1 /* ELF executable support for BFD.
2 Copyright 1993, 94, 95, 96, 97, 98, 99, 2000 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 (dir
, ind
)
914 struct elf_link_hash_entry
*dir
, *ind
;
916 /* Copy down any references that we may have already seen to the
917 symbol which just became indirect. */
919 dir
->elf_link_hash_flags
|=
920 (ind
->elf_link_hash_flags
921 & (ELF_LINK_HASH_REF_DYNAMIC
922 | ELF_LINK_HASH_REF_REGULAR
923 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
924 | ELF_LINK_NON_GOT_REF
));
926 /* Copy over the global and procedure linkage table offset entries.
927 These may have been already set up by a check_relocs routine. */
928 if (dir
->got
.offset
== (bfd_vma
) -1)
930 dir
->got
.offset
= ind
->got
.offset
;
931 ind
->got
.offset
= (bfd_vma
) -1;
933 BFD_ASSERT (ind
->got
.offset
== (bfd_vma
) -1);
935 if (dir
->plt
.offset
== (bfd_vma
) -1)
937 dir
->plt
.offset
= ind
->plt
.offset
;
938 ind
->plt
.offset
= (bfd_vma
) -1;
940 BFD_ASSERT (ind
->plt
.offset
== (bfd_vma
) -1);
942 if (dir
->dynindx
== -1)
944 dir
->dynindx
= ind
->dynindx
;
945 dir
->dynstr_index
= ind
->dynstr_index
;
947 ind
->dynstr_index
= 0;
949 BFD_ASSERT (ind
->dynindx
== -1);
953 _bfd_elf_link_hash_hide_symbol(h
)
954 struct elf_link_hash_entry
*h
;
956 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
958 h
->plt
.offset
= (bfd_vma
) -1;
961 /* Initialize an ELF linker hash table. */
964 _bfd_elf_link_hash_table_init (table
, abfd
, newfunc
)
965 struct elf_link_hash_table
*table
;
967 struct bfd_hash_entry
*(*newfunc
) PARAMS ((struct bfd_hash_entry
*,
968 struct bfd_hash_table
*,
971 table
->dynamic_sections_created
= false;
972 table
->dynobj
= NULL
;
973 /* The first dynamic symbol is a dummy. */
974 table
->dynsymcount
= 1;
975 table
->dynstr
= NULL
;
976 table
->bucketcount
= 0;
977 table
->needed
= NULL
;
979 table
->stab_info
= NULL
;
980 return _bfd_link_hash_table_init (&table
->root
, abfd
, newfunc
);
983 /* Create an ELF linker hash table. */
985 struct bfd_link_hash_table
*
986 _bfd_elf_link_hash_table_create (abfd
)
989 struct elf_link_hash_table
*ret
;
991 ret
= ((struct elf_link_hash_table
*)
992 bfd_alloc (abfd
, sizeof (struct elf_link_hash_table
)));
993 if (ret
== (struct elf_link_hash_table
*) NULL
)
996 if (! _bfd_elf_link_hash_table_init (ret
, abfd
, _bfd_elf_link_hash_newfunc
))
998 bfd_release (abfd
, ret
);
1005 /* This is a hook for the ELF emulation code in the generic linker to
1006 tell the backend linker what file name to use for the DT_NEEDED
1007 entry for a dynamic object. The generic linker passes name as an
1008 empty string to indicate that no DT_NEEDED entry should be made. */
1011 bfd_elf_set_dt_needed_name (abfd
, name
)
1015 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1016 && bfd_get_format (abfd
) == bfd_object
)
1017 elf_dt_name (abfd
) = name
;
1020 /* Get the list of DT_NEEDED entries for a link. This is a hook for
1021 the linker ELF emulation code. */
1023 struct bfd_link_needed_list
*
1024 bfd_elf_get_needed_list (abfd
, info
)
1025 bfd
*abfd ATTRIBUTE_UNUSED
;
1026 struct bfd_link_info
*info
;
1028 if (info
->hash
->creator
->flavour
!= bfd_target_elf_flavour
)
1030 return elf_hash_table (info
)->needed
;
1033 /* Get the name actually used for a dynamic object for a link. This
1034 is the SONAME entry if there is one. Otherwise, it is the string
1035 passed to bfd_elf_set_dt_needed_name, or it is the filename. */
1038 bfd_elf_get_dt_soname (abfd
)
1041 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1042 && bfd_get_format (abfd
) == bfd_object
)
1043 return elf_dt_name (abfd
);
1047 /* Get the list of DT_NEEDED entries from a BFD. This is a hook for
1048 the ELF linker emulation code. */
1051 bfd_elf_get_bfd_needed_list (abfd
, pneeded
)
1053 struct bfd_link_needed_list
**pneeded
;
1056 bfd_byte
*dynbuf
= NULL
;
1059 bfd_byte
*extdyn
, *extdynend
;
1061 void (*swap_dyn_in
) PARAMS ((bfd
*, const PTR
, Elf_Internal_Dyn
*));
1065 if (bfd_get_flavour (abfd
) != bfd_target_elf_flavour
1066 || bfd_get_format (abfd
) != bfd_object
)
1069 s
= bfd_get_section_by_name (abfd
, ".dynamic");
1070 if (s
== NULL
|| s
->_raw_size
== 0)
1073 dynbuf
= (bfd_byte
*) bfd_malloc (s
->_raw_size
);
1077 if (! bfd_get_section_contents (abfd
, s
, (PTR
) dynbuf
, (file_ptr
) 0,
1081 elfsec
= _bfd_elf_section_from_bfd_section (abfd
, s
);
1085 link
= elf_elfsections (abfd
)[elfsec
]->sh_link
;
1087 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
1088 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
1091 extdynend
= extdyn
+ s
->_raw_size
;
1092 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
1094 Elf_Internal_Dyn dyn
;
1096 (*swap_dyn_in
) (abfd
, (PTR
) extdyn
, &dyn
);
1098 if (dyn
.d_tag
== DT_NULL
)
1101 if (dyn
.d_tag
== DT_NEEDED
)
1104 struct bfd_link_needed_list
*l
;
1106 string
= bfd_elf_string_from_elf_section (abfd
, link
,
1111 l
= (struct bfd_link_needed_list
*) bfd_alloc (abfd
, sizeof *l
);
1132 /* Allocate an ELF string table--force the first byte to be zero. */
1134 struct bfd_strtab_hash
*
1135 _bfd_elf_stringtab_init ()
1137 struct bfd_strtab_hash
*ret
;
1139 ret
= _bfd_stringtab_init ();
1144 loc
= _bfd_stringtab_add (ret
, "", true, false);
1145 BFD_ASSERT (loc
== 0 || loc
== (bfd_size_type
) -1);
1146 if (loc
== (bfd_size_type
) -1)
1148 _bfd_stringtab_free (ret
);
1155 /* ELF .o/exec file reading */
1157 /* Create a new bfd section from an ELF section header. */
1160 bfd_section_from_shdr (abfd
, shindex
)
1162 unsigned int shindex
;
1164 Elf_Internal_Shdr
*hdr
= elf_elfsections (abfd
)[shindex
];
1165 Elf_Internal_Ehdr
*ehdr
= elf_elfheader (abfd
);
1166 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1169 name
= elf_string_from_elf_strtab (abfd
, hdr
->sh_name
);
1171 switch (hdr
->sh_type
)
1174 /* Inactive section. Throw it away. */
1177 case SHT_PROGBITS
: /* Normal section with contents. */
1178 case SHT_DYNAMIC
: /* Dynamic linking information. */
1179 case SHT_NOBITS
: /* .bss section. */
1180 case SHT_HASH
: /* .hash section. */
1181 case SHT_NOTE
: /* .note section. */
1182 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1184 case SHT_SYMTAB
: /* A symbol table */
1185 if (elf_onesymtab (abfd
) == shindex
)
1188 BFD_ASSERT (hdr
->sh_entsize
== bed
->s
->sizeof_sym
);
1189 BFD_ASSERT (elf_onesymtab (abfd
) == 0);
1190 elf_onesymtab (abfd
) = shindex
;
1191 elf_tdata (abfd
)->symtab_hdr
= *hdr
;
1192 elf_elfsections (abfd
)[shindex
] = hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1193 abfd
->flags
|= HAS_SYMS
;
1195 /* Sometimes a shared object will map in the symbol table. If
1196 SHF_ALLOC is set, and this is a shared object, then we also
1197 treat this section as a BFD section. We can not base the
1198 decision purely on SHF_ALLOC, because that flag is sometimes
1199 set in a relocateable object file, which would confuse the
1201 if ((hdr
->sh_flags
& SHF_ALLOC
) != 0
1202 && (abfd
->flags
& DYNAMIC
) != 0
1203 && ! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
))
1208 case SHT_DYNSYM
: /* A dynamic symbol table */
1209 if (elf_dynsymtab (abfd
) == shindex
)
1212 BFD_ASSERT (hdr
->sh_entsize
== bed
->s
->sizeof_sym
);
1213 BFD_ASSERT (elf_dynsymtab (abfd
) == 0);
1214 elf_dynsymtab (abfd
) = shindex
;
1215 elf_tdata (abfd
)->dynsymtab_hdr
= *hdr
;
1216 elf_elfsections (abfd
)[shindex
] = hdr
= &elf_tdata (abfd
)->dynsymtab_hdr
;
1217 abfd
->flags
|= HAS_SYMS
;
1219 /* Besides being a symbol table, we also treat this as a regular
1220 section, so that objcopy can handle it. */
1221 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1223 case SHT_STRTAB
: /* A string table */
1224 if (hdr
->bfd_section
!= NULL
)
1226 if (ehdr
->e_shstrndx
== shindex
)
1228 elf_tdata (abfd
)->shstrtab_hdr
= *hdr
;
1229 elf_elfsections (abfd
)[shindex
] = &elf_tdata (abfd
)->shstrtab_hdr
;
1235 for (i
= 1; i
< ehdr
->e_shnum
; i
++)
1237 Elf_Internal_Shdr
*hdr2
= elf_elfsections (abfd
)[i
];
1238 if (hdr2
->sh_link
== shindex
)
1240 if (! bfd_section_from_shdr (abfd
, i
))
1242 if (elf_onesymtab (abfd
) == i
)
1244 elf_tdata (abfd
)->strtab_hdr
= *hdr
;
1245 elf_elfsections (abfd
)[shindex
] =
1246 &elf_tdata (abfd
)->strtab_hdr
;
1249 if (elf_dynsymtab (abfd
) == i
)
1251 elf_tdata (abfd
)->dynstrtab_hdr
= *hdr
;
1252 elf_elfsections (abfd
)[shindex
] = hdr
=
1253 &elf_tdata (abfd
)->dynstrtab_hdr
;
1254 /* We also treat this as a regular section, so
1255 that objcopy can handle it. */
1258 #if 0 /* Not handling other string tables specially right now. */
1259 hdr2
= elf_elfsections (abfd
)[i
]; /* in case it moved */
1260 /* We have a strtab for some random other section. */
1261 newsect
= (asection
*) hdr2
->bfd_section
;
1264 hdr
->bfd_section
= newsect
;
1265 hdr2
= &elf_section_data (newsect
)->str_hdr
;
1267 elf_elfsections (abfd
)[shindex
] = hdr2
;
1273 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1277 /* *These* do a lot of work -- but build no sections! */
1279 asection
*target_sect
;
1280 Elf_Internal_Shdr
*hdr2
;
1282 /* Check for a bogus link to avoid crashing. */
1283 if (hdr
->sh_link
>= ehdr
->e_shnum
)
1285 ((*_bfd_error_handler
)
1286 (_("%s: invalid link %lu for reloc section %s (index %u)"),
1287 bfd_get_filename (abfd
), hdr
->sh_link
, name
, shindex
));
1288 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1291 /* For some incomprehensible reason Oracle distributes
1292 libraries for Solaris in which some of the objects have
1293 bogus sh_link fields. It would be nice if we could just
1294 reject them, but, unfortunately, some people need to use
1295 them. We scan through the section headers; if we find only
1296 one suitable symbol table, we clobber the sh_link to point
1297 to it. I hope this doesn't break anything. */
1298 if (elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
!= SHT_SYMTAB
1299 && elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
!= SHT_DYNSYM
)
1305 for (scan
= 1; scan
< ehdr
->e_shnum
; scan
++)
1307 if (elf_elfsections (abfd
)[scan
]->sh_type
== SHT_SYMTAB
1308 || elf_elfsections (abfd
)[scan
]->sh_type
== SHT_DYNSYM
)
1319 hdr
->sh_link
= found
;
1322 /* Get the symbol table. */
1323 if (elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
== SHT_SYMTAB
1324 && ! bfd_section_from_shdr (abfd
, hdr
->sh_link
))
1327 /* If this reloc section does not use the main symbol table we
1328 don't treat it as a reloc section. BFD can't adequately
1329 represent such a section, so at least for now, we don't
1330 try. We just present it as a normal section. */
1331 if (hdr
->sh_link
!= elf_onesymtab (abfd
))
1332 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1334 if (! bfd_section_from_shdr (abfd
, hdr
->sh_info
))
1336 target_sect
= bfd_section_from_elf_index (abfd
, hdr
->sh_info
);
1337 if (target_sect
== NULL
)
1340 if ((target_sect
->flags
& SEC_RELOC
) == 0
1341 || target_sect
->reloc_count
== 0)
1342 hdr2
= &elf_section_data (target_sect
)->rel_hdr
;
1345 BFD_ASSERT (elf_section_data (target_sect
)->rel_hdr2
== NULL
);
1346 hdr2
= (Elf_Internal_Shdr
*) bfd_alloc (abfd
, sizeof (*hdr2
));
1347 elf_section_data (target_sect
)->rel_hdr2
= hdr2
;
1350 elf_elfsections (abfd
)[shindex
] = hdr2
;
1351 target_sect
->reloc_count
+= hdr
->sh_size
/ hdr
->sh_entsize
;
1352 target_sect
->flags
|= SEC_RELOC
;
1353 target_sect
->relocation
= NULL
;
1354 target_sect
->rel_filepos
= hdr
->sh_offset
;
1355 /* In the section to which the relocations apply, mark whether
1356 its relocations are of the REL or RELA variety. */
1357 elf_section_data (target_sect
)->use_rela_p
1358 = (hdr
->sh_type
== SHT_RELA
);
1359 abfd
->flags
|= HAS_RELOC
;
1364 case SHT_GNU_verdef
:
1365 elf_dynverdef (abfd
) = shindex
;
1366 elf_tdata (abfd
)->dynverdef_hdr
= *hdr
;
1367 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1370 case SHT_GNU_versym
:
1371 elf_dynversym (abfd
) = shindex
;
1372 elf_tdata (abfd
)->dynversym_hdr
= *hdr
;
1373 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1376 case SHT_GNU_verneed
:
1377 elf_dynverref (abfd
) = shindex
;
1378 elf_tdata (abfd
)->dynverref_hdr
= *hdr
;
1379 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1386 /* Check for any processor-specific section types. */
1388 if (bed
->elf_backend_section_from_shdr
)
1389 (*bed
->elf_backend_section_from_shdr
) (abfd
, hdr
, name
);
1397 /* Given an ELF section number, retrieve the corresponding BFD
1401 bfd_section_from_elf_index (abfd
, index
)
1405 BFD_ASSERT (index
> 0 && index
< SHN_LORESERVE
);
1406 if (index
>= elf_elfheader (abfd
)->e_shnum
)
1408 return elf_elfsections (abfd
)[index
]->bfd_section
;
1412 _bfd_elf_new_section_hook (abfd
, sec
)
1416 struct bfd_elf_section_data
*sdata
;
1418 sdata
= (struct bfd_elf_section_data
*) bfd_zalloc (abfd
, sizeof (*sdata
));
1421 sec
->used_by_bfd
= (PTR
) sdata
;
1423 /* Indicate whether or not this section should use RELA relocations. */
1425 = get_elf_backend_data (abfd
)->default_use_rela_p
;
1430 /* Create a new bfd section from an ELF program header.
1432 Since program segments have no names, we generate a synthetic name
1433 of the form segment<NUM>, where NUM is generally the index in the
1434 program header table. For segments that are split (see below) we
1435 generate the names segment<NUM>a and segment<NUM>b.
1437 Note that some program segments may have a file size that is different than
1438 (less than) the memory size. All this means is that at execution the
1439 system must allocate the amount of memory specified by the memory size,
1440 but only initialize it with the first "file size" bytes read from the
1441 file. This would occur for example, with program segments consisting
1442 of combined data+bss.
1444 To handle the above situation, this routine generates TWO bfd sections
1445 for the single program segment. The first has the length specified by
1446 the file size of the segment, and the second has the length specified
1447 by the difference between the two sizes. In effect, the segment is split
1448 into it's initialized and uninitialized parts.
