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_elf_strtab_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_elf_strtab_add (elf_shstrtab (abfd
),
1981 asect
->name
, false);
1982 if (this_hdr
->sh_name
== (unsigned long) -1)
1988 this_hdr
->sh_flags
= 0;
1990 if ((asect
->flags
& SEC_ALLOC
) != 0
1991 || asect
->user_set_vma
)
1992 this_hdr
->sh_addr
= asect
->vma
;
1994 this_hdr
->sh_addr
= 0;
1996 this_hdr
->sh_offset
= 0;
1997 this_hdr
->sh_size
= asect
->_raw_size
;
1998 this_hdr
->sh_link
= 0;
1999 this_hdr
->sh_addralign
= 1 << asect
->alignment_power
;
2000 /* The sh_entsize and sh_info fields may have been set already by
2001 copy_private_section_data. */
2003 this_hdr
->bfd_section
= asect
;
2004 this_hdr
->contents
= NULL
;
2006 /* FIXME: This should not be based on section names. */
2007 if (strcmp (asect
->name
, ".dynstr") == 0)
2008 this_hdr
->sh_type
= SHT_STRTAB
;
2009 else if (strcmp (asect
->name
, ".hash") == 0)
2011 this_hdr
->sh_type
= SHT_HASH
;
2012 this_hdr
->sh_entsize
= bed
->s
->sizeof_hash_entry
;
2014 else if (strcmp (asect
->name
, ".dynsym") == 0)
2016 this_hdr
->sh_type
= SHT_DYNSYM
;
2017 this_hdr
->sh_entsize
= bed
->s
->sizeof_sym
;
2019 else if (strcmp (asect
->name
, ".dynamic") == 0)
2021 this_hdr
->sh_type
= SHT_DYNAMIC
;
2022 this_hdr
->sh_entsize
= bed
->s
->sizeof_dyn
;
2024 else if (strncmp (asect
->name
, ".rela", 5) == 0
2025 && get_elf_backend_data (abfd
)->may_use_rela_p
)
2027 this_hdr
->sh_type
= SHT_RELA
;
2028 this_hdr
->sh_entsize
= bed
->s
->sizeof_rela
;
2030 else if (strncmp (asect
->name
, ".rel", 4) == 0
2031 && get_elf_backend_data (abfd
)->may_use_rel_p
)
2033 this_hdr
->sh_type
= SHT_REL
;
2034 this_hdr
->sh_entsize
= bed
->s
->sizeof_rel
;
2036 else if (strncmp (asect
->name
, ".note", 5) == 0)
2037 this_hdr
->sh_type
= SHT_NOTE
;
2038 else if (strncmp (asect
->name
, ".stab", 5) == 0
2039 && strcmp (asect
->name
+ strlen (asect
->name
) - 3, "str") == 0)
2040 this_hdr
->sh_type
= SHT_STRTAB
;
2041 else if (strcmp (asect
->name
, ".gnu.version") == 0)
2043 this_hdr
->sh_type
= SHT_GNU_versym
;
2044 this_hdr
->sh_entsize
= sizeof (Elf_External_Versym
);
2046 else if (strcmp (asect
->name
, ".gnu.version_d") == 0)
2048 this_hdr
->sh_type
= SHT_GNU_verdef
;
2049 this_hdr
->sh_entsize
= 0;
2050 /* objcopy or strip will copy over sh_info, but may not set
2051 cverdefs. The linker will set cverdefs, but sh_info will be
2053 if (this_hdr
->sh_info
== 0)
2054 this_hdr
->sh_info
= elf_tdata (abfd
)->cverdefs
;
2056 BFD_ASSERT (elf_tdata (abfd
)->cverdefs
== 0
2057 || this_hdr
->sh_info
== elf_tdata (abfd
)->cverdefs
);
2059 else if (strcmp (asect
->name
, ".gnu.version_r") == 0)
2061 this_hdr
->sh_type
= SHT_GNU_verneed
;
2062 this_hdr
->sh_entsize
= 0;
2063 /* objcopy or strip will copy over sh_info, but may not set
2064 cverrefs. The linker will set cverrefs, but sh_info will be
2066 if (this_hdr
->sh_info
== 0)
2067 this_hdr
->sh_info
= elf_tdata (abfd
)->cverrefs
;
2069 BFD_ASSERT (elf_tdata (abfd
)->cverrefs
== 0
2070 || this_hdr
->sh_info
== elf_tdata (abfd
)->cverrefs
);
2072 else if ((asect
->flags
& SEC_GROUP
) != 0)
2074 this_hdr
->sh_type
= SHT_GROUP
;
2075 this_hdr
->sh_entsize
= 4;
2077 else if ((asect
->flags
& SEC_ALLOC
) != 0
2078 && ((asect
->flags
& (SEC_LOAD
| SEC_HAS_CONTENTS
)) == 0))
2079 this_hdr
->sh_type
= SHT_NOBITS
;
2081 this_hdr
->sh_type
= SHT_PROGBITS
;
2083 if ((asect
->flags
& SEC_ALLOC
) != 0)
2084 this_hdr
->sh_flags
|= SHF_ALLOC
;
2085 if ((asect
->flags
& SEC_READONLY
) == 0)
2086 this_hdr
->sh_flags
|= SHF_WRITE
;
2087 if ((asect
->flags
& SEC_CODE
) != 0)
2088 this_hdr
->sh_flags
|= SHF_EXECINSTR
;
2089 if ((asect
->flags
& SEC_MERGE
) != 0)
2091 this_hdr
->sh_flags
|= SHF_MERGE
;
2092 this_hdr
->sh_entsize
= asect
->entsize
;
2093 if ((asect
->flags
& SEC_STRINGS
) != 0)
2094 this_hdr
->sh_flags
|= SHF_STRINGS
;
2096 if (elf_group_name (asect
) != NULL
)
2097 this_hdr
->sh_flags
|= SHF_GROUP
;
2099 /* Check for processor-specific section types. */
2100 if (bed
->elf_backend_fake_sections
)
2101 (*bed
->elf_backend_fake_sections
) (abfd
, this_hdr
, asect
);
2103 /* If the section has relocs, set up a section header for the
2104 SHT_REL[A] section. If two relocation sections are required for
2105 this section, it is up to the processor-specific back-end to
2106 create the other. */
2107 if ((asect
->flags
& SEC_RELOC
) != 0
2108 && !_bfd_elf_init_reloc_shdr (abfd
,
2109 &elf_section_data (asect
)->rel_hdr
,
2111 elf_section_data (asect
)->use_rela_p
))
2115 /* Fill in the contents of a SHT_GROUP section. */
2118 set_group_contents (abfd
, sec
, failedptrarg
)
2121 PTR failedptrarg ATTRIBUTE_UNUSED
;
2123 boolean
*failedptr
= (boolean
*) failedptrarg
;
2124 unsigned long symindx
;
2127 struct bfd_link_order
*l
;
2129 if (elf_section_data (sec
)->this_hdr
.sh_type
!= SHT_GROUP
2133 /* If called from the assembler, swap_out_syms will have set up
2134 elf_section_syms; If called for "ld -r", the symbols won't yet
2135 be mapped, so emulate elf_bfd_final_link. */
2136 if (elf_section_syms (abfd
) != NULL
)
2137 symindx
= elf_section_syms (abfd
)[sec
->index
]->udata
.i
;
2139 symindx
= elf_section_data (sec
)->this_idx
;
2140 elf_section_data (sec
)->this_hdr
.sh_info
= symindx
;
2142 /* Nor will the contents be allocated for "ld -r". */
2143 if (sec
->contents
== NULL
)
2145 sec
->contents
= bfd_alloc (abfd
, sec
->_raw_size
);
2146 if (sec
->contents
== NULL
)
2153 loc
= sec
->contents
+ sec
->_raw_size
;
2155 /* Get the pointer to the first section in the group that we
2156 squirreled away here. */
2157 elt
= elf_next_in_group (sec
);
2159 /* First element is a flag word. Rest of section is elf section
2160 indices for all the sections of the group. Write them backwards
2161 just to keep the group in the same order as given in .section
2162 directives, not that it matters. */
2166 H_PUT_32 (abfd
, elf_section_data (elt
)->this_idx
, loc
);
2167 elt
= elf_next_in_group (elt
);
2170 /* If this is a relocatable link, then the above did nothing because
2171 SEC is the output section. Look through the input sections
2173 for (l
= sec
->link_order_head
; l
!= NULL
; l
= l
->next
)
2174 if (l
->type
== bfd_indirect_link_order
2175 && (elt
= elf_next_in_group (l
->u
.indirect
.section
)) != NULL
)
2180 elf_section_data (elt
->output_section
)->this_idx
, loc
);
2181 elt
= elf_next_in_group (elt
);
2182 /* During a relocatable link, the lists are circular. */
2184 while (elt
!= elf_next_in_group (l
->u
.indirect
.section
));
2187 H_PUT_32 (abfd
, 0, loc
);
2189 BFD_ASSERT (loc
== sec
->contents
);
2192 /* Assign all ELF section numbers. The dummy first section is handled here
2193 too. The link/info pointers for the standard section types are filled
2194 in here too, while we're at it. */
2197 assign_section_numbers (abfd
)
2200 struct elf_obj_tdata
*t
= elf_tdata (abfd
);
2202 unsigned int section_number
, secn
;
2203 Elf_Internal_Shdr
**i_shdrp
;
2208 _bfd_elf_strtab_clear_all_refs (elf_shstrtab (abfd
));
2210 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
2212 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
2214 d
->this_idx
= section_number
++;
2215 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), d
->this_hdr
.sh_name
);
2216 if ((sec
->flags
& SEC_RELOC
) == 0)
2220 d
->rel_idx
= section_number
++;
2221 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), d
->rel_hdr
.sh_name
);
2226 d
->rel_idx2
= section_number
++;
2227 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), d
->rel_hdr2
->sh_name
);
2233 t
->shstrtab_section
= section_number
++;
2234 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), t
->shstrtab_hdr
.sh_name
);
2235 elf_elfheader (abfd
)->e_shstrndx
= t
->shstrtab_section
;
2237 if (bfd_get_symcount (abfd
) > 0)
2239 t
->symtab_section
= section_number
++;
2240 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), t
->symtab_hdr
.sh_name
);
2241 t
->strtab_section
= section_number
++;
2242 _bfd_elf_strtab_addref (elf_shstrtab (abfd
), t
->strtab_hdr
.sh_name
);
2245 _bfd_elf_strtab_finalize (elf_shstrtab (abfd
));
2246 t
->shstrtab_hdr
.sh_size
= _bfd_elf_strtab_size (elf_shstrtab (abfd
));
2247 elf_elfheader (abfd
)->e_shnum
= section_number
;
2249 /* Set up the list of section header pointers, in agreement with the
2251 amt
= section_number
* sizeof (Elf_Internal_Shdr
*);
2252 i_shdrp
= (Elf_Internal_Shdr
**) bfd_alloc (abfd
, amt
);
2253 if (i_shdrp
== NULL
)
2256 amt
= sizeof (Elf_Internal_Shdr
);
2257 i_shdrp
[0] = (Elf_Internal_Shdr
*) bfd_alloc (abfd
, amt
);
2258 if (i_shdrp
[0] == NULL
)
2260 bfd_release (abfd
, i_shdrp
);
2263 memset (i_shdrp
[0], 0, sizeof (Elf_Internal_Shdr
));
2265 elf_elfsections (abfd
) = i_shdrp
;
2267 i_shdrp
[t
->shstrtab_section
] = &t
->shstrtab_hdr
;
2268 if (bfd_get_symcount (abfd
) > 0)
2270 i_shdrp
[t
->symtab_section
] = &t
->symtab_hdr
;
2271 i_shdrp
[t
->strtab_section
] = &t
->strtab_hdr
;
2272 t
->symtab_hdr
.sh_link
= t
->strtab_section
;
2274 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
2276 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
2280 i_shdrp
[d
->this_idx
] = &d
->this_hdr
;
2281 if (d
->rel_idx
!= 0)
2282 i_shdrp
[d
->rel_idx
] = &d
->rel_hdr
;
2283 if (d
->rel_idx2
!= 0)
2284 i_shdrp
[d
->rel_idx2
] = d
->rel_hdr2
;
2286 /* Fill in the sh_link and sh_info fields while we're at it. */
2288 /* sh_link of a reloc section is the section index of the symbol
2289 table. sh_info is the section index of the section to which
2290 the relocation entries apply. */
2291 if (d
->rel_idx
!= 0)
2293 d
->rel_hdr
.sh_link
= t
->symtab_section
;
2294 d
->rel_hdr
.sh_info
= d
->this_idx
;
2296 if (d
->rel_idx2
!= 0)
2298 d
->rel_hdr2
->sh_link
= t
->symtab_section
;
2299 d
->rel_hdr2
->sh_info
= d
->this_idx
;
2302 switch (d
->this_hdr
.sh_type
)
2306 /* A reloc section which we are treating as a normal BFD
2307 section. sh_link is the section index of the symbol
2308 table. sh_info is the section index of the section to
2309 which the relocation entries apply. We assume that an
2310 allocated reloc section uses the dynamic symbol table.
2311 FIXME: How can we be sure? */
2312 s
= bfd_get_section_by_name (abfd
, ".dynsym");
2314 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
2316 /* We look up the section the relocs apply to by name. */
2318 if (d
->this_hdr
.sh_type
== SHT_REL
)
2322 s
= bfd_get_section_by_name (abfd
, name
);
2324 d
->this_hdr
.sh_info
= elf_section_data (s
)->this_idx
;
2328 /* We assume that a section named .stab*str is a stabs
2329 string section. We look for a section with the same name
2330 but without the trailing ``str'', and set its sh_link
2331 field to point to this section. */
2332 if (strncmp (sec
->name
, ".stab", sizeof ".stab" - 1) == 0
2333 && strcmp (sec
->name
+ strlen (sec
->name
) - 3, "str") == 0)
2338 len
= strlen (sec
->name
);
2339 alc
= (char *) bfd_malloc ((bfd_size_type
) len
- 2);
2342 strncpy (alc
, sec
->name
, len
- 3);
2343 alc
[len
- 3] = '\0';
2344 s
= bfd_get_section_by_name (abfd
, alc
);
2348 elf_section_data (s
)->this_hdr
.sh_link
= d
->this_idx
;
2350 /* This is a .stab section. */
2351 elf_section_data (s
)->this_hdr
.sh_entsize
=
2352 4 + 2 * bfd_get_arch_size (abfd
) / 8;
2359 case SHT_GNU_verneed
:
2360 case SHT_GNU_verdef
:
2361 /* sh_link is the section header index of the string table
2362 used for the dynamic entries, or the symbol table, or the
2364 s
= bfd_get_section_by_name (abfd
, ".dynstr");
2366 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
2370 case SHT_GNU_versym
:
2371 /* sh_link is the section header index of the symbol table
2372 this hash table or version table is for. */
2373 s
= bfd_get_section_by_name (abfd
, ".dynsym");
2375 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
2379 d
->this_hdr
.sh_link
= t
->symtab_section
;
2383 for (secn
= 1; secn
< section_number
; ++secn
)
2384 i_shdrp
[secn
]->sh_name
= _bfd_elf_strtab_offset (elf_shstrtab (abfd
),
2385 i_shdrp
[secn
]->sh_name
);
2390 /* Map symbol from it's internal number to the external number, moving
2391 all local symbols to be at the head of the list. */
2394 sym_is_global (abfd
, sym
)
2398 /* If the backend has a special mapping, use it. */
2399 if (get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
2400 return ((*get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
2403 return ((sym
->flags
& (BSF_GLOBAL
| BSF_WEAK
)) != 0
2404 || bfd_is_und_section (bfd_get_section (sym
))
2405 || bfd_is_com_section (bfd_get_section (sym
)));
2409 elf_map_symbols (abfd
)
2412 unsigned int symcount
= bfd_get_symcount (abfd
);
2413 asymbol
**syms
= bfd_get_outsymbols (abfd
);
2414 asymbol
**sect_syms
;
2415 unsigned int num_locals
= 0;
2416 unsigned int num_globals
= 0;
2417 unsigned int num_locals2
= 0;
2418 unsigned int num_globals2
= 0;
2426 fprintf (stderr
, "elf_map_symbols\n");
2430 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2432 if (max_index
< asect
->index
)
2433 max_index
= asect
->index
;
2437 amt
= max_index
* sizeof (asymbol
*);
2438 sect_syms
= (asymbol
**) bfd_zalloc (abfd
, amt
);
2439 if (sect_syms
== NULL
)
2441 elf_section_syms (abfd
) = sect_syms
;
2442 elf_num_section_syms (abfd
) = max_index
;
2444 /* Init sect_syms entries for any section symbols we have already
2445 decided to output. */
2446 for (idx
= 0; idx
< symcount
; idx
++)
2448 asymbol
*sym
= syms
[idx
];
2450 if ((sym
->flags
& BSF_SECTION_SYM
) != 0
2457 if (sec
->owner
!= NULL
)
2459 if (sec
->owner
!= abfd
)
2461 if (sec
->output_offset
!= 0)
2464 sec
= sec
->output_section
;
2466 /* Empty sections in the input files may have had a
2467 section symbol created for them. (See the comment
2468 near the end of _bfd_generic_link_output_symbols in
2469 linker.c). If the linker script discards such
2470 sections then we will reach this point. Since we know
2471 that we cannot avoid this case, we detect it and skip
2472 the abort and the assignment to the sect_syms array.
