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 || (asect
->flags
& SEC_NEVER_LOAD
) != 0))
2224 this_hdr
->sh_type
= SHT_NOBITS
;
2226 this_hdr
->sh_type
= SHT_PROGBITS
;
2228 if ((asect
->flags
& SEC_ALLOC
) != 0)
2229 this_hdr
->sh_flags
|= SHF_ALLOC
;
2230 if ((asect
->flags
& SEC_READONLY
) == 0)
2231 this_hdr
->sh_flags
|= SHF_WRITE
;
2232 if ((asect
->flags
& SEC_CODE
) != 0)
2233 this_hdr
->sh_flags
|= SHF_EXECINSTR
;
2234 if ((asect
->flags
& SEC_MERGE
) != 0)
2236 this_hdr
->sh_flags
|= SHF_MERGE
;
2237 this_hdr
->sh_entsize
= asect
->entsize
;
2238 if ((asect
->flags
& SEC_STRINGS
) != 0)
2239 this_hdr
->sh_flags
|= SHF_STRINGS
;
2241 if (elf_group_name (asect
) != NULL
)
2242 this_hdr
->sh_flags
|= SHF_GROUP
;
2244 /* Check for processor-specific section types. */
2245 if (bed
->elf_backend_fake_sections
2246 && !(*bed
->elf_backend_fake_sections
) (abfd
, this_hdr
, asect
))
2249 /* If the section has relocs, set up a section header for the
2250 SHT_REL[A] section. If two relocation sections are required for
2251 this section, it is up to the processor-specific back-end to
2252 create the other. */
2253 if ((asect
->flags
& SEC_RELOC
) != 0
2254 && !_bfd_elf_init_reloc_shdr (abfd
,
2255 &elf_section_data (asect
)->rel_hdr
,
2257 elf_section_data (asect
)->use_rela_p
))
2261 /* Fill in the contents of a SHT_GROUP section. */
2264 set_group_contents (abfd
, sec
, failedptrarg
)
2267 PTR failedptrarg ATTRIBUTE_UNUSED
;
2269 boolean
*failedptr
= (boolean
*) failedptrarg
;
2270 unsigned long symindx
;
2273 struct bfd_link_order
*l
;
2275 if (elf_section_data (sec
)->this_hdr
.sh_type
!= SHT_GROUP
2279 /* If called from the assembler, swap_out_syms will have set up
2280 elf_section_syms; If called for "ld -r", the symbols won't yet
2281 be mapped, so emulate elf_bfd_final_link. */
2282 if (elf_section_syms (abfd
) != NULL
)
2283 symindx
= elf_section_syms (abfd
)[sec
->index
]->udata
.i
;
2285 symindx
= elf_section_data (sec
)->this_idx
;
2286 elf_section_data (sec
)->this_hdr
.sh_info
= symindx
;
2288 /* Nor will the contents be allocated for "ld -r". */
2289 if (sec
->contents
== NULL
)
2291 sec
->contents
= bfd_alloc (abfd
, sec
->_raw_size
);
2292 if (sec
->contents
== NULL
)
2299 loc
= sec
->contents
+ sec
->_raw_size
;
2301 /* Get the pointer to the first section in the group that we
2302 squirreled away here. */
2303 elt
= elf_next_in_group (sec
);
2305 /* First element is a flag word. Rest of section is elf section
2306 indices for all the sections of the group. Write them backwards
2307 just to keep the group in the same order as given in .section
2308 directives, not that it matters. */
2312 H_PUT_32 (abfd
, elf_section_data (elt
)->this_idx
, loc
);
2313 elt
= elf_next_in_group (elt
);
2316 /* If this is a relocatable link, then the above did nothing because
2317 SEC is the output section. Look through the input sections
2319 for (l
= sec
->link_order_head
; l
!= NULL
; l
= l
->next
)
2320 if (l
->type
== bfd_indirect_link_order
2321 && (elt
= elf_next_in_group (l
->u
.indirect
.section
)) != NULL
)
2326 elf_section_data (elt
->output_section
)->this_idx
, loc
);
2327 elt
= elf_next_in_group (elt
);
2328 /* During a relocatable link, the lists are circular. */
2330 while (elt
!= elf_next_in_group (l
->u
.indirect
.section
));
2333 H_PUT_32 (abfd
, 0, loc
);
2335 BFD_ASSERT (loc
== sec
->contents
);
2338 /* Assign all ELF section numbers. The dummy first section is handled here
2339 too. The link/info pointers for the standard section types are filled
2340 in here too, while we're at it. */
2343 assign_section_numbers (abfd
)
2346 struct elf_obj_tdata
*t
= elf_tdata (abfd
);
2348 unsigned int section_number
, secn
;
2349 Elf_Internal_Shdr
**i_shdrp
;
2354 _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd
));
2356 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
2358 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
2360 if (section_number
== SHN_LORESERVE
)
2361 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2362 d
->this_idx
= section_number
++;
2363 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), d
->this_hdr
.sh_name
);
2364 if ((sec
->flags
& SEC_RELOC
) == 0)
2368 if (section_number
== SHN_LORESERVE
)
2369 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2370 d
->rel_idx
= section_number
++;
2371 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), d
->rel_hdr
.sh_name
);
2376 if (section_number
== SHN_LORESERVE
)
2377 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2378 d
->rel_idx2
= section_number
++;
2379 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), d
->rel_hdr2
->sh_name
);
2385 if (section_number
== SHN_LORESERVE
)
2386 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2387 t
->shstrtab_section
= section_number
++;
2388 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), t
->shstrtab_hdr
.sh_name
);
2389 elf_elfheader (abfd
)->e_shstrndx
= t
->shstrtab_section
;
2391 if (bfd_get_symcount (abfd
) > 0)
2393 if (section_number
== SHN_LORESERVE
)
2394 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2395 t
->symtab_section
= section_number
++;
2396 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), t
->symtab_hdr
.sh_name
);
2397 if (section_number
> SHN_LORESERVE
- 2)
2399 if (section_number
== SHN_LORESERVE
)
2400 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2401 t
->symtab_shndx_section
= section_number
++;
2402 t
->symtab_shndx_hdr
.sh_name
2403 = (unsigned int) _bfd_elf_strtab_add (elf_shstrtab (abfd
),
2404 ".symtab_shndx", false);
2405 if (t
->symtab_shndx_hdr
.sh_name
== (unsigned int) -1)
2408 if (section_number
== SHN_LORESERVE
)
2409 section_number
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2410 t
->strtab_section
= section_number
++;
2411 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), t
->strtab_hdr
.sh_name
);
2414 _bfd_elf_strtab_finalize (elf_shstrtab (abfd
));
2415 t
->shstrtab_hdr
.sh_size
= _bfd_elf_strtab_size (elf_shstrtab (abfd
));
2417 elf_numsections (abfd
) = section_number
;
2418 elf_elfheader (abfd
)->e_shnum
= section_number
;
2419 if (section_number
> SHN_LORESERVE
)
2420 elf_elfheader (abfd
)->e_shnum
-= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
2422 /* Set up the list of section header pointers, in agreement with the
2424 amt
= section_number
* sizeof (Elf_Internal_Shdr
*);
2425 i_shdrp
= (Elf_Internal_Shdr
**) bfd_alloc (abfd
, amt
);
2426 if (i_shdrp
== NULL
)
2429 amt
= sizeof (Elf_Internal_Shdr
);
2430 i_shdrp
[0] = (Elf_Internal_Shdr
*) bfd_alloc (abfd
, amt
);
2431 if (i_shdrp
[0] == NULL
)
2433 bfd_release (abfd
, i_shdrp
);
2436 memset (i_shdrp
[0], 0, sizeof (Elf_Internal_Shdr
));
2438 elf_elfsections (abfd
) = i_shdrp
;
2440 i_shdrp
[t
->shstrtab_section
] = &t
->shstrtab_hdr
;
2441 if (bfd_get_symcount (abfd
) > 0)
2443 i_shdrp
[t
->symtab_section
] = &t
->symtab_hdr
;
2444 if (elf_numsections (abfd
) > SHN_LORESERVE
)
2446 i_shdrp
[t
->symtab_shndx_section
] = &t
->symtab_shndx_hdr
;
2447 t
->symtab_shndx_hdr
.sh_link
= t
->symtab_section
;
2449 i_shdrp
[t
->strtab_section
] = &t
->strtab_hdr
;
2450 t
->symtab_hdr
.sh_link
= t
->strtab_section
;
2452 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
2454 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
2458 i_shdrp
[d
->this_idx
] = &d
->this_hdr
;
2459 if (d
->rel_idx
!= 0)
2460 i_shdrp
[d
->rel_idx
] = &d
->rel_hdr
;
2461 if (d
->rel_idx2
!= 0)
2462 i_shdrp
[d
->rel_idx2
] = d
->rel_hdr2
;
2464 /* Fill in the sh_link and sh_info fields while we're at it. */
2466 /* sh_link of a reloc section is the section index of the symbol
2467 table. sh_info is the section index of the section to which
2468 the relocation entries apply. */
2469 if (d
->rel_idx
!= 0)
2471 d
->rel_hdr
.sh_link
= t
->symtab_section
;
2472 d
->rel_hdr
.sh_info
= d
->this_idx
;
2474 if (d
->rel_idx2
!= 0)
2476 d
->rel_hdr2
->sh_link
= t
->symtab_section
;
2477 d
->rel_hdr2
->sh_info
= d
->this_idx
;
2480 switch (d
->this_hdr
.sh_type
)
2484 /* A reloc section which we are treating as a normal BFD
2485 section. sh_link is the section index of the symbol
2486 table. sh_info is the section index of the section to
2487 which the relocation entries apply. We assume that an
2488 allocated reloc section uses the dynamic symbol table.
2489 FIXME: How can we be sure? */
2490 s
= bfd_get_section_by_name (abfd
, ".dynsym");
2492 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
2494 /* We look up the section the relocs apply to by name. */
2496 if (d
->this_hdr
.sh_type
== SHT_REL
)
2500 s
= bfd_get_section_by_name (abfd
, name
);
2502 d
->this_hdr
.sh_info
= elf_section_data (s
)->this_idx
;
2506 /* We assume that a section named .stab*str is a stabs
2507 string section. We look for a section with the same name
2508 but without the trailing ``str'', and set its sh_link
2509 field to point to this section. */
2510 if (strncmp (sec
->name
, ".stab", sizeof ".stab" - 1) == 0
2511 && strcmp (sec
->name
+ strlen (sec
->name
) - 3, "str") == 0)
2516 len
= strlen (sec
->name
);
2517 alc
= (char *) bfd_malloc ((bfd_size_type
) len
- 2);
2520 strncpy (alc
, sec
->name
, len
- 3);
2521 alc
[len
- 3] = '\0';
2522 s
= bfd_get_section_by_name (abfd
, alc
);
2526 elf_section_data (s
)->this_hdr
.sh_link
= d
->this_idx
;
2528 /* This is a .stab section. */
2529 elf_section_data (s
)->this_hdr
.sh_entsize
=
2530 4 + 2 * bfd_get_arch_size (abfd
) / 8;
2537 case SHT_GNU_verneed
:
2538 case SHT_GNU_verdef
:
2539 /* sh_link is the section header index of the string table
2540 used for the dynamic entries, or the symbol table, or the
2542 s
= bfd_get_section_by_name (abfd
, ".dynstr");
2544 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
2548 case SHT_GNU_versym
:
2549 /* sh_link is the section header index of the symbol table
2550 this hash table or version table is for. */
2551 s
= bfd_get_section_by_name (abfd
, ".dynsym");
2553 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
2557 d
->this_hdr
.sh_link
= t
->symtab_section
;
2561 for (secn
= 1; secn
< section_number
; ++secn
)
2562 if (i_shdrp
[secn
] == NULL
)
2563 i_shdrp
[secn
] = i_shdrp
[0];
2565 i_shdrp
[secn
]->sh_name
= _bfd_elf_strtab_offset (elf_shstrtab (abfd
),
2566 i_shdrp
[secn
]->sh_name
);
2570 /* Map symbol from it's internal number to the external number, moving
2571 all local symbols to be at the head of the list. */
2574 sym_is_global (abfd
, sym
)
2578 /* If the backend has a special mapping, use it. */
2579 if (get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
2580 return ((*get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
2583 return ((sym
->flags
& (BSF_GLOBAL
| BSF_WEAK
)) != 0
2584 || bfd_is_und_section (bfd_get_section (sym
))
2585 || bfd_is_com_section (bfd_get_section (sym
)));
2589 elf_map_symbols (abfd
)
2592 unsigned int symcount
= bfd_get_symcount (abfd
);
2593 asymbol
**syms
= bfd_get_outsymbols (abfd
);
2594 asymbol
**sect_syms
;
2595 unsigned int num_locals
= 0;
2596 unsigned int num_globals
= 0;
2597 unsigned int num_locals2
= 0;
2598 unsigned int num_globals2
= 0;
2606 fprintf (stderr
, "elf_map_symbols\n");
2610 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2612 if (max_index
< asect
->index
)
2613 max_index
= asect
->index
;
2617 amt
= max_index
* sizeof (asymbol
*);
2618 sect_syms
= (asymbol
**) bfd_zalloc (abfd
, amt
);
2619 if (sect_syms
== NULL
)
2621 elf_section_syms (abfd
) = sect_syms
;
2622 elf_num_section_syms (abfd
) = max_index
;
2624 /* Init sect_syms entries for any section symbols we have already
2625 decided to output. */
2626 for (idx
= 0; idx
< symcount
; idx
++)
2628 asymbol
*sym
= syms
[idx
];
2630 if ((sym
->flags
& BSF_SECTION_SYM
) != 0
2637 if (sec
->owner
!= NULL
)
2639 if (sec
->owner
!= abfd
)
2641 if (sec
->output_offset
!= 0)
2644 sec
= sec
->output_section
;
2646 /* Empty sections in the input files may have had a
2647 section symbol created for them. (See the comment
2648 near the end of _bfd_generic_link_output_symbols in
2649 linker.c). If the linker script discards such
2650 sections then we will reach this point. Since we know
2651 that we cannot avoid this case, we detect it and skip
2652 the abort and the assignment to the sect_syms array.
