1 /* ELF executable support for BFD.
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
3 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, boolean
));
45 static boolean map_sections_to_segments
PARAMS ((bfd
*));
46 static int elf_sort_sections
PARAMS ((const PTR
, const PTR
));
47 static boolean assign_file_positions_for_segments
PARAMS ((bfd
*));
48 static boolean assign_file_positions_except_relocs
PARAMS ((bfd
*));
49 static boolean prep_headers
PARAMS ((bfd
*));
50 static boolean swap_out_syms
PARAMS ((bfd
*, struct bfd_strtab_hash
**, int));
51 static boolean copy_private_bfd_data
PARAMS ((bfd
*, bfd
*));
52 static char *elf_read
PARAMS ((bfd
*, file_ptr
, bfd_size_type
));
53 static boolean setup_group
PARAMS ((bfd
*, Elf_Internal_Shdr
*, asection
*));
54 static void merge_sections_remove_hook
PARAMS ((bfd
*, asection
*));
55 static void elf_fake_sections
PARAMS ((bfd
*, asection
*, PTR
));
56 static void set_group_contents
PARAMS ((bfd
*, asection
*, PTR
));
57 static boolean assign_section_numbers
PARAMS ((bfd
*));
58 static INLINE
int sym_is_global
PARAMS ((bfd
*, asymbol
*));
59 static boolean elf_map_symbols
PARAMS ((bfd
*));
60 static bfd_size_type get_program_header_size
PARAMS ((bfd
*));
61 static boolean elfcore_read_notes
PARAMS ((bfd
*, file_ptr
, bfd_size_type
));
62 static boolean elf_find_function
PARAMS ((bfd
*, asection
*, asymbol
**,
63 bfd_vma
, const char **,
65 static int elfcore_make_pid
PARAMS ((bfd
*));
66 static boolean elfcore_maybe_make_sect
PARAMS ((bfd
*, char *, asection
*));
67 static boolean elfcore_make_note_pseudosection
PARAMS ((bfd
*, char *,
68 Elf_Internal_Note
*));
69 static boolean elfcore_grok_prfpreg
PARAMS ((bfd
*, Elf_Internal_Note
*));
70 static boolean elfcore_grok_prxfpreg
PARAMS ((bfd
*, Elf_Internal_Note
*));
71 static boolean elfcore_grok_note
PARAMS ((bfd
*, Elf_Internal_Note
*));
73 static boolean elfcore_netbsd_get_lwpid
PARAMS ((Elf_Internal_Note
*, int *));
74 static boolean elfcore_grok_netbsd_procinfo
PARAMS ((bfd
*,
75 Elf_Internal_Note
*));
76 static boolean elfcore_grok_netbsd_note
PARAMS ((bfd
*, Elf_Internal_Note
*));
78 /* Swap version information in and out. The version information is
79 currently size independent. If that ever changes, this code will
80 need to move into elfcode.h. */
82 /* Swap in a Verdef structure. */
85 _bfd_elf_swap_verdef_in (abfd
, src
, dst
)
87 const Elf_External_Verdef
*src
;
88 Elf_Internal_Verdef
*dst
;
90 dst
->vd_version
= H_GET_16 (abfd
, src
->vd_version
);
91 dst
->vd_flags
= H_GET_16 (abfd
, src
->vd_flags
);
92 dst
->vd_ndx
= H_GET_16 (abfd
, src
->vd_ndx
);
93 dst
->vd_cnt
= H_GET_16 (abfd
, src
->vd_cnt
);
94 dst
->vd_hash
= H_GET_32 (abfd
, src
->vd_hash
);
95 dst
->vd_aux
= H_GET_32 (abfd
, src
->vd_aux
);
96 dst
->vd_next
= H_GET_32 (abfd
, src
->vd_next
);
99 /* Swap out a Verdef structure. */
102 _bfd_elf_swap_verdef_out (abfd
, src
, dst
)
104 const Elf_Internal_Verdef
*src
;
105 Elf_External_Verdef
*dst
;
107 H_PUT_16 (abfd
, src
->vd_version
, dst
->vd_version
);
108 H_PUT_16 (abfd
, src
->vd_flags
, dst
->vd_flags
);
109 H_PUT_16 (abfd
, src
->vd_ndx
, dst
->vd_ndx
);
110 H_PUT_16 (abfd
, src
->vd_cnt
, dst
->vd_cnt
);
111 H_PUT_32 (abfd
, src
->vd_hash
, dst
->vd_hash
);
112 H_PUT_32 (abfd
, src
->vd_aux
, dst
->vd_aux
);
113 H_PUT_32 (abfd
, src
->vd_next
, dst
->vd_next
);
116 /* Swap in a Verdaux structure. */
119 _bfd_elf_swap_verdaux_in (abfd
, src
, dst
)
121 const Elf_External_Verdaux
*src
;
122 Elf_Internal_Verdaux
*dst
;
124 dst
->vda_name
= H_GET_32 (abfd
, src
->vda_name
);
125 dst
->vda_next
= H_GET_32 (abfd
, src
->vda_next
);
128 /* Swap out a Verdaux structure. */
131 _bfd_elf_swap_verdaux_out (abfd
, src
, dst
)
133 const Elf_Internal_Verdaux
*src
;
134 Elf_External_Verdaux
*dst
;
136 H_PUT_32 (abfd
, src
->vda_name
, dst
->vda_name
);
137 H_PUT_32 (abfd
, src
->vda_next
, dst
->vda_next
);
140 /* Swap in a Verneed structure. */
143 _bfd_elf_swap_verneed_in (abfd
, src
, dst
)
145 const Elf_External_Verneed
*src
;
146 Elf_Internal_Verneed
*dst
;
148 dst
->vn_version
= H_GET_16 (abfd
, src
->vn_version
);
149 dst
->vn_cnt
= H_GET_16 (abfd
, src
->vn_cnt
);
150 dst
->vn_file
= H_GET_32 (abfd
, src
->vn_file
);
151 dst
->vn_aux
= H_GET_32 (abfd
, src
->vn_aux
);
152 dst
->vn_next
= H_GET_32 (abfd
, src
->vn_next
);
155 /* Swap out a Verneed structure. */
158 _bfd_elf_swap_verneed_out (abfd
, src
, dst
)
160 const Elf_Internal_Verneed
*src
;
161 Elf_External_Verneed
*dst
;
163 H_PUT_16 (abfd
, src
->vn_version
, dst
->vn_version
);
164 H_PUT_16 (abfd
, src
->vn_cnt
, dst
->vn_cnt
);
165 H_PUT_32 (abfd
, src
->vn_file
, dst
->vn_file
);
166 H_PUT_32 (abfd
, src
->vn_aux
, dst
->vn_aux
);
167 H_PUT_32 (abfd
, src
->vn_next
, dst
->vn_next
);
170 /* Swap in a Vernaux structure. */
173 _bfd_elf_swap_vernaux_in (abfd
, src
, dst
)
175 const Elf_External_Vernaux
*src
;
176 Elf_Internal_Vernaux
*dst
;
178 dst
->vna_hash
= H_GET_32 (abfd
, src
->vna_hash
);
179 dst
->vna_flags
= H_GET_16 (abfd
, src
->vna_flags
);
180 dst
->vna_other
= H_GET_16 (abfd
, src
->vna_other
);
181 dst
->vna_name
= H_GET_32 (abfd
, src
->vna_name
);
182 dst
->vna_next
= H_GET_32 (abfd
, src
->vna_next
);
185 /* Swap out a Vernaux structure. */
188 _bfd_elf_swap_vernaux_out (abfd
, src
, dst
)
190 const Elf_Internal_Vernaux
*src
;
191 Elf_External_Vernaux
*dst
;
193 H_PUT_32 (abfd
, src
->vna_hash
, dst
->vna_hash
);
194 H_PUT_16 (abfd
, src
->vna_flags
, dst
->vna_flags
);
195 H_PUT_16 (abfd
, src
->vna_other
, dst
->vna_other
);
196 H_PUT_32 (abfd
, src
->vna_name
, dst
->vna_name
);
197 H_PUT_32 (abfd
, src
->vna_next
, dst
->vna_next
);
200 /* Swap in a Versym structure. */
203 _bfd_elf_swap_versym_in (abfd
, src
, dst
)
205 const Elf_External_Versym
*src
;
206 Elf_Internal_Versym
*dst
;
208 dst
->vs_vers
= H_GET_16 (abfd
, src
->vs_vers
);
211 /* Swap out a Versym structure. */
214 _bfd_elf_swap_versym_out (abfd
, src
, dst
)
216 const Elf_Internal_Versym
*src
;
217 Elf_External_Versym
*dst
;
219 H_PUT_16 (abfd
, src
->vs_vers
, dst
->vs_vers
);
222 /* Standard ELF hash function. Do not change this function; you will
223 cause invalid hash tables to be generated. */
226 bfd_elf_hash (namearg
)
229 const unsigned char *name
= (const unsigned char *) namearg
;
234 while ((ch
= *name
++) != '\0')
237 if ((g
= (h
& 0xf0000000)) != 0)
240 /* The ELF ABI says `h &= ~g', but this is equivalent in
241 this case and on some machines one insn instead of two. */
248 /* Read a specified number of bytes at a specified offset in an ELF
249 file, into a newly allocated buffer, and return a pointer to the
253 elf_read (abfd
, offset
, size
)
260 if ((buf
= bfd_alloc (abfd
, size
)) == NULL
)
262 if (bfd_seek (abfd
, offset
, SEEK_SET
) != 0)
264 if (bfd_bread ((PTR
) buf
, size
, abfd
) != size
)
266 if (bfd_get_error () != bfd_error_system_call
)
267 bfd_set_error (bfd_error_file_truncated
);
274 bfd_elf_mkobject (abfd
)
277 /* This just does initialization. */
278 /* coff_mkobject zalloc's space for tdata.coff_obj_data ... */
279 bfd_size_type amt
= sizeof (struct elf_obj_tdata
);
280 elf_tdata (abfd
) = (struct elf_obj_tdata
*) bfd_zalloc (abfd
, amt
);
281 if (elf_tdata (abfd
) == 0)
283 /* Since everything is done at close time, do we need any
290 bfd_elf_mkcorefile (abfd
)
293 /* I think this can be done just like an object file. */
294 return bfd_elf_mkobject (abfd
);
298 bfd_elf_get_str_section (abfd
, shindex
)
300 unsigned int shindex
;
302 Elf_Internal_Shdr
**i_shdrp
;
303 char *shstrtab
= NULL
;
305 bfd_size_type shstrtabsize
;
307 i_shdrp
= elf_elfsections (abfd
);
308 if (i_shdrp
== 0 || i_shdrp
[shindex
] == 0)
311 shstrtab
= (char *) i_shdrp
[shindex
]->contents
;
312 if (shstrtab
== NULL
)
314 /* No cached one, attempt to read, and cache what we read. */
315 offset
= i_shdrp
[shindex
]->sh_offset
;
316 shstrtabsize
= i_shdrp
[shindex
]->sh_size
;
317 shstrtab
= elf_read (abfd
, offset
, shstrtabsize
);
318 i_shdrp
[shindex
]->contents
= (PTR
) shstrtab
;
324 bfd_elf_string_from_elf_section (abfd
, shindex
, strindex
)
326 unsigned int shindex
;
327 unsigned int strindex
;
329 Elf_Internal_Shdr
*hdr
;
334 hdr
= elf_elfsections (abfd
)[shindex
];
336 if (hdr
->contents
== NULL
337 && bfd_elf_get_str_section (abfd
, shindex
) == NULL
)
340 if (strindex
>= hdr
->sh_size
)
342 (*_bfd_error_handler
)
343 (_("%s: invalid string offset %u >= %lu for section `%s'"),
344 bfd_archive_filename (abfd
), strindex
, (unsigned long) hdr
->sh_size
,
345 ((shindex
== elf_elfheader(abfd
)->e_shstrndx
346 && strindex
== hdr
->sh_name
)
348 : elf_string_from_elf_strtab (abfd
, hdr
->sh_name
)));
352 return ((char *) hdr
->contents
) + strindex
;
355 /* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP
356 sections. The first element is the flags, the rest are section
359 typedef union elf_internal_group
{
360 Elf_Internal_Shdr
*shdr
;
362 } Elf_Internal_Group
;
364 /* Set next_in_group list pointer, and group name for NEWSECT. */
367 setup_group (abfd
, hdr
, newsect
)
369 Elf_Internal_Shdr
*hdr
;
372 unsigned int num_group
= elf_tdata (abfd
)->num_group
;
374 /* If num_group is zero, read in all SHT_GROUP sections. The count
375 is set to -1 if there are no SHT_GROUP sections. */
378 unsigned int i
, shnum
;
380 /* First count the number of groups. If we have a SHT_GROUP
381 section with just a flag word (ie. sh_size is 4), ignore it. */
382 shnum
= elf_numsections (abfd
);
384 for (i
= 0; i
< shnum
; i
++)
386 Elf_Internal_Shdr
*shdr
= elf_elfsections (abfd
)[i
];
387 if (shdr
->sh_type
== SHT_GROUP
&& shdr
->sh_size
>= 8)
392 num_group
= (unsigned) -1;
393 elf_tdata (abfd
)->num_group
= num_group
;
397 /* We keep a list of elf section headers for group sections,
398 so we can find them quickly. */
399 bfd_size_type amt
= num_group
* sizeof (Elf_Internal_Shdr
*);
400 elf_tdata (abfd
)->group_sect_ptr
= bfd_alloc (abfd
, amt
);
401 if (elf_tdata (abfd
)->group_sect_ptr
== NULL
)
405 for (i
= 0; i
< shnum
; i
++)
407 Elf_Internal_Shdr
*shdr
= elf_elfsections (abfd
)[i
];
408 if (shdr
->sh_type
== SHT_GROUP
&& shdr
->sh_size
>= 8)
411 Elf_Internal_Group
*dest
;
413 /* Add to list of sections. */
414 elf_tdata (abfd
)->group_sect_ptr
[num_group
] = shdr
;
417 /* Read the raw contents. */
418 BFD_ASSERT (sizeof (*dest
) >= 4);
419 amt
= shdr
->sh_size
* sizeof (*dest
) / 4;
420 shdr
->contents
= bfd_alloc (abfd
, amt
);
421 if (shdr
->contents
== NULL
422 || bfd_seek (abfd
, shdr
->sh_offset
, SEEK_SET
) != 0
423 || (bfd_bread (shdr
->contents
, shdr
->sh_size
, abfd
)
427 /* Translate raw contents, a flag word followed by an
428 array of elf section indices all in target byte order,
429 to the flag word followed by an array of elf section
431 src
= shdr
->contents
+ shdr
->sh_size
;
432 dest
= (Elf_Internal_Group
*) (shdr
->contents
+ amt
);
439 idx
= H_GET_32 (abfd
, src
);
440 if (src
== shdr
->contents
)
447 ((*_bfd_error_handler
)
448 (_("%s: invalid SHT_GROUP entry"),
449 bfd_archive_filename (abfd
)));
452 dest
->shdr
= elf_elfsections (abfd
)[idx
];
459 if (num_group
!= (unsigned) -1)
463 for (i
= 0; i
< num_group
; i
++)
465 Elf_Internal_Shdr
*shdr
= elf_tdata (abfd
)->group_sect_ptr
[i
];
466 Elf_Internal_Group
*idx
= (Elf_Internal_Group
*) shdr
->contents
;
467 unsigned int n_elt
= shdr
->sh_size
/ 4;
469 /* Look through this group's sections to see if current
470 section is a member. */
472 if ((++idx
)->shdr
== hdr
)
476 /* We are a member of this group. Go looking through
477 other members to see if any others are linked via
479 idx
= (Elf_Internal_Group
*) shdr
->contents
;
480 n_elt
= shdr
->sh_size
/ 4;
482 if ((s
= (++idx
)->shdr
->bfd_section
) != NULL
483 && elf_next_in_group (s
) != NULL
)
487 /* Snarf the group name from other member, and
488 insert current section in circular list. */
489 elf_group_name (newsect
) = elf_group_name (s
);
490 elf_next_in_group (newsect
) = elf_next_in_group (s
);
491 elf_next_in_group (s
) = newsect
;
495 struct elf_backend_data
*bed
;
497 unsigned char ename
[4];
501 /* Humbug. Get the name from the group signature
502 symbol. Why isn't the signature just a string?
503 Fortunately, the name index is at the same
504 place in the external symbol for both 32 and 64
506 bed
= get_elf_backend_data (abfd
);
507 pos
= elf_tdata (abfd
)->symtab_hdr
.sh_offset
;
508 pos
+= shdr
->sh_info
* bed
->s
->sizeof_sym
;
509 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0
510 || bfd_bread (ename
, (bfd_size_type
) 4, abfd
) != 4)
512 iname
= H_GET_32 (abfd
, ename
);
513 gname
= elf_string_from_elf_strtab (abfd
, iname
);
514 elf_group_name (newsect
) = gname
;
516 /* Start a circular list with one element. */
517 elf_next_in_group (newsect
) = newsect
;
519 if (shdr
->bfd_section
!= NULL
)
520 elf_next_in_group (shdr
->bfd_section
) = newsect
;
527 if (elf_group_name (newsect
) == NULL
)
529 (*_bfd_error_handler
) (_("%s: no group info for section %s"),
530 bfd_archive_filename (abfd
), newsect
->name
);
535 /* Make a BFD section from an ELF section. We store a pointer to the
536 BFD section in the bfd_section field of the header. */
539 _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
)
541 Elf_Internal_Shdr
*hdr
;
546 struct elf_backend_data
*bed
;
548 if (hdr
->bfd_section
!= NULL
)
550 BFD_ASSERT (strcmp (name
,
551 bfd_get_section_name (abfd
, hdr
->bfd_section
)) == 0);
555 newsect
= bfd_make_section_anyway (abfd
, name
);
559 newsect
->filepos
= hdr
->sh_offset
;
561 if (! bfd_set_section_vma (abfd
, newsect
, hdr
->sh_addr
)
562 || ! bfd_set_section_size (abfd
, newsect
, hdr
->sh_size
)
563 || ! bfd_set_section_alignment (abfd
, newsect
,
564 bfd_log2 ((bfd_vma
) hdr
->sh_addralign
)))
567 flags
= SEC_NO_FLAGS
;
568 if (hdr
->sh_type
!= SHT_NOBITS
)
569 flags
|= SEC_HAS_CONTENTS
;
570 if (hdr
->sh_type
== SHT_GROUP
)
571 flags
|= SEC_GROUP
| SEC_EXCLUDE
;
572 if ((hdr
->sh_flags
& SHF_ALLOC
) != 0)
575 if (hdr
->sh_type
!= SHT_NOBITS
)
578 if ((hdr
->sh_flags
& SHF_WRITE
) == 0)
579 flags
|= SEC_READONLY
;
580 if ((hdr
->sh_flags
& SHF_EXECINSTR
) != 0)
582 else if ((flags
& SEC_LOAD
) != 0)
584 if ((hdr
->sh_flags
& SHF_MERGE
) != 0)
587 newsect
->entsize
= hdr
->sh_entsize
;
588 if ((hdr
->sh_flags
& SHF_STRINGS
) != 0)
589 flags
|= SEC_STRINGS
;
591 if (hdr
->sh_flags
& SHF_GROUP
)
592 if (!setup_group (abfd
, hdr
, newsect
))
595 /* The debugging sections appear to be recognized only by name, not
598 static const char *debug_sec_names
[] =
607 for (i
= ARRAY_SIZE (debug_sec_names
); i
--;)
608 if (strncmp (name
, debug_sec_names
[i
], strlen (debug_sec_names
[i
])) == 0)
612 flags
|= SEC_DEBUGGING
;
615 /* As a GNU extension, if the name begins with .gnu.linkonce, we
616 only link a single copy of the section. This is used to support
617 g++. g++ will emit each template expansion in its own section.
618 The symbols will be defined as weak, so that multiple definitions
619 are permitted. The GNU linker extension is to actually discard
620 all but one of the sections. */
621 if (strncmp (name
, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0)
622 flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_DISCARD
;
624 bed
= get_elf_backend_data (abfd
);
625 if (bed
->elf_backend_section_flags
)
626 if (! bed
->elf_backend_section_flags (&flags
, hdr
))
629 if (! bfd_set_section_flags (abfd
, newsect
, flags
))
632 if ((flags
& SEC_ALLOC
) != 0)
634 Elf_Internal_Phdr
*phdr
;
637 /* Look through the phdrs to see if we need to adjust the lma.
638 If all the p_paddr fields are zero, we ignore them, since
639 some ELF linkers produce such output. */
640 phdr
= elf_tdata (abfd
)->phdr
;
641 for (i
= 0; i
< elf_elfheader (abfd
)->e_phnum
; i
++, phdr
++)
643 if (phdr
->p_paddr
!= 0)
646 if (i
< elf_elfheader (abfd
)->e_phnum
)
648 phdr
= elf_tdata (abfd
)->phdr
;
649 for (i
= 0; i
< elf_elfheader (abfd
)->e_phnum
; i
++, phdr
++)
651 /* This section is part of this segment if its file
652 offset plus size lies within the segment's memory
653 span and, if the section is loaded, the extent of the
654 loaded data lies within the extent of the segment.
656 Note - we used to check the p_paddr field as well, and
657 refuse to set the LMA if it was 0. This is wrong
658 though as a perfectly valid, initialised segment can
659 have a p_paddr of zero. Some architectures, eg ARM,
660 place special significance one the address 0 and
661 executables need to be able to have a segment which
662 covers this address. */
663 if (phdr
->p_type
== PT_LOAD
664 && (bfd_vma
) hdr
->sh_offset
>= phdr
->p_offset
665 && (hdr
->sh_offset
+ hdr
->sh_size
666 <= phdr
->p_offset
+ phdr
->p_memsz
)
667 && ((flags
& SEC_LOAD
) == 0
668 || (phdr
->p_offset
+ phdr
->p_filesz
669 >= hdr
->sh_offset
+ hdr
->sh_size
)))
671 /* We used to do a relative adjustment here, but
672 that doesn't work if the segment is packed with
673 code from multiple VMAs. Instead we calculate
674 the LMA absoultely, based on the LMA of the
675 segment (it is assumed that the segment will
676 contain sections with contiguous LMAs, even if
677 the VMAs are not). */
678 newsect
->lma
= phdr
->p_paddr
679 + hdr
->sh_offset
- phdr
->p_offset
;
686 hdr
->bfd_section
= newsect
;
687 elf_section_data (newsect
)->this_hdr
= *hdr
;
697 struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name);
700 Helper functions for GDB to locate the string tables.
701 Since BFD hides string tables from callers, GDB needs to use an
702 internal hook to find them. Sun's .stabstr, in particular,
703 isn't even pointed to by the .stab section, so ordinary
704 mechanisms wouldn't work to find it, even if we had some.
