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_PLTPADSZ
: name
= "PLTPADSZ"; break;
670 case DT_MOVEENT
: name
= "MOVEENT"; break;
671 case DT_MOVESZ
: name
= "MOVESZ"; break;
672 case DT_FEATURE
: name
= "FEATURE"; break;
673 case DT_POSFLAG_1
: name
= "POSFLAG_1"; break;
674 case DT_SYMINSZ
: name
= "SYMINSZ"; break;
675 case DT_SYMINENT
: name
= "SYMINENT"; break;
676 case DT_CONFIG
: name
= "CONFIG"; break;
677 case DT_DEPAUDIT
: name
= "DEPAUDIT"; break;
678 case DT_AUDIT
: name
= "AUDIT"; break;
679 case DT_PLTPAD
: name
= "PLTPAD"; break;
680 case DT_MOVETAB
: name
= "MOVETAB"; break;
681 case DT_SYMINFO
: name
= "SYMINFO"; break;
682 case DT_RELACOUNT
: name
= "RELACOUNT"; break;
683 case DT_RELCOUNT
: name
= "RELCOUNT"; break;
684 case DT_FLAGS_1
: name
= "FLAGS_1"; break;
685 case DT_VERSYM
: name
= "VERSYM"; break;
686 case DT_VERDEF
: name
= "VERDEF"; break;
687 case DT_VERDEFNUM
: name
= "VERDEFNUM"; break;
688 case DT_VERNEED
: name
= "VERNEED"; break;
689 case DT_VERNEEDNUM
: name
= "VERNEEDNUM"; break;
690 case DT_AUXILIARY
: name
= "AUXILIARY"; stringp
= true; break;
691 case DT_USED
: name
= "USED"; break;
692 case DT_FILTER
: name
= "FILTER"; stringp
= true; break;
694 case DT_CHECKSUM
: name
= "CHECKSUM"; break;
698 fprintf (f
, " %-11s ", name
);
700 fprintf (f
, "0x%lx", (unsigned long) dyn
.d_un
.d_val
);
705 string
= bfd_elf_string_from_elf_section (abfd
, link
,
709 fprintf (f
, "%s", string
);
718 if ((elf_dynverdef (abfd
) != 0 && elf_tdata (abfd
)->verdef
== NULL
)
719 || (elf_dynverref (abfd
) != 0 && elf_tdata (abfd
)->verref
== NULL
))
721 if (! _bfd_elf_slurp_version_tables (abfd
))
725 if (elf_dynverdef (abfd
) != 0)
727 Elf_Internal_Verdef
*t
;
729 fprintf (f
, _("\nVersion definitions:\n"));
730 for (t
= elf_tdata (abfd
)->verdef
; t
!= NULL
; t
= t
->vd_nextdef
)
732 fprintf (f
, "%d 0x%2.2x 0x%8.8lx %s\n", t
->vd_ndx
,
733 t
->vd_flags
, t
->vd_hash
, t
->vd_nodename
);
734 if (t
->vd_auxptr
->vda_nextptr
!= NULL
)
736 Elf_Internal_Verdaux
*a
;
739 for (a
= t
->vd_auxptr
->vda_nextptr
;
742 fprintf (f
, "%s ", a
->vda_nodename
);
748 if (elf_dynverref (abfd
) != 0)
750 Elf_Internal_Verneed
*t
;
752 fprintf (f
, _("\nVersion References:\n"));
753 for (t
= elf_tdata (abfd
)->verref
; t
!= NULL
; t
= t
->vn_nextref
)
755 Elf_Internal_Vernaux
*a
;
757 fprintf (f
, _(" required from %s:\n"), t
->vn_filename
);
758 for (a
= t
->vn_auxptr
; a
!= NULL
; a
= a
->vna_nextptr
)
759 fprintf (f
, " 0x%8.8lx 0x%2.2x %2.2d %s\n", a
->vna_hash
,
760 a
->vna_flags
, a
->vna_other
, a
->vna_nodename
);
772 /* Display ELF-specific fields of a symbol. */
775 bfd_elf_print_symbol (abfd
, filep
, symbol
, how
)
779 bfd_print_symbol_type how
;
781 FILE *file
= (FILE *) filep
;
784 case bfd_print_symbol_name
:
785 fprintf (file
, "%s", symbol
->name
);
787 case bfd_print_symbol_more
:
788 fprintf (file
, "elf ");
789 fprintf_vma (file
, symbol
->value
);
790 fprintf (file
, " %lx", (long) symbol
->flags
);
792 case bfd_print_symbol_all
:
794 CONST
char *section_name
;
795 CONST
char *name
= NULL
;
796 struct elf_backend_data
*bed
;
797 unsigned char st_other
;
799 section_name
= symbol
->section
? symbol
->section
->name
: "(*none*)";
801 bed
= get_elf_backend_data (abfd
);
802 if (bed
->elf_backend_print_symbol_all
)
803 name
= (*bed
->elf_backend_print_symbol_all
) (abfd
, filep
, symbol
);
808 bfd_print_symbol_vandf ((PTR
) file
, symbol
);
811 fprintf (file
, " %s\t", section_name
);
812 /* Print the "other" value for a symbol. For common symbols,
813 we've already printed the size; now print the alignment.
814 For other symbols, we have no specified alignment, and
815 we've printed the address; now print the size. */
817 (bfd_is_com_section (symbol
->section
)
818 ? ((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_value
819 : ((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_size
));
821 /* If we have version information, print it. */
822 if (elf_tdata (abfd
)->dynversym_section
!= 0
823 && (elf_tdata (abfd
)->dynverdef_section
!= 0
824 || elf_tdata (abfd
)->dynverref_section
!= 0))
827 const char *version_string
;
829 vernum
= ((elf_symbol_type
*) symbol
)->version
& VERSYM_VERSION
;
833 else if (vernum
== 1)
834 version_string
= "Base";
835 else if (vernum
<= elf_tdata (abfd
)->cverdefs
)
837 elf_tdata (abfd
)->verdef
[vernum
- 1].vd_nodename
;
840 Elf_Internal_Verneed
*t
;
843 for (t
= elf_tdata (abfd
)->verref
;
847 Elf_Internal_Vernaux
*a
;
849 for (a
= t
->vn_auxptr
; a
!= NULL
; a
= a
->vna_nextptr
)
851 if (a
->vna_other
== vernum
)
853 version_string
= a
->vna_nodename
;
860 if ((((elf_symbol_type
*) symbol
)->version
& VERSYM_HIDDEN
) == 0)
861 fprintf (file
, " %-11s", version_string
);
866 fprintf (file
, " (%s)", version_string
);
867 for (i
= 10 - strlen (version_string
); i
> 0; --i
)
872 /* If the st_other field is not zero, print it. */
873 st_other
= ((elf_symbol_type
*) symbol
)->internal_elf_sym
.st_other
;
878 case STV_INTERNAL
: fprintf (file
, " .internal"); break;
879 case STV_HIDDEN
: fprintf (file
, " .hidden"); break;
880 case STV_PROTECTED
: fprintf (file
, " .protected"); break;
882 /* Some other non-defined flags are also present, so print
884 fprintf (file
, " 0x%02x", (unsigned int) st_other
);
887 fprintf (file
, " %s", name
);
893 /* Create an entry in an ELF linker hash table. */
895 struct bfd_hash_entry
*
896 _bfd_elf_link_hash_newfunc (entry
, table
, string
)
897 struct bfd_hash_entry
*entry
;
898 struct bfd_hash_table
*table
;
901 struct elf_link_hash_entry
*ret
= (struct elf_link_hash_entry
*) entry
;
903 /* Allocate the structure if it has not already been allocated by a
905 if (ret
== (struct elf_link_hash_entry
*) NULL
)
906 ret
= ((struct elf_link_hash_entry
*)
907 bfd_hash_allocate (table
, sizeof (struct elf_link_hash_entry
)));
908 if (ret
== (struct elf_link_hash_entry
*) NULL
)
909 return (struct bfd_hash_entry
*) ret
;
911 /* Call the allocation method of the superclass. */
912 ret
= ((struct elf_link_hash_entry
*)
913 _bfd_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
915 if (ret
!= (struct elf_link_hash_entry
*) NULL
)
917 /* Set local fields. */
921 ret
->dynstr_index
= 0;
923 ret
->got
.offset
= (bfd_vma
) -1;
924 ret
->plt
.offset
= (bfd_vma
) -1;
925 ret
->linker_section_pointer
= (elf_linker_section_pointers_t
*)0;
926 ret
->verinfo
.verdef
= NULL
;
927 ret
->vtable_entries_used
= NULL
;
928 ret
->vtable_entries_size
= 0;
929 ret
->vtable_parent
= NULL
;
930 ret
->type
= STT_NOTYPE
;
932 /* Assume that we have been called by a non-ELF symbol reader.
933 This flag is then reset by the code which reads an ELF input
934 file. This ensures that a symbol created by a non-ELF symbol
935 reader will have the flag set correctly. */
936 ret
->elf_link_hash_flags
= ELF_LINK_NON_ELF
;
939 return (struct bfd_hash_entry
*) ret
;
942 /* Copy data from an indirect symbol to its direct symbol, hiding the
943 old indirect symbol. */
946 _bfd_elf_link_hash_copy_indirect (dir
, ind
)
947 struct elf_link_hash_entry
*dir
, *ind
;
949 /* Copy down any references that we may have already seen to the
950 symbol which just became indirect. */
952 dir
->elf_link_hash_flags
|=
953 (ind
->elf_link_hash_flags
954 & (ELF_LINK_HASH_REF_DYNAMIC
955 | ELF_LINK_HASH_REF_REGULAR
956 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
957 | ELF_LINK_NON_GOT_REF
));
959 /* Copy over the global and procedure linkage table offset entries.
960 These may have been already set up by a check_relocs routine. */
961 if (dir
->got
.offset
== (bfd_vma
) -1)
963 dir
->got
.offset
= ind
->got
.offset
;
964 ind
->got
.offset
= (bfd_vma
) -1;
966 BFD_ASSERT (ind
->got
.offset
== (bfd_vma
) -1);
968 if (dir
->plt
.offset
== (bfd_vma
) -1)
970 dir
->plt
.offset
= ind
->plt
.offset
;
971 ind
->plt
.offset
= (bfd_vma
) -1;
973 BFD_ASSERT (ind
->plt
.offset
== (bfd_vma
) -1);
975 if (dir
->dynindx
== -1)
977 dir
->dynindx
= ind
->dynindx
;
978 dir
->dynstr_index
= ind
->dynstr_index
;
980 ind
->dynstr_index
= 0;
982 BFD_ASSERT (ind
->dynindx
== -1);
986 _bfd_elf_link_hash_hide_symbol(info
, h
)
987 struct bfd_link_info
*info ATTRIBUTE_UNUSED
;
988 struct elf_link_hash_entry
*h
;
990 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
992 h
->plt
.offset
= (bfd_vma
) -1;
995 /* Initialize an ELF linker hash table. */
998 _bfd_elf_link_hash_table_init (table
, abfd
, newfunc
)
999 struct elf_link_hash_table
*table
;
1001 struct bfd_hash_entry
*(*newfunc
) PARAMS ((struct bfd_hash_entry
*,
1002 struct bfd_hash_table
*,
1005 table
->dynamic_sections_created
= false;
1006 table
->dynobj
= NULL
;
1007 /* The first dynamic symbol is a dummy. */
1008 table
->dynsymcount
= 1;
1009 table
->dynstr
= NULL
;
1010 table
->bucketcount
= 0;
1011 table
->needed
= NULL
;
1013 table
->stab_info
= NULL
;
1014 table
->dynlocal
= NULL
;
1015 return _bfd_link_hash_table_init (&table
->root
, abfd
, newfunc
);
1018 /* Create an ELF linker hash table. */
1020 struct bfd_link_hash_table
*
1021 _bfd_elf_link_hash_table_create (abfd
)
1024 struct elf_link_hash_table
*ret
;
1026 ret
= ((struct elf_link_hash_table
*)
1027 bfd_alloc (abfd
, sizeof (struct elf_link_hash_table
)));
1028 if (ret
== (struct elf_link_hash_table
*) NULL
)
1031 if (! _bfd_elf_link_hash_table_init (ret
, abfd
, _bfd_elf_link_hash_newfunc
))
1033 bfd_release (abfd
, ret
);
1040 /* This is a hook for the ELF emulation code in the generic linker to
1041 tell the backend linker what file name to use for the DT_NEEDED
1042 entry for a dynamic object. The generic linker passes name as an
1043 empty string to indicate that no DT_NEEDED entry should be made. */
1046 bfd_elf_set_dt_needed_name (abfd
, name
)
1050 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1051 && bfd_get_format (abfd
) == bfd_object
)
1052 elf_dt_name (abfd
) = name
;
1055 /* Get the list of DT_NEEDED entries for a link. This is a hook for
1056 the linker ELF emulation code. */
1058 struct bfd_link_needed_list
*
1059 bfd_elf_get_needed_list (abfd
, info
)
1060 bfd
*abfd ATTRIBUTE_UNUSED
;
1061 struct bfd_link_info
*info
;
1063 if (info
->hash
->creator
->flavour
!= bfd_target_elf_flavour
)
1065 return elf_hash_table (info
)->needed
;
1068 /* Get the name actually used for a dynamic object for a link. This
1069 is the SONAME entry if there is one. Otherwise, it is the string
1070 passed to bfd_elf_set_dt_needed_name, or it is the filename. */
1073 bfd_elf_get_dt_soname (abfd
)
1076 if (bfd_get_flavour (abfd
) == bfd_target_elf_flavour
1077 && bfd_get_format (abfd
) == bfd_object
)
1078 return elf_dt_name (abfd
);
1082 /* Get the list of DT_NEEDED entries from a BFD. This is a hook for
1083 the ELF linker emulation code. */
1086 bfd_elf_get_bfd_needed_list (abfd
, pneeded
)
1088 struct bfd_link_needed_list
**pneeded
;
1091 bfd_byte
*dynbuf
= NULL
;
1094 bfd_byte
*extdyn
, *extdynend
;
1096 void (*swap_dyn_in
) PARAMS ((bfd
*, const PTR
, Elf_Internal_Dyn
*));
1100 if (bfd_get_flavour (abfd
) != bfd_target_elf_flavour
1101 || bfd_get_format (abfd
) != bfd_object
)
1104 s
= bfd_get_section_by_name (abfd
, ".dynamic");
1105 if (s
== NULL
|| s
->_raw_size
== 0)
1108 dynbuf
= (bfd_byte
*) bfd_malloc (s
->_raw_size
);
1112 if (! bfd_get_section_contents (abfd
, s
, (PTR
) dynbuf
, (file_ptr
) 0,
1116 elfsec
= _bfd_elf_section_from_bfd_section (abfd
, s
);
1120 link
= elf_elfsections (abfd
)[elfsec
]->sh_link
;
1122 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
1123 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
1126 extdynend
= extdyn
+ s
->_raw_size
;
1127 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
1129 Elf_Internal_Dyn dyn
;
1131 (*swap_dyn_in
) (abfd
, (PTR
) extdyn
, &dyn
);
1133 if (dyn
.d_tag
== DT_NULL
)
1136 if (dyn
.d_tag
== DT_NEEDED
)
1139 struct bfd_link_needed_list
*l
;
1141 string
= bfd_elf_string_from_elf_section (abfd
, link
,
1146 l
= (struct bfd_link_needed_list
*) bfd_alloc (abfd
, sizeof *l
);
1167 /* Allocate an ELF string table--force the first byte to be zero. */
1169 struct bfd_strtab_hash
*
1170 _bfd_elf_stringtab_init ()
1172 struct bfd_strtab_hash
*ret
;
1174 ret
= _bfd_stringtab_init ();
1179 loc
= _bfd_stringtab_add (ret
, "", true, false);
1180 BFD_ASSERT (loc
== 0 || loc
== (bfd_size_type
) -1);
1181 if (loc
== (bfd_size_type
) -1)
1183 _bfd_stringtab_free (ret
);
1190 /* ELF .o/exec file reading */
1192 /* Create a new bfd section from an ELF section header. */
1195 bfd_section_from_shdr (abfd
, shindex
)
1197 unsigned int shindex
;
1199 Elf_Internal_Shdr
*hdr
= elf_elfsections (abfd
)[shindex
];
1200 Elf_Internal_Ehdr
*ehdr
= elf_elfheader (abfd
);
1201 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1204 name
= elf_string_from_elf_strtab (abfd
, hdr
->sh_name
);
1206 switch (hdr
->sh_type
)
1209 /* Inactive section. Throw it away. */
1212 case SHT_PROGBITS
: /* Normal section with contents. */
1213 case SHT_DYNAMIC
: /* Dynamic linking information. */
1214 case SHT_NOBITS
: /* .bss section. */
1215 case SHT_HASH
: /* .hash section. */
1216 case SHT_NOTE
: /* .note section. */
1217 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1219 case SHT_SYMTAB
: /* A symbol table */
1220 if (elf_onesymtab (abfd
) == shindex
)
1223 BFD_ASSERT (hdr
->sh_entsize
== bed
->s
->sizeof_sym
);
1224 BFD_ASSERT (elf_onesymtab (abfd
) == 0);
1225 elf_onesymtab (abfd
) = shindex
;
1226 elf_tdata (abfd
)->symtab_hdr
= *hdr
;
1227 elf_elfsections (abfd
)[shindex
] = hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1228 abfd
->flags
|= HAS_SYMS
;
1230 /* Sometimes a shared object will map in the symbol table. If
1231 SHF_ALLOC is set, and this is a shared object, then we also
1232 treat this section as a BFD section. We can not base the
1233 decision purely on SHF_ALLOC, because that flag is sometimes
1234 set in a relocateable object file, which would confuse the
1236 if ((hdr
->sh_flags
& SHF_ALLOC
) != 0
1237 && (abfd
->flags
& DYNAMIC
) != 0
1238 && ! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
))
1243 case SHT_DYNSYM
: /* A dynamic symbol table */
1244 if (elf_dynsymtab (abfd
) == shindex
)
1247 BFD_ASSERT (hdr
->sh_entsize
== bed
->s
->sizeof_sym
);
1248 BFD_ASSERT (elf_dynsymtab (abfd
) == 0);
1249 elf_dynsymtab (abfd
) = shindex
;
1250 elf_tdata (abfd
)->dynsymtab_hdr
= *hdr
;
1251 elf_elfsections (abfd
)[shindex
] = hdr
= &elf_tdata (abfd
)->dynsymtab_hdr
;
1252 abfd
->flags
|= HAS_SYMS
;
1254 /* Besides being a symbol table, we also treat this as a regular
1255 section, so that objcopy can handle it. */
1256 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1258 case SHT_STRTAB
: /* A string table */
1259 if (hdr
->bfd_section
!= NULL
)
1261 if (ehdr
->e_shstrndx
== shindex
)
1263 elf_tdata (abfd
)->shstrtab_hdr
= *hdr
;
1264 elf_elfsections (abfd
)[shindex
] = &elf_tdata (abfd
)->shstrtab_hdr
;
1270 for (i
= 1; i
< ehdr
->e_shnum
; i
++)
1272 Elf_Internal_Shdr
*hdr2
= elf_elfsections (abfd
)[i
];
1273 if (hdr2
->sh_link
== shindex
)
1275 if (! bfd_section_from_shdr (abfd
, i
))
1277 if (elf_onesymtab (abfd
) == i
)
1279 elf_tdata (abfd
)->strtab_hdr
= *hdr
;
1280 elf_elfsections (abfd
)[shindex
] =
1281 &elf_tdata (abfd
)->strtab_hdr
;
1284 if (elf_dynsymtab (abfd
) == i
)
1286 elf_tdata (abfd
)->dynstrtab_hdr
= *hdr
;
1287 elf_elfsections (abfd
)[shindex
] = hdr
=
1288 &elf_tdata (abfd
)->dynstrtab_hdr
;
1289 /* We also treat this as a regular section, so
1290 that objcopy can handle it. */
1293 #if 0 /* Not handling other string tables specially right now. */
1294 hdr2
= elf_elfsections (abfd
)[i
]; /* in case it moved */
1295 /* We have a strtab for some random other section. */
1296 newsect
= (asection
*) hdr2
->bfd_section
;
1299 hdr
->bfd_section
= newsect
;
1300 hdr2
= &elf_section_data (newsect
)->str_hdr
;
1302 elf_elfsections (abfd
)[shindex
] = hdr2
;
1308 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1312 /* *These* do a lot of work -- but build no sections! */
1314 asection
*target_sect
;
1315 Elf_Internal_Shdr
*hdr2
;
1317 /* Check for a bogus link to avoid crashing. */
1318 if (hdr
->sh_link
>= ehdr
->e_shnum