2473 To reproduce this particular case try running the
2474 linker testsuite test ld-scripts/weak.exp for an ELF
2475 port that uses the generic linker. */
2476 if (sec
->owner
== NULL
)
2479 BFD_ASSERT (sec
->owner
== abfd
);
2481 sect_syms
[sec
->index
] = syms
[idx
];
2486 /* Classify all of the symbols. */
2487 for (idx
= 0; idx
< symcount
; idx
++)
2489 if (!sym_is_global (abfd
, syms
[idx
]))
2495 /* We will be adding a section symbol for each BFD section. Most normal
2496 sections will already have a section symbol in outsymbols, but
2497 eg. SHT_GROUP sections will not, and we need the section symbol mapped
2498 at least in that case. */
2499 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2501 if (sect_syms
[asect
->index
] == NULL
)
2503 if (!sym_is_global (abfd
, asect
->symbol
))
2510 /* Now sort the symbols so the local symbols are first. */
2511 amt
= (num_locals
+ num_globals
) * sizeof (asymbol
*);
2512 new_syms
= (asymbol
**) bfd_alloc (abfd
, amt
);
2514 if (new_syms
== NULL
)
2517 for (idx
= 0; idx
< symcount
; idx
++)
2519 asymbol
*sym
= syms
[idx
];
2522 if (!sym_is_global (abfd
, sym
))
2525 i
= num_locals
+ num_globals2
++;
2527 sym
->udata
.i
= i
+ 1;
2529 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2531 if (sect_syms
[asect
->index
] == NULL
)
2533 asymbol
*sym
= asect
->symbol
;
2536 sect_syms
[asect
->index
] = sym
;
2537 if (!sym_is_global (abfd
, sym
))
2540 i
= num_locals
+ num_globals2
++;
2542 sym
->udata
.i
= i
+ 1;
2546 bfd_set_symtab (abfd
, new_syms
, num_locals
+ num_globals
);
2548 elf_num_locals (abfd
) = num_locals
;
2549 elf_num_globals (abfd
) = num_globals
;
2553 /* Align to the maximum file alignment that could be required for any
2554 ELF data structure. */
2556 static INLINE file_ptr align_file_position
PARAMS ((file_ptr
, int));
2557 static INLINE file_ptr
2558 align_file_position (off
, align
)
2562 return (off
+ align
- 1) & ~(align
- 1);
2565 /* Assign a file position to a section, optionally aligning to the
2566 required section alignment. */
2569 _bfd_elf_assign_file_position_for_section (i_shdrp
, offset
, align
)
2570 Elf_Internal_Shdr
*i_shdrp
;
2578 al
= i_shdrp
->sh_addralign
;
2580 offset
= BFD_ALIGN (offset
, al
);
2582 i_shdrp
->sh_offset
= offset
;
2583 if (i_shdrp
->bfd_section
!= NULL
)
2584 i_shdrp
->bfd_section
->filepos
= offset
;
2585 if (i_shdrp
->sh_type
!= SHT_NOBITS
)
2586 offset
+= i_shdrp
->sh_size
;
2590 /* Compute the file positions we are going to put the sections at, and
2591 otherwise prepare to begin writing out the ELF file. If LINK_INFO
2592 is not NULL, this is being called by the ELF backend linker. */
2595 _bfd_elf_compute_section_file_positions (abfd
, link_info
)
2597 struct bfd_link_info
*link_info
;
2599 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2601 struct bfd_strtab_hash
*strtab
;
2602 Elf_Internal_Shdr
*shstrtab_hdr
;
2604 if (abfd
->output_has_begun
)
2607 /* Do any elf backend specific processing first. */
2608 if (bed
->elf_backend_begin_write_processing
)
2609 (*bed
->elf_backend_begin_write_processing
) (abfd
, link_info
);
2611 if (! prep_headers (abfd
))
2614 /* Post process the headers if necessary. */
2615 if (bed
->elf_backend_post_process_headers
)
2616 (*bed
->elf_backend_post_process_headers
) (abfd
, link_info
);
2619 bfd_map_over_sections (abfd
, elf_fake_sections
, &failed
);
2623 if (!assign_section_numbers (abfd
))
2626 /* The backend linker builds symbol table information itself. */
2627 if (link_info
== NULL
&& bfd_get_symcount (abfd
) > 0)
2629 /* Non-zero if doing a relocatable link. */
2630 int relocatable_p
= ! (abfd
->flags
& (EXEC_P
| DYNAMIC
));
2632 if (! swap_out_syms (abfd
, &strtab
, relocatable_p
))
2636 if (link_info
== NULL
|| link_info
->relocateable
)
2638 bfd_map_over_sections (abfd
, set_group_contents
, &failed
);
2643 shstrtab_hdr
= &elf_tdata (abfd
)->shstrtab_hdr
;
2644 /* sh_name was set in prep_headers. */
2645 shstrtab_hdr
->sh_type
= SHT_STRTAB
;
2646 shstrtab_hdr
->sh_flags
= 0;
2647 shstrtab_hdr
->sh_addr
= 0;
2648 shstrtab_hdr
->sh_size
= _bfd_elf_strtab_size (elf_shstrtab (abfd
));
2649 shstrtab_hdr
->sh_entsize
= 0;
2650 shstrtab_hdr
->sh_link
= 0;
2651 shstrtab_hdr
->sh_info
= 0;
2652 /* sh_offset is set in assign_file_positions_except_relocs. */
2653 shstrtab_hdr
->sh_addralign
= 1;
2655 if (!assign_file_positions_except_relocs (abfd
))
2658 if (link_info
== NULL
&& bfd_get_symcount (abfd
) > 0)
2661 Elf_Internal_Shdr
*hdr
;
2663 off
= elf_tdata (abfd
)->next_file_pos
;
2665 hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2666 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
2668 hdr
= &elf_tdata (abfd
)->strtab_hdr
;
2669 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
2671 elf_tdata (abfd
)->next_file_pos
= off
;
2673 /* Now that we know where the .strtab section goes, write it
2675 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
2676 || ! _bfd_stringtab_emit (abfd
, strtab
))
2678 _bfd_stringtab_free (strtab
);
2681 abfd
->output_has_begun
= true;
2686 /* Create a mapping from a set of sections to a program segment. */
2688 static INLINE
struct elf_segment_map
*
2689 make_mapping (abfd
, sections
, from
, to
, phdr
)
2691 asection
**sections
;
2696 struct elf_segment_map
*m
;
2701 amt
= sizeof (struct elf_segment_map
);
2702 amt
+= (to
- from
- 1) * sizeof (asection
*);
2703 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2707 m
->p_type
= PT_LOAD
;
2708 for (i
= from
, hdrpp
= sections
+ from
; i
< to
; i
++, hdrpp
++)
2709 m
->sections
[i
- from
] = *hdrpp
;
2710 m
->count
= to
- from
;
2712 if (from
== 0 && phdr
)
2714 /* Include the headers in the first PT_LOAD segment. */
2715 m
->includes_filehdr
= 1;
2716 m
->includes_phdrs
= 1;
2722 /* Set up a mapping from BFD sections to program segments. */
2725 map_sections_to_segments (abfd
)
2728 asection
**sections
= NULL
;
2732 struct elf_segment_map
*mfirst
;
2733 struct elf_segment_map
**pm
;
2734 struct elf_segment_map
*m
;
2736 unsigned int phdr_index
;
2737 bfd_vma maxpagesize
;
2739 boolean phdr_in_segment
= true;
2744 if (elf_tdata (abfd
)->segment_map
!= NULL
)
2747 if (bfd_count_sections (abfd
) == 0)
2750 /* Select the allocated sections, and sort them. */
2752 amt
= bfd_count_sections (abfd
) * sizeof (asection
*);
2753 sections
= (asection
**) bfd_malloc (amt
);
2754 if (sections
== NULL
)
2758 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
2760 if ((s
->flags
& SEC_ALLOC
) != 0)
2766 BFD_ASSERT (i
<= bfd_count_sections (abfd
));
2769 qsort (sections
, (size_t) count
, sizeof (asection
*), elf_sort_sections
);
2771 /* Build the mapping. */
2776 /* If we have a .interp section, then create a PT_PHDR segment for
2777 the program headers and a PT_INTERP segment for the .interp
2779 s
= bfd_get_section_by_name (abfd
, ".interp");
2780 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
2782 amt
= sizeof (struct elf_segment_map
);
2783 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2787 m
->p_type
= PT_PHDR
;
2788 /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */
2789 m
->p_flags
= PF_R
| PF_X
;
2790 m
->p_flags_valid
= 1;
2791 m
->includes_phdrs
= 1;
2796 amt
= sizeof (struct elf_segment_map
);
2797 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2801 m
->p_type
= PT_INTERP
;
2809 /* Look through the sections. We put sections in the same program
2810 segment when the start of the second section can be placed within
2811 a few bytes of the end of the first section. */
2814 maxpagesize
= get_elf_backend_data (abfd
)->maxpagesize
;
2816 dynsec
= bfd_get_section_by_name (abfd
, ".dynamic");
2818 && (dynsec
->flags
& SEC_LOAD
) == 0)
2821 /* Deal with -Ttext or something similar such that the first section
2822 is not adjacent to the program headers. This is an
2823 approximation, since at this point we don't know exactly how many
2824 program headers we will need. */
2827 bfd_size_type phdr_size
;
2829 phdr_size
= elf_tdata (abfd
)->program_header_size
;
2831 phdr_size
= get_elf_backend_data (abfd
)->s
->sizeof_phdr
;
2832 if ((abfd
->flags
& D_PAGED
) == 0
2833 || sections
[0]->lma
< phdr_size
2834 || sections
[0]->lma
% maxpagesize
< phdr_size
% maxpagesize
)
2835 phdr_in_segment
= false;
2838 for (i
= 0, hdrpp
= sections
; i
< count
; i
++, hdrpp
++)
2841 boolean new_segment
;
2845 /* See if this section and the last one will fit in the same
2848 if (last_hdr
== NULL
)
2850 /* If we don't have a segment yet, then we don't need a new
2851 one (we build the last one after this loop). */
2852 new_segment
= false;
2854 else if (last_hdr
->lma
- last_hdr
->vma
!= hdr
->lma
- hdr
->vma
)
2856 /* If this section has a different relation between the
2857 virtual address and the load address, then we need a new
2861 else if (BFD_ALIGN (last_hdr
->lma
+ last_hdr
->_raw_size
, maxpagesize
)
2862 < BFD_ALIGN (hdr
->lma
, maxpagesize
))
2864 /* If putting this section in this segment would force us to
2865 skip a page in the segment, then we need a new segment. */
2868 else if ((last_hdr
->flags
& SEC_LOAD
) == 0
2869 && (hdr
->flags
& SEC_LOAD
) != 0)
2871 /* We don't want to put a loadable section after a
2872 nonloadable section in the same segment. */
2875 else if ((abfd
->flags
& D_PAGED
) == 0)
2877 /* If the file is not demand paged, which means that we
2878 don't require the sections to be correctly aligned in the
2879 file, then there is no other reason for a new segment. */
2880 new_segment
= false;
2883 && (hdr
->flags
& SEC_READONLY
) == 0
2884 && (BFD_ALIGN (last_hdr
->lma
+ last_hdr
->_raw_size
, maxpagesize
)
2887 /* We don't want to put a writable section in a read only
2888 segment, unless they are on the same page in memory
2889 anyhow. We already know that the last section does not
2890 bring us past the current section on the page, so the
2891 only case in which the new section is not on the same
2892 page as the previous section is when the previous section
2893 ends precisely on a page boundary. */
2898 /* Otherwise, we can use the same segment. */
2899 new_segment
= false;
2904 if ((hdr
->flags
& SEC_READONLY
) == 0)
2910 /* We need a new program segment. We must create a new program
2911 header holding all the sections from phdr_index until hdr. */
2913 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_segment
);
2920 if ((hdr
->flags
& SEC_READONLY
) == 0)
2927 phdr_in_segment
= false;
2930 /* Create a final PT_LOAD program segment. */
2931 if (last_hdr
!= NULL
)
2933 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_segment
);
2941 /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */
2944 amt
= sizeof (struct elf_segment_map
);
2945 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2949 m
->p_type
= PT_DYNAMIC
;
2951 m
->sections
[0] = dynsec
;
2957 /* For each loadable .note section, add a PT_NOTE segment. We don't
2958 use bfd_get_section_by_name, because if we link together
2959 nonloadable .note sections and loadable .note sections, we will
2960 generate two .note sections in the output file. FIXME: Using
2961 names for section types is bogus anyhow. */
2962 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
2964 if ((s
->flags
& SEC_LOAD
) != 0
2965 && strncmp (s
->name
, ".note", 5) == 0)
2967 amt
= sizeof (struct elf_segment_map
);
2968 m
= (struct elf_segment_map
*) bfd_zalloc (abfd
, amt
);
2972 m
->p_type
= PT_NOTE
;
2984 elf_tdata (abfd
)->segment_map
= mfirst
;
2988 if (sections
!= NULL
)
2993 /* Sort sections by address. */
2996 elf_sort_sections (arg1
, arg2
)
3000 const asection
*sec1
= *(const asection
**) arg1
;
3001 const asection
*sec2
= *(const asection
**) arg2
;
3003 /* Sort by LMA first, since this is the address used to
3004 place the section into a segment. */
3005 if (sec1
->lma
< sec2
->lma
)
3007 else if (sec1
->lma
> sec2
->lma
)
3010 /* Then sort by VMA. Normally the LMA and the VMA will be
3011 the same, and this will do nothing. */
3012 if (sec1
->vma
< sec2
->vma
)
3014 else if (sec1
->vma
> sec2
->vma
)
3017 /* Put !SEC_LOAD sections after SEC_LOAD ones. */
3019 #define TOEND(x) (((x)->flags & SEC_LOAD) == 0)
3025 /* If the indicies are the same, do not return 0
3026 here, but continue to try the next comparison. */
3027 if (sec1
->target_index
- sec2
->target_index
!= 0)
3028 return sec1
->target_index
- sec2
->target_index
;
3033 else if (TOEND (sec2
))
3038 /* Sort by size, to put zero sized sections
3039 before others at the same address. */
3041 if (sec1
->_raw_size
< sec2
->_raw_size
)
3043 if (sec1
->_raw_size
> sec2
->_raw_size
)
3046 return sec1
->target_index
- sec2
->target_index
;
3049 /* Assign file positions to the sections based on the mapping from
3050 sections to segments. This function also sets up some fields in
3051 the file header, and writes out the program headers. */
3054 assign_file_positions_for_segments (abfd
)
3057 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3059 struct elf_segment_map
*m
;
3061 Elf_Internal_Phdr
*phdrs
;
3063 bfd_vma filehdr_vaddr
, filehdr_paddr
;
3064 bfd_vma phdrs_vaddr
, phdrs_paddr
;
3065 Elf_Internal_Phdr
*p
;
3068 if (elf_tdata (abfd
)->segment_map
== NULL
)
3070 if (! map_sections_to_segments (abfd
))
3074 if (bed
->elf_backend_modify_segment_map
)
3076 if (! (*bed
->elf_backend_modify_segment_map
) (abfd
))
3081 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
3084 elf_elfheader (abfd
)->e_phoff
= bed
->s
->sizeof_ehdr
;
3085 elf_elfheader (abfd
)->e_phentsize
= bed
->s
->sizeof_phdr
;
3086 elf_elfheader (abfd
)->e_phnum
= count
;
3091 /* If we already counted the number of program segments, make sure
3092 that we allocated enough space. This happens when SIZEOF_HEADERS
3093 is used in a linker script. */
