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 if (hdr
->sh_size
!= 0)
1358 elf_section_data (target_sect
)->use_rela_p
1359 = (hdr
->sh_type
== SHT_RELA
);
1360 abfd
->flags
|= HAS_RELOC
;
1365 case SHT_GNU_verdef
:
1366 elf_dynverdef (abfd
) = shindex
;
1367 elf_tdata (abfd
)->dynverdef_hdr
= *hdr
;
1368 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1371 case SHT_GNU_versym
:
1372 elf_dynversym (abfd
) = shindex
;
1373 elf_tdata (abfd
)->dynversym_hdr
= *hdr
;
1374 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1377 case SHT_GNU_verneed
:
1378 elf_dynverref (abfd
) = shindex
;
1379 elf_tdata (abfd
)->dynverref_hdr
= *hdr
;
1380 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1387 /* Check for any processor-specific section types. */
1389 if (bed
->elf_backend_section_from_shdr
)
1390 (*bed
->elf_backend_section_from_shdr
) (abfd
, hdr
, name
);
1398 /* Given an ELF section number, retrieve the corresponding BFD
1402 bfd_section_from_elf_index (abfd
, index
)
1406 BFD_ASSERT (index
> 0 && index
< SHN_LORESERVE
);
1407 if (index
>= elf_elfheader (abfd
)->e_shnum
)
1409 return elf_elfsections (abfd
)[index
]->bfd_section
;
1413 _bfd_elf_new_section_hook (abfd
, sec
)
1417 struct bfd_elf_section_data
*sdata
;
1419 sdata
= (struct bfd_elf_section_data
*) bfd_zalloc (abfd
, sizeof (*sdata
));
1422 sec
->used_by_bfd
= (PTR
) sdata
;
1424 /* Indicate whether or not this section should use RELA relocations. */
1426 = get_elf_backend_data (abfd
)->default_use_rela_p
;
1431 /* Create a new bfd section from an ELF program header.
1433 Since program segments have no names, we generate a synthetic name
1434 of the form segment<NUM>, where NUM is generally the index in the
1435 program header table. For segments that are split (see below) we
1436 generate the names segment<NUM>a and segment<NUM>b.
1438 Note that some program segments may have a file size that is different than
1439 (less than) the memory size. All this means is that at execution the
1440 system must allocate the amount of memory specified by the memory size,
1441 but only initialize it with the first "file size" bytes read from the
1442 file. This would occur for example, with program segments consisting
1443 of combined data+bss.
1445 To handle the above situation, this routine generates TWO bfd sections
1446 for the single program segment. The first has the length specified by
1447 the file size of the segment, and the second has the length specified
1448 by the difference between the two sizes. In effect, the segment is split
1449 into it's initialized and uninitialized parts.
1454 _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, typename
)
1456 Elf_Internal_Phdr
*hdr
;
1458 const char *typename
;
1465 split
= ((hdr
->p_memsz
> 0)
1466 && (hdr
->p_filesz
> 0)
1467 && (hdr
->p_memsz
> hdr
->p_filesz
));
1468 sprintf (namebuf
, "%s%d%s", typename
, index
, split
? "a" : "");
1469 name
= bfd_alloc (abfd
, strlen (namebuf
) + 1);
1472 strcpy (name
, namebuf
);
1473 newsect
= bfd_make_section (abfd
, name
);
1474 if (newsect
== NULL
)
1476 newsect
->vma
= hdr
->p_vaddr
;
1477 newsect
->lma
= hdr
->p_paddr
;
1478 newsect
->_raw_size
= hdr
->p_filesz
;
1479 newsect
->filepos
= hdr
->p_offset
;
1480 newsect
->flags
|= SEC_HAS_CONTENTS
;
1481 if (hdr
->p_type
== PT_LOAD
)
1483 newsect
->flags
|= SEC_ALLOC
;
1484 newsect
->flags
|= SEC_LOAD
;
1485 if (hdr
->p_flags
& PF_X
)
1487 /* FIXME: all we known is that it has execute PERMISSION,
1489 newsect
->flags
|= SEC_CODE
;
1492 if (!(hdr
->p_flags
& PF_W
))
1494 newsect
->flags
|= SEC_READONLY
;
1499 sprintf (namebuf
, "%s%db", typename
, index
);
1500 name
= bfd_alloc (abfd
, strlen (namebuf
) + 1);
1503 strcpy (name
, namebuf
);
1504 newsect
= bfd_make_section (abfd
, name
);
1505 if (newsect
== NULL
)
1507 newsect
->vma
= hdr
->p_vaddr
+ hdr
->p_filesz
;
1508 newsect
->lma
= hdr
->p_paddr
+ hdr
->p_filesz
;
1509 newsect
->_raw_size
= hdr
->p_memsz
- hdr
->p_filesz
;
1510 if (hdr
->p_type
== PT_LOAD
)
1512 newsect
->flags
|= SEC_ALLOC
;
1513 if (hdr
->p_flags
& PF_X
)
1514 newsect
->flags
|= SEC_CODE
;
1516 if (!(hdr
->p_flags
& PF_W
))
1517 newsect
->flags
|= SEC_READONLY
;
1524 bfd_section_from_phdr (abfd
, hdr
, index
)
1526 Elf_Internal_Phdr
*hdr
;
1529 struct elf_backend_data
*bed
;
1531 switch (hdr
->p_type
)
1534 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "null");
1537 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "load");
1540 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "dynamic");
1543 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "interp");
1546 if (! _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "note"))
1548 if (! elfcore_read_notes (abfd
, hdr
->p_offset
, hdr
->p_filesz
))
1553 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "shlib");
1556 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "phdr");
1559 /* Check for any processor-specific program segment types.
1560 If no handler for them, default to making "segment" sections. */
1561 bed
= get_elf_backend_data (abfd
);
1562 if (bed
->elf_backend_section_from_phdr
)
1563 return (*bed
->elf_backend_section_from_phdr
) (abfd
, hdr
, index
);
1565 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "segment");
1569 /* Initialize REL_HDR, the section-header for new section, containing
1570 relocations against ASECT. If USE_RELA_P is true, we use RELA
1571 relocations; otherwise, we use REL relocations. */
1574 _bfd_elf_init_reloc_shdr (abfd
, rel_hdr
, asect
, use_rela_p
)
1576 Elf_Internal_Shdr
*rel_hdr
;
1581 struct elf_backend_data
*bed
;
1583 bed
= get_elf_backend_data (abfd
);
1584 name
= bfd_alloc (abfd
, sizeof ".rela" + strlen (asect
->name
));
1587 sprintf (name
, "%s%s", use_rela_p
? ".rela" : ".rel", asect
->name
);
1589 (unsigned int) _bfd_stringtab_add (elf_shstrtab (abfd
), name
,
1591 if (rel_hdr
->sh_name
== (unsigned int) -1)
1593 rel_hdr
->sh_type
= use_rela_p
? SHT_RELA
: SHT_REL
;
1594 rel_hdr
->sh_entsize
= (use_rela_p
1595 ? bed
->s
->sizeof_rela
1596 : bed
->s
->sizeof_rel
);
1597 rel_hdr
->sh_addralign
= bed
->s
->file_align
;
1598 rel_hdr
->sh_flags
= 0;
1599 rel_hdr
->sh_addr
= 0;
1600 rel_hdr
->sh_size
= 0;
1601 rel_hdr
->sh_offset
= 0;
1606 /* Set up an ELF internal section header for a section. */
1610 elf_fake_sections (abfd
, asect
, failedptrarg
)
1615 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1616 boolean
*failedptr
= (boolean
*) failedptrarg
;
1617 Elf_Internal_Shdr
*this_hdr
;
1621 /* We already failed; just get out of the bfd_map_over_sections
1626 this_hdr
= &elf_section_data (asect
)->this_hdr
;
1628 this_hdr
->sh_name
= (unsigned long) _bfd_stringtab_add (elf_shstrtab (abfd
),
1631 if (this_hdr
->sh_name
== (unsigned long) -1)
1637 this_hdr
->sh_flags
= 0;
1639 if ((asect
->flags
& SEC_ALLOC
) != 0
1640 || asect
->user_set_vma
)
1641 this_hdr
->sh_addr
= asect
->vma
;
1643 this_hdr
->sh_addr
= 0;
1645 this_hdr
->sh_offset
= 0;
1646 this_hdr
->sh_size
= asect
->_raw_size
;
1647 this_hdr
->sh_link
= 0;
1648 this_hdr
->sh_addralign
= 1 << asect
->alignment_power
;
1649 /* The sh_entsize and sh_info fields may have been set already by
1650 copy_private_section_data. */
1652 this_hdr
->bfd_section
= asect
;
1653 this_hdr
->contents
= NULL
;
1655 /* FIXME: This should not be based on section names. */
1656 if (strcmp (asect
->name
, ".dynstr") == 0)
1657 this_hdr
->sh_type
= SHT_STRTAB
;
1658 else if (strcmp (asect
->name
, ".hash") == 0)
1660 this_hdr
->sh_type
= SHT_HASH
;
1661 this_hdr
->sh_entsize
= bed
->s
->sizeof_hash_entry
;
1663 else if (strcmp (asect
->name
, ".dynsym") == 0)
1665 this_hdr
->sh_type
= SHT_DYNSYM
;
1666 this_hdr
->sh_entsize
= bed
->s
->sizeof_sym
;
1668 else if (strcmp (asect
->name
, ".dynamic") == 0)
1670 this_hdr
->sh_type
= SHT_DYNAMIC
;
1671 this_hdr
->sh_entsize
= bed
->s
->sizeof_dyn
;
1673 else if (strncmp (asect
->name
, ".rela", 5) == 0
1674 && get_elf_backend_data (abfd
)->may_use_rela_p
)
1676 this_hdr
->sh_type
= SHT_RELA
;
1677 this_hdr
->sh_entsize
= bed
->s
->sizeof_rela
;
1679 else if (strncmp (asect
->name
, ".rel", 4) == 0
1680 && get_elf_backend_data (abfd
)->may_use_rel_p
)
1682 this_hdr
->sh_type
= SHT_REL
;
1683 this_hdr
->sh_entsize
= bed
->s
->sizeof_rel
;
1685 else if (strncmp (asect
->name
, ".note", 5) == 0)
1686 this_hdr
->sh_type
= SHT_NOTE
;
1687 else if (strncmp (asect
->name
, ".stab", 5) == 0
1688 && strcmp (asect
->name
+ strlen (asect
->name
) - 3, "str") == 0)
1689 this_hdr
->sh_type
= SHT_STRTAB
;
1690 else if (strcmp (asect
->name
, ".gnu.version") == 0)
1692 this_hdr
->sh_type
= SHT_GNU_versym
;
1693 this_hdr
->sh_entsize
= sizeof (Elf_External_Versym
);
1695 else if (strcmp (asect
->name
, ".gnu.version_d") == 0)
1697 this_hdr
->sh_type
= SHT_GNU_verdef
;
1698 this_hdr
->sh_entsize
= 0;
1699 /* objcopy or strip will copy over sh_info, but may not set
1700 cverdefs. The linker will set cverdefs, but sh_info will be
1702 if (this_hdr
->sh_info
== 0)
1703 this_hdr
->sh_info
= elf_tdata (abfd
)->cverdefs
;
1705 BFD_ASSERT (elf_tdata (abfd
)->cverdefs
== 0
1706 || this_hdr
->sh_info
== elf_tdata (abfd
)->cverdefs
);
1708 else if (strcmp (asect
->name
, ".gnu.version_r") == 0)
1710 this_hdr
->sh_type
= SHT_GNU_verneed
;
1711 this_hdr
->sh_entsize
= 0;
1712 /* objcopy or strip will copy over sh_info, but may not set
1713 cverrefs. The linker will set cverrefs, but sh_info will be
1715 if (this_hdr
->sh_info
== 0)
1716 this_hdr
->sh_info
= elf_tdata (abfd
)->cverrefs
;
1718 BFD_ASSERT (elf_tdata (abfd
)->cverrefs
== 0
1719 || this_hdr
->sh_info
== elf_tdata (abfd
)->cverrefs
);
1721 else if ((asect
->flags
& SEC_ALLOC
) != 0
1722 && (asect
->flags
& SEC_LOAD
) != 0)
1723 this_hdr
->sh_type
= SHT_PROGBITS
;
1724 else if ((asect
->flags
& SEC_ALLOC
) != 0
1725 && ((asect
->flags
& SEC_LOAD
) == 0))
1726 this_hdr
->sh_type
= SHT_NOBITS
;
1730 this_hdr
->sh_type
= SHT_PROGBITS
;
1733 if ((asect
->flags
& SEC_ALLOC
) != 0)
1734 this_hdr
->sh_flags
|= SHF_ALLOC
;
1735 if ((asect
->flags
& SEC_READONLY
) == 0)
1736 this_hdr
->sh_flags
|= SHF_WRITE
;
1737 if ((asect
->flags
& SEC_CODE
) != 0)
1738 this_hdr
->sh_flags
|= SHF_EXECINSTR
;
1740 /* Check for processor-specific section types. */
1741 if (bed
->elf_backend_fake_sections
)
1742 (*bed
->elf_backend_fake_sections
) (abfd
, this_hdr
, asect
);
1744 /* If the section has relocs, set up a section header for the
1745 SHT_REL[A] section. If two relocation sections are required for
1746 this section, it is up to the processor-specific back-end to
1747 create the other. */
1748 if ((asect
->flags
& SEC_RELOC
) != 0
1749 && !_bfd_elf_init_reloc_shdr (abfd
,
1750 &elf_section_data (asect
)->rel_hdr
,
1752 elf_section_data (asect
)->use_rela_p
))
1756 /* Get elf arch size (32 / 64).
