1 /* ELF executable support for BFD.
2 Copyright 1993, 1994, 1995, 1996 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 int elf_sort_sections
PARAMS ((const PTR
, const PTR
));
44 static boolean assign_file_positions_for_segments
PARAMS ((bfd
*));
45 static boolean assign_file_positions_except_relocs
PARAMS ((bfd
*));
46 static boolean prep_headers
PARAMS ((bfd
*));
47 static boolean swap_out_syms
PARAMS ((bfd
*, struct bfd_strtab_hash
**));
48 static boolean copy_private_bfd_data
PARAMS ((bfd
*, bfd
*));
50 /* Standard ELF hash function. Do not change this function; you will
51 cause invalid hash tables to be generated. (Well, you would if this
52 were being used yet.) */
55 CONST
unsigned char *name
;
61 while ((ch
= *name
++) != '\0')
64 if ((g
= (h
& 0xf0000000)) != 0)
73 /* Read a specified number of bytes at a specified offset in an ELF
74 file, into a newly allocated buffer, and return a pointer to the
78 elf_read (abfd
, offset
, size
)
85 if ((buf
= bfd_alloc (abfd
, size
)) == NULL
)
87 if (bfd_seek (abfd
, offset
, SEEK_SET
) == -1)
89 if (bfd_read ((PTR
) buf
, size
, 1, abfd
) != size
)
91 if (bfd_get_error () != bfd_error_system_call
)
92 bfd_set_error (bfd_error_file_truncated
);
102 /* this just does initialization */
103 /* coff_mkobject zalloc's space for tdata.coff_obj_data ... */
104 elf_tdata (abfd
) = (struct elf_obj_tdata
*)
105 bfd_zalloc (abfd
, sizeof (struct elf_obj_tdata
));
106 if (elf_tdata (abfd
) == 0)
108 /* since everything is done at close time, do we need any
115 bfd_elf_get_str_section (abfd
, shindex
)
117 unsigned int shindex
;
119 Elf_Internal_Shdr
**i_shdrp
;
120 char *shstrtab
= NULL
;
122 unsigned int shstrtabsize
;
124 i_shdrp
= elf_elfsections (abfd
);
125 if (i_shdrp
== 0 || i_shdrp
[shindex
] == 0)
128 shstrtab
= (char *) i_shdrp
[shindex
]->contents
;
129 if (shstrtab
== NULL
)
131 /* No cached one, attempt to read, and cache what we read. */
132 offset
= i_shdrp
[shindex
]->sh_offset
;
133 shstrtabsize
= i_shdrp
[shindex
]->sh_size
;
134 shstrtab
= elf_read (abfd
, offset
, shstrtabsize
);
135 i_shdrp
[shindex
]->contents
= (PTR
) shstrtab
;
141 bfd_elf_string_from_elf_section (abfd
, shindex
, strindex
)
143 unsigned int shindex
;
144 unsigned int strindex
;
146 Elf_Internal_Shdr
*hdr
;
151 hdr
= elf_elfsections (abfd
)[shindex
];
153 if (hdr
->contents
== NULL
154 && bfd_elf_get_str_section (abfd
, shindex
) == NULL
)
157 return ((char *) hdr
->contents
) + strindex
;
160 /* Make a BFD section from an ELF section. We store a pointer to the
161 BFD section in the bfd_section field of the header. */
164 _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
)
166 Elf_Internal_Shdr
*hdr
;
172 if (hdr
->bfd_section
!= NULL
)
174 BFD_ASSERT (strcmp (name
,
175 bfd_get_section_name (abfd
, hdr
->bfd_section
)) == 0);
179 newsect
= bfd_make_section_anyway (abfd
, name
);
183 newsect
->filepos
= hdr
->sh_offset
;
185 if (! bfd_set_section_vma (abfd
, newsect
, hdr
->sh_addr
)
186 || ! bfd_set_section_size (abfd
, newsect
, hdr
->sh_size
)
187 || ! bfd_set_section_alignment (abfd
, newsect
,
188 bfd_log2 (hdr
->sh_addralign
)))
191 flags
= SEC_NO_FLAGS
;
192 if (hdr
->sh_type
!= SHT_NOBITS
)
193 flags
|= SEC_HAS_CONTENTS
;
194 if ((hdr
->sh_flags
& SHF_ALLOC
) != 0)
197 if (hdr
->sh_type
!= SHT_NOBITS
)
200 if ((hdr
->sh_flags
& SHF_WRITE
) == 0)
201 flags
|= SEC_READONLY
;
202 if ((hdr
->sh_flags
& SHF_EXECINSTR
) != 0)
204 else if ((flags
& SEC_LOAD
) != 0)
207 /* The debugging sections appear to be recognized only by name, not
209 if (strncmp (name
, ".debug", sizeof ".debug" - 1) == 0
210 || strncmp (name
, ".line", sizeof ".line" - 1) == 0
211 || strncmp (name
, ".stab", sizeof ".stab" - 1) == 0)
212 flags
|= SEC_DEBUGGING
;
214 if (! bfd_set_section_flags (abfd
, newsect
, flags
))
217 if ((flags
& SEC_ALLOC
) != 0)
219 Elf_Internal_Phdr
*phdr
;
222 /* Look through the phdrs to see if we need to adjust the lma. */
223 phdr
= elf_tdata (abfd
)->phdr
;
224 for (i
= 0; i
< elf_elfheader (abfd
)->e_phnum
; i
++, phdr
++)
226 if (phdr
->p_type
== PT_LOAD
227 && phdr
->p_paddr
!= 0
228 && phdr
->p_vaddr
!= phdr
->p_paddr
229 && phdr
->p_vaddr
<= hdr
->sh_addr
230 && phdr
->p_vaddr
+ phdr
->p_memsz
>= hdr
->sh_addr
+ hdr
->sh_size
)
232 newsect
->lma
+= phdr
->p_paddr
- phdr
->p_vaddr
;
238 hdr
->bfd_section
= newsect
;
239 elf_section_data (newsect
)->this_hdr
= *hdr
;
249 struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name);
252 Helper functions for GDB to locate the string tables.
253 Since BFD hides string tables from callers, GDB needs to use an
254 internal hook to find them. Sun's .stabstr, in particular,
255 isn't even pointed to by the .stab section, so ordinary
256 mechanisms wouldn't work to find it, even if we had some.
259 struct elf_internal_shdr
*
260 bfd_elf_find_section (abfd
, name
)
264 Elf_Internal_Shdr
**i_shdrp
;
269 i_shdrp
= elf_elfsections (abfd
);
272 shstrtab
= bfd_elf_get_str_section (abfd
, elf_elfheader (abfd
)->e_shstrndx
);
273 if (shstrtab
!= NULL
)
275 max
= elf_elfheader (abfd
)->e_shnum
;
276 for (i
= 1; i
< max
; i
++)
277 if (!strcmp (&shstrtab
[i_shdrp
[i
]->sh_name
], name
))
284 const char *const bfd_elf_section_type_names
[] = {
285 "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB",
286 "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE",
287 "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM",
290 /* ELF relocs are against symbols. If we are producing relocateable
291 output, and the reloc is against an external symbol, and nothing
292 has given us any additional addend, the resulting reloc will also
293 be against the same symbol. In such a case, we don't want to
294 change anything about the way the reloc is handled, since it will
295 all be done at final link time. Rather than put special case code
296 into bfd_perform_relocation, all the reloc types use this howto
297 function. It just short circuits the reloc if producing
298 relocateable output against an external symbol. */
301 bfd_reloc_status_type
302 bfd_elf_generic_reloc (abfd
,
310 arelent
*reloc_entry
;
313 asection
*input_section
;
315 char **error_message
;
317 if (output_bfd
!= (bfd
*) NULL
318 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
319 && (! reloc_entry
->howto
->partial_inplace
320 || reloc_entry
->addend
== 0))
322 reloc_entry
->address
+= input_section
->output_offset
;
326 return bfd_reloc_continue
;
329 /* Print out the program headers. */
332 _bfd_elf_print_private_bfd_data (abfd
, farg
)
336 FILE *f
= (FILE *) farg
;
337 Elf_Internal_Phdr
*p
;
339 bfd_byte
*dynbuf
= NULL
;
341 p
= elf_tdata (abfd
)->phdr
;
346 fprintf (f
, "\nProgram Header:\n");
347 c
= elf_elfheader (abfd
)->e_phnum
;
348 for (i
= 0; i
< c
; i
++, p
++)
355 case PT_NULL
: s
= "NULL"; break;
356 case PT_LOAD
: s
= "LOAD"; break;
357 case PT_DYNAMIC
: s
= "DYNAMIC"; break;
358 case PT_INTERP
: s
= "INTERP"; break;
359 case PT_NOTE
: s
= "NOTE"; break;
360 case PT_SHLIB
: s
= "SHLIB"; break;
361 case PT_PHDR
: s
= "PHDR"; break;
362 default: sprintf (buf
, "0x%lx", p
->p_type
); s
= buf
; break;
364 fprintf (f
, "%8s off 0x", s
);
365 fprintf_vma (f
, p
->p_offset
);
366 fprintf (f
, " vaddr 0x");
367 fprintf_vma (f
, p
->p_vaddr
);
368 fprintf (f
, " paddr 0x");
369 fprintf_vma (f
, p
->p_paddr
);
370 fprintf (f
, " align 2**%u\n", bfd_log2 (p
->p_align
));
371 fprintf (f
, " filesz 0x");
372 fprintf_vma (f
, p
->p_filesz
);
373 fprintf (f
, " memsz 0x");
374 fprintf_vma (f
, p
->p_memsz
);
375 fprintf (f
, " flags %c%c%c",
376 (p
->p_flags
& PF_R
) != 0 ? 'r' : '-',
377 (p
->p_flags
& PF_W
) != 0 ? 'w' : '-',
378 (p
->p_flags
& PF_X
) != 0 ? 'x' : '-');
379 if ((p
->p_flags
&~ (PF_R
| PF_W
| PF_X
)) != 0)
380 fprintf (f
, " %lx", p
->p_flags
&~ (PF_R
| PF_W
| PF_X
));
385 s
= bfd_get_section_by_name (abfd
, ".dynamic");
390 bfd_byte
*extdyn
, *extdynend
;
392 void (*swap_dyn_in
) PARAMS ((bfd
*, const PTR
, Elf_Internal_Dyn
*));
394 fprintf (f
, "\nDynamic Section:\n");
396 dynbuf
= (bfd_byte
*) bfd_malloc (s
->_raw_size
);
399 if (! bfd_get_section_contents (abfd
, s
, (PTR
) dynbuf
, (file_ptr
) 0,
403 elfsec
= _bfd_elf_section_from_bfd_section (abfd
, s
);
406 link
= elf_elfsections (abfd
)[elfsec
]->sh_link
;
408 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
409 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
412 extdynend
= extdyn
+ s
->_raw_size
;
413 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
415 Elf_Internal_Dyn dyn
;
420 (*swap_dyn_in
) (abfd
, (PTR
) extdyn
, &dyn
);
422 if (dyn
.d_tag
== DT_NULL
)
429 sprintf (ab
, "0x%lx", (unsigned long) dyn
.d_tag
);
433 case DT_NEEDED
: name
= "NEEDED"; stringp
= true; break;
434 case DT_PLTRELSZ
: name
= "PLTRELSZ"; break;
435 case DT_PLTGOT
: name
= "PLTGOT"; break;
436 case DT_HASH
: name
= "HASH"; break;
437 case DT_STRTAB
: name
= "STRTAB"; break;
438 case DT_SYMTAB
: name
= "SYMTAB"; break;
439 case DT_RELA
: name
= "RELA"; break;
440 case DT_RELASZ
: name
= "RELASZ"; break;
441 case DT_RELAENT
: name
= "RELAENT"; break;
442 case DT_STRSZ
: name
= "STRSZ"; break;
443 case DT_SYMENT
: name
= "SYMENT"; break;
444 case DT_INIT
: name
= "INIT"; break;
445 case DT_FINI
: name
= "FINI"; break;
446 case DT_SONAME
: name
= "SONAME"; stringp
= true; break;
447 case DT_RPATH
: name
= "RPATH"; stringp
= true; break;
448 case DT_SYMBOLIC
: name
= "SYMBOLIC"; break;
449 case DT_REL
: name
= "REL"; break;
450 case DT_RELSZ
: name
= "RELSZ"; break;
451 case DT_RELENT
: name
= "RELENT"; break;
452 case DT_PLTREL
: name
= "PLTREL"; break;
453 case DT_DEBUG
: name
= "DEBUG"; break;
454 case DT_TEXTREL
: name
= "TEXTREL"; break;
455 case DT_JMPREL
: name
= "JMPREL"; break;
458 fprintf (f
, " %-11s ", name
);
460 fprintf (f
, "0x%lx", (unsigned long) dyn
.d_un
.d_val
);
465 string
= bfd_elf_string_from_elf_section (abfd
, link
,
469 fprintf (f
, "%s", string
);
486 /* Display ELF-specific fields of a symbol. */
488 bfd_elf_print_symbol (ignore_abfd
, filep
, symbol
, how
)
492 bfd_print_symbol_type how
;
494 FILE *file
= (FILE *) filep
;
497 case bfd_print_symbol_name
:
498 fprintf (file
, "%s", symbol
->name
);
500 case bfd_print_symbol_more
:
501 fprintf (file
, "elf ");
502 fprintf_vma (file
, symbol
->value
);
503 fprintf (file
, " %lx", (long) symbol
->flags
);
505 case bfd_print_symbol_all
:
507 CONST
char *section_name
;
508 section_name
= symbol
->section
? symbol
->section
->name
: "(*none*)";
509 bfd_print_symbol_vandf ((PTR
) file
, symbol
);
510 fprintf (file
, " %s\t", section_name
);
511 /* Print the "other" value for a symbol. For common symbols,
512 we've already printed the size; now print the alignment.