3094 alloc
= elf_tdata (abfd
)->program_header_size
/ bed
->s
->sizeof_phdr
;
3095 if (alloc
!= 0 && count
> alloc
)
3097 ((*_bfd_error_handler
)
3098 (_("%s: Not enough room for program headers (allocated %u, need %u)"),
3099 bfd_get_filename (abfd
), alloc
, count
));
3100 bfd_set_error (bfd_error_bad_value
);
3107 amt
= alloc
* sizeof (Elf_Internal_Phdr
);
3108 phdrs
= (Elf_Internal_Phdr
*) bfd_alloc (abfd
, amt
);
3112 off
= bed
->s
->sizeof_ehdr
;
3113 off
+= alloc
* bed
->s
->sizeof_phdr
;
3120 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
3127 /* If elf_segment_map is not from map_sections_to_segments, the
3128 sections may not be correctly ordered. */
3130 qsort (m
->sections
, (size_t) m
->count
, sizeof (asection
*),
3133 p
->p_type
= m
->p_type
;
3134 p
->p_flags
= m
->p_flags
;
3136 if (p
->p_type
== PT_LOAD
3138 && (m
->sections
[0]->flags
& SEC_ALLOC
) != 0)
3140 if ((abfd
->flags
& D_PAGED
) != 0)
3141 off
+= (m
->sections
[0]->vma
- off
) % bed
->maxpagesize
;
3144 bfd_size_type align
;
3147 for (i
= 0, secpp
= m
->sections
; i
< m
->count
; i
++, secpp
++)
3149 bfd_size_type secalign
;
3151 secalign
= bfd_get_section_alignment (abfd
, *secpp
);
3152 if (secalign
> align
)
3156 off
+= (m
->sections
[0]->vma
- off
) % (1 << align
);
3163 p
->p_vaddr
= m
->sections
[0]->vma
;
3165 if (m
->p_paddr_valid
)
3166 p
->p_paddr
= m
->p_paddr
;
3167 else if (m
->count
== 0)
3170 p
->p_paddr
= m
->sections
[0]->lma
;
3172 if (p
->p_type
== PT_LOAD
3173 && (abfd
->flags
& D_PAGED
) != 0)
3174 p
->p_align
= bed
->maxpagesize
;
3175 else if (m
->count
== 0)
3176 p
->p_align
= bed
->s
->file_align
;
3184 if (m
->includes_filehdr
)
3186 if (! m
->p_flags_valid
)
3189 p
->p_filesz
= bed
->s
->sizeof_ehdr
;
3190 p
->p_memsz
= bed
->s
->sizeof_ehdr
;
3193 BFD_ASSERT (p
->p_type
== PT_LOAD
);
3195 if (p
->p_vaddr
< (bfd_vma
) off
)
3197 _bfd_error_handler (_("%s: Not enough room for program headers, try linking with -N"),
3198 bfd_get_filename (abfd
));
3199 bfd_set_error (bfd_error_bad_value
);
3204 if (! m
->p_paddr_valid
)
3207 if (p
->p_type
== PT_LOAD
)
3209 filehdr_vaddr
= p
->p_vaddr
;
3210 filehdr_paddr
= p
->p_paddr
;
3214 if (m
->includes_phdrs
)
3216 if (! m
->p_flags_valid
)
3219 if (m
->includes_filehdr
)
3221 if (p
->p_type
== PT_LOAD
)
3223 phdrs_vaddr
= p
->p_vaddr
+ bed
->s
->sizeof_ehdr
;
3224 phdrs_paddr
= p
->p_paddr
+ bed
->s
->sizeof_ehdr
;
3229 p
->p_offset
= bed
->s
->sizeof_ehdr
;
3233 BFD_ASSERT (p
->p_type
== PT_LOAD
);
3234 p
->p_vaddr
-= off
- p
->p_offset
;
3235 if (! m
->p_paddr_valid
)
3236 p
->p_paddr
-= off
- p
->p_offset
;
3239 if (p
->p_type
== PT_LOAD
)
3241 phdrs_vaddr
= p
->p_vaddr
;
3242 phdrs_paddr
= p
->p_paddr
;
3245 phdrs_vaddr
= bed
->maxpagesize
+ bed
->s
->sizeof_ehdr
;
3248 p
->p_filesz
+= alloc
* bed
->s
->sizeof_phdr
;
3249 p
->p_memsz
+= alloc
* bed
->s
->sizeof_phdr
;
3252 if (p
->p_type
== PT_LOAD
3253 || (p
->p_type
== PT_NOTE
&& bfd_get_format (abfd
) == bfd_core
))
3255 if (! m
->includes_filehdr
&& ! m
->includes_phdrs
)
3261 adjust
= off
- (p
->p_offset
+ p
->p_filesz
);
3262 p
->p_filesz
+= adjust
;
3263 p
->p_memsz
+= adjust
;
3269 for (i
= 0, secpp
= m
->sections
; i
< m
->count
; i
++, secpp
++)
3273 bfd_size_type align
;
3277 align
= 1 << bfd_get_section_alignment (abfd
, sec
);
3279 /* The section may have artificial alignment forced by a
3280 link script. Notice this case by the gap between the
3281 cumulative phdr lma and the section's lma. */
3282 if (p
->p_paddr
+ p
->p_memsz
< sec
->lma
)
3284 bfd_vma adjust
= sec
->lma
- (p
->p_paddr
+ p
->p_memsz
);
3286 p
->p_memsz
+= adjust
;
3289 if ((flags
& SEC_LOAD
) != 0)
3290 p
->p_filesz
+= adjust
;
3293 if (p
->p_type
== PT_LOAD
)
3295 bfd_signed_vma adjust
;
3297 if ((flags
& SEC_LOAD
) != 0)
3299 adjust
= sec
->lma
- (p
->p_paddr
+ p
->p_memsz
);
3303 else if ((flags
& SEC_ALLOC
) != 0)
3305 /* The section VMA must equal the file position
3306 modulo the page size. FIXME: I'm not sure if
3307 this adjustment is really necessary. We used to
3308 not have the SEC_LOAD case just above, and then
3309 this was necessary, but now I'm not sure. */
3310 if ((abfd
->flags
& D_PAGED
) != 0)
3311 adjust
= (sec
->vma
- voff
) % bed
->maxpagesize
;
3313 adjust
= (sec
->vma
- voff
) % align
;
3322 (* _bfd_error_handler
)
3323 (_("Error: First section in segment (%s) starts at 0x%x"),
3324 bfd_section_name (abfd
, sec
), sec
->lma
);
3325 (* _bfd_error_handler
)
3326 (_(" whereas segment starts at 0x%x"),
3331 p
->p_memsz
+= adjust
;
3334 if ((flags
& SEC_LOAD
) != 0)
3335 p
->p_filesz
+= adjust
;
3340 /* We check SEC_HAS_CONTENTS here because if NOLOAD is
3341 used in a linker script we may have a section with
3342 SEC_LOAD clear but which is supposed to have
3344 if ((flags
& SEC_LOAD
) != 0
3345 || (flags
& SEC_HAS_CONTENTS
) != 0)
3346 off
+= sec
->_raw_size
;
3348 if ((flags
& SEC_ALLOC
) != 0)
3349 voff
+= sec
->_raw_size
;
3352 if (p
->p_type
== PT_NOTE
&& bfd_get_format (abfd
) == bfd_core
)
3354 /* The actual "note" segment has i == 0.
3355 This is the one that actually contains everything. */
3359 p
->p_filesz
= sec
->_raw_size
;
3360 off
+= sec
->_raw_size
;
3365 /* Fake sections -- don't need to be written. */
3368 flags
= sec
->flags
= 0;
3375 p
->p_memsz
+= sec
->_raw_size
;
3377 if ((flags
& SEC_LOAD
) != 0)
3378 p
->p_filesz
+= sec
->_raw_size
;
3380 if (align
> p
->p_align
3381 && (p
->p_type
!= PT_LOAD
|| (abfd
->flags
& D_PAGED
) == 0))
3385 if (! m
->p_flags_valid
)
3388 if ((flags
& SEC_CODE
) != 0)
3390 if ((flags
& SEC_READONLY
) == 0)
3396 /* Now that we have set the section file positions, we can set up
3397 the file positions for the non PT_LOAD segments. */
3398 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
3402 if (p
->p_type
!= PT_LOAD
&& m
->count
> 0)
3404 BFD_ASSERT (! m
->includes_filehdr
&& ! m
->includes_phdrs
);
3405 p
->p_offset
= m
->sections
[0]->filepos
;
3409 if (m
->includes_filehdr
)
3411 p
->p_vaddr
= filehdr_vaddr
;
3412 if (! m
->p_paddr_valid
)
3413 p
->p_paddr
= filehdr_paddr
;
3415 else if (m
->includes_phdrs
)
3417 p
->p_vaddr
= phdrs_vaddr
;
3418 if (! m
->p_paddr_valid
)
3419 p
->p_paddr
= phdrs_paddr
;
3424 /* Clear out any program headers we allocated but did not use. */
3425 for (; count
< alloc
; count
++, p
++)
3427 memset (p
, 0, sizeof *p
);
3428 p
->p_type
= PT_NULL
;
3431 elf_tdata (abfd
)->phdr
= phdrs
;
3433 elf_tdata (abfd
)->next_file_pos
= off
;
3435 /* Write out the program headers. */
3436 if (bfd_seek (abfd
, (bfd_signed_vma
) bed
->s
->sizeof_ehdr
, SEEK_SET
) != 0
3437 || bed
->s
->write_out_phdrs (abfd
, phdrs
, alloc
) != 0)
3443 /* Get the size of the program header.
3445 If this is called by the linker before any of the section VMA's are set, it
3446 can't calculate the correct value for a strange memory layout. This only
3447 happens when SIZEOF_HEADERS is used in a linker script. In this case,
3448 SORTED_HDRS is NULL and we assume the normal scenario of one text and one
3449 data segment (exclusive of .interp and .dynamic).
3451 ??? User written scripts must either not use SIZEOF_HEADERS, or assume there
3452 will be two segments. */
3454 static bfd_size_type
3455 get_program_header_size (abfd
)
3460 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3462 /* We can't return a different result each time we're called. */
3463 if (elf_tdata (abfd
)->program_header_size
!= 0)
3464 return elf_tdata (abfd
)->program_header_size
;
3466 if (elf_tdata (abfd
)->segment_map
!= NULL
)
3468 struct elf_segment_map
*m
;
3471 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
3473 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
3474 return elf_tdata (abfd
)->program_header_size
;
3477 /* Assume we will need exactly two PT_LOAD segments: one for text
3478 and one for data. */
3481 s
= bfd_get_section_by_name (abfd
, ".interp");
3482 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
3484 /* If we have a loadable interpreter section, we need a
3485 PT_INTERP segment. In this case, assume we also need a
3486 PT_PHDR segment, although that may not be true for all
3491 if (bfd_get_section_by_name (abfd
, ".dynamic") != NULL
)
3493 /* We need a PT_DYNAMIC segment. */
3497 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
3499 if ((s
->flags
& SEC_LOAD
) != 0
3500 && strncmp (s
->name
, ".note", 5) == 0)
3502 /* We need a PT_NOTE segment. */
3507 /* Let the backend count up any program headers it might need. */
3508 if (bed
->elf_backend_additional_program_headers
)
3512 a
= (*bed
->elf_backend_additional_program_headers
) (abfd
);
3518 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
3519 return elf_tdata (abfd
)->program_header_size
;
3522 /* Work out the file positions of all the sections. This is called by
3523 _bfd_elf_compute_section_file_positions. All the section sizes and
3524 VMAs must be known before this is called.
3526 We do not consider reloc sections at this point, unless they form
3527 part of the loadable image. Reloc sections are assigned file
3528 positions in assign_file_positions_for_relocs, which is called by
3529 write_object_contents and final_link.
3531 We also don't set the positions of the .symtab and .strtab here. */
3534 assign_file_positions_except_relocs (abfd
)
3537 struct elf_obj_tdata
* const tdata
= elf_tdata (abfd
);
3538 Elf_Internal_Ehdr
* const i_ehdrp
= elf_elfheader (abfd
);
3539 Elf_Internal_Shdr
** const i_shdrpp
= elf_elfsections (abfd
);
3541 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3543 if ((abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0
3544 && bfd_get_format (abfd
) != bfd_core
)
3546 Elf_Internal_Shdr
**hdrpp
;
3549 /* Start after the ELF header. */
3550 off
= i_ehdrp
->e_ehsize
;
3552 /* We are not creating an executable, which means that we are
3553 not creating a program header, and that the actual order of
3554 the sections in the file is unimportant. */
3555 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< i_ehdrp
->e_shnum
; i
++, hdrpp
++)
3557 Elf_Internal_Shdr
*hdr
;
3560 if (hdr
->sh_type
== SHT_REL
|| hdr
->sh_type
== SHT_RELA
)
3562 hdr
->sh_offset
= -1;
3565 if (i
== tdata
->symtab_section
3566 || i
== tdata
->strtab_section
)
3568 hdr
->sh_offset
= -1;
3572 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
3578 Elf_Internal_Shdr
**hdrpp
;
3580 /* Assign file positions for the loaded sections based on the
3581 assignment of sections to segments. */
3582 if (! assign_file_positions_for_segments (abfd
))
3585 /* Assign file positions for the other sections. */
3587 off
= elf_tdata (abfd
)->next_file_pos
;
3588 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< i_ehdrp
->e_shnum
; i
++, hdrpp
++)
3590 Elf_Internal_Shdr
*hdr
;
3593 if (hdr
->bfd_section
!= NULL
3594 && hdr
->bfd_section
->filepos
!= 0)
3595 hdr
->sh_offset
= hdr
->bfd_section
->filepos
;
3596 else if ((hdr
->sh_flags
& SHF_ALLOC
) != 0)
3598 ((*_bfd_error_handler
)
3599 (_("%s: warning: allocated section `%s' not in segment"),
3600 bfd_get_filename (abfd
),
3601 (hdr
->bfd_section
== NULL
3603 : hdr
->bfd_section
->name
)));
3604 if ((abfd
->flags
& D_PAGED
) != 0)
3605 off
+= (hdr
->sh_addr
- off
) % bed
->maxpagesize
;
3607 off
+= (hdr
->sh_addr
- off
) % hdr
->sh_addralign
;
3608 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
,
3611 else if (hdr
->sh_type
== SHT_REL
3612 || hdr
->sh_type
== SHT_RELA
3613 || hdr
== i_shdrpp
[tdata
->symtab_section
]
3614 || hdr
== i_shdrpp
[tdata
->strtab_section
])
3615 hdr
->sh_offset
= -1;
3617 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
3621 /* Place the section headers. */
3622 off
= align_file_position (off
, bed
->s
->file_align
);
3623 i_ehdrp
->e_shoff
= off
;
3624 off
+= i_ehdrp
->e_shnum
* i_ehdrp
->e_shentsize
;
3626 elf_tdata (abfd
)->next_file_pos
= off
;
3635 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
3636 Elf_Internal_Phdr
*i_phdrp
= 0; /* Program header table, internal form */
3637 Elf_Internal_Shdr
**i_shdrp
; /* Section header table, internal form */
3639 struct elf_strtab_hash
*shstrtab
;
3640 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3642 i_ehdrp
= elf_elfheader (abfd
);
3643 i_shdrp
= elf_elfsections (abfd
);
3645 shstrtab
= _bfd_elf_strtab_init ();
3646 if (shstrtab
== NULL
)
3649 elf_shstrtab (abfd
) = shstrtab
;
3651 i_ehdrp
->e_ident
[EI_MAG0
] = ELFMAG0
;
3652 i_ehdrp
->e_ident
[EI_MAG1
] = ELFMAG1
;
3653 i_ehdrp
->e_ident
[EI_MAG2
] = ELFMAG2
;
3654 i_ehdrp
->e_ident
[EI_MAG3
] = ELFMAG3
;
3656 i_ehdrp
->e_ident
[EI_CLASS
] = bed
->s
->elfclass
;
3657 i_ehdrp
->e_ident
[EI_DATA
] =
3658 bfd_big_endian (abfd
) ? ELFDATA2MSB
: ELFDATA2LSB
;
3659 i_ehdrp
->e_ident
[EI_VERSION
] = bed
->s
->ev_current
;
3661 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_NONE
;
3662 i_ehdrp
->e_ident
[EI_ABIVERSION
] = 0;
3664 for (count
= EI_PAD
; count
< EI_NIDENT
; count
++)
3665 i_ehdrp
->e_ident
[count
] = 0;
3667 if ((abfd
->flags
& DYNAMIC
) != 0)
3668 i_ehdrp
->e_type
= ET_DYN
;
3669 else if ((abfd
->flags
& EXEC_P
) != 0)
3670 i_ehdrp
->e_type
= ET_EXEC
;
3671 else if (bfd_get_format (abfd
) == bfd_core
)
3672 i_ehdrp
->e_type
= ET_CORE
;
3674 i_ehdrp
->e_type
= ET_REL
;
3676 switch (bfd_get_arch (abfd
))
3678 case bfd_arch_unknown
:
3679 i_ehdrp
->e_machine
= EM_NONE
;
3682 /* There used to be a long list of cases here, each one setting
3683 e_machine to the same EM_* macro #defined as ELF_MACHINE_CODE
3684 in the corresponding bfd definition. To avoid duplication,
3685 the switch was removed. Machines that need special handling
3686 can generally do it in elf_backend_final_write_processing(),
3687 unless they need the information earlier than the final write.
