1 /* ELF executable support for BFD.
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
3 2003 Free Software Foundation, Inc.
5 This file is part of BFD, the Binary File Descriptor library.
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.
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.
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. */
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).
29 Documentation of the internals of the support code still needs
30 to be written. The code is changing quickly enough that we
31 haven't bothered yet. */
33 /* For sparc64-cross-sparc32. */
41 #include "libiberty.h"
43 static INLINE
struct elf_segment_map
*make_mapping
44 PARAMS ((bfd
*, asection
**, unsigned int, unsigned int, bfd_boolean
));
45 static bfd_boolean map_sections_to_segments
47 static int elf_sort_sections
48 PARAMS ((const PTR
, const PTR
));
49 static bfd_boolean assign_file_positions_for_segments
51 static bfd_boolean assign_file_positions_except_relocs
53 static bfd_boolean prep_headers
55 static bfd_boolean swap_out_syms
56 PARAMS ((bfd
*, struct bfd_strtab_hash
**, int));
57 static bfd_boolean copy_private_bfd_data
58 PARAMS ((bfd
*, bfd
*));
60 PARAMS ((bfd
*, file_ptr
, bfd_size_type
));
61 static const char *group_signature
62 PARAMS ((bfd
*, Elf_Internal_Shdr
*));
63 static bfd_boolean setup_group
64 PARAMS ((bfd
*, Elf_Internal_Shdr
*, asection
*));
65 static void merge_sections_remove_hook
66 PARAMS ((bfd
*, asection
*));
67 static void elf_fake_sections
68 PARAMS ((bfd
*, asection
*, PTR
));
69 static bfd_boolean assign_section_numbers
71 static INLINE
int sym_is_global
72 PARAMS ((bfd
*, asymbol
*));
73 static bfd_boolean elf_map_symbols
75 static bfd_size_type get_program_header_size
77 static bfd_boolean elfcore_read_notes
78 PARAMS ((bfd
*, file_ptr
, bfd_size_type
));
79 static bfd_boolean elf_find_function
80 PARAMS ((bfd
*, asection
*, asymbol
**, bfd_vma
, const char **,
82 static int elfcore_make_pid
84 static bfd_boolean elfcore_maybe_make_sect
85 PARAMS ((bfd
*, char *, asection
*));
86 static bfd_boolean elfcore_make_note_pseudosection
87 PARAMS ((bfd
*, char *, Elf_Internal_Note
*));
88 static bfd_boolean elfcore_grok_prfpreg
89 PARAMS ((bfd
*, Elf_Internal_Note
*));
90 static bfd_boolean elfcore_grok_prxfpreg
91 PARAMS ((bfd
*, Elf_Internal_Note
*));
92 static bfd_boolean elfcore_grok_note
93 PARAMS ((bfd
*, Elf_Internal_Note
*));
94 static bfd_boolean elfcore_netbsd_get_lwpid
95 PARAMS ((Elf_Internal_Note
*, int *));
96 static bfd_boolean elfcore_grok_netbsd_procinfo
97 PARAMS ((bfd
*, Elf_Internal_Note
*));
98 static bfd_boolean elfcore_grok_netbsd_note
99 PARAMS ((bfd
*, Elf_Internal_Note
*));
100 static bfd_boolean elfcore_grok_nto_gregs
101 PARAMS ((bfd
*, Elf_Internal_Note
*, pid_t
));
102 static bfd_boolean elfcore_grok_nto_status
103 PARAMS ((bfd
*, Elf_Internal_Note
*, pid_t
*));
104 static bfd_boolean elfcore_grok_nto_note
105 PARAMS ((bfd
*, Elf_Internal_Note
*));
107 /* Swap version information in and out. The version information is
108 currently size independent. If that ever changes, this code will
109 need to move into elfcode.h. */
111 /* Swap in a Verdef structure. */
114 _bfd_elf_swap_verdef_in (abfd
, src
, dst
)
116 const Elf_External_Verdef
*src
;
117 Elf_Internal_Verdef
*dst
;
119 dst
->vd_version
= H_GET_16 (abfd
, src
->vd_version
);
120 dst
->vd_flags
= H_GET_16 (abfd
, src
->vd_flags
);
121 dst
->vd_ndx
= H_GET_16 (abfd
, src
->vd_ndx
);
122 dst
->vd_cnt
= H_GET_16 (abfd
, src
->vd_cnt
);
123 dst
->vd_hash
= H_GET_32 (abfd
, src
->vd_hash
);
124 dst
->vd_aux
= H_GET_32 (abfd
, src
->vd_aux
);
125 dst
->vd_next
= H_GET_32 (abfd
, src
->vd_next
);
128 /* Swap out a Verdef structure. */
131 _bfd_elf_swap_verdef_out (abfd
, src
, dst
)
133 const Elf_Internal_Verdef
*src
;
134 Elf_External_Verdef
*dst
;
136 H_PUT_16 (abfd
, src
->vd_version
, dst
->vd_version
);
137 H_PUT_16 (abfd
, src
->vd_flags
, dst
->vd_flags
);
138 H_PUT_16 (abfd
, src
->vd_ndx
, dst
->vd_ndx
);
139 H_PUT_16 (abfd
, src
->vd_cnt
, dst
->vd_cnt
);
140 H_PUT_32 (abfd
, src
->vd_hash
, dst
->vd_hash
);
141 H_PUT_32 (abfd
, src
->vd_aux
, dst
->vd_aux
);
142 H_PUT_32 (abfd
, src
->vd_next
, dst
->vd_next
);
145 /* Swap in a Verdaux structure. */
148 _bfd_elf_swap_verdaux_in (abfd
, src
, dst
)
150 const Elf_External_Verdaux
*src
;
151 Elf_Internal_Verdaux
*dst
;
153 dst
->vda_name
= H_GET_32 (abfd
, src
->vda_name
);
154 dst
->vda_next
= H_GET_32 (abfd
, src
->vda_next
);
157 /* Swap out a Verdaux structure. */
160 _bfd_elf_swap_verdaux_out (abfd
, src
, dst
)
162 const Elf_Internal_Verdaux
*src
;
163 Elf_External_Verdaux
*dst
;
165 H_PUT_32 (abfd
, src
->vda_name
, dst
->vda_name
);
166 H_PUT_32 (abfd
, src
->vda_next
, dst
->vda_next
);
169 /* Swap in a Verneed structure. */
172 _bfd_elf_swap_verneed_in (abfd
, src
, dst
)
174 const Elf_External_Verneed
*src
;
175 Elf_Internal_Verneed
*dst
;
177 dst
->vn_version
= H_GET_16 (abfd
, src
->vn_version
);
178 dst
->vn_cnt
= H_GET_16 (abfd
, src
->vn_cnt
);
179 dst
->vn_file
= H_GET_32 (abfd
, src
->vn_file
);
180 dst
->vn_aux
= H_GET_32 (abfd
, src
->vn_aux
);
181 dst
->vn_next
= H_GET_32 (abfd
, src
->vn_next
);
184 /* Swap out a Verneed structure. */
187 _bfd_elf_swap_verneed_out (abfd
, src
, dst
)
189 const Elf_Internal_Verneed
*src
;
190 Elf_External_Verneed
*dst
;
192 H_PUT_16 (abfd
, src
->vn_version
, dst
->vn_version
);
193 H_PUT_16 (abfd
, src
->vn_cnt
, dst
->vn_cnt
);
194 H_PUT_32 (abfd
, src
->vn_file
, dst
->vn_file
);
195 H_PUT_32 (abfd
, src
->vn_aux
, dst
->vn_aux
);
196 H_PUT_32 (abfd
, src
->vn_next
, dst
->vn_next
);
199 /* Swap in a Vernaux structure. */
202 _bfd_elf_swap_vernaux_in (abfd
, src
, dst
)
204 const Elf_External_Vernaux
*src
;
205 Elf_Internal_Vernaux
*dst
;
207 dst
->vna_hash
= H_GET_32 (abfd
, src
->vna_hash
);
208 dst
->vna_flags
= H_GET_16 (abfd
, src
->vna_flags
);
209 dst
->vna_other
= H_GET_16 (abfd
, src
->vna_other
);
210 dst
->vna_name
= H_GET_32 (abfd
, src
->vna_name
);
211 dst
->vna_next
= H_GET_32 (abfd
, src
->vna_next
);
214 /* Swap out a Vernaux structure. */
217 _bfd_elf_swap_vernaux_out (abfd
, src
, dst
)
219 const Elf_Internal_Vernaux
*src
;
220 Elf_External_Vernaux
*dst
;
222 H_PUT_32 (abfd
, src
->vna_hash
, dst
->vna_hash
);
223 H_PUT_16 (abfd
, src
->vna_flags
, dst
->vna_flags
);
224 H_PUT_16 (abfd
, src
->vna_other
, dst
->vna_other
);
225 H_PUT_32 (abfd
, src
->vna_name
, dst
->vna_name
);
226 H_PUT_32 (abfd
, src
->vna_next
, dst
->vna_next
);
229 /* Swap in a Versym structure. */
232 _bfd_elf_swap_versym_in (abfd
, src
, dst
)
234 const Elf_External_Versym
*src
;
235 Elf_Internal_Versym
*dst
;
237 dst
->vs_vers
= H_GET_16 (abfd
, src
->vs_vers
);
240 /* Swap out a Versym structure. */
243 _bfd_elf_swap_versym_out (abfd
, src
, dst
)
245 const Elf_Internal_Versym
*src
;
246 Elf_External_Versym
*dst
;
248 H_PUT_16 (abfd
, src
->vs_vers
, dst
->vs_vers
);
251 /* Standard ELF hash function. Do not change this function; you will
252 cause invalid hash tables to be generated. */
255 bfd_elf_hash (namearg
)
258 const unsigned char *name
= (const unsigned char *) namearg
;
263 while ((ch
= *name
++) != '\0')
266 if ((g
= (h
& 0xf0000000)) != 0)
269 /* The ELF ABI says `h &= ~g', but this is equivalent in
270 this case and on some machines one insn instead of two. */
274 return h
& 0xffffffff;
277 /* Read a specified number of bytes at a specified offset in an ELF
278 file, into a newly allocated buffer, and return a pointer to the
282 elf_read (abfd
, offset
, size
)
289 if ((buf
= bfd_alloc (abfd
, size
)) == NULL
)
291 if (bfd_seek (abfd
, offset
, SEEK_SET
) != 0)
293 if (bfd_bread ((PTR
) buf
, size
, abfd
) != size
)
295 if (bfd_get_error () != bfd_error_system_call
)
296 bfd_set_error (bfd_error_file_truncated
);
303 bfd_elf_mkobject (abfd
)
306 /* This just does initialization. */
307 /* coff_mkobject zalloc's space for tdata.coff_obj_data ... */
308 bfd_size_type amt
= sizeof (struct elf_obj_tdata
);
309 elf_tdata (abfd
) = (struct elf_obj_tdata
*) bfd_zalloc (abfd
, amt
);
310 if (elf_tdata (abfd
) == 0)
312 /* Since everything is done at close time, do we need any
319 bfd_elf_mkcorefile (abfd
)
322 /* I think this can be done just like an object file. */
323 return bfd_elf_mkobject (abfd
);
327 bfd_elf_get_str_section (abfd
, shindex
)
329 unsigned int shindex
;
331 Elf_Internal_Shdr
**i_shdrp
;
332 char *shstrtab
= NULL
;
334 bfd_size_type shstrtabsize
;
336 i_shdrp
= elf_elfsections (abfd
);
337 if (i_shdrp
== 0 || i_shdrp
[shindex
] == 0)
340 shstrtab
= (char *) i_shdrp
[shindex
]->contents
;
341 if (shstrtab
== NULL
)
343 /* No cached one, attempt to read, and cache what we read. */
344 offset
= i_shdrp
[shindex
]->sh_offset
;
345 shstrtabsize
= i_shdrp
[shindex
]->sh_size
;
346 shstrtab
= elf_read (abfd
, offset
, shstrtabsize
);
347 i_shdrp
[shindex
]->contents
= (PTR
) shstrtab
;
353 bfd_elf_string_from_elf_section (abfd
, shindex
, strindex
)
355 unsigned int shindex
;
356 unsigned int strindex
;
358 Elf_Internal_Shdr
*hdr
;
363 hdr
= elf_elfsections (abfd
)[shindex
];
365 if (hdr
->contents
== NULL
366 && bfd_elf_get_str_section (abfd
, shindex
) == NULL
)
369 if (strindex
>= hdr
->sh_size
)
371 (*_bfd_error_handler
)
372 (_("%s: invalid string offset %u >= %lu for section `%s'"),
373 bfd_archive_filename (abfd
), strindex
, (unsigned long) hdr
->sh_size
,
374 ((shindex
== elf_elfheader(abfd
)->e_shstrndx
375 && strindex
== hdr
->sh_name
)
377 : elf_string_from_elf_strtab (abfd
, hdr
->sh_name
)));
381 return ((char *) hdr
->contents
) + strindex
;
384 /* Read and convert symbols to internal format.
385 SYMCOUNT specifies the number of symbols to read, starting from
386 symbol SYMOFFSET. If any of INTSYM_BUF, EXTSYM_BUF or EXTSHNDX_BUF
387 are non-NULL, they are used to store the internal symbols, external
388 symbols, and symbol section index extensions, respectively. */
391 bfd_elf_get_elf_syms (ibfd
, symtab_hdr
, symcount
, symoffset
,
392 intsym_buf
, extsym_buf
, extshndx_buf
)
394 Elf_Internal_Shdr
*symtab_hdr
;
397 Elf_Internal_Sym
*intsym_buf
;
399 Elf_External_Sym_Shndx
*extshndx_buf
;
401 Elf_Internal_Shdr
*shndx_hdr
;
403 const bfd_byte
*esym
;
404 Elf_External_Sym_Shndx
*alloc_extshndx
;
405 Elf_External_Sym_Shndx
*shndx
;
406 Elf_Internal_Sym
*isym
;
407 Elf_Internal_Sym
*isymend
;
408 struct elf_backend_data
*bed
;
416 /* Normal syms might have section extension entries. */
418 if (symtab_hdr
== &elf_tdata (ibfd
)->symtab_hdr
)
419 shndx_hdr
= &elf_tdata (ibfd
)->symtab_shndx_hdr
;
421 /* Read the symbols. */
423 alloc_extshndx
= NULL
;
424 bed
= get_elf_backend_data (ibfd
);
425 extsym_size
= bed
->s
->sizeof_sym
;
426 amt
= symcount
* extsym_size
;
427 pos
= symtab_hdr
->sh_offset
+ symoffset
* extsym_size
;
428 if (extsym_buf
== NULL
)
430 alloc_ext
= bfd_malloc (amt
);
431 extsym_buf
= alloc_ext
;
433 if (extsym_buf
== NULL
434 || bfd_seek (ibfd
, pos
, SEEK_SET
) != 0
435 || bfd_bread (extsym_buf
, amt
, ibfd
) != amt
)
441 if (shndx_hdr
== NULL
|| shndx_hdr
->sh_size
== 0)
445 amt
= symcount
* sizeof (Elf_External_Sym_Shndx
);
446 pos
= shndx_hdr
->sh_offset
+ symoffset
* sizeof (Elf_External_Sym_Shndx
);
447 if (extshndx_buf
== NULL
)
449 alloc_extshndx
= (Elf_External_Sym_Shndx
*) bfd_malloc (amt
);
450 extshndx_buf
= alloc_extshndx
;
452 if (extshndx_buf
== NULL
453 || bfd_seek (ibfd
, pos
, SEEK_SET
) != 0
454 || bfd_bread (extshndx_buf
, amt
, ibfd
) != amt
)
461 if (intsym_buf
== NULL
)
463 bfd_size_type amt
= symcount
* sizeof (Elf_Internal_Sym
);
464 intsym_buf
= (Elf_Internal_Sym
*) bfd_malloc (amt
);
465 if (intsym_buf
== NULL
)
469 /* Convert the symbols to internal form. */
470 isymend
= intsym_buf
+ symcount
;
471 for (esym
= extsym_buf
, isym
= intsym_buf
, shndx
= extshndx_buf
;
473 esym
+= extsym_size
, isym
++, shndx
= shndx
!= NULL
? shndx
+ 1 : NULL
)
474 (*bed
->s
->swap_symbol_in
) (ibfd
, esym
, (const PTR
) shndx
, isym
);
477 if (alloc_ext
!= NULL
)
479 if (alloc_extshndx
!= NULL
)
480 free (alloc_extshndx
);
485 /* Look up a symbol name. */
487 bfd_elf_local_sym_name (abfd
, isym
)
489 Elf_Internal_Sym
*isym
;
491 unsigned int iname
= isym
->st_name
;
492 unsigned int shindex
= elf_tdata (abfd
)->symtab_hdr
.sh_link
;
493 if (iname
== 0 && ELF_ST_TYPE (isym
->st_info
) == STT_SECTION
)
495 iname
= elf_elfsections (abfd
)[isym
->st_shndx
]->sh_name
;
496 shindex
= elf_elfheader (abfd
)->e_shstrndx
;
499 return bfd_elf_string_from_elf_section (abfd
, shindex
, iname
);
502 /* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP
503 sections. The first element is the flags, the rest are section
506 typedef union elf_internal_group
{
507 Elf_Internal_Shdr
*shdr
;
509 } Elf_Internal_Group
;
511 /* Return the name of the group signature symbol. Why isn't the
512 signature just a string? */
515 group_signature (abfd
, ghdr
)
517 Elf_Internal_Shdr
*ghdr
;
519 Elf_Internal_Shdr
*hdr
;
520 unsigned char esym
[sizeof (Elf64_External_Sym
)];
521 Elf_External_Sym_Shndx eshndx
;
522 Elf_Internal_Sym isym
;
524 /* First we need to ensure the symbol table is available. */
525 if (! bfd_section_from_shdr (abfd
, ghdr
->sh_link
))
528 /* Go read the symbol. */
529 hdr
= &elf_tdata (abfd
)->symtab_hdr
;
530 if (bfd_elf_get_elf_syms (abfd
, hdr
, 1, ghdr
->sh_info
,
531 &isym
, esym
, &eshndx
) == NULL
)
534 return bfd_elf_local_sym_name (abfd
, &isym
);
537 /* Set next_in_group list pointer, and group name for NEWSECT. */
540 setup_group (abfd
, hdr
, newsect
)
542 Elf_Internal_Shdr
*hdr
;
545 unsigned int num_group
= elf_tdata (abfd
)->num_group
;
547 /* If num_group is zero, read in all SHT_GROUP sections. The count
548 is set to -1 if there are no SHT_GROUP sections. */
551 unsigned int i
, shnum
;
553 /* First count the number of groups. If we have a SHT_GROUP
554 section with just a flag word (ie. sh_size is 4), ignore it. */
555 shnum
= elf_numsections (abfd
);
557 for (i
= 0; i
< shnum
; i
++)
559 Elf_Internal_Shdr
*shdr
= elf_elfsections (abfd
)[i
];
560 if (shdr
->sh_type
== SHT_GROUP
&& shdr
->sh_size
>= 8)
565 num_group
= (unsigned) -1;
566 elf_tdata (abfd
)->num_group
= num_group
;
570 /* We keep a list of elf section headers for group sections,
571 so we can find them quickly. */
572 bfd_size_type amt
= num_group
* sizeof (Elf_Internal_Shdr
*);
573 elf_tdata (abfd
)->group_sect_ptr
= bfd_alloc (abfd
, amt
);
574 if (elf_tdata (abfd
)->group_sect_ptr
== NULL
)
578 for (i
= 0; i
< shnum
; i
++)
580 Elf_Internal_Shdr
*shdr
= elf_elfsections (abfd
)[i
];
581 if (shdr
->sh_type
== SHT_GROUP
&& shdr
->sh_size
>= 8)
584 Elf_Internal_Group
*dest
;
586 /* Add to list of sections. */
587 elf_tdata (abfd
)->group_sect_ptr
[num_group
] = shdr
;
590 /* Read the raw contents. */
591 BFD_ASSERT (sizeof (*dest
) >= 4);
592 amt
= shdr
->sh_size
* sizeof (*dest
) / 4;
593 shdr
->contents
= bfd_alloc (abfd
, amt
);
594 if (shdr
->contents
== NULL
595 || bfd_seek (abfd
, shdr
->sh_offset
, SEEK_SET
) != 0
596 || (bfd_bread (shdr
->contents
, shdr
->sh_size
, abfd
)
600 /* Translate raw contents, a flag word followed by an
601 array of elf section indices all in target byte order,
602 to the flag word followed by an array of elf section
604 src
= shdr
->contents
+ shdr
->sh_size
;
605 dest
= (Elf_Internal_Group
*) (shdr
->contents
+ amt
);
612 idx
= H_GET_32 (abfd
, src
);
613 if (src
== shdr
->contents
)
616 if (shdr
->bfd_section
!= NULL
&& (idx
& GRP_COMDAT
))
617 shdr
->bfd_section
->flags
618 |= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_DISCARD
;
623 ((*_bfd_error_handler
)
624 (_("%s: invalid SHT_GROUP entry"),
625 bfd_archive_filename (abfd
)));
628 dest
->shdr
= elf_elfsections (abfd
)[idx
];
635 if (num_group
!= (unsigned) -1)
639 for (i
= 0; i
< num_group
; i
++)
641 Elf_Internal_Shdr
*shdr
= elf_tdata (abfd
)->group_sect_ptr
[i
];
642 Elf_Internal_Group
*idx
= (Elf_Internal_Group
*) shdr
->contents
;
643 unsigned int n_elt
= shdr
->sh_size
/ 4;
645 /* Look through this group's sections to see if current
646 section is a member. */
648 if ((++idx
)->shdr
== hdr
)
652 /* We are a member of this group. Go looking through
653 other members to see if any others are linked via
655 idx
= (Elf_Internal_Group
*) shdr
->contents
;
656 n_elt
= shdr
->sh_size
/ 4;
658 if ((s
= (++idx
)->shdr
->bfd_section
) != NULL
659 && elf_next_in_group (s
) != NULL
)
663 /* Snarf the group name from other member, and
664 insert current section in circular list. */
665 elf_group_name (newsect
) = elf_group_name (s
);
666 elf_next_in_group (newsect
) = elf_next_in_group (s
);
667 elf_next_in_group (s
) = newsect
;
673 gname
= group_signature (abfd
, shdr
);
676 elf_group_name (newsect
) = gname
;
678 /* Start a circular list with one element. */
679 elf_next_in_group (newsect
) = newsect
;
682 /* If the group section has been created, point to the
684 if (shdr
->bfd_section
!= NULL
)
685 elf_next_in_group (shdr
->bfd_section
) = newsect
;
693 if (elf_group_name (newsect
) == NULL
)
695 (*_bfd_error_handler
) (_("%s: no group info for section %s"),
696 bfd_archive_filename (abfd
), newsect
->name
);
702 bfd_elf_discard_group (abfd
, group
)
703 bfd
*abfd ATTRIBUTE_UNUSED
;
706 asection
*first
= elf_next_in_group (group
);
711 s
->output_section
= bfd_abs_section_ptr
;
712 s
= elf_next_in_group (s
);
713 /* These lists are circular. */
720 /* Make a BFD section from an ELF section. We store a pointer to the
721 BFD section in the bfd_section field of the header. */
724 _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
)
726 Elf_Internal_Shdr
*hdr
;
731 struct elf_backend_data
*bed
;
733 if (hdr
->bfd_section
!= NULL
)
735 BFD_ASSERT (strcmp (name
,
736 bfd_get_section_name (abfd
, hdr
->bfd_section
)) == 0);
740 newsect
= bfd_make_section_anyway (abfd
, name
);
744 newsect
->filepos
= hdr
->sh_offset
;
746 if (! bfd_set_section_vma (abfd
, newsect
, hdr
->sh_addr
)
747 || ! bfd_set_section_size (abfd
, newsect
, hdr
->sh_size
)
748 || ! bfd_set_section_alignment (abfd
, newsect
,
749 bfd_log2 ((bfd_vma
) hdr
->sh_addralign
)))
752 flags
= SEC_NO_FLAGS
;
753 if (hdr
->sh_type
!= SHT_NOBITS
)
754 flags
|= SEC_HAS_CONTENTS
;
755 if (hdr
->sh_type
== SHT_GROUP
)
756 flags
|= SEC_GROUP
| SEC_EXCLUDE
;
757 if ((hdr
->sh_flags
& SHF_ALLOC
) != 0)
760 if (hdr
->sh_type
!= SHT_NOBITS
)
763 if ((hdr
->sh_flags
& SHF_WRITE
) == 0)
764 flags
|= SEC_READONLY
;
765 if ((hdr
->sh_flags
& SHF_EXECINSTR
) != 0)
767 else if ((flags
& SEC_LOAD
) != 0)
769 if ((hdr
->sh_flags
& SHF_MERGE
) != 0)
772 newsect
->entsize
= hdr
->sh_entsize
;
773 if ((hdr
->sh_flags
& SHF_STRINGS
) != 0)
774 flags
|= SEC_STRINGS
;
776 if (hdr
->sh_flags
& SHF_GROUP
)
777 if (!setup_group (abfd
, hdr
, newsect
))
779 if ((hdr
->sh_flags
& SHF_TLS
) != 0)
780 flags
|= SEC_THREAD_LOCAL
;
782 /* The debugging sections appear to be recognized only by name, not
785 static const char *debug_sec_names
[] =
794 for (i
= ARRAY_SIZE (debug_sec_names
); i
--;)
795 if (strncmp (name
, debug_sec_names
[i
], strlen (debug_sec_names
[i
])) == 0)
799 flags
|= SEC_DEBUGGING
;
802 /* As a GNU extension, if the name begins with .gnu.linkonce, we
803 only link a single copy of the section. This is used to support
804 g++. g++ will emit each template expansion in its own section.
805 The symbols will be defined as weak, so that multiple definitions
806 are permitted. The GNU linker extension is to actually discard
807 all but one of the sections. */
808 if (strncmp (name
, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0
809 && elf_next_in_group (newsect
) == NULL
)
810 flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_DISCARD
;
812 bed
= get_elf_backend_data (abfd
);
813 if (bed
->elf_backend_section_flags
)
814 if (! bed
->elf_backend_section_flags (&flags
, hdr
))
817 if (! bfd_set_section_flags (abfd
, newsect
, flags
))
820 if ((flags
& SEC_ALLOC
) != 0)
822 Elf_Internal_Phdr
*phdr
;
825 /* Look through the phdrs to see if we need to adjust the lma.
826 If all the p_paddr fields are zero, we ignore them, since
827 some ELF linkers produce such output. */
828 phdr
= elf_tdata (abfd
)->phdr
;
829 for (i
= 0; i
< elf_elfheader (abfd
)->e_phnum
; i
++, phdr
++)
831 if (phdr
->p_paddr
!= 0)
834 if (i
< elf_elfheader (abfd
)->e_phnum
)
836 phdr
= elf_tdata (abfd
)->phdr
;
837 for (i
= 0; i
< elf_elfheader (abfd
)->e_phnum
; i
++, phdr
++)
839 /* This section is part of this segment if its file
840 offset plus size lies within the segment's memory
841 span and, if the section is loaded, the extent of the
842 loaded data lies within the extent of the segment.
844 Note - we used to check the p_paddr field as well, and
845 refuse to set the LMA if it was 0. This is wrong
846 though, as a perfectly valid initialised segment can
847 have a p_paddr of zero. Some architectures, eg ARM,
848 place special significance on the address 0 and
849 executables need to be able to have a segment which
850 covers this address. */
851 if (phdr
->p_type
== PT_LOAD
852 && (bfd_vma
) hdr
->sh_offset
>= phdr
->p_offset
853 && (hdr
->sh_offset
+ hdr
->sh_size
854 <= phdr
->p_offset
+ phdr
->p_memsz
)
855 && ((flags
& SEC_LOAD
) == 0
856 || (hdr
->sh_offset
+ hdr
->sh_size
857 <= phdr
->p_offset
+ phdr
->p_filesz
)))
859 if ((flags
& SEC_LOAD
) == 0)
860 newsect
->lma
= (phdr
->p_paddr
861 + hdr
->sh_addr
- phdr
->p_vaddr
);
863 /* We used to use the same adjustment for SEC_LOAD
864 sections, but that doesn't work if the segment
865 is packed with code from multiple VMAs.
866 Instead we calculate the section LMA based on
867 the segment LMA. It is assumed that the
868 segment will contain sections with contiguous
869 LMAs, even if the VMAs are not. */
870 newsect
->lma
= (phdr
->p_paddr
871 + hdr
->sh_offset
- phdr
->p_offset
);
873 /* With contiguous segments, we can't tell from file
874 offsets whether a section with zero size should
875 be placed at the end of one segment or the
876 beginning of the next. Decide based on vaddr. */
877 if (hdr
->sh_addr
>= phdr
->p_vaddr
878 && (hdr
->sh_addr
+ hdr
->sh_size
879 <= phdr
->p_vaddr
+ phdr
->p_memsz
))
886 hdr
->bfd_section
= newsect
;
887 elf_section_data (newsect
)->this_hdr
= *hdr
;
897 struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name);
900 Helper functions for GDB to locate the string tables.
901 Since BFD hides string tables from callers, GDB needs to use an
902 internal hook to find them. Sun's .stabstr, in particular,
903 isn't even pointed to by the .stab section, so ordinary
904 mechanisms wouldn't work to find it, even if we had some.