2653 To reproduce this particular case try running the
2654 linker testsuite test ld-scripts/weak.exp for an ELF
2655 port that uses the generic linker. */
2656 if (sec
->owner
== NULL
)
2659 BFD_ASSERT (sec
->owner
== abfd
);
2661 sect_syms
[sec
->index
] = syms
[idx
];
2666 /* Classify all of the symbols. */
2667 for (idx
= 0; idx
< symcount
; idx
++)
2669 if (!sym_is_global (abfd
, syms
[idx
]))
2675 /* We will be adding a section symbol for each BFD section. Most normal
2676 sections will already have a section symbol in outsymbols, but
2677 eg. SHT_GROUP sections will not, and we need the section symbol mapped
2678 at least in that case. */
2679 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2681 if (sect_syms
[asect
->index
] == NULL
)
2683 if (!sym_is_global (abfd
, asect
->symbol
))
2690 /* Now sort the symbols so the local symbols are first. */
2691 amt
= (num_locals
+ num_globals
) * sizeof (asymbol
*);
2692 new_syms
= (asymbol
**) bfd_alloc (abfd
, amt
);
2694 if (new_syms
== NULL
)
2697 for (idx
= 0; idx
< symcount
; idx
++)
2699 asymbol
*sym
= syms
[idx
];
2702 if (!sym_is_global (abfd
, sym
))
2705 i
= num_locals
+ num_globals2
++;
2707 sym
->udata
.i
= i
+ 1;
2709 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2711 if (sect_syms
[asect
->index
] == NULL
)
2713 asymbol
*sym
= asect
->symbol
;
2716 sect_syms
[asect
->index
] = sym
;
2717 if (!sym_is_global (abfd
, sym
))
2720 i
= num_locals
+ num_globals2
++;
2722 sym
->udata
.i
= i
+ 1;
2726 bfd_set_symtab (abfd
, new_syms
, num_locals
+ num_globals
);
2728 elf_num_locals (abfd
) = num_locals
;
2729 elf_num_globals (abfd
) = num_globals
;
2733 /* Align to the maximum file alignment that could be required for any
2734 ELF data structure. */
2736 static INLINE file_ptr align_file_position
PARAMS ((file_ptr
, int));
2737 static INLINE file_ptr
2738 align_file_position (off
, align
)
2742 return (off
+ align
- 1) & ~(align
- 1);
2745 /* Assign a file position to a section, optionally aligning to the
2746 required section alignment. */
2749 _bfd_elf_assign_file_position_for_section (i_shdrp
, offset
, align
)
2750 Elf_Internal_Shdr
*i_shdrp
;
2758 al
= i_shdrp
->sh_addralign
;
2760 offset
= BFD_ALIGN (offset
, al
);
2762 i_shdrp
->sh_offset
= offset
;
2763 if (i_shdrp
->bfd_section
!= NULL
)
2764 i_shdrp
->bfd_section
->filepos
= offset
;
2765 if (i_shdrp
->sh_type
!= SHT_NOBITS
)
2766 offset
+= i_shdrp
->sh_size
;
2770 /* Compute the file positions we are going to put the sections at, and
2771 otherwise prepare to begin writing out the ELF file. If LINK_INFO
2772 is not NULL, this is being called by the ELF backend linker. */
2775 _bfd_elf_compute_section_file_positions (abfd
, link_info
)
2777 struct bfd_link_info
*link_info
;
2779 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2781 struct bfd_strtab_hash
*strtab
;
2782 Elf_Internal_Shdr
*shstrtab_hdr
;
2784 if (abfd
->output_has_begun
)
2787 /* Do any elf backend specific processing first. */
2788 if (bed
->elf_backend_begin_write_processing
)
2789 (*bed
->elf_backend_begin_write_processing
) (abfd
, link_info
);
2791 if (! prep_headers (abfd
))
2794 /* Post process the headers if necessary. */
2795 if (bed
->elf_backend_post_process_headers
)
2796 (*bed
->elf_backend_post_process_headers
) (abfd
, link_info
);
2799 bfd_map_over_sections (abfd
, elf_fake_sections
, &failed
);
2803 if (!assign_section_numbers (abfd
))
2806 /* The backend linker builds symbol table information itself. */
2807 if (link_info
== NULL
&& bfd_get_symcount (abfd
) > 0)
2809 /* Non-zero if doing a relocatable link. */
2810 int relocatable_p
= ! (abfd
->flags
& (EXEC_P
| DYNAMIC
));
2812 if (! swap_out_syms (abfd
, &strtab
, relocatable_p
))
2816 if (link_info
== NULL
|| link_info
->relocateable
)
2818 bfd_map_over_sections (abfd
, set_group_contents
, &failed
);
2823 shstrtab_hdr
= &elf_tdata (abfd
)->shstrtab_hdr
;
2824 /* sh_name was set in prep_headers. */
2825 shstrtab_hdr
->sh_type
= SHT_STRTAB
;
2826 shstrtab_hdr
->sh_flags
= 0;
2827 shstrtab_hdr
->sh_addr
= 0;
2828 shstrtab_hdr
->sh_size
= _bfd_elf_strtab_size (elf_shstrtab (abfd
));
2829 shstrtab_hdr
->sh_entsize
= 0;
2830 shstrtab_hdr
->sh_link
= 0;
2831 shstrtab_hdr
->sh_info
= 0;
2832 /* sh_offset is set in assign_file_positions_except_relocs. */
2833 shstrtab_hdr
->sh_addralign
= 1;
2835 if (!assign_file_positions_except_relocs (abfd
))
2838 if (link_info
== NULL
&& bfd_get_symcount (abfd
) > 0)
2841 Elf_Internal_Shdr
*hdr
;
2843 off
= elf_tdata (abfd
)->next_file_pos
;
2845 hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2846 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
2848 hdr
= &elf_tdata (abfd
)->symtab_shndx_hdr
;
2849 if (hdr
->sh_size
!= 0)
2850 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
2852 hdr
= &elf_tdata (abfd
)->strtab_hdr
;
2853 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
2855 elf_tdata (abfd
)->next_file_pos
= off
;
2857 /* Now that we know where the .strtab section goes, write it
2859 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
2860 || ! _bfd_stringtab_emit (abfd
, strtab
))
2862 _bfd_stringtab_free (strtab
);
2865 abfd
->output_has_begun
= true;
2870 /* Create a mapping from a set of sections to a program segment. */
2872 static INLINE
struct elf_segment_map
*
2873 make_mapping (abfd
, sections
, from
, to
, phdr
)
2875 asection
**sections
;
2880 struct elf_segment_map
*m
;
2885 amt
= sizeof (struct elf_segment_map
);
2886 amt
+= (to
- from
- 1) * sizeof (asection
*);
2887 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2891 m
->p_type
= PT_LOAD
;
2892 for (i
= from
, hdrpp
= sections
+ from
; i
< to
; i
++, hdrpp
++)
2893 m
->sections
[i
- from
] = *hdrpp
;
2894 m
->count
= to
- from
;
2896 if (from
== 0 && phdr
)
2898 /* Include the headers in the first PT_LOAD segment. */
2899 m
->includes_filehdr
= 1;
2900 m
->includes_phdrs
= 1;
2906 /* Set up a mapping from BFD sections to program segments. */
2909 map_sections_to_segments (abfd
)
2912 asection
**sections
= NULL
;
2916 struct elf_segment_map
*mfirst
;
2917 struct elf_segment_map
**pm
;
2918 struct elf_segment_map
*m
;
2920 unsigned int phdr_index
;
2921 bfd_vma maxpagesize
;
2923 boolean phdr_in_segment
= true;
2925 asection
*dynsec
, *eh_frame_hdr
;
2928 if (elf_tdata (abfd
)->segment_map
!= NULL
)
2931 if (bfd_count_sections (abfd
) == 0)
2934 /* Select the allocated sections, and sort them. */
2936 amt
= bfd_count_sections (abfd
) * sizeof (asection
*);
2937 sections
= (asection
**) bfd_malloc (amt
);
2938 if (sections
== NULL
)
2942 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
2944 if ((s
->flags
& SEC_ALLOC
) != 0)
2950 BFD_ASSERT (i
<= bfd_count_sections (abfd
));
2953 qsort (sections
, (size_t) count
, sizeof (asection
*), elf_sort_sections
);
2955 /* Build the mapping. */
2960 /* If we have a .interp section, then create a PT_PHDR segment for
2961 the program headers and a PT_INTERP segment for the .interp
2963 s
= bfd_get_section_by_name (abfd
, ".interp");
2964 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
2966 amt
= sizeof (struct elf_segment_map
);
2967 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2971 m
->p_type
= PT_PHDR
;
2972 /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */
2973 m
->p_flags
= PF_R
| PF_X
;
2974 m
->p_flags_valid
= 1;
2975 m
->includes_phdrs
= 1;
2980 amt
= sizeof (struct elf_segment_map
);
2981 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2985 m
->p_type
= PT_INTERP
;
2993 /* Look through the sections. We put sections in the same program
2994 segment when the start of the second section can be placed within
2995 a few bytes of the end of the first section. */
2998 maxpagesize
= get_elf_backend_data (abfd
)->maxpagesize
;
3000 dynsec
= bfd_get_section_by_name (abfd
, ".dynamic");
3002 && (dynsec
->flags
& SEC_LOAD
) == 0)
3005 /* Deal with -Ttext or something similar such that the first section
3006 is not adjacent to the program headers. This is an
3007 approximation, since at this point we don't know exactly how many
3008 program headers we will need. */
3011 bfd_size_type phdr_size
;
3013 phdr_size
= elf_tdata (abfd
)->program_header_size
;
3015 phdr_size
= get_elf_backend_data (abfd
)->s
->sizeof_phdr
;
3016 if ((abfd
->flags
& D_PAGED
) == 0
3017 || sections
[0]->lma
< phdr_size
3018 || sections
[0]->lma
% maxpagesize
< phdr_size
% maxpagesize
)
3019 phdr_in_segment
= false;
3022 for (i
= 0, hdrpp
= sections
; i
< count
; i
++, hdrpp
++)
3025 boolean new_segment
;
3029 /* See if this section and the last one will fit in the same
3032 if (last_hdr
== NULL
)
3034 /* If we don't have a segment yet, then we don't need a new
3035 one (we build the last one after this loop). */
3036 new_segment
= false;
3038 else if (last_hdr
->lma
- last_hdr
->vma
!= hdr
->lma
- hdr
->vma
)
3040 /* If this section has a different relation between the
3041 virtual address and the load address, then we need a new
3045 else if (BFD_ALIGN (last_hdr
->lma
+ last_hdr
->_raw_size
, maxpagesize
)
3046 < BFD_ALIGN (hdr
->lma
, maxpagesize
))
3048 /* If putting this section in this segment would force us to
3049 skip a page in the segment, then we need a new segment. */
3052 else if ((last_hdr
->flags
& SEC_LOAD
) == 0
3053 && (hdr
->flags
& SEC_LOAD
) != 0)
3055 /* We don't want to put a loadable section after a
3056 nonloadable section in the same segment. */
3059 else if ((abfd
->flags
& D_PAGED
) == 0)
3061 /* If the file is not demand paged, which means that we
3062 don't require the sections to be correctly aligned in the
3063 file, then there is no other reason for a new segment. */
3064 new_segment
= false;
3067 && (hdr
->flags
& SEC_READONLY
) == 0
3068 && (BFD_ALIGN (last_hdr
->lma
+ last_hdr
->_raw_size
, maxpagesize
)
3071 /* We don't want to put a writable section in a read only
3072 segment, unless they are on the same page in memory
3073 anyhow. We already know that the last section does not
3074 bring us past the current section on the page, so the
3075 only case in which the new section is not on the same
3076 page as the previous section is when the previous section
3077 ends precisely on a page boundary. */
3082 /* Otherwise, we can use the same segment. */
3083 new_segment
= false;
3088 if ((hdr
->flags
& SEC_READONLY
) == 0)
3094 /* We need a new program segment. We must create a new program
3095 header holding all the sections from phdr_index until hdr. */
3097 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_segment
);
3104 if ((hdr
->flags
& SEC_READONLY
) == 0)
3111 phdr_in_segment
= false;
3114 /* Create a final PT_LOAD program segment. */
3115 if (last_hdr
!= NULL
)
3117 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_segment
);
3125 /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */
3128 amt
= sizeof (struct elf_segment_map
);
3129 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
3133 m
->p_type
= PT_DYNAMIC
;
3135 m
->sections
[0] = dynsec
;
3141 /* For each loadable .note section, add a PT_NOTE segment. We don't
3142 use bfd_get_section_by_name, because if we link together
3143 nonloadable .note sections and loadable .note sections, we will
3144 generate two .note sections in the output file. FIXME: Using
3145 names for section types is bogus anyhow. */
3146 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
3148 if ((s
->flags
& SEC_LOAD
) != 0
3149 && strncmp (s
->name
, ".note", 5) == 0)
3151 amt
= sizeof (struct elf_segment_map
);
3152 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
3156 m
->p_type
= PT_NOTE
;
3165 /* If there is a .eh_frame_hdr section, throw in a PT_GNU_EH_FRAME
3167 eh_frame_hdr
= NULL
;
3168 if (elf_tdata (abfd
)->eh_frame_hdr
)
3169 eh_frame_hdr
= bfd_get_section_by_name (abfd
, ".eh_frame_hdr");
3170 if (eh_frame_hdr
!= NULL
&& (eh_frame_hdr
->flags
& SEC_LOAD
))
3172 amt
= sizeof (struct elf_segment_map
);
3173 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
3177 m
->p_type
= PT_GNU_EH_FRAME
;
3179 m
->sections
[0] = eh_frame_hdr
;
3188 elf_tdata (abfd
)->segment_map
= mfirst
;
3192 if (sections
!= NULL
)
3197 /* Sort sections by address. */
3200 elf_sort_sections (arg1
, arg2
)
3204 const asection
*sec1
= *(const asection
**) arg1
;
3205 const asection
*sec2
= *(const asection
**) arg2
;
3207 /* Sort by LMA first, since this is the address used to
3208 place the section into a segment. */
3209 if (sec1
->lma
< sec2
->lma
)
3211 else if (sec1
->lma
> sec2
->lma
)
3214 /* Then sort by VMA. Normally the LMA and the VMA will be
3215 the same, and this will do nothing. */
3216 if (sec1
->vma
< sec2
->vma
)
3218 else if (sec1
->vma
> sec2
->vma
)
3221 /* Put !SEC_LOAD sections after SEC_LOAD ones. */
3223 #define TOEND(x) (((x)->flags & SEC_LOAD) == 0)
3229 /* If the indicies are the same, do not return 0
3230 here, but continue to try the next comparison. */
3231 if (sec1
->target_index
- sec2
->target_index
!= 0)
3232 return sec1
->target_index
- sec2
->target_index
;
3237 else if (TOEND (sec2
))
3242 /* Sort by size, to put zero sized sections
3243 before others at the same address. */
3245 if (sec1
->_raw_size
< sec2
->_raw_size
)
3247 if (sec1
->_raw_size
> sec2
->_raw_size
)
3250 return sec1
->target_index
- sec2
->target_index
;
3253 /* Assign file positions to the sections based on the mapping from
3254 sections to segments. This function also sets up some fields in
3255 the file header, and writes out the program headers. */
3258 assign_file_positions_for_segments (abfd
)
3261 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3263 struct elf_segment_map
*m
;
3265 Elf_Internal_Phdr
*phdrs
;
3267 bfd_vma filehdr_vaddr
, filehdr_paddr
;
3268 bfd_vma phdrs_vaddr
, phdrs_paddr
;
3269 Elf_Internal_Phdr
*p
;
3272 if (elf_tdata (abfd
)->segment_map
== NULL
)
3274 if (! map_sections_to_segments (abfd
))
3278 if (bed
->elf_backend_modify_segment_map
)
3280 if (! (*bed
->elf_backend_modify_segment_map
) (abfd
))
3285 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
3288 elf_elfheader (abfd
)->e_phoff
= bed
->s
->sizeof_ehdr
;
3289 elf_elfheader (abfd
)->e_phentsize
= bed
->s
->sizeof_phdr
;
3290 elf_elfheader (abfd
)->e_phnum
= count
;
3295 /* If we already counted the number of program segments, make sure
3296 that we allocated enough space. This happens when SIZEOF_HEADERS
3297 is used in a linker script. */
3298 alloc
= elf_tdata (abfd
)->program_header_size
/ bed
->s
->sizeof_phdr
;
3299 if (alloc
!= 0 && count
> alloc
)
3301 ((*_bfd_error_handler
)
3302 (_("%s: Not enough room for program headers (allocated %u, need %u)"),
3303 bfd_get_filename (abfd
), alloc
, count
));
3304 bfd_set_error (bfd_error_bad_value
);
3311 amt
= alloc
* sizeof (Elf_Internal_Phdr
);
3312 phdrs
= (Elf_Internal_Phdr
*) bfd_alloc (abfd
, amt
);
3316 off
= bed
->s
->sizeof_ehdr
;
3317 off
+= alloc
* bed
->s
->sizeof_phdr
;
3324 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
3331 /* If elf_segment_map is not from map_sections_to_segments, the
3332 sections may not be correctly ordered. NOTE: sorting should
3333 not be done to the PT_NOTE section of a corefile, which may
3334 contain several pseudo-sections artificially created by bfd.