1453 _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, typename
)
1455 Elf_Internal_Phdr
*hdr
;
1457 const char *typename
;
1464 split
= ((hdr
->p_memsz
> 0)
1465 && (hdr
->p_filesz
> 0)
1466 && (hdr
->p_memsz
> hdr
->p_filesz
));
1467 sprintf (namebuf
, "%s%d%s", typename
, index
, split
? "a" : "");
1468 name
= bfd_alloc (abfd
, strlen (namebuf
) + 1);
1471 strcpy (name
, namebuf
);
1472 newsect
= bfd_make_section (abfd
, name
);
1473 if (newsect
== NULL
)
1475 newsect
->vma
= hdr
->p_vaddr
;
1476 newsect
->lma
= hdr
->p_paddr
;
1477 newsect
->_raw_size
= hdr
->p_filesz
;
1478 newsect
->filepos
= hdr
->p_offset
;
1479 newsect
->flags
|= SEC_HAS_CONTENTS
;
1480 if (hdr
->p_type
== PT_LOAD
)
1482 newsect
->flags
|= SEC_ALLOC
;
1483 newsect
->flags
|= SEC_LOAD
;
1484 if (hdr
->p_flags
& PF_X
)
1486 /* FIXME: all we known is that it has execute PERMISSION,
1488 newsect
->flags
|= SEC_CODE
;
1491 if (!(hdr
->p_flags
& PF_W
))
1493 newsect
->flags
|= SEC_READONLY
;
1498 sprintf (namebuf
, "%s%db", typename
, index
);
1499 name
= bfd_alloc (abfd
, strlen (namebuf
) + 1);
1502 strcpy (name
, namebuf
);
1503 newsect
= bfd_make_section (abfd
, name
);
1504 if (newsect
== NULL
)
1506 newsect
->vma
= hdr
->p_vaddr
+ hdr
->p_filesz
;
1507 newsect
->lma
= hdr
->p_paddr
+ hdr
->p_filesz
;
1508 newsect
->_raw_size
= hdr
->p_memsz
- hdr
->p_filesz
;
1509 if (hdr
->p_type
== PT_LOAD
)
1511 newsect
->flags
|= SEC_ALLOC
;
1512 if (hdr
->p_flags
& PF_X
)
1513 newsect
->flags
|= SEC_CODE
;
1515 if (!(hdr
->p_flags
& PF_W
))
1516 newsect
->flags
|= SEC_READONLY
;
1523 bfd_section_from_phdr (abfd
, hdr
, index
)
1525 Elf_Internal_Phdr
*hdr
;
1528 struct elf_backend_data
*bed
;
1530 switch (hdr
->p_type
)
1533 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "null");
1536 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "load");
1539 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "dynamic");
1542 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "interp");
1545 if (! _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "note"))
1547 if (! elfcore_read_notes (abfd
, hdr
->p_offset
, hdr
->p_filesz
))
1552 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "shlib");
1555 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "phdr");
1558 /* Check for any processor-specific program segment types.
1559 If no handler for them, default to making "segment" sections. */
1560 bed
= get_elf_backend_data (abfd
);
1561 if (bed
->elf_backend_section_from_phdr
)
1562 return (*bed
->elf_backend_section_from_phdr
) (abfd
, hdr
, index
);
1564 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "segment");
1568 /* Initialize REL_HDR, the section-header for new section, containing
1569 relocations against ASECT. If USE_RELA_P is true, we use RELA
1570 relocations; otherwise, we use REL relocations. */
1573 _bfd_elf_init_reloc_shdr (abfd
, rel_hdr
, asect
, use_rela_p
)
1575 Elf_Internal_Shdr
*rel_hdr
;
1580 struct elf_backend_data
*bed
;
1582 bed
= get_elf_backend_data (abfd
);
1583 name
= bfd_alloc (abfd
, sizeof ".rela" + strlen (asect
->name
));
1586 sprintf (name
, "%s%s", use_rela_p
? ".rela" : ".rel", asect
->name
);
1588 (unsigned int) _bfd_stringtab_add (elf_shstrtab (abfd
), name
,
1590 if (rel_hdr
->sh_name
== (unsigned int) -1)
1592 rel_hdr
->sh_type
= use_rela_p
? SHT_RELA
: SHT_REL
;
1593 rel_hdr
->sh_entsize
= (use_rela_p
1594 ? bed
->s
->sizeof_rela
1595 : bed
->s
->sizeof_rel
);
1596 rel_hdr
->sh_addralign
= bed
->s
->file_align
;
1597 rel_hdr
->sh_flags
= 0;
1598 rel_hdr
->sh_addr
= 0;
1599 rel_hdr
->sh_size
= 0;
1600 rel_hdr
->sh_offset
= 0;
1605 /* Set up an ELF internal section header for a section. */
1609 elf_fake_sections (abfd
, asect
, failedptrarg
)
1614 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1615 boolean
*failedptr
= (boolean
*) failedptrarg
;
1616 Elf_Internal_Shdr
*this_hdr
;
1620 /* We already failed; just get out of the bfd_map_over_sections
1625 this_hdr
= &elf_section_data (asect
)->this_hdr
;
1627 this_hdr
->sh_name
= (unsigned long) _bfd_stringtab_add (elf_shstrtab (abfd
),
1630 if (this_hdr
->sh_name
== (unsigned long) -1)
1636 this_hdr
->sh_flags
= 0;
1638 if ((asect
->flags
& SEC_ALLOC
) != 0
1639 || asect
->user_set_vma
)
1640 this_hdr
->sh_addr
= asect
->vma
;
1642 this_hdr
->sh_addr
= 0;
1644 this_hdr
->sh_offset
= 0;
1645 this_hdr
->sh_size
= asect
->_raw_size
;
1646 this_hdr
->sh_link
= 0;
1647 this_hdr
->sh_addralign
= 1 << asect
->alignment_power
;
1648 /* The sh_entsize and sh_info fields may have been set already by
1649 copy_private_section_data. */
1651 this_hdr
->bfd_section
= asect
;
1652 this_hdr
->contents
= NULL
;
1654 /* FIXME: This should not be based on section names. */
1655 if (strcmp (asect
->name
, ".dynstr") == 0)
1656 this_hdr
->sh_type
= SHT_STRTAB
;
1657 else if (strcmp (asect
->name
, ".hash") == 0)
1659 this_hdr
->sh_type
= SHT_HASH
;
1660 this_hdr
->sh_entsize
= bed
->s
->sizeof_hash_entry
;
1662 else if (strcmp (asect
->name
, ".dynsym") == 0)
1664 this_hdr
->sh_type
= SHT_DYNSYM
;
1665 this_hdr
->sh_entsize
= bed
->s
->sizeof_sym
;
1667 else if (strcmp (asect
->name
, ".dynamic") == 0)
1669 this_hdr
->sh_type
= SHT_DYNAMIC
;
1670 this_hdr
->sh_entsize
= bed
->s
->sizeof_dyn
;
1672 else if (strncmp (asect
->name
, ".rela", 5) == 0
1673 && get_elf_backend_data (abfd
)->may_use_rela_p
)
1675 this_hdr
->sh_type
= SHT_RELA
;
1676 this_hdr
->sh_entsize
= bed
->s
->sizeof_rela
;
1678 else if (strncmp (asect
->name
, ".rel", 4) == 0
1679 && get_elf_backend_data (abfd
)->may_use_rel_p
)
1681 this_hdr
->sh_type
= SHT_REL
;
1682 this_hdr
->sh_entsize
= bed
->s
->sizeof_rel
;
1684 else if (strncmp (asect
->name
, ".note", 5) == 0)
1685 this_hdr
->sh_type
= SHT_NOTE
;
1686 else if (strncmp (asect
->name
, ".stab", 5) == 0
1687 && strcmp (asect
->name
+ strlen (asect
->name
) - 3, "str") == 0)
1688 this_hdr
->sh_type
= SHT_STRTAB
;
1689 else if (strcmp (asect
->name
, ".gnu.version") == 0)
1691 this_hdr
->sh_type
= SHT_GNU_versym
;
1692 this_hdr
->sh_entsize
= sizeof (Elf_External_Versym
);
1694 else if (strcmp (asect
->name
, ".gnu.version_d") == 0)
1696 this_hdr
->sh_type
= SHT_GNU_verdef
;
1697 this_hdr
->sh_entsize
= 0;
1698 /* objcopy or strip will copy over sh_info, but may not set
1699 cverdefs. The linker will set cverdefs, but sh_info will be
1701 if (this_hdr
->sh_info
== 0)
1702 this_hdr
->sh_info
= elf_tdata (abfd
)->cverdefs
;
1704 BFD_ASSERT (elf_tdata (abfd
)->cverdefs
== 0
1705 || this_hdr
->sh_info
== elf_tdata (abfd
)->cverdefs
);
1707 else if (strcmp (asect
->name
, ".gnu.version_r") == 0)
1709 this_hdr
->sh_type
= SHT_GNU_verneed
;
1710 this_hdr
->sh_entsize
= 0;
1711 /* objcopy or strip will copy over sh_info, but may not set
1712 cverrefs. The linker will set cverrefs, but sh_info will be
1714 if (this_hdr
->sh_info
== 0)
1715 this_hdr
->sh_info
= elf_tdata (abfd
)->cverrefs
;
1717 BFD_ASSERT (elf_tdata (abfd
)->cverrefs
== 0
1718 || this_hdr
->sh_info
== elf_tdata (abfd
)->cverrefs
);
1720 else if ((asect
->flags
& SEC_ALLOC
) != 0
1721 && (asect
->flags
& SEC_LOAD
) != 0)
1722 this_hdr
->sh_type
= SHT_PROGBITS
;
1723 else if ((asect
->flags
& SEC_ALLOC
) != 0
1724 && ((asect
->flags
& SEC_LOAD
) == 0))
1725 this_hdr
->sh_type
= SHT_NOBITS
;
1729 this_hdr
->sh_type
= SHT_PROGBITS
;
1732 if ((asect
->flags
& SEC_ALLOC
) != 0)
1733 this_hdr
->sh_flags
|= SHF_ALLOC
;
1734 if ((asect
->flags
& SEC_READONLY
) == 0)
1735 this_hdr
->sh_flags
|= SHF_WRITE
;
1736 if ((asect
->flags
& SEC_CODE
) != 0)
1737 this_hdr
->sh_flags
|= SHF_EXECINSTR
;
1739 /* Check for processor-specific section types. */
1740 if (bed
->elf_backend_fake_sections
)
1741 (*bed
->elf_backend_fake_sections
) (abfd
, this_hdr
, asect
);
1743 /* If the section has relocs, set up a section header for the
1744 SHT_REL[A] section. If two relocation sections are required for
1745 this section, it is up to the processor-specific back-end to
1746 create the other. */
1747 if ((asect
->flags
& SEC_RELOC
) != 0
1748 && !_bfd_elf_init_reloc_shdr (abfd
,
1749 &elf_section_data (asect
)->rel_hdr
,
1751 elf_section_data (asect
)->use_rela_p
))
1755 /* Assign all ELF section numbers. The dummy first section is handled here
1756 too. The link/info pointers for the standard section types are filled
1757 in here too, while we're at it. */
1760 assign_section_numbers (abfd
)
1763 struct elf_obj_tdata
*t
= elf_tdata (abfd
);
1765 unsigned int section_number
;
1766 Elf_Internal_Shdr
**i_shdrp
;
1767 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1771 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
1773 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
1775 d
->this_idx
= section_number
++;
1776 if ((sec
->flags
& SEC_RELOC
) == 0)
1779 d
->rel_idx
= section_number
++;
1782 d
->rel_idx2
= section_number
++;
1787 t
->shstrtab_section
= section_number
++;
1788 elf_elfheader (abfd
)->e_shstrndx
= t
->shstrtab_section
;
1789 t
->shstrtab_hdr
.sh_size
= _bfd_stringtab_size (elf_shstrtab (abfd
));
1791 if (bfd_get_symcount (abfd
) > 0)
1793 t
->symtab_section
= section_number
++;
1794 t
->strtab_section
= section_number
++;
1797 elf_elfheader (abfd
)->e_shnum
= section_number
;
1799 /* Set up the list of section header pointers, in agreement with the
1801 i_shdrp
= ((Elf_Internal_Shdr
**)
1802 bfd_alloc (abfd
, section_number
* sizeof (Elf_Internal_Shdr
*)));
1803 if (i_shdrp
== NULL
)
1806 i_shdrp
[0] = ((Elf_Internal_Shdr
*)
1807 bfd_alloc (abfd
, sizeof (Elf_Internal_Shdr
)));
1808 if (i_shdrp
[0] == NULL
)
1810 bfd_release (abfd
, i_shdrp
);
1813 memset (i_shdrp
[0], 0, sizeof (Elf_Internal_Shdr
));
1815 elf_elfsections (abfd
) = i_shdrp
;
1817 i_shdrp
[t
->shstrtab_section
] = &t
->shstrtab_hdr
;
1818 if (bfd_get_symcount (abfd
) > 0)
1820 i_shdrp
[t
->symtab_section
] = &t
->symtab_hdr
;
1821 i_shdrp
[t
->strtab_section
] = &t
->strtab_hdr
;
1822 t
->symtab_hdr
.sh_link
= t
->strtab_section
;
1824 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
1826 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
1830 i_shdrp
[d
->this_idx
] = &d
->this_hdr
;
1831 if (d
->rel_idx
!= 0)
1832 i_shdrp
[d
->rel_idx
] = &d
->rel_hdr
;
1833 if (d
->rel_idx2
!= 0)
1834 i_shdrp
[d
->rel_idx2
] = d
->rel_hdr2
;
1836 /* Fill in the sh_link and sh_info fields while we're at it. */
1838 /* sh_link of a reloc section is the section index of the symbol
1839 table. sh_info is the section index of the section to which
1840 the relocation entries apply. */
1841 if (d
->rel_idx
!= 0)
1843 d
->rel_hdr
.sh_link
= t
->symtab_section
;
1844 d
->rel_hdr
.sh_info
= d
->this_idx
;
1846 if (d
->rel_idx2
!= 0)
1848 d
->rel_hdr2
->sh_link
= t
->symtab_section
;
1849 d
->rel_hdr2
->sh_info
= d
->this_idx
;
1852 switch (d
->this_hdr
.sh_type
)
1856 /* A reloc section which we are treating as a normal BFD
1857 section. sh_link is the section index of the symbol
1858 table. sh_info is the section index of the section to
1859 which the relocation entries apply. We assume that an
1860 allocated reloc section uses the dynamic symbol table.
1861 FIXME: How can we be sure? */
1862 s
= bfd_get_section_by_name (abfd
, ".dynsym");
1864 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
1866 /* We look up the section the relocs apply to by name. */
1868 if (d
->this_hdr
.sh_type
== SHT_REL
)
1872 s
= bfd_get_section_by_name (abfd
, name
);
1874 d
->this_hdr
.sh_info
= elf_section_data (s
)->this_idx
;
1878 /* We assume that a section named .stab*str is a stabs
1879 string section. We look for a section with the same name
1880 but without the trailing ``str'', and set its sh_link
1881 field to point to this section. */
1882 if (strncmp (sec
->name
, ".stab", sizeof ".stab" - 1) == 0
1883 && strcmp (sec
->name
+ strlen (sec
->name
) - 3, "str") == 0)
1888 len
= strlen (sec
->name
);
1889 alc
= (char *) bfd_malloc (len
- 2);
1892 strncpy (alc
, sec
->name
, len
- 3);
1893 alc
[len
- 3] = '\0';
1894 s
= bfd_get_section_by_name (abfd
, alc
);
1898 elf_section_data (s
)->this_hdr
.sh_link
= d
->this_idx
;
1900 /* This is a .stab section. */
1901 elf_section_data (s
)->this_hdr
.sh_entsize
=
1902 4 + 2 * (bed
->s
->arch_size
/ 8);
1909 case SHT_GNU_verneed
:
1910 case SHT_GNU_verdef
:
1911 /* sh_link is the section header index of the string table
1912 used for the dynamic entries, or the symbol table, or the
1914 s
= bfd_get_section_by_name (abfd
, ".dynstr");
1916 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
1920 case SHT_GNU_versym
:
1921 /* sh_link is the section header index of the symbol table
1922 this hash table or version table is for. */
1923 s
= bfd_get_section_by_name (abfd
, ".dynsym");
1925 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
1933 /* Map symbol from it's internal number to the external number, moving
1934 all local symbols to be at the head of the list. */
1937 sym_is_global (abfd
, sym
)
1941 /* If the backend has a special mapping, use it. */
1942 if (get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
1943 return ((*get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
1946 return ((sym
->flags
& (BSF_GLOBAL
| BSF_WEAK
)) != 0
1947 || bfd_is_und_section (bfd_get_section (sym
))
1948 || bfd_is_com_section (bfd_get_section (sym
)));
1952 elf_map_symbols (abfd
)
1955 int symcount
= bfd_get_symcount (abfd
);
1956 asymbol
**syms
= bfd_get_outsymbols (abfd
);
1957 asymbol
**sect_syms
;
1959 int num_globals
= 0;
1960 int num_locals2
= 0;
1961 int num_globals2
= 0;
1963 int num_sections
= 0;
1970 fprintf (stderr
, "elf_map_symbols\n");
1974 /* Add a section symbol for each BFD section. FIXME: Is this really
1976 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
1978 if (max_index
< asect
->index
)
1979 max_index
= asect
->index
;
1983 sect_syms
= (asymbol
**) bfd_zalloc (abfd
, max_index
* sizeof (asymbol
*));
1984 if (sect_syms
== NULL
)
1986 elf_section_syms (abfd
) = sect_syms
;
1988 for (idx
= 0; idx
< symcount
; idx
++)
1992 if ((sym
->flags
& BSF_SECTION_SYM
) != 0
1999 if (sec
->owner
!= NULL
)
2001 if (sec
->owner
!= abfd
)
2003 if (sec
->output_offset
!= 0)
2006 sec
= sec
->output_section
;
2008 /* Empty sections in the input files may have had a section
2009 symbol created for them. (See the comment near the end of
2010 _bfd_generic_link_output_symbols in linker.c). If the linker
2011 script discards such sections then we will reach this point.
