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 relocateable
940 output, and the reloc is against an external symbol, and nothing
941 has given us any additional addend, the resulting reloc will also
942 be against the same symbol. In such a case, we don't want to
943 change anything about the way the reloc is handled, since it will
944 all be done at final link time. Rather than put special case code
945 into bfd_perform_relocation, all the reloc types use this howto
946 function. It just short circuits the reloc if producing
947 relocateable output against an external symbol. */
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
->linker_section_pointer
= NULL
;
1432 ret
->verinfo
.verdef
= NULL
;
1433 ret
->vtable_entries_size
= 0;
1434 ret
->vtable_entries_used
= NULL
;
1435 ret
->vtable_parent
= NULL
;
1436 ret
->got
= htab
->init_refcount
;
1437 ret
->plt
= htab
->init_refcount
;
1439 ret
->type
= STT_NOTYPE
;
1441 /* Assume that we have been called by a non-ELF symbol reader.
1442 This flag is then reset by the code which reads an ELF input
1443 file. This ensures that a symbol created by a non-ELF symbol
1444 reader will have the flag set correctly. */
1445 ret
->elf_link_hash_flags
= ELF_LINK_NON_ELF
;
1451 /* Copy data from an indirect symbol to its direct symbol, hiding the
1452 old indirect symbol. Also used for copying flags to a weakdef. */
1455 _bfd_elf_link_hash_copy_indirect (bed
, dir
, ind
)
1456 struct elf_backend_data
*bed
;
1457 struct elf_link_hash_entry
*dir
, *ind
;
1460 bfd_signed_vma lowest_valid
= bed
->can_refcount
;
1462 /* Copy down any references that we may have already seen to the
1463 symbol which just became indirect. */
1465 dir
->elf_link_hash_flags
|=
1466 (ind
->elf_link_hash_flags
1467 & (ELF_LINK_HASH_REF_DYNAMIC
1468 | ELF_LINK_HASH_REF_REGULAR
1469 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
1470 | ELF_LINK_NON_GOT_REF
));
1472 if (ind
->root
.type
!= bfd_link_hash_indirect
)
1475 /* Copy over the global and procedure linkage table refcount entries.
1476 These may have been already set up by a check_relocs routine. */
1477 tmp
= dir
->got
.refcount
;
1478 if (tmp
< lowest_valid
)
1480 dir
->got
.refcount
= ind
->got
.refcount
;
1481 ind
->got
.refcount
= tmp
;
1484 BFD_ASSERT (ind
->got
.refcount
< lowest_valid
);
1486 tmp
= dir
->plt
.refcount
;
1487 if (tmp
< lowest_valid
)
1489 dir
->plt
.refcount
= ind
->plt
.refcount
;
1490 ind
->plt
.refcount
= tmp
;
1493 BFD_ASSERT (ind
->plt
.refcount
< lowest_valid
);
1495 if (dir
->dynindx
== -1)
1497 dir
->dynindx
= ind
->dynindx
;
1498 dir
->dynstr_index
= ind
->dynstr_index
;
1500 ind
->dynstr_index
= 0;
1503 BFD_ASSERT (ind
->dynindx
== -1);
1507 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
)
1508 struct bfd_link_info
*info
;
1509 struct elf_link_hash_entry
*h
;
1510 bfd_boolean force_local
;
1512 h
->plt
= elf_hash_table (info
)->init_offset
;
1513 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
1516 h
->elf_link_hash_flags
|= ELF_LINK_FORCED_LOCAL
;
1517 if (h
->dynindx
!= -1)
1520 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
1526 /* Initialize an ELF linker hash table. */
1529 _bfd_elf_link_hash_table_init (table
, abfd
, newfunc
)
1530 struct elf_link_hash_table
*table
;
1532 struct bfd_hash_entry
*(*newfunc
)
1533 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*,
1538 table
->dynamic_sections_created
= FALSE
;
1539 table
->dynobj
= NULL
;
1540 /* Make sure can_refcount is extended to the width and signedness of
1541 init_refcount before we subtract one from it. */
1542 table
->init_refcount
.refcount
= get_elf_backend_data (abfd
)->can_refcount
;
1543 table
->init_refcount
.refcount
-= 1;
1544 table
->init_offset
.offset
= -(bfd_vma
) 1;
1545 /* The first dynamic symbol is a dummy. */
1546 table
->dynsymcount
= 1;
1547 table
->dynstr
= NULL
;
1548 table
->bucketcount
= 0;
1549 table
->needed
= NULL
;
1551 table
->stab_info
= NULL
;
1552 table
->merge_info
= NULL
;
1553 memset (&table
->eh_info
, 0, sizeof (table
->eh_info
));
1554 table
->dynlocal
= NULL
;
1555 table
->runpath
= NULL
;
1556 table
->tls_segment
= NULL
;
1557 table
->loaded
= NULL
;
1559 ret
= _bfd_link_hash_table_init (&table
->root
, abfd
, newfunc
);
1560 table
->root
.type
= bfd_link_elf_hash_table
;
1565 /* Create an ELF linker hash table. */
1567 struct bfd_link_hash_table
*
1568 _bfd_elf_link_hash_table_create (abfd
)
1571 struct elf_link_hash_table
*ret
;
1572 bfd_size_type amt
= sizeof (struct elf_link_hash_table
);
1574 ret
= (struct elf_link_hash_table
*) bfd_malloc (amt
);
1575 if (ret
== (struct elf_link_hash_table
*) NULL
)
1578 if (! _bfd_elf_link_hash_table_init (ret
, abfd
, _bfd_elf_link_hash_newfunc
))
1587 /* This is a hook for the ELF emulation code in the generic linker to
1588 tell the backend linker what file name to use for the DT_NEEDED
1589 entry for a dynamic object. The generic linker passes name as an
1590 empty string to indicate that no DT_NEEDED entry should be made. */
1593 bfd_elf_set_dt_needed_name (abfd
, name
)
1597 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1598 && bfd_get_format (abfd
) == bfd_object
)
1599 elf_dt_name (abfd
) = name
;
1603 bfd_elf_set_dt_needed_soname (abfd
, name
)
1607 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1608 && bfd_get_format (abfd
) == bfd_object
)
1609 elf_dt_soname (abfd
) = name
;
1612 /* Get the list of DT_NEEDED entries for a link. This is a hook for
1613 the linker ELF emulation code. */
1615 struct bfd_link_needed_list
*
1616 bfd_elf_get_needed_list (abfd
, info
)
1617 bfd
*abfd ATTRIBUTE_UNUSED
;
1618 struct bfd_link_info
*info
;
1620 if (! is_elf_hash_table (info
))
1622 return elf_hash_table (info
)->needed
;
1625 /* Get the list of DT_RPATH/DT_RUNPATH entries for a link. This is a
1626 hook for the linker ELF emulation code. */
1628 struct bfd_link_needed_list
*
1629 bfd_elf_get_runpath_list (abfd
, info
)
1630 bfd
*abfd ATTRIBUTE_UNUSED
;
1631 struct bfd_link_info
*info
;
1633 if (! is_elf_hash_table (info
))
1635 return elf_hash_table (info
)->runpath
;
1638 /* Get the name actually used for a dynamic object for a link. This
1639 is the SONAME entry if there is one. Otherwise, it is the string
1640 passed to bfd_elf_set_dt_needed_name, or it is the filename. */
1643 bfd_elf_get_dt_soname (abfd
)
1646 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1647 && bfd_get_format (abfd
) == bfd_object
)
1648 return elf_dt_name (abfd
);
1652 /* Get the list of DT_NEEDED entries from a BFD. This is a hook for
1653 the ELF linker emulation code. */
1656 bfd_elf_get_bfd_needed_list (abfd
, pneeded
)
1658 struct bfd_link_needed_list
**pneeded
;
1661 bfd_byte
*dynbuf
= NULL
;
1663 unsigned long shlink
;
1664 bfd_byte
*extdyn
, *extdynend
;
1666 void (*swap_dyn_in
) PARAMS ((bfd
*, const PTR
, Elf_Internal_Dyn
*));
1670 if (bfd_get_flavour (abfd
) != bfd_target_elf_flavour
1671 || bfd_get_format (abfd
) != bfd_object
)
1674 s
= bfd_get_section_by_name (abfd
, ".dynamic");
1675 if (s
== NULL
|| s
->_raw_size
== 0)
1678 dynbuf
= (bfd_byte
*) bfd_malloc (s
->_raw_size
);
1682 if (! bfd_get_section_contents (abfd
, s
, (PTR
) dynbuf
, (file_ptr
) 0,
1686 elfsec
= _bfd_elf_section_from_bfd_section (abfd
, s
);
1690 shlink
= elf_elfsections (abfd
)[elfsec
]->sh_link
;
1692 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
1693 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
1696 extdynend
= extdyn
+ s
->_raw_size
;
1697 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
1699 Elf_Internal_Dyn dyn
;
1701 (*swap_dyn_in
) (abfd
, (PTR
) extdyn
, &dyn
);
1703 if (dyn
.d_tag
== DT_NULL
)
1706 if (dyn
.d_tag
== DT_NEEDED
)
1709 struct bfd_link_needed_list
*l
;
1710 unsigned int tagv
= dyn
.d_un
.d_val
;
1713 string
= bfd_elf_string_from_elf_section (abfd
, shlink
, tagv
);
1718 l
= (struct bfd_link_needed_list
*) bfd_alloc (abfd
, amt
);
1739 /* Allocate an ELF string table--force the first byte to be zero. */
1741 struct bfd_strtab_hash
*
1742 _bfd_elf_stringtab_init ()
1744 struct bfd_strtab_hash
*ret
;
1746 ret
= _bfd_stringtab_init ();
1751 loc
= _bfd_stringtab_add (ret
, "", TRUE
, FALSE
);
1752 BFD_ASSERT (loc
== 0 || loc
== (bfd_size_type
) -1);
1753 if (loc
== (bfd_size_type
) -1)
1755 _bfd_stringtab_free (ret
);
1762 /* ELF .o/exec file reading */
1764 /* Create a new bfd section from an ELF section header. */
1767 bfd_section_from_shdr (abfd
, shindex
)
1769 unsigned int shindex
;
1771 Elf_Internal_Shdr
*hdr
= elf_elfsections (abfd
)[shindex
];
1772 Elf_Internal_Ehdr
*ehdr
= elf_elfheader (abfd
);
1773 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1776 name
= elf_string_from_elf_strtab (abfd
, hdr
->sh_name
);
1778 switch (hdr
->sh_type
)
1781 /* Inactive section. Throw it away. */
1784 case SHT_PROGBITS
: /* Normal section with contents. */
1785 case SHT_NOBITS
: /* .bss section. */
1786 case SHT_HASH
: /* .hash section. */
1787 case SHT_NOTE
: /* .note section. */
1788 case SHT_INIT_ARRAY
: /* .init_array section. */
1789 case SHT_FINI_ARRAY
: /* .fini_array section. */
1790 case SHT_PREINIT_ARRAY
: /* .preinit_array section. */
1791 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1793 case SHT_DYNAMIC
: /* Dynamic linking information. */
1794 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
))
1796 if (elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
!= SHT_STRTAB
)
1798 Elf_Internal_Shdr
*dynsymhdr
;
1800 /* The shared libraries distributed with hpux11 have a bogus
1801 sh_link field for the ".dynamic" section. Find the
1802 string table for the ".dynsym" section instead. */
1803 if (elf_dynsymtab (abfd
) != 0)
1805 dynsymhdr
= elf_elfsections (abfd
)[elf_dynsymtab (abfd
)];
1806 hdr
->sh_link
= dynsymhdr
->sh_link
;
1810 unsigned int i
, num_sec
;
1812 num_sec
= elf_numsections (abfd
);
1813 for (i
= 1; i
< num_sec
; i
++)
1815 dynsymhdr
= elf_elfsections (abfd
)[i
];
1816 if (dynsymhdr
->sh_type
== SHT_DYNSYM
)
1818 hdr
->sh_link
= dynsymhdr
->sh_link
;
1826 case SHT_SYMTAB
: /* A symbol table */
1827 if (elf_onesymtab (abfd
) == shindex
)
1830 BFD_ASSERT (hdr
->sh_entsize
== bed
->s
->sizeof_sym
);
1831 BFD_ASSERT (elf_onesymtab (abfd
) == 0);
1832 elf_onesymtab (abfd
) = shindex
;
1833 elf_tdata (abfd
)->symtab_hdr
= *hdr
;
1834 elf_elfsections (abfd
)[shindex
] = hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1835 abfd
->flags
|= HAS_SYMS
;
1837 /* Sometimes a shared object will map in the symbol table. If
1838 SHF_ALLOC is set, and this is a shared object, then we also
1839 treat this section as a BFD section. We can not base the
1840 decision purely on SHF_ALLOC, because that flag is sometimes
1841 set in a relocateable object file, which would confuse the
1843 if ((hdr
->sh_flags
& SHF_ALLOC
) != 0
1844 && (abfd
->flags
& DYNAMIC
) != 0
1845 && ! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
))
1850 case SHT_DYNSYM
: /* A dynamic symbol table */
1851 if (elf_dynsymtab (abfd
) == shindex
)
1854 BFD_ASSERT (hdr
->sh_entsize
== bed
->s
->sizeof_sym
);
1855 BFD_ASSERT (elf_dynsymtab (abfd
) == 0);
1856 elf_dynsymtab (abfd
) = shindex
;
1857 elf_tdata (abfd
)->dynsymtab_hdr
= *hdr
;
1858 elf_elfsections (abfd
)[shindex
] = hdr
= &elf_tdata (abfd
)->dynsymtab_hdr
;
1859 abfd
->flags
|= HAS_SYMS
;
1861 /* Besides being a symbol table, we also treat this as a regular
1862 section, so that objcopy can handle it. */
1863 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1865 case SHT_SYMTAB_SHNDX
: /* Symbol section indices when >64k sections */
1866 if (elf_symtab_shndx (abfd
) == shindex
)
1869 /* Get the associated symbol table. */
1870 if (! bfd_section_from_shdr (abfd
, hdr
->sh_link
)
1871 || hdr
->sh_link
!= elf_onesymtab (abfd
))
1874 elf_symtab_shndx (abfd
) = shindex
;
1875 elf_tdata (abfd
)->symtab_shndx_hdr
= *hdr
;
1876 elf_elfsections (abfd
)[shindex
] = &elf_tdata (abfd
)->symtab_shndx_hdr
;
1879 case SHT_STRTAB
: /* A string table */
1880 if (hdr
->bfd_section
!= NULL
)
1882 if (ehdr
->e_shstrndx
== shindex
)
1884 elf_tdata (abfd
)->shstrtab_hdr
= *hdr
;
1885 elf_elfsections (abfd
)[shindex
] = &elf_tdata (abfd
)->shstrtab_hdr
;
1889 unsigned int i
, num_sec
;
1891 num_sec
= elf_numsections (abfd
);
1892 for (i
= 1; i
< num_sec
; i
++)
1894 Elf_Internal_Shdr
*hdr2
= elf_elfsections (abfd
)[i
];
1895 if (hdr2
->sh_link
== shindex
)
1897 if (! bfd_section_from_shdr (abfd
, i
))
1899 if (elf_onesymtab (abfd
) == i
)
1901 elf_tdata (abfd
)->strtab_hdr
= *hdr
;
1902 elf_elfsections (abfd
)[shindex
] =
1903 &elf_tdata (abfd
)->strtab_hdr
;
1906 if (elf_dynsymtab (abfd
) == i
)
1908 elf_tdata (abfd
)->dynstrtab_hdr
= *hdr
;
1909 elf_elfsections (abfd
)[shindex
] = hdr
=
1910 &elf_tdata (abfd
)->dynstrtab_hdr
;
1911 /* We also treat this as a regular section, so
1912 that objcopy can handle it. */
1915 #if 0 /* Not handling other string tables specially right now. */
1916 hdr2
= elf_elfsections (abfd
)[i
]; /* in case it moved */
1917 /* We have a strtab for some random other section. */
1918 newsect
= (asection
*) hdr2
->bfd_section
;
1921 hdr
->bfd_section
= newsect
;
1922 hdr2
= &elf_section_data (newsect
)->str_hdr
;
1924 elf_elfsections (abfd
)[shindex
] = hdr2
;
1930 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1934 /* *These* do a lot of work -- but build no sections! */
1936 asection
*target_sect
;
1937 Elf_Internal_Shdr
*hdr2
;
1938 unsigned int num_sec
= elf_numsections (abfd
);
1940 /* Check for a bogus link to avoid crashing. */
1941 if ((hdr
->sh_link
>= SHN_LORESERVE
&& hdr
->sh_link
<= SHN_HIRESERVE
)
1942 || hdr
->sh_link
>= num_sec
)
1944 ((*_bfd_error_handler
)
1945 (_("%s: invalid link %lu for reloc section %s (index %u)"),
1946 bfd_archive_filename (abfd
), hdr
->sh_link
, name
, shindex
));
1947 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1950 /* For some incomprehensible reason Oracle distributes
1951 libraries for Solaris in which some of the objects have
1952 bogus sh_link fields. It would be nice if we could just
1953 reject them, but, unfortunately, some people need to use
1954 them. We scan through the section headers; if we find only
1955 one suitable symbol table, we clobber the sh_link to point
1956 to it. I hope this doesn't break anything. */
1957 if (elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
!= SHT_SYMTAB
1958 && elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
!= SHT_DYNSYM
)
1964 for (scan
= 1; scan
< num_sec
; scan
++)
1966 if (elf_elfsections (abfd
)[scan
]->sh_type
== SHT_SYMTAB
1967 || elf_elfsections (abfd
)[scan
]->sh_type
== SHT_DYNSYM
)
1978 hdr
->sh_link
= found
;
1981 /* Get the symbol table. */
1982 if (elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
== SHT_SYMTAB
1983 && ! bfd_section_from_shdr (abfd
, hdr
->sh_link
))
1986 /* If this reloc section does not use the main symbol table we
1987 don't treat it as a reloc section. BFD can't adequately
1988 represent such a section, so at least for now, we don't
1989 try. We just present it as a normal section. We also
1990 can't use it as a reloc section if it points to the null
1992 if (hdr
->sh_link
!= elf_onesymtab (abfd
) || hdr
->sh_info
== SHN_UNDEF
)
1993 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1995 if (! bfd_section_from_shdr (abfd
, hdr
->sh_info
))
1997 target_sect
= bfd_section_from_elf_index (abfd
, hdr
->sh_info
);
1998 if (target_sect
== NULL
)
2001 if ((target_sect
->flags
& SEC_RELOC
) == 0
2002 || target_sect
->reloc_count
== 0)
2003 hdr2
= &elf_section_data (target_sect
)->rel_hdr
;
2007 BFD_ASSERT (elf_section_data (target_sect
)->rel_hdr2
== NULL
);
2008 amt
= sizeof (*hdr2
);
2009 hdr2
= (Elf_Internal_Shdr
*) bfd_alloc (abfd
, amt
);
2010 elf_section_data (target_sect
)->rel_hdr2
= hdr2
;
2013 elf_elfsections (abfd
)[shindex
] = hdr2
;
2014 target_sect
->reloc_count
+= NUM_SHDR_ENTRIES (hdr
);
2015 target_sect
->flags
|= SEC_RELOC
;
2016 target_sect
->relocation
= NULL
;
2017 target_sect
->rel_filepos
= hdr
->sh_offset
;
2018 /* In the section to which the relocations apply, mark whether
2019 its relocations are of the REL or RELA variety. */
2020 if (hdr
->sh_size
!= 0)
2021 target_sect
->use_rela_p
= hdr
->sh_type
== SHT_RELA
;
2022 abfd
->flags
|= HAS_RELOC
;
2027 case SHT_GNU_verdef
:
2028 elf_dynverdef (abfd
) = shindex
;
2029 elf_tdata (abfd
)->dynverdef_hdr
= *hdr
;
2030 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
2033 case SHT_GNU_versym
:
2034 elf_dynversym (abfd
) = shindex
;
2035 elf_tdata (abfd
)->dynversym_hdr
= *hdr
;
2036 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
2039 case SHT_GNU_verneed
:
2040 elf_dynverref (abfd
) = shindex
;
2041 elf_tdata (abfd
)->dynverref_hdr
= *hdr
;
2042 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
2049 /* We need a BFD section for objcopy and relocatable linking,
2050 and it's handy to have the signature available as the section
2052 name
= group_signature (abfd
, hdr
);
2055 if (!_bfd_elf_make_section_from_shdr (abfd
, hdr
, name
))
2057 if (hdr
->contents
!= NULL
)
2059 Elf_Internal_Group
*idx
= (Elf_Internal_Group
*) hdr
->contents
;
2060 unsigned int n_elt
= hdr
->sh_size
/ 4;
2063 if (idx
->flags
& GRP_COMDAT
)
2064 hdr
->bfd_section
->flags
2065 |= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_DISCARD
;
2067 while (--n_elt
!= 0)
2068 if ((s
= (++idx
)->shdr
->bfd_section
) != NULL
2069 && elf_next_in_group (s
) != NULL
)
2071 elf_next_in_group (hdr
->bfd_section
) = s
;
2078 /* Check for any processor-specific section types. */
2080 if (bed
->elf_backend_section_from_shdr
)
2081 (*bed
->elf_backend_section_from_shdr
) (abfd
, hdr
, name
);
2089 /* Return the section for the local symbol specified by ABFD, R_SYMNDX.
2090 Return SEC for sections that have no elf section, and NULL on error. */
2093 bfd_section_from_r_symndx (abfd
, cache
, sec
, r_symndx
)
2095 struct sym_sec_cache
*cache
;
2097 unsigned long r_symndx
;
2099 Elf_Internal_Shdr
*symtab_hdr
;
2100 unsigned char esym
[sizeof (Elf64_External_Sym
)];
2101 Elf_External_Sym_Shndx eshndx
;
2102 Elf_Internal_Sym isym
;
2103 unsigned int ent
= r_symndx
% LOCAL_SYM_CACHE_SIZE
;
2105 if (cache
->abfd
== abfd
&& cache
->indx
[ent
] == r_symndx
)
2106 return cache
->sec
[ent
];
2108 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2109 if (bfd_elf_get_elf_syms (abfd
, symtab_hdr
, 1, r_symndx
,
2110 &isym
, esym
, &eshndx
) == NULL
)
2113 if (cache
->abfd
!= abfd
)
2115 memset (cache
->indx
, -1, sizeof (cache
->indx
));
2118 cache
->indx
[ent
] = r_symndx
;
2119 cache
->sec
[ent
] = sec
;
2120 if (isym
.st_shndx
< SHN_LORESERVE
|| isym
.st_shndx
> SHN_HIRESERVE
)
2123 s
= bfd_section_from_elf_index (abfd
, isym
.st_shndx
);
2125 cache
->sec
[ent
] = s
;
2127 return cache
->sec
[ent
];
2130 /* Given an ELF section number, retrieve the corresponding BFD
2134 bfd_section_from_elf_index (abfd
, index
)
2138 if (index
>= elf_numsections (abfd
))
2140 return elf_elfsections (abfd
)[index
]->bfd_section
;
2144 _bfd_elf_new_section_hook (abfd
, sec
)
2148 struct bfd_elf_section_data
*sdata
;
2150 sdata
= (struct bfd_elf_section_data
*) sec
->used_by_bfd
;
2153 bfd_size_type amt
= sizeof (*sdata
);
2154 sdata
= (struct bfd_elf_section_data
*) bfd_zalloc (abfd
, amt
);
2157 sec
->used_by_bfd
= (PTR
) sdata
;
2160 /* Indicate whether or not this section should use RELA relocations. */
2161 sec
->use_rela_p
= get_elf_backend_data (abfd
)->default_use_rela_p
;
2166 /* Create a new bfd section from an ELF program header.