3335 Sorting these pseudo-sections breaks things badly. */
3337 && !(elf_elfheader (abfd
)->e_type
== ET_CORE
3338 && m
->p_type
== PT_NOTE
))
3339 qsort (m
->sections
, (size_t) m
->count
, sizeof (asection
*),
3342 p
->p_type
= m
->p_type
;
3343 p
->p_flags
= m
->p_flags
;
3345 if (p
->p_type
== PT_LOAD
3347 && (m
->sections
[0]->flags
& SEC_ALLOC
) != 0)
3349 if ((abfd
->flags
& D_PAGED
) != 0)
3350 off
+= (m
->sections
[0]->vma
- off
) % bed
->maxpagesize
;
3353 bfd_size_type align
;
3356 for (i
= 0, secpp
= m
->sections
; i
< m
->count
; i
++, secpp
++)
3358 bfd_size_type secalign
;
3360 secalign
= bfd_get_section_alignment (abfd
, *secpp
);
3361 if (secalign
> align
)
3365 off
+= (m
->sections
[0]->vma
- off
) % (1 << align
);
3372 p
->p_vaddr
= m
->sections
[0]->vma
;
3374 if (m
->p_paddr_valid
)
3375 p
->p_paddr
= m
->p_paddr
;
3376 else if (m
->count
== 0)
3379 p
->p_paddr
= m
->sections
[0]->lma
;
3381 if (p
->p_type
== PT_LOAD
3382 && (abfd
->flags
& D_PAGED
) != 0)
3383 p
->p_align
= bed
->maxpagesize
;
3384 else if (m
->count
== 0)
3385 p
->p_align
= bed
->s
->file_align
;
3393 if (m
->includes_filehdr
)
3395 if (! m
->p_flags_valid
)
3398 p
->p_filesz
= bed
->s
->sizeof_ehdr
;
3399 p
->p_memsz
= bed
->s
->sizeof_ehdr
;
3402 BFD_ASSERT (p
->p_type
== PT_LOAD
);
3404 if (p
->p_vaddr
< (bfd_vma
) off
)
3406 _bfd_error_handler (_("%s: Not enough room for program headers, try linking with -N"),
3407 bfd_get_filename (abfd
));
3408 bfd_set_error (bfd_error_bad_value
);
3413 if (! m
->p_paddr_valid
)
3416 if (p
->p_type
== PT_LOAD
)
3418 filehdr_vaddr
= p
->p_vaddr
;
3419 filehdr_paddr
= p
->p_paddr
;
3423 if (m
->includes_phdrs
)
3425 if (! m
->p_flags_valid
)
3428 if (m
->includes_filehdr
)
3430 if (p
->p_type
== PT_LOAD
)
3432 phdrs_vaddr
= p
->p_vaddr
+ bed
->s
->sizeof_ehdr
;
3433 phdrs_paddr
= p
->p_paddr
+ bed
->s
->sizeof_ehdr
;
3438 p
->p_offset
= bed
->s
->sizeof_ehdr
;
3442 BFD_ASSERT (p
->p_type
== PT_LOAD
);
3443 p
->p_vaddr
-= off
- p
->p_offset
;
3444 if (! m
->p_paddr_valid
)
3445 p
->p_paddr
-= off
- p
->p_offset
;
3448 if (p
->p_type
== PT_LOAD
)
3450 phdrs_vaddr
= p
->p_vaddr
;
3451 phdrs_paddr
= p
->p_paddr
;
3454 phdrs_vaddr
= bed
->maxpagesize
+ bed
->s
->sizeof_ehdr
;
3457 p
->p_filesz
+= alloc
* bed
->s
->sizeof_phdr
;
3458 p
->p_memsz
+= alloc
* bed
->s
->sizeof_phdr
;
3461 if (p
->p_type
== PT_LOAD
3462 || (p
->p_type
== PT_NOTE
&& bfd_get_format (abfd
) == bfd_core
))
3464 if (! m
->includes_filehdr
&& ! m
->includes_phdrs
)
3470 adjust
= off
- (p
->p_offset
+ p
->p_filesz
);
3471 p
->p_filesz
+= adjust
;
3472 p
->p_memsz
+= adjust
;
3478 for (i
= 0, secpp
= m
->sections
; i
< m
->count
; i
++, secpp
++)
3482 bfd_size_type align
;
3486 align
= 1 << bfd_get_section_alignment (abfd
, sec
);
3488 /* The section may have artificial alignment forced by a
3489 link script. Notice this case by the gap between the
3490 cumulative phdr lma and the section's lma. */
3491 if (p
->p_paddr
+ p
->p_memsz
< sec
->lma
)
3493 bfd_vma adjust
= sec
->lma
- (p
->p_paddr
+ p
->p_memsz
);
3495 p
->p_memsz
+= adjust
;
3498 if ((flags
& SEC_LOAD
) != 0)
3499 p
->p_filesz
+= adjust
;
3502 if (p
->p_type
== PT_LOAD
)
3504 bfd_signed_vma adjust
;
3506 if ((flags
& SEC_LOAD
) != 0)
3508 adjust
= sec
->lma
- (p
->p_paddr
+ p
->p_memsz
);
3512 else if ((flags
& SEC_ALLOC
) != 0)
3514 /* The section VMA must equal the file position
3515 modulo the page size. FIXME: I'm not sure if
3516 this adjustment is really necessary. We used to
3517 not have the SEC_LOAD case just above, and then
3518 this was necessary, but now I'm not sure. */
3519 if ((abfd
->flags
& D_PAGED
) != 0)
3520 adjust
= (sec
->vma
- voff
) % bed
->maxpagesize
;
3522 adjust
= (sec
->vma
- voff
) % align
;
3531 (* _bfd_error_handler
) (_("\
3532 Error: First section in segment (%s) starts at 0x%x whereas the segment starts at 0x%x"),
3533 bfd_section_name (abfd
, sec
),
3538 p
->p_memsz
+= adjust
;
3541 if ((flags
& SEC_LOAD
) != 0)
3542 p
->p_filesz
+= adjust
;
3547 /* We check SEC_HAS_CONTENTS here because if NOLOAD is
3548 used in a linker script we may have a section with
3549 SEC_LOAD clear but which is supposed to have
3551 if ((flags
& SEC_LOAD
) != 0
3552 || (flags
& SEC_HAS_CONTENTS
) != 0)
3553 off
+= sec
->_raw_size
;
3555 if ((flags
& SEC_ALLOC
) != 0)
3556 voff
+= sec
->_raw_size
;
3559 if (p
->p_type
== PT_NOTE
&& bfd_get_format (abfd
) == bfd_core
)
3561 /* The actual "note" segment has i == 0.
3562 This is the one that actually contains everything. */
3566 p
->p_filesz
= sec
->_raw_size
;
3567 off
+= sec
->_raw_size
;
3572 /* Fake sections -- don't need to be written. */
3575 flags
= sec
->flags
= 0;
3582 p
->p_memsz
+= sec
->_raw_size
;
3584 if ((flags
& SEC_LOAD
) != 0)
3585 p
->p_filesz
+= sec
->_raw_size
;
3587 if (align
> p
->p_align
3588 && (p
->p_type
!= PT_LOAD
|| (abfd
->flags
& D_PAGED
) == 0))
3592 if (! m
->p_flags_valid
)
3595 if ((flags
& SEC_CODE
) != 0)
3597 if ((flags
& SEC_READONLY
) == 0)
3603 /* Now that we have set the section file positions, we can set up
3604 the file positions for the non PT_LOAD segments. */
3605 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
3609 if (p
->p_type
!= PT_LOAD
&& m
->count
> 0)
3611 BFD_ASSERT (! m
->includes_filehdr
&& ! m
->includes_phdrs
);
3612 p
->p_offset
= m
->sections
[0]->filepos
;
3616 if (m
->includes_filehdr
)
3618 p
->p_vaddr
= filehdr_vaddr
;
3619 if (! m
->p_paddr_valid
)
3620 p
->p_paddr
= filehdr_paddr
;
3622 else if (m
->includes_phdrs
)
3624 p
->p_vaddr
= phdrs_vaddr
;
3625 if (! m
->p_paddr_valid
)
3626 p
->p_paddr
= phdrs_paddr
;
3631 /* Clear out any program headers we allocated but did not use. */
3632 for (; count
< alloc
; count
++, p
++)
3634 memset (p
, 0, sizeof *p
);
3635 p
->p_type
= PT_NULL
;
3638 elf_tdata (abfd
)->phdr
= phdrs
;
3640 elf_tdata (abfd
)->next_file_pos
= off
;
3642 /* Write out the program headers. */
3643 if (bfd_seek (abfd
, (bfd_signed_vma
) bed
->s
->sizeof_ehdr
, SEEK_SET
) != 0
3644 || bed
->s
->write_out_phdrs (abfd
, phdrs
, alloc
) != 0)
3650 /* Get the size of the program header.
3652 If this is called by the linker before any of the section VMA's are set, it
3653 can't calculate the correct value for a strange memory layout. This only
3654 happens when SIZEOF_HEADERS is used in a linker script. In this case,
3655 SORTED_HDRS is NULL and we assume the normal scenario of one text and one
3656 data segment (exclusive of .interp and .dynamic).
3658 ??? User written scripts must either not use SIZEOF_HEADERS, or assume there
3659 will be two segments. */
3661 static bfd_size_type
3662 get_program_header_size (abfd
)
3667 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3669 /* We can't return a different result each time we're called. */
3670 if (elf_tdata (abfd
)->program_header_size
!= 0)
3671 return elf_tdata (abfd
)->program_header_size
;
3673 if (elf_tdata (abfd
)->segment_map
!= NULL
)
3675 struct elf_segment_map
*m
;
3678 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
3680 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
3681 return elf_tdata (abfd
)->program_header_size
;
3684 /* Assume we will need exactly two PT_LOAD segments: one for text
3685 and one for data. */
3688 s
= bfd_get_section_by_name (abfd
, ".interp");
3689 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
3691 /* If we have a loadable interpreter section, we need a
3692 PT_INTERP segment. In this case, assume we also need a
3693 PT_PHDR segment, although that may not be true for all
3698 if (bfd_get_section_by_name (abfd
, ".dynamic") != NULL
)
3700 /* We need a PT_DYNAMIC segment. */
3704 if (elf_tdata (abfd
)->eh_frame_hdr
3705 && bfd_get_section_by_name (abfd
, ".eh_frame_hdr") != NULL
)
3707 /* We need a PT_GNU_EH_FRAME segment. */
3711 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
3713 if ((s
->flags
& SEC_LOAD
) != 0
3714 && strncmp (s
->name
, ".note", 5) == 0)
3716 /* We need a PT_NOTE segment. */
3721 /* Let the backend count up any program headers it might need. */
3722 if (bed
->elf_backend_additional_program_headers
)
3726 a
= (*bed
->elf_backend_additional_program_headers
) (abfd
);
3732 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
3733 return elf_tdata (abfd
)->program_header_size
;
3736 /* Work out the file positions of all the sections. This is called by
3737 _bfd_elf_compute_section_file_positions. All the section sizes and
3738 VMAs must be known before this is called.
3740 We do not consider reloc sections at this point, unless they form
3741 part of the loadable image. Reloc sections are assigned file
3742 positions in assign_file_positions_for_relocs, which is called by
3743 write_object_contents and final_link.
3745 We also don't set the positions of the .symtab and .strtab here. */
3748 assign_file_positions_except_relocs (abfd
)
3751 struct elf_obj_tdata
* const tdata
= elf_tdata (abfd
);
3752 Elf_Internal_Ehdr
* const i_ehdrp
= elf_elfheader (abfd
);
3753 Elf_Internal_Shdr
** const i_shdrpp
= elf_elfsections (abfd
);
3754 unsigned int num_sec
= elf_numsections (abfd
);
3756 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3758 if ((abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0
3759 && bfd_get_format (abfd
) != bfd_core
)
3761 Elf_Internal_Shdr
**hdrpp
;
3764 /* Start after the ELF header. */
3765 off
= i_ehdrp
->e_ehsize
;
3767 /* We are not creating an executable, which means that we are
3768 not creating a program header, and that the actual order of
3769 the sections in the file is unimportant. */
3770 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< num_sec
; i
++, hdrpp
++)
3772 Elf_Internal_Shdr
*hdr
;
3775 if (hdr
->sh_type
== SHT_REL
3776 || hdr
->sh_type
== SHT_RELA
3777 || i
== tdata
->symtab_section
3778 || i
== tdata
->symtab_shndx_section
3779 || i
== tdata
->strtab_section
)
3781 hdr
->sh_offset
= -1;
3784 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
3786 if (i
== SHN_LORESERVE
- 1)
3788 i
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
3789 hdrpp
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
3796 Elf_Internal_Shdr
**hdrpp
;
3798 /* Assign file positions for the loaded sections based on the
3799 assignment of sections to segments. */
3800 if (! assign_file_positions_for_segments (abfd
))
3803 /* Assign file positions for the other sections. */
3805 off
= elf_tdata (abfd
)->next_file_pos
;
3806 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< num_sec
; i
++, hdrpp
++)
3808 Elf_Internal_Shdr
*hdr
;
3811 if (hdr
->bfd_section
!= NULL
3812 && hdr
->bfd_section
->filepos
!= 0)
3813 hdr
->sh_offset
= hdr
->bfd_section
->filepos
;
3814 else if ((hdr
->sh_flags
& SHF_ALLOC
) != 0)
3816 ((*_bfd_error_handler
)
3817 (_("%s: warning: allocated section `%s' not in segment"),
3818 bfd_get_filename (abfd
),
3819 (hdr
->bfd_section
== NULL
3821 : hdr
->bfd_section
->name
)));
3822 if ((abfd
->flags
& D_PAGED
) != 0)
3823 off
+= (hdr
->sh_addr
- off
) % bed
->maxpagesize
;
3825 off
+= (hdr
->sh_addr
- off
) % hdr
->sh_addralign
;
3826 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
,
3829 else if (hdr
->sh_type
== SHT_REL
3830 || hdr
->sh_type
== SHT_RELA
3831 || hdr
== i_shdrpp
[tdata
->symtab_section
]
3832 || hdr
== i_shdrpp
[tdata
->symtab_shndx_section
]
3833 || hdr
== i_shdrpp
[tdata
->strtab_section
])
3834 hdr
->sh_offset
= -1;
3836 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
3838 if (i
== SHN_LORESERVE
- 1)
3840 i
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
3841 hdrpp
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
3846 /* Place the section headers. */
3847 off
= align_file_position (off
, bed
->s
->file_align
);
3848 i_ehdrp
->e_shoff
= off
;
3849 off
+= i_ehdrp
->e_shnum
* i_ehdrp
->e_shentsize
;
3851 elf_tdata (abfd
)->next_file_pos
= off
;
3860 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
3861 Elf_Internal_Phdr
*i_phdrp
= 0; /* Program header table, internal form */
3862 Elf_Internal_Shdr
**i_shdrp
; /* Section header table, internal form */
3864 struct elf_strtab_hash
*shstrtab
;
3865 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3867 i_ehdrp
= elf_elfheader (abfd
);
3868 i_shdrp
= elf_elfsections (abfd
);
3870 shstrtab
= _bfd_elf_strtab_init ();
3871 if (shstrtab
== NULL
)
3874 elf_shstrtab (abfd
) = shstrtab
;
3876 i_ehdrp
->e_ident
[EI_MAG0
] = ELFMAG0
;
3877 i_ehdrp
->e_ident
[EI_MAG1
] = ELFMAG1
;
3878 i_ehdrp
->e_ident
[EI_MAG2
] = ELFMAG2
;
3879 i_ehdrp
->e_ident
[EI_MAG3
] = ELFMAG3
;
3881 i_ehdrp
->e_ident
[EI_CLASS
] = bed
->s
->elfclass
;
3882 i_ehdrp
->e_ident
[EI_DATA
] =
3883 bfd_big_endian (abfd
) ? ELFDATA2MSB
: ELFDATA2LSB
;
3884 i_ehdrp
->e_ident
[EI_VERSION
] = bed
->s
->ev_current
;
3886 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_NONE
;
3887 i_ehdrp
->e_ident
[EI_ABIVERSION
] = 0;
3889 for (count
= EI_PAD
; count
< EI_NIDENT
; count
++)
3890 i_ehdrp
->e_ident
[count
] = 0;
3892 if ((abfd
->flags
& DYNAMIC
) != 0)
3893 i_ehdrp
->e_type
= ET_DYN
;
3894 else if ((abfd
->flags
& EXEC_P
) != 0)
3895 i_ehdrp
->e_type
= ET_EXEC
;
3896 else if (bfd_get_format (abfd
) == bfd_core
)
3897 i_ehdrp
->e_type
= ET_CORE
;
3899 i_ehdrp
->e_type
= ET_REL
;
3901 switch (bfd_get_arch (abfd
))
3903 case bfd_arch_unknown
:
3904 i_ehdrp
->e_machine
= EM_NONE
;
3907 /* There used to be a long list of cases here, each one setting
3908 e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE
3909 in the corresponding bfd definition. To avoid duplication,
3910 the switch was removed. Machines that need special handling
3911 can generally do it in elf_backend_final_write_processing(),
3912 unless they need the information earlier than the final write.