2012 Since we know that we cannot avoid this case, we detect it
2013 and skip the abort and the assignment to the sect_syms array.
2014 To reproduce this particular case try running the linker
2015 testsuite test ld-scripts/weak.exp for an ELF port that uses
2016 the generic linker. */
2017 if (sec
->owner
== NULL
)
2020 BFD_ASSERT (sec
->owner
== abfd
);
2022 sect_syms
[sec
->index
] = syms
[idx
];
2027 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2029 if (sect_syms
[asect
->index
] != NULL
)
2032 sym
= bfd_make_empty_symbol (abfd
);
2035 sym
->the_bfd
= abfd
;
2036 sym
->name
= asect
->name
;
2038 /* Set the flags to 0 to indicate that this one was newly added. */
2040 sym
->section
= asect
;
2041 sect_syms
[asect
->index
] = sym
;
2045 _("creating section symbol, name = %s, value = 0x%.8lx, index = %d, section = 0x%.8lx\n"),
2046 asect
->name
, (long) asect
->vma
, asect
->index
, (long) asect
);
2050 /* Classify all of the symbols. */
2051 for (idx
= 0; idx
< symcount
; idx
++)
2053 if (!sym_is_global (abfd
, syms
[idx
]))
2058 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2060 if (sect_syms
[asect
->index
] != NULL
2061 && sect_syms
[asect
->index
]->flags
== 0)
2063 sect_syms
[asect
->index
]->flags
= BSF_SECTION_SYM
;
2064 if (!sym_is_global (abfd
, sect_syms
[asect
->index
]))
2068 sect_syms
[asect
->index
]->flags
= 0;
2072 /* Now sort the symbols so the local symbols are first. */
2073 new_syms
= ((asymbol
**)
2075 (num_locals
+ num_globals
) * sizeof (asymbol
*)));
2076 if (new_syms
== NULL
)
2079 for (idx
= 0; idx
< symcount
; idx
++)
2081 asymbol
*sym
= syms
[idx
];
2084 if (!sym_is_global (abfd
, sym
))
2087 i
= num_locals
+ num_globals2
++;
2089 sym
->udata
.i
= i
+ 1;
2091 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2093 if (sect_syms
[asect
->index
] != NULL
2094 && sect_syms
[asect
->index
]->flags
== 0)
2096 asymbol
*sym
= sect_syms
[asect
->index
];
2099 sym
->flags
= BSF_SECTION_SYM
;
2100 if (!sym_is_global (abfd
, sym
))
2103 i
= num_locals
+ num_globals2
++;
2105 sym
->udata
.i
= i
+ 1;
2109 bfd_set_symtab (abfd
, new_syms
, num_locals
+ num_globals
);
2111 elf_num_locals (abfd
) = num_locals
;
2112 elf_num_globals (abfd
) = num_globals
;
2116 /* Align to the maximum file alignment that could be required for any
2117 ELF data structure. */
2119 static INLINE file_ptr align_file_position
PARAMS ((file_ptr
, int));
2120 static INLINE file_ptr
2121 align_file_position (off
, align
)
2125 return (off
+ align
- 1) & ~(align
- 1);
2128 /* Assign a file position to a section, optionally aligning to the
2129 required section alignment. */
2132 _bfd_elf_assign_file_position_for_section (i_shdrp
, offset
, align
)
2133 Elf_Internal_Shdr
*i_shdrp
;
2141 al
= i_shdrp
->sh_addralign
;
2143 offset
= BFD_ALIGN (offset
, al
);
2145 i_shdrp
->sh_offset
= offset
;
2146 if (i_shdrp
->bfd_section
!= NULL
)
2147 i_shdrp
->bfd_section
->filepos
= offset
;
2148 if (i_shdrp
->sh_type
!= SHT_NOBITS
)
2149 offset
+= i_shdrp
->sh_size
;
2153 /* Compute the file positions we are going to put the sections at, and
2154 otherwise prepare to begin writing out the ELF file. If LINK_INFO
2155 is not NULL, this is being called by the ELF backend linker. */
2158 _bfd_elf_compute_section_file_positions (abfd
, link_info
)
2160 struct bfd_link_info
*link_info
;
2162 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2164 struct bfd_strtab_hash
*strtab
;
2165 Elf_Internal_Shdr
*shstrtab_hdr
;
2167 if (abfd
->output_has_begun
)
2170 /* Do any elf backend specific processing first. */
2171 if (bed
->elf_backend_begin_write_processing
)
2172 (*bed
->elf_backend_begin_write_processing
) (abfd
, link_info
);
2174 if (! prep_headers (abfd
))
2177 /* Post process the headers if necessary. */
2178 if (bed
->elf_backend_post_process_headers
)
2179 (*bed
->elf_backend_post_process_headers
) (abfd
, link_info
);
2182 bfd_map_over_sections (abfd
, elf_fake_sections
, &failed
);
2186 if (!assign_section_numbers (abfd
))
2189 /* The backend linker builds symbol table information itself. */
2190 if (link_info
== NULL
&& bfd_get_symcount (abfd
) > 0)
2192 /* Non-zero if doing a relocatable link. */
2193 int relocatable_p
= ! (abfd
->flags
& (EXEC_P
| DYNAMIC
));
2195 if (! swap_out_syms (abfd
, &strtab
, relocatable_p
))
2199 shstrtab_hdr
= &elf_tdata (abfd
)->shstrtab_hdr
;
2200 /* sh_name was set in prep_headers. */
2201 shstrtab_hdr
->sh_type
= SHT_STRTAB
;
2202 shstrtab_hdr
->sh_flags
= 0;
2203 shstrtab_hdr
->sh_addr
= 0;
2204 shstrtab_hdr
->sh_size
= _bfd_stringtab_size (elf_shstrtab (abfd
));
2205 shstrtab_hdr
->sh_entsize
= 0;
2206 shstrtab_hdr
->sh_link
= 0;
2207 shstrtab_hdr
->sh_info
= 0;
2208 /* sh_offset is set in assign_file_positions_except_relocs. */
2209 shstrtab_hdr
->sh_addralign
= 1;
2211 if (!assign_file_positions_except_relocs (abfd
))
2214 if (link_info
== NULL
&& bfd_get_symcount (abfd
) > 0)
2217 Elf_Internal_Shdr
*hdr
;
2219 off
= elf_tdata (abfd
)->next_file_pos
;
2221 hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2222 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
2224 hdr
= &elf_tdata (abfd
)->strtab_hdr
;
2225 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
2227 elf_tdata (abfd
)->next_file_pos
= off
;
2229 /* Now that we know where the .strtab section goes, write it
2231 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
2232 || ! _bfd_stringtab_emit (abfd
, strtab
))
2234 _bfd_stringtab_free (strtab
);
2237 abfd
->output_has_begun
= true;
2242 /* Create a mapping from a set of sections to a program segment. */
2244 static INLINE
struct elf_segment_map
*
2245 make_mapping (abfd
, sections
, from
, to
, phdr
)
2247 asection
**sections
;
2252 struct elf_segment_map
*m
;
2256 m
= ((struct elf_segment_map
*)
2258 (sizeof (struct elf_segment_map
)
2259 + (to
- from
- 1) * sizeof (asection
*))));
2263 m
->p_type
= PT_LOAD
;
2264 for (i
= from
, hdrpp
= sections
+ from
; i
< to
; i
++, hdrpp
++)
2265 m
->sections
[i
- from
] = *hdrpp
;
2266 m
->count
= to
- from
;
2268 if (from
== 0 && phdr
)
2270 /* Include the headers in the first PT_LOAD segment. */
2271 m
->includes_filehdr
= 1;
2272 m
->includes_phdrs
= 1;
2278 /* Set up a mapping from BFD sections to program segments. */
2281 map_sections_to_segments (abfd
)
2284 asection
**sections
= NULL
;
2288 struct elf_segment_map
*mfirst
;
2289 struct elf_segment_map
**pm
;
2290 struct elf_segment_map
*m
;
2292 unsigned int phdr_index
;
2293 bfd_vma maxpagesize
;
2295 boolean phdr_in_segment
= true;
2299 if (elf_tdata (abfd
)->segment_map
!= NULL
)
2302 if (bfd_count_sections (abfd
) == 0)
2305 /* Select the allocated sections, and sort them. */
2307 sections
= (asection
**) bfd_malloc (bfd_count_sections (abfd
)
2308 * sizeof (asection
*));
2309 if (sections
== NULL
)
2313 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
2315 if ((s
->flags
& SEC_ALLOC
) != 0)
2321 BFD_ASSERT (i
<= bfd_count_sections (abfd
));
2324 qsort (sections
, (size_t) count
, sizeof (asection
*), elf_sort_sections
);
2326 /* Build the mapping. */
2331 /* If we have a .interp section, then create a PT_PHDR segment for
2332 the program headers and a PT_INTERP segment for the .interp
2334 s
= bfd_get_section_by_name (abfd
, ".interp");
2335 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
2337 m
= ((struct elf_segment_map
*)
2338 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
)));
2342 m
->p_type
= PT_PHDR
;
2343 /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */
2344 m
->p_flags
= PF_R
| PF_X
;
2345 m
->p_flags_valid
= 1;
2346 m
->includes_phdrs
= 1;
2351 m
= ((struct elf_segment_map
*)
2352 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
)));
2356 m
->p_type
= PT_INTERP
;
2364 /* Look through the sections. We put sections in the same program
2365 segment when the start of the second section can be placed within
2366 a few bytes of the end of the first section. */
2369 maxpagesize
= get_elf_backend_data (abfd
)->maxpagesize
;
2371 dynsec
= bfd_get_section_by_name (abfd
, ".dynamic");
2373 && (dynsec
->flags
& SEC_LOAD
) == 0)
2376 /* Deal with -Ttext or something similar such that the first section
2377 is not adjacent to the program headers. This is an
2378 approximation, since at this point we don't know exactly how many
2379 program headers we will need. */
2382 bfd_size_type phdr_size
;
2384 phdr_size
= elf_tdata (abfd
)->program_header_size
;
2386 phdr_size
= get_elf_backend_data (abfd
)->s
->sizeof_phdr
;
2387 if ((abfd
->flags
& D_PAGED
) == 0
2388 || sections
[0]->lma
< phdr_size
2389 || sections
[0]->lma
% maxpagesize
< phdr_size
% maxpagesize
)
2390 phdr_in_segment
= false;
2393 for (i
= 0, hdrpp
= sections
; i
< count
; i
++, hdrpp
++)
2396 boolean new_segment
;
2400 /* See if this section and the last one will fit in the same
2403 if (last_hdr
== NULL
)
2405 /* If we don't have a segment yet, then we don't need a new
2406 one (we build the last one after this loop). */
2407 new_segment
= false;
2409 else if (last_hdr
->lma
- last_hdr
->vma
!= hdr
->lma
- hdr
->vma
)
2411 /* If this section has a different relation between the
2412 virtual address and the load address, then we need a new
2416 else if (BFD_ALIGN (last_hdr
->lma
+ last_hdr
->_raw_size
, maxpagesize
)
2417 < BFD_ALIGN (hdr
->lma
, maxpagesize
))
2419 /* If putting this section in this segment would force us to
2420 skip a page in the segment, then we need a new segment. */
2423 else if ((last_hdr
->flags
& SEC_LOAD
) == 0
2424 && (hdr
->flags
& SEC_LOAD
) != 0)
2426 /* We don't want to put a loadable section after a
2427 nonloadable section in the same segment. */
2430 else if ((abfd
->flags
& D_PAGED
) == 0)
2432 /* If the file is not demand paged, which means that we
2433 don't require the sections to be correctly aligned in the
2434 file, then there is no other reason for a new segment. */
2435 new_segment
= false;
2438 && (hdr
->flags
& SEC_READONLY
) == 0
2439 && (BFD_ALIGN (last_hdr
->lma
+ last_hdr
->_raw_size
, maxpagesize
)
2442 /* We don't want to put a writable section in a read only
2443 segment, unless they are on the same page in memory
2444 anyhow. We already know that the last section does not
2445 bring us past the current section on the page, so the
2446 only case in which the new section is not on the same
2447 page as the previous section is when the previous section
2448 ends precisely on a page boundary. */
2453 /* Otherwise, we can use the same segment. */
2454 new_segment
= false;
2459 if ((hdr
->flags
& SEC_READONLY
) == 0)
2465 /* We need a new program segment. We must create a new program
2466 header holding all the sections from phdr_index until hdr. */
2468 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_segment
);
2475 if ((hdr
->flags
& SEC_READONLY
) == 0)
2482 phdr_in_segment
= false;
2485 /* Create a final PT_LOAD program segment. */
2486 if (last_hdr
!= NULL
)
2488 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_segment
);
2496 /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */
2499 m
= ((struct elf_segment_map
*)
2500 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
)));
2504 m
->p_type
= PT_DYNAMIC
;
2506 m
->sections
[0] = dynsec
;
2512 /* For each loadable .note section, add a PT_NOTE segment. We don't
2513 use bfd_get_section_by_name, because if we link together
2514 nonloadable .note sections and loadable .note sections, we will
2515 generate two .note sections in the output file. FIXME: Using
2516 names for section types is bogus anyhow. */