907 struct elf_internal_shdr
*
908 bfd_elf_find_section (abfd
, name
)
912 Elf_Internal_Shdr
**i_shdrp
;
917 i_shdrp
= elf_elfsections (abfd
);
920 shstrtab
= bfd_elf_get_str_section (abfd
,
921 elf_elfheader (abfd
)->e_shstrndx
);
922 if (shstrtab
!= NULL
)
924 max
= elf_numsections (abfd
);
925 for (i
= 1; i
< max
; i
++)
926 if (!strcmp (&shstrtab
[i_shdrp
[i
]->sh_name
], name
))
933 const char *const bfd_elf_section_type_names
[] = {
934 "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB",
935 "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE",
936 "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM",
939 /* ELF relocs are against symbols. If we are producing relocatable
940 output, and the reloc is against an external symbol, and nothing
941 has given us any additional addend, the resulting reloc will also
942 be against the same symbol. In such a case, we don't want to
943 change anything about the way the reloc is handled, since it will
944 all be done at final link time. Rather than put special case code
945 into bfd_perform_relocation, all the reloc types use this howto
946 function. It just short circuits the reloc if producing
947 relocatable output against an external symbol. */
949 bfd_reloc_status_type
950 bfd_elf_generic_reloc (abfd
,
957 bfd
*abfd ATTRIBUTE_UNUSED
;
958 arelent
*reloc_entry
;
960 PTR data ATTRIBUTE_UNUSED
;
961 asection
*input_section
;
963 char **error_message ATTRIBUTE_UNUSED
;
965 if (output_bfd
!= (bfd
*) NULL
966 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
967 && (! reloc_entry
->howto
->partial_inplace
968 || reloc_entry
->addend
== 0))
970 reloc_entry
->address
+= input_section
->output_offset
;
974 return bfd_reloc_continue
;
977 /* Make sure sec_info_type is cleared if sec_info is cleared too. */
980 merge_sections_remove_hook (abfd
, sec
)
981 bfd
*abfd ATTRIBUTE_UNUSED
;
984 BFD_ASSERT (sec
->sec_info_type
== ELF_INFO_TYPE_MERGE
);
985 sec
->sec_info_type
= ELF_INFO_TYPE_NONE
;
988 /* Finish SHF_MERGE section merging. */
991 _bfd_elf_merge_sections (abfd
, info
)
993 struct bfd_link_info
*info
;
995 if (!is_elf_hash_table (info
))
997 if (elf_hash_table (info
)->merge_info
)
998 _bfd_merge_sections (abfd
, elf_hash_table (info
)->merge_info
,
999 merge_sections_remove_hook
);
1004 _bfd_elf_link_just_syms (sec
, info
)
1006 struct bfd_link_info
*info
;
1008 sec
->output_section
= bfd_abs_section_ptr
;
1009 sec
->output_offset
= sec
->vma
;
1010 if (!is_elf_hash_table (info
))
1013 sec
->sec_info_type
= ELF_INFO_TYPE_JUST_SYMS
;
1016 /* Copy the program header and other data from one object module to
1020 _bfd_elf_copy_private_bfd_data (ibfd
, obfd
)
1024 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
1025 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
1028 BFD_ASSERT (!elf_flags_init (obfd
)
1029 || (elf_elfheader (obfd
)->e_flags
1030 == elf_elfheader (ibfd
)->e_flags
));
1032 elf_gp (obfd
) = elf_gp (ibfd
);
1033 elf_elfheader (obfd
)->e_flags
= elf_elfheader (ibfd
)->e_flags
;
1034 elf_flags_init (obfd
) = TRUE
;
1038 /* Print out the program headers. */
1041 _bfd_elf_print_private_bfd_data (abfd
, farg
)
1045 FILE *f
= (FILE *) farg
;
1046 Elf_Internal_Phdr
*p
;
1048 bfd_byte
*dynbuf
= NULL
;
1050 p
= elf_tdata (abfd
)->phdr
;
1055 fprintf (f
, _("\nProgram Header:\n"));
1056 c
= elf_elfheader (abfd
)->e_phnum
;
1057 for (i
= 0; i
< c
; i
++, p
++)
1064 case PT_NULL
: pt
= "NULL"; break;
1065 case PT_LOAD
: pt
= "LOAD"; break;
1066 case PT_DYNAMIC
: pt
= "DYNAMIC"; break;
1067 case PT_INTERP
: pt
= "INTERP"; break;
1068 case PT_NOTE
: pt
= "NOTE"; break;
1069 case PT_SHLIB
: pt
= "SHLIB"; break;
1070 case PT_PHDR
: pt
= "PHDR"; break;
1071 case PT_TLS
: pt
= "TLS"; break;
1072 case PT_GNU_EH_FRAME
: pt
= "EH_FRAME"; break;
1073 case PT_GNU_STACK
: pt
= "STACK"; break;
1074 default: sprintf (buf
, "0x%lx", p
->p_type
); pt
= buf
; break;
1076 fprintf (f
, "%8s off 0x", pt
);
1077 bfd_fprintf_vma (abfd
, f
, p
->p_offset
);
1078 fprintf (f
, " vaddr 0x");
1079 bfd_fprintf_vma (abfd
, f
, p
->p_vaddr
);
1080 fprintf (f
, " paddr 0x");
1081 bfd_fprintf_vma (abfd
, f
, p
->p_paddr
);
1082 fprintf (f
, " align 2**%u\n", bfd_log2 (p
->p_align
));
1083 fprintf (f
, " filesz 0x");
1084 bfd_fprintf_vma (abfd
, f
, p
->p_filesz
);
1085 fprintf (f
, " memsz 0x");
1086 bfd_fprintf_vma (abfd
, f
, p
->p_memsz
);
1087 fprintf (f
, " flags %c%c%c",
1088 (p
->p_flags
& PF_R
) != 0 ? 'r' : '-',
1089 (p
->p_flags
& PF_W
) != 0 ? 'w' : '-',
1090 (p
->p_flags
& PF_X
) != 0 ? 'x' : '-');
1091 if ((p
->p_flags
&~ (unsigned) (PF_R
| PF_W
| PF_X
)) != 0)
1092 fprintf (f
, " %lx", p
->p_flags
&~ (unsigned) (PF_R
| PF_W
| PF_X
));
1097 s
= bfd_get_section_by_name (abfd
, ".dynamic");
1101 unsigned long shlink
;
1102 bfd_byte
*extdyn
, *extdynend
;
1104 void (*swap_dyn_in
) PARAMS ((bfd
*, const PTR
, Elf_Internal_Dyn
*));
1106 fprintf (f
, _("\nDynamic Section:\n"));
1108 dynbuf
= (bfd_byte
*) bfd_malloc (s
->_raw_size
);
1111 if (! bfd_get_section_contents (abfd
, s
, (PTR
) dynbuf
, (file_ptr
) 0,
1115 elfsec
= _bfd_elf_section_from_bfd_section (abfd
, s
);
1118 shlink
= elf_elfsections (abfd
)[elfsec
]->sh_link
;
1120 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
1121 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
1124 extdynend
= extdyn
+ s
->_raw_size
;
1125 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
1127 Elf_Internal_Dyn dyn
;
1130 bfd_boolean stringp
;
1132 (*swap_dyn_in
) (abfd
, (PTR
) extdyn
, &dyn
);
1134 if (dyn
.d_tag
== DT_NULL
)
1141 sprintf (ab
, "0x%lx", (unsigned long) dyn
.d_tag
);
1145 case DT_NEEDED
: name
= "NEEDED"; stringp
= TRUE
; break;
1146 case DT_PLTRELSZ
: name
= "PLTRELSZ"; break;
1147 case DT_PLTGOT
: name
= "PLTGOT"; break;
1148 case DT_HASH
: name
= "HASH"; break;
1149 case DT_STRTAB
: name
= "STRTAB"; break;
1150 case DT_SYMTAB
: name
= "SYMTAB"; break;
1151 case DT_RELA
: name
= "RELA"; break;
1152 case DT_RELASZ
: name
= "RELASZ"; break;
1153 case DT_RELAENT
: name
= "RELAENT"; break;
1154 case DT_STRSZ
: name
= "STRSZ"; break;
1155 case DT_SYMENT
: name
= "SYMENT"; break;
1156 case DT_INIT
: name
= "INIT"; break;
1157 case DT_FINI
: name
= "FINI"; break;
1158 case DT_SONAME
: name
= "SONAME"; stringp
= TRUE
; break;
1159 case DT_RPATH
: name
= "RPATH"; stringp
= TRUE
; break;
1160 case DT_SYMBOLIC
: name
= "SYMBOLIC"; break;
1161 case DT_REL
: name
= "REL"; break;
1162 case DT_RELSZ
: name
= "RELSZ"; break;
1163 case DT_RELENT
: name
= "RELENT"; break;
1164 case DT_PLTREL
: name
= "PLTREL"; break;
1165 case DT_DEBUG
: name
= "DEBUG"; break;
1166 case DT_TEXTREL
: name
= "TEXTREL"; break;
1167 case DT_JMPREL
: name
= "JMPREL"; break;
1168 case DT_BIND_NOW
: name
= "BIND_NOW"; break;
1169 case DT_INIT_ARRAY
: name
= "INIT_ARRAY"; break;
1170 case DT_FINI_ARRAY
: name
= "FINI_ARRAY"; break;
1171 case DT_INIT_ARRAYSZ
: name
= "INIT_ARRAYSZ"; break;
1172 case DT_FINI_ARRAYSZ
: name
= "FINI_ARRAYSZ"; break;
1173 case DT_RUNPATH
: name
= "RUNPATH"; stringp
= TRUE
; break;
1174 case DT_FLAGS
: name
= "FLAGS"; break;
1175 case DT_PREINIT_ARRAY
: name
= "PREINIT_ARRAY"; break;
1176 case DT_PREINIT_ARRAYSZ
: name
= "PREINIT_ARRAYSZ"; break;
1177 case DT_CHECKSUM
: name
= "CHECKSUM"; break;
1178 case DT_PLTPADSZ
: name
= "PLTPADSZ"; break;
1179 case DT_MOVEENT
: name
= "MOVEENT"; break;
1180 case DT_MOVESZ
: name
= "MOVESZ"; break;
1181 case DT_FEATURE
: name
= "FEATURE"; break;
1182 case DT_POSFLAG_1
: name
= "POSFLAG_1"; break;
1183 case DT_SYMINSZ
: name
= "SYMINSZ"; break;
1184 case DT_SYMINENT
: name
= "SYMINENT"; break;
1185 case DT_CONFIG
: name
= "CONFIG"; stringp
= TRUE
; break;
1186 case DT_DEPAUDIT
: name
= "DEPAUDIT"; stringp
= TRUE
; break;
1187 case DT_AUDIT
: name
= "AUDIT"; stringp
= TRUE
; break;
1188 case DT_PLTPAD
: name
= "PLTPAD"; break;
1189 case DT_MOVETAB
: name
= "MOVETAB"; break;
1190 case DT_SYMINFO
: name
= "SYMINFO"; break;
1191 case DT_RELACOUNT
: name
= "RELACOUNT"; break;
1192 case DT_RELCOUNT
: name
= "RELCOUNT"; break;
1193 case DT_FLAGS_1
: name
= "FLAGS_1"; break;
1194 case DT_VERSYM
: name
= "VERSYM"; break;
1195 case DT_VERDEF
: name
= "VERDEF"; break;
1196 case DT_VERDEFNUM
: name
= "VERDEFNUM"; break;
1197 case DT_VERNEED
: name
= "VERNEED"; break;
1198 case DT_VERNEEDNUM
: name
= "VERNEEDNUM"; break;
1199 case DT_AUXILIARY
: name
= "AUXILIARY"; stringp
= TRUE
; break;
1200 case DT_USED
: name
= "USED"; break;
1201 case DT_FILTER
: name
= "FILTER"; stringp
= TRUE
; break;
1204 fprintf (f
, " %-11s ", name
);
1206 fprintf (f
, "0x%lx", (unsigned long) dyn
.d_un
.d_val
);
1210 unsigned int tagv
= dyn
.d_un
.d_val
;
1212 string
= bfd_elf_string_from_elf_section (abfd
, shlink
, tagv
);
1215 fprintf (f
, "%s", string
);
1224 if ((elf_dynverdef (abfd
) != 0 && elf_tdata (abfd
)->verdef
== NULL
)
1225 || (elf_dynverref (abfd
) != 0 && elf_tdata (abfd
)->verref
== NULL
))
1227 if (! _bfd_elf_slurp_version_tables (abfd
))
1231 if (elf_dynverdef (abfd
) != 0)
1233 Elf_Internal_Verdef
*t
;
1235 fprintf (f
, _("\nVersion definitions:\n"));
1236 for (t
= elf_tdata (abfd
)->verdef
; t
!= NULL
; t
= t
->vd_nextdef
)
1238 fprintf (f
, "%d 0x%2.2x 0x%8.8lx %s\n", t
->vd_ndx
,
1239 t
->vd_flags
, t
->vd_hash
, t
->vd_nodename
);
1240 if (t
->vd_auxptr
->vda_nextptr
!= NULL
)
1242 Elf_Internal_Verdaux
*a
;
1245 for (a
= t
->vd_auxptr
->vda_nextptr
;
1248 fprintf (f
, "%s ", a
->vda_nodename
);
1254 if (elf_dynverref (abfd
) != 0)
1256 Elf_Internal_Verneed
*t
;
1258 fprintf (f
, _("\nVersion References:\n"));
1259 for (t
= elf_tdata (abfd
)->verref
; t
!= NULL
; t
= t
->vn_nextref
)
1261 Elf_Internal_Vernaux
*a
;
1263 fprintf (f
, _(" required from %s:\n"), t
->vn_filename
);
1264 for (a
= t
->vn_auxptr
; a
!= NULL
; a
= a
->vna_nextptr
)
1265 fprintf (f
, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a
->vna_hash
,
1266 a
->vna_flags
, a
->vna_other
, a
->vna_nodename
);
1278 /* Display ELF-specific fields of a symbol. */
1281 bfd_elf_print_symbol (abfd
, filep
, symbol
, how
)
1285 bfd_print_symbol_type how
;
1287 FILE *file
= (FILE *) filep
;
1290 case bfd_print_symbol_name
:
1291 fprintf (file
, "%s", symbol
->name
);
1293 case bfd_print_symbol_more
:
1294 fprintf (file
, "elf ");
1295 bfd_fprintf_vma (abfd
, file
, symbol
->value
);
1296 fprintf (file
, " %lx", (long) symbol
->flags
);
1298 case bfd_print_symbol_all
:
1300 const char *section_name
;
1301 const char *name
= NULL
;
1302 struct elf_backend_data
*bed
;
1303 unsigned char st_other
;
1306 section_name
= symbol
->section
? symbol
->section
->name
: "(*none*)";
1308 bed
= get_elf_backend_data (abfd
);
1309 if (bed
->elf_backend_print_symbol_all
)
1310 name
= (*bed
->elf_backend_print_symbol_all
) (abfd
, filep
, symbol
);
1314 name
= symbol
->name
;
1315 bfd_print_symbol_vandf (abfd
, (PTR
) file
, symbol
);
1318 fprintf (file
, " %s\t", section_name
);
1319 /* Print the "other" value for a symbol. For common symbols,
1320 we've already printed the size; now print the alignment.
1321 For other symbols, we have no specified alignment, and
1322 we've printed the address; now print the size. */
1323 if (bfd_is_com_section (symbol
->section
))
1324 val
= ((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_value
;
1326 val
= ((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_size
;
1327 bfd_fprintf_vma (abfd
, file
, val
);
1329 /* If we have version information, print it. */
1330 if (elf_tdata (abfd
)->dynversym_section
!= 0
1331 && (elf_tdata (abfd
)->dynverdef_section
!= 0
1332 || elf_tdata (abfd
)->dynverref_section
!= 0))
1334 unsigned int vernum
;
1335 const char *version_string
;
1337 vernum
= ((elf_symbol_type
*) symbol
)->version
& VERSYM_VERSION
;
1340 version_string
= "";
1341 else if (vernum
== 1)
1342 version_string
= "Base";
1343 else if (vernum
<= elf_tdata (abfd
)->cverdefs
)
1345 elf_tdata (abfd
)->verdef
[vernum
- 1].vd_nodename
;
1348 Elf_Internal_Verneed
*t
;
1350 version_string
= "";
1351 for (t
= elf_tdata (abfd
)->verref
;
1355 Elf_Internal_Vernaux
*a
;
1357 for (a
= t
->vn_auxptr
; a
!= NULL
; a
= a
->vna_nextptr
)
1359 if (a
->vna_other
== vernum
)
1361 version_string
= a
->vna_nodename
;
1368 if ((((elf_symbol_type
*) symbol
)->version
& VERSYM_HIDDEN
) == 0)
1369 fprintf (file
, " %-11s", version_string
);
1374 fprintf (file
, " (%s)", version_string
);
1375 for (i
= 10 - strlen (version_string
); i
> 0; --i
)
1380 /* If the st_other field is not zero, print it. */
1381 st_other
= ((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_other
;
1386 case STV_INTERNAL
: fprintf (file
, " .internal"); break;
1387 case STV_HIDDEN
: fprintf (file
, " .hidden"); break;
1388 case STV_PROTECTED
: fprintf (file
, " .protected"); break;
1390 /* Some other non-defined flags are also present, so print
1392 fprintf (file
, " 0x%02x", (unsigned int) st_other
);
1395 fprintf (file
, " %s", name
);
1401 /* Create an entry in an ELF linker hash table. */
1403 struct bfd_hash_entry
*
1404 _bfd_elf_link_hash_newfunc (entry
, table
, string
)
1405 struct bfd_hash_entry
*entry
;
1406 struct bfd_hash_table
*table
;
1409 /* Allocate the structure if it has not already been allocated by a
1413 entry
= bfd_hash_allocate (table
, sizeof (struct elf_link_hash_entry
));
1418 /* Call the allocation method of the superclass. */
1419 entry
= _bfd_link_hash_newfunc (entry
, table
, string
);
1422 struct elf_link_hash_entry
*ret
= (struct elf_link_hash_entry
*) entry
;
1423 struct elf_link_hash_table
*htab
= (struct elf_link_hash_table
*) table
;
1425 /* Set local fields. */
1428 ret
->dynstr_index
= 0;
1429 ret
->elf_hash_value
= 0;
1430 ret
->weakdef
= NULL
;
1431 ret
->verinfo
.verdef
= NULL
;
1432 ret
->vtable_entries_size
= 0;
1433 ret
->vtable_entries_used
= NULL
;
1434 ret
->vtable_parent
= NULL
;
1435 ret
->got
= htab
->init_refcount
;
1436 ret
->plt
= htab
->init_refcount
;
1438 ret
->type
= STT_NOTYPE
;
1440 /* Assume that we have been called by a non-ELF symbol reader.
1441 This flag is then reset by the code which reads an ELF input
1442 file. This ensures that a symbol created by a non-ELF symbol
1443 reader will have the flag set correctly. */
1444 ret
->elf_link_hash_flags
= ELF_LINK_NON_ELF
;
1450 /* Copy data from an indirect symbol to its direct symbol, hiding the
1451 old indirect symbol. Also used for copying flags to a weakdef. */
1454 _bfd_elf_link_hash_copy_indirect (bed
, dir
, ind
)
1455 struct elf_backend_data
*bed
;
1456 struct elf_link_hash_entry
*dir
, *ind
;
1459 bfd_signed_vma lowest_valid
= bed
->can_refcount
;
1461 /* Copy down any references that we may have already seen to the
1462 symbol which just became indirect. */
1464 dir
->elf_link_hash_flags
|=
1465 (ind
->elf_link_hash_flags
1466 & (ELF_LINK_HASH_REF_DYNAMIC
1467 | ELF_LINK_HASH_REF_REGULAR
1468 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
1469 | ELF_LINK_NON_GOT_REF
));
1471 if (ind
->root
.type
!= bfd_link_hash_indirect
)
1474 /* Copy over the global and procedure linkage table refcount entries.