1757 Returns -1 if not elf. */
1760 bfd_elf_get_arch_size (abfd
)
1763 if (abfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
1765 bfd_set_error (bfd_error_wrong_format
);
1769 return (get_elf_backend_data (abfd
))->s
->arch_size
;
1772 /* Assign all ELF section numbers. The dummy first section is handled here
1773 too. The link/info pointers for the standard section types are filled
1774 in here too, while we're at it. */
1777 assign_section_numbers (abfd
)
1780 struct elf_obj_tdata
*t
= elf_tdata (abfd
);
1782 unsigned int section_number
;
1783 Elf_Internal_Shdr
**i_shdrp
;
1787 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
1789 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
1791 d
->this_idx
= section_number
++;
1792 if ((sec
->flags
& SEC_RELOC
) == 0)
1795 d
->rel_idx
= section_number
++;
1798 d
->rel_idx2
= section_number
++;
1803 t
->shstrtab_section
= section_number
++;
1804 elf_elfheader (abfd
)->e_shstrndx
= t
->shstrtab_section
;
1805 t
->shstrtab_hdr
.sh_size
= _bfd_stringtab_size (elf_shstrtab (abfd
));
1807 if (bfd_get_symcount (abfd
) > 0)
1809 t
->symtab_section
= section_number
++;
1810 t
->strtab_section
= section_number
++;
1813 elf_elfheader (abfd
)->e_shnum
= section_number
;
1815 /* Set up the list of section header pointers, in agreement with the
1817 i_shdrp
= ((Elf_Internal_Shdr
**)
1818 bfd_alloc (abfd
, section_number
* sizeof (Elf_Internal_Shdr
*)));
1819 if (i_shdrp
== NULL
)
1822 i_shdrp
[0] = ((Elf_Internal_Shdr
*)
1823 bfd_alloc (abfd
, sizeof (Elf_Internal_Shdr
)));
1824 if (i_shdrp
[0] == NULL
)
1826 bfd_release (abfd
, i_shdrp
);
1829 memset (i_shdrp
[0], 0, sizeof (Elf_Internal_Shdr
));
1831 elf_elfsections (abfd
) = i_shdrp
;
1833 i_shdrp
[t
->shstrtab_section
] = &t
->shstrtab_hdr
;
1834 if (bfd_get_symcount (abfd
) > 0)
1836 i_shdrp
[t
->symtab_section
] = &t
->symtab_hdr
;
1837 i_shdrp
[t
->strtab_section
] = &t
->strtab_hdr
;
1838 t
->symtab_hdr
.sh_link
= t
->strtab_section
;
1840 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
1842 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
1846 i_shdrp
[d
->this_idx
] = &d
->this_hdr
;
1847 if (d
->rel_idx
!= 0)
1848 i_shdrp
[d
->rel_idx
] = &d
->rel_hdr
;
1849 if (d
->rel_idx2
!= 0)
1850 i_shdrp
[d
->rel_idx2
] = d
->rel_hdr2
;
1852 /* Fill in the sh_link and sh_info fields while we're at it. */
1854 /* sh_link of a reloc section is the section index of the symbol
1855 table. sh_info is the section index of the section to which
1856 the relocation entries apply. */
1857 if (d
->rel_idx
!= 0)
1859 d
->rel_hdr
.sh_link
= t
->symtab_section
;
1860 d
->rel_hdr
.sh_info
= d
->this_idx
;
1862 if (d
->rel_idx2
!= 0)
1864 d
->rel_hdr2
->sh_link
= t
->symtab_section
;
1865 d
->rel_hdr2
->sh_info
= d
->this_idx
;
1868 switch (d
->this_hdr
.sh_type
)
1872 /* A reloc section which we are treating as a normal BFD
1873 section. sh_link is the section index of the symbol
1874 table. sh_info is the section index of the section to
1875 which the relocation entries apply. We assume that an
1876 allocated reloc section uses the dynamic symbol table.
1877 FIXME: How can we be sure? */
1878 s
= bfd_get_section_by_name (abfd
, ".dynsym");
1880 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
1882 /* We look up the section the relocs apply to by name. */
1884 if (d
->this_hdr
.sh_type
== SHT_REL
)
1888 s
= bfd_get_section_by_name (abfd
, name
);
1890 d
->this_hdr
.sh_info
= elf_section_data (s
)->this_idx
;
1894 /* We assume that a section named .stab*str is a stabs
1895 string section. We look for a section with the same name
1896 but without the trailing ``str'', and set its sh_link
1897 field to point to this section. */
1898 if (strncmp (sec
->name
, ".stab", sizeof ".stab" - 1) == 0
1899 && strcmp (sec
->name
+ strlen (sec
->name
) - 3, "str") == 0)
1904 len
= strlen (sec
->name
);
1905 alc
= (char *) bfd_malloc (len
- 2);
1908 strncpy (alc
, sec
->name
, len
- 3);
1909 alc
[len
- 3] = '\0';
1910 s
= bfd_get_section_by_name (abfd
, alc
);
1914 elf_section_data (s
)->this_hdr
.sh_link
= d
->this_idx
;
1916 /* This is a .stab section. */
1917 elf_section_data (s
)->this_hdr
.sh_entsize
=
1918 4 + 2 * bfd_elf_get_arch_size (abfd
) / 8;
1925 case SHT_GNU_verneed
:
1926 case SHT_GNU_verdef
:
1927 /* sh_link is the section header index of the string table
1928 used for the dynamic entries, or the symbol table, or the
1930 s
= bfd_get_section_by_name (abfd
, ".dynstr");
1932 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
1936 case SHT_GNU_versym
:
1937 /* sh_link is the section header index of the symbol table
1938 this hash table or version table is for. */
1939 s
= bfd_get_section_by_name (abfd
, ".dynsym");
1941 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
1949 /* Map symbol from it's internal number to the external number, moving
1950 all local symbols to be at the head of the list. */
1953 sym_is_global (abfd
, sym
)
1957 /* If the backend has a special mapping, use it. */
1958 if (get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
1959 return ((*get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
1962 return ((sym
->flags
& (BSF_GLOBAL
| BSF_WEAK
)) != 0
1963 || bfd_is_und_section (bfd_get_section (sym
))
1964 || bfd_is_com_section (bfd_get_section (sym
)));
1968 elf_map_symbols (abfd
)
1971 int symcount
= bfd_get_symcount (abfd
);
1972 asymbol
**syms
= bfd_get_outsymbols (abfd
);
1973 asymbol
**sect_syms
;
1975 int num_globals
= 0;
1976 int num_locals2
= 0;
1977 int num_globals2
= 0;
1979 int num_sections
= 0;
1986 fprintf (stderr
, "elf_map_symbols\n");
1990 /* Add a section symbol for each BFD section. FIXME: Is this really
1992 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
1994 if (max_index
< asect
->index
)
1995 max_index
= asect
->index
;
1999 sect_syms
= (asymbol
**) bfd_zalloc (abfd
, max_index
* sizeof (asymbol
*));
2000 if (sect_syms
== NULL
)
2002 elf_section_syms (abfd
) = sect_syms
;
2004 for (idx
= 0; idx
< symcount
; idx
++)
2008 if ((sym
->flags
& BSF_SECTION_SYM
) != 0
2015 if (sec
->owner
!= NULL
)
2017 if (sec
->owner
!= abfd
)
2019 if (sec
->output_offset
!= 0)
2022 sec
= sec
->output_section
;
2024 /* Empty sections in the input files may have had a section
2025 symbol created for them. (See the comment near the end of
2026 _bfd_generic_link_output_symbols in linker.c). If the linker
2027 script discards such sections then we will reach this point.
2028 Since we know that we cannot avoid this case, we detect it
2029 and skip the abort and the assignment to the sect_syms array.
2030 To reproduce this particular case try running the linker
2031 testsuite test ld-scripts/weak.exp for an ELF port that uses
2032 the generic linker. */
2033 if (sec
->owner
== NULL
)
2036 BFD_ASSERT (sec
->owner
== abfd
);
2038 sect_syms
[sec
->index
] = syms
[idx
];
2043 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2045 if (sect_syms
[asect
->index
] != NULL
)
2048 sym
= bfd_make_empty_symbol (abfd
);
2051 sym
->the_bfd
= abfd
;
2052 sym
->name
= asect
->name
;
2054 /* Set the flags to 0 to indicate that this one was newly added. */
2056 sym
->section
= asect
;
2057 sect_syms
[asect
->index
] = sym
;
2061 _("creating section symbol, name = %s, value = 0x%.8lx, index = %d, section = 0x%.8lx\n"),
2062 asect
->name
, (long) asect
->vma
, asect
->index
, (long) asect
);
2066 /* Classify all of the symbols. */
2067 for (idx
= 0; idx
< symcount
; idx
++)
2069 if (!sym_is_global (abfd
, syms
[idx
]))
2074 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2076 if (sect_syms
[asect
->index
] != NULL
2077 && sect_syms
[asect
->index
]->flags
== 0)
2079 sect_syms
[asect
->index
]->flags
= BSF_SECTION_SYM
;
2080 if (!sym_is_global (abfd
, sect_syms
[asect
->index
]))
2084 sect_syms
[asect
->index
]->flags
= 0;
2088 /* Now sort the symbols so the local symbols are first. */
2089 new_syms
= ((asymbol
**)
2091 (num_locals
+ num_globals
) * sizeof (asymbol
*)));
2092 if (new_syms
== NULL
)
2095 for (idx
= 0; idx
< symcount
; idx
++)
2097 asymbol
*sym
= syms
[idx
];
2100 if (!sym_is_global (abfd
, sym
))
2103 i
= num_locals
+ num_globals2
++;
2105 sym
->udata
.i
= i
+ 1;
2107 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2109 if (sect_syms
[asect
->index
] != NULL
2110 && sect_syms
[asect
->index
]->flags
== 0)
2112 asymbol
*sym
= sect_syms
[asect
->index
];
2115 sym
->flags
= BSF_SECTION_SYM
;
2116 if (!sym_is_global (abfd
, sym
))
2119 i
= num_locals
+ num_globals2
++;
2121 sym
->udata
.i
= i
+ 1;
2125 bfd_set_symtab (abfd
, new_syms
, num_locals
+ num_globals
);
2127 elf_num_locals (abfd
) = num_locals
;
2128 elf_num_globals (abfd
) = num_globals
;
2132 /* Align to the maximum file alignment that could be required for any
2133 ELF data structure. */
2135 static INLINE file_ptr align_file_position
PARAMS ((file_ptr
, int));
2136 static INLINE file_ptr
2137 align_file_position (off
, align
)
2141 return (off
+ align
- 1) & ~(align
- 1);
2144 /* Assign a file position to a section, optionally aligning to the
2145 required section alignment. */
2148 _bfd_elf_assign_file_position_for_section (i_shdrp
, offset
, align
)
2149 Elf_Internal_Shdr
*i_shdrp
;
2157 al
= i_shdrp
->sh_addralign
;
2159 offset
= BFD_ALIGN (offset
, al
);
2161 i_shdrp
->sh_offset
= offset
;
2162 if (i_shdrp
->bfd_section
!= NULL
)
2163 i_shdrp
->bfd_section
->filepos
= offset
;
2164 if (i_shdrp
->sh_type
!= SHT_NOBITS
)
2165 offset
+= i_shdrp
->sh_size
;
2169 /* Compute the file positions we are going to put the sections at, and
2170 otherwise prepare to begin writing out the ELF file. If LINK_INFO
2171 is not NULL, this is being called by the ELF backend linker. */
2174 _bfd_elf_compute_section_file_positions (abfd
, link_info
)
2176 struct bfd_link_info
*link_info
;
2178 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2180 struct bfd_strtab_hash
*strtab
;
2181 Elf_Internal_Shdr
*shstrtab_hdr
;
2183 if (abfd
->output_has_begun
)
2186 /* Do any elf backend specific processing first. */
2187 if (bed
->elf_backend_begin_write_processing
)
2188 (*bed
->elf_backend_begin_write_processing
) (abfd
, link_info
);
2190 if (! prep_headers (abfd
))
2193 /* Post process the headers if necessary. */
2194 if (bed
->elf_backend_post_process_headers
)
2195 (*bed
->elf_backend_post_process_headers
) (abfd
, link_info
);
2198 bfd_map_over_sections (abfd
, elf_fake_sections
, &failed
);
2202 if (!assign_section_numbers (abfd
))
2205 /* The backend linker builds symbol table information itself. */
2206 if (link_info
== NULL
&& bfd_get_symcount (abfd
) > 0)
2208 /* Non-zero if doing a relocatable link. */
2209 int relocatable_p
= ! (abfd
->flags
& (EXEC_P
| DYNAMIC
));
2211 if (! swap_out_syms (abfd
, &strtab
, relocatable_p
))
2215 shstrtab_hdr
= &elf_tdata (abfd
)->shstrtab_hdr
;
2216 /* sh_name was set in prep_headers. */
2217 shstrtab_hdr
->sh_type
= SHT_STRTAB
;
2218 shstrtab_hdr
->sh_flags
= 0;
2219 shstrtab_hdr
->sh_addr
= 0;
2220 shstrtab_hdr
->sh_size
= _bfd_stringtab_size (elf_shstrtab (abfd
));
2221 shstrtab_hdr
->sh_entsize
= 0;
2222 shstrtab_hdr
->sh_link
= 0;
2223 shstrtab_hdr
->sh_info
= 0;
2224 /* sh_offset is set in assign_file_positions_except_relocs. */
2225 shstrtab_hdr
->sh_addralign
= 1;
2227 if (!assign_file_positions_except_relocs (abfd
))
2230 if (link_info
== NULL
&& bfd_get_symcount (abfd
) > 0)
2233 Elf_Internal_Shdr
*hdr
;
2235 off
= elf_tdata (abfd
)->next_file_pos
;
2237 hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2238 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
2240 hdr
= &elf_tdata (abfd
)->strtab_hdr
;
2241 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
2243 elf_tdata (abfd
)->next_file_pos
= off
;
2245 /* Now that we know where the .strtab section goes, write it
2247 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
2248 || ! _bfd_stringtab_emit (abfd
, strtab
))
2250 _bfd_stringtab_free (strtab
);
2253 abfd
->output_has_begun
= true;
2258 /* Create a mapping from a set of sections to a program segment. */
2260 static INLINE
struct elf_segment_map
*
2261 make_mapping (abfd
, sections
, from
, to
, phdr
)
2263 asection
**sections
;
2268 struct elf_segment_map
*m
;
2272 m
= ((struct elf_segment_map
*)
2274 (sizeof (struct elf_segment_map
)
2275 + (to
- from
- 1) * sizeof (asection
*))));
2279 m
->p_type
= PT_LOAD
;
2280 for (i
= from
, hdrpp
= sections
+ from
; i
< to
; i
++, hdrpp
++)
2281 m
->sections
[i
- from
] = *hdrpp
;
2282 m
->count
= to
- from
;
2284 if (from
== 0 && phdr
)
2286 /* Include the headers in the first PT_LOAD segment. */
2287 m
->includes_filehdr
= 1;
2288 m
->includes_phdrs
= 1;
2294 /* Set up a mapping from BFD sections to program segments. */
2297 map_sections_to_segments (abfd
)
2300 asection
**sections
= NULL
;
2304 struct elf_segment_map
*mfirst
;
2305 struct elf_segment_map
**pm
;
2306 struct elf_segment_map
*m
;
2308 unsigned int phdr_index
;
2309 bfd_vma maxpagesize
;
2311 boolean phdr_in_segment
= true;
2315 if (elf_tdata (abfd
)->segment_map
!= NULL
)
2318 if (bfd_count_sections (abfd
) == 0)
2321 /* Select the allocated sections, and sort them. */
2323 sections
= (asection
**) bfd_malloc (bfd_count_sections (abfd
)
2324 * sizeof (asection
*));
2325 if (sections
== NULL
)
2329 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
2331 if ((s
->flags
& SEC_ALLOC
) != 0)
2337 BFD_ASSERT (i
<= bfd_count_sections (abfd
));
2340 qsort (sections
, (size_t) count
, sizeof (asection
*), elf_sort_sections
);
2342 /* Build the mapping. */