3913 Such need can generally be supplied by replacing the tests for
3914 e_machine with the conditions used to determine it. */
3916 if (get_elf_backend_data (abfd
) != NULL
)
3917 i_ehdrp
->e_machine
= get_elf_backend_data (abfd
)->elf_machine_code
;
3919 i_ehdrp
->e_machine
= EM_NONE
;
3922 i_ehdrp
->e_version
= bed
->s
->ev_current
;
3923 i_ehdrp
->e_ehsize
= bed
->s
->sizeof_ehdr
;
3925 /* No program header, for now. */
3926 i_ehdrp
->e_phoff
= 0;
3927 i_ehdrp
->e_phentsize
= 0;
3928 i_ehdrp
->e_phnum
= 0;
3930 /* Each bfd section is section header entry. */
3931 i_ehdrp
->e_entry
= bfd_get_start_address (abfd
);
3932 i_ehdrp
->e_shentsize
= bed
->s
->sizeof_shdr
;
3934 /* If we're building an executable, we'll need a program header table. */
3935 if (abfd
->flags
& EXEC_P
)
3937 /* It all happens later. */
3939 i_ehdrp
->e_phentsize
= sizeof (Elf_External_Phdr
);
3941 /* elf_build_phdrs() returns a (NULL-terminated) array of
3942 Elf_Internal_Phdrs. */
3943 i_phdrp
= elf_build_phdrs (abfd
, i_ehdrp
, i_shdrp
, &i_ehdrp
->e_phnum
);
3944 i_ehdrp
->e_phoff
= outbase
;
3945 outbase
+= i_ehdrp
->e_phentsize
* i_ehdrp
->e_phnum
;
3950 i_ehdrp
->e_phentsize
= 0;
3952 i_ehdrp
->e_phoff
= 0;
3955 elf_tdata (abfd
)->symtab_hdr
.sh_name
=
3956 (unsigned int) _bfd_elf_strtab_add (shstrtab
, ".symtab", false);
3957 elf_tdata (abfd
)->strtab_hdr
.sh_name
=
3958 (unsigned int) _bfd_elf_strtab_add (shstrtab
, ".strtab", false);
3959 elf_tdata (abfd
)->shstrtab_hdr
.sh_name
=
3960 (unsigned int) _bfd_elf_strtab_add (shstrtab
, ".shstrtab", false);
3961 if (elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
3962 || elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
3963 || elf_tdata (abfd
)->shstrtab_hdr
.sh_name
== (unsigned int) -1)
3969 /* Assign file positions for all the reloc sections which are not part
3970 of the loadable file image. */
3973 _bfd_elf_assign_file_positions_for_relocs (abfd
)
3977 unsigned int i
, num_sec
;
3978 Elf_Internal_Shdr
**shdrpp
;
3980 off
= elf_tdata (abfd
)->next_file_pos
;
3982 num_sec
= elf_numsections (abfd
);
3983 for (i
= 1, shdrpp
= elf_elfsections (abfd
) + 1; i
< num_sec
; i
++, shdrpp
++)
3985 Elf_Internal_Shdr
*shdrp
;
3988 if ((shdrp
->sh_type
== SHT_REL
|| shdrp
->sh_type
== SHT_RELA
)
3989 && shdrp
->sh_offset
== -1)
3990 off
= _bfd_elf_assign_file_position_for_section (shdrp
, off
, true);
3993 elf_tdata (abfd
)->next_file_pos
= off
;
3997 _bfd_elf_write_object_contents (abfd
)
4000 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
4001 Elf_Internal_Ehdr
*i_ehdrp
;
4002 Elf_Internal_Shdr
**i_shdrp
;
4004 unsigned int count
, num_sec
;
4006 if (! abfd
->output_has_begun
4007 && ! _bfd_elf_compute_section_file_positions
4008 (abfd
, (struct bfd_link_info
*) NULL
))
4011 i_shdrp
= elf_elfsections (abfd
);
4012 i_ehdrp
= elf_elfheader (abfd
);
4015 bfd_map_over_sections (abfd
, bed
->s
->write_relocs
, &failed
);
4019 _bfd_elf_assign_file_positions_for_relocs (abfd
);
4021 /* After writing the headers, we need to write the sections too... */
4022 num_sec
= elf_numsections (abfd
);
4023 for (count
= 1; count
< num_sec
; count
++)
4025 if (bed
->elf_backend_section_processing
)
4026 (*bed
->elf_backend_section_processing
) (abfd
, i_shdrp
[count
]);
4027 if (i_shdrp
[count
]->contents
)
4029 bfd_size_type amt
= i_shdrp
[count
]->sh_size
;
4031 if (bfd_seek (abfd
, i_shdrp
[count
]->sh_offset
, SEEK_SET
) != 0
4032 || bfd_bwrite (i_shdrp
[count
]->contents
, amt
, abfd
) != amt
)
4035 if (count
== SHN_LORESERVE
- 1)
4036 count
+= SHN_HIRESERVE
+ 1 - SHN_LORESERVE
;
4039 /* Write out the section header names. */
4040 if (bfd_seek (abfd
, elf_tdata (abfd
)->shstrtab_hdr
.sh_offset
, SEEK_SET
) != 0
4041 || ! _bfd_elf_strtab_emit (abfd
, elf_shstrtab (abfd
)))
4044 if (bed
->elf_backend_final_write_processing
)
4045 (*bed
->elf_backend_final_write_processing
) (abfd
,
4046 elf_tdata (abfd
)->linker
);
4048 return bed
->s
->write_shdrs_and_ehdr (abfd
);
4052 _bfd_elf_write_corefile_contents (abfd
)
4055 /* Hopefully this can be done just like an object file. */
4056 return _bfd_elf_write_object_contents (abfd
);
4059 /* Given a section, search the header to find them. */
4062 _bfd_elf_section_from_bfd_section (abfd
, asect
)
4066 struct elf_backend_data
*bed
;
4069 if (elf_section_data (asect
) != NULL
4070 && elf_section_data (asect
)->this_idx
!= 0)
4071 return elf_section_data (asect
)->this_idx
;
4073 if (bfd_is_abs_section (asect
))
4075 else if (bfd_is_com_section (asect
))
4077 else if (bfd_is_und_section (asect
))
4081 Elf_Internal_Shdr
**i_shdrp
= elf_elfsections (abfd
);
4082 int maxindex
= elf_numsections (abfd
);
4084 for (index
= 1; index
< maxindex
; index
++)
4086 Elf_Internal_Shdr
*hdr
= i_shdrp
[index
];
4088 if (hdr
!= NULL
&& hdr
->bfd_section
== asect
)
4094 bed
= get_elf_backend_data (abfd
);
4095 if (bed
->elf_backend_section_from_bfd_section
)
4099 if ((*bed
->elf_backend_section_from_bfd_section
) (abfd
, asect
, &retval
))
4104 bfd_set_error (bfd_error_nonrepresentable_section
);
4109 /* Given a BFD symbol, return the index in the ELF symbol table, or -1
4113 _bfd_elf_symbol_from_bfd_symbol (abfd
, asym_ptr_ptr
)
4115 asymbol
**asym_ptr_ptr
;
4117 asymbol
*asym_ptr
= *asym_ptr_ptr
;
4119 flagword flags
= asym_ptr
->flags
;
4121 /* When gas creates relocations against local labels, it creates its
4122 own symbol for the section, but does put the symbol into the
4123 symbol chain, so udata is 0. When the linker is generating
4124 relocatable output, this section symbol may be for one of the
4125 input sections rather than the output section. */
4126 if (asym_ptr
->udata
.i
== 0
4127 && (flags
& BSF_SECTION_SYM
)
4128 && asym_ptr
->section
)
4132 if (asym_ptr
->section
->output_section
!= NULL
)
4133 indx
= asym_ptr
->section
->output_section
->index
;
4135 indx
= asym_ptr
->section
->index
;
4136 if (indx
< elf_num_section_syms (abfd
)
4137 && elf_section_syms (abfd
)[indx
] != NULL
)
4138 asym_ptr
->udata
.i
= elf_section_syms (abfd
)[indx
]->udata
.i
;
4141 idx
= asym_ptr
->udata
.i
;
4145 /* This case can occur when using --strip-symbol on a symbol
4146 which is used in a relocation entry. */
4147 (*_bfd_error_handler
)
4148 (_("%s: symbol `%s' required but not present"),
4149 bfd_archive_filename (abfd
), bfd_asymbol_name (asym_ptr
));
4150 bfd_set_error (bfd_error_no_symbols
);
4157 "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n",
4158 (long) asym_ptr
, asym_ptr
->name
, idx
, flags
,
4159 elf_symbol_flags (flags
));
4167 /* Copy private BFD data. This copies any program header information. */
4170 copy_private_bfd_data (ibfd
, obfd
)
4174 Elf_Internal_Ehdr
* iehdr
;
4175 struct elf_segment_map
* map
;
4176 struct elf_segment_map
* map_first
;
4177 struct elf_segment_map
** pointer_to_map
;
4178 Elf_Internal_Phdr
* segment
;
4181 unsigned int num_segments
;
4182 boolean phdr_included
= false;
4183 bfd_vma maxpagesize
;
4184 struct elf_segment_map
* phdr_adjust_seg
= NULL
;
4185 unsigned int phdr_adjust_num
= 0;
4187 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
4188 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
4191 if (elf_tdata (ibfd
)->phdr
== NULL
)
4194 iehdr
= elf_elfheader (ibfd
);
4197 pointer_to_map
= &map_first
;
4199 num_segments
= elf_elfheader (ibfd
)->e_phnum
;
4200 maxpagesize
= get_elf_backend_data (obfd
)->maxpagesize
;
4202 /* Returns the end address of the segment + 1. */
4203 #define SEGMENT_END(segment, start) \
4204 (start + (segment->p_memsz > segment->p_filesz \
4205 ? segment->p_memsz : segment->p_filesz))
4207 /* Returns true if the given section is contained within
4208 the given segment. VMA addresses are compared. */
4209 #define IS_CONTAINED_BY_VMA(section, segment) \
4210 (section->vma >= segment->p_vaddr \
4211 && (section->vma + section->_raw_size) \
4212 <= (SEGMENT_END (segment, segment->p_vaddr)))
4214 /* Returns true if the given section is contained within
4215 the given segment. LMA addresses are compared. */
4216 #define IS_CONTAINED_BY_LMA(section, segment, base) \
4217 (section->lma >= base \
4218 && (section->lma + section->_raw_size) \
4219 <= SEGMENT_END (segment, base))
4221 /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */
4222 #define IS_COREFILE_NOTE(p, s) \
4223 (p->p_type == PT_NOTE \
4224 && bfd_get_format (ibfd) == bfd_core \
4225 && s->vma == 0 && s->lma == 0 \
4226 && (bfd_vma) s->filepos >= p->p_offset \
4227 && (bfd_vma) s->filepos + s->_raw_size \
4228 <= p->p_offset + p->p_filesz)
4230 /* The complicated case when p_vaddr is 0 is to handle the Solaris
4231 linker, which generates a PT_INTERP section with p_vaddr and
4232 p_memsz set to 0. */
4233 #define IS_SOLARIS_PT_INTERP(p, s) \
4235 && p->p_filesz > 0 \
4236 && (s->flags & SEC_HAS_CONTENTS) != 0 \
4237 && s->_raw_size > 0 \
4238 && (bfd_vma) s->filepos >= p->p_offset \
4239 && ((bfd_vma) s->filepos + s->_raw_size \
4240 <= p->p_offset + p->p_filesz))
4242 /* Decide if the given section should be included in the given segment.
4243 A section will be included if:
4244 1. It is within the address space of the segment -- we use the LMA
4245 if that is set for the segment and the VMA otherwise,
4246 2. It is an allocated segment,
4247 3. There is an output section associated with it,
4248 4. The section has not already been allocated to a previous segment. */
4249 #define INCLUDE_SECTION_IN_SEGMENT(section, segment) \
4250 (((((segment->p_paddr \
4251 ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \
4252 : IS_CONTAINED_BY_VMA (section, segment)) \
4253 || IS_SOLARIS_PT_INTERP (segment, section)) \
4254 && (section->flags & SEC_ALLOC) != 0) \
4255 || IS_COREFILE_NOTE (segment, section)) \
4256 && section->output_section != NULL \
4257 && section->segment_mark == false)
4259 /* Returns true iff seg1 starts after the end of seg2. */
4260 #define SEGMENT_AFTER_SEGMENT(seg1, seg2) \
4261 (seg1->p_vaddr >= SEGMENT_END (seg2, seg2->p_vaddr))
4263 /* Returns true iff seg1 and seg2 overlap. */
4264 #define SEGMENT_OVERLAPS(seg1, seg2) \
4265 (!(SEGMENT_AFTER_SEGMENT (seg1, seg2) || SEGMENT_AFTER_SEGMENT (seg2, seg1)))
4267 /* Initialise the segment mark field. */
4268 for (section
= ibfd
->sections
; section
!= NULL
; section
= section
->next
)
4269 section
->segment_mark
= false;
4271 /* Scan through the segments specified in the program header
4272 of the input BFD. For this first scan we look for overlaps
4273 in the loadable segments. These can be created by weird
4274 parameters to objcopy. */
4275 for (i
= 0, segment
= elf_tdata (ibfd
)->phdr
;
4280 Elf_Internal_Phdr
*segment2
;
4282 if (segment
->p_type
!= PT_LOAD
)
4285 /* Determine if this segment overlaps any previous segments. */
4286 for (j
= 0, segment2
= elf_tdata (ibfd
)->phdr
; j
< i
; j
++, segment2
++)
4288 bfd_signed_vma extra_length
;
4290 if (segment2
->p_type
!= PT_LOAD
4291 || ! SEGMENT_OVERLAPS (segment
, segment2
))
4294 /* Merge the two segments together. */
4295 if (segment2
->p_vaddr
< segment
->p_vaddr
)
4297 /* Extend SEGMENT2 to include SEGMENT and then delete
4300 SEGMENT_END (segment
, segment
->p_vaddr
)
4301 - SEGMENT_END (segment2
, segment2
->p_vaddr
);
4303 if (extra_length
> 0)
4305 segment2
->p_memsz
+= extra_length
;
4306 segment2
->p_filesz
+= extra_length
;
4309 segment
->p_type
= PT_NULL
;
4311 /* Since we have deleted P we must restart the outer loop. */
4313 segment
= elf_tdata (ibfd
)->phdr
;
4318 /* Extend SEGMENT to include SEGMENT2 and then delete
4321 SEGMENT_END (segment2
, segment2
->p_vaddr
)
4322 - SEGMENT_END (segment
, segment
->p_vaddr
);
4324 if (extra_length
> 0)
4326 segment
->p_memsz
+= extra_length
;
4327 segment
->p_filesz
+= extra_length
;
4330 segment2
->p_type
= PT_NULL
;
4335 /* The second scan attempts to assign sections to segments. */
4336 for (i
= 0, segment
= elf_tdata (ibfd
)->phdr
;
4340 unsigned int section_count
;
4341 asection
** sections
;
4342 asection
* output_section
;
4344 bfd_vma matching_lma
;
4345 bfd_vma suggested_lma
;
4349 if (segment
->p_type
== PT_NULL
)
4352 /* Compute how many sections might be placed into this segment. */
4354 for (section
= ibfd
->sections
; section
!= NULL
; section
= section
->next
)
4355 if (INCLUDE_SECTION_IN_SEGMENT (section
, segment
))
4358 /* Allocate a segment map big enough to contain all of the
4359 sections we have selected. */
4360 amt
= sizeof (struct elf_segment_map
);
4361 amt
+= ((bfd_size_type
) section_count
- 1) * sizeof (asection
*);
4362 map
= (struct elf_segment_map
*) bfd_alloc (obfd
, amt
);
4366 /* Initialise the fields of the segment map. Default to
4367 using the physical address of the segment in the input BFD. */
4369 map
->p_type
= segment
->p_type
;
4370 map
->p_flags
= segment
->p_flags
;
4371 map
->p_flags_valid
= 1;
4372 map
->p_paddr
= segment
->p_paddr
;
4373 map
->p_paddr_valid
= 1;
4375 /* Determine if this segment contains the ELF file header
4376 and if it contains the program headers themselves. */
4377 map
->includes_filehdr
= (segment
->p_offset
== 0
4378 && segment
->p_filesz
>= iehdr
->e_ehsize
);
4380 map
->includes_phdrs
= 0;
4382 if (! phdr_included
|| segment
->p_type
!= PT_LOAD
)
4384 map
->includes_phdrs
=
4385 (segment
->p_offset
<= (bfd_vma
) iehdr
->e_phoff
4386 && (segment
->p_offset
+ segment
->p_filesz
4387 >= ((bfd_vma
) iehdr
->e_phoff
4388 + iehdr
->e_phnum
* iehdr
->e_phentsize
)));
4390 if (segment
->p_type
== PT_LOAD
&& map
->includes_phdrs
)
4391 phdr_included
= true;
4394 if (section_count
== 0)
4396 /* Special segments, such as the PT_PHDR segment, may contain
4397 no sections, but ordinary, loadable segments should contain
4399 if (segment
->p_type
== PT_LOAD
)
4401 (_("%s: warning: Empty loadable segment detected\n"),
4402 bfd_archive_filename (ibfd
));
4405 *pointer_to_map
= map
;
4406 pointer_to_map
= &map
->next
;
4411 /* Now scan the sections in the input BFD again and attempt
4412 to add their corresponding output sections to the segment map.
4413 The problem here is how to handle an output section which has
4414 been moved (ie had its LMA changed). There are four possibilities:
4416 1. None of the sections have been moved.
4417 In this case we can continue to use the segment LMA from the
4420 2. All of the sections have been moved by the same amount.
4421 In this case we can change the segment's LMA to match the LMA
4422 of the first section.
4424 3. Some of the sections have been moved, others have not.
4425 In this case those sections which have not been moved can be
4426 placed in the current segment which will have to have its size,
4427 and possibly its LMA changed, and a new segment or segments will
4428 have to be created to contain the other sections.
4430 4. The sections have been moved, but not be the same amount.
4431 In this case we can change the segment's LMA to match the LMA
4432 of the first section and we will have to create a new segment
4433 or segments to contain the other sections.
4435 In order to save time, we allocate an array to hold the section
4436 pointers that we are interested in. As these sections get assigned
4437 to a segment, they are removed from this array. */
4439 amt
= (bfd_size_type
) section_count
* sizeof (asection
*);
4440 sections
= (asection
**) bfd_malloc (amt
);
4441 if (sections
== NULL
)
4444 /* Step One: Scan for segment vs section LMA conflicts.
4445 Also add the sections to the section array allocated above.
4446 Also add the sections to the current segment. In the common
4447 case, where the sections have not been moved, this means that
4448 we have completely filled the segment, and there is nothing
4454 for (j
= 0, section
= ibfd
->sections
;
4456 section
= section
->next
)
4458 if (INCLUDE_SECTION_IN_SEGMENT (section
, segment
))
4460 output_section
= section
->output_section
;
4462 sections
[j
++] = section
;
4464 /* The Solaris native linker always sets p_paddr to 0.
4465 We try to catch that case here, and set it to the
4467 if (segment
->p_paddr
== 0
4468 && segment
->p_vaddr
!= 0
4470 && output_section
->lma
!= 0
4471 && (output_section
->vma
== (segment
->p_vaddr
4472 + (map
->includes_filehdr
4475 + (map
->includes_phdrs
4477 * iehdr
->e_phentsize
)
4479 map
->p_paddr
= segment
->p_vaddr
;
4481 /* Match up the physical address of the segment with the
4482 LMA address of the output section. */
4483 if (IS_CONTAINED_BY_LMA (output_section
, segment
, map
->p_paddr
)
4484 || IS_COREFILE_NOTE (segment
, section
))
4486 if (matching_lma
== 0)
4487 matching_lma
= output_section
->lma
;
4489 /* We assume that if the section fits within the segment
4490 then it does not overlap any other section within that
4492 map
->sections
[isec
++] = output_section
;
4494 else if (suggested_lma
== 0)
4495 suggested_lma
= output_section
->lma
;
4499 BFD_ASSERT (j
== section_count
);
4501 /* Step Two: Adjust the physical address of the current segment,
4503 if (isec
== section_count
)
4505 /* All of the sections fitted within the segment as currently
4506 specified. This is the default case. Add the segment to
4507 the list of built segments and carry on to process the next
4508 program header in the input BFD. */
4509 map
->count
= section_count
;
4510 *pointer_to_map
= map
;
4511 pointer_to_map
= &map
->next
;
4518 if (matching_lma
!= 0)
4520 /* At least one section fits inside the current segment.
