1 /* ELF executable support for BFD.
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
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. */
26 BFD support for ELF formats is being worked on.
27 Currently, the best supported back ends are for sparc and i386
28 (running svr4 or Solaris 2).
30 Documentation of the internals of the support code still needs
31 to be written. The code is changing quickly enough that we
35 /* For sparc64-cross-sparc32. */
43 #include "libiberty.h"
45 static INLINE
struct elf_segment_map
*make_mapping
46 PARAMS ((bfd
*, asection
**, unsigned int, unsigned int, boolean
));
47 static boolean map_sections_to_segments
PARAMS ((bfd
*));
48 static int elf_sort_sections
PARAMS ((const PTR
, const PTR
));
49 static boolean assign_file_positions_for_segments
PARAMS ((bfd
*));
50 static boolean assign_file_positions_except_relocs
PARAMS ((bfd
*));
51 static boolean prep_headers
PARAMS ((bfd
*));
52 static boolean swap_out_syms
PARAMS ((bfd
*, struct bfd_strtab_hash
**, int));
53 static boolean copy_private_bfd_data
PARAMS ((bfd
*, bfd
*));
54 static char *elf_read
PARAMS ((bfd
*, file_ptr
, bfd_size_type
));
55 static boolean setup_group
PARAMS ((bfd
*, Elf_Internal_Shdr
*, asection
*));
56 static void elf_fake_sections
PARAMS ((bfd
*, asection
*, PTR
));
57 static void set_group_contents
PARAMS ((bfd
*, asection
*, PTR
));
58 static boolean assign_section_numbers
PARAMS ((bfd
*));
59 static INLINE
int sym_is_global
PARAMS ((bfd
*, asymbol
*));
60 static boolean elf_map_symbols
PARAMS ((bfd
*));
61 static bfd_size_type get_program_header_size
PARAMS ((bfd
*));
62 static boolean elfcore_read_notes
PARAMS ((bfd
*, file_ptr
, bfd_size_type
));
63 static boolean elf_find_function
PARAMS ((bfd
*, asection
*, asymbol
**,
64 bfd_vma
, const char **,
66 static int elfcore_make_pid
PARAMS ((bfd
*));
67 static boolean elfcore_maybe_make_sect
PARAMS ((bfd
*, char *, asection
*));
68 static boolean elfcore_make_note_pseudosection
PARAMS ((bfd
*, char *,
69 Elf_Internal_Note
*));
70 static boolean elfcore_grok_prfpreg
PARAMS ((bfd
*, Elf_Internal_Note
*));
71 static boolean elfcore_grok_prxfpreg
PARAMS ((bfd
*, Elf_Internal_Note
*));
72 static boolean elfcore_grok_note
PARAMS ((bfd
*, Elf_Internal_Note
*));
74 /* Swap version information in and out. The version information is
75 currently size independent. If that ever changes, this code will
76 need to move into elfcode.h. */
78 /* Swap in a Verdef structure. */
81 _bfd_elf_swap_verdef_in (abfd
, src
, dst
)
83 const Elf_External_Verdef
*src
;
84 Elf_Internal_Verdef
*dst
;
86 dst
->vd_version
= H_GET_16 (abfd
, src
->vd_version
);
87 dst
->vd_flags
= H_GET_16 (abfd
, src
->vd_flags
);
88 dst
->vd_ndx
= H_GET_16 (abfd
, src
->vd_ndx
);
89 dst
->vd_cnt
= H_GET_16 (abfd
, src
->vd_cnt
);
90 dst
->vd_hash
= H_GET_32 (abfd
, src
->vd_hash
);
91 dst
->vd_aux
= H_GET_32 (abfd
, src
->vd_aux
);
92 dst
->vd_next
= H_GET_32 (abfd
, src
->vd_next
);
95 /* Swap out a Verdef structure. */
98 _bfd_elf_swap_verdef_out (abfd
, src
, dst
)
100 const Elf_Internal_Verdef
*src
;
101 Elf_External_Verdef
*dst
;
103 H_PUT_16 (abfd
, src
->vd_version
, dst
->vd_version
);
104 H_PUT_16 (abfd
, src
->vd_flags
, dst
->vd_flags
);
105 H_PUT_16 (abfd
, src
->vd_ndx
, dst
->vd_ndx
);
106 H_PUT_16 (abfd
, src
->vd_cnt
, dst
->vd_cnt
);
107 H_PUT_32 (abfd
, src
->vd_hash
, dst
->vd_hash
);
108 H_PUT_32 (abfd
, src
->vd_aux
, dst
->vd_aux
);
109 H_PUT_32 (abfd
, src
->vd_next
, dst
->vd_next
);
112 /* Swap in a Verdaux structure. */
115 _bfd_elf_swap_verdaux_in (abfd
, src
, dst
)
117 const Elf_External_Verdaux
*src
;
118 Elf_Internal_Verdaux
*dst
;
120 dst
->vda_name
= H_GET_32 (abfd
, src
->vda_name
);
121 dst
->vda_next
= H_GET_32 (abfd
, src
->vda_next
);
124 /* Swap out a Verdaux structure. */
127 _bfd_elf_swap_verdaux_out (abfd
, src
, dst
)
129 const Elf_Internal_Verdaux
*src
;
130 Elf_External_Verdaux
*dst
;
132 H_PUT_32 (abfd
, src
->vda_name
, dst
->vda_name
);
133 H_PUT_32 (abfd
, src
->vda_next
, dst
->vda_next
);
136 /* Swap in a Verneed structure. */
139 _bfd_elf_swap_verneed_in (abfd
, src
, dst
)
141 const Elf_External_Verneed
*src
;
142 Elf_Internal_Verneed
*dst
;
144 dst
->vn_version
= H_GET_16 (abfd
, src
->vn_version
);
145 dst
->vn_cnt
= H_GET_16 (abfd
, src
->vn_cnt
);
146 dst
->vn_file
= H_GET_32 (abfd
, src
->vn_file
);
147 dst
->vn_aux
= H_GET_32 (abfd
, src
->vn_aux
);
148 dst
->vn_next
= H_GET_32 (abfd
, src
->vn_next
);
151 /* Swap out a Verneed structure. */
154 _bfd_elf_swap_verneed_out (abfd
, src
, dst
)
156 const Elf_Internal_Verneed
*src
;
157 Elf_External_Verneed
*dst
;
159 H_PUT_16 (abfd
, src
->vn_version
, dst
->vn_version
);
160 H_PUT_16 (abfd
, src
->vn_cnt
, dst
->vn_cnt
);
161 H_PUT_32 (abfd
, src
->vn_file
, dst
->vn_file
);
162 H_PUT_32 (abfd
, src
->vn_aux
, dst
->vn_aux
);
163 H_PUT_32 (abfd
, src
->vn_next
, dst
->vn_next
);
166 /* Swap in a Vernaux structure. */
169 _bfd_elf_swap_vernaux_in (abfd
, src
, dst
)
171 const Elf_External_Vernaux
*src
;
172 Elf_Internal_Vernaux
*dst
;
174 dst
->vna_hash
= H_GET_32 (abfd
, src
->vna_hash
);
175 dst
->vna_flags
= H_GET_16 (abfd
, src
->vna_flags
);
176 dst
->vna_other
= H_GET_16 (abfd
, src
->vna_other
);
177 dst
->vna_name
= H_GET_32 (abfd
, src
->vna_name
);
178 dst
->vna_next
= H_GET_32 (abfd
, src
->vna_next
);
181 /* Swap out a Vernaux structure. */
184 _bfd_elf_swap_vernaux_out (abfd
, src
, dst
)
186 const Elf_Internal_Vernaux
*src
;
187 Elf_External_Vernaux
*dst
;
189 H_PUT_32 (abfd
, src
->vna_hash
, dst
->vna_hash
);
190 H_PUT_16 (abfd
, src
->vna_flags
, dst
->vna_flags
);
191 H_PUT_16 (abfd
, src
->vna_other
, dst
->vna_other
);
192 H_PUT_32 (abfd
, src
->vna_name
, dst
->vna_name
);
193 H_PUT_32 (abfd
, src
->vna_next
, dst
->vna_next
);
196 /* Swap in a Versym structure. */
199 _bfd_elf_swap_versym_in (abfd
, src
, dst
)
201 const Elf_External_Versym
*src
;
202 Elf_Internal_Versym
*dst
;
204 dst
->vs_vers
= H_GET_16 (abfd
, src
->vs_vers
);
207 /* Swap out a Versym structure. */
210 _bfd_elf_swap_versym_out (abfd
, src
, dst
)
212 const Elf_Internal_Versym
*src
;
213 Elf_External_Versym
*dst
;
215 H_PUT_16 (abfd
, src
->vs_vers
, dst
->vs_vers
);
218 /* Standard ELF hash function. Do not change this function; you will
219 cause invalid hash tables to be generated. */
222 bfd_elf_hash (namearg
)
225 const unsigned char *name
= (const unsigned char *) namearg
;
230 while ((ch
= *name
++) != '\0')
233 if ((g
= (h
& 0xf0000000)) != 0)
236 /* The ELF ABI says `h &= ~g', but this is equivalent in
237 this case and on some machines one insn instead of two. */
244 /* Read a specified number of bytes at a specified offset in an ELF
245 file, into a newly allocated buffer, and return a pointer to the
249 elf_read (abfd
, offset
, size
)
256 if ((buf
= bfd_alloc (abfd
, size
)) == NULL
)
258 if (bfd_seek (abfd
, offset
, SEEK_SET
) != 0)
260 if (bfd_bread ((PTR
) buf
, size
, abfd
) != size
)
262 if (bfd_get_error () != bfd_error_system_call
)
263 bfd_set_error (bfd_error_file_truncated
);
270 bfd_elf_mkobject (abfd
)
273 /* This just does initialization. */
274 /* coff_mkobject zalloc's space for tdata.coff_obj_data ... */
275 bfd_size_type amt
= sizeof (struct elf_obj_tdata
);
276 elf_tdata (abfd
) = (struct elf_obj_tdata
*) bfd_zalloc (abfd
, amt
);
277 if (elf_tdata (abfd
) == 0)
279 /* Since everything is done at close time, do we need any
286 bfd_elf_mkcorefile (abfd
)
289 /* I think this can be done just like an object file. */
290 return bfd_elf_mkobject (abfd
);
294 bfd_elf_get_str_section (abfd
, shindex
)
296 unsigned int shindex
;
298 Elf_Internal_Shdr
**i_shdrp
;
299 char *shstrtab
= NULL
;
301 bfd_size_type shstrtabsize
;
303 i_shdrp
= elf_elfsections (abfd
);
304 if (i_shdrp
== 0 || i_shdrp
[shindex
] == 0)
307 shstrtab
= (char *) i_shdrp
[shindex
]->contents
;
308 if (shstrtab
== NULL
)
310 /* No cached one, attempt to read, and cache what we read. */
311 offset
= i_shdrp
[shindex
]->sh_offset
;
312 shstrtabsize
= i_shdrp
[shindex
]->sh_size
;
313 shstrtab
= elf_read (abfd
, offset
, shstrtabsize
);
314 i_shdrp
[shindex
]->contents
= (PTR
) shstrtab
;
320 bfd_elf_string_from_elf_section (abfd
, shindex
, strindex
)
322 unsigned int shindex
;
323 unsigned int strindex
;
325 Elf_Internal_Shdr
*hdr
;
330 hdr
= elf_elfsections (abfd
)[shindex
];
332 if (hdr
->contents
== NULL
333 && bfd_elf_get_str_section (abfd
, shindex
) == NULL
)
336 if (strindex
>= hdr
->sh_size
)
338 (*_bfd_error_handler
)
339 (_("%s: invalid string offset %u >= %lu for section `%s'"),
340 bfd_archive_filename (abfd
), strindex
, (unsigned long) hdr
->sh_size
,
341 ((shindex
== elf_elfheader(abfd
)->e_shstrndx
342 && strindex
== hdr
->sh_name
)
344 : elf_string_from_elf_strtab (abfd
, hdr
->sh_name
)));
348 return ((char *) hdr
->contents
) + strindex
;
351 /* Elf_Internal_Shdr->contents is an array of these for SHT_GROUP
352 sections. The first element is the flags, the rest are section
355 typedef union elf_internal_group
{
356 Elf_Internal_Shdr
*shdr
;
358 } Elf_Internal_Group
;
360 /* Set next_in_group list pointer, and group name for NEWSECT. */
363 setup_group (abfd
, hdr
, newsect
)
365 Elf_Internal_Shdr
*hdr
;
368 unsigned int num_group
= elf_tdata (abfd
)->num_group
;
370 /* If num_group is zero, read in all SHT_GROUP sections. The count
371 is set to -1 if there are no SHT_GROUP sections. */
374 unsigned int i
, shnum
;
376 /* First count the number of groups. If we have a SHT_GROUP
377 section with just a flag word (ie. sh_size is 4), ignore it. */
378 shnum
= elf_elfheader (abfd
)->e_shnum
;
380 for (i
= 0; i
< shnum
; i
++)
382 Elf_Internal_Shdr
*shdr
= elf_elfsections (abfd
)[i
];
383 if (shdr
->sh_type
== SHT_GROUP
&& shdr
->sh_size
>= 8)
388 num_group
= (unsigned) -1;
389 elf_tdata (abfd
)->num_group
= num_group
;
393 /* We keep a list of elf section headers for group sections,
394 so we can find them quickly. */
395 bfd_size_type amt
= num_group
* sizeof (Elf_Internal_Shdr
*);
396 elf_tdata (abfd
)->group_sect_ptr
= bfd_alloc (abfd
, amt
);
397 if (elf_tdata (abfd
)->group_sect_ptr
== NULL
)
401 for (i
= 0; i
< shnum
; i
++)
403 Elf_Internal_Shdr
*shdr
= elf_elfsections (abfd
)[i
];
404 if (shdr
->sh_type
== SHT_GROUP
&& shdr
->sh_size
>= 8)
407 Elf_Internal_Group
*dest
;
409 /* Add to list of sections. */
410 elf_tdata (abfd
)->group_sect_ptr
[num_group
] = shdr
;
413 /* Read the raw contents. */
414 BFD_ASSERT (sizeof (*dest
) >= 4);
415 amt
= shdr
->sh_size
* sizeof (*dest
) / 4;
416 shdr
->contents
= bfd_alloc (abfd
, amt
);
417 if (shdr
->contents
== NULL
418 || bfd_seek (abfd
, shdr
->sh_offset
, SEEK_SET
) != 0
419 || (bfd_bread (shdr
->contents
, shdr
->sh_size
, abfd
)
423 /* Translate raw contents, a flag word followed by an
424 array of elf section indices all in target byte order,
425 to the flag word followed by an array of elf section
427 src
= shdr
->contents
+ shdr
->sh_size
;
428 dest
= (Elf_Internal_Group
*) (shdr
->contents
+ amt
);
435 idx
= H_GET_32 (abfd
, src
);
436 if (src
== shdr
->contents
)
443 ((*_bfd_error_handler
)
444 (_("%s: invalid SHT_GROUP entry"),
445 bfd_archive_filename (abfd
)));
448 dest
->shdr
= elf_elfsections (abfd
)[idx
];
455 if (num_group
!= (unsigned) -1)
459 for (i
= 0; i
< num_group
; i
++)
461 Elf_Internal_Shdr
*shdr
= elf_tdata (abfd
)->group_sect_ptr
[i
];
462 Elf_Internal_Group
*idx
= (Elf_Internal_Group
*) shdr
->contents
;
463 unsigned int n_elt
= shdr
->sh_size
/ 4;
465 /* Look through this group's sections to see if current
466 section is a member. */
468 if ((++idx
)->shdr
== hdr
)
472 /* We are a member of this group. Go looking through
473 other members to see if any others are linked via
475 idx
= (Elf_Internal_Group
*) shdr
->contents
;
476 n_elt
= shdr
->sh_size
/ 4;
478 if ((s
= (++idx
)->shdr
->bfd_section
) != NULL
479 && elf_next_in_group (s
) != NULL
)
483 /* Snarf the group name from other member, and
484 insert current section in circular list. */
485 elf_group_name (newsect
) = elf_group_name (s
);
486 elf_next_in_group (newsect
) = elf_next_in_group (s
);
487 elf_next_in_group (s
) = newsect
;
491 struct elf_backend_data
*bed
;
493 unsigned char ename
[4];
497 /* Humbug. Get the name from the group signature
498 symbol. Why isn't the signature just a string?
499 Fortunately, the name index is at the same
500 place in the external symbol for both 32 and 64
502 bed
= get_elf_backend_data (abfd
);
503 pos
= elf_tdata (abfd
)->symtab_hdr
.sh_offset
;
504 pos
+= shdr
->sh_info
* bed
->s
->sizeof_sym
;
505 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0
506 || bfd_bread (ename
, (bfd_size_type
) 4, abfd
) != 4)
508 iname
= H_GET_32 (abfd
, ename
);
509 gname
= elf_string_from_elf_strtab (abfd
, iname
);
510 elf_group_name (newsect
) = gname
;
512 /* Start a circular list with one element. */
513 elf_next_in_group (newsect
) = newsect
;
515 if (shdr
->bfd_section
!= NULL
)
516 elf_next_in_group (shdr
->bfd_section
) = newsect
;
523 if (elf_group_name (newsect
) == NULL
)
525 (*_bfd_error_handler
) (_("%s: no group info for section %s"),
526 bfd_archive_filename (abfd
), newsect
->name
);
531 /* Make a BFD section from an ELF section. We store a pointer to the
532 BFD section in the bfd_section field of the header. */
535 _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
)
537 Elf_Internal_Shdr
*hdr
;
542 struct elf_backend_data
*bed
;
544 if (hdr
->bfd_section
!= NULL
)
546 BFD_ASSERT (strcmp (name
,
547 bfd_get_section_name (abfd
, hdr
->bfd_section
)) == 0);
551 newsect
= bfd_make_section_anyway (abfd
, name
);
555 newsect
->filepos
= hdr
->sh_offset
;
557 if (! bfd_set_section_vma (abfd
, newsect
, hdr
->sh_addr
)
558 || ! bfd_set_section_size (abfd
, newsect
, hdr
->sh_size
)
559 || ! bfd_set_section_alignment (abfd
, newsect
,
560 bfd_log2 ((bfd_vma
) hdr
->sh_addralign
)))
563 flags
= SEC_NO_FLAGS
;
564 if (hdr
->sh_type
!= SHT_NOBITS
)
565 flags
|= SEC_HAS_CONTENTS
;
566 if (hdr
->sh_type
== SHT_GROUP
)
567 flags
|= SEC_GROUP
| SEC_EXCLUDE
;
568 if ((hdr
->sh_flags
& SHF_ALLOC
) != 0)
571 if (hdr
->sh_type
!= SHT_NOBITS
)
574 if ((hdr
->sh_flags
& SHF_WRITE
) == 0)
575 flags
|= SEC_READONLY
;
576 if ((hdr
->sh_flags
& SHF_EXECINSTR
) != 0)
578 else if ((flags
& SEC_LOAD
) != 0)
580 if ((hdr
->sh_flags
& SHF_MERGE
) != 0)
583 newsect
->entsize
= hdr
->sh_entsize
;
584 if ((hdr
->sh_flags
& SHF_STRINGS
) != 0)
585 flags
|= SEC_STRINGS
;
587 if (hdr
->sh_flags
& SHF_GROUP
)
588 if (!setup_group (abfd
, hdr
, newsect
))
591 /* The debugging sections appear to be recognized only by name, not
594 static const char *debug_sec_names
[] =
603 for (i
= ARRAY_SIZE (debug_sec_names
); i
--;)
604 if (strncmp (name
, debug_sec_names
[i
], strlen (debug_sec_names
[i
])) == 0)
608 flags
|= SEC_DEBUGGING
;
611 /* As a GNU extension, if the name begins with .gnu.linkonce, we
612 only link a single copy of the section. This is used to support
613 g++. g++ will emit each template expansion in its own section.
614 The symbols will be defined as weak, so that multiple definitions
615 are permitted. The GNU linker extension is to actually discard
616 all but one of the sections. */
617 if (strncmp (name
, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0)
618 flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_DISCARD
;
620 bed
= get_elf_backend_data (abfd
);
621 if (bed
->elf_backend_section_flags
)
622 if (! bed
->elf_backend_section_flags (&flags
, hdr
))
625 if (! bfd_set_section_flags (abfd
, newsect
, flags
))
628 if ((flags
& SEC_ALLOC
) != 0)
630 Elf_Internal_Phdr
*phdr
;
633 /* Look through the phdrs to see if we need to adjust the lma.
634 If all the p_paddr fields are zero, we ignore them, since
635 some ELF linkers produce such output. */
636 phdr
= elf_tdata (abfd
)->phdr
;
637 for (i
= 0; i
< elf_elfheader (abfd
)->e_phnum
; i
++, phdr
++)
639 if (phdr
->p_paddr
!= 0)
642 if (i
< elf_elfheader (abfd
)->e_phnum
)
644 phdr
= elf_tdata (abfd
)->phdr
;
645 for (i
= 0; i
< elf_elfheader (abfd
)->e_phnum
; i
++, phdr
++)
647 /* This section is part of this segment if its file
648 offset plus size lies within the segment's memory
649 span and, if the section is loaded, the extent of the
650 loaded data lies within the extent of the segment.
651 If the p_paddr field is not set, we don't alter the
653 if (phdr
->p_type
== PT_LOAD
655 && (bfd_vma
) hdr
->sh_offset
>= phdr
->p_offset
656 && (hdr
->sh_offset
+ hdr
->sh_size
657 <= phdr
->p_offset
+ phdr
->p_memsz
)
658 && ((flags
& SEC_LOAD
) == 0
659 || (phdr
->p_offset
+ phdr
->p_filesz
660 >= hdr
->sh_offset
+ hdr
->sh_size
)))
662 /* We used to do a relative adjustment here, but
663 that doesn't work if the segment is packed with
664 code from multiple VMAs. Instead we calculate
665 the LMA absoultely, based on the LMA of the
666 segment (it is assumed that the segment will
667 contain sections with contiguous LMAs, even if
668 the VMAs are not). */
669 newsect
->lma
= phdr
->p_paddr
670 + hdr
->sh_offset
- phdr
->p_offset
;
677 hdr
->bfd_section
= newsect
;
678 elf_section_data (newsect
)->this_hdr
= *hdr
;
688 struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name);
691 Helper functions for GDB to locate the string tables.
692 Since BFD hides string tables from callers, GDB needs to use an
693 internal hook to find them. Sun's .stabstr, in particular,
694 isn't even pointed to by the .stab section, so ordinary
695 mechanisms wouldn't work to find it, even if we had some.