707 struct elf_internal_shdr
*
708 bfd_elf_find_section (abfd
, name
)
712 Elf_Internal_Shdr
**i_shdrp
;
717 i_shdrp
= elf_elfsections (abfd
);
720 shstrtab
= bfd_elf_get_str_section (abfd
,
721 elf_elfheader (abfd
)->e_shstrndx
);
722 if (shstrtab
!= NULL
)
724 max
= elf_numsections (abfd
);
725 for (i
= 1; i
< max
; i
++)
726 if (!strcmp (&shstrtab
[i_shdrp
[i
]->sh_name
], name
))
733 const char *const bfd_elf_section_type_names
[] = {
734 "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB",
735 "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE",
736 "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM",
739 /* ELF relocs are against symbols. If we are producing relocateable
740 output, and the reloc is against an external symbol, and nothing
741 has given us any additional addend, the resulting reloc will also
742 be against the same symbol. In such a case, we don't want to
743 change anything about the way the reloc is handled, since it will
744 all be done at final link time. Rather than put special case code
745 into bfd_perform_relocation, all the reloc types use this howto
746 function. It just short circuits the reloc if producing
747 relocateable output against an external symbol. */
749 bfd_reloc_status_type
750 bfd_elf_generic_reloc (abfd
,
757 bfd
*abfd ATTRIBUTE_UNUSED
;
758 arelent
*reloc_entry
;
760 PTR data ATTRIBUTE_UNUSED
;
761 asection
*input_section
;
763 char **error_message ATTRIBUTE_UNUSED
;
765 if (output_bfd
!= (bfd
*) NULL
766 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
767 && (! reloc_entry
->howto
->partial_inplace
768 || reloc_entry
->addend
== 0))
770 reloc_entry
->address
+= input_section
->output_offset
;
774 return bfd_reloc_continue
;
777 /* Make sure sec_info_type is cleared if sec_info is cleared too. */
780 merge_sections_remove_hook (abfd
, sec
)
781 bfd
*abfd ATTRIBUTE_UNUSED
;
784 struct bfd_elf_section_data
*sec_data
;
786 sec_data
= elf_section_data (sec
);
787 BFD_ASSERT (sec_data
->sec_info_type
== ELF_INFO_TYPE_MERGE
);
788 sec_data
->sec_info_type
= ELF_INFO_TYPE_NONE
;
791 /* Finish SHF_MERGE section merging. */
794 _bfd_elf_merge_sections (abfd
, info
)
796 struct bfd_link_info
*info
;
798 if (!is_elf_hash_table (info
))
800 if (elf_hash_table (info
)->merge_info
)
801 _bfd_merge_sections (abfd
, elf_hash_table (info
)->merge_info
,
802 merge_sections_remove_hook
);
806 /* Copy the program header and other data from one object module to
810 _bfd_elf_copy_private_bfd_data (ibfd
, obfd
)
814 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
815 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
818 BFD_ASSERT (!elf_flags_init (obfd
)
819 || (elf_elfheader (obfd
)->e_flags
820 == elf_elfheader (ibfd
)->e_flags
));
822 elf_gp (obfd
) = elf_gp (ibfd
);
823 elf_elfheader (obfd
)->e_flags
= elf_elfheader (ibfd
)->e_flags
;
824 elf_flags_init (obfd
) = true;
828 /* Print out the program headers. */
831 _bfd_elf_print_private_bfd_data (abfd
, farg
)
835 FILE *f
= (FILE *) farg
;
836 Elf_Internal_Phdr
*p
;
838 bfd_byte
*dynbuf
= NULL
;
840 p
= elf_tdata (abfd
)->phdr
;
845 fprintf (f
, _("\nProgram Header:\n"));
846 c
= elf_elfheader (abfd
)->e_phnum
;
847 for (i
= 0; i
< c
; i
++, p
++)
854 case PT_NULL
: pt
= "NULL"; break;
855 case PT_LOAD
: pt
= "LOAD"; break;
856 case PT_DYNAMIC
: pt
= "DYNAMIC"; break;
857 case PT_INTERP
: pt
= "INTERP"; break;
858 case PT_NOTE
: pt
= "NOTE"; break;
859 case PT_SHLIB
: pt
= "SHLIB"; break;
860 case PT_PHDR
: pt
= "PHDR"; break;
861 case PT_GNU_EH_FRAME
: pt
= "EH_FRAME"; break;
862 default: sprintf (buf
, "0x%lx", p
->p_type
); pt
= buf
; break;
864 fprintf (f
, "%8s off 0x", pt
);
865 bfd_fprintf_vma (abfd
, f
, p
->p_offset
);
866 fprintf (f
, " vaddr 0x");
867 bfd_fprintf_vma (abfd
, f
, p
->p_vaddr
);
868 fprintf (f
, " paddr 0x");
869 bfd_fprintf_vma (abfd
, f
, p
->p_paddr
);
870 fprintf (f
, " align 2**%u\n", bfd_log2 (p
->p_align
));
871 fprintf (f
, " filesz 0x");
872 bfd_fprintf_vma (abfd
, f
, p
->p_filesz
);
873 fprintf (f
, " memsz 0x");
874 bfd_fprintf_vma (abfd
, f
, p
->p_memsz
);
875 fprintf (f
, " flags %c%c%c",
876 (p
->p_flags
& PF_R
) != 0 ? 'r' : '-',
877 (p
->p_flags
& PF_W
) != 0 ? 'w' : '-',
878 (p
->p_flags
& PF_X
) != 0 ? 'x' : '-');
879 if ((p
->p_flags
&~ (unsigned) (PF_R
| PF_W
| PF_X
)) != 0)
880 fprintf (f
, " %lx", p
->p_flags
&~ (unsigned) (PF_R
| PF_W
| PF_X
));
885 s
= bfd_get_section_by_name (abfd
, ".dynamic");
889 unsigned long shlink
;
890 bfd_byte
*extdyn
, *extdynend
;
892 void (*swap_dyn_in
) PARAMS ((bfd
*, const PTR
, Elf_Internal_Dyn
*));
894 fprintf (f
, _("\nDynamic Section:\n"));
896 dynbuf
= (bfd_byte
*) bfd_malloc (s
->_raw_size
);
899 if (! bfd_get_section_contents (abfd
, s
, (PTR
) dynbuf
, (file_ptr
) 0,
903 elfsec
= _bfd_elf_section_from_bfd_section (abfd
, s
);
906 shlink
= elf_elfsections (abfd
)[elfsec
]->sh_link
;
908 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
909 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
912 extdynend
= extdyn
+ s
->_raw_size
;
913 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
915 Elf_Internal_Dyn dyn
;
920 (*swap_dyn_in
) (abfd
, (PTR
) extdyn
, &dyn
);
922 if (dyn
.d_tag
== DT_NULL
)
929 sprintf (ab
, "0x%lx", (unsigned long) dyn
.d_tag
);
933 case DT_NEEDED
: name
= "NEEDED"; stringp
= true; break;
934 case DT_PLTRELSZ
: name
= "PLTRELSZ"; break;
935 case DT_PLTGOT
: name
= "PLTGOT"; break;
936 case DT_HASH
: name
= "HASH"; break;
937 case DT_STRTAB
: name
= "STRTAB"; break;
938 case DT_SYMTAB
: name
= "SYMTAB"; break;
939 case DT_RELA
: name
= "RELA"; break;
940 case DT_RELASZ
: name
= "RELASZ"; break;
941 case DT_RELAENT
: name
= "RELAENT"; break;
942 case DT_STRSZ
: name
= "STRSZ"; break;
943 case DT_SYMENT
: name
= "SYMENT"; break;
944 case DT_INIT
: name
= "INIT"; break;
945 case DT_FINI
: name
= "FINI"; break;
946 case DT_SONAME
: name
= "SONAME"; stringp
= true; break;
947 case DT_RPATH
: name
= "RPATH"; stringp
= true; break;
948 case DT_SYMBOLIC
: name
= "SYMBOLIC"; break;
949 case DT_REL
: name
= "REL"; break;
950 case DT_RELSZ
: name
= "RELSZ"; break;
951 case DT_RELENT
: name
= "RELENT"; break;
952 case DT_PLTREL
: name
= "PLTREL"; break;
953 case DT_DEBUG
: name
= "DEBUG"; break;
954 case DT_TEXTREL
: name
= "TEXTREL"; break;
955 case DT_JMPREL
: name
= "JMPREL"; break;
956 case DT_BIND_NOW
: name
= "BIND_NOW"; break;
957 case DT_INIT_ARRAY
: name
= "INIT_ARRAY"; break;
958 case DT_FINI_ARRAY
: name
= "FINI_ARRAY"; break;
959 case DT_INIT_ARRAYSZ
: name
= "INIT_ARRAYSZ"; break;
960 case DT_FINI_ARRAYSZ
: name
= "FINI_ARRAYSZ"; break;
961 case DT_RUNPATH
: name
= "RUNPATH"; stringp
= true; break;
962 case DT_FLAGS
: name
= "FLAGS"; break;
963 case DT_PREINIT_ARRAY
: name
= "PREINIT_ARRAY"; break;
964 case DT_PREINIT_ARRAYSZ
: name
= "PREINIT_ARRAYSZ"; break;
965 case DT_CHECKSUM
: name
= "CHECKSUM"; break;
966 case DT_PLTPADSZ
: name
= "PLTPADSZ"; break;
967 case DT_MOVEENT
: name
= "MOVEENT"; break;
968 case DT_MOVESZ
: name
= "MOVESZ"; break;
969 case DT_FEATURE
: name
= "FEATURE"; break;
970 case DT_POSFLAG_1
: name
= "POSFLAG_1"; break;
971 case DT_SYMINSZ
: name
= "SYMINSZ"; break;
972 case DT_SYMINENT
: name
= "SYMINENT"; break;
973 case DT_CONFIG
: name
= "CONFIG"; stringp
= true; break;
974 case DT_DEPAUDIT
: name
= "DEPAUDIT"; stringp
= true; break;
975 case DT_AUDIT
: name
= "AUDIT"; stringp
= true; break;
976 case DT_PLTPAD
: name
= "PLTPAD"; break;
977 case DT_MOVETAB
: name
= "MOVETAB"; break;
978 case DT_SYMINFO
: name
= "SYMINFO"; break;
979 case DT_RELACOUNT
: name
= "RELACOUNT"; break;
980 case DT_RELCOUNT
: name
= "RELCOUNT"; break;
981 case DT_FLAGS_1
: name
= "FLAGS_1"; break;
982 case DT_VERSYM
: name
= "VERSYM"; break;
983 case DT_VERDEF
: name
= "VERDEF"; break;
984 case DT_VERDEFNUM
: name
= "VERDEFNUM"; break;
985 case DT_VERNEED
: name
= "VERNEED"; break;
986 case DT_VERNEEDNUM
: name
= "VERNEEDNUM"; break;
987 case DT_AUXILIARY
: name
= "AUXILIARY"; stringp
= true; break;
988 case DT_USED
: name
= "USED"; break;
989 case DT_FILTER
: name
= "FILTER"; stringp
= true; break;
992 fprintf (f
, " %-11s ", name
);
994 fprintf (f
, "0x%lx", (unsigned long) dyn
.d_un
.d_val
);
998 unsigned int tagv
= dyn
.d_un
.d_val
;
1000 string
= bfd_elf_string_from_elf_section (abfd
, shlink
, tagv
);
1003 fprintf (f
, "%s", string
);
1012 if ((elf_dynverdef (abfd
) != 0 && elf_tdata (abfd
)->verdef
== NULL
)
1013 || (elf_dynverref (abfd
) != 0 && elf_tdata (abfd
)->verref
== NULL
))
1015 if (! _bfd_elf_slurp_version_tables (abfd
))
1019 if (elf_dynverdef (abfd
) != 0)
1021 Elf_Internal_Verdef
*t
;
1023 fprintf (f
, _("\nVersion definitions:\n"));
1024 for (t
= elf_tdata (abfd
)->verdef
; t
!= NULL
; t
= t
->vd_nextdef
)
1026 fprintf (f
, "%d 0x%2.2x 0x%8.8lx %s\n", t
->vd_ndx
,
1027 t
->vd_flags
, t
->vd_hash
, t
->vd_nodename
);
1028 if (t
->vd_auxptr
->vda_nextptr
!= NULL
)
1030 Elf_Internal_Verdaux
*a
;
1033 for (a
= t
->vd_auxptr
->vda_nextptr
;
1036 fprintf (f
, "%s ", a
->vda_nodename
);
1042 if (elf_dynverref (abfd
) != 0)
1044 Elf_Internal_Verneed
*t
;
1046 fprintf (f
, _("\nVersion References:\n"));
1047 for (t
= elf_tdata (abfd
)->verref
; t
!= NULL
; t
= t
->vn_nextref
)
1049 Elf_Internal_Vernaux
*a
;
1051 fprintf (f
, _(" required from %s:\n"), t
->vn_filename
);
1052 for (a
= t
->vn_auxptr
; a
!= NULL
; a
= a
->vna_nextptr
)
1053 fprintf (f
, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a
->vna_hash
,
1054 a
->vna_flags
, a
->vna_other
, a
->vna_nodename
);
1066 /* Display ELF-specific fields of a symbol. */
1069 bfd_elf_print_symbol (abfd
, filep
, symbol
, how
)
1073 bfd_print_symbol_type how
;
1075 FILE *file
= (FILE *) filep
;
1078 case bfd_print_symbol_name
:
1079 fprintf (file
, "%s", symbol
->name
);
1081 case bfd_print_symbol_more
:
1082 fprintf (file
, "elf ");
1083 bfd_fprintf_vma (abfd
, file
, symbol
->value
);
1084 fprintf (file
, " %lx", (long) symbol
->flags
);
1086 case bfd_print_symbol_all
:
1088 const char *section_name
;
1089 const char *name
= NULL
;
1090 struct elf_backend_data
*bed
;
1091 unsigned char st_other
;
1094 section_name
= symbol
->section
? symbol
->section
->name
: "(*none*)";
1096 bed
= get_elf_backend_data (abfd
);
1097 if (bed
->elf_backend_print_symbol_all
)
1098 name
= (*bed
->elf_backend_print_symbol_all
) (abfd
, filep
, symbol
);
1102 name
= symbol
->name
;
1103 bfd_print_symbol_vandf (abfd
, (PTR
) file
, symbol
);
1106 fprintf (file
, " %s\t", section_name
);
1107 /* Print the "other" value for a symbol. For common symbols,
1108 we've already printed the size; now print the alignment.
1109 For other symbols, we have no specified alignment, and
1110 we've printed the address; now print the size. */
1111 if (bfd_is_com_section (symbol
->section
))
1112 val
= ((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_value
;
1114 val
= ((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_size
;
1115 bfd_fprintf_vma (abfd
, file
, val
);
1117 /* If we have version information, print it. */
1118 if (elf_tdata (abfd
)->dynversym_section
!= 0
1119 && (elf_tdata (abfd
)->dynverdef_section
!= 0
1120 || elf_tdata (abfd
)->dynverref_section
!= 0))
1122 unsigned int vernum
;
1123 const char *version_string
;
1125 vernum
= ((elf_symbol_type
*) symbol
)->version
& VERSYM_VERSION
;
1128 version_string
= "";
1129 else if (vernum
== 1)
1130 version_string
= "Base";
1131 else if (vernum
<= elf_tdata (abfd
)->cverdefs
)
1133 elf_tdata (abfd
)->verdef
[vernum
- 1].vd_nodename
;
1136 Elf_Internal_Verneed
*t
;
1138 version_string
= "";
1139 for (t
= elf_tdata (abfd
)->verref
;
1143 Elf_Internal_Vernaux
*a
;
1145 for (a
= t
->vn_auxptr
; a
!= NULL
; a
= a
->vna_nextptr
)
1147 if (a
->vna_other
== vernum
)
1149 version_string
= a
->vna_nodename
;
1156 if ((((elf_symbol_type
*) symbol
)->version
& VERSYM_HIDDEN
) == 0)
1157 fprintf (file
, " %-11s", version_string
);
1162 fprintf (file
, " (%s)", version_string
);
1163 for (i
= 10 - strlen (version_string
); i
> 0; --i
)
1168 /* If the st_other field is not zero, print it. */
1169 st_other
= ((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_other
;
1174 case STV_INTERNAL
: fprintf (file
, " .internal"); break;
1175 case STV_HIDDEN
: fprintf (file
, " .hidden"); break;
1176 case STV_PROTECTED
: fprintf (file
, " .protected"); break;
1178 /* Some other non-defined flags are also present, so print
1180 fprintf (file
, " 0x%02x", (unsigned int) st_other
);
1183 fprintf (file
, " %s", name
);
1189 /* Create an entry in an ELF linker hash table. */
1191 struct bfd_hash_entry
*
1192 _bfd_elf_link_hash_newfunc (entry
, table
, string
)
1193 struct bfd_hash_entry
*entry
;
1194 struct bfd_hash_table
*table
;
1197 /* Allocate the structure if it has not already been allocated by a
1201 entry
= bfd_hash_allocate (table
, sizeof (struct elf_link_hash_entry
));
1206 /* Call the allocation method of the superclass. */
1207 entry
= _bfd_link_hash_newfunc (entry
, table
, string
);
1210 struct elf_link_hash_entry
*ret
= (struct elf_link_hash_entry
*) entry
;
1211 struct elf_link_hash_table
*htab
= (struct elf_link_hash_table
*) table
;
1213 /* Set local fields. */
1217 ret
->dynstr_index
= 0;
1218 ret
->weakdef
= NULL
;
1219 ret
->got
.refcount
= htab
->init_refcount
;
1220 ret
->plt
.refcount
= htab
->init_refcount
;
1221 ret
->linker_section_pointer
= NULL
;
1222 ret
->verinfo
.verdef
= NULL
;
1223 ret
->vtable_entries_used
= NULL
;
1224 ret
->vtable_entries_size
= 0;
1225 ret
->vtable_parent
= NULL
;
1226 ret
->type
= STT_NOTYPE
;
1228 /* Assume that we have been called by a non-ELF symbol reader.
1229 This flag is then reset by the code which reads an ELF input
1230 file. This ensures that a symbol created by a non-ELF symbol
1231 reader will have the flag set correctly. */
1232 ret
->elf_link_hash_flags
= ELF_LINK_NON_ELF
;
1238 /* Copy data from an indirect symbol to its direct symbol, hiding the
1239 old indirect symbol. Also used for copying flags to a weakdef. */
1242 _bfd_elf_link_hash_copy_indirect (dir
, ind
)
1243 struct elf_link_hash_entry
*dir
, *ind
;
1247 /* Copy down any references that we may have already seen to the
1248 symbol which just became indirect. */
1250 dir
->elf_link_hash_flags
|=
1251 (ind
->elf_link_hash_flags
1252 & (ELF_LINK_HASH_REF_DYNAMIC
1253 | ELF_LINK_HASH_REF_REGULAR
1254 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
1255 | ELF_LINK_NON_GOT_REF
));
1257 if (ind
->root
.type
!= bfd_link_hash_indirect
)
1260 /* Copy over the global and procedure linkage table refcount entries.
1261 These may have been already set up by a check_relocs routine. */
1262 tmp
= dir
->got
.refcount
;
1265 dir
->got
.refcount
= ind
->got
.refcount
;
1266 ind
->got
.refcount
= tmp
;
1269 BFD_ASSERT (ind
->got
.refcount
<= 0);
1271 tmp
= dir
->plt
.refcount
;
1274 dir
->plt
.refcount
= ind
->plt
.refcount
;
1275 ind
->plt
.refcount
= tmp
;
1278 BFD_ASSERT (ind
->plt
.refcount
<= 0);
1280 if (dir
->dynindx
== -1)
1282 dir
->dynindx
= ind
->dynindx
;
1283 dir
->dynstr_index
= ind
->dynstr_index
;
1285 ind
->dynstr_index
= 0;
1288 BFD_ASSERT (ind
->dynindx
== -1);
1292 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
)
1293 struct bfd_link_info
*info
;
1294 struct elf_link_hash_entry
*h
;
1295 boolean force_local
;
1297 h
->plt
.offset
= (bfd_vma
) -1;
1298 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
1301 h
->elf_link_hash_flags
|= ELF_LINK_FORCED_LOCAL
;
1302 if (h
->dynindx
!= -1)
1305 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
1311 /* Initialize an ELF linker hash table. */
1314 _bfd_elf_link_hash_table_init (table
, abfd
, newfunc
)
1315 struct elf_link_hash_table
*table
;
1317 struct bfd_hash_entry
*(*newfunc
) PARAMS ((struct bfd_hash_entry
*,
1318 struct bfd_hash_table
*,
1323 table
->dynamic_sections_created
= false;
1324 table
->dynobj
= NULL
;
1325 table
->init_refcount
= get_elf_backend_data (abfd
)->can_refcount
- 1;
1326 /* The first dynamic symbol is a dummy. */
1327 table
->dynsymcount
= 1;
1328 table
->dynstr
= NULL
;
1329 table
->bucketcount
= 0;
1330 table
->needed
= NULL
;
1331 table
->runpath
= NULL
;
1333 table
->stab_info
= NULL
;
1334 table
->merge_info
= NULL
;
1335 table
->dynlocal
= NULL
;
1336 ret
= _bfd_link_hash_table_init (& table
->root
, abfd
, newfunc
);
1337 table
->root
.type
= bfd_link_elf_hash_table
;
1342 /* Create an ELF linker hash table. */
1344 struct bfd_link_hash_table
*
1345 _bfd_elf_link_hash_table_create (abfd
)
1348 struct elf_link_hash_table
*ret
;
1349 bfd_size_type amt
= sizeof (struct elf_link_hash_table
);
1351 ret
= (struct elf_link_hash_table
*) bfd_alloc (abfd
, amt
);
1352 if (ret
== (struct elf_link_hash_table
*) NULL
)
1355 if (! _bfd_elf_link_hash_table_init (ret
, abfd
, _bfd_elf_link_hash_newfunc
))
1357 bfd_release (abfd
, ret
);
1364 /* This is a hook for the ELF emulation code in the generic linker to
1365 tell the backend linker what file name to use for the DT_NEEDED
1366 entry for a dynamic object. The generic linker passes name as an
1367 empty string to indicate that no DT_NEEDED entry should be made. */
1370 bfd_elf_set_dt_needed_name (abfd
, name
)
1374 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1375 && bfd_get_format (abfd
) == bfd_object
)
1376 elf_dt_name (abfd
) = name
;
1380 bfd_elf_set_dt_needed_soname (abfd
, name
)
1384 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1385 && bfd_get_format (abfd
) == bfd_object
)
1386 elf_dt_soname (abfd
) = name
;
1389 /* Get the list of DT_NEEDED entries for a link. This is a hook for
1390 the linker ELF emulation code. */
1392 struct bfd_link_needed_list
*
1393 bfd_elf_get_needed_list (abfd
, info
)
1394 bfd
*abfd ATTRIBUTE_UNUSED
;
1395 struct bfd_link_info
*info
;
1397 if (info
->hash
->creator
->flavour
!= bfd_target_elf_flavour
)
1399 return elf_hash_table (info
)->needed
;
1402 /* Get the list of DT_RPATH/DT_RUNPATH entries for a link. This is a
1403 hook for the linker ELF emulation code. */
1405 struct bfd_link_needed_list
*
1406 bfd_elf_get_runpath_list (abfd
, info
)
1407 bfd
*abfd ATTRIBUTE_UNUSED
;
1408 struct bfd_link_info
*info
;
1410 if (info
->hash
->creator
->flavour
!= bfd_target_elf_flavour
)
1412 return elf_hash_table (info
)->runpath
;
1415 /* Get the name actually used for a dynamic object for a link. This
1416 is the SONAME entry if there is one. Otherwise, it is the string
1417 passed to bfd_elf_set_dt_needed_name, or it is the filename. */
1420 bfd_elf_get_dt_soname (abfd
)
1423 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1424 && bfd_get_format (abfd
) == bfd_object
)
1425 return elf_dt_name (abfd
);
1429 /* Get the list of DT_NEEDED entries from a BFD. This is a hook for
1430 the ELF linker emulation code. */
1433 bfd_elf_get_bfd_needed_list (abfd
, pneeded
)
1435 struct bfd_link_needed_list
**pneeded
;
1438 bfd_byte
*dynbuf
= NULL
;
1440 unsigned long shlink
;
1441 bfd_byte
*extdyn
, *extdynend
;
1443 void (*swap_dyn_in
) PARAMS ((bfd
*, const PTR
, Elf_Internal_Dyn
*));
1447 if (bfd_get_flavour (abfd
) != bfd_target_elf_flavour
1448 || bfd_get_format (abfd
) != bfd_object
)
1451 s
= bfd_get_section_by_name (abfd
, ".dynamic");
1452 if (s
== NULL
|| s
->_raw_size
== 0)
1455 dynbuf
= (bfd_byte
*) bfd_malloc (s
->_raw_size
);
1459 if (! bfd_get_section_contents (abfd
, s
, (PTR
) dynbuf
, (file_ptr
) 0,
1463 elfsec
= _bfd_elf_section_from_bfd_section (abfd
, s
);
1467 shlink
= elf_elfsections (abfd
)[elfsec
]->sh_link
;
1469 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
1470 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
1473 extdynend
= extdyn
+ s
->_raw_size
;
1474 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
1476 Elf_Internal_Dyn dyn
;
1478 (*swap_dyn_in
) (abfd
, (PTR
) extdyn
, &dyn
);
1480 if (dyn
.d_tag
== DT_NULL
)
1483 if (dyn
.d_tag
== DT_NEEDED
)
1486 struct bfd_link_needed_list
*l
;
1487 unsigned int tagv
= dyn
.d_un
.d_val
;
1490 string
= bfd_elf_string_from_elf_section (abfd
, shlink
, tagv
);
1495 l
= (struct bfd_link_needed_list
*) bfd_alloc (abfd
, amt
);
1516 /* Allocate an ELF string table--force the first byte to be zero. */
1518 struct bfd_strtab_hash
*
1519 _bfd_elf_stringtab_init ()
1521 struct bfd_strtab_hash
*ret
;
1523 ret
= _bfd_stringtab_init ();
1528 loc
= _bfd_stringtab_add (ret
, "", true, false);
1529 BFD_ASSERT (loc
== 0 || loc
== (bfd_size_type
) -1);
1530 if (loc
== (bfd_size_type
) -1)
1532 _bfd_stringtab_free (ret
);
1539 /* ELF .o/exec file reading */
1541 /* Create a new bfd section from an ELF section header. */
1544 bfd_section_from_shdr (abfd
, shindex
)
1546 unsigned int shindex
;
1548 Elf_Internal_Shdr
*hdr
= elf_elfsections (abfd
)[shindex
];
1549 Elf_Internal_Ehdr
*ehdr
= elf_elfheader (abfd
);
1550 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1553 name
= elf_string_from_elf_strtab (abfd
, hdr
->sh_name
);
1555 switch (hdr
->sh_type
)
1558 /* Inactive section. Throw it away. */
1561 case SHT_PROGBITS
: /* Normal section with contents. */
1562 case SHT_DYNAMIC
: /* Dynamic linking information. */
1563 case SHT_NOBITS
: /* .bss section. */
1564 case SHT_HASH
: /* .hash section. */
1565 case SHT_NOTE
: /* .note section. */
1566 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1568 case SHT_SYMTAB
: /* A symbol table */
1569 if (elf_onesymtab (abfd
) == shindex
)
1572 BFD_ASSERT (hdr
->sh_entsize
== bed
->s
->sizeof_sym
);
1573 BFD_ASSERT (elf_onesymtab (abfd
) == 0);
1574 elf_onesymtab (abfd
) = shindex
;
1575 elf_tdata (abfd
)->symtab_hdr
= *hdr
;
1576 elf_elfsections (abfd
)[shindex
] = hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1577 abfd
->flags
|= HAS_SYMS
;
1579 /* Sometimes a shared object will map in the symbol table. If
1580 SHF_ALLOC is set, and this is a shared object, then we also
1581 treat this section as a BFD section. We can not base the
1582 decision purely on SHF_ALLOC, because that flag is sometimes
1583 set in a relocateable object file, which would confuse the
1585 if ((hdr
->sh_flags
& SHF_ALLOC
) != 0
1586 && (abfd
->flags
& DYNAMIC
) != 0
1587 && ! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
))
1592 case SHT_DYNSYM
: /* A dynamic symbol table */
1593 if (elf_dynsymtab (abfd
) == shindex
)
1596 BFD_ASSERT (hdr
->sh_entsize
== bed
->s
->sizeof_sym
);
1597 BFD_ASSERT (elf_dynsymtab (abfd
) == 0);
1598 elf_dynsymtab (abfd
) = shindex
;
1599 elf_tdata (abfd
)->dynsymtab_hdr
= *hdr
;
1600 elf_elfsections (abfd
)[shindex
] = hdr
= &elf_tdata (abfd
)->dynsymtab_hdr
;
1601 abfd
->flags
|= HAS_SYMS
;
1603 /* Besides being a symbol table, we also treat this as a regular
1604 section, so that objcopy can handle it. */
1605 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1607 case SHT_SYMTAB_SHNDX
: /* Symbol section indices when >64k sections */
1608 if (elf_symtab_shndx (abfd
) == shindex
)
1611 /* Get the associated symbol table. */
1612 if (! bfd_section_from_shdr (abfd
, hdr
->sh_link
)
1613 || hdr
->sh_link
!= elf_onesymtab (abfd
))
1616 elf_symtab_shndx (abfd
) = shindex
;
1617 elf_tdata (abfd
)->symtab_shndx_hdr
= *hdr
;
1618 elf_elfsections (abfd
)[shindex
] = &elf_tdata (abfd
)->symtab_shndx_hdr
;
1621 case SHT_STRTAB
: /* A string table */
1622 if (hdr
->bfd_section
!= NULL
)
1624 if (ehdr
->e_shstrndx
== shindex
)
1626 elf_tdata (abfd
)->shstrtab_hdr
= *hdr
;
1627 elf_elfsections (abfd
)[shindex
] = &elf_tdata (abfd
)->shstrtab_hdr
;
1631 unsigned int i
, num_sec
;
1633 num_sec
= elf_numsections (abfd
);
1634 for (i
= 1; i
< num_sec
; i
++)
1636 Elf_Internal_Shdr
*hdr2
= elf_elfsections (abfd
)[i
];
1637 if (hdr2
->sh_link
== shindex
)
1639 if (! bfd_section_from_shdr (abfd
, i
))
1641 if (elf_onesymtab (abfd
) == i
)
1643 elf_tdata (abfd
)->strtab_hdr
= *hdr
;
1644 elf_elfsections (abfd
)[shindex
] =
1645 &elf_tdata (abfd
)->strtab_hdr
;
1648 if (elf_dynsymtab (abfd
) == i
)
1650 elf_tdata (abfd
)->dynstrtab_hdr
= *hdr
;
1651 elf_elfsections (abfd
)[shindex
] = hdr
=
1652 &elf_tdata (abfd
)->dynstrtab_hdr
;
1653 /* We also treat this as a regular section, so
1654 that objcopy can handle it. */
1657 #if 0 /* Not handling other string tables specially right now. */
1658 hdr2
= elf_elfsections (abfd
)[i
]; /* in case it moved */
1659 /* We have a strtab for some random other section. */
1660 newsect
= (asection
*) hdr2
->bfd_section
;
1663 hdr
->bfd_section
= newsect
;
1664 hdr2
= &elf_section_data (newsect
)->str_hdr
;
1666 elf_elfsections (abfd
)[shindex
] = hdr2
;
1672 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1676 /* *These* do a lot of work -- but build no sections! */
1678 asection
*target_sect
;
1679 Elf_Internal_Shdr
*hdr2
;
1680 unsigned int num_sec
= elf_numsections (abfd
);
1682 /* Check for a bogus link to avoid crashing. */
1683 if ((hdr
->sh_link
>= SHN_LORESERVE
&& hdr
->sh_link
<= SHN_HIRESERVE
)
1684 || hdr
->sh_link
>= num_sec
)
1686 ((*_bfd_error_handler
)
1687 (_("%s: invalid link %lu for reloc section %s (index %u)"),
1688 bfd_archive_filename (abfd
), hdr
->sh_link
, name
, shindex
));
1689 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1692 /* For some incomprehensible reason Oracle distributes
1693 libraries for Solaris in which some of the objects have
1694 bogus sh_link fields. It would be nice if we could just
1695 reject them, but, unfortunately, some people need to use
1696 them. We scan through the section headers; if we find only
1697 one suitable symbol table, we clobber the sh_link to point
1698 to it. I hope this doesn't break anything. */
1699 if (elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
!= SHT_SYMTAB
1700 && elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
!= SHT_DYNSYM
)
1706 for (scan
= 1; scan
< num_sec
; scan
++)
1708 if (elf_elfsections (abfd
)[scan
]->sh_type
== SHT_SYMTAB
1709 || elf_elfsections (abfd
)[scan
]->sh_type
== SHT_DYNSYM
)
1720 hdr
->sh_link
= found
;
1723 /* Get the symbol table. */
1724 if (elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
== SHT_SYMTAB
1725 && ! bfd_section_from_shdr (abfd
, hdr
->sh_link
))
1728 /* If this reloc section does not use the main symbol table we
1729 don't treat it as a reloc section. BFD can't adequately
1730 represent such a section, so at least for now, we don't
1731 try. We just present it as a normal section. We also
1732 can't use it as a reloc section if it points to the null
1734 if (hdr
->sh_link
!= elf_onesymtab (abfd
) || hdr
->sh_info
== SHN_UNDEF
)
1735 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1737 if (! bfd_section_from_shdr (abfd
, hdr
->sh_info
))
1739 target_sect
= bfd_section_from_elf_index (abfd
, hdr
->sh_info
);
1740 if (target_sect
== NULL
)
1743 if ((target_sect
->flags
& SEC_RELOC
) == 0
1744 || target_sect
->reloc_count
== 0)
1745 hdr2
= &elf_section_data (target_sect
)->rel_hdr
;
1749 BFD_ASSERT (elf_section_data (target_sect
)->rel_hdr2
== NULL
);
1750 amt
= sizeof (*hdr2
);
1751 hdr2
= (Elf_Internal_Shdr
*) bfd_alloc (abfd
, amt
);
1752 elf_section_data (target_sect
)->rel_hdr2
= hdr2
;
1755 elf_elfsections (abfd
)[shindex
] = hdr2
;
1756 target_sect
->reloc_count
+= NUM_SHDR_ENTRIES (hdr
);
1757 target_sect
->flags
|= SEC_RELOC
;
1758 target_sect
->relocation
= NULL
;
1759 target_sect
->rel_filepos
= hdr
->sh_offset
;
1760 /* In the section to which the relocations apply, mark whether
1761 its relocations are of the REL or RELA variety. */
1762 if (hdr
->sh_size
!= 0)
1763 elf_section_data (target_sect
)->use_rela_p
1764 = (hdr
->sh_type
== SHT_RELA
);
1765 abfd
->flags
|= HAS_RELOC
;
1770 case SHT_GNU_verdef
:
1771 elf_dynverdef (abfd
) = shindex
;
1772 elf_tdata (abfd
)->dynverdef_hdr
= *hdr
;
1773 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1776 case SHT_GNU_versym
:
1777 elf_dynversym (abfd
) = shindex
;
1778 elf_tdata (abfd
)->dynversym_hdr
= *hdr
;
1779 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1782 case SHT_GNU_verneed
:
1783 elf_dynverref (abfd
) = shindex
;
1784 elf_tdata (abfd
)->dynverref_hdr
= *hdr
;
1785 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1792 /* Make a section for objcopy and relocatable links. */
1793 if (!_bfd_elf_make_section_from_shdr (abfd
, hdr
, name
))
1795 if (hdr
->contents
!= NULL
)
1797 Elf_Internal_Group
*idx
= (Elf_Internal_Group
*) hdr
->contents
;
1798 unsigned int n_elt
= hdr
->sh_size
/ 4;
1801 while (--n_elt
!= 0)
1802 if ((s
= (++idx
)->shdr
->bfd_section
) != NULL
1803 && elf_next_in_group (s
) != NULL
)
1805 elf_next_in_group (hdr
->bfd_section
) = s
;
1812 /* Check for any processor-specific section types. */
1814 if (bed
->elf_backend_section_from_shdr
)
1815 (*bed
->elf_backend_section_from_shdr
) (abfd
, hdr
, name
);
1823 /* Return the section for the local symbol specified by ABFD, R_SYMNDX.