2347 /* If we have a .interp section, then create a PT_PHDR segment for
2348 the program headers and a PT_INTERP segment for the .interp
2350 s
= bfd_get_section_by_name (abfd
, ".interp");
2351 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
2353 m
= ((struct elf_segment_map
*)
2354 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
)));
2358 m
->p_type
= PT_PHDR
;
2359 /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */
2360 m
->p_flags
= PF_R
| PF_X
;
2361 m
->p_flags_valid
= 1;
2362 m
->includes_phdrs
= 1;
2367 m
= ((struct elf_segment_map
*)
2368 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
)));
2372 m
->p_type
= PT_INTERP
;
2380 /* Look through the sections. We put sections in the same program
2381 segment when the start of the second section can be placed within
2382 a few bytes of the end of the first section. */
2385 maxpagesize
= get_elf_backend_data (abfd
)->maxpagesize
;
2387 dynsec
= bfd_get_section_by_name (abfd
, ".dynamic");
2389 && (dynsec
->flags
& SEC_LOAD
) == 0)
2392 /* Deal with -Ttext or something similar such that the first section
2393 is not adjacent to the program headers. This is an
2394 approximation, since at this point we don't know exactly how many
2395 program headers we will need. */
2398 bfd_size_type phdr_size
;
2400 phdr_size
= elf_tdata (abfd
)->program_header_size
;
2402 phdr_size
= get_elf_backend_data (abfd
)->s
->sizeof_phdr
;
2403 if ((abfd
->flags
& D_PAGED
) == 0
2404 || sections
[0]->lma
< phdr_size
2405 || sections
[0]->lma
% maxpagesize
< phdr_size
% maxpagesize
)
2406 phdr_in_segment
= false;
2409 for (i
= 0, hdrpp
= sections
; i
< count
; i
++, hdrpp
++)
2412 boolean new_segment
;
2416 /* See if this section and the last one will fit in the same
2419 if (last_hdr
== NULL
)
2421 /* If we don't have a segment yet, then we don't need a new
2422 one (we build the last one after this loop). */
2423 new_segment
= false;
2425 else if (last_hdr
->lma
- last_hdr
->vma
!= hdr
->lma
- hdr
->vma
)
2427 /* If this section has a different relation between the
2428 virtual address and the load address, then we need a new
2432 else if (BFD_ALIGN (last_hdr
->lma
+ last_hdr
->_raw_size
, maxpagesize
)
2433 < BFD_ALIGN (hdr
->lma
, maxpagesize
))
2435 /* If putting this section in this segment would force us to
2436 skip a page in the segment, then we need a new segment. */
2439 else if ((last_hdr
->flags
& SEC_LOAD
) == 0
2440 && (hdr
->flags
& SEC_LOAD
) != 0)
2442 /* We don't want to put a loadable section after a
2443 nonloadable section in the same segment. */
2446 else if ((abfd
->flags
& D_PAGED
) == 0)
2448 /* If the file is not demand paged, which means that we
2449 don't require the sections to be correctly aligned in the
2450 file, then there is no other reason for a new segment. */
2451 new_segment
= false;
2454 && (hdr
->flags
& SEC_READONLY
) == 0
2455 && (BFD_ALIGN (last_hdr
->lma
+ last_hdr
->_raw_size
, maxpagesize
)
2458 /* We don't want to put a writable section in a read only
2459 segment, unless they are on the same page in memory
2460 anyhow. We already know that the last section does not
2461 bring us past the current section on the page, so the
2462 only case in which the new section is not on the same
2463 page as the previous section is when the previous section
2464 ends precisely on a page boundary. */
2469 /* Otherwise, we can use the same segment. */
2470 new_segment
= false;
2475 if ((hdr
->flags
& SEC_READONLY
) == 0)
2481 /* We need a new program segment. We must create a new program
2482 header holding all the sections from phdr_index until hdr. */
2484 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_segment
);
2491 if ((hdr
->flags
& SEC_READONLY
) == 0)
2498 phdr_in_segment
= false;
2501 /* Create a final PT_LOAD program segment. */
2502 if (last_hdr
!= NULL
)
2504 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_segment
);
2512 /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */
2515 m
= ((struct elf_segment_map
*)
2516 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
)));
2520 m
->p_type
= PT_DYNAMIC
;
2522 m
->sections
[0] = dynsec
;
2528 /* For each loadable .note section, add a PT_NOTE segment. We don't
2529 use bfd_get_section_by_name, because if we link together
2530 nonloadable .note sections and loadable .note sections, we will
2531 generate two .note sections in the output file. FIXME: Using
2532 names for section types is bogus anyhow. */
2533 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
2535 if ((s
->flags
& SEC_LOAD
) != 0
2536 && strncmp (s
->name
, ".note", 5) == 0)
2538 m
= ((struct elf_segment_map
*)
2539 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
)));
2543 m
->p_type
= PT_NOTE
;
2555 elf_tdata (abfd
)->segment_map
= mfirst
;
2559 if (sections
!= NULL
)
2564 /* Sort sections by address. */
2567 elf_sort_sections (arg1
, arg2
)
2571 const asection
*sec1
= *(const asection
**) arg1
;
2572 const asection
*sec2
= *(const asection
**) arg2
;
2574 /* Sort by LMA first, since this is the address used to
2575 place the section into a segment. */
2576 if (sec1
->lma
< sec2
->lma
)
2578 else if (sec1
->lma
> sec2
->lma
)
2581 /* Then sort by VMA. Normally the LMA and the VMA will be
2582 the same, and this will do nothing. */
2583 if (sec1
->vma
< sec2
->vma
)
2585 else if (sec1
->vma
> sec2
->vma
)
2588 /* Put !SEC_LOAD sections after SEC_LOAD ones. */
2590 #define TOEND(x) (((x)->flags & SEC_LOAD) == 0)
2595 return sec1
->target_index
- sec2
->target_index
;
2605 /* Sort by size, to put zero sized sections before others at the
2608 if (sec1
->_raw_size
< sec2
->_raw_size
)
2610 if (sec1
->_raw_size
> sec2
->_raw_size
)
2613 return sec1
->target_index
- sec2
->target_index
;
2616 /* Assign file positions to the sections based on the mapping from
2617 sections to segments. This function also sets up some fields in
2618 the file header, and writes out the program headers. */
2621 assign_file_positions_for_segments (abfd
)
2624 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2626 struct elf_segment_map
*m
;
2628 Elf_Internal_Phdr
*phdrs
;
2630 bfd_vma filehdr_vaddr
, filehdr_paddr
;
2631 bfd_vma phdrs_vaddr
, phdrs_paddr
;
2632 Elf_Internal_Phdr
*p
;
2634 if (elf_tdata (abfd
)->segment_map
== NULL
)
2636 if (! map_sections_to_segments (abfd
))
2640 if (bed
->elf_backend_modify_segment_map
)
2642 if (! (*bed
->elf_backend_modify_segment_map
) (abfd
))
2647 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
2650 elf_elfheader (abfd
)->e_phoff
= bed
->s
->sizeof_ehdr
;
2651 elf_elfheader (abfd
)->e_phentsize
= bed
->s
->sizeof_phdr
;
2652 elf_elfheader (abfd
)->e_phnum
= count
;
2657 /* If we already counted the number of program segments, make sure
2658 that we allocated enough space. This happens when SIZEOF_HEADERS
2659 is used in a linker script. */
2660 alloc
= elf_tdata (abfd
)->program_header_size
/ bed
->s
->sizeof_phdr
;
2661 if (alloc
!= 0 && count
> alloc
)
2663 ((*_bfd_error_handler
)
2664 (_("%s: Not enough room for program headers (allocated %u, need %u)"),
2665 bfd_get_filename (abfd
), alloc
, count
));
2666 bfd_set_error (bfd_error_bad_value
);
2673 phdrs
= ((Elf_Internal_Phdr
*)
2674 bfd_alloc (abfd
, alloc
* sizeof (Elf_Internal_Phdr
)));
2678 off
= bed
->s
->sizeof_ehdr
;
2679 off
+= alloc
* bed
->s
->sizeof_phdr
;
2686 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
2693 /* If elf_segment_map is not from map_sections_to_segments, the
2694 sections may not be correctly ordered. */
2696 qsort (m
->sections
, (size_t) m
->count
, sizeof (asection
*),
2699 p
->p_type
= m
->p_type
;
2700 p
->p_flags
= m
->p_flags
;
2702 if (p
->p_type
== PT_LOAD
2704 && (m
->sections
[0]->flags
& SEC_ALLOC
) != 0)
2706 if ((abfd
->flags
& D_PAGED
) != 0)
2707 off
+= (m
->sections
[0]->vma
- off
) % bed
->maxpagesize
;
2710 bfd_size_type align
;
2713 for (i
= 0, secpp
= m
->sections
; i
< m
->count
; i
++, secpp
++)
2715 bfd_size_type secalign
;
2717 secalign
= bfd_get_section_alignment (abfd
, *secpp
);
2718 if (secalign
> align
)
2722 off
+= (m
->sections
[0]->vma
- off
) % (1 << align
);
2729 p
->p_vaddr
= m
->sections
[0]->vma
;
2731 if (m
->p_paddr_valid
)
2732 p
->p_paddr
= m
->p_paddr
;
2733 else if (m
->count
== 0)
2736 p
->p_paddr
= m
->sections
[0]->lma
;
2738 if (p
->p_type
== PT_LOAD
2739 && (abfd
->flags
& D_PAGED
) != 0)
2740 p
->p_align
= bed
->maxpagesize
;
2741 else if (m
->count
== 0)
2742 p
->p_align
= bed
->s
->file_align
;
2750 if (m
->includes_filehdr
)
2752 if (! m
->p_flags_valid
)
2755 p
->p_filesz
= bed
->s
->sizeof_ehdr
;
2756 p
->p_memsz
= bed
->s
->sizeof_ehdr
;
2759 BFD_ASSERT (p
->p_type
== PT_LOAD
);
2761 if (p
->p_vaddr
< (bfd_vma
) off
)
2763 _bfd_error_handler (_("%s: Not enough room for program headers, try linking with -N"),
2764 bfd_get_filename (abfd
));
2765 bfd_set_error (bfd_error_bad_value
);
2770 if (! m
->p_paddr_valid
)
2773 if (p
->p_type
== PT_LOAD
)
2775 filehdr_vaddr
= p
->p_vaddr
;
2776 filehdr_paddr
= p
->p_paddr
;
2780 if (m
->includes_phdrs
)
2782 if (! m
->p_flags_valid
)
2785 if (m
->includes_filehdr
)
2787 if (p
->p_type
== PT_LOAD
)
2789 phdrs_vaddr
= p
->p_vaddr
+ bed
->s
->sizeof_ehdr
;
2790 phdrs_paddr
= p
->p_paddr
+ bed
->s
->sizeof_ehdr
;
2795 p
->p_offset
= bed
->s
->sizeof_ehdr
;
2799 BFD_ASSERT (p
->p_type
== PT_LOAD
);
2800 p
->p_vaddr
-= off
- p
->p_offset
;
2801 if (! m
->p_paddr_valid
)
2802 p
->p_paddr
-= off
- p
->p_offset
;
2805 if (p
->p_type
== PT_LOAD
)
2807 phdrs_vaddr
= p
->p_vaddr
;
2808 phdrs_paddr
= p
->p_paddr
;
2811 phdrs_vaddr
= bed
->maxpagesize
+ bed
->s
->sizeof_ehdr
;
2814 p
->p_filesz
+= alloc
* bed
->s
->sizeof_phdr
;
2815 p
->p_memsz
+= alloc
* bed
->s
->sizeof_phdr
;
2818 if (p
->p_type
== PT_LOAD
2819 || (p
->p_type
== PT_NOTE
&& bfd_get_format (abfd
) == bfd_core
))
2821 if (! m
->includes_filehdr
&& ! m
->includes_phdrs
)
2827 adjust
= off
- (p
->p_offset
+ p
->p_filesz
);
2828 p
->p_filesz
+= adjust
;
2829 p
->p_memsz
+= adjust
;
2835 for (i
= 0, secpp
= m
->sections
; i
< m
->count
; i
++, secpp
++)
2839 bfd_size_type align
;
2843 align
= 1 << bfd_get_section_alignment (abfd
, sec
);
2845 /* The section may have artificial alignment forced by a
2846 link script. Notice this case by the gap between the
2847 cumulative phdr vma and the section's vma. */
2848 if (p
->p_vaddr
+ p
->p_memsz
< sec
->vma
)
2850 bfd_vma adjust
= sec
->vma
- (p
->p_vaddr
+ p
->p_memsz
);
2852 p
->p_memsz
+= adjust
;
2855 if ((flags
& SEC_LOAD
) != 0)
2856 p
->p_filesz
+= adjust
;
2859 if (p
->p_type
== PT_LOAD
)
2861 bfd_signed_vma adjust
;
2863 if ((flags
& SEC_LOAD
) != 0)
2865 adjust
= sec
->lma
- (p
->p_paddr
+ p
->p_memsz
);
2869 else if ((flags
& SEC_ALLOC
) != 0)
2871 /* The section VMA must equal the file position
2872 modulo the page size. FIXME: I'm not sure if
2873 this adjustment is really necessary. We used to
2874 not have the SEC_LOAD case just above, and then
2875 this was necessary, but now I'm not sure. */
2876 if ((abfd
->flags
& D_PAGED
) != 0)
2877 adjust
= (sec
->vma
- voff
) % bed
->maxpagesize
;
2879 adjust
= (sec
->vma
- voff
) % align
;
2888 (* _bfd_error_handler
)
2889 (_("Error: First section in segment (%s) starts at 0x%x"),
2890 bfd_section_name (abfd
, sec
), sec
->lma
);
2891 (* _bfd_error_handler
)
2892 (_(" whereas segment starts at 0x%x"),
2897 p
->p_memsz
+= adjust
;
2900 if ((flags
& SEC_LOAD
) != 0)
2901 p
->p_filesz
+= adjust
;
2906 /* We check SEC_HAS_CONTENTS here because if NOLOAD is
2907 used in a linker script we may have a section with
2908 SEC_LOAD clear but which is supposed to have
2910 if ((flags
& SEC_LOAD
) != 0
2911 || (flags
& SEC_HAS_CONTENTS
) != 0)
2912 off
+= sec
->_raw_size
;
2914 if ((flags
& SEC_ALLOC
) != 0)
2915 voff
+= sec
->_raw_size
;
2918 if (p
->p_type
== PT_NOTE
&& bfd_get_format (abfd
) == bfd_core
)
2920 if (i
== 0) /* the actual "note" segment */
2921 { /* this one actually contains everything. */
2923 p
->p_filesz
= sec
->_raw_size
;
2924 off
+= sec
->_raw_size
;
2927 else /* fake sections -- don't need to be written */
2931 flags
= sec
->flags
= 0; /* no contents */
2938 p
->p_memsz
+= sec
->_raw_size
;
2940 if ((flags
& SEC_LOAD
) != 0)
2941 p
->p_filesz
+= sec
->_raw_size
;
2943 if (align
> p
->p_align
2944 && (p
->p_type
!= PT_LOAD
|| (abfd
->flags
& D_PAGED
) == 0))
2948 if (! m
->p_flags_valid
)
2951 if ((flags
& SEC_CODE
) != 0)
2953 if ((flags
& SEC_READONLY
) == 0)
2959 /* Now that we have set the section file positions, we can set up
2960 the file positions for the non PT_LOAD segments. */
2961 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
2965 if (p
->p_type
!= PT_LOAD
&& m
->count
> 0)
2967 BFD_ASSERT (! m
->includes_filehdr
&& ! m
->includes_phdrs
);
2968 p
->p_offset
= m
->sections
[0]->filepos
;
2972 if (m
->includes_filehdr
)
2974 p
->p_vaddr
= filehdr_vaddr
;
2975 if (! m
->p_paddr_valid
)
2976 p
->p_paddr
= filehdr_paddr
;
2978 else if (m
->includes_phdrs
)
2980 p
->p_vaddr
= phdrs_vaddr
;
2981 if (! m
->p_paddr_valid
)
2982 p
->p_paddr
= phdrs_paddr
;
2987 /* Clear out any program headers we allocated but did not use. */
2988 for (; count
< alloc
; count
++, p
++)
2990 memset (p
, 0, sizeof *p
);
2991 p
->p_type
= PT_NULL
;
2994 elf_tdata (abfd
)->phdr
= phdrs
;
2996 elf_tdata (abfd
)->next_file_pos
= off
;
2998 /* Write out the program headers. */
2999 if (bfd_seek (abfd
, bed
->s
->sizeof_ehdr
, SEEK_SET
) != 0
3000 || bed
->s
->write_out_phdrs (abfd
, phdrs
, alloc
) != 0)
3006 /* Get the size of the program header.