2517 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
2519 if ((s
->flags
& SEC_LOAD
) != 0
2520 && strncmp (s
->name
, ".note", 5) == 0)
2522 m
= ((struct elf_segment_map
*)
2523 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
)));
2527 m
->p_type
= PT_NOTE
;
2539 elf_tdata (abfd
)->segment_map
= mfirst
;
2543 if (sections
!= NULL
)
2548 /* Sort sections by address. */
2551 elf_sort_sections (arg1
, arg2
)
2555 const asection
*sec1
= *(const asection
**) arg1
;
2556 const asection
*sec2
= *(const asection
**) arg2
;
2558 /* Sort by LMA first, since this is the address used to
2559 place the section into a segment. */
2560 if (sec1
->lma
< sec2
->lma
)
2562 else if (sec1
->lma
> sec2
->lma
)
2565 /* Then sort by VMA. Normally the LMA and the VMA will be
2566 the same, and this will do nothing. */
2567 if (sec1
->vma
< sec2
->vma
)
2569 else if (sec1
->vma
> sec2
->vma
)
2572 /* Put !SEC_LOAD sections after SEC_LOAD ones. */
2574 #define TOEND(x) (((x)->flags & SEC_LOAD) == 0)
2579 return sec1
->target_index
- sec2
->target_index
;
2589 /* Sort by size, to put zero sized sections before others at the
2592 if (sec1
->_raw_size
< sec2
->_raw_size
)
2594 if (sec1
->_raw_size
> sec2
->_raw_size
)
2597 return sec1
->target_index
- sec2
->target_index
;
2600 /* Assign file positions to the sections based on the mapping from
2601 sections to segments. This function also sets up some fields in
2602 the file header, and writes out the program headers. */
2605 assign_file_positions_for_segments (abfd
)
2608 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2610 struct elf_segment_map
*m
;
2612 Elf_Internal_Phdr
*phdrs
;
2614 bfd_vma filehdr_vaddr
, filehdr_paddr
;
2615 bfd_vma phdrs_vaddr
, phdrs_paddr
;
2616 Elf_Internal_Phdr
*p
;
2618 if (elf_tdata (abfd
)->segment_map
== NULL
)
2620 if (! map_sections_to_segments (abfd
))
2624 if (bed
->elf_backend_modify_segment_map
)
2626 if (! (*bed
->elf_backend_modify_segment_map
) (abfd
))
2631 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
2634 elf_elfheader (abfd
)->e_phoff
= bed
->s
->sizeof_ehdr
;
2635 elf_elfheader (abfd
)->e_phentsize
= bed
->s
->sizeof_phdr
;
2636 elf_elfheader (abfd
)->e_phnum
= count
;
2641 /* If we already counted the number of program segments, make sure
2642 that we allocated enough space. This happens when SIZEOF_HEADERS
2643 is used in a linker script. */
2644 alloc
= elf_tdata (abfd
)->program_header_size
/ bed
->s
->sizeof_phdr
;
2645 if (alloc
!= 0 && count
> alloc
)
2647 ((*_bfd_error_handler
)
2648 (_("%s: Not enough room for program headers (allocated %u, need %u)"),
2649 bfd_get_filename (abfd
), alloc
, count
));
2650 bfd_set_error (bfd_error_bad_value
);
2657 phdrs
= ((Elf_Internal_Phdr
*)
2658 bfd_alloc (abfd
, alloc
* sizeof (Elf_Internal_Phdr
)));
2662 off
= bed
->s
->sizeof_ehdr
;
2663 off
+= alloc
* bed
->s
->sizeof_phdr
;
2670 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
2677 /* If elf_segment_map is not from map_sections_to_segments, the
2678 sections may not be correctly ordered. */
2680 qsort (m
->sections
, (size_t) m
->count
, sizeof (asection
*),
2683 p
->p_type
= m
->p_type
;
2684 p
->p_flags
= m
->p_flags
;
2686 if (p
->p_type
== PT_LOAD
2688 && (m
->sections
[0]->flags
& SEC_ALLOC
) != 0)
2690 if ((abfd
->flags
& D_PAGED
) != 0)
2691 off
+= (m
->sections
[0]->vma
- off
) % bed
->maxpagesize
;
2694 bfd_size_type align
;
2697 for (i
= 0, secpp
= m
->sections
; i
< m
->count
; i
++, secpp
++)
2699 bfd_size_type secalign
;
2701 secalign
= bfd_get_section_alignment (abfd
, *secpp
);
2702 if (secalign
> align
)
2706 off
+= (m
->sections
[0]->vma
- off
) % (1 << align
);
2713 p
->p_vaddr
= m
->sections
[0]->vma
;
2715 if (m
->p_paddr_valid
)
2716 p
->p_paddr
= m
->p_paddr
;
2717 else if (m
->count
== 0)
2720 p
->p_paddr
= m
->sections
[0]->lma
;
2722 if (p
->p_type
== PT_LOAD
2723 && (abfd
->flags
& D_PAGED
) != 0)
2724 p
->p_align
= bed
->maxpagesize
;
2725 else if (m
->count
== 0)
2726 p
->p_align
= bed
->s
->file_align
;
2734 if (m
->includes_filehdr
)
2736 if (! m
->p_flags_valid
)
2739 p
->p_filesz
= bed
->s
->sizeof_ehdr
;
2740 p
->p_memsz
= bed
->s
->sizeof_ehdr
;
2743 BFD_ASSERT (p
->p_type
== PT_LOAD
);
2745 if (p
->p_vaddr
< (bfd_vma
) off
)
2747 _bfd_error_handler (_("%s: Not enough room for program headers, try linking with -N"),
2748 bfd_get_filename (abfd
));
2749 bfd_set_error (bfd_error_bad_value
);
2754 if (! m
->p_paddr_valid
)
2757 if (p
->p_type
== PT_LOAD
)
2759 filehdr_vaddr
= p
->p_vaddr
;
2760 filehdr_paddr
= p
->p_paddr
;
2764 if (m
->includes_phdrs
)
2766 if (! m
->p_flags_valid
)
2769 if (m
->includes_filehdr
)
2771 if (p
->p_type
== PT_LOAD
)
2773 phdrs_vaddr
= p
->p_vaddr
+ bed
->s
->sizeof_ehdr
;
2774 phdrs_paddr
= p
->p_paddr
+ bed
->s
->sizeof_ehdr
;
2779 p
->p_offset
= bed
->s
->sizeof_ehdr
;
2783 BFD_ASSERT (p
->p_type
== PT_LOAD
);
2784 p
->p_vaddr
-= off
- p
->p_offset
;
2785 if (! m
->p_paddr_valid
)
2786 p
->p_paddr
-= off
- p
->p_offset
;
2789 if (p
->p_type
== PT_LOAD
)
2791 phdrs_vaddr
= p
->p_vaddr
;
2792 phdrs_paddr
= p
->p_paddr
;
2795 phdrs_vaddr
= bed
->maxpagesize
+ bed
->s
->sizeof_ehdr
;
2798 p
->p_filesz
+= alloc
* bed
->s
->sizeof_phdr
;
2799 p
->p_memsz
+= alloc
* bed
->s
->sizeof_phdr
;
2802 if (p
->p_type
== PT_LOAD
2803 || (p
->p_type
== PT_NOTE
&& bfd_get_format (abfd
) == bfd_core
))
2805 if (! m
->includes_filehdr
&& ! m
->includes_phdrs
)
2811 adjust
= off
- (p
->p_offset
+ p
->p_filesz
);
2812 p
->p_filesz
+= adjust
;
2813 p
->p_memsz
+= adjust
;
2819 for (i
= 0, secpp
= m
->sections
; i
< m
->count
; i
++, secpp
++)
2823 bfd_size_type align
;
2827 align
= 1 << bfd_get_section_alignment (abfd
, sec
);
2829 /* The section may have artificial alignment forced by a
2830 link script. Notice this case by the gap between the
2831 cumulative phdr vma and the section's vma. */
2832 if (p
->p_vaddr
+ p
->p_memsz
< sec
->vma
)
2834 bfd_vma adjust
= sec
->vma
- (p
->p_vaddr
+ p
->p_memsz
);
2836 p
->p_memsz
+= adjust
;
2839 if ((flags
& SEC_LOAD
) != 0)
2840 p
->p_filesz
+= adjust
;
2843 if (p
->p_type
== PT_LOAD
)
2845 bfd_signed_vma adjust
;
2847 if ((flags
& SEC_LOAD
) != 0)
2849 adjust
= sec
->lma
- (p
->p_paddr
+ p
->p_memsz
);
2853 else if ((flags
& SEC_ALLOC
) != 0)
2855 /* The section VMA must equal the file position
2856 modulo the page size. FIXME: I'm not sure if
2857 this adjustment is really necessary. We used to
2858 not have the SEC_LOAD case just above, and then
2859 this was necessary, but now I'm not sure. */
2860 if ((abfd
->flags
& D_PAGED
) != 0)
2861 adjust
= (sec
->vma
- voff
) % bed
->maxpagesize
;
2863 adjust
= (sec
->vma
- voff
) % align
;
2872 (* _bfd_error_handler
)
2873 (_("Error: First section in segment (%s) starts at 0x%x"),
2874 bfd_section_name (abfd
, sec
), sec
->lma
);
2875 (* _bfd_error_handler
)
2876 (_(" whereas segment starts at 0x%x"),
2881 p
->p_memsz
+= adjust
;
2884 if ((flags
& SEC_LOAD
) != 0)
2885 p
->p_filesz
+= adjust
;
2890 /* We check SEC_HAS_CONTENTS here because if NOLOAD is
2891 used in a linker script we may have a section with
2892 SEC_LOAD clear but which is supposed to have
2894 if ((flags
& SEC_LOAD
) != 0
2895 || (flags
& SEC_HAS_CONTENTS
) != 0)
2896 off
+= sec
->_raw_size
;
2898 if ((flags
& SEC_ALLOC
) != 0)
2899 voff
+= sec
->_raw_size
;
2902 if (p
->p_type
== PT_NOTE
&& bfd_get_format (abfd
) == bfd_core
)
2904 if (i
== 0) /* the actual "note" segment */
2905 { /* this one actually contains everything. */
2907 p
->p_filesz
= sec
->_raw_size
;
2908 off
+= sec
->_raw_size
;
2911 else /* fake sections -- don't need to be written */
2915 flags
= sec
->flags
= 0; /* no contents */
2922 p
->p_memsz
+= sec
->_raw_size
;
2924 if ((flags
& SEC_LOAD
) != 0)
2925 p
->p_filesz
+= sec
->_raw_size
;
2927 if (align
> p
->p_align
2928 && (p
->p_type
!= PT_LOAD
|| (abfd
->flags
& D_PAGED
) == 0))
2932 if (! m
->p_flags_valid
)
2935 if ((flags
& SEC_CODE
) != 0)
2937 if ((flags
& SEC_READONLY
) == 0)
2943 /* Now that we have set the section file positions, we can set up
2944 the file positions for the non PT_LOAD segments. */
2945 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
2949 if (p
->p_type
!= PT_LOAD
&& m
->count
> 0)
2951 BFD_ASSERT (! m
->includes_filehdr
&& ! m
->includes_phdrs
);
2952 p
->p_offset
= m
->sections
[0]->filepos
;
2956 if (m
->includes_filehdr
)
2958 p
->p_vaddr
= filehdr_vaddr
;
2959 if (! m
->p_paddr_valid
)
2960 p
->p_paddr
= filehdr_paddr
;
2962 else if (m
->includes_phdrs
)
2964 p
->p_vaddr
= phdrs_vaddr
;
2965 if (! m
->p_paddr_valid
)
2966 p
->p_paddr
= phdrs_paddr
;
2971 /* Clear out any program headers we allocated but did not use. */
2972 for (; count
< alloc
; count
++, p
++)
2974 memset (p
, 0, sizeof *p
);
2975 p
->p_type
= PT_NULL
;
2978 elf_tdata (abfd
)->phdr
= phdrs
;
2980 elf_tdata (abfd
)->next_file_pos
= off
;
2982 /* Write out the program headers. */
2983 if (bfd_seek (abfd
, bed
->s
->sizeof_ehdr
, SEEK_SET
) != 0
2984 || bed
->s
->write_out_phdrs (abfd
, phdrs
, alloc
) != 0)
2990 /* Get the size of the program header.
2992 If this is called by the linker before any of the section VMA's are set, it
2993 can't calculate the correct value for a strange memory layout. This only
2994 happens when SIZEOF_HEADERS is used in a linker script. In this case,
2995 SORTED_HDRS is NULL and we assume the normal scenario of one text and one
2996 data segment (exclusive of .interp and .dynamic).
2998 ??? User written scripts must either not use SIZEOF_HEADERS, or assume there
2999 will be two segments. */
3001 static bfd_size_type
3002 get_program_header_size (abfd
)
3007 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3009 /* We can't return a different result each time we're called. */
3010 if (elf_tdata (abfd
)->program_header_size
!= 0)
3011 return elf_tdata (abfd
)->program_header_size
;
3013 if (elf_tdata (abfd
)->segment_map
!= NULL
)
3015 struct elf_segment_map
*m
;
3018 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
3020 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
3021 return elf_tdata (abfd
)->program_header_size
;
3024 /* Assume we will need exactly two PT_LOAD segments: one for text
3025 and one for data. */
3028 s
= bfd_get_section_by_name (abfd
, ".interp");
3029 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
3031 /* If we have a loadable interpreter section, we need a
3032 PT_INTERP segment. In this case, assume we also need a
3033 PT_PHDR segment, although that may not be true for all
3038 if (bfd_get_section_by_name (abfd
, ".dynamic") != NULL
)
3040 /* We need a PT_DYNAMIC segment. */
3044 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
3046 if ((s
->flags
& SEC_LOAD
) != 0
3047 && strncmp (s
->name
, ".note", 5) == 0)
3049 /* We need a PT_NOTE segment. */
3054 /* Let the backend count up any program headers it might need. */
3055 if (bed
->elf_backend_additional_program_headers
)
3059 a
= (*bed
->elf_backend_additional_program_headers
) (abfd
);
3065 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
3066 return elf_tdata (abfd
)->program_header_size
;
3069 /* Work out the file positions of all the sections. This is called by
3070 _bfd_elf_compute_section_file_positions. All the section sizes and
3071 VMAs must be known before this is called.
3073 We do not consider reloc sections at this point, unless they form
3074 part of the loadable image. Reloc sections are assigned file
3075 positions in assign_file_positions_for_relocs, which is called by
3076 write_object_contents and final_link.