4521 Keep it, but modify its physical address to match the
4522 LMA of the first section that fitted. */
4523 map
->p_paddr
= matching_lma
;
4527 /* None of the sections fitted inside the current segment.
4528 Change the current segment's physical address to match
4529 the LMA of the first section. */
4530 map
->p_paddr
= suggested_lma
;
4533 /* Offset the segment physical address from the lma
4534 to allow for space taken up by elf headers. */
4535 if (map
->includes_filehdr
)
4536 map
->p_paddr
-= iehdr
->e_ehsize
;
4538 if (map
->includes_phdrs
)
4540 map
->p_paddr
-= iehdr
->e_phnum
* iehdr
->e_phentsize
;
4542 /* iehdr->e_phnum is just an estimate of the number
4543 of program headers that we will need. Make a note
4544 here of the number we used and the segment we chose
4545 to hold these headers, so that we can adjust the
4546 offset when we know the correct value. */
4547 phdr_adjust_num
= iehdr
->e_phnum
;
4548 phdr_adjust_seg
= map
;
4552 /* Step Three: Loop over the sections again, this time assigning
4553 those that fit to the current segment and remvoing them from the
4554 sections array; but making sure not to leave large gaps. Once all
4555 possible sections have been assigned to the current segment it is
4556 added to the list of built segments and if sections still remain
4557 to be assigned, a new segment is constructed before repeating
4565 /* Fill the current segment with sections that fit. */
4566 for (j
= 0; j
< section_count
; j
++)
4568 section
= sections
[j
];
4570 if (section
== NULL
)
4573 output_section
= section
->output_section
;
4575 BFD_ASSERT (output_section
!= NULL
);
4577 if (IS_CONTAINED_BY_LMA (output_section
, segment
, map
->p_paddr
)
4578 || IS_COREFILE_NOTE (segment
, section
))
4580 if (map
->count
== 0)
4582 /* If the first section in a segment does not start at
4583 the beginning of the segment, then something is
4585 if (output_section
->lma
!=
4587 + (map
->includes_filehdr
? iehdr
->e_ehsize
: 0)
4588 + (map
->includes_phdrs
4589 ? iehdr
->e_phnum
* iehdr
->e_phentsize
4595 asection
* prev_sec
;
4597 prev_sec
= map
->sections
[map
->count
- 1];
4599 /* If the gap between the end of the previous section
4600 and the start of this section is more than
4601 maxpagesize then we need to start a new segment. */
4602 if ((BFD_ALIGN (prev_sec
->lma
+ prev_sec
->_raw_size
,
4604 < BFD_ALIGN (output_section
->lma
, maxpagesize
))
4605 || ((prev_sec
->lma
+ prev_sec
->_raw_size
)
4606 > output_section
->lma
))
4608 if (suggested_lma
== 0)
4609 suggested_lma
= output_section
->lma
;
4615 map
->sections
[map
->count
++] = output_section
;
4618 section
->segment_mark
= true;
4620 else if (suggested_lma
== 0)
4621 suggested_lma
= output_section
->lma
;
4624 BFD_ASSERT (map
->count
> 0);
4626 /* Add the current segment to the list of built segments. */
4627 *pointer_to_map
= map
;
4628 pointer_to_map
= &map
->next
;
4630 if (isec
< section_count
)
4632 /* We still have not allocated all of the sections to
4633 segments. Create a new segment here, initialise it
4634 and carry on looping. */
4635 amt
= sizeof (struct elf_segment_map
);
4636 amt
+= ((bfd_size_type
) section_count
- 1) * sizeof (asection
*);
4637 map
= (struct elf_segment_map
*) bfd_alloc (obfd
, amt
);
4641 /* Initialise the fields of the segment map. Set the physical
4642 physical address to the LMA of the first section that has
4643 not yet been assigned. */
4645 map
->p_type
= segment
->p_type
;
4646 map
->p_flags
= segment
->p_flags
;
4647 map
->p_flags_valid
= 1;
4648 map
->p_paddr
= suggested_lma
;
4649 map
->p_paddr_valid
= 1;
4650 map
->includes_filehdr
= 0;
4651 map
->includes_phdrs
= 0;
4654 while (isec
< section_count
);
4659 /* The Solaris linker creates program headers in which all the
4660 p_paddr fields are zero. When we try to objcopy or strip such a
4661 file, we get confused. Check for this case, and if we find it
4662 reset the p_paddr_valid fields. */
4663 for (map
= map_first
; map
!= NULL
; map
= map
->next
)
4664 if (map
->p_paddr
!= 0)
4668 for (map
= map_first
; map
!= NULL
; map
= map
->next
)
4669 map
->p_paddr_valid
= 0;
4672 elf_tdata (obfd
)->segment_map
= map_first
;
4674 /* If we had to estimate the number of program headers that were
4675 going to be needed, then check our estimate now and adjust
4676 the offset if necessary. */
4677 if (phdr_adjust_seg
!= NULL
)
4681 for (count
= 0, map
= map_first
; map
!= NULL
; map
= map
->next
)
4684 if (count
> phdr_adjust_num
)
4685 phdr_adjust_seg
->p_paddr
4686 -= (count
- phdr_adjust_num
) * iehdr
->e_phentsize
;
4690 /* Final Step: Sort the segments into ascending order of physical
4692 if (map_first
!= NULL
)
4694 struct elf_segment_map
*prev
;
4697 for (map
= map_first
->next
; map
!= NULL
; prev
= map
, map
= map
->next
)
4699 /* Yes I know - its a bubble sort.... */
4700 if (map
->next
!= NULL
&& (map
->next
->p_paddr
< map
->p_paddr
))
4702 /* Swap map and map->next. */
4703 prev
->next
= map
->next
;
4704 map
->next
= map
->next
->next
;
4705 prev
->next
->next
= map
;
4715 #undef IS_CONTAINED_BY_VMA
4716 #undef IS_CONTAINED_BY_LMA
4717 #undef IS_COREFILE_NOTE
4718 #undef IS_SOLARIS_PT_INTERP
4719 #undef INCLUDE_SECTION_IN_SEGMENT
4720 #undef SEGMENT_AFTER_SEGMENT
4721 #undef SEGMENT_OVERLAPS
4725 /* Copy private section information. This copies over the entsize
4726 field, and sometimes the info field. */
4729 _bfd_elf_copy_private_section_data (ibfd
, isec
, obfd
, osec
)
4735 Elf_Internal_Shdr
*ihdr
, *ohdr
;
4737 if (ibfd
->xvec
->flavour
!= bfd_target_elf_flavour
4738 || obfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
4741 /* Copy over private BFD data if it has not already been copied.
4742 This must be done here, rather than in the copy_private_bfd_data
4743 entry point, because the latter is called after the section
4744 contents have been set, which means that the program headers have
4745 already been worked out. */
4746 if (elf_tdata (obfd
)->segment_map
== NULL
4747 && elf_tdata (ibfd
)->phdr
!= NULL
)
4751 /* Only set up the segments if there are no more SEC_ALLOC
4752 sections. FIXME: This won't do the right thing if objcopy is
4753 used to remove the last SEC_ALLOC section, since objcopy
4754 won't call this routine in that case. */
4755 for (s
= isec
->next
; s
!= NULL
; s
= s
->next
)
4756 if ((s
->flags
& SEC_ALLOC
) != 0)
4760 if (! copy_private_bfd_data (ibfd
, obfd
))
4765 ihdr
= &elf_section_data (isec
)->this_hdr
;
4766 ohdr
= &elf_section_data (osec
)->this_hdr
;
4768 ohdr
->sh_entsize
= ihdr
->sh_entsize
;
4770 if (ihdr
->sh_type
== SHT_SYMTAB
4771 || ihdr
->sh_type
== SHT_DYNSYM
4772 || ihdr
->sh_type
== SHT_GNU_verneed
4773 || ihdr
->sh_type
== SHT_GNU_verdef
)
4774 ohdr
->sh_info
= ihdr
->sh_info
;
4776 elf_section_data (osec
)->use_rela_p
4777 = elf_section_data (isec
)->use_rela_p
;
4782 /* Copy private symbol information. If this symbol is in a section
4783 which we did not map into a BFD section, try to map the section
4784 index correctly. We use special macro definitions for the mapped
4785 section indices; these definitions are interpreted by the
4786 swap_out_syms function. */
4788 #define MAP_ONESYMTAB (SHN_HIOS + 1)
4789 #define MAP_DYNSYMTAB (SHN_HIOS + 2)
4790 #define MAP_STRTAB (SHN_HIOS + 3)
4791 #define MAP_SHSTRTAB (SHN_HIOS + 4)
4792 #define MAP_SYM_SHNDX (SHN_HIOS + 5)
4795 _bfd_elf_copy_private_symbol_data (ibfd
, isymarg
, obfd
, osymarg
)
4801 elf_symbol_type
*isym
, *osym
;
4803 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
4804 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
4807 isym
= elf_symbol_from (ibfd
, isymarg
);
4808 osym
= elf_symbol_from (obfd
, osymarg
);
4812 && bfd_is_abs_section (isym
->symbol
.section
))
4816 shndx
= isym
->internal_elf_sym
.st_shndx
;
4817 if (shndx
== elf_onesymtab (ibfd
))
4818 shndx
= MAP_ONESYMTAB
;
4819 else if (shndx
== elf_dynsymtab (ibfd
))
4820 shndx
= MAP_DYNSYMTAB
;
4821 else if (shndx
== elf_tdata (ibfd
)->strtab_section
)
4823 else if (shndx
== elf_tdata (ibfd
)->shstrtab_section
)
4824 shndx
= MAP_SHSTRTAB
;
4825 else if (shndx
== elf_tdata (ibfd
)->symtab_shndx_section
)
4826 shndx
= MAP_SYM_SHNDX
;
4827 osym
->internal_elf_sym
.st_shndx
= shndx
;
4833 /* Swap out the symbols. */
4836 swap_out_syms (abfd
, sttp
, relocatable_p
)
4838 struct bfd_strtab_hash
**sttp
;
4841 struct elf_backend_data
*bed
;
4844 struct bfd_strtab_hash
*stt
;
4845 Elf_Internal_Shdr
*symtab_hdr
;
4846 Elf_Internal_Shdr
*symtab_shndx_hdr
;
4847 Elf_Internal_Shdr
*symstrtab_hdr
;
4848 char *outbound_syms
;
4849 char *outbound_shndx
;
4853 if (!elf_map_symbols (abfd
))
4856 /* Dump out the symtabs. */
4857 stt
= _bfd_elf_stringtab_init ();
4861 bed
= get_elf_backend_data (abfd
);
4862 symcount
= bfd_get_symcount (abfd
);
4863 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4864 symtab_hdr
->sh_type
= SHT_SYMTAB
;
4865 symtab_hdr
->sh_entsize
= bed
->s
->sizeof_sym
;
4866 symtab_hdr
->sh_size
= symtab_hdr
->sh_entsize
* (symcount
+ 1);
4867 symtab_hdr
->sh_info
= elf_num_locals (abfd
) + 1;
4868 symtab_hdr
->sh_addralign
= bed
->s
->file_align
;
4870 symstrtab_hdr
= &elf_tdata (abfd
)->strtab_hdr
;
4871 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
4873 amt
= (bfd_size_type
) (1 + symcount
) * bed
->s
->sizeof_sym
;
4874 outbound_syms
= bfd_alloc (abfd
, amt
);
4875 if (outbound_syms
== NULL
)
4877 symtab_hdr
->contents
= (PTR
) outbound_syms
;
4879 outbound_shndx
= NULL
;
4880 symtab_shndx_hdr
= &elf_tdata (abfd
)->symtab_shndx_hdr
;
4881 if (symtab_shndx_hdr
->sh_name
!= 0)
4883 amt
= (bfd_size_type
) (1 + symcount
) * sizeof (Elf_External_Sym_Shndx
);
4884 outbound_shndx
= bfd_alloc (abfd
, amt
);
4885 if (outbound_shndx
== NULL
)
4887 memset (outbound_shndx
, 0, (unsigned long) amt
);
4888 symtab_shndx_hdr
->contents
= outbound_shndx
;
4889 symtab_shndx_hdr
->sh_type
= SHT_SYMTAB_SHNDX
;
4890 symtab_shndx_hdr
->sh_size
= amt
;
4891 symtab_shndx_hdr
->sh_addralign
= sizeof (Elf_External_Sym_Shndx
);
4892 symtab_shndx_hdr
->sh_entsize
= sizeof (Elf_External_Sym_Shndx
);
4895 /* now generate the data (for "contents") */
4897 /* Fill in zeroth symbol and swap it out. */
4898 Elf_Internal_Sym sym
;
4904 sym
.st_shndx
= SHN_UNDEF
;
4905 bed
->s
->swap_symbol_out (abfd
, &sym
, outbound_syms
, outbound_shndx
);
4906 outbound_syms
+= bed
->s
->sizeof_sym
;
4907 if (outbound_shndx
!= NULL
)
4908 outbound_shndx
+= sizeof (Elf_External_Sym_Shndx
);
4911 syms
= bfd_get_outsymbols (abfd
);
4912 for (idx
= 0; idx
< symcount
; idx
++)
4914 Elf_Internal_Sym sym
;
4915 bfd_vma value
= syms
[idx
]->value
;
4916 elf_symbol_type
*type_ptr
;
4917 flagword flags
= syms
[idx
]->flags
;
4920 if ((flags
& (BSF_SECTION_SYM
| BSF_GLOBAL
)) == BSF_SECTION_SYM
)
4922 /* Local section symbols have no name. */
4927 sym
.st_name
= (unsigned long) _bfd_stringtab_add (stt
,
4930 if (sym
.st_name
== (unsigned long) -1)
4934 type_ptr
= elf_symbol_from (abfd
, syms
[idx
]);
4936 if ((flags
& BSF_SECTION_SYM
) == 0
4937 && bfd_is_com_section (syms
[idx
]->section
))
4939 /* ELF common symbols put the alignment into the `value' field,
4940 and the size into the `size' field. This is backwards from
4941 how BFD handles it, so reverse it here. */
4942 sym
.st_size
= value
;
4943 if (type_ptr
== NULL
4944 || type_ptr
->internal_elf_sym
.st_value
== 0)
4945 sym
.st_value
= value
>= 16 ? 16 : (1 << bfd_log2 (value
));
4947 sym
.st_value
= type_ptr
->internal_elf_sym
.st_value
;
4948 sym
.st_shndx
= _bfd_elf_section_from_bfd_section
4949 (abfd
, syms
[idx
]->section
);
4953 asection
*sec
= syms
[idx
]->section
;
4956 if (sec
->output_section
)
4958 value
+= sec
->output_offset
;
4959 sec
= sec
->output_section
;
4961 /* Don't add in the section vma for relocatable output. */
4962 if (! relocatable_p
)
4964 sym
.st_value
= value
;
4965 sym
.st_size
= type_ptr
? type_ptr
->internal_elf_sym
.st_size
: 0;
4967 if (bfd_is_abs_section (sec
)
4969 && type_ptr
->internal_elf_sym
.st_shndx
!= 0)
4971 /* This symbol is in a real ELF section which we did
4972 not create as a BFD section. Undo the mapping done
4973 by copy_private_symbol_data. */
4974 shndx
= type_ptr
->internal_elf_sym
.st_shndx
;
4978 shndx
= elf_onesymtab (abfd
);
4981 shndx
= elf_dynsymtab (abfd
);
4984 shndx
= elf_tdata (abfd
)->strtab_section
;
4987 shndx
= elf_tdata (abfd
)->shstrtab_section
;
4990 shndx
= elf_tdata (abfd
)->symtab_shndx_section
;
4998 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
5004 /* Writing this would be a hell of a lot easier if
5005 we had some decent documentation on bfd, and
5006 knew what to expect of the library, and what to
5007 demand of applications. For example, it
5008 appears that `objcopy' might not set the
5009 section of a symbol to be a section that is
5010 actually in the output file. */
5011 sec2
= bfd_get_section_by_name (abfd
, sec
->name
);
5012 BFD_ASSERT (sec2
!= 0);
5013 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec2
);
5014 BFD_ASSERT (shndx
!= -1);
5018 sym
.st_shndx
= shndx
;
5021 if ((flags
& BSF_FUNCTION
) != 0)
5023 else if ((flags
& BSF_OBJECT
) != 0)
5028 /* Processor-specific types */
5029 if (type_ptr
!= NULL
5030 && bed
->elf_backend_get_symbol_type
)
5031 type
= ((*bed
->elf_backend_get_symbol_type
)
5032 (&type_ptr
->internal_elf_sym
, type
));
5034 if (flags
& BSF_SECTION_SYM
)
5036 if (flags
& BSF_GLOBAL
)
5037 sym
.st_info
= ELF_ST_INFO (STB_GLOBAL
, STT_SECTION
);
5039 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_SECTION
);
5041 else if (bfd_is_com_section (syms
[idx
]->section
))
5042 sym
.st_info
= ELF_ST_INFO (STB_GLOBAL
, type
);
5043 else if (bfd_is_und_section (syms
[idx
]->section
))
5044 sym
.st_info
= ELF_ST_INFO (((flags
& BSF_WEAK
)
5048 else if (flags
& BSF_FILE
)
5049 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_FILE
);
5052 int bind
= STB_LOCAL
;
5054 if (flags
& BSF_LOCAL
)
5056 else if (flags
& BSF_WEAK
)
5058 else if (flags
& BSF_GLOBAL
)
5061 sym
.st_info
= ELF_ST_INFO (bind
, type
);
5064 if (type_ptr
!= NULL
)
5065 sym
.st_other
= type_ptr
->internal_elf_sym
.st_other
;
5069 bed
->s
->swap_symbol_out (abfd
, &sym
, outbound_syms
, outbound_shndx
);
5070 outbound_syms
+= bed
->s
->sizeof_sym
;
5071 if (outbound_shndx
!= NULL
)
5072 outbound_shndx
+= sizeof (Elf_External_Sym_Shndx
);
5076 symstrtab_hdr
->sh_size
= _bfd_stringtab_size (stt
);
5077 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
5079 symstrtab_hdr
->sh_flags
= 0;
5080 symstrtab_hdr
->sh_addr
= 0;
5081 symstrtab_hdr
->sh_entsize
= 0;
5082 symstrtab_hdr
->sh_link
= 0;
5083 symstrtab_hdr
->sh_info
= 0;
5084 symstrtab_hdr
->sh_addralign
= 1;
5089 /* Return the number of bytes required to hold the symtab vector.
