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* linux-s390-low.c (s390_regmap): Check GPR_SIZE instead of
[deliverable/binutils-gdb.git] / bfd / elf.c
CommitLineData
252b5132 1/* ELF executable support for BFD.
e1fddb6b 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
7898deda 3 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
NC		 17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
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
44 PARAMS ((bfd *, asection **, unsigned int, unsigned int, boolean));
45static boolean map_sections_to_segments PARAMS ((bfd *));
46static int elf_sort_sections PARAMS ((const PTR, const PTR));
47static boolean assign_file_positions_for_segments PARAMS ((bfd *));
48static boolean assign_file_positions_except_relocs PARAMS ((bfd *));
49static boolean prep_headers PARAMS ((bfd *));
50static boolean swap_out_syms PARAMS ((bfd *, struct bfd_strtab_hash **, int));
51static boolean copy_private_bfd_data PARAMS ((bfd *, bfd *));
dc810e39 52static char *elf_read PARAMS ((bfd *, file_ptr, bfd_size_type));
b885599b 53static const char *group_signature PARAMS ((bfd *, Elf_Internal_Shdr *));
dbb410c3 54static boolean setup_group PARAMS ((bfd *, Elf_Internal_Shdr *, asection *));
d3c456e9 55static void merge_sections_remove_hook PARAMS ((bfd *, asection *));
252b5132
RH		 56static void elf_fake_sections PARAMS ((bfd *, asection *, PTR));
57static boolean assign_section_numbers PARAMS ((bfd *));
58static INLINE int sym_is_global PARAMS ((bfd *, asymbol *));
59static boolean elf_map_symbols PARAMS ((bfd *));
60static bfd_size_type get_program_header_size PARAMS ((bfd *));
dc810e39 61static boolean elfcore_read_notes PARAMS ((bfd *, file_ptr, bfd_size_type));
a7b97311
AM		 62static boolean elf_find_function PARAMS ((bfd *, asection *, asymbol **,
63 bfd_vma, const char **,
64 const char **));
65static int elfcore_make_pid PARAMS ((bfd *));
66static boolean elfcore_maybe_make_sect PARAMS ((bfd *, char *, asection *));
67static boolean elfcore_make_note_pseudosection PARAMS ((bfd *, char *,
68 Elf_Internal_Note *));
69static boolean elfcore_grok_prfpreg PARAMS ((bfd *, Elf_Internal_Note *));
70static boolean elfcore_grok_prxfpreg PARAMS ((bfd *, Elf_Internal_Note *));
71static boolean elfcore_grok_note PARAMS ((bfd *, Elf_Internal_Note *));
252b5132 72
50b2bdb7
AM		 73static boolean elfcore_netbsd_get_lwpid PARAMS ((Elf_Internal_Note *, int *));
74static boolean elfcore_grok_netbsd_procinfo PARAMS ((bfd *,
75 Elf_Internal_Note *));
76static boolean elfcore_grok_netbsd_note PARAMS ((bfd *, Elf_Internal_Note *));
77
252b5132
RH		 78/* Swap version information in and out. The version information is
79 currently size independent. If that ever changes, this code will
80 need to move into elfcode.h. */
81
82/* Swap in a Verdef structure. */
83
84void
85_bfd_elf_swap_verdef_in (abfd, src, dst)
86 bfd *abfd;
87 const Elf_External_Verdef *src;
88 Elf_Internal_Verdef *dst;
89{
dc810e39
AM		 90 dst->vd_version = H_GET_16 (abfd, src->vd_version);
91 dst->vd_flags = H_GET_16 (abfd, src->vd_flags);
92 dst->vd_ndx = H_GET_16 (abfd, src->vd_ndx);
93 dst->vd_cnt = H_GET_16 (abfd, src->vd_cnt);
94 dst->vd_hash = H_GET_32 (abfd, src->vd_hash);
95 dst->vd_aux = H_GET_32 (abfd, src->vd_aux);
96 dst->vd_next = H_GET_32 (abfd, src->vd_next);
252b5132
RH		 97}
98
99/* Swap out a Verdef structure. */
100
101void
102_bfd_elf_swap_verdef_out (abfd, src, dst)
103 bfd *abfd;
104 const Elf_Internal_Verdef *src;
105 Elf_External_Verdef *dst;
106{
dc810e39
AM		 107 H_PUT_16 (abfd, src->vd_version, dst->vd_version);
108 H_PUT_16 (abfd, src->vd_flags, dst->vd_flags);
109 H_PUT_16 (abfd, src->vd_ndx, dst->vd_ndx);
110 H_PUT_16 (abfd, src->vd_cnt, dst->vd_cnt);
111 H_PUT_32 (abfd, src->vd_hash, dst->vd_hash);
112 H_PUT_32 (abfd, src->vd_aux, dst->vd_aux);
113 H_PUT_32 (abfd, src->vd_next, dst->vd_next);
252b5132
RH		 114}
115
116/* Swap in a Verdaux structure. */
117
118void
119_bfd_elf_swap_verdaux_in (abfd, src, dst)
120 bfd *abfd;
121 const Elf_External_Verdaux *src;
122 Elf_Internal_Verdaux *dst;
123{
dc810e39
AM		 124 dst->vda_name = H_GET_32 (abfd, src->vda_name);
125 dst->vda_next = H_GET_32 (abfd, src->vda_next);
252b5132
RH		 126}
127
128/* Swap out a Verdaux structure. */
129
130void
131_bfd_elf_swap_verdaux_out (abfd, src, dst)
132 bfd *abfd;
133 const Elf_Internal_Verdaux *src;
134 Elf_External_Verdaux *dst;
135{
dc810e39
AM		 136 H_PUT_32 (abfd, src->vda_name, dst->vda_name);
137 H_PUT_32 (abfd, src->vda_next, dst->vda_next);
252b5132
RH		 138}
139
140/* Swap in a Verneed structure. */
141
142void
143_bfd_elf_swap_verneed_in (abfd, src, dst)
144 bfd *abfd;
145 const Elf_External_Verneed *src;
146 Elf_Internal_Verneed *dst;
147{
dc810e39
AM		 148 dst->vn_version = H_GET_16 (abfd, src->vn_version);
149 dst->vn_cnt = H_GET_16 (abfd, src->vn_cnt);
150 dst->vn_file = H_GET_32 (abfd, src->vn_file);
151 dst->vn_aux = H_GET_32 (abfd, src->vn_aux);
152 dst->vn_next = H_GET_32 (abfd, src->vn_next);
252b5132
RH		 153}
154
155/* Swap out a Verneed structure. */
156
157void
158_bfd_elf_swap_verneed_out (abfd, src, dst)
159 bfd *abfd;
160 const Elf_Internal_Verneed *src;
161 Elf_External_Verneed *dst;
162{
dc810e39
AM		 163 H_PUT_16 (abfd, src->vn_version, dst->vn_version);
164 H_PUT_16 (abfd, src->vn_cnt, dst->vn_cnt);
165 H_PUT_32 (abfd, src->vn_file, dst->vn_file);
166 H_PUT_32 (abfd, src->vn_aux, dst->vn_aux);
167 H_PUT_32 (abfd, src->vn_next, dst->vn_next);
252b5132
RH		 168}
169
170/* Swap in a Vernaux structure. */
171
172void
173_bfd_elf_swap_vernaux_in (abfd, src, dst)
174 bfd *abfd;
175 const Elf_External_Vernaux *src;
176 Elf_Internal_Vernaux *dst;
177{
dc810e39
AM		 178 dst->vna_hash = H_GET_32 (abfd, src->vna_hash);
179 dst->vna_flags = H_GET_16 (abfd, src->vna_flags);
180 dst->vna_other = H_GET_16 (abfd, src->vna_other);
181 dst->vna_name = H_GET_32 (abfd, src->vna_name);
182 dst->vna_next = H_GET_32 (abfd, src->vna_next);
252b5132
RH		 183}
184
185/* Swap out a Vernaux structure. */
186
187void
188_bfd_elf_swap_vernaux_out (abfd, src, dst)
189 bfd *abfd;
190 const Elf_Internal_Vernaux *src;
191 Elf_External_Vernaux *dst;
192{
dc810e39
AM		 193 H_PUT_32 (abfd, src->vna_hash, dst->vna_hash);
194 H_PUT_16 (abfd, src->vna_flags, dst->vna_flags);
195 H_PUT_16 (abfd, src->vna_other, dst->vna_other);
196 H_PUT_32 (abfd, src->vna_name, dst->vna_name);
197 H_PUT_32 (abfd, src->vna_next, dst->vna_next);
252b5132
RH		 198}
199
200/* Swap in a Versym structure. */
201
202void
203_bfd_elf_swap_versym_in (abfd, src, dst)
204 bfd *abfd;
205 const Elf_External_Versym *src;
206 Elf_Internal_Versym *dst;
207{
dc810e39 208 dst->vs_vers = H_GET_16 (abfd, src->vs_vers);
252b5132
RH		 209}
210
211/* Swap out a Versym structure. */
212
213void
214_bfd_elf_swap_versym_out (abfd, src, dst)
215 bfd *abfd;
216 const Elf_Internal_Versym *src;
217 Elf_External_Versym *dst;
218{
dc810e39 219 H_PUT_16 (abfd, src->vs_vers, dst->vs_vers);
252b5132
RH		 220}
221
222/* Standard ELF hash function. Do not change this function; you will
223 cause invalid hash tables to be generated. */
3a99b017 224
252b5132 225unsigned long
3a99b017
ILT		 226bfd_elf_hash (namearg)
227 const char *namearg;
252b5132 228{
3a99b017 229 const unsigned char *name = (const unsigned char *) namearg;
252b5132
RH		 230 unsigned long h = 0;
231 unsigned long g;
232 int ch;
233
234 while ((ch = *name++) != '\0')
235 {
236 h = (h << 4) + ch;
237 if ((g = (h & 0xf0000000)) != 0)
238 {
239 h ^= g >> 24;
240 /* The ELF ABI says `h &= ~g', but this is equivalent in
241 this case and on some machines one insn instead of two. */
242 h ^= g;
243 }
244 }
245 return h;
246}
247
248/* Read a specified number of bytes at a specified offset in an ELF
249 file, into a newly allocated buffer, and return a pointer to the
c044fabd 250 buffer. */
252b5132
RH		 251
252static char *
253elf_read (abfd, offset, size)
c044fabd 254 bfd *abfd;
dc810e39
AM		 255 file_ptr offset;
256 bfd_size_type size;
252b5132
RH		 257{
258 char *buf;
259
260 if ((buf = bfd_alloc (abfd, size)) == NULL)
261 return NULL;
dc810e39 262 if (bfd_seek (abfd, offset, SEEK_SET) != 0)
252b5132 263 return NULL;
dc810e39 264 if (bfd_bread ((PTR) buf, size, abfd) != size)
252b5132
RH		 265 {
266 if (bfd_get_error () != bfd_error_system_call)
267 bfd_set_error (bfd_error_file_truncated);
268 return NULL;
269 }
270 return buf;
271}
272
273boolean
274bfd_elf_mkobject (abfd)
c044fabd 275 bfd *abfd;
252b5132 276{
c044fabd
KH		 277 /* This just does initialization. */
278 /* coff_mkobject zalloc's space for tdata.coff_obj_data ... */
dc810e39
AM		 279 bfd_size_type amt = sizeof (struct elf_obj_tdata);
280 elf_tdata (abfd) = (struct elf_obj_tdata *) bfd_zalloc (abfd, amt);
252b5132
RH		 281 if (elf_tdata (abfd) == 0)
282 return false;
c044fabd
KH		 283 /* Since everything is done at close time, do we need any
284 initialization? */
252b5132
RH		 285
286 return true;
287}
288
289boolean
290bfd_elf_mkcorefile (abfd)
c044fabd 291 bfd *abfd;
252b5132 292{
c044fabd 293 /* I think this can be done just like an object file. */
252b5132
RH		 294 return bfd_elf_mkobject (abfd);
295}
296
297char *
298bfd_elf_get_str_section (abfd, shindex)
c044fabd 299 bfd *abfd;
252b5132
RH		 300 unsigned int shindex;
301{
302 Elf_Internal_Shdr **i_shdrp;
303 char *shstrtab = NULL;
dc810e39
AM		 304 file_ptr offset;
305 bfd_size_type shstrtabsize;
252b5132
RH		 306
307 i_shdrp = elf_elfsections (abfd);
308 if (i_shdrp == 0 || i_shdrp[shindex] == 0)
309 return 0;
310
311 shstrtab = (char *) i_shdrp[shindex]->contents;
312 if (shstrtab == NULL)
313 {
c044fabd 314 /* No cached one, attempt to read, and cache what we read. */
252b5132
RH		 315 offset = i_shdrp[shindex]->sh_offset;
316 shstrtabsize = i_shdrp[shindex]->sh_size;
317 shstrtab = elf_read (abfd, offset, shstrtabsize);
318 i_shdrp[shindex]->contents = (PTR) shstrtab;
319 }
320 return shstrtab;
321}
322
323char *
324bfd_elf_string_from_elf_section (abfd, shindex, strindex)
c044fabd 325 bfd *abfd;
252b5132
RH		 326 unsigned int shindex;
327 unsigned int strindex;
328{
329 Elf_Internal_Shdr *hdr;
330
331 if (strindex == 0)
332 return "";
333
334 hdr = elf_elfsections (abfd)[shindex];
335
336 if (hdr->contents == NULL
337 && bfd_elf_get_str_section (abfd, shindex) == NULL)
338 return NULL;
339
340 if (strindex >= hdr->sh_size)
341 {
342 (*_bfd_error_handler)
343 (_("%s: invalid string offset %u >= %lu for section `%s'"),
8f615d07 344 bfd_archive_filename (abfd), strindex, (unsigned long) hdr->sh_size,
252b5132
RH		 345 ((shindex == elf_elfheader(abfd)->e_shstrndx
346 && strindex == hdr->sh_name)
347 ? ".shstrtab"
348 : elf_string_from_elf_strtab (abfd, hdr->sh_name)));
349 return "";
350 }
351
352 return ((char *) hdr->contents) + strindex;
353}
354
6cdc0ccc
AM		 355/* Read and convert symbols to internal format.
356 SYMCOUNT specifies the number of symbols to read, starting from
357 symbol SYMOFFSET. If any of INTSYM_BUF, EXTSYM_BUF or EXTSHNDX_BUF
358 are non-NULL, they are used to store the internal symbols, external
359 symbols, and symbol section index extensions, respectively. */
360
361Elf_Internal_Sym *
362bfd_elf_get_elf_syms (ibfd, symtab_hdr, symcount, symoffset,
363 intsym_buf, extsym_buf, extshndx_buf)
364 bfd *ibfd;
365 Elf_Internal_Shdr *symtab_hdr;
366 size_t symcount;
367 size_t symoffset;
368 Elf_Internal_Sym *intsym_buf;
369 PTR extsym_buf;
370 Elf_External_Sym_Shndx *extshndx_buf;
371{
372 Elf_Internal_Shdr *shndx_hdr;
373 PTR alloc_ext;
df622259 374 const bfd_byte *esym;
6cdc0ccc
AM		 375 Elf_External_Sym_Shndx *alloc_extshndx;
376 Elf_External_Sym_Shndx *shndx;
377 Elf_Internal_Sym *isym;
378 Elf_Internal_Sym *isymend;
379 struct elf_backend_data *bed;
380 size_t extsym_size;
381 bfd_size_type amt;
382 file_ptr pos;
383
384 if (symcount == 0)
385 return intsym_buf;
386
387 /* Normal syms might have section extension entries. */
388 shndx_hdr = NULL;
389 if (symtab_hdr == &elf_tdata (ibfd)->symtab_hdr)
390 shndx_hdr = &elf_tdata (ibfd)->symtab_shndx_hdr;
391
392 /* Read the symbols. */
393 alloc_ext = NULL;
394 alloc_extshndx = NULL;
395 bed = get_elf_backend_data (ibfd);
396 extsym_size = bed->s->sizeof_sym;
397 amt = symcount * extsym_size;
398 pos = symtab_hdr->sh_offset + symoffset * extsym_size;
399 if (extsym_buf == NULL)
400 {
401 alloc_ext = bfd_malloc (amt);
402 extsym_buf = alloc_ext;
403 }
404 if (extsym_buf == NULL
405 || bfd_seek (ibfd, pos, SEEK_SET) != 0
406 || bfd_bread (extsym_buf, amt, ibfd) != amt)
407 {
408 intsym_buf = NULL;
409 goto out;
410 }
411
412 if (shndx_hdr == NULL || shndx_hdr->sh_size == 0)
413 extshndx_buf = NULL;
414 else
415 {
416 amt = symcount * sizeof (Elf_External_Sym_Shndx);
417 pos = shndx_hdr->sh_offset + symoffset * sizeof (Elf_External_Sym_Shndx);
418 if (extshndx_buf == NULL)
419 {
420 alloc_extshndx = (Elf_External_Sym_Shndx *) bfd_malloc (amt);
421 extshndx_buf = alloc_extshndx;
422 }
423 if (extshndx_buf == NULL
424 || bfd_seek (ibfd, pos, SEEK_SET) != 0
425 || bfd_bread (extshndx_buf, amt, ibfd) != amt)
426 {
427 intsym_buf = NULL;
428 goto out;
429 }
430 }
431
432 if (intsym_buf == NULL)
433 {
434 bfd_size_type amt = symcount * sizeof (Elf_Internal_Sym);
435 intsym_buf = (Elf_Internal_Sym *) bfd_malloc (amt);
436 if (intsym_buf == NULL)
437 goto out;
438 }
439
440 /* Convert the symbols to internal form. */
441 isymend = intsym_buf + symcount;
442 for (esym = extsym_buf, isym = intsym_buf, shndx = extshndx_buf;
443 isym < isymend;
444 esym += extsym_size, isym++, shndx = shndx != NULL ? shndx + 1 : NULL)
445 (*bed->s->swap_symbol_in) (ibfd, esym, (const PTR) shndx, isym);
446
447 out:
448 if (alloc_ext != NULL)
449 free (alloc_ext);
450 if (alloc_extshndx != NULL)
451 free (alloc_extshndx);
452
453 return intsym_buf;
454}
455
dbb410c3
AM		 456/* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP
457 sections. The first element is the flags, the rest are section
458 pointers. */
459
460typedef union elf_internal_group {
461 Elf_Internal_Shdr *shdr;
462 unsigned int flags;
463} Elf_Internal_Group;
464
b885599b
AM		 465/* Return the name of the group signature symbol. Why isn't the
466 signature just a string? */
467
468static const char *
469group_signature (abfd, ghdr)
470 bfd *abfd;
471 Elf_Internal_Shdr *ghdr;
472{
9dce4196 473 Elf_Internal_Shdr *hdr;
9dce4196
AM		 474 unsigned char esym[sizeof (Elf64_External_Sym)];
475 Elf_External_Sym_Shndx eshndx;
476 Elf_Internal_Sym isym;
477 unsigned int iname;
478 unsigned int shindex;
b885599b
AM		 479
480 /* First we need to ensure the symbol table is available. */
481 if (! bfd_section_from_shdr (abfd, ghdr->sh_link))
482 return NULL;
483
9dce4196
AM		 484 /* Go read the symbol. */
485 hdr = &elf_tdata (abfd)->symtab_hdr;
6cdc0ccc
AM		 486 if (bfd_elf_get_elf_syms (abfd, hdr, 1, ghdr->sh_info,
487 &isym, esym, &eshndx) == NULL)
b885599b 488 return NULL;
9dce4196 489
9dce4196
AM		 490 /* Look up the symbol name. */
491 iname = isym.st_name;
492 shindex = 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);
b885599b
AM		 500}
501
dbb410c3
AM		 502/* Set next_in_group list pointer, and group name for NEWSECT. */
503
504static boolean
505setup_group (abfd, hdr, newsect)
506 bfd *abfd;
507 Elf_Internal_Shdr *hdr;
508 asection *newsect;
509{
510 unsigned int num_group = elf_tdata (abfd)->num_group;
511
512 /* If num_group is zero, read in all SHT_GROUP sections. The count
513 is set to -1 if there are no SHT_GROUP sections. */
514 if (num_group == 0)
515 {
516 unsigned int i, shnum;
517
518 /* First count the number of groups. If we have a SHT_GROUP
519 section with just a flag word (ie. sh_size is 4), ignore it. */
9ad5cbcf 520 shnum = elf_numsections (abfd);
dbb410c3
AM		 521 num_group = 0;
522 for (i = 0; i < shnum; i++)
523 {
524 Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i];
525 if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8)
526 num_group += 1;
527 }
528
529 if (num_group == 0)
973ffd63 530 num_group = (unsigned) -1;
dbb410c3
AM		 531 elf_tdata (abfd)->num_group = num_group;
532
533 if (num_group > 0)
534 {
535 /* We keep a list of elf section headers for group sections,
536 so we can find them quickly. */
537 bfd_size_type amt = num_group * sizeof (Elf_Internal_Shdr *);
538 elf_tdata (abfd)->group_sect_ptr = bfd_alloc (abfd, amt);
539 if (elf_tdata (abfd)->group_sect_ptr == NULL)
540 return false;
541
542 num_group = 0;
543 for (i = 0; i < shnum; i++)
544 {
545 Elf_Internal_Shdr *shdr = elf_elfsections (abfd)[i];
546 if (shdr->sh_type == SHT_GROUP && shdr->sh_size >= 8)
547 {
973ffd63 548 unsigned char *src;
dbb410c3
AM		 549 Elf_Internal_Group *dest;
550
551 /* Add to list of sections. */
552 elf_tdata (abfd)->group_sect_ptr[num_group] = shdr;
553 num_group += 1;
554
555 /* Read the raw contents. */
556 BFD_ASSERT (sizeof (*dest) >= 4);
557 amt = shdr->sh_size * sizeof (*dest) / 4;
558 shdr->contents = bfd_alloc (abfd, amt);
559 if (shdr->contents == NULL
560 || bfd_seek (abfd, shdr->sh_offset, SEEK_SET) != 0
561 || (bfd_bread (shdr->contents, shdr->sh_size, abfd)
562 != shdr->sh_size))
563 return false;
564
565 /* Translate raw contents, a flag word followed by an
566 array of elf section indices all in target byte order,
567 to the flag word followed by an array of elf section
568 pointers. */
569 src = shdr->contents + shdr->sh_size;
570 dest = (Elf_Internal_Group *) (shdr->contents + amt);
571 while (1)
572 {
573 unsigned int idx;
574
575 src -= 4;
576 --dest;
577 idx = H_GET_32 (abfd, src);
578 if (src == shdr->contents)
579 {
580 dest->flags = idx;
b885599b
AM		 581 if (shdr->bfd_section != NULL && (idx & GRP_COMDAT))
582 shdr->bfd_section->flags
583 |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
dbb410c3
AM		 584 break;
585 }
586 if (idx >= shnum)
587 {
588 ((*_bfd_error_handler)
589 (_("%s: invalid SHT_GROUP entry"),
590 bfd_archive_filename (abfd)));
591 idx = 0;
592 }
593 dest->shdr = elf_elfsections (abfd)[idx];
594 }
595 }
596 }
597 }
598 }
599
600 if (num_group != (unsigned) -1)
601 {
602 unsigned int i;
603
604 for (i = 0; i < num_group; i++)
605 {
606 Elf_Internal_Shdr *shdr = elf_tdata (abfd)->group_sect_ptr[i];
607 Elf_Internal_Group *idx = (Elf_Internal_Group *) shdr->contents;
608 unsigned int n_elt = shdr->sh_size / 4;
609
610 /* Look through this group's sections to see if current
611 section is a member. */
612 while (--n_elt != 0)
613 if ((++idx)->shdr == hdr)
614 {
e0e8c97f 615 asection *s = NULL;
dbb410c3
AM		 616
617 /* We are a member of this group. Go looking through
618 other members to see if any others are linked via
619 next_in_group. */
620 idx = (Elf_Internal_Group *) shdr->contents;
621 n_elt = shdr->sh_size / 4;
622 while (--n_elt != 0)
623 if ((s = (++idx)->shdr->bfd_section) != NULL
945906ff 624 && elf_next_in_group (s) != NULL)
dbb410c3
AM		 625 break;
626 if (n_elt != 0)
627 {
dbb410c3
AM		 628 /* Snarf the group name from other member, and
629 insert current section in circular list. */
945906ff
AM		 630 elf_group_name (newsect) = elf_group_name (s);
631 elf_next_in_group (newsect) = elf_next_in_group (s);
632 elf_next_in_group (s) = newsect;
dbb410c3
AM		 633 }
634 else
635 {
dbb410c3
AM		 636 const char *gname;
637
b885599b
AM		 638 gname = group_signature (abfd, shdr);
639 if (gname == NULL)
dbb410c3 640 return false;
945906ff 641 elf_group_name (newsect) = gname;
dbb410c3
AM		 642
643 /* Start a circular list with one element. */
945906ff 644 elf_next_in_group (newsect) = newsect;
dbb410c3 645 }
b885599b 646
9dce4196
AM		 647 /* If the group section has been created, point to the
648 new member. */
dbb410c3 649 if (shdr->bfd_section != NULL)
945906ff 650 elf_next_in_group (shdr->bfd_section) = newsect;
b885599b 651
dbb410c3
AM		 652 i = num_group - 1;
653 break;
654 }
655 }
656 }
657
945906ff 658 if (elf_group_name (newsect) == NULL)
dbb410c3
AM		 659 {
660 (*_bfd_error_handler) (_("%s: no group info for section %s"),
661 bfd_archive_filename (abfd), newsect->name);
662 }
663 return true;
664}
665
e61463e1 666boolean
b885599b
AM		 667bfd_elf_discard_group (abfd, group)
668 bfd *abfd ATTRIBUTE_UNUSED;
669 asection *group;
670{
671 asection *first = elf_next_in_group (group);
672 asection *s = first;
673
674 while (s != NULL)
675 {
676 s->output_section = bfd_abs_section_ptr;
677 s = elf_next_in_group (s);
678 /* These lists are circular. */
679 if (s == first)
680 break;
681 }
e61463e1 682 return true;
b885599b
AM		 683}
684
252b5132
RH		 685/* Make a BFD section from an ELF section. We store a pointer to the
686 BFD section in the bfd_section field of the header. */
687
688boolean
689_bfd_elf_make_section_from_shdr (abfd, hdr, name)
690 bfd *abfd;
691 Elf_Internal_Shdr *hdr;
692 const char *name;
693{
694 asection *newsect;
695 flagword flags;
fa152c49 696 struct elf_backend_data *bed;
252b5132
RH		 697
698 if (hdr->bfd_section != NULL)
699 {
700 BFD_ASSERT (strcmp (name,
701 bfd_get_section_name (abfd, hdr->bfd_section)) == 0);
702 return true;
703 }
704
705 newsect = bfd_make_section_anyway (abfd, name);
706 if (newsect == NULL)
707 return false;
708
709 newsect->filepos = hdr->sh_offset;
710
711 if (! bfd_set_section_vma (abfd, newsect, hdr->sh_addr)
712 || ! bfd_set_section_size (abfd, newsect, hdr->sh_size)
713 || ! bfd_set_section_alignment (abfd, newsect,
dc810e39 714 bfd_log2 ((bfd_vma) hdr->sh_addralign)))
252b5132
RH		 715 return false;
716
717 flags = SEC_NO_FLAGS;
718 if (hdr->sh_type != SHT_NOBITS)
719 flags |= SEC_HAS_CONTENTS;
dbb410c3
AM		 720 if (hdr->sh_type == SHT_GROUP)
721 flags |= SEC_GROUP | SEC_EXCLUDE;
252b5132
RH		 722 if ((hdr->sh_flags & SHF_ALLOC) != 0)
723 {
724 flags |= SEC_ALLOC;
725 if (hdr->sh_type != SHT_NOBITS)
726 flags |= SEC_LOAD;
727 }
728 if ((hdr->sh_flags & SHF_WRITE) == 0)
729 flags |= SEC_READONLY;
730 if ((hdr->sh_flags & SHF_EXECINSTR) != 0)
731 flags |= SEC_CODE;
732 else if ((flags & SEC_LOAD) != 0)
733 flags |= SEC_DATA;
f5fa8ca2
JJ		 734 if ((hdr->sh_flags & SHF_MERGE) != 0)
735 {
736 flags |= SEC_MERGE;
737 newsect->entsize = hdr->sh_entsize;
738 if ((hdr->sh_flags & SHF_STRINGS) != 0)
739 flags |= SEC_STRINGS;
740 }
dbb410c3
AM		 741 if (hdr->sh_flags & SHF_GROUP)
742 if (!setup_group (abfd, hdr, newsect))
743 return false;
13ae64f3
JJ		 744 if ((hdr->sh_flags & SHF_TLS) != 0)
745 flags |= SEC_THREAD_LOCAL;
252b5132
RH		 746
747 /* The debugging sections appear to be recognized only by name, not
748 any sort of flag. */
7a6cc5fb 749 {
dbf48117 750 static const char *debug_sec_names [] =
7a6cc5fb
NC		 751 {
752 ".debug",
753 ".gnu.linkonce.wi.",
754 ".line",
755 ".stab"
756 };
757 int i;
758
e0e8c97f 759 for (i = ARRAY_SIZE (debug_sec_names); i--;)
7a6cc5fb
NC		 760 if (strncmp (name, debug_sec_names[i], strlen (debug_sec_names[i])) == 0)
761 break;
762
763 if (i >= 0)
764 flags |= SEC_DEBUGGING;
765 }
252b5132
RH		 766
767 /* As a GNU extension, if the name begins with .gnu.linkonce, we
768 only link a single copy of the section. This is used to support
769 g++. g++ will emit each template expansion in its own section.
770 The symbols will be defined as weak, so that multiple definitions
771 are permitted. The GNU linker extension is to actually discard
772 all but one of the sections. */
b885599b
AM		 773 if (strncmp (name, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0
774 && elf_next_in_group (newsect) == NULL)
252b5132
RH		 775 flags |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
776
fa152c49
JW		 777 bed = get_elf_backend_data (abfd);
778 if (bed->elf_backend_section_flags)
779 if (! bed->elf_backend_section_flags (&flags, hdr))
780 return false;
781
252b5132
RH		 782 if (! bfd_set_section_flags (abfd, newsect, flags))
783 return false;
784
785 if ((flags & SEC_ALLOC) != 0)
786 {
787 Elf_Internal_Phdr *phdr;
788 unsigned int i;
789
790 /* Look through the phdrs to see if we need to adjust the lma.
791 If all the p_paddr fields are zero, we ignore them, since
792 some ELF linkers produce such output. */
793 phdr = elf_tdata (abfd)->phdr;
794 for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++)
795 {
796 if (phdr->p_paddr != 0)
797 break;
798 }
799 if (i < elf_elfheader (abfd)->e_phnum)
800 {
801 phdr = elf_tdata (abfd)->phdr;
802 for (i = 0; i < elf_elfheader (abfd)->e_phnum; i++, phdr++)
803 {
e0e8c97f
NC		 804 /* This section is part of this segment if its file
805 offset plus size lies within the segment's memory
806 span and, if the section is loaded, the extent of the
47d9a591 807 loaded data lies within the extent of the segment.
bf36db18
NC		 808
809 Note - we used to check the p_paddr field as well, and
810 refuse to set the LMA if it was 0. This is wrong
dba143ef 811 though, as a perfectly valid initialised segment can
bf36db18 812 have a p_paddr of zero. Some architectures, eg ARM,
dba143ef 813 place special significance on the address 0 and
bf36db18
NC		 814 executables need to be able to have a segment which
815 covers this address. */
252b5132 816 if (phdr->p_type == PT_LOAD
e0e8c97f
NC		 817 && (bfd_vma) hdr->sh_offset >= phdr->p_offset
818 && (hdr->sh_offset + hdr->sh_size
819 <= phdr->p_offset + phdr->p_memsz)
252b5132 820 && ((flags & SEC_LOAD) == 0
d7866f04
AM		 821 || (hdr->sh_offset + hdr->sh_size
822 <= phdr->p_offset + phdr->p_filesz)))
252b5132 823 {
dba143ef 824 if ((flags & SEC_LOAD) == 0)
d7866f04
AM		 825 newsect->lma = (phdr->p_paddr
826 + hdr->sh_addr - phdr->p_vaddr);
dba143ef
AM		 827 else
828 /* We used to use the same adjustment for SEC_LOAD
829 sections, but that doesn't work if the segment
830 is packed with code from multiple VMAs.
831 Instead we calculate the section LMA based on
832 the segment LMA. It is assumed that the
833 segment will contain sections with contiguous
834 LMAs, even if the VMAs are not. */
835 newsect->lma = (phdr->p_paddr
836 + hdr->sh_offset - phdr->p_offset);
d7866f04
AM		 837
838 /* With contiguous segments, we can't tell from file
839 offsets whether a section with zero size should
840 be placed at the end of one segment or the
841 beginning of the next. Decide based on vaddr. */
842 if (hdr->sh_addr >= phdr->p_vaddr
843 && (hdr->sh_addr + hdr->sh_size
844 <= phdr->p_vaddr + phdr->p_memsz))
845 break;
252b5132
RH		 846 }
847 }
848 }
849 }
850
851 hdr->bfd_section = newsect;
852 elf_section_data (newsect)->this_hdr = *hdr;
853
854 return true;
855}
856
857/*
858INTERNAL_FUNCTION
859 bfd_elf_find_section
860
861SYNOPSIS
862 struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name);
863
864DESCRIPTION
865 Helper functions for GDB to locate the string tables.
866 Since BFD hides string tables from callers, GDB needs to use an
867 internal hook to find them. Sun's .stabstr, in particular,
868 isn't even pointed to by the .stab section, so ordinary
869 mechanisms wouldn't work to find it, even if we had some.