3078 We also don't set the positions of the .symtab and .strtab here. */
3081 assign_file_positions_except_relocs (abfd
)
3084 struct elf_obj_tdata
* const tdata
= elf_tdata (abfd
);
3085 Elf_Internal_Ehdr
* const i_ehdrp
= elf_elfheader (abfd
);
3086 Elf_Internal_Shdr
** const i_shdrpp
= elf_elfsections (abfd
);
3088 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3090 if ((abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0
3091 && bfd_get_format (abfd
) != bfd_core
)
3093 Elf_Internal_Shdr
**hdrpp
;
3096 /* Start after the ELF header. */
3097 off
= i_ehdrp
->e_ehsize
;
3099 /* We are not creating an executable, which means that we are
3100 not creating a program header, and that the actual order of
3101 the sections in the file is unimportant. */
3102 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< i_ehdrp
->e_shnum
; i
++, hdrpp
++)
3104 Elf_Internal_Shdr
*hdr
;
3107 if (hdr
->sh_type
== SHT_REL
|| hdr
->sh_type
== SHT_RELA
)
3109 hdr
->sh_offset
= -1;
3112 if (i
== tdata
->symtab_section
3113 || i
== tdata
->strtab_section
)
3115 hdr
->sh_offset
= -1;
3119 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
3125 Elf_Internal_Shdr
**hdrpp
;
3127 /* Assign file positions for the loaded sections based on the
3128 assignment of sections to segments. */
3129 if (! assign_file_positions_for_segments (abfd
))
3132 /* Assign file positions for the other sections. */
3134 off
= elf_tdata (abfd
)->next_file_pos
;
3135 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< i_ehdrp
->e_shnum
; i
++, hdrpp
++)
3137 Elf_Internal_Shdr
*hdr
;
3140 if (hdr
->bfd_section
!= NULL
3141 && hdr
->bfd_section
->filepos
!= 0)
3142 hdr
->sh_offset
= hdr
->bfd_section
->filepos
;
3143 else if ((hdr
->sh_flags
& SHF_ALLOC
) != 0)
3145 ((*_bfd_error_handler
)
3146 (_("%s: warning: allocated section `%s' not in segment"),
3147 bfd_get_filename (abfd
),
3148 (hdr
->bfd_section
== NULL
3150 : hdr
->bfd_section
->name
)));
3151 if ((abfd
->flags
& D_PAGED
) != 0)
3152 off
+= (hdr
->sh_addr
- off
) % bed
->maxpagesize
;
3154 off
+= (hdr
->sh_addr
- off
) % hdr
->sh_addralign
;
3155 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
,
3158 else if (hdr
->sh_type
== SHT_REL
3159 || hdr
->sh_type
== SHT_RELA
3160 || hdr
== i_shdrpp
[tdata
->symtab_section
]
3161 || hdr
== i_shdrpp
[tdata
->strtab_section
])
3162 hdr
->sh_offset
= -1;
3164 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
3168 /* Place the section headers. */
3169 off
= align_file_position (off
, bed
->s
->file_align
);
3170 i_ehdrp
->e_shoff
= off
;
3171 off
+= i_ehdrp
->e_shnum
* i_ehdrp
->e_shentsize
;
3173 elf_tdata (abfd
)->next_file_pos
= off
;
3182 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
3183 Elf_Internal_Phdr
*i_phdrp
= 0; /* Program header table, internal form */
3184 Elf_Internal_Shdr
**i_shdrp
; /* Section header table, internal form */
3186 struct bfd_strtab_hash
*shstrtab
;
3187 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3189 i_ehdrp
= elf_elfheader (abfd
);
3190 i_shdrp
= elf_elfsections (abfd
);
3192 shstrtab
= _bfd_elf_stringtab_init ();
3193 if (shstrtab
== NULL
)
3196 elf_shstrtab (abfd
) = shstrtab
;
3198 i_ehdrp
->e_ident
[EI_MAG0
] = ELFMAG0
;
3199 i_ehdrp
->e_ident
[EI_MAG1
] = ELFMAG1
;
3200 i_ehdrp
->e_ident
[EI_MAG2
] = ELFMAG2
;
3201 i_ehdrp
->e_ident
[EI_MAG3
] = ELFMAG3
;
3203 i_ehdrp
->e_ident
[EI_CLASS
] = bed
->s
->elfclass
;
3204 i_ehdrp
->e_ident
[EI_DATA
] =
3205 bfd_big_endian (abfd
) ? ELFDATA2MSB
: ELFDATA2LSB
;
3206 i_ehdrp
->e_ident
[EI_VERSION
] = bed
->s
->ev_current
;
3208 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_SYSV
;
3209 i_ehdrp
->e_ident
[EI_ABIVERSION
] = 0;
3211 for (count
= EI_PAD
; count
< EI_NIDENT
; count
++)
3212 i_ehdrp
->e_ident
[count
] = 0;
3214 if ((abfd
->flags
& DYNAMIC
) != 0)
3215 i_ehdrp
->e_type
= ET_DYN
;
3216 else if ((abfd
->flags
& EXEC_P
) != 0)
3217 i_ehdrp
->e_type
= ET_EXEC
;
3218 else if (bfd_get_format (abfd
) == bfd_core
)
3219 i_ehdrp
->e_type
= ET_CORE
;
3221 i_ehdrp
->e_type
= ET_REL
;
3223 switch (bfd_get_arch (abfd
))
3225 case bfd_arch_unknown
:
3226 i_ehdrp
->e_machine
= EM_NONE
;
3228 case bfd_arch_sparc
:
3229 if (bed
->s
->arch_size
== 64)
3230 i_ehdrp
->e_machine
= EM_SPARCV9
;
3232 i_ehdrp
->e_machine
= EM_SPARC
;
3235 i_ehdrp
->e_machine
= EM_S370
;
3238 i_ehdrp
->e_machine
= EM_386
;
3241 i_ehdrp
->e_machine
= EM_68K
;
3244 i_ehdrp
->e_machine
= EM_88K
;
3247 i_ehdrp
->e_machine
= EM_860
;
3250 i_ehdrp
->e_machine
= EM_960
;
3252 case bfd_arch_mips
: /* MIPS Rxxxx */
3253 i_ehdrp
->e_machine
= EM_MIPS
; /* only MIPS R3000 */
3256 i_ehdrp
->e_machine
= EM_PARISC
;
3258 case bfd_arch_powerpc
:
3259 i_ehdrp
->e_machine
= EM_PPC
;
3261 case bfd_arch_alpha
:
3262 i_ehdrp
->e_machine
= EM_ALPHA
;
3265 i_ehdrp
->e_machine
= EM_SH
;
3268 i_ehdrp
->e_machine
= EM_CYGNUS_D10V
;
3271 i_ehdrp
->e_machine
= EM_CYGNUS_D30V
;
3274 i_ehdrp
->e_machine
= EM_CYGNUS_FR30
;
3276 case bfd_arch_mcore
:
3277 i_ehdrp
->e_machine
= EM_MCORE
;
3280 switch (bfd_get_mach (abfd
))
3283 case 0: i_ehdrp
->e_machine
= EM_CYGNUS_V850
; break;
3287 i_ehdrp
->e_machine
= EM_CYGNUS_ARC
;
3290 i_ehdrp
->e_machine
= EM_ARM
;
3293 i_ehdrp
->e_machine
= EM_CYGNUS_M32R
;
3295 case bfd_arch_mn10200
:
3296 i_ehdrp
->e_machine
= EM_CYGNUS_MN10200
;
3298 case bfd_arch_mn10300
:
3299 i_ehdrp
->e_machine
= EM_CYGNUS_MN10300
;
3302 i_ehdrp
->e_machine
= EM_PJ
;
3304 /* also note that EM_M32, AT&T WE32100 is unknown to bfd */
3306 i_ehdrp
->e_machine
= EM_NONE
;
3308 i_ehdrp
->e_version
= bed
->s
->ev_current
;
3309 i_ehdrp
->e_ehsize
= bed
->s
->sizeof_ehdr
;
3311 /* no program header, for now. */
3312 i_ehdrp
->e_phoff
= 0;
3313 i_ehdrp
->e_phentsize
= 0;
3314 i_ehdrp
->e_phnum
= 0;
3316 /* each bfd section is section header entry */
3317 i_ehdrp
->e_entry
= bfd_get_start_address (abfd
);
3318 i_ehdrp
->e_shentsize
= bed
->s
->sizeof_shdr
;
3320 /* if we're building an executable, we'll need a program header table */
3321 if (abfd
->flags
& EXEC_P
)
3323 /* it all happens later */
3325 i_ehdrp
->e_phentsize
= sizeof (Elf_External_Phdr
);
3327 /* elf_build_phdrs() returns a (NULL-terminated) array of
3328 Elf_Internal_Phdrs */
3329 i_phdrp
= elf_build_phdrs (abfd
, i_ehdrp
, i_shdrp
, &i_ehdrp
->e_phnum
);
3330 i_ehdrp
->e_phoff
= outbase
;
3331 outbase
+= i_ehdrp
->e_phentsize
* i_ehdrp
->e_phnum
;
3336 i_ehdrp
->e_phentsize
= 0;
3338 i_ehdrp
->e_phoff
= 0;
3341 elf_tdata (abfd
)->symtab_hdr
.sh_name
=
3342 (unsigned int) _bfd_stringtab_add (shstrtab
, ".symtab", true, false);
3343 elf_tdata (abfd
)->strtab_hdr
.sh_name
=
3344 (unsigned int) _bfd_stringtab_add (shstrtab
, ".strtab", true, false);
3345 elf_tdata (abfd
)->shstrtab_hdr
.sh_name
=
3346 (unsigned int) _bfd_stringtab_add (shstrtab
, ".shstrtab", true, false);
3347 if (elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
3348 || elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
3349 || elf_tdata (abfd
)->shstrtab_hdr
.sh_name
== (unsigned int) -1)
3355 /* Assign file positions for all the reloc sections which are not part
3356 of the loadable file image. */
3359 _bfd_elf_assign_file_positions_for_relocs (abfd
)
3364 Elf_Internal_Shdr
**shdrpp
;
3366 off
= elf_tdata (abfd
)->next_file_pos
;
3368 for (i
= 1, shdrpp
= elf_elfsections (abfd
) + 1;
3369 i
< elf_elfheader (abfd
)->e_shnum
;
3372 Elf_Internal_Shdr
*shdrp
;
3375 if ((shdrp
->sh_type
== SHT_REL
|| shdrp
->sh_type
== SHT_RELA
)
3376 && shdrp
->sh_offset
== -1)
3377 off
= _bfd_elf_assign_file_position_for_section (shdrp
, off
, true);
3380 elf_tdata (abfd
)->next_file_pos
= off
;
3384 _bfd_elf_write_object_contents (abfd
)
3387 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3388 Elf_Internal_Ehdr
*i_ehdrp
;
3389 Elf_Internal_Shdr
**i_shdrp
;
3393 if (! abfd
->output_has_begun
3394 && ! _bfd_elf_compute_section_file_positions
3395 (abfd
, (struct bfd_link_info
*) NULL
))
3398 i_shdrp
= elf_elfsections (abfd
);
3399 i_ehdrp
= elf_elfheader (abfd
);
3402 bfd_map_over_sections (abfd
, bed
->s
->write_relocs
, &failed
);
3406 _bfd_elf_assign_file_positions_for_relocs (abfd
);
3408 /* After writing the headers, we need to write the sections too... */
3409 for (count
= 1; count
< i_ehdrp
->e_shnum
; count
++)
3411 if (bed
->elf_backend_section_processing
)
3412 (*bed
->elf_backend_section_processing
) (abfd
, i_shdrp
[count
]);
3413 if (i_shdrp
[count
]->contents
)
3415 if (bfd_seek (abfd
, i_shdrp
[count
]->sh_offset
, SEEK_SET
) != 0
3416 || (bfd_write (i_shdrp
[count
]->contents
, i_shdrp
[count
]->sh_size
,
3418 != i_shdrp
[count
]->sh_size
))
3423 /* Write out the section header names. */
3424 if (bfd_seek (abfd
, elf_tdata (abfd
)->shstrtab_hdr
.sh_offset
, SEEK_SET
) != 0
3425 || ! _bfd_stringtab_emit (abfd
, elf_shstrtab (abfd
)))
3428 if (bed
->elf_backend_final_write_processing
)
3429 (*bed
->elf_backend_final_write_processing
) (abfd
,
3430 elf_tdata (abfd
)->linker
);
3432 return bed
->s
->write_shdrs_and_ehdr (abfd
);
3436 _bfd_elf_write_corefile_contents (abfd
)
3439 /* Hopefully this can be done just like an object file. */
3440 return _bfd_elf_write_object_contents (abfd
);
3442 /* given a section, search the header to find them... */
3444 _bfd_elf_section_from_bfd_section (abfd
, asect
)
3448 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3449 Elf_Internal_Shdr
**i_shdrp
= elf_elfsections (abfd
);
3451 Elf_Internal_Shdr
*hdr
;
3452 int maxindex
= elf_elfheader (abfd
)->e_shnum
;
3454 for (index
= 0; index
< maxindex
; index
++)
3456 hdr
= i_shdrp
[index
];
3457 if (hdr
->bfd_section
== asect
)
3461 if (bed
->elf_backend_section_from_bfd_section
)
3463 for (index
= 0; index
< maxindex
; index
++)
3467 hdr
= i_shdrp
[index
];
3469 if ((*bed
->elf_backend_section_from_bfd_section
)
3470 (abfd
, hdr
, asect
, &retval
))
3475 if (bfd_is_abs_section (asect
))
3477 if (bfd_is_com_section (asect
))
3479 if (bfd_is_und_section (asect
))
3482 bfd_set_error (bfd_error_nonrepresentable_section
);
3487 /* Given a BFD symbol, return the index in the ELF symbol table, or -1
3491 _bfd_elf_symbol_from_bfd_symbol (abfd
, asym_ptr_ptr
)
3493 asymbol
**asym_ptr_ptr
;
3495 asymbol
*asym_ptr
= *asym_ptr_ptr
;
3497 flagword flags
= asym_ptr
->flags
;
3499 /* When gas creates relocations against local labels, it creates its
3500 own symbol for the section, but does put the symbol into the
3501 symbol chain, so udata is 0. When the linker is generating
3502 relocatable output, this section symbol may be for one of the
3503 input sections rather than the output section. */
3504 if (asym_ptr
->udata
.i
== 0
3505 && (flags
& BSF_SECTION_SYM
)
3506 && asym_ptr
->section
)
3510 if (asym_ptr
->section
->output_section
!= NULL
)
3511 indx
= asym_ptr
->section
->output_section
->index
;
3513 indx
= asym_ptr
->section
->index
;
3514 if (elf_section_syms (abfd
)[indx
])
3515 asym_ptr
->udata
.i
= elf_section_syms (abfd
)[indx
]->udata
.i
;
3518 idx
= asym_ptr
->udata
.i
;
3522 /* This case can occur when using --strip-symbol on a symbol
3523 which is used in a relocation entry. */
3524 (*_bfd_error_handler
)
3525 (_("%s: symbol `%s' required but not present"),
3526 bfd_get_filename (abfd
), bfd_asymbol_name (asym_ptr
));
3527 bfd_set_error (bfd_error_no_symbols
);
3534 _("elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n"),
3535 (long) asym_ptr
, asym_ptr
->name
, idx
, flags
,
3536 elf_symbol_flags (flags
));
3544 /* Copy private BFD data. This copies any program header information. */
3547 copy_private_bfd_data (ibfd
, obfd
)
3551 Elf_Internal_Ehdr
*iehdr
;
3552 struct elf_segment_map
*mfirst
;
3553 struct elf_segment_map
**pm
;
3554 struct elf_segment_map
*m
;
3555 Elf_Internal_Phdr
*p
;
3557 unsigned int num_segments
;
3558 boolean phdr_included
= false;
3560 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
3561 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
3564 if (elf_tdata (ibfd
)->phdr
== NULL
)
3567 iehdr
= elf_elfheader (ibfd
);
3572 num_segments
= elf_elfheader (ibfd
)->e_phnum
;
3574 #define IS_CONTAINED_BY(addr, len, bottom, phdr) \
3575 ((addr) >= (bottom) \
3576 && ( ((addr) + (len)) <= ((bottom) + (phdr)->p_memsz) \
3577 || ((addr) + (len)) <= ((bottom) + (phdr)->p_filesz)))
3579 /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */
3581 #define IS_COREFILE_NOTE(p, s) \
3582 (p->p_type == PT_NOTE \
3583 && bfd_get_format (ibfd) == bfd_core \
3584 && s->vma == 0 && s->lma == 0 \
3585 && (bfd_vma) s->filepos >= p->p_offset \
3586 && (bfd_vma) s->filepos + s->_raw_size \
3587 <= p->p_offset + p->p_filesz)
3589 /* The complicated case when p_vaddr is 0 is to handle the Solaris
3590 linker, which generates a PT_INTERP section with p_vaddr and
3591 p_memsz set to 0. */
3593 #define IS_SOLARIS_PT_INTERP(p, s) \
3595 && p->p_filesz > 0 \
3596 && (s->flags & SEC_HAS_CONTENTS) != 0 \
3597 && s->_raw_size > 0 \
3598 && (bfd_vma) s->filepos >= p->p_offset \
3599 && ((bfd_vma) s->filepos + s->_raw_size \
3600 <= p->p_offset + p->p_filesz))
3602 /* Scan through the segments specified in the program header
3603 of the input BFD. */
3604 for (i
= 0, p
= elf_tdata (ibfd
)->phdr
; i
< num_segments
; i
++, p
++)
3608 asection
**sections
;
3611 bfd_vma matching_lma
;
3612 bfd_vma suggested_lma
;
3615 /* For each section in the input BFD, decide if it should be
3616 included in the current segment. A section will be included
3617 if it is within the address space of the segment, and it is
3618 an allocated segment, and there is an output section
3619 associated with it. */
3621 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
3622 if (s
->output_section
!= NULL
)
3624 if ((IS_CONTAINED_BY (s
->vma
, s
->_raw_size
, p
->p_vaddr
, p
)
3625 || IS_SOLARIS_PT_INTERP (p
, s
))
3626 && (s
->flags
& SEC_ALLOC
) != 0)
3628 else if (IS_COREFILE_NOTE (p
, s
))
3632 /* Allocate a segment map big enough to contain all of the
3633 sections we have selected. */
3634 m
= ((struct elf_segment_map
*)
3636 (sizeof (struct elf_segment_map
)
3637 + ((size_t) csecs
- 1) * sizeof (asection
*))));
3641 /* Initialise the fields of the segment map. Default to
3642 using the physical address of the segment in the input BFD. */
3644 m
->p_type
= p
->p_type
;
3645 m
->p_flags
= p
->p_flags
;
3646 m
->p_flags_valid
= 1;
3647 m
->p_paddr
= p
->p_paddr
;
3648 m
->p_paddr_valid
= 1;
3650 /* Determine if this segment contains the ELF file header
3651 and if it contains the program headers themselves. */
3652 m
->includes_filehdr
= (p
->p_offset
== 0
3653 && p
->p_filesz
>= iehdr
->e_ehsize
);
3655 m
->includes_phdrs
= 0;
3657 if (! phdr_included
|| p
->p_type
!= PT_LOAD
)
3660 (p
->p_offset
<= (bfd_vma
) iehdr
->e_phoff
3661 && (p
->p_offset
+ p
->p_filesz
3662 >= ((bfd_vma
) iehdr
->e_phoff
3663 + iehdr
->e_phnum
* iehdr
->e_phentsize
)));
3664 if (p
->p_type
== PT_LOAD
&& m
->includes_phdrs
)
3665 phdr_included
= true;
3670 /* Special segments, such as the PT_PHDR segment, may contain
3671 no sections, but ordinary, loadable segments should contain
3674 if (p
->p_type
== PT_LOAD
)
3676 (_("%s: warning: Empty loadable segment detected\n"),
3677 bfd_get_filename (ibfd
));
3686 /* Now scan the sections in the input BFD again and attempt
3687 to add their corresponding output sections to the segment map.
3688 The problem here is how to handle an output section which has
3689 been moved (ie had its LMA changed). There are four possibilities:
3691 1. None of the sections have been moved.
3692 In this case we can continue to use the segment LMA from the
3695 2. All of the sections have been moved by the same amount.
3696 In this case we can change the segment's LMA to match the LMA
3697 of the first section.
3699 3. Some of the sections have been moved, others have not.
3700 In this case those sections which have not been moved can be
3701 placed in the current segment which will have to have its size,
3702 and possibly its LMA changed, and a new segment or segments will
3703 have to be created to contain the other sections.