513 For other symbols, we have no specified alignment, and
514 we've printed the address; now print the size. */
516 (bfd_is_com_section (symbol
->section
)
517 ? ((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_value
518 : ((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_size
));
519 fprintf (file
, " %s", symbol
->name
);
525 /* Create an entry in an ELF linker hash table. */
527 struct bfd_hash_entry
*
528 _bfd_elf_link_hash_newfunc (entry
, table
, string
)
529 struct bfd_hash_entry
*entry
;
530 struct bfd_hash_table
*table
;
533 struct elf_link_hash_entry
*ret
= (struct elf_link_hash_entry
*) entry
;
535 /* Allocate the structure if it has not already been allocated by a
537 if (ret
== (struct elf_link_hash_entry
*) NULL
)
538 ret
= ((struct elf_link_hash_entry
*)
539 bfd_hash_allocate (table
, sizeof (struct elf_link_hash_entry
)));
540 if (ret
== (struct elf_link_hash_entry
*) NULL
)
541 return (struct bfd_hash_entry
*) ret
;
543 /* Call the allocation method of the superclass. */
544 ret
= ((struct elf_link_hash_entry
*)
545 _bfd_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
547 if (ret
!= (struct elf_link_hash_entry
*) NULL
)
549 /* Set local fields. */
553 ret
->dynstr_index
= 0;
555 ret
->got_offset
= (bfd_vma
) -1;
556 ret
->plt_offset
= (bfd_vma
) -1;
557 ret
->linker_section_pointer
= (elf_linker_section_pointers_t
*)0;
558 ret
->type
= STT_NOTYPE
;
559 /* Assume that we have been called by a non-ELF symbol reader.
560 This flag is then reset by the code which reads an ELF input
561 file. This ensures that a symbol created by a non-ELF symbol
562 reader will have the flag set correctly. */
563 ret
->elf_link_hash_flags
= ELF_LINK_NON_ELF
;
566 return (struct bfd_hash_entry
*) ret
;
569 /* Initialize an ELF linker hash table. */
572 _bfd_elf_link_hash_table_init (table
, abfd
, newfunc
)
573 struct elf_link_hash_table
*table
;
575 struct bfd_hash_entry
*(*newfunc
) PARAMS ((struct bfd_hash_entry
*,
576 struct bfd_hash_table
*,
579 table
->dynamic_sections_created
= false;
580 table
->dynobj
= NULL
;
581 /* The first dynamic symbol is a dummy. */
582 table
->dynsymcount
= 1;
583 table
->dynstr
= NULL
;
584 table
->bucketcount
= 0;
585 table
->needed
= NULL
;
587 table
->stab_info
= NULL
;
588 return _bfd_link_hash_table_init (&table
->root
, abfd
, newfunc
);
591 /* Create an ELF linker hash table. */
593 struct bfd_link_hash_table
*
594 _bfd_elf_link_hash_table_create (abfd
)
597 struct elf_link_hash_table
*ret
;
599 ret
= ((struct elf_link_hash_table
*)
600 bfd_alloc (abfd
, sizeof (struct elf_link_hash_table
)));
601 if (ret
== (struct elf_link_hash_table
*) NULL
)
604 if (! _bfd_elf_link_hash_table_init (ret
, abfd
, _bfd_elf_link_hash_newfunc
))
606 bfd_release (abfd
, ret
);
613 /* This is a hook for the ELF emulation code in the generic linker to
614 tell the backend linker what file name to use for the DT_NEEDED
615 entry for a dynamic object. The generic linker passes name as an
616 empty string to indicate that no DT_NEEDED entry should be made. */
619 bfd_elf_set_dt_needed_name (abfd
, name
)
623 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
624 && bfd_get_format (abfd
) == bfd_object
)
625 elf_dt_name (abfd
) = name
;
628 /* Get the list of DT_NEEDED entries for a link. This is a hook for
629 the ELF emulation code. */
631 struct bfd_link_needed_list
*
632 bfd_elf_get_needed_list (abfd
, info
)
634 struct bfd_link_info
*info
;
636 if (info
->hash
->creator
->flavour
!= bfd_target_elf_flavour
)
638 return elf_hash_table (info
)->needed
;
641 /* Get the name actually used for a dynamic object for a link. This
642 is the SONAME entry if there is one. Otherwise, it is the string
643 passed to bfd_elf_set_dt_needed_name, or it is the filename. */
646 bfd_elf_get_dt_soname (abfd
)
649 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
650 && bfd_get_format (abfd
) == bfd_object
)
651 return elf_dt_name (abfd
);
655 /* Allocate an ELF string table--force the first byte to be zero. */
657 struct bfd_strtab_hash
*
658 _bfd_elf_stringtab_init ()
660 struct bfd_strtab_hash
*ret
;
662 ret
= _bfd_stringtab_init ();
667 loc
= _bfd_stringtab_add (ret
, "", true, false);
668 BFD_ASSERT (loc
== 0 || loc
== (bfd_size_type
) -1);
669 if (loc
== (bfd_size_type
) -1)
671 _bfd_stringtab_free (ret
);
678 /* ELF .o/exec file reading */
680 /* Create a new bfd section from an ELF section header. */
683 bfd_section_from_shdr (abfd
, shindex
)
685 unsigned int shindex
;
687 Elf_Internal_Shdr
*hdr
= elf_elfsections (abfd
)[shindex
];
688 Elf_Internal_Ehdr
*ehdr
= elf_elfheader (abfd
);
689 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
692 name
= elf_string_from_elf_strtab (abfd
, hdr
->sh_name
);
694 switch (hdr
->sh_type
)
697 /* Inactive section. Throw it away. */
700 case SHT_PROGBITS
: /* Normal section with contents. */
701 case SHT_DYNAMIC
: /* Dynamic linking information. */
702 case SHT_NOBITS
: /* .bss section. */
703 case SHT_HASH
: /* .hash section. */
704 case SHT_NOTE
: /* .note section. */
705 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
707 case SHT_SYMTAB
: /* A symbol table */
708 if (elf_onesymtab (abfd
) == shindex
)
711 BFD_ASSERT (hdr
->sh_entsize
== bed
->s
->sizeof_sym
);
712 BFD_ASSERT (elf_onesymtab (abfd
) == 0);
713 elf_onesymtab (abfd
) = shindex
;
714 elf_tdata (abfd
)->symtab_hdr
= *hdr
;
715 elf_elfsections (abfd
)[shindex
] = hdr
= &elf_tdata (abfd
)->symtab_hdr
;
716 abfd
->flags
|= HAS_SYMS
;
718 /* Sometimes a shared object will map in the symbol table. If
719 SHF_ALLOC is set, and this is a shared object, then we also
720 treat this section as a BFD section. We can not base the
721 decision purely on SHF_ALLOC, because that flag is sometimes
722 set in a relocateable object file, which would confuse the
724 if ((hdr
->sh_flags
& SHF_ALLOC
) != 0
725 && (abfd
->flags
& DYNAMIC
) != 0
726 && ! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
))
731 case SHT_DYNSYM
: /* A dynamic symbol table */
732 if (elf_dynsymtab (abfd
) == shindex
)
735 BFD_ASSERT (hdr
->sh_entsize
== bed
->s
->sizeof_sym
);
736 BFD_ASSERT (elf_dynsymtab (abfd
) == 0);
737 elf_dynsymtab (abfd
) = shindex
;
738 elf_tdata (abfd
)->dynsymtab_hdr
= *hdr
;
739 elf_elfsections (abfd
)[shindex
] = hdr
= &elf_tdata (abfd
)->dynsymtab_hdr
;
740 abfd
->flags
|= HAS_SYMS
;
742 /* Besides being a symbol table, we also treat this as a regular
743 section, so that objcopy can handle it. */
744 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
746 case SHT_STRTAB
: /* A string table */
747 if (hdr
->bfd_section
!= NULL
)
749 if (ehdr
->e_shstrndx
== shindex
)
751 elf_tdata (abfd
)->shstrtab_hdr
= *hdr
;
752 elf_elfsections (abfd
)[shindex
] = &elf_tdata (abfd
)->shstrtab_hdr
;
758 for (i
= 1; i
< ehdr
->e_shnum
; i
++)
760 Elf_Internal_Shdr
*hdr2
= elf_elfsections (abfd
)[i
];
761 if (hdr2
->sh_link
== shindex
)
763 if (! bfd_section_from_shdr (abfd
, i
))
765 if (elf_onesymtab (abfd
) == i
)
767 elf_tdata (abfd
)->strtab_hdr
= *hdr
;
768 elf_elfsections (abfd
)[shindex
] =
769 &elf_tdata (abfd
)->strtab_hdr
;
772 if (elf_dynsymtab (abfd
) == i
)
774 elf_tdata (abfd
)->dynstrtab_hdr
= *hdr
;
775 elf_elfsections (abfd
)[shindex
] = hdr
=
776 &elf_tdata (abfd
)->dynstrtab_hdr
;
777 /* We also treat this as a regular section, so
778 that objcopy can handle it. */
781 #if 0 /* Not handling other string tables specially right now. */
782 hdr2
= elf_elfsections (abfd
)[i
]; /* in case it moved */
783 /* We have a strtab for some random other section. */
784 newsect
= (asection
*) hdr2
->bfd_section
;
787 hdr
->bfd_section
= newsect
;
788 hdr2
= &elf_section_data (newsect
)->str_hdr
;
790 elf_elfsections (abfd
)[shindex
] = hdr2
;
796 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
800 /* *These* do a lot of work -- but build no sections! */
802 asection
*target_sect
;
803 Elf_Internal_Shdr
*hdr2
;
805 /* For some incomprehensible reason Oracle distributes
806 libraries for Solaris in which some of the objects have
807 bogus sh_link fields. It would be nice if we could just
808 reject them, but, unfortunately, some people need to use
809 them. We scan through the section headers; if we find only
810 one suitable symbol table, we clobber the sh_link to point
811 to it. I hope this doesn't break anything. */
812 if (elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
!= SHT_SYMTAB
813 && elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
!= SHT_DYNSYM
)
819 for (scan
= 1; scan
< ehdr
->e_shnum
; scan
++)
821 if (elf_elfsections (abfd
)[scan
]->sh_type
== SHT_SYMTAB
822 || elf_elfsections (abfd
)[scan
]->sh_type
== SHT_DYNSYM
)
833 hdr
->sh_link
= found
;
836 /* Get the symbol table. */
837 if (elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
== SHT_SYMTAB
838 && ! bfd_section_from_shdr (abfd
, hdr
->sh_link
))
841 /* If this reloc section does not use the main symbol table we
842 don't treat it as a reloc section. BFD can't adequately
843 represent such a section, so at least for now, we don't
844 try. We just present it as a normal section. */
845 if (hdr
->sh_link
!= elf_onesymtab (abfd
))
846 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
848 if (! bfd_section_from_shdr (abfd
, hdr
->sh_info
))
850 target_sect
= bfd_section_from_elf_index (abfd
, hdr
->sh_info
);
851 if (target_sect
== NULL
)
854 if ((target_sect
->flags
& SEC_RELOC
) == 0
855 || target_sect
->reloc_count
== 0)
856 hdr2
= &elf_section_data (target_sect
)->rel_hdr
;
859 BFD_ASSERT (elf_section_data (target_sect
)->rel_hdr2
== NULL
);
860 hdr2
= (Elf_Internal_Shdr
*) bfd_alloc (abfd
, sizeof (*hdr2
));
861 elf_section_data (target_sect
)->rel_hdr2
= hdr2
;
864 elf_elfsections (abfd
)[shindex
] = hdr2
;
865 target_sect
->reloc_count
+= hdr
->sh_size
/ hdr
->sh_entsize
;
866 target_sect
->flags
|= SEC_RELOC
;
867 target_sect
->relocation
= NULL
;
868 target_sect
->rel_filepos
= hdr
->sh_offset
;
869 abfd
->flags
|= HAS_RELOC
;
878 /* Check for any processor-specific section types. */
880 if (bed
->elf_backend_section_from_shdr
)
881 (*bed
->elf_backend_section_from_shdr
) (abfd
, hdr
, name
);
889 /* Given an ELF section number, retrieve the corresponding BFD
893 bfd_section_from_elf_index (abfd
, index
)
897 BFD_ASSERT (index
> 0 && index
< SHN_LORESERVE
);
898 if (index
>= elf_elfheader (abfd
)->e_shnum
)
900 return elf_elfsections (abfd
)[index
]->bfd_section
;
904 _bfd_elf_new_section_hook (abfd
, sec
)
908 struct bfd_elf_section_data
*sdata
;
910 sdata
= (struct bfd_elf_section_data
*) bfd_alloc (abfd
, sizeof (*sdata
));
913 sec
->used_by_bfd
= (PTR
) sdata
;
914 memset (sdata
, 0, sizeof (*sdata
));
918 /* Create a new bfd section from an ELF program header.