2168 Since program segments have no names, we generate a synthetic name
2169 of the form segment<NUM>, where NUM is generally the index in the
2170 program header table. For segments that are split (see below) we
2171 generate the names segment<NUM>a and segment<NUM>b.
2173 Note that some program segments may have a file size that is different than
2174 (less than) the memory size. All this means is that at execution the
2175 system must allocate the amount of memory specified by the memory size,
2176 but only initialize it with the first "file size" bytes read from the
2177 file. This would occur for example, with program segments consisting
2178 of combined data+bss.
2180 To handle the above situation, this routine generates TWO bfd sections
2181 for the single program segment. The first has the length specified by
2182 the file size of the segment, and the second has the length specified
2183 by the difference between the two sizes. In effect, the segment is split
2184 into it's initialized and uninitialized parts.
2189 _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, typename
)
2191 Elf_Internal_Phdr
*hdr
;
2193 const char *typename
;
2201 split
= ((hdr
->p_memsz
> 0)
2202 && (hdr
->p_filesz
> 0)
2203 && (hdr
->p_memsz
> hdr
->p_filesz
));
2204 sprintf (namebuf
, "%s%d%s", typename
, index
, split
? "a" : "");
2205 len
= strlen (namebuf
) + 1;
2206 name
= bfd_alloc (abfd
, (bfd_size_type
) len
);
2209 memcpy (name
, namebuf
, len
);
2210 newsect
= bfd_make_section (abfd
, name
);
2211 if (newsect
== NULL
)
2213 newsect
->vma
= hdr
->p_vaddr
;
2214 newsect
->lma
= hdr
->p_paddr
;
2215 newsect
->_raw_size
= hdr
->p_filesz
;
2216 newsect
->filepos
= hdr
->p_offset
;
2217 newsect
->flags
|= SEC_HAS_CONTENTS
;
2218 if (hdr
->p_type
== PT_LOAD
)
2220 newsect
->flags
|= SEC_ALLOC
;
2221 newsect
->flags
|= SEC_LOAD
;
2222 if (hdr
->p_flags
& PF_X
)
2224 /* FIXME: all we known is that it has execute PERMISSION,
2226 newsect
->flags
|= SEC_CODE
;
2229 if (!(hdr
->p_flags
& PF_W
))
2231 newsect
->flags
|= SEC_READONLY
;
2236 sprintf (namebuf
, "%s%db", typename
, index
);
2237 len
= strlen (namebuf
) + 1;
2238 name
= bfd_alloc (abfd
, (bfd_size_type
) len
);
2241 memcpy (name
, namebuf
, len
);
2242 newsect
= bfd_make_section (abfd
, name
);
2243 if (newsect
== NULL
)
2245 newsect
->vma
= hdr
->p_vaddr
+ hdr
->p_filesz
;
2246 newsect
->lma
= hdr
->p_paddr
+ hdr
->p_filesz
;
2247 newsect
->_raw_size
= hdr
->p_memsz
- hdr
->p_filesz
;
2248 if (hdr
->p_type
== PT_LOAD
)
2250 newsect
->flags
|= SEC_ALLOC
;
2251 if (hdr
->p_flags
& PF_X
)
2252 newsect
->flags
|= SEC_CODE
;
2254 if (!(hdr
->p_flags
& PF_W
))
2255 newsect
->flags
|= SEC_READONLY
;
2262 bfd_section_from_phdr (abfd
, hdr
, index
)
2264 Elf_Internal_Phdr
*hdr
;
2267 struct elf_backend_data
*bed
;
2269 switch (hdr
->p_type
)
2272 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "null");
2275 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "load");
2278 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "dynamic");
2281 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "interp");
2284 if (! _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "note"))
2286 if (! elfcore_read_notes (abfd
, (file_ptr
) hdr
->p_offset
, hdr
->p_filesz
))
2291 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "shlib");
2294 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "phdr");
2296 case PT_GNU_EH_FRAME
:
2297 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
,
2301 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "stack");
2304 /* Check for any processor-specific program segment types.
2305 If no handler for them, default to making "segment" sections. */
2306 bed
= get_elf_backend_data (abfd
);
2307 if (bed
->elf_backend_section_from_phdr
)
2308 return (*bed
->elf_backend_section_from_phdr
) (abfd
, hdr
, index
);
2310 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "segment");
2314 /* Initialize REL_HDR, the section-header for new section, containing
2315 relocations against ASECT. If USE_RELA_P is TRUE, we use RELA
2316 relocations; otherwise, we use REL relocations. */
2319 _bfd_elf_init_reloc_shdr (abfd
, rel_hdr
, asect
, use_rela_p
)
2321 Elf_Internal_Shdr
*rel_hdr
;
2323 bfd_boolean use_rela_p
;
2326 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2327 bfd_size_type amt
= sizeof ".rela" + strlen (asect
->name
);
2329 name
= bfd_alloc (abfd
, amt
);
2332 sprintf (name
, "%s%s", use_rela_p
? ".rela" : ".rel", asect
->name
);
2334 (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd
), name
,
2336 if (rel_hdr
->sh_name
== (unsigned int) -1)
2338 rel_hdr
->sh_type
= use_rela_p
? SHT_RELA
: SHT_REL
;
2339 rel_hdr
->sh_entsize
= (use_rela_p
2340 ? bed
->s
->sizeof_rela
2341 : bed
->s
->sizeof_rel
);
2342 rel_hdr
->sh_addralign
= 1 << bed
->s
->log_file_align
;
2343 rel_hdr
->sh_flags
= 0;
2344 rel_hdr
->sh_addr
= 0;
2345 rel_hdr
->sh_size
= 0;
2346 rel_hdr
->sh_offset
= 0;
2351 /* Set up an ELF internal section header for a section. */
2354 elf_fake_sections (abfd
, asect
, failedptrarg
)
2359 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2360 bfd_boolean
*failedptr
= (bfd_boolean
*) failedptrarg
;
2361 Elf_Internal_Shdr
*this_hdr
;
2365 /* We already failed; just get out of the bfd_map_over_sections
2370 this_hdr
= &elf_section_data (asect
)->this_hdr
;
2372 this_hdr
->sh_name
= (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd
),
2373 asect
->name
, FALSE
);
2374 if (this_hdr
->sh_name
== (unsigned int) -1)
2380 this_hdr
->sh_flags
= 0;
2382 if ((asect
->flags
& SEC_ALLOC
) != 0
2383 || asect
->user_set_vma
)
2384 this_hdr
->sh_addr
= asect
->vma
;
2386 this_hdr
->sh_addr
= 0;
2388 this_hdr
->sh_offset
= 0;
2389 this_hdr
->sh_size
= asect
->_raw_size
;
2390 this_hdr
->sh_link
= 0;
2391 this_hdr
->sh_addralign
= 1 << asect
->alignment_power
;
2392 /* The sh_entsize and sh_info fields may have been set already by
2393 copy_private_section_data. */
2395 this_hdr
->bfd_section
= asect
;
2396 this_hdr
->contents
= NULL
;
2398 /* FIXME: This should not be based on section names. */
2399 if (strcmp (asect
->name
, ".dynstr") == 0)
2400 this_hdr
->sh_type
= SHT_STRTAB
;
2401 else if (strcmp (asect
->name
, ".hash") == 0)
2403 this_hdr
->sh_type
= SHT_HASH
;
2404 this_hdr
->sh_entsize
= bed
->s
->sizeof_hash_entry
;
2406 else if (strcmp (asect
->name
, ".dynsym") == 0)
2408 this_hdr
->sh_type
= SHT_DYNSYM
;
2409 this_hdr
->sh_entsize
= bed
->s
->sizeof_sym
;
2411 else if (strcmp (asect
->name
, ".dynamic") == 0)
2413 this_hdr
->sh_type
= SHT_DYNAMIC
;
2414 this_hdr
->sh_entsize
= bed
->s
->sizeof_dyn
;
2416 else if (strncmp (asect
->name
, ".rela", 5) == 0
2417 && get_elf_backend_data (abfd
)->may_use_rela_p
)
2419 this_hdr
->sh_type
= SHT_RELA
;
2420 this_hdr
->sh_entsize
= bed
->s
->sizeof_rela
;
2422 else if (strncmp (asect
->name
, ".rel", 4) == 0
2423 && get_elf_backend_data (abfd
)->may_use_rel_p
)
2425 this_hdr
->sh_type
= SHT_REL
;
2426 this_hdr
->sh_entsize
= bed
->s
->sizeof_rel
;
2428 else if (strcmp (asect
->name
, ".init_array") == 0)
2429 this_hdr
->sh_type
= SHT_INIT_ARRAY
;
2430 else if (strcmp (asect
->name
, ".fini_array") == 0)
2431 this_hdr
->sh_type
= SHT_FINI_ARRAY
;
2432 else if (strcmp (asect
->name
, ".preinit_array") == 0)
2433 this_hdr
->sh_type
= SHT_PREINIT_ARRAY
;
2434 else if (strncmp (asect
->name
, ".note", 5) == 0)
2435 this_hdr
->sh_type
= SHT_NOTE
;
2436 else if (strncmp (asect
->name
, ".stab", 5) == 0
2437 && strcmp (asect
->name
+ strlen (asect
->name
) - 3, "str") == 0)
2438 this_hdr
->sh_type
= SHT_STRTAB
;
2439 else if (strcmp (asect
->name
, ".gnu.version") == 0)
2441 this_hdr
->sh_type
= SHT_GNU_versym
;
2442 this_hdr
->sh_entsize
= sizeof (Elf_External_Versym
);
2444 else if (strcmp (asect
->name
, ".gnu.version_d") == 0)
2446 this_hdr
->sh_type
= SHT_GNU_verdef
;
2447 this_hdr
->sh_entsize
= 0;
2448 /* objcopy or strip will copy over sh_info, but may not set
2449 cverdefs. The linker will set cverdefs, but sh_info will be
2451 if (this_hdr
->sh_info
== 0)
2452 this_hdr
->sh_info
= elf_tdata (abfd
)->cverdefs
;
2454 BFD_ASSERT (elf_tdata (abfd
)->cverdefs
== 0
2455 || this_hdr
->sh_info
== elf_tdata (abfd
)->cverdefs
);
2457 else if (strcmp (asect
->name
, ".gnu.version_r") == 0)
2459 this_hdr
->sh_type
= SHT_GNU_verneed
;
2460 this_hdr
->sh_entsize
= 0;
2461 /* objcopy or strip will copy over sh_info, but may not set
2462 cverrefs. The linker will set cverrefs, but sh_info will be
2464 if (this_hdr
->sh_info
== 0)
2465 this_hdr
->sh_info
= elf_tdata (abfd
)->cverrefs
;
2467 BFD_ASSERT (elf_tdata (abfd
)->cverrefs
== 0
2468 || this_hdr
->sh_info
== elf_tdata (abfd
)->cverrefs
);
2470 else if ((asect
->flags
& SEC_GROUP
) != 0)
2472 this_hdr
->sh_type
= SHT_GROUP
;
2473 this_hdr
->sh_entsize
= 4;
2475 else if ((asect
->flags
& SEC_ALLOC
) != 0
2476 && (((asect
->flags
& (SEC_LOAD
| SEC_HAS_CONTENTS
)) == 0)
2477 || (asect
->flags
& SEC_NEVER_LOAD
) != 0))
2478 this_hdr
->sh_type
= SHT_NOBITS
;
2480 this_hdr
->sh_type
= SHT_PROGBITS
;
2482 if ((asect
->flags
& SEC_ALLOC
) != 0)
2483 this_hdr
->sh_flags
|= SHF_ALLOC
;
2484 if ((asect
->flags
& SEC_READONLY
) == 0)
2485 this_hdr
->sh_flags
|= SHF_WRITE
;
2486 if ((asect
->flags
& SEC_CODE
) != 0)
2487 this_hdr
->sh_flags
|= SHF_EXECINSTR
;
2488 if ((asect
->flags
& SEC_MERGE
) != 0)
2490 this_hdr
->sh_flags
|= SHF_MERGE
;
2491 this_hdr
->sh_entsize
= asect
->entsize
;
2492 if ((asect
->flags
& SEC_STRINGS
) != 0)
2493 this_hdr
->sh_flags
|= SHF_STRINGS
;
2495 if ((asect
->flags
& SEC_GROUP
) == 0 && elf_group_name (asect
) != NULL
)
2496 this_hdr
->sh_flags
|= SHF_GROUP
;
2497 if ((asect
->flags
& SEC_THREAD_LOCAL
) != 0)
2499 this_hdr
->sh_flags
|= SHF_TLS
;
2500 if (asect
->_raw_size
== 0 && (asect
->flags
& SEC_HAS_CONTENTS
) == 0)
2502 struct bfd_link_order
*o
;
2504 this_hdr
->sh_size
= 0;
2505 for (o
= asect
->link_order_head
; o
!= NULL
; o
= o
->next
)
2506 if (this_hdr
->sh_size
< o
->offset
+ o
->size
)
2507 this_hdr
->sh_size
= o
->offset
+ o
->size
;
2508 if (this_hdr
->sh_size
)
2509 this_hdr
->sh_type
= SHT_NOBITS
;
2513 /* Check for processor-specific section types. */
2514 if (bed
->elf_backend_fake_sections
2515 && !(*bed
->elf_backend_fake_sections
) (abfd
, this_hdr
, asect
))
2518 /* If the section has relocs, set up a section header for the
2519 SHT_REL[A] section. If two relocation sections are required for
2520 this section, it is up to the processor-specific back-end to
2521 create the other. */
2522 if ((asect
->flags
& SEC_RELOC
) != 0
2523 && !_bfd_elf_init_reloc_shdr (abfd
,
2524 &elf_section_data (asect
)->rel_hdr
,
2530 /* Fill in the contents of a SHT_GROUP section. */
2533 bfd_elf_set_group_contents (abfd
, sec
, failedptrarg
)
2538 bfd_boolean
*failedptr
= (bfd_boolean
*) failedptrarg
;
2539 unsigned long symindx
;
2540 asection
*elt
, *first
;
2542 struct bfd_link_order
*l
;
2545 if (elf_section_data (sec
)->this_hdr
.sh_type
!= SHT_GROUP
2550 if (elf_group_id (sec
) != NULL
)
2551 symindx
= elf_group_id (sec
)->udata
.i
;
2555 /* If called from the assembler, swap_out_syms will have set up
2556 elf_section_syms; If called for "ld -r", use target_index. */
2557 if (elf_section_syms (abfd
) != NULL
)
2558 symindx
= elf_section_syms (abfd
)[sec
->index
]->udata
.i
;
2560 symindx
= sec
->target_index
;
2562 elf_section_data (sec
)->this_hdr
.sh_info
= symindx
;
2564 /* The contents won't be allocated for "ld -r" or objcopy. */
2566 if (sec
->contents
== NULL
)
2569 sec
->contents
= bfd_alloc (abfd
, sec
->_raw_size
);
2571 /* Arrange for the section to be written out. */
2572 elf_section_data (sec
)->this_hdr
.contents
= sec
->contents
;
2573 if (sec
->contents
== NULL
)
2580 loc
= sec
->contents
+ sec
->_raw_size
;
2582 /* Get the pointer to the first section in the group that gas
2583 squirreled away here. objcopy arranges for this to be set to the
2584 start of the input section group. */
2585 first
= elt
= elf_next_in_group (sec
);
2587 /* First element is a flag word. Rest of section is elf section
2588 indices for all the sections of the group. Write them backwards
2589 just to keep the group in the same order as given in .section
2590 directives, not that it matters. */
2599 s
= s
->output_section
;
2602 idx
= elf_section_data (s
)->this_idx
;
2603 H_PUT_32 (abfd
, idx
, loc
);
2604 elt
= elf_next_in_group (elt
);
2609 /* If this is a relocatable link, then the above did nothing because
2610 SEC is the output section. Look through the input sections
2612 for (l
= sec
->link_order_head
; l
!= NULL
; l
= l
->next
)
2613 if (l
->type
== bfd_indirect_link_order
2614 && (elt
= elf_next_in_group (l
->u
.indirect
.section
)) != NULL
)
2619 elf_section_data (elt
->output_section
)->this_idx
, loc
);
2620 elt
= elf_next_in_group (elt
);
2621 /* During a relocatable link, the lists are circular. */
2623 while (elt
!= elf_next_in_group (l
->u
.indirect
.section
));
2625 /* With ld -r, merging SHT_GROUP sections results in wasted space
2626 due to allowing for the flag word on each input. We may well
2627 duplicate entries too. */
2628 while ((loc
-= 4) > sec
->contents
)
2629 H_PUT_32 (abfd
, 0, loc
);
2631 if (loc
!= sec
->contents
)
2634 H_PUT_32 (abfd
, sec
->flags
& SEC_LINK_ONCE
? GRP_COMDAT
: 0, loc
);
2637 /* Assign all ELF section numbers. The dummy first section is handled here
2638 too. The link/info pointers for the standard section types are filled
2639 in here too, while we're at it. */
2642 assign_section_numbers (abfd
)
2645 struct elf_obj_tdata
*t
= elf_tdata (abfd
);
2647 unsigned int section_number
, secn
;
2648 Elf_Internal_Shdr
**i_shdrp
;
2653 _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd
));
2655 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
2657 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
2659 if (section_number
== SHN_LORESERVE
)
2660 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2661 d
->this_idx
= section_number
++;
2662 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), d
->this_hdr
.sh_name
);
2663 if ((sec
->flags
& SEC_RELOC
) == 0)
2667 if (section_number
== SHN_LORESERVE
)
2668 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2669 d
->rel_idx
= section_number
++;
2670 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), d
->rel_hdr
.sh_name
);
2675 if (section_number
== SHN_LORESERVE
)
2676 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2677 d
->rel_idx2
= section_number
++;
2678 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), d
->rel_hdr2
->sh_name
);
2684 if (section_number
== SHN_LORESERVE
)
2685 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2686 t
->shstrtab_section
= section_number
++;
2687 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), t
->shstrtab_hdr
.sh_name
);
2688 elf_elfheader (abfd
)->e_shstrndx
= t
->shstrtab_section
;
2690 if (bfd_get_symcount (abfd
) > 0)
2692 if (section_number
== SHN_LORESERVE
)
2693 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2694 t
->symtab_section
= section_number
++;
2695 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), t
->symtab_hdr
.sh_name
);
2696 if (section_number
> SHN_LORESERVE
- 2)
2698 if (section_number
== SHN_LORESERVE
)
2699 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2700 t
->symtab_shndx_section
= section_number
++;
2701 t
->symtab_shndx_hdr
.sh_name
2702 = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd
),
2703 ".symtab_shndx", FALSE
);
2704 if (t
->symtab_shndx_hdr
.sh_name
== (unsigned int) -1)
2707 if (section_number
== SHN_LORESERVE
)
2708 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2709 t
->strtab_section
= section_number
++;
2710 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), t
->strtab_hdr
.sh_name
);
2713 _bfd_elf_strtab_finalize (elf_shstrtab (abfd
));
2714 t
->shstrtab_hdr
.sh_size
= _bfd_elf_strtab_size (elf_shstrtab (abfd
));
2716 elf_numsections (abfd
) = section_number
;
2717 elf_elfheader (abfd
)->e_shnum
= section_number
;
2718 if (section_number
> SHN_LORESERVE
)
2719 elf_elfheader (abfd
)->e_shnum
-= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2721 /* Set up the list of section header pointers, in agreement with the
2723 amt
= section_number
* sizeof (Elf_Internal_Shdr
*);
2724 i_shdrp
= (Elf_Internal_Shdr
**) bfd_zalloc (abfd
, amt
);
2725 if (i_shdrp
== NULL
)
2728 amt
= sizeof (Elf_Internal_Shdr
);
2729 i_shdrp
[0] = (Elf_Internal_Shdr
*) bfd_zalloc (abfd
, amt
);
2730 if (i_shdrp
[0] == NULL
)
2732 bfd_release (abfd
, i_shdrp
);
2736 elf_elfsections (abfd
) = i_shdrp
;
2738 i_shdrp
[t
->shstrtab_section
] = &t
->shstrtab_hdr
;
2739 if (bfd_get_symcount (abfd
) > 0)
2741 i_shdrp
[t
->symtab_section
] = &t
->symtab_hdr
;
2742 if (elf_numsections (abfd
) > SHN_LORESERVE
)
2744 i_shdrp
[t
->symtab_shndx_section
] = &t
->symtab_shndx_hdr
;
2745 t
->symtab_shndx_hdr
.sh_link
= t
->symtab_section
;
2747 i_shdrp
[t
->strtab_section
] = &t
->strtab_hdr
;
2748 t
->symtab_hdr
.sh_link
= t
->strtab_section
;
2750 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
2752 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
2756 i_shdrp
[d
->this_idx
] = &d
->this_hdr
;
2757 if (d
->rel_idx
!= 0)
2758 i_shdrp
[d
->rel_idx
] = &d
->rel_hdr
;
2759 if (d
->rel_idx2
!= 0)
2760 i_shdrp
[d
->rel_idx2
] = d
->rel_hdr2
;
2762 /* Fill in the sh_link and sh_info fields while we're at it. */
2764 /* sh_link of a reloc section is the section index of the symbol
2765 table. sh_info is the section index of the section to which
2766 the relocation entries apply. */
2767 if (d
->rel_idx
!= 0)
2769 d
->rel_hdr
.sh_link
= t
->symtab_section
;
2770 d
->rel_hdr
.sh_info
= d
->this_idx
;
2772 if (d
->rel_idx2
!= 0)
2774 d
->rel_hdr2
->sh_link
= t
->symtab_section
;
2775 d
->rel_hdr2
->sh_info
= d
->this_idx
;
2778 switch (d
->this_hdr
.sh_type
)
2782 /* A reloc section which we are treating as a normal BFD
2783 section. sh_link is the section index of the symbol
2784 table. sh_info is the section index of the section to
2785 which the relocation entries apply. We assume that an
2786 allocated reloc section uses the dynamic symbol table.