3705 4. The sections have been moved, but not be the same amount.
3706 In this case we can change the segment's LMA to match the LMA
3707 of the first section and we will have to create a new segment
3708 or segments to contain the other sections.
3710 In order to save time, we allocate an array to hold the section
3711 pointers that we are interested in. As these sections get assigned
3712 to a segment, they are removed from this array. */
3714 sections
= (asection
**) bfd_malloc (sizeof (asection
*) * csecs
);
3715 if (sections
== NULL
)
3718 /* Step One: Scan for segment vs section LMA conflicts.
3719 Also add the sections to the section array allocated above.
3720 Also add the sections to the current segment. In the common
3721 case, where the sections have not been moved, this means that
3722 we have completely filled the segment, and there is nothing
3726 matching_lma
= false;
3729 for (j
= 0, s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
3731 os
= s
->output_section
;
3733 if ((((IS_CONTAINED_BY (s
->vma
, s
->_raw_size
, p
->p_vaddr
, p
)
3734 || IS_SOLARIS_PT_INTERP (p
, s
))
3735 && (s
->flags
& SEC_ALLOC
) != 0)
3736 || IS_COREFILE_NOTE (p
, s
))
3741 /* The Solaris native linker always sets p_paddr to 0.
3742 We try to catch that case here, and set it to the
3748 && (os
->vma
== (p
->p_vaddr
3749 + (m
->includes_filehdr
3752 + (m
->includes_phdrs
3753 ? iehdr
->e_phnum
* iehdr
->e_phentsize
3755 m
->p_paddr
= p
->p_vaddr
;
3757 /* Match up the physical address of the segment with the
3758 LMA address of the output section. */
3759 if (IS_CONTAINED_BY (os
->lma
, os
->_raw_size
, m
->p_paddr
, p
)
3760 || IS_COREFILE_NOTE (p
, s
))
3762 if (matching_lma
== 0)
3763 matching_lma
= os
->lma
;
3765 /* We assume that if the section fits within the segment
3766 that it does not overlap any other section within that
3768 m
->sections
[isec
++] = os
;
3770 else if (suggested_lma
== 0)
3771 suggested_lma
= os
->lma
;
3775 BFD_ASSERT (j
== csecs
);
3777 /* Step Two: Adjust the physical address of the current segment,
3781 /* All of the sections fitted within the segment as currently
3782 specified. This is the default case. Add the segment to
3783 the list of built segments and carry on to process the next
3784 program header in the input BFD. */
3792 else if (matching_lma
!= 0)
3794 /* At least one section fits inside the current segment.
3795 Keep it, but modify its physical address to match the
3796 LMA of the first section that fitted. */
3798 m
->p_paddr
= matching_lma
;
3802 /* None of the sections fitted inside the current segment.
3803 Change the current segment's physical address to match
3804 the LMA of the first section. */
3806 m
->p_paddr
= suggested_lma
;
3809 /* Step Three: Loop over the sections again, this time assigning
3810 those that fit to the current segment and remvoing them from the
3811 sections array; but making sure not to leave large gaps. Once all
3812 possible sections have been assigned to the current segment it is
3813 added to the list of built segments and if sections still remain
3814 to be assigned, a new segment is constructed before repeating
3822 /* Fill the current segment with sections that fit. */
3823 for (j
= 0; j
< csecs
; j
++)
3830 os
= s
->output_section
;
3832 if (IS_CONTAINED_BY (os
->lma
, os
->_raw_size
, m
->p_paddr
, p
)
3833 || IS_COREFILE_NOTE (p
, s
))
3837 /* If the first section in a segment does not start at
3838 the beginning of the segment, then something is wrong. */
3839 if (os
->lma
!= m
->p_paddr
)
3844 asection
* prev_sec
;
3845 bfd_vma maxpagesize
;
3847 prev_sec
= m
->sections
[m
->count
- 1];
3848 maxpagesize
= get_elf_backend_data (obfd
)->maxpagesize
;
3850 /* If the gap between the end of the previous section
3851 and the start of this section is more than maxpagesize
3852 then we need to start a new segment. */
3853 if (BFD_ALIGN (prev_sec
->lma
+ prev_sec
->_raw_size
, maxpagesize
)
3854 < BFD_ALIGN (os
->lma
, maxpagesize
))
3856 if (suggested_lma
== 0)
3857 suggested_lma
= os
->lma
;
3863 m
->sections
[m
->count
++] = os
;
3867 else if (suggested_lma
== 0)
3868 suggested_lma
= os
->lma
;
3871 BFD_ASSERT (m
->count
> 0);
3873 /* Add the current segment to the list of built segments. */
3879 /* We still have not allocated all of the sections to
3880 segments. Create a new segment here, initialise it
3881 and carry on looping. */
3883 m
= ((struct elf_segment_map
*)
3885 (sizeof (struct elf_segment_map
)
3886 + ((size_t) csecs
- 1) * sizeof (asection
*))));
3890 /* Initialise the fields of the segment map. Set the physical
3891 physical address to the LMA of the first section that has
3892 not yet been assigned. */
3895 m
->p_type
= p
->p_type
;
3896 m
->p_flags
= p
->p_flags
;
3897 m
->p_flags_valid
= 1;
3898 m
->p_paddr
= suggested_lma
;
3899 m
->p_paddr_valid
= 1;
3900 m
->includes_filehdr
= 0;
3901 m
->includes_phdrs
= 0;
3904 while (isec
< csecs
);
3909 /* The Solaris linker creates program headers in which all the
3910 p_paddr fields are zero. When we try to objcopy or strip such a
3911 file, we get confused. Check for this case, and if we find it
3912 reset the p_paddr_valid fields. */
3913 for (m
= mfirst
; m
!= NULL
; m
= m
->next
)
3914 if (m
->p_paddr
!= 0)
3918 for (m
= mfirst
; m
!= NULL
; m
= m
->next
)
3919 m
->p_paddr_valid
= 0;
3922 elf_tdata (obfd
)->segment_map
= mfirst
;
3925 /* Final Step: Sort the segments into ascending order of physical address. */
3928 struct elf_segment_map
* prev
;
3931 for (m
= mfirst
->next
; m
!= NULL
; prev
= m
, m
= m
->next
)
3933 /* Yes I know - its a bubble sort....*/
3934 if (m
->next
!= NULL
&& (m
->next
->p_paddr
< m
->p_paddr
))
3936 /* swap m and m->next */
3937 prev
->next
= m
->next
;
3938 m
->next
= m
->next
->next
;
3939 prev
->next
->next
= m
;
3948 #undef IS_CONTAINED_BY
3949 #undef IS_SOLARIS_PT_INTERP
3950 #undef IS_COREFILE_NOTE
3954 /* Copy private section information. This copies over the entsize
3955 field, and sometimes the info field. */
3958 _bfd_elf_copy_private_section_data (ibfd
, isec
, obfd
, osec
)
3964 Elf_Internal_Shdr
*ihdr
, *ohdr
;
3966 if (ibfd
->xvec
->flavour
!= bfd_target_elf_flavour
3967 || obfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
3970 /* Copy over private BFD data if it has not already been copied.
3971 This must be done here, rather than in the copy_private_bfd_data
3972 entry point, because the latter is called after the section
3973 contents have been set, which means that the program headers have
3974 already been worked out. */
3975 if (elf_tdata (obfd
)->segment_map
== NULL
3976 && elf_tdata (ibfd
)->phdr
!= NULL
)
3980 /* Only set up the segments if there are no more SEC_ALLOC
3981 sections. FIXME: This won't do the right thing if objcopy is
3982 used to remove the last SEC_ALLOC section, since objcopy
3983 won't call this routine in that case. */
3984 for (s
= isec
->next
; s
!= NULL
; s
= s
->next
)
3985 if ((s
->flags
& SEC_ALLOC
) != 0)
3989 if (! copy_private_bfd_data (ibfd
, obfd
))
3994 ihdr
= &elf_section_data (isec
)->this_hdr
;
3995 ohdr
= &elf_section_data (osec
)->this_hdr
;
3997 ohdr
->sh_entsize
= ihdr
->sh_entsize
;
3999 if (ihdr
->sh_type
== SHT_SYMTAB
4000 || ihdr
->sh_type
== SHT_DYNSYM
4001 || ihdr
->sh_type
== SHT_GNU_verneed
4002 || ihdr
->sh_type
== SHT_GNU_verdef
)
4003 ohdr
->sh_info
= ihdr
->sh_info
;
4005 elf_section_data (osec
)->use_rela_p
4006 = elf_section_data (isec
)->use_rela_p
;
4011 /* Copy private symbol information. If this symbol is in a section
4012 which we did not map into a BFD section, try to map the section
4013 index correctly. We use special macro definitions for the mapped
4014 section indices; these definitions are interpreted by the
4015 swap_out_syms function. */
4017 #define MAP_ONESYMTAB (SHN_LORESERVE - 1)
4018 #define MAP_DYNSYMTAB (SHN_LORESERVE - 2)
4019 #define MAP_STRTAB (SHN_LORESERVE - 3)
4020 #define MAP_SHSTRTAB (SHN_LORESERVE - 4)
4023 _bfd_elf_copy_private_symbol_data (ibfd
, isymarg
, obfd
, osymarg
)
4029 elf_symbol_type
*isym
, *osym
;
4031 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
4032 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
4035 isym
= elf_symbol_from (ibfd
, isymarg
);
4036 osym
= elf_symbol_from (obfd
, osymarg
);
4040 && bfd_is_abs_section (isym
->symbol
.section
))
4044 shndx
= isym
->internal_elf_sym
.st_shndx
;
4045 if (shndx
== elf_onesymtab (ibfd
))
4046 shndx
= MAP_ONESYMTAB
;
4047 else if (shndx
== elf_dynsymtab (ibfd
))
4048 shndx
= MAP_DYNSYMTAB
;
4049 else if (shndx
== elf_tdata (ibfd
)->strtab_section
)
4051 else if (shndx
== elf_tdata (ibfd
)->shstrtab_section
)
4052 shndx
= MAP_SHSTRTAB
;
4053 osym
->internal_elf_sym
.st_shndx
= shndx
;
4059 /* Swap out the symbols. */
4062 swap_out_syms (abfd
, sttp
, relocatable_p
)
4064 struct bfd_strtab_hash
**sttp
;
4067 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
4069 if (!elf_map_symbols (abfd
))
4072 /* Dump out the symtabs. */
4074 int symcount
= bfd_get_symcount (abfd
);
4075 asymbol
**syms
= bfd_get_outsymbols (abfd
);
4076 struct bfd_strtab_hash
*stt
;
4077 Elf_Internal_Shdr
*symtab_hdr
;
4078 Elf_Internal_Shdr
*symstrtab_hdr
;
4079 char *outbound_syms
;
4082 stt
= _bfd_elf_stringtab_init ();
4086 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4087 symtab_hdr
->sh_type
= SHT_SYMTAB
;
4088 symtab_hdr
->sh_entsize
= bed
->s
->sizeof_sym
;
4089 symtab_hdr
->sh_size
= symtab_hdr
->sh_entsize
* (symcount
+ 1);
4090 symtab_hdr
->sh_info
= elf_num_locals (abfd
) + 1;
4091 symtab_hdr
->sh_addralign
= bed
->s
->file_align
;
4093 symstrtab_hdr
= &elf_tdata (abfd
)->strtab_hdr
;
4094 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
4096 outbound_syms
= bfd_alloc (abfd
,
4097 (1 + symcount
) * bed
->s
->sizeof_sym
);
4098 if (outbound_syms
== NULL
)
4100 symtab_hdr
->contents
= (PTR
) outbound_syms
;
4102 /* now generate the data (for "contents") */
4104 /* Fill in zeroth symbol and swap it out. */
4105 Elf_Internal_Sym sym
;
4111 sym
.st_shndx
= SHN_UNDEF
;
4112 bed
->s
->swap_symbol_out (abfd
, &sym
, (PTR
) outbound_syms
);
4113 outbound_syms
+= bed
->s
->sizeof_sym
;
4115 for (idx
= 0; idx
< symcount
; idx
++)
4117 Elf_Internal_Sym sym
;
4118 bfd_vma value
= syms
[idx
]->value
;
4119 elf_symbol_type
*type_ptr
;
4120 flagword flags
= syms
[idx
]->flags
;
4123 if (flags
& BSF_SECTION_SYM
)
4124 /* Section symbols have no names. */
4128 sym
.st_name
= (unsigned long) _bfd_stringtab_add (stt
,
4131 if (sym
.st_name
== (unsigned long) -1)
4135 type_ptr
= elf_symbol_from (abfd
, syms
[idx
]);
4137 if ((flags
& BSF_SECTION_SYM
) == 0
4138 && bfd_is_com_section (syms
[idx
]->section
))
4140 /* ELF common symbols put the alignment into the `value' field,
4141 and the size into the `size' field. This is backwards from
4142 how BFD handles it, so reverse it here. */
4143 sym
.st_size
= value
;
4144 if (type_ptr
== NULL
4145 || type_ptr
->internal_elf_sym
.st_value
== 0)
4146 sym
.st_value
= value
>= 16 ? 16 : (1 << bfd_log2 (value
));
4148 sym
.st_value
= type_ptr
->internal_elf_sym
.st_value
;
4149 sym
.st_shndx
= _bfd_elf_section_from_bfd_section
4150 (abfd
, syms
[idx
]->section
);
4154 asection
*sec
= syms
[idx
]->section
;
4157 if (sec
->output_section
)
4159 value
+= sec
->output_offset
;
4160 sec
= sec
->output_section
;
4162 /* Don't add in the section vma for relocatable output. */
4163 if (! relocatable_p
)
4165 sym
.st_value
= value
;
4166 sym
.st_size
= type_ptr
? type_ptr
->internal_elf_sym
.st_size
: 0;
4168 if (bfd_is_abs_section (sec
)
4170 && type_ptr
->internal_elf_sym
.st_shndx
!= 0)
4172 /* This symbol is in a real ELF section which we did
4173 not create as a BFD section. Undo the mapping done
4174 by copy_private_symbol_data. */
4175 shndx
= type_ptr
->internal_elf_sym
.st_shndx
;
4179 shndx
= elf_onesymtab (abfd
);
4182 shndx
= elf_dynsymtab (abfd
);
4185 shndx
= elf_tdata (abfd
)->strtab_section
;
4188 shndx
= elf_tdata (abfd
)->shstrtab_section
;
4196 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
4202 /* Writing this would be a hell of a lot easier if
4203 we had some decent documentation on bfd, and
4204 knew what to expect of the library, and what to
4205 demand of applications. For example, it
4206 appears that `objcopy' might not set the
4207 section of a symbol to be a section that is
4208 actually in the output file. */
4209 sec2
= bfd_get_section_by_name (abfd
, sec
->name
);
4210 BFD_ASSERT (sec2
!= 0);
4211 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec2
);
4212 BFD_ASSERT (shndx
!= -1);
4216 sym
.st_shndx
= shndx
;
4219 if ((flags
& BSF_FUNCTION
) != 0)
4221 else if ((flags
& BSF_OBJECT
) != 0)
4226 /* Processor-specific types */
4227 if (bed
->elf_backend_get_symbol_type
)
4228 type
= (*bed
->elf_backend_get_symbol_type
) (&type_ptr
->internal_elf_sym
, type
);
4230 if (flags
& BSF_SECTION_SYM
)
4231 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_SECTION
);
4232 else if (bfd_is_com_section (syms
[idx
]->section
))
4233 sym
.st_info
= ELF_ST_INFO (STB_GLOBAL
, type
);
4234 else if (bfd_is_und_section (syms
[idx
]->section
))
4235 sym
.st_info
= ELF_ST_INFO (((flags
& BSF_WEAK
)
4239 else if (flags
& BSF_FILE
)
4240 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_FILE
);
4243 int bind
= STB_LOCAL
;
4245 if (flags
& BSF_LOCAL
)
4247 else if (flags
& BSF_WEAK
)
4249 else if (flags
& BSF_GLOBAL
)
4252 sym
.st_info
= ELF_ST_INFO (bind
, type
);
4255 if (type_ptr
!= NULL
)
4256 sym
.st_other
= type_ptr
->internal_elf_sym
.st_other
;
4260 bed
->s
->swap_symbol_out (abfd
, &sym
, (PTR
) outbound_syms
);
4261 outbound_syms
+= bed
->s
->sizeof_sym
;
4265 symstrtab_hdr
->sh_size
= _bfd_stringtab_size (stt
);
4266 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
4268 symstrtab_hdr
->sh_flags
= 0;
4269 symstrtab_hdr
->sh_addr
= 0;
4270 symstrtab_hdr
->sh_entsize
= 0;
4271 symstrtab_hdr
->sh_link
= 0;
4272 symstrtab_hdr
->sh_info
= 0;
4273 symstrtab_hdr
->sh_addralign
= 1;
4279 /* Return the number of bytes required to hold the symtab vector.