920 Since program segments have no names, we generate a synthetic name
921 of the form segment<NUM>, where NUM is generally the index in the
922 program header table. For segments that are split (see below) we
923 generate the names segment<NUM>a and segment<NUM>b.
925 Note that some program segments may have a file size that is different than
926 (less than) the memory size. All this means is that at execution the
927 system must allocate the amount of memory specified by the memory size,
928 but only initialize it with the first "file size" bytes read from the
929 file. This would occur for example, with program segments consisting
930 of combined data+bss.
932 To handle the above situation, this routine generates TWO bfd sections
933 for the single program segment. The first has the length specified by
934 the file size of the segment, and the second has the length specified
935 by the difference between the two sizes. In effect, the segment is split
936 into it's initialized and uninitialized parts.
941 bfd_section_from_phdr (abfd
, hdr
, index
)
943 Elf_Internal_Phdr
*hdr
;
951 split
= ((hdr
->p_memsz
> 0) &&
952 (hdr
->p_filesz
> 0) &&
953 (hdr
->p_memsz
> hdr
->p_filesz
));
954 sprintf (namebuf
, split
? "segment%da" : "segment%d", index
);
955 name
= bfd_alloc (abfd
, strlen (namebuf
) + 1);
958 strcpy (name
, namebuf
);
959 newsect
= bfd_make_section (abfd
, name
);
962 newsect
->vma
= hdr
->p_vaddr
;
963 newsect
->lma
= hdr
->p_paddr
;
964 newsect
->_raw_size
= hdr
->p_filesz
;
965 newsect
->filepos
= hdr
->p_offset
;
966 newsect
->flags
|= SEC_HAS_CONTENTS
;
967 if (hdr
->p_type
== PT_LOAD
)
969 newsect
->flags
|= SEC_ALLOC
;
970 newsect
->flags
|= SEC_LOAD
;
971 if (hdr
->p_flags
& PF_X
)
973 /* FIXME: all we known is that it has execute PERMISSION,
975 newsect
->flags
|= SEC_CODE
;
978 if (!(hdr
->p_flags
& PF_W
))
980 newsect
->flags
|= SEC_READONLY
;
985 sprintf (namebuf
, "segment%db", index
);
986 name
= bfd_alloc (abfd
, strlen (namebuf
) + 1);
989 strcpy (name
, namebuf
);
990 newsect
= bfd_make_section (abfd
, name
);
993 newsect
->vma
= hdr
->p_vaddr
+ hdr
->p_filesz
;
994 newsect
->lma
= hdr
->p_paddr
+ hdr
->p_filesz
;
995 newsect
->_raw_size
= hdr
->p_memsz
- hdr
->p_filesz
;
996 if (hdr
->p_type
== PT_LOAD
)
998 newsect
->flags
|= SEC_ALLOC
;
999 if (hdr
->p_flags
& PF_X
)
1000 newsect
->flags
|= SEC_CODE
;
1002 if (!(hdr
->p_flags
& PF_W
))
1003 newsect
->flags
|= SEC_READONLY
;
1009 /* Set up an ELF internal section header for a section. */
1013 elf_fake_sections (abfd
, asect
, failedptrarg
)
1018 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1019 boolean
*failedptr
= (boolean
*) failedptrarg
;
1020 Elf_Internal_Shdr
*this_hdr
;
1024 /* We already failed; just get out of the bfd_map_over_sections
1029 this_hdr
= &elf_section_data (asect
)->this_hdr
;
1031 this_hdr
->sh_name
= (unsigned long) _bfd_stringtab_add (elf_shstrtab (abfd
),
1034 if (this_hdr
->sh_name
== (unsigned long) -1)
1040 this_hdr
->sh_flags
= 0;
1042 if ((asect
->flags
& SEC_ALLOC
) != 0)
1043 this_hdr
->sh_addr
= asect
->vma
;
1045 this_hdr
->sh_addr
= 0;
1047 this_hdr
->sh_offset
= 0;
1048 this_hdr
->sh_size
= asect
->_raw_size
;
1049 this_hdr
->sh_link
= 0;
1050 this_hdr
->sh_addralign
= 1 << asect
->alignment_power
;
1051 /* The sh_entsize and sh_info fields may have been set already by
1052 copy_private_section_data. */
1054 this_hdr
->bfd_section
= asect
;
1055 this_hdr
->contents
= NULL
;
1057 /* FIXME: This should not be based on section names. */
1058 if (strcmp (asect
->name
, ".dynstr") == 0)
1059 this_hdr
->sh_type
= SHT_STRTAB
;
1060 else if (strcmp (asect
->name
, ".hash") == 0)
1062 this_hdr
->sh_type
= SHT_HASH
;
1063 this_hdr
->sh_entsize
= bed
->s
->arch_size
/ 8;
1065 else if (strcmp (asect
->name
, ".dynsym") == 0)
1067 this_hdr
->sh_type
= SHT_DYNSYM
;
1068 this_hdr
->sh_entsize
= bed
->s
->sizeof_sym
;
1070 else if (strcmp (asect
->name
, ".dynamic") == 0)
1072 this_hdr
->sh_type
= SHT_DYNAMIC
;
1073 this_hdr
->sh_entsize
= bed
->s
->sizeof_dyn
;
1075 else if (strncmp (asect
->name
, ".rela", 5) == 0
1076 && get_elf_backend_data (abfd
)->use_rela_p
)
1078 this_hdr
->sh_type
= SHT_RELA
;
1079 this_hdr
->sh_entsize
= bed
->s
->sizeof_rela
;
1081 else if (strncmp (asect
->name
, ".rel", 4) == 0
1082 && ! get_elf_backend_data (abfd
)->use_rela_p
)
1084 this_hdr
->sh_type
= SHT_REL
;
1085 this_hdr
->sh_entsize
= bed
->s
->sizeof_rel
;
1087 else if (strcmp (asect
->name
, ".note") == 0)
1088 this_hdr
->sh_type
= SHT_NOTE
;
1089 else if (strncmp (asect
->name
, ".stab", 5) == 0
1090 && strcmp (asect
->name
+ strlen (asect
->name
) - 3, "str") == 0)
1091 this_hdr
->sh_type
= SHT_STRTAB
;
1092 else if ((asect
->flags
& SEC_ALLOC
) != 0
1093 && (asect
->flags
& SEC_LOAD
) != 0)
1094 this_hdr
->sh_type
= SHT_PROGBITS
;
1095 else if ((asect
->flags
& SEC_ALLOC
) != 0
1096 && ((asect
->flags
& SEC_LOAD
) == 0))
1097 this_hdr
->sh_type
= SHT_NOBITS
;
1101 this_hdr
->sh_type
= SHT_PROGBITS
;
1104 if ((asect
->flags
& SEC_ALLOC
) != 0)
1105 this_hdr
->sh_flags
|= SHF_ALLOC
;
1106 if ((asect
->flags
& SEC_READONLY
) == 0)
1107 this_hdr
->sh_flags
|= SHF_WRITE
;
1108 if ((asect
->flags
& SEC_CODE
) != 0)
1109 this_hdr
->sh_flags
|= SHF_EXECINSTR
;
1111 /* Check for processor-specific section types. */
1113 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1115 if (bed
->elf_backend_fake_sections
)
1116 (*bed
->elf_backend_fake_sections
) (abfd
, this_hdr
, asect
);
1119 /* If the section has relocs, set up a section header for the
1120 SHT_REL[A] section. */
1121 if ((asect
->flags
& SEC_RELOC
) != 0)
1123 Elf_Internal_Shdr
*rela_hdr
;
1124 int use_rela_p
= get_elf_backend_data (abfd
)->use_rela_p
;
1127 rela_hdr
= &elf_section_data (asect
)->rel_hdr
;
1128 name
= bfd_alloc (abfd
, sizeof ".rela" + strlen (asect
->name
));
1134 sprintf (name
, "%s%s", use_rela_p
? ".rela" : ".rel", asect
->name
);
1136 (unsigned int) _bfd_stringtab_add (elf_shstrtab (abfd
), name
,
1138 if (rela_hdr
->sh_name
== (unsigned int) -1)
1143 rela_hdr
->sh_type
= use_rela_p
? SHT_RELA
: SHT_REL
;
1144 rela_hdr
->sh_entsize
= (use_rela_p
1145 ? bed
->s
->sizeof_rela
1146 : bed
->s
->sizeof_rel
);
1147 rela_hdr
->sh_addralign
= bed
->s
->file_align
;
1148 rela_hdr
->sh_flags
= 0;
1149 rela_hdr
->sh_addr
= 0;
1150 rela_hdr
->sh_size
= 0;
1151 rela_hdr
->sh_offset
= 0;
1155 /* Assign all ELF section numbers. The dummy first section is handled here
1156 too. The link/info pointers for the standard section types are filled
1157 in here too, while we're at it. */
1160 assign_section_numbers (abfd
)
1163 struct elf_obj_tdata
*t
= elf_tdata (abfd
);
1165 unsigned int section_number
;
1166 Elf_Internal_Shdr
**i_shdrp
;
1167 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1171 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
1173 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
1175 d
->this_idx
= section_number
++;
1176 if ((sec
->flags
& SEC_RELOC
) == 0)
1179 d
->rel_idx
= section_number
++;
1182 t
->shstrtab_section
= section_number
++;
1183 elf_elfheader (abfd
)->e_shstrndx
= t
->shstrtab_section
;
1184 t
->shstrtab_hdr
.sh_size
= _bfd_stringtab_size (elf_shstrtab (abfd
));
1186 if (abfd
->symcount
> 0)
1188 t
->symtab_section
= section_number
++;
1189 t
->strtab_section
= section_number
++;
1192 elf_elfheader (abfd
)->e_shnum
= section_number
;
1194 /* Set up the list of section header pointers, in agreement with the
1196 i_shdrp
= ((Elf_Internal_Shdr
**)
1197 bfd_alloc (abfd
, section_number
* sizeof (Elf_Internal_Shdr
*)));
1198 if (i_shdrp
== NULL
)
1201 i_shdrp
[0] = ((Elf_Internal_Shdr
*)
1202 bfd_alloc (abfd
, sizeof (Elf_Internal_Shdr
)));
1203 if (i_shdrp
[0] == NULL
)
1205 bfd_release (abfd
, i_shdrp
);
1208 memset (i_shdrp
[0], 0, sizeof (Elf_Internal_Shdr
));
1210 elf_elfsections (abfd
) = i_shdrp
;
1212 i_shdrp
[t
->shstrtab_section
] = &t
->shstrtab_hdr
;
1213 if (abfd
->symcount
> 0)
1215 i_shdrp
[t
->symtab_section
] = &t
->symtab_hdr
;
1216 i_shdrp
[t
->strtab_section
] = &t
->strtab_hdr
;
1217 t
->symtab_hdr
.sh_link
= t
->strtab_section
;
1219 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
1221 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
1225 i_shdrp
[d
->this_idx
] = &d
->this_hdr
;
1226 if (d
->rel_idx
!= 0)
1227 i_shdrp
[d
->rel_idx
] = &d
->rel_hdr
;
1229 /* Fill in the sh_link and sh_info fields while we're at it. */
1231 /* sh_link of a reloc section is the section index of the symbol
1232 table. sh_info is the section index of the section to which
1233 the relocation entries apply. */
1234 if (d
->rel_idx
!= 0)
1236 d
->rel_hdr
.sh_link
= t
->symtab_section
;
1237 d
->rel_hdr
.sh_info
= d
->this_idx
;
1240 switch (d
->this_hdr
.sh_type
)
1244 /* A reloc section which we are treating as a normal BFD
1245 section. sh_link is the section index of the symbol
1246 table. sh_info is the section index of the section to
1247 which the relocation entries apply. We assume that an
1248 allocated reloc section uses the dynamic symbol table.
