;
7476 rel->r_addend += msec->output_section->vma + msec->output_offset;
7477 }
7478 return relocation;
7479}
c629eae0
JJ		 7480
7481bfd_vma
7482_bfd_elf_rel_local_sym (abfd, sym, psec, addend)
7483 bfd *abfd;
7484 Elf_Internal_Sym *sym;
7485 asection **psec;
7486 bfd_vma addend;
47d9a591 7487{
c629eae0
JJ		 7488 asection *sec = *psec;
7489
68bfbfcc 7490 if (sec->sec_info_type != ELF_INFO_TYPE_MERGE)
c629eae0
JJ		 7491 return sym->st_value + addend;
7492
7493 return _bfd_merged_section_offset (abfd, psec,
65765700 7494 elf_section_data (sec)->sec_info,
c629eae0
JJ		 7495 sym->st_value + addend, (bfd_vma) 0);
7496}
7497
7498bfd_vma
7499_bfd_elf_section_offset (abfd, info, sec, offset)
7500 bfd *abfd;
7501 struct bfd_link_info *info;
7502 asection *sec;
7503 bfd_vma offset;
7504{
7505 struct bfd_elf_section_data *sec_data;
7506
7507 sec_data = elf_section_data (sec);
68bfbfcc 7508 switch (sec->sec_info_type)
65765700
JJ		 7509 {
7510 case ELF_INFO_TYPE_STABS:
126495ed
AM		 7511 return _bfd_stab_section_offset (abfd,
7512 &elf_hash_table (info)->merge_info,
7513 sec, &sec_data->sec_info, offset);
65765700
JJ		 7514 case ELF_INFO_TYPE_EH_FRAME:
7515 return _bfd_elf_eh_frame_section_offset (abfd, sec, offset);
7516 default:
7517 return offset;
7518 }
c629eae0 7519}
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