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
35 #define _SYSCALL32 /* For Sparc64-cross-32 */
45 static INLINE
struct elf_segment_map
*make_mapping
46 PARAMS ((bfd
*, asection
**, unsigned int, unsigned int, boolean
));
47 static boolean map_sections_to_segments
PARAMS ((bfd
*));
48 static int elf_sort_sections
PARAMS ((const PTR
, const PTR
));
49 static boolean assign_file_positions_for_segments
PARAMS ((bfd
*));
50 static boolean assign_file_positions_except_relocs
PARAMS ((bfd
*));
51 static boolean prep_headers
PARAMS ((bfd
*));
52 static boolean swap_out_syms
PARAMS ((bfd
*, struct bfd_strtab_hash
**, int));
53 static boolean copy_private_bfd_data
PARAMS ((bfd
*, bfd
*));
54 static char *elf_read
PARAMS ((bfd
*, long, unsigned int));
55 static void elf_fake_sections
PARAMS ((bfd
*, asection
*, PTR
));
56 static boolean assign_section_numbers
PARAMS ((bfd
*));
57 static INLINE
int sym_is_global
PARAMS ((bfd
*, asymbol
*));
58 static boolean elf_map_symbols
PARAMS ((bfd
*));
59 static bfd_size_type get_program_header_size
PARAMS ((bfd
*));
60 static boolean elfcore_read_notes
PARAMS ((bfd
*, bfd_vma
, bfd_vma
));
62 /* Swap version information in and out. The version information is
63 currently size independent. If that ever changes, this code will
64 need to move into elfcode.h. */
66 /* Swap in a Verdef structure. */
69 _bfd_elf_swap_verdef_in (abfd
, src
, dst
)
71 const Elf_External_Verdef
*src
;
72 Elf_Internal_Verdef
*dst
;
74 dst
->vd_version
= bfd_h_get_16 (abfd
, src
->vd_version
);
75 dst
->vd_flags
= bfd_h_get_16 (abfd
, src
->vd_flags
);
76 dst
->vd_ndx
= bfd_h_get_16 (abfd
, src
->vd_ndx
);
77 dst
->vd_cnt
= bfd_h_get_16 (abfd
, src
->vd_cnt
);
78 dst
->vd_hash
= bfd_h_get_32 (abfd
, src
->vd_hash
);
79 dst
->vd_aux
= bfd_h_get_32 (abfd
, src
->vd_aux
);
80 dst
->vd_next
= bfd_h_get_32 (abfd
, src
->vd_next
);
83 /* Swap out a Verdef structure. */
86 _bfd_elf_swap_verdef_out (abfd
, src
, dst
)
88 const Elf_Internal_Verdef
*src
;
89 Elf_External_Verdef
*dst
;
91 bfd_h_put_16 (abfd
, src
->vd_version
, dst
->vd_version
);
92 bfd_h_put_16 (abfd
, src
->vd_flags
, dst
->vd_flags
);
93 bfd_h_put_16 (abfd
, src
->vd_ndx
, dst
->vd_ndx
);
94 bfd_h_put_16 (abfd
, src
->vd_cnt
, dst
->vd_cnt
);
95 bfd_h_put_32 (abfd
, src
->vd_hash
, dst
->vd_hash
);
96 bfd_h_put_32 (abfd
, src
->vd_aux
, dst
->vd_aux
);
97 bfd_h_put_32 (abfd
, src
->vd_next
, dst
->vd_next
);
100 /* Swap in a Verdaux structure. */
103 _bfd_elf_swap_verdaux_in (abfd
, src
, dst
)
105 const Elf_External_Verdaux
*src
;
106 Elf_Internal_Verdaux
*dst
;
108 dst
->vda_name
= bfd_h_get_32 (abfd
, src
->vda_name
);
109 dst
->vda_next
= bfd_h_get_32 (abfd
, src
->vda_next
);
112 /* Swap out a Verdaux structure. */
115 _bfd_elf_swap_verdaux_out (abfd
, src
, dst
)
117 const Elf_Internal_Verdaux
*src
;
118 Elf_External_Verdaux
*dst
;
120 bfd_h_put_32 (abfd
, src
->vda_name
, dst
->vda_name
);
121 bfd_h_put_32 (abfd
, src
->vda_next
, dst
->vda_next
);
124 /* Swap in a Verneed structure. */
127 _bfd_elf_swap_verneed_in (abfd
, src
, dst
)
129 const Elf_External_Verneed
*src
;
130 Elf_Internal_Verneed
*dst
;
132 dst
->vn_version
= bfd_h_get_16 (abfd
, src
->vn_version
);
133 dst
->vn_cnt
= bfd_h_get_16 (abfd
, src
->vn_cnt
);
134 dst
->vn_file
= bfd_h_get_32 (abfd
, src
->vn_file
);
135 dst
->vn_aux
= bfd_h_get_32 (abfd
, src
->vn_aux
);
136 dst
->vn_next
= bfd_h_get_32 (abfd
, src
->vn_next
);
139 /* Swap out a Verneed structure. */
142 _bfd_elf_swap_verneed_out (abfd
, src
, dst
)
144 const Elf_Internal_Verneed
*src
;
145 Elf_External_Verneed
*dst
;
147 bfd_h_put_16 (abfd
, src
->vn_version
, dst
->vn_version
);
148 bfd_h_put_16 (abfd
, src
->vn_cnt
, dst
->vn_cnt
);
149 bfd_h_put_32 (abfd
, src
->vn_file
, dst
->vn_file
);
150 bfd_h_put_32 (abfd
, src
->vn_aux
, dst
->vn_aux
);
151 bfd_h_put_32 (abfd
, src
->vn_next
, dst
->vn_next
);
154 /* Swap in a Vernaux structure. */
157 _bfd_elf_swap_vernaux_in (abfd
, src
, dst
)
159 const Elf_External_Vernaux
*src
;
160 Elf_Internal_Vernaux
*dst
;
162 dst
->vna_hash
= bfd_h_get_32 (abfd
, src
->vna_hash
);
163 dst
->vna_flags
= bfd_h_get_16 (abfd
, src
->vna_flags
);
164 dst
->vna_other
= bfd_h_get_16 (abfd
, src
->vna_other
);
165 dst
->vna_name
= bfd_h_get_32 (abfd
, src
->vna_name
);
166 dst
->vna_next
= bfd_h_get_32 (abfd
, src
->vna_next
);
169 /* Swap out a Vernaux structure. */
172 _bfd_elf_swap_vernaux_out (abfd
, src
, dst
)
174 const Elf_Internal_Vernaux
*src
;
175 Elf_External_Vernaux
*dst
;
177 bfd_h_put_32 (abfd
, src
->vna_hash
, dst
->vna_hash
);
178 bfd_h_put_16 (abfd
, src
->vna_flags
, dst
->vna_flags
);
179 bfd_h_put_16 (abfd
, src
->vna_other
, dst
->vna_other
);
180 bfd_h_put_32 (abfd
, src
->vna_name
, dst
->vna_name
);
181 bfd_h_put_32 (abfd
, src
->vna_next
, dst
->vna_next
);
184 /* Swap in a Versym structure. */
187 _bfd_elf_swap_versym_in (abfd
, src
, dst
)
189 const Elf_External_Versym
*src
;
190 Elf_Internal_Versym
*dst
;
192 dst
->vs_vers
= bfd_h_get_16 (abfd
, src
->vs_vers
);
195 /* Swap out a Versym structure. */
198 _bfd_elf_swap_versym_out (abfd
, src
, dst
)
200 const Elf_Internal_Versym
*src
;
201 Elf_External_Versym
*dst
;
203 bfd_h_put_16 (abfd
, src
->vs_vers
, dst
->vs_vers
);
206 /* Standard ELF hash function. Do not change this function; you will
207 cause invalid hash tables to be generated. */
210 bfd_elf_hash (namearg
)
213 const unsigned char *name
= (const unsigned char *) namearg
;
218 while ((ch
= *name
++) != '\0')
221 if ((g
= (h
& 0xf0000000)) != 0)
224 /* The ELF ABI says `h &= ~g', but this is equivalent in
225 this case and on some machines one insn instead of two. */
232 /* Read a specified number of bytes at a specified offset in an ELF
233 file, into a newly allocated buffer, and return a pointer to the
237 elf_read (abfd
, offset
, size
)
244 if ((buf
= bfd_alloc (abfd
, size
)) == NULL
)
246 if (bfd_seek (abfd
, offset
, SEEK_SET
) == -1)
248 if (bfd_read ((PTR
) buf
, size
, 1, abfd
) != size
)
250 if (bfd_get_error () != bfd_error_system_call
)
251 bfd_set_error (bfd_error_file_truncated
);
258 bfd_elf_mkobject (abfd
)
261 /* this just does initialization */
262 /* coff_mkobject zalloc's space for tdata.coff_obj_data ... */
263 elf_tdata (abfd
) = (struct elf_obj_tdata
*)
264 bfd_zalloc (abfd
, sizeof (struct elf_obj_tdata
));
265 if (elf_tdata (abfd
) == 0)
267 /* since everything is done at close time, do we need any
274 bfd_elf_mkcorefile (abfd
)
277 /* I think this can be done just like an object file. */
278 return bfd_elf_mkobject (abfd
);
282 bfd_elf_get_str_section (abfd
, shindex
)
284 unsigned int shindex
;
286 Elf_Internal_Shdr
**i_shdrp
;
287 char *shstrtab
= NULL
;
289 unsigned int shstrtabsize
;
291 i_shdrp
= elf_elfsections (abfd
);
292 if (i_shdrp
== 0 || i_shdrp
[shindex
] == 0)
295 shstrtab
= (char *) i_shdrp
[shindex
]->contents
;
296 if (shstrtab
== NULL
)
298 /* No cached one, attempt to read, and cache what we read. */
299 offset
= i_shdrp
[shindex
]->sh_offset
;
300 shstrtabsize
= i_shdrp
[shindex
]->sh_size
;
301 shstrtab
= elf_read (abfd
, offset
, shstrtabsize
);
302 i_shdrp
[shindex
]->contents
= (PTR
) shstrtab
;
308 bfd_elf_string_from_elf_section (abfd
, shindex
, strindex
)
310 unsigned int shindex
;
311 unsigned int strindex
;
313 Elf_Internal_Shdr
*hdr
;
318 hdr
= elf_elfsections (abfd
)[shindex
];
320 if (hdr
->contents
== NULL
321 && bfd_elf_get_str_section (abfd
, shindex
) == NULL
)
324 if (strindex
>= hdr
->sh_size
)
326 (*_bfd_error_handler
)
327 (_("%s: invalid string offset %u >= %lu for section `%s'"),
328 bfd_get_filename (abfd
), strindex
, (unsigned long) hdr
->sh_size
,
329 ((shindex
== elf_elfheader(abfd
)->e_shstrndx
330 && strindex
== hdr
->sh_name
)
332 : elf_string_from_elf_strtab (abfd
, hdr
->sh_name
)));
336 return ((char *) hdr
->contents
) + strindex
;
339 /* Make a BFD section from an ELF section. We store a pointer to the
340 BFD section in the bfd_section field of the header. */
343 _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
)
345 Elf_Internal_Shdr
*hdr
;
351 if (hdr
->bfd_section
!= NULL
)
353 BFD_ASSERT (strcmp (name
,
354 bfd_get_section_name (abfd
, hdr
->bfd_section
)) == 0);
358 newsect
= bfd_make_section_anyway (abfd
, name
);
362 newsect
->filepos
= hdr
->sh_offset
;
364 if (! bfd_set_section_vma (abfd
, newsect
, hdr
->sh_addr
)
365 || ! bfd_set_section_size (abfd
, newsect
, hdr
->sh_size
)
366 || ! bfd_set_section_alignment (abfd
, newsect
,
367 bfd_log2 (hdr
->sh_addralign
)))
370 flags
= SEC_NO_FLAGS
;
371 if (hdr
->sh_type
!= SHT_NOBITS
)
372 flags
|= SEC_HAS_CONTENTS
;
373 if ((hdr
->sh_flags
& SHF_ALLOC
) != 0)
376 if (hdr
->sh_type
!= SHT_NOBITS
)
379 if ((hdr
->sh_flags
& SHF_WRITE
) == 0)
380 flags
|= SEC_READONLY
;
381 if ((hdr
->sh_flags
& SHF_EXECINSTR
) != 0)
383 else if ((flags
& SEC_LOAD
) != 0)
386 /* The debugging sections appear to be recognized only by name, not
388 if (strncmp (name
, ".debug", sizeof ".debug" - 1) == 0
389 || strncmp (name
, ".line", sizeof ".line" - 1) == 0
390 || strncmp (name
, ".stab", sizeof ".stab" - 1) == 0)
391 flags
|= SEC_DEBUGGING
;
393 /* As a GNU extension, if the name begins with .gnu.linkonce, we
394 only link a single copy of the section. This is used to support
395 g++. g++ will emit each template expansion in its own section.
396 The symbols will be defined as weak, so that multiple definitions
397 are permitted. The GNU linker extension is to actually discard
398 all but one of the sections. */
399 if (strncmp (name
, ".gnu.linkonce", sizeof ".gnu.linkonce" - 1) == 0)
400 flags
|= SEC_LINK_ONCE
| SEC_LINK_DUPLICATES_DISCARD
;
402 if (! bfd_set_section_flags (abfd
, newsect
, flags
))
405 if ((flags
& SEC_ALLOC
) != 0)
407 Elf_Internal_Phdr
*phdr
;
410 /* Look through the phdrs to see if we need to adjust the lma.
411 If all the p_paddr fields are zero, we ignore them, since
412 some ELF linkers produce such output. */
413 phdr
= elf_tdata (abfd
)->phdr
;
414 for (i
= 0; i
< elf_elfheader (abfd
)->e_phnum
; i
++, phdr
++)
416 if (phdr
->p_paddr
!= 0)
419 if (i
< elf_elfheader (abfd
)->e_phnum
)
421 phdr
= elf_tdata (abfd
)->phdr
;
422 for (i
= 0; i
< elf_elfheader (abfd
)->e_phnum
; i
++, phdr
++)
424 if (phdr
->p_type
== PT_LOAD
425 && phdr
->p_vaddr
!= phdr
->p_paddr
426 && phdr
->p_vaddr
<= hdr
->sh_addr
427 && (phdr
->p_vaddr
+ phdr
->p_memsz
428 >= hdr
->sh_addr
+ hdr
->sh_size
)
429 && ((flags
& SEC_LOAD
) == 0
430 || (phdr
->p_offset
<= (bfd_vma
) hdr
->sh_offset
431 && (phdr
->p_offset
+ phdr
->p_filesz
432 >= hdr
->sh_offset
+ hdr
->sh_size
))))
434 newsect
->lma
+= phdr
->p_paddr
- phdr
->p_vaddr
;
441 hdr
->bfd_section
= newsect
;
442 elf_section_data (newsect
)->this_hdr
= *hdr
;
452 struct elf_internal_shdr *bfd_elf_find_section (bfd *abfd, char *name);
455 Helper functions for GDB to locate the string tables.
456 Since BFD hides string tables from callers, GDB needs to use an
457 internal hook to find them. Sun's .stabstr, in particular,
458 isn't even pointed to by the .stab section, so ordinary
459 mechanisms wouldn't work to find it, even if we had some.