870*/
871
872struct elf_internal_shdr *
873bfd_elf_find_section (abfd, name)
c044fabd 874 bfd *abfd;
252b5132
RH		 875 char *name;
876{
877 Elf_Internal_Shdr **i_shdrp;
878 char *shstrtab;
879 unsigned int max;
880 unsigned int i;
881
882 i_shdrp = elf_elfsections (abfd);
883 if (i_shdrp != NULL)
884 {
9ad5cbcf
AM		 885 shstrtab = bfd_elf_get_str_section (abfd,
886 elf_elfheader (abfd)->e_shstrndx);
252b5132
RH		 887 if (shstrtab != NULL)
888 {
9ad5cbcf 889 max = elf_numsections (abfd);
252b5132
RH		 890 for (i = 1; i < max; i++)
891 if (!strcmp (&shstrtab[i_shdrp[i]->sh_name], name))
892 return i_shdrp[i];
893 }
894 }
895 return 0;
896}
897
898const char *const bfd_elf_section_type_names[] = {
899 "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB",
900 "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE",
901 "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM",
902};
903
904/* ELF relocs are against symbols. If we are producing relocateable
905 output, and the reloc is against an external symbol, and nothing
906 has given us any additional addend, the resulting reloc will also
907 be against the same symbol. In such a case, we don't want to
908 change anything about the way the reloc is handled, since it will
909 all be done at final link time. Rather than put special case code
910 into bfd_perform_relocation, all the reloc types use this howto
911 function. It just short circuits the reloc if producing
912 relocateable output against an external symbol. */
913
252b5132
RH		 914bfd_reloc_status_type
915bfd_elf_generic_reloc (abfd,
916 reloc_entry,
917 symbol,
918 data,
919 input_section,
920 output_bfd,
921 error_message)
7442e600 922 bfd *abfd ATTRIBUTE_UNUSED;
252b5132
RH		 923 arelent *reloc_entry;
924 asymbol *symbol;
7442e600 925 PTR data ATTRIBUTE_UNUSED;
252b5132
RH		 926 asection *input_section;
927 bfd *output_bfd;
7442e600 928 char **error_message ATTRIBUTE_UNUSED;
252b5132
RH		 929{
930 if (output_bfd != (bfd *) NULL
931 && (symbol->flags & BSF_SECTION_SYM) == 0
932 && (! reloc_entry->howto->partial_inplace
933 || reloc_entry->addend == 0))
934 {
935 reloc_entry->address += input_section->output_offset;
936 return bfd_reloc_ok;
937 }
938
939 return bfd_reloc_continue;
940}
941\f
d3c456e9
JJ		 942/* Make sure sec_info_type is cleared if sec_info is cleared too. */
943
944static void
945merge_sections_remove_hook (abfd, sec)
946 bfd *abfd ATTRIBUTE_UNUSED;
947 asection *sec;
948{
949 struct bfd_elf_section_data *sec_data;
47d9a591 950
d3c456e9
JJ		 951 sec_data = elf_section_data (sec);
952 BFD_ASSERT (sec_data->sec_info_type == ELF_INFO_TYPE_MERGE);
953 sec_data->sec_info_type = ELF_INFO_TYPE_NONE;
954}
955
8550eb6e
JJ		 956/* Finish SHF_MERGE section merging. */
957
958boolean
959_bfd_elf_merge_sections (abfd, info)
960 bfd *abfd;
961 struct bfd_link_info *info;
962{
b0f35f36 963 if (!is_elf_hash_table (info))
8ea2e4bd 964 return false;
b0f35f36 965 if (elf_hash_table (info)->merge_info)
d3c456e9
JJ		 966 _bfd_merge_sections (abfd, elf_hash_table (info)->merge_info,
967 merge_sections_remove_hook);
8550eb6e
JJ		 968 return true;
969}
2d653fc7
AM		 970
971void
972_bfd_elf_link_just_syms (sec, info)
973 asection *sec;
974 struct bfd_link_info *info;
975{
976 sec->output_section = bfd_abs_section_ptr;
977 sec->output_offset = sec->vma;
978 if (!is_elf_hash_table (info))
979 return;
980
981 elf_section_data (sec)->sec_info_type = ELF_INFO_TYPE_JUST_SYMS;
982}
8550eb6e 983\f
0ac4564e
L		 984/* Copy the program header and other data from one object module to
985 another. */
252b5132 986
2d502050
L		 987boolean
988_bfd_elf_copy_private_bfd_data (ibfd, obfd)
989 bfd *ibfd;
990 bfd *obfd;
991{
992 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
993 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
994 return true;
995
996 BFD_ASSERT (!elf_flags_init (obfd)
997 || (elf_elfheader (obfd)->e_flags
998 == elf_elfheader (ibfd)->e_flags));
999
0ac4564e 1000 elf_gp (obfd) = elf_gp (ibfd);
2d502050
L		 1001 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
1002 elf_flags_init (obfd) = true;
1003 return true;
1004}
1005
f0b79d91
L		 1006/* Print out the program headers. */
1007
252b5132
RH		 1008boolean
1009_bfd_elf_print_private_bfd_data (abfd, farg)
1010 bfd *abfd;
1011 PTR farg;
1012{
1013 FILE *f = (FILE *) farg;
1014 Elf_Internal_Phdr *p;
1015 asection *s;
1016 bfd_byte *dynbuf = NULL;
1017
1018 p = elf_tdata (abfd)->phdr;
1019 if (p != NULL)
1020 {
1021 unsigned int i, c;
1022
1023 fprintf (f, _("\nProgram Header:\n"));
1024 c = elf_elfheader (abfd)->e_phnum;
1025 for (i = 0; i < c; i++, p++)
1026 {
dc810e39 1027 const char *pt;
252b5132
RH		 1028 char buf[20];
1029
1030 switch (p->p_type)
1031 {
dc810e39
AM		 1032 case PT_NULL: pt = "NULL"; break;
1033 case PT_LOAD: pt = "LOAD"; break;
1034 case PT_DYNAMIC: pt = "DYNAMIC"; break;
1035 case PT_INTERP: pt = "INTERP"; break;
1036 case PT_NOTE: pt = "NOTE"; break;
1037 case PT_SHLIB: pt = "SHLIB"; break;
1038 case PT_PHDR: pt = "PHDR"; break;
13ae64f3 1039 case PT_TLS: pt = "TLS"; break;
65765700 1040 case PT_GNU_EH_FRAME: pt = "EH_FRAME"; break;
dc810e39 1041 default: sprintf (buf, "0x%lx", p->p_type); pt = buf; break;
252b5132 1042 }
dc810e39 1043 fprintf (f, "%8s off 0x", pt);
60b89a18 1044 bfd_fprintf_vma (abfd, f, p->p_offset);
252b5132 1045 fprintf (f, " vaddr 0x");
60b89a18 1046 bfd_fprintf_vma (abfd, f, p->p_vaddr);
252b5132 1047 fprintf (f, " paddr 0x");
60b89a18 1048 bfd_fprintf_vma (abfd, f, p->p_paddr);
252b5132
RH		 1049 fprintf (f, " align 2**%u\n", bfd_log2 (p->p_align));
1050 fprintf (f, " filesz 0x");
60b89a18 1051 bfd_fprintf_vma (abfd, f, p->p_filesz);
252b5132 1052 fprintf (f, " memsz 0x");
60b89a18 1053 bfd_fprintf_vma (abfd, f, p->p_memsz);
252b5132
RH		 1054 fprintf (f, " flags %c%c%c",
1055 (p->p_flags & PF_R) != 0 ? 'r' : '-',
1056 (p->p_flags & PF_W) != 0 ? 'w' : '-',
1057 (p->p_flags & PF_X) != 0 ? 'x' : '-');
dc810e39
AM		 1058 if ((p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X)) != 0)
1059 fprintf (f, " %lx", p->p_flags &~ (unsigned) (PF_R | PF_W | PF_X));
252b5132
RH		 1060 fprintf (f, "\n");
1061 }
1062 }
1063
1064 s = bfd_get_section_by_name (abfd, ".dynamic");
1065 if (s != NULL)
1066 {
1067 int elfsec;
dc810e39 1068 unsigned long shlink;
252b5132
RH		 1069 bfd_byte *extdyn, *extdynend;
1070 size_t extdynsize;
1071 void (*swap_dyn_in) PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *));
1072
1073 fprintf (f, _("\nDynamic Section:\n"));
1074
1075 dynbuf = (bfd_byte *) bfd_malloc (s->_raw_size);
1076 if (dynbuf == NULL)
1077 goto error_return;
1078 if (! bfd_get_section_contents (abfd, s, (PTR) dynbuf, (file_ptr) 0,
1079 s->_raw_size))
1080 goto error_return;
1081
1082 elfsec = _bfd_elf_section_from_bfd_section (abfd, s);
1083 if (elfsec == -1)
1084 goto error_return;
dc810e39 1085 shlink = elf_elfsections (abfd)[elfsec]->sh_link;
252b5132
RH		 1086
1087 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
1088 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
1089
1090 extdyn = dynbuf;
1091 extdynend = extdyn + s->_raw_size;
1092 for (; extdyn < extdynend; extdyn += extdynsize)
1093 {
1094 Elf_Internal_Dyn dyn;
1095 const char *name;
1096 char ab[20];
1097 boolean stringp;
1098
1099 (*swap_dyn_in) (abfd, (PTR) extdyn, &dyn);
1100
1101 if (dyn.d_tag == DT_NULL)
1102 break;
1103
1104 stringp = false;
1105 switch (dyn.d_tag)
1106 {
1107 default:
1108 sprintf (ab, "0x%lx", (unsigned long) dyn.d_tag);
1109 name = ab;
1110 break;
1111
1112 case DT_NEEDED: name = "NEEDED"; stringp = true; break;
1113 case DT_PLTRELSZ: name = "PLTRELSZ"; break;
1114 case DT_PLTGOT: name = "PLTGOT"; break;
1115 case DT_HASH: name = "HASH"; break;
1116 case DT_STRTAB: name = "STRTAB"; break;
1117 case DT_SYMTAB: name = "SYMTAB"; break;
1118 case DT_RELA: name = "RELA"; break;
1119 case DT_RELASZ: name = "RELASZ"; break;
1120 case DT_RELAENT: name = "RELAENT"; break;
1121 case DT_STRSZ: name = "STRSZ"; break;
1122 case DT_SYMENT: name = "SYMENT"; break;
1123 case DT_INIT: name = "INIT"; break;
1124 case DT_FINI: name = "FINI"; break;
1125 case DT_SONAME: name = "SONAME"; stringp = true; break;
1126 case DT_RPATH: name = "RPATH"; stringp = true; break;
1127 case DT_SYMBOLIC: name = "SYMBOLIC"; break;
1128 case DT_REL: name = "REL"; break;
1129 case DT_RELSZ: name = "RELSZ"; break;
1130 case DT_RELENT: name = "RELENT"; break;
1131 case DT_PLTREL: name = "PLTREL"; break;
1132 case DT_DEBUG: name = "DEBUG"; break;
1133 case DT_TEXTREL: name = "TEXTREL"; break;
1134 case DT_JMPREL: name = "JMPREL"; break;
94558834
L		 1135 case DT_BIND_NOW: name = "BIND_NOW"; break;
1136 case DT_INIT_ARRAY: name = "INIT_ARRAY"; break;
1137 case DT_FINI_ARRAY: name = "FINI_ARRAY"; break;
1138 case DT_INIT_ARRAYSZ: name = "INIT_ARRAYSZ"; break;
1139 case DT_FINI_ARRAYSZ: name = "FINI_ARRAYSZ"; break;
1140 case DT_RUNPATH: name = "RUNPATH"; stringp = true; break;
1141 case DT_FLAGS: name = "FLAGS"; break;
1142 case DT_PREINIT_ARRAY: name = "PREINIT_ARRAY"; break;
1143 case DT_PREINIT_ARRAYSZ: name = "PREINIT_ARRAYSZ"; break;
d48188b9 1144 case DT_CHECKSUM: name = "CHECKSUM"; break;
94558834
L		 1145 case DT_PLTPADSZ: name = "PLTPADSZ"; break;
1146 case DT_MOVEENT: name = "MOVEENT"; break;
1147 case DT_MOVESZ: name = "MOVESZ"; break;
1148 case DT_FEATURE: name = "FEATURE"; break;
1149 case DT_POSFLAG_1: name = "POSFLAG_1"; break;
1150 case DT_SYMINSZ: name = "SYMINSZ"; break;
1151 case DT_SYMINENT: name = "SYMINENT"; break;
36a30e65
L		 1152 case DT_CONFIG: name = "CONFIG"; stringp = true; break;
1153 case DT_DEPAUDIT: name = "DEPAUDIT"; stringp = true; break;
1154 case DT_AUDIT: name = "AUDIT"; stringp = true; break;
94558834
L		 1155 case DT_PLTPAD: name = "PLTPAD"; break;
1156 case DT_MOVETAB: name = "MOVETAB"; break;
1157 case DT_SYMINFO: name = "SYMINFO"; break;
1158 case DT_RELACOUNT: name = "RELACOUNT"; break;
1159 case DT_RELCOUNT: name = "RELCOUNT"; break;
1160 case DT_FLAGS_1: name = "FLAGS_1"; break;
252b5132
RH		 1161 case DT_VERSYM: name = "VERSYM"; break;
1162 case DT_VERDEF: name = "VERDEF"; break;
1163 case DT_VERDEFNUM: name = "VERDEFNUM"; break;
1164 case DT_VERNEED: name = "VERNEED"; break;
1165 case DT_VERNEEDNUM: name = "VERNEEDNUM"; break;
94558834
L		 1166 case DT_AUXILIARY: name = "AUXILIARY"; stringp = true; break;
1167 case DT_USED: name = "USED"; break;
1168 case DT_FILTER: name = "FILTER"; stringp = true; break;
252b5132
RH		 1169 }
1170
1171 fprintf (f, " %-11s ", name);
1172 if (! stringp)
1173 fprintf (f, "0x%lx", (unsigned long) dyn.d_un.d_val);
1174 else
1175 {
1176 const char *string;
dc810e39 1177 unsigned int tagv = dyn.d_un.d_val;
252b5132 1178
dc810e39 1179 string = bfd_elf_string_from_elf_section (abfd, shlink, tagv);
252b5132
RH		 1180 if (string == NULL)
1181 goto error_return;
1182 fprintf (f, "%s", string);
1183 }
1184 fprintf (f, "\n");
1185 }
1186
1187 free (dynbuf);
1188 dynbuf = NULL;
1189 }
1190
1191 if ((elf_dynverdef (abfd) != 0 && elf_tdata (abfd)->verdef == NULL)
1192 || (elf_dynverref (abfd) != 0 && elf_tdata (abfd)->verref == NULL))
1193 {
1194 if (! _bfd_elf_slurp_version_tables (abfd))
1195 return false;
1196 }
1197
1198 if (elf_dynverdef (abfd) != 0)
1199 {
1200 Elf_Internal_Verdef *t;
1201
1202 fprintf (f, _("\nVersion definitions:\n"));
1203 for (t = elf_tdata (abfd)->verdef; t != NULL; t = t->vd_nextdef)
1204 {
1205 fprintf (f, "%d 0x%2.2x 0x%8.8lx %s\n", t->vd_ndx,
1206 t->vd_flags, t->vd_hash, t->vd_nodename);
1207 if (t->vd_auxptr->vda_nextptr != NULL)
1208 {
1209 Elf_Internal_Verdaux *a;
1210
1211 fprintf (f, "\t");
1212 for (a = t->vd_auxptr->vda_nextptr;
1213 a != NULL;
1214 a = a->vda_nextptr)
1215 fprintf (f, "%s ", a->vda_nodename);
1216 fprintf (f, "\n");
1217 }
1218 }
1219 }
1220
1221 if (elf_dynverref (abfd) != 0)
1222 {
1223 Elf_Internal_Verneed *t;
1224
1225 fprintf (f, _("\nVersion References:\n"));
1226 for (t = elf_tdata (abfd)->verref; t != NULL; t = t->vn_nextref)
1227 {
1228 Elf_Internal_Vernaux *a;
1229
1230 fprintf (f, _(" required from %s:\n"), t->vn_filename);
1231 for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr)
1232 fprintf (f, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a->vna_hash,
1233 a->vna_flags, a->vna_other, a->vna_nodename);
1234 }
1235 }
1236
1237 return true;
1238
1239 error_return:
1240 if (dynbuf != NULL)
1241 free (dynbuf);
1242 return false;
1243}
1244
1245/* Display ELF-specific fields of a symbol. */
1246
1247void
1248bfd_elf_print_symbol (abfd, filep, symbol, how)
1249 bfd *abfd;
1250 PTR filep;
1251 asymbol *symbol;
1252 bfd_print_symbol_type how;
1253{
1254 FILE *file = (FILE *) filep;
1255 switch (how)
1256 {
1257 case bfd_print_symbol_name:
1258 fprintf (file, "%s", symbol->name);
1259 break;
1260 case bfd_print_symbol_more:
1261 fprintf (file, "elf ");
60b89a18 1262 bfd_fprintf_vma (abfd, file, symbol->value);
252b5132
RH		 1263 fprintf (file, " %lx", (long) symbol->flags);
1264 break;
1265 case bfd_print_symbol_all:
1266 {
4e8a9624
AM		 1267 const char *section_name;
1268 const char *name = NULL;
587ff49e 1269 struct elf_backend_data *bed;
7a13edea 1270 unsigned char st_other;
dbb410c3 1271 bfd_vma val;
c044fabd 1272
252b5132 1273 section_name = symbol->section ? symbol->section->name : "(*none*)";
587ff49e
RH		 1274
1275 bed = get_elf_backend_data (abfd);
1276 if (bed->elf_backend_print_symbol_all)
c044fabd 1277 name = (*bed->elf_backend_print_symbol_all) (abfd, filep, symbol);
587ff49e
RH		 1278
1279 if (name == NULL)
1280 {
7ee38065 1281 name = symbol->name;
60b89a18 1282 bfd_print_symbol_vandf (abfd, (PTR) file, symbol);
587ff49e
RH		 1283 }
1284
252b5132
RH		 1285 fprintf (file, " %s\t", section_name);
1286 /* Print the "other" value for a symbol. For common symbols,
1287 we've already printed the size; now print the alignment.
1288 For other symbols, we have no specified alignment, and
1289 we've printed the address; now print the size. */
dbb410c3
AM		 1290 if (bfd_is_com_section (symbol->section))
1291 val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_value;
1292 else
1293 val = ((elf_symbol_type *) symbol)->internal_elf_sym.st_size;
1294 bfd_fprintf_vma (abfd, file, val);
252b5132
RH		 1295
1296 /* If we have version information, print it. */
1297 if (elf_tdata (abfd)->dynversym_section != 0
1298 && (elf_tdata (abfd)->dynverdef_section != 0
1299 || elf_tdata (abfd)->dynverref_section != 0))
1300 {
1301 unsigned int vernum;
1302 const char *version_string;
1303
1304 vernum = ((elf_symbol_type *) symbol)->version & VERSYM_VERSION;
1305
1306 if (vernum == 0)
1307 version_string = "";
1308 else if (vernum == 1)
1309 version_string = "Base";
1310 else if (vernum <= elf_tdata (abfd)->cverdefs)
1311 version_string =
1312 elf_tdata (abfd)->verdef[vernum - 1].vd_nodename;
1313 else
1314 {
1315 Elf_Internal_Verneed *t;
1316
1317 version_string = "";
1318 for (t = elf_tdata (abfd)->verref;
1319 t != NULL;
1320 t = t->vn_nextref)
1321 {
1322 Elf_Internal_Vernaux *a;
1323
1324 for (a = t->vn_auxptr; a != NULL; a = a->vna_nextptr)
1325 {
1326 if (a->vna_other == vernum)
1327 {
1328 version_string = a->vna_nodename;
1329 break;
1330 }
1331 }
1332 }
1333 }
1334
1335 if ((((elf_symbol_type *) symbol)->version & VERSYM_HIDDEN) == 0)
1336 fprintf (file, " %-11s", version_string);
1337 else
1338 {
1339 int i;
1340
1341 fprintf (file, " (%s)", version_string);
1342 for (i = 10 - strlen (version_string); i > 0; --i)
1343 putc (' ', file);
1344 }
1345 }
1346
1347 /* If the st_other field is not zero, print it. */
7a13edea 1348 st_other = ((elf_symbol_type *) symbol)->internal_elf_sym.st_other;
c044fabd 1349
7a13edea
NC		 1350 switch (st_other)
1351 {
1352 case 0: break;
1353 case STV_INTERNAL: fprintf (file, " .internal"); break;
1354 case STV_HIDDEN: fprintf (file, " .hidden"); break;
1355 case STV_PROTECTED: fprintf (file, " .protected"); break;
1356 default:
1357 /* Some other non-defined flags are also present, so print
1358 everything hex. */
1359 fprintf (file, " 0x%02x", (unsigned int) st_other);
1360 }
252b5132 1361
587ff49e 1362 fprintf (file, " %s", name);
252b5132
RH		 1363 }
1364 break;
1365 }
1366}
1367\f
1368/* Create an entry in an ELF linker hash table. */
1369
1370struct bfd_hash_entry *
1371_bfd_elf_link_hash_newfunc (entry, table, string)
1372 struct bfd_hash_entry *entry;
1373 struct bfd_hash_table *table;
1374 const char *string;
1375{
252b5132
RH		 1376 /* Allocate the structure if it has not already been allocated by a
1377 subclass. */
51b64d56
AM		 1378 if (entry == NULL)
1379 {
1380 entry = bfd_hash_allocate (table, sizeof (struct elf_link_hash_entry));
1381 if (entry == NULL)
1382 return entry;
1383 }
252b5132
RH		 1384
1385 /* Call the allocation method of the superclass. */
51b64d56
AM		 1386 entry = _bfd_link_hash_newfunc (entry, table, string);
1387 if (entry != NULL)
252b5132 1388 {
51b64d56
AM		 1389 struct elf_link_hash_entry *ret = (struct elf_link_hash_entry *) entry;
1390 struct elf_link_hash_table *htab = (struct elf_link_hash_table *) table;
1391
252b5132
RH		 1392 /* Set local fields. */
1393 ret->indx = -1;
1394 ret->size = 0;
1395 ret->dynindx = -1;
1396 ret->dynstr_index = 0;
1397 ret->weakdef = NULL;
51b64d56
AM		 1398 ret->got.refcount = htab->init_refcount;
1399 ret->plt.refcount = htab->init_refcount;
1400 ret->linker_section_pointer = NULL;
252b5132
RH		 1401 ret->verinfo.verdef = NULL;
1402 ret->vtable_entries_used = NULL;
1403 ret->vtable_entries_size = 0;
1404 ret->vtable_parent = NULL;
1405 ret->type = STT_NOTYPE;
1406 ret->other = 0;
1407 /* Assume that we have been called by a non-ELF symbol reader.
1408 This flag is then reset by the code which reads an ELF input
1409 file. This ensures that a symbol created by a non-ELF symbol
1410 reader will have the flag set correctly. */
1411 ret->elf_link_hash_flags = ELF_LINK_NON_ELF;
1412 }
1413
51b64d56 1414 return entry;
252b5132
RH		 1415}
1416
2920b85c 1417/* Copy data from an indirect symbol to its direct symbol, hiding the
0a991dfe 1418 old indirect symbol. Also used for copying flags to a weakdef. */
2920b85c 1419
c61b8717 1420void
b48fa14c
AM		 1421_bfd_elf_link_hash_copy_indirect (bed, dir, ind)
1422 struct elf_backend_data *bed;
2920b85c
RH		 1423 struct elf_link_hash_entry *dir, *ind;
1424{
3c3e9281 1425 bfd_signed_vma tmp;
b48fa14c 1426 bfd_signed_vma lowest_valid = bed->can_refcount;
3c3e9281 1427
2920b85c
RH		 1428 /* Copy down any references that we may have already seen to the
1429 symbol which just became indirect. */
1430
1431 dir->elf_link_hash_flags |=
1432 (ind->elf_link_hash_flags
1433 & (ELF_LINK_HASH_REF_DYNAMIC
1434 | ELF_LINK_HASH_REF_REGULAR
1435 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
1436 | ELF_LINK_NON_GOT_REF));
1437
1e370bd2 1438 if (ind->root.type != bfd_link_hash_indirect)
0a991dfe
AM		 1439 return;
1440
51b64d56 1441 /* Copy over the global and procedure linkage table refcount entries.
2920b85c 1442 These may have been already set up by a check_relocs routine. */
3c3e9281 1443 tmp = dir->got.refcount;
b48fa14c 1444 if (tmp < lowest_valid)
2920b85c 1445 {
51b64d56 1446 dir->got.refcount = ind->got.refcount;
3c3e9281 1447 ind->got.refcount = tmp;
2920b85c 1448 }
3c3e9281 1449 else
b48fa14c 1450 BFD_ASSERT (ind->got.refcount < lowest_valid);
2920b85c 1451
3c3e9281 1452 tmp = dir->plt.refcount;
b48fa14c 1453 if (tmp < lowest_valid)
2920b85c 1454 {
51b64d56 1455 dir->plt.refcount = ind->plt.refcount;
3c3e9281 1456 ind->plt.refcount = tmp;
2920b85c 1457 }
3c3e9281 1458 else
b48fa14c 1459 BFD_ASSERT (ind->plt.refcount < lowest_valid);
2920b85c
RH		 1460
1461 if (dir->dynindx == -1)
1462 {
1463 dir->dynindx = ind->dynindx;
1464 dir->dynstr_index = ind->dynstr_index;
1465 ind->dynindx = -1;
1466 ind->dynstr_index = 0;
1467 }
3c3e9281
AM		 1468 else
1469 BFD_ASSERT (ind->dynindx == -1);
2920b85c
RH		 1470}
1471
c61b8717 1472void
e5094212
AM		 1473_bfd_elf_link_hash_hide_symbol (info, h, force_local)
1474 struct bfd_link_info *info;
2920b85c 1475 struct elf_link_hash_entry *h;
e5094212 1476 boolean force_local;
2920b85c 1477{
2920b85c 1478 h->plt.offset = (bfd_vma) -1;
e5094212
AM		 1479 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1480 if (force_local)
1481 {
1482 h->elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL;
1483 if (h->dynindx != -1)
1484 {
1485 h->dynindx = -1;
1486 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
1487 h->dynstr_index);
1488 }
1489 }
2920b85c
RH		 1490}
1491
252b5132
RH		 1492/* Initialize an ELF linker hash table. */
1493
1494boolean
1495_bfd_elf_link_hash_table_init (table, abfd, newfunc)
1496 struct elf_link_hash_table *table;
1497 bfd *abfd;
1498 struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *,
1499 struct bfd_hash_table *,
1500 const char *));
1501{
8ea2e4bd
NC		 1502 boolean ret;
1503
252b5132
RH		 1504 table->dynamic_sections_created = false;
1505 table->dynobj = NULL;
51b64d56 1506 table->init_refcount = get_elf_backend_data (abfd)->can_refcount - 1;
252b5132
RH		 1507 /* The first dynamic symbol is a dummy. */
1508 table->dynsymcount = 1;
1509 table->dynstr = NULL;
1510 table->bucketcount = 0;
1511 table->needed = NULL;
a963dc6a 1512 table->runpath = NULL;
f5d44ba0 1513 table->loaded = NULL;
252b5132
RH		 1514 table->hgot = NULL;
1515 table->stab_info = NULL;
f5fa8ca2 1516 table->merge_info = NULL;
1ae00f9d 1517 table->dynlocal = NULL;
8ea2e4bd
NC		 1518 ret = _bfd_link_hash_table_init (& table->root, abfd, newfunc);
1519 table->root.type = bfd_link_elf_hash_table;
1520
1521 return ret;
252b5132
RH		 1522}
1523
1524/* Create an ELF linker hash table. */
1525
1526struct bfd_link_hash_table *
1527_bfd_elf_link_hash_table_create (abfd)
1528 bfd *abfd;
1529{
1530 struct elf_link_hash_table *ret;
dc810e39 1531 bfd_size_type amt = sizeof (struct elf_link_hash_table);
252b5132 1532
e2d34d7d 1533 ret = (struct elf_link_hash_table *) bfd_malloc (amt);
252b5132
RH		 1534 if (ret == (struct elf_link_hash_table *) NULL)
1535 return NULL;
1536
1537 if (! _bfd_elf_link_hash_table_init (ret, abfd, _bfd_elf_link_hash_newfunc))
1538 {
e2d34d7d 1539 free (ret);
252b5132
RH		 1540 return NULL;
1541 }
1542
1543 return &ret->root;
1544}
1545
1546/* This is a hook for the ELF emulation code in the generic linker to
1547 tell the backend linker what file name to use for the DT_NEEDED
1548 entry for a dynamic object. The generic linker passes name as an
1549 empty string to indicate that no DT_NEEDED entry should be made. */
1550
1551void
1552bfd_elf_set_dt_needed_name (abfd, name)
1553 bfd *abfd;
1554 const char *name;
1555{
1556 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
1557 && bfd_get_format (abfd) == bfd_object)
1558 elf_dt_name (abfd) = name;
1559}
1560
74816898
L		 1561void
1562bfd_elf_set_dt_needed_soname (abfd, name)
1563 bfd *abfd;
1564 const char *name;
1565{
1566 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
1567 && bfd_get_format (abfd) == bfd_object)
1568 elf_dt_soname (abfd) = name;
1569}
1570
252b5132
RH		 1571/* Get the list of DT_NEEDED entries for a link. This is a hook for
1572 the linker ELF emulation code. */
1573
1574struct bfd_link_needed_list *
1575bfd_elf_get_needed_list (abfd, info)
7442e600 1576 bfd *abfd ATTRIBUTE_UNUSED;
252b5132
RH		 1577 struct bfd_link_info *info;
1578{
1579 if (info->hash->creator->flavour != bfd_target_elf_flavour)
1580 return NULL;
1581 return elf_hash_table (info)->needed;
1582}
1583
a963dc6a
L		 1584/* Get the list of DT_RPATH/DT_RUNPATH entries for a link. This is a
1585 hook for the linker ELF emulation code. */
1586
1587struct bfd_link_needed_list *
1588bfd_elf_get_runpath_list (abfd, info)
1589 bfd *abfd ATTRIBUTE_UNUSED;
1590 struct bfd_link_info *info;
1591{
1592 if (info->hash->creator->flavour != bfd_target_elf_flavour)
1593 return NULL;
1594 return elf_hash_table (info)->runpath;
1595}
1596
252b5132
RH		 1597/* Get the name actually used for a dynamic object for a link. This
1598 is the SONAME entry if there is one. Otherwise, it is the string
1599 passed to bfd_elf_set_dt_needed_name, or it is the filename. */
1600
1601const char *
1602bfd_elf_get_dt_soname (abfd)
1603 bfd *abfd;
1604{
1605 if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
1606 && bfd_get_format (abfd) == bfd_object)
1607 return elf_dt_name (abfd);
1608 return NULL;
1609}
1610
1611/* Get the list of DT_NEEDED entries from a BFD. This is a hook for
1612 the ELF linker emulation code. */
1613
1614boolean
1615bfd_elf_get_bfd_needed_list (abfd, pneeded)
1616 bfd *abfd;
1617 struct bfd_link_needed_list **pneeded;
1618{
1619 asection *s;
1620 bfd_byte *dynbuf = NULL;
1621 int elfsec;
dc810e39 1622 unsigned long shlink;
252b5132
RH		 1623 bfd_byte *extdyn, *extdynend;
1624 size_t extdynsize;
1625 void (*swap_dyn_in) PARAMS ((bfd *, const PTR, Elf_Internal_Dyn *));
1626
1627 *pneeded = NULL;
1628
1629 if (bfd_get_flavour (abfd) != bfd_target_elf_flavour
1630 || bfd_get_format (abfd) != bfd_object)
1631 return true;
1632
1633 s = bfd_get_section_by_name (abfd, ".dynamic");
1634 if (s == NULL || s->_raw_size == 0)
1635 return true;
1636
1637 dynbuf = (bfd_byte *) bfd_malloc (s->_raw_size);
1638 if (dynbuf == NULL)
1639 goto error_return;
1640
1641 if (! bfd_get_section_contents (abfd, s, (PTR) dynbuf, (file_ptr) 0,
1642 s->_raw_size))
1643 goto error_return;
1644
1645 elfsec = _bfd_elf_section_from_bfd_section (abfd, s);
1646 if (elfsec == -1)
1647 goto error_return;
1648
dc810e39 1649 shlink = elf_elfsections (abfd)[elfsec]->sh_link;
252b5132
RH		 1650
1651 extdynsize = get_elf_backend_data (abfd)->s->sizeof_dyn;
1652 swap_dyn_in = get_elf_backend_data (abfd)->s->swap_dyn_in;
1653
1654 extdyn = dynbuf;
1655 extdynend = extdyn + s->_raw_size;
1656 for (; extdyn < extdynend; extdyn += extdynsize)
1657 {
1658 Elf_Internal_Dyn dyn;
1659
1660 (*swap_dyn_in) (abfd, (PTR) extdyn, &dyn);
1661
1662 if (dyn.d_tag == DT_NULL)
1663 break;
1664
1665 if (dyn.d_tag == DT_NEEDED)
1666 {
1667 const char *string;
1668 struct bfd_link_needed_list *l;
dc810e39
AM		 1669 unsigned int tagv = dyn.d_un.d_val;
1670 bfd_size_type amt;
252b5132 1671
dc810e39 1672 string = bfd_elf_string_from_elf_section (abfd, shlink, tagv);
252b5132
RH		 1673 if (string == NULL)
1674 goto error_return;
1675
dc810e39
AM		 1676 amt = sizeof *l;
1677 l = (struct bfd_link_needed_list *) bfd_alloc (abfd, amt);
252b5132
RH		 1678 if (l == NULL)
1679 goto error_return;
1680
1681 l->by = abfd;
1682 l->name = string;
1683 l->next = *pneeded;
1684 *pneeded = l;
1685 }
1686 }
1687
1688 free (dynbuf);
1689
1690 return true;
1691
1692 error_return:
1693 if (dynbuf != NULL)
1694 free (dynbuf);
1695 return false;
1696}
1697\f
1698/* Allocate an ELF string table--force the first byte to be zero. */
1699
1700struct bfd_strtab_hash *
1701_bfd_elf_stringtab_init ()
1702{
1703 struct bfd_strtab_hash *ret;
1704
1705 ret = _bfd_stringtab_init ();
1706 if (ret != NULL)
1707 {
1708 bfd_size_type loc;
1709
1710 loc = _bfd_stringtab_add (ret, "", true, false);
1711 BFD_ASSERT (loc == 0 || loc == (bfd_size_type) -1);
1712 if (loc == (bfd_size_type) -1)
1713 {
1714 _bfd_stringtab_free (ret);
1715 ret = NULL;
1716 }
1717 }
1718 return ret;
1719}
1720\f
1721/* ELF .o/exec file reading */
1722
c044fabd 1723/* Create a new bfd section from an ELF section header. */
252b5132
RH		 1724
1725boolean
1726bfd_section_from_shdr (abfd, shindex)
1727 bfd *abfd;
1728 unsigned int shindex;
1729{
1730 Elf_Internal_Shdr *hdr = elf_elfsections (abfd)[shindex];
1731 Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd);
1732 struct elf_backend_data *bed = get_elf_backend_data (abfd);
90937f86 1733 const char *name;
252b5132
RH		 1734
1735 name = elf_string_from_elf_strtab (abfd, hdr->sh_name);
1736
1737 switch (hdr->sh_type)
1738 {
1739 case SHT_NULL:
1740 /* Inactive section. Throw it away. */
1741 return true;
1742
1743 case SHT_PROGBITS: /* Normal section with contents. */
252b5132
RH		 1744 case SHT_NOBITS: /* .bss section. */
1745 case SHT_HASH: /* .hash section. */
1746 case SHT_NOTE: /* .note section. */
25e27870
L		 1747 case SHT_INIT_ARRAY: /* .init_array section. */
1748 case SHT_FINI_ARRAY: /* .fini_array section. */
1749 case SHT_PREINIT_ARRAY: /* .preinit_array section. */
252b5132
RH		 1750 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1751
797fc050
AM		 1752 case SHT_DYNAMIC: /* Dynamic linking information. */
1753 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
1754 return false;
1755 if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_STRTAB)
1756 {
1757 Elf_Internal_Shdr *dynsymhdr;
1758
1759 /* The shared libraries distributed with hpux11 have a bogus
1760 sh_link field for the ".dynamic" section. Find the
1761 string table for the ".dynsym" section instead. */
1762 if (elf_dynsymtab (abfd) != 0)
1763 {
1764 dynsymhdr = elf_elfsections (abfd)[elf_dynsymtab (abfd)];
1765 hdr->sh_link = dynsymhdr->sh_link;
1766 }
1767 else
1768 {
1769 unsigned int i, num_sec;
1770
1771 num_sec = elf_numsections (abfd);
1772 for (i = 1; i < num_sec; i++)
1773 {
1774 dynsymhdr = elf_elfsections (abfd)[i];
1775 if (dynsymhdr->sh_type == SHT_DYNSYM)
1776 {
1777 hdr->sh_link = dynsymhdr->sh_link;
1778 break;
1779 }
1780 }
1781 }
1782 }
1783 break;
1784
252b5132
RH		 1785 case SHT_SYMTAB: /* A symbol table */
1786 if (elf_onesymtab (abfd) == shindex)
1787 return true;
1788
1789 BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym);
1790 BFD_ASSERT (elf_onesymtab (abfd) == 0);
1791 elf_onesymtab (abfd) = shindex;
1792 elf_tdata (abfd)->symtab_hdr = *hdr;
1793 elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->symtab_hdr;
1794 abfd->flags |= HAS_SYMS;
1795
1796 /* Sometimes a shared object will map in the symbol table. If
1797 SHF_ALLOC is set, and this is a shared object, then we also
1798 treat this section as a BFD section. We can not base the
1799 decision purely on SHF_ALLOC, because that flag is sometimes
1800 set in a relocateable object file, which would confuse the
1801 linker. */
1802 if ((hdr->sh_flags & SHF_ALLOC) != 0
1803 && (abfd->flags & DYNAMIC) != 0
1804 && ! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
1805 return false;
1806
1807 return true;
1808
1809 case SHT_DYNSYM: /* A dynamic symbol table */
1810 if (elf_dynsymtab (abfd) == shindex)
1811 return true;
1812
1813 BFD_ASSERT (hdr->sh_entsize == bed->s->sizeof_sym);
1814 BFD_ASSERT (elf_dynsymtab (abfd) == 0);
1815 elf_dynsymtab (abfd) = shindex;
1816 elf_tdata (abfd)->dynsymtab_hdr = *hdr;
1817 elf_elfsections (abfd)[shindex] = hdr = &elf_tdata (abfd)->dynsymtab_hdr;
1818 abfd->flags |= HAS_SYMS;
1819
1820 /* Besides being a symbol table, we also treat this as a regular
1821 section, so that objcopy can handle it. */
1822 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1823
9ad5cbcf
AM		 1824 case SHT_SYMTAB_SHNDX: /* Symbol section indices when >64k sections */
1825 if (elf_symtab_shndx (abfd) == shindex)
1826 return true;
1827
1828 /* Get the associated symbol table. */
1829 if (! bfd_section_from_shdr (abfd, hdr->sh_link)
1830 || hdr->sh_link != elf_onesymtab (abfd))
1831 return false;
1832
1833 elf_symtab_shndx (abfd) = shindex;
1834 elf_tdata (abfd)->symtab_shndx_hdr = *hdr;
1835 elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->symtab_shndx_hdr;
1836 return true;
1837
252b5132
RH		 1838 case SHT_STRTAB: /* A string table */
1839 if (hdr->bfd_section != NULL)
1840 return true;
1841 if (ehdr->e_shstrndx == shindex)
1842 {
1843 elf_tdata (abfd)->shstrtab_hdr = *hdr;
1844 elf_elfsections (abfd)[shindex] = &elf_tdata (abfd)->shstrtab_hdr;
1845 return true;
1846 }
1847 {
9ad5cbcf 1848 unsigned int i, num_sec;
252b5132 1849
9ad5cbcf
AM		 1850 num_sec = elf_numsections (abfd);
1851 for (i = 1; i < num_sec; i++)
252b5132
RH		 1852 {
1853 Elf_Internal_Shdr *hdr2 = elf_elfsections (abfd)[i];
1854 if (hdr2->sh_link == shindex)
1855 {
1856 if (! bfd_section_from_shdr (abfd, i))
1857 return false;
1858 if (elf_onesymtab (abfd) == i)
1859 {
1860 elf_tdata (abfd)->strtab_hdr = *hdr;
1861 elf_elfsections (abfd)[shindex] =
1862 &elf_tdata (abfd)->strtab_hdr;
1863 return true;
1864 }
1865 if (elf_dynsymtab (abfd) == i)
1866 {
1867 elf_tdata (abfd)->dynstrtab_hdr = *hdr;
1868 elf_elfsections (abfd)[shindex] = hdr =
1869 &elf_tdata (abfd)->dynstrtab_hdr;
1870 /* We also treat this as a regular section, so
1871 that objcopy can handle it. */
1872 break;
1873 }
1874#if 0 /* Not handling other string tables specially right now. */
1875 hdr2 = elf_elfsections (abfd)[i]; /* in case it moved */
1876 /* We have a strtab for some random other section. */
1877 newsect = (asection *) hdr2->bfd_section;
1878 if (!newsect)
1879 break;
1880 hdr->bfd_section = newsect;
1881 hdr2 = &elf_section_data (newsect)->str_hdr;
1882 *hdr2 = *hdr;
1883 elf_elfsections (abfd)[shindex] = hdr2;
1884#endif
1885 }
1886 }
1887 }
1888
1889 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1890
1891 case SHT_REL:
1892 case SHT_RELA:
1893 /* *These* do a lot of work -- but build no sections! */
1894 {
1895 asection *target_sect;
1896 Elf_Internal_Shdr *hdr2;
9ad5cbcf 1897 unsigned int num_sec = elf_numsections (abfd);
252b5132 1898
03ae5f59 1899 /* Check for a bogus link to avoid crashing. */
9ad5cbcf
AM		 1900 if ((hdr->sh_link >= SHN_LORESERVE && hdr->sh_link <= SHN_HIRESERVE)
1901 || hdr->sh_link >= num_sec)
03ae5f59
ILT		 1902 {
1903 ((*_bfd_error_handler)
1904 (_("%s: invalid link %lu for reloc section %s (index %u)"),
8f615d07 1905 bfd_archive_filename (abfd), hdr->sh_link, name, shindex));
03ae5f59
ILT		 1906 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1907 }
1908
252b5132
RH		 1909 /* For some incomprehensible reason Oracle distributes
1910 libraries for Solaris in which some of the objects have
1911 bogus sh_link fields. It would be nice if we could just
1912 reject them, but, unfortunately, some people need to use
1913 them. We scan through the section headers; if we find only
1914 one suitable symbol table, we clobber the sh_link to point
1915 to it. I hope this doesn't break anything. */
1916 if (elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_SYMTAB
1917 && elf_elfsections (abfd)[hdr->sh_link]->sh_type != SHT_DYNSYM)
1918 {
9ad5cbcf 1919 unsigned int scan;
252b5132
RH		 1920 int found;
1921
1922 found = 0;
9ad5cbcf 1923 for (scan = 1; scan < num_sec; scan++)
252b5132
RH		 1924 {
1925 if (elf_elfsections (abfd)[scan]->sh_type == SHT_SYMTAB
1926 || elf_elfsections (abfd)[scan]->sh_type == SHT_DYNSYM)
1927 {
1928 if (found != 0)
1929 {
1930 found = 0;
1931 break;
1932 }
1933 found = scan;
1934 }
1935 }
1936 if (found != 0)
1937 hdr->sh_link = found;
1938 }
1939
1940 /* Get the symbol table. */
1941 if (elf_elfsections (abfd)[hdr->sh_link]->sh_type == SHT_SYMTAB
1942 && ! bfd_section_from_shdr (abfd, hdr->sh_link))
1943 return false;
1944
1945 /* If this reloc section does not use the main symbol table we
1946 don't treat it as a reloc section. BFD can't adequately
1947 represent such a section, so at least for now, we don't
c044fabd 1948 try. We just present it as a normal section. We also
60bcf0fa 1949 can't use it as a reloc section if it points to the null
c044fabd 1950 section. */
60bcf0fa 1951 if (hdr->sh_link != elf_onesymtab (abfd) || hdr->sh_info == SHN_UNDEF)
252b5132
RH		 1952 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1953
1954 if (! bfd_section_from_shdr (abfd, hdr->sh_info))
1955 return false;
1956 target_sect = bfd_section_from_elf_index (abfd, hdr->sh_info);
1957 if (target_sect == NULL)
1958 return false;
1959
1960 if ((target_sect->flags & SEC_RELOC) == 0
1961 || target_sect->reloc_count == 0)
1962 hdr2 = &elf_section_data (target_sect)->rel_hdr;
1963 else
1964 {
dc810e39 1965 bfd_size_type amt;
252b5132 1966 BFD_ASSERT (elf_section_data (target_sect)->rel_hdr2 == NULL);
dc810e39
AM		 1967 amt = sizeof (*hdr2);
1968 hdr2 = (Elf_Internal_Shdr *) bfd_alloc (abfd, amt);
252b5132
RH		 1969 elf_section_data (target_sect)->rel_hdr2 = hdr2;
1970 }
1971 *hdr2 = *hdr;
1972 elf_elfsections (abfd)[shindex] = hdr2;
d9bc7a44 1973 target_sect->reloc_count += NUM_SHDR_ENTRIES (hdr);
252b5132
RH		 1974 target_sect->flags |= SEC_RELOC;
1975 target_sect->relocation = NULL;
1976 target_sect->rel_filepos = hdr->sh_offset;
bf572ba0
MM		 1977 /* In the section to which the relocations apply, mark whether
1978 its relocations are of the REL or RELA variety. */
72730e0c
AM		 1979 if (hdr->sh_size != 0)
1980 elf_section_data (target_sect)->use_rela_p
1981 = (hdr->sh_type == SHT_RELA);
252b5132
RH		 1982 abfd->flags |= HAS_RELOC;
1983 return true;
1984 }
1985 break;
1986
1987 case SHT_GNU_verdef:
1988 elf_dynverdef (abfd) = shindex;
1989 elf_tdata (abfd)->dynverdef_hdr = *hdr;
1990 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1991 break;
1992
1993 case SHT_GNU_versym:
1994 elf_dynversym (abfd) = shindex;
1995 elf_tdata (abfd)->dynversym_hdr = *hdr;
1996 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
1997 break;
1998
1999 case SHT_GNU_verneed:
2000 elf_dynverref (abfd) = shindex;
2001 elf_tdata (abfd)->dynverref_hdr = *hdr;
2002 return _bfd_elf_make_section_from_shdr (abfd, hdr, name);
2003 break;
2004
2005 case SHT_SHLIB:
2006 return true;
2007
dbb410c3 2008 case SHT_GROUP:
b885599b
AM		 2009 /* We need a BFD section for objcopy and relocatable linking,
2010 and it's handy to have the signature available as the section
2011 name. */
2012 name = group_signature (abfd, hdr);
2013 if (name == NULL)
2014 return false;
dbb410c3
AM		 2015 if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name))
2016 return false;
2017 if (hdr->contents != NULL)
2018 {
2019 Elf_Internal_Group *idx = (Elf_Internal_Group *) hdr->contents;
2020 unsigned int n_elt = hdr->sh_size / 4;
2021 asection *s;
2022
b885599b
AM		 2023 if (idx->flags & GRP_COMDAT)
2024 hdr->bfd_section->flags
2025 |= SEC_LINK_ONCE | SEC_LINK_DUPLICATES_DISCARD;
2026
dbb410c3
AM		 2027 while (--n_elt != 0)
2028 if ((s = (++idx)->shdr->bfd_section) != NULL
945906ff 2029 && elf_next_in_group (s) != NULL)
dbb410c3 2030 {
945906ff 2031 elf_next_in_group (hdr->bfd_section) = s;
dbb410c3
AM		 2032 break;
2033 }
2034 }
2035 break;
2036
252b5132
RH		 2037 default:
2038 /* Check for any processor-specific section types. */
2039 {
2040 if (bed->elf_backend_section_from_shdr)
2041 (*bed->elf_backend_section_from_shdr) (abfd, hdr, name);
2042 }
2043 break;
2044 }
2045
2046 return true;
2047}
2048
ec338859
AM		 2049/* Return the section for the local symbol specified by ABFD, R_SYMNDX.