3008 If this is called by the linker before any of the section VMA's are set, it
3009 can't calculate the correct value for a strange memory layout. This only
3010 happens when SIZEOF_HEADERS is used in a linker script. In this case,
3011 SORTED_HDRS is NULL and we assume the normal scenario of one text and one
3012 data segment (exclusive of .interp and .dynamic).
3014 ??? User written scripts must either not use SIZEOF_HEADERS, or assume there
3015 will be two segments. */
3017 static bfd_size_type
3018 get_program_header_size (abfd
)
3023 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3025 /* We can't return a different result each time we're called. */
3026 if (elf_tdata (abfd
)->program_header_size
!= 0)
3027 return elf_tdata (abfd
)->program_header_size
;
3029 if (elf_tdata (abfd
)->segment_map
!= NULL
)
3031 struct elf_segment_map
*m
;
3034 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
3036 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
3037 return elf_tdata (abfd
)->program_header_size
;
3040 /* Assume we will need exactly two PT_LOAD segments: one for text
3041 and one for data. */
3044 s
= bfd_get_section_by_name (abfd
, ".interp");
3045 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
3047 /* If we have a loadable interpreter section, we need a
3048 PT_INTERP segment. In this case, assume we also need a
3049 PT_PHDR segment, although that may not be true for all
3054 if (bfd_get_section_by_name (abfd
, ".dynamic") != NULL
)
3056 /* We need a PT_DYNAMIC segment. */
3060 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
3062 if ((s
->flags
& SEC_LOAD
) != 0
3063 && strncmp (s
->name
, ".note", 5) == 0)
3065 /* We need a PT_NOTE segment. */
3070 /* Let the backend count up any program headers it might need. */
3071 if (bed
->elf_backend_additional_program_headers
)
3075 a
= (*bed
->elf_backend_additional_program_headers
) (abfd
);
3081 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
3082 return elf_tdata (abfd
)->program_header_size
;
3085 /* Work out the file positions of all the sections. This is called by
3086 _bfd_elf_compute_section_file_positions. All the section sizes and
3087 VMAs must be known before this is called.
3089 We do not consider reloc sections at this point, unless they form
3090 part of the loadable image. Reloc sections are assigned file
3091 positions in assign_file_positions_for_relocs, which is called by
3092 write_object_contents and final_link.
3094 We also don't set the positions of the .symtab and .strtab here. */
3097 assign_file_positions_except_relocs (abfd
)
3100 struct elf_obj_tdata
* const tdata
= elf_tdata (abfd
);
3101 Elf_Internal_Ehdr
* const i_ehdrp
= elf_elfheader (abfd
);
3102 Elf_Internal_Shdr
** const i_shdrpp
= elf_elfsections (abfd
);
3104 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3106 if ((abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0
3107 && bfd_get_format (abfd
) != bfd_core
)
3109 Elf_Internal_Shdr
**hdrpp
;
3112 /* Start after the ELF header. */
3113 off
= i_ehdrp
->e_ehsize
;
3115 /* We are not creating an executable, which means that we are
3116 not creating a program header, and that the actual order of
3117 the sections in the file is unimportant. */
3118 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< i_ehdrp
->e_shnum
; i
++, hdrpp
++)
3120 Elf_Internal_Shdr
*hdr
;
3123 if (hdr
->sh_type
== SHT_REL
|| hdr
->sh_type
== SHT_RELA
)
3125 hdr
->sh_offset
= -1;
3128 if (i
== tdata
->symtab_section
3129 || i
== tdata
->strtab_section
)
3131 hdr
->sh_offset
= -1;
3135 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
3141 Elf_Internal_Shdr
**hdrpp
;
3143 /* Assign file positions for the loaded sections based on the
3144 assignment of sections to segments. */
3145 if (! assign_file_positions_for_segments (abfd
))
3148 /* Assign file positions for the other sections. */
3150 off
= elf_tdata (abfd
)->next_file_pos
;
3151 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< i_ehdrp
->e_shnum
; i
++, hdrpp
++)
3153 Elf_Internal_Shdr
*hdr
;
3156 if (hdr
->bfd_section
!= NULL
3157 && hdr
->bfd_section
->filepos
!= 0)
3158 hdr
->sh_offset
= hdr
->bfd_section
->filepos
;
3159 else if ((hdr
->sh_flags
& SHF_ALLOC
) != 0)
3161 ((*_bfd_error_handler
)
3162 (_("%s: warning: allocated section `%s' not in segment"),
3163 bfd_get_filename (abfd
),
3164 (hdr
->bfd_section
== NULL
3166 : hdr
->bfd_section
->name
)));
3167 if ((abfd
->flags
& D_PAGED
) != 0)
3168 off
+= (hdr
->sh_addr
- off
) % bed
->maxpagesize
;
3170 off
+= (hdr
->sh_addr
- off
) % hdr
->sh_addralign
;
3171 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
,
3174 else if (hdr
->sh_type
== SHT_REL
3175 || hdr
->sh_type
== SHT_RELA
3176 || hdr
== i_shdrpp
[tdata
->symtab_section
]
3177 || hdr
== i_shdrpp
[tdata
->strtab_section
])
3178 hdr
->sh_offset
= -1;
3180 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
3184 /* Place the section headers. */
3185 off
= align_file_position (off
, bed
->s
->file_align
);
3186 i_ehdrp
->e_shoff
= off
;
3187 off
+= i_ehdrp
->e_shnum
* i_ehdrp
->e_shentsize
;
3189 elf_tdata (abfd
)->next_file_pos
= off
;
3198 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
3199 Elf_Internal_Phdr
*i_phdrp
= 0; /* Program header table, internal form */
3200 Elf_Internal_Shdr
**i_shdrp
; /* Section header table, internal form */
3202 struct bfd_strtab_hash
*shstrtab
;
3203 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3205 i_ehdrp
= elf_elfheader (abfd
);
3206 i_shdrp
= elf_elfsections (abfd
);
3208 shstrtab
= _bfd_elf_stringtab_init ();
3209 if (shstrtab
== NULL
)
3212 elf_shstrtab (abfd
) = shstrtab
;
3214 i_ehdrp
->e_ident
[EI_MAG0
] = ELFMAG0
;
3215 i_ehdrp
->e_ident
[EI_MAG1
] = ELFMAG1
;
3216 i_ehdrp
->e_ident
[EI_MAG2
] = ELFMAG2
;
3217 i_ehdrp
->e_ident
[EI_MAG3
] = ELFMAG3
;
3219 i_ehdrp
->e_ident
[EI_CLASS
] = bed
->s
->elfclass
;
3220 i_ehdrp
->e_ident
[EI_DATA
] =
3221 bfd_big_endian (abfd
) ? ELFDATA2MSB
: ELFDATA2LSB
;
3222 i_ehdrp
->e_ident
[EI_VERSION
] = bed
->s
->ev_current
;
3224 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_NONE
;
3225 i_ehdrp
->e_ident
[EI_ABIVERSION
] = 0;
3227 for (count
= EI_PAD
; count
< EI_NIDENT
; count
++)
3228 i_ehdrp
->e_ident
[count
] = 0;
3230 if ((abfd
->flags
& DYNAMIC
) != 0)
3231 i_ehdrp
->e_type
= ET_DYN
;
3232 else if ((abfd
->flags
& EXEC_P
) != 0)
3233 i_ehdrp
->e_type
= ET_EXEC
;
3234 else if (bfd_get_format (abfd
) == bfd_core
)
3235 i_ehdrp
->e_type
= ET_CORE
;
3237 i_ehdrp
->e_type
= ET_REL
;
3239 switch (bfd_get_arch (abfd
))
3241 case bfd_arch_unknown
:
3242 i_ehdrp
->e_machine
= EM_NONE
;
3244 case bfd_arch_sparc
:
3245 if (bfd_elf_get_arch_size (abfd
) == 64)
3246 i_ehdrp
->e_machine
= EM_SPARCV9
;
3248 i_ehdrp
->e_machine
= EM_SPARC
;
3251 i_ehdrp
->e_machine
= EM_S370
;
3254 i_ehdrp
->e_machine
= EM_386
;
3257 i_ehdrp
->e_machine
= EM_IA_64
;
3260 i_ehdrp
->e_machine
= EM_68K
;
3263 i_ehdrp
->e_machine
= EM_88K
;
3266 i_ehdrp
->e_machine
= EM_860
;
3269 i_ehdrp
->e_machine
= EM_960
;
3271 case bfd_arch_mips
: /* MIPS Rxxxx */
3272 i_ehdrp
->e_machine
= EM_MIPS
; /* only MIPS R3000 */
3275 i_ehdrp
->e_machine
= EM_PARISC
;
3277 case bfd_arch_powerpc
:
3278 i_ehdrp
->e_machine
= EM_PPC
;
3280 case bfd_arch_alpha
:
3281 i_ehdrp
->e_machine
= EM_ALPHA
;
3284 i_ehdrp
->e_machine
= EM_SH
;
3287 i_ehdrp
->e_machine
= EM_CYGNUS_D10V
;
3290 i_ehdrp
->e_machine
= EM_CYGNUS_D30V
;
3293 i_ehdrp
->e_machine
= EM_CYGNUS_FR30
;
3295 case bfd_arch_mcore
:
3296 i_ehdrp
->e_machine
= EM_MCORE
;
3299 i_ehdrp
->e_machine
= EM_AVR
;
3302 switch (bfd_get_mach (abfd
))
3305 case 0: i_ehdrp
->e_machine
= EM_CYGNUS_V850
; break;
3309 i_ehdrp
->e_machine
= EM_CYGNUS_ARC
;
3312 i_ehdrp
->e_machine
= EM_ARM
;
3315 i_ehdrp
->e_machine
= EM_CYGNUS_M32R
;
3317 case bfd_arch_mn10200
:
3318 i_ehdrp
->e_machine
= EM_CYGNUS_MN10200
;
3320 case bfd_arch_mn10300
:
3321 i_ehdrp
->e_machine
= EM_CYGNUS_MN10300
;
3324 i_ehdrp
->e_machine
= EM_PJ
;
3326 /* also note that EM_M32, AT&T WE32100 is unknown to bfd */
3328 i_ehdrp
->e_machine
= EM_NONE
;
3330 i_ehdrp
->e_version
= bed
->s
->ev_current
;
3331 i_ehdrp
->e_ehsize
= bed
->s
->sizeof_ehdr
;
3333 /* no program header, for now. */
3334 i_ehdrp
->e_phoff
= 0;
3335 i_ehdrp
->e_phentsize
= 0;
3336 i_ehdrp
->e_phnum
= 0;
3338 /* each bfd section is section header entry */
3339 i_ehdrp
->e_entry
= bfd_get_start_address (abfd
);
3340 i_ehdrp
->e_shentsize
= bed
->s
->sizeof_shdr
;
3342 /* if we're building an executable, we'll need a program header table */
3343 if (abfd
->flags
& EXEC_P
)
3345 /* it all happens later */
3347 i_ehdrp
->e_phentsize
= sizeof (Elf_External_Phdr
);
3349 /* elf_build_phdrs() returns a (NULL-terminated) array of
3350 Elf_Internal_Phdrs */
3351 i_phdrp
= elf_build_phdrs (abfd
, i_ehdrp
, i_shdrp
, &i_ehdrp
->e_phnum
);
3352 i_ehdrp
->e_phoff
= outbase
;
3353 outbase
+= i_ehdrp
->e_phentsize
* i_ehdrp
->e_phnum
;
3358 i_ehdrp
->e_phentsize
= 0;
3360 i_ehdrp
->e_phoff
= 0;
3363 elf_tdata (abfd
)->symtab_hdr
.sh_name
=
3364 (unsigned int) _bfd_stringtab_add (shstrtab
, ".symtab", true, false);
3365 elf_tdata (abfd
)->strtab_hdr
.sh_name
=
3366 (unsigned int) _bfd_stringtab_add (shstrtab
, ".strtab", true, false);
3367 elf_tdata (abfd
)->shstrtab_hdr
.sh_name
=
3368 (unsigned int) _bfd_stringtab_add (shstrtab
, ".shstrtab", true, false);
3369 if (elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
3370 || elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
3371 || elf_tdata (abfd
)->shstrtab_hdr
.sh_name
== (unsigned int) -1)
3377 /* Assign file positions for all the reloc sections which are not part
3378 of the loadable file image. */
3381 _bfd_elf_assign_file_positions_for_relocs (abfd
)
3386 Elf_Internal_Shdr
**shdrpp
;
3388 off
= elf_tdata (abfd
)->next_file_pos
;
3390 for (i
= 1, shdrpp
= elf_elfsections (abfd
) + 1;
3391 i
< elf_elfheader (abfd
)->e_shnum
;
3394 Elf_Internal_Shdr
*shdrp
;
3397 if ((shdrp
->sh_type
== SHT_REL
|| shdrp
->sh_type
== SHT_RELA
)
3398 && shdrp
->sh_offset
== -1)
3399 off
= _bfd_elf_assign_file_position_for_section (shdrp
, off
, true);
3402 elf_tdata (abfd
)->next_file_pos
= off
;
3406 _bfd_elf_write_object_contents (abfd
)
3409 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3410 Elf_Internal_Ehdr
*i_ehdrp
;
3411 Elf_Internal_Shdr
**i_shdrp
;
3415 if (! abfd
->output_has_begun
3416 && ! _bfd_elf_compute_section_file_positions
3417 (abfd
, (struct bfd_link_info
*) NULL
))
3420 i_shdrp
= elf_elfsections (abfd
);
3421 i_ehdrp
= elf_elfheader (abfd
);
3424 bfd_map_over_sections (abfd
, bed
->s
->write_relocs
, &failed
);
3428 _bfd_elf_assign_file_positions_for_relocs (abfd
);
3430 /* After writing the headers, we need to write the sections too... */
3431 for (count
= 1; count
< i_ehdrp
->e_shnum
; count
++)
3433 if (bed
->elf_backend_section_processing
)
3434 (*bed
->elf_backend_section_processing
) (abfd
, i_shdrp
[count
]);
3435 if (i_shdrp
[count
]->contents
)
3437 if (bfd_seek (abfd
, i_shdrp
[count
]->sh_offset
, SEEK_SET
) != 0
3438 || (bfd_write (i_shdrp
[count
]->contents
, i_shdrp
[count
]->sh_size
,
3440 != i_shdrp
[count
]->sh_size
))
3445 /* Write out the section header names. */
3446 if (bfd_seek (abfd
, elf_tdata (abfd
)->shstrtab_hdr
.sh_offset
, SEEK_SET
) != 0
3447 || ! _bfd_stringtab_emit (abfd
, elf_shstrtab (abfd
)))
3450 if (bed
->elf_backend_final_write_processing
)
3451 (*bed
->elf_backend_final_write_processing
) (abfd
,
3452 elf_tdata (abfd
)->linker
);
3454 return bed
->s
->write_shdrs_and_ehdr (abfd
);
3458 _bfd_elf_write_corefile_contents (abfd
)
3461 /* Hopefully this can be done just like an object file. */
3462 return _bfd_elf_write_object_contents (abfd
);
3464 /* given a section, search the header to find them... */
3466 _bfd_elf_section_from_bfd_section (abfd
, asect
)
3470 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3471 Elf_Internal_Shdr
**i_shdrp
= elf_elfsections (abfd
);
3473 Elf_Internal_Shdr
*hdr
;
3474 int maxindex
= elf_elfheader (abfd
)->e_shnum
;
3476 for (index
= 0; index
< maxindex
; index
++)
3478 hdr
= i_shdrp
[index
];
3479 if (hdr
->bfd_section
== asect
)
3483 if (bed
->elf_backend_section_from_bfd_section
)
3485 for (index
= 0; index
< maxindex
; index
++)
3489 hdr
= i_shdrp
[index
];
3491 if ((*bed
->elf_backend_section_from_bfd_section
)
3492 (abfd
, hdr
, asect
, &retval
))
3497 if (bfd_is_abs_section (asect
))
3499 if (bfd_is_com_section (asect
))
3501 if (bfd_is_und_section (asect
))
3504 bfd_set_error (bfd_error_nonrepresentable_section
);
3509 /* Given a BFD symbol, return the index in the ELF symbol table, or -1