1475 These may have been already set up by a check_relocs routine. */
1476 tmp
= dir
->got
.refcount
;
1477 if (tmp
< lowest_valid
)
1479 dir
->got
.refcount
= ind
->got
.refcount
;
1480 ind
->got
.refcount
= tmp
;
1483 BFD_ASSERT (ind
->got
.refcount
< lowest_valid
);
1485 tmp
= dir
->plt
.refcount
;
1486 if (tmp
< lowest_valid
)
1488 dir
->plt
.refcount
= ind
->plt
.refcount
;
1489 ind
->plt
.refcount
= tmp
;
1492 BFD_ASSERT (ind
->plt
.refcount
< lowest_valid
);
1494 if (dir
->dynindx
== -1)
1496 dir
->dynindx
= ind
->dynindx
;
1497 dir
->dynstr_index
= ind
->dynstr_index
;
1499 ind
->dynstr_index
= 0;
1502 BFD_ASSERT (ind
->dynindx
== -1);
1506 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
)
1507 struct bfd_link_info
*info
;
1508 struct elf_link_hash_entry
*h
;
1509 bfd_boolean force_local
;
1511 h
->plt
= elf_hash_table (info
)->init_offset
;
1512 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
1515 h
->elf_link_hash_flags
|= ELF_LINK_FORCED_LOCAL
;
1516 if (h
->dynindx
!= -1)
1519 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
1525 /* Initialize an ELF linker hash table. */
1528 _bfd_elf_link_hash_table_init (table
, abfd
, newfunc
)
1529 struct elf_link_hash_table
*table
;
1531 struct bfd_hash_entry
*(*newfunc
)
1532 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*,
1537 table
->dynamic_sections_created
= FALSE
;
1538 table
->dynobj
= NULL
;
1539 /* Make sure can_refcount is extended to the width and signedness of
1540 init_refcount before we subtract one from it. */
1541 table
->init_refcount
.refcount
= get_elf_backend_data (abfd
)->can_refcount
;
1542 table
->init_refcount
.refcount
-= 1;
1543 table
->init_offset
.offset
= -(bfd_vma
) 1;
1544 /* The first dynamic symbol is a dummy. */
1545 table
->dynsymcount
= 1;
1546 table
->dynstr
= NULL
;
1547 table
->bucketcount
= 0;
1548 table
->needed
= NULL
;
1550 table
->stab_info
= NULL
;
1551 table
->merge_info
= NULL
;
1552 memset (&table
->eh_info
, 0, sizeof (table
->eh_info
));
1553 table
->dynlocal
= NULL
;
1554 table
->runpath
= NULL
;
1555 table
->tls_segment
= NULL
;
1556 table
->loaded
= NULL
;
1558 ret
= _bfd_link_hash_table_init (&table
->root
, abfd
, newfunc
);
1559 table
->root
.type
= bfd_link_elf_hash_table
;
1564 /* Create an ELF linker hash table. */
1566 struct bfd_link_hash_table
*
1567 _bfd_elf_link_hash_table_create (abfd
)
1570 struct elf_link_hash_table
*ret
;
1571 bfd_size_type amt
= sizeof (struct elf_link_hash_table
);
1573 ret
= (struct elf_link_hash_table
*) bfd_malloc (amt
);
1574 if (ret
== (struct elf_link_hash_table
*) NULL
)
1577 if (! _bfd_elf_link_hash_table_init (ret
, abfd
, _bfd_elf_link_hash_newfunc
))
1586 /* This is a hook for the ELF emulation code in the generic linker to
1587 tell the backend linker what file name to use for the DT_NEEDED
1588 entry for a dynamic object. The generic linker passes name as an
1589 empty string to indicate that no DT_NEEDED entry should be made. */
1592 bfd_elf_set_dt_needed_name (abfd
, name
)
1596 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1597 && bfd_get_format (abfd
) == bfd_object
)
1598 elf_dt_name (abfd
) = name
;
1602 bfd_elf_set_dt_needed_soname (abfd
, name
)
1606 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1607 && bfd_get_format (abfd
) == bfd_object
)
1608 elf_dt_soname (abfd
) = name
;
1611 /* Get the list of DT_NEEDED entries for a link. This is a hook for
1612 the linker ELF emulation code. */
1614 struct bfd_link_needed_list
*
1615 bfd_elf_get_needed_list (abfd
, info
)
1616 bfd
*abfd ATTRIBUTE_UNUSED
;
1617 struct bfd_link_info
*info
;
1619 if (! is_elf_hash_table (info
))
1621 return elf_hash_table (info
)->needed
;
1624 /* Get the list of DT_RPATH/DT_RUNPATH entries for a link. This is a
1625 hook for the linker ELF emulation code. */
1627 struct bfd_link_needed_list
*
1628 bfd_elf_get_runpath_list (abfd
, info
)
1629 bfd
*abfd ATTRIBUTE_UNUSED
;
1630 struct bfd_link_info
*info
;
1632 if (! is_elf_hash_table (info
))
1634 return elf_hash_table (info
)->runpath
;
1637 /* Get the name actually used for a dynamic object for a link. This
1638 is the SONAME entry if there is one. Otherwise, it is the string
1639 passed to bfd_elf_set_dt_needed_name, or it is the filename. */
1642 bfd_elf_get_dt_soname (abfd
)
1645 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1646 && bfd_get_format (abfd
) == bfd_object
)
1647 return elf_dt_name (abfd
);
1651 /* Get the list of DT_NEEDED entries from a BFD. This is a hook for
1652 the ELF linker emulation code. */
1655 bfd_elf_get_bfd_needed_list (abfd
, pneeded
)
1657 struct bfd_link_needed_list
**pneeded
;
1660 bfd_byte
*dynbuf
= NULL
;
1662 unsigned long shlink
;
1663 bfd_byte
*extdyn
, *extdynend
;
1665 void (*swap_dyn_in
) PARAMS ((bfd
*, const PTR
, Elf_Internal_Dyn
*));
1669 if (bfd_get_flavour (abfd
) != bfd_target_elf_flavour
1670 || bfd_get_format (abfd
) != bfd_object
)
1673 s
= bfd_get_section_by_name (abfd
, ".dynamic");
1674 if (s
== NULL
|| s
->_raw_size
== 0)
1677 dynbuf
= (bfd_byte
*) bfd_malloc (s
->_raw_size
);
1681 if (! bfd_get_section_contents (abfd
, s
, (PTR
) dynbuf
, (file_ptr
) 0,
1685 elfsec
= _bfd_elf_section_from_bfd_section (abfd
, s
);
1689 shlink
= elf_elfsections (abfd
)[elfsec
]->sh_link
;
1691 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
1692 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
1695 extdynend
= extdyn
+ s
->_raw_size
;
1696 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
1698 Elf_Internal_Dyn dyn
;
1700 (*swap_dyn_in
) (abfd
, (PTR
) extdyn
, &dyn
);
1702 if (dyn
.d_tag
== DT_NULL
)
1705 if (dyn
.d_tag
== DT_NEEDED
)
1708 struct bfd_link_needed_list
*l
;
1709 unsigned int tagv
= dyn
.d_un
.d_val
;
1712 string
= bfd_elf_string_from_elf_section (abfd
, shlink
, tagv
);
1717 l
= (struct bfd_link_needed_list
*) bfd_alloc (abfd
, amt
);
1738 /* Allocate an ELF string table--force the first byte to be zero. */
1740 struct bfd_strtab_hash
*
1741 _bfd_elf_stringtab_init ()
1743 struct bfd_strtab_hash
*ret
;
1745 ret
= _bfd_stringtab_init ();
1750 loc
= _bfd_stringtab_add (ret
, "", TRUE
, FALSE
);
1751 BFD_ASSERT (loc
== 0 || loc
== (bfd_size_type
) -1);
1752 if (loc
== (bfd_size_type
) -1)
1754 _bfd_stringtab_free (ret
);
1761 /* ELF .o/exec file reading */
1763 /* Create a new bfd section from an ELF section header. */
1766 bfd_section_from_shdr (abfd
, shindex
)
1768 unsigned int shindex
;
1770 Elf_Internal_Shdr
*hdr
= elf_elfsections (abfd
)[shindex
];
1771 Elf_Internal_Ehdr
*ehdr
= elf_elfheader (abfd
);
1772 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1775 name
= elf_string_from_elf_strtab (abfd
, hdr
->sh_name
);
1777 switch (hdr
->sh_type
)
1780 /* Inactive section. Throw it away. */
1783 case SHT_PROGBITS
: /* Normal section with contents. */
1784 case SHT_NOBITS
: /* .bss section. */
1785 case SHT_HASH
: /* .hash section. */
1786 case SHT_NOTE
: /* .note section. */
1787 case SHT_INIT_ARRAY
: /* .init_array section. */
1788 case SHT_FINI_ARRAY
: /* .fini_array section. */
1789 case SHT_PREINIT_ARRAY
: /* .preinit_array section. */
1790 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1792 case SHT_DYNAMIC
: /* Dynamic linking information. */
1793 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
))
1795 if (elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
!= SHT_STRTAB
)
1797 Elf_Internal_Shdr
*dynsymhdr
;
1799 /* The shared libraries distributed with hpux11 have a bogus
1800 sh_link field for the ".dynamic" section. Find the
1801 string table for the ".dynsym" section instead. */
1802 if (elf_dynsymtab (abfd
) != 0)
1804 dynsymhdr
= elf_elfsections (abfd
)[elf_dynsymtab (abfd
)];
1805 hdr
->sh_link
= dynsymhdr
->sh_link
;
1809 unsigned int i
, num_sec
;
1811 num_sec
= elf_numsections (abfd
);
1812 for (i
= 1; i
< num_sec
; i
++)
1814 dynsymhdr
= elf_elfsections (abfd
)[i
];
1815 if (dynsymhdr
->sh_type
== SHT_DYNSYM
)
1817 hdr
->sh_link
= dynsymhdr
->sh_link
;
1825 case SHT_SYMTAB
: /* A symbol table */
1826 if (elf_onesymtab (abfd
) == shindex
)
1829 BFD_ASSERT (hdr
->sh_entsize
== bed
->s
->sizeof_sym
);
1830 BFD_ASSERT (elf_onesymtab (abfd
) == 0);
1831 elf_onesymtab (abfd
) = shindex
;
1832 elf_tdata (abfd
)->symtab_hdr
= *hdr
;
1833 elf_elfsections (abfd
)[shindex
] = hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1834 abfd
->flags
|= HAS_SYMS
;
1836 /* Sometimes a shared object will map in the symbol table. If
1837 SHF_ALLOC is set, and this is a shared object, then we also
1838 treat this section as a BFD section. We can not base the
1839 decision purely on SHF_ALLOC, because that flag is sometimes
1840 set in a relocatable object file, which would confuse the
1842 if ((hdr
->sh_flags
& SHF_ALLOC
) != 0
1843 && (abfd
->flags
& DYNAMIC
) != 0
1844 && ! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
))
1849 case SHT_DYNSYM
: /* A dynamic symbol table */
1850 if (elf_dynsymtab (abfd
) == shindex
)
1853 BFD_ASSERT (hdr
->sh_entsize
== bed
->s
->sizeof_sym
);
1854 BFD_ASSERT (elf_dynsymtab (abfd
) == 0);
1855 elf_dynsymtab (abfd
) = shindex
;
1856 elf_tdata (abfd
)->dynsymtab_hdr
= *hdr
;
1857 elf_elfsections (abfd
)[shindex
] = hdr
= &elf_tdata (abfd
)->dynsymtab_hdr
;
1858 abfd
->flags
|= HAS_SYMS
;
1860 /* Besides being a symbol table, we also treat this as a regular
1861 section, so that objcopy can handle it. */
1862 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1864 case SHT_SYMTAB_SHNDX
: /* Symbol section indices when >64k sections */
1865 if (elf_symtab_shndx (abfd
) == shindex
)
1868 /* Get the associated symbol table. */
1869 if (! bfd_section_from_shdr (abfd
, hdr
->sh_link
)
1870 || hdr
->sh_link
!= elf_onesymtab (abfd
))
1873 elf_symtab_shndx (abfd
) = shindex
;
1874 elf_tdata (abfd
)->symtab_shndx_hdr
= *hdr
;
1875 elf_elfsections (abfd
)[shindex
] = &elf_tdata (abfd
)->symtab_shndx_hdr
;
1878 case SHT_STRTAB
: /* A string table */
1879 if (hdr
->bfd_section
!= NULL
)
1881 if (ehdr
->e_shstrndx
== shindex
)
1883 elf_tdata (abfd
)->shstrtab_hdr
= *hdr
;
1884 elf_elfsections (abfd
)[shindex
] = &elf_tdata (abfd
)->shstrtab_hdr
;
1888 unsigned int i
, num_sec
;
1890 num_sec
= elf_numsections (abfd
);
1891 for (i
= 1; i
< num_sec
; i
++)
1893 Elf_Internal_Shdr
*hdr2
= elf_elfsections (abfd
)[i
];
1894 if (hdr2
->sh_link
== shindex
)
1896 if (! bfd_section_from_shdr (abfd
, i
))
1898 if (elf_onesymtab (abfd
) == i
)
1900 elf_tdata (abfd
)->strtab_hdr
= *hdr
;
1901 elf_elfsections (abfd
)[shindex
] =
1902 &elf_tdata (abfd
)->strtab_hdr
;
1905 if (elf_dynsymtab (abfd
) == i
)
1907 elf_tdata (abfd
)->dynstrtab_hdr
= *hdr
;
1908 elf_elfsections (abfd
)[shindex
] = hdr
=
1909 &elf_tdata (abfd
)->dynstrtab_hdr
;
1910 /* We also treat this as a regular section, so
1911 that objcopy can handle it. */
1914 #if 0 /* Not handling other string tables specially right now. */
1915 hdr2
= elf_elfsections (abfd
)[i
]; /* in case it moved */
1916 /* We have a strtab for some random other section. */
1917 newsect
= (asection
*) hdr2
->bfd_section
;
1920 hdr
->bfd_section
= newsect
;
1921 hdr2
= &elf_section_data (newsect
)->str_hdr
;
1923 elf_elfsections (abfd
)[shindex
] = hdr2
;
1929 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1933 /* *These* do a lot of work -- but build no sections! */
1935 asection
*target_sect
;
1936 Elf_Internal_Shdr
*hdr2
;
1937 unsigned int num_sec
= elf_numsections (abfd
);
1939 /* Check for a bogus link to avoid crashing. */
1940 if ((hdr
->sh_link
>= SHN_LORESERVE
&& hdr
->sh_link
<= SHN_HIRESERVE
)
1941 || hdr
->sh_link
>= num_sec
)
1943 ((*_bfd_error_handler
)
1944 (_("%s: invalid link %lu for reloc section %s (index %u)"),
1945 bfd_archive_filename (abfd
), hdr
->sh_link
, name
, shindex
));
1946 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1949 /* For some incomprehensible reason Oracle distributes
1950 libraries for Solaris in which some of the objects have
1951 bogus sh_link fields. It would be nice if we could just
1952 reject them, but, unfortunately, some people need to use
1953 them. We scan through the section headers; if we find only
1954 one suitable symbol table, we clobber the sh_link to point
1955 to it. I hope this doesn't break anything. */
1956 if (elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
!= SHT_SYMTAB
1957 && elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
!= SHT_DYNSYM
)
1963 for (scan
= 1; scan
< num_sec
; scan
++)
1965 if (elf_elfsections (abfd
)[scan
]->sh_type
== SHT_SYMTAB
1966 || elf_elfsections (abfd
)[scan
]->sh_type
== SHT_DYNSYM
)
1977 hdr
->sh_link
= found
;
1980 /* Get the symbol table. */
1981 if (elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
== SHT_SYMTAB
1982 && ! bfd_section_from_shdr (abfd
, hdr
->sh_link
))
1985 /* If this reloc section does not use the main symbol table we
1986 don't treat it as a reloc section. BFD can't adequately
1987 represent such a section, so at least for now, we don't
1988 try. We just present it as a normal section. We also
1989 can't use it as a reloc section if it points to the null
1991 if (hdr
->sh_link
!= elf_onesymtab (abfd
) || hdr
->sh_info
== SHN_UNDEF
)
1992 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1994 if (! bfd_section_from_shdr (abfd
, hdr
->sh_info
))
1996 target_sect
= bfd_section_from_elf_index (abfd
, hdr
->sh_info
);
1997 if (target_sect
== NULL
)
2000 if ((target_sect
->flags
& SEC_RELOC
) == 0
2001 || target_sect
->reloc_count
== 0)
2002 hdr2
= &elf_section_data (target_sect
)->rel_hdr
;
2006 BFD_ASSERT (elf_section_data (target_sect
)->rel_hdr2
== NULL
);
2007 amt
= sizeof (*hdr2
);
2008 hdr2
= (Elf_Internal_Shdr
*) bfd_alloc (abfd
, amt
);
2009 elf_section_data (target_sect
)->rel_hdr2
= hdr2
;
2012 elf_elfsections (abfd
)[shindex
] = hdr2
;
2013 target_sect
->reloc_count
+= NUM_SHDR_ENTRIES (hdr
);
2014 target_sect
->flags
|= SEC_RELOC
;
2015 target_sect
->relocation
= NULL
;
2016 target_sect
->rel_filepos
= hdr
->sh_offset
;
2017 /* In the section to which the relocations apply, mark whether
2018 its relocations are of the REL or RELA variety. */
2019 if (hdr
->sh_size
!= 0)
2020 target_sect
->use_rela_p
= hdr
->sh_type
== SHT_RELA
;
2021 abfd
->flags
|= HAS_RELOC
;
2026 case SHT_GNU_verdef
:
2027 elf_dynverdef (abfd
) = shindex
;
2028 elf_tdata (abfd
)->dynverdef_hdr
= *hdr
;
2029 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
2032 case SHT_GNU_versym
:
2033 elf_dynversym (abfd
) = shindex
;
2034 elf_tdata (abfd
)->dynversym_hdr
= *hdr
;
2035 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
2038 case SHT_GNU_verneed
:
2039 elf_dynverref (abfd
) = shindex
;
2040 elf_tdata (abfd
)->dynverref_hdr
= *hdr
;
2041 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
2048 /* We need a BFD section for objcopy and relocatable linking,
2049 and it's handy to have the signature available as the section
2051 name
= group_signature (abfd
, hdr
);
2054 if (!_bfd_elf_make_section_from_shdr (abfd
, hdr
, name
))
2056 if (hdr
->contents
!= NULL
)
2058 Elf_Internal_Group
*idx
= (Elf_Internal_Group
*) hdr
->contents
;
2059 unsigned int n_elt
= hdr
->sh_size
/ 4;
2062 if (idx
->flags
& GRP_COMDAT
)
2063 hdr
->bfd_section
->flags
2064 |= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_DISCARD
;
2066 while (--n_elt
!= 0)
2067 if ((s
= (++idx
)->shdr
->bfd_section
) != NULL
2068 && elf_next_in_group (s
) != NULL
)
2070 elf_next_in_group (hdr
->bfd_section
) = s
;
2077 /* Check for any processor-specific section types. */
2079 if (bed
->elf_backend_section_from_shdr
)
2080 (*bed
->elf_backend_section_from_shdr
) (abfd
, hdr
, name
);
2088 /* Return the section for the local symbol specified by ABFD, R_SYMNDX.
2089 Return SEC for sections that have no elf section, and NULL on error. */
2092 bfd_section_from_r_symndx (abfd
, cache
, sec
, r_symndx
)
2094 struct sym_sec_cache
*cache
;
2096 unsigned long r_symndx
;
2098 Elf_Internal_Shdr
*symtab_hdr
;
2099 unsigned char esym
[sizeof (Elf64_External_Sym
)];
2100 Elf_External_Sym_Shndx eshndx
;
2101 Elf_Internal_Sym isym
;
2102 unsigned int ent
= r_symndx
% LOCAL_SYM_CACHE_SIZE
;
2104 if (cache
->abfd
== abfd
&& cache
->indx
[ent
] == r_symndx
)
2105 return cache
->sec
[ent
];
2107 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2108 if (bfd_elf_get_elf_syms (abfd
, symtab_hdr
, 1, r_symndx
,
2109 &isym
, esym
, &eshndx
) == NULL
)
2112 if (cache
->abfd
!= abfd
)
2114 memset (cache
->indx
, -1, sizeof (cache
->indx
));
2117 cache
->indx
[ent
] = r_symndx
;
2118 cache
->sec
[ent
] = sec
;
2119 if (isym
.st_shndx
< SHN_LORESERVE
|| isym
.st_shndx
> SHN_HIRESERVE
)
2122 s
= bfd_section_from_elf_index (abfd
, isym
.st_shndx
);
2124 cache
->sec
[ent
] = s
;
2126 return cache
->sec
[ent
];
2129 /* Given an ELF section number, retrieve the corresponding BFD
2133 bfd_section_from_elf_index (abfd
, index
)
2137 if (index
>= elf_numsections (abfd
))
2139 return elf_elfsections (abfd
)[index
]->bfd_section
;
2143 _bfd_elf_new_section_hook (abfd
, sec
)
2147 struct bfd_elf_section_data
*sdata
;
2149 sdata
= (struct bfd_elf_section_data
*) sec
->used_by_bfd
;
2152 bfd_size_type amt
= sizeof (*sdata
);
2153 sdata
= (struct bfd_elf_section_data
*) bfd_zalloc (abfd
, amt
);
2156 sec
->used_by_bfd
= (PTR
) sdata
;
2159 /* Indicate whether or not this section should use RELA relocations. */
2160 sec
->use_rela_p
= get_elf_backend_data (abfd
)->default_use_rela_p
;
2165 /* Create a new bfd section from an ELF program header.
2167 Since program segments have no names, we generate a synthetic name
2168 of the form segment<NUM>, where NUM is generally the index in the
2169 program header table. For segments that are split (see below) we
2170 generate the names segment<NUM>a and segment<NUM>b.
2172 Note that some program segments may have a file size that is different than
2173 (less than) the memory size. All this means is that at execution the
2174 system must allocate the amount of memory specified by the memory size,
2175 but only initialize it with the first "file size" bytes read from the
2176 file. This would occur for example, with program segments consisting
2177 of combined data+bss.
2179 To handle the above situation, this routine generates TWO bfd sections
2180 for the single program segment. The first has the length specified by
2181 the file size of the segment, and the second has the length specified
2182 by the difference between the two sizes. In effect, the segment is split
2183 into it's initialized and uninitialized parts.
2188 _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, typename
)
2190 Elf_Internal_Phdr
*hdr
;
2192 const char *typename
;
2200 split
= ((hdr
->p_memsz
> 0)
2201 && (hdr
->p_filesz
> 0)
2202 && (hdr
->p_memsz
> hdr
->p_filesz
));
2203 sprintf (namebuf
, "%s%d%s", typename
, index
, split
? "a" : "");
2204 len
= strlen (namebuf
) + 1;
2205 name
= bfd_alloc (abfd
, (bfd_size_type
) len
);
2208 memcpy (name
, namebuf
, len
);
2209 newsect
= bfd_make_section (abfd
, name
);
2210 if (newsect
== NULL
)
2212 newsect
->vma
= hdr
->p_vaddr
;
2213 newsect
->lma
= hdr
->p_paddr
;
2214 newsect
->_raw_size
= hdr
->p_filesz
;
2215 newsect
->filepos
= hdr
->p_offset
;
2216 newsect
->flags
|= SEC_HAS_CONTENTS
;
2217 if (hdr
->p_type
== PT_LOAD
)
2219 newsect
->flags
|= SEC_ALLOC
;
2220 newsect
->flags
|= SEC_LOAD
;
2221 if (hdr
->p_flags
& PF_X
)
2223 /* FIXME: all we known is that it has execute PERMISSION,
2225 newsect
->flags
|= SEC_CODE
;
2228 if (!(hdr
->p_flags
& PF_W
))
2230 newsect
->flags
|= SEC_READONLY
;
2235 sprintf (namebuf
, "%s%db", typename
, index
);
2236 len
= strlen (namebuf
) + 1;
2237 name
= bfd_alloc (abfd
, (bfd_size_type
) len
);
2240 memcpy (name
, namebuf
, len
);
2241 newsect
= bfd_make_section (abfd
, name
);
2242 if (newsect
== NULL
)
2244 newsect
->vma
= hdr
->p_vaddr
+ hdr
->p_filesz
;
2245 newsect
->lma
= hdr
->p_paddr
+ hdr
->p_filesz
;
2246 newsect
->_raw_size
= hdr
->p_memsz
- hdr
->p_filesz
;
2247 if (hdr
->p_type
== PT_LOAD
)
2249 newsect
->flags
|= SEC_ALLOC
;
2250 if (hdr
->p_flags
& PF_X
)
2251 newsect
->flags
|= SEC_CODE
;
2253 if (!(hdr
->p_flags
& PF_W
))
2254 newsect
->flags
|= SEC_READONLY
;
2261 bfd_section_from_phdr (abfd
, hdr
, index
)
2263 Elf_Internal_Phdr
*hdr
;
2266 struct elf_backend_data
*bed
;
2268 switch (hdr
->p_type
)
2271 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "null");
2274 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "load");
2277 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "dynamic");
2280 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "interp");
2283 if (! _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "note"))
2285 if (! elfcore_read_notes (abfd
, (file_ptr
) hdr
->p_offset
, hdr
->p_filesz
))
2290 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "shlib");
2293 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "phdr");
2295 case PT_GNU_EH_FRAME
:
2296 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
,
2300 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "stack");
2303 /* Check for any processor-specific program segment types.
2304 If no handler for them, default to making "segment" sections. */
2305 bed
= get_elf_backend_data (abfd
);
2306 if (bed
->elf_backend_section_from_phdr
)
2307 return (*bed
->elf_backend_section_from_phdr
) (abfd
, hdr
, index
);
2309 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "segment");
2313 /* Initialize REL_HDR, the section-header for new section, containing
2314 relocations against ASECT. If USE_RELA_P is TRUE, we use RELA
2315 relocations; otherwise, we use REL relocations. */
2318 _bfd_elf_init_reloc_shdr (abfd
, rel_hdr
, asect
, use_rela_p
)
2320 Elf_Internal_Shdr
*rel_hdr
;
2322 bfd_boolean use_rela_p
;
2325 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2326 bfd_size_type amt
= sizeof ".rela" + strlen (asect
->name
);
2328 name
= bfd_alloc (abfd
, amt
);
2331 sprintf (name
, "%s%s", use_rela_p
? ".rela" : ".rel", asect
->name
);
2333 (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd
), name
,
2335 if (rel_hdr
->sh_name
== (unsigned int) -1)
2337 rel_hdr
->sh_type
= use_rela_p
? SHT_RELA
: SHT_REL
;
2338 rel_hdr
->sh_entsize
= (use_rela_p
2339 ? bed
->s
->sizeof_rela
2340 : bed
->s
->sizeof_rel
);
2341 rel_hdr
->sh_addralign
= 1 << bed
->s
->log_file_align
;
2342 rel_hdr
->sh_flags
= 0;
2343 rel_hdr
->sh_addr
= 0;
2344 rel_hdr
->sh_size
= 0;
2345 rel_hdr
->sh_offset
= 0;
2350 /* Set up an ELF internal section header for a section. */
2353 elf_fake_sections (abfd
, asect
, failedptrarg
)
2358 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2359 bfd_boolean
*failedptr
= (bfd_boolean
*) failedptrarg
;
2360 Elf_Internal_Shdr
*this_hdr
;
2364 /* We already failed; just get out of the bfd_map_over_sections
2369 this_hdr
= &elf_section_data (asect
)->this_hdr
;
2371 this_hdr
->sh_name
= (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd
),
2372 asect
->name
, FALSE
);
2373 if (this_hdr
->sh_name
== (unsigned int) -1)
2379 this_hdr
->sh_flags
= 0;
2381 if ((asect
->flags
& SEC_ALLOC
) != 0
2382 || asect
->user_set_vma
)
2383 this_hdr
->sh_addr
= asect
->vma
;
2385 this_hdr
->sh_addr
= 0;
2387 this_hdr
->sh_offset
= 0;
2388 this_hdr
->sh_size
= asect
->_raw_size
;
2389 this_hdr
->sh_link
= 0;
2390 this_hdr
->sh_addralign
= 1 << asect
->alignment_power
;
2391 /* The sh_entsize and sh_info fields may have been set already by
2392 copy_private_section_data. */
2394 this_hdr
->bfd_section
= asect
;
2395 this_hdr
->contents
= NULL
;
2397 /* FIXME: This should not be based on section names. */
2398 if (strcmp (asect
->name
, ".dynstr") == 0)
2399 this_hdr
->sh_type
= SHT_STRTAB
;
2400 else if (strcmp (asect
->name
, ".hash") == 0)
2402 this_hdr
->sh_type
= SHT_HASH
;
2403 this_hdr
->sh_entsize
= bed
->s
->sizeof_hash_entry
;
2405 else if (strcmp (asect
->name
, ".dynsym") == 0)
2407 this_hdr
->sh_type
= SHT_DYNSYM
;
2408 this_hdr
->sh_entsize
= bed
->s
->sizeof_sym
;
2410 else if (strcmp (asect
->name
, ".dynamic") == 0)
2412 this_hdr
->sh_type
= SHT_DYNAMIC
;
2413 this_hdr
->sh_entsize
= bed
->s
->sizeof_dyn
;
2415 else if (strncmp (asect
->name
, ".rela", 5) == 0
2416 && get_elf_backend_data (abfd
)->may_use_rela_p
)
2418 this_hdr
->sh_type
= SHT_RELA
;
2419 this_hdr
->sh_entsize
= bed
->s
->sizeof_rela
;
2421 else if (strncmp (asect
->name
, ".rel", 4) == 0
2422 && get_elf_backend_data (abfd
)->may_use_rel_p
)
2424 this_hdr
->sh_type
= SHT_REL
;
2425 this_hdr
->sh_entsize
= bed
->s
->sizeof_rel
;
2427 else if (strcmp (asect
->name
, ".init_array") == 0)
2428 this_hdr
->sh_type
= SHT_INIT_ARRAY
;
2429 else if (strcmp (asect
->name
, ".fini_array") == 0)
2430 this_hdr
->sh_type
= SHT_FINI_ARRAY
;
2431 else if (strcmp (asect
->name
, ".preinit_array") == 0)
2432 this_hdr
->sh_type
= SHT_PREINIT_ARRAY
;
2433 else if (strncmp (asect
->name
, ".note", 5) == 0)
2434 this_hdr
->sh_type
= SHT_NOTE
;
2435 else if (strncmp (asect
->name
, ".stab", 5) == 0
2436 && strcmp (asect
->name
+ strlen (asect
->name
) - 3, "str") == 0)
2437 this_hdr
->sh_type
= SHT_STRTAB
;
2438 else if (strcmp (asect
->name
, ".gnu.version") == 0)
2440 this_hdr
->sh_type
= SHT_GNU_versym
;
2441 this_hdr
->sh_entsize
= sizeof (Elf_External_Versym
);
2443 else if (strcmp (asect
->name
, ".gnu.version_d") == 0)
2445 this_hdr
->sh_type
= SHT_GNU_verdef
;
2446 this_hdr
->sh_entsize
= 0;
2447 /* objcopy or strip will copy over sh_info, but may not set
2448 cverdefs. The linker will set cverdefs, but sh_info will be
2450 if (this_hdr
->sh_info
== 0)
2451 this_hdr
->sh_info
= elf_tdata (abfd
)->cverdefs
;
2453 BFD_ASSERT (elf_tdata (abfd
)->cverdefs
== 0
2454 || this_hdr
->sh_info
== elf_tdata (abfd
)->cverdefs
);
2456 else if (strcmp (asect
->name
, ".gnu.version_r") == 0)
2458 this_hdr
->sh_type
= SHT_GNU_verneed
;
2459 this_hdr
->sh_entsize
= 0;
2460 /* objcopy or strip will copy over sh_info, but may not set
2461 cverrefs. The linker will set cverrefs, but sh_info will be
2463 if (this_hdr
->sh_info
== 0)
2464 this_hdr
->sh_info
= elf_tdata (abfd
)->cverrefs
;
2466 BFD_ASSERT (elf_tdata (abfd
)->cverrefs
== 0
2467 || this_hdr
->sh_info
== elf_tdata (abfd
)->cverrefs
);
2469 else if ((asect
->flags
& SEC_GROUP
) != 0)
2471 this_hdr
->sh_type
= SHT_GROUP
;
2472 this_hdr
->sh_entsize
= 4;
2474 else if ((asect
->flags
& SEC_ALLOC
) != 0
2475 && (((asect
->flags
& (SEC_LOAD
| SEC_HAS_CONTENTS
)) == 0)
2476 || (asect
->flags
& SEC_NEVER_LOAD
) != 0))
2477 this_hdr
->sh_type
= SHT_NOBITS
;
2479 this_hdr
->sh_type
= SHT_PROGBITS
;
2481 if ((asect
->flags
& SEC_ALLOC
) != 0)
2482 this_hdr
->sh_flags
|= SHF_ALLOC
;
2483 if ((asect
->flags
& SEC_READONLY
) == 0)
2484 this_hdr
->sh_flags
|= SHF_WRITE
;
2485 if ((asect
->flags
& SEC_CODE
) != 0)
2486 this_hdr
->sh_flags
|= SHF_EXECINSTR
;
2487 if ((asect
->flags
& SEC_MERGE
) != 0)
2489 this_hdr
->sh_flags
|= SHF_MERGE
;
2490 this_hdr
->sh_entsize
= asect
->entsize
;
2491 if ((asect
->flags
& SEC_STRINGS
) != 0)
2492 this_hdr
->sh_flags
|= SHF_STRINGS
;
2494 if ((asect
->flags
& SEC_GROUP
) == 0 && elf_group_name (asect
) != NULL
)
2495 this_hdr
->sh_flags
|= SHF_GROUP
;
2496 if ((asect
->flags
& SEC_THREAD_LOCAL
) != 0)
2498 this_hdr
->sh_flags
|= SHF_TLS
;
2499 if (asect
->_raw_size
== 0 && (asect
->flags
& SEC_HAS_CONTENTS
) == 0)
2501 struct bfd_link_order
*o
;
2503 this_hdr
->sh_size
= 0;
2504 for (o
= asect
->link_order_head
; o
!= NULL
; o
= o
->next
)
2505 if (this_hdr
->sh_size
< o
->offset
+ o
->size
)
2506 this_hdr
->sh_size
= o
->offset
+ o
->size
;
2507 if (this_hdr
->sh_size
)
2508 this_hdr
->sh_type
= SHT_NOBITS
;
2512 /* Check for processor-specific section types. */
2513 if (bed
->elf_backend_fake_sections
2514 && !(*bed
->elf_backend_fake_sections
) (abfd
, this_hdr
, asect
))
2517 /* If the section has relocs, set up a section header for the
2518 SHT_REL[A] section. If two relocation sections are required for
2519 this section, it is up to the processor-specific back-end to
2520 create the other. */
2521 if ((asect
->flags
& SEC_RELOC
) != 0
2522 && !_bfd_elf_init_reloc_shdr (abfd
,
2523 &elf_section_data (asect
)->rel_hdr
,
2529 /* Fill in the contents of a SHT_GROUP section. */
2532 bfd_elf_set_group_contents (abfd
, sec
, failedptrarg
)
2537 bfd_boolean
*failedptr
= (bfd_boolean
*) failedptrarg
;
2538 unsigned long symindx
;
2539 asection
*elt
, *first
;
2541 struct bfd_link_order
*l
;
2544 if (elf_section_data (sec
)->this_hdr
.sh_type
!= SHT_GROUP
2549 if (elf_group_id (sec
) != NULL
)
2550 symindx
= elf_group_id (sec
)->udata
.i
;
2554 /* If called from the assembler, swap_out_syms will have set up
2555 elf_section_syms; If called for "ld -r", use target_index. */
2556 if (elf_section_syms (abfd
) != NULL
)
2557 symindx
= elf_section_syms (abfd
)[sec
->index
]->udata
.i
;
2559 symindx
= sec
->target_index
;
2561 elf_section_data (sec
)->this_hdr
.sh_info
= symindx
;
2563 /* The contents won't be allocated for "ld -r" or objcopy. */
2565 if (sec
->contents
== NULL
)
2568 sec
->contents
= bfd_alloc (abfd
, sec
->_raw_size
);
2570 /* Arrange for the section to be written out. */
2571 elf_section_data (sec
)->this_hdr
.contents
= sec
->contents
;
2572 if (sec
->contents
== NULL
)
2579 loc
= sec
->contents
+ sec
->_raw_size
;
2581 /* Get the pointer to the first section in the group that gas
2582 squirreled away here. objcopy arranges for this to be set to the
2583 start of the input section group. */
2584 first
= elt
= elf_next_in_group (sec
);
2586 /* First element is a flag word. Rest of section is elf section
2587 indices for all the sections of the group. Write them backwards
2588 just to keep the group in the same order as given in .section
2589 directives, not that it matters. */
2598 s
= s
->output_section
;
2601 idx
= elf_section_data (s
)->this_idx
;
2602 H_PUT_32 (abfd
, idx
, loc
);
2603 elt
= elf_next_in_group (elt
);
2608 /* If this is a relocatable link, then the above did nothing because
2609 SEC is the output section. Look through the input sections
2611 for (l
= sec
->link_order_head
; l
!= NULL
; l
= l
->next
)
2612 if (l
->type
== bfd_indirect_link_order
2613 && (elt
= elf_next_in_group (l
->u
.indirect
.section
)) != NULL
)
2618 elf_section_data (elt
->output_section
)->this_idx
, loc
);
2619 elt
= elf_next_in_group (elt
);
2620 /* During a relocatable link, the lists are circular. */
2622 while (elt
!= elf_next_in_group (l
->u
.indirect
.section
));
2624 /* With ld -r, merging SHT_GROUP sections results in wasted space
2625 due to allowing for the flag word on each input. We may well
2626 duplicate entries too. */
2627 while ((loc
-= 4) > sec
->contents
)
2628 H_PUT_32 (abfd
, 0, loc
);
2630 if (loc
!= sec
->contents
)
2633 H_PUT_32 (abfd
, sec
->flags
& SEC_LINK_ONCE
? GRP_COMDAT
: 0, loc
);
2636 /* Assign all ELF section numbers. The dummy first section is handled here
2637 too. The link/info pointers for the standard section types are filled
2638 in here too, while we're at it. */
2641 assign_section_numbers (abfd
)
2644 struct elf_obj_tdata
*t
= elf_tdata (abfd
);
2646 unsigned int section_number
, secn
;
2647 Elf_Internal_Shdr
**i_shdrp
;
2652 _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd
));
2654 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
2656 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
2658 if (section_number
== SHN_LORESERVE
)
2659 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2660 d
->this_idx
= section_number
++;
2661 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), d
->this_hdr
.sh_name
);
2662 if ((sec
->flags
& SEC_RELOC
) == 0)
2666 if (section_number
== SHN_LORESERVE
)
2667 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2668 d
->rel_idx
= section_number
++;
2669 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), d
->rel_hdr
.sh_name
);
2674 if (section_number
== SHN_LORESERVE
)
2675 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2676 d
->rel_idx2
= section_number
++;
2677 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), d
->rel_hdr2
->sh_name
);
2683 if (section_number
== SHN_LORESERVE
)
2684 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2685 t
->shstrtab_section
= section_number
++;
2686 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), t
->shstrtab_hdr
.sh_name
);
2687 elf_elfheader (abfd
)->e_shstrndx
= t
->shstrtab_section
;
2689 if (bfd_get_symcount (abfd
) > 0)
2691 if (section_number
== SHN_LORESERVE
)
2692 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2693 t
->symtab_section
= section_number
++;
2694 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), t
->symtab_hdr
.sh_name
);
2695 if (section_number
> SHN_LORESERVE
- 2)
2697 if (section_number
== SHN_LORESERVE
)
2698 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2699 t
->symtab_shndx_section
= section_number
++;
2700 t
->symtab_shndx_hdr
.sh_name
2701 = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd
),
2702 ".symtab_shndx", FALSE
);
2703 if (t
->symtab_shndx_hdr
.sh_name
== (unsigned int) -1)
2706 if (section_number
== SHN_LORESERVE
)
2707 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2708 t
->strtab_section
= section_number
++;
2709 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), t
->strtab_hdr
.sh_name
);
2712 _bfd_elf_strtab_finalize (elf_shstrtab (abfd
));
2713 t
->shstrtab_hdr
.sh_size
= _bfd_elf_strtab_size (elf_shstrtab (abfd
));
2715 elf_numsections (abfd
) = section_number
;
2716 elf_elfheader (abfd
)->e_shnum
= section_number
;
2717 if (section_number
> SHN_LORESERVE
)
2718 elf_elfheader (abfd
)->e_shnum
-= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2720 /* Set up the list of section header pointers, in agreement with the
2722 amt
= section_number
* sizeof (Elf_Internal_Shdr
*);
2723 i_shdrp
= (Elf_Internal_Shdr
**) bfd_zalloc (abfd
, amt
);
2724 if (i_shdrp
== NULL
)
2727 amt
= sizeof (Elf_Internal_Shdr
);
2728 i_shdrp
[0] = (Elf_Internal_Shdr
*) bfd_zalloc (abfd
, amt
);
2729 if (i_shdrp
[0] == NULL
)
2731 bfd_release (abfd
, i_shdrp
);
2735 elf_elfsections (abfd
) = i_shdrp
;
2737 i_shdrp
[t
->shstrtab_section
] = &t
->shstrtab_hdr
;
2738 if (bfd_get_symcount (abfd
) > 0)
2740 i_shdrp
[t
->symtab_section
] = &t
->symtab_hdr
;
2741 if (elf_numsections (abfd
) > SHN_LORESERVE
)
2743 i_shdrp
[t
->symtab_shndx_section
] = &t
->symtab_shndx_hdr
;
2744 t
->symtab_shndx_hdr
.sh_link
= t
->symtab_section
;
2746 i_shdrp
[t
->strtab_section
] = &t
->strtab_hdr
;
2747 t
->symtab_hdr
.sh_link
= t
->strtab_section
;
2749 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
2751 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
2755 i_shdrp
[d
->this_idx
] = &d
->this_hdr
;
2756 if (d
->rel_idx
!= 0)
2757 i_shdrp
[d
->rel_idx
] = &d
->rel_hdr
;
2758 if (d
->rel_idx2
!= 0)
2759 i_shdrp
[d
->rel_idx2
] = d
->rel_hdr2
;
2761 /* Fill in the sh_link and sh_info fields while we're at it. */
2763 /* sh_link of a reloc section is the section index of the symbol
2764 table. sh_info is the section index of the section to which
2765 the relocation entries apply. */
2766 if (d
->rel_idx
!= 0)
2768 d
->rel_hdr
.sh_link
= t
->symtab_section
;
2769 d
->rel_hdr
.sh_info
= d
->this_idx
;
2771 if (d
->rel_idx2
!= 0)
2773 d
->rel_hdr2
->sh_link
= t
->symtab_section
;
2774 d
->rel_hdr2
->sh_info
= d
->this_idx
;
2777 switch (d
->this_hdr
.sh_type
)
2781 /* A reloc section which we are treating as a normal BFD
2782 section. sh_link is the section index of the symbol
2783 table. sh_info is the section index of the section to
2784 which the relocation entries apply. We assume that an
2785 allocated reloc section uses the dynamic symbol table.