2050 Return SEC for sections that have no elf section, and NULL on error. */
2051
2052asection *
2053bfd_section_from_r_symndx (abfd, cache, sec, r_symndx)
2054 bfd *abfd;
2055 struct sym_sec_cache *cache;
2056 asection *sec;
2057 unsigned long r_symndx;
2058{
ec338859 2059 Elf_Internal_Shdr *symtab_hdr;
6cdc0ccc
AM		 2060 unsigned char esym[sizeof (Elf64_External_Sym)];
2061 Elf_External_Sym_Shndx eshndx;
2062 Elf_Internal_Sym isym;
ec338859
AM		 2063 unsigned int ent = r_symndx % LOCAL_SYM_CACHE_SIZE;
2064
2065 if (cache->abfd == abfd && cache->indx[ent] == r_symndx)
2066 return cache->sec[ent];
2067
2068 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
6cdc0ccc
AM		 2069 if (bfd_elf_get_elf_syms (abfd, symtab_hdr, 1, r_symndx,
2070 &isym, esym, &eshndx) == NULL)
ec338859 2071 return NULL;
9ad5cbcf 2072
ec338859
AM		 2073 if (cache->abfd != abfd)
2074 {
2075 memset (cache->indx, -1, sizeof (cache->indx));
2076 cache->abfd = abfd;
2077 }
2078 cache->indx[ent] = r_symndx;
2079 cache->sec[ent] = sec;
6cdc0ccc 2080 if (isym.st_shndx < SHN_LORESERVE || isym.st_shndx > SHN_HIRESERVE)
ec338859
AM		 2081 {
2082 asection *s;
6cdc0ccc 2083 s = bfd_section_from_elf_index (abfd, isym.st_shndx);
ec338859
AM		 2084 if (s != NULL)
2085 cache->sec[ent] = s;
2086 }
2087 return cache->sec[ent];
2088}
2089
252b5132
RH		 2090/* Given an ELF section number, retrieve the corresponding BFD
2091 section. */
2092
2093asection *
2094bfd_section_from_elf_index (abfd, index)
2095 bfd *abfd;
2096 unsigned int index;
2097{
9ad5cbcf 2098 if (index >= elf_numsections (abfd))
252b5132
RH		 2099 return NULL;
2100 return elf_elfsections (abfd)[index]->bfd_section;
2101}
2102
2103boolean
2104_bfd_elf_new_section_hook (abfd, sec)
2105 bfd *abfd;
2106 asection *sec;
2107{
2108 struct bfd_elf_section_data *sdata;
dc810e39 2109 bfd_size_type amt = sizeof (*sdata);
252b5132 2110
dc810e39 2111 sdata = (struct bfd_elf_section_data *) bfd_zalloc (abfd, amt);
252b5132
RH		 2112 if (!sdata)
2113 return false;
2114 sec->used_by_bfd = (PTR) sdata;
bf572ba0
MM		 2115
2116 /* Indicate whether or not this section should use RELA relocations. */
c044fabd 2117 sdata->use_rela_p
bf572ba0
MM		 2118 = get_elf_backend_data (abfd)->default_use_rela_p;
2119
252b5132
RH		 2120 return true;
2121}
2122
2123/* Create a new bfd section from an ELF program header.
2124
2125 Since program segments have no names, we generate a synthetic name
2126 of the form segment<NUM>, where NUM is generally the index in the
2127 program header table. For segments that are split (see below) we
2128 generate the names segment<NUM>a and segment<NUM>b.
2129
2130 Note that some program segments may have a file size that is different than
2131 (less than) the memory size. All this means is that at execution the
2132 system must allocate the amount of memory specified by the memory size,
2133 but only initialize it with the first "file size" bytes read from the
2134 file. This would occur for example, with program segments consisting
2135 of combined data+bss.
2136
2137 To handle the above situation, this routine generates TWO bfd sections
2138 for the single program segment. The first has the length specified by
2139 the file size of the segment, and the second has the length specified
2140 by the difference between the two sizes. In effect, the segment is split
2141 into it's initialized and uninitialized parts.
2142
2143 */
2144
2145boolean
20cfcaae 2146_bfd_elf_make_section_from_phdr (abfd, hdr, index, typename)
252b5132
RH		 2147 bfd *abfd;
2148 Elf_Internal_Phdr *hdr;
2149 int index;
20cfcaae 2150 const char *typename;
252b5132
RH		 2151{
2152 asection *newsect;
2153 char *name;
2154 char namebuf[64];
d4c88bbb 2155 size_t len;
252b5132
RH		 2156 int split;
2157
2158 split = ((hdr->p_memsz > 0)
2159 && (hdr->p_filesz > 0)
2160 && (hdr->p_memsz > hdr->p_filesz));
27ac83bf 2161 sprintf (namebuf, "%s%d%s", typename, index, split ? "a" : "");
d4c88bbb
AM		 2162 len = strlen (namebuf) + 1;
2163 name = bfd_alloc (abfd, (bfd_size_type) len);
252b5132
RH		 2164 if (!name)
2165 return false;
d4c88bbb 2166 memcpy (name, namebuf, len);
252b5132
RH		 2167 newsect = bfd_make_section (abfd, name);
2168 if (newsect == NULL)
2169 return false;
2170 newsect->vma = hdr->p_vaddr;
2171 newsect->lma = hdr->p_paddr;
2172 newsect->_raw_size = hdr->p_filesz;
2173 newsect->filepos = hdr->p_offset;
2174 newsect->flags |= SEC_HAS_CONTENTS;
2175 if (hdr->p_type == PT_LOAD)
2176 {
2177 newsect->flags |= SEC_ALLOC;
2178 newsect->flags |= SEC_LOAD;
2179 if (hdr->p_flags & PF_X)
2180 {
2181 /* FIXME: all we known is that it has execute PERMISSION,
c044fabd 2182 may be data. */
252b5132
RH		 2183 newsect->flags |= SEC_CODE;
2184 }
2185 }
2186 if (!(hdr->p_flags & PF_W))
2187 {
2188 newsect->flags |= SEC_READONLY;
2189 }
2190
2191 if (split)
2192 {
27ac83bf 2193 sprintf (namebuf, "%s%db", typename, index);
d4c88bbb
AM		 2194 len = strlen (namebuf) + 1;
2195 name = bfd_alloc (abfd, (bfd_size_type) len);
252b5132
RH		 2196 if (!name)
2197 return false;
d4c88bbb 2198 memcpy (name, namebuf, len);
252b5132
RH		 2199 newsect = bfd_make_section (abfd, name);
2200 if (newsect == NULL)
2201 return false;
2202 newsect->vma = hdr->p_vaddr + hdr->p_filesz;
2203 newsect->lma = hdr->p_paddr + hdr->p_filesz;
2204 newsect->_raw_size = hdr->p_memsz - hdr->p_filesz;
2205 if (hdr->p_type == PT_LOAD)
2206 {
2207 newsect->flags |= SEC_ALLOC;
2208 if (hdr->p_flags & PF_X)
2209 newsect->flags |= SEC_CODE;
2210 }
2211 if (!(hdr->p_flags & PF_W))
2212 newsect->flags |= SEC_READONLY;
2213 }
2214
2215 return true;
2216}
2217
20cfcaae
NC		 2218boolean
2219bfd_section_from_phdr (abfd, hdr, index)
2220 bfd *abfd;
2221 Elf_Internal_Phdr *hdr;
2222 int index;
2223{
2224 struct elf_backend_data *bed;
2225
2226 switch (hdr->p_type)
2227 {
2228 case PT_NULL:
2229 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "null");
2230
2231 case PT_LOAD:
2232 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "load");
2233
2234 case PT_DYNAMIC:
2235 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "dynamic");
2236
2237 case PT_INTERP:
2238 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "interp");
2239
2240 case PT_NOTE:
2241 if (! _bfd_elf_make_section_from_phdr (abfd, hdr, index, "note"))
2242 return false;
dc810e39 2243 if (! elfcore_read_notes (abfd, (file_ptr) hdr->p_offset, hdr->p_filesz))
20cfcaae
NC		 2244 return false;
2245 return true;
2246
2247 case PT_SHLIB:
2248 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "shlib");
2249
2250 case PT_PHDR:
2251 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "phdr");
2252
2253 default:
2254 /* Check for any processor-specific program segment types.
c044fabd 2255 If no handler for them, default to making "segment" sections. */
20cfcaae
NC		 2256 bed = get_elf_backend_data (abfd);
2257 if (bed->elf_backend_section_from_phdr)
2258 return (*bed->elf_backend_section_from_phdr) (abfd, hdr, index);
2259 else
2260 return _bfd_elf_make_section_from_phdr (abfd, hdr, index, "segment");
2261 }
2262}
2263
23bc299b
MM		 2264/* Initialize REL_HDR, the section-header for new section, containing
2265 relocations against ASECT. If USE_RELA_P is true, we use RELA
2266 relocations; otherwise, we use REL relocations. */
2267
2268boolean
2269_bfd_elf_init_reloc_shdr (abfd, rel_hdr, asect, use_rela_p)
2270 bfd *abfd;
2271 Elf_Internal_Shdr *rel_hdr;
2272 asection *asect;
2273 boolean use_rela_p;
2274{
2275 char *name;
dc810e39
AM		 2276 struct elf_backend_data *bed = get_elf_backend_data (abfd);
2277 bfd_size_type amt = sizeof ".rela" + strlen (asect->name);
23bc299b 2278
dc810e39 2279 name = bfd_alloc (abfd, amt);
23bc299b
MM		 2280 if (name == NULL)
2281 return false;
2282 sprintf (name, "%s%s", use_rela_p ? ".rela" : ".rel", asect->name);
2283 rel_hdr->sh_name =
2b0f7ef9
JJ		 2284 (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd), name,
2285 false);
23bc299b
MM		 2286 if (rel_hdr->sh_name == (unsigned int) -1)
2287 return false;
2288 rel_hdr->sh_type = use_rela_p ? SHT_RELA : SHT_REL;
2289 rel_hdr->sh_entsize = (use_rela_p
2290 ? bed->s->sizeof_rela
2291 : bed->s->sizeof_rel);
2292 rel_hdr->sh_addralign = bed->s->file_align;
2293 rel_hdr->sh_flags = 0;
2294 rel_hdr->sh_addr = 0;
2295 rel_hdr->sh_size = 0;
2296 rel_hdr->sh_offset = 0;
2297
2298 return true;
2299}
2300
252b5132
RH		 2301/* Set up an ELF internal section header for a section. */
2302
252b5132
RH		 2303static void
2304elf_fake_sections (abfd, asect, failedptrarg)
2305 bfd *abfd;
2306 asection *asect;
2307 PTR failedptrarg;
2308{
2309 struct elf_backend_data *bed = get_elf_backend_data (abfd);
2310 boolean *failedptr = (boolean *) failedptrarg;
2311 Elf_Internal_Shdr *this_hdr;
2312
2313 if (*failedptr)
2314 {
2315 /* We already failed; just get out of the bfd_map_over_sections
2316 loop. */
2317 return;
2318 }
2319
2320 this_hdr = &elf_section_data (asect)->this_hdr;
2321
2b0f7ef9
JJ		 2322 this_hdr->sh_name = (unsigned long) _bfd_elf_strtab_add (elf_shstrtab (abfd),
2323 asect->name, false);
252b5132
RH		 2324 if (this_hdr->sh_name == (unsigned long) -1)
2325 {
2326 *failedptr = true;
2327 return;
2328 }
2329
2330 this_hdr->sh_flags = 0;
2331
2332 if ((asect->flags & SEC_ALLOC) != 0
2333 || asect->user_set_vma)
2334 this_hdr->sh_addr = asect->vma;
2335 else
2336 this_hdr->sh_addr = 0;
2337
2338 this_hdr->sh_offset = 0;
2339 this_hdr->sh_size = asect->_raw_size;
2340 this_hdr->sh_link = 0;
2341 this_hdr->sh_addralign = 1 << asect->alignment_power;
2342 /* The sh_entsize and sh_info fields may have been set already by
2343 copy_private_section_data. */
2344
2345 this_hdr->bfd_section = asect;
2346 this_hdr->contents = NULL;
2347
2348 /* FIXME: This should not be based on section names. */
2349 if (strcmp (asect->name, ".dynstr") == 0)
2350 this_hdr->sh_type = SHT_STRTAB;
2351 else if (strcmp (asect->name, ".hash") == 0)
2352 {
2353 this_hdr->sh_type = SHT_HASH;
c7ac6ff8 2354 this_hdr->sh_entsize = bed->s->sizeof_hash_entry;
252b5132
RH		 2355 }
2356 else if (strcmp (asect->name, ".dynsym") == 0)
2357 {
2358 this_hdr->sh_type = SHT_DYNSYM;
2359 this_hdr->sh_entsize = bed->s->sizeof_sym;
2360 }
2361 else if (strcmp (asect->name, ".dynamic") == 0)
2362 {
2363 this_hdr->sh_type = SHT_DYNAMIC;
2364 this_hdr->sh_entsize = bed->s->sizeof_dyn;
2365 }
a9d024b8 2366 else if (strncmp (asect->name, ".rela", 5) == 0
bf572ba0 2367 && get_elf_backend_data (abfd)->may_use_rela_p)
252b5132
RH		 2368 {
2369 this_hdr->sh_type = SHT_RELA;
2370 this_hdr->sh_entsize = bed->s->sizeof_rela;
2371 }
a9d024b8 2372 else if (strncmp (asect->name, ".rel", 4) == 0
bf572ba0 2373 && get_elf_backend_data (abfd)->may_use_rel_p)
252b5132
RH		 2374 {
2375 this_hdr->sh_type = SHT_REL;
2376 this_hdr->sh_entsize = bed->s->sizeof_rel;
2377 }
25e27870
L		 2378 else if (strcmp (asect->name, ".init_array") == 0)
2379 this_hdr->sh_type = SHT_INIT_ARRAY;
2380 else if (strcmp (asect->name, ".fini_array") == 0)
2381 this_hdr->sh_type = SHT_FINI_ARRAY;
2382 else if (strcmp (asect->name, ".preinit_array") == 0)
2383 this_hdr->sh_type = SHT_PREINIT_ARRAY;
252b5132
RH		 2384 else if (strncmp (asect->name, ".note", 5) == 0)
2385 this_hdr->sh_type = SHT_NOTE;
2386 else if (strncmp (asect->name, ".stab", 5) == 0
2387 && strcmp (asect->name + strlen (asect->name) - 3, "str") == 0)
2388 this_hdr->sh_type = SHT_STRTAB;
2389 else if (strcmp (asect->name, ".gnu.version") == 0)
2390 {
2391 this_hdr->sh_type = SHT_GNU_versym;
2392 this_hdr->sh_entsize = sizeof (Elf_External_Versym);
2393 }
2394 else if (strcmp (asect->name, ".gnu.version_d") == 0)
2395 {
2396 this_hdr->sh_type = SHT_GNU_verdef;
2397 this_hdr->sh_entsize = 0;
2398 /* objcopy or strip will copy over sh_info, but may not set
2399 cverdefs. The linker will set cverdefs, but sh_info will be
2400 zero. */
2401 if (this_hdr->sh_info == 0)
2402 this_hdr->sh_info = elf_tdata (abfd)->cverdefs;
2403 else
2404 BFD_ASSERT (elf_tdata (abfd)->cverdefs == 0
2405 || this_hdr->sh_info == elf_tdata (abfd)->cverdefs);
2406 }
2407 else if (strcmp (asect->name, ".gnu.version_r") == 0)
2408 {
2409 this_hdr->sh_type = SHT_GNU_verneed;
2410 this_hdr->sh_entsize = 0;
2411 /* objcopy or strip will copy over sh_info, but may not set
2412 cverrefs. The linker will set cverrefs, but sh_info will be
2413 zero. */
2414 if (this_hdr->sh_info == 0)
2415 this_hdr->sh_info = elf_tdata (abfd)->cverrefs;
2416 else
2417 BFD_ASSERT (elf_tdata (abfd)->cverrefs == 0
2418 || this_hdr->sh_info == elf_tdata (abfd)->cverrefs);
2419 }
dbb410c3
AM		 2420 else if ((asect->flags & SEC_GROUP) != 0)
2421 {
2422 this_hdr->sh_type = SHT_GROUP;
2423 this_hdr->sh_entsize = 4;
2424 }
252b5132 2425 else if ((asect->flags & SEC_ALLOC) != 0
edd29cf9
AM		 2426 && (((asect->flags & (SEC_LOAD | SEC_HAS_CONTENTS)) == 0)
2427 || (asect->flags & SEC_NEVER_LOAD) != 0))
252b5132
RH		 2428 this_hdr->sh_type = SHT_NOBITS;
2429 else
6c99a5c3 2430 this_hdr->sh_type = SHT_PROGBITS;
252b5132
RH		 2431
2432 if ((asect->flags & SEC_ALLOC) != 0)
2433 this_hdr->sh_flags |= SHF_ALLOC;
2434 if ((asect->flags & SEC_READONLY) == 0)
2435 this_hdr->sh_flags |= SHF_WRITE;
2436 if ((asect->flags & SEC_CODE) != 0)
2437 this_hdr->sh_flags |= SHF_EXECINSTR;
f5fa8ca2
JJ		 2438 if ((asect->flags & SEC_MERGE) != 0)
2439 {
2440 this_hdr->sh_flags |= SHF_MERGE;
2441 this_hdr->sh_entsize = asect->entsize;
2442 if ((asect->flags & SEC_STRINGS) != 0)
2443 this_hdr->sh_flags |= SHF_STRINGS;
2444 }
1126897b 2445 if ((asect->flags & SEC_GROUP) == 0 && elf_group_name (asect) != NULL)
dbb410c3 2446 this_hdr->sh_flags |= SHF_GROUP;
13ae64f3 2447 if ((asect->flags & SEC_THREAD_LOCAL) != 0)
704afa60
JJ		 2448 {
2449 this_hdr->sh_flags |= SHF_TLS;
2450 if (asect->_raw_size == 0 && (asect->flags & SEC_HAS_CONTENTS) == 0)
2451 {
2452 struct bfd_link_order *o;
2453
2454 this_hdr->sh_size = 0;
2455 for (o = asect->link_order_head; o != NULL; o = o->next)
2456 if (this_hdr->sh_size < o->offset + o->size)
2457 this_hdr->sh_size = o->offset + o->size;
2458 if (this_hdr->sh_size)
2459 this_hdr->sh_type = SHT_NOBITS;
2460 }
2461 }
252b5132
RH		 2462
2463 /* Check for processor-specific section types. */
e1fddb6b
AO		 2464 if (bed->elf_backend_fake_sections
2465 && !(*bed->elf_backend_fake_sections) (abfd, this_hdr, asect))
2466 *failedptr = true;
252b5132
RH		 2467
2468 /* If the section has relocs, set up a section header for the
23bc299b
MM		 2469 SHT_REL[A] section. If two relocation sections are required for
2470 this section, it is up to the processor-specific back-end to
c044fabd 2471 create the other. */
23bc299b 2472 if ((asect->flags & SEC_RELOC) != 0
c044fabd 2473 && !_bfd_elf_init_reloc_shdr (abfd,
23bc299b 2474 &elf_section_data (asect)->rel_hdr,
c044fabd 2475 asect,
23bc299b
MM		 2476 elf_section_data (asect)->use_rela_p))
2477 *failedptr = true;
252b5132
RH		 2478}
2479
dbb410c3
AM		 2480/* Fill in the contents of a SHT_GROUP section. */
2481
1126897b
AM		 2482void
2483bfd_elf_set_group_contents (abfd, sec, failedptrarg)
dbb410c3
AM		 2484 bfd *abfd;
2485 asection *sec;
1126897b 2486 PTR failedptrarg;
dbb410c3
AM		 2487{
2488 boolean *failedptr = (boolean *) failedptrarg;
2489 unsigned long symindx;
9dce4196 2490 asection *elt, *first;
dbb410c3
AM		 2491 unsigned char *loc;
2492 struct bfd_link_order *l;
9dce4196 2493 boolean gas;
dbb410c3
AM		 2494
2495 if (elf_section_data (sec)->this_hdr.sh_type != SHT_GROUP
2496 || *failedptr)
2497 return;
2498
1126897b
AM		 2499 symindx = 0;
2500 if (elf_group_id (sec) != NULL)
2501 symindx = elf_group_id (sec)->udata.i;
2502
2503 if (symindx == 0)
2504 {
2505 /* If called from the assembler, swap_out_syms will have set up
2506 elf_section_syms; If called for "ld -r", use target_index. */
2507 if (elf_section_syms (abfd) != NULL)
2508 symindx = elf_section_syms (abfd)[sec->index]->udata.i;
2509 else
2510 symindx = sec->target_index;
2511 }
dbb410c3
AM		 2512 elf_section_data (sec)->this_hdr.sh_info = symindx;
2513
1126897b 2514 /* The contents won't be allocated for "ld -r" or objcopy. */
9dce4196 2515 gas = true;
dbb410c3
AM		 2516 if (sec->contents == NULL)
2517 {
9dce4196 2518 gas = false;
dbb410c3 2519 sec->contents = bfd_alloc (abfd, sec->_raw_size);
9dce4196
AM		 2520
2521 /* Arrange for the section to be written out. */
2522 elf_section_data (sec)->this_hdr.contents = sec->contents;
dbb410c3
AM		 2523 if (sec->contents == NULL)
2524 {
2525 *failedptr = true;
2526 return;
2527 }
2528 }
2529
2530 loc = sec->contents + sec->_raw_size;
2531
9dce4196
AM		 2532 /* Get the pointer to the first section in the group that gas
2533 squirreled away here. objcopy arranges for this to be set to the
2534 start of the input section group. */
2535 first = elt = elf_next_in_group (sec);
dbb410c3
AM		 2536
2537 /* First element is a flag word. Rest of section is elf section
2538 indices for all the sections of the group. Write them backwards
2539 just to keep the group in the same order as given in .section
2540 directives, not that it matters. */
2541 while (elt != NULL)
2542 {
9dce4196
AM		 2543 asection *s;
2544 unsigned int idx;
2545
dbb410c3 2546 loc -= 4;
9dce4196
AM		 2547 s = elt;
2548 if (!gas)
2549 s = s->output_section;
2550 idx = 0;
2551 if (s != NULL)
2552 idx = elf_section_data (s)->this_idx;
2553 H_PUT_32 (abfd, idx, loc);
945906ff 2554 elt = elf_next_in_group (elt);
9dce4196
AM		 2555 if (elt == first)
2556 break;
dbb410c3
AM		 2557 }
2558
2559 /* If this is a relocatable link, then the above did nothing because
2560 SEC is the output section. Look through the input sections
2561 instead. */
2562 for (l = sec->link_order_head; l != NULL; l = l->next)
2563 if (l->type == bfd_indirect_link_order
945906ff 2564 && (elt = elf_next_in_group (l->u.indirect.section)) != NULL)
dbb410c3
AM		 2565 do
2566 {
2567 loc -= 4;
2568 H_PUT_32 (abfd,
2569 elf_section_data (elt->output_section)->this_idx, loc);
945906ff 2570 elt = elf_next_in_group (elt);
dbb410c3
AM		 2571 /* During a relocatable link, the lists are circular. */
2572 }
945906ff 2573 while (elt != elf_next_in_group (l->u.indirect.section));
dbb410c3 2574
9dce4196
AM		 2575 /* With ld -r, merging SHT_GROUP sections results in wasted space
2576 due to allowing for the flag word on each input. We may well
2577 duplicate entries too. */
2578 while ((loc -= 4) > sec->contents)
2579 H_PUT_32 (abfd, 0, loc);
2580
2581 if (loc != sec->contents)
2582 abort ();
dbb410c3 2583
9dce4196 2584 H_PUT_32 (abfd, sec->flags & SEC_LINK_ONCE ? GRP_COMDAT : 0, loc);
dbb410c3
AM		 2585}
2586
252b5132
RH		 2587/* Assign all ELF section numbers. The dummy first section is handled here
2588 too. The link/info pointers for the standard section types are filled
2589 in here too, while we're at it. */
2590
2591static boolean
2592assign_section_numbers (abfd)
2593 bfd *abfd;
2594{
2595 struct elf_obj_tdata *t = elf_tdata (abfd);
2596 asection *sec;
2b0f7ef9 2597 unsigned int section_number, secn;
252b5132 2598 Elf_Internal_Shdr **i_shdrp;
dc810e39 2599 bfd_size_type amt;
252b5132
RH		 2600
2601 section_number = 1;
2602
2b0f7ef9
JJ		 2603 _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd));
2604
252b5132
RH		 2605 for (sec = abfd->sections; sec; sec = sec->next)
2606 {
2607 struct bfd_elf_section_data *d = elf_section_data (sec);
2608
9ad5cbcf
AM		 2609 if (section_number == SHN_LORESERVE)
2610 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
252b5132 2611 d->this_idx = section_number++;
2b0f7ef9 2612 _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->this_hdr.sh_name);
252b5132
RH		 2613 if ((sec->flags & SEC_RELOC) == 0)
2614 d->rel_idx = 0;
2615 else
2b0f7ef9 2616 {
9ad5cbcf
AM		 2617 if (section_number == SHN_LORESERVE)
2618 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
2b0f7ef9
JJ		 2619 d->rel_idx = section_number++;
2620 _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr.sh_name);
2621 }
23bc299b
MM		 2622
2623 if (d->rel_hdr2)
2b0f7ef9 2624 {
9ad5cbcf
AM		 2625 if (section_number == SHN_LORESERVE)
2626 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
2b0f7ef9
JJ		 2627 d->rel_idx2 = section_number++;
2628 _bfd_elf_strtab_addref (elf_shstrtab (abfd), d->rel_hdr2->sh_name);
2629 }
23bc299b
MM		 2630 else
2631 d->rel_idx2 = 0;
252b5132
RH		 2632 }
2633
9ad5cbcf
AM		 2634 if (section_number == SHN_LORESERVE)
2635 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
252b5132 2636 t->shstrtab_section = section_number++;
2b0f7ef9 2637 _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->shstrtab_hdr.sh_name);
252b5132 2638 elf_elfheader (abfd)->e_shstrndx = t->shstrtab_section;
252b5132
RH		 2639
2640 if (bfd_get_symcount (abfd) > 0)
2641 {
9ad5cbcf
AM		 2642 if (section_number == SHN_LORESERVE)
2643 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
252b5132 2644 t->symtab_section = section_number++;
2b0f7ef9 2645 _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->symtab_hdr.sh_name);
9ad5cbcf
AM		 2646 if (section_number > SHN_LORESERVE - 2)
2647 {
2648 if (section_number == SHN_LORESERVE)
2649 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
2650 t->symtab_shndx_section = section_number++;
2651 t->symtab_shndx_hdr.sh_name
2652 = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd),
2653 ".symtab_shndx", false);
2654 if (t->symtab_shndx_hdr.sh_name == (unsigned int) -1)
2655 return false;
2656 }
2657 if (section_number == SHN_LORESERVE)
2658 section_number += SHN_HIRESERVE + 1 - SHN_LORESERVE;
252b5132 2659 t->strtab_section = section_number++;
2b0f7ef9 2660 _bfd_elf_strtab_addref (elf_shstrtab (abfd), t->strtab_hdr.sh_name);
252b5132
RH		 2661 }
2662
2b0f7ef9
JJ		 2663 _bfd_elf_strtab_finalize (elf_shstrtab (abfd));
2664 t->shstrtab_hdr.sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd));
9ad5cbcf
AM		 2665
2666 elf_numsections (abfd) = section_number;
252b5132 2667 elf_elfheader (abfd)->e_shnum = section_number;
9ad5cbcf
AM		 2668 if (section_number > SHN_LORESERVE)
2669 elf_elfheader (abfd)->e_shnum -= SHN_HIRESERVE + 1 - SHN_LORESERVE;
252b5132
RH		 2670
2671 /* Set up the list of section header pointers, in agreement with the
2672 indices. */
dc810e39 2673 amt = section_number * sizeof (Elf_Internal_Shdr *);
c97e73dd 2674 i_shdrp = (Elf_Internal_Shdr **) bfd_zalloc (abfd, amt);
252b5132
RH		 2675 if (i_shdrp == NULL)
2676 return false;
2677
dc810e39 2678 amt = sizeof (Elf_Internal_Shdr);
c97e73dd 2679 i_shdrp[0] = (Elf_Internal_Shdr *) bfd_zalloc (abfd, amt);
252b5132
RH		 2680 if (i_shdrp[0] == NULL)
2681 {
2682 bfd_release (abfd, i_shdrp);
2683 return false;
2684 }
252b5132
RH		 2685
2686 elf_elfsections (abfd) = i_shdrp;
2687
2688 i_shdrp[t->shstrtab_section] = &t->shstrtab_hdr;
2689 if (bfd_get_symcount (abfd) > 0)
2690 {
2691 i_shdrp[t->symtab_section] = &t->symtab_hdr;
9ad5cbcf
AM		 2692 if (elf_numsections (abfd) > SHN_LORESERVE)
2693 {
2694 i_shdrp[t->symtab_shndx_section] = &t->symtab_shndx_hdr;
2695 t->symtab_shndx_hdr.sh_link = t->symtab_section;
2696 }
252b5132
RH		 2697 i_shdrp[t->strtab_section] = &t->strtab_hdr;
2698 t->symtab_hdr.sh_link = t->strtab_section;
2699 }
2700 for (sec = abfd->sections; sec; sec = sec->next)
2701 {
2702 struct bfd_elf_section_data *d = elf_section_data (sec);
2703 asection *s;
2704 const char *name;
2705
2706 i_shdrp[d->this_idx] = &d->this_hdr;
2707 if (d->rel_idx != 0)
2708 i_shdrp[d->rel_idx] = &d->rel_hdr;
23bc299b
MM		 2709 if (d->rel_idx2 != 0)
2710 i_shdrp[d->rel_idx2] = d->rel_hdr2;
252b5132
RH		 2711
2712 /* Fill in the sh_link and sh_info fields while we're at it. */
2713
2714 /* sh_link of a reloc section is the section index of the symbol
2715 table. sh_info is the section index of the section to which
2716 the relocation entries apply. */
2717 if (d->rel_idx != 0)
2718 {
2719 d->rel_hdr.sh_link = t->symtab_section;
2720 d->rel_hdr.sh_info = d->this_idx;
2721 }
23bc299b
MM		 2722 if (d->rel_idx2 != 0)
2723 {
2724 d->rel_hdr2->sh_link = t->symtab_section;
2725 d->rel_hdr2->sh_info = d->this_idx;
2726 }
252b5132
RH		 2727
2728 switch (d->this_hdr.sh_type)
2729 {
2730 case SHT_REL:
2731 case SHT_RELA:
2732 /* A reloc section which we are treating as a normal BFD
2733 section. sh_link is the section index of the symbol
2734 table. sh_info is the section index of the section to
2735 which the relocation entries apply. We assume that an
2736 allocated reloc section uses the dynamic symbol table.