4281 Note that we base it on the count plus 1, since we will null terminate
4282 the vector allocated based on this size. However, the ELF symbol table
4283 always has a dummy entry as symbol #0, so it ends up even. */
4286 _bfd_elf_get_symtab_upper_bound (abfd
)
4291 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4293 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
4294 symtab_size
= (symcount
- 1 + 1) * (sizeof (asymbol
*));
4300 _bfd_elf_get_dynamic_symtab_upper_bound (abfd
)
4305 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->dynsymtab_hdr
;
4307 if (elf_dynsymtab (abfd
) == 0)
4309 bfd_set_error (bfd_error_invalid_operation
);
4313 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
4314 symtab_size
= (symcount
- 1 + 1) * (sizeof (asymbol
*));
4320 _bfd_elf_get_reloc_upper_bound (abfd
, asect
)
4321 bfd
*abfd ATTRIBUTE_UNUSED
;
4324 return (asect
->reloc_count
+ 1) * sizeof (arelent
*);
4327 /* Canonicalize the relocs. */
4330 _bfd_elf_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
4339 if (! get_elf_backend_data (abfd
)->s
->slurp_reloc_table (abfd
,
4345 tblptr
= section
->relocation
;
4346 for (i
= 0; i
< section
->reloc_count
; i
++)
4347 *relptr
++ = tblptr
++;
4351 return section
->reloc_count
;
4355 _bfd_elf_get_symtab (abfd
, alocation
)
4357 asymbol
**alocation
;
4359 long symcount
= get_elf_backend_data (abfd
)->s
->slurp_symbol_table
4360 (abfd
, alocation
, false);
4363 bfd_get_symcount (abfd
) = symcount
;
4368 _bfd_elf_canonicalize_dynamic_symtab (abfd
, alocation
)
4370 asymbol
**alocation
;
4372 return get_elf_backend_data (abfd
)->s
->slurp_symbol_table
4373 (abfd
, alocation
, true);
4376 /* Return the size required for the dynamic reloc entries. Any
4377 section that was actually installed in the BFD, and has type
4378 SHT_REL or SHT_RELA, and uses the dynamic symbol table, is
4379 considered to be a dynamic reloc section. */
4382 _bfd_elf_get_dynamic_reloc_upper_bound (abfd
)
4388 if (elf_dynsymtab (abfd
) == 0)
4390 bfd_set_error (bfd_error_invalid_operation
);
4394 ret
= sizeof (arelent
*);
4395 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
4396 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
4397 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_REL
4398 || elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
4399 ret
+= ((s
->_raw_size
/ elf_section_data (s
)->this_hdr
.sh_entsize
)
4400 * sizeof (arelent
*));
4405 /* Canonicalize the dynamic relocation entries. Note that we return
4406 the dynamic relocations as a single block, although they are
4407 actually associated with particular sections; the interface, which
4408 was designed for SunOS style shared libraries, expects that there
4409 is only one set of dynamic relocs. Any section that was actually
4410 installed in the BFD, and has type SHT_REL or SHT_RELA, and uses
4411 the dynamic symbol table, is considered to be a dynamic reloc
4415 _bfd_elf_canonicalize_dynamic_reloc (abfd
, storage
, syms
)
4420 boolean (*slurp_relocs
) PARAMS ((bfd
*, asection
*, asymbol
**, boolean
));
4424 if (elf_dynsymtab (abfd
) == 0)
4426 bfd_set_error (bfd_error_invalid_operation
);
4430 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
4432 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
4434 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
4435 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_REL
4436 || elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
4441 if (! (*slurp_relocs
) (abfd
, s
, syms
, true))
4443 count
= s
->_raw_size
/ elf_section_data (s
)->this_hdr
.sh_entsize
;
4445 for (i
= 0; i
< count
; i
++)
4456 /* Read in the version information. */
4459 _bfd_elf_slurp_version_tables (abfd
)
4462 bfd_byte
*contents
= NULL
;
4464 if (elf_dynverdef (abfd
) != 0)
4466 Elf_Internal_Shdr
*hdr
;
4467 Elf_External_Verdef
*everdef
;
4468 Elf_Internal_Verdef
*iverdef
;
4471 hdr
= &elf_tdata (abfd
)->dynverdef_hdr
;
4473 elf_tdata (abfd
)->verdef
=
4474 ((Elf_Internal_Verdef
*)
4475 bfd_zalloc (abfd
, hdr
->sh_info
* sizeof (Elf_Internal_Verdef
)));
4476 if (elf_tdata (abfd
)->verdef
== NULL
)
4479 elf_tdata (abfd
)->cverdefs
= hdr
->sh_info
;
4481 contents
= (bfd_byte
*) bfd_malloc (hdr
->sh_size
);
4482 if (contents
== NULL
)
4484 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
4485 || bfd_read ((PTR
) contents
, 1, hdr
->sh_size
, abfd
) != hdr
->sh_size
)
4488 everdef
= (Elf_External_Verdef
*) contents
;
4489 iverdef
= elf_tdata (abfd
)->verdef
;
4490 for (i
= 0; i
< hdr
->sh_info
; i
++, iverdef
++)
4492 Elf_External_Verdaux
*everdaux
;
4493 Elf_Internal_Verdaux
*iverdaux
;
4496 _bfd_elf_swap_verdef_in (abfd
, everdef
, iverdef
);
4498 iverdef
->vd_bfd
= abfd
;
4500 iverdef
->vd_auxptr
= ((Elf_Internal_Verdaux
*)
4503 * sizeof (Elf_Internal_Verdaux
))));
4504 if (iverdef
->vd_auxptr
== NULL
)
4507 everdaux
= ((Elf_External_Verdaux
*)
4508 ((bfd_byte
*) everdef
+ iverdef
->vd_aux
));
4509 iverdaux
= iverdef
->vd_auxptr
;
4510 for (j
= 0; j
< iverdef
->vd_cnt
; j
++, iverdaux
++)
4512 _bfd_elf_swap_verdaux_in (abfd
, everdaux
, iverdaux
);
4514 iverdaux
->vda_nodename
=
4515 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
4516 iverdaux
->vda_name
);
4517 if (iverdaux
->vda_nodename
== NULL
)
4520 if (j
+ 1 < iverdef
->vd_cnt
)
4521 iverdaux
->vda_nextptr
= iverdaux
+ 1;
4523 iverdaux
->vda_nextptr
= NULL
;
4525 everdaux
= ((Elf_External_Verdaux
*)
4526 ((bfd_byte
*) everdaux
+ iverdaux
->vda_next
));
4529 iverdef
->vd_nodename
= iverdef
->vd_auxptr
->vda_nodename
;
4531 if (i
+ 1 < hdr
->sh_info
)
4532 iverdef
->vd_nextdef
= iverdef
+ 1;
4534 iverdef
->vd_nextdef
= NULL
;
4536 everdef
= ((Elf_External_Verdef
*)
4537 ((bfd_byte
*) everdef
+ iverdef
->vd_next
));
4544 if (elf_dynverref (abfd
) != 0)
4546 Elf_Internal_Shdr
*hdr
;
4547 Elf_External_Verneed
*everneed
;
4548 Elf_Internal_Verneed
*iverneed
;
4551 hdr
= &elf_tdata (abfd
)->dynverref_hdr
;
4553 elf_tdata (abfd
)->verref
=
4554 ((Elf_Internal_Verneed
*)
4555 bfd_zalloc (abfd
, hdr
->sh_info
* sizeof (Elf_Internal_Verneed
)));
4556 if (elf_tdata (abfd
)->verref
== NULL
)
4559 elf_tdata (abfd
)->cverrefs
= hdr
->sh_info
;
4561 contents
= (bfd_byte
*) bfd_malloc (hdr
->sh_size
);
4562 if (contents
== NULL
)
4564 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
4565 || bfd_read ((PTR
) contents
, 1, hdr
->sh_size
, abfd
) != hdr
->sh_size
)
4568 everneed
= (Elf_External_Verneed
*) contents
;
4569 iverneed
= elf_tdata (abfd
)->verref
;
4570 for (i
= 0; i
< hdr
->sh_info
; i
++, iverneed
++)
4572 Elf_External_Vernaux
*evernaux
;
4573 Elf_Internal_Vernaux
*ivernaux
;
4576 _bfd_elf_swap_verneed_in (abfd
, everneed
, iverneed
);
4578 iverneed
->vn_bfd
= abfd
;
4580 iverneed
->vn_filename
=
4581 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
4583 if (iverneed
->vn_filename
== NULL
)
4586 iverneed
->vn_auxptr
=
4587 ((Elf_Internal_Vernaux
*)
4589 iverneed
->vn_cnt
* sizeof (Elf_Internal_Vernaux
)));
4591 evernaux
= ((Elf_External_Vernaux
*)
4592 ((bfd_byte
*) everneed
+ iverneed
->vn_aux
));
4593 ivernaux
= iverneed
->vn_auxptr
;
4594 for (j
= 0; j
< iverneed
->vn_cnt
; j
++, ivernaux
++)
4596 _bfd_elf_swap_vernaux_in (abfd
, evernaux
, ivernaux
);
4598 ivernaux
->vna_nodename
=
4599 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
4600 ivernaux
->vna_name
);
4601 if (ivernaux
->vna_nodename
== NULL
)
4604 if (j
+ 1 < iverneed
->vn_cnt
)
4605 ivernaux
->vna_nextptr
= ivernaux
+ 1;
4607 ivernaux
->vna_nextptr
= NULL
;
4609 evernaux
= ((Elf_External_Vernaux
*)
4610 ((bfd_byte
*) evernaux
+ ivernaux
->vna_next
));
4613 if (i
+ 1 < hdr
->sh_info
)
4614 iverneed
->vn_nextref
= iverneed
+ 1;
4616 iverneed
->vn_nextref
= NULL
;
4618 everneed
= ((Elf_External_Verneed
*)
4619 ((bfd_byte
*) everneed
+ iverneed
->vn_next
));
4629 if (contents
== NULL
)
4635 _bfd_elf_make_empty_symbol (abfd
)
4638 elf_symbol_type
*newsym
;
4640 newsym
= (elf_symbol_type
*) bfd_zalloc (abfd
, sizeof (elf_symbol_type
));
4645 newsym
->symbol
.the_bfd
= abfd
;
4646 return &newsym
->symbol
;
4651 _bfd_elf_get_symbol_info (ignore_abfd
, symbol
, ret
)
4652 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
4656 bfd_symbol_info (symbol
, ret
);
4659 /* Return whether a symbol name implies a local symbol. Most targets
4660 use this function for the is_local_label_name entry point, but some
4664 _bfd_elf_is_local_label_name (abfd
, name
)
4665 bfd
*abfd ATTRIBUTE_UNUSED
;
4668 /* Normal local symbols start with ``.L''. */
4669 if (name
[0] == '.' && name
[1] == 'L')
4672 /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate
4673 DWARF debugging symbols starting with ``..''. */
4674 if (name
[0] == '.' && name
[1] == '.')
4677 /* gcc will sometimes generate symbols beginning with ``_.L_'' when
4678 emitting DWARF debugging output. I suspect this is actually a
4679 small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call
4680 ASM_GENERATE_INTERNAL_LABEL, and this causes the leading
4681 underscore to be emitted on some ELF targets). For ease of use,
4682 we treat such symbols as local. */
4683 if (name
[0] == '_' && name
[1] == '.' && name
[2] == 'L' && name
[3] == '_')
4690 _bfd_elf_get_lineno (ignore_abfd
, symbol
)
4691 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
4692 asymbol
*symbol ATTRIBUTE_UNUSED
;
4699 _bfd_elf_set_arch_mach (abfd
, arch
, machine
)
4701 enum bfd_architecture arch
;
4702 unsigned long machine
;
4704 /* If this isn't the right architecture for this backend, and this
4705 isn't the generic backend, fail. */
4706 if (arch
!= get_elf_backend_data (abfd
)->arch
4707 && arch
!= bfd_arch_unknown
4708 && get_elf_backend_data (abfd
)->arch
!= bfd_arch_unknown
)
4711 return bfd_default_set_arch_mach (abfd
, arch
, machine
);
4714 /* Find the nearest line to a particular section and offset, for error
4718 _bfd_elf_find_nearest_line (abfd
,
4729 CONST
char **filename_ptr
;
4730 CONST
char **functionname_ptr
;
4731 unsigned int *line_ptr
;
4734 const char *filename
;
4739 if (_bfd_dwarf1_find_nearest_line (abfd
, section
, symbols
, offset
,
4740 filename_ptr
, functionname_ptr
,
4744 if (_bfd_dwarf2_find_nearest_line (abfd
, section
, symbols
, offset
,
4745 filename_ptr
, functionname_ptr
,
4749 if (! _bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
4750 &found
, filename_ptr
,
4751 functionname_ptr
, line_ptr
,
4752 &elf_tdata (abfd
)->line_info
))
4757 if (symbols
== NULL
)
4764 for (p
= symbols
; *p
!= NULL
; p
++)
4768 q
= (elf_symbol_type
*) *p
;
4770 if (bfd_get_section (&q
->symbol
) != section
)
4773 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
4778 filename
= bfd_asymbol_name (&q
->symbol
);
4782 if (q
->symbol
.section
== section
4783 && q
->symbol
.value
>= low_func
4784 && q
->symbol
.value
<= offset
)
4786 func
= (asymbol
*) q
;
4787 low_func
= q
->symbol
.value
;
4796 *filename_ptr
= filename
;
4797 *functionname_ptr
= bfd_asymbol_name (func
);
4803 _bfd_elf_sizeof_headers (abfd
, reloc
)
4809 ret
= get_elf_backend_data (abfd
)->s
->sizeof_ehdr
;
4811 ret
+= get_program_header_size (abfd
);
4816 _bfd_elf_set_section_contents (abfd
, section
, location
, offset
, count
)
4821 bfd_size_type count
;
4823 Elf_Internal_Shdr
*hdr
;
4825 if (! abfd
->output_has_begun
4826 && ! _bfd_elf_compute_section_file_positions
4827 (abfd
, (struct bfd_link_info
*) NULL
))
4830 hdr
= &elf_section_data (section
)->this_hdr
;
4832 if (bfd_seek (abfd
, hdr
->sh_offset
+ offset
, SEEK_SET
) == -1)
4834 if (bfd_write (location
, 1, count
, abfd
) != count
)
4841 _bfd_elf_no_info_to_howto (abfd
, cache_ptr
, dst
)
4842 bfd
*abfd ATTRIBUTE_UNUSED
;
4843 arelent
*cache_ptr ATTRIBUTE_UNUSED
;
4844 Elf_Internal_Rela
*dst ATTRIBUTE_UNUSED
;
4851 _bfd_elf_no_info_to_howto_rel (abfd
, cache_ptr
, dst
)
4854 Elf_Internal_Rel
*dst
;
4860 /* Try to convert a non-ELF reloc into an ELF one. */
4863 _bfd_elf_validate_reloc (abfd
, areloc
)
4867 /* Check whether we really have an ELF howto. */
4869 if ((*areloc
->sym_ptr_ptr
)->the_bfd
->xvec
!= abfd
->xvec
)
4871 bfd_reloc_code_real_type code
;
4872 reloc_howto_type
*howto
;
4874 /* Alien reloc: Try to determine its type to replace it with an
4875 equivalent ELF reloc. */
4877 if (areloc
->howto
->pc_relative
)
4879 switch (areloc
->howto
->bitsize
)
4882 code
= BFD_RELOC_8_PCREL
;
4885 code
= BFD_RELOC_12_PCREL
;
4888 code
= BFD_RELOC_16_PCREL
;
4891 code
= BFD_RELOC_24_PCREL
;
4894 code
= BFD_RELOC_32_PCREL
;
4897 code
= BFD_RELOC_64_PCREL
;
4903 howto
= bfd_reloc_type_lookup (abfd
, code
);
4905 if (areloc
->howto
->pcrel_offset
!= howto
->pcrel_offset
)
4907 if (howto
->pcrel_offset
)
4908 areloc
->addend
+= areloc
->address
;
4910 areloc
->addend
-= areloc
->address
; /* addend is unsigned!! */
4915 switch (areloc
->howto
->bitsize
)
4921 code
= BFD_RELOC_14
;
4924 code
= BFD_RELOC_16
;
4927 code
= BFD_RELOC_26
;
4930 code
= BFD_RELOC_32
;
4933 code
= BFD_RELOC_64
;
4939 howto
= bfd_reloc_type_lookup (abfd
, code
);
4943 areloc
->howto
= howto
;
4951 (*_bfd_error_handler
)
4952 (_("%s: unsupported relocation type %s"),
4953 bfd_get_filename (abfd
), areloc
->howto
->name
);
4954 bfd_set_error (bfd_error_bad_value
);
4959 _bfd_elf_close_and_cleanup (abfd
)
4962 if (bfd_get_format (abfd
) == bfd_object
)
4964 if (elf_shstrtab (abfd
) != NULL
)
4965 _bfd_stringtab_free (elf_shstrtab (abfd
));
4968 return _bfd_generic_close_and_cleanup (abfd
);
4971 /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY
4972 in the relocation's offset. Thus we cannot allow any sort of sanity
4973 range-checking to interfere. There is nothing else to do in processing
4976 bfd_reloc_status_type
4977 _bfd_elf_rel_vtable_reloc_fn (abfd
, re
, symbol
, data
, is
, obfd
, errmsg
)
4978 bfd
*abfd ATTRIBUTE_UNUSED
;
4979 arelent
*re ATTRIBUTE_UNUSED
;
4980 struct symbol_cache_entry
*symbol ATTRIBUTE_UNUSED
;
4981 PTR data ATTRIBUTE_UNUSED
;
4982 asection
*is ATTRIBUTE_UNUSED
;
4983 bfd
*obfd ATTRIBUTE_UNUSED
;
4984 char **errmsg ATTRIBUTE_UNUSED
;
4986 return bfd_reloc_ok
;
4990 /* Elf core file support. Much of this only works on native
4991 toolchains, since we rely on knowing the
4992 machine-dependent procfs structure in order to pick
4993 out details about the corefile. */
4995 #ifdef HAVE_SYS_PROCFS_H
4996 # include <sys/procfs.h>
5000 /* Define offsetof for those systems which lack it. */
5003 # define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
5007 /* FIXME: this is kinda wrong, but it's what gdb wants. */
5010 elfcore_make_pid (abfd
)
5013 return ((elf_tdata (abfd
)->core_lwpid
<< 16)
5014 + (elf_tdata (abfd
)->core_pid
));
5018 /* If there isn't a section called NAME, make one, using
5019 data from SECT. Note, this function will generate a
5020 reference to NAME, so you shouldn't deallocate or
5024 elfcore_maybe_make_sect (abfd
, name
, sect
)
5031 if (bfd_get_section_by_name (abfd
, name
) != NULL
)
5034 sect2
= bfd_make_section (abfd
, name
);
5038 sect2
->_raw_size
= sect
->_raw_size
;
5039 sect2
->filepos
= sect
->filepos
;
5040 sect2
->flags
= sect
->flags
;
5041 sect2
->alignment_power
= sect
->alignment_power
;
5046 /* prstatus_t exists on:
5048 linux 2.[01] + glibc
5052 #if defined (HAVE_PRSTATUS_T)
5054 elfcore_grok_prstatus (abfd
, note
)
5056 Elf_Internal_Note
* note
;
5063 if (note
->descsz
!= sizeof (prstat
))
5066 memcpy (&prstat
, note
->descdata
, sizeof (prstat
));
5068 elf_tdata (abfd
)->core_signal
= prstat
.pr_cursig
;
5069 elf_tdata (abfd
)->core_pid
= prstat
.pr_pid
;
5071 /* pr_who exists on:
5074 pr_who doesn't exist on:
5077 #if defined (HAVE_PRSTATUS_T_PR_WHO)
5078 elf_tdata (abfd
)->core_lwpid
= prstat
.pr_who
;
5081 /* Make a ".reg/999" section. */
5083 sprintf (buf
, ".reg/%d", elfcore_make_pid (abfd
));
5084 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5089 sect
= bfd_make_section (abfd
, name
);
5092 sect
->_raw_size
= sizeof (prstat
.pr_reg
);
5093 sect
->filepos
= note
->descpos
+ offsetof (prstatus_t
, pr_reg
);
5094 sect
->flags
= SEC_HAS_CONTENTS
;
5095 sect
->alignment_power
= 2;
5097 if (! elfcore_maybe_make_sect (abfd
, ".reg", sect
))
5102 #endif /* defined (HAVE_PRSTATUS_T) */
5105 /* Create a pseudosection containing the exact contents of NOTE. This
5106 actually creates up to two pseudosections:
5107 - For the single-threaded case, a section named NAME, unless
5108 such a section already exists.