462 struct elf_internal_shdr
*
463 bfd_elf_find_section (abfd
, name
)
467 Elf_Internal_Shdr
**i_shdrp
;
472 i_shdrp
= elf_elfsections (abfd
);
475 shstrtab
= bfd_elf_get_str_section
476 (abfd
, elf_elfheader (abfd
)->e_shstrndx
);
477 if (shstrtab
!= NULL
)
479 max
= elf_elfheader (abfd
)->e_shnum
;
480 for (i
= 1; i
< max
; i
++)
481 if (!strcmp (&shstrtab
[i_shdrp
[i
]->sh_name
], name
))
488 const char *const bfd_elf_section_type_names
[] = {
489 "SHT_NULL", "SHT_PROGBITS", "SHT_SYMTAB", "SHT_STRTAB",
490 "SHT_RELA", "SHT_HASH", "SHT_DYNAMIC", "SHT_NOTE",
491 "SHT_NOBITS", "SHT_REL", "SHT_SHLIB", "SHT_DYNSYM",
494 /* ELF relocs are against symbols. If we are producing relocateable
495 output, and the reloc is against an external symbol, and nothing
496 has given us any additional addend, the resulting reloc will also
497 be against the same symbol. In such a case, we don't want to
498 change anything about the way the reloc is handled, since it will
499 all be done at final link time. Rather than put special case code
500 into bfd_perform_relocation, all the reloc types use this howto
501 function. It just short circuits the reloc if producing
502 relocateable output against an external symbol. */
505 bfd_reloc_status_type
506 bfd_elf_generic_reloc (abfd
,
513 bfd
*abfd ATTRIBUTE_UNUSED
;
514 arelent
*reloc_entry
;
516 PTR data ATTRIBUTE_UNUSED
;
517 asection
*input_section
;
519 char **error_message ATTRIBUTE_UNUSED
;
521 if (output_bfd
!= (bfd
*) NULL
522 && (symbol
->flags
& BSF_SECTION_SYM
) == 0
523 && (! reloc_entry
->howto
->partial_inplace
524 || reloc_entry
->addend
== 0))
526 reloc_entry
->address
+= input_section
->output_offset
;
530 return bfd_reloc_continue
;
533 /* Print out the program headers. */
536 _bfd_elf_print_private_bfd_data (abfd
, farg
)
540 FILE *f
= (FILE *) farg
;
541 Elf_Internal_Phdr
*p
;
543 bfd_byte
*dynbuf
= NULL
;
545 p
= elf_tdata (abfd
)->phdr
;
550 fprintf (f
, _("\nProgram Header:\n"));
551 c
= elf_elfheader (abfd
)->e_phnum
;
552 for (i
= 0; i
< c
; i
++, p
++)
559 case PT_NULL
: s
= "NULL"; break;
560 case PT_LOAD
: s
= "LOAD"; break;
561 case PT_DYNAMIC
: s
= "DYNAMIC"; break;
562 case PT_INTERP
: s
= "INTERP"; break;
563 case PT_NOTE
: s
= "NOTE"; break;
564 case PT_SHLIB
: s
= "SHLIB"; break;
565 case PT_PHDR
: s
= "PHDR"; break;
566 default: sprintf (buf
, "0x%lx", p
->p_type
); s
= buf
; break;
568 fprintf (f
, "%8s off 0x", s
);
569 fprintf_vma (f
, p
->p_offset
);
570 fprintf (f
, " vaddr 0x");
571 fprintf_vma (f
, p
->p_vaddr
);
572 fprintf (f
, " paddr 0x");
573 fprintf_vma (f
, p
->p_paddr
);
574 fprintf (f
, " align 2**%u\n", bfd_log2 (p
->p_align
));
575 fprintf (f
, " filesz 0x");
576 fprintf_vma (f
, p
->p_filesz
);
577 fprintf (f
, " memsz 0x");
578 fprintf_vma (f
, p
->p_memsz
);
579 fprintf (f
, " flags %c%c%c",
580 (p
->p_flags
& PF_R
) != 0 ? 'r' : '-',
581 (p
->p_flags
& PF_W
) != 0 ? 'w' : '-',
582 (p
->p_flags
& PF_X
) != 0 ? 'x' : '-');
583 if ((p
->p_flags
&~ (PF_R
| PF_W
| PF_X
)) != 0)
584 fprintf (f
, " %lx", p
->p_flags
&~ (PF_R
| PF_W
| PF_X
));
589 s
= bfd_get_section_by_name (abfd
, ".dynamic");
594 bfd_byte
*extdyn
, *extdynend
;
596 void (*swap_dyn_in
) PARAMS ((bfd
*, const PTR
, Elf_Internal_Dyn
*));
598 fprintf (f
, _("\nDynamic Section:\n"));
600 dynbuf
= (bfd_byte
*) bfd_malloc (s
->_raw_size
);
603 if (! bfd_get_section_contents (abfd
, s
, (PTR
) dynbuf
, (file_ptr
) 0,
607 elfsec
= _bfd_elf_section_from_bfd_section (abfd
, s
);
610 link
= elf_elfsections (abfd
)[elfsec
]->sh_link
;
612 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
613 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
616 extdynend
= extdyn
+ s
->_raw_size
;
617 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
619 Elf_Internal_Dyn dyn
;
624 (*swap_dyn_in
) (abfd
, (PTR
) extdyn
, &dyn
);
626 if (dyn
.d_tag
== DT_NULL
)
633 sprintf (ab
, "0x%lx", (unsigned long) dyn
.d_tag
);
637 case DT_NEEDED
: name
= "NEEDED"; stringp
= true; break;
638 case DT_PLTRELSZ
: name
= "PLTRELSZ"; break;
639 case DT_PLTGOT
: name
= "PLTGOT"; break;
640 case DT_HASH
: name
= "HASH"; break;
641 case DT_STRTAB
: name
= "STRTAB"; break;
642 case DT_SYMTAB
: name
= "SYMTAB"; break;
643 case DT_RELA
: name
= "RELA"; break;
644 case DT_RELASZ
: name
= "RELASZ"; break;
645 case DT_RELAENT
: name
= "RELAENT"; break;
646 case DT_STRSZ
: name
= "STRSZ"; break;
647 case DT_SYMENT
: name
= "SYMENT"; break;
648 case DT_INIT
: name
= "INIT"; break;
649 case DT_FINI
: name
= "FINI"; break;
650 case DT_SONAME
: name
= "SONAME"; stringp
= true; break;
651 case DT_RPATH
: name
= "RPATH"; stringp
= true; break;
652 case DT_SYMBOLIC
: name
= "SYMBOLIC"; break;
653 case DT_REL
: name
= "REL"; break;
654 case DT_RELSZ
: name
= "RELSZ"; break;
655 case DT_RELENT
: name
= "RELENT"; break;
656 case DT_PLTREL
: name
= "PLTREL"; break;
657 case DT_DEBUG
: name
= "DEBUG"; break;
658 case DT_TEXTREL
: name
= "TEXTREL"; break;
659 case DT_JMPREL
: name
= "JMPREL"; break;
660 case DT_BIND_NOW
: name
= "BIND_NOW"; break;
661 case DT_INIT_ARRAY
: name
= "INIT_ARRAY"; break;
662 case DT_FINI_ARRAY
: name
= "FINI_ARRAY"; break;
663 case DT_INIT_ARRAYSZ
: name
= "INIT_ARRAYSZ"; break;
664 case DT_FINI_ARRAYSZ
: name
= "FINI_ARRAYSZ"; break;
665 case DT_RUNPATH
: name
= "RUNPATH"; stringp
= true; break;
666 case DT_FLAGS
: name
= "FLAGS"; break;
667 case DT_PREINIT_ARRAY
: name
= "PREINIT_ARRAY"; break;
668 case DT_PREINIT_ARRAYSZ
: name
= "PREINIT_ARRAYSZ"; break;
669 case DT_CHECKSUM
: name
= "CHECKSUM"; break;
670 case DT_PLTPADSZ
: name
= "PLTPADSZ"; break;
671 case DT_MOVEENT
: name
= "MOVEENT"; break;
672 case DT_MOVESZ
: name
= "MOVESZ"; break;
673 case DT_FEATURE
: name
= "FEATURE"; break;
674 case DT_POSFLAG_1
: name
= "POSFLAG_1"; break;
675 case DT_SYMINSZ
: name
= "SYMINSZ"; break;
676 case DT_SYMINENT
: name
= "SYMINENT"; break;
677 case DT_CONFIG
: name
= "CONFIG"; break;
678 case DT_DEPAUDIT
: name
= "DEPAUDIT"; break;
679 case DT_AUDIT
: name
= "AUDIT"; break;
680 case DT_PLTPAD
: name
= "PLTPAD"; break;
681 case DT_MOVETAB
: name
= "MOVETAB"; break;
682 case DT_SYMINFO
: name
= "SYMINFO"; break;
683 case DT_RELACOUNT
: name
= "RELACOUNT"; break;
684 case DT_RELCOUNT
: name
= "RELCOUNT"; break;
685 case DT_FLAGS_1
: name
= "FLAGS_1"; break;
686 case DT_VERSYM
: name
= "VERSYM"; break;
687 case DT_VERDEF
: name
= "VERDEF"; break;
688 case DT_VERDEFNUM
: name
= "VERDEFNUM"; break;
689 case DT_VERNEED
: name
= "VERNEED"; break;
690 case DT_VERNEEDNUM
: name
= "VERNEEDNUM"; break;
691 case DT_AUXILIARY
: name
= "AUXILIARY"; stringp
= true; break;
692 case DT_USED
: name
= "USED"; break;
693 case DT_FILTER
: name
= "FILTER"; stringp
= true; break;
696 fprintf (f
, " %-11s ", name
);
698 fprintf (f
, "0x%lx", (unsigned long) dyn
.d_un
.d_val
);
703 string
= bfd_elf_string_from_elf_section (abfd
, link
,
707 fprintf (f
, "%s", string
);
716 if ((elf_dynverdef (abfd
) != 0 && elf_tdata (abfd
)->verdef
== NULL
)
717 || (elf_dynverref (abfd
) != 0 && elf_tdata (abfd
)->verref
== NULL
))
719 if (! _bfd_elf_slurp_version_tables (abfd
))
723 if (elf_dynverdef (abfd
) != 0)
725 Elf_Internal_Verdef
*t
;
727 fprintf (f
, _("\nVersion definitions:\n"));
728 for (t
= elf_tdata (abfd
)->verdef
; t
!= NULL
; t
= t
->vd_nextdef
)
730 fprintf (f
, "%d 0x%2.2x 0x%8.8lx %s\n", t
->vd_ndx
,
731 t
->vd_flags
, t
->vd_hash
, t
->vd_nodename
);
732 if (t
->vd_auxptr
->vda_nextptr
!= NULL
)
734 Elf_Internal_Verdaux
*a
;
737 for (a
= t
->vd_auxptr
->vda_nextptr
;
740 fprintf (f
, "%s ", a
->vda_nodename
);
746 if (elf_dynverref (abfd
) != 0)
748 Elf_Internal_Verneed
*t
;
750 fprintf (f
, _("\nVersion References:\n"));
751 for (t
= elf_tdata (abfd
)->verref
; t
!= NULL
; t
= t
->vn_nextref
)
753 Elf_Internal_Vernaux
*a
;
755 fprintf (f
, _(" required from %s:\n"), t
->vn_filename
);
756 for (a
= t
->vn_auxptr
; a
!= NULL
; a
= a
->vna_nextptr
)
757 fprintf (f
, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a
->vna_hash
,
758 a
->vna_flags
, a
->vna_other
, a
->vna_nodename
);
770 /* Display ELF-specific fields of a symbol. */
773 bfd_elf_print_symbol (abfd
, filep
, symbol
, how
)
777 bfd_print_symbol_type how
;
779 FILE *file
= (FILE *) filep
;
782 case bfd_print_symbol_name
:
783 fprintf (file
, "%s", symbol
->name
);
785 case bfd_print_symbol_more
:
786 fprintf (file
, "elf ");
787 fprintf_vma (file
, symbol
->value
);
788 fprintf (file
, " %lx", (long) symbol
->flags
);
790 case bfd_print_symbol_all
:
792 CONST
char *section_name
;
793 CONST
char *name
= NULL
;
794 struct elf_backend_data
*bed
;
795 unsigned char st_other
;
797 section_name
= symbol
->section
? symbol
->section
->name
: "(*none*)";
799 bed
= get_elf_backend_data (abfd
);
800 if (bed
->elf_backend_print_symbol_all
)
801 name
= (*bed
->elf_backend_print_symbol_all
) (abfd
, filep
, symbol
);
806 bfd_print_symbol_vandf ((PTR
) file
, symbol
);
809 fprintf (file
, " %s\t", section_name
);
810 /* Print the "other" value for a symbol. For common symbols,
811 we've already printed the size; now print the alignment.
812 For other symbols, we have no specified alignment, and
813 we've printed the address; now print the size. */
815 (bfd_is_com_section (symbol
->section
)
816 ? ((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_value
817 : ((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_size
));
819 /* If we have version information, print it. */
820 if (elf_tdata (abfd
)->dynversym_section
!= 0
821 && (elf_tdata (abfd
)->dynverdef_section
!= 0
822 || elf_tdata (abfd
)->dynverref_section
!= 0))
825 const char *version_string
;
827 vernum
= ((elf_symbol_type
*) symbol
)->version
& VERSYM_VERSION
;
831 else if (vernum
== 1)
832 version_string
= "Base";
833 else if (vernum
<= elf_tdata (abfd
)->cverdefs
)
835 elf_tdata (abfd
)->verdef
[vernum
- 1].vd_nodename
;
838 Elf_Internal_Verneed
*t
;
841 for (t
= elf_tdata (abfd
)->verref
;
845 Elf_Internal_Vernaux
*a
;
847 for (a
= t
->vn_auxptr
; a
!= NULL
; a
= a
->vna_nextptr
)
849 if (a
->vna_other
== vernum
)
851 version_string
= a
->vna_nodename
;
858 if ((((elf_symbol_type
*) symbol
)->version
& VERSYM_HIDDEN
) == 0)
859 fprintf (file
, " %-11s", version_string
);
864 fprintf (file
, " (%s)", version_string
);
865 for (i
= 10 - strlen (version_string
); i
> 0; --i
)
870 /* If the st_other field is not zero, print it. */
871 st_other
= ((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_other
;
876 case STV_INTERNAL
: fprintf (file
, " .internal"); break;
877 case STV_HIDDEN
: fprintf (file
, " .hidden"); break;
878 case STV_PROTECTED
: fprintf (file
, " .protected"); break;
880 /* Some other non-defined flags are also present, so print
882 fprintf (file
, " 0x%02x", (unsigned int) st_other
);
885 fprintf (file
, " %s", name
);
891 /* Create an entry in an ELF linker hash table. */
893 struct bfd_hash_entry
*
894 _bfd_elf_link_hash_newfunc (entry
, table
, string
)
895 struct bfd_hash_entry
*entry
;
896 struct bfd_hash_table
*table
;
899 struct elf_link_hash_entry
*ret
= (struct elf_link_hash_entry
*) entry
;
901 /* Allocate the structure if it has not already been allocated by a
903 if (ret
== (struct elf_link_hash_entry
*) NULL
)
904 ret
= ((struct elf_link_hash_entry
*)
905 bfd_hash_allocate (table
, sizeof (struct elf_link_hash_entry
)));
906 if (ret
== (struct elf_link_hash_entry
*) NULL
)
907 return (struct bfd_hash_entry
*) ret
;
909 /* Call the allocation method of the superclass. */
910 ret
= ((struct elf_link_hash_entry
*)
911 _bfd_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
913 if (ret
!= (struct elf_link_hash_entry
*) NULL
)
915 /* Set local fields. */
919 ret
->dynstr_index
= 0;
921 ret
->got
.offset
= (bfd_vma
) -1;
922 ret
->plt
.offset
= (bfd_vma
) -1;
923 ret
->linker_section_pointer
= (elf_linker_section_pointers_t
*)0;
924 ret
->verinfo
.verdef
= NULL
;
925 ret
->vtable_entries_used
= NULL
;
926 ret
->vtable_entries_size
= 0;
927 ret
->vtable_parent
= NULL
;
928 ret
->type
= STT_NOTYPE
;
930 /* Assume that we have been called by a non-ELF symbol reader.
931 This flag is then reset by the code which reads an ELF input
932 file. This ensures that a symbol created by a non-ELF symbol
933 reader will have the flag set correctly. */
934 ret
->elf_link_hash_flags
= ELF_LINK_NON_ELF
;
937 return (struct bfd_hash_entry
*) ret
;
940 /* Copy data from an indirect symbol to its direct symbol, hiding the
941 old indirect symbol. */
944 _bfd_elf_link_hash_copy_indirect (dir
, ind
)
945 struct elf_link_hash_entry
*dir
, *ind
;
947 /* Copy down any references that we may have already seen to the
948 symbol which just became indirect. */
950 dir
->elf_link_hash_flags
|=
951 (ind
->elf_link_hash_flags
952 & (ELF_LINK_HASH_REF_DYNAMIC
953 | ELF_LINK_HASH_REF_REGULAR
954 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
955 | ELF_LINK_NON_GOT_REF
));
957 /* Copy over the global and procedure linkage table offset entries.
958 These may have been already set up by a check_relocs routine. */
959 if (dir
->got
.offset
== (bfd_vma
) -1)
961 dir
->got
.offset
= ind
->got
.offset
;
962 ind
->got
.offset
= (bfd_vma
) -1;
964 BFD_ASSERT (ind
->got
.offset
== (bfd_vma
) -1);
966 if (dir
->plt
.offset
== (bfd_vma
) -1)
968 dir
->plt
.offset
= ind
->plt
.offset
;
969 ind
->plt
.offset
= (bfd_vma
) -1;
971 BFD_ASSERT (ind
->plt
.offset
== (bfd_vma
) -1);
973 if (dir
->dynindx
== -1)
975 dir
->dynindx
= ind
->dynindx
;
976 dir
->dynstr_index
= ind
->dynstr_index
;
978 ind
->dynstr_index
= 0;
980 BFD_ASSERT (ind
->dynindx
== -1);
984 _bfd_elf_link_hash_hide_symbol(info
, h
)
985 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
986 struct elf_link_hash_entry
*h
;
988 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
990 h
->plt
.offset
= (bfd_vma
) -1;
993 /* Initialize an ELF linker hash table. */
996 _bfd_elf_link_hash_table_init (table
, abfd
, newfunc
)
997 struct elf_link_hash_table
*table
;
999 struct bfd_hash_entry
*(*newfunc
) PARAMS ((struct bfd_hash_entry
*,
1000 struct bfd_hash_table
*,
1003 table
->dynamic_sections_created
= false;
1004 table
->dynobj
= NULL
;
1005 /* The first dynamic symbol is a dummy. */
1006 table
->dynsymcount
= 1;
1007 table
->dynstr
= NULL
;
1008 table
->bucketcount
= 0;
1009 table
->needed
= NULL
;
1011 table
->stab_info
= NULL
;
1012 table
->dynlocal
= NULL
;
1013 return _bfd_link_hash_table_init (&table
->root
, abfd
, newfunc
);
1016 /* Create an ELF linker hash table. */
1018 struct bfd_link_hash_table
*
1019 _bfd_elf_link_hash_table_create (abfd
)
1022 struct elf_link_hash_table
*ret
;
1024 ret
= ((struct elf_link_hash_table
*)
1025 bfd_alloc (abfd
, sizeof (struct elf_link_hash_table
)));
1026 if (ret
== (struct elf_link_hash_table
*) NULL
)
1029 if (! _bfd_elf_link_hash_table_init (ret
, abfd
, _bfd_elf_link_hash_newfunc
))
1031 bfd_release (abfd
, ret
);
1038 /* This is a hook for the ELF emulation code in the generic linker to
1039 tell the backend linker what file name to use for the DT_NEEDED
1040 entry for a dynamic object. The generic linker passes name as an
1041 empty string to indicate that no DT_NEEDED entry should be made. */
1044 bfd_elf_set_dt_needed_name (abfd
, name
)
1048 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1049 && bfd_get_format (abfd
) == bfd_object
)
1050 elf_dt_name (abfd
) = name
;
1053 /* Get the list of DT_NEEDED entries for a link. This is a hook for
1054 the linker ELF emulation code. */
1056 struct bfd_link_needed_list
*
1057 bfd_elf_get_needed_list (abfd
, info
)
1058 bfd
*abfd ATTRIBUTE_UNUSED
;
1059 struct bfd_link_info
*info
;
1061 if (info
->hash
->creator
->flavour
!= bfd_target_elf_flavour
)
1063 return elf_hash_table (info
)->needed
;
1066 /* Get the name actually used for a dynamic object for a link. This
1067 is the SONAME entry if there is one. Otherwise, it is the string
1068 passed to bfd_elf_set_dt_needed_name, or it is the filename. */
1071 bfd_elf_get_dt_soname (abfd
)
1074 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1075 && bfd_get_format (abfd
) == bfd_object
)
1076 return elf_dt_name (abfd
);
1080 /* Get the list of DT_NEEDED entries from a BFD. This is a hook for
1081 the ELF linker emulation code. */
1084 bfd_elf_get_bfd_needed_list (abfd
, pneeded
)
1086 struct bfd_link_needed_list
**pneeded
;
1089 bfd_byte
*dynbuf
= NULL
;
1092 bfd_byte
*extdyn
, *extdynend
;
1094 void (*swap_dyn_in
) PARAMS ((bfd
*, const PTR
, Elf_Internal_Dyn
*));
1098 if (bfd_get_flavour (abfd
) != bfd_target_elf_flavour
1099 || bfd_get_format (abfd
) != bfd_object
)
1102 s
= bfd_get_section_by_name (abfd
, ".dynamic");
1103 if (s
== NULL
|| s
->_raw_size
== 0)
1106 dynbuf
= (bfd_byte
*) bfd_malloc (s
->_raw_size
);
1110 if (! bfd_get_section_contents (abfd
, s
, (PTR
) dynbuf
, (file_ptr
) 0,
1114 elfsec
= _bfd_elf_section_from_bfd_section (abfd
, s
);
1118 link
= elf_elfsections (abfd
)[elfsec
]->sh_link
;
1120 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
1121 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
1124 extdynend
= extdyn
+ s
->_raw_size
;
1125 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
1127 Elf_Internal_Dyn dyn
;
1129 (*swap_dyn_in
) (abfd
, (PTR
) extdyn
, &dyn
);
1131 if (dyn
.d_tag
== DT_NULL
)
1134 if (dyn
.d_tag
== DT_NEEDED
)
1137 struct bfd_link_needed_list
*l
;
1139 string
= bfd_elf_string_from_elf_section (abfd
, link
,
1144 l
= (struct bfd_link_needed_list
*) bfd_alloc (abfd
, sizeof *l
);
1165 /* Allocate an ELF string table--force the first byte to be zero. */
1167 struct bfd_strtab_hash
*
1168 _bfd_elf_stringtab_init ()
1170 struct bfd_strtab_hash
*ret
;
1172 ret
= _bfd_stringtab_init ();
1177 loc
= _bfd_stringtab_add (ret
, "", true, false);
1178 BFD_ASSERT (loc
== 0 || loc
== (bfd_size_type
) -1);
1179 if (loc
== (bfd_size_type
) -1)
1181 _bfd_stringtab_free (ret
);
1188 /* ELF .o/exec file reading */
1190 /* Create a new bfd section from an ELF section header. */
1193 bfd_section_from_shdr (abfd
, shindex
)
1195 unsigned int shindex
;
1197 Elf_Internal_Shdr
*hdr
= elf_elfsections (abfd
)[shindex
];
1198 Elf_Internal_Ehdr
*ehdr
= elf_elfheader (abfd
);
1199 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1202 name
= elf_string_from_elf_strtab (abfd
, hdr
->sh_name
);
1204 switch (hdr
->sh_type
)
1207 /* Inactive section. Throw it away. */
1210 case SHT_PROGBITS
: /* Normal section with contents. */
1211 case SHT_DYNAMIC
: /* Dynamic linking information. */
1212 case SHT_NOBITS
: /* .bss section. */
1213 case SHT_HASH
: /* .hash section. */
1214 case SHT_NOTE
: /* .note section. */
1215 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1217 case SHT_SYMTAB
: /* A symbol table */
1218 if (elf_onesymtab (abfd
) == shindex
)
1221 BFD_ASSERT (hdr
->sh_entsize
== bed
->s
->sizeof_sym
);
1222 BFD_ASSERT (elf_onesymtab (abfd
) == 0);
1223 elf_onesymtab (abfd
) = shindex
;
1224 elf_tdata (abfd
)->symtab_hdr
= *hdr
;
1225 elf_elfsections (abfd
)[shindex
] = hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1226 abfd
->flags
|= HAS_SYMS
;
1228 /* Sometimes a shared object will map in the symbol table. If
1229 SHF_ALLOC is set, and this is a shared object, then we also
1230 treat this section as a BFD section. We can not base the
1231 decision purely on SHF_ALLOC, because that flag is sometimes
1232 set in a relocateable object file, which would confuse the
1234 if ((hdr
->sh_flags
& SHF_ALLOC
) != 0
1235 && (abfd
->flags
& DYNAMIC
) != 0
1236 && ! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
))
1241 case SHT_DYNSYM
: /* A dynamic symbol table */
1242 if (elf_dynsymtab (abfd
) == shindex
)
1245 BFD_ASSERT (hdr
->sh_entsize
== bed
->s
->sizeof_sym
);
1246 BFD_ASSERT (elf_dynsymtab (abfd
) == 0);
1247 elf_dynsymtab (abfd
) = shindex
;
1248 elf_tdata (abfd
)->dynsymtab_hdr
= *hdr
;
1249 elf_elfsections (abfd
)[shindex
] = hdr
= &elf_tdata (abfd
)->dynsymtab_hdr
;
1250 abfd
->flags
|= HAS_SYMS
;
1252 /* Besides being a symbol table, we also treat this as a regular
1253 section, so that objcopy can handle it. */
1254 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1256 case SHT_STRTAB
: /* A string table */
1257 if (hdr
->bfd_section
!= NULL
)
1259 if (ehdr
->e_shstrndx
== shindex
)
1261 elf_tdata (abfd
)->shstrtab_hdr
= *hdr
;
1262 elf_elfsections (abfd
)[shindex
] = &elf_tdata (abfd
)->shstrtab_hdr
;
1268 for (i
= 1; i
< ehdr
->e_shnum
; i
++)
1270 Elf_Internal_Shdr
*hdr2
= elf_elfsections (abfd
)[i
];
1271 if (hdr2
->sh_link
== shindex
)
1273 if (! bfd_section_from_shdr (abfd
, i
))
1275 if (elf_onesymtab (abfd
) == i
)
1277 elf_tdata (abfd
)->strtab_hdr
= *hdr
;
1278 elf_elfsections (abfd
)[shindex
] =
1279 &elf_tdata (abfd
)->strtab_hdr
;
1282 if (elf_dynsymtab (abfd
) == i
)
1284 elf_tdata (abfd
)->dynstrtab_hdr
= *hdr
;
1285 elf_elfsections (abfd
)[shindex
] = hdr
=
1286 &elf_tdata (abfd
)->dynstrtab_hdr
;
1287 /* We also treat this as a regular section, so
1288 that objcopy can handle it. */
1291 #if 0 /* Not handling other string tables specially right now. */
1292 hdr2
= elf_elfsections (abfd
)[i
]; /* in case it moved */
1293 /* We have a strtab for some random other section. */
1294 newsect
= (asection
*) hdr2
->bfd_section
;
1297 hdr
->bfd_section
= newsect
;
1298 hdr2
= &elf_section_data (newsect
)->str_hdr
;
1300 elf_elfsections (abfd
)[shindex
] = hdr2
;
1306 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1310 /* *These* do a lot of work -- but build no sections! */
1312 asection
*target_sect
;
1313 Elf_Internal_Shdr
*hdr2
;
1315 /* Check for a bogus link to avoid crashing. */
1316 if (hdr
->sh_link
>= ehdr
->e_shnum
)
1318 ((*_bfd_error_handler
)
1319 (_("%s: invalid link %lu for reloc section %s (index %u)"),
1320 bfd_get_filename (abfd
), hdr
->sh_link
, name
, shindex
));
1321 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1324 /* For some incomprehensible reason Oracle distributes
1325 libraries for Solaris in which some of the objects have
1326 bogus sh_link fields. It would be nice if we could just
1327 reject them, but, unfortunately, some people need to use
1328 them. We scan through the section headers; if we find only
1329 one suitable symbol table, we clobber the sh_link to point
1330 to it. I hope this doesn't break anything. */
1331 if (elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
!= SHT_SYMTAB
1332 && elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
!= SHT_DYNSYM
)
1338 for (scan
= 1; scan
< ehdr
->e_shnum
; scan
++)
1340 if (elf_elfsections (abfd
)[scan
]->sh_type
== SHT_SYMTAB
1341 || elf_elfsections (abfd
)[scan
]->sh_type
== SHT_DYNSYM
)
1352 hdr
->sh_link
= found
;
1355 /* Get the symbol table. */
1356 if (elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
== SHT_SYMTAB
1357 && ! bfd_section_from_shdr (abfd
, hdr
->sh_link
))
1360 /* If this reloc section does not use the main symbol table we
1361 don't treat it as a reloc section. BFD can't adequately
1362 represent such a section, so at least for now, we don't
1363 try. We just present it as a normal section. We also
1364 can't use it as a reloc section if it points to the null
1366 if (hdr
->sh_link
!= elf_onesymtab (abfd
) || hdr
->sh_info
== SHN_UNDEF
)
1367 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1369 if (! bfd_section_from_shdr (abfd
, hdr
->sh_info
))
1371 target_sect
= bfd_section_from_elf_index (abfd
, hdr
->sh_info
);
1372 if (target_sect
== NULL
)
1375 if ((target_sect
->flags
& SEC_RELOC
) == 0
1376 || target_sect
->reloc_count
== 0)
1377 hdr2
= &elf_section_data (target_sect
)->rel_hdr
;
1380 BFD_ASSERT (elf_section_data (target_sect
)->rel_hdr2
== NULL
);
1381 hdr2
= (Elf_Internal_Shdr
*) bfd_alloc (abfd
, sizeof (*hdr2
));
1382 elf_section_data (target_sect
)->rel_hdr2
= hdr2
;
1385 elf_elfsections (abfd
)[shindex
] = hdr2
;
1386 target_sect
->reloc_count
+= hdr
->sh_size
/ hdr
->sh_entsize
;
1387 target_sect
->flags
|= SEC_RELOC
;
1388 target_sect
->relocation
= NULL
;
1389 target_sect
->rel_filepos
= hdr
->sh_offset
;
1390 /* In the section to which the relocations apply, mark whether
1391 its relocations are of the REL or RELA variety. */
1392 if (hdr
->sh_size
!= 0)
1393 elf_section_data (target_sect
)->use_rela_p
1394 = (hdr
->sh_type
== SHT_RELA
);
1395 abfd
->flags
|= HAS_RELOC
;
1400 case SHT_GNU_verdef
:
1401 elf_dynverdef (abfd
) = shindex
;
1402 elf_tdata (abfd
)->dynverdef_hdr
= *hdr
;
1403 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1406 case SHT_GNU_versym
:
1407 elf_dynversym (abfd
) = shindex
;
1408 elf_tdata (abfd
)->dynversym_hdr
= *hdr
;
1409 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1412 case SHT_GNU_verneed
:
1413 elf_dynverref (abfd
) = shindex
;
1414 elf_tdata (abfd
)->dynverref_hdr
= *hdr
;
1415 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1422 /* Check for any processor-specific section types. */
1424 if (bed
->elf_backend_section_from_shdr
)
1425 (*bed
->elf_backend_section_from_shdr
) (abfd
, hdr
, name
);
1433 /* Given an ELF section number, retrieve the corresponding BFD
1437 bfd_section_from_elf_index (abfd
, index
)
1441 BFD_ASSERT (index
> 0 && index
< SHN_LORESERVE
);
1442 if (index
>= elf_elfheader (abfd
)->e_shnum
)
1444 return elf_elfsections (abfd
)[index
]->bfd_section
;
1448 _bfd_elf_new_section_hook (abfd
, sec
)
1452 struct bfd_elf_section_data
*sdata
;
1454 sdata
= (struct bfd_elf_section_data
*) bfd_zalloc (abfd
, sizeof (*sdata
));
1457 sec
->used_by_bfd
= (PTR
) sdata
;
1459 /* Indicate whether or not this section should use RELA relocations. */
1461 = get_elf_backend_data (abfd
)->default_use_rela_p
;
1466 /* Create a new bfd section from an ELF program header.