2737 FIXME: How can we be sure? */
2738 s = bfd_get_section_by_name (abfd, ".dynsym");
2739 if (s != NULL)
2740 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
2741
2742 /* We look up the section the relocs apply to by name. */
2743 name = sec->name;
2744 if (d->this_hdr.sh_type == SHT_REL)
2745 name += 4;
2746 else
2747 name += 5;
2748 s = bfd_get_section_by_name (abfd, name);
2749 if (s != NULL)
2750 d->this_hdr.sh_info = elf_section_data (s)->this_idx;
2751 break;
2752
2753 case SHT_STRTAB:
2754 /* We assume that a section named .stab*str is a stabs
2755 string section. We look for a section with the same name
2756 but without the trailing ``str'', and set its sh_link
2757 field to point to this section. */
2758 if (strncmp (sec->name, ".stab", sizeof ".stab" - 1) == 0
2759 && strcmp (sec->name + strlen (sec->name) - 3, "str") == 0)
2760 {
2761 size_t len;
2762 char *alc;
2763
2764 len = strlen (sec->name);
d4c88bbb 2765 alc = (char *) bfd_malloc ((bfd_size_type) (len - 2));
252b5132
RH		 2766 if (alc == NULL)
2767 return false;
d4c88bbb 2768 memcpy (alc, sec->name, len - 3);
252b5132
RH		 2769 alc[len - 3] = '\0';
2770 s = bfd_get_section_by_name (abfd, alc);
2771 free (alc);
2772 if (s != NULL)
2773 {
2774 elf_section_data (s)->this_hdr.sh_link = d->this_idx;
2775
2776 /* This is a .stab section. */
0594c12d
AM		 2777 if (elf_section_data (s)->this_hdr.sh_entsize == 0)
2778 elf_section_data (s)->this_hdr.sh_entsize
2779 = 4 + 2 * bfd_get_arch_size (abfd) / 8;
252b5132
RH		 2780 }
2781 }
2782 break;
2783
2784 case SHT_DYNAMIC:
2785 case SHT_DYNSYM:
2786 case SHT_GNU_verneed:
2787 case SHT_GNU_verdef:
2788 /* sh_link is the section header index of the string table
2789 used for the dynamic entries, or the symbol table, or the
2790 version strings. */
2791 s = bfd_get_section_by_name (abfd, ".dynstr");
2792 if (s != NULL)
2793 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
2794 break;
2795
2796 case SHT_HASH:
2797 case SHT_GNU_versym:
2798 /* sh_link is the section header index of the symbol table
2799 this hash table or version table is for. */
2800 s = bfd_get_section_by_name (abfd, ".dynsym");
2801 if (s != NULL)
2802 d->this_hdr.sh_link = elf_section_data (s)->this_idx;
2803 break;
dbb410c3
AM		 2804
2805 case SHT_GROUP:
2806 d->this_hdr.sh_link = t->symtab_section;
252b5132
RH		 2807 }
2808 }
2809
2b0f7ef9 2810 for (secn = 1; secn < section_number; ++secn)
9ad5cbcf
AM		 2811 if (i_shdrp[secn] == NULL)
2812 i_shdrp[secn] = i_shdrp[0];
2813 else
2814 i_shdrp[secn]->sh_name = _bfd_elf_strtab_offset (elf_shstrtab (abfd),
2815 i_shdrp[secn]->sh_name);
252b5132
RH		 2816 return true;
2817}
2818
2819/* Map symbol from it's internal number to the external number, moving
2820 all local symbols to be at the head of the list. */
2821
2822static INLINE int
2823sym_is_global (abfd, sym)
2824 bfd *abfd;
2825 asymbol *sym;
2826{
2827 /* If the backend has a special mapping, use it. */
2828 if (get_elf_backend_data (abfd)->elf_backend_sym_is_global)
2829 return ((*get_elf_backend_data (abfd)->elf_backend_sym_is_global)
2830 (abfd, sym));
2831
2832 return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0
2833 || bfd_is_und_section (bfd_get_section (sym))
2834 || bfd_is_com_section (bfd_get_section (sym)));
2835}
2836
2837static boolean
2838elf_map_symbols (abfd)
2839 bfd *abfd;
2840{
dc810e39 2841 unsigned int symcount = bfd_get_symcount (abfd);
252b5132
RH		 2842 asymbol **syms = bfd_get_outsymbols (abfd);
2843 asymbol **sect_syms;
dc810e39
AM		 2844 unsigned int num_locals = 0;
2845 unsigned int num_globals = 0;
2846 unsigned int num_locals2 = 0;
2847 unsigned int num_globals2 = 0;
252b5132 2848 int max_index = 0;
dc810e39 2849 unsigned int idx;
252b5132
RH		 2850 asection *asect;
2851 asymbol **new_syms;
dc810e39 2852 bfd_size_type amt;
252b5132
RH		 2853
2854#ifdef DEBUG
2855 fprintf (stderr, "elf_map_symbols\n");
2856 fflush (stderr);
2857#endif
2858
252b5132
RH		 2859 for (asect = abfd->sections; asect; asect = asect->next)
2860 {
2861 if (max_index < asect->index)
2862 max_index = asect->index;
2863 }
2864
2865 max_index++;
dc810e39
AM		 2866 amt = max_index * sizeof (asymbol *);
2867 sect_syms = (asymbol **) bfd_zalloc (abfd, amt);
252b5132
RH		 2868 if (sect_syms == NULL)
2869 return false;
2870 elf_section_syms (abfd) = sect_syms;
4e89ac30 2871 elf_num_section_syms (abfd) = max_index;
252b5132 2872
079e9a2f
AM		 2873 /* Init sect_syms entries for any section symbols we have already
2874 decided to output. */
252b5132
RH		 2875 for (idx = 0; idx < symcount; idx++)
2876 {
dc810e39 2877 asymbol *sym = syms[idx];
c044fabd 2878
252b5132
RH		 2879 if ((sym->flags & BSF_SECTION_SYM) != 0
2880 && sym->value == 0)
2881 {
2882 asection *sec;
2883
2884 sec = sym->section;
2885
2886 if (sec->owner != NULL)
2887 {
2888 if (sec->owner != abfd)
2889 {
2890 if (sec->output_offset != 0)
2891 continue;
c044fabd 2892
252b5132
RH		 2893 sec = sec->output_section;
2894
079e9a2f
AM		 2895 /* Empty sections in the input files may have had a
2896 section symbol created for them. (See the comment
2897 near the end of _bfd_generic_link_output_symbols in
2898 linker.c). If the linker script discards such
2899 sections then we will reach this point. Since we know
2900 that we cannot avoid this case, we detect it and skip
2901 the abort and the assignment to the sect_syms array.
2902 To reproduce this particular case try running the
2903 linker testsuite test ld-scripts/weak.exp for an ELF
2904 port that uses the generic linker. */
252b5132
RH		 2905 if (sec->owner == NULL)
2906 continue;
2907
2908 BFD_ASSERT (sec->owner == abfd);
2909 }
2910 sect_syms[sec->index] = syms[idx];
2911 }
2912 }
2913 }
2914
252b5132
RH		 2915 /* Classify all of the symbols. */
2916 for (idx = 0; idx < symcount; idx++)
2917 {
2918 if (!sym_is_global (abfd, syms[idx]))
2919 num_locals++;
2920 else
2921 num_globals++;
2922 }
079e9a2f
AM		 2923
2924 /* We will be adding a section symbol for each BFD section. Most normal
2925 sections will already have a section symbol in outsymbols, but
2926 eg. SHT_GROUP sections will not, and we need the section symbol mapped
2927 at least in that case. */
252b5132
RH		 2928 for (asect = abfd->sections; asect; asect = asect->next)
2929 {
079e9a2f 2930 if (sect_syms[asect->index] == NULL)
252b5132 2931 {
079e9a2f 2932 if (!sym_is_global (abfd, asect->symbol))
252b5132
RH		 2933 num_locals++;
2934 else
2935 num_globals++;
252b5132
RH		 2936 }
2937 }
2938
2939 /* Now sort the symbols so the local symbols are first. */
dc810e39
AM		 2940 amt = (num_locals + num_globals) * sizeof (asymbol *);
2941 new_syms = (asymbol **) bfd_alloc (abfd, amt);
2942
252b5132
RH		 2943 if (new_syms == NULL)
2944 return false;
2945
2946 for (idx = 0; idx < symcount; idx++)
2947 {
2948 asymbol *sym = syms[idx];
dc810e39 2949 unsigned int i;
252b5132
RH		 2950
2951 if (!sym_is_global (abfd, sym))
2952 i = num_locals2++;
2953 else
2954 i = num_locals + num_globals2++;
2955 new_syms[i] = sym;
2956 sym->udata.i = i + 1;
2957 }
2958 for (asect = abfd->sections; asect; asect = asect->next)
2959 {
079e9a2f 2960 if (sect_syms[asect->index] == NULL)
252b5132 2961 {
079e9a2f 2962 asymbol *sym = asect->symbol;
dc810e39 2963 unsigned int i;
252b5132 2964
079e9a2f 2965 sect_syms[asect->index] = sym;
252b5132
RH		 2966 if (!sym_is_global (abfd, sym))
2967 i = num_locals2++;
2968 else
2969 i = num_locals + num_globals2++;
2970 new_syms[i] = sym;
2971 sym->udata.i = i + 1;
2972 }
2973 }
2974
2975 bfd_set_symtab (abfd, new_syms, num_locals + num_globals);
2976
2977 elf_num_locals (abfd) = num_locals;
2978 elf_num_globals (abfd) = num_globals;
2979 return true;
2980}
2981
2982/* Align to the maximum file alignment that could be required for any
2983 ELF data structure. */
2984
2985static INLINE file_ptr align_file_position PARAMS ((file_ptr, int));
2986static INLINE file_ptr
2987align_file_position (off, align)
2988 file_ptr off;
2989 int align;
2990{
2991 return (off + align - 1) & ~(align - 1);
2992}
2993
2994/* Assign a file position to a section, optionally aligning to the
2995 required section alignment. */
2996
2997INLINE file_ptr
2998_bfd_elf_assign_file_position_for_section (i_shdrp, offset, align)
2999 Elf_Internal_Shdr *i_shdrp;
3000 file_ptr offset;
3001 boolean align;
3002{
3003 if (align)
3004 {
3005 unsigned int al;
3006
3007 al = i_shdrp->sh_addralign;
3008 if (al > 1)
3009 offset = BFD_ALIGN (offset, al);
3010 }
3011 i_shdrp->sh_offset = offset;
3012 if (i_shdrp->bfd_section != NULL)
3013 i_shdrp->bfd_section->filepos = offset;
3014 if (i_shdrp->sh_type != SHT_NOBITS)
3015 offset += i_shdrp->sh_size;
3016 return offset;
3017}
3018
3019/* Compute the file positions we are going to put the sections at, and
3020 otherwise prepare to begin writing out the ELF file. If LINK_INFO
3021 is not NULL, this is being called by the ELF backend linker. */
3022
3023boolean
3024_bfd_elf_compute_section_file_positions (abfd, link_info)
3025 bfd *abfd;
3026 struct bfd_link_info *link_info;
3027{
3028 struct elf_backend_data *bed = get_elf_backend_data (abfd);
3029 boolean failed;
3030 struct bfd_strtab_hash *strtab;
3031 Elf_Internal_Shdr *shstrtab_hdr;
3032
3033 if (abfd->output_has_begun)
3034 return true;
3035
3036 /* Do any elf backend specific processing first. */
3037 if (bed->elf_backend_begin_write_processing)
3038 (*bed->elf_backend_begin_write_processing) (abfd, link_info);
3039
3040 if (! prep_headers (abfd))
3041 return false;
3042
e6c51ed4
NC		 3043 /* Post process the headers if necessary. */
3044 if (bed->elf_backend_post_process_headers)
3045 (*bed->elf_backend_post_process_headers) (abfd, link_info);
3046
252b5132
RH		 3047 failed = false;
3048 bfd_map_over_sections (abfd, elf_fake_sections, &failed);
3049 if (failed)
3050 return false;
3051
3052 if (!assign_section_numbers (abfd))
3053 return false;
3054
3055 /* The backend linker builds symbol table information itself. */
3056 if (link_info == NULL && bfd_get_symcount (abfd) > 0)
3057 {
3058 /* Non-zero if doing a relocatable link. */
3059 int relocatable_p = ! (abfd->flags & (EXEC_P | DYNAMIC));
3060
3061 if (! swap_out_syms (abfd, &strtab, relocatable_p))
3062 return false;
3063 }
3064
1126897b 3065 if (link_info == NULL)
dbb410c3 3066 {
1126897b 3067 bfd_map_over_sections (abfd, bfd_elf_set_group_contents, &failed);
dbb410c3
AM		 3068 if (failed)
3069 return false;
3070 }
3071
252b5132
RH		 3072 shstrtab_hdr = &elf_tdata (abfd)->shstrtab_hdr;
3073 /* sh_name was set in prep_headers. */
3074 shstrtab_hdr->sh_type = SHT_STRTAB;
3075 shstrtab_hdr->sh_flags = 0;
3076 shstrtab_hdr->sh_addr = 0;
2b0f7ef9 3077 shstrtab_hdr->sh_size = _bfd_elf_strtab_size (elf_shstrtab (abfd));
252b5132
RH		 3078 shstrtab_hdr->sh_entsize = 0;
3079 shstrtab_hdr->sh_link = 0;
3080 shstrtab_hdr->sh_info = 0;
3081 /* sh_offset is set in assign_file_positions_except_relocs. */
3082 shstrtab_hdr->sh_addralign = 1;
3083
3084 if (!assign_file_positions_except_relocs (abfd))
3085 return false;
3086
3087 if (link_info == NULL && bfd_get_symcount (abfd) > 0)
3088 {
3089 file_ptr off;
3090 Elf_Internal_Shdr *hdr;
3091
3092 off = elf_tdata (abfd)->next_file_pos;
3093
3094 hdr = &elf_tdata (abfd)->symtab_hdr;
3095 off = _bfd_elf_assign_file_position_for_section (hdr, off, true);
3096
9ad5cbcf
AM		 3097 hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
3098 if (hdr->sh_size != 0)
3099 off = _bfd_elf_assign_file_position_for_section (hdr, off, true);
3100
252b5132
RH		 3101 hdr = &elf_tdata (abfd)->strtab_hdr;
3102 off = _bfd_elf_assign_file_position_for_section (hdr, off, true);
3103
3104 elf_tdata (abfd)->next_file_pos = off;
3105
3106 /* Now that we know where the .strtab section goes, write it
3107 out. */
3108 if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
3109 || ! _bfd_stringtab_emit (abfd, strtab))
3110 return false;
3111 _bfd_stringtab_free (strtab);
3112 }
3113
3114 abfd->output_has_begun = true;
3115
3116 return true;
3117}
3118
3119/* Create a mapping from a set of sections to a program segment. */
3120
3121static INLINE struct elf_segment_map *
3122make_mapping (abfd, sections, from, to, phdr)
3123 bfd *abfd;
3124 asection **sections;
3125 unsigned int from;
3126 unsigned int to;
3127 boolean phdr;
3128{
3129 struct elf_segment_map *m;
3130 unsigned int i;
3131 asection **hdrpp;
dc810e39 3132 bfd_size_type amt;
252b5132 3133
dc810e39
AM		 3134 amt = sizeof (struct elf_segment_map);
3135 amt += (to - from - 1) * sizeof (asection *);
3136 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
252b5132
RH		 3137 if (m == NULL)
3138 return NULL;
3139 m->next = NULL;
3140 m->p_type = PT_LOAD;
3141 for (i = from, hdrpp = sections + from; i < to; i++, hdrpp++)
3142 m->sections[i - from] = *hdrpp;
3143 m->count = to - from;
3144
3145 if (from == 0 && phdr)
3146 {
3147 /* Include the headers in the first PT_LOAD segment. */
3148 m->includes_filehdr = 1;
3149 m->includes_phdrs = 1;
3150 }
3151
3152 return m;
3153}
3154
3155/* Set up a mapping from BFD sections to program segments. */
3156
3157static boolean
3158map_sections_to_segments (abfd)
3159 bfd *abfd;
3160{
3161 asection **sections = NULL;
3162 asection *s;
3163 unsigned int i;
3164 unsigned int count;
3165 struct elf_segment_map *mfirst;
3166 struct elf_segment_map **pm;
3167 struct elf_segment_map *m;
3168 asection *last_hdr;
3169 unsigned int phdr_index;
3170 bfd_vma maxpagesize;
3171 asection **hdrpp;
3172 boolean phdr_in_segment = true;
3173 boolean writable;
13ae64f3
JJ		 3174 int tls_count = 0;
3175 asection *first_tls = NULL;
65765700 3176 asection *dynsec, *eh_frame_hdr;
dc810e39 3177 bfd_size_type amt;
252b5132
RH		 3178
3179 if (elf_tdata (abfd)->segment_map != NULL)
3180 return true;
3181
3182 if (bfd_count_sections (abfd) == 0)
3183 return true;
3184
3185 /* Select the allocated sections, and sort them. */
3186
dc810e39
AM		 3187 amt = bfd_count_sections (abfd) * sizeof (asection *);
3188 sections = (asection **) bfd_malloc (amt);
252b5132
RH		 3189 if (sections == NULL)
3190 goto error_return;
3191
3192 i = 0;
3193 for (s = abfd->sections; s != NULL; s = s->next)
3194 {
3195 if ((s->flags & SEC_ALLOC) != 0)
3196 {
3197 sections[i] = s;
3198 ++i;
3199 }
3200 }
3201 BFD_ASSERT (i <= bfd_count_sections (abfd));
3202 count = i;
3203
3204 qsort (sections, (size_t) count, sizeof (asection *), elf_sort_sections);
3205
3206 /* Build the mapping. */
3207
3208 mfirst = NULL;
3209 pm = &mfirst;
3210
3211 /* If we have a .interp section, then create a PT_PHDR segment for
3212 the program headers and a PT_INTERP segment for the .interp
3213 section. */
3214 s = bfd_get_section_by_name (abfd, ".interp");
3215 if (s != NULL && (s->flags & SEC_LOAD) != 0)
3216 {
dc810e39
AM		 3217 amt = sizeof (struct elf_segment_map);
3218 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
252b5132
RH		 3219 if (m == NULL)
3220 goto error_return;
3221 m->next = NULL;
3222 m->p_type = PT_PHDR;
3223 /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */
3224 m->p_flags = PF_R | PF_X;
3225 m->p_flags_valid = 1;
3226 m->includes_phdrs = 1;
3227
3228 *pm = m;
3229 pm = &m->next;
3230
dc810e39
AM		 3231 amt = sizeof (struct elf_segment_map);
3232 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
252b5132
RH		 3233 if (m == NULL)
3234 goto error_return;
3235 m->next = NULL;
3236 m->p_type = PT_INTERP;
3237 m->count = 1;
3238 m->sections[0] = s;
3239
3240 *pm = m;
3241 pm = &m->next;
3242 }
3243
3244 /* Look through the sections. We put sections in the same program
3245 segment when the start of the second section can be placed within
3246 a few bytes of the end of the first section. */
3247 last_hdr = NULL;
3248 phdr_index = 0;
3249 maxpagesize = get_elf_backend_data (abfd)->maxpagesize;
3250 writable = false;
3251 dynsec = bfd_get_section_by_name (abfd, ".dynamic");
3252 if (dynsec != NULL
3253 && (dynsec->flags & SEC_LOAD) == 0)
3254 dynsec = NULL;
3255
3256 /* Deal with -Ttext or something similar such that the first section
3257 is not adjacent to the program headers. This is an
3258 approximation, since at this point we don't know exactly how many
3259 program headers we will need. */
3260 if (count > 0)
3261 {
3262 bfd_size_type phdr_size;
3263
3264 phdr_size = elf_tdata (abfd)->program_header_size;
3265 if (phdr_size == 0)
3266 phdr_size = get_elf_backend_data (abfd)->s->sizeof_phdr;
3267 if ((abfd->flags & D_PAGED) == 0
3268 || sections[0]->lma < phdr_size
3269 || sections[0]->lma % maxpagesize < phdr_size % maxpagesize)
3270 phdr_in_segment = false;
3271 }
3272
3273 for (i = 0, hdrpp = sections; i < count; i++, hdrpp++)
3274 {
3275 asection *hdr;
3276 boolean new_segment;
3277
3278 hdr = *hdrpp;
3279
3280 /* See if this section and the last one will fit in the same
3281 segment. */
3282
3283 if (last_hdr == NULL)
3284 {
3285 /* If we don't have a segment yet, then we don't need a new
3286 one (we build the last one after this loop). */
3287 new_segment = false;
3288 }
3289 else if (last_hdr->lma - last_hdr->vma != hdr->lma - hdr->vma)
3290 {
3291 /* If this section has a different relation between the
3292 virtual address and the load address, then we need a new
3293 segment. */
3294 new_segment = true;
3295 }
3296 else if (BFD_ALIGN (last_hdr->lma + last_hdr->_raw_size, maxpagesize)
3297 < BFD_ALIGN (hdr->lma, maxpagesize))
3298 {
3299 /* If putting this section in this segment would force us to
3300 skip a page in the segment, then we need a new segment. */
3301 new_segment = true;
3302 }
3303 else if ((last_hdr->flags & SEC_LOAD) == 0
3304 && (hdr->flags & SEC_LOAD) != 0)
3305 {
3306 /* We don't want to put a loadable section after a
3307 nonloadable section in the same segment. */
3308 new_segment = true;
3309 }
3310 else if ((abfd->flags & D_PAGED) == 0)
3311 {
3312 /* If the file is not demand paged, which means that we
3313 don't require the sections to be correctly aligned in the
3314 file, then there is no other reason for a new segment. */
3315 new_segment = false;
3316 }
3317 else if (! writable
3318 && (hdr->flags & SEC_READONLY) == 0
b89fe0ee
AM		 3319 && (((last_hdr->lma + last_hdr->_raw_size - 1)
3320 & ~(maxpagesize - 1))
3321 != (hdr->lma & ~(maxpagesize - 1))))
252b5132
RH		 3322 {
3323 /* We don't want to put a writable section in a read only
3324 segment, unless they are on the same page in memory
3325 anyhow. We already know that the last section does not
3326 bring us past the current section on the page, so the
3327 only case in which the new section is not on the same
3328 page as the previous section is when the previous section
3329 ends precisely on a page boundary. */
3330 new_segment = true;
3331 }
3332 else
3333 {
3334 /* Otherwise, we can use the same segment. */
3335 new_segment = false;
3336 }
3337
3338 if (! new_segment)
3339 {
3340 if ((hdr->flags & SEC_READONLY) == 0)
3341 writable = true;
3342 last_hdr = hdr;
3343 continue;
3344 }
3345
3346 /* We need a new program segment. We must create a new program
3347 header holding all the sections from phdr_index until hdr. */
3348
3349 m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment);
3350 if (m == NULL)
3351 goto error_return;
3352
3353 *pm = m;
3354 pm = &m->next;
3355
3356 if ((hdr->flags & SEC_READONLY) == 0)
3357 writable = true;
3358 else
3359 writable = false;
3360
3361 last_hdr = hdr;
3362 phdr_index = i;
3363 phdr_in_segment = false;
3364 }
3365
3366 /* Create a final PT_LOAD program segment. */
3367 if (last_hdr != NULL)
3368 {
3369 m = make_mapping (abfd, sections, phdr_index, i, phdr_in_segment);
3370 if (m == NULL)
3371 goto error_return;
3372
3373 *pm = m;
3374 pm = &m->next;
3375 }
3376
3377 /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */
3378 if (dynsec != NULL)
3379 {
dc810e39
AM		 3380 amt = sizeof (struct elf_segment_map);
3381 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
252b5132
RH		 3382 if (m == NULL)
3383 goto error_return;
3384 m->next = NULL;
3385 m->p_type = PT_DYNAMIC;
3386 m->count = 1;
3387 m->sections[0] = dynsec;
3388
3389 *pm = m;
3390 pm = &m->next;
3391 }
3392
3393 /* For each loadable .note section, add a PT_NOTE segment. We don't
3394 use bfd_get_section_by_name, because if we link together
3395 nonloadable .note sections and loadable .note sections, we will
3396 generate two .note sections in the output file. FIXME: Using
3397 names for section types is bogus anyhow. */
3398 for (s = abfd->sections; s != NULL; s = s->next)
3399 {
3400 if ((s->flags & SEC_LOAD) != 0
3401 && strncmp (s->name, ".note", 5) == 0)
3402 {
dc810e39
AM		 3403 amt = sizeof (struct elf_segment_map);
3404 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
252b5132
RH		 3405 if (m == NULL)
3406 goto error_return;
3407 m->next = NULL;
3408 m->p_type = PT_NOTE;
3409 m->count = 1;
3410 m->sections[0] = s;
3411
3412 *pm = m;
3413 pm = &m->next;
3414 }
13ae64f3
JJ		 3415 if (s->flags & SEC_THREAD_LOCAL)
3416 {
3417 if (! tls_count)
3418 first_tls = s;
3419 tls_count++;
3420 }
3421 }
3422
3423 /* If there are any SHF_TLS output sections, add PT_TLS segment. */
3424 if (tls_count > 0)
3425 {
3426 int i;
3427
3428 amt = sizeof (struct elf_segment_map);
3429 amt += (tls_count - 1) * sizeof (asection *);
3430 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
3431 if (m == NULL)
3432 goto error_return;
3433 m->next = NULL;
3434 m->p_type = PT_TLS;
3435 m->count = tls_count;
3436 /* Mandated PF_R. */
3437 m->p_flags = PF_R;
3438 m->p_flags_valid = 1;
3439 for (i = 0; i < tls_count; ++i)
3440 {
3441 BFD_ASSERT (first_tls->flags & SEC_THREAD_LOCAL);
3442 m->sections[i] = first_tls;
3443 first_tls = first_tls->next;
3444 }
3445
3446 *pm = m;
3447 pm = &m->next;
252b5132
RH		 3448 }
3449
65765700
JJ		 3450 /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME
3451 segment. */
126495ed
AM		 3452 eh_frame_hdr = elf_tdata (abfd)->eh_frame_hdr;
3453 if (eh_frame_hdr != NULL
3454 && (eh_frame_hdr->output_section->flags & SEC_LOAD) != 0)
65765700
JJ		 3455 {
3456 amt = sizeof (struct elf_segment_map);
3457 m = (struct elf_segment_map *) bfd_zalloc (abfd, amt);
3458 if (m == NULL)
3459 goto error_return;
3460 m->next = NULL;
3461 m->p_type = PT_GNU_EH_FRAME;
3462 m->count = 1;
126495ed 3463 m->sections[0] = eh_frame_hdr->output_section;
65765700
JJ		 3464
3465 *pm = m;
3466 pm = &m->next;
3467 }
3468
252b5132
RH		 3469 free (sections);
3470 sections = NULL;
3471
3472 elf_tdata (abfd)->segment_map = mfirst;
3473 return true;
3474
3475 error_return:
3476 if (sections != NULL)
3477 free (sections);
3478 return false;
3479}
3480
3481/* Sort sections by address. */
3482
3483static int
3484elf_sort_sections (arg1, arg2)
3485 const PTR arg1;
3486 const PTR arg2;
3487{
3488 const asection *sec1 = *(const asection **) arg1;
3489 const asection *sec2 = *(const asection **) arg2;
3490
3491 /* Sort by LMA first, since this is the address used to
3492 place the section into a segment. */
3493 if (sec1->lma < sec2->lma)
3494 return -1;
3495 else if (sec1->lma > sec2->lma)
3496 return 1;
3497
3498 /* Then sort by VMA. Normally the LMA and the VMA will be
3499 the same, and this will do nothing. */
3500 if (sec1->vma < sec2->vma)
3501 return -1;
3502 else if (sec1->vma > sec2->vma)
3503 return 1;
3504
3505 /* Put !SEC_LOAD sections after SEC_LOAD ones. */
3506
3507#define TOEND(x) (((x)->flags & SEC_LOAD) == 0)
3508
3509 if (TOEND (sec1))
3510 {
3511 if (TOEND (sec2))
00a7cdc5
NC		 3512 {
3513 /* If the indicies are the same, do not return 0
3514 here, but continue to try the next comparison. */
3515 if (sec1->target_index - sec2->target_index != 0)
3516 return sec1->target_index - sec2->target_index;
3517 }
252b5132
RH		 3518 else
3519 return 1;
3520 }
00a7cdc5 3521 else if (TOEND (sec2))
252b5132
RH		 3522 return -1;
3523
3524#undef TOEND
3525
00a7cdc5
NC		 3526 /* Sort by size, to put zero sized sections
3527 before others at the same address. */
252b5132
RH		 3528
3529 if (sec1->_raw_size < sec2->_raw_size)
3530 return -1;
3531 if (sec1->_raw_size > sec2->_raw_size)
3532 return 1;
3533
3534 return sec1->target_index - sec2->target_index;
3535}
3536
3537/* Assign file positions to the sections based on the mapping from
3538 sections to segments. This function also sets up some fields in
3539 the file header, and writes out the program headers. */
3540
3541static boolean
3542assign_file_positions_for_segments (abfd)
3543 bfd *abfd;
3544{
3545 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
3546 unsigned int count;
3547 struct elf_segment_map *m;
3548 unsigned int alloc;
3549 Elf_Internal_Phdr *phdrs;
3550 file_ptr off, voff;
3551 bfd_vma filehdr_vaddr, filehdr_paddr;
3552 bfd_vma phdrs_vaddr, phdrs_paddr;
3553 Elf_Internal_Phdr *p;
dc810e39 3554 bfd_size_type amt;
252b5132
RH		 3555
3556 if (elf_tdata (abfd)->segment_map == NULL)
3557 {
3558 if (! map_sections_to_segments (abfd))
3559 return false;
3560 }
1ed89aa9
NC		 3561 else
3562 {
3563 /* The placement algorithm assumes that non allocated sections are
3564 not in PT_LOAD segments. We ensure this here by removing such
3565 sections from the segment map. */
3566 for (m = elf_tdata (abfd)->segment_map;
3567 m != NULL;
3568 m = m->next)
3569 {
3570 unsigned int new_count;
3571 unsigned int i;
3572
3573 if (m->p_type != PT_LOAD)
3574 continue;
3575
3576 new_count = 0;
3577 for (i = 0; i < m->count; i ++)
3578 {
3579 if ((m->sections[i]->flags & SEC_ALLOC) != 0)
3580 {
47d9a591 3581 if (i != new_count)
1ed89aa9
NC		 3582 m->sections[new_count] = m->sections[i];
3583
3584 new_count ++;
3585 }
3586 }
3587
3588 if (new_count != m->count)
3589 m->count = new_count;
3590 }
3591 }
252b5132
RH		 3592
3593 if (bed->elf_backend_modify_segment_map)
3594 {
3595 if (! (*bed->elf_backend_modify_segment_map) (abfd))
3596 return false;
3597 }
3598
3599 count = 0;
3600 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
3601 ++count;
3602
3603 elf_elfheader (abfd)->e_phoff = bed->s->sizeof_ehdr;
3604 elf_elfheader (abfd)->e_phentsize = bed->s->sizeof_phdr;
3605 elf_elfheader (abfd)->e_phnum = count;
3606
3607 if (count == 0)
3608 return true;
3609
3610 /* If we already counted the number of program segments, make sure
3611 that we allocated enough space. This happens when SIZEOF_HEADERS
3612 is used in a linker script. */
3613 alloc = elf_tdata (abfd)->program_header_size / bed->s->sizeof_phdr;
3614 if (alloc != 0 && count > alloc)
3615 {
3616 ((*_bfd_error_handler)
3617 (_("%s: Not enough room for program headers (allocated %u, need %u)"),
3618 bfd_get_filename (abfd), alloc, count));
3619 bfd_set_error (bfd_error_bad_value);
3620 return false;
3621 }
3622
3623 if (alloc == 0)
3624 alloc = count;
3625
dc810e39
AM		 3626 amt = alloc * sizeof (Elf_Internal_Phdr);
3627 phdrs = (Elf_Internal_Phdr *) bfd_alloc (abfd, amt);
252b5132
RH		 3628 if (phdrs == NULL)
3629 return false;
3630
3631 off = bed->s->sizeof_ehdr;
3632 off += alloc * bed->s->sizeof_phdr;
3633
3634 filehdr_vaddr = 0;
3635 filehdr_paddr = 0;
3636 phdrs_vaddr = 0;
3637 phdrs_paddr = 0;
3638
3639 for (m = elf_tdata (abfd)->segment_map, p = phdrs;
3640 m != NULL;
3641 m = m->next, p++)
3642 {
3643 unsigned int i;
3644 asection **secpp;
3645
3646 /* If elf_segment_map is not from map_sections_to_segments, the
47d9a591 3647 sections may not be correctly ordered. NOTE: sorting should
52e9b619
MS		 3648 not be done to the PT_NOTE section of a corefile, which may
3649 contain several pseudo-sections artificially created by bfd.