1249 FIXME: How can we be sure? */
1250 s
= bfd_get_section_by_name (abfd
, ".dynsym");
1252 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
1254 /* We look up the section the relocs apply to by name. */
1256 if (d
->this_hdr
.sh_type
== SHT_REL
)
1260 s
= bfd_get_section_by_name (abfd
, name
);
1262 d
->this_hdr
.sh_info
= elf_section_data (s
)->this_idx
;
1266 /* We assume that a section named .stab*str is a stabs
1267 string section. We look for a section with the same name
1268 but without the trailing ``str'', and set its sh_link
1269 field to point to this section. */
1270 if (strncmp (sec
->name
, ".stab", sizeof ".stab" - 1) == 0
1271 && strcmp (sec
->name
+ strlen (sec
->name
) - 3, "str") == 0)
1276 len
= strlen (sec
->name
);
1277 alc
= (char *) bfd_malloc (len
- 2);
1280 strncpy (alc
, sec
->name
, len
- 3);
1281 alc
[len
- 3] = '\0';
1282 s
= bfd_get_section_by_name (abfd
, alc
);
1286 elf_section_data (s
)->this_hdr
.sh_link
= d
->this_idx
;
1288 /* This is a .stab section. */
1289 elf_section_data (s
)->this_hdr
.sh_entsize
=
1290 4 + 2 * (bed
->s
->arch_size
/ 8);
1297 /* sh_link is the section header index of the string table
1298 used for the dynamic entries or symbol table. */
1299 s
= bfd_get_section_by_name (abfd
, ".dynstr");
1301 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
1305 /* sh_link is the section header index of the symbol table
1306 this hash table is for. */
1307 s
= bfd_get_section_by_name (abfd
, ".dynsym");
1309 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
1317 /* Map symbol from it's internal number to the external number, moving
1318 all local symbols to be at the head of the list. */
1321 sym_is_global (abfd
, sym
)
1325 /* If the backend has a special mapping, use it. */
1326 if (get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
1327 return ((*get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
1330 return ((sym
->flags
& (BSF_GLOBAL
| BSF_WEAK
)) != 0
1331 || bfd_is_und_section (bfd_get_section (sym
))
1332 || bfd_is_com_section (bfd_get_section (sym
)));
1336 elf_map_symbols (abfd
)
1339 int symcount
= bfd_get_symcount (abfd
);
1340 asymbol
**syms
= bfd_get_outsymbols (abfd
);
1341 asymbol
**sect_syms
;
1343 int num_globals
= 0;
1344 int num_locals2
= 0;
1345 int num_globals2
= 0;
1347 int num_sections
= 0;
1353 fprintf (stderr
, "elf_map_symbols\n");
1357 /* Add a section symbol for each BFD section. FIXME: Is this really
1359 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
1361 if (max_index
< asect
->index
)
1362 max_index
= asect
->index
;
1366 sect_syms
= (asymbol
**) bfd_zalloc (abfd
, max_index
* sizeof (asymbol
*));
1367 if (sect_syms
== NULL
)
1369 elf_section_syms (abfd
) = sect_syms
;
1371 for (idx
= 0; idx
< symcount
; idx
++)
1373 if ((syms
[idx
]->flags
& BSF_SECTION_SYM
) != 0
1374 && (syms
[idx
]->value
+ syms
[idx
]->section
->vma
) == 0)
1378 sec
= syms
[idx
]->section
;
1379 if (sec
->owner
!= NULL
)
1381 if (sec
->owner
!= abfd
)
1383 if (sec
->output_offset
!= 0)
1385 sec
= sec
->output_section
;
1386 BFD_ASSERT (sec
->owner
== abfd
);
1388 sect_syms
[sec
->index
] = syms
[idx
];
1393 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
1397 if (sect_syms
[asect
->index
] != NULL
)
1400 sym
= bfd_make_empty_symbol (abfd
);
1403 sym
->the_bfd
= abfd
;
1404 sym
->name
= asect
->name
;
1406 /* Set the flags to 0 to indicate that this one was newly added. */
1408 sym
->section
= asect
;
1409 sect_syms
[asect
->index
] = sym
;
1413 "creating section symbol, name = %s, value = 0x%.8lx, index = %d, section = 0x%.8lx\n",
1414 asect
->name
, (long) asect
->vma
, asect
->index
, (long) asect
);
1418 /* Classify all of the symbols. */
1419 for (idx
= 0; idx
< symcount
; idx
++)
1421 if (!sym_is_global (abfd
, syms
[idx
]))
1426 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
1428 if (sect_syms
[asect
->index
] != NULL
1429 && sect_syms
[asect
->index
]->flags
== 0)
1431 sect_syms
[asect
->index
]->flags
= BSF_SECTION_SYM
;
1432 if (!sym_is_global (abfd
, sect_syms
[asect
->index
]))
1436 sect_syms
[asect
->index
]->flags
= 0;
1440 /* Now sort the symbols so the local symbols are first. */
1441 new_syms
= ((asymbol
**)
1443 (num_locals
+ num_globals
) * sizeof (asymbol
*)));
1444 if (new_syms
== NULL
)
1447 for (idx
= 0; idx
< symcount
; idx
++)
1449 asymbol
*sym
= syms
[idx
];
1452 if (!sym_is_global (abfd
, sym
))
1455 i
= num_locals
+ num_globals2
++;
1457 sym
->udata
.i
= i
+ 1;
1459 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
1461 if (sect_syms
[asect
->index
] != NULL
1462 && sect_syms
[asect
->index
]->flags
== 0)
1464 asymbol
*sym
= sect_syms
[asect
->index
];
1467 sym
->flags
= BSF_SECTION_SYM
;
1468 if (!sym_is_global (abfd
, sym
))
1471 i
= num_locals
+ num_globals2
++;
1473 sym
->udata
.i
= i
+ 1;
1477 bfd_set_symtab (abfd
, new_syms
, num_locals
+ num_globals
);
1479 elf_num_locals (abfd
) = num_locals
;
1480 elf_num_globals (abfd
) = num_globals
;
1484 /* Align to the maximum file alignment that could be required for any
1485 ELF data structure. */
1487 static INLINE file_ptr align_file_position
PARAMS ((file_ptr
, int));
1488 static INLINE file_ptr
1489 align_file_position (off
, align
)
1493 return (off
+ align
- 1) & ~(align
- 1);
1496 /* Assign a file position to a section, optionally aligning to the
1497 required section alignment. */
1500 _bfd_elf_assign_file_position_for_section (i_shdrp
, offset
, align
)
1501 Elf_Internal_Shdr
*i_shdrp
;
1509 al
= i_shdrp
->sh_addralign
;
1511 offset
= BFD_ALIGN (offset
, al
);
1513 i_shdrp
->sh_offset
= offset
;
1514 if (i_shdrp
->bfd_section
!= NULL
)
1515 i_shdrp
->bfd_section
->filepos
= offset
;
1516 if (i_shdrp
->sh_type
!= SHT_NOBITS
)
1517 offset
+= i_shdrp
->sh_size
;
1521 /* Compute the file positions we are going to put the sections at, and
1522 otherwise prepare to begin writing out the ELF file. If LINK_INFO
1523 is not NULL, this is being called by the ELF backend linker. */
1526 _bfd_elf_compute_section_file_positions (abfd
, link_info
)
1528 struct bfd_link_info
*link_info
;
1530 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1532 struct bfd_strtab_hash
*strtab
;
1533 Elf_Internal_Shdr
*shstrtab_hdr
;
1535 if (abfd
->output_has_begun
)
1538 /* Do any elf backend specific processing first. */
1539 if (bed
->elf_backend_begin_write_processing
)
1540 (*bed
->elf_backend_begin_write_processing
) (abfd
, link_info
);
1542 if (! prep_headers (abfd
))
1546 bfd_map_over_sections (abfd
, elf_fake_sections
, &failed
);
1550 if (!assign_section_numbers (abfd
))
1553 /* The backend linker builds symbol table information itself. */
1554 if (link_info
== NULL
&& abfd
->symcount
> 0)
1556 if (! swap_out_syms (abfd
, &strtab
))
1560 shstrtab_hdr
= &elf_tdata (abfd
)->shstrtab_hdr
;
1561 /* sh_name was set in prep_headers. */
1562 shstrtab_hdr
->sh_type
= SHT_STRTAB
;
1563 shstrtab_hdr
->sh_flags
= 0;
1564 shstrtab_hdr
->sh_addr
= 0;
1565 shstrtab_hdr
->sh_size
= _bfd_stringtab_size (elf_shstrtab (abfd
));
1566 shstrtab_hdr
->sh_entsize
= 0;
1567 shstrtab_hdr
->sh_link
= 0;
1568 shstrtab_hdr
->sh_info
= 0;
1569 /* sh_offset is set in assign_file_positions_except_relocs. */
1570 shstrtab_hdr
->sh_addralign
= 1;
1572 if (!assign_file_positions_except_relocs (abfd
))
1575 if (link_info
== NULL
&& abfd
->symcount
> 0)
1578 Elf_Internal_Shdr
*hdr
;
1580 off
= elf_tdata (abfd
)->next_file_pos
;
1582 hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1583 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
1585 hdr
= &elf_tdata (abfd
)->strtab_hdr
;
1586 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
1588 elf_tdata (abfd
)->next_file_pos
= off
;
1590 /* Now that we know where the .strtab section goes, write it
1592 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
1593 || ! _bfd_stringtab_emit (abfd
, strtab
))
1595 _bfd_stringtab_free (strtab
);
1598 abfd
->output_has_begun
= true;
1603 /* Create a mapping from a set of sections to a program segment. */
1605 static INLINE
struct elf_segment_map
*
1606 make_mapping (abfd
, sections
, from
, to
, phdr
)
1608 asection
**sections
;
1613 struct elf_segment_map
*m
;
1617 m
= ((struct elf_segment_map
*)
1619 (sizeof (struct elf_segment_map
)
1620 + (to
- from
- 1) * sizeof (asection
*))));
1624 m
->p_type
= PT_LOAD
;
1625 for (i
= from
, hdrpp
= sections
+ from
; i
< to
; i
++, hdrpp
++)
1626 m
->sections
[i
- from
] = *hdrpp
;
1627 m
->count
= to
- from
;
1629 if (from
== 0 && phdr
)
1631 /* Include the headers in the first PT_LOAD segment. */
1632 m
->includes_filehdr
= 1;
1633 m
->includes_phdrs
= 1;
1639 /* Set up a mapping from BFD sections to program segments. */
1642 map_sections_to_segments (abfd
)
1645 asection
**sections
= NULL
;
1649 struct elf_segment_map
*mfirst
;
1650 struct elf_segment_map
**pm
;
1651 struct elf_segment_map
*m
;
1653 unsigned int phdr_index
;
1654 bfd_vma maxpagesize
;
1656 boolean phdr_in_section
= true;
1660 if (elf_tdata (abfd
)->segment_map
!= NULL
)
1663 if (bfd_count_sections (abfd
) == 0)
1666 /* Select the allocated sections, and sort them. */
1668 sections
= (asection
**) bfd_malloc (bfd_count_sections (abfd
)