5091 Note that we base it on the count plus 1, since we will null terminate
5092 the vector allocated based on this size. However, the ELF symbol table
5093 always has a dummy entry as symbol #0, so it ends up even. */
5096 _bfd_elf_get_symtab_upper_bound (abfd
)
5101 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->symtab_hdr
;
5103 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
5104 symtab_size
= (symcount
- 1 + 1) * (sizeof (asymbol
*));
5110 _bfd_elf_get_dynamic_symtab_upper_bound (abfd
)
5115 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->dynsymtab_hdr
;
5117 if (elf_dynsymtab (abfd
) == 0)
5119 bfd_set_error (bfd_error_invalid_operation
);
5123 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
5124 symtab_size
= (symcount
- 1 + 1) * (sizeof (asymbol
*));
5130 _bfd_elf_get_reloc_upper_bound (abfd
, asect
)
5131 bfd
*abfd ATTRIBUTE_UNUSED
;
5134 return (asect
->reloc_count
+ 1) * sizeof (arelent
*);
5137 /* Canonicalize the relocs. */
5140 _bfd_elf_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
5148 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
5150 if (! bed
->s
->slurp_reloc_table (abfd
, section
, symbols
, false))
5153 tblptr
= section
->relocation
;
5154 for (i
= 0; i
< section
->reloc_count
; i
++)
5155 *relptr
++ = tblptr
++;
5159 return section
->reloc_count
;
5163 _bfd_elf_get_symtab (abfd
, alocation
)
5165 asymbol
**alocation
;
5167 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
5168 long symcount
= bed
->s
->slurp_symbol_table (abfd
, alocation
, false);
5171 bfd_get_symcount (abfd
) = symcount
;
5176 _bfd_elf_canonicalize_dynamic_symtab (abfd
, alocation
)
5178 asymbol
**alocation
;
5180 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
5181 return bed
->s
->slurp_symbol_table (abfd
, alocation
, true);
5184 /* Return the size required for the dynamic reloc entries. Any
5185 section that was actually installed in the BFD, and has type
5186 SHT_REL or SHT_RELA, and uses the dynamic symbol table, is
5187 considered to be a dynamic reloc section. */
5190 _bfd_elf_get_dynamic_reloc_upper_bound (abfd
)
5196 if (elf_dynsymtab (abfd
) == 0)
5198 bfd_set_error (bfd_error_invalid_operation
);
5202 ret
= sizeof (arelent
*);
5203 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
5204 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
5205 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_REL
5206 || elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
5207 ret
+= ((s
->_raw_size
/ elf_section_data (s
)->this_hdr
.sh_entsize
)
5208 * sizeof (arelent
*));
5213 /* Canonicalize the dynamic relocation entries. Note that we return
5214 the dynamic relocations as a single block, although they are
5215 actually associated with particular sections; the interface, which
5216 was designed for SunOS style shared libraries, expects that there
5217 is only one set of dynamic relocs. Any section that was actually
5218 installed in the BFD, and has type SHT_REL or SHT_RELA, and uses
5219 the dynamic symbol table, is considered to be a dynamic reloc
5223 _bfd_elf_canonicalize_dynamic_reloc (abfd
, storage
, syms
)
5228 boolean (*slurp_relocs
) PARAMS ((bfd
*, asection
*, asymbol
**, boolean
));
5232 if (elf_dynsymtab (abfd
) == 0)
5234 bfd_set_error (bfd_error_invalid_operation
);
5238 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
5240 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
5242 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
5243 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_REL
5244 || elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
5249 if (! (*slurp_relocs
) (abfd
, s
, syms
, true))
5251 count
= s
->_raw_size
/ elf_section_data (s
)->this_hdr
.sh_entsize
;
5253 for (i
= 0; i
< count
; i
++)
5264 /* Read in the version information. */
5267 _bfd_elf_slurp_version_tables (abfd
)
5270 bfd_byte
*contents
= NULL
;
5273 if (elf_dynverdef (abfd
) != 0)
5275 Elf_Internal_Shdr
*hdr
;
5276 Elf_External_Verdef
*everdef
;
5277 Elf_Internal_Verdef
*iverdef
;
5278 Elf_Internal_Verdef
*iverdefarr
;
5279 Elf_Internal_Verdef iverdefmem
;
5281 unsigned int maxidx
;
5283 hdr
= &elf_tdata (abfd
)->dynverdef_hdr
;
5285 contents
= (bfd_byte
*) bfd_malloc (hdr
->sh_size
);
5286 if (contents
== NULL
)
5288 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
5289 || bfd_bread ((PTR
) contents
, hdr
->sh_size
, abfd
) != hdr
->sh_size
)
5292 /* We know the number of entries in the section but not the maximum
5293 index. Therefore we have to run through all entries and find
5295 everdef
= (Elf_External_Verdef
*) contents
;
5297 for (i
= 0; i
< hdr
->sh_info
; ++i
)
5299 _bfd_elf_swap_verdef_in (abfd
, everdef
, &iverdefmem
);
5301 if ((iverdefmem
.vd_ndx
& ((unsigned) VERSYM_VERSION
)) > maxidx
)
5302 maxidx
= iverdefmem
.vd_ndx
& ((unsigned) VERSYM_VERSION
);
5304 everdef
= ((Elf_External_Verdef
*)
5305 ((bfd_byte
*) everdef
+ iverdefmem
.vd_next
));
5308 amt
= (bfd_size_type
) maxidx
* sizeof (Elf_Internal_Verdef
);
5309 elf_tdata (abfd
)->verdef
= (Elf_Internal_Verdef
*) bfd_zalloc (abfd
, amt
);
5310 if (elf_tdata (abfd
)->verdef
== NULL
)
5313 elf_tdata (abfd
)->cverdefs
= maxidx
;
5315 everdef
= (Elf_External_Verdef
*) contents
;
5316 iverdefarr
= elf_tdata (abfd
)->verdef
;
5317 for (i
= 0; i
< hdr
->sh_info
; i
++)
5319 Elf_External_Verdaux
*everdaux
;
5320 Elf_Internal_Verdaux
*iverdaux
;
5323 _bfd_elf_swap_verdef_in (abfd
, everdef
, &iverdefmem
);
5325 iverdef
= &iverdefarr
[(iverdefmem
.vd_ndx
& VERSYM_VERSION
) - 1];
5326 memcpy (iverdef
, &iverdefmem
, sizeof (Elf_Internal_Verdef
));
5328 iverdef
->vd_bfd
= abfd
;
5330 amt
= (bfd_size_type
) iverdef
->vd_cnt
* sizeof (Elf_Internal_Verdaux
);
5331 iverdef
->vd_auxptr
= (Elf_Internal_Verdaux
*) bfd_alloc (abfd
, amt
);
5332 if (iverdef
->vd_auxptr
== NULL
)
5335 everdaux
= ((Elf_External_Verdaux
*)
5336 ((bfd_byte
*) everdef
+ iverdef
->vd_aux
));
5337 iverdaux
= iverdef
->vd_auxptr
;
5338 for (j
= 0; j
< iverdef
->vd_cnt
; j
++, iverdaux
++)
5340 _bfd_elf_swap_verdaux_in (abfd
, everdaux
, iverdaux
);
5342 iverdaux
->vda_nodename
=
5343 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
5344 iverdaux
->vda_name
);
5345 if (iverdaux
->vda_nodename
== NULL
)
5348 if (j
+ 1 < iverdef
->vd_cnt
)
5349 iverdaux
->vda_nextptr
= iverdaux
+ 1;
5351 iverdaux
->vda_nextptr
= NULL
;
5353 everdaux
= ((Elf_External_Verdaux
*)
5354 ((bfd_byte
*) everdaux
+ iverdaux
->vda_next
));
5357 iverdef
->vd_nodename
= iverdef
->vd_auxptr
->vda_nodename
;
5359 if (i
+ 1 < hdr
->sh_info
)
5360 iverdef
->vd_nextdef
= iverdef
+ 1;
5362 iverdef
->vd_nextdef
= NULL
;
5364 everdef
= ((Elf_External_Verdef
*)
5365 ((bfd_byte
*) everdef
+ iverdef
->vd_next
));
5372 if (elf_dynverref (abfd
) != 0)
5374 Elf_Internal_Shdr
*hdr
;
5375 Elf_External_Verneed
*everneed
;
5376 Elf_Internal_Verneed
*iverneed
;
5379 hdr
= &elf_tdata (abfd
)->dynverref_hdr
;
5381 amt
= (bfd_size_type
) hdr
->sh_info
* sizeof (Elf_Internal_Verneed
);
5382 elf_tdata (abfd
)->verref
=
5383 (Elf_Internal_Verneed
*) bfd_zalloc (abfd
, amt
);
5384 if (elf_tdata (abfd
)->verref
== NULL
)
5387 elf_tdata (abfd
)->cverrefs
= hdr
->sh_info
;
5389 contents
= (bfd_byte
*) bfd_malloc (hdr
->sh_size
);
5390 if (contents
== NULL
)
5392 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
5393 || bfd_bread ((PTR
) contents
, hdr
->sh_size
, abfd
) != hdr
->sh_size
)
5396 everneed
= (Elf_External_Verneed
*) contents
;
5397 iverneed
= elf_tdata (abfd
)->verref
;
5398 for (i
= 0; i
< hdr
->sh_info
; i
++, iverneed
++)
5400 Elf_External_Vernaux
*evernaux
;
5401 Elf_Internal_Vernaux
*ivernaux
;
5404 _bfd_elf_swap_verneed_in (abfd
, everneed
, iverneed
);
5406 iverneed
->vn_bfd
= abfd
;
5408 iverneed
->vn_filename
=
5409 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
5411 if (iverneed
->vn_filename
== NULL
)
5414 amt
= iverneed
->vn_cnt
;
5415 amt
*= sizeof (Elf_Internal_Vernaux
);
5416 iverneed
->vn_auxptr
= (Elf_Internal_Vernaux
*) bfd_alloc (abfd
, amt
);
5418 evernaux
= ((Elf_External_Vernaux
*)
5419 ((bfd_byte
*) everneed
+ iverneed
->vn_aux
));
5420 ivernaux
= iverneed
->vn_auxptr
;
5421 for (j
= 0; j
< iverneed
->vn_cnt
; j
++, ivernaux
++)
5423 _bfd_elf_swap_vernaux_in (abfd
, evernaux
, ivernaux
);
5425 ivernaux
->vna_nodename
=
5426 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
5427 ivernaux
->vna_name
);
5428 if (ivernaux
->vna_nodename
== NULL
)
5431 if (j
+ 1 < iverneed
->vn_cnt
)
5432 ivernaux
->vna_nextptr
= ivernaux
+ 1;
5434 ivernaux
->vna_nextptr
= NULL
;
5436 evernaux
= ((Elf_External_Vernaux
*)
5437 ((bfd_byte
*) evernaux
+ ivernaux
->vna_next
));
5440 if (i
+ 1 < hdr
->sh_info
)
5441 iverneed
->vn_nextref
= iverneed
+ 1;
5443 iverneed
->vn_nextref
= NULL
;
5445 everneed
= ((Elf_External_Verneed
*)
5446 ((bfd_byte
*) everneed
+ iverneed
->vn_next
));
5456 if (contents
== NULL
)
5462 _bfd_elf_make_empty_symbol (abfd
)
5465 elf_symbol_type
*newsym
;
5466 bfd_size_type amt
= sizeof (elf_symbol_type
);
5468 newsym
= (elf_symbol_type
*) bfd_zalloc (abfd
, amt
);
5473 newsym
->symbol
.the_bfd
= abfd
;
5474 return &newsym
->symbol
;
5479 _bfd_elf_get_symbol_info (ignore_abfd
, symbol
, ret
)
5480 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
5484 bfd_symbol_info (symbol
, ret
);
5487 /* Return whether a symbol name implies a local symbol. Most targets
5488 use this function for the is_local_label_name entry point, but some
5492 _bfd_elf_is_local_label_name (abfd
, name
)
5493 bfd
*abfd ATTRIBUTE_UNUSED
;
5496 /* Normal local symbols start with ``.L''. */
5497 if (name
[0] == '.' && name
[1] == 'L')
5500 /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate
5501 DWARF debugging symbols starting with ``..''. */
5502 if (name
[0] == '.' && name
[1] == '.')