3513 _bfd_elf_symbol_from_bfd_symbol (abfd
, asym_ptr_ptr
)
3515 asymbol
**asym_ptr_ptr
;
3517 asymbol
*asym_ptr
= *asym_ptr_ptr
;
3519 flagword flags
= asym_ptr
->flags
;
3521 /* When gas creates relocations against local labels, it creates its
3522 own symbol for the section, but does put the symbol into the
3523 symbol chain, so udata is 0. When the linker is generating
3524 relocatable output, this section symbol may be for one of the
3525 input sections rather than the output section. */
3526 if (asym_ptr
->udata
.i
== 0
3527 && (flags
& BSF_SECTION_SYM
)
3528 && asym_ptr
->section
)
3532 if (asym_ptr
->section
->output_section
!= NULL
)
3533 indx
= asym_ptr
->section
->output_section
->index
;
3535 indx
= asym_ptr
->section
->index
;
3536 if (elf_section_syms (abfd
)[indx
])
3537 asym_ptr
->udata
.i
= elf_section_syms (abfd
)[indx
]->udata
.i
;
3540 idx
= asym_ptr
->udata
.i
;
3544 /* This case can occur when using --strip-symbol on a symbol
3545 which is used in a relocation entry. */
3546 (*_bfd_error_handler
)
3547 (_("%s: symbol `%s' required but not present"),
3548 bfd_get_filename (abfd
), bfd_asymbol_name (asym_ptr
));
3549 bfd_set_error (bfd_error_no_symbols
);
3556 _("elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n"),
3557 (long) asym_ptr
, asym_ptr
->name
, idx
, flags
,
3558 elf_symbol_flags (flags
));
3566 /* Copy private BFD data. This copies any program header information. */
3569 copy_private_bfd_data (ibfd
, obfd
)
3573 Elf_Internal_Ehdr
*iehdr
;
3574 struct elf_segment_map
*mfirst
;
3575 struct elf_segment_map
**pm
;
3576 struct elf_segment_map
*m
;
3577 Elf_Internal_Phdr
*p
;
3579 unsigned int num_segments
;
3580 boolean phdr_included
= false;
3582 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
3583 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
3586 if (elf_tdata (ibfd
)->phdr
== NULL
)
3589 iehdr
= elf_elfheader (ibfd
);
3594 num_segments
= elf_elfheader (ibfd
)->e_phnum
;
3596 #define IS_CONTAINED_BY(addr, len, bottom, phdr) \
3597 ((addr) >= (bottom) \
3598 && ( ((addr) + (len)) <= ((bottom) + (phdr)->p_memsz) \
3599 || ((addr) + (len)) <= ((bottom) + (phdr)->p_filesz)))
3601 /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */
3603 #define IS_COREFILE_NOTE(p, s) \
3604 (p->p_type == PT_NOTE \
3605 && bfd_get_format (ibfd) == bfd_core \
3606 && s->vma == 0 && s->lma == 0 \
3607 && (bfd_vma) s->filepos >= p->p_offset \
3608 && (bfd_vma) s->filepos + s->_raw_size \
3609 <= p->p_offset + p->p_filesz)
3611 /* The complicated case when p_vaddr is 0 is to handle the Solaris
3612 linker, which generates a PT_INTERP section with p_vaddr and
3613 p_memsz set to 0. */
3615 #define IS_SOLARIS_PT_INTERP(p, s) \
3617 && p->p_filesz > 0 \
3618 && (s->flags & SEC_HAS_CONTENTS) != 0 \
3619 && s->_raw_size > 0 \
3620 && (bfd_vma) s->filepos >= p->p_offset \
3621 && ((bfd_vma) s->filepos + s->_raw_size \
3622 <= p->p_offset + p->p_filesz))
3624 /* Scan through the segments specified in the program header
3625 of the input BFD. */
3626 for (i
= 0, p
= elf_tdata (ibfd
)->phdr
; i
< num_segments
; i
++, p
++)
3630 asection
**sections
;
3633 bfd_vma matching_lma
;
3634 bfd_vma suggested_lma
;
3637 /* For each section in the input BFD, decide if it should be
3638 included in the current segment. A section will be included
3639 if it is within the address space of the segment, and it is
3640 an allocated segment, and there is an output section
3641 associated with it. */
3643 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
3644 if (s
->output_section
!= NULL
)
3646 if ((IS_CONTAINED_BY (s
->vma
, s
->_raw_size
, p
->p_vaddr
, p
)
3647 || IS_SOLARIS_PT_INTERP (p
, s
))
3648 && (s
->flags
& SEC_ALLOC
) != 0)
3650 else if (IS_COREFILE_NOTE (p
, s
))
3654 /* Allocate a segment map big enough to contain all of the
3655 sections we have selected. */
3656 m
= ((struct elf_segment_map
*)
3658 (sizeof (struct elf_segment_map
)
3659 + ((size_t) csecs
- 1) * sizeof (asection
*))));
3663 /* Initialise the fields of the segment map. Default to
3664 using the physical address of the segment in the input BFD. */
3666 m
->p_type
= p
->p_type
;
3667 m
->p_flags
= p
->p_flags
;
3668 m
->p_flags_valid
= 1;
3669 m
->p_paddr
= p
->p_paddr
;
3670 m
->p_paddr_valid
= 1;
3672 /* Determine if this segment contains the ELF file header
3673 and if it contains the program headers themselves. */
3674 m
->includes_filehdr
= (p
->p_offset
== 0
3675 && p
->p_filesz
>= iehdr
->e_ehsize
);
3677 m
->includes_phdrs
= 0;
3679 if (! phdr_included
|| p
->p_type
!= PT_LOAD
)
3682 (p
->p_offset
<= (bfd_vma
) iehdr
->e_phoff
3683 && (p
->p_offset
+ p
->p_filesz
3684 >= ((bfd_vma
) iehdr
->e_phoff
3685 + iehdr
->e_phnum
* iehdr
->e_phentsize
)));
3686 if (p
->p_type
== PT_LOAD
&& m
->includes_phdrs
)
3687 phdr_included
= true;
3692 /* Special segments, such as the PT_PHDR segment, may contain
3693 no sections, but ordinary, loadable segments should contain
3696 if (p
->p_type
== PT_LOAD
)
3698 (_("%s: warning: Empty loadable segment detected\n"),
3699 bfd_get_filename (ibfd
));
3708 /* Now scan the sections in the input BFD again and attempt
3709 to add their corresponding output sections to the segment map.
3710 The problem here is how to handle an output section which has
3711 been moved (ie had its LMA changed). There are four possibilities:
3713 1. None of the sections have been moved.
3714 In this case we can continue to use the segment LMA from the
3717 2. All of the sections have been moved by the same amount.
3718 In this case we can change the segment's LMA to match the LMA
3719 of the first section.
3721 3. Some of the sections have been moved, others have not.
3722 In this case those sections which have not been moved can be
3723 placed in the current segment which will have to have its size,
3724 and possibly its LMA changed, and a new segment or segments will
3725 have to be created to contain the other sections.
3727 4. The sections have been moved, but not be the same amount.
3728 In this case we can change the segment's LMA to match the LMA
3729 of the first section and we will have to create a new segment
3730 or segments to contain the other sections.
3732 In order to save time, we allocate an array to hold the section
3733 pointers that we are interested in. As these sections get assigned
3734 to a segment, they are removed from this array. */
3736 sections
= (asection
**) bfd_malloc (sizeof (asection
*) * csecs
);
3737 if (sections
== NULL
)
3740 /* Step One: Scan for segment vs section LMA conflicts.
3741 Also add the sections to the section array allocated above.
3742 Also add the sections to the current segment. In the common
3743 case, where the sections have not been moved, this means that
3744 we have completely filled the segment, and there is nothing
3751 for (j
= 0, s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
3753 os
= s
->output_section
;
3755 if ((((IS_CONTAINED_BY (s
->vma
, s
->_raw_size
, p
->p_vaddr
, p
)
3756 || IS_SOLARIS_PT_INTERP (p
, s
))
3757 && (s
->flags
& SEC_ALLOC
) != 0)
3758 || IS_COREFILE_NOTE (p
, s
))
3763 /* The Solaris native linker always sets p_paddr to 0.
3764 We try to catch that case here, and set it to the
3770 && (os
->vma
== (p
->p_vaddr
3771 + (m
->includes_filehdr
3774 + (m
->includes_phdrs
3775 ? iehdr
->e_phnum
* iehdr
->e_phentsize
3777 m
->p_paddr
= p
->p_vaddr
;
3779 /* Match up the physical address of the segment with the
3780 LMA address of the output section. */
3781 if (IS_CONTAINED_BY (os
->lma
, os
->_raw_size
, m
->p_paddr
, p
)
3782 || IS_COREFILE_NOTE (p
, s
))
3784 if (matching_lma
== 0)
3785 matching_lma
= os
->lma
;
3787 /* We assume that if the section fits within the segment
3788 that it does not overlap any other section within that
3790 m
->sections
[isec
++] = os
;
3792 else if (suggested_lma
== 0)
3793 suggested_lma
= os
->lma
;
3797 BFD_ASSERT (j
== csecs
);
3799 /* Step Two: Adjust the physical address of the current segment,
3803 /* All of the sections fitted within the segment as currently
3804 specified. This is the default case. Add the segment to
3805 the list of built segments and carry on to process the next
3806 program header in the input BFD. */
3816 if (matching_lma
!= 0)
3818 /* At least one section fits inside the current segment.
3819 Keep it, but modify its physical address to match the
3820 LMA of the first section that fitted. */
3822 m
->p_paddr
= matching_lma
;
3826 /* None of the sections fitted inside the current segment.
3827 Change the current segment's physical address to match
3828 the LMA of the first section. */
3830 m
->p_paddr
= suggested_lma
;
3833 /* Offset the segment physical address from the lma to allow
3834 for space taken up by elf headers. */
3835 if (m
->includes_filehdr
)
3836 m
->p_paddr
-= iehdr
->e_ehsize
;
3838 if (m
->includes_phdrs
)
3839 m
->p_paddr
-= iehdr
->e_phnum
* iehdr
->e_phentsize
;
3842 /* Step Three: Loop over the sections again, this time assigning
3843 those that fit to the current segment and remvoing them from the
3844 sections array; but making sure not to leave large gaps. Once all
3845 possible sections have been assigned to the current segment it is
3846 added to the list of built segments and if sections still remain
3847 to be assigned, a new segment is constructed before repeating
3855 /* Fill the current segment with sections that fit. */
3856 for (j
= 0; j
< csecs
; j
++)
3863 os
= s
->output_section
;
3865 if (IS_CONTAINED_BY (os
->lma
, os
->_raw_size
, m
->p_paddr
, p
)
3866 || IS_COREFILE_NOTE (p
, s
))
3870 /* If the first section in a segment does not start at
3871 the beginning of the segment, then something is wrong. */
3872 if (os
->lma
!= (m
->p_paddr
3873 + (m
->includes_filehdr
3874 ? iehdr
->e_ehsize
: 0)
3875 + (m
->includes_phdrs
3876 ? iehdr
->e_phnum
* iehdr
->e_phentsize
3882 asection
* prev_sec
;
3883 bfd_vma maxpagesize
;
3885 prev_sec
= m
->sections
[m
->count
- 1];
3886 maxpagesize
= get_elf_backend_data (obfd
)->maxpagesize
;
3888 /* If the gap between the end of the previous section
3889 and the start of this section is more than maxpagesize
3890 then we need to start a new segment. */
3891 if (BFD_ALIGN (prev_sec
->lma
+ prev_sec
->_raw_size
, maxpagesize
)
3892 < BFD_ALIGN (os
->lma
, maxpagesize
))
3894 if (suggested_lma
== 0)
3895 suggested_lma
= os
->lma
;
3901 m
->sections
[m
->count
++] = os
;
3905 else if (suggested_lma
== 0)
3906 suggested_lma
= os
->lma
;
3909 BFD_ASSERT (m
->count
> 0);
3911 /* Add the current segment to the list of built segments. */
3917 /* We still have not allocated all of the sections to
3918 segments. Create a new segment here, initialise it
3919 and carry on looping. */
3921 m
= ((struct elf_segment_map
*)
3923 (sizeof (struct elf_segment_map
)
3924 + ((size_t) csecs
- 1) * sizeof (asection
*))));
3928 /* Initialise the fields of the segment map. Set the physical
3929 physical address to the LMA of the first section that has
3930 not yet been assigned. */
3933 m
->p_type
= p
->p_type
;
3934 m
->p_flags
= p
->p_flags
;
3935 m
->p_flags_valid
= 1;
3936 m
->p_paddr
= suggested_lma
;
3937 m
->p_paddr_valid
= 1;
3938 m
->includes_filehdr
= 0;
3939 m
->includes_phdrs
= 0;
3942 while (isec
< csecs
);
3947 /* The Solaris linker creates program headers in which all the
3948 p_paddr fields are zero. When we try to objcopy or strip such a
3949 file, we get confused. Check for this case, and if we find it
3950 reset the p_paddr_valid fields. */
3951 for (m
= mfirst
; m
!= NULL
; m
= m
->next
)
3952 if (m
->p_paddr
!= 0)
3956 for (m
= mfirst
; m
!= NULL
; m
= m
->next
)
3957 m
->p_paddr_valid
= 0;
3960 elf_tdata (obfd
)->segment_map
= mfirst
;
3963 /* Final Step: Sort the segments into ascending order of physical address. */
3966 struct elf_segment_map
* prev
;
3969 for (m
= mfirst
->next
; m
!= NULL
; prev
= m
, m
= m
->next
)
3971 /* Yes I know - its a bubble sort....*/
3972 if (m
->next
!= NULL
&& (m
->next
->p_paddr
< m
->p_paddr
))
3974 /* swap m and m->next */
3975 prev
->next
= m
->next
;
3976 m
->next
= m
->next
->next
;
3977 prev
->next
->next
= m
;
3986 #undef IS_CONTAINED_BY
3987 #undef IS_SOLARIS_PT_INTERP
3988 #undef IS_COREFILE_NOTE
3992 /* Copy private section information. This copies over the entsize
3993 field, and sometimes the info field. */
3996 _bfd_elf_copy_private_section_data (ibfd
, isec
, obfd
, osec
)
4002 Elf_Internal_Shdr
*ihdr
, *ohdr
;
4004 if (ibfd
->xvec
->flavour
!= bfd_target_elf_flavour
4005 || obfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
4008 /* Copy over private BFD data if it has not already been copied.