)
1320 ((*_bfd_error_handler
)
1321 (_("%s: invalid link %lu for reloc section %s (index %u)"),
1322 bfd_get_filename (abfd
), hdr
->sh_link
, name
, shindex
));
1323 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1326 /* For some incomprehensible reason Oracle distributes
1327 libraries for Solaris in which some of the objects have
1328 bogus sh_link fields. It would be nice if we could just
1329 reject them, but, unfortunately, some people need to use
1330 them. We scan through the section headers; if we find only
1331 one suitable symbol table, we clobber the sh_link to point
1332 to it. I hope this doesn't break anything. */
1333 if (elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
!= SHT_SYMTAB
1334 && elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
!= SHT_DYNSYM
)
1340 for (scan
= 1; scan
< ehdr
->e_shnum
; scan
++)
1342 if (elf_elfsections (abfd
)[scan
]->sh_type
== SHT_SYMTAB
1343 || elf_elfsections (abfd
)[scan
]->sh_type
== SHT_DYNSYM
)
1354 hdr
->sh_link
= found
;
1357 /* Get the symbol table. */
1358 if (elf_elfsections (abfd
)[hdr
->sh_link
]->sh_type
== SHT_SYMTAB
1359 && ! bfd_section_from_shdr (abfd
, hdr
->sh_link
))
1362 /* If this reloc section does not use the main symbol table we
1363 don't treat it as a reloc section. BFD can't adequately
1364 represent such a section, so at least for now, we don't
1365 try. We just present it as a normal section. We also
1366 can't use it as a reloc section if it points to the null
1368 if (hdr
->sh_link
!= elf_onesymtab (abfd
) || hdr
->sh_info
== SHN_UNDEF
)
1369 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1371 if (! bfd_section_from_shdr (abfd
, hdr
->sh_info
))
1373 target_sect
= bfd_section_from_elf_index (abfd
, hdr
->sh_info
);
1374 if (target_sect
== NULL
)
1377 if ((target_sect
->flags
& SEC_RELOC
) == 0
1378 || target_sect
->reloc_count
== 0)
1379 hdr2
= &elf_section_data (target_sect
)->rel_hdr
;
1382 BFD_ASSERT (elf_section_data (target_sect
)->rel_hdr2
== NULL
);
1383 hdr2
= (Elf_Internal_Shdr
*) bfd_alloc (abfd
, sizeof (*hdr2
));
1384 elf_section_data (target_sect
)->rel_hdr2
= hdr2
;
1387 elf_elfsections (abfd
)[shindex
] = hdr2
;
1388 target_sect
->reloc_count
+= hdr
->sh_size
/ hdr
->sh_entsize
;
1389 target_sect
->flags
|= SEC_RELOC
;
1390 target_sect
->relocation
= NULL
;
1391 target_sect
->rel_filepos
= hdr
->sh_offset
;
1392 /* In the section to which the relocations apply, mark whether
1393 its relocations are of the REL or RELA variety. */
1394 if (hdr
->sh_size
!= 0)
1395 elf_section_data (target_sect
)->use_rela_p
1396 = (hdr
->sh_type
== SHT_RELA
);
1397 abfd
->flags
|= HAS_RELOC
;
1402 case SHT_GNU_verdef
:
1403 elf_dynverdef (abfd
) = shindex
;
1404 elf_tdata (abfd
)->dynverdef_hdr
= *hdr
;
1405 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1408 case SHT_GNU_versym
:
1409 elf_dynversym (abfd
) = shindex
;
1410 elf_tdata (abfd
)->dynversym_hdr
= *hdr
;
1411 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1414 case SHT_GNU_verneed
:
1415 elf_dynverref (abfd
) = shindex
;
1416 elf_tdata (abfd
)->dynverref_hdr
= *hdr
;
1417 return _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
);
1424 /* Check for any processor-specific section types. */
1426 if (bed
->elf_backend_section_from_shdr
)
1427 (*bed
->elf_backend_section_from_shdr
) (abfd
, hdr
, name
);
1435 /* Given an ELF section number, retrieve the corresponding BFD
1439 bfd_section_from_elf_index (abfd
, index
)
1443 BFD_ASSERT (index
> 0 && index
< SHN_LORESERVE
);
1444 if (index
>= elf_elfheader (abfd
)->e_shnum
)
1446 return elf_elfsections (abfd
)[index
]->bfd_section
;
1450 _bfd_elf_new_section_hook (abfd
, sec
)
1454 struct bfd_elf_section_data
*sdata
;
1456 sdata
= (struct bfd_elf_section_data
*) bfd_zalloc (abfd
, sizeof (*sdata
));
1459 sec
->used_by_bfd
= (PTR
) sdata
;
1461 /* Indicate whether or not this section should use RELA relocations. */
1463 = get_elf_backend_data (abfd
)->default_use_rela_p
;
1468 /* Create a new bfd section from an ELF program header.
1470 Since program segments have no names, we generate a synthetic name
1471 of the form segment<NUM>, where NUM is generally the index in the
1472 program header table. For segments that are split (see below) we
1473 generate the names segment<NUM>a and segment<NUM>b.
1475 Note that some program segments may have a file size that is different than
1476 (less than) the memory size. All this means is that at execution the
1477 system must allocate the amount of memory specified by the memory size,
1478 but only initialize it with the first "file size" bytes read from the
1479 file. This would occur for example, with program segments consisting
1480 of combined data+bss.
1482 To handle the above situation, this routine generates TWO bfd sections
1483 for the single program segment. The first has the length specified by
1484 the file size of the segment, and the second has the length specified
1485 by the difference between the two sizes. In effect, the segment is split
1486 into it's initialized and uninitialized parts.
1491 _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, typename
)
1493 Elf_Internal_Phdr
*hdr
;
1495 const char *typename
;
1502 split
= ((hdr
->p_memsz
> 0)
1503 && (hdr
->p_filesz
> 0)
1504 && (hdr
->p_memsz
> hdr
->p_filesz
));
1505 sprintf (namebuf
, "%s%d%s", typename
, index
, split
? "a" : "");
1506 name
= bfd_alloc (abfd
, strlen (namebuf
) + 1);
1509 strcpy (name
, namebuf
);
1510 newsect
= bfd_make_section (abfd
, name
);
1511 if (newsect
== NULL
)
1513 newsect
->vma
= hdr
->p_vaddr
;
1514 newsect
->lma
= hdr
->p_paddr
;
1515 newsect
->_raw_size
= hdr
->p_filesz
;
1516 newsect
->filepos
= hdr
->p_offset
;
1517 newsect
->flags
|= SEC_HAS_CONTENTS
;
1518 if (hdr
->p_type
== PT_LOAD
)
1520 newsect
->flags
|= SEC_ALLOC
;
1521 newsect
->flags
|= SEC_LOAD
;
1522 if (hdr
->p_flags
& PF_X
)
1524 /* FIXME: all we known is that it has execute PERMISSION,
1526 newsect
->flags
|= SEC_CODE
;
1529 if (!(hdr
->p_flags
& PF_W
))
1531 newsect
->flags
|= SEC_READONLY
;
1536 sprintf (namebuf
, "%s%db", typename
, index
);
1537 name
= bfd_alloc (abfd
, strlen (namebuf
) + 1);
1540 strcpy (name
, namebuf
);
1541 newsect
= bfd_make_section (abfd
, name
);
1542 if (newsect
== NULL
)
1544 newsect
->vma
= hdr
->p_vaddr
+ hdr
->p_filesz
;
1545 newsect
->lma
= hdr
->p_paddr
+ hdr
->p_filesz
;
1546 newsect
->_raw_size
= hdr
->p_memsz
- hdr
->p_filesz
;
1547 if (hdr
->p_type
== PT_LOAD
)
1549 newsect
->flags
|= SEC_ALLOC
;
1550 if (hdr
->p_flags
& PF_X
)
1551 newsect
->flags
|= SEC_CODE
;
1553 if (!(hdr
->p_flags
& PF_W
))
1554 newsect
->flags
|= SEC_READONLY
;
1561 bfd_section_from_phdr (abfd
, hdr
, index
)
1563 Elf_Internal_Phdr
*hdr
;
1566 struct elf_backend_data
*bed
;
1568 switch (hdr
->p_type
)
1571 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "null");
1574 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "load");
1577 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "dynamic");
1580 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "interp");
1583 if (! _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "note"))
1585 if (! elfcore_read_notes (abfd
, hdr
->p_offset
, hdr
->p_filesz
))
1590 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "shlib");
1593 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "phdr");
1596 /* Check for any processor-specific program segment types.
1597 If no handler for them, default to making "segment" sections. */
1598 bed
= get_elf_backend_data (abfd
);
1599 if (bed
->elf_backend_section_from_phdr
)
1600 return (*bed
->elf_backend_section_from_phdr
) (abfd
, hdr
, index
);
1602 return _bfd_elf_make_section_from_phdr (abfd
, hdr
, index
, "segment");
1606 /* Initialize REL_HDR, the section-header for new section, containing
1607 relocations against ASECT. If USE_RELA_P is true, we use RELA
1608 relocations; otherwise, we use REL relocations. */
1611 _bfd_elf_init_reloc_shdr (abfd
, rel_hdr
, asect
, use_rela_p
)
1613 Elf_Internal_Shdr
*rel_hdr
;
1618 struct elf_backend_data
*bed
;
1620 bed
= get_elf_backend_data (abfd
);
1621 name
= bfd_alloc (abfd
, sizeof ".rela" + strlen (asect
->name
));
1624 sprintf (name
, "%s%s", use_rela_p
? ".rela" : ".rel", asect
->name
);
1626 (unsigned int) _bfd_stringtab_add (elf_shstrtab (abfd
), name
,
1628 if (rel_hdr
->sh_name
== (unsigned int) -1)
1630 rel_hdr
->sh_type
= use_rela_p
? SHT_RELA
: SHT_REL
;
1631 rel_hdr
->sh_entsize
= (use_rela_p
1632 ? bed
->s
->sizeof_rela
1633 : bed
->s
->sizeof_rel
);
1634 rel_hdr
->sh_addralign
= bed
->s
->file_align
;
1635 rel_hdr
->sh_flags
= 0;
1636 rel_hdr
->sh_addr
= 0;
1637 rel_hdr
->sh_size
= 0;
1638 rel_hdr
->sh_offset
= 0;
1643 /* Set up an ELF internal section header for a section. */
1647 elf_fake_sections (abfd
, asect
, failedptrarg
)
1652 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
1653 boolean
*failedptr
= (boolean
*) failedptrarg
;
1654 Elf_Internal_Shdr
*this_hdr
;
1658 /* We already failed; just get out of the bfd_map_over_sections
1663 this_hdr
= &elf_section_data (asect
)->this_hdr
;
1665 this_hdr
->sh_name
= (unsigned long) _bfd_stringtab_add (elf_shstrtab (abfd
),
1668 if (this_hdr
->sh_name
== (unsigned long) -1)
1674 this_hdr
->sh_flags
= 0;
1676 if ((asect
->flags
& SEC_ALLOC
) != 0
1677 || asect
->user_set_vma
)
1678 this_hdr
->sh_addr
= asect
->vma
;
1680 this_hdr
->sh_addr
= 0;
1682 this_hdr
->sh_offset
= 0;
1683 this_hdr
->sh_size
= asect
->_raw_size
;
1684 this_hdr
->sh_link
= 0;
1685 this_hdr
->sh_addralign
= 1 << asect
->alignment_power
;
1686 /* The sh_entsize and sh_info fields may have been set already by
1687 copy_private_section_data. */
1689 this_hdr
->bfd_section
= asect
;
1690 this_hdr
->contents
= NULL
;
1692 /* FIXME: This should not be based on section names. */
1693 if (strcmp (asect
->name
, ".dynstr") == 0)
1694 this_hdr
->sh_type
= SHT_STRTAB
;
1695 else if (strcmp (asect
->name
, ".hash") == 0)
1697 this_hdr
->sh_type
= SHT_HASH
;
1698 this_hdr
->sh_entsize
= bed
->s
->sizeof_hash_entry
;
1700 else if (strcmp (asect
->name
, ".dynsym") == 0)
1702 this_hdr
->sh_type
= SHT_DYNSYM
;
1703 this_hdr
->sh_entsize
= bed
->s
->sizeof_sym
;
1705 else if (strcmp (asect
->name
, ".dynamic") == 0)
1707 this_hdr
->sh_type
= SHT_DYNAMIC
;
1708 this_hdr
->sh_entsize
= bed
->s
->sizeof_dyn
;
1710 else if (strncmp (asect
->name
, ".rela", 5) == 0
1711 && get_elf_backend_data (abfd
)->may_use_rela_p
)
1713 this_hdr
->sh_type
= SHT_RELA
;
1714 this_hdr
->sh_entsize
= bed
->s
->sizeof_rela
;
1716 else if (strncmp (asect
->name
, ".rel", 4) == 0
1717 && get_elf_backend_data (abfd
)->may_use_rel_p
)
1719 this_hdr
->sh_type
= SHT_REL
;
1720 this_hdr
->sh_entsize
= bed
->s
->sizeof_rel
;
1722 else if (strncmp (asect
->name
, ".note", 5) == 0)
1723 this_hdr
->sh_type
= SHT_NOTE
;
1724 else if (strncmp (asect
->name
, ".stab", 5) == 0
1725 && strcmp (asect
->name
+ strlen (asect
->name
) - 3, "str") == 0)
1726 this_hdr
->sh_type
= SHT_STRTAB
;
1727 else if (strcmp (asect
->name
, ".gnu.version") == 0)
1729 this_hdr
->sh_type
= SHT_GNU_versym
;
1730 this_hdr
->sh_entsize
= sizeof (Elf_External_Versym
);
1732 else if (strcmp (asect
->name
, ".gnu.version_d") == 0)
1734 this_hdr
->sh_type
= SHT_GNU_verdef
;
1735 this_hdr
->sh_entsize
= 0;
1736 /* objcopy or strip will copy over sh_info, but may not set
1737 cverdefs. The linker will set cverdefs, but sh_info will be
1739 if (this_hdr
->sh_info
== 0)
1740 this_hdr
->sh_info
= elf_tdata (abfd
)->cverdefs
;
1742 BFD_ASSERT (elf_tdata (abfd
)->cverdefs
== 0
1743 || this_hdr
->sh_info
== elf_tdata (abfd
)->cverdefs
);
1745 else if (strcmp (asect
->name
, ".gnu.version_r") == 0)
1747 this_hdr
->sh_type
= SHT_GNU_verneed
;
1748 this_hdr
->sh_entsize
= 0;
1749 /* objcopy or strip will copy over sh_info, but may not set
1750 cverrefs. The linker will set cverrefs, but sh_info will be
1752 if (this_hdr
->sh_info
== 0)
1753 this_hdr
->sh_info
= elf_tdata (abfd
)->cverrefs
;
1755 BFD_ASSERT (elf_tdata (abfd
)->cverrefs
== 0
1756 || this_hdr
->sh_info
== elf_tdata (abfd
)->cverrefs
);
1758 else if ((asect
->flags
& SEC_ALLOC
) != 0
1759 && (asect
->flags
& SEC_LOAD
) != 0)
1760 this_hdr
->sh_type
= SHT_PROGBITS
;
1761 else if ((asect
->flags
& SEC_ALLOC
) != 0
1762 && ((asect
->flags
& SEC_LOAD
) == 0))
1763 this_hdr
->sh_type
= SHT_NOBITS
;
1767 this_hdr
->sh_type
= SHT_PROGBITS
;
1770 if ((asect
->flags
& SEC_ALLOC
) != 0)
1771 this_hdr
->sh_flags
|= SHF_ALLOC
;
1772 if ((asect
->flags
& SEC_READONLY
) == 0)
1773 this_hdr
->sh_flags
|= SHF_WRITE
;
1774 if ((asect
->flags
& SEC_CODE
) != 0)
1775 this_hdr
->sh_flags
|= SHF_EXECINSTR
;
1777 /* Check for processor-specific section types. */
1778 if (bed
->elf_backend_fake_sections
)
1779 (*bed
->elf_backend_fake_sections
) (abfd
, this_hdr
, asect
);
1781 /* If the section has relocs, set up a section header for the
1782 SHT_REL[A] section. If two relocation sections are required for
1783 this section, it is up to the processor-specific back-end to
1784 create the other. */
1785 if ((asect
->flags
& SEC_RELOC
) != 0
1786 && !_bfd_elf_init_reloc_shdr (abfd
,
1787 &elf_section_data (asect
)->rel_hdr
,
1789 elf_section_data (asect
)->use_rela_p
))
1793 /* Assign all ELF section numbers. The dummy first section is handled here
1794 too. The link/info pointers for the standard section types are filled
1795 in here too, while we're at it. */
1798 assign_section_numbers (abfd
)
1801 struct elf_obj_tdata
*t
= elf_tdata (abfd
);
1803 unsigned int section_number
;
1804 Elf_Internal_Shdr
**i_shdrp
;
1808 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
1810 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
1812 d
->this_idx
= section_number
++;
1813 if ((sec
->flags
& SEC_RELOC
) == 0)
1816 d
->rel_idx
= section_number
++;
1819 d
->rel_idx2
= section_number
++;
1824 t
->shstrtab_section
= section_number
++;
1825 elf_elfheader (abfd
)->e_shstrndx
= t
->shstrtab_section
;
1826 t
->shstrtab_hdr
.sh_size
= _bfd_stringtab_size (elf_shstrtab (abfd
));
1828 if (bfd_get_symcount (abfd
) > 0)
1830 t
->symtab_section
= section_number
++;
1831 t
->strtab_section
= section_number
++;
1834 elf_elfheader (abfd
)->e_shnum
= section_number
;
1836 /* Set up the list of section header pointers, in agreement with the
1838 i_shdrp
= ((Elf_Internal_Shdr
**)
1839 bfd_alloc (abfd
, section_number
* sizeof (Elf_Internal_Shdr
*)));
1840 if (i_shdrp
== NULL
)
1843 i_shdrp
[0] = ((Elf_Internal_Shdr
*)
1844 bfd_alloc (abfd
, sizeof (Elf_Internal_Shdr
)));
1845 if (i_shdrp
[0] == NULL
)
1847 bfd_release (abfd
, i_shdrp
);
1850 memset (i_shdrp
[0], 0, sizeof (Elf_Internal_Shdr
));
1852 elf_elfsections (abfd
) = i_shdrp
;
1854 i_shdrp
[t
->shstrtab_section
] = &t
->shstrtab_hdr
;
1855 if (bfd_get_symcount (abfd
) > 0)
1857 i_shdrp
[t
->symtab_section
] = &t
->symtab_hdr
;
1858 i_shdrp
[t
->strtab_section
] = &t
->strtab_hdr
;
1859 t
->symtab_hdr
.sh_link
= t
->strtab_section
;
1861 for (sec
= abfd
->sections
; sec
; sec
= sec
->next
)
1863 struct bfd_elf_section_data
*d
= elf_section_data (sec
);
1867 i_shdrp
[d
->this_idx
] = &d
->this_hdr
;
1868 if (d
->rel_idx
!= 0)
1869 i_shdrp
[d
->rel_idx
] = &d
->rel_hdr
;
1870 if (d
->rel_idx2
!= 0)
1871 i_shdrp
[d
->rel_idx2
] = d
->rel_hdr2
;
1873 /* Fill in the sh_link and sh_info fields while we're at it. */
1875 /* sh_link of a reloc section is the section index of the symbol
1876 table. sh_info is the section index of the section to which
1877 the relocation entries apply. */
1878 if (d
->rel_idx
!= 0)
1880 d
->rel_hdr
.sh_link
= t
->symtab_section
;
1881 d
->rel_hdr
.sh_info
= d
->this_idx
;
1883 if (d
->rel_idx2
!= 0)
1885 d
->rel_hdr2
->sh_link
= t
->symtab_section
;
1886 d
->rel_hdr2
->sh_info
= d
->this_idx
;
1889 switch (d
->this_hdr
.sh_type
)
1893 /* A reloc section which we are treating as a normal BFD
1894 section. sh_link is the section index of the symbol
1895 table. sh_info is the section index of the section to
1896 which the relocation entries apply. We assume that an
1897 allocated reloc section uses the dynamic symbol table.