698 struct elf_internal_shdr
*
699 bfd_elf_find_section (abfd
, name
)
703 Elf_Internal_Shdr
**i_shdrp
;
708 i_shdrp
= elf_elfsections (abfd
);
711 shstrtab
= bfd_elf_get_str_section
712 (abfd
, elf_elfheader (abfd
)->e_shstrndx
);
713 if (shstrtab
!= NULL
)
715 max
= elf_elfheader (abfd
)->e_shnum
;
716 for (i
= 1; i
< max
; i
++)
717 if (!strcmp (&shstrtab
[i_shdrp
[i
]->sh_name
], name
))
724 const char *const bfd_elf_section_type_names
[] = {
725 "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB",
726 "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE",
727 "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM",
730 /* ELF relocs are against symbols. If we are producing relocateable
731 output, and the reloc is against an external symbol, and nothing
732 has given us any additional addend, the resulting reloc will also
733 be against the same symbol. In such a case, we don't want to
734 change anything about the way the reloc is handled, since it will
735 all be done at final link time. Rather than put special case code
736 into bfd_perform_relocation, all the reloc types use this howto
737 function. It just short circuits the reloc if producing
738 relocateable output against an external symbol. */
740 bfd_reloc_status_type
741 bfd_elf_generic_reloc (abfd
,
748 bfd
*abfd ATTRIBUTE_UNUSED
;
749 arelent
*reloc_entry
;
751 PTR data ATTRIBUTE_UNUSED
;
752 asection
*input_section
;
754 char **error_message ATTRIBUTE_UNUSED
;
756 if (output_bfd
!= (bfd
*) NULL
757 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
758 && (! reloc_entry
->howto
->partial_inplace
759 || reloc_entry
->addend
== 0))
761 reloc_entry
->address
+= input_section
->output_offset
;
765 return bfd_reloc_continue
;
768 /* Finish SHF_MERGE section merging. */
771 _bfd_elf_merge_sections (abfd
, info
)
773 struct bfd_link_info
*info
;
775 if (!is_elf_hash_table (info
))
777 if (elf_hash_table (info
)->merge_info
)
778 _bfd_merge_sections (abfd
, elf_hash_table (info
)->merge_info
);
782 /* Print out the program headers. */
785 _bfd_elf_print_private_bfd_data (abfd
, farg
)
789 FILE *f
= (FILE *) farg
;
790 Elf_Internal_Phdr
*p
;
792 bfd_byte
*dynbuf
= NULL
;
794 p
= elf_tdata (abfd
)->phdr
;
799 fprintf (f
, _("\nProgram Header:\n"));
800 c
= elf_elfheader (abfd
)->e_phnum
;
801 for (i
= 0; i
< c
; i
++, p
++)
808 case PT_NULL
: pt
= "NULL"; break;
809 case PT_LOAD
: pt
= "LOAD"; break;
810 case PT_DYNAMIC
: pt
= "DYNAMIC"; break;
811 case PT_INTERP
: pt
= "INTERP"; break;
812 case PT_NOTE
: pt
= "NOTE"; break;
813 case PT_SHLIB
: pt
= "SHLIB"; break;
814 case PT_PHDR
: pt
= "PHDR"; break;
815 default: sprintf (buf
, "0x%lx", p
->p_type
); pt
= buf
; break;
817 fprintf (f
, "%8s off 0x", pt
);
818 bfd_fprintf_vma (abfd
, f
, p
->p_offset
);
819 fprintf (f
, " vaddr 0x");
820 bfd_fprintf_vma (abfd
, f
, p
->p_vaddr
);
821 fprintf (f
, " paddr 0x");
822 bfd_fprintf_vma (abfd
, f
, p
->p_paddr
);
823 fprintf (f
, " align 2**%u\n", bfd_log2 (p
->p_align
));
824 fprintf (f
, " filesz 0x");
825 bfd_fprintf_vma (abfd
, f
, p
->p_filesz
);
826 fprintf (f
, " memsz 0x");
827 bfd_fprintf_vma (abfd
, f
, p
->p_memsz
);
828 fprintf (f
, " flags %c%c%c",
829 (p
->p_flags
& PF_R
) != 0 ? 'r' : '-',
830 (p
->p_flags
& PF_W
) != 0 ? 'w' : '-',
831 (p
->p_flags
& PF_X
) != 0 ? 'x' : '-');
832 if ((p
->p_flags
&~ (unsigned) (PF_R
| PF_W
| PF_X
)) != 0)
833 fprintf (f
, " %lx", p
->p_flags
&~ (unsigned) (PF_R
| PF_W
| PF_X
));
838 s
= bfd_get_section_by_name (abfd
, ".dynamic");
842 unsigned long shlink
;
843 bfd_byte
*extdyn
, *extdynend
;
845 void (*swap_dyn_in
) PARAMS ((bfd
*, const PTR
, Elf_Internal_Dyn
*));
847 fprintf (f
, _("\nDynamic Section:\n"));
849 dynbuf
= (bfd_byte
*) bfd_malloc (s
->_raw_size
);
852 if (! bfd_get_section_contents (abfd
, s
, (PTR
) dynbuf
, (file_ptr
) 0,
856 elfsec
= _bfd_elf_section_from_bfd_section (abfd
, s
);
859 shlink
= elf_elfsections (abfd
)[elfsec
]->sh_link
;
861 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
862 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
865 extdynend
= extdyn
+ s
->_raw_size
;
866 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
868 Elf_Internal_Dyn dyn
;
873 (*swap_dyn_in
) (abfd
, (PTR
) extdyn
, &dyn
);
875 if (dyn
.d_tag
== DT_NULL
)
882 sprintf (ab
, "0x%lx", (unsigned long) dyn
.d_tag
);
886 case DT_NEEDED
: name
= "NEEDED"; stringp
= true; break;
887 case DT_PLTRELSZ
: name
= "PLTRELSZ"; break;
888 case DT_PLTGOT
: name
= "PLTGOT"; break;
889 case DT_HASH
: name
= "HASH"; break;
890 case DT_STRTAB
: name
= "STRTAB"; break;
891 case DT_SYMTAB
: name
= "SYMTAB"; break;
892 case DT_RELA
: name
= "RELA"; break;
893 case DT_RELASZ
: name
= "RELASZ"; break;
894 case DT_RELAENT
: name
= "RELAENT"; break;
895 case DT_STRSZ
: name
= "STRSZ"; break;
896 case DT_SYMENT
: name
= "SYMENT"; break;
897 case DT_INIT
: name
= "INIT"; break;
898 case DT_FINI
: name
= "FINI"; break;
899 case DT_SONAME
: name
= "SONAME"; stringp
= true; break;
900 case DT_RPATH
: name
= "RPATH"; stringp
= true; break;
901 case DT_SYMBOLIC
: name
= "SYMBOLIC"; break;
902 case DT_REL
: name
= "REL"; break;
903 case DT_RELSZ
: name
= "RELSZ"; break;
904 case DT_RELENT
: name
= "RELENT"; break;
905 case DT_PLTREL
: name
= "PLTREL"; break;
906 case DT_DEBUG
: name
= "DEBUG"; break;
907 case DT_TEXTREL
: name
= "TEXTREL"; break;
908 case DT_JMPREL
: name
= "JMPREL"; break;
909 case DT_BIND_NOW
: name
= "BIND_NOW"; break;
910 case DT_INIT_ARRAY
: name
= "INIT_ARRAY"; break;
911 case DT_FINI_ARRAY
: name
= "FINI_ARRAY"; break;
912 case DT_INIT_ARRAYSZ
: name
= "INIT_ARRAYSZ"; break;
913 case DT_FINI_ARRAYSZ
: name
= "FINI_ARRAYSZ"; break;
914 case DT_RUNPATH
: name
= "RUNPATH"; stringp
= true; break;
915 case DT_FLAGS
: name
= "FLAGS"; break;
916 case DT_PREINIT_ARRAY
: name
= "PREINIT_ARRAY"; break;
917 case DT_PREINIT_ARRAYSZ
: name
= "PREINIT_ARRAYSZ"; break;
918 case DT_CHECKSUM
: name
= "CHECKSUM"; break;
919 case DT_PLTPADSZ
: name
= "PLTPADSZ"; break;
920 case DT_MOVEENT
: name
= "MOVEENT"; break;
921 case DT_MOVESZ
: name
= "MOVESZ"; break;
922 case DT_FEATURE
: name
= "FEATURE"; break;
923 case DT_POSFLAG_1
: name
= "POSFLAG_1"; break;
924 case DT_SYMINSZ
: name
= "SYMINSZ"; break;
925 case DT_SYMINENT
: name
= "SYMINENT"; break;
926 case DT_CONFIG
: name
= "CONFIG"; stringp
= true; break;
927 case DT_DEPAUDIT
: name
= "DEPAUDIT"; stringp
= true; break;
928 case DT_AUDIT
: name
= "AUDIT"; stringp
= true; break;
929 case DT_PLTPAD
: name
= "PLTPAD"; break;
930 case DT_MOVETAB
: name
= "MOVETAB"; break;
931 case DT_SYMINFO
: name
= "SYMINFO"; break;
932 case DT_RELACOUNT
: name
= "RELACOUNT"; break;
933 case DT_RELCOUNT
: name
= "RELCOUNT"; break;
934 case DT_FLAGS_1
: name
= "FLAGS_1"; break;
935 case DT_VERSYM
: name
= "VERSYM"; break;
936 case DT_VERDEF
: name
= "VERDEF"; break;
937 case DT_VERDEFNUM
: name
= "VERDEFNUM"; break;
938 case DT_VERNEED
: name
= "VERNEED"; break;
939 case DT_VERNEEDNUM
: name
= "VERNEEDNUM"; break;
940 case DT_AUXILIARY
: name
= "AUXILIARY"; stringp
= true; break;
941 case DT_USED
: name
= "USED"; break;
942 case DT_FILTER
: name
= "FILTER"; stringp
= true; break;
945 fprintf (f
, " %-11s ", name
);
947 fprintf (f
, "0x%lx", (unsigned long) dyn
.d_un
.d_val
);
951 unsigned int tagv
= dyn
.d_un
.d_val
;
953 string
= bfd_elf_string_from_elf_section (abfd
, shlink
, tagv
);
956 fprintf (f
, "%s", string
);
965 if ((elf_dynverdef (abfd
) != 0 && elf_tdata (abfd
)->verdef
== NULL
)
966 || (elf_dynverref (abfd
) != 0 && elf_tdata (abfd
)->verref
== NULL
))
968 if (! _bfd_elf_slurp_version_tables (abfd
))
972 if (elf_dynverdef (abfd
) != 0)
974 Elf_Internal_Verdef
*t
;
976 fprintf (f
, _("\nVersion definitions:\n"));
977 for (t
= elf_tdata (abfd
)->verdef
; t
!= NULL
; t
= t
->vd_nextdef
)
979 fprintf (f
, "%d 0x%2.2x 0x%8.8lx %s\n", t
->vd_ndx
,
980 t
->vd_flags
, t
->vd_hash
, t
->vd_nodename
);
981 if (t
->vd_auxptr
->vda_nextptr
!= NULL
)
983 Elf_Internal_Verdaux
*a
;
986 for (a
= t
->vd_auxptr
->vda_nextptr
;
989 fprintf (f
, "%s ", a
->vda_nodename
);
995 if (elf_dynverref (abfd
) != 0)
997 Elf_Internal_Verneed
*t
;
999 fprintf (f
, _("\nVersion References:\n"));
1000 for (t
= elf_tdata (abfd
)->verref
; t
!= NULL
; t
= t
->vn_nextref
)
1002 Elf_Internal_Vernaux
*a
;
1004 fprintf (f
, _(" required from %s:\n"), t
->vn_filename
);
1005 for (a
= t
->vn_auxptr
; a
!= NULL
; a
= a
->vna_nextptr
)
1006 fprintf (f
, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a
->vna_hash
,
1007 a
->vna_flags
, a
->vna_other
, a
->vna_nodename
);
1019 /* Display ELF-specific fields of a symbol. */
1022 bfd_elf_print_symbol (abfd
, filep
, symbol
, how
)
1026 bfd_print_symbol_type how
;
1028 FILE *file
= (FILE *) filep
;
1031 case bfd_print_symbol_name
:
1032 fprintf (file
, "%s", symbol
->name
);
1034 case bfd_print_symbol_more
:
1035 fprintf (file
, "elf ");
1036 bfd_fprintf_vma (abfd
, file
, symbol
->value
);
1037 fprintf (file
, " %lx", (long) symbol
->flags
);
1039 case bfd_print_symbol_all
:
1041 const char *section_name
;
1042 const char *name
= NULL
;
1043 struct elf_backend_data
*bed
;
1044 unsigned char st_other
;
1047 section_name
= symbol
->section
? symbol
->section
->name
: "(*none*)";
1049 bed
= get_elf_backend_data (abfd
);
1050 if (bed
->elf_backend_print_symbol_all
)
1051 name
= (*bed
->elf_backend_print_symbol_all
) (abfd
, filep
, symbol
);
1055 name
= symbol
->name
;
1056 bfd_print_symbol_vandf (abfd
, (PTR
) file
, symbol
);
1059 fprintf (file
, " %s\t", section_name
);
1060 /* Print the "other" value for a symbol. For common symbols,
1061 we've already printed the size; now print the alignment.
1062 For other symbols, we have no specified alignment, and
1063 we've printed the address; now print the size. */
1064 if (bfd_is_com_section (symbol
->section
))
1065 val
= ((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_value
;
1067 val
= ((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_size
;
1068 bfd_fprintf_vma (abfd
, file
, val
);
1070 /* If we have version information, print it. */
1071 if (elf_tdata (abfd
)->dynversym_section
!= 0
1072 && (elf_tdata (abfd
)->dynverdef_section
!= 0
1073 || elf_tdata (abfd
)->dynverref_section
!= 0))
1075 unsigned int vernum
;
1076 const char *version_string
;
1078 vernum
= ((elf_symbol_type
*) symbol
)->version
& VERSYM_VERSION
;
1081 version_string
= "";
1082 else if (vernum
== 1)
1083 version_string
= "Base";
1084 else if (vernum
<= elf_tdata (abfd
)->cverdefs
)
1086 elf_tdata (abfd
)->verdef
[vernum
- 1].vd_nodename
;
1089 Elf_Internal_Verneed
*t
;
1091 version_string
= "";
1092 for (t
= elf_tdata (abfd
)->verref
;
1096 Elf_Internal_Vernaux
*a
;
1098 for (a
= t
->vn_auxptr
; a
!= NULL
; a
= a
->vna_nextptr
)
1100 if (a
->vna_other
== vernum
)
1102 version_string
= a
->vna_nodename
;
1109 if ((((elf_symbol_type
*) symbol
)->version
& VERSYM_HIDDEN
) == 0)
1110 fprintf (file
, " %-11s", version_string
);
1115 fprintf (file
, " (%s)", version_string
);
1116 for (i
= 10 - strlen (version_string
); i
> 0; --i
)
1121 /* If the st_other field is not zero, print it. */
1122 st_other
= ((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_other
;
1127 case STV_INTERNAL
: fprintf (file
, " .internal"); break;
1128 case STV_HIDDEN
: fprintf (file
, " .hidden"); break;
1129 case STV_PROTECTED
: fprintf (file
, " .protected"); break;
1131 /* Some other non-defined flags are also present, so print
1133 fprintf (file
, " 0x%02x", (unsigned int) st_other
);
1136 fprintf (file
, " %s", name
);
1142 /* Create an entry in an ELF linker hash table. */
1144 struct bfd_hash_entry
*
1145 _bfd_elf_link_hash_newfunc (entry
, table
, string
)
1146 struct bfd_hash_entry
*entry
;
1147 struct bfd_hash_table
*table
;
1150 /* Allocate the structure if it has not already been allocated by a
1154 entry
= bfd_hash_allocate (table
, sizeof (struct elf_link_hash_entry
));
1159 /* Call the allocation method of the superclass. */
1160 entry
= _bfd_link_hash_newfunc (entry
, table
, string
);
1163 struct elf_link_hash_entry
*ret
= (struct elf_link_hash_entry
*) entry
;
1164 struct elf_link_hash_table
*htab
= (struct elf_link_hash_table
*) table
;
1166 /* Set local fields. */
1170 ret
->dynstr_index
= 0;
1171 ret
->weakdef
= NULL
;
1172 ret
->got
.refcount
= htab
->init_refcount
;
1173 ret
->plt
.refcount
= htab
->init_refcount
;
1174 ret
->linker_section_pointer
= NULL
;
1175 ret
->verinfo
.verdef
= NULL
;
1176 ret
->vtable_entries_used
= NULL
;
1177 ret
->vtable_entries_size
= 0;
1178 ret
->vtable_parent
= NULL
;
1179 ret
->type
= STT_NOTYPE
;
1181 /* Assume that we have been called by a non-ELF symbol reader.
1182 This flag is then reset by the code which reads an ELF input
1183 file. This ensures that a symbol created by a non-ELF symbol
1184 reader will have the flag set correctly. */
1185 ret
->elf_link_hash_flags
= ELF_LINK_NON_ELF
;
1191 /* Copy data from an indirect symbol to its direct symbol, hiding the
1192 old indirect symbol. Also used for copying flags to a weakdef. */
1195 _bfd_elf_link_hash_copy_indirect (dir
, ind
)
1196 struct elf_link_hash_entry
*dir
, *ind
;
1200 /* Copy down any references that we may have already seen to the
1201 symbol which just became indirect. */
1203 dir
->elf_link_hash_flags
|=
1204 (ind
->elf_link_hash_flags
1205 & (ELF_LINK_HASH_REF_DYNAMIC
1206 | ELF_LINK_HASH_REF_REGULAR
1207 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
1208 | ELF_LINK_NON_GOT_REF
));
1210 if (ind
->root
.type
!= bfd_link_hash_indirect
)
1213 /* Copy over the global and procedure linkage table refcount entries.
