1 /* ELF executable support for BFD.
2 Copyright 1993, 94, 95, 96, 97, 98, 1999 Free Software Foundation, Inc.
4 This file is part of BFD, the Binary File Descriptor library.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
25 BFD support for ELF formats is being worked on.
26 Currently, the best supported back ends are for sparc and i386
27 (running svr4 or Solaris 2).
29 Documentation of the internals of the support code still needs
30 to be written. The code is changing quickly enough that we
41 static INLINE
struct elf_segment_map
*make_mapping
42 PARAMS ((bfd
*, asection
**, unsigned int, unsigned int, boolean
));
43 static boolean map_sections_to_segments
PARAMS ((bfd
*));
44 static int elf_sort_sections
PARAMS ((const PTR
, const PTR
));
45 static boolean assign_file_positions_for_segments
PARAMS ((bfd
*));
46 static boolean assign_file_positions_except_relocs
PARAMS ((bfd
*));
47 static boolean prep_headers
PARAMS ((bfd
*));
48 static boolean swap_out_syms
PARAMS ((bfd
*, struct bfd_strtab_hash
**, int));
49 static boolean copy_private_bfd_data
PARAMS ((bfd
*, bfd
*));
50 static char *elf_read
PARAMS ((bfd
*, long, unsigned int));
51 static void elf_fake_sections
PARAMS ((bfd
*, asection
*, PTR
));
52 static boolean assign_section_numbers
PARAMS ((bfd
*));
53 static INLINE
int sym_is_global
PARAMS ((bfd
*, asymbol
*));
54 static boolean elf_map_symbols
PARAMS ((bfd
*));
55 static bfd_size_type get_program_header_size
PARAMS ((bfd
*));
56 static boolean elfcore_read_notes
PARAMS ((bfd
*, bfd_vma
, bfd_vma
));
58 /* Swap version information in and out. The version information is
59 currently size independent. If that ever changes, this code will
60 need to move into elfcode.h. */
62 /* Swap in a Verdef structure. */
65 _bfd_elf_swap_verdef_in (abfd
, src
, dst
)
67 const Elf_External_Verdef
*src
;
68 Elf_Internal_Verdef
*dst
;
70 dst
->vd_version
= bfd_h_get_16 (abfd
, src
->vd_version
);
71 dst
->vd_flags
= bfd_h_get_16 (abfd
, src
->vd_flags
);
72 dst
->vd_ndx
= bfd_h_get_16 (abfd
, src
->vd_ndx
);
73 dst
->vd_cnt
= bfd_h_get_16 (abfd
, src
->vd_cnt
);
74 dst
->vd_hash
= bfd_h_get_32 (abfd
, src
->vd_hash
);
75 dst
->vd_aux
= bfd_h_get_32 (abfd
, src
->vd_aux
);
76 dst
->vd_next
= bfd_h_get_32 (abfd
, src
->vd_next
);
79 /* Swap out a Verdef structure. */
82 _bfd_elf_swap_verdef_out (abfd
, src
, dst
)
84 const Elf_Internal_Verdef
*src
;
85 Elf_External_Verdef
*dst
;
87 bfd_h_put_16 (abfd
, src
->vd_version
, dst
->vd_version
);
88 bfd_h_put_16 (abfd
, src
->vd_flags
, dst
->vd_flags
);
89 bfd_h_put_16 (abfd
, src
->vd_ndx
, dst
->vd_ndx
);
90 bfd_h_put_16 (abfd
, src
->vd_cnt
, dst
->vd_cnt
);
91 bfd_h_put_32 (abfd
, src
->vd_hash
, dst
->vd_hash
);
92 bfd_h_put_32 (abfd
, src
->vd_aux
, dst
->vd_aux
);
93 bfd_h_put_32 (abfd
, src
->vd_next
, dst
->vd_next
);
96 /* Swap in a Verdaux structure. */
99 _bfd_elf_swap_verdaux_in (abfd
, src
, dst
)
101 const Elf_External_Verdaux
*src
;
102 Elf_Internal_Verdaux
*dst
;
104 dst
->vda_name
= bfd_h_get_32 (abfd
, src
->vda_name
);
105 dst
->vda_next
= bfd_h_get_32 (abfd
, src
->vda_next
);
108 /* Swap out a Verdaux structure. */
111 _bfd_elf_swap_verdaux_out (abfd
, src
, dst
)
113 const Elf_Internal_Verdaux
*src
;
114 Elf_External_Verdaux
*dst
;
116 bfd_h_put_32 (abfd
, src
->vda_name
, dst
->vda_name
);
117 bfd_h_put_32 (abfd
, src
->vda_next
, dst
->vda_next
);
120 /* Swap in a Verneed structure. */
123 _bfd_elf_swap_verneed_in (abfd
, src
, dst
)
125 const Elf_External_Verneed
*src
;
126 Elf_Internal_Verneed
*dst
;
128 dst
->vn_version
= bfd_h_get_16 (abfd
, src
->vn_version
);
129 dst
->vn_cnt
= bfd_h_get_16 (abfd
, src
->vn_cnt
);
130 dst
->vn_file
= bfd_h_get_32 (abfd
, src
->vn_file
);
131 dst
->vn_aux
= bfd_h_get_32 (abfd
, src
->vn_aux
);
132 dst
->vn_next
= bfd_h_get_32 (abfd
, src
->vn_next
);
135 /* Swap out a Verneed structure. */
138 _bfd_elf_swap_verneed_out (abfd
, src
, dst
)
140 const Elf_Internal_Verneed
*src
;
141 Elf_External_Verneed
*dst
;
143 bfd_h_put_16 (abfd
, src
->vn_version
, dst
->vn_version
);
144 bfd_h_put_16 (abfd
, src
->vn_cnt
, dst
->vn_cnt
);
145 bfd_h_put_32 (abfd
, src
->vn_file
, dst
->vn_file
);
146 bfd_h_put_32 (abfd
, src
->vn_aux
, dst
->vn_aux
);
147 bfd_h_put_32 (abfd
, src
->vn_next
, dst
->vn_next
);
150 /* Swap in a Vernaux structure. */
153 _bfd_elf_swap_vernaux_in (abfd
, src
, dst
)
155 const Elf_External_Vernaux
*src
;
156 Elf_Internal_Vernaux
*dst
;
158 dst
->vna_hash
= bfd_h_get_32 (abfd
, src
->vna_hash
);
159 dst
->vna_flags
= bfd_h_get_16 (abfd
, src
->vna_flags
);
160 dst
->vna_other
= bfd_h_get_16 (abfd
, src
->vna_other
);
161 dst
->vna_name
= bfd_h_get_32 (abfd
, src
->vna_name
);
162 dst
->vna_next
= bfd_h_get_32 (abfd
, src
->vna_next
);
165 /* Swap out a Vernaux structure. */
168 _bfd_elf_swap_vernaux_out (abfd
, src
, dst
)
170 const Elf_Internal_Vernaux
*src
;
171 Elf_External_Vernaux
*dst
;
173 bfd_h_put_32 (abfd
, src
->vna_hash
, dst
->vna_hash
);
174 bfd_h_put_16 (abfd
, src
->vna_flags
, dst
->vna_flags
);
175 bfd_h_put_16 (abfd
, src
->vna_other
, dst
->vna_other
);
176 bfd_h_put_32 (abfd
, src
->vna_name
, dst
->vna_name
);
177 bfd_h_put_32 (abfd
, src
->vna_next
, dst
->vna_next
);
180 /* Swap in a Versym structure. */
183 _bfd_elf_swap_versym_in (abfd
, src
, dst
)
185 const Elf_External_Versym
*src
;
186 Elf_Internal_Versym
*dst
;
188 dst
->vs_vers
= bfd_h_get_16 (abfd
, src
->vs_vers
);
191 /* Swap out a Versym structure. */
194 _bfd_elf_swap_versym_out (abfd
, src
, dst
)
196 const Elf_Internal_Versym
*src
;
197 Elf_External_Versym
*dst
;
199 bfd_h_put_16 (abfd
, src
->vs_vers
, dst
->vs_vers
);
202 /* Standard ELF hash function. Do not change this function; you will
203 cause invalid hash tables to be generated. */
206 bfd_elf_hash (namearg
)
209 const unsigned char *name
= (const unsigned char *) namearg
;
214 while ((ch
= *name
++) != '\0')
217 if ((g
= (h
& 0xf0000000)) != 0)
220 /* The ELF ABI says `h &= ~g', but this is equivalent in
221 this case and on some machines one insn instead of two. */
228 /* Read a specified number of bytes at a specified offset in an ELF
229 file, into a newly allocated buffer, and return a pointer to the
233 elf_read (abfd
, offset
, size
)
240 if ((buf
= bfd_alloc (abfd
, size
)) == NULL
)
242 if (bfd_seek (abfd
, offset
, SEEK_SET
) == -1)
244 if (bfd_read ((PTR
) buf
, size
, 1, abfd
) != size
)
246 if (bfd_get_error () != bfd_error_system_call
)
247 bfd_set_error (bfd_error_file_truncated
);
254 bfd_elf_mkobject (abfd
)
257 /* this just does initialization */
258 /* coff_mkobject zalloc's space for tdata.coff_obj_data ... */
259 elf_tdata (abfd
) = (struct elf_obj_tdata
*)
260 bfd_zalloc (abfd
, sizeof (struct elf_obj_tdata
));
261 if (elf_tdata (abfd
) == 0)
263 /* since everything is done at close time, do we need any
270 bfd_elf_mkcorefile (abfd
)
273 /* I think this can be done just like an object file. */
274 return bfd_elf_mkobject (abfd
);
278 bfd_elf_get_str_section (abfd
, shindex
)
280 unsigned int shindex
;
282 Elf_Internal_Shdr
**i_shdrp
;
283 char *shstrtab
= NULL
;
285 unsigned int shstrtabsize
;
287 i_shdrp
= elf_elfsections (abfd
);
288 if (i_shdrp
== 0 || i_shdrp
[shindex
] == 0)
291 shstrtab
= (char *) i_shdrp
[shindex
]->contents
;
292 if (shstrtab
== NULL
)
294 /* No cached one, attempt to read, and cache what we read. */
295 offset
= i_shdrp
[shindex
]->sh_offset
;
296 shstrtabsize
= i_shdrp
[shindex
]->sh_size
;
297 shstrtab
= elf_read (abfd
, offset
, shstrtabsize
);
298 i_shdrp
[shindex
]->contents
= (PTR
) shstrtab
;
304 bfd_elf_string_from_elf_section (abfd
, shindex
, strindex
)
306 unsigned int shindex
;
307 unsigned int strindex
;
309 Elf_Internal_Shdr
*hdr
;
314 hdr
= elf_elfsections (abfd
)[shindex
];
316 if (hdr
->contents
== NULL
317 && bfd_elf_get_str_section (abfd
, shindex
) == NULL
)
320 if (strindex
>= hdr
->sh_size
)
322 (*_bfd_error_handler
)
323 (_("%s: invalid string offset %u >= %lu for section `%s'"),
324 bfd_get_filename (abfd
), strindex
, (unsigned long) hdr
->sh_size
,
325 ((shindex
== elf_elfheader(abfd
)->e_shstrndx
326 && strindex
== hdr
->sh_name
)
328 : elf_string_from_elf_strtab (abfd
, hdr
->sh_name
)));
332 return ((char *) hdr
->contents
) + strindex
;
335 /* Make a BFD section from an ELF section. We store a pointer to the
336 BFD section in the bfd_section field of the header. */
339 _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
)
341 Elf_Internal_Shdr
*hdr
;
347 if (hdr
->bfd_section
!= NULL
)
349 BFD_ASSERT (strcmp (name
,
350 bfd_get_section_name (abfd
, hdr
->bfd_section
)) == 0);
354 newsect
= bfd_make_section_anyway (abfd
, name
);
358 newsect
->filepos
= hdr
->sh_offset
;
360 if (! bfd_set_section_vma (abfd
, newsect
, hdr
->sh_addr
)
361 || ! bfd_set_section_size (abfd
, newsect
, hdr
->sh_size
)
362 || ! bfd_set_section_alignment (abfd
, newsect
,
363 bfd_log2 (hdr
->sh_addralign
)))
366 flags
= SEC_NO_FLAGS
;
367 if (hdr
->sh_type
!= SHT_NOBITS
)
368 flags
|= SEC_HAS_CONTENTS
;
369 if ((hdr
->sh_flags
& SHF_ALLOC
) != 0)
372 if (hdr
->sh_type
!= SHT_NOBITS
)
375 if ((hdr
->sh_flags
& SHF_WRITE
) == 0)
376 flags
|= SEC_READONLY
;
377 if ((hdr
->sh_flags
& SHF_EXECINSTR
) != 0)
379 else if ((flags
& SEC_LOAD
) != 0)
382 /* The debugging sections appear to be recognized only by name, not
384 if (strncmp (name
, ".debug", sizeof ".debug" - 1) == 0
385 || strncmp (name
, ".line", sizeof ".line" - 1) == 0
386 || strncmp (name
, ".stab", sizeof ".stab" - 1) == 0)
387 flags
|= SEC_DEBUGGING
;
389 /* As a GNU extension, if the name begins with .gnu.linkonce, we
390 only link a single copy of the section. This is used to support
391 g++. g++ will emit each template expansion in its own section.
392 The symbols will be defined as weak, so that multiple definitions
393 are permitted. The GNU linker extension is to actually discard
394 all but one of the sections. */
395 if (strncmp (name
, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0)
396 flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_DISCARD
;
398 if (! bfd_set_section_flags (abfd
, newsect
, flags
))
401 if ((flags
& SEC_ALLOC
) != 0)
403 Elf_Internal_Phdr
*phdr
;
406 /* Look through the phdrs to see if we need to adjust the lma.
407 If all the p_paddr fields are zero, we ignore them, since
408 some ELF linkers produce such output. */
409 phdr
= elf_tdata (abfd
)->phdr
;
410 for (i
= 0; i
< elf_elfheader (abfd
)->e_phnum
; i
++, phdr
++)
412 if (phdr
->p_paddr
!= 0)
415 if (i
< elf_elfheader (abfd
)->e_phnum
)
417 phdr
= elf_tdata (abfd
)->phdr
;
418 for (i
= 0; i
< elf_elfheader (abfd
)->e_phnum
; i
++, phdr
++)
420 if (phdr
->p_type
== PT_LOAD
421 && phdr
->p_vaddr
!= phdr
->p_paddr
422 && phdr
->p_vaddr
<= hdr
->sh_addr
423 && (phdr
->p_vaddr
+ phdr
->p_memsz
424 >= hdr
->sh_addr
+ hdr
->sh_size
)
425 && ((flags
& SEC_LOAD
) == 0
426 || (phdr
->p_offset
<= (bfd_vma
) hdr
->sh_offset
427 && (phdr
->p_offset
+ phdr
->p_filesz
428 >= hdr
->sh_offset
+ hdr
->sh_size
))))
430 newsect
->lma
+= phdr
->p_paddr
- phdr
->p_vaddr
;
437 hdr
->bfd_section
= newsect
;
438 elf_section_data (newsect
)->this_hdr
= *hdr
;
448 struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name);
451 Helper functions for GDB to locate the string tables.
452 Since BFD hides string tables from callers, GDB needs to use an
453 internal hook to find them. Sun's .stabstr, in particular,
454 isn't even pointed to by the .stab section, so ordinary
455 mechanisms wouldn't work to find it, even if we had some.