4009 This must be done here, rather than in the copy_private_bfd_data
4010 entry point, because the latter is called after the section
4011 contents have been set, which means that the program headers have
4012 already been worked out. */
4013 if (elf_tdata (obfd
)->segment_map
== NULL
4014 && elf_tdata (ibfd
)->phdr
!= NULL
)
4018 /* Only set up the segments if there are no more SEC_ALLOC
4019 sections. FIXME: This won't do the right thing if objcopy is
4020 used to remove the last SEC_ALLOC section, since objcopy
4021 won't call this routine in that case. */
4022 for (s
= isec
->next
; s
!= NULL
; s
= s
->next
)
4023 if ((s
->flags
& SEC_ALLOC
) != 0)
4027 if (! copy_private_bfd_data (ibfd
, obfd
))
4032 ihdr
= &elf_section_data (isec
)->this_hdr
;
4033 ohdr
= &elf_section_data (osec
)->this_hdr
;
4035 ohdr
->sh_entsize
= ihdr
->sh_entsize
;
4037 if (ihdr
->sh_type
== SHT_SYMTAB
4038 || ihdr
->sh_type
== SHT_DYNSYM
4039 || ihdr
->sh_type
== SHT_GNU_verneed
4040 || ihdr
->sh_type
== SHT_GNU_verdef
)
4041 ohdr
->sh_info
= ihdr
->sh_info
;
4043 elf_section_data (osec
)->use_rela_p
4044 = elf_section_data (isec
)->use_rela_p
;
4049 /* Copy private symbol information. If this symbol is in a section
4050 which we did not map into a BFD section, try to map the section
4051 index correctly. We use special macro definitions for the mapped
4052 section indices; these definitions are interpreted by the
4053 swap_out_syms function. */
4055 #define MAP_ONESYMTAB (SHN_LORESERVE - 1)
4056 #define MAP_DYNSYMTAB (SHN_LORESERVE - 2)
4057 #define MAP_STRTAB (SHN_LORESERVE - 3)
4058 #define MAP_SHSTRTAB (SHN_LORESERVE - 4)
4061 _bfd_elf_copy_private_symbol_data (ibfd
, isymarg
, obfd
, osymarg
)
4067 elf_symbol_type
*isym
, *osym
;
4069 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
4070 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
4073 isym
= elf_symbol_from (ibfd
, isymarg
);
4074 osym
= elf_symbol_from (obfd
, osymarg
);
4078 && bfd_is_abs_section (isym
->symbol
.section
))
4082 shndx
= isym
->internal_elf_sym
.st_shndx
;
4083 if (shndx
== elf_onesymtab (ibfd
))
4084 shndx
= MAP_ONESYMTAB
;
4085 else if (shndx
== elf_dynsymtab (ibfd
))
4086 shndx
= MAP_DYNSYMTAB
;
4087 else if (shndx
== elf_tdata (ibfd
)->strtab_section
)
4089 else if (shndx
== elf_tdata (ibfd
)->shstrtab_section
)
4090 shndx
= MAP_SHSTRTAB
;
4091 osym
->internal_elf_sym
.st_shndx
= shndx
;
4097 /* Swap out the symbols. */
4100 swap_out_syms (abfd
, sttp
, relocatable_p
)
4102 struct bfd_strtab_hash
**sttp
;
4105 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
4107 if (!elf_map_symbols (abfd
))
4110 /* Dump out the symtabs. */
4112 int symcount
= bfd_get_symcount (abfd
);
4113 asymbol
**syms
= bfd_get_outsymbols (abfd
);
4114 struct bfd_strtab_hash
*stt
;
4115 Elf_Internal_Shdr
*symtab_hdr
;
4116 Elf_Internal_Shdr
*symstrtab_hdr
;
4117 char *outbound_syms
;
4120 stt
= _bfd_elf_stringtab_init ();
4124 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4125 symtab_hdr
->sh_type
= SHT_SYMTAB
;
4126 symtab_hdr
->sh_entsize
= bed
->s
->sizeof_sym
;
4127 symtab_hdr
->sh_size
= symtab_hdr
->sh_entsize
* (symcount
+ 1);
4128 symtab_hdr
->sh_info
= elf_num_locals (abfd
) + 1;
4129 symtab_hdr
->sh_addralign
= bed
->s
->file_align
;
4131 symstrtab_hdr
= &elf_tdata (abfd
)->strtab_hdr
;
4132 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
4134 outbound_syms
= bfd_alloc (abfd
,
4135 (1 + symcount
) * bed
->s
->sizeof_sym
);
4136 if (outbound_syms
== NULL
)
4138 symtab_hdr
->contents
= (PTR
) outbound_syms
;
4140 /* now generate the data (for "contents") */
4142 /* Fill in zeroth symbol and swap it out. */
4143 Elf_Internal_Sym sym
;
4149 sym
.st_shndx
= SHN_UNDEF
;
4150 bed
->s
->swap_symbol_out (abfd
, &sym
, (PTR
) outbound_syms
);
4151 outbound_syms
+= bed
->s
->sizeof_sym
;
4153 for (idx
= 0; idx
< symcount
; idx
++)
4155 Elf_Internal_Sym sym
;
4156 bfd_vma value
= syms
[idx
]->value
;
4157 elf_symbol_type
*type_ptr
;
4158 flagword flags
= syms
[idx
]->flags
;
4161 if (flags
& BSF_SECTION_SYM
)
4162 /* Section symbols have no names. */
4166 sym
.st_name
= (unsigned long) _bfd_stringtab_add (stt
,
4169 if (sym
.st_name
== (unsigned long) -1)
4173 type_ptr
= elf_symbol_from (abfd
, syms
[idx
]);
4175 if ((flags
& BSF_SECTION_SYM
) == 0
4176 && bfd_is_com_section (syms
[idx
]->section
))
4178 /* ELF common symbols put the alignment into the `value' field,
4179 and the size into the `size' field. This is backwards from
4180 how BFD handles it, so reverse it here. */
4181 sym
.st_size
= value
;
4182 if (type_ptr
== NULL
4183 || type_ptr
->internal_elf_sym
.st_value
== 0)
4184 sym
.st_value
= value
>= 16 ? 16 : (1 << bfd_log2 (value
));
4186 sym
.st_value
= type_ptr
->internal_elf_sym
.st_value
;
4187 sym
.st_shndx
= _bfd_elf_section_from_bfd_section
4188 (abfd
, syms
[idx
]->section
);
4192 asection
*sec
= syms
[idx
]->section
;
4195 if (sec
->output_section
)
4197 value
+= sec
->output_offset
;
4198 sec
= sec
->output_section
;
4200 /* Don't add in the section vma for relocatable output. */
4201 if (! relocatable_p
)
4203 sym
.st_value
= value
;
4204 sym
.st_size
= type_ptr
? type_ptr
->internal_elf_sym
.st_size
: 0;
4206 if (bfd_is_abs_section (sec
)
4208 && type_ptr
->internal_elf_sym
.st_shndx
!= 0)
4210 /* This symbol is in a real ELF section which we did
4211 not create as a BFD section. Undo the mapping done
4212 by copy_private_symbol_data. */
4213 shndx
= type_ptr
->internal_elf_sym
.st_shndx
;
4217 shndx
= elf_onesymtab (abfd
);
4220 shndx
= elf_dynsymtab (abfd
);
4223 shndx
= elf_tdata (abfd
)->strtab_section
;
4226 shndx
= elf_tdata (abfd
)->shstrtab_section
;
4234 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
4240 /* Writing this would be a hell of a lot easier if
4241 we had some decent documentation on bfd, and
4242 knew what to expect of the library, and what to
4243 demand of applications. For example, it
4244 appears that `objcopy' might not set the
4245 section of a symbol to be a section that is
4246 actually in the output file. */
4247 sec2
= bfd_get_section_by_name (abfd
, sec
->name
);
4248 BFD_ASSERT (sec2
!= 0);
4249 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec2
);
4250 BFD_ASSERT (shndx
!= -1);
4254 sym
.st_shndx
= shndx
;
4257 if ((flags
& BSF_FUNCTION
) != 0)
4259 else if ((flags
& BSF_OBJECT
) != 0)
4264 /* Processor-specific types */
4265 if (type_ptr
!= NULL
4266 && bed
->elf_backend_get_symbol_type
)
4267 type
= (*bed
->elf_backend_get_symbol_type
) (&type_ptr
->internal_elf_sym
, type
);
4269 if (flags
& BSF_SECTION_SYM
)
4270 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_SECTION
);
4271 else if (bfd_is_com_section (syms
[idx
]->section
))
4272 sym
.st_info
= ELF_ST_INFO (STB_GLOBAL
, type
);
4273 else if (bfd_is_und_section (syms
[idx
]->section
))
4274 sym
.st_info
= ELF_ST_INFO (((flags
& BSF_WEAK
)
4278 else if (flags
& BSF_FILE
)
4279 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_FILE
);
4282 int bind
= STB_LOCAL
;
4284 if (flags
& BSF_LOCAL
)
4286 else if (flags
& BSF_WEAK
)
4288 else if (flags
& BSF_GLOBAL
)
4291 sym
.st_info
= ELF_ST_INFO (bind
, type
);
4294 if (type_ptr
!= NULL
)
4295 sym
.st_other
= type_ptr
->internal_elf_sym
.st_other
;
4299 bed
->s
->swap_symbol_out (abfd
, &sym
, (PTR
) outbound_syms
);
4300 outbound_syms
+= bed
->s
->sizeof_sym
;
4304 symstrtab_hdr
->sh_size
= _bfd_stringtab_size (stt
);
4305 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
4307 symstrtab_hdr
->sh_flags
= 0;
4308 symstrtab_hdr
->sh_addr
= 0;
4309 symstrtab_hdr
->sh_entsize
= 0;
4310 symstrtab_hdr
->sh_link
= 0;
4311 symstrtab_hdr
->sh_info
= 0;
4312 symstrtab_hdr
->sh_addralign
= 1;
4318 /* Return the number of bytes required to hold the symtab vector.