1214 These may have been already set up by a check_relocs routine. */
1215 tmp
= dir
->got
.refcount
;
1218 dir
->got
.refcount
= ind
->got
.refcount
;
1219 ind
->got
.refcount
= tmp
;
1222 BFD_ASSERT (ind
->got
.refcount
<= 0);
1224 tmp
= dir
->plt
.refcount
;
1227 dir
->plt
.refcount
= ind
->plt
.refcount
;
1228 ind
->plt
.refcount
= tmp
;
1231 BFD_ASSERT (ind
->plt
.refcount
<= 0);
1233 if (dir
->dynindx
== -1)
1235 dir
->dynindx
= ind
->dynindx
;
1236 dir
->dynstr_index
= ind
->dynstr_index
;
1238 ind
->dynstr_index
= 0;
1241 BFD_ASSERT (ind
->dynindx
== -1);
1245 _bfd_elf_link_hash_hide_symbol (info
, h
)
1246 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
1247 struct elf_link_hash_entry
*h
;
1249 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
1250 h
->plt
.offset
= (bfd_vma
) -1;
1251 if ((h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) != 0)
1255 /* Initialize an ELF linker hash table. */
1258 _bfd_elf_link_hash_table_init (table
, abfd
, newfunc
)
1259 struct elf_link_hash_table
*table
;
1261 struct bfd_hash_entry
*(*newfunc
) PARAMS ((struct bfd_hash_entry
*,
1262 struct bfd_hash_table
*,
1267 table
->dynamic_sections_created
= false;
1268 table
->dynobj
= NULL
;
1269 table
->init_refcount
= get_elf_backend_data (abfd
)->can_refcount
- 1;
1270 /* The first dynamic symbol is a dummy. */
1271 table
->dynsymcount
= 1;
1272 table
->dynstr
= NULL
;
1273 table
->bucketcount
= 0;
1274 table
->needed
= NULL
;
1275 table
->runpath
= NULL
;
1277 table
->stab_info
= NULL
;
1278 table
->merge_info
= NULL
;
1279 table
->dynlocal
= NULL
;
1280 ret
= _bfd_link_hash_table_init (& table
->root
, abfd
, newfunc
);
1281 table
->root
.type
= bfd_link_elf_hash_table
;
1286 /* Create an ELF linker hash table. */
1288 struct bfd_link_hash_table
*
1289 _bfd_elf_link_hash_table_create (abfd
)
1292 struct elf_link_hash_table
*ret
;
1293 bfd_size_type amt
= sizeof (struct elf_link_hash_table
);
1295 ret
= (struct elf_link_hash_table
*) bfd_alloc (abfd
, amt
);
1296 if (ret
== (struct elf_link_hash_table
*) NULL
)
1299 if (! _bfd_elf_link_hash_table_init (ret
, abfd
, _bfd_elf_link_hash_newfunc
))
1301 bfd_release (abfd
, ret
);
1308 /* This is a hook for the ELF emulation code in the generic linker to
1309 tell the backend linker what file name to use for the DT_NEEDED
1310 entry for a dynamic object. The generic linker passes name as an
1311 empty string to indicate that no DT_NEEDED entry should be made. */
1314 bfd_elf_set_dt_needed_name (abfd
, name
)
1318 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1319 && bfd_get_format (abfd
) == bfd_object
)
1320 elf_dt_name (abfd
) = name
;
1324 bfd_elf_set_dt_needed_soname (abfd
, name
)
1328 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1329 && bfd_get_format (abfd
) == bfd_object
)
1330 elf_dt_soname (abfd
) = name
;
1333 /* Get the list of DT_NEEDED entries for a link. This is a hook for
1334 the linker ELF emulation code. */
1336 struct bfd_link_needed_list
*
1337 bfd_elf_get_needed_list (abfd
, info
)
1338 bfd
*abfd ATTRIBUTE_UNUSED
;
1339 struct bfd_link_info
*info
;
1341 if (info
->hash
->creator
->flavour
!= bfd_target_elf_flavour
)
1343 return elf_hash_table (info
)->needed
;
1346 /* Get the list of DT_RPATH/DT_RUNPATH entries for a link. This is a
1347 hook for the linker ELF emulation code. */
1349 struct bfd_link_needed_list
*
1350 bfd_elf_get_runpath_list (abfd
, info
)
1351 bfd
*abfd ATTRIBUTE_UNUSED
;
1352 struct bfd_link_info
*info
;
1354 if (info
->hash
->creator
->flavour
!= bfd_target_elf_flavour
)
1356 return elf_hash_table (info
)->runpath
;
1359 /* Get the name actually used for a dynamic object for a link. This
1360 is the SONAME entry if there is one. Otherwise, it is the string
1361 passed to bfd_elf_set_dt_needed_name, or it is the filename. */
1364 bfd_elf_get_dt_soname (abfd
)
1367 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1368 && bfd_get_format (abfd
) == bfd_object
)
1369 return elf_dt_name (abfd
);
1373 /* Get the list of DT_NEEDED entries from a BFD. This is a hook for
1374 the ELF linker emulation code. */
1377 bfd_elf_get_bfd_needed_list (abfd
, pneeded
)
1379 struct bfd_link_needed_list
**pneeded
;
1382 bfd_byte
*dynbuf
= NULL
;
1384 unsigned long shlink
;
1385 bfd_byte
*extdyn
, *extdynend
;
1387 void (*swap_dyn_in
) PARAMS ((bfd
*, const PTR
, Elf_Internal_Dyn
*));
1391 if (bfd_get_flavour (abfd
) != bfd_target_elf_flavour
1392 || bfd_get_format (abfd
) != bfd_object
)
1395 s
= bfd_get_section_by_name (abfd
, ".dynamic");
1396 if (s
== NULL
|| s
->_raw_size
== 0)
1399 dynbuf
= (bfd_byte
*) bfd_malloc (s
->_raw_size
);
1403 if (! bfd_get_section_contents (abfd
, s
, (PTR
) dynbuf
, (file_ptr
) 0,
1407 elfsec
= _bfd_elf_section_from_bfd_section (abfd
, s
);
1411 shlink
= elf_elfsections (abfd
)[elfsec
]->sh_link
;
1413 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
1414 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
1417 extdynend
= extdyn
+ s
->_raw_size
;
1418 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
1420 Elf_Internal_Dyn dyn
;
1422 (*swap_dyn_in
) (abfd
, (PTR
) extdyn
, &dyn
);
1424 if (dyn
.d_tag
== DT_NULL
)
1427 if (dyn
.d_tag
== DT_NEEDED
)
1430 struct bfd_link_needed_list
*l
;
1431 unsigned int tagv
= dyn
.d_un
.d_val
;
1434 string
= bfd_elf_string_from_elf_section (abfd
, shlink
, tagv
);
1439 l
= (struct bfd_link_needed_list
*) bfd_alloc (abfd
, amt
);
1460 /* Allocate an ELF string table--force the first byte to be zero. */
1462 struct bfd_strtab_hash
*
1463 _bfd_elf_stringtab_init ()
1465 struct bfd_strtab_hash
*ret
;
1467 ret
= _bfd_stringtab_init ();
1472 loc
= _bfd_stringtab_add (ret
, "", true, false);
1473 BFD_ASSERT (loc
== 0 || loc
== (bfd_size_type
) -1);
1474 if (loc
== (bfd_size_type
) -1)
1476 _bfd_stringtab_free (ret
);
1483 /* ELF .o/exec file reading */
1485 /* Create a new bfd section from an ELF section header. */
1488 bfd_section_from_shdr (abfd
, shindex
)
1490 unsigned int shindex
;
1492 Elf_Internal_Shdr
*hdr
= elf_elfsections (abfd
)[shindex
];
1493 Elf_Internal_Ehdr
*ehdr
= elf_elfheader (abfd
);
1494 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1497 name
= elf_string_from_elf_strtab (abfd
, hdr
->sh_name
);
1499 switch (hdr
->sh_type
)
1502 /* Inactive section. Throw it away. */
1505 case SHT_PROGBITS
: /* Normal section with contents. */
1506 case SHT_DYNAMIC
: /* Dynamic linking information. */
1507 case SHT_NOBITS
: /* .bss section. */
1508 case SHT_HASH
: /* .hash section. */
1509 case SHT_NOTE
: /* .note section. */
1510 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1512 case SHT_SYMTAB
: /* A symbol table */
1513 if (elf_onesymtab (abfd
) == shindex
)
1516 BFD_ASSERT (hdr
->sh_entsize
== bed
->s
->sizeof_sym
);
1517 BFD_ASSERT (elf_onesymtab (abfd
) == 0);
1518 elf_onesymtab (abfd
) = shindex
;
1519 elf_tdata (abfd
)->symtab_hdr
= *hdr
;
1520 elf_elfsections (abfd
)[shindex
] = hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1521 abfd
->flags
|= HAS_SYMS
;
1523 /* Sometimes a shared object will map in the symbol table. If
1524 SHF_ALLOC is set, and this is a shared object, then we also
1525 treat this section as a BFD section. We can not base the
1526 decision purely on SHF_ALLOC, because that flag is sometimes
1527 set in a relocateable object file, which would confuse the
1529 if ((hdr
->sh_flags
& SHF_ALLOC
) != 0
1530 && (abfd
->flags
& DYNAMIC
) != 0
1531 && ! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
))
1536 case SHT_DYNSYM
: /* A dynamic symbol table */
1537 if (elf_dynsymtab (abfd
) == shindex
)
1540 BFD_ASSERT (hdr
->sh_entsize
== bed
->s
->sizeof_sym
);
1541 BFD_ASSERT (elf_dynsymtab (abfd
) == 0);
1542 elf_dynsymtab (abfd
) = shindex
;
1543 elf_tdata (abfd
)->dynsymtab_hdr
= *hdr
;
1544 elf_elfsections (abfd
)[shindex
] = hdr
= &elf_tdata (abfd
)->dynsymtab_hdr
;
1545 abfd
->flags
|= HAS_SYMS
;
1547 /* Besides being a symbol table, we also treat this as a regular
1548 section, so that objcopy can handle it. */
1549 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1551 case SHT_STRTAB
: /* A string table */
1552 if (hdr
->bfd_section
!= NULL
)
1554 if (ehdr
->e_shstrndx
== shindex
)
1556 elf_tdata (abfd
)->shstrtab_hdr
= *hdr
;
1557 elf_elfsections (abfd
)[shindex
] = &elf_tdata (abfd
)->shstrtab_hdr
;
1563 for (i
= 1; i
< ehdr
->e_shnum
; i
++)
1565 Elf_Internal_Shdr
*hdr2
= elf_elfsections (abfd
)[i
];
1566 if (hdr2
->sh_link
== shindex
)
1568 if (! bfd_section_from_shdr (abfd
, i
))
1570 if (elf_onesymtab (abfd
) == i
)
1572 elf_tdata (abfd
)->strtab_hdr
= *hdr
;
1573 elf_elfsections (abfd
)[shindex
] =
1574 &elf_tdata (abfd
)->strtab_hdr
;
1577 if (elf_dynsymtab (abfd
) == i
)
1579 elf_tdata (abfd
)->dynstrtab_hdr
= *hdr
;
1580 elf_elfsections (abfd
)[shindex
] = hdr
=
1581 &elf_tdata (abfd
)->dynstrtab_hdr
;
1582 /* We also treat this as a regular section, so
1583 that objcopy can handle it. */
1586 #if 0 /* Not handling other string tables specially right now. */
1587 hdr2
= elf_elfsections (abfd
)[i
]; /* in case it moved */
1588 /* We have a strtab for some random other section. */
1589 newsect
= (asection
*) hdr2
->bfd_section
;
1592 hdr
->bfd_section
= newsect
;
1593 hdr2
= &elf_section_data (newsect
)->str_hdr
;
1595 elf_elfsections (abfd
)[shindex
] = hdr2
;
1601 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1605 /* *These* do a lot of work -- but build no sections! */
1607 asection
*target_sect
;
1608 Elf_Internal_Shdr
*hdr2
;
1610 /* Check for a bogus link to avoid crashing. */
1611 if (hdr
->sh_link
>= ehdr
->e_shnum
)
1613 ((*_bfd_error_handler
)
1614 (_("%s: invalid link %lu for reloc section %s (index %u)"),
1615 bfd_archive_filename (abfd
), hdr
->sh_link
, name
, shindex
));
1616 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1619 /* For some incomprehensible reason Oracle distributes
1620 libraries for Solaris in which some of the objects have
1621 bogus sh_link fields. It would be nice if we could just
1622 reject them, but, unfortunately, some people need to use
1623 them. We scan through the section headers; if we find only
1624 one suitable symbol table, we clobber the sh_link to point
1625 to it. I hope this doesn't break anything. */
1626 if (elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
!= SHT_SYMTAB
1627 && elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
!= SHT_DYNSYM
)
1633 for (scan
= 1; scan
< ehdr
->e_shnum
; scan
++)
1635 if (elf_elfsections (abfd
)[scan
]->sh_type
== SHT_SYMTAB
1636 || elf_elfsections (abfd
)[scan
]->sh_type
== SHT_DYNSYM
)
1647 hdr
->sh_link
= found
;
1650 /* Get the symbol table. */
1651 if (elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
== SHT_SYMTAB
1652 && ! bfd_section_from_shdr (abfd
, hdr
->sh_link
))
1655 /* If this reloc section does not use the main symbol table we
1656 don't treat it as a reloc section. BFD can't adequately
1657 represent such a section, so at least for now, we don't
1658 try. We just present it as a normal section. We also
1659 can't use it as a reloc section if it points to the null
1661 if (hdr
->sh_link
!= elf_onesymtab (abfd
) || hdr
->sh_info
== SHN_UNDEF
)
1662 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1664 if (! bfd_section_from_shdr (abfd
, hdr
->sh_info
))
1666 target_sect
= bfd_section_from_elf_index (abfd
, hdr
->sh_info
);
1667 if (target_sect
== NULL
)
1670 if ((target_sect
->flags
& SEC_RELOC
) == 0
1671 || target_sect
->reloc_count
== 0)
1672 hdr2
= &elf_section_data (target_sect
)->rel_hdr
;
1676 BFD_ASSERT (elf_section_data (target_sect
)->rel_hdr2
== NULL
);
1677 amt
= sizeof (*hdr2
);
1678 hdr2
= (Elf_Internal_Shdr
*) bfd_alloc (abfd
, amt
);
1679 elf_section_data (target_sect
)->rel_hdr2
= hdr2
;
1682 elf_elfsections (abfd
)[shindex
] = hdr2
;
1683 target_sect
->reloc_count
+= NUM_SHDR_ENTRIES (hdr
);
1684 target_sect
->flags
|= SEC_RELOC
;
1685 target_sect
->relocation
= NULL
;
1686 target_sect
->rel_filepos
= hdr
->sh_offset
;
1687 /* In the section to which the relocations apply, mark whether
1688 its relocations are of the REL or RELA variety. */
1689 if (hdr
->sh_size
!= 0)
1690 elf_section_data (target_sect
)->use_rela_p
1691 = (hdr
->sh_type
== SHT_RELA
);
1692 abfd
->flags
|= HAS_RELOC
;
1697 case SHT_GNU_verdef
:
1698 elf_dynverdef (abfd
) = shindex
;
1699 elf_tdata (abfd
)->dynverdef_hdr
= *hdr
;
1700 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1703 case SHT_GNU_versym
:
1704 elf_dynversym (abfd
) = shindex
;
1705 elf_tdata (abfd
)->dynversym_hdr
= *hdr
;
1706 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1709 case SHT_GNU_verneed
:
1710 elf_dynverref (abfd
) = shindex
;
1711 elf_tdata (abfd
)->dynverref_hdr
= *hdr
;
1712 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1719 /* Make a section for objcopy and relocatable links. */
1720 if (!_bfd_elf_make_section_from_shdr (abfd
, hdr
, name
))
1722 if (hdr
->contents
!= NULL
)
1724 Elf_Internal_Group
*idx
= (Elf_Internal_Group
*) hdr
->contents
;
1725 unsigned int n_elt
= hdr
->sh_size
/ 4;
1728 while (--n_elt
!= 0)
1729 if ((s
= (++idx
)->shdr
->bfd_section
) != NULL
1730 && elf_next_in_group (s
) != NULL
)
1732 elf_next_in_group (hdr
->bfd_section
) = s
;
1739 /* Check for any processor-specific section types. */
1741 if (bed
->elf_backend_section_from_shdr
)
1742 (*bed
->elf_backend_section_from_shdr
) (abfd
, hdr
, name
);
1750 /* Given an ELF section number, retrieve the corresponding BFD
1754 bfd_section_from_elf_index (abfd
, index
)
1758 BFD_ASSERT (index
> 0 && index
< SHN_LORESERVE
);
1759 if (index
>= elf_elfheader (abfd
)->e_shnum
)
1761 return elf_elfsections (abfd
)[index
]->bfd_section
;
1765 _bfd_elf_new_section_hook (abfd
, sec
)
1769 struct bfd_elf_section_data
*sdata
;
1770 bfd_size_type amt
= sizeof (*sdata
);
1772 sdata
= (struct bfd_elf_section_data
*) bfd_zalloc (abfd
, amt
);
1775 sec
->used_by_bfd
= (PTR
) sdata
;
1777 /* Indicate whether or not this section should use RELA relocations. */
1779 = get_elf_backend_data (abfd
)->default_use_rela_p
;
1784 /* Create a new bfd section from an ELF program header.
1786 Since program segments have no names, we generate a synthetic name
1787 of the form segment<NUM>, where NUM is generally the index in the
1788 program header table. For segments that are split (see below) we
1789 generate the names segment<NUM>a and segment<NUM>b.
1791 Note that some program segments may have a file size that is different than
1792 (less than) the memory size. All this means is that at execution the
1793 system must allocate the amount of memory specified by the memory size,
1794 but only initialize it with the first "file size" bytes read from the
1795 file. This would occur for example, with program segments consisting
1796 of combined data+bss.
1798 To handle the above situation, this routine generates TWO bfd sections
1799 for the single program segment. The first has the length specified by
1800 the file size of the segment, and the second has the length specified
1801 by the difference between the two sizes. In effect, the segment is split
1802 into it's initialized and uninitialized parts.
1807 _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, typename
)
1809 Elf_Internal_Phdr
*hdr
;
1811 const char *typename
;
1818 split
= ((hdr
->p_memsz
> 0)
1819 && (hdr
->p_filesz
> 0)
1820 && (hdr
->p_memsz
> hdr
->p_filesz
));
1821 sprintf (namebuf
, "%s%d%s", typename
, index
, split
? "a" : "");
1822 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (namebuf
) + 1);
1825 strcpy (name
, namebuf
);
1826 newsect
= bfd_make_section (abfd
, name
);
1827 if (newsect
== NULL
)
1829 newsect
->vma
= hdr
->p_vaddr
;
1830 newsect
->lma
= hdr
->p_paddr
;
1831 newsect
->_raw_size
= hdr
->p_filesz
;
1832 newsect
->filepos
= hdr
->p_offset
;
1833 newsect
->flags
|= SEC_HAS_CONTENTS
;
1834 if (hdr
->p_type
== PT_LOAD
)
1836 newsect
->flags
|= SEC_ALLOC
;
1837 newsect
->flags
|= SEC_LOAD
;
1838 if (hdr
->p_flags
& PF_X
)
1840 /* FIXME: all we known is that it has execute PERMISSION,
1842 newsect
->flags
|= SEC_CODE
;
1845 if (!(hdr
->p_flags
& PF_W
))
1847 newsect
->flags
|= SEC_READONLY
;
1852 sprintf (namebuf
, "%s%db", typename
, index
);
1853 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (namebuf
) + 1);
1856 strcpy (name
, namebuf
);
1857 newsect
= bfd_make_section (abfd
, name
);
1858 if (newsect
== NULL
)
1860 newsect
->vma
= hdr
->p_vaddr
+ hdr
->p_filesz
;
1861 newsect
->lma
= hdr
->p_paddr
+ hdr
->p_filesz
;
1862 newsect
->_raw_size
= hdr
->p_memsz
- hdr
->p_filesz
;
1863 if (hdr
->p_type
== PT_LOAD
)
1865 newsect
->flags
|= SEC_ALLOC
;
1866 if (hdr
->p_flags
& PF_X
)
1867 newsect
->flags
|= SEC_CODE
;
1869 if (!(hdr
->p_flags
& PF_W
))
1870 newsect
->flags
|= SEC_READONLY
;
1877 bfd_section_from_phdr (abfd
, hdr
, index
)
1879 Elf_Internal_Phdr
*hdr
;
1882 struct elf_backend_data
*bed
;
1884 switch (hdr
->p_type
)
1887 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "null");
1890 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "load");
1893 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "dynamic");
1896 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "interp");
1899 if (! _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "note"))
1901 if (! elfcore_read_notes (abfd
, (file_ptr
) hdr
->p_offset
, hdr
->p_filesz
))
1906 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "shlib");
1909 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "phdr");
1912 /* Check for any processor-specific program segment types.
1913 If no handler for them, default to making "segment" sections. */
1914 bed
= get_elf_backend_data (abfd
);
1915 if (bed
->elf_backend_section_from_phdr
)
1916 return (*bed
->elf_backend_section_from_phdr
) (abfd
, hdr
, index
);
1918 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "segment");
1922 /* Initialize REL_HDR, the section-header for new section, containing
1923 relocations against ASECT. If USE_RELA_P is true, we use RELA
1924 relocations; otherwise, we use REL relocations. */
1927 _bfd_elf_init_reloc_shdr (abfd
, rel_hdr
, asect
, use_rela_p
)
1929 Elf_Internal_Shdr
*rel_hdr
;
1934 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1935 bfd_size_type amt
= sizeof ".rela" + strlen (asect
->name
);
1937 name
= bfd_alloc (abfd
, amt
);
1940 sprintf (name
, "%s%s", use_rela_p
? ".rela" : ".rel", asect
->name
);
1942 (unsigned int) _bfd_stringtab_add (elf_shstrtab (abfd
), name
,
1944 if (rel_hdr
->sh_name
== (unsigned int) -1)
1946 rel_hdr
->sh_type
= use_rela_p
? SHT_RELA
: SHT_REL
;
1947 rel_hdr
->sh_entsize
= (use_rela_p
1948 ? bed
->s
->sizeof_rela
1949 : bed
->s
->sizeof_rel
);
1950 rel_hdr
->sh_addralign
= bed
->s
->file_align
;
1951 rel_hdr
->sh_flags
= 0;
1952 rel_hdr
->sh_addr
= 0;
1953 rel_hdr
->sh_size
= 0;
1954 rel_hdr
->sh_offset
= 0;
1959 /* Set up an ELF internal section header for a section. */
1962 elf_fake_sections (abfd
, asect
, failedptrarg
)
1967 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1968 boolean
*failedptr
= (boolean
*) failedptrarg
;
1969 Elf_Internal_Shdr
*this_hdr
;
1973 /* We already failed; just get out of the bfd_map_over_sections
1978 this_hdr
= &elf_section_data (asect
)->this_hdr
;
1980 this_hdr
->sh_name
= (unsigned long) _bfd_stringtab_add (elf_shstrtab (abfd
),
1983 if (this_hdr
->sh_name
== (unsigned long) -1)
1989 this_hdr
->sh_flags
= 0;
1991 if ((asect
->flags
& SEC_ALLOC
) != 0
1992 || asect
->user_set_vma
)
1993 this_hdr
->sh_addr
= asect
->vma
;
1995 this_hdr
->sh_addr
= 0;
1997 this_hdr
->sh_offset
= 0;
1998 this_hdr
->sh_size
= asect
->_raw_size
;
1999 this_hdr
->sh_link
= 0;
2000 this_hdr
->sh_addralign
= 1 << asect
->alignment_power
;
2001 /* The sh_entsize and sh_info fields may have been set already by
2002 copy_private_section_data. */
2004 this_hdr
->bfd_section
= asect
;
2005 this_hdr
->contents
= NULL
;
2007 /* FIXME: This should not be based on section names. */
2008 if (strcmp (asect
->name
, ".dynstr") == 0)
2009 this_hdr
->sh_type
= SHT_STRTAB
;
2010 else if (strcmp (asect
->name
, ".hash") == 0)
2012 this_hdr
->sh_type
= SHT_HASH
;
2013 this_hdr
->sh_entsize
= bed
->s
->sizeof_hash_entry
;
2015 else if (strcmp (asect
->name
, ".dynsym") == 0)
2017 this_hdr
->sh_type
= SHT_DYNSYM
;
2018 this_hdr
->sh_entsize
= bed
->s
->sizeof_sym
;
2020 else if (strcmp (asect
->name
, ".dynamic") == 0)
2022 this_hdr
->sh_type
= SHT_DYNAMIC
;
2023 this_hdr
->sh_entsize
= bed
->s
->sizeof_dyn
;
2025 else if (strncmp (asect
->name
, ".rela", 5) == 0
2026 && get_elf_backend_data (abfd
)->may_use_rela_p
)
2028 this_hdr
->sh_type
= SHT_RELA
;
2029 this_hdr
->sh_entsize
= bed
->s
->sizeof_rela
;
2031 else if (strncmp (asect
->name
, ".rel", 4) == 0
2032 && get_elf_backend_data (abfd
)->may_use_rel_p
)
2034 this_hdr
->sh_type
= SHT_REL
;
2035 this_hdr
->sh_entsize
= bed
->s
->sizeof_rel
;
2037 else if (strncmp (asect
->name
, ".note", 5) == 0)
2038 this_hdr
->sh_type
= SHT_NOTE
;
2039 else if (strncmp (asect
->name
, ".stab", 5) == 0
2040 && strcmp (asect
->name
+ strlen (asect
->name
) - 3, "str") == 0)
2041 this_hdr
->sh_type
= SHT_STRTAB
;
2042 else if (strcmp (asect
->name
, ".gnu.version") == 0)
2044 this_hdr
->sh_type
= SHT_GNU_versym
;
2045 this_hdr
->sh_entsize
= sizeof (Elf_External_Versym
);
2047 else if (strcmp (asect
->name
, ".gnu.version_d") == 0)
2049 this_hdr
->sh_type
= SHT_GNU_verdef
;
2050 this_hdr
->sh_entsize
= 0;
2051 /* objcopy or strip will copy over sh_info, but may not set
2052 cverdefs. The linker will set cverdefs, but sh_info will be
2054 if (this_hdr
->sh_info
== 0)
2055 this_hdr
->sh_info
= elf_tdata (abfd
)->cverdefs
;
2057 BFD_ASSERT (elf_tdata (abfd
)->cverdefs
== 0
2058 || this_hdr
->sh_info
== elf_tdata (abfd
)->cverdefs
);
2060 else if (strcmp (asect
->name
, ".gnu.version_r") == 0)
2062 this_hdr
->sh_type
= SHT_GNU_verneed
;
2063 this_hdr
->sh_entsize
= 0;
2064 /* objcopy or strip will copy over sh_info, but may not set
2065 cverrefs. The linker will set cverrefs, but sh_info will be
2067 if (this_hdr
->sh_info
== 0)
2068 this_hdr
->sh_info
= elf_tdata (abfd
)->cverrefs
;
2070 BFD_ASSERT (elf_tdata (abfd
)->cverrefs
== 0
2071 || this_hdr
->sh_info
== elf_tdata (abfd
)->cverrefs
);
2073 else if ((asect
->flags
& SEC_GROUP
) != 0)
2075 this_hdr
->sh_type
= SHT_GROUP
;
2076 this_hdr
->sh_entsize
= 4;
2078 else if ((asect
->flags
& SEC_ALLOC
) != 0
2079 && ((asect
->flags
& (SEC_LOAD
| SEC_HAS_CONTENTS
)) == 0))
2080 this_hdr
->sh_type
= SHT_NOBITS
;
2082 this_hdr
->sh_type
= SHT_PROGBITS
;
2084 if ((asect
->flags
& SEC_ALLOC
) != 0)
2085 this_hdr
->sh_flags
|= SHF_ALLOC
;
2086 if ((asect
->flags
& SEC_READONLY
) == 0)
2087 this_hdr
->sh_flags
|= SHF_WRITE
;
2088 if ((asect
->flags
& SEC_CODE
) != 0)
2089 this_hdr
->sh_flags
|= SHF_EXECINSTR
;
2090 if ((asect
->flags
& SEC_MERGE
) != 0)
2092 this_hdr
->sh_flags
|= SHF_MERGE
;
2093 this_hdr
->sh_entsize
= asect
->entsize
;
2094 if ((asect
->flags
& SEC_STRINGS
) != 0)
2095 this_hdr
->sh_flags
|= SHF_STRINGS
;
2097 if (elf_group_name (asect
) != NULL
)
2098 this_hdr
->sh_flags
|= SHF_GROUP
;
2100 /* Check for processor-specific section types. */
2101 if (bed
->elf_backend_fake_sections
)
2102 (*bed
->elf_backend_fake_sections
) (abfd
, this_hdr
, asect
);
2104 /* If the section has relocs, set up a section header for the
2105 SHT_REL[A] section. If two relocation sections are required for
2106 this section, it is up to the processor-specific back-end to
2107 create the other. */
2108 if ((asect
->flags
& SEC_RELOC
) != 0
2109 && !_bfd_elf_init_reloc_shdr (abfd
,
2110 &elf_section_data (asect
)->rel_hdr
,
2112 elf_section_data (asect
)->use_rela_p
))
2116 /* Fill in the contents of a SHT_GROUP section. */
2119 set_group_contents (abfd
, sec
, failedptrarg
)
2122 PTR failedptrarg ATTRIBUTE_UNUSED
;
2124 boolean
*failedptr
= (boolean
*) failedptrarg
;
2125 unsigned long symindx
;
2128 struct bfd_link_order
*l
;
2130 if (elf_section_data (sec
)->this_hdr
.sh_type
!= SHT_GROUP
2134 /* If called from the assembler, swap_out_syms will have set up
2135 elf_section_syms; If called for "ld -r", the symbols won't yet
2136 be mapped, so emulate elf_bfd_final_link. */
2137 if (elf_section_syms (abfd
) != NULL
)
2138 symindx
= elf_section_syms (abfd
)[sec
->index
]->udata
.i
;
2140 symindx
= elf_section_data (sec
)->this_idx
;
2141 elf_section_data (sec
)->this_hdr
.sh_info
= symindx
;
2143 /* Nor will the contents be allocated for "ld -r". */
2144 if (sec
->contents
== NULL
)
2146 sec
->contents
= bfd_alloc (abfd
, sec
->_raw_size
);
2147 if (sec
->contents
== NULL
)
2154 loc
= sec
->contents
+ sec
->_raw_size
;
2156 /* Get the pointer to the first section in the group that we
2157 squirreled away here. */
2158 elt
= elf_next_in_group (sec
);
2160 /* First element is a flag word. Rest of section is elf section
2161 indices for all the sections of the group. Write them backwards
2162 just to keep the group in the same order as given in .section
2163 directives, not that it matters. */
2167 H_PUT_32 (abfd
, elf_section_data (elt
)->this_idx
, loc
);
2168 elt
= elf_next_in_group (elt
);
2171 /* If this is a relocatable link, then the above did nothing because
2172 SEC is the output section. Look through the input sections
2174 for (l
= sec
->link_order_head
; l
!= NULL
; l
= l
->next
)
2175 if (l
->type
== bfd_indirect_link_order
2176 && (elt
= elf_next_in_group (l
->u
.indirect
.section
)) != NULL
)
2181 elf_section_data (elt
->output_section
)->this_idx
, loc
);
2182 elt
= elf_next_in_group (elt
);
2183 /* During a relocatable link, the lists are circular. */
2185 while (elt
!= elf_next_in_group (l
->u
.indirect
.section
));
2188 H_PUT_32 (abfd
, 0, loc
);
2190 BFD_ASSERT (loc
== sec
->contents
);
2193 /* Assign all ELF section numbers. The dummy first section is handled here
2194 too. The link/info pointers for the standard section types are filled
2195 in here too, while we're at it. */
2198 assign_section_numbers (abfd
)
2201 struct elf_obj_tdata
*t
= elf_tdata (abfd
);
2203 unsigned int section_number
;
2204 Elf_Internal_Shdr
**i_shdrp
;
2209 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
2211 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
2213 d
->this_idx
= section_number
++;
2214 if ((sec
->flags
& SEC_RELOC
) == 0)
2217 d
->rel_idx
= section_number
++;
2220 d
->rel_idx2
= section_number
++;
2225 t
->shstrtab_section
= section_number
++;
2226 elf_elfheader (abfd
)->e_shstrndx
= t
->shstrtab_section
;
2227 t
->shstrtab_hdr
.sh_size
= _bfd_stringtab_size (elf_shstrtab (abfd
));
2229 if (bfd_get_symcount (abfd
) > 0)
2231 t
->symtab_section
= section_number
++;
2232 t
->strtab_section
= section_number
++;
2235 elf_elfheader (abfd
)->e_shnum
= section_number
;
2237 /* Set up the list of section header pointers, in agreement with the
2239 amt
= section_number
* sizeof (Elf_Internal_Shdr
*);
2240 i_shdrp
= (Elf_Internal_Shdr
**) bfd_alloc (abfd
, amt
);
2241 if (i_shdrp
== NULL
)
2244 amt
= sizeof (Elf_Internal_Shdr
);
2245 i_shdrp
[0] = (Elf_Internal_Shdr
*) bfd_alloc (abfd
, amt
);
2246 if (i_shdrp
[0] == NULL
)
2248 bfd_release (abfd
, i_shdrp
);
2251 memset (i_shdrp
[0], 0, sizeof (Elf_Internal_Shdr
));
2253 elf_elfsections (abfd
) = i_shdrp
;
2255 i_shdrp
[t
->shstrtab_section
] = &t
->shstrtab_hdr
;
2256 if (bfd_get_symcount (abfd
) > 0)
2258 i_shdrp
[t
->symtab_section
] = &t
->symtab_hdr
;
2259 i_shdrp
[t
->strtab_section
] = &t
->strtab_hdr
;
2260 t
->symtab_hdr
.sh_link
= t
->strtab_section
;
2262 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
2264 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
2268 i_shdrp
[d
->this_idx
] = &d
->this_hdr
;
2269 if (d
->rel_idx
!= 0)
2270 i_shdrp
[d
->rel_idx
] = &d
->rel_hdr
;
2271 if (d
->rel_idx2
!= 0)
2272 i_shdrp
[d
->rel_idx2
] = d
->rel_hdr2
;
2274 /* Fill in the sh_link and sh_info fields while we're at it. */
2276 /* sh_link of a reloc section is the section index of the symbol
2277 table. sh_info is the section index of the section to which
2278 the relocation entries apply. */
2279 if (d
->rel_idx
!= 0)
2281 d
->rel_hdr
.sh_link
= t
->symtab_section
;
2282 d
->rel_hdr
.sh_info
= d
->this_idx
;
2284 if (d
->rel_idx2
!= 0)
2286 d
->rel_hdr2
->sh_link
= t
->symtab_section
;
2287 d
->rel_hdr2
->sh_info
= d
->this_idx
;
2290 switch (d
->this_hdr
.sh_type
)
2294 /* A reloc section which we are treating as a normal BFD
2295 section. sh_link is the section index of the symbol
2296 table. sh_info is the section index of the section to
2297 which the relocation entries apply. We assume that an
2298 allocated reloc section uses the dynamic symbol table.