458 struct elf_internal_shdr
*
459 bfd_elf_find_section (abfd
, name
)
463 Elf_Internal_Shdr
**i_shdrp
;
468 i_shdrp
= elf_elfsections (abfd
);
471 shstrtab
= bfd_elf_get_str_section
472 (abfd
, elf_elfheader (abfd
)->e_shstrndx
);
473 if (shstrtab
!= NULL
)
475 max
= elf_elfheader (abfd
)->e_shnum
;
476 for (i
= 1; i
< max
; i
++)
477 if (!strcmp (&shstrtab
[i_shdrp
[i
]->sh_name
], name
))
484 const char *const bfd_elf_section_type_names
[] = {
485 "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB",
486 "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE",
487 "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM",
490 /* ELF relocs are against symbols. If we are producing relocateable
491 output, and the reloc is against an external symbol, and nothing
492 has given us any additional addend, the resulting reloc will also
493 be against the same symbol. In such a case, we don't want to
494 change anything about the way the reloc is handled, since it will
495 all be done at final link time. Rather than put special case code
496 into bfd_perform_relocation, all the reloc types use this howto
497 function. It just short circuits the reloc if producing
498 relocateable output against an external symbol. */
501 bfd_reloc_status_type
502 bfd_elf_generic_reloc (abfd
,
509 bfd
*abfd ATTRIBUTE_UNUSED
;
510 arelent
*reloc_entry
;
512 PTR data ATTRIBUTE_UNUSED
;
513 asection
*input_section
;
515 char **error_message ATTRIBUTE_UNUSED
;
517 if (output_bfd
!= (bfd
*) NULL
518 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
519 && (! reloc_entry
->howto
->partial_inplace
520 || reloc_entry
->addend
== 0))
522 reloc_entry
->address
+= input_section
->output_offset
;
526 return bfd_reloc_continue
;
529 /* Print out the program headers. */
532 _bfd_elf_print_private_bfd_data (abfd
, farg
)
536 FILE *f
= (FILE *) farg
;
537 Elf_Internal_Phdr
*p
;
539 bfd_byte
*dynbuf
= NULL
;
541 p
= elf_tdata (abfd
)->phdr
;
546 fprintf (f
, _("\nProgram Header:\n"));
547 c
= elf_elfheader (abfd
)->e_phnum
;
548 for (i
= 0; i
< c
; i
++, p
++)
555 case PT_NULL
: s
= "NULL"; break;
556 case PT_LOAD
: s
= "LOAD"; break;
557 case PT_DYNAMIC
: s
= "DYNAMIC"; break;
558 case PT_INTERP
: s
= "INTERP"; break;
559 case PT_NOTE
: s
= "NOTE"; break;
560 case PT_SHLIB
: s
= "SHLIB"; break;
561 case PT_PHDR
: s
= "PHDR"; break;
562 default: sprintf (buf
, "0x%lx", p
->p_type
); s
= buf
; break;
564 fprintf (f
, "%8s off 0x", s
);
565 fprintf_vma (f
, p
->p_offset
);
566 fprintf (f
, " vaddr 0x");
567 fprintf_vma (f
, p
->p_vaddr
);
568 fprintf (f
, " paddr 0x");
569 fprintf_vma (f
, p
->p_paddr
);
570 fprintf (f
, " align 2**%u\n", bfd_log2 (p
->p_align
));
571 fprintf (f
, " filesz 0x");
572 fprintf_vma (f
, p
->p_filesz
);
573 fprintf (f
, " memsz 0x");
574 fprintf_vma (f
, p
->p_memsz
);
575 fprintf (f
, " flags %c%c%c",
576 (p
->p_flags
& PF_R
) != 0 ? 'r' : '-',
577 (p
->p_flags
& PF_W
) != 0 ? 'w' : '-',
578 (p
->p_flags
& PF_X
) != 0 ? 'x' : '-');
579 if ((p
->p_flags
&~ (PF_R
| PF_W
| PF_X
)) != 0)
580 fprintf (f
, " %lx", p
->p_flags
&~ (PF_R
| PF_W
| PF_X
));
585 s
= bfd_get_section_by_name (abfd
, ".dynamic");
590 bfd_byte
*extdyn
, *extdynend
;
592 void (*swap_dyn_in
) PARAMS ((bfd
*, const PTR
, Elf_Internal_Dyn
*));
594 fprintf (f
, _("\nDynamic Section:\n"));
596 dynbuf
= (bfd_byte
*) bfd_malloc (s
->_raw_size
);
599 if (! bfd_get_section_contents (abfd
, s
, (PTR
) dynbuf
, (file_ptr
) 0,
603 elfsec
= _bfd_elf_section_from_bfd_section (abfd
, s
);
606 link
= elf_elfsections (abfd
)[elfsec
]->sh_link
;
608 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
609 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
612 extdynend
= extdyn
+ s
->_raw_size
;
613 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
615 Elf_Internal_Dyn dyn
;
620 (*swap_dyn_in
) (abfd
, (PTR
) extdyn
, &dyn
);
622 if (dyn
.d_tag
== DT_NULL
)
629 sprintf (ab
, "0x%lx", (unsigned long) dyn
.d_tag
);
633 case DT_NEEDED
: name
= "NEEDED"; stringp
= true; break;
634 case DT_PLTRELSZ
: name
= "PLTRELSZ"; break;
635 case DT_PLTGOT
: name
= "PLTGOT"; break;
636 case DT_HASH
: name
= "HASH"; break;
637 case DT_STRTAB
: name
= "STRTAB"; break;
638 case DT_SYMTAB
: name
= "SYMTAB"; break;
639 case DT_RELA
: name
= "RELA"; break;
640 case DT_RELASZ
: name
= "RELASZ"; break;
641 case DT_RELAENT
: name
= "RELAENT"; break;
642 case DT_STRSZ
: name
= "STRSZ"; break;
643 case DT_SYMENT
: name
= "SYMENT"; break;
644 case DT_INIT
: name
= "INIT"; break;
645 case DT_FINI
: name
= "FINI"; break;
646 case DT_SONAME
: name
= "SONAME"; stringp
= true; break;
647 case DT_RPATH
: name
= "RPATH"; stringp
= true; break;
648 case DT_SYMBOLIC
: name
= "SYMBOLIC"; break;
649 case DT_REL
: name
= "REL"; break;
650 case DT_RELSZ
: name
= "RELSZ"; break;
651 case DT_RELENT
: name
= "RELENT"; break;
652 case DT_PLTREL
: name
= "PLTREL"; break;
653 case DT_DEBUG
: name
= "DEBUG"; break;
654 case DT_TEXTREL
: name
= "TEXTREL"; break;
655 case DT_JMPREL
: name
= "JMPREL"; break;
656 case DT_AUXILIARY
: name
= "AUXILIARY"; stringp
= true; break;
657 case DT_FILTER
: name
= "FILTER"; stringp
= true; break;
658 case DT_VERSYM
: name
= "VERSYM"; break;
659 case DT_VERDEF
: name
= "VERDEF"; break;
660 case DT_VERDEFNUM
: name
= "VERDEFNUM"; break;
661 case DT_VERNEED
: name
= "VERNEED"; break;
662 case DT_VERNEEDNUM
: name
= "VERNEEDNUM"; break;
665 fprintf (f
, " %-11s ", name
);
667 fprintf (f
, "0x%lx", (unsigned long) dyn
.d_un
.d_val
);
672 string
= bfd_elf_string_from_elf_section (abfd
, link
,
676 fprintf (f
, "%s", string
);
685 if ((elf_dynverdef (abfd
) != 0 && elf_tdata (abfd
)->verdef
== NULL
)
686 || (elf_dynverref (abfd
) != 0 && elf_tdata (abfd
)->verref
== NULL
))
688 if (! _bfd_elf_slurp_version_tables (abfd
))
692 if (elf_dynverdef (abfd
) != 0)
694 Elf_Internal_Verdef
*t
;
696 fprintf (f
, _("\nVersion definitions:\n"));
697 for (t
= elf_tdata (abfd
)->verdef
; t
!= NULL
; t
= t
->vd_nextdef
)
699 fprintf (f
, "%d 0x%2.2x 0x%8.8lx %s\n", t
->vd_ndx
,
700 t
->vd_flags
, t
->vd_hash
, t
->vd_nodename
);
701 if (t
->vd_auxptr
->vda_nextptr
!= NULL
)
703 Elf_Internal_Verdaux
*a
;
706 for (a
= t
->vd_auxptr
->vda_nextptr
;
709 fprintf (f
, "%s ", a
->vda_nodename
);
715 if (elf_dynverref (abfd
) != 0)
717 Elf_Internal_Verneed
*t
;
719 fprintf (f
, _("\nVersion References:\n"));
720 for (t
= elf_tdata (abfd
)->verref
; t
!= NULL
; t
= t
->vn_nextref
)
722 Elf_Internal_Vernaux
*a
;
724 fprintf (f
, _(" required from %s:\n"), t
->vn_filename
);
725 for (a
= t
->vn_auxptr
; a
!= NULL
; a
= a
->vna_nextptr
)
726 fprintf (f
, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a
->vna_hash
,
727 a
->vna_flags
, a
->vna_other
, a
->vna_nodename
);
739 /* Display ELF-specific fields of a symbol. */
742 bfd_elf_print_symbol (abfd
, filep
, symbol
, how
)
746 bfd_print_symbol_type how
;
748 FILE *file
= (FILE *) filep
;
751 case bfd_print_symbol_name
:
752 fprintf (file
, "%s", symbol
->name
);
754 case bfd_print_symbol_more
:
755 fprintf (file
, "elf ");
756 fprintf_vma (file
, symbol
->value
);
757 fprintf (file
, " %lx", (long) symbol
->flags
);
759 case bfd_print_symbol_all
:
761 CONST
char *section_name
;
762 CONST
char *name
= NULL
;
763 struct elf_backend_data
*bed
;
764 unsigned char st_other
;
766 section_name
= symbol
->section
? symbol
->section
->name
: "(*none*)";
768 bed
= get_elf_backend_data (abfd
);
769 if (bed
->elf_backend_print_symbol_all
)
770 name
= (*bed
->elf_backend_print_symbol_all
) (abfd
, filep
, symbol
);
775 bfd_print_symbol_vandf ((PTR
) file
, symbol
);
778 fprintf (file
, " %s\t", section_name
);
779 /* Print the "other" value for a symbol. For common symbols,
780 we've already printed the size; now print the alignment.
781 For other symbols, we have no specified alignment, and
782 we've printed the address; now print the size. */
784 (bfd_is_com_section (symbol
->section
)
785 ? ((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_value
786 : ((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_size
));
788 /* If we have version information, print it. */
789 if (elf_tdata (abfd
)->dynversym_section
!= 0
790 && (elf_tdata (abfd
)->dynverdef_section
!= 0
791 || elf_tdata (abfd
)->dynverref_section
!= 0))
794 const char *version_string
;
796 vernum
= ((elf_symbol_type
*) symbol
)->version
& VERSYM_VERSION
;
800 else if (vernum
== 1)
801 version_string
= "Base";
802 else if (vernum
<= elf_tdata (abfd
)->cverdefs
)
804 elf_tdata (abfd
)->verdef
[vernum
- 1].vd_nodename
;
807 Elf_Internal_Verneed
*t
;
810 for (t
= elf_tdata (abfd
)->verref
;
814 Elf_Internal_Vernaux
*a
;
816 for (a
= t
->vn_auxptr
; a
!= NULL
; a
= a
->vna_nextptr
)
818 if (a
->vna_other
== vernum
)
820 version_string
= a
->vna_nodename
;
827 if ((((elf_symbol_type
*) symbol
)->version
& VERSYM_HIDDEN
) == 0)
828 fprintf (file
, " %-11s", version_string
);
833 fprintf (file
, " (%s)", version_string
);
834 for (i
= 10 - strlen (version_string
); i
> 0; --i
)
839 /* If the st_other field is not zero, print it. */
840 st_other
= ((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_other
;
845 case STV_INTERNAL
: fprintf (file
, " .internal"); break;
846 case STV_HIDDEN
: fprintf (file
, " .hidden"); break;
847 case STV_PROTECTED
: fprintf (file
, " .protected"); break;
849 /* Some other non-defined flags are also present, so print
851 fprintf (file
, " 0x%02x", (unsigned int) st_other
);
854 fprintf (file
, " %s", name
);
860 /* Create an entry in an ELF linker hash table. */
862 struct bfd_hash_entry
*
863 _bfd_elf_link_hash_newfunc (entry
, table
, string
)
864 struct bfd_hash_entry
*entry
;
865 struct bfd_hash_table
*table
;
868 struct elf_link_hash_entry
*ret
= (struct elf_link_hash_entry
*) entry
;
870 /* Allocate the structure if it has not already been allocated by a
872 if (ret
== (struct elf_link_hash_entry
*) NULL
)
873 ret
= ((struct elf_link_hash_entry
*)
874 bfd_hash_allocate (table
, sizeof (struct elf_link_hash_entry
)));
875 if (ret
== (struct elf_link_hash_entry
*) NULL
)
876 return (struct bfd_hash_entry
*) ret
;
878 /* Call the allocation method of the superclass. */
879 ret
= ((struct elf_link_hash_entry
*)
880 _bfd_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
882 if (ret
!= (struct elf_link_hash_entry
*) NULL
)
884 /* Set local fields. */
888 ret
->dynstr_index
= 0;
890 ret
->got
.offset
= (bfd_vma
) -1;
891 ret
->plt
.offset
= (bfd_vma
) -1;
892 ret
->linker_section_pointer
= (elf_linker_section_pointers_t
*)0;
893 ret
->verinfo
.verdef
= NULL
;
894 ret
->vtable_entries_used
= NULL
;
895 ret
->vtable_entries_size
= 0;
896 ret
->vtable_parent
= NULL
;
897 ret
->type
= STT_NOTYPE
;
899 /* Assume that we have been called by a non-ELF symbol reader.
900 This flag is then reset by the code which reads an ELF input
901 file. This ensures that a symbol created by a non-ELF symbol
902 reader will have the flag set correctly. */
903 ret
->elf_link_hash_flags
= ELF_LINK_NON_ELF
;
906 return (struct bfd_hash_entry
*) ret
;
909 /* Copy data from an indirect symbol to its direct symbol, hiding the
910 old indirect symbol. */
913 _bfd_elf_link_hash_copy_indirect (table
, dir
, ind
)
914 struct elf_link_hash_table
*table
;
915 struct elf_link_hash_entry
*dir
, *ind
;
917 /* Copy down any references that we may have already seen to the
918 symbol which just became indirect. */
920 dir
->elf_link_hash_flags
|=
921 (ind
->elf_link_hash_flags
922 & (ELF_LINK_HASH_REF_DYNAMIC
923 | ELF_LINK_HASH_REF_REGULAR
924 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
925 | ELF_LINK_NON_GOT_REF
));
927 /* Copy over the global and procedure linkage table offset entries.
928 These may have been already set up by a check_relocs routine. */
929 if (dir
->got
.offset
== (bfd_vma
) -1)
931 dir
->got
.offset
= ind
->got
.offset
;
932 ind
->got
.offset
= (bfd_vma
) -1;
934 BFD_ASSERT (ind
->got
.offset
== (bfd_vma
) -1);
936 if (dir
->plt
.offset
== (bfd_vma
) -1)
938 dir
->plt
.offset
= ind
->plt
.offset
;
939 ind
->plt
.offset
= (bfd_vma
) -1;
941 BFD_ASSERT (ind
->plt
.offset
== (bfd_vma
) -1);
943 if (dir
->dynindx
== -1)
945 dir
->dynindx
= ind
->dynindx
;
946 dir
->dynstr_index
= ind
->dynstr_index
;
948 ind
->dynstr_index
= 0;
950 BFD_ASSERT (ind
->dynindx
== -1);
954 _bfd_elf_link_hash_hide_symbol(table
, h
)
955 struct elf_link_hash_table
*table
;
956 struct elf_link_hash_entry
*h
;
958 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
960 h
->plt
.offset
= (bfd_vma
) -1;
963 /* Initialize an ELF linker hash table. */
966 _bfd_elf_link_hash_table_init (table
, abfd
, newfunc
)
967 struct elf_link_hash_table
*table
;
969 struct bfd_hash_entry
*(*newfunc
) PARAMS ((struct bfd_hash_entry
*,
970 struct bfd_hash_table
*,
973 table
->dynamic_sections_created
= false;
974 table
->dynobj
= NULL
;
975 /* The first dynamic symbol is a dummy. */
976 table
->dynsymcount
= 1;
977 table
->dynstr
= NULL
;
978 table
->bucketcount
= 0;
979 table
->needed
= NULL
;
981 table
->stab_info
= NULL
;
982 table
->copy_indirect
= _bfd_elf_link_hash_copy_indirect
;
983 table
->hide_symbol
= _bfd_elf_link_hash_hide_symbol
;
984 return _bfd_link_hash_table_init (&table
->root
, abfd
, newfunc
);
987 /* Create an ELF linker hash table. */
989 struct bfd_link_hash_table
*
990 _bfd_elf_link_hash_table_create (abfd
)
993 struct elf_link_hash_table
*ret
;
995 ret
= ((struct elf_link_hash_table
*)
996 bfd_alloc (abfd
, sizeof (struct elf_link_hash_table
)));
997 if (ret
== (struct elf_link_hash_table
*) NULL
)
1000 if (! _bfd_elf_link_hash_table_init (ret
, abfd
, _bfd_elf_link_hash_newfunc
))
1002 bfd_release (abfd
, ret
);
1009 /* This is a hook for the ELF emulation code in the generic linker to
1010 tell the backend linker what file name to use for the DT_NEEDED
1011 entry for a dynamic object. The generic linker passes name as an
1012 empty string to indicate that no DT_NEEDED entry should be made. */
1015 bfd_elf_set_dt_needed_name (abfd
, name
)
1019 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1020 && bfd_get_format (abfd
) == bfd_object
)
1021 elf_dt_name (abfd
) = name
;
1024 /* Get the list of DT_NEEDED entries for a link. This is a hook for
1025 the linker ELF emulation code. */
1027 struct bfd_link_needed_list
*
1028 bfd_elf_get_needed_list (abfd
, info
)
1029 bfd
*abfd ATTRIBUTE_UNUSED
;
1030 struct bfd_link_info
*info
;
1032 if (info
->hash
->creator
->flavour
!= bfd_target_elf_flavour
)
1034 return elf_hash_table (info
)->needed
;
1037 /* Get the name actually used for a dynamic object for a link. This
1038 is the SONAME entry if there is one. Otherwise, it is the string
1039 passed to bfd_elf_set_dt_needed_name, or it is the filename. */
1042 bfd_elf_get_dt_soname (abfd
)
1045 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1046 && bfd_get_format (abfd
) == bfd_object
)
1047 return elf_dt_name (abfd
);
1051 /* Get the list of DT_NEEDED entries from a BFD. This is a hook for
1052 the ELF linker emulation code. */
1055 bfd_elf_get_bfd_needed_list (abfd
, pneeded
)
1057 struct bfd_link_needed_list
**pneeded
;
1060 bfd_byte
*dynbuf
= NULL
;
1063 bfd_byte
*extdyn
, *extdynend
;
1065 void (*swap_dyn_in
) PARAMS ((bfd
*, const PTR
, Elf_Internal_Dyn
*));
1069 if (bfd_get_flavour (abfd
) != bfd_target_elf_flavour
1070 || bfd_get_format (abfd
) != bfd_object
)
1073 s
= bfd_get_section_by_name (abfd
, ".dynamic");
1074 if (s
== NULL
|| s
->_raw_size
== 0)
1077 dynbuf
= (bfd_byte
*) bfd_malloc (s
->_raw_size
);
1081 if (! bfd_get_section_contents (abfd
, s
, (PTR
) dynbuf
, (file_ptr
) 0,
1085 elfsec
= _bfd_elf_section_from_bfd_section (abfd
, s
);
1089 link
= elf_elfsections (abfd
)[elfsec
]->sh_link
;
1091 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
1092 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
1095 extdynend
= extdyn
+ s
->_raw_size
;
1096 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
1098 Elf_Internal_Dyn dyn
;
1100 (*swap_dyn_in
) (abfd
, (PTR
) extdyn
, &dyn
);
1102 if (dyn
.d_tag
== DT_NULL
)
1105 if (dyn
.d_tag
== DT_NEEDED
)
1108 struct bfd_link_needed_list
*l
;
1110 string
= bfd_elf_string_from_elf_section (abfd
, link
,
1115 l
= (struct bfd_link_needed_list
*) bfd_alloc (abfd
, sizeof *l
);
1136 /* Allocate an ELF string table--force the first byte to be zero. */
1138 struct bfd_strtab_hash
*
1139 _bfd_elf_stringtab_init ()
1141 struct bfd_strtab_hash
*ret
;
1143 ret
= _bfd_stringtab_init ();
1148 loc
= _bfd_stringtab_add (ret
, "", true, false);
1149 BFD_ASSERT (loc
== 0 || loc
== (bfd_size_type
) -1);
1150 if (loc
== (bfd_size_type
) -1)
1152 _bfd_stringtab_free (ret
);
1159 /* ELF .o/exec file reading */
1161 /* Create a new bfd section from an ELF section header. */
1164 bfd_section_from_shdr (abfd
, shindex
)
1166 unsigned int shindex
;
1168 Elf_Internal_Shdr
*hdr
= elf_elfsections (abfd
)[shindex
];
1169 Elf_Internal_Ehdr
*ehdr
= elf_elfheader (abfd
);
1170 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1173 name
= elf_string_from_elf_strtab (abfd
, hdr
->sh_name
);
1175 switch (hdr
->sh_type
)
1178 /* Inactive section. Throw it away. */
1181 case SHT_PROGBITS
: /* Normal section with contents. */
1182 case SHT_DYNAMIC
: /* Dynamic linking information. */
1183 case SHT_NOBITS
: /* .bss section. */
1184 case SHT_HASH
: /* .hash section. */
1185 case SHT_NOTE
: /* .note section. */
1186 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1188 case SHT_SYMTAB
: /* A symbol table */
1189 if (elf_onesymtab (abfd
) == shindex
)
1192 BFD_ASSERT (hdr
->sh_entsize
== bed
->s
->sizeof_sym
);
1193 BFD_ASSERT (elf_onesymtab (abfd
) == 0);
1194 elf_onesymtab (abfd
) = shindex
;
1195 elf_tdata (abfd
)->symtab_hdr
= *hdr
;
1196 elf_elfsections (abfd
)[shindex
] = hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1197 abfd
->flags
|= HAS_SYMS
;
1199 /* Sometimes a shared object will map in the symbol table. If
1200 SHF_ALLOC is set, and this is a shared object, then we also
1201 treat this section as a BFD section. We can not base the
1202 decision purely on SHF_ALLOC, because that flag is sometimes
1203 set in a relocateable object file, which would confuse the
1205 if ((hdr
->sh_flags
& SHF_ALLOC
) != 0
1206 && (abfd
->flags
& DYNAMIC
) != 0
1207 && ! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
))
1212 case SHT_DYNSYM
: /* A dynamic symbol table */
1213 if (elf_dynsymtab (abfd
) == shindex
)
1216 BFD_ASSERT (hdr
->sh_entsize
== bed
->s
->sizeof_sym
);
1217 BFD_ASSERT (elf_dynsymtab (abfd
) == 0);
1218 elf_dynsymtab (abfd
) = shindex
;
1219 elf_tdata (abfd
)->dynsymtab_hdr
= *hdr
;
1220 elf_elfsections (abfd
)[shindex
] = hdr
= &elf_tdata (abfd
)->dynsymtab_hdr
;
1221 abfd
->flags
|= HAS_SYMS
;
1223 /* Besides being a symbol table, we also treat this as a regular
1224 section, so that objcopy can handle it. */
1225 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1227 case SHT_STRTAB
: /* A string table */
1228 if (hdr
->bfd_section
!= NULL
)
1230 if (ehdr
->e_shstrndx
== shindex
)
1232 elf_tdata (abfd
)->shstrtab_hdr
= *hdr
;
1233 elf_elfsections (abfd
)[shindex
] = &elf_tdata (abfd
)->shstrtab_hdr
;
1239 for (i
= 1; i
< ehdr
->e_shnum
; i
++)
1241 Elf_Internal_Shdr
*hdr2
= elf_elfsections (abfd
)[i
];
1242 if (hdr2
->sh_link
== shindex
)
1244 if (! bfd_section_from_shdr (abfd
, i
))
1246 if (elf_onesymtab (abfd
) == i
)
1248 elf_tdata (abfd
)->strtab_hdr
= *hdr
;
1249 elf_elfsections (abfd
)[shindex
] =
1250 &elf_tdata (abfd
)->strtab_hdr
;
1253 if (elf_dynsymtab (abfd
) == i
)
1255 elf_tdata (abfd
)->dynstrtab_hdr
= *hdr
;
1256 elf_elfsections (abfd
)[shindex
] = hdr
=
1257 &elf_tdata (abfd
)->dynstrtab_hdr
;
1258 /* We also treat this as a regular section, so
1259 that objcopy can handle it. */
1262 #if 0 /* Not handling other string tables specially right now. */
1263 hdr2
= elf_elfsections (abfd
)[i
]; /* in case it moved */
1264 /* We have a strtab for some random other section. */
1265 newsect
= (asection
*) hdr2
->bfd_section
;
1268 hdr
->bfd_section
= newsect
;
1269 hdr2
= &elf_section_data (newsect
)->str_hdr
;
1271 elf_elfsections (abfd
)[shindex
] = hdr2
;
1277 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1281 /* *These* do a lot of work -- but build no sections! */
1283 asection
*target_sect
;
1284 Elf_Internal_Shdr
*hdr2
;
1286 /* Check for a bogus link to avoid crashing. */
1287 if (hdr
->sh_link
>= ehdr
->e_shnum
)
1289 ((*_bfd_error_handler
)
1290 (_("%s: invalid link %lu for reloc section %s (index %u)"),
1291 bfd_get_filename (abfd
), hdr
->sh_link
, name
, shindex
));
1292 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1295 /* For some incomprehensible reason Oracle distributes
1296 libraries for Solaris in which some of the objects have
1297 bogus sh_link fields. It would be nice if we could just
1298 reject them, but, unfortunately, some people need to use
1299 them. We scan through the section headers; if we find only
1300 one suitable symbol table, we clobber the sh_link to point
1301 to it. I hope this doesn't break anything. */
1302 if (elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
!= SHT_SYMTAB
1303 && elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
!= SHT_DYNSYM
)
1309 for (scan
= 1; scan
< ehdr
->e_shnum
; scan
++)
1311 if (elf_elfsections (abfd
)[scan
]->sh_type
== SHT_SYMTAB
1312 || elf_elfsections (abfd
)[scan
]->sh_type
== SHT_DYNSYM
)
1323 hdr
->sh_link
= found
;
1326 /* Get the symbol table. */
1327 if (elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
== SHT_SYMTAB
1328 && ! bfd_section_from_shdr (abfd
, hdr
->sh_link
))
1331 /* If this reloc section does not use the main symbol table we
1332 don't treat it as a reloc section. BFD can't adequately
1333 represent such a section, so at least for now, we don't
1334 try. We just present it as a normal section. */
1335 if (hdr
->sh_link
!= elf_onesymtab (abfd
))
1336 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1338 if (! bfd_section_from_shdr (abfd
, hdr
->sh_info
))
1340 target_sect
= bfd_section_from_elf_index (abfd
, hdr
->sh_info
);
1341 if (target_sect
== NULL
)
1344 if ((target_sect
->flags
& SEC_RELOC
) == 0
1345 || target_sect
->reloc_count
== 0)
1346 hdr2
= &elf_section_data (target_sect
)->rel_hdr
;
1349 BFD_ASSERT (elf_section_data (target_sect
)->rel_hdr2
== NULL
);
1350 hdr2
= (Elf_Internal_Shdr
*) bfd_alloc (abfd
, sizeof (*hdr2
));
1351 elf_section_data (target_sect
)->rel_hdr2
= hdr2
;
1354 elf_elfsections (abfd
)[shindex
] = hdr2
;
1355 target_sect
->reloc_count
+= hdr
->sh_size
/ hdr
->sh_entsize
;
1356 target_sect
->flags
|= SEC_RELOC
;
1357 target_sect
->relocation
= NULL
;
1358 target_sect
->rel_filepos
= hdr
->sh_offset
;
1359 /* In the section to which the relocations apply, mark whether
1360 its relocations are of the REL or RELA variety. */
1361 elf_section_data (target_sect
)->use_rela_p
1362 = (hdr
->sh_type
== SHT_RELA
);
1363 abfd
->flags
|= HAS_RELOC
;
1368 case SHT_GNU_verdef
:
1369 elf_dynverdef (abfd
) = shindex
;
1370 elf_tdata (abfd
)->dynverdef_hdr
= *hdr
;
1371 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1374 case SHT_GNU_versym
:
1375 elf_dynversym (abfd
) = shindex
;
1376 elf_tdata (abfd
)->dynversym_hdr
= *hdr
;
1377 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1380 case SHT_GNU_verneed
:
1381 elf_dynverref (abfd
) = shindex
;
1382 elf_tdata (abfd
)->dynverref_hdr
= *hdr
;
1383 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1390 /* Check for any processor-specific section types. */
1392 if (bed
->elf_backend_section_from_shdr
)
1393 (*bed
->elf_backend_section_from_shdr
) (abfd
, hdr
, name
);
1401 /* Given an ELF section number, retrieve the corresponding BFD
1405 bfd_section_from_elf_index (abfd
, index
)
1409 BFD_ASSERT (index
> 0 && index
< SHN_LORESERVE
);
1410 if (index
>= elf_elfheader (abfd
)->e_shnum
)
1412 return elf_elfsections (abfd
)[index
]->bfd_section
;
1416 _bfd_elf_new_section_hook (abfd
, sec
)
1420 struct bfd_elf_section_data
*sdata
;
1422 sdata
= (struct bfd_elf_section_data
*) bfd_zalloc (abfd
, sizeof (*sdata
));
1425 sec
->used_by_bfd
= (PTR
) sdata
;
1427 /* Indicate whether or not this section should use RELA relocations. */
1429 = get_elf_backend_data (abfd
)->default_use_rela_p
;
1434 /* Create a new bfd section from an ELF program header.