2786 FIXME: How can we be sure? */
2787 s
= bfd_get_section_by_name (abfd
, ".dynsym");
2789 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
2791 /* We look up the section the relocs apply to by name. */
2793 if (d
->this_hdr
.sh_type
== SHT_REL
)
2797 s
= bfd_get_section_by_name (abfd
, name
);
2799 d
->this_hdr
.sh_info
= elf_section_data (s
)->this_idx
;
2803 /* We assume that a section named .stab*str is a stabs
2804 string section. We look for a section with the same name
2805 but without the trailing ``str'', and set its sh_link
2806 field to point to this section. */
2807 if (strncmp (sec
->name
, ".stab", sizeof ".stab" - 1) == 0
2808 && strcmp (sec
->name
+ strlen (sec
->name
) - 3, "str") == 0)
2813 len
= strlen (sec
->name
);
2814 alc
= (char *) bfd_malloc ((bfd_size_type
) (len
- 2));
2817 memcpy (alc
, sec
->name
, len
- 3);
2818 alc
[len
- 3] = '\0';
2819 s
= bfd_get_section_by_name (abfd
, alc
);
2823 elf_section_data (s
)->this_hdr
.sh_link
= d
->this_idx
;
2825 /* This is a .stab section. */
2826 if (elf_section_data (s
)->this_hdr
.sh_entsize
== 0)
2827 elf_section_data (s
)->this_hdr
.sh_entsize
2828 = 4 + 2 * bfd_get_arch_size (abfd
) / 8;
2835 case SHT_GNU_verneed
:
2836 case SHT_GNU_verdef
:
2837 /* sh_link is the section header index of the string table
2838 used for the dynamic entries, or the symbol table, or the
2840 s
= bfd_get_section_by_name (abfd
, ".dynstr");
2842 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
2846 case SHT_GNU_versym
:
2847 /* sh_link is the section header index of the symbol table
2848 this hash table or version table is for. */
2849 s
= bfd_get_section_by_name (abfd
, ".dynsym");
2851 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
2855 d
->this_hdr
.sh_link
= t
->symtab_section
;
2859 for (secn
= 1; secn
< section_number
; ++secn
)
2860 if (i_shdrp
[secn
] == NULL
)
2861 i_shdrp
[secn
] = i_shdrp
[0];
2863 i_shdrp
[secn
]->sh_name
= _bfd_elf_strtab_offset (elf_shstrtab (abfd
),
2864 i_shdrp
[secn
]->sh_name
);
2868 /* Map symbol from it's internal number to the external number, moving
2869 all local symbols to be at the head of the list. */
2872 sym_is_global (abfd
, sym
)
2876 /* If the backend has a special mapping, use it. */
2877 if (get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
2878 return ((*get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
2881 return ((sym
->flags
& (BSF_GLOBAL
| BSF_WEAK
)) != 0
2882 || bfd_is_und_section (bfd_get_section (sym
))
2883 || bfd_is_com_section (bfd_get_section (sym
)));
2887 elf_map_symbols (abfd
)
2890 unsigned int symcount
= bfd_get_symcount (abfd
);
2891 asymbol
**syms
= bfd_get_outsymbols (abfd
);
2892 asymbol
**sect_syms
;
2893 unsigned int num_locals
= 0;
2894 unsigned int num_globals
= 0;
2895 unsigned int num_locals2
= 0;
2896 unsigned int num_globals2
= 0;
2904 fprintf (stderr
, "elf_map_symbols\n");
2908 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2910 if (max_index
< asect
->index
)
2911 max_index
= asect
->index
;
2915 amt
= max_index
* sizeof (asymbol
*);
2916 sect_syms
= (asymbol
**) bfd_zalloc (abfd
, amt
);
2917 if (sect_syms
== NULL
)
2919 elf_section_syms (abfd
) = sect_syms
;
2920 elf_num_section_syms (abfd
) = max_index
;
2922 /* Init sect_syms entries for any section symbols we have already
2923 decided to output. */
2924 for (idx
= 0; idx
< symcount
; idx
++)
2926 asymbol
*sym
= syms
[idx
];
2928 if ((sym
->flags
& BSF_SECTION_SYM
) != 0
2935 if (sec
->owner
!= NULL
)
2937 if (sec
->owner
!= abfd
)
2939 if (sec
->output_offset
!= 0)
2942 sec
= sec
->output_section
;
2944 /* Empty sections in the input files may have had a
2945 section symbol created for them. (See the comment
2946 near the end of _bfd_generic_link_output_symbols in
2947 linker.c). If the linker script discards such
2948 sections then we will reach this point. Since we know
2949 that we cannot avoid this case, we detect it and skip
2950 the abort and the assignment to the sect_syms array.
2951 To reproduce this particular case try running the
2952 linker testsuite test ld-scripts/weak.exp for an ELF
2953 port that uses the generic linker. */
2954 if (sec
->owner
== NULL
)
2957 BFD_ASSERT (sec
->owner
== abfd
);
2959 sect_syms
[sec
->index
] = syms
[idx
];
2964 /* Classify all of the symbols. */
2965 for (idx
= 0; idx
< symcount
; idx
++)
2967 if (!sym_is_global (abfd
, syms
[idx
]))
2973 /* We will be adding a section symbol for each BFD section. Most normal
2974 sections will already have a section symbol in outsymbols, but
2975 eg. SHT_GROUP sections will not, and we need the section symbol mapped
2976 at least in that case. */
2977 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2979 if (sect_syms
[asect
->index
] == NULL
)
2981 if (!sym_is_global (abfd
, asect
->symbol
))
2988 /* Now sort the symbols so the local symbols are first. */
2989 amt
= (num_locals
+ num_globals
) * sizeof (asymbol
*);
2990 new_syms
= (asymbol
**) bfd_alloc (abfd
, amt
);
2992 if (new_syms
== NULL
)
2995 for (idx
= 0; idx
< symcount
; idx
++)
2997 asymbol
*sym
= syms
[idx
];
3000 if (!sym_is_global (abfd
, sym
))
3003 i
= num_locals
+ num_globals2
++;
3005 sym
->udata
.i
= i
+ 1;
3007 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
3009 if (sect_syms
[asect
->index
] == NULL
)
3011 asymbol
*sym
= asect
->symbol
;
3014 sect_syms
[asect
->index
] = sym
;
3015 if (!sym_is_global (abfd
, sym
))
3018 i
= num_locals
+ num_globals2
++;
3020 sym
->udata
.i
= i
+ 1;
3024 bfd_set_symtab (abfd
, new_syms
, num_locals
+ num_globals
);
3026 elf_num_locals (abfd
) = num_locals
;
3027 elf_num_globals (abfd
) = num_globals
;
3031 /* Align to the maximum file alignment that could be required for any
3032 ELF data structure. */
3034 static INLINE file_ptr align_file_position
3035 PARAMS ((file_ptr
, int));
3036 static INLINE file_ptr
3037 align_file_position (off
, align
)
3041 return (off
+ align
- 1) & ~(align
- 1);
3044 /* Assign a file position to a section, optionally aligning to the
3045 required section alignment. */
3048 _bfd_elf_assign_file_position_for_section (i_shdrp
, offset
, align
)
3049 Elf_Internal_Shdr
*i_shdrp
;
3057 al
= i_shdrp
->sh_addralign
;
3059 offset
= BFD_ALIGN (offset
, al
);
3061 i_shdrp
->sh_offset
= offset
;
3062 if (i_shdrp
->bfd_section
!= NULL
)
3063 i_shdrp
->bfd_section
->filepos
= offset
;
3064 if (i_shdrp
->sh_type
!= SHT_NOBITS
)
3065 offset
+= i_shdrp
->sh_size
;
3069 /* Compute the file positions we are going to put the sections at, and
3070 otherwise prepare to begin writing out the ELF file. If LINK_INFO
3071 is not NULL, this is being called by the ELF backend linker. */
3074 _bfd_elf_compute_section_file_positions (abfd
, link_info
)
3076 struct bfd_link_info
*link_info
;
3078 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3080 struct bfd_strtab_hash
*strtab
;
3081 Elf_Internal_Shdr
*shstrtab_hdr
;
3083 if (abfd
->output_has_begun
)
3086 /* Do any elf backend specific processing first. */
3087 if (bed
->elf_backend_begin_write_processing
)
3088 (*bed
->elf_backend_begin_write_processing
) (abfd
, link_info
);
3090 if (! prep_headers (abfd
))
3093 /* Post process the headers if necessary. */
3094 if (bed
->elf_backend_post_process_headers
)
3095 (*bed
->elf_backend_post_process_headers
) (abfd
, link_info
);
3098 bfd_map_over_sections (abfd
, elf_fake_sections
, &failed
);
3102 if (!assign_section_numbers (abfd
))
3105 /* The backend linker builds symbol table information itself. */
3106 if (link_info
== NULL
&& bfd_get_symcount (abfd
) > 0)
3108 /* Non-zero if doing a relocatable link. */
3109 int relocatable_p
= ! (abfd
->flags
& (EXEC_P
| DYNAMIC
));
3111 if (! swap_out_syms (abfd
, &strtab
, relocatable_p
))
3115 if (link_info
== NULL
)
3117 bfd_map_over_sections (abfd
, bfd_elf_set_group_contents
, &failed
);
3122 shstrtab_hdr
= &elf_tdata (abfd
)->shstrtab_hdr
;
3123 /* sh_name was set in prep_headers. */
3124 shstrtab_hdr
->sh_type
= SHT_STRTAB
;
3125 shstrtab_hdr
->sh_flags
= 0;
3126 shstrtab_hdr
->sh_addr
= 0;
3127 shstrtab_hdr
->sh_size
= _bfd_elf_strtab_size (elf_shstrtab (abfd
));
3128 shstrtab_hdr
->sh_entsize
= 0;
3129 shstrtab_hdr
->sh_link
= 0;
3130 shstrtab_hdr
->sh_info
= 0;
3131 /* sh_offset is set in assign_file_positions_except_relocs. */
3132 shstrtab_hdr
->sh_addralign
= 1;
3134 if (!assign_file_positions_except_relocs (abfd
))
3137 if (link_info
== NULL
&& bfd_get_symcount (abfd
) > 0)
3140 Elf_Internal_Shdr
*hdr
;
3142 off
= elf_tdata (abfd
)->next_file_pos
;
3144 hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3145 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, TRUE
);
3147 hdr
= &elf_tdata (abfd
)->symtab_shndx_hdr
;
3148 if (hdr
->sh_size
!= 0)
3149 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, TRUE
);
3151 hdr
= &elf_tdata (abfd
)->strtab_hdr
;
3152 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, TRUE
);
3154 elf_tdata (abfd
)->next_file_pos
= off
;
3156 /* Now that we know where the .strtab section goes, write it
3158 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
3159 || ! _bfd_stringtab_emit (abfd
, strtab
))
3161 _bfd_stringtab_free (strtab
);
3164 abfd
->output_has_begun
= TRUE
;
3169 /* Create a mapping from a set of sections to a program segment. */
3171 static INLINE
struct elf_segment_map
*
3172 make_mapping (abfd
, sections
, from
, to
, phdr
)
3174 asection
**sections
;
3179 struct elf_segment_map
*m
;
3184 amt
= sizeof (struct elf_segment_map
);
3185 amt
+= (to
- from
- 1) * sizeof (asection
*);
3186 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
3190 m
->p_type
= PT_LOAD
;
3191 for (i
= from
, hdrpp
= sections
+ from
; i
< to
; i
++, hdrpp
++)
3192 m
->sections
[i
- from
] = *hdrpp
;
3193 m
->count
= to
- from
;
3195 if (from
== 0 && phdr
)
3197 /* Include the headers in the first PT_LOAD segment. */
3198 m
->includes_filehdr
= 1;
3199 m
->includes_phdrs
= 1;
3205 /* Set up a mapping from BFD sections to program segments. */
3208 map_sections_to_segments (abfd
)
3211 asection
**sections
= NULL
;
3215 struct elf_segment_map
*mfirst
;
3216 struct elf_segment_map
**pm
;
3217 struct elf_segment_map
*m
;
3219 unsigned int phdr_index
;
3220 bfd_vma maxpagesize
;
3222 bfd_boolean phdr_in_segment
= TRUE
;
3223 bfd_boolean writable
;
3225 asection
*first_tls
= NULL
;
3226 asection
*dynsec
, *eh_frame_hdr
;
3229 if (elf_tdata (abfd
)->segment_map
!= NULL
)
3232 if (bfd_count_sections (abfd
) == 0)
3235 /* Select the allocated sections, and sort them. */
3237 amt
= bfd_count_sections (abfd
) * sizeof (asection
*);
3238 sections
= (asection
**) bfd_malloc (amt
);
3239 if (sections
== NULL
)
3243 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
3245 if ((s
->flags
& SEC_ALLOC
) != 0)
3251 BFD_ASSERT (i
<= bfd_count_sections (abfd
));
3254 qsort (sections
, (size_t) count
, sizeof (asection
*), elf_sort_sections
);
3256 /* Build the mapping. */
3261 /* If we have a .interp section, then create a PT_PHDR segment for
3262 the program headers and a PT_INTERP segment for the .interp
3264 s
= bfd_get_section_by_name (abfd
, ".interp");
3265 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
3267 amt
= sizeof (struct elf_segment_map
);
3268 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
3272 m
->p_type
= PT_PHDR
;
3273 /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */
3274 m
->p_flags
= PF_R
| PF_X
;
3275 m
->p_flags_valid
= 1;
3276 m
->includes_phdrs
= 1;
3281 amt
= sizeof (struct elf_segment_map
);
3282 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
3286 m
->p_type
= PT_INTERP
;
3294 /* Look through the sections. We put sections in the same program
3295 segment when the start of the second section can be placed within
3296 a few bytes of the end of the first section. */
3299 maxpagesize
= get_elf_backend_data (abfd
)->maxpagesize
;
3301 dynsec
= bfd_get_section_by_name (abfd
, ".dynamic");
3303 && (dynsec
->flags
& SEC_LOAD
) == 0)
3306 /* Deal with -Ttext or something similar such that the first section
3307 is not adjacent to the program headers. This is an
3308 approximation, since at this point we don't know exactly how many
3309 program headers we will need. */
3312 bfd_size_type phdr_size
;
3314 phdr_size
= elf_tdata (abfd
)->program_header_size
;
3316 phdr_size
= get_elf_backend_data (abfd
)->s
->sizeof_phdr
;
3317 if ((abfd
->flags
& D_PAGED
) == 0
3318 || sections
[0]->lma
< phdr_size
3319 || sections
[0]->lma
% maxpagesize
< phdr_size
% maxpagesize
)
3320 phdr_in_segment
= FALSE
;
3323 for (i
= 0, hdrpp
= sections
; i
< count
; i
++, hdrpp
++)
3326 bfd_boolean new_segment
;
3330 /* See if this section and the last one will fit in the same
3333 if (last_hdr
== NULL
)
3335 /* If we don't have a segment yet, then we don't need a new
3336 one (we build the last one after this loop). */
3337 new_segment
= FALSE
;
3339 else if (last_hdr
->lma
- last_hdr
->vma
!= hdr
->lma
- hdr
->vma
)
3341 /* If this section has a different relation between the
3342 virtual address and the load address, then we need a new
3346 else if (BFD_ALIGN (last_hdr
->lma
+ last_hdr
->_raw_size
, maxpagesize
)
3347 < BFD_ALIGN (hdr
->lma
, maxpagesize
))
3349 /* If putting this section in this segment would force us to
3350 skip a page in the segment, then we need a new segment. */
3353 else if ((last_hdr
->flags
& SEC_LOAD
) == 0
3354 && (hdr
->flags
& SEC_LOAD
) != 0)
3356 /* We don't want to put a loadable section after a
3357 nonloadable section in the same segment. */
3360 else if ((abfd
->flags
& D_PAGED
) == 0)
3362 /* If the file is not demand paged, which means that we
3363 don't require the sections to be correctly aligned in the
3364 file, then there is no other reason for a new segment. */
3365 new_segment
= FALSE
;
3368 && (hdr
->flags
& SEC_READONLY
) == 0
3369 && (((last_hdr
->lma
+ last_hdr
->_raw_size
- 1)
3370 & ~(maxpagesize
- 1))
3371 != (hdr
->lma
& ~(maxpagesize
- 1))))
3373 /* We don't want to put a writable section in a read only
3374 segment, unless they are on the same page in memory
3375 anyhow. We already know that the last section does not
3376 bring us past the current section on the page, so the
3377 only case in which the new section is not on the same
3378 page as the previous section is when the previous section
3379 ends precisely on a page boundary. */
3384 /* Otherwise, we can use the same segment. */
3385 new_segment
= FALSE
;
3390 if ((hdr
->flags
& SEC_READONLY
) == 0)
3396 /* We need a new program segment. We must create a new program
3397 header holding all the sections from phdr_index until hdr. */
3399 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_segment
);
3406 if ((hdr
->flags
& SEC_READONLY
) == 0)
3413 phdr_in_segment
= FALSE
;
3416 /* Create a final PT_LOAD program segment. */
3417 if (last_hdr
!= NULL
)
3419 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_segment
);
3427 /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */
3430 amt
= sizeof (struct elf_segment_map
);
3431 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
3435 m
->p_type
= PT_DYNAMIC
;
3437 m
->sections
[0] = dynsec
;
3443 /* For each loadable .note section, add a PT_NOTE segment. We don't
3444 use bfd_get_section_by_name, because if we link together
3445 nonloadable .note sections and loadable .note sections, we will
3446 generate two .note sections in the output file. FIXME: Using
3447 names for section types is bogus anyhow. */
3448 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
3450 if ((s
->flags
& SEC_LOAD
) != 0
3451 && strncmp (s
->name
, ".note", 5) == 0)
3453 amt
= sizeof (struct elf_segment_map
);
3454 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
3458 m
->p_type
= PT_NOTE
;
3465 if (s
->flags
& SEC_THREAD_LOCAL
)
3473 /* If there are any SHF_TLS output sections, add PT_TLS segment. */
3478 amt
= sizeof (struct elf_segment_map
);
3479 amt
+= (tls_count
- 1) * sizeof (asection
*);
3480 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
3485 m
->count
= tls_count
;
3486 /* Mandated PF_R. */
3488 m
->p_flags_valid
= 1;
3489 for (i
= 0; i
< tls_count
; ++i
)
3491 BFD_ASSERT (first_tls
->flags
& SEC_THREAD_LOCAL
);
3492 m
->sections
[i
] = first_tls
;
3493 first_tls
= first_tls
->next
;
3500 /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME
3502 eh_frame_hdr
= elf_tdata (abfd
)->eh_frame_hdr
;
3503 if (eh_frame_hdr
!= NULL
3504 && (eh_frame_hdr
->output_section
->flags
& SEC_LOAD
) != 0)
3506 amt
= sizeof (struct elf_segment_map
);
3507 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
3511 m
->p_type
= PT_GNU_EH_FRAME
;
3513 m
->sections
[0] = eh_frame_hdr
->output_section
;
3519 if (elf_tdata (abfd
)->stack_flags
)
3521 amt
= sizeof (struct elf_segment_map
);
3522 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
3526 m
->p_type
= PT_GNU_STACK
;
3527 m
->p_flags
= elf_tdata (abfd
)->stack_flags
;
3528 m
->p_flags_valid
= 1;
3537 elf_tdata (abfd
)->segment_map
= mfirst
;
3541 if (sections
!= NULL
)
3546 /* Sort sections by address. */
3549 elf_sort_sections (arg1
, arg2
)
3553 const asection
*sec1
= *(const asection
**) arg1
;
3554 const asection
*sec2
= *(const asection
**) arg2
;
3555 bfd_size_type size1
, size2
;
3557 /* Sort by LMA first, since this is the address used to
3558 place the section into a segment. */
3559 if (sec1
->lma
< sec2
->lma
)
3561 else if (sec1
->lma
> sec2
->lma
)
3564 /* Then sort by VMA. Normally the LMA and the VMA will be
3565 the same, and this will do nothing. */
3566 if (sec1
->vma
< sec2
->vma
)
3568 else if (sec1
->vma
> sec2
->vma
)
3571 /* Put !SEC_LOAD sections after SEC_LOAD ones. */
3573 #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0)
3579 /* If the indicies are the same, do not return 0
3580 here, but continue to try the next comparison. */
3581 if (sec1
->target_index
- sec2
->target_index
!= 0)
3582 return sec1
->target_index
- sec2
->target_index
;
3587 else if (TOEND (sec2
))
3592 /* Sort by size, to put zero sized sections
3593 before others at the same address. */
3595 size1
= (sec1
->flags
& SEC_LOAD
) ? sec1
->_raw_size
: 0;
3596 size2
= (sec2
->flags
& SEC_LOAD
) ? sec2
->_raw_size
: 0;
3603 return sec1
->target_index
- sec2
->target_index
;
3606 /* Assign file positions to the sections based on the mapping from
3607 sections to segments. This function also sets up some fields in
3608 the file header, and writes out the program headers. */
3611 assign_file_positions_for_segments (abfd
)
3614 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3616 struct elf_segment_map
*m
;
3618 Elf_Internal_Phdr
*phdrs
;
3620 bfd_vma filehdr_vaddr
, filehdr_paddr
;
3621 bfd_vma phdrs_vaddr
, phdrs_paddr
;
3622 Elf_Internal_Phdr
*p
;
3625 if (elf_tdata (abfd
)->segment_map
== NULL
)
3627 if (! map_sections_to_segments (abfd
))
3632 /* The placement algorithm assumes that non allocated sections are
3633 not in PT_LOAD segments. We ensure this here by removing such
3634 sections from the segment map. */
3635 for (m
= elf_tdata (abfd
)->segment_map
;
3639 unsigned int new_count
;
3642 if (m
->p_type
!= PT_LOAD
)
3646 for (i
= 0; i
< m
->count
; i
++)
3648 if ((m
->sections
[i
]->flags
& SEC_ALLOC
) != 0)
3651 m
->sections
[new_count
] = m
->sections
[i
];
3657 if (new_count
!= m
->count
)
3658 m
->count
= new_count
;
3662 if (bed
->elf_backend_modify_segment_map
)
3664 if (! (*bed
->elf_backend_modify_segment_map
) (abfd
))
3669 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
3672 elf_elfheader (abfd
)->e_phoff
= bed
->s
->sizeof_ehdr
;
3673 elf_elfheader (abfd
)->e_phentsize
= bed
->s
->sizeof_phdr
;
3674 elf_elfheader (abfd
)->e_phnum
= count
;
3679 /* If we already counted the number of program segments, make sure
3680 that we allocated enough space. This happens when SIZEOF_HEADERS
3681 is used in a linker script. */
3682 alloc
= elf_tdata (abfd
)->program_header_size
/ bed
->s
->sizeof_phdr
;
3683 if (alloc
!= 0 && count
> alloc
)
3685 ((*_bfd_error_handler
)
3686 (_("%s: Not enough room for program headers (allocated %u, need %u)"),
3687 bfd_get_filename (abfd
), alloc
, count
));
3688 bfd_set_error (bfd_error_bad_value
);
3695 amt
= alloc
* sizeof (Elf_Internal_Phdr
);
3696 phdrs
= (Elf_Internal_Phdr
*) bfd_alloc (abfd
, amt
);
3700 off
= bed
->s
->sizeof_ehdr
;
3701 off
+= alloc
* bed
->s
->sizeof_phdr
;
3708 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
3715 /* If elf_segment_map is not from map_sections_to_segments, the
3716 sections may not be correctly ordered. NOTE: sorting should
3717 not be done to the PT_NOTE section of a corefile, which may
3718 contain several pseudo-sections artificially created by bfd.