1824 Return SEC for sections that have no elf section, and NULL on error. */
1827 bfd_section_from_r_symndx (abfd
, cache
, sec
, r_symndx
)
1829 struct sym_sec_cache
*cache
;
1831 unsigned long r_symndx
;
1833 unsigned char esym_shndx
[4];
1834 unsigned int isym_shndx
;
1835 Elf_Internal_Shdr
*symtab_hdr
;
1838 unsigned int ent
= r_symndx
% LOCAL_SYM_CACHE_SIZE
;
1840 if (cache
->abfd
== abfd
&& cache
->indx
[ent
] == r_symndx
)
1841 return cache
->sec
[ent
];
1843 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1844 pos
= symtab_hdr
->sh_offset
;
1845 if (get_elf_backend_data (abfd
)->s
->sizeof_sym
1846 == sizeof (Elf64_External_Sym
))
1848 pos
+= r_symndx
* sizeof (Elf64_External_Sym
);
1849 pos
+= offsetof (Elf64_External_Sym
, st_shndx
);
1850 amt
= sizeof (((Elf64_External_Sym
*) 0)->st_shndx
);
1854 pos
+= r_symndx
* sizeof (Elf32_External_Sym
);
1855 pos
+= offsetof (Elf32_External_Sym
, st_shndx
);
1856 amt
= sizeof (((Elf32_External_Sym
*) 0)->st_shndx
);
1858 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0
1859 || bfd_bread ((PTR
) esym_shndx
, amt
, abfd
) != amt
)
1861 isym_shndx
= H_GET_16 (abfd
, esym_shndx
);
1863 if (isym_shndx
== SHN_XINDEX
)
1865 Elf_Internal_Shdr
*shndx_hdr
= &elf_tdata (abfd
)->symtab_shndx_hdr
;
1866 if (shndx_hdr
->sh_size
!= 0)
1868 pos
= shndx_hdr
->sh_offset
;
1869 pos
+= r_symndx
* sizeof (Elf_External_Sym_Shndx
);
1870 amt
= sizeof (Elf_External_Sym_Shndx
);
1871 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0
1872 || bfd_bread ((PTR
) esym_shndx
, amt
, abfd
) != amt
)
1874 isym_shndx
= H_GET_32 (abfd
, esym_shndx
);
1878 if (cache
->abfd
!= abfd
)
1880 memset (cache
->indx
, -1, sizeof (cache
->indx
));
1883 cache
->indx
[ent
] = r_symndx
;
1884 cache
->sec
[ent
] = sec
;
1885 if (isym_shndx
< SHN_LORESERVE
|| isym_shndx
> SHN_HIRESERVE
)
1888 s
= bfd_section_from_elf_index (abfd
, isym_shndx
);
1890 cache
->sec
[ent
] = s
;
1892 return cache
->sec
[ent
];
1895 /* Given an ELF section number, retrieve the corresponding BFD
1899 bfd_section_from_elf_index (abfd
, index
)
1903 if (index
>= elf_numsections (abfd
))
1905 return elf_elfsections (abfd
)[index
]->bfd_section
;
1909 _bfd_elf_new_section_hook (abfd
, sec
)
1913 struct bfd_elf_section_data
*sdata
;
1914 bfd_size_type amt
= sizeof (*sdata
);
1916 sdata
= (struct bfd_elf_section_data
*) bfd_zalloc (abfd
, amt
);
1919 sec
->used_by_bfd
= (PTR
) sdata
;
1921 /* Indicate whether or not this section should use RELA relocations. */
1923 = get_elf_backend_data (abfd
)->default_use_rela_p
;
1928 /* Create a new bfd section from an ELF program header.
1930 Since program segments have no names, we generate a synthetic name
1931 of the form segment<NUM>, where NUM is generally the index in the
1932 program header table. For segments that are split (see below) we
1933 generate the names segment<NUM>a and segment<NUM>b.
1935 Note that some program segments may have a file size that is different than
1936 (less than) the memory size. All this means is that at execution the
1937 system must allocate the amount of memory specified by the memory size,
1938 but only initialize it with the first "file size" bytes read from the
1939 file. This would occur for example, with program segments consisting
1940 of combined data+bss.
1942 To handle the above situation, this routine generates TWO bfd sections
1943 for the single program segment. The first has the length specified by
1944 the file size of the segment, and the second has the length specified
1945 by the difference between the two sizes. In effect, the segment is split
1946 into it's initialized and uninitialized parts.
1951 _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, typename
)
1953 Elf_Internal_Phdr
*hdr
;
1955 const char *typename
;
1962 split
= ((hdr
->p_memsz
> 0)
1963 && (hdr
->p_filesz
> 0)
1964 && (hdr
->p_memsz
> hdr
->p_filesz
));
1965 sprintf (namebuf
, "%s%d%s", typename
, index
, split
? "a" : "");
1966 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (namebuf
) + 1);
1969 strcpy (name
, namebuf
);
1970 newsect
= bfd_make_section (abfd
, name
);
1971 if (newsect
== NULL
)
1973 newsect
->vma
= hdr
->p_vaddr
;
1974 newsect
->lma
= hdr
->p_paddr
;
1975 newsect
->_raw_size
= hdr
->p_filesz
;
1976 newsect
->filepos
= hdr
->p_offset
;
1977 newsect
->flags
|= SEC_HAS_CONTENTS
;
1978 if (hdr
->p_type
== PT_LOAD
)
1980 newsect
->flags
|= SEC_ALLOC
;
1981 newsect
->flags
|= SEC_LOAD
;
1982 if (hdr
->p_flags
& PF_X
)
1984 /* FIXME: all we known is that it has execute PERMISSION,
1986 newsect
->flags
|= SEC_CODE
;
1989 if (!(hdr
->p_flags
& PF_W
))
1991 newsect
->flags
|= SEC_READONLY
;
1996 sprintf (namebuf
, "%s%db", typename
, index
);
1997 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (namebuf
) + 1);
2000 strcpy (name
, namebuf
);
2001 newsect
= bfd_make_section (abfd
, name
);
2002 if (newsect
== NULL
)
2004 newsect
->vma
= hdr
->p_vaddr
+ hdr
->p_filesz
;
2005 newsect
->lma
= hdr
->p_paddr
+ hdr
->p_filesz
;
2006 newsect
->_raw_size
= hdr
->p_memsz
- hdr
->p_filesz
;
2007 if (hdr
->p_type
== PT_LOAD
)
2009 newsect
->flags
|= SEC_ALLOC
;
2010 if (hdr
->p_flags
& PF_X
)
2011 newsect
->flags
|= SEC_CODE
;
2013 if (!(hdr
->p_flags
& PF_W
))
2014 newsect
->flags
|= SEC_READONLY
;
2021 bfd_section_from_phdr (abfd
, hdr
, index
)
2023 Elf_Internal_Phdr
*hdr
;
2026 struct elf_backend_data
*bed
;
2028 switch (hdr
->p_type
)
2031 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "null");
2034 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "load");
2037 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "dynamic");
2040 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "interp");
2043 if (! _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "note"))
2045 if (! elfcore_read_notes (abfd
, (file_ptr
) hdr
->p_offset
, hdr
->p_filesz
))
2050 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "shlib");
2053 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "phdr");
2056 /* Check for any processor-specific program segment types.
2057 If no handler for them, default to making "segment" sections. */
2058 bed
= get_elf_backend_data (abfd
);
2059 if (bed
->elf_backend_section_from_phdr
)
2060 return (*bed
->elf_backend_section_from_phdr
) (abfd
, hdr
, index
);
2062 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "segment");
2066 /* Initialize REL_HDR, the section-header for new section, containing
2067 relocations against ASECT. If USE_RELA_P is true, we use RELA
2068 relocations; otherwise, we use REL relocations. */
2071 _bfd_elf_init_reloc_shdr (abfd
, rel_hdr
, asect
, use_rela_p
)
2073 Elf_Internal_Shdr
*rel_hdr
;
2078 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2079 bfd_size_type amt
= sizeof ".rela" + strlen (asect
->name
);
2081 name
= bfd_alloc (abfd
, amt
);
2084 sprintf (name
, "%s%s", use_rela_p
? ".rela" : ".rel", asect
->name
);
2086 (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd
), name
,
2088 if (rel_hdr
->sh_name
== (unsigned int) -1)
2090 rel_hdr
->sh_type
= use_rela_p
? SHT_RELA
: SHT_REL
;
2091 rel_hdr
->sh_entsize
= (use_rela_p
2092 ? bed
->s
->sizeof_rela
2093 : bed
->s
->sizeof_rel
);
2094 rel_hdr
->sh_addralign
= bed
->s
->file_align
;
2095 rel_hdr
->sh_flags
= 0;
2096 rel_hdr
->sh_addr
= 0;
2097 rel_hdr
->sh_size
= 0;
2098 rel_hdr
->sh_offset
= 0;
2103 /* Set up an ELF internal section header for a section. */
2106 elf_fake_sections (abfd
, asect
, failedptrarg
)
2111 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2112 boolean
*failedptr
= (boolean
*) failedptrarg
;
2113 Elf_Internal_Shdr
*this_hdr
;
2117 /* We already failed; just get out of the bfd_map_over_sections
2122 this_hdr
= &elf_section_data (asect
)->this_hdr
;
2124 this_hdr
->sh_name
= (unsigned long) _bfd_elf_strtab_add (elf_shstrtab (abfd
),
2125 asect
->name
, false);
2126 if (this_hdr
->sh_name
== (unsigned long) -1)
2132 this_hdr
->sh_flags
= 0;
2134 if ((asect
->flags
& SEC_ALLOC
) != 0
2135 || asect
->user_set_vma
)
2136 this_hdr
->sh_addr
= asect
->vma
;
2138 this_hdr
->sh_addr
= 0;
2140 this_hdr
->sh_offset
= 0;
2141 this_hdr
->sh_size
= asect
->_raw_size
;
2142 this_hdr
->sh_link
= 0;
2143 this_hdr
->sh_addralign
= 1 << asect
->alignment_power
;
2144 /* The sh_entsize and sh_info fields may have been set already by
2145 copy_private_section_data. */
2147 this_hdr
->bfd_section
= asect
;
2148 this_hdr
->contents
= NULL
;
2150 /* FIXME: This should not be based on section names. */
2151 if (strcmp (asect
->name
, ".dynstr") == 0)
2152 this_hdr
->sh_type
= SHT_STRTAB
;
2153 else if (strcmp (asect
->name
, ".hash") == 0)
2155 this_hdr
->sh_type
= SHT_HASH
;
2156 this_hdr
->sh_entsize
= bed
->s
->sizeof_hash_entry
;
2158 else if (strcmp (asect
->name
, ".dynsym") == 0)
2160 this_hdr
->sh_type
= SHT_DYNSYM
;
2161 this_hdr
->sh_entsize
= bed
->s
->sizeof_sym
;
2163 else if (strcmp (asect
->name
, ".dynamic") == 0)
2165 this_hdr
->sh_type
= SHT_DYNAMIC
;
2166 this_hdr
->sh_entsize
= bed
->s
->sizeof_dyn
;
2168 else if (strncmp (asect
->name
, ".rela", 5) == 0
2169 && get_elf_backend_data (abfd
)->may_use_rela_p
)
2171 this_hdr
->sh_type
= SHT_RELA
;
2172 this_hdr
->sh_entsize
= bed
->s
->sizeof_rela
;
2174 else if (strncmp (asect
->name
, ".rel", 4) == 0
2175 && get_elf_backend_data (abfd
)->may_use_rel_p
)
2177 this_hdr
->sh_type
= SHT_REL
;
2178 this_hdr
->sh_entsize
= bed
->s
->sizeof_rel
;
2180 else if (strncmp (asect
->name
, ".note", 5) == 0)
2181 this_hdr
->sh_type
= SHT_NOTE
;
2182 else if (strncmp (asect
->name
, ".stab", 5) == 0
2183 && strcmp (asect
->name
+ strlen (asect
->name
) - 3, "str") == 0)
2184 this_hdr
->sh_type
= SHT_STRTAB
;
2185 else if (strcmp (asect
->name
, ".gnu.version") == 0)
2187 this_hdr
->sh_type
= SHT_GNU_versym
;
2188 this_hdr
->sh_entsize
= sizeof (Elf_External_Versym
);
2190 else if (strcmp (asect
->name
, ".gnu.version_d") == 0)
2192 this_hdr
->sh_type
= SHT_GNU_verdef
;
2193 this_hdr
->sh_entsize
= 0;
2194 /* objcopy or strip will copy over sh_info, but may not set
2195 cverdefs. The linker will set cverdefs, but sh_info will be
2197 if (this_hdr
->sh_info
== 0)
2198 this_hdr
->sh_info
= elf_tdata (abfd
)->cverdefs
;
2200 BFD_ASSERT (elf_tdata (abfd
)->cverdefs
== 0
2201 || this_hdr
->sh_info
== elf_tdata (abfd
)->cverdefs
);
2203 else if (strcmp (asect
->name
, ".gnu.version_r") == 0)
2205 this_hdr
->sh_type
= SHT_GNU_verneed
;
2206 this_hdr
->sh_entsize
= 0;
2207 /* objcopy or strip will copy over sh_info, but may not set
2208 cverrefs. The linker will set cverrefs, but sh_info will be
2210 if (this_hdr
->sh_info
== 0)
2211 this_hdr
->sh_info
= elf_tdata (abfd
)->cverrefs
;
2213 BFD_ASSERT (elf_tdata (abfd
)->cverrefs
== 0
2214 || this_hdr
->sh_info
== elf_tdata (abfd
)->cverrefs
);
2216 else if ((asect
->flags
& SEC_GROUP
) != 0)
2218 this_hdr
->sh_type
= SHT_GROUP
;
2219 this_hdr
->sh_entsize
= 4;
2221 else if ((asect
->flags
& SEC_ALLOC
) != 0
2222 && ((asect
->flags
& (SEC_LOAD
| SEC_HAS_CONTENTS
)) == 0))
2223 this_hdr
->sh_type
= SHT_NOBITS
;
2225 this_hdr
->sh_type
= SHT_PROGBITS
;
2227 if ((asect
->flags
& SEC_ALLOC
) != 0)
2228 this_hdr
->sh_flags
|= SHF_ALLOC
;
2229 if ((asect
->flags
& SEC_READONLY
) == 0)
2230 this_hdr
->sh_flags
|= SHF_WRITE
;
2231 if ((asect
->flags
& SEC_CODE
) != 0)
2232 this_hdr
->sh_flags
|= SHF_EXECINSTR
;
2233 if ((asect
->flags
& SEC_MERGE
) != 0)
2235 this_hdr
->sh_flags
|= SHF_MERGE
;
2236 this_hdr
->sh_entsize
= asect
->entsize
;
2237 if ((asect
->flags
& SEC_STRINGS
) != 0)
2238 this_hdr
->sh_flags
|= SHF_STRINGS
;
2240 if (elf_group_name (asect
) != NULL
)
2241 this_hdr
->sh_flags
|= SHF_GROUP
;
2243 /* Check for processor-specific section types. */
2244 if (bed
->elf_backend_fake_sections
2245 && !(*bed
->elf_backend_fake_sections
) (abfd
, this_hdr
, asect
))
2248 /* If the section has relocs, set up a section header for the
2249 SHT_REL[A] section. If two relocation sections are required for
2250 this section, it is up to the processor-specific back-end to
2251 create the other. */
2252 if ((asect
->flags
& SEC_RELOC
) != 0
2253 && !_bfd_elf_init_reloc_shdr (abfd
,
2254 &elf_section_data (asect
)->rel_hdr
,
2256 elf_section_data (asect
)->use_rela_p
))
2260 /* Fill in the contents of a SHT_GROUP section. */
2263 set_group_contents (abfd
, sec
, failedptrarg
)
2266 PTR failedptrarg ATTRIBUTE_UNUSED
;
2268 boolean
*failedptr
= (boolean
*) failedptrarg
;
2269 unsigned long symindx
;
2272 struct bfd_link_order
*l
;
2274 if (elf_section_data (sec
)->this_hdr
.sh_type
!= SHT_GROUP
2278 /* If called from the assembler, swap_out_syms will have set up
2279 elf_section_syms; If called for "ld -r", the symbols won't yet
2280 be mapped, so emulate elf_bfd_final_link. */
2281 if (elf_section_syms (abfd
) != NULL
)
2282 symindx
= elf_section_syms (abfd
)[sec
->index
]->udata
.i
;
2284 symindx
= elf_section_data (sec
)->this_idx
;
2285 elf_section_data (sec
)->this_hdr
.sh_info
= symindx
;
2287 /* Nor will the contents be allocated for "ld -r". */
2288 if (sec
->contents
== NULL
)
2290 sec
->contents
= bfd_alloc (abfd
, sec
->_raw_size
);
2291 if (sec
->contents
== NULL
)
2298 loc
= sec
->contents
+ sec
->_raw_size
;
2300 /* Get the pointer to the first section in the group that we
2301 squirreled away here. */
2302 elt
= elf_next_in_group (sec
);
2304 /* First element is a flag word. Rest of section is elf section
2305 indices for all the sections of the group. Write them backwards
2306 just to keep the group in the same order as given in .section
2307 directives, not that it matters. */
2311 H_PUT_32 (abfd
, elf_section_data (elt
)->this_idx
, loc
);
2312 elt
= elf_next_in_group (elt
);
2315 /* If this is a relocatable link, then the above did nothing because
2316 SEC is the output section. Look through the input sections
2318 for (l
= sec
->link_order_head
; l
!= NULL
; l
= l
->next
)
2319 if (l
->type
== bfd_indirect_link_order
2320 && (elt
= elf_next_in_group (l
->u
.indirect
.section
)) != NULL
)
2325 elf_section_data (elt
->output_section
)->this_idx
, loc
);
2326 elt
= elf_next_in_group (elt
);
2327 /* During a relocatable link, the lists are circular. */
2329 while (elt
!= elf_next_in_group (l
->u
.indirect
.section
));
2332 H_PUT_32 (abfd
, 0, loc
);
2334 BFD_ASSERT (loc
== sec
->contents
);
2337 /* Assign all ELF section numbers. The dummy first section is handled here
2338 too. The link/info pointers for the standard section types are filled
2339 in here too, while we're at it. */
2342 assign_section_numbers (abfd
)
2345 struct elf_obj_tdata
*t
= elf_tdata (abfd
);
2347 unsigned int section_number
, secn
;
2348 Elf_Internal_Shdr
**i_shdrp
;
2353 _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd
));
2355 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
2357 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
2359 if (section_number
== SHN_LORESERVE
)
2360 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2361 d
->this_idx
= section_number
++;
2362 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), d
->this_hdr
.sh_name
);
2363 if ((sec
->flags
& SEC_RELOC
) == 0)
2367 if (section_number
== SHN_LORESERVE
)
2368 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2369 d
->rel_idx
= section_number
++;
2370 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), d
->rel_hdr
.sh_name
);
2375 if (section_number
== SHN_LORESERVE
)
2376 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2377 d
->rel_idx2
= section_number
++;
2378 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), d
->rel_hdr2
->sh_name
);
2384 if (section_number
== SHN_LORESERVE
)
2385 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2386 t
->shstrtab_section
= section_number
++;
2387 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), t
->shstrtab_hdr
.sh_name
);
2388 elf_elfheader (abfd
)->e_shstrndx
= t
->shstrtab_section
;
2390 if (bfd_get_symcount (abfd
) > 0)
2392 if (section_number
== SHN_LORESERVE
)
2393 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2394 t
->symtab_section
= section_number
++;
2395 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), t
->symtab_hdr
.sh_name
);
2396 if (section_number
> SHN_LORESERVE
- 2)
2398 if (section_number
== SHN_LORESERVE
)
2399 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2400 t
->symtab_shndx_section
= section_number
++;
2401 t
->symtab_shndx_hdr
.sh_name
2402 = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd
),
2403 ".symtab_shndx", false);
2404 if (t
->symtab_shndx_hdr
.sh_name
== (unsigned int) -1)
2407 if (section_number
== SHN_LORESERVE
)
2408 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2409 t
->strtab_section
= section_number
++;
2410 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), t
->strtab_hdr
.sh_name
);
2413 _bfd_elf_strtab_finalize (elf_shstrtab (abfd
));
2414 t
->shstrtab_hdr
.sh_size
= _bfd_elf_strtab_size (elf_shstrtab (abfd
));
2416 elf_numsections (abfd
) = section_number
;
2417 elf_elfheader (abfd
)->e_shnum
= section_number
;
2418 if (section_number
> SHN_LORESERVE
)
2419 elf_elfheader (abfd
)->e_shnum
-= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2421 /* Set up the list of section header pointers, in agreement with the
2423 amt
= section_number
* sizeof (Elf_Internal_Shdr
*);
2424 i_shdrp
= (Elf_Internal_Shdr
**) bfd_alloc (abfd
, amt
);
2425 if (i_shdrp
== NULL
)
2428 amt
= sizeof (Elf_Internal_Shdr
);
2429 i_shdrp
[0] = (Elf_Internal_Shdr
*) bfd_alloc (abfd
, amt
);
2430 if (i_shdrp
[0] == NULL
)
2432 bfd_release (abfd
, i_shdrp
);
2435 memset (i_shdrp
[0], 0, sizeof (Elf_Internal_Shdr
));
2437 elf_elfsections (abfd
) = i_shdrp
;
2439 i_shdrp
[t
->shstrtab_section
] = &t
->shstrtab_hdr
;
2440 if (bfd_get_symcount (abfd
) > 0)
2442 i_shdrp
[t
->symtab_section
] = &t
->symtab_hdr
;
2443 if (elf_numsections (abfd
) > SHN_LORESERVE
)
2445 i_shdrp
[t
->symtab_shndx_section
] = &t
->symtab_shndx_hdr
;
2446 t
->symtab_shndx_hdr
.sh_link
= t
->symtab_section
;
2448 i_shdrp
[t
->strtab_section
] = &t
->strtab_hdr
;
2449 t
->symtab_hdr
.sh_link
= t
->strtab_section
;
2451 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
2453 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
2457 i_shdrp
[d
->this_idx
] = &d
->this_hdr
;
2458 if (d
->rel_idx
!= 0)
2459 i_shdrp
[d
->rel_idx
] = &d
->rel_hdr
;
2460 if (d
->rel_idx2
!= 0)
2461 i_shdrp
[d
->rel_idx2
] = d
->rel_hdr2
;
2463 /* Fill in the sh_link and sh_info fields while we're at it. */
2465 /* sh_link of a reloc section is the section index of the symbol
2466 table. sh_info is the section index of the section to which
2467 the relocation entries apply. */
2468 if (d
->rel_idx
!= 0)
2470 d
->rel_hdr
.sh_link
= t
->symtab_section
;
2471 d
->rel_hdr
.sh_info
= d
->this_idx
;
2473 if (d
->rel_idx2
!= 0)
2475 d
->rel_hdr2
->sh_link
= t
->symtab_section
;
2476 d
->rel_hdr2
->sh_info
= d
->this_idx
;
2479 switch (d
->this_hdr
.sh_type
)
2483 /* A reloc section which we are treating as a normal BFD
2484 section. sh_link is the section index of the symbol
2485 table. sh_info is the section index of the section to
2486 which the relocation entries apply. We assume that an
2487 allocated reloc section uses the dynamic symbol table.