1468 Since program segments have no names, we generate a synthetic name
1469 of the form segment<NUM>, where NUM is generally the index in the
1470 program header table. For segments that are split (see below) we
1471 generate the names segment<NUM>a and segment<NUM>b.
1473 Note that some program segments may have a file size that is different than
1474 (less than) the memory size. All this means is that at execution the
1475 system must allocate the amount of memory specified by the memory size,
1476 but only initialize it with the first "file size" bytes read from the
1477 file. This would occur for example, with program segments consisting
1478 of combined data+bss.
1480 To handle the above situation, this routine generates TWO bfd sections
1481 for the single program segment. The first has the length specified by
1482 the file size of the segment, and the second has the length specified
1483 by the difference between the two sizes. In effect, the segment is split
1484 into it's initialized and uninitialized parts.
1489 _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, typename
)
1491 Elf_Internal_Phdr
*hdr
;
1493 const char *typename
;
1500 split
= ((hdr
->p_memsz
> 0)
1501 && (hdr
->p_filesz
> 0)
1502 && (hdr
->p_memsz
> hdr
->p_filesz
));
1503 sprintf (namebuf
, "%s%d%s", typename
, index
, split
? "a" : "");
1504 name
= bfd_alloc (abfd
, strlen (namebuf
) + 1);
1507 strcpy (name
, namebuf
);
1508 newsect
= bfd_make_section (abfd
, name
);
1509 if (newsect
== NULL
)
1511 newsect
->vma
= hdr
->p_vaddr
;
1512 newsect
->lma
= hdr
->p_paddr
;
1513 newsect
->_raw_size
= hdr
->p_filesz
;
1514 newsect
->filepos
= hdr
->p_offset
;
1515 newsect
->flags
|= SEC_HAS_CONTENTS
;
1516 if (hdr
->p_type
== PT_LOAD
)
1518 newsect
->flags
|= SEC_ALLOC
;
1519 newsect
->flags
|= SEC_LOAD
;
1520 if (hdr
->p_flags
& PF_X
)
1522 /* FIXME: all we known is that it has execute PERMISSION,
1524 newsect
->flags
|= SEC_CODE
;
1527 if (!(hdr
->p_flags
& PF_W
))
1529 newsect
->flags
|= SEC_READONLY
;
1534 sprintf (namebuf
, "%s%db", typename
, index
);
1535 name
= bfd_alloc (abfd
, strlen (namebuf
) + 1);
1538 strcpy (name
, namebuf
);
1539 newsect
= bfd_make_section (abfd
, name
);
1540 if (newsect
== NULL
)
1542 newsect
->vma
= hdr
->p_vaddr
+ hdr
->p_filesz
;
1543 newsect
->lma
= hdr
->p_paddr
+ hdr
->p_filesz
;
1544 newsect
->_raw_size
= hdr
->p_memsz
- hdr
->p_filesz
;
1545 if (hdr
->p_type
== PT_LOAD
)
1547 newsect
->flags
|= SEC_ALLOC
;
1548 if (hdr
->p_flags
& PF_X
)
1549 newsect
->flags
|= SEC_CODE
;
1551 if (!(hdr
->p_flags
& PF_W
))
1552 newsect
->flags
|= SEC_READONLY
;
1559 bfd_section_from_phdr (abfd
, hdr
, index
)
1561 Elf_Internal_Phdr
*hdr
;
1564 struct elf_backend_data
*bed
;
1566 switch (hdr
->p_type
)
1569 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "null");
1572 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "load");
1575 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "dynamic");
1578 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "interp");
1581 if (! _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "note"))
1583 if (! elfcore_read_notes (abfd
, hdr
->p_offset
, hdr
->p_filesz
))
1588 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "shlib");
1591 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "phdr");
1594 /* Check for any processor-specific program segment types.
1595 If no handler for them, default to making "segment" sections. */
1596 bed
= get_elf_backend_data (abfd
);
1597 if (bed
->elf_backend_section_from_phdr
)
1598 return (*bed
->elf_backend_section_from_phdr
) (abfd
, hdr
, index
);
1600 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "segment");
1604 /* Initialize REL_HDR, the section-header for new section, containing
1605 relocations against ASECT. If USE_RELA_P is true, we use RELA
1606 relocations; otherwise, we use REL relocations. */
1609 _bfd_elf_init_reloc_shdr (abfd
, rel_hdr
, asect
, use_rela_p
)
1611 Elf_Internal_Shdr
*rel_hdr
;
1616 struct elf_backend_data
*bed
;
1618 bed
= get_elf_backend_data (abfd
);
1619 name
= bfd_alloc (abfd
, sizeof ".rela" + strlen (asect
->name
));
1622 sprintf (name
, "%s%s", use_rela_p
? ".rela" : ".rel", asect
->name
);
1624 (unsigned int) _bfd_stringtab_add (elf_shstrtab (abfd
), name
,
1626 if (rel_hdr
->sh_name
== (unsigned int) -1)
1628 rel_hdr
->sh_type
= use_rela_p
? SHT_RELA
: SHT_REL
;
1629 rel_hdr
->sh_entsize
= (use_rela_p
1630 ? bed
->s
->sizeof_rela
1631 : bed
->s
->sizeof_rel
);
1632 rel_hdr
->sh_addralign
= bed
->s
->file_align
;
1633 rel_hdr
->sh_flags
= 0;
1634 rel_hdr
->sh_addr
= 0;
1635 rel_hdr
->sh_size
= 0;
1636 rel_hdr
->sh_offset
= 0;
1641 /* Set up an ELF internal section header for a section. */
1645 elf_fake_sections (abfd
, asect
, failedptrarg
)
1650 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1651 boolean
*failedptr
= (boolean
*) failedptrarg
;
1652 Elf_Internal_Shdr
*this_hdr
;
1656 /* We already failed; just get out of the bfd_map_over_sections
1661 this_hdr
= &elf_section_data (asect
)->this_hdr
;
1663 this_hdr
->sh_name
= (unsigned long) _bfd_stringtab_add (elf_shstrtab (abfd
),
1666 if (this_hdr
->sh_name
== (unsigned long) -1)
1672 this_hdr
->sh_flags
= 0;
1674 if ((asect
->flags
& SEC_ALLOC
) != 0
1675 || asect
->user_set_vma
)
1676 this_hdr
->sh_addr
= asect
->vma
;
1678 this_hdr
->sh_addr
= 0;
1680 this_hdr
->sh_offset
= 0;
1681 this_hdr
->sh_size
= asect
->_raw_size
;
1682 this_hdr
->sh_link
= 0;
1683 this_hdr
->sh_addralign
= 1 << asect
->alignment_power
;
1684 /* The sh_entsize and sh_info fields may have been set already by
1685 copy_private_section_data. */
1687 this_hdr
->bfd_section
= asect
;
1688 this_hdr
->contents
= NULL
;
1690 /* FIXME: This should not be based on section names. */
1691 if (strcmp (asect
->name
, ".dynstr") == 0)
1692 this_hdr
->sh_type
= SHT_STRTAB
;
1693 else if (strcmp (asect
->name
, ".hash") == 0)
1695 this_hdr
->sh_type
= SHT_HASH
;
1696 this_hdr
->sh_entsize
= bed
->s
->sizeof_hash_entry
;
1698 else if (strcmp (asect
->name
, ".dynsym") == 0)
1700 this_hdr
->sh_type
= SHT_DYNSYM
;
1701 this_hdr
->sh_entsize
= bed
->s
->sizeof_sym
;
1703 else if (strcmp (asect
->name
, ".dynamic") == 0)
1705 this_hdr
->sh_type
= SHT_DYNAMIC
;
1706 this_hdr
->sh_entsize
= bed
->s
->sizeof_dyn
;
1708 else if (strncmp (asect
->name
, ".rela", 5) == 0
1709 && get_elf_backend_data (abfd
)->may_use_rela_p
)
1711 this_hdr
->sh_type
= SHT_RELA
;
1712 this_hdr
->sh_entsize
= bed
->s
->sizeof_rela
;
1714 else if (strncmp (asect
->name
, ".rel", 4) == 0
1715 && get_elf_backend_data (abfd
)->may_use_rel_p
)
1717 this_hdr
->sh_type
= SHT_REL
;
1718 this_hdr
->sh_entsize
= bed
->s
->sizeof_rel
;
1720 else if (strncmp (asect
->name
, ".note", 5) == 0)
1721 this_hdr
->sh_type
= SHT_NOTE
;
1722 else if (strncmp (asect
->name
, ".stab", 5) == 0
1723 && strcmp (asect
->name
+ strlen (asect
->name
) - 3, "str") == 0)
1724 this_hdr
->sh_type
= SHT_STRTAB
;
1725 else if (strcmp (asect
->name
, ".gnu.version") == 0)
1727 this_hdr
->sh_type
= SHT_GNU_versym
;
1728 this_hdr
->sh_entsize
= sizeof (Elf_External_Versym
);
1730 else if (strcmp (asect
->name
, ".gnu.version_d") == 0)
1732 this_hdr
->sh_type
= SHT_GNU_verdef
;
1733 this_hdr
->sh_entsize
= 0;
1734 /* objcopy or strip will copy over sh_info, but may not set
1735 cverdefs. The linker will set cverdefs, but sh_info will be
1737 if (this_hdr
->sh_info
== 0)
1738 this_hdr
->sh_info
= elf_tdata (abfd
)->cverdefs
;
1740 BFD_ASSERT (elf_tdata (abfd
)->cverdefs
== 0
1741 || this_hdr
->sh_info
== elf_tdata (abfd
)->cverdefs
);
1743 else if (strcmp (asect
->name
, ".gnu.version_r") == 0)
1745 this_hdr
->sh_type
= SHT_GNU_verneed
;
1746 this_hdr
->sh_entsize
= 0;
1747 /* objcopy or strip will copy over sh_info, but may not set
1748 cverrefs. The linker will set cverrefs, but sh_info will be
1750 if (this_hdr
->sh_info
== 0)
1751 this_hdr
->sh_info
= elf_tdata (abfd
)->cverrefs
;
1753 BFD_ASSERT (elf_tdata (abfd
)->cverrefs
== 0
1754 || this_hdr
->sh_info
== elf_tdata (abfd
)->cverrefs
);
1756 else if ((asect
->flags
& SEC_ALLOC
) != 0
1757 && (asect
->flags
& SEC_LOAD
) != 0)
1758 this_hdr
->sh_type
= SHT_PROGBITS
;
1759 else if ((asect
->flags
& SEC_ALLOC
) != 0
1760 && ((asect
->flags
& SEC_LOAD
) == 0))
1761 this_hdr
->sh_type
= SHT_NOBITS
;
1765 this_hdr
->sh_type
= SHT_PROGBITS
;
1768 if ((asect
->flags
& SEC_ALLOC
) != 0)
1769 this_hdr
->sh_flags
|= SHF_ALLOC
;
1770 if ((asect
->flags
& SEC_READONLY
) == 0)
1771 this_hdr
->sh_flags
|= SHF_WRITE
;
1772 if ((asect
->flags
& SEC_CODE
) != 0)
1773 this_hdr
->sh_flags
|= SHF_EXECINSTR
;
1775 /* Check for processor-specific section types. */
1776 if (bed
->elf_backend_fake_sections
)
1777 (*bed
->elf_backend_fake_sections
) (abfd
, this_hdr
, asect
);
1779 /* If the section has relocs, set up a section header for the
1780 SHT_REL[A] section. If two relocation sections are required for
1781 this section, it is up to the processor-specific back-end to
1782 create the other. */
1783 if ((asect
->flags
& SEC_RELOC
) != 0
1784 && !_bfd_elf_init_reloc_shdr (abfd
,
1785 &elf_section_data (asect
)->rel_hdr
,
1787 elf_section_data (asect
)->use_rela_p
))
1791 /* Assign all ELF section numbers. The dummy first section is handled here
1792 too. The link/info pointers for the standard section types are filled
1793 in here too, while we're at it. */
1796 assign_section_numbers (abfd
)
1799 struct elf_obj_tdata
*t
= elf_tdata (abfd
);
1801 unsigned int section_number
;
1802 Elf_Internal_Shdr
**i_shdrp
;
1806 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
1808 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
1810 d
->this_idx
= section_number
++;
1811 if ((sec
->flags
& SEC_RELOC
) == 0)
1814 d
->rel_idx
= section_number
++;
1817 d
->rel_idx2
= section_number
++;
1822 t
->shstrtab_section
= section_number
++;
1823 elf_elfheader (abfd
)->e_shstrndx
= t
->shstrtab_section
;
1824 t
->shstrtab_hdr
.sh_size
= _bfd_stringtab_size (elf_shstrtab (abfd
));
1826 if (bfd_get_symcount (abfd
) > 0)
1828 t
->symtab_section
= section_number
++;
1829 t
->strtab_section
= section_number
++;
1832 elf_elfheader (abfd
)->e_shnum
= section_number
;
1834 /* Set up the list of section header pointers, in agreement with the
1836 i_shdrp
= ((Elf_Internal_Shdr
**)
1837 bfd_alloc (abfd
, section_number
* sizeof (Elf_Internal_Shdr
*)));
1838 if (i_shdrp
== NULL
)
1841 i_shdrp
[0] = ((Elf_Internal_Shdr
*)
1842 bfd_alloc (abfd
, sizeof (Elf_Internal_Shdr
)));
1843 if (i_shdrp
[0] == NULL
)
1845 bfd_release (abfd
, i_shdrp
);
1848 memset (i_shdrp
[0], 0, sizeof (Elf_Internal_Shdr
));
1850 elf_elfsections (abfd
) = i_shdrp
;
1852 i_shdrp
[t
->shstrtab_section
] = &t
->shstrtab_hdr
;
1853 if (bfd_get_symcount (abfd
) > 0)
1855 i_shdrp
[t
->symtab_section
] = &t
->symtab_hdr
;
1856 i_shdrp
[t
->strtab_section
] = &t
->strtab_hdr
;
1857 t
->symtab_hdr
.sh_link
= t
->strtab_section
;
1859 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
1861 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
1865 i_shdrp
[d
->this_idx
] = &d
->this_hdr
;
1866 if (d
->rel_idx
!= 0)
1867 i_shdrp
[d
->rel_idx
] = &d
->rel_hdr
;
1868 if (d
->rel_idx2
!= 0)
1869 i_shdrp
[d
->rel_idx2
] = d
->rel_hdr2
;
1871 /* Fill in the sh_link and sh_info fields while we're at it. */
1873 /* sh_link of a reloc section is the section index of the symbol
1874 table. sh_info is the section index of the section to which
1875 the relocation entries apply. */
1876 if (d
->rel_idx
!= 0)
1878 d
->rel_hdr
.sh_link
= t
->symtab_section
;
1879 d
->rel_hdr
.sh_info
= d
->this_idx
;
1881 if (d
->rel_idx2
!= 0)
1883 d
->rel_hdr2
->sh_link
= t
->symtab_section
;
1884 d
->rel_hdr2
->sh_info
= d
->this_idx
;
1887 switch (d
->this_hdr
.sh_type
)
1891 /* A reloc section which we are treating as a normal BFD
1892 section. sh_link is the section index of the symbol
1893 table. sh_info is the section index of the section to
1894 which the relocation entries apply. We assume that an
1895 allocated reloc section uses the dynamic symbol table.