1436 Since program segments have no names, we generate a synthetic name
1437 of the form segment<NUM>, where NUM is generally the index in the
1438 program header table. For segments that are split (see below) we
1439 generate the names segment<NUM>a and segment<NUM>b.
1441 Note that some program segments may have a file size that is different than
1442 (less than) the memory size. All this means is that at execution the
1443 system must allocate the amount of memory specified by the memory size,
1444 but only initialize it with the first "file size" bytes read from the
1445 file. This would occur for example, with program segments consisting
1446 of combined data+bss.
1448 To handle the above situation, this routine generates TWO bfd sections
1449 for the single program segment. The first has the length specified by
1450 the file size of the segment, and the second has the length specified
1451 by the difference between the two sizes. In effect, the segment is split
1452 into it's initialized and uninitialized parts.
1457 _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, typename
)
1459 Elf_Internal_Phdr
*hdr
;
1461 const char *typename
;
1468 split
= ((hdr
->p_memsz
> 0)
1469 && (hdr
->p_filesz
> 0)
1470 && (hdr
->p_memsz
> hdr
->p_filesz
));
1471 sprintf (namebuf
, "%s%d%s", typename
, index
, split
? "a" : "");
1472 name
= bfd_alloc (abfd
, strlen (namebuf
) + 1);
1475 strcpy (name
, namebuf
);
1476 newsect
= bfd_make_section (abfd
, name
);
1477 if (newsect
== NULL
)
1479 newsect
->vma
= hdr
->p_vaddr
;
1480 newsect
->lma
= hdr
->p_paddr
;
1481 newsect
->_raw_size
= hdr
->p_filesz
;
1482 newsect
->filepos
= hdr
->p_offset
;
1483 newsect
->flags
|= SEC_HAS_CONTENTS
;
1484 if (hdr
->p_type
== PT_LOAD
)
1486 newsect
->flags
|= SEC_ALLOC
;
1487 newsect
->flags
|= SEC_LOAD
;
1488 if (hdr
->p_flags
& PF_X
)
1490 /* FIXME: all we known is that it has execute PERMISSION,
1492 newsect
->flags
|= SEC_CODE
;
1495 if (!(hdr
->p_flags
& PF_W
))
1497 newsect
->flags
|= SEC_READONLY
;
1502 sprintf (namebuf
, "%s%db", typename
, index
);
1503 name
= bfd_alloc (abfd
, strlen (namebuf
) + 1);
1506 strcpy (name
, namebuf
);
1507 newsect
= bfd_make_section (abfd
, name
);
1508 if (newsect
== NULL
)
1510 newsect
->vma
= hdr
->p_vaddr
+ hdr
->p_filesz
;
1511 newsect
->lma
= hdr
->p_paddr
+ hdr
->p_filesz
;
1512 newsect
->_raw_size
= hdr
->p_memsz
- hdr
->p_filesz
;
1513 if (hdr
->p_type
== PT_LOAD
)
1515 newsect
->flags
|= SEC_ALLOC
;
1516 if (hdr
->p_flags
& PF_X
)
1517 newsect
->flags
|= SEC_CODE
;
1519 if (!(hdr
->p_flags
& PF_W
))
1520 newsect
->flags
|= SEC_READONLY
;
1527 bfd_section_from_phdr (abfd
, hdr
, index
)
1529 Elf_Internal_Phdr
*hdr
;
1532 struct elf_backend_data
*bed
;
1534 switch (hdr
->p_type
)
1537 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "null");
1540 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "load");
1543 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "dynamic");
1546 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "interp");
1549 if (! _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "note"))
1551 if (! elfcore_read_notes (abfd
, hdr
->p_offset
, hdr
->p_filesz
))
1556 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "shlib");
1559 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "phdr");
1562 /* Check for any processor-specific program segment types.
1563 If no handler for them, default to making "segment" sections. */
1564 bed
= get_elf_backend_data (abfd
);
1565 if (bed
->elf_backend_section_from_phdr
)
1566 return (*bed
->elf_backend_section_from_phdr
) (abfd
, hdr
, index
);
1568 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "segment");
1572 /* Initialize REL_HDR, the section-header for new section, containing
1573 relocations against ASECT. If USE_RELA_P is true, we use RELA
1574 relocations; otherwise, we use REL relocations. */
1577 _bfd_elf_init_reloc_shdr (abfd
, rel_hdr
, asect
, use_rela_p
)
1579 Elf_Internal_Shdr
*rel_hdr
;
1584 struct elf_backend_data
*bed
;
1586 bed
= get_elf_backend_data (abfd
);
1587 name
= bfd_alloc (abfd
, sizeof ".rela" + strlen (asect
->name
));
1590 sprintf (name
, "%s%s", use_rela_p
? ".rela" : ".rel", asect
->name
);
1592 (unsigned int) _bfd_stringtab_add (elf_shstrtab (abfd
), name
,
1594 if (rel_hdr
->sh_name
== (unsigned int) -1)
1596 rel_hdr
->sh_type
= use_rela_p
? SHT_RELA
: SHT_REL
;
1597 rel_hdr
->sh_entsize
= (use_rela_p
1598 ? bed
->s
->sizeof_rela
1599 : bed
->s
->sizeof_rel
);
1600 rel_hdr
->sh_addralign
= bed
->s
->file_align
;
1601 rel_hdr
->sh_flags
= 0;
1602 rel_hdr
->sh_addr
= 0;
1603 rel_hdr
->sh_size
= 0;
1604 rel_hdr
->sh_offset
= 0;
1609 /* Set up an ELF internal section header for a section. */
1613 elf_fake_sections (abfd
, asect
, failedptrarg
)
1618 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1619 boolean
*failedptr
= (boolean
*) failedptrarg
;
1620 Elf_Internal_Shdr
*this_hdr
;
1624 /* We already failed; just get out of the bfd_map_over_sections
1629 this_hdr
= &elf_section_data (asect
)->this_hdr
;
1631 this_hdr
->sh_name
= (unsigned long) _bfd_stringtab_add (elf_shstrtab (abfd
),
1634 if (this_hdr
->sh_name
== (unsigned long) -1)
1640 this_hdr
->sh_flags
= 0;
1642 if ((asect
->flags
& SEC_ALLOC
) != 0
1643 || asect
->user_set_vma
)
1644 this_hdr
->sh_addr
= asect
->vma
;
1646 this_hdr
->sh_addr
= 0;
1648 this_hdr
->sh_offset
= 0;
1649 this_hdr
->sh_size
= asect
->_raw_size
;
1650 this_hdr
->sh_link
= 0;
1651 this_hdr
->sh_addralign
= 1 << asect
->alignment_power
;
1652 /* The sh_entsize and sh_info fields may have been set already by
1653 copy_private_section_data. */
1655 this_hdr
->bfd_section
= asect
;
1656 this_hdr
->contents
= NULL
;
1658 /* FIXME: This should not be based on section names. */
1659 if (strcmp (asect
->name
, ".dynstr") == 0)
1660 this_hdr
->sh_type
= SHT_STRTAB
;
1661 else if (strcmp (asect
->name
, ".hash") == 0)
1663 this_hdr
->sh_type
= SHT_HASH
;
1664 this_hdr
->sh_entsize
= bed
->s
->sizeof_hash_entry
;
1666 else if (strcmp (asect
->name
, ".dynsym") == 0)
1668 this_hdr
->sh_type
= SHT_DYNSYM
;
1669 this_hdr
->sh_entsize
= bed
->s
->sizeof_sym
;
1671 else if (strcmp (asect
->name
, ".dynamic") == 0)
1673 this_hdr
->sh_type
= SHT_DYNAMIC
;
1674 this_hdr
->sh_entsize
= bed
->s
->sizeof_dyn
;
1676 else if (strncmp (asect
->name
, ".rela", 5) == 0
1677 && get_elf_backend_data (abfd
)->may_use_rela_p
)
1679 this_hdr
->sh_type
= SHT_RELA
;
1680 this_hdr
->sh_entsize
= bed
->s
->sizeof_rela
;
1682 else if (strncmp (asect
->name
, ".rel", 4) == 0
1683 && get_elf_backend_data (abfd
)->may_use_rel_p
)
1685 this_hdr
->sh_type
= SHT_REL
;
1686 this_hdr
->sh_entsize
= bed
->s
->sizeof_rel
;
1688 else if (strncmp (asect
->name
, ".note", 5) == 0)
1689 this_hdr
->sh_type
= SHT_NOTE
;
1690 else if (strncmp (asect
->name
, ".stab", 5) == 0
1691 && strcmp (asect
->name
+ strlen (asect
->name
) - 3, "str") == 0)
1692 this_hdr
->sh_type
= SHT_STRTAB
;
1693 else if (strcmp (asect
->name
, ".gnu.version") == 0)
1695 this_hdr
->sh_type
= SHT_GNU_versym
;
1696 this_hdr
->sh_entsize
= sizeof (Elf_External_Versym
);
1698 else if (strcmp (asect
->name
, ".gnu.version_d") == 0)
1700 this_hdr
->sh_type
= SHT_GNU_verdef
;
1701 this_hdr
->sh_entsize
= 0;
1702 /* objcopy or strip will copy over sh_info, but may not set
1703 cverdefs. The linker will set cverdefs, but sh_info will be
1705 if (this_hdr
->sh_info
== 0)
1706 this_hdr
->sh_info
= elf_tdata (abfd
)->cverdefs
;
1708 BFD_ASSERT (elf_tdata (abfd
)->cverdefs
== 0
1709 || this_hdr
->sh_info
== elf_tdata (abfd
)->cverdefs
);
1711 else if (strcmp (asect
->name
, ".gnu.version_r") == 0)
1713 this_hdr
->sh_type
= SHT_GNU_verneed
;
1714 this_hdr
->sh_entsize
= 0;
1715 /* objcopy or strip will copy over sh_info, but may not set
1716 cverrefs. The linker will set cverrefs, but sh_info will be
1718 if (this_hdr
->sh_info
== 0)
1719 this_hdr
->sh_info
= elf_tdata (abfd
)->cverrefs
;
1721 BFD_ASSERT (elf_tdata (abfd
)->cverrefs
== 0
1722 || this_hdr
->sh_info
== elf_tdata (abfd
)->cverrefs
);
1724 else if ((asect
->flags
& SEC_ALLOC
) != 0
1725 && (asect
->flags
& SEC_LOAD
) != 0)
1726 this_hdr
->sh_type
= SHT_PROGBITS
;
1727 else if ((asect
->flags
& SEC_ALLOC
) != 0
1728 && ((asect
->flags
& SEC_LOAD
) == 0))
1729 this_hdr
->sh_type
= SHT_NOBITS
;
1733 this_hdr
->sh_type
= SHT_PROGBITS
;
1736 if ((asect
->flags
& SEC_ALLOC
) != 0)
1737 this_hdr
->sh_flags
|= SHF_ALLOC
;
1738 if ((asect
->flags
& SEC_READONLY
) == 0)
1739 this_hdr
->sh_flags
|= SHF_WRITE
;
1740 if ((asect
->flags
& SEC_CODE
) != 0)
1741 this_hdr
->sh_flags
|= SHF_EXECINSTR
;
1743 /* Check for processor-specific section types. */
1744 if (bed
->elf_backend_fake_sections
)
1745 (*bed
->elf_backend_fake_sections
) (abfd
, this_hdr
, asect
);
1747 /* If the section has relocs, set up a section header for the
1748 SHT_REL[A] section. If two relocation sections are required for
1749 this section, it is up to the processor-specific back-end to
1750 create the other. */
1751 if ((asect
->flags
& SEC_RELOC
) != 0
1752 && !_bfd_elf_init_reloc_shdr (abfd
,
1753 &elf_section_data (asect
)->rel_hdr
,
1755 elf_section_data (asect
)->use_rela_p
))
1759 /* Assign all ELF section numbers. The dummy first section is handled here
1760 too. The link/info pointers for the standard section types are filled
1761 in here too, while we're at it. */
1764 assign_section_numbers (abfd
)
1767 struct elf_obj_tdata
*t
= elf_tdata (abfd
);
1769 unsigned int section_number
;
1770 Elf_Internal_Shdr
**i_shdrp
;
1771 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1775 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
1777 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
1779 d
->this_idx
= section_number
++;
1780 if ((sec
->flags
& SEC_RELOC
) == 0)
1783 d
->rel_idx
= section_number
++;
1786 d
->rel_idx2
= section_number
++;
1791 t
->shstrtab_section
= section_number
++;
1792 elf_elfheader (abfd
)->e_shstrndx
= t
->shstrtab_section
;
1793 t
->shstrtab_hdr
.sh_size
= _bfd_stringtab_size (elf_shstrtab (abfd
));
1795 if (bfd_get_symcount (abfd
) > 0)
1797 t
->symtab_section
= section_number
++;
1798 t
->strtab_section
= section_number
++;
1801 elf_elfheader (abfd
)->e_shnum
= section_number
;
1803 /* Set up the list of section header pointers, in agreement with the
1805 i_shdrp
= ((Elf_Internal_Shdr
**)
1806 bfd_alloc (abfd
, section_number
* sizeof (Elf_Internal_Shdr
*)));
1807 if (i_shdrp
== NULL
)
1810 i_shdrp
[0] = ((Elf_Internal_Shdr
*)
1811 bfd_alloc (abfd
, sizeof (Elf_Internal_Shdr
)));
1812 if (i_shdrp
[0] == NULL
)
1814 bfd_release (abfd
, i_shdrp
);
1817 memset (i_shdrp
[0], 0, sizeof (Elf_Internal_Shdr
));
1819 elf_elfsections (abfd
) = i_shdrp
;
1821 i_shdrp
[t
->shstrtab_section
] = &t
->shstrtab_hdr
;
1822 if (bfd_get_symcount (abfd
) > 0)
1824 i_shdrp
[t
->symtab_section
] = &t
->symtab_hdr
;
1825 i_shdrp
[t
->strtab_section
] = &t
->strtab_hdr
;
1826 t
->symtab_hdr
.sh_link
= t
->strtab_section
;
1828 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
1830 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
1834 i_shdrp
[d
->this_idx
] = &d
->this_hdr
;
1835 if (d
->rel_idx
!= 0)
1836 i_shdrp
[d
->rel_idx
] = &d
->rel_hdr
;
1837 if (d
->rel_idx2
!= 0)
1838 i_shdrp
[d
->rel_idx2
] = d
->rel_hdr2
;
1840 /* Fill in the sh_link and sh_info fields while we're at it. */
1842 /* sh_link of a reloc section is the section index of the symbol
1843 table. sh_info is the section index of the section to which
1844 the relocation entries apply. */
1845 if (d
->rel_idx
!= 0)
1847 d
->rel_hdr
.sh_link
= t
->symtab_section
;
1848 d
->rel_hdr
.sh_info
= d
->this_idx
;
1850 if (d
->rel_idx2
!= 0)
1852 d
->rel_hdr2
->sh_link
= t
->symtab_section
;
1853 d
->rel_hdr2
->sh_info
= d
->this_idx
;
1856 switch (d
->this_hdr
.sh_type
)
1860 /* A reloc section which we are treating as a normal BFD
1861 section. sh_link is the section index of the symbol
1862 table. sh_info is the section index of the section to
1863 which the relocation entries apply. We assume that an
1864 allocated reloc section uses the dynamic symbol table.