2787 FIXME: How can we be sure? */
2788 s
= bfd_get_section_by_name (abfd
, ".dynsym");
2790 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
2792 /* We look up the section the relocs apply to by name. */
2794 if (d
->this_hdr
.sh_type
== SHT_REL
)
2798 s
= bfd_get_section_by_name (abfd
, name
);
2800 d
->this_hdr
.sh_info
= elf_section_data (s
)->this_idx
;
2804 /* We assume that a section named .stab*str is a stabs
2805 string section. We look for a section with the same name
2806 but without the trailing ``str'', and set its sh_link
2807 field to point to this section. */
2808 if (strncmp (sec
->name
, ".stab", sizeof ".stab" - 1) == 0
2809 && strcmp (sec
->name
+ strlen (sec
->name
) - 3, "str") == 0)
2814 len
= strlen (sec
->name
);
2815 alc
= (char *) bfd_malloc ((bfd_size_type
) (len
- 2));
2818 memcpy (alc
, sec
->name
, len
- 3);
2819 alc
[len
- 3] = '\0';
2820 s
= bfd_get_section_by_name (abfd
, alc
);
2824 elf_section_data (s
)->this_hdr
.sh_link
= d
->this_idx
;
2826 /* This is a .stab section. */
2827 if (elf_section_data (s
)->this_hdr
.sh_entsize
== 0)
2828 elf_section_data (s
)->this_hdr
.sh_entsize
2829 = 4 + 2 * bfd_get_arch_size (abfd
) / 8;
2836 case SHT_GNU_verneed
:
2837 case SHT_GNU_verdef
:
2838 /* sh_link is the section header index of the string table
2839 used for the dynamic entries, or the symbol table, or the
2841 s
= bfd_get_section_by_name (abfd
, ".dynstr");
2843 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
2847 case SHT_GNU_versym
:
2848 /* sh_link is the section header index of the symbol table
2849 this hash table or version table is for. */
2850 s
= bfd_get_section_by_name (abfd
, ".dynsym");
2852 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
2856 d
->this_hdr
.sh_link
= t
->symtab_section
;
2860 for (secn
= 1; secn
< section_number
; ++secn
)
2861 if (i_shdrp
[secn
] == NULL
)
2862 i_shdrp
[secn
] = i_shdrp
[0];
2864 i_shdrp
[secn
]->sh_name
= _bfd_elf_strtab_offset (elf_shstrtab (abfd
),
2865 i_shdrp
[secn
]->sh_name
);
2869 /* Map symbol from it's internal number to the external number, moving
2870 all local symbols to be at the head of the list. */
2873 sym_is_global (abfd
, sym
)
2877 /* If the backend has a special mapping, use it. */
2878 if (get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
2879 return ((*get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
2882 return ((sym
->flags
& (BSF_GLOBAL
| BSF_WEAK
)) != 0
2883 || bfd_is_und_section (bfd_get_section (sym
))
2884 || bfd_is_com_section (bfd_get_section (sym
)));
2888 elf_map_symbols (abfd
)
2891 unsigned int symcount
= bfd_get_symcount (abfd
);
2892 asymbol
**syms
= bfd_get_outsymbols (abfd
);
2893 asymbol
**sect_syms
;
2894 unsigned int num_locals
= 0;
2895 unsigned int num_globals
= 0;
2896 unsigned int num_locals2
= 0;
2897 unsigned int num_globals2
= 0;
2905 fprintf (stderr
, "elf_map_symbols\n");
2909 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2911 if (max_index
< asect
->index
)
2912 max_index
= asect
->index
;
2916 amt
= max_index
* sizeof (asymbol
*);
2917 sect_syms
= (asymbol
**) bfd_zalloc (abfd
, amt
);
2918 if (sect_syms
== NULL
)
2920 elf_section_syms (abfd
) = sect_syms
;
2921 elf_num_section_syms (abfd
) = max_index
;
2923 /* Init sect_syms entries for any section symbols we have already
2924 decided to output. */
2925 for (idx
= 0; idx
< symcount
; idx
++)
2927 asymbol
*sym
= syms
[idx
];
2929 if ((sym
->flags
& BSF_SECTION_SYM
) != 0
2936 if (sec
->owner
!= NULL
)
2938 if (sec
->owner
!= abfd
)
2940 if (sec
->output_offset
!= 0)
2943 sec
= sec
->output_section
;
2945 /* Empty sections in the input files may have had a
2946 section symbol created for them. (See the comment
2947 near the end of _bfd_generic_link_output_symbols in
2948 linker.c). If the linker script discards such
2949 sections then we will reach this point. Since we know
2950 that we cannot avoid this case, we detect it and skip
2951 the abort and the assignment to the sect_syms array.
2952 To reproduce this particular case try running the
2953 linker testsuite test ld-scripts/weak.exp for an ELF
2954 port that uses the generic linker. */
2955 if (sec
->owner
== NULL
)
2958 BFD_ASSERT (sec
->owner
== abfd
);
2960 sect_syms
[sec
->index
] = syms
[idx
];
2965 /* Classify all of the symbols. */
2966 for (idx
= 0; idx
< symcount
; idx
++)
2968 if (!sym_is_global (abfd
, syms
[idx
]))
2974 /* We will be adding a section symbol for each BFD section. Most normal
2975 sections will already have a section symbol in outsymbols, but
2976 eg. SHT_GROUP sections will not, and we need the section symbol mapped
2977 at least in that case. */
2978 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2980 if (sect_syms
[asect
->index
] == NULL
)
2982 if (!sym_is_global (abfd
, asect
->symbol
))
2989 /* Now sort the symbols so the local symbols are first. */
2990 amt
= (num_locals
+ num_globals
) * sizeof (asymbol
*);
2991 new_syms
= (asymbol
**) bfd_alloc (abfd
, amt
);
2993 if (new_syms
== NULL
)
2996 for (idx
= 0; idx
< symcount
; idx
++)
2998 asymbol
*sym
= syms
[idx
];
3001 if (!sym_is_global (abfd
, sym
))
3004 i
= num_locals
+ num_globals2
++;
3006 sym
->udata
.i
= i
+ 1;
3008 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
3010 if (sect_syms
[asect
->index
] == NULL
)
3012 asymbol
*sym
= asect
->symbol
;
3015 sect_syms
[asect
->index
] = sym
;
3016 if (!sym_is_global (abfd
, sym
))
3019 i
= num_locals
+ num_globals2
++;
3021 sym
->udata
.i
= i
+ 1;
3025 bfd_set_symtab (abfd
, new_syms
, num_locals
+ num_globals
);
3027 elf_num_locals (abfd
) = num_locals
;
3028 elf_num_globals (abfd
) = num_globals
;
3032 /* Align to the maximum file alignment that could be required for any
3033 ELF data structure. */
3035 static INLINE file_ptr align_file_position
3036 PARAMS ((file_ptr
, int));
3037 static INLINE file_ptr
3038 align_file_position (off
, align
)
3042 return (off
+ align
- 1) & ~(align
- 1);
3045 /* Assign a file position to a section, optionally aligning to the
3046 required section alignment. */
3049 _bfd_elf_assign_file_position_for_section (i_shdrp
, offset
, align
)
3050 Elf_Internal_Shdr
*i_shdrp
;
3058 al
= i_shdrp
->sh_addralign
;
3060 offset
= BFD_ALIGN (offset
, al
);
3062 i_shdrp
->sh_offset
= offset
;
3063 if (i_shdrp
->bfd_section
!= NULL
)
3064 i_shdrp
->bfd_section
->filepos
= offset
;
3065 if (i_shdrp
->sh_type
!= SHT_NOBITS
)
3066 offset
+= i_shdrp
->sh_size
;
3070 /* Compute the file positions we are going to put the sections at, and
3071 otherwise prepare to begin writing out the ELF file. If LINK_INFO
3072 is not NULL, this is being called by the ELF backend linker. */
3075 _bfd_elf_compute_section_file_positions (abfd
, link_info
)
3077 struct bfd_link_info
*link_info
;
3079 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3081 struct bfd_strtab_hash
*strtab
;
3082 Elf_Internal_Shdr
*shstrtab_hdr
;
3084 if (abfd
->output_has_begun
)
3087 /* Do any elf backend specific processing first. */
3088 if (bed
->elf_backend_begin_write_processing
)
3089 (*bed
->elf_backend_begin_write_processing
) (abfd
, link_info
);
3091 if (! prep_headers (abfd
))
3094 /* Post process the headers if necessary. */
3095 if (bed
->elf_backend_post_process_headers
)
3096 (*bed
->elf_backend_post_process_headers
) (abfd
, link_info
);
3099 bfd_map_over_sections (abfd
, elf_fake_sections
, &failed
);
3103 if (!assign_section_numbers (abfd
))
3106 /* The backend linker builds symbol table information itself. */
3107 if (link_info
== NULL
&& bfd_get_symcount (abfd
) > 0)
3109 /* Non-zero if doing a relocatable link. */
3110 int relocatable_p
= ! (abfd
->flags
& (EXEC_P
| DYNAMIC
));
3112 if (! swap_out_syms (abfd
, &strtab
, relocatable_p
))
3116 if (link_info
== NULL
)
3118 bfd_map_over_sections (abfd
, bfd_elf_set_group_contents
, &failed
);
3123 shstrtab_hdr
= &elf_tdata (abfd
)->shstrtab_hdr
;
3124 /* sh_name was set in prep_headers. */
3125 shstrtab_hdr
->sh_type
= SHT_STRTAB
;
3126 shstrtab_hdr
->sh_flags
= 0;
3127 shstrtab_hdr
->sh_addr
= 0;
3128 shstrtab_hdr
->sh_size
= _bfd_elf_strtab_size (elf_shstrtab (abfd
));
3129 shstrtab_hdr
->sh_entsize
= 0;
3130 shstrtab_hdr
->sh_link
= 0;
3131 shstrtab_hdr
->sh_info
= 0;
3132 /* sh_offset is set in assign_file_positions_except_relocs. */
3133 shstrtab_hdr
->sh_addralign
= 1;
3135 if (!assign_file_positions_except_relocs (abfd
))
3138 if (link_info
== NULL
&& bfd_get_symcount (abfd
) > 0)
3141 Elf_Internal_Shdr
*hdr
;
3143 off
= elf_tdata (abfd
)->next_file_pos
;
3145 hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3146 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, TRUE
);
3148 hdr
= &elf_tdata (abfd
)->symtab_shndx_hdr
;
3149 if (hdr
->sh_size
!= 0)
3150 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, TRUE
);
3152 hdr
= &elf_tdata (abfd
)->strtab_hdr
;
3153 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, TRUE
);
3155 elf_tdata (abfd
)->next_file_pos
= off
;
3157 /* Now that we know where the .strtab section goes, write it
3159 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
3160 || ! _bfd_stringtab_emit (abfd
, strtab
))
3162 _bfd_stringtab_free (strtab
);
3165 abfd
->output_has_begun
= TRUE
;
3170 /* Create a mapping from a set of sections to a program segment. */
3172 static INLINE
struct elf_segment_map
*
3173 make_mapping (abfd
, sections
, from
, to
, phdr
)
3175 asection
**sections
;
3180 struct elf_segment_map
*m
;
3185 amt
= sizeof (struct elf_segment_map
);
3186 amt
+= (to
- from
- 1) * sizeof (asection
*);
3187 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
3191 m
->p_type
= PT_LOAD
;
3192 for (i
= from
, hdrpp
= sections
+ from
; i
< to
; i
++, hdrpp
++)
3193 m
->sections
[i
- from
] = *hdrpp
;
3194 m
->count
= to
- from
;
3196 if (from
== 0 && phdr
)
3198 /* Include the headers in the first PT_LOAD segment. */
3199 m
->includes_filehdr
= 1;
3200 m
->includes_phdrs
= 1;
3206 /* Set up a mapping from BFD sections to program segments. */
3209 map_sections_to_segments (abfd
)
3212 asection
**sections
= NULL
;
3216 struct elf_segment_map
*mfirst
;
3217 struct elf_segment_map
**pm
;
3218 struct elf_segment_map
*m
;
3220 unsigned int phdr_index
;
3221 bfd_vma maxpagesize
;
3223 bfd_boolean phdr_in_segment
= TRUE
;
3224 bfd_boolean writable
;
3226 asection
*first_tls
= NULL
;
3227 asection
*dynsec
, *eh_frame_hdr
;
3230 if (elf_tdata (abfd
)->segment_map
!= NULL
)
3233 if (bfd_count_sections (abfd
) == 0)
3236 /* Select the allocated sections, and sort them. */
3238 amt
= bfd_count_sections (abfd
) * sizeof (asection
*);
3239 sections
= (asection
**) bfd_malloc (amt
);
3240 if (sections
== NULL
)
3244 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
3246 if ((s
->flags
& SEC_ALLOC
) != 0)
3252 BFD_ASSERT (i
<= bfd_count_sections (abfd
));
3255 qsort (sections
, (size_t) count
, sizeof (asection
*), elf_sort_sections
);
3257 /* Build the mapping. */
3262 /* If we have a .interp section, then create a PT_PHDR segment for
3263 the program headers and a PT_INTERP segment for the .interp
3265 s
= bfd_get_section_by_name (abfd
, ".interp");
3266 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
3268 amt
= sizeof (struct elf_segment_map
);
3269 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
3273 m
->p_type
= PT_PHDR
;
3274 /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */
3275 m
->p_flags
= PF_R
| PF_X
;
3276 m
->p_flags_valid
= 1;
3277 m
->includes_phdrs
= 1;
3282 amt
= sizeof (struct elf_segment_map
);
3283 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
3287 m
->p_type
= PT_INTERP
;
3295 /* Look through the sections. We put sections in the same program
3296 segment when the start of the second section can be placed within
3297 a few bytes of the end of the first section. */
3300 maxpagesize
= get_elf_backend_data (abfd
)->maxpagesize
;
3302 dynsec
= bfd_get_section_by_name (abfd
, ".dynamic");
3304 && (dynsec
->flags
& SEC_LOAD
) == 0)
3307 /* Deal with -Ttext or something similar such that the first section
3308 is not adjacent to the program headers. This is an
3309 approximation, since at this point we don't know exactly how many
3310 program headers we will need. */
3313 bfd_size_type phdr_size
;
3315 phdr_size
= elf_tdata (abfd
)->program_header_size
;
3317 phdr_size
= get_elf_backend_data (abfd
)->s
->sizeof_phdr
;
3318 if ((abfd
->flags
& D_PAGED
) == 0
3319 || sections
[0]->lma
< phdr_size
3320 || sections
[0]->lma
% maxpagesize
< phdr_size
% maxpagesize
)
3321 phdr_in_segment
= FALSE
;
3324 for (i
= 0, hdrpp
= sections
; i
< count
; i
++, hdrpp
++)
3327 bfd_boolean new_segment
;
3331 /* See if this section and the last one will fit in the same
3334 if (last_hdr
== NULL
)
3336 /* If we don't have a segment yet, then we don't need a new
3337 one (we build the last one after this loop). */
3338 new_segment
= FALSE
;
3340 else if (last_hdr
->lma
- last_hdr
->vma
!= hdr
->lma
- hdr
->vma
)
3342 /* If this section has a different relation between the
3343 virtual address and the load address, then we need a new
3347 else if (BFD_ALIGN (last_hdr
->lma
+ last_hdr
->_raw_size
, maxpagesize
)
3348 < BFD_ALIGN (hdr
->lma
, maxpagesize
))
3350 /* If putting this section in this segment would force us to
3351 skip a page in the segment, then we need a new segment. */
3354 else if ((last_hdr
->flags
& SEC_LOAD
) == 0
3355 && (hdr
->flags
& SEC_LOAD
) != 0)
3357 /* We don't want to put a loadable section after a
3358 nonloadable section in the same segment. */
3361 else if ((abfd
->flags
& D_PAGED
) == 0)
3363 /* If the file is not demand paged, which means that we
3364 don't require the sections to be correctly aligned in the
3365 file, then there is no other reason for a new segment. */
3366 new_segment
= FALSE
;
3369 && (hdr
->flags
& SEC_READONLY
) == 0
3370 && (((last_hdr
->lma
+ last_hdr
->_raw_size
- 1)
3371 & ~(maxpagesize
- 1))
3372 != (hdr
->lma
& ~(maxpagesize
- 1))))
3374 /* We don't want to put a writable section in a read only
3375 segment, unless they are on the same page in memory
3376 anyhow. We already know that the last section does not
3377 bring us past the current section on the page, so the
3378 only case in which the new section is not on the same
3379 page as the previous section is when the previous section
3380 ends precisely on a page boundary. */
3385 /* Otherwise, we can use the same segment. */
3386 new_segment
= FALSE
;
3391 if ((hdr
->flags
& SEC_READONLY
) == 0)
3397 /* We need a new program segment. We must create a new program
3398 header holding all the sections from phdr_index until hdr. */
3400 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_segment
);
3407 if ((hdr
->flags
& SEC_READONLY
) == 0)
3414 phdr_in_segment
= FALSE
;
3417 /* Create a final PT_LOAD program segment. */
3418 if (last_hdr
!= NULL
)
3420 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_segment
);
3428 /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */
3431 amt
= sizeof (struct elf_segment_map
);
3432 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
3436 m
->p_type
= PT_DYNAMIC
;
3438 m
->sections
[0] = dynsec
;
3444 /* For each loadable .note section, add a PT_NOTE segment. We don't
3445 use bfd_get_section_by_name, because if we link together
3446 nonloadable .note sections and loadable .note sections, we will
3447 generate two .note sections in the output file. FIXME: Using
3448 names for section types is bogus anyhow. */
3449 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
3451 if ((s
->flags
& SEC_LOAD
) != 0
3452 && strncmp (s
->name
, ".note", 5) == 0)
3454 amt
= sizeof (struct elf_segment_map
);
3455 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
3459 m
->p_type
= PT_NOTE
;
3466 if (s
->flags
& SEC_THREAD_LOCAL
)
3474 /* If there are any SHF_TLS output sections, add PT_TLS segment. */
3479 amt
= sizeof (struct elf_segment_map
);
3480 amt
+= (tls_count
- 1) * sizeof (asection
*);
3481 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
3486 m
->count
= tls_count
;
3487 /* Mandated PF_R. */
3489 m
->p_flags_valid
= 1;
3490 for (i
= 0; i
< tls_count
; ++i
)
3492 BFD_ASSERT (first_tls
->flags
& SEC_THREAD_LOCAL
);
3493 m
->sections
[i
] = first_tls
;
3494 first_tls
= first_tls
->next
;
3501 /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME
3503 eh_frame_hdr
= elf_tdata (abfd
)->eh_frame_hdr
;
3504 if (eh_frame_hdr
!= NULL
3505 && (eh_frame_hdr
->output_section
->flags
& SEC_LOAD
) != 0)
3507 amt
= sizeof (struct elf_segment_map
);
3508 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
3512 m
->p_type
= PT_GNU_EH_FRAME
;
3514 m
->sections
[0] = eh_frame_hdr
->output_section
;
3520 if (elf_tdata (abfd
)->stack_flags
)
3522 amt
= sizeof (struct elf_segment_map
);
3523 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
3527 m
->p_type
= PT_GNU_STACK
;
3528 m
->p_flags
= elf_tdata (abfd
)->stack_flags
;
3529 m
->p_flags_valid
= 1;
3538 elf_tdata (abfd
)->segment_map
= mfirst
;
3542 if (sections
!= NULL
)
3547 /* Sort sections by address. */
3550 elf_sort_sections (arg1
, arg2
)
3554 const asection
*sec1
= *(const asection
**) arg1
;
3555 const asection
*sec2
= *(const asection
**) arg2
;
3556 bfd_size_type size1
, size2
;
3558 /* Sort by LMA first, since this is the address used to
3559 place the section into a segment. */
3560 if (sec1
->lma
< sec2
->lma
)
3562 else if (sec1
->lma
> sec2
->lma
)
3565 /* Then sort by VMA. Normally the LMA and the VMA will be
3566 the same, and this will do nothing. */
3567 if (sec1
->vma
< sec2
->vma
)
3569 else if (sec1
->vma
> sec2
->vma
)
3572 /* Put !SEC_LOAD sections after SEC_LOAD ones. */
3574 #define TOEND(x) (((x)->flags & (SEC_LOAD | SEC_THREAD_LOCAL)) == 0)
3580 /* If the indicies are the same, do not return 0
3581 here, but continue to try the next comparison. */
3582 if (sec1
->target_index
- sec2
->target_index
!= 0)
3583 return sec1
->target_index
- sec2
->target_index
;
3588 else if (TOEND (sec2
))
3593 /* Sort by size, to put zero sized sections
3594 before others at the same address. */
3596 size1
= (sec1
->flags
& SEC_LOAD
) ? sec1
->_raw_size
: 0;
3597 size2
= (sec2
->flags
& SEC_LOAD
) ? sec2
->_raw_size
: 0;
3604 return sec1
->target_index
- sec2
->target_index
;
3607 /* Assign file positions to the sections based on the mapping from
3608 sections to segments. This function also sets up some fields in
3609 the file header, and writes out the program headers. */
3612 assign_file_positions_for_segments (abfd
)
3615 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3617 struct elf_segment_map
*m
;
3619 Elf_Internal_Phdr
*phdrs
;
3621 bfd_vma filehdr_vaddr
, filehdr_paddr
;
3622 bfd_vma phdrs_vaddr
, phdrs_paddr
;
3623 Elf_Internal_Phdr
*p
;
3626 if (elf_tdata (abfd
)->segment_map
== NULL
)
3628 if (! map_sections_to_segments (abfd
))
3633 /* The placement algorithm assumes that non allocated sections are
3634 not in PT_LOAD segments. We ensure this here by removing such
3635 sections from the segment map. */
3636 for (m
= elf_tdata (abfd
)->segment_map
;
3640 unsigned int new_count
;
3643 if (m
->p_type
!= PT_LOAD
)
3647 for (i
= 0; i
< m
->count
; i
++)
3649 if ((m
->sections
[i
]->flags
& SEC_ALLOC
) != 0)
3652 m
->sections
[new_count
] = m
->sections
[i
];
3658 if (new_count
!= m
->count
)
3659 m
->count
= new_count
;
3663 if (bed
->elf_backend_modify_segment_map
)
3665 if (! (*bed
->elf_backend_modify_segment_map
) (abfd
))
3670 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
3673 elf_elfheader (abfd
)->e_phoff
= bed
->s
->sizeof_ehdr
;
3674 elf_elfheader (abfd
)->e_phentsize
= bed
->s
->sizeof_phdr
;
3675 elf_elfheader (abfd
)->e_phnum
= count
;
3680 /* If we already counted the number of program segments, make sure
3681 that we allocated enough space. This happens when SIZEOF_HEADERS
3682 is used in a linker script. */
3683 alloc
= elf_tdata (abfd
)->program_header_size
/ bed
->s
->sizeof_phdr
;
3684 if (alloc
!= 0 && count
> alloc
)
3686 ((*_bfd_error_handler
)
3687 (_("%s: Not enough room for program headers (allocated %u, need %u)"),
3688 bfd_get_filename (abfd
), alloc
, count
));
3689 bfd_set_error (bfd_error_bad_value
);
3696 amt
= alloc
* sizeof (Elf_Internal_Phdr
);
3697 phdrs
= (Elf_Internal_Phdr
*) bfd_alloc (abfd
, amt
);
3701 off
= bed
->s
->sizeof_ehdr
;
3702 off
+= alloc
* bed
->s
->sizeof_phdr
;
3709 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
3716 /* If elf_segment_map is not from map_sections_to_segments, the
3717 sections may not be correctly ordered. NOTE: sorting should
3718 not be done to the PT_NOTE section of a corefile, which may
3719 contain several pseudo-sections artificially created by bfd.