2299 FIXME: How can we be sure? */
2300 s
= bfd_get_section_by_name (abfd
, ".dynsym");
2302 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
2304 /* We look up the section the relocs apply to by name. */
2306 if (d
->this_hdr
.sh_type
== SHT_REL
)
2310 s
= bfd_get_section_by_name (abfd
, name
);
2312 d
->this_hdr
.sh_info
= elf_section_data (s
)->this_idx
;
2316 /* We assume that a section named .stab*str is a stabs
2317 string section. We look for a section with the same name
2318 but without the trailing ``str'', and set its sh_link
2319 field to point to this section. */
2320 if (strncmp (sec
->name
, ".stab", sizeof ".stab" - 1) == 0
2321 && strcmp (sec
->name
+ strlen (sec
->name
) - 3, "str") == 0)
2326 len
= strlen (sec
->name
);
2327 alc
= (char *) bfd_malloc ((bfd_size_type
) len
- 2);
2330 strncpy (alc
, sec
->name
, len
- 3);
2331 alc
[len
- 3] = '\0';
2332 s
= bfd_get_section_by_name (abfd
, alc
);
2336 elf_section_data (s
)->this_hdr
.sh_link
= d
->this_idx
;
2338 /* This is a .stab section. */
2339 elf_section_data (s
)->this_hdr
.sh_entsize
=
2340 4 + 2 * bfd_get_arch_size (abfd
) / 8;
2347 case SHT_GNU_verneed
:
2348 case SHT_GNU_verdef
:
2349 /* sh_link is the section header index of the string table
2350 used for the dynamic entries, or the symbol table, or the
2352 s
= bfd_get_section_by_name (abfd
, ".dynstr");
2354 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
2358 case SHT_GNU_versym
:
2359 /* sh_link is the section header index of the symbol table
2360 this hash table or version table is for. */
2361 s
= bfd_get_section_by_name (abfd
, ".dynsym");
2363 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
2367 d
->this_hdr
.sh_link
= t
->symtab_section
;
2374 /* Map symbol from it's internal number to the external number, moving
2375 all local symbols to be at the head of the list. */
2378 sym_is_global (abfd
, sym
)
2382 /* If the backend has a special mapping, use it. */
2383 if (get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
2384 return ((*get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
2387 return ((sym
->flags
& (BSF_GLOBAL
| BSF_WEAK
)) != 0
2388 || bfd_is_und_section (bfd_get_section (sym
))
2389 || bfd_is_com_section (bfd_get_section (sym
)));
2393 elf_map_symbols (abfd
)
2396 unsigned int symcount
= bfd_get_symcount (abfd
);
2397 asymbol
**syms
= bfd_get_outsymbols (abfd
);
2398 asymbol
**sect_syms
;
2399 unsigned int num_locals
= 0;
2400 unsigned int num_globals
= 0;
2401 unsigned int num_locals2
= 0;
2402 unsigned int num_globals2
= 0;
2410 fprintf (stderr
, "elf_map_symbols\n");
2414 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2416 if (max_index
< asect
->index
)
2417 max_index
= asect
->index
;
2421 amt
= max_index
* sizeof (asymbol
*);
2422 sect_syms
= (asymbol
**) bfd_zalloc (abfd
, amt
);
2423 if (sect_syms
== NULL
)
2425 elf_section_syms (abfd
) = sect_syms
;
2426 elf_num_section_syms (abfd
) = max_index
;
2428 /* Init sect_syms entries for any section symbols we have already
2429 decided to output. */
2430 for (idx
= 0; idx
< symcount
; idx
++)
2432 asymbol
*sym
= syms
[idx
];
2434 if ((sym
->flags
& BSF_SECTION_SYM
) != 0
2441 if (sec
->owner
!= NULL
)
2443 if (sec
->owner
!= abfd
)
2445 if (sec
->output_offset
!= 0)
2448 sec
= sec
->output_section
;
2450 /* Empty sections in the input files may have had a
2451 section symbol created for them. (See the comment
2452 near the end of _bfd_generic_link_output_symbols in
2453 linker.c). If the linker script discards such
2454 sections then we will reach this point. Since we know
2455 that we cannot avoid this case, we detect it and skip
2456 the abort and the assignment to the sect_syms array.
2457 To reproduce this particular case try running the
2458 linker testsuite test ld-scripts/weak.exp for an ELF
2459 port that uses the generic linker. */
2460 if (sec
->owner
== NULL
)
2463 BFD_ASSERT (sec
->owner
== abfd
);
2465 sect_syms
[sec
->index
] = syms
[idx
];
2470 /* Classify all of the symbols. */
2471 for (idx
= 0; idx
< symcount
; idx
++)
2473 if (!sym_is_global (abfd
, syms
[idx
]))
2479 /* We will be adding a section symbol for each BFD section. Most normal
2480 sections will already have a section symbol in outsymbols, but
2481 eg. SHT_GROUP sections will not, and we need the section symbol mapped
2482 at least in that case. */
2483 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2485 if (sect_syms
[asect
->index
] == NULL
)
2487 if (!sym_is_global (abfd
, asect
->symbol
))
2494 /* Now sort the symbols so the local symbols are first. */
2495 amt
= (num_locals
+ num_globals
) * sizeof (asymbol
*);
2496 new_syms
= (asymbol
**) bfd_alloc (abfd
, amt
);
2498 if (new_syms
== NULL
)
2501 for (idx
= 0; idx
< symcount
; idx
++)
2503 asymbol
*sym
= syms
[idx
];
2506 if (!sym_is_global (abfd
, sym
))
2509 i
= num_locals
+ num_globals2
++;
2511 sym
->udata
.i
= i
+ 1;
2513 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2515 if (sect_syms
[asect
->index
] == NULL
)
2517 asymbol
*sym
= asect
->symbol
;
2520 sect_syms
[asect
->index
] = sym
;
2521 if (!sym_is_global (abfd
, sym
))
2524 i
= num_locals
+ num_globals2
++;
2526 sym
->udata
.i
= i
+ 1;
2530 bfd_set_symtab (abfd
, new_syms
, num_locals
+ num_globals
);
2532 elf_num_locals (abfd
) = num_locals
;
2533 elf_num_globals (abfd
) = num_globals
;
2537 /* Align to the maximum file alignment that could be required for any
2538 ELF data structure. */
2540 static INLINE file_ptr align_file_position
PARAMS ((file_ptr
, int));
2541 static INLINE file_ptr
2542 align_file_position (off
, align
)
2546 return (off
+ align
- 1) & ~(align
- 1);
2549 /* Assign a file position to a section, optionally aligning to the
2550 required section alignment. */
2553 _bfd_elf_assign_file_position_for_section (i_shdrp
, offset
, align
)
2554 Elf_Internal_Shdr
*i_shdrp
;
2562 al
= i_shdrp
->sh_addralign
;
2564 offset
= BFD_ALIGN (offset
, al
);
2566 i_shdrp
->sh_offset
= offset
;
2567 if (i_shdrp
->bfd_section
!= NULL
)
2568 i_shdrp
->bfd_section
->filepos
= offset
;
2569 if (i_shdrp
->sh_type
!= SHT_NOBITS
)
2570 offset
+= i_shdrp
->sh_size
;
2574 /* Compute the file positions we are going to put the sections at, and
2575 otherwise prepare to begin writing out the ELF file. If LINK_INFO
2576 is not NULL, this is being called by the ELF backend linker. */
2579 _bfd_elf_compute_section_file_positions (abfd
, link_info
)
2581 struct bfd_link_info
*link_info
;
2583 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2585 struct bfd_strtab_hash
*strtab
;
2586 Elf_Internal_Shdr
*shstrtab_hdr
;
2588 if (abfd
->output_has_begun
)
2591 /* Do any elf backend specific processing first. */
2592 if (bed
->elf_backend_begin_write_processing
)
2593 (*bed
->elf_backend_begin_write_processing
) (abfd
, link_info
);
2595 if (! prep_headers (abfd
))
2598 /* Post process the headers if necessary. */
2599 if (bed
->elf_backend_post_process_headers
)
2600 (*bed
->elf_backend_post_process_headers
) (abfd
, link_info
);
2603 bfd_map_over_sections (abfd
, elf_fake_sections
, &failed
);
2607 if (!assign_section_numbers (abfd
))
2610 /* The backend linker builds symbol table information itself. */
2611 if (link_info
== NULL
&& bfd_get_symcount (abfd
) > 0)
2613 /* Non-zero if doing a relocatable link. */
2614 int relocatable_p
= ! (abfd
->flags
& (EXEC_P
| DYNAMIC
));
2616 if (! swap_out_syms (abfd
, &strtab
, relocatable_p
))
2620 if (link_info
== NULL
|| link_info
->relocateable
)
2622 bfd_map_over_sections (abfd
, set_group_contents
, &failed
);
2627 shstrtab_hdr
= &elf_tdata (abfd
)->shstrtab_hdr
;
2628 /* sh_name was set in prep_headers. */
2629 shstrtab_hdr
->sh_type
= SHT_STRTAB
;
2630 shstrtab_hdr
->sh_flags
= 0;
2631 shstrtab_hdr
->sh_addr
= 0;
2632 shstrtab_hdr
->sh_size
= _bfd_stringtab_size (elf_shstrtab (abfd
));
2633 shstrtab_hdr
->sh_entsize
= 0;
2634 shstrtab_hdr
->sh_link
= 0;
2635 shstrtab_hdr
->sh_info
= 0;
2636 /* sh_offset is set in assign_file_positions_except_relocs. */
2637 shstrtab_hdr
->sh_addralign
= 1;
2639 if (!assign_file_positions_except_relocs (abfd
))
2642 if (link_info
== NULL
&& bfd_get_symcount (abfd
) > 0)
2645 Elf_Internal_Shdr
*hdr
;
2647 off
= elf_tdata (abfd
)->next_file_pos
;
2649 hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2650 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
2652 hdr
= &elf_tdata (abfd
)->strtab_hdr
;
2653 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
2655 elf_tdata (abfd
)->next_file_pos
= off
;
2657 /* Now that we know where the .strtab section goes, write it
2659 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
2660 || ! _bfd_stringtab_emit (abfd
, strtab
))
2662 _bfd_stringtab_free (strtab
);
2665 abfd
->output_has_begun
= true;
2670 /* Create a mapping from a set of sections to a program segment. */
2672 static INLINE
struct elf_segment_map
*
2673 make_mapping (abfd
, sections
, from
, to
, phdr
)
2675 asection
**sections
;
2680 struct elf_segment_map
*m
;
2685 amt
= sizeof (struct elf_segment_map
);
2686 amt
+= (to
- from
- 1) * sizeof (asection
*);
2687 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2691 m
->p_type
= PT_LOAD
;
2692 for (i
= from
, hdrpp
= sections
+ from
; i
< to
; i
++, hdrpp
++)
2693 m
->sections
[i
- from
] = *hdrpp
;
2694 m
->count
= to
- from
;
2696 if (from
== 0 && phdr
)
2698 /* Include the headers in the first PT_LOAD segment. */
2699 m
->includes_filehdr
= 1;
2700 m
->includes_phdrs
= 1;
2706 /* Set up a mapping from BFD sections to program segments. */
2709 map_sections_to_segments (abfd
)
2712 asection
**sections
= NULL
;
2716 struct elf_segment_map
*mfirst
;
2717 struct elf_segment_map
**pm
;
2718 struct elf_segment_map
*m
;
2720 unsigned int phdr_index
;
2721 bfd_vma maxpagesize
;
2723 boolean phdr_in_segment
= true;
2728 if (elf_tdata (abfd
)->segment_map
!= NULL
)
2731 if (bfd_count_sections (abfd
) == 0)
2734 /* Select the allocated sections, and sort them. */
2736 amt
= bfd_count_sections (abfd
) * sizeof (asection
*);
2737 sections
= (asection
**) bfd_malloc (amt
);
2738 if (sections
== NULL
)
2742 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
2744 if ((s
->flags
& SEC_ALLOC
) != 0)
2750 BFD_ASSERT (i
<= bfd_count_sections (abfd
));
2753 qsort (sections
, (size_t) count
, sizeof (asection
*), elf_sort_sections
);
2755 /* Build the mapping. */
2760 /* If we have a .interp section, then create a PT_PHDR segment for
2761 the program headers and a PT_INTERP segment for the .interp
2763 s
= bfd_get_section_by_name (abfd
, ".interp");
2764 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
2766 amt
= sizeof (struct elf_segment_map
);
2767 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2771 m
->p_type
= PT_PHDR
;
2772 /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */
2773 m
->p_flags
= PF_R
| PF_X
;
2774 m
->p_flags_valid
= 1;
2775 m
->includes_phdrs
= 1;
2780 amt
= sizeof (struct elf_segment_map
);
2781 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2785 m
->p_type
= PT_INTERP
;
2793 /* Look through the sections. We put sections in the same program
2794 segment when the start of the second section can be placed within
2795 a few bytes of the end of the first section. */
2798 maxpagesize
= get_elf_backend_data (abfd
)->maxpagesize
;
2800 dynsec
= bfd_get_section_by_name (abfd
, ".dynamic");
2802 && (dynsec
->flags
& SEC_LOAD
) == 0)
2805 /* Deal with -Ttext or something similar such that the first section
2806 is not adjacent to the program headers. This is an
2807 approximation, since at this point we don't know exactly how many
2808 program headers we will need. */
2811 bfd_size_type phdr_size
;
2813 phdr_size
= elf_tdata (abfd
)->program_header_size
;
2815 phdr_size
= get_elf_backend_data (abfd
)->s
->sizeof_phdr
;
2816 if ((abfd
->flags
& D_PAGED
) == 0
2817 || sections
[0]->lma
< phdr_size
2818 || sections
[0]->lma
% maxpagesize
< phdr_size
% maxpagesize
)
2819 phdr_in_segment
= false;
2822 for (i
= 0, hdrpp
= sections
; i
< count
; i
++, hdrpp
++)
2825 boolean new_segment
;
2829 /* See if this section and the last one will fit in the same
2832 if (last_hdr
== NULL
)
2834 /* If we don't have a segment yet, then we don't need a new
2835 one (we build the last one after this loop). */
2836 new_segment
= false;
2838 else if (last_hdr
->lma
- last_hdr
->vma
!= hdr
->lma
- hdr
->vma
)
2840 /* If this section has a different relation between the
2841 virtual address and the load address, then we need a new
2845 else if (BFD_ALIGN (last_hdr
->lma
+ last_hdr
->_raw_size
, maxpagesize
)
2846 < BFD_ALIGN (hdr
->lma
, maxpagesize
))
2848 /* If putting this section in this segment would force us to
2849 skip a page in the segment, then we need a new segment. */
2852 else if ((last_hdr
->flags
& SEC_LOAD
) == 0
2853 && (hdr
->flags
& SEC_LOAD
) != 0)
2855 /* We don't want to put a loadable section after a
2856 nonloadable section in the same segment. */
2859 else if ((abfd
->flags
& D_PAGED
) == 0)
2861 /* If the file is not demand paged, which means that we
2862 don't require the sections to be correctly aligned in the
2863 file, then there is no other reason for a new segment. */
2864 new_segment
= false;
2867 && (hdr
->flags
& SEC_READONLY
) == 0
2868 && (BFD_ALIGN (last_hdr
->lma
+ last_hdr
->_raw_size
, maxpagesize
)
2871 /* We don't want to put a writable section in a read only
2872 segment, unless they are on the same page in memory
2873 anyhow. We already know that the last section does not
2874 bring us past the current section on the page, so the
2875 only case in which the new section is not on the same
2876 page as the previous section is when the previous section
2877 ends precisely on a page boundary. */
2882 /* Otherwise, we can use the same segment. */
2883 new_segment
= false;
2888 if ((hdr
->flags
& SEC_READONLY
) == 0)
2894 /* We need a new program segment. We must create a new program
2895 header holding all the sections from phdr_index until hdr. */
2897 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_segment
);
2904 if ((hdr
->flags
& SEC_READONLY
) == 0)
2911 phdr_in_segment
= false;
2914 /* Create a final PT_LOAD program segment. */
2915 if (last_hdr
!= NULL
)
2917 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_segment
);
2925 /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */
2928 amt
= sizeof (struct elf_segment_map
);
2929 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2933 m
->p_type
= PT_DYNAMIC
;
2935 m
->sections
[0] = dynsec
;
2941 /* For each loadable .note section, add a PT_NOTE segment. We don't
2942 use bfd_get_section_by_name, because if we link together
2943 nonloadable .note sections and loadable .note sections, we will
2944 generate two .note sections in the output file. FIXME: Using
2945 names for section types is bogus anyhow. */
2946 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
2948 if ((s
->flags
& SEC_LOAD
) != 0
2949 && strncmp (s
->name
, ".note", 5) == 0)
2951 amt
= sizeof (struct elf_segment_map
);
2952 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2956 m
->p_type
= PT_NOTE
;
2968 elf_tdata (abfd
)->segment_map
= mfirst
;
2972 if (sections
!= NULL
)
2977 /* Sort sections by address. */
2980 elf_sort_sections (arg1
, arg2
)
2984 const asection
*sec1
= *(const asection
**) arg1
;
2985 const asection
*sec2
= *(const asection
**) arg2
;
2987 /* Sort by LMA first, since this is the address used to
2988 place the section into a segment. */
2989 if (sec1
->lma
< sec2
->lma
)
2991 else if (sec1
->lma
> sec2
->lma
)
2994 /* Then sort by VMA. Normally the LMA and the VMA will be
2995 the same, and this will do nothing. */
2996 if (sec1
->vma
< sec2
->vma
)
2998 else if (sec1
->vma
> sec2
->vma
)
3001 /* Put !SEC_LOAD sections after SEC_LOAD ones. */
3003 #define TOEND(x) (((x)->flags & SEC_LOAD) == 0)
3009 /* If the indicies are the same, do not return 0
3010 here, but continue to try the next comparison. */
3011 if (sec1
->target_index
- sec2
->target_index
!= 0)
3012 return sec1
->target_index
- sec2
->target_index
;
3017 else if (TOEND (sec2
))
3022 /* Sort by size, to put zero sized sections
3023 before others at the same address. */
3025 if (sec1
->_raw_size
< sec2
->_raw_size
)
3027 if (sec1
->_raw_size
> sec2
->_raw_size
)
3030 return sec1
->target_index
- sec2
->target_index
;
3033 /* Assign file positions to the sections based on the mapping from
3034 sections to segments. This function also sets up some fields in
3035 the file header, and writes out the program headers. */
3038 assign_file_positions_for_segments (abfd
)
3041 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3043 struct elf_segment_map
*m
;
3045 Elf_Internal_Phdr
*phdrs
;
3047 bfd_vma filehdr_vaddr
, filehdr_paddr
;
3048 bfd_vma phdrs_vaddr
, phdrs_paddr
;
3049 Elf_Internal_Phdr
*p
;
3052 if (elf_tdata (abfd
)->segment_map
== NULL
)
3054 if (! map_sections_to_segments (abfd
))
3058 if (bed
->elf_backend_modify_segment_map
)
3060 if (! (*bed
->elf_backend_modify_segment_map
) (abfd
))
3065 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
3068 elf_elfheader (abfd
)->e_phoff
= bed
->s
->sizeof_ehdr
;
3069 elf_elfheader (abfd
)->e_phentsize
= bed
->s
->sizeof_phdr
;
3070 elf_elfheader (abfd
)->e_phnum
= count
;
3075 /* If we already counted the number of program segments, make sure
3076 that we allocated enough space. This happens when SIZEOF_HEADERS
3077 is used in a linker script. */
3078 alloc
= elf_tdata (abfd
)->program_header_size
/ bed
->s
->sizeof_phdr
;
3079 if (alloc
!= 0 && count
> alloc
)
3081 ((*_bfd_error_handler
)
3082 (_("%s: Not enough room for program headers (allocated %u, need %u)"),
3083 bfd_get_filename (abfd
), alloc
, count
));
3084 bfd_set_error (bfd_error_bad_value
);
3091 amt
= alloc
* sizeof (Elf_Internal_Phdr
);
3092 phdrs
= (Elf_Internal_Phdr
*) bfd_alloc (abfd
, amt
);
3096 off
= bed
->s
->sizeof_ehdr
;
3097 off
+= alloc
* bed
->s
->sizeof_phdr
;
3104 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
3111 /* If elf_segment_map is not from map_sections_to_segments, the
3112 sections may not be correctly ordered. */
3114 qsort (m
->sections
, (size_t) m
->count
, sizeof (asection
*),
3117 p
->p_type
= m
->p_type
;
3118 p
->p_flags
= m
->p_flags
;
3120 if (p
->p_type
== PT_LOAD
3122 && (m
->sections
[0]->flags
& SEC_ALLOC
) != 0)
3124 if ((abfd
->flags
& D_PAGED
) != 0)
3125 off
+= (m
->sections
[0]->vma
- off
) % bed
->maxpagesize
;
3128 bfd_size_type align
;
3131 for (i
= 0, secpp
= m
->sections
; i
< m
->count
; i
++, secpp
++)
3133 bfd_size_type secalign
;
3135 secalign
= bfd_get_section_alignment (abfd
, *secpp
);
3136 if (secalign
> align
)
3140 off
+= (m
->sections
[0]->vma
- off
) % (1 << align
);
3147 p
->p_vaddr
= m
->sections
[0]->vma
;
3149 if (m
->p_paddr_valid
)
3150 p
->p_paddr
= m
->p_paddr
;
3151 else if (m
->count
== 0)
3154 p
->p_paddr
= m
->sections
[0]->lma
;
3156 if (p
->p_type
== PT_LOAD
3157 && (abfd
->flags
& D_PAGED
) != 0)
3158 p
->p_align
= bed
->maxpagesize
;
3159 else if (m
->count
== 0)
3160 p
->p_align
= bed
->s
->file_align
;
3168 if (m
->includes_filehdr
)
3170 if (! m
->p_flags_valid
)
3173 p
->p_filesz
= bed
->s
->sizeof_ehdr
;
3174 p
->p_memsz
= bed
->s
->sizeof_ehdr
;
3177 BFD_ASSERT (p
->p_type
== PT_LOAD
);
3179 if (p
->p_vaddr
< (bfd_vma
) off
)
3181 _bfd_error_handler (_("%s: Not enough room for program headers, try linking with -N"),
3182 bfd_get_filename (abfd
));
3183 bfd_set_error (bfd_error_bad_value
);
3188 if (! m
->p_paddr_valid
)
3191 if (p
->p_type
== PT_LOAD
)
3193 filehdr_vaddr
= p
->p_vaddr
;
3194 filehdr_paddr
= p
->p_paddr
;
3198 if (m
->includes_phdrs
)
3200 if (! m
->p_flags_valid
)
3203 if (m
->includes_filehdr
)
3205 if (p
->p_type
== PT_LOAD
)
3207 phdrs_vaddr
= p
->p_vaddr
+ bed
->s
->sizeof_ehdr
;
3208 phdrs_paddr
= p
->p_paddr
+ bed
->s
->sizeof_ehdr
;
3213 p
->p_offset
= bed
->s
->sizeof_ehdr
;
3217 BFD_ASSERT (p
->p_type
== PT_LOAD
);
3218 p
->p_vaddr
-= off