3650 Sorting these pseudo-sections breaks things badly. */
47d9a591
AM		 3651 if (m->count > 1
3652 && !(elf_elfheader (abfd)->e_type == ET_CORE
52e9b619 3653 && m->p_type == PT_NOTE))
252b5132
RH		 3654 qsort (m->sections, (size_t) m->count, sizeof (asection *),
3655 elf_sort_sections);
3656
3657 p->p_type = m->p_type;
28a7f3e7 3658 p->p_flags = m->p_flags;
252b5132
RH		 3659
3660 if (p->p_type == PT_LOAD
3661 && m->count > 0
3662 && (m->sections[0]->flags & SEC_ALLOC) != 0)
3663 {
3664 if ((abfd->flags & D_PAGED) != 0)
3665 off += (m->sections[0]->vma - off) % bed->maxpagesize;
3666 else
3667 {
3668 bfd_size_type align;
3669
3670 align = 0;
3671 for (i = 0, secpp = m->sections; i < m->count; i++, secpp++)
3672 {
3673 bfd_size_type secalign;
3674
3675 secalign = bfd_get_section_alignment (abfd, *secpp);
3676 if (secalign > align)
3677 align = secalign;
3678 }
3679
3680 off += (m->sections[0]->vma - off) % (1 << align);
3681 }
3682 }
3683
3684 if (m->count == 0)
3685 p->p_vaddr = 0;
3686 else
3687 p->p_vaddr = m->sections[0]->vma;
3688
3689 if (m->p_paddr_valid)
3690 p->p_paddr = m->p_paddr;
3691 else if (m->count == 0)
3692 p->p_paddr = 0;
3693 else
3694 p->p_paddr = m->sections[0]->lma;
3695
3696 if (p->p_type == PT_LOAD
3697 && (abfd->flags & D_PAGED) != 0)
3698 p->p_align = bed->maxpagesize;
3699 else if (m->count == 0)
3700 p->p_align = bed->s->file_align;
3701 else
3702 p->p_align = 0;
3703
3704 p->p_offset = 0;
3705 p->p_filesz = 0;
3706 p->p_memsz = 0;
3707
3708 if (m->includes_filehdr)
3709 {
3710 if (! m->p_flags_valid)
3711 p->p_flags |= PF_R;
3712 p->p_offset = 0;
3713 p->p_filesz = bed->s->sizeof_ehdr;
3714 p->p_memsz = bed->s->sizeof_ehdr;
3715 if (m->count > 0)
3716 {
3717 BFD_ASSERT (p->p_type == PT_LOAD);
3718
3719 if (p->p_vaddr < (bfd_vma) off)
3720 {
caf47ea6
AM		 3721 (*_bfd_error_handler)
3722 (_("%s: Not enough room for program headers, try linking with -N"),
3723 bfd_get_filename (abfd));
252b5132
RH		 3724 bfd_set_error (bfd_error_bad_value);
3725 return false;
3726 }
3727
3728 p->p_vaddr -= off;
3729 if (! m->p_paddr_valid)
3730 p->p_paddr -= off;
3731 }
3732 if (p->p_type == PT_LOAD)
3733 {
3734 filehdr_vaddr = p->p_vaddr;
3735 filehdr_paddr = p->p_paddr;
3736 }
3737 }
3738
3739 if (m->includes_phdrs)
3740 {
3741 if (! m->p_flags_valid)
3742 p->p_flags |= PF_R;
3743
3744 if (m->includes_filehdr)
3745 {
3746 if (p->p_type == PT_LOAD)
3747 {
3748 phdrs_vaddr = p->p_vaddr + bed->s->sizeof_ehdr;
3749 phdrs_paddr = p->p_paddr + bed->s->sizeof_ehdr;
3750 }
3751 }
3752 else
3753 {
3754 p->p_offset = bed->s->sizeof_ehdr;
3755
3756 if (m->count > 0)
3757 {
3758 BFD_ASSERT (p->p_type == PT_LOAD);
3759 p->p_vaddr -= off - p->p_offset;
3760 if (! m->p_paddr_valid)
3761 p->p_paddr -= off - p->p_offset;
3762 }
3763
3764 if (p->p_type == PT_LOAD)
3765 {
3766 phdrs_vaddr = p->p_vaddr;
3767 phdrs_paddr = p->p_paddr;
3768 }
3769 else
3770 phdrs_vaddr = bed->maxpagesize + bed->s->sizeof_ehdr;
3771 }
3772
3773 p->p_filesz += alloc * bed->s->sizeof_phdr;
3774 p->p_memsz += alloc * bed->s->sizeof_phdr;
3775 }
3776
3777 if (p->p_type == PT_LOAD
3778 || (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core))
3779 {
3780 if (! m->includes_filehdr && ! m->includes_phdrs)
3781 p->p_offset = off;
3782 else
3783 {
3784 file_ptr adjust;
3785
3786 adjust = off - (p->p_offset + p->p_filesz);
3787 p->p_filesz += adjust;
3788 p->p_memsz += adjust;
3789 }
3790 }
3791
3792 voff = off;
3793
3794 for (i = 0, secpp = m->sections; i < m->count; i++, secpp++)
3795 {
3796 asection *sec;
3797 flagword flags;
3798 bfd_size_type align;
3799
3800 sec = *secpp;
3801 flags = sec->flags;
3802 align = 1 << bfd_get_section_alignment (abfd, sec);
3803
3804 /* The section may have artificial alignment forced by a
3805 link script. Notice this case by the gap between the
f5ffc919
NC		 3806 cumulative phdr lma and the section's lma. */
3807 if (p->p_paddr + p->p_memsz < sec->lma)
252b5132 3808 {
f5ffc919 3809 bfd_vma adjust = sec->lma - (p->p_paddr + p->p_memsz);
252b5132
RH		 3810
3811 p->p_memsz += adjust;
3812 off += adjust;
3813 voff += adjust;
3814 if ((flags & SEC_LOAD) != 0)
3815 p->p_filesz += adjust;
3816 }
3817
3818 if (p->p_type == PT_LOAD)
3819 {
3820 bfd_signed_vma adjust;
3821
3822 if ((flags & SEC_LOAD) != 0)
3823 {
3824 adjust = sec->lma - (p->p_paddr + p->p_memsz);
3825 if (adjust < 0)
3826 adjust = 0;
3827 }
3828 else if ((flags & SEC_ALLOC) != 0)
3829 {
3830 /* The section VMA must equal the file position
3831 modulo the page size. FIXME: I'm not sure if
3832 this adjustment is really necessary. We used to
3833 not have the SEC_LOAD case just above, and then
3834 this was necessary, but now I'm not sure. */
3835 if ((abfd->flags & D_PAGED) != 0)
3836 adjust = (sec->vma - voff) % bed->maxpagesize;
3837 else
3838 adjust = (sec->vma - voff) % align;
3839 }
3840 else
3841 adjust = 0;
3842
3843 if (adjust != 0)
3844 {
3845 if (i == 0)
3846 {
cdc7c09f
NC		 3847 (* _bfd_error_handler) (_("\
3848Error: First section in segment (%s) starts at 0x%x whereas the segment starts at 0x%x"),
3849 bfd_section_name (abfd, sec),
3850 sec->lma,
3851 p->p_paddr);
252b5132
RH		 3852 return false;
3853 }
3854 p->p_memsz += adjust;
3855 off += adjust;
3856 voff += adjust;
3857 if ((flags & SEC_LOAD) != 0)
3858 p->p_filesz += adjust;
3859 }
3860
3861 sec->filepos = off;
3862
3863 /* We check SEC_HAS_CONTENTS here because if NOLOAD is
3864 used in a linker script we may have a section with
3865 SEC_LOAD clear but which is supposed to have
3866 contents. */
3867 if ((flags & SEC_LOAD) != 0
3868 || (flags & SEC_HAS_CONTENTS) != 0)
3869 off += sec->_raw_size;
3870
3871 if ((flags & SEC_ALLOC) != 0)
3872 voff += sec->_raw_size;
3873 }
3874
3875 if (p->p_type == PT_NOTE && bfd_get_format (abfd) == bfd_core)
3876 {
4a938328
MS		 3877 /* The actual "note" segment has i == 0.
3878 This is the one that actually contains everything. */
3879 if (i == 0)
3880 {
252b5132
RH		 3881 sec->filepos = off;
3882 p->p_filesz = sec->_raw_size;
3883 off += sec->_raw_size;
3884 voff = off;
3885 }
4a938328 3886 else
252b5132 3887 {
4a938328 3888 /* Fake sections -- don't need to be written. */
252b5132
RH		 3889 sec->filepos = 0;
3890 sec->_raw_size = 0;
4a938328 3891 flags = sec->flags = 0;
252b5132
RH		 3892 }
3893 p->p_memsz = 0;
3894 p->p_align = 1;
3895 }
3896 else
3897 {
3898 p->p_memsz += sec->_raw_size;
3899
3900 if ((flags & SEC_LOAD) != 0)
3901 p->p_filesz += sec->_raw_size;
3902
13ae64f3
JJ		 3903 if (p->p_type == PT_TLS
3904 && sec->_raw_size == 0
3905 && (sec->flags & SEC_HAS_CONTENTS) == 0)
3906 {
3907 struct bfd_link_order *o;
3908 bfd_vma tbss_size = 0;
3909
3910 for (o = sec->link_order_head; o != NULL; o = o->next)
3911 if (tbss_size < o->offset + o->size)
3912 tbss_size = o->offset + o->size;
3913
3914 p->p_memsz += tbss_size;
3915 }
3916
252b5132
RH		 3917 if (align > p->p_align
3918 && (p->p_type != PT_LOAD || (abfd->flags & D_PAGED) == 0))
3919 p->p_align = align;
3920 }
3921
3922 if (! m->p_flags_valid)
3923 {
3924 p->p_flags |= PF_R;
3925 if ((flags & SEC_CODE) != 0)
3926 p->p_flags |= PF_X;
3927 if ((flags & SEC_READONLY) == 0)
3928 p->p_flags |= PF_W;
3929 }
3930 }
3931 }
3932
3933 /* Now that we have set the section file positions, we can set up
3934 the file positions for the non PT_LOAD segments. */
3935 for (m = elf_tdata (abfd)->segment_map, p = phdrs;
3936 m != NULL;
3937 m = m->next, p++)
3938 {
3939 if (p->p_type != PT_LOAD && m->count > 0)
3940 {
3941 BFD_ASSERT (! m->includes_filehdr && ! m->includes_phdrs);
3942 p->p_offset = m->sections[0]->filepos;
3943 }
3944 if (m->count == 0)
3945 {
3946 if (m->includes_filehdr)
3947 {
3948 p->p_vaddr = filehdr_vaddr;
3949 if (! m->p_paddr_valid)
3950 p->p_paddr = filehdr_paddr;
3951 }
3952 else if (m->includes_phdrs)
3953 {
3954 p->p_vaddr = phdrs_vaddr;
3955 if (! m->p_paddr_valid)
3956 p->p_paddr = phdrs_paddr;
3957 }
3958 }
3959 }
3960
3961 /* Clear out any program headers we allocated but did not use. */
3962 for (; count < alloc; count++, p++)
3963 {
3964 memset (p, 0, sizeof *p);
3965 p->p_type = PT_NULL;
3966 }
3967
3968 elf_tdata (abfd)->phdr = phdrs;
3969
3970 elf_tdata (abfd)->next_file_pos = off;
3971
3972 /* Write out the program headers. */
dc810e39 3973 if (bfd_seek (abfd, (bfd_signed_vma) bed->s->sizeof_ehdr, SEEK_SET) != 0
252b5132
RH		 3974 || bed->s->write_out_phdrs (abfd, phdrs, alloc) != 0)
3975 return false;
3976
3977 return true;
3978}
3979
3980/* Get the size of the program header.
3981
3982 If this is called by the linker before any of the section VMA's are set, it
3983 can't calculate the correct value for a strange memory layout. This only
3984 happens when SIZEOF_HEADERS is used in a linker script. In this case,
3985 SORTED_HDRS is NULL and we assume the normal scenario of one text and one
3986 data segment (exclusive of .interp and .dynamic).
3987
3988 ??? User written scripts must either not use SIZEOF_HEADERS, or assume there
3989 will be two segments. */
3990
3991static bfd_size_type
3992get_program_header_size (abfd)
3993 bfd *abfd;
3994{
3995 size_t segs;
3996 asection *s;
3997 struct elf_backend_data *bed = get_elf_backend_data (abfd);
3998
3999 /* We can't return a different result each time we're called. */
4000 if (elf_tdata (abfd)->program_header_size != 0)
4001 return elf_tdata (abfd)->program_header_size;
4002
4003 if (elf_tdata (abfd)->segment_map != NULL)
4004 {
4005 struct elf_segment_map *m;
4006
4007 segs = 0;
4008 for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
4009 ++segs;
4010 elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr;
4011 return elf_tdata (abfd)->program_header_size;
4012 }
4013
4014 /* Assume we will need exactly two PT_LOAD segments: one for text
4015 and one for data. */
4016 segs = 2;
4017
4018 s = bfd_get_section_by_name (abfd, ".interp");
4019 if (s != NULL && (s->flags & SEC_LOAD) != 0)
4020 {
4021 /* If we have a loadable interpreter section, we need a
4022 PT_INTERP segment. In this case, assume we also need a
4023 PT_PHDR segment, although that may not be true for all
4024 targets. */
4025 segs += 2;
4026 }
4027
4028 if (bfd_get_section_by_name (abfd, ".dynamic") != NULL)
4029 {
4030 /* We need a PT_DYNAMIC segment. */
4031 ++segs;
4032 }
4033
126495ed 4034 if (elf_tdata (abfd)->eh_frame_hdr)
65765700
JJ		 4035 {
4036 /* We need a PT_GNU_EH_FRAME segment. */
4037 ++segs;
4038 }
4039
252b5132
RH		 4040 for (s = abfd->sections; s != NULL; s = s->next)
4041 {
4042 if ((s->flags & SEC_LOAD) != 0
4043 && strncmp (s->name, ".note", 5) == 0)
4044 {
4045 /* We need a PT_NOTE segment. */
4046 ++segs;
4047 }
4048 }
4049
13ae64f3
JJ		 4050 for (s = abfd->sections; s != NULL; s = s->next)
4051 {
4052 if (s->flags & SEC_THREAD_LOCAL)
4053 {
4054 /* We need a PT_TLS segment. */
4055 ++segs;
4056 break;
4057 }
4058 }
4059
252b5132
RH		 4060 /* Let the backend count up any program headers it might need. */
4061 if (bed->elf_backend_additional_program_headers)
4062 {
4063 int a;
4064
4065 a = (*bed->elf_backend_additional_program_headers) (abfd);
4066 if (a == -1)
4067 abort ();
4068 segs += a;
4069 }
4070
4071 elf_tdata (abfd)->program_header_size = segs * bed->s->sizeof_phdr;
4072 return elf_tdata (abfd)->program_header_size;
4073}
4074
4075/* Work out the file positions of all the sections. This is called by
4076 _bfd_elf_compute_section_file_positions. All the section sizes and
4077 VMAs must be known before this is called.
4078
4079 We do not consider reloc sections at this point, unless they form
4080 part of the loadable image. Reloc sections are assigned file
4081 positions in assign_file_positions_for_relocs, which is called by
4082 write_object_contents and final_link.
4083
4084 We also don't set the positions of the .symtab and .strtab here. */
4085
4086static boolean
4087assign_file_positions_except_relocs (abfd)
4088 bfd *abfd;
4089{
4090 struct elf_obj_tdata * const tdata = elf_tdata (abfd);
4091 Elf_Internal_Ehdr * const i_ehdrp = elf_elfheader (abfd);
4092 Elf_Internal_Shdr ** const i_shdrpp = elf_elfsections (abfd);
9ad5cbcf 4093 unsigned int num_sec = elf_numsections (abfd);
252b5132
RH		 4094 file_ptr off;
4095 struct elf_backend_data *bed = get_elf_backend_data (abfd);
4096
4097 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0
4098 && bfd_get_format (abfd) != bfd_core)
4099 {
4100 Elf_Internal_Shdr **hdrpp;
4101 unsigned int i;
4102
4103 /* Start after the ELF header. */
4104 off = i_ehdrp->e_ehsize;
4105
4106 /* We are not creating an executable, which means that we are
4107 not creating a program header, and that the actual order of
4108 the sections in the file is unimportant. */
9ad5cbcf 4109 for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++)
252b5132
RH		 4110 {
4111 Elf_Internal_Shdr *hdr;
4112
4113 hdr = *hdrpp;
9ad5cbcf
AM		 4114 if (hdr->sh_type == SHT_REL
4115 || hdr->sh_type == SHT_RELA
4116 || i == tdata->symtab_section
4117 || i == tdata->symtab_shndx_section
252b5132
RH		 4118 || i == tdata->strtab_section)
4119 {
4120 hdr->sh_offset = -1;
252b5132 4121 }
9ad5cbcf
AM		 4122 else
4123 off = _bfd_elf_assign_file_position_for_section (hdr, off, true);
252b5132 4124
9ad5cbcf
AM		 4125 if (i == SHN_LORESERVE - 1)
4126 {
4127 i += SHN_HIRESERVE + 1 - SHN_LORESERVE;
4128 hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE;
4129 }
252b5132
RH		 4130 }
4131 }
4132 else
4133 {
4134 unsigned int i;
4135 Elf_Internal_Shdr **hdrpp;
4136
4137 /* Assign file positions for the loaded sections based on the
4138 assignment of sections to segments. */
4139 if (! assign_file_positions_for_segments (abfd))
4140 return false;
4141
4142 /* Assign file positions for the other sections. */
4143
4144 off = elf_tdata (abfd)->next_file_pos;
9ad5cbcf 4145 for (i = 1, hdrpp = i_shdrpp + 1; i < num_sec; i++, hdrpp++)
252b5132
RH		 4146 {
4147 Elf_Internal_Shdr *hdr;
4148
4149 hdr = *hdrpp;
4150 if (hdr->bfd_section != NULL
4151 && hdr->bfd_section->filepos != 0)
4152 hdr->sh_offset = hdr->bfd_section->filepos;
4153 else if ((hdr->sh_flags & SHF_ALLOC) != 0)
4154 {
4155 ((*_bfd_error_handler)
4156 (_("%s: warning: allocated section `%s' not in segment"),
4157 bfd_get_filename (abfd),
4158 (hdr->bfd_section == NULL
4159 ? "*unknown*"
4160 : hdr->bfd_section->name)));
4161 if ((abfd->flags & D_PAGED) != 0)
4162 off += (hdr->sh_addr - off) % bed->maxpagesize;
4163 else
4164 off += (hdr->sh_addr - off) % hdr->sh_addralign;
4165 off = _bfd_elf_assign_file_position_for_section (hdr, off,
4166 false);
4167 }
4168 else if (hdr->sh_type == SHT_REL
4169 || hdr->sh_type == SHT_RELA
4170 || hdr == i_shdrpp[tdata->symtab_section]
9ad5cbcf 4171 || hdr == i_shdrpp[tdata->symtab_shndx_section]
252b5132
RH		 4172 || hdr == i_shdrpp[tdata->strtab_section])
4173 hdr->sh_offset = -1;
4174 else
4175 off = _bfd_elf_assign_file_position_for_section (hdr, off, true);
9ad5cbcf
AM		 4176
4177 if (i == SHN_LORESERVE - 1)
4178 {
4179 i += SHN_HIRESERVE + 1 - SHN_LORESERVE;
4180 hdrpp += SHN_HIRESERVE + 1 - SHN_LORESERVE;
4181 }
252b5132
RH		 4182 }
4183 }
4184
4185 /* Place the section headers. */
4186 off = align_file_position (off, bed->s->file_align);
4187 i_ehdrp->e_shoff = off;
4188 off += i_ehdrp->e_shnum * i_ehdrp->e_shentsize;
4189
4190 elf_tdata (abfd)->next_file_pos = off;
4191
4192 return true;
4193}
4194
4195static boolean
4196prep_headers (abfd)
4197 bfd *abfd;
4198{
4199 Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
4200 Elf_Internal_Phdr *i_phdrp = 0; /* Program header table, internal form */
4201 Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */
2b0f7ef9 4202 struct elf_strtab_hash *shstrtab;
252b5132
RH		 4203 struct elf_backend_data *bed = get_elf_backend_data (abfd);
4204
4205 i_ehdrp = elf_elfheader (abfd);
4206 i_shdrp = elf_elfsections (abfd);
4207
2b0f7ef9 4208 shstrtab = _bfd_elf_strtab_init ();
252b5132
RH		 4209 if (shstrtab == NULL)
4210 return false;
4211
4212 elf_shstrtab (abfd) = shstrtab;
4213
4214 i_ehdrp->e_ident[EI_MAG0] = ELFMAG0;
4215 i_ehdrp->e_ident[EI_MAG1] = ELFMAG1;
4216 i_ehdrp->e_ident[EI_MAG2] = ELFMAG2;
4217 i_ehdrp->e_ident[EI_MAG3] = ELFMAG3;
4218
4219 i_ehdrp->e_ident[EI_CLASS] = bed->s->elfclass;
4220 i_ehdrp->e_ident[EI_DATA] =
4221 bfd_big_endian (abfd) ? ELFDATA2MSB : ELFDATA2LSB;
4222 i_ehdrp->e_ident[EI_VERSION] = bed->s->ev_current;
4223
252b5132
RH		 4224 if ((abfd->flags & DYNAMIC) != 0)
4225 i_ehdrp->e_type = ET_DYN;
4226 else if ((abfd->flags & EXEC_P) != 0)
4227 i_ehdrp->e_type = ET_EXEC;
4228 else if (bfd_get_format (abfd) == bfd_core)
4229 i_ehdrp->e_type = ET_CORE;
4230 else
4231 i_ehdrp->e_type = ET_REL;
4232
4233 switch (bfd_get_arch (abfd))
4234 {
4235 case bfd_arch_unknown:
4236 i_ehdrp->e_machine = EM_NONE;
4237 break;
aa4f99bb
AO		 4238
4239 /* There used to be a long list of cases here, each one setting
4240 e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE
4241 in the corresponding bfd definition. To avoid duplication,
4242 the switch was removed. Machines that need special handling
4243 can generally do it in elf_backend_final_write_processing(),
4244 unless they need the information earlier than the final write.
4245 Such need can generally be supplied by replacing the tests for
4246 e_machine with the conditions used to determine it. */
252b5132 4247 default:
aa4f99bb
AO		 4248 if (get_elf_backend_data (abfd) != NULL)
4249 i_ehdrp->e_machine = get_elf_backend_data (abfd)->elf_machine_code;
4250 else
4251 i_ehdrp->e_machine = EM_NONE;
4252 }
4253
252b5132
RH		 4254 i_ehdrp->e_version = bed->s->ev_current;
4255 i_ehdrp->e_ehsize = bed->s->sizeof_ehdr;
4256
c044fabd 4257 /* No program header, for now. */
252b5132
RH		 4258 i_ehdrp->e_phoff = 0;
4259 i_ehdrp->e_phentsize = 0;
4260 i_ehdrp->e_phnum = 0;
4261
c044fabd 4262 /* Each bfd section is section header entry. */
252b5132
RH		 4263 i_ehdrp->e_entry = bfd_get_start_address (abfd);
4264 i_ehdrp->e_shentsize = bed->s->sizeof_shdr;
4265
c044fabd 4266 /* If we're building an executable, we'll need a program header table. */
252b5132
RH		 4267 if (abfd->flags & EXEC_P)
4268 {
c044fabd 4269 /* It all happens later. */
252b5132
RH		 4270#if 0
4271 i_ehdrp->e_phentsize = sizeof (Elf_External_Phdr);
4272
4273 /* elf_build_phdrs() returns a (NULL-terminated) array of
c044fabd 4274 Elf_Internal_Phdrs. */
252b5132
RH		 4275 i_phdrp = elf_build_phdrs (abfd, i_ehdrp, i_shdrp, &i_ehdrp->e_phnum);
4276 i_ehdrp->e_phoff = outbase;
4277 outbase += i_ehdrp->e_phentsize * i_ehdrp->e_phnum;
4278#endif
4279 }
4280 else
4281 {
4282 i_ehdrp->e_phentsize = 0;
4283 i_phdrp = 0;
4284 i_ehdrp->e_phoff = 0;
4285 }
4286
4287 elf_tdata (abfd)->symtab_hdr.sh_name =
2b0f7ef9 4288 (unsigned int) _bfd_elf_strtab_add (shstrtab, ".symtab", false);
252b5132 4289 elf_tdata (abfd)->strtab_hdr.sh_name =
2b0f7ef9 4290 (unsigned int) _bfd_elf_strtab_add (shstrtab, ".strtab", false);
252b5132 4291 elf_tdata (abfd)->shstrtab_hdr.sh_name =
2b0f7ef9 4292 (unsigned int) _bfd_elf_strtab_add (shstrtab, ".shstrtab", false);
252b5132
RH		 4293 if (elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1
4294 || elf_tdata (abfd)->symtab_hdr.sh_name == (unsigned int) -1
4295 || elf_tdata (abfd)->shstrtab_hdr.sh_name == (unsigned int) -1)
4296 return false;
4297
4298 return true;
4299}
4300
4301/* Assign file positions for all the reloc sections which are not part
4302 of the loadable file image. */
4303
4304void
4305_bfd_elf_assign_file_positions_for_relocs (abfd)
4306 bfd *abfd;
4307{
4308 file_ptr off;
9ad5cbcf 4309 unsigned int i, num_sec;
252b5132
RH		 4310 Elf_Internal_Shdr **shdrpp;
4311
4312 off = elf_tdata (abfd)->next_file_pos;
4313
9ad5cbcf
AM		 4314 num_sec = elf_numsections (abfd);
4315 for (i = 1, shdrpp = elf_elfsections (abfd) + 1; i < num_sec; i++, shdrpp++)
252b5132
RH		 4316 {
4317 Elf_Internal_Shdr *shdrp;
4318
4319 shdrp = *shdrpp;
4320 if ((shdrp->sh_type == SHT_REL || shdrp->sh_type == SHT_RELA)
4321 && shdrp->sh_offset == -1)
4322 off = _bfd_elf_assign_file_position_for_section (shdrp, off, true);
4323 }
4324
4325 elf_tdata (abfd)->next_file_pos = off;
4326}
4327
4328boolean
4329_bfd_elf_write_object_contents (abfd)
4330 bfd *abfd;
4331{
4332 struct elf_backend_data *bed = get_elf_backend_data (abfd);
4333 Elf_Internal_Ehdr *i_ehdrp;
4334 Elf_Internal_Shdr **i_shdrp;
4335 boolean failed;
9ad5cbcf 4336 unsigned int count, num_sec;
252b5132
RH		 4337
4338 if (! abfd->output_has_begun
4339 && ! _bfd_elf_compute_section_file_positions
4340 (abfd, (struct bfd_link_info *) NULL))
4341 return false;
4342
4343 i_shdrp = elf_elfsections (abfd);
4344 i_ehdrp = elf_elfheader (abfd);
4345
4346 failed = false;
4347 bfd_map_over_sections (abfd, bed->s->write_relocs, &failed);
4348 if (failed)
4349 return false;
4350
4351 _bfd_elf_assign_file_positions_for_relocs (abfd);
4352
c044fabd 4353 /* After writing the headers, we need to write the sections too... */
9ad5cbcf
AM		 4354 num_sec = elf_numsections (abfd);
4355 for (count = 1; count < num_sec; count++)
252b5132
RH		 4356 {
4357 if (bed->elf_backend_section_processing)
4358 (*bed->elf_backend_section_processing) (abfd, i_shdrp[count]);
4359 if (i_shdrp[count]->contents)
4360 {
dc810e39
AM		 4361 bfd_size_type amt = i_shdrp[count]->sh_size;
4362
252b5132 4363 if (bfd_seek (abfd, i_shdrp[count]->sh_offset, SEEK_SET) != 0
dc810e39 4364 || bfd_bwrite (i_shdrp[count]->contents, amt, abfd) != amt)
252b5132
RH		 4365 return false;
4366 }
9ad5cbcf
AM		 4367 if (count == SHN_LORESERVE - 1)
4368 count += SHN_HIRESERVE + 1 - SHN_LORESERVE;
252b5132
RH		 4369 }
4370
4371 /* Write out the section header names. */
4372 if (bfd_seek (abfd, elf_tdata (abfd)->shstrtab_hdr.sh_offset, SEEK_SET) != 0
2b0f7ef9 4373 || ! _bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd)))
252b5132
RH		 4374 return false;
4375
4376 if (bed->elf_backend_final_write_processing)
4377 (*bed->elf_backend_final_write_processing) (abfd,
4378 elf_tdata (abfd)->linker);
4379
4380 return bed->s->write_shdrs_and_ehdr (abfd);
4381}
4382
4383boolean
4384_bfd_elf_write_corefile_contents (abfd)
4385 bfd *abfd;
4386{
c044fabd 4387 /* Hopefully this can be done just like an object file. */
252b5132
RH		 4388 return _bfd_elf_write_object_contents (abfd);
4389}
c044fabd
KH		 4390
4391/* Given a section, search the header to find them. */
4392
252b5132
RH		 4393int
4394_bfd_elf_section_from_bfd_section (abfd, asect)
4395 bfd *abfd;
4396 struct sec *asect;
4397{
af746e92 4398 struct elf_backend_data *bed;
252b5132 4399 int index;
252b5132 4400
9ad5cbcf
AM		 4401 if (elf_section_data (asect) != NULL
4402 && elf_section_data (asect)->this_idx != 0)
4403 return elf_section_data (asect)->this_idx;
4404
4405 if (bfd_is_abs_section (asect))
af746e92
AM		 4406 index = SHN_ABS;
4407 else if (bfd_is_com_section (asect))
4408 index = SHN_COMMON;
4409 else if (bfd_is_und_section (asect))
4410 index = SHN_UNDEF;
4411 else
252b5132 4412 {
af746e92
AM		 4413 Elf_Internal_Shdr **i_shdrp = elf_elfsections (abfd);
4414 int maxindex = elf_numsections (abfd);
4415
4416 for (index = 1; index < maxindex; index++)
4417 {
4418 Elf_Internal_Shdr *hdr = i_shdrp[index];
4419
4420 if (hdr != NULL && hdr->bfd_section == asect)
4421 return index;
4422 }
4423 index = -1;
252b5132
RH		 4424 }
4425
af746e92 4426 bed = get_elf_backend_data (abfd);
252b5132
RH		 4427 if (bed->elf_backend_section_from_bfd_section)
4428 {
af746e92 4429 int retval = index;
9ad5cbcf 4430
af746e92
AM		 4431 if ((*bed->elf_backend_section_from_bfd_section) (abfd, asect, &retval))
4432 return retval;
252b5132
RH		 4433 }
4434
af746e92
AM		 4435 if (index == -1)
4436 bfd_set_error (bfd_error_nonrepresentable_section);
252b5132 4437
af746e92 4438 return index;
252b5132
RH		 4439}
4440
4441/* Given a BFD symbol, return the index in the ELF symbol table, or -1
4442 on error. */
4443
4444int
4445_bfd_elf_symbol_from_bfd_symbol (abfd, asym_ptr_ptr)
4446 bfd *abfd;
4447 asymbol **asym_ptr_ptr;
4448{
4449 asymbol *asym_ptr = *asym_ptr_ptr;
4450 int idx;
4451 flagword flags = asym_ptr->flags;
4452
4453 /* When gas creates relocations against local labels, it creates its
4454 own symbol for the section, but does put the symbol into the
4455 symbol chain, so udata is 0. When the linker is generating
4456 relocatable output, this section symbol may be for one of the
4457 input sections rather than the output section. */
4458 if (asym_ptr->udata.i == 0
4459 && (flags & BSF_SECTION_SYM)
4460 && asym_ptr->section)
4461 {
4462 int indx;
4463
4464 if (asym_ptr->section->output_section != NULL)
4465 indx = asym_ptr->section->output_section->index;
4466 else
4467 indx = asym_ptr->section->index;
4e89ac30
L		 4468 if (indx < elf_num_section_syms (abfd)
4469 && elf_section_syms (abfd)[indx] != NULL)
252b5132
RH		 4470 asym_ptr->udata.i = elf_section_syms (abfd)[indx]->udata.i;
4471 }
4472
4473 idx = asym_ptr->udata.i;
4474
4475 if (idx == 0)
4476 {
4477 /* This case can occur when using --strip-symbol on a symbol
4478 which is used in a relocation entry. */
4479 (*_bfd_error_handler)
4480 (_("%s: symbol `%s' required but not present"),
8f615d07 4481 bfd_archive_filename (abfd), bfd_asymbol_name (asym_ptr));
252b5132
RH		 4482 bfd_set_error (bfd_error_no_symbols);
4483 return -1;
4484 }
4485
4486#if DEBUG & 4
4487 {
4488 fprintf (stderr,
661a3fd4 4489 "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n",
252b5132
RH		 4490 (long) asym_ptr, asym_ptr->name, idx, flags,
4491 elf_symbol_flags (flags));
4492 fflush (stderr);
4493 }
4494#endif
4495
4496 return idx;
4497}
4498
4499/* Copy private BFD data. This copies any program header information. */
4500
4501static boolean
4502copy_private_bfd_data (ibfd, obfd)
4503 bfd *ibfd;
4504 bfd *obfd;
4505{
bc67d8a6
NC		 4506 Elf_Internal_Ehdr * iehdr;
4507 struct elf_segment_map * map;
4508 struct elf_segment_map * map_first;
4509 struct elf_segment_map ** pointer_to_map;
4510 Elf_Internal_Phdr * segment;
4511 asection * section;
4512 unsigned int i;
4513 unsigned int num_segments;
4514 boolean phdr_included = false;
4515 bfd_vma maxpagesize;
4516 struct elf_segment_map * phdr_adjust_seg = NULL;
4517 unsigned int phdr_adjust_num = 0;
caf47ea6 4518 struct elf_backend_data * bed;
bc67d8a6 4519
c044fabd 4520 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
252b5132
RH		 4521 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4522 return true;
4523
4524 if (elf_tdata (ibfd)->phdr == NULL)
4525 return true;
4526
caf47ea6 4527 bed = get_elf_backend_data (ibfd);
252b5132
RH		 4528 iehdr = elf_elfheader (ibfd);
4529
bc67d8a6 4530 map_first = NULL;
c044fabd 4531 pointer_to_map = &map_first;
252b5132
RH		 4532
4533 num_segments = elf_elfheader (ibfd)->e_phnum;
bc67d8a6
NC		 4534 maxpagesize = get_elf_backend_data (obfd)->maxpagesize;
4535
4536 /* Returns the end address of the segment + 1. */
aecc8f8a
AM		 4537#define SEGMENT_END(segment, start) \
4538 (start + (segment->p_memsz > segment->p_filesz \
4539 ? segment->p_memsz : segment->p_filesz))
bc67d8a6
NC		 4540
4541 /* Returns true if the given section is contained within
4542 the given segment. VMA addresses are compared. */
aecc8f8a
AM		 4543#define IS_CONTAINED_BY_VMA(section, segment) \
4544 (section->vma >= segment->p_vaddr \
4545 && (section->vma + section->_raw_size \
4546 <= (SEGMENT_END (segment, segment->p_vaddr))))
c044fabd 4547
bc67d8a6
NC		 4548 /* Returns true if the given section is contained within
4549 the given segment. LMA addresses are compared. */
aecc8f8a
AM		 4550#define IS_CONTAINED_BY_LMA(section, segment, base) \
4551 (section->lma >= base \
4552 && (section->lma + section->_raw_size \
4553 <= SEGMENT_END (segment, base)))
252b5132 4554
c044fabd 4555 /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */
aecc8f8a
AM		 4556#define IS_COREFILE_NOTE(p, s) \
4557 (p->p_type == PT_NOTE \
4558 && bfd_get_format (ibfd) == bfd_core \
4559 && s->vma == 0 && s->lma == 0 \
4560 && (bfd_vma) s->filepos >= p->p_offset \
4561 && ((bfd_vma) s->filepos + s->_raw_size \
4562 <= p->p_offset + p->p_filesz))
252b5132
RH		 4563
4564 /* The complicated case when p_vaddr is 0 is to handle the Solaris
4565 linker, which generates a PT_INTERP section with p_vaddr and
4566 p_memsz set to 0. */
aecc8f8a
AM		 4567#define IS_SOLARIS_PT_INTERP(p, s) \
4568 (p->p_vaddr == 0 \
4569 && p->p_paddr == 0 \
4570 && p->p_memsz == 0 \
4571 && p->p_filesz > 0 \
4572 && (s->flags & SEC_HAS_CONTENTS) != 0 \
4573 && s->_raw_size > 0 \
4574 && (bfd_vma) s->filepos >= p->p_offset \
4575 && ((bfd_vma) s->filepos + s->_raw_size \
4576 <= p->p_offset + p->p_filesz))
5c440b1e 4577
bc67d8a6
NC		 4578 /* Decide if the given section should be included in the given segment.