3688 Such need can generally be supplied by replacing the tests for
3689 e_machine with the conditions used to determine it. */
3691 if (get_elf_backend_data (abfd
) != NULL
)
3692 i_ehdrp
->e_machine
= get_elf_backend_data (abfd
)->elf_machine_code
;
3694 i_ehdrp
->e_machine
= EM_NONE
;
3697 i_ehdrp
->e_version
= bed
->s
->ev_current
;
3698 i_ehdrp
->e_ehsize
= bed
->s
->sizeof_ehdr
;
3700 /* No program header, for now. */
3701 i_ehdrp
->e_phoff
= 0;
3702 i_ehdrp
->e_phentsize
= 0;
3703 i_ehdrp
->e_phnum
= 0;
3705 /* Each bfd section is section header entry. */
3706 i_ehdrp
->e_entry
= bfd_get_start_address (abfd
);
3707 i_ehdrp
->e_shentsize
= bed
->s
->sizeof_shdr
;
3709 /* If we're building an executable, we'll need a program header table. */
3710 if (abfd
->flags
& EXEC_P
)
3712 /* It all happens later. */
3714 i_ehdrp
->e_phentsize
= sizeof (Elf_External_Phdr
);
3716 /* elf_build_phdrs() returns a (NULL-terminated) array of
3717 Elf_Internal_Phdrs. */
3718 i_phdrp
= elf_build_phdrs (abfd
, i_ehdrp
, i_shdrp
, &i_ehdrp
->e_phnum
);
3719 i_ehdrp
->e_phoff
= outbase
;
3720 outbase
+= i_ehdrp
->e_phentsize
* i_ehdrp
->e_phnum
;
3725 i_ehdrp
->e_phentsize
= 0;
3727 i_ehdrp
->e_phoff
= 0;
3730 elf_tdata (abfd
)->symtab_hdr
.sh_name
=
3731 (unsigned int) _bfd_elf_strtab_add (shstrtab
, ".symtab", false);
3732 elf_tdata (abfd
)->strtab_hdr
.sh_name
=
3733 (unsigned int) _bfd_elf_strtab_add (shstrtab
, ".strtab", false);
3734 elf_tdata (abfd
)->shstrtab_hdr
.sh_name
=
3735 (unsigned int) _bfd_elf_strtab_add (shstrtab
, ".shstrtab", false);
3736 if (elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
3737 || elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
3738 || elf_tdata (abfd
)->shstrtab_hdr
.sh_name
== (unsigned int) -1)
3744 /* Assign file positions for all the reloc sections which are not part
3745 of the loadable file image. */
3748 _bfd_elf_assign_file_positions_for_relocs (abfd
)
3753 Elf_Internal_Shdr
**shdrpp
;
3755 off
= elf_tdata (abfd
)->next_file_pos
;
3757 for (i
= 1, shdrpp
= elf_elfsections (abfd
) + 1;
3758 i
< elf_elfheader (abfd
)->e_shnum
;
3761 Elf_Internal_Shdr
*shdrp
;
3764 if ((shdrp
->sh_type
== SHT_REL
|| shdrp
->sh_type
== SHT_RELA
)
3765 && shdrp
->sh_offset
== -1)
3766 off
= _bfd_elf_assign_file_position_for_section (shdrp
, off
, true);
3769 elf_tdata (abfd
)->next_file_pos
= off
;
3773 _bfd_elf_write_object_contents (abfd
)
3776 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3777 Elf_Internal_Ehdr
*i_ehdrp
;
3778 Elf_Internal_Shdr
**i_shdrp
;
3782 if (! abfd
->output_has_begun
3783 && ! _bfd_elf_compute_section_file_positions
3784 (abfd
, (struct bfd_link_info
*) NULL
))
3787 i_shdrp
= elf_elfsections (abfd
);
3788 i_ehdrp
= elf_elfheader (abfd
);
3791 bfd_map_over_sections (abfd
, bed
->s
->write_relocs
, &failed
);
3795 _bfd_elf_assign_file_positions_for_relocs (abfd
);
3797 /* After writing the headers, we need to write the sections too... */
3798 for (count
= 1; count
< i_ehdrp
->e_shnum
; count
++)
3800 if (bed
->elf_backend_section_processing
)
3801 (*bed
->elf_backend_section_processing
) (abfd
, i_shdrp
[count
]);
3802 if (i_shdrp
[count
]->contents
)
3804 bfd_size_type amt
= i_shdrp
[count
]->sh_size
;
3806 if (bfd_seek (abfd
, i_shdrp
[count
]->sh_offset
, SEEK_SET
) != 0
3807 || bfd_bwrite (i_shdrp
[count
]->contents
, amt
, abfd
) != amt
)
3812 /* Write out the section header names. */
3813 if (bfd_seek (abfd
, elf_tdata (abfd
)->shstrtab_hdr
.sh_offset
, SEEK_SET
) != 0
3814 || ! _bfd_elf_strtab_emit (abfd
, elf_shstrtab (abfd
)))
3817 if (bed
->elf_backend_final_write_processing
)
3818 (*bed
->elf_backend_final_write_processing
) (abfd
,
3819 elf_tdata (abfd
)->linker
);
3821 return bed
->s
->write_shdrs_and_ehdr (abfd
);
3825 _bfd_elf_write_corefile_contents (abfd
)
3828 /* Hopefully this can be done just like an object file. */
3829 return _bfd_elf_write_object_contents (abfd
);
3832 /* Given a section, search the header to find them. */
3835 _bfd_elf_section_from_bfd_section (abfd
, asect
)
3839 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3840 Elf_Internal_Shdr
**i_shdrp
= elf_elfsections (abfd
);
3842 Elf_Internal_Shdr
*hdr
;
3843 int maxindex
= elf_elfheader (abfd
)->e_shnum
;
3845 for (index
= 0; index
< maxindex
; index
++)
3847 hdr
= i_shdrp
[index
];
3848 if (hdr
->bfd_section
== asect
)
3852 if (bed
->elf_backend_section_from_bfd_section
)
3854 for (index
= 0; index
< maxindex
; index
++)
3858 hdr
= i_shdrp
[index
];
3860 if ((*bed
->elf_backend_section_from_bfd_section
)
3861 (abfd
, hdr
, asect
, &retval
))
3866 if (bfd_is_abs_section (asect
))
3868 if (bfd_is_com_section (asect
))
3870 if (bfd_is_und_section (asect
))
3873 bfd_set_error (bfd_error_nonrepresentable_section
);
3878 /* Given a BFD symbol, return the index in the ELF symbol table, or -1
3882 _bfd_elf_symbol_from_bfd_symbol (abfd
, asym_ptr_ptr
)
3884 asymbol
**asym_ptr_ptr
;
3886 asymbol
*asym_ptr
= *asym_ptr_ptr
;
3888 flagword flags
= asym_ptr
->flags
;
3890 /* When gas creates relocations against local labels, it creates its
3891 own symbol for the section, but does put the symbol into the
3892 symbol chain, so udata is 0. When the linker is generating
3893 relocatable output, this section symbol may be for one of the
3894 input sections rather than the output section. */
3895 if (asym_ptr
->udata
.i
== 0
3896 && (flags
& BSF_SECTION_SYM
)
3897 && asym_ptr
->section
)
3901 if (asym_ptr
->section
->output_section
!= NULL
)
3902 indx
= asym_ptr
->section
->output_section
->index
;
3904 indx
= asym_ptr
->section
->index
;
3905 if (indx
< elf_num_section_syms (abfd
)
3906 && elf_section_syms (abfd
)[indx
] != NULL
)
3907 asym_ptr
->udata
.i
= elf_section_syms (abfd
)[indx
]->udata
.i
;
3910 idx
= asym_ptr
->udata
.i
;
3914 /* This case can occur when using --strip-symbol on a symbol
3915 which is used in a relocation entry. */
3916 (*_bfd_error_handler
)
3917 (_("%s: symbol `%s' required but not present"),
3918 bfd_archive_filename (abfd
), bfd_asymbol_name (asym_ptr
));
3919 bfd_set_error (bfd_error_no_symbols
);
3926 _("elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n"),
3927 (long) asym_ptr
, asym_ptr
->name
, idx
, flags
,
3928 elf_symbol_flags (flags
));
3936 /* Copy private BFD data. This copies any program header information. */
3939 copy_private_bfd_data (ibfd
, obfd
)
3943 Elf_Internal_Ehdr
* iehdr
;
3944 struct elf_segment_map
* map
;
3945 struct elf_segment_map
* map_first
;
3946 struct elf_segment_map
** pointer_to_map
;
3947 Elf_Internal_Phdr
* segment
;
3950 unsigned int num_segments
;
3951 boolean phdr_included
= false;
3952 bfd_vma maxpagesize
;
3953 struct elf_segment_map
* phdr_adjust_seg
= NULL
;
3954 unsigned int phdr_adjust_num
= 0;
3956 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
3957 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
3960 if (elf_tdata (ibfd
)->phdr
== NULL
)
3963 iehdr
= elf_elfheader (ibfd
);
3966 pointer_to_map
= &map_first
;
3968 num_segments
= elf_elfheader (ibfd
)->e_phnum
;
3969 maxpagesize
= get_elf_backend_data (obfd
)->maxpagesize
;
3971 /* Returns the end address of the segment + 1. */
3972 #define SEGMENT_END(segment, start) \
3973 (start + (segment->p_memsz > segment->p_filesz \
3974 ? segment->p_memsz : segment->p_filesz))
3976 /* Returns true if the given section is contained within
3977 the given segment. VMA addresses are compared. */
3978 #define IS_CONTAINED_BY_VMA(section, segment) \
3979 (section->vma >= segment->p_vaddr \
3980 && (section->vma + section->_raw_size) \
3981 <= (SEGMENT_END (segment, segment->p_vaddr)))
3983 /* Returns true if the given section is contained within
3984 the given segment. LMA addresses are compared. */
3985 #define IS_CONTAINED_BY_LMA(section, segment, base) \
3986 (section->lma >= base \
3987 && (section->lma + section->_raw_size) \
3988 <= SEGMENT_END (segment, base))
3990 /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */
3991 #define IS_COREFILE_NOTE(p, s) \
3992 (p->p_type == PT_NOTE \
3993 && bfd_get_format (ibfd) == bfd_core \
3994 && s->vma == 0 && s->lma == 0 \
3995 && (bfd_vma) s->filepos >= p->p_offset \
3996 && (bfd_vma) s->filepos + s->_raw_size \
3997 <= p->p_offset + p->p_filesz)
3999 /* The complicated case when p_vaddr is 0 is to handle the Solaris
4000 linker, which generates a PT_INTERP section with p_vaddr and
4001 p_memsz set to 0. */
4002 #define IS_SOLARIS_PT_INTERP(p, s) \
4004 && p->p_filesz > 0 \
4005 && (s->flags & SEC_HAS_CONTENTS) != 0 \
4006 && s->_raw_size > 0 \
4007 && (bfd_vma) s->filepos >= p->p_offset \
4008 && ((bfd_vma) s->filepos + s->_raw_size \
4009 <= p->p_offset + p->p_filesz))
4011 /* Decide if the given section should be included in the given segment.