1898 FIXME: How can we be sure? */
1899 s
= bfd_get_section_by_name (abfd
, ".dynsym");
1901 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
1903 /* We look up the section the relocs apply to by name. */
1905 if (d
->this_hdr
.sh_type
== SHT_REL
)
1909 s
= bfd_get_section_by_name (abfd
, name
);
1911 d
->this_hdr
.sh_info
= elf_section_data (s
)->this_idx
;
1915 /* We assume that a section named .stab*str is a stabs
1916 string section. We look for a section with the same name
1917 but without the trailing ``str'', and set its sh_link
1918 field to point to this section. */
1919 if (strncmp (sec
->name
, ".stab", sizeof ".stab" - 1) == 0
1920 && strcmp (sec
->name
+ strlen (sec
->name
) - 3, "str") == 0)
1925 len
= strlen (sec
->name
);
1926 alc
= (char *) bfd_malloc (len
- 2);
1929 strncpy (alc
, sec
->name
, len
- 3);
1930 alc
[len
- 3] = '\0';
1931 s
= bfd_get_section_by_name (abfd
, alc
);
1935 elf_section_data (s
)->this_hdr
.sh_link
= d
->this_idx
;
1937 /* This is a .stab section. */
1938 elf_section_data (s
)->this_hdr
.sh_entsize
=
1939 4 + 2 * bfd_get_arch_size (abfd
) / 8;
1946 case SHT_GNU_verneed
:
1947 case SHT_GNU_verdef
:
1948 /* sh_link is the section header index of the string table
1949 used for the dynamic entries, or the symbol table, or the
1951 s
= bfd_get_section_by_name (abfd
, ".dynstr");
1953 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
1957 case SHT_GNU_versym
:
1958 /* sh_link is the section header index of the symbol table
1959 this hash table or version table is for. */
1960 s
= bfd_get_section_by_name (abfd
, ".dynsym");
1962 d
->this_hdr
.sh_link
= elf_section_data (s
)->this_idx
;
1970 /* Map symbol from it's internal number to the external number, moving
1971 all local symbols to be at the head of the list. */
1974 sym_is_global (abfd
, sym
)
1978 /* If the backend has a special mapping, use it. */
1979 if (get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
1980 return ((*get_elf_backend_data (abfd
)->elf_backend_sym_is_global
)
1983 return ((sym
->flags
& (BSF_GLOBAL
| BSF_WEAK
)) != 0
1984 || bfd_is_und_section (bfd_get_section (sym
))
1985 || bfd_is_com_section (bfd_get_section (sym
)));
1989 elf_map_symbols (abfd
)
1992 int symcount
= bfd_get_symcount (abfd
);
1993 asymbol
**syms
= bfd_get_outsymbols (abfd
);
1994 asymbol
**sect_syms
;
1996 int num_globals
= 0;
1997 int num_locals2
= 0;
1998 int num_globals2
= 0;
2000 int num_sections
= 0;
2007 fprintf (stderr
, "elf_map_symbols\n");
2011 /* Add a section symbol for each BFD section. FIXME: Is this really
2013 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2015 if (max_index
< asect
->index
)
2016 max_index
= asect
->index
;
2020 sect_syms
= (asymbol
**) bfd_zalloc (abfd
, max_index
* sizeof (asymbol
*));
2021 if (sect_syms
== NULL
)
2023 elf_section_syms (abfd
) = sect_syms
;
2025 for (idx
= 0; idx
< symcount
; idx
++)
2029 if ((sym
->flags
& BSF_SECTION_SYM
) != 0
2036 if (sec
->owner
!= NULL
)
2038 if (sec
->owner
!= abfd
)
2040 if (sec
->output_offset
!= 0)
2043 sec
= sec
->output_section
;
2045 /* Empty sections in the input files may have had a section
2046 symbol created for them. (See the comment near the end of
2047 _bfd_generic_link_output_symbols in linker.c). If the linker
2048 script discards such sections then we will reach this point.
2049 Since we know that we cannot avoid this case, we detect it
2050 and skip the abort and the assignment to the sect_syms array.
2051 To reproduce this particular case try running the linker
2052 testsuite test ld-scripts/weak.exp for an ELF port that uses
2053 the generic linker. */
2054 if (sec
->owner
== NULL
)
2057 BFD_ASSERT (sec
->owner
== abfd
);
2059 sect_syms
[sec
->index
] = syms
[idx
];
2064 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2066 if (sect_syms
[asect
->index
] != NULL
)
2069 sym
= bfd_make_empty_symbol (abfd
);
2072 sym
->the_bfd
= abfd
;
2073 sym
->name
= asect
->name
;
2075 /* Set the flags to 0 to indicate that this one was newly added. */
2077 sym
->section
= asect
;
2078 sect_syms
[asect
->index
] = sym
;
2082 _("creating section symbol, name = %s, value = 0x%.8lx, index = %d, section = 0x%.8lx\n"),
2083 asect
->name
, (long) asect
->vma
, asect
->index
, (long) asect
);
2087 /* Classify all of the symbols. */
2088 for (idx
= 0; idx
< symcount
; idx
++)
2090 if (!sym_is_global (abfd
, syms
[idx
]))
2095 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2097 if (sect_syms
[asect
->index
] != NULL
2098 && sect_syms
[asect
->index
]->flags
== 0)
2100 sect_syms
[asect
->index
]->flags
= BSF_SECTION_SYM
;
2101 if (!sym_is_global (abfd
, sect_syms
[asect
->index
]))
2105 sect_syms
[asect
->index
]->flags
= 0;
2109 /* Now sort the symbols so the local symbols are first. */
2110 new_syms
= ((asymbol
**)
2112 (num_locals
+ num_globals
) * sizeof (asymbol
*)));
2113 if (new_syms
== NULL
)
2116 for (idx
= 0; idx
< symcount
; idx
++)
2118 asymbol
*sym
= syms
[idx
];
2121 if (!sym_is_global (abfd
, sym
))
2124 i
= num_locals
+ num_globals2
++;
2126 sym
->udata
.i
= i
+ 1;
2128 for (asect
= abfd
->sections
; asect
; asect
= asect
->next
)
2130 if (sect_syms
[asect
->index
] != NULL
2131 && sect_syms
[asect
->index
]->flags
== 0)
2133 asymbol
*sym
= sect_syms
[asect
->index
];
2136 sym
->flags
= BSF_SECTION_SYM
;
2137 if (!sym_is_global (abfd
, sym
))
2140 i
= num_locals
+ num_globals2
++;
2142 sym
->udata
.i
= i
+ 1;
2146 bfd_set_symtab (abfd
, new_syms
, num_locals
+ num_globals
);
2148 elf_num_locals (abfd
) = num_locals
;
2149 elf_num_globals (abfd
) = num_globals
;
2153 /* Align to the maximum file alignment that could be required for any
2154 ELF data structure. */
2156 static INLINE file_ptr align_file_position
PARAMS ((file_ptr
, int));
2157 static INLINE file_ptr
2158 align_file_position (off
, align
)
2162 return (off
+ align
- 1) & ~(align
- 1);
2165 /* Assign a file position to a section, optionally aligning to the
2166 required section alignment. */
2169 _bfd_elf_assign_file_position_for_section (i_shdrp
, offset
, align
)
2170 Elf_Internal_Shdr
*i_shdrp
;
2178 al
= i_shdrp
->sh_addralign
;
2180 offset
= BFD_ALIGN (offset
, al
);
2182 i_shdrp
->sh_offset
= offset
;
2183 if (i_shdrp
->bfd_section
!= NULL
)
2184 i_shdrp
->bfd_section
->filepos
= offset
;
2185 if (i_shdrp
->sh_type
!= SHT_NOBITS
)
2186 offset
+= i_shdrp
->sh_size
;
2190 /* Compute the file positions we are going to put the sections at, and
2191 otherwise prepare to begin writing out the ELF file. If LINK_INFO
2192 is not NULL, this is being called by the ELF backend linker. */
2195 _bfd_elf_compute_section_file_positions (abfd
, link_info
)
2197 struct bfd_link_info
*link_info
;
2199 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2201 struct bfd_strtab_hash
*strtab
;
2202 Elf_Internal_Shdr
*shstrtab_hdr
;
2204 if (abfd
->output_has_begun
)
2207 /* Do any elf backend specific processing first. */
2208 if (bed
->elf_backend_begin_write_processing
)
2209 (*bed
->elf_backend_begin_write_processing
) (abfd
, link_info
);
2211 if (! prep_headers (abfd
))
2214 /* Post process the headers if necessary. */
2215 if (bed
->elf_backend_post_process_headers
)
2216 (*bed
->elf_backend_post_process_headers
) (abfd
, link_info
);
2219 bfd_map_over_sections (abfd
, elf_fake_sections
, &failed
);
2223 if (!assign_section_numbers (abfd
))
2226 /* The backend linker builds symbol table information itself. */
2227 if (link_info
== NULL
&& bfd_get_symcount (abfd
) > 0)
2229 /* Non-zero if doing a relocatable link. */
2230 int relocatable_p
= ! (abfd
->flags
& (EXEC_P
| DYNAMIC
));
2232 if (! swap_out_syms (abfd
, &strtab
, relocatable_p
))
2236 shstrtab_hdr
= &elf_tdata (abfd
)->shstrtab_hdr
;
2237 /* sh_name was set in prep_headers. */
2238 shstrtab_hdr
->sh_type
= SHT_STRTAB
;
2239 shstrtab_hdr
->sh_flags
= 0;
2240 shstrtab_hdr
->sh_addr
= 0;
2241 shstrtab_hdr
->sh_size
= _bfd_stringtab_size (elf_shstrtab (abfd
));
2242 shstrtab_hdr
->sh_entsize
= 0;
2243 shstrtab_hdr
->sh_link
= 0;
2244 shstrtab_hdr
->sh_info
= 0;
2245 /* sh_offset is set in assign_file_positions_except_relocs. */
2246 shstrtab_hdr
->sh_addralign
= 1;
2248 if (!assign_file_positions_except_relocs (abfd
))
2251 if (link_info
== NULL
&& bfd_get_symcount (abfd
) > 0)
2254 Elf_Internal_Shdr
*hdr
;
2256 off
= elf_tdata (abfd
)->next_file_pos
;
2258 hdr
= &elf_tdata (abfd
)->symtab_hdr
;
2259 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
2261 hdr
= &elf_tdata (abfd
)->strtab_hdr
;
2262 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
2264 elf_tdata (abfd
)->next_file_pos
= off
;
2266 /* Now that we know where the .strtab section goes, write it
2268 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
2269 || ! _bfd_stringtab_emit (abfd
, strtab
))
2271 _bfd_stringtab_free (strtab
);
2274 abfd
->output_has_begun
= true;
2279 /* Create a mapping from a set of sections to a program segment. */
2281 static INLINE
struct elf_segment_map
*
2282 make_mapping (abfd
, sections
, from
, to
, phdr
)
2284 asection
**sections
;
2289 struct elf_segment_map
*m
;
2293 m
= ((struct elf_segment_map
*)
2295 (sizeof (struct elf_segment_map
)
2296 + (to
- from
- 1) * sizeof (asection
*))));
2300 m
->p_type
= PT_LOAD
;
2301 for (i
= from
, hdrpp
= sections
+ from
; i
< to
; i
++, hdrpp
++)
2302 m
->sections
[i
- from
] = *hdrpp
;
2303 m
->count
= to
- from
;
2305 if (from
== 0 && phdr
)
2307 /* Include the headers in the first PT_LOAD segment. */
2308 m
->includes_filehdr
= 1;
2309 m
->includes_phdrs
= 1;
2315 /* Set up a mapping from BFD sections to program segments. */
2318 map_sections_to_segments (abfd
)
2321 asection
**sections
= NULL
;
2325 struct elf_segment_map
*mfirst
;
2326 struct elf_segment_map
**pm
;
2327 struct elf_segment_map
*m
;
2329 unsigned int phdr_index
;
2330 bfd_vma maxpagesize
;
2332 boolean phdr_in_segment
= true;
2336 if (elf_tdata (abfd
)->segment_map
!= NULL
)
2339 if (bfd_count_sections (abfd
) == 0)
2342 /* Select the allocated sections, and sort them. */
2344 sections
= (asection
**) bfd_malloc (bfd_count_sections (abfd
)
2345 * sizeof (asection
*));
2346 if (sections
== NULL
)
2350 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
2352 if ((s
->flags
& SEC_ALLOC
) != 0)
2358 BFD_ASSERT (i
<= bfd_count_sections (abfd
));
2361 qsort (sections
, (size_t) count
, sizeof (asection
*), elf_sort_sections
);
2363 /* Build the mapping. */
2368 /* If we have a .interp section, then create a PT_PHDR segment for
2369 the program headers and a PT_INTERP segment for the .interp
2371 s
= bfd_get_section_by_name (abfd
, ".interp");
2372 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
2374 m
= ((struct elf_segment_map
*)
2375 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
)));
2379 m
->p_type
= PT_PHDR
;
2380 /* FIXME: UnixWare and Solaris set PF_X, Irix 5 does not. */
2381 m
->p_flags
= PF_R
| PF_X
;
2382 m
->p_flags_valid
= 1;
2383 m
->includes_phdrs
= 1;
2388 m
= ((struct elf_segment_map
*)
2389 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
)));
2393 m
->p_type
= PT_INTERP
;
2401 /* Look through the sections. We put sections in the same program
2402 segment when the start of the second section can be placed within
2403 a few bytes of the end of the first section. */
2406 maxpagesize
= get_elf_backend_data (abfd
)->maxpagesize
;
2408 dynsec
= bfd_get_section_by_name (abfd
, ".dynamic");
2410 && (dynsec
->flags
& SEC_LOAD
) == 0)
2413 /* Deal with -Ttext or something similar such that the first section
2414 is not adjacent to the program headers. This is an
2415 approximation, since at this point we don't know exactly how many
2416 program headers we will need. */
2419 bfd_size_type phdr_size
;
2421 phdr_size
= elf_tdata (abfd
)->program_header_size
;
2423 phdr_size
= get_elf_backend_data (abfd
)->s
->sizeof_phdr
;
2424 if ((abfd
->flags
& D_PAGED
) == 0
2425 || sections
[0]->lma
< phdr_size
2426 || sections
[0]->lma
% maxpagesize
< phdr_size
% maxpagesize
)
2427 phdr_in_segment
= false;
2430 for (i
= 0, hdrpp
= sections
; i
< count
; i
++, hdrpp
++)
2433 boolean new_segment
;
2437 /* See if this section and the last one will fit in the same
2440 if (last_hdr
== NULL
)
2442 /* If we don't have a segment yet, then we don't need a new
2443 one (we build the last one after this loop). */
2444 new_segment
= false;
2446 else if (last_hdr
->lma
- last_hdr
->vma
!= hdr
->lma
- hdr
->vma
)
2448 /* If this section has a different relation between the
2449 virtual address and the load address, then we need a new
2453 else if (BFD_ALIGN (last_hdr
->lma
+ last_hdr
->_raw_size
, maxpagesize
)
2454 < BFD_ALIGN (hdr
->lma
, maxpagesize
))
2456 /* If putting this section in this segment would force us to
2457 skip a page in the segment, then we need a new segment. */
2460 else if ((last_hdr
->flags
& SEC_LOAD
) == 0
2461 && (hdr
->flags
& SEC_LOAD
) != 0)
2463 /* We don't want to put a loadable section after a
2464 nonloadable section in the same segment. */
2467 else if ((abfd
->flags
& D_PAGED
) == 0)
2469 /* If the file is not demand paged, which means that we
2470 don't require the sections to be correctly aligned in the
2471 file, then there is no other reason for a new segment. */
2472 new_segment