1896 FIXME: How can we be sure? */
1897 s
= bfd_get_section_by_name (abfd
, ".dynsym");
1899 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
1901 /* We look up the section the relocs apply to by name. */
1903 if (d
->this_hdr
.sh_type
== SHT_REL
)
1907 s
= bfd_get_section_by_name (abfd
, name
);
1909 d
->this_hdr
.sh_info
= elf_section_data (s
)->this_idx
;
1913 /* We assume that a section named .stab*str is a stabs
1914 string section. We look for a section with the same name
1915 but without the trailing ``str'', and set its sh_link
1916 field to point to this section. */
1917 if (strncmp (sec
->name
, ".stab", sizeof ".stab" - 1) == 0
1918 && strcmp (sec
->name
+ strlen (sec
->name
) - 3, "str") == 0)
1923 len
= strlen (sec
->name
);
1924 alc
= (char *) bfd_malloc (len
- 2);
1927 strncpy (alc
, sec
->name
, len
- 3);
1928 alc
[len
- 3] = '\0';
1929 s
= bfd_get_section_by_name (abfd
, alc
);
1933 elf_section_data (s
)->this_hdr
.sh_link
= d
->this_idx
;
1935 /* This is a .stab section. */
1936 elf_section_data (s
)->this_hdr
.sh_entsize
=
1937 4 + 2 * bfd_get_arch_size (abfd
) / 8;
1944 case SHT_GNU_verneed
:
1945 case SHT_GNU_verdef
:
1946 /* sh_link is the section header index of the string table
1947 used for the dynamic entries, or the symbol table, or the
1949 s
= bfd_get_section_by_name (abfd
, ".dynstr");
1951 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
1955 case SHT_GNU_versym
:
1956 /* sh_link is the section header index of the symbol table
1957 this hash table or version table is for. */
1958 s
= bfd_get_section_by_name (abfd
, ".dynsym");
1960 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
1968 /* Map symbol from it's internal number to the external number, moving
1969 all local symbols to be at the head of the list. */
1972 sym_is_global (abfd
, sym
)
1976 /* If the backend has a special mapping, use it. */
1977 if (get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
1978 return ((*get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
1981 return ((sym
->flags
& (BSF_GLOBAL
| BSF_WEAK
)) != 0
1982 || bfd_is_und_section (bfd_get_section (sym
))
1983 || bfd_is_com_section (bfd_get_section (sym
)));
1987 elf_map_symbols (abfd
)
1990 int symcount
= bfd_get_symcount (abfd
);
1991 asymbol
**syms
= bfd_get_outsymbols (abfd
);
1992 asymbol
**sect_syms
;
1994 int num_globals
= 0;
1995 int num_locals2
= 0;
1996 int num_globals2
= 0;
1998 int num_sections
= 0;
2005 fprintf (stderr
, "elf_map_symbols\n");
2009 /* Add a section symbol for each BFD section. FIXME: Is this really
2011 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2013 if (max_index
< asect
->index
)
2014 max_index
= asect
->index
;
2018 sect_syms
= (asymbol
**) bfd_zalloc (abfd
, max_index
* sizeof (asymbol
*));
2019 if (sect_syms
== NULL
)
2021 elf_section_syms (abfd
) = sect_syms
;
2023 for (idx
= 0; idx
< symcount
; idx
++)
2027 if ((sym
->flags
& BSF_SECTION_SYM
) != 0
2034 if (sec
->owner
!= NULL
)
2036 if (sec
->owner
!= abfd
)
2038 if (sec
->output_offset
!= 0)
2041 sec
= sec
->output_section
;
2043 /* Empty sections in the input files may have had a section
2044 symbol created for them. (See the comment near the end of
2045 _bfd_generic_link_output_symbols in linker.c). If the linker
2046 script discards such sections then we will reach this point.
2047 Since we know that we cannot avoid this case, we detect it
2048 and skip the abort and the assignment to the sect_syms array.
2049 To reproduce this particular case try running the linker
2050 testsuite test ld-scripts/weak.exp for an ELF port that uses
2051 the generic linker. */
2052 if (sec
->owner
== NULL
)
2055 BFD_ASSERT (sec
->owner
== abfd
);
2057 sect_syms
[sec
->index
] = syms
[idx
];
2062 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2064 if (sect_syms
[asect
->index
] != NULL
)
2067 sym
= bfd_make_empty_symbol (abfd
);
2070 sym
->the_bfd
= abfd
;
2071 sym
->name
= asect
->name
;
2073 /* Set the flags to 0 to indicate that this one was newly added. */
2075 sym
->section
= asect
;
2076 sect_syms
[asect
->index
] = sym
;
2080 _("creating section symbol, name = %s, value = 0x%.8lx, index = %d, section = 0x%.8lx\n"),
2081 asect
->name
, (long) asect
->vma
, asect
->index
, (long) asect
);
2085 /* Classify all of the symbols. */
2086 for (idx
= 0; idx
< symcount
; idx
++)
2088 if (!sym_is_global (abfd
, syms
[idx
]))
2093 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2095 if (sect_syms
[asect
->index
] != NULL
2096 && sect_syms
[asect
->index
]->flags
== 0)
2098 sect_syms
[asect
->index
]->flags
= BSF_SECTION_SYM
;
2099 if (!sym_is_global (abfd
, sect_syms
[asect
->index
]))
2103 sect_syms
[asect
->index
]->flags
= 0;
2107 /* Now sort the symbols so the local symbols are first. */
2108 new_syms
= ((asymbol
**)
2110 (num_locals
+ num_globals
) * sizeof (asymbol
*)));
2111 if (new_syms
== NULL
)
2114 for (idx
= 0; idx
< symcount
; idx
++)
2116 asymbol
*sym
= syms
[idx
];
2119 if (!sym_is_global (abfd
, sym
))
2122 i
= num_locals
+ num_globals2
++;
2124 sym
->udata
.i
= i
+ 1;
2126 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2128 if (sect_syms
[asect
->index
] != NULL
2129 && sect_syms
[asect
->index
]->flags
== 0)
2131 asymbol
*sym
= sect_syms
[asect
->index
];
2134 sym
->flags
= BSF_SECTION_SYM
;
2135 if (!sym_is_global (abfd
, sym
))
2138 i
= num_locals
+ num_globals2
++;
2140 sym
->udata
.i
= i
+ 1;
2144 bfd_set_symtab (abfd
, new_syms
, num_locals
+ num_globals
);
2146 elf_num_locals (abfd
) = num_locals
;
2147 elf_num_globals (abfd
) = num_globals
;
2151 /* Align to the maximum file alignment that could be required for any
2152 ELF data structure. */
2154 static INLINE file_ptr align_file_position
PARAMS ((file_ptr
, int));
2155 static INLINE file_ptr
2156 align_file_position (off
, align
)
2160 return (off
+ align
- 1) & ~(align
- 1);
2163 /* Assign a file position to a section, optionally aligning to the
2164 required section alignment. */
2167 _bfd_elf_assign_file_position_for_section (i_shdrp
, offset
, align
)
2168 Elf_Internal_Shdr
*i_shdrp
;
2176 al
= i_shdrp
->sh_addralign
;
2178 offset
= BFD_ALIGN (offset
, al
);
2180 i_shdrp
->sh_offset
= offset
;
2181 if (i_shdrp
->bfd_section
!= NULL
)
2182 i_shdrp
->bfd_section
->filepos
= offset
;
2183 if (i_shdrp
->sh_type
!= SHT_NOBITS
)
2184 offset
+= i_shdrp
->sh_size
;
2188 /* Compute the file positions we are going to put the sections at, and
2189 otherwise prepare to begin writing out the ELF file. If LINK_INFO
2190 is not NULL, this is being called by the ELF backend linker. */
2193 _bfd_elf_compute_section_file_positions (abfd
, link_info
)
2195 struct bfd_link_info
*link_info
;
2197 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2199 struct bfd_strtab_hash
*strtab
;
2200 Elf_Internal_Shdr
*shstrtab_hdr
;
2202 if (abfd
->output_has_begun
)
2205 /* Do any elf backend specific processing first. */
2206 if (bed
->elf_backend_begin_write_processing
)
2207 (*bed
->elf_backend_begin_write_processing
) (abfd
, link_info
);
2209 if (! prep_headers (abfd
))
2212 /* Post process the headers if necessary. */
2213 if (bed
->elf_backend_post_process_headers
)
2214 (*bed
->elf_backend_post_process_headers
) (abfd
, link_info
);
2217 bfd_map_over_sections (abfd
, elf_fake_sections
, &failed
);
2221 if (!assign_section_numbers (abfd
))
2224 /* The backend linker builds symbol table information itself. */
2225 if (link_info
== NULL
&& bfd_get_symcount (abfd
) > 0)
2227 /* Non-zero if doing a relocatable link. */
2228 int relocatable_p
= ! (abfd
->flags
& (EXEC_P
| DYNAMIC
));
2230 if (! swap_out_syms (abfd
, &strtab
, relocatable_p
))
2234 shstrtab_hdr
= &elf_tdata (abfd
)->shstrtab_hdr
;
2235 /* sh_name was set in prep_headers. */
2236 shstrtab_hdr
->sh_type
= SHT_STRTAB
;
2237 shstrtab_hdr
->sh_flags
= 0;
2238 shstrtab_hdr
->sh_addr
= 0;
2239 shstrtab_hdr
->sh_size
= _bfd_stringtab_size (elf_shstrtab (abfd
));
2240 shstrtab_hdr
->sh_entsize
= 0;
2241 shstrtab_hdr
->sh_link
= 0;
2242 shstrtab_hdr
->sh_info
= 0;
2243 /* sh_offset is set in assign_file_positions_except_relocs. */
2244 shstrtab_hdr
->sh_addralign
= 1;
2246 if (!assign_file_positions_except_relocs (abfd
))
2249 if (link_info
== NULL
&& bfd_get_symcount (abfd
) > 0)
2252 Elf_Internal_Shdr
*hdr
;
2254 off
= elf_tdata (abfd
)->next_file_pos
;
2256 hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2257 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
2259 hdr
= &elf_tdata (abfd
)->strtab_hdr
;
2260 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
2262 elf_tdata (abfd
)->next_file_pos
= off
;
2264 /* Now that we know where the .strtab section goes, write it
2266 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
2267 || ! _bfd_stringtab_emit (abfd
, strtab
))
2269 _bfd_stringtab_free (strtab
);
2272 abfd
->output_has_begun
= true;
2277 /* Create a mapping from a set of sections to a program segment. */
2279 static INLINE
struct elf_segment_map
*
2280 make_mapping (abfd
, sections
, from
, to
, phdr
)
2282 asection
**sections
;
2287 struct elf_segment_map
*m
;
2291 m
= ((struct elf_segment_map
*)
2293 (sizeof (struct elf_segment_map
)
2294 + (to
- from
- 1) * sizeof (asection
*))));
2298 m
->p_type
= PT_LOAD
;
2299 for (i
= from
, hdrpp
= sections
+ from
; i
< to
; i
++, hdrpp
++)
2300 m
->sections
[i
- from
] = *hdrpp
;
2301 m
->count
= to
- from
;
2303 if (from
== 0 && phdr
)
2305 /* Include the headers in the first PT_LOAD segment. */
2306 m
->includes_filehdr
= 1;
2307 m
->includes_phdrs
= 1;
2313 /* Set up a mapping from BFD sections to program segments. */
2316 map_sections_to_segments (abfd
)
2319 asection
**sections
= NULL
;
2323 struct elf_segment_map
*mfirst
;
2324 struct elf_segment_map
**pm
;
2325 struct elf_segment_map
*m
;
2327 unsigned int phdr_index
;
2328 bfd_vma maxpagesize
;
2330 boolean phdr_in_segment
= true;
2334 if (elf_tdata (abfd
)->segment_map
!= NULL
)
2337 if (bfd_count_sections (abfd
) == 0)
2340 /* Select the allocated sections, and sort them. */
2342 sections
= (asection
**) bfd_malloc (bfd_count_sections (abfd
)
2343 * sizeof (asection
*));
2344 if (sections
== NULL
)
2348 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
2350 if ((s
->flags
& SEC_ALLOC
) != 0)
2356 BFD_ASSERT (i
<= bfd_count_sections (abfd
));
2359 qsort (sections
, (size_t) count
, sizeof (asection
*), elf_sort_sections
);
2361 /* Build the mapping. */
2366 /* If we have a .interp section, then create a PT_PHDR segment for
2367 the program headers and a PT_INTERP segment for the .interp
2369 s
= bfd_get_section_by_name (abfd
, ".interp");
2370 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
2372 m
= ((struct elf_segment_map
*)
2373 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
)));
2377 m
->p_type
= PT_PHDR
;
2378 /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */
2379 m
->p_flags
= PF_R
| PF_X
;
2380 m
->p_flags_valid
= 1;
2381 m
->includes_phdrs
= 1;
2386 m
= ((struct elf_segment_map
*)
2387 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
)));
2391 m
->p_type
= PT_INTERP
;
2399 /* Look through the sections. We put sections in the same program
2400 segment when the start of the second section can be placed within
2401 a few bytes of the end of the first section. */
2404 maxpagesize
= get_elf_backend_data (abfd
)->maxpagesize
;
2406 dynsec
= bfd_get_section_by_name (abfd
, ".dynamic");
2408 && (dynsec
->flags
& SEC_LOAD
) == 0)
2411 /* Deal with -Ttext or something similar such that the first section
2412 is not adjacent to the program headers. This is an
2413 approximation, since at this point we don't know exactly how many
2414 program headers we will need. */
2417 bfd_size_type phdr_size
;
2419 phdr_size
= elf_tdata (abfd
)->program_header_size
;
2421 phdr_size
= get_elf_backend_data (abfd
)->s
->sizeof_phdr
;
2422 if ((abfd
->flags
& D_PAGED
) == 0
2423 || sections
[0]->lma
< phdr_size
2424 || sections
[0]->lma
% maxpagesize
< phdr_size
% maxpagesize
)
2425 phdr_in_segment
= false;
2428 for (i
= 0, hdrpp
= sections
; i
< count
; i
++, hdrpp
++)
2431 boolean new_segment
;
2435 /* See if this section and the last one will fit in the same
2438 if (last_hdr
== NULL
)
2440 /* If we don't have a segment yet, then we don't need a new
2441 one (we build the last one after this loop). */
2442 new_segment
= false;
2444 else if (last_hdr
->lma
- last_hdr
->vma
!= hdr
->lma
- hdr
->vma
)
2446 /* If this section has a different relation between the
2447 virtual address and the load address, then we need a new
2451 else if (BFD_ALIGN (last_hdr
->lma
+ last_hdr
->_raw_size
, maxpagesize
)
2452 < BFD_ALIGN (hdr
->lma
, maxpagesize
))
2454 /* If putting this section in this segment would force us to
2455 skip a page in the segment, then we need a new segment. */
2458 else if ((last_hdr
->flags
& SEC_LOAD
) == 0
2459 && (hdr
->flags
& SEC_LOAD
) != 0)
2461 /* We don't want to put a loadable section after a
2462 nonloadable section in the same segment. */
2465 else if ((abfd
->flags
& D_PAGED
) == 0)
2467 /* If the file is not demand paged, which means that we
2468 don't require the sections to be correctly aligned in the
2469 file, then there is no other reason for a new segment. */
2470 new_segment
= false;
2473 && (hdr
->flags
& SEC_READONLY
) == 0
2474 && (BFD_ALIGN (last_hdr
->lma
+ last_hdr
->_raw_size
, maxpagesize
)
2477 /* We don't want to put a writable section in a read only
2478 segment, unless they are on the same page in memory
2479 anyhow. We already know that the last section does not
2480 bring us past the current section on the page, so the
2481 only case in which the new section is not on the same
2482 page as the previous section is when the previous section
2483 ends precisely on a page boundary. */
2488 /* Otherwise, we can use the same segment. */
2489 new_segment
= false;
2494 if ((hdr
->flags
& SEC_READONLY
) == 0)
2500 /* We need a new program segment. We must create a new program
2501 header holding all the sections from phdr_index until hdr. */
2503 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_segment
);
2510 if ((hdr
->flags
& SEC_READONLY
) == 0)
2517 phdr_in_segment
= false;
2520 /* Create a final PT_LOAD program segment. */
2521 if (last_hdr
!= NULL
)
2523 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_segment
);
2531 /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */
2534 m
= ((struct elf_segment_map
*)
2535 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
)));
2539 m
->p_type
= PT_DYNAMIC
;
2541 m
->sections
[0] = dynsec
;
2547 /* For each loadable .note section, add a PT_NOTE segment. We don't
2548 use bfd_get_section_by_name, because if we link together
2549 nonloadable .note sections and loadable .note sections, we will
2550 generate two .note sections in the output file. FIXME: Using
2551 names for section types is bogus anyhow. */
2552 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
2554 if ((s
->flags
& SEC_LOAD
) != 0
2555 && strncmp (s
->name
, ".note", 5) == 0)
2557 m
= ((struct elf_segment_map
*)
2558 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
)));
2562 m
->p_type
= PT_NOTE
;
2574 elf_tdata (abfd
)->segment_map
= mfirst
;
2578 if (sections
!= NULL
)
2583 /* Sort sections by address. */
2586 elf_sort_sections (arg1
, arg2
)
2590 const asection
*sec1
= *(const asection
**) arg1
;
2591 const asection
*sec2
= *(const asection
**) arg2
;
2593 /* Sort by LMA first, since this is the address used to
2594 place the section into a segment. */
2595 if (sec1
->lma
< sec2
->lma
)
2597 else if (sec1
->lma
> sec2
->lma
)
2600 /* Then sort by VMA. Normally the LMA and the VMA will be
2601 the same, and this will do nothing. */
2602 if (sec1
->vma
< sec2
->vma
)
2604 else if (sec1
->vma
> sec2
->vma
)
2607 /* Put !SEC_LOAD sections after SEC_LOAD ones. */
2609 #define TOEND(x) (((x)->flags & SEC_LOAD) == 0)
2614 return sec1
->target_index
- sec2
->target_index
;
2624 /* Sort by size, to put zero sized sections before others at the
2627 if (sec1
->_raw_size
< sec2
->_raw_size
)
2629 if (sec1
->_raw_size
> sec2
->_raw_size
)
2632 return sec1
->target_index
- sec2
->target_index
;
2635 /* Assign file positions to the sections based on the mapping from
2636 sections to segments. This function also sets up some fields in
2637 the file header, and writes out the program headers. */
2640 assign_file_positions_for_segments (abfd
)
2643 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2645 struct elf_segment_map
*m
;
2647 Elf_Internal_Phdr
*phdrs
;
2649 bfd_vma filehdr_vaddr
, filehdr_paddr
;
2650 bfd_vma phdrs_vaddr
, phdrs_paddr
;
2651 Elf_Internal_Phdr
*p
;
2653 if (elf_tdata (abfd
)->segment_map
== NULL
)
2655 if (! map_sections_to_segments (abfd
))
2659 if (bed
->elf_backend_modify_segment_map
)
2661 if (! (*bed
->elf_backend_modify_segment_map
) (abfd
))
2666 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
2669 elf_elfheader (abfd
)->e_phoff
= bed
->s
->sizeof_ehdr
;
2670 elf_elfheader (abfd
)->e_phentsize
= bed
->s
->sizeof_phdr
;
2671 elf_elfheader (abfd
)->e_phnum
= count
;
2676 /* If we already counted the number of program segments, make sure
2677 that we allocated enough space. This happens when SIZEOF_HEADERS
2678 is used in a linker script. */
2679 alloc
= elf_tdata (abfd
)->program_header_size
/ bed
->s
->sizeof_phdr
;
2680 if (alloc
!= 0 && count
> alloc
)
2682 ((*_bfd_error_handler
)
2683 (_("%s: Not enough room for program headers (allocated %u, need %u)"),
2684 bfd_get_filename (abfd
), alloc
, count
));
2685 bfd_set_error (bfd_error_bad_value
);
2692 phdrs
= ((Elf_Internal_Phdr
*)
2693 bfd_alloc (abfd
, alloc
* sizeof (Elf_Internal_Phdr
)));
2697 off
= bed
->s
->sizeof_ehdr
;
2698 off
+= alloc
* bed
->s
->sizeof_phdr
;
2705 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
2712 /* If elf_segment_map is not from map_sections_to_segments, the
2713 sections may not be correctly ordered. */
2715 qsort (m
->sections
, (size_t) m
->count
, sizeof (asection
*),
2718 p
->p_type
= m
->p_type
;
2719 p
->p_flags
= m
->p_flags
;
2721 if (p
->p_type
== PT_LOAD
2723 && (m
->sections
[0]->flags
& SEC_ALLOC
) != 0)
2725 if ((abfd
->flags
& D_PAGED
) != 0)
2726 off
+= (m
->sections
[0]->vma
- off
) % bed
->maxpagesize
;
2729 bfd_size_type align
;
2732 for (i
= 0, secpp
= m
->sections
; i
< m
->count
; i
++, secpp
++)
2734 bfd_size_type secalign
;
2736 secalign
= bfd_get_section_alignment (abfd
, *secpp
);
2737 if (secalign
> align
)
2741 off
+= (m
->sections
[0]->vma
- off
) % (1 << align
);
2748 p
->p_vaddr
= m
->sections
[0]->vma
;
2750 if (m
->p_paddr_valid
)
2751 p
->p_paddr
= m
->p_paddr
;
2752 else if (m
->count
== 0)
2755 p
->p_paddr
= m
->sections
[0]->lma
;
2757 if (p
->p_type
== PT_LOAD
2758 && (abfd
->flags
& D_PAGED
) != 0)
2759 p
->p_align
= bed
->maxpagesize
;
2760 else if (m
->count
== 0)
2761 p
->p_align
= bed
->s
->file_align
;
2769 if (m
->includes_filehdr
)
2771 if (! m
->p_flags_valid
)
2774 p
->p_filesz
= bed
->s
->sizeof_ehdr
;
2775 p
->p_memsz
= bed
->s
->sizeof_ehdr
;
2778 BFD_ASSERT (p
->p_type
== PT_LOAD
);
2780 if (p
->p_vaddr
< (bfd_vma
) off
)
2782 _bfd_error_handler (_("%s: Not enough room for program headers, try linking with -N"),
2783 bfd_get_filename (abfd
));
2784 bfd_set_error (bfd_error_bad_value
);
2789 if (! m
->p_paddr_valid
)
2792 if (p
->p_type
== PT_LOAD
)
2794 filehdr_vaddr
= p
->p_vaddr
;
2795 filehdr_paddr
= p
->p_paddr
;
2799 if (m
->includes_phdrs
)
2801 if (! m
->p_flags_valid
)
2804 if (m
->includes_filehdr
)
2806 if (p
->p_type
== PT_LOAD
)
2808 phdrs_vaddr
= p
->p_vaddr
+ bed
->s
->sizeof_ehdr
;
2809 phdrs_paddr
= p
->p_paddr
+ bed
->s
->sizeof_ehdr
;
2814 p
->p_offset
= bed
->s
->sizeof_ehdr
;
2818 BFD_ASSERT (p
->p_type
== PT_LOAD
);
2819 p
->p_vaddr
-= off
- p
->p_offset
;
2820 if (! m
->p_paddr_valid
)
2821 p
->p_paddr
-= off
- p
->p_offset
;
2824 if (p
->p_type
== PT_LOAD
)
2826 phdrs_vaddr
= p
->p_vaddr
;
2827 phdrs_paddr
= p
->p_paddr
;
2830 phdrs_vaddr
= bed
->maxpagesize
+ bed
->s
->sizeof_ehdr
;
2833 p
->p_filesz
+= alloc
* bed
->s
->sizeof_phdr
;
2834 p
->p_memsz
+= alloc
* bed
->s
->sizeof_phdr
;
2837 if (p
->p_type
== PT_LOAD
2838 || (p
->p_type
== PT_NOTE
&& bfd_get_format (abfd
) == bfd_core
))
2840 if (! m
->includes_filehdr
&& ! m
->includes_phdrs
)
2846 adjust
= off
- (p
->p_offset
+ p
->p_filesz
);
2847 p
->p_filesz
+= adjust
;
2848 p
->p_memsz
+= adjust
;
2854 for (i
= 0, secpp
= m
->sections
; i
< m
->count
; i
++, secpp
++)
2858 bfd_size_type align
;
2862 align
= 1 << bfd_get_section_alignment (abfd
, sec
);
2864 /* The section may have artificial alignment forced by a
2865 link script. Notice this case by the gap between the
2866 cumulative phdr vma and the section's vma. */
2867 if (p
->p_vaddr
+ p
->p_memsz
< sec
->vma
)
2869 bfd_vma adjust
= sec
->vma
- (p
->p_vaddr
+ p
->p_memsz
);
2871 p
->p_memsz
+= adjust
;
2874 if ((flags
& SEC_LOAD
) != 0)
2875 p
->p_filesz
+= adjust
;
2878 if (p
->p_type
== PT_LOAD
)
2880 bfd_signed_vma adjust
;
2882 if ((flags
& SEC_LOAD
) != 0)
2884 adjust
= sec
->lma
- (p
->p_paddr
+ p
->p_memsz
);
2888 else if ((flags
& SEC_ALLOC
) != 0)
2890 /* The section VMA must equal the file position
2891 modulo the page size. FIXME: I'm not sure if
2892 this adjustment is really necessary. We used to
2893 not have the SEC_LOAD case just above, and then
2894 this was necessary, but now I'm not sure. */
2895 if ((abfd
->flags
& D_PAGED
) != 0)
2896 adjust
= (sec
->vma
- voff
) % bed
->maxpagesize
;
2898 adjust
= (sec
->vma
- voff
) % align
;
2907 (* _bfd_error_handler
)
2908 (_("Error: First section in segment (%s) starts at 0x%x"),
2909 bfd_section_name (abfd
, sec
), sec
->lma
);
2910 (* _bfd_error_handler
)
2911 (_(" whereas segment starts at 0x%x"),
2916 p
->p_memsz
+= adjust
;
2919 if ((flags
& SEC_LOAD
) != 0)
2920 p
->p_filesz
+= adjust
;
2925 /* We check SEC_HAS_CONTENTS here because if NOLOAD is
2926 used in a linker script we may have a section with
2927 SEC_LOAD clear but which is supposed to have
2929 if ((flags
& SEC_LOAD
) != 0
2930 || (flags
& SEC_HAS_CONTENTS
) != 0)
2931 off
+= sec
->_raw_size
;
2933 if ((flags
& SEC_ALLOC
) != 0)
2934 voff
+= sec
->_raw_size
;
2937 if (p
->p_type
== PT_NOTE
&& bfd_get_format (abfd
) == bfd_core
)
2939 /* The actual "note" segment has i == 0.