3719 Sorting these pseudo-sections breaks things badly. */
3721 && !(elf_elfheader (abfd
)->e_type
== ET_CORE
3722 && m
->p_type
== PT_NOTE
))
3723 qsort (m
->sections
, (size_t) m
->count
, sizeof (asection
*),
3726 p
->p_type
= m
->p_type
;
3727 p
->p_flags
= m
->p_flags
;
3729 if (p
->p_type
== PT_LOAD
3731 && (m
->sections
[0]->flags
& SEC_ALLOC
) != 0)
3733 if ((abfd
->flags
& D_PAGED
) != 0)
3734 off
+= (m
->sections
[0]->vma
- off
) % bed
->maxpagesize
;
3737 bfd_size_type align
;
3740 for (i
= 0, secpp
= m
->sections
; i
< m
->count
; i
++, secpp
++)
3742 bfd_size_type secalign
;
3744 secalign
= bfd_get_section_alignment (abfd
, *secpp
);
3745 if (secalign
> align
)
3749 off
+= (m
->sections
[0]->vma
- off
) % (1 << align
);
3756 p
->p_vaddr
= m
->sections
[0]->vma
;
3758 if (m
->p_paddr_valid
)
3759 p
->p_paddr
= m
->p_paddr
;
3760 else if (m
->count
== 0)
3763 p
->p_paddr
= m
->sections
[0]->lma
;
3765 if (p
->p_type
== PT_LOAD
3766 && (abfd
->flags
& D_PAGED
) != 0)
3767 p
->p_align
= bed
->maxpagesize
;
3768 else if (m
->count
== 0)
3769 p
->p_align
= 1 << bed
->s
->log_file_align
;
3777 if (m
->includes_filehdr
)
3779 if (! m
->p_flags_valid
)
3782 p
->p_filesz
= bed
->s
->sizeof_ehdr
;
3783 p
->p_memsz
= bed
->s
->sizeof_ehdr
;
3786 BFD_ASSERT (p
->p_type
== PT_LOAD
);
3788 if (p
->p_vaddr
< (bfd_vma
) off
)
3790 (*_bfd_error_handler
)
3791 (_("%s: Not enough room for program headers, try linking with -N"),
3792 bfd_get_filename (abfd
));
3793 bfd_set_error (bfd_error_bad_value
);
3798 if (! m
->p_paddr_valid
)
3801 if (p
->p_type
== PT_LOAD
)
3803 filehdr_vaddr
= p
->p_vaddr
;
3804 filehdr_paddr
= p
->p_paddr
;
3808 if (m
->includes_phdrs
)
3810 if (! m
->p_flags_valid
)
3813 if (m
->includes_filehdr
)
3815 if (p
->p_type
== PT_LOAD
)
3817 phdrs_vaddr
= p
->p_vaddr
+ bed
->s
->sizeof_ehdr
;
3818 phdrs_paddr
= p
->p_paddr
+ bed
->s
->sizeof_ehdr
;
3823 p
->p_offset
= bed
->s
->sizeof_ehdr
;
3827 BFD_ASSERT (p
->p_type
== PT_LOAD
);
3828 p
->p_vaddr
-= off
- p
->p_offset
;
3829 if (! m
->p_paddr_valid
)
3830 p
->p_paddr
-= off
- p
->p_offset
;
3833 if (p
->p_type
== PT_LOAD
)
3835 phdrs_vaddr
= p
->p_vaddr
;
3836 phdrs_paddr
= p
->p_paddr
;
3839 phdrs_vaddr
= bed
->maxpagesize
+ bed
->s
->sizeof_ehdr
;
3842 p
->p_filesz
+= alloc
* bed
->s
->sizeof_phdr
;
3843 p
->p_memsz
+= alloc
* bed
->s
->sizeof_phdr
;
3846 if (p
->p_type
== PT_LOAD
3847 || (p
->p_type
== PT_NOTE
&& bfd_get_format (abfd
) == bfd_core
))
3849 if (! m
->includes_filehdr
&& ! m
->includes_phdrs
)
3855 adjust
= off
- (p
->p_offset
+ p
->p_filesz
);
3856 p
->p_filesz
+= adjust
;
3857 p
->p_memsz
+= adjust
;
3863 for (i
= 0, secpp
= m
->sections
; i
< m
->count
; i
++, secpp
++)
3867 bfd_size_type align
;
3871 align
= 1 << bfd_get_section_alignment (abfd
, sec
);
3873 /* The section may have artificial alignment forced by a
3874 link script. Notice this case by the gap between the
3875 cumulative phdr lma and the section's lma. */
3876 if (p
->p_paddr
+ p
->p_memsz
< sec
->lma
)
3878 bfd_vma adjust
= sec
->lma
- (p
->p_paddr
+ p
->p_memsz
);
3880 p
->p_memsz
+= adjust
;
3881 if (p
->p_type
== PT_LOAD
3882 || (p
->p_type
== PT_NOTE
3883 && bfd_get_format (abfd
) == bfd_core
))
3888 if ((flags
& SEC_LOAD
) != 0
3889 || (flags
& SEC_THREAD_LOCAL
) != 0)
3890 p
->p_filesz
+= adjust
;
3893 if (p
->p_type
== PT_LOAD
)
3895 bfd_signed_vma adjust
;
3897 if ((flags
& SEC_LOAD
) != 0)
3899 adjust
= sec
->lma
- (p
->p_paddr
+ p
->p_memsz
);
3903 else if ((flags
& SEC_ALLOC
) != 0)
3905 /* The section VMA must equal the file position
3906 modulo the page size. FIXME: I'm not sure if
3907 this adjustment is really necessary. We used to
3908 not have the SEC_LOAD case just above, and then
3909 this was necessary, but now I'm not sure. */
3910 if ((abfd
->flags
& D_PAGED
) != 0)
3911 adjust
= (sec
->vma
- voff
) % bed
->maxpagesize
;
3913 adjust
= (sec
->vma
- voff
) % align
;
3922 (* _bfd_error_handler
) (_("\
3923 Error: First section in segment (%s) starts at 0x%x whereas the segment starts at 0x%x"),
3924 bfd_section_name (abfd
, sec
),
3929 p
->p_memsz
+= adjust
;
3932 if ((flags
& SEC_LOAD
) != 0)
3933 p
->p_filesz
+= adjust
;
3938 /* We check SEC_HAS_CONTENTS here because if NOLOAD is
3939 used in a linker script we may have a section with
3940 SEC_LOAD clear but which is supposed to have
3942 if ((flags
& SEC_LOAD
) != 0
3943 || (flags
& SEC_HAS_CONTENTS
) != 0)
3944 off
+= sec
->_raw_size
;
3946 if ((flags
& SEC_ALLOC
) != 0
3947 && ((flags
& SEC_LOAD
) != 0
3948 || (flags
& SEC_THREAD_LOCAL
) == 0))
3949 voff
+= sec
->_raw_size
;
3952 if (p
->p_type
== PT_NOTE
&& bfd_get_format (abfd
) == bfd_core
)
3954 /* The actual "note" segment has i == 0.
3955 This is the one that actually contains everything. */
3959 p
->p_filesz
= sec
->_raw_size
;
3960 off
+= sec
->_raw_size
;
3965 /* Fake sections -- don't need to be written. */
3968 flags
= sec
->flags
= 0;
3975 if ((sec
->flags
& SEC_LOAD
) != 0
3976 || (sec
->flags
& SEC_THREAD_LOCAL
) == 0
3977 || p
->p_type
== PT_TLS
)
3978 p
->p_memsz
+= sec
->_raw_size
;
3980 if ((flags
& SEC_LOAD
) != 0)
3981 p
->p_filesz
+= sec
->_raw_size
;
3983 if (p
->p_type
== PT_TLS
3984 && sec
->_raw_size
== 0
3985 && (sec
->flags
& SEC_HAS_CONTENTS
) == 0)
3987 struct bfd_link_order
*o
;
3988 bfd_vma tbss_size
= 0;
3990 for (o
= sec
->link_order_head
; o
!= NULL
; o
= o
->next
)
3991 if (tbss_size
< o
->offset
+ o
->size
)
3992 tbss_size
= o
->offset
+ o
->size
;
3994 p
->p_memsz
+= tbss_size
;
3997 if (align
> p
->p_align
3998 && (p
->p_type
!= PT_LOAD
|| (abfd
->flags
& D_PAGED
) == 0))
4002 if (! m
->p_flags_valid
)
4005 if ((flags
& SEC_CODE
) != 0)
4007 if ((flags
& SEC_READONLY
) == 0)
4013 /* Now that we have set the section file positions, we can set up
4014 the file positions for the non PT_LOAD segments. */
4015 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
4019 if (p
->p_type
!= PT_LOAD
&& m
->count
> 0)
4021 BFD_ASSERT (! m
->includes_filehdr
&& ! m
->includes_phdrs
);
4022 p
->p_offset
= m
->sections
[0]->filepos
;
4026 if (m
->includes_filehdr
)
4028 p
->p_vaddr
= filehdr_vaddr
;
4029 if (! m
->p_paddr_valid
)
4030 p
->p_paddr
= filehdr_paddr
;
4032 else if (m
->includes_phdrs
)
4034 p
->p_vaddr
= phdrs_vaddr
;
4035 if (! m
->p_paddr_valid
)
4036 p
->p_paddr
= phdrs_paddr
;
4041 /* Clear out any program headers we allocated but did not use. */
4042 for (; count
< alloc
; count
++, p
++)
4044 memset (p
, 0, sizeof *p
);
4045 p
->p_type
= PT_NULL
;
4048 elf_tdata (abfd
)->phdr
= phdrs
;
4050 elf_tdata (abfd
)->next_file_pos
= off
;
4052 /* Write out the program headers. */
4053 if (bfd_seek (abfd
, (bfd_signed_vma
) bed
->s
->sizeof_ehdr
, SEEK_SET
) != 0
4054 || bed
->s
->write_out_phdrs (abfd
, phdrs
, alloc
) != 0)
4060 /* Get the size of the program header.
4062 If this is called by the linker before any of the section VMA's are set, it
4063 can't calculate the correct value for a strange memory layout. This only
4064 happens when SIZEOF_HEADERS is used in a linker script. In this case,
4065 SORTED_HDRS is NULL and we assume the normal scenario of one text and one
4066 data segment (exclusive of .interp and .dynamic).
4068 ??? User written scripts must either not use SIZEOF_HEADERS, or assume there
4069 will be two segments. */
4071 static bfd_size_type
4072 get_program_header_size (abfd
)
4077 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
4079 /* We can't return a different result each time we're called. */
4080 if (elf_tdata (abfd
)->program_header_size
!= 0)
4081 return elf_tdata (abfd
)->program_header_size
;
4083 if (elf_tdata (abfd
)->segment_map
!= NULL
)
4085 struct elf_segment_map
*m
;
4088 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
4090 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
4091 return elf_tdata (abfd
)->program_header_size
;
4094 /* Assume we will need exactly two PT_LOAD segments: one for text
4095 and one for data. */
4098 s
= bfd_get_section_by_name (abfd
, ".interp");
4099 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
4101 /* If we have a loadable interpreter section, we need a
4102 PT_INTERP segment. In this case, assume we also need a
4103 PT_PHDR segment, although that may not be true for all
4108 if (bfd_get_section_by_name (abfd
, ".dynamic") != NULL
)
4110 /* We need a PT_DYNAMIC segment. */
4114 if (elf_tdata (abfd
)->eh_frame_hdr
)
4116 /* We need a PT_GNU_EH_FRAME segment. */
4120 if (elf_tdata (abfd
)->stack_flags
)
4122 /* We need a PT_GNU_STACK segment. */
4126 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
4128 if ((s
->flags
& SEC_LOAD
) != 0
4129 && strncmp (s
->name
, ".note", 5) == 0)
4131 /* We need a PT_NOTE segment. */
4136 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
4138 if (s
->flags
& SEC_THREAD_LOCAL
)
4140 /* We need a PT_TLS segment. */
4146 /* Let the backend count up any program headers it might need. */
4147 if (bed
->elf_backend_additional_program_headers
)
4151 a
= (*bed
->elf_backend_additional_program_headers
) (abfd
);
4157 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
4158 return elf_tdata (abfd
)->program_header_size
;
4161 /* Work out the file positions of all the sections. This is called by
4162 _bfd_elf_compute_section_file_positions. All the section sizes and
4163 VMAs must be known before this is called.
4165 We do not consider reloc sections at this point, unless they form
4166 part of the loadable image. Reloc sections are assigned file
4167 positions in assign_file_positions_for_relocs, which is called by
4168 write_object_contents and final_link.
4170 We also don't set the positions of the .symtab and .strtab here. */
4173 assign_file_positions_except_relocs (abfd
)
4176 struct elf_obj_tdata
* const tdata
= elf_tdata (abfd
);
4177 Elf_Internal_Ehdr
* const i_ehdrp
= elf_elfheader (abfd
);
4178 Elf_Internal_Shdr
** const i_shdrpp
= elf_elfsections (abfd
);
4179 unsigned int num_sec
= elf_numsections (abfd
);
4181 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
4183 if ((abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0
4184 && bfd_get_format (abfd
) != bfd_core
)
4186 Elf_Internal_Shdr
**hdrpp
;
4189 /* Start after the ELF header. */
4190 off
= i_ehdrp
->e_ehsize
;
4192 /* We are not creating an executable, which means that we are
4193 not creating a program header, and that the actual order of
4194 the sections in the file is unimportant. */
4195 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< num_sec
; i
++, hdrpp
++)
4197 Elf_Internal_Shdr
*hdr
;
4200 if (hdr
->sh_type
== SHT_REL
4201 || hdr
->sh_type
== SHT_RELA
4202 || i
== tdata
->symtab_section
4203 || i
== tdata
->symtab_shndx_section
4204 || i
== tdata
->strtab_section
)
4206 hdr
->sh_offset
= -1;
4209 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, TRUE
);
4211 if (i
== SHN_LORESERVE
- 1)
4213 i
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
4214 hdrpp
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
4221 Elf_Internal_Shdr
**hdrpp
;
4223 /* Assign file positions for the loaded sections based on the
4224 assignment of sections to segments. */
4225 if (! assign_file_positions_for_segments (abfd
))
4228 /* Assign file positions for the other sections. */
4230 off
= elf_tdata (abfd
)->next_file_pos
;
4231 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< num_sec
; i
++, hdrpp
++)
4233 Elf_Internal_Shdr
*hdr
;
4236 if (hdr
->bfd_section
!= NULL
4237 && hdr
->bfd_section
->filepos
!= 0)
4238 hdr
->sh_offset
= hdr
->bfd_section
->filepos
;
4239 else if ((hdr
->sh_flags
& SHF_ALLOC
) != 0)
4241 ((*_bfd_error_handler
)
4242 (_("%s: warning: allocated section `%s' not in segment"),
4243 bfd_get_filename (abfd
),
4244 (hdr
->bfd_section
== NULL
4246 : hdr
->bfd_section
->name
)));
4247 if ((abfd
->flags
& D_PAGED
) != 0)
4248 off
+= (hdr
->sh_addr
- off
) % bed
->maxpagesize
;
4250 off
+= (hdr
->sh_addr
- off
) % hdr
->sh_addralign
;
4251 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
,
4254 else if (hdr
->sh_type
== SHT_REL
4255 || hdr
->sh_type
== SHT_RELA
4256 || hdr
== i_shdrpp
[tdata
->symtab_section
]
4257 || hdr
== i_shdrpp
[tdata
->symtab_shndx_section
]
4258 || hdr
== i_shdrpp
[tdata
->strtab_section
])
4259 hdr
->sh_offset
= -1;
4261 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, TRUE
);
4263 if (i
== SHN_LORESERVE
- 1)
4265 i
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
4266 hdrpp
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
4271 /* Place the section headers. */
4272 off
= align_file_position (off
, 1 << bed
->s
->log_file_align
);
4273 i_ehdrp
->e_shoff
= off
;
4274 off
+= i_ehdrp
->e_shnum
* i_ehdrp
->e_shentsize
;
4276 elf_tdata (abfd
)->next_file_pos
= off
;
4285 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
4286 Elf_Internal_Phdr
*i_phdrp
= 0; /* Program header table, internal form */
4287 Elf_Internal_Shdr
**i_shdrp
; /* Section header table, internal form */
4288 struct elf_strtab_hash
*shstrtab
;
4289 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
4291 i_ehdrp
= elf_elfheader (abfd
);
4292 i_shdrp
= elf_elfsections (abfd
);
4294 shstrtab
= _bfd_elf_strtab_init ();
4295 if (shstrtab
== NULL
)
4298 elf_shstrtab (abfd
) = shstrtab
;
4300 i_ehdrp
->e_ident
[EI_MAG0
] = ELFMAG0
;
4301 i_ehdrp
->e_ident
[EI_MAG1
] = ELFMAG1
;
4302 i_ehdrp
->e_ident
[EI_MAG2
] = ELFMAG2
;
4303 i_ehdrp
->e_ident
[EI_MAG3
] = ELFMAG3
;
4305 i_ehdrp
->e_ident
[EI_CLASS
] = bed
->s
->elfclass
;
4306 i_ehdrp
->e_ident
[EI_DATA
] =
4307 bfd_big_endian (abfd
) ? ELFDATA2MSB
: ELFDATA2LSB
;
4308 i_ehdrp
->e_ident
[EI_VERSION
] = bed
->s
->ev_current
;
4310 if ((abfd
->flags
& DYNAMIC
) != 0)
4311 i_ehdrp
->e_type
= ET_DYN
;
4312 else if ((abfd
->flags
& EXEC_P
) != 0)
4313 i_ehdrp
->e_type
= ET_EXEC
;
4314 else if (bfd_get_format (abfd
) == bfd_core
)
4315 i_ehdrp
->e_type
= ET_CORE
;
4317 i_ehdrp
->e_type
= ET_REL
;
4319 switch (bfd_get_arch (abfd
))
4321 case bfd_arch_unknown
:
4322 i_ehdrp
->e_machine
= EM_NONE
;
4325 /* There used to be a long list of cases here, each one setting
4326 e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE
4327 in the corresponding bfd definition. To avoid duplication,
4328 the switch was removed. Machines that need special handling
4329 can generally do it in elf_backend_final_write_processing(),
4330 unless they need the information earlier than the final write.
4331 Such need can generally be supplied by replacing the tests for
4332 e_machine with the conditions used to determine it. */
4334 if (get_elf_backend_data (abfd
) != NULL
)
4335 i_ehdrp
->e_machine
= get_elf_backend_data (abfd
)->elf_machine_code
;
4337 i_ehdrp
->e_machine
= EM_NONE
;
4340 i_ehdrp
->e_version
= bed
->s
->ev_current
;
4341 i_ehdrp
->e_ehsize
= bed
->s
->sizeof_ehdr
;
4343 /* No program header, for now. */
4344 i_ehdrp
->e_phoff
= 0;
4345 i_ehdrp
->e_phentsize
= 0;
4346 i_ehdrp
->e_phnum
= 0;
4348 /* Each bfd section is section header entry. */
4349 i_ehdrp
->e_entry
= bfd_get_start_address (abfd
);
4350 i_ehdrp
->e_shentsize
= bed
->s
->sizeof_shdr
;
4352 /* If we're building an executable, we'll need a program header table. */
4353 if (abfd
->flags
& EXEC_P
)
4355 /* It all happens later. */
4357 i_ehdrp
->e_phentsize
= sizeof (Elf_External_Phdr
);
4359 /* elf_build_phdrs() returns a (NULL-terminated) array of
4360 Elf_Internal_Phdrs. */
4361 i_phdrp
= elf_build_phdrs (abfd
, i_ehdrp
, i_shdrp
, &i_ehdrp
->e_phnum
);
4362 i_ehdrp
->e_phoff
= outbase
;
4363 outbase
+= i_ehdrp
->e_phentsize
* i_ehdrp
->e_phnum
;
4368 i_ehdrp
->e_phentsize
= 0;
4370 i_ehdrp
->e_phoff
= 0;
4373 elf_tdata (abfd
)->symtab_hdr
.sh_name
=
4374 (unsigned int) _bfd_elf_strtab_add (shstrtab
, ".symtab", FALSE
);
4375 elf_tdata (abfd
)->strtab_hdr
.sh_name
=
4376 (unsigned int) _bfd_elf_strtab_add (shstrtab
, ".strtab", FALSE
);
4377 elf_tdata (abfd
)->shstrtab_hdr
.sh_name
=
4378 (unsigned int) _bfd_elf_strtab_add (shstrtab
, ".shstrtab", FALSE
);
4379 if (elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
4380 || elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
4381 || elf_tdata (abfd
)->shstrtab_hdr
.sh_name
== (unsigned int) -1)
4387 /* Assign file positions for all the reloc sections which are not part
4388 of the loadable file image. */
4391 _bfd_elf_assign_file_positions_for_relocs (abfd
)
4395 unsigned int i
, num_sec
;
4396 Elf_Internal_Shdr
**shdrpp
;
4398 off
= elf_tdata (abfd
)->next_file_pos
;
4400 num_sec
= elf_numsections (abfd
);
4401 for (i
= 1, shdrpp
= elf_elfsections (abfd
) + 1; i
< num_sec
; i
++, shdrpp
++)
4403 Elf_Internal_Shdr
*shdrp
;
4406 if ((shdrp
->sh_type
== SHT_REL
|| shdrp
->sh_type
== SHT_RELA
)
4407 && shdrp
->sh_offset
== -1)
4408 off
= _bfd_elf_assign_file_position_for_section (shdrp
, off
, TRUE
);
4411 elf_tdata (abfd
)->next_file_pos
= off
;
4415 _bfd_elf_write_object_contents (abfd
)
4418 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
4419 Elf_Internal_Ehdr
*i_ehdrp
;
4420 Elf_Internal_Shdr
**i_shdrp
;
4422 unsigned int count
, num_sec
;
4424 if (! abfd
->output_has_begun
4425 && ! _bfd_elf_compute_section_file_positions
4426 (abfd
, (struct bfd_link_info
*) NULL
))
4429 i_shdrp
= elf_elfsections (abfd
);
4430 i_ehdrp
= elf_elfheader (abfd
);
4433 bfd_map_over_sections (abfd
, bed
->s
->write_relocs
, &failed
);
4437 _bfd_elf_assign_file_positions_for_relocs (abfd
);
4439 /* After writing the headers, we need to write the sections too... */
4440 num_sec
= elf_numsections (abfd
);
4441 for (count
= 1; count
< num_sec
; count
++)
4443 if (bed
->elf_backend_section_processing
)
4444 (*bed
->elf_backend_section_processing
) (abfd
, i_shdrp
[count
]);
4445 if (i_shdrp
[count
]->contents
)
4447 bfd_size_type amt
= i_shdrp
[count
]->sh_size
;
4449 if (bfd_seek (abfd
, i_shdrp
[count
]->sh_offset
, SEEK_SET
) != 0
4450 || bfd_bwrite (i_shdrp
[count
]->contents
, amt
, abfd
) != amt
)
4453 if (count
== SHN_LORESERVE
- 1)
4454 count
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
4457 /* Write out the section header names. */
4458 if (bfd_seek (abfd
, elf_tdata (abfd
)->shstrtab_hdr
.sh_offset
, SEEK_SET
) != 0
4459 || ! _bfd_elf_strtab_emit (abfd
, elf_shstrtab (abfd
)))
4462 if (bed
->elf_backend_final_write_processing
)
4463 (*bed
->elf_backend_final_write_processing
) (abfd
,
4464 elf_tdata (abfd
)->linker
);
4466 return bed
->s
->write_shdrs_and_ehdr (abfd
);
4470 _bfd_elf_write_corefile_contents (abfd
)
4473 /* Hopefully this can be done just like an object file. */
4474 return _bfd_elf_write_object_contents (abfd
);
4477 /* Given a section, search the header to find them. */
4480 _bfd_elf_section_from_bfd_section (abfd
, asect
)
4484 struct elf_backend_data
*bed
;
4487 if (elf_section_data (asect
) != NULL
4488 && elf_section_data (asect
)->this_idx
!= 0)
4489 return elf_section_data (asect
)->this_idx
;
4491 if (bfd_is_abs_section (asect
))
4493 else if (bfd_is_com_section (asect
))
4495 else if (bfd_is_und_section (asect
))
4499 Elf_Internal_Shdr
**i_shdrp
= elf_elfsections (abfd
);
4500 int maxindex
= elf_numsections (abfd
);
4502 for (index
= 1; index
< maxindex
; index
++)
4504 Elf_Internal_Shdr
*hdr
= i_shdrp
[index
];
4506 if (hdr
!= NULL
&& hdr
->bfd_section
== asect
)
4512 bed
= get_elf_backend_data (abfd
);
4513 if (bed
->elf_backend_section_from_bfd_section
)
4517 if ((*bed
->elf_backend_section_from_bfd_section
) (abfd
, asect
, &retval
))
4522 bfd_set_error (bfd_error_nonrepresentable_section
);
4527 /* Given a BFD symbol, return the index in the ELF symbol table, or -1
4531 _bfd_elf_symbol_from_bfd_symbol (abfd
, asym_ptr_ptr
)
4533 asymbol
**asym_ptr_ptr
;
4535 asymbol
*asym_ptr
= *asym_ptr_ptr
;
4537 flagword flags
= asym_ptr
->flags
;
4539 /* When gas creates relocations against local labels, it creates its
4540 own symbol for the section, but does put the symbol into the
4541 symbol chain, so udata is 0. When the linker is generating
4542 relocatable output, this section symbol may be for one of the
4543 input sections rather than the output section. */
4544 if (asym_ptr
->udata
.i
== 0
4545 && (flags
& BSF_SECTION_SYM
)
4546 && asym_ptr
->section
)
4550 if (asym_ptr
->section
->output_section
!= NULL
)
4551 indx
= asym_ptr
->section
->output_section
->index
;
4553 indx
= asym_ptr
->section
->index
;
4554 if (indx
< elf_num_section_syms (abfd
)
4555 && elf_section_syms (abfd
)[indx
] != NULL
)
4556 asym_ptr
->udata
.i
= elf_section_syms (abfd
)[indx
]->udata
.i
;
4559 idx
= asym_ptr
->udata
.i
;
4563 /* This case can occur when using --strip-symbol on a symbol
4564 which is used in a relocation entry. */
4565 (*_bfd_error_handler
)
4566 (_("%s: symbol `%s' required but not present"),
4567 bfd_archive_filename (abfd
), bfd_asymbol_name (asym_ptr
));
4568 bfd_set_error (bfd_error_no_symbols
);
4575 "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n",
4576 (long) asym_ptr
, asym_ptr
->name
, idx
, flags
,
4577 elf_symbol_flags (flags
));
4585 /* Copy private BFD data. This copies any program header information. */
4588 copy_private_bfd_data (ibfd
, obfd
)
4592 Elf_Internal_Ehdr
*iehdr
;
4593 struct elf_segment_map
*map
;
4594 struct elf_segment_map
*map_first
;
4595 struct elf_segment_map
**pointer_to_map
;
4596 Elf_Internal_Phdr
*segment
;
4599 unsigned int num_segments
;
4600 bfd_boolean phdr_included
= FALSE
;
4601 bfd_vma maxpagesize
;
4602 struct elf_segment_map
*phdr_adjust_seg
= NULL
;
4603 unsigned int phdr_adjust_num
= 0;
4604 struct elf_backend_data
*bed
;
4606 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
4607 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
4610 if (elf_tdata (ibfd
)->phdr
== NULL
)
4613 bed
= get_elf_backend_data (ibfd
);
4614 iehdr
= elf_elfheader (ibfd
);
4617 pointer_to_map
= &map_first
;
4619 num_segments
= elf_elfheader (ibfd
)->e_phnum
;
4620 maxpagesize
= get_elf_backend_data (obfd
)->maxpagesize
;
4622 /* Returns the end address of the segment + 1. */
4623 #define SEGMENT_END(segment, start) \
4624 (start + (segment->p_memsz > segment->p_filesz \
4625 ? segment->p_memsz : segment->p_filesz))
4627 #define SECTION_SIZE(section, segment) \
4628 (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \
4629 != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \
4630 ? section->_raw_size : 0)
4632 /* Returns TRUE if the given section is contained within
4633 the given segment. VMA addresses are compared. */
4634 #define IS_CONTAINED_BY_VMA(section, segment) \
4635 (section->vma >= segment->p_vaddr \
4636 && (section->vma + SECTION_SIZE (section, segment) \
4637 <= (SEGMENT_END (segment, segment->p_vaddr))))
4639 /* Returns TRUE if the given section is contained within
4640 the given segment. LMA addresses are compared. */
4641 #define IS_CONTAINED_BY_LMA(section, segment, base) \
4642 (section->lma >= base \
4643 && (section->lma + SECTION_SIZE (section, segment) \
4644 <= SEGMENT_END (segment, base)))
4646 /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */
4647 #define IS_COREFILE_NOTE(p, s) \
4648 (p->p_type == PT_NOTE \
4649 && bfd_get_format (ibfd) == bfd_core \
4650 && s->vma == 0 && s->lma == 0 \
4651 && (bfd_vma) s->filepos >= p->p_offset \
4652 && ((bfd_vma) s->filepos + s->_raw_size \
4653 <= p->p_offset + p->p_filesz))
4655 /* The complicated case when p_vaddr is 0 is to handle the Solaris
4656 linker, which generates a PT_INTERP section with p_vaddr and
4657 p_memsz set to 0. */
4658 #define IS_SOLARIS_PT_INTERP(p, s) \
4660 && p->p_paddr == 0 \
4661 && p->p_memsz == 0 \
4662 && p->p_filesz > 0 \
4663 && (s->flags & SEC_HAS_CONTENTS) != 0 \
4664 && s->_raw_size > 0 \
4665 && (bfd_vma) s->filepos >= p->p_offset \
4666 && ((bfd_vma) s->filepos + s->_raw_size \
4667 <= p->p_offset + p->p_filesz))
4669 /* Decide if the given section should be included in the given segment.