= false;
2475 && (hdr
->flags
& SEC_READONLY
) == 0
2476 && (BFD_ALIGN (last_hdr
->lma
+ last_hdr
->_raw_size
, maxpagesize
)
2479 /* We don't want to put a writable section in a read only
2480 segment, unless they are on the same page in memory
2481 anyhow. We already know that the last section does not
2482 bring us past the current section on the page, so the
2483 only case in which the new section is not on the same
2484 page as the previous section is when the previous section
2485 ends precisely on a page boundary. */
2490 /* Otherwise, we can use the same segment. */
2491 new_segment
= false;
2496 if ((hdr
->flags
& SEC_READONLY
) == 0)
2502 /* We need a new program segment. We must create a new program
2503 header holding all the sections from phdr_index until hdr. */
2505 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_segment
);
2512 if ((hdr
->flags
& SEC_READONLY
) == 0)
2519 phdr_in_segment
= false;
2522 /* Create a final PT_LOAD program segment. */
2523 if (last_hdr
!= NULL
)
2525 m
= make_mapping (abfd
, sections
, phdr_index
, i
, phdr_in_segment
);
2533 /* If there is a .dynamic section, throw in a PT_DYNAMIC segment. */
2536 m
= ((struct elf_segment_map
*)
2537 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
)));
2541 m
->p_type
= PT_DYNAMIC
;
2543 m
->sections
[0] = dynsec
;
2549 /* For each loadable .note section, add a PT_NOTE segment. We don't
2550 use bfd_get_section_by_name, because if we link together
2551 nonloadable .note sections and loadable .note sections, we will
2552 generate two .note sections in the output file. FIXME: Using
2553 names for section types is bogus anyhow. */
2554 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
2556 if ((s
->flags
& SEC_LOAD
) != 0
2557 && strncmp (s
->name
, ".note", 5) == 0)
2559 m
= ((struct elf_segment_map
*)
2560 bfd_zalloc (abfd
, sizeof (struct elf_segment_map
)));
2564 m
->p_type
= PT_NOTE
;
2576 elf_tdata (abfd
)->segment_map
= mfirst
;
2580 if (sections
!= NULL
)
2585 /* Sort sections by address. */
2588 elf_sort_sections (arg1
, arg2
)
2592 const asection
*sec1
= *(const asection
**) arg1
;
2593 const asection
*sec2
= *(const asection
**) arg2
;
2595 /* Sort by LMA first, since this is the address used to
2596 place the section into a segment. */
2597 if (sec1
->lma
< sec2
->lma
)
2599 else if (sec1
->lma
> sec2
->lma
)
2602 /* Then sort by VMA. Normally the LMA and the VMA will be
2603 the same, and this will do nothing. */
2604 if (sec1
->vma
< sec2
->vma
)
2606 else if (sec1
->vma
> sec2
->vma
)
2609 /* Put !SEC_LOAD sections after SEC_LOAD ones. */
2611 #define TOEND(x) (((x)->flags & SEC_LOAD) == 0)
2616 return sec1
->target_index
- sec2
->target_index
;
2626 /* Sort by size, to put zero sized sections before others at the
2629 if (sec1
->_raw_size
< sec2
->_raw_size
)
2631 if (sec1
->_raw_size
> sec2
->_raw_size
)
2634 return sec1
->target_index
- sec2
->target_index
;
2637 /* Assign file positions to the sections based on the mapping from
2638 sections to segments. This function also sets up some fields in
2639 the file header, and writes out the program headers. */
2642 assign_file_positions_for_segments (abfd
)
2645 const struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
2647 struct elf_segment_map
*m
;
2649 Elf_Internal_Phdr
*phdrs
;
2651 bfd_vma filehdr_vaddr
, filehdr_paddr
;
2652 bfd_vma phdrs_vaddr
, phdrs_paddr
;
2653 Elf_Internal_Phdr
*p
;
2655 if (elf_tdata (abfd
)->segment_map
== NULL
)
2657 if (! map_sections_to_segments (abfd
))
2661 if (bed
->elf_backend_modify_segment_map
)
2663 if (! (*bed
->elf_backend_modify_segment_map
) (abfd
))
2668 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
2671 elf_elfheader (abfd
)->e_phoff
= bed
->s
->sizeof_ehdr
;
2672 elf_elfheader (abfd
)->e_phentsize
= bed
->s
->sizeof_phdr
;
2673 elf_elfheader (abfd
)->e_phnum
= count
;
2678 /* If we already counted the number of program segments, make sure
2679 that we allocated enough space. This happens when SIZEOF_HEADERS
2680 is used in a linker script. */
2681 alloc
= elf_tdata (abfd
)->program_header_size
/ bed
->s
->sizeof_phdr
;
2682 if (alloc
!= 0 && count
> alloc
)
2684 ((*_bfd_error_handler
)
2685 (_("%s: Not enough room for program headers (allocated %u, need %u)"),
2686 bfd_get_filename (abfd
), alloc
, count
));
2687 bfd_set_error (bfd_error_bad_value
);
2694 phdrs
= ((Elf_Internal_Phdr
*)
2695 bfd_alloc (abfd
, alloc
* sizeof (Elf_Internal_Phdr
)));
2699 off
= bed
->s
->sizeof_ehdr
;
2700 off
+= alloc
* bed
->s
->sizeof_phdr
;
2707 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
2714 /* If elf_segment_map is not from map_sections_to_segments, the
2715 sections may not be correctly ordered. */
2717 qsort (m
->sections
, (size_t) m
->count
, sizeof (asection
*),
2720 p
->p_type
= m
->p_type
;
2721 p
->p_flags
= m
->p_flags
;
2723 if (p
->p_type
== PT_LOAD
2725 && (m
->sections
[0]->flags
& SEC_ALLOC
) != 0)
2727 if ((abfd
->flags
& D_PAGED
) != 0)
2728 off
+= (m
->sections
[0]->vma
- off
) % bed
->maxpagesize
;
2731 bfd_size_type align
;
2734 for (i
= 0, secpp
= m
->sections
; i
< m
->count
; i
++, secpp
++)
2736 bfd_size_type secalign
;
2738 secalign
= bfd_get_section_alignment (abfd
, *secpp
);
2739 if (secalign
> align
)
2743 off
+= (m
->sections
[0]->vma
- off
) % (1 << align
);
2750 p
->p_vaddr
= m
->sections
[0]->vma
;
2752 if (m
->p_paddr_valid
)
2753 p
->p_paddr
= m
->p_paddr
;
2754 else if (m
->count
== 0)
2757 p
->p_paddr
= m
->sections
[0]->lma
;
2759 if (p
->p_type
== PT_LOAD
2760 && (abfd
->flags
& D_PAGED
) != 0)
2761 p
->p_align
= bed
->maxpagesize
;
2762 else if (m
->count
== 0)
2763 p
->p_align
= bed
->s
->file_align
;
2771 if (m
->includes_filehdr
)
2773 if (! m
->p_flags_valid
)
2776 p
->p_filesz
= bed
->s
->sizeof_ehdr
;
2777 p
->p_memsz
= bed
->s
->sizeof_ehdr
;
2780 BFD_ASSERT (p
->p_type
== PT_LOAD
);
2782 if (p
->p_vaddr
< (bfd_vma
) off
)
2784 _bfd_error_handler (_("%s: Not enough room for program headers, try linking with -N"),
2785 bfd_get_filename (abfd
));
2786 bfd_set_error (bfd_error_bad_value
);
2791 if (! m
->p_paddr_valid
)
2794 if (p
->p_type
== PT_LOAD
)
2796 filehdr_vaddr
= p
->p_vaddr
;
2797 filehdr_paddr
= p
->p_paddr
;
2801 if (m
->includes_phdrs
)
2803 if (! m
->p_flags_valid
)
2806 if (m
->includes_filehdr
)
2808 if (p
->p_type
== PT_LOAD
)
2810 phdrs_vaddr
= p
->p_vaddr
+ bed
->s
->sizeof_ehdr
;
2811 phdrs_paddr
= p
->p_paddr
+ bed
->s
->sizeof_ehdr
;
2816 p
->p_offset
= bed
->s
->sizeof_ehdr
;
2820 BFD_ASSERT (p
->p_type
== PT_LOAD
);
2821 p
->p_vaddr
-= off
- p
->p_offset
;
2822 if (! m
->p_paddr_valid
)
2823 p
->p_paddr
-= off
- p
->p_offset
;
2826 if (p
->p_type
== PT_LOAD
)
2828 phdrs_vaddr
= p
->p_vaddr
;
2829 phdrs_paddr
= p
->p_paddr
;
2832 phdrs_vaddr
= bed
->maxpagesize
+ bed
->s
->sizeof_ehdr
;
2835 p
->p_filesz
+= alloc
* bed
->s
->sizeof_phdr
;
2836 p
->p_memsz
+= alloc
* bed
->s
->sizeof_phdr
;
2839 if (p
->p_type
== PT_LOAD
2840 || (p
->p_type
== PT_NOTE
&& bfd_get_format (abfd
) == bfd_core
))
2842 if (! m
->includes_filehdr
&& ! m
->includes_phdrs
)
2848 adjust
= off
- (p
->p_offset
+ p
->p_filesz
);
2849 p
->p_filesz
+= adjust
;
2850 p
->p_memsz
+= adjust
;
2856 for (i
= 0, secpp
= m
->sections
; i
< m
->count
; i
++, secpp
++)
2860 bfd_size_type align
;
2864 align
= 1 << bfd_get_section_alignment (abfd
, sec
);
2866 /* The section may have artificial alignment forced by a
2867 link script. Notice this case by the gap between the
2868 cumulative phdr vma and the section's vma. */
2869 if (p
->p_vaddr
+ p
->p_memsz
< sec
->vma
)
2871 bfd_vma adjust
= sec
->vma
- (p
->p_vaddr
+ p
->p_memsz
);
2873 p
->p_memsz
+= adjust
;
2876 if ((flags
& SEC_LOAD
) != 0)
2877 p
->p_filesz
+= adjust
;
2880 if (p
->p_type
== PT_LOAD
)
2882 bfd_signed_vma adjust
;
2884 if ((flags
& SEC_LOAD
) != 0)
2886 adjust
= sec
->lma
- (p
->p_paddr
+ p
->p_memsz
);
2890 else if ((flags
& SEC_ALLOC
) != 0)
2892 /* The section VMA must equal the file position
2893 modulo the page size. FIXME: I'm not sure if
2894 this adjustment is really necessary. We used to
2895 not have the SEC_LOAD case just above, and then
2896 this was necessary, but now I'm not sure. */
2897 if ((abfd
->flags
& D_PAGED
) != 0)
2898 adjust
= (sec
->vma
- voff
) % bed
->maxpagesize
;
2900 adjust
= (sec
->vma
- voff
) % align
;
2909 (* _bfd_error_handler
)
2910 (_("Error: First section in segment (%s) starts at 0x%x"),
2911 bfd_section_name (abfd
, sec
), sec
->lma
);
2912 (* _bfd_error_handler
)
2913 (_(" whereas segment starts at 0x%x"),
2918 p
->p_memsz
+= adjust
;
2921 if ((flags
& SEC_LOAD
) != 0)
2922 p
->p_filesz
+= adjust
;
2927 /* We check SEC_HAS_CONTENTS here because if NOLOAD is
2928 used in a linker script we may have a section with
2929 SEC_LOAD clear but which is supposed to have
2931 if ((flags
& SEC_LOAD
) != 0
2932 || (flags
& SEC_HAS_CONTENTS
) != 0)
2933 off
+= sec
->_raw_size
;
2935 if ((flags
& SEC_ALLOC
) != 0)
2936 voff
+= sec
->_raw_size
;
2939 if (p
->p_type
== PT_NOTE
&& bfd_get_format (abfd
) == bfd_core
)
2941 /* The actual "note" segment has i == 0.
2942 This is the one that actually contains everything. */
2946 p
->p_filesz
= sec
->_raw_size
;
2947 off
+= sec
->_raw_size
;
2952 /* Fake sections -- don't need to be written. */
2955 flags
= sec
->flags
= 0;
2962 p
->p_memsz
+= sec
->_raw_size
;
2964 if ((flags
& SEC_LOAD
) != 0)
2965 p
->p_filesz
+= sec
->_raw_size
;
2967 if (align
> p
->p_align
2968 && (p
->p_type
!= PT_LOAD
|| (abfd
->flags
& D_PAGED
) == 0))
2972 if (! m
->p_flags_valid
)
2975 if ((flags
& SEC_CODE
) != 0)
2977 if ((flags
& SEC_READONLY
) == 0)
2983 /* Now that we have set the section file positions, we can set up
2984 the file positions for the non PT_LOAD segments. */
2985 for (m
= elf_tdata (abfd
)->segment_map
, p
= phdrs
;
2989 if (p
->p_type
!= PT_LOAD
&& m
->count
> 0)
2991 BFD_ASSERT (! m
->includes_filehdr
&& ! m
->includes_phdrs
);
2992 p
->p_offset
= m
->sections
[0]->filepos
;
2996 if (m
->includes_filehdr
)
2998 p
->p_vaddr
= filehdr_vaddr
;
2999 if (! m
->p_paddr_valid
)
3000 p
->p_paddr
= filehdr_paddr
;
3002 else if (m
->includes_phdrs
)
3004 p
->p_vaddr
= phdrs_vaddr
;
3005 if (! m
->p_paddr_valid
)
3006 p
->p_paddr
= phdrs_paddr
;
3011 /* Clear out any program headers we allocated but did not use. */
3012 for (; count
< alloc
; count
++, p
++)
3014 memset (p
, 0, sizeof *p
);
3015 p
->p_type
= PT_NULL
;
3018 elf_tdata (abfd
)->phdr
= phdrs
;
3020 elf_tdata (abfd
)->next_file_pos
= off
;
3022 /* Write out the program headers. */
3023 if (bfd_seek (abfd
, bed
->s
->sizeof_ehdr
, SEEK_SET
) != 0
3024 || bed
->s
->write_out_phdrs (abfd
, phdrs
, alloc
) != 0)
3030 /* Get the size of the program header.
3032 If this is called by the linker before any of the section VMA's are set, it
3033 can't calculate the correct value for a strange memory layout. This only
3034 happens when SIZEOF_HEADERS is used in a linker script. In this case,
3035 SORTED_HDRS is NULL and we assume the normal scenario of one text and one
3036 data segment (exclusive of .interp and .dynamic).
3038 ??? User written scripts must either not use SIZEOF_HEADERS, or assume there
3039 will be two segments. */
3041 static bfd_size_type
3042 get_program_header_size (abfd
)
3047 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3049 /* We can't return a different result each time we're called. */
3050 if (elf_tdata (abfd
)->program_header_size
!= 0)
3051 return elf_tdata (abfd
)->program_header_size
;
3053 if (elf_tdata (abfd
)->segment_map
!= NULL
)
3055 struct elf_segment_map
*m
;
3058 for (m
= elf_tdata (abfd
)->segment_map
; m
!= NULL
; m
= m
->next
)
3060 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
3061 return elf_tdata (abfd
)->program_header_size
;
3064 /* Assume we will need exactly two PT_LOAD segments: one for text
3065 and one for data. */
3068 s
= bfd_get_section_by_name (abfd
, ".interp");
3069 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0)
3071 /* If we have a loadable interpreter section, we need a
3072 PT_INTERP segment. In this case, assume we also need a
3073 PT_PHDR segment, although that may not be true for all
3078 if (bfd_get_section_by_name (abfd
, ".dynamic") != NULL
)
3080 /* We need a PT_DYNAMIC segment. */
3084 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
3086 if ((s
->flags
& SEC_LOAD
) != 0
3087 && strncmp (s
->name
, ".note", 5) == 0)
3089 /* We need a PT_NOTE segment. */
3094 /* Let the backend count up any program headers it might need. */
3095 if (bed
->elf_backend_additional_program_headers
)
3099 a
= (*bed
->elf_backend_additional_program_headers
) (abfd
);
3105 elf_tdata (abfd
)->program_header_size
= segs
* bed
->s
->sizeof_phdr
;
3106 return elf_tdata (abfd
)->program_header_size
;
3109 /* Work out the file positions of all the sections. This is called by
3110 _bfd_elf_compute_section_file_positions. All the section sizes and
3111 VMAs must be known before this is called.
3113 We do not consider reloc sections at this point, unless they form
3114 part of the loadable image. Reloc sections are assigned file
3115 positions in assign_file_positions_for_relocs, which is called by
3116 write_object_contents and final_link.