2488 FIXME: How can we be sure? */
2489 s
= bfd_get_section_by_name (abfd
, ".dynsym");
2491 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
2493 /* We look up the section the relocs apply to by name. */
2495 if (d
->this_hdr
.sh_type
== SHT_REL
)
2499 s
= bfd_get_section_by_name (abfd
, name
);
2501 d
->this_hdr
.sh_info
= elf_section_data (s
)->this_idx
;
2505 /* We assume that a section named .stab*str is a stabs
2506 string section. We look for a section with the same name
2507 but without the trailing ``str'', and set its sh_link
2508 field to point to this section. */
2509 if (strncmp (sec
->name
, ".stab", sizeof ".stab" - 1) == 0
2510 && strcmp (sec
->name
+ strlen (sec
->name
) - 3, "str") == 0)
2515 len
= strlen (sec
->name
);
2516 alc
= (char *) bfd_malloc ((bfd_size_type
) len
- 2);
2519 strncpy (alc
, sec
->name
, len
- 3);
2520 alc
[len
- 3] = '\0';
2521 s
= bfd_get_section_by_name (abfd
, alc
);
2525 elf_section_data (s
)->this_hdr
.sh_link
= d
->this_idx
;
2527 /* This is a .stab section. */
2528 elf_section_data (s
)->this_hdr
.sh_entsize
=
2529 4 + 2 * bfd_get_arch_size (abfd
) / 8;
2536 case SHT_GNU_verneed
:
2537 case SHT_GNU_verdef
:
2538 /* sh_link is the section header index of the string table
2539 used for the dynamic entries, or the symbol table, or the
2541 s
= bfd_get_section_by_name (abfd
, ".dynstr");
2543 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
2547 case SHT_GNU_versym
:
2548 /* sh_link is the section header index of the symbol table
2549 this hash table or version table is for. */
2550 s
= bfd_get_section_by_name (abfd
, ".dynsym");
2552 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
2556 d
->this_hdr
.sh_link
= t
->symtab_section
;
2560 for (secn
= 1; secn
< section_number
; ++secn
)
2561 if (i_shdrp
[secn
] == NULL
)
2562 i_shdrp
[secn
] = i_shdrp
[0];
2564 i_shdrp
[secn
]->sh_name
= _bfd_elf_strtab_offset (elf_shstrtab (abfd
),
2565 i_shdrp
[secn
]->sh_name
);
2569 /* Map symbol from it's internal number to the external number, moving
2570 all local symbols to be at the head of the list. */
2573 sym_is_global (abfd
, sym
)
2577 /* If the backend has a special mapping, use it. */
2578 if (get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
2579 return ((*get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
2582 return ((sym
->flags
& (BSF_GLOBAL
| BSF_WEAK
)) != 0
2583 || bfd_is_und_section (bfd_get_section (sym
))
2584 || bfd_is_com_section (bfd_get_section (sym
)));
2588 elf_map_symbols (abfd
)
2591 unsigned int symcount
= bfd_get_symcount (abfd
);
2592 asymbol
**syms
= bfd_get_outsymbols (abfd
);
2593 asymbol
**sect_syms
;
2594 unsigned int num_locals
= 0;
2595 unsigned int num_globals
= 0;
2596 unsigned int num_locals2
= 0;
2597 unsigned int num_globals2
= 0;
2605 fprintf (stderr
, "elf_map_symbols\n");
2609 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2611 if (max_index
< asect
->index
)
2612 max_index
= asect
->index
;
2616 amt
= max_index
* sizeof (asymbol
*);
2617 sect_syms
= (asymbol
**) bfd_zalloc (abfd
, amt
);
2618 if (sect_syms
== NULL
)
2620 elf_section_syms (abfd
) = sect_syms
;
2621 elf_num_section_syms (abfd
) = max_index
;
2623 /* Init sect_syms entries for any section symbols we have already
2624 decided to output. */
2625 for (idx
= 0; idx
< symcount
; idx
++)
2627 asymbol
*sym
= syms
[idx
];
2629 if ((sym
->flags
& BSF_SECTION_SYM
) != 0
2636 if (sec
->owner
!= NULL
)
2638 if (sec
->owner
!= abfd
)
2640 if (sec
->output_offset
!= 0)
2643 sec
= sec
->output_section
;
2645 /* Empty sections in the input files may have had a
2646 section symbol created for them. (See the comment
2647 near the end of _bfd_generic_link_output_symbols in
2648 linker.c). If the linker script discards such
2649 sections then we will reach this point. Since we know
2650 that we cannot avoid this case, we detect it and skip
2651 the abort and the assignment to the sect_syms array.
2652 To reproduce this particular case try running the
2653 linker testsuite test ld-scripts/weak.exp for an ELF
2654 port that uses the generic linker. */
2655 if (sec
->owner
== NULL
)
2658 BFD_ASSERT (sec
->owner
== abfd
);
2660 sect_syms
[sec
->index
] = syms
[idx
];
2665 /* Classify all of the symbols. */
2666 for (idx
= 0; idx
< symcount
; idx
++)
2668 if (!sym_is_global (abfd
, syms
[idx
]))
2674 /* We will be adding a section symbol for each BFD section. Most normal
2675 sections will already have a section symbol in outsymbols, but
2676 eg. SHT_GROUP sections will not, and we need the section symbol mapped
2677 at least in that case. */
2678 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2680 if (sect_syms
[asect
->index
] == NULL
)
2682 if (!sym_is_global (abfd
, asect
->symbol
))
2689 /* Now sort the symbols so the local symbols are first. */
2690 amt
= (num_locals
+ num_globals
) * sizeof (asymbol
*);
2691 new_syms
= (asymbol
**) bfd_alloc (abfd
, amt
);
2693 if (new_syms
== NULL
)
2696 for (idx
= 0; idx
< symcount
; idx
++)
2698 asymbol
*sym
= syms
[idx
];
2701 if (!sym_is_global (abfd
, sym
))
2704 i
= num_locals
+ num_globals2
++;
2706 sym
->udata
.i
= i
+ 1;
2708 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2710 if (sect_syms
[asect
->index
] == NULL
)
2712 asymbol
*sym
= asect
->symbol
;
2715 sect_syms
[asect
->index
] = sym
;
2716 if (!sym_is_global (abfd
, sym
))
2719 i
= num_locals
+ num_globals2
++;
2721 sym
->udata
.i
= i
+ 1;
2725 bfd_set_symtab (abfd
, new_syms
, num_locals
+ num_globals
);
2727 elf_num_locals (abfd
) = num_locals
;
2728 elf_num_globals (abfd
) = num_globals
;
2732 /* Align to the maximum file alignment that could be required for any
2733 ELF data structure. */
2735 static INLINE file_ptr align_file_position
PARAMS ((file_ptr
, int));
2736 static INLINE file_ptr
2737 align_file_position (off
, align
)
2741 return (off
+ align
- 1) & ~(align
- 1);
2744 /* Assign a file position to a section, optionally aligning to the
2745 required section alignment. */
2748 _bfd_elf_assign_file_position_for_section (i_shdrp
, offset
, align
)
2749 Elf_Internal_Shdr
*i_shdrp
;
2757 al
= i_shdrp
->sh_addralign
;
2759 offset
= BFD_ALIGN (offset
, al
);
2761 i_shdrp
->sh_offset
= offset
;
2762 if (i_shdrp
->bfd_section
!= NULL
)
2763 i_shdrp
->bfd_section
->filepos
= offset
;
2764 if (i_shdrp
->sh_type
!= SHT_NOBITS
)
2765 offset
+= i_shdrp
->sh_size
;
2769 /* Compute the file positions we are going to put the sections at, and
2770 otherwise prepare to begin writing out the ELF file. If LINK_INFO
2771 is not NULL, this is being called by the ELF backend linker. */
2774 _bfd_elf_compute_section_file_positions (abfd
, link_info
)
2776 struct bfd_link_info
*link_info
;
2778 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2780 struct bfd_strtab_hash
*strtab
;
2781 Elf_Internal_Shdr
*shstrtab_hdr
;
2783 if (abfd
->output_has_begun
)
2786 /* Do any elf backend specific processing first. */
2787 if (bed
->elf_backend_begin_write_processing
)
2788 (*bed
->elf_backend_begin_write_processing
) (abfd
, link_info
);
2790 if (! prep_headers (abfd
))
2793 /* Post process the headers if necessary. */
2794 if (bed
->elf_backend_post_process_headers
)
2795 (*bed
->elf_backend_post_process_headers
) (abfd
, link_info
);
2798 bfd_map_over_sections (abfd
, elf_fake_sections
, &failed
);
2802 if (!assign_section_numbers (abfd
))
2805 /* The backend linker builds symbol table information itself. */
2806 if (link_info
== NULL
&& bfd_get_symcount (abfd
) > 0)
2808 /* Non-zero if doing a relocatable link. */
2809 int relocatable_p
= ! (abfd
->flags
& (EXEC_P
| DYNAMIC
));
2811 if (! swap_out_syms (abfd
, &strtab
, relocatable_p
))
2815 if (link_info
== NULL
|| link_info
->relocateable
)
2817 bfd_map_over_sections (abfd
, set_group_contents
, &failed
);
2822 shstrtab_hdr
= &elf_tdata (abfd
)->shstrtab_hdr
;
2823 /* sh_name was set in prep_headers. */
2824 shstrtab_hdr
->sh_type
= SHT_STRTAB
;
2825 shstrtab_hdr
->sh_flags
= 0;
2826 shstrtab_hdr
->sh_addr
= 0;
2827 shstrtab_hdr
->sh_size
= _bfd_elf_strtab_size (elf_shstrtab (abfd
));
2828 shstrtab_hdr
->sh_entsize
= 0;
2829 shstrtab_hdr
->sh_link
= 0;
2830 shstrtab_hdr
->sh_info
= 0;
2831 /* sh_offset is set in assign_file_positions_except_relocs. */
2832 shstrtab_hdr
->sh_addralign
= 1;
2834 if (!assign_file_positions_except_relocs (abfd
))
2837 if (link_info
== NULL
&& bfd_get_symcount (abfd
) > 0)
2840 Elf_Internal_Shdr
*hdr
;
2842 off
= elf_tdata (abfd
)->next_file_pos
;
2844 hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2845 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
2847 hdr
= &elf_tdata (abfd
)->symtab_shndx_hdr
;
2848 if (hdr
->sh_size
!= 0)
2849 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
2851 hdr
= &elf_tdata (abfd
)->strtab_hdr
;
2852 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
2854 elf_tdata (abfd
)->next_file_pos
= off
;
2856 /* Now that we know where the .strtab section goes, write it
2858 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
2859 || ! _bfd_stringtab_emit (abfd
, strtab
))
2861 _bfd_stringtab_free (strtab
);
2864 abfd
->output_has_begun
= true;
2869 /* Create a mapping from a set of sections to a program segment. */
2871 static INLINE
struct elf_segment_map
*
2872 make_mapping (abfd
, sections
, from
, to
, phdr
)
2874 asection
**sections
;
2879 struct elf_segment_map
*m
;
2884 amt
= sizeof (struct elf_segment_map
);
2885 amt
+= (to
- from
- 1) * sizeof (asection
*);
2886 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2890 m
->p_type
= PT_LOAD
;
2891 for (i
= from
, hdrpp
= sections
+ from
; i
< to
; i
++, hdrpp
++)
2892 m
->sections
[i
- from
] = *hdrpp
;
2893 m
->count
= to
- from
;
2895 if (from
== 0 && phdr
)
2897 /* Include the headers in the first PT_LOAD segment. */
2898 m
->includes_filehdr
= 1;
2899 m
->includes_phdrs
= 1;
2905 /* Set up a mapping from BFD sections to program segments. */
2908 map_sections_to_segments (abfd
)
2911 asection
**sections
= NULL
;
2915 struct elf_segment_map
*mfirst
;
2916 struct elf_segment_map
**pm
;
2917 struct elf_segment_map
*m
;
2919 unsigned int phdr_index
;
2920 bfd_vma maxpagesize
;
2922 boolean phdr_in_segment
= true;
2924 asection
*dynsec
, *eh_frame_hdr
;
2927 if (elf_tdata (abfd
)->segment_map
!= NULL
)
2930 if (bfd_count_sections (abfd
) == 0)
2933 /* Select the allocated sections, and sort them. */
2935 amt
= bfd_count_sections (abfd
) * sizeof (asection
*);
2936 sections
= (asection
**) bfd_malloc (amt
);
2937 if (sections
== NULL
)
2941 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
2943 if ((s
->flags
& SEC_ALLOC
) != 0)
2949 BFD_ASSERT (i
<= bfd_count_sections (abfd
));
2952 qsort (sections
, (size_t) count
, sizeof (asection
*), elf_sort_sections
);
2954 /* Build the mapping. */
2959 /* If we have a .interp section, then create a PT_PHDR segment for
2960 the program headers and a PT_INTERP segment for the .interp
2962 s
= bfd_get_section_by_name (abfd
, ".interp");
2963 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
2965 amt
= sizeof (struct elf_segment_map
);
2966 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2970 m
->p_type
= PT_PHDR
;
2971 /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */
2972 m
->p_flags
= PF_R
| PF_X
;
2973 m
->p_flags_valid
= 1;
2974 m
->includes_phdrs
= 1;
2979 amt
= sizeof (struct elf_segment_map
);
2980 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2984 m
->p_type
= PT_INTERP
;
2992 /* Look through the sections. We put sections in the same program
2993 segment when the start of the second section can be placed within
2994 a few bytes of the end of the first section. */
2997 maxpagesize
= get_elf_backend_data (abfd
)->maxpagesize
;
2999 dynsec
= bfd_get_section_by_name (abfd
, ".dynamic");
3001 && (dynsec
->flags
& SEC_LOAD
) == 0)
3004 /* Deal with -Ttext or something similar such that the first section
3005 is not adjacent to the program headers. This is an
3006 approximation, since at this point we don't know exactly how many
3007 program headers we will need. */
3010 bfd_size_type phdr_size
;
3012 phdr_size
= elf_tdata (abfd
)->program_header_size
;
3014 phdr_size
= get_elf_backend_data (abfd
)->s
->sizeof_phdr
;
3015 if ((abfd
->flags
& D_PAGED
) == 0
3016 || sections
[0]->lma
< phdr_size
3017 || sections
[0]->lma
% maxpagesize
< phdr_size
% maxpagesize
)
3018 phdr_in_segment
= false;
3021 for (i
= 0, hdrpp
= sections
; i
< count
; i
++, hdrpp
++)
3024 boolean new_segment
;
3028 /* See if this section and the last one will fit in the same
3031 if (last_hdr
== NULL
)
3033 /* If we don't have a segment yet, then we don't need a new
3034 one (we build the last one after this loop). */
3035 new_segment
= false;
3037 else if (last_hdr
->lma
- last_hdr
->vma
!= hdr
->lma
- hdr
->vma
)
3039 /* If this section has a different relation between the
3040 virtual address and the load address, then we need a new
3044 else if (BFD_ALIGN (last_hdr
->lma
+ last_hdr
->_raw_size
, maxpagesize
)
3045 < BFD_ALIGN (hdr
->lma
, maxpagesize
))
3047 /* If putting this section in this segment would force us to
3048 skip a page in the segment, then we need a new segment. */
3051 else if ((last_hdr
->flags
& SEC_LOAD
) == 0
3052 && (hdr
->flags
& SEC_LOAD
) != 0)
3054 /* We don't want to put a loadable section after a
3055 nonloadable section in the same segment. */
3058 else if ((abfd
->flags
& D_PAGED
) == 0)
3060 /* If the file is not demand paged, which means that we
3061 don't require the sections to be correctly aligned in the
3062 file, then there is no other reason for a new segment. */
3063 new_segment
= false;
3066 && (hdr
->flags
& SEC_READONLY
) == 0
3067 && (BFD_ALIGN (last_hdr
->lma
+ last_hdr
->_raw_size
, maxpagesize
)
3070 /* We don't want to put a writable section in a read only
3071 segment, unless they are on the same page in memory
3072 anyhow. We already know that the last section does not
3073 bring us past the current section on the page, so the
3074 only case in which the new section is not on the same
3075 page as the previous section is when the previous section
3076 ends precisely on a page boundary. */
3081 /* Otherwise, we can use the same segment. */
3082 new_segment
= false;
3087 if ((hdr
->flags
& SEC_READONLY
) == 0)
3093 /* We need a new program segment. We must create a new program
3094 header holding all the sections from phdr_index until hdr. */
3096 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_segment
);
3103 if ((hdr
->flags
& SEC_READONLY
) == 0)
3110 phdr_in_segment
= false;
3113 /* Create a final PT_LOAD program segment. */
3114 if (last_hdr
!= NULL
)
3116 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_segment
);
3124 /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */
3127 amt
= sizeof (struct elf_segment_map
);
3128 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
3132 m
->p_type
= PT_DYNAMIC
;
3134 m
->sections
[0] = dynsec
;
3140 /* For each loadable .note section, add a PT_NOTE segment. We don't
3141 use bfd_get_section_by_name, because if we link together
3142 nonloadable .note sections and loadable .note sections, we will
3143 generate two .note sections in the output file. FIXME: Using
3144 names for section types is bogus anyhow. */
3145 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
3147 if ((s
->flags
& SEC_LOAD
) != 0
3148 && strncmp (s
->name
, ".note", 5) == 0)
3150 amt
= sizeof (struct elf_segment_map
);
3151 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
3155 m
->p_type
= PT_NOTE
;
3164 /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME
3166 eh_frame_hdr
= NULL
;
3167 if (elf_tdata (abfd
)->eh_frame_hdr
)
3168 eh_frame_hdr
= bfd_get_section_by_name (abfd
, ".eh_frame_hdr");
3169 if (eh_frame_hdr
!= NULL
&& (eh_frame_hdr
->flags
& SEC_LOAD
))
3171 amt
= sizeof (struct elf_segment_map
);
3172 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
3176 m
->p_type
= PT_GNU_EH_FRAME
;
3178 m
->sections
[0] = eh_frame_hdr
;
3187 elf_tdata (abfd
)->segment_map
= mfirst
;
3191 if (sections
!= NULL
)
3196 /* Sort sections by address. */
3199 elf_sort_sections (arg1
, arg2
)
3203 const asection
*sec1
= *(const asection
**) arg1
;
3204 const asection
*sec2
= *(const asection
**) arg2
;
3206 /* Sort by LMA first, since this is the address used to
3207 place the section into a segment. */
3208 if (sec1
->lma
< sec2
->lma
)
3210 else if (sec1
->lma
> sec2
->lma
)
3213 /* Then sort by VMA. Normally the LMA and the VMA will be
3214 the same, and this will do nothing. */
3215 if (sec1
->vma
< sec2
->vma
)
3217 else if (sec1
->vma
> sec2
->vma
)
3220 /* Put !SEC_LOAD sections after SEC_LOAD ones. */
3222 #define TOEND(x) (((x)->flags & SEC_LOAD) == 0)
3228 /* If the indicies are the same, do not return 0
3229 here, but continue to try the next comparison. */
3230 if (sec1
->target_index
- sec2
->target_index
!= 0)
3231 return sec1
->target_index
- sec2
->target_index
;
3236 else if (TOEND (sec2
))
3241 /* Sort by size, to put zero sized sections
3242 before others at the same address. */
3244 if (sec1
->_raw_size
< sec2
->_raw_size
)
3246 if (sec1
->_raw_size
> sec2
->_raw_size
)
3249 return sec1
->target_index
- sec2
->target_index
;
3252 /* Assign file positions to the sections based on the mapping from
3253 sections to segments. This function also sets up some fields in
3254 the file header, and writes out the program headers. */
3257 assign_file_positions_for_segments (abfd
)
3260 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3262 struct elf_segment_map
*m
;
3264 Elf_Internal_Phdr
*phdrs
;
3266 bfd_vma filehdr_vaddr
, filehdr_paddr
;
3267 bfd_vma phdrs_vaddr
, phdrs_paddr
;
3268 Elf_Internal_Phdr
*p
;
3271 if (elf_tdata (abfd
)->segment_map
== NULL
)
3273 if (! map_sections_to_segments (abfd
))
3277 if (bed
->elf_backend_modify_segment_map
)
3279 if (! (*bed
->elf_backend_modify_segment_map
) (abfd
))
3284 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
3287 elf_elfheader (abfd
)->e_phoff
= bed
->s
->sizeof_ehdr
;
3288 elf_elfheader (abfd
)->e_phentsize
= bed
->s
->sizeof_phdr
;
3289 elf_elfheader (abfd
)->e_phnum
= count
;
3294 /* If we already counted the number of program segments, make sure
3295 that we allocated enough space. This happens when SIZEOF_HEADERS
3296 is used in a linker script. */
3297 alloc
= elf_tdata (abfd
)->program_header_size
/ bed
->s
->sizeof_phdr
;
3298 if (alloc
!= 0 && count
> alloc
)
3300 ((*_bfd_error_handler
)
3301 (_("%s: Not enough room for program headers (allocated %u, need %u)"),
3302 bfd_get_filename (abfd
), alloc
, count
));
3303 bfd_set_error (bfd_error_bad_value
);
3310 amt
= alloc
* sizeof (Elf_Internal_Phdr
);
3311 phdrs
= (Elf_Internal_Phdr
*) bfd_alloc (abfd
, amt
);
3315 off
= bed
->s
->sizeof_ehdr
;
3316 off
+= alloc
* bed
->s
->sizeof_phdr
;
3323 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
3330 /* If elf_segment_map is not from map_sections_to_segments, the
3331 sections may not be correctly ordered. NOTE: sorting should
3332 not be done to the PT_NOTE section of a corefile, which may
3333 contain several pseudo-sections artificially created by bfd.