2940 This is the one that actually contains everything. */
2944 p
->p_filesz
= sec
->_raw_size
;
2945 off
+= sec
->_raw_size
;
2950 /* Fake sections -- don't need to be written. */
2953 flags
= sec
->flags
= 0;
2960 p
->p_memsz
+= sec
->_raw_size
;
2962 if ((flags
& SEC_LOAD
) != 0)
2963 p
->p_filesz
+= sec
->_raw_size
;
2965 if (align
> p
->p_align
2966 && (p
->p_type
!= PT_LOAD
|| (abfd
->flags
& D_PAGED
) == 0))
2970 if (! m
->p_flags_valid
)
2973 if ((flags
& SEC_CODE
) != 0)
2975 if ((flags
& SEC_READONLY
) == 0)
2981 /* Now that we have set the section file positions, we can set up
2982 the file positions for the non PT_LOAD segments. */
2983 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
2987 if (p
->p_type
!= PT_LOAD
&& m
->count
> 0)
2989 BFD_ASSERT (! m
->includes_filehdr
&& ! m
->includes_phdrs
);
2990 p
->p_offset
= m
->sections
[0]->filepos
;
2994 if (m
->includes_filehdr
)
2996 p
->p_vaddr
= filehdr_vaddr
;
2997 if (! m
->p_paddr_valid
)
2998 p
->p_paddr
= filehdr_paddr
;
3000 else if (m
->includes_phdrs
)
3002 p
->p_vaddr
= phdrs_vaddr
;
3003 if (! m
->p_paddr_valid
)
3004 p
->p_paddr
= phdrs_paddr
;
3009 /* Clear out any program headers we allocated but did not use. */
3010 for (; count
< alloc
; count
++, p
++)
3012 memset (p
, 0, sizeof *p
);
3013 p
->p_type
= PT_NULL
;
3016 elf_tdata (abfd
)->phdr
= phdrs
;
3018 elf_tdata (abfd
)->next_file_pos
= off
;
3020 /* Write out the program headers. */
3021 if (bfd_seek (abfd
, bed
->s
->sizeof_ehdr
, SEEK_SET
) != 0
3022 || bed
->s
->write_out_phdrs (abfd
, phdrs
, alloc
) != 0)
3028 /* Get the size of the program header.
3030 If this is called by the linker before any of the section VMA's are set, it
3031 can't calculate the correct value for a strange memory layout. This only
3032 happens when SIZEOF_HEADERS is used in a linker script. In this case,
3033 SORTED_HDRS is NULL and we assume the normal scenario of one text and one
3034 data segment (exclusive of .interp and .dynamic).
3036 ??? User written scripts must either not use SIZEOF_HEADERS, or assume there
3037 will be two segments. */
3039 static bfd_size_type
3040 get_program_header_size (abfd
)
3045 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3047 /* We can't return a different result each time we're called. */
3048 if (elf_tdata (abfd
)->program_header_size
!= 0)
3049 return elf_tdata (abfd
)->program_header_size
;
3051 if (elf_tdata (abfd
)->segment_map
!= NULL
)
3053 struct elf_segment_map
*m
;
3056 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
3058 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
3059 return elf_tdata (abfd
)->program_header_size
;
3062 /* Assume we will need exactly two PT_LOAD segments: one for text
3063 and one for data. */
3066 s
= bfd_get_section_by_name (abfd
, ".interp");
3067 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
3069 /* If we have a loadable interpreter section, we need a
3070 PT_INTERP segment. In this case, assume we also need a
3071 PT_PHDR segment, although that may not be true for all
3076 if (bfd_get_section_by_name (abfd
, ".dynamic") != NULL
)
3078 /* We need a PT_DYNAMIC segment. */
3082 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
3084 if ((s
->flags
& SEC_LOAD
) != 0
3085 && strncmp (s
->name
, ".note", 5) == 0)
3087 /* We need a PT_NOTE segment. */
3092 /* Let the backend count up any program headers it might need. */
3093 if (bed
->elf_backend_additional_program_headers
)
3097 a
= (*bed
->elf_backend_additional_program_headers
) (abfd
);
3103 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
3104 return elf_tdata (abfd
)->program_header_size
;
3107 /* Work out the file positions of all the sections. This is called by
3108 _bfd_elf_compute_section_file_positions. All the section sizes and
3109 VMAs must be known before this is called.
3111 We do not consider reloc sections at this point, unless they form
3112 part of the loadable image. Reloc sections are assigned file
3113 positions in assign_file_positions_for_relocs, which is called by
3114 write_object_contents and final_link.
3116 We also don't set the positions of the .symtab and .strtab here. */
3119 assign_file_positions_except_relocs (abfd
)
3122 struct elf_obj_tdata
* const tdata
= elf_tdata (abfd
);
3123 Elf_Internal_Ehdr
* const i_ehdrp
= elf_elfheader (abfd
);
3124 Elf_Internal_Shdr
** const i_shdrpp
= elf_elfsections (abfd
);
3126 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3128 if ((abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0
3129 && bfd_get_format (abfd
) != bfd_core
)
3131 Elf_Internal_Shdr
**hdrpp
;
3134 /* Start after the ELF header. */
3135 off
= i_ehdrp
->e_ehsize
;
3137 /* We are not creating an executable, which means that we are
3138 not creating a program header, and that the actual order of
3139 the sections in the file is unimportant. */
3140 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< i_ehdrp
->e_shnum
; i
++, hdrpp
++)
3142 Elf_Internal_Shdr
*hdr
;
3145 if (hdr
->sh_type
== SHT_REL
|| hdr
->sh_type
== SHT_RELA
)
3147 hdr
->sh_offset
= -1;
3150 if (i
== tdata
->symtab_section
3151 || i
== tdata
->strtab_section
)
3153 hdr
->sh_offset
= -1;
3157 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
3163 Elf_Internal_Shdr
**hdrpp
;
3165 /* Assign file positions for the loaded sections based on the
3166 assignment of sections to segments. */
3167 if (! assign_file_positions_for_segments (abfd
))
3170 /* Assign file positions for the other sections. */
3172 off
= elf_tdata (abfd
)->next_file_pos
;
3173 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< i_ehdrp
->e_shnum
; i
++, hdrpp
++)
3175 Elf_Internal_Shdr
*hdr
;
3178 if (hdr
->bfd_section
!= NULL
3179 && hdr
->bfd_section
->filepos
!= 0)
3180 hdr
->sh_offset
= hdr
->bfd_section
->filepos
;
3181 else if ((hdr
->sh_flags
& SHF_ALLOC
) != 0)
3183 ((*_bfd_error_handler
)
3184 (_("%s: warning: allocated section `%s' not in segment"),
3185 bfd_get_filename (abfd
),
3186 (hdr
->bfd_section
== NULL
3188 : hdr
->bfd_section
->name
)));
3189 if ((abfd
->flags
& D_PAGED
) != 0)
3190 off
+= (hdr
->sh_addr
- off
) % bed
->maxpagesize
;
3192 off
+= (hdr
->sh_addr
- off
) % hdr
->sh_addralign
;
3193 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
,
3196 else if (hdr
->sh_type
== SHT_REL
3197 || hdr
->sh_type
== SHT_RELA
3198 || hdr
== i_shdrpp
[tdata
->symtab_section
]
3199 || hdr
== i_shdrpp
[tdata
->strtab_section
])
3200 hdr
->sh_offset
= -1;
3202 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
3206 /* Place the section headers. */
3207 off
= align_file_position (off
, bed
->s
->file_align
);
3208 i_ehdrp
->e_shoff
= off
;
3209 off
+= i_ehdrp
->e_shnum
* i_ehdrp
->e_shentsize
;
3211 elf_tdata (abfd
)->next_file_pos
= off
;
3220 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
3221 Elf_Internal_Phdr
*i_phdrp
= 0; /* Program header table, internal form */
3222 Elf_Internal_Shdr
**i_shdrp
; /* Section header table, internal form */
3224 struct bfd_strtab_hash
*shstrtab
;
3225 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3227 i_ehdrp
= elf_elfheader (abfd
);
3228 i_shdrp
= elf_elfsections (abfd
);
3230 shstrtab
= _bfd_elf_stringtab_init ();
3231 if (shstrtab
== NULL
)
3234 elf_shstrtab (abfd
) = shstrtab
;
3236 i_ehdrp
->e_ident
[EI_MAG0
] = ELFMAG0
;
3237 i_ehdrp
->e_ident
[EI_MAG1
] = ELFMAG1
;
3238 i_ehdrp
->e_ident
[EI_MAG2
] = ELFMAG2
;
3239 i_ehdrp
->e_ident
[EI_MAG3
] = ELFMAG3
;
3241 i_ehdrp
->e_ident
[EI_CLASS
] = bed
->s
->elfclass
;
3242 i_ehdrp
->e_ident
[EI_DATA
] =
3243 bfd_big_endian (abfd
) ? ELFDATA2MSB
: ELFDATA2LSB
;
3244 i_ehdrp
->e_ident
[EI_VERSION
] = bed
->s
->ev_current
;
3246 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_NONE
;
3247 i_ehdrp
->e_ident
[EI_ABIVERSION
] = 0;
3249 for (count
= EI_PAD
; count
< EI_NIDENT
; count
++)
3250 i_ehdrp
->e_ident
[count
] = 0;
3252 if ((abfd
->flags
& DYNAMIC
) != 0)
3253 i_ehdrp
->e_type
= ET_DYN
;
3254 else if ((abfd
->flags
& EXEC_P
) != 0)
3255 i_ehdrp
->e_type
= ET_EXEC
;
3256 else if (bfd_get_format (abfd
) == bfd_core
)
3257 i_ehdrp
->e_type
= ET_CORE
;
3259 i_ehdrp
->e_type
= ET_REL
;
3261 switch (bfd_get_arch (abfd
))
3263 case bfd_arch_unknown
:
3264 i_ehdrp
->e_machine
= EM_NONE
;
3266 case bfd_arch_sparc
:
3267 if (bfd_get_arch_size (abfd
) == 64)
3268 i_ehdrp
->e_machine
= EM_SPARCV9
;
3270 i_ehdrp
->e_machine
= EM_SPARC
;
3273 i_ehdrp
->e_machine
= EM_S370
;
3276 i_ehdrp
->e_machine
= EM_386
;
3279 i_ehdrp
->e_machine
= EM_IA_64
;
3281 case bfd_arch_m68hc11
:
3282 i_ehdrp
->e_machine
= EM_68HC11
;
3284 case bfd_arch_m68hc12
:
3285 i_ehdrp
->e_machine
= EM_68HC12
;
3288 i_ehdrp
->e_machine
= EM_68K
;
3291 i_ehdrp
->e_machine
= EM_88K
;
3294 i_ehdrp
->e_machine
= EM_860
;
3297 i_ehdrp
->e_machine
= EM_960
;
3299 case bfd_arch_mips
: /* MIPS Rxxxx */
3300 i_ehdrp
->e_machine
= EM_MIPS
; /* only MIPS R3000 */
3303 i_ehdrp
->e_machine
= EM_PARISC
;
3305 case bfd_arch_powerpc
:
3306 i_ehdrp
->e_machine
= EM_PPC
;
3308 case bfd_arch_alpha
:
3309 i_ehdrp
->e_machine
= EM_ALPHA
;
3312 i_ehdrp
->e_machine
= EM_SH
;
3315 i_ehdrp
->e_machine
= EM_CYGNUS_D10V
;
3318 i_ehdrp
->e_machine
= EM_CYGNUS_D30V
;
3321 i_ehdrp
->e_machine
= EM_CYGNUS_FR30
;
3323 case bfd_arch_mcore
:
3324 i_ehdrp
->e_machine
= EM_MCORE
;
3327 i_ehdrp
->e_machine
= EM_AVR
;
3330 switch (bfd_get_mach (abfd
))
3333 case 0: i_ehdrp
->e_machine
= EM_CYGNUS_V850
; break;
3337 i_ehdrp
->e_machine
= EM_CYGNUS_ARC
;
3340 i_ehdrp
->e_machine
= EM_ARM
;
3343 i_ehdrp
->e_machine
= EM_CYGNUS_M32R
;
3345 case bfd_arch_mn10200
:
3346 i_ehdrp
->e_machine
= EM_CYGNUS_MN10200
;
3348 case bfd_arch_mn10300
:
3349 i_ehdrp
->e_machine
= EM_CYGNUS_MN10300
;
3352 i_ehdrp
->e_machine
= EM_PJ
;
3354 /* also note that EM_M32, AT&T WE32100 is unknown to bfd */
3356 i_ehdrp
->e_machine
= EM_NONE
;
3358 i_ehdrp
->e_version
= bed
->s
->ev_current
;
3359 i_ehdrp
->e_ehsize
= bed
->s
->sizeof_ehdr
;
3361 /* no program header, for now. */
3362 i_ehdrp
->e_phoff
= 0;
3363 i_ehdrp
->e_phentsize
= 0;
3364 i_ehdrp
->e_phnum
= 0;
3366 /* each bfd section is section header entry */
3367 i_ehdrp
->e_entry
= bfd_get_start_address (abfd
);
3368 i_ehdrp
->e_shentsize
= bed
->s
->sizeof_shdr
;
3370 /* if we're building an executable, we'll need a program header table */
3371 if (abfd
->flags
& EXEC_P
)
3373 /* it all happens later */
3375 i_ehdrp
->e_phentsize
= sizeof (Elf_External_Phdr
);
3377 /* elf_build_phdrs() returns a (NULL-terminated) array of
3378 Elf_Internal_Phdrs */
3379 i_phdrp
= elf_build_phdrs (abfd
, i_ehdrp
, i_shdrp
, &i_ehdrp
->e_phnum
);
3380 i_ehdrp
->e_phoff
= outbase
;
3381 outbase
+= i_ehdrp
->e_phentsize
* i_ehdrp
->e_phnum
;
3386 i_ehdrp
->e_phentsize
= 0;
3388 i_ehdrp
->e_phoff
= 0;
3391 elf_tdata (abfd
)->symtab_hdr
.sh_name
=
3392 (unsigned int) _bfd_stringtab_add (shstrtab
, ".symtab", true, false);
3393 elf_tdata (abfd
)->strtab_hdr
.sh_name
=
3394 (unsigned int) _bfd_stringtab_add (shstrtab
, ".strtab", true, false);
3395 elf_tdata (abfd
)->shstrtab_hdr
.sh_name
=
3396 (unsigned int) _bfd_stringtab_add (shstrtab
, ".shstrtab", true, false);
3397 if (elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
3398 || elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
3399 || elf_tdata (abfd
)->shstrtab_hdr
.sh_name
== (unsigned int) -1)
3405 /* Assign file positions for all the reloc sections which are not part
3406 of the loadable file image. */
3409 _bfd_elf_assign_file_positions_for_relocs (abfd
)
3414 Elf_Internal_Shdr
**shdrpp
;
3416 off
= elf_tdata (abfd
)->next_file_pos
;
3418 for (i
= 1, shdrpp
= elf_elfsections (abfd
) + 1;
3419 i
< elf_elfheader (abfd
)->e_shnum
;
3422 Elf_Internal_Shdr
*shdrp
;
3425 if ((shdrp
->sh_type
== SHT_REL
|| shdrp
->sh_type
== SHT_RELA
)
3426 && shdrp
->sh_offset
== -1)
3427 off
= _bfd_elf_assign_file_position_for_section (shdrp
, off
, true);
3430 elf_tdata (abfd
)->next_file_pos
= off
;
3434 _bfd_elf_write_object_contents (abfd
)
3437 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3438 Elf_Internal_Ehdr
*i_ehdrp
;
3439 Elf_Internal_Shdr
**i_shdrp
;
3443 if (! abfd
->output_has_begun
3444 && ! _bfd_elf_compute_section_file_positions
3445 (abfd
, (struct bfd_link_info
*) NULL
))
3448 i_shdrp
= elf_elfsections (abfd
);
3449 i_ehdrp
= elf_elfheader (abfd
);
3452 bfd_map_over_sections (abfd
, bed
->s
->write_relocs
, &failed
);
3456 _bfd_elf_assign_file_positions_for_relocs (abfd
);
3458 /* After writing the headers, we need to write the sections too... */
3459 for (count
= 1; count
< i_ehdrp
->e_shnum
; count
++)
3461 if (bed
->elf_backend_section_processing
)
3462 (*bed
->elf_backend_section_processing
) (abfd
, i_shdrp
[count
]);
3463 if (i_shdrp
[count
]->contents
)
3465 if (bfd_seek (abfd
, i_shdrp
[count
]->sh_offset
, SEEK_SET
) != 0
3466 || (bfd_write (i_shdrp
[count
]->contents
, i_shdrp
[count
]->sh_size
,
3468 != i_shdrp
[count
]->sh_size
))
3473 /* Write out the section header names. */
3474 if (bfd_seek (abfd
, elf_tdata (abfd
)->shstrtab_hdr
.sh_offset
, SEEK_SET
) != 0
3475 || ! _bfd_stringtab_emit (abfd
, elf_shstrtab (abfd
)))
3478 if (bed
->elf_backend_final_write_processing
)
3479 (*bed
->elf_backend_final_write_processing
) (abfd
,
3480 elf_tdata (abfd
)->linker
);
3482 return bed
->s
->write_shdrs_and_ehdr (abfd
);
3486 _bfd_elf_write_corefile_contents (abfd
)
3489 /* Hopefully this can be done just like an object file. */
3490 return _bfd_elf_write_object_contents (abfd
);
3492 /* given a section, search the header to find them... */