1865 FIXME: How can we be sure? */
1866 s
= bfd_get_section_by_name (abfd
, ".dynsym");
1868 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
1870 /* We look up the section the relocs apply to by name. */
1872 if (d
->this_hdr
.sh_type
== SHT_REL
)
1876 s
= bfd_get_section_by_name (abfd
, name
);
1878 d
->this_hdr
.sh_info
= elf_section_data (s
)->this_idx
;
1882 /* We assume that a section named .stab*str is a stabs
1883 string section. We look for a section with the same name
1884 but without the trailing ``str'', and set its sh_link
1885 field to point to this section. */
1886 if (strncmp (sec
->name
, ".stab", sizeof ".stab" - 1) == 0
1887 && strcmp (sec
->name
+ strlen (sec
->name
) - 3, "str") == 0)
1892 len
= strlen (sec
->name
);
1893 alc
= (char *) bfd_malloc (len
- 2);
1896 strncpy (alc
, sec
->name
, len
- 3);
1897 alc
[len
- 3] = '\0';
1898 s
= bfd_get_section_by_name (abfd
, alc
);
1902 elf_section_data (s
)->this_hdr
.sh_link
= d
->this_idx
;
1904 /* This is a .stab section. */
1905 elf_section_data (s
)->this_hdr
.sh_entsize
=
1906 4 + 2 * (bed
->s
->arch_size
/ 8);
1913 case SHT_GNU_verneed
:
1914 case SHT_GNU_verdef
:
1915 /* sh_link is the section header index of the string table
1916 used for the dynamic entries, or the symbol table, or the
1918 s
= bfd_get_section_by_name (abfd
, ".dynstr");
1920 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
1924 case SHT_GNU_versym
:
1925 /* sh_link is the section header index of the symbol table
1926 this hash table or version table is for. */
1927 s
= bfd_get_section_by_name (abfd
, ".dynsym");
1929 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
1937 /* Map symbol from it's internal number to the external number, moving
1938 all local symbols to be at the head of the list. */
1941 sym_is_global (abfd
, sym
)
1945 /* If the backend has a special mapping, use it. */
1946 if (get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
1947 return ((*get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
1950 return ((sym
->flags
& (BSF_GLOBAL
| BSF_WEAK
)) != 0
1951 || bfd_is_und_section (bfd_get_section (sym
))
1952 || bfd_is_com_section (bfd_get_section (sym
)));
1956 elf_map_symbols (abfd
)
1959 int symcount
= bfd_get_symcount (abfd
);
1960 asymbol
**syms
= bfd_get_outsymbols (abfd
);
1961 asymbol
**sect_syms
;
1963 int num_globals
= 0;
1964 int num_locals2
= 0;
1965 int num_globals2
= 0;
1967 int num_sections
= 0;
1974 fprintf (stderr
, "elf_map_symbols\n");
1978 /* Add a section symbol for each BFD section. FIXME: Is this really
1980 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
1982 if (max_index
< asect
->index
)
1983 max_index
= asect
->index
;
1987 sect_syms
= (asymbol
**) bfd_zalloc (abfd
, max_index
* sizeof (asymbol
*));
1988 if (sect_syms
== NULL
)
1990 elf_section_syms (abfd
) = sect_syms
;
1992 for (idx
= 0; idx
< symcount
; idx
++)
1996 if ((sym
->flags
& BSF_SECTION_SYM
) != 0
2003 if (sec
->owner
!= NULL
)
2005 if (sec
->owner
!= abfd
)
2007 if (sec
->output_offset
!= 0)
2010 sec
= sec
->output_section
;
2012 /* Empty sections in the input files may have had a section
2013 symbol created for them. (See the comment near the end of
2014 _bfd_generic_link_output_symbols in linker.c). If the linker
2015 script discards such sections then we will reach this point.
2016 Since we know that we cannot avoid this case, we detect it
2017 and skip the abort and the assignment to the sect_syms array.
2018 To reproduce this particular case try running the linker
2019 testsuite test ld-scripts/weak.exp for an ELF port that uses
2020 the generic linker. */
2021 if (sec
->owner
== NULL
)
2024 BFD_ASSERT (sec
->owner
== abfd
);
2026 sect_syms
[sec
->index
] = syms
[idx
];
2031 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2033 if (sect_syms
[asect
->index
] != NULL
)
2036 sym
= bfd_make_empty_symbol (abfd
);
2039 sym
->the_bfd
= abfd
;
2040 sym
->name
= asect
->name
;
2042 /* Set the flags to 0 to indicate that this one was newly added. */
2044 sym
->section
= asect
;
2045 sect_syms
[asect
->index
] = sym
;
2049 _("creating section symbol, name = %s, value = 0x%.8lx, index = %d, section = 0x%.8lx\n"),
2050 asect
->name
, (long) asect
->vma
, asect
->index
, (long) asect
);
2054 /* Classify all of the symbols. */
2055 for (idx
= 0; idx
< symcount
; idx
++)
2057 if (!sym_is_global (abfd
, syms
[idx
]))
2062 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2064 if (sect_syms
[asect
->index
] != NULL
2065 && sect_syms
[asect
->index
]->flags
== 0)
2067 sect_syms
[asect
->index
]->flags
= BSF_SECTION_SYM
;
2068 if (!sym_is_global (abfd
, sect_syms
[asect
->index
]))
2072 sect_syms
[asect
->index
]->flags
= 0;
2076 /* Now sort the symbols so the local symbols are first. */
2077 new_syms
= ((asymbol
**)
2079 (num_locals
+ num_globals
) * sizeof (asymbol
*)));
2080 if (new_syms
== NULL
)
2083 for (idx
= 0; idx
< symcount
; idx
++)
2085 asymbol
*sym
= syms
[idx
];
2088 if (!sym_is_global (abfd
, sym
))
2091 i
= num_locals
+ num_globals2
++;
2093 sym
->udata
.i
= i
+ 1;
2095 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2097 if (sect_syms
[asect
->index
] != NULL
2098 && sect_syms
[asect
->index
]->flags
== 0)
2100 asymbol
*sym
= sect_syms
[asect
->index
];
2103 sym
->flags
= BSF_SECTION_SYM
;
2104 if (!sym_is_global (abfd
, sym
))
2107 i
= num_locals
+ num_globals2
++;
2109 sym
->udata
.i
= i
+ 1;
2113 bfd_set_symtab (abfd
, new_syms
, num_locals
+ num_globals
);
2115 elf_num_locals (abfd
) = num_locals
;
2116 elf_num_globals (abfd
) = num_globals
;
2120 /* Align to the maximum file alignment that could be required for any
2121 ELF data structure. */
2123 static INLINE file_ptr align_file_position
PARAMS ((file_ptr
, int));
2124 static INLINE file_ptr
2125 align_file_position (off
, align
)
2129 return (off
+ align
- 1) & ~(align
- 1);
2132 /* Assign a file position to a section, optionally aligning to the
2133 required section alignment. */
2136 _bfd_elf_assign_file_position_for_section (i_shdrp
, offset
, align
)
2137 Elf_Internal_Shdr
*i_shdrp
;
2145 al
= i_shdrp
->sh_addralign
;
2147 offset
= BFD_ALIGN (offset
, al
);
2149 i_shdrp
->sh_offset
= offset
;
2150 if (i_shdrp
->bfd_section
!= NULL
)
2151 i_shdrp
->bfd_section
->filepos
= offset
;
2152 if (i_shdrp
->sh_type
!= SHT_NOBITS
)
2153 offset
+= i_shdrp
->sh_size
;
2157 /* Compute the file positions we are going to put the sections at, and
2158 otherwise prepare to begin writing out the ELF file. If LINK_INFO
2159 is not NULL, this is being called by the ELF backend linker. */
2162 _bfd_elf_compute_section_file_positions (abfd
, link_info
)
2164 struct bfd_link_info
*link_info
;
2166 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2168 struct bfd_strtab_hash
*strtab
;
2169 Elf_Internal_Shdr
*shstrtab_hdr
;
2171 if (abfd
->output_has_begun
)
2174 /* Do any elf backend specific processing first. */
2175 if (bed
->elf_backend_begin_write_processing
)
2176 (*bed
->elf_backend_begin_write_processing
) (abfd
, link_info
);
2178 if (! prep_headers (abfd
))
2181 /* Post process the headers if necessary. */
2182 if (bed
->elf_backend_post_process_headers
)
2183 (*bed
->elf_backend_post_process_headers
) (abfd
, link_info
);
2186 bfd_map_over_sections (abfd
, elf_fake_sections
, &failed
);
2190 if (!assign_section_numbers (abfd
))
2193 /* The backend linker builds symbol table information itself. */
2194 if (link_info
== NULL
&& bfd_get_symcount (abfd
) > 0)
2196 /* Non-zero if doing a relocatable link. */
2197 int relocatable_p
= ! (abfd
->flags
& (EXEC_P
| DYNAMIC
));
2199 if (! swap_out_syms (abfd
, &strtab
, relocatable_p
))
2203 shstrtab_hdr
= &elf_tdata (abfd
)->shstrtab_hdr
;
2204 /* sh_name was set in prep_headers. */
2205 shstrtab_hdr
->sh_type
= SHT_STRTAB
;
2206 shstrtab_hdr
->sh_flags
= 0;
2207 shstrtab_hdr
->sh_addr
= 0;
2208 shstrtab_hdr
->sh_size
= _bfd_stringtab_size (elf_shstrtab (abfd
));
2209 shstrtab_hdr
->sh_entsize
= 0;
2210 shstrtab_hdr
->sh_link
= 0;
2211 shstrtab_hdr
->sh_info
= 0;
2212 /* sh_offset is set in assign_file_positions_except_relocs. */
2213 shstrtab_hdr
->sh_addralign
= 1;
2215 if (!assign_file_positions_except_relocs (abfd
))
2218 if (link_info
== NULL
&& bfd_get_symcount (abfd
) > 0)
2221 Elf_Internal_Shdr
*hdr
;
2223 off
= elf_tdata (abfd
)->next_file_pos
;
2225 hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2226 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
2228 hdr
= &elf_tdata (abfd
)->strtab_hdr
;
2229 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
2231 elf_tdata (abfd
)->next_file_pos
= off
;
2233 /* Now that we know where the .strtab section goes, write it
2235 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
2236 || ! _bfd_stringtab_emit (abfd
, strtab
))
2238 _bfd_stringtab_free (strtab
);
2241 abfd
->output_has_begun
= true;
2246 /* Create a mapping from a set of sections to a program segment. */
2248 static INLINE
struct elf_segment_map
*
2249 make_mapping (abfd
, sections
, from
, to
, phdr
)
2251 asection
**sections
;
2256 struct elf_segment_map
*m
;
2260 m
= ((struct elf_segment_map
*)
2262 (sizeof (struct elf_segment_map
)
2263 + (to
- from
- 1) * sizeof (asection
*))));
2267 m
->p_type
= PT_LOAD
;
2268 for (i
= from
, hdrpp
= sections
+ from
; i
< to
; i
++, hdrpp
++)
2269 m
->sections
[i
- from
] = *hdrpp
;
2270 m
->count
= to
- from
;
2272 if (from
== 0 && phdr
)
2274 /* Include the headers in the first PT_LOAD segment. */
2275 m
->includes_filehdr
= 1;
2276 m
->includes_phdrs
= 1;
2282 /* Set up a mapping from BFD sections to program segments. */
2285 map_sections_to_segments (abfd
)
2288 asection
**sections
= NULL
;
2292 struct elf_segment_map
*mfirst
;
2293 struct elf_segment_map
**pm
;
2294 struct elf_segment_map
*m
;
2296 unsigned int phdr_index
;
2297 bfd_vma maxpagesize
;
2299 boolean phdr_in_segment
= true;
2303 if (elf_tdata (abfd
)->segment_map
!= NULL
)
2306 if (bfd_count_sections (abfd
) == 0)
2309 /* Select the allocated sections, and sort them. */
2311 sections
= (asection
**) bfd_malloc (bfd_count_sections (abfd
)
2312 * sizeof (asection
*));
2313 if (sections
== NULL
)
2317 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
2319 if ((s
->flags
& SEC_ALLOC
) != 0)
2325 BFD_ASSERT (i
<= bfd_count_sections (abfd
));
2328 qsort (sections
, (size_t) count
, sizeof (asection
*), elf_sort_sections
);
2330 /* Build the mapping. */
2335 /* If we have a .interp section, then create a PT_PHDR segment for
2336 the program headers and a PT_INTERP segment for the .interp
2338 s
= bfd_get_section_by_name (abfd
, ".interp");
2339 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
2341 m
= ((struct elf_segment_map
*)
2342 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
)));
2346 m
->p_type
= PT_PHDR
;
2347 /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */
2348 m
->p_flags
= PF_R
| PF_X
;
2349 m
->p_flags_valid
= 1;
2350 m
->includes_phdrs
= 1;
2355 m
= ((struct elf_segment_map
*)
2356 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
)));
2360 m
->p_type
= PT_INTERP
;
2368 /* Look through the sections. We put sections in the same program
2369 segment when the start of the second section can be placed within
2370 a few bytes of the end of the first section. */
2373 maxpagesize
= get_elf_backend_data (abfd
)->maxpagesize
;
2375 dynsec
= bfd_get_section_by_name (abfd
, ".dynamic");
2377 && (dynsec
->flags
& SEC_LOAD
) == 0)
2380 /* Deal with -Ttext or something similar such that the first section
2381 is not adjacent to the program headers. This is an
2382 approximation, since at this point we don't know exactly how many
2383 program headers we will need. */
2386 bfd_size_type phdr_size
;
2388 phdr_size
= elf_tdata (abfd
)->program_header_size
;
2390 phdr_size
= get_elf_backend_data (abfd
)->s
->sizeof_phdr
;
2391 if ((abfd
->flags
& D_PAGED
) == 0
2392 || sections
[0]->lma
< phdr_size
2393 || sections
[0]->lma
% maxpagesize
< phdr_size
% maxpagesize
)
2394 phdr_in_segment
= false;
2397 for (i
= 0, hdrpp
= sections
; i
< count
; i
++, hdrpp
++)
2400 boolean new_segment
;
2404 /* See if this section and the last one will fit in the same
2407 if (last_hdr
== NULL
)
2409 /* If we don't have a segment yet, then we don't need a new
2410 one (we build the last one after this loop). */
2411 new_segment
= false;
2413 else if (last_hdr
->lma
- last_hdr
->vma
!= hdr
->lma
- hdr
->vma
)
2415 /* If this section has a different relation between the
2416 virtual address and the load address, then we need a new
2420 else if (BFD_ALIGN (last_hdr
->lma
+ last_hdr
->_raw_size
, maxpagesize
)
2421 < BFD_ALIGN (hdr
->lma
, maxpagesize
))
2423 /* If putting this section in this segment would force us to
2424 skip a page in the segment, then we need a new segment. */
2427 else if ((last_hdr
->flags
& SEC_LOAD
) == 0
2428 && (hdr
->flags
& SEC_LOAD
) != 0)
2430 /* We don't want to put a loadable section after a
2431 nonloadable section in the same segment. */
2434 else if ((abfd
->flags
& D_PAGED
) == 0)
2436 /* If the file is not demand paged, which means that we
2437 don't require the sections to be correctly aligned in the
2438 file, then there is no other reason for a new segment. */
2439 new_segment
= false;
2442 && (hdr
->flags
& SEC_READONLY
) == 0
2443 && (BFD_ALIGN (last_hdr
->lma
+ last_hdr
->_raw_size
, maxpagesize
)
2446 /* We don't want to put a writable section in a read only
2447 segment, unless they are on the same page in memory
2448 anyhow. We already know that the last section does not
2449 bring us past the current section on the page, so the
2450 only case in which the new section is not on the same
2451 page as the previous section is when the previous section
2452 ends precisely on a page boundary. */
2457 /* Otherwise, we can use the same segment. */
2458 new_segment
= false;
2463 if ((hdr
->flags
& SEC_READONLY
) == 0)
2469 /* We need a new program segment. We must create a new program
2470 header holding all the sections from phdr_index until hdr. */
2472 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_segment
);
2479 if ((hdr
->flags
& SEC_READONLY
) == 0)
2486 phdr_in_segment
= false;
2489 /* Create a final PT_LOAD program segment. */
2490 if (last_hdr
!= NULL
)
2492 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_segment
);
2500 /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */
2503 m
= ((struct elf_segment_map
*)
2504 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
)));
2508 m
->p_type
= PT_DYNAMIC
;
2510 m
->sections
[0] = dynsec
;
2516 /* For each loadable .note section, add a PT_NOTE segment. We don't
2517 use bfd_get_section_by_name, because if we link together
2518 nonloadable .note sections and loadable .note sections, we will
2519 generate two .note sections in the output file. FIXME: Using
2520 names for section types is bogus anyhow. */
2521 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
2523 if ((s
->flags
& SEC_LOAD
) != 0
2524 && strncmp (s
->name
, ".note", 5) == 0)
2526 m
= ((struct elf_segment_map
*)
2527 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
)));
2531 m
->p_type
= PT_NOTE
;
2543 elf_tdata (abfd
)->segment_map
= mfirst
;
2547 if (sections
!= NULL
)
2552 /* Sort sections by address. */
2555 elf_sort_sections (arg1
, arg2
)
2559 const asection
*sec1
= *(const asection
**) arg1
;
2560 const asection
*sec2
= *(const asection
**) arg2
;
2562 /* Sort by LMA first, since this is the address used to
2563 place the section into a segment. */
2564 if (sec1
->lma
< sec2
->lma
)
2566 else if (sec1
->lma
> sec2
->lma
)
2569 /* Then sort by VMA. Normally the LMA and the VMA will be
2570 the same, and this will do nothing. */
2571 if (sec1
->vma
< sec2
->vma
)
2573 else if (sec1
->vma
> sec2
->vma
)
2576 /* Put !SEC_LOAD sections after SEC_LOAD ones. */
2578 #define TOEND(x) (((x)->flags & SEC_LOAD) == 0)
2583 return sec1
->target_index
- sec2
->target_index
;
2593 /* Sort by size, to put zero sized sections before others at the
2596 if (sec1
->_raw_size
< sec2
->_raw_size
)
2598 if (sec1
->_raw_size
> sec2
->_raw_size
)
2601 return sec1
->target_index
- sec2
->target_index
;
2604 /* Assign file positions to the sections based on the mapping from