1669 * sizeof (asection
*));
1670 if (sections
== NULL
)
1674 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
1676 if ((s
->flags
& SEC_ALLOC
) != 0)
1682 BFD_ASSERT (i
<= bfd_count_sections (abfd
));
1685 qsort (sections
, (size_t) count
, sizeof (asection
*), elf_sort_sections
);
1687 /* Build the mapping. */
1692 /* If we have a .interp section, then create a PT_PHDR segment for
1693 the program headers and a PT_INTERP segment for the .interp
1695 s
= bfd_get_section_by_name (abfd
, ".interp");
1696 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
1698 m
= ((struct elf_segment_map
*)
1699 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
)));
1703 m
->p_type
= PT_PHDR
;
1704 /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */
1705 m
->p_flags
= PF_R
| PF_X
;
1706 m
->p_flags_valid
= 1;
1707 m
->includes_phdrs
= 1;
1712 m
= ((struct elf_segment_map
*)
1713 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
)));
1717 m
->p_type
= PT_INTERP
;
1725 /* Look through the sections. We put sections in the same program
1726 segment when the start of the second section can be placed within
1727 a few bytes of the end of the first section. */
1730 maxpagesize
= get_elf_backend_data (abfd
)->maxpagesize
;
1732 dynsec
= bfd_get_section_by_name (abfd
, ".dynamic");
1734 && (dynsec
->flags
& SEC_LOAD
) == 0)
1737 /* Deal with -Ttext or something similar such that the
1738 first section is not adjacent to the program headers. */
1740 && ((sections
[0]->lma
% maxpagesize
) <
1741 (elf_tdata (abfd
)->program_header_size
% maxpagesize
)))
1742 phdr_in_section
= false;
1744 for (i
= 0, hdrpp
= sections
; i
< count
; i
++, hdrpp
++)
1750 /* See if this section and the last one will fit in the same
1751 segment. Don't put a loadable section after a non-loadable
1752 section. If we are building a dynamic executable, don't put
1753 a writable section in a read only segment (we don't do this
1754 for a non-dynamic executable because some people prefer to
1755 have only one program segment; anybody can use PHDRS in their
1756 linker script to control what happens anyhow). */
1757 if (last_hdr
== NULL
1758 || ((BFD_ALIGN (last_hdr
->lma
+ last_hdr
->_raw_size
, maxpagesize
)
1760 && ((last_hdr
->flags
& SEC_LOAD
) != 0
1761 || (hdr
->flags
& SEC_LOAD
) == 0)
1764 || (hdr
->flags
& SEC_READONLY
) != 0)))
1770 /* This section won't fit in the program segment. We must
1771 create a new program header holding all the sections from
1772 phdr_index until hdr. */
1774 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_section
);
1781 if ((hdr
->flags
& SEC_READONLY
) == 0)
1786 phdr_in_section
= false;
1789 /* Create a final PT_LOAD program segment. */
1790 if (last_hdr
!= NULL
)
1792 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_section
);
1800 /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */
1803 m
= ((struct elf_segment_map
*)
1804 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
)));
1808 m
->p_type
= PT_DYNAMIC
;
1810 m
->sections
[0] = dynsec
;
1819 elf_tdata (abfd
)->segment_map
= mfirst
;
1823 if (sections
!= NULL
)
1828 /* Sort sections by VMA. */
1831 elf_sort_sections (arg1
, arg2
)
1835 const asection
*sec1
= *(const asection
**) arg1
;
1836 const asection
*sec2
= *(const asection
**) arg2
;
1838 if (sec1
->vma
< sec2
->vma
)
1840 else if (sec1
->vma
> sec2
->vma
)
1843 /* Put !SEC_LOAD sections after SEC_LOAD ones. */
1845 #define TOEND(x) (((x)->flags & SEC_LOAD) == 0)
1849 return sec1
->target_index
- sec2
->target_index
;
1858 /* Sort by size, to put zero sized sections before others at the
1861 if (sec1
->_raw_size
< sec2
->_raw_size
)
1863 if (sec1
->_raw_size
> sec2
->_raw_size
)
1866 return sec1
->target_index
- sec2
->target_index
;
1869 /* Assign file positions to the sections based on the mapping from
1870 sections to segments. This function also sets up some fields in
1871 the file header, and writes out the program headers. */
1874 assign_file_positions_for_segments (abfd
)
1877 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1879 struct elf_segment_map
*m
;
1881 Elf_Internal_Phdr
*phdrs
;
1883 bfd_vma filehdr_vaddr
, filehdr_paddr
;
1884 bfd_vma phdrs_vaddr
, phdrs_paddr
;
1885 Elf_Internal_Phdr
*p
;
1887 if (elf_tdata (abfd
)->segment_map
== NULL
)
1889 if (! map_sections_to_segments (abfd
))
1893 if (bed
->elf_backend_modify_segment_map
)
1895 if (! (*bed
->elf_backend_modify_segment_map
) (abfd
))
1900 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
1903 elf_elfheader (abfd
)->e_phoff
= bed
->s
->sizeof_ehdr
;
1904 elf_elfheader (abfd
)->e_phentsize
= bed
->s
->sizeof_phdr
;
1905 elf_elfheader (abfd
)->e_phnum
= count
;
1910 /* If we already counted the number of program segments, make sure
1911 that we allocated enough space. This happens when SIZEOF_HEADERS
1912 is used in a linker script. */
1913 alloc
= elf_tdata (abfd
)->program_header_size
/ bed
->s
->sizeof_phdr
;
1914 if (alloc
!= 0 && count
> alloc
)
1916 ((*_bfd_error_handler
)
1917 ("%s: Not enough room for program headers (allocated %u, need %u)",
1918 bfd_get_filename (abfd
), alloc
, count
));
1919 bfd_set_error (bfd_error_bad_value
);
1926 phdrs
= ((Elf_Internal_Phdr
*)
1927 bfd_alloc (abfd
, alloc
* sizeof (Elf_Internal_Phdr
)));
1931 off
= bed
->s
->sizeof_ehdr
;
1932 off
+= alloc
* bed
->s
->sizeof_phdr
;
1938 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
1945 /* If elf_segment_map is not from map_sections_to_segments, the
1946 sections may not be correctly ordered. */
1948 qsort (m
->sections
, (size_t) m
->count
, sizeof (asection
*),
1951 p
->p_type
= m
->p_type
;
1953 if (m
->p_flags_valid
)
1954 p
->p_flags
= m
->p_flags
;
1958 if (p
->p_type
== PT_LOAD
1960 && (m
->sections
[0]->flags
& SEC_LOAD
) != 0)
1961 off
+= (m
->sections
[0]->vma
- off
) % bed
->maxpagesize
;
1966 p
->p_vaddr
= m
->sections
[0]->vma
;
1968 if (m
->p_paddr_valid
)
1969 p
->p_paddr
= m
->p_paddr
;
1970 else if (m
->count
== 0)
1973 p
->p_paddr
= m
->sections
[0]->lma
;
1975 if (p
->p_type
== PT_LOAD
)
1976 p
->p_align
= bed
->maxpagesize
;
1977 else if (m
->count
== 0)
1978 p
->p_align
= bed
->s
->file_align
;
1986 if (m
->includes_filehdr
)
1988 if (! m
->p_flags_valid
)
1991 p
->p_filesz
= bed
->s
->sizeof_ehdr
;
1992 p
->p_memsz
= bed
->s
->sizeof_ehdr
;
1995 BFD_ASSERT (p
->p_type
== PT_LOAD
);
1997 if (! m
->p_paddr_valid
)
2000 if (p
->p_type
== PT_LOAD
)
2002 filehdr_vaddr
= p
->p_vaddr
;
2003 filehdr_paddr
= p
->p_paddr
;
2007 if (m
->includes_phdrs
)
2009 if (! m
->p_flags_valid
)
2011 if (m
->includes_filehdr
)
2013 if (p
->p_type
== PT_LOAD
)
2015 phdrs_vaddr
= p
->p_vaddr
+ bed
->s
->sizeof_ehdr
;
2016 phdrs_paddr
= p
->p_paddr
+ bed
->s
->sizeof_ehdr
;
2021 p
->p_offset
= bed
->s
->sizeof_ehdr
;
2024 BFD_ASSERT (p
->p_type
== PT_LOAD
);
2025 p
->p_vaddr
-= off
- p
->p_offset
;
2026 if (! m
->p_paddr_valid
)
2027 p
->p_paddr
-= off
- p
->p_offset
;
2029 if (p
->p_type
== PT_LOAD
)
2031 phdrs_vaddr
= p
->p_vaddr
;
2032 phdrs_paddr
= p
->p_paddr
;
2035 p
->p_filesz
+= alloc
* bed
->s
->sizeof_phdr
;
2036 p
->p_memsz
+= alloc
* bed
->s
->sizeof_phdr
;
2039 if (p
->p_type
== PT_LOAD
)
2041 if (! m
->includes_filehdr
&& ! m
->includes_phdrs
)
2047 adjust
= off
- (p
->p_offset
+ p
->p_filesz
);
2048 p
->p_filesz
+= adjust
;
2049 p
->p_memsz
+= adjust
;
2053 for (i
= 0, secpp
= m
->sections
; i
< m
->count
; i
++, secpp
++)
2057 bfd_size_type align
;
2062 if (p
->p_type
== PT_LOAD
)
2066 /* The section VMA must equal the file position modulo
2068 if ((flags
& SEC_ALLOC
) != 0)
2070 adjust
= (sec
->vma
- off
) % bed
->maxpagesize
;
2075 p
->p_memsz
+= adjust
;
2077 if ((flags
& SEC_LOAD
) != 0)
2078 p
->p_filesz
+= adjust
;
2084 if ((flags
& SEC_LOAD
) != 0)
2085 off
+= sec
->_raw_size
;
2088 p
->p_memsz
+= sec
->_raw_size
;
2090 if ((flags
& SEC_LOAD
) != 0)
2091 p
->p_filesz
+= sec
->_raw_size
;
2093 align
= 1 << bfd_get_section_alignment (abfd
, sec
);
2094 if (align
> p
->p_align
)
2097 if (! m
->p_flags_valid
)
2100 if ((flags
& SEC_CODE
) != 0)
2102 if ((flags
& SEC_READONLY
) == 0)
2108 /* Now that we have set the section file positions, we can set up
2109 the file positions for the non PT_LOAD segments. */
2110 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
2114 if (p
->p_type
!= PT_LOAD
&& m
->count
> 0)
2116 BFD_ASSERT (! m
->includes_filehdr
&& ! m
->includes_phdrs
);
2117 p
->p_offset
= m
->sections
[0]->filepos
;
2121 if (m
->includes_filehdr
)
2123 p
->p_vaddr
= filehdr_vaddr
;
2124 if (! m
->p_paddr_valid
)
2125 p
->p_paddr
= filehdr_paddr
;
2127 else if (m
->includes_phdrs
)
2129 p
->p_vaddr
= phdrs_vaddr
;
2130 if (! m
->p_paddr_valid
)
2131 p
->p_paddr
= phdrs_paddr
;
2136 /* Clear out any program headers we allocated but did not use. */
2137 for (; count
< alloc
; count
++, p
++)
2139 memset (p
, 0, sizeof *p
);
2140 p
->p_type
= PT_NULL
;
2143 elf_tdata (abfd
)->phdr
= phdrs
;
2145 elf_tdata (abfd
)->next_file_pos
= off
;
2147 /* Write out the program headers. */
2148 if (bfd_seek (abfd
, bed
->s
->sizeof_ehdr
, SEEK_SET
) != 0
2149 || bed
->s
->write_out_phdrs (abfd
, phdrs
, alloc
) != 0)
2155 /* Get the size of the program header.