3334 Sorting these pseudo-sections breaks things badly. */
3336 && !(elf_elfheader (abfd
)->e_type
== ET_CORE
3337 && m
->p_type
== PT_NOTE
))
3338 qsort (m
->sections
, (size_t) m
->count
, sizeof (asection
*),
3341 p
->p_type
= m
->p_type
;
3342 p
->p_flags
= m
->p_flags
;
3344 if (p
->p_type
== PT_LOAD
3346 && (m
->sections
[0]->flags
& SEC_ALLOC
) != 0)
3348 if ((abfd
->flags
& D_PAGED
) != 0)
3349 off
+= (m
->sections
[0]->vma
- off
) % bed
->maxpagesize
;
3352 bfd_size_type align
;
3355 for (i
= 0, secpp
= m
->sections
; i
< m
->count
; i
++, secpp
++)
3357 bfd_size_type secalign
;
3359 secalign
= bfd_get_section_alignment (abfd
, *secpp
);
3360 if (secalign
> align
)
3364 off
+= (m
->sections
[0]->vma
- off
) % (1 << align
);
3371 p
->p_vaddr
= m
->sections
[0]->vma
;
3373 if (m
->p_paddr_valid
)
3374 p
->p_paddr
= m
->p_paddr
;
3375 else if (m
->count
== 0)
3378 p
->p_paddr
= m
->sections
[0]->lma
;
3380 if (p
->p_type
== PT_LOAD
3381 && (abfd
->flags
& D_PAGED
) != 0)
3382 p
->p_align
= bed
->maxpagesize
;
3383 else if (m
->count
== 0)
3384 p
->p_align
= bed
->s
->file_align
;
3392 if (m
->includes_filehdr
)
3394 if (! m
->p_flags_valid
)
3397 p
->p_filesz
= bed
->s
->sizeof_ehdr
;
3398 p
->p_memsz
= bed
->s
->sizeof_ehdr
;
3401 BFD_ASSERT (p
->p_type
== PT_LOAD
);
3403 if (p
->p_vaddr
< (bfd_vma
) off
)
3405 _bfd_error_handler (_("%s: Not enough room for program headers, try linking with -N"),
3406 bfd_get_filename (abfd
));
3407 bfd_set_error (bfd_error_bad_value
);
3412 if (! m
->p_paddr_valid
)
3415 if (p
->p_type
== PT_LOAD
)
3417 filehdr_vaddr
= p
->p_vaddr
;
3418 filehdr_paddr
= p
->p_paddr
;
3422 if (m
->includes_phdrs
)
3424 if (! m
->p_flags_valid
)
3427 if (m
->includes_filehdr
)
3429 if (p
->p_type
== PT_LOAD
)
3431 phdrs_vaddr
= p
->p_vaddr
+ bed
->s
->sizeof_ehdr
;
3432 phdrs_paddr
= p
->p_paddr
+ bed
->s
->sizeof_ehdr
;
3437 p
->p_offset
= bed
->s
->sizeof_ehdr
;
3441 BFD_ASSERT (p
->p_type
== PT_LOAD
);
3442 p
->p_vaddr
-= off
- p
->p_offset
;
3443 if (! m
->p_paddr_valid
)
3444 p
->p_paddr
-= off
- p
->p_offset
;
3447 if (p
->p_type
== PT_LOAD
)
3449 phdrs_vaddr
= p
->p_vaddr
;
3450 phdrs_paddr
= p
->p_paddr
;
3453 phdrs_vaddr
= bed
->maxpagesize
+ bed
->s
->sizeof_ehdr
;
3456 p
->p_filesz
+= alloc
* bed
->s
->sizeof_phdr
;
3457 p
->p_memsz
+= alloc
* bed
->s
->sizeof_phdr
;
3460 if (p
->p_type
== PT_LOAD
3461 || (p
->p_type
== PT_NOTE
&& bfd_get_format (abfd
) == bfd_core
))
3463 if (! m
->includes_filehdr
&& ! m
->includes_phdrs
)
3469 adjust
= off
- (p
->p_offset
+ p
->p_filesz
);
3470 p
->p_filesz
+= adjust
;
3471 p
->p_memsz
+= adjust
;
3477 for (i
= 0, secpp
= m
->sections
; i
< m
->count
; i
++, secpp
++)
3481 bfd_size_type align
;
3485 align
= 1 << bfd_get_section_alignment (abfd
, sec
);
3487 /* The section may have artificial alignment forced by a
3488 link script. Notice this case by the gap between the
3489 cumulative phdr lma and the section's lma. */
3490 if (p
->p_paddr
+ p
->p_memsz
< sec
->lma
)
3492 bfd_vma adjust
= sec
->lma
- (p
->p_paddr
+ p
->p_memsz
);
3494 p
->p_memsz
+= adjust
;
3497 if ((flags
& SEC_LOAD
) != 0)
3498 p
->p_filesz
+= adjust
;
3501 if (p
->p_type
== PT_LOAD
)
3503 bfd_signed_vma adjust
;
3505 if ((flags
& SEC_LOAD
) != 0)
3507 adjust
= sec
->lma
- (p
->p_paddr
+ p
->p_memsz
);
3511 else if ((flags
& SEC_ALLOC
) != 0)
3513 /* The section VMA must equal the file position
3514 modulo the page size. FIXME: I'm not sure if
3515 this adjustment is really necessary. We used to
3516 not have the SEC_LOAD case just above, and then
3517 this was necessary, but now I'm not sure. */
3518 if ((abfd
->flags
& D_PAGED
) != 0)
3519 adjust
= (sec
->vma
- voff
) % bed
->maxpagesize
;
3521 adjust
= (sec
->vma
- voff
) % align
;
3530 (* _bfd_error_handler
) (_("\
3531 Error: First section in segment (%s) starts at 0x%x whereas the segment starts at 0x%x"),
3532 bfd_section_name (abfd
, sec
),
3537 p
->p_memsz
+= adjust
;
3540 if ((flags
& SEC_LOAD
) != 0)
3541 p
->p_filesz
+= adjust
;
3546 /* We check SEC_HAS_CONTENTS here because if NOLOAD is
3547 used in a linker script we may have a section with
3548 SEC_LOAD clear but which is supposed to have
3550 if ((flags
& SEC_LOAD
) != 0
3551 || (flags
& SEC_HAS_CONTENTS
) != 0)
3552 off
+= sec
->_raw_size
;
3554 if ((flags
& SEC_ALLOC
) != 0)
3555 voff
+= sec
->_raw_size
;
3558 if (p
->p_type
== PT_NOTE
&& bfd_get_format (abfd
) == bfd_core
)
3560 /* The actual "note" segment has i == 0.
3561 This is the one that actually contains everything. */
3565 p
->p_filesz
= sec
->_raw_size
;
3566 off
+= sec
->_raw_size
;
3571 /* Fake sections -- don't need to be written. */
3574 flags
= sec
->flags
= 0;
3581 p
->p_memsz
+= sec
->_raw_size
;
3583 if ((flags
& SEC_LOAD
) != 0)
3584 p
->p_filesz
+= sec
->_raw_size
;
3586 if (align
> p
->p_align
3587 && (p
->p_type
!= PT_LOAD
|| (abfd
->flags
& D_PAGED
) == 0))
3591 if (! m
->p_flags_valid
)
3594 if ((flags
& SEC_CODE
) != 0)
3596 if ((flags
& SEC_READONLY
) == 0)
3602 /* Now that we have set the section file positions, we can set up
3603 the file positions for the non PT_LOAD segments. */
3604 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
3608 if (p
->p_type
!= PT_LOAD
&& m
->count
> 0)
3610 BFD_ASSERT (! m
->includes_filehdr
&& ! m
->includes_phdrs
);
3611 p
->p_offset
= m
->sections
[0]->filepos
;
3615 if (m
->includes_filehdr
)
3617 p
->p_vaddr
= filehdr_vaddr
;
3618 if (! m
->p_paddr_valid
)
3619 p
->p_paddr
= filehdr_paddr
;
3621 else if (m
->includes_phdrs
)
3623 p
->p_vaddr
= phdrs_vaddr
;
3624 if (! m
->p_paddr_valid
)
3625 p
->p_paddr
= phdrs_paddr
;
3630 /* Clear out any program headers we allocated but did not use. */
3631 for (; count
< alloc
; count
++, p
++)
3633 memset (p
, 0, sizeof *p
);
3634 p
->p_type
= PT_NULL
;
3637 elf_tdata (abfd
)->phdr
= phdrs
;
3639 elf_tdata (abfd
)->next_file_pos
= off
;
3641 /* Write out the program headers. */
3642 if (bfd_seek (abfd
, (bfd_signed_vma
) bed
->s
->sizeof_ehdr
, SEEK_SET
) != 0
3643 || bed
->s
->write_out_phdrs (abfd
, phdrs
, alloc
) != 0)
3649 /* Get the size of the program header.
3651 If this is called by the linker before any of the section VMA's are set, it
3652 can't calculate the correct value for a strange memory layout. This only
3653 happens when SIZEOF_HEADERS is used in a linker script. In this case,
3654 SORTED_HDRS is NULL and we assume the normal scenario of one text and one
3655 data segment (exclusive of .interp and .dynamic).
3657 ??? User written scripts must either not use SIZEOF_HEADERS, or assume there
3658 will be two segments. */
3660 static bfd_size_type
3661 get_program_header_size (abfd
)
3666 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3668 /* We can't return a different result each time we're called. */
3669 if (elf_tdata (abfd
)->program_header_size
!= 0)
3670 return elf_tdata (abfd
)->program_header_size
;
3672 if (elf_tdata (abfd
)->segment_map
!= NULL
)
3674 struct elf_segment_map
*m
;
3677 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
3679 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
3680 return elf_tdata (abfd
)->program_header_size
;
3683 /* Assume we will need exactly two PT_LOAD segments: one for text
3684 and one for data. */
3687 s
= bfd_get_section_by_name (abfd
, ".interp");
3688 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
3690 /* If we have a loadable interpreter section, we need a
3691 PT_INTERP segment. In this case, assume we also need a
3692 PT_PHDR segment, although that may not be true for all
3697 if (bfd_get_section_by_name (abfd
, ".dynamic") != NULL
)
3699 /* We need a PT_DYNAMIC segment. */
3703 if (elf_tdata (abfd
)->eh_frame_hdr
3704 && bfd_get_section_by_name (abfd
, ".eh_frame_hdr") != NULL
)
3706 /* We need a PT_GNU_EH_FRAME segment. */
3710 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
3712 if ((s
->flags
& SEC_LOAD
) != 0
3713 && strncmp (s
->name
, ".note", 5) == 0)
3715 /* We need a PT_NOTE segment. */
3720 /* Let the backend count up any program headers it might need. */
3721 if (bed
->elf_backend_additional_program_headers
)
3725 a
= (*bed
->elf_backend_additional_program_headers
) (abfd
);
3731 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
3732 return elf_tdata (abfd
)->program_header_size
;
3735 /* Work out the file positions of all the sections. This is called by
3736 _bfd_elf_compute_section_file_positions. All the section sizes and
3737 VMAs must be known before this is called.
3739 We do not consider reloc sections at this point, unless they form
3740 part of the loadable image. Reloc sections are assigned file
3741 positions in assign_file_positions_for_relocs, which is called by
3742 write_object_contents and final_link.
3744 We also don't set the positions of the .symtab and .strtab here. */
3747 assign_file_positions_except_relocs (abfd
)
3750 struct elf_obj_tdata
* const tdata
= elf_tdata (abfd
);
3751 Elf_Internal_Ehdr
* const i_ehdrp
= elf_elfheader (abfd
);
3752 Elf_Internal_Shdr
** const i_shdrpp
= elf_elfsections (abfd
);
3753 unsigned int num_sec
= elf_numsections (abfd
);
3755 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3757 if ((abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0
3758 && bfd_get_format (abfd
) != bfd_core
)
3760 Elf_Internal_Shdr
**hdrpp
;
3763 /* Start after the ELF header. */
3764 off
= i_ehdrp
->e_ehsize
;
3766 /* We are not creating an executable, which means that we are
3767 not creating a program header, and that the actual order of
3768 the sections in the file is unimportant. */
3769 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< num_sec
; i
++, hdrpp
++)
3771 Elf_Internal_Shdr
*hdr
;
3774 if (hdr
->sh_type
== SHT_REL
3775 || hdr
->sh_type
== SHT_RELA
3776 || i
== tdata
->symtab_section
3777 || i
== tdata
->symtab_shndx_section
3778 || i
== tdata
->strtab_section
)
3780 hdr
->sh_offset
= -1;
3783 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
3785 if (i
== SHN_LORESERVE
- 1)
3787 i
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
3788 hdrpp
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
3795 Elf_Internal_Shdr
**hdrpp
;
3797 /* Assign file positions for the loaded sections based on the
3798 assignment of sections to segments. */
3799 if (! assign_file_positions_for_segments (abfd
))
3802 /* Assign file positions for the other sections. */
3804 off
= elf_tdata (abfd
)->next_file_pos
;
3805 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< num_sec
; i
++, hdrpp
++)
3807 Elf_Internal_Shdr
*hdr
;
3810 if (hdr
->bfd_section
!= NULL
3811 && hdr
->bfd_section
->filepos
!= 0)
3812 hdr
->sh_offset
= hdr
->bfd_section
->filepos
;
3813 else if ((hdr
->sh_flags
& SHF_ALLOC
) != 0)
3815 ((*_bfd_error_handler
)
3816 (_("%s: warning: allocated section `%s' not in segment"),
3817 bfd_get_filename (abfd
),
3818 (hdr
->bfd_section
== NULL
3820 : hdr
->bfd_section
->name
)));
3821 if ((abfd
->flags
& D_PAGED
) != 0)
3822 off
+= (hdr
->sh_addr
- off
) % bed
->maxpagesize
;
3824 off
+= (hdr
->sh_addr
- off
) % hdr
->sh_addralign
;
3825 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
,
3828 else if (hdr
->sh_type
== SHT_REL
3829 || hdr
->sh_type
== SHT_RELA
3830 || hdr
== i_shdrpp
[tdata
->symtab_section
]
3831 || hdr
== i_shdrpp
[tdata
->symtab_shndx_section
]
3832 || hdr
== i_shdrpp
[tdata
->strtab_section
])
3833 hdr
->sh_offset
= -1;
3835 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
3837 if (i
== SHN_LORESERVE
- 1)
3839 i
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
3840 hdrpp
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
3845 /* Place the section headers. */
3846 off
= align_file_position (off
, bed
->s
->file_align
);
3847 i_ehdrp
->e_shoff
= off
;
3848 off
+= i_ehdrp
->e_shnum
* i_ehdrp
->e_shentsize
;
3850 elf_tdata (abfd
)->next_file_pos
= off
;
3859 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
3860 Elf_Internal_Phdr
*i_phdrp
= 0; /* Program header table, internal form */
3861 Elf_Internal_Shdr
**i_shdrp
; /* Section header table, internal form */
3863 struct elf_strtab_hash
*shstrtab
;
3864 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3866 i_ehdrp
= elf_elfheader (abfd
);
3867 i_shdrp
= elf_elfsections (abfd
);
3869 shstrtab
= _bfd_elf_strtab_init ();
3870 if (shstrtab
== NULL
)
3873 elf_shstrtab (abfd
) = shstrtab
;
3875 i_ehdrp
->e_ident
[EI_MAG0
] = ELFMAG0
;
3876 i_ehdrp
->e_ident
[EI_MAG1
] = ELFMAG1
;
3877 i_ehdrp
->e_ident
[EI_MAG2
] = ELFMAG2
;
3878 i_ehdrp
->e_ident
[EI_MAG3
] = ELFMAG3
;
3880 i_ehdrp
->e_ident
[EI_CLASS
] = bed
->s
->elfclass
;
3881 i_ehdrp
->e_ident
[EI_DATA
] =
3882 bfd_big_endian (abfd
) ? ELFDATA2MSB
: ELFDATA2LSB
;
3883 i_ehdrp
->e_ident
[EI_VERSION
] = bed
->s
->ev_current
;
3885 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_NONE
;
3886 i_ehdrp
->e_ident
[EI_ABIVERSION
] = 0;
3888 for (count
= EI_PAD
; count
< EI_NIDENT
; count
++)
3889 i_ehdrp
->e_ident
[count
] = 0;
3891 if ((abfd
->flags
& DYNAMIC
) != 0)
3892 i_ehdrp
->e_type
= ET_DYN
;
3893 else if ((abfd
->flags
& EXEC_P
) != 0)
3894 i_ehdrp
->e_type
= ET_EXEC
;
3895 else if (bfd_get_format (abfd
) == bfd_core
)
3896 i_ehdrp
->e_type
= ET_CORE
;
3898 i_ehdrp
->e_type
= ET_REL
;
3900 switch (bfd_get_arch (abfd
))
3902 case bfd_arch_unknown
:
3903 i_ehdrp
->e_machine
= EM_NONE
;
3906 /* There used to be a long list of cases here, each one setting
3907 e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE
3908 in the corresponding bfd definition. To avoid duplication,
3909 the switch was removed. Machines that need special handling
3910 can generally do it in elf_backend_final_write_processing(),
3911 unless they need the information earlier than the final write.
3912 Such need can generally be supplied by replacing the tests for
3913 e_machine with the conditions used to determine it. */
3915 if (get_elf_backend_data (abfd
) != NULL
)
3916 i_ehdrp
->e_machine
= get_elf_backend_data (abfd
)->elf_machine_code
;
3918 i_ehdrp
->e_machine
= EM_NONE
;
3921 i_ehdrp
->e_version
= bed
->s
->ev_current
;
3922 i_ehdrp
->e_ehsize
= bed
->s
->sizeof_ehdr
;
3924 /* No program header, for now. */
3925 i_ehdrp
->e_phoff
= 0;
3926 i_ehdrp
->e_phentsize
= 0;
3927 i_ehdrp
->e_phnum
= 0;
3929 /* Each bfd section is section header entry. */
3930 i_ehdrp
->e_entry
= bfd_get_start_address (abfd
);
3931 i_ehdrp
->e_shentsize
= bed
->s
->sizeof_shdr
;
3933 /* If we're building an executable, we'll need a program header table. */
3934 if (abfd
->flags
& EXEC_P
)
3936 /* It all happens later. */
3938 i_ehdrp
->e_phentsize
= sizeof (Elf_External_Phdr
);
3940 /* elf_build_phdrs() returns a (NULL-terminated) array of
3941 Elf_Internal_Phdrs. */
3942 i_phdrp
= elf_build_phdrs (abfd
, i_ehdrp
, i_shdrp
, &i_ehdrp
->e_phnum
);
3943 i_ehdrp
->e_phoff
= outbase
;
3944 outbase
+= i_ehdrp
->e_phentsize
* i_ehdrp
->e_phnum
;
3949 i_ehdrp
->e_phentsize
= 0;
3951 i_ehdrp
->e_phoff
= 0;
3954 elf_tdata (abfd
)->symtab_hdr
.sh_name
=
3955 (unsigned int) _bfd_elf_strtab_add (shstrtab
, ".symtab", false);
3956 elf_tdata (abfd
)->strtab_hdr
.sh_name
=
3957 (unsigned int) _bfd_elf_strtab_add (shstrtab
, ".strtab", false);
3958 elf_tdata (abfd
)->shstrtab_hdr
.sh_name
=
3959 (unsigned int) _bfd_elf_strtab_add (shstrtab
, ".shstrtab", false);
3960 if (elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
3961 || elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
3962 || elf_tdata (abfd
)->shstrtab_hdr
.sh_name
== (unsigned int) -1)
3968 /* Assign file positions for all the reloc sections which are not part
3969 of the loadable file image. */
3972 _bfd_elf_assign_file_positions_for_relocs (abfd
)
3976 unsigned int i
, num_sec
;
3977 Elf_Internal_Shdr
**shdrpp
;
3979 off
= elf_tdata (abfd
)->next_file_pos
;
3981 num_sec
= elf_numsections (abfd
);
3982 for (i
= 1, shdrpp
= elf_elfsections (abfd
) + 1; i
< num_sec
; i
++, shdrpp
++)
3984 Elf_Internal_Shdr
*shdrp
;
3987 if ((shdrp
->sh_type
== SHT_REL
|| shdrp
->sh_type
== SHT_RELA
)
3988 && shdrp
->sh_offset
== -1)
3989 off
= _bfd_elf_assign_file_position_for_section (shdrp
, off
, true);
3992 elf_tdata (abfd
)->next_file_pos
= off
;
3996 _bfd_elf_write_object_contents (abfd
)
3999 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
4000 Elf_Internal_Ehdr
*i_ehdrp
;
4001 Elf_Internal_Shdr
**i_shdrp
;
4003 unsigned int count
, num_sec
;
4005 if (! abfd
->output_has_begun
4006 && ! _bfd_elf_compute_section_file_positions
4007 (abfd
, (struct bfd_link_info
*) NULL
))
4010 i_shdrp
= elf_elfsections (abfd
);
4011 i_ehdrp
= elf_elfheader (abfd
);
4014 bfd_map_over_sections (abfd
, bed
->s
->write_relocs
, &failed
);
4018 _bfd_elf_assign_file_positions_for_relocs (abfd
);
4020 /* After writing the headers, we need to write the sections too... */
4021 num_sec
= elf_numsections (abfd
);
4022 for (count
= 1; count
< num_sec
; count
++)
4024 if (bed
->elf_backend_section_processing
)
4025 (*bed
->elf_backend_section_processing
) (abfd
, i_shdrp
[count
]);
4026 if (i_shdrp
[count
]->contents
)
4028 bfd_size_type amt
= i_shdrp
[count
]->sh_size
;
4030 if (bfd_seek (abfd
, i_shdrp
[count
]->sh_offset
, SEEK_SET
) != 0
4031 || bfd_bwrite (i_shdrp
[count
]->contents
, amt
, abfd
) != amt
)
4034 if (count
== SHN_LORESERVE
- 1)
4035 count
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
4038 /* Write out the section header names. */
4039 if (bfd_seek (abfd
, elf_tdata (abfd
)->shstrtab_hdr
.sh_offset
, SEEK_SET
) != 0
4040 || ! _bfd_elf_strtab_emit (abfd
, elf_shstrtab (abfd
)))
4043 if (bed
->elf_backend_final_write_processing
)
4044 (*bed
->elf_backend_final_write_processing
) (abfd
,
4045 elf_tdata (abfd
)->linker
);
4047 return bed
->s
->write_shdrs_and_ehdr (abfd
);
4051 _bfd_elf_write_corefile_contents (abfd
)
4054 /* Hopefully this can be done just like an object file. */
4055 return _bfd_elf_write_object_contents (abfd
);
4058 /* Given a section, search the header to find them. */
4061 _bfd_elf_section_from_bfd_section (abfd
, asect
)
4065 struct elf_backend_data
*bed
;
4068 if (elf_section_data (asect
) != NULL
4069 && elf_section_data (asect
)->this_idx
!= 0)
4070 return elf_section_data (asect
)->this_idx
;
4072 if (bfd_is_abs_section (asect
))
4074 else if (bfd_is_com_section (asect
))
4076 else if (bfd_is_und_section (asect
))
4080 Elf_Internal_Shdr
**i_shdrp
= elf_elfsections (abfd
);
4081 int maxindex
= elf_numsections (abfd
);
4083 for (index
= 1; index
< maxindex
; index
++)
4085 Elf_Internal_Shdr
*hdr
= i_shdrp
[index
];
4087 if (hdr
!= NULL
&& hdr
->bfd_section
== asect
)
4093 bed
= get_elf_backend_data (abfd
);
4094 if (bed
->elf_backend_section_from_bfd_section
)
4098 if ((*bed
->elf_backend_section_from_bfd_section
) (abfd
, asect
, &retval
))
4103 bfd_set_error (bfd_error_nonrepresentable_section
);
4108 /* Given a BFD symbol, return the index in the ELF symbol table, or -1
4112 _bfd_elf_symbol_from_bfd_symbol (abfd
, asym_ptr_ptr
)
4114 asymbol
**asym_ptr_ptr
;
4116 asymbol
*asym_ptr
= *asym_ptr_ptr
;
4118 flagword flags
= asym_ptr
->flags
;
4120 /* When gas creates relocations against local labels, it creates its
4121 own symbol for the section, but does put the symbol into the
4122 symbol chain, so udata is 0. When the linker is generating
4123 relocatable output, this section symbol may be for one of the
4124 input sections rather than the output section. */
4125 if (asym_ptr
->udata
.i
== 0
4126 && (flags
& BSF_SECTION_SYM
)
4127 && asym_ptr
->section
)
4131 if (asym_ptr
->section
->output_section
!= NULL
)
4132 indx
= asym_ptr
->section
->output_section
->index
;
4134 indx
= asym_ptr
->section
->index
;
4135 if (indx
< elf_num_section_syms (abfd
)
4136 && elf_section_syms (abfd
)[indx
] != NULL
)
4137 asym_ptr
->udata
.i
= elf_section_syms (abfd
)[indx
]->udata
.i
;
4140 idx
= asym_ptr
->udata
.i
;
4144 /* This case can occur when using --strip-symbol on a symbol
4145 which is used in a relocation entry. */
4146 (*_bfd_error_handler
)
4147 (_("%s: symbol `%s' required but not present"),
4148 bfd_archive_filename (abfd
), bfd_asymbol_name (asym_ptr
));
4149 bfd_set_error (bfd_error_no_symbols
);
4156 "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n",
4157 (long) asym_ptr
, asym_ptr
->name
, idx
, flags
,
4158 elf_symbol_flags (flags
));
4166 /* Copy private BFD data. This copies any program header information. */
4169 copy_private_bfd_data (ibfd
, obfd
)
4173 Elf_Internal_Ehdr
* iehdr
;
4174 struct elf_segment_map
* map
;
4175 struct elf_segment_map
* map_first
;
4176 struct elf_segment_map
** pointer_to_map
;
4177 Elf_Internal_Phdr
* segment
;
4180 unsigned int num_segments
;
4181 boolean phdr_included
= false;
4182 bfd_vma maxpagesize
;
4183 struct elf_segment_map
* phdr_adjust_seg
= NULL
;
4184 unsigned int phdr_adjust_num
= 0;
4186 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
4187 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
4190 if (elf_tdata (ibfd
)->phdr
== NULL
)
4193 iehdr
= elf_elfheader (ibfd
);
4196 pointer_to_map
= &map_first
;
4198 num_segments
= elf_elfheader (ibfd
)->e_phnum
;
4199 maxpagesize
= get_elf_backend_data (obfd
)->maxpagesize
;
4201 /* Returns the end address of the segment + 1. */
4202 #define SEGMENT_END(segment, start) \
4203 (start + (segment->p_memsz > segment->p_filesz \
4204 ? segment->p_memsz : segment->p_filesz))
4206 /* Returns true if the given section is contained within
4207 the given segment. VMA addresses are compared. */
4208 #define IS_CONTAINED_BY_VMA(section, segment) \
4209 (section->vma >= segment->p_vaddr \
4210 && (section->vma + section->_raw_size) \
4211 <= (SEGMENT_END (segment, segment->p_vaddr)))
4213 /* Returns true if the given section is contained within
4214 the given segment. LMA addresses are compared. */
4215 #define IS_CONTAINED_BY_LMA(section, segment, base) \
4216 (section->lma >= base \
4217 && (section->lma + section->_raw_size) \
4218 <= SEGMENT_END (segment, base))
4220 /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */
4221 #define IS_COREFILE_NOTE(p, s) \
4222 (p->p_type == PT_NOTE \
4223 && bfd_get_format (ibfd) == bfd_core \
4224 && s->vma == 0 && s->lma == 0 \
4225 && (bfd_vma) s->filepos >= p->p_offset \
4226 && (bfd_vma) s->filepos + s->_raw_size \
4227 <= p->p_offset + p->p_filesz)
4229 /* The complicated case when p_vaddr is 0 is to handle the Solaris
4230 linker, which generates a PT_INTERP section with p_vaddr and
4231 p_memsz set to 0. */
4232 #define IS_SOLARIS_PT_INTERP(p, s) \
4234 && p->p_filesz > 0 \
4235 && (s->flags & SEC_HAS_CONTENTS) != 0 \
4236 && s->_raw_size > 0 \
4237 && (bfd_vma) s->filepos >= p->p_offset \
4238 && ((bfd_vma) s->filepos + s->_raw_size \
4239 <= p->p_offset + p->p_filesz))
4241 /* Decide if the given section should be included in the given segment.