4012 A section will be included if:
4013 1. It is within the address space of the segment -- we use the LMA
4014 if that is set for the segment and the VMA otherwise,
4015 2. It is an allocated segment,
4016 3. There is an output section associated with it,
4017 4. The section has not already been allocated to a previous segment. */
4018 #define INCLUDE_SECTION_IN_SEGMENT(section, segment) \
4019 (((((segment->p_paddr \
4020 ? IS_CONTAINED_BY_LMA (section, segment, segment->p_paddr) \
4021 : IS_CONTAINED_BY_VMA (section, segment)) \
4022 || IS_SOLARIS_PT_INTERP (segment, section)) \
4023 && (section->flags & SEC_ALLOC) != 0) \
4024 || IS_COREFILE_NOTE (segment, section)) \
4025 && section->output_section != NULL \
4026 && section->segment_mark == false)
4028 /* Returns true iff seg1 starts after the end of seg2. */
4029 #define SEGMENT_AFTER_SEGMENT(seg1, seg2) \
4030 (seg1->p_vaddr >= SEGMENT_END (seg2, seg2->p_vaddr))
4032 /* Returns true iff seg1 and seg2 overlap. */
4033 #define SEGMENT_OVERLAPS(seg1, seg2) \
4034 (!(SEGMENT_AFTER_SEGMENT (seg1, seg2) || SEGMENT_AFTER_SEGMENT (seg2, seg1)))
4036 /* Initialise the segment mark field. */
4037 for (section
= ibfd
->sections
; section
!= NULL
; section
= section
->next
)
4038 section
->segment_mark
= false;
4040 /* Scan through the segments specified in the program header
4041 of the input BFD. For this first scan we look for overlaps
4042 in the loadable segments. These can be created by wierd
4043 parameters to objcopy. */
4044 for (i
= 0, segment
= elf_tdata (ibfd
)->phdr
;
4049 Elf_Internal_Phdr
*segment2
;
4051 if (segment
->p_type
!= PT_LOAD
)
4054 /* Determine if this segment overlaps any previous segments. */
4055 for (j
= 0, segment2
= elf_tdata (ibfd
)->phdr
; j
< i
; j
++, segment2
++)
4057 bfd_signed_vma extra_length
;
4059 if (segment2
->p_type
!= PT_LOAD
4060 || ! SEGMENT_OVERLAPS (segment
, segment2
))
4063 /* Merge the two segments together. */
4064 if (segment2
->p_vaddr
< segment
->p_vaddr
)
4066 /* Extend SEGMENT2 to include SEGMENT and then delete
4069 SEGMENT_END (segment
, segment
->p_vaddr
)
4070 - SEGMENT_END (segment2
, segment2
->p_vaddr
);
4072 if (extra_length
> 0)
4074 segment2
->p_memsz
+= extra_length
;
4075 segment2
->p_filesz
+= extra_length
;
4078 segment
->p_type
= PT_NULL
;
4080 /* Since we have deleted P we must restart the outer loop. */
4082 segment
= elf_tdata (ibfd
)->phdr
;
4087 /* Extend SEGMENT to include SEGMENT2 and then delete
4090 SEGMENT_END (segment2
, segment2
->p_vaddr
)
4091 - SEGMENT_END (segment
, segment
->p_vaddr
);
4093 if (extra_length
> 0)
4095 segment
->p_memsz
+= extra_length
;
4096 segment
->p_filesz
+= extra_length
;
4099 segment2
->p_type
= PT_NULL
;
4104 /* The second scan attempts to assign sections to segments. */
4105 for (i
= 0, segment
= elf_tdata (ibfd
)->phdr
;
4109 unsigned int section_count
;
4110 asection
** sections
;
4111 asection
* output_section
;
4113 bfd_vma matching_lma
;
4114 bfd_vma suggested_lma
;
4118 if (segment
->p_type
== PT_NULL
)
4121 /* Compute how many sections might be placed into this segment. */
4123 for (section
= ibfd
->sections
; section
!= NULL
; section
= section
->next
)
4124 if (INCLUDE_SECTION_IN_SEGMENT (section
, segment
))
4127 /* Allocate a segment map big enough to contain all of the
4128 sections we have selected. */
4129 amt
= sizeof (struct elf_segment_map
);
4130 amt
+= ((bfd_size_type
) section_count
- 1) * sizeof (asection
*);
4131 map
= (struct elf_segment_map
*) bfd_alloc (obfd
, amt
);
4135 /* Initialise the fields of the segment map. Default to
4136 using the physical address of the segment in the input BFD. */
4138 map
->p_type
= segment
->p_type
;
4139 map
->p_flags
= segment
->p_flags
;
4140 map
->p_flags_valid
= 1;
4141 map
->p_paddr
= segment
->p_paddr
;
4142 map
->p_paddr_valid
= 1;
4144 /* Determine if this segment contains the ELF file header
4145 and if it contains the program headers themselves. */
4146 map
->includes_filehdr
= (segment
->p_offset
== 0
4147 && segment
->p_filesz
>= iehdr
->e_ehsize
);
4149 map
->includes_phdrs
= 0;
4151 if (! phdr_included
|| segment
->p_type
!= PT_LOAD
)
4153 map
->includes_phdrs
=
4154 (segment
->p_offset
<= (bfd_vma
) iehdr
->e_phoff
4155 && (segment
->p_offset
+ segment
->p_filesz
4156 >= ((bfd_vma
) iehdr
->e_phoff
4157 + iehdr
->e_phnum
* iehdr
->e_phentsize
)));
4159 if (segment
->p_type
== PT_LOAD
&& map
->includes_phdrs
)
4160 phdr_included
= true;
4163 if (section_count
== 0)
4165 /* Special segments, such as the PT_PHDR segment, may contain
4166 no sections, but ordinary, loadable segments should contain
4168 if (segment
->p_type
== PT_LOAD
)
4170 (_("%s: warning: Empty loadable segment detected\n"),
4171 bfd_archive_filename (ibfd
));
4174 *pointer_to_map
= map
;
4175 pointer_to_map
= &map
->next
;
4180 /* Now scan the sections in the input BFD again and attempt
4181 to add their corresponding output sections to the segment map.
4182 The problem here is how to handle an output section which has
4183 been moved (ie had its LMA changed). There are four possibilities:
4185 1. None of the sections have been moved.
4186 In this case we can continue to use the segment LMA from the
4189 2. All of the sections have been moved by the same amount.
4190 In this case we can change the segment's LMA to match the LMA
4191 of the first section.
4193 3. Some of the sections have been moved, others have not.
4194 In this case those sections which have not been moved can be
4195 placed in the current segment which will have to have its size,
4196 and possibly its LMA changed, and a new segment or segments will
4197 have to be created to contain the other sections.
4199 4. The sections have been moved, but not be the same amount.
4200 In this case we can change the segment's LMA to match the LMA
4201 of the first section and we will have to create a new segment
4202 or segments to contain the other sections.
4204 In order to save time, we allocate an array to hold the section
4205 pointers that we are interested in. As these sections get assigned
4206 to a segment, they are removed from this array. */
4208 amt
= (bfd_size_type
) section_count
* sizeof (asection
*);
4209 sections
= (asection
**) bfd_malloc (amt
);
4210 if (sections
== NULL
)
4213 /* Step One: Scan for segment vs section LMA conflicts.
4214 Also add the sections to the section array allocated above.
4215 Also add the sections to the current segment. In the common
4216 case, where the sections have not been moved, this means that
4217 we have completely filled the segment, and there is nothing
4223 for (j
= 0, section
= ibfd
->sections
;
4225 section
= section
->next
)
4227 if (INCLUDE_SECTION_IN_SEGMENT (section
, segment
))
4229 output_section
= section
->output_section
;
4231 sections
[j
++] = section
;
4233 /* The Solaris native linker always sets p_paddr to 0.
4234 We try to catch that case here, and set it to the
4236 if (segment
->p_paddr
== 0
4237 && segment
->p_vaddr
!= 0
4239 && output_section
->lma
!= 0
4240 && (output_section
->vma
== (segment
->p_vaddr
4241 + (map
->includes_filehdr
4244 + (map
->includes_phdrs
4246 * iehdr
->e_phentsize
)
4248 map
->p_paddr
= segment
->p_vaddr
;
4250 /* Match up the physical address of the segment with the
4251 LMA address of the output section. */
4252 if (IS_CONTAINED_BY_LMA (output_section
, segment
, map
->p_paddr
)
4253 || IS_COREFILE_NOTE (segment
, section
))
4255 if (matching_lma
== 0)
4256 matching_lma
= output_section
->lma
;
4258 /* We assume that if the section fits within the segment
4259 then it does not overlap any other section within that
4261 map
->sections
[isec
++] = output_section
;
4263 else if (suggested_lma
== 0)
4264 suggested_lma
= output_section
->lma
;
4268 BFD_ASSERT (j
== section_count
);
4270 /* Step Two: Adjust the physical address of the current segment,
4272 if (isec
== section_count
)
4274 /* All of the sections fitted within the segment as currently
4275 specified. This is the default case. Add the segment to
4276 the list of built segments and carry on to process the next
4277 program header in the input BFD. */
4278 map
->count
= section_count
;
4279 *pointer_to_map
= map
;
4280 pointer_to_map
= &map
->next
;
4287 if (matching_lma
!= 0)
4289 /* At least one section fits inside the current segment.
4290 Keep it, but modify its physical address to match the
4291 LMA of the first section that fitted. */
4292 map
->p_paddr
= matching_lma
;
4296 /* None of the sections fitted inside the current segment.
4297 Change the current segment's physical address to match
4298 the LMA of the first section. */
4299 map
->p_paddr
= suggested_lma
;
4302 /* Offset the segment physical address from the lma
4303 to allow for space taken up by elf headers. */
4304 if (map
->includes_filehdr
)
4305 map
->p_paddr
-= iehdr
->e_ehsize
;
4307 if (map
->includes_phdrs
)
4309 map
->p_paddr
-= iehdr
->e_phnum
* iehdr
->e_phentsize
;
4311 /* iehdr->e_phnum is just an estimate of the number
4312 of program headers that we will need. Make a note
4313 here of the number we used and the segment we chose
4314 to hold these headers, so that we can adjust the
4315 offset when we know the correct value. */
4316 phdr_adjust_num
= iehdr
->e_phnum
;
4317 phdr_adjust_seg
= map
;
4321 /* Step Three: Loop over the sections again, this time assigning
4322 those that fit to the current segment and remvoing them from the
4323 sections array; but making sure not to leave large gaps. Once all
4324 possible sections have been assigned to the current segment it is
4325 added to the list of built segments and if sections still remain
4326 to be assigned, a new segment is constructed before repeating
4334 /* Fill the current segment with sections that fit. */
4335 for (j
= 0; j
< section_count
; j
++)
4337 section
= sections
[j
];
4339 if (section
== NULL
)
4342 output_section
= section
->output_section
;
4344 BFD_ASSERT (output_section
!= NULL
);
4346 if (IS_CONTAINED_BY_LMA (output_section
, segment
, map
->p_paddr
)
4347 || IS_COREFILE_NOTE (segment
, section
))
4349 if (map
->count
== 0)
4351 /* If the first section in a segment does not start at
4352 the beginning of the segment, then something is
4354 if (output_section
->lma
!=
4356 + (map
->includes_filehdr
? iehdr
->e_ehsize
: 0)
4357 + (map
->includes_phdrs
4358 ? iehdr
->e_phnum
* iehdr
->e_phentsize
4364 asection
* prev_sec
;
4366 prev_sec
= map
->sections
[map
->count
- 1];
4368 /* If the gap between the end of the previous section
4369 and the start of this section is more than
4370 maxpagesize then we need to start a new segment. */
4371 if ((BFD_ALIGN (prev_sec
->lma
+ prev_sec
->_raw_size
,
4373 < BFD_ALIGN (output_section
->lma
, maxpagesize
))
4374 || ((prev_sec
->lma
+ prev_sec
->_raw_size
)
4375 > output_section
->lma
))
4377 if (suggested_lma
== 0)
4378 suggested_lma
= output_section
->lma
;
4384 map
->sections
[map
->count
++] = output_section
;
4387 section
->segment_mark
= true;
4389 else if (suggested_lma
== 0)
4390 suggested_lma
= output_section
->lma
;
4393 BFD_ASSERT (map
->count
> 0);
4395 /* Add the current segment to the list of built segments. */
4396 *pointer_to_map
= map
;
4397 pointer_to_map
= &map
->next
;
4399 if (isec
< section_count
)
4401 /* We still have not allocated all of the sections to
4402 segments. Create a new segment here, initialise it
4403 and carry on looping. */
4404 amt
= sizeof (struct elf_segment_map
);
4405 amt
+= ((bfd_size_type
) section_count
- 1) * sizeof (asection
*);
4406 map
= (struct elf_segment_map
*) bfd_alloc (obfd
, amt
);
4410 /* Initialise the fields of the segment map. Set the physical
4411 physical address to the LMA of the first section that has
4412 not yet been assigned. */
4414 map
->p_type
= segment
->p_type
;
4415 map
->p_flags
= segment
->p_flags
;
4416 map
->p_flags_valid
= 1;
4417 map
->p_paddr
= suggested_lma
;
4418 map
->p_paddr_valid
= 1;
4419 map
->includes_filehdr
= 0;
4420 map
->includes_phdrs
= 0;
4423 while (isec
< section_count
);
4428 /* The Solaris linker creates program headers in which all the
4429 p_paddr fields are zero. When we try to objcopy or strip such a
4430 file, we get confused. Check for this case, and if we find it
4431 reset the p_paddr_valid fields. */
4432 for (map
= map_first
; map
!= NULL
; map
= map
->next
)
4433 if (map
->p_paddr
!= 0)
4437 for (map
= map_first
; map
!= NULL
; map
= map
->next
)
4438 map
->p_paddr_valid
= 0;
4441 elf_tdata (obfd
)->segment_map
= map_first
;
4443 /* If we had to estimate the number of program headers that were
4444 going to be needed, then check our estimate know and adjust
4445 the offset if necessary. */
4446 if (phdr_adjust_seg
!= NULL
)
4450 for (count
= 0, map
= map_first
; map
!= NULL
; map
= map
->next
)
4453 if (count
> phdr_adjust_num
)
4454 phdr_adjust_seg
->p_paddr
4455 -= (count
- phdr_adjust_num
) * iehdr
->e_phentsize
;
4459 /* Final Step: Sort the segments into ascending order of physical
4461 if (map_first
!= NULL
)
4463 struct elf_segment_map
*prev
;
4466 for (map
= map_first
->next
; map
!= NULL
; prev
= map
, map
= map
->next
)
4468 /* Yes I know - its a bubble sort.... */
4469 if (map
->next
!= NULL
&& (map
->next
->p_paddr
< map
->p_paddr
))
4471 /* Swap map and map->next. */
4472 prev
->next
= map
->next
;
4473 map
->next
= map
->next
->next
;
4474 prev
->next
->next
= map
;
4484 #undef IS_CONTAINED_BY_VMA
4485 #undef IS_CONTAINED_BY_LMA
4486 #undef IS_COREFILE_NOTE
4487 #undef IS_SOLARIS_PT_INTERP
4488 #undef INCLUDE_SECTION_IN_SEGMENT
4489 #undef SEGMENT_AFTER_SEGMENT
4490 #undef SEGMENT_OVERLAPS
4494 /* Copy private section information. This copies over the entsize
4495 field, and sometimes the info field. */
4498 _bfd_elf_copy_private_section_data (ibfd
, isec
, obfd
, osec
)
4504 Elf_Internal_Shdr
*ihdr
, *ohdr
;
4506 if (ibfd
->xvec
->flavour
!= bfd_target_elf_flavour
4507 || obfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
4510 /* Copy over private BFD data if it has not already been copied.