2157 If this is called by the linker before any of the section VMA's are set, it
2158 can't calculate the correct value for a strange memory layout. This only
2159 happens when SIZEOF_HEADERS is used in a linker script. In this case,
2160 SORTED_HDRS is NULL and we assume the normal scenario of one text and one
2161 data segment (exclusive of .interp and .dynamic).
2163 ??? User written scripts must either not use SIZEOF_HEADERS, or assume there
2164 will be two segments. */
2166 static bfd_size_type
2167 get_program_header_size (abfd
)
2172 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2174 /* We can't return a different result each time we're called. */
2175 if (elf_tdata (abfd
)->program_header_size
!= 0)
2176 return elf_tdata (abfd
)->program_header_size
;
2178 if (elf_tdata (abfd
)->segment_map
!= NULL
)
2180 struct elf_segment_map
*m
;
2183 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
2185 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
2186 return elf_tdata (abfd
)->program_header_size
;
2189 /* Assume we will need exactly two PT_LOAD segments: one for text
2190 and one for data. */
2193 s
= bfd_get_section_by_name (abfd
, ".interp");
2194 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
2196 /* If we have a loadable interpreter section, we need a
2197 PT_INTERP segment. In this case, assume we also need a
2198 PT_PHDR segment, although that may not be true for all
2203 if (bfd_get_section_by_name (abfd
, ".dynamic") != NULL
)
2205 /* We need a PT_DYNAMIC segment. */
2209 /* Let the backend count up any program headers it might need. */
2210 if (bed
->elf_backend_additional_program_headers
)
2214 a
= (*bed
->elf_backend_additional_program_headers
) (abfd
);
2220 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
2221 return elf_tdata (abfd
)->program_header_size
;
2224 /* Work out the file positions of all the sections. This is called by
2225 _bfd_elf_compute_section_file_positions. All the section sizes and
2226 VMAs must be known before this is called.
2228 We do not consider reloc sections at this point, unless they form
2229 part of the loadable image. Reloc sections are assigned file
2230 positions in assign_file_positions_for_relocs, which is called by
2231 write_object_contents and final_link.
2233 We also don't set the positions of the .symtab and .strtab here. */
2236 assign_file_positions_except_relocs (abfd
)
2239 struct elf_obj_tdata
* const tdata
= elf_tdata (abfd
);
2240 Elf_Internal_Ehdr
* const i_ehdrp
= elf_elfheader (abfd
);
2241 Elf_Internal_Shdr
** const i_shdrpp
= elf_elfsections (abfd
);
2243 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2245 if ((abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0)
2247 Elf_Internal_Shdr
**hdrpp
;
2250 /* Start after the ELF header. */
2251 off
= i_ehdrp
->e_ehsize
;
2253 /* We are not creating an executable, which means that we are
2254 not creating a program header, and that the actual order of
2255 the sections in the file is unimportant. */
2256 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< i_ehdrp
->e_shnum
; i
++, hdrpp
++)
2258 Elf_Internal_Shdr
*hdr
;
2261 if (hdr
->sh_type
== SHT_REL
|| hdr
->sh_type
== SHT_RELA
)
2263 hdr
->sh_offset
= -1;
2266 if (i
== tdata
->symtab_section
2267 || i
== tdata
->strtab_section
)
2269 hdr
->sh_offset
= -1;
2273 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
2279 Elf_Internal_Shdr
**hdrpp
;
2281 /* Assign file positions for the loaded sections based on the
2282 assignment of sections to segments. */
2283 if (! assign_file_positions_for_segments (abfd
))
2286 /* Assign file positions for the other sections. */
2288 off
= elf_tdata (abfd
)->next_file_pos
;
2289 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< i_ehdrp
->e_shnum
; i
++, hdrpp
++)
2291 Elf_Internal_Shdr
*hdr
;
2294 if (hdr
->bfd_section
!= NULL
2295 && hdr
->bfd_section
->filepos
!= 0)
2296 hdr
->sh_offset
= hdr
->bfd_section
->filepos
;
2297 else if ((hdr
->sh_flags
& SHF_ALLOC
) != 0)
2299 ((*_bfd_error_handler
)
2300 ("%s: warning: allocated section `%s' not in segment",
2301 bfd_get_filename (abfd
),
2302 (hdr
->bfd_section
== NULL
2304 : hdr
->bfd_section
->name
)));
2305 off
+= (hdr
->sh_addr
- off
) % bed
->maxpagesize
;
2306 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
,
2309 else if (hdr
->sh_type
== SHT_REL
2310 || hdr
->sh_type
== SHT_RELA
2311 || hdr
== i_shdrpp
[tdata
->symtab_section
]
2312 || hdr
== i_shdrpp
[tdata
->strtab_section
])
2313 hdr
->sh_offset
= -1;
2315 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
2319 /* Place the section headers. */
2320 off
= align_file_position (off
, bed
->s
->file_align
);
2321 i_ehdrp
->e_shoff
= off
;
2322 off
+= i_ehdrp
->e_shnum
* i_ehdrp
->e_shentsize
;
2324 elf_tdata (abfd
)->next_file_pos
= off
;
2333 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
2334 Elf_Internal_Phdr
*i_phdrp
= 0; /* Program header table, internal form */
2335 Elf_Internal_Shdr
**i_shdrp
; /* Section header table, internal form */
2337 struct bfd_strtab_hash
*shstrtab
;
2338 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2340 i_ehdrp
= elf_elfheader (abfd
);
2341 i_shdrp
= elf_elfsections (abfd
);
2343 shstrtab
= _bfd_elf_stringtab_init ();
2344 if (shstrtab
== NULL
)
2347 elf_shstrtab (abfd
) = shstrtab
;
2349 i_ehdrp
->e_ident
[EI_MAG0
] = ELFMAG0
;
2350 i_ehdrp
->e_ident
[EI_MAG1
] = ELFMAG1
;
2351 i_ehdrp
->e_ident
[EI_MAG2
] = ELFMAG2
;
2352 i_ehdrp
->e_ident
[EI_MAG3
] = ELFMAG3
;
2354 i_ehdrp
->e_ident
[EI_CLASS
] = bed
->s
->elfclass
;
2355 i_ehdrp
->e_ident
[EI_DATA
] =
2356 bfd_big_endian (abfd
) ? ELFDATA2MSB
: ELFDATA2LSB
;
2357 i_ehdrp
->e_ident
[EI_VERSION
] = bed
->s
->ev_current
;
2359 for (count
= EI_PAD
; count
< EI_NIDENT
; count
++)
2360 i_ehdrp
->e_ident
[count
] = 0;
2362 if ((abfd
->flags
& DYNAMIC
) != 0)
2363 i_ehdrp
->e_type
= ET_DYN
;
2364 else if ((abfd
->flags
& EXEC_P
) != 0)
2365 i_ehdrp
->e_type
= ET_EXEC
;
2367 i_ehdrp
->e_type
= ET_REL
;
2369 switch (bfd_get_arch (abfd
))
2371 case bfd_arch_unknown
:
2372 i_ehdrp
->e_machine
= EM_NONE
;
2374 case bfd_arch_sparc
:
2375 if (bed
->s
->arch_size
== 64)
2376 i_ehdrp
->e_machine
= EM_SPARC64
;
2378 i_ehdrp
->e_machine
= EM_SPARC
;
2381 i_ehdrp
->e_machine
= EM_386
;
2384 i_ehdrp
->e_machine
= EM_68K
;
2387 i_ehdrp
->e_machine
= EM_88K
;
2390 i_ehdrp
->e_machine
= EM_860
;
2392 case bfd_arch_mips
: /* MIPS Rxxxx */
2393 i_ehdrp
->e_machine
= EM_MIPS
; /* only MIPS R3000 */
2396 i_ehdrp
->e_machine
= EM_PARISC
;
2398 case bfd_arch_powerpc
:
2399 i_ehdrp
->e_machine
= EM_PPC
;
2401 /* start-sanitize-arc */
2403 i_ehdrp
->e_machine
= EM_CYGNUS_ARC
;
2405 /* end-sanitize-arc */
2406 /* also note that EM_M32, AT&T WE32100 is unknown to bfd */
2408 i_ehdrp
->e_machine
= EM_NONE
;
2410 i_ehdrp
->e_version
= bed
->s
->ev_current
;
2411 i_ehdrp
->e_ehsize
= bed
->s
->sizeof_ehdr
;
2413 /* no program header, for now. */
2414 i_ehdrp
->e_phoff
= 0;
2415 i_ehdrp
->e_phentsize
= 0;
2416 i_ehdrp
->e_phnum
= 0;
2418 /* each bfd section is section header entry */
2419 i_ehdrp
->e_entry
= bfd_get_start_address (abfd
);
2420 i_ehdrp
->e_shentsize
= bed
->s
->sizeof_shdr
;
2422 /* if we're building an executable, we'll need a program header table */
2423 if (abfd
->flags
& EXEC_P
)
2425 /* it all happens later */
2427 i_ehdrp
->e_phentsize
= sizeof (Elf_External_Phdr
);
2429 /* elf_build_phdrs() returns a (NULL-terminated) array of
2430 Elf_Internal_Phdrs */
2431 i_phdrp
= elf_build_phdrs (abfd
, i_ehdrp
, i_shdrp
, &i_ehdrp
->e_phnum
);
2432 i_ehdrp
->e_phoff
= outbase
;
2433 outbase
+= i_ehdrp
->e_phentsize
* i_ehdrp
->e_phnum
;
2438 i_ehdrp