3494 _bfd_elf_section_from_bfd_section (abfd
, asect
)
3498 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3499 Elf_Internal_Shdr
**i_shdrp
= elf_elfsections (abfd
);
3501 Elf_Internal_Shdr
*hdr
;
3502 int maxindex
= elf_elfheader (abfd
)->e_shnum
;
3504 for (index
= 0; index
< maxindex
; index
++)
3506 hdr
= i_shdrp
[index
];
3507 if (hdr
->bfd_section
== asect
)
3511 if (bed
->elf_backend_section_from_bfd_section
)
3513 for (index
= 0; index
< maxindex
; index
++)
3517 hdr
= i_shdrp
[index
];
3519 if ((*bed
->elf_backend_section_from_bfd_section
)
3520 (abfd
, hdr
, asect
, &retval
))
3525 if (bfd_is_abs_section (asect
))
3527 if (bfd_is_com_section (asect
))
3529 if (bfd_is_und_section (asect
))
3532 bfd_set_error (bfd_error_nonrepresentable_section
);
3537 /* Given a BFD symbol, return the index in the ELF symbol table, or -1
3541 _bfd_elf_symbol_from_bfd_symbol (abfd
, asym_ptr_ptr
)
3543 asymbol
**asym_ptr_ptr
;
3545 asymbol
*asym_ptr
= *asym_ptr_ptr
;
3547 flagword flags
= asym_ptr
->flags
;
3549 /* When gas creates relocations against local labels, it creates its
3550 own symbol for the section, but does put the symbol into the
3551 symbol chain, so udata is 0. When the linker is generating
3552 relocatable output, this section symbol may be for one of the
3553 input sections rather than the output section. */
3554 if (asym_ptr
->udata
.i
== 0
3555 && (flags
& BSF_SECTION_SYM
)
3556 && asym_ptr
->section
)
3560 if (asym_ptr
->section
->output_section
!= NULL
)
3561 indx
= asym_ptr
->section
->output_section
->index
;
3563 indx
= asym_ptr
->section
->index
;
3564 if (elf_section_syms (abfd
)[indx
])
3565 asym_ptr
->udata
.i
= elf_section_syms (abfd
)[indx
]->udata
.i
;
3568 idx
= asym_ptr
->udata
.i
;
3572 /* This case can occur when using --strip-symbol on a symbol
3573 which is used in a relocation entry. */
3574 (*_bfd_error_handler
)
3575 (_("%s: symbol `%s' required but not present"),
3576 bfd_get_filename (abfd
), bfd_asymbol_name (asym_ptr
));
3577 bfd_set_error (bfd_error_no_symbols
);
3584 _("elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n"),
3585 (long) asym_ptr
, asym_ptr
->name
, idx
, flags
,
3586 elf_symbol_flags (flags
));
3594 /* Copy private BFD data. This copies any program header information. */
3597 copy_private_bfd_data (ibfd
, obfd
)
3601 Elf_Internal_Ehdr
*iehdr
;
3602 struct elf_segment_map
*mfirst
;
3603 struct elf_segment_map
**pm
;
3604 struct elf_segment_map
*m
;
3605 Elf_Internal_Phdr
*p
;
3607 unsigned int num_segments
;
3608 boolean phdr_included
= false;
3610 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
3611 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
3614 if (elf_tdata (ibfd
)->phdr
== NULL
)
3617 iehdr
= elf_elfheader (ibfd
);
3622 num_segments
= elf_elfheader (ibfd
)->e_phnum
;
3624 #define IS_CONTAINED_BY(addr, len, bottom, phdr) \
3625 ((addr) >= (bottom) \
3626 && ( ((addr) + (len)) <= ((bottom) + (phdr)->p_memsz) \
3627 || ((addr) + (len)) <= ((bottom) + (phdr)->p_filesz)))
3629 /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */
3631 #define IS_COREFILE_NOTE(p, s) \
3632 (p->p_type == PT_NOTE \
3633 && bfd_get_format (ibfd) == bfd_core \
3634 && s->vma == 0 && s->lma == 0 \
3635 && (bfd_vma) s->filepos >= p->p_offset \
3636 && (bfd_vma) s->filepos + s->_raw_size \
3637 <= p->p_offset + p->p_filesz)
3639 /* The complicated case when p_vaddr is 0 is to handle the Solaris
3640 linker, which generates a PT_INTERP section with p_vaddr and
3641 p_memsz set to 0. */
3643 #define IS_SOLARIS_PT_INTERP(p, s) \
3645 && p->p_filesz > 0 \
3646 && (s->flags & SEC_HAS_CONTENTS) != 0 \
3647 && s->_raw_size > 0 \
3648 && (bfd_vma) s->filepos >= p->p_offset \
3649 && ((bfd_vma) s->filepos + s->_raw_size \
3650 <= p->p_offset + p->p_filesz))
3652 /* Scan through the segments specified in the program header
3653 of the input BFD. */
3654 for (i
= 0, p
= elf_tdata (ibfd
)->phdr
; i
< num_segments
; i
++, p
++)
3658 asection
**sections
;
3661 bfd_vma matching_lma
;
3662 bfd_vma suggested_lma
;
3665 /* For each section in the input BFD, decide if it should be
3666 included in the current segment. A section will be included
3667 if it is within the address space of the segment, and it is
3668 an allocated segment, and there is an output section
3669 associated with it. */
3671 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
3672 if (s
->output_section
!= NULL
)
3674 if ((IS_CONTAINED_BY (s
->vma
, s
->_raw_size
, p
->p_vaddr
, p
)
3675 || IS_SOLARIS_PT_INTERP (p
, s
))
3676 && (s
->flags
& SEC_ALLOC
) != 0)
3678 else if (IS_COREFILE_NOTE (p
, s
))
3682 /* Allocate a segment map big enough to contain all of the
3683 sections we have selected. */
3684 m
= ((struct elf_segment_map
*)
3686 (sizeof (struct elf_segment_map
)
3687 + ((size_t) csecs
- 1) * sizeof (asection
*))));
3691 /* Initialise the fields of the segment map. Default to
3692 using the physical address of the segment in the input BFD. */
3694 m
->p_type
= p
->p_type
;
3695 m
->p_flags
= p
->p_flags
;
3696 m
->p_flags_valid
= 1;
3697 m
->p_paddr
= p
->p_paddr
;
3698 m
->p_paddr_valid
= 1;
3700 /* Determine if this segment contains the ELF file header
3701 and if it contains the program headers themselves. */
3702 m
->includes_filehdr
= (p
->p_offset
== 0
3703 && p
->p_filesz
>= iehdr
->e_ehsize
);
3705 m
->includes_phdrs
= 0;
3707 if (! phdr_included
|| p
->p_type
!= PT_LOAD
)
3710 (p
->p_offset
<= (bfd_vma
) iehdr
->e_phoff
3711 && (p
->p_offset
+ p
->p_filesz
3712 >= ((bfd_vma
) iehdr
->e_phoff
3713 + iehdr
->e_phnum
* iehdr
->e_phentsize
)));
3714 if (p
->p_type
== PT_LOAD
&& m
->includes_phdrs
)
3715 phdr_included
= true;
3720 /* Special segments, such as the PT_PHDR segment, may contain
3721 no sections, but ordinary, loadable segments should contain
3724 if (p
->p_type
== PT_LOAD
)
3726 (_("%s: warning: Empty loadable segment detected\n"),
3727 bfd_get_filename (ibfd
));
3736 /* Now scan the sections in the input BFD again and attempt
3737 to add their corresponding output sections to the segment map.
3738 The problem here is how to handle an output section which has
3739 been moved (ie had its LMA changed). There are four possibilities:
3741 1. None of the sections have been moved.
3742 In this case we can continue to use the segment LMA from the
3745 2. All of the sections have been moved by the same amount.
3746 In this case we can change the segment's LMA to match the LMA
3747 of the first section.
3749 3. Some of the sections have been moved, others have not.
3750 In this case those sections which have not been moved can be
3751 placed in the current segment which will have to have its size,
3752 and possibly its LMA changed, and a new segment or segments will
3753 have to be created to contain the other sections.
3755 4. The sections have been moved, but not be the same amount.
3756 In this case we can change the segment's LMA to match the LMA
3757 of the first section and we will have to create a new segment
3758 or segments to contain the other sections.
3760 In order to save time, we allocate an array to hold the section
3761 pointers that we are interested in. As these sections get assigned
3762 to a segment, they are removed from this array. */
3764 sections
= (asection
**) bfd_malloc (sizeof (asection
*) * csecs
);
3765 if (sections
== NULL
)
3768 /* Step One: Scan for segment vs section LMA conflicts.
3769 Also add the sections to the section array allocated above.
3770 Also add the sections to the current segment. In the common
3771 case, where the sections have not been moved, this means that
3772 we have completely filled the segment, and there is nothing
3779 for (j
= 0, s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
3781 os
= s
->output_section
;
3783 if ((((IS_CONTAINED_BY (s
->vma
, s
->_raw_size
, p
->p_vaddr
, p
)
3784 || IS_SOLARIS_PT_INTERP (p
, s
))
3785 && (s
->flags
& SEC_ALLOC
) != 0)
3786 || IS_COREFILE_NOTE (p
, s
))
3791 /* The Solaris native linker always sets p_paddr to 0.
3792 We try to catch that case here, and set it to the
3798 && (os
->vma
== (p
->p_vaddr
3799 + (m
->includes_filehdr
3802 + (m
->includes_phdrs
3803 ? iehdr
->e_phnum
* iehdr
->e_phentsize
3805 m
->p_paddr
= p
->p_vaddr
;
3807 /* Match up the physical address of the segment with the
3808 LMA address of the output section. */
3809 if (IS_CONTAINED_BY (os
->lma
, os
->_raw_size
, m
->p_paddr
, p
)
3810 || IS_COREFILE_NOTE (p
, s
))
3812 if (matching_lma
== 0)
3813 matching_lma
= os
->lma
;
3815 /* We assume that if the section fits within the segment
3816 that it does not overlap any other section within that
3818 m
->sections
[isec
++] = os
;
3820 else if (suggested_lma
== 0)
3821 suggested_lma
= os
->lma
;
3825 BFD_ASSERT (j
== csecs
);
3827 /* Step Two: Adjust the physical address of the current segment,
3831 /* All of the sections fitted within the segment as currently
3832 specified. This is the default case. Add the segment to
3833 the list of built segments and carry on to process the next
3834 program header in the input BFD. */
3844 if (matching_lma
!= 0)
3846 /* At least one section fits inside the current segment.
3847 Keep it, but modify its physical address to match the
3848 LMA of the first section that fitted. */
3850 m
->p_paddr
= matching_lma
;
3854 /* None of the sections fitted inside the current segment.
3855 Change the current segment's physical address to match
3856 the LMA of the first section. */
3858 m
->p_paddr
= suggested_lma
;
3861 /* Offset the segment physical address from the lma to allow
3862 for space taken up by elf headers. */
3863 if (m
->includes_filehdr
)
3864 m
->p_paddr
-= iehdr
->e_ehsize
;
3866 if (m
->includes_phdrs
)
3867 m
->p_paddr
-= iehdr
->e_phnum
* iehdr
->e_phentsize
;
3870 /* Step Three: Loop over the sections again, this time assigning
3871 those that fit to the current segment and remvoing them from the
3872 sections array; but making sure not to leave large gaps. Once all
3873 possible sections have been assigned to the current segment it is
3874 added to the list of built segments and if sections still remain
3875 to be assigned, a new segment is constructed before repeating
3883 /* Fill the current segment with sections that fit. */
3884 for (j
= 0; j
< csecs
; j
++)
3891 os
= s
->output_section
;
3893 if (IS_CONTAINED_BY (os
->lma
, os
->_raw_size
, m
->p_paddr
, p
)
3894 || IS_COREFILE_NOTE (p
, s
))
3898 /* If the first section in a segment does not start at
3899 the beginning of the segment, then something is wrong. */
3900 if (os
->lma
!= (m
->p_paddr
3901 + (m
->includes_filehdr
3902 ? iehdr
->e_ehsize
: 0)
3903 + (m
->includes_phdrs
3904 ? iehdr
->e_phnum
* iehdr
->e_phentsize
3910 asection
* prev_sec
;
3911 bfd_vma maxpagesize
;
3913 prev_sec
= m
->sections
[m
->count
- 1];
3914 maxpagesize
= get_elf_backend_data (obfd
)->maxpagesize
;
3916 /* If the gap between the end of the previous section
3917 and the start of this section is more than maxpagesize
3918 then we need to start a new segment. */
3919 if (BFD_ALIGN (prev_sec
->lma
+ prev_sec
->_raw_size
, maxpagesize
)
3920 < BFD_ALIGN (os
->lma
, maxpagesize
))
3922 if (suggested_lma
== 0)
3923 suggested_lma
= os
->lma
;
3929 m
->sections
[m
->count
++] = os
;
3933 else if (suggested_lma
== 0)
3934 suggested_lma
= os
->lma
;
3937 BFD_ASSERT (m
->count
> 0);
3939 /* Add the current segment to the list of built segments. */
3945 /* We still have not allocated all of the sections to
3946 segments. Create a new segment here, initialise it
3947 and carry on looping. */
3949 m
= ((struct elf_segment_map
*)
3951 (sizeof (struct elf_segment_map
)
3952 + ((size_t) csecs
- 1) * sizeof (asection
*))));
3956 /* Initialise the fields of the segment map. Set the physical
3957 physical address to the LMA of the first section that has
3958 not yet been assigned. */
3961 m
->p_type
= p
->p_type
;
3962 m
->p_flags
= p
->p_flags
;
3963 m
->p_flags_valid
= 1;
3964 m
->p_paddr
= suggested_lma
;
3965 m
->p_paddr_valid
= 1;
3966 m
->includes_filehdr
= 0;
3967 m
->includes_phdrs
= 0;
3970 while (isec
< csecs
);
3975 /* The Solaris linker creates program headers in which all the
3976 p_paddr fields are zero. When we try to objcopy or strip such a
3977 file, we get confused. Check for this case, and if we find it
3978 reset the p_paddr_valid fields. */
3979 for (m
= mfirst
; m
!= NULL
; m
= m
->next
)
3980 if (m
->p_paddr
!= 0)
3984 for (m
= mfirst
; m
!= NULL
; m
= m
->next
)
3985 m
->p_paddr_valid
= 0;
3988 elf_tdata (obfd
)->segment_map
= mfirst
;
3991 /* Final Step: Sort the segments into ascending order of physical address. */
3994 struct elf_segment_map
* prev
;
3997 for (m
= mfirst
->next
; m
!= NULL
; prev
= m
, m
= m
->next
)
3999 /* Yes I know - its a bubble sort....*/
4000 if (m
->next
!= NULL
&& (m
->next
->p_paddr
< m
->p_paddr
))
4002 /* swap m and m->next */
4003 prev
->next
= m
->next
;
4004 m
->next
= m
->next
->next
;
4005 prev
->next
->next
= m
;
4014 #undef IS_CONTAINED_BY
4015 #undef IS_SOLARIS_PT_INTERP
4016 #undef IS_COREFILE_NOTE
4020 /* Copy private section information. This copies over the entsize
4021 field, and sometimes the info field. */
4024 _bfd_elf_copy_private_section_data (ibfd
, isec
, obfd
, osec
)
4030 Elf_Internal_Shdr
*ihdr
, *ohdr
;
4032 if (ibfd
->xvec
->flavour
!= bfd_target_elf_flavour
4033 || obfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
4036 /* Copy over private BFD data if it has not already been copied.