3118 We also don't set the positions of the .symtab and .strtab here. */
3121 assign_file_positions_except_relocs (abfd
)
3124 struct elf_obj_tdata
* const tdata
= elf_tdata (abfd
);
3125 Elf_Internal_Ehdr
* const i_ehdrp
= elf_elfheader (abfd
);
3126 Elf_Internal_Shdr
** const i_shdrpp
= elf_elfsections (abfd
);
3128 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3130 if ((abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0
3131 && bfd_get_format (abfd
) != bfd_core
)
3133 Elf_Internal_Shdr
**hdrpp
;
3136 /* Start after the ELF header. */
3137 off
= i_ehdrp
->e_ehsize
;
3139 /* We are not creating an executable, which means that we are
3140 not creating a program header, and that the actual order of
3141 the sections in the file is unimportant. */
3142 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< i_ehdrp
->e_shnum
; i
++, hdrpp
++)
3144 Elf_Internal_Shdr
*hdr
;
3147 if (hdr
->sh_type
== SHT_REL
|| hdr
->sh_type
== SHT_RELA
)
3149 hdr
->sh_offset
= -1;
3152 if (i
== tdata
->symtab_section
3153 || i
== tdata
->strtab_section
)
3155 hdr
->sh_offset
= -1;
3159 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
3165 Elf_Internal_Shdr
**hdrpp
;
3167 /* Assign file positions for the loaded sections based on the
3168 assignment of sections to segments. */
3169 if (! assign_file_positions_for_segments (abfd
))
3172 /* Assign file positions for the other sections. */
3174 off
= elf_tdata (abfd
)->next_file_pos
;
3175 for (i
= 1, hdrpp
= i_shdrpp
+ 1; i
< i_ehdrp
->e_shnum
; i
++, hdrpp
++)
3177 Elf_Internal_Shdr
*hdr
;
3180 if (hdr
->bfd_section
!= NULL
3181 && hdr
->bfd_section
->filepos
!= 0)
3182 hdr
->sh_offset
= hdr
->bfd_section
->filepos
;
3183 else if ((hdr
->sh_flags
& SHF_ALLOC
) != 0)
3185 ((*_bfd_error_handler
)
3186 (_("%s: warning: allocated section `%s' not in segment"),
3187 bfd_get_filename (abfd
),
3188 (hdr
->bfd_section
== NULL
3190 : hdr
->bfd_section
->name
)));
3191 if ((abfd
->flags
& D_PAGED
) != 0)
3192 off
+= (hdr
->sh_addr
- off
) % bed
->maxpagesize
;
3194 off
+= (hdr
->sh_addr
- off
) % hdr
->sh_addralign
;
3195 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
,
3198 else if (hdr
->sh_type
== SHT_REL
3199 || hdr
->sh_type
== SHT_RELA
3200 || hdr
== i_shdrpp
[tdata
->symtab_section
]
3201 || hdr
== i_shdrpp
[tdata
->strtab_section
])
3202 hdr
->sh_offset
= -1;
3204 off
= _bfd_elf_assign_file_position_for_section (hdr
, off
, true);
3208 /* Place the section headers. */
3209 off
= align_file_position (off
, bed
->s
->file_align
);
3210 i_ehdrp
->e_shoff
= off
;
3211 off
+= i_ehdrp
->e_shnum
* i_ehdrp
->e_shentsize
;
3213 elf_tdata (abfd
)->next_file_pos
= off
;
3222 Elf_Internal_Ehdr
*i_ehdrp
; /* Elf file header, internal form */
3223 Elf_Internal_Phdr
*i_phdrp
= 0; /* Program header table, internal form */
3224 Elf_Internal_Shdr
**i_shdrp
; /* Section header table, internal form */
3226 struct bfd_strtab_hash
*shstrtab
;
3227 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3229 i_ehdrp
= elf_elfheader (abfd
);
3230 i_shdrp
= elf_elfsections (abfd
);
3232 shstrtab
= _bfd_elf_stringtab_init ();
3233 if (shstrtab
== NULL
)
3236 elf_shstrtab (abfd
) = shstrtab
;
3238 i_ehdrp
->e_ident
[EI_MAG0
] = ELFMAG0
;
3239 i_ehdrp
->e_ident
[EI_MAG1
] = ELFMAG1
;
3240 i_ehdrp
->e_ident
[EI_MAG2
] = ELFMAG2
;
3241 i_ehdrp
->e_ident
[EI_MAG3
] = ELFMAG3
;
3243 i_ehdrp
->e_ident
[EI_CLASS
] = bed
->s
->elfclass
;
3244 i_ehdrp
->e_ident
[EI_DATA
] =
3245 bfd_big_endian (abfd
) ? ELFDATA2MSB
: ELFDATA2LSB
;
3246 i_ehdrp
->e_ident
[EI_VERSION
] = bed
->s
->ev_current
;
3248 i_ehdrp
->e_ident
[EI_OSABI
] = ELFOSABI_NONE
;
3249 i_ehdrp
->e_ident
[EI_ABIVERSION
] = 0;
3251 for (count
= EI_PAD
; count
< EI_NIDENT
; count
++)
3252 i_ehdrp
->e_ident
[count
] = 0;
3254 if ((abfd
->flags
& DYNAMIC
) != 0)
3255 i_ehdrp
->e_type
= ET_DYN
;
3256 else if ((abfd
->flags
& EXEC_P
) != 0)
3257 i_ehdrp
->e_type
= ET_EXEC
;
3258 else if (bfd_get_format (abfd
) == bfd_core
)
3259 i_ehdrp
->e_type
= ET_CORE
;
3261 i_ehdrp
->e_type
= ET_REL
;
3263 switch (bfd_get_arch (abfd
))
3265 case bfd_arch_unknown
:
3266 i_ehdrp
->e_machine
= EM_NONE
;
3268 case bfd_arch_sparc
:
3269 if (bfd_get_arch_size (abfd
) == 64)
3270 i_ehdrp
->e_machine
= EM_SPARCV9
;
3272 i_ehdrp
->e_machine
= EM_SPARC
;
3275 i_ehdrp
->e_machine
= EM_S370
;
3278 i_ehdrp
->e_machine
= EM_386
;
3281 i_ehdrp
->e_machine
= EM_IA_64
;
3283 case bfd_arch_m68hc11
:
3284 i_ehdrp
->e_machine
= EM_68HC11
;
3286 case bfd_arch_m68hc12
:
3287 i_ehdrp
->e_machine
= EM_68HC12
;
3290 i_ehdrp
->e_machine
= EM_68K
;
3293 i_ehdrp
->e_machine
= EM_88K
;
3296 i_ehdrp
->e_machine
= EM_860
;
3299 i_ehdrp
->e_machine
= EM_960
;
3301 case bfd_arch_mips
: /* MIPS Rxxxx */
3302 i_ehdrp
->e_machine
= EM_MIPS
; /* only MIPS R3000 */
3305 i_ehdrp
->e_machine
= EM_PARISC
;
3307 case bfd_arch_powerpc
:
3308 i_ehdrp
->e_machine
= EM_PPC
;
3310 case bfd_arch_alpha
:
3311 i_ehdrp
->e_machine
= EM_ALPHA
;
3314 i_ehdrp
->e_machine
= EM_SH
;
3317 i_ehdrp
->e_machine
= EM_CYGNUS_D10V
;
3320 i_ehdrp
->e_machine
= EM_CYGNUS_D30V
;
3323 i_ehdrp
->e_machine
= EM_CYGNUS_FR30
;
3325 case bfd_arch_mcore
:
3326 i_ehdrp
->e_machine
= EM_MCORE
;
3329 i_ehdrp
->e_machine
= EM_AVR
;
3332 switch (bfd_get_mach (abfd
))
3335 case 0: i_ehdrp
->e_machine
= EM_CYGNUS_V850
; break;
3339 i_ehdrp
->e_machine
= EM_CYGNUS_ARC
;
3342 i_ehdrp
->e_machine
= EM_ARM
;
3345 i_ehdrp
->e_machine
= EM_CYGNUS_M32R
;
3347 case bfd_arch_mn10200
:
3348 i_ehdrp
->e_machine
= EM_CYGNUS_MN10200
;
3350 case bfd_arch_mn10300
:
3351 i_ehdrp
->e_machine
= EM_CYGNUS_MN10300
;
3354 i_ehdrp
->e_machine
= EM_PJ
;
3356 /* also note that EM_M32, AT&T WE32100 is unknown to bfd */
3358 i_ehdrp
->e_machine
= EM_NONE
;
3360 i_ehdrp
->e_version
= bed
->s
->ev_current
;
3361 i_ehdrp
->e_ehsize
= bed
->s
->sizeof_ehdr
;
3363 /* no program header, for now. */
3364 i_ehdrp
->e_phoff
= 0;
3365 i_ehdrp
->e_phentsize
= 0;
3366 i_ehdrp
->e_phnum
= 0;
3368 /* each bfd section is section header entry */
3369 i_ehdrp
->e_entry
= bfd_get_start_address (abfd
);
3370 i_ehdrp
->e_shentsize
= bed
->s
->sizeof_shdr
;
3372 /* if we're building an executable, we'll need a program header table */
3373 if (abfd
->flags
& EXEC_P
)
3375 /* it all happens later */
3377 i_ehdrp
->e_phentsize
= sizeof (Elf_External_Phdr
);
3379 /* elf_build_phdrs() returns a (NULL-terminated) array of
3380 Elf_Internal_Phdrs */
3381 i_phdrp
= elf_build_phdrs (abfd
, i_ehdrp
, i_shdrp
, &i_ehdrp
->e_phnum
);
3382 i_ehdrp
->e_phoff
= outbase
;
3383 outbase
+= i_ehdrp
->e_phentsize
* i_ehdrp
->e_phnum
;
3388 i_ehdrp
->e_phentsize
= 0;
3390 i_ehdrp
->e_phoff
= 0;
3393 elf_tdata (abfd
)->symtab_hdr
.sh_name
=
3394 (unsigned int) _bfd_stringtab_add (shstrtab
, ".symtab", true, false);
3395 elf_tdata (abfd
)->strtab_hdr
.sh_name
=
3396 (unsigned int) _bfd_stringtab_add (shstrtab
, ".strtab", true, false);
3397 elf_tdata (abfd
)->shstrtab_hdr
.sh_name
=
3398 (unsigned int) _bfd_stringtab_add (shstrtab
, ".shstrtab", true, false);
3399 if (elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
3400 || elf_tdata (abfd
)->symtab_hdr
.sh_name
== (unsigned int) -1
3401 || elf_tdata (abfd
)->shstrtab_hdr
.sh_name
== (unsigned int) -1)
3407 /* Assign file positions for all the reloc sections which are not part
3408 of the loadable file image. */
3411 _bfd_elf_assign_file_positions_for_relocs (abfd
)
3416 Elf_Internal_Shdr
**shdrpp
;
3418 off
= elf_tdata (abfd
)->next_file_pos
;
3420 for (i
= 1, shdrpp
= elf_elfsections (abfd
) + 1;
3421 i
< elf_elfheader (abfd
)->e_shnum
;
3424 Elf_Internal_Shdr
*shdrp
;
3427 if ((shdrp
->sh_type
== SHT_REL
|| shdrp
->sh_type
== SHT_RELA
)
3428 && shdrp
->sh_offset
== -1)
3429 off
= _bfd_elf_assign_file_position_for_section (shdrp
, off
, true);
3432 elf_tdata (abfd
)->next_file_pos
= off
;
3436 _bfd_elf_write_object_contents (abfd
)
3439 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3440 Elf_Internal_Ehdr
*i_ehdrp
;
3441 Elf_Internal_Shdr
**i_shdrp
;
3445 if (! abfd
->output_has_begun
3446 && ! _bfd_elf_compute_section_file_positions
3447 (abfd
, (struct bfd_link_info
*) NULL
))
3450 i_shdrp
= elf_elfsections (abfd
);
3451 i_ehdrp
= elf_elfheader (abfd
);
3454 bfd_map_over_sections (abfd
, bed
->s
->write_relocs
, &failed
);
3458 _bfd_elf_assign_file_positions_for_relocs (abfd
);
3460 /* After writing the headers, we need to write the sections too... */
3461 for (count
= 1; count
< i_ehdrp
->e_shnum
; count
++)
3463 if (bed
->elf_backend_section_processing
)
3464 (*bed
->elf_backend_section_processing
) (abfd
, i_shdrp
[count
]);
3465 if (i_shdrp
[count
]->contents
)
3467 if (bfd_seek (abfd
, i_shdrp
[count
]->sh_offset
, SEEK_SET
) != 0
3468 || (bfd_write (i_shdrp
[count
]->contents
, i_shdrp
[count
]->sh_size
,
3470 != i_shdrp
[count
]->sh_size
))
3475 /* Write out the section header names. */
3476 if (bfd_seek (abfd
, elf_tdata (abfd
)->shstrtab_hdr
.sh_offset
, SEEK_SET
) != 0
3477 || ! _bfd_stringtab_emit (abfd
, elf_shstrtab (abfd
)))
3480 if (bed
->elf_backend_final_write_processing
)
3481 (*bed
->elf_backend_final_write_processing
) (abfd
,
3482 elf_tdata (abfd
)->linker
);
3484 return bed
->s
->write_shdrs_and_ehdr (abfd
);
3488 _bfd_elf_write_corefile_contents (abfd
)
3491 /* Hopefully this can be done just like an object file. */
3492 return _bfd_elf_write_object_contents (abfd
);
3494 /* given a section, search the header to find them... */
3496 _bfd_elf_section_from_bfd_section (abfd
, asect
)
3500 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
3501 Elf_Internal_Shdr
**i_shdrp
= elf_elfsections (abfd
);
3503 Elf_Internal_Shdr
*hdr
;
3504 int maxindex
= elf_elfheader (abfd
)->e_shnum
;
3506 for (index
= 0; index
< maxindex
; index
++)
3508 hdr
= i_shdrp
[index
];
3509 if (hdr
->bfd_section
== asect
)
3513 if (bed
->elf_backend_section_from_bfd_section
)
3515 for (index
= 0; index
< maxindex
; index
++)
3519 hdr
= i_shdrp
[index
];
3521 if ((*bed
->elf_backend_section_from_bfd_section
)
3522 (abfd
, hdr
, asect
, &retval
))
3527 if (bfd_is_abs_section (asect
))
3529 if (bfd_is_com_section (asect
))
3531 if (bfd_is_und_section (asect
))
3534 bfd_set_error (bfd_error_nonrepresentable_section
);
3539 /* Given a BFD symbol, return the index in the ELF symbol table, or -1
3543 _bfd_elf_symbol_from_bfd_symbol (abfd
, asym_ptr_ptr
)
3545 asymbol
**asym_ptr_ptr
;
3547 asymbol
*asym_ptr
= *asym_ptr_ptr
;
3549 flagword flags
= asym_ptr
->flags
;
3551 /* When gas creates relocations against local labels, it creates its
3552 own symbol for the section, but does put the symbol into the
3553 symbol chain, so udata is 0. When the linker is generating
3554 relocatable output, this section symbol may be for one of the
3555 input sections rather than the output section. */
3556 if (asym_ptr
->udata
.i
== 0
3557 && (flags
& BSF_SECTION_SYM
)
3558 && asym_ptr
->section
)
3562 if (asym_ptr
->section
->output_section
!= NULL
)
3563 indx
= asym_ptr
->section
->output_section
->index
;
3565 indx
= asym_ptr
->section
->index
;
3566 if (elf_section_syms (abfd
)[indx
])
3567 asym_ptr
->udata
.i
= elf_section_syms (abfd
)[indx
]->udata
.i
;
3570 idx
= asym_ptr
->udata
.i
;
3574 /* This case can occur when using --strip-symbol on a symbol
3575 which is used in a relocation entry. */
3576 (*_bfd_error_handler
)
3577 (_("%s: symbol `%s' required but not present"),
3578 bfd_get_filename (abfd
), bfd_asymbol_name (asym_ptr
));
3579 bfd_set_error (bfd_error_no_symbols
);
3586 _("elf_symbol_from_bfd_symbol 0x%.8lx, name = %s, sym num = %d, flags = 0x%.8lx%s\n"),
3587 (long) asym_ptr
, asym_ptr
->name
, idx
, flags
,
3588 elf_symbol_flags (flags
));
3596 /* Copy private BFD data. This copies any program header information. */
3599 copy_private_bfd_data (ibfd
, obfd
)
3603 Elf_Internal_Ehdr
*iehdr
;
3604 struct elf_segment_map
*mfirst
;
3605 struct elf_segment_map
**pm
;
3606 struct elf_segment_map
*m
;
3607 Elf_Internal_Phdr
*p
;
3609 unsigned int num_segments
;
3610 boolean phdr_included
= false;
3612 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
3613 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
3616 if (elf_tdata (ibfd
)->phdr
== NULL
)
3619 iehdr
= elf_elfheader (ibfd
);
3624 num_segments
= elf_elfheader (ibfd
)->e_phnum
;
3626 #define IS_CONTAINED_BY(addr, len, bottom, phdr) \
3627 ((addr) >= (bottom) \
3628 && ( ((addr) + (len)) <= ((bottom) + (phdr)->p_memsz) \
3629 || ((addr) + (len)) <= ((bottom) + (phdr)->p_filesz)))
3631 /* Special case: corefile "NOTE" section containing regs, prpsinfo etc. */
3633 #define IS_COREFILE_NOTE(p, s) \
3634 (p->p_type == PT_NOTE \
3635 && bfd_get_format (ibfd) == bfd_core \
3636 && s->vma == 0 && s->lma == 0 \
3637 && (bfd_vma) s->filepos >= p->p_offset \
3638 && (bfd_vma) s->filepos + s->_raw_size \
3639 <= p->p_offset + p->p_filesz)
3641 /* The complicated case when p_vaddr is 0 is to handle the Solaris
3642 linker, which generates a PT_INTERP section with p_vaddr and
3643 p_memsz set to 0. */
3645 #define IS_SOLARIS_PT_INTERP(p, s) \
3647 && p->p_filesz > 0 \
3648 && (s->flags & SEC_HAS_CONTENTS) != 0 \
3649 && s->_raw_size > 0 \
3650 && (bfd_vma) s->filepos >= p->p_offset \
3651 && ((bfd_vma) s->filepos + s->_raw_size \
3652 <= p->p_offset + p->p_filesz))
3654 /* Scan through the segments specified in the program header
3655 of the input BFD. */
3656 for (i
= 0, p
= elf_tdata (ibfd
)->phdr
; i
< num_segments
; i
++, p
++)
3660 asection
**sections
;
3663 bfd_vma matching_lma
;
3664 bfd_vma suggested_lma
;
3667 /* For each section in the input BFD, decide if it should be
3668 included in the current segment. A section will be included
3669 if it is within the address space of the segment, and it is
3670 an allocated segment, and there is an output section
3671 associated with it. */
3673 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
3674 if (s
->output_section
!= NULL
)
3676 if ((IS_CONTAINED_BY (s
->vma
, s
->_raw_size
, p
->p_vaddr
, p
)
3677 || IS_SOLARIS_PT_INTERP (p
, s
))
3678 && (s
->flags
& SEC_ALLOC
) != 0)
3680 else if (IS_COREFILE_NOTE (p
, s
))
3684 /* Allocate a segment map big enough to contain all of the
3685 sections we have selected. */
3686 m
= ((struct elf_segment_map
*)
3688 (sizeof (struct elf_segment_map
)
3689 + ((size_t) csecs
- 1) * sizeof (asection
*))));
3693 /* Initialise the fields of the segment map. Default to
3694 using the physical address of the segment in the input BFD. */
3696 m
->p_type
= p
->p_type
;
3697 m
->p_flags
= p
->p_flags
;
3698 m
->p_flags_valid
= 1;
3699 m
->p_paddr
= p
->p_paddr
;
3700 m
->p_paddr_valid
= 1;
3702 /* Determine if this segment contains the ELF file header
3703 and if it contains the program headers themselves. */
3704 m
->includes_filehdr
= (p
->p_offset
== 0
3705 && p
->p_filesz
>= iehdr
->e_ehsize
);
3707 m
->includes_phdrs
= 0;
3709 if (! phdr_included
|| p
->p_type
!= PT_LOAD
)
3712 (p
->p_offset
<= (bfd_vma
) iehdr
->e_phoff
3713 && (p
->p_offset
+ p
->p_filesz
3714 >= ((bfd_vma
) iehdr
->e_phoff
3715 + iehdr
->e_phnum
* iehdr
->e_phentsize
)));
3716 if (p
->p_type
== PT_LOAD
&& m
->includes_phdrs
)
3717 phdr_included
= true;
3722 /* Special segments, such as the PT_PHDR segment, may contain
3723 no sections, but ordinary, loadable segments should contain
3726 if (p
->p_type
== PT_LOAD
)
3728 (_("%s: warning: Empty loadable segment detected\n"),
3729 bfd_get_filename (ibfd
));
3738 /* Now scan the sections in the input BFD again and attempt
3739 to add their corresponding output sections to the segment map.
3740 The problem here is how to handle an output section which has
3741 been moved (ie had its LMA changed). There are four possibilities:
3743 1. None of the sections have been moved.