2605 sections to segments. This function also sets up some fields in
2606 the file header, and writes out the program headers. */
2609 assign_file_positions_for_segments (abfd
)
2612 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2614 struct elf_segment_map
*m
;
2616 Elf_Internal_Phdr
*phdrs
;
2618 bfd_vma filehdr_vaddr
, filehdr_paddr
;
2619 bfd_vma phdrs_vaddr
, phdrs_paddr
;
2620 Elf_Internal_Phdr
*p
;
2622 if (elf_tdata (abfd
)->segment_map
== NULL
)
2624 if (! map_sections_to_segments (abfd
))
2628 if (bed
->elf_backend_modify_segment_map
)
2630 if (! (*bed
->elf_backend_modify_segment_map
) (abfd
))
2635 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
2638 elf_elfheader (abfd
)->e_phoff
= bed
->s
->sizeof_ehdr
;
2639 elf_elfheader (abfd
)->e_phentsize
= bed
->s
->sizeof_phdr
;
2640 elf_elfheader (abfd
)->e_phnum
= count
;
2645 /* If we already counted the number of program segments, make sure
2646 that we allocated enough space. This happens when SIZEOF_HEADERS
2647 is used in a linker script. */
2648 alloc
= elf_tdata (abfd
)->program_header_size
/ bed
->s
->sizeof_phdr
;
2649 if (alloc
!= 0 && count
> alloc
)
2651 ((*_bfd_error_handler
)
2652 (_("%s: Not enough room for program headers (allocated %u, need %u)"),
2653 bfd_get_filename (abfd
), alloc
, count
));
2654 bfd_set_error (bfd_error_bad_value
);
2661 phdrs
= ((Elf_Internal_Phdr
*)
2662 bfd_alloc (abfd
, alloc
* sizeof (Elf_Internal_Phdr
)));
2666 off
= bed
->s
->sizeof_ehdr
;
2667 off
+= alloc
* bed
->s
->sizeof_phdr
;
2674 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
2681 /* If elf_segment_map is not from map_sections_to_segments, the
2682 sections may not be correctly ordered. */
2684 qsort (m
->sections
, (size_t) m
->count
, sizeof (asection
*),
2687 p
->p_type
= m
->p_type
;
2688 p
->p_flags
= m
->p_flags
;
2690 if (p
->p_type
== PT_LOAD
2692 && (m
->sections
[0]->flags
& SEC_ALLOC
) != 0)
2694 if ((abfd
->flags
& D_PAGED
) != 0)
2695 off
+= (m
->sections
[0]->vma
- off
) % bed
->maxpagesize
;
2698 bfd_size_type align
;
2701 for (i
= 0, secpp
= m
->sections
; i
< m
->count
; i
++, secpp
++)
2703 bfd_size_type secalign
;
2705 secalign
= bfd_get_section_alignment (abfd
, *secpp
);
2706 if (secalign
> align
)
2710 off
+= (m
->sections
[0]->vma
- off
) % (1 << align
);
2717 p
->p_vaddr
= m
->sections
[0]->vma
;
2719 if (m
->p_paddr_valid
)
2720 p
->p_paddr
= m
->p_paddr
;
2721 else if (m
->count
== 0)
2724 p
->p_paddr
= m
->sections
[0]->lma
;
2726 if (p
->p_type
== PT_LOAD
2727 && (abfd
->flags
& D_PAGED
) != 0)
2728 p
->p_align
= bed
->maxpagesize
;
2729 else if (m
->count
== 0)
2730 p
->p_align
= bed
->s
->file_align
;
2738 if (m
->includes_filehdr
)
2740 if (! m
->p_flags_valid
)
2743 p
->p_filesz
= bed
->s
->sizeof_ehdr
;
2744 p
->p_memsz
= bed
->s
->sizeof_ehdr
;
2747 BFD_ASSERT (p
->p_type
== PT_LOAD
);
2749 if (p
->p_vaddr
< (bfd_vma
) off
)
2751 _bfd_error_handler (_("%s: Not enough room for program headers, try linking with -N"),
2752 bfd_get_filename (abfd
));
2753 bfd_set_error (bfd_error_bad_value
);
2758 if (! m
->p_paddr_valid
)
2761 if (p
->p_type
== PT_LOAD
)
2763 filehdr_vaddr
= p
->p_vaddr
;
2764 filehdr_paddr
= p
->p_paddr
;
2768 if (m
->includes_phdrs
)
2770 if (! m
->p_flags_valid
)
2773 if (m
->includes_filehdr
)
2775 if (p
->p_type
== PT_LOAD
)
2777 phdrs_vaddr
= p
->p_vaddr
+ bed
->s
->sizeof_ehdr
;
2778 phdrs_paddr
= p
->p_paddr
+ bed
->s
->sizeof_ehdr
;
2783 p
->p_offset
= bed
->s
->sizeof_ehdr
;
2787 BFD_ASSERT (p
->p_type
== PT_LOAD
);
2788 p
->p_vaddr
-= off
- p
->p_offset
;
2789 if (! m
->p_paddr_valid
)
2790 p
->p_paddr
-= off
- p
->p_offset
;
2793 if (p
->p_type
== PT_LOAD
)
2795 phdrs_vaddr
= p
->p_vaddr
;
2796 phdrs_paddr
= p
->p_paddr
;
2799 phdrs_vaddr
= bed
->maxpagesize
+ bed
->s
->sizeof_ehdr
;
2802 p
->p_filesz
+= alloc
* bed
->s
->sizeof_phdr
;
2803 p
->p_memsz
+= alloc
* bed
->s
->sizeof_phdr
;
2806 if (p
->p_type
== PT_LOAD
2807 || (p
->p_type
== PT_NOTE
&& bfd_get_format (abfd
) == bfd_core
))
2809 if (! m
->includes_filehdr
&& ! m
->includes_phdrs
)
2815 adjust
= off
- (p
->p_offset
+ p
->p_filesz
);
2816 p
->p_filesz
+= adjust
;
2817 p
->p_memsz
+= adjust
;
2823 for (i
= 0, secpp
= m
->sections
; i
< m
->count
; i
++, secpp
++)
2827 bfd_size_type align
;
2831 align
= 1 << bfd_get_section_alignment (abfd
, sec
);
2833 /* The section may have artificial alignment forced by a
2834 link script. Notice this case by the gap between the
2835 cumulative phdr vma and the section's vma. */
2836 if (p
->p_vaddr
+ p
->p_memsz
< sec
->vma
)
2838 bfd_vma adjust
= sec
->vma
- (p
->p_vaddr
+ p
->p_memsz
);
2840 p
->p_memsz
+= adjust
;
2843 if ((flags
& SEC_LOAD
) != 0)
2844 p
->p_filesz
+= adjust
;
2847 if (p
->p_type
== PT_LOAD
)
2849 bfd_signed_vma adjust
;
2851 if ((flags
& SEC_LOAD
) != 0)
2853 adjust
= sec
->lma
- (p
->p_paddr
+ p
->p_memsz
);
2857 else if ((flags
& SEC_ALLOC
) != 0)
2859 /* The section VMA must equal the file position
2860 modulo the page size. FIXME: I'm not sure if
2861 this adjustment is really necessary. We used to
2862 not have the SEC_LOAD case just above, and then
2863 this was necessary, but now I'm not sure. */
2864 if ((abfd
->flags
& D_PAGED
) != 0)
2865 adjust
= (sec
->vma
- voff
) % bed
->maxpagesize
;
2867 adjust
= (sec
->vma
- voff
) % align
;
2876 (* _bfd_error_handler
)
2877 (_("Error: First section in segment (%s) starts at 0x%x"),
2878 bfd_section_name (abfd
, sec
), sec
->lma
);
2879 (* _bfd_error_handler
)
2880 (_(" whereas segment starts at 0x%x"),
2885 p
->p_memsz
+= adjust
;
2888 if ((flags
& SEC_LOAD
) != 0)
2889 p
->p_filesz
+= adjust
;
2894 /* We check SEC_HAS_CONTENTS here because if NOLOAD is
2895 used in a linker script we may have a section with
2896 SEC_LOAD clear but which is supposed to have
2898 if ((flags
& SEC_LOAD
) != 0
2899 || (flags
& SEC_HAS_CONTENTS
) != 0)
2900 off
+= sec
->_raw_size
;
2902 if ((flags
& SEC_ALLOC
) != 0)
2903 voff
+= sec
->_raw_size
;
2906 if (p
->p_type
== PT_NOTE
&& bfd_get_format (abfd
) == bfd_core
)
2908 if (i
== 0) /* the actual "note" segment */
2909 { /* this one actually contains everything. */
2911 p
->p_filesz
= sec
->_raw_size
;
2912 off
+= sec
->_raw_size
;
2915 else /* fake sections -- don't need to be written */
2919 flags
= sec
->flags
= 0; /* no contents */
2926 p
->p_memsz
+= sec
->_raw_size
;
2928 if ((flags
& SEC_LOAD
) != 0)
2929 p
->p_filesz
+= sec
->_raw_size
;
2931 if (align
> p
->p_align
2932 && (p
->p_type
!= PT_LOAD
|| (abfd
->flags
& D_PAGED
) == 0))
2936 if (! m
->p_flags_valid
)
2939 if ((flags
& SEC_CODE
) != 0)
2941 if ((flags
& SEC_READONLY
) == 0)
2947 /* Now that we have set the section file positions, we can set up
2948 the file positions for the non PT_LOAD segments. */
2949 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
2953 if (p
->p_type
!= PT_LOAD
&& m
->count
> 0)
2955 BFD_ASSERT (! m
->includes_filehdr
&& ! m
->includes_phdrs
);
2956 p
->p_offset
= m
->sections
[0]->filepos
;
2960 if (m
->includes_filehdr
)
2962 p
->p_vaddr
= filehdr_vaddr
;
2963 if (! m
->p_paddr_valid
)
2964 p
->p_paddr
= filehdr_paddr
;
2966 else if (m
->includes_phdrs
)
2968 p
->p_vaddr
= phdrs_vaddr
;
2969 if (! m
->p_paddr_valid
)
2970 p
->p_paddr
= phdrs_paddr
;
2975 /* Clear out any program headers we allocated but did not use. */
2976 for (; count
< alloc
; count
++, p
++)
2978 memset (p
, 0, sizeof *p
);
2979 p
->p_type
= PT_NULL
;
2982 elf_tdata (abfd
)->phdr
= phdrs
;
2984 elf_tdata (abfd
)->next_file_pos
= off
;
2986 /* Write out the program headers. */
2987 if (bfd_seek (abfd
, bed
->s
->sizeof_ehdr
, SEEK_SET
) != 0
2988 || bed
->s
->write_out_phdrs (abfd
, phdrs
, alloc
) != 0)
2994 /* Get the size of the program header.
2996 If this is called by the linker before any of the section VMA's are set, it
2997 can't calculate the correct value for a strange memory layout. This only
2998 happens when SIZEOF_HEADERS is used in a linker script. In this case,
2999 SORTED_HDRS is NULL and we assume the normal scenario of one text and one
3000 data segment (exclusive of .interp and .dynamic).
3002 ??? User written scripts must either not use SIZEOF_HEADERS, or assume there
3003 will be two segments. */
3005 static bfd_size_type
3006 get_program_header_size (abfd
)
3011 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3013 /* We can't return a different result each time we're called. */
3014 if (elf_tdata (abfd
)->program_header_size
!= 0)
3015 return elf_tdata (abfd
)->program_header_size
;
3017 if (elf_tdata (abfd
)->segment_map
!= NULL
)
3019 struct elf_segment_map
*m
;
3022 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
3024 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
3025 return elf_tdata (abfd
)->program_header_size
;
3028 /* Assume we will need exactly two PT_LOAD segments: one for text
3029 and one for data. */
3032 s
= bfd_get_section_by_name (abfd
, ".interp");
3033 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
3035 /* If we have a loadable interpreter section, we need a
3036 PT_INTERP segment. In this case, assume we also need a
3037 PT_PHDR segment, although that may not be true for all
3042 if (bfd_get_section_by_name (abfd
, ".dynamic") != NULL
)
3044 /* We need a PT_DYNAMIC segment. */
3048 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
3050 if ((s
->flags
& SEC_LOAD
) != 0
3051 && strncmp (s
->name
, ".note", 5) == 0)
3053 /* We need a PT_NOTE segment. */
3058 /* Let the backend count up any program headers it might need. */
3059 if (bed
->elf_backend_additional_program_headers
)
3063 a
= (*bed
->elf_backend_additional_program_headers
) (abfd
);
3069 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
3070 return elf_tdata (abfd
)->program_header_size
;
3073 /* Work out the file positions of all the sections. This is called by
3074 _bfd_elf_compute_section_file_positions. All the section sizes and
3075 VMAs must be known before this is called.
3077 We do not consider reloc sections at this point, unless they form
3078 part of the loadable image. Reloc sections are assigned file
3079 positions in assign_file_positions_for_relocs, which is called by
3080 write_object_contents and final_link.
3082 We also don't set the positions of the .symtab and .strtab here. */
3085 assign_file_positions_except_relocs (abfd
)
3088 struct elf_obj_tdata
* const tdata
= elf_tdata (abfd
);
3089 Elf_Internal_Ehdr
* const i_ehdrp
= elf_elfheader (abfd
);
3090 Elf_Internal_Shdr
** const i_shdrpp
= elf_elfsections (abfd
);
3092 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3094 if ((abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0
3095 && bfd_get_format (abfd
) != bfd_core
)
3097 Elf_Internal_Shdr
**hdrpp
;
3100 /* Start after the ELF header. */
3101 off
= i_ehdrp
->e_ehsize
;
3103 /* We are not creating an executable, which means that we are
3104 not creating a program header, and that the actual order of
3105 the sections in the file is unimportant. */
3106 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< i_ehdrp
->e_shnum
; i
++, hdrpp
++)
3108 Elf_Internal_Shdr
*hdr
;
3111 if (hdr
->sh_type
== SHT_REL
|| hdr
->sh_type
== SHT_RELA
)
3113 hdr
->sh_offset
= -1;
3116 if (i
== tdata
->symtab_section
3117 || i
== tdata
->strtab_section
)
3119 hdr
->sh_offset
= -1;
3123 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
3129 Elf_Internal_Shdr
**hdrpp
;
3131 /* Assign file positions for the loaded sections based on the
3132 assignment of sections to segments. */
3133 if (! assign_file_positions_for_segments (abfd
))
3136 /* Assign file positions for the other sections. */
3138 off
= elf_tdata (abfd
)->next_file_pos
;
3139 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< i_ehdrp
->e_shnum
; i
++, hdrpp
++)
3141 Elf_Internal_Shdr
*hdr
;
3144 if (hdr
->bfd_section
!= NULL
3145 && hdr
->bfd_section
->filepos
!= 0)
3146 hdr
->sh_offset
= hdr
->bfd_section
->filepos
;
3147 else if ((hdr
->sh_flags
& SHF_ALLOC
) != 0)
3149 ((*_bfd_error_handler
)
3150 (_("%s: warning: allocated section `%s' not in segment"),
3151 bfd_get_filename (abfd
),
3152 (hdr
->bfd_section
== NULL
3154 : hdr
->bfd_section
->name
)));
3155 if ((abfd
->flags
& D_PAGED
) != 0)
3156 off
+= (hdr
->sh_addr
- off
) % bed
->maxpagesize
;
3158 off
+= (hdr
->sh_addr
- off
) % hdr
->sh_addralign
;
3159 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
,
3162 else if (hdr
->sh_type
== SHT_REL
3163 || hdr
->sh_type
== SHT_RELA
3164 || hdr
== i_shdrpp
[tdata
->symtab_section
]
3165 || hdr
== i_shdrpp
[tdata
->strtab_section
])
3166 hdr
->sh_offset
= -1;
3168 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
3172 /* Place the section headers. */
3173 off
= align_file_position (off
, bed
->s
->file_align
);
3174 i_ehdrp
->e_shoff
= off
;
3175 off
+= i_ehdrp
->e_shnum
* i_ehdrp
->e_shentsize
;
3177 elf_tdata (abfd
)->next_file_pos
= off
;
3186 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
3187 Elf_Internal_Phdr
*i_phdrp
= 0; /* Program header table, internal form */
3188 Elf_Internal_Shdr
**i_shdrp
; /* Section header table, internal form */
3190 struct bfd_strtab_hash
*shstrtab
;
3191 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3193 i_ehdrp
= elf_elfheader (abfd
);
3194 i_shdrp
= elf_elfsections (abfd
);
3196 shstrtab
= _bfd_elf_stringtab_init ();
3197 if (shstrtab
== NULL
)
3200 elf_shstrtab (abfd
) = shstrtab
;
3202 i_ehdrp
->e_ident
[EI_MAG0
] = ELFMAG0
;
3203 i_ehdrp
->e_ident
[EI_MAG1
] = ELFMAG1
;
3204 i_ehdrp
->e_ident
[EI_MAG2
] = ELFMAG2
;
3205 i_ehdrp
->e_ident
[EI_MAG3
] = ELFMAG3
;
3207 i_ehdrp
->e_ident
[EI_CLASS
] = bed
->s
->elfclass
;
3208 i_ehdrp
->e_ident
[EI_DATA
] =
3209 bfd_big_endian (abfd
) ? ELFDATA2MSB
: ELFDATA2LSB
;
3210 i_ehdrp
->e_ident
[EI_VERSION
] = bed
->s
->ev_current
;
3212 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_SYSV
;
3213 i_ehdrp
->e_ident
[EI_ABIVERSION
] = 0;
3215 for (count
= EI_PAD
; count
< EI_NIDENT
; count
++)
3216 i_ehdrp
->e_ident
[count
] = 0;
3218 if ((abfd
->flags
& DYNAMIC
) != 0)
3219 i_ehdrp
->e_type
= ET_DYN
;
3220 else if ((abfd
->flags
& EXEC_P
) != 0)
3221 i_ehdrp
->e_type
= ET_EXEC
;
3222 else if (bfd_get_format (abfd
) == bfd_core
)
3223 i_ehdrp
->e_type
= ET_CORE
;
3225 i_ehdrp
->e_type
= ET_REL
;
3227 switch (bfd_get_arch (abfd
))
3229 case bfd_arch_unknown
:
3230 i_ehdrp
->e_machine
= EM_NONE
;
3232 case bfd_arch_sparc
:
3233 if (bed
->s
->arch_size
== 64)
3234 i_ehdrp
->e_machine
= EM_SPARCV9
;
3236 i_ehdrp
->e_machine
= EM_SPARC
;
3239 i_ehdrp
->e_machine
= EM_386
;
3242 i_ehdrp
->e_machine
= EM_68K
;
3245 i_ehdrp
->e_machine
= EM_88K
;
3248 i_ehdrp
->e_machine
= EM_860
;
3251 i_ehdrp
->e_machine
= EM_960
;
3253 case bfd_arch_mips
: /* MIPS Rxxxx */
3254 i_ehdrp
->e_machine
= EM_MIPS
; /* only MIPS R3000 */
3257 i_ehdrp
->e_machine
= EM_PARISC
;
3259 case bfd_arch_powerpc
:
3260 i_ehdrp
->e_machine
= EM_PPC
;
3262 case bfd_arch_alpha
:
3263 i_ehdrp
->e_machine
= EM_ALPHA
;
3266 i_ehdrp
->e_machine
= EM_SH
;
3269 i_ehdrp
->e_machine
= EM_CYGNUS_D10V
;
3272 i_ehdrp
->e_machine
= EM_CYGNUS_D30V
;
3275 i_ehdrp
->e_machine
= EM_CYGNUS_FR30
;
3277 case bfd_arch_mcore
:
3278 i_ehdrp
->e_machine
= EM_MCORE
;
3281 switch (bfd_get_mach (abfd
))
3284 case 0: i_ehdrp
->e_machine
= EM_CYGNUS_V850
; break;
3288 i_ehdrp
->e_machine
= EM_CYGNUS_ARC
;
3291 i_ehdrp
->e_machine
= EM_ARM
;
3294 i_ehdrp
->e_machine
= EM_CYGNUS_M32R
;
3296 case bfd_arch_mn10200
:
3297 i_ehdrp
->e_machine
= EM_CYGNUS_MN10200
;
3299 case bfd_arch_mn10300
:
3300 i_ehdrp
->e_machine
= EM_CYGNUS_MN10300
;
3303 i_ehdrp
->e_machine
= EM_PJ
;
3305 /* also note that EM_M32, AT&T WE32100 is unknown to bfd */
3307 i_ehdrp
->e_machine
= EM_NONE
;
3309 i_ehdrp
->e_version
= bed
->s
->ev_current
;
3310 i_ehdrp
->e_ehsize
= bed
->s
->sizeof_ehdr
;
3312 /* no program header, for now. */
3313 i_ehdrp
->e_phoff
= 0;
3314 i_ehdrp
->e_phentsize
= 0;
3315 i_ehdrp
->e_phnum
= 0;
3317 /* each bfd section is section header entry */
3318 i_ehdrp
->e_entry
= bfd_get_start_address (abfd
);
3319 i_ehdrp
->e_shentsize
= bed
->s
->sizeof_shdr
;
3321 /* if we're building an executable, we'll need a program header table */
3322 if (abfd
->flags
& EXEC_P
)
3324 /* it all happens later */
3326 i_ehdrp
->e_phentsize
= sizeof (Elf_External_Phdr