3720 Sorting these pseudo-sections breaks things badly. */
3722 && !(elf_elfheader (abfd
)->e_type
== ET_CORE
3723 && m
->p_type
== PT_NOTE
))
3724 qsort (m
->sections
, (size_t) m
->count
, sizeof (asection
*),
3727 p
->p_type
= m
->p_type
;
3728 p
->p_flags
= m
->p_flags
;
3730 if (p
->p_type
== PT_LOAD
3732 && (m
->sections
[0]->flags
& SEC_ALLOC
) != 0)
3734 if ((abfd
->flags
& D_PAGED
) != 0)
3735 off
+= (m
->sections
[0]->vma
- off
) % bed
->maxpagesize
;
3738 bfd_size_type align
;
3741 for (i
= 0, secpp
= m
->sections
; i
< m
->count
; i
++, secpp
++)
3743 bfd_size_type secalign
;
3745 secalign
= bfd_get_section_alignment (abfd
, *secpp
);
3746 if (secalign
> align
)
3750 off
+= (m
->sections
[0]->vma
- off
) % (1 << align
);
3757 p
->p_vaddr
= m
->sections
[0]->vma
;
3759 if (m
->p_paddr_valid
)
3760 p
->p_paddr
= m
->p_paddr
;
3761 else if (m
->count
== 0)
3764 p
->p_paddr
= m
->sections
[0]->lma
;
3766 if (p
->p_type
== PT_LOAD
3767 && (abfd
->flags
& D_PAGED
) != 0)
3768 p
->p_align
= bed
->maxpagesize
;
3769 else if (m
->count
== 0)
3770 p
->p_align
= 1 << bed
->s
->log_file_align
;
3778 if (m
->includes_filehdr
)
3780 if (! m
->p_flags_valid
)
3783 p
->p_filesz
= bed
->s
->sizeof_ehdr
;
3784 p
->p_memsz
= bed
->s
->sizeof_ehdr
;
3787 BFD_ASSERT (p
->p_type
== PT_LOAD
);
3789 if (p
->p_vaddr
< (bfd_vma
) off
)
3791 (*_bfd_error_handler
)
3792 (_("%s: Not enough room for program headers, try linking with -N"),
3793 bfd_get_filename (abfd
));
3794 bfd_set_error (bfd_error_bad_value
);
3799 if (! m
->p_paddr_valid
)
3802 if (p
->p_type
== PT_LOAD
)
3804 filehdr_vaddr
= p
->p_vaddr
;
3805 filehdr_paddr
= p
->p_paddr
;
3809 if (m
->includes_phdrs
)
3811 if (! m
->p_flags_valid
)
3814 if (m
->includes_filehdr
)
3816 if (p
->p_type
== PT_LOAD
)
3818 phdrs_vaddr
= p
->p_vaddr
+ bed
->s
->sizeof_ehdr
;
3819 phdrs_paddr
= p
->p_paddr
+ bed
->s
->sizeof_ehdr
;
3824 p
->p_offset
= bed
->s
->sizeof_ehdr
;
3828 BFD_ASSERT (p
->p_type
== PT_LOAD
);
3829 p
->p_vaddr
-= off
- p
->p_offset
;
3830 if (! m
->p_paddr_valid
)
3831 p
->p_paddr
-= off
- p
->p_offset
;
3834 if (p
->p_type
== PT_LOAD
)
3836 phdrs_vaddr
= p
->p_vaddr
;
3837 phdrs_paddr
= p
->p_paddr
;
3840 phdrs_vaddr
= bed
->maxpagesize
+ bed
->s
->sizeof_ehdr
;
3843 p
->p_filesz
+= alloc
* bed
->s
->sizeof_phdr
;
3844 p
->p_memsz
+= alloc
* bed
->s
->sizeof_phdr
;
3847 if (p
->p_type
== PT_LOAD
3848 || (p
->p_type
== PT_NOTE
&& bfd_get_format (abfd
) == bfd_core
))
3850 if (! m
->includes_filehdr
&& ! m
->includes_phdrs
)
3856 adjust
= off
- (p
->p_offset
+ p
->p_filesz
);
3857 p
->p_filesz
+= adjust
;
3858 p
->p_memsz
+= adjust
;
3864 for (i
= 0, secpp
= m
->sections
; i
< m
->count
; i
++, secpp
++)
3868 bfd_size_type align
;
3872 align
= 1 << bfd_get_section_alignment (abfd
, sec
);
3874 /* The section may have artificial alignment forced by a
3875 link script. Notice this case by the gap between the
3876 cumulative phdr lma and the section's lma. */
3877 if (p
->p_paddr
+ p
->p_memsz
< sec
->lma
)
3879 bfd_vma adjust
= sec
->lma
- (p
->p_paddr
+ p
->p_memsz
);
3881 p
->p_memsz
+= adjust
;
3882 if (p
->p_type
== PT_LOAD
3883 || (p
->p_type
== PT_NOTE
3884 && bfd_get_format (abfd
) == bfd_core
))
3889 if ((flags
& SEC_LOAD
) != 0
3890 || (flags
& SEC_THREAD_LOCAL
) != 0)
3891 p
->p_filesz
+= adjust
;
3894 if (p
->p_type
== PT_LOAD
)
3896 bfd_signed_vma adjust
;
3898 if ((flags
& SEC_LOAD
) != 0)
3900 adjust
= sec
->lma
- (p
->p_paddr
+ p
->p_memsz
);
3904 else if ((flags
& SEC_ALLOC
) != 0)
3906 /* The section VMA must equal the file position
3907 modulo the page size. FIXME: I'm not sure if
3908 this adjustment is really necessary. We used to
3909 not have the SEC_LOAD case just above, and then
3910 this was necessary, but now I'm not sure. */
3911 if ((abfd
->flags
& D_PAGED
) != 0)
3912 adjust
= (sec
->vma
- voff
) % bed
->maxpagesize
;
3914 adjust
= (sec
->vma
- voff
) % align
;
3923 (* _bfd_error_handler
) (_("\
3924 Error: First section in segment (%s) starts at 0x%x whereas the segment starts at 0x%x"),
3925 bfd_section_name (abfd
, sec
),
3930 p
->p_memsz
+= adjust
;
3933 if ((flags
& SEC_LOAD
) != 0)
3934 p
->p_filesz
+= adjust
;
3939 /* We check SEC_HAS_CONTENTS here because if NOLOAD is
3940 used in a linker script we may have a section with
3941 SEC_LOAD clear but which is supposed to have
3943 if ((flags
& SEC_LOAD
) != 0
3944 || (flags
& SEC_HAS_CONTENTS
) != 0)
3945 off
+= sec
->_raw_size
;
3947 if ((flags
& SEC_ALLOC
) != 0
3948 && ((flags
& SEC_LOAD
) != 0
3949 || (flags
& SEC_THREAD_LOCAL
) == 0))
3950 voff
+= sec
->_raw_size
;
3953 if (p
->p_type
== PT_NOTE
&& bfd_get_format (abfd
) == bfd_core
)
3955 /* The actual "note" segment has i == 0.
3956 This is the one that actually contains everything. */
3960 p
->p_filesz
= sec
->_raw_size
;
3961 off
+= sec
->_raw_size
;
3966 /* Fake sections -- don't need to be written. */
3969 flags
= sec
->flags
= 0;
3976 if ((sec
->flags
& SEC_LOAD
) != 0
3977 || (sec
->flags
& SEC_THREAD_LOCAL
) == 0
3978 || p
->p_type
== PT_TLS
)
3979 p
->p_memsz
+= sec
->_raw_size
;
3981 if ((flags
& SEC_LOAD
) != 0)
3982 p
->p_filesz
+= sec
->_raw_size
;
3984 if (p
->p_type
== PT_TLS
3985 && sec
->_raw_size
== 0
3986 && (sec
->flags
& SEC_HAS_CONTENTS
) == 0)
3988 struct bfd_link_order
*o
;
3989 bfd_vma tbss_size
= 0;
3991 for (o
= sec
->link_order_head
; o
!= NULL
; o
= o
->next
)
3992 if (tbss_size
< o
->offset
+ o
->size
)
3993 tbss_size
= o
->offset
+ o
->size
;
3995 p
->p_memsz
+= tbss_size
;
3998 if (align
> p
->p_align
3999 && (p
->p_type
!= PT_LOAD
|| (abfd
->flags
& D_PAGED
) == 0))
4003 if (! m
->p_flags_valid
)
4006 if ((flags
& SEC_CODE
) != 0)
4008 if ((flags
& SEC_READONLY
) == 0)
4014 /* Now that we have set the section file positions, we can set up
4015 the file positions for the non PT_LOAD segments. */
4016 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
4020 if (p
->p_type
!= PT_LOAD
&& m
->count
> 0)
4022 BFD_ASSERT (! m
->includes_filehdr
&& ! m
->includes_phdrs
);
4023 p
->p_offset
= m
->sections
[0]->filepos
;
4027 if (m
->includes_filehdr
)
4029 p
->p_vaddr
= filehdr_vaddr
;
4030 if (! m
->p_paddr_valid
)
4031 p
->p_paddr
= filehdr_paddr
;
4033 else if (m
->includes_phdrs
)
4035 p
->p_vaddr
= phdrs_vaddr
;
4036 if (! m
->p_paddr_valid
)
4037 p
->p_paddr
= phdrs_paddr
;
4042 /* Clear out any program headers we allocated but did not use. */
4043 for (; count
< alloc
; count
++, p
++)
4045 memset (p
, 0, sizeof *p
);
4046 p
->p_type
= PT_NULL
;
4049 elf_tdata (abfd
)->phdr
= phdrs
;
4051 elf_tdata (abfd
)->next_file_pos
= off
;
4053 /* Write out the program headers. */
4054 if (bfd_seek (abfd
, (bfd_signed_vma
) bed
->s
->sizeof_ehdr
, SEEK_SET
) != 0
4055 || bed
->s
->write_out_phdrs (abfd
, phdrs
, alloc
) != 0)
4061 /* Get the size of the program header.
4063 If this is called by the linker before any of the section VMA's are set, it
4064 can't calculate the correct value for a strange memory layout. This only
4065 happens when SIZEOF_HEADERS is used in a linker script. In this case,
4066 SORTED_HDRS is NULL and we assume the normal scenario of one text and one
4067 data segment (exclusive of .interp and .dynamic).
4069 ??? User written scripts must either not use SIZEOF_HEADERS, or assume there
4070 will be two segments. */
4072 static bfd_size_type
4073 get_program_header_size (abfd
)
4078 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
4080 /* We can't return a different result each time we're called. */
4081 if (elf_tdata (abfd
)->program_header_size
!= 0)
4082 return elf_tdata (abfd
)->program_header_size
;
4084 if (elf_tdata (abfd
)->segment_map
!= NULL
)
4086 struct elf_segment_map
*m
;
4089 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
4091 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
4092 return elf_tdata (abfd
)->program_header_size
;
4095 /* Assume we will need exactly two PT_LOAD segments: one for text
4096 and one for data. */
4099 s
= bfd_get_section_by_name (abfd
, ".interp");
4100 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
4102 /* If we have a loadable interpreter section, we need a
4103 PT_INTERP segment. In this case, assume we also need a
4104 PT_PHDR segment, although that may not be true for all
4109 if (bfd_get_section_by_name (abfd
, ".dynamic") != NULL
)
4111 /* We need a PT_DYNAMIC segment. */
4115 if (elf_tdata (abfd
)->eh_frame_hdr
)
4117 /* We need a PT_GNU_EH_FRAME segment. */
4121 if (elf_tdata (abfd
)->stack_flags
)
4123 /* We need a PT_GNU_STACK segment. */
4127 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
4129 if ((s
->flags
& SEC_LOAD
) != 0
4130 && strncmp (s
->name
, ".note", 5) == 0)
4132 /* We need a PT_NOTE segment. */
4137 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
4139 if (s
->flags
& SEC_THREAD_LOCAL
)
4141 /* We need a PT_TLS segment. */
4147 /* Let the backend count up any program headers it might need. */
4148 if (bed
->elf_backend_additional_program_headers
)
4152 a
= (*bed
->elf_backend_additional_program_headers
) (abfd
);
4158 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
4159 return elf_tdata (abfd
)->program_header_size
;
4162 /* Work out the file positions of all the sections. This is called by
4163 _bfd_elf_compute_section_file_positions. All the section sizes and
4164 VMAs must be known before this is called.
4166 We do not consider reloc sections at this point, unless they form
4167 part of the loadable image. Reloc sections are assigned file
4168 positions in assign_file_positions_for_relocs, which is called by
4169 write_object_contents and final_link.
4171 We also don't set the positions of the .symtab and .strtab here. */
4174 assign_file_positions_except_relocs (abfd
)
4177 struct elf_obj_tdata
* const tdata
= elf_tdata (abfd
);
4178 Elf_Internal_Ehdr
* const i_ehdrp
= elf_elfheader (abfd
);
4179 Elf_Internal_Shdr
** const i_shdrpp
= elf_elfsections (abfd
);
4180 unsigned int num_sec
= elf_numsections (abfd
);
4182 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
4184 if ((abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0
4185 && bfd_get_format (abfd
) != bfd_core
)
4187 Elf_Internal_Shdr
**hdrpp
;
4190 /* Start after the ELF header. */
4191 off
= i_ehdrp
->e_ehsize
;
4193 /* We are not creating an executable, which means that we are
4194 not creating a program header, and that the actual order of
4195 the sections in the file is unimportant. */
4196 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< num_sec
; i
++, hdrpp
++)
4198 Elf_Internal_Shdr
*hdr
;
4201 if (hdr
->sh_type
== SHT_REL
4202 || hdr
->sh_type
== SHT_RELA
4203 || i
== tdata
->symtab_section
4204 || i
== tdata
->symtab_shndx_section
4205 || i
== tdata
->strtab_section
)
4207 hdr
->sh_offset
= -1;
4210 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, TRUE
);
4212 if (i
== SHN_LORESERVE
- 1)
4214 i
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
4215 hdrpp
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
4222 Elf_Internal_Shdr
**hdrpp
;
4224 /* Assign file positions for the loaded sections based on the
4225 assignment of sections to segments. */
4226 if (! assign_file_positions_for_segments (abfd
))
4229 /* Assign file positions for the other sections. */
4231 off
= elf_tdata (abfd
)->next_file_pos
;
4232 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< num_sec
; i
++, hdrpp
++)
4234 Elf_Internal_Shdr
*hdr
;
4237 if (hdr
->bfd_section
!= NULL
4238 && hdr
->bfd_section
->filepos
!= 0)
4239 hdr
->sh_offset
= hdr
->bfd_section
->filepos
;
4240 else if ((hdr
->sh_flags
& SHF_ALLOC
) != 0)
4242 ((*_bfd_error_handler
)
4243 (_("%s: warning: allocated section `%s' not in segment"),
4244 bfd_get_filename (abfd
),
4245 (hdr
->bfd_section
== NULL
4247 : hdr
->bfd_section
->name
)));
4248 if ((abfd
->flags
& D_PAGED
) != 0)
4249 off
+= (hdr
->sh_addr
- off
) % bed
->maxpagesize
;
4251 off
+= (hdr
->sh_addr
- off
) % hdr
->sh_addralign
;
4252 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
,
4255 else if (hdr
->sh_type
== SHT_REL
4256 || hdr
->sh_type
== SHT_RELA
4257 || hdr
== i_shdrpp
[tdata
->symtab_section
]
4258 || hdr
== i_shdrpp
[tdata
->symtab_shndx_section
]
4259 || hdr
== i_shdrpp
[tdata
->strtab_section
])
4260 hdr
->sh_offset
= -1;
4262 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, TRUE
);
4264 if (i
== SHN_LORESERVE
- 1)
4266 i
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
4267 hdrpp
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
4272 /* Place the section headers. */
4273 off
= align_file_position (off
, 1 << bed
->s
->log_file_align
);
4274 i_ehdrp
->e_shoff
= off
;
4275 off
+= i_ehdrp
->e_shnum
* i_ehdrp
->e_shentsize
;
4277 elf_tdata (abfd
)->next_file_pos
= off
;
4286 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
4287 Elf_Internal_Phdr
*i_phdrp
= 0; /* Program header table, internal form */
4288 Elf_Internal_Shdr
**i_shdrp
; /* Section header table, internal form */
4289 struct elf_strtab_hash
*shstrtab
;
4290 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
4292 i_ehdrp
= elf_elfheader (abfd
);
4293 i_shdrp
= elf_elfsections (abfd
);
4295 shstrtab
= _bfd_elf_strtab_init ();
4296 if (shstrtab
== NULL
)
4299 elf_shstrtab (abfd
) = shstrtab
;
4301 i_ehdrp
->e_ident
[EI_MAG0
] = ELFMAG0
;
4302 i_ehdrp
->e_ident
[EI_MAG1
] = ELFMAG1
;
4303 i_ehdrp
->e_ident
[EI_MAG2
] = ELFMAG2
;
4304 i_ehdrp
->e_ident
[EI_MAG3
] = ELFMAG3
;
4306 i_ehdrp
->e_ident
[EI_CLASS
] = bed
->s
->elfclass
;
4307 i_ehdrp
->e_ident
[EI_DATA
] =
4308 bfd_big_endian (abfd
) ? ELFDATA2MSB
: ELFDATA2LSB
;
4309 i_ehdrp
->e_ident
[EI_VERSION
] = bed
->s
->ev_current
;
4311 if ((abfd
->flags
& DYNAMIC
) != 0)
4312 i_ehdrp
->e_type
= ET_DYN
;
4313 else if ((abfd
->flags
& EXEC_P
) != 0)
4314 i_ehdrp
->e_type
= ET_EXEC
;
4315 else if (bfd_get_format (abfd
) == bfd_core
)
4316 i_ehdrp
->e_type
= ET_CORE
;
4318 i_ehdrp
->e_type
= ET_REL
;
4320 switch (bfd_get_arch (abfd
))
4322 case bfd_arch_unknown
:
4323 i_ehdrp
->e_machine
= EM_NONE
;
4326 /* There used to be a long list of cases here, each one setting
4327 e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE
4328 in the corresponding bfd definition. To avoid duplication,
4329 the switch was removed. Machines that need special handling
4330 can generally do it in elf_backend_final_write_processing(),
4331 unless they need the information earlier than the final write.