4511 This must be done here, rather than in the copy_private_bfd_data
4512 entry point, because the latter is called after the section
4513 contents have been set, which means that the program headers have
4514 already been worked out. */
4515 if (elf_tdata (obfd
)->segment_map
== NULL
4516 && elf_tdata (ibfd
)->phdr
!= NULL
)
4520 /* Only set up the segments if there are no more SEC_ALLOC
4521 sections. FIXME: This won't do the right thing if objcopy is
4522 used to remove the last SEC_ALLOC section, since objcopy
4523 won't call this routine in that case. */
4524 for (s
= isec
->next
; s
!= NULL
; s
= s
->next
)
4525 if ((s
->flags
& SEC_ALLOC
) != 0)
4529 if (! copy_private_bfd_data (ibfd
, obfd
))
4534 ihdr
= &elf_section_data (isec
)->this_hdr
;
4535 ohdr
= &elf_section_data (osec
)->this_hdr
;
4537 ohdr
->sh_entsize
= ihdr
->sh_entsize
;
4539 if (ihdr
->sh_type
== SHT_SYMTAB
4540 || ihdr
->sh_type
== SHT_DYNSYM
4541 || ihdr
->sh_type
== SHT_GNU_verneed
4542 || ihdr
->sh_type
== SHT_GNU_verdef
)
4543 ohdr
->sh_info
= ihdr
->sh_info
;
4545 elf_section_data (osec
)->use_rela_p
4546 = elf_section_data (isec
)->use_rela_p
;
4551 /* Copy private symbol information. If this symbol is in a section
4552 which we did not map into a BFD section, try to map the section
4553 index correctly. We use special macro definitions for the mapped
4554 section indices; these definitions are interpreted by the
4555 swap_out_syms function. */
4557 #define MAP_ONESYMTAB (SHN_LORESERVE - 1)
4558 #define MAP_DYNSYMTAB (SHN_LORESERVE - 2)
4559 #define MAP_STRTAB (SHN_LORESERVE - 3)
4560 #define MAP_SHSTRTAB (SHN_LORESERVE - 4)
4563 _bfd_elf_copy_private_symbol_data (ibfd
, isymarg
, obfd
, osymarg
)
4569 elf_symbol_type
*isym
, *osym
;
4571 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
4572 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
4575 isym
= elf_symbol_from (ibfd
, isymarg
);
4576 osym
= elf_symbol_from (obfd
, osymarg
);
4580 && bfd_is_abs_section (isym
->symbol
.section
))
4584 shndx
= isym
->internal_elf_sym
.st_shndx
;
4585 if (shndx
== elf_onesymtab (ibfd
))
4586 shndx
= MAP_ONESYMTAB
;
4587 else if (shndx
== elf_dynsymtab (ibfd
))
4588 shndx
= MAP_DYNSYMTAB
;
4589 else if (shndx
== elf_tdata (ibfd
)->strtab_section
)
4591 else if (shndx
== elf_tdata (ibfd
)->shstrtab_section
)
4592 shndx
= MAP_SHSTRTAB
;
4593 osym
->internal_elf_sym
.st_shndx
= shndx
;
4599 /* Swap out the symbols. */
4602 swap_out_syms (abfd
, sttp
, relocatable_p
)
4604 struct bfd_strtab_hash
**sttp
;
4607 struct elf_backend_data
*bed
;
4610 struct bfd_strtab_hash
*stt
;
4611 Elf_Internal_Shdr
*symtab_hdr
;
4612 Elf_Internal_Shdr
*symstrtab_hdr
;
4613 char *outbound_syms
;
4617 if (!elf_map_symbols (abfd
))
4620 /* Dump out the symtabs. */
4621 stt
= _bfd_elf_stringtab_init ();
4625 bed
= get_elf_backend_data (abfd
);
4626 symcount
= bfd_get_symcount (abfd
);
4627 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4628 symtab_hdr
->sh_type
= SHT_SYMTAB
;
4629 symtab_hdr
->sh_entsize
= bed
->s
->sizeof_sym
;
4630 symtab_hdr
->sh_size
= symtab_hdr
->sh_entsize
* (symcount
+ 1);
4631 symtab_hdr
->sh_info
= elf_num_locals (abfd
) + 1;
4632 symtab_hdr
->sh_addralign
= bed
->s
->file_align
;
4634 symstrtab_hdr
= &elf_tdata (abfd
)->strtab_hdr
;
4635 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
4637 amt
= (bfd_size_type
) (1 + symcount
) * bed
->s
->sizeof_sym
;
4638 outbound_syms
= bfd_alloc (abfd
, amt
);
4639 if (outbound_syms
== NULL
)
4641 symtab_hdr
->contents
= (PTR
) outbound_syms
;
4643 /* now generate the data (for "contents") */
4645 /* Fill in zeroth symbol and swap it out. */
4646 Elf_Internal_Sym sym
;
4652 sym
.st_shndx
= SHN_UNDEF
;
4653 bed
->s
->swap_symbol_out (abfd
, &sym
, (PTR
) outbound_syms
);
4654 outbound_syms
+= bed
->s
->sizeof_sym
;
4657 syms
= bfd_get_outsymbols (abfd
);
4658 for (idx
= 0; idx
< symcount
; idx
++)
4660 Elf_Internal_Sym sym
;
4661 bfd_vma value
= syms
[idx
]->value
;
4662 elf_symbol_type
*type_ptr
;
4663 flagword flags
= syms
[idx
]->flags
;
4666 if ((flags
& (BSF_SECTION_SYM
| BSF_GLOBAL
)) == BSF_SECTION_SYM
)
4668 /* Local section symbols have no name. */
4673 sym
.st_name
= (unsigned long) _bfd_stringtab_add (stt
,
4676 if (sym
.st_name
== (unsigned long) -1)
4680 type_ptr
= elf_symbol_from (abfd
, syms
[idx
]);
4682 if ((flags
& BSF_SECTION_SYM
) == 0
4683 && bfd_is_com_section (syms
[idx
]->section
))
4685 /* ELF common symbols put the alignment into the `value' field,
4686 and the size into the `size' field. This is backwards from
4687 how BFD handles it, so reverse it here. */
4688 sym
.st_size
= value
;
4689 if (type_ptr
== NULL
4690 || type_ptr
->internal_elf_sym
.st_value
== 0)
4691 sym
.st_value
= value
>= 16 ? 16 : (1 << bfd_log2 (value
));
4693 sym
.st_value
= type_ptr
->internal_elf_sym
.st_value
;
4694 sym
.st_shndx
= _bfd_elf_section_from_bfd_section
4695 (abfd
, syms
[idx
]->section
);
4699 asection
*sec
= syms
[idx
]->section
;
4702 if (sec
->output_section
)
4704 value
+= sec
->output_offset
;
4705 sec
= sec
->output_section
;
4707 /* Don't add in the section vma for relocatable output. */
4708 if (! relocatable_p
)
4710 sym
.st_value
= value
;
4711 sym
.st_size
= type_ptr
? type_ptr
->internal_elf_sym
.st_size
: 0;
4713 if (bfd_is_abs_section (sec
)
4715 && type_ptr
->internal_elf_sym
.st_shndx
!= 0)
4717 /* This symbol is in a real ELF section which we did
4718 not create as a BFD section. Undo the mapping done
4719 by copy_private_symbol_data. */
4720 shndx
= type_ptr
->internal_elf_sym
.st_shndx
;
4724 shndx
= elf_onesymtab (abfd
);
4727 shndx
= elf_dynsymtab (abfd
);
4730 shndx
= elf_tdata (abfd
)->strtab_section
;
4733 shndx
= elf_tdata (abfd
)->shstrtab_section
;
4741 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
4747 /* Writing this would be a hell of a lot easier if
4748 we had some decent documentation on bfd, and
4749 knew what to expect of the library, and what to
4750 demand of applications. For example, it
4751 appears that `objcopy' might not set the
4752 section of a symbol to be a section that is
4753 actually in the output file. */
4754 sec2
= bfd_get_section_by_name (abfd
, sec
->name
);
4755 BFD_ASSERT (sec2
!= 0);
4756 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec2
);
4757 BFD_ASSERT (shndx
!= -1);
4761 sym
.st_shndx
= shndx
;
4764 if ((flags
& BSF_FUNCTION
) != 0)
4766 else if ((flags
& BSF_OBJECT
) != 0)
4771 /* Processor-specific types */
4772 if (type_ptr
!= NULL
4773 && bed
->elf_backend_get_symbol_type
)
4774 type
= ((*bed
->elf_backend_get_symbol_type
)
4775 (&type_ptr
->internal_elf_sym
, type
));
4777 if (flags
& BSF_SECTION_SYM
)
4779 if (flags
& BSF_GLOBAL
)
4780 sym
.st_info
= ELF_ST_INFO (STB_GLOBAL
, STT_SECTION
);
4782 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_SECTION
);
4784 else if (bfd_is_com_section (syms
[idx
]->section
))
4785 sym
.st_info
= ELF_ST_INFO (STB_GLOBAL
, type
);
4786 else if (bfd_is_und_section (syms
[idx
]->section
))
4787 sym
.st_info
= ELF_ST_INFO (((flags
& BSF_WEAK
)
4791 else if (flags
& BSF_FILE
)
4792 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_FILE
);
4795 int bind
= STB_LOCAL
;
4797 if (flags
& BSF_LOCAL
)
4799 else if (flags
& BSF_WEAK
)
4801 else if (flags
& BSF_GLOBAL
)
4804 sym
.st_info
= ELF_ST_INFO (bind
, type
);
4807 if (type_ptr
!= NULL
)
4808 sym
.st_other
= type_ptr
->internal_elf_sym
.st_other
;
4812 bed
->s
->swap_symbol_out (abfd
, &sym
, (PTR
) outbound_syms
);
4813 outbound_syms
+= bed
->s
->sizeof_sym
;
4817 symstrtab_hdr
->sh_size
= _bfd_stringtab_size (stt
);
4818 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
4820 symstrtab_hdr
->sh_flags
= 0;
4821 symstrtab_hdr
->sh_addr
= 0;
4822 symstrtab_hdr
->sh_entsize
= 0;
4823 symstrtab_hdr
->sh_link
= 0;
4824 symstrtab_hdr
->sh_info
= 0;
4825 symstrtab_hdr
->sh_addralign
= 1;
4830 /* Return the number of bytes required to hold the symtab vector.
4832 Note that we base it on the count plus 1, since we will null terminate
4833 the vector allocated based on this size. However, the ELF symbol table
4834 always has a dummy entry as symbol #0, so it ends up even. */
4837 _bfd_elf_get_symtab_upper_bound (abfd
)
4842 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4844 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
4845 symtab_size
= (symcount
- 1 + 1) * (sizeof (asymbol
*));
4851 _bfd_elf_get_dynamic_symtab_upper_bound (abfd
)
4856 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->dynsymtab_hdr
;
4858 if (elf_dynsymtab (abfd
) == 0)
4860 bfd_set_error (bfd_error_invalid_operation
);
4864 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
4865 symtab_size
= (symcount
- 1 + 1) * (sizeof (asymbol
*));
4871 _bfd_elf_get_reloc_upper_bound (abfd
, asect
)
4872 bfd
*abfd ATTRIBUTE_UNUSED
;
4875 return (asect
->reloc_count
+ 1) * sizeof (arelent
*);
4878 /* Canonicalize the relocs. */
4881 _bfd_elf_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
4889 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
4891 if (! bed
->s
->slurp_reloc_table (abfd
, section
, symbols
, false))
4894 tblptr
= section
->relocation
;
4895 for (i
= 0; i
< section
->reloc_count
; i
++)
4896 *relptr
++ = tblptr
++;
4900 return section
->reloc_count
;
4904 _bfd_elf_get_symtab (abfd
, alocation
)
4906 asymbol
**alocation
;
4908 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
4909 long symcount
= bed
->s
->slurp_symbol_table (abfd
, alocation
, false);
4912 bfd_get_symcount (abfd
) = symcount
;
4917 _bfd_elf_canonicalize_dynamic_symtab (abfd
, alocation
)
4919 asymbol
**alocation
;
4921 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
4922 return bed
->s
->slurp_symbol_table (abfd
, alocation
, true);
4925 /* Return the size required for the dynamic reloc entries. Any
4926 section that was actually installed in the BFD, and has type
4927 SHT_REL or SHT_RELA, and uses the dynamic symbol table, is
4928 considered to be a dynamic reloc section. */
4931 _bfd_elf_get_dynamic_reloc_upper_bound (abfd
)
4937 if (elf_dynsymtab (abfd
) == 0)
4939 bfd_set_error (bfd_error_invalid_operation
);
4943 ret
= sizeof (arelent
*);
4944 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
4945 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
4946 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_REL
4947 || elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
4948 ret
+= ((s
->_raw_size
/ elf_section_data (s
)->this_hdr
.sh_entsize
)
4949 * sizeof (arelent
*));
4954 /* Canonicalize the dynamic relocation entries. Note that we return
4955 the dynamic relocations as a single block, although they are
4956 actually associated with particular sections; the interface, which
4957 was designed for SunOS style shared libraries, expects that there
4958 is only one set of dynamic relocs. Any section that was actually
4959 installed in the BFD, and has type SHT_REL or SHT_RELA, and uses
4960 the dynamic symbol table, is considered to be a dynamic reloc
4964 _bfd_elf_canonicalize_dynamic_reloc (abfd
, storage
, syms
)
4969 boolean (*slurp_relocs
) PARAMS ((bfd
*, asection
*, asymbol
**, boolean
));
4973 if (elf_dynsymtab (abfd
) == 0)
4975 bfd_set_error (bfd_error_invalid_operation
);
4979 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
4981 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
4983 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
4984 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_REL
4985 || elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
4990 if (! (*slurp_relocs
) (abfd
, s
, syms
, true))
4992 count
= s
->_raw_size
/ elf_section_data (s
)->this_hdr
.sh_entsize
;
4994 for (i
= 0; i
< count
; i
++)
5005 /* Read in the version information. */
5008 _bfd_elf_slurp_version_tables (abfd
)
5011 bfd_byte
*contents
= NULL
;
5014 if (elf_dynverdef (abfd
) != 0)
5016 Elf_Internal_Shdr
*hdr
;
5017 Elf_External_Verdef
*everdef
;
5018 Elf_Internal_Verdef
*iverdef
;
5019 Elf_Internal_Verdef
*iverdefarr
;
5020 Elf_Internal_Verdef iverdefmem
;
5022 unsigned int maxidx
;
5024 hdr
= &elf_tdata (abfd
)->dynverdef_hdr
;
5026 contents
= (bfd_byte
*) bfd_malloc (hdr
->sh_size
);
5027 if (contents
== NULL
)
5029 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
5030 || bfd_bread ((PTR
) contents
, hdr
->sh_size
, abfd
) != hdr
->sh_size
)
5033 /* We know the number of entries in the section but not the maximum
5034 index. Therefore we have to run through all entries and find
5036 everdef
= (Elf_External_Verdef
*) contents
;
5038 for (i
= 0; i
< hdr
->sh_info
; ++i
)
5040 _bfd_elf_swap_verdef_in (abfd
, everdef
, &iverdefmem
);
5042 if ((iverdefmem
.vd_ndx
& ((unsigned) VERSYM_VERSION
)) > maxidx
)
5043 maxidx
= iverdefmem
.vd_ndx
& ((unsigned) VERSYM_VERSION
);
5045 everdef
= ((Elf_External_Verdef
*)
5046 ((bfd_byte
*) everdef
+ iverdefmem
.vd_next
));
5049 amt
= (bfd_size_type
) maxidx
* sizeof (Elf_Internal_Verdef
);
5050 elf_tdata (abfd
)->verdef
= (Elf_Internal_Verdef
*) bfd_zalloc (abfd
, amt
);
5051 if (elf_tdata (abfd
)->verdef
== NULL
)
5054 elf_tdata (abfd
)->cverdefs
= maxidx
;
5056 everdef
= (Elf_External_Verdef
*) contents
;
5057 iverdefarr
= elf_tdata (abfd
)->verdef
;
5058 for (i
= 0; i
< hdr
->sh_info
; i
++)
5060 Elf_External_Verdaux
*everdaux
;
5061 Elf_Internal_Verdaux
*iverdaux
;
5064 _bfd_elf_swap_verdef_in (abfd
, everdef
, &iverdefmem
);
5066 iverdef
= &iverdefarr
[(iverdefmem
.vd_ndx
& VERSYM_VERSION
) - 1];
5067 memcpy (iverdef
, &iverdefmem
, sizeof (Elf_Internal_Verdef
));
5069 iverdef
->vd_bfd
= abfd
;
5071 amt
= (bfd_size_type
) iverdef
->vd_cnt
* sizeof (Elf_Internal_Verdaux
);
5072 iverdef
->vd_auxptr
= (Elf_Internal_Verdaux
*) bfd_alloc (abfd
, amt
);
5073 if (iverdef
->vd_auxptr
== NULL
)
5076 everdaux
= ((Elf_External_Verdaux
*)
5077 ((bfd_byte
*) everdef
+ iverdef
->vd_aux
));
5078 iverdaux
= iverdef
->vd_auxptr
;
5079 for (j
= 0; j
< iverdef
->vd_cnt
; j
++, iverdaux
++)
5081 _bfd_elf_swap_verdaux_in (abfd
, everdaux
, iverdaux
);
5083 iverdaux
->vda_nodename
=
5084 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
5085 iverdaux
->vda_name
);
5086 if (iverdaux
->vda_nodename
== NULL
)
5089 if (j
+ 1 < iverdef
->vd_cnt
)
5090 iverdaux
->vda_nextptr
= iverdaux
+ 1;
5092 iverdaux
->vda_nextptr
= NULL
;
5094 everdaux
= ((Elf_External_Verdaux
*)
5095 ((bfd_byte
*) everdaux
+ iverdaux
->vda_next
));
5098 iverdef
->vd_nodename
= iverdef
->vd_auxptr
->vda_nodename
;
5100 if (i
+ 1 < hdr
->sh_info
)
5101 iverdef
->vd_nextdef
= iverdef
+ 1;
5103 iverdef
->vd_nextdef
= NULL
;
5105 everdef
= ((Elf_External_Verdef
*)
5106 ((bfd_byte
*) everdef
+ iverdef
->vd_next
));
5113 if (elf_dynverref (abfd
) != 0)
5115 Elf_Internal_Shdr
*hdr
;
5116 Elf_External_Verneed
*everneed
;
5117 Elf_Internal_Verneed
*iverneed
;
5120 hdr
= &elf_tdata (abfd
)->dynverref_hdr
;
5122 amt
= (bfd_size_type
) hdr
->sh_info
* sizeof (Elf_Internal_Verneed
);
5123 elf_tdata (abfd
)->verref
=
5124 (Elf_Internal_Verneed
*) bfd_zalloc (abfd
, amt
);
5125 if (elf_tdata (abfd
)->verref
== NULL
)
5128 elf_tdata (abfd
)->cverrefs
= hdr
->sh_info
;
5130 contents
= (bfd_byte
*) bfd_malloc (hdr
->sh_size
);
5131 if (contents
== NULL
)
5133 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
5134 || bfd_bread ((PTR
) contents
, hdr
->sh_size
, abfd
) != hdr
->sh_size
)
5137 everneed
= (Elf_External_Verneed
*) contents
;
5138 iverneed
= elf_tdata (abfd
)->verref
;
5139 for (i
= 0; i
< hdr
->sh_info
; i
++, iverneed
++)
5141 Elf_External_Vernaux
*evernaux
;
5142 Elf_Internal_Vernaux
*ivernaux
;
5145 _bfd_elf_swap_verneed_in (abfd
, everneed
, iverneed
);
5147 iverneed
->vn_bfd
= abfd
;
5149 iverneed
->vn_filename
=
5150 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
5152 if (iverneed
->vn_filename
== NULL
)
5155 amt
= iverneed
->vn_cnt
;
5156 amt
*= sizeof (Elf_Internal_Vernaux
);
5157 iverneed
->vn_auxptr
= (Elf_Internal_Vernaux
*) bfd_alloc (abfd
, amt
);
5159 evernaux
= ((Elf_External_Vernaux
*)
5160 ((bfd_byte
*) everneed
+ iverneed
->vn_aux
));
5161 ivernaux
= iverneed
->vn_auxptr
;
5162 for (j
= 0; j
< iverneed
->vn_cnt
; j
++, ivernaux
++)
5164 _bfd_elf_swap_vernaux_in (abfd
, evernaux
, ivernaux
);
5166 ivernaux
->vna_nodename
=
5167 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
5168 ivernaux
->vna_name
);
5169 if (ivernaux
->vna_nodename
== NULL
)
5172 if (j
+ 1 < iverneed
->vn_cnt
)
5173 ivernaux
->vna_nextptr
= ivernaux
+ 1;
5175 ivernaux
->vna_nextptr
= NULL
;
5177 evernaux
= ((Elf_External_Vernaux
*)
5178 ((bfd_byte
*) evernaux
+ ivernaux
->vna_next
));
5181 if (i
+ 1 < hdr
->sh_info
)
5182 iverneed
->vn_nextref
= iverneed
+ 1;
5184 iverneed
->vn_nextref
= NULL
;
5186 everneed
= ((Elf_External_Verneed
*)
5187 ((bfd_byte
*) everneed
+ iverneed
->vn_next
));
5197 if (contents
== NULL
)
5203 _bfd_elf_make_empty_symbol (abfd
)
5206 elf_symbol_type
*newsym
;
5207 bfd_size_type amt
= sizeof (elf_symbol_type
);
5209 newsym
= (elf_symbol_type
*) bfd_zalloc (abfd
, amt
);
5214 newsym
->symbol
.the_bfd
= abfd
;
5215 return &newsym
->symbol
;
5220 _bfd_elf_get_symbol_info (ignore_abfd
, symbol
, ret
)
5221 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
5225 bfd_symbol_info (symbol
, ret
);
5228 /* Return whether a symbol name implies a local symbol. Most targets
5229 use this function for the is_local_label_name entry point, but some
5233 _bfd_elf_is_local_label_name (abfd
, name
)
5234 bfd
*abfd ATTRIBUTE_UNUSED
;
5237 /* Normal local symbols start with ``.L''. */
5238 if (name
[0] == '.' && name
[1] == 'L')
5241 /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate
5242 DWARF debugging symbols starting with ``..''. */
5243 if (name
[0] == '.' && name
[1] == '.')