4579 A section will be included if:
f5ffc919
NC		 4580 1. It is within the address space of the segment -- we use the LMA
4581 if that is set for the segment and the VMA otherwise,
bc67d8a6
NC		 4582 2. It is an allocated segment,
4583 3. There is an output section associated with it,
4584 4. The section has not already been allocated to a previous segment. */
caf47ea6 4585#define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \
aecc8f8a
AM		 4586 ((((segment->p_paddr \
4587 ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \
4588 : IS_CONTAINED_BY_VMA (section, segment)) \
f5ffc919 4589 && (section->flags & SEC_ALLOC) != 0) \
b6821651 4590 || IS_COREFILE_NOTE (segment, section)) \
f5ffc919 4591 && section->output_section != NULL \
82e51918 4592 && ! section->segment_mark)
bc67d8a6
NC		 4593
4594 /* Returns true iff seg1 starts after the end of seg2. */
aecc8f8a
AM		 4595#define SEGMENT_AFTER_SEGMENT(seg1, seg2) \
4596 (seg1->p_vaddr >= SEGMENT_END (seg2, seg2->p_vaddr))
bc67d8a6
NC		 4597
4598 /* Returns true iff seg1 and seg2 overlap. */
aecc8f8a
AM		 4599#define SEGMENT_OVERLAPS(seg1, seg2) \
4600 (!(SEGMENT_AFTER_SEGMENT (seg1, seg2) \
4601 || SEGMENT_AFTER_SEGMENT (seg2, seg1)))
bc67d8a6
NC		 4602
4603 /* Initialise the segment mark field. */
4604 for (section = ibfd->sections; section != NULL; section = section->next)
4605 section->segment_mark = false;
4606
252b5132 4607 /* Scan through the segments specified in the program header
bc67d8a6 4608 of the input BFD. For this first scan we look for overlaps
9ad5cbcf 4609 in the loadable segments. These can be created by weird
aecc8f8a 4610 parameters to objcopy. Also, fix some solaris weirdness. */
bc67d8a6
NC		 4611 for (i = 0, segment = elf_tdata (ibfd)->phdr;
4612 i < num_segments;
c044fabd 4613 i++, segment++)
252b5132 4614 {
252b5132 4615 unsigned int j;
c044fabd 4616 Elf_Internal_Phdr *segment2;
252b5132 4617
aecc8f8a
AM		 4618 if (segment->p_type == PT_INTERP)
4619 for (section = ibfd->sections; section; section = section->next)
4620 if (IS_SOLARIS_PT_INTERP (segment, section))
4621 {
4622 /* Mininal change so that the normal section to segment
4623 assigment code will work. */
4624 segment->p_vaddr = section->vma;
4625 break;
4626 }
4627
bc67d8a6
NC		 4628 if (segment->p_type != PT_LOAD)
4629 continue;
c044fabd 4630
bc67d8a6 4631 /* Determine if this segment overlaps any previous segments. */
c044fabd 4632 for (j = 0, segment2 = elf_tdata (ibfd)->phdr; j < i; j++, segment2 ++)
bc67d8a6
NC		 4633 {
4634 bfd_signed_vma extra_length;
c044fabd 4635
bc67d8a6
NC		 4636 if (segment2->p_type != PT_LOAD
4637 || ! SEGMENT_OVERLAPS (segment, segment2))
4638 continue;
c044fabd 4639
bc67d8a6
NC		 4640 /* Merge the two segments together. */
4641 if (segment2->p_vaddr < segment->p_vaddr)
4642 {
c044fabd
KH		 4643 /* Extend SEGMENT2 to include SEGMENT and then delete
4644 SEGMENT. */
bc67d8a6
NC		 4645 extra_length =
4646 SEGMENT_END (segment, segment->p_vaddr)
4647 - SEGMENT_END (segment2, segment2->p_vaddr);
c044fabd 4648
bc67d8a6
NC		 4649 if (extra_length > 0)
4650 {
4651 segment2->p_memsz += extra_length;
4652 segment2->p_filesz += extra_length;
4653 }
c044fabd 4654
bc67d8a6 4655 segment->p_type = PT_NULL;
c044fabd 4656
bc67d8a6
NC		 4657 /* Since we have deleted P we must restart the outer loop. */
4658 i = 0;
4659 segment = elf_tdata (ibfd)->phdr;
4660 break;
4661 }
4662 else
4663 {
c044fabd
KH		 4664 /* Extend SEGMENT to include SEGMENT2 and then delete
4665 SEGMENT2. */
bc67d8a6
NC		 4666 extra_length =
4667 SEGMENT_END (segment2, segment2->p_vaddr)
4668 - SEGMENT_END (segment, segment->p_vaddr);
c044fabd 4669
bc67d8a6
NC		 4670 if (extra_length > 0)
4671 {
4672 segment->p_memsz += extra_length;
4673 segment->p_filesz += extra_length;
4674 }
c044fabd 4675
bc67d8a6
NC		 4676 segment2->p_type = PT_NULL;
4677 }
4678 }
4679 }
c044fabd 4680
bc67d8a6
NC		 4681 /* The second scan attempts to assign sections to segments. */
4682 for (i = 0, segment = elf_tdata (ibfd)->phdr;
4683 i < num_segments;
4684 i ++, segment ++)
4685 {
4686 unsigned int section_count;
4687 asection ** sections;
4688 asection * output_section;
4689 unsigned int isec;
4690 bfd_vma matching_lma;
4691 bfd_vma suggested_lma;
4692 unsigned int j;
dc810e39 4693 bfd_size_type amt;
bc67d8a6
NC		 4694
4695 if (segment->p_type == PT_NULL)
4696 continue;
c044fabd 4697
bc67d8a6
NC		 4698 /* Compute how many sections might be placed into this segment. */
4699 section_count = 0;
4700 for (section = ibfd->sections; section != NULL; section = section->next)
caf47ea6 4701 if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed))
c044fabd 4702 ++section_count;
252b5132
RH		 4703
4704 /* Allocate a segment map big enough to contain all of the
4705 sections we have selected. */
dc810e39
AM		 4706 amt = sizeof (struct elf_segment_map);
4707 amt += ((bfd_size_type) section_count - 1) * sizeof (asection *);
4708 map = (struct elf_segment_map *) bfd_alloc (obfd, amt);
bc67d8a6 4709 if (map == NULL)
252b5132
RH		 4710 return false;
4711
4712 /* Initialise the fields of the segment map. Default to
4713 using the physical address of the segment in the input BFD. */
bc67d8a6
NC		 4714 map->next = NULL;
4715 map->p_type = segment->p_type;
4716 map->p_flags = segment->p_flags;
4717 map->p_flags_valid = 1;
4718 map->p_paddr = segment->p_paddr;
4719 map->p_paddr_valid = 1;
252b5132
RH		 4720
4721 /* Determine if this segment contains the ELF file header
4722 and if it contains the program headers themselves. */
bc67d8a6
NC		 4723 map->includes_filehdr = (segment->p_offset == 0
4724 && segment->p_filesz >= iehdr->e_ehsize);
252b5132 4725
bc67d8a6 4726 map->includes_phdrs = 0;
252b5132 4727
bc67d8a6 4728 if (! phdr_included || segment->p_type != PT_LOAD)
252b5132 4729 {
bc67d8a6
NC		 4730 map->includes_phdrs =
4731 (segment->p_offset <= (bfd_vma) iehdr->e_phoff
4732 && (segment->p_offset + segment->p_filesz
252b5132
RH		 4733 >= ((bfd_vma) iehdr->e_phoff
4734 + iehdr->e_phnum * iehdr->e_phentsize)));
c044fabd 4735
bc67d8a6 4736 if (segment->p_type == PT_LOAD && map->includes_phdrs)
252b5132
RH		 4737 phdr_included = true;
4738 }
4739
bc67d8a6 4740 if (section_count == 0)
252b5132
RH		 4741 {
4742 /* Special segments, such as the PT_PHDR segment, may contain
4743 no sections, but ordinary, loadable segments should contain
1ed89aa9
NC		 4744 something. They are allowed by the ELF spec however, so only
4745 a warning is produced. */
bc67d8a6 4746 if (segment->p_type == PT_LOAD)
caf47ea6 4747 (*_bfd_error_handler)
1ed89aa9 4748 (_("%s: warning: Empty loadable segment detected, is this intentional ?\n"),
caf47ea6 4749 bfd_archive_filename (ibfd));
252b5132 4750
bc67d8a6 4751 map->count = 0;
c044fabd
KH		 4752 *pointer_to_map = map;
4753 pointer_to_map = &map->next;
252b5132
RH		 4754
4755 continue;
4756 }
4757
4758 /* Now scan the sections in the input BFD again and attempt
4759 to add their corresponding output sections to the segment map.
4760 The problem here is how to handle an output section which has
4761 been moved (ie had its LMA changed). There are four possibilities:
4762
4763 1. None of the sections have been moved.
4764 In this case we can continue to use the segment LMA from the
4765 input BFD.
4766
4767 2. All of the sections have been moved by the same amount.
4768 In this case we can change the segment's LMA to match the LMA
4769 of the first section.
4770
4771 3. Some of the sections have been moved, others have not.
4772 In this case those sections which have not been moved can be
4773 placed in the current segment which will have to have its size,
4774 and possibly its LMA changed, and a new segment or segments will
4775 have to be created to contain the other sections.
4776
4777 4. The sections have been moved, but not be the same amount.
4778 In this case we can change the segment's LMA to match the LMA
4779 of the first section and we will have to create a new segment
4780 or segments to contain the other sections.
4781
4782 In order to save time, we allocate an array to hold the section
4783 pointers that we are interested in. As these sections get assigned
4784 to a segment, they are removed from this array. */
4785
0b14c2aa
L		 4786 /* Gcc 2.96 miscompiles this code on mips. Don't do casting here
4787 to work around this long long bug. */
4788 amt = section_count * sizeof (asection *);
dc810e39 4789 sections = (asection **) bfd_malloc (amt);
252b5132
RH		 4790 if (sections == NULL)
4791 return false;
4792
4793 /* Step One: Scan for segment vs section LMA conflicts.
4794 Also add the sections to the section array allocated above.
4795 Also add the sections to the current segment. In the common
4796 case, where the sections have not been moved, this means that
4797 we have completely filled the segment, and there is nothing
4798 more to do. */
252b5132 4799 isec = 0;
72730e0c 4800 matching_lma = 0;
252b5132
RH		 4801 suggested_lma = 0;
4802
bc67d8a6
NC		 4803 for (j = 0, section = ibfd->sections;
4804 section != NULL;
4805 section = section->next)
252b5132 4806 {
caf47ea6 4807 if (INCLUDE_SECTION_IN_SEGMENT (section, segment, bed))
c0f7859b 4808 {
bc67d8a6
NC		 4809 output_section = section->output_section;
4810
4811 sections[j ++] = section;
252b5132
RH		 4812
4813 /* The Solaris native linker always sets p_paddr to 0.
4814 We try to catch that case here, and set it to the
5e8d7549
NC		 4815 correct value. Note - some backends require that
4816 p_paddr be left as zero. */
bc67d8a6 4817 if (segment->p_paddr == 0
4455705d 4818 && segment->p_vaddr != 0
5e8d7549 4819 && (! bed->want_p_paddr_set_to_zero)
252b5132 4820 && isec == 0
bc67d8a6
NC		 4821 && output_section->lma != 0
4822 && (output_section->vma == (segment->p_vaddr
4823 + (map->includes_filehdr
4824 ? iehdr->e_ehsize
4825 : 0)
4826 + (map->includes_phdrs
079e9a2f
AM		 4827 ? (iehdr->e_phnum
4828 * iehdr->e_phentsize)
bc67d8a6
NC		 4829 : 0))))
4830 map->p_paddr = segment->p_vaddr;
252b5132
RH		 4831
4832 /* Match up the physical address of the segment with the
4833 LMA address of the output section. */
bc67d8a6 4834 if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr)
5e8d7549
NC		 4835 || IS_COREFILE_NOTE (segment, section)
4836 || (bed->want_p_paddr_set_to_zero &&
4837 IS_CONTAINED_BY_VMA (output_section, segment))
4838 )
252b5132
RH		 4839 {
4840 if (matching_lma == 0)
bc67d8a6 4841 matching_lma = output_section->lma;
252b5132
RH		 4842
4843 /* We assume that if the section fits within the segment
bc67d8a6 4844 then it does not overlap any other section within that
252b5132 4845 segment. */
bc67d8a6 4846 map->sections[isec ++] = output_section;
252b5132
RH		 4847 }
4848 else if (suggested_lma == 0)
bc67d8a6 4849 suggested_lma = output_section->lma;
252b5132
RH		 4850 }
4851 }
4852
bc67d8a6 4853 BFD_ASSERT (j == section_count);
252b5132
RH		 4854
4855 /* Step Two: Adjust the physical address of the current segment,
4856 if necessary. */
bc67d8a6 4857 if (isec == section_count)
252b5132
RH		 4858 {
4859 /* All of the sections fitted within the segment as currently
4860 specified. This is the default case. Add the segment to
4861 the list of built segments and carry on to process the next
4862 program header in the input BFD. */
bc67d8a6 4863 map->count = section_count;
c044fabd
KH		 4864 *pointer_to_map = map;
4865 pointer_to_map = &map->next;
252b5132
RH		 4866
4867 free (sections);
4868 continue;
4869 }
252b5132
RH		 4870 else
4871 {
72730e0c
AM		 4872 if (matching_lma != 0)
4873 {
4874 /* At least one section fits inside the current segment.
4875 Keep it, but modify its physical address to match the
4876 LMA of the first section that fitted. */
bc67d8a6 4877 map->p_paddr = matching_lma;
72730e0c
AM		 4878 }
4879 else
4880 {
4881 /* None of the sections fitted inside the current segment.
4882 Change the current segment's physical address to match
4883 the LMA of the first section. */
bc67d8a6 4884 map->p_paddr = suggested_lma;
72730e0c
AM		 4885 }
4886
bc67d8a6
NC		 4887 /* Offset the segment physical address from the lma
4888 to allow for space taken up by elf headers. */
4889 if (map->includes_filehdr)
4890 map->p_paddr -= iehdr->e_ehsize;
252b5132 4891
bc67d8a6
NC		 4892 if (map->includes_phdrs)
4893 {
4894 map->p_paddr -= iehdr->e_phnum * iehdr->e_phentsize;
4895
4896 /* iehdr->e_phnum is just an estimate of the number
4897 of program headers that we will need. Make a note
4898 here of the number we used and the segment we chose
4899 to hold these headers, so that we can adjust the
4900 offset when we know the correct value. */
4901 phdr_adjust_num = iehdr->e_phnum;
4902 phdr_adjust_seg = map;
4903 }
252b5132
RH		 4904 }
4905
4906 /* Step Three: Loop over the sections again, this time assigning
caf47ea6 4907 those that fit to the current segment and removing them from the
252b5132
RH		 4908 sections array; but making sure not to leave large gaps. Once all
4909 possible sections have been assigned to the current segment it is
4910 added to the list of built segments and if sections still remain
4911 to be assigned, a new segment is constructed before repeating
4912 the loop. */
4913 isec = 0;
4914 do
4915 {
bc67d8a6 4916 map->count = 0;
252b5132
RH		 4917 suggested_lma = 0;
4918
4919 /* Fill the current segment with sections that fit. */
bc67d8a6 4920 for (j = 0; j < section_count; j++)
252b5132 4921 {
bc67d8a6 4922 section = sections[j];
252b5132 4923
bc67d8a6 4924 if (section == NULL)
252b5132
RH		 4925 continue;
4926
bc67d8a6 4927 output_section = section->output_section;
252b5132 4928
bc67d8a6 4929 BFD_ASSERT (output_section != NULL);
c044fabd 4930
bc67d8a6
NC		 4931 if (IS_CONTAINED_BY_LMA (output_section, segment, map->p_paddr)
4932 || IS_COREFILE_NOTE (segment, section))
252b5132 4933 {
bc67d8a6 4934 if (map->count == 0)
252b5132
RH		 4935 {
4936 /* If the first section in a segment does not start at
bc67d8a6
NC		 4937 the beginning of the segment, then something is
4938 wrong. */
4939 if (output_section->lma !=
4940 (map->p_paddr
4941 + (map->includes_filehdr ? iehdr->e_ehsize : 0)
4942 + (map->includes_phdrs
4943 ? iehdr->e_phnum * iehdr->e_phentsize
4944 : 0)))
252b5132
RH		 4945 abort ();
4946 }
4947 else
4948 {
4949 asection * prev_sec;
252b5132 4950
bc67d8a6 4951 prev_sec = map->sections[map->count - 1];
252b5132
RH		 4952
4953 /* If the gap between the end of the previous section
bc67d8a6
NC		 4954 and the start of this section is more than
4955 maxpagesize then we need to start a new segment. */
079e9a2f
AM		 4956 if ((BFD_ALIGN (prev_sec->lma + prev_sec->_raw_size,
4957 maxpagesize)
caf47ea6 4958 < BFD_ALIGN (output_section->lma, maxpagesize))
079e9a2f
AM		 4959 || ((prev_sec->lma + prev_sec->_raw_size)
4960 > output_section->lma))
252b5132
RH		 4961 {
4962 if (suggested_lma == 0)
bc67d8a6 4963 suggested_lma = output_section->lma;
252b5132
RH		 4964
4965 continue;
4966 }
4967 }
4968
bc67d8a6 4969 map->sections[map->count++] = output_section;
252b5132
RH		 4970 ++isec;
4971 sections[j] = NULL;
bc67d8a6 4972 section->segment_mark = true;
252b5132
RH		 4973 }
4974 else if (suggested_lma == 0)
bc67d8a6 4975 suggested_lma = output_section->lma;
252b5132
RH		 4976 }
4977
bc67d8a6 4978 BFD_ASSERT (map->count > 0);
252b5132
RH		 4979
4980 /* Add the current segment to the list of built segments. */
c044fabd
KH		 4981 *pointer_to_map = map;
4982 pointer_to_map = &map->next;
252b5132 4983
bc67d8a6 4984 if (isec < section_count)
252b5132
RH		 4985 {
4986 /* We still have not allocated all of the sections to
4987 segments. Create a new segment here, initialise it
4988 and carry on looping. */
dc810e39
AM		 4989 amt = sizeof (struct elf_segment_map);
4990 amt += ((bfd_size_type) section_count - 1) * sizeof (asection *);
4991 map = (struct elf_segment_map *) bfd_alloc (obfd, amt);
bc67d8a6 4992 if (map == NULL)
252b5132
RH		 4993 return false;
4994
4995 /* Initialise the fields of the segment map. Set the physical
4996 physical address to the LMA of the first section that has
4997 not yet been assigned. */
bc67d8a6
NC		 4998 map->next = NULL;
4999 map->p_type = segment->p_type;
5000 map->p_flags = segment->p_flags;
5001 map->p_flags_valid = 1;
5002 map->p_paddr = suggested_lma;
5003 map->p_paddr_valid = 1;
5004 map->includes_filehdr = 0;
5005 map->includes_phdrs = 0;
252b5132
RH		 5006 }
5007 }
bc67d8a6 5008 while (isec < section_count);
252b5132
RH		 5009
5010 free (sections);
5011 }
5012
5013 /* The Solaris linker creates program headers in which all the
5014 p_paddr fields are zero. When we try to objcopy or strip such a
5015 file, we get confused. Check for this case, and if we find it
5016 reset the p_paddr_valid fields. */
bc67d8a6
NC		 5017 for (map = map_first; map != NULL; map = map->next)
5018 if (map->p_paddr != 0)
252b5132 5019 break;
bc67d8a6 5020 if (map == NULL)
252b5132 5021 {
bc67d8a6
NC		 5022 for (map = map_first; map != NULL; map = map->next)
5023 map->p_paddr_valid = 0;
252b5132
RH		 5024 }
5025
bc67d8a6
NC		 5026 elf_tdata (obfd)->segment_map = map_first;
5027
5028 /* If we had to estimate the number of program headers that were
9ad5cbcf 5029 going to be needed, then check our estimate now and adjust
bc67d8a6
NC		 5030 the offset if necessary. */
5031 if (phdr_adjust_seg != NULL)
5032 {
5033 unsigned int count;
c044fabd 5034
bc67d8a6 5035 for (count = 0, map = map_first; map != NULL; map = map->next)
c044fabd 5036 count++;
252b5132 5037
bc67d8a6
NC		 5038 if (count > phdr_adjust_num)
5039 phdr_adjust_seg->p_paddr
5040 -= (count - phdr_adjust_num) * iehdr->e_phentsize;
5041 }
c044fabd 5042
252b5132 5043#if 0
c044fabd
KH		 5044 /* Final Step: Sort the segments into ascending order of physical
5045 address. */
bc67d8a6 5046 if (map_first != NULL)
252b5132 5047 {
c044fabd 5048 struct elf_segment_map *prev;
252b5132 5049
bc67d8a6
NC		 5050 prev = map_first;
5051 for (map = map_first->next; map != NULL; prev = map, map = map->next)
252b5132 5052 {
bc67d8a6
NC		 5053 /* Yes I know - its a bubble sort.... */
5054 if (map->next != NULL && (map->next->p_paddr < map->p_paddr))
252b5132 5055 {
bc67d8a6
NC		 5056 /* Swap map and map->next. */
5057 prev->next = map->next;
5058 map->next = map->next->next;
5059 prev->next->next = map;
252b5132 5060
bc67d8a6
NC		 5061 /* Restart loop. */
5062 map = map_first;
252b5132
RH		 5063 }
5064 }
5065 }
5066#endif
5067
bc67d8a6
NC		 5068#undef SEGMENT_END
5069#undef IS_CONTAINED_BY_VMA
5070#undef IS_CONTAINED_BY_LMA
252b5132 5071#undef IS_COREFILE_NOTE
bc67d8a6
NC		 5072#undef IS_SOLARIS_PT_INTERP
5073#undef INCLUDE_SECTION_IN_SEGMENT
5074#undef SEGMENT_AFTER_SEGMENT
5075#undef SEGMENT_OVERLAPS
252b5132
RH		 5076 return true;
5077}
5078
5079/* Copy private section information. This copies over the entsize
5080 field, and sometimes the info field. */
5081
5082boolean
5083_bfd_elf_copy_private_section_data (ibfd, isec, obfd, osec)
5084 bfd *ibfd;
5085 asection *isec;
5086 bfd *obfd;
5087 asection *osec;
5088{
5089 Elf_Internal_Shdr *ihdr, *ohdr;
5090
5091 if (ibfd->xvec->flavour != bfd_target_elf_flavour
5092 || obfd->xvec->flavour != bfd_target_elf_flavour)
5093 return true;
5094
ad12c1c5 5095 if (elf_tdata (obfd)->segment_map == NULL && elf_tdata (ibfd)->phdr != NULL)
caf47ea6
AM		 5096 {
5097 asection *s;
5098
5099 /* Only set up the segments if there are no more SEC_ALLOC
5100 sections. FIXME: This won't do the right thing if objcopy is
5101 used to remove the last SEC_ALLOC section, since objcopy
5102 won't call this routine in that case. */
5103 for (s = isec->next; s != NULL; s = s->next)
5104 if ((s->flags & SEC_ALLOC) != 0)
5105 break;
5106 if (s == NULL)
5107 {
5108 if (! copy_private_bfd_data (ibfd, obfd))
5109 return false;
5110 }
252b5132
RH		 5111 }
5112
5113 ihdr = &elf_section_data (isec)->this_hdr;
5114 ohdr = &elf_section_data (osec)->this_hdr;
5115
5116 ohdr->sh_entsize = ihdr->sh_entsize;
5117
5118 if (ihdr->sh_type == SHT_SYMTAB
5119 || ihdr->sh_type == SHT_DYNSYM
5120 || ihdr->sh_type == SHT_GNU_verneed
5121 || ihdr->sh_type == SHT_GNU_verdef)
5122 ohdr->sh_info = ihdr->sh_info;
5123
9dce4196
AM		 5124 /* Set things up for objcopy. The output SHT_GROUP section will
5125 have its elf_next_in_group pointing back to the input group
5126 members. */
5127 elf_next_in_group (osec) = elf_next_in_group (isec);
5128 elf_group_name (osec) = elf_group_name (isec);
5129
bf572ba0
MM		 5130 elf_section_data (osec)->use_rela_p
5131 = elf_section_data (isec)->use_rela_p;
5132
252b5132
RH		 5133 return true;
5134}
5135
5136/* Copy private symbol information. If this symbol is in a section
5137 which we did not map into a BFD section, try to map the section
5138 index correctly. We use special macro definitions for the mapped
5139 section indices; these definitions are interpreted by the
5140 swap_out_syms function. */
5141
9ad5cbcf
AM		 5142#define MAP_ONESYMTAB (SHN_HIOS + 1)
5143#define MAP_DYNSYMTAB (SHN_HIOS + 2)
5144#define MAP_STRTAB (SHN_HIOS + 3)
5145#define MAP_SHSTRTAB (SHN_HIOS + 4)
5146#define MAP_SYM_SHNDX (SHN_HIOS + 5)
252b5132
RH		 5147
5148boolean
5149_bfd_elf_copy_private_symbol_data (ibfd, isymarg, obfd, osymarg)
5150 bfd *ibfd;
5151 asymbol *isymarg;
5152 bfd *obfd;
5153 asymbol *osymarg;
5154{
5155 elf_symbol_type *isym, *osym;
5156
5157 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
5158 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
5159 return true;
5160
5161 isym = elf_symbol_from (ibfd, isymarg);
5162 osym = elf_symbol_from (obfd, osymarg);
5163
5164 if (isym != NULL
5165 && osym != NULL
5166 && bfd_is_abs_section (isym->symbol.section))
5167 {
5168 unsigned int shndx;
5169
5170 shndx = isym->internal_elf_sym.st_shndx;
5171 if (shndx == elf_onesymtab (ibfd))
5172 shndx = MAP_ONESYMTAB;
5173 else if (shndx == elf_dynsymtab (ibfd))
5174 shndx = MAP_DYNSYMTAB;
5175 else if (shndx == elf_tdata (ibfd)->strtab_section)
5176 shndx = MAP_STRTAB;
5177 else if (shndx == elf_tdata (ibfd)->shstrtab_section)
5178 shndx = MAP_SHSTRTAB;
9ad5cbcf
AM		 5179 else if (shndx == elf_tdata (ibfd)->symtab_shndx_section)
5180 shndx = MAP_SYM_SHNDX;
252b5132
RH		 5181 osym->internal_elf_sym.st_shndx = shndx;
5182 }
5183
5184 return true;
5185}
5186
5187/* Swap out the symbols. */
5188
5189static boolean
5190swap_out_syms (abfd, sttp, relocatable_p)
5191 bfd *abfd;
5192 struct bfd_strtab_hash **sttp;
5193 int relocatable_p;
5194{
079e9a2f
AM		 5195 struct elf_backend_data *bed;
5196 int symcount;
5197 asymbol **syms;
5198 struct bfd_strtab_hash *stt;
5199 Elf_Internal_Shdr *symtab_hdr;
9ad5cbcf 5200 Elf_Internal_Shdr *symtab_shndx_hdr;
079e9a2f
AM		 5201 Elf_Internal_Shdr *symstrtab_hdr;
5202 char *outbound_syms;
9ad5cbcf 5203 char *outbound_shndx;
079e9a2f
AM		 5204 int idx;
5205 bfd_size_type amt;
252b5132
RH		 5206
5207 if (!elf_map_symbols (abfd))
5208 return false;
5209
c044fabd 5210 /* Dump out the symtabs. */
079e9a2f
AM		 5211 stt = _bfd_elf_stringtab_init ();
5212 if (stt == NULL)
5213 return false;
252b5132 5214
079e9a2f
AM		 5215 bed = get_elf_backend_data (abfd);
5216 symcount = bfd_get_symcount (abfd);
5217 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
5218 symtab_hdr->sh_type = SHT_SYMTAB;
5219 symtab_hdr->sh_entsize = bed->s->sizeof_sym;
5220 symtab_hdr->sh_size = symtab_hdr->sh_entsize * (symcount + 1);
5221 symtab_hdr->sh_info = elf_num_locals (abfd) + 1;
5222 symtab_hdr->sh_addralign = bed->s->file_align;
5223
5224 symstrtab_hdr = &elf_tdata (abfd)->strtab_hdr;
5225 symstrtab_hdr->sh_type = SHT_STRTAB;
5226
5227 amt = (bfd_size_type) (1 + symcount) * bed->s->sizeof_sym;
5228 outbound_syms = bfd_alloc (abfd, amt);
5229 if (outbound_syms == NULL)
5230 return false;
5231 symtab_hdr->contents = (PTR) outbound_syms;
252b5132 5232
9ad5cbcf
AM		 5233 outbound_shndx = NULL;
5234 symtab_shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr;
5235 if (symtab_shndx_hdr->sh_name != 0)
5236 {
5237 amt = (bfd_size_type) (1 + symcount) * sizeof (Elf_External_Sym_Shndx);
1126897b 5238 outbound_shndx = bfd_zalloc (abfd, amt);
9ad5cbcf
AM		 5239 if (outbound_shndx == NULL)
5240 return false;
9ad5cbcf
AM		 5241 symtab_shndx_hdr->contents = outbound_shndx;
5242 symtab_shndx_hdr->sh_type = SHT_SYMTAB_SHNDX;
5243 symtab_shndx_hdr->sh_size = amt;
5244 symtab_shndx_hdr->sh_addralign = sizeof (Elf_External_Sym_Shndx);
5245 symtab_shndx_hdr->sh_entsize = sizeof (Elf_External_Sym_Shndx);
5246 }
5247
079e9a2f
AM		 5248 /* now generate the data (for "contents") */
5249 {
5250 /* Fill in zeroth symbol and swap it out. */
5251 Elf_Internal_Sym sym;
5252 sym.st_name = 0;
5253 sym.st_value = 0;
5254 sym.st_size = 0;
5255 sym.st_info = 0;
5256 sym.st_other = 0;
5257 sym.st_shndx = SHN_UNDEF;
9ad5cbcf 5258 bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx);
079e9a2f 5259 outbound_syms += bed->s->sizeof_sym;
9ad5cbcf
AM		 5260 if (outbound_shndx != NULL)
5261 outbound_shndx += sizeof (Elf_External_Sym_Shndx);
079e9a2f 5262 }
252b5132 5263
079e9a2f
AM		 5264 syms = bfd_get_outsymbols (abfd);
5265 for (idx = 0; idx < symcount; idx++)
252b5132 5266 {
252b5132 5267 Elf_Internal_Sym sym;
079e9a2f
AM		 5268 bfd_vma value = syms[idx]->value;
5269 elf_symbol_type *type_ptr;
5270 flagword flags = syms[idx]->flags;
5271 int type;
252b5132 5272
079e9a2f
AM		 5273 if ((flags & (BSF_SECTION_SYM | BSF_GLOBAL)) == BSF_SECTION_SYM)
5274 {
5275 /* Local section symbols have no name. */
5276 sym.st_name = 0;
5277 }
5278 else
5279 {
5280 sym.st_name = (unsigned long) _bfd_stringtab_add (stt,
5281 syms[idx]->name,
5282 true, false);
5283 if (sym.st_name == (unsigned long) -1)
5284 return false;
5285 }
252b5132 5286
079e9a2f 5287 type_ptr = elf_symbol_from (abfd, syms[idx]);
252b5132 5288
079e9a2f
AM		 5289 if ((flags & BSF_SECTION_SYM) == 0
5290 && bfd_is_com_section (syms[idx]->section))
5291 {
5292 /* ELF common symbols put the alignment into the `value' field,
5293 and the size into the `size' field. This is backwards from
5294 how BFD handles it, so reverse it here. */
5295 sym.st_size = value;
5296 if (type_ptr == NULL
5297 || type_ptr->internal_elf_sym.st_value == 0)
5298 sym.st_value = value >= 16 ? 16 : (1 << bfd_log2 (value));
5299 else
5300 sym.st_value = type_ptr->internal_elf_sym.st_value;
5301 sym.st_shndx = _bfd_elf_section_from_bfd_section
5302 (abfd, syms[idx]->section);
5303 }
5304 else
5305 {
5306 asection *sec = syms[idx]->section;
5307 int shndx;
252b5132 5308
079e9a2f
AM		 5309 if (sec->output_section)
5310 {
5311 value += sec->output_offset;
5312 sec = sec->output_section;
5313 }
5314 /* Don't add in the section vma for relocatable output. */
5315 if (! relocatable_p)
5316 value += sec->vma;
5317 sym.st_value = value;
5318 sym.st_size = type_ptr ? type_ptr->internal_elf_sym.st_size : 0;
5319
5320 if (bfd_is_abs_section (sec)
5321 && type_ptr != NULL
5322 && type_ptr->internal_elf_sym.st_shndx != 0)
5323 {
5324 /* This symbol is in a real ELF section which we did
5325 not create as a BFD section. Undo the mapping done
5326 by copy_private_symbol_data. */
5327 shndx = type_ptr->internal_elf_sym.st_shndx;
5328 switch (shndx)
5329 {
5330 case MAP_ONESYMTAB:
5331 shndx = elf_onesymtab (abfd);
5332 break;
5333 case MAP_DYNSYMTAB:
5334 shndx = elf_dynsymtab (abfd);
5335 break;
5336 case MAP_STRTAB:
5337 shndx = elf_tdata (abfd)->strtab_section;
5338 break;
5339 case MAP_SHSTRTAB:
5340 shndx = elf_tdata (abfd)->shstrtab_section;
5341 break;
9ad5cbcf
AM		 5342 case MAP_SYM_SHNDX:
5343 shndx = elf_tdata (abfd)->symtab_shndx_section;
5344 break;
079e9a2f
AM		 5345 default:
5346 break;
5347 }
5348 }
5349 else
5350 {
5351 shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
252b5132 5352
079e9a2f
AM		 5353 if (shndx == -1)
5354 {
5355 asection *sec2;
5356
5357 /* Writing this would be a hell of a lot easier if
5358 we had some decent documentation on bfd, and
5359 knew what to expect of the library, and what to
5360 demand of applications. For example, it
5361 appears that `objcopy' might not set the
5362 section of a symbol to be a section that is
5363 actually in the output file. */
5364 sec2 = bfd_get_section_by_name (abfd, sec->name);
5365 BFD_ASSERT (sec2 != 0);
5366 shndx = _bfd_elf_section_from_bfd_section (abfd, sec2);
5367 BFD_ASSERT (shndx != -1);
5368 }
5369 }
252b5132 5370
079e9a2f
AM		 5371 sym.st_shndx = shndx;
5372 }
252b5132 5373
13ae64f3
JJ		 5374 if ((flags & BSF_THREAD_LOCAL) != 0)
5375 type = STT_TLS;
5376 else if ((flags & BSF_FUNCTION) != 0)
079e9a2f
AM		 5377 type = STT_FUNC;
5378 else if ((flags & BSF_OBJECT) != 0)
5379 type = STT_OBJECT;
5380 else
5381 type = STT_NOTYPE;
252b5132 5382
13ae64f3
JJ		 5383 if (syms[idx]->section->flags & SEC_THREAD_LOCAL)
5384 type = STT_TLS;
5385
079e9a2f
AM		 5386 /* Processor-specific types */
5387 if (type_ptr != NULL
5388 && bed->elf_backend_get_symbol_type)
5389 type = ((*bed->elf_backend_get_symbol_type)
5390 (&type_ptr->internal_elf_sym, type));
252b5132 5391
079e9a2f
AM		 5392 if (flags & BSF_SECTION_SYM)
5393 {
5394 if (flags & BSF_GLOBAL)
5395 sym.st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION);
5396 else
5397 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
5398 }
5399 else if (bfd_is_com_section (syms[idx]->section))
5400 sym.st_info = ELF_ST_INFO (STB_GLOBAL, type);
5401 else if (bfd_is_und_section (syms[idx]->section))
5402 sym.st_info = ELF_ST_INFO (((flags & BSF_WEAK)
5403 ? STB_WEAK
5404 : STB_GLOBAL),
5405 type);
5406 else if (flags & BSF_FILE)
5407 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FILE);
5408 else
5409 {
5410 int bind = STB_LOCAL;
252b5132 5411
079e9a2f
AM		 5412 if (flags & BSF_LOCAL)
5413 bind = STB_LOCAL;
5414 else if (flags & BSF_WEAK)
5415 bind = STB_WEAK;
5416 else if (flags & BSF_GLOBAL)
5417 bind = STB_GLOBAL;
252b5132 5418
079e9a2f
AM		 5419 sym.st_info = ELF_ST_INFO (bind, type);
5420 }
252b5132 5421
079e9a2f
AM		 5422 if (type_ptr != NULL)
5423 sym.st_other = type_ptr->internal_elf_sym.st_other;
5424 else
5425 sym.st_other = 0;
252b5132 5426
9ad5cbcf 5427 bed->s->swap_symbol_out (abfd, &sym, outbound_syms, outbound_shndx);
079e9a2f 5428 outbound_syms += bed->s->sizeof_sym;
9ad5cbcf
AM		 5429 if (outbound_shndx != NULL)
5430 outbound_shndx += sizeof (Elf_External_Sym_Shndx);
079e9a2f 5431 }
252b5132 5432
079e9a2f
AM		 5433 *sttp = stt;
5434 symstrtab_hdr->sh_size = _bfd_stringtab_size (stt);
5435 symstrtab_hdr->sh_type = SHT_STRTAB;
252b5132 5436
079e9a2f
AM		 5437 symstrtab_hdr->sh_flags = 0;
5438 symstrtab_hdr->sh_addr = 0;
5439 symstrtab_hdr->sh_entsize = 0;
5440 symstrtab_hdr->sh_link = 0;
5441 symstrtab_hdr->sh_info = 0;
5442 symstrtab_hdr->sh_addralign = 1;
252b5132
RH		 5443
5444 return true;
5445}
5446
5447/* Return the number of bytes required to hold the symtab vector.