4242 A section will be included if:
4243 1. It is within the address space of the segment -- we use the LMA
4244 if that is set for the segment and the VMA otherwise,
4245 2. It is an allocated segment,
4246 3. There is an output section associated with it,
4247 4. The section has not already been allocated to a previous segment. */
4248 #define INCLUDE_SECTION_IN_SEGMENT(section, segment) \
4249 (((((segment->p_paddr \
4250 ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \
4251 : IS_CONTAINED_BY_VMA (section, segment)) \
4252 || IS_SOLARIS_PT_INTERP (segment, section)) \
4253 && (section->flags & SEC_ALLOC) != 0) \
4254 || IS_COREFILE_NOTE (segment, section)) \
4255 && section->output_section != NULL \
4256 && section->segment_mark == false)
4258 /* Returns true iff seg1 starts after the end of seg2. */
4259 #define SEGMENT_AFTER_SEGMENT(seg1, seg2) \
4260 (seg1->p_vaddr >= SEGMENT_END (seg2, seg2->p_vaddr))
4262 /* Returns true iff seg1 and seg2 overlap. */
4263 #define SEGMENT_OVERLAPS(seg1, seg2) \
4264 (!(SEGMENT_AFTER_SEGMENT (seg1, seg2) || SEGMENT_AFTER_SEGMENT (seg2, seg1)))
4266 /* Initialise the segment mark field. */
4267 for (section
= ibfd
->sections
; section
!= NULL
; section
= section
->next
)
4268 section
->segment_mark
= false;
4270 /* Scan through the segments specified in the program header
4271 of the input BFD. For this first scan we look for overlaps
4272 in the loadable segments. These can be created by weird
4273 parameters to objcopy. */
4274 for (i
= 0, segment
= elf_tdata (ibfd
)->phdr
;
4279 Elf_Internal_Phdr
*segment2
;
4281 if (segment
->p_type
!= PT_LOAD
)
4284 /* Determine if this segment overlaps any previous segments. */
4285 for (j
= 0, segment2
= elf_tdata (ibfd
)->phdr
; j
< i
; j
++, segment2
++)
4287 bfd_signed_vma extra_length
;
4289 if (segment2
->p_type
!= PT_LOAD
4290 || ! SEGMENT_OVERLAPS (segment
, segment2
))
4293 /* Merge the two segments together. */
4294 if (segment2
->p_vaddr
< segment
->p_vaddr
)
4296 /* Extend SEGMENT2 to include SEGMENT and then delete
4299 SEGMENT_END (segment
, segment
->p_vaddr
)
4300 - SEGMENT_END (segment2
, segment2
->p_vaddr
);
4302 if (extra_length
> 0)
4304 segment2
->p_memsz
+= extra_length
;
4305 segment2
->p_filesz
+= extra_length
;
4308 segment
->p_type
= PT_NULL
;
4310 /* Since we have deleted P we must restart the outer loop. */
4312 segment
= elf_tdata (ibfd
)->phdr
;
4317 /* Extend SEGMENT to include SEGMENT2 and then delete
4320 SEGMENT_END (segment2
, segment2
->p_vaddr
)
4321 - SEGMENT_END (segment
, segment
->p_vaddr
);
4323 if (extra_length
> 0)
4325 segment
->p_memsz
+= extra_length
;
4326 segment
->p_filesz
+= extra_length
;
4329 segment2
->p_type
= PT_NULL
;
4334 /* The second scan attempts to assign sections to segments. */
4335 for (i
= 0, segment
= elf_tdata (ibfd
)->phdr
;
4339 unsigned int section_count
;
4340 asection
** sections
;
4341 asection
* output_section
;
4343 bfd_vma matching_lma
;
4344 bfd_vma suggested_lma
;
4348 if (segment
->p_type
== PT_NULL
)
4351 /* Compute how many sections might be placed into this segment. */
4353 for (section
= ibfd
->sections
; section
!= NULL
; section
= section
->next
)
4354 if (INCLUDE_SECTION_IN_SEGMENT (section
, segment
))
4357 /* Allocate a segment map big enough to contain all of the
4358 sections we have selected. */
4359 amt
= sizeof (struct elf_segment_map
);
4360 amt
+= ((bfd_size_type
) section_count
- 1) * sizeof (asection
*);
4361 map
= (struct elf_segment_map
*) bfd_alloc (obfd
, amt
);
4365 /* Initialise the fields of the segment map. Default to
4366 using the physical address of the segment in the input BFD. */
4368 map
->p_type
= segment
->p_type
;
4369 map
->p_flags
= segment
->p_flags
;
4370 map
->p_flags_valid
= 1;
4371 map
->p_paddr
= segment
->p_paddr
;
4372 map
->p_paddr_valid
= 1;
4374 /* Determine if this segment contains the ELF file header
4375 and if it contains the program headers themselves. */
4376 map
->includes_filehdr
= (segment
->p_offset
== 0
4377 && segment
->p_filesz
>= iehdr
->e_ehsize
);
4379 map
->includes_phdrs
= 0;
4381 if (! phdr_included
|| segment
->p_type
!= PT_LOAD
)
4383 map
->includes_phdrs
=
4384 (segment
->p_offset
<= (bfd_vma
) iehdr
->e_phoff
4385 && (segment
->p_offset
+ segment
->p_filesz
4386 >= ((bfd_vma
) iehdr
->e_phoff
4387 + iehdr
->e_phnum
* iehdr
->e_phentsize
)));
4389 if (segment
->p_type
== PT_LOAD
&& map
->includes_phdrs
)
4390 phdr_included
= true;
4393 if (section_count
== 0)
4395 /* Special segments, such as the PT_PHDR segment, may contain
4396 no sections, but ordinary, loadable segments should contain
4398 if (segment
->p_type
== PT_LOAD
)
4400 (_("%s: warning: Empty loadable segment detected\n"),
4401 bfd_archive_filename (ibfd
));
4404 *pointer_to_map
= map
;
4405 pointer_to_map
= &map
->next
;
4410 /* Now scan the sections in the input BFD again and attempt
4411 to add their corresponding output sections to the segment map.
4412 The problem here is how to handle an output section which has
4413 been moved (ie had its LMA changed). There are four possibilities:
4415 1. None of the sections have been moved.
4416 In this case we can continue to use the segment LMA from the
4419 2. All of the sections have been moved by the same amount.
4420 In this case we can change the segment's LMA to match the LMA
4421 of the first section.
4423 3. Some of the sections have been moved, others have not.
4424 In this case those sections which have not been moved can be
4425 placed in the current segment which will have to have its size,
4426 and possibly its LMA changed, and a new segment or segments will
4427 have to be created to contain the other sections.
4429 4. The sections have been moved, but not be the same amount.
4430 In this case we can change the segment's LMA to match the LMA
4431 of the first section and we will have to create a new segment
4432 or segments to contain the other sections.
4434 In order to save time, we allocate an array to hold the section
4435 pointers that we are interested in. As these sections get assigned
4436 to a segment, they are removed from this array. */
4438 amt
= (bfd_size_type
) section_count
* sizeof (asection
*);
4439 sections
= (asection
**) bfd_malloc (amt
);
4440 if (sections
== NULL
)
4443 /* Step One: Scan for segment vs section LMA conflicts.
4444 Also add the sections to the section array allocated above.
4445 Also add the sections to the current segment. In the common
4446 case, where the sections have not been moved, this means that
4447 we have completely filled the segment, and there is nothing
4453 for (j
= 0, section
= ibfd
->sections
;
4455 section
= section
->next
)
4457 if (INCLUDE_SECTION_IN_SEGMENT (section
, segment
))
4459 output_section
= section
->output_section
;
4461 sections
[j
++] = section
;
4463 /* The Solaris native linker always sets p_paddr to 0.
4464 We try to catch that case here, and set it to the
4466 if (segment
->p_paddr
== 0
4467 && segment
->p_vaddr
!= 0
4469 && output_section
->lma
!= 0
4470 && (output_section
->vma
== (segment
->p_vaddr
4471 + (map
->includes_filehdr
4474 + (map
->includes_phdrs
4476 * iehdr
->e_phentsize
)
4478 map
->p_paddr
= segment
->p_vaddr
;
4480 /* Match up the physical address of the segment with the
4481 LMA address of the output section. */
4482 if (IS_CONTAINED_BY_LMA (output_section
, segment
, map
->p_paddr
)
4483 || IS_COREFILE_NOTE (segment
, section
))
4485 if (matching_lma
== 0)
4486 matching_lma
= output_section
->lma
;
4488 /* We assume that if the section fits within the segment
4489 then it does not overlap any other section within that
4491 map
->sections
[isec
++] = output_section
;
4493 else if (suggested_lma
== 0)
4494 suggested_lma
= output_section
->lma
;
4498 BFD_ASSERT (j
== section_count
);
4500 /* Step Two: Adjust the physical address of the current segment,
4502 if (isec
== section_count
)
4504 /* All of the sections fitted within the segment as currently
4505 specified. This is the default case. Add the segment to
4506 the list of built segments and carry on to process the next
4507 program header in the input BFD. */
4508 map
->count
= section_count
;
4509 *pointer_to_map
= map
;
4510 pointer_to_map
= &map
->next
;
4517 if (matching_lma
!= 0)
4519 /* At least one section fits inside the current segment.
4520 Keep it, but modify its physical address to match the
4521 LMA of the first section that fitted. */
4522 map
->p_paddr
= matching_lma
;
4526 /* None of the sections fitted inside the current segment.
4527 Change the current segment's physical address to match
4528 the LMA of the first section. */
4529 map
->p_paddr
= suggested_lma
;
4532 /* Offset the segment physical address from the lma
4533 to allow for space taken up by elf headers. */
4534 if (map
->includes_filehdr
)
4535 map
->p_paddr
-= iehdr
->e_ehsize
;
4537 if (map
->includes_phdrs
)
4539 map
->p_paddr
-= iehdr
->e_phnum
* iehdr
->e_phentsize
;
4541 /* iehdr->e_phnum is just an estimate of the number
4542 of program headers that we will need. Make a note
4543 here of the number we used and the segment we chose
4544 to hold these headers, so that we can adjust the
4545 offset when we know the correct value. */
4546 phdr_adjust_num
= iehdr
->e_phnum
;
4547 phdr_adjust_seg
= map
;
4551 /* Step Three: Loop over the sections again, this time assigning
4552 those that fit to the current segment and remvoing them from the
4553 sections array; but making sure not to leave large gaps. Once all
4554 possible sections have been assigned to the current segment it is
4555 added to the list of built segments and if sections still remain
4556 to be assigned, a new segment is constructed before repeating
4564 /* Fill the current segment with sections that fit. */
4565 for (j
= 0; j
< section_count
; j
++)
4567 section
= sections
[j
];
4569 if (section
== NULL
)
4572 output_section
= section
->output_section
;
4574 BFD_ASSERT (output_section
!= NULL
);
4576 if (IS_CONTAINED_BY_LMA (output_section
, segment
, map
->p_paddr
)
4577 || IS_COREFILE_NOTE (segment
, section
))
4579 if (map
->count
== 0)
4581 /* If the first section in a segment does not start at
4582 the beginning of the segment, then something is
4584 if (output_section
->lma
!=
4586 + (map
->includes_filehdr
? iehdr
->e_ehsize
: 0)
4587 + (map
->includes_phdrs
4588 ? iehdr
->e_phnum
* iehdr
->e_phentsize
4594 asection
* prev_sec
;
4596 prev_sec
= map
->sections
[map
->count
- 1];
4598 /* If the gap between the end of the previous section
4599 and the start of this section is more than
4600 maxpagesize then we need to start a new segment. */
4601 if ((BFD_ALIGN (prev_sec
->lma
+ prev_sec
->_raw_size
,
4603 < BFD_ALIGN (output_section
->lma
, maxpagesize
))
4604 || ((prev_sec
->lma
+ prev_sec
->_raw_size
)
4605 > output_section
->lma
))
4607 if (suggested_lma
== 0)
4608 suggested_lma
= output_section
->lma
;
4614 map
->sections
[map
->count
++] = output_section
;
4617 section
->segment_mark
= true;
4619 else if (suggested_lma
== 0)
4620 suggested_lma
= output_section
->lma
;
4623 BFD_ASSERT (map
->count
> 0);
4625 /* Add the current segment to the list of built segments. */
4626 *pointer_to_map
= map
;
4627 pointer_to_map
= &map
->next
;
4629 if (isec
< section_count
)
4631 /* We still have not allocated all of the sections to
4632 segments. Create a new segment here, initialise it
4633 and carry on looping. */
4634 amt
= sizeof (struct elf_segment_map
);
4635 amt
+= ((bfd_size_type
) section_count
- 1) * sizeof (asection
*);
4636 map
= (struct elf_segment_map
*) bfd_alloc (obfd
, amt
);
4640 /* Initialise the fields of the segment map. Set the physical
4641 physical address to the LMA of the first section that has
4642 not yet been assigned. */
4644 map
->p_type
= segment
->p_type
;
4645 map
->p_flags
= segment
->p_flags
;
4646 map
->p_flags_valid
= 1;
4647 map
->p_paddr
= suggested_lma
;
4648 map
->p_paddr_valid
= 1;
4649 map
->includes_filehdr
= 0;
4650 map
->includes_phdrs
= 0;
4653 while (isec
< section_count
);
4658 /* The Solaris linker creates program headers in which all the
4659 p_paddr fields are zero. When we try to objcopy or strip such a
4660 file, we get confused. Check for this case, and if we find it
4661 reset the p_paddr_valid fields. */
4662 for (map
= map_first
; map
!= NULL
; map
= map
->next
)
4663 if (map
->p_paddr
!= 0)
4667 for (map
= map_first
; map
!= NULL
; map
= map
->next
)
4668 map
->p_paddr_valid
= 0;
4671 elf_tdata (obfd
)->segment_map
= map_first
;
4673 /* If we had to estimate the number of program headers that were
4674 going to be needed, then check our estimate now and adjust
4675 the offset if necessary. */
4676 if (phdr_adjust_seg
!= NULL
)
4680 for (count
= 0, map
= map_first
; map
!= NULL
; map
= map
->next
)
4683 if (count
> phdr_adjust_num
)
4684 phdr_adjust_seg
->p_paddr
4685 -= (count
- phdr_adjust_num
) * iehdr
->e_phentsize
;
4689 /* Final Step: Sort the segments into ascending order of physical
4691 if (map_first
!= NULL
)
4693 struct elf_segment_map
*prev
;
4696 for (map
= map_first
->next
; map
!= NULL
; prev
= map
, map
= map
->next
)
4698 /* Yes I know - its a bubble sort.... */
4699 if (map
->next
!= NULL
&& (map
->next
->p_paddr
< map
->p_paddr
))
4701 /* Swap map and map->next. */
4702 prev
->next
= map
->next
;
4703 map
->next
= map
->next
->next
;
4704 prev
->next
->next
= map
;
4714 #undef IS_CONTAINED_BY_VMA
4715 #undef IS_CONTAINED_BY_LMA
4716 #undef IS_COREFILE_NOTE
4717 #undef IS_SOLARIS_PT_INTERP
4718 #undef INCLUDE_SECTION_IN_SEGMENT
4719 #undef SEGMENT_AFTER_SEGMENT
4720 #undef SEGMENT_OVERLAPS
4724 /* Copy private section information. This copies over the entsize
4725 field, and sometimes the info field. */
4728 _bfd_elf_copy_private_section_data (ibfd
, isec
, obfd
, osec
)
4734 Elf_Internal_Shdr
*ihdr
, *ohdr
;
4736 if (ibfd
->xvec
->flavour
!= bfd_target_elf_flavour
4737 || obfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
4740 /* Copy over private BFD data if it has not already been copied.
4741 This must be done here, rather than in the copy_private_bfd_data
4742 entry point, because the latter is called after the section
4743 contents have been set, which means that the program headers have
4744 already been worked out. */
4745 if (elf_tdata (obfd
)->segment_map
== NULL
4746 && elf_tdata (ibfd
)->phdr
!= NULL
)
4750 /* Only set up the segments if there are no more SEC_ALLOC
4751 sections. FIXME: This won't do the right thing if objcopy is
4752 used to remove the last SEC_ALLOC section, since objcopy
4753 won't call this routine in that case. */
4754 for (s
= isec
->next
; s
!= NULL
; s
= s
->next
)
4755 if ((s
->flags
& SEC_ALLOC
) != 0)
4759 if (! copy_private_bfd_data (ibfd
, obfd
))
4764 ihdr
= &elf_section_data (isec
)->this_hdr
;
4765 ohdr
= &elf_section_data (osec
)->this_hdr
;
4767 ohdr
->sh_entsize
= ihdr
->sh_entsize
;
4769 if (ihdr
->sh_type
== SHT_SYMTAB
4770 || ihdr
->sh_type
== SHT_DYNSYM
4771 || ihdr
->sh_type
== SHT_GNU_verneed
4772 || ihdr
->sh_type
== SHT_GNU_verdef
)
4773 ohdr
->sh_info
= ihdr
->sh_info
;
4775 elf_section_data (osec
)->use_rela_p
4776 = elf_section_data (isec
)->use_rela_p
;
4781 /* Copy private symbol information. If this symbol is in a section
4782 which we did not map into a BFD section, try to map the section
4783 index correctly. We use special macro definitions for the mapped
4784 section indices; these definitions are interpreted by the
4785 swap_out_syms function. */
4787 #define MAP_ONESYMTAB (SHN_HIOS + 1)
4788 #define MAP_DYNSYMTAB (SHN_HIOS + 2)
4789 #define MAP_STRTAB (SHN_HIOS + 3)
4790 #define MAP_SHSTRTAB (SHN_HIOS + 4)
4791 #define MAP_SYM_SHNDX (SHN_HIOS + 5)
4794 _bfd_elf_copy_private_symbol_data (ibfd
, isymarg
, obfd
, osymarg
)
4800 elf_symbol_type
*isym
, *osym
;
4802 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
4803 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
4806 isym
= elf_symbol_from (ibfd
, isymarg
);
4807 osym
= elf_symbol_from (obfd
, osymarg
);
4811 && bfd_is_abs_section (isym
->symbol
.section
))
4815 shndx
= isym
->internal_elf_sym
.st_shndx
;
4816 if (shndx
== elf_onesymtab (ibfd
))
4817 shndx
= MAP_ONESYMTAB
;
4818 else if (shndx
== elf_dynsymtab (ibfd
))
4819 shndx
= MAP_DYNSYMTAB
;
4820 else if (shndx
== elf_tdata (ibfd
)->strtab_section
)
4822 else if (shndx
== elf_tdata (ibfd
)->shstrtab_section
)
4823 shndx
= MAP_SHSTRTAB
;
4824 else if (shndx
== elf_tdata (ibfd
)->symtab_shndx_section
)
4825 shndx
= MAP_SYM_SHNDX
;
4826 osym
->internal_elf_sym
.st_shndx
= shndx
;
4832 /* Swap out the symbols. */
4835 swap_out_syms (abfd
, sttp
, relocatable_p
)
4837 struct bfd_strtab_hash
**sttp
;
4840 struct elf_backend_data
*bed
;
4843 struct bfd_strtab_hash
*stt
;
4844 Elf_Internal_Shdr
*symtab_hdr
;
4845 Elf_Internal_Shdr
*symtab_shndx_hdr
;
4846 Elf_Internal_Shdr
*symstrtab_hdr
;
4847 char *outbound_syms
;
4848 char *outbound_shndx
;
4852 if (!elf_map_symbols (abfd
))
4855 /* Dump out the symtabs. */
4856 stt
= _bfd_elf_stringtab_init ();
4860 bed
= get_elf_backend_data (abfd
);
4861 symcount
= bfd_get_symcount (abfd
);
4862 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4863 symtab_hdr
->sh_type
= SHT_SYMTAB
;
4864 symtab_hdr
->sh_entsize
= bed
->s
->sizeof_sym
;
4865 symtab_hdr
->sh_size
= symtab_hdr
->sh_entsize
* (symcount
+ 1);
4866 symtab_hdr
->sh_info
= elf_num_locals (abfd
) + 1;
4867 symtab_hdr
->sh_addralign
= bed
->s
->file_align
;
4869 symstrtab_hdr
= &elf_tdata (abfd
)->strtab_hdr
;
4870 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
4872 amt
= (bfd_size_type
) (1 + symcount
) * bed
->s
->sizeof_sym
;
4873 outbound_syms
= bfd_alloc (abfd
, amt
);
4874 if (outbound_syms
== NULL
)
4876 symtab_hdr
->contents
= (PTR
) outbound_syms
;
4878 outbound_shndx
= NULL
;
4879 symtab_shndx_hdr
= &elf_tdata (abfd
)->symtab_shndx_hdr
;
4880 if (symtab_shndx_hdr
->sh_name
!= 0)
4882 amt
= (bfd_size_type
) (1 + symcount
) * sizeof (Elf_External_Sym_Shndx
);
4883 outbound_shndx
= bfd_alloc (abfd
, amt
);
4884 if (outbound_shndx
== NULL
)
4886 memset (outbound_shndx
, 0, (unsigned long) amt
);
4887 symtab_shndx_hdr
->contents
= outbound_shndx
;
4888 symtab_shndx_hdr
->sh_type
= SHT_SYMTAB_SHNDX
;
4889 symtab_shndx_hdr
->sh_size
= amt
;
4890 symtab_shndx_hdr
->sh_addralign
= sizeof (Elf_External_Sym_Shndx
);
4891 symtab_shndx_hdr
->sh_entsize
= sizeof (Elf_External_Sym_Shndx
);
4894 /* now generate the data (for "contents") */
4896 /* Fill in zeroth symbol and swap it out. */
4897 Elf_Internal_Sym sym
;
4903 sym
.st_shndx
= SHN_UNDEF
;
4904 bed
->s
->swap_symbol_out (abfd
, &sym
, outbound_syms
, outbound_shndx
);
4905 outbound_syms
+= bed
->s
->sizeof_sym
;
4906 if (outbound_shndx
!= NULL
)
4907 outbound_shndx
+= sizeof (Elf_External_Sym_Shndx
);
4910 syms
= bfd_get_outsymbols (abfd
);
4911 for (idx
= 0; idx
< symcount
; idx
++)
4913 Elf_Internal_Sym sym
;
4914 bfd_vma value
= syms
[idx
]->value
;
4915 elf_symbol_type
*type_ptr
;
4916 flagword flags
= syms
[idx
]->flags
;
4919 if ((flags
& (BSF_SECTION_SYM
| BSF_GLOBAL
)) == BSF_SECTION_SYM
)
4921 /* Local section symbols have no name. */
4926 sym
.st_name
= (unsigned long) _bfd_stringtab_add (stt
,
4929 if (sym
.st_name
== (unsigned long) -1)
4933 type_ptr
= elf_symbol_from (abfd
, syms
[idx
]);
4935 if ((flags
& BSF_SECTION_SYM
) == 0
4936 && bfd_is_com_section (syms
[idx
]->section
))
4938 /* ELF common symbols put the alignment into the `value' field,
4939 and the size into the `size' field. This is backwards from
4940 how BFD handles it, so reverse it here. */
4941 sym
.st_size
= value
;
4942 if (type_ptr
== NULL
4943 || type_ptr
->internal_elf_sym
.st_value
== 0)
4944 sym
.st_value
= value
>= 16 ? 16 : (1 << bfd_log2 (value
));
4946 sym
.st_value
= type_ptr
->internal_elf_sym
.st_value
;
4947 sym
.st_shndx
= _bfd_elf_section_from_bfd_section
4948 (abfd
, syms
[idx
]->section
);
4952 asection
*sec
= syms
[idx
]->section
;
4955 if (sec
->output_section
)
4957 value
+= sec
->output_offset
;
4958 sec
= sec
->output_section
;
4960 /* Don't add in the section vma for relocatable output. */
4961 if (! relocatable_p
)
4963 sym
.st_value
= value
;
4964 sym
.st_size
= type_ptr
? type_ptr
->internal_elf_sym
.st_size
: 0;
4966 if (bfd_is_abs_section (sec
)
4968 && type_ptr
->internal_elf_sym
.st_shndx
!= 0)
4970 /* This symbol is in a real ELF section which we did
4971 not create as a BFD section. Undo the mapping done
4972 by copy_private_symbol_data. */
4973 shndx
= type_ptr
->internal_elf_sym
.st_shndx
;
4977 shndx
= elf_onesymtab (abfd
);
4980 shndx
= elf_dynsymtab (abfd
);
4983 shndx
= elf_tdata (abfd
)->strtab_section
;
4986 shndx
= elf_tdata (abfd
)->shstrtab_section
;
4989 shndx
= elf_tdata (abfd
)->symtab_shndx_section
;
4997 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
5003 /* Writing this would be a hell of a lot easier if
5004 we had some decent documentation on bfd, and
5005 knew what to expect of the library, and what to
5006 demand of applications. For example, it
5007 appears that `objcopy' might not set the
5008 section of a symbol to be a section that is
5009 actually in the output file. */
5010 sec2
= bfd_get_section_by_name (abfd
, sec
->name
);
5011 BFD_ASSERT (sec2
!= 0);
5012 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec2
);
5013 BFD_ASSERT (shndx
!= -1);
5017 sym
.st_shndx
= shndx
;
5020 if ((flags
& BSF_FUNCTION
) != 0)
5022 else if ((flags
& BSF_OBJECT
) != 0)
5027 /* Processor-specific types */
5028 if (type_ptr
!= NULL
5029 && bed
->elf_backend_get_symbol_type
)
5030 type
= ((*bed
->elf_backend_get_symbol_type
)
5031 (&type_ptr
->internal_elf_sym
, type
));
5033 if (flags
& BSF_SECTION_SYM
)
5035 if (flags
& BSF_GLOBAL
)
5036 sym
.st_info
= ELF_ST_INFO (STB_GLOBAL
, STT_SECTION
);
5038 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_SECTION
);
5040 else if (bfd_is_com_section (syms
[idx
]->section
))
5041 sym
.st_info
= ELF_ST_INFO (STB_GLOBAL
, type
);
5042 else if (bfd_is_und_section (syms
[idx
]->section
))
5043 sym
.st_info
= ELF_ST_INFO (((flags
& BSF_WEAK
)
5047 else if (flags
& BSF_FILE
)
5048 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_FILE
);
5051 int bind
= STB_LOCAL
;
5053 if (flags
& BSF_LOCAL
)
5055 else if (flags
& BSF_WEAK
)
5057 else if (flags
& BSF_GLOBAL
)
5060 sym
.st_info
= ELF_ST_INFO (bind
, type
);
5063 if (type_ptr
!= NULL
)
5064 sym
.st_other
= type_ptr
->internal_elf_sym
.st_other
;
5068 bed
->s
->swap_symbol_out (abfd
, &sym
, outbound_syms
, outbound_shndx
);
5069 outbound_syms
+= bed
->s
->sizeof_sym
;
5070 if (outbound_shndx
!= NULL
)
5071 outbound_shndx
+= sizeof (Elf_External_Sym_Shndx
);
5075 symstrtab_hdr
->sh_size
= _bfd_stringtab_size (stt
);
5076 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
5078 symstrtab_hdr
->sh_flags
= 0;
5079 symstrtab_hdr
->sh_addr
= 0;
5080 symstrtab_hdr
->sh_entsize
= 0;
5081 symstrtab_hdr
->sh_link
= 0;
5082 symstrtab_hdr
->sh_info
= 0;
5083 symstrtab_hdr
->sh_addralign
= 1;
5088 /* Return the number of bytes required to hold the symtab vector.