5246 /* gcc will sometimes generate symbols beginning with ``_.L_'' when
5247 emitting DWARF debugging output. I suspect this is actually a
5248 small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call
5249 ASM_GENERATE_INTERNAL_LABEL, and this causes the leading
5250 underscore to be emitted on some ELF targets). For ease of use,
5251 we treat such symbols as local. */
5252 if (name
[0] == '_' && name
[1] == '.' && name
[2] == 'L' && name
[3] == '_')
5259 _bfd_elf_get_lineno (ignore_abfd
, symbol
)
5260 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
5261 asymbol
*symbol ATTRIBUTE_UNUSED
;
5268 _bfd_elf_set_arch_mach (abfd
, arch
, machine
)
5270 enum bfd_architecture arch
;
5271 unsigned long machine
;
5273 /* If this isn't the right architecture for this backend, and this
5274 isn't the generic backend, fail. */
5275 if (arch
!= get_elf_backend_data (abfd
)->arch
5276 && arch
!= bfd_arch_unknown
5277 && get_elf_backend_data (abfd
)->arch
!= bfd_arch_unknown
)
5280 return bfd_default_set_arch_mach (abfd
, arch
, machine
);
5283 /* Find the function to a particular section and offset,
5284 for error reporting. */
5287 elf_find_function (abfd
, section
, symbols
, offset
,
5288 filename_ptr
, functionname_ptr
)
5289 bfd
*abfd ATTRIBUTE_UNUSED
;
5293 const char **filename_ptr
;
5294 const char **functionname_ptr
;
5296 const char *filename
;
5305 for (p
= symbols
; *p
!= NULL
; p
++)
5309 q
= (elf_symbol_type
*) *p
;
5311 if (bfd_get_section (&q
->symbol
) != section
)
5314 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
5319 filename
= bfd_asymbol_name (&q
->symbol
);
5323 if (q
->symbol
.section
== section
5324 && q
->symbol
.value
>= low_func
5325 && q
->symbol
.value
<= offset
)
5327 func
= (asymbol
*) q
;
5328 low_func
= q
->symbol
.value
;
5338 *filename_ptr
= filename
;
5339 if (functionname_ptr
)
5340 *functionname_ptr
= bfd_asymbol_name (func
);
5345 /* Find the nearest line to a particular section and offset,
5346 for error reporting. */
5349 _bfd_elf_find_nearest_line (abfd
, section
, symbols
, offset
,
5350 filename_ptr
, functionname_ptr
, line_ptr
)
5355 const char **filename_ptr
;
5356 const char **functionname_ptr
;
5357 unsigned int *line_ptr
;
5361 if (_bfd_dwarf1_find_nearest_line (abfd
, section
, symbols
, offset
,
5362 filename_ptr
, functionname_ptr
,
5365 if (!*functionname_ptr
)
5366 elf_find_function (abfd
, section
, symbols
, offset
,
5367 *filename_ptr
? NULL
: filename_ptr
,
5373 if (_bfd_dwarf2_find_nearest_line (abfd
, section
, symbols
, offset
,
5374 filename_ptr
, functionname_ptr
,
5376 &elf_tdata (abfd
)->dwarf2_find_line_info
))
5378 if (!*functionname_ptr
)
5379 elf_find_function (abfd
, section
, symbols
, offset
,
5380 *filename_ptr
? NULL
: filename_ptr
,
5386 if (! _bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
5387 &found
, filename_ptr
,
5388 functionname_ptr
, line_ptr
,
5389 &elf_tdata (abfd
)->line_info
))
5394 if (symbols
== NULL
)
5397 if (! elf_find_function (abfd
, section
, symbols
, offset
,
5398 filename_ptr
, functionname_ptr
))
5406 _bfd_elf_sizeof_headers (abfd
, reloc
)
5412 ret
= get_elf_backend_data (abfd
)->s
->sizeof_ehdr
;
5414 ret
+= get_program_header_size (abfd
);
5419 _bfd_elf_set_section_contents (abfd
, section
, location
, offset
, count
)
5424 bfd_size_type count
;
5426 Elf_Internal_Shdr
*hdr
;
5429 if (! abfd
->output_has_begun
5430 && ! _bfd_elf_compute_section_file_positions
5431 (abfd
, (struct bfd_link_info
*) NULL
))
5434 hdr
= &elf_section_data (section
)->this_hdr
;
5435 pos
= hdr
->sh_offset
+ offset
;
5436 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0
5437 || bfd_bwrite (location
, count
, abfd
) != count
)
5444 _bfd_elf_no_info_to_howto (abfd
, cache_ptr
, dst
)
5445 bfd
*abfd ATTRIBUTE_UNUSED
;
5446 arelent
*cache_ptr ATTRIBUTE_UNUSED
;
5447 Elf_Internal_Rela
*dst ATTRIBUTE_UNUSED
;
5454 _bfd_elf_no_info_to_howto_rel (abfd
, cache_ptr
, dst
)
5457 Elf_Internal_Rel
*dst
;
5463 /* Try to convert a non-ELF reloc into an ELF one. */
5466 _bfd_elf_validate_reloc (abfd
, areloc
)
5470 /* Check whether we really have an ELF howto. */
5472 if ((*areloc
->sym_ptr_ptr
)->the_bfd
->xvec
!= abfd
->xvec
)
5474 bfd_reloc_code_real_type code
;
5475 reloc_howto_type
*howto
;
5477 /* Alien reloc: Try to determine its type to replace it with an
5478 equivalent ELF reloc. */
5480 if (areloc
->howto
->pc_relative
)
5482 switch (areloc
->howto
->bitsize
)
5485 code
= BFD_RELOC_8_PCREL
;
5488 code
= BFD_RELOC_12_PCREL
;
5491 code
= BFD_RELOC_16_PCREL
;
5494 code
= BFD_RELOC_24_PCREL
;
5497 code
= BFD_RELOC_32_PCREL
;
5500 code
= BFD_RELOC_64_PCREL
;
5506 howto
= bfd_reloc_type_lookup (abfd
, code
);
5508 if (areloc
->howto
->pcrel_offset
!= howto
->pcrel_offset
)
5510 if (howto
->pcrel_offset
)
5511 areloc
->addend
+= areloc
->address
;
5513 areloc
->addend
-= areloc
->address
; /* addend is unsigned!! */
5518 switch (areloc
->howto
->bitsize
)
5524 code
= BFD_RELOC_14
;
5527 code
= BFD_RELOC_16
;
5530 code
= BFD_RELOC_26
;
5533 code
= BFD_RELOC_32
;
5536 code
= BFD_RELOC_64
;
5542 howto
= bfd_reloc_type_lookup (abfd
, code
);
5546 areloc
->howto
= howto
;
5554 (*_bfd_error_handler
)
5555 (_("%s: unsupported relocation type %s"),
5556 bfd_archive_filename (abfd
), areloc
->howto
->name
);
5557 bfd_set_error (bfd_error_bad_value
);
5562 _bfd_elf_close_and_cleanup (abfd
)
5565 if (bfd_get_format (abfd
) == bfd_object
)
5567 if (elf_shstrtab (abfd
) != NULL
)
5568 _bfd_elf_strtab_free (elf_shstrtab (abfd
));
5571 return _bfd_generic_close_and_cleanup (abfd
);
5574 /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY
5575 in the relocation's offset. Thus we cannot allow any sort of sanity
5576 range-checking to interfere. There is nothing else to do in processing
5579 bfd_reloc_status_type
5580 _bfd_elf_rel_vtable_reloc_fn (abfd
, re
, symbol
, data
, is
, obfd
, errmsg
)
5581 bfd
*abfd ATTRIBUTE_UNUSED
;
5582 arelent
*re ATTRIBUTE_UNUSED
;
5583 struct symbol_cache_entry
*symbol ATTRIBUTE_UNUSED
;
5584 PTR data ATTRIBUTE_UNUSED
;
5585 asection
*is ATTRIBUTE_UNUSED
;
5586 bfd
*obfd ATTRIBUTE_UNUSED
;
5587 char **errmsg ATTRIBUTE_UNUSED
;
5589 return bfd_reloc_ok
;
5592 /* Elf core file support. Much of this only works on native
5593 toolchains, since we rely on knowing the
5594 machine-dependent procfs structure in order to pick
5595 out details about the corefile. */
5597 #ifdef HAVE_SYS_PROCFS_H
5598 # include <sys/procfs.h>
5601 /* FIXME: this is kinda wrong, but it's what gdb wants. */
5604 elfcore_make_pid (abfd
)
5607 return ((elf_tdata (abfd
)->core_lwpid
<< 16)
5608 + (elf_tdata (abfd
)->core_pid
));
5611 /* If there isn't a section called NAME, make one, using
5612 data from SECT. Note, this function will generate a
5613 reference to NAME, so you shouldn't deallocate or
5617 elfcore_maybe_make_sect (abfd
, name
, sect
)
5624 if (bfd_get_section_by_name (abfd
, name
) != NULL
)
5627 sect2
= bfd_make_section (abfd
, name
);
5631 sect2
->_raw_size
= sect
->_raw_size
;
5632 sect2
->filepos
= sect
->filepos
;
5633 sect2
->flags
= sect
->flags
;
5634 sect2
->alignment_power
= sect
->alignment_power
;
5638 /* Create a pseudosection containing SIZE bytes at FILEPOS. This
5639 actually creates up to two pseudosections:
5640 - For the single-threaded case, a section named NAME, unless
5641 such a section already exists.