- p
->p_offset
;
3219 if (! m
->p_paddr_valid
)
3220 p
->p_paddr
-= off
- p
->p_offset
;
3223 if (p
->p_type
== PT_LOAD
)
3225 phdrs_vaddr
= p
->p_vaddr
;
3226 phdrs_paddr
= p
->p_paddr
;
3229 phdrs_vaddr
= bed
->maxpagesize
+ bed
->s
->sizeof_ehdr
;
3232 p
->p_filesz
+= alloc
* bed
->s
->sizeof_phdr
;
3233 p
->p_memsz
+= alloc
* bed
->s
->sizeof_phdr
;
3236 if (p
->p_type
== PT_LOAD
3237 || (p
->p_type
== PT_NOTE
&& bfd_get_format (abfd
) == bfd_core
))
3239 if (! m
->includes_filehdr
&& ! m
->includes_phdrs
)
3245 adjust
= off
- (p
->p_offset
+ p
->p_filesz
);
3246 p
->p_filesz
+= adjust
;
3247 p
->p_memsz
+= adjust
;
3253 for (i
= 0, secpp
= m
->sections
; i
< m
->count
; i
++, secpp
++)
3257 bfd_size_type align
;
3261 align
= 1 << bfd_get_section_alignment (abfd
, sec
);
3263 /* The section may have artificial alignment forced by a
3264 link script. Notice this case by the gap between the
3265 cumulative phdr lma and the section's lma. */
3266 if (p
->p_paddr
+ p
->p_memsz
< sec
->lma
)
3268 bfd_vma adjust
= sec
->lma
- (p
->p_paddr
+ p
->p_memsz
);
3270 p
->p_memsz
+= adjust
;
3273 if ((flags
& SEC_LOAD
) != 0)
3274 p
->p_filesz
+= adjust
;
3277 if (p
->p_type
== PT_LOAD
)
3279 bfd_signed_vma adjust
;
3281 if ((flags
& SEC_LOAD
) != 0)
3283 adjust
= sec
->lma
- (p
->p_paddr
+ p
->p_memsz
);
3287 else if ((flags
& SEC_ALLOC
) != 0)
3289 /* The section VMA must equal the file position
3290 modulo the page size. FIXME: I'm not sure if
3291 this adjustment is really necessary. We used to
3292 not have the SEC_LOAD case just above, and then
3293 this was necessary, but now I'm not sure. */
3294 if ((abfd
->flags
& D_PAGED
) != 0)
3295 adjust
= (sec
->vma
- voff
) % bed
->maxpagesize
;
3297 adjust
= (sec
->vma
- voff
) % align
;
3306 (* _bfd_error_handler
)
3307 (_("Error: First section in segment (%s) starts at 0x%x"),
3308 bfd_section_name (abfd
, sec
), sec
->lma
);
3309 (* _bfd_error_handler
)
3310 (_(" whereas segment starts at 0x%x"),
3315 p
->p_memsz
+= adjust
;
3318 if ((flags
& SEC_LOAD
) != 0)
3319 p
->p_filesz
+= adjust
;
3324 /* We check SEC_HAS_CONTENTS here because if NOLOAD is
3325 used in a linker script we may have a section with
3326 SEC_LOAD clear but which is supposed to have
3328 if ((flags
& SEC_LOAD
) != 0
3329 || (flags
& SEC_HAS_CONTENTS
) != 0)
3330 off
+= sec
->_raw_size
;
3332 if ((flags
& SEC_ALLOC
) != 0)
3333 voff
+= sec
->_raw_size
;
3336 if (p
->p_type
== PT_NOTE
&& bfd_get_format (abfd
) == bfd_core
)
3338 /* The actual "note" segment has i == 0.
3339 This is the one that actually contains everything. */
3343 p
->p_filesz
= sec
->_raw_size
;
3344 off
+= sec
->_raw_size
;
3349 /* Fake sections -- don't need to be written. */
3352 flags
= sec
->flags
= 0;
3359 p
->p_memsz
+= sec
->_raw_size
;
3361 if ((flags
& SEC_LOAD
) != 0)
3362 p
->p_filesz
+= sec
->_raw_size
;
3364 if (align
> p
->p_align
3365 && (p
->p_type
!= PT_LOAD
|| (abfd
->flags
& D_PAGED
) == 0))
3369 if (! m
->p_flags_valid
)
3372 if ((flags
& SEC_CODE
) != 0)
3374 if ((flags
& SEC_READONLY
) == 0)
3380 /* Now that we have set the section file positions, we can set up
3381 the file positions for the non PT_LOAD segments. */
3382 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
3386 if (p
->p_type
!= PT_LOAD
&& m
->count
> 0)
3388 BFD_ASSERT (! m
->includes_filehdr
&& ! m
->includes_phdrs
);
3389 p
->p_offset
= m
->sections
[0]->filepos
;
3393 if (m
->includes_filehdr
)
3395 p
->p_vaddr
= filehdr_vaddr
;
3396 if (! m
->p_paddr_valid
)
3397 p
->p_paddr
= filehdr_paddr
;
3399 else if (m
->includes_phdrs
)
3401 p
->p_vaddr
= phdrs_vaddr
;
3402 if (! m
->p_paddr_valid
)
3403 p
->p_paddr
= phdrs_paddr
;
3408 /* Clear out any program headers we allocated but did not use. */
3409 for (; count
< alloc
; count
++, p
++)
3411 memset (p
, 0, sizeof *p
);
3412 p
->p_type
= PT_NULL
;
3415 elf_tdata (abfd
)->phdr
= phdrs
;
3417 elf_tdata (abfd
)->next_file_pos
= off
;
3419 /* Write out the program headers. */
3420 if (bfd_seek (abfd
, (bfd_signed_vma
) bed
->s
->sizeof_ehdr
, SEEK_SET
) != 0
3421 || bed
->s
->write_out_phdrs (abfd
, phdrs
, alloc
) != 0)
3427 /* Get the size of the program header.
3429 If this is called by the linker before any of the section VMA's are set, it
3430 can't calculate the correct value for a strange memory layout. This only
3431 happens when SIZEOF_HEADERS is used in a linker script. In this case,
3432 SORTED_HDRS is NULL and we assume the normal scenario of one text and one
3433 data segment (exclusive of .interp and .dynamic).
3435 ??? User written scripts must either not use SIZEOF_HEADERS, or assume there
3436 will be two segments. */
3438 static bfd_size_type
3439 get_program_header_size (abfd
)
3444 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3446 /* We can't return a different result each time we're called. */
3447 if (elf_tdata (abfd
)->program_header_size
!= 0)
3448 return elf_tdata (abfd
)->program_header_size
;
3450 if (elf_tdata (abfd
)->segment_map
!= NULL
)
3452 struct elf_segment_map
*m
;
3455 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
3457 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
3458 return elf_tdata (abfd
)->program_header_size
;
3461 /* Assume we will need exactly two PT_LOAD segments: one for text
3462 and one for data. */
3465 s
= bfd_get_section_by_name (abfd
, ".interp");
3466 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
3468 /* If we have a loadable interpreter section, we need a
3469 PT_INTERP segment. In this case, assume we also need a
3470 PT_PHDR segment, although that may not be true for all
3475 if (bfd_get_section_by_name (abfd
, ".dynamic") != NULL
)
3477 /* We need a PT_DYNAMIC segment. */
3481 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
3483 if ((s
->flags
& SEC_LOAD
) != 0
3484 && strncmp (s
->name
, ".note", 5) == 0)
3486 /* We need a PT_NOTE segment. */
3491 /* Let the backend count up any program headers it might need. */
3492 if (bed
->elf_backend_additional_program_headers
)
3496 a
= (*bed
->elf_backend_additional_program_headers
) (abfd
);
3502 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
3503 return elf_tdata (abfd
)->program_header_size
;
3506 /* Work out the file positions of all the sections. This is called by
3507 _bfd_elf_compute_section_file_positions. All the section sizes and
3508 VMAs must be known before this is called.
3510 We do not consider reloc sections at this point, unless they form
3511 part of the loadable image. Reloc sections are assigned file
3512 positions in assign_file_positions_for_relocs, which is called by
3513 write_object_contents and final_link.
3515 We also don't set the positions of the .symtab and .strtab here. */
3518 assign_file_positions_except_relocs (abfd
)
3521 struct elf_obj_tdata
* const tdata
= elf_tdata (abfd
);
3522 Elf_Internal_Ehdr
* const i_ehdrp
= elf_elfheader (abfd
);
3523 Elf_Internal_Shdr
** const i_shdrpp
= elf_elfsections (abfd
);
3525 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3527 if ((abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0
3528 && bfd_get_format (abfd
) != bfd_core
)
3530 Elf_Internal_Shdr
**hdrpp
;
3533 /* Start after the ELF header. */
3534 off
= i_ehdrp
->e_ehsize
;
3536 /* We are not creating an executable, which means that we are
3537 not creating a program header, and that the actual order of
3538 the sections in the file is unimportant. */
3539 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< i_ehdrp
->e_shnum
; i
++, hdrpp
++)
3541 Elf_Internal_Shdr
*hdr
;
3544 if (hdr
->sh_type
== SHT_REL
|| hdr
->sh_type
== SHT_RELA
)
3546 hdr
->sh_offset
= -1;
3549 if (i
== tdata
->symtab_section
3550 || i
== tdata
->strtab_section
)
3552 hdr
->sh_offset
= -1;
3556 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
3562 Elf_Internal_Shdr
**hdrpp
;
3564 /* Assign file positions for the loaded sections based on the
3565 assignment of sections to segments. */
3566 if (! assign_file_positions_for_segments (abfd
))
3569 /* Assign file positions for the other sections. */
3571 off
= elf_tdata (abfd
)->next_file_pos
;
3572 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< i_ehdrp
->e_shnum
; i
++, hdrpp
++)
3574 Elf_Internal_Shdr
*hdr
;
3577 if (hdr
->bfd_section
!= NULL
3578 && hdr
->bfd_section
->filepos
!= 0)
3579 hdr
->sh_offset
= hdr
->bfd_section
->filepos
;
3580 else if ((hdr
->sh_flags
& SHF_ALLOC
) != 0)
3582 ((*_bfd_error_handler
)
3583 (_("%s: warning: allocated section `%s' not in segment"),
3584 bfd_get_filename (abfd
),
3585 (hdr
->bfd_section
== NULL
3587 : hdr
->bfd_section
->name
)));
3588 if ((abfd
->flags
& D_PAGED
) != 0)
3589 off
+= (hdr
->sh_addr
- off
) % bed
->maxpagesize
;
3591 off
+= (hdr
->sh_addr
- off
) % hdr
->sh_addralign
;
3592 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
,
3595 else if (hdr
->sh_type
== SHT_REL
3596 || hdr
->sh_type
== SHT_RELA
3597 || hdr
== i_shdrpp
[tdata
->symtab_section
]
3598 || hdr
== i_shdrpp
[tdata
->strtab_section
])
3599 hdr
->sh_offset
= -1;
3601 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
3605 /* Place the section headers. */
3606 off
= align_file_position (off
, bed
->s
->file_align
);
3607 i_ehdrp
->e_shoff
= off
;
3608 off
+= i_ehdrp
->e_shnum
* i_ehdrp
->e_shentsize
;
3610 elf_tdata (abfd
)->next_file_pos
= off
;
3619 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
3620 Elf_Internal_Phdr
*i_phdrp
= 0; /* Program header table, internal form */
3621 Elf_Internal_Shdr
**i_shdrp
; /* Section header table, internal form */
3623 struct bfd_strtab_hash
*shstrtab
;
3624 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3626 i_ehdrp
= elf_elfheader (abfd
);
3627 i_shdrp
= elf_elfsections (abfd
);
3629 shstrtab
= _bfd_elf_stringtab_init ();
3630 if (shstrtab
== NULL
)
3633 elf_shstrtab (abfd
) = shstrtab
;
3635 i_ehdrp
->e_ident
[EI_MAG0
] = ELFMAG0
;
3636 i_ehdrp
->e_ident
[EI_MAG1
] = ELFMAG1
;
3637 i_ehdrp
->e_ident
[EI_MAG2
] = ELFMAG2
;
3638 i_ehdrp
->e_ident
[EI_MAG3
] = ELFMAG3
;
3640 i_ehdrp
->e_ident
[EI_CLASS
] = bed
->s
->elfclass
;
3641 i_ehdrp
->e_ident
[EI_DATA
] =
3642 bfd_big_endian (abfd
) ? ELFDATA2MSB
: ELFDATA2LSB
;
3643 i_ehdrp
->e_ident
[EI_VERSION
] = bed
->s
->ev_current
;
3645 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_NONE
;
3646 i_ehdrp
->e_ident
[EI_ABIVERSION
] = 0;
3648 for (count
= EI_PAD
; count
< EI_NIDENT
; count
++)
3649 i_ehdrp
->e_ident
[count
] = 0;
3651 if ((abfd
->flags
& DYNAMIC
) != 0)
3652 i_ehdrp
->e_type
= ET_DYN
;
3653 else if ((abfd
->flags
& EXEC_P
) != 0)
3654 i_ehdrp
->e_type
= ET_EXEC
;
3655 else if (bfd_get_format (abfd
) == bfd_core
)
3656 i_ehdrp
->e_type
= ET_CORE
;
3658 i_ehdrp
->e_type
= ET_REL
;
3660 switch (bfd_get_arch (abfd
))
3662 case bfd_arch_unknown
:
3663 i_ehdrp
->e_machine
= EM_NONE
;
3666 /* There used to be a long list of cases here, each one setting
3667 e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE
3668 in the corresponding bfd definition. To avoid duplication,
3669 the switch was removed. Machines that need special handling
3670 can generally do it in elf_backend_final_write_processing(),
3671 unless they need the information earlier than the final write.
3672 Such need can generally be supplied by replacing the tests for
3673 e_machine with the conditions used to determine it. */
3675 if (get_elf_backend_data (abfd
) != NULL
)
3676 i_ehdrp
->e_machine
= get_elf_backend_data (abfd
)->elf_machine_code
;
3678 i_ehdrp
->e_machine
= EM_NONE
;
3681 i_ehdrp
->e_version
= bed
->s
->ev_current
;
3682 i_ehdrp
->e_ehsize
= bed
->s
->sizeof_ehdr
;
3684 /* No program header, for now. */
3685 i_ehdrp
->e_phoff
= 0;
3686 i_ehdrp
->e_phentsize
= 0;
3687 i_ehdrp
->e_phnum
= 0;
3689 /* Each bfd section is section header entry. */
3690 i_ehdrp
->e_entry
= bfd_get_start_address (abfd
);
3691 i_ehdrp
->e_shentsize
= bed
->s
->sizeof_shdr
;
3693 /* If we're building an executable, we'll need a program header table. */
3694 if (abfd
->flags
& EXEC_P
)
3696 /* It all happens later. */
3698 i_ehdrp
->e_phentsize
= sizeof (Elf_External_Phdr
);
3700 /* elf_build_phdrs() returns a (NULL-terminated) array of
3701 Elf_Internal_Phdrs. */
3702 i_phdrp
= elf_build_phdrs (abfd
, i_ehdrp
, i_shdrp
, &i_ehdrp
->e_phnum
);
3703 i_ehdrp
->e_phoff
= outbase
;
3704 outbase
+= i_ehdrp
->e_phentsize
* i_ehdrp
->e_phnum
;
3709 i_ehdrp
->e_phentsize
= 0;
3711 i_ehdrp
->e_phoff
= 0;
3714 elf_tdata (abfd
)->symtab_hdr
.sh_name
=
3715 (unsigned int) _bfd_stringtab_add (shstrtab
, ".symtab", true, false);
3716 elf_tdata (abfd
)->strtab_hdr
.sh_name
=
3717 (unsigned int) _bfd_stringtab_add (shstrtab
, ".strtab", true, false);
3718 elf_tdata (abfd
)->shstrtab_hdr
.sh_name
=
3719 (unsigned int) _bfd_stringtab_add (shstrtab
, ".shstrtab", true, false);
3720 if (elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
3721 || elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
3722 || elf_tdata (abfd
)->shstrtab_hdr
.sh_name
== (unsigned int) -1)
3728 /* Assign file positions for all the reloc sections which are not part
3729 of the loadable file image. */
3732 _bfd_elf_assign_file_positions_for_relocs (abfd
)
3737 Elf_Internal_Shdr
**shdrpp
;
3739 off
= elf_tdata (abfd
)->next_file_pos
;
3741 for (i
= 1, shdrpp
= elf_elfsections (abfd
) + 1;
3742 i
< elf_elfheader (abfd
)->e_shnum
;
3745 Elf_Internal_Shdr
*shdrp
;
3748 if ((shdrp
->sh_type
== SHT_REL
|| shdrp
->sh_type
== SHT_RELA
)
3749 && shdrp
->sh_offset
== -1)
3750 off
= _bfd_elf_assign_file_position_for_section (shdrp
, off
, true);
3753 elf_tdata (abfd
)->next_file_pos
= off
;
3757 _bfd_elf_write_object_contents (abfd
)
3760 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3761 Elf_Internal_Ehdr
*i_ehdrp
;
3762 Elf_Internal_Shdr
**i_shdrp
;
3766 if (! abfd
->output_has_begun
3767 && ! _bfd_elf_compute_section_file_positions
3768 (abfd
, (struct bfd_link_info
*) NULL
))
3771 i_shdrp
= elf_elfsections (abfd
);
3772 i_ehdrp
= elf_elfheader (abfd
);
3775 bfd_map_over_sections (abfd
, bed
->s
->write_relocs
, &failed
);
3779 _bfd_elf_assign_file_positions_for_relocs (abfd
);
3781 /* After writing the headers, we need to write the sections too... */
3782 for (count
= 1; count
< i_ehdrp
->e_shnum
; count
++)
3784 if (bed
->elf_backend_section_processing
)
3785 (*bed
->elf_backend_section_processing
) (abfd
, i_shdrp
[count
]);
3786 if (i_shdrp
[count
]->contents
)
3788 bfd_size_type amt
= i_shdrp
[count
]->sh_size
;
3790 if (bfd_seek (abfd
, i_shdrp
[count
]->sh_offset
, SEEK_SET
) != 0
3791 || bfd_bwrite (i_shdrp
[count
]->contents
, amt
, abfd
) != amt
)
3796 /* Write out the section header names. */
3797 if (bfd_seek (abfd
, elf_tdata (abfd
)->shstrtab_hdr
.sh_offset
, SEEK_SET
) != 0
3798 || ! _bfd_stringtab_emit (abfd
, elf_shstrtab (abfd
)))
3801 if (bed
->elf_backend_final_write_processing
)
3802 (*bed
->elf_backend_final_write_processing
) (abfd
,
3803 elf_tdata (abfd
)->linker
);
3805 return bed
->s
->write_shdrs_and_ehdr (abfd
);
3809 _bfd_elf_write_corefile_contents (abfd
)
3812 /* Hopefully this can be done just like an object file. */
3813 return _bfd_elf_write_object_contents (abfd
);
3816 /* Given a section, search the header to find them. */
3819 _bfd_elf_section_from_bfd_section (abfd
, asect
)
3823 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3824 Elf_Internal_Shdr
**i_shdrp
= elf_elfsections (abfd
);
3826 Elf_Internal_Shdr
*hdr
;
3827 int maxindex
= elf_elfheader (abfd
)->e_shnum
;
3829 for (index
= 0; index
< maxindex
; index
++)
3831 hdr
= i_shdrp
[index
];
3832 if (hdr
->bfd_section
== asect
)
3836 if (bed
->elf_backend_section_from_bfd_section
)
3838 for (index
= 0; index
< maxindex
; index
++)
3842 hdr
= i_shdrp
[index
];
3844 if ((*bed
->elf_backend_section_from_bfd_section
)
3845 (abfd
, hdr
, asect
, &retval
))
3850 if (bfd_is_abs_section (asect
))
3852 if (bfd_is_com_section (asect
))
3854 if (bfd_is_und_section (asect
))
3857 bfd_set_error (bfd_error_nonrepresentable_section
);
3862 /* Given a BFD symbol, return the index in the ELF symbol table, or -1
3866 _bfd_elf_symbol_from_bfd_symbol (abfd
, asym_ptr_ptr
)
3868 asymbol
**asym_ptr_ptr
;
3870 asymbol
*asym_ptr
= *asym_ptr_ptr
;
3872 flagword flags
= asym_ptr
->flags
;
3874 /* When gas creates relocations against local labels, it creates its
3875 own symbol for the section, but does put the symbol into the
3876 symbol chain, so udata is 0. When the linker is generating
3877 relocatable output, this section symbol may be for one of the
3878 input sections rather than the output section. */
3879 if (asym_ptr
->udata
.i
== 0
3880 && (flags
& BSF_SECTION_SYM
)
3881 && asym_ptr
->section
)
3885 if (asym_ptr
->section
->output_section
!= NULL
)
3886 indx
= asym_ptr
->section
->output_section
->index
;
3888 indx
= asym_ptr
->section
->index
;
3889 if (indx
< elf_num_section_syms (abfd
)
3890 && elf_section_syms (abfd
)[indx
] != NULL
)
3891 asym_ptr
->udata
.i
= elf_section_syms (abfd
)[indx
]->udata
.i
;
3894 idx
= asym_ptr
->udata
.i
;
3898 /* This case can occur when using --strip-symbol on a symbol
3899 which is used in a relocation entry. */
3900 (*_bfd_error_handler
)
3901 (_("%s: symbol `%s' required but not present"),
3902 bfd_archive_filename (abfd
), bfd_asymbol_name (asym_ptr
));
3903 bfd_set_error (bfd_error_no_symbols
);
3910 _("elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n"),
3911 (long) asym_ptr
, asym_ptr
->name
, idx
, flags
,
3912 elf_symbol_flags (flags
));
3920 /* Copy private BFD data. This copies any program header information. */
3923 copy_private_bfd_data (ibfd
, obfd
)
3927 Elf_Internal_Ehdr
* iehdr
;
3928 struct elf_segment_map
* map
;
3929 struct elf_segment_map
* map_first
;
3930 struct elf_segment_map
** pointer_to_map
;
3931 Elf_Internal_Phdr
* segment
;
3934 unsigned int num_segments
;
3935 boolean phdr_included
= false;
3936 bfd_vma maxpagesize
;
3937 struct elf_segment_map
* phdr_adjust_seg
= NULL
;
3938 unsigned int phdr_adjust_num
= 0;
3940 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
3941 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
3944 if (elf_tdata (ibfd
)->phdr
== NULL
)
3947 iehdr
= elf_elfheader (ibfd
);
3950 pointer_to_map
= &map_first
;
3952 num_segments
= elf_elfheader (ibfd
)->e_phnum
;
3953 maxpagesize
= get_elf_backend_data (obfd
)->maxpagesize
;
3955 /* Returns the end address of the segment + 1. */
3956 #define SEGMENT_END(segment, start) \
3957 (start + (segment->p_memsz > segment->p_filesz \
3958 ? segment->p_memsz : segment->p_filesz))
3960 /* Returns true if the given section is contained within
3961 the given segment. VMA addresses are compared. */
3962 #define IS_CONTAINED_BY_VMA(section, segment) \
3963 (section->vma >= segment->p_vaddr \
3964 && (section->vma + section->_raw_size) \
3965 <= (SEGMENT_END (segment, segment->p_vaddr)))
3967 /* Returns true if the given section is contained within
3968 the given segment. LMA addresses are compared. */
3969 #define IS_CONTAINED_BY_LMA(section, segment, base) \
3970 (section->lma >= base \
3971 && (section->lma + section->_raw_size) \
3972 <= SEGMENT_END (segment, base))
3974 /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */
3975 #define IS_COREFILE_NOTE(p, s) \
3976 (p->p_type == PT_NOTE \
3977 && bfd_get_format (ibfd) == bfd_core \
3978 && s->vma == 0 && s->lma == 0 \
3979 && (bfd_vma) s->filepos >= p->p_offset \
3980 && (bfd_vma) s->filepos + s->_raw_size \
3981 <= p->p_offset + p->p_filesz)
3983 /* The complicated case when p_vaddr is 0 is to handle the Solaris
3984 linker, which generates a PT_INTERP section with p_vaddr and
3985 p_memsz set to 0. */
3986 #define IS_SOLARIS_PT_INTERP(p, s) \
3988 && p->p_filesz > 0 \
3989 && (s->flags & SEC_HAS_CONTENTS) != 0 \
3990 && s->_raw_size > 0 \
3991 && (bfd_vma) s->filepos >= p->p_offset \
3992 && ((bfd_vma) s->filepos + s->_raw_size \
3993 <= p->p_offset + p->p_filesz))
3995 /* Decide if the given section should be included in the given segment.