->e_phentsize
= 0;
2440 i_ehdrp
->e_phoff
= 0;
2443 elf_tdata (abfd
)->symtab_hdr
.sh_name
=
2444 (unsigned int) _bfd_stringtab_add (shstrtab
, ".symtab", true, false);
2445 elf_tdata (abfd
)->strtab_hdr
.sh_name
=
2446 (unsigned int) _bfd_stringtab_add (shstrtab
, ".strtab", true, false);
2447 elf_tdata (abfd
)->shstrtab_hdr
.sh_name
=
2448 (unsigned int) _bfd_stringtab_add (shstrtab
, ".shstrtab", true, false);
2449 if (elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
2450 || elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
2451 || elf_tdata (abfd
)->shstrtab_hdr
.sh_name
== (unsigned int) -1)
2457 /* Assign file positions for all the reloc sections which are not part
2458 of the loadable file image. */
2461 _bfd_elf_assign_file_positions_for_relocs (abfd
)
2466 Elf_Internal_Shdr
**shdrpp
;
2468 off
= elf_tdata (abfd
)->next_file_pos
;
2470 for (i
= 1, shdrpp
= elf_elfsections (abfd
) + 1;
2471 i
< elf_elfheader (abfd
)->e_shnum
;
2474 Elf_Internal_Shdr
*shdrp
;
2477 if ((shdrp
->sh_type
== SHT_REL
|| shdrp
->sh_type
== SHT_RELA
)
2478 && shdrp
->sh_offset
== -1)
2479 off
= _bfd_elf_assign_file_position_for_section (shdrp
, off
, true);
2482 elf_tdata (abfd
)->next_file_pos
= off
;
2486 _bfd_elf_write_object_contents (abfd
)
2489 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2490 Elf_Internal_Ehdr
*i_ehdrp
;
2491 Elf_Internal_Shdr
**i_shdrp
;
2495 if (! abfd
->output_has_begun
2496 && ! _bfd_elf_compute_section_file_positions (abfd
,
2497 (struct bfd_link_info
*) NULL
))
2500 i_shdrp
= elf_elfsections (abfd
);
2501 i_ehdrp
= elf_elfheader (abfd
);
2504 bfd_map_over_sections (abfd
, bed
->s
->write_relocs
, &failed
);
2507 _bfd_elf_assign_file_positions_for_relocs (abfd
);
2509 /* After writing the headers, we need to write the sections too... */
2510 for (count
= 1; count
< i_ehdrp
->e_shnum
; count
++)
2512 if (bed
->elf_backend_section_processing
)
2513 (*bed
->elf_backend_section_processing
) (abfd
, i_shdrp
[count
]);
2514 if (i_shdrp
[count
]->contents
)
2516 if (bfd_seek (abfd
, i_shdrp
[count
]->sh_offset
, SEEK_SET
) != 0
2517 || (bfd_write (i_shdrp
[count
]->contents
, i_shdrp
[count
]->sh_size
,
2519 != i_shdrp
[count
]->sh_size
))
2524 /* Write out the section header names. */
2525 if (bfd_seek (abfd
, elf_tdata (abfd
)->shstrtab_hdr
.sh_offset
, SEEK_SET
) != 0
2526 || ! _bfd_stringtab_emit (abfd
, elf_shstrtab (abfd
)))
2529 if (bed
->elf_backend_final_write_processing
)
2530 (*bed
->elf_backend_final_write_processing
) (abfd
,
2531 elf_tdata (abfd
)->linker
);
2533 return bed
->s
->write_shdrs_and_ehdr (abfd
);
2536 /* given a section, search the header to find them... */
2538 _bfd_elf_section_from_bfd_section (abfd
, asect
)
2542 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2543 Elf_Internal_Shdr
**i_shdrp
= elf_elfsections (abfd
);
2545 Elf_Internal_Shdr
*hdr
;
2546 int maxindex
= elf_elfheader (abfd
)->e_shnum
;
2548 for (index
= 0; index
< maxindex
; index
++)
2550 hdr
= i_shdrp
[index
];
2551 if (hdr
->bfd_section
== asect
)
2555 if (bed
->elf_backend_section_from_bfd_section
)
2557 for (index
= 0; index
< maxindex
; index
++)
2561 hdr
= i_shdrp
[index
];
2563 if ((*bed
->elf_backend_section_from_bfd_section
)
2564 (abfd
, hdr
, asect
, &retval
))
2569 if (bfd_is_abs_section (asect
))
2571 if (bfd_is_com_section (asect
))
2573 if (bfd_is_und_section (asect
))
2579 /* Given a BFD symbol, return the index in the ELF symbol table, or -1
2583 _bfd_elf_symbol_from_bfd_symbol (abfd
, asym_ptr_ptr
)
2585 struct symbol_cache_entry
**asym_ptr_ptr
;
2587 struct symbol_cache_entry
*asym_ptr
= *asym_ptr_ptr
;
2589 flagword flags
= asym_ptr
->flags
;
2591 /* When gas creates relocations against local labels, it creates its
2592 own symbol for the section, but does put the symbol into the
2593 symbol chain, so udata is 0. When the linker is generating
2594 relocatable output, this section symbol may be for one of the
2595 input sections rather than the output section. */
2596 if (asym_ptr
->udata
.i
== 0
2597 && (flags
& BSF_SECTION_SYM
)
2598 && asym_ptr
->section
)
2602 if (asym_ptr
->section
->output_section
!= NULL
)
2603 indx
= asym_ptr
->section
->output_section
->index
;
2605 indx
= asym_ptr
->section
->index
;
2606 if (elf_section_syms (abfd
)[indx
])
2607 asym_ptr
->udata
.i
= elf_section_syms (abfd
)[indx
]->udata
.i
;
2610 idx
= asym_ptr
->udata
.i
;
2614 /* This case can occur when using --strip-symbol on a symbol
2615 which is used in a relocation entry. */
2616 (*_bfd_error_handler
)
2617 ("%s: symbol `%s' required but not present",
2618 bfd_get_filename (abfd
), bfd_asymbol_name (asym_ptr
));
2619 bfd_set_error (bfd_error_no_symbols
);
2626 "elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n",
2627 (long) asym_ptr
, asym_ptr
->name
, idx
, flags
,
2628 elf_symbol_flags (flags
));
2636 /* Copy private BFD data. This copies any program header information. */
2639 copy_private_bfd_data (ibfd
, obfd
)
2643 Elf_Internal_Ehdr
*iehdr
;
2644 struct elf_segment_map
*mfirst
;
2645 struct elf_segment_map
**pm
;
2646 Elf_Internal_Phdr
*p
;
2649 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2650 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2653 if (elf_tdata (ibfd
)->phdr
== NULL
)
2656 iehdr
= elf_elfheader (ibfd
);
2661 c
= elf_elfheader (ibfd
)->e_phnum
;
2662 for (i
= 0, p
= elf_tdata (ibfd
)->phdr
; i
< c
; i
++, p
++)
2666 struct elf_segment_map
*m
;
2671 /* The complicated case when p_vaddr is 0 is to handle the
2672 Solaris linker, which generates a PT_INTERP section with
2673 p_vaddr and p_memsz set to 0. */
2674 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2675 if (((s
->vma
>= p
->p_vaddr
2676 && (s
->vma
+ s
->_raw_size
<= p
->p_vaddr
+ p
->p_memsz
2677 || s
->vma
+ s
->_raw_size
<= p
->p_vaddr
+ p
->p_filesz
))
2680 && (s
->flags
& SEC_HAS_CONTENTS
) != 0
2681 && (bfd_vma
) s
->filepos
>= p
->p_offset
2682 && ((bfd_vma
) s
->filepos
+ s
->_raw_size
2683 <= p
->p_offset
+ p
->p_filesz
)))
2684 && (s
->flags
& SEC_ALLOC
) != 0
2685 && s
->output_section
!= NULL
)
2688 m
= ((struct elf_segment_map
*)
2690 (sizeof (struct elf_segment_map
)
2691 + (csecs
- 1) * sizeof (asection
*))));
2696 m
->p_type
= p
->p_type
;
2697 m
->p_flags
= p
->p_flags
;
2698 m
->p_flags_valid
= 1;
2699 m
->p_paddr
= p
->p_paddr
;
2700 m
->p_paddr_valid
= 1;
2702 m
->includes_filehdr
= (p
->p_offset
== 0
2703 && p
->p_filesz
>= iehdr
->e_ehsize
);
2705 m
->includes_phdrs
= (p
->p_offset
<= (bfd_vma
) iehdr
->e_phoff
2706 && (p
->p_offset
+ p
->p_filesz
2707 >= ((bfd_vma
) iehdr
->e_phoff
2708 + iehdr
->e_phnum
* iehdr
->e_phentsize
)));
2711 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2713 if (((s
->vma
>= p
->p_vaddr
2714 && (s
->vma
+ s
->_raw_size
<= p
->p_vaddr
+ p
->p_memsz
2715 || s
->vma
+ s
->_raw_size
<= p
->p_vaddr
+ p
->p_filesz
))
2718 && (s
->flags
& SEC_HAS_CONTENTS
) != 0
2719 && (bfd_vma
) s
->filepos
>= p
->p_offset
2720 && ((bfd_vma
) s
->filepos
+ s
->_raw_size
2721 <= p
->p_offset
+ p
->p_filesz
)))
2722 && (s
->flags
& SEC_ALLOC
) != 0
2723 && s
->output_section
!= NULL
)
2725 m
->sections
[isec
] = s
->output_section
;
2729 BFD_ASSERT (isec
== csecs
);
2736 elf_tdata (obfd
)->segment_map
= mfirst
;
2741 /* Copy private section information. This copies over the entsize
2742 field, and sometimes the info field. */
2745 _bfd_elf_copy_private_section_data (ibfd
, isec
, obfd
, osec
)
2751 Elf_Internal_Shdr
*ihdr
, *ohdr
;
2753 if (ibfd
->xvec
->flavour
!= bfd_target_elf_flavour
2754 || obfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
2757 /* Copy over private BFD data if it has not already been copied.