5448
5449 Note that we base it on the count plus 1, since we will null terminate
5450 the vector allocated based on this size. However, the ELF symbol table
5451 always has a dummy entry as symbol #0, so it ends up even. */
5452
5453long
5454_bfd_elf_get_symtab_upper_bound (abfd)
5455 bfd *abfd;
5456{
5457 long symcount;
5458 long symtab_size;
5459 Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->symtab_hdr;
5460
5461 symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym;
b99d1833
AM		 5462 symtab_size = (symcount + 1) * (sizeof (asymbol *));
5463 if (symcount > 0)
5464 symtab_size -= sizeof (asymbol *);
252b5132
RH		 5465
5466 return symtab_size;
5467}
5468
5469long
5470_bfd_elf_get_dynamic_symtab_upper_bound (abfd)
5471 bfd *abfd;
5472{
5473 long symcount;
5474 long symtab_size;
5475 Elf_Internal_Shdr *hdr = &elf_tdata (abfd)->dynsymtab_hdr;
5476
5477 if (elf_dynsymtab (abfd) == 0)
5478 {
5479 bfd_set_error (bfd_error_invalid_operation);
5480 return -1;
5481 }
5482
5483 symcount = hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym;
b99d1833
AM		 5484 symtab_size = (symcount + 1) * (sizeof (asymbol *));
5485 if (symcount > 0)
5486 symtab_size -= sizeof (asymbol *);
252b5132
RH		 5487
5488 return symtab_size;
5489}
5490
5491long
5492_bfd_elf_get_reloc_upper_bound (abfd, asect)
7442e600 5493 bfd *abfd ATTRIBUTE_UNUSED;
252b5132
RH		 5494 sec_ptr asect;
5495{
5496 return (asect->reloc_count + 1) * sizeof (arelent *);
5497}
5498
5499/* Canonicalize the relocs. */
5500
5501long
5502_bfd_elf_canonicalize_reloc (abfd, section, relptr, symbols)
5503 bfd *abfd;
5504 sec_ptr section;
5505 arelent **relptr;
5506 asymbol **symbols;
5507{
5508 arelent *tblptr;
5509 unsigned int i;
dbb410c3 5510 struct elf_backend_data *bed = get_elf_backend_data (abfd);
252b5132 5511
dbb410c3 5512 if (! bed->s->slurp_reloc_table (abfd, section, symbols, false))
252b5132
RH		 5513 return -1;
5514
5515 tblptr = section->relocation;
5516 for (i = 0; i < section->reloc_count; i++)
5517 *relptr++ = tblptr++;
5518
5519 *relptr = NULL;
5520
5521 return section->reloc_count;
5522}
5523
5524long
5525_bfd_elf_get_symtab (abfd, alocation)
5526 bfd *abfd;
5527 asymbol **alocation;
5528{
dbb410c3
AM		 5529 struct elf_backend_data *bed = get_elf_backend_data (abfd);
5530 long symcount = bed->s->slurp_symbol_table (abfd, alocation, false);
252b5132
RH		 5531
5532 if (symcount >= 0)
5533 bfd_get_symcount (abfd) = symcount;
5534 return symcount;
5535}
5536
5537long
5538_bfd_elf_canonicalize_dynamic_symtab (abfd, alocation)
5539 bfd *abfd;
5540 asymbol **alocation;
5541{
dbb410c3 5542 struct elf_backend_data *bed = get_elf_backend_data (abfd);
1f70368c
DJ		 5543 long symcount = bed->s->slurp_symbol_table (abfd, alocation, true);
5544
5545 if (symcount >= 0)
5546 bfd_get_dynamic_symcount (abfd) = symcount;
5547 return symcount;
252b5132
RH		 5548}
5549
5550/* Return the size required for the dynamic reloc entries. Any
5551 section that was actually installed in the BFD, and has type
5552 SHT_REL or SHT_RELA, and uses the dynamic symbol table, is
5553 considered to be a dynamic reloc section. */
5554
5555long
5556_bfd_elf_get_dynamic_reloc_upper_bound (abfd)
5557 bfd *abfd;
5558{
5559 long ret;
5560 asection *s;
5561
5562 if (elf_dynsymtab (abfd) == 0)
5563 {
5564 bfd_set_error (bfd_error_invalid_operation);
5565 return -1;
5566 }
5567
5568 ret = sizeof (arelent *);
5569 for (s = abfd->sections; s != NULL; s = s->next)
5570 if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
5571 && (elf_section_data (s)->this_hdr.sh_type == SHT_REL
5572 || elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
5573 ret += ((s->_raw_size / elf_section_data (s)->this_hdr.sh_entsize)
5574 * sizeof (arelent *));
5575
5576 return ret;
5577}
5578
5579/* Canonicalize the dynamic relocation entries. Note that we return
5580 the dynamic relocations as a single block, although they are
5581 actually associated with particular sections; the interface, which
5582 was designed for SunOS style shared libraries, expects that there
5583 is only one set of dynamic relocs. Any section that was actually
5584 installed in the BFD, and has type SHT_REL or SHT_RELA, and uses
5585 the dynamic symbol table, is considered to be a dynamic reloc
5586 section. */
5587
5588long
5589_bfd_elf_canonicalize_dynamic_reloc (abfd, storage, syms)
5590 bfd *abfd;
5591 arelent **storage;
5592 asymbol **syms;
5593{
5594 boolean (*slurp_relocs) PARAMS ((bfd *, asection *, asymbol **, boolean));
5595 asection *s;
5596 long ret;
5597
5598 if (elf_dynsymtab (abfd) == 0)
5599 {
5600 bfd_set_error (bfd_error_invalid_operation);
5601 return -1;
5602 }
5603
5604 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
5605 ret = 0;
5606 for (s = abfd->sections; s != NULL; s = s->next)
5607 {
5608 if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
5609 && (elf_section_data (s)->this_hdr.sh_type == SHT_REL
5610 || elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
5611 {
5612 arelent *p;
5613 long count, i;
5614
5615 if (! (*slurp_relocs) (abfd, s, syms, true))
5616 return -1;
5617 count = s->_raw_size / elf_section_data (s)->this_hdr.sh_entsize;
5618 p = s->relocation;
5619 for (i = 0; i < count; i++)
5620 *storage++ = p++;
5621 ret += count;
5622 }
5623 }
5624
5625 *storage = NULL;
5626
5627 return ret;
5628}
5629\f
5630/* Read in the version information. */
5631
5632boolean
5633_bfd_elf_slurp_version_tables (abfd)
5634 bfd *abfd;
5635{
5636 bfd_byte *contents = NULL;
dc810e39 5637 bfd_size_type amt;
252b5132
RH		 5638
5639 if (elf_dynverdef (abfd) != 0)
5640 {
5641 Elf_Internal_Shdr *hdr;
5642 Elf_External_Verdef *everdef;
5643 Elf_Internal_Verdef *iverdef;
f631889e
UD		 5644 Elf_Internal_Verdef *iverdefarr;
5645 Elf_Internal_Verdef iverdefmem;
252b5132 5646 unsigned int i;
062e2358 5647 unsigned int maxidx;
252b5132
RH		 5648
5649 hdr = &elf_tdata (abfd)->dynverdef_hdr;
5650
252b5132
RH		 5651 contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
5652 if (contents == NULL)
5653 goto error_return;
5654 if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
dc810e39 5655 || bfd_bread ((PTR) contents, hdr->sh_size, abfd) != hdr->sh_size)
252b5132
RH		 5656 goto error_return;
5657
f631889e
UD		 5658 /* We know the number of entries in the section but not the maximum
5659 index. Therefore we have to run through all entries and find
5660 the maximum. */
252b5132 5661 everdef = (Elf_External_Verdef *) contents;
f631889e
UD		 5662 maxidx = 0;
5663 for (i = 0; i < hdr->sh_info; ++i)
5664 {
5665 _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem);
5666
062e2358
AM		 5667 if ((iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION)) > maxidx)
5668 maxidx = iverdefmem.vd_ndx & ((unsigned) VERSYM_VERSION);
f631889e
UD		 5669
5670 everdef = ((Elf_External_Verdef *)
5671 ((bfd_byte *) everdef + iverdefmem.vd_next));
5672 }
5673
dc810e39
AM		 5674 amt = (bfd_size_type) maxidx * sizeof (Elf_Internal_Verdef);
5675 elf_tdata (abfd)->verdef = (Elf_Internal_Verdef *) bfd_zalloc (abfd, amt);
f631889e
UD		 5676 if (elf_tdata (abfd)->verdef == NULL)
5677 goto error_return;
5678
5679 elf_tdata (abfd)->cverdefs = maxidx;
5680
5681 everdef = (Elf_External_Verdef *) contents;
5682 iverdefarr = elf_tdata (abfd)->verdef;
5683 for (i = 0; i < hdr->sh_info; i++)
252b5132
RH		 5684 {
5685 Elf_External_Verdaux *everdaux;
5686 Elf_Internal_Verdaux *iverdaux;
5687 unsigned int j;
5688
f631889e
UD		 5689 _bfd_elf_swap_verdef_in (abfd, everdef, &iverdefmem);
5690
5691 iverdef = &iverdefarr[(iverdefmem.vd_ndx & VERSYM_VERSION) - 1];
5692 memcpy (iverdef, &iverdefmem, sizeof (Elf_Internal_Verdef));
252b5132
RH		 5693
5694 iverdef->vd_bfd = abfd;
5695
dc810e39
AM		 5696 amt = (bfd_size_type) iverdef->vd_cnt * sizeof (Elf_Internal_Verdaux);
5697 iverdef->vd_auxptr = (Elf_Internal_Verdaux *) bfd_alloc (abfd, amt);
252b5132
RH		 5698 if (iverdef->vd_auxptr == NULL)
5699 goto error_return;
5700
5701 everdaux = ((Elf_External_Verdaux *)
5702 ((bfd_byte *) everdef + iverdef->vd_aux));
5703 iverdaux = iverdef->vd_auxptr;
5704 for (j = 0; j < iverdef->vd_cnt; j++, iverdaux++)
5705 {
5706 _bfd_elf_swap_verdaux_in (abfd, everdaux, iverdaux);
5707
5708 iverdaux->vda_nodename =
5709 bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
5710 iverdaux->vda_name);
5711 if (iverdaux->vda_nodename == NULL)
5712 goto error_return;
5713
5714 if (j + 1 < iverdef->vd_cnt)
5715 iverdaux->vda_nextptr = iverdaux + 1;
5716 else
5717 iverdaux->vda_nextptr = NULL;
5718
5719 everdaux = ((Elf_External_Verdaux *)
5720 ((bfd_byte *) everdaux + iverdaux->vda_next));
5721 }
5722
5723 iverdef->vd_nodename = iverdef->vd_auxptr->vda_nodename;
5724
5725 if (i + 1 < hdr->sh_info)
5726 iverdef->vd_nextdef = iverdef + 1;
5727 else
5728 iverdef->vd_nextdef = NULL;
5729
5730 everdef = ((Elf_External_Verdef *)
5731 ((bfd_byte *) everdef + iverdef->vd_next));
5732 }
5733
5734 free (contents);
5735 contents = NULL;
5736 }
5737
5738 if (elf_dynverref (abfd) != 0)
5739 {
5740 Elf_Internal_Shdr *hdr;
5741 Elf_External_Verneed *everneed;
5742 Elf_Internal_Verneed *iverneed;
5743 unsigned int i;
5744
5745 hdr = &elf_tdata (abfd)->dynverref_hdr;
5746
dc810e39 5747 amt = (bfd_size_type) hdr->sh_info * sizeof (Elf_Internal_Verneed);
252b5132 5748 elf_tdata (abfd)->verref =
dc810e39 5749 (Elf_Internal_Verneed *) bfd_zalloc (abfd, amt);
252b5132
RH		 5750 if (elf_tdata (abfd)->verref == NULL)
5751 goto error_return;
5752
5753 elf_tdata (abfd)->cverrefs = hdr->sh_info;
5754
5755 contents = (bfd_byte *) bfd_malloc (hdr->sh_size);
5756 if (contents == NULL)
5757 goto error_return;
5758 if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) != 0
dc810e39 5759 || bfd_bread ((PTR) contents, hdr->sh_size, abfd) != hdr->sh_size)
252b5132
RH		 5760 goto error_return;
5761
5762 everneed = (Elf_External_Verneed *) contents;
5763 iverneed = elf_tdata (abfd)->verref;
5764 for (i = 0; i < hdr->sh_info; i++, iverneed++)
5765 {
5766 Elf_External_Vernaux *evernaux;
5767 Elf_Internal_Vernaux *ivernaux;
5768 unsigned int j;
5769
5770 _bfd_elf_swap_verneed_in (abfd, everneed, iverneed);
5771
5772 iverneed->vn_bfd = abfd;
5773
5774 iverneed->vn_filename =
5775 bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
5776 iverneed->vn_file);
5777 if (iverneed->vn_filename == NULL)
5778 goto error_return;
5779
dc810e39
AM		 5780 amt = iverneed->vn_cnt;
5781 amt *= sizeof (Elf_Internal_Vernaux);
5782 iverneed->vn_auxptr = (Elf_Internal_Vernaux *) bfd_alloc (abfd, amt);
252b5132
RH		 5783
5784 evernaux = ((Elf_External_Vernaux *)
5785 ((bfd_byte *) everneed + iverneed->vn_aux));
5786 ivernaux = iverneed->vn_auxptr;
5787 for (j = 0; j < iverneed->vn_cnt; j++, ivernaux++)
5788 {
5789 _bfd_elf_swap_vernaux_in (abfd, evernaux, ivernaux);
5790
5791 ivernaux->vna_nodename =
5792 bfd_elf_string_from_elf_section (abfd, hdr->sh_link,
5793 ivernaux->vna_name);
5794 if (ivernaux->vna_nodename == NULL)
5795 goto error_return;
5796
5797 if (j + 1 < iverneed->vn_cnt)
5798 ivernaux->vna_nextptr = ivernaux + 1;
5799 else
5800 ivernaux->vna_nextptr = NULL;
5801
5802 evernaux = ((Elf_External_Vernaux *)
5803 ((bfd_byte *) evernaux + ivernaux->vna_next));
5804 }
5805
5806 if (i + 1 < hdr->sh_info)
5807 iverneed->vn_nextref = iverneed + 1;
5808 else
5809 iverneed->vn_nextref = NULL;
5810
5811 everneed = ((Elf_External_Verneed *)
5812 ((bfd_byte *) everneed + iverneed->vn_next));
5813 }
5814
5815 free (contents);
5816 contents = NULL;
5817 }
5818
5819 return true;
5820
5821 error_return:
5822 if (contents == NULL)
5823 free (contents);
5824 return false;
5825}
5826\f
5827asymbol *
5828_bfd_elf_make_empty_symbol (abfd)
5829 bfd *abfd;
5830{
5831 elf_symbol_type *newsym;
dc810e39 5832 bfd_size_type amt = sizeof (elf_symbol_type);
252b5132 5833
dc810e39 5834 newsym = (elf_symbol_type *) bfd_zalloc (abfd, amt);
252b5132
RH		 5835 if (!newsym)
5836 return NULL;
5837 else
5838 {
5839 newsym->symbol.the_bfd = abfd;
5840 return &newsym->symbol;
5841 }
5842}
5843
5844void
5845_bfd_elf_get_symbol_info (ignore_abfd, symbol, ret)
7442e600 5846 bfd *ignore_abfd ATTRIBUTE_UNUSED;
252b5132
RH		 5847 asymbol *symbol;
5848 symbol_info *ret;
5849{
5850 bfd_symbol_info (symbol, ret);
5851}
5852
5853/* Return whether a symbol name implies a local symbol. Most targets
5854 use this function for the is_local_label_name entry point, but some
5855 override it. */
5856
5857boolean
5858_bfd_elf_is_local_label_name (abfd, name)
7442e600 5859 bfd *abfd ATTRIBUTE_UNUSED;
252b5132
RH		 5860 const char *name;
5861{
5862 /* Normal local symbols start with ``.L''. */
5863 if (name[0] == '.' && name[1] == 'L')
5864 return true;
5865
5866 /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate
5867 DWARF debugging symbols starting with ``..''. */
5868 if (name[0] == '.' && name[1] == '.')
5869 return true;
5870
5871 /* gcc will sometimes generate symbols beginning with ``_.L_'' when
5872 emitting DWARF debugging output. I suspect this is actually a
5873 small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call
5874 ASM_GENERATE_INTERNAL_LABEL, and this causes the leading
5875 underscore to be emitted on some ELF targets). For ease of use,
5876 we treat such symbols as local. */
5877 if (name[0] == '_' && name[1] == '.' && name[2] == 'L' && name[3] == '_')
5878 return true;
5879
5880 return false;
5881}
5882
5883alent *
5884_bfd_elf_get_lineno (ignore_abfd, symbol)
7442e600
ILT		 5885 bfd *ignore_abfd ATTRIBUTE_UNUSED;
5886 asymbol *symbol ATTRIBUTE_UNUSED;
252b5132
RH		 5887{
5888 abort ();
5889 return NULL;
5890}
5891
5892boolean
5893_bfd_elf_set_arch_mach (abfd, arch, machine)
5894 bfd *abfd;
5895 enum bfd_architecture arch;
5896 unsigned long machine;
5897{
5898 /* If this isn't the right architecture for this backend, and this
5899 isn't the generic backend, fail. */
5900 if (arch != get_elf_backend_data (abfd)->arch
5901 && arch != bfd_arch_unknown
5902 && get_elf_backend_data (abfd)->arch != bfd_arch_unknown)
5903 return false;
5904
5905 return bfd_default_set_arch_mach (abfd, arch, machine);
5906}
5907
d1fad7c6
NC		 5908/* Find the function to a particular section and offset,
5909 for error reporting. */
252b5132 5910
d1fad7c6
NC		 5911static boolean
5912elf_find_function (abfd, section, symbols, offset,
4e8a9624 5913 filename_ptr, functionname_ptr)
d1fad7c6 5914 bfd *abfd ATTRIBUTE_UNUSED;
252b5132
RH		 5915 asection *section;
5916 asymbol **symbols;
5917 bfd_vma offset;
4e8a9624
AM		 5918 const char **filename_ptr;
5919 const char **functionname_ptr;
252b5132 5920{
252b5132
RH		 5921 const char *filename;
5922 asymbol *func;
5923 bfd_vma low_func;
5924 asymbol **p;
5925
252b5132
RH		 5926 filename = NULL;
5927 func = NULL;
5928 low_func = 0;
5929
5930 for (p = symbols; *p != NULL; p++)
5931 {
5932 elf_symbol_type *q;
5933
5934 q = (elf_symbol_type *) *p;
5935
5936 if (bfd_get_section (&q->symbol) != section)
5937 continue;
5938
5939 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
5940 {
5941 default:
5942 break;
5943 case STT_FILE:
5944 filename = bfd_asymbol_name (&q->symbol);
5945 break;
5946 case STT_NOTYPE:
5947 case STT_FUNC:
5948 if (q->symbol.section == section
5949 && q->symbol.value >= low_func
5950 && q->symbol.value <= offset)
5951 {
5952 func = (asymbol *) q;
5953 low_func = q->symbol.value;
5954 }
5955 break;
5956 }
5957 }
5958
5959 if (func == NULL)
5960 return false;
5961
d1fad7c6
NC		 5962 if (filename_ptr)
5963 *filename_ptr = filename;
5964 if (functionname_ptr)
5965 *functionname_ptr = bfd_asymbol_name (func);
5966
5967 return true;
5968}
5969
5970/* Find the nearest line to a particular section and offset,
5971 for error reporting. */
5972
5973boolean
5974_bfd_elf_find_nearest_line (abfd, section, symbols, offset,
4e8a9624 5975 filename_ptr, functionname_ptr, line_ptr)
d1fad7c6
NC		 5976 bfd *abfd;
5977 asection *section;
5978 asymbol **symbols;
5979 bfd_vma offset;
4e8a9624
AM		 5980 const char **filename_ptr;
5981 const char **functionname_ptr;
d1fad7c6
NC		 5982 unsigned int *line_ptr;
5983{
5984 boolean found;
5985
5986 if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset,
4e8a9624
AM		 5987 filename_ptr, functionname_ptr,
5988 line_ptr))
d1fad7c6
NC		 5989 {
5990 if (!*functionname_ptr)
4e8a9624
AM		 5991 elf_find_function (abfd, section, symbols, offset,
5992 *filename_ptr ? NULL : filename_ptr,
5993 functionname_ptr);
5994
d1fad7c6
NC		 5995 return true;
5996 }
5997
5998 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
4e8a9624
AM		 5999 filename_ptr, functionname_ptr,
6000 line_ptr, 0,
6001 &elf_tdata (abfd)->dwarf2_find_line_info))
d1fad7c6
NC		 6002 {
6003 if (!*functionname_ptr)
4e8a9624
AM		 6004 elf_find_function (abfd, section, symbols, offset,
6005 *filename_ptr ? NULL : filename_ptr,
6006 functionname_ptr);
6007
d1fad7c6
NC		 6008 return true;
6009 }
6010
6011 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
4e8a9624
AM		 6012 &found, filename_ptr,
6013 functionname_ptr, line_ptr,
6014 &elf_tdata (abfd)->line_info))
d1fad7c6 6015 return false;
dc43ada5 6016 if (found && (*functionname_ptr || *line_ptr))
d1fad7c6
NC		 6017 return true;
6018
6019 if (symbols == NULL)
6020 return false;
6021
6022 if (! elf_find_function (abfd, section, symbols, offset,
4e8a9624 6023 filename_ptr, functionname_ptr))
d1fad7c6
NC		 6024 return false;
6025
252b5132
RH		 6026 *line_ptr = 0;
6027 return true;
6028}
6029
6030int
6031_bfd_elf_sizeof_headers (abfd, reloc)
6032 bfd *abfd;
6033 boolean reloc;
6034{
6035 int ret;
6036
6037 ret = get_elf_backend_data (abfd)->s->sizeof_ehdr;
6038 if (! reloc)
6039 ret += get_program_header_size (abfd);
6040 return ret;
6041}
6042
6043boolean
6044_bfd_elf_set_section_contents (abfd, section, location, offset, count)
6045 bfd *abfd;
6046 sec_ptr section;
6047 PTR location;
6048 file_ptr offset;
6049 bfd_size_type count;
6050{
6051 Elf_Internal_Shdr *hdr;
dc810e39 6052 bfd_signed_vma pos;
252b5132
RH		 6053
6054 if (! abfd->output_has_begun
82e51918
AM		 6055 && ! (_bfd_elf_compute_section_file_positions
6056 (abfd, (struct bfd_link_info *) NULL)))
252b5132
RH		 6057 return false;
6058
6059 hdr = &elf_section_data (section)->this_hdr;
dc810e39
AM		 6060 pos = hdr->sh_offset + offset;
6061 if (bfd_seek (abfd, pos, SEEK_SET) != 0
6062 || bfd_bwrite (location, count, abfd) != count)
252b5132
RH		 6063 return false;
6064
6065 return true;
6066}
6067
6068void
6069_bfd_elf_no_info_to_howto (abfd, cache_ptr, dst)
7442e600
ILT		 6070 bfd *abfd ATTRIBUTE_UNUSED;
6071 arelent *cache_ptr ATTRIBUTE_UNUSED;
6072 Elf_Internal_Rela *dst ATTRIBUTE_UNUSED;
252b5132
RH		 6073{
6074 abort ();
6075}
6076
6077#if 0
6078void
6079_bfd_elf_no_info_to_howto_rel (abfd, cache_ptr, dst)
6080 bfd *abfd;
6081 arelent *cache_ptr;
6082 Elf_Internal_Rel *dst;
6083{
6084 abort ();
6085}
6086#endif
6087
6088/* Try to convert a non-ELF reloc into an ELF one. */
6089
6090boolean
6091_bfd_elf_validate_reloc (abfd, areloc)
6092 bfd *abfd;
6093 arelent *areloc;
6094{
c044fabd 6095 /* Check whether we really have an ELF howto. */
252b5132
RH		 6096
6097 if ((*areloc->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec)
6098 {
6099 bfd_reloc_code_real_type code;
6100 reloc_howto_type *howto;
6101
6102 /* Alien reloc: Try to determine its type to replace it with an
c044fabd 6103 equivalent ELF reloc. */
252b5132
RH		 6104
6105 if (areloc->howto->pc_relative)
6106 {
6107 switch (areloc->howto->bitsize)
6108 {
6109 case 8:
6110 code = BFD_RELOC_8_PCREL;
6111 break;
6112 case 12:
6113 code = BFD_RELOC_12_PCREL;
6114 break;
6115 case 16:
6116 code = BFD_RELOC_16_PCREL;
6117 break;
6118 case 24:
6119 code = BFD_RELOC_24_PCREL;
6120 break;
6121 case 32:
6122 code = BFD_RELOC_32_PCREL;
6123 break;
6124 case 64:
6125 code = BFD_RELOC_64_PCREL;
6126 break;
6127 default:
6128 goto fail;
6129 }
6130
6131 howto = bfd_reloc_type_lookup (abfd, code);
6132
6133 if (areloc->howto->pcrel_offset != howto->pcrel_offset)
6134 {
6135 if (howto->pcrel_offset)
6136 areloc->addend += areloc->address;
6137 else
6138 areloc->addend -= areloc->address; /* addend is unsigned!! */
6139 }
6140 }
6141 else
6142 {
6143 switch (areloc->howto->bitsize)
6144 {
6145 case 8:
6146 code = BFD_RELOC_8;
6147 break;
6148 case 14:
6149 code = BFD_RELOC_14;
6150 break;
6151 case 16:
6152 code = BFD_RELOC_16;
6153 break;
6154 case 26:
6155 code = BFD_RELOC_26;
6156 break;
6157 case 32:
6158 code = BFD_RELOC_32;
6159 break;
6160 case 64:
6161 code = BFD_RELOC_64;
6162 break;
6163 default:
6164 goto fail;
6165 }
6166
6167 howto = bfd_reloc_type_lookup (abfd, code);
6168 }
6169
6170 if (howto)
6171 areloc->howto = howto;
6172 else
6173 goto fail;
6174 }
6175
6176 return true;
6177
6178 fail:
6179 (*_bfd_error_handler)
6180 (_("%s: unsupported relocation type %s"),
8f615d07 6181 bfd_archive_filename (abfd), areloc->howto->name);
252b5132
RH		 6182 bfd_set_error (bfd_error_bad_value);
6183 return false;
6184}
6185
6186boolean
6187_bfd_elf_close_and_cleanup (abfd)
6188 bfd *abfd;
6189{
6190 if (bfd_get_format (abfd) == bfd_object)
6191 {
6192 if (elf_shstrtab (abfd) != NULL)
2b0f7ef9 6193 _bfd_elf_strtab_free (elf_shstrtab (abfd));
252b5132
RH		 6194 }
6195
6196 return _bfd_generic_close_and_cleanup (abfd);
6197}
6198
6199/* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY
6200 in the relocation's offset. Thus we cannot allow any sort of sanity
6201 range-checking to interfere. There is nothing else to do in processing
6202 this reloc. */
6203
6204bfd_reloc_status_type
6205_bfd_elf_rel_vtable_reloc_fn (abfd, re, symbol, data, is, obfd, errmsg)
7442e600
ILT		 6206 bfd *abfd ATTRIBUTE_UNUSED;
6207 arelent *re ATTRIBUTE_UNUSED;
6208 struct symbol_cache_entry *symbol ATTRIBUTE_UNUSED;
6209 PTR data ATTRIBUTE_UNUSED;
6210 asection *is ATTRIBUTE_UNUSED;
6211 bfd *obfd ATTRIBUTE_UNUSED;
6212 char **errmsg ATTRIBUTE_UNUSED;
252b5132
RH		 6213{
6214 return bfd_reloc_ok;
6215}
252b5132
RH		 6216\f
6217/* Elf core file support. Much of this only works on native
6218 toolchains, since we rely on knowing the
6219 machine-dependent procfs structure in order to pick
c044fabd 6220 out details about the corefile. */
252b5132
RH		 6221
6222#ifdef HAVE_SYS_PROCFS_H
6223# include <sys/procfs.h>
6224#endif
6225
c044fabd 6226/* FIXME: this is kinda wrong, but it's what gdb wants. */
252b5132
RH		 6227
6228static int
6229elfcore_make_pid (abfd)
c044fabd 6230 bfd *abfd;
252b5132
RH		 6231{
6232 return ((elf_tdata (abfd)->core_lwpid << 16)
6233 + (elf_tdata (abfd)->core_pid));
6234}
6235
252b5132
RH		 6236/* If there isn't a section called NAME, make one, using
6237 data from SECT. Note, this function will generate a
6238 reference to NAME, so you shouldn't deallocate or
c044fabd 6239 overwrite it. */
252b5132
RH		 6240
6241static boolean
6242elfcore_maybe_make_sect (abfd, name, sect)
c044fabd
KH		 6243 bfd *abfd;
6244 char *name;
6245 asection *sect;
252b5132 6246{
c044fabd 6247 asection *sect2;
252b5132
RH		 6248
6249 if (bfd_get_section_by_name (abfd, name) != NULL)
6250 return true;
6251
6252 sect2 = bfd_make_section (abfd, name);
6253 if (sect2 == NULL)
6254 return false;
6255
6256 sect2->_raw_size = sect->_raw_size;
6257 sect2->filepos = sect->filepos;
6258 sect2->flags = sect->flags;
6259 sect2->alignment_power = sect->alignment_power;
6260 return true;
6261}
6262
bb0082d6
AM		 6263/* Create a pseudosection containing SIZE bytes at FILEPOS. This
6264 actually creates up to two pseudosections:
6265 - For the single-threaded case, a section named NAME, unless
6266 such a section already exists.
6267 - For the multi-threaded case, a section named "NAME/PID", where
6268 PID is elfcore_make_pid (abfd).
6269 Both pseudosections have identical contents. */
6270boolean
6271_bfd_elfcore_make_pseudosection (abfd, name, size, filepos)
6272 bfd *abfd;
6273 char *name;
dc810e39
AM		 6274 size_t size;
6275 ufile_ptr filepos;
bb0082d6
AM		 6276{
6277 char buf[100];
6278 char *threaded_name;
d4c88bbb 6279 size_t len;
bb0082d6
AM		 6280 asection *sect;
6281
6282 /* Build the section name. */
6283
6284 sprintf (buf, "%s/%d", name, elfcore_make_pid (abfd));
d4c88bbb
AM		 6285 len = strlen (buf) + 1;
6286 threaded_name = bfd_alloc (abfd, (bfd_size_type) len);
bb0082d6
AM		 6287 if (threaded_name == NULL)
6288 return false;
d4c88bbb 6289 memcpy (threaded_name, buf, len);
bb0082d6
AM		 6290
6291 sect = bfd_make_section (abfd, threaded_name);
6292 if (sect == NULL)
6293 return false;
6294 sect->_raw_size = size;
6295 sect->filepos = filepos;
6296 sect->flags = SEC_HAS_CONTENTS;
6297 sect->alignment_power = 2;
6298
936e320b 6299 return elfcore_maybe_make_sect (abfd, name, sect);
bb0082d6
AM		 6300}
6301
252b5132 6302/* prstatus_t exists on:
4a938328 6303 solaris 2.5+
252b5132
RH		 6304 linux 2.[01] + glibc
6305 unixware 4.2
6306*/
6307
6308#if defined (HAVE_PRSTATUS_T)
a7b97311
AM		 6309static boolean elfcore_grok_prstatus PARAMS ((bfd *, Elf_Internal_Note *));
6310
252b5132
RH		 6311static boolean
6312elfcore_grok_prstatus (abfd, note)
c044fabd
KH		 6313 bfd *abfd;
6314 Elf_Internal_Note *note;
252b5132 6315{
dc810e39 6316 size_t raw_size;
7ee38065 6317 int offset;
252b5132 6318
4a938328
MS		 6319 if (note->descsz == sizeof (prstatus_t))
6320 {
6321 prstatus_t prstat;
252b5132 6322
e0ebfc61 6323 raw_size = sizeof (prstat.pr_reg);
7ee38065 6324 offset = offsetof (prstatus_t, pr_reg);
4a938328 6325 memcpy (&prstat, note->descdata, sizeof (prstat));
252b5132 6326
fa49d224
NC		 6327 /* Do not overwrite the core signal if it
6328 has already been set by another thread. */
6329 if (elf_tdata (abfd)->core_signal == 0)
6330 elf_tdata (abfd)->core_signal = prstat.pr_cursig;
4a938328 6331 elf_tdata (abfd)->core_pid = prstat.pr_pid;
252b5132 6332
4a938328
MS		 6333 /* pr_who exists on:
6334 solaris 2.5+
6335 unixware 4.2
6336 pr_who doesn't exist on:
6337 linux 2.[01]
6338 */
252b5132 6339#if defined (HAVE_PRSTATUS_T_PR_WHO)
4a938328 6340 elf_tdata (abfd)->core_lwpid = prstat.pr_who;
252b5132 6341#endif
4a938328 6342 }
7ee38065 6343#if defined (HAVE_PRSTATUS32_T)
4a938328
MS		 6344 else if (note->descsz == sizeof (prstatus32_t))
6345 {
6346 /* 64-bit host, 32-bit corefile */
6347 prstatus32_t prstat;
6348
e0ebfc61 6349 raw_size = sizeof (prstat.pr_reg);
7ee38065 6350 offset = offsetof (prstatus32_t, pr_reg);
4a938328
MS		 6351 memcpy (&prstat, note->descdata, sizeof (prstat));
6352
fa49d224
NC		 6353 /* Do not overwrite the core signal if it
6354 has already been set by another thread. */
6355 if (elf_tdata (abfd)->core_signal == 0)
6356 elf_tdata (abfd)->core_signal = prstat.pr_cursig;
4a938328
MS		 6357 elf_tdata (abfd)->core_pid = prstat.pr_pid;
6358
6359 /* pr_who exists on:
6360 solaris 2.5+
6361 unixware 4.2
6362 pr_who doesn't exist on:
6363 linux 2.[01]
6364 */
7ee38065 6365#if defined (HAVE_PRSTATUS32_T_PR_WHO)
4a938328
MS		 6366 elf_tdata (abfd)->core_lwpid = prstat.pr_who;
6367#endif
6368 }
7ee38065 6369#endif /* HAVE_PRSTATUS32_T */
4a938328
MS		 6370 else
6371 {
6372 /* Fail - we don't know how to handle any other
6373 note size (ie. data object type). */
6374 return true;
6375 }
252b5132 6376
bb0082d6 6377 /* Make a ".reg/999" section and a ".reg" section. */
936e320b
AM		 6378 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
6379 raw_size, note->descpos + offset);
252b5132
RH		 6380}
6381#endif /* defined (HAVE_PRSTATUS_T) */
6382
bb0082d6 6383/* Create a pseudosection containing the exact contents of NOTE. */
252b5132 6384static boolean
ff08c6bb 6385elfcore_make_note_pseudosection (abfd, name, note)
c044fabd 6386 bfd *abfd;
ff08c6bb 6387 char *name;
c044fabd 6388 Elf_Internal_Note *note;
252b5132 6389{
936e320b
AM		 6390 return _bfd_elfcore_make_pseudosection (abfd, name,
6391 note->descsz, note->descpos);
252b5132
RH		 6392}
6393
ff08c6bb
JB		 6394/* There isn't a consistent prfpregset_t across platforms,
6395 but it doesn't matter, because we don't have to pick this
c044fabd
KH		 6396 data structure apart. */
6397
ff08c6bb
JB		 6398static boolean
6399elfcore_grok_prfpreg (abfd, note)
c044fabd
KH		 6400 bfd *abfd;
6401 Elf_Internal_Note *note;
ff08c6bb
JB		 6402{
6403 return elfcore_make_note_pseudosection (abfd, ".reg2", note);
6404}
6405
ff08c6bb
JB		 6406/* Linux dumps the Intel SSE regs in a note named "LINUX" with a note
6407 type of 5 (NT_PRXFPREG). Just include the whole note's contents
6408 literally. */
c044fabd 6409
ff08c6bb
JB		 6410static boolean
6411elfcore_grok_prxfpreg (abfd, note)
c044fabd
KH		 6412 bfd *abfd;
6413 Elf_Internal_Note *note;
ff08c6bb
JB		 6414{
6415 return elfcore_make_note_pseudosection (abfd, ".reg-xfp", note);
6416}
6417
252b5132 6418#if defined (HAVE_PRPSINFO_T)
4a938328 6419typedef prpsinfo_t elfcore_psinfo_t;
7ee38065 6420#if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */
4a938328
MS		 6421typedef prpsinfo32_t elfcore_psinfo32_t;
6422#endif
252b5132
RH		 6423#endif
6424
6425#if defined (HAVE_PSINFO_T)
4a938328 6426typedef psinfo_t elfcore_psinfo_t;
7ee38065 6427#if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */
4a938328
MS		 6428typedef psinfo32_t elfcore_psinfo32_t;
6429#endif
252b5132
RH		 6430#endif
6431
252b5132
RH		 6432/* return a malloc'ed copy of a string at START which is at
6433 most MAX bytes long, possibly without a terminating '\0'.