4670 A section will be included if:
4671 1. It is within the address space of the segment -- we use the LMA
4672 if that is set for the segment and the VMA otherwise,
4673 2. It is an allocated segment,
4674 3. There is an output section associated with it,
4675 4. The section has not already been allocated to a previous segment.
4676 5. PT_TLS segment includes only SHF_TLS sections.
4677 6. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. */
4678 #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \
4679 ((((segment->p_paddr \
4680 ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \
4681 : IS_CONTAINED_BY_VMA (section, segment)) \
4682 && (section->flags & SEC_ALLOC) != 0) \
4683 || IS_COREFILE_NOTE (segment, section)) \
4684 && section->output_section != NULL \
4685 && (segment->p_type != PT_TLS \
4686 || (section->flags & SEC_THREAD_LOCAL)) \
4687 && (segment->p_type == PT_LOAD \
4688 || segment->p_type == PT_TLS \
4689 || (section->flags & SEC_THREAD_LOCAL) == 0) \
4690 && ! section->segment_mark)
4692 /* Returns TRUE iff seg1 starts after the end of seg2. */
4693 #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \
4694 (seg1->field >= SEGMENT_END (seg2, seg2->field))
4696 /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both
4697 their VMA address ranges and their LMA address ranges overlap.
4698 It is possible to have overlapping VMA ranges without overlapping LMA
4699 ranges. RedBoot images for example can have both .data and .bss mapped
4700 to the same VMA range, but with the .data section mapped to a different
4702 #define SEGMENT_OVERLAPS(seg1, seg2) \
4703 ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \
4704 || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \
4705 && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \
4706 || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr)))
4708 /* Initialise the segment mark field. */
4709 for (section
= ibfd
->sections
; section
!= NULL
; section
= section
->next
)
4710 section
->segment_mark
= FALSE
;
4712 /* Scan through the segments specified in the program header
4713 of the input BFD. For this first scan we look for overlaps
4714 in the loadable segments. These can be created by weird
4715 parameters to objcopy. Also, fix some solaris weirdness. */
4716 for (i
= 0, segment
= elf_tdata (ibfd
)->phdr
;
4721 Elf_Internal_Phdr
*segment2
;
4723 if (segment
->p_type
== PT_INTERP
)
4724 for (section
= ibfd
->sections
; section
; section
= section
->next
)
4725 if (IS_SOLARIS_PT_INTERP (segment
, section
))
4727 /* Mininal change so that the normal section to segment
4728 assigment code will work. */
4729 segment
->p_vaddr
= section
->vma
;
4733 if (segment
->p_type
!= PT_LOAD
)
4736 /* Determine if this segment overlaps any previous segments. */
4737 for (j
= 0, segment2
= elf_tdata (ibfd
)->phdr
; j
< i
; j
++, segment2
++)
4739 bfd_signed_vma extra_length
;
4741 if (segment2
->p_type
!= PT_LOAD
4742 || ! SEGMENT_OVERLAPS (segment
, segment2
))
4745 /* Merge the two segments together. */
4746 if (segment2
->p_vaddr
< segment
->p_vaddr
)
4748 /* Extend SEGMENT2 to include SEGMENT and then delete
4751 SEGMENT_END (segment
, segment
->p_vaddr
)
4752 - SEGMENT_END (segment2
, segment2
->p_vaddr
);
4754 if (extra_length
> 0)
4756 segment2
->p_memsz
+= extra_length
;
4757 segment2
->p_filesz
+= extra_length
;
4760 segment
->p_type
= PT_NULL
;
4762 /* Since we have deleted P we must restart the outer loop. */
4764 segment
= elf_tdata (ibfd
)->phdr
;
4769 /* Extend SEGMENT to include SEGMENT2 and then delete
4772 SEGMENT_END (segment2
, segment2
->p_vaddr
)
4773 - SEGMENT_END (segment
, segment
->p_vaddr
);
4775 if (extra_length
> 0)
4777 segment
->p_memsz
+= extra_length
;
4778 segment
->p_filesz
+= extra_length
;
4781 segment2
->p_type
= PT_NULL
;
4786 /* The second scan attempts to assign sections to segments. */
4787 for (i
= 0, segment
= elf_tdata (ibfd
)->phdr
;
4791 unsigned int section_count
;
4792 asection
** sections
;
4793 asection
* output_section
;
4795 bfd_vma matching_lma
;
4796 bfd_vma suggested_lma
;
4800 if (segment
->p_type
== PT_NULL
)
4803 /* Compute how many sections might be placed into this segment. */
4804 for (section
= ibfd
->sections
, section_count
= 0;
4806 section
= section
->next
)
4807 if (INCLUDE_SECTION_IN_SEGMENT (section
, segment
, bed
))
4810 /* Allocate a segment map big enough to contain
4811 all of the sections we have selected. */
4812 amt
= sizeof (struct elf_segment_map
);
4813 amt
+= ((bfd_size_type
) section_count
- 1) * sizeof (asection
*);
4814 map
= (struct elf_segment_map
*) bfd_alloc (obfd
, amt
);
4818 /* Initialise the fields of the segment map. Default to
4819 using the physical address of the segment in the input BFD. */
4821 map
->p_type
= segment
->p_type
;
4822 map
->p_flags
= segment
->p_flags
;
4823 map
->p_flags_valid
= 1;
4824 map
->p_paddr
= segment
->p_paddr
;
4825 map
->p_paddr_valid
= 1;
4827 /* Determine if this segment contains the ELF file header
4828 and if it contains the program headers themselves. */
4829 map
->includes_filehdr
= (segment
->p_offset
== 0
4830 && segment
->p_filesz
>= iehdr
->e_ehsize
);
4832 map
->includes_phdrs
= 0;
4834 if (! phdr_included
|| segment
->p_type
!= PT_LOAD
)
4836 map
->includes_phdrs
=
4837 (segment
->p_offset
<= (bfd_vma
) iehdr
->e_phoff
4838 && (segment
->p_offset
+ segment
->p_filesz
4839 >= ((bfd_vma
) iehdr
->e_phoff
4840 + iehdr
->e_phnum
* iehdr
->e_phentsize
)));
4842 if (segment
->p_type
== PT_LOAD
&& map
->includes_phdrs
)
4843 phdr_included
= TRUE
;
4846 if (section_count
== 0)
4848 /* Special segments, such as the PT_PHDR segment, may contain
4849 no sections, but ordinary, loadable segments should contain
4850 something. They are allowed by the ELF spec however, so only
4851 a warning is produced. */
4852 if (segment
->p_type
== PT_LOAD
)
4853 (*_bfd_error_handler
)
4854 (_("%s: warning: Empty loadable segment detected, is this intentional ?\n"),
4855 bfd_archive_filename (ibfd
));
4858 *pointer_to_map
= map
;
4859 pointer_to_map
= &map
->next
;
4864 /* Now scan the sections in the input BFD again and attempt
4865 to add their corresponding output sections to the segment map.
4866 The problem here is how to handle an output section which has
4867 been moved (ie had its LMA changed). There are four possibilities:
4869 1. None of the sections have been moved.
4870 In this case we can continue to use the segment LMA from the
4873 2. All of the sections have been moved by the same amount.
4874 In this case we can change the segment's LMA to match the LMA
4875 of the first section.
4877 3. Some of the sections have been moved, others have not.
4878 In this case those sections which have not been moved can be
4879 placed in the current segment which will have to have its size,
4880 and possibly its LMA changed, and a new segment or segments will
4881 have to be created to contain the other sections.
4883 4. The sections have been moved, but not by the same amount.
4884 In this case we can change the segment's LMA to match the LMA
4885 of the first section and we will have to create a new segment
4886 or segments to contain the other sections.
4888 In order to save time, we allocate an array to hold the section
4889 pointers that we are interested in. As these sections get assigned
4890 to a segment, they are removed from this array. */
4892 /* Gcc 2.96 miscompiles this code on mips. Don't do casting here
4893 to work around this long long bug. */
4894 amt
= section_count
* sizeof (asection
*);
4895 sections
= (asection
**) bfd_malloc (amt
);
4896 if (sections
== NULL
)
4899 /* Step One: Scan for segment vs section LMA conflicts.
4900 Also add the sections to the section array allocated above.
4901 Also add the sections to the current segment. In the common
4902 case, where the sections have not been moved, this means that
4903 we have completely filled the segment, and there is nothing
4909 for (j
= 0, section
= ibfd
->sections
;
4911 section
= section
->next
)
4913 if (INCLUDE_SECTION_IN_SEGMENT (section
, segment
, bed
))
4915 output_section
= section
->output_section
;
4917 sections
[j
++] = section
;
4919 /* The Solaris native linker always sets p_paddr to 0.
4920 We try to catch that case here, and set it to the
4921 correct value. Note - some backends require that
4922 p_paddr be left as zero. */
4923 if (segment
->p_paddr
== 0
4924 && segment
->p_vaddr
!= 0
4925 && (! bed
->want_p_paddr_set_to_zero
)
4927 && output_section
->lma
!= 0
4928 && (output_section
->vma
== (segment
->p_vaddr
4929 + (map
->includes_filehdr
4932 + (map
->includes_phdrs
4934 * iehdr
->e_phentsize
)
4936 map
->p_paddr
= segment
->p_vaddr
;
4938 /* Match up the physical address of the segment with the
4939 LMA address of the output section. */
4940 if (IS_CONTAINED_BY_LMA (output_section
, segment
, map
->p_paddr
)
4941 || IS_COREFILE_NOTE (segment
, section
)
4942 || (bed
->want_p_paddr_set_to_zero
&&
4943 IS_CONTAINED_BY_VMA (output_section
, segment
))
4946 if (matching_lma
== 0)
4947 matching_lma
= output_section
->lma
;
4949 /* We assume that if the section fits within the segment
4950 then it does not overlap any other section within that
4952 map
->sections
[isec
++] = output_section
;
4954 else if (suggested_lma
== 0)
4955 suggested_lma
= output_section
->lma
;
4959 BFD_ASSERT (j
== section_count
);
4961 /* Step Two: Adjust the physical address of the current segment,
4963 if (isec
== section_count
)
4965 /* All of the sections fitted within the segment as currently
4966 specified. This is the default case. Add the segment to
4967 the list of built segments and carry on to process the next
4968 program header in the input BFD. */
4969 map
->count
= section_count
;
4970 *pointer_to_map
= map
;
4971 pointer_to_map
= &map
->next
;
4978 if (matching_lma
!= 0)
4980 /* At least one section fits inside the current segment.
4981 Keep it, but modify its physical address to match the
4982 LMA of the first section that fitted. */
4983 map
->p_paddr
= matching_lma
;
4987 /* None of the sections fitted inside the current segment.
4988 Change the current segment's physical address to match
4989 the LMA of the first section. */
4990 map
->p_paddr
= suggested_lma
;
4993 /* Offset the segment physical address from the lma
4994 to allow for space taken up by elf headers. */
4995 if (map
->includes_filehdr
)
4996 map
->p_paddr
-= iehdr
->e_ehsize
;
4998 if (map
->includes_phdrs
)
5000 map
->p_paddr
-= iehdr
->e_phnum
* iehdr
->e_phentsize
;
5002 /* iehdr->e_phnum is just an estimate of the number
5003 of program headers that we will need. Make a note
5004 here of the number we used and the segment we chose
5005 to hold these headers, so that we can adjust the
5006 offset when we know the correct value. */
5007 phdr_adjust_num
= iehdr
->e_phnum
;
5008 phdr_adjust_seg
= map
;
5012 /* Step Three: Loop over the sections again, this time assigning
5013 those that fit to the current segment and removing them from the
5014 sections array; but making sure not to leave large gaps. Once all
5015 possible sections have been assigned to the current segment it is
5016 added to the list of built segments and if sections still remain
5017 to be assigned, a new segment is constructed before repeating
5025 /* Fill the current segment with sections that fit. */
5026 for (j
= 0; j
< section_count
; j
++)
5028 section
= sections
[j
];
5030 if (section
== NULL
)
5033 output_section
= section
->output_section
;
5035 BFD_ASSERT (output_section
!= NULL
);
5037 if (IS_CONTAINED_BY_LMA (output_section
, segment
, map
->p_paddr
)
5038 || IS_COREFILE_NOTE (segment
, section
))
5040 if (map
->count
== 0)
5042 /* If the first section in a segment does not start at
5043 the beginning of the segment, then something is
5045 if (output_section
->lma
!=
5047 + (map
->includes_filehdr
? iehdr
->e_ehsize
: 0)
5048 + (map
->includes_phdrs
5049 ? iehdr
->e_phnum
* iehdr
->e_phentsize
5055 asection
* prev_sec
;
5057 prev_sec
= map
->sections
[map
->count
- 1];
5059 /* If the gap between the end of the previous section
5060 and the start of this section is more than
5061 maxpagesize then we need to start a new segment. */
5062 if ((BFD_ALIGN (prev_sec
->lma
+ prev_sec
->_raw_size
,
5064 < BFD_ALIGN (output_section
->lma
, maxpagesize
))
5065 || ((prev_sec
->lma
+ prev_sec
->_raw_size
)
5066 > output_section
->lma
))
5068 if (suggested_lma
== 0)
5069 suggested_lma
= output_section
->lma
;
5075 map
->sections
[map
->count
++] = output_section
;
5078 section
->segment_mark
= TRUE
;
5080 else if (suggested_lma
== 0)
5081 suggested_lma
= output_section
->lma
;
5084 BFD_ASSERT (map
->count
> 0);
5086 /* Add the current segment to the list of built segments. */
5087 *pointer_to_map
= map
;
5088 pointer_to_map
= &map
->next
;
5090 if (isec
< section_count
)
5092 /* We still have not allocated all of the sections to
5093 segments. Create a new segment here, initialise it
5094 and carry on looping. */
5095 amt
= sizeof (struct elf_segment_map
);
5096 amt
+= ((bfd_size_type
) section_count
- 1) * sizeof (asection
*);
5097 map
= (struct elf_segment_map
*) bfd_alloc (obfd
, amt
);
5104 /* Initialise the fields of the segment map. Set the physical
5105 physical address to the LMA of the first section that has
5106 not yet been assigned. */
5108 map
->p_type
= segment
->p_type
;
5109 map
->p_flags
= segment
->p_flags
;
5110 map
->p_flags_valid
= 1;
5111 map
->p_paddr
= suggested_lma
;
5112 map
->p_paddr_valid
= 1;
5113 map
->includes_filehdr
= 0;
5114 map
->includes_phdrs
= 0;
5117 while (isec
< section_count
);
5122 /* The Solaris linker creates program headers in which all the
5123 p_paddr fields are zero. When we try to objcopy or strip such a
5124 file, we get confused. Check for this case, and if we find it
5125 reset the p_paddr_valid fields. */
5126 for (map
= map_first
; map
!= NULL
; map
= map
->next
)
5127 if (map
->p_paddr
!= 0)
5130 for (map
= map_first
; map
!= NULL
; map
= map
->next
)
5131 map
->p_paddr_valid
= 0;
5133 elf_tdata (obfd
)->segment_map
= map_first
;
5135 /* If we had to estimate the number of program headers that were
5136 going to be needed, then check our estimate now and adjust
5137 the offset if necessary. */
5138 if (phdr_adjust_seg
!= NULL
)
5142 for (count
= 0, map
= map_first
; map
!= NULL
; map
= map
->next
)
5145 if (count
> phdr_adjust_num
)
5146 phdr_adjust_seg
->p_paddr
5147 -= (count
- phdr_adjust_num
) * iehdr
->e_phentsize
;
5151 /* Final Step: Sort the segments into ascending order of physical
5153 if (map_first
!= NULL
)
5155 struct elf_segment_map
*prev
;
5158 for (map
= map_first
->next
; map
!= NULL
; prev
= map
, map
= map
->next
)
5160 /* Yes I know - its a bubble sort.... */
5161 if (map
->next
!= NULL
&& (map
->next
->p_paddr
< map
->p_paddr
))
5163 /* Swap map and map->next. */
5164 prev
->next
= map
->next
;
5165 map
->next
= map
->next
->next
;
5166 prev
->next
->next
= map
;
5177 #undef IS_CONTAINED_BY_VMA
5178 #undef IS_CONTAINED_BY_LMA
5179 #undef IS_COREFILE_NOTE
5180 #undef IS_SOLARIS_PT_INTERP
5181 #undef INCLUDE_SECTION_IN_SEGMENT
5182 #undef SEGMENT_AFTER_SEGMENT
5183 #undef SEGMENT_OVERLAPS
5187 /* Copy private section information. This copies over the entsize
5188 field, and sometimes the info field. */
5191 _bfd_elf_copy_private_section_data (ibfd
, isec
, obfd
, osec
)
5197 Elf_Internal_Shdr
*ihdr
, *ohdr
;
5199 if (ibfd
->xvec
->flavour
!= bfd_target_elf_flavour
5200 || obfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
5203 if (elf_tdata (obfd
)->segment_map
== NULL
&& elf_tdata (ibfd
)->phdr
!= NULL
)
5207 /* Only set up the segments if there are no more SEC_ALLOC
5208 sections. FIXME: This won't do the right thing if objcopy is
5209 used to remove the last SEC_ALLOC section, since objcopy
5210 won't call this routine in that case. */
5211 for (s
= isec
->next
; s
!= NULL
; s
= s
->next
)
5212 if ((s
->flags
& SEC_ALLOC
) != 0)
5216 if (! copy_private_bfd_data (ibfd
, obfd
))
5221 ihdr
= &elf_section_data (isec
)->this_hdr
;
5222 ohdr
= &elf_section_data (osec
)->this_hdr
;
5224 ohdr
->sh_entsize
= ihdr
->sh_entsize
;
5226 if (ihdr
->sh_type
== SHT_SYMTAB
5227 || ihdr
->sh_type
== SHT_DYNSYM
5228 || ihdr
->sh_type
== SHT_GNU_verneed
5229 || ihdr
->sh_type
== SHT_GNU_verdef
)
5230 ohdr
->sh_info
= ihdr
->sh_info
;
5232 /* Set things up for objcopy. The output SHT_GROUP section will
5233 have its elf_next_in_group pointing back to the input group
5235 elf_next_in_group (osec
) = elf_next_in_group (isec
);
5236 elf_group_name (osec
) = elf_group_name (isec
);
5238 osec
->use_rela_p
= isec
->use_rela_p
;
5243 /* Copy private symbol information. If this symbol is in a section
5244 which we did not map into a BFD section, try to map the section
5245 index correctly. We use special macro definitions for the mapped
5246 section indices; these definitions are interpreted by the
5247 swap_out_syms function. */
5249 #define MAP_ONESYMTAB (SHN_HIOS + 1)
5250 #define MAP_DYNSYMTAB (SHN_HIOS + 2)
5251 #define MAP_STRTAB (SHN_HIOS + 3)
5252 #define MAP_SHSTRTAB (SHN_HIOS + 4)
5253 #define MAP_SYM_SHNDX (SHN_HIOS + 5)
5256 _bfd_elf_copy_private_symbol_data (ibfd
, isymarg
, obfd
, osymarg
)
5262 elf_symbol_type
*isym
, *osym
;
5264 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
5265 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
5268 isym
= elf_symbol_from (ibfd
, isymarg
);
5269 osym
= elf_symbol_from (obfd
, osymarg
);
5273 && bfd_is_abs_section (isym
->symbol
.section
))
5277 shndx
= isym
->internal_elf_sym
.st_shndx
;
5278 if (shndx
== elf_onesymtab (ibfd
))
5279 shndx
= MAP_ONESYMTAB
;
5280 else if (shndx
== elf_dynsymtab (ibfd
))
5281 shndx
= MAP_DYNSYMTAB
;
5282 else if (shndx
== elf_tdata (ibfd
)->strtab_section
)
5284 else if (shndx
== elf_tdata (ibfd
)->shstrtab_section
)
5285 shndx
= MAP_SHSTRTAB
;
5286 else if (shndx
== elf_tdata (ibfd
)->symtab_shndx_section
)
5287 shndx
= MAP_SYM_SHNDX
;
5288 osym
->internal_elf_sym
.st_shndx
= shndx
;
5294 /* Swap out the symbols. */
5297 swap_out_syms (abfd
, sttp
, relocatable_p
)
5299 struct bfd_strtab_hash
**sttp
;
5302 struct elf_backend_data
*bed
;
5305 struct bfd_strtab_hash
*stt
;
5306 Elf_Internal_Shdr
*symtab_hdr
;
5307 Elf_Internal_Shdr
*symtab_shndx_hdr
;
5308 Elf_Internal_Shdr
*symstrtab_hdr
;
5309 char *outbound_syms
;
5310 char *outbound_shndx
;
5314 if (!elf_map_symbols (abfd
))
5317 /* Dump out the symtabs. */
5318 stt
= _bfd_elf_stringtab_init ();
5322 bed
= get_elf_backend_data (abfd
);
5323 symcount
= bfd_get_symcount (abfd
);
5324 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
5325 symtab_hdr
->sh_type
= SHT_SYMTAB
;
5326 symtab_hdr
->sh_entsize
= bed
->s
->sizeof_sym
;
5327 symtab_hdr
->sh_size
= symtab_hdr
->sh_entsize
* (symcount
+ 1);
5328 symtab_hdr
->sh_info
= elf_num_locals (abfd
) + 1;
5329 symtab_hdr
->sh_addralign
= 1 << bed
->s
->log_file_align
;
5331 symstrtab_hdr
= &elf_tdata (abfd
)->strtab_hdr
;
5332 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
5334 amt
= (bfd_size_type
) (1 + symcount
) * bed
->s
->sizeof_sym
;
5335 outbound_syms
= bfd_alloc (abfd
, amt
);
5336 if (outbound_syms
== NULL
)
5338 _bfd_stringtab_free (stt
);
5341 symtab_hdr
->contents
= (PTR
) outbound_syms
;
5343 outbound_shndx
= NULL
;
5344 symtab_shndx_hdr
= &elf_tdata (abfd
)->symtab_shndx_hdr
;
5345 if (symtab_shndx_hdr
->sh_name
!= 0)
5347 amt
= (bfd_size_type
) (1 + symcount
) * sizeof (Elf_External_Sym_Shndx
);
5348 outbound_shndx
= bfd_zalloc (abfd
, amt
);
5349 if (outbound_shndx
== NULL
)
5351 _bfd_stringtab_free (stt
);
5355 symtab_shndx_hdr
->contents
= outbound_shndx
;
5356 symtab_shndx_hdr
->sh_type
= SHT_SYMTAB_SHNDX
;
5357 symtab_shndx_hdr
->sh_size
= amt
;
5358 symtab_shndx_hdr
->sh_addralign
= sizeof (Elf_External_Sym_Shndx
);
5359 symtab_shndx_hdr
->sh_entsize
= sizeof (Elf_External_Sym_Shndx
);
5362 /* Now generate the data (for "contents"). */
5364 /* Fill in zeroth symbol and swap it out. */
5365 Elf_Internal_Sym sym
;
5371 sym
.st_shndx
= SHN_UNDEF
;
5372 bed
->s
->swap_symbol_out (abfd
, &sym
, outbound_syms
, outbound_shndx
);
5373 outbound_syms
+= bed
->s
->sizeof_sym
;
5374 if (outbound_shndx
!= NULL
)
5375 outbound_shndx
+= sizeof (Elf_External_Sym_Shndx
);
5378 syms
= bfd_get_outsymbols (abfd
);
5379 for (idx
= 0; idx
< symcount
; idx
++)
5381 Elf_Internal_Sym sym
;
5382 bfd_vma value
= syms
[idx
]->value
;
5383 elf_symbol_type
*type_ptr
;
5384 flagword flags
= syms
[idx
]->flags
;
5387 if ((flags
& (BSF_SECTION_SYM
| BSF_GLOBAL
)) == BSF_SECTION_SYM
)
5389 /* Local section symbols have no name. */
5394 sym
.st_name
= (unsigned long) _bfd_stringtab_add (stt
,
5397 if (sym
.st_name
== (unsigned long) -1)
5399 _bfd_stringtab_free (stt
);
5404 type_ptr
= elf_symbol_from (abfd
, syms
[idx
]);
5406 if ((flags
& BSF_SECTION_SYM
) == 0
5407 && bfd_is_com_section (syms
[idx
]->section
))
5409 /* ELF common symbols put the alignment into the `value' field,
5410 and the size into the `size' field. This is backwards from
5411 how BFD handles it, so reverse it here. */
5412 sym
.st_size
= value
;
5413 if (type_ptr
== NULL
5414 || type_ptr
->internal_elf_sym
.st_value
== 0)
5415 sym
.st_value
= value
>= 16 ? 16 : (1 << bfd_log2 (value
));
5417 sym
.st_value
= type_ptr
->internal_elf_sym
.st_value
;
5418 sym
.st_shndx
= _bfd_elf_section_from_bfd_section
5419 (abfd
, syms
[idx
]->section
);
5423 asection
*sec
= syms
[idx
]->section
;
5426 if (sec
->output_section
)
5428 value
+= sec
->output_offset
;
5429 sec
= sec
->output_section
;
5432 /* Don't add in the section vma for relocatable output. */
5433 if (! relocatable_p
)
5435 sym
.st_value
= value
;
5436 sym
.st_size
= type_ptr
? type_ptr
->internal_elf_sym
.st_size
: 0;
5438 if (bfd_is_abs_section (sec
)
5440 && type_ptr
->internal_elf_sym
.st_shndx
!= 0)
5442 /* This symbol is in a real ELF section which we did
5443 not create as a BFD section. Undo the mapping done
5444 by copy_private_symbol_data. */
5445 shndx
= type_ptr
->internal_elf_sym
.st_shndx
;
5449 shndx
= elf_onesymtab (abfd
);
5452 shndx
= elf_dynsymtab (abfd
);
5455 shndx
= elf_tdata (abfd
)->strtab_section
;
5458 shndx
= elf_tdata (abfd
)->shstrtab_section
;
5461 shndx
= elf_tdata (abfd
)->symtab_shndx_section
;
5469 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
5475 /* Writing this would be a hell of a lot easier if
5476 we had some decent documentation on bfd, and
5477 knew what to expect of the library, and what to
5478 demand of applications. For example, it
5479 appears that `objcopy' might not set the
5480 section of a symbol to be a section that is
5481 actually in the output file. */
5482 sec2
= bfd_get_section_by_name (abfd
, sec
->name
);
5485 _bfd_error_handler (_("\
5486 Unable to find equivalent output section for symbol '%s' from section '%s'"),
5487 syms
[idx
]->name
? syms
[idx
]->name
: "<Local sym>",
5489 bfd_set_error (bfd_error_invalid_operation
);
5490 _bfd_stringtab_free (stt
);
5494 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec2
);
5495 BFD_ASSERT (shndx
!= -1);
5499 sym
.st_shndx
= shndx
;
5502 if ((flags
& BSF_THREAD_LOCAL
) != 0)
5504 else if ((flags
& BSF_FUNCTION
) != 0)
5506 else if ((flags
& BSF_OBJECT
) != 0)
5511 if (syms
[idx
]->section
->flags
& SEC_THREAD_LOCAL
)
5514 /* Processor-specific types. */
5515 if (type_ptr
!= NULL
5516 && bed
->elf_backend_get_symbol_type
)
5517 type
= ((*bed
->elf_backend_get_symbol_type
)
5518 (&type_ptr
->internal_elf_sym
, type
));
5520 if (flags
& BSF_SECTION_SYM
)
5522 if (flags
& BSF_GLOBAL
)
5523 sym
.st_info
= ELF_ST_INFO (STB_GLOBAL
, STT_SECTION
);
5525 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_SECTION
);
5527 else if (bfd_is_com_section (syms
[idx
]->section
))
5528 sym
.st_info
= ELF_ST_INFO (STB_GLOBAL
, type
);
5529 else if (bfd_is_und_section (syms
[idx
]->section
))
5530 sym
.st_info
= ELF_ST_INFO (((flags
& BSF_WEAK
)
5534 else if (flags
& BSF_FILE
)
5535 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_FILE
);
5538 int bind
= STB_LOCAL
;
5540 if (flags
& BSF_LOCAL
)
5542 else if (flags
& BSF_WEAK
)
5544 else if (flags
& BSF_GLOBAL
)
5547 sym
.st_info
= ELF_ST_INFO (bind
, type
);
5550 if (type_ptr
!= NULL
)
5551 sym
.st_other
= type_ptr
->internal_elf_sym
.st_other
;
5555 bed
->s
->swap_symbol_out (abfd
, &sym
, outbound_syms
, outbound_shndx
);
5556 outbound_syms
+= bed
->s
->sizeof_sym
;
5557 if (outbound_shndx
!= NULL
)
5558 outbound_shndx
+= sizeof (Elf_External_Sym_Shndx
);
5562 symstrtab_hdr
->sh_size
= _bfd_stringtab_size (stt
);
5563 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
5565 symstrtab_hdr
->sh_flags
= 0;
5566 symstrtab_hdr
->sh_addr
= 0;
5567 symstrtab_hdr
->sh_entsize
= 0;
5568 symstrtab_hdr
->sh_link
= 0;
5569 symstrtab_hdr
->sh_info
= 0;
5570 symstrtab_hdr
->sh_addralign
= 1;
5575 /* Return the number of bytes required to hold the symtab vector.