3996 A section will be included if:
3997 1. It is within the address space of the segment -- we use the LMA
3998 if that is set for the segment and the VMA otherwise,
3999 2. It is an allocated segment,
4000 3. There is an output section associated with it,
4001 4. The section has not already been allocated to a previous segment. */
4002 #define INCLUDE_SECTION_IN_SEGMENT(section, segment) \
4003 (((((segment->p_paddr \
4004 ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \
4005 : IS_CONTAINED_BY_VMA (section, segment)) \
4006 || IS_SOLARIS_PT_INTERP (segment, section)) \
4007 && (section->flags & SEC_ALLOC) != 0) \
4008 || IS_COREFILE_NOTE (segment, section)) \
4009 && section->output_section != NULL \
4010 && section->segment_mark == false)
4012 /* Returns true iff seg1 starts after the end of seg2. */
4013 #define SEGMENT_AFTER_SEGMENT(seg1, seg2) \
4014 (seg1->p_vaddr >= SEGMENT_END (seg2, seg2->p_vaddr))
4016 /* Returns true iff seg1 and seg2 overlap. */
4017 #define SEGMENT_OVERLAPS(seg1, seg2) \
4018 (!(SEGMENT_AFTER_SEGMENT (seg1, seg2) || SEGMENT_AFTER_SEGMENT (seg2, seg1)))
4020 /* Initialise the segment mark field. */
4021 for (section
= ibfd
->sections
; section
!= NULL
; section
= section
->next
)
4022 section
->segment_mark
= false;
4024 /* Scan through the segments specified in the program header
4025 of the input BFD. For this first scan we look for overlaps
4026 in the loadable segments. These can be created by wierd
4027 parameters to objcopy. */
4028 for (i
= 0, segment
= elf_tdata (ibfd
)->phdr
;
4033 Elf_Internal_Phdr
*segment2
;
4035 if (segment
->p_type
!= PT_LOAD
)
4038 /* Determine if this segment overlaps any previous segments. */
4039 for (j
= 0, segment2
= elf_tdata (ibfd
)->phdr
; j
< i
; j
++, segment2
++)
4041 bfd_signed_vma extra_length
;
4043 if (segment2
->p_type
!= PT_LOAD
4044 || ! SEGMENT_OVERLAPS (segment
, segment2
))
4047 /* Merge the two segments together. */
4048 if (segment2
->p_vaddr
< segment
->p_vaddr
)
4050 /* Extend SEGMENT2 to include SEGMENT and then delete
4053 SEGMENT_END (segment
, segment
->p_vaddr
)
4054 - SEGMENT_END (segment2
, segment2
->p_vaddr
);
4056 if (extra_length
> 0)
4058 segment2
->p_memsz
+= extra_length
;
4059 segment2
->p_filesz
+= extra_length
;
4062 segment
->p_type
= PT_NULL
;
4064 /* Since we have deleted P we must restart the outer loop. */
4066 segment
= elf_tdata (ibfd
)->phdr
;
4071 /* Extend SEGMENT to include SEGMENT2 and then delete
4074 SEGMENT_END (segment2
, segment2
->p_vaddr
)
4075 - SEGMENT_END (segment
, segment
->p_vaddr
);
4077 if (extra_length
> 0)
4079 segment
->p_memsz
+= extra_length
;
4080 segment
->p_filesz
+= extra_length
;
4083 segment2
->p_type
= PT_NULL
;
4088 /* The second scan attempts to assign sections to segments. */
4089 for (i
= 0, segment
= elf_tdata (ibfd
)->phdr
;
4093 unsigned int section_count
;
4094 asection
** sections
;
4095 asection
* output_section
;
4097 bfd_vma matching_lma
;
4098 bfd_vma suggested_lma
;
4102 if (segment
->p_type
== PT_NULL
)
4105 /* Compute how many sections might be placed into this segment. */
4107 for (section
= ibfd
->sections
; section
!= NULL
; section
= section
->next
)
4108 if (INCLUDE_SECTION_IN_SEGMENT (section
, segment
))
4111 /* Allocate a segment map big enough to contain all of the
4112 sections we have selected. */
4113 amt
= sizeof (struct elf_segment_map
);
4114 amt
+= ((bfd_size_type
) section_count
- 1) * sizeof (asection
*);
4115 map
= (struct elf_segment_map
*) bfd_alloc (obfd
, amt
);
4119 /* Initialise the fields of the segment map. Default to
4120 using the physical address of the segment in the input BFD. */
4122 map
->p_type
= segment
->p_type
;
4123 map
->p_flags
= segment
->p_flags
;
4124 map
->p_flags_valid
= 1;
4125 map
->p_paddr
= segment
->p_paddr
;
4126 map
->p_paddr_valid
= 1;
4128 /* Determine if this segment contains the ELF file header
4129 and if it contains the program headers themselves. */
4130 map
->includes_filehdr
= (segment
->p_offset
== 0
4131 && segment
->p_filesz
>= iehdr
->e_ehsize
);
4133 map
->includes_phdrs
= 0;
4135 if (! phdr_included
|| segment
->p_type
!= PT_LOAD
)
4137 map
->includes_phdrs
=
4138 (segment
->p_offset
<= (bfd_vma
) iehdr
->e_phoff
4139 && (segment
->p_offset
+ segment
->p_filesz
4140 >= ((bfd_vma
) iehdr
->e_phoff
4141 + iehdr
->e_phnum
* iehdr
->e_phentsize
)));
4143 if (segment
->p_type
== PT_LOAD
&& map
->includes_phdrs
)
4144 phdr_included
= true;
4147 if (section_count
== 0)
4149 /* Special segments, such as the PT_PHDR segment, may contain
4150 no sections, but ordinary, loadable segments should contain
4152 if (segment
->p_type
== PT_LOAD
)
4154 (_("%s: warning: Empty loadable segment detected\n"),
4155 bfd_archive_filename (ibfd
));
4158 *pointer_to_map
= map
;
4159 pointer_to_map
= &map
->next
;
4164 /* Now scan the sections in the input BFD again and attempt
4165 to add their corresponding output sections to the segment map.
4166 The problem here is how to handle an output section which has
4167 been moved (ie had its LMA changed). There are four possibilities:
4169 1. None of the sections have been moved.
4170 In this case we can continue to use the segment LMA from the
4173 2. All of the sections have been moved by the same amount.
4174 In this case we can change the segment's LMA to match the LMA
4175 of the first section.
4177 3. Some of the sections have been moved, others have not.
4178 In this case those sections which have not been moved can be
4179 placed in the current segment which will have to have its size,
4180 and possibly its LMA changed, and a new segment or segments will
4181 have to be created to contain the other sections.
4183 4. The sections have been moved, but not be the same amount.
4184 In this case we can change the segment's LMA to match the LMA
4185 of the first section and we will have to create a new segment
4186 or segments to contain the other sections.
4188 In order to save time, we allocate an array to hold the section
4189 pointers that we are interested in. As these sections get assigned
4190 to a segment, they are removed from this array. */
4192 amt
= (bfd_size_type
) section_count
* sizeof (asection
*);
4193 sections
= (asection
**) bfd_malloc (amt
);
4194 if (sections
== NULL
)
4197 /* Step One: Scan for segment vs section LMA conflicts.
4198 Also add the sections to the section array allocated above.
4199 Also add the sections to the current segment. In the common
4200 case, where the sections have not been moved, this means that
4201 we have completely filled the segment, and there is nothing
4207 for (j
= 0, section
= ibfd
->sections
;
4209 section
= section
->next
)
4211 if (INCLUDE_SECTION_IN_SEGMENT (section
, segment
))
4213 output_section
= section
->output_section
;
4215 sections
[j
++] = section
;
4217 /* The Solaris native linker always sets p_paddr to 0.
4218 We try to catch that case here, and set it to the
4220 if (segment
->p_paddr
== 0
4221 && segment
->p_vaddr
!= 0
4223 && output_section
->lma
!= 0
4224 && (output_section
->vma
== (segment
->p_vaddr
4225 + (map
->includes_filehdr
4228 + (map
->includes_phdrs
4230 * iehdr
->e_phentsize
)
4232 map
->p_paddr
= segment
->p_vaddr
;
4234 /* Match up the physical address of the segment with the
4235 LMA address of the output section. */
4236 if (IS_CONTAINED_BY_LMA (output_section
, segment
, map
->p_paddr
)
4237 || IS_COREFILE_NOTE (segment
, section
))
4239 if (matching_lma
== 0)
4240 matching_lma
= output_section
->lma
;
4242 /* We assume that if the section fits within the segment
4243 then it does not overlap any other section within that
4245 map
->sections
[isec
++] = output_section
;
4247 else if (suggested_lma
== 0)
4248 suggested_lma
= output_section
->lma
;
4252 BFD_ASSERT (j
== section_count
);
4254 /* Step Two: Adjust the physical address of the current segment,
4256 if (isec
== section_count
)
4258 /* All of the sections fitted within the segment as currently
4259 specified. This is the default case. Add the segment to
4260 the list of built segments and carry on to process the next
4261 program header in the input BFD. */
4262 map
->count
= section_count
;
4263 *pointer_to_map
= map
;
4264 pointer_to_map
= &map
->next
;
4271 if (matching_lma
!= 0)
4273 /* At least one section fits inside the current segment.
4274 Keep it, but modify its physical address to match the
4275 LMA of the first section that fitted. */
4276 map
->p_paddr
= matching_lma
;
4280 /* None of the sections fitted inside the current segment.
4281 Change the current segment's physical address to match
4282 the LMA of the first section. */
4283 map
->p_paddr
= suggested_lma
;
4286 /* Offset the segment physical address from the lma
4287 to allow for space taken up by elf headers. */
4288 if (map
->includes_filehdr
)
4289 map
->p_paddr
-= iehdr
->e_ehsize
;
4291 if (map
->includes_phdrs
)
4293 map
->p_paddr
-= iehdr
->e_phnum
* iehdr
->e_phentsize
;
4295 /* iehdr->e_phnum is just an estimate of the number
4296 of program headers that we will need. Make a note
4297 here of the number we used and the segment we chose
4298 to hold these headers, so that we can adjust the
4299 offset when we know the correct value. */
4300 phdr_adjust_num
= iehdr
->e_phnum
;
4301 phdr_adjust_seg
= map
;
4305 /* Step Three: Loop over the sections again, this time assigning
4306 those that fit to the current segment and remvoing them from the
4307 sections array; but making sure not to leave large gaps. Once all
4308 possible sections have been assigned to the current segment it is
4309 added to the list of built segments and if sections still remain
4310 to be assigned, a new segment is constructed before repeating
4318 /* Fill the current segment with sections that fit. */
4319 for (j
= 0; j
< section_count
; j
++)
4321 section
= sections
[j
];
4323 if (section
== NULL
)
4326 output_section
= section
->output_section
;
4328 BFD_ASSERT (output_section
!= NULL
);
4330 if (IS_CONTAINED_BY_LMA (output_section
, segment
, map
->p_paddr
)
4331 || IS_COREFILE_NOTE (segment
, section
))
4333 if (map
->count
== 0)
4335 /* If the first section in a segment does not start at
4336 the beginning of the segment, then something is
4338 if (output_section
->lma
!=
4340 + (map
->includes_filehdr
? iehdr
->e_ehsize
: 0)
4341 + (map
->includes_phdrs
4342 ? iehdr
->e_phnum
* iehdr
->e_phentsize
4348 asection
* prev_sec
;
4350 prev_sec
= map
->sections
[map
->count
- 1];
4352 /* If the gap between the end of the previous section
4353 and the start of this section is more than
4354 maxpagesize then we need to start a new segment. */
4355 if ((BFD_ALIGN (prev_sec
->lma
+ prev_sec
->_raw_size
,
4357 < BFD_ALIGN (output_section
->lma
, maxpagesize
))
4358 || ((prev_sec
->lma
+ prev_sec
->_raw_size
)
4359 > output_section
->lma
))
4361 if (suggested_lma
== 0)
4362 suggested_lma
= output_section
->lma
;
4368 map
->sections
[map
->count
++] = output_section
;
4371 section
->segment_mark
= true;
4373 else if (suggested_lma
== 0)
4374 suggested_lma
= output_section
->lma
;
4377 BFD_ASSERT (map
->count
> 0);
4379 /* Add the current segment to the list of built segments. */
4380 *pointer_to_map
= map
;
4381 pointer_to_map
= &map
->next
;
4383 if (isec
< section_count
)
4385 /* We still have not allocated all of the sections to
4386 segments. Create a new segment here, initialise it
4387 and carry on looping. */
4388 amt
= sizeof (struct elf_segment_map
);
4389 amt
+= ((bfd_size_type
) section_count
- 1) * sizeof (asection
*);
4390 map
= (struct elf_segment_map
*) bfd_alloc (obfd
, amt
);
4394 /* Initialise the fields of the segment map. Set the physical
4395 physical address to the LMA of the first section that has
4396 not yet been assigned. */
4398 map
->p_type
= segment
->p_type
;
4399 map
->p_flags
= segment
->p_flags
;
4400 map
->p_flags_valid
= 1;
4401 map
->p_paddr
= suggested_lma
;
4402 map
->p_paddr_valid
= 1;
4403 map
->includes_filehdr
= 0;
4404 map
->includes_phdrs
= 0;
4407 while (isec
< section_count
);
4412 /* The Solaris linker creates program headers in which all the
4413 p_paddr fields are zero. When we try to objcopy or strip such a
4414 file, we get confused. Check for this case, and if we find it
4415 reset the p_paddr_valid fields. */
4416 for (map
= map_first
; map
!= NULL
; map
= map
->next
)
4417 if (map
->p_paddr
!= 0)
4421 for (map
= map_first
; map
!= NULL
; map
= map
->next
)
4422 map
->p_paddr_valid
= 0;
4425 elf_tdata (obfd
)->segment_map
= map_first
;
4427 /* If we had to estimate the number of program headers that were
4428 going to be needed, then check our estimate know and adjust
4429 the offset if necessary. */
4430 if (phdr_adjust_seg
!= NULL
)
4434 for (count
= 0, map
= map_first
; map
!= NULL
; map
= map
->next
)
4437 if (count
> phdr_adjust_num
)
4438 phdr_adjust_seg
->p_paddr
4439 -= (count
- phdr_adjust_num
) * iehdr
->e_phentsize
;
4443 /* Final Step: Sort the segments into ascending order of physical
4445 if (map_first
!= NULL
)
4447 struct elf_segment_map
*prev
;
4450 for (map
= map_first
->next
; map
!= NULL
; prev
= map
, map
= map
->next
)
4452 /* Yes I know - its a bubble sort.... */
4453 if (map
->next
!= NULL
&& (map
->next
->p_paddr
< map
->p_paddr
))
4455 /* Swap map and map->next. */
4456 prev
->next
= map
->next
;
4457 map
->next
= map
->next
->next
;
4458 prev
->next
->next
= map
;
4468 #undef IS_CONTAINED_BY_VMA
4469 #undef IS_CONTAINED_BY_LMA
4470 #undef IS_COREFILE_NOTE
4471 #undef IS_SOLARIS_PT_INTERP
4472 #undef INCLUDE_SECTION_IN_SEGMENT
4473 #undef SEGMENT_AFTER_SEGMENT
4474 #undef SEGMENT_OVERLAPS
4478 /* Copy private section information. This copies over the entsize
4479 field, and sometimes the info field. */
4482 _bfd_elf_copy_private_section_data (ibfd
, isec
, obfd
, osec
)
4488 Elf_Internal_Shdr
*ihdr
, *ohdr
;
4490 if (ibfd
->xvec
->flavour
!= bfd_target_elf_flavour
4491 || obfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
4494 /* Copy over private BFD data if it has not already been copied.