4320 Note that we base it on the count plus 1, since we will null terminate
4321 the vector allocated based on this size. However, the ELF symbol table
4322 always has a dummy entry as symbol #0, so it ends up even. */
4325 _bfd_elf_get_symtab_upper_bound (abfd
)
4330 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4332 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
4333 symtab_size
= (symcount
- 1 + 1) * (sizeof (asymbol
*));
4339 _bfd_elf_get_dynamic_symtab_upper_bound (abfd
)
4344 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->dynsymtab_hdr
;
4346 if (elf_dynsymtab (abfd
) == 0)
4348 bfd_set_error (bfd_error_invalid_operation
);
4352 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
4353 symtab_size
= (symcount
- 1 + 1) * (sizeof (asymbol
*));
4359 _bfd_elf_get_reloc_upper_bound (abfd
, asect
)
4360 bfd
*abfd ATTRIBUTE_UNUSED
;
4363 return (asect
->reloc_count
+ 1) * sizeof (arelent
*);
4366 /* Canonicalize the relocs. */
4369 _bfd_elf_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
4378 if (! get_elf_backend_data (abfd
)->s
->slurp_reloc_table (abfd
,
4384 tblptr
= section
->relocation
;
4385 for (i
= 0; i
< section
->reloc_count
; i
++)
4386 *relptr
++ = tblptr
++;
4390 return section
->reloc_count
;
4394 _bfd_elf_get_symtab (abfd
, alocation
)
4396 asymbol
**alocation
;
4398 long symcount
= get_elf_backend_data (abfd
)->s
->slurp_symbol_table
4399 (abfd
, alocation
, false);
4402 bfd_get_symcount (abfd
) = symcount
;
4407 _bfd_elf_canonicalize_dynamic_symtab (abfd
, alocation
)
4409 asymbol
**alocation
;
4411 return get_elf_backend_data (abfd
)->s
->slurp_symbol_table
4412 (abfd
, alocation
, true);
4415 /* Return the size required for the dynamic reloc entries. Any
4416 section that was actually installed in the BFD, and has type
4417 SHT_REL or SHT_RELA, and uses the dynamic symbol table, is
4418 considered to be a dynamic reloc section. */
4421 _bfd_elf_get_dynamic_reloc_upper_bound (abfd
)
4427 if (elf_dynsymtab (abfd
) == 0)
4429 bfd_set_error (bfd_error_invalid_operation
);
4433 ret
= sizeof (arelent
*);
4434 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
4435 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
4436 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_REL
4437 || elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
4438 ret
+= ((s
->_raw_size
/ elf_section_data (s
)->this_hdr
.sh_entsize
)
4439 * sizeof (arelent
*));
4444 /* Canonicalize the dynamic relocation entries. Note that we return
4445 the dynamic relocations as a single block, although they are
4446 actually associated with particular sections; the interface, which
4447 was designed for SunOS style shared libraries, expects that there
4448 is only one set of dynamic relocs. Any section that was actually
4449 installed in the BFD, and has type SHT_REL or SHT_RELA, and uses
4450 the dynamic symbol table, is considered to be a dynamic reloc
4454 _bfd_elf_canonicalize_dynamic_reloc (abfd
, storage
, syms
)
4459 boolean (*slurp_relocs
) PARAMS ((bfd
*, asection
*, asymbol
**, boolean
));
4463 if (elf_dynsymtab (abfd
) == 0)
4465 bfd_set_error (bfd_error_invalid_operation
);
4469 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
4471 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
4473 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
4474 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_REL
4475 || elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
4480 if (! (*slurp_relocs
) (abfd
, s
, syms
, true))
4482 count
= s
->_raw_size
/ elf_section_data (s
)->this_hdr
.sh_entsize
;
4484 for (i
= 0; i
< count
; i
++)
4495 /* Read in the version information. */
4498 _bfd_elf_slurp_version_tables (abfd
)
4501 bfd_byte
*contents
= NULL
;
4503 if (elf_dynverdef (abfd
) != 0)
4505 Elf_Internal_Shdr
*hdr
;
4506 Elf_External_Verdef
*everdef
;
4507 Elf_Internal_Verdef
*iverdef
;
4510 hdr
= &elf_tdata (abfd
)->dynverdef_hdr
;
4512 elf_tdata (abfd
)->verdef
=
4513 ((Elf_Internal_Verdef
*)
4514 bfd_zalloc (abfd
, hdr
->sh_info
* sizeof (Elf_Internal_Verdef
)));
4515 if (elf_tdata (abfd
)->verdef
== NULL
)
4518 elf_tdata (abfd
)->cverdefs
= hdr
->sh_info
;
4520 contents
= (bfd_byte
*) bfd_malloc (hdr
->sh_size
);
4521 if (contents
== NULL
)
4523 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
4524 || bfd_read ((PTR
) contents
, 1, hdr
->sh_size
, abfd
) != hdr
->sh_size
)
4527 everdef
= (Elf_External_Verdef
*) contents
;
4528 iverdef
= elf_tdata (abfd
)->verdef
;
4529 for (i
= 0; i
< hdr
->sh_info
; i
++, iverdef
++)
4531 Elf_External_Verdaux
*everdaux
;
4532 Elf_Internal_Verdaux
*iverdaux
;
4535 _bfd_elf_swap_verdef_in (abfd
, everdef
, iverdef
);
4537 iverdef
->vd_bfd
= abfd
;
4539 iverdef
->vd_auxptr
= ((Elf_Internal_Verdaux
*)
4542 * sizeof (Elf_Internal_Verdaux
))));
4543 if (iverdef
->vd_auxptr
== NULL
)
4546 everdaux
= ((Elf_External_Verdaux
*)
4547 ((bfd_byte
*) everdef
+ iverdef
->vd_aux
));
4548 iverdaux
= iverdef
->vd_auxptr
;
4549 for (j
= 0; j
< iverdef
->vd_cnt
; j
++, iverdaux
++)
4551 _bfd_elf_swap_verdaux_in (abfd
, everdaux
, iverdaux
);
4553 iverdaux
->vda_nodename
=
4554 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
4555 iverdaux
->vda_name
);
4556 if (iverdaux
->vda_nodename
== NULL
)
4559 if (j
+ 1 < iverdef
->vd_cnt
)
4560 iverdaux
->vda_nextptr
= iverdaux
+ 1;
4562 iverdaux
->vda_nextptr
= NULL
;
4564 everdaux
= ((Elf_External_Verdaux
*)
4565 ((bfd_byte
*) everdaux
+ iverdaux
->vda_next
));
4568 iverdef
->vd_nodename
= iverdef
->vd_auxptr
->vda_nodename
;
4570 if (i
+ 1 < hdr
->sh_info
)
4571 iverdef
->vd_nextdef
= iverdef
+ 1;
4573 iverdef
->vd_nextdef
= NULL
;
4575 everdef
= ((Elf_External_Verdef
*)
4576 ((bfd_byte
*) everdef
+ iverdef
->vd_next
));
4583 if (elf_dynverref (abfd
) != 0)
4585 Elf_Internal_Shdr
*hdr
;
4586 Elf_External_Verneed
*everneed
;
4587 Elf_Internal_Verneed
*iverneed
;
4590 hdr
= &elf_tdata (abfd
)->dynverref_hdr
;
4592 elf_tdata (abfd
)->verref
=
4593 ((Elf_Internal_Verneed
*)
4594 bfd_zalloc (abfd
, hdr
->sh_info
* sizeof (Elf_Internal_Verneed
)));
4595 if (elf_tdata (abfd
)->verref
== NULL
)
4598 elf_tdata (abfd
)->cverrefs
= hdr
->sh_info
;
4600 contents
= (bfd_byte
*) bfd_malloc (hdr
->sh_size
);
4601 if (contents
== NULL
)
4603 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
4604 || bfd_read ((PTR
) contents
, 1, hdr
->sh_size
, abfd
) != hdr
->sh_size
)
4607 everneed
= (Elf_External_Verneed
*) contents
;
4608 iverneed
= elf_tdata (abfd
)->verref
;
4609 for (i
= 0; i
< hdr
->sh_info
; i
++, iverneed
++)
4611 Elf_External_Vernaux
*evernaux
;
4612 Elf_Internal_Vernaux
*ivernaux
;
4615 _bfd_elf_swap_verneed_in (abfd
, everneed
, iverneed
);
4617 iverneed
->vn_bfd
= abfd
;
4619 iverneed
->vn_filename
=
4620 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
4622 if (iverneed
->vn_filename
== NULL
)
4625 iverneed
->vn_auxptr
=
4626 ((Elf_Internal_Vernaux
*)
4628 iverneed
->vn_cnt
* sizeof (Elf_Internal_Vernaux
)));
4630 evernaux
= ((Elf_External_Vernaux
*)
4631 ((bfd_byte
*) everneed
+ iverneed
->vn_aux
));
4632 ivernaux
= iverneed
->vn_auxptr
;
4633 for (j
= 0; j
< iverneed
->vn_cnt
; j
++, ivernaux
++)
4635 _bfd_elf_swap_vernaux_in (abfd
, evernaux
, ivernaux
);
4637 ivernaux
->vna_nodename
=
4638 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
4639 ivernaux
->vna_name
);
4640 if (ivernaux
->vna_nodename
== NULL
)
4643 if (j
+ 1 < iverneed
->vn_cnt
)
4644 ivernaux
->vna_nextptr
= ivernaux
+ 1;
4646 ivernaux
->vna_nextptr
= NULL
;
4648 evernaux
= ((Elf_External_Vernaux
*)
4649 ((bfd_byte
*) evernaux
+ ivernaux
->vna_next
));
4652 if (i
+ 1 < hdr
->sh_info
)
4653 iverneed
->vn_nextref
= iverneed
+ 1;
4655 iverneed
->vn_nextref
= NULL
;
4657 everneed
= ((Elf_External_Verneed
*)
4658 ((bfd_byte
*) everneed
+ iverneed
->vn_next
));
4668 if (contents
== NULL
)
4674 _bfd_elf_make_empty_symbol (abfd
)
4677 elf_symbol_type
*newsym
;
4679 newsym
= (elf_symbol_type
*) bfd_zalloc (abfd
, sizeof (elf_symbol_type
));
4684 newsym
->symbol
.the_bfd
= abfd
;
4685 return &newsym
->symbol
;
4690 _bfd_elf_get_symbol_info (ignore_abfd
, symbol
, ret
)
4691 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
4695 bfd_symbol_info (symbol
, ret
);
4698 /* Return whether a symbol name implies a local symbol. Most targets
4699 use this function for the is_local_label_name entry point, but some
4703 _bfd_elf_is_local_label_name (abfd
, name
)
4704 bfd
*abfd ATTRIBUTE_UNUSED
;
4707 /* Normal local symbols start with ``.L''. */
4708 if (name
[0] == '.' && name
[1] == 'L')
4711 /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate
4712 DWARF debugging symbols starting with ``..''. */
4713 if (name
[0] == '.' && name
[1] == '.')
4716 /* gcc will sometimes generate symbols beginning with ``_.L_'' when
4717 emitting DWARF debugging output. I suspect this is actually a
4718 small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call
4719 ASM_GENERATE_INTERNAL_LABEL, and this causes the leading
4720 underscore to be emitted on some ELF targets). For ease of use,
4721 we treat such symbols as local. */
4722 if (name
[0] == '_' && name
[1] == '.' && name
[2] == 'L' && name
[3] == '_')
4729 _bfd_elf_get_lineno (ignore_abfd
, symbol
)
4730 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
4731 asymbol
*symbol ATTRIBUTE_UNUSED
;
4738 _bfd_elf_set_arch_mach (abfd
, arch
, machine
)
4740 enum bfd_architecture arch
;
4741 unsigned long machine
;
4743 /* If this isn't the right architecture for this backend, and this
4744 isn't the generic backend, fail. */
4745 if (arch
!= get_elf_backend_data (abfd
)->arch
4746 && arch
!= bfd_arch_unknown
4747 && get_elf_backend_data (abfd
)->arch
!= bfd_arch_unknown
)
4750 return bfd_default_set_arch_mach (abfd
, arch
, machine
);
4753 /* Find the nearest line to a particular section and offset, for error
4757 _bfd_elf_find_nearest_line (abfd
,
4768 CONST
char **filename_ptr
;
4769 CONST
char **functionname_ptr
;
4770 unsigned int *line_ptr
;
4773 const char *filename
;
4778 if (_bfd_dwarf1_find_nearest_line (abfd
, section
, symbols
, offset
,
4779 filename_ptr
, functionname_ptr
,
4783 if (_bfd_dwarf2_find_nearest_line (abfd
, section
, symbols
, offset
,
4784 filename_ptr
, functionname_ptr
,
4788 if (! _bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
4789 &found
, filename_ptr
,
4790 functionname_ptr
, line_ptr
,
4791 &elf_tdata (abfd
)->line_info
))
4796 if (symbols
== NULL
)
4803 for (p
= symbols
; *p
!= NULL
; p
++)
4807 q
= (elf_symbol_type
*) *p
;
4809 if (bfd_get_section (&q
->symbol
) != section
)
4812 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
4817 filename
= bfd_asymbol_name (&q
->symbol
);
4821 if (q
->symbol
.section
== section
4822 && q
->symbol
.value
>= low_func
4823 && q
->symbol
.value
<= offset
)
4825 func
= (asymbol
*) q
;
4826 low_func
= q
->symbol
.value
;
4835 *filename_ptr
= filename
;
4836 *functionname_ptr
= bfd_asymbol_name (func
);
4842 _bfd_elf_sizeof_headers (abfd
, reloc
)
4848 ret
= get_elf_backend_data (abfd
)->s
->sizeof_ehdr
;
4850 ret
+= get_program_header_size (abfd
);
4855 _bfd_elf_set_section_contents (abfd
, section
, location
, offset
, count
)
4860 bfd_size_type count
;
4862 Elf_Internal_Shdr
*hdr
;
4864 if (! abfd
->output_has_begun
4865 && ! _bfd_elf_compute_section_file_positions
4866 (abfd
, (struct bfd_link_info
*) NULL
))
4869 hdr
= &elf_section_data (section
)->this_hdr
;
4871 if (bfd_seek (abfd
, hdr
->sh_offset
+ offset
, SEEK_SET
) == -1)
4873 if (bfd_write (location
, 1, count
, abfd
) != count
)
4880 _bfd_elf_no_info_to_howto (abfd
, cache_ptr
, dst
)
4881 bfd
*abfd ATTRIBUTE_UNUSED
;
4882 arelent
*cache_ptr ATTRIBUTE_UNUSED
;
4883 Elf_Internal_Rela
*dst ATTRIBUTE_UNUSED
;
4890 _bfd_elf_no_info_to_howto_rel (abfd
, cache_ptr
, dst
)
4893 Elf_Internal_Rel
*dst
;
4899 /* Try to convert a non-ELF reloc into an ELF one. */
4902 _bfd_elf_validate_reloc (abfd
, areloc
)
4906 /* Check whether we really have an ELF howto. */
4908 if ((*areloc
->sym_ptr_ptr
)->the_bfd
->xvec
!= abfd
->xvec
)
4910 bfd_reloc_code_real_type code
;
4911 reloc_howto_type
*howto
;
4913 /* Alien reloc: Try to determine its type to replace it with an
4914 equivalent ELF reloc. */
4916 if (areloc
->howto
->pc_relative
)
4918 switch (areloc
->howto
->bitsize
)
4921 code
= BFD_RELOC_8_PCREL
;
4924 code
= BFD_RELOC_12_PCREL
;
4927 code
= BFD_RELOC_16_PCREL
;
4930 code
= BFD_RELOC_24_PCREL
;
4933 code
= BFD_RELOC_32_PCREL
;
4936 code
= BFD_RELOC_64_PCREL
;
4942 howto
= bfd_reloc_type_lookup (abfd
, code
);
4944 if (areloc
->howto
->pcrel_offset
!= howto
->pcrel_offset
)
4946 if (howto
->pcrel_offset
)
4947 areloc
->addend
+= areloc
->address
;
4949 areloc
->addend
-= areloc
->address
; /* addend is unsigned!! */
4954 switch (areloc
->howto
->bitsize
)
4960 code
= BFD_RELOC_14
;
4963 code
= BFD_RELOC_16
;
4966 code
= BFD_RELOC_26
;
4969 code
= BFD_RELOC_32
;
4972 code
= BFD_RELOC_64
;
4978 howto
= bfd_reloc_type_lookup (abfd
, code
);
4982 areloc
->howto
= howto
;
4990 (*_bfd_error_handler
)
4991 (_("%s: unsupported relocation type %s"),
4992 bfd_get_filename (abfd
), areloc
->howto
->name
);
4993 bfd_set_error (bfd_error_bad_value
);
4998 _bfd_elf_close_and_cleanup (abfd
)
5001 if (bfd_get_format (abfd
) == bfd_object
)
5003 if (elf_shstrtab (abfd
) != NULL
)
5004 _bfd_stringtab_free (elf_shstrtab (abfd
));
5007 return _bfd_generic_close_and_cleanup (abfd
);
5010 /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY
5011 in the relocation's offset. Thus we cannot allow any sort of sanity
5012 range-checking to interfere. There is nothing else to do in processing
5015 bfd_reloc_status_type
5016 _bfd_elf_rel_vtable_reloc_fn (abfd
, re
, symbol
, data
, is
, obfd
, errmsg
)
5017 bfd
*abfd ATTRIBUTE_UNUSED
;
5018 arelent
*re ATTRIBUTE_UNUSED
;
5019 struct symbol_cache_entry
*symbol ATTRIBUTE_UNUSED
;
5020 PTR data ATTRIBUTE_UNUSED
;
5021 asection
*is ATTRIBUTE_UNUSED
;
5022 bfd
*obfd ATTRIBUTE_UNUSED
;
5023 char **errmsg ATTRIBUTE_UNUSED
;
5025 return bfd_reloc_ok
;
5029 /* Elf core file support. Much of this only works on native
5030 toolchains, since we rely on knowing the
5031 machine-dependent procfs structure in order to pick
5032 out details about the corefile. */
5034 #ifdef HAVE_SYS_PROCFS_H
5035 # include <sys/procfs.h>
5039 /* Define offsetof for those systems which lack it. */
5042 # define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
5046 /* FIXME: this is kinda wrong, but it's what gdb wants. */
5049 elfcore_make_pid (abfd
)
5052 return ((elf_tdata (abfd
)->core_lwpid
<< 16)
5053 + (elf_tdata (abfd
)->core_pid
));
5057 /* If there isn't a section called NAME, make one, using
5058 data from SECT. Note, this function will generate a
5059 reference to NAME, so you shouldn't deallocate or
5063 elfcore_maybe_make_sect (abfd
, name
, sect
)
5070 if (bfd_get_section_by_name (abfd
, name
) != NULL
)
5073 sect2
= bfd_make_section (abfd
, name
);
5077 sect2
->_raw_size
= sect
->_raw_size
;
5078 sect2
->filepos
= sect
->filepos
;
5079 sect2
->flags
= sect
->flags
;
5080 sect2
->alignment_power
= sect
->alignment_power
;
5085 /* prstatus_t exists on:
5087 linux 2.[01] + glibc
5091 #if defined (HAVE_PRSTATUS_T)
5093 elfcore_grok_prstatus (abfd
, note
)
5095 Elf_Internal_Note
* note
;
5102 if (note
->descsz
!= sizeof (prstat
))
5105 memcpy (&prstat
, note
->descdata
, sizeof (prstat
));
5107 elf_tdata (abfd
)->core_signal
= prstat
.pr_cursig
;
5108 elf_tdata (abfd
)->core_pid
= prstat
.pr_pid
;
5110 /* pr_who exists on:
5113 pr_who doesn't exist on:
5116 #if defined (HAVE_PRSTATUS_T_PR_WHO)
5117 elf_tdata (abfd
)->core_lwpid
= prstat
.pr_who
;
5120 /* Make a ".reg/999" section. */
5122 sprintf (buf
, ".reg/%d", elfcore_make_pid (abfd
));
5123 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5128 sect
= bfd_make_section (abfd
, name
);
5131 sect
->_raw_size
= sizeof (prstat
.pr_reg
);
5132 sect
->filepos
= note
->descpos
+ offsetof (prstatus_t
, pr_reg
);
5133 sect
->flags
= SEC_HAS_CONTENTS
;
5134 sect
->alignment_power
= 2;
5136 if (! elfcore_maybe_make_sect (abfd
, ".reg", sect
))
5141 #endif /* defined (HAVE_PRSTATUS_T) */
5144 /* Create a pseudosection containing the exact contents of NOTE. This
5145 actually creates up to two pseudosections:
5146 - For the single-threaded case, a section named NAME, unless
5147 such a section already exists.