5577 Note that we base it on the count plus 1, since we will null terminate
5578 the vector allocated based on this size. However, the ELF symbol table
5579 always has a dummy entry as symbol #0, so it ends up even. */
5582 _bfd_elf_get_symtab_upper_bound (abfd
)
5587 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->symtab_hdr
;
5589 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
5590 symtab_size
= (symcount
+ 1) * (sizeof (asymbol
*));
5592 symtab_size
-= sizeof (asymbol
*);
5598 _bfd_elf_get_dynamic_symtab_upper_bound (abfd
)
5603 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->dynsymtab_hdr
;
5605 if (elf_dynsymtab (abfd
) == 0)
5607 bfd_set_error (bfd_error_invalid_operation
);
5611 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
5612 symtab_size
= (symcount
+ 1) * (sizeof (asymbol
*));
5614 symtab_size
-= sizeof (asymbol
*);
5620 _bfd_elf_get_reloc_upper_bound (abfd
, asect
)
5621 bfd
*abfd ATTRIBUTE_UNUSED
;
5624 return (asect
->reloc_count
+ 1) * sizeof (arelent
*);
5627 /* Canonicalize the relocs. */
5630 _bfd_elf_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
5638 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
5640 if (! bed
->s
->slurp_reloc_table (abfd
, section
, symbols
, FALSE
))
5643 tblptr
= section
->relocation
;
5644 for (i
= 0; i
< section
->reloc_count
; i
++)
5645 *relptr
++ = tblptr
++;
5649 return section
->reloc_count
;
5653 _bfd_elf_get_symtab (abfd
, alocation
)
5655 asymbol
**alocation
;
5657 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
5658 long symcount
= bed
->s
->slurp_symbol_table (abfd
, alocation
, FALSE
);
5661 bfd_get_symcount (abfd
) = symcount
;
5666 _bfd_elf_canonicalize_dynamic_symtab (abfd
, alocation
)
5668 asymbol
**alocation
;
5670 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
5671 long symcount
= bed
->s
->slurp_symbol_table (abfd
, alocation
, TRUE
);
5674 bfd_get_dynamic_symcount (abfd
) = symcount
;
5678 /* Return the size required for the dynamic reloc entries. Any
5679 section that was actually installed in the BFD, and has type
5680 SHT_REL or SHT_RELA, and uses the dynamic symbol table, is
5681 considered to be a dynamic reloc section. */
5684 _bfd_elf_get_dynamic_reloc_upper_bound (abfd
)
5690 if (elf_dynsymtab (abfd
) == 0)
5692 bfd_set_error (bfd_error_invalid_operation
);
5696 ret
= sizeof (arelent
*);
5697 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
5698 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
5699 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_REL
5700 || elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
5701 ret
+= ((s
->_raw_size
/ elf_section_data (s
)->this_hdr
.sh_entsize
)
5702 * sizeof (arelent
*));
5707 /* Canonicalize the dynamic relocation entries. Note that we return
5708 the dynamic relocations as a single block, although they are
5709 actually associated with particular sections; the interface, which
5710 was designed for SunOS style shared libraries, expects that there
5711 is only one set of dynamic relocs. Any section that was actually
5712 installed in the BFD, and has type SHT_REL or SHT_RELA, and uses
5713 the dynamic symbol table, is considered to be a dynamic reloc
5717 _bfd_elf_canonicalize_dynamic_reloc (abfd
, storage
, syms
)
5722 bfd_boolean (*slurp_relocs
)
5723 PARAMS ((bfd
*, asection
*, asymbol
**, bfd_boolean
));
5727 if (elf_dynsymtab (abfd
) == 0)
5729 bfd_set_error (bfd_error_invalid_operation
);
5733 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
5735 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
5737 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
5738 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_REL
5739 || elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
5744 if (! (*slurp_relocs
) (abfd
, s
, syms
, TRUE
))
5746 count
= s
->_raw_size
/ elf_section_data (s
)->this_hdr
.sh_entsize
;
5748 for (i
= 0; i
< count
; i
++)
5759 /* Read in the version information. */
5762 _bfd_elf_slurp_version_tables (abfd
)
5765 bfd_byte
*contents
= NULL
;
5768 if (elf_dynverdef (abfd
) != 0)
5770 Elf_Internal_Shdr
*hdr
;
5771 Elf_External_Verdef
*everdef
;
5772 Elf_Internal_Verdef
*iverdef
;
5773 Elf_Internal_Verdef
*iverdefarr
;
5774 Elf_Internal_Verdef iverdefmem
;
5776 unsigned int maxidx
;
5778 hdr
= &elf_tdata (abfd
)->dynverdef_hdr
;
5780 contents
= (bfd_byte
*) bfd_malloc (hdr
->sh_size
);
5781 if (contents
== NULL
)
5783 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
5784 || bfd_bread ((PTR
) contents
, hdr
->sh_size
, abfd
) != hdr
->sh_size
)
5787 /* We know the number of entries in the section but not the maximum
5788 index. Therefore we have to run through all entries and find
5790 everdef
= (Elf_External_Verdef
*) contents
;
5792 for (i
= 0; i
< hdr
->sh_info
; ++i
)
5794 _bfd_elf_swap_verdef_in (abfd
, everdef
, &iverdefmem
);
5796 if ((iverdefmem
.vd_ndx
& ((unsigned) VERSYM_VERSION
)) > maxidx
)
5797 maxidx
= iverdefmem
.vd_ndx
& ((unsigned) VERSYM_VERSION
);
5799 everdef
= ((Elf_External_Verdef
*)
5800 ((bfd_byte
*) everdef
+ iverdefmem
.vd_next
));
5803 amt
= (bfd_size_type
) maxidx
* sizeof (Elf_Internal_Verdef
);
5804 elf_tdata (abfd
)->verdef
= (Elf_Internal_Verdef
*) bfd_zalloc (abfd
, amt
);
5805 if (elf_tdata (abfd
)->verdef
== NULL
)
5808 elf_tdata (abfd
)->cverdefs
= maxidx
;
5810 everdef
= (Elf_External_Verdef
*) contents
;
5811 iverdefarr
= elf_tdata (abfd
)->verdef
;
5812 for (i
= 0; i
< hdr
->sh_info
; i
++)
5814 Elf_External_Verdaux
*everdaux
;
5815 Elf_Internal_Verdaux
*iverdaux
;
5818 _bfd_elf_swap_verdef_in (abfd
, everdef
, &iverdefmem
);
5820 iverdef
= &iverdefarr
[(iverdefmem
.vd_ndx
& VERSYM_VERSION
) - 1];
5821 memcpy (iverdef
, &iverdefmem
, sizeof (Elf_Internal_Verdef
));
5823 iverdef
->vd_bfd
= abfd
;
5825 amt
= (bfd_size_type
) iverdef
->vd_cnt
* sizeof (Elf_Internal_Verdaux
);
5826 iverdef
->vd_auxptr
= (Elf_Internal_Verdaux
*) bfd_alloc (abfd
, amt
);
5827 if (iverdef
->vd_auxptr
== NULL
)
5830 everdaux
= ((Elf_External_Verdaux
*)
5831 ((bfd_byte
*) everdef
+ iverdef
->vd_aux
));
5832 iverdaux
= iverdef
->vd_auxptr
;
5833 for (j
= 0; j
< iverdef
->vd_cnt
; j
++, iverdaux
++)
5835 _bfd_elf_swap_verdaux_in (abfd
, everdaux
, iverdaux
);
5837 iverdaux
->vda_nodename
=
5838 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
5839 iverdaux
->vda_name
);
5840 if (iverdaux
->vda_nodename
== NULL
)
5843 if (j
+ 1 < iverdef
->vd_cnt
)
5844 iverdaux
->vda_nextptr
= iverdaux
+ 1;
5846 iverdaux
->vda_nextptr
= NULL
;
5848 everdaux
= ((Elf_External_Verdaux
*)
5849 ((bfd_byte
*) everdaux
+ iverdaux
->vda_next
));
5852 iverdef
->vd_nodename
= iverdef
->vd_auxptr
->vda_nodename
;
5854 if (i
+ 1 < hdr
->sh_info
)
5855 iverdef
->vd_nextdef
= iverdef
+ 1;
5857 iverdef
->vd_nextdef
= NULL
;
5859 everdef
= ((Elf_External_Verdef
*)
5860 ((bfd_byte
*) everdef
+ iverdef
->vd_next
));
5867 if (elf_dynverref (abfd
) != 0)
5869 Elf_Internal_Shdr
*hdr
;
5870 Elf_External_Verneed
*everneed
;
5871 Elf_Internal_Verneed
*iverneed
;
5874 hdr
= &elf_tdata (abfd
)->dynverref_hdr
;
5876 amt
= (bfd_size_type
) hdr
->sh_info
* sizeof (Elf_Internal_Verneed
);
5877 elf_tdata (abfd
)->verref
=
5878 (Elf_Internal_Verneed
*) bfd_zalloc (abfd
, amt
);
5879 if (elf_tdata (abfd
)->verref
== NULL
)
5882 elf_tdata (abfd
)->cverrefs
= hdr
->sh_info
;
5884 contents
= (bfd_byte
*) bfd_malloc (hdr
->sh_size
);
5885 if (contents
== NULL
)
5887 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
5888 || bfd_bread ((PTR
) contents
, hdr
->sh_size
, abfd
) != hdr
->sh_size
)
5891 everneed
= (Elf_External_Verneed
*) contents
;
5892 iverneed
= elf_tdata (abfd
)->verref
;
5893 for (i
= 0; i
< hdr
->sh_info
; i
++, iverneed
++)
5895 Elf_External_Vernaux
*evernaux
;
5896 Elf_Internal_Vernaux
*ivernaux
;
5899 _bfd_elf_swap_verneed_in (abfd
, everneed
, iverneed
);
5901 iverneed
->vn_bfd
= abfd
;
5903 iverneed
->vn_filename
=
5904 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
5906 if (iverneed
->vn_filename
== NULL
)
5909 amt
= iverneed
->vn_cnt
;
5910 amt
*= sizeof (Elf_Internal_Vernaux
);
5911 iverneed
->vn_auxptr
= (Elf_Internal_Vernaux
*) bfd_alloc (abfd
, amt
);
5913 evernaux
= ((Elf_External_Vernaux
*)
5914 ((bfd_byte
*) everneed
+ iverneed
->vn_aux
));
5915 ivernaux
= iverneed
->vn_auxptr
;
5916 for (j
= 0; j
< iverneed
->vn_cnt
; j
++, ivernaux
++)
5918 _bfd_elf_swap_vernaux_in (abfd
, evernaux
, ivernaux
);
5920 ivernaux
->vna_nodename
=
5921 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
5922 ivernaux
->vna_name
);
5923 if (ivernaux
->vna_nodename
== NULL
)
5926 if (j
+ 1 < iverneed
->vn_cnt
)
5927 ivernaux
->vna_nextptr
= ivernaux
+ 1;
5929 ivernaux
->vna_nextptr
= NULL
;
5931 evernaux
= ((Elf_External_Vernaux
*)
5932 ((bfd_byte
*) evernaux
+ ivernaux
->vna_next
));
5935 if (i
+ 1 < hdr
->sh_info
)
5936 iverneed
->vn_nextref
= iverneed
+ 1;
5938 iverneed
->vn_nextref
= NULL
;
5940 everneed
= ((Elf_External_Verneed
*)
5941 ((bfd_byte
*) everneed
+ iverneed
->vn_next
));
5951 if (contents
!= NULL
)
5957 _bfd_elf_make_empty_symbol (abfd
)
5960 elf_symbol_type
*newsym
;
5961 bfd_size_type amt
= sizeof (elf_symbol_type
);
5963 newsym
= (elf_symbol_type
*) bfd_zalloc (abfd
, amt
);
5968 newsym
->symbol
.the_bfd
= abfd
;
5969 return &newsym
->symbol
;
5974 _bfd_elf_get_symbol_info (ignore_abfd
, symbol
, ret
)
5975 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
5979 bfd_symbol_info (symbol
, ret
);
5982 /* Return whether a symbol name implies a local symbol. Most targets
5983 use this function for the is_local_label_name entry point, but some
5987 _bfd_elf_is_local_label_name (abfd
, name
)
5988 bfd
*abfd ATTRIBUTE_UNUSED
;
5991 /* Normal local symbols start with ``.L''. */
5992 if (name
[0] == '.' && name
[1] == 'L')
5995 /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate
5996 DWARF debugging symbols starting with ``..''. */
5997 if (name
[0] == '.' && name
[1] == '.')
6000 /* gcc will sometimes generate symbols beginning with ``_.L_'' when
6001 emitting DWARF debugging output. I suspect this is actually a
6002 small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call
6003 ASM_GENERATE_INTERNAL_LABEL, and this causes the leading
6004 underscore to be emitted on some ELF targets). For ease of use,
6005 we treat such symbols as local. */
6006 if (name
[0] == '_' && name
[1] == '.' && name
[2] == 'L' && name
[3] == '_')
6013 _bfd_elf_get_lineno (ignore_abfd
, symbol
)
6014 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
6015 asymbol
*symbol ATTRIBUTE_UNUSED
;
6022 _bfd_elf_set_arch_mach (abfd
, arch
, machine
)
6024 enum bfd_architecture arch
;
6025 unsigned long machine
;
6027 /* If this isn't the right architecture for this backend, and this
6028 isn't the generic backend, fail. */
6029 if (arch
!= get_elf_backend_data (abfd
)->arch
6030 && arch
!= bfd_arch_unknown
6031 && get_elf_backend_data (abfd
)->arch
!= bfd_arch_unknown
)
6034 return bfd_default_set_arch_mach (abfd
, arch
, machine
);
6037 /* Find the function to a particular section and offset,
6038 for error reporting. */
6041 elf_find_function (abfd
, section
, symbols
, offset
,
6042 filename_ptr
, functionname_ptr
)
6043 bfd
*abfd ATTRIBUTE_UNUSED
;
6047 const char **filename_ptr
;
6048 const char **functionname_ptr
;
6050 const char *filename
;
6059 for (p
= symbols
; *p
!= NULL
; p
++)
6063 q
= (elf_symbol_type
*) *p
;
6065 if (bfd_get_section (&q
->symbol
) != section
)
6068 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
6073 filename
= bfd_asymbol_name (&q
->symbol
);
6077 if (q
->symbol
.section
== section
6078 && q
->symbol
.value
>= low_func
6079 && q
->symbol
.value
<= offset
)
6081 func
= (asymbol
*) q
;
6082 low_func
= q
->symbol
.value
;
6092 *filename_ptr
= filename
;
6093 if (functionname_ptr
)
6094 *functionname_ptr
= bfd_asymbol_name (func
);
6099 /* Find the nearest line to a particular section and offset,
6100 for error reporting. */
6103 _bfd_elf_find_nearest_line (abfd
, section
, symbols
, offset
,
6104 filename_ptr
, functionname_ptr
, line_ptr
)
6109 const char **filename_ptr
;
6110 const char **functionname_ptr
;
6111 unsigned int *line_ptr
;
6115 if (_bfd_dwarf1_find_nearest_line (abfd
, section
, symbols
, offset
,
6116 filename_ptr
, functionname_ptr
,
6119 if (!*functionname_ptr
)
6120 elf_find_function (abfd
, section
, symbols
, offset
,
6121 *filename_ptr
? NULL
: filename_ptr
,
6127 if (_bfd_dwarf2_find_nearest_line (abfd
, section
, symbols
, offset
,
6128 filename_ptr
, functionname_ptr
,
6130 &elf_tdata (abfd
)->dwarf2_find_line_info
))
6132 if (!*functionname_ptr
)
6133 elf_find_function (abfd
, section
, symbols
, offset
,
6134 *filename_ptr
? NULL
: filename_ptr
,
6140 if (! _bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
6141 &found
, filename_ptr
,
6142 functionname_ptr
, line_ptr
,
6143 &elf_tdata (abfd
)->line_info
))
6145 if (found
&& (*functionname_ptr
|| *line_ptr
))
6148 if (symbols
== NULL
)
6151 if (! elf_find_function (abfd
, section
, symbols
, offset
,
6152 filename_ptr
, functionname_ptr
))
6160 _bfd_elf_sizeof_headers (abfd
, reloc
)
6166 ret
= get_elf_backend_data (abfd
)->s
->sizeof_ehdr
;
6168 ret
+= get_program_header_size (abfd
);
6173 _bfd_elf_set_section_contents (abfd
, section
, location
, offset
, count
)
6178 bfd_size_type count
;
6180 Elf_Internal_Shdr
*hdr
;
6183 if (! abfd
->output_has_begun
6184 && ! (_bfd_elf_compute_section_file_positions
6185 (abfd
, (struct bfd_link_info
*) NULL
)))
6188 hdr
= &elf_section_data (section
)->this_hdr
;
6189 pos
= hdr
->sh_offset
+ offset
;
6190 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0
6191 || bfd_bwrite (location
, count
, abfd
) != count
)
6198 _bfd_elf_no_info_to_howto (abfd
, cache_ptr
, dst
)
6199 bfd
*abfd ATTRIBUTE_UNUSED
;
6200 arelent
*cache_ptr ATTRIBUTE_UNUSED
;
6201 Elf_Internal_Rela
*dst ATTRIBUTE_UNUSED
;
6206 /* Try to convert a non-ELF reloc into an ELF one. */
6209 _bfd_elf_validate_reloc (abfd
, areloc
)
6213 /* Check whether we really have an ELF howto. */
6215 if ((*areloc
->sym_ptr_ptr
)->the_bfd
->xvec
!= abfd
->xvec
)
6217 bfd_reloc_code_real_type code
;
6218 reloc_howto_type
*howto
;
6220 /* Alien reloc: Try to determine its type to replace it with an
6221 equivalent ELF reloc. */
6223 if (areloc
->howto
->pc_relative
)
6225 switch (areloc
->howto
->bitsize
)
6228 code
= BFD_RELOC_8_PCREL
;
6231 code
= BFD_RELOC_12_PCREL
;
6234 code
= BFD_RELOC_16_PCREL
;
6237 code
= BFD_RELOC_24_PCREL
;
6240 code
= BFD_RELOC_32_PCREL
;
6243 code
= BFD_RELOC_64_PCREL
;
6249 howto
= bfd_reloc_type_lookup (abfd
, code
);
6251 if (areloc
->howto
->pcrel_offset
!= howto
->pcrel_offset
)
6253 if (howto
->pcrel_offset
)
6254 areloc
->addend
+= areloc
->address
;
6256 areloc
->addend
-= areloc
->address
; /* addend is unsigned!! */
6261 switch (areloc
->howto
->bitsize
)
6267 code
= BFD_RELOC_14
;
6270 code
= BFD_RELOC_16
;
6273 code
= BFD_RELOC_26
;
6276 code
= BFD_RELOC_32
;
6279 code
= BFD_RELOC_64
;
6285 howto
= bfd_reloc_type_lookup (abfd
, code
);
6289 areloc
->howto
= howto
;
6297 (*_bfd_error_handler
)
6298 (_("%s: unsupported relocation type %s"),
6299 bfd_archive_filename (abfd
), areloc
->howto
->name
);
6300 bfd_set_error (bfd_error_bad_value
);
6305 _bfd_elf_close_and_cleanup (abfd
)
6308 if (bfd_get_format (abfd
) == bfd_object
)
6310 if (elf_shstrtab (abfd
) != NULL
)
6311 _bfd_elf_strtab_free (elf_shstrtab (abfd
));
6314 return _bfd_generic_close_and_cleanup (abfd
);
6317 /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY
6318 in the relocation's offset. Thus we cannot allow any sort of sanity
6319 range-checking to interfere. There is nothing else to do in processing
6322 bfd_reloc_status_type
6323 _bfd_elf_rel_vtable_reloc_fn (abfd
, re
, symbol
, data
, is
, obfd
, errmsg
)
6324 bfd
*abfd ATTRIBUTE_UNUSED
;
6325 arelent
*re ATTRIBUTE_UNUSED
;
6326 struct symbol_cache_entry
*symbol ATTRIBUTE_UNUSED
;
6327 PTR data ATTRIBUTE_UNUSED
;
6328 asection
*is ATTRIBUTE_UNUSED
;
6329 bfd
*obfd ATTRIBUTE_UNUSED
;
6330 char **errmsg ATTRIBUTE_UNUSED
;
6332 return bfd_reloc_ok
;
6335 /* Elf core file support. Much of this only works on native
6336 toolchains, since we rely on knowing the
6337 machine-dependent procfs structure in order to pick
6338 out details about the corefile. */
6340 #ifdef HAVE_SYS_PROCFS_H
6341 # include <sys/procfs.h>
6344 /* FIXME: this is kinda wrong, but it's what gdb wants. */
6347 elfcore_make_pid (abfd
)
6350 return ((elf_tdata (abfd
)->core_lwpid
<< 16)
6351 + (elf_tdata (abfd
)->core_pid
));
6354 /* If there isn't a section called NAME, make one, using
6355 data from SECT. Note, this function will generate a
6356 reference to NAME, so you shouldn't deallocate or
6360 elfcore_maybe_make_sect (abfd
, name
, sect
)
6367 if (bfd_get_section_by_name (abfd
, name
) != NULL
)
6370 sect2
= bfd_make_section (abfd
, name
);
6374 sect2
->_raw_size
= sect
->_raw_size
;
6375 sect2
->filepos
= sect
->filepos
;
6376 sect2
->flags
= sect
->flags
;
6377 sect2
->alignment_power
= sect
->alignment_power
;
6381 /* Create a pseudosection containing SIZE bytes at FILEPOS. This
6382 actually creates up to two pseudosections:
6383 - For the single-threaded case, a section named NAME, unless
6384 such a section already exists.
6385 - For the multi-threaded case, a section named "NAME/PID", where
6386 PID is elfcore_make_pid (abfd).
6387 Both pseudosections have identical contents. */
6389 _bfd_elfcore_make_pseudosection (abfd
, name
, size
, filepos
)
6396 char *threaded_name
;
6400 /* Build the section name. */
6402 sprintf (buf
, "%s/%d", name
, elfcore_make_pid (abfd
));
6403 len
= strlen (buf
) + 1;
6404 threaded_name
= bfd_alloc (abfd
, (bfd_size_type
) len
);
6405 if (threaded_name
== NULL
)
6407 memcpy (threaded_name
, buf
, len
);
6409 sect
= bfd_make_section (abfd
, threaded_name
);
6412 sect
->_raw_size
= size
;
6413 sect
->filepos
= filepos
;
6414 sect
->flags
= SEC_HAS_CONTENTS
;
6415 sect
->alignment_power
= 2;
6417 return elfcore_maybe_make_sect (abfd
, name
, sect
);
6420 /* prstatus_t exists on:
6422 linux 2.[01] + glibc
6426 #if defined (HAVE_PRSTATUS_T)
6427 static bfd_boolean elfcore_grok_prstatus
6428 PARAMS ((bfd
*, Elf_Internal_Note
*));
6431 elfcore_grok_prstatus (abfd
, note
)
6433 Elf_Internal_Note
*note
;
6438 if (note
->descsz
== sizeof (prstatus_t
))
6442 raw_size
= sizeof (prstat
.pr_reg
);
6443 offset
= offsetof (prstatus_t
, pr_reg
);
6444 memcpy (&prstat
, note
->descdata
, sizeof (prstat
));
6446 /* Do not overwrite the core signal if it
6447 has already been set by another thread. */
6448 if (elf_tdata (abfd
)->core_signal
== 0)
6449 elf_tdata (abfd
)->core_signal
= prstat
.pr_cursig
;
6450 elf_tdata (abfd
)->core_pid
= prstat
.pr_pid
;
6452 /* pr_who exists on:
6455 pr_who doesn't exist on:
6458 #if defined (HAVE_PRSTATUS_T_PR_WHO)
6459 elf_tdata (abfd
)->core_lwpid
= prstat
.pr_who
;
6462 #if defined (HAVE_PRSTATUS32_T)
6463 else if (note
->descsz
== sizeof (prstatus32_t
))
6465 /* 64-bit host, 32-bit corefile */
6466 prstatus32_t prstat
;
6468 raw_size
= sizeof (prstat
.pr_reg
);
6469 offset
= offsetof (prstatus32_t
, pr_reg
);
6470 memcpy (&prstat
, note
->descdata
, sizeof (prstat
));
6472 /* Do not overwrite the core signal if it
6473 has already been set by another thread. */
6474 if (elf_tdata (abfd
)->core_signal
== 0)
6475 elf_tdata (abfd
)->core_signal
= prstat
.pr_cursig
;
6476 elf_tdata (abfd
)->core_pid
= prstat
.pr_pid
;
6478 /* pr_who exists on:
6481 pr_who doesn't exist on:
6484 #if defined (HAVE_PRSTATUS32_T_PR_WHO)
6485 elf_tdata (abfd
)->core_lwpid
= prstat
.pr_who
;
6488 #endif /* HAVE_PRSTATUS32_T */
6491 /* Fail - we don't know how to handle any other
6492 note size (ie. data object type). */
6496 /* Make a ".reg/999" section and a ".reg" section. */
6497 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
6498 raw_size
, note
->descpos
+ offset
);
6500 #endif /* defined (HAVE_PRSTATUS_T) */
6502 /* Create a pseudosection containing the exact contents of NOTE. */
6504 elfcore_make_note_pseudosection (abfd
, name
, note
)
6507 Elf_Internal_Note
*note
;
6509 return _bfd_elfcore_make_pseudosection (abfd
, name
,
6510 note
->descsz
, note
->descpos
);
6513 /* There isn't a consistent prfpregset_t across platforms,
6514 but it doesn't matter, because we don't have to pick this
6515 data structure apart. */
6518 elfcore_grok_prfpreg (abfd
, note
)
6520 Elf_Internal_Note
*note
;
6522 return elfcore_make_note_pseudosection (abfd
, ".reg2", note
);
6525 /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note
6526 type of 5 (NT_PRXFPREG). Just include the whole note's contents
6530 elfcore_grok_prxfpreg (abfd
, note
)
6532 Elf_Internal_Note
*note
;
6534 return elfcore_make_note_pseudosection (abfd
, ".reg-xfp", note
);
6537 #if defined (HAVE_PRPSINFO_T)
6538 typedef prpsinfo_t elfcore_psinfo_t
;
6539 #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */
6540 typedef prpsinfo32_t elfcore_psinfo32_t
;
6544 #if defined (HAVE_PSINFO_T)
6545 typedef psinfo_t elfcore_psinfo_t
;
6546 #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */
6547 typedef psinfo32_t elfcore_psinfo32_t
;
6551 /* return a malloc'ed copy of a string at START which is at
6552 most MAX bytes long, possibly without a terminating '\0'.