3744 In this case we can continue to use the segment LMA from the
3747 2. All of the sections have been moved by the same amount.
3748 In this case we can change the segment's LMA to match the LMA
3749 of the first section.
3751 3. Some of the sections have been moved, others have not.
3752 In this case those sections which have not been moved can be
3753 placed in the current segment which will have to have its size,
3754 and possibly its LMA changed, and a new segment or segments will
3755 have to be created to contain the other sections.
3757 4. The sections have been moved, but not be the same amount.
3758 In this case we can change the segment's LMA to match the LMA
3759 of the first section and we will have to create a new segment
3760 or segments to contain the other sections.
3762 In order to save time, we allocate an array to hold the section
3763 pointers that we are interested in. As these sections get assigned
3764 to a segment, they are removed from this array. */
3766 sections
= (asection
**) bfd_malloc (sizeof (asection
*) * csecs
);
3767 if (sections
== NULL
)
3770 /* Step One: Scan for segment vs section LMA conflicts.
3771 Also add the sections to the section array allocated above.
3772 Also add the sections to the current segment. In the common
3773 case, where the sections have not been moved, this means that
3774 we have completely filled the segment, and there is nothing
3781 for (j
= 0, s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
3783 os
= s
->output_section
;
3785 if ((((IS_CONTAINED_BY (s
->vma
, s
->_raw_size
, p
->p_vaddr
, p
)
3786 || IS_SOLARIS_PT_INTERP (p
, s
))
3787 && (s
->flags
& SEC_ALLOC
) != 0)
3788 || IS_COREFILE_NOTE (p
, s
))
3793 /* The Solaris native linker always sets p_paddr to 0.
3794 We try to catch that case here, and set it to the
3800 && (os
->vma
== (p
->p_vaddr
3801 + (m
->includes_filehdr
3804 + (m
->includes_phdrs
3805 ? iehdr
->e_phnum
* iehdr
->e_phentsize
3807 m
->p_paddr
= p
->p_vaddr
;
3809 /* Match up the physical address of the segment with the
3810 LMA address of the output section. */
3811 if (IS_CONTAINED_BY (os
->lma
, os
->_raw_size
, m
->p_paddr
, p
)
3812 || IS_COREFILE_NOTE (p
, s
))
3814 if (matching_lma
== 0)
3815 matching_lma
= os
->lma
;
3817 /* We assume that if the section fits within the segment
3818 that it does not overlap any other section within that
3820 m
->sections
[isec
++] = os
;
3822 else if (suggested_lma
== 0)
3823 suggested_lma
= os
->lma
;
3827 BFD_ASSERT (j
== csecs
);
3829 /* Step Two: Adjust the physical address of the current segment,
3833 /* All of the sections fitted within the segment as currently
3834 specified. This is the default case. Add the segment to
3835 the list of built segments and carry on to process the next
3836 program header in the input BFD. */
3846 if (matching_lma
!= 0)
3848 /* At least one section fits inside the current segment.
3849 Keep it, but modify its physical address to match the
3850 LMA of the first section that fitted. */
3852 m
->p_paddr
= matching_lma
;
3856 /* None of the sections fitted inside the current segment.
3857 Change the current segment's physical address to match
3858 the LMA of the first section. */
3860 m
->p_paddr
= suggested_lma
;
3863 /* Offset the segment physical address from the lma to allow
3864 for space taken up by elf headers. */
3865 if (m
->includes_filehdr
)
3866 m
->p_paddr
-= iehdr
->e_ehsize
;
3868 if (m
->includes_phdrs
)
3869 m
->p_paddr
-= iehdr
->e_phnum
* iehdr
->e_phentsize
;
3872 /* Step Three: Loop over the sections again, this time assigning
3873 those that fit to the current segment and remvoing them from the
3874 sections array; but making sure not to leave large gaps. Once all
3875 possible sections have been assigned to the current segment it is
3876 added to the list of built segments and if sections still remain
3877 to be assigned, a new segment is constructed before repeating
3885 /* Fill the current segment with sections that fit. */
3886 for (j
= 0; j
< csecs
; j
++)
3893 os
= s
->output_section
;
3895 if (IS_CONTAINED_BY (os
->lma
, os
->_raw_size
, m
->p_paddr
, p
)
3896 || IS_COREFILE_NOTE (p
, s
))
3900 /* If the first section in a segment does not start at
3901 the beginning of the segment, then something is wrong. */
3902 if (os
->lma
!= (m
->p_paddr
3903 + (m
->includes_filehdr
3904 ? iehdr
->e_ehsize
: 0)
3905 + (m
->includes_phdrs
3906 ? iehdr
->e_phnum
* iehdr
->e_phentsize
3912 asection
* prev_sec
;
3913 bfd_vma maxpagesize
;
3915 prev_sec
= m
->sections
[m
->count
- 1];
3916 maxpagesize
= get_elf_backend_data (obfd
)->maxpagesize
;
3918 /* If the gap between the end of the previous section
3919 and the start of this section is more than maxpagesize
3920 then we need to start a new segment. */
3921 if (BFD_ALIGN (prev_sec
->lma
+ prev_sec
->_raw_size
, maxpagesize
)
3922 < BFD_ALIGN (os
->lma
, maxpagesize
))
3924 if (suggested_lma
== 0)
3925 suggested_lma
= os
->lma
;
3931 m
->sections
[m
->count
++] = os
;
3935 else if (suggested_lma
== 0)
3936 suggested_lma
= os
->lma
;
3939 BFD_ASSERT (m
->count
> 0);
3941 /* Add the current segment to the list of built segments. */
3947 /* We still have not allocated all of the sections to
3948 segments. Create a new segment here, initialise it
3949 and carry on looping. */
3951 m
= ((struct elf_segment_map
*)
3953 (sizeof (struct elf_segment_map
)
3954 + ((size_t) csecs
- 1) * sizeof (asection
*))));
3958 /* Initialise the fields of the segment map. Set the physical
3959 physical address to the LMA of the first section that has
3960 not yet been assigned. */
3963 m
->p_type
= p
->p_type
;
3964 m
->p_flags
= p
->p_flags
;
3965 m
->p_flags_valid
= 1;
3966 m
->p_paddr
= suggested_lma
;
3967 m
->p_paddr_valid
= 1;
3968 m
->includes_filehdr
= 0;
3969 m
->includes_phdrs
= 0;
3972 while (isec
< csecs
);
3977 /* The Solaris linker creates program headers in which all the
3978 p_paddr fields are zero. When we try to objcopy or strip such a
3979 file, we get confused. Check for this case, and if we find it
3980 reset the p_paddr_valid fields. */
3981 for (m
= mfirst
; m
!= NULL
; m
= m
->next
)
3982 if (m
->p_paddr
!= 0)
3986 for (m
= mfirst
; m
!= NULL
; m
= m
->next
)
3987 m
->p_paddr_valid
= 0;
3990 elf_tdata (obfd
)->segment_map
= mfirst
;
3993 /* Final Step: Sort the segments into ascending order of physical address. */
3996 struct elf_segment_map
* prev
;
3999 for (m
= mfirst
->next
; m
!= NULL
; prev
= m
, m
= m
->next
)
4001 /* Yes I know - its a bubble sort....*/
4002 if (m
->next
!= NULL
&& (m
->next
->p_paddr
< m
->p_paddr
))
4004 /* swap m and m->next */
4005 prev
->next
= m
->next
;
4006 m
->next
= m
->next
->next
;
4007 prev
->next
->next
= m
;
4016 #undef IS_CONTAINED_BY
4017 #undef IS_SOLARIS_PT_INTERP
4018 #undef IS_COREFILE_NOTE
4022 /* Copy private section information. This copies over the entsize
4023 field, and sometimes the info field. */
4026 _bfd_elf_copy_private_section_data (ibfd
, isec
, obfd
, osec
)
4032 Elf_Internal_Shdr
*ihdr
, *ohdr
;
4034 if (ibfd
->xvec
->flavour
!= bfd_target_elf_flavour
4035 || obfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
4038 /* Copy over private BFD data if it has not already been copied.
4039 This must be done here, rather than in the copy_private_bfd_data
4040 entry point, because the latter is called after the section
4041 contents have been set, which means that the program headers have
4042 already been worked out. */
4043 if (elf_tdata (obfd
)->segment_map
== NULL
4044 && elf_tdata (ibfd
)->phdr
!= NULL
)
4048 /* Only set up the segments if there are no more SEC_ALLOC
4049 sections. FIXME: This won't do the right thing if objcopy is
4050 used to remove the last SEC_ALLOC section, since objcopy
4051 won't call this routine in that case. */
4052 for (s
= isec
->next
; s
!= NULL
; s
= s
->next
)
4053 if ((s
->flags
& SEC_ALLOC
) != 0)
4057 if (! copy_private_bfd_data (ibfd
, obfd
))
4062 ihdr
= &elf_section_data (isec
)->this_hdr
;
4063 ohdr
= &elf_section_data (osec
)->this_hdr
;
4065 ohdr
->sh_entsize
= ihdr
->sh_entsize
;
4067 if (ihdr
->sh_type
== SHT_SYMTAB
4068 || ihdr
->sh_type
== SHT_DYNSYM
4069 || ihdr
->sh_type
== SHT_GNU_verneed
4070 || ihdr
->sh_type
== SHT_GNU_verdef
)
4071 ohdr
->sh_info
= ihdr
->sh_info
;
4073 elf_section_data (osec
)->use_rela_p
4074 = elf_section_data (isec
)->use_rela_p
;
4079 /* Copy private symbol information. If this symbol is in a section
4080 which we did not map into a BFD section, try to map the section
4081 index correctly. We use special macro definitions for the mapped
4082 section indices; these definitions are interpreted by the
4083 swap_out_syms function. */
4085 #define MAP_ONESYMTAB (SHN_LORESERVE - 1)
4086 #define MAP_DYNSYMTAB (SHN_LORESERVE - 2)
4087 #define MAP_STRTAB (SHN_LORESERVE - 3)
4088 #define MAP_SHSTRTAB (SHN_LORESERVE - 4)
4091 _bfd_elf_copy_private_symbol_data (ibfd
, isymarg
, obfd
, osymarg
)
4097 elf_symbol_type
*isym
, *osym
;
4099 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
4100 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
4103 isym
= elf_symbol_from (ibfd
, isymarg
);
4104 osym
= elf_symbol_from (obfd
, osymarg
);
4108 && bfd_is_abs_section (isym
->symbol
.section
))
4112 shndx
= isym
->internal_elf_sym
.st_shndx
;
4113 if (shndx
== elf_onesymtab (ibfd
))
4114 shndx
= MAP_ONESYMTAB
;
4115 else if (shndx
== elf_dynsymtab (ibfd
))
4116 shndx
= MAP_DYNSYMTAB
;
4117 else if (shndx
== elf_tdata (ibfd
)->strtab_section
)
4119 else if (shndx
== elf_tdata (ibfd
)->shstrtab_section
)
4120 shndx
= MAP_SHSTRTAB
;
4121 osym
->internal_elf_sym
.st_shndx
= shndx
;
4127 /* Swap out the symbols. */
4130 swap_out_syms (abfd
, sttp
, relocatable_p
)
4132 struct bfd_strtab_hash
**sttp
;
4135 struct elf_backend_data
*bed
= get_elf_backend_data (abfd
);
4137 if (!elf_map_symbols (abfd
))
4140 /* Dump out the symtabs. */
4142 int symcount
= bfd_get_symcount (abfd
);
4143 asymbol
**syms
= bfd_get_outsymbols (abfd
);
4144 struct bfd_strtab_hash
*stt
;
4145 Elf_Internal_Shdr
*symtab_hdr
;
4146 Elf_Internal_Shdr
*symstrtab_hdr
;
4147 char *outbound_syms
;
4150 stt
= _bfd_elf_stringtab_init ();
4154 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4155 symtab_hdr
->sh_type
= SHT_SYMTAB
;
4156 symtab_hdr
->sh_entsize
= bed
->s
->sizeof_sym
;
4157 symtab_hdr
->sh_size
= symtab_hdr
->sh_entsize
* (symcount
+ 1);
4158 symtab_hdr
->sh_info
= elf_num_locals (abfd
) + 1;
4159 symtab_hdr
->sh_addralign
= bed
->s
->file_align
;
4161 symstrtab_hdr
= &elf_tdata (abfd
)->strtab_hdr
;
4162 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
4164 outbound_syms
= bfd_alloc (abfd
,
4165 (1 + symcount
) * bed
->s
->sizeof_sym
);
4166 if (outbound_syms
== NULL
)
4168 symtab_hdr
->contents
= (PTR
) outbound_syms
;
4170 /* now generate the data (for "contents") */
4172 /* Fill in zeroth symbol and swap it out. */
4173 Elf_Internal_Sym sym
;
4179 sym
.st_shndx
= SHN_UNDEF
;
4180 bed
->s
->swap_symbol_out (abfd
, &sym
, (PTR
) outbound_syms
);
4181 outbound_syms
+= bed
->s
->sizeof_sym
;
4183 for (idx
= 0; idx
< symcount
; idx
++)
4185 Elf_Internal_Sym sym
;
4186 bfd_vma value
= syms
[idx
]->value
;
4187 elf_symbol_type
*type_ptr
;
4188 flagword flags
= syms
[idx
]->flags
;
4191 if (flags
& BSF_SECTION_SYM
)
4192 /* Section symbols have no names. */
4196 sym
.st_name
= (unsigned long) _bfd_stringtab_add (stt
,
4199 if (sym
.st_name
== (unsigned long) -1)
4203 type_ptr
= elf_symbol_from (abfd
, syms
[idx
]);
4205 if ((flags
& BSF_SECTION_SYM
) == 0
4206 && bfd_is_com_section (syms
[idx
]->section
))
4208 /* ELF common symbols put the alignment into the `value' field,
4209 and the size into the `size' field. This is backwards from
4210 how BFD handles it, so reverse it here. */
4211 sym
.st_size
= value
;
4212 if (type_ptr
== NULL
4213 || type_ptr
->internal_elf_sym
.st_value
== 0)
4214 sym
.st_value
= value
>= 16 ? 16 : (1 << bfd_log2 (value
));
4216 sym
.st_value
= type_ptr
->internal_elf_sym
.st_value
;
4217 sym
.st_shndx
= _bfd_elf_section_from_bfd_section
4218 (abfd
, syms
[idx
]->section
);
4222 asection
*sec
= syms
[idx
]->section
;
4225 if (sec
->output_section
)
4227 value
+= sec
->output_offset
;
4228 sec
= sec
->output_section
;
4230 /* Don't add in the section vma for relocatable output. */
4231 if (! relocatable_p
)
4233 sym
.st_value
= value
;
4234 sym
.st_size
= type_ptr
? type_ptr
->internal_elf_sym
.st_size
: 0;
4236 if (bfd_is_abs_section (sec
)
4238 && type_ptr
->internal_elf_sym
.st_shndx
!= 0)
4240 /* This symbol is in a real ELF section which we did
4241 not create as a BFD section. Undo the mapping done
4242 by copy_private_symbol_data. */
4243 shndx
= type_ptr
->internal_elf_sym
.st_shndx
;
4247 shndx
= elf_onesymtab (abfd
);
4250 shndx
= elf_dynsymtab (abfd
);
4253 shndx
= elf_tdata (abfd
)->strtab_section
;
4256 shndx
= elf_tdata (abfd
)->shstrtab_section
;
4264 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec
);
4270 /* Writing this would be a hell of a lot easier if
4271 we had some decent documentation on bfd, and
4272 knew what to expect of the library, and what to
4273 demand of applications. For example, it
4274 appears that `objcopy' might not set the
4275 section of a symbol to be a section that is
4276 actually in the output file. */
4277 sec2
= bfd_get_section_by_name (abfd
, sec
->name
);
4278 BFD_ASSERT (sec2
!= 0);
4279 shndx
= _bfd_elf_section_from_bfd_section (abfd
, sec2
);
4280 BFD_ASSERT (shndx
!= -1);
4284 sym
.st_shndx
= shndx
;
4287 if ((flags
& BSF_FUNCTION
) != 0)
4289 else if ((flags
& BSF_OBJECT
) != 0)
4294 /* Processor-specific types */
4295 if (type_ptr
!= NULL
4296 && bed
->elf_backend_get_symbol_type
)
4297 type
= (*bed
->elf_backend_get_symbol_type
) (&type_ptr
->internal_elf_sym
, type
);
4299 if (flags
& BSF_SECTION_SYM
)
4300 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_SECTION
);
4301 else if (bfd_is_com_section (syms
[idx
]->section
))
4302 sym
.st_info
= ELF_ST_INFO (STB_GLOBAL
, type
);
4303 else if (bfd_is_und_section (syms
[idx
]->section
))
4304 sym
.st_info
= ELF_ST_INFO (((flags
& BSF_WEAK
)
4308 else if (flags
& BSF_FILE
)
4309 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_FILE
);
4312 int bind
= STB_LOCAL
;
4314 if (flags
& BSF_LOCAL
)
4316 else if (flags
& BSF_WEAK
)
4318 else if (flags
& BSF_GLOBAL
)
4321 sym
.st_info
= ELF_ST_INFO (bind
, type
);
4324 if (type_ptr
!= NULL
)
4325 sym
.st_other
= type_ptr
->internal_elf_sym
.st_other
;
4329 bed
->s
->swap_symbol_out (abfd
, &sym
, (PTR
) outbound_syms
);
4330 outbound_syms
+= bed
->s
->sizeof_sym
;
4334 symstrtab_hdr
->sh_size
= _bfd_stringtab_size (stt
);
4335 symstrtab_hdr
->sh_type
= SHT_STRTAB
;
4337 symstrtab_hdr
->sh_flags
= 0;
4338 symstrtab_hdr
->sh_addr
= 0;
4339 symstrtab_hdr
->sh_entsize
= 0;
4340 symstrtab_hdr
->sh_link
= 0;
4341 symstrtab_hdr
->sh_info
= 0;
4342 symstrtab_hdr
->sh_addralign
= 1;
4348 /* Return the number of bytes required to hold the symtab vector.