4037 This must be done here, rather than in the copy_private_bfd_data
4038 entry point, because the latter is called after the section
4039 contents have been set, which means that the program headers have
4040 already been worked out. */
4041 if (elf_tdata (obfd
)->segment_map
== NULL
4042 && elf_tdata (ibfd
)->phdr
!= NULL
)
4046 /* Only set up the segments if there are no more SEC_ALLOC
4047 sections. FIXME: This won't do the right thing if objcopy is
4048 used to remove the last SEC_ALLOC section, since objcopy
4049 won't call this routine in that case. */
4050 for (s
= isec
->next
; s
!= NULL
; s
= s
->next
)
4051 if ((s
->flags
& SEC_ALLOC
) != 0)
4055 if (! copy_private_bfd_data (ibfd
, obfd
))
4060 ihdr
= &elf_section_data (isec
)->this_hdr
;
4061 ohdr
= &elf_section_data (osec
)->this_hdr
;
4063 ohdr
->sh_entsize
= ihdr
->sh_entsize
;
4065 if (ihdr
->sh_type
== SHT_SYMTAB
4066 || ihdr
->sh_type
== SHT_DYNSYM
4067 || ihdr
->sh_type
== SHT_GNU_verneed
4068 || ihdr
->sh_type
== SHT_GNU_verdef
)
4069 ohdr
->sh_info
= ihdr
->sh_info
;
4071 elf_section_data (osec
)->use_rela_p
4072 = elf_section_data (isec
)->use_rela_p
;
4077 /* Copy private symbol information. If this symbol is in a section
4078 which we did not map into a BFD section, try to map the section
4079 index correctly. We use special macro definitions for the mapped
4080 section indices; these definitions are interpreted by the
4081 swap_out_syms function. */
4083 #define MAP_ONESYMTAB (SHN_LORESERVE - 1)
4084 #define MAP_DYNSYMTAB (SHN_LORESERVE - 2)
4085 #define MAP_STRTAB (SHN_LORESERVE - 3)
4086 #define MAP_SHSTRTAB (SHN_LORESERVE - 4)
4089 _bfd_elf_copy_private_symbol_data (ibfd
, isymarg
, obfd
, osymarg
)
4095 elf_symbol_type
*isym
, *osym
;
4097 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
4098 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
4101 isym
= elf_symbol_from (ibfd
, isymarg
);
4102 osym
= elf_symbol_from (obfd
, osymarg
);
4106 && bfd_is_abs_section (isym
->symbol
.section
))
4110 shndx
= isym
->internal_elf_sym
.st_shndx
;
4111 if (shndx
== elf_onesymtab (ibfd
))
4112 shndx
= MAP_ONESYMTAB
;
4113 else if (shndx
== elf_dynsymtab (ibfd
))
4114 shndx
= MAP_DYNSYMTAB
;
4115 else if (shndx
== elf_tdata (ibfd
)->strtab_section
)
4117 else if (shndx
== elf_tdata (ibfd
)->shstrtab_section
)
4118 shndx
= MAP_SHSTRTAB
;
4119 osym
->internal_elf_sym
.st_shndx
= shndx
;
4125 /* Swap out the symbols. */
4128 swap_out_syms (abfd
, sttp
, relocatable_p
)
4130 struct bfd_strtab_hash
**sttp
;
4133 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
4135 if (!elf_map_symbols (abfd
))
4138 /* Dump out the symtabs. */
4140 int symcount
= bfd_get_symcount (abfd
);
4141 asymbol
**syms
= bfd_get_outsymbols (abfd
);
4142 struct bfd_strtab_hash
*stt
;
4143 Elf_Internal_Shdr
*symtab_hdr
;
4144 Elf_Internal_Shdr
*symstrtab_hdr
;
4145 char *outbound_syms
;
4148 stt
= _bfd_elf_stringtab_init ();
4152 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4153 symtab_hdr
->sh_type
= SHT_SYMTAB
;
4154 symtab_hdr
->sh_entsize
= bed
->s
->sizeof_sym
;
4155 symtab_hdr
->sh_size
= symtab_hdr
->sh_entsize
* (symcount
+ 1);
4156 symtab_hdr
->sh_info
= elf_num_locals (abfd
) + 1;
4157 symtab_hdr
->sh_addralign
= bed
->s
->file_align
;
4159 symstrtab_hdr
= &elf_tdata (abfd
)->strtab_hdr
;
4160 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
4162 outbound_syms
= bfd_alloc (abfd
,
4163 (1 + symcount
) * bed
->s
->sizeof_sym
);
4164 if (outbound_syms
== NULL
)
4166 symtab_hdr
->contents
= (PTR
) outbound_syms
;
4168 /* now generate the data (for "contents") */
4170 /* Fill in zeroth symbol and swap it out. */
4171 Elf_Internal_Sym sym
;
4177 sym
.st_shndx
= SHN_UNDEF
;
4178 bed
->s
->swap_symbol_out (abfd
, &sym
, (PTR
) outbound_syms
);
4179 outbound_syms
+= bed
->s
->sizeof_sym
;
4181 for (idx
= 0; idx
< symcount
; idx
++)
4183 Elf_Internal_Sym sym
;
4184 bfd_vma value
= syms
[idx
]->value
;
4185 elf_symbol_type
*type_ptr
;
4186 flagword flags
= syms
[idx
]->flags
;
4189 if (flags
& BSF_SECTION_SYM
)
4190 /* Section symbols have no names. */
4194 sym
.st_name
= (unsigned long) _bfd_stringtab_add (stt
,
4197 if (sym
.st_name
== (unsigned long) -1)
4201 type_ptr
= elf_symbol_from (abfd
, syms
[idx
]);
4203 if ((flags
& BSF_SECTION_SYM
) == 0
4204 && bfd_is_com_section (syms
[idx
]->section
))
4206 /* ELF common symbols put the alignment into the `value' field,
4207 and the size into the `size' field. This is backwards from
4208 how BFD handles it, so reverse it here. */
4209 sym
.st_size
= value
;
4210 if (type_ptr
== NULL
4211 || type_ptr
->internal_elf_sym
.st_value
== 0)
4212 sym
.st_value
= value
>= 16 ? 16 : (1 << bfd_log2 (value
));
4214 sym
.st_value
= type_ptr
->internal_elf_sym
.st_value
;
4215 sym
.st_shndx
= _bfd_elf_section_from_bfd_section
4216 (abfd
, syms
[idx
]->section
);
4220 asection
*sec
= syms
[idx
]->section
;
4223 if (sec
->output_section
)
4225 value
+= sec
->output_offset
;
4226 sec
= sec
->output_section
;
4228 /* Don't add in the section vma for relocatable output. */
4229 if (! relocatable_p
)
4231 sym
.st_value
= value
;
4232 sym
.st_size
= type_ptr
? type_ptr
->internal_elf_sym
.st_size
: 0;
4234 if (bfd_is_abs_section (sec
)
4236 && type_ptr
->internal_elf_sym
.st_shndx
!= 0)
4238 /* This symbol is in a real ELF section which we did
4239 not create as a BFD section. Undo the mapping done
4240 by copy_private_symbol_data. */
4241 shndx
= type_ptr
->internal_elf_sym
.st_shndx
;
4245 shndx
= elf_onesymtab (abfd
);
4248 shndx
= elf_dynsymtab (abfd
);
4251 shndx
= elf_tdata (abfd
)->strtab_section
;
4254 shndx
= elf_tdata (abfd
)->shstrtab_section
;
4262 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
4268 /* Writing this would be a hell of a lot easier if
4269 we had some decent documentation on bfd, and
4270 knew what to expect of the library, and what to
4271 demand of applications. For example, it
4272 appears that `objcopy' might not set the
4273 section of a symbol to be a section that is
4274 actually in the output file. */
4275 sec2
= bfd_get_section_by_name (abfd
, sec
->name
);
4276 BFD_ASSERT (sec2
!= 0);
4277 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec2
);
4278 BFD_ASSERT (shndx
!= -1);
4282 sym
.st_shndx
= shndx
;
4285 if ((flags
& BSF_FUNCTION
) != 0)
4287 else if ((flags
& BSF_OBJECT
) != 0)
4292 /* Processor-specific types */
4293 if (type_ptr
!= NULL
4294 && bed
->elf_backend_get_symbol_type
)
4295 type
= (*bed
->elf_backend_get_symbol_type
) (&type_ptr
->internal_elf_sym
, type
);
4297 if (flags
& BSF_SECTION_SYM
)
4298 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_SECTION
);
4299 else if (bfd_is_com_section (syms
[idx
]->section
))
4300 sym
.st_info
= ELF_ST_INFO (STB_GLOBAL
, type
);
4301 else if (bfd_is_und_section (syms
[idx
]->section
))
4302 sym
.st_info
= ELF_ST_INFO (((flags
& BSF_WEAK
)
4306 else if (flags
& BSF_FILE
)
4307 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_FILE
);
4310 int bind
= STB_LOCAL
;
4312 if (flags
& BSF_LOCAL
)
4314 else if (flags
& BSF_WEAK
)
4316 else if (flags
& BSF_GLOBAL
)
4319 sym
.st_info
= ELF_ST_INFO (bind
, type
);
4322 if (type_ptr
!= NULL
)
4323 sym
.st_other
= type_ptr
->internal_elf_sym
.st_other
;
4327 bed
->s
->swap_symbol_out (abfd
, &sym
, (PTR
) outbound_syms
);
4328 outbound_syms
+= bed
->s
->sizeof_sym
;
4332 symstrtab_hdr
->sh_size
= _bfd_stringtab_size (stt
);
4333 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
4335 symstrtab_hdr
->sh_flags
= 0;
4336 symstrtab_hdr
->sh_addr
= 0;
4337 symstrtab_hdr
->sh_entsize
= 0;
4338 symstrtab_hdr
->sh_link
= 0;
4339 symstrtab_hdr
->sh_info
= 0;
4340 symstrtab_hdr
->sh_addralign
= 1;
4346 /* Return the number of bytes required to hold the symtab vector.
4348 Note that we base it on the count plus 1, since we will null terminate
4349 the vector allocated based on this size. However, the ELF symbol table
4350 always has a dummy entry as symbol #0, so it ends up even. */
4353 _bfd_elf_get_symtab_upper_bound (abfd
)
4358 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4360 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
4361 symtab_size
= (symcount
- 1 + 1) * (sizeof (asymbol
*));
4367 _bfd_elf_get_dynamic_symtab_upper_bound (abfd
)
4372 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->dynsymtab_hdr
;
4374 if (elf_dynsymtab (abfd
) == 0)
4376 bfd_set_error (bfd_error_invalid_operation
);
4380 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
4381 symtab_size
= (symcount
- 1 + 1) * (sizeof (asymbol
*));
4387 _bfd_elf_get_reloc_upper_bound (abfd
, asect
)
4388 bfd
*abfd ATTRIBUTE_UNUSED
;
4391 return (asect
->reloc_count
+ 1) * sizeof (arelent
*);
4394 /* Canonicalize the relocs. */
4397 _bfd_elf_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
4406 if (! get_elf_backend_data (abfd
)->s
->slurp_reloc_table (abfd
,
4412 tblptr
= section
->relocation
;
4413 for (i
= 0; i
< section
->reloc_count
; i
++)
4414 *relptr
++ = tblptr
++;
4418 return section
->reloc_count
;
4422 _bfd_elf_get_symtab (abfd
, alocation
)
4424 asymbol
**alocation
;
4426 long symcount
= get_elf_backend_data (abfd
)->s
->slurp_symbol_table
4427 (abfd
, alocation
, false);
4430 bfd_get_symcount (abfd
) = symcount
;
4435 _bfd_elf_canonicalize_dynamic_symtab (abfd
, alocation
)
4437 asymbol
**alocation
;
4439 return get_elf_backend_data (abfd
)->s
->slurp_symbol_table
4440 (abfd
, alocation
, true);
4443 /* Return the size required for the dynamic reloc entries. Any
4444 section that was actually installed in the BFD, and has type
4445 SHT_REL or SHT_RELA, and uses the dynamic symbol table, is
4446 considered to be a dynamic reloc section. */
4449 _bfd_elf_get_dynamic_reloc_upper_bound (abfd
)
4455 if (elf_dynsymtab (abfd
) == 0)
4457 bfd_set_error (bfd_error_invalid_operation
);
4461 ret
= sizeof (arelent
*);
4462 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
4463 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
4464 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_REL
4465 || elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
4466 ret
+= ((s
->_raw_size
/ elf_section_data (s
)->this_hdr
.sh_entsize
)
4467 * sizeof (arelent
*));
4472 /* Canonicalize the dynamic relocation entries. Note that we return
4473 the dynamic relocations as a single block, although they are
4474 actually associated with particular sections; the interface, which
4475 was designed for SunOS style shared libraries, expects that there
4476 is only one set of dynamic relocs. Any section that was actually
4477 installed in the BFD, and has type SHT_REL or SHT_RELA, and uses
4478 the dynamic symbol table, is considered to be a dynamic reloc
4482 _bfd_elf_canonicalize_dynamic_reloc (abfd
, storage
, syms
)
4487 boolean (*slurp_relocs
) PARAMS ((bfd
*, asection
*, asymbol
**, boolean
));
4491 if (elf_dynsymtab (abfd
) == 0)
4493 bfd_set_error (bfd_error_invalid_operation
);
4497 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
4499 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
4501 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
4502 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_REL
4503 || elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
4508 if (! (*slurp_relocs
) (abfd
, s
, syms
, true))
4510 count
= s
->_raw_size
/ elf_section_data (s
)->this_hdr
.sh_entsize
;
4512 for (i
= 0; i
< count
; i
++)
4523 /* Read in the version information. */
4526 _bfd_elf_slurp_version_tables (abfd
)
4529 bfd_byte
*contents
= NULL
;
4531 if (elf_dynverdef (abfd
) != 0)
4533 Elf_Internal_Shdr
*hdr
;
4534 Elf_External_Verdef
*everdef
;
4535 Elf_Internal_Verdef
*iverdef
;
4536 Elf_Internal_Verdef
*iverdefarr
;
4537 Elf_Internal_Verdef iverdefmem
;
4539 unsigned int maxidx
;
4541 hdr
= &elf_tdata (abfd
)->dynverdef_hdr
;
4543 contents
= (bfd_byte
*) bfd_malloc (hdr
->sh_size
);
4544 if (contents
== NULL
)
4546 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
4547 || bfd_read ((PTR
) contents
, 1, hdr
->sh_size
, abfd
) != hdr
->sh_size
)
4550 /* We know the number of entries in the section but not the maximum
4551 index. Therefore we have to run through all entries and find
4553 everdef
= (Elf_External_Verdef
*) contents
;
4555 for (i
= 0; i
< hdr
->sh_info
; ++i
)
4557 _bfd_elf_swap_verdef_in (abfd
, everdef
, &iverdefmem
);
4559 if ((iverdefmem
.vd_ndx
& VERSYM_VERSION
) > maxidx
)
4560 maxidx
= iverdefmem
.vd_ndx
& VERSYM_VERSION
;
4562 everdef
= ((Elf_External_Verdef
*)
4563 ((bfd_byte
*) everdef
+ iverdefmem
.vd_next
));
4566 elf_tdata (abfd
)->verdef
=
4567 ((Elf_Internal_Verdef
*)
4568 bfd_zalloc (abfd
, maxidx
* sizeof (Elf_Internal_Verdef
)));
4569 if (elf_tdata (abfd
)->verdef
== NULL
)
4572 elf_tdata (abfd
)->cverdefs
= maxidx
;
4574 everdef
= (Elf_External_Verdef
*) contents
;
4575 iverdefarr
= elf_tdata (abfd
)->verdef
;
4576 for (i
= 0; i
< hdr
->sh_info
; i
++)
4578 Elf_External_Verdaux
*everdaux
;
4579 Elf_Internal_Verdaux
*iverdaux
;
4582 _bfd_elf_swap_verdef_in (abfd
, everdef
, &iverdefmem
);
4584 iverdef
= &iverdefarr
[(iverdefmem
.vd_ndx
& VERSYM_VERSION
) - 1];
4585 memcpy (iverdef
, &iverdefmem
, sizeof (Elf_Internal_Verdef
));
4587 iverdef
->vd_bfd
= abfd
;
4589 iverdef
->vd_auxptr
= ((Elf_Internal_Verdaux
*)
4592 * sizeof (Elf_Internal_Verdaux
))));
4593 if (iverdef
->vd_auxptr
== NULL
)
4596 everdaux
= ((Elf_External_Verdaux
*)
4597 ((bfd_byte
*) everdef
+ iverdef
->vd_aux
));
4598 iverdaux
= iverdef
->vd_auxptr
;
4599 for (j
= 0; j
< iverdef
->vd_cnt
; j
++, iverdaux
++)
4601 _bfd_elf_swap_verdaux_in (abfd
, everdaux
, iverdaux
);
4603 iverdaux
->vda_nodename
=
4604 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
4605 iverdaux
->vda_name
);
4606 if (iverdaux
->vda_nodename
== NULL
)
4609 if (j
+ 1 < iverdef
->vd_cnt
)
4610 iverdaux
->vda_nextptr
= iverdaux
+ 1;
4612 iverdaux
->vda_nextptr
= NULL
;
4614 everdaux
= ((Elf_External_Verdaux
*)
4615 ((bfd_byte
*) everdaux
+ iverdaux
->vda_next
));
4618 iverdef
->vd_nodename
= iverdef
->vd_auxptr
->vda_nodename
;
4620 if (i
+ 1 < hdr
->sh_info
)
4621 iverdef
->vd_nextdef
= iverdef
+ 1;
4623 iverdef
->vd_nextdef
= NULL
;
4625 everdef
= ((Elf_External_Verdef
*)
4626 ((bfd_byte
*) everdef
+ iverdef
->vd_next
));
4633 if (elf_dynverref (abfd
) != 0)
4635 Elf_Internal_Shdr
*hdr
;
4636 Elf_External_Verneed
*everneed
;
4637 Elf_Internal_Verneed
*iverneed
;
4640 hdr
= &elf_tdata (abfd
)->dynverref_hdr
;
4642 elf_tdata (abfd
)->verref
=
4643 ((Elf_Internal_Verneed
*)
4644 bfd_zalloc (abfd
, hdr
->sh_info
* sizeof (Elf_Internal_Verneed
)));
4645 if (elf_tdata (abfd
)->verref
== NULL
)
4648 elf_tdata (abfd
)->cverrefs
= hdr
->sh_info
;
4650 contents
= (bfd_byte
*) bfd_malloc (hdr
->sh_size
);
4651 if (contents
== NULL
)
4653 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
4654 || bfd_read ((PTR
) contents
, 1, hdr
->sh_size
, abfd
) != hdr
->sh_size
)
4657 everneed
= (Elf_External_Verneed
*) contents
;
4658 iverneed
= elf_tdata (abfd
)->verref
;
4659 for (i
= 0; i
< hdr
->sh_info
; i
++, iverneed
++)
4661 Elf_External_Vernaux
*evernaux
;
4662 Elf_Internal_Vernaux
*ivernaux
;
4665 _bfd_elf_swap_verneed_in (abfd
, everneed
, iverneed
);
4667 iverneed
->vn_bfd
= abfd
;
4669 iverneed
->vn_filename
=
4670 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
4672 if (iverneed
->vn_filename
== NULL
)
4675 iverneed
->vn_auxptr
=
4676 ((Elf_Internal_Vernaux
*)
4678 iverneed
->vn_cnt
* sizeof (Elf_Internal_Vernaux
)));
4680 evernaux
= ((Elf_External_Vernaux
*)
4681 ((bfd_byte
*) everneed
+ iverneed
->vn_aux
));
4682 ivernaux
= iverneed
->vn_auxptr
;
4683 for (j
= 0; j
< iverneed
->vn_cnt
; j
++, ivernaux
++)
4685 _bfd_elf_swap_vernaux_in (abfd
, evernaux
, ivernaux
);
4687 ivernaux
->vna_nodename
=
4688 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
4689 ivernaux
->vna_name
);
4690 if (ivernaux
->vna_nodename
== NULL
)
4693 if (j
+ 1 < iverneed
->vn_cnt
)
4694 ivernaux
->vna_nextptr
= ivernaux
+ 1;
4696 ivernaux
->vna_nextptr
= NULL
;
4698 evernaux
= ((Elf_External_Vernaux
*)
4699 ((bfd_byte
*) evernaux
+ ivernaux
->vna_next
));
4702 if (i
+ 1 < hdr
->sh_info
)
4703 iverneed
->vn_nextref
= iverneed
+ 1;
4705 iverneed
->vn_nextref
= NULL
;
4707 everneed
= ((Elf_External_Verneed
*)
4708 ((bfd_byte
*) everneed
+ iverneed
->vn_next
));
4718 if (contents
== NULL
)
4724 _bfd_elf_make_empty_symbol (abfd
)
4727 elf_symbol_type
*newsym
;
4729 newsym
= (elf_symbol_type
*) bfd_zalloc (abfd
, sizeof (elf_symbol_type
));
4734 newsym
->symbol
.the_bfd
= abfd
;
4735 return &newsym
->symbol
;
4740 _bfd_elf_get_symbol_info (ignore_abfd
, symbol
, ret
)
4741 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
4745 bfd_symbol_info (symbol
, ret
);
4748 /* Return whether a symbol name implies a local symbol. Most targets
4749 use this function for the is_local_label_name entry point, but some
4753 _bfd_elf_is_local_label_name (abfd
, name
)
4754 bfd
*abfd ATTRIBUTE_UNUSED
;
4757 /* Normal local symbols start with ``.L''. */
4758 if (name
[0] == '.' && name
[1] == 'L')
4761 /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate
4762 DWARF debugging symbols starting with ``..''. */
4763 if (name
[0] == '.' && name
[1] == '.')