5109 - For the multi-threaded case, a section named "NAME/PID", where
5110 PID is elfcore_make_pid (abfd).
5111 Both pseudosections have identical contents: the contents of NOTE. */
5114 elfcore_make_note_pseudosection (abfd
, name
, note
)
5117 Elf_Internal_Note
* note
;
5120 char *threaded_name
;
5123 /* Build the section name. */
5125 sprintf (buf
, "%s/%d", name
, elfcore_make_pid (abfd
));
5126 threaded_name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5127 if (threaded_name
== NULL
)
5129 strcpy (threaded_name
, buf
);
5131 sect
= bfd_make_section (abfd
, threaded_name
);
5134 sect
->_raw_size
= note
->descsz
;
5135 sect
->filepos
= note
->descpos
;
5136 sect
->flags
= SEC_HAS_CONTENTS
;
5137 sect
->alignment_power
= 2;
5139 if (! elfcore_maybe_make_sect (abfd
, name
, sect
))
5146 /* There isn't a consistent prfpregset_t across platforms,
5147 but it doesn't matter, because we don't have to pick this
5148 data structure apart. */
5150 elfcore_grok_prfpreg (abfd
, note
)
5152 Elf_Internal_Note
* note
;
5154 return elfcore_make_note_pseudosection (abfd
, ".reg2", note
);
5158 /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note
5159 type of 5 (NT_PRXFPREG). Just include the whole note's contents
5162 elfcore_grok_prxfpreg (abfd
, note
)
5164 Elf_Internal_Note
* note
;
5166 return elfcore_make_note_pseudosection (abfd
, ".reg-xfp", note
);
5170 #if defined (HAVE_PRPSINFO_T)
5171 # define elfcore_psinfo_t prpsinfo_t
5174 #if defined (HAVE_PSINFO_T)
5175 # define elfcore_psinfo_t psinfo_t
5179 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
5181 /* return a malloc'ed copy of a string at START which is at
5182 most MAX bytes long, possibly without a terminating '\0'.
5183 the copy will always have a terminating '\0'. */
5186 elfcore_strndup (abfd
, start
, max
)
5192 char* end
= memchr (start
, '\0', max
);
5200 dup
= bfd_alloc (abfd
, len
+ 1);
5204 memcpy (dup
, start
, len
);
5211 elfcore_grok_psinfo (abfd
, note
)
5213 Elf_Internal_Note
* note
;
5215 elfcore_psinfo_t psinfo
;
5217 if (note
->descsz
!= sizeof (elfcore_psinfo_t
))
5220 memcpy (&psinfo
, note
->descdata
, note
->descsz
);
5222 elf_tdata (abfd
)->core_program
5223 = elfcore_strndup (abfd
, psinfo
.pr_fname
, sizeof (psinfo
.pr_fname
));
5225 elf_tdata (abfd
)->core_command
5226 = elfcore_strndup (abfd
, psinfo
.pr_psargs
, sizeof (psinfo
.pr_psargs
));
5228 /* Note that for some reason, a spurious space is tacked
5229 onto the end of the args in some (at least one anyway)
5230 implementations, so strip it off if it exists. */
5233 char* command
= elf_tdata (abfd
)->core_command
;
5234 int n
= strlen (command
);
5236 if (0 < n
&& command
[n
- 1] == ' ')
5237 command
[n
- 1] = '\0';
5242 #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */
5245 #if defined (HAVE_PSTATUS_T)
5247 elfcore_grok_pstatus (abfd
, note
)
5249 Elf_Internal_Note
* note
;
5253 if (note
->descsz
!= sizeof (pstat
))
5256 memcpy (&pstat
, note
->descdata
, sizeof (pstat
));
5258 elf_tdata (abfd
)->core_pid
= pstat
.pr_pid
;
5260 /* Could grab some more details from the "representative"
5261 lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an
5262 NT_LWPSTATUS note, presumably. */
5266 #endif /* defined (HAVE_PSTATUS_T) */
5269 #if defined (HAVE_LWPSTATUS_T)
5271 elfcore_grok_lwpstatus (abfd
, note
)
5273 Elf_Internal_Note
* note
;
5275 lwpstatus_t lwpstat
;
5280 if (note
->descsz
!= sizeof (lwpstat
))
5283 memcpy (&lwpstat
, note
->descdata
, sizeof (lwpstat
));
5285 elf_tdata (abfd
)->core_lwpid
= lwpstat
.pr_lwpid
;
5286 elf_tdata (abfd
)->core_signal
= lwpstat
.pr_cursig
;
5288 /* Make a ".reg/999" section. */
5290 sprintf (buf
, ".reg/%d", elfcore_make_pid (abfd
));
5291 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5296 sect
= bfd_make_section (abfd
, name
);
5300 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
5301 sect
->_raw_size
= sizeof (lwpstat
.pr_context
.uc_mcontext
.gregs
);
5302 sect
->filepos
= note
->descpos
5303 + offsetof (lwpstatus_t
, pr_context
.uc_mcontext
.gregs
);
5306 #if defined (HAVE_LWPSTATUS_T_PR_REG)
5307 sect
->_raw_size
= sizeof (lwpstat
.pr_reg
);
5308 sect
->filepos
= note
->descpos
+ offsetof (lwpstatus_t
, pr_reg
);
5311 sect
->flags
= SEC_HAS_CONTENTS
;
5312 sect
->alignment_power
= 2;
5314 if (!elfcore_maybe_make_sect (abfd
, ".reg", sect
))
5317 /* Make a ".reg2/999" section */
5319 sprintf (buf
, ".reg2/%d", elfcore_make_pid (abfd
));
5320 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5325 sect
= bfd_make_section (abfd
, name
);
5329 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
5330 sect
->_raw_size
= sizeof (lwpstat
.pr_context
.uc_mcontext
.fpregs
);
5331 sect
->filepos
= note
->descpos
5332 + offsetof (lwpstatus_t
, pr_context
.uc_mcontext
.fpregs
);
5335 #if defined (HAVE_LWPSTATUS_T_PR_FPREG)
5336 sect
->_raw_size
= sizeof (lwpstat
.pr_fpreg
);
5337 sect
->filepos
= note
->descpos
+ offsetof (lwpstatus_t
, pr_fpreg
);
5340 sect
->flags
= SEC_HAS_CONTENTS
;
5341 sect
->alignment_power
= 2;
5343 if (!elfcore_maybe_make_sect (abfd
, ".reg2", sect
))
5348 #endif /* defined (HAVE_LWPSTATUS_T) */
5350 #if defined (HAVE_WIN32_PSTATUS_T)
5352 elfcore_grok_win32pstatus (abfd
, note
)
5354 Elf_Internal_Note
* note
;
5359 win32_pstatus_t pstatus
;
5361 if (note
->descsz
< sizeof (pstatus
))
5364 memcpy (& pstatus
, note
->descdata
, note
->descsz
);
5366 switch (pstatus
.data_type
)
5368 case NOTE_INFO_PROCESS
:
5369 /* FIXME: need to add ->core_command. */
5370 elf_tdata (abfd
)->core_signal
= pstatus
.data
.process_info
.signal
;
5371 elf_tdata (abfd
)->core_pid
= pstatus
.data
.process_info
.pid
;
5374 case NOTE_INFO_THREAD
:
5375 /* Make a ".reg/999" section. */
5376 sprintf (buf
, ".reg/%d", pstatus
.data
.thread_info
.tid
);
5378 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5384 sect
= bfd_make_section (abfd
, name
);
5388 sect
->_raw_size
= sizeof (pstatus
.data
.thread_info
.thread_context
);
5389 sect
->filepos
= note
->descpos
+ offsetof (struct win32_pstatus
,
5390 data
.thread_info
.thread_context
);
5391 sect
->flags
= SEC_HAS_CONTENTS
;
5392 sect
->alignment_power
= 2;
5394 if (pstatus
.data
.thread_info
.is_active_thread
)
5395 if (! elfcore_maybe_make_sect (abfd
, ".reg", sect
))
5399 case NOTE_INFO_MODULE
:
5400 /* Make a ".module/xxxxxxxx" section. */
5401 sprintf (buf
, ".module/%08x" , pstatus
.data
.module_info
.base_address
);
5403 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5409 sect
= bfd_make_section (abfd
, name
);
5414 sect
->_raw_size
= note
->descsz
;
5415 sect
->filepos
= note
->descpos
;
5416 sect
->flags
= SEC_HAS_CONTENTS
;
5417 sect
->alignment_power
= 2;
5426 #endif /* HAVE_WIN32_PSTATUS_T */
5429 elfcore_grok_note (abfd
, note
)
5431 Elf_Internal_Note
* note
;
5438 #if defined (HAVE_PRSTATUS_T)
5440 return elfcore_grok_prstatus (abfd
, note
);
5443 #if defined (HAVE_PSTATUS_T)
5445 return elfcore_grok_pstatus (abfd
, note
);
5448 #if defined (HAVE_LWPSTATUS_T)
5450 return elfcore_grok_lwpstatus (abfd
, note
);
5453 case NT_FPREGSET
: /* FIXME: rename to NT_PRFPREG */
5454 return elfcore_grok_prfpreg (abfd
, note
);
5456 #if defined (HAVE_WIN32_PSTATUS_T)
5457 case NT_WIN32PSTATUS
:
5458 return elfcore_grok_win32pstatus (abfd
, note
);
5461 case NT_PRXFPREG
: /* Linux SSE extension */
5462 if (note
->namesz
== 5
5463 && ! strcmp (note
->namedata
, "LINUX"))
5464 return elfcore_grok_prxfpreg (abfd
, note
);
5468 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
5471 return elfcore_grok_psinfo (abfd
, note
);
5478 elfcore_read_notes (abfd
, offset
, size
)
5489 if (bfd_seek (abfd
, offset
, SEEK_SET
) == -1)
5492 buf
= bfd_malloc ((size_t) size
);
5496 if (bfd_read (buf
, size
, 1, abfd
) != size
)
5504 while (p
< buf
+ size
)
5506 /* FIXME: bad alignment assumption. */
5507 Elf_External_Note
* xnp
= (Elf_External_Note
*) p
;
5508 Elf_Internal_Note in
;
5510 in
.type
= bfd_h_get_32 (abfd
, (bfd_byte
*) xnp
->type
);
5512 in
.namesz
= bfd_h_get_32 (abfd
, (bfd_byte
*) xnp
->namesz
);
5513 in
.namedata
= xnp
->name
;
5515 in
.descsz
= bfd_h_get_32 (abfd
, (bfd_byte
*) xnp
->descsz
);
5516 in
.descdata
= in
.namedata
+ BFD_ALIGN (in
.namesz
, 4);
5517 in
.descpos
= offset
+ (in
.descdata
- buf
);
5519 if (! elfcore_grok_note (abfd
, &in
))
5522 p
= in
.descdata
+ BFD_ALIGN (in
.descsz
, 4);
5530 /* FIXME: This function is now unnecessary. Callers can just call
5531 bfd_section_from_phdr directly. */
5534 _bfd_elfcore_section_from_phdr (abfd
, phdr
, sec_num
)
5536 Elf_Internal_Phdr
* phdr
;
5539 if (! bfd_section_from_phdr (abfd
, phdr
, sec_num
))
5547 /* Providing external access to the ELF program header table. */
5549 /* Return an upper bound on the number of bytes required to store a
5550 copy of ABFD's program header table entries. Return -1 if an error
5551 occurs; bfd_get_error will return an appropriate code. */
5553 bfd_get_elf_phdr_upper_bound (abfd
)
5556 if (abfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
5558 bfd_set_error (bfd_error_wrong_format
);
5562 return (elf_elfheader (abfd
)->e_phnum
5563 * sizeof (Elf_Internal_Phdr
));
5567 /* Copy ABFD's program header table entries to *PHDRS. The entries
5568 will be stored as an array of Elf_Internal_Phdr structures, as
5569 defined in include/elf/internal.h. To find out how large the
5570 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
5572 Return the number of program header table entries read, or -1 if an
5573 error occurs; bfd_get_error will return an appropriate code. */
5575 bfd_get_elf_phdrs (abfd
, phdrs
)
5581 if (abfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
5583 bfd_set_error (bfd_error_wrong_format
);
5587 num_phdrs
= elf_elfheader (abfd
)->e_phnum
;
5588 memcpy (phdrs
, elf_tdata (abfd
)->phdr
,
5589 num_phdrs
* sizeof (Elf_Internal_Phdr
));