4350 Note that we base it on the count plus 1, since we will null terminate
4351 the vector allocated based on this size. However, the ELF symbol table
4352 always has a dummy entry as symbol #0, so it ends up even. */
4355 _bfd_elf_get_symtab_upper_bound (abfd
)
4360 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4362 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
4363 symtab_size
= (symcount
- 1 + 1) * (sizeof (asymbol
*));
4369 _bfd_elf_get_dynamic_symtab_upper_bound (abfd
)
4374 Elf_Internal_Shdr
*hdr
= &elf_tdata (abfd
)->dynsymtab_hdr
;
4376 if (elf_dynsymtab (abfd
) == 0)
4378 bfd_set_error (bfd_error_invalid_operation
);
4382 symcount
= hdr
->sh_size
/ get_elf_backend_data (abfd
)->s
->sizeof_sym
;
4383 symtab_size
= (symcount
- 1 + 1) * (sizeof (asymbol
*));
4389 _bfd_elf_get_reloc_upper_bound (abfd
, asect
)
4390 bfd
*abfd ATTRIBUTE_UNUSED
;
4393 return (asect
->reloc_count
+ 1) * sizeof (arelent
*);
4396 /* Canonicalize the relocs. */
4399 _bfd_elf_canonicalize_reloc (abfd
, section
, relptr
, symbols
)
4408 if (! get_elf_backend_data (abfd
)->s
->slurp_reloc_table (abfd
,
4414 tblptr
= section
->relocation
;
4415 for (i
= 0; i
< section
->reloc_count
; i
++)
4416 *relptr
++ = tblptr
++;
4420 return section
->reloc_count
;
4424 _bfd_elf_get_symtab (abfd
, alocation
)
4426 asymbol
**alocation
;
4428 long symcount
= get_elf_backend_data (abfd
)->s
->slurp_symbol_table
4429 (abfd
, alocation
, false);
4432 bfd_get_symcount (abfd
) = symcount
;
4437 _bfd_elf_canonicalize_dynamic_symtab (abfd
, alocation
)
4439 asymbol
**alocation
;
4441 return get_elf_backend_data (abfd
)->s
->slurp_symbol_table
4442 (abfd
, alocation
, true);
4445 /* Return the size required for the dynamic reloc entries. Any
4446 section that was actually installed in the BFD, and has type
4447 SHT_REL or SHT_RELA, and uses the dynamic symbol table, is
4448 considered to be a dynamic reloc section. */
4451 _bfd_elf_get_dynamic_reloc_upper_bound (abfd
)
4457 if (elf_dynsymtab (abfd
) == 0)
4459 bfd_set_error (bfd_error_invalid_operation
);
4463 ret
= sizeof (arelent
*);
4464 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
4465 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
4466 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_REL
4467 || elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
4468 ret
+= ((s
->_raw_size
/ elf_section_data (s
)->this_hdr
.sh_entsize
)
4469 * sizeof (arelent
*));
4474 /* Canonicalize the dynamic relocation entries. Note that we return
4475 the dynamic relocations as a single block, although they are
4476 actually associated with particular sections; the interface, which
4477 was designed for SunOS style shared libraries, expects that there
4478 is only one set of dynamic relocs. Any section that was actually
4479 installed in the BFD, and has type SHT_REL or SHT_RELA, and uses
4480 the dynamic symbol table, is considered to be a dynamic reloc
4484 _bfd_elf_canonicalize_dynamic_reloc (abfd
, storage
, syms
)
4489 boolean (*slurp_relocs
) PARAMS ((bfd
*, asection
*, asymbol
**, boolean
));
4493 if (elf_dynsymtab (abfd
) == 0)
4495 bfd_set_error (bfd_error_invalid_operation
);
4499 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
4501 for (s
= abfd
->sections
; s
!= NULL
; s
= s
->next
)
4503 if (elf_section_data (s
)->this_hdr
.sh_link
== elf_dynsymtab (abfd
)
4504 && (elf_section_data (s
)->this_hdr
.sh_type
== SHT_REL
4505 || elf_section_data (s
)->this_hdr
.sh_type
== SHT_RELA
))
4510 if (! (*slurp_relocs
) (abfd
, s
, syms
, true))
4512 count
= s
->_raw_size
/ elf_section_data (s
)->this_hdr
.sh_entsize
;
4514 for (i
= 0; i
< count
; i
++)
4525 /* Read in the version information. */
4528 _bfd_elf_slurp_version_tables (abfd
)
4531 bfd_byte
*contents
= NULL
;
4533 if (elf_dynverdef (abfd
) != 0)
4535 Elf_Internal_Shdr
*hdr
;
4536 Elf_External_Verdef
*everdef
;
4537 Elf_Internal_Verdef
*iverdef
;
4538 Elf_Internal_Verdef
*iverdefarr
;
4539 Elf_Internal_Verdef iverdefmem
;
4541 unsigned int maxidx
;
4543 hdr
= &elf_tdata (abfd
)->dynverdef_hdr
;
4545 contents
= (bfd_byte
*) bfd_malloc (hdr
->sh_size
);
4546 if (contents
== NULL
)
4548 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
4549 || bfd_read ((PTR
) contents
, 1, hdr
->sh_size
, abfd
) != hdr
->sh_size
)
4552 /* We know the number of entries in the section but not the maximum
4553 index. Therefore we have to run through all entries and find
4555 everdef
= (Elf_External_Verdef
*) contents
;
4557 for (i
= 0; i
< hdr
->sh_info
; ++i
)
4559 _bfd_elf_swap_verdef_in (abfd
, everdef
, &iverdefmem
);
4561 if ((iverdefmem
.vd_ndx
& VERSYM_VERSION
) > maxidx
)
4562 maxidx
= iverdefmem
.vd_ndx
& VERSYM_VERSION
;
4564 everdef
= ((Elf_External_Verdef
*)
4565 ((bfd_byte
*) everdef
+ iverdefmem
.vd_next
));
4568 elf_tdata (abfd
)->verdef
=
4569 ((Elf_Internal_Verdef
*)
4570 bfd_zalloc (abfd
, maxidx
* sizeof (Elf_Internal_Verdef
)));
4571 if (elf_tdata (abfd
)->verdef
== NULL
)
4574 elf_tdata (abfd
)->cverdefs
= maxidx
;
4576 everdef
= (Elf_External_Verdef
*) contents
;
4577 iverdefarr
= elf_tdata (abfd
)->verdef
;
4578 for (i
= 0; i
< hdr
->sh_info
; i
++)
4580 Elf_External_Verdaux
*everdaux
;
4581 Elf_Internal_Verdaux
*iverdaux
;
4584 _bfd_elf_swap_verdef_in (abfd
, everdef
, &iverdefmem
);
4586 iverdef
= &iverdefarr
[(iverdefmem
.vd_ndx
& VERSYM_VERSION
) - 1];
4587 memcpy (iverdef
, &iverdefmem
, sizeof (Elf_Internal_Verdef
));
4589 iverdef
->vd_bfd
= abfd
;
4591 iverdef
->vd_auxptr
= ((Elf_Internal_Verdaux
*)
4594 * sizeof (Elf_Internal_Verdaux
))));
4595 if (iverdef
->vd_auxptr
== NULL
)
4598 everdaux
= ((Elf_External_Verdaux
*)
4599 ((bfd_byte
*) everdef
+ iverdef
->vd_aux
));
4600 iverdaux
= iverdef
->vd_auxptr
;
4601 for (j
= 0; j
< iverdef
->vd_cnt
; j
++, iverdaux
++)
4603 _bfd_elf_swap_verdaux_in (abfd
, everdaux
, iverdaux
);
4605 iverdaux
->vda_nodename
=
4606 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
4607 iverdaux
->vda_name
);
4608 if (iverdaux
->vda_nodename
== NULL
)
4611 if (j
+ 1 < iverdef
->vd_cnt
)
4612 iverdaux
->vda_nextptr
= iverdaux
+ 1;
4614 iverdaux
->vda_nextptr
= NULL
;
4616 everdaux
= ((Elf_External_Verdaux
*)
4617 ((bfd_byte
*) everdaux
+ iverdaux
->vda_next
));
4620 iverdef
->vd_nodename
= iverdef
->vd_auxptr
->vda_nodename
;
4622 if (i
+ 1 < hdr
->sh_info
)
4623 iverdef
->vd_nextdef
= iverdef
+ 1;
4625 iverdef
->vd_nextdef
= NULL
;
4627 everdef
= ((Elf_External_Verdef
*)
4628 ((bfd_byte
*) everdef
+ iverdef
->vd_next
));
4635 if (elf_dynverref (abfd
) != 0)
4637 Elf_Internal_Shdr
*hdr
;
4638 Elf_External_Verneed
*everneed
;
4639 Elf_Internal_Verneed
*iverneed
;
4642 hdr
= &elf_tdata (abfd
)->dynverref_hdr
;
4644 elf_tdata (abfd
)->verref
=
4645 ((Elf_Internal_Verneed
*)
4646 bfd_zalloc (abfd
, hdr
->sh_info
* sizeof (Elf_Internal_Verneed
)));
4647 if (elf_tdata (abfd
)->verref
== NULL
)
4650 elf_tdata (abfd
)->cverrefs
= hdr
->sh_info
;
4652 contents
= (bfd_byte
*) bfd_malloc (hdr
->sh_size
);
4653 if (contents
== NULL
)
4655 if (bfd_seek (abfd
, hdr
->sh_offset
, SEEK_SET
) != 0
4656 || bfd_read ((PTR
) contents
, 1, hdr
->sh_size
, abfd
) != hdr
->sh_size
)
4659 everneed
= (Elf_External_Verneed
*) contents
;
4660 iverneed
= elf_tdata (abfd
)->verref
;
4661 for (i
= 0; i
< hdr
->sh_info
; i
++, iverneed
++)
4663 Elf_External_Vernaux
*evernaux
;
4664 Elf_Internal_Vernaux
*ivernaux
;
4667 _bfd_elf_swap_verneed_in (abfd
, everneed
, iverneed
);
4669 iverneed
->vn_bfd
= abfd
;
4671 iverneed
->vn_filename
=
4672 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
4674 if (iverneed
->vn_filename
== NULL
)
4677 iverneed
->vn_auxptr
=
4678 ((Elf_Internal_Vernaux
*)
4680 iverneed
->vn_cnt
* sizeof (Elf_Internal_Vernaux
)));
4682 evernaux
= ((Elf_External_Vernaux
*)
4683 ((bfd_byte
*) everneed
+ iverneed
->vn_aux
));
4684 ivernaux
= iverneed
->vn_auxptr
;
4685 for (j
= 0; j
< iverneed
->vn_cnt
; j
++, ivernaux
++)
4687 _bfd_elf_swap_vernaux_in (abfd
, evernaux
, ivernaux
);
4689 ivernaux
->vna_nodename
=
4690 bfd_elf_string_from_elf_section (abfd
, hdr
->sh_link
,
4691 ivernaux
->vna_name
);
4692 if (ivernaux
->vna_nodename
== NULL
)
4695 if (j
+ 1 < iverneed
->vn_cnt
)
4696 ivernaux
->vna_nextptr
= ivernaux
+ 1;
4698 ivernaux
->vna_nextptr
= NULL
;
4700 evernaux
= ((Elf_External_Vernaux
*)
4701 ((bfd_byte
*) evernaux
+ ivernaux
->vna_next
));
4704 if (i
+ 1 < hdr
->sh_info
)
4705 iverneed
->vn_nextref
= iverneed
+ 1;
4707 iverneed
->vn_nextref
= NULL
;
4709 everneed
= ((Elf_External_Verneed
*)
4710 ((bfd_byte
*) everneed
+ iverneed
->vn_next
));
4720 if (contents
== NULL
)
4726 _bfd_elf_make_empty_symbol (abfd
)
4729 elf_symbol_type
*newsym
;
4731 newsym
= (elf_symbol_type
*) bfd_zalloc (abfd
, sizeof (elf_symbol_type
));
4736 newsym
->symbol
.the_bfd
= abfd
;
4737 return &newsym
->symbol
;
4742 _bfd_elf_get_symbol_info (ignore_abfd
, symbol
, ret
)
4743 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
4747 bfd_symbol_info (symbol
, ret
);
4750 /* Return whether a symbol name implies a local symbol. Most targets
4751 use this function for the is_local_label_name entry point, but some
4755 _bfd_elf_is_local_label_name (abfd
, name
)
4756 bfd
*abfd ATTRIBUTE_UNUSED
;
4759 /* Normal local symbols start with ``.L''. */
4760 if (name
[0] == '.' && name
[1] == 'L')
4763 /* At least some SVR4 compilers (e.g., UnixWare 2.1 cc) generate
4764 DWARF debugging symbols starting with ``..''. */
4765 if (name
[0] == '.' && name
[1] == '.')
4768 /* gcc will sometimes generate symbols beginning with ``_.L_'' when
4769 emitting DWARF debugging output. I suspect this is actually a
4770 small bug in gcc (it calls ASM_OUTPUT_LABEL when it should call
4771 ASM_GENERATE_INTERNAL_LABEL, and this causes the leading
4772 underscore to be emitted on some ELF targets). For ease of use,
4773 we treat such symbols as local. */
4774 if (name
[0] == '_' && name
[1] == '.' && name
[2] == 'L' && name
[3] == '_')
4781 _bfd_elf_get_lineno (ignore_abfd
, symbol
)
4782 bfd
*ignore_abfd ATTRIBUTE_UNUSED
;
4783 asymbol
*symbol ATTRIBUTE_UNUSED
;
4790 _bfd_elf_set_arch_mach (abfd
, arch
, machine
)
4792 enum bfd_architecture arch
;
4793 unsigned long machine
;
4795 /* If this isn't the right architecture for this backend, and this
4796 isn't the generic backend, fail. */
4797 if (arch
!= get_elf_backend_data (abfd
)->arch
4798 && arch
!= bfd_arch_unknown
4799 && get_elf_backend_data (abfd
)->arch
!= bfd_arch_unknown
)
4802 return bfd_default_set_arch_mach (abfd
, arch
, machine
);
4805 /* Find the nearest line to a particular section and offset, for error
4809 _bfd_elf_find_nearest_line (abfd
,
4820 CONST
char **filename_ptr
;
4821 CONST
char **functionname_ptr
;
4822 unsigned int *line_ptr
;
4825 const char *filename
;
4830 if (_bfd_dwarf1_find_nearest_line (abfd
, section
, symbols
, offset
,
4831 filename_ptr
, functionname_ptr
,
4835 if (_bfd_dwarf2_find_nearest_line (abfd
, section
, symbols
, offset
,
4836 filename_ptr
, functionname_ptr
,
4840 if (! _bfd_stab_section_find_nearest_line (abfd
, symbols
, section
, offset
,
4841 &found
, filename_ptr
,
4842 functionname_ptr
, line_ptr
,
4843 &elf_tdata (abfd
)->line_info
))
4848 if (symbols
== NULL
)
4855 for (p
= symbols
; *p
!= NULL
; p
++)
4859 q
= (elf_symbol_type
*) *p
;
4861 if (bfd_get_section (&q
->symbol
) != section
)
4864 switch (ELF_ST_TYPE (q
->internal_elf_sym
.st_info
))
4869 filename
= bfd_asymbol_name (&q
->symbol
);
4873 if (q
->symbol
.section
== section
4874 && q
->symbol
.value
>= low_func
4875 && q
->symbol
.value
<= offset
)
4877 func
= (asymbol
*) q
;
4878 low_func
= q
->symbol
.value
;
4887 *filename_ptr
= filename
;
4888 *functionname_ptr
= bfd_asymbol_name (func
);
4894 _bfd_elf_sizeof_headers (abfd
, reloc
)
4900 ret
= get_elf_backend_data (abfd
)->s
->sizeof_ehdr
;
4902 ret
+= get_program_header_size (abfd
);
4907 _bfd_elf_set_section_contents (abfd
, section
, location
, offset
, count
)
4912 bfd_size_type count
;
4914 Elf_Internal_Shdr
*hdr
;
4916 if (! abfd
->output_has_begun
4917 && ! _bfd_elf_compute_section_file_positions
4918 (abfd
, (struct bfd_link_info
*) NULL
))
4921 hdr
= &elf_section_data (section
)->this_hdr
;
4923 if (bfd_seek (abfd
, hdr
->sh_offset
+ offset
, SEEK_SET
) == -1)
4925 if (bfd_write (location
, 1, count
, abfd
) != count
)
4932 _bfd_elf_no_info_to_howto (abfd
, cache_ptr
, dst
)
4933 bfd
*abfd ATTRIBUTE_UNUSED
;
4934 arelent
*cache_ptr ATTRIBUTE_UNUSED
;
4935 Elf_Internal_Rela
*dst ATTRIBUTE_UNUSED
;
4942 _bfd_elf_no_info_to_howto_rel (abfd
, cache_ptr
, dst
)
4945 Elf_Internal_Rel
*dst
;
4951 /* Try to convert a non-ELF reloc into an ELF one. */
4954 _bfd_elf_validate_reloc (abfd
, areloc
)
4958 /* Check whether we really have an ELF howto. */
4960 if ((*areloc
->sym_ptr_ptr
)->the_bfd
->xvec
!= abfd
->xvec
)
4962 bfd_reloc_code_real_type code
;
4963 reloc_howto_type
*howto
;
4965 /* Alien reloc: Try to determine its type to replace it with an
4966 equivalent ELF reloc. */
4968 if (areloc
->howto
->pc_relative
)
4970 switch (areloc
->howto
->bitsize
)
4973 code
= BFD_RELOC_8_PCREL
;
4976 code
= BFD_RELOC_12_PCREL
;
4979 code
= BFD_RELOC_16_PCREL
;
4982 code
= BFD_RELOC_24_PCREL
;
4985 code
= BFD_RELOC_32_PCREL
;
4988 code
= BFD_RELOC_64_PCREL
;
4994 howto
= bfd_reloc_type_lookup (abfd
, code
);
4996 if (areloc
->howto
->pcrel_offset
!= howto
->pcrel_offset
)
4998 if (howto
->pcrel_offset
)
4999 areloc
->addend
+= areloc
->address
;
5001 areloc
->addend
-= areloc
->address
; /* addend is unsigned!! */
5006 switch (areloc
->howto
->bitsize
)
5012 code
= BFD_RELOC_14
;
5015 code
= BFD_RELOC_16
;
5018 code
= BFD_RELOC_26
;
5021 code
= BFD_RELOC_32
;
5024 code
= BFD_RELOC_64
;
5030 howto
= bfd_reloc_type_lookup (abfd
, code
);
5034 areloc
->howto
= howto
;
5042 (*_bfd_error_handler
)
5043 (_("%s: unsupported relocation type %s"),
5044 bfd_get_filename (abfd
), areloc
->howto
->name
);
5045 bfd_set_error (bfd_error_bad_value
);
5050 _bfd_elf_close_and_cleanup (abfd
)
5053 if (bfd_get_format (abfd
) == bfd_object
)
5055 if (elf_shstrtab (abfd
) != NULL
)
5056 _bfd_stringtab_free (elf_shstrtab (abfd
));
5059 return _bfd_generic_close_and_cleanup (abfd
);
5062 /* For Rel targets, we encode meaningful data for BFD_RELOC_VTABLE_ENTRY
5063 in the relocation's offset. Thus we cannot allow any sort of sanity
5064 range-checking to interfere. There is nothing else to do in processing
5067 bfd_reloc_status_type
5068 _bfd_elf_rel_vtable_reloc_fn (abfd
, re
, symbol
, data
, is
, obfd
, errmsg
)
5069 bfd
*abfd ATTRIBUTE_UNUSED
;
5070 arelent
*re ATTRIBUTE_UNUSED
;
5071 struct symbol_cache_entry
*symbol ATTRIBUTE_UNUSED
;
5072 PTR data ATTRIBUTE_UNUSED
;
5073 asection
*is ATTRIBUTE_UNUSED
;
5074 bfd
*obfd ATTRIBUTE_UNUSED
;
5075 char **errmsg ATTRIBUTE_UNUSED
;
5077 return bfd_reloc_ok
;
5081 /* Elf core file support. Much of this only works on native
5082 toolchains, since we rely on knowing the
5083 machine-dependent procfs structure in order to pick
5084 out details about the corefile. */
5086 #ifdef HAVE_SYS_PROCFS_H
5087 # include <sys/procfs.h>
5091 /* Define offsetof for those systems which lack it. */
5094 # define offsetof(TYPE, MEMBER) ((unsigned long) &((TYPE *)0)->MEMBER)
5098 /* FIXME: this is kinda wrong, but it's what gdb wants. */
5101 elfcore_make_pid (abfd
)
5104 return ((elf_tdata (abfd
)->core_lwpid
<< 16)
5105 + (elf_tdata (abfd
)->core_pid
));
5109 /* If there isn't a section called NAME, make one, using
5110 data from SECT. Note, this function will generate a
5111 reference to NAME, so you shouldn't deallocate or
5115 elfcore_maybe_make_sect (abfd
, name
, sect
)
5122 if (bfd_get_section_by_name (abfd
, name
) != NULL
)
5125 sect2
= bfd_make_section (abfd
, name
);
5129 sect2
->_raw_size
= sect
->_raw_size
;
5130 sect2
->filepos
= sect
->filepos
;
5131 sect2
->flags
= sect
->flags
;
5132 sect2
->alignment_power
= sect
->alignment_power
;
5137 /* prstatus_t exists on:
5139 linux 2.[01] + glibc
5143 #if defined (HAVE_PRSTATUS_T)
5145 elfcore_grok_prstatus (abfd
, note
)
5147 Elf_Internal_Note
* note
;
5154 if (note
->descsz
== sizeof (prstatus_t
))
5158 raw_size
= sizeof (prstat
.pr_reg
);
5159 memcpy (&prstat
, note
->descdata
, sizeof (prstat
));
5161 elf_tdata (abfd
)->core_signal
= prstat
.pr_cursig
;
5162 elf_tdata (abfd
)->core_pid
= prstat
.pr_pid
;
5164 /* pr_who exists on:
5167 pr_who doesn't exist on:
5170 #if defined (HAVE_PRSTATUS_T_PR_WHO)
5171 elf_tdata (abfd
)->core_lwpid
= prstat
.pr_who
;
5174 #if defined (__sparcv9)
5175 else if (note
->descsz
== sizeof (prstatus32_t
))
5177 /* 64-bit host, 32-bit corefile */
5178 prstatus32_t prstat
;
5180 raw_size
= sizeof (prstat
.pr_reg
);
5181 memcpy (&prstat
, note
->descdata
, sizeof (prstat
));
5183 elf_tdata (abfd
)->core_signal
= prstat
.pr_cursig
;
5184 elf_tdata (abfd
)->core_pid
= prstat
.pr_pid
;
5186 /* pr_who exists on:
5189 pr_who doesn't exist on:
5192 #if defined (HAVE_PRSTATUS_T_PR_WHO)
5193 elf_tdata (abfd
)->core_lwpid
= prstat
.pr_who
;
5196 #endif /* __sparcv9 */
5199 /* Fail - we don't know how to handle any other
5200 note size (ie. data object type). */
5204 /* Make a ".reg/999" section. */
5206 sprintf (buf
, ".reg/%d", elfcore_make_pid (abfd
));
5207 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5212 sect
= bfd_make_section (abfd
, name
);
5216 if (note
->descsz
== sizeof (prstatus_t
))
5218 sect
->_raw_size
= raw_size
;
5219 sect
->filepos
= note
->descpos
+ offsetof (prstatus_t
, pr_reg
);
5221 #if defined (__sparcv9)
5222 else if (note
->descsz
== sizeof (prstatus32_t
))
5224 sect
->_raw_size
= raw_size
;
5225 sect
->filepos
= note
->descpos
+ offsetof (prstatus32_t
, pr_reg
);
5229 sect
->flags
= SEC_HAS_CONTENTS
;
5230 sect
->alignment_power
= 2;
5232 if (! elfcore_maybe_make_sect (abfd
, ".reg", sect
))
5237 #endif /* defined (HAVE_PRSTATUS_T) */
5240 /* Create a pseudosection containing the exact contents of NOTE. This
5241 actually creates up to two pseudosections:
5242 - For the single-threaded case, a section named NAME, unless
5243 such a section already exists.