5505 /* gcc will sometimes generate symbols beginning with ``_.L_'' when
5506 emitting DWARF debugging output. I suspect this is actually a
5507 small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call
5508 ASM_GENERATE_INTERNAL_LABEL, and this causes the leading
5509 underscore to be emitted on some ELF targets). For ease of use,
5510 we treat such symbols as local. */
5511 if (name
[0] == '_' && name
[1] == '.' && name
[2] == 'L' && name
[3] == '_')
5518 _bfd_elf_get_lineno (ignore_abfd
, symbol
)
5519 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
5520 asymbol
*symbol ATTRIBUTE_UNUSED
;
5527 _bfd_elf_set_arch_mach (abfd
, arch
, machine
)
5529 enum bfd_architecture arch
;
5530 unsigned long machine
;
5532 /* If this isn't the right architecture for this backend, and this
5533 isn't the generic backend, fail. */
5534 if (arch
!= get_elf_backend_data (abfd
)->arch
5535 && arch
!= bfd_arch_unknown
5536 && get_elf_backend_data (abfd
)->arch
!= bfd_arch_unknown
)
5539 return bfd_default_set_arch_mach (abfd
, arch
, machine
);
5542 /* Find the function to a particular section and offset,
5543 for error reporting. */
5546 elf_find_function (abfd
, section
, symbols
, offset
,
5547 filename_ptr
, functionname_ptr
)
5548 bfd
*abfd ATTRIBUTE_UNUSED
;
5552 const char **filename_ptr
;
5553 const char **functionname_ptr
;
5555 const char *filename
;
5564 for (p
= symbols
; *p
!= NULL
; p
++)
5568 q
= (elf_symbol_type
*) *p
;
5570 if (bfd_get_section (&q
->symbol
) != section
)
5573 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
5578 filename
= bfd_asymbol_name (&q
->symbol
);
5582 if (q
->symbol
.section
== section
5583 && q
->symbol
.value
>= low_func
5584 && q
->symbol
.value
<= offset
)
5586 func
= (asymbol
*) q
;
5587 low_func
= q
->symbol
.value
;
5597 *filename_ptr
= filename
;
5598 if (functionname_ptr
)
5599 *functionname_ptr
= bfd_asymbol_name (func
);
5604 /* Find the nearest line to a particular section and offset,
5605 for error reporting. */
5608 _bfd_elf_find_nearest_line (abfd
, section
, symbols
, offset
,
5609 filename_ptr
, functionname_ptr
, line_ptr
)
5614 const char **filename_ptr
;
5615 const char **functionname_ptr
;
5616 unsigned int *line_ptr
;
5620 if (_bfd_dwarf1_find_nearest_line (abfd
, section
, symbols
, offset
,
5621 filename_ptr
, functionname_ptr
,
5624 if (!*functionname_ptr
)
5625 elf_find_function (abfd
, section
, symbols
, offset
,
5626 *filename_ptr
? NULL
: filename_ptr
,
5632 if (_bfd_dwarf2_find_nearest_line (abfd
, section
, symbols
, offset
,
5633 filename_ptr
, functionname_ptr
,
5635 &elf_tdata (abfd
)->dwarf2_find_line_info
))
5637 if (!*functionname_ptr
)
5638 elf_find_function (abfd
, section
, symbols
, offset
,
5639 *filename_ptr
? NULL
: filename_ptr
,
5645 if (! _bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
5646 &found
, filename_ptr
,
5647 functionname_ptr
, line_ptr
,
5648 &elf_tdata (abfd
)->line_info
))
5653 if (symbols
== NULL
)
5656 if (! elf_find_function (abfd
, section
, symbols
, offset
,
5657 filename_ptr
, functionname_ptr
))
5665 _bfd_elf_sizeof_headers (abfd
, reloc
)
5671 ret
= get_elf_backend_data (abfd
)->s
->sizeof_ehdr
;
5673 ret
+= get_program_header_size (abfd
);
5678 _bfd_elf_set_section_contents (abfd
, section
, location
, offset
, count
)
5683 bfd_size_type count
;
5685 Elf_Internal_Shdr
*hdr
;
5688 if (! abfd
->output_has_begun
5689 && ! _bfd_elf_compute_section_file_positions
5690 (abfd
, (struct bfd_link_info
*) NULL
))
5693 hdr
= &elf_section_data (section
)->this_hdr
;
5694 pos
= hdr
->sh_offset
+ offset
;
5695 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0
5696 || bfd_bwrite (location
, count
, abfd
) != count
)
5703 _bfd_elf_no_info_to_howto (abfd
, cache_ptr
, dst
)
5704 bfd
*abfd ATTRIBUTE_UNUSED
;
5705 arelent
*cache_ptr ATTRIBUTE_UNUSED
;
5706 Elf_Internal_Rela
*dst ATTRIBUTE_UNUSED
;
5713 _bfd_elf_no_info_to_howto_rel (abfd
, cache_ptr
, dst
)
5716 Elf_Internal_Rel
*dst
;
5722 /* Try to convert a non-ELF reloc into an ELF one. */
5725 _bfd_elf_validate_reloc (abfd
, areloc
)
5729 /* Check whether we really have an ELF howto. */
5731 if ((*areloc
->sym_ptr_ptr
)->the_bfd
->xvec
!= abfd
->xvec
)
5733 bfd_reloc_code_real_type code
;
5734 reloc_howto_type
*howto
;
5736 /* Alien reloc: Try to determine its type to replace it with an
5737 equivalent ELF reloc. */
5739 if (areloc
->howto
->pc_relative
)
5741 switch (areloc
->howto
->bitsize
)
5744 code
= BFD_RELOC_8_PCREL
;
5747 code
= BFD_RELOC_12_PCREL
;
5750 code
= BFD_RELOC_16_PCREL
;
5753 code
= BFD_RELOC_24_PCREL
;
5756 code
= BFD_RELOC_32_PCREL
;
5759 code
= BFD_RELOC_64_PCREL
;
5765 howto
= bfd_reloc_type_lookup (abfd
, code
);
5767 if (areloc
->howto
->pcrel_offset
!= howto
->pcrel_offset
)
5769 if (howto
->pcrel_offset
)
5770 areloc
->addend
+= areloc
->address
;
5772 areloc
->addend
-= areloc
->address
; /* addend is unsigned!! */
5777 switch (areloc
->howto
->bitsize
)
5783 code
= BFD_RELOC_14
;
5786 code
= BFD_RELOC_16
;
5789 code
= BFD_RELOC_26
;
5792 code
= BFD_RELOC_32
;
5795 code
= BFD_RELOC_64
;
5801 howto
= bfd_reloc_type_lookup (abfd
, code
);
5805 areloc
->howto
= howto
;
5813 (*_bfd_error_handler
)
5814 (_("%s: unsupported relocation type %s"),
5815 bfd_archive_filename (abfd
), areloc
->howto
->name
);
5816 bfd_set_error (bfd_error_bad_value
);
5821 _bfd_elf_close_and_cleanup (abfd
)
5824 if (bfd_get_format (abfd
) == bfd_object
)
5826 if (elf_shstrtab (abfd
) != NULL
)
5827 _bfd_elf_strtab_free (elf_shstrtab (abfd
));
5830 return _bfd_generic_close_and_cleanup (abfd
);
5833 /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY
5834 in the relocation's offset. Thus we cannot allow any sort of sanity
5835 range-checking to interfere. There is nothing else to do in processing
5838 bfd_reloc_status_type
5839 _bfd_elf_rel_vtable_reloc_fn (abfd
, re
, symbol
, data
, is
, obfd
, errmsg
)
5840 bfd
*abfd ATTRIBUTE_UNUSED
;
5841 arelent
*re ATTRIBUTE_UNUSED
;
5842 struct symbol_cache_entry
*symbol ATTRIBUTE_UNUSED
;
5843 PTR data ATTRIBUTE_UNUSED
;
5844 asection
*is ATTRIBUTE_UNUSED
;
5845 bfd
*obfd ATTRIBUTE_UNUSED
;
5846 char **errmsg ATTRIBUTE_UNUSED
;
5848 return bfd_reloc_ok
;
5851 /* Elf core file support. Much of this only works on native
5852 toolchains, since we rely on knowing the
5853 machine-dependent procfs structure in order to pick
5854 out details about the corefile. */
5856 #ifdef HAVE_SYS_PROCFS_H
5857 # include <sys/procfs.h>
5860 /* FIXME: this is kinda wrong, but it's what gdb wants. */
5863 elfcore_make_pid (abfd
)
5866 return ((elf_tdata (abfd
)->core_lwpid
<< 16)
5867 + (elf_tdata (abfd
)->core_pid
));
5870 /* If there isn't a section called NAME, make one, using
5871 data from SECT. Note, this function will generate a
5872 reference to NAME, so you shouldn't deallocate or
5876 elfcore_maybe_make_sect (abfd
, name
, sect
)
5883 if (bfd_get_section_by_name (abfd
, name
) != NULL
)
5886 sect2
= bfd_make_section (abfd
, name
);
5890 sect2
->_raw_size
= sect
->_raw_size
;
5891 sect2
->filepos
= sect
->filepos
;
5892 sect2
->flags
= sect
->flags
;
5893 sect2
->alignment_power
= sect
->alignment_power
;
5897 /* Create a pseudosection containing SIZE bytes at FILEPOS. This
5898 actually creates up to two pseudosections:
5899 - For the single-threaded case, a section named NAME, unless
5900 such a section already exists.
5901 - For the multi-threaded case, a section named "NAME/PID", where
5902 PID is elfcore_make_pid (abfd).
5903 Both pseudosections have identical contents. */
5905 _bfd_elfcore_make_pseudosection (abfd
, name
, size
, filepos
)
5912 char *threaded_name
;
5915 /* Build the section name. */
5917 sprintf (buf
, "%s/%d", name
, elfcore_make_pid (abfd
));
5918 threaded_name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
5919 if (threaded_name
== NULL
)
5921 strcpy (threaded_name
, buf
);
5923 sect
= bfd_make_section (abfd
, threaded_name
);
5926 sect
->_raw_size
= size
;
5927 sect
->filepos
= filepos
;
5928 sect
->flags
= SEC_HAS_CONTENTS
;
5929 sect
->alignment_power
= 2;
5931 return elfcore_maybe_make_sect (abfd
, name
, sect
);
5934 /* prstatus_t exists on:
5936 linux 2.[01] + glibc
5940 #if defined (HAVE_PRSTATUS_T)
5941 static boolean elfcore_grok_prstatus
PARAMS ((bfd
*, Elf_Internal_Note
*));
5944 elfcore_grok_prstatus (abfd
, note
)
5946 Elf_Internal_Note
*note
;
5951 if (note
->descsz
== sizeof (prstatus_t
))
5955 raw_size
= sizeof (prstat
.pr_reg
);
5956 offset
= offsetof (prstatus_t
, pr_reg
);
5957 memcpy (&prstat
, note
->descdata
, sizeof (prstat
));
5959 /* Do not overwrite the core signal if it
5960 has already been set by another thread. */
5961 if (elf_tdata (abfd
)->core_signal
== 0)
5962 elf_tdata (abfd
)->core_signal
= prstat
.pr_cursig
;
5963 elf_tdata (abfd
)->core_pid
= prstat
.pr_pid
;
5965 /* pr_who exists on:
5968 pr_who doesn't exist on:
5971 #if defined (HAVE_PRSTATUS_T_PR_WHO)
5972 elf_tdata (abfd
)->core_lwpid
= prstat
.pr_who
;
5975 #if defined (HAVE_PRSTATUS32_T)
5976 else if (note
->descsz
== sizeof (prstatus32_t
))
5978 /* 64-bit host, 32-bit corefile */
5979 prstatus32_t prstat
;
5981 raw_size
= sizeof (prstat
.pr_reg
);
5982 offset
= offsetof (prstatus32_t
, pr_reg
);
5983 memcpy (&prstat
, note
->descdata
, sizeof (prstat
));
5985 /* Do not overwrite the core signal if it
5986 has already been set by another thread. */
5987 if (elf_tdata (abfd
)->core_signal
== 0)
5988 elf_tdata (abfd
)->core_signal
= prstat
.pr_cursig
;
5989 elf_tdata (abfd
)->core_pid
= prstat
.pr_pid
;
5991 /* pr_who exists on:
5994 pr_who doesn't exist on:
5997 #if defined (HAVE_PRSTATUS32_T_PR_WHO)
5998 elf_tdata (abfd
)->core_lwpid
= prstat
.pr_who
;
6001 #endif /* HAVE_PRSTATUS32_T */
6004 /* Fail - we don't know how to handle any other
6005 note size (ie. data object type). */
6009 /* Make a ".reg/999" section and a ".reg" section. */
6010 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
6011 raw_size
, note
->descpos
+ offset
);
6013 #endif /* defined (HAVE_PRSTATUS_T) */
6015 /* Create a pseudosection containing the exact contents of NOTE. */
6017 elfcore_make_note_pseudosection (abfd
, name
, note
)
6020 Elf_Internal_Note
*note
;
6022 return _bfd_elfcore_make_pseudosection (abfd
, name
,
6023 note
->descsz
, note
->descpos
);
6026 /* There isn't a consistent prfpregset_t across platforms,
6027 but it doesn't matter, because we don't have to pick this
6028 data structure apart. */
6031 elfcore_grok_prfpreg (abfd
, note
)
6033 Elf_Internal_Note
*note
;
6035 return elfcore_make_note_pseudosection (abfd
, ".reg2", note
);
6038 /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note
6039 type of 5 (NT_PRXFPREG). Just include the whole note's contents
6043 elfcore_grok_prxfpreg (abfd
, note
)
6045 Elf_Internal_Note
*note
;
6047 return elfcore_make_note_pseudosection (abfd
, ".reg-xfp", note
);
6050 #if defined (HAVE_PRPSINFO_T)
6051 typedef prpsinfo_t elfcore_psinfo_t
;
6052 #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */
6053 typedef prpsinfo32_t elfcore_psinfo32_t
;
6057 #if defined (HAVE_PSINFO_T)
6058 typedef psinfo_t elfcore_psinfo_t
;
6059 #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */
6060 typedef psinfo32_t elfcore_psinfo32_t
;
6064 /* return a malloc'ed copy of a string at START which is at
6065 most MAX bytes long, possibly without a terminating '\0'.
6066 the copy will always have a terminating '\0'. */
6069 _bfd_elfcore_strndup (abfd
, start
, max
)
6075 char *end
= memchr (start
, '\0', max
);
6083 dups
= bfd_alloc (abfd
, (bfd_size_type
) len
+ 1);
6087 memcpy (dups
, start
, len
);
6093 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
6094 static boolean elfcore_grok_psinfo
PARAMS ((bfd
*, Elf_Internal_Note
*));
6097 elfcore_grok_psinfo (abfd
, note
)
6099 Elf_Internal_Note
*note
;
6101 if (note
->descsz
== sizeof (elfcore_psinfo_t
))
6103 elfcore_psinfo_t psinfo
;
6105 memcpy (&psinfo
, note
->descdata
, sizeof (psinfo
));
6107 elf_tdata (abfd
)->core_program
6108 = _bfd_elfcore_strndup (abfd
, psinfo
.pr_fname
,
6109 sizeof (psinfo
.pr_fname
));
6111 elf_tdata (abfd
)->core_command
6112 = _bfd_elfcore_strndup (abfd
, psinfo
.pr_psargs
,
6113 sizeof (psinfo
.pr_psargs
));
6115 #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T)
6116 else if (note
->descsz
== sizeof (elfcore_psinfo32_t
))
6118 /* 64-bit host, 32-bit corefile */
6119 elfcore_psinfo32_t psinfo
;
6121 memcpy (&psinfo
, note
->descdata
, sizeof (psinfo
));
6123 elf_tdata (abfd
)->core_program
6124 = _bfd_elfcore_strndup (abfd
, psinfo
.pr_fname
,
6125 sizeof (psinfo
.pr_fname
));
6127 elf_tdata (abfd
)->core_command
6128 = _bfd_elfcore_strndup (abfd
, psinfo
.pr_psargs
,
6129 sizeof (psinfo
.pr_psargs
));
6135 /* Fail - we don't know how to handle any other
6136 note size (ie. data object type). */
6140 /* Note that for some reason, a spurious space is tacked
6141 onto the end of the args in some (at least one anyway)
6142 implementations, so strip it off if it exists. */
6145 char *command
= elf_tdata (abfd
)->core_command
;
6146 int n
= strlen (command
);
6148 if (0 < n
&& command
[n
- 1] == ' ')
6149 command
[n
- 1] = '\0';
6154 #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */
6156 #if defined (HAVE_PSTATUS_T)
6157 static boolean elfcore_grok_pstatus
PARAMS ((bfd
*, Elf_Internal_Note
*));
6160 elfcore_grok_pstatus (abfd
, note
)
6162 Elf_Internal_Note
*note
;
6164 if (note
->descsz
== sizeof (pstatus_t
)
6165 #if defined (HAVE_PXSTATUS_T)
6166 || note
->descsz
== sizeof (pxstatus_t
)
6172 memcpy (&pstat
, note
->descdata
, sizeof (pstat
));
6174 elf_tdata (abfd
)->core_pid
= pstat
.pr_pid
;
6176 #if defined (HAVE_PSTATUS32_T)
6177 else if (note
->descsz
== sizeof (pstatus32_t
))
6179 /* 64-bit host, 32-bit corefile */
6182 memcpy (&pstat
, note
->descdata
, sizeof (pstat
));
6184 elf_tdata (abfd
)->core_pid
= pstat
.pr_pid
;
6187 /* Could grab some more details from the "representative"
6188 lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an
6189 NT_LWPSTATUS note, presumably. */
6193 #endif /* defined (HAVE_PSTATUS_T) */
6195 #if defined (HAVE_LWPSTATUS_T)
6196 static boolean elfcore_grok_lwpstatus
PARAMS ((bfd
*, Elf_Internal_Note
*));
6199 elfcore_grok_lwpstatus (abfd
, note
)
6201 Elf_Internal_Note
*note
;
6203 lwpstatus_t lwpstat
;
6208 if (note
->descsz
!= sizeof (lwpstat
)
6209 #if defined (HAVE_LWPXSTATUS_T)
6210 && note
->descsz
!= sizeof (lwpxstatus_t
)
6215 memcpy (&lwpstat
, note
->descdata
, sizeof (lwpstat
));
6217 elf_tdata (abfd
)->core_lwpid
= lwpstat
.pr_lwpid
;
6218 elf_tdata (abfd
)->core_signal