5642 - For the multi-threaded case, a section named "NAME/PID", where
5643 PID is elfcore_make_pid (abfd).
5644 Both pseudosections have identical contents. */
5646 _bfd_elfcore_make_pseudosection (abfd
, name
, size
, filepos
)
5653 char *threaded_name
;
5656 /* Build the section name. */
5658 sprintf (buf
, "%s/%d", name
, elfcore_make_pid (abfd
));
5659 threaded_name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
5660 if (threaded_name
== NULL
)
5662 strcpy (threaded_name
, buf
);
5664 sect
= bfd_make_section (abfd
, threaded_name
);
5667 sect
->_raw_size
= size
;
5668 sect
->filepos
= filepos
;
5669 sect
->flags
= SEC_HAS_CONTENTS
;
5670 sect
->alignment_power
= 2;
5672 return elfcore_maybe_make_sect (abfd
, name
, sect
);
5675 /* prstatus_t exists on:
5677 linux 2.[01] + glibc
5681 #if defined (HAVE_PRSTATUS_T)
5682 static boolean elfcore_grok_prstatus
PARAMS ((bfd
*, Elf_Internal_Note
*));
5685 elfcore_grok_prstatus (abfd
, note
)
5687 Elf_Internal_Note
*note
;
5692 if (note
->descsz
== sizeof (prstatus_t
))
5696 raw_size
= sizeof (prstat
.pr_reg
);
5697 offset
= offsetof (prstatus_t
, pr_reg
);
5698 memcpy (&prstat
, note
->descdata
, sizeof (prstat
));
5700 elf_tdata (abfd
)->core_signal
= prstat
.pr_cursig
;
5701 elf_tdata (abfd
)->core_pid
= prstat
.pr_pid
;
5703 /* pr_who exists on:
5706 pr_who doesn't exist on:
5709 #if defined (HAVE_PRSTATUS_T_PR_WHO)
5710 elf_tdata (abfd
)->core_lwpid
= prstat
.pr_who
;
5713 #if defined (HAVE_PRSTATUS32_T)
5714 else if (note
->descsz
== sizeof (prstatus32_t
))
5716 /* 64-bit host, 32-bit corefile */
5717 prstatus32_t prstat
;
5719 raw_size
= sizeof (prstat
.pr_reg
);
5720 offset
= offsetof (prstatus32_t
, pr_reg
);
5721 memcpy (&prstat
, note
->descdata
, sizeof (prstat
));
5723 elf_tdata (abfd
)->core_signal
= prstat
.pr_cursig
;
5724 elf_tdata (abfd
)->core_pid
= prstat
.pr_pid
;
5726 /* pr_who exists on:
5729 pr_who doesn't exist on:
5732 #if defined (HAVE_PRSTATUS32_T_PR_WHO)
5733 elf_tdata (abfd
)->core_lwpid
= prstat
.pr_who
;
5736 #endif /* HAVE_PRSTATUS32_T */
5739 /* Fail - we don't know how to handle any other
5740 note size (ie. data object type). */
5744 /* Make a ".reg/999" section and a ".reg" section. */
5745 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
5746 raw_size
, note
->descpos
+ offset
);
5748 #endif /* defined (HAVE_PRSTATUS_T) */
5750 /* Create a pseudosection containing the exact contents of NOTE. */
5752 elfcore_make_note_pseudosection (abfd
, name
, note
)
5755 Elf_Internal_Note
*note
;
5757 return _bfd_elfcore_make_pseudosection (abfd
, name
,
5758 note
->descsz
, note
->descpos
);
5761 /* There isn't a consistent prfpregset_t across platforms,
5762 but it doesn't matter, because we don't have to pick this
5763 data structure apart. */
5766 elfcore_grok_prfpreg (abfd
, note
)
5768 Elf_Internal_Note
*note
;
5770 return elfcore_make_note_pseudosection (abfd
, ".reg2", note
);
5773 /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note
5774 type of 5 (NT_PRXFPREG). Just include the whole note's contents
5778 elfcore_grok_prxfpreg (abfd
, note
)
5780 Elf_Internal_Note
*note
;
5782 return elfcore_make_note_pseudosection (abfd
, ".reg-xfp", note
);
5785 #if defined (HAVE_PRPSINFO_T)
5786 typedef prpsinfo_t elfcore_psinfo_t
;
5787 #if defined (HAVE_PRPSINFO32_T) /* Sparc64 cross Sparc32 */
5788 typedef prpsinfo32_t elfcore_psinfo32_t
;
5792 #if defined (HAVE_PSINFO_T)
5793 typedef psinfo_t elfcore_psinfo_t
;
5794 #if defined (HAVE_PSINFO32_T) /* Sparc64 cross Sparc32 */
5795 typedef psinfo32_t elfcore_psinfo32_t
;
5799 /* return a malloc'ed copy of a string at START which is at
5800 most MAX bytes long, possibly without a terminating '\0'.
5801 the copy will always have a terminating '\0'. */
5804 _bfd_elfcore_strndup (abfd
, start
, max
)
5810 char *end
= memchr (start
, '\0', max
);
5818 dups
= bfd_alloc (abfd
, (bfd_size_type
) len
+ 1);
5822 memcpy (dups
, start
, len
);
5828 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
5829 static boolean elfcore_grok_psinfo
PARAMS ((bfd
*, Elf_Internal_Note
*));
5832 elfcore_grok_psinfo (abfd
, note
)
5834 Elf_Internal_Note
*note
;
5836 if (note
->descsz
== sizeof (elfcore_psinfo_t
))
5838 elfcore_psinfo_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
));
5850 #if defined (HAVE_PRPSINFO32_T) || defined (HAVE_PSINFO32_T)
5851 else if (note
->descsz
== sizeof (elfcore_psinfo32_t
))
5853 /* 64-bit host, 32-bit corefile */
5854 elfcore_psinfo32_t psinfo
;
5856 memcpy (&psinfo
, note
->descdata
, sizeof (psinfo
));
5858 elf_tdata (abfd
)->core_program
5859 = _bfd_elfcore_strndup (abfd
, psinfo
.pr_fname
,
5860 sizeof (psinfo
.pr_fname
));
5862 elf_tdata (abfd
)->core_command
5863 = _bfd_elfcore_strndup (abfd
, psinfo
.pr_psargs
,
5864 sizeof (psinfo
.pr_psargs
));
5870 /* Fail - we don't know how to handle any other
5871 note size (ie. data object type). */
5875 /* Note that for some reason, a spurious space is tacked
5876 onto the end of the args in some (at least one anyway)
5877 implementations, so strip it off if it exists. */
5880 char *command
= elf_tdata (abfd
)->core_command
;
5881 int n
= strlen (command
);
5883 if (0 < n
&& command
[n
- 1] == ' ')
5884 command
[n
- 1] = '\0';
5889 #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */
5891 #if defined (HAVE_PSTATUS_T)
5893 elfcore_grok_pstatus (abfd
, note
)
5895 Elf_Internal_Note
*note
;
5897 if (note
->descsz
== sizeof (pstatus_t
)
5898 #if defined (HAVE_PXSTATUS_T)
5899 || note
->descsz
== sizeof (pxstatus_t
)
5905 memcpy (&pstat
, note
->descdata
, sizeof (pstat
));
5907 elf_tdata (abfd
)->core_pid
= pstat
.pr_pid
;
5909 #if defined (HAVE_PSTATUS32_T)
5910 else if (note
->descsz
== sizeof (pstatus32_t
))
5912 /* 64-bit host, 32-bit corefile */
5915 memcpy (&pstat
, note
->descdata
, sizeof (pstat
));
5917 elf_tdata (abfd
)->core_pid
= pstat
.pr_pid
;
5920 /* Could grab some more details from the "representative"
5921 lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an
5922 NT_LWPSTATUS note, presumably. */
5926 #endif /* defined (HAVE_PSTATUS_T) */
5928 #if defined (HAVE_LWPSTATUS_T)
5930 elfcore_grok_lwpstatus (abfd
, note
)
5932 Elf_Internal_Note
*note
;
5934 lwpstatus_t lwpstat
;
5939 if (note
->descsz
!= sizeof (lwpstat
)
5940 #if defined (HAVE_LWPXSTATUS_T)
5941 && note
->descsz
!= sizeof (lwpxstatus_t
)
5946 memcpy (&lwpstat
, note
->descdata
, sizeof (lwpstat
));
5948 elf_tdata (abfd
)->core_lwpid
= lwpstat
.pr_lwpid
;
5949 elf_tdata (abfd
)->core_signal
= lwpstat
.pr_cursig
;
5951 /* Make a ".reg/999" section. */
5953 sprintf (buf
, ".reg/%d", elfcore_make_pid (abfd
));
5954 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
5959 sect
= bfd_make_section (abfd
, name
);
5963 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
5964 sect
->_raw_size
= sizeof (lwpstat
.pr_context
.uc_mcontext
.gregs
);
5965 sect
->filepos
= note
->descpos
5966 + offsetof (lwpstatus_t
, pr_context
.uc_mcontext
.gregs
);
5969 #if defined (HAVE_LWPSTATUS_T_PR_REG)
5970 sect
->_raw_size
= sizeof (lwpstat
.pr_reg
);
5971 sect
->filepos
= note
->descpos
+ offsetof (lwpstatus_t
, pr_reg
);
5974 sect
->flags
= SEC_HAS_CONTENTS
;
5975 sect
->alignment_power
= 2;
5977 if (!elfcore_maybe_make_sect (abfd
, ".reg", sect
))
5980 /* Make a ".reg2/999" section */
5982 sprintf (buf
, ".reg2/%d", elfcore_make_pid (abfd
));
5983 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
5988 sect
= bfd_make_section (abfd
, name
);
5992 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
5993 sect
->_raw_size
= sizeof (lwpstat
.pr_context
.uc_mcontext
.fpregs
);
5994 sect
->filepos
= note
->descpos
5995 + offsetof (lwpstatus_t
, pr_context
.uc_mcontext
.fpregs
);
5998 #if defined (HAVE_LWPSTATUS_T_PR_FPREG)
5999 sect
->_raw_size
= sizeof (lwpstat
.pr_fpreg
);
6000 sect
->filepos
= note
->descpos
+ offsetof (lwpstatus_t
, pr_fpreg
);
6003 sect
->flags
= SEC_HAS_CONTENTS
;
6004 sect
->alignment_power
= 2;
6006 return elfcore_maybe_make_sect (abfd
, ".reg2", sect
);
6008 #endif /* defined (HAVE_LWPSTATUS_T) */
6010 #if defined (HAVE_WIN32_PSTATUS_T)
6012 elfcore_grok_win32pstatus (abfd
, note
)
6014 Elf_Internal_Note
*note
;
6019 win32_pstatus_t pstatus
;
6021 if (note
->descsz
< sizeof (pstatus
))
6024 memcpy (&pstatus
, note
->descdata
, note
->descsz
);
6026 switch (pstatus
.data_type
)
6028 case NOTE_INFO_PROCESS
:
6029 /* FIXME: need to add ->core_command. */
6030 elf_tdata (abfd
)->core_signal
= pstatus
.data
.process_info
.signal
;
6031 elf_tdata (abfd
)->core_pid
= pstatus
.data
.process_info
.pid
;
6034 case NOTE_INFO_THREAD
:
6035 /* Make a ".reg/999" section. */
6036 sprintf (buf
, ".reg/%d", pstatus
.data
.thread_info
.tid
);
6038 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
6044 sect
= bfd_make_section (abfd
, name
);
6048 sect
->_raw_size
= sizeof (pstatus
.data
.thread_info
.thread_context
);
6049 sect
->filepos
= (note
->descpos
6050 + offsetof (struct win32_pstatus
,
6051 data
.thread_info
.thread_context
));
6052 sect
->flags
= SEC_HAS_CONTENTS
;
6053 sect
->alignment_power
= 2;
6055 if (pstatus
.data
.thread_info
.is_active_thread
)
6056 if (! elfcore_maybe_make_sect (abfd
, ".reg", sect
))
6060 case NOTE_INFO_MODULE
:
6061 /* Make a ".module/xxxxxxxx" section. */
6062 sprintf (buf
, ".module/%08x", pstatus
.data
.module_info
.base_address
);
6064 name
= bfd_alloc (abfd
, (bfd_size_type
) strlen (buf
) + 1);
6070 sect
= bfd_make_section (abfd
, name
);
6075 sect
->_raw_size
= note
->descsz
;
6076 sect
->filepos
= note
->descpos
;
6077 sect
->flags
= SEC_HAS_CONTENTS
;
6078 sect
->alignment_power
= 2;
6087 #endif /* HAVE_WIN32_PSTATUS_T */
6090 elfcore_grok_note (abfd
, note
)
6092 Elf_Internal_Note
*note
;
6094 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
6102 if (bed
->elf_backend_grok_prstatus
)
6103 if ((*bed
->elf_backend_grok_prstatus
) (abfd
, note
))
6105 #if defined (HAVE_PRSTATUS_T)
6106 return elfcore_grok_prstatus (abfd
, note
);
6111 #if defined (HAVE_PSTATUS_T)
6113 return elfcore_grok_pstatus (abfd
, note
);
6116 #if defined (HAVE_LWPSTATUS_T)
6118 return elfcore_grok_lwpstatus (abfd
, note
);
6121 case NT_FPREGSET
: /* FIXME: rename to NT_PRFPREG */
6122 return elfcore_grok_prfpreg (abfd
, note
);
6124 #if defined (HAVE_WIN32_PSTATUS_T)
6125 case NT_WIN32PSTATUS
:
6126 return elfcore_grok_win32pstatus (abfd
, note
);
6129 case NT_PRXFPREG
: /* Linux SSE extension */
6130 if (note
->namesz
== 5
6131 && ! strcmp (note
->namedata
, "LINUX"))
6132 return elfcore_grok_prxfpreg (abfd
, note
);
6138 if (bed
->elf_backend_grok_psinfo
)
6139 if ((*bed
->elf_backend_grok_psinfo
) (abfd
, note
))
6141 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
6142 return elfcore_grok_psinfo (abfd
, note
);
6150 elfcore_read_notes (abfd
, offset
, size
)
6161 if (bfd_seek (abfd
, offset
, SEEK_SET
) != 0)
6164 buf
= bfd_malloc (size
);
6168 if (bfd_bread (buf
, size
, abfd
) != size
)
6176 while (p
< buf
+ size
)
6178 /* FIXME: bad alignment assumption. */
6179 Elf_External_Note
*xnp
= (Elf_External_Note
*) p
;
6180 Elf_Internal_Note in
;
6182 in
.type
= H_GET_32 (abfd
, xnp
->type
);
6184 in
.namesz
= H_GET_32 (abfd
, xnp
->namesz
);
6185 in
.namedata
= xnp
->name
;
6187 in
.descsz
= H_GET_32 (abfd
, xnp
->descsz
);
6188 in
.descdata
= in
.namedata
+ BFD_ALIGN (in
.namesz
, 4);
6189 in
.descpos
= offset
+ (in
.descdata
- buf
);
6191 if (! elfcore_grok_note (abfd
, &in
))
6194 p
= in
.descdata
+ BFD_ALIGN (in
.descsz
, 4);
6201 /* Providing external access to the ELF program header table. */
6203 /* Return an upper bound on the number of bytes required to store a
6204 copy of ABFD's program header table entries. Return -1 if an error
6205 occurs; bfd_get_error will return an appropriate code. */
6208 bfd_get_elf_phdr_upper_bound (abfd
)
6211 if (abfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
6213 bfd_set_error (bfd_error_wrong_format
);
6217 return elf_elfheader (abfd
)->e_phnum
* sizeof (Elf_Internal_Phdr
);
6220 /* Copy ABFD's program header table entries to *PHDRS. The entries
6221 will be stored as an array of Elf_Internal_Phdr structures, as
6222 defined in include/elf/internal.h. To find out how large the
6223 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
6225 Return the number of program header table entries read, or -1 if an
6226 error occurs; bfd_get_error will return an appropriate code. */
6229 bfd_get_elf_phdrs (abfd
, phdrs
)
6235 if (abfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
6237 bfd_set_error (bfd_error_wrong_format
);
6241 num_phdrs
= elf_elfheader (abfd
)->e_phnum
;
6242 memcpy (phdrs
, elf_tdata (abfd
)->phdr
,
6243 num_phdrs
* sizeof (Elf_Internal_Phdr
));
6249 _bfd_elf_sprintf_vma (abfd
, buf
, value
)
6250 bfd
*abfd ATTRIBUTE_UNUSED
;
6255 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
6257 i_ehdrp
= elf_elfheader (abfd
);
6258 if (i_ehdrp
== NULL
)
6259 sprintf_vma (buf
, value
);
6262 if (i_ehdrp
->e_ident
[EI_CLASS
] == ELFCLASS64
)
6264 #if BFD_HOST_64BIT_LONG
6265 sprintf (buf
, "%016lx", value
);
6267 sprintf (buf
, "%08lx%08lx", _bfd_int64_high (value
),
6268 _bfd_int64_low (value
));
6272 sprintf (buf
, "%08lx", (unsigned long) (value
& 0xffffffff));
6275 sprintf_vma (buf
, value
);
6280 _bfd_elf_fprintf_vma (abfd
, stream
, value
)
6281 bfd
*abfd ATTRIBUTE_UNUSED
;
6286 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
6288 i_ehdrp
= elf_elfheader (abfd
);
6289 if (i_ehdrp
== NULL
)
6290 fprintf_vma ((FILE *) stream
, value
);
6293 if (i_ehdrp
->e_ident
[EI_CLASS
] == ELFCLASS64
)
6295 #if BFD_HOST_64BIT_LONG
6296 fprintf ((FILE *) stream
, "%016lx", value
);
6298 fprintf ((FILE *) stream
, "%08lx%08lx",
6299 _bfd_int64_high (value
), _bfd_int64_low (value
));
6303 fprintf ((FILE *) stream
, "%08lx",
6304 (unsigned long) (value
& 0xffffffff));
6307 fprintf_vma ((FILE *) stream
, value
);
6311 enum elf_reloc_type_class
6312 _bfd_elf_reloc_type_class (rela
)
6313 const Elf_Internal_Rela
*rela ATTRIBUTE_UNUSED
;
6315 return reloc_class_normal
;