5090 Note that we base it on the count plus 1, since we will null terminate
5091 the vector allocated based on this size. However, the ELF symbol table
5092 always has a dummy entry as symbol #0, so it ends up even. */
5095 _bfd_elf_get_symtab_upper_bound (abfd
)
5100 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->symtab_hdr
;
5102 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
5103 symtab_size
= (symcount
- 1 + 1) * (sizeof (asymbol
*));
5109 _bfd_elf_get_dynamic_symtab_upper_bound (abfd
)
5114 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->dynsymtab_hdr
;
5116 if (elf_dynsymtab (abfd
) == 0)
5118 bfd_set_error (bfd_error_invalid_operation
);
5122 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
5123 symtab_size
= (symcount
- 1 + 1) * (sizeof (asymbol
*));
5129 _bfd_elf_get_reloc_upper_bound (abfd
, asect
)
5130 bfd
*abfd ATTRIBUTE_UNUSED
;
5133 return (asect
->reloc_count
+ 1) * sizeof (arelent
*);
5136 /* Canonicalize the relocs. */
5139 _bfd_elf_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
5147 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
5149 if (! bed
->s
->slurp_reloc_table (abfd
, section
, symbols
, false))
5152 tblptr
= section
->relocation
;
5153 for (i
= 0; i
< section
->reloc_count
; i
++)
5154 *relptr
++ = tblptr
++;
5158 return section
->reloc_count
;
5162 _bfd_elf_get_symtab (abfd
, alocation
)
5164 asymbol
**alocation
;
5166 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
5167 long symcount
= bed
->s
->slurp_symbol_table (abfd
, alocation
, false);
5170 bfd_get_symcount (abfd
) = symcount
;
5175 _bfd_elf_canonicalize_dynamic_symtab (abfd
, alocation
)
5177 asymbol
**alocation
;
5179 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
5180 return bed
->s
->slurp_symbol_table (abfd
, alocation
, true);
5183 /* Return the size required for the dynamic reloc entries. Any
5184 section that was actually installed in the BFD, and has type
5185 SHT_REL or SHT_RELA, and uses the dynamic symbol table, is
5186 considered to be a dynamic reloc section. */
5189 _bfd_elf_get_dynamic_reloc_upper_bound (abfd
)
5195 if (elf_dynsymtab (abfd
) == 0)
5197 bfd_set_error (bfd_error_invalid_operation
);
5201 ret
= sizeof (arelent
*);
5202 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
5203 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
5204 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_REL
5205 || elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
5206 ret
+= ((s
->_raw_size
/ elf_section_data (s
)->this_hdr
.sh_entsize
)
5207 * sizeof (arelent
*));
5212 /* Canonicalize the dynamic relocation entries. Note that we return
5213 the dynamic relocations as a single block, although they are
5214 actually associated with particular sections; the interface, which
5215 was designed for SunOS style shared libraries, expects that there
5216 is only one set of dynamic relocs. Any section that was actually
5217 installed in the BFD, and has type SHT_REL or SHT_RELA, and uses
5218 the dynamic symbol table, is considered to be a dynamic reloc
5222 _bfd_elf_canonicalize_dynamic_reloc (abfd
, storage
, syms
)
5227 boolean (*slurp_relocs
) PARAMS ((bfd
*, asection
*, asymbol
**, boolean
));
5231 if (elf_dynsymtab (abfd
) == 0)
5233 bfd_set_error (bfd_error_invalid_operation
);
5237 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
5239 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
5241 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
5242 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_REL
5243 || elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
5248 if (! (*slurp_relocs
) (abfd
, s
, syms
, true))
5250 count
= s
->_raw_size
/ elf_section_data (s
)->this_hdr
.sh_entsize
;
5252 for (i
= 0; i
< count
; i
++)
5263 /* Read in the version information. */
5266 _bfd_elf_slurp_version_tables (abfd
)
5269 bfd_byte
*contents
= NULL
;
5272 if (elf_dynverdef (abfd
) != 0)
5274 Elf_Internal_Shdr
*hdr
;
5275 Elf_External_Verdef
*everdef
;
5276 Elf_Internal_Verdef
*iverdef
;
5277 Elf_Internal_Verdef
*iverdefarr
;
5278 Elf_Internal_Verdef iverdefmem
;
5280 unsigned int maxidx
;
5282 hdr
= &elf_tdata (abfd
)->dynverdef_hdr
;
5284 contents
= (bfd_byte
*) bfd_malloc (hdr
->sh_size
);
5285 if (contents
== NULL
)
5287 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
5288 || bfd_bread ((PTR
) contents
, hdr
->sh_size
, abfd
) != hdr
->sh_size
)
5291 /* We know the number of entries in the section but not the maximum
5292 index. Therefore we have to run through all entries and find
5294 everdef
= (Elf_External_Verdef
*) contents
;
5296 for (i
= 0; i
< hdr
->sh_info
; ++i
)
5298 _bfd_elf_swap_verdef_in (abfd
, everdef
, &iverdefmem
);
5300 if ((iverdefmem
.vd_ndx
& ((unsigned) VERSYM_VERSION
)) > maxidx
)
5301 maxidx
= iverdefmem
.vd_ndx
& ((unsigned) VERSYM_VERSION
);
5303 everdef
= ((Elf_External_Verdef
*)
5304 ((bfd_byte
*) everdef
+ iverdefmem
.vd_next
));
5307 amt
= (bfd_size_type
) maxidx
* sizeof (Elf_Internal_Verdef
);
5308 elf_tdata (abfd
)->verdef
= (Elf_Internal_Verdef
*) bfd_zalloc (abfd
, amt
);
5309 if (elf_tdata (abfd
)->verdef
== NULL
)
5312 elf_tdata (abfd
)->cverdefs
= maxidx
;
5314 everdef
= (Elf_External_Verdef
*) contents
;
5315 iverdefarr
= elf_tdata (abfd
)->verdef
;
5316 for (i
= 0; i
< hdr
->sh_info
; i
++)
5318 Elf_External_Verdaux
*everdaux
;
5319 Elf_Internal_Verdaux
*iverdaux
;
5322 _bfd_elf_swap_verdef_in (abfd
, everdef
, &iverdefmem
);
5324 iverdef
= &iverdefarr
[(iverdefmem
.vd_ndx
& VERSYM_VERSION
) - 1];
5325 memcpy (iverdef
, &iverdefmem
, sizeof (Elf_Internal_Verdef
));
5327 iverdef
->vd_bfd
= abfd
;
5329 amt
= (bfd_size_type
) iverdef
->vd_cnt
* sizeof (Elf_Internal_Verdaux
);
5330 iverdef
->vd_auxptr
= (Elf_Internal_Verdaux
*) bfd_alloc (abfd
, amt
);
5331 if (iverdef
->vd_auxptr
== NULL
)
5334 everdaux
= ((Elf_External_Verdaux
*)
5335 ((bfd_byte
*) everdef
+ iverdef
->vd_aux
));
5336 iverdaux
= iverdef
->vd_auxptr
;
5337 for (j
= 0; j
< iverdef
->vd_cnt
; j
++, iverdaux
++)
5339 _bfd_elf_swap_verdaux_in (abfd
, everdaux
, iverdaux
);
5341 iverdaux
->vda_nodename
=
5342 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
5343 iverdaux
->vda_name
);
5344 if (iverdaux
->vda_nodename
== NULL
)
5347 if (j
+ 1 < iverdef
->vd_cnt
)
5348 iverdaux
->vda_nextptr
= iverdaux
+ 1;
5350 iverdaux
->vda_nextptr
= NULL
;
5352 everdaux
= ((Elf_External_Verdaux
*)
5353 ((bfd_byte
*) everdaux
+ iverdaux
->vda_next
));
5356 iverdef
->vd_nodename
= iverdef
->vd_auxptr
->vda_nodename
;
5358 if (i
+ 1 < hdr
->sh_info
)
5359 iverdef
->vd_nextdef
= iverdef
+ 1;
5361 iverdef
->vd_nextdef
= NULL
;
5363 everdef
= ((Elf_External_Verdef
*)
5364 ((bfd_byte
*) everdef
+ iverdef
->vd_next
));
5371 if (elf_dynverref (abfd
) != 0)
5373 Elf_Internal_Shdr
*hdr
;
5374 Elf_External_Verneed
*everneed
;
5375 Elf_Internal_Verneed
*iverneed
;
5378 hdr
= &elf_tdata (abfd
)->dynverref_hdr
;
5380 amt
= (bfd_size_type
) hdr
->sh_info
* sizeof (Elf_Internal_Verneed
);
5381 elf_tdata (abfd
)->verref
=
5382 (Elf_Internal_Verneed
*) bfd_zalloc (abfd
, amt
);
5383 if (elf_tdata (abfd
)->verref
== NULL
)
5386 elf_tdata (abfd
)->cverrefs
= hdr
->sh_info
;
5388 contents
= (bfd_byte
*) bfd_malloc (hdr
->sh_size
);
5389 if (contents
== NULL
)
5391 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
5392 || bfd_bread ((PTR
) contents
, hdr
->sh_size
, abfd
) != hdr
->sh_size
)
5395 everneed
= (Elf_External_Verneed
*) contents
;
5396 iverneed
= elf_tdata (abfd
)->verref
;
5397 for (i
= 0; i
< hdr
->sh_info
; i
++, iverneed
++)
5399 Elf_External_Vernaux
*evernaux
;
5400 Elf_Internal_Vernaux
*ivernaux
;
5403 _bfd_elf_swap_verneed_in (abfd
, everneed
, iverneed
);
5405 iverneed
->vn_bfd
= abfd
;
5407 iverneed
->vn_filename
=
5408 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
5410 if (iverneed
->vn_filename
== NULL
)
5413 amt
= iverneed
->vn_cnt
;
5414 amt
*= sizeof (Elf_Internal_Vernaux
);
5415 iverneed
->vn_auxptr
= (Elf_Internal_Vernaux
*) bfd_alloc (abfd
, amt
);
5417 evernaux
= ((Elf_External_Vernaux
*)
5418 ((bfd_byte
*) everneed
+ iverneed
->vn_aux
));
5419 ivernaux
= iverneed
->vn_auxptr
;
5420 for (j
= 0; j
< iverneed
->vn_cnt
; j
++, ivernaux
++)
5422 _bfd_elf_swap_vernaux_in (abfd
, evernaux
, ivernaux
);
5424 ivernaux
->vna_nodename
=
5425 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
5426 ivernaux
->vna_name
);
5427 if (ivernaux
->vna_nodename
== NULL
)
5430 if (j
+ 1 < iverneed
->vn_cnt
)
5431 ivernaux
->vna_nextptr
= ivernaux
+ 1;
5433 ivernaux
->vna_nextptr
= NULL
;
5435 evernaux
= ((Elf_External_Vernaux
*)
5436 ((bfd_byte
*) evernaux
+ ivernaux
->vna_next
));
5439 if (i
+ 1 < hdr
->sh_info
)
5440 iverneed
->vn_nextref
= iverneed
+ 1;
5442 iverneed
->vn_nextref
= NULL
;
5444 everneed
= ((Elf_External_Verneed
*)
5445 ((bfd_byte
*) everneed
+ iverneed
->vn_next
));
5455 if (contents
== NULL
)
5461 _bfd_elf_make_empty_symbol (abfd
)
5464 elf_symbol_type
*newsym
;
5465 bfd_size_type amt
= sizeof (elf_symbol_type
);
5467 newsym
= (elf_symbol_type
*) bfd_zalloc (abfd
, amt
);
5472 newsym
->symbol
.the_bfd
= abfd
;
5473 return &newsym
->symbol
;
5478 _bfd_elf_get_symbol_info (ignore_abfd
, symbol
, ret
)
5479 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
5483 bfd_symbol_info (symbol
, ret
);
5486 /* Return whether a symbol name implies a local symbol. Most targets
5487 use this function for the is_local_label_name entry point, but some
5491 _bfd_elf_is_local_label_name (abfd
, name
)
5492 bfd
*abfd ATTRIBUTE_UNUSED
;
5495 /* Normal local symbols start with ``.L''. */
5496 if (name
[0] == '.' && name
[1] == 'L')
5499 /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate
5500 DWARF debugging symbols starting with ``..''. */
5501 if (name
[0] == '.' && name
[1] == '.')
5504 /* gcc will sometimes generate symbols beginning with ``_.L_'' when
5505 emitting DWARF debugging output. I suspect this is actually a
5506 small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call
5507 ASM_GENERATE_INTERNAL_LABEL, and this causes the leading
5508 underscore to be emitted on some ELF targets). For ease of use,
5509 we treat such symbols as local. */
5510 if (name
[0] == '_' && name
[1] == '.' && name
[2] == 'L' && name
[3] == '_')
5517 _bfd_elf_get_lineno (ignore_abfd
, symbol
)
5518 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
5519 asymbol
*symbol ATTRIBUTE_UNUSED
;
5526 _bfd_elf_set_arch_mach (abfd
, arch
, machine
)
5528 enum bfd_architecture arch
;
5529 unsigned long machine
;
5531 /* If this isn't the right architecture for this backend, and this
5532 isn't the generic backend, fail. */
5533 if (arch
!= get_elf_backend_data (abfd
)->arch
5534 && arch
!= bfd_arch_unknown
5535 && get_elf_backend_data (abfd
)->arch
!= bfd_arch_unknown
)
5538 return bfd_default_set_arch_mach (abfd
, arch
, machine
);
5541 /* Find the function to a particular section and offset,
5542 for error reporting. */
5545 elf_find_function (abfd
, section
, symbols
, offset
,
5546 filename_ptr
, functionname_ptr
)
5547 bfd
*abfd ATTRIBUTE_UNUSED
;
5551 const char **filename_ptr
;
5552 const char **functionname_ptr
;
5554 const char *filename
;
5563 for (p
= symbols
; *p
!= NULL
; p
++)
5567 q
= (elf_symbol_type
*) *p
;
5569 if (bfd_get_section (&q
->symbol
) != section
)
5572 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
5577 filename
= bfd_asymbol_name (&q
->symbol
);
5581 if (q
->symbol
.section
== section
5582 && q
->symbol
.value
>= low_func
5583 && q
->symbol
.value
<= offset
)
5585 func
= (asymbol
*) q
;
5586 low_func
= q
->symbol
.value
;
5596 *filename_ptr
= filename
;
5597 if (functionname_ptr
)
5598 *functionname_ptr
= bfd_asymbol_name (func
);
5603 /* Find the nearest line to a particular section and offset,
5604 for error reporting. */
5607 _bfd_elf_find_nearest_line (abfd
, section
, symbols
, offset
,
5608 filename_ptr
, functionname_ptr
, line_ptr
)
5613 const char **filename_ptr
;
5614 const char **functionname_ptr
;
5615 unsigned int *line_ptr
;
5619 if (_bfd_dwarf1_find_nearest_line (abfd
, section
, symbols
, offset
,
5620 filename_ptr
, functionname_ptr
,
5623 if (!*functionname_ptr
)
5624 elf_find_function (abfd
, section
, symbols
, offset
,
5625 *filename_ptr
? NULL
: filename_ptr
,
5631 if (_bfd_dwarf2_find_nearest_line (abfd
, section
, symbols
, offset
,
5632 filename_ptr
, functionname_ptr
,
5634 &elf_tdata (abfd
)->dwarf2_find_line_info
))
5636 if (!*functionname_ptr
)
5637 elf_find_function (abfd
, section
, symbols
, offset
,
5638 *filename_ptr
? NULL
: filename_ptr
,
5644 if (! _bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
5645 &found
, filename_ptr
,
5646 functionname_ptr
, line_ptr
,
5647 &elf_tdata (abfd
)->line_info
))
5652 if (symbols
== NULL
)
5655 if (! elf_find_function (abfd
, section
, symbols
, offset
,
5656 filename_ptr
, functionname_ptr
))
5664 _bfd_elf_sizeof_headers (abfd
, reloc
)
5670 ret
= get_elf_backend_data (abfd
)->s
->sizeof_ehdr
;
5672 ret
+= get_program_header_size (abfd
);
5677 _bfd_elf_set_section_contents (abfd
, section
, location
, offset
, count
)
5682 bfd_size_type count
;
5684 Elf_Internal_Shdr
*hdr
;
5687 if (! abfd
->output_has_begun
5688 && ! _bfd_elf_compute_section_file_positions
5689 (abfd
, (struct bfd_link_info
*) NULL
))
5692 hdr
= &elf_section_data (section
)->this_hdr
;
5693 pos
= hdr
->sh_offset
+ offset
;
5694 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0
5695 || bfd_bwrite (location
, count
, abfd
) != count
)
5702 _bfd_elf_no_info_to_howto (abfd
, cache_ptr
, dst
)
5703 bfd
*abfd ATTRIBUTE_UNUSED
;
5704 arelent
*cache_ptr ATTRIBUTE_UNUSED
;
5705 Elf_Internal_Rela
*dst ATTRIBUTE_UNUSED
;
5712 _bfd_elf_no_info_to_howto_rel (abfd
, cache_ptr
, dst
)
5715 Elf_Internal_Rel
*dst
;
5721 /* Try to convert a non-ELF reloc into an ELF one. */
5724 _bfd_elf_validate_reloc (abfd
, areloc
)
5728 /* Check whether we really have an ELF howto. */
5730 if ((*areloc
->sym_ptr_ptr
)->the_bfd
->xvec
!= abfd
->xvec
)
5732 bfd_reloc_code_real_type code
;
5733 reloc_howto_type
*howto
;
5735 /* Alien reloc: Try to determine its type to replace it with an
5736 equivalent ELF reloc. */
5738 if (areloc
->howto
->pc_relative
)
5740 switch (areloc
->howto
->bitsize
)
5743 code
= BFD_RELOC_8_PCREL
;
5746 code
= BFD_RELOC_12_PCREL
;
5749 code
= BFD_RELOC_16_PCREL
;
5752 code
= BFD_RELOC_24_PCREL
;
5755 code
= BFD_RELOC_32_PCREL
;
5758 code
= BFD_RELOC_64_PCREL
;
5764 howto
= bfd_reloc_type_lookup (abfd
, code
);
5766 if (areloc
->howto
->pcrel_offset
!= howto
->pcrel_offset
)
5768 if (howto
->pcrel_offset
)
5769 areloc
->addend
+= areloc
->address
;
5771 areloc
->addend
-= areloc
->address
; /* addend is unsigned!! */
5776 switch (areloc
->howto
->bitsize
)
5782 code
= BFD_RELOC_14
;
5785 code
= BFD_RELOC_16
;
5788 code
= BFD_RELOC_26
;
5791 code
= BFD_RELOC_32
;
5794 code
= BFD_RELOC_64
;
5800 howto
= bfd_reloc_type_lookup (abfd
, code
);
5804 areloc
->howto
= howto
;
5812 (*_bfd_error_handler
)
5813 (_("%s: unsupported relocation type %s"),
5814 bfd_archive_filename (abfd
), areloc
->howto
->name
);
5815 bfd_set_error (bfd_error_bad_value
);
5820 _bfd_elf_close_and_cleanup (abfd
)
5823 if (bfd_get_format (abfd
) == bfd_object
)
5825 if (elf_shstrtab (abfd
) != NULL
)
5826 _bfd_elf_strtab_free (elf_shstrtab (abfd
));
5829 return _bfd_generic_close_and_cleanup (abfd
);
5832 /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY
5833 in the relocation's offset. Thus we cannot allow any sort of sanity
5834 range-checking to interfere. There is nothing else to do in processing
5837 bfd_reloc_status_type
5838 _bfd_elf_rel_vtable_reloc_fn (abfd
, re
, symbol
, data
, is
, obfd
, errmsg
)
5839 bfd
*abfd ATTRIBUTE_UNUSED
;
5840 arelent
*re ATTRIBUTE_UNUSED
;
5841 struct symbol_cache_entry
*symbol ATTRIBUTE_UNUSED
;
5842 PTR data ATTRIBUTE_UNUSED
;
5843 asection
*is ATTRIBUTE_UNUSED
;
5844 bfd
*obfd ATTRIBUTE_UNUSED
;
5845 char **errmsg ATTRIBUTE_UNUSED
;
5847 return bfd_reloc_ok
;
5850 /* Elf core file support. Much of this only works on native
5851 toolchains, since we rely on knowing the
5852 machine-dependent procfs structure in order to pick
5853 out details about the corefile. */
5855 #ifdef HAVE_SYS_PROCFS_H
5856 # include <sys/procfs.h>
5859 /* FIXME: this is kinda wrong, but it's what gdb wants. */
5862 elfcore_make_pid (abfd
)
5865 return ((elf_tdata (abfd
)->core_lwpid
<< 16)
5866 + (elf_tdata (abfd
)->core_pid
));
5869 /* If there isn't a section called NAME, make one, using
5870 data from SECT. Note, this function will generate a
5871 reference to NAME, so you shouldn't deallocate or
5875 elfcore_maybe_make_sect (abfd
, name
, sect
)
5882 if (bfd_get_section_by_name (abfd
, name
) != NULL
)
5885 sect2
= bfd_make_section (abfd
, name
);
5889 sect2
->_raw_size
= sect
->_raw_size
;
5890 sect2
->filepos
= sect
->filepos
;
5891 sect2
->flags
= sect
->flags
;
5892 sect2
->alignment_power
= sect
->alignment_power
;
5896 /* Create a pseudosection containing SIZE bytes at FILEPOS. This
5897 actually creates up to two pseudosections:
5898 - For the single-threaded case, a section named NAME, unless
5899 such a section already exists.