);
3328 /* elf_build_phdrs() returns a (NULL-terminated) array of
3329 Elf_Internal_Phdrs */
3330 i_phdrp
= elf_build_phdrs (abfd
, i_ehdrp
, i_shdrp
, &i_ehdrp
->e_phnum
);
3331 i_ehdrp
->e_phoff
= outbase
;
3332 outbase
+= i_ehdrp
->e_phentsize
* i_ehdrp
->e_phnum
;
3337 i_ehdrp
->e_phentsize
= 0;
3339 i_ehdrp
->e_phoff
= 0;
3342 elf_tdata (abfd
)->symtab_hdr
.sh_name
=
3343 (unsigned int) _bfd_stringtab_add (shstrtab
, ".symtab", true, false);
3344 elf_tdata (abfd
)->strtab_hdr
.sh_name
=
3345 (unsigned int) _bfd_stringtab_add (shstrtab
, ".strtab", true, false);
3346 elf_tdata (abfd
)->shstrtab_hdr
.sh_name
=
3347 (unsigned int) _bfd_stringtab_add (shstrtab
, ".shstrtab", true, false);
3348 if (elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
3349 || elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
3350 || elf_tdata (abfd
)->shstrtab_hdr
.sh_name
== (unsigned int) -1)
3356 /* Assign file positions for all the reloc sections which are not part
3357 of the loadable file image. */
3360 _bfd_elf_assign_file_positions_for_relocs (abfd
)
3365 Elf_Internal_Shdr
**shdrpp
;
3367 off
= elf_tdata (abfd
)->next_file_pos
;
3369 for (i
= 1, shdrpp
= elf_elfsections (abfd
) + 1;
3370 i
< elf_elfheader (abfd
)->e_shnum
;
3373 Elf_Internal_Shdr
*shdrp
;
3376 if ((shdrp
->sh_type
== SHT_REL
|| shdrp
->sh_type
== SHT_RELA
)
3377 && shdrp
->sh_offset
== -1)
3378 off
= _bfd_elf_assign_file_position_for_section (shdrp
, off
, true);
3381 elf_tdata (abfd
)->next_file_pos
= off
;
3385 _bfd_elf_write_object_contents (abfd
)
3388 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3389 Elf_Internal_Ehdr
*i_ehdrp
;
3390 Elf_Internal_Shdr
**i_shdrp
;
3394 if (! abfd
->output_has_begun
3395 && ! _bfd_elf_compute_section_file_positions
3396 (abfd
, (struct bfd_link_info
*) NULL
))
3399 i_shdrp
= elf_elfsections (abfd
);
3400 i_ehdrp
= elf_elfheader (abfd
);
3403 bfd_map_over_sections (abfd
, bed
->s
->write_relocs
, &failed
);
3407 _bfd_elf_assign_file_positions_for_relocs (abfd
);
3409 /* After writing the headers, we need to write the sections too... */
3410 for (count
= 1; count
< i_ehdrp
->e_shnum
; count
++)
3412 if (bed
->elf_backend_section_processing
)
3413 (*bed
->elf_backend_section_processing
) (abfd
, i_shdrp
[count
]);
3414 if (i_shdrp
[count
]->contents
)
3416 if (bfd_seek (abfd
, i_shdrp
[count
]->sh_offset
, SEEK_SET
) != 0
3417 || (bfd_write (i_shdrp
[count
]->contents
, i_shdrp
[count
]->sh_size
,
3419 != i_shdrp
[count
]->sh_size
))
3424 /* Write out the section header names. */
3425 if (bfd_seek (abfd
, elf_tdata (abfd
)->shstrtab_hdr
.sh_offset
, SEEK_SET
) != 0
3426 || ! _bfd_stringtab_emit (abfd
, elf_shstrtab (abfd
)))
3429 if (bed
->elf_backend_final_write_processing
)
3430 (*bed
->elf_backend_final_write_processing
) (abfd
,
3431 elf_tdata (abfd
)->linker
);
3433 return bed
->s
->write_shdrs_and_ehdr (abfd
);
3437 _bfd_elf_write_corefile_contents (abfd
)
3440 /* Hopefully this can be done just like an object file. */
3441 return _bfd_elf_write_object_contents (abfd
);
3443 /* given a section, search the header to find them... */
3445 _bfd_elf_section_from_bfd_section (abfd
, asect
)
3449 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3450 Elf_Internal_Shdr
**i_shdrp
= elf_elfsections (abfd
);
3452 Elf_Internal_Shdr
*hdr
;
3453 int maxindex
= elf_elfheader (abfd
)->e_shnum
;
3455 for (index
= 0; index
< maxindex
; index
++)
3457 hdr
= i_shdrp
[index
];
3458 if (hdr
->bfd_section
== asect
)
3462 if (bed
->elf_backend_section_from_bfd_section
)
3464 for (index
= 0; index
< maxindex
; index
++)
3468 hdr
= i_shdrp
[index
];
3470 if ((*bed
->elf_backend_section_from_bfd_section
)
3471 (abfd
, hdr
, asect
, &retval
))
3476 if (bfd_is_abs_section (asect
))
3478 if (bfd_is_com_section (asect
))
3480 if (bfd_is_und_section (asect
))
3483 bfd_set_error (bfd_error_nonrepresentable_section
);
3488 /* Given a BFD symbol, return the index in the ELF symbol table, or -1
3492 _bfd_elf_symbol_from_bfd_symbol (abfd
, asym_ptr_ptr
)
3494 asymbol
**asym_ptr_ptr
;
3496 asymbol
*asym_ptr
= *asym_ptr_ptr
;
3498 flagword flags
= asym_ptr
->flags
;
3500 /* When gas creates relocations against local labels, it creates its
3501 own symbol for the section, but does put the symbol into the
3502 symbol chain, so udata is 0. When the linker is generating
3503 relocatable output, this section symbol may be for one of the
3504 input sections rather than the output section. */
3505 if (asym_ptr
->udata
.i
== 0
3506 && (flags
& BSF_SECTION_SYM
)
3507 && asym_ptr
->section
)
3511 if (asym_ptr
->section
->output_section
!= NULL
)
3512 indx
= asym_ptr
->section
->output_section
->index
;
3514 indx
= asym_ptr
->section
->index
;
3515 if (elf_section_syms (abfd
)[indx
])
3516 asym_ptr
->udata
.i
= elf_section_syms (abfd
)[indx
]->udata
.i
;
3519 idx
= asym_ptr
->udata
.i
;
3523 /* This case can occur when using --strip-symbol on a symbol
3524 which is used in a relocation entry. */
3525 (*_bfd_error_handler
)
3526 (_("%s: symbol `%s' required but not present"),
3527 bfd_get_filename (abfd
), bfd_asymbol_name (asym_ptr
));
3528 bfd_set_error (bfd_error_no_symbols
);
3535 _("elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n"),
3536 (long) asym_ptr
, asym_ptr
->name
, idx
, flags
,
3537 elf_symbol_flags (flags
));
3545 /* Copy private BFD data. This copies any program header information. */
3548 copy_private_bfd_data (ibfd
, obfd
)
3552 Elf_Internal_Ehdr
*iehdr
;
3553 struct elf_segment_map
*mfirst
;
3554 struct elf_segment_map
**pm
;
3555 struct elf_segment_map
*m
;
3556 Elf_Internal_Phdr
*p
;
3558 unsigned int num_segments
;
3559 boolean phdr_included
= false;
3561 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
3562 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
3565 if (elf_tdata (ibfd
)->phdr
== NULL
)
3568 iehdr
= elf_elfheader (ibfd
);
3573 num_segments
= elf_elfheader (ibfd
)->e_phnum
;
3575 #define IS_CONTAINED_BY(addr, len, bottom, phdr) \
3576 ((addr) >= (bottom) \
3577 && ( ((addr) + (len)) <= ((bottom) + (phdr)->p_memsz) \
3578 || ((addr) + (len)) <= ((bottom) + (phdr)->p_filesz)))
3580 /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */
3582 #define IS_COREFILE_NOTE(p, s) \
3583 (p->p_type == PT_NOTE \
3584 && bfd_get_format (ibfd) == bfd_core \
3585 && s->vma == 0 && s->lma == 0 \
3586 && (bfd_vma) s->filepos >= p->p_offset \
3587 && (bfd_vma) s->filepos + s->_raw_size \
3588 <= p->p_offset + p->p_filesz)
3590 /* The complicated case when p_vaddr is 0 is to handle the Solaris
3591 linker, which generates a PT_INTERP section with p_vaddr and
3592 p_memsz set to 0. */
3594 #define IS_SOLARIS_PT_INTERP(p, s) \
3596 && p->p_filesz > 0 \
3597 && (s->flags & SEC_HAS_CONTENTS) != 0 \
3598 && s->_raw_size > 0 \
3599 && (bfd_vma) s->filepos >= p->p_offset \
3600 && ((bfd_vma) s->filepos + s->_raw_size \
3601 <= p->p_offset + p->p_filesz))
3603 /* Scan through the segments specified in the program header
3604 of the input BFD. */
3605 for (i
= 0, p
= elf_tdata (ibfd
)->phdr
; i
< num_segments
; i
++, p
++)
3609 asection
**sections
;
3612 bfd_vma matching_lma
;
3613 bfd_vma suggested_lma
;
3616 /* For each section in the input BFD, decide if it should be
3617 included in the current segment. A section will be included
3618 if it is within the address space of the segment, and it is
3619 an allocated segment, and there is an output section
3620 associated with it. */
3622 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
3623 if (s
->output_section
!= NULL
)
3625 if ((IS_CONTAINED_BY (s
->vma
, s
->_raw_size
, p
->p_vaddr
, p
)
3626 || IS_SOLARIS_PT_INTERP (p
, s
))
3627 && (s
->flags
& SEC_ALLOC
) != 0)
3629 else if (IS_COREFILE_NOTE (p
, s
))
3633 /* Allocate a segment map big enough to contain all of the
3634 sections we have selected. */
3635 m
= ((struct elf_segment_map
*)
3637 (sizeof (struct elf_segment_map
)
3638 + ((size_t) csecs
- 1) * sizeof (asection
*))));
3642 /* Initialise the fields of the segment map. Default to
3643 using the physical address of the segment in the input BFD. */
3645 m
->p_type
= p
->p_type
;
3646 m
->p_flags
= p
->p_flags
;
3647 m
->p_flags_valid
= 1;
3648 m
->p_paddr
= p
->p_paddr
;
3649 m
->p_paddr_valid
= 1;
3651 /* Determine if this segment contains the ELF file header
3652 and if it contains the program headers themselves. */
3653 m
->includes_filehdr
= (p
->p_offset
== 0
3654 && p
->p_filesz
>= iehdr
->e_ehsize
);
3656 m
->includes_phdrs
= 0;
3658 if (! phdr_included
|| p
->p_type
!= PT_LOAD
)
3661 (p
->p_offset
<= (bfd_vma
) iehdr
->e_phoff
3662 && (p
->p_offset
+ p
->p_filesz
3663 >= ((bfd_vma
) iehdr
->e_phoff
3664 + iehdr
->e_phnum
* iehdr
->e_phentsize
)));
3665 if (p
->p_type
== PT_LOAD
&& m
->includes_phdrs
)
3666 phdr_included
= true;
3671 /* Special segments, such as the PT_PHDR segment, may contain
3672 no sections, but ordinary, loadable segments should contain
3675 if (p
->p_type
== PT_LOAD
)
3677 (_("%s: warning: Empty loadable segment detected\n"),
3678 bfd_get_filename (ibfd
));
3687 /* Now scan the sections in the input BFD again and attempt
3688 to add their corresponding output sections to the segment map.
3689 The problem here is how to handle an output section which has
3690 been moved (ie had its LMA changed). There are four possibilities:
3692 1. None of the sections have been moved.
3693 In this case we can continue to use the segment LMA from the
3696 2. All of the sections have been moved by the same amount.
3697 In this case we can change the segment's LMA to match the LMA
3698 of the first section.
3700 3. Some of the sections have been moved, others have not.
3701 In this case those sections which have not been moved can be
3702 placed in the current segment which will have to have its size,
3703 and possibly its LMA changed, and a new segment or segments will
3704 have to be created to contain the other sections.
3706 4. The sections have been moved, but not be the same amount.
3707 In this case we can change the segment's LMA to match the LMA
3708 of the first section and we will have to create a new segment
3709 or segments to contain the other sections.
3711 In order to save time, we allocate an array to hold the section
3712 pointers that we are interested in. As these sections get assigned
3713 to a segment, they are removed from this array. */
3715 sections
= (asection
**) bfd_malloc (sizeof (asection
*) * csecs
);
3716 if (sections
== NULL
)
3719 /* Step One: Scan for segment vs section LMA conflicts.
3720 Also add the sections to the section array allocated above.
3721 Also add the sections to the current segment. In the common
3722 case, where the sections have not been moved, this means that
3723 we have completely filled the segment, and there is nothing
3727 matching_lma
= false;
3730 for (j
= 0, s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
3732 os
= s
->output_section
;
3734 if ((((IS_CONTAINED_BY (s
->vma
, s
->_raw_size
, p
->p_vaddr
, p
)
3735 || IS_SOLARIS_PT_INTERP (p
, s
))
3736 && (s
->flags
& SEC_ALLOC
) != 0)
3737 || IS_COREFILE_NOTE (p
, s
))
3742 /* The Solaris native linker always sets p_paddr to 0.
3743 We try to catch that case here, and set it to the
3749 && (os
->vma
== (p
->p_vaddr
3750 + (m
->includes_filehdr
3753 + (m
->includes_phdrs
3754 ? iehdr
->e_phnum
* iehdr
->e_phentsize
3756 m
->p_paddr
= p
->p_vaddr
;
3758 /* Match up the physical address of the segment with the
3759 LMA address of the output section. */
3760 if (IS_CONTAINED_BY (os
->lma
, os
->_raw_size
, m
->p_paddr
, p
)
3761 || IS_COREFILE_NOTE (p
, s
))
3763 if (matching_lma
== 0)
3764 matching_lma
= os
->lma
;
3766 /* We assume that if the section fits within the segment
3767 that it does not overlap any other section within that
3769 m
->sections
[isec
++] = os
;
3771 else if (suggested_lma
== 0)
3772 suggested_lma
= os
->lma
;
3776 BFD_ASSERT (j
== csecs
);
3778 /* Step Two: Adjust the physical address of the current segment,
3782 /* All of the sections fitted within the segment as currently
3783 specified. This is the default case. Add the segment to
3784 the list of built segments and carry on to process the next
3785 program header in the input BFD. */
3793 else if (matching_lma
!= 0)
3795 /* At least one section fits inside the current segment.
3796 Keep it, but modify its physical address to match the
3797 LMA of the first section that fitted. */
3799 m
->p_paddr
= matching_lma
;
3803 /* None of the sections fitted inside the current segment.
3804 Change the current segment's physical address to match
3805 the LMA of the first section. */
3807 m
->p_paddr
= suggested_lma
;
3810 /* Step Three: Loop over the sections again, this time assigning
3811 those that fit to the current segment and remvoing them from the
3812 sections array; but making sure not to leave large gaps. Once all
3813 possible sections have been assigned to the current segment it is
3814 added to the list of built segments and if sections still remain
3815 to be assigned, a new segment is constructed before repeating
3823 /* Fill the current segment with sections that fit. */
3824 for (j
= 0; j
< csecs
; j
++)
3831 os
= s
->output_section
;
3833 if (IS_CONTAINED_BY (os
->lma
, os
->_raw_size
, m
->p_paddr
, p
)
3834 || IS_COREFILE_NOTE (p
, s
))
3838 /* If the first section in a segment does not start at
3839 the beginning of the segment, then something is wrong. */
3840 if (os
->lma
!= m
->p_paddr
)
3845 asection
* prev_sec
;
3846 bfd_vma maxpagesize
;
3848 prev_sec
= m
->sections
[m
->count
- 1];
3849 maxpagesize
= get_elf_backend_data (obfd
)->maxpagesize
;
3851 /* If the gap between the end of the previous section
3852 and the start of this section is more than maxpagesize
3853 then we need to start a new segment. */
3854 if (BFD_ALIGN (prev_sec
->lma
+ prev_sec
->_raw_size
, maxpagesize
)
3855 < BFD_ALIGN (os
->lma
, maxpagesize
))
3857 if (suggested_lma
== 0)
3858 suggested_lma
= os
->lma
;
3864 m
->sections
[m
->count
++] = os
;
3868 else if (suggested_lma
== 0)
3869 suggested_lma
= os
->lma
;
3872 BFD_ASSERT (m
->count
> 0);
3874 /* Add the current segment to the list of built segments. */
3880 /* We still have not allocated all of the sections to
3881 segments. Create a new segment here, initialise it
3882 and carry on looping. */
3884 m
= ((struct elf_segment_map
*)
3886 (sizeof (struct elf_segment_map
)
3887 + ((size_t) csecs
- 1) * sizeof (asection
*))));
3891 /* Initialise the fields of the segment map. Set the physical
3892 physical address to the LMA of the first section that has
3893 not yet been assigned. */
3896 m
->p_type
= p
->p_type
;
3897 m
->p_flags
= p
->p_flags
;
3898 m
->p_flags_valid
= 1;
3899 m
->p_paddr
= suggested_lma
;
3900 m
->p_paddr_valid
= 1;
3901 m
->includes_filehdr
= 0;
3902 m
->includes_phdrs
= 0;
3905 while (isec
< csecs
);
3910 /* The Solaris linker creates program headers in which all the
3911 p_paddr fields are zero. When we try to objcopy or strip such a
3912 file, we get confused. Check for this case, and if we find it
3913 reset the p_paddr_valid fields. */
3914 for (m
= mfirst
; m
!= NULL
; m
= m
->next
)
3915 if (m
->p_paddr
!= 0)
3919 for (m
= mfirst
; m
!= NULL
; m
= m
->next
)
3920 m
->p_paddr_valid
= 0;
3923 elf_tdata (obfd
)->segment_map
= mfirst
;
3926 /* Final Step: Sort the segments into ascending order of physical address. */
3929 struct elf_segment_map
* prev
;
3932 for (m
= mfirst
->next
; m
!= NULL
; prev
= m
, m
= m
->next
)
3934 /* Yes I know - its a bubble sort....*/
3935 if (m
->next
!= NULL
&& (m
->next
->p_paddr
< m
->p_paddr
))
3937 /* swap m and m->next */
3938 prev
->next
= m
->next
;
3939 m
->next
= m
->next
->next
;
3940 prev
->next
->next
= m
;
3949 #undef IS_CONTAINED_BY
3950 #undef IS_SOLARIS_PT_INTERP
3951 #undef IS_COREFILE_NOTE
3955 /* Copy private section information. This copies over the entsize
3956 field, and sometimes the info field. */
3959 _bfd_elf_copy_private_section_data (ibfd
, isec
, obfd
, osec
)
3965 Elf_Internal_Shdr
*ihdr
, *ohdr
;
3967 if (ibfd
->xvec
->flavour
!= bfd_target_elf_flavour
3968 || obfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
3971 /* Copy over private BFD data if it has not already been copied.