5148 - For the multi-threaded case, a section named "NAME/PID", where
5149 PID is elfcore_make_pid (abfd).
5150 Both pseudosections have identical contents: the contents of NOTE. */
5153 elfcore_make_note_pseudosection (abfd
, name
, note
)
5156 Elf_Internal_Note
* note
;
5159 char *threaded_name
;
5162 /* Build the section name. */
5164 sprintf (buf
, "%s/%d", name
, elfcore_make_pid (abfd
));
5165 threaded_name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5166 if (threaded_name
== NULL
)
5168 strcpy (threaded_name
, buf
);
5170 sect
= bfd_make_section (abfd
, threaded_name
);
5173 sect
->_raw_size
= note
->descsz
;
5174 sect
->filepos
= note
->descpos
;
5175 sect
->flags
= SEC_HAS_CONTENTS
;
5176 sect
->alignment_power
= 2;
5178 if (! elfcore_maybe_make_sect (abfd
, name
, sect
))
5185 /* There isn't a consistent prfpregset_t across platforms,
5186 but it doesn't matter, because we don't have to pick this
5187 data structure apart. */
5189 elfcore_grok_prfpreg (abfd
, note
)
5191 Elf_Internal_Note
* note
;
5193 return elfcore_make_note_pseudosection (abfd
, ".reg2", note
);
5197 /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note
5198 type of 5 (NT_PRXFPREG). Just include the whole note's contents
5201 elfcore_grok_prxfpreg (abfd
, note
)
5203 Elf_Internal_Note
* note
;
5205 return elfcore_make_note_pseudosection (abfd
, ".reg-xfp", note
);
5209 #if defined (HAVE_PRPSINFO_T)
5210 # define elfcore_psinfo_t prpsinfo_t
5213 #if defined (HAVE_PSINFO_T)
5214 # define elfcore_psinfo_t psinfo_t
5218 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
5220 /* return a malloc'ed copy of a string at START which is at
5221 most MAX bytes long, possibly without a terminating '\0'.
5222 the copy will always have a terminating '\0'. */
5225 elfcore_strndup (abfd
, start
, max
)
5231 char* end
= memchr (start
, '\0', max
);
5239 dup
= bfd_alloc (abfd
, len
+ 1);
5243 memcpy (dup
, start
, len
);
5250 elfcore_grok_psinfo (abfd
, note
)
5252 Elf_Internal_Note
* note
;
5254 elfcore_psinfo_t psinfo
;
5256 if (note
->descsz
!= sizeof (elfcore_psinfo_t
))
5259 memcpy (&psinfo
, note
->descdata
, note
->descsz
);
5261 elf_tdata (abfd
)->core_program
5262 = elfcore_strndup (abfd
, psinfo
.pr_fname
, sizeof (psinfo
.pr_fname
));
5264 elf_tdata (abfd
)->core_command
5265 = elfcore_strndup (abfd
, psinfo
.pr_psargs
, sizeof (psinfo
.pr_psargs
));
5267 /* Note that for some reason, a spurious space is tacked
5268 onto the end of the args in some (at least one anyway)
5269 implementations, so strip it off if it exists. */
5272 char* command
= elf_tdata (abfd
)->core_command
;
5273 int n
= strlen (command
);
5275 if (0 < n
&& command
[n
- 1] == ' ')
5276 command
[n
- 1] = '\0';
5281 #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */
5284 #if defined (HAVE_PSTATUS_T)
5286 elfcore_grok_pstatus (abfd
, note
)
5288 Elf_Internal_Note
* note
;
5292 if (note
->descsz
!= sizeof (pstat
))
5295 memcpy (&pstat
, note
->descdata
, sizeof (pstat
));
5297 elf_tdata (abfd
)->core_pid
= pstat
.pr_pid
;
5299 /* Could grab some more details from the "representative"
5300 lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an
5301 NT_LWPSTATUS note, presumably. */
5305 #endif /* defined (HAVE_PSTATUS_T) */
5308 #if defined (HAVE_LWPSTATUS_T)
5310 elfcore_grok_lwpstatus (abfd
, note
)
5312 Elf_Internal_Note
* note
;
5314 lwpstatus_t lwpstat
;
5319 if (note
->descsz
!= sizeof (lwpstat
))
5322 memcpy (&lwpstat
, note
->descdata
, sizeof (lwpstat
));
5324 elf_tdata (abfd
)->core_lwpid
= lwpstat
.pr_lwpid
;
5325 elf_tdata (abfd
)->core_signal
= lwpstat
.pr_cursig
;
5327 /* Make a ".reg/999" section. */
5329 sprintf (buf
, ".reg/%d", elfcore_make_pid (abfd
));
5330 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5335 sect
= bfd_make_section (abfd
, name
);
5339 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
5340 sect
->_raw_size
= sizeof (lwpstat
.pr_context
.uc_mcontext
.gregs
);
5341 sect
->filepos
= note
->descpos
5342 + offsetof (lwpstatus_t
, pr_context
.uc_mcontext
.gregs
);
5345 #if defined (HAVE_LWPSTATUS_T_PR_REG)
5346 sect
->_raw_size
= sizeof (lwpstat
.pr_reg
);
5347 sect
->filepos
= note
->descpos
+ offsetof (lwpstatus_t
, pr_reg
);
5350 sect
->flags
= SEC_HAS_CONTENTS
;
5351 sect
->alignment_power
= 2;
5353 if (!elfcore_maybe_make_sect (abfd
, ".reg", sect
))
5356 /* Make a ".reg2/999" section */
5358 sprintf (buf
, ".reg2/%d", elfcore_make_pid (abfd
));
5359 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5364 sect
= bfd_make_section (abfd
, name
);
5368 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
5369 sect
->_raw_size
= sizeof (lwpstat
.pr_context
.uc_mcontext
.fpregs
);
5370 sect
->filepos
= note
->descpos
5371 + offsetof (lwpstatus_t
, pr_context
.uc_mcontext
.fpregs
);
5374 #if defined (HAVE_LWPSTATUS_T_PR_FPREG)
5375 sect
->_raw_size
= sizeof (lwpstat
.pr_fpreg
);
5376 sect
->filepos
= note
->descpos
+ offsetof (lwpstatus_t
, pr_fpreg
);
5379 sect
->flags
= SEC_HAS_CONTENTS
;
5380 sect
->alignment_power
= 2;
5382 if (!elfcore_maybe_make_sect (abfd
, ".reg2", sect
))
5387 #endif /* defined (HAVE_LWPSTATUS_T) */
5389 #if defined (HAVE_WIN32_PSTATUS_T)
5391 elfcore_grok_win32pstatus (abfd
, note
)
5393 Elf_Internal_Note
* note
;
5398 win32_pstatus_t pstatus
;
5400 if (note
->descsz
< sizeof (pstatus
))
5403 memcpy (& pstatus
, note
->descdata
, note
->descsz
);
5405 switch (pstatus
.data_type
)
5407 case NOTE_INFO_PROCESS
:
5408 /* FIXME: need to add ->core_command. */
5409 elf_tdata (abfd
)->core_signal
= pstatus
.data
.process_info
.signal
;
5410 elf_tdata (abfd
)->core_pid
= pstatus
.data
.process_info
.pid
;
5413 case NOTE_INFO_THREAD
:
5414 /* Make a ".reg/999" section. */
5415 sprintf (buf
, ".reg/%d", pstatus
.data
.thread_info
.tid
);
5417 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5423 sect
= bfd_make_section (abfd
, name
);
5427 sect
->_raw_size
= sizeof (pstatus
.data
.thread_info
.thread_context
);
5428 sect
->filepos
= note
->descpos
+ offsetof (struct win32_pstatus
,
5429 data
.thread_info
.thread_context
);
5430 sect
->flags
= SEC_HAS_CONTENTS
;
5431 sect
->alignment_power
= 2;
5433 if (pstatus
.data
.thread_info
.is_active_thread
)
5434 if (! elfcore_maybe_make_sect (abfd
, ".reg", sect
))
5438 case NOTE_INFO_MODULE
:
5439 /* Make a ".module/xxxxxxxx" section. */
5440 sprintf (buf
, ".module/%08x" , pstatus
.data
.module_info
.base_address
);
5442 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5448 sect
= bfd_make_section (abfd
, name
);
5453 sect
->_raw_size
= note
->descsz
;
5454 sect
->filepos
= note
->descpos
;
5455 sect
->flags
= SEC_HAS_CONTENTS
;
5456 sect
->alignment_power
= 2;
5465 #endif /* HAVE_WIN32_PSTATUS_T */
5468 elfcore_grok_note (abfd
, note
)
5470 Elf_Internal_Note
* note
;
5477 #if defined (HAVE_PRSTATUS_T)
5479 return elfcore_grok_prstatus (abfd
, note
);
5482 #if defined (HAVE_PSTATUS_T)
5484 return elfcore_grok_pstatus (abfd
, note
);
5487 #if defined (HAVE_LWPSTATUS_T)
5489 return elfcore_grok_lwpstatus (abfd
, note
);
5492 case NT_FPREGSET
: /* FIXME: rename to NT_PRFPREG */
5493 return elfcore_grok_prfpreg (abfd
, note
);
5495 #if defined (HAVE_WIN32_PSTATUS_T)
5496 case NT_WIN32PSTATUS
:
5497 return elfcore_grok_win32pstatus (abfd
, note
);
5500 case NT_PRXFPREG
: /* Linux SSE extension */
5501 if (note
->namesz
== 5
5502 && ! strcmp (note
->namedata
, "LINUX"))
5503 return elfcore_grok_prxfpreg (abfd
, note
);
5507 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
5510 return elfcore_grok_psinfo (abfd
, note
);
5517 elfcore_read_notes (abfd
, offset
, size
)
5528 if (bfd_seek (abfd
, offset
, SEEK_SET
) == -1)
5531 buf
= bfd_malloc ((size_t) size
);
5535 if (bfd_read (buf
, size
, 1, abfd
) != size
)
5543 while (p
< buf
+ size
)
5545 /* FIXME: bad alignment assumption. */
5546 Elf_External_Note
* xnp
= (Elf_External_Note
*) p
;
5547 Elf_Internal_Note in
;
5549 in
.type
= bfd_h_get_32 (abfd
, (bfd_byte
*) xnp
->type
);
5551 in
.namesz
= bfd_h_get_32 (abfd
, (bfd_byte
*) xnp
->namesz
);
5552 in
.namedata
= xnp
->name
;
5554 in
.descsz
= bfd_h_get_32 (abfd
, (bfd_byte
*) xnp
->descsz
);
5555 in
.descdata
= in
.namedata
+ BFD_ALIGN (in
.namesz
, 4);
5556 in
.descpos
= offset
+ (in
.descdata
- buf
);
5558 if (! elfcore_grok_note (abfd
, &in
))
5561 p
= in
.descdata
+ BFD_ALIGN (in
.descsz
, 4);
5569 /* FIXME: This function is now unnecessary. Callers can just call
5570 bfd_section_from_phdr directly. */
5573 _bfd_elfcore_section_from_phdr (abfd
, phdr
, sec_num
)
5575 Elf_Internal_Phdr
* phdr
;
5578 if (! bfd_section_from_phdr (abfd
, phdr
, sec_num
))
5586 /* Providing external access to the ELF program header table. */
5588 /* Return an upper bound on the number of bytes required to store a
5589 copy of ABFD's program header table entries. Return -1 if an error
5590 occurs; bfd_get_error will return an appropriate code. */
5592 bfd_get_elf_phdr_upper_bound (abfd
)
5595 if (abfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
5597 bfd_set_error (bfd_error_wrong_format
);
5601 return (elf_elfheader (abfd
)->e_phnum
5602 * sizeof (Elf_Internal_Phdr
));
5606 /* Copy ABFD's program header table entries to *PHDRS. The entries
5607 will be stored as an array of Elf_Internal_Phdr structures, as
5608 defined in include/elf/internal.h. To find out how large the
5609 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
5611 Return the number of program header table entries read, or -1 if an
5612 error occurs; bfd_get_error will return an appropriate code. */
5614 bfd_get_elf_phdrs (abfd
, phdrs
)
5620 if (abfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
5622 bfd_set_error (bfd_error_wrong_format
);
5626 num_phdrs
= elf_elfheader (abfd
)->e_phnum
;
5627 memcpy (phdrs
, elf_tdata (abfd
)->phdr
,
5628 num_phdrs
* sizeof (Elf_Internal_Phdr
));