5900 - For the multi-threaded case, a section named "NAME/PID", where
5901 PID is elfcore_make_pid (abfd).
5902 Both pseudosections have identical contents. */
5904 _bfd_elfcore_make_pseudosection (abfd
, name
, size
, filepos
)
5911 char *threaded_name
;
5914 /* Build the section name. */
5916 sprintf (buf
, "%s/%d", name
, elfcore_make_pid (abfd
));
5917 threaded_name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
5918 if (threaded_name
== NULL
)
5920 strcpy (threaded_name
, buf
);
5922 sect
= bfd_make_section (abfd
, threaded_name
);
5925 sect
->_raw_size
= size
;
5926 sect
->filepos
= filepos
;
5927 sect
->flags
= SEC_HAS_CONTENTS
;
5928 sect
->alignment_power
= 2;
5930 return elfcore_maybe_make_sect (abfd
, name
, sect
);
5933 /* prstatus_t exists on:
5935 linux 2.[01] + glibc
5939 #if defined (HAVE_PRSTATUS_T)
5940 static boolean elfcore_grok_prstatus
PARAMS ((bfd
*, Elf_Internal_Note
*));
5943 elfcore_grok_prstatus (abfd
, note
)
5945 Elf_Internal_Note
*note
;
5950 if (note
->descsz
== sizeof (prstatus_t
))
5954 raw_size
= sizeof (prstat
.pr_reg
);
5955 offset
= offsetof (prstatus_t
, pr_reg
);
5956 memcpy (&prstat
, note
->descdata
, sizeof (prstat
));
5958 /* Do not overwrite the core signal if it
5959 has already been set by another thread. */
5960 if (elf_tdata (abfd
)->core_signal
== 0)
5961 elf_tdata (abfd
)->core_signal
= prstat
.pr_cursig
;
5962 elf_tdata (abfd
)->core_pid
= prstat
.pr_pid
;
5964 /* pr_who exists on:
5967 pr_who doesn't exist on:
5970 #if defined (HAVE_PRSTATUS_T_PR_WHO)
5971 elf_tdata (abfd
)->core_lwpid
= prstat
.pr_who
;
5974 #if defined (HAVE_PRSTATUS32_T)
5975 else if (note
->descsz
== sizeof (prstatus32_t
))
5977 /* 64-bit host, 32-bit corefile */
5978 prstatus32_t prstat
;
5980 raw_size
= sizeof (prstat
.pr_reg
);
5981 offset
= offsetof (prstatus32_t
, pr_reg
);
5982 memcpy (&prstat
, note
->descdata
, sizeof (prstat
));
5984 /* Do not overwrite the core signal if it
5985 has already been set by another thread. */
5986 if (elf_tdata (abfd
)->core_signal
== 0)
5987 elf_tdata (abfd
)->core_signal
= prstat
.pr_cursig
;
5988 elf_tdata (abfd
)->core_pid
= prstat
.pr_pid
;
5990 /* pr_who exists on:
5993 pr_who doesn't exist on:
5996 #if defined (HAVE_PRSTATUS32_T_PR_WHO)
5997 elf_tdata (abfd
)->core_lwpid
= prstat
.pr_who
;
6000 #endif /* HAVE_PRSTATUS32_T */
6003 /* Fail - we don't know how to handle any other
6004 note size (ie. data object type). */
6008 /* Make a ".reg/999" section and a ".reg" section. */
6009 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
6010 raw_size
, note
->descpos
+ offset
);
6012 #endif /* defined (HAVE_PRSTATUS_T) */
6014 /* Create a pseudosection containing the exact contents of NOTE. */
6016 elfcore_make_note_pseudosection (abfd
, name
, note
)
6019 Elf_Internal_Note
*note
;
6021 return _bfd_elfcore_make_pseudosection (abfd
, name
,
6022 note
->descsz
, note
->descpos
);
6025 /* There isn't a consistent prfpregset_t across platforms,
6026 but it doesn't matter, because we don't have to pick this
6027 data structure apart. */
6030 elfcore_grok_prfpreg (abfd
, note
)
6032 Elf_Internal_Note
*note
;
6034 return elfcore_make_note_pseudosection (abfd
, ".reg2", note
);
6037 /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note
6038 type of 5 (NT_PRXFPREG). Just include the whole note's contents
6042 elfcore_grok_prxfpreg (abfd
, note
)
6044 Elf_Internal_Note
*note
;
6046 return elfcore_make_note_pseudosection (abfd
, ".reg-xfp", note
);
6049 #if defined (HAVE_PRPSINFO_T)
6050 typedef prpsinfo_t elfcore_psinfo_t
;
6051 #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */
6052 typedef prpsinfo32_t elfcore_psinfo32_t
;
6056 #if defined (HAVE_PSINFO_T)
6057 typedef psinfo_t elfcore_psinfo_t
;
6058 #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */
6059 typedef psinfo32_t elfcore_psinfo32_t
;
6063 /* return a malloc'ed copy of a string at START which is at
6064 most MAX bytes long, possibly without a terminating '\0'.
6065 the copy will always have a terminating '\0'. */
6068 _bfd_elfcore_strndup (abfd
, start
, max
)
6074 char *end
= memchr (start
, '\0', max
);
6082 dups
= bfd_alloc (abfd
, (bfd_size_type
) len
+ 1);
6086 memcpy (dups
, start
, len
);
6092 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
6093 static boolean elfcore_grok_psinfo
PARAMS ((bfd
*, Elf_Internal_Note
*));
6096 elfcore_grok_psinfo (abfd
, note
)
6098 Elf_Internal_Note
*note
;
6100 if (note
->descsz
== sizeof (elfcore_psinfo_t
))
6102 elfcore_psinfo_t psinfo
;
6104 memcpy (&psinfo
, note
->descdata
, sizeof (psinfo
));
6106 elf_tdata (abfd
)->core_program
6107 = _bfd_elfcore_strndup (abfd
, psinfo
.pr_fname
,
6108 sizeof (psinfo
.pr_fname
));
6110 elf_tdata (abfd
)->core_command
6111 = _bfd_elfcore_strndup (abfd
, psinfo
.pr_psargs
,
6112 sizeof (psinfo
.pr_psargs
));
6114 #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T)
6115 else if (note
->descsz
== sizeof (elfcore_psinfo32_t
))
6117 /* 64-bit host, 32-bit corefile */
6118 elfcore_psinfo32_t psinfo
;
6120 memcpy (&psinfo
, note
->descdata
, sizeof (psinfo
));
6122 elf_tdata (abfd
)->core_program
6123 = _bfd_elfcore_strndup (abfd
, psinfo
.pr_fname
,
6124 sizeof (psinfo
.pr_fname
));
6126 elf_tdata (abfd
)->core_command
6127 = _bfd_elfcore_strndup (abfd
, psinfo
.pr_psargs
,
6128 sizeof (psinfo
.pr_psargs
));
6134 /* Fail - we don't know how to handle any other
6135 note size (ie. data object type). */
6139 /* Note that for some reason, a spurious space is tacked
6140 onto the end of the args in some (at least one anyway)
6141 implementations, so strip it off if it exists. */
6144 char *command
= elf_tdata (abfd
)->core_command
;
6145 int n
= strlen (command
);
6147 if (0 < n
&& command
[n
- 1] == ' ')
6148 command
[n
- 1] = '\0';
6153 #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */
6155 #if defined (HAVE_PSTATUS_T)
6157 elfcore_grok_pstatus (abfd
, note
)
6159 Elf_Internal_Note
*note
;
6161 if (note
->descsz
== sizeof (pstatus_t
)
6162 #if defined (HAVE_PXSTATUS_T)
6163 || note
->descsz
== sizeof (pxstatus_t
)
6169 memcpy (&pstat
, note
->descdata
, sizeof (pstat
));
6171 elf_tdata (abfd
)->core_pid
= pstat
.pr_pid
;
6173 #if defined (HAVE_PSTATUS32_T)
6174 else if (note
->descsz
== sizeof (pstatus32_t
))
6176 /* 64-bit host, 32-bit corefile */
6179 memcpy (&pstat
, note
->descdata
, sizeof (pstat
));
6181 elf_tdata (abfd
)->core_pid
= pstat
.pr_pid
;
6184 /* Could grab some more details from the "representative"
6185 lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an
6186 NT_LWPSTATUS note, presumably. */
6190 #endif /* defined (HAVE_PSTATUS_T) */
6192 #if defined (HAVE_LWPSTATUS_T)
6194 elfcore_grok_lwpstatus (abfd
, note
)
6196 Elf_Internal_Note
*note
;
6198 lwpstatus_t lwpstat
;
6203 if (note
->descsz
!= sizeof (lwpstat
)
6204 #if defined (HAVE_LWPXSTATUS_T)
6205 && note
->descsz
!= sizeof (lwpxstatus_t
)
6210 memcpy (&lwpstat
, note
->descdata
, sizeof (lwpstat
));
6212 elf_tdata (abfd
)->core_lwpid
= lwpstat
.pr_lwpid
;
6213 elf_tdata (abfd
)->core_signal
= lwpstat
.pr_cursig
;
6215 /* Make a ".reg/999" section. */
6217 sprintf (buf
, ".reg/%d", elfcore_make_pid (abfd
));
6218 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
6223 sect
= bfd_make_section (abfd
, name
);
6227 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
6228 sect
->_raw_size
= sizeof (lwpstat
.pr_context
.uc_mcontext
.gregs
);
6229 sect
->filepos
= note
->descpos
6230 + offsetof (lwpstatus_t
, pr_context
.uc_mcontext
.gregs
);
6233 #if defined (HAVE_LWPSTATUS_T_PR_REG)
6234 sect
->_raw_size
= sizeof (lwpstat
.pr_reg
);
6235 sect
->filepos
= note
->descpos
+ offsetof (lwpstatus_t
, pr_reg
);
6238 sect
->flags
= SEC_HAS_CONTENTS
;
6239 sect
->alignment_power
= 2;
6241 if (!elfcore_maybe_make_sect (abfd
, ".reg", sect
))
6244 /* Make a ".reg2/999" section */
6246 sprintf (buf
, ".reg2/%d", elfcore_make_pid (abfd
));
6247 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
6252 sect
= bfd_make_section (abfd
, name
);
6256 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
6257 sect
->_raw_size
= sizeof (lwpstat
.pr_context
.uc_mcontext
.fpregs
);
6258 sect
->filepos
= note
->descpos
6259 + offsetof (lwpstatus_t
, pr_context
.uc_mcontext
.fpregs
);
6262 #if defined (HAVE_LWPSTATUS_T_PR_FPREG)
6263 sect
->_raw_size
= sizeof (lwpstat
.pr_fpreg
);
6264 sect
->filepos
= note
->descpos
+ offsetof (lwpstatus_t
, pr_fpreg
);
6267 sect
->flags
= SEC_HAS_CONTENTS
;
6268 sect
->alignment_power
= 2;
6270 return elfcore_maybe_make_sect (abfd
, ".reg2", sect
);
6272 #endif /* defined (HAVE_LWPSTATUS_T) */
6274 #if defined (HAVE_WIN32_PSTATUS_T)
6276 elfcore_grok_win32pstatus (abfd
, note
)
6278 Elf_Internal_Note
*note
;
6283 win32_pstatus_t pstatus
;
6285 if (note
->descsz
< sizeof (pstatus
))
6288 memcpy (&pstatus
, note
->descdata
, sizeof (pstatus
));
6290 switch (pstatus
.data_type
)
6292 case NOTE_INFO_PROCESS
:
6293 /* FIXME: need to add ->core_command. */
6294 elf_tdata (abfd
)->core_signal
= pstatus
.data
.process_info
.signal
;
6295 elf_tdata (abfd
)->core_pid
= pstatus
.data
.process_info
.pid
;
6298 case NOTE_INFO_THREAD
:
6299 /* Make a ".reg/999" section. */
6300 sprintf (buf
, ".reg/%d", pstatus
.data
.thread_info
.tid
);
6302 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
6308 sect
= bfd_make_section (abfd
, name
);
6312 sect
->_raw_size
= sizeof (pstatus
.data
.thread_info
.thread_context
);
6313 sect
->filepos
= (note
->descpos
6314 + offsetof (struct win32_pstatus
,
6315 data
.thread_info
.thread_context
));
6316 sect
->flags
= SEC_HAS_CONTENTS
;
6317 sect
->alignment_power
= 2;
6319 if (pstatus
.data
.thread_info
.is_active_thread
)
6320 if (! elfcore_maybe_make_sect (abfd
, ".reg", sect
))
6324 case NOTE_INFO_MODULE
:
6325 /* Make a ".module/xxxxxxxx" section. */
6326 sprintf (buf
, ".module/%08x", pstatus
.data
.module_info
.base_address
);
6328 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
6334 sect
= bfd_make_section (abfd
, name
);
6339 sect
->_raw_size
= note
->descsz
;
6340 sect
->filepos
= note
->descpos
;
6341 sect
->flags
= SEC_HAS_CONTENTS
;
6342 sect
->alignment_power
= 2;
6351 #endif /* HAVE_WIN32_PSTATUS_T */
6354 elfcore_grok_note (abfd
, note
)
6356 Elf_Internal_Note
*note
;
6358 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
6366 if (bed
->elf_backend_grok_prstatus
)
6367 if ((*bed
->elf_backend_grok_prstatus
) (abfd
, note
))
6369 #if defined (HAVE_PRSTATUS_T)
6370 return elfcore_grok_prstatus (abfd
, note
);
6375 #if defined (HAVE_PSTATUS_T)
6377 return elfcore_grok_pstatus (abfd
, note
);
6380 #if defined (HAVE_LWPSTATUS_T)
6382 return elfcore_grok_lwpstatus (abfd
, note
);
6385 case NT_FPREGSET
: /* FIXME: rename to NT_PRFPREG */
6386 return elfcore_grok_prfpreg (abfd
, note
);
6388 #if defined (HAVE_WIN32_PSTATUS_T)
6389 case NT_WIN32PSTATUS
:
6390 return elfcore_grok_win32pstatus (abfd
, note
);
6393 case NT_PRXFPREG
: /* Linux SSE extension */
6394 if (note
->namesz
== 5
6395 && ! strcmp (note
->namedata
, "LINUX"))
6396 return elfcore_grok_prxfpreg (abfd
, note
);
6402 if (bed
->elf_backend_grok_psinfo
)
6403 if ((*bed
->elf_backend_grok_psinfo
) (abfd
, note
))
6405 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
6406 return elfcore_grok_psinfo (abfd
, note
);
6414 elfcore_netbsd_get_lwpid (note
, lwpidp
)
6415 Elf_Internal_Note
*note
;
6420 cp
= strchr (note
->namedata
, '@');
6430 elfcore_grok_netbsd_procinfo (abfd
, note
)
6432 Elf_Internal_Note
*note
;
6435 /* Signal number at offset 0x08. */
6436 elf_tdata (abfd
)->core_signal
6437 = bfd_h_get_32 (abfd
, (bfd_byte
*) note
->descdata
+ 0x08);
6439 /* Process ID at offset 0x50. */
6440 elf_tdata (abfd
)->core_pid
6441 = bfd_h_get_32 (abfd
, (bfd_byte
*) note
->descdata
+ 0x50);
6443 /* Command name at 0x7c (max 32 bytes, including nul). */
6444 elf_tdata (abfd
)->core_command
6445 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 0x7c, 31);
6451 elfcore_grok_netbsd_note (abfd
, note
)
6453 Elf_Internal_Note
*note
;
6457 if (elfcore_netbsd_get_lwpid (note
, &lwp
))
6458 elf_tdata (abfd
)->core_lwpid
= lwp
;
6460 if (note
->type
== NT_NETBSDCORE_PROCINFO
)
6462 /* NetBSD-specific core "procinfo". Note that we expect to
6463 find this note before any of the others, which is fine,
6464 since the kernel writes this note out first when it
6465 creates a core file. */
6467 return elfcore_grok_netbsd_procinfo (abfd
, note
);
6470 /* As of Jan 2002 there are no other machine-independent notes
6471 defined for NetBSD core files. If the note type is less
6472 than the start of the machine-dependent note types, we don't
6475 if (note
->type
< NT_NETBSDCORE_FIRSTMACH
)
6479 switch (bfd_get_arch (abfd
))
6481 /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and
6482 PT_GETFPREGS == mach+2. */
6484 case bfd_arch_alpha
:
6485 case bfd_arch_sparc
:
6488 case NT_NETBSDCORE_FIRSTMACH
+0:
6489 return elfcore_make_note_pseudosection (abfd
, ".reg", note
);
6491 case NT_NETBSDCORE_FIRSTMACH
+2:
6492 return elfcore_make_note_pseudosection (abfd
, ".reg2", note
);
6498 /* On all other arch's, PT_GETREGS == mach+1 and
6499 PT_GETFPREGS == mach+3. */
6504 case NT_NETBSDCORE_FIRSTMACH
+1:
6505 return elfcore_make_note_pseudosection (abfd
, ".reg", note
);
6507 case NT_NETBSDCORE_FIRSTMACH
+3:
6508 return elfcore_make_note_pseudosection (abfd
, ".reg2", note
);
6517 /* Function: elfcore_write_note
6524 size of data for note
6527 End of buffer containing note. */
6530 elfcore_write_note (abfd
, buf
, bufsiz
, name
, type
, input
, size
)
6539 Elf_External_Note
*xnp
;
6540 int namesz
= strlen (name
);
6541 int newspace
= BFD_ALIGN (sizeof (Elf_External_Note
) + size
+ namesz
- 1, 4);
6544 p
= realloc (buf
, *bufsiz
+ newspace
);
6546 *bufsiz
+= newspace
;
6547 xnp
= (Elf_External_Note
*) dest
;
6548 H_PUT_32 (abfd
, namesz
, xnp
->namesz
);
6549 H_PUT_32 (abfd
, size
, xnp
->descsz
);
6550 H_PUT_32 (abfd
, type
, xnp
->type
);
6551 strcpy (xnp
->name
, name
);
6552 memcpy (xnp
->name
+ BFD_ALIGN (namesz
, 4), input
, size
);
6556 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
6558 elfcore_write_prpsinfo (abfd
, buf
, bufsiz
, fname
, psargs
)
6566 char *note_name
= "CORE";
6568 #if defined (HAVE_PSINFO_T)
6570 note_type
= NT_PSINFO
;
6573 note_type
= NT_PRPSINFO
;
6576 memset (&data
, 0, sizeof (data
));
6577 strncpy (data
.pr_fname
, fname
, sizeof (data
.pr_fname
));
6578 strncpy (data
.pr_psargs
, psargs
, sizeof (data
.pr_psargs
));
6579 return elfcore_write_note (abfd
, buf
, bufsiz
,
6580 note_name
, note_type
, &data
, sizeof (data
));
6582 #endif /* PSINFO_T or PRPSINFO_T */
6584 #if defined (HAVE_PRSTATUS_T)
6586 elfcore_write_prstatus (abfd
, buf
, bufsiz
, pid
, cursig
, gregs
)
6595 char *note_name
= "CORE";
6597 memset (&prstat
, 0, sizeof (prstat
));
6598 prstat
.pr_pid
= pid
;
6599 prstat
.pr_cursig
= cursig
;
6600 memcpy (&prstat
.pr_reg
, gregs
, sizeof (prstat
.pr_reg
));
6601 return elfcore_write_note (abfd
, buf
, bufsiz
,
6602 note_name
, NT_PRSTATUS
, &prstat
, sizeof (prstat
));
6604 #endif /* HAVE_PRSTATUS_T */
6606 #if defined (HAVE_PSTATUS_T)
6608 elfcore_write_pstatus (abfd
, buf
, bufsiz
, pid
, cursig
, gregs
)
6617 char *note_name
= "CORE";
6619 memset (&pstat
, 0, sizeof (prstat
));
6621 memcpy (pstat
.pr_reg
, gregs
, sizeof (pstat
.pr_reg
));
6622 return elfcore_write_note (abfd
, buf
, bufsiz
,
6623 note_name
, NT_PSTATUS
, &pstat
, sizeof (pstat
));
6625 #endif /* HAVE_PSTATUS_T */
6628 elfcore_write_prfpreg (abfd
, buf
, bufsiz
, fpregs
, size
)
6635 char *note_name
= "CORE";
6636 return elfcore_write_note (abfd
, buf
, bufsiz
,
6637 note_name
, NT_FPREGSET
, fpregs
, size
);
6641 elfcore_write_prxfpreg (abfd
, buf
, bufsiz
, xfpregs
, size
)
6648 char *note_name
= "LINUX";
6649 return elfcore_write_note (abfd
, buf
, bufsiz
,
6650 note_name
, NT_PRXFPREG
, xfpregs
, size
);
6654 elfcore_read_notes (abfd
, offset
, size
)
6665 if (bfd_seek (abfd
, offset
, SEEK_SET
) != 0)
6668 buf
= bfd_malloc (size
);
6672 if (bfd_bread (buf
, size
, abfd
) != size
)
6680 while (p
< buf
+ size
)
6682 /* FIXME: bad alignment assumption. */
6683 Elf_External_Note
*xnp
= (Elf_External_Note
*) p
;
6684 Elf_Internal_Note in
;
6686 in
.type
= H_GET_32 (abfd
, xnp
->type
);
6688 in
.namesz
= H_GET_32 (abfd
, xnp
->namesz
);
6689 in
.namedata
= xnp
->name
;
6691 in
.descsz
= H_GET_32 (abfd
, xnp
->descsz
);
6692 in
.descdata
= in
.namedata
+ BFD_ALIGN (in
.namesz
, 4);
6693 in
.descpos
= offset
+ (in
.descdata
- buf
);
6695 if (strncmp (in
.namedata
, "NetBSD-CORE", 11) == 0)
6697 if (! elfcore_grok_netbsd_note (abfd
, &in
))
6702 if (! elfcore_grok_note (abfd
, &in
))
6706 p
= in
.descdata
+ BFD_ALIGN (in
.descsz
, 4);
6713 /* Providing external access to the ELF program header table. */
6715 /* Return an upper bound on the number of bytes required to store a
6716 copy of ABFD's program header table entries. Return -1 if an error
6717 occurs; bfd_get_error will return an appropriate code. */
6720 bfd_get_elf_phdr_upper_bound (abfd
)
6723 if (abfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
6725 bfd_set_error (bfd_error_wrong_format
);
6729 return elf_elfheader (abfd
)->e_phnum
* sizeof (Elf_Internal_Phdr
);
6732 /* Copy ABFD's program header table entries to *PHDRS. The entries
6733 will be stored as an array of Elf_Internal_Phdr structures, as
6734 defined in include/elf/internal.h. To find out how large the
6735 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
6737 Return the number of program header table entries read, or -1 if an
6738 error occurs; bfd_get_error will return an appropriate code. */
6741 bfd_get_elf_phdrs (abfd
, phdrs
)
6747 if (abfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
6749 bfd_set_error (bfd_error_wrong_format
);
6753 num_phdrs
= elf_elfheader (abfd
)->e_phnum
;
6754 memcpy (phdrs
, elf_tdata (abfd
)->phdr
,
6755 num_phdrs
* sizeof (Elf_Internal_Phdr
));
6761 _bfd_elf_sprintf_vma (abfd
, buf
, value
)
6762 bfd
*abfd ATTRIBUTE_UNUSED
;
6767 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
6769 i_ehdrp
= elf_elfheader (abfd
);
6770 if (i_ehdrp
== NULL
)
6771 sprintf_vma (buf
, value
);
6774 if (i_ehdrp
->e_ident
[EI_CLASS
] == ELFCLASS64
)
6776 #if BFD_HOST_64BIT_LONG
6777 sprintf (buf
, "%016lx", value
);
6779 sprintf (buf
, "%08lx%08lx", _bfd_int64_high (value
),
6780 _bfd_int64_low (value
));
6784 sprintf (buf
, "%08lx", (unsigned long) (value
& 0xffffffff));
6787 sprintf_vma (buf
, value
);
6792 _bfd_elf_fprintf_vma (abfd
, stream
, value
)
6793 bfd
*abfd ATTRIBUTE_UNUSED
;
6798 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
6800 i_ehdrp
= elf_elfheader (abfd
);
6801 if (i_ehdrp
== NULL
)
6802 fprintf_vma ((FILE *) stream
, value
);
6805 if (i_ehdrp
->e_ident
[EI_CLASS
] == ELFCLASS64
)
6807 #if BFD_HOST_64BIT_LONG
6808 fprintf ((FILE *) stream
, "%016lx", value
);
6810 fprintf ((FILE *) stream
, "%08lx%08lx",
6811 _bfd_int64_high (value
), _bfd_int64_low (value
));
6815 fprintf ((FILE *) stream
, "%08lx",
6816 (unsigned long) (value
& 0xffffffff));
6819 fprintf_vma ((FILE *) stream
, value
);
6823 enum elf_reloc_type_class
6824 _bfd_elf_reloc_type_class (rela
)
6825 const Elf_Internal_Rela
*rela ATTRIBUTE_UNUSED
;
6827 return reloc_class_normal
;
6830 /* For RELA architectures, return what the relocation value for
6831 relocation against a local symbol. */
6834 _bfd_elf_rela_local_sym (abfd
, sym
, sec
, rel
)
6836 Elf_Internal_Sym
*sym
;
6838 Elf_Internal_Rela
*rel
;
6842 relocation
= (sec
->output_section
->vma
6843 + sec
->output_offset
6845 if ((sec
->flags
& SEC_MERGE
)
6846 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
6847 && elf_section_data (sec
)->sec_info_type
== ELF_INFO_TYPE_MERGE
)
6853 _bfd_merged_section_offset (abfd
, &msec
,
6854 elf_section_data (sec
)->sec_info
,
6855 sym
->st_value
+ rel
->r_addend
,
6858 rel
->r_addend
+= msec
->output_section
->vma
+ msec
->output_offset
;
6864 _bfd_elf_rel_local_sym (abfd
, sym
, psec
, addend
)
6866 Elf_Internal_Sym
*sym
;
6870 asection
*sec
= *psec
;
6872 if (elf_section_data (sec
)->sec_info_type
!= ELF_INFO_TYPE_MERGE
)
6873 return sym
->st_value
+ addend
;
6875 return _bfd_merged_section_offset (abfd
, psec
,
6876 elf_section_data (sec
)->sec_info
,
6877 sym
->st_value
+ addend
, (bfd_vma
) 0);
6881 _bfd_elf_section_offset (abfd
, info
, sec
, offset
)
6883 struct bfd_link_info
*info
;
6887 struct bfd_elf_section_data
*sec_data
;
6889 sec_data
= elf_section_data (sec
);
6890 switch (sec_data
->sec_info_type
)
6892 case ELF_INFO_TYPE_STABS
:
6893 return _bfd_stab_section_offset
6894 (abfd
, &elf_hash_table (info
)->merge_info
, sec
, &sec_data
->sec_info
,
6896 case ELF_INFO_TYPE_EH_FRAME
:
6897 return _bfd_elf_eh_frame_section_offset (abfd
, sec
, offset
);