4495 This must be done here, rather than in the copy_private_bfd_data
4496 entry point, because the latter is called after the section
4497 contents have been set, which means that the program headers have
4498 already been worked out. */
4499 if (elf_tdata (obfd
)->segment_map
== NULL
4500 && elf_tdata (ibfd
)->phdr
!= NULL
)
4504 /* Only set up the segments if there are no more SEC_ALLOC
4505 sections. FIXME: This won't do the right thing if objcopy is
4506 used to remove the last SEC_ALLOC section, since objcopy
4507 won't call this routine in that case. */
4508 for (s
= isec
->next
; s
!= NULL
; s
= s
->next
)
4509 if ((s
->flags
& SEC_ALLOC
) != 0)
4513 if (! copy_private_bfd_data (ibfd
, obfd
))
4518 ihdr
= &elf_section_data (isec
)->this_hdr
;
4519 ohdr
= &elf_section_data (osec
)->this_hdr
;
4521 ohdr
->sh_entsize
= ihdr
->sh_entsize
;
4523 if (ihdr
->sh_type
== SHT_SYMTAB
4524 || ihdr
->sh_type
== SHT_DYNSYM
4525 || ihdr
->sh_type
== SHT_GNU_verneed
4526 || ihdr
->sh_type
== SHT_GNU_verdef
)
4527 ohdr
->sh_info
= ihdr
->sh_info
;
4529 elf_section_data (osec
)->use_rela_p
4530 = elf_section_data (isec
)->use_rela_p
;
4535 /* Copy private symbol information. If this symbol is in a section
4536 which we did not map into a BFD section, try to map the section
4537 index correctly. We use special macro definitions for the mapped
4538 section indices; these definitions are interpreted by the
4539 swap_out_syms function. */
4541 #define MAP_ONESYMTAB (SHN_LORESERVE - 1)
4542 #define MAP_DYNSYMTAB (SHN_LORESERVE - 2)
4543 #define MAP_STRTAB (SHN_LORESERVE - 3)
4544 #define MAP_SHSTRTAB (SHN_LORESERVE - 4)
4547 _bfd_elf_copy_private_symbol_data (ibfd
, isymarg
, obfd
, osymarg
)
4553 elf_symbol_type
*isym
, *osym
;
4555 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
4556 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
4559 isym
= elf_symbol_from (ibfd
, isymarg
);
4560 osym
= elf_symbol_from (obfd
, osymarg
);
4564 && bfd_is_abs_section (isym
->symbol
.section
))
4568 shndx
= isym
->internal_elf_sym
.st_shndx
;
4569 if (shndx
== elf_onesymtab (ibfd
))
4570 shndx
= MAP_ONESYMTAB
;
4571 else if (shndx
== elf_dynsymtab (ibfd
))
4572 shndx
= MAP_DYNSYMTAB
;
4573 else if (shndx
== elf_tdata (ibfd
)->strtab_section
)
4575 else if (shndx
== elf_tdata (ibfd
)->shstrtab_section
)
4576 shndx
= MAP_SHSTRTAB
;
4577 osym
->internal_elf_sym
.st_shndx
= shndx
;
4583 /* Swap out the symbols. */
4586 swap_out_syms (abfd
, sttp
, relocatable_p
)
4588 struct bfd_strtab_hash
**sttp
;
4591 struct elf_backend_data
*bed
;
4594 struct bfd_strtab_hash
*stt
;
4595 Elf_Internal_Shdr
*symtab_hdr
;
4596 Elf_Internal_Shdr
*symstrtab_hdr
;
4597 char *outbound_syms
;
4601 if (!elf_map_symbols (abfd
))
4604 /* Dump out the symtabs. */
4605 stt
= _bfd_elf_stringtab_init ();
4609 bed
= get_elf_backend_data (abfd
);
4610 symcount
= bfd_get_symcount (abfd
);
4611 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4612 symtab_hdr
->sh_type
= SHT_SYMTAB
;
4613 symtab_hdr
->sh_entsize
= bed
->s
->sizeof_sym
;
4614 symtab_hdr
->sh_size
= symtab_hdr
->sh_entsize
* (symcount
+ 1);
4615 symtab_hdr
->sh_info
= elf_num_locals (abfd
) + 1;
4616 symtab_hdr
->sh_addralign
= bed
->s
->file_align
;
4618 symstrtab_hdr
= &elf_tdata (abfd
)->strtab_hdr
;
4619 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
4621 amt
= (bfd_size_type
) (1 + symcount
) * bed
->s
->sizeof_sym
;
4622 outbound_syms
= bfd_alloc (abfd
, amt
);
4623 if (outbound_syms
== NULL
)
4625 symtab_hdr
->contents
= (PTR
) outbound_syms
;
4627 /* now generate the data (for "contents") */
4629 /* Fill in zeroth symbol and swap it out. */
4630 Elf_Internal_Sym sym
;
4636 sym
.st_shndx
= SHN_UNDEF
;
4637 bed
->s
->swap_symbol_out (abfd
, &sym
, (PTR
) outbound_syms
);
4638 outbound_syms
+= bed
->s
->sizeof_sym
;
4641 syms
= bfd_get_outsymbols (abfd
);
4642 for (idx
= 0; idx
< symcount
; idx
++)
4644 Elf_Internal_Sym sym
;
4645 bfd_vma value
= syms
[idx
]->value
;
4646 elf_symbol_type
*type_ptr
;
4647 flagword flags
= syms
[idx
]->flags
;
4650 if ((flags
& (BSF_SECTION_SYM
| BSF_GLOBAL
)) == BSF_SECTION_SYM
)
4652 /* Local section symbols have no name. */
4657 sym
.st_name
= (unsigned long) _bfd_stringtab_add (stt
,
4660 if (sym
.st_name
== (unsigned long) -1)
4664 type_ptr
= elf_symbol_from (abfd
, syms
[idx
]);
4666 if ((flags
& BSF_SECTION_SYM
) == 0
4667 && bfd_is_com_section (syms
[idx
]->section
))
4669 /* ELF common symbols put the alignment into the `value' field,
4670 and the size into the `size' field. This is backwards from
4671 how BFD handles it, so reverse it here. */
4672 sym
.st_size
= value
;
4673 if (type_ptr
== NULL
4674 || type_ptr
->internal_elf_sym
.st_value
== 0)
4675 sym
.st_value
= value
>= 16 ? 16 : (1 << bfd_log2 (value
));
4677 sym
.st_value
= type_ptr
->internal_elf_sym
.st_value
;
4678 sym
.st_shndx
= _bfd_elf_section_from_bfd_section
4679 (abfd
, syms
[idx
]->section
);
4683 asection
*sec
= syms
[idx
]->section
;
4686 if (sec
->output_section
)
4688 value
+= sec
->output_offset
;
4689 sec
= sec
->output_section
;
4691 /* Don't add in the section vma for relocatable output. */
4692 if (! relocatable_p
)
4694 sym
.st_value
= value
;
4695 sym
.st_size
= type_ptr
? type_ptr
->internal_elf_sym
.st_size
: 0;
4697 if (bfd_is_abs_section (sec
)
4699 && type_ptr
->internal_elf_sym
.st_shndx
!= 0)
4701 /* This symbol is in a real ELF section which we did
4702 not create as a BFD section. Undo the mapping done
4703 by copy_private_symbol_data. */
4704 shndx
= type_ptr
->internal_elf_sym
.st_shndx
;
4708 shndx
= elf_onesymtab (abfd
);
4711 shndx
= elf_dynsymtab (abfd
);
4714 shndx
= elf_tdata (abfd
)->strtab_section
;
4717 shndx
= elf_tdata (abfd
)->shstrtab_section
;
4725 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
4731 /* Writing this would be a hell of a lot easier if
4732 we had some decent documentation on bfd, and
4733 knew what to expect of the library, and what to
4734 demand of applications. For example, it
4735 appears that `objcopy' might not set the
4736 section of a symbol to be a section that is
4737 actually in the output file. */
4738 sec2
= bfd_get_section_by_name (abfd
, sec
->name
);
4739 BFD_ASSERT (sec2
!= 0);
4740 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec2
);
4741 BFD_ASSERT (shndx
!= -1);
4745 sym
.st_shndx
= shndx
;
4748 if ((flags
& BSF_FUNCTION
) != 0)
4750 else if ((flags
& BSF_OBJECT
) != 0)
4755 /* Processor-specific types */
4756 if (type_ptr
!= NULL
4757 && bed
->elf_backend_get_symbol_type
)
4758 type
= ((*bed
->elf_backend_get_symbol_type
)
4759 (&type_ptr
->internal_elf_sym
, type
));
4761 if (flags
& BSF_SECTION_SYM
)
4763 if (flags
& BSF_GLOBAL
)
4764 sym
.st_info
= ELF_ST_INFO (STB_GLOBAL
, STT_SECTION
);
4766 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_SECTION
);
4768 else if (bfd_is_com_section (syms
[idx
]->section
))
4769 sym
.st_info
= ELF_ST_INFO (STB_GLOBAL
, type
);
4770 else if (bfd_is_und_section (syms
[idx
]->section
))
4771 sym
.st_info
= ELF_ST_INFO (((flags
& BSF_WEAK
)
4775 else if (flags
& BSF_FILE
)
4776 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_FILE
);
4779 int bind
= STB_LOCAL
;
4781 if (flags
& BSF_LOCAL
)
4783 else if (flags
& BSF_WEAK
)
4785 else if (flags
& BSF_GLOBAL
)
4788 sym
.st_info
= ELF_ST_INFO (bind
, type
);
4791 if (type_ptr
!= NULL
)
4792 sym
.st_other
= type_ptr
->internal_elf_sym
.st_other
;
4796 bed
->s
->swap_symbol_out (abfd
, &sym
, (PTR
) outbound_syms
);
4797 outbound_syms
+= bed
->s
->sizeof_sym
;
4801 symstrtab_hdr
->sh_size
= _bfd_stringtab_size (stt
);
4802 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
4804 symstrtab_hdr
->sh_flags
= 0;
4805 symstrtab_hdr
->sh_addr
= 0;
4806 symstrtab_hdr
->sh_entsize
= 0;
4807 symstrtab_hdr
->sh_link
= 0;
4808 symstrtab_hdr
->sh_info
= 0;
4809 symstrtab_hdr
->sh_addralign
= 1;
4814 /* Return the number of bytes required to hold the symtab vector.
4816 Note that we base it on the count plus 1, since we will null terminate
4817 the vector allocated based on this size. However, the ELF symbol table
4818 always has a dummy entry as symbol #0, so it ends up even. */
4821 _bfd_elf_get_symtab_upper_bound (abfd
)
4826 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4828 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
4829 symtab_size
= (symcount
- 1 + 1) * (sizeof (asymbol
*));
4835 _bfd_elf_get_dynamic_symtab_upper_bound (abfd
)
4840 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->dynsymtab_hdr
;
4842 if (elf_dynsymtab (abfd
) == 0)
4844 bfd_set_error (bfd_error_invalid_operation
);
4848 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
4849 symtab_size
= (symcount
- 1 + 1) * (sizeof (asymbol
*));
4855 _bfd_elf_get_reloc_upper_bound (abfd
, asect
)
4856 bfd
*abfd ATTRIBUTE_UNUSED
;
4859 return (asect
->reloc_count
+ 1) * sizeof (arelent
*);
4862 /* Canonicalize the relocs. */
4865 _bfd_elf_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
4873 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
4875 if (! bed
->s
->slurp_reloc_table (abfd
, section
, symbols
, false))
4878 tblptr
= section
->relocation
;
4879 for (i
= 0; i
< section
->reloc_count
; i
++)
4880 *relptr
++ = tblptr
++;
4884 return section
->reloc_count
;
4888 _bfd_elf_get_symtab (abfd
, alocation
)
4890 asymbol
**alocation
;
4892 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
4893 long symcount
= bed
->s
->slurp_symbol_table (abfd
, alocation
, false);
4896 bfd_get_symcount (abfd
) = symcount
;
4901 _bfd_elf_canonicalize_dynamic_symtab (abfd
, alocation
)
4903 asymbol
**alocation
;
4905 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
4906 return bed
->s
->slurp_symbol_table (abfd
, alocation
, true);
4909 /* Return the size required for the dynamic reloc entries. Any
4910 section that was actually installed in the BFD, and has type
4911 SHT_REL or SHT_RELA, and uses the dynamic symbol table, is
4912 considered to be a dynamic reloc section. */
4915 _bfd_elf_get_dynamic_reloc_upper_bound (abfd
)
4921 if (elf_dynsymtab (abfd
) == 0)
4923 bfd_set_error (bfd_error_invalid_operation
);
4927 ret
= sizeof (arelent
*);
4928 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
4929 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
4930 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_REL
4931 || elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
4932 ret
+= ((s
->_raw_size
/ elf_section_data (s
)->this_hdr
.sh_entsize
)
4933 * sizeof (arelent
*));
4938 /* Canonicalize the dynamic relocation entries. Note that we return
4939 the dynamic relocations as a single block, although they are
4940 actually associated with particular sections; the interface, which
4941 was designed for SunOS style shared libraries, expects that there
4942 is only one set of dynamic relocs. Any section that was actually
4943 installed in the BFD, and has type SHT_REL or SHT_RELA, and uses
4944 the dynamic symbol table, is considered to be a dynamic reloc
4948 _bfd_elf_canonicalize_dynamic_reloc (abfd
, storage
, syms
)
4953 boolean (*slurp_relocs
) PARAMS ((bfd
*, asection
*, asymbol
**, boolean
));
4957 if (elf_dynsymtab (abfd
) == 0)
4959 bfd_set_error (bfd_error_invalid_operation
);
4963 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
4965 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
4967 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
4968 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_REL
4969 || elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
4974 if (! (*slurp_relocs
) (abfd
, s
, syms
, true))
4976 count
= s
->_raw_size
/ elf_section_data (s
)->this_hdr
.sh_entsize
;
4978 for (i
= 0; i
< count
; i
++)
4989 /* Read in the version information. */
4992 _bfd_elf_slurp_version_tables (abfd
)
4995 bfd_byte
*contents
= NULL
;
4998 if (elf_dynverdef (abfd
) != 0)
5000 Elf_Internal_Shdr
*hdr
;
5001 Elf_External_Verdef
*everdef
;
5002 Elf_Internal_Verdef
*iverdef
;
5003 Elf_Internal_Verdef
*iverdefarr
;
5004 Elf_Internal_Verdef iverdefmem
;
5006 unsigned int maxidx
;
5008 hdr
= &elf_tdata (abfd
)->dynverdef_hdr
;
5010 contents
= (bfd_byte
*) bfd_malloc (hdr
->sh_size
);
5011 if (contents
== NULL
)
5013 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
5014 || bfd_bread ((PTR
) contents
, hdr
->sh_size
, abfd
) != hdr
->sh_size
)
5017 /* We know the number of entries in the section but not the maximum
5018 index. Therefore we have to run through all entries and find
5020 everdef
= (Elf_External_Verdef
*) contents
;
5022 for (i
= 0; i
< hdr
->sh_info
; ++i
)
5024 _bfd_elf_swap_verdef_in (abfd
, everdef
, &iverdefmem
);
5026 if ((iverdefmem
.vd_ndx
& ((unsigned) VERSYM_VERSION
)) > maxidx
)
5027 maxidx
= iverdefmem
.vd_ndx
& ((unsigned) VERSYM_VERSION
);
5029 everdef
= ((Elf_External_Verdef
*)
5030 ((bfd_byte
*) everdef
+ iverdefmem
.vd_next
));
5033 amt
= (bfd_size_type
) maxidx
* sizeof (Elf_Internal_Verdef
);
5034 elf_tdata (abfd
)->verdef
= (Elf_Internal_Verdef
*) bfd_zalloc (abfd
, amt
);
5035 if (elf_tdata (abfd
)->verdef
== NULL
)
5038 elf_tdata (abfd
)->cverdefs
= maxidx
;
5040 everdef
= (Elf_External_Verdef
*) contents
;
5041 iverdefarr
= elf_tdata (abfd
)->verdef
;
5042 for (i
= 0; i
< hdr
->sh_info
; i
++)
5044 Elf_External_Verdaux
*everdaux
;
5045 Elf_Internal_Verdaux
*iverdaux
;
5048 _bfd_elf_swap_verdef_in (abfd
, everdef
, &iverdefmem
);
5050 iverdef
= &iverdefarr
[(iverdefmem
.vd_ndx
& VERSYM_VERSION
) - 1];
5051 memcpy (iverdef
, &iverdefmem
, sizeof (Elf_Internal_Verdef
));
5053 iverdef
->vd_bfd
= abfd
;
5055 amt
= (bfd_size_type
) iverdef
->vd_cnt
* sizeof (Elf_Internal_Verdaux
);
5056 iverdef
->vd_auxptr
= (Elf_Internal_Verdaux
*) bfd_alloc (abfd
, amt
);
5057 if (iverdef
->vd_auxptr
== NULL
)
5060 everdaux
= ((Elf_External_Verdaux
*)
5061 ((bfd_byte
*) everdef
+ iverdef
->vd_aux
));
5062 iverdaux
= iverdef
->vd_auxptr
;
5063 for (j
= 0; j
< iverdef
->vd_cnt
; j
++, iverdaux
++)
5065 _bfd_elf_swap_verdaux_in (abfd
, everdaux
, iverdaux
);
5067 iverdaux
->vda_nodename
=
5068 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
5069 iverdaux
->vda_name
);
5070 if (iverdaux
->vda_nodename
== NULL
)
5073 if (j
+ 1 < iverdef
->vd_cnt
)
5074 iverdaux
->vda_nextptr
= iverdaux
+ 1;
5076 iverdaux
->vda_nextptr
= NULL
;
5078 everdaux
= ((Elf_External_Verdaux
*)
5079 ((bfd_byte
*) everdaux
+ iverdaux
->vda_next
));
5082 iverdef
->vd_nodename
= iverdef
->vd_auxptr
->vda_nodename
;
5084 if (i
+ 1 < hdr
->sh_info
)
5085 iverdef
->vd_nextdef
= iverdef
+ 1;
5087 iverdef
->vd_nextdef
= NULL
;
5089 everdef
= ((Elf_External_Verdef
*)
5090 ((bfd_byte
*) everdef
+ iverdef
->vd_next
));
5097 if (elf_dynverref (abfd
) != 0)
5099 Elf_Internal_Shdr
*hdr
;
5100 Elf_External_Verneed
*everneed
;
5101 Elf_Internal_Verneed
*iverneed
;
5104 hdr
= &elf_tdata (abfd
)->dynverref_hdr
;
5106 amt
= (bfd_size_type
) hdr
->sh_info
* sizeof (Elf_Internal_Verneed
);
5107 elf_tdata (abfd
)->verref
=
5108 (Elf_Internal_Verneed
*) bfd_zalloc (abfd
, amt
);
5109 if (elf_tdata (abfd
)->verref
== NULL
)
5112 elf_tdata (abfd
)->cverrefs
= hdr
->sh_info
;
5114 contents
= (bfd_byte
*) bfd_malloc (hdr
->sh_size
);
5115 if (contents
== NULL
)
5117 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
5118 || bfd_bread ((PTR
) contents
, hdr
->sh_size
, abfd
) != hdr
->sh_size
)
5121 everneed
= (Elf_External_Verneed
*) contents
;
5122 iverneed
= elf_tdata (abfd
)->verref
;
5123 for (i
= 0; i
< hdr
->sh_info
; i
++, iverneed
++)
5125 Elf_External_Vernaux
*evernaux
;
5126 Elf_Internal_Vernaux
*ivernaux
;
5129 _bfd_elf_swap_verneed_in (abfd
, everneed
, iverneed
);
5131 iverneed
->vn_bfd
= abfd
;
5133 iverneed
->vn_filename
=
5134 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
5136 if (iverneed
->vn_filename
== NULL
)
5139 amt
= iverneed
->vn_cnt
;
5140 amt
*= sizeof (Elf_Internal_Vernaux
);
5141 iverneed
->vn_auxptr
= (Elf_Internal_Vernaux
*) bfd_alloc (abfd
, amt
);
5143 evernaux
= ((Elf_External_Vernaux
*)
5144 ((bfd_byte
*) everneed
+ iverneed
->vn_aux
));
5145 ivernaux
= iverneed
->vn_auxptr
;
5146 for (j
= 0; j
< iverneed
->vn_cnt
; j
++, ivernaux
++)
5148 _bfd_elf_swap_vernaux_in (abfd
, evernaux
, ivernaux
);
5150 ivernaux
->vna_nodename
=
5151 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
5152 ivernaux
->vna_name
);
5153 if (ivernaux
->vna_nodename
== NULL
)
5156 if (j
+ 1 < iverneed
->vn_cnt
)
5157 ivernaux
->vna_nextptr
= ivernaux
+ 1;
5159 ivernaux
->vna_nextptr
= NULL
;
5161 evernaux
= ((Elf_External_Vernaux
*)
5162 ((bfd_byte
*) evernaux
+ ivernaux
->vna_next
));
5165 if (i
+ 1 < hdr
->sh_info
)
5166 iverneed
->vn_nextref
= iverneed
+ 1;
5168 iverneed
->vn_nextref
= NULL
;
5170 everneed
= ((Elf_External_Verneed
*)
5171 ((bfd_byte
*) everneed
+ iverneed
->vn_next
));
5181 if (contents
== NULL
)
5187 _bfd_elf_make_empty_symbol (abfd
)
5190 elf_symbol_type
*newsym
;
5191 bfd_size_type amt
= sizeof (elf_symbol_type
);
5193 newsym
= (elf_symbol_type
*) bfd_zalloc (abfd
, amt
);
5198 newsym
->symbol
.the_bfd
= abfd
;
5199 return &newsym
->symbol
;
5204 _bfd_elf_get_symbol_info (ignore_abfd
, symbol
, ret
)
5205 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
5209 bfd_symbol_info (symbol
, ret
);
5212 /* Return whether a symbol name implies a local symbol. Most targets
5213 use this function for the is_local_label_name entry point, but some
5217 _bfd_elf_is_local_label_name (abfd
, name
)
5218 bfd
*abfd ATTRIBUTE_UNUSED
;
5221 /* Normal local symbols start with ``.L''. */
5222 if (name
[0] == '.' && name
[1] == 'L')
5225 /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate
5226 DWARF debugging symbols starting with ``..''. */
5227 if (name
[0] == '.' && name
[1] == '.')