= lwpstat
.pr_cursig
;
6220 /* Make a ".reg/999" section. */
6222 sprintf (buf
, ".reg/%d", elfcore_make_pid (abfd
));
6223 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
6228 sect
= bfd_make_section (abfd
, name
);
6232 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
6233 sect
->_raw_size
= sizeof (lwpstat
.pr_context
.uc_mcontext
.gregs
);
6234 sect
->filepos
= note
->descpos
6235 + offsetof (lwpstatus_t
, pr_context
.uc_mcontext
.gregs
);
6238 #if defined (HAVE_LWPSTATUS_T_PR_REG)
6239 sect
->_raw_size
= sizeof (lwpstat
.pr_reg
);
6240 sect
->filepos
= note
->descpos
+ offsetof (lwpstatus_t
, pr_reg
);
6243 sect
->flags
= SEC_HAS_CONTENTS
;
6244 sect
->alignment_power
= 2;
6246 if (!elfcore_maybe_make_sect (abfd
, ".reg", sect
))
6249 /* Make a ".reg2/999" section */
6251 sprintf (buf
, ".reg2/%d", elfcore_make_pid (abfd
));
6252 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
6257 sect
= bfd_make_section (abfd
, name
);
6261 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
6262 sect
->_raw_size
= sizeof (lwpstat
.pr_context
.uc_mcontext
.fpregs
);
6263 sect
->filepos
= note
->descpos
6264 + offsetof (lwpstatus_t
, pr_context
.uc_mcontext
.fpregs
);
6267 #if defined (HAVE_LWPSTATUS_T_PR_FPREG)
6268 sect
->_raw_size
= sizeof (lwpstat
.pr_fpreg
);
6269 sect
->filepos
= note
->descpos
+ offsetof (lwpstatus_t
, pr_fpreg
);
6272 sect
->flags
= SEC_HAS_CONTENTS
;
6273 sect
->alignment_power
= 2;
6275 return elfcore_maybe_make_sect (abfd
, ".reg2", sect
);
6277 #endif /* defined (HAVE_LWPSTATUS_T) */
6279 #if defined (HAVE_WIN32_PSTATUS_T)
6281 elfcore_grok_win32pstatus (abfd
, note
)
6283 Elf_Internal_Note
*note
;
6288 win32_pstatus_t pstatus
;
6290 if (note
->descsz
< sizeof (pstatus
))
6293 memcpy (&pstatus
, note
->descdata
, sizeof (pstatus
));
6295 switch (pstatus
.data_type
)
6297 case NOTE_INFO_PROCESS
:
6298 /* FIXME: need to add ->core_command. */
6299 elf_tdata (abfd
)->core_signal
= pstatus
.data
.process_info
.signal
;
6300 elf_tdata (abfd
)->core_pid
= pstatus
.data
.process_info
.pid
;
6303 case NOTE_INFO_THREAD
:
6304 /* Make a ".reg/999" section. */
6305 sprintf (buf
, ".reg/%d", pstatus
.data
.thread_info
.tid
);
6307 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
6313 sect
= bfd_make_section (abfd
, name
);
6317 sect
->_raw_size
= sizeof (pstatus
.data
.thread_info
.thread_context
);
6318 sect
->filepos
= (note
->descpos
6319 + offsetof (struct win32_pstatus
,
6320 data
.thread_info
.thread_context
));
6321 sect
->flags
= SEC_HAS_CONTENTS
;
6322 sect
->alignment_power
= 2;
6324 if (pstatus
.data
.thread_info
.is_active_thread
)
6325 if (! elfcore_maybe_make_sect (abfd
, ".reg", sect
))
6329 case NOTE_INFO_MODULE
:
6330 /* Make a ".module/xxxxxxxx" section. */
6331 sprintf (buf
, ".module/%08x", pstatus
.data
.module_info
.base_address
);
6333 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
6339 sect
= bfd_make_section (abfd
, name
);
6344 sect
->_raw_size
= note
->descsz
;
6345 sect
->filepos
= note
->descpos
;
6346 sect
->flags
= SEC_HAS_CONTENTS
;
6347 sect
->alignment_power
= 2;
6356 #endif /* HAVE_WIN32_PSTATUS_T */
6359 elfcore_grok_note (abfd
, note
)
6361 Elf_Internal_Note
*note
;
6363 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
6371 if (bed
->elf_backend_grok_prstatus
)
6372 if ((*bed
->elf_backend_grok_prstatus
) (abfd
, note
))
6374 #if defined (HAVE_PRSTATUS_T)
6375 return elfcore_grok_prstatus (abfd
, note
);
6380 #if defined (HAVE_PSTATUS_T)
6382 return elfcore_grok_pstatus (abfd
, note
);
6385 #if defined (HAVE_LWPSTATUS_T)
6387 return elfcore_grok_lwpstatus (abfd
, note
);
6390 case NT_FPREGSET
: /* FIXME: rename to NT_PRFPREG */
6391 return elfcore_grok_prfpreg (abfd
, note
);
6393 #if defined (HAVE_WIN32_PSTATUS_T)
6394 case NT_WIN32PSTATUS
:
6395 return elfcore_grok_win32pstatus (abfd
, note
);
6398 case NT_PRXFPREG
: /* Linux SSE extension */
6399 if (note
->namesz
== 5
6400 && ! strcmp (note
->namedata
, "LINUX"))
6401 return elfcore_grok_prxfpreg (abfd
, note
);
6407 if (bed
->elf_backend_grok_psinfo
)
6408 if ((*bed
->elf_backend_grok_psinfo
) (abfd
, note
))
6410 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
6411 return elfcore_grok_psinfo (abfd
, note
);
6419 elfcore_netbsd_get_lwpid (note
, lwpidp
)
6420 Elf_Internal_Note
*note
;
6425 cp
= strchr (note
->namedata
, '@');
6435 elfcore_grok_netbsd_procinfo (abfd
, note
)
6437 Elf_Internal_Note
*note
;
6440 /* Signal number at offset 0x08. */
6441 elf_tdata (abfd
)->core_signal
6442 = bfd_h_get_32 (abfd
, (bfd_byte
*) note
->descdata
+ 0x08);
6444 /* Process ID at offset 0x50. */
6445 elf_tdata (abfd
)->core_pid
6446 = bfd_h_get_32 (abfd
, (bfd_byte
*) note
->descdata
+ 0x50);
6448 /* Command name at 0x7c (max 32 bytes, including nul). */
6449 elf_tdata (abfd
)->core_command
6450 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 0x7c, 31);
6456 elfcore_grok_netbsd_note (abfd
, note
)
6458 Elf_Internal_Note
*note
;
6462 if (elfcore_netbsd_get_lwpid (note
, &lwp
))
6463 elf_tdata (abfd
)->core_lwpid
= lwp
;
6465 if (note
->type
== NT_NETBSDCORE_PROCINFO
)
6467 /* NetBSD-specific core "procinfo". Note that we expect to
6468 find this note before any of the others, which is fine,
6469 since the kernel writes this note out first when it
6470 creates a core file. */
6472 return elfcore_grok_netbsd_procinfo (abfd
, note
);
6475 /* As of Jan 2002 there are no other machine-independent notes
6476 defined for NetBSD core files. If the note type is less
6477 than the start of the machine-dependent note types, we don't
6480 if (note
->type
< NT_NETBSDCORE_FIRSTMACH
)
6484 switch (bfd_get_arch (abfd
))
6486 /* On the Alpha, SPARC (32-bit and 64-bit), PT_GETREGS == mach+0 and
6487 PT_GETFPREGS == mach+2. */
6489 case bfd_arch_alpha
:
6490 case bfd_arch_sparc
:
6493 case NT_NETBSDCORE_FIRSTMACH
+0:
6494 return elfcore_make_note_pseudosection (abfd
, ".reg", note
);
6496 case NT_NETBSDCORE_FIRSTMACH
+2:
6497 return elfcore_make_note_pseudosection (abfd
, ".reg2", note
);
6503 /* On all other arch's, PT_GETREGS == mach+1 and
6504 PT_GETFPREGS == mach+3. */
6509 case NT_NETBSDCORE_FIRSTMACH
+1:
6510 return elfcore_make_note_pseudosection (abfd
, ".reg", note
);
6512 case NT_NETBSDCORE_FIRSTMACH
+3:
6513 return elfcore_make_note_pseudosection (abfd
, ".reg2", note
);
6522 /* Function: elfcore_write_note
6529 size of data for note
6532 End of buffer containing note. */
6535 elfcore_write_note (abfd
, buf
, bufsiz
, name
, type
, input
, size
)
6544 Elf_External_Note
*xnp
;
6545 int namesz
= strlen (name
);
6546 int newspace
= BFD_ALIGN (sizeof (Elf_External_Note
) + size
+ namesz
- 1, 4);
6549 p
= realloc (buf
, *bufsiz
+ newspace
);
6551 *bufsiz
+= newspace
;
6552 xnp
= (Elf_External_Note
*) dest
;
6553 H_PUT_32 (abfd
, namesz
, xnp
->namesz
);
6554 H_PUT_32 (abfd
, size
, xnp
->descsz
);
6555 H_PUT_32 (abfd
, type
, xnp
->type
);
6556 strcpy (xnp
->name
, name
);
6557 memcpy (xnp
->name
+ BFD_ALIGN (namesz
, 4), input
, size
);
6561 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
6563 elfcore_write_prpsinfo (abfd
, buf
, bufsiz
, fname
, psargs
)
6571 char *note_name
= "CORE";
6573 #if defined (HAVE_PSINFO_T)
6575 note_type
= NT_PSINFO
;
6578 note_type
= NT_PRPSINFO
;
6581 memset (&data
, 0, sizeof (data
));
6582 strncpy (data
.pr_fname
, fname
, sizeof (data
.pr_fname
));
6583 strncpy (data
.pr_psargs
, psargs
, sizeof (data
.pr_psargs
));
6584 return elfcore_write_note (abfd
, buf
, bufsiz
,
6585 note_name
, note_type
, &data
, sizeof (data
));
6587 #endif /* PSINFO_T or PRPSINFO_T */
6589 #if defined (HAVE_PRSTATUS_T)
6591 elfcore_write_prstatus (abfd
, buf
, bufsiz
, pid
, cursig
, gregs
)
6600 char *note_name
= "CORE";
6602 memset (&prstat
, 0, sizeof (prstat
));
6603 prstat
.pr_pid
= pid
;
6604 prstat
.pr_cursig
= cursig
;
6605 memcpy (&prstat
.pr_reg
, gregs
, sizeof (prstat
.pr_reg
));
6606 return elfcore_write_note (abfd
, buf
, bufsiz
,
6607 note_name
, NT_PRSTATUS
, &prstat
, sizeof (prstat
));
6609 #endif /* HAVE_PRSTATUS_T */
6611 #if defined (HAVE_LWPSTATUS_T)
6613 elfcore_write_lwpstatus (abfd
, buf
, bufsiz
, pid
, cursig
, gregs
)
6621 lwpstatus_t lwpstat
;
6622 char *note_name
= "CORE";
6624 memset (&lwpstat
, 0, sizeof (lwpstat
));
6625 lwpstat
.pr_lwpid
= pid
>> 16;
6626 lwpstat
.pr_cursig
= cursig
;
6627 #if defined (HAVE_LWPSTATUS_T_PR_REG)
6628 memcpy (lwpstat
.pr_reg
, gregs
, sizeof (lwpstat
.pr_reg
));
6629 #elif defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
6631 memcpy (lwpstat
.pr_context
.uc_mcontext
.gregs
,
6632 gregs
, sizeof (lwpstat
.pr_context
.uc_mcontext
.gregs
));
6634 memcpy (lwpstat
.pr_context
.uc_mcontext
.__gregs
,
6635 gregs
, sizeof (lwpstat
.pr_context
.uc_mcontext
.__gregs
));
6638 return elfcore_write_note (abfd
, buf
, bufsiz
, note_name
,
6639 NT_LWPSTATUS
, &lwpstat
, sizeof (lwpstat
));
6641 #endif /* HAVE_LWPSTATUS_T */
6643 #if defined (HAVE_PSTATUS_T)
6645 elfcore_write_pstatus (abfd
, buf
, bufsiz
, pid
, cursig
, gregs
)
6654 char *note_name
= "CORE";
6656 memset (&pstat
, 0, sizeof (pstat
));
6657 pstat
.pr_pid
= pid
& 0xffff;
6658 buf
= elfcore_write_note (abfd
, buf
, bufsiz
, note_name
,
6659 NT_PSTATUS
, &pstat
, sizeof (pstat
));
6662 #endif /* HAVE_PSTATUS_T */
6665 elfcore_write_prfpreg (abfd
, buf
, bufsiz
, fpregs
, size
)
6672 char *note_name
= "CORE";
6673 return elfcore_write_note (abfd
, buf
, bufsiz
,
6674 note_name
, NT_FPREGSET
, fpregs
, size
);
6678 elfcore_write_prxfpreg (abfd
, buf
, bufsiz
, xfpregs
, size
)
6685 char *note_name
= "LINUX";
6686 return elfcore_write_note (abfd
, buf
, bufsiz
,
6687 note_name
, NT_PRXFPREG
, xfpregs
, size
);
6691 elfcore_read_notes (abfd
, offset
, size
)
6702 if (bfd_seek (abfd
, offset
, SEEK_SET
) != 0)
6705 buf
= bfd_malloc (size
);
6709 if (bfd_bread (buf
, size
, abfd
) != size
)
6717 while (p
< buf
+ size
)
6719 /* FIXME: bad alignment assumption. */
6720 Elf_External_Note
*xnp
= (Elf_External_Note
*) p
;
6721 Elf_Internal_Note in
;
6723 in
.type
= H_GET_32 (abfd
, xnp
->type
);
6725 in
.namesz
= H_GET_32 (abfd
, xnp
->namesz
);
6726 in
.namedata
= xnp
->name
;
6728 in
.descsz
= H_GET_32 (abfd
, xnp
->descsz
);
6729 in
.descdata
= in
.namedata
+ BFD_ALIGN (in
.namesz
, 4);
6730 in
.descpos
= offset
+ (in
.descdata
- buf
);
6732 if (strncmp (in
.namedata
, "NetBSD-CORE", 11) == 0)
6734 if (! elfcore_grok_netbsd_note (abfd
, &in
))
6739 if (! elfcore_grok_note (abfd
, &in
))
6743 p
= in
.descdata
+ BFD_ALIGN (in
.descsz
, 4);
6750 /* Providing external access to the ELF program header table. */
6752 /* Return an upper bound on the number of bytes required to store a
6753 copy of ABFD's program header table entries. Return -1 if an error
6754 occurs; bfd_get_error will return an appropriate code. */
6757 bfd_get_elf_phdr_upper_bound (abfd
)
6760 if (abfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
6762 bfd_set_error (bfd_error_wrong_format
);
6766 return elf_elfheader (abfd
)->e_phnum
* sizeof (Elf_Internal_Phdr
);
6769 /* Copy ABFD's program header table entries to *PHDRS. The entries
6770 will be stored as an array of Elf_Internal_Phdr structures, as
6771 defined in include/elf/internal.h. To find out how large the
6772 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
6774 Return the number of program header table entries read, or -1 if an
6775 error occurs; bfd_get_error will return an appropriate code. */
6778 bfd_get_elf_phdrs (abfd
, phdrs
)
6784 if (abfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
6786 bfd_set_error (bfd_error_wrong_format
);
6790 num_phdrs
= elf_elfheader (abfd
)->e_phnum
;
6791 memcpy (phdrs
, elf_tdata (abfd
)->phdr
,
6792 num_phdrs
* sizeof (Elf_Internal_Phdr
));
6798 _bfd_elf_sprintf_vma (abfd
, buf
, value
)
6799 bfd
*abfd ATTRIBUTE_UNUSED
;
6804 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
6806 i_ehdrp
= elf_elfheader (abfd
);
6807 if (i_ehdrp
== NULL
)
6808 sprintf_vma (buf
, value
);
6811 if (i_ehdrp
->e_ident
[EI_CLASS
] == ELFCLASS64
)
6813 #if BFD_HOST_64BIT_LONG
6814 sprintf (buf
, "%016lx", value
);
6816 sprintf (buf
, "%08lx%08lx", _bfd_int64_high (value
),
6817 _bfd_int64_low (value
));
6821 sprintf (buf
, "%08lx", (unsigned long) (value
& 0xffffffff));
6824 sprintf_vma (buf
, value
);
6829 _bfd_elf_fprintf_vma (abfd
, stream
, value
)
6830 bfd
*abfd ATTRIBUTE_UNUSED
;
6835 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
6837 i_ehdrp
= elf_elfheader (abfd
);
6838 if (i_ehdrp
== NULL
)
6839 fprintf_vma ((FILE *) stream
, value
);
6842 if (i_ehdrp
->e_ident
[EI_CLASS
] == ELFCLASS64
)
6844 #if BFD_HOST_64BIT_LONG
6845 fprintf ((FILE *) stream
, "%016lx", value
);
6847 fprintf ((FILE *) stream
, "%08lx%08lx",
6848 _bfd_int64_high (value
), _bfd_int64_low (value
));
6852 fprintf ((FILE *) stream
, "%08lx",
6853 (unsigned long) (value
& 0xffffffff));
6856 fprintf_vma ((FILE *) stream
, value
);
6860 enum elf_reloc_type_class
6861 _bfd_elf_reloc_type_class (rela
)
6862 const Elf_Internal_Rela
*rela ATTRIBUTE_UNUSED
;
6864 return reloc_class_normal
;
6867 /* For RELA architectures, return what the relocation value for
6868 relocation against a local symbol. */
6871 _bfd_elf_rela_local_sym (abfd
, sym
, sec
, rel
)
6873 Elf_Internal_Sym
*sym
;
6875 Elf_Internal_Rela
*rel
;
6879 relocation
= (sec
->output_section
->vma
6880 + sec
->output_offset
6882 if ((sec
->flags
& SEC_MERGE
)
6883 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
6884 && elf_section_data (sec
)->sec_info_type
== ELF_INFO_TYPE_MERGE
)
6890 _bfd_merged_section_offset (abfd
, &msec
,
6891 elf_section_data (sec
)->sec_info
,
6892 sym
->st_value
+ rel
->r_addend
,
6895 rel
->r_addend
+= msec
->output_section
->vma
+ msec
->output_offset
;
6901 _bfd_elf_rel_local_sym (abfd
, sym
, psec
, addend
)
6903 Elf_Internal_Sym
*sym
;
6907 asection
*sec
= *psec
;
6909 if (elf_section_data (sec
)->sec_info_type
!= ELF_INFO_TYPE_MERGE
)
6910 return sym
->st_value
+ addend
;
6912 return _bfd_merged_section_offset (abfd
, psec
,
6913 elf_section_data (sec
)->sec_info
,
6914 sym
->st_value
+ addend
, (bfd_vma
) 0);
6918 _bfd_elf_section_offset (abfd
, info
, sec
, offset
)
6920 struct bfd_link_info
*info
;
6924 struct bfd_elf_section_data
*sec_data
;
6926 sec_data
= elf_section_data (sec
);
6927 switch (sec_data
->sec_info_type
)
6929 case ELF_INFO_TYPE_STABS
:
6930 return _bfd_stab_section_offset
6931 (abfd
, &elf_hash_table (info
)->merge_info
, sec
, &sec_data
->sec_info
,
6933 case ELF_INFO_TYPE_EH_FRAME
:
6934 return _bfd_elf_eh_frame_section_offset (abfd
, sec
, offset
);