4766 /* gcc will sometimes generate symbols beginning with ``_.L_'' when
4767 emitting DWARF debugging output. I suspect this is actually a
4768 small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call
4769 ASM_GENERATE_INTERNAL_LABEL, and this causes the leading
4770 underscore to be emitted on some ELF targets). For ease of use,
4771 we treat such symbols as local. */
4772 if (name
[0] == '_' && name
[1] == '.' && name
[2] == 'L' && name
[3] == '_')
4779 _bfd_elf_get_lineno (ignore_abfd
, symbol
)
4780 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
4781 asymbol
*symbol ATTRIBUTE_UNUSED
;
4788 _bfd_elf_set_arch_mach (abfd
, arch
, machine
)
4790 enum bfd_architecture arch
;
4791 unsigned long machine
;
4793 /* If this isn't the right architecture for this backend, and this
4794 isn't the generic backend, fail. */
4795 if (arch
!= get_elf_backend_data (abfd
)->arch
4796 && arch
!= bfd_arch_unknown
4797 && get_elf_backend_data (abfd
)->arch
!= bfd_arch_unknown
)
4800 return bfd_default_set_arch_mach (abfd
, arch
, machine
);
4803 /* Find the nearest line to a particular section and offset, for error
4807 _bfd_elf_find_nearest_line (abfd
,
4818 CONST
char **filename_ptr
;
4819 CONST
char **functionname_ptr
;
4820 unsigned int *line_ptr
;
4823 const char *filename
;
4828 if (_bfd_dwarf1_find_nearest_line (abfd
, section
, symbols
, offset
,
4829 filename_ptr
, functionname_ptr
,
4833 if (_bfd_dwarf2_find_nearest_line (abfd
, section
, symbols
, offset
,
4834 filename_ptr
, functionname_ptr
,
4838 if (! _bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
4839 &found
, filename_ptr
,
4840 functionname_ptr
, line_ptr
,
4841 &elf_tdata (abfd
)->line_info
))
4846 if (symbols
== NULL
)
4853 for (p
= symbols
; *p
!= NULL
; p
++)
4857 q
= (elf_symbol_type
*) *p
;
4859 if (bfd_get_section (&q
->symbol
) != section
)
4862 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
4867 filename
= bfd_asymbol_name (&q
->symbol
);
4871 if (q
->symbol
.section
== section
4872 && q
->symbol
.value
>= low_func
4873 && q
->symbol
.value
<= offset
)
4875 func
= (asymbol
*) q
;
4876 low_func
= q
->symbol
.value
;
4885 *filename_ptr
= filename
;
4886 *functionname_ptr
= bfd_asymbol_name (func
);
4892 _bfd_elf_sizeof_headers (abfd
, reloc
)
4898 ret
= get_elf_backend_data (abfd
)->s
->sizeof_ehdr
;
4900 ret
+= get_program_header_size (abfd
);
4905 _bfd_elf_set_section_contents (abfd
, section
, location
, offset
, count
)
4910 bfd_size_type count
;
4912 Elf_Internal_Shdr
*hdr
;
4914 if (! abfd
->output_has_begun
4915 && ! _bfd_elf_compute_section_file_positions
4916 (abfd
, (struct bfd_link_info
*) NULL
))
4919 hdr
= &elf_section_data (section
)->this_hdr
;
4921 if (bfd_seek (abfd
, hdr
->sh_offset
+ offset
, SEEK_SET
) == -1)
4923 if (bfd_write (location
, 1, count
, abfd
) != count
)
4930 _bfd_elf_no_info_to_howto (abfd
, cache_ptr
, dst
)
4931 bfd
*abfd ATTRIBUTE_UNUSED
;
4932 arelent
*cache_ptr ATTRIBUTE_UNUSED
;
4933 Elf_Internal_Rela
*dst ATTRIBUTE_UNUSED
;
4940 _bfd_elf_no_info_to_howto_rel (abfd
, cache_ptr
, dst
)
4943 Elf_Internal_Rel
*dst
;
4949 /* Try to convert a non-ELF reloc into an ELF one. */
4952 _bfd_elf_validate_reloc (abfd
, areloc
)
4956 /* Check whether we really have an ELF howto. */
4958 if ((*areloc
->sym_ptr_ptr
)->the_bfd
->xvec
!= abfd
->xvec
)
4960 bfd_reloc_code_real_type code
;
4961 reloc_howto_type
*howto
;
4963 /* Alien reloc: Try to determine its type to replace it with an
4964 equivalent ELF reloc. */
4966 if (areloc
->howto
->pc_relative
)
4968 switch (areloc
->howto
->bitsize
)
4971 code
= BFD_RELOC_8_PCREL
;
4974 code
= BFD_RELOC_12_PCREL
;
4977 code
= BFD_RELOC_16_PCREL
;
4980 code
= BFD_RELOC_24_PCREL
;
4983 code
= BFD_RELOC_32_PCREL
;
4986 code
= BFD_RELOC_64_PCREL
;
4992 howto
= bfd_reloc_type_lookup (abfd
, code
);
4994 if (areloc
->howto
->pcrel_offset
!= howto
->pcrel_offset
)
4996 if (howto
->pcrel_offset
)
4997 areloc
->addend
+= areloc
->address
;
4999 areloc
->addend
-= areloc
->address
; /* addend is unsigned!! */
5004 switch (areloc
->howto
->bitsize
)
5010 code
= BFD_RELOC_14
;
5013 code
= BFD_RELOC_16
;
5016 code
= BFD_RELOC_26
;
5019 code
= BFD_RELOC_32
;
5022 code
= BFD_RELOC_64
;
5028 howto
= bfd_reloc_type_lookup (abfd
, code
);
5032 areloc
->howto
= howto
;
5040 (*_bfd_error_handler
)
5041 (_("%s: unsupported relocation type %s"),
5042 bfd_get_filename (abfd
), areloc
->howto
->name
);
5043 bfd_set_error (bfd_error_bad_value
);
5048 _bfd_elf_close_and_cleanup (abfd
)
5051 if (bfd_get_format (abfd
) == bfd_object
)
5053 if (elf_shstrtab (abfd
) != NULL
)
5054 _bfd_stringtab_free (elf_shstrtab (abfd
));
5057 return _bfd_generic_close_and_cleanup (abfd
);
5060 /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY
5061 in the relocation's offset. Thus we cannot allow any sort of sanity
5062 range-checking to interfere. There is nothing else to do in processing
5065 bfd_reloc_status_type
5066 _bfd_elf_rel_vtable_reloc_fn (abfd
, re
, symbol
, data
, is
, obfd
, errmsg
)
5067 bfd
*abfd ATTRIBUTE_UNUSED
;
5068 arelent
*re ATTRIBUTE_UNUSED
;
5069 struct symbol_cache_entry
*symbol ATTRIBUTE_UNUSED
;
5070 PTR data ATTRIBUTE_UNUSED
;
5071 asection
*is ATTRIBUTE_UNUSED
;
5072 bfd
*obfd ATTRIBUTE_UNUSED
;
5073 char **errmsg ATTRIBUTE_UNUSED
;
5075 return bfd_reloc_ok
;
5079 /* Elf core file support. Much of this only works on native
5080 toolchains, since we rely on knowing the
5081 machine-dependent procfs structure in order to pick
5082 out details about the corefile. */
5084 #ifdef HAVE_SYS_PROCFS_H
5085 # include <sys/procfs.h>
5089 /* Define offsetof for those systems which lack it. */
5092 # define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
5096 /* FIXME: this is kinda wrong, but it's what gdb wants. */
5099 elfcore_make_pid (abfd
)
5102 return ((elf_tdata (abfd
)->core_lwpid
<< 16)
5103 + (elf_tdata (abfd
)->core_pid
));
5107 /* If there isn't a section called NAME, make one, using
5108 data from SECT. Note, this function will generate a
5109 reference to NAME, so you shouldn't deallocate or
5113 elfcore_maybe_make_sect (abfd
, name
, sect
)
5120 if (bfd_get_section_by_name (abfd
, name
) != NULL
)
5123 sect2
= bfd_make_section (abfd
, name
);
5127 sect2
->_raw_size
= sect
->_raw_size
;
5128 sect2
->filepos
= sect
->filepos
;
5129 sect2
->flags
= sect
->flags
;
5130 sect2
->alignment_power
= sect
->alignment_power
;
5135 /* prstatus_t exists on:
5137 linux 2.[01] + glibc
5141 #if defined (HAVE_PRSTATUS_T)
5143 elfcore_grok_prstatus (abfd
, note
)
5145 Elf_Internal_Note
* note
;
5152 if (note
->descsz
== sizeof (prstatus_t
))
5156 raw_size
= sizeof (prstat
.pr_reg
);
5157 memcpy (&prstat
, note
->descdata
, sizeof (prstat
));
5159 elf_tdata (abfd
)->core_signal
= prstat
.pr_cursig
;
5160 elf_tdata (abfd
)->core_pid
= prstat
.pr_pid
;
5162 /* pr_who exists on:
5165 pr_who doesn't exist on:
5168 #if defined (HAVE_PRSTATUS_T_PR_WHO)
5169 elf_tdata (abfd
)->core_lwpid
= prstat
.pr_who
;
5172 #if defined (__sparcv9)
5173 else if (note
->descsz
== sizeof (prstatus32_t
))
5175 /* 64-bit host, 32-bit corefile */
5176 prstatus32_t prstat
;
5178 raw_size
= sizeof (prstat
.pr_reg
);
5179 memcpy (&prstat
, note
->descdata
, sizeof (prstat
));
5181 elf_tdata (abfd
)->core_signal
= prstat
.pr_cursig
;
5182 elf_tdata (abfd
)->core_pid
= prstat
.pr_pid
;
5184 /* pr_who exists on:
5187 pr_who doesn't exist on:
5190 #if defined (HAVE_PRSTATUS_T_PR_WHO)
5191 elf_tdata (abfd
)->core_lwpid
= prstat
.pr_who
;
5194 #endif /* __sparcv9 */
5197 /* Fail - we don't know how to handle any other
5198 note size (ie. data object type). */
5202 /* Make a ".reg/999" section. */
5204 sprintf (buf
, ".reg/%d", elfcore_make_pid (abfd
));
5205 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5210 sect
= bfd_make_section (abfd
, name
);
5214 if (note
->descsz
== sizeof (prstatus_t
))
5216 sect
->_raw_size
= raw_size
;
5217 sect
->filepos
= note
->descpos
+ offsetof (prstatus_t
, pr_reg
);
5219 #if defined (__sparcv9)
5220 else if (note
->descsz
== sizeof (prstatus32_t
))
5222 sect
->_raw_size
= raw_size
;
5223 sect
->filepos
= note
->descpos
+ offsetof (prstatus32_t
, pr_reg
);
5227 sect
->flags
= SEC_HAS_CONTENTS
;
5228 sect
->alignment_power
= 2;
5230 if (! elfcore_maybe_make_sect (abfd
, ".reg", sect
))
5235 #endif /* defined (HAVE_PRSTATUS_T) */
5238 /* Create a pseudosection containing the exact contents of NOTE. This
5239 actually creates up to two pseudosections:
5240 - For the single-threaded case, a section named NAME, unless
5241 such a section already exists.
5242 - For the multi-threaded case, a section named "NAME/PID", where
5243 PID is elfcore_make_pid (abfd).
5244 Both pseudosections have identical contents: the contents of NOTE. */
5247 elfcore_make_note_pseudosection (abfd
, name
, note
)
5250 Elf_Internal_Note
* note
;
5253 char *threaded_name
;
5256 /* Build the section name. */
5258 sprintf (buf
, "%s/%d", name
, elfcore_make_pid (abfd
));
5259 threaded_name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5260 if (threaded_name
== NULL
)
5262 strcpy (threaded_name
, buf
);
5264 sect
= bfd_make_section (abfd
, threaded_name
);
5267 sect
->_raw_size
= note
->descsz
;
5268 sect
->filepos
= note
->descpos
;
5269 sect
->flags
= SEC_HAS_CONTENTS
;
5270 sect
->alignment_power
= 2;
5272 if (! elfcore_maybe_make_sect (abfd
, name
, sect
))
5279 /* There isn't a consistent prfpregset_t across platforms,
5280 but it doesn't matter, because we don't have to pick this
5281 data structure apart. */
5283 elfcore_grok_prfpreg (abfd
, note
)
5285 Elf_Internal_Note
* note
;
5287 return elfcore_make_note_pseudosection (abfd
, ".reg2", note
);
5291 /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note
5292 type of 5 (NT_PRXFPREG). Just include the whole note's contents
5295 elfcore_grok_prxfpreg (abfd
, note
)
5297 Elf_Internal_Note
* note
;
5299 return elfcore_make_note_pseudosection (abfd
, ".reg-xfp", note
);
5303 #if defined (HAVE_PRPSINFO_T)
5304 typedef prpsinfo_t elfcore_psinfo_t
;
5305 #if defined (__sparcv9) /* Sparc64 cross Sparc32 */
5306 typedef prpsinfo32_t elfcore_psinfo32_t
;
5310 #if defined (HAVE_PSINFO_T)
5311 typedef psinfo_t elfcore_psinfo_t
;
5312 #if defined (__sparcv9) /* Sparc64 cross Sparc32 */
5313 typedef psinfo32_t elfcore_psinfo32_t
;
5318 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
5320 /* return a malloc'ed copy of a string at START which is at
5321 most MAX bytes long, possibly without a terminating '\0'.
5322 the copy will always have a terminating '\0'. */
5325 elfcore_strndup (abfd
, start
, max
)
5331 char* end
= memchr (start
, '\0', max
);
5339 dup
= bfd_alloc (abfd
, len
+ 1);
5343 memcpy (dup
, start
, len
);
5350 elfcore_grok_psinfo (abfd
, note
)
5352 Elf_Internal_Note
* note
;
5354 if (note
->descsz
== sizeof (elfcore_psinfo_t
))
5356 elfcore_psinfo_t psinfo
;
5358 memcpy (&psinfo
, note
->descdata
, note
->descsz
);
5360 elf_tdata (abfd
)->core_program
5361 = elfcore_strndup (abfd
, psinfo
.pr_fname
, sizeof (psinfo
.pr_fname
));
5363 elf_tdata (abfd
)->core_command
5364 = elfcore_strndup (abfd
, psinfo
.pr_psargs
, sizeof (psinfo
.pr_psargs
));
5366 #if defined (__sparcv9)
5367 else if (note
->descsz
== sizeof (elfcore_psinfo32_t
))
5369 /* 64-bit host, 32-bit corefile */
5370 elfcore_psinfo32_t psinfo
;
5372 memcpy (&psinfo
, note
->descdata
, note
->descsz
);
5374 elf_tdata (abfd
)->core_program
5375 = elfcore_strndup (abfd
, psinfo
.pr_fname
, sizeof (psinfo
.pr_fname
));
5377 elf_tdata (abfd
)->core_command
5378 = elfcore_strndup (abfd
, psinfo
.pr_psargs
, sizeof (psinfo
.pr_psargs
));
5384 /* Fail - we don't know how to handle any other
5385 note size (ie. data object type). */
5389 /* Note that for some reason, a spurious space is tacked
5390 onto the end of the args in some (at least one anyway)
5391 implementations, so strip it off if it exists. */
5394 char* command
= elf_tdata (abfd
)->core_command
;
5395 int n
= strlen (command
);
5397 if (0 < n
&& command
[n
- 1] == ' ')
5398 command
[n
- 1] = '\0';
5403 #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */
5406 #if defined (HAVE_PSTATUS_T)
5408 elfcore_grok_pstatus (abfd
, note
)
5410 Elf_Internal_Note
* note
;
5412 if (note
->descsz
== sizeof (pstatus_t
))
5416 memcpy (&pstat
, note
->descdata
, sizeof (pstat
));
5418 elf_tdata (abfd
)->core_pid
= pstat
.pr_pid
;
5420 #if defined (__sparcv9)
5421 else if (note
->descsz
== sizeof (pstatus32_t
))
5423 /* 64-bit host, 32-bit corefile */
5426 memcpy (&pstat
, note
->descdata
, sizeof (pstat
));
5428 elf_tdata (abfd
)->core_pid
= pstat
.pr_pid
;
5431 /* Could grab some more details from the "representative"
5432 lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an
5433 NT_LWPSTATUS note, presumably. */
5437 #endif /* defined (HAVE_PSTATUS_T) */
5440 #if defined (HAVE_LWPSTATUS_T)
5442 elfcore_grok_lwpstatus (abfd
, note
)
5444 Elf_Internal_Note
* note
;
5446 lwpstatus_t lwpstat
;
5451 if (note
->descsz
!= sizeof (lwpstat
))
5454 memcpy (&lwpstat
, note
->descdata
, sizeof (lwpstat
));
5456 elf_tdata (abfd
)->core_lwpid
= lwpstat
.pr_lwpid
;
5457 elf_tdata (abfd
)->core_signal
= lwpstat
.pr_cursig
;
5459 /* Make a ".reg/999" section. */
5461 sprintf (buf
, ".reg/%d", elfcore_make_pid (abfd
));
5462 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5467 sect
= bfd_make_section (abfd
, name
);
5471 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
5472 sect
->_raw_size
= sizeof (lwpstat
.pr_context
.uc_mcontext
.gregs
);
5473 sect
->filepos
= note
->descpos
5474 + offsetof (lwpstatus_t
, pr_context
.uc_mcontext
.gregs
);
5477 #if defined (HAVE_LWPSTATUS_T_PR_REG)
5478 sect
->_raw_size
= sizeof (lwpstat
.pr_reg
);
5479 sect
->filepos
= note
->descpos
+ offsetof (lwpstatus_t
, pr_reg
);
5482 sect
->flags
= SEC_HAS_CONTENTS
;
5483 sect
->alignment_power
= 2;
5485 if (!elfcore_maybe_make_sect (abfd
, ".reg", sect
))
5488 /* Make a ".reg2/999" section */
5490 sprintf (buf
, ".reg2/%d", elfcore_make_pid (abfd
));
5491 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5496 sect
= bfd_make_section (abfd
, name
);
5500 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
5501 sect
->_raw_size
= sizeof (lwpstat
.pr_context
.uc_mcontext
.fpregs
);
5502 sect
->filepos
= note
->descpos
5503 + offsetof (lwpstatus_t
, pr_context
.uc_mcontext
.fpregs
);
5506 #if defined (HAVE_LWPSTATUS_T_PR_FPREG)
5507 sect
->_raw_size
= sizeof (lwpstat
.pr_fpreg
);
5508 sect
->filepos
= note
->descpos
+ offsetof (lwpstatus_t
, pr_fpreg
);
5511 sect
->flags
= SEC_HAS_CONTENTS
;
5512 sect
->alignment_power
= 2;
5514 if (!elfcore_maybe_make_sect (abfd
, ".reg2", sect
))
5519 #endif /* defined (HAVE_LWPSTATUS_T) */
5521 #if defined (HAVE_WIN32_PSTATUS_T)
5523 elfcore_grok_win32pstatus (abfd
, note
)
5525 Elf_Internal_Note
* note
;
5530 win32_pstatus_t pstatus
;
5532 if (note
->descsz
< sizeof (pstatus
))
5535 memcpy (& pstatus
, note
->descdata
, note
->descsz
);
5537 switch (pstatus
.data_type
)
5539 case NOTE_INFO_PROCESS
:
5540 /* FIXME: need to add ->core_command. */
5541 elf_tdata (abfd
)->core_signal
= pstatus
.data
.process_info
.signal
;
5542 elf_tdata (abfd
)->core_pid
= pstatus
.data
.process_info
.pid
;
5545 case NOTE_INFO_THREAD
:
5546 /* Make a ".reg/999" section. */
5547 sprintf (buf
, ".reg/%d", pstatus
.data
.thread_info
.tid
);
5549 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5555 sect
= bfd_make_section (abfd
, name
);
5559 sect
->_raw_size
= sizeof (pstatus
.data
.thread_info
.thread_context
);
5560 sect
->filepos
= note
->descpos
+ offsetof (struct win32_pstatus
,
5561 data
.thread_info
.thread_context
);
5562 sect
->flags
= SEC_HAS_CONTENTS
;
5563 sect
->alignment_power
= 2;
5565 if (pstatus
.data
.thread_info
.is_active_thread
)
5566 if (! elfcore_maybe_make_sect (abfd
, ".reg", sect
))
5570 case NOTE_INFO_MODULE
:
5571 /* Make a ".module/xxxxxxxx" section. */
5572 sprintf (buf
, ".module/%08x" , pstatus
.data
.module_info
.base_address
);
5574 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5580 sect
= bfd_make_section (abfd
, name
);
5585 sect
->_raw_size
= note
->descsz
;
5586 sect
->filepos
= note
->descpos
;
5587 sect
->flags
= SEC_HAS_CONTENTS
;
5588 sect
->alignment_power
= 2;
5597 #endif /* HAVE_WIN32_PSTATUS_T */
5600 elfcore_grok_note (abfd
, note
)
5602 Elf_Internal_Note
* note
;
5609 #if defined (HAVE_PRSTATUS_T)
5611 return elfcore_grok_prstatus (abfd
, note
);
5614 #if defined (HAVE_PSTATUS_T)
5616 return elfcore_grok_pstatus (abfd
, note
);
5619 #if defined (HAVE_LWPSTATUS_T)
5621 return elfcore_grok_lwpstatus (abfd
, note
);
5624 case NT_FPREGSET
: /* FIXME: rename to NT_PRFPREG */
5625 return elfcore_grok_prfpreg (abfd
, note
);
5627 #if defined (HAVE_WIN32_PSTATUS_T)
5628 case NT_WIN32PSTATUS
:
5629 return elfcore_grok_win32pstatus (abfd
, note
);
5632 case NT_PRXFPREG
: /* Linux SSE extension */
5633 if (note
->namesz
== 5
5634 && ! strcmp (note
->namedata
, "LINUX"))
5635 return elfcore_grok_prxfpreg (abfd
, note
);
5639 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
5642 return elfcore_grok_psinfo (abfd
, note
);
5649 elfcore_read_notes (abfd
, offset
, size
)
5660 if (bfd_seek (abfd
, offset
, SEEK_SET
) == -1)
5663 buf
= bfd_malloc ((size_t) size
);
5667 if (bfd_read (buf
, size
, 1, abfd
) != size
)
5675 while (p
< buf
+ size
)
5677 /* FIXME: bad alignment assumption. */
5678 Elf_External_Note
* xnp
= (Elf_External_Note
*) p
;
5679 Elf_Internal_Note in
;
5681 in
.type
= bfd_h_get_32 (abfd
, (bfd_byte
*) xnp
->type
);
5683 in
.namesz
= bfd_h_get_32 (abfd
, (bfd_byte
*) xnp
->namesz
);
5684 in
.namedata
= xnp
->name
;
5686 in
.descsz
= bfd_h_get_32 (abfd
, (bfd_byte
*) xnp
->descsz
);
5687 in
.descdata
= in
.namedata
+ BFD_ALIGN (in
.namesz
, 4);
5688 in
.descpos
= offset
+ (in
.descdata
- buf
);
5690 if (! elfcore_grok_note (abfd
, &in
))
5693 p
= in
.descdata
+ BFD_ALIGN (in
.descsz
, 4);
5701 /* FIXME: This function is now unnecessary. Callers can just call
5702 bfd_section_from_phdr directly. */
5705 _bfd_elfcore_section_from_phdr (abfd
, phdr
, sec_num
)
5707 Elf_Internal_Phdr
* phdr
;
5710 if (! bfd_section_from_phdr (abfd
, phdr
, sec_num
))
5718 /* Providing external access to the ELF program header table. */
5720 /* Return an upper bound on the number of bytes required to store a
5721 copy of ABFD's program header table entries. Return -1 if an error
5722 occurs; bfd_get_error will return an appropriate code. */
5724 bfd_get_elf_phdr_upper_bound (abfd
)
5727 if (abfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
5729 bfd_set_error (bfd_error_wrong_format
);
5733 return (elf_elfheader (abfd
)->e_phnum
5734 * sizeof (Elf_Internal_Phdr
));
5738 /* Copy ABFD's program header table entries to *PHDRS. The entries
5739 will be stored as an array of Elf_Internal_Phdr structures, as
5740 defined in include/elf/internal.h. To find out how large the
5741 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
5743 Return the number of program header table entries read, or -1 if an
5744 error occurs; bfd_get_error will return an appropriate code. */
5746 bfd_get_elf_phdrs (abfd
, phdrs
)
5752 if (abfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
5754 bfd_set_error (bfd_error_wrong_format
);
5758 num_phdrs
= elf_elfheader (abfd
)->e_phnum
;
5759 memcpy (phdrs
, elf_tdata (abfd
)->phdr
,
5760 num_phdrs
* sizeof (Elf_Internal_Phdr
));