c044fabd 6434 the copy will always have a terminating '\0'. */
252b5132 6435
936e320b 6436char *
bb0082d6 6437_bfd_elfcore_strndup (abfd, start, max)
c044fabd
KH		 6438 bfd *abfd;
6439 char *start;
dc810e39 6440 size_t max;
252b5132 6441{
dc810e39 6442 char *dups;
c044fabd 6443 char *end = memchr (start, '\0', max);
dc810e39 6444 size_t len;
252b5132
RH		 6445
6446 if (end == NULL)
6447 len = max;
6448 else
6449 len = end - start;
6450
dc810e39
AM		 6451 dups = bfd_alloc (abfd, (bfd_size_type) len + 1);
6452 if (dups == NULL)
252b5132
RH		 6453 return NULL;
6454
dc810e39
AM		 6455 memcpy (dups, start, len);
6456 dups[len] = '\0';
252b5132 6457
dc810e39 6458 return dups;
252b5132
RH		 6459}
6460
bb0082d6 6461#if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
a7b97311 6462static boolean elfcore_grok_psinfo PARAMS ((bfd *, Elf_Internal_Note *));
bb0082d6 6463
252b5132
RH		 6464static boolean
6465elfcore_grok_psinfo (abfd, note)
c044fabd
KH		 6466 bfd *abfd;
6467 Elf_Internal_Note *note;
252b5132 6468{
4a938328
MS		 6469 if (note->descsz == sizeof (elfcore_psinfo_t))
6470 {
6471 elfcore_psinfo_t psinfo;
252b5132 6472
7ee38065 6473 memcpy (&psinfo, note->descdata, sizeof (psinfo));
252b5132 6474
4a938328 6475 elf_tdata (abfd)->core_program
936e320b
AM		 6476 = _bfd_elfcore_strndup (abfd, psinfo.pr_fname,
6477 sizeof (psinfo.pr_fname));
252b5132 6478
4a938328 6479 elf_tdata (abfd)->core_command
936e320b
AM		 6480 = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs,
6481 sizeof (psinfo.pr_psargs));
4a938328 6482 }
7ee38065 6483#if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T)
4a938328
MS		 6484 else if (note->descsz == sizeof (elfcore_psinfo32_t))
6485 {
6486 /* 64-bit host, 32-bit corefile */
6487 elfcore_psinfo32_t psinfo;
6488
7ee38065 6489 memcpy (&psinfo, note->descdata, sizeof (psinfo));
252b5132 6490
4a938328 6491 elf_tdata (abfd)->core_program
936e320b
AM		 6492 = _bfd_elfcore_strndup (abfd, psinfo.pr_fname,
6493 sizeof (psinfo.pr_fname));
4a938328
MS		 6494
6495 elf_tdata (abfd)->core_command
936e320b
AM		 6496 = _bfd_elfcore_strndup (abfd, psinfo.pr_psargs,
6497 sizeof (psinfo.pr_psargs));
4a938328
MS		 6498 }
6499#endif
6500
6501 else
6502 {
6503 /* Fail - we don't know how to handle any other
6504 note size (ie. data object type). */
6505 return true;
6506 }
252b5132
RH		 6507
6508 /* Note that for some reason, a spurious space is tacked
6509 onto the end of the args in some (at least one anyway)
c044fabd 6510 implementations, so strip it off if it exists. */
252b5132
RH		 6511
6512 {
c044fabd 6513 char *command = elf_tdata (abfd)->core_command;
252b5132
RH		 6514 int n = strlen (command);
6515
6516 if (0 < n && command[n - 1] == ' ')
6517 command[n - 1] = '\0';
6518 }
6519
6520 return true;
6521}
6522#endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */
6523
252b5132 6524#if defined (HAVE_PSTATUS_T)
51316059
MS		 6525static boolean elfcore_grok_pstatus PARAMS ((bfd *, Elf_Internal_Note *));
6526
252b5132
RH		 6527static boolean
6528elfcore_grok_pstatus (abfd, note)
c044fabd
KH		 6529 bfd *abfd;
6530 Elf_Internal_Note *note;
252b5132 6531{
f572a39d
AM		 6532 if (note->descsz == sizeof (pstatus_t)
6533#if defined (HAVE_PXSTATUS_T)
6534 || note->descsz == sizeof (pxstatus_t)
6535#endif
6536 )
4a938328
MS		 6537 {
6538 pstatus_t pstat;
252b5132 6539
4a938328 6540 memcpy (&pstat, note->descdata, sizeof (pstat));
252b5132 6541
4a938328
MS		 6542 elf_tdata (abfd)->core_pid = pstat.pr_pid;
6543 }
7ee38065 6544#if defined (HAVE_PSTATUS32_T)
4a938328
MS		 6545 else if (note->descsz == sizeof (pstatus32_t))
6546 {
6547 /* 64-bit host, 32-bit corefile */
6548 pstatus32_t pstat;
252b5132 6549
4a938328 6550 memcpy (&pstat, note->descdata, sizeof (pstat));
252b5132 6551
4a938328
MS		 6552 elf_tdata (abfd)->core_pid = pstat.pr_pid;
6553 }
6554#endif
252b5132
RH		 6555 /* Could grab some more details from the "representative"
6556 lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an
c044fabd 6557 NT_LWPSTATUS note, presumably. */
252b5132
RH		 6558
6559 return true;
6560}
6561#endif /* defined (HAVE_PSTATUS_T) */
6562
252b5132 6563#if defined (HAVE_LWPSTATUS_T)
51316059
MS		 6564static boolean elfcore_grok_lwpstatus PARAMS ((bfd *, Elf_Internal_Note *));
6565
252b5132
RH		 6566static boolean
6567elfcore_grok_lwpstatus (abfd, note)
c044fabd
KH		 6568 bfd *abfd;
6569 Elf_Internal_Note *note;
252b5132
RH		 6570{
6571 lwpstatus_t lwpstat;
6572 char buf[100];
c044fabd 6573 char *name;
d4c88bbb 6574 size_t len;
c044fabd 6575 asection *sect;
252b5132 6576
f572a39d
AM		 6577 if (note->descsz != sizeof (lwpstat)
6578#if defined (HAVE_LWPXSTATUS_T)
6579 && note->descsz != sizeof (lwpxstatus_t)
6580#endif
6581 )
252b5132
RH		 6582 return true;
6583
6584 memcpy (&lwpstat, note->descdata, sizeof (lwpstat));
6585
6586 elf_tdata (abfd)->core_lwpid = lwpstat.pr_lwpid;
6587 elf_tdata (abfd)->core_signal = lwpstat.pr_cursig;
6588
c044fabd 6589 /* Make a ".reg/999" section. */
252b5132
RH		 6590
6591 sprintf (buf, ".reg/%d", elfcore_make_pid (abfd));
d4c88bbb
AM		 6592 len = strlen (buf) + 1;
6593 name = bfd_alloc (abfd, (bfd_size_type) len);
252b5132
RH		 6594 if (name == NULL)
6595 return false;
d4c88bbb 6596 memcpy (name, buf, len);
252b5132
RH		 6597
6598 sect = bfd_make_section (abfd, name);
6599 if (sect == NULL)
6600 return false;
6601
6602#if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
6603 sect->_raw_size = sizeof (lwpstat.pr_context.uc_mcontext.gregs);
6604 sect->filepos = note->descpos
6605 + offsetof (lwpstatus_t, pr_context.uc_mcontext.gregs);
6606#endif
6607
6608#if defined (HAVE_LWPSTATUS_T_PR_REG)
6609 sect->_raw_size = sizeof (lwpstat.pr_reg);
6610 sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_reg);
6611#endif
6612
6613 sect->flags = SEC_HAS_CONTENTS;
6614 sect->alignment_power = 2;
6615
6616 if (!elfcore_maybe_make_sect (abfd, ".reg", sect))
6617 return false;
6618
6619 /* Make a ".reg2/999" section */
6620
6621 sprintf (buf, ".reg2/%d", elfcore_make_pid (abfd));
d4c88bbb
AM		 6622 len = strlen (buf) + 1;
6623 name = bfd_alloc (abfd, (bfd_size_type) len);
252b5132
RH		 6624 if (name == NULL)
6625 return false;
d4c88bbb 6626 memcpy (name, buf, len);
252b5132
RH		 6627
6628 sect = bfd_make_section (abfd, name);
6629 if (sect == NULL)
6630 return false;
6631
6632#if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
6633 sect->_raw_size = sizeof (lwpstat.pr_context.uc_mcontext.fpregs);
6634 sect->filepos = note->descpos
6635 + offsetof (lwpstatus_t, pr_context.uc_mcontext.fpregs);
6636#endif
6637
6638#if defined (HAVE_LWPSTATUS_T_PR_FPREG)
6639 sect->_raw_size = sizeof (lwpstat.pr_fpreg);
6640 sect->filepos = note->descpos + offsetof (lwpstatus_t, pr_fpreg);
6641#endif
6642
6643 sect->flags = SEC_HAS_CONTENTS;
6644 sect->alignment_power = 2;
6645
936e320b 6646 return elfcore_maybe_make_sect (abfd, ".reg2", sect);
252b5132
RH		 6647}
6648#endif /* defined (HAVE_LWPSTATUS_T) */
6649
16e9c715
NC		 6650#if defined (HAVE_WIN32_PSTATUS_T)
6651static boolean
6652elfcore_grok_win32pstatus (abfd, note)
c044fabd
KH		 6653 bfd *abfd;
6654 Elf_Internal_Note *note;
16e9c715
NC		 6655{
6656 char buf[30];
c044fabd 6657 char *name;
d4c88bbb 6658 size_t len;
c044fabd 6659 asection *sect;
16e9c715
NC		 6660 win32_pstatus_t pstatus;
6661
6662 if (note->descsz < sizeof (pstatus))
6663 return true;
6664
e8eab623 6665 memcpy (&pstatus, note->descdata, sizeof (pstatus));
c044fabd
KH		 6666
6667 switch (pstatus.data_type)
16e9c715
NC		 6668 {
6669 case NOTE_INFO_PROCESS:
6670 /* FIXME: need to add ->core_command. */
6671 elf_tdata (abfd)->core_signal = pstatus.data.process_info.signal;
6672 elf_tdata (abfd)->core_pid = pstatus.data.process_info.pid;
c044fabd 6673 break;
16e9c715
NC		 6674
6675 case NOTE_INFO_THREAD:
6676 /* Make a ".reg/999" section. */
6677 sprintf (buf, ".reg/%d", pstatus.data.thread_info.tid);
c044fabd 6678
d4c88bbb
AM		 6679 len = strlen (buf) + 1;
6680 name = bfd_alloc (abfd, (bfd_size_type) len);
16e9c715 6681 if (name == NULL)
c044fabd
KH		 6682 return false;
6683
d4c88bbb 6684 memcpy (name, buf, len);
16e9c715
NC		 6685
6686 sect = bfd_make_section (abfd, name);
6687 if (sect == NULL)
c044fabd
KH		 6688 return false;
6689
16e9c715 6690 sect->_raw_size = sizeof (pstatus.data.thread_info.thread_context);
079e9a2f
AM		 6691 sect->filepos = (note->descpos
6692 + offsetof (struct win32_pstatus,
6693 data.thread_info.thread_context));
16e9c715
NC		 6694 sect->flags = SEC_HAS_CONTENTS;
6695 sect->alignment_power = 2;
6696
6697 if (pstatus.data.thread_info.is_active_thread)
6698 if (! elfcore_maybe_make_sect (abfd, ".reg", sect))
6699 return false;
6700 break;
6701
6702 case NOTE_INFO_MODULE:
6703 /* Make a ".module/xxxxxxxx" section. */
c044fabd
KH		 6704 sprintf (buf, ".module/%08x", pstatus.data.module_info.base_address);
6705
d4c88bbb
AM		 6706 len = strlen (buf) + 1;
6707 name = bfd_alloc (abfd, (bfd_size_type) len);
16e9c715
NC		 6708 if (name == NULL)
6709 return false;
c044fabd 6710
d4c88bbb 6711 memcpy (name, buf, len);
252b5132 6712
16e9c715 6713 sect = bfd_make_section (abfd, name);
c044fabd 6714
16e9c715
NC		 6715 if (sect == NULL)
6716 return false;
c044fabd 6717
16e9c715
NC		 6718 sect->_raw_size = note->descsz;
6719 sect->filepos = note->descpos;
6720 sect->flags = SEC_HAS_CONTENTS;
6721 sect->alignment_power = 2;
6722 break;
6723
6724 default:
6725 return true;
6726 }
6727
6728 return true;
6729}
6730#endif /* HAVE_WIN32_PSTATUS_T */
252b5132
RH		 6731
6732static boolean
6733elfcore_grok_note (abfd, note)
c044fabd
KH		 6734 bfd *abfd;
6735 Elf_Internal_Note *note;
252b5132 6736{
bb0082d6
AM		 6737 struct elf_backend_data *bed = get_elf_backend_data (abfd);
6738
252b5132
RH		 6739 switch (note->type)
6740 {
6741 default:
6742 return true;
6743
252b5132 6744 case NT_PRSTATUS:
bb0082d6
AM		 6745 if (bed->elf_backend_grok_prstatus)
6746 if ((*bed->elf_backend_grok_prstatus) (abfd, note))
6747 return true;
6748#if defined (HAVE_PRSTATUS_T)
252b5132 6749 return elfcore_grok_prstatus (abfd, note);
bb0082d6
AM		 6750#else
6751 return true;
252b5132
RH		 6752#endif
6753
6754#if defined (HAVE_PSTATUS_T)
6755 case NT_PSTATUS:
6756 return elfcore_grok_pstatus (abfd, note);
6757#endif
6758
6759#if defined (HAVE_LWPSTATUS_T)
6760 case NT_LWPSTATUS:
6761 return elfcore_grok_lwpstatus (abfd, note);
6762#endif
6763
6764 case NT_FPREGSET: /* FIXME: rename to NT_PRFPREG */
6765 return elfcore_grok_prfpreg (abfd, note);
6766
16e9c715 6767#if defined (HAVE_WIN32_PSTATUS_T)
c044fabd 6768 case NT_WIN32PSTATUS:
16e9c715
NC		 6769 return elfcore_grok_win32pstatus (abfd, note);
6770#endif
6771
c044fabd 6772 case NT_PRXFPREG: /* Linux SSE extension */
e377ab71
MK		 6773 if (note->namesz == 6
6774 && strcmp (note->namedata, "LINUX") == 0)
ff08c6bb
JB		 6775 return elfcore_grok_prxfpreg (abfd, note);
6776 else
6777 return true;
6778
252b5132
RH		 6779 case NT_PRPSINFO:
6780 case NT_PSINFO:
bb0082d6
AM		 6781 if (bed->elf_backend_grok_psinfo)
6782 if ((*bed->elf_backend_grok_psinfo) (abfd, note))
6783 return true;
6784#if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
252b5132 6785 return elfcore_grok_psinfo (abfd, note);
bb0082d6
AM		 6786#else
6787 return true;
252b5132
RH		 6788#endif
6789 }
6790}
6791
50b2bdb7
AM		 6792static boolean
6793elfcore_netbsd_get_lwpid (note, lwpidp)
6794 Elf_Internal_Note *note;
6795 int *lwpidp;
6796{
6797 char *cp;
6798
6799 cp = strchr (note->namedata, '@');
6800 if (cp != NULL)
6801 {
d2b64500 6802 *lwpidp = atoi(cp + 1);
50b2bdb7
AM		 6803 return true;
6804 }
6805 return false;
6806}
6807
6808static boolean
6809elfcore_grok_netbsd_procinfo (abfd, note)
6810 bfd *abfd;
6811 Elf_Internal_Note *note;
6812{
6813
6814 /* Signal number at offset 0x08. */
6815 elf_tdata (abfd)->core_signal
6816 = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x08);
6817
6818 /* Process ID at offset 0x50. */
6819 elf_tdata (abfd)->core_pid
6820 = bfd_h_get_32 (abfd, (bfd_byte *) note->descdata + 0x50);
6821
6822 /* Command name at 0x7c (max 32 bytes, including nul). */
6823 elf_tdata (abfd)->core_command
6824 = _bfd_elfcore_strndup (abfd, note->descdata + 0x7c, 31);
6825
6826 return true;
6827}
6828
6829static boolean
6830elfcore_grok_netbsd_note (abfd, note)
6831 bfd *abfd;
6832 Elf_Internal_Note *note;
6833{
6834 int lwp;
6835
6836 if (elfcore_netbsd_get_lwpid (note, &lwp))
6837 elf_tdata (abfd)->core_lwpid = lwp;
6838
b4db1224 6839 if (note->type == NT_NETBSDCORE_PROCINFO)
50b2bdb7
AM		 6840 {
6841 /* NetBSD-specific core "procinfo". Note that we expect to
6842 find this note before any of the others, which is fine,
6843 since the kernel writes this note out first when it
6844 creates a core file. */
47d9a591 6845
50b2bdb7
AM		 6846 return elfcore_grok_netbsd_procinfo (abfd, note);
6847 }
6848
b4db1224
JT		 6849 /* As of Jan 2002 there are no other machine-independent notes
6850 defined for NetBSD core files. If the note type is less
6851 than the start of the machine-dependent note types, we don't
6852 understand it. */
47d9a591 6853
b4db1224 6854 if (note->type < NT_NETBSDCORE_FIRSTMACH)
50b2bdb7
AM		 6855 return true;
6856
6857
6858 switch (bfd_get_arch (abfd))
6859 {
6860 /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and
6861 PT_GETFPREGS == mach+2. */
6862
6863 case bfd_arch_alpha:
6864 case bfd_arch_sparc:
6865 switch (note->type)
6866 {
b4db1224 6867 case NT_NETBSDCORE_FIRSTMACH+0:
50b2bdb7
AM		 6868 return elfcore_make_note_pseudosection (abfd, ".reg", note);
6869
b4db1224 6870 case NT_NETBSDCORE_FIRSTMACH+2:
50b2bdb7
AM		 6871 return elfcore_make_note_pseudosection (abfd, ".reg2", note);
6872
6873 default:
6874 return true;
6875 }
6876
6877 /* On all other arch's, PT_GETREGS == mach+1 and
6878 PT_GETFPREGS == mach+3. */
6879
6880 default:
6881 switch (note->type)
6882 {
b4db1224 6883 case NT_NETBSDCORE_FIRSTMACH+1:
50b2bdb7
AM		 6884 return elfcore_make_note_pseudosection (abfd, ".reg", note);
6885
b4db1224 6886 case NT_NETBSDCORE_FIRSTMACH+3:
50b2bdb7
AM		 6887 return elfcore_make_note_pseudosection (abfd, ".reg2", note);
6888
6889 default:
6890 return true;
6891 }
6892 }
6893 /* NOTREACHED */
6894}
6895
7c76fa91
MS		 6896/* Function: elfcore_write_note
6897
47d9a591 6898 Inputs:
7c76fa91
MS		 6899 buffer to hold note
6900 name of note
6901 type of note
6902 data for note
6903 size of data for note
6904
6905 Return:
6906 End of buffer containing note. */
6907
6908char *
6909elfcore_write_note (abfd, buf, bufsiz, name, type, input, size)
6910 bfd *abfd;
6911 char *buf;
6912 int *bufsiz;
d4c88bbb 6913 const char *name;
7c76fa91 6914 int type;
d4c88bbb 6915 const PTR input;
7c76fa91
MS		 6916 int size;
6917{
6918 Elf_External_Note *xnp;
d4c88bbb
AM		 6919 size_t namesz;
6920 size_t pad;
6921 size_t newspace;
7c76fa91
MS		 6922 char *p, *dest;
6923
d4c88bbb
AM		 6924 namesz = 0;
6925 pad = 0;
6926 if (name != NULL)
6927 {
6928 struct elf_backend_data *bed;
6929
6930 namesz = strlen (name) + 1;
6931 bed = get_elf_backend_data (abfd);
6932 pad = -namesz & (bed->s->file_align - 1);
6933 }
6934
6935 newspace = sizeof (Elf_External_Note) - 1 + namesz + pad + size;
6936
7c76fa91
MS		 6937 p = realloc (buf, *bufsiz + newspace);
6938 dest = p + *bufsiz;
6939 *bufsiz += newspace;
6940 xnp = (Elf_External_Note *) dest;
6941 H_PUT_32 (abfd, namesz, xnp->namesz);
6942 H_PUT_32 (abfd, size, xnp->descsz);
6943 H_PUT_32 (abfd, type, xnp->type);
d4c88bbb
AM		 6944 dest = xnp->name;
6945 if (name != NULL)
6946 {
6947 memcpy (dest, name, namesz);
6948 dest += namesz;
6949 while (pad != 0)
6950 {
6951 *dest++ = '\0';
6952 --pad;
6953 }
6954 }
6955 memcpy (dest, input, size);
7c76fa91
MS		 6956 return p;
6957}
6958
6959#if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
6960char *
6961elfcore_write_prpsinfo (abfd, buf, bufsiz, fname, psargs)
6962 bfd *abfd;
6963 char *buf;
6964 int *bufsiz;
47d9a591 6965 const char *fname;
d4c88bbb 6966 const char *psargs;
7c76fa91
MS		 6967{
6968 int note_type;
6969 char *note_name = "CORE";
6970
6971#if defined (HAVE_PSINFO_T)
6972 psinfo_t data;
6973 note_type = NT_PSINFO;
6974#else
6975 prpsinfo_t data;
6976 note_type = NT_PRPSINFO;
6977#endif
6978
6979 memset (&data, 0, sizeof (data));
6980 strncpy (data.pr_fname, fname, sizeof (data.pr_fname));
6981 strncpy (data.pr_psargs, psargs, sizeof (data.pr_psargs));
47d9a591 6982 return elfcore_write_note (abfd, buf, bufsiz,
7c76fa91
MS		 6983 note_name, note_type, &data, sizeof (data));
6984}
6985#endif /* PSINFO_T or PRPSINFO_T */
6986
6987#if defined (HAVE_PRSTATUS_T)
6988char *
6989elfcore_write_prstatus (abfd, buf, bufsiz, pid, cursig, gregs)
6990 bfd *abfd;
6991 char *buf;
6992 int *bufsiz;
b87011e9 6993 long pid;
7c76fa91 6994 int cursig;
d4c88bbb 6995 const PTR gregs;
7c76fa91
MS		 6996{
6997 prstatus_t prstat;
6998 char *note_name = "CORE";
6999
7000 memset (&prstat, 0, sizeof (prstat));
7001 prstat.pr_pid = pid;
7002 prstat.pr_cursig = cursig;
c106e334 7003 memcpy (&prstat.pr_reg, gregs, sizeof (prstat.pr_reg));
47d9a591 7004 return elfcore_write_note (abfd, buf, bufsiz,
7c76fa91
MS		 7005 note_name, NT_PRSTATUS, &prstat, sizeof (prstat));
7006}
7007#endif /* HAVE_PRSTATUS_T */
7008
51316059
MS		 7009#if defined (HAVE_LWPSTATUS_T)
7010char *
7011elfcore_write_lwpstatus (abfd, buf, bufsiz, pid, cursig, gregs)
7012 bfd *abfd;
7013 char *buf;
7014 int *bufsiz;
7015 long pid;
7016 int cursig;
d4c88bbb 7017 const PTR gregs;
51316059
MS		 7018{
7019 lwpstatus_t lwpstat;
7020 char *note_name = "CORE";
7021
7022 memset (&lwpstat, 0, sizeof (lwpstat));
7023 lwpstat.pr_lwpid = pid >> 16;
7024 lwpstat.pr_cursig = cursig;
7025#if defined (HAVE_LWPSTATUS_T_PR_REG)
7026 memcpy (lwpstat.pr_reg, gregs, sizeof (lwpstat.pr_reg));
7027#elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
7028#if !defined(gregs)
7029 memcpy (lwpstat.pr_context.uc_mcontext.gregs,
7030 gregs, sizeof (lwpstat.pr_context.uc_mcontext.gregs));
7031#else
7032 memcpy (lwpstat.pr_context.uc_mcontext.__gregs,
7033 gregs, sizeof (lwpstat.pr_context.uc_mcontext.__gregs));
7034#endif
7035#endif
47d9a591 7036 return elfcore_write_note (abfd, buf, bufsiz, note_name,
51316059
MS		 7037 NT_LWPSTATUS, &lwpstat, sizeof (lwpstat));
7038}
7039#endif /* HAVE_LWPSTATUS_T */
7040
7c76fa91
MS		 7041#if defined (HAVE_PSTATUS_T)
7042char *
7043elfcore_write_pstatus (abfd, buf, bufsiz, pid, cursig, gregs)
7044 bfd *abfd;
7045 char *buf;
7046 int *bufsiz;
b87011e9 7047 long pid;
7c76fa91 7048 int cursig;
d4c88bbb 7049 const PTR gregs;
7c76fa91
MS		 7050{
7051 pstatus_t pstat;
7052 char *note_name = "CORE";
7053
51316059
MS		 7054 memset (&pstat, 0, sizeof (pstat));
7055 pstat.pr_pid = pid & 0xffff;
47d9a591 7056 buf = elfcore_write_note (abfd, buf, bufsiz, note_name,
51316059
MS		 7057 NT_PSTATUS, &pstat, sizeof (pstat));
7058 return buf;
7c76fa91
MS		 7059}
7060#endif /* HAVE_PSTATUS_T */
7061
7062char *
7063elfcore_write_prfpreg (abfd, buf, bufsiz, fpregs, size)
7064 bfd *abfd;
7065 char *buf;
7066 int *bufsiz;
d4c88bbb 7067 const PTR fpregs;
7c76fa91
MS		 7068 int size;
7069{
7070 char *note_name = "CORE";
47d9a591 7071 return elfcore_write_note (abfd, buf, bufsiz,
7c76fa91
MS		 7072 note_name, NT_FPREGSET, fpregs, size);
7073}
7074
7075char *
7076elfcore_write_prxfpreg (abfd, buf, bufsiz, xfpregs, size)
7077 bfd *abfd;
7078 char *buf;
7079 int *bufsiz;
d4c88bbb 7080 const PTR xfpregs;
7c76fa91
MS		 7081 int size;
7082{
7083 char *note_name = "LINUX";
47d9a591 7084 return elfcore_write_note (abfd, buf, bufsiz,
7c76fa91
MS		 7085 note_name, NT_PRXFPREG, xfpregs, size);
7086}
7087
252b5132
RH		 7088static boolean
7089elfcore_read_notes (abfd, offset, size)
c044fabd 7090 bfd *abfd;
dc810e39
AM		 7091 file_ptr offset;
7092 bfd_size_type size;
252b5132 7093{
c044fabd
KH		 7094 char *buf;
7095 char *p;
252b5132
RH		 7096
7097 if (size <= 0)
7098 return true;
7099
dc810e39 7100 if (bfd_seek (abfd, offset, SEEK_SET) != 0)
252b5132
RH		 7101 return false;
7102
dc810e39 7103 buf = bfd_malloc (size);
252b5132
RH		 7104 if (buf == NULL)
7105 return false;
7106
dc810e39 7107 if (bfd_bread (buf, size, abfd) != size)
252b5132
RH		 7108 {
7109 error:
7110 free (buf);
7111 return false;
7112 }
7113
7114 p = buf;
7115 while (p < buf + size)
7116 {
c044fabd
KH		 7117 /* FIXME: bad alignment assumption. */
7118 Elf_External_Note *xnp = (Elf_External_Note *) p;
252b5132
RH		 7119 Elf_Internal_Note in;
7120
dc810e39 7121 in.type = H_GET_32 (abfd, xnp->type);
252b5132 7122
dc810e39 7123 in.namesz = H_GET_32 (abfd, xnp->namesz);
252b5132
RH		 7124 in.namedata = xnp->name;
7125
dc810e39 7126 in.descsz = H_GET_32 (abfd, xnp->descsz);
252b5132
RH		 7127 in.descdata = in.namedata + BFD_ALIGN (in.namesz, 4);
7128 in.descpos = offset + (in.descdata - buf);
7129
50b2bdb7
AM		 7130 if (strncmp (in.namedata, "NetBSD-CORE", 11) == 0)
7131 {
7132 if (! elfcore_grok_netbsd_note (abfd, &in))
7133 goto error;
7134 }
7135 else
7136 {
7137 if (! elfcore_grok_note (abfd, &in))
7138 goto error;
7139 }
252b5132
RH		 7140
7141 p = in.descdata + BFD_ALIGN (in.descsz, 4);
7142 }
7143
7144 free (buf);
7145 return true;
7146}
98d8431c
JB		 7147\f
7148/* Providing external access to the ELF program header table. */
7149
7150/* Return an upper bound on the number of bytes required to store a
7151 copy of ABFD's program header table entries. Return -1 if an error
7152 occurs; bfd_get_error will return an appropriate code. */
c044fabd 7153
98d8431c
JB		 7154long
7155bfd_get_elf_phdr_upper_bound (abfd)
7156 bfd *abfd;
7157{
7158 if (abfd->xvec->flavour != bfd_target_elf_flavour)
7159 {
7160 bfd_set_error (bfd_error_wrong_format);
7161 return -1;
7162 }
7163
936e320b 7164 return elf_elfheader (abfd)->e_phnum * sizeof (Elf_Internal_Phdr);
98d8431c
JB		 7165}
7166
98d8431c
JB		 7167/* Copy ABFD's program header table entries to *PHDRS. The entries
7168 will be stored as an array of Elf_Internal_Phdr structures, as
7169 defined in include/elf/internal.h. To find out how large the
7170 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
7171
7172 Return the number of program header table entries read, or -1 if an
7173 error occurs; bfd_get_error will return an appropriate code. */
c044fabd 7174
98d8431c
JB		 7175int
7176bfd_get_elf_phdrs (abfd, phdrs)
7177 bfd *abfd;
7178 void *phdrs;
7179{
7180 int num_phdrs;
7181
7182 if (abfd->xvec->flavour != bfd_target_elf_flavour)
7183 {
7184 bfd_set_error (bfd_error_wrong_format);
7185 return -1;
7186 }
7187
7188 num_phdrs = elf_elfheader (abfd)->e_phnum;
c044fabd 7189 memcpy (phdrs, elf_tdata (abfd)->phdr,
98d8431c
JB		 7190 num_phdrs * sizeof (Elf_Internal_Phdr));
7191
7192 return num_phdrs;
7193}
ae4221d7
L		 7194
7195void
4e771d61 7196_bfd_elf_sprintf_vma (abfd, buf, value)
cc55aec9 7197 bfd *abfd ATTRIBUTE_UNUSED;
ae4221d7
L		 7198 char *buf;
7199 bfd_vma value;
7200{
d3b05f8d 7201#ifdef BFD64
ae4221d7
L		 7202 Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
7203
7204 i_ehdrp = elf_elfheader (abfd);
7205 if (i_ehdrp == NULL)
7206 sprintf_vma (buf, value);
7207 else
7208 {
7209 if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64)
cc55aec9 7210 {
ae4221d7 7211#if BFD_HOST_64BIT_LONG
cc55aec9 7212 sprintf (buf, "%016lx", value);
ae4221d7 7213#else
cc55aec9
AM		 7214 sprintf (buf, "%08lx%08lx", _bfd_int64_high (value),
7215 _bfd_int64_low (value));
ae4221d7 7216#endif
cc55aec9 7217 }
ae4221d7
L		 7218 else
7219 sprintf (buf, "%08lx", (unsigned long) (value & 0xffffffff));
7220 }
d3b05f8d
L		 7221#else
7222 sprintf_vma (buf, value);
7223#endif
ae4221d7
L		 7224}
7225
7226void
4e771d61 7227_bfd_elf_fprintf_vma (abfd, stream, value)
cc55aec9 7228 bfd *abfd ATTRIBUTE_UNUSED;
ae4221d7
L		 7229 PTR stream;
7230 bfd_vma value;
7231{
d3b05f8d 7232#ifdef BFD64
ae4221d7
L		 7233 Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */
7234
7235 i_ehdrp = elf_elfheader (abfd);
7236 if (i_ehdrp == NULL)
7237 fprintf_vma ((FILE *) stream, value);
7238 else
7239 {
7240 if (i_ehdrp->e_ident[EI_CLASS] == ELFCLASS64)
cc55aec9 7241 {
ae4221d7 7242#if BFD_HOST_64BIT_LONG
cc55aec9 7243 fprintf ((FILE *) stream, "%016lx", value);
ae4221d7 7244#else
cc55aec9
AM		 7245 fprintf ((FILE *) stream, "%08lx%08lx",
7246 _bfd_int64_high (value), _bfd_int64_low (value));
ae4221d7 7247#endif
cc55aec9 7248 }
ae4221d7
L		 7249 else
7250 fprintf ((FILE *) stream, "%08lx",
7251 (unsigned long) (value & 0xffffffff));
7252 }
d3b05f8d
L		 7253#else
7254 fprintf_vma ((FILE *) stream, value);
7255#endif
ae4221d7 7256}
db6751f2
JJ		 7257
7258enum elf_reloc_type_class
f51e552e
AM		 7259_bfd_elf_reloc_type_class (rela)
7260 const Elf_Internal_Rela *rela ATTRIBUTE_UNUSED;
db6751f2
JJ		 7261{
7262 return reloc_class_normal;
7263}
f8df10f4 7264
47d9a591 7265/* For RELA architectures, return the relocation value for a
f8df10f4
JJ		 7266 relocation against a local symbol. */
7267
7268bfd_vma
7269_bfd_elf_rela_local_sym (abfd, sym, sec, rel)
7270 bfd *abfd;
7271 Elf_Internal_Sym *sym;
7272 asection *sec;
7273 Elf_Internal_Rela *rel;
7274{
7275 bfd_vma relocation;
7276
7277 relocation = (sec->output_section->vma
7278 + sec->output_offset
7279 + sym->st_value);
7280 if ((sec->flags & SEC_MERGE)
c629eae0 7281 && ELF_ST_TYPE (sym->st_info) == STT_SECTION
65765700 7282 && elf_section_data (sec)->sec_info_type == ELF_INFO_TYPE_MERGE)
f8df10f4
JJ		 7283 {
7284 asection *msec;
7285
7286 msec = sec;
7287 rel->r_addend =
7288 _bfd_merged_section_offset (abfd, &msec,
65765700 7289 elf_section_data (sec)->sec_info,
f8df10f4
JJ		 7290 sym->st_value + rel->r_addend,
7291 (bfd_vma) 0)
7292 - relocation;
7293 rel->r_addend += msec->output_section->vma + msec->output_offset;
7294 }
7295 return relocation;
7296}
c629eae0
JJ		 7297
7298bfd_vma
7299_bfd_elf_rel_local_sym (abfd, sym, psec, addend)
7300 bfd *abfd;
7301 Elf_Internal_Sym *sym;
7302 asection **psec;
7303 bfd_vma addend;
47d9a591 7304{
c629eae0
JJ		 7305 asection *sec = *psec;
7306
65765700 7307 if (elf_section_data (sec)->sec_info_type != ELF_INFO_TYPE_MERGE)
c629eae0
JJ		 7308 return sym->st_value + addend;
7309
7310 return _bfd_merged_section_offset (abfd, psec,
65765700 7311 elf_section_data (sec)->sec_info,
c629eae0
JJ		 7312 sym->st_value + addend, (bfd_vma) 0);
7313}
7314
7315bfd_vma
7316_bfd_elf_section_offset (abfd, info, sec, offset)
7317 bfd *abfd;
7318 struct bfd_link_info *info;
7319 asection *sec;
7320 bfd_vma offset;
7321{
7322 struct bfd_elf_section_data *sec_data;
7323
7324 sec_data = elf_section_data (sec);
65765700
JJ		 7325 switch (sec_data->sec_info_type)
7326 {
7327 case ELF_INFO_TYPE_STABS:
126495ed
AM		 7328 return _bfd_stab_section_offset (abfd,
7329 &elf_hash_table (info)->merge_info,
7330 sec, &sec_data->sec_info, offset);
65765700
JJ		 7331 case ELF_INFO_TYPE_EH_FRAME:
7332 return _bfd_elf_eh_frame_section_offset (abfd, sec, offset);
7333 default:
7334 return offset;
7335 }
c629eae0 7336}
GDB Binutils - Deliverables
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