3972 This must be done here, rather than in the copy_private_bfd_data
3973 entry point, because the latter is called after the section
3974 contents have been set, which means that the program headers have
3975 already been worked out. */
3976 if (elf_tdata (obfd
)->segment_map
== NULL
3977 && elf_tdata (ibfd
)->phdr
!= NULL
)
3981 /* Only set up the segments if there are no more SEC_ALLOC
3982 sections. FIXME: This won't do the right thing if objcopy is
3983 used to remove the last SEC_ALLOC section, since objcopy
3984 won't call this routine in that case. */
3985 for (s
= isec
->next
; s
!= NULL
; s
= s
->next
)
3986 if ((s
->flags
& SEC_ALLOC
) != 0)
3990 if (! copy_private_bfd_data (ibfd
, obfd
))
3995 ihdr
= &elf_section_data (isec
)->this_hdr
;
3996 ohdr
= &elf_section_data (osec
)->this_hdr
;
3998 ohdr
->sh_entsize
= ihdr
->sh_entsize
;
4000 if (ihdr
->sh_type
== SHT_SYMTAB
4001 || ihdr
->sh_type
== SHT_DYNSYM
4002 || ihdr
->sh_type
== SHT_GNU_verneed
4003 || ihdr
->sh_type
== SHT_GNU_verdef
)
4004 ohdr
->sh_info
= ihdr
->sh_info
;
4006 elf_section_data (osec
)->use_rela_p
4007 = elf_section_data (isec
)->use_rela_p
;
4012 /* Copy private symbol information. If this symbol is in a section
4013 which we did not map into a BFD section, try to map the section
4014 index correctly. We use special macro definitions for the mapped
4015 section indices; these definitions are interpreted by the
4016 swap_out_syms function. */
4018 #define MAP_ONESYMTAB (SHN_LORESERVE - 1)
4019 #define MAP_DYNSYMTAB (SHN_LORESERVE - 2)
4020 #define MAP_STRTAB (SHN_LORESERVE - 3)
4021 #define MAP_SHSTRTAB (SHN_LORESERVE - 4)
4024 _bfd_elf_copy_private_symbol_data (ibfd
, isymarg
, obfd
, osymarg
)
4030 elf_symbol_type
*isym
, *osym
;
4032 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
4033 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
4036 isym
= elf_symbol_from (ibfd
, isymarg
);
4037 osym
= elf_symbol_from (obfd
, osymarg
);
4041 && bfd_is_abs_section (isym
->symbol
.section
))
4045 shndx
= isym
->internal_elf_sym
.st_shndx
;
4046 if (shndx
== elf_onesymtab (ibfd
))
4047 shndx
= MAP_ONESYMTAB
;
4048 else if (shndx
== elf_dynsymtab (ibfd
))
4049 shndx
= MAP_DYNSYMTAB
;
4050 else if (shndx
== elf_tdata (ibfd
)->strtab_section
)
4052 else if (shndx
== elf_tdata (ibfd
)->shstrtab_section
)
4053 shndx
= MAP_SHSTRTAB
;
4054 osym
->internal_elf_sym
.st_shndx
= shndx
;
4060 /* Swap out the symbols. */
4063 swap_out_syms (abfd
, sttp
, relocatable_p
)
4065 struct bfd_strtab_hash
**sttp
;
4068 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
4070 if (!elf_map_symbols (abfd
))
4073 /* Dump out the symtabs. */
4075 int symcount
= bfd_get_symcount (abfd
);
4076 asymbol
**syms
= bfd_get_outsymbols (abfd
);
4077 struct bfd_strtab_hash
*stt
;
4078 Elf_Internal_Shdr
*symtab_hdr
;
4079 Elf_Internal_Shdr
*symstrtab_hdr
;
4080 char *outbound_syms
;
4083 stt
= _bfd_elf_stringtab_init ();
4087 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4088 symtab_hdr
->sh_type
= SHT_SYMTAB
;
4089 symtab_hdr
->sh_entsize
= bed
->s
->sizeof_sym
;
4090 symtab_hdr
->sh_size
= symtab_hdr
->sh_entsize
* (symcount
+ 1);
4091 symtab_hdr
->sh_info
= elf_num_locals (abfd
) + 1;
4092 symtab_hdr
->sh_addralign
= bed
->s
->file_align
;
4094 symstrtab_hdr
= &elf_tdata (abfd
)->strtab_hdr
;
4095 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
4097 outbound_syms
= bfd_alloc (abfd
,
4098 (1 + symcount
) * bed
->s
->sizeof_sym
);
4099 if (outbound_syms
== NULL
)
4101 symtab_hdr
->contents
= (PTR
) outbound_syms
;
4103 /* now generate the data (for "contents") */
4105 /* Fill in zeroth symbol and swap it out. */
4106 Elf_Internal_Sym sym
;
4112 sym
.st_shndx
= SHN_UNDEF
;
4113 bed
->s
->swap_symbol_out (abfd
, &sym
, (PTR
) outbound_syms
);
4114 outbound_syms
+= bed
->s
->sizeof_sym
;
4116 for (idx
= 0; idx
< symcount
; idx
++)
4118 Elf_Internal_Sym sym
;
4119 bfd_vma value
= syms
[idx
]->value
;
4120 elf_symbol_type
*type_ptr
;
4121 flagword flags
= syms
[idx
]->flags
;
4124 if (flags
& BSF_SECTION_SYM
)
4125 /* Section symbols have no names. */
4129 sym
.st_name
= (unsigned long) _bfd_stringtab_add (stt
,
4132 if (sym
.st_name
== (unsigned long) -1)
4136 type_ptr
= elf_symbol_from (abfd
, syms
[idx
]);
4138 if ((flags
& BSF_SECTION_SYM
) == 0
4139 && bfd_is_com_section (syms
[idx
]->section
))
4141 /* ELF common symbols put the alignment into the `value' field,
4142 and the size into the `size' field. This is backwards from
4143 how BFD handles it, so reverse it here. */
4144 sym
.st_size
= value
;
4145 if (type_ptr
== NULL
4146 || type_ptr
->internal_elf_sym
.st_value
== 0)
4147 sym
.st_value
= value
>= 16 ? 16 : (1 << bfd_log2 (value
));
4149 sym
.st_value
= type_ptr
->internal_elf_sym
.st_value
;
4150 sym
.st_shndx
= _bfd_elf_section_from_bfd_section
4151 (abfd
, syms
[idx
]->section
);
4155 asection
*sec
= syms
[idx
]->section
;
4158 if (sec
->output_section
)
4160 value
+= sec
->output_offset
;
4161 sec
= sec
->output_section
;
4163 /* Don't add in the section vma for relocatable output. */
4164 if (! relocatable_p
)
4166 sym
.st_value
= value
;
4167 sym
.st_size
= type_ptr
? type_ptr
->internal_elf_sym
.st_size
: 0;
4169 if (bfd_is_abs_section (sec
)
4171 && type_ptr
->internal_elf_sym
.st_shndx
!= 0)
4173 /* This symbol is in a real ELF section which we did
4174 not create as a BFD section. Undo the mapping done
4175 by copy_private_symbol_data. */
4176 shndx
= type_ptr
->internal_elf_sym
.st_shndx
;
4180 shndx
= elf_onesymtab (abfd
);
4183 shndx
= elf_dynsymtab (abfd
);
4186 shndx
= elf_tdata (abfd
)->strtab_section
;
4189 shndx
= elf_tdata (abfd
)->shstrtab_section
;
4197 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
4203 /* Writing this would be a hell of a lot easier if
4204 we had some decent documentation on bfd, and
4205 knew what to expect of the library, and what to
4206 demand of applications. For example, it
4207 appears that `objcopy' might not set the
4208 section of a symbol to be a section that is
4209 actually in the output file. */
4210 sec2
= bfd_get_section_by_name (abfd
, sec
->name
);
4211 BFD_ASSERT (sec2
!= 0);
4212 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec2
);
4213 BFD_ASSERT (shndx
!= -1);
4217 sym
.st_shndx
= shndx
;
4220 if ((flags
& BSF_FUNCTION
) != 0)
4222 else if ((flags
& BSF_OBJECT
) != 0)
4227 /* Processor-specific types */
4228 if (bed
->elf_backend_get_symbol_type
)
4229 type
= (*bed
->elf_backend_get_symbol_type
) (&type_ptr
->internal_elf_sym
, type
);
4231 if (flags
& BSF_SECTION_SYM
)
4232 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_SECTION
);
4233 else if (bfd_is_com_section (syms
[idx
]->section
))
4234 sym
.st_info
= ELF_ST_INFO (STB_GLOBAL
, type
);
4235 else if (bfd_is_und_section (syms
[idx
]->section
))
4236 sym
.st_info
= ELF_ST_INFO (((flags
& BSF_WEAK
)
4240 else if (flags
& BSF_FILE
)
4241 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_FILE
);
4244 int bind
= STB_LOCAL
;
4246 if (flags
& BSF_LOCAL
)
4248 else if (flags
& BSF_WEAK
)
4250 else if (flags
& BSF_GLOBAL
)
4253 sym
.st_info
= ELF_ST_INFO (bind
, type
);
4256 if (type_ptr
!= NULL
)
4257 sym
.st_other
= type_ptr
->internal_elf_sym
.st_other
;
4261 bed
->s
->swap_symbol_out (abfd
, &sym
, (PTR
) outbound_syms
);
4262 outbound_syms
+= bed
->s
->sizeof_sym
;
4266 symstrtab_hdr
->sh_size
= _bfd_stringtab_size (stt
);
4267 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
4269 symstrtab_hdr
->sh_flags
= 0;
4270 symstrtab_hdr
->sh_addr
= 0;
4271 symstrtab_hdr
->sh_entsize
= 0;
4272 symstrtab_hdr
->sh_link
= 0;
4273 symstrtab_hdr
->sh_info
= 0;
4274 symstrtab_hdr
->sh_addralign
= 1;
4280 /* Return the number of bytes required to hold the symtab vector.
4282 Note that we base it on the count plus 1, since we will null terminate
4283 the vector allocated based on this size. However, the ELF symbol table
4284 always has a dummy entry as symbol #0, so it ends up even. */
4287 _bfd_elf_get_symtab_upper_bound (abfd
)
4292 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4294 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
4295 symtab_size
= (symcount
- 1 + 1) * (sizeof (asymbol
*));
4301 _bfd_elf_get_dynamic_symtab_upper_bound (abfd
)
4306 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->dynsymtab_hdr
;
4308 if (elf_dynsymtab (abfd
) == 0)
4310 bfd_set_error (bfd_error_invalid_operation
);
4314 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
4315 symtab_size
= (symcount
- 1 + 1) * (sizeof (asymbol
*));
4321 _bfd_elf_get_reloc_upper_bound (abfd
, asect
)
4322 bfd
*abfd ATTRIBUTE_UNUSED
;
4325 return (asect
->reloc_count
+ 1) * sizeof (arelent
*);
4328 /* Canonicalize the relocs. */
4331 _bfd_elf_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
4340 if (! get_elf_backend_data (abfd
)->s
->slurp_reloc_table (abfd
,
4346 tblptr
= section
->relocation
;
4347 for (i
= 0; i
< section
->reloc_count
; i
++)
4348 *relptr
++ = tblptr
++;
4352 return section
->reloc_count
;
4356 _bfd_elf_get_symtab (abfd
, alocation
)
4358 asymbol
**alocation
;
4360 long symcount
= get_elf_backend_data (abfd
)->s
->slurp_symbol_table
4361 (abfd
, alocation
, false);
4364 bfd_get_symcount (abfd
) = symcount
;
4369 _bfd_elf_canonicalize_dynamic_symtab (abfd
, alocation
)
4371 asymbol
**alocation
;
4373 return get_elf_backend_data (abfd
)->s
->slurp_symbol_table
4374 (abfd
, alocation
, true);
4377 /* Return the size required for the dynamic reloc entries. Any
4378 section that was actually installed in the BFD, and has type
4379 SHT_REL or SHT_RELA, and uses the dynamic symbol table, is
4380 considered to be a dynamic reloc section. */
4383 _bfd_elf_get_dynamic_reloc_upper_bound (abfd
)
4389 if (elf_dynsymtab (abfd
) == 0)
4391 bfd_set_error (bfd_error_invalid_operation
);
4395 ret
= sizeof (arelent
*);
4396 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
4397 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
4398 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_REL
4399 || elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
4400 ret
+= ((s
->_raw_size
/ elf_section_data (s
)->this_hdr
.sh_entsize
)
4401 * sizeof (arelent
*));
4406 /* Canonicalize the dynamic relocation entries. Note that we return
4407 the dynamic relocations as a single block, although they are
4408 actually associated with particular sections; the interface, which
4409 was designed for SunOS style shared libraries, expects that there
4410 is only one set of dynamic relocs. Any section that was actually
4411 installed in the BFD, and has type SHT_REL or SHT_RELA, and uses
4412 the dynamic symbol table, is considered to be a dynamic reloc
4416 _bfd_elf_canonicalize_dynamic_reloc (abfd
, storage
, syms
)
4421 boolean (*slurp_relocs
) PARAMS ((bfd
*, asection
*, asymbol
**, boolean
));
4425 if (elf_dynsymtab (abfd
) == 0)
4427 bfd_set_error (bfd_error_invalid_operation
);
4431 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
4433 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
4435 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
4436 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_REL
4437 || elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
4442 if (! (*slurp_relocs
) (abfd
, s
, syms
, true))
4444 count
= s
->_raw_size
/ elf_section_data (s
)->this_hdr
.sh_entsize
;
4446 for (i
= 0; i
< count
; i
++)
4457 /* Read in the version information. */
4460 _bfd_elf_slurp_version_tables (abfd
)
4463 bfd_byte
*contents
= NULL
;
4465 if (elf_dynverdef (abfd
) != 0)
4467 Elf_Internal_Shdr
*hdr
;
4468 Elf_External_Verdef
*everdef
;
4469 Elf_Internal_Verdef
*iverdef
;
4472 hdr
= &elf_tdata (abfd
)->dynverdef_hdr
;
4474 elf_tdata (abfd
)->verdef
=
4475 ((Elf_Internal_Verdef
*)
4476 bfd_zalloc (abfd
, hdr
->sh_info
* sizeof (Elf_Internal_Verdef
)));
4477 if (elf_tdata (abfd
)->verdef
== NULL
)
4480 elf_tdata (abfd
)->cverdefs
= hdr
->sh_info
;
4482 contents
= (bfd_byte
*) bfd_malloc (hdr
->sh_size
);
4483 if (contents
== NULL
)
4485 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
4486 || bfd_read ((PTR
) contents
, 1, hdr
->sh_size
, abfd
) != hdr
->sh_size
)
4489 everdef
= (Elf_External_Verdef
*) contents
;
4490 iverdef
= elf_tdata (abfd
)->verdef
;
4491 for (i
= 0; i
< hdr
->sh_info
; i
++, iverdef
++)
4493 Elf_External_Verdaux
*everdaux
;
4494 Elf_Internal_Verdaux
*iverdaux
;
4497 _bfd_elf_swap_verdef_in (abfd
, everdef
, iverdef
);
4499 iverdef
->vd_bfd
= abfd
;
4501 iverdef
->vd_auxptr
= ((Elf_Internal_Verdaux
*)
4504 * sizeof (Elf_Internal_Verdaux
))));
4505 if (iverdef
->vd_auxptr
== NULL
)
4508 everdaux
= ((Elf_External_Verdaux
*)
4509 ((bfd_byte
*) everdef
+ iverdef
->vd_aux
));
4510 iverdaux
= iverdef
->vd_auxptr
;
4511 for (j
= 0; j
< iverdef
->vd_cnt
; j
++, iverdaux
++)
4513 _bfd_elf_swap_verdaux_in (abfd
, everdaux
, iverdaux
);
4515 iverdaux
->vda_nodename
=
4516 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
4517 iverdaux
->vda_name
);
4518 if (iverdaux
->vda_nodename
== NULL
)
4521 if (j
+ 1 < iverdef
->vd_cnt
)
4522 iverdaux
->vda_nextptr
= iverdaux
+ 1;
4524 iverdaux
->vda_nextptr
= NULL
;
4526 everdaux
= ((Elf_External_Verdaux
*)
4527 ((bfd_byte
*) everdaux
+ iverdaux
->vda_next
));
4530 iverdef
->vd_nodename
= iverdef
->vd_auxptr
->vda_nodename
;
4532 if (i
+ 1 < hdr
->sh_info
)
4533 iverdef
->vd_nextdef
= iverdef
+ 1;
4535 iverdef
->vd_nextdef
= NULL
;
4537 everdef
= ((Elf_External_Verdef
*)
4538 ((bfd_byte
*) everdef
+ iverdef
->vd_next
));
4545 if (elf_dynverref (abfd
) != 0)
4547 Elf_Internal_Shdr
*hdr
;
4548 Elf_External_Verneed
*everneed
;
4549 Elf_Internal_Verneed
*iverneed
;
4552 hdr
= &elf_tdata (abfd
)->dynverref_hdr
;
4554 elf_tdata (abfd
)->verref
=
4555 ((Elf_Internal_Verneed
*)
4556 bfd_zalloc (abfd
, hdr
->sh_info
* sizeof (Elf_Internal_Verneed
)));
4557 if (elf_tdata (abfd
)->verref
== NULL
)
4560 elf_tdata (abfd
)->cverrefs
= hdr
->sh_info
;
4562 contents
= (bfd_byte
*) bfd_malloc (hdr
->sh_size
);
4563 if (contents
== NULL
)
4565 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
4566 || bfd_read ((PTR
) contents
, 1, hdr
->sh_size
, abfd
) != hdr
->sh_size
)
4569 everneed
= (Elf_External_Verneed
*) contents
;
4570 iverneed
= elf_tdata (abfd
)->verref
;
4571 for (i
= 0; i
< hdr
->sh_info
; i
++, iverneed
++)
4573 Elf_External_Vernaux
*evernaux
;
4574 Elf_Internal_Vernaux
*ivernaux
;
4577 _bfd_elf_swap_verneed_in (abfd
, everneed
, iverneed
);
4579 iverneed
->vn_bfd
= abfd
;
4581 iverneed
->vn_filename
=
4582 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
4584 if (iverneed
->vn_filename
== NULL
)
4587 iverneed
->vn_auxptr
=
4588 ((Elf_Internal_Vernaux
*)
4590 iverneed
->vn_cnt
* sizeof (Elf_Internal_Vernaux
)));
4592 evernaux
= ((Elf_External_Vernaux
*)
4593 ((bfd_byte
*) everneed
+ iverneed
->vn_aux
));
4594 ivernaux
= iverneed
->vn_auxptr
;
4595 for (j
= 0; j
< iverneed
->vn_cnt
; j
++, ivernaux
++)
4597 _bfd_elf_swap_vernaux_in (abfd
, evernaux
, ivernaux
);
4599 ivernaux
->vna_nodename
=
4600 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
4601 ivernaux
->vna_name
);
4602 if (ivernaux
->vna_nodename
== NULL
)
4605 if (j
+ 1 < iverneed
->vn_cnt
)
4606 ivernaux
->vna_nextptr
= ivernaux
+ 1;
4608 ivernaux
->vna_nextptr
= NULL
;
4610 evernaux
= ((Elf_External_Vernaux
*)
4611 ((bfd_byte
*) evernaux
+ ivernaux
->vna_next
));
4614 if (i
+ 1 < hdr
->sh_info
)
4615 iverneed
->vn_nextref
= iverneed
+ 1;
4617 iverneed
->vn_nextref
= NULL
;
4619 everneed
= ((Elf_External_Verneed
*)
4620 ((bfd_byte
*) everneed
+ iverneed
->vn_next
));
4630 if (contents
== NULL
)
4636 _bfd_elf_make_empty_symbol (abfd
)
4639 elf_symbol_type
*newsym
;
4641 newsym
= (elf_symbol_type
*) bfd_zalloc (abfd
, sizeof (elf_symbol_type
));
4646 newsym
->symbol
.the_bfd
= abfd
;
4647 return &newsym
->symbol
;
4652 _bfd_elf_get_symbol_info (ignore_abfd
, symbol
, ret
)
4653 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
4657 bfd_symbol_info (symbol
, ret
);
4660 /* Return whether a symbol name implies a local symbol. Most targets
4661 use this function for the is_local_label_name entry point, but some
4665 _bfd_elf_is_local_label_name (abfd
, name
)
4666 bfd
*abfd ATTRIBUTE_UNUSED
;
4669 /* Normal local symbols start with ``.L''. */
4670 if (name
[0] == '.' && name
[1] == 'L')
4673 /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate
4674 DWARF debugging symbols starting with ``..''. */
4675 if (name
[0] == '.' && name
[1] == '.')