4332 Such need can generally be supplied by replacing the tests for
4333 e_machine with the conditions used to determine it. */
4335 if (get_elf_backend_data (abfd
) != NULL
)
4336 i_ehdrp
->e_machine
= get_elf_backend_data (abfd
)->elf_machine_code
;
4338 i_ehdrp
->e_machine
= EM_NONE
;
4341 i_ehdrp
->e_version
= bed
->s
->ev_current
;
4342 i_ehdrp
->e_ehsize
= bed
->s
->sizeof_ehdr
;
4344 /* No program header, for now. */
4345 i_ehdrp
->e_phoff
= 0;
4346 i_ehdrp
->e_phentsize
= 0;
4347 i_ehdrp
->e_phnum
= 0;
4349 /* Each bfd section is section header entry. */
4350 i_ehdrp
->e_entry
= bfd_get_start_address (abfd
);
4351 i_ehdrp
->e_shentsize
= bed
->s
->sizeof_shdr
;
4353 /* If we're building an executable, we'll need a program header table. */
4354 if (abfd
->flags
& EXEC_P
)
4356 /* It all happens later. */
4358 i_ehdrp
->e_phentsize
= sizeof (Elf_External_Phdr
);
4360 /* elf_build_phdrs() returns a (NULL-terminated) array of
4361 Elf_Internal_Phdrs. */
4362 i_phdrp
= elf_build_phdrs (abfd
, i_ehdrp
, i_shdrp
, &i_ehdrp
->e_phnum
);
4363 i_ehdrp
->e_phoff
= outbase
;
4364 outbase
+= i_ehdrp
->e_phentsize
* i_ehdrp
->e_phnum
;
4369 i_ehdrp
->e_phentsize
= 0;
4371 i_ehdrp
->e_phoff
= 0;
4374 elf_tdata (abfd
)->symtab_hdr
.sh_name
=
4375 (unsigned int) _bfd_elf_strtab_add (shstrtab
, ".symtab", FALSE
);
4376 elf_tdata (abfd
)->strtab_hdr
.sh_name
=
4377 (unsigned int) _bfd_elf_strtab_add (shstrtab
, ".strtab", FALSE
);
4378 elf_tdata (abfd
)->shstrtab_hdr
.sh_name
=
4379 (unsigned int) _bfd_elf_strtab_add (shstrtab
, ".shstrtab", FALSE
);
4380 if (elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
4381 || elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
4382 || elf_tdata (abfd
)->shstrtab_hdr
.sh_name
== (unsigned int) -1)
4388 /* Assign file positions for all the reloc sections which are not part
4389 of the loadable file image. */
4392 _bfd_elf_assign_file_positions_for_relocs (abfd
)
4396 unsigned int i
, num_sec
;
4397 Elf_Internal_Shdr
**shdrpp
;
4399 off
= elf_tdata (abfd
)->next_file_pos
;
4401 num_sec
= elf_numsections (abfd
);
4402 for (i
= 1, shdrpp
= elf_elfsections (abfd
) + 1; i
< num_sec
; i
++, shdrpp
++)
4404 Elf_Internal_Shdr
*shdrp
;
4407 if ((shdrp
->sh_type
== SHT_REL
|| shdrp
->sh_type
== SHT_RELA
)
4408 && shdrp
->sh_offset
== -1)
4409 off
= _bfd_elf_assign_file_position_for_section (shdrp
, off
, TRUE
);
4412 elf_tdata (abfd
)->next_file_pos
= off
;
4416 _bfd_elf_write_object_contents (abfd
)
4419 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
4420 Elf_Internal_Ehdr
*i_ehdrp
;
4421 Elf_Internal_Shdr
**i_shdrp
;
4423 unsigned int count
, num_sec
;
4425 if (! abfd
->output_has_begun
4426 && ! _bfd_elf_compute_section_file_positions
4427 (abfd
, (struct bfd_link_info
*) NULL
))
4430 i_shdrp
= elf_elfsections (abfd
);
4431 i_ehdrp
= elf_elfheader (abfd
);
4434 bfd_map_over_sections (abfd
, bed
->s
->write_relocs
, &failed
);
4438 _bfd_elf_assign_file_positions_for_relocs (abfd
);
4440 /* After writing the headers, we need to write the sections too... */
4441 num_sec
= elf_numsections (abfd
);
4442 for (count
= 1; count
< num_sec
; count
++)
4444 if (bed
->elf_backend_section_processing
)
4445 (*bed
->elf_backend_section_processing
) (abfd
, i_shdrp
[count
]);
4446 if (i_shdrp
[count
]->contents
)
4448 bfd_size_type amt
= i_shdrp
[count
]->sh_size
;
4450 if (bfd_seek (abfd
, i_shdrp
[count
]->sh_offset
, SEEK_SET
) != 0
4451 || bfd_bwrite (i_shdrp
[count
]->contents
, amt
, abfd
) != amt
)
4454 if (count
== SHN_LORESERVE
- 1)
4455 count
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
4458 /* Write out the section header names. */
4459 if (bfd_seek (abfd
, elf_tdata (abfd
)->shstrtab_hdr
.sh_offset
, SEEK_SET
) != 0
4460 || ! _bfd_elf_strtab_emit (abfd
, elf_shstrtab (abfd
)))
4463 if (bed
->elf_backend_final_write_processing
)
4464 (*bed
->elf_backend_final_write_processing
) (abfd
,
4465 elf_tdata (abfd
)->linker
);
4467 return bed
->s
->write_shdrs_and_ehdr (abfd
);
4471 _bfd_elf_write_corefile_contents (abfd
)
4474 /* Hopefully this can be done just like an object file. */
4475 return _bfd_elf_write_object_contents (abfd
);
4478 /* Given a section, search the header to find them. */
4481 _bfd_elf_section_from_bfd_section (abfd
, asect
)
4485 struct elf_backend_data
*bed
;
4488 if (elf_section_data (asect
) != NULL
4489 && elf_section_data (asect
)->this_idx
!= 0)
4490 return elf_section_data (asect
)->this_idx
;
4492 if (bfd_is_abs_section (asect
))
4494 else if (bfd_is_com_section (asect
))
4496 else if (bfd_is_und_section (asect
))
4500 Elf_Internal_Shdr
**i_shdrp
= elf_elfsections (abfd
);
4501 int maxindex
= elf_numsections (abfd
);
4503 for (index
= 1; index
< maxindex
; index
++)
4505 Elf_Internal_Shdr
*hdr
= i_shdrp
[index
];
4507 if (hdr
!= NULL
&& hdr
->bfd_section
== asect
)
4513 bed
= get_elf_backend_data (abfd
);
4514 if (bed
->elf_backend_section_from_bfd_section
)
4518 if ((*bed
->elf_backend_section_from_bfd_section
) (abfd
, asect
, &retval
))
4523 bfd_set_error (bfd_error_nonrepresentable_section
);
4528 /* Given a BFD symbol, return the index in the ELF symbol table, or -1
4532 _bfd_elf_symbol_from_bfd_symbol (abfd
, asym_ptr_ptr
)
4534 asymbol
**asym_ptr_ptr
;
4536 asymbol
*asym_ptr
= *asym_ptr_ptr
;
4538 flagword flags
= asym_ptr
->flags
;
4540 /* When gas creates relocations against local labels, it creates its
4541 own symbol for the section, but does put the symbol into the
4542 symbol chain, so udata is 0. When the linker is generating
4543 relocatable output, this section symbol may be for one of the
4544 input sections rather than the output section. */
4545 if (asym_ptr
->udata
.i
== 0
4546 && (flags
& BSF_SECTION_SYM
)
4547 && asym_ptr
->section
)
4551 if (asym_ptr
->section
->output_section
!= NULL
)
4552 indx
= asym_ptr
->section
->output_section
->index
;
4554 indx
= asym_ptr
->section
->index
;
4555 if (indx
< elf_num_section_syms (abfd
)
4556 && elf_section_syms (abfd
)[indx
] != NULL
)
4557 asym_ptr
->udata
.i
= elf_section_syms (abfd
)[indx
]->udata
.i
;
4560 idx
= asym_ptr
->udata
.i
;
4564 /* This case can occur when using --strip-symbol on a symbol
4565 which is used in a relocation entry. */
4566 (*_bfd_error_handler
)
4567 (_("%s: symbol `%s' required but not present"),
4568 bfd_archive_filename (abfd
), bfd_asymbol_name (asym_ptr
));
4569 bfd_set_error (bfd_error_no_symbols
);
4576 "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n",
4577 (long) asym_ptr
, asym_ptr
->name
, idx
, flags
,
4578 elf_symbol_flags (flags
));
4586 /* Copy private BFD data. This copies any program header information. */
4589 copy_private_bfd_data (ibfd
, obfd
)
4593 Elf_Internal_Ehdr
*iehdr
;
4594 struct elf_segment_map
*map
;
4595 struct elf_segment_map
*map_first
;
4596 struct elf_segment_map
**pointer_to_map
;
4597 Elf_Internal_Phdr
*segment
;
4600 unsigned int num_segments
;
4601 bfd_boolean phdr_included
= FALSE
;
4602 bfd_vma maxpagesize
;
4603 struct elf_segment_map
*phdr_adjust_seg
= NULL
;
4604 unsigned int phdr_adjust_num
= 0;
4605 struct elf_backend_data
*bed
;
4607 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
4608 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
4611 if (elf_tdata (ibfd
)->phdr
== NULL
)
4614 bed
= get_elf_backend_data (ibfd
);
4615 iehdr
= elf_elfheader (ibfd
);
4618 pointer_to_map
= &map_first
;
4620 num_segments
= elf_elfheader (ibfd
)->e_phnum
;
4621 maxpagesize
= get_elf_backend_data (obfd
)->maxpagesize
;
4623 /* Returns the end address of the segment + 1. */
4624 #define SEGMENT_END(segment, start) \
4625 (start + (segment->p_memsz > segment->p_filesz \
4626 ? segment->p_memsz : segment->p_filesz))
4628 #define SECTION_SIZE(section, segment) \
4629 (((section->flags & (SEC_HAS_CONTENTS | SEC_THREAD_LOCAL)) \
4630 != SEC_THREAD_LOCAL || segment->p_type == PT_TLS) \
4631 ? section->_raw_size : 0)
4633 /* Returns TRUE if the given section is contained within
4634 the given segment. VMA addresses are compared. */
4635 #define IS_CONTAINED_BY_VMA(section, segment) \
4636 (section->vma >= segment->p_vaddr \
4637 && (section->vma + SECTION_SIZE (section, segment) \
4638 <= (SEGMENT_END (segment, segment->p_vaddr))))
4640 /* Returns TRUE if the given section is contained within
4641 the given segment. LMA addresses are compared. */
4642 #define IS_CONTAINED_BY_LMA(section, segment, base) \
4643 (section->lma >= base \
4644 && (section->lma + SECTION_SIZE (section, segment) \
4645 <= SEGMENT_END (segment, base)))
4647 /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */
4648 #define IS_COREFILE_NOTE(p, s) \
4649 (p->p_type == PT_NOTE \
4650 && bfd_get_format (ibfd) == bfd_core \
4651 && s->vma == 0 && s->lma == 0 \
4652 && (bfd_vma) s->filepos >= p->p_offset \
4653 && ((bfd_vma) s->filepos + s->_raw_size \
4654 <= p->p_offset + p->p_filesz))
4656 /* The complicated case when p_vaddr is 0 is to handle the Solaris
4657 linker, which generates a PT_INTERP section with p_vaddr and
4658 p_memsz set to 0. */
4659 #define IS_SOLARIS_PT_INTERP(p, s) \
4661 && p->p_paddr == 0 \
4662 && p->p_memsz == 0 \
4663 && p->p_filesz > 0 \
4664 && (s->flags & SEC_HAS_CONTENTS) != 0 \
4665 && s->_raw_size > 0 \
4666 && (bfd_vma) s->filepos >= p->p_offset \
4667 && ((bfd_vma) s->filepos + s->_raw_size \
4668 <= p->p_offset + p->p_filesz))
4670 /* Decide if the given section should be included in the given segment.
4671 A section will be included if:
4672 1. It is within the address space of the segment -- we use the LMA
4673 if that is set for the segment and the VMA otherwise,
4674 2. It is an allocated segment,
4675 3. There is an output section associated with it,
4676 4. The section has not already been allocated to a previous segment.
4677 5. PT_TLS segment includes only SHF_TLS sections.
4678 6. SHF_TLS sections are only in PT_TLS or PT_LOAD segments. */
4679 #define INCLUDE_SECTION_IN_SEGMENT(section, segment, bed) \
4680 ((((segment->p_paddr \
4681 ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \
4682 : IS_CONTAINED_BY_VMA (section, segment)) \
4683 && (section->flags & SEC_ALLOC) != 0) \
4684 || IS_COREFILE_NOTE (segment, section)) \
4685 && section->output_section != NULL \
4686 && (segment->p_type != PT_TLS \
4687 || (section->flags & SEC_THREAD_LOCAL)) \
4688 && (segment->p_type == PT_LOAD \
4689 || segment->p_type == PT_TLS \
4690 || (section->flags & SEC_THREAD_LOCAL) == 0) \
4691 && ! section->segment_mark)
4693 /* Returns TRUE iff seg1 starts after the end of seg2. */
4694 #define SEGMENT_AFTER_SEGMENT(seg1, seg2, field) \
4695 (seg1->field >= SEGMENT_END (seg2, seg2->field))
4697 /* Returns TRUE iff seg1 and seg2 overlap. Segments overlap iff both
4698 their VMA address ranges and their LMA address ranges overlap.
4699 It is possible to have overlapping VMA ranges without overlapping LMA
4700 ranges. RedBoot images for example can have both .data and .bss mapped
4701 to the same VMA range, but with the .data section mapped to a different
4703 #define SEGMENT_OVERLAPS(seg1, seg2) \
4704 ( !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_vaddr) \
4705 || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_vaddr)) \
4706 && !(SEGMENT_AFTER_SEGMENT (seg1, seg2, p_paddr) \
4707 || SEGMENT_AFTER_SEGMENT (seg2, seg1, p_paddr)))
4709 /* Initialise the segment mark field. */
4710 for (section
= ibfd
->sections
; section
!= NULL
; section
= section
->next
)
4711 section
->segment_mark
= FALSE
;
4713 /* Scan through the segments specified in the program header
4714 of the input BFD. For this first scan we look for overlaps
4715 in the loadable segments. These can be created by weird
4716 parameters to objcopy. Also, fix some solaris weirdness. */
4717 for (i
= 0, segment
= elf_tdata (ibfd
)->phdr
;
4722 Elf_Internal_Phdr
*segment2
;
4724 if (segment
->p_type
== PT_INTERP
)
4725 for (section
= ibfd
->sections
; section
; section
= section
->next
)
4726 if (IS_SOLARIS_PT_INTERP (segment
, section
))
4728 /* Mininal change so that the normal section to segment
4729 assigment code will work. */
4730 segment
->p_vaddr
= section
->vma
;
4734 if (segment
->p_type
!= PT_LOAD
)
4737 /* Determine if this segment overlaps any previous segments. */
4738 for (j
= 0, segment2
= elf_tdata (ibfd
)->phdr
; j
< i
; j
++, segment2
++)
4740 bfd_signed_vma extra_length
;
4742 if (segment2
->p_type
!= PT_LOAD
4743 || ! SEGMENT_OVERLAPS (segment
, segment2
))
4746 /* Merge the two segments together. */
4747 if (segment2
->p_vaddr
< segment
->p_vaddr
)
4749 /* Extend SEGMENT2 to include SEGMENT and then delete
4752 SEGMENT_END (segment
, segment
->p_vaddr
)
4753 - SEGMENT_END (segment2
, segment2
->p_vaddr
);
4755 if (extra_length
> 0)
4757 segment2
->p_memsz
+= extra_length
;
4758 segment2
->p_filesz
+= extra_length
;
4761 segment
->p_type
= PT_NULL
;
4763 /* Since we have deleted P we must restart the outer loop. */
4765 segment
= elf_tdata (ibfd
)->phdr
;
4770 /* Extend SEGMENT to include SEGMENT2 and then delete
4773 SEGMENT_END (segment2
, segment2
->p_vaddr
)
4774 - SEGMENT_END (segment
, segment
->p_vaddr
);
4776 if (extra_length
> 0)
4778 segment
->p_memsz
+= extra_length
;
4779 segment
->p_filesz
+= extra_length
;
4782 segment2
->p_type
= PT_NULL
;
4787 /* The second scan attempts to assign sections to segments. */
4788 for (i
= 0, segment
= elf_tdata (ibfd
)->phdr
;
4792 unsigned int section_count
;
4793 asection
** sections
;
4794 asection
* output_section
;
4796 bfd_vma matching_lma
;
4797 bfd_vma suggested_lma
;
4801 if (segment
->p_type
== PT_NULL
)
4804 /* Compute how many sections might be placed into this segment. */
4805 for (section
= ibfd
->sections
, section_count
= 0;
4807 section
= section
->next
)
4808 if (INCLUDE_SECTION_IN_SEGMENT (section
, segment
, bed
))
4811 /* Allocate a segment map big enough to contain
4812 all of the sections we have selected. */
4813 amt
= sizeof (struct elf_segment_map
);
4814 amt
+= ((bfd_size_type
) section_count
- 1) * sizeof (asection
*);
4815 map
= (struct elf_segment_map
*) bfd_alloc (obfd
, amt
);
4819 /* Initialise the fields of the segment map. Default to
4820 using the physical address of the segment in the input BFD. */
4822 map
->p_type
= segment
->p_type
;
4823 map
->p_flags
= segment
->p_flags
;
4824 map
->p_flags_valid
= 1;
4825 map
->p_paddr
= segment
->p_paddr
;
4826 map
->p_paddr_valid
= 1;
4828 /* Determine if this segment contains the ELF file header
4829 and if it contains the program headers themselves. */
4830 map
->includes_filehdr
= (segment
->p_offset
== 0
4831 && segment
->p_filesz
>= iehdr
->e_ehsize
);
4833 map
->includes_phdrs
= 0;
4835 if (! phdr_included
|| segment
->p_type
!= PT_LOAD
)
4837 map
->includes_phdrs
=
4838 (segment
->p_offset
<= (bfd_vma
) iehdr
->e_phoff
4839 && (segment
->p_offset
+ segment
->p_filesz
4840 >= ((bfd_vma
) iehdr
->e_phoff
4841 + iehdr
->e_phnum
* iehdr
->e_phentsize
)));
4843 if (segment
->p_type
== PT_LOAD
&& map
->includes_phdrs
)
4844 phdr_included
= TRUE
;
4847 if (section_count
== 0)
4849 /* Special segments, such as the PT_PHDR segment, may contain
4850 no sections, but ordinary, loadable segments should contain
4851 something. They are allowed by the ELF spec however, so only
4852 a warning is produced. */
4853 if (segment
->p_type
== PT_LOAD
)
4854 (*_bfd_error_handler
)
4855 (_("%s: warning: Empty loadable segment detected, is this intentional ?\n"),
4856 bfd_archive_filename (ibfd
));
4859 *pointer_to_map
= map
;
4860 pointer_to_map
= &map
->next
;
4865 /* Now scan the sections in the input BFD again and attempt
4866 to add their corresponding output sections to the segment map.
4867 The problem here is how to handle an output section which has
4868 been moved (ie had its LMA changed). There are four possibilities:
4870 1. None of the sections have been moved.
4871 In this case we can continue to use the segment LMA from the
4874 2. All of the sections have been moved by the same amount.
4875 In this case we can change the segment's LMA to match the LMA
4876 of the first section.
4878 3. Some of the sections have been moved, others have not.
4879 In this case those sections which have not been moved can be
4880 placed in the current segment which will have to have its size,
4881 and possibly its LMA changed, and a new segment or segments will
4882 have to be created to contain the other sections.
4884 4. The sections have been moved, but not by the same amount.
4885 In this case we can change the segment's LMA to match the LMA
4886 of the first section and we will have to create a new segment
4887 or segments to contain the other sections.
4889 In order to save time, we allocate an array to hold the section
4890 pointers that we are interested in. As these sections get assigned
4891 to a segment, they are removed from this array. */
4893 /* Gcc 2.96 miscompiles this code on mips. Don't do casting here
4894 to work around this long long bug. */
4895 amt
= section_count
* sizeof (asection
*);
4896 sections
= (asection
**) bfd_malloc (amt
);
4897 if (sections
== NULL
)
4900 /* Step One: Scan for segment vs section LMA conflicts.
4901 Also add the sections to the section array allocated above.
4902 Also add the sections to the current segment. In the common
4903 case, where the sections have not been moved, this means that
4904 we have completely filled the segment, and there is nothing
4910 for (j
= 0, section
= ibfd
->sections
;
4912 section
= section
->next
)
4914 if (INCLUDE_SECTION_IN_SEGMENT (section
, segment
, bed
))
4916 output_section
= section
->output_section
;
4918 sections
[j
++] = section
;
4920 /* The Solaris native linker always sets p_paddr to 0.
4921 We try to catch that case here, and set it to the
4922 correct value. Note - some backends require that
4923 p_paddr be left as zero. */
4924 if (segment
->p_paddr
== 0
4925 && segment
->p_vaddr
!= 0
4926 && (! bed
->want_p_paddr_set_to_zero
)
4928 && output_section
->lma
!= 0
4929 && (output_section
->vma
== (segment
->p_vaddr
4930 + (map
->includes_filehdr
4933 + (map
->includes_phdrs
4935 * iehdr
->e_phentsize
)
4937 map
->p_paddr
= segment
->p_vaddr
;
4939 /* Match up the physical address of the segment with the
4940 LMA address of the output section. */
4941 if (IS_CONTAINED_BY_LMA (output_section
, segment
, map
->p_paddr
)
4942 || IS_COREFILE_NOTE (segment
, section
)
4943 || (bed
->want_p_paddr_set_to_zero
&&
4944 IS_CONTAINED_BY_VMA (output_section
, segment
))
4947 if (matching_lma
== 0)
4948 matching_lma
= output_section
->lma
;
4950 /* We assume that if the section fits within the segment
4951 then it does not overlap any other section within that
4953 map
->sections
[isec
++] = output_section
;
4955 else if (suggested_lma
== 0)
4956 suggested_lma
= output_section
->lma
;
4960 BFD_ASSERT (j
== section_count
);
4962 /* Step Two: Adjust the physical address of the current segment,
4964 if (isec
== section_count
)
4966 /* All of the sections fitted within the segment as currently
4967 specified. This is the default case. Add the segment to
4968 the list of built segments and carry on to process the next
4969 program header in the input BFD. */
4970 map
->count
= section_count
;
4971 *pointer_to_map
= map
;
4972 pointer_to_map
= &map
->next
;
4979 if (matching_lma
!= 0)
4981 /* At least one section fits inside the current segment.
4982 Keep it, but modify its physical address to match the
4983 LMA of the first section that fitted. */
4984 map
->p_paddr
= matching_lma
;
4988 /* None of the sections fitted inside the current segment.