6553 the copy will always have a terminating '\0'. */
6556 _bfd_elfcore_strndup (abfd
, start
, max
)
6562 char *end
= memchr (start
, '\0', max
);
6570 dups
= bfd_alloc (abfd
, (bfd_size_type
) len
+ 1);
6574 memcpy (dups
, start
, len
);
6580 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
6581 static bfd_boolean elfcore_grok_psinfo
6582 PARAMS ((bfd
*, Elf_Internal_Note
*));
6585 elfcore_grok_psinfo (abfd
, note
)
6587 Elf_Internal_Note
*note
;
6589 if (note
->descsz
== sizeof (elfcore_psinfo_t
))
6591 elfcore_psinfo_t psinfo
;
6593 memcpy (&psinfo
, note
->descdata
, sizeof (psinfo
));
6595 elf_tdata (abfd
)->core_program
6596 = _bfd_elfcore_strndup (abfd
, psinfo
.pr_fname
,
6597 sizeof (psinfo
.pr_fname
));
6599 elf_tdata (abfd
)->core_command
6600 = _bfd_elfcore_strndup (abfd
, psinfo
.pr_psargs
,
6601 sizeof (psinfo
.pr_psargs
));
6603 #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T)
6604 else if (note
->descsz
== sizeof (elfcore_psinfo32_t
))
6606 /* 64-bit host, 32-bit corefile */
6607 elfcore_psinfo32_t psinfo
;
6609 memcpy (&psinfo
, note
->descdata
, sizeof (psinfo
));
6611 elf_tdata (abfd
)->core_program
6612 = _bfd_elfcore_strndup (abfd
, psinfo
.pr_fname
,
6613 sizeof (psinfo
.pr_fname
));
6615 elf_tdata (abfd
)->core_command
6616 = _bfd_elfcore_strndup (abfd
, psinfo
.pr_psargs
,
6617 sizeof (psinfo
.pr_psargs
));
6623 /* Fail - we don't know how to handle any other
6624 note size (ie. data object type). */
6628 /* Note that for some reason, a spurious space is tacked
6629 onto the end of the args in some (at least one anyway)
6630 implementations, so strip it off if it exists. */
6633 char *command
= elf_tdata (abfd
)->core_command
;
6634 int n
= strlen (command
);
6636 if (0 < n
&& command
[n
- 1] == ' ')
6637 command
[n
- 1] = '\0';
6642 #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */
6644 #if defined (HAVE_PSTATUS_T)
6645 static bfd_boolean elfcore_grok_pstatus
6646 PARAMS ((bfd
*, Elf_Internal_Note
*));
6649 elfcore_grok_pstatus (abfd
, note
)
6651 Elf_Internal_Note
*note
;
6653 if (note
->descsz
== sizeof (pstatus_t
)
6654 #if defined (HAVE_PXSTATUS_T)
6655 || note
->descsz
== sizeof (pxstatus_t
)
6661 memcpy (&pstat
, note
->descdata
, sizeof (pstat
));
6663 elf_tdata (abfd
)->core_pid
= pstat
.pr_pid
;
6665 #if defined (HAVE_PSTATUS32_T)
6666 else if (note
->descsz
== sizeof (pstatus32_t
))
6668 /* 64-bit host, 32-bit corefile */
6671 memcpy (&pstat
, note
->descdata
, sizeof (pstat
));
6673 elf_tdata (abfd
)->core_pid
= pstat
.pr_pid
;
6676 /* Could grab some more details from the "representative"
6677 lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an
6678 NT_LWPSTATUS note, presumably. */
6682 #endif /* defined (HAVE_PSTATUS_T) */
6684 #if defined (HAVE_LWPSTATUS_T)
6685 static bfd_boolean elfcore_grok_lwpstatus
6686 PARAMS ((bfd
*, Elf_Internal_Note
*));
6689 elfcore_grok_lwpstatus (abfd
, note
)
6691 Elf_Internal_Note
*note
;
6693 lwpstatus_t lwpstat
;
6699 if (note
->descsz
!= sizeof (lwpstat
)
6700 #if defined (HAVE_LWPXSTATUS_T)
6701 && note
->descsz
!= sizeof (lwpxstatus_t
)
6706 memcpy (&lwpstat
, note
->descdata
, sizeof (lwpstat
));
6708 elf_tdata (abfd
)->core_lwpid
= lwpstat
.pr_lwpid
;
6709 elf_tdata (abfd
)->core_signal
= lwpstat
.pr_cursig
;
6711 /* Make a ".reg/999" section. */
6713 sprintf (buf
, ".reg/%d", elfcore_make_pid (abfd
));
6714 len
= strlen (buf
) + 1;
6715 name
= bfd_alloc (abfd
, (bfd_size_type
) len
);
6718 memcpy (name
, buf
, len
);
6720 sect
= bfd_make_section (abfd
, name
);
6724 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
6725 sect
->_raw_size
= sizeof (lwpstat
.pr_context
.uc_mcontext
.gregs
);
6726 sect
->filepos
= note
->descpos
6727 + offsetof (lwpstatus_t
, pr_context
.uc_mcontext
.gregs
);
6730 #if defined (HAVE_LWPSTATUS_T_PR_REG)
6731 sect
->_raw_size
= sizeof (lwpstat
.pr_reg
);
6732 sect
->filepos
= note
->descpos
+ offsetof (lwpstatus_t
, pr_reg
);
6735 sect
->flags
= SEC_HAS_CONTENTS
;
6736 sect
->alignment_power
= 2;
6738 if (!elfcore_maybe_make_sect (abfd
, ".reg", sect
))
6741 /* Make a ".reg2/999" section */
6743 sprintf (buf
, ".reg2/%d", elfcore_make_pid (abfd
));
6744 len
= strlen (buf
) + 1;
6745 name
= bfd_alloc (abfd
, (bfd_size_type
) len
);
6748 memcpy (name
, buf
, len
);
6750 sect
= bfd_make_section (abfd
, name
);
6754 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
6755 sect
->_raw_size
= sizeof (lwpstat
.pr_context
.uc_mcontext
.fpregs
);
6756 sect
->filepos
= note
->descpos
6757 + offsetof (lwpstatus_t
, pr_context
.uc_mcontext
.fpregs
);
6760 #if defined (HAVE_LWPSTATUS_T_PR_FPREG)
6761 sect
->_raw_size
= sizeof (lwpstat
.pr_fpreg
);
6762 sect
->filepos
= note
->descpos
+ offsetof (lwpstatus_t
, pr_fpreg
);
6765 sect
->flags
= SEC_HAS_CONTENTS
;
6766 sect
->alignment_power
= 2;
6768 return elfcore_maybe_make_sect (abfd
, ".reg2", sect
);
6770 #endif /* defined (HAVE_LWPSTATUS_T) */
6772 #if defined (HAVE_WIN32_PSTATUS_T)
6774 elfcore_grok_win32pstatus (abfd
, note
)
6776 Elf_Internal_Note
*note
;
6782 win32_pstatus_t pstatus
;
6784 if (note
->descsz
< sizeof (pstatus
))
6787 memcpy (&pstatus
, note
->descdata
, sizeof (pstatus
));
6789 switch (pstatus
.data_type
)
6791 case NOTE_INFO_PROCESS
:
6792 /* FIXME: need to add ->core_command. */
6793 elf_tdata (abfd
)->core_signal
= pstatus
.data
.process_info
.signal
;
6794 elf_tdata (abfd
)->core_pid
= pstatus
.data
.process_info
.pid
;
6797 case NOTE_INFO_THREAD
:
6798 /* Make a ".reg/999" section. */
6799 sprintf (buf
, ".reg/%d", pstatus
.data
.thread_info
.tid
);
6801 len
= strlen (buf
) + 1;
6802 name
= bfd_alloc (abfd
, (bfd_size_type
) len
);
6806 memcpy (name
, buf
, len
);
6808 sect
= bfd_make_section (abfd
, name
);
6812 sect
->_raw_size
= sizeof (pstatus
.data
.thread_info
.thread_context
);
6813 sect
->filepos
= (note
->descpos
6814 + offsetof (struct win32_pstatus
,
6815 data
.thread_info
.thread_context
));
6816 sect
->flags
= SEC_HAS_CONTENTS
;
6817 sect
->alignment_power
= 2;
6819 if (pstatus
.data
.thread_info
.is_active_thread
)
6820 if (! elfcore_maybe_make_sect (abfd
, ".reg", sect
))
6824 case NOTE_INFO_MODULE
:
6825 /* Make a ".module/xxxxxxxx" section. */
6826 sprintf (buf
, ".module/%08x", pstatus
.data
.module_info
.base_address
);
6828 len
= strlen (buf
) + 1;
6829 name
= bfd_alloc (abfd
, (bfd_size_type
) len
);
6833 memcpy (name
, buf
, len
);
6835 sect
= bfd_make_section (abfd
, name
);
6840 sect
->_raw_size
= note
->descsz
;
6841 sect
->filepos
= note
->descpos
;
6842 sect
->flags
= SEC_HAS_CONTENTS
;
6843 sect
->alignment_power
= 2;
6852 #endif /* HAVE_WIN32_PSTATUS_T */
6855 elfcore_grok_note (abfd
, note
)
6857 Elf_Internal_Note
*note
;
6859 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
6867 if (bed
->elf_backend_grok_prstatus
)
6868 if ((*bed
->elf_backend_grok_prstatus
) (abfd
, note
))
6870 #if defined (HAVE_PRSTATUS_T)
6871 return elfcore_grok_prstatus (abfd
, note
);
6876 #if defined (HAVE_PSTATUS_T)
6878 return elfcore_grok_pstatus (abfd
, note
);
6881 #if defined (HAVE_LWPSTATUS_T)
6883 return elfcore_grok_lwpstatus (abfd
, note
);
6886 case NT_FPREGSET
: /* FIXME: rename to NT_PRFPREG */
6887 return elfcore_grok_prfpreg (abfd
, note
);
6889 #if defined (HAVE_WIN32_PSTATUS_T)
6890 case NT_WIN32PSTATUS
:
6891 return elfcore_grok_win32pstatus (abfd
, note
);
6894 case NT_PRXFPREG
: /* Linux SSE extension */
6895 if (note
->namesz
== 6
6896 && strcmp (note
->namedata
, "LINUX") == 0)
6897 return elfcore_grok_prxfpreg (abfd
, note
);
6903 if (bed
->elf_backend_grok_psinfo
)
6904 if ((*bed
->elf_backend_grok_psinfo
) (abfd
, note
))
6906 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
6907 return elfcore_grok_psinfo (abfd
, note
);
6914 asection
*sect
= bfd_make_section (abfd
, ".auxv");
6918 sect
->_raw_size
= note
->descsz
;
6919 sect
->filepos
= note
->descpos
;
6920 sect
->flags
= SEC_HAS_CONTENTS
;
6921 sect
->alignment_power
= 1 + bfd_get_arch_size (abfd
) / 32;
6929 elfcore_netbsd_get_lwpid (note
, lwpidp
)
6930 Elf_Internal_Note
*note
;
6935 cp
= strchr (note
->namedata
, '@');
6938 *lwpidp
= atoi(cp
+ 1);
6945 elfcore_grok_netbsd_procinfo (abfd
, note
)
6947 Elf_Internal_Note
*note
;
6950 /* Signal number at offset 0x08. */
6951 elf_tdata (abfd
)->core_signal
6952 = bfd_h_get_32 (abfd
, (bfd_byte
*) note
->descdata
+ 0x08);
6954 /* Process ID at offset 0x50. */
6955 elf_tdata (abfd
)->core_pid
6956 = bfd_h_get_32 (abfd
, (bfd_byte
*) note
->descdata
+ 0x50);
6958 /* Command name at 0x7c (max 32 bytes, including nul). */
6959 elf_tdata (abfd
)->core_command
6960 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 0x7c, 31);
6966 elfcore_grok_netbsd_note (abfd
, note
)
6968 Elf_Internal_Note
*note
;
6972 if (elfcore_netbsd_get_lwpid (note
, &lwp
))
6973 elf_tdata (abfd
)->core_lwpid
= lwp
;
6975 if (note
->type
== NT_NETBSDCORE_PROCINFO
)
6977 /* NetBSD-specific core "procinfo". Note that we expect to
6978 find this note before any of the others, which is fine,
6979 since the kernel writes this note out first when it
6980 creates a core file. */
6982 return elfcore_grok_netbsd_procinfo (abfd
, note
);
6985 /* As of Jan 2002 there are no other machine-independent notes
6986 defined for NetBSD core files. If the note type is less
6987 than the start of the machine-dependent note types, we don't
6990 if (note
->type
< NT_NETBSDCORE_FIRSTMACH
)
6994 switch (bfd_get_arch (abfd
))
6996 /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and
6997 PT_GETFPREGS == mach+2. */
6999 case bfd_arch_alpha
:
7000 case bfd_arch_sparc
:
7003 case NT_NETBSDCORE_FIRSTMACH
+0:
7004 return elfcore_make_note_pseudosection (abfd
, ".reg", note
);
7006 case NT_NETBSDCORE_FIRSTMACH
+2:
7007 return elfcore_make_note_pseudosection (abfd
, ".reg2", note
);
7013 /* On all other arch's, PT_GETREGS == mach+1 and
7014 PT_GETFPREGS == mach+3. */
7019 case NT_NETBSDCORE_FIRSTMACH
+1:
7020 return elfcore_make_note_pseudosection (abfd
, ".reg", note
);
7022 case NT_NETBSDCORE_FIRSTMACH
+3:
7023 return elfcore_make_note_pseudosection (abfd
, ".reg2", note
);
7033 elfcore_grok_nto_status (abfd
, note
, tid
)
7035 Elf_Internal_Note
*note
;
7038 void *ddata
= note
->descdata
;
7045 /* nto_procfs_status 'pid' field is at offset 0. */
7046 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, (bfd_byte
*) ddata
);
7048 /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */
7049 *tid
= bfd_get_32 (abfd
, (bfd_byte
*) ddata
+ 4);
7051 /* nto_procfs_status 'flags' field is at offset 8. */
7052 flags
= bfd_get_32 (abfd
, (bfd_byte
*) ddata
+ 8);
7054 /* nto_procfs_status 'what' field is at offset 14. */
7055 if ((sig
= bfd_get_16 (abfd
, (bfd_byte
*) ddata
+ 14)) > 0)
7057 elf_tdata (abfd
)->core_signal
= sig
;
7058 elf_tdata (abfd
)->core_lwpid
= *tid
;
7061 /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores
7062 do not come from signals so we make sure we set the current
7063 thread just in case. */
7064 if (flags
& 0x00000080)
7065 elf_tdata (abfd
)->core_lwpid
= *tid
;
7067 /* Make a ".qnx_core_status/%d" section. */
7068 sprintf (buf
, ".qnx_core_status/%d", *tid
);
7070 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
7075 sect
= bfd_make_section (abfd
, name
);
7079 sect
->_raw_size
= note
->descsz
;
7080 sect
->filepos
= note
->descpos
;
7081 sect
->flags
= SEC_HAS_CONTENTS
;
7082 sect
->alignment_power
= 2;
7084 return (elfcore_maybe_make_sect (abfd
, ".qnx_core_status", sect
));
7088 elfcore_grok_nto_gregs (abfd
, note
, tid
)
7090 Elf_Internal_Note
*note
;
7097 /* Make a ".reg/%d" section. */
7098 sprintf (buf
, ".reg/%d", tid
);
7100 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
7105 sect
= bfd_make_section (abfd
, name
);
7109 sect
->_raw_size
= note
->descsz
;
7110 sect
->filepos
= note
->descpos
;
7111 sect
->flags
= SEC_HAS_CONTENTS
;
7112 sect
->alignment_power
= 2;
7114 /* This is the current thread. */
7115 if (elf_tdata (abfd
)->core_lwpid
== tid
)
7116 return elfcore_maybe_make_sect (abfd
, ".reg", sect
);
7121 #define BFD_QNT_CORE_INFO 7
7122 #define BFD_QNT_CORE_STATUS 8
7123 #define BFD_QNT_CORE_GREG 9
7124 #define BFD_QNT_CORE_FPREG 10
7127 elfcore_grok_nto_note (abfd
, note
)
7129 Elf_Internal_Note
*note
;
7131 /* Every GREG section has a STATUS section before it. Store the
7132 tid from the previous call to pass down to the next gregs
7134 static pid_t tid
= 1;
7138 case BFD_QNT_CORE_INFO
: return elfcore_make_note_pseudosection (abfd
, ".qnx_core_info", note
);
7139 case BFD_QNT_CORE_STATUS
: return elfcore_grok_nto_status (abfd
, note
, &tid
);
7140 case BFD_QNT_CORE_GREG
: return elfcore_grok_nto_gregs (abfd
, note
, tid
);
7141 case BFD_QNT_CORE_FPREG
: return elfcore_grok_prfpreg (abfd
, note
);
7142 default: return TRUE
;
7146 /* Function: elfcore_write_note
7153 size of data for note
7156 End of buffer containing note. */
7159 elfcore_write_note (abfd
, buf
, bufsiz
, name
, type
, input
, size
)
7168 Elf_External_Note
*xnp
;
7178 struct elf_backend_data
*bed
;
7180 namesz
= strlen (name
) + 1;
7181 bed
= get_elf_backend_data (abfd
);
7182 pad
= -namesz
& ((1 << bed
->s
->log_file_align
) - 1);
7185 newspace
= sizeof (Elf_External_Note
) - 1 + namesz
+ pad
+ size
;
7187 p
= realloc (buf
, *bufsiz
+ newspace
);
7189 *bufsiz
+= newspace
;
7190 xnp
= (Elf_External_Note
*) dest
;
7191 H_PUT_32 (abfd
, namesz
, xnp
->namesz
);
7192 H_PUT_32 (abfd
, size
, xnp
->descsz
);
7193 H_PUT_32 (abfd
, type
, xnp
->type
);
7197 memcpy (dest
, name
, namesz
);
7205 memcpy (dest
, input
, size
);
7209 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
7211 elfcore_write_prpsinfo (abfd
, buf
, bufsiz
, fname
, psargs
)
7219 char *note_name
= "CORE";
7221 #if defined (HAVE_PSINFO_T)
7223 note_type
= NT_PSINFO
;
7226 note_type
= NT_PRPSINFO
;
7229 memset (&data
, 0, sizeof (data
));
7230 strncpy (data
.pr_fname
, fname
, sizeof (data
.pr_fname
));
7231 strncpy (data
.pr_psargs
, psargs
, sizeof (data
.pr_psargs
));
7232 return elfcore_write_note (abfd
, buf
, bufsiz
,
7233 note_name
, note_type
, &data
, sizeof (data
));
7235 #endif /* PSINFO_T or PRPSINFO_T */
7237 #if defined (HAVE_PRSTATUS_T)
7239 elfcore_write_prstatus (abfd
, buf
, bufsiz
, pid
, cursig
, gregs
)
7248 char *note_name
= "CORE";
7250 memset (&prstat
, 0, sizeof (prstat
));
7251 prstat
.pr_pid
= pid
;
7252 prstat
.pr_cursig
= cursig
;
7253 memcpy (&prstat
.pr_reg
, gregs
, sizeof (prstat
.pr_reg
));
7254 return elfcore_write_note (abfd
, buf
, bufsiz
,
7255 note_name
, NT_PRSTATUS
, &prstat
, sizeof (prstat
));
7257 #endif /* HAVE_PRSTATUS_T */
7259 #if defined (HAVE_LWPSTATUS_T)
7261 elfcore_write_lwpstatus (abfd
, buf
, bufsiz
, pid
, cursig
, gregs
)
7269 lwpstatus_t lwpstat
;
7270 char *note_name
= "CORE";
7272 memset (&lwpstat
, 0, sizeof (lwpstat
));
7273 lwpstat
.pr_lwpid
= pid
>> 16;
7274 lwpstat
.pr_cursig
= cursig
;
7275 #if defined (HAVE_LWPSTATUS_T_PR_REG)
7276 memcpy (lwpstat
.pr_reg
, gregs
, sizeof (lwpstat
.pr_reg
));
7277 #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
7279 memcpy (lwpstat
.pr_context
.uc_mcontext
.gregs
,
7280 gregs
, sizeof (lwpstat
.pr_context
.uc_mcontext
.gregs
));
7282 memcpy (lwpstat
.pr_context
.uc_mcontext
.__gregs
,
7283 gregs
, sizeof (lwpstat
.pr_context
.uc_mcontext
.__gregs
));
7286 return elfcore_write_note (abfd
, buf
, bufsiz
, note_name
,
7287 NT_LWPSTATUS
, &lwpstat
, sizeof (lwpstat
));
7289 #endif /* HAVE_LWPSTATUS_T */
7291 #if defined (HAVE_PSTATUS_T)
7293 elfcore_write_pstatus (abfd
, buf
, bufsiz
, pid
, cursig
, gregs
)
7302 char *note_name
= "CORE";
7304 memset (&pstat
, 0, sizeof (pstat
));
7305 pstat
.pr_pid
= pid
& 0xffff;
7306 buf
= elfcore_write_note (abfd
, buf
, bufsiz
, note_name
,
7307 NT_PSTATUS
, &pstat
, sizeof (pstat
));
7310 #endif /* HAVE_PSTATUS_T */
7313 elfcore_write_prfpreg (abfd
, buf
, bufsiz
, fpregs
, size
)
7320 char *note_name
= "CORE";
7321 return elfcore_write_note (abfd
, buf
, bufsiz
,
7322 note_name
, NT_FPREGSET
, fpregs
, size
);
7326 elfcore_write_prxfpreg (abfd
, buf
, bufsiz
, xfpregs
, size
)
7333 char *note_name
= "LINUX";
7334 return elfcore_write_note (abfd
, buf
, bufsiz
,
7335 note_name
, NT_PRXFPREG
, xfpregs
, size
);
7339 elfcore_read_notes (abfd
, offset
, size
)
7350 if (bfd_seek (abfd
, offset
, SEEK_SET
) != 0)
7353 buf
= bfd_malloc (size
);
7357 if (bfd_bread (buf
, size
, abfd
) != size
)
7365 while (p
< buf
+ size
)
7367 /* FIXME: bad alignment assumption. */
7368 Elf_External_Note
*xnp
= (Elf_External_Note
*) p
;
7369 Elf_Internal_Note in
;
7371 in
.type
= H_GET_32 (abfd
, xnp
->type
);
7373 in
.namesz
= H_GET_32 (abfd
, xnp
->namesz
);
7374 in
.namedata
= xnp
->name
;
7376 in
.descsz
= H_GET_32 (abfd
, xnp
->descsz
);
7377 in
.descdata
= in
.namedata
+ BFD_ALIGN (in
.namesz
, 4);
7378 in
.descpos
= offset
+ (in
.descdata
- buf
);
7380 if (strncmp (in
.namedata
, "NetBSD-CORE", 11) == 0)
7382 if (! elfcore_grok_netbsd_note (abfd
, &in
))
7385 else if (strncmp (in
.namedata
, "QNX", 3) == 0)
7387 if (! elfcore_grok_nto_note (abfd
, &in
))
7392 if (! elfcore_grok_note (abfd
, &in
))
7396 p
= in
.descdata
+ BFD_ALIGN (in
.descsz
, 4);
7403 /* Providing external access to the ELF program header table. */
7405 /* Return an upper bound on the number of bytes required to store a
7406 copy of ABFD's program header table entries. Return -1 if an error
7407 occurs; bfd_get_error will return an appropriate code. */
7410 bfd_get_elf_phdr_upper_bound (abfd
)
7413 if (abfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
7415 bfd_set_error (bfd_error_wrong_format
);
7419 return elf_elfheader (abfd
)->e_phnum
* sizeof (Elf_Internal_Phdr
);
7422 /* Copy ABFD's program header table entries to *PHDRS. The entries
7423 will be stored as an array of Elf_Internal_Phdr structures, as
7424 defined in include/elf/internal.h. To find out how large the
7425 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
7427 Return the number of program header table entries read, or -1 if an
7428 error occurs; bfd_get_error will return an appropriate code. */
7431 bfd_get_elf_phdrs (abfd
, phdrs
)
7437 if (abfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
7439 bfd_set_error (bfd_error_wrong_format
);
7443 num_phdrs
= elf_elfheader (abfd
)->e_phnum
;
7444 memcpy (phdrs
, elf_tdata (abfd
)->phdr
,
7445 num_phdrs
* sizeof (Elf_Internal_Phdr
));
7451 _bfd_elf_sprintf_vma (abfd
, buf
, value
)
7452 bfd
*abfd ATTRIBUTE_UNUSED
;
7457 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
7459 i_ehdrp
= elf_elfheader (abfd
);
7460 if (i_ehdrp
== NULL
)
7461 sprintf_vma (buf
, value
);
7464 if (i_ehdrp
->e_ident
[EI_CLASS
] == ELFCLASS64
)
7466 #if BFD_HOST_64BIT_LONG
7467 sprintf (buf
, "%016lx", value
);
7469 sprintf (buf
, "%08lx%08lx", _bfd_int64_high (value
),
7470 _bfd_int64_low (value
));
7474 sprintf (buf
, "%08lx", (unsigned long) (value
& 0xffffffff));
7477 sprintf_vma (buf
, value
);
7482 _bfd_elf_fprintf_vma (abfd
, stream
, value
)
7483 bfd
*abfd ATTRIBUTE_UNUSED
;
7488 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
7490 i_ehdrp
= elf_elfheader (abfd
);
7491 if (i_ehdrp
== NULL
)
7492 fprintf_vma ((FILE *) stream
, value
);
7495 if (i_ehdrp
->e_ident
[EI_CLASS
] == ELFCLASS64
)
7497 #if BFD_HOST_64BIT_LONG
7498 fprintf ((FILE *) stream
, "%016lx", value
);
7500 fprintf ((FILE *) stream
, "%08lx%08lx",
7501 _bfd_int64_high (value
), _bfd_int64_low (value
));
7505 fprintf ((FILE *) stream
, "%08lx",
7506 (unsigned long) (value
& 0xffffffff));
7509 fprintf_vma ((FILE *) stream
, value
);
7513 enum elf_reloc_type_class
7514 _bfd_elf_reloc_type_class (rela
)
7515 const Elf_Internal_Rela
*rela ATTRIBUTE_UNUSED
;
7517 return reloc_class_normal
;
7520 /* For RELA architectures, return the relocation value for a
7521 relocation against a local symbol. */
7524 _bfd_elf_rela_local_sym (abfd
, sym
, sec
, rel
)
7526 Elf_Internal_Sym
*sym
;
7528 Elf_Internal_Rela
*rel
;
7532 relocation
= (sec
->output_section
->vma
7533 + sec
->output_offset
7535 if ((sec
->flags
& SEC_MERGE
)
7536 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
7537 && sec
->sec_info_type
== ELF_INFO_TYPE_MERGE
)
7543 _bfd_merged_section_offset (abfd
, &msec
,
7544 elf_section_data (sec
)->sec_info
,
7545 sym
->st_value
+ rel
->r_addend
,
7548 rel
->r_addend
+= msec
->output_section
->vma
+ msec
->output_offset
;
7554 _bfd_elf_rel_local_sym (abfd
, sym
, psec
, addend
)
7556 Elf_Internal_Sym
*sym
;
7560 asection
*sec
= *psec
;
7562 if (sec
->sec_info_type
!= ELF_INFO_TYPE_MERGE
)
7563 return sym
->st_value
+ addend
;
7565 return _bfd_merged_section_offset (abfd
, psec
,
7566 elf_section_data (sec
)->sec_info
,
7567 sym
->st_value
+ addend
, (bfd_vma
) 0);
7571 _bfd_elf_section_offset (abfd
, info
, sec
, offset
)
7573 struct bfd_link_info
*info
;
7577 struct bfd_elf_section_data
*sec_data
;
7579 sec_data
= elf_section_data (sec
);
7580 switch (sec
->sec_info_type
)
7582 case ELF_INFO_TYPE_STABS
:
7583 return _bfd_stab_section_offset (abfd
,
7584 &elf_hash_table (info
)->merge_info
,
7585 sec
, &sec_data
->sec_info
, offset
);
7586 case ELF_INFO_TYPE_EH_FRAME
:
7587 return _bfd_elf_eh_frame_section_offset (abfd
, sec
, offset
);
7593 /* Create a new BFD as if by bfd_openr. Rather than opening a file,
7594 reconstruct an ELF file by reading the segments out of remote memory
7595 based on the ELF file header at EHDR_VMA and the ELF program headers it
7596 points to. If not null, *LOADBASEP is filled in with the difference
7597 between the VMAs from which the segments were read, and the VMAs the
7598 file headers (and hence BFD's idea of each section's VMA) put them at.
7600 The function TARGET_READ_MEMORY is called to copy LEN bytes from the
7601 remote memory at target address VMA into the local buffer at MYADDR; it
7602 should return zero on success or an `errno' code on failure. TEMPL must
7603 be a BFD for an ELF target with the word size and byte order found in
7604 the remote memory. */
7607 bfd_elf_bfd_from_remote_memory (templ
, ehdr_vma
, loadbasep
, target_read_memory
)
7611 int (*target_read_memory
) PARAMS ((bfd_vma vma
, char *myaddr
, int len
));
7613 return (*get_elf_backend_data (templ
)->elf_backend_bfd_from_remote_memory
)
7614 (templ
, ehdr_vma
, loadbasep
, target_read_memory
);