4678 /* gcc will sometimes generate symbols beginning with ``_.L_'' when
4679 emitting DWARF debugging output. I suspect this is actually a
4680 small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call
4681 ASM_GENERATE_INTERNAL_LABEL, and this causes the leading
4682 underscore to be emitted on some ELF targets). For ease of use,
4683 we treat such symbols as local. */
4684 if (name
[0] == '_' && name
[1] == '.' && name
[2] == 'L' && name
[3] == '_')
4691 _bfd_elf_get_lineno (ignore_abfd
, symbol
)
4692 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
4693 asymbol
*symbol ATTRIBUTE_UNUSED
;
4700 _bfd_elf_set_arch_mach (abfd
, arch
, machine
)
4702 enum bfd_architecture arch
;
4703 unsigned long machine
;
4705 /* If this isn't the right architecture for this backend, and this
4706 isn't the generic backend, fail. */
4707 if (arch
!= get_elf_backend_data (abfd
)->arch
4708 && arch
!= bfd_arch_unknown
4709 && get_elf_backend_data (abfd
)->arch
!= bfd_arch_unknown
)
4712 return bfd_default_set_arch_mach (abfd
, arch
, machine
);
4715 /* Find the nearest line to a particular section and offset, for error
4719 _bfd_elf_find_nearest_line (abfd
,
4730 CONST
char **filename_ptr
;
4731 CONST
char **functionname_ptr
;
4732 unsigned int *line_ptr
;
4735 const char *filename
;
4740 if (_bfd_dwarf1_find_nearest_line (abfd
, section
, symbols
, offset
,
4741 filename_ptr
, functionname_ptr
,
4745 if (_bfd_dwarf2_find_nearest_line (abfd
, section
, symbols
, offset
,
4746 filename_ptr
, functionname_ptr
,
4750 if (! _bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
4751 &found
, filename_ptr
,
4752 functionname_ptr
, line_ptr
,
4753 &elf_tdata (abfd
)->line_info
))
4758 if (symbols
== NULL
)
4765 for (p
= symbols
; *p
!= NULL
; p
++)
4769 q
= (elf_symbol_type
*) *p
;
4771 if (bfd_get_section (&q
->symbol
) != section
)
4774 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
4779 filename
= bfd_asymbol_name (&q
->symbol
);
4783 if (q
->symbol
.section
== section
4784 && q
->symbol
.value
>= low_func
4785 && q
->symbol
.value
<= offset
)
4787 func
= (asymbol
*) q
;
4788 low_func
= q
->symbol
.value
;
4797 *filename_ptr
= filename
;
4798 *functionname_ptr
= bfd_asymbol_name (func
);
4804 _bfd_elf_sizeof_headers (abfd
, reloc
)
4810 ret
= get_elf_backend_data (abfd
)->s
->sizeof_ehdr
;
4812 ret
+= get_program_header_size (abfd
);
4817 _bfd_elf_set_section_contents (abfd
, section
, location
, offset
, count
)
4822 bfd_size_type count
;
4824 Elf_Internal_Shdr
*hdr
;
4826 if (! abfd
->output_has_begun
4827 && ! _bfd_elf_compute_section_file_positions
4828 (abfd
, (struct bfd_link_info
*) NULL
))
4831 hdr
= &elf_section_data (section
)->this_hdr
;
4833 if (bfd_seek (abfd
, hdr
->sh_offset
+ offset
, SEEK_SET
) == -1)
4835 if (bfd_write (location
, 1, count
, abfd
) != count
)
4842 _bfd_elf_no_info_to_howto (abfd
, cache_ptr
, dst
)
4843 bfd
*abfd ATTRIBUTE_UNUSED
;
4844 arelent
*cache_ptr ATTRIBUTE_UNUSED
;
4845 Elf_Internal_Rela
*dst ATTRIBUTE_UNUSED
;
4852 _bfd_elf_no_info_to_howto_rel (abfd
, cache_ptr
, dst
)
4855 Elf_Internal_Rel
*dst
;
4861 /* Try to convert a non-ELF reloc into an ELF one. */
4864 _bfd_elf_validate_reloc (abfd
, areloc
)
4868 /* Check whether we really have an ELF howto. */
4870 if ((*areloc
->sym_ptr_ptr
)->the_bfd
->xvec
!= abfd
->xvec
)
4872 bfd_reloc_code_real_type code
;
4873 reloc_howto_type
*howto
;
4875 /* Alien reloc: Try to determine its type to replace it with an
4876 equivalent ELF reloc. */
4878 if (areloc
->howto
->pc_relative
)
4880 switch (areloc
->howto
->bitsize
)
4883 code
= BFD_RELOC_8_PCREL
;
4886 code
= BFD_RELOC_12_PCREL
;
4889 code
= BFD_RELOC_16_PCREL
;
4892 code
= BFD_RELOC_24_PCREL
;
4895 code
= BFD_RELOC_32_PCREL
;
4898 code
= BFD_RELOC_64_PCREL
;
4904 howto
= bfd_reloc_type_lookup (abfd
, code
);
4906 if (areloc
->howto
->pcrel_offset
!= howto
->pcrel_offset
)
4908 if (howto
->pcrel_offset
)
4909 areloc
->addend
+= areloc
->address
;
4911 areloc
->addend
-= areloc
->address
; /* addend is unsigned!! */
4916 switch (areloc
->howto
->bitsize
)
4922 code
= BFD_RELOC_14
;
4925 code
= BFD_RELOC_16
;
4928 code
= BFD_RELOC_26
;
4931 code
= BFD_RELOC_32
;
4934 code
= BFD_RELOC_64
;
4940 howto
= bfd_reloc_type_lookup (abfd
, code
);
4944 areloc
->howto
= howto
;
4952 (*_bfd_error_handler
)
4953 (_("%s: unsupported relocation type %s"),
4954 bfd_get_filename (abfd
), areloc
->howto
->name
);
4955 bfd_set_error (bfd_error_bad_value
);
4960 _bfd_elf_close_and_cleanup (abfd
)
4963 if (bfd_get_format (abfd
) == bfd_object
)
4965 if (elf_shstrtab (abfd
) != NULL
)
4966 _bfd_stringtab_free (elf_shstrtab (abfd
));
4969 return _bfd_generic_close_and_cleanup (abfd
);
4972 /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY
4973 in the relocation's offset. Thus we cannot allow any sort of sanity
4974 range-checking to interfere. There is nothing else to do in processing
4977 bfd_reloc_status_type
4978 _bfd_elf_rel_vtable_reloc_fn (abfd
, re
, symbol
, data
, is
, obfd
, errmsg
)
4979 bfd
*abfd ATTRIBUTE_UNUSED
;
4980 arelent
*re ATTRIBUTE_UNUSED
;
4981 struct symbol_cache_entry
*symbol ATTRIBUTE_UNUSED
;
4982 PTR data ATTRIBUTE_UNUSED
;
4983 asection
*is ATTRIBUTE_UNUSED
;
4984 bfd
*obfd ATTRIBUTE_UNUSED
;
4985 char **errmsg ATTRIBUTE_UNUSED
;
4987 return bfd_reloc_ok
;
4991 /* Elf core file support. Much of this only works on native
4992 toolchains, since we rely on knowing the
4993 machine-dependent procfs structure in order to pick
4994 out details about the corefile. */
4996 #ifdef HAVE_SYS_PROCFS_H
4997 # include <sys/procfs.h>
5001 /* Define offsetof for those systems which lack it. */
5004 # define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
5008 /* FIXME: this is kinda wrong, but it's what gdb wants. */
5011 elfcore_make_pid (abfd
)
5014 return ((elf_tdata (abfd
)->core_lwpid
<< 16)
5015 + (elf_tdata (abfd
)->core_pid
));
5019 /* If there isn't a section called NAME, make one, using
5020 data from SECT. Note, this function will generate a
5021 reference to NAME, so you shouldn't deallocate or
5025 elfcore_maybe_make_sect (abfd
, name
, sect
)
5032 if (bfd_get_section_by_name (abfd
, name
) != NULL
)
5035 sect2
= bfd_make_section (abfd
, name
);
5039 sect2
->_raw_size
= sect
->_raw_size
;
5040 sect2
->filepos
= sect
->filepos
;
5041 sect2
->flags
= sect
->flags
;
5042 sect2
->alignment_power
= sect
->alignment_power
;
5047 /* prstatus_t exists on:
5049 linux 2.[01] + glibc
5053 #if defined (HAVE_PRSTATUS_T)
5055 elfcore_grok_prstatus (abfd
, note
)
5057 Elf_Internal_Note
* note
;
5064 if (note
->descsz
!= sizeof (prstat
))
5067 memcpy (&prstat
, note
->descdata
, sizeof (prstat
));
5069 elf_tdata (abfd
)->core_signal
= prstat
.pr_cursig
;
5070 elf_tdata (abfd
)->core_pid
= prstat
.pr_pid
;
5072 /* pr_who exists on:
5075 pr_who doesn't exist on:
5078 #if defined (HAVE_PRSTATUS_T_PR_WHO)
5079 elf_tdata (abfd
)->core_lwpid
= prstat
.pr_who
;
5082 /* Make a ".reg/999" section. */
5084 sprintf (buf
, ".reg/%d", elfcore_make_pid (abfd
));
5085 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5090 sect
= bfd_make_section (abfd
, name
);
5093 sect
->_raw_size
= sizeof (prstat
.pr_reg
);
5094 sect
->filepos
= note
->descpos
+ offsetof (prstatus_t
, pr_reg
);
5095 sect
->flags
= SEC_HAS_CONTENTS
;
5096 sect
->alignment_power
= 2;
5098 if (! elfcore_maybe_make_sect (abfd
, ".reg", sect
))
5103 #endif /* defined (HAVE_PRSTATUS_T) */
5106 /* Create a pseudosection containing the exact contents of NOTE. This
5107 actually creates up to two pseudosections:
5108 - For the single-threaded case, a section named NAME, unless
5109 such a section already exists.
5110 - For the multi-threaded case, a section named "NAME/PID", where
5111 PID is elfcore_make_pid (abfd).
5112 Both pseudosections have identical contents: the contents of NOTE. */
5115 elfcore_make_note_pseudosection (abfd
, name
, note
)
5118 Elf_Internal_Note
* note
;
5121 char *threaded_name
;
5124 /* Build the section name. */
5126 sprintf (buf
, "%s/%d", name
, elfcore_make_pid (abfd
));
5127 threaded_name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5128 if (threaded_name
== NULL
)
5130 strcpy (threaded_name
, buf
);
5132 sect
= bfd_make_section (abfd
, threaded_name
);
5135 sect
->_raw_size
= note
->descsz
;
5136 sect
->filepos
= note
->descpos
;
5137 sect
->flags
= SEC_HAS_CONTENTS
;
5138 sect
->alignment_power
= 2;
5140 if (! elfcore_maybe_make_sect (abfd
, name
, sect
))
5147 /* There isn't a consistent prfpregset_t across platforms,
5148 but it doesn't matter, because we don't have to pick this
5149 data structure apart. */
5151 elfcore_grok_prfpreg (abfd
, note
)
5153 Elf_Internal_Note
* note
;
5155 return elfcore_make_note_pseudosection (abfd
, ".reg2", note
);
5159 /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note
5160 type of 5 (NT_PRXFPREG). Just include the whole note's contents
5163 elfcore_grok_prxfpreg (abfd
, note
)
5165 Elf_Internal_Note
* note
;
5167 return elfcore_make_note_pseudosection (abfd
, ".reg-xfp", note
);
5171 #if defined (HAVE_PRPSINFO_T)
5172 # define elfcore_psinfo_t prpsinfo_t
5175 #if defined (HAVE_PSINFO_T)
5176 # define elfcore_psinfo_t psinfo_t
5180 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
5182 /* return a malloc'ed copy of a string at START which is at
5183 most MAX bytes long, possibly without a terminating '\0'.
5184 the copy will always have a terminating '\0'. */
5187 elfcore_strndup (abfd
, start
, max
)
5193 char* end
= memchr (start
, '\0', max
);
5201 dup
= bfd_alloc (abfd
, len
+ 1);
5205 memcpy (dup
, start
, len
);
5212 elfcore_grok_psinfo (abfd
, note
)
5214 Elf_Internal_Note
* note
;
5216 elfcore_psinfo_t psinfo
;
5218 if (note
->descsz
!= sizeof (elfcore_psinfo_t
))
5221 memcpy (&psinfo
, note
->descdata
, note
->descsz
);
5223 elf_tdata (abfd
)->core_program
5224 = elfcore_strndup (abfd
, psinfo
.pr_fname
, sizeof (psinfo
.pr_fname
));
5226 elf_tdata (abfd
)->core_command
5227 = elfcore_strndup (abfd
, psinfo
.pr_psargs
, sizeof (psinfo
.pr_psargs
));
5229 /* Note that for some reason, a spurious space is tacked
5230 onto the end of the args in some (at least one anyway)
5231 implementations, so strip it off if it exists. */
5234 char* command
= elf_tdata (abfd
)->core_command
;
5235 int n
= strlen (command
);
5237 if (0 < n
&& command
[n
- 1] == ' ')
5238 command
[n
- 1] = '\0';
5243 #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */
5246 #if defined (HAVE_PSTATUS_T)
5248 elfcore_grok_pstatus (abfd
, note
)
5250 Elf_Internal_Note
* note
;
5254 if (note
->descsz
!= sizeof (pstat
))
5257 memcpy (&pstat
, note
->descdata
, sizeof (pstat
));
5259 elf_tdata (abfd
)->core_pid
= pstat
.pr_pid
;
5261 /* Could grab some more details from the "representative"
5262 lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an
5263 NT_LWPSTATUS note, presumably. */
5267 #endif /* defined (HAVE_PSTATUS_T) */
5270 #if defined (HAVE_LWPSTATUS_T)
5272 elfcore_grok_lwpstatus (abfd
, note
)
5274 Elf_Internal_Note
* note
;
5276 lwpstatus_t lwpstat
;
5281 if (note
->descsz
!= sizeof (lwpstat
))
5284 memcpy (&lwpstat
, note
->descdata
, sizeof (lwpstat
));
5286 elf_tdata (abfd
)->core_lwpid
= lwpstat
.pr_lwpid
;
5287 elf_tdata (abfd
)->core_signal
= lwpstat
.pr_cursig
;
5289 /* Make a ".reg/999" section. */
5291 sprintf (buf
, ".reg/%d", elfcore_make_pid (abfd
));
5292 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5297 sect
= bfd_make_section (abfd
, name
);
5301 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
5302 sect
->_raw_size
= sizeof (lwpstat
.pr_context
.uc_mcontext
.gregs
);
5303 sect
->filepos
= note
->descpos
5304 + offsetof (lwpstatus_t
, pr_context
.uc_mcontext
.gregs
);
5307 #if defined (HAVE_LWPSTATUS_T_PR_REG)
5308 sect
->_raw_size
= sizeof (lwpstat
.pr_reg
);
5309 sect
->filepos
= note
->descpos
+ offsetof (lwpstatus_t
, pr_reg
);
5312 sect
->flags
= SEC_HAS_CONTENTS
;
5313 sect
->alignment_power
= 2;
5315 if (!elfcore_maybe_make_sect (abfd
, ".reg", sect
))
5318 /* Make a ".reg2/999" section */
5320 sprintf (buf
, ".reg2/%d", elfcore_make_pid (abfd
));
5321 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5326 sect
= bfd_make_section (abfd
, name
);
5330 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
5331 sect
->_raw_size
= sizeof (lwpstat
.pr_context
.uc_mcontext
.fpregs
);
5332 sect
->filepos
= note
->descpos
5333 + offsetof (lwpstatus_t
, pr_context
.uc_mcontext
.fpregs
);
5336 #if defined (HAVE_LWPSTATUS_T_PR_FPREG)
5337 sect
->_raw_size
= sizeof (lwpstat
.pr_fpreg
);
5338 sect
->filepos
= note
->descpos
+ offsetof (lwpstatus_t
, pr_fpreg
);
5341 sect
->flags
= SEC_HAS_CONTENTS
;
5342 sect
->alignment_power
= 2;
5344 if (!elfcore_maybe_make_sect (abfd
, ".reg2", sect
))
5349 #endif /* defined (HAVE_LWPSTATUS_T) */
5351 #if defined (HAVE_WIN32_PSTATUS_T)
5353 elfcore_grok_win32pstatus (abfd
, note
)
5355 Elf_Internal_Note
* note
;
5360 win32_pstatus_t pstatus
;
5362 if (note
->descsz
< sizeof (pstatus
))
5365 memcpy (& pstatus
, note
->descdata
, note
->descsz
);
5367 switch (pstatus
.data_type
)
5369 case NOTE_INFO_PROCESS
:
5370 /* FIXME: need to add ->core_command. */
5371 elf_tdata (abfd
)->core_signal
= pstatus
.data
.process_info
.signal
;
5372 elf_tdata (abfd
)->core_pid
= pstatus
.data
.process_info
.pid
;
5375 case NOTE_INFO_THREAD
:
5376 /* Make a ".reg/999" section. */
5377 sprintf (buf
, ".reg/%d", pstatus
.data
.thread_info
.tid
);
5379 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5385 sect
= bfd_make_section (abfd
, name
);
5389 sect
->_raw_size
= sizeof (pstatus
.data
.thread_info
.thread_context
);
5390 sect
->filepos
= note
->descpos
+ offsetof (struct win32_pstatus
,
5391 data
.thread_info
.thread_context
);
5392 sect
->flags
= SEC_HAS_CONTENTS
;
5393 sect
->alignment_power
= 2;
5395 if (pstatus
.data
.thread_info
.is_active_thread
)
5396 if (! elfcore_maybe_make_sect (abfd
, ".reg", sect
))
5400 case NOTE_INFO_MODULE
:
5401 /* Make a ".module/xxxxxxxx" section. */
5402 sprintf (buf
, ".module/%08x" , pstatus
.data
.module_info
.base_address
);
5404 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5410 sect
= bfd_make_section (abfd
, name
);
5415 sect
->_raw_size
= note
->descsz
;
5416 sect
->filepos
= note
->descpos
;
5417 sect
->flags
= SEC_HAS_CONTENTS
;
5418 sect
->alignment_power
= 2;
5427 #endif /* HAVE_WIN32_PSTATUS_T */
5430 elfcore_grok_note (abfd
, note
)
5432 Elf_Internal_Note
* note
;
5439 #if defined (HAVE_PRSTATUS_T)
5441 return elfcore_grok_prstatus (abfd
, note
);
5444 #if defined (HAVE_PSTATUS_T)
5446 return elfcore_grok_pstatus (abfd
, note
);
5449 #if defined (HAVE_LWPSTATUS_T)
5451 return elfcore_grok_lwpstatus (abfd
, note
);
5454 case NT_FPREGSET
: /* FIXME: rename to NT_PRFPREG */
5455 return elfcore_grok_prfpreg (abfd
, note
);
5457 #if defined (HAVE_WIN32_PSTATUS_T)
5458 case NT_WIN32PSTATUS
:
5459 return elfcore_grok_win32pstatus (abfd
, note
);
5462 case NT_PRXFPREG
: /* Linux SSE extension */
5463 if (note
->namesz
== 5
5464 && ! strcmp (note
->namedata
, "LINUX"))
5465 return elfcore_grok_prxfpreg (abfd
, note
);
5469 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
5472 return elfcore_grok_psinfo (abfd
, note
);
5479 elfcore_read_notes (abfd
, offset
, size
)
5490 if (bfd_seek (abfd
, offset
, SEEK_SET
) == -1)
5493 buf
= bfd_malloc ((size_t) size
);
5497 if (bfd_read (buf
, size
, 1, abfd
) != size
)
5505 while (p
< buf
+ size
)
5507 /* FIXME: bad alignment assumption. */
5508 Elf_External_Note
* xnp
= (Elf_External_Note
*) p
;
5509 Elf_Internal_Note in
;
5511 in
.type
= bfd_h_get_32 (abfd
, (bfd_byte
*) xnp
->type
);
5513 in
.namesz
= bfd_h_get_32 (abfd
, (bfd_byte
*) xnp
->namesz
);
5514 in
.namedata
= xnp
->name
;
5516 in
.descsz
= bfd_h_get_32 (abfd
, (bfd_byte
*) xnp
->descsz
);
5517 in
.descdata
= in
.namedata
+ BFD_ALIGN (in
.namesz
, 4);
5518 in
.descpos
= offset
+ (in
.descdata
- buf
);
5520 if (! elfcore_grok_note (abfd
, &in
))
5523 p
= in
.descdata
+ BFD_ALIGN (in
.descsz
, 4);
5531 /* FIXME: This function is now unnecessary. Callers can just call
5532 bfd_section_from_phdr directly. */
5535 _bfd_elfcore_section_from_phdr (abfd
, phdr
, sec_num
)
5537 Elf_Internal_Phdr
* phdr
;
5540 if (! bfd_section_from_phdr (abfd
, phdr
, sec_num
))
5548 /* Providing external access to the ELF program header table. */
5550 /* Return an upper bound on the number of bytes required to store a
5551 copy of ABFD's program header table entries. Return -1 if an error
5552 occurs; bfd_get_error will return an appropriate code. */
5554 bfd_get_elf_phdr_upper_bound (abfd
)
5557 if (abfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
5559 bfd_set_error (bfd_error_wrong_format
);
5563 return (elf_elfheader (abfd
)->e_phnum
5564 * sizeof (Elf_Internal_Phdr
));
5568 /* Copy ABFD's program header table entries to *PHDRS. The entries
5569 will be stored as an array of Elf_Internal_Phdr structures, as
5570 defined in include/elf/internal.h. To find out how large the
5571 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
5573 Return the number of program header table entries read, or -1 if an
5574 error occurs; bfd_get_error will return an appropriate code. */
5576 bfd_get_elf_phdrs (abfd
, phdrs
)
5582 if (abfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
5584 bfd_set_error (bfd_error_wrong_format
);
5588 num_phdrs
= elf_elfheader (abfd
)->e_phnum
;
5589 memcpy (phdrs
, elf_tdata (abfd
)->phdr
,
5590 num_phdrs
* sizeof (Elf_Internal_Phdr
));