4989 Change the current segment's physical address to match
4990 the LMA of the first section. */
4991 map
->p_paddr
= suggested_lma
;
4994 /* Offset the segment physical address from the lma
4995 to allow for space taken up by elf headers. */
4996 if (map
->includes_filehdr
)
4997 map
->p_paddr
-= iehdr
->e_ehsize
;
4999 if (map
->includes_phdrs
)
5001 map
->p_paddr
-= iehdr
->e_phnum
* iehdr
->e_phentsize
;
5003 /* iehdr->e_phnum is just an estimate of the number
5004 of program headers that we will need. Make a note
5005 here of the number we used and the segment we chose
5006 to hold these headers, so that we can adjust the
5007 offset when we know the correct value. */
5008 phdr_adjust_num
= iehdr
->e_phnum
;
5009 phdr_adjust_seg
= map
;
5013 /* Step Three: Loop over the sections again, this time assigning
5014 those that fit to the current segment and removing them from the
5015 sections array; but making sure not to leave large gaps. Once all
5016 possible sections have been assigned to the current segment it is
5017 added to the list of built segments and if sections still remain
5018 to be assigned, a new segment is constructed before repeating
5026 /* Fill the current segment with sections that fit. */
5027 for (j
= 0; j
< section_count
; j
++)
5029 section
= sections
[j
];
5031 if (section
== NULL
)
5034 output_section
= section
->output_section
;
5036 BFD_ASSERT (output_section
!= NULL
);
5038 if (IS_CONTAINED_BY_LMA (output_section
, segment
, map
->p_paddr
)
5039 || IS_COREFILE_NOTE (segment
, section
))
5041 if (map
->count
== 0)
5043 /* If the first section in a segment does not start at
5044 the beginning of the segment, then something is
5046 if (output_section
->lma
!=
5048 + (map
->includes_filehdr
? iehdr
->e_ehsize
: 0)
5049 + (map
->includes_phdrs
5050 ? iehdr
->e_phnum
* iehdr
->e_phentsize
5056 asection
* prev_sec
;
5058 prev_sec
= map
->sections
[map
->count
- 1];
5060 /* If the gap between the end of the previous section
5061 and the start of this section is more than
5062 maxpagesize then we need to start a new segment. */
5063 if ((BFD_ALIGN (prev_sec
->lma
+ prev_sec
->_raw_size
,
5065 < BFD_ALIGN (output_section
->lma
, maxpagesize
))
5066 || ((prev_sec
->lma
+ prev_sec
->_raw_size
)
5067 > output_section
->lma
))
5069 if (suggested_lma
== 0)
5070 suggested_lma
= output_section
->lma
;
5076 map
->sections
[map
->count
++] = output_section
;
5079 section
->segment_mark
= TRUE
;
5081 else if (suggested_lma
== 0)
5082 suggested_lma
= output_section
->lma
;
5085 BFD_ASSERT (map
->count
> 0);
5087 /* Add the current segment to the list of built segments. */
5088 *pointer_to_map
= map
;
5089 pointer_to_map
= &map
->next
;
5091 if (isec
< section_count
)
5093 /* We still have not allocated all of the sections to
5094 segments. Create a new segment here, initialise it
5095 and carry on looping. */
5096 amt
= sizeof (struct elf_segment_map
);
5097 amt
+= ((bfd_size_type
) section_count
- 1) * sizeof (asection
*);
5098 map
= (struct elf_segment_map
*) bfd_alloc (obfd
, amt
);
5105 /* Initialise the fields of the segment map. Set the physical
5106 physical address to the LMA of the first section that has
5107 not yet been assigned. */
5109 map
->p_type
= segment
->p_type
;
5110 map
->p_flags
= segment
->p_flags
;
5111 map
->p_flags_valid
= 1;
5112 map
->p_paddr
= suggested_lma
;
5113 map
->p_paddr_valid
= 1;
5114 map
->includes_filehdr
= 0;
5115 map
->includes_phdrs
= 0;
5118 while (isec
< section_count
);
5123 /* The Solaris linker creates program headers in which all the
5124 p_paddr fields are zero. When we try to objcopy or strip such a
5125 file, we get confused. Check for this case, and if we find it
5126 reset the p_paddr_valid fields. */
5127 for (map
= map_first
; map
!= NULL
; map
= map
->next
)
5128 if (map
->p_paddr
!= 0)
5131 for (map
= map_first
; map
!= NULL
; map
= map
->next
)
5132 map
->p_paddr_valid
= 0;
5134 elf_tdata (obfd
)->segment_map
= map_first
;
5136 /* If we had to estimate the number of program headers that were
5137 going to be needed, then check our estimate now and adjust
5138 the offset if necessary. */
5139 if (phdr_adjust_seg
!= NULL
)
5143 for (count
= 0, map
= map_first
; map
!= NULL
; map
= map
->next
)
5146 if (count
> phdr_adjust_num
)
5147 phdr_adjust_seg
->p_paddr
5148 -= (count
- phdr_adjust_num
) * iehdr
->e_phentsize
;
5152 /* Final Step: Sort the segments into ascending order of physical
5154 if (map_first
!= NULL
)
5156 struct elf_segment_map
*prev
;
5159 for (map
= map_first
->next
; map
!= NULL
; prev
= map
, map
= map
->next
)
5161 /* Yes I know - its a bubble sort.... */
5162 if (map
->next
!= NULL
&& (map
->next
->p_paddr
< map
->p_paddr
))
5164 /* Swap map and map->next. */
5165 prev
->next
= map
->next
;
5166 map
->next
= map
->next
->next
;
5167 prev
->next
->next
= map
;
5178 #undef IS_CONTAINED_BY_VMA
5179 #undef IS_CONTAINED_BY_LMA
5180 #undef IS_COREFILE_NOTE
5181 #undef IS_SOLARIS_PT_INTERP
5182 #undef INCLUDE_SECTION_IN_SEGMENT
5183 #undef SEGMENT_AFTER_SEGMENT
5184 #undef SEGMENT_OVERLAPS
5188 /* Copy private section information. This copies over the entsize
5189 field, and sometimes the info field. */
5192 _bfd_elf_copy_private_section_data (ibfd
, isec
, obfd
, osec
)
5198 Elf_Internal_Shdr
*ihdr
, *ohdr
;
5200 if (ibfd
->xvec
->flavour
!= bfd_target_elf_flavour
5201 || obfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
5204 if (elf_tdata (obfd
)->segment_map
== NULL
&& elf_tdata (ibfd
)->phdr
!= NULL
)
5208 /* Only set up the segments if there are no more SEC_ALLOC
5209 sections. FIXME: This won't do the right thing if objcopy is
5210 used to remove the last SEC_ALLOC section, since objcopy
5211 won't call this routine in that case. */
5212 for (s
= isec
->next
; s
!= NULL
; s
= s
->next
)
5213 if ((s
->flags
& SEC_ALLOC
) != 0)
5217 if (! copy_private_bfd_data (ibfd
, obfd
))
5222 ihdr
= &elf_section_data (isec
)->this_hdr
;
5223 ohdr
= &elf_section_data (osec
)->this_hdr
;
5225 ohdr
->sh_entsize
= ihdr
->sh_entsize
;
5227 if (ihdr
->sh_type
== SHT_SYMTAB
5228 || ihdr
->sh_type
== SHT_DYNSYM
5229 || ihdr
->sh_type
== SHT_GNU_verneed
5230 || ihdr
->sh_type
== SHT_GNU_verdef
)
5231 ohdr
->sh_info
= ihdr
->sh_info
;
5233 /* Set things up for objcopy. The output SHT_GROUP section will
5234 have its elf_next_in_group pointing back to the input group
5236 elf_next_in_group (osec
) = elf_next_in_group (isec
);
5237 elf_group_name (osec
) = elf_group_name (isec
);
5239 osec
->use_rela_p
= isec
->use_rela_p
;
5244 /* Copy private symbol information. If this symbol is in a section
5245 which we did not map into a BFD section, try to map the section
5246 index correctly. We use special macro definitions for the mapped
5247 section indices; these definitions are interpreted by the
5248 swap_out_syms function. */
5250 #define MAP_ONESYMTAB (SHN_HIOS + 1)
5251 #define MAP_DYNSYMTAB (SHN_HIOS + 2)
5252 #define MAP_STRTAB (SHN_HIOS + 3)
5253 #define MAP_SHSTRTAB (SHN_HIOS + 4)
5254 #define MAP_SYM_SHNDX (SHN_HIOS + 5)
5257 _bfd_elf_copy_private_symbol_data (ibfd
, isymarg
, obfd
, osymarg
)
5263 elf_symbol_type
*isym
, *osym
;
5265 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
5266 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
5269 isym
= elf_symbol_from (ibfd
, isymarg
);
5270 osym
= elf_symbol_from (obfd
, osymarg
);
5274 && bfd_is_abs_section (isym
->symbol
.section
))
5278 shndx
= isym
->internal_elf_sym
.st_shndx
;
5279 if (shndx
== elf_onesymtab (ibfd
))
5280 shndx
= MAP_ONESYMTAB
;
5281 else if (shndx
== elf_dynsymtab (ibfd
))
5282 shndx
= MAP_DYNSYMTAB
;
5283 else if (shndx
== elf_tdata (ibfd
)->strtab_section
)
5285 else if (shndx
== elf_tdata (ibfd
)->shstrtab_section
)
5286 shndx
= MAP_SHSTRTAB
;
5287 else if (shndx
== elf_tdata (ibfd
)->symtab_shndx_section
)
5288 shndx
= MAP_SYM_SHNDX
;
5289 osym
->internal_elf_sym
.st_shndx
= shndx
;
5295 /* Swap out the symbols. */
5298 swap_out_syms (abfd
, sttp
, relocatable_p
)
5300 struct bfd_strtab_hash
**sttp
;
5303 struct elf_backend_data
*bed
;
5306 struct bfd_strtab_hash
*stt
;
5307 Elf_Internal_Shdr
*symtab_hdr
;
5308 Elf_Internal_Shdr
*symtab_shndx_hdr
;
5309 Elf_Internal_Shdr
*symstrtab_hdr
;
5310 char *outbound_syms
;
5311 char *outbound_shndx
;
5315 if (!elf_map_symbols (abfd
))
5318 /* Dump out the symtabs. */
5319 stt
= _bfd_elf_stringtab_init ();
5323 bed
= get_elf_backend_data (abfd
);
5324 symcount
= bfd_get_symcount (abfd
);
5325 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
5326 symtab_hdr
->sh_type
= SHT_SYMTAB
;
5327 symtab_hdr
->sh_entsize
= bed
->s
->sizeof_sym
;
5328 symtab_hdr
->sh_size
= symtab_hdr
->sh_entsize
* (symcount
+ 1);
5329 symtab_hdr
->sh_info
= elf_num_locals (abfd
) + 1;
5330 symtab_hdr
->sh_addralign
= 1 << bed
->s
->log_file_align
;
5332 symstrtab_hdr
= &elf_tdata (abfd
)->strtab_hdr
;
5333 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
5335 amt
= (bfd_size_type
) (1 + symcount
) * bed
->s
->sizeof_sym
;
5336 outbound_syms
= bfd_alloc (abfd
, amt
);
5337 if (outbound_syms
== NULL
)
5339 _bfd_stringtab_free (stt
);
5342 symtab_hdr
->contents
= (PTR
) outbound_syms
;
5344 outbound_shndx
= NULL
;
5345 symtab_shndx_hdr
= &elf_tdata (abfd
)->symtab_shndx_hdr
;
5346 if (symtab_shndx_hdr
->sh_name
!= 0)
5348 amt
= (bfd_size_type
) (1 + symcount
) * sizeof (Elf_External_Sym_Shndx
);
5349 outbound_shndx
= bfd_zalloc (abfd
, amt
);
5350 if (outbound_shndx
== NULL
)
5352 _bfd_stringtab_free (stt
);
5356 symtab_shndx_hdr
->contents
= outbound_shndx
;
5357 symtab_shndx_hdr
->sh_type
= SHT_SYMTAB_SHNDX
;
5358 symtab_shndx_hdr
->sh_size
= amt
;
5359 symtab_shndx_hdr
->sh_addralign
= sizeof (Elf_External_Sym_Shndx
);
5360 symtab_shndx_hdr
->sh_entsize
= sizeof (Elf_External_Sym_Shndx
);
5363 /* Now generate the data (for "contents"). */
5365 /* Fill in zeroth symbol and swap it out. */
5366 Elf_Internal_Sym sym
;
5372 sym
.st_shndx
= SHN_UNDEF
;
5373 bed
->s
->swap_symbol_out (abfd
, &sym
, outbound_syms
, outbound_shndx
);
5374 outbound_syms
+= bed
->s
->sizeof_sym
;
5375 if (outbound_shndx
!= NULL
)
5376 outbound_shndx
+= sizeof (Elf_External_Sym_Shndx
);
5379 syms
= bfd_get_outsymbols (abfd
);
5380 for (idx
= 0; idx
< symcount
; idx
++)
5382 Elf_Internal_Sym sym
;
5383 bfd_vma value
= syms
[idx
]->value
;
5384 elf_symbol_type
*type_ptr
;
5385 flagword flags
= syms
[idx
]->flags
;
5388 if ((flags
& (BSF_SECTION_SYM
| BSF_GLOBAL
)) == BSF_SECTION_SYM
)
5390 /* Local section symbols have no name. */
5395 sym
.st_name
= (unsigned long) _bfd_stringtab_add (stt
,
5398 if (sym
.st_name
== (unsigned long) -1)
5400 _bfd_stringtab_free (stt
);
5405 type_ptr
= elf_symbol_from (abfd
, syms
[idx
]);
5407 if ((flags
& BSF_SECTION_SYM
) == 0
5408 && bfd_is_com_section (syms
[idx
]->section
))
5410 /* ELF common symbols put the alignment into the `value' field,
5411 and the size into the `size' field. This is backwards from
5412 how BFD handles it, so reverse it here. */
5413 sym
.st_size
= value
;
5414 if (type_ptr
== NULL
5415 || type_ptr
->internal_elf_sym
.st_value
== 0)
5416 sym
.st_value
= value
>= 16 ? 16 : (1 << bfd_log2 (value
));
5418 sym
.st_value
= type_ptr
->internal_elf_sym
.st_value
;
5419 sym
.st_shndx
= _bfd_elf_section_from_bfd_section
5420 (abfd
, syms
[idx
]->section
);
5424 asection
*sec
= syms
[idx
]->section
;
5427 if (sec
->output_section
)
5429 value
+= sec
->output_offset
;
5430 sec
= sec
->output_section
;
5433 /* Don't add in the section vma for relocatable output. */
5434 if (! relocatable_p
)
5436 sym
.st_value
= value
;
5437 sym
.st_size
= type_ptr
? type_ptr
->internal_elf_sym
.st_size
: 0;
5439 if (bfd_is_abs_section (sec
)
5441 && type_ptr
->internal_elf_sym
.st_shndx
!= 0)
5443 /* This symbol is in a real ELF section which we did
5444 not create as a BFD section. Undo the mapping done
5445 by copy_private_symbol_data. */
5446 shndx
= type_ptr
->internal_elf_sym
.st_shndx
;
5450 shndx
= elf_onesymtab (abfd
);
5453 shndx
= elf_dynsymtab (abfd
);
5456 shndx
= elf_tdata (abfd
)->strtab_section
;
5459 shndx
= elf_tdata (abfd
)->shstrtab_section
;
5462 shndx
= elf_tdata (abfd
)->symtab_shndx_section
;
5470 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
5476 /* Writing this would be a hell of a lot easier if
5477 we had some decent documentation on bfd, and
5478 knew what to expect of the library, and what to
5479 demand of applications. For example, it
5480 appears that `objcopy' might not set the
5481 section of a symbol to be a section that is
5482 actually in the output file. */
5483 sec2
= bfd_get_section_by_name (abfd
, sec
->name
);
5486 _bfd_error_handler (_("\
5487 Unable to find equivalent output section for symbol '%s' from section '%s'"),
5488 syms
[idx
]->name
? syms
[idx
]->name
: "<Local sym>",
5490 bfd_set_error (bfd_error_invalid_operation
);
5491 _bfd_stringtab_free (stt
);
5495 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec2
);
5496 BFD_ASSERT (shndx
!= -1);
5500 sym
.st_shndx
= shndx
;
5503 if ((flags
& BSF_THREAD_LOCAL
) != 0)
5505 else if ((flags
& BSF_FUNCTION
) != 0)
5507 else if ((flags
& BSF_OBJECT
) != 0)
5512 if (syms
[idx
]->section
->flags
& SEC_THREAD_LOCAL
)
5515 /* Processor-specific types. */
5516 if (type_ptr
!= NULL
5517 && bed
->elf_backend_get_symbol_type
)
5518 type
= ((*bed
->elf_backend_get_symbol_type
)
5519 (&type_ptr
->internal_elf_sym
, type
));
5521 if (flags
& BSF_SECTION_SYM
)
5523 if (flags
& BSF_GLOBAL
)
5524 sym
.st_info
= ELF_ST_INFO (STB_GLOBAL
, STT_SECTION
);
5526 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_SECTION
);
5528 else if (bfd_is_com_section (syms
[idx
]->section
))
5529 sym
.st_info
= ELF_ST_INFO (STB_GLOBAL
, type
);
5530 else if (bfd_is_und_section (syms
[idx
]->section
))
5531 sym
.st_info
= ELF_ST_INFO (((flags
& BSF_WEAK
)
5535 else if (flags
& BSF_FILE
)
5536 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_FILE
);
5539 int bind
= STB_LOCAL
;
5541 if (flags
& BSF_LOCAL
)
5543 else if (flags
& BSF_WEAK
)
5545 else if (flags
& BSF_GLOBAL
)
5548 sym
.st_info
= ELF_ST_INFO (bind
, type
);
5551 if (type_ptr
!= NULL
)
5552 sym
.st_other
= type_ptr
->internal_elf_sym
.st_other
;
5556 bed
->s
->swap_symbol_out (abfd
, &sym
, outbound_syms
, outbound_shndx
);
5557 outbound_syms
+= bed
->s
->sizeof_sym
;
5558 if (outbound_shndx
!= NULL
)
5559 outbound_shndx
+= sizeof (Elf_External_Sym_Shndx
);
5563 symstrtab_hdr
->sh_size
= _bfd_stringtab_size (stt
);
5564 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
5566 symstrtab_hdr
->sh_flags
= 0;
5567 symstrtab_hdr
->sh_addr
= 0;
5568 symstrtab_hdr
->sh_entsize
= 0;
5569 symstrtab_hdr
->sh_link
= 0;
5570 symstrtab_hdr
->sh_info
= 0;
5571 symstrtab_hdr
->sh_addralign
= 1;
5576 /* Return the number of bytes required to hold the symtab vector.
5578 Note that we base it on the count plus 1, since we will null terminate
5579 the vector allocated based on this size. However, the ELF symbol table
5580 always has a dummy entry as symbol #0, so it ends up even. */
5583 _bfd_elf_get_symtab_upper_bound (abfd
)
5588 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->symtab_hdr
;
5590 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
5591 symtab_size
= (symcount
+ 1) * (sizeof (asymbol
*));
5593 symtab_size
-= sizeof (asymbol
*);
5599 _bfd_elf_get_dynamic_symtab_upper_bound (abfd
)
5604 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->dynsymtab_hdr
;
5606 if (elf_dynsymtab (abfd
) == 0)
5608 bfd_set_error (bfd_error_invalid_operation
);
5612 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
5613 symtab_size
= (symcount
+ 1) * (sizeof (asymbol
*));
5615 symtab_size
-= sizeof (asymbol
*);
5621 _bfd_elf_get_reloc_upper_bound (abfd
, asect
)
5622 bfd
*abfd ATTRIBUTE_UNUSED
;
5625 return (asect
->reloc_count
+ 1) * sizeof (arelent
*);
5628 /* Canonicalize the relocs. */
5631 _bfd_elf_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
5639 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
5641 if (! bed
->s
->slurp_reloc_table (abfd
, section
, symbols
, FALSE
))
5644 tblptr
= section
->relocation
;
5645 for (i
= 0; i
< section
->reloc_count
; i
++)
5646 *relptr
++ = tblptr
++;
5650 return section
->reloc_count
;
5654 _bfd_elf_get_symtab (abfd
, alocation
)
5656 asymbol
**alocation
;
5658 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
5659 long symcount
= bed
->s
->slurp_symbol_table (abfd
, alocation
, FALSE
);
5662 bfd_get_symcount (abfd
) = symcount
;
5667 _bfd_elf_canonicalize_dynamic_symtab (abfd
, alocation
)
5669 asymbol
**alocation
;
5671 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
5672 long symcount
= bed
->s
->slurp_symbol_table (abfd
, alocation
, TRUE
);
5675 bfd_get_dynamic_symcount (abfd
) = symcount
;
5679 /* Return the size required for the dynamic reloc entries. Any
5680 section that was actually installed in the BFD, and has type
5681 SHT_REL or SHT_RELA, and uses the dynamic symbol table, is
5682 considered to be a dynamic reloc section. */
5685 _bfd_elf_get_dynamic_reloc_upper_bound (abfd
)
5691 if (elf_dynsymtab (abfd
) == 0)
5693 bfd_set_error (bfd_error_invalid_operation
);
5697 ret
= sizeof (arelent
*);
5698 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
5699 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
5700 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_REL
5701 || elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
5702 ret
+= ((s
->_raw_size
/ elf_section_data (s
)->this_hdr
.sh_entsize
)
5703 * sizeof (arelent
*));
5708 /* Canonicalize the dynamic relocation entries. Note that we return
5709 the dynamic relocations as a single block, although they are
5710 actually associated with particular sections; the interface, which
5711 was designed for SunOS style shared libraries, expects that there
5712 is only one set of dynamic relocs. Any section that was actually
5713 installed in the BFD, and has type SHT_REL or SHT_RELA, and uses
5714 the dynamic symbol table, is considered to be a dynamic reloc
5718 _bfd_elf_canonicalize_dynamic_reloc (abfd
, storage
, syms
)
5723 bfd_boolean (*slurp_relocs
)
5724 PARAMS ((bfd
*, asection
*, asymbol
**, bfd_boolean
));
5728 if (elf_dynsymtab (abfd
) == 0)
5730 bfd_set_error (bfd_error_invalid_operation
);
5734 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
5736 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
5738 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
5739 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_REL
5740 || elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
5745 if (! (*slurp_relocs
) (abfd
, s
, syms
, TRUE
))
5747 count
= s
->_raw_size
/ elf_section_data (s
)->this_hdr
.sh_entsize
;
5749 for (i
= 0; i
< count
; i
++)
5760 /* Read in the version information. */
5763 _bfd_elf_slurp_version_tables (abfd
)
5766 bfd_byte
*contents
= NULL
;
5769 if (elf_dynverdef (abfd
) != 0)
5771 Elf_Internal_Shdr
*hdr
;
5772 Elf_External_Verdef
*everdef
;
5773 Elf_Internal_Verdef
*iverdef
;
5774 Elf_Internal_Verdef
*iverdefarr
;
5775 Elf_Internal_Verdef iverdefmem
;
5777 unsigned int maxidx
;
5779 hdr
= &elf_tdata (abfd
)->dynverdef_hdr
;
5781 contents
= (bfd_byte
*) bfd_malloc (hdr
->sh_size
);
5782 if (contents
== NULL
)
5784 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
5785 || bfd_bread ((PTR
) contents
, hdr
->sh_size
, abfd
) != hdr
->sh_size
)
5788 /* We know the number of entries in the section but not the maximum
5789 index. Therefore we have to run through all entries and find
5791 everdef
= (Elf_External_Verdef
*) contents
;
5793 for (i
= 0; i
< hdr
->sh_info
; ++i
)
5795 _bfd_elf_swap_verdef_in (abfd
, everdef
, &iverdefmem
);
5797 if ((iverdefmem
.vd_ndx
& ((unsigned) VERSYM_VERSION
)) > maxidx
)
5798 maxidx
= iverdefmem
.vd_ndx
& ((unsigned) VERSYM_VERSION
);
5800 everdef
= ((Elf_External_Verdef
*)
5801 ((bfd_byte
*) everdef
+ iverdefmem
.vd_next
));
5804 amt
= (bfd_size_type
) maxidx
* sizeof (Elf_Internal_Verdef
);
5805 elf_tdata (abfd
)->verdef
= (Elf_Internal_Verdef
*) bfd_zalloc (abfd
, amt
);
5806 if (elf_tdata (abfd
)->verdef
== NULL
)
5809 elf_tdata (abfd
)->cverdefs
= maxidx
;
5811 everdef
= (Elf_External_Verdef
*) contents
;
5812 iverdefarr
= elf_tdata (abfd
)->verdef
;
5813 for (i
= 0; i
< hdr
->sh_info
; i
++)
5815 Elf_External_Verdaux
*everdaux
;
5816 Elf_Internal_Verdaux
*iverdaux
;
5819 _bfd_elf_swap_verdef_in (abfd
, everdef
, &iverdefmem
);
5821 iverdef
= &iverdefarr
[(iverdefmem
.vd_ndx
& VERSYM_VERSION
) - 1];
5822 memcpy (iverdef
, &iverdefmem
, sizeof (Elf_Internal_Verdef
));
5824 iverdef
->vd_bfd
= abfd
;
5826 amt
= (bfd_size_type
) iverdef
->vd_cnt
* sizeof (Elf_Internal_Verdaux
);
5827 iverdef
->vd_auxptr
= (Elf_Internal_Verdaux
*) bfd_alloc (abfd
, amt
);
5828 if (iverdef
->vd_auxptr
== NULL
)
5831 everdaux
= ((Elf_External_Verdaux
*)
5832 ((bfd_byte
*) everdef
+ iverdef
->vd_aux
));
5833 iverdaux
= iverdef
->vd_auxptr
;
5834 for (j
= 0; j
< iverdef
->vd_cnt
; j
++, iverdaux
++)
5836 _bfd_elf_swap_verdaux_in (abfd
, everdaux
, iverdaux
);
5838 iverdaux
->vda_nodename
=
5839 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
5840 iverdaux
->vda_name
);
5841 if (iverdaux
->vda_nodename
== NULL
)
5844 if (j
+ 1 < iverdef
->vd_cnt
)
5845 iverdaux
->vda_nextptr
= iverdaux
+ 1;
5847 iverdaux
->vda_nextptr
= NULL
;
5849 everdaux
= ((Elf_External_Verdaux
*)
5850 ((bfd_byte
*) everdaux
+ iverdaux
->vda_next
));
5853 iverdef
->vd_nodename
= iverdef
->vd_auxptr
->vda_nodename
;
5855 if (i
+ 1 < hdr
->sh_info
)
5856 iverdef
->vd_nextdef
= iverdef
+ 1;
5858 iverdef
->vd_nextdef
= NULL
;
5860 everdef
= ((Elf_External_Verdef
*)
5861 ((bfd_byte
*) everdef
+ iverdef
->vd_next
));
5868 if (elf_dynverref (abfd
) != 0)
5870 Elf_Internal_Shdr
*hdr
;
5871 Elf_External_Verneed
*everneed
;
5872 Elf_Internal_Verneed
*iverneed
;
5875 hdr
= &elf_tdata (abfd
)->dynverref_hdr
;
5877 amt
= (bfd_size_type
) hdr
->sh_info
* sizeof (Elf_Internal_Verneed
);
5878 elf_tdata (abfd
)->verref
=
5879 (Elf_Internal_Verneed
*) bfd_zalloc (abfd
, amt
);
5880 if (elf_tdata (abfd
)->verref
== NULL
)
5883 elf_tdata (abfd
)->cverrefs
= hdr
->sh_info
;
5885 contents
= (bfd_byte
*) bfd_malloc (hdr
->sh_size
);
5886 if (contents
== NULL
)
5888 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
5889 || bfd_bread ((PTR
) contents
, hdr
->sh_size
, abfd
) != hdr
->sh_size
)
5892 everneed
= (Elf_External_Verneed
*) contents
;
5893 iverneed
= elf_tdata (abfd
)->verref
;
5894 for (i
= 0; i
< hdr
->sh_info
; i
++, iverneed
++)
5896 Elf_External_Vernaux
*evernaux
;
5897 Elf_Internal_Vernaux
*ivernaux
;
5900 _bfd_elf_swap_verneed_in (abfd
, everneed
, iverneed
);
5902 iverneed
->vn_bfd
= abfd
;
5904 iverneed
->vn_filename
=
5905 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
5907 if (iverneed
->vn_filename
== NULL
)
5910 amt
= iverneed
->vn_cnt
;
5911 amt
*= sizeof (Elf_Internal_Vernaux
);
5912 iverneed
->vn_auxptr
= (Elf_Internal_Vernaux
*) bfd_alloc (abfd
, amt
);
5914 evernaux
= ((Elf_External_Vernaux
*)
5915 ((bfd_byte
*) everneed
+ iverneed
->vn_aux
));
5916 ivernaux
= iverneed
->vn_auxptr
;
5917 for (j
= 0; j
< iverneed
->vn_cnt
; j
++, ivernaux
++)
5919 _bfd_elf_swap_vernaux_in (abfd
, evernaux
, ivernaux
);
5921 ivernaux
->vna_nodename
=
5922 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
5923 ivernaux
->vna_name
);
5924 if (ivernaux
->vna_nodename
== NULL
)
5927 if (j
+ 1 < iverneed
->vn_cnt
)
5928 ivernaux
->vna_nextptr
= ivernaux
+ 1;
5930 ivernaux
->vna_nextptr
= NULL
;
5932 evernaux
= ((Elf_External_Vernaux
*)
5933 ((bfd_byte
*) evernaux
+ ivernaux
->vna_next
));
5936 if (i
+ 1 < hdr
->sh_info
)
5937 iverneed
->vn_nextref
= iverneed
+ 1;
5939 iverneed
->vn_nextref
= NULL
;
5941 everneed
= ((Elf_External_Verneed
*)
5942 ((bfd_byte
*) everneed
+ iverneed
->vn_next
));
5952 if (contents
!= NULL
)
5958 _bfd_elf_make_empty_symbol (abfd
)
5961 elf_symbol_type
*newsym
;
5962 bfd_size_type amt
= sizeof (elf_symbol_type
);
5964 newsym
= (elf_symbol_type
*) bfd_zalloc (abfd
, amt
);
5969 newsym
->symbol
.the_bfd
= abfd
;
5970 return &newsym
->symbol
;
5975 _bfd_elf_get_symbol_info (ignore_abfd
, symbol
, ret
)
5976 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
5980 bfd_symbol_info (symbol
, ret
);
5983 /* Return whether a symbol name implies a local symbol. Most targets
5984 use this function for the is_local_label_name entry point, but some
5988 _bfd_elf_is_local_label_name (abfd
, name
)
5989 bfd
*abfd ATTRIBUTE_UNUSED
;
5992 /* Normal local symbols start with ``.L''. */
5993 if (name
[0] == '.' && name
[1] == 'L')
5996 /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate
5997 DWARF debugging symbols starting with ``..''. */
5998 if (name
[0] == '.' && name
[1] == '.')