5244 - For the multi-threaded case, a section named "NAME/PID", where
5245 PID is elfcore_make_pid (abfd).
5246 Both pseudosections have identical contents: the contents of NOTE. */
5249 elfcore_make_note_pseudosection (abfd
, name
, note
)
5252 Elf_Internal_Note
* note
;
5255 char *threaded_name
;
5258 /* Build the section name. */
5260 sprintf (buf
, "%s/%d", name
, elfcore_make_pid (abfd
));
5261 threaded_name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5262 if (threaded_name
== NULL
)
5264 strcpy (threaded_name
, buf
);
5266 sect
= bfd_make_section (abfd
, threaded_name
);
5269 sect
->_raw_size
= note
->descsz
;
5270 sect
->filepos
= note
->descpos
;
5271 sect
->flags
= SEC_HAS_CONTENTS
;
5272 sect
->alignment_power
= 2;
5274 if (! elfcore_maybe_make_sect (abfd
, name
, sect
))
5281 /* There isn't a consistent prfpregset_t across platforms,
5282 but it doesn't matter, because we don't have to pick this
5283 data structure apart. */
5285 elfcore_grok_prfpreg (abfd
, note
)
5287 Elf_Internal_Note
* note
;
5289 return elfcore_make_note_pseudosection (abfd
, ".reg2", note
);
5293 /* Linux dumps the Intel SSE regs in a note named "LINUX" with a note
5294 type of 5 (NT_PRXFPREG). Just include the whole note's contents
5297 elfcore_grok_prxfpreg (abfd
, note
)
5299 Elf_Internal_Note
* note
;
5301 return elfcore_make_note_pseudosection (abfd
, ".reg-xfp", note
);
5305 #if defined (HAVE_PRPSINFO_T)
5306 typedef prpsinfo_t elfcore_psinfo_t
;
5307 #if defined (__sparcv9) /* Sparc64 cross Sparc32 */
5308 typedef prpsinfo32_t elfcore_psinfo32_t
;
5312 #if defined (HAVE_PSINFO_T)
5313 typedef psinfo_t elfcore_psinfo_t
;
5314 #if defined (__sparcv9) /* Sparc64 cross Sparc32 */
5315 typedef psinfo32_t elfcore_psinfo32_t
;
5320 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
5322 /* return a malloc'ed copy of a string at START which is at
5323 most MAX bytes long, possibly without a terminating '\0'.
5324 the copy will always have a terminating '\0'. */
5327 elfcore_strndup (abfd
, start
, max
)
5333 char* end
= memchr (start
, '\0', max
);
5341 dup
= bfd_alloc (abfd
, len
+ 1);
5345 memcpy (dup
, start
, len
);
5352 elfcore_grok_psinfo (abfd
, note
)
5354 Elf_Internal_Note
* note
;
5356 if (note
->descsz
== sizeof (elfcore_psinfo_t
))
5358 elfcore_psinfo_t psinfo
;
5360 memcpy (&psinfo
, note
->descdata
, note
->descsz
);
5362 elf_tdata (abfd
)->core_program
5363 = elfcore_strndup (abfd
, psinfo
.pr_fname
, sizeof (psinfo
.pr_fname
));
5365 elf_tdata (abfd
)->core_command
5366 = elfcore_strndup (abfd
, psinfo
.pr_psargs
, sizeof (psinfo
.pr_psargs
));
5368 #if defined (__sparcv9)
5369 else if (note
->descsz
== sizeof (elfcore_psinfo32_t
))
5371 /* 64-bit host, 32-bit corefile */
5372 elfcore_psinfo32_t psinfo
;
5374 memcpy (&psinfo
, note
->descdata
, note
->descsz
);
5376 elf_tdata (abfd
)->core_program
5377 = elfcore_strndup (abfd
, psinfo
.pr_fname
, sizeof (psinfo
.pr_fname
));
5379 elf_tdata (abfd
)->core_command
5380 = elfcore_strndup (abfd
, psinfo
.pr_psargs
, sizeof (psinfo
.pr_psargs
));
5386 /* Fail - we don't know how to handle any other
5387 note size (ie. data object type). */
5391 /* Note that for some reason, a spurious space is tacked
5392 onto the end of the args in some (at least one anyway)
5393 implementations, so strip it off if it exists. */
5396 char* command
= elf_tdata (abfd
)->core_command
;
5397 int n
= strlen (command
);
5399 if (0 < n
&& command
[n
- 1] == ' ')
5400 command
[n
- 1] = '\0';
5405 #endif /* defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T) */
5408 #if defined (HAVE_PSTATUS_T)
5410 elfcore_grok_pstatus (abfd
, note
)
5412 Elf_Internal_Note
* note
;
5414 if (note
->descsz
== sizeof (pstatus_t
))
5418 memcpy (&pstat
, note
->descdata
, sizeof (pstat
));
5420 elf_tdata (abfd
)->core_pid
= pstat
.pr_pid
;
5422 #if defined (__sparcv9)
5423 else if (note
->descsz
== sizeof (pstatus32_t
))
5425 /* 64-bit host, 32-bit corefile */
5428 memcpy (&pstat
, note
->descdata
, sizeof (pstat
));
5430 elf_tdata (abfd
)->core_pid
= pstat
.pr_pid
;
5433 /* Could grab some more details from the "representative"
5434 lwpstatus_t in pstat.pr_lwp, but we'll catch it all in an
5435 NT_LWPSTATUS note, presumably. */
5439 #endif /* defined (HAVE_PSTATUS_T) */
5442 #if defined (HAVE_LWPSTATUS_T)
5444 elfcore_grok_lwpstatus (abfd
, note
)
5446 Elf_Internal_Note
* note
;
5448 lwpstatus_t lwpstat
;
5453 if (note
->descsz
!= sizeof (lwpstat
))
5456 memcpy (&lwpstat
, note
->descdata
, sizeof (lwpstat
));
5458 elf_tdata (abfd
)->core_lwpid
= lwpstat
.pr_lwpid
;
5459 elf_tdata (abfd
)->core_signal
= lwpstat
.pr_cursig
;
5461 /* Make a ".reg/999" section. */
5463 sprintf (buf
, ".reg/%d", elfcore_make_pid (abfd
));
5464 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5469 sect
= bfd_make_section (abfd
, name
);
5473 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
5474 sect
->_raw_size
= sizeof (lwpstat
.pr_context
.uc_mcontext
.gregs
);
5475 sect
->filepos
= note
->descpos
5476 + offsetof (lwpstatus_t
, pr_context
.uc_mcontext
.gregs
);
5479 #if defined (HAVE_LWPSTATUS_T_PR_REG)
5480 sect
->_raw_size
= sizeof (lwpstat
.pr_reg
);
5481 sect
->filepos
= note
->descpos
+ offsetof (lwpstatus_t
, pr_reg
);
5484 sect
->flags
= SEC_HAS_CONTENTS
;
5485 sect
->alignment_power
= 2;
5487 if (!elfcore_maybe_make_sect (abfd
, ".reg", sect
))
5490 /* Make a ".reg2/999" section */
5492 sprintf (buf
, ".reg2/%d", elfcore_make_pid (abfd
));
5493 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5498 sect
= bfd_make_section (abfd
, name
);
5502 #if defined (HAVE_LWPSTATUS_T_PR_CONTEXT)
5503 sect
->_raw_size
= sizeof (lwpstat
.pr_context
.uc_mcontext
.fpregs
);
5504 sect
->filepos
= note
->descpos
5505 + offsetof (lwpstatus_t
, pr_context
.uc_mcontext
.fpregs
);
5508 #if defined (HAVE_LWPSTATUS_T_PR_FPREG)
5509 sect
->_raw_size
= sizeof (lwpstat
.pr_fpreg
);
5510 sect
->filepos
= note
->descpos
+ offsetof (lwpstatus_t
, pr_fpreg
);
5513 sect
->flags
= SEC_HAS_CONTENTS
;
5514 sect
->alignment_power
= 2;
5516 if (!elfcore_maybe_make_sect (abfd
, ".reg2", sect
))
5521 #endif /* defined (HAVE_LWPSTATUS_T) */
5523 #if defined (HAVE_WIN32_PSTATUS_T)
5525 elfcore_grok_win32pstatus (abfd
, note
)
5527 Elf_Internal_Note
* note
;
5532 win32_pstatus_t pstatus
;
5534 if (note
->descsz
< sizeof (pstatus
))
5537 memcpy (& pstatus
, note
->descdata
, note
->descsz
);
5539 switch (pstatus
.data_type
)
5541 case NOTE_INFO_PROCESS
:
5542 /* FIXME: need to add ->core_command. */
5543 elf_tdata (abfd
)->core_signal
= pstatus
.data
.process_info
.signal
;
5544 elf_tdata (abfd
)->core_pid
= pstatus
.data
.process_info
.pid
;
5547 case NOTE_INFO_THREAD
:
5548 /* Make a ".reg/999" section. */
5549 sprintf (buf
, ".reg/%d", pstatus
.data
.thread_info
.tid
);
5551 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5557 sect
= bfd_make_section (abfd
, name
);
5561 sect
->_raw_size
= sizeof (pstatus
.data
.thread_info
.thread_context
);
5562 sect
->filepos
= note
->descpos
+ offsetof (struct win32_pstatus
,
5563 data
.thread_info
.thread_context
);
5564 sect
->flags
= SEC_HAS_CONTENTS
;
5565 sect
->alignment_power
= 2;
5567 if (pstatus
.data
.thread_info
.is_active_thread
)
5568 if (! elfcore_maybe_make_sect (abfd
, ".reg", sect
))
5572 case NOTE_INFO_MODULE
:
5573 /* Make a ".module/xxxxxxxx" section. */
5574 sprintf (buf
, ".module/%08x" , pstatus
.data
.module_info
.base_address
);
5576 name
= bfd_alloc (abfd
, strlen (buf
) + 1);
5582 sect
= bfd_make_section (abfd
, name
);
5587 sect
->_raw_size
= note
->descsz
;
5588 sect
->filepos
= note
->descpos
;
5589 sect
->flags
= SEC_HAS_CONTENTS
;
5590 sect
->alignment_power
= 2;
5599 #endif /* HAVE_WIN32_PSTATUS_T */
5602 elfcore_grok_note (abfd
, note
)
5604 Elf_Internal_Note
* note
;
5611 #if defined (HAVE_PRSTATUS_T)
5613 return elfcore_grok_prstatus (abfd
, note
);
5616 #if defined (HAVE_PSTATUS_T)
5618 return elfcore_grok_pstatus (abfd
, note
);
5621 #if defined (HAVE_LWPSTATUS_T)
5623 return elfcore_grok_lwpstatus (abfd
, note
);
5626 case NT_FPREGSET
: /* FIXME: rename to NT_PRFPREG */
5627 return elfcore_grok_prfpreg (abfd
, note
);
5629 #if defined (HAVE_WIN32_PSTATUS_T)
5630 case NT_WIN32PSTATUS
:
5631 return elfcore_grok_win32pstatus (abfd
, note
);
5634 case NT_PRXFPREG
: /* Linux SSE extension */
5635 if (note
->namesz
== 5
5636 && ! strcmp (note
->namedata
, "LINUX"))
5637 return elfcore_grok_prxfpreg (abfd
, note
);
5641 #if defined (HAVE_PRPSINFO_T) || defined (HAVE_PSINFO_T)
5644 return elfcore_grok_psinfo (abfd
, note
);
5651 elfcore_read_notes (abfd
, offset
, size
)
5662 if (bfd_seek (abfd
, offset
, SEEK_SET
) == -1)
5665 buf
= bfd_malloc ((size_t) size
);
5669 if (bfd_read (buf
, size
, 1, abfd
) != size
)
5677 while (p
< buf
+ size
)
5679 /* FIXME: bad alignment assumption. */
5680 Elf_External_Note
* xnp
= (Elf_External_Note
*) p
;
5681 Elf_Internal_Note in
;
5683 in
.type
= bfd_h_get_32 (abfd
, (bfd_byte
*) xnp
->type
);
5685 in
.namesz
= bfd_h_get_32 (abfd
, (bfd_byte
*) xnp
->namesz
);
5686 in
.namedata
= xnp
->name
;
5688 in
.descsz
= bfd_h_get_32 (abfd
, (bfd_byte
*) xnp
->descsz
);
5689 in
.descdata
= in
.namedata
+ BFD_ALIGN (in
.namesz
, 4);
5690 in
.descpos
= offset
+ (in
.descdata
- buf
);
5692 if (! elfcore_grok_note (abfd
, &in
))
5695 p
= in
.descdata
+ BFD_ALIGN (in
.descsz
, 4);
5703 /* FIXME: This function is now unnecessary. Callers can just call
5704 bfd_section_from_phdr directly. */
5707 _bfd_elfcore_section_from_phdr (abfd
, phdr
, sec_num
)
5709 Elf_Internal_Phdr
* phdr
;
5712 if (! bfd_section_from_phdr (abfd
, phdr
, sec_num
))
5720 /* Providing external access to the ELF program header table. */
5722 /* Return an upper bound on the number of bytes required to store a
5723 copy of ABFD's program header table entries. Return -1 if an error
5724 occurs; bfd_get_error will return an appropriate code. */
5726 bfd_get_elf_phdr_upper_bound (abfd
)
5729 if (abfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
5731 bfd_set_error (bfd_error_wrong_format
);
5735 return (elf_elfheader (abfd
)->e_phnum
5736 * sizeof (Elf_Internal_Phdr
));
5740 /* Copy ABFD's program header table entries to *PHDRS. The entries
5741 will be stored as an array of Elf_Internal_Phdr structures, as
5742 defined in include/elf/internal.h. To find out how large the
5743 buffer needs to be, call bfd_get_elf_phdr_upper_bound.
5745 Return the number of program header table entries read, or -1 if an
5746 error occurs; bfd_get_error will return an appropriate code. */
5748 bfd_get_elf_phdrs (abfd
, phdrs
)
5754 if (abfd
->xvec
->flavour
!= bfd_target_elf_flavour
)
5756 bfd_set_error (bfd_error_wrong_format
);
5760 num_phdrs
= elf_elfheader (abfd
)->e_phnum
;
5761 memcpy (phdrs
, elf_tdata (abfd
)->phdr
,
5762 num_phdrs
* sizeof (Elf_Internal_Phdr
));