2758 This must be done here, rather than in the copy_private_bfd_data
2759 entry point, because the latter is called after the section
2760 contents have been set, which means that the program headers have
2761 already been worked out. */
2762 if (elf_tdata (obfd
)->segment_map
== NULL
2763 && elf_tdata (ibfd
)->phdr
!= NULL
)
2767 /* Only set up the segments when all the sections have been set
2769 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
2770 if (s
->output_section
== NULL
)
2774 if (! copy_private_bfd_data (ibfd
, obfd
))
2779 ihdr
= &elf_section_data (isec
)->this_hdr
;
2780 ohdr
= &elf_section_data (osec
)->this_hdr
;
2782 ohdr
->sh_entsize
= ihdr
->sh_entsize
;
2784 if (ihdr
->sh_type
== SHT_SYMTAB
2785 || ihdr
->sh_type
== SHT_DYNSYM
)
2786 ohdr
->sh_info
= ihdr
->sh_info
;
2791 /* Copy private symbol information. If this symbol is in a section
2792 which we did not map into a BFD section, try to map the section
2793 index correctly. We use special macro definitions for the mapped
2794 section indices; these definitions are interpreted by the
2795 swap_out_syms function. */
2797 #define MAP_ONESYMTAB (SHN_LORESERVE - 1)
2798 #define MAP_DYNSYMTAB (SHN_LORESERVE - 2)
2799 #define MAP_STRTAB (SHN_LORESERVE - 3)
2800 #define MAP_SHSTRTAB (SHN_LORESERVE - 4)
2803 _bfd_elf_copy_private_symbol_data (ibfd
, isymarg
, obfd
, osymarg
)
2809 elf_symbol_type
*isym
, *osym
;
2811 isym
= elf_symbol_from (ibfd
, isymarg
);
2812 osym
= elf_symbol_from (obfd
, osymarg
);
2816 && bfd_is_abs_section (isym
->symbol
.section
))
2820 shndx
= isym
->internal_elf_sym
.st_shndx
;
2821 if (shndx
== elf_onesymtab (ibfd
))
2822 shndx
= MAP_ONESYMTAB
;
2823 else if (shndx
== elf_dynsymtab (ibfd
))
2824 shndx
= MAP_DYNSYMTAB
;
2825 else if (shndx
== elf_tdata (ibfd
)->strtab_section
)
2827 else if (shndx
== elf_tdata (ibfd
)->shstrtab_section
)
2828 shndx
= MAP_SHSTRTAB
;
2829 osym
->internal_elf_sym
.st_shndx
= shndx
;
2835 /* Swap out the symbols. */
2838 swap_out_syms (abfd
, sttp
)
2840 struct bfd_strtab_hash
**sttp
;
2842 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2844 if (!elf_map_symbols (abfd
))
2847 /* Dump out the symtabs. */
2849 int symcount
= bfd_get_symcount (abfd
);
2850 asymbol
**syms
= bfd_get_outsymbols (abfd
);
2851 struct bfd_strtab_hash
*stt
;
2852 Elf_Internal_Shdr
*symtab_hdr
;
2853 Elf_Internal_Shdr
*symstrtab_hdr
;
2854 char *outbound_syms
;
2857 stt
= _bfd_elf_stringtab_init ();
2861 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2862 symtab_hdr
->sh_type
= SHT_SYMTAB
;
2863 symtab_hdr
->sh_entsize
= bed
->s
->sizeof_sym
;
2864 symtab_hdr
->sh_size
= symtab_hdr
->sh_entsize
* (symcount
+ 1);
2865 symtab_hdr
->sh_info
= elf_num_locals (abfd
) + 1;
2866 symtab_hdr
->sh_addralign
= bed
->s
->file_align
;
2868 symstrtab_hdr
= &elf_tdata (abfd
)->strtab_hdr
;
2869 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
2871 outbound_syms
= bfd_alloc (abfd
,
2872 (1 + symcount
) * bed
->s
->sizeof_sym
);
2873 if (outbound_syms
== NULL
)
2875 symtab_hdr
->contents
= (PTR
) outbound_syms
;
2877 /* now generate the data (for "contents") */
2879 /* Fill in zeroth symbol and swap it out. */
2880 Elf_Internal_Sym sym
;
2886 sym
.st_shndx
= SHN_UNDEF
;
2887 bed
->s
->swap_symbol_out (abfd
, &sym
, (PTR
) outbound_syms
);
2888 outbound_syms
+= bed
->s
->sizeof_sym
;
2890 for (idx
= 0; idx
< symcount
; idx
++)
2892 Elf_Internal_Sym sym
;
2893 bfd_vma value
= syms
[idx
]->value
;
2894 elf_symbol_type
*type_ptr
;
2895 flagword flags
= syms
[idx
]->flags
;
2898 if (flags
& BSF_SECTION_SYM
)
2899 /* Section symbols have no names. */
2903 sym
.st_name
= (unsigned long) _bfd_stringtab_add (stt
,
2906 if (sym
.st_name
== (unsigned long) -1)
2910 type_ptr
= elf_symbol_from (abfd
, syms
[idx
]);
2912 if (bfd_is_com_section (syms
[idx
]->section
))
2914 /* ELF common symbols put the alignment into the `value' field,
2915 and the size into the `size' field. This is backwards from
2916 how BFD handles it, so reverse it here. */
2917 sym
.st_size
= value
;
2918 if (type_ptr
== NULL
2919 || type_ptr
->internal_elf_sym
.st_value
== 0)
2920 sym
.st_value
= value
>= 16 ? 16 : (1 << bfd_log2 (value
));
2922 sym
.st_value
= type_ptr
->internal_elf_sym
.st_value
;
2923 sym
.st_shndx
= _bfd_elf_section_from_bfd_section (abfd
,
2924 syms
[idx
]->section
);
2928 asection
*sec
= syms
[idx
]->section
;
2931 if (sec
->output_section
)
2933 value
+= sec
->output_offset
;
2934 sec
= sec
->output_section
;
2937 sym
.st_value
= value
;
2938 sym
.st_size
= type_ptr
? type_ptr
->internal_elf_sym
.st_size
: 0;
2940 if (bfd_is_abs_section (sec
)
2942 && type_ptr
->internal_elf_sym
.st_shndx
!= 0)
2944 /* This symbol is in a real ELF section which we did
2945 not create as a BFD section. Undo the mapping done
2946 by copy_private_symbol_data. */
2947 shndx
= type_ptr
->internal_elf_sym
.st_shndx
;
2951 shndx
= elf_onesymtab (abfd
);
2954 shndx
= elf_dynsymtab (abfd
);
2957 shndx
= elf_tdata (abfd
)->strtab_section
;
2960 shndx
= elf_tdata (abfd
)->shstrtab_section
;
2968 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
2974 /* Writing this would be a hell of a lot easier if
2975 we had some decent documentation on bfd, and
2976 knew what to expect of the library, and what to
2977 demand of applications. For example, it
2978 appears that `objcopy' might not set the
2979 section of a symbol to be a section that is
2980 actually in the output file. */
2981 sec2
= bfd_get_section_by_name (abfd
, sec
->name
);
2982 BFD_ASSERT (sec2
!= 0);
2983 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec2
);
2984 BFD_ASSERT (shndx
!= -1);
2988 sym
.st_shndx
= shndx
;
2991 if ((flags
& BSF_FUNCTION
) != 0)
2993 else if ((flags
& BSF_OBJECT
) != 0)
2998 if (bfd_is_com_section (syms
[idx
]->section
))
2999 sym
.st_info
= ELF_ST_INFO (STB_GLOBAL
, type
);
3000 else if (bfd_is_und_section (syms
[idx
]->section
))
3001 sym
.st_info
= ELF_ST_INFO (((flags
& BSF_WEAK
)
3005 else if (flags
& BSF_SECTION_SYM
)
3006 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_SECTION
);
3007 else if (flags
& BSF_FILE
)
3008 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_FILE
);
3011 int bind
= STB_LOCAL
;
3013 if (flags
& BSF_LOCAL
)
3015 else if (flags
& BSF_WEAK
)
3017 else if (flags
& BSF_GLOBAL
)
3020 sym
.st_info
= ELF_ST_INFO (bind
, type
);
3024 bed
->s
->swap_symbol_out (abfd
, &sym
, (PTR
) outbound_syms
);
3025 outbound_syms
+= bed
->s
->sizeof_sym
;
3029 symstrtab_hdr
->sh_size
= _bfd_stringtab_size (stt
);
3030 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
3032 symstrtab_hdr
->sh_flags
= 0;
3033 symstrtab_hdr
->sh_addr
= 0;
3034 symstrtab_hdr
->sh_entsize
= 0;
3035 symstrtab_hdr
->sh_link
= 0;
3036 symstrtab_hdr
->sh_info
= 0;
3037 symstrtab_hdr
->sh_addralign
= 1;
3043 /* Return the number of bytes required to hold the symtab vector.
3045 Note that we base it on the count plus 1, since we will null terminate
3046 the vector allocated based on this size. However, the ELF symbol table
3047 always has a dummy entry as symbol #0, so it ends up even. */
3050 _bfd_elf_get_symtab_upper_bound (abfd
)
3055 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3057 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
3058 symtab_size
= (symcount
- 1 + 1) * (sizeof (asymbol
*));
3064 _bfd_elf_get_dynamic_symtab_upper_bound (abfd
)
3069 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->dynsymtab_hdr
;
3071 if (elf_dynsymtab (abfd
) == 0)
3073 bfd_set_error (bfd_error_invalid_operation
);
3077 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
3078 symtab_size
= (symcount
- 1 + 1) * (sizeof (asymbol
*));
3084 _bfd_elf_get_reloc_upper_bound (abfd
, asect
)
3088 return (asect
->reloc_count
+ 1) * sizeof (arelent
*);
3091 /* Canonicalize the relocs. */
3094 _bfd_elf_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
3103 if (! get_elf_backend_data (abfd
)->s
->slurp_reloc_table (abfd
, section
, symbols
))
3106 tblptr
= section
->relocation
;
3107 for (i
= 0; i
< section
->reloc_count
; i
++)
3108 *relptr
++ = tblptr
++;
3112 return section
->reloc_count
;
3116 _bfd_elf_get_symtab (abfd
, alocation
)
3118 asymbol
**alocation
;
3120 long symcount
= get_elf_backend_data (abfd
)->s
->slurp_symbol_table (abfd
, alocation
, false);
3123 bfd_get_symcount (abfd
) = symcount
;
3128 _bfd_elf_canonicalize_dynamic_symtab (abfd
, alocation
)
3130 asymbol
**alocation
;
3132 return get_elf_backend_data (abfd
)->s
->slurp_symbol_table (abfd
, alocation
, true);
3136 _bfd_elf_make_empty_symbol (abfd
)
3139 elf_symbol_type
*newsym
;
3141 newsym
= (elf_symbol_type
*) bfd_zalloc (abfd
, sizeof (elf_symbol_type
));
3146 newsym
->symbol
.the_bfd
= abfd
;
3147 return &newsym
->symbol
;
3152 _bfd_elf_get_symbol_info (ignore_abfd
, symbol
, ret
)
3157 bfd_symbol_info (symbol
, ret
);
3161 _bfd_elf_get_lineno (ignore_abfd
, symbol
)
3170 _bfd_elf_set_arch_mach (abfd
, arch
, machine
)
3172 enum bfd_architecture arch
;
3173 unsigned long machine
;
3175 /* If this isn't the right architecture for this backend, and this
3176 isn't the generic backend, fail. */
3177 if (arch
!= get_elf_backend_data (abfd
)->arch
3178 && arch
!= bfd_arch_unknown
3179 && get_elf_backend_data (abfd
)->arch
!= bfd_arch_unknown
)
3182 return bfd_default_set_arch_mach (abfd
, arch
, machine
);
3185 /* Find the nearest line to a particular section and offset, for error
3189 _bfd_elf_find_nearest_line (abfd
,
3200 CONST
char **filename_ptr
;
3201 CONST
char **functionname_ptr
;
3202 unsigned int *line_ptr
;
3205 const char *filename
;
3210 if (! _bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
3211 &found
, filename_ptr
,
3212 functionname_ptr
, line_ptr
,
3213 &elf_tdata (abfd
)->line_info
))
3218 if (symbols
== NULL
)
3225 for (p
= symbols
; *p
!= NULL
; p
++)
3229 q
= (elf_symbol_type
*) *p
;
3231 if (bfd_get_section (&q
->symbol
) != section
)
3234 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
3239 filename
= bfd_asymbol_name (&q
->symbol
);
3242 if (q
->symbol
.section
== section
3243 && q
->symbol
.value
>= low_func
3244 && q
->symbol
.value
<= offset
)
3246 func
= (asymbol
*) q
;
3247 low_func
= q
->symbol
.value
;
3256 *filename_ptr
= filename
;
3257 *functionname_ptr
= bfd_asymbol_name (func
);
3263 _bfd_elf_sizeof_headers (abfd
, reloc
)
3269 ret
= get_elf_backend_data (abfd
)->s
->sizeof_ehdr
;
3271 ret
+= get_program_header_size (abfd
);
3276 _bfd_elf_set_section_contents (abfd
, section
, location
, offset
, count
)
3281 bfd_size_type count
;
3283 Elf_Internal_Shdr
*hdr
;
3285 if (! abfd
->output_has_begun
3286 && ! _bfd_elf_compute_section_file_positions (abfd
,
3287 (struct bfd_link_info
*) NULL
))
3290 hdr
= &elf_section_data (section
)->this_hdr
;
3292 if (bfd_seek (abfd
, hdr
->sh_offset
+ offset
, SEEK_SET
) == -1)
3294 if (bfd_write (location
, 1, count
, abfd
) != count
)
3301 _bfd_elf_no_info_to_howto (abfd
, cache_ptr
, dst
)
3304 Elf_Internal_Rela
*dst
;
3311 _bfd_elf_no_info_to_howto_rel (abfd
, cache_ptr
, dst
)
3314 Elf_Internal_Rel
*dst
;