6001 /* gcc will sometimes generate symbols beginning with ``_.L_'' when
6002 emitting DWARF debugging output. I suspect this is actually a
6003 small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call
6004 ASM_GENERATE_INTERNAL_LABEL, and this causes the leading
6005 underscore to be emitted on some ELF targets). For ease of use,
6006 we treat such symbols as local. */
6007 if (name
[0] == '_' && name
[1] == '.' && name
[2] == 'L' && name
[3] == '_')
6014 _bfd_elf_get_lineno (ignore_abfd
, symbol
)
6015 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
6016 asymbol
*symbol ATTRIBUTE_UNUSED
;
6023 _bfd_elf_set_arch_mach (abfd
, arch
, machine
)
6025 enum bfd_architecture arch
;
6026 unsigned long machine
;
6028 /* If this isn't the right architecture for this backend, and this
6029 isn't the generic backend, fail. */
6030 if (arch
!= get_elf_backend_data (abfd
)->arch
6031 && arch
!= bfd_arch_unknown
6032 && get_elf_backend_data (abfd
)->arch
!= bfd_arch_unknown
)
6035 return bfd_default_set_arch_mach (abfd
, arch
, machine
);
6038 /* Find the function to a particular section and offset,
6039 for error reporting. */
6042 elf_find_function (abfd
, section
, symbols
, offset
,
6043 filename_ptr
, functionname_ptr
)
6044 bfd
*abfd ATTRIBUTE_UNUSED
;
6048 const char **filename_ptr
;
6049 const char **functionname_ptr
;
6051 const char *filename
;
6060 for (p
= symbols
; *p
!= NULL
; p
++)
6064 q
= (elf_symbol_type
*) *p
;
6066 if (bfd_get_section (&q
->symbol
) != section
)
6069 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
6074 filename
= bfd_asymbol_name (&q
->symbol
);
6078 if (q
->symbol
.section
== section
6079 && q
->symbol
.value
>= low_func
6080 && q
->symbol
.value
<= offset
)
6082 func
= (asymbol
*) q
;
6083 low_func
= q
->symbol
.value
;
6093 *filename_ptr
= filename
;
6094 if (functionname_ptr
)
6095 *functionname_ptr
= bfd_asymbol_name (func
);
6100 /* Find the nearest line to a particular section and offset,
6101 for error reporting. */
6104 _bfd_elf_find_nearest_line (abfd
, section
, symbols
, offset
,
6105 filename_ptr
, functionname_ptr
, line_ptr
)
6110 const char **filename_ptr
;
6111 const char **functionname_ptr
;
6112 unsigned int *line_ptr
;
6116 if (_bfd_dwarf1_find_nearest_line (abfd
, section
, symbols
, offset
,
6117 filename_ptr
, functionname_ptr
,
6120 if (!*functionname_ptr
)
6121 elf_find_function (abfd
, section
, symbols
, offset
,
6122 *filename_ptr
? NULL
: filename_ptr
,
6128 if (_bfd_dwarf2_find_nearest_line (abfd
, section
, symbols
, offset
,
6129 filename_ptr
, functionname_ptr
,
6131 &elf_tdata (abfd
)->dwarf2_find_line_info
))
6133 if (!*functionname_ptr
)
6134 elf_find_function (abfd
, section
, symbols
, offset
,
6135 *filename_ptr
? NULL
: filename_ptr
,
6141 if (! _bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
6142 &found
, filename_ptr
,
6143 functionname_ptr
, line_ptr
,
6144 &elf_tdata (abfd
)->line_info
))
6146 if (found
&& (*functionname_ptr
|| *line_ptr
))
6149 if (symbols
== NULL
)
6152 if (! elf_find_function (abfd
, section
, symbols
, offset
,
6153 filename_ptr
, functionname_ptr
))
6161 _bfd_elf_sizeof_headers (abfd
, reloc
)
6167 ret
= get_elf_backend_data (abfd
)->s
->sizeof_ehdr
;
6169 ret
+= get_program_header_size (abfd
);
6174 _bfd_elf_set_section_contents (abfd
, section
, location
, offset
, count
)
6179 bfd_size_type count
;
6181 Elf_Internal_Shdr
*hdr
;
6184 if (! abfd
->output_has_begun
6185 && ! (_bfd_elf_compute_section_file_positions
6186 (abfd
, (struct bfd_link_info
*) NULL
)))
6189 hdr
= &elf_section_data (section
)->this_hdr
;
6190 pos
= hdr
->sh_offset
+ offset
;
6191 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0
6192 || bfd_bwrite (location
, count
, abfd
) != count
)
6199 _bfd_elf_no_info_to_howto (abfd
, cache_ptr
, dst
)
6200 bfd
*abfd ATTRIBUTE_UNUSED
;
6201 arelent
*cache_ptr ATTRIBUTE_UNUSED
;
6202 Elf_Internal_Rela
*dst ATTRIBUTE_UNUSED
;
6207 /* Try to convert a non-ELF reloc into an ELF one. */
6210 _bfd_elf_validate_reloc (abfd
, areloc
)
6214 /* Check whether we really have an ELF howto. */
6216 if ((*areloc
->sym_ptr_ptr
)->the_bfd
->xvec
!= abfd
->xvec
)
6218 bfd_reloc_code_real_type code
;
6219 reloc_howto_type
*howto
;
6221 /* Alien reloc: Try to determine its type to replace it with an
6222 equivalent ELF reloc. */
6224 if (areloc
->howto
->pc_relative
)
6226 switch (areloc
->howto
->bitsize
)
6229 code
= BFD_RELOC_8_PCREL
;
6232 code
= BFD_RELOC_12_PCREL
;
6235 code
= BFD_RELOC_16_PCREL
;
6238 code
= BFD_RELOC_24_PCREL
;
6241 code
= BFD_RELOC_32_PCREL
;
6244 code
= BFD_RELOC_64_PCREL
;
6250 howto
= bfd_reloc_type_lookup (abfd
, code
);
6252 if (areloc
->howto
->pcrel_offset
!= howto
->pcrel_offset
)
6254 if (howto
->pcrel_offset
)
6255 areloc
->addend
+= areloc
->address
;
6257 areloc
->addend
-= areloc
->address
; /* addend is unsigned!! */
6262 switch (areloc
->howto
->bitsize
)
6268 code
= BFD_RELOC_14
;
6271 code
= BFD_RELOC_16
;
6274 code
= BFD_RELOC_26
;
6277 code
= BFD_RELOC_32
;
6280 code
= BFD_RELOC_64
;
6286 howto
= bfd_reloc_type_lookup (abfd
, code
);
6290 areloc
->howto
= howto
;
6298 (*_bfd_error_handler
)
6299 (_("%s: unsupported relocation type %s"),
6300 bfd_archive_filename (abfd
), areloc
->howto
->name
);
6301 bfd_set_error (bfd_error_bad_value
);
6306 _bfd_elf_close_and_cleanup (abfd
)
6309 if (bfd_get_format (abfd
) == bfd_object
)
6311 if (elf_shstrtab (abfd
) != NULL
)
6312 _bfd_elf_strtab_free (elf_shstrtab (abfd
));
6315 return _bfd_generic_close_and_cleanup (abfd
);
6318 /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY
6319 in the relocation's offset. Thus we cannot allow any sort of sanity
6320 range-checking to interfere. There is nothing else to do in processing
6323 bfd_reloc_status_type
6324 _bfd_elf_rel_vtable_reloc_fn (abfd
, re
, symbol
, data
, is
, obfd
, errmsg
)
6325 bfd
*abfd ATTRIBUTE_UNUSED
;
6326 arelent
*re ATTRIBUTE_UNUSED
;
6327 struct symbol_cache_entry
*symbol ATTRIBUTE_UNUSED
;
6328 PTR data ATTRIBUTE_UNUSED
;
6329 asection
*is ATTRIBUTE_UNUSED
;
6330 bfd
*obfd ATTRIBUTE_UNUSED
;
6331 char **errmsg ATTRIBUTE_UNUSED
;
6333 return bfd_reloc_ok
;
6336 /* Elf core file support. Much of this only works on native
6337 toolchains, since we rely on knowing the
6338 machine-dependent procfs structure in order to pick
6339 out details about the corefile. */
6341 #ifdef HAVE_SYS_PROCFS_H
6342 # include <sys/procfs.h>
6345 /* FIXME: this is kinda wrong, but it's what gdb wants. */
6348 elfcore_make_pid (abfd
)
6351 return ((elf_tdata (abfd
)->core_lwpid
<< 16)
6352 + (elf_tdata (abfd
)->core_pid
));
6355 /* If there isn't a section called NAME, make one, using
6356 data from SECT. Note, this function will generate a
6357 reference to NAME, so you shouldn't deallocate or
6361 elfcore_maybe_make_sect (abfd
, name
, sect
)
6368 if (bfd_get_section_by_name (abfd
, name
) != NULL
)
6371 sect2
= bfd_make_section (abfd
, name
);
6375 sect2
->_raw_size
= sect
->_raw_size
;
6376 sect2
->filepos
= sect
->filepos
;
6377 sect2
->flags
= sect
->flags
;
6378 sect2
->alignment_power
= sect
->alignment_power
;
6382 /* Create a pseudosection containing SIZE bytes at FILEPOS. This
6383 actually creates up to two pseudosections:
6384 - For the single-threaded case, a section named NAME, unless
6385 such a section already exists.
6386 - For the multi-threaded case, a section named "NAME/PID", where
6387 PID is elfcore_make_pid (abfd).
6388 Both pseudosections have identical contents. */
6390 _bfd_elfcore_make_pseudosection (abfd
, name
, size
, filepos
)
6397 char *threaded_name
;
6401 /* Build the section name. */
6403 sprintf (buf
, "%s/%d", name
, elfcore_make_pid (abfd
));
6404 len
= strlen (buf
) + 1;
6405 threaded_name
= bfd_alloc (abfd
, (bfd_size_type
) len
);
6406 if (threaded_name
== NULL
)
6408 memcpy (threaded_name
, buf
, len
);
6410 sect
= bfd_make_section (abfd
, threaded_name
);
6413 sect
->_raw_size
= size
;
6414 sect
->filepos
= filepos
;
6415 sect
->flags
= SEC_HAS_CONTENTS
;
6416 sect
->alignment_power
= 2;
6418 return elfcore_maybe_make_sect (abfd
, name
, sect
);
6421 /* prstatus_t exists on:
6423 linux 2.[01] + glibc
6427 #if defined (HAVE_PRSTATUS_T)
6428 static bfd_boolean elfcore_grok_prstatus
6429 PARAMS ((bfd
*, Elf_Internal_Note
*));
6432 elfcore_grok_prstatus (abfd
, note
)
6434 Elf_Internal_Note
*note
;
6439 if (note
->descsz
== sizeof (prstatus_t
))
6443 raw_size
= sizeof (prstat
.pr_reg
);
6444 offset
= offsetof (prstatus_t
, pr_reg
);
6445 memcpy (&prstat
, note
->descdata
, sizeof (prstat
));
6447 /* Do not overwrite the core signal if it
6448 has already been set by another thread. */
6449 if (elf_tdata (abfd
)->core_signal
== 0)
6450 elf_tdata (abfd
)->core_signal
= prstat
.pr_cursig
;
6451 elf_tdata (abfd
)->core_pid
= prstat
.pr_pid
;
6453 /* pr_who exists on:
6456 pr_who doesn't exist on:
6459 #if defined (HAVE_PRSTATUS_T_PR_WHO)
6460 elf_tdata (abfd
)->core_lwpid
= prstat
.pr_who
;
6463 #if defined (HAVE_PRSTATUS32_T)
6464 else if (note
->descsz
== sizeof (prstatus32_t
))
6466 /* 64-bit host, 32-bit corefile */
6467 prstatus32_t prstat
;
6469 raw_size
= sizeof (prstat
.pr_reg
);
6470 offset
= offsetof (prstatus32_t
, pr_reg
);
6471 memcpy (&prstat
, note
->descdata
, sizeof (prstat
));
6473 /* Do not overwrite the core signal if it
6474 has already been set by another thread. */
6475 if (elf_tdata (abfd
)->core_signal
== 0)
6476 elf_tdata (abfd
)->core_signal
= prstat
.pr_cursig
;
6477 elf_tdata (abfd
)->core_pid
= prstat
.pr_pid
;
6479 /* pr_who exists on:
6482 pr_who doesn't exist on:
6485 #if defined (HAVE_PRSTATUS32_T_PR_WHO)
6486 elf_tdata (abfd
)->core_lwpid
= prstat
.pr_who
;
6489 #endif /* HAVE_PRSTATUS32_T */
6492 /* Fail - we don't know how to handle any other
6493 note size (ie. data object type). */
6497 /* Make a ".reg/999" section and a ".reg" section. */
6498 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
6499 raw_size
, note
->descpos
+ offset
);
6501 #endif /* defined (HAVE_PRSTATUS_T) */
6503 /* Create a pseudosection containing the exact contents of NOTE. */
6505 elfcore_make_note_pseudosection (abfd
, name
, note
)
6508 Elf_Internal_Note
*note
;
6510 return _bfd_elfcore_make_pseudosection (abfd
, name
,
6511 note
->descsz
, note
->descpos
);
6514 /* There isn't a consistent prfpregset_t across platforms,
6515 but it doesn't matter, because we don't have to pick this
6516 data structure apart. */
6519 elfcore_grok_prfpreg (abfd
, note
)
6521 Elf_Internal_Note
*note
;
6523 return elfcore_make_note_pseudosection (abfd
, ".reg2", note
);
6526 /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note
6527 type of 5 (NT_PRXFPREG). Just include the whole note's contents
6531 elfcore_grok_prxfpreg (abfd
, note
)
6533 Elf_Internal_Note
*note
;
6535 return elfcore_make_note_pseudosection (abfd
, ".reg-xfp", note
);
6538 #if defined (HAVE_PRPSINFO_T)
6539 typedef prpsinfo_t elfcore_psinfo_t
;
6540 #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */
6541 typedef prpsinfo32_t elfcore_psinfo32_t
;
6545 #if defined (HAVE_PSINFO_T)
6546 typedef psinfo_t elfcore_psinfo_t
;
6547 #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */
6548 typedef psinfo32_t elfcore_psinfo32_t
;
6552 /* return a malloc'ed copy of a string at START which is at
6553 most MAX bytes long, possibly without a terminating '\0'.
6554 the copy will always have a terminating '\0'. */
6557 _bfd_elfcore_strndup (abfd
, start
, max
)
6563 char *end
= memchr (start
, '\0', max
);
6571 dups
= bfd_alloc (abfd
, (bfd_size_type
) len
+ 1);
6575 memcpy (dups
, start
, len
);
6581 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
6582 static bfd_boolean elfcore_grok_psinfo
6583 PARAMS ((bfd
*, Elf_Internal_Note
*));
6586 elfcore_grok_psinfo (abfd
, note
)
6588 Elf_Internal_Note
*note
;
6590 if (note
->descsz
== sizeof (elfcore_psinfo_t
))
6592 elfcore_psinfo_t psinfo
;
6594 memcpy (&psinfo
, note
->descdata
, sizeof (psinfo
));
6596 elf_tdata (abfd
)->core_program
6597 = _bfd_elfcore_strndup (abfd
, psinfo
.pr_fname
,
6598 sizeof (psinfo
.pr_fname
));
6600 elf_tdata (abfd
)->core_command
6601 = _bfd_elfcore_strndup (abfd
, psinfo
.pr_psargs
,
6602 sizeof (psinfo
.pr_psargs
));
6604 #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T)
6605 else if (note
->descsz
== sizeof (elfcore_psinfo32_t
))
6607 /* 64-bit host, 32-bit corefile */
6608 elfcore_psinfo32_t psinfo
;
6610 memcpy (&psinfo
, note
->descdata
, sizeof (psinfo
));
6612 elf_tdata (abfd
)->core_program
6613 = _bfd_elfcore_strndup (abfd
, psinfo
.pr_fname
,
6614 sizeof (psinfo
.pr_fname
));
6616 elf_tdata (abfd
)->core_command
6617 = _bfd_elfcore_strndup (abfd
, psinfo
.pr_psargs
,
6618 sizeof (psinfo
.pr_psargs
));
6624 /* Fail - we don't know how to handle any other
6625 note size (ie. data object type). */
6629 /* Note that for some reason, a spurious space is tacked
6630 onto the end of the args in some (at least one anyway)
6631 implementations, so strip it off if it exists. */
6634 char *command
= elf_tdata (abfd
)->core_command
;
6635 int n
= strlen (command
);
6637 if (0 < n
&& command
[n
- 1] == ' ')
6638 command
[n
- 1] = '\0';
6643 #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */
6645 #if defined (HAVE_PSTATUS_T)
6646 static bfd_boolean elfcore_grok_pstatus
6647 PARAMS ((bfd
*, Elf_Internal_Note
*));
6650 elfcore_grok_pstatus (abfd
, note
)
6652 Elf_Internal_Note
*note
;
6654 if (note
->descsz
== sizeof (pstatus_t
)
6655 #if defined (HAVE_PXSTATUS_T)
6656 || note
->descsz
== sizeof (pxstatus_t
)
6662 memcpy (&pstat
, note
->descdata
, sizeof (pstat
));
6664 elf_tdata (abfd
)->core_pid
= pstat
.pr_pid
;
6666 #if defined (HAVE_PSTATUS32_T)
6667 else if (note
->descsz
== sizeof (pstatus32_t
))
6669 /* 64-bit host, 32-bit corefile */
6672 memcpy (&pstat
, note
->descdata
, sizeof (pstat
));
6674 elf_tdata (abfd
)->core_pid
= pstat
.pr_pid
;
6677 /* Could grab some more details from the "representative"
6678 lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an
6679 NT_LWPSTATUS note, presumably. */
6683 #endif /* defined (HAVE_PSTATUS_T) */
6685 #if defined (HAVE_LWPSTATUS_T)
6686 static bfd_boolean elfcore_grok_lwpstatus
6687 PARAMS ((bfd
*, Elf_Internal_Note
*));
6690 elfcore_grok_lwpstatus (abfd
, note
)
6692 Elf_Internal_Note
*note
;
6694 lwpstatus_t lwpstat
;
6700 if (note
->descsz
!= sizeof (lwpstat
)
6701 #if defined (HAVE_LWPXSTATUS_T)
6702 && note
->descsz
!= sizeof (lwpxstatus_t
)
6707 memcpy (&lwpstat
, note
->descdata
, sizeof (lwpstat
));
6709 elf_tdata (abfd
)->core_lwpid
= lwpstat
.pr_lwpid
;
6710 elf_tdata (abfd
)->core_signal
= lwpstat
.pr_cursig
;
6712 /* Make a ".reg/999" section. */
6714 sprintf (buf
, ".reg/%d", elfcore_make_pid (abfd
));
6715 len
= strlen (buf
) + 1;
6716 name
= bfd_alloc (abfd
, (bfd_size_type
) len
);
6719 memcpy (name
, buf
, len
);
6721 sect
= bfd_make_section (abfd
, name
);
6725 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
6726 sect
->_raw_size
= sizeof (lwpstat
.pr_context
.uc_mcontext
.gregs
);
6727 sect
->filepos
= note
->descpos
6728 + offsetof (lwpstatus_t
, pr_context
.uc_mcontext
.gregs
);
6731 #if defined (HAVE_LWPSTATUS_T_PR_REG)
6732 sect
->_raw_size
= sizeof (lwpstat
.pr_reg
);
6733 sect
->filepos
= note
->descpos
+ offsetof (lwpstatus_t
, pr_reg
);
6736 sect
->flags
= SEC_HAS_CONTENTS
;
6737 sect
->alignment_power
= 2;
6739 if (!elfcore_maybe_make_sect (abfd
, ".reg", sect
))
6742 /* Make a ".reg2/999" section */
6744 sprintf (buf
, ".reg2/%d", elfcore_make_pid (abfd
));
6745 len
= strlen (buf
) + 1;
6746 name
= bfd_alloc (abfd
, (bfd_size_type
) len
);
6749 memcpy (name
, buf
, len
);
6751 sect
= bfd_make_section (abfd
, name
);
6755 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
6756 sect
->_raw_size
= sizeof (lwpstat
.pr_context
.uc_mcontext
.fpregs
);
6757 sect
->filepos
= note
->descpos
6758 + offsetof (lwpstatus_t
, pr_context
.uc_mcontext
.fpregs
);
6761 #if defined (HAVE_LWPSTATUS_T_PR_FPREG)
6762 sect
->_raw_size
= sizeof (lwpstat
.pr_fpreg
);
6763 sect
->filepos
= note
->descpos
+ offsetof (lwpstatus_t
, pr_fpreg
);
6766 sect
->flags
= SEC_HAS_CONTENTS
;
6767 sect
->alignment_power
= 2;
6769 return elfcore_maybe_make_sect (abfd
, ".reg2", sect
);
6771 #endif /* defined (HAVE_LWPSTATUS_T) */
6773 #if defined (HAVE_WIN32_PSTATUS_T)
6775 elfcore_grok_win32pstatus (abfd
, note
)
6777 Elf_Internal_Note
*note
;
6783 win32_pstatus_t pstatus
;
6785 if (note
->descsz
< sizeof (pstatus
))
6788 memcpy (&pstatus
, note
->descdata
, sizeof (pstatus
));
6790 switch (pstatus
.data_type
)
6792 case NOTE_INFO_PROCESS
:
6793 /* FIXME: need to add ->core_command. */
6794 elf_tdata (abfd
)->core_signal
= pstatus
.data
.process_info
.signal
;
6795 elf_tdata (abfd
)->core_pid
= pstatus
.data
.process_info
.pid
;
6798 case NOTE_INFO_THREAD
:
6799 /* Make a ".reg/999" section. */
6800 sprintf (buf
, ".reg/%d", pstatus
.data
.thread_info
.tid
);
6802 len
= strlen (buf
) + 1;
6803 name
= bfd_alloc (abfd
, (bfd_size_type
) len
);
6807 memcpy (name
, buf
, len
);
6809 sect
= bfd_make_section (abfd
, name
);
6813 sect
->_raw_size
= sizeof (pstatus
.data
.thread_info
.thread_context
);
6814 sect
->filepos
= (note
->descpos
6815 + offsetof (struct win32_pstatus
,
6816 data
.thread_info
.thread_context
));
6817 sect
->flags
= SEC_HAS_CONTENTS
;
6818 sect
->alignment_power
= 2;
6820 if (pstatus
.data
.thread_info
.is_active_thread
)
6821 if (! elfcore_maybe_make_sect (abfd
, ".reg", sect
))
6825 case NOTE_INFO_MODULE
:
6826 /* Make a ".module/xxxxxxxx" section. */
6827 sprintf (buf
, ".module/%08x", pstatus
.data
.module_info
.base_address
);
6829 len
= strlen (buf
) + 1;
6830 name
= bfd_alloc (abfd
, (bfd_size_type
) len
);
6834 memcpy (name
, buf
, len
);
6836 sect
= bfd_make_section (abfd
, name
);
6841 sect
->_raw_size
= note
->descsz
;
6842 sect
->filepos
= note
->descpos
;
6843 sect
->flags
= SEC_HAS_CONTENTS
;
6844 sect
->alignment_power
= 2;
6853 #endif /* HAVE_WIN32_PSTATUS_T */
6856 elfcore_grok_note (abfd
, note
)
6858 Elf_Internal_Note
*note
;
6860 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
6868 if (bed
->elf_backend_grok_prstatus
)
6869 if ((*bed
->elf_backend_grok_prstatus
) (abfd
, note
))
6871 #if defined (HAVE_PRSTATUS_T)
6872 return elfcore_grok_prstatus (abfd
, note
);
6877 #if defined (HAVE_PSTATUS_T)
6879 return elfcore_grok_pstatus (abfd
, note
);
6882 #if defined (HAVE_LWPSTATUS_T)
6884 return elfcore_grok_lwpstatus (abfd
, note
);
6887 case NT_FPREGSET
: /* FIXME: rename to NT_PRFPREG */
6888 return elfcore_grok_prfpreg (abfd
, note
);
6890 #if defined (HAVE_WIN32_PSTATUS_T)
6891 case NT_WIN32PSTATUS
:
6892 return elfcore_grok_win32pstatus (abfd
, note
);
6895 case NT_PRXFPREG
: /* Linux SSE extension */
6896 if (note
->namesz
== 6
6897 && strcmp (note
->namedata
, "LINUX") == 0)
6898 return elfcore_grok_prxfpreg (abfd
, note
);
6904 if (bed
->elf_backend_grok_psinfo
)
6905 if ((*bed
->elf_backend_grok_psinfo
) (abfd
, note
))
6907 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
6908 return elfcore_grok_psinfo (abfd
, note
);
6915 asection
*sect
= bfd_make_section (abfd
, ".auxv");
6919 sect
->_raw_size
= note
->descsz
;
6920 sect
->filepos
= note
->descpos
;
6921 sect
->flags
= SEC_HAS_CONTENTS
;
6922 sect
->alignment_power
= 1 + bfd_get_arch_size (abfd
) / 32;
6930 elfcore_netbsd_get_lwpid (note
, lwpidp
)
6931 Elf_Internal_Note
*note
;
6936 cp
= strchr (note
->namedata
, '@');
6939 *lwpidp
= atoi(cp
+ 1);
6946 elfcore_grok_netbsd_procinfo (abfd
, note
)
6948 Elf_Internal_Note
*note
;
6951 /* Signal number at offset 0x08. */
6952 elf_tdata (abfd
)->core_signal
6953 = bfd_h_get_32 (abfd
, (bfd_byte
*) note
->descdata
+ 0x08);
6955 /* Process ID at offset 0x50. */
6956 elf_tdata (abfd
)->core_pid
6957 = bfd_h_get_32 (abfd
, (bfd_byte
*) note
->descdata
+ 0x50);
6959 /* Command name at 0x7c (max 32 bytes, including nul). */
6960 elf_tdata (abfd
)->core_command
6961 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 0x7c, 31);
6967 elfcore_grok_netbsd_note (abfd
, note
)
6969 Elf_Internal_Note
*note
;
6973 if (elfcore_netbsd_get_lwpid (note
, &lwp
))
6974 elf_tdata (abfd
)->core_lwpid
= lwp
;
6976 if (note
->type
== NT_NETBSDCORE_PROCINFO
)
6978 /* NetBSD-specific core "procinfo". Note that we expect to
6979 find this note before any of the others, which is fine,
6980 since the kernel writes this note out first when it
6981 creates a core file. */
6983 return elfcore_grok_netbsd_procinfo (abfd
, note
);
6986 /* As of Jan 2002 there are no other machine-independent notes
6987 defined for NetBSD core files. If the note type is less
6988 than the start of the machine-dependent note types, we don't
6991 if (note
->type
< NT_NETBSDCORE_FIRSTMACH
)
6995 switch (bfd_get_arch (abfd
))
6997 /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and
6998 PT_GETFPREGS == mach+2. */
7000 case bfd_arch_alpha
:
7001 case bfd_arch_sparc
:
7004 case NT_NETBSDCORE_FIRSTMACH
+0:
7005 return elfcore_make_note_pseudosection (abfd
, ".reg", note
);
7007 case NT_NETBSDCORE_FIRSTMACH
+2:
7008 return elfcore_make_note_pseudosection (abfd
, ".reg2", note
);
7014 /* On all other arch's, PT_GETREGS == mach+1 and
7015 PT_GETFPREGS == mach+3. */
7020 case NT_NETBSDCORE_FIRSTMACH
+1:
7021 return elfcore_make_note_pseudosection (abfd
, ".reg", note
);
7023 case NT_NETBSDCORE_FIRSTMACH
+3:
7024 return elfcore_make_note_pseudosection (abfd
, ".reg2", note
);
7034 elfcore_grok_nto_status (abfd
, note
, tid
)
7036 Elf_Internal_Note
*note
;
7039 void *ddata
= note
->descdata
;
7046 /* nto_procfs_status 'pid' field is at offset 0. */
7047 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, (bfd_byte
*) ddata
);
7049 /* nto_procfs_status 'tid' field is at offset 4. Pass it back. */
7050 *tid
= bfd_get_32 (abfd
, (bfd_byte
*) ddata
+ 4);
7052 /* nto_procfs_status 'flags' field is at offset 8. */
7053 flags
= bfd_get_32 (abfd
, (bfd_byte
*) ddata
+ 8);
7055 /* nto_procfs_status 'what' field is at offset 14. */
7056 if ((sig
= bfd_get_16 (abfd
, (bfd_byte
*) ddata
+ 14)) > 0)
7058 elf_tdata (abfd
)->core_signal
= sig
;
7059 elf_tdata (abfd
)->core_lwpid
= *tid
;
7062 /* _DEBUG_FLAG_CURTID (current thread) is 0x80. Some cores
7063 do not come from signals so we make sure we set the current
7064 thread just in case. */
7065 if (flags
& 0x00000080)
7066 elf_tdata (abfd
)->core_lwpid
= *tid
;
7068 /* Make a ".qnx_core_status/%d" section. */
7069 sprintf (buf
, ".qnx_core_status/%d", *tid
);
7071 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
7076 sect
= bfd_make_section (abfd
, name
);
7080 sect
->_raw_size
= note
->descsz
;
7081 sect
->filepos
= note
->descpos
;
7082 sect
->flags
= SEC_HAS_CONTENTS
;
7083 sect
->alignment_power
= 2;
7085 return (elfcore_maybe_make_sect (abfd
, ".qnx_core_status", sect
));
7089 elfcore_grok_nto_gregs (abfd
, note
, tid
)
7091 Elf_Internal_Note
*note
;
7098 /* Make a ".reg/%d" section. */
7099 sprintf (buf
, ".reg/%d", tid
);
7101 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
7106 sect
= bfd_make_section (abfd
, name
);
7110 sect
->_raw_size
= note
->descsz
;
7111 sect
->filepos
= note
->descpos
;
7112 sect
->flags
= SEC_HAS_CONTENTS
;
7113 sect
->alignment_power
= 2;
7115 /* This is the current thread. */
7116 if (elf_tdata (abfd
)->core_lwpid
== tid
)
7117 return elfcore_maybe_make_sect (abfd
, ".reg", sect
);
7122 #define BFD_QNT_CORE_INFO 7
7123 #define BFD_QNT_CORE_STATUS 8
7124 #define BFD_QNT_CORE_GREG 9
7125 #define BFD_QNT_CORE_FPREG 10
7128 elfcore_grok_nto_note (abfd
, note
)
7130 Elf_Internal_Note
*note
;
7132 /* Every GREG section has a STATUS section before it. Store the
7133 tid from the previous call to pass down to the next gregs
7135 static pid_t tid
= 1;
7139 case BFD_QNT_CORE_INFO
: return elfcore_make_note_pseudosection (abfd
, ".qnx_core_info", note
);
7140 case BFD_QNT_CORE_STATUS
: return elfcore_grok_nto_status (abfd
, note
, &tid
);
7141 case BFD_QNT_CORE_GREG
: return elfcore_grok_nto_gregs (abfd
, note
, tid
);
7142 case BFD_QNT_CORE_FPREG
: return elfcore_grok_prfpreg (abfd
, note
);
7143 default: return TRUE
;
7147 /* Function: elfcore_write_note
7154 size of data for note
7157 End of buffer containing note. */
7160 elfcore_write_note (abfd
, buf
, bufsiz
, name
, type
, input
, size
)
7169 Elf_External_Note
*xnp
;
7179 struct elf_backend_data
*bed
;
7181 namesz
= strlen (name
) + 1;
7182 bed
= get_elf_backend_data (abfd
);
7183 pad
= -namesz
& ((1 << bed
->s
->log_file_align
) - 1);
7186 newspace
= sizeof (Elf_External_Note
) - 1 + namesz
+ pad
+ size
;
7188 p
= realloc (buf
, *bufsiz
+ newspace
);
7190 *bufsiz
+= newspace
;
7191 xnp
= (Elf_External_Note
*) dest
;
7192 H_PUT_32 (abfd
, namesz
, xnp
->namesz
);
7193 H_PUT_32 (abfd
, size
, xnp
->descsz
);
7194 H_PUT_32 (abfd
, type
, xnp
->type
);
7198 memcpy (dest
, name
, namesz
);
7206 memcpy (dest
, input
, size
);
7210 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
7212 elfcore_write_prpsinfo (abfd
, buf
, bufsiz
, fname
, psargs
)
7220 char *note_name
= "CORE";
7222 #if defined (HAVE_PSINFO_T)
7224 note_type
= NT_PSINFO
;
7227 note_type
= NT_PRPSINFO
;
7230 memset (&data
, 0, sizeof (data
));
7231 strncpy (data
.pr_fname
, fname
, sizeof (data
.pr_fname
));
7232 strncpy (data
.pr_psargs
, psargs
, sizeof (data
.pr_psargs
));
7233 return elfcore_write_note (abfd
, buf
, bufsiz
,
7234 note_name
, note_type
, &data
, sizeof (data
));
7236 #endif /* PSINFO_T or PRPSINFO_T */
7238 #if defined (HAVE_PRSTATUS_T)
7240 elfcore_write_prstatus (abfd
, buf
, bufsiz
, pid
, cursig
, gregs
)
7249 char *note_name
= "CORE";
7251 memset (&prstat
, 0, sizeof (prstat
));
7252 prstat
.pr_pid
= pid
;
7253 prstat
.pr_cursig
= cursig
;
7254 memcpy (&prstat
.pr_reg
, gregs
, sizeof (prstat
.pr_reg
));
7255 return elfcore_write_note (abfd
, buf
, bufsiz
,
7256 note_name
, NT_PRSTATUS
, &prstat
, sizeof (prstat
));
7258 #endif /* HAVE_PRSTATUS_T */
7260 #if defined (HAVE_LWPSTATUS_T)
7262 elfcore_write_lwpstatus (abfd
, buf
, bufsiz
, pid
, cursig
, gregs
)
7270 lwpstatus_t lwpstat
;
7271 char *note_name
= "CORE";
7273 memset (&lwpstat
, 0, sizeof (lwpstat
));
7274 lwpstat
.pr_lwpid
= pid
>> 16;
7275 lwpstat
.pr_cursig
= cursig
;
7276 #if defined (HAVE_LWPSTATUS_T_PR_REG)
7277 memcpy (lwpstat
.pr_reg
, gregs
, sizeof (lwpstat
.pr_reg
));
7278 #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
7280 memcpy (lwpstat
.pr_context
.uc_mcontext
.gregs
,
7281 gregs
, sizeof (lwpstat
.pr_context
.uc_mcontext
.gregs
));
7283 memcpy (lwpstat
.pr_context
.uc_mcontext
.__gregs
,
7284 gregs
, sizeof (lwpstat
.pr_context
.uc_mcontext
.__gregs
));
7287 return elfcore_write_note (abfd
, buf
, bufsiz
, note_name
,
7288 NT_LWPSTATUS
, &lwpstat
, sizeof (lwpstat
));
7290 #endif /* HAVE_LWPSTATUS_T */
7292 #if defined (HAVE_PSTATUS_T)
7294 elfcore_write_pstatus (abfd
, buf
, bufsiz
, pid
, cursig
, gregs
)
7303 char *note_name
= "CORE";
7305 memset (&pstat
, 0, sizeof (pstat
));
7306 pstat
.pr_pid
= pid
& 0xffff;
7307 buf
= elfcore_write_note (abfd
, buf
, bufsiz
, note_name
,
7308 NT_PSTATUS
, &pstat
, sizeof (pstat
));
7311 #endif /* HAVE_PSTATUS_T */
7314 elfcore_write_prfpreg (abfd
, buf
, bufsiz
, fpregs
, size
)
7321 char *note_name
= "CORE";
7322 return elfcore_write_note (abfd
, buf
, bufsiz
,
7323 note_name
, NT_FPREGSET
, fpregs
, size
);
7327 elfcore_write_prxfpreg (abfd
, buf
, bufsiz
, xfpregs
, size
)
7334 char *note_name
= "LINUX";
7335 return elfcore_write_note (abfd
, buf
, bufsiz
,
7336 note_name
, NT_PRXFPREG
, xfpregs
, size
);
7340 elfcore_read_notes (abfd
, offset
, size
)
7351 if (bfd_seek (abfd
, offset
, SEEK_SET
) != 0)
7354 buf
= bfd_malloc (size
);
7358 if (bfd_bread (buf
, size
, abfd
) != size
)
7366 while (p
< buf
+ size
)
7368 /* FIXME: bad alignment assumption. */
7369 Elf_External_Note
*xnp
= (Elf_External_Note
*) p
;
7370 Elf_Internal_Note in
;
7372 in
.type
= H_GET_32 (abfd
, xnp
->type
);
7374 in
.namesz
= H_GET_32 (abfd
, xnp
->namesz
);
7375 in
.namedata
= xnp
->name
;
7377 in
.descsz
= H_GET_32 (abfd
, xnp
->descsz
);
7378 in
.descdata
= in
.namedata
+ BFD_ALIGN (in
.namesz
, 4);
7379 in
.descpos
= offset
+ (in
.descdata
- buf
);
7381 if (strncmp (in
.namedata
, "NetBSD-CORE", 11) == 0)
7383 if (! elfcore_grok_netbsd_note (abfd
, &in
))
7386 else if (strncmp (in
.namedata
, "QNX", 3) == 0)
7388 if (! elfcore_grok_nto_note (abfd
, &in
))
7393 if (! elfcore_grok_note (abfd
, &in
))
7397 p
= in
.descdata
+ BFD_ALIGN (in
.descsz
, 4);
7404 /* Providing external access to the ELF program header table. */
7406 /* Return an upper bound on the number of bytes required to store a
7407 copy of ABFD's program header table entries. Return -1 if an error
7408 occurs; bfd_get_error will return an appropriate code. */
7411 bfd_get_elf_phdr_upper_bound (abfd
)
7414 if (abfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
7416 bfd_set_error (bfd_error_wrong_format
);
7420 return elf_elfheader (abfd
)->e_phnum
* sizeof (Elf_Internal_Phdr
);
7423 /* Copy ABFD's program header table entries to *PHDRS. The entries
7424 will be stored as an array of Elf_Internal_Phdr structures, as
7425 defined in include/elf/internal.h. To find out how large the
7426 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
7428 Return the number of program header table entries read, or -1 if an
7429 error occurs; bfd_get_error will return an appropriate code. */
7432 bfd_get_elf_phdrs (abfd
, phdrs
)
7438 if (abfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
7440 bfd_set_error (bfd_error_wrong_format
);
7444 num_phdrs
= elf_elfheader (abfd
)->e_phnum
;
7445 memcpy (phdrs
, elf_tdata (abfd
)->phdr
,
7446 num_phdrs
* sizeof (Elf_Internal_Phdr
));
7452 _bfd_elf_sprintf_vma (abfd
, buf
, value
)
7453 bfd
*abfd ATTRIBUTE_UNUSED
;
7458 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
7460 i_ehdrp
= elf_elfheader (abfd
);
7461 if (i_ehdrp
== NULL
)
7462 sprintf_vma (buf
, value
);
7465 if (i_ehdrp
->e_ident
[EI_CLASS
] == ELFCLASS64
)
7467 #if BFD_HOST_64BIT_LONG
7468 sprintf (buf
, "%016lx", value
);
7470 sprintf (buf
, "%08lx%08lx", _bfd_int64_high (value
),
7471 _bfd_int64_low (value
));
7475 sprintf (buf
, "%08lx", (unsigned long) (value
& 0xffffffff));
7478 sprintf_vma (buf
, value
);
7483 _bfd_elf_fprintf_vma (abfd
, stream
, value
)
7484 bfd
*abfd ATTRIBUTE_UNUSED
;
7489 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
7491 i_ehdrp
= elf_elfheader (abfd
);
7492 if (i_ehdrp
== NULL
)
7493 fprintf_vma ((FILE *) stream
, value
);
7496 if (i_ehdrp
->e_ident
[EI_CLASS
] == ELFCLASS64
)
7498 #if BFD_HOST_64BIT_LONG
7499 fprintf ((FILE *) stream
, "%016lx", value
);
7501 fprintf ((FILE *) stream
, "%08lx%08lx",
7502 _bfd_int64_high (value
), _bfd_int64_low (value
));
7506 fprintf ((FILE *) stream
, "%08lx",
7507 (unsigned long) (value
& 0xffffffff));
7510 fprintf_vma ((FILE *) stream
, value
);
7514 enum elf_reloc_type_class
7515 _bfd_elf_reloc_type_class (rela
)
7516 const Elf_Internal_Rela
*rela ATTRIBUTE_UNUSED
;
7518 return reloc_class_normal
;
7521 /* For RELA architectures, return the relocation value for a
7522 relocation against a local symbol. */
7525 _bfd_elf_rela_local_sym (abfd
, sym
, sec
, rel
)
7527 Elf_Internal_Sym
*sym
;
7529 Elf_Internal_Rela
*rel
;
7533 relocation
= (sec
->output_section
->vma
7534 + sec
->output_offset
7536 if ((sec
->flags
& SEC_MERGE
)
7537 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
7538 && sec
->sec_info_type
== ELF_INFO_TYPE_MERGE
)
7544 _bfd_merged_section_offset (abfd
, &msec
,
7545 elf_section_data (sec
)->sec_info
,
7546 sym
->st_value
+ rel
->r_addend
,
7549 rel
->r_addend
+= msec
->output_section
->vma
+ msec
->output_offset
;
7555 _bfd_elf_rel_local_sym (abfd
, sym
, psec
, addend
)
7557 Elf_Internal_Sym
*sym
;
7561 asection
*sec
= *psec
;
7563 if (sec
->sec_info_type
!= ELF_INFO_TYPE_MERGE
)
7564 return sym
->st_value
+ addend
;
7566 return _bfd_merged_section_offset (abfd
, psec
,
7567 elf_section_data (sec
)->sec_info
,
7568 sym
->st_value
+ addend
, (bfd_vma
) 0);
7572 _bfd_elf_section_offset (abfd
, info
, sec
, offset
)
7574 struct bfd_link_info
*info
;
7578 struct bfd_elf_section_data
*sec_data
;
7580 sec_data
= elf_section_data (sec
);
7581 switch (sec
->sec_info_type
)
7583 case ELF_INFO_TYPE_STABS
:
7584 return _bfd_stab_section_offset (abfd
,
7585 &elf_hash_table (info
)->merge_info
,
7586 sec
, &sec_data
->sec_info
, offset
);
7587 case ELF_INFO_TYPE_EH_FRAME
:
7588 return _bfd_elf_eh_frame_section_offset (abfd
, sec
, offset
);
7594 /* Create a new BFD as if by bfd_openr. Rather than opening a file,
7595 reconstruct an ELF file by reading the segments out of remote memory
7596 based on the ELF file header at EHDR_VMA and the ELF program headers it
7597 points to. If not null, *LOADBASEP is filled in with the difference
7598 between the VMAs from which the segments were read, and the VMAs the
7599 file headers (and hence BFD's idea of each section's VMA) put them at.
7601 The function TARGET_READ_MEMORY is called to copy LEN bytes from the
7602 remote memory at target address VMA into the local buffer at MYADDR; it
7603 should return zero on success or an `errno' code on failure. TEMPL must
7604 be a BFD for an ELF target with the word size and byte order found in
7605 the remote memory. */
7608 bfd_elf_bfd_from_remote_memory (templ
, ehdr_vma
, loadbasep
, target_read_memory
)
7612 int (*target_read_memory
) PARAMS ((bfd_vma vma
, char *myaddr
, int len
));
7614 return (*get_elf_backend_data (templ
)->elf_backend_bfd_from_remote_memory
)
7615 (templ
, ehdr_vma
, loadbasep
, target_read_memory
);