5230 /* gcc will sometimes generate symbols beginning with ``_.L_'' when
5231 emitting DWARF debugging output. I suspect this is actually a
5232 small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call
5233 ASM_GENERATE_INTERNAL_LABEL, and this causes the leading
5234 underscore to be emitted on some ELF targets). For ease of use,
5235 we treat such symbols as local. */
5236 if (name
[0] == '_' && name
[1] == '.' && name
[2] == 'L' && name
[3] == '_')
5243 _bfd_elf_get_lineno (ignore_abfd
, symbol
)
5244 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
5245 asymbol
*symbol ATTRIBUTE_UNUSED
;
5252 _bfd_elf_set_arch_mach (abfd
, arch
, machine
)
5254 enum bfd_architecture arch
;
5255 unsigned long machine
;
5257 /* If this isn't the right architecture for this backend, and this
5258 isn't the generic backend, fail. */
5259 if (arch
!= get_elf_backend_data (abfd
)->arch
5260 && arch
!= bfd_arch_unknown
5261 && get_elf_backend_data (abfd
)->arch
!= bfd_arch_unknown
)
5264 return bfd_default_set_arch_mach (abfd
, arch
, machine
);
5267 /* Find the function to a particular section and offset,
5268 for error reporting. */
5271 elf_find_function (abfd
, section
, symbols
, offset
,
5272 filename_ptr
, functionname_ptr
)
5273 bfd
*abfd ATTRIBUTE_UNUSED
;
5277 const char **filename_ptr
;
5278 const char **functionname_ptr
;
5280 const char *filename
;
5289 for (p
= symbols
; *p
!= NULL
; p
++)
5293 q
= (elf_symbol_type
*) *p
;
5295 if (bfd_get_section (&q
->symbol
) != section
)
5298 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
5303 filename
= bfd_asymbol_name (&q
->symbol
);
5307 if (q
->symbol
.section
== section
5308 && q
->symbol
.value
>= low_func
5309 && q
->symbol
.value
<= offset
)
5311 func
= (asymbol
*) q
;
5312 low_func
= q
->symbol
.value
;
5322 *filename_ptr
= filename
;
5323 if (functionname_ptr
)
5324 *functionname_ptr
= bfd_asymbol_name (func
);
5329 /* Find the nearest line to a particular section and offset,
5330 for error reporting. */
5333 _bfd_elf_find_nearest_line (abfd
, section
, symbols
, offset
,
5334 filename_ptr
, functionname_ptr
, line_ptr
)
5339 const char **filename_ptr
;
5340 const char **functionname_ptr
;
5341 unsigned int *line_ptr
;
5345 if (_bfd_dwarf1_find_nearest_line (abfd
, section
, symbols
, offset
,
5346 filename_ptr
, functionname_ptr
,
5349 if (!*functionname_ptr
)
5350 elf_find_function (abfd
, section
, symbols
, offset
,
5351 *filename_ptr
? NULL
: filename_ptr
,
5357 if (_bfd_dwarf2_find_nearest_line (abfd
, section
, symbols
, offset
,
5358 filename_ptr
, functionname_ptr
,
5360 &elf_tdata (abfd
)->dwarf2_find_line_info
))
5362 if (!*functionname_ptr
)
5363 elf_find_function (abfd
, section
, symbols
, offset
,
5364 *filename_ptr
? NULL
: filename_ptr
,
5370 if (! _bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
5371 &found
, filename_ptr
,
5372 functionname_ptr
, line_ptr
,
5373 &elf_tdata (abfd
)->line_info
))
5378 if (symbols
== NULL
)
5381 if (! elf_find_function (abfd
, section
, symbols
, offset
,
5382 filename_ptr
, functionname_ptr
))
5390 _bfd_elf_sizeof_headers (abfd
, reloc
)
5396 ret
= get_elf_backend_data (abfd
)->s
->sizeof_ehdr
;
5398 ret
+= get_program_header_size (abfd
);
5403 _bfd_elf_set_section_contents (abfd
, section
, location
, offset
, count
)
5408 bfd_size_type count
;
5410 Elf_Internal_Shdr
*hdr
;
5413 if (! abfd
->output_has_begun
5414 && ! _bfd_elf_compute_section_file_positions
5415 (abfd
, (struct bfd_link_info
*) NULL
))
5418 hdr
= &elf_section_data (section
)->this_hdr
;
5419 pos
= hdr
->sh_offset
+ offset
;
5420 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0
5421 || bfd_bwrite (location
, count
, abfd
) != count
)
5428 _bfd_elf_no_info_to_howto (abfd
, cache_ptr
, dst
)
5429 bfd
*abfd ATTRIBUTE_UNUSED
;
5430 arelent
*cache_ptr ATTRIBUTE_UNUSED
;
5431 Elf_Internal_Rela
*dst ATTRIBUTE_UNUSED
;
5438 _bfd_elf_no_info_to_howto_rel (abfd
, cache_ptr
, dst
)
5441 Elf_Internal_Rel
*dst
;
5447 /* Try to convert a non-ELF reloc into an ELF one. */
5450 _bfd_elf_validate_reloc (abfd
, areloc
)
5454 /* Check whether we really have an ELF howto. */
5456 if ((*areloc
->sym_ptr_ptr
)->the_bfd
->xvec
!= abfd
->xvec
)
5458 bfd_reloc_code_real_type code
;
5459 reloc_howto_type
*howto
;
5461 /* Alien reloc: Try to determine its type to replace it with an
5462 equivalent ELF reloc. */
5464 if (areloc
->howto
->pc_relative
)
5466 switch (areloc
->howto
->bitsize
)
5469 code
= BFD_RELOC_8_PCREL
;
5472 code
= BFD_RELOC_12_PCREL
;
5475 code
= BFD_RELOC_16_PCREL
;
5478 code
= BFD_RELOC_24_PCREL
;
5481 code
= BFD_RELOC_32_PCREL
;
5484 code
= BFD_RELOC_64_PCREL
;
5490 howto
= bfd_reloc_type_lookup (abfd
, code
);
5492 if (areloc
->howto
->pcrel_offset
!= howto
->pcrel_offset
)
5494 if (howto
->pcrel_offset
)
5495 areloc
->addend
+= areloc
->address
;
5497 areloc
->addend
-= areloc
->address
; /* addend is unsigned!! */
5502 switch (areloc
->howto
->bitsize
)
5508 code
= BFD_RELOC_14
;
5511 code
= BFD_RELOC_16
;
5514 code
= BFD_RELOC_26
;
5517 code
= BFD_RELOC_32
;
5520 code
= BFD_RELOC_64
;
5526 howto
= bfd_reloc_type_lookup (abfd
, code
);
5530 areloc
->howto
= howto
;
5538 (*_bfd_error_handler
)
5539 (_("%s: unsupported relocation type %s"),
5540 bfd_archive_filename (abfd
), areloc
->howto
->name
);
5541 bfd_set_error (bfd_error_bad_value
);
5546 _bfd_elf_close_and_cleanup (abfd
)
5549 if (bfd_get_format (abfd
) == bfd_object
)
5551 if (elf_shstrtab (abfd
) != NULL
)
5552 _bfd_stringtab_free (elf_shstrtab (abfd
));
5555 return _bfd_generic_close_and_cleanup (abfd
);
5558 /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY
5559 in the relocation's offset. Thus we cannot allow any sort of sanity
5560 range-checking to interfere. There is nothing else to do in processing
5563 bfd_reloc_status_type
5564 _bfd_elf_rel_vtable_reloc_fn (abfd
, re
, symbol
, data
, is
, obfd
, errmsg
)
5565 bfd
*abfd ATTRIBUTE_UNUSED
;
5566 arelent
*re ATTRIBUTE_UNUSED
;
5567 struct symbol_cache_entry
*symbol ATTRIBUTE_UNUSED
;
5568 PTR data ATTRIBUTE_UNUSED
;
5569 asection
*is ATTRIBUTE_UNUSED
;
5570 bfd
*obfd ATTRIBUTE_UNUSED
;
5571 char **errmsg ATTRIBUTE_UNUSED
;
5573 return bfd_reloc_ok
;
5576 /* Elf core file support. Much of this only works on native
5577 toolchains, since we rely on knowing the
5578 machine-dependent procfs structure in order to pick
5579 out details about the corefile. */
5581 #ifdef HAVE_SYS_PROCFS_H
5582 # include <sys/procfs.h>
5585 /* FIXME: this is kinda wrong, but it's what gdb wants. */
5588 elfcore_make_pid (abfd
)
5591 return ((elf_tdata (abfd
)->core_lwpid
<< 16)
5592 + (elf_tdata (abfd
)->core_pid
));
5595 /* If there isn't a section called NAME, make one, using
5596 data from SECT. Note, this function will generate a
5597 reference to NAME, so you shouldn't deallocate or
5601 elfcore_maybe_make_sect (abfd
, name
, sect
)
5608 if (bfd_get_section_by_name (abfd
, name
) != NULL
)
5611 sect2
= bfd_make_section (abfd
, name
);
5615 sect2
->_raw_size
= sect
->_raw_size
;
5616 sect2
->filepos
= sect
->filepos
;
5617 sect2
->flags
= sect
->flags
;
5618 sect2
->alignment_power
= sect
->alignment_power
;
5622 /* Create a pseudosection containing SIZE bytes at FILEPOS. This
5623 actually creates up to two pseudosections:
5624 - For the single-threaded case, a section named NAME, unless
5625 such a section already exists.
5626 - For the multi-threaded case, a section named "NAME/PID", where
5627 PID is elfcore_make_pid (abfd).
5628 Both pseudosections have identical contents. */
5630 _bfd_elfcore_make_pseudosection (abfd
, name
, size
, filepos
)
5637 char *threaded_name
;
5640 /* Build the section name. */
5642 sprintf (buf
, "%s/%d", name
, elfcore_make_pid (abfd
));
5643 threaded_name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
5644 if (threaded_name
== NULL
)
5646 strcpy (threaded_name
, buf
);
5648 sect
= bfd_make_section (abfd
, threaded_name
);
5651 sect
->_raw_size
= size
;
5652 sect
->filepos
= filepos
;
5653 sect
->flags
= SEC_HAS_CONTENTS
;
5654 sect
->alignment_power
= 2;
5656 return elfcore_maybe_make_sect (abfd
, name
, sect
);
5659 /* prstatus_t exists on:
5661 linux 2.[01] + glibc
5665 #if defined (HAVE_PRSTATUS_T)
5666 static boolean elfcore_grok_prstatus
PARAMS ((bfd
*, Elf_Internal_Note
*));
5669 elfcore_grok_prstatus (abfd
, note
)
5671 Elf_Internal_Note
*note
;
5676 if (note
->descsz
== sizeof (prstatus_t
))
5680 raw_size
= sizeof (prstat
.pr_reg
);
5681 offset
= offsetof (prstatus_t
, pr_reg
);
5682 memcpy (&prstat
, note
->descdata
, sizeof (prstat
));
5684 elf_tdata (abfd
)->core_signal
= prstat
.pr_cursig
;
5685 elf_tdata (abfd
)->core_pid
= prstat
.pr_pid
;
5687 /* pr_who exists on:
5690 pr_who doesn't exist on:
5693 #if defined (HAVE_PRSTATUS_T_PR_WHO)
5694 elf_tdata (abfd
)->core_lwpid
= prstat
.pr_who
;
5697 #if defined (HAVE_PRSTATUS32_T)
5698 else if (note
->descsz
== sizeof (prstatus32_t
))
5700 /* 64-bit host, 32-bit corefile */
5701 prstatus32_t prstat
;
5703 raw_size
= sizeof (prstat
.pr_reg
);
5704 offset
= offsetof (prstatus32_t
, pr_reg
);
5705 memcpy (&prstat
, note
->descdata
, sizeof (prstat
));
5707 elf_tdata (abfd
)->core_signal
= prstat
.pr_cursig
;
5708 elf_tdata (abfd
)->core_pid
= prstat
.pr_pid
;
5710 /* pr_who exists on:
5713 pr_who doesn't exist on:
5716 #if defined (HAVE_PRSTATUS32_T_PR_WHO)
5717 elf_tdata (abfd
)->core_lwpid
= prstat
.pr_who
;
5720 #endif /* HAVE_PRSTATUS32_T */
5723 /* Fail - we don't know how to handle any other
5724 note size (ie. data object type). */
5728 /* Make a ".reg/999" section and a ".reg" section. */
5729 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
5730 raw_size
, note
->descpos
+ offset
);
5732 #endif /* defined (HAVE_PRSTATUS_T) */
5734 /* Create a pseudosection containing the exact contents of NOTE. */
5736 elfcore_make_note_pseudosection (abfd
, name
, note
)
5739 Elf_Internal_Note
*note
;
5741 return _bfd_elfcore_make_pseudosection (abfd
, name
,
5742 note
->descsz
, note
->descpos
);
5745 /* There isn't a consistent prfpregset_t across platforms,
5746 but it doesn't matter, because we don't have to pick this
5747 data structure apart. */
5750 elfcore_grok_prfpreg (abfd
, note
)
5752 Elf_Internal_Note
*note
;
5754 return elfcore_make_note_pseudosection (abfd
, ".reg2", note
);
5757 /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note
5758 type of 5 (NT_PRXFPREG). Just include the whole note's contents
5762 elfcore_grok_prxfpreg (abfd
, note
)
5764 Elf_Internal_Note
*note
;
5766 return elfcore_make_note_pseudosection (abfd
, ".reg-xfp", note
);
5769 #if defined (HAVE_PRPSINFO_T)
5770 typedef prpsinfo_t elfcore_psinfo_t
;
5771 #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */
5772 typedef prpsinfo32_t elfcore_psinfo32_t
;
5776 #if defined (HAVE_PSINFO_T)
5777 typedef psinfo_t elfcore_psinfo_t
;
5778 #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */
5779 typedef psinfo32_t elfcore_psinfo32_t
;
5783 /* return a malloc'ed copy of a string at START which is at
5784 most MAX bytes long, possibly without a terminating '\0'.
5785 the copy will always have a terminating '\0'. */
5788 _bfd_elfcore_strndup (abfd
, start
, max
)
5794 char *end
= memchr (start
, '\0', max
);
5802 dups
= bfd_alloc (abfd
, (bfd_size_type
) len
+ 1);
5806 memcpy (dups
, start
, len
);
5812 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
5813 static boolean elfcore_grok_psinfo
PARAMS ((bfd
*, Elf_Internal_Note
*));
5816 elfcore_grok_psinfo (abfd
, note
)
5818 Elf_Internal_Note
*note
;
5820 if (note
->descsz
== sizeof (elfcore_psinfo_t
))
5822 elfcore_psinfo_t psinfo
;
5824 memcpy (&psinfo
, note
->descdata
, sizeof (psinfo
));
5826 elf_tdata (abfd
)->core_program
5827 = _bfd_elfcore_strndup (abfd
, psinfo
.pr_fname
,
5828 sizeof (psinfo
.pr_fname
));
5830 elf_tdata (abfd
)->core_command
5831 = _bfd_elfcore_strndup (abfd
, psinfo
.pr_psargs
,
5832 sizeof (psinfo
.pr_psargs
));
5834 #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T)
5835 else if (note
->descsz
== sizeof (elfcore_psinfo32_t
))
5837 /* 64-bit host, 32-bit corefile */
5838 elfcore_psinfo32_t psinfo
;
5840 memcpy (&psinfo
, note
->descdata
, sizeof (psinfo
));
5842 elf_tdata (abfd
)->core_program
5843 = _bfd_elfcore_strndup (abfd
, psinfo
.pr_fname
,
5844 sizeof (psinfo
.pr_fname
));
5846 elf_tdata (abfd
)->core_command
5847 = _bfd_elfcore_strndup (abfd
, psinfo
.pr_psargs
,
5848 sizeof (psinfo
.pr_psargs
));
5854 /* Fail - we don't know how to handle any other
5855 note size (ie. data object type). */
5859 /* Note that for some reason, a spurious space is tacked
5860 onto the end of the args in some (at least one anyway)
5861 implementations, so strip it off if it exists. */
5864 char *command
= elf_tdata (abfd
)->core_command
;
5865 int n
= strlen (command
);
5867 if (0 < n
&& command
[n
- 1] == ' ')
5868 command
[n
- 1] = '\0';
5873 #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */
5875 #if defined (HAVE_PSTATUS_T)
5877 elfcore_grok_pstatus (abfd
, note
)
5879 Elf_Internal_Note
*note
;
5881 if (note
->descsz
== sizeof (pstatus_t
)
5882 #if defined (HAVE_PXSTATUS_T)
5883 || note
->descsz
== sizeof (pxstatus_t
)
5889 memcpy (&pstat
, note
->descdata
, sizeof (pstat
));
5891 elf_tdata (abfd
)->core_pid
= pstat
.pr_pid
;
5893 #if defined (HAVE_PSTATUS32_T)
5894 else if (note
->descsz
== sizeof (pstatus32_t
))
5896 /* 64-bit host, 32-bit corefile */
5899 memcpy (&pstat
, note
->descdata
, sizeof (pstat
));
5901 elf_tdata (abfd
)->core_pid
= pstat
.pr_pid
;
5904 /* Could grab some more details from the "representative"
5905 lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an
5906 NT_LWPSTATUS note, presumably. */
5910 #endif /* defined (HAVE_PSTATUS_T) */
5912 #if defined (HAVE_LWPSTATUS_T)
5914 elfcore_grok_lwpstatus (abfd
, note
)
5916 Elf_Internal_Note
*note
;
5918 lwpstatus_t lwpstat
;
5923 if (note
->descsz
!= sizeof (lwpstat
)
5924 #if defined (HAVE_LWPXSTATUS_T)
5925 && note
->descsz
!= sizeof (lwpxstatus_t
)
5930 memcpy (&lwpstat
, note
->descdata
, sizeof (lwpstat
));
5932 elf_tdata (abfd
)->core_lwpid
= lwpstat
.pr_lwpid
;
5933 elf_tdata (abfd
)->core_signal
= lwpstat
.pr_cursig
;
5935 /* Make a ".reg/999" section. */
5937 sprintf (buf
, ".reg/%d", elfcore_make_pid (abfd
));
5938 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
5943 sect
= bfd_make_section (abfd
, name
);
5947 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
5948 sect
->_raw_size
= sizeof (lwpstat
.pr_context
.uc_mcontext
.gregs
);
5949 sect
->filepos
= note
->descpos
5950 + offsetof (lwpstatus_t
, pr_context
.uc_mcontext
.gregs
);
5953 #if defined (HAVE_LWPSTATUS_T_PR_REG)
5954 sect
->_raw_size
= sizeof (lwpstat
.pr_reg
);
5955 sect
->filepos
= note
->descpos
+ offsetof (lwpstatus_t
, pr_reg
);
5958 sect
->flags
= SEC_HAS_CONTENTS
;
5959 sect
->alignment_power
= 2;
5961 if (!elfcore_maybe_make_sect (abfd
, ".reg", sect
))
5964 /* Make a ".reg2/999" section */
5966 sprintf (buf
, ".reg2/%d", elfcore_make_pid (abfd
));
5967 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
5972 sect
= bfd_make_section (abfd
, name
);
5976 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
5977 sect
->_raw_size
= sizeof (lwpstat
.pr_context
.uc_mcontext
.fpregs
);
5978 sect
->filepos
= note
->descpos
5979 + offsetof (lwpstatus_t
, pr_context
.uc_mcontext
.fpregs
);
5982 #if defined (HAVE_LWPSTATUS_T_PR_FPREG)
5983 sect
->_raw_size
= sizeof (lwpstat
.pr_fpreg
);
5984 sect
->filepos
= note
->descpos
+ offsetof (lwpstatus_t
, pr_fpreg
);
5987 sect
->flags
= SEC_HAS_CONTENTS
;
5988 sect
->alignment_power
= 2;
5990 return elfcore_maybe_make_sect (abfd
, ".reg2", sect
);
5992 #endif /* defined (HAVE_LWPSTATUS_T) */
5994 #if defined (HAVE_WIN32_PSTATUS_T)
5996 elfcore_grok_win32pstatus (abfd
, note
)
5998 Elf_Internal_Note
*note
;
6003 win32_pstatus_t pstatus
;
6005 if (note
->descsz
< sizeof (pstatus
))
6008 memcpy (&pstatus
, note
->descdata
, note
->descsz
);
6010 switch (pstatus
.data_type
)
6012 case NOTE_INFO_PROCESS
:
6013 /* FIXME: need to add ->core_command. */
6014 elf_tdata (abfd
)->core_signal
= pstatus
.data
.process_info
.signal
;
6015 elf_tdata (abfd
)->core_pid
= pstatus
.data
.process_info
.pid
;
6018 case NOTE_INFO_THREAD
:
6019 /* Make a ".reg/999" section. */
6020 sprintf (buf
, ".reg/%d", pstatus
.data
.thread_info
.tid
);
6022 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
6028 sect
= bfd_make_section (abfd
, name
);
6032 sect
->_raw_size
= sizeof (pstatus
.data
.thread_info
.thread_context
);
6033 sect
->filepos
= (note
->descpos
6034 + offsetof (struct win32_pstatus
,
6035 data
.thread_info
.thread_context
));
6036 sect
->flags
= SEC_HAS_CONTENTS
;
6037 sect
->alignment_power
= 2;
6039 if (pstatus
.data
.thread_info
.is_active_thread
)
6040 if (! elfcore_maybe_make_sect (abfd
, ".reg", sect
))
6044 case NOTE_INFO_MODULE
:
6045 /* Make a ".module/xxxxxxxx" section. */
6046 sprintf (buf
, ".module/%08x", pstatus
.data
.module_info
.base_address
);
6048 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
6054 sect
= bfd_make_section (abfd
, name
);
6059 sect
->_raw_size
= note
->descsz
;
6060 sect
->filepos
= note
->descpos
;
6061 sect
->flags
= SEC_HAS_CONTENTS
;
6062 sect
->alignment_power
= 2;
6071 #endif /* HAVE_WIN32_PSTATUS_T */
6074 elfcore_grok_note (abfd
, note
)
6076 Elf_Internal_Note
*note
;
6078 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
6086 if (bed
->elf_backend_grok_prstatus
)
6087 if ((*bed
->elf_backend_grok_prstatus
) (abfd
, note
))
6089 #if defined (HAVE_PRSTATUS_T)
6090 return elfcore_grok_prstatus (abfd
, note
);
6095 #if defined (HAVE_PSTATUS_T)
6097 return elfcore_grok_pstatus (abfd
, note
);
6100 #if defined (HAVE_LWPSTATUS_T)
6102 return elfcore_grok_lwpstatus (abfd
, note
);
6105 case NT_FPREGSET
: /* FIXME: rename to NT_PRFPREG */
6106 return elfcore_grok_prfpreg (abfd
, note
);
6108 #if defined (HAVE_WIN32_PSTATUS_T)
6109 case NT_WIN32PSTATUS
:
6110 return elfcore_grok_win32pstatus (abfd
, note
);
6113 case NT_PRXFPREG
: /* Linux SSE extension */
6114 if (note
->namesz
== 5
6115 && ! strcmp (note
->namedata
, "LINUX"))
6116 return elfcore_grok_prxfpreg (abfd
, note
);
6122 if (bed
->elf_backend_grok_psinfo
)
6123 if ((*bed
->elf_backend_grok_psinfo
) (abfd
, note
))
6125 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
6126 return elfcore_grok_psinfo (abfd
, note
);
6134 elfcore_read_notes (abfd
, offset
, size
)
6145 if (bfd_seek (abfd
, offset
, SEEK_SET
) != 0)
6148 buf
= bfd_malloc (size
);
6152 if (bfd_bread (buf
, size
, abfd
) != size
)
6160 while (p
< buf
+ size
)
6162 /* FIXME: bad alignment assumption. */
6163 Elf_External_Note
*xnp
= (Elf_External_Note
*) p
;
6164 Elf_Internal_Note in
;
6166 in
.type
= H_GET_32 (abfd
, xnp
->type
);
6168 in
.namesz
= H_GET_32 (abfd
, xnp
->namesz
);
6169 in
.namedata
= xnp
->name
;
6171 in
.descsz
= H_GET_32 (abfd
, xnp
->descsz
);
6172 in
.descdata
= in
.namedata
+ BFD_ALIGN (in
.namesz
, 4);
6173 in
.descpos
= offset
+ (in
.descdata
- buf
);
6175 if (! elfcore_grok_note (abfd
, &in
))
6178 p
= in
.descdata
+ BFD_ALIGN (in
.descsz
, 4);
6185 /* Providing external access to the ELF program header table. */
6187 /* Return an upper bound on the number of bytes required to store a
6188 copy of ABFD's program header table entries. Return -1 if an error
6189 occurs; bfd_get_error will return an appropriate code. */
6192 bfd_get_elf_phdr_upper_bound (abfd
)
6195 if (abfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
6197 bfd_set_error (bfd_error_wrong_format
);
6201 return elf_elfheader (abfd
)->e_phnum
* sizeof (Elf_Internal_Phdr
);
6204 /* Copy ABFD's program header table entries to *PHDRS. The entries
6205 will be stored as an array of Elf_Internal_Phdr structures, as
6206 defined in include/elf/internal.h. To find out how large the
6207 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
6209 Return the number of program header table entries read, or -1 if an
6210 error occurs; bfd_get_error will return an appropriate code. */
6213 bfd_get_elf_phdrs (abfd
, phdrs
)
6219 if (abfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
6221 bfd_set_error (bfd_error_wrong_format
);
6225 num_phdrs
= elf_elfheader (abfd
)->e_phnum
;
6226 memcpy (phdrs
, elf_tdata (abfd
)->phdr
,
6227 num_phdrs
* sizeof (Elf_Internal_Phdr
));
6233 _bfd_elf_sprintf_vma (abfd
, buf
, value
)
6234 bfd
*abfd ATTRIBUTE_UNUSED
;
6239 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
6241 i_ehdrp
= elf_elfheader (abfd
);
6242 if (i_ehdrp
== NULL
)
6243 sprintf_vma (buf
, value
);
6246 if (i_ehdrp
->e_ident
[EI_CLASS
] == ELFCLASS64
)
6248 #if BFD_HOST_64BIT_LONG
6249 sprintf (buf
, "%016lx", value
);
6251 sprintf (buf
, "%08lx%08lx", _bfd_int64_high (value
),
6252 _bfd_int64_low (value
));
6256 sprintf (buf
, "%08lx", (unsigned long) (value
& 0xffffffff));
6259 sprintf_vma (buf
, value
);
6264 _bfd_elf_fprintf_vma (abfd
, stream
, value
)
6265 bfd
*abfd ATTRIBUTE_UNUSED
;
6270 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
6272 i_ehdrp
= elf_elfheader (abfd
);
6273 if (i_ehdrp
== NULL
)
6274 fprintf_vma ((FILE *) stream
, value
);
6277 if (i_ehdrp
->e_ident
[EI_CLASS
] == ELFCLASS64
)
6279 #if BFD_HOST_64BIT_LONG
6280 fprintf ((FILE *) stream
, "%016lx", value
);
6282 fprintf ((FILE *) stream
, "%08lx%08lx",
6283 _bfd_int64_high (value
), _bfd_int64_low (value
));
6287 fprintf ((FILE *) stream
, "%08lx",
6288 (unsigned long) (value
& 0xffffffff));
6291 fprintf_vma ((FILE *) stream
, value
);
6295 enum elf_reloc_type_class
6296 _bfd_elf_reloc_type_class (rela
)
6297 const Elf_Internal_Rela
*rela ATTRIBUTE_UNUSED
;
6299